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linux/net/wireless/nl80211.c
Benjamin Berg 334bf33eec wifi: cfg80211: avoid leaking stack data into trace 
If the structure is not initialized then boolean types might be copied
into the tracing data without being initialised. This causes data from
the stack to leak into the trace and also triggers a UBSAN failure which
can easily be avoided here.

Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Link: https://lore.kernel.org/r/20230925171855.a9271ef53b05.I8180bae663984c91a3e036b87f36a640ba409817@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-09-26 09:12:27 +02:00

20214 lines
547 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-only
/*
* This is the new netlink-based wireless configuration interface.
*
* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
* Copyright 2013-2014 Intel Mobile Communications GmbH
* Copyright 2015-2017 Intel Deutschland GmbH
* Copyright (C) 2018-2023 Intel Corporation
*/
#include <linux/if.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/if_ether.h>
#include <linux/ieee80211.h>
#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
#include <linux/netlink.h>
#include <linux/nospec.h>
#include <linux/etherdevice.h>
#include <linux/if_vlan.h>
#include <net/net_namespace.h>
#include <net/genetlink.h>
#include <net/cfg80211.h>
#include <net/sock.h>
#include <net/inet_connection_sock.h>
#include "core.h"
#include "nl80211.h"
#include "reg.h"
#include "rdev-ops.h"
static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
struct genl_info *info,
struct cfg80211_crypto_settings *settings,
int cipher_limit);
/* the netlink family */
static struct genl_family nl80211_fam;
/* multicast groups */
enum nl80211_multicast_groups {
NL80211_MCGRP_CONFIG,
NL80211_MCGRP_SCAN,
NL80211_MCGRP_REGULATORY,
NL80211_MCGRP_MLME,
NL80211_MCGRP_VENDOR,
NL80211_MCGRP_NAN,
NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
};
static const struct genl_multicast_group nl80211_mcgrps[] = {
[NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
[NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
[NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
[NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
[NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
[NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
#ifdef CONFIG_NL80211_TESTMODE
[NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
#endif
};
/* returns ERR_PTR values */
static struct wireless_dev *
__cfg80211_wdev_from_attrs(struct cfg80211_registered_device *rdev,
struct net *netns, struct nlattr **attrs)
{
struct wireless_dev *result = NULL;
bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
u64 wdev_id = 0;
int wiphy_idx = -1;
int ifidx = -1;
if (!have_ifidx && !have_wdev_id)
return ERR_PTR(-EINVAL);
if (have_ifidx)
ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
if (have_wdev_id) {
wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
wiphy_idx = wdev_id >> 32;
}
if (rdev) {
struct wireless_dev *wdev;
lockdep_assert_held(&rdev->wiphy.mtx);
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
if (have_ifidx && wdev->netdev &&
wdev->netdev->ifindex == ifidx) {
result = wdev;
break;
}
if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
result = wdev;
break;
}
}
return result ?: ERR_PTR(-ENODEV);
}
ASSERT_RTNL();
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
struct wireless_dev *wdev;
if (wiphy_net(&rdev->wiphy) != netns)
continue;
if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
continue;
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
if (have_ifidx && wdev->netdev &&
wdev->netdev->ifindex == ifidx) {
result = wdev;
break;
}
if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
result = wdev;
break;
}
}
if (result)
break;
}
if (result)
return result;
return ERR_PTR(-ENODEV);
}
static struct cfg80211_registered_device *
__cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
{
struct cfg80211_registered_device *rdev = NULL, *tmp;
struct net_device *netdev;
ASSERT_RTNL();
if (!attrs[NL80211_ATTR_WIPHY] &&
!attrs[NL80211_ATTR_IFINDEX] &&
!attrs[NL80211_ATTR_WDEV])
return ERR_PTR(-EINVAL);
if (attrs[NL80211_ATTR_WIPHY])
rdev = cfg80211_rdev_by_wiphy_idx(
nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
if (attrs[NL80211_ATTR_WDEV]) {
u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
struct wireless_dev *wdev;
bool found = false;
tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
if (tmp) {
/* make sure wdev exists */
list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
if (wdev->identifier != (u32)wdev_id)
continue;
found = true;
break;
}
if (!found)
tmp = NULL;
if (rdev && tmp != rdev)
return ERR_PTR(-EINVAL);
rdev = tmp;
}
}
if (attrs[NL80211_ATTR_IFINDEX]) {
int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
netdev = __dev_get_by_index(netns, ifindex);
if (netdev) {
if (netdev->ieee80211_ptr)
tmp = wiphy_to_rdev(
netdev->ieee80211_ptr->wiphy);
else
tmp = NULL;
/* not wireless device -- return error */
if (!tmp)
return ERR_PTR(-EINVAL);
/* mismatch -- return error */
if (rdev && tmp != rdev)
return ERR_PTR(-EINVAL);
rdev = tmp;
}
}
if (!rdev)
return ERR_PTR(-ENODEV);
if (netns != wiphy_net(&rdev->wiphy))
return ERR_PTR(-ENODEV);
return rdev;
}
/*
* This function returns a pointer to the driver
* that the genl_info item that is passed refers to.
*
* The result of this can be a PTR_ERR and hence must
* be checked with IS_ERR() for errors.
*/
static struct cfg80211_registered_device *
cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
{
return __cfg80211_rdev_from_attrs(netns, info->attrs);
}
static int validate_beacon_head(const struct nlattr *attr,
struct netlink_ext_ack *extack)
{
const u8 *data = nla_data(attr);
unsigned int len = nla_len(attr);
const struct element *elem;
const struct ieee80211_mgmt *mgmt = (void *)data;
unsigned int fixedlen, hdrlen;
bool s1g_bcn;
if (len < offsetofend(typeof(*mgmt), frame_control))
goto err;
s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
if (s1g_bcn) {
fixedlen = offsetof(struct ieee80211_ext,
u.s1g_beacon.variable);
hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
} else {
fixedlen = offsetof(struct ieee80211_mgmt,
u.beacon.variable);
hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
}
if (len < fixedlen)
goto err;
if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
goto err;
data += fixedlen;
len -= fixedlen;
for_each_element(elem, data, len) {
/* nothing */
}
if (for_each_element_completed(elem, data, len))
return 0;
err:
NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
return -EINVAL;
}
static int validate_ie_attr(const struct nlattr *attr,
struct netlink_ext_ack *extack)
{
const u8 *data = nla_data(attr);
unsigned int len = nla_len(attr);
const struct element *elem;
for_each_element(elem, data, len) {
/* nothing */
}
if (for_each_element_completed(elem, data, len))
return 0;
NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
return -EINVAL;
}
static int validate_he_capa(const struct nlattr *attr,
struct netlink_ext_ack *extack)
{
if (!ieee80211_he_capa_size_ok(nla_data(attr), nla_len(attr)))
return -EINVAL;
return 0;
}
/* policy for the attributes */
static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
static const struct nla_policy
nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
[NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
[NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
.len = U8_MAX },
[NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
.len = U8_MAX },
};
static const struct nla_policy
nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
[NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
NLA_POLICY_MAX(NLA_U8, 15),
[NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
[NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
NLA_POLICY_MAX(NLA_U8, 15),
[NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
NLA_POLICY_MAX(NLA_U8, 31),
[NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
[NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
[NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
[NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK] = { .type = NLA_FLAG },
[NL80211_PMSR_FTM_REQ_ATTR_BSS_COLOR] = { .type = NLA_U8 },
};
static const struct nla_policy
nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
[NL80211_PMSR_TYPE_FTM] =
NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
};
static const struct nla_policy
nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
[NL80211_PMSR_REQ_ATTR_DATA] =
NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
[NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
};
static const struct nla_policy
nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
[NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
[NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
[NL80211_PMSR_PEER_ATTR_REQ] =
NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
[NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
};
static const struct nla_policy
nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
[NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
[NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
[NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
[NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
[NL80211_PMSR_ATTR_PEERS] =
NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy),
};
static const struct nla_policy
he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
NLA_POLICY_RANGE(NLA_U8, 1, 20),
[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
NLA_POLICY_RANGE(NLA_U8, 1, 20),
[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
NLA_POLICY_RANGE(NLA_U8, 1, 20),
[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
NLA_POLICY_EXACT_LEN(8),
[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
NLA_POLICY_EXACT_LEN(8),
[NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
};
static const struct nla_policy
he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
[NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
[NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
[NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
};
static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
[NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
.len = NL80211_MAX_SUPP_RATES },
[NL80211_TXRATE_HT] = { .type = NLA_BINARY,
.len = NL80211_MAX_SUPP_HT_RATES },
[NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
[NL80211_TXRATE_GI] = { .type = NLA_U8 },
[NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
[NL80211_TXRATE_HE_GI] = NLA_POLICY_RANGE(NLA_U8,
NL80211_RATE_INFO_HE_GI_0_8,
NL80211_RATE_INFO_HE_GI_3_2),
[NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
NL80211_RATE_INFO_HE_1XLTF,
NL80211_RATE_INFO_HE_4XLTF),
};
static const struct nla_policy
nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
[NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
[NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
[NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
[NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
[NL80211_TID_CONFIG_ATTR_NOACK] =
NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
[NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
[NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
[NL80211_TID_CONFIG_ATTR_TX_RATE] =
NLA_POLICY_NESTED(nl80211_txattr_policy),
};
static const struct nla_policy
nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
[NL80211_FILS_DISCOVERY_ATTR_TMPL] =
NLA_POLICY_RANGE(NLA_BINARY,
NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
IEEE80211_MAX_DATA_LEN),
};
static const struct nla_policy
nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN }
};
static const struct nla_policy
sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
[NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
[NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
};
static const struct nla_policy
sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
[NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
[NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
};
static const struct nla_policy
nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = {
[NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES] = NLA_POLICY_MIN(NLA_U8, 2),
[NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY] =
NLA_POLICY_MIN(NLA_U8, 1),
[NL80211_MBSSID_CONFIG_ATTR_INDEX] = { .type = NLA_U8 },
[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 },
[NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG },
};
static const struct nla_policy
nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
[NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
[NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
};
static struct netlink_range_validation nl80211_punct_bitmap_range = {
.min = 0,
.max = 0xffff,
};
static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
.len = 20-1 },
[NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
[NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
NL80211_EDMG_CHANNELS_MIN,
NL80211_EDMG_CHANNELS_MAX),
[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
NL80211_EDMG_BW_CONFIG_MIN,
NL80211_EDMG_BW_CONFIG_MAX),
[NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
[NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
[NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
[NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
[NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
[NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
[NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
[NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
[NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
[NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
[NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
[NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
[NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
.len = WLAN_MAX_KEY_LEN },
[NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
[NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
[NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
[NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
[NL80211_ATTR_KEY_TYPE] =
NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
[NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
[NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
[NL80211_ATTR_BEACON_HEAD] =
NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
IEEE80211_MAX_DATA_LEN),
[NL80211_ATTR_BEACON_TAIL] =
NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
IEEE80211_MAX_DATA_LEN),
[NL80211_ATTR_STA_AID] =
NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
[NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
[NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
[NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
.len = NL80211_MAX_SUPP_RATES },
[NL80211_ATTR_STA_PLINK_ACTION] =
NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
[NL80211_ATTR_STA_TX_POWER_SETTING] =
NLA_POLICY_RANGE(NLA_U8,
NL80211_TX_POWER_AUTOMATIC,
NL80211_TX_POWER_FIXED),
[NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
[NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
[NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
[NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_MESH_ID_LEN },
[NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
/* allow 3 for NUL-termination, we used to declare this NLA_STRING */
[NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
[NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
[NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
[NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
[NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
[NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
.len = NL80211_MAX_SUPP_RATES },
[NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
[NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
[NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
[NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
[NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
[NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
validate_ie_attr,
IEEE80211_MAX_DATA_LEN),
[NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
[NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
[NL80211_ATTR_SSID] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_SSID_LEN },
[NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
[NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
[NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
[NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
[NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
NL80211_MFP_NO,
NL80211_MFP_OPTIONAL),
[NL80211_ATTR_STA_FLAGS2] =
NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_sta_flag_update)),
[NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
[NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
[NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
[NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
[NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
[NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
[NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
[NL80211_ATTR_PID] = { .type = NLA_U32 },
[NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
[NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
[NL80211_ATTR_DURATION] = { .type = NLA_U32 },
[NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
[NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
[NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
[NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
NL80211_PS_DISABLED,
NL80211_PS_ENABLED),
[NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
[NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
[NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
[NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
[NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
[NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
[NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
[NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
[NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
[NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
[NL80211_ATTR_STA_PLINK_STATE] =
NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
[NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
[NL80211_ATTR_MESH_PEER_AID] =
NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
[NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
[NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
[NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
[NL80211_ATTR_HIDDEN_SSID] =
NLA_POLICY_RANGE(NLA_U32,
NL80211_HIDDEN_SSID_NOT_IN_USE,
NL80211_HIDDEN_SSID_ZERO_CONTENTS),
[NL80211_ATTR_IE_PROBE_RESP] =
NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
IEEE80211_MAX_DATA_LEN),
[NL80211_ATTR_IE_ASSOC_RESP] =
NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
IEEE80211_MAX_DATA_LEN),
[NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
[NL80211_ATTR_STA_WME] = NLA_POLICY_NESTED(nl80211_sta_wme_policy),
[NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
[NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
[NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
[NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
[NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
[NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
[NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
[NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
[NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
[NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
[NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
[NL80211_ATTR_HT_CAPABILITY_MASK] = {
.len = NL80211_HT_CAPABILITY_LEN
},
[NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
[NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
[NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
[NL80211_ATTR_WDEV] = { .type = NLA_U64 },
[NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
/* need to include at least Auth Transaction and Status Code */
[NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
[NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
[NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
[NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
[NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
[NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
NLA_POLICY_RANGE(NLA_U32,
NL80211_MESH_POWER_UNKNOWN + 1,
NL80211_MESH_POWER_MAX),
[NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
[NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
[NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
[NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
[NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
[NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
[NL80211_ATTR_VHT_CAPABILITY_MASK] = {
.len = NL80211_VHT_CAPABILITY_LEN,
},
[NL80211_ATTR_MDID] = { .type = NLA_U16 },
[NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
[NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
[NL80211_ATTR_PEER_AID] =
NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
[NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
[NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
[NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
[NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
[NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
[NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
/*
* The value of the Length field of the Supported Operating
* Classes element is between 2 and 253.
*/
[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
[NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
[NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
[NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
[NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
[NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
[NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
IEEE80211_QOS_MAP_LEN_MIN,
IEEE80211_QOS_MAP_LEN_MAX),
[NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
[NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
[NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
[NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
[NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
[NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
[NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
[NL80211_ATTR_USER_PRIO] =
NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
[NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
[NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
[NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
[NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
[NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
[NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
[NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
[NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
[NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
[NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
[NL80211_ATTR_STA_SUPPORT_P2P_PS] =
NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
[NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
.len = VHT_MUMIMO_GROUPS_DATA_LEN
},
[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
[NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
[NL80211_ATTR_BANDS] = { .type = NLA_U32 },
[NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
[NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
.len = FILS_MAX_KEK_LEN },
[NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
[NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
.len = sizeof(struct nl80211_bss_select_rssi_adjust)
},
[NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
[NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
.len = FILS_ERP_MAX_USERNAME_LEN },
[NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
.len = FILS_ERP_MAX_REALM_LEN },
[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
[NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
.len = FILS_ERP_MAX_RRK_LEN },
[NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
[NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
[NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
[NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
[NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
[NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
[NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
[NL80211_ATTR_HE_CAPABILITY] =
NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_he_capa,
NL80211_HE_MAX_CAPABILITY_LEN),
[NL80211_ATTR_FTM_RESPONDER] =
NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
[NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
[NL80211_ATTR_PEER_MEASUREMENTS] =
NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
[NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
[NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
.len = SAE_PASSWORD_MAX_LEN },
[NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
[NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
[NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
[NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
[NL80211_ATTR_TID_CONFIG] =
NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
[NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
[NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
[NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
[NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
[NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
[NL80211_ATTR_HE_6GHZ_CAPABILITY] =
NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
[NL80211_ATTR_FILS_DISCOVERY] =
NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
[NL80211_ATTR_S1G_CAPABILITY] =
NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
[NL80211_ATTR_S1G_CAPABILITY_MASK] =
NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
[NL80211_ATTR_SAE_PWE] =
NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
NL80211_SAE_PWE_BOTH),
[NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
[NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
[NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
[NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 },
[NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 },
[NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 },
[NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy),
[NL80211_ATTR_MBSSID_CONFIG] =
NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
[NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
[NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
[NL80211_ATTR_AP_SETTINGS_FLAGS] = { .type = NLA_U32 },
[NL80211_ATTR_EHT_CAPABILITY] =
NLA_POLICY_RANGE(NLA_BINARY,
NL80211_EHT_MIN_CAPABILITY_LEN,
NL80211_EHT_MAX_CAPABILITY_LEN),
[NL80211_ATTR_DISABLE_EHT] = { .type = NLA_FLAG },
[NL80211_ATTR_MLO_LINKS] =
NLA_POLICY_NESTED_ARRAY(nl80211_policy),
[NL80211_ATTR_MLO_LINK_ID] =
NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS),
[NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN),
[NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
[NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT },
[NL80211_ATTR_PUNCT_BITMAP] =
NLA_POLICY_FULL_RANGE(NLA_U32, &nl80211_punct_bitmap_range),
[NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS] = { .type = NLA_U16 },
[NL80211_ATTR_HW_TIMESTAMP_ENABLED] = { .type = NLA_FLAG },
[NL80211_ATTR_EMA_RNR_ELEMS] = { .type = NLA_NESTED },
[NL80211_ATTR_MLO_LINK_DISABLED] = { .type = NLA_FLAG },
};
/* policy for the key attributes */
static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
[NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
[NL80211_KEY_IDX] = { .type = NLA_U8 },
[NL80211_KEY_CIPHER] = { .type = NLA_U32 },
[NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
[NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
[NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
[NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
[NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
[NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
};
/* policy for the key default flags */
static const struct nla_policy
nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
[NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
[NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
};
#ifdef CONFIG_PM
/* policy for WoWLAN attributes */
static const struct nla_policy
nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
[NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
[NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
};
static const struct nla_policy
nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
[NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
[NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
[NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
[NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
[NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
[NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
.len = sizeof(struct nl80211_wowlan_tcp_data_seq)
},
[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
.len = sizeof(struct nl80211_wowlan_tcp_data_token)
},
[NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
[NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
};
#endif /* CONFIG_PM */
/* policy for coalesce rule attributes */
static const struct nla_policy
nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
[NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
[NL80211_ATTR_COALESCE_RULE_CONDITION] =
NLA_POLICY_RANGE(NLA_U32,
NL80211_COALESCE_CONDITION_MATCH,
NL80211_COALESCE_CONDITION_NO_MATCH),
[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
};
/* policy for GTK rekey offload attributes */
static const struct nla_policy
nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
[NL80211_REKEY_DATA_KEK] = {
.type = NLA_BINARY,
.len = NL80211_KEK_EXT_LEN
},
[NL80211_REKEY_DATA_KCK] = {
.type = NLA_BINARY,
.len = NL80211_KCK_EXT_LEN_32
},
[NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
[NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
};
static const struct nla_policy
nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
[NL80211_BAND_2GHZ] = { .type = NLA_S32 },
[NL80211_BAND_5GHZ] = { .type = NLA_S32 },
[NL80211_BAND_6GHZ] = { .type = NLA_S32 },
[NL80211_BAND_60GHZ] = { .type = NLA_S32 },
[NL80211_BAND_LC] = { .type = NLA_S32 },
};
static const struct nla_policy
nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_SSID_LEN },
[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
};
static const struct nla_policy
nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
[NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
[NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
};
static const struct nla_policy
nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
[NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
[NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
.len = sizeof(struct nl80211_bss_select_rssi_adjust)
},
};
/* policy for NAN function attributes */
static const struct nla_policy
nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
[NL80211_NAN_FUNC_TYPE] =
NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
[NL80211_NAN_FUNC_SERVICE_ID] = {
.len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
[NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
[NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
[NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
[NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
[NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
[NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
[NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
.len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
[NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
[NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
[NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
[NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
[NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
};
/* policy for Service Response Filter attributes */
static const struct nla_policy
nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
[NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
[NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
.len = NL80211_NAN_FUNC_SRF_MAX_LEN },
[NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
[NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
};
/* policy for packet pattern attributes */
static const struct nla_policy
nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
[NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
[NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
[NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
};
static int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
struct cfg80211_registered_device **rdev,
struct wireless_dev **wdev,
struct nlattr **attrbuf)
{
int err;
if (!cb->args[0]) {
struct nlattr **attrbuf_free = NULL;
if (!attrbuf) {
attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
GFP_KERNEL);
if (!attrbuf)
return -ENOMEM;
attrbuf_free = attrbuf;
}
err = nlmsg_parse_deprecated(cb->nlh,
GENL_HDRLEN + nl80211_fam.hdrsize,
attrbuf, nl80211_fam.maxattr,
nl80211_policy, NULL);
if (err) {
kfree(attrbuf_free);
return err;
}
rtnl_lock();
*wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
attrbuf);
kfree(attrbuf_free);
if (IS_ERR(*wdev)) {
rtnl_unlock();
return PTR_ERR(*wdev);
}
*rdev = wiphy_to_rdev((*wdev)->wiphy);
mutex_lock(&(*rdev)->wiphy.mtx);
rtnl_unlock();
/* 0 is the first index - add 1 to parse only once */
cb->args[0] = (*rdev)->wiphy_idx + 1;
cb->args[1] = (*wdev)->identifier;
} else {
/* subtract the 1 again here */
struct wiphy *wiphy;
struct wireless_dev *tmp;
rtnl_lock();
wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
if (!wiphy) {
rtnl_unlock();
return -ENODEV;
}
*rdev = wiphy_to_rdev(wiphy);
*wdev = NULL;
list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
if (tmp->identifier == cb->args[1]) {
*wdev = tmp;
break;
}
}
if (!*wdev) {
rtnl_unlock();
return -ENODEV;
}
mutex_lock(&(*rdev)->wiphy.mtx);
rtnl_unlock();
}
return 0;
}
/* message building helper */
void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
int flags, u8 cmd)
{
/* since there is no private header just add the generic one */
return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
}
static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
const struct ieee80211_reg_rule *rule)
{
int j;
struct nlattr *nl_wmm_rules =
nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
if (!nl_wmm_rules)
goto nla_put_failure;
for (j = 0; j < IEEE80211_NUM_ACS; j++) {
struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
if (!nl_wmm_rule)
goto nla_put_failure;
if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
rule->wmm_rule.client[j].cw_min) ||
nla_put_u16(msg, NL80211_WMMR_CW_MAX,
rule->wmm_rule.client[j].cw_max) ||
nla_put_u8(msg, NL80211_WMMR_AIFSN,
rule->wmm_rule.client[j].aifsn) ||
nla_put_u16(msg, NL80211_WMMR_TXOP,
rule->wmm_rule.client[j].cot))
goto nla_put_failure;
nla_nest_end(msg, nl_wmm_rule);
}
nla_nest_end(msg, nl_wmm_rules);
return 0;
nla_put_failure:
return -ENOBUFS;
}
static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
struct ieee80211_channel *chan,
bool large)
{
/* Some channels must be completely excluded from the
* list to protect old user-space tools from breaking
*/
if (!large && chan->flags &
(IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
return 0;
if (!large && chan->freq_offset)
return 0;
if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
chan->center_freq))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
goto nla_put_failure;
if (chan->flags & IEEE80211_CHAN_NO_IR) {
if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
goto nla_put_failure;
if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
goto nla_put_failure;
}
if (chan->flags & IEEE80211_CHAN_RADAR) {
if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
goto nla_put_failure;
if (large) {
u32 time;
time = elapsed_jiffies_msecs(chan->dfs_state_entered);
if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
chan->dfs_state))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
time))
goto nla_put_failure;
if (nla_put_u32(msg,
NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
chan->dfs_cac_ms))
goto nla_put_failure;
}
}
if (large) {
if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_320MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_320MHZ))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_EHT) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_EHT))
goto nla_put_failure;
}
if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
DBM_TO_MBM(chan->max_power)))
goto nla_put_failure;
if (large) {
const struct ieee80211_reg_rule *rule =
freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
if (nl80211_msg_put_wmm_rules(msg, rule))
goto nla_put_failure;
}
}
return 0;
nla_put_failure:
return -ENOBUFS;
}
static bool nl80211_put_txq_stats(struct sk_buff *msg,
struct cfg80211_txq_stats *txqstats,
int attrtype)
{
struct nlattr *txqattr;
#define PUT_TXQVAL_U32(attr, memb) do { \
if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \
nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
return false; \
} while (0)
txqattr = nla_nest_start_noflag(msg, attrtype);
if (!txqattr)
return false;
PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
PUT_TXQVAL_U32(FLOWS, flows);
PUT_TXQVAL_U32(DROPS, drops);
PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
PUT_TXQVAL_U32(OVERLIMIT, overlimit);
PUT_TXQVAL_U32(OVERMEMORY, overmemory);
PUT_TXQVAL_U32(COLLISIONS, collisions);
PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
nla_nest_end(msg, txqattr);
#undef PUT_TXQVAL_U32
return true;
}
/* netlink command implementations */
/**
* nl80211_link_id - return link ID
* @attrs: attributes to look at
*
* Returns: the link ID or 0 if not given
*
* Note this function doesn't do any validation of the link
* ID validity wrt. links that were actually added, so it must
* be called only from ops with %NL80211_FLAG_MLO_VALID_LINK_ID
* or if additional validation is done.
*/
static unsigned int nl80211_link_id(struct nlattr **attrs)
{
struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
if (!linkid)
return 0;
return nla_get_u8(linkid);
}
static int nl80211_link_id_or_invalid(struct nlattr **attrs)
{
struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
if (!linkid)
return -1;
return nla_get_u8(linkid);
}
struct key_parse {
struct key_params p;
int idx;
int type;
bool def, defmgmt, defbeacon;
bool def_uni, def_multi;
};
static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
struct key_parse *k)
{
struct nlattr *tb[NL80211_KEY_MAX + 1];
int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
nl80211_key_policy,
info->extack);
if (err)
return err;
k->def = !!tb[NL80211_KEY_DEFAULT];
k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
if (k->def) {
k->def_uni = true;
k->def_multi = true;
}
if (k->defmgmt || k->defbeacon)
k->def_multi = true;
if (tb[NL80211_KEY_IDX])
k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
if (tb[NL80211_KEY_DATA]) {
k->p.key = nla_data(tb[NL80211_KEY_DATA]);
k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
}
if (tb[NL80211_KEY_SEQ]) {
k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
}
if (tb[NL80211_KEY_CIPHER])
k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
if (tb[NL80211_KEY_TYPE])
k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
if (tb[NL80211_KEY_DEFAULT_TYPES]) {
struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
err = nla_parse_nested_deprecated(kdt,
NUM_NL80211_KEY_DEFAULT_TYPES - 1,
tb[NL80211_KEY_DEFAULT_TYPES],
nl80211_key_default_policy,
info->extack);
if (err)
return err;
k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
}
if (tb[NL80211_KEY_MODE])
k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
return 0;
}
static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
{
if (info->attrs[NL80211_ATTR_KEY_DATA]) {
k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
}
if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
}
if (info->attrs[NL80211_ATTR_KEY_IDX])
k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
if (info->attrs[NL80211_ATTR_KEY_CIPHER])
k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
if (k->def) {
k->def_uni = true;
k->def_multi = true;
}
if (k->defmgmt)
k->def_multi = true;
if (info->attrs[NL80211_ATTR_KEY_TYPE])
k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
int err = nla_parse_nested_deprecated(kdt,
NUM_NL80211_KEY_DEFAULT_TYPES - 1,
info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
nl80211_key_default_policy,
info->extack);
if (err)
return err;
k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
}
return 0;
}
static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
{
int err;
memset(k, 0, sizeof(*k));
k->idx = -1;
k->type = -1;
if (info->attrs[NL80211_ATTR_KEY])
err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
else
err = nl80211_parse_key_old(info, k);
if (err)
return err;
if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
(k->defbeacon ? 1 : 0) > 1) {
GENL_SET_ERR_MSG(info,
"key with multiple default flags is invalid");
return -EINVAL;
}
if (k->defmgmt || k->defbeacon) {
if (k->def_uni || !k->def_multi) {
GENL_SET_ERR_MSG(info,
"defmgmt/defbeacon key must be mcast");
return -EINVAL;
}
}
if (k->idx != -1) {
if (k->defmgmt) {
if (k->idx < 4 || k->idx > 5) {
GENL_SET_ERR_MSG(info,
"defmgmt key idx not 4 or 5");
return -EINVAL;
}
} else if (k->defbeacon) {
if (k->idx < 6 || k->idx > 7) {
GENL_SET_ERR_MSG(info,
"defbeacon key idx not 6 or 7");
return -EINVAL;
}
} else if (k->def) {
if (k->idx < 0 || k->idx > 3) {
GENL_SET_ERR_MSG(info, "def key idx not 0-3");
return -EINVAL;
}
} else {
if (k->idx < 0 || k->idx > 7) {
GENL_SET_ERR_MSG(info, "key idx not 0-7");
return -EINVAL;
}
}
}
return 0;
}
static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
struct genl_info *info, bool *no_ht)
{
struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
struct key_parse parse;
struct nlattr *key;
struct cfg80211_cached_keys *result;
int rem, err, def = 0;
bool have_key = false;
nla_for_each_nested(key, keys, rem) {
have_key = true;
break;
}
if (!have_key)
return NULL;
result = kzalloc(sizeof(*result), GFP_KERNEL);
if (!result)
return ERR_PTR(-ENOMEM);
result->def = -1;
nla_for_each_nested(key, keys, rem) {
memset(&parse, 0, sizeof(parse));
parse.idx = -1;
err = nl80211_parse_key_new(info, key, &parse);
if (err)
goto error;
err = -EINVAL;
if (!parse.p.key)
goto error;
if (parse.idx < 0 || parse.idx > 3) {
GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
goto error;
}
if (parse.def) {
if (def) {
GENL_SET_ERR_MSG(info,
"only one key can be default");
goto error;
}
def = 1;
result->def = parse.idx;
if (!parse.def_uni || !parse.def_multi)
goto error;
} else if (parse.defmgmt)
goto error;
err = cfg80211_validate_key_settings(rdev, &parse.p,
parse.idx, false, NULL);
if (err)
goto error;
if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
GENL_SET_ERR_MSG(info, "connect key must be WEP");
err = -EINVAL;
goto error;
}
result->params[parse.idx].cipher = parse.p.cipher;
result->params[parse.idx].key_len = parse.p.key_len;
result->params[parse.idx].key = result->data[parse.idx];
memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
/* must be WEP key if we got here */
if (no_ht)
*no_ht = true;
}
if (result->def < 0) {
err = -EINVAL;
GENL_SET_ERR_MSG(info, "need a default/TX key");
goto error;
}
return result;
error:
kfree(result);
return ERR_PTR(err);
}
static int nl80211_key_allowed(struct wireless_dev *wdev)
{
ASSERT_WDEV_LOCK(wdev);
switch (wdev->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_MESH_POINT:
break;
case NL80211_IFTYPE_ADHOC:
if (wdev->u.ibss.current_bss)
return 0;
return -ENOLINK;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
if (wdev->connected)
return 0;
return -ENOLINK;
case NL80211_IFTYPE_NAN:
if (wiphy_ext_feature_isset(wdev->wiphy,
NL80211_EXT_FEATURE_SECURE_NAN))
return 0;
return -EINVAL;
case NL80211_IFTYPE_UNSPECIFIED:
case NL80211_IFTYPE_OCB:
case NL80211_IFTYPE_MONITOR:
case NL80211_IFTYPE_P2P_DEVICE:
case NL80211_IFTYPE_WDS:
case NUM_NL80211_IFTYPES:
return -EINVAL;
}
return 0;
}
static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
u32 freq)
{
struct ieee80211_channel *chan;
chan = ieee80211_get_channel_khz(wiphy, freq);
if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
return NULL;
return chan;
}
static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
{
struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
int i;
if (!nl_modes)
goto nla_put_failure;
i = 0;
while (ifmodes) {
if ((ifmodes & 1) && nla_put_flag(msg, i))
goto nla_put_failure;
ifmodes >>= 1;
i++;
}
nla_nest_end(msg, nl_modes);
return 0;
nla_put_failure:
return -ENOBUFS;
}
static int nl80211_put_iface_combinations(struct wiphy *wiphy,
struct sk_buff *msg,
bool large)
{
struct nlattr *nl_combis;
int i, j;
nl_combis = nla_nest_start_noflag(msg,
NL80211_ATTR_INTERFACE_COMBINATIONS);
if (!nl_combis)
goto nla_put_failure;
for (i = 0; i < wiphy->n_iface_combinations; i++) {
const struct ieee80211_iface_combination *c;
struct nlattr *nl_combi, *nl_limits;
c = &wiphy->iface_combinations[i];
nl_combi = nla_nest_start_noflag(msg, i + 1);
if (!nl_combi)
goto nla_put_failure;
nl_limits = nla_nest_start_noflag(msg,
NL80211_IFACE_COMB_LIMITS);
if (!nl_limits)
goto nla_put_failure;
for (j = 0; j < c->n_limits; j++) {
struct nlattr *nl_limit;
nl_limit = nla_nest_start_noflag(msg, j + 1);
if (!nl_limit)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
c->limits[j].max))
goto nla_put_failure;
if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
c->limits[j].types))
goto nla_put_failure;
nla_nest_end(msg, nl_limit);
}
nla_nest_end(msg, nl_limits);
if (c->beacon_int_infra_match &&
nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
c->num_different_channels) ||
nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
c->max_interfaces))
goto nla_put_failure;
if (large &&
(nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
c->radar_detect_widths) ||
nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
c->radar_detect_regions)))
goto nla_put_failure;
if (c->beacon_int_min_gcd &&
nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
c->beacon_int_min_gcd))
goto nla_put_failure;
nla_nest_end(msg, nl_combi);
}
nla_nest_end(msg, nl_combis);
return 0;
nla_put_failure:
return -ENOBUFS;
}
#ifdef CONFIG_PM
static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
struct sk_buff *msg)
{
const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
struct nlattr *nl_tcp;
if (!tcp)
return 0;
nl_tcp = nla_nest_start_noflag(msg,
NL80211_WOWLAN_TRIG_TCP_CONNECTION);
if (!nl_tcp)
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
tcp->data_payload_max))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
tcp->data_payload_max))
return -ENOBUFS;
if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
return -ENOBUFS;
if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
sizeof(*tcp->tok), tcp->tok))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
tcp->data_interval_max))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
tcp->wake_payload_max))
return -ENOBUFS;
nla_nest_end(msg, nl_tcp);
return 0;
}
static int nl80211_send_wowlan(struct sk_buff *msg,
struct cfg80211_registered_device *rdev,
bool large)
{
struct nlattr *nl_wowlan;
if (!rdev->wiphy.wowlan)
return 0;
nl_wowlan = nla_nest_start_noflag(msg,
NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
if (!nl_wowlan)
return -ENOBUFS;
if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
return -ENOBUFS;
if (rdev->wiphy.wowlan->n_patterns) {
struct nl80211_pattern_support pat = {
.max_patterns = rdev->wiphy.wowlan->n_patterns,
.min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
.max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
.max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
};
if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
sizeof(pat), &pat))
return -ENOBUFS;
}
if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
rdev->wiphy.wowlan->max_nd_match_sets))
return -ENOBUFS;
if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
return -ENOBUFS;
nla_nest_end(msg, nl_wowlan);
return 0;
}
#endif
static int nl80211_send_coalesce(struct sk_buff *msg,
struct cfg80211_registered_device *rdev)
{
struct nl80211_coalesce_rule_support rule;
if (!rdev->wiphy.coalesce)
return 0;
rule.max_rules = rdev->wiphy.coalesce->n_rules;
rule.max_delay = rdev->wiphy.coalesce->max_delay;
rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
return -ENOBUFS;
return 0;
}
static int
nl80211_send_iftype_data(struct sk_buff *msg,
const struct ieee80211_supported_band *sband,
const struct ieee80211_sband_iftype_data *iftdata)
{
const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
const struct ieee80211_sta_eht_cap *eht_cap = &iftdata->eht_cap;
if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
iftdata->types_mask))
return -ENOBUFS;
if (he_cap->has_he) {
if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
sizeof(he_cap->he_cap_elem.mac_cap_info),
he_cap->he_cap_elem.mac_cap_info) ||
nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
sizeof(he_cap->he_cap_elem.phy_cap_info),
he_cap->he_cap_elem.phy_cap_info) ||
nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
sizeof(he_cap->he_mcs_nss_supp),
&he_cap->he_mcs_nss_supp) ||
nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
return -ENOBUFS;
}
if (eht_cap->has_eht && he_cap->has_he) {
u8 mcs_nss_size, ppe_thresh_size;
u16 ppe_thres_hdr;
bool is_ap;
is_ap = iftdata->types_mask & BIT(NL80211_IFTYPE_AP) ||
iftdata->types_mask & BIT(NL80211_IFTYPE_P2P_GO);
mcs_nss_size =
ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
&eht_cap->eht_cap_elem,
is_ap);
ppe_thres_hdr = get_unaligned_le16(&eht_cap->eht_ppe_thres[0]);
ppe_thresh_size =
ieee80211_eht_ppe_size(ppe_thres_hdr,
eht_cap->eht_cap_elem.phy_cap_info);
if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MAC,
sizeof(eht_cap->eht_cap_elem.mac_cap_info),
eht_cap->eht_cap_elem.mac_cap_info) ||
nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PHY,
sizeof(eht_cap->eht_cap_elem.phy_cap_info),
eht_cap->eht_cap_elem.phy_cap_info) ||
nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MCS_SET,
mcs_nss_size, &eht_cap->eht_mcs_nss_supp) ||
nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PPE,
ppe_thresh_size, eht_cap->eht_ppe_thres))
return -ENOBUFS;
}
if (sband->band == NL80211_BAND_6GHZ &&
nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
sizeof(iftdata->he_6ghz_capa),
&iftdata->he_6ghz_capa))
return -ENOBUFS;
if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
iftdata->vendor_elems.len, iftdata->vendor_elems.data))
return -ENOBUFS;
return 0;
}
static int nl80211_send_band_rateinfo(struct sk_buff *msg,
struct ieee80211_supported_band *sband,
bool large)
{
struct nlattr *nl_rates, *nl_rate;
struct ieee80211_rate *rate;
int i;
/* add HT info */
if (sband->ht_cap.ht_supported &&
(nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
sizeof(sband->ht_cap.mcs),
&sband->ht_cap.mcs) ||
nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
sband->ht_cap.cap) ||
nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
sband->ht_cap.ampdu_factor) ||
nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
sband->ht_cap.ampdu_density)))
return -ENOBUFS;
/* add VHT info */
if (sband->vht_cap.vht_supported &&
(nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
sizeof(sband->vht_cap.vht_mcs),
&sband->vht_cap.vht_mcs) ||
nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
sband->vht_cap.cap)))
return -ENOBUFS;
if (large && sband->n_iftype_data) {
struct nlattr *nl_iftype_data =
nla_nest_start_noflag(msg,
NL80211_BAND_ATTR_IFTYPE_DATA);
int err;
if (!nl_iftype_data)
return -ENOBUFS;
for (i = 0; i < sband->n_iftype_data; i++) {
struct nlattr *iftdata;
iftdata = nla_nest_start_noflag(msg, i + 1);
if (!iftdata)
return -ENOBUFS;
err = nl80211_send_iftype_data(msg, sband,
&sband->iftype_data[i]);
if (err)
return err;
nla_nest_end(msg, iftdata);
}
nla_nest_end(msg, nl_iftype_data);
}
/* add EDMG info */
if (large && sband->edmg_cap.channels &&
(nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
sband->edmg_cap.channels) ||
nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
sband->edmg_cap.bw_config)))
return -ENOBUFS;
/* add bitrates */
nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
if (!nl_rates)
return -ENOBUFS;
for (i = 0; i < sband->n_bitrates; i++) {
nl_rate = nla_nest_start_noflag(msg, i);
if (!nl_rate)
return -ENOBUFS;
rate = &sband->bitrates[i];
if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
rate->bitrate))
return -ENOBUFS;
if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
nla_put_flag(msg,
NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
return -ENOBUFS;
nla_nest_end(msg, nl_rate);
}
nla_nest_end(msg, nl_rates);
/* S1G capabilities */
if (sband->band == NL80211_BAND_S1GHZ && sband->s1g_cap.s1g &&
(nla_put(msg, NL80211_BAND_ATTR_S1G_CAPA,
sizeof(sband->s1g_cap.cap),
sband->s1g_cap.cap) ||
nla_put(msg, NL80211_BAND_ATTR_S1G_MCS_NSS_SET,
sizeof(sband->s1g_cap.nss_mcs),
sband->s1g_cap.nss_mcs)))
return -ENOBUFS;
return 0;
}
static int
nl80211_send_mgmt_stypes(struct sk_buff *msg,
const struct ieee80211_txrx_stypes *mgmt_stypes)
{
u16 stypes;
struct nlattr *nl_ftypes, *nl_ifs;
enum nl80211_iftype ift;
int i;
if (!mgmt_stypes)
return 0;
nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
if (!nl_ifs)
return -ENOBUFS;
for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
nl_ftypes = nla_nest_start_noflag(msg, ift);
if (!nl_ftypes)
return -ENOBUFS;
i = 0;
stypes = mgmt_stypes[ift].tx;
while (stypes) {
if ((stypes & 1) &&
nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
(i << 4) | IEEE80211_FTYPE_MGMT))
return -ENOBUFS;
stypes >>= 1;
i++;
}
nla_nest_end(msg, nl_ftypes);
}
nla_nest_end(msg, nl_ifs);
nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
if (!nl_ifs)
return -ENOBUFS;
for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
nl_ftypes = nla_nest_start_noflag(msg, ift);
if (!nl_ftypes)
return -ENOBUFS;
i = 0;
stypes = mgmt_stypes[ift].rx;
while (stypes) {
if ((stypes & 1) &&
nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
(i << 4) | IEEE80211_FTYPE_MGMT))
return -ENOBUFS;
stypes >>= 1;
i++;
}
nla_nest_end(msg, nl_ftypes);
}
nla_nest_end(msg, nl_ifs);
return 0;
}
#define CMD(op, n) \
do { \
if (rdev->ops->op) { \
i++; \
if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
goto nla_put_failure; \
} \
} while (0)
static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
struct sk_buff *msg)
{
int i = 0;
/*
* do *NOT* add anything into this function, new things need to be
* advertised only to new versions of userspace that can deal with
* the split (and they can't possibly care about new features...
*/
CMD(add_virtual_intf, NEW_INTERFACE);
CMD(change_virtual_intf, SET_INTERFACE);
CMD(add_key, NEW_KEY);
CMD(start_ap, START_AP);
CMD(add_station, NEW_STATION);
CMD(add_mpath, NEW_MPATH);
CMD(update_mesh_config, SET_MESH_CONFIG);
CMD(change_bss, SET_BSS);
CMD(auth, AUTHENTICATE);
CMD(assoc, ASSOCIATE);
CMD(deauth, DEAUTHENTICATE);
CMD(disassoc, DISASSOCIATE);
CMD(join_ibss, JOIN_IBSS);
CMD(join_mesh, JOIN_MESH);
CMD(set_pmksa, SET_PMKSA);
CMD(del_pmksa, DEL_PMKSA);
CMD(flush_pmksa, FLUSH_PMKSA);
if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
CMD(remain_on_channel, REMAIN_ON_CHANNEL);
CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
CMD(mgmt_tx, FRAME);
CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
i++;
if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
goto nla_put_failure;
}
if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
rdev->ops->join_mesh) {
i++;
if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
goto nla_put_failure;
}
if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
CMD(tdls_mgmt, TDLS_MGMT);
CMD(tdls_oper, TDLS_OPER);
}
if (rdev->wiphy.max_sched_scan_reqs)
CMD(sched_scan_start, START_SCHED_SCAN);
CMD(probe_client, PROBE_CLIENT);
CMD(set_noack_map, SET_NOACK_MAP);
if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
i++;
if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
goto nla_put_failure;
}
CMD(start_p2p_device, START_P2P_DEVICE);
CMD(set_mcast_rate, SET_MCAST_RATE);
#ifdef CONFIG_NL80211_TESTMODE
CMD(testmode_cmd, TESTMODE);
#endif
if (rdev->ops->connect || rdev->ops->auth) {
i++;
if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
goto nla_put_failure;
}
if (rdev->ops->disconnect || rdev->ops->deauth) {
i++;
if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
goto nla_put_failure;
}
return i;
nla_put_failure:
return -ENOBUFS;
}
static int
nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
struct sk_buff *msg)
{
struct nlattr *ftm;
if (!cap->ftm.supported)
return 0;
ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
if (!ftm)
return -ENOBUFS;
if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
return -ENOBUFS;
if (cap->ftm.non_asap &&
nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
return -ENOBUFS;
if (cap->ftm.request_lci &&
nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
return -ENOBUFS;
if (cap->ftm.request_civicloc &&
nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
cap->ftm.preambles))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
cap->ftm.bandwidths))
return -ENOBUFS;
if (cap->ftm.max_bursts_exponent >= 0 &&
nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
cap->ftm.max_bursts_exponent))
return -ENOBUFS;
if (cap->ftm.max_ftms_per_burst &&
nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
cap->ftm.max_ftms_per_burst))
return -ENOBUFS;
if (cap->ftm.trigger_based &&
nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
return -ENOBUFS;
if (cap->ftm.non_trigger_based &&
nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
return -ENOBUFS;
nla_nest_end(msg, ftm);
return 0;
}
static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
struct sk_buff *msg)
{
const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
struct nlattr *pmsr, *caps;
if (!cap)
return 0;
/*
* we don't need to clean up anything here since the caller
* will genlmsg_cancel() if we fail
*/
pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
if (!pmsr)
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
return -ENOBUFS;
if (cap->report_ap_tsf &&
nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
return -ENOBUFS;
if (cap->randomize_mac_addr &&
nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
return -ENOBUFS;
caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
if (!caps)
return -ENOBUFS;
if (nl80211_send_pmsr_ftm_capa(cap, msg))
return -ENOBUFS;
nla_nest_end(msg, caps);
nla_nest_end(msg, pmsr);
return 0;
}
static int
nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
struct sk_buff *msg)
{
int i;
struct nlattr *nested, *nested_akms;
const struct wiphy_iftype_akm_suites *iftype_akms;
if (!rdev->wiphy.num_iftype_akm_suites ||
!rdev->wiphy.iftype_akm_suites)
return 0;
nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
if (!nested)
return -ENOBUFS;
for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
nested_akms = nla_nest_start(msg, i + 1);
if (!nested_akms)
return -ENOBUFS;
iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
iftype_akms->iftypes_mask))
return -ENOBUFS;
if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
sizeof(u32) * iftype_akms->n_akm_suites,
iftype_akms->akm_suites)) {
return -ENOBUFS;
}
nla_nest_end(msg, nested_akms);
}
nla_nest_end(msg, nested);
return 0;
}
static int
nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
struct sk_buff *msg)
{
struct nlattr *supp;
if (!rdev->wiphy.tid_config_support.vif &&
!rdev->wiphy.tid_config_support.peer)
return 0;
supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
if (!supp)
return -ENOSPC;
if (rdev->wiphy.tid_config_support.vif &&
nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
rdev->wiphy.tid_config_support.vif,
NL80211_TID_CONFIG_ATTR_PAD))
goto fail;
if (rdev->wiphy.tid_config_support.peer &&
nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
rdev->wiphy.tid_config_support.peer,
NL80211_TID_CONFIG_ATTR_PAD))
goto fail;
/* for now we just use the same value ... makes more sense */
if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
rdev->wiphy.tid_config_support.max_retry))
goto fail;
if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
rdev->wiphy.tid_config_support.max_retry))
goto fail;
nla_nest_end(msg, supp);
return 0;
fail:
nla_nest_cancel(msg, supp);
return -ENOBUFS;
}
static int
nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
struct sk_buff *msg)
{
struct nlattr *sar_capa, *specs, *sub_freq_range;
u8 num_freq_ranges;
int i;
if (!rdev->wiphy.sar_capa)
return 0;
num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
if (!sar_capa)
return -ENOSPC;
if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
goto fail;
specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
if (!specs)
goto fail;
/* report supported freq_ranges */
for (i = 0; i < num_freq_ranges; i++) {
sub_freq_range = nla_nest_start(msg, i + 1);
if (!sub_freq_range)
goto fail;
if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
goto fail;
if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
goto fail;
nla_nest_end(msg, sub_freq_range);
}
nla_nest_end(msg, specs);
nla_nest_end(msg, sar_capa);
return 0;
fail:
nla_nest_cancel(msg, sar_capa);
return -ENOBUFS;
}
static int nl80211_put_mbssid_support(struct wiphy *wiphy, struct sk_buff *msg)
{
struct nlattr *config;
if (!wiphy->mbssid_max_interfaces)
return 0;
config = nla_nest_start(msg, NL80211_ATTR_MBSSID_CONFIG);
if (!config)
return -ENOBUFS;
if (nla_put_u8(msg, NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES,
wiphy->mbssid_max_interfaces))
goto fail;
if (wiphy->ema_max_profile_periodicity &&
nla_put_u8(msg,
NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY,
wiphy->ema_max_profile_periodicity))
goto fail;
nla_nest_end(msg, config);
return 0;
fail:
nla_nest_cancel(msg, config);
return -ENOBUFS;
}
struct nl80211_dump_wiphy_state {
s64 filter_wiphy;
long start;
long split_start, band_start, chan_start, capa_start;
bool split;
};
static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
enum nl80211_commands cmd,
struct sk_buff *msg, u32 portid, u32 seq,
int flags, struct nl80211_dump_wiphy_state *state)
{
void *hdr;
struct nlattr *nl_bands, *nl_band;
struct nlattr *nl_freqs, *nl_freq;
struct nlattr *nl_cmds;
enum nl80211_band band;
struct ieee80211_channel *chan;
int i;
const struct ieee80211_txrx_stypes *mgmt_stypes =
rdev->wiphy.mgmt_stypes;
u32 features;
hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
if (!hdr)
return -ENOBUFS;
if (WARN_ON(!state))
return -EINVAL;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
wiphy_name(&rdev->wiphy)) ||
nla_put_u32(msg, NL80211_ATTR_GENERATION,
cfg80211_rdev_list_generation))
goto nla_put_failure;
if (cmd != NL80211_CMD_NEW_WIPHY)
goto finish;
switch (state->split_start) {
case 0:
if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
rdev->wiphy.retry_short) ||
nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
rdev->wiphy.retry_long) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
rdev->wiphy.frag_threshold) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
rdev->wiphy.rts_threshold) ||
nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
rdev->wiphy.coverage_class) ||
nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
rdev->wiphy.max_scan_ssids) ||
nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
rdev->wiphy.max_sched_scan_ssids) ||
nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
rdev->wiphy.max_scan_ie_len) ||
nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
rdev->wiphy.max_sched_scan_ie_len) ||
nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
rdev->wiphy.max_match_sets))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
goto nla_put_failure;
state->split_start++;
if (state->split)
break;
fallthrough;
case 1:
if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
sizeof(u32) * rdev->wiphy.n_cipher_suites,
rdev->wiphy.cipher_suites))
goto nla_put_failure;
if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
rdev->wiphy.max_num_pmkids))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
rdev->wiphy.available_antennas_tx) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
rdev->wiphy.available_antennas_rx))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
rdev->wiphy.probe_resp_offload))
goto nla_put_failure;
if ((rdev->wiphy.available_antennas_tx ||
rdev->wiphy.available_antennas_rx) &&
rdev->ops->get_antenna) {
u32 tx_ant = 0, rx_ant = 0;
int res;
res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
if (!res) {
if (nla_put_u32(msg,
NL80211_ATTR_WIPHY_ANTENNA_TX,
tx_ant) ||
nla_put_u32(msg,
NL80211_ATTR_WIPHY_ANTENNA_RX,
rx_ant))
goto nla_put_failure;
}
}
state->split_start++;
if (state->split)
break;
fallthrough;
case 2:
if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
rdev->wiphy.interface_modes))
goto nla_put_failure;
state->split_start++;
if (state->split)
break;
fallthrough;
case 3:
nl_bands = nla_nest_start_noflag(msg,
NL80211_ATTR_WIPHY_BANDS);
if (!nl_bands)
goto nla_put_failure;
for (band = state->band_start;
band < (state->split ?
NUM_NL80211_BANDS :
NL80211_BAND_60GHZ + 1);
band++) {
struct ieee80211_supported_band *sband;
/* omit higher bands for ancient software */
if (band > NL80211_BAND_5GHZ && !state->split)
break;
sband = rdev->wiphy.bands[band];
if (!sband)
continue;
nl_band = nla_nest_start_noflag(msg, band);
if (!nl_band)
goto nla_put_failure;
switch (state->chan_start) {
case 0:
if (nl80211_send_band_rateinfo(msg, sband,
state->split))
goto nla_put_failure;
state->chan_start++;
if (state->split)
break;
fallthrough;
default:
/* add frequencies */
nl_freqs = nla_nest_start_noflag(msg,
NL80211_BAND_ATTR_FREQS);
if (!nl_freqs)
goto nla_put_failure;
for (i = state->chan_start - 1;
i < sband->n_channels;
i++) {
nl_freq = nla_nest_start_noflag(msg,
i);
if (!nl_freq)
goto nla_put_failure;
chan = &sband->channels[i];
if (nl80211_msg_put_channel(
msg, &rdev->wiphy, chan,
state->split))
goto nla_put_failure;
nla_nest_end(msg, nl_freq);
if (state->split)
break;
}
if (i < sband->n_channels)
state->chan_start = i + 2;
else
state->chan_start = 0;
nla_nest_end(msg, nl_freqs);
}
nla_nest_end(msg, nl_band);
if (state->split) {
/* start again here */
if (state->chan_start)
band--;
break;
}
}
nla_nest_end(msg, nl_bands);
if (band < NUM_NL80211_BANDS)
state->band_start = band + 1;
else
state->band_start = 0;
/* if bands & channels are done, continue outside */
if (state->band_start == 0 && state->chan_start == 0)
state->split_start++;
if (state->split)
break;
fallthrough;
case 4:
nl_cmds = nla_nest_start_noflag(msg,
NL80211_ATTR_SUPPORTED_COMMANDS);
if (!nl_cmds)
goto nla_put_failure;
i = nl80211_add_commands_unsplit(rdev, msg);
if (i < 0)
goto nla_put_failure;
if (state->split) {
CMD(crit_proto_start, CRIT_PROTOCOL_START);
CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
CMD(channel_switch, CHANNEL_SWITCH);
CMD(set_qos_map, SET_QOS_MAP);
if (rdev->wiphy.features &
NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
CMD(add_tx_ts, ADD_TX_TS);
CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
CMD(update_ft_ies, UPDATE_FT_IES);
if (rdev->wiphy.sar_capa)
CMD(set_sar_specs, SET_SAR_SPECS);
}
#undef CMD
nla_nest_end(msg, nl_cmds);
state->split_start++;
if (state->split)
break;
fallthrough;
case 5:
if (rdev->ops->remain_on_channel &&
(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
nla_put_u32(msg,
NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
rdev->wiphy.max_remain_on_channel_duration))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
goto nla_put_failure;
state->split_start++;
if (state->split)
break;
fallthrough;
case 6:
#ifdef CONFIG_PM
if (nl80211_send_wowlan(msg, rdev, state->split))
goto nla_put_failure;
state->split_start++;
if (state->split)
break;
#else
state->split_start++;
#endif
fallthrough;
case 7:
if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
rdev->wiphy.software_iftypes))
goto nla_put_failure;
if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
state->split))
goto nla_put_failure;
state->split_start++;
if (state->split)
break;
fallthrough;
case 8:
if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
rdev->wiphy.ap_sme_capa))
goto nla_put_failure;
features = rdev->wiphy.features;
/*
* We can only add the per-channel limit information if the
* dump is split, otherwise it makes it too big. Therefore
* only advertise it in that case.
*/
if (state->split)
features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
goto nla_put_failure;
if (rdev->wiphy.ht_capa_mod_mask &&
nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
sizeof(*rdev->wiphy.ht_capa_mod_mask),
rdev->wiphy.ht_capa_mod_mask))
goto nla_put_failure;
if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
rdev->wiphy.max_acl_mac_addrs &&
nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
rdev->wiphy.max_acl_mac_addrs))
goto nla_put_failure;
/*
* Any information below this point is only available to
* applications that can deal with it being split. This
* helps ensure that newly added capabilities don't break
* older tools by overrunning their buffers.
*
* We still increment split_start so that in the split
* case we'll continue with more data in the next round,
* but break unconditionally so unsplit data stops here.
*/
if (state->split)
state->split_start++;
else
state->split_start = 0;
break;
case 9:
if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
rdev->wiphy.max_sched_scan_plans) ||
nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
rdev->wiphy.max_sched_scan_plan_interval) ||
nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
rdev->wiphy.max_sched_scan_plan_iterations))
goto nla_put_failure;
if (rdev->wiphy.extended_capabilities &&
(nla_put(msg, NL80211_ATTR_EXT_CAPA,
rdev->wiphy.extended_capabilities_len,
rdev->wiphy.extended_capabilities) ||
nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
rdev->wiphy.extended_capabilities_len,
rdev->wiphy.extended_capabilities_mask)))
goto nla_put_failure;
if (rdev->wiphy.vht_capa_mod_mask &&
nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
sizeof(*rdev->wiphy.vht_capa_mod_mask),
rdev->wiphy.vht_capa_mod_mask))
goto nla_put_failure;
if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
rdev->wiphy.perm_addr))
goto nla_put_failure;
if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
rdev->wiphy.addr_mask))
goto nla_put_failure;
if (rdev->wiphy.n_addresses > 1) {
void *attr;
attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
if (!attr)
goto nla_put_failure;
for (i = 0; i < rdev->wiphy.n_addresses; i++)
if (nla_put(msg, i + 1, ETH_ALEN,
rdev->wiphy.addresses[i].addr))
goto nla_put_failure;
nla_nest_end(msg, attr);
}
state->split_start++;
break;
case 10:
if (nl80211_send_coalesce(msg, rdev))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
(nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
goto nla_put_failure;
if (rdev->wiphy.max_ap_assoc_sta &&
nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
rdev->wiphy.max_ap_assoc_sta))
goto nla_put_failure;
state->split_start++;
break;
case 11:
if (rdev->wiphy.n_vendor_commands) {
const struct nl80211_vendor_cmd_info *info;
struct nlattr *nested;
nested = nla_nest_start_noflag(msg,
NL80211_ATTR_VENDOR_DATA);
if (!nested)
goto nla_put_failure;
for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
info = &rdev->wiphy.vendor_commands[i].info;
if (nla_put(msg, i + 1, sizeof(*info), info))
goto nla_put_failure;
}
nla_nest_end(msg, nested);
}
if (rdev->wiphy.n_vendor_events) {
const struct nl80211_vendor_cmd_info *info;
struct nlattr *nested;
nested = nla_nest_start_noflag(msg,
NL80211_ATTR_VENDOR_EVENTS);
if (!nested)
goto nla_put_failure;
for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
info = &rdev->wiphy.vendor_events[i];
if (nla_put(msg, i + 1, sizeof(*info), info))
goto nla_put_failure;
}
nla_nest_end(msg, nested);
}
state->split_start++;
break;
case 12:
if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
rdev->wiphy.max_num_csa_counters))
goto nla_put_failure;
if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
goto nla_put_failure;
if (rdev->wiphy.max_sched_scan_reqs &&
nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
rdev->wiphy.max_sched_scan_reqs))
goto nla_put_failure;
if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
sizeof(rdev->wiphy.ext_features),
rdev->wiphy.ext_features))
goto nla_put_failure;
if (rdev->wiphy.bss_select_support) {
struct nlattr *nested;
u32 bss_select_support = rdev->wiphy.bss_select_support;
nested = nla_nest_start_noflag(msg,
NL80211_ATTR_BSS_SELECT);
if (!nested)
goto nla_put_failure;
i = 0;
while (bss_select_support) {
if ((bss_select_support & 1) &&
nla_put_flag(msg, i))
goto nla_put_failure;
i++;
bss_select_support >>= 1;
}
nla_nest_end(msg, nested);
}
state->split_start++;
break;
case 13:
if (rdev->wiphy.num_iftype_ext_capab &&
rdev->wiphy.iftype_ext_capab) {
struct nlattr *nested_ext_capab, *nested;
nested = nla_nest_start_noflag(msg,
NL80211_ATTR_IFTYPE_EXT_CAPA);
if (!nested)
goto nla_put_failure;
for (i = state->capa_start;
i < rdev->wiphy.num_iftype_ext_capab; i++) {
const struct wiphy_iftype_ext_capab *capab;
capab = &rdev->wiphy.iftype_ext_capab[i];
nested_ext_capab = nla_nest_start_noflag(msg,
i);
if (!nested_ext_capab ||
nla_put_u32(msg, NL80211_ATTR_IFTYPE,
capab->iftype) ||
nla_put(msg, NL80211_ATTR_EXT_CAPA,
capab->extended_capabilities_len,
capab->extended_capabilities) ||
nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
capab->extended_capabilities_len,
capab->extended_capabilities_mask))
goto nla_put_failure;
if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO &&
(nla_put_u16(msg,
NL80211_ATTR_EML_CAPABILITY,
capab->eml_capabilities) ||
nla_put_u16(msg,
NL80211_ATTR_MLD_CAPA_AND_OPS,
capab->mld_capa_and_ops)))
goto nla_put_failure;
nla_nest_end(msg, nested_ext_capab);
if (state->split)
break;
}
nla_nest_end(msg, nested);
if (i < rdev->wiphy.num_iftype_ext_capab) {
state->capa_start = i + 1;
break;
}
}
if (nla_put_u32(msg, NL80211_ATTR_BANDS,
rdev->wiphy.nan_supported_bands))
goto nla_put_failure;
if (wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_TXQS)) {
struct cfg80211_txq_stats txqstats = {};
int res;
res = rdev_get_txq_stats(rdev, NULL, &txqstats);
if (!res &&
!nl80211_put_txq_stats(msg, &txqstats,
NL80211_ATTR_TXQ_STATS))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
rdev->wiphy.txq_limit))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
rdev->wiphy.txq_memory_limit))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
rdev->wiphy.txq_quantum))
goto nla_put_failure;
}
state->split_start++;
break;
case 14:
if (nl80211_send_pmsr_capa(rdev, msg))
goto nla_put_failure;
state->split_start++;
break;
case 15:
if (rdev->wiphy.akm_suites &&
nla_put(msg, NL80211_ATTR_AKM_SUITES,
sizeof(u32) * rdev->wiphy.n_akm_suites,
rdev->wiphy.akm_suites))
goto nla_put_failure;
if (nl80211_put_iftype_akm_suites(rdev, msg))
goto nla_put_failure;
if (nl80211_put_tid_config_support(rdev, msg))
goto nla_put_failure;
state->split_start++;
break;
case 16:
if (nl80211_put_sar_specs(rdev, msg))
goto nla_put_failure;
if (nl80211_put_mbssid_support(&rdev->wiphy, msg))
goto nla_put_failure;
if (nla_put_u16(msg, NL80211_ATTR_MAX_NUM_AKM_SUITES,
rdev->wiphy.max_num_akm_suites))
goto nla_put_failure;
if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)
nla_put_flag(msg, NL80211_ATTR_MLO_SUPPORT);
if (rdev->wiphy.hw_timestamp_max_peers &&
nla_put_u16(msg, NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS,
rdev->wiphy.hw_timestamp_max_peers))
goto nla_put_failure;
/* done */
state->split_start = 0;
break;
}
finish:
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
struct netlink_callback *cb,
struct nl80211_dump_wiphy_state *state)
{
struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
int ret;
if (!tb)
return -ENOMEM;
ret = nlmsg_parse_deprecated(cb->nlh,
GENL_HDRLEN + nl80211_fam.hdrsize,
tb, nl80211_fam.maxattr,
nl80211_policy, NULL);
/* ignore parse errors for backward compatibility */
if (ret) {
ret = 0;
goto out;
}
state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
if (tb[NL80211_ATTR_WIPHY])
state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
if (tb[NL80211_ATTR_WDEV])
state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
if (tb[NL80211_ATTR_IFINDEX]) {
struct net_device *netdev;
struct cfg80211_registered_device *rdev;
int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
if (!netdev) {
ret = -ENODEV;
goto out;
}
if (netdev->ieee80211_ptr) {
rdev = wiphy_to_rdev(
netdev->ieee80211_ptr->wiphy);
state->filter_wiphy = rdev->wiphy_idx;
}
}
ret = 0;
out:
kfree(tb);
return ret;
}
static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
{
int idx = 0, ret;
struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
struct cfg80211_registered_device *rdev;
rtnl_lock();
if (!state) {
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (!state) {
rtnl_unlock();
return -ENOMEM;
}
state->filter_wiphy = -1;
ret = nl80211_dump_wiphy_parse(skb, cb, state);
if (ret) {
kfree(state);
rtnl_unlock();
return ret;
}
cb->args[0] = (long)state;
}
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
continue;
if (++idx <= state->start)
continue;
if (state->filter_wiphy != -1 &&
state->filter_wiphy != rdev->wiphy_idx)
continue;
wiphy_lock(&rdev->wiphy);
/* attempt to fit multiple wiphy data chunks into the skb */
do {
ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
skb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
NLM_F_MULTI, state);
if (ret < 0) {
/*
* If sending the wiphy data didn't fit (ENOBUFS
* or EMSGSIZE returned), this SKB is still
* empty (so it's not too big because another
* wiphy dataset is already in the skb) and
* we've not tried to adjust the dump allocation
* yet ... then adjust the alloc size to be
* bigger, and return 1 but with the empty skb.
* This results in an empty message being RX'ed
* in userspace, but that is ignored.
*
* We can then retry with the larger buffer.
*/
if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
!skb->len && !state->split &&
cb->min_dump_alloc < 4096) {
cb->min_dump_alloc = 4096;
state->split_start = 0;
wiphy_unlock(&rdev->wiphy);
rtnl_unlock();
return 1;
}
idx--;
break;
}
} while (state->split_start > 0);
wiphy_unlock(&rdev->wiphy);
break;
}
rtnl_unlock();
state->start = idx;
return skb->len;
}
static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
{
kfree((void *)cb->args[0]);
return 0;
}
static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
{
struct sk_buff *msg;
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct nl80211_dump_wiphy_state state = {};
msg = nlmsg_new(4096, GFP_KERNEL);
if (!msg)
return -ENOMEM;
if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
info->snd_portid, info->snd_seq, 0,
&state) < 0) {
nlmsg_free(msg);
return -ENOBUFS;
}
return genlmsg_reply(msg, info);
}
static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
[NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
[NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
[NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
[NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
[NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
};
static int parse_txq_params(struct nlattr *tb[],
struct ieee80211_txq_params *txq_params)
{
u8 ac;
if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
!tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
!tb[NL80211_TXQ_ATTR_AIFS])
return -EINVAL;
ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
if (ac >= NL80211_NUM_ACS)
return -EINVAL;
txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
return 0;
}
static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
{
/*
* You can only set the channel explicitly for some interfaces,
* most have their channel managed via their respective
* "establish a connection" command (connect, join, ...)
*
* For AP/GO and mesh mode, the channel can be set with the
* channel userspace API, but is only stored and passed to the
* low-level driver when the AP starts or the mesh is joined.
* This is for backward compatibility, userspace can also give
* the channel in the start-ap or join-mesh commands instead.
*
* Monitors are special as they are normally slaved to
* whatever else is going on, so they have their own special
* operation to set the monitor channel if possible.
*/
return !wdev ||
wdev->iftype == NL80211_IFTYPE_AP ||
wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
wdev->iftype == NL80211_IFTYPE_MONITOR ||
wdev->iftype == NL80211_IFTYPE_P2P_GO;
}
static int nl80211_parse_punct_bitmap(struct cfg80211_registered_device *rdev,
struct genl_info *info,
const struct cfg80211_chan_def *chandef,
u16 *punct_bitmap)
{
if (!wiphy_ext_feature_isset(&rdev->wiphy, NL80211_EXT_FEATURE_PUNCT))
return -EINVAL;
*punct_bitmap = nla_get_u32(info->attrs[NL80211_ATTR_PUNCT_BITMAP]);
if (!cfg80211_valid_disable_subchannel_bitmap(punct_bitmap, chandef))
return -EINVAL;
return 0;
}
int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
struct genl_info *info,
struct cfg80211_chan_def *chandef)
{
struct netlink_ext_ack *extack = info->extack;
struct nlattr **attrs = info->attrs;
u32 control_freq;
if (!attrs[NL80211_ATTR_WIPHY_FREQ]) {
NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
"Frequency is missing");
return -EINVAL;
}
control_freq = MHZ_TO_KHZ(
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
control_freq +=
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
memset(chandef, 0, sizeof(*chandef));
chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
chandef->freq1_offset = control_freq % 1000;
chandef->center_freq2 = 0;
/* Primary channel not allowed */
if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
"Channel is disabled");
return -EINVAL;
}
if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
enum nl80211_channel_type chantype;
chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
switch (chantype) {
case NL80211_CHAN_NO_HT:
case NL80211_CHAN_HT20:
case NL80211_CHAN_HT40PLUS:
case NL80211_CHAN_HT40MINUS:
cfg80211_chandef_create(chandef, chandef->chan,
chantype);
/* user input for center_freq is incorrect */
if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
NL_SET_ERR_MSG_ATTR(extack,
attrs[NL80211_ATTR_CENTER_FREQ1],
"bad center frequency 1");
return -EINVAL;
}
/* center_freq2 must be zero */
if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
NL_SET_ERR_MSG_ATTR(extack,
attrs[NL80211_ATTR_CENTER_FREQ2],
"center frequency 2 can't be used");
return -EINVAL;
}
break;
default:
NL_SET_ERR_MSG_ATTR(extack,
attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
"invalid channel type");
return -EINVAL;
}
} else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
chandef->width =
nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
if (chandef->chan->band == NL80211_BAND_S1GHZ) {
/* User input error for channel width doesn't match channel */
if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
NL_SET_ERR_MSG_ATTR(extack,
attrs[NL80211_ATTR_CHANNEL_WIDTH],
"bad channel width");
return -EINVAL;
}
}
if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
chandef->center_freq1 =
nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
chandef->freq1_offset = nla_get_u32(
attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
else
chandef->freq1_offset = 0;
}
if (attrs[NL80211_ATTR_CENTER_FREQ2])
chandef->center_freq2 =
nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
}
if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
chandef->edmg.channels =
nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
chandef->edmg.bw_config =
nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
} else {
chandef->edmg.bw_config = 0;
chandef->edmg.channels = 0;
}
if (!cfg80211_chandef_valid(chandef)) {
NL_SET_ERR_MSG(extack, "invalid channel definition");
return -EINVAL;
}
if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
IEEE80211_CHAN_DISABLED)) {
NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
return -EINVAL;
}
if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
chandef->width == NL80211_CHAN_WIDTH_10) &&
!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
return -EINVAL;
}
return 0;
}
static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
struct net_device *dev,
struct genl_info *info,
int _link_id)
{
struct cfg80211_chan_def chandef;
int result;
enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
struct wireless_dev *wdev = NULL;
int link_id = _link_id;
if (dev)
wdev = dev->ieee80211_ptr;
if (!nl80211_can_set_dev_channel(wdev))
return -EOPNOTSUPP;
if (wdev)
iftype = wdev->iftype;
if (link_id < 0) {
if (wdev && wdev->valid_links)
return -EINVAL;
link_id = 0;
}
result = nl80211_parse_chandef(rdev, info, &chandef);
if (result)
return result;
switch (iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_P2P_GO:
if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
iftype))
return -EINVAL;
if (wdev->links[link_id].ap.beacon_interval) {
struct ieee80211_channel *cur_chan;
if (!dev || !rdev->ops->set_ap_chanwidth ||
!(rdev->wiphy.features &
NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE))
return -EBUSY;
/* Only allow dynamic channel width changes */
cur_chan = wdev->links[link_id].ap.chandef.chan;
if (chandef.chan != cur_chan)
return -EBUSY;
result = rdev_set_ap_chanwidth(rdev, dev, link_id,
&chandef);
if (result)
return result;
wdev->links[link_id].ap.chandef = chandef;
} else {
wdev->u.ap.preset_chandef = chandef;
}
return 0;
case NL80211_IFTYPE_MESH_POINT:
return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
case NL80211_IFTYPE_MONITOR:
return cfg80211_set_monitor_channel(rdev, &chandef);
default:
break;
}
return -EINVAL;
}
static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int link_id = nl80211_link_id_or_invalid(info->attrs);
struct net_device *netdev = info->user_ptr[1];
int ret;
wdev_lock(netdev->ieee80211_ptr);
ret = __nl80211_set_channel(rdev, netdev, info, link_id);
wdev_unlock(netdev->ieee80211_ptr);
return ret;
}
static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = NULL;
struct net_device *netdev = NULL;
struct wireless_dev *wdev;
int result = 0, rem_txq_params = 0;
struct nlattr *nl_txq_params;
u32 changed;
u8 retry_short = 0, retry_long = 0;
u32 frag_threshold = 0, rts_threshold = 0;
u8 coverage_class = 0;
u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
rtnl_lock();
/*
* Try to find the wiphy and netdev. Normally this
* function shouldn't need the netdev, but this is
* done for backward compatibility -- previously
* setting the channel was done per wiphy, but now
* it is per netdev. Previous userland like hostapd
* also passed a netdev to set_wiphy, so that it is
* possible to let that go to the right netdev!
*/
if (info->attrs[NL80211_ATTR_IFINDEX]) {
int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
netdev = __dev_get_by_index(genl_info_net(info), ifindex);
if (netdev && netdev->ieee80211_ptr)
rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
else
netdev = NULL;
}
if (!netdev) {
rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
info->attrs);
if (IS_ERR(rdev)) {
rtnl_unlock();
return PTR_ERR(rdev);
}
wdev = NULL;
netdev = NULL;
result = 0;
} else
wdev = netdev->ieee80211_ptr;
wiphy_lock(&rdev->wiphy);
/*
* end workaround code, by now the rdev is available
* and locked, and wdev may or may not be NULL.
*/
if (info->attrs[NL80211_ATTR_WIPHY_NAME])
result = cfg80211_dev_rename(
rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
rtnl_unlock();
if (result)
goto out;
if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
struct ieee80211_txq_params txq_params;
struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
if (!rdev->ops->set_txq_params) {
result = -EOPNOTSUPP;
goto out;
}
if (!netdev) {
result = -EINVAL;
goto out;
}
if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
result = -EINVAL;
goto out;
}
if (!netif_running(netdev)) {
result = -ENETDOWN;
goto out;
}
nla_for_each_nested(nl_txq_params,
info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
rem_txq_params) {
result = nla_parse_nested_deprecated(tb,
NL80211_TXQ_ATTR_MAX,
nl_txq_params,
txq_params_policy,
info->extack);
if (result)
goto out;
result = parse_txq_params(tb, &txq_params);
if (result)
goto out;
txq_params.link_id =
nl80211_link_id_or_invalid(info->attrs);
wdev_lock(netdev->ieee80211_ptr);
if (txq_params.link_id >= 0 &&
!(netdev->ieee80211_ptr->valid_links &
BIT(txq_params.link_id)))
result = -ENOLINK;
else if (txq_params.link_id >= 0 &&
!netdev->ieee80211_ptr->valid_links)
result = -EINVAL;
else
result = rdev_set_txq_params(rdev, netdev,
&txq_params);
wdev_unlock(netdev->ieee80211_ptr);
if (result)
goto out;
}
}
if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
int link_id = nl80211_link_id_or_invalid(info->attrs);
if (wdev) {
wdev_lock(wdev);
result = __nl80211_set_channel(
rdev,
nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
info, link_id);
wdev_unlock(wdev);
} else {
result = __nl80211_set_channel(rdev, netdev, info, link_id);
}
if (result)
goto out;
}
if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
struct wireless_dev *txp_wdev = wdev;
enum nl80211_tx_power_setting type;
int idx, mbm = 0;
if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
txp_wdev = NULL;
if (!rdev->ops->set_tx_power) {
result = -EOPNOTSUPP;
goto out;
}
idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
type = nla_get_u32(info->attrs[idx]);
if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
(type != NL80211_TX_POWER_AUTOMATIC)) {
result = -EINVAL;
goto out;
}
if (type != NL80211_TX_POWER_AUTOMATIC) {
idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
mbm = nla_get_u32(info->attrs[idx]);
}
result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
if (result)
goto out;
}
if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
u32 tx_ant, rx_ant;
if ((!rdev->wiphy.available_antennas_tx &&
!rdev->wiphy.available_antennas_rx) ||
!rdev->ops->set_antenna) {
result = -EOPNOTSUPP;
goto out;
}
tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
/* reject antenna configurations which don't match the
* available antenna masks, except for the "all" mask */
if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
(~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
result = -EINVAL;
goto out;
}
tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
result = rdev_set_antenna(rdev, tx_ant, rx_ant);
if (result)
goto out;
}
changed = 0;
if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
retry_short = nla_get_u8(
info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
changed |= WIPHY_PARAM_RETRY_SHORT;
}
if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
retry_long = nla_get_u8(
info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
changed |= WIPHY_PARAM_RETRY_LONG;
}
if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
frag_threshold = nla_get_u32(
info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
if (frag_threshold < 256) {
result = -EINVAL;
goto out;
}
if (frag_threshold != (u32) -1) {
/*
* Fragments (apart from the last one) are required to
* have even length. Make the fragmentation code
* simpler by stripping LSB should someone try to use
* odd threshold value.
*/
frag_threshold &= ~0x1;
}
changed |= WIPHY_PARAM_FRAG_THRESHOLD;
}
if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
rts_threshold = nla_get_u32(
info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
changed |= WIPHY_PARAM_RTS_THRESHOLD;
}
if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
result = -EINVAL;
goto out;
}
coverage_class = nla_get_u8(
info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
changed |= WIPHY_PARAM_COVERAGE_CLASS;
}
if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
result = -EOPNOTSUPP;
goto out;
}
changed |= WIPHY_PARAM_DYN_ACK;
}
if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_TXQS)) {
result = -EOPNOTSUPP;
goto out;
}
txq_limit = nla_get_u32(
info->attrs[NL80211_ATTR_TXQ_LIMIT]);
changed |= WIPHY_PARAM_TXQ_LIMIT;
}
if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_TXQS)) {
result = -EOPNOTSUPP;
goto out;
}
txq_memory_limit = nla_get_u32(
info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
}
if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_TXQS)) {
result = -EOPNOTSUPP;
goto out;
}
txq_quantum = nla_get_u32(
info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
changed |= WIPHY_PARAM_TXQ_QUANTUM;
}
if (changed) {
u8 old_retry_short, old_retry_long;
u32 old_frag_threshold, old_rts_threshold;
u8 old_coverage_class;
u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
if (!rdev->ops->set_wiphy_params) {
result = -EOPNOTSUPP;
goto out;
}
old_retry_short = rdev->wiphy.retry_short;
old_retry_long = rdev->wiphy.retry_long;
old_frag_threshold = rdev->wiphy.frag_threshold;
old_rts_threshold = rdev->wiphy.rts_threshold;
old_coverage_class = rdev->wiphy.coverage_class;
old_txq_limit = rdev->wiphy.txq_limit;
old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
old_txq_quantum = rdev->wiphy.txq_quantum;
if (changed & WIPHY_PARAM_RETRY_SHORT)
rdev->wiphy.retry_short = retry_short;
if (changed & WIPHY_PARAM_RETRY_LONG)
rdev->wiphy.retry_long = retry_long;
if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
rdev->wiphy.frag_threshold = frag_threshold;
if (changed & WIPHY_PARAM_RTS_THRESHOLD)
rdev->wiphy.rts_threshold = rts_threshold;
if (changed & WIPHY_PARAM_COVERAGE_CLASS)
rdev->wiphy.coverage_class = coverage_class;
if (changed & WIPHY_PARAM_TXQ_LIMIT)
rdev->wiphy.txq_limit = txq_limit;
if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
rdev->wiphy.txq_memory_limit = txq_memory_limit;
if (changed & WIPHY_PARAM_TXQ_QUANTUM)
rdev->wiphy.txq_quantum = txq_quantum;
result = rdev_set_wiphy_params(rdev, changed);
if (result) {
rdev->wiphy.retry_short = old_retry_short;
rdev->wiphy.retry_long = old_retry_long;
rdev->wiphy.frag_threshold = old_frag_threshold;
rdev->wiphy.rts_threshold = old_rts_threshold;
rdev->wiphy.coverage_class = old_coverage_class;
rdev->wiphy.txq_limit = old_txq_limit;
rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
rdev->wiphy.txq_quantum = old_txq_quantum;
goto out;
}
}
result = 0;
out:
wiphy_unlock(&rdev->wiphy);
return result;
}
int nl80211_send_chandef(struct sk_buff *msg, const struct cfg80211_chan_def *chandef)
{
if (WARN_ON(!cfg80211_chandef_valid(chandef)))
return -EINVAL;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
chandef->chan->center_freq))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
chandef->chan->freq_offset))
return -ENOBUFS;
switch (chandef->width) {
case NL80211_CHAN_WIDTH_20_NOHT:
case NL80211_CHAN_WIDTH_20:
case NL80211_CHAN_WIDTH_40:
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
cfg80211_get_chandef_type(chandef)))
return -ENOBUFS;
break;
default:
break;
}
if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
return -ENOBUFS;
if (chandef->center_freq2 &&
nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
return -ENOBUFS;
return 0;
}
EXPORT_SYMBOL(nl80211_send_chandef);
static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
enum nl80211_commands cmd)
{
struct net_device *dev = wdev->netdev;
void *hdr;
WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
cmd != NL80211_CMD_DEL_INTERFACE &&
cmd != NL80211_CMD_SET_INTERFACE);
hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
if (!hdr)
return -1;
if (dev &&
(nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
nla_put_u32(msg, NL80211_ATTR_GENERATION,
rdev->devlist_generation ^
(cfg80211_rdev_list_generation << 2)) ||
nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
goto nla_put_failure;
if (rdev->ops->get_channel && !wdev->valid_links) {
struct cfg80211_chan_def chandef = {};
int ret;
ret = rdev_get_channel(rdev, wdev, 0, &chandef);
if (ret == 0 && nl80211_send_chandef(msg, &chandef))
goto nla_put_failure;
}
if (rdev->ops->get_tx_power) {
int dbm, ret;
ret = rdev_get_tx_power(rdev, wdev, &dbm);
if (ret == 0 &&
nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
DBM_TO_MBM(dbm)))
goto nla_put_failure;
}
wdev_lock(wdev);
switch (wdev->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_P2P_GO:
if (wdev->u.ap.ssid_len &&
nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
wdev->u.ap.ssid))
goto nla_put_failure_locked;
break;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
if (wdev->u.client.ssid_len &&
nla_put(msg, NL80211_ATTR_SSID, wdev->u.client.ssid_len,
wdev->u.client.ssid))
goto nla_put_failure_locked;
break;
case NL80211_IFTYPE_ADHOC:
if (wdev->u.ibss.ssid_len &&
nla_put(msg, NL80211_ATTR_SSID, wdev->u.ibss.ssid_len,
wdev->u.ibss.ssid))
goto nla_put_failure_locked;
break;
default:
/* nothing */
break;
}
wdev_unlock(wdev);
if (rdev->ops->get_txq_stats) {
struct cfg80211_txq_stats txqstats = {};
int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
if (ret == 0 &&
!nl80211_put_txq_stats(msg, &txqstats,
NL80211_ATTR_TXQ_STATS))
goto nla_put_failure;
}
if (wdev->valid_links) {
unsigned int link_id;
struct nlattr *links = nla_nest_start(msg,
NL80211_ATTR_MLO_LINKS);
if (!links)
goto nla_put_failure;
for_each_valid_link(wdev, link_id) {
struct nlattr *link = nla_nest_start(msg, link_id + 1);
struct cfg80211_chan_def chandef = {};
int ret;
if (!link)
goto nla_put_failure;
if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
goto nla_put_failure;
if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
wdev->links[link_id].addr))
goto nla_put_failure;
ret = rdev_get_channel(rdev, wdev, link_id, &chandef);
if (ret == 0 && nl80211_send_chandef(msg, &chandef))
goto nla_put_failure;
nla_nest_end(msg, link);
}
nla_nest_end(msg, links);
}
genlmsg_end(msg, hdr);
return 0;
nla_put_failure_locked:
wdev_unlock(wdev);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
{
int wp_idx = 0;
int if_idx = 0;
int wp_start = cb->args[0];
int if_start = cb->args[1];
int filter_wiphy = -1;
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
int ret;
rtnl_lock();
if (!cb->args[2]) {
struct nl80211_dump_wiphy_state state = {
.filter_wiphy = -1,
};
ret = nl80211_dump_wiphy_parse(skb, cb, &state);
if (ret)
goto out_unlock;
filter_wiphy = state.filter_wiphy;
/*
* if filtering, set cb->args[2] to +1 since 0 is the default
* value needed to determine that parsing is necessary.
*/
if (filter_wiphy >= 0)
cb->args[2] = filter_wiphy + 1;
else
cb->args[2] = -1;
} else if (cb->args[2] > 0) {
filter_wiphy = cb->args[2] - 1;
}
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
continue;
if (wp_idx < wp_start) {
wp_idx++;
continue;
}
if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
continue;
if_idx = 0;
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
if (if_idx < if_start) {
if_idx++;
continue;
}
if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
rdev, wdev,
NL80211_CMD_NEW_INTERFACE) < 0) {
goto out;
}
if_idx++;
}
wp_idx++;
}
out:
cb->args[0] = wp_idx;
cb->args[1] = if_idx;
ret = skb->len;
out_unlock:
rtnl_unlock();
return ret;
}
static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
{
struct sk_buff *msg;
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
nlmsg_free(msg);
return -ENOBUFS;
}
return genlmsg_reply(msg, info);
}
static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
[NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
[NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
[NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
[NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
[NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
[NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
};
static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
{
struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
int flag;
*mntrflags = 0;
if (!nla)
return -EINVAL;
if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
return -EINVAL;
for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
if (flags[flag])
*mntrflags |= (1<<flag);
*mntrflags |= MONITOR_FLAG_CHANGED;
return 0;
}
static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
enum nl80211_iftype type,
struct genl_info *info,
struct vif_params *params)
{
bool change = false;
int err;
if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
if (type != NL80211_IFTYPE_MONITOR)
return -EINVAL;
err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
&params->flags);
if (err)
return err;
change = true;
}
if (params->flags & MONITOR_FLAG_ACTIVE &&
!(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
return -EOPNOTSUPP;
if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
const u8 *mumimo_groups;
u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
if (type != NL80211_IFTYPE_MONITOR)
return -EINVAL;
if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
return -EOPNOTSUPP;
mumimo_groups =
nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
/* bits 0 and 63 are reserved and must be zero */
if ((mumimo_groups[0] & BIT(0)) ||
(mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
return -EINVAL;
params->vht_mumimo_groups = mumimo_groups;
change = true;
}
if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
if (type != NL80211_IFTYPE_MONITOR)
return -EINVAL;
if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
return -EOPNOTSUPP;
params->vht_mumimo_follow_addr =
nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
change = true;
}
return change ? 1 : 0;
}
static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
struct net_device *netdev, u8 use_4addr,
enum nl80211_iftype iftype)
{
if (!use_4addr) {
if (netdev && netif_is_bridge_port(netdev))
return -EBUSY;
return 0;
}
switch (iftype) {
case NL80211_IFTYPE_AP_VLAN:
if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
return 0;
break;
case NL80211_IFTYPE_STATION:
if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
return 0;
break;
default:
break;
}
return -EOPNOTSUPP;
}
static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct vif_params params;
int err;
enum nl80211_iftype otype, ntype;
struct net_device *dev = info->user_ptr[1];
bool change = false;
memset(&params, 0, sizeof(params));
otype = ntype = dev->ieee80211_ptr->iftype;
if (info->attrs[NL80211_ATTR_IFTYPE]) {
ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
if (otype != ntype)
change = true;
}
if (info->attrs[NL80211_ATTR_MESH_ID]) {
struct wireless_dev *wdev = dev->ieee80211_ptr;
if (ntype != NL80211_IFTYPE_MESH_POINT)
return -EINVAL;
if (netif_running(dev))
return -EBUSY;
wdev_lock(wdev);
BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
IEEE80211_MAX_MESH_ID_LEN);
wdev->u.mesh.id_up_len =
nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
memcpy(wdev->u.mesh.id,
nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
wdev->u.mesh.id_up_len);
wdev_unlock(wdev);
}
if (info->attrs[NL80211_ATTR_4ADDR]) {
params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
change = true;
err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
if (err)
return err;
} else {
params.use_4addr = -1;
}
err = nl80211_parse_mon_options(rdev, ntype, info, &params);
if (err < 0)
return err;
if (err > 0)
change = true;
if (change)
err = cfg80211_change_iface(rdev, dev, ntype, &params);
else
err = 0;
if (!err && params.use_4addr != -1)
dev->ieee80211_ptr->use_4addr = params.use_4addr;
if (change && !err) {
struct wireless_dev *wdev = dev->ieee80211_ptr;
nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
}
return err;
}
static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct vif_params params;
struct wireless_dev *wdev;
struct sk_buff *msg;
int err;
enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
memset(&params, 0, sizeof(params));
if (!info->attrs[NL80211_ATTR_IFNAME])
return -EINVAL;
if (info->attrs[NL80211_ATTR_IFTYPE])
type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
if (!rdev->ops->add_virtual_intf)
return -EOPNOTSUPP;
if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
info->attrs[NL80211_ATTR_MAC]) {
nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
ETH_ALEN);
if (!is_valid_ether_addr(params.macaddr))
return -EADDRNOTAVAIL;
}
if (info->attrs[NL80211_ATTR_4ADDR]) {
params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
if (err)
return err;
}
if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
return -EOPNOTSUPP;
err = nl80211_parse_mon_options(rdev, type, info, &params);
if (err < 0)
return err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
wdev = rdev_add_virtual_intf(rdev,
nla_data(info->attrs[NL80211_ATTR_IFNAME]),
NET_NAME_USER, type, &params);
if (WARN_ON(!wdev)) {
nlmsg_free(msg);
return -EPROTO;
} else if (IS_ERR(wdev)) {
nlmsg_free(msg);
return PTR_ERR(wdev);
}
if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
wdev->owner_nlportid = info->snd_portid;
switch (type) {
case NL80211_IFTYPE_MESH_POINT:
if (!info->attrs[NL80211_ATTR_MESH_ID])
break;
wdev_lock(wdev);
BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
IEEE80211_MAX_MESH_ID_LEN);
wdev->u.mesh.id_up_len =
nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
memcpy(wdev->u.mesh.id,
nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
wdev->u.mesh.id_up_len);
wdev_unlock(wdev);
break;
case NL80211_IFTYPE_NAN:
case NL80211_IFTYPE_P2P_DEVICE:
/*
* P2P Device and NAN do not have a netdev, so don't go
* through the netdev notifier and must be added here
*/
cfg80211_init_wdev(wdev);
cfg80211_register_wdev(rdev, wdev);
break;
default:
break;
}
if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
nlmsg_free(msg);
return -ENOBUFS;
}
return genlmsg_reply(msg, info);
}
static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int ret;
/* to avoid failing a new interface creation due to pending removal */
cfg80211_destroy_ifaces(rdev);
wiphy_lock(&rdev->wiphy);
ret = _nl80211_new_interface(skb, info);
wiphy_unlock(&rdev->wiphy);
return ret;
}
static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
if (!rdev->ops->del_virtual_intf)
return -EOPNOTSUPP;
/*
* We hold RTNL, so this is safe, without RTNL opencount cannot
* reach 0, and thus the rdev cannot be deleted.
*
* We need to do it for the dev_close(), since that will call
* the netdev notifiers, and we need to acquire the mutex there
* but don't know if we get there from here or from some other
* place (e.g. "ip link set ... down").
*/
mutex_unlock(&rdev->wiphy.mtx);
/*
* If we remove a wireless device without a netdev then clear
* user_ptr[1] so that nl80211_post_doit won't dereference it
* to check if it needs to do dev_put(). Otherwise it crashes
* since the wdev has been freed, unlike with a netdev where
* we need the dev_put() for the netdev to really be freed.
*/
if (!wdev->netdev)
info->user_ptr[1] = NULL;
else
dev_close(wdev->netdev);
mutex_lock(&rdev->wiphy.mtx);
return cfg80211_remove_virtual_intf(rdev, wdev);
}
static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
u16 noack_map;
if (!info->attrs[NL80211_ATTR_NOACK_MAP])
return -EINVAL;
if (!rdev->ops->set_noack_map)
return -EOPNOTSUPP;
noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
return rdev_set_noack_map(rdev, dev, noack_map);
}
static int nl80211_validate_key_link_id(struct genl_info *info,
struct wireless_dev *wdev,
int link_id, bool pairwise)
{
if (pairwise) {
if (link_id != -1) {
GENL_SET_ERR_MSG(info,
"link ID not allowed for pairwise key");
return -EINVAL;
}
return 0;
}
if (wdev->valid_links) {
if (link_id == -1) {
GENL_SET_ERR_MSG(info,
"link ID must for MLO group key");
return -EINVAL;
}
if (!(wdev->valid_links & BIT(link_id))) {
GENL_SET_ERR_MSG(info, "invalid link ID for MLO group key");
return -EINVAL;
}
} else if (link_id != -1) {
GENL_SET_ERR_MSG(info, "link ID not allowed for non-MLO group key");
return -EINVAL;
}
return 0;
}
struct get_key_cookie {
struct sk_buff *msg;
int error;
int idx;
};
static void get_key_callback(void *c, struct key_params *params)
{
struct nlattr *key;
struct get_key_cookie *cookie = c;
if ((params->key &&
nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
params->key_len, params->key)) ||
(params->seq &&
nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
params->seq_len, params->seq)) ||
(params->cipher &&
nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
params->cipher)))
goto nla_put_failure;
key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
if (!key)
goto nla_put_failure;
if ((params->key &&
nla_put(cookie->msg, NL80211_KEY_DATA,
params->key_len, params->key)) ||
(params->seq &&
nla_put(cookie->msg, NL80211_KEY_SEQ,
params->seq_len, params->seq)) ||
(params->cipher &&
nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
params->cipher)))
goto nla_put_failure;
if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
goto nla_put_failure;
nla_nest_end(cookie->msg, key);
return;
nla_put_failure:
cookie->error = 1;
}
static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
struct net_device *dev = info->user_ptr[1];
u8 key_idx = 0;
const u8 *mac_addr = NULL;
bool pairwise;
struct get_key_cookie cookie = {
.error = 0,
};
void *hdr;
struct sk_buff *msg;
bool bigtk_support = false;
int link_id = nl80211_link_id_or_invalid(info->attrs);
struct wireless_dev *wdev = dev->ieee80211_ptr;
if (wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_BEACON_PROTECTION))
bigtk_support = true;
if ((wdev->iftype == NL80211_IFTYPE_STATION ||
wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
bigtk_support = true;
if (info->attrs[NL80211_ATTR_KEY_IDX]) {
key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
GENL_SET_ERR_MSG(info, "BIGTK not supported");
return -EINVAL;
}
}
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
pairwise = !!mac_addr;
if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
if (kt != NL80211_KEYTYPE_GROUP &&
kt != NL80211_KEYTYPE_PAIRWISE)
return -EINVAL;
pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
}
if (!rdev->ops->get_key)
return -EOPNOTSUPP;
if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
return -ENOENT;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_NEW_KEY);
if (!hdr)
goto nla_put_failure;
cookie.msg = msg;
cookie.idx = key_idx;
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
goto nla_put_failure;
if (mac_addr &&
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
goto nla_put_failure;
err = nl80211_validate_key_link_id(info, wdev, link_id, pairwise);
if (err)
goto free_msg;
err = rdev_get_key(rdev, dev, link_id, key_idx, pairwise, mac_addr,
&cookie, get_key_callback);
if (err)
goto free_msg;
if (cookie.error)
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
return err;
}
static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct key_parse key;
int err;
struct net_device *dev = info->user_ptr[1];
int link_id = nl80211_link_id_or_invalid(info->attrs);
struct wireless_dev *wdev = dev->ieee80211_ptr;
err = nl80211_parse_key(info, &key);
if (err)
return err;
if (key.idx < 0)
return -EINVAL;
/* Only support setting default key and
* Extended Key ID action NL80211_KEY_SET_TX.
*/
if (!key.def && !key.defmgmt && !key.defbeacon &&
!(key.p.mode == NL80211_KEY_SET_TX))
return -EINVAL;
wdev_lock(wdev);
if (key.def) {
if (!rdev->ops->set_default_key) {
err = -EOPNOTSUPP;
goto out;
}
err = nl80211_key_allowed(wdev);
if (err)
goto out;
err = nl80211_validate_key_link_id(info, wdev, link_id, false);
if (err)
goto out;
err = rdev_set_default_key(rdev, dev, link_id, key.idx,
key.def_uni, key.def_multi);
if (err)
goto out;
#ifdef CONFIG_CFG80211_WEXT
wdev->wext.default_key = key.idx;
#endif
} else if (key.defmgmt) {
if (key.def_uni || !key.def_multi) {
err = -EINVAL;
goto out;
}
if (!rdev->ops->set_default_mgmt_key) {
err = -EOPNOTSUPP;
goto out;
}
err = nl80211_key_allowed(wdev);
if (err)
goto out;
err = nl80211_validate_key_link_id(info, wdev, link_id, false);
if (err)
goto out;
err = rdev_set_default_mgmt_key(rdev, dev, link_id, key.idx);
if (err)
goto out;
#ifdef CONFIG_CFG80211_WEXT
wdev->wext.default_mgmt_key = key.idx;
#endif
} else if (key.defbeacon) {
if (key.def_uni || !key.def_multi) {
err = -EINVAL;
goto out;
}
if (!rdev->ops->set_default_beacon_key) {
err = -EOPNOTSUPP;
goto out;
}
err = nl80211_key_allowed(wdev);
if (err)
goto out;
err = nl80211_validate_key_link_id(info, wdev, link_id, false);
if (err)
goto out;
err = rdev_set_default_beacon_key(rdev, dev, link_id, key.idx);
if (err)
goto out;
} else if (key.p.mode == NL80211_KEY_SET_TX &&
wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_EXT_KEY_ID)) {
u8 *mac_addr = NULL;
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (!mac_addr || key.idx < 0 || key.idx > 1) {
err = -EINVAL;
goto out;
}
err = nl80211_validate_key_link_id(info, wdev, link_id, true);
if (err)
goto out;
err = rdev_add_key(rdev, dev, link_id, key.idx,
NL80211_KEYTYPE_PAIRWISE,
mac_addr, &key.p);
} else {
err = -EINVAL;
}
out:
wdev_unlock(wdev);
return err;
}
static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
struct net_device *dev = info->user_ptr[1];
struct key_parse key;
const u8 *mac_addr = NULL;
int link_id = nl80211_link_id_or_invalid(info->attrs);
struct wireless_dev *wdev = dev->ieee80211_ptr;
err = nl80211_parse_key(info, &key);
if (err)
return err;
if (!key.p.key) {
GENL_SET_ERR_MSG(info, "no key");
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (key.type == -1) {
if (mac_addr)
key.type = NL80211_KEYTYPE_PAIRWISE;
else
key.type = NL80211_KEYTYPE_GROUP;
}
/* for now */
if (key.type != NL80211_KEYTYPE_PAIRWISE &&
key.type != NL80211_KEYTYPE_GROUP) {
GENL_SET_ERR_MSG(info, "key type not pairwise or group");
return -EINVAL;
}
if (key.type == NL80211_KEYTYPE_GROUP &&
info->attrs[NL80211_ATTR_VLAN_ID])
key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
if (!rdev->ops->add_key)
return -EOPNOTSUPP;
if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
key.type == NL80211_KEYTYPE_PAIRWISE,
mac_addr)) {
GENL_SET_ERR_MSG(info, "key setting validation failed");
return -EINVAL;
}
wdev_lock(wdev);
err = nl80211_key_allowed(wdev);
if (err)
GENL_SET_ERR_MSG(info, "key not allowed");
if (!err)
err = nl80211_validate_key_link_id(info, wdev, link_id,
key.type == NL80211_KEYTYPE_PAIRWISE);
if (!err) {
err = rdev_add_key(rdev, dev, link_id, key.idx,
key.type == NL80211_KEYTYPE_PAIRWISE,
mac_addr, &key.p);
if (err)
GENL_SET_ERR_MSG(info, "key addition failed");
}
wdev_unlock(wdev);
return err;
}
static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
struct net_device *dev = info->user_ptr[1];
u8 *mac_addr = NULL;
struct key_parse key;
int link_id = nl80211_link_id_or_invalid(info->attrs);
struct wireless_dev *wdev = dev->ieee80211_ptr;
err = nl80211_parse_key(info, &key);
if (err)
return err;
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (key.type == -1) {
if (mac_addr)
key.type = NL80211_KEYTYPE_PAIRWISE;
else
key.type = NL80211_KEYTYPE_GROUP;
}
/* for now */
if (key.type != NL80211_KEYTYPE_PAIRWISE &&
key.type != NL80211_KEYTYPE_GROUP)
return -EINVAL;
if (!cfg80211_valid_key_idx(rdev, key.idx,
key.type == NL80211_KEYTYPE_PAIRWISE))
return -EINVAL;
if (!rdev->ops->del_key)
return -EOPNOTSUPP;
wdev_lock(wdev);
err = nl80211_key_allowed(wdev);
if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
!(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
err = -ENOENT;
if (!err)
err = nl80211_validate_key_link_id(info, wdev, link_id,
key.type == NL80211_KEYTYPE_PAIRWISE);
if (!err)
err = rdev_del_key(rdev, dev, link_id, key.idx,
key.type == NL80211_KEYTYPE_PAIRWISE,
mac_addr);
#ifdef CONFIG_CFG80211_WEXT
if (!err) {
if (key.idx == wdev->wext.default_key)
wdev->wext.default_key = -1;
else if (key.idx == wdev->wext.default_mgmt_key)
wdev->wext.default_mgmt_key = -1;
}
#endif
wdev_unlock(wdev);
return err;
}
/* This function returns an error or the number of nested attributes */
static int validate_acl_mac_addrs(struct nlattr *nl_attr)
{
struct nlattr *attr;
int n_entries = 0, tmp;
nla_for_each_nested(attr, nl_attr, tmp) {
if (nla_len(attr) != ETH_ALEN)
return -EINVAL;
n_entries++;
}
return n_entries;
}
/*
* This function parses ACL information and allocates memory for ACL data.
* On successful return, the calling function is responsible to free the
* ACL buffer returned by this function.
*/
static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
struct genl_info *info)
{
enum nl80211_acl_policy acl_policy;
struct nlattr *attr;
struct cfg80211_acl_data *acl;
int i = 0, n_entries, tmp;
if (!wiphy->max_acl_mac_addrs)
return ERR_PTR(-EOPNOTSUPP);
if (!info->attrs[NL80211_ATTR_ACL_POLICY])
return ERR_PTR(-EINVAL);
acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
return ERR_PTR(-EINVAL);
if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
return ERR_PTR(-EINVAL);
n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
if (n_entries < 0)
return ERR_PTR(n_entries);
if (n_entries > wiphy->max_acl_mac_addrs)
return ERR_PTR(-ENOTSUPP);
acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
if (!acl)
return ERR_PTR(-ENOMEM);
acl->n_acl_entries = n_entries;
nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
i++;
}
acl->acl_policy = acl_policy;
return acl;
}
static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct cfg80211_acl_data *acl;
int err;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EOPNOTSUPP;
if (!dev->ieee80211_ptr->links[0].ap.beacon_interval)
return -EINVAL;
acl = parse_acl_data(&rdev->wiphy, info);
if (IS_ERR(acl))
return PTR_ERR(acl);
err = rdev_set_mac_acl(rdev, dev, acl);
kfree(acl);
return err;
}
static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
u8 *rates, u8 rates_len)
{
u8 i;
u32 mask = 0;
for (i = 0; i < rates_len; i++) {
int rate = (rates[i] & 0x7f) * 5;
int ridx;
for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
struct ieee80211_rate *srate =
&sband->bitrates[ridx];
if (rate == srate->bitrate) {
mask |= 1 << ridx;
break;
}
}
if (ridx == sband->n_bitrates)
return 0; /* rate not found */
}
return mask;
}
static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
u8 *rates, u8 rates_len,
u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
{
u8 i;
memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
for (i = 0; i < rates_len; i++) {
int ridx, rbit;
ridx = rates[i] / 8;
rbit = BIT(rates[i] % 8);
/* check validity */
if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
return false;
/* check availability */
ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
mcs[ridx] |= rbit;
else
return false;
}
return true;
}
static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
{
u16 mcs_mask = 0;
switch (vht_mcs_map) {
case IEEE80211_VHT_MCS_NOT_SUPPORTED:
break;
case IEEE80211_VHT_MCS_SUPPORT_0_7:
mcs_mask = 0x00FF;
break;
case IEEE80211_VHT_MCS_SUPPORT_0_8:
mcs_mask = 0x01FF;
break;
case IEEE80211_VHT_MCS_SUPPORT_0_9:
mcs_mask = 0x03FF;
break;
default:
break;
}
return mcs_mask;
}
static void vht_build_mcs_mask(u16 vht_mcs_map,
u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
{
u8 nss;
for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
vht_mcs_map >>= 2;
}
}
static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
struct nl80211_txrate_vht *txrate,
u16 mcs[NL80211_VHT_NSS_MAX])
{
u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
u8 i;
if (!sband->vht_cap.vht_supported)
return false;
memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
/* Build vht_mcs_mask from VHT capabilities */
vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
mcs[i] = txrate->mcs[i];
else
return false;
}
return true;
}
static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
{
switch (he_mcs_map) {
case IEEE80211_HE_MCS_NOT_SUPPORTED:
return 0;
case IEEE80211_HE_MCS_SUPPORT_0_7:
return 0x00FF;
case IEEE80211_HE_MCS_SUPPORT_0_9:
return 0x03FF;
case IEEE80211_HE_MCS_SUPPORT_0_11:
return 0xFFF;
default:
break;
}
return 0;
}
static void he_build_mcs_mask(u16 he_mcs_map,
u16 he_mcs_mask[NL80211_HE_NSS_MAX])
{
u8 nss;
for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
he_mcs_map >>= 2;
}
}
static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id,
const struct ieee80211_sta_he_cap *he_cap)
{
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_chan_def *chandef;
__le16 tx_mcs;
chandef = wdev_chandef(wdev, link_id);
if (!chandef) {
/*
* This is probably broken, but we never maintained
* a chandef in these cases, so it always was.
*/
return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
}
switch (chandef->width) {
case NL80211_CHAN_WIDTH_80P80:
tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
break;
case NL80211_CHAN_WIDTH_160:
tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
break;
default:
tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
break;
}
return le16_to_cpu(tx_mcs);
}
static bool he_set_mcs_mask(struct genl_info *info,
struct wireless_dev *wdev,
struct ieee80211_supported_band *sband,
struct nl80211_txrate_he *txrate,
u16 mcs[NL80211_HE_NSS_MAX],
unsigned int link_id)
{
const struct ieee80211_sta_he_cap *he_cap;
u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
u16 tx_mcs_map = 0;
u8 i;
he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
if (!he_cap)
return false;
memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
/* Build he_mcs_mask from HE capabilities */
he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
mcs[i] = txrate->mcs[i];
else
return false;
}
return true;
}
static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
struct nlattr *attrs[],
enum nl80211_attrs attr,
struct cfg80211_bitrate_mask *mask,
struct net_device *dev,
bool default_all_enabled,
unsigned int link_id)
{
struct nlattr *tb[NL80211_TXRATE_MAX + 1];
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = dev->ieee80211_ptr;
int rem, i;
struct nlattr *tx_rates;
struct ieee80211_supported_band *sband;
u16 vht_tx_mcs_map, he_tx_mcs_map;
memset(mask, 0, sizeof(*mask));
/* Default to all rates enabled */
for (i = 0; i < NUM_NL80211_BANDS; i++) {
const struct ieee80211_sta_he_cap *he_cap;
if (!default_all_enabled)
break;
sband = rdev->wiphy.bands[i];
if (!sband)
continue;
mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
memcpy(mask->control[i].ht_mcs,
sband->ht_cap.mcs.rx_mask,
sizeof(mask->control[i].ht_mcs));
if (sband->vht_cap.vht_supported) {
vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
}
he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
if (!he_cap)
continue;
he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
mask->control[i].he_gi = 0xFF;
mask->control[i].he_ltf = 0xFF;
}
/* if no rates are given set it back to the defaults */
if (!attrs[attr])
goto out;
/* The nested attribute uses enum nl80211_band as the index. This maps
* directly to the enum nl80211_band values used in cfg80211.
*/
BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
nla_for_each_nested(tx_rates, attrs[attr], rem) {
enum nl80211_band band = nla_type(tx_rates);
int err;
if (band < 0 || band >= NUM_NL80211_BANDS)
return -EINVAL;
sband = rdev->wiphy.bands[band];
if (sband == NULL)
return -EINVAL;
err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
tx_rates,
nl80211_txattr_policy,
info->extack);
if (err)
return err;
if (tb[NL80211_TXRATE_LEGACY]) {
mask->control[band].legacy = rateset_to_mask(
sband,
nla_data(tb[NL80211_TXRATE_LEGACY]),
nla_len(tb[NL80211_TXRATE_LEGACY]));
if ((mask->control[band].legacy == 0) &&
nla_len(tb[NL80211_TXRATE_LEGACY]))
return -EINVAL;
}
if (tb[NL80211_TXRATE_HT]) {
if (!ht_rateset_to_mask(
sband,
nla_data(tb[NL80211_TXRATE_HT]),
nla_len(tb[NL80211_TXRATE_HT]),
mask->control[band].ht_mcs))
return -EINVAL;
}
if (tb[NL80211_TXRATE_VHT]) {
if (!vht_set_mcs_mask(
sband,
nla_data(tb[NL80211_TXRATE_VHT]),
mask->control[band].vht_mcs))
return -EINVAL;
}
if (tb[NL80211_TXRATE_GI]) {
mask->control[band].gi =
nla_get_u8(tb[NL80211_TXRATE_GI]);
if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
return -EINVAL;
}
if (tb[NL80211_TXRATE_HE] &&
!he_set_mcs_mask(info, wdev, sband,
nla_data(tb[NL80211_TXRATE_HE]),
mask->control[band].he_mcs,
link_id))
return -EINVAL;
if (tb[NL80211_TXRATE_HE_GI])
mask->control[band].he_gi =
nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
if (tb[NL80211_TXRATE_HE_LTF])
mask->control[band].he_ltf =
nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
if (mask->control[band].legacy == 0) {
/* don't allow empty legacy rates if HT, VHT or HE
* are not even supported.
*/
if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
rdev->wiphy.bands[band]->vht_cap.vht_supported ||
ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
return -EINVAL;
for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
if (mask->control[band].ht_mcs[i])
goto out;
for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
if (mask->control[band].vht_mcs[i])
goto out;
for (i = 0; i < NL80211_HE_NSS_MAX; i++)
if (mask->control[band].he_mcs[i])
goto out;
/* legacy and mcs rates may not be both empty */
return -EINVAL;
}
}
out:
return 0;
}
static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
enum nl80211_band band,
struct cfg80211_bitrate_mask *beacon_rate)
{
u32 count_ht, count_vht, count_he, i;
u32 rate = beacon_rate->control[band].legacy;
/* Allow only one rate */
if (hweight32(rate) > 1)
return -EINVAL;
count_ht = 0;
for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
return -EINVAL;
} else if (beacon_rate->control[band].ht_mcs[i]) {
count_ht++;
if (count_ht > 1)
return -EINVAL;
}
if (count_ht && rate)
return -EINVAL;
}
count_vht = 0;
for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
return -EINVAL;
} else if (beacon_rate->control[band].vht_mcs[i]) {
count_vht++;
if (count_vht > 1)
return -EINVAL;
}
if (count_vht && rate)
return -EINVAL;
}
count_he = 0;
for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
return -EINVAL;
} else if (beacon_rate->control[band].he_mcs[i]) {
count_he++;
if (count_he > 1)
return -EINVAL;
}
if (count_he && rate)
return -EINVAL;
}
if ((count_ht && count_vht && count_he) ||
(!rate && !count_ht && !count_vht && !count_he))
return -EINVAL;
if (rate &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
return -EINVAL;
if (count_ht &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_BEACON_RATE_HT))
return -EINVAL;
if (count_vht &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_BEACON_RATE_VHT))
return -EINVAL;
if (count_he &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_BEACON_RATE_HE))
return -EINVAL;
return 0;
}
static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
struct net_device *dev,
struct nlattr *attrs,
struct cfg80211_mbssid_config *config,
u8 num_elems)
{
struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
if (!wiphy->mbssid_max_interfaces)
return -EOPNOTSUPP;
if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL,
NULL) ||
!tb[NL80211_MBSSID_CONFIG_ATTR_INDEX])
return -EINVAL;
config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]);
if (config->ema) {
if (!wiphy->ema_max_profile_periodicity)
return -EOPNOTSUPP;
if (num_elems > wiphy->ema_max_profile_periodicity)
return -EINVAL;
}
config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]);
if (config->index >= wiphy->mbssid_max_interfaces ||
(!config->index && !num_elems))
return -EINVAL;
if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) {
u32 tx_ifindex =
nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]);
if ((!config->index && tx_ifindex != dev->ifindex) ||
(config->index && tx_ifindex == dev->ifindex))
return -EINVAL;
if (tx_ifindex != dev->ifindex) {
struct net_device *tx_netdev =
dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
tx_netdev->ieee80211_ptr->wiphy != wiphy ||
tx_netdev->ieee80211_ptr->iftype !=
NL80211_IFTYPE_AP) {
dev_put(tx_netdev);
return -EINVAL;
}
config->tx_wdev = tx_netdev->ieee80211_ptr;
} else {
config->tx_wdev = dev->ieee80211_ptr;
}
} else if (!config->index) {
config->tx_wdev = dev->ieee80211_ptr;
} else {
return -EINVAL;
}
return 0;
}
static struct cfg80211_mbssid_elems *
nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
{
struct nlattr *nl_elems;
struct cfg80211_mbssid_elems *elems;
int rem_elems;
u8 i = 0, num_elems = 0;
if (!wiphy->mbssid_max_interfaces)
return ERR_PTR(-EINVAL);
nla_for_each_nested(nl_elems, attrs, rem_elems) {
if (num_elems >= 255)
return ERR_PTR(-EINVAL);
num_elems++;
}
elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
if (!elems)
return ERR_PTR(-ENOMEM);
elems->cnt = num_elems;
nla_for_each_nested(nl_elems, attrs, rem_elems) {
elems->elem[i].data = nla_data(nl_elems);
elems->elem[i].len = nla_len(nl_elems);
i++;
}
return elems;
}
static struct cfg80211_rnr_elems *
nl80211_parse_rnr_elems(struct wiphy *wiphy, struct nlattr *attrs,
struct netlink_ext_ack *extack)
{
struct nlattr *nl_elems;
struct cfg80211_rnr_elems *elems;
int rem_elems;
u8 i = 0, num_elems = 0;
nla_for_each_nested(nl_elems, attrs, rem_elems) {
int ret;
ret = validate_ie_attr(nl_elems, extack);
if (ret)
return ERR_PTR(ret);
num_elems++;
}
elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
if (!elems)
return ERR_PTR(-ENOMEM);
elems->cnt = num_elems;
nla_for_each_nested(nl_elems, attrs, rem_elems) {
elems->elem[i].data = nla_data(nl_elems);
elems->elem[i].len = nla_len(nl_elems);
i++;
}
return elems;
}
static int nl80211_parse_he_bss_color(struct nlattr *attrs,
struct cfg80211_he_bss_color *he_bss_color)
{
struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
int err;
err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
he_bss_color_policy, NULL);
if (err)
return err;
if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
return -EINVAL;
he_bss_color->color =
nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
he_bss_color->enabled =
!nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
he_bss_color->partial =
nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
return 0;
}
static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
struct nlattr *attrs[],
struct cfg80211_beacon_data *bcn,
struct netlink_ext_ack *extack)
{
bool haveinfo = false;
int err;
memset(bcn, 0, sizeof(*bcn));
bcn->link_id = nl80211_link_id(attrs);
if (attrs[NL80211_ATTR_BEACON_HEAD]) {
bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
if (!bcn->head_len)
return -EINVAL;
haveinfo = true;
}
if (attrs[NL80211_ATTR_BEACON_TAIL]) {
bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
haveinfo = true;
}
if (!haveinfo)
return -EINVAL;
if (attrs[NL80211_ATTR_IE]) {
bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
}
if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
bcn->proberesp_ies =
nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
bcn->proberesp_ies_len =
nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
}
if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
bcn->assocresp_ies =
nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
bcn->assocresp_ies_len =
nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
}
if (attrs[NL80211_ATTR_PROBE_RESP]) {
bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
}
if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
err = nla_parse_nested_deprecated(tb,
NL80211_FTM_RESP_ATTR_MAX,
attrs[NL80211_ATTR_FTM_RESPONDER],
NULL, NULL);
if (err)
return err;
if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
bcn->ftm_responder = 1;
else
return -EOPNOTSUPP;
if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
}
if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
}
} else {
bcn->ftm_responder = -1;
}
if (attrs[NL80211_ATTR_HE_BSS_COLOR]) {
err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR],
&bcn->he_bss_color);
if (err)
return err;
bcn->he_bss_color_valid = true;
}
if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
struct cfg80211_mbssid_elems *mbssid =
nl80211_parse_mbssid_elems(&rdev->wiphy,
attrs[NL80211_ATTR_MBSSID_ELEMS]);
if (IS_ERR(mbssid))
return PTR_ERR(mbssid);
bcn->mbssid_ies = mbssid;
if (bcn->mbssid_ies && attrs[NL80211_ATTR_EMA_RNR_ELEMS]) {
struct cfg80211_rnr_elems *rnr =
nl80211_parse_rnr_elems(&rdev->wiphy,
attrs[NL80211_ATTR_EMA_RNR_ELEMS],
extack);
if (IS_ERR(rnr))
return PTR_ERR(rnr);
if (rnr && rnr->cnt < bcn->mbssid_ies->cnt)
return -EINVAL;
bcn->rnr_ies = rnr;
}
}
return 0;
}
static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
struct ieee80211_he_obss_pd *he_obss_pd)
{
struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
int err;
err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
he_obss_pd_policy, NULL);
if (err)
return err;
if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
return -EINVAL;
he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
he_obss_pd->min_offset =
nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
he_obss_pd->max_offset =
nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
he_obss_pd->non_srg_max_offset =
nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
if (he_obss_pd->min_offset > he_obss_pd->max_offset)
return -EINVAL;
if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
memcpy(he_obss_pd->bss_color_bitmap,
nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
sizeof(he_obss_pd->bss_color_bitmap));
if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
memcpy(he_obss_pd->partial_bssid_bitmap,
nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
sizeof(he_obss_pd->partial_bssid_bitmap));
he_obss_pd->enable = true;
return 0;
}
static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
struct nlattr *attrs,
struct cfg80211_ap_settings *params)
{
struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
int ret;
struct cfg80211_fils_discovery *fd = &params->fils_discovery;
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_FILS_DISCOVERY))
return -EINVAL;
ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
NULL, NULL);
if (ret)
return ret;
if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
!tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
return -EINVAL;
fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
return 0;
}
static int
nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
struct nlattr *attrs,
struct cfg80211_ap_settings *params)
{
struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
int ret;
struct cfg80211_unsol_bcast_probe_resp *presp =
&params->unsol_bcast_probe_resp;
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
return -EINVAL;
ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
attrs, NULL, NULL);
if (ret)
return ret;
if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
return -EINVAL;
presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
return 0;
}
static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
const struct element *rates)
{
int i;
if (!rates)
return;
for (i = 0; i < rates->datalen; i++) {
if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
params->ht_required = true;
if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
params->vht_required = true;
if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
params->he_required = true;
if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
params->sae_h2e_required = true;
}
}
/*
* Since the nl80211 API didn't include, from the beginning, attributes about
* HT/VHT requirements/capabilities, we parse them out of the IEs for the
* benefit of drivers that rebuild IEs in the firmware.
*/
static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
{
const struct cfg80211_beacon_data *bcn = &params->beacon;
size_t ies_len = bcn->tail_len;
const u8 *ies = bcn->tail;
const struct element *rates;
const struct element *cap;
rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len);
nl80211_check_ap_rate_selectors(params, rates);
rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
nl80211_check_ap_rate_selectors(params, rates);
cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len);
if (cap && cap->datalen >= sizeof(*params->ht_cap))
params->ht_cap = (void *)cap->data;
cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
if (cap && cap->datalen >= sizeof(*params->vht_cap))
params->vht_cap = (void *)cap->data;
cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
if (cap && cap->datalen >= sizeof(*params->he_cap) + 1)
params->he_cap = (void *)(cap->data + 1);
cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
params->he_oper = (void *)(cap->data + 1);
cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
if (cap) {
if (!cap->datalen)
return -EINVAL;
params->eht_cap = (void *)(cap->data + 1);
if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
(const u8 *)params->eht_cap,
cap->datalen - 1, true))
return -EINVAL;
}
cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
if (cap) {
if (!cap->datalen)
return -EINVAL;
params->eht_oper = (void *)(cap->data + 1);
if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
cap->datalen - 1))
return -EINVAL;
}
return 0;
}
static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
struct cfg80211_ap_settings *params)
{
struct wireless_dev *wdev;
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
if (wdev->iftype != NL80211_IFTYPE_AP &&
wdev->iftype != NL80211_IFTYPE_P2P_GO)
continue;
if (!wdev->u.ap.preset_chandef.chan)
continue;
params->chandef = wdev->u.ap.preset_chandef;
return true;
}
return false;
}
static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
enum nl80211_auth_type auth_type,
enum nl80211_commands cmd)
{
if (auth_type > NL80211_AUTHTYPE_MAX)
return false;
switch (cmd) {
case NL80211_CMD_AUTHENTICATE:
if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
auth_type == NL80211_AUTHTYPE_SAE)
return false;
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_FILS_STA) &&
(auth_type == NL80211_AUTHTYPE_FILS_SK ||
auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
auth_type == NL80211_AUTHTYPE_FILS_PK))
return false;
return true;
case NL80211_CMD_CONNECT:
if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
auth_type == NL80211_AUTHTYPE_SAE)
return false;
/* FILS with SK PFS or PK not supported yet */
if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
auth_type == NL80211_AUTHTYPE_FILS_PK)
return false;
if (!wiphy_ext_feature_isset(
&rdev->wiphy,
NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
auth_type == NL80211_AUTHTYPE_FILS_SK)
return false;
return true;
case NL80211_CMD_START_AP:
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
auth_type == NL80211_AUTHTYPE_SAE)
return false;
/* FILS not supported yet */
if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
auth_type == NL80211_AUTHTYPE_FILS_PK)
return false;
return true;
default:
return false;
}
}
static void nl80211_send_ap_started(struct wireless_dev *wdev,
unsigned int link_id)
{
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_START_AP);
if (!hdr)
goto out;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD) ||
(wdev->u.ap.ssid_len &&
nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
wdev->u.ap.ssid)) ||
(wdev->valid_links &&
nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
goto out;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
NL80211_MCGRP_MLME, GFP_KERNEL);
return;
out:
nlmsg_free(msg);
}
static int nl80211_validate_ap_phy_operation(struct cfg80211_ap_settings *params)
{
struct ieee80211_channel *channel = params->chandef.chan;
if ((params->he_cap || params->he_oper) &&
(channel->flags & IEEE80211_CHAN_NO_HE))
return -EOPNOTSUPP;
if ((params->eht_cap || params->eht_oper) &&
(channel->flags & IEEE80211_CHAN_NO_EHT))
return -EOPNOTSUPP;
return 0;
}
static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
unsigned int link_id = nl80211_link_id(info->attrs);
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_ap_settings *params;
int err;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EOPNOTSUPP;
if (!rdev->ops->start_ap)
return -EOPNOTSUPP;
if (wdev->links[link_id].ap.beacon_interval)
return -EALREADY;
/* these are required for START_AP */
if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
!info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
!info->attrs[NL80211_ATTR_BEACON_HEAD])
return -EINVAL;
params = kzalloc(sizeof(*params), GFP_KERNEL);
if (!params)
return -ENOMEM;
err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon,
info->extack);
if (err)
goto out;
params->beacon_interval =
nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
params->dtim_period =
nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
params->beacon_interval);
if (err)
goto out;
/*
* In theory, some of these attributes should be required here
* but since they were not used when the command was originally
* added, keep them optional for old user space programs to let
* them continue to work with drivers that do not need the
* additional information -- drivers must check!
*/
if (info->attrs[NL80211_ATTR_SSID]) {
params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
params->ssid_len =
nla_len(info->attrs[NL80211_ATTR_SSID]);
if (params->ssid_len == 0) {
err = -EINVAL;
goto out;
}
if (wdev->u.ap.ssid_len &&
(wdev->u.ap.ssid_len != params->ssid_len ||
memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) {
/* require identical SSID for MLO */
err = -EINVAL;
goto out;
}
} else if (wdev->valid_links) {
/* require SSID for MLO */
err = -EINVAL;
goto out;
}
if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
params->hidden_ssid = nla_get_u32(
info->attrs[NL80211_ATTR_HIDDEN_SSID]);
params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
params->auth_type = nla_get_u32(
info->attrs[NL80211_ATTR_AUTH_TYPE]);
if (!nl80211_valid_auth_type(rdev, params->auth_type,
NL80211_CMD_START_AP)) {
err = -EINVAL;
goto out;
}
} else
params->auth_type = NL80211_AUTHTYPE_AUTOMATIC;
err = nl80211_crypto_settings(rdev, info, &params->crypto,
NL80211_MAX_NR_CIPHER_SUITES);
if (err)
goto out;
if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) {
err = -EOPNOTSUPP;
goto out;
}
params->inactivity_timeout = nla_get_u16(
info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
}
if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
err = -EINVAL;
goto out;
}
params->p2p_ctwindow =
nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
if (params->p2p_ctwindow != 0 &&
!(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) {
err = -EINVAL;
goto out;
}
}
if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
u8 tmp;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
err = -EINVAL;
goto out;
}
tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
params->p2p_opp_ps = tmp;
if (params->p2p_opp_ps != 0 &&
!(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) {
err = -EINVAL;
goto out;
}
}
if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
err = nl80211_parse_chandef(rdev, info, &params->chandef);
if (err)
goto out;
} else if (wdev->valid_links) {
/* with MLD need to specify the channel configuration */
err = -EINVAL;
goto out;
} else if (wdev->u.ap.preset_chandef.chan) {
params->chandef = wdev->u.ap.preset_chandef;
} else if (!nl80211_get_ap_channel(rdev, params)) {
err = -EINVAL;
goto out;
}
if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
err = nl80211_parse_punct_bitmap(rdev, info,
&params->chandef,
&params->punct_bitmap);
if (err)
goto out;
}
if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params->chandef,
wdev->iftype)) {
err = -EINVAL;
goto out;
}
wdev_lock(wdev);
if (info->attrs[NL80211_ATTR_TX_RATES]) {
err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
NL80211_ATTR_TX_RATES,
&params->beacon_rate,
dev, false, link_id);
if (err)
goto out_unlock;
err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
&params->beacon_rate);
if (err)
goto out_unlock;
}
if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
params->smps_mode =
nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
switch (params->smps_mode) {
case NL80211_SMPS_OFF:
break;
case NL80211_SMPS_STATIC:
if (!(rdev->wiphy.features &
NL80211_FEATURE_STATIC_SMPS)) {
err = -EINVAL;
goto out_unlock;
}
break;
case NL80211_SMPS_DYNAMIC:
if (!(rdev->wiphy.features &
NL80211_FEATURE_DYNAMIC_SMPS)) {
err = -EINVAL;
goto out_unlock;
}
break;
default:
err = -EINVAL;
goto out_unlock;
}
} else {
params->smps_mode = NL80211_SMPS_OFF;
}
params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
err = -EOPNOTSUPP;
goto out_unlock;
}
if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
params->acl = parse_acl_data(&rdev->wiphy, info);
if (IS_ERR(params->acl)) {
err = PTR_ERR(params->acl);
params->acl = NULL;
goto out_unlock;
}
}
params->twt_responder =
nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
err = nl80211_parse_he_obss_pd(
info->attrs[NL80211_ATTR_HE_OBSS_PD],
&params->he_obss_pd);
if (err)
goto out_unlock;
}
if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
err = nl80211_parse_fils_discovery(rdev,
info->attrs[NL80211_ATTR_FILS_DISCOVERY],
params);
if (err)
goto out_unlock;
}
if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
err = nl80211_parse_unsol_bcast_probe_resp(
rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
params);
if (err)
goto out_unlock;
}
if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
err = nl80211_parse_mbssid_config(&rdev->wiphy, dev,
info->attrs[NL80211_ATTR_MBSSID_CONFIG],
&params->mbssid_config,
params->beacon.mbssid_ies ?
params->beacon.mbssid_ies->cnt :
0);
if (err)
goto out_unlock;
}
if (!params->mbssid_config.ema && params->beacon.rnr_ies) {
err = -EINVAL;
goto out_unlock;
}
err = nl80211_calculate_ap_params(params);
if (err)
goto out_unlock;
err = nl80211_validate_ap_phy_operation(params);
if (err)
goto out_unlock;
if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
params->flags = nla_get_u32(
info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]);
else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
if (wdev->conn_owner_nlportid &&
info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
wdev->conn_owner_nlportid != info->snd_portid) {
err = -EINVAL;
goto out_unlock;
}
/* FIXME: validate MLO/link-id against driver capabilities */
err = rdev_start_ap(rdev, dev, params);
if (!err) {
wdev->links[link_id].ap.beacon_interval = params->beacon_interval;
wdev->links[link_id].ap.chandef = params->chandef;
wdev->u.ap.ssid_len = params->ssid_len;
memcpy(wdev->u.ap.ssid, params->ssid,
params->ssid_len);
if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
wdev->conn_owner_nlportid = info->snd_portid;
nl80211_send_ap_started(wdev, link_id);
}
out_unlock:
wdev_unlock(wdev);
out:
kfree(params->acl);
kfree(params->beacon.mbssid_ies);
if (params->mbssid_config.tx_wdev &&
params->mbssid_config.tx_wdev->netdev &&
params->mbssid_config.tx_wdev->netdev != dev)
dev_put(params->mbssid_config.tx_wdev->netdev);
kfree(params->beacon.rnr_ies);
kfree(params);
return err;
}
static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
unsigned int link_id = nl80211_link_id(info->attrs);
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_beacon_data params;
int err;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EOPNOTSUPP;
if (!rdev->ops->change_beacon)
return -EOPNOTSUPP;
if (!wdev->links[link_id].ap.beacon_interval)
return -EINVAL;
err = nl80211_parse_beacon(rdev, info->attrs, &params, info->extack);
if (err)
goto out;
wdev_lock(wdev);
err = rdev_change_beacon(rdev, dev, &params);
wdev_unlock(wdev);
out:
kfree(params.mbssid_ies);
kfree(params.rnr_ies);
return err;
}
static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
unsigned int link_id = nl80211_link_id(info->attrs);
struct net_device *dev = info->user_ptr[1];
return cfg80211_stop_ap(rdev, dev, link_id, false);
}
static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
[NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
[NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
[NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
[NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
[NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
[NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
};
static int parse_station_flags(struct genl_info *info,
enum nl80211_iftype iftype,
struct station_parameters *params)
{
struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
struct nlattr *nla;
int flag;
/*
* Try parsing the new attribute first so userspace
* can specify both for older kernels.
*/
nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
if (nla) {
struct nl80211_sta_flag_update *sta_flags;
sta_flags = nla_data(nla);
params->sta_flags_mask = sta_flags->mask;
params->sta_flags_set = sta_flags->set;
params->sta_flags_set &= params->sta_flags_mask;
if ((params->sta_flags_mask |
params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
return -EINVAL;
return 0;
}
/* if present, parse the old attribute */
nla = info->attrs[NL80211_ATTR_STA_FLAGS];
if (!nla)
return 0;
if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
return -EINVAL;
/*
* Only allow certain flags for interface types so that
* other attributes are silently ignored. Remember that
* this is backward compatibility code with old userspace
* and shouldn't be hit in other cases anyway.
*/
switch (iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_P2P_GO:
params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
BIT(NL80211_STA_FLAG_WME) |
BIT(NL80211_STA_FLAG_MFP);
break;
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_STATION:
params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
BIT(NL80211_STA_FLAG_TDLS_PEER);
break;
case NL80211_IFTYPE_MESH_POINT:
params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
BIT(NL80211_STA_FLAG_MFP) |
BIT(NL80211_STA_FLAG_AUTHORIZED);
break;
default:
return -EINVAL;
}
for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
if (flags[flag]) {
params->sta_flags_set |= (1<<flag);
/* no longer support new API additions in old API */
if (flag > NL80211_STA_FLAG_MAX_OLD_API)
return -EINVAL;
}
}
return 0;
}
bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
{
struct nlattr *rate;
u32 bitrate;
u16 bitrate_compat;
enum nl80211_rate_info rate_flg;
rate = nla_nest_start_noflag(msg, attr);
if (!rate)
return false;
/* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
bitrate = cfg80211_calculate_bitrate(info);
/* report 16-bit bitrate only if we can */
bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
if (bitrate > 0 &&
nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
return false;
if (bitrate_compat > 0 &&
nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
return false;
switch (info->bw) {
case RATE_INFO_BW_1:
rate_flg = NL80211_RATE_INFO_1_MHZ_WIDTH;
break;
case RATE_INFO_BW_2:
rate_flg = NL80211_RATE_INFO_2_MHZ_WIDTH;
break;
case RATE_INFO_BW_4:
rate_flg = NL80211_RATE_INFO_4_MHZ_WIDTH;
break;
case RATE_INFO_BW_5:
rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
break;
case RATE_INFO_BW_8:
rate_flg = NL80211_RATE_INFO_8_MHZ_WIDTH;
break;
case RATE_INFO_BW_10:
rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
break;
case RATE_INFO_BW_16:
rate_flg = NL80211_RATE_INFO_16_MHZ_WIDTH;
break;
default:
WARN_ON(1);
fallthrough;
case RATE_INFO_BW_20:
rate_flg = 0;
break;
case RATE_INFO_BW_40:
rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
break;
case RATE_INFO_BW_80:
rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
break;
case RATE_INFO_BW_160:
rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
break;
case RATE_INFO_BW_HE_RU:
rate_flg = 0;
WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
break;
case RATE_INFO_BW_320:
rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH;
break;
case RATE_INFO_BW_EHT_RU:
rate_flg = 0;
WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS));
break;
}
if (rate_flg && nla_put_flag(msg, rate_flg))
return false;
if (info->flags & RATE_INFO_FLAGS_MCS) {
if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
return false;
if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
return false;
} else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
return false;
if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
return false;
if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
return false;
} else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
return false;
if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
return false;
if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
return false;
if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
return false;
if (info->bw == RATE_INFO_BW_HE_RU &&
nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
info->he_ru_alloc))
return false;
} else if (info->flags & RATE_INFO_FLAGS_S1G_MCS) {
if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_MCS, info->mcs))
return false;
if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_NSS, info->nss))
return false;
if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
return false;
} else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) {
if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs))
return false;
if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss))
return false;
if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi))
return false;
if (info->bw == RATE_INFO_BW_EHT_RU &&
nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC,
info->eht_ru_alloc))
return false;
}
nla_nest_end(msg, rate);
return true;
}
static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
int id)
{
void *attr;
int i = 0;
if (!mask)
return true;
attr = nla_nest_start_noflag(msg, id);
if (!attr)
return false;
for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
if (!(mask & BIT(i)))
continue;
if (nla_put_u8(msg, i, signal[i]))
return false;
}
nla_nest_end(msg, attr);
return true;
}
static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
u32 seq, int flags,
struct cfg80211_registered_device *rdev,
struct net_device *dev,
const u8 *mac_addr, struct station_info *sinfo)
{
void *hdr;
struct nlattr *sinfoattr, *bss_param;
hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
if (!hdr) {
cfg80211_sinfo_release_content(sinfo);
return -1;
}
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
goto nla_put_failure;
sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
if (!sinfoattr)
goto nla_put_failure;
#define PUT_SINFO(attr, memb, type) do { \
BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
sinfo->memb)) \
goto nla_put_failure; \
} while (0)
#define PUT_SINFO_U64(attr, memb) do { \
if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
sinfo->memb, NL80211_STA_INFO_PAD)) \
goto nla_put_failure; \
} while (0)
PUT_SINFO(CONNECTED_TIME, connected_time, u32);
PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
(u32)sinfo->rx_bytes))
goto nla_put_failure;
if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
(u32)sinfo->tx_bytes))
goto nla_put_failure;
PUT_SINFO_U64(RX_BYTES64, rx_bytes);
PUT_SINFO_U64(TX_BYTES64, tx_bytes);
PUT_SINFO(LLID, llid, u16);
PUT_SINFO(PLID, plid, u16);
PUT_SINFO(PLINK_STATE, plink_state, u8);
PUT_SINFO_U64(RX_DURATION, rx_duration);
PUT_SINFO_U64(TX_DURATION, tx_duration);
if (wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
switch (rdev->wiphy.signal_type) {
case CFG80211_SIGNAL_TYPE_MBM:
PUT_SINFO(SIGNAL, signal, u8);
PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
break;
default:
break;
}
if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
if (!nl80211_put_signal(msg, sinfo->chains,
sinfo->chain_signal,
NL80211_STA_INFO_CHAIN_SIGNAL))
goto nla_put_failure;
}
if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
if (!nl80211_put_signal(msg, sinfo->chains,
sinfo->chain_signal_avg,
NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
goto nla_put_failure;
}
if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
NL80211_STA_INFO_TX_BITRATE))
goto nla_put_failure;
}
if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
NL80211_STA_INFO_RX_BITRATE))
goto nla_put_failure;
}
PUT_SINFO(RX_PACKETS, rx_packets, u32);
PUT_SINFO(TX_PACKETS, tx_packets, u32);
PUT_SINFO(TX_RETRIES, tx_retries, u32);
PUT_SINFO(TX_FAILED, tx_failed, u32);
PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
PUT_SINFO(LOCAL_PM, local_pm, u32);
PUT_SINFO(PEER_PM, peer_pm, u32);
PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
bss_param = nla_nest_start_noflag(msg,
NL80211_STA_INFO_BSS_PARAM);
if (!bss_param)
goto nla_put_failure;
if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
sinfo->bss_param.dtim_period) ||
nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
sinfo->bss_param.beacon_interval))
goto nla_put_failure;
nla_nest_end(msg, bss_param);
}
if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
sizeof(struct nl80211_sta_flag_update),
&sinfo->sta_flags))
goto nla_put_failure;
PUT_SINFO_U64(T_OFFSET, t_offset);
PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
PUT_SINFO_U64(BEACON_RX, rx_beacon);
PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
if (wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
}
#undef PUT_SINFO
#undef PUT_SINFO_U64
if (sinfo->pertid) {
struct nlattr *tidsattr;
int tid;
tidsattr = nla_nest_start_noflag(msg,
NL80211_STA_INFO_TID_STATS);
if (!tidsattr)
goto nla_put_failure;
for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
struct cfg80211_tid_stats *tidstats;
struct nlattr *tidattr;
tidstats = &sinfo->pertid[tid];
if (!tidstats->filled)
continue;
tidattr = nla_nest_start_noflag(msg, tid + 1);
if (!tidattr)
goto nla_put_failure;
#define PUT_TIDVAL_U64(attr, memb) do { \
if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
tidstats->memb, NL80211_TID_STATS_PAD)) \
goto nla_put_failure; \
} while (0)
PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
#undef PUT_TIDVAL_U64
if ((tidstats->filled &
BIT(NL80211_TID_STATS_TXQ_STATS)) &&
!nl80211_put_txq_stats(msg, &tidstats->txq_stats,
NL80211_TID_STATS_TXQ_STATS))
goto nla_put_failure;
nla_nest_end(msg, tidattr);
}
nla_nest_end(msg, tidsattr);
}
nla_nest_end(msg, sinfoattr);
if (sinfo->assoc_req_ies_len &&
nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
sinfo->assoc_req_ies))
goto nla_put_failure;
if (sinfo->assoc_resp_ies_len &&
nla_put(msg, NL80211_ATTR_RESP_IE, sinfo->assoc_resp_ies_len,
sinfo->assoc_resp_ies))
goto nla_put_failure;
if (sinfo->mlo_params_valid) {
if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
sinfo->assoc_link_id))
goto nla_put_failure;
if (!is_zero_ether_addr(sinfo->mld_addr) &&
nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
sinfo->mld_addr))
goto nla_put_failure;
}
cfg80211_sinfo_release_content(sinfo);
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
cfg80211_sinfo_release_content(sinfo);
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int nl80211_dump_station(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct station_info sinfo;
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
u8 mac_addr[ETH_ALEN];
int sta_idx = cb->args[2];
int err;
err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
if (err)
return err;
/* nl80211_prepare_wdev_dump acquired it in the successful case */
__acquire(&rdev->wiphy.mtx);
if (!wdev->netdev) {
err = -EINVAL;
goto out_err;
}
if (!rdev->ops->dump_station) {
err = -EOPNOTSUPP;
goto out_err;
}
while (1) {
memset(&sinfo, 0, sizeof(sinfo));
err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
mac_addr, &sinfo);
if (err == -ENOENT)
break;
if (err)
goto out_err;
if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
rdev, wdev->netdev, mac_addr,
&sinfo) < 0)
goto out;
sta_idx++;
}
out:
cb->args[2] = sta_idx;
err = skb->len;
out_err:
wiphy_unlock(&rdev->wiphy);
return err;
}
static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct station_info sinfo;
struct sk_buff *msg;
u8 *mac_addr = NULL;
int err;
memset(&sinfo, 0, sizeof(sinfo));
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (!rdev->ops->get_station)
return -EOPNOTSUPP;
err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
if (err)
return err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
cfg80211_sinfo_release_content(&sinfo);
return -ENOMEM;
}
if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
info->snd_portid, info->snd_seq, 0,
rdev, dev, mac_addr, &sinfo) < 0) {
nlmsg_free(msg);
return -ENOBUFS;
}
return genlmsg_reply(msg, info);
}
int cfg80211_check_station_change(struct wiphy *wiphy,
struct station_parameters *params,
enum cfg80211_station_type statype)
{
if (params->listen_interval != -1 &&
statype != CFG80211_STA_AP_CLIENT_UNASSOC)
return -EINVAL;
if (params->support_p2p_ps != -1 &&
statype != CFG80211_STA_AP_CLIENT_UNASSOC)
return -EINVAL;
if (params->aid &&
!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
statype != CFG80211_STA_AP_CLIENT_UNASSOC)
return -EINVAL;
/* When you run into this, adjust the code below for the new flag */
BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
switch (statype) {
case CFG80211_STA_MESH_PEER_KERNEL:
case CFG80211_STA_MESH_PEER_USER:
/*
* No ignoring the TDLS flag here -- the userspace mesh
* code doesn't have the bug of including TDLS in the
* mask everywhere.
*/
if (params->sta_flags_mask &
~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
BIT(NL80211_STA_FLAG_MFP) |
BIT(NL80211_STA_FLAG_AUTHORIZED)))
return -EINVAL;
break;
case CFG80211_STA_TDLS_PEER_SETUP:
case CFG80211_STA_TDLS_PEER_ACTIVE:
if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
return -EINVAL;
/* ignore since it can't change */
params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
break;
default:
/* disallow mesh-specific things */
if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
return -EINVAL;
if (params->local_pm)
return -EINVAL;
if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
return -EINVAL;
}
if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
/* TDLS can't be set, ... */
if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
return -EINVAL;
/*
* ... but don't bother the driver with it. This works around
* a hostapd/wpa_supplicant issue -- it always includes the
* TLDS_PEER flag in the mask even for AP mode.
*/
params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
}
if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
/* reject other things that can't change */
if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
return -EINVAL;
if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
return -EINVAL;
if (params->link_sta_params.supported_rates)
return -EINVAL;
if (params->ext_capab || params->link_sta_params.ht_capa ||
params->link_sta_params.vht_capa ||
params->link_sta_params.he_capa ||
params->link_sta_params.eht_capa)
return -EINVAL;
}
if (statype != CFG80211_STA_AP_CLIENT &&
statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
if (params->vlan)
return -EINVAL;
}
switch (statype) {
case CFG80211_STA_AP_MLME_CLIENT:
/* Use this only for authorizing/unauthorizing a station */
if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
return -EOPNOTSUPP;
break;
case CFG80211_STA_AP_CLIENT:
case CFG80211_STA_AP_CLIENT_UNASSOC:
/* accept only the listed bits */
if (params->sta_flags_mask &
~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
BIT(NL80211_STA_FLAG_AUTHENTICATED) |
BIT(NL80211_STA_FLAG_ASSOCIATED) |
BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
BIT(NL80211_STA_FLAG_WME) |
BIT(NL80211_STA_FLAG_MFP)))
return -EINVAL;
/* but authenticated/associated only if driver handles it */
if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
params->sta_flags_mask &
(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
BIT(NL80211_STA_FLAG_ASSOCIATED)))
return -EINVAL;
break;
case CFG80211_STA_IBSS:
case CFG80211_STA_AP_STA:
/* reject any changes other than AUTHORIZED */
if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
return -EINVAL;
break;
case CFG80211_STA_TDLS_PEER_SETUP:
/* reject any changes other than AUTHORIZED or WME */
if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
BIT(NL80211_STA_FLAG_WME)))
return -EINVAL;
/* force (at least) rates when authorizing */
if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
!params->link_sta_params.supported_rates)
return -EINVAL;
break;
case CFG80211_STA_TDLS_PEER_ACTIVE:
/* reject any changes */
return -EINVAL;
case CFG80211_STA_MESH_PEER_KERNEL:
if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
return -EINVAL;
break;
case CFG80211_STA_MESH_PEER_USER:
if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
params->plink_action != NL80211_PLINK_ACTION_BLOCK)
return -EINVAL;
break;
}
/*
* Older kernel versions ignored this attribute entirely, so don't
* reject attempts to update it but mark it as unused instead so the
* driver won't look at the data.
*/
if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
statype != CFG80211_STA_TDLS_PEER_SETUP)
params->link_sta_params.opmode_notif_used = false;
return 0;
}
EXPORT_SYMBOL(cfg80211_check_station_change);
/*
* Get vlan interface making sure it is running and on the right wiphy.
*/
static struct net_device *get_vlan(struct genl_info *info,
struct cfg80211_registered_device *rdev)
{
struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
struct net_device *v;
int ret;
if (!vlanattr)
return NULL;
v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
if (!v)
return ERR_PTR(-ENODEV);
if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
ret = -EINVAL;
goto error;
}
if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
ret = -EINVAL;
goto error;
}
if (!netif_running(v)) {
ret = -ENETDOWN;
goto error;
}
return v;
error:
dev_put(v);
return ERR_PTR(ret);
}
static int nl80211_parse_sta_wme(struct genl_info *info,
struct station_parameters *params)
{
struct nlattr *tb[NL80211_STA_WME_MAX + 1];
struct nlattr *nla;
int err;
/* parse WME attributes if present */
if (!info->attrs[NL80211_ATTR_STA_WME])
return 0;
nla = info->attrs[NL80211_ATTR_STA_WME];
err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
nl80211_sta_wme_policy,
info->extack);
if (err)
return err;
if (tb[NL80211_STA_WME_UAPSD_QUEUES])
params->uapsd_queues = nla_get_u8(
tb[NL80211_STA_WME_UAPSD_QUEUES]);
if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
return -EINVAL;
if (tb[NL80211_STA_WME_MAX_SP])
params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
return -EINVAL;
params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
return 0;
}
static int nl80211_parse_sta_channel_info(struct genl_info *info,
struct station_parameters *params)
{
if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
params->supported_channels =
nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
params->supported_channels_len =
nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
/*
* Need to include at least one (first channel, number of
* channels) tuple for each subband (checked in policy),
* and must have proper tuples for the rest of the data as well.
*/
if (params->supported_channels_len % 2)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
params->supported_oper_classes =
nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
params->supported_oper_classes_len =
nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
}
return 0;
}
static int nl80211_set_station_tdls(struct genl_info *info,
struct station_parameters *params)
{
int err;
/* Dummy STA entry gets updated once the peer capabilities are known */
if (info->attrs[NL80211_ATTR_PEER_AID])
params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
params->link_sta_params.ht_capa =
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
params->link_sta_params.vht_capa =
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
params->link_sta_params.he_capa =
nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
params->link_sta_params.he_capa_len =
nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
params->link_sta_params.eht_capa =
nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
params->link_sta_params.eht_capa_len =
nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa,
(const u8 *)params->link_sta_params.eht_capa,
params->link_sta_params.eht_capa_len,
false))
return -EINVAL;
}
}
err = nl80211_parse_sta_channel_info(info, params);
if (err)
return err;
return nl80211_parse_sta_wme(info, params);
}
static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
struct sta_txpwr *txpwr,
bool *txpwr_set)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int idx;
if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
if (!rdev->ops->set_tx_power ||
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_STA_TX_PWR))
return -EOPNOTSUPP;
idx = NL80211_ATTR_STA_TX_POWER_SETTING;
txpwr->type = nla_get_u8(info->attrs[idx]);
if (txpwr->type == NL80211_TX_POWER_LIMITED) {
idx = NL80211_ATTR_STA_TX_POWER;
if (info->attrs[idx])
txpwr->power = nla_get_s16(info->attrs[idx]);
else
return -EINVAL;
}
*txpwr_set = true;
} else {
*txpwr_set = false;
}
return 0;
}
static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct station_parameters params;
u8 *mac_addr;
int err;
memset(&params, 0, sizeof(params));
if (!rdev->ops->change_station)
return -EOPNOTSUPP;
/*
* AID and listen_interval properties can be set only for unassociated
* station. Include these parameters here and will check them in
* cfg80211_check_station_change().
*/
if (info->attrs[NL80211_ATTR_STA_AID])
params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
if (info->attrs[NL80211_ATTR_VLAN_ID])
params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
params.listen_interval =
nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
else
params.listen_interval = -1;
if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
params.support_p2p_ps =
nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
else
params.support_p2p_ps = -1;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
params.link_sta_params.link_id =
nl80211_link_id_or_invalid(info->attrs);
if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
/* If MLD_ADDR attribute is set then this is an MLD station
* and the MLD_ADDR attribute holds the MLD address and the
* MAC attribute holds for the LINK address.
* In that case, the link_id is also expected to be valid.
*/
if (params.link_sta_params.link_id < 0)
return -EINVAL;
mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
params.link_sta_params.mld_mac = mac_addr;
params.link_sta_params.link_mac =
nla_data(info->attrs[NL80211_ATTR_MAC]);
if (!is_valid_ether_addr(params.link_sta_params.link_mac))
return -EINVAL;
} else {
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
}
if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
params.link_sta_params.supported_rates =
nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
params.link_sta_params.supported_rates_len =
nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
}
if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
params.capability =
nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
}
if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
params.ext_capab =
nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
params.ext_capab_len =
nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
}
if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
return -EINVAL;
if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
params.plink_action =
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
params.plink_state =
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
params.peer_aid = nla_get_u16(
info->attrs[NL80211_ATTR_MESH_PEER_AID]);
params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
}
if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
params.local_pm = nla_get_u32(
info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
params.link_sta_params.opmode_notif_used = true;
params.link_sta_params.opmode_notif =
nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
}
if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
params.link_sta_params.he_6ghz_capa =
nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
params.airtime_weight =
nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
if (params.airtime_weight &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
return -EOPNOTSUPP;
err = nl80211_parse_sta_txpower_setting(info,
&params.link_sta_params.txpwr,
&params.link_sta_params.txpwr_set);
if (err)
return err;
/* Include parameters for TDLS peer (will check later) */
err = nl80211_set_station_tdls(info, &params);
if (err)
return err;
params.vlan = get_vlan(info, rdev);
if (IS_ERR(params.vlan))
return PTR_ERR(params.vlan);
switch (dev->ieee80211_ptr->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_MESH_POINT:
break;
default:
err = -EOPNOTSUPP;
goto out_put_vlan;
}
/* driver will call cfg80211_check_station_change() */
wdev_lock(dev->ieee80211_ptr);
err = rdev_change_station(rdev, dev, mac_addr, &params);
wdev_unlock(dev->ieee80211_ptr);
out_put_vlan:
dev_put(params.vlan);
return err;
}
static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct station_parameters params;
u8 *mac_addr = NULL;
u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
BIT(NL80211_STA_FLAG_ASSOCIATED);
memset(&params, 0, sizeof(params));
if (!rdev->ops->add_station)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_STA_AID] &&
!info->attrs[NL80211_ATTR_PEER_AID])
return -EINVAL;
params.link_sta_params.link_id =
nl80211_link_id_or_invalid(info->attrs);
if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
params.link_sta_params.mld_mac = mac_addr;
params.link_sta_params.link_mac =
nla_data(info->attrs[NL80211_ATTR_MAC]);
if (!is_valid_ether_addr(params.link_sta_params.link_mac))
return -EINVAL;
} else {
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
}
params.link_sta_params.supported_rates =
nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
params.link_sta_params.supported_rates_len =
nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
params.listen_interval =
nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
if (info->attrs[NL80211_ATTR_VLAN_ID])
params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
params.support_p2p_ps =
nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
} else {
/*
* if not specified, assume it's supported for P2P GO interface,
* and is NOT supported for AP interface
*/
params.support_p2p_ps =
dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
}
if (info->attrs[NL80211_ATTR_PEER_AID])
params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
else
params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
params.capability =
nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
}
if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
params.ext_capab =
nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
params.ext_capab_len =
nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
}
if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
params.link_sta_params.ht_capa =
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
params.link_sta_params.vht_capa =
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
params.link_sta_params.he_capa =
nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
params.link_sta_params.he_capa_len =
nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
params.link_sta_params.eht_capa =
nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
params.link_sta_params.eht_capa_len =
nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa,
(const u8 *)params.link_sta_params.eht_capa,
params.link_sta_params.eht_capa_len,
false))
return -EINVAL;
}
}
if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
params.link_sta_params.he_6ghz_capa =
nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
params.link_sta_params.opmode_notif_used = true;
params.link_sta_params.opmode_notif =
nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
}
if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
params.plink_action =
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
params.airtime_weight =
nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
if (params.airtime_weight &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
return -EOPNOTSUPP;
err = nl80211_parse_sta_txpower_setting(info,
&params.link_sta_params.txpwr,
&params.link_sta_params.txpwr_set);
if (err)
return err;
err = nl80211_parse_sta_channel_info(info, &params);
if (err)
return err;
err = nl80211_parse_sta_wme(info, &params);
if (err)
return err;
if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
return -EINVAL;
/* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
* as userspace might just pass through the capabilities from the IEs
* directly, rather than enforcing this restriction and returning an
* error in this case.
*/
if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
params.link_sta_params.ht_capa = NULL;
params.link_sta_params.vht_capa = NULL;
/* HE and EHT require WME */
if (params.link_sta_params.he_capa_len ||
params.link_sta_params.he_6ghz_capa ||
params.link_sta_params.eht_capa_len)
return -EINVAL;
}
/* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
if (params.link_sta_params.he_6ghz_capa &&
(params.link_sta_params.ht_capa || params.link_sta_params.vht_capa))
return -EINVAL;
/* When you run into this, adjust the code below for the new flag */
BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
switch (dev->ieee80211_ptr->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_P2P_GO:
/* ignore WME attributes if iface/sta is not capable */
if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
/* TDLS peers cannot be added */
if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
info->attrs[NL80211_ATTR_PEER_AID])
return -EINVAL;
/* but don't bother the driver with it */
params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
/* allow authenticated/associated only if driver handles it */
if (!(rdev->wiphy.features &
NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
params.sta_flags_mask & auth_assoc)
return -EINVAL;
/* Older userspace, or userspace wanting to be compatible with
* !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
* and assoc flags in the mask, but assumes the station will be
* added as associated anyway since this was the required driver
* behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
* introduced.
* In order to not bother drivers with this quirk in the API
* set the flags in both the mask and set for new stations in
* this case.
*/
if (!(params.sta_flags_mask & auth_assoc)) {
params.sta_flags_mask |= auth_assoc;
params.sta_flags_set |= auth_assoc;
}
/* must be last in here for error handling */
params.vlan = get_vlan(info, rdev);
if (IS_ERR(params.vlan))
return PTR_ERR(params.vlan);
break;
case NL80211_IFTYPE_MESH_POINT:
/* ignore uAPSD data */
params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
/* associated is disallowed */
if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
return -EINVAL;
/* TDLS peers cannot be added */
if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
info->attrs[NL80211_ATTR_PEER_AID])
return -EINVAL;
break;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
/* ignore uAPSD data */
params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
/* these are disallowed */
if (params.sta_flags_mask &
(BIT(NL80211_STA_FLAG_ASSOCIATED) |
BIT(NL80211_STA_FLAG_AUTHENTICATED)))
return -EINVAL;
/* Only TDLS peers can be added */
if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
return -EINVAL;
/* Can only add if TDLS ... */
if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
return -EOPNOTSUPP;
/* ... with external setup is supported */
if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
return -EOPNOTSUPP;
/*
* Older wpa_supplicant versions always mark the TDLS peer
* as authorized, but it shouldn't yet be.
*/
params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
break;
default:
return -EOPNOTSUPP;
}
/* be aware of params.vlan when changing code here */
wdev_lock(dev->ieee80211_ptr);
if (wdev->valid_links) {
if (params.link_sta_params.link_id < 0) {
err = -EINVAL;
goto out;
}
if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) {
err = -ENOLINK;
goto out;
}
} else {
if (params.link_sta_params.link_id >= 0) {
err = -EINVAL;
goto out;
}
}
err = rdev_add_station(rdev, dev, mac_addr, &params);
out:
wdev_unlock(dev->ieee80211_ptr);
dev_put(params.vlan);
return err;
}
static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct station_del_parameters params;
int ret;
memset(&params, 0, sizeof(params));
if (info->attrs[NL80211_ATTR_MAC])
params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
switch (dev->ieee80211_ptr->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_MESH_POINT:
case NL80211_IFTYPE_P2P_GO:
/* always accept these */
break;
case NL80211_IFTYPE_ADHOC:
/* conditionally accept */
if (wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_DEL_IBSS_STA))
break;
return -EINVAL;
default:
return -EINVAL;
}
if (!rdev->ops->del_station)
return -EOPNOTSUPP;
if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
params.subtype =
nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
return -EINVAL;
} else {
/* Default to Deauthentication frame */
params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
}
if (info->attrs[NL80211_ATTR_REASON_CODE]) {
params.reason_code =
nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
if (params.reason_code == 0)
return -EINVAL; /* 0 is reserved */
} else {
/* Default to reason code 2 */
params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
}
wdev_lock(dev->ieee80211_ptr);
ret = rdev_del_station(rdev, dev, &params);
wdev_unlock(dev->ieee80211_ptr);
return ret;
}
static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
int flags, struct net_device *dev,
u8 *dst, u8 *next_hop,
struct mpath_info *pinfo)
{
void *hdr;
struct nlattr *pinfoattr;
hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
if (!hdr)
return -1;
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
goto nla_put_failure;
pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
if (!pinfoattr)
goto nla_put_failure;
if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
pinfo->frame_qlen))
goto nla_put_failure;
if (((pinfo->filled & MPATH_INFO_SN) &&
nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
((pinfo->filled & MPATH_INFO_METRIC) &&
nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
pinfo->metric)) ||
((pinfo->filled & MPATH_INFO_EXPTIME) &&
nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
pinfo->exptime)) ||
((pinfo->filled & MPATH_INFO_FLAGS) &&
nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
pinfo->flags)) ||
((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
pinfo->discovery_timeout)) ||
((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
pinfo->discovery_retries)) ||
((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
pinfo->hop_count)) ||
((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
pinfo->path_change_count)))
goto nla_put_failure;
nla_nest_end(msg, pinfoattr);
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int nl80211_dump_mpath(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct mpath_info pinfo;
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
u8 dst[ETH_ALEN];
u8 next_hop[ETH_ALEN];
int path_idx = cb->args[2];
int err;
err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
if (err)
return err;
/* nl80211_prepare_wdev_dump acquired it in the successful case */
__acquire(&rdev->wiphy.mtx);
if (!rdev->ops->dump_mpath) {
err = -EOPNOTSUPP;
goto out_err;
}
if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
err = -EOPNOTSUPP;
goto out_err;
}
while (1) {
err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
next_hop, &pinfo);
if (err == -ENOENT)
break;
if (err)
goto out_err;
if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
wdev->netdev, dst, next_hop,
&pinfo) < 0)
goto out;
path_idx++;
}
out:
cb->args[2] = path_idx;
err = skb->len;
out_err:
wiphy_unlock(&rdev->wiphy);
return err;
}
static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
struct net_device *dev = info->user_ptr[1];
struct mpath_info pinfo;
struct sk_buff *msg;
u8 *dst = NULL;
u8 next_hop[ETH_ALEN];
memset(&pinfo, 0, sizeof(pinfo));
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (!rdev->ops->get_mpath)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
if (err)
return err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
dev, dst, next_hop, &pinfo) < 0) {
nlmsg_free(msg);
return -ENOBUFS;
}
return genlmsg_reply(msg, info);
}
static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
u8 *dst = NULL;
u8 *next_hop = NULL;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
return -EINVAL;
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
if (!rdev->ops->change_mpath)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
return rdev_change_mpath(rdev, dev, dst, next_hop);
}
static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
u8 *dst = NULL;
u8 *next_hop = NULL;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
return -EINVAL;
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
if (!rdev->ops->add_mpath)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
return rdev_add_mpath(rdev, dev, dst, next_hop);
}
static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
u8 *dst = NULL;
if (info->attrs[NL80211_ATTR_MAC])
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (!rdev->ops->del_mpath)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
return rdev_del_mpath(rdev, dev, dst);
}
static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
struct net_device *dev = info->user_ptr[1];
struct mpath_info pinfo;
struct sk_buff *msg;
u8 *dst = NULL;
u8 mpp[ETH_ALEN];
memset(&pinfo, 0, sizeof(pinfo));
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (!rdev->ops->get_mpp)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
if (err)
return err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
dev, dst, mpp, &pinfo) < 0) {
nlmsg_free(msg);
return -ENOBUFS;
}
return genlmsg_reply(msg, info);
}
static int nl80211_dump_mpp(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct mpath_info pinfo;
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
u8 dst[ETH_ALEN];
u8 mpp[ETH_ALEN];
int path_idx = cb->args[2];
int err;
err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
if (err)
return err;
/* nl80211_prepare_wdev_dump acquired it in the successful case */
__acquire(&rdev->wiphy.mtx);
if (!rdev->ops->dump_mpp) {
err = -EOPNOTSUPP;
goto out_err;
}
if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
err = -EOPNOTSUPP;
goto out_err;
}
while (1) {
err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
mpp, &pinfo);
if (err == -ENOENT)
break;
if (err)
goto out_err;
if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
wdev->netdev, dst, mpp,
&pinfo) < 0)
goto out;
path_idx++;
}
out:
cb->args[2] = path_idx;
err = skb->len;
out_err:
wiphy_unlock(&rdev->wiphy);
return err;
}
static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct bss_parameters params;
int err;
memset(&params, 0, sizeof(params));
params.link_id = nl80211_link_id_or_invalid(info->attrs);
/* default to not changing parameters */
params.use_cts_prot = -1;
params.use_short_preamble = -1;
params.use_short_slot_time = -1;
params.ap_isolate = -1;
params.ht_opmode = -1;
params.p2p_ctwindow = -1;
params.p2p_opp_ps = -1;
if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
params.use_cts_prot =
nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
params.use_short_preamble =
nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
params.use_short_slot_time =
nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
params.basic_rates =
nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
params.basic_rates_len =
nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
}
if (info->attrs[NL80211_ATTR_AP_ISOLATE])
params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
params.ht_opmode =
nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EINVAL;
params.p2p_ctwindow =
nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
if (params.p2p_ctwindow != 0 &&
!(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
u8 tmp;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EINVAL;
tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
params.p2p_opp_ps = tmp;
if (params.p2p_opp_ps &&
!(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
return -EINVAL;
}
if (!rdev->ops->change_bss)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EOPNOTSUPP;
wdev_lock(wdev);
err = rdev_change_bss(rdev, dev, &params);
wdev_unlock(wdev);
return err;
}
static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
{
char *data = NULL;
bool is_indoor;
enum nl80211_user_reg_hint_type user_reg_hint_type;
u32 owner_nlportid;
/*
* You should only get this when cfg80211 hasn't yet initialized
* completely when built-in to the kernel right between the time
* window between nl80211_init() and regulatory_init(), if that is
* even possible.
*/
if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
return -EINPROGRESS;
if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
user_reg_hint_type =
nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
else
user_reg_hint_type = NL80211_USER_REG_HINT_USER;
switch (user_reg_hint_type) {
case NL80211_USER_REG_HINT_USER:
case NL80211_USER_REG_HINT_CELL_BASE:
if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
return -EINVAL;
data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
return regulatory_hint_user(data, user_reg_hint_type);
case NL80211_USER_REG_HINT_INDOOR:
if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
owner_nlportid = info->snd_portid;
is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
} else {
owner_nlportid = 0;
is_indoor = true;
}
return regulatory_hint_indoor(is_indoor, owner_nlportid);
default:
return -EINVAL;
}
}
static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
{
return reg_reload_regdb();
}
static int nl80211_get_mesh_config(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct mesh_config cur_params;
int err = 0;
void *hdr;
struct nlattr *pinfoattr;
struct sk_buff *msg;
if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
if (!rdev->ops->get_mesh_config)
return -EOPNOTSUPP;
wdev_lock(wdev);
/* If not connected, get default parameters */
if (!wdev->u.mesh.id_len)
memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
else
err = rdev_get_mesh_config(rdev, dev, &cur_params);
wdev_unlock(wdev);
if (err)
return err;
/* Draw up a netlink message to send back */
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_GET_MESH_CONFIG);
if (!hdr)
goto out;
pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
if (!pinfoattr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
cur_params.dot11MeshRetryTimeout) ||
nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
cur_params.dot11MeshConfirmTimeout) ||
nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
cur_params.dot11MeshHoldingTimeout) ||
nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
cur_params.dot11MeshMaxPeerLinks) ||
nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
cur_params.dot11MeshMaxRetries) ||
nla_put_u8(msg, NL80211_MESHCONF_TTL,
cur_params.dot11MeshTTL) ||
nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
cur_params.element_ttl) ||
nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
cur_params.auto_open_plinks) ||
nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
cur_params.dot11MeshHWMPmaxPREQretries) ||
nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
cur_params.path_refresh_time) ||
nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
cur_params.min_discovery_timeout) ||
nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
cur_params.dot11MeshHWMPactivePathTimeout) ||
nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
cur_params.dot11MeshHWMPpreqMinInterval) ||
nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
cur_params.dot11MeshHWMPperrMinInterval) ||
nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
cur_params.dot11MeshHWMPRootMode) ||
nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
cur_params.dot11MeshHWMPRannInterval) ||
nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
cur_params.dot11MeshGateAnnouncementProtocol) ||
nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
cur_params.dot11MeshForwarding) ||
nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
cur_params.rssi_threshold) ||
nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
cur_params.ht_opmode) ||
nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
cur_params.dot11MeshHWMProotInterval) ||
nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
cur_params.dot11MeshHWMPconfirmationInterval) ||
nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
cur_params.power_mode) ||
nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
cur_params.dot11MeshAwakeWindowDuration) ||
nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
cur_params.plink_timeout) ||
nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
cur_params.dot11MeshConnectedToMeshGate) ||
nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
cur_params.dot11MeshNolearn) ||
nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
cur_params.dot11MeshConnectedToAuthServer))
goto nla_put_failure;
nla_nest_end(msg, pinfoattr);
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
out:
nlmsg_free(msg);
return -ENOBUFS;
}
static const struct nla_policy
nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
[NL80211_MESHCONF_RETRY_TIMEOUT] =
NLA_POLICY_RANGE(NLA_U16, 1, 255),
[NL80211_MESHCONF_CONFIRM_TIMEOUT] =
NLA_POLICY_RANGE(NLA_U16, 1, 255),
[NL80211_MESHCONF_HOLDING_TIMEOUT] =
NLA_POLICY_RANGE(NLA_U16, 1, 255),
[NL80211_MESHCONF_MAX_PEER_LINKS] =
NLA_POLICY_RANGE(NLA_U16, 0, 255),
[NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
[NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
[NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
[NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
[NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
NLA_POLICY_RANGE(NLA_U32, 1, 255),
[NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
[NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
[NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
[NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
[NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
NLA_POLICY_MIN(NLA_U16, 1),
[NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
NLA_POLICY_MIN(NLA_U16, 1),
[NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
NLA_POLICY_MIN(NLA_U16, 1),
[NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
[NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
NLA_POLICY_MIN(NLA_U16, 1),
[NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
[NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
[NL80211_MESHCONF_RSSI_THRESHOLD] =
NLA_POLICY_RANGE(NLA_S32, -255, 0),
[NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
[NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
[NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
NLA_POLICY_MIN(NLA_U16, 1),
[NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
NLA_POLICY_MIN(NLA_U16, 1),
[NL80211_MESHCONF_POWER_MODE] =
NLA_POLICY_RANGE(NLA_U32,
NL80211_MESH_POWER_ACTIVE,
NL80211_MESH_POWER_MAX),
[NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
[NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
[NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
[NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
[NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
};
static const struct nla_policy
nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
[NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
[NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
[NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
[NL80211_MESH_SETUP_IE] =
NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
IEEE80211_MAX_DATA_LEN),
[NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
};
static int nl80211_parse_mesh_config(struct genl_info *info,
struct mesh_config *cfg,
u32 *mask_out)
{
struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
u32 mask = 0;
u16 ht_opmode;
#define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn) \
do { \
if (tb[attr]) { \
cfg->param = fn(tb[attr]); \
mask |= BIT((attr) - 1); \
} \
} while (0)
if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
return -EINVAL;
if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
return -EINVAL;
/* This makes sure that there aren't more than 32 mesh config
* parameters (otherwise our bitfield scheme would not work.) */
BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
/* Fill in the params struct */
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
NL80211_MESHCONF_CONFIRM_TIMEOUT,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
NL80211_MESHCONF_HOLDING_TIMEOUT,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
NL80211_MESHCONF_MAX_PEER_LINKS,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
NL80211_MESHCONF_TTL, nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
NL80211_MESHCONF_AUTO_OPEN_PLINKS,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
mask,
NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
nla_get_u32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
NL80211_MESHCONF_PATH_REFRESH_TIME,
nla_get_u32);
if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
(cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
return -EINVAL;
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
mask,
NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
nla_get_u32);
if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
(cfg->dot11MeshHWMPactivePathTimeout < 1 ||
cfg->dot11MeshHWMPactivePathTimeout > 65535))
return -EINVAL;
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
dot11MeshHWMPnetDiameterTraversalTime, mask,
NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
NL80211_MESHCONF_HWMP_RANN_INTERVAL,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
NL80211_MESHCONF_FORWARDING, nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
NL80211_MESHCONF_RSSI_THRESHOLD,
nla_get_s32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
NL80211_MESHCONF_CONNECTED_TO_GATE,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
NL80211_MESHCONF_CONNECTED_TO_AS,
nla_get_u8);
/*
* Check HT operation mode based on
* IEEE 802.11-2016 9.4.2.57 HT Operation element.
*/
if (tb[NL80211_MESHCONF_HT_OPMODE]) {
ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
return -EINVAL;
/* NON_HT_STA bit is reserved, but some programs set it */
ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
cfg->ht_opmode = ht_opmode;
mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
}
FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
dot11MeshHWMPactivePathToRootTimeout, mask,
NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
nla_get_u32);
if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
(cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
return -EINVAL;
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
mask,
NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
NL80211_MESHCONF_POWER_MODE, nla_get_u32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
NL80211_MESHCONF_NOLEARN, nla_get_u8);
if (mask_out)
*mask_out = mask;
return 0;
#undef FILL_IN_MESH_PARAM_IF_SET
}
static int nl80211_parse_mesh_setup(struct genl_info *info,
struct mesh_setup *setup)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
if (!info->attrs[NL80211_ATTR_MESH_SETUP])
return -EINVAL;
if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
return -EINVAL;
if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
setup->sync_method =
(nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
IEEE80211_SYNC_METHOD_VENDOR :
IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
setup->path_sel_proto =
(nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
IEEE80211_PATH_PROTOCOL_VENDOR :
IEEE80211_PATH_PROTOCOL_HWMP;
if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
setup->path_metric =
(nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
IEEE80211_PATH_METRIC_VENDOR :
IEEE80211_PATH_METRIC_AIRTIME;
if (tb[NL80211_MESH_SETUP_IE]) {
struct nlattr *ieattr =
tb[NL80211_MESH_SETUP_IE];
setup->ie = nla_data(ieattr);
setup->ie_len = nla_len(ieattr);
}
if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
!(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
return -EINVAL;
setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
if (setup->is_secure)
setup->user_mpm = true;
if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
if (!setup->user_mpm)
return -EINVAL;
setup->auth_id =
nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
}
return 0;
}
static int nl80211_update_mesh_config(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct mesh_config cfg = {};
u32 mask;
int err;
if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
if (!rdev->ops->update_mesh_config)
return -EOPNOTSUPP;
err = nl80211_parse_mesh_config(info, &cfg, &mask);
if (err)
return err;
wdev_lock(wdev);
if (!wdev->u.mesh.id_len)
err = -ENOLINK;
if (!err)
err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
wdev_unlock(wdev);
return err;
}
static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
struct sk_buff *msg)
{
struct nlattr *nl_reg_rules;
unsigned int i;
if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
(regdom->dfs_region &&
nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
goto nla_put_failure;
nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
if (!nl_reg_rules)
goto nla_put_failure;
for (i = 0; i < regdom->n_reg_rules; i++) {
struct nlattr *nl_reg_rule;
const struct ieee80211_reg_rule *reg_rule;
const struct ieee80211_freq_range *freq_range;
const struct ieee80211_power_rule *power_rule;
unsigned int max_bandwidth_khz;
reg_rule = &regdom->reg_rules[i];
freq_range = &reg_rule->freq_range;
power_rule = &reg_rule->power_rule;
nl_reg_rule = nla_nest_start_noflag(msg, i);
if (!nl_reg_rule)
goto nla_put_failure;
max_bandwidth_khz = freq_range->max_bandwidth_khz;
if (!max_bandwidth_khz)
max_bandwidth_khz = reg_get_max_bandwidth(regdom,
reg_rule);
if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
reg_rule->flags) ||
nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
freq_range->start_freq_khz) ||
nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
freq_range->end_freq_khz) ||
nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
max_bandwidth_khz) ||
nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
power_rule->max_antenna_gain) ||
nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
power_rule->max_eirp) ||
nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
reg_rule->dfs_cac_ms))
goto nla_put_failure;
nla_nest_end(msg, nl_reg_rule);
}
nla_nest_end(msg, nl_reg_rules);
return 0;
nla_put_failure:
return -EMSGSIZE;
}
static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
{
const struct ieee80211_regdomain *regdom = NULL;
struct cfg80211_registered_device *rdev;
struct wiphy *wiphy = NULL;
struct sk_buff *msg;
int err = -EMSGSIZE;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOBUFS;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_GET_REG);
if (!hdr)
goto put_failure;
rtnl_lock();
if (info->attrs[NL80211_ATTR_WIPHY]) {
bool self_managed;
rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
if (IS_ERR(rdev)) {
err = PTR_ERR(rdev);
goto nla_put_failure;
}
wiphy = &rdev->wiphy;
self_managed = wiphy->regulatory_flags &
REGULATORY_WIPHY_SELF_MANAGED;
rcu_read_lock();
regdom = get_wiphy_regdom(wiphy);
/* a self-managed-reg device must have a private regdom */
if (WARN_ON(!regdom && self_managed)) {
err = -EINVAL;
goto nla_put_failure_rcu;
}
if (regdom &&
nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
goto nla_put_failure_rcu;
} else {
rcu_read_lock();
}
if (!wiphy && reg_last_request_cell_base() &&
nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
NL80211_USER_REG_HINT_CELL_BASE))
goto nla_put_failure_rcu;
if (!regdom)
regdom = rcu_dereference(cfg80211_regdomain);
if (nl80211_put_regdom(regdom, msg))
goto nla_put_failure_rcu;
rcu_read_unlock();
genlmsg_end(msg, hdr);
rtnl_unlock();
return genlmsg_reply(msg, info);
nla_put_failure_rcu:
rcu_read_unlock();
nla_put_failure:
rtnl_unlock();
put_failure:
nlmsg_free(msg);
return err;
}
static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
u32 seq, int flags, struct wiphy *wiphy,
const struct ieee80211_regdomain *regdom)
{
void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
NL80211_CMD_GET_REG);
if (!hdr)
return -1;
genl_dump_check_consistent(cb, hdr);
if (nl80211_put_regdom(regdom, msg))
goto nla_put_failure;
if (!wiphy && reg_last_request_cell_base() &&
nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
NL80211_USER_REG_HINT_CELL_BASE))
goto nla_put_failure;
if (wiphy &&
nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
goto nla_put_failure;
if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int nl80211_get_reg_dump(struct sk_buff *skb,
struct netlink_callback *cb)
{
const struct ieee80211_regdomain *regdom = NULL;
struct cfg80211_registered_device *rdev;
int err, reg_idx, start = cb->args[2];
rcu_read_lock();
if (cfg80211_regdomain && start == 0) {
err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
NLM_F_MULTI, NULL,
rcu_dereference(cfg80211_regdomain));
if (err < 0)
goto out_err;
}
/* the global regdom is idx 0 */
reg_idx = 1;
list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
regdom = get_wiphy_regdom(&rdev->wiphy);
if (!regdom)
continue;
if (++reg_idx <= start)
continue;
err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
NLM_F_MULTI, &rdev->wiphy, regdom);
if (err < 0) {
reg_idx--;
break;
}
}
cb->args[2] = reg_idx;
err = skb->len;
out_err:
rcu_read_unlock();
return err;
}
#ifdef CONFIG_CFG80211_CRDA_SUPPORT
static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
[NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
[NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
[NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
[NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
[NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
[NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
};
static int parse_reg_rule(struct nlattr *tb[],
struct ieee80211_reg_rule *reg_rule)
{
struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
return -EINVAL;
if (!tb[NL80211_ATTR_FREQ_RANGE_START])
return -EINVAL;
if (!tb[NL80211_ATTR_FREQ_RANGE_END])
return -EINVAL;
if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
return -EINVAL;
if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
return -EINVAL;
reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
freq_range->start_freq_khz =
nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
freq_range->end_freq_khz =
nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
freq_range->max_bandwidth_khz =
nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
power_rule->max_eirp =
nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
power_rule->max_antenna_gain =
nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
if (tb[NL80211_ATTR_DFS_CAC_TIME])
reg_rule->dfs_cac_ms =
nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
return 0;
}
static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
{
struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
struct nlattr *nl_reg_rule;
char *alpha2;
int rem_reg_rules, r;
u32 num_rules = 0, rule_idx = 0;
enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
struct ieee80211_regdomain *rd;
if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_REG_RULES])
return -EINVAL;
alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
if (info->attrs[NL80211_ATTR_DFS_REGION])
dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
rem_reg_rules) {
num_rules++;
if (num_rules > NL80211_MAX_SUPP_REG_RULES)
return -EINVAL;
}
rtnl_lock();
if (!reg_is_valid_request(alpha2)) {
r = -EINVAL;
goto out;
}
rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
if (!rd) {
r = -ENOMEM;
goto out;
}
rd->n_reg_rules = num_rules;
rd->alpha2[0] = alpha2[0];
rd->alpha2[1] = alpha2[1];
/*
* Disable DFS master mode if the DFS region was
* not supported or known on this kernel.
*/
if (reg_supported_dfs_region(dfs_region))
rd->dfs_region = dfs_region;
nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
rem_reg_rules) {
r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
nl_reg_rule, reg_rule_policy,
info->extack);
if (r)
goto bad_reg;
r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
if (r)
goto bad_reg;
rule_idx++;
if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
r = -EINVAL;
goto bad_reg;
}
}
r = set_regdom(rd, REGD_SOURCE_CRDA);
/* set_regdom takes ownership of rd */
rd = NULL;
bad_reg:
kfree(rd);
out:
rtnl_unlock();
return r;
}
#endif /* CONFIG_CFG80211_CRDA_SUPPORT */
static int validate_scan_freqs(struct nlattr *freqs)
{
struct nlattr *attr1, *attr2;
int n_channels = 0, tmp1, tmp2;
nla_for_each_nested(attr1, freqs, tmp1)
if (nla_len(attr1) != sizeof(u32))
return 0;
nla_for_each_nested(attr1, freqs, tmp1) {
n_channels++;
/*
* Some hardware has a limited channel list for
* scanning, and it is pretty much nonsensical
* to scan for a channel twice, so disallow that
* and don't require drivers to check that the
* channel list they get isn't longer than what
* they can scan, as long as they can scan all
* the channels they registered at once.
*/
nla_for_each_nested(attr2, freqs, tmp2)
if (attr1 != attr2 &&
nla_get_u32(attr1) == nla_get_u32(attr2))
return 0;
}
return n_channels;
}
static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
{
return b < NUM_NL80211_BANDS && wiphy->bands[b];
}
static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
struct cfg80211_bss_selection *bss_select)
{
struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
struct nlattr *nest;
int err;
bool found = false;
int i;
/* only process one nested attribute */
nest = nla_data(nla);
if (!nla_ok(nest, nla_len(nest)))
return -EINVAL;
err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
nest, nl80211_bss_select_policy,
NULL);
if (err)
return err;
/* only one attribute may be given */
for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
if (attr[i]) {
if (found)
return -EINVAL;
found = true;
}
}
bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
bss_select->param.band_pref =
nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
if (!is_band_valid(wiphy, bss_select->param.band_pref))
return -EINVAL;
}
if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
struct nl80211_bss_select_rssi_adjust *adj_param;
adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
bss_select->param.adjust.band = adj_param->band;
bss_select->param.adjust.delta = adj_param->delta;
if (!is_band_valid(wiphy, bss_select->param.adjust.band))
return -EINVAL;
}
/* user-space did not provide behaviour attribute */
if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
return -EINVAL;
if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
return -EINVAL;
return 0;
}
int nl80211_parse_random_mac(struct nlattr **attrs,
u8 *mac_addr, u8 *mac_addr_mask)
{
int i;
if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
eth_zero_addr(mac_addr);
eth_zero_addr(mac_addr_mask);
mac_addr[0] = 0x2;
mac_addr_mask[0] = 0x3;
return 0;
}
/* need both or none */
if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
return -EINVAL;
memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
/* don't allow or configure an mcast address */
if (!is_multicast_ether_addr(mac_addr_mask) ||
is_multicast_ether_addr(mac_addr))
return -EINVAL;
/*
* allow users to pass a MAC address that has bits set outside
* of the mask, but don't bother drivers with having to deal
* with such bits
*/
for (i = 0; i < ETH_ALEN; i++)
mac_addr[i] &= mac_addr_mask[i];
return 0;
}
static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev,
struct ieee80211_channel *chan)
{
unsigned int link_id;
bool all_ok = true;
ASSERT_WDEV_LOCK(wdev);
if (!cfg80211_beaconing_iface_active(wdev))
return true;
/*
* FIXME: check if we have a free HW resource/link for chan
*
* This, as well as the FIXME below, requires knowing the link
* capabilities of the hardware.
*/
/* we cannot leave radar channels */
for_each_valid_link(wdev, link_id) {
struct cfg80211_chan_def *chandef;
chandef = wdev_chandef(wdev, link_id);
if (!chandef || !chandef->chan)
continue;
/*
* FIXME: don't require all_ok, but rather check only the
* correct HW resource/link onto which 'chan' falls,
* as only that link leaves the channel for doing
* the off-channel operation.
*/
if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
all_ok = false;
}
if (all_ok)
return true;
return regulatory_pre_cac_allowed(wdev->wiphy);
}
static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
enum nl80211_ext_feature_index feat)
{
if (!(flags & flag))
return true;
if (wiphy_ext_feature_isset(wiphy, feat))
return true;
return false;
}
static int
nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
void *request, struct nlattr **attrs,
bool is_sched_scan)
{
u8 *mac_addr, *mac_addr_mask;
u32 *flags;
enum nl80211_feature_flags randomness_flag;
if (!attrs[NL80211_ATTR_SCAN_FLAGS])
return 0;
if (is_sched_scan) {
struct cfg80211_sched_scan_request *req = request;
randomness_flag = wdev ?
NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
flags = &req->flags;
mac_addr = req->mac_addr;
mac_addr_mask = req->mac_addr_mask;
} else {
struct cfg80211_scan_request *req = request;
randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
flags = &req->flags;
mac_addr = req->mac_addr;
mac_addr_mask = req->mac_addr_mask;
}
*flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
!(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
!nl80211_check_scan_feat(wiphy, *flags,
NL80211_SCAN_FLAG_LOW_SPAN,
NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
!nl80211_check_scan_feat(wiphy, *flags,
NL80211_SCAN_FLAG_LOW_POWER,
NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
!nl80211_check_scan_feat(wiphy, *flags,
NL80211_SCAN_FLAG_HIGH_ACCURACY,
NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
!nl80211_check_scan_feat(wiphy, *flags,
NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
!nl80211_check_scan_feat(wiphy, *flags,
NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
!nl80211_check_scan_feat(wiphy, *flags,
NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
!nl80211_check_scan_feat(wiphy, *flags,
NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
!nl80211_check_scan_feat(wiphy, *flags,
NL80211_SCAN_FLAG_RANDOM_SN,
NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
!nl80211_check_scan_feat(wiphy, *flags,
NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
return -EOPNOTSUPP;
if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
int err;
if (!(wiphy->features & randomness_flag) ||
(wdev && wdev->connected))
return -EOPNOTSUPP;
err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
if (err)
return err;
}
return 0;
}
static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
struct cfg80211_scan_request *request;
struct nlattr *scan_freqs = NULL;
bool scan_freqs_khz = false;
struct nlattr *attr;
struct wiphy *wiphy;
int err, tmp, n_ssids = 0, n_channels, i;
size_t ie_len, size;
wiphy = &rdev->wiphy;
if (wdev->iftype == NL80211_IFTYPE_NAN)
return -EOPNOTSUPP;
if (!rdev->ops->scan)
return -EOPNOTSUPP;
if (rdev->scan_req || rdev->scan_msg)
return -EBUSY;
if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
if (!wiphy_ext_feature_isset(wiphy,
NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
return -EOPNOTSUPP;
scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
scan_freqs_khz = true;
} else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
if (scan_freqs) {
n_channels = validate_scan_freqs(scan_freqs);
if (!n_channels)
return -EINVAL;
} else {
n_channels = ieee80211_get_num_supported_channels(wiphy);
}
if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
n_ssids++;
if (n_ssids > wiphy->max_scan_ssids)
return -EINVAL;
if (info->attrs[NL80211_ATTR_IE])
ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
else
ie_len = 0;
if (ie_len > wiphy->max_scan_ie_len)
return -EINVAL;
size = struct_size(request, channels, n_channels);
size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
size = size_add(size, ie_len);
request = kzalloc(size, GFP_KERNEL);
if (!request)
return -ENOMEM;
if (n_ssids)
request->ssids = (void *)&request->channels[n_channels];
request->n_ssids = n_ssids;
if (ie_len) {
if (n_ssids)
request->ie = (void *)(request->ssids + n_ssids);
else
request->ie = (void *)(request->channels + n_channels);
}
i = 0;
if (scan_freqs) {
/* user specified, bail out if channel not found */
nla_for_each_nested(attr, scan_freqs, tmp) {
struct ieee80211_channel *chan;
int freq = nla_get_u32(attr);
if (!scan_freqs_khz)
freq = MHZ_TO_KHZ(freq);
chan = ieee80211_get_channel_khz(wiphy, freq);
if (!chan) {
err = -EINVAL;
goto out_free;
}
/* ignore disabled channels */
if (chan->flags & IEEE80211_CHAN_DISABLED)
continue;
request->channels[i] = chan;
i++;
}
} else {
enum nl80211_band band;
/* all channels */
for (band = 0; band < NUM_NL80211_BANDS; band++) {
int j;
if (!wiphy->bands[band])
continue;
for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
struct ieee80211_channel *chan;
chan = &wiphy->bands[band]->channels[j];
if (chan->flags & IEEE80211_CHAN_DISABLED)
continue;
request->channels[i] = chan;
i++;
}
}
}
if (!i) {
err = -EINVAL;
goto out_free;
}
request->n_channels = i;
wdev_lock(wdev);
for (i = 0; i < request->n_channels; i++) {
struct ieee80211_channel *chan = request->channels[i];
/* if we can go off-channel to the target channel we're good */
if (cfg80211_off_channel_oper_allowed(wdev, chan))
continue;
if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) {
wdev_unlock(wdev);
err = -EBUSY;
goto out_free;
}
}
wdev_unlock(wdev);
i = 0;
if (n_ssids) {
nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
err = -EINVAL;
goto out_free;
}
request->ssids[i].ssid_len = nla_len(attr);
memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
i++;
}
}
if (info->attrs[NL80211_ATTR_IE]) {
request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
memcpy((void *)request->ie,
nla_data(info->attrs[NL80211_ATTR_IE]),
request->ie_len);
}
for (i = 0; i < NUM_NL80211_BANDS; i++)
if (wiphy->bands[i])
request->rates[i] =
(1 << wiphy->bands[i]->n_bitrates) - 1;
if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
nla_for_each_nested(attr,
info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
tmp) {
enum nl80211_band band = nla_type(attr);
if (band < 0 || band >= NUM_NL80211_BANDS) {
err = -EINVAL;
goto out_free;
}
if (!wiphy->bands[band])
continue;
err = ieee80211_get_ratemask(wiphy->bands[band],
nla_data(attr),
nla_len(attr),
&request->rates[band]);
if (err)
goto out_free;
}
}
if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
request->duration =
nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
request->duration_mandatory =
nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
}
err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
false);
if (err)
goto out_free;
request->no_cck =
nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
/* Initial implementation used NL80211_ATTR_MAC to set the specific
* BSSID to scan for. This was problematic because that same attribute
* was already used for another purpose (local random MAC address). The
* NL80211_ATTR_BSSID attribute was added to fix this. For backwards
* compatibility with older userspace components, also use the
* NL80211_ATTR_MAC value here if it can be determined to be used for
* the specific BSSID use case instead of the random MAC address
* (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
*/
if (info->attrs[NL80211_ATTR_BSSID])
memcpy(request->bssid,
nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
info->attrs[NL80211_ATTR_MAC])
memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
ETH_ALEN);
else
eth_broadcast_addr(request->bssid);
request->wdev = wdev;
request->wiphy = &rdev->wiphy;
request->scan_start = jiffies;
rdev->scan_req = request;
err = cfg80211_scan(rdev);
if (err)
goto out_free;
nl80211_send_scan_start(rdev, wdev);
dev_hold(wdev->netdev);
return 0;
out_free:
rdev->scan_req = NULL;
kfree(request);
return err;
}
static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
if (!rdev->ops->abort_scan)
return -EOPNOTSUPP;
if (rdev->scan_msg)
return 0;
if (!rdev->scan_req)
return -ENOENT;
rdev_abort_scan(rdev, wdev);
return 0;
}
static int
nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
struct cfg80211_sched_scan_request *request,
struct nlattr **attrs)
{
int tmp, err, i = 0;
struct nlattr *attr;
if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
u32 interval;
/*
* If scan plans are not specified,
* %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
* case one scan plan will be set with the specified scan
* interval and infinite number of iterations.
*/
interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
if (!interval)
return -EINVAL;
request->scan_plans[0].interval =
DIV_ROUND_UP(interval, MSEC_PER_SEC);
if (!request->scan_plans[0].interval)
return -EINVAL;
if (request->scan_plans[0].interval >
wiphy->max_sched_scan_plan_interval)
request->scan_plans[0].interval =
wiphy->max_sched_scan_plan_interval;
return 0;
}
nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
if (WARN_ON(i >= n_plans))
return -EINVAL;
err = nla_parse_nested_deprecated(plan,
NL80211_SCHED_SCAN_PLAN_MAX,
attr, nl80211_plan_policy,
NULL);
if (err)
return err;
if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
return -EINVAL;
request->scan_plans[i].interval =
nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
if (!request->scan_plans[i].interval ||
request->scan_plans[i].interval >
wiphy->max_sched_scan_plan_interval)
return -EINVAL;
if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
request->scan_plans[i].iterations =
nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
if (!request->scan_plans[i].iterations ||
(request->scan_plans[i].iterations >
wiphy->max_sched_scan_plan_iterations))
return -EINVAL;
} else if (i < n_plans - 1) {
/*
* All scan plans but the last one must specify
* a finite number of iterations
*/
return -EINVAL;
}
i++;
}
/*
* The last scan plan must not specify the number of
* iterations, it is supposed to run infinitely
*/
if (request->scan_plans[n_plans - 1].iterations)
return -EINVAL;
return 0;
}
static int
nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
struct cfg80211_match_set *match_sets,
struct nlattr *tb_band_rssi,
s32 rssi_thold)
{
struct nlattr *attr;
int i, tmp, ret = 0;
if (!wiphy_ext_feature_isset(wiphy,
NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
if (tb_band_rssi)
ret = -EOPNOTSUPP;
else
for (i = 0; i < NUM_NL80211_BANDS; i++)
match_sets->per_band_rssi_thold[i] =
NL80211_SCAN_RSSI_THOLD_OFF;
return ret;
}
for (i = 0; i < NUM_NL80211_BANDS; i++)
match_sets->per_band_rssi_thold[i] = rssi_thold;
nla_for_each_nested(attr, tb_band_rssi, tmp) {
enum nl80211_band band = nla_type(attr);
if (band < 0 || band >= NUM_NL80211_BANDS)
return -EINVAL;
match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
}
return 0;
}
static struct cfg80211_sched_scan_request *
nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
struct nlattr **attrs, int max_match_sets)
{
struct cfg80211_sched_scan_request *request;
struct nlattr *attr;
int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
enum nl80211_band band;
size_t ie_len, size;
struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
n_channels = validate_scan_freqs(
attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
if (!n_channels)
return ERR_PTR(-EINVAL);
} else {
n_channels = ieee80211_get_num_supported_channels(wiphy);
}
if (attrs[NL80211_ATTR_SCAN_SSIDS])
nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
tmp)
n_ssids++;
if (n_ssids > wiphy->max_sched_scan_ssids)
return ERR_PTR(-EINVAL);
/*
* First, count the number of 'real' matchsets. Due to an issue with
* the old implementation, matchsets containing only the RSSI attribute
* (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
* RSSI for all matchsets, rather than their own matchset for reporting
* all APs with a strong RSSI. This is needed to be compatible with
* older userspace that treated a matchset with only the RSSI as the
* global RSSI for all other matchsets - if there are other matchsets.
*/
if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
nla_for_each_nested(attr,
attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
tmp) {
struct nlattr *rssi;
err = nla_parse_nested_deprecated(tb,
NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
attr,
nl80211_match_policy,
NULL);
if (err)
return ERR_PTR(err);
/* SSID and BSSID are mutually exclusive */
if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
return ERR_PTR(-EINVAL);
/* add other standalone attributes here */
if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
n_match_sets++;
continue;
}
rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
if (rssi)
default_match_rssi = nla_get_s32(rssi);
}
}
/* However, if there's no other matchset, add the RSSI one */
if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
n_match_sets = 1;
if (n_match_sets > max_match_sets)
return ERR_PTR(-EINVAL);
if (attrs[NL80211_ATTR_IE])
ie_len = nla_len(attrs[NL80211_ATTR_IE]);
else
ie_len = 0;
if (ie_len > wiphy->max_sched_scan_ie_len)
return ERR_PTR(-EINVAL);
if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
/*
* NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
* each scan plan already specifies its own interval
*/
if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
return ERR_PTR(-EINVAL);
nla_for_each_nested(attr,
attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
n_plans++;
} else {
/*
* The scan interval attribute is kept for backward
* compatibility. If no scan plans are specified and sched scan
* interval is specified, one scan plan will be set with this
* scan interval and infinite number of iterations.
*/
if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
return ERR_PTR(-EINVAL);
n_plans = 1;
}
if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
return ERR_PTR(-EINVAL);
if (!wiphy_ext_feature_isset(
wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
(attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
return ERR_PTR(-EINVAL);
size = struct_size(request, channels, n_channels);
size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
size = size_add(size, array_size(sizeof(*request->match_sets),
n_match_sets));
size = size_add(size, array_size(sizeof(*request->scan_plans),
n_plans));
size = size_add(size, ie_len);
request = kzalloc(size, GFP_KERNEL);
if (!request)
return ERR_PTR(-ENOMEM);
if (n_ssids)
request->ssids = (void *)&request->channels[n_channels];
request->n_ssids = n_ssids;
if (ie_len) {
if (n_ssids)
request->ie = (void *)(request->ssids + n_ssids);
else
request->ie = (void *)(request->channels + n_channels);
}
if (n_match_sets) {
if (request->ie)
request->match_sets = (void *)(request->ie + ie_len);
else if (n_ssids)
request->match_sets =
(void *)(request->ssids + n_ssids);
else
request->match_sets =
(void *)(request->channels + n_channels);
}
request->n_match_sets = n_match_sets;
if (n_match_sets)
request->scan_plans = (void *)(request->match_sets +
n_match_sets);
else if (request->ie)
request->scan_plans = (void *)(request->ie + ie_len);
else if (n_ssids)
request->scan_plans = (void *)(request->ssids + n_ssids);
else
request->scan_plans = (void *)(request->channels + n_channels);
request->n_scan_plans = n_plans;
i = 0;
if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
/* user specified, bail out if channel not found */
nla_for_each_nested(attr,
attrs[NL80211_ATTR_SCAN_FREQUENCIES],
tmp) {
struct ieee80211_channel *chan;
chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
if (!chan) {
err = -EINVAL;
goto out_free;
}
/* ignore disabled channels */
if (chan->flags & IEEE80211_CHAN_DISABLED)
continue;
request->channels[i] = chan;
i++;
}
} else {
/* all channels */
for (band = 0; band < NUM_NL80211_BANDS; band++) {
int j;
if (!wiphy->bands[band])
continue;
for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
struct ieee80211_channel *chan;
chan = &wiphy->bands[band]->channels[j];
if (chan->flags & IEEE80211_CHAN_DISABLED)
continue;
request->channels[i] = chan;
i++;
}
}
}
if (!i) {
err = -EINVAL;
goto out_free;
}
request->n_channels = i;
i = 0;
if (n_ssids) {
nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
tmp) {
if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
err = -EINVAL;
goto out_free;
}
request->ssids[i].ssid_len = nla_len(attr);
memcpy(request->ssids[i].ssid, nla_data(attr),
nla_len(attr));
i++;
}
}
i = 0;
if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
nla_for_each_nested(attr,
attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
tmp) {
struct nlattr *ssid, *bssid, *rssi;
err = nla_parse_nested_deprecated(tb,
NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
attr,
nl80211_match_policy,
NULL);
if (err)
goto out_free;
ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
if (!ssid && !bssid) {
i++;
continue;
}
if (WARN_ON(i >= n_match_sets)) {
/* this indicates a programming error,
* the loop above should have verified
* things properly
*/
err = -EINVAL;
goto out_free;
}
if (ssid) {
memcpy(request->match_sets[i].ssid.ssid,
nla_data(ssid), nla_len(ssid));
request->match_sets[i].ssid.ssid_len =
nla_len(ssid);
}
if (bssid)
memcpy(request->match_sets[i].bssid,
nla_data(bssid), ETH_ALEN);
/* special attribute - old implementation w/a */
request->match_sets[i].rssi_thold = default_match_rssi;
rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
if (rssi)
request->match_sets[i].rssi_thold =
nla_get_s32(rssi);
/* Parse per band RSSI attribute */
err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
&request->match_sets[i],
tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
request->match_sets[i].rssi_thold);
if (err)
goto out_free;
i++;
}
/* there was no other matchset, so the RSSI one is alone */
if (i == 0 && n_match_sets)
request->match_sets[0].rssi_thold = default_match_rssi;
request->min_rssi_thold = INT_MAX;
for (i = 0; i < n_match_sets; i++)
request->min_rssi_thold =
min(request->match_sets[i].rssi_thold,
request->min_rssi_thold);
} else {
request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
}
if (ie_len) {
request->ie_len = ie_len;
memcpy((void *)request->ie,
nla_data(attrs[NL80211_ATTR_IE]),
request->ie_len);
}
err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
if (err)
goto out_free;
if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
request->delay =
nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
request->relative_rssi = nla_get_s8(
attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
request->relative_rssi_set = true;
}
if (request->relative_rssi_set &&
attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
struct nl80211_bss_select_rssi_adjust *rssi_adjust;
rssi_adjust = nla_data(
attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
request->rssi_adjust.band = rssi_adjust->band;
request->rssi_adjust.delta = rssi_adjust->delta;
if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
err = -EINVAL;
goto out_free;
}
}
err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
if (err)
goto out_free;
request->scan_start = jiffies;
return request;
out_free:
kfree(request);
return ERR_PTR(err);
}
static int nl80211_start_sched_scan(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_sched_scan_request *sched_scan_req;
bool want_multi;
int err;
if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
return -EOPNOTSUPP;
want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
err = cfg80211_sched_scan_req_possible(rdev, want_multi);
if (err)
return err;
sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
info->attrs,
rdev->wiphy.max_match_sets);
err = PTR_ERR_OR_ZERO(sched_scan_req);
if (err)
goto out_err;
/* leave request id zero for legacy request
* or if driver does not support multi-scheduled scan
*/
if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
if (err)
goto out_free;
sched_scan_req->dev = dev;
sched_scan_req->wiphy = &rdev->wiphy;
if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
sched_scan_req->owner_nlportid = info->snd_portid;
cfg80211_add_sched_scan_req(rdev, sched_scan_req);
nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
return 0;
out_free:
kfree(sched_scan_req);
out_err:
return err;
}
static int nl80211_stop_sched_scan(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_sched_scan_request *req;
struct cfg80211_registered_device *rdev = info->user_ptr[0];
u64 cookie;
if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
return -EOPNOTSUPP;
if (info->attrs[NL80211_ATTR_COOKIE]) {
cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
return __cfg80211_stop_sched_scan(rdev, cookie, false);
}
req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
struct cfg80211_sched_scan_request,
list);
if (!req || req->reqid ||
(req->owner_nlportid &&
req->owner_nlportid != info->snd_portid))
return -ENOENT;
return cfg80211_stop_sched_scan_req(rdev, req, false);
}
static int nl80211_start_radar_detection(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_chan_def chandef;
enum nl80211_dfs_regions dfs_region;
unsigned int cac_time_ms;
int err = -EINVAL;
flush_delayed_work(&rdev->dfs_update_channels_wk);
wiphy_lock(wiphy);
dfs_region = reg_get_dfs_region(wiphy);
if (dfs_region == NL80211_DFS_UNSET)
goto unlock;
err = nl80211_parse_chandef(rdev, info, &chandef);
if (err)
goto unlock;
err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
if (err < 0)
goto unlock;
if (err == 0) {
err = -EINVAL;
goto unlock;
}
if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
err = -EINVAL;
goto unlock;
}
if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
err = cfg80211_start_background_radar_detection(rdev, wdev,
&chandef);
goto unlock;
}
if (netif_carrier_ok(dev)) {
err = -EBUSY;
goto unlock;
}
if (wdev->cac_started) {
err = -EBUSY;
goto unlock;
}
/* CAC start is offloaded to HW and can't be started manually */
if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
err = -EOPNOTSUPP;
goto unlock;
}
if (!rdev->ops->start_radar_detection) {
err = -EOPNOTSUPP;
goto unlock;
}
cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
if (WARN_ON(!cac_time_ms))
cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
if (!err) {
wdev->links[0].ap.chandef = chandef;
wdev->cac_started = true;
wdev->cac_start_time = jiffies;
wdev->cac_time_ms = cac_time_ms;
}
unlock:
wiphy_unlock(wiphy);
return err;
}
static int nl80211_notify_radar_detection(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_chan_def chandef;
enum nl80211_dfs_regions dfs_region;
int err;
dfs_region = reg_get_dfs_region(wiphy);
if (dfs_region == NL80211_DFS_UNSET) {
GENL_SET_ERR_MSG(info,
"DFS Region is not set. Unexpected Radar indication");
return -EINVAL;
}
err = nl80211_parse_chandef(rdev, info, &chandef);
if (err) {
GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
return err;
}
err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
if (err < 0) {
GENL_SET_ERR_MSG(info, "chandef is invalid");
return err;
}
if (err == 0) {
GENL_SET_ERR_MSG(info,
"Unexpected Radar indication for chandef/iftype");
return -EINVAL;
}
/* Do not process this notification if radar is already detected
* by kernel on this channel, and return success.
*/
if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
return 0;
cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
cfg80211_sched_dfs_chan_update(rdev);
rdev->radar_chandef = chandef;
/* Propagate this notification to other radios as well */
queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
return 0;
}
static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
unsigned int link_id = nl80211_link_id(info->attrs);
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_csa_settings params;
struct nlattr **csa_attrs = NULL;
int err;
bool need_new_beacon = false;
bool need_handle_dfs_flag = true;
int len, i;
u32 cs_count;
if (!rdev->ops->channel_switch ||
!(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
return -EOPNOTSUPP;
switch (dev->ieee80211_ptr->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_P2P_GO:
need_new_beacon = true;
/* For all modes except AP the handle_dfs flag needs to be
* supplied to tell the kernel that userspace will handle radar
* events when they happen. Otherwise a switch to a channel
* requiring DFS will be rejected.
*/
need_handle_dfs_flag = false;
/* useless if AP is not running */
if (!wdev->links[link_id].ap.beacon_interval)
return -ENOTCONN;
break;
case NL80211_IFTYPE_ADHOC:
if (!wdev->u.ibss.ssid_len)
return -ENOTCONN;
break;
case NL80211_IFTYPE_MESH_POINT:
if (!wdev->u.mesh.id_len)
return -ENOTCONN;
break;
default:
return -EOPNOTSUPP;
}
memset(&params, 0, sizeof(params));
params.beacon_csa.ftm_responder = -1;
if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
!info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
return -EINVAL;
/* only important for AP, IBSS and mesh create IEs internally */
if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
return -EINVAL;
/* Even though the attribute is u32, the specification says
* u8, so let's make sure we don't overflow.
*/
cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
if (cs_count > 255)
return -EINVAL;
params.count = cs_count;
if (!need_new_beacon)
goto skip_beacons;
err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after,
info->extack);
if (err)
goto free;
csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
GFP_KERNEL);
if (!csa_attrs) {
err = -ENOMEM;
goto free;
}
err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
info->attrs[NL80211_ATTR_CSA_IES],
nl80211_policy, info->extack);
if (err)
goto free;
err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa,
info->extack);
if (err)
goto free;
if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
err = -EINVAL;
goto free;
}
len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
if (!len || (len % sizeof(u16))) {
err = -EINVAL;
goto free;
}
params.n_counter_offsets_beacon = len / sizeof(u16);
if (rdev->wiphy.max_num_csa_counters &&
(params.n_counter_offsets_beacon >
rdev->wiphy.max_num_csa_counters)) {
err = -EINVAL;
goto free;
}
params.counter_offsets_beacon =
nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
/* sanity checks - counters should fit and be the same */
for (i = 0; i < params.n_counter_offsets_beacon; i++) {
u16 offset = params.counter_offsets_beacon[i];
if (offset >= params.beacon_csa.tail_len) {
err = -EINVAL;
goto free;
}
if (params.beacon_csa.tail[offset] != params.count) {
err = -EINVAL;
goto free;
}
}
if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
if (!len || (len % sizeof(u16))) {
err = -EINVAL;
goto free;
}
params.n_counter_offsets_presp = len / sizeof(u16);
if (rdev->wiphy.max_num_csa_counters &&
(params.n_counter_offsets_presp >
rdev->wiphy.max_num_csa_counters)) {
err = -EINVAL;
goto free;
}
params.counter_offsets_presp =
nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
/* sanity checks - counters should fit and be the same */
for (i = 0; i < params.n_counter_offsets_presp; i++) {
u16 offset = params.counter_offsets_presp[i];
if (offset >= params.beacon_csa.probe_resp_len) {
err = -EINVAL;
goto free;
}
if (params.beacon_csa.probe_resp[offset] !=
params.count) {
err = -EINVAL;
goto free;
}
}
}
skip_beacons:
err = nl80211_parse_chandef(rdev, info, &params.chandef);
if (err)
goto free;
if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
wdev->iftype)) {
err = -EINVAL;
goto free;
}
err = cfg80211_chandef_dfs_required(wdev->wiphy,
&params.chandef,
wdev->iftype);
if (err < 0)
goto free;
if (err > 0) {
params.radar_required = true;
if (need_handle_dfs_flag &&
!nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
err = -EINVAL;
goto free;
}
}
if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
params.block_tx = true;
if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
err = nl80211_parse_punct_bitmap(rdev, info,
&params.chandef,
&params.punct_bitmap);
if (err)
goto free;
}
wdev_lock(wdev);
err = rdev_channel_switch(rdev, dev, &params);
wdev_unlock(wdev);
free:
kfree(params.beacon_after.mbssid_ies);
kfree(params.beacon_csa.mbssid_ies);
kfree(params.beacon_after.rnr_ies);
kfree(params.beacon_csa.rnr_ies);
kfree(csa_attrs);
return err;
}
static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
u32 seq, int flags,
struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
struct cfg80211_internal_bss *intbss)
{
struct cfg80211_bss *res = &intbss->pub;
const struct cfg80211_bss_ies *ies;
unsigned int link_id;
void *hdr;
struct nlattr *bss;
ASSERT_WDEV_LOCK(wdev);
hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
NL80211_CMD_NEW_SCAN_RESULTS);
if (!hdr)
return -1;
genl_dump_check_consistent(cb, hdr);
if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
goto nla_put_failure;
if (wdev->netdev &&
nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
goto nla_put_failure;
if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD))
goto nla_put_failure;
bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
if (!bss)
goto nla_put_failure;
if ((!is_zero_ether_addr(res->bssid) &&
nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
goto nla_put_failure;
rcu_read_lock();
/* indicate whether we have probe response data or not */
if (rcu_access_pointer(res->proberesp_ies) &&
nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
goto fail_unlock_rcu;
/* this pointer prefers to be pointed to probe response data
* but is always valid
*/
ies = rcu_dereference(res->ies);
if (ies) {
if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
NL80211_BSS_PAD))
goto fail_unlock_rcu;
if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
ies->len, ies->data))
goto fail_unlock_rcu;
}
/* and this pointer is always (unless driver didn't know) beacon data */
ies = rcu_dereference(res->beacon_ies);
if (ies && ies->from_beacon) {
if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
NL80211_BSS_PAD))
goto fail_unlock_rcu;
if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
ies->len, ies->data))
goto fail_unlock_rcu;
}
rcu_read_unlock();
if (res->beacon_interval &&
nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
goto nla_put_failure;
if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
res->channel->freq_offset) ||
nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
jiffies_to_msecs(jiffies - intbss->ts)))
goto nla_put_failure;
if (intbss->parent_tsf &&
(nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
intbss->parent_tsf, NL80211_BSS_PAD) ||
nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
intbss->parent_bssid)))
goto nla_put_failure;
if (intbss->ts_boottime &&
nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
intbss->ts_boottime, NL80211_BSS_PAD))
goto nla_put_failure;
if (!nl80211_put_signal(msg, intbss->pub.chains,
intbss->pub.chain_signal,
NL80211_BSS_CHAIN_SIGNAL))
goto nla_put_failure;
switch (rdev->wiphy.signal_type) {
case CFG80211_SIGNAL_TYPE_MBM:
if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
goto nla_put_failure;
break;
case CFG80211_SIGNAL_TYPE_UNSPEC:
if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
goto nla_put_failure;
break;
default:
break;
}
switch (wdev->iftype) {
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_STATION:
for_each_valid_link(wdev, link_id) {
if (intbss == wdev->links[link_id].client.current_bss &&
(nla_put_u32(msg, NL80211_BSS_STATUS,
NL80211_BSS_STATUS_ASSOCIATED) ||
(wdev->valid_links &&
(nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
link_id) ||
nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN,
wdev->u.client.connected_addr)))))
goto nla_put_failure;
}
break;
case NL80211_IFTYPE_ADHOC:
if (intbss == wdev->u.ibss.current_bss &&
nla_put_u32(msg, NL80211_BSS_STATUS,
NL80211_BSS_STATUS_IBSS_JOINED))
goto nla_put_failure;
break;
default:
break;
}
nla_nest_end(msg, bss);
genlmsg_end(msg, hdr);
return 0;
fail_unlock_rcu:
rcu_read_unlock();
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
{
struct cfg80211_registered_device *rdev;
struct cfg80211_internal_bss *scan;
struct wireless_dev *wdev;
int start = cb->args[2], idx = 0;
int err;
err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
if (err)
return err;
/* nl80211_prepare_wdev_dump acquired it in the successful case */
__acquire(&rdev->wiphy.mtx);
wdev_lock(wdev);
spin_lock_bh(&rdev->bss_lock);
/*
* dump_scan will be called multiple times to break up the scan results
* into multiple messages. It is unlikely that any more bss-es will be
* expired after the first call, so only call only call this on the
* first dump_scan invocation.
*/
if (start == 0)
cfg80211_bss_expire(rdev);
cb->seq = rdev->bss_generation;
list_for_each_entry(scan, &rdev->bss_list, list) {
if (++idx <= start)
continue;
if (nl80211_send_bss(skb, cb,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
rdev, wdev, scan) < 0) {
idx--;
break;
}
}
spin_unlock_bh(&rdev->bss_lock);
wdev_unlock(wdev);
cb->args[2] = idx;
wiphy_unlock(&rdev->wiphy);
return skb->len;
}
static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
int flags, struct net_device *dev,
bool allow_radio_stats,
struct survey_info *survey)
{
void *hdr;
struct nlattr *infoattr;
/* skip radio stats if userspace didn't request them */
if (!survey->channel && !allow_radio_stats)
return 0;
hdr = nl80211hdr_put(msg, portid, seq, flags,
NL80211_CMD_NEW_SURVEY_RESULTS);
if (!hdr)
return -ENOMEM;
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
goto nla_put_failure;
infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
if (!infoattr)
goto nla_put_failure;
if (survey->channel &&
nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
survey->channel->center_freq))
goto nla_put_failure;
if (survey->channel && survey->channel->freq_offset &&
nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
survey->channel->freq_offset))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_IN_USE) &&
nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_TIME) &&
nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
survey->time, NL80211_SURVEY_INFO_PAD))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
survey->time_busy, NL80211_SURVEY_INFO_PAD))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_TIME_RX) &&
nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
survey->time_rx, NL80211_SURVEY_INFO_PAD))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_TIME_TX) &&
nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
survey->time_tx, NL80211_SURVEY_INFO_PAD))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
survey->time_scan, NL80211_SURVEY_INFO_PAD))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
goto nla_put_failure;
nla_nest_end(msg, infoattr);
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
{
struct nlattr **attrbuf;
struct survey_info survey;
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
int survey_idx = cb->args[2];
int res;
bool radio_stats;
attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
if (!attrbuf)
return -ENOMEM;
res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
if (res) {
kfree(attrbuf);
return res;
}
/* nl80211_prepare_wdev_dump acquired it in the successful case */
__acquire(&rdev->wiphy.mtx);
/* prepare_wdev_dump parsed the attributes */
radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
if (!wdev->netdev) {
res = -EINVAL;
goto out_err;
}
if (!rdev->ops->dump_survey) {
res = -EOPNOTSUPP;
goto out_err;
}
while (1) {
wdev_lock(wdev);
res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
wdev_unlock(wdev);
if (res == -ENOENT)
break;
if (res)
goto out_err;
/* don't send disabled channels, but do send non-channel data */
if (survey.channel &&
survey.channel->flags & IEEE80211_CHAN_DISABLED) {
survey_idx++;
continue;
}
if (nl80211_send_survey(skb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
wdev->netdev, radio_stats, &survey) < 0)
goto out;
survey_idx++;
}
out:
cb->args[2] = survey_idx;
res = skb->len;
out_err:
kfree(attrbuf);
wiphy_unlock(&rdev->wiphy);
return res;
}
static bool nl80211_valid_wpa_versions(u32 wpa_versions)
{
return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
NL80211_WPA_VERSION_2 |
NL80211_WPA_VERSION_3));
}
static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct ieee80211_channel *chan;
const u8 *bssid, *ssid;
int err, ssid_len;
enum nl80211_auth_type auth_type;
struct key_parse key;
bool local_state_change;
struct cfg80211_auth_request req = {};
u32 freq;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_SSID])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
return -EINVAL;
err = nl80211_parse_key(info, &key);
if (err)
return err;
if (key.idx >= 0) {
if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
return -EINVAL;
if (!key.p.key || !key.p.key_len)
return -EINVAL;
if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
key.p.key_len != WLAN_KEY_LEN_WEP40) &&
(key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
key.p.key_len != WLAN_KEY_LEN_WEP104))
return -EINVAL;
if (key.idx > 3)
return -EINVAL;
} else {
key.p.key_len = 0;
key.p.key = NULL;
}
if (key.idx >= 0) {
int i;
bool ok = false;
for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
ok = true;
break;
}
}
if (!ok)
return -EINVAL;
}
if (!rdev->ops->auth)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
freq +=
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
if (!chan)
return -EINVAL;
ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
if (info->attrs[NL80211_ATTR_IE]) {
req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
}
auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
return -EINVAL;
if ((auth_type == NL80211_AUTHTYPE_SAE ||
auth_type == NL80211_AUTHTYPE_FILS_SK ||
auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
auth_type == NL80211_AUTHTYPE_FILS_PK) &&
!info->attrs[NL80211_ATTR_AUTH_DATA])
return -EINVAL;
if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
if (auth_type != NL80211_AUTHTYPE_SAE &&
auth_type != NL80211_AUTHTYPE_FILS_SK &&
auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
auth_type != NL80211_AUTHTYPE_FILS_PK)
return -EINVAL;
req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
}
local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
/*
* Since we no longer track auth state, ignore
* requests to only change local state.
*/
if (local_state_change)
return 0;
req.auth_type = auth_type;
req.key = key.p.key;
req.key_len = key.p.key_len;
req.key_idx = key.idx;
req.link_id = nl80211_link_id_or_invalid(info->attrs);
if (req.link_id >= 0) {
if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
return -EINVAL;
if (!info->attrs[NL80211_ATTR_MLD_ADDR])
return -EINVAL;
req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
if (!is_valid_ether_addr(req.ap_mld_addr))
return -EINVAL;
}
req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
IEEE80211_BSS_TYPE_ESS,
IEEE80211_PRIVACY_ANY);
if (!req.bss)
return -ENOENT;
wdev_lock(dev->ieee80211_ptr);
err = cfg80211_mlme_auth(rdev, dev, &req);
wdev_unlock(dev->ieee80211_ptr);
cfg80211_put_bss(&rdev->wiphy, req.bss);
return err;
}
static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
struct genl_info *info)
{
if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
return -EINVAL;
}
if (!rdev->ops->tx_control_port ||
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
return -EOPNOTSUPP;
return 0;
}
static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
struct genl_info *info,
struct cfg80211_crypto_settings *settings,
int cipher_limit)
{
memset(settings, 0, sizeof(*settings));
settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
u16 proto;
proto = nla_get_u16(
info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
settings->control_port_ethertype = cpu_to_be16(proto);
if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
proto != ETH_P_PAE)
return -EINVAL;
if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
settings->control_port_no_encrypt = true;
} else
settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
int r = validate_pae_over_nl80211(rdev, info);
if (r < 0)
return r;
settings->control_port_over_nl80211 = true;
if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
settings->control_port_no_preauth = true;
}
if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
void *data;
int len, i;
data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
settings->n_ciphers_pairwise = len / sizeof(u32);
if (len % sizeof(u32))
return -EINVAL;
if (settings->n_ciphers_pairwise > cipher_limit)
return -EINVAL;
memcpy(settings->ciphers_pairwise, data, len);
for (i = 0; i < settings->n_ciphers_pairwise; i++)
if (!cfg80211_supported_cipher_suite(
&rdev->wiphy,
settings->ciphers_pairwise[i]))
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
settings->cipher_group =
nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
settings->cipher_group))
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
settings->wpa_versions =
nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
if (!nl80211_valid_wpa_versions(settings->wpa_versions))
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
void *data;
int len;
data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
settings->n_akm_suites = len / sizeof(u32);
if (len % sizeof(u32))
return -EINVAL;
if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
return -EINVAL;
memcpy(settings->akm_suites, data, len);
}
if (info->attrs[NL80211_ATTR_PMK]) {
if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
return -EINVAL;
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
return -EINVAL;
settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
}
if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
return -EINVAL;
settings->sae_pwd =
nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
settings->sae_pwd_len =
nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
}
if (info->attrs[NL80211_ATTR_SAE_PWE])
settings->sae_pwe =
nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
else
settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
return 0;
}
static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
const u8 *ssid, int ssid_len,
struct nlattr **attrs)
{
struct ieee80211_channel *chan;
struct cfg80211_bss *bss;
const u8 *bssid;
u32 freq;
if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
return ERR_PTR(-EINVAL);
bssid = nla_data(attrs[NL80211_ATTR_MAC]);
freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
if (!chan)
return ERR_PTR(-EINVAL);
bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid,
ssid, ssid_len,
IEEE80211_BSS_TYPE_ESS,
IEEE80211_PRIVACY_ANY);
if (!bss)
return ERR_PTR(-ENOENT);
return bss;
}
static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct cfg80211_assoc_request req = {};
struct nlattr **attrs = NULL;
const u8 *ap_addr, *ssid;
unsigned int link_id;
int err, ssid_len;
if (dev->ieee80211_ptr->conn_owner_nlportid &&
dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
return -EPERM;
if (!info->attrs[NL80211_ATTR_SSID])
return -EINVAL;
if (!rdev->ops->assoc)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
if (info->attrs[NL80211_ATTR_IE]) {
req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
req.ie, req.ie_len)) {
GENL_SET_ERR_MSG(info,
"non-inheritance makes no sense");
return -EINVAL;
}
}
if (info->attrs[NL80211_ATTR_USE_MFP]) {
enum nl80211_mfp mfp =
nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
if (mfp == NL80211_MFP_REQUIRED)
req.use_mfp = true;
else if (mfp != NL80211_MFP_NO)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_PREV_BSSID])
req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
req.flags |= ASSOC_REQ_DISABLE_HT;
if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
memcpy(&req.ht_capa_mask,
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
sizeof(req.ht_capa_mask));
if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
return -EINVAL;
memcpy(&req.ht_capa,
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
sizeof(req.ht_capa));
}
if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
req.flags |= ASSOC_REQ_DISABLE_VHT;
if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
req.flags |= ASSOC_REQ_DISABLE_HE;
if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
req.flags |= ASSOC_REQ_DISABLE_EHT;
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
memcpy(&req.vht_capa_mask,
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
sizeof(req.vht_capa_mask));
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
return -EINVAL;
memcpy(&req.vht_capa,
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
sizeof(req.vht_capa));
}
if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
if (!((rdev->wiphy.features &
NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
(rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_RRM))
return -EINVAL;
req.flags |= ASSOC_REQ_USE_RRM;
}
if (info->attrs[NL80211_ATTR_FILS_KEK]) {
req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
if (!info->attrs[NL80211_ATTR_FILS_NONCES])
return -EINVAL;
req.fils_nonces =
nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
}
if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
return -EINVAL;
memcpy(&req.s1g_capa_mask,
nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
sizeof(req.s1g_capa_mask));
}
if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
return -EINVAL;
memcpy(&req.s1g_capa,
nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
sizeof(req.s1g_capa));
}
req.link_id = nl80211_link_id_or_invalid(info->attrs);
if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
struct nlattr *link;
int rem = 0;
if (req.link_id < 0)
return -EINVAL;
if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
return -EINVAL;
if (info->attrs[NL80211_ATTR_MAC] ||
info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
!info->attrs[NL80211_ATTR_MLD_ADDR])
return -EINVAL;
req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
ap_addr = req.ap_mld_addr;
attrs = kzalloc(attrsize, GFP_KERNEL);
if (!attrs)
return -ENOMEM;
nla_for_each_nested(link,
info->attrs[NL80211_ATTR_MLO_LINKS],
rem) {
memset(attrs, 0, attrsize);
nla_parse_nested(attrs, NL80211_ATTR_MAX,
link, NULL, NULL);
if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
err = -EINVAL;
goto free;
}
link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
/* cannot use the same link ID again */
if (req.links[link_id].bss) {
err = -EINVAL;
goto free;
}
req.links[link_id].bss =
nl80211_assoc_bss(rdev, ssid, ssid_len, attrs);
if (IS_ERR(req.links[link_id].bss)) {
err = PTR_ERR(req.links[link_id].bss);
req.links[link_id].bss = NULL;
goto free;
}
if (attrs[NL80211_ATTR_IE]) {
req.links[link_id].elems =
nla_data(attrs[NL80211_ATTR_IE]);
req.links[link_id].elems_len =
nla_len(attrs[NL80211_ATTR_IE]);
if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
req.links[link_id].elems,
req.links[link_id].elems_len)) {
GENL_SET_ERR_MSG(info,
"cannot deal with fragmentation");
err = -EINVAL;
goto free;
}
if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
req.links[link_id].elems,
req.links[link_id].elems_len)) {
GENL_SET_ERR_MSG(info,
"cannot deal with non-inheritance");
err = -EINVAL;
goto free;
}
}
req.links[link_id].disabled =
nla_get_flag(attrs[NL80211_ATTR_MLO_LINK_DISABLED]);
}
if (!req.links[req.link_id].bss) {
err = -EINVAL;
goto free;
}
if (req.links[req.link_id].elems_len) {
GENL_SET_ERR_MSG(info,
"cannot have per-link elems on assoc link");
err = -EINVAL;
goto free;
}
if (req.links[req.link_id].disabled) {
GENL_SET_ERR_MSG(info,
"cannot have assoc link disabled");
err = -EINVAL;
goto free;
}
kfree(attrs);
attrs = NULL;
} else {
if (req.link_id >= 0)
return -EINVAL;
req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs);
if (IS_ERR(req.bss))
return PTR_ERR(req.bss);
ap_addr = req.bss->bssid;
}
err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
if (!err) {
wdev_lock(dev->ieee80211_ptr);
err = cfg80211_mlme_assoc(rdev, dev, &req);
if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
dev->ieee80211_ptr->conn_owner_nlportid =
info->snd_portid;
memcpy(dev->ieee80211_ptr->disconnect_bssid,
ap_addr, ETH_ALEN);
}
wdev_unlock(dev->ieee80211_ptr);
}
free:
for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
cfg80211_put_bss(&rdev->wiphy, req.bss);
kfree(attrs);
return err;
}
static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
const u8 *ie = NULL, *bssid;
int ie_len = 0, err;
u16 reason_code;
bool local_state_change;
if (dev->ieee80211_ptr->conn_owner_nlportid &&
dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
return -EPERM;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_REASON_CODE])
return -EINVAL;
if (!rdev->ops->deauth)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
if (reason_code == 0) {
/* Reason Code 0 is reserved */
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_IE]) {
ie = nla_data(info->attrs[NL80211_ATTR_IE]);
ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
}
local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
wdev_lock(dev->ieee80211_ptr);
err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
local_state_change);
wdev_unlock(dev->ieee80211_ptr);
return err;
}
static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
const u8 *ie = NULL, *bssid;
int ie_len = 0, err;
u16 reason_code;
bool local_state_change;
if (dev->ieee80211_ptr->conn_owner_nlportid &&
dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
return -EPERM;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_REASON_CODE])
return -EINVAL;
if (!rdev->ops->disassoc)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
if (reason_code == 0) {
/* Reason Code 0 is reserved */
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_IE]) {
ie = nla_data(info->attrs[NL80211_ATTR_IE]);
ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
}
local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
wdev_lock(dev->ieee80211_ptr);
err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
local_state_change);
wdev_unlock(dev->ieee80211_ptr);
return err;
}
static bool
nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
int mcast_rate[NUM_NL80211_BANDS],
int rateval)
{
struct wiphy *wiphy = &rdev->wiphy;
bool found = false;
int band, i;
for (band = 0; band < NUM_NL80211_BANDS; band++) {
struct ieee80211_supported_band *sband;
sband = wiphy->bands[band];
if (!sband)
continue;
for (i = 0; i < sband->n_bitrates; i++) {
if (sband->bitrates[i].bitrate == rateval) {
mcast_rate[band] = i + 1;
found = true;
break;
}
}
}
return found;
}
static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct cfg80211_ibss_params ibss;
struct wiphy *wiphy;
struct cfg80211_cached_keys *connkeys = NULL;
int err;
memset(&ibss, 0, sizeof(ibss));
if (!info->attrs[NL80211_ATTR_SSID] ||
!nla_len(info->attrs[NL80211_ATTR_SSID]))
return -EINVAL;
ibss.beacon_interval = 100;
if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
ibss.beacon_interval =
nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
ibss.beacon_interval);
if (err)
return err;
if (!rdev->ops->join_ibss)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
return -EOPNOTSUPP;
wiphy = &rdev->wiphy;
if (info->attrs[NL80211_ATTR_MAC]) {
ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (!is_valid_ether_addr(ibss.bssid))
return -EINVAL;
}
ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
if (info->attrs[NL80211_ATTR_IE]) {
ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
}
err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
if (err)
return err;
if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
NL80211_IFTYPE_ADHOC))
return -EINVAL;
switch (ibss.chandef.width) {
case NL80211_CHAN_WIDTH_5:
case NL80211_CHAN_WIDTH_10:
case NL80211_CHAN_WIDTH_20_NOHT:
break;
case NL80211_CHAN_WIDTH_20:
case NL80211_CHAN_WIDTH_40:
if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
return -EINVAL;
break;
case NL80211_CHAN_WIDTH_80:
case NL80211_CHAN_WIDTH_80P80:
case NL80211_CHAN_WIDTH_160:
if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
return -EINVAL;
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_VHT_IBSS))
return -EINVAL;
break;
case NL80211_CHAN_WIDTH_320:
return -EINVAL;
default:
return -EINVAL;
}
ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
u8 *rates =
nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
int n_rates =
nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
struct ieee80211_supported_band *sband =
wiphy->bands[ibss.chandef.chan->band];
err = ieee80211_get_ratemask(sband, rates, n_rates,
&ibss.basic_rates);
if (err)
return err;
}
if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
memcpy(&ibss.ht_capa_mask,
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
sizeof(ibss.ht_capa_mask));
if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
return -EINVAL;
memcpy(&ibss.ht_capa,
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
sizeof(ibss.ht_capa));
}
if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
!nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
return -EINVAL;
if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
bool no_ht = false;
connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
if (IS_ERR(connkeys))
return PTR_ERR(connkeys);
if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
no_ht) {
kfree_sensitive(connkeys);
return -EINVAL;
}
}
ibss.control_port =
nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
int r = validate_pae_over_nl80211(rdev, info);
if (r < 0) {
kfree_sensitive(connkeys);
return r;
}
ibss.control_port_over_nl80211 = true;
}
ibss.userspace_handles_dfs =
nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
wdev_lock(dev->ieee80211_ptr);
err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
if (err)
kfree_sensitive(connkeys);
else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
wdev_unlock(dev->ieee80211_ptr);
return err;
}
static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
if (!rdev->ops->leave_ibss)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
return -EOPNOTSUPP;
return cfg80211_leave_ibss(rdev, dev, false);
}
static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
int mcast_rate[NUM_NL80211_BANDS];
u32 nla_rate;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
return -EOPNOTSUPP;
if (!rdev->ops->set_mcast_rate)
return -EOPNOTSUPP;
memset(mcast_rate, 0, sizeof(mcast_rate));
if (!info->attrs[NL80211_ATTR_MCAST_RATE])
return -EINVAL;
nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
return -EINVAL;
return rdev_set_mcast_rate(rdev, dev, mcast_rate);
}
static struct sk_buff *
__cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev, int approxlen,
u32 portid, u32 seq, enum nl80211_commands cmd,
enum nl80211_attrs attr,
const struct nl80211_vendor_cmd_info *info,
gfp_t gfp)
{
struct sk_buff *skb;
void *hdr;
struct nlattr *data;
skb = nlmsg_new(approxlen + 100, gfp);
if (!skb)
return NULL;
hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
if (!hdr) {
kfree_skb(skb);
return NULL;
}
if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
goto nla_put_failure;
if (info) {
if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
info->vendor_id))
goto nla_put_failure;
if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
info->subcmd))
goto nla_put_failure;
}
if (wdev) {
if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
wdev_id(wdev), NL80211_ATTR_PAD))
goto nla_put_failure;
if (wdev->netdev &&
nla_put_u32(skb, NL80211_ATTR_IFINDEX,
wdev->netdev->ifindex))
goto nla_put_failure;
}
data = nla_nest_start_noflag(skb, attr);
if (!data)
goto nla_put_failure;
((void **)skb->cb)[0] = rdev;
((void **)skb->cb)[1] = hdr;
((void **)skb->cb)[2] = data;
return skb;
nla_put_failure:
kfree_skb(skb);
return NULL;
}
struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
struct wireless_dev *wdev,
enum nl80211_commands cmd,
enum nl80211_attrs attr,
unsigned int portid,
int vendor_event_idx,
int approxlen, gfp_t gfp)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
const struct nl80211_vendor_cmd_info *info;
switch (cmd) {
case NL80211_CMD_TESTMODE:
if (WARN_ON(vendor_event_idx != -1))
return NULL;
info = NULL;
break;
case NL80211_CMD_VENDOR:
if (WARN_ON(vendor_event_idx < 0 ||
vendor_event_idx >= wiphy->n_vendor_events))
return NULL;
info = &wiphy->vendor_events[vendor_event_idx];
break;
default:
WARN_ON(1);
return NULL;
}
return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
cmd, attr, info, gfp);
}
EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
{
struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
void *hdr = ((void **)skb->cb)[1];
struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
struct nlattr *data = ((void **)skb->cb)[2];
enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
/* clear CB data for netlink core to own from now on */
memset(skb->cb, 0, sizeof(skb->cb));
nla_nest_end(skb, data);
genlmsg_end(skb, hdr);
if (nlhdr->nlmsg_pid) {
genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
nlhdr->nlmsg_pid);
} else {
if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
mcgrp = NL80211_MCGRP_VENDOR;
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
skb, 0, mcgrp, gfp);
}
}
EXPORT_SYMBOL(__cfg80211_send_event_skb);
#ifdef CONFIG_NL80211_TESTMODE
static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev;
int err;
lockdep_assert_held(&rdev->wiphy.mtx);
wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
info->attrs);
if (!rdev->ops->testmode_cmd)
return -EOPNOTSUPP;
if (IS_ERR(wdev)) {
err = PTR_ERR(wdev);
if (err != -EINVAL)
return err;
wdev = NULL;
} else if (wdev->wiphy != &rdev->wiphy) {
return -EINVAL;
}
if (!info->attrs[NL80211_ATTR_TESTDATA])
return -EINVAL;
rdev->cur_cmd_info = info;
err = rdev_testmode_cmd(rdev, wdev,
nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
rdev->cur_cmd_info = NULL;
return err;
}
static int nl80211_testmode_dump(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct cfg80211_registered_device *rdev;
struct nlattr **attrbuf = NULL;
int err;
long phy_idx;
void *data = NULL;
int data_len = 0;
rtnl_lock();
if (cb->args[0]) {
/*
* 0 is a valid index, but not valid for args[0],
* so we need to offset by 1.
*/
phy_idx = cb->args[0] - 1;
rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
if (!rdev) {
err = -ENOENT;
goto out_err;
}
} else {
attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
GFP_KERNEL);
if (!attrbuf) {
err = -ENOMEM;
goto out_err;
}
err = nlmsg_parse_deprecated(cb->nlh,
GENL_HDRLEN + nl80211_fam.hdrsize,
attrbuf, nl80211_fam.maxattr,
nl80211_policy, NULL);
if (err)
goto out_err;
rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
if (IS_ERR(rdev)) {
err = PTR_ERR(rdev);
goto out_err;
}
phy_idx = rdev->wiphy_idx;
if (attrbuf[NL80211_ATTR_TESTDATA])
cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
}
if (cb->args[1]) {
data = nla_data((void *)cb->args[1]);
data_len = nla_len((void *)cb->args[1]);
}
if (!rdev->ops->testmode_dump) {
err = -EOPNOTSUPP;
goto out_err;
}
while (1) {
void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
NL80211_CMD_TESTMODE);
struct nlattr *tmdata;
if (!hdr)
break;
if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
genlmsg_cancel(skb, hdr);
break;
}
tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
if (!tmdata) {
genlmsg_cancel(skb, hdr);
break;
}
err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
nla_nest_end(skb, tmdata);
if (err == -ENOBUFS || err == -ENOENT) {
genlmsg_cancel(skb, hdr);
break;
} else if (err) {
genlmsg_cancel(skb, hdr);
goto out_err;
}
genlmsg_end(skb, hdr);
}
err = skb->len;
/* see above */
cb->args[0] = phy_idx + 1;
out_err:
kfree(attrbuf);
rtnl_unlock();
return err;
}
#endif
static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct cfg80211_connect_params connect;
struct wiphy *wiphy;
struct cfg80211_cached_keys *connkeys = NULL;
u32 freq = 0;
int err;
memset(&connect, 0, sizeof(connect));
if (!info->attrs[NL80211_ATTR_SSID] ||
!nla_len(info->attrs[NL80211_ATTR_SSID]))
return -EINVAL;
if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
connect.auth_type =
nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
if (!nl80211_valid_auth_type(rdev, connect.auth_type,
NL80211_CMD_CONNECT))
return -EINVAL;
} else
connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
return -EINVAL;
connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
err = nl80211_crypto_settings(rdev, info, &connect.crypto,
NL80211_MAX_NR_CIPHER_SUITES);
if (err)
return err;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
wiphy = &rdev->wiphy;
connect.bg_scan_period = -1;
if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
(wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
connect.bg_scan_period =
nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
}
if (info->attrs[NL80211_ATTR_MAC])
connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
else if (info->attrs[NL80211_ATTR_MAC_HINT])
connect.bssid_hint =
nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
if (info->attrs[NL80211_ATTR_IE]) {
connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
}
if (info->attrs[NL80211_ATTR_USE_MFP]) {
connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
if (connect.mfp == NL80211_MFP_OPTIONAL &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_MFP_OPTIONAL))
return -EOPNOTSUPP;
} else {
connect.mfp = NL80211_MFP_NO;
}
if (info->attrs[NL80211_ATTR_PREV_BSSID])
connect.prev_bssid =
nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
freq = MHZ_TO_KHZ(nla_get_u32(
info->attrs[NL80211_ATTR_WIPHY_FREQ]));
if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
freq +=
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
if (freq) {
connect.channel = nl80211_get_valid_chan(wiphy, freq);
if (!connect.channel)
return -EINVAL;
} else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
freq = MHZ_TO_KHZ(freq);
connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
if (!connect.channel_hint)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
connect.edmg.channels =
nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
connect.edmg.bw_config =
nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
}
if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
connkeys = nl80211_parse_connkeys(rdev, info, NULL);
if (IS_ERR(connkeys))
return PTR_ERR(connkeys);
}
if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
connect.flags |= ASSOC_REQ_DISABLE_HT;
if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
memcpy(&connect.ht_capa_mask,
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
sizeof(connect.ht_capa_mask));
if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
kfree_sensitive(connkeys);
return -EINVAL;
}
memcpy(&connect.ht_capa,
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
sizeof(connect.ht_capa));
}
if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
connect.flags |= ASSOC_REQ_DISABLE_VHT;
if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
connect.flags |= ASSOC_REQ_DISABLE_HE;
if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
connect.flags |= ASSOC_REQ_DISABLE_EHT;
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
memcpy(&connect.vht_capa_mask,
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
sizeof(connect.vht_capa_mask));
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
kfree_sensitive(connkeys);
return -EINVAL;
}
memcpy(&connect.vht_capa,
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
sizeof(connect.vht_capa));
}
if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
if (!((rdev->wiphy.features &
NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
(rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_RRM)) {
kfree_sensitive(connkeys);
return -EINVAL;
}
connect.flags |= ASSOC_REQ_USE_RRM;
}
connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
kfree_sensitive(connkeys);
return -EOPNOTSUPP;
}
if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
/* bss selection makes no sense if bssid is set */
if (connect.bssid) {
kfree_sensitive(connkeys);
return -EINVAL;
}
err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
wiphy, &connect.bss_select);
if (err) {
kfree_sensitive(connkeys);
return err;
}
}
if (wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
connect.fils_erp_username =
nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
connect.fils_erp_username_len =
nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
connect.fils_erp_realm =
nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
connect.fils_erp_realm_len =
nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
connect.fils_erp_next_seq_num =
nla_get_u16(
info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
connect.fils_erp_rrk =
nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
connect.fils_erp_rrk_len =
nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
} else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
kfree_sensitive(connkeys);
return -EINVAL;
}
if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
kfree_sensitive(connkeys);
GENL_SET_ERR_MSG(info,
"external auth requires connection ownership");
return -EINVAL;
}
connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
}
if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
connect.flags |= CONNECT_REQ_MLO_SUPPORT;
wdev_lock(dev->ieee80211_ptr);
err = cfg80211_connect(rdev, dev, &connect, connkeys,
connect.prev_bssid);
if (err)
kfree_sensitive(connkeys);
if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
if (connect.bssid)
memcpy(dev->ieee80211_ptr->disconnect_bssid,
connect.bssid, ETH_ALEN);
else
eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
}
wdev_unlock(dev->ieee80211_ptr);
return err;
}
static int nl80211_update_connect_params(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_connect_params connect = {};
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
bool fils_sk_offload;
u32 auth_type;
u32 changed = 0;
int ret;
if (!rdev->ops->update_connect_params)
return -EOPNOTSUPP;
if (info->attrs[NL80211_ATTR_IE]) {
connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
changed |= UPDATE_ASSOC_IES;
}
fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
/*
* when driver supports fils-sk offload all attributes must be
* provided. So the else covers "fils-sk-not-all" and
* "no-fils-sk-any".
*/
if (fils_sk_offload &&
info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
connect.fils_erp_username =
nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
connect.fils_erp_username_len =
nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
connect.fils_erp_realm =
nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
connect.fils_erp_realm_len =
nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
connect.fils_erp_next_seq_num =
nla_get_u16(
info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
connect.fils_erp_rrk =
nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
connect.fils_erp_rrk_len =
nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
changed |= UPDATE_FILS_ERP_INFO;
} else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
if (!nl80211_valid_auth_type(rdev, auth_type,
NL80211_CMD_CONNECT))
return -EINVAL;
if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
return -EINVAL;
connect.auth_type = auth_type;
changed |= UPDATE_AUTH_TYPE;
}
wdev_lock(dev->ieee80211_ptr);
if (!wdev->connected)
ret = -ENOLINK;
else
ret = rdev_update_connect_params(rdev, dev, &connect, changed);
wdev_unlock(dev->ieee80211_ptr);
return ret;
}
static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
u16 reason;
int ret;
if (dev->ieee80211_ptr->conn_owner_nlportid &&
dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
return -EPERM;
if (!info->attrs[NL80211_ATTR_REASON_CODE])
reason = WLAN_REASON_DEAUTH_LEAVING;
else
reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
if (reason == 0)
return -EINVAL;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
wdev_lock(dev->ieee80211_ptr);
ret = cfg80211_disconnect(rdev, dev, reason, true);
wdev_unlock(dev->ieee80211_ptr);
return ret;
}
static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net *net;
int err;
if (info->attrs[NL80211_ATTR_PID]) {
u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
net = get_net_ns_by_pid(pid);
} else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
net = get_net_ns_by_fd(fd);
} else {
return -EINVAL;
}
if (IS_ERR(net))
return PTR_ERR(net);
err = 0;
/* check if anything to do */
if (!net_eq(wiphy_net(&rdev->wiphy), net))
err = cfg80211_switch_netns(rdev, net);
put_net(net);
return err;
}
static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_pmksa *pmksa) = NULL;
struct net_device *dev = info->user_ptr[1];
struct cfg80211_pmksa pmksa;
memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
if (!info->attrs[NL80211_ATTR_PMKID])
return -EINVAL;
pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
if (info->attrs[NL80211_ATTR_MAC]) {
pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
} else if (info->attrs[NL80211_ATTR_SSID] &&
info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
(info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
info->attrs[NL80211_ATTR_PMK])) {
pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
pmksa.cache_id =
nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
} else {
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_PMK]) {
pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
}
if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
pmksa.pmk_lifetime =
nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
pmksa.pmk_reauth_threshold =
nla_get_u8(
info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
!(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
return -EOPNOTSUPP;
switch (info->genlhdr->cmd) {
case NL80211_CMD_SET_PMKSA:
rdev_ops = rdev->ops->set_pmksa;
break;
case NL80211_CMD_DEL_PMKSA:
rdev_ops = rdev->ops->del_pmksa;
break;
default:
WARN_ON(1);
break;
}
if (!rdev_ops)
return -EOPNOTSUPP;
return rdev_ops(&rdev->wiphy, dev, &pmksa);
}
static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
if (!rdev->ops->flush_pmksa)
return -EOPNOTSUPP;
return rdev_flush_pmksa(rdev, dev);
}
static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
u8 action_code, dialog_token;
u32 peer_capability = 0;
u16 status_code;
u8 *peer;
int link_id;
bool initiator;
if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
!rdev->ops->tdls_mgmt)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
!info->attrs[NL80211_ATTR_STATUS_CODE] ||
!info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
!info->attrs[NL80211_ATTR_IE] ||
!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
peer_capability =
nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
link_id = nl80211_link_id_or_invalid(info->attrs);
return rdev_tdls_mgmt(rdev, dev, peer, link_id, action_code,
dialog_token, status_code, peer_capability,
initiator,
nla_data(info->attrs[NL80211_ATTR_IE]),
nla_len(info->attrs[NL80211_ATTR_IE]));
}
static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
enum nl80211_tdls_operation operation;
u8 *peer;
if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
!rdev->ops->tdls_oper)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
return rdev_tdls_oper(rdev, dev, peer, operation);
}
static int nl80211_remain_on_channel(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
unsigned int link_id = nl80211_link_id(info->attrs);
struct wireless_dev *wdev = info->user_ptr[1];
struct cfg80211_chan_def chandef;
struct sk_buff *msg;
void *hdr;
u64 cookie;
u32 duration;
int err;
if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
!info->attrs[NL80211_ATTR_DURATION])
return -EINVAL;
duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
if (!rdev->ops->remain_on_channel ||
!(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
return -EOPNOTSUPP;
/*
* We should be on that channel for at least a minimum amount of
* time (10ms) but no longer than the driver supports.
*/
if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
duration > rdev->wiphy.max_remain_on_channel_duration)
return -EINVAL;
err = nl80211_parse_chandef(rdev, info, &chandef);
if (err)
return err;
wdev_lock(wdev);
if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
oper_chandef = wdev_chandef(wdev, link_id);
if (WARN_ON(!oper_chandef)) {
/* cannot happen since we must beacon to get here */
WARN_ON(1);
wdev_unlock(wdev);
return -EBUSY;
}
/* note: returns first one if identical chandefs */
compat_chandef = cfg80211_chandef_compatible(&chandef,
oper_chandef);
if (compat_chandef != &chandef) {
wdev_unlock(wdev);
return -EBUSY;
}
}
wdev_unlock(wdev);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_REMAIN_ON_CHANNEL);
if (!hdr) {
err = -ENOBUFS;
goto free_msg;
}
err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
duration, &cookie);
if (err)
goto free_msg;
if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
NL80211_ATTR_PAD))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
return err;
}
static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
u64 cookie;
if (!info->attrs[NL80211_ATTR_COOKIE])
return -EINVAL;
if (!rdev->ops->cancel_remain_on_channel)
return -EOPNOTSUPP;
cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
}
static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_bitrate_mask mask;
unsigned int link_id = nl80211_link_id(info->attrs);
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
int err;
if (!rdev->ops->set_bitrate_mask)
return -EOPNOTSUPP;
wdev_lock(wdev);
err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
NL80211_ATTR_TX_RATES, &mask,
dev, true, link_id);
if (err)
goto out;
err = rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
out:
wdev_unlock(wdev);
return err;
}
static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
return -EINVAL;
if (info->attrs[NL80211_ATTR_FRAME_TYPE])
frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
switch (wdev->iftype) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_MESH_POINT:
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_P2P_DEVICE:
break;
case NL80211_IFTYPE_NAN:
if (!wiphy_ext_feature_isset(wdev->wiphy,
NL80211_EXT_FEATURE_SECURE_NAN))
return -EOPNOTSUPP;
break;
default:
return -EOPNOTSUPP;
}
/* not much point in registering if we can't reply */
if (!rdev->ops->mgmt_tx)
return -EOPNOTSUPP;
if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
GENL_SET_ERR_MSG(info,
"multicast RX registrations are not supported");
return -EOPNOTSUPP;
}
return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
info->extack);
}
static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
struct cfg80211_chan_def chandef;
int err;
void *hdr = NULL;
u64 cookie;
struct sk_buff *msg = NULL;
struct cfg80211_mgmt_tx_params params = {
.dont_wait_for_ack =
info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
};
if (!info->attrs[NL80211_ATTR_FRAME])
return -EINVAL;
if (!rdev->ops->mgmt_tx)
return -EOPNOTSUPP;
switch (wdev->iftype) {
case NL80211_IFTYPE_P2P_DEVICE:
if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
return -EINVAL;
break;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_MESH_POINT:
case NL80211_IFTYPE_P2P_GO:
break;
case NL80211_IFTYPE_NAN:
if (!wiphy_ext_feature_isset(wdev->wiphy,
NL80211_EXT_FEATURE_SECURE_NAN))
return -EOPNOTSUPP;
break;
default:
return -EOPNOTSUPP;
}
if (info->attrs[NL80211_ATTR_DURATION]) {
if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
return -EINVAL;
params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
/*
* We should wait on the channel for at least a minimum amount
* of time (10ms) but no longer than the driver supports.
*/
if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
params.wait > rdev->wiphy.max_remain_on_channel_duration)
return -EINVAL;
}
params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
return -EINVAL;
params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
/* get the channel if any has been specified, otherwise pass NULL to
* the driver. The latter will use the current one
*/
chandef.chan = NULL;
if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
err = nl80211_parse_chandef(rdev, info, &chandef);
if (err)
return err;
}
if (!chandef.chan && params.offchan)
return -EINVAL;
wdev_lock(wdev);
if (params.offchan &&
!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
wdev_unlock(wdev);
return -EBUSY;
}
params.link_id = nl80211_link_id_or_invalid(info->attrs);
/*
* This now races due to the unlock, but we cannot check
* the valid links for the _station_ anyway, so that's up
* to the driver.
*/
if (params.link_id >= 0 &&
!(wdev->valid_links & BIT(params.link_id))) {
wdev_unlock(wdev);
return -EINVAL;
}
wdev_unlock(wdev);
params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
int i;
if (len % sizeof(u16))
return -EINVAL;
params.n_csa_offsets = len / sizeof(u16);
params.csa_offsets =
nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
/* check that all the offsets fit the frame */
for (i = 0; i < params.n_csa_offsets; i++) {
if (params.csa_offsets[i] >= params.len)
return -EINVAL;
}
}
if (!params.dont_wait_for_ack) {
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_FRAME);
if (!hdr) {
err = -ENOBUFS;
goto free_msg;
}
}
params.chan = chandef.chan;
err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
if (err)
goto free_msg;
if (msg) {
if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
NL80211_ATTR_PAD))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
}
return 0;
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
return err;
}
static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
u64 cookie;
if (!info->attrs[NL80211_ATTR_COOKIE])
return -EINVAL;
if (!rdev->ops->mgmt_tx_cancel_wait)
return -EOPNOTSUPP;
switch (wdev->iftype) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_P2P_DEVICE:
break;
case NL80211_IFTYPE_NAN:
if (!wiphy_ext_feature_isset(wdev->wiphy,
NL80211_EXT_FEATURE_SECURE_NAN))
return -EOPNOTSUPP;
break;
default:
return -EOPNOTSUPP;
}
cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
}
static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev;
struct net_device *dev = info->user_ptr[1];
u8 ps_state;
bool state;
int err;
if (!info->attrs[NL80211_ATTR_PS_STATE])
return -EINVAL;
ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
wdev = dev->ieee80211_ptr;
if (!rdev->ops->set_power_mgmt)
return -EOPNOTSUPP;
state = (ps_state == NL80211_PS_ENABLED) ? true : false;
if (state == wdev->ps)
return 0;
err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
if (!err)
wdev->ps = state;
return err;
}
static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
enum nl80211_ps_state ps_state;
struct wireless_dev *wdev;
struct net_device *dev = info->user_ptr[1];
struct sk_buff *msg;
void *hdr;
int err;
wdev = dev->ieee80211_ptr;
if (!rdev->ops->set_power_mgmt)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_GET_POWER_SAVE);
if (!hdr) {
err = -ENOBUFS;
goto free_msg;
}
if (wdev->ps)
ps_state = NL80211_PS_ENABLED;
else
ps_state = NL80211_PS_DISABLED;
if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
return err;
}
static const struct nla_policy
nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
[NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
[NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
[NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
[NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
[NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
[NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
};
static int nl80211_set_cqm_txe(struct genl_info *info,
u32 rate, u32 pkts, u32 intvl)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
return -EINVAL;
if (!rdev->ops->set_cqm_txe_config)
return -EOPNOTSUPP;
if (wdev->iftype != NL80211_IFTYPE_STATION &&
wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
}
static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
struct net_device *dev,
struct cfg80211_cqm_config *cqm_config)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
s32 last, low, high;
u32 hyst;
int i, n, low_index;
int err;
/* RSSI reporting disabled? */
if (!cqm_config)
return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
/*
* Obtain current RSSI value if possible, if not and no RSSI threshold
* event has been received yet, we should receive an event after a
* connection is established and enough beacons received to calculate
* the average.
*/
if (!cqm_config->last_rssi_event_value &&
wdev->links[0].client.current_bss &&
rdev->ops->get_station) {
struct station_info sinfo = {};
u8 *mac_addr;
mac_addr = wdev->links[0].client.current_bss->pub.bssid;
err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
if (err)
return err;
cfg80211_sinfo_release_content(&sinfo);
if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
cqm_config->last_rssi_event_value =
(s8) sinfo.rx_beacon_signal_avg;
}
last = cqm_config->last_rssi_event_value;
hyst = cqm_config->rssi_hyst;
n = cqm_config->n_rssi_thresholds;
for (i = 0; i < n; i++) {
i = array_index_nospec(i, n);
if (last < cqm_config->rssi_thresholds[i])
break;
}
low_index = i - 1;
if (low_index >= 0) {
low_index = array_index_nospec(low_index, n);
low = cqm_config->rssi_thresholds[low_index] - hyst;
} else {
low = S32_MIN;
}
if (i < n) {
i = array_index_nospec(i, n);
high = cqm_config->rssi_thresholds[i] + hyst - 1;
} else {
high = S32_MAX;
}
return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
}
static int nl80211_set_cqm_rssi(struct genl_info *info,
const s32 *thresholds, int n_thresholds,
u32 hysteresis)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct cfg80211_cqm_config *cqm_config = NULL, *old;
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
int i, err;
s32 prev = S32_MIN;
/* Check all values negative and sorted */
for (i = 0; i < n_thresholds; i++) {
if (thresholds[i] > 0 || thresholds[i] <= prev)
return -EINVAL;
prev = thresholds[i];
}
if (wdev->iftype != NL80211_IFTYPE_STATION &&
wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
return rdev_set_cqm_rssi_config(rdev, dev,
thresholds[0], hysteresis);
}
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_CQM_RSSI_LIST))
return -EOPNOTSUPP;
if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
n_thresholds = 0;
wdev_lock(wdev);
old = rcu_dereference_protected(wdev->cqm_config,
lockdep_is_held(&wdev->mtx));
if (n_thresholds) {
cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
n_thresholds),
GFP_KERNEL);
if (!cqm_config) {
err = -ENOMEM;
goto unlock;
}
cqm_config->rssi_hyst = hysteresis;
cqm_config->n_rssi_thresholds = n_thresholds;
memcpy(cqm_config->rssi_thresholds, thresholds,
flex_array_size(cqm_config, rssi_thresholds,
n_thresholds));
rcu_assign_pointer(wdev->cqm_config, cqm_config);
} else {
RCU_INIT_POINTER(wdev->cqm_config, NULL);
}
err = cfg80211_cqm_rssi_update(rdev, dev, cqm_config);
if (err) {
rcu_assign_pointer(wdev->cqm_config, old);
kfree_rcu(cqm_config, rcu_head);
} else {
kfree_rcu(old, rcu_head);
}
unlock:
wdev_unlock(wdev);
return err;
}
static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
{
struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
struct nlattr *cqm;
int err;
cqm = info->attrs[NL80211_ATTR_CQM];
if (!cqm)
return -EINVAL;
err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
nl80211_attr_cqm_policy,
info->extack);
if (err)
return err;
if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
const s32 *thresholds =
nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
if (len % 4)
return -EINVAL;
return nl80211_set_cqm_rssi(info, thresholds, len / 4,
hysteresis);
}
if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
return nl80211_set_cqm_txe(info, rate, pkts, intvl);
}
return -EINVAL;
}
static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct ocb_setup setup = {};
int err;
err = nl80211_parse_chandef(rdev, info, &setup.chandef);
if (err)
return err;
return cfg80211_join_ocb(rdev, dev, &setup);
}
static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
return cfg80211_leave_ocb(rdev, dev);
}
static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct mesh_config cfg;
struct mesh_setup setup;
int err;
/* start with default */
memcpy(&cfg, &default_mesh_config, sizeof(cfg));
memcpy(&setup, &default_mesh_setup, sizeof(setup));
if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
/* and parse parameters if given */
err = nl80211_parse_mesh_config(info, &cfg, NULL);
if (err)
return err;
}
if (!info->attrs[NL80211_ATTR_MESH_ID] ||
!nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
return -EINVAL;
setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
!nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
return -EINVAL;
if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
setup.beacon_interval =
nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
err = cfg80211_validate_beacon_int(rdev,
NL80211_IFTYPE_MESH_POINT,
setup.beacon_interval);
if (err)
return err;
}
if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
setup.dtim_period =
nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
if (setup.dtim_period < 1 || setup.dtim_period > 100)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
/* parse additional setup parameters if given */
err = nl80211_parse_mesh_setup(info, &setup);
if (err)
return err;
}
if (setup.user_mpm)
cfg.auto_open_plinks = false;
if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
err = nl80211_parse_chandef(rdev, info, &setup.chandef);
if (err)
return err;
} else {
/* __cfg80211_join_mesh() will sort it out */
setup.chandef.chan = NULL;
}
if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
int n_rates =
nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
struct ieee80211_supported_band *sband;
if (!setup.chandef.chan)
return -EINVAL;
sband = rdev->wiphy.bands[setup.chandef.chan->band];
err = ieee80211_get_ratemask(sband, rates, n_rates,
&setup.basic_rates);
if (err)
return err;
}
if (info->attrs[NL80211_ATTR_TX_RATES]) {
err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
NL80211_ATTR_TX_RATES,
&setup.beacon_rate,
dev, false, 0);
if (err)
return err;
if (!setup.chandef.chan)
return -EINVAL;
err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
&setup.beacon_rate);
if (err)
return err;
}
setup.userspace_handles_dfs =
nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
int r = validate_pae_over_nl80211(rdev, info);
if (r < 0)
return r;
setup.control_port_over_nl80211 = true;
}
wdev_lock(dev->ieee80211_ptr);
err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
wdev_unlock(dev->ieee80211_ptr);
return err;
}
static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
return cfg80211_leave_mesh(rdev, dev);
}
#ifdef CONFIG_PM
static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
struct cfg80211_registered_device *rdev)
{
struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
struct nlattr *nl_pats, *nl_pat;
int i, pat_len;
if (!wowlan->n_patterns)
return 0;
nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
if (!nl_pats)
return -ENOBUFS;
for (i = 0; i < wowlan->n_patterns; i++) {
nl_pat = nla_nest_start_noflag(msg, i + 1);
if (!nl_pat)
return -ENOBUFS;
pat_len = wowlan->patterns[i].pattern_len;
if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
wowlan->patterns[i].mask) ||
nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
wowlan->patterns[i].pattern) ||
nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
wowlan->patterns[i].pkt_offset))
return -ENOBUFS;
nla_nest_end(msg, nl_pat);
}
nla_nest_end(msg, nl_pats);
return 0;
}
static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
struct cfg80211_wowlan_tcp *tcp)
{
struct nlattr *nl_tcp;
if (!tcp)
return 0;
nl_tcp = nla_nest_start_noflag(msg,
NL80211_WOWLAN_TRIG_TCP_CONNECTION);
if (!nl_tcp)
return -ENOBUFS;
if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
tcp->payload_len, tcp->payload) ||
nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
tcp->data_interval) ||
nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
tcp->wake_len, tcp->wake_data) ||
nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
return -ENOBUFS;
if (tcp->payload_seq.len &&
nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
sizeof(tcp->payload_seq), &tcp->payload_seq))
return -ENOBUFS;
if (tcp->payload_tok.len &&
nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
sizeof(tcp->payload_tok) + tcp->tokens_size,
&tcp->payload_tok))
return -ENOBUFS;
nla_nest_end(msg, nl_tcp);
return 0;
}
static int nl80211_send_wowlan_nd(struct sk_buff *msg,
struct cfg80211_sched_scan_request *req)
{
struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
int i;
if (!req)
return 0;
nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
if (!nd)
return -ENOBUFS;
if (req->n_scan_plans == 1 &&
nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
req->scan_plans[0].interval * 1000))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
return -ENOBUFS;
if (req->relative_rssi_set) {
struct nl80211_bss_select_rssi_adjust rssi_adjust;
if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
req->relative_rssi))
return -ENOBUFS;
rssi_adjust.band = req->rssi_adjust.band;
rssi_adjust.delta = req->rssi_adjust.delta;
if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
sizeof(rssi_adjust), &rssi_adjust))
return -ENOBUFS;
}
freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
if (!freqs)
return -ENOBUFS;
for (i = 0; i < req->n_channels; i++) {
if (nla_put_u32(msg, i, req->channels[i]->center_freq))
return -ENOBUFS;
}
nla_nest_end(msg, freqs);
if (req->n_match_sets) {
matches = nla_nest_start_noflag(msg,
NL80211_ATTR_SCHED_SCAN_MATCH);
if (!matches)
return -ENOBUFS;
for (i = 0; i < req->n_match_sets; i++) {
match = nla_nest_start_noflag(msg, i);
if (!match)
return -ENOBUFS;
if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
req->match_sets[i].ssid.ssid_len,
req->match_sets[i].ssid.ssid))
return -ENOBUFS;
nla_nest_end(msg, match);
}
nla_nest_end(msg, matches);
}
scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
if (!scan_plans)
return -ENOBUFS;
for (i = 0; i < req->n_scan_plans; i++) {
scan_plan = nla_nest_start_noflag(msg, i + 1);
if (!scan_plan)
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
req->scan_plans[i].interval) ||
(req->scan_plans[i].iterations &&
nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
req->scan_plans[i].iterations)))
return -ENOBUFS;
nla_nest_end(msg, scan_plan);
}
nla_nest_end(msg, scan_plans);
nla_nest_end(msg, nd);
return 0;
}
static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct sk_buff *msg;
void *hdr;
u32 size = NLMSG_DEFAULT_SIZE;
if (!rdev->wiphy.wowlan)
return -EOPNOTSUPP;
if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
/* adjust size to have room for all the data */
size += rdev->wiphy.wowlan_config->tcp->tokens_size +
rdev->wiphy.wowlan_config->tcp->payload_len +
rdev->wiphy.wowlan_config->tcp->wake_len +
rdev->wiphy.wowlan_config->tcp->wake_len / 8;
}
msg = nlmsg_new(size, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_GET_WOWLAN);
if (!hdr)
goto nla_put_failure;
if (rdev->wiphy.wowlan_config) {
struct nlattr *nl_wowlan;
nl_wowlan = nla_nest_start_noflag(msg,
NL80211_ATTR_WOWLAN_TRIGGERS);
if (!nl_wowlan)
goto nla_put_failure;
if ((rdev->wiphy.wowlan_config->any &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
(rdev->wiphy.wowlan_config->disconnect &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
(rdev->wiphy.wowlan_config->magic_pkt &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
(rdev->wiphy.wowlan_config->gtk_rekey_failure &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
(rdev->wiphy.wowlan_config->eap_identity_req &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
(rdev->wiphy.wowlan_config->four_way_handshake &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
(rdev->wiphy.wowlan_config->rfkill_release &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
goto nla_put_failure;
if (nl80211_send_wowlan_patterns(msg, rdev))
goto nla_put_failure;
if (nl80211_send_wowlan_tcp(msg,
rdev->wiphy.wowlan_config->tcp))
goto nla_put_failure;
if (nl80211_send_wowlan_nd(
msg,
rdev->wiphy.wowlan_config->nd_config))
goto nla_put_failure;
nla_nest_end(msg, nl_wowlan);
}
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
nlmsg_free(msg);
return -ENOBUFS;
}
static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
struct nlattr *attr,
struct cfg80211_wowlan *trig)
{
struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
struct cfg80211_wowlan_tcp *cfg;
struct nl80211_wowlan_tcp_data_token *tok = NULL;
struct nl80211_wowlan_tcp_data_seq *seq = NULL;
u32 size;
u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
int err, port;
if (!rdev->wiphy.wowlan->tcp)
return -EINVAL;
err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
nl80211_wowlan_tcp_policy, NULL);
if (err)
return err;
if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
!tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
!tb[NL80211_WOWLAN_TCP_DST_MAC] ||
!tb[NL80211_WOWLAN_TCP_DST_PORT] ||
!tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
!tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
!tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
!tb[NL80211_WOWLAN_TCP_WAKE_MASK])
return -EINVAL;
data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
return -EINVAL;
if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
rdev->wiphy.wowlan->tcp->data_interval_max ||
nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
return -EINVAL;
wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
return -EINVAL;
wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
return -EINVAL;
if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
tokens_size = tokln - sizeof(*tok);
if (!tok->len || tokens_size % tok->len)
return -EINVAL;
if (!rdev->wiphy.wowlan->tcp->tok)
return -EINVAL;
if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
return -EINVAL;
if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
return -EINVAL;
if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
return -EINVAL;
if (tok->offset + tok->len > data_size)
return -EINVAL;
}
if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
if (!rdev->wiphy.wowlan->tcp->seq)
return -EINVAL;
if (seq->len == 0 || seq->len > 4)
return -EINVAL;
if (seq->len + seq->offset > data_size)
return -EINVAL;
}
size = sizeof(*cfg);
size += data_size;
size += wake_size + wake_mask_size;
size += tokens_size;
cfg = kzalloc(size, GFP_KERNEL);
if (!cfg)
return -ENOMEM;
cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
ETH_ALEN);
if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
else
port = 0;
#ifdef CONFIG_INET
/* allocate a socket and port for it and use it */
err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
IPPROTO_TCP, &cfg->sock, 1);
if (err) {
kfree(cfg);
return err;
}
if (inet_csk_get_port(cfg->sock->sk, port)) {
sock_release(cfg->sock);
kfree(cfg);
return -EADDRINUSE;
}
cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
#else
if (!port) {
kfree(cfg);
return -EINVAL;
}
cfg->src_port = port;
#endif
cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
cfg->payload_len = data_size;
cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
memcpy((void *)cfg->payload,
nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
data_size);
if (seq)
cfg->payload_seq = *seq;
cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
cfg->wake_len = wake_size;
cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
memcpy((void *)cfg->wake_data,
nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
wake_size);
cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
data_size + wake_size;
memcpy((void *)cfg->wake_mask,
nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
wake_mask_size);
if (tok) {
cfg->tokens_size = tokens_size;
cfg->payload_tok = *tok;
memcpy(cfg->payload_tok.token_stream, tok->token_stream,
tokens_size);
}
trig->tcp = cfg;
return 0;
}
static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
const struct wiphy_wowlan_support *wowlan,
struct nlattr *attr,
struct cfg80211_wowlan *trig)
{
struct nlattr **tb;
int err;
tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
if (!tb)
return -ENOMEM;
if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
err = -EOPNOTSUPP;
goto out;
}
err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
nl80211_policy, NULL);
if (err)
goto out;
trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
wowlan->max_nd_match_sets);
err = PTR_ERR_OR_ZERO(trig->nd_config);
if (err)
trig->nd_config = NULL;
out:
kfree(tb);
return err;
}
static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
struct cfg80211_wowlan new_triggers = {};
struct cfg80211_wowlan *ntrig;
const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
int err, i;
bool prev_enabled = rdev->wiphy.wowlan_config;
bool regular = false;
if (!wowlan)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
cfg80211_rdev_free_wowlan(rdev);
rdev->wiphy.wowlan_config = NULL;
goto set_wakeup;
}
err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
nl80211_wowlan_policy, info->extack);
if (err)
return err;
if (tb[NL80211_WOWLAN_TRIG_ANY]) {
if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
return -EINVAL;
new_triggers.any = true;
}
if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
return -EINVAL;
new_triggers.disconnect = true;
regular = true;
}
if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
return -EINVAL;
new_triggers.magic_pkt = true;
regular = true;
}
if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
return -EINVAL;
if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
return -EINVAL;
new_triggers.gtk_rekey_failure = true;
regular = true;
}
if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
return -EINVAL;
new_triggers.eap_identity_req = true;
regular = true;
}
if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
return -EINVAL;
new_triggers.four_way_handshake = true;
regular = true;
}
if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
return -EINVAL;
new_triggers.rfkill_release = true;
regular = true;
}
if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
struct nlattr *pat;
int n_patterns = 0;
int rem, pat_len, mask_len, pkt_offset;
struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
regular = true;
nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
rem)
n_patterns++;
if (n_patterns > wowlan->n_patterns)
return -EINVAL;
new_triggers.patterns = kcalloc(n_patterns,
sizeof(new_triggers.patterns[0]),
GFP_KERNEL);
if (!new_triggers.patterns)
return -ENOMEM;
new_triggers.n_patterns = n_patterns;
i = 0;
nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
rem) {
u8 *mask_pat;
err = nla_parse_nested_deprecated(pat_tb,
MAX_NL80211_PKTPAT,
pat,
nl80211_packet_pattern_policy,
info->extack);
if (err)
goto error;
err = -EINVAL;
if (!pat_tb[NL80211_PKTPAT_MASK] ||
!pat_tb[NL80211_PKTPAT_PATTERN])
goto error;
pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
mask_len = DIV_ROUND_UP(pat_len, 8);
if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
goto error;
if (pat_len > wowlan->pattern_max_len ||
pat_len < wowlan->pattern_min_len)
goto error;
if (!pat_tb[NL80211_PKTPAT_OFFSET])
pkt_offset = 0;
else
pkt_offset = nla_get_u32(
pat_tb[NL80211_PKTPAT_OFFSET]);
if (pkt_offset > wowlan->max_pkt_offset)
goto error;
new_triggers.patterns[i].pkt_offset = pkt_offset;
mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
if (!mask_pat) {
err = -ENOMEM;
goto error;
}
new_triggers.patterns[i].mask = mask_pat;
memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
mask_len);
mask_pat += mask_len;
new_triggers.patterns[i].pattern = mask_pat;
new_triggers.patterns[i].pattern_len = pat_len;
memcpy(mask_pat,
nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
pat_len);
i++;
}
}
if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
regular = true;
err = nl80211_parse_wowlan_tcp(
rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
&new_triggers);
if (err)
goto error;
}
if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
regular = true;
err = nl80211_parse_wowlan_nd(
rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
&new_triggers);
if (err)
goto error;
}
/* The 'any' trigger means the device continues operating more or less
* as in its normal operation mode and wakes up the host on most of the
* normal interrupts (like packet RX, ...)
* It therefore makes little sense to combine with the more constrained
* wakeup trigger modes.
*/
if (new_triggers.any && regular) {
err = -EINVAL;
goto error;
}
ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
if (!ntrig) {
err = -ENOMEM;
goto error;
}
cfg80211_rdev_free_wowlan(rdev);
rdev->wiphy.wowlan_config = ntrig;
set_wakeup:
if (rdev->ops->set_wakeup &&
prev_enabled != !!rdev->wiphy.wowlan_config)
rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
return 0;
error:
for (i = 0; i < new_triggers.n_patterns; i++)
kfree(new_triggers.patterns[i].mask);
kfree(new_triggers.patterns);
if (new_triggers.tcp && new_triggers.tcp->sock)
sock_release(new_triggers.tcp->sock);
kfree(new_triggers.tcp);
kfree(new_triggers.nd_config);
return err;
}
#endif
static int nl80211_send_coalesce_rules(struct sk_buff *msg,
struct cfg80211_registered_device *rdev)
{
struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
int i, j, pat_len;
struct cfg80211_coalesce_rules *rule;
if (!rdev->coalesce->n_rules)
return 0;
nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
if (!nl_rules)
return -ENOBUFS;
for (i = 0; i < rdev->coalesce->n_rules; i++) {
nl_rule = nla_nest_start_noflag(msg, i + 1);
if (!nl_rule)
return -ENOBUFS;
rule = &rdev->coalesce->rules[i];
if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
rule->delay))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
rule->condition))
return -ENOBUFS;
nl_pats = nla_nest_start_noflag(msg,
NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
if (!nl_pats)
return -ENOBUFS;
for (j = 0; j < rule->n_patterns; j++) {
nl_pat = nla_nest_start_noflag(msg, j + 1);
if (!nl_pat)
return -ENOBUFS;
pat_len = rule->patterns[j].pattern_len;
if (nla_put(msg, NL80211_PKTPAT_MASK,
DIV_ROUND_UP(pat_len, 8),
rule->patterns[j].mask) ||
nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
rule->patterns[j].pattern) ||
nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
rule->patterns[j].pkt_offset))
return -ENOBUFS;
nla_nest_end(msg, nl_pat);
}
nla_nest_end(msg, nl_pats);
nla_nest_end(msg, nl_rule);
}
nla_nest_end(msg, nl_rules);
return 0;
}
static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct sk_buff *msg;
void *hdr;
if (!rdev->wiphy.coalesce)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_GET_COALESCE);
if (!hdr)
goto nla_put_failure;
if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
nlmsg_free(msg);
return -ENOBUFS;
}
void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
{
struct cfg80211_coalesce *coalesce = rdev->coalesce;
int i, j;
struct cfg80211_coalesce_rules *rule;
if (!coalesce)
return;
for (i = 0; i < coalesce->n_rules; i++) {
rule = &coalesce->rules[i];
for (j = 0; j < rule->n_patterns; j++)
kfree(rule->patterns[j].mask);
kfree(rule->patterns);
}
kfree(coalesce->rules);
kfree(coalesce);
rdev->coalesce = NULL;
}
static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
struct nlattr *rule,
struct cfg80211_coalesce_rules *new_rule)
{
int err, i;
const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
rule, nl80211_coalesce_policy, NULL);
if (err)
return err;
if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
new_rule->delay =
nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
if (new_rule->delay > coalesce->max_delay)
return -EINVAL;
if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
new_rule->condition =
nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
return -EINVAL;
nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
rem)
n_patterns++;
if (n_patterns > coalesce->n_patterns)
return -EINVAL;
new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
GFP_KERNEL);
if (!new_rule->patterns)
return -ENOMEM;
new_rule->n_patterns = n_patterns;
i = 0;
nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
rem) {
u8 *mask_pat;
err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
pat,
nl80211_packet_pattern_policy,
NULL);
if (err)
return err;
if (!pat_tb[NL80211_PKTPAT_MASK] ||
!pat_tb[NL80211_PKTPAT_PATTERN])
return -EINVAL;
pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
mask_len = DIV_ROUND_UP(pat_len, 8);
if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
return -EINVAL;
if (pat_len > coalesce->pattern_max_len ||
pat_len < coalesce->pattern_min_len)
return -EINVAL;
if (!pat_tb[NL80211_PKTPAT_OFFSET])
pkt_offset = 0;
else
pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
if (pkt_offset > coalesce->max_pkt_offset)
return -EINVAL;
new_rule->patterns[i].pkt_offset = pkt_offset;
mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
if (!mask_pat)
return -ENOMEM;
new_rule->patterns[i].mask = mask_pat;
memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
mask_len);
mask_pat += mask_len;
new_rule->patterns[i].pattern = mask_pat;
new_rule->patterns[i].pattern_len = pat_len;
memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
pat_len);
i++;
}
return 0;
}
static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
struct cfg80211_coalesce new_coalesce = {};
struct cfg80211_coalesce *n_coalesce;
int err, rem_rule, n_rules = 0, i, j;
struct nlattr *rule;
struct cfg80211_coalesce_rules *tmp_rule;
if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
cfg80211_rdev_free_coalesce(rdev);
rdev_set_coalesce(rdev, NULL);
return 0;
}
nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
rem_rule)
n_rules++;
if (n_rules > coalesce->n_rules)
return -EINVAL;
new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
GFP_KERNEL);
if (!new_coalesce.rules)
return -ENOMEM;
new_coalesce.n_rules = n_rules;
i = 0;
nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
rem_rule) {
err = nl80211_parse_coalesce_rule(rdev, rule,
&new_coalesce.rules[i]);
if (err)
goto error;
i++;
}
err = rdev_set_coalesce(rdev, &new_coalesce);
if (err)
goto error;
n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
if (!n_coalesce) {
err = -ENOMEM;
goto error;
}
cfg80211_rdev_free_coalesce(rdev);
rdev->coalesce = n_coalesce;
return 0;
error:
for (i = 0; i < new_coalesce.n_rules; i++) {
tmp_rule = &new_coalesce.rules[i];
for (j = 0; j < tmp_rule->n_patterns; j++)
kfree(tmp_rule->patterns[j].mask);
kfree(tmp_rule->patterns);
}
kfree(new_coalesce.rules);
return err;
}
static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct nlattr *tb[NUM_NL80211_REKEY_DATA];
struct cfg80211_gtk_rekey_data rekey_data = {};
int err;
if (!info->attrs[NL80211_ATTR_REKEY_DATA])
return -EINVAL;
err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
info->attrs[NL80211_ATTR_REKEY_DATA],
nl80211_rekey_policy, info->extack);
if (err)
return err;
if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
!tb[NL80211_REKEY_DATA_KCK])
return -EINVAL;
if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
return -ERANGE;
if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN) &&
!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KCK_32 &&
nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN_32))
return -ERANGE;
rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
if (tb[NL80211_REKEY_DATA_AKM])
rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
wdev_lock(wdev);
if (!wdev->connected) {
err = -ENOTCONN;
goto out;
}
if (!rdev->ops->set_rekey_data) {
err = -EOPNOTSUPP;
goto out;
}
err = rdev_set_rekey_data(rdev, dev, &rekey_data);
out:
wdev_unlock(wdev);
return err;
}
static int nl80211_register_unexpected_frame(struct sk_buff *skb,
struct genl_info *info)
{
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
if (wdev->iftype != NL80211_IFTYPE_AP &&
wdev->iftype != NL80211_IFTYPE_P2P_GO)
return -EINVAL;
if (wdev->ap_unexpected_nlportid)
return -EBUSY;
wdev->ap_unexpected_nlportid = info->snd_portid;
return 0;
}
static int nl80211_probe_client(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct sk_buff *msg;
void *hdr;
const u8 *addr;
u64 cookie;
int err;
if (wdev->iftype != NL80211_IFTYPE_AP &&
wdev->iftype != NL80211_IFTYPE_P2P_GO)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!rdev->ops->probe_client)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_PROBE_CLIENT);
if (!hdr) {
err = -ENOBUFS;
goto free_msg;
}
addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
err = rdev_probe_client(rdev, dev, addr, &cookie);
if (err)
goto free_msg;
if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
NL80211_ATTR_PAD))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
return err;
}
static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct cfg80211_beacon_registration *reg, *nreg;
int rv;
if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
return -EOPNOTSUPP;
nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
if (!nreg)
return -ENOMEM;
/* First, check if already registered. */
spin_lock_bh(&rdev->beacon_registrations_lock);
list_for_each_entry(reg, &rdev->beacon_registrations, list) {
if (reg->nlportid == info->snd_portid) {
rv = -EALREADY;
goto out_err;
}
}
/* Add it to the list */
nreg->nlportid = info->snd_portid;
list_add(&nreg->list, &rdev->beacon_registrations);
spin_unlock_bh(&rdev->beacon_registrations_lock);
return 0;
out_err:
spin_unlock_bh(&rdev->beacon_registrations_lock);
kfree(nreg);
return rv;
}
static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
int err;
if (!rdev->ops->start_p2p_device)
return -EOPNOTSUPP;
if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
return -EOPNOTSUPP;
if (wdev_running(wdev))
return 0;
if (rfkill_blocked(rdev->wiphy.rfkill))
return -ERFKILL;
err = rdev_start_p2p_device(rdev, wdev);
if (err)
return err;
wdev->is_running = true;
rdev->opencount++;
return 0;
}
static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
return -EOPNOTSUPP;
if (!rdev->ops->stop_p2p_device)
return -EOPNOTSUPP;
cfg80211_stop_p2p_device(rdev, wdev);
return 0;
}
static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
struct cfg80211_nan_conf conf = {};
int err;
if (wdev->iftype != NL80211_IFTYPE_NAN)
return -EOPNOTSUPP;
if (wdev_running(wdev))
return -EEXIST;
if (rfkill_blocked(rdev->wiphy.rfkill))
return -ERFKILL;
if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
return -EINVAL;
conf.master_pref =
nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
if (info->attrs[NL80211_ATTR_BANDS]) {
u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
return -EOPNOTSUPP;
if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
return -EINVAL;
conf.bands = bands;
}
err = rdev_start_nan(rdev, wdev, &conf);
if (err)
return err;
wdev->is_running = true;
rdev->opencount++;
return 0;
}
static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
if (wdev->iftype != NL80211_IFTYPE_NAN)
return -EOPNOTSUPP;
cfg80211_stop_nan(rdev, wdev);
return 0;
}
static int validate_nan_filter(struct nlattr *filter_attr)
{
struct nlattr *attr;
int len = 0, n_entries = 0, rem;
nla_for_each_nested(attr, filter_attr, rem) {
len += nla_len(attr);
n_entries++;
}
if (len >= U8_MAX)
return -EINVAL;
return n_entries;
}
static int handle_nan_filter(struct nlattr *attr_filter,
struct cfg80211_nan_func *func,
bool tx)
{
struct nlattr *attr;
int n_entries, rem, i;
struct cfg80211_nan_func_filter *filter;
n_entries = validate_nan_filter(attr_filter);
if (n_entries < 0)
return n_entries;
BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
if (!filter)
return -ENOMEM;
i = 0;
nla_for_each_nested(attr, attr_filter, rem) {
filter[i].filter = nla_memdup(attr, GFP_KERNEL);
if (!filter[i].filter)
goto err;
filter[i].len = nla_len(attr);
i++;
}
if (tx) {
func->num_tx_filters = n_entries;
func->tx_filters = filter;
} else {
func->num_rx_filters = n_entries;
func->rx_filters = filter;
}
return 0;
err:
i = 0;
nla_for_each_nested(attr, attr_filter, rem) {
kfree(filter[i].filter);
i++;
}
kfree(filter);
return -ENOMEM;
}
static int nl80211_nan_add_func(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
struct cfg80211_nan_func *func;
struct sk_buff *msg = NULL;
void *hdr = NULL;
int err = 0;
if (wdev->iftype != NL80211_IFTYPE_NAN)
return -EOPNOTSUPP;
if (!wdev_running(wdev))
return -ENOTCONN;
if (!info->attrs[NL80211_ATTR_NAN_FUNC])
return -EINVAL;
err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
info->attrs[NL80211_ATTR_NAN_FUNC],
nl80211_nan_func_policy,
info->extack);
if (err)
return err;
func = kzalloc(sizeof(*func), GFP_KERNEL);
if (!func)
return -ENOMEM;
func->cookie = cfg80211_assign_cookie(rdev);
if (!tb[NL80211_NAN_FUNC_TYPE]) {
err = -EINVAL;
goto out;
}
func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
err = -EINVAL;
goto out;
}
memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
sizeof(func->service_id));
func->close_range =
nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
func->serv_spec_info_len =
nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
func->serv_spec_info =
kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
func->serv_spec_info_len,
GFP_KERNEL);
if (!func->serv_spec_info) {
err = -ENOMEM;
goto out;
}
}
if (tb[NL80211_NAN_FUNC_TTL])
func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
switch (func->type) {
case NL80211_NAN_FUNC_PUBLISH:
if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
err = -EINVAL;
goto out;
}
func->publish_type =
nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
func->publish_bcast =
nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
func->publish_bcast) {
err = -EINVAL;
goto out;
}
break;
case NL80211_NAN_FUNC_SUBSCRIBE:
func->subscribe_active =
nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
break;
case NL80211_NAN_FUNC_FOLLOW_UP:
if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
!tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
!tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
err = -EINVAL;
goto out;
}
func->followup_id =
nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
func->followup_reqid =
nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
memcpy(func->followup_dest.addr,
nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
sizeof(func->followup_dest.addr));
if (func->ttl) {
err = -EINVAL;
goto out;
}
break;
default:
err = -EINVAL;
goto out;
}
if (tb[NL80211_NAN_FUNC_SRF]) {
struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
err = nla_parse_nested_deprecated(srf_tb,
NL80211_NAN_SRF_ATTR_MAX,
tb[NL80211_NAN_FUNC_SRF],
nl80211_nan_srf_policy,
info->extack);
if (err)
goto out;
func->srf_include =
nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
if (srf_tb[NL80211_NAN_SRF_BF]) {
if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
!srf_tb[NL80211_NAN_SRF_BF_IDX]) {
err = -EINVAL;
goto out;
}
func->srf_bf_len =
nla_len(srf_tb[NL80211_NAN_SRF_BF]);
func->srf_bf =
kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
func->srf_bf_len, GFP_KERNEL);
if (!func->srf_bf) {
err = -ENOMEM;
goto out;
}
func->srf_bf_idx =
nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
} else {
struct nlattr *attr, *mac_attr =
srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
int n_entries, rem, i = 0;
if (!mac_attr) {
err = -EINVAL;
goto out;
}
n_entries = validate_acl_mac_addrs(mac_attr);
if (n_entries <= 0) {
err = -EINVAL;
goto out;
}
func->srf_num_macs = n_entries;
func->srf_macs =
kcalloc(n_entries, sizeof(*func->srf_macs),
GFP_KERNEL);
if (!func->srf_macs) {
err = -ENOMEM;
goto out;
}
nla_for_each_nested(attr, mac_attr, rem)
memcpy(func->srf_macs[i++].addr, nla_data(attr),
sizeof(*func->srf_macs));
}
}
if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
func, true);
if (err)
goto out;
}
if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
func, false);
if (err)
goto out;
}
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
err = -ENOMEM;
goto out;
}
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_ADD_NAN_FUNCTION);
/* This can't really happen - we just allocated 4KB */
if (WARN_ON(!hdr)) {
err = -ENOMEM;
goto out;
}
err = rdev_add_nan_func(rdev, wdev, func);
out:
if (err < 0) {
cfg80211_free_nan_func(func);
nlmsg_free(msg);
return err;
}
/* propagate the instance id and cookie to userspace */
if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
NL80211_ATTR_PAD))
goto nla_put_failure;
func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
if (!func_attr)
goto nla_put_failure;
if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
func->instance_id))
goto nla_put_failure;
nla_nest_end(msg, func_attr);
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
nlmsg_free(msg);
return -ENOBUFS;
}
static int nl80211_nan_del_func(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
u64 cookie;
if (wdev->iftype != NL80211_IFTYPE_NAN)
return -EOPNOTSUPP;
if (!wdev_running(wdev))
return -ENOTCONN;
if (!info->attrs[NL80211_ATTR_COOKIE])
return -EINVAL;
cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
rdev_del_nan_func(rdev, wdev, cookie);
return 0;
}
static int nl80211_nan_change_config(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
struct cfg80211_nan_conf conf = {};
u32 changed = 0;
if (wdev->iftype != NL80211_IFTYPE_NAN)
return -EOPNOTSUPP;
if (!wdev_running(wdev))
return -ENOTCONN;
if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
conf.master_pref =
nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
if (conf.master_pref <= 1 || conf.master_pref == 255)
return -EINVAL;
changed |= CFG80211_NAN_CONF_CHANGED_PREF;
}
if (info->attrs[NL80211_ATTR_BANDS]) {
u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
return -EOPNOTSUPP;
if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
return -EINVAL;
conf.bands = bands;
changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
}
if (!changed)
return -EINVAL;
return rdev_nan_change_conf(rdev, wdev, &conf, changed);
}
void cfg80211_nan_match(struct wireless_dev *wdev,
struct cfg80211_nan_match_params *match, gfp_t gfp)
{
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
struct sk_buff *msg;
void *hdr;
if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
return;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
(wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
wdev->netdev->ifindex)) ||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD))
goto nla_put_failure;
if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
NL80211_ATTR_PAD) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
goto nla_put_failure;
match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
if (!match_attr)
goto nla_put_failure;
local_func_attr = nla_nest_start_noflag(msg,
NL80211_NAN_MATCH_FUNC_LOCAL);
if (!local_func_attr)
goto nla_put_failure;
if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
goto nla_put_failure;
nla_nest_end(msg, local_func_attr);
peer_func_attr = nla_nest_start_noflag(msg,
NL80211_NAN_MATCH_FUNC_PEER);
if (!peer_func_attr)
goto nla_put_failure;
if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
goto nla_put_failure;
if (match->info && match->info_len &&
nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
match->info))
goto nla_put_failure;
nla_nest_end(msg, peer_func_attr);
nla_nest_end(msg, match_attr);
genlmsg_end(msg, hdr);
if (!wdev->owner_nlportid)
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
msg, 0, NL80211_MCGRP_NAN, gfp);
else
genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
wdev->owner_nlportid);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_nan_match);
void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
u8 inst_id,
enum nl80211_nan_func_term_reason reason,
u64 cookie, gfp_t gfp)
{
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
struct nlattr *func_attr;
void *hdr;
if (WARN_ON(!inst_id))
return;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
(wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
wdev->netdev->ifindex)) ||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD))
goto nla_put_failure;
if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
NL80211_ATTR_PAD))
goto nla_put_failure;
func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
if (!func_attr)
goto nla_put_failure;
if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
goto nla_put_failure;
nla_nest_end(msg, func_attr);
genlmsg_end(msg, hdr);
if (!wdev->owner_nlportid)
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
msg, 0, NL80211_MCGRP_NAN, gfp);
else
genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
wdev->owner_nlportid);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_nan_func_terminated);
static int nl80211_get_protocol_features(struct sk_buff *skb,
struct genl_info *info)
{
void *hdr;
struct sk_buff *msg;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_GET_PROTOCOL_FEATURES);
if (!hdr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
kfree_skb(msg);
return -ENOBUFS;
}
static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct cfg80211_update_ft_ies_params ft_params;
struct net_device *dev = info->user_ptr[1];
if (!rdev->ops->update_ft_ies)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_MDID] ||
!info->attrs[NL80211_ATTR_IE])
return -EINVAL;
memset(&ft_params, 0, sizeof(ft_params));
ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
return rdev_update_ft_ies(rdev, dev, &ft_params);
}
static int nl80211_crit_protocol_start(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
u16 duration;
int ret;
if (!rdev->ops->crit_proto_start)
return -EOPNOTSUPP;
if (WARN_ON(!rdev->ops->crit_proto_stop))
return -EINVAL;
if (rdev->crit_proto_nlportid)
return -EBUSY;
/* determine protocol if provided */
if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
if (proto >= NUM_NL80211_CRIT_PROTO)
return -EINVAL;
/* timeout must be provided */
if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
return -EINVAL;
duration =
nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
if (!ret)
rdev->crit_proto_nlportid = info->snd_portid;
return ret;
}
static int nl80211_crit_protocol_stop(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
if (!rdev->ops->crit_proto_stop)
return -EOPNOTSUPP;
if (rdev->crit_proto_nlportid) {
rdev->crit_proto_nlportid = 0;
rdev_crit_proto_stop(rdev, wdev);
}
return 0;
}
static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
struct nlattr *attr,
struct netlink_ext_ack *extack)
{
if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
if (attr->nla_type & NLA_F_NESTED) {
NL_SET_ERR_MSG_ATTR(extack, attr,
"unexpected nested data");
return -EINVAL;
}
return 0;
}
if (!(attr->nla_type & NLA_F_NESTED)) {
NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
return -EINVAL;
}
return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
}
static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev =
__cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
info->attrs);
int i, err;
u32 vid, subcmd;
if (!rdev->wiphy.vendor_commands)
return -EOPNOTSUPP;
if (IS_ERR(wdev)) {
err = PTR_ERR(wdev);
if (err != -EINVAL)
return err;
wdev = NULL;
} else if (wdev->wiphy != &rdev->wiphy) {
return -EINVAL;
}
if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
!info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
return -EINVAL;
vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
const struct wiphy_vendor_command *vcmd;
void *data = NULL;
int len = 0;
vcmd = &rdev->wiphy.vendor_commands[i];
if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
continue;
if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
WIPHY_VENDOR_CMD_NEED_NETDEV)) {
if (!wdev)
return -EINVAL;
if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
!wdev->netdev)
return -EINVAL;
if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
if (!wdev_running(wdev))
return -ENETDOWN;
}
} else {
wdev = NULL;
}
if (!vcmd->doit)
return -EOPNOTSUPP;
if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
err = nl80211_vendor_check_policy(vcmd,
info->attrs[NL80211_ATTR_VENDOR_DATA],
info->extack);
if (err)
return err;
}
rdev->cur_cmd_info = info;
err = vcmd->doit(&rdev->wiphy, wdev, data, len);
rdev->cur_cmd_info = NULL;
return err;
}
return -EOPNOTSUPP;
}
static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
struct netlink_callback *cb,
struct cfg80211_registered_device **rdev,
struct wireless_dev **wdev)
{
struct nlattr **attrbuf;
u32 vid, subcmd;
unsigned int i;
int vcmd_idx = -1;
int err;
void *data = NULL;
unsigned int data_len = 0;
if (cb->args[0]) {
/* subtract the 1 again here */
struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
struct wireless_dev *tmp;
if (!wiphy)
return -ENODEV;
*rdev = wiphy_to_rdev(wiphy);
*wdev = NULL;
if (cb->args[1]) {
list_for_each_entry(tmp, &wiphy->wdev_list, list) {
if (tmp->identifier == cb->args[1] - 1) {
*wdev = tmp;
break;
}
}
}
/* keep rtnl locked in successful case */
return 0;
}
attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
if (!attrbuf)
return -ENOMEM;
err = nlmsg_parse_deprecated(cb->nlh,
GENL_HDRLEN + nl80211_fam.hdrsize,
attrbuf, nl80211_fam.maxattr,
nl80211_policy, NULL);
if (err)
goto out;
if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
!attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
err = -EINVAL;
goto out;
}
*wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
if (IS_ERR(*wdev))
*wdev = NULL;
*rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
if (IS_ERR(*rdev)) {
err = PTR_ERR(*rdev);
goto out;
}
vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
const struct wiphy_vendor_command *vcmd;
vcmd = &(*rdev)->wiphy.vendor_commands[i];
if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
continue;
if (!vcmd->dumpit) {
err = -EOPNOTSUPP;
goto out;
}
vcmd_idx = i;
break;
}
if (vcmd_idx < 0) {
err = -EOPNOTSUPP;
goto out;
}
if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
err = nl80211_vendor_check_policy(
&(*rdev)->wiphy.vendor_commands[vcmd_idx],
attrbuf[NL80211_ATTR_VENDOR_DATA],
cb->extack);
if (err)
goto out;
}
/* 0 is the first index - add 1 to parse only once */
cb->args[0] = (*rdev)->wiphy_idx + 1;
/* add 1 to know if it was NULL */
cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
cb->args[2] = vcmd_idx;
cb->args[3] = (unsigned long)data;
cb->args[4] = data_len;
/* keep rtnl locked in successful case */
err = 0;
out:
kfree(attrbuf);
return err;
}
static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
unsigned int vcmd_idx;
const struct wiphy_vendor_command *vcmd;
void *data;
int data_len;
int err;
struct nlattr *vendor_data;
rtnl_lock();
err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
if (err)
goto out;
vcmd_idx = cb->args[2];
data = (void *)cb->args[3];
data_len = cb->args[4];
vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
WIPHY_VENDOR_CMD_NEED_NETDEV)) {
if (!wdev) {
err = -EINVAL;
goto out;
}
if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
!wdev->netdev) {
err = -EINVAL;
goto out;
}
if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
if (!wdev_running(wdev)) {
err = -ENETDOWN;
goto out;
}
}
}
while (1) {
void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
NL80211_CMD_VENDOR);
if (!hdr)
break;
if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
(wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
wdev_id(wdev),
NL80211_ATTR_PAD))) {
genlmsg_cancel(skb, hdr);
break;
}
vendor_data = nla_nest_start_noflag(skb,
NL80211_ATTR_VENDOR_DATA);
if (!vendor_data) {
genlmsg_cancel(skb, hdr);
break;
}
err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
(unsigned long *)&cb->args[5]);
nla_nest_end(skb, vendor_data);
if (err == -ENOBUFS || err == -ENOENT) {
genlmsg_cancel(skb, hdr);
break;
} else if (err <= 0) {
genlmsg_cancel(skb, hdr);
goto out;
}
genlmsg_end(skb, hdr);
}
err = skb->len;
out:
rtnl_unlock();
return err;
}
struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
enum nl80211_commands cmd,
enum nl80211_attrs attr,
int approxlen)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
if (WARN_ON(!rdev->cur_cmd_info))
return NULL;
return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
rdev->cur_cmd_info->snd_portid,
rdev->cur_cmd_info->snd_seq,
cmd, attr, NULL, GFP_KERNEL);
}
EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
{
struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
void *hdr = ((void **)skb->cb)[1];
struct nlattr *data = ((void **)skb->cb)[2];
/* clear CB data for netlink core to own from now on */
memset(skb->cb, 0, sizeof(skb->cb));
if (WARN_ON(!rdev->cur_cmd_info)) {
kfree_skb(skb);
return -EINVAL;
}
nla_nest_end(skb, data);
genlmsg_end(skb, hdr);
return genlmsg_reply(skb, rdev->cur_cmd_info);
}
EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
if (WARN_ON(!rdev->cur_cmd_info))
return 0;
return rdev->cur_cmd_info->snd_portid;
}
EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
static int nl80211_set_qos_map(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct cfg80211_qos_map *qos_map = NULL;
struct net_device *dev = info->user_ptr[1];
u8 *pos, len, num_des, des_len, des;
int ret;
if (!rdev->ops->set_qos_map)
return -EOPNOTSUPP;
if (info->attrs[NL80211_ATTR_QOS_MAP]) {
pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
if (len % 2)
return -EINVAL;
qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
if (!qos_map)
return -ENOMEM;
num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
if (num_des) {
des_len = num_des *
sizeof(struct cfg80211_dscp_exception);
memcpy(qos_map->dscp_exception, pos, des_len);
qos_map->num_des = num_des;
for (des = 0; des < num_des; des++) {
if (qos_map->dscp_exception[des].up > 7) {
kfree(qos_map);
return -EINVAL;
}
}
pos += des_len;
}
memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
}
wdev_lock(dev->ieee80211_ptr);
ret = nl80211_key_allowed(dev->ieee80211_ptr);
if (!ret)
ret = rdev_set_qos_map(rdev, dev, qos_map);
wdev_unlock(dev->ieee80211_ptr);
kfree(qos_map);
return ret;
}
static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
const u8 *peer;
u8 tsid, up;
u16 admitted_time = 0;
int err;
if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
!info->attrs[NL80211_ATTR_USER_PRIO])
return -EINVAL;
tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
/* WMM uses TIDs 0-7 even for TSPEC */
if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
/* TODO: handle 802.11 TSPEC/admission control
* need more attributes for that (e.g. BA session requirement);
* change the WMM adminssion test above to allow both then
*/
return -EINVAL;
}
peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
admitted_time =
nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
if (!admitted_time)
return -EINVAL;
}
wdev_lock(wdev);
switch (wdev->iftype) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
if (wdev->connected)
break;
err = -ENOTCONN;
goto out;
default:
err = -EOPNOTSUPP;
goto out;
}
err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
out:
wdev_unlock(wdev);
return err;
}
static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
const u8 *peer;
u8 tsid;
int err;
if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
wdev_lock(wdev);
err = rdev_del_tx_ts(rdev, dev, tsid, peer);
wdev_unlock(wdev);
return err;
}
static int nl80211_tdls_channel_switch(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_chan_def chandef = {};
const u8 *addr;
u8 oper_class;
int err;
if (!rdev->ops->tdls_channel_switch ||
!(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
return -EOPNOTSUPP;
switch (dev->ieee80211_ptr->iftype) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
break;
default:
return -EOPNOTSUPP;
}
if (!info->attrs[NL80211_ATTR_MAC] ||
!info->attrs[NL80211_ATTR_OPER_CLASS])
return -EINVAL;
err = nl80211_parse_chandef(rdev, info, &chandef);
if (err)
return err;
/*
* Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
* section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
* specification is not defined for them.
*/
if (chandef.chan->band == NL80211_BAND_2GHZ &&
chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
chandef.width != NL80211_CHAN_WIDTH_20)
return -EINVAL;
/* we will be active on the TDLS link */
if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
wdev->iftype))
return -EINVAL;
/* don't allow switching to DFS channels */
if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
return -EINVAL;
addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
wdev_lock(wdev);
err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
wdev_unlock(wdev);
return err;
}
static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
const u8 *addr;
if (!rdev->ops->tdls_channel_switch ||
!rdev->ops->tdls_cancel_channel_switch ||
!(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
return -EOPNOTSUPP;
switch (dev->ieee80211_ptr->iftype) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
break;
default:
return -EOPNOTSUPP;
}
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
wdev_lock(wdev);
rdev_tdls_cancel_channel_switch(rdev, dev, addr);
wdev_unlock(wdev);
return 0;
}
static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
const struct nlattr *nla;
bool enabled;
if (!rdev->ops->set_multicast_to_unicast)
return -EOPNOTSUPP;
if (wdev->iftype != NL80211_IFTYPE_AP &&
wdev->iftype != NL80211_IFTYPE_P2P_GO)
return -EOPNOTSUPP;
nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
enabled = nla_get_flag(nla);
return rdev_set_multicast_to_unicast(rdev, dev, enabled);
}
static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_pmk_conf pmk_conf = {};
int ret;
if (wdev->iftype != NL80211_IFTYPE_STATION &&
wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
return -EINVAL;
wdev_lock(wdev);
if (!wdev->connected) {
ret = -ENOTCONN;
goto out;
}
pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN)) {
ret = -EINVAL;
goto out;
}
pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
ret = -EINVAL;
goto out;
}
if (info->attrs[NL80211_ATTR_PMKR0_NAME])
pmk_conf.pmk_r0_name =
nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
ret = rdev_set_pmk(rdev, dev, &pmk_conf);
out:
wdev_unlock(wdev);
return ret;
}
static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
const u8 *aa;
int ret;
if (wdev->iftype != NL80211_IFTYPE_STATION &&
wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
wdev_lock(wdev);
aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
ret = rdev_del_pmk(rdev, dev, aa);
wdev_unlock(wdev);
return ret;
}
static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct cfg80211_external_auth_params params;
if (!rdev->ops->external_auth)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_SSID] &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EINVAL;
if (!info->attrs[NL80211_ATTR_BSSID])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_STATUS_CODE])
return -EINVAL;
memset(&params, 0, sizeof(params));
if (info->attrs[NL80211_ATTR_SSID]) {
params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
if (params.ssid.ssid_len == 0)
return -EINVAL;
memcpy(params.ssid.ssid,
nla_data(info->attrs[NL80211_ATTR_SSID]),
params.ssid.ssid_len);
}
memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
ETH_ALEN);
params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
if (info->attrs[NL80211_ATTR_PMKID])
params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
return rdev_external_auth(rdev, dev, &params);
}
static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
{
bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
const u8 *buf;
size_t len;
u8 *dest;
u16 proto;
bool noencrypt;
u64 cookie = 0;
int link_id;
int err;
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
return -EOPNOTSUPP;
if (!rdev->ops->tx_control_port)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_FRAME] ||
!info->attrs[NL80211_ATTR_MAC] ||
!info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
return -EINVAL;
}
wdev_lock(wdev);
switch (wdev->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_MESH_POINT:
break;
case NL80211_IFTYPE_ADHOC:
if (wdev->u.ibss.current_bss)
break;
err = -ENOTCONN;
goto out;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
if (wdev->connected)
break;
err = -ENOTCONN;
goto out;
default:
err = -EOPNOTSUPP;
goto out;
}
wdev_unlock(wdev);
buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
noencrypt =
nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
link_id = nl80211_link_id_or_invalid(info->attrs);
err = rdev_tx_control_port(rdev, dev, buf, len,
dest, cpu_to_be16(proto), noencrypt, link_id,
dont_wait_for_ack ? NULL : &cookie);
if (!err && !dont_wait_for_ack)
nl_set_extack_cookie_u64(info->extack, cookie);
return err;
out:
wdev_unlock(wdev);
return err;
}
static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_ftm_responder_stats ftm_stats = {};
unsigned int link_id = nl80211_link_id(info->attrs);
struct sk_buff *msg;
void *hdr;
struct nlattr *ftm_stats_attr;
int err;
if (wdev->iftype != NL80211_IFTYPE_AP ||
!wdev->links[link_id].ap.beacon_interval)
return -EOPNOTSUPP;
err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
if (err)
return err;
if (!ftm_stats.filled)
return -ENODATA;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_GET_FTM_RESPONDER_STATS);
if (!hdr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
goto nla_put_failure;
ftm_stats_attr = nla_nest_start_noflag(msg,
NL80211_ATTR_FTM_RESPONDER_STATS);
if (!ftm_stats_attr)
goto nla_put_failure;
#define SET_FTM(field, name, type) \
do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \
ftm_stats.field)) \
goto nla_put_failure; } while (0)
#define SET_FTM_U64(field, name) \
do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \
ftm_stats.field, NL80211_FTM_STATS_PAD)) \
goto nla_put_failure; } while (0)
SET_FTM(success_num, SUCCESS_NUM, u32);
SET_FTM(partial_num, PARTIAL_NUM, u32);
SET_FTM(failed_num, FAILED_NUM, u32);
SET_FTM(asap_num, ASAP_NUM, u32);
SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
#undef SET_FTM
nla_nest_end(msg, ftm_stats_attr);
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
nlmsg_free(msg);
return -ENOBUFS;
}
static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct cfg80211_update_owe_info owe_info;
struct net_device *dev = info->user_ptr[1];
if (!rdev->ops->update_owe_info)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
memset(&owe_info, 0, sizeof(owe_info));
owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
if (info->attrs[NL80211_ATTR_IE]) {
owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
}
return rdev_update_owe_info(rdev, dev, &owe_info);
}
static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct station_info sinfo = {};
const u8 *buf;
size_t len;
u8 *dest;
int err;
if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_MAC] ||
!info->attrs[NL80211_ATTR_FRAME]) {
GENL_SET_ERR_MSG(info, "Frame or MAC missing");
return -EINVAL;
}
if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
if (len < sizeof(struct ethhdr))
return -EINVAL;
if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
!ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
return -EINVAL;
err = rdev_get_station(rdev, dev, dest, &sinfo);
if (err)
return err;
cfg80211_sinfo_release_content(&sinfo);
return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
}
static int parse_tid_conf(struct cfg80211_registered_device *rdev,
struct nlattr *attrs[], struct net_device *dev,
struct cfg80211_tid_cfg *tid_conf,
struct genl_info *info, const u8 *peer,
unsigned int link_id)
{
struct netlink_ext_ack *extack = info->extack;
u64 mask;
int err;
if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
return -EINVAL;
tid_conf->config_override =
nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
if (tid_conf->config_override) {
if (rdev->ops->reset_tid_config) {
err = rdev_reset_tid_config(rdev, dev, peer,
tid_conf->tids);
if (err)
return err;
} else {
return -EINVAL;
}
}
if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
tid_conf->noack =
nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
}
if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
tid_conf->retry_short =
nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
return -EINVAL;
}
if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
tid_conf->retry_long =
nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
return -EINVAL;
}
if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
tid_conf->ampdu =
nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
}
if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
tid_conf->rtscts =
nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
}
if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
tid_conf->amsdu =
nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
}
if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
tid_conf->txrate_type = nla_get_u8(attrs[idx]);
if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
&tid_conf->txrate_mask, dev,
true, link_id);
if (err)
return err;
tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
}
tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
}
if (peer)
mask = rdev->wiphy.tid_config_support.peer;
else
mask = rdev->wiphy.tid_config_support.vif;
if (tid_conf->mask & ~mask) {
NL_SET_ERR_MSG(extack, "unsupported TID configuration");
return -ENOTSUPP;
}
return 0;
}
static int nl80211_set_tid_config(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
unsigned int link_id = nl80211_link_id(info->attrs);
struct net_device *dev = info->user_ptr[1];
struct cfg80211_tid_config *tid_config;
struct nlattr *tid;
int conf_idx = 0, rem_conf;
int ret = -EINVAL;
u32 num_conf = 0;
if (!info->attrs[NL80211_ATTR_TID_CONFIG])
return -EINVAL;
if (!rdev->ops->set_tid_config)
return -EOPNOTSUPP;
nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
rem_conf)
num_conf++;
tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
GFP_KERNEL);
if (!tid_config)
return -ENOMEM;
tid_config->n_tid_conf = num_conf;
if (info->attrs[NL80211_ATTR_MAC])
tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
wdev_lock(dev->ieee80211_ptr);
nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
rem_conf) {
ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
tid, NULL, NULL);
if (ret)
goto bad_tid_conf;
ret = parse_tid_conf(rdev, attrs, dev,
&tid_config->tid_conf[conf_idx],
info, tid_config->peer, link_id);
if (ret)
goto bad_tid_conf;
conf_idx++;
}
ret = rdev_set_tid_config(rdev, dev, tid_config);
bad_tid_conf:
kfree(tid_config);
wdev_unlock(dev->ieee80211_ptr);
return ret;
}
static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct cfg80211_color_change_settings params = {};
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct nlattr **tb;
u16 offset;
int err;
if (!rdev->ops->color_change)
return -EOPNOTSUPP;
if (!wiphy_ext_feature_isset(&rdev->wiphy,
NL80211_EXT_FEATURE_BSS_COLOR))
return -EOPNOTSUPP;
if (wdev->iftype != NL80211_IFTYPE_AP)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
!info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
!info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
return -EINVAL;
params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_next,
info->extack);
if (err)
return err;
tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
if (!tb)
return -ENOMEM;
err = nla_parse_nested(tb, NL80211_ATTR_MAX,
info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
nl80211_policy, info->extack);
if (err)
goto out;
err = nl80211_parse_beacon(rdev, tb, &params.beacon_color_change,
info->extack);
if (err)
goto out;
if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
err = -EINVAL;
goto out;
}
if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
err = -EINVAL;
goto out;
}
offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
if (offset >= params.beacon_color_change.tail_len) {
err = -EINVAL;
goto out;
}
if (params.beacon_color_change.tail[offset] != params.count) {
err = -EINVAL;
goto out;
}
params.counter_offset_beacon = offset;
if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
sizeof(u16)) {
err = -EINVAL;
goto out;
}
offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
if (offset >= params.beacon_color_change.probe_resp_len) {
err = -EINVAL;
goto out;
}
if (params.beacon_color_change.probe_resp[offset] !=
params.count) {
err = -EINVAL;
goto out;
}
params.counter_offset_presp = offset;
}
wdev_lock(wdev);
err = rdev_color_change(rdev, dev, &params);
wdev_unlock(wdev);
out:
kfree(params.beacon_next.mbssid_ies);
kfree(params.beacon_color_change.mbssid_ies);
kfree(params.beacon_next.rnr_ies);
kfree(params.beacon_color_change.rnr_ies);
kfree(tb);
return err;
}
static int nl80211_set_fils_aad(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct cfg80211_fils_aad fils_aad = {};
u8 *nonces;
if (!info->attrs[NL80211_ATTR_MAC] ||
!info->attrs[NL80211_ATTR_FILS_KEK] ||
!info->attrs[NL80211_ATTR_FILS_NONCES])
return -EINVAL;
fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
fils_aad.snonce = nonces;
fils_aad.anonce = nonces + FILS_NONCE_LEN;
return rdev_set_fils_aad(rdev, dev, &fils_aad);
}
static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
unsigned int link_id = nl80211_link_id(info->attrs);
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
int ret;
if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
return -EINVAL;
switch (wdev->iftype) {
case NL80211_IFTYPE_AP:
break;
default:
return -EINVAL;
}
if (!info->attrs[NL80211_ATTR_MAC] ||
!is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
return -EINVAL;
wdev_lock(wdev);
wdev->valid_links |= BIT(link_id);
ether_addr_copy(wdev->links[link_id].addr,
nla_data(info->attrs[NL80211_ATTR_MAC]));
ret = rdev_add_intf_link(rdev, wdev, link_id);
if (ret) {
wdev->valid_links &= ~BIT(link_id);
eth_zero_addr(wdev->links[link_id].addr);
}
wdev_unlock(wdev);
return ret;
}
static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
{
unsigned int link_id = nl80211_link_id(info->attrs);
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
/* cannot remove if there's no link */
if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
return -EINVAL;
switch (wdev->iftype) {
case NL80211_IFTYPE_AP:
break;
default:
return -EINVAL;
}
wdev_lock(wdev);
cfg80211_remove_link(wdev, link_id);
wdev_unlock(wdev);
return 0;
}
static int
nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
bool add)
{
struct link_station_parameters params = {};
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
int err;
if ((add && !rdev->ops->add_link_station) ||
(!add && !rdev->ops->mod_link_station))
return -EOPNOTSUPP;
if (add && !info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_MLD_ADDR])
return -EINVAL;
if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
return -EINVAL;
params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
if (info->attrs[NL80211_ATTR_MAC]) {
params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (!is_valid_ether_addr(params.link_mac))
return -EINVAL;
}
if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
return -EINVAL;
params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
params.supported_rates =
nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
params.supported_rates_len =
nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
}
if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
params.ht_capa =
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
params.vht_capa =
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
params.he_capa =
nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
params.he_capa_len =
nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
params.eht_capa =
nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
params.eht_capa_len =
nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
(const u8 *)params.eht_capa,
params.eht_capa_len,
false))
return -EINVAL;
}
}
if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
params.he_6ghz_capa =
nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
params.opmode_notif_used = true;
params.opmode_notif =
nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
}
err = nl80211_parse_sta_txpower_setting(info, &params.txpwr,
&params.txpwr_set);
if (err)
return err;
wdev_lock(dev->ieee80211_ptr);
if (add)
err = rdev_add_link_station(rdev, dev, &params);
else
err = rdev_mod_link_station(rdev, dev, &params);
wdev_unlock(dev->ieee80211_ptr);
return err;
}
static int
nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
{
return nl80211_add_mod_link_station(skb, info, true);
}
static int
nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
{
return nl80211_add_mod_link_station(skb, info, false);
}
static int
nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
{
struct link_station_del_parameters params = {};
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
int ret;
if (!rdev->ops->del_link_station)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
!info->attrs[NL80211_ATTR_MLO_LINK_ID])
return -EINVAL;
params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
wdev_lock(dev->ieee80211_ptr);
ret = rdev_del_link_station(rdev, dev, &params);
wdev_unlock(dev->ieee80211_ptr);
return ret;
}
static int nl80211_set_hw_timestamp(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct cfg80211_set_hw_timestamp hwts = {};
if (!rdev->wiphy.hw_timestamp_max_peers)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_MAC] &&
rdev->wiphy.hw_timestamp_max_peers != CFG80211_HW_TIMESTAMP_ALL_PEERS)
return -EOPNOTSUPP;
if (info->attrs[NL80211_ATTR_MAC])
hwts.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
hwts.enable =
nla_get_flag(info->attrs[NL80211_ATTR_HW_TIMESTAMP_ENABLED]);
return rdev_set_hw_timestamp(rdev, dev, &hwts);
}
#define NL80211_FLAG_NEED_WIPHY 0x01
#define NL80211_FLAG_NEED_NETDEV 0x02
#define NL80211_FLAG_NEED_RTNL 0x04
#define NL80211_FLAG_CHECK_NETDEV_UP 0x08
#define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
NL80211_FLAG_CHECK_NETDEV_UP)
#define NL80211_FLAG_NEED_WDEV 0x10
/* If a netdev is associated, it must be UP, P2P must be started */
#define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
NL80211_FLAG_CHECK_NETDEV_UP)
#define NL80211_FLAG_CLEAR_SKB 0x20
#define NL80211_FLAG_NO_WIPHY_MTX 0x40
#define NL80211_FLAG_MLO_VALID_LINK_ID 0x80
#define NL80211_FLAG_MLO_UNSUPPORTED 0x100
#define INTERNAL_FLAG_SELECTORS(__sel) \
SELECTOR(__sel, NONE, 0) /* must be first */ \
SELECTOR(__sel, WIPHY, \
NL80211_FLAG_NEED_WIPHY) \
SELECTOR(__sel, WDEV, \
NL80211_FLAG_NEED_WDEV) \
SELECTOR(__sel, NETDEV, \
NL80211_FLAG_NEED_NETDEV) \
SELECTOR(__sel, NETDEV_LINK, \
NL80211_FLAG_NEED_NETDEV | \
NL80211_FLAG_MLO_VALID_LINK_ID) \
SELECTOR(__sel, NETDEV_NO_MLO, \
NL80211_FLAG_NEED_NETDEV | \
NL80211_FLAG_MLO_UNSUPPORTED) \
SELECTOR(__sel, WIPHY_RTNL, \
NL80211_FLAG_NEED_WIPHY | \
NL80211_FLAG_NEED_RTNL) \
SELECTOR(__sel, WIPHY_RTNL_NOMTX, \
NL80211_FLAG_NEED_WIPHY | \
NL80211_FLAG_NEED_RTNL | \
NL80211_FLAG_NO_WIPHY_MTX) \
SELECTOR(__sel, WDEV_RTNL, \
NL80211_FLAG_NEED_WDEV | \
NL80211_FLAG_NEED_RTNL) \
SELECTOR(__sel, NETDEV_RTNL, \
NL80211_FLAG_NEED_NETDEV | \
NL80211_FLAG_NEED_RTNL) \
SELECTOR(__sel, NETDEV_UP, \
NL80211_FLAG_NEED_NETDEV_UP) \
SELECTOR(__sel, NETDEV_UP_LINK, \
NL80211_FLAG_NEED_NETDEV_UP | \
NL80211_FLAG_MLO_VALID_LINK_ID) \
SELECTOR(__sel, NETDEV_UP_NO_MLO, \
NL80211_FLAG_NEED_NETDEV_UP | \
NL80211_FLAG_MLO_UNSUPPORTED) \
SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR, \
NL80211_FLAG_NEED_NETDEV_UP | \
NL80211_FLAG_CLEAR_SKB | \
NL80211_FLAG_MLO_UNSUPPORTED) \
SELECTOR(__sel, NETDEV_UP_NOTMX, \
NL80211_FLAG_NEED_NETDEV_UP | \
NL80211_FLAG_NO_WIPHY_MTX) \
SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO, \
NL80211_FLAG_NEED_NETDEV_UP | \
NL80211_FLAG_NO_WIPHY_MTX | \
NL80211_FLAG_MLO_UNSUPPORTED) \
SELECTOR(__sel, NETDEV_UP_CLEAR, \
NL80211_FLAG_NEED_NETDEV_UP | \
NL80211_FLAG_CLEAR_SKB) \
SELECTOR(__sel, WDEV_UP, \
NL80211_FLAG_NEED_WDEV_UP) \
SELECTOR(__sel, WDEV_UP_LINK, \
NL80211_FLAG_NEED_WDEV_UP | \
NL80211_FLAG_MLO_VALID_LINK_ID) \
SELECTOR(__sel, WDEV_UP_RTNL, \
NL80211_FLAG_NEED_WDEV_UP | \
NL80211_FLAG_NEED_RTNL) \
SELECTOR(__sel, WIPHY_CLEAR, \
NL80211_FLAG_NEED_WIPHY | \
NL80211_FLAG_CLEAR_SKB)
enum nl80211_internal_flags_selector {
#define SELECTOR(_, name, value) NL80211_IFL_SEL_##name,
INTERNAL_FLAG_SELECTORS(_)
#undef SELECTOR
};
static u32 nl80211_internal_flags[] = {
#define SELECTOR(_, name, value) [NL80211_IFL_SEL_##name] = value,
INTERNAL_FLAG_SELECTORS(_)
#undef SELECTOR
};
static int nl80211_pre_doit(const struct genl_split_ops *ops,
struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = NULL;
struct wireless_dev *wdev = NULL;
struct net_device *dev = NULL;
u32 internal_flags;
int err;
if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
return -EINVAL;
internal_flags = nl80211_internal_flags[ops->internal_flags];
rtnl_lock();
if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
if (IS_ERR(rdev)) {
err = PTR_ERR(rdev);
goto out_unlock;
}
info->user_ptr[0] = rdev;
} else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
internal_flags & NL80211_FLAG_NEED_WDEV) {
wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
info->attrs);
if (IS_ERR(wdev)) {
err = PTR_ERR(wdev);
goto out_unlock;
}
dev = wdev->netdev;
dev_hold(dev);
rdev = wiphy_to_rdev(wdev->wiphy);
if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
if (!dev) {
err = -EINVAL;
goto out_unlock;
}
info->user_ptr[1] = dev;
} else {
info->user_ptr[1] = wdev;
}
if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
!wdev_running(wdev)) {
err = -ENETDOWN;
goto out_unlock;
}
info->user_ptr[0] = rdev;
}
if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
if (!wdev) {
err = -EINVAL;
goto out_unlock;
}
/* MLO -> require valid link ID */
if (wdev->valid_links &&
(!link_id ||
!(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
err = -EINVAL;
goto out_unlock;
}
/* non-MLO -> no link ID attribute accepted */
if (!wdev->valid_links && link_id) {
err = -EINVAL;
goto out_unlock;
}
}
if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
(wdev && wdev->valid_links)) {
err = -EINVAL;
goto out_unlock;
}
}
if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
wiphy_lock(&rdev->wiphy);
/* we keep the mutex locked until post_doit */
__release(&rdev->wiphy.mtx);
}
if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
rtnl_unlock();
return 0;
out_unlock:
rtnl_unlock();
dev_put(dev);
return err;
}
static void nl80211_post_doit(const struct genl_split_ops *ops,
struct sk_buff *skb,
struct genl_info *info)
{
u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
if (info->user_ptr[1]) {
if (internal_flags & NL80211_FLAG_NEED_WDEV) {
struct wireless_dev *wdev = info->user_ptr[1];
dev_put(wdev->netdev);
} else {
dev_put(info->user_ptr[1]);
}
}
if (info->user_ptr[0] &&
!(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
struct cfg80211_registered_device *rdev = info->user_ptr[0];
/* we kept the mutex locked since pre_doit */
__acquire(&rdev->wiphy.mtx);
wiphy_unlock(&rdev->wiphy);
}
if (internal_flags & NL80211_FLAG_NEED_RTNL)
rtnl_unlock();
/* If needed, clear the netlink message payload from the SKB
* as it might contain key data that shouldn't stick around on
* the heap after the SKB is freed. The netlink message header
* is still needed for further processing, so leave it intact.
*/
if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
struct nlmsghdr *nlh = nlmsg_hdr(skb);
memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
}
}
static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
struct cfg80211_sar_specs *sar_specs,
struct nlattr *spec[], int index)
{
u32 range_index, i;
if (!sar_specs || !spec)
return -EINVAL;
if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
!spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
return -EINVAL;
range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
/* check if range_index exceeds num_freq_ranges */
if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
return -EINVAL;
/* check if range_index duplicates */
for (i = 0; i < index; i++) {
if (sar_specs->sub_specs[i].freq_range_index == range_index)
return -EINVAL;
}
sar_specs->sub_specs[index].power =
nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
sar_specs->sub_specs[index].freq_range_index = range_index;
return 0;
}
static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
struct cfg80211_sar_specs *sar_spec;
enum nl80211_sar_type type;
struct nlattr *spec_list;
u32 specs;
int rem, err;
if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_SAR_SPEC])
return -EINVAL;
nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
info->attrs[NL80211_ATTR_SAR_SPEC],
NULL, NULL);
if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
return -EINVAL;
type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
if (type != rdev->wiphy.sar_capa->type)
return -EINVAL;
specs = 0;
nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
specs++;
if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
return -EINVAL;
sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
if (!sar_spec)
return -ENOMEM;
sar_spec->type = type;
specs = 0;
nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
spec_list, NULL, NULL);
switch (type) {
case NL80211_SAR_TYPE_POWER:
if (nl80211_set_sar_sub_specs(rdev, sar_spec,
spec, specs)) {
err = -EINVAL;
goto error;
}
break;
default:
err = -EINVAL;
goto error;
}
specs++;
}
sar_spec->num_sub_specs = specs;
rdev->cur_cmd_info = info;
err = rdev_set_sar_specs(rdev, sar_spec);
rdev->cur_cmd_info = NULL;
error:
kfree(sar_spec);
return err;
}
#define SELECTOR(__sel, name, value) \
((__sel) == (value)) ? NL80211_IFL_SEL_##name :
int __missing_selector(void);
#define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
static const struct genl_ops nl80211_ops[] = {
{
.cmd = NL80211_CMD_GET_WIPHY,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_wiphy,
.dumpit = nl80211_dump_wiphy,
.done = nl80211_dump_wiphy_done,
/* can be retrieved by unprivileged users */
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
},
};
static const struct genl_small_ops nl80211_small_ops[] = {
{
.cmd = NL80211_CMD_SET_WIPHY,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_wiphy,
.flags = GENL_UNS_ADMIN_PERM,
},
{
.cmd = NL80211_CMD_GET_INTERFACE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_interface,
.dumpit = nl80211_dump_interface,
/* can be retrieved by unprivileged users */
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
},
{
.cmd = NL80211_CMD_SET_INTERFACE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_interface,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_NEED_RTNL),
},
{
.cmd = NL80211_CMD_NEW_INTERFACE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_new_interface,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags =
IFLAGS(NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL |
/* we take the wiphy mutex later ourselves */
NL80211_FLAG_NO_WIPHY_MTX),
},
{
.cmd = NL80211_CMD_DEL_INTERFACE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_del_interface,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
NL80211_FLAG_NEED_RTNL),
},
{
.cmd = NL80211_CMD_GET_KEY,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_key,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_SET_KEY,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_key,
.flags = GENL_UNS_ADMIN_PERM,
/* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_CLEAR_SKB),
},
{
.cmd = NL80211_CMD_NEW_KEY,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_new_key,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_CLEAR_SKB),
},
{
.cmd = NL80211_CMD_DEL_KEY,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_del_key,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_SET_BEACON,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.flags = GENL_UNS_ADMIN_PERM,
.doit = nl80211_set_beacon,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_START_AP,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.flags = GENL_UNS_ADMIN_PERM,
.doit = nl80211_start_ap,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_STOP_AP,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.flags = GENL_UNS_ADMIN_PERM,
.doit = nl80211_stop_ap,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_GET_STATION,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_station,
.dumpit = nl80211_dump_station,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
},
{
.cmd = NL80211_CMD_SET_STATION,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_station,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_NEW_STATION,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_new_station,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_DEL_STATION,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_del_station,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_GET_MPATH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_mpath,
.dumpit = nl80211_dump_mpath,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_GET_MPP,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_mpp,
.dumpit = nl80211_dump_mpp,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_SET_MPATH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_mpath,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_NEW_MPATH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_new_mpath,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_DEL_MPATH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_del_mpath,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_SET_BSS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_bss,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_GET_REG,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_reg_do,
.dumpit = nl80211_get_reg_dump,
/* can be retrieved by unprivileged users */
},
#ifdef CONFIG_CFG80211_CRDA_SUPPORT
{
.cmd = NL80211_CMD_SET_REG,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_reg,
.flags = GENL_ADMIN_PERM,
},
#endif
{
.cmd = NL80211_CMD_REQ_SET_REG,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_req_set_reg,
.flags = GENL_ADMIN_PERM,
},
{
.cmd = NL80211_CMD_RELOAD_REGDB,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_reload_regdb,
.flags = GENL_ADMIN_PERM,
},
{
.cmd = NL80211_CMD_GET_MESH_CONFIG,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_mesh_config,
/* can be retrieved by unprivileged users */
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_SET_MESH_CONFIG,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_update_mesh_config,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_TRIGGER_SCAN,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_trigger_scan,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
},
{
.cmd = NL80211_CMD_ABORT_SCAN,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_abort_scan,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
},
{
.cmd = NL80211_CMD_GET_SCAN,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.dumpit = nl80211_dump_scan,
},
{
.cmd = NL80211_CMD_START_SCHED_SCAN,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_start_sched_scan,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_STOP_SCHED_SCAN,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_stop_sched_scan,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_AUTHENTICATE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_authenticate,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_CLEAR_SKB),
},
{
.cmd = NL80211_CMD_ASSOCIATE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_associate,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_CLEAR_SKB),
},
{
.cmd = NL80211_CMD_DEAUTHENTICATE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_deauthenticate,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_DISASSOCIATE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_disassociate,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_JOIN_IBSS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_join_ibss,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_LEAVE_IBSS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_leave_ibss,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
#ifdef CONFIG_NL80211_TESTMODE
{
.cmd = NL80211_CMD_TESTMODE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_testmode_do,
.dumpit = nl80211_testmode_dump,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
},
#endif
{
.cmd = NL80211_CMD_CONNECT,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_connect,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_CLEAR_SKB),
},
{
.cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_update_connect_params,
.flags = GENL_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_CLEAR_SKB),
},
{
.cmd = NL80211_CMD_DISCONNECT,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_disconnect,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_SET_WIPHY_NETNS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_wiphy_netns,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL |
NL80211_FLAG_NO_WIPHY_MTX),
},
{
.cmd = NL80211_CMD_GET_SURVEY,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.dumpit = nl80211_dump_survey,
},
{
.cmd = NL80211_CMD_SET_PMKSA,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_setdel_pmksa,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_CLEAR_SKB),
},
{
.cmd = NL80211_CMD_DEL_PMKSA,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_setdel_pmksa,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_FLUSH_PMKSA,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_flush_pmksa,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_remain_on_channel,
.flags = GENL_UNS_ADMIN_PERM,
/* FIXME: requiring a link ID here is probably not good */
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_cancel_remain_on_channel,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
},
{
.cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_tx_bitrate_mask,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_REGISTER_FRAME,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_register_mgmt,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
},
{
.cmd = NL80211_CMD_FRAME,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_tx_mgmt,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
},
{
.cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_tx_mgmt_cancel_wait,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
},
{
.cmd = NL80211_CMD_SET_POWER_SAVE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_power_save,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
},
{
.cmd = NL80211_CMD_GET_POWER_SAVE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_power_save,
/* can be retrieved by unprivileged users */
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
},
{
.cmd = NL80211_CMD_SET_CQM,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_cqm,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
},
{
.cmd = NL80211_CMD_SET_CHANNEL,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_channel,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_JOIN_MESH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_join_mesh,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_LEAVE_MESH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_leave_mesh,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_JOIN_OCB,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_join_ocb,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_LEAVE_OCB,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_leave_ocb,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
#ifdef CONFIG_PM
{
.cmd = NL80211_CMD_GET_WOWLAN,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_wowlan,
/* can be retrieved by unprivileged users */
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
},
{
.cmd = NL80211_CMD_SET_WOWLAN,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_wowlan,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
},
#endif
{
.cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_rekey_data,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_CLEAR_SKB),
},
{
.cmd = NL80211_CMD_TDLS_MGMT,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_tdls_mgmt,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_TDLS_OPER,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_tdls_oper,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_UNEXPECTED_FRAME,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_register_unexpected_frame,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
},
{
.cmd = NL80211_CMD_PROBE_CLIENT,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_probe_client,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_REGISTER_BEACONS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_register_beacons,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
},
{
.cmd = NL80211_CMD_SET_NOACK_MAP,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_noack_map,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
},
{
.cmd = NL80211_CMD_START_P2P_DEVICE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_start_p2p_device,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
NL80211_FLAG_NEED_RTNL),
},
{
.cmd = NL80211_CMD_STOP_P2P_DEVICE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_stop_p2p_device,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
NL80211_FLAG_NEED_RTNL),
},
{
.cmd = NL80211_CMD_START_NAN,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_start_nan,
.flags = GENL_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
NL80211_FLAG_NEED_RTNL),
},
{
.cmd = NL80211_CMD_STOP_NAN,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_stop_nan,
.flags = GENL_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
NL80211_FLAG_NEED_RTNL),
},
{
.cmd = NL80211_CMD_ADD_NAN_FUNCTION,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_nan_add_func,
.flags = GENL_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
},
{
.cmd = NL80211_CMD_DEL_NAN_FUNCTION,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_nan_del_func,
.flags = GENL_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
},
{
.cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_nan_change_config,
.flags = GENL_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
},
{
.cmd = NL80211_CMD_SET_MCAST_RATE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_mcast_rate,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
},
{
.cmd = NL80211_CMD_SET_MAC_ACL,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_mac_acl,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_MLO_UNSUPPORTED),
},
{
.cmd = NL80211_CMD_RADAR_DETECT,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_start_radar_detection,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NO_WIPHY_MTX |
NL80211_FLAG_MLO_UNSUPPORTED),
},
{
.cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_protocol_features,
},
{
.cmd = NL80211_CMD_UPDATE_FT_IES,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_update_ft_ies,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_CRIT_PROTOCOL_START,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_crit_protocol_start,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
},
{
.cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_crit_protocol_stop,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
},
{
.cmd = NL80211_CMD_GET_COALESCE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_coalesce,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
},
{
.cmd = NL80211_CMD_SET_COALESCE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_coalesce,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
},
{
.cmd = NL80211_CMD_CHANNEL_SWITCH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_channel_switch,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_VENDOR,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_vendor_cmd,
.dumpit = nl80211_vendor_cmd_dump,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_CLEAR_SKB),
},
{
.cmd = NL80211_CMD_SET_QOS_MAP,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_qos_map,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_ADD_TX_TS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_add_tx_ts,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_MLO_UNSUPPORTED),
},
{
.cmd = NL80211_CMD_DEL_TX_TS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_del_tx_ts,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_tdls_channel_switch,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_tdls_cancel_channel_switch,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_multicast_to_unicast,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
},
{
.cmd = NL80211_CMD_SET_PMK,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_pmk,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_CLEAR_SKB),
},
{
.cmd = NL80211_CMD_DEL_PMK,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_del_pmk,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_EXTERNAL_AUTH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_external_auth,
.flags = GENL_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_CONTROL_PORT_FRAME,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_tx_control_port,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_ftm_responder_stats,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_PEER_MEASUREMENT_START,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_pmsr_start,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
},
{
.cmd = NL80211_CMD_NOTIFY_RADAR,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_notify_radar_detection,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_UPDATE_OWE_INFO,
.doit = nl80211_update_owe_info,
.flags = GENL_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_PROBE_MESH_LINK,
.doit = nl80211_probe_mesh_link,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_SET_TID_CONFIG,
.doit = nl80211_set_tid_config,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_SET_SAR_SPECS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_sar_specs,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL),
},
{
.cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_color_change,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_SET_FILS_AAD,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_fils_aad,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_ADD_LINK,
.doit = nl80211_add_link,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
{
.cmd = NL80211_CMD_REMOVE_LINK,
.doit = nl80211_remove_link,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_ADD_LINK_STA,
.doit = nl80211_add_link_station,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_MODIFY_LINK_STA,
.doit = nl80211_modify_link_station,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_REMOVE_LINK_STA,
.doit = nl80211_remove_link_station,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_MLO_VALID_LINK_ID),
},
{
.cmd = NL80211_CMD_SET_HW_TIMESTAMP,
.doit = nl80211_set_hw_timestamp,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
},
};
static struct genl_family nl80211_fam __ro_after_init = {
.name = NL80211_GENL_NAME, /* have users key off the name instead */
.hdrsize = 0, /* no private header */
.version = 1, /* no particular meaning now */
.maxattr = NL80211_ATTR_MAX,
.policy = nl80211_policy,
.netnsok = true,
.pre_doit = nl80211_pre_doit,
.post_doit = nl80211_post_doit,
.module = THIS_MODULE,
.ops = nl80211_ops,
.n_ops = ARRAY_SIZE(nl80211_ops),
.small_ops = nl80211_small_ops,
.n_small_ops = ARRAY_SIZE(nl80211_small_ops),
.resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1,
.mcgrps = nl80211_mcgrps,
.n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
.parallel_ops = true,
};
/* notification functions */
void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
enum nl80211_commands cmd)
{
struct sk_buff *msg;
struct nl80211_dump_wiphy_state state = {};
WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
cmd != NL80211_CMD_DEL_WIPHY);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_CONFIG, GFP_KERNEL);
}
void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
enum nl80211_commands cmd)
{
struct sk_buff *msg;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_CONFIG, GFP_KERNEL);
}
static int nl80211_add_scan_req(struct sk_buff *msg,
struct cfg80211_registered_device *rdev)
{
struct cfg80211_scan_request *req = rdev->scan_req;
struct nlattr *nest;
int i;
struct cfg80211_scan_info *info;
if (WARN_ON(!req))
return 0;
nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
if (!nest)
goto nla_put_failure;
for (i = 0; i < req->n_ssids; i++) {
if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
goto nla_put_failure;
}
nla_nest_end(msg, nest);
if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
if (!nest)
goto nla_put_failure;
for (i = 0; i < req->n_channels; i++) {
if (nla_put_u32(msg, i,
ieee80211_channel_to_khz(req->channels[i])))
goto nla_put_failure;
}
nla_nest_end(msg, nest);
} else {
nest = nla_nest_start_noflag(msg,
NL80211_ATTR_SCAN_FREQUENCIES);
if (!nest)
goto nla_put_failure;
for (i = 0; i < req->n_channels; i++) {
if (nla_put_u32(msg, i, req->channels[i]->center_freq))
goto nla_put_failure;
}
nla_nest_end(msg, nest);
}
if (req->ie &&
nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
goto nla_put_failure;
if (req->flags &&
nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
goto nla_put_failure;
info = rdev->int_scan_req ? &rdev->int_scan_req->info :
&rdev->scan_req->info;
if (info->scan_start_tsf &&
(nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
info->scan_start_tsf, NL80211_BSS_PAD) ||
nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
info->tsf_bssid)))
goto nla_put_failure;
return 0;
nla_put_failure:
return -ENOBUFS;
}
static int nl80211_prep_scan_msg(struct sk_buff *msg,
struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
u32 portid, u32 seq, int flags,
u32 cmd)
{
void *hdr;
hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
if (!hdr)
return -1;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
(wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
wdev->netdev->ifindex)) ||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD))
goto nla_put_failure;
/* ignore errors and send incomplete event anyway */
nl80211_add_scan_req(msg, rdev);
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int
nl80211_prep_sched_scan_msg(struct sk_buff *msg,
struct cfg80211_sched_scan_request *req, u32 cmd)
{
void *hdr;
hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
if (!hdr)
return -1;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
NL80211_ATTR_PAD))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev)
{
struct sk_buff *msg;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
NL80211_CMD_TRIGGER_SCAN) < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_SCAN, GFP_KERNEL);
}
struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev, bool aborted)
{
struct sk_buff *msg;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return NULL;
if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
aborted ? NL80211_CMD_SCAN_ABORTED :
NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
nlmsg_free(msg);
return NULL;
}
return msg;
}
/* send message created by nl80211_build_scan_msg() */
void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
struct sk_buff *msg)
{
if (!msg)
return;
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_SCAN, GFP_KERNEL);
}
void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
{
struct sk_buff *msg;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
NL80211_MCGRP_SCAN, GFP_KERNEL);
}
static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
struct regulatory_request *request)
{
/* Userspace can always count this one always being set */
if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
goto nla_put_failure;
if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
NL80211_REGDOM_TYPE_WORLD))
goto nla_put_failure;
} else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
NL80211_REGDOM_TYPE_CUSTOM_WORLD))
goto nla_put_failure;
} else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
request->intersect) {
if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
NL80211_REGDOM_TYPE_INTERSECTION))
goto nla_put_failure;
} else {
if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
NL80211_REGDOM_TYPE_COUNTRY) ||
nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
request->alpha2))
goto nla_put_failure;
}
if (request->wiphy_idx != WIPHY_IDX_INVALID) {
struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
if (wiphy &&
nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
goto nla_put_failure;
if (wiphy &&
wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
goto nla_put_failure;
}
return true;
nla_put_failure:
return false;
}
/*
* This can happen on global regulatory changes or device specific settings
* based on custom regulatory domains.
*/
void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
struct regulatory_request *request)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
if (!hdr)
goto nla_put_failure;
if (!nl80211_reg_change_event_fill(msg, request))
goto nla_put_failure;
genlmsg_end(msg, hdr);
rcu_read_lock();
genlmsg_multicast_allns(&nl80211_fam, msg, 0,
NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
rcu_read_unlock();
return;
nla_put_failure:
nlmsg_free(msg);
}
static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
const u8 *buf, size_t len,
enum nl80211_commands cmd, gfp_t gfp,
int uapsd_queues, const u8 *req_ies,
size_t req_ies_len, bool reconnect)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(100 + len + req_ies_len, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
(req_ies &&
nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
goto nla_put_failure;
if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
goto nla_put_failure;
if (uapsd_queues >= 0) {
struct nlattr *nla_wmm =
nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
if (!nla_wmm)
goto nla_put_failure;
if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
uapsd_queues))
goto nla_put_failure;
nla_nest_end(msg, nla_wmm);
}
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *buf,
size_t len, gfp_t gfp)
{
nl80211_send_mlme_event(rdev, netdev, buf, len,
NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
false);
}
void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
struct cfg80211_rx_assoc_resp *data)
{
nl80211_send_mlme_event(rdev, netdev, data->buf, data->len,
NL80211_CMD_ASSOCIATE, GFP_KERNEL,
data->uapsd_queues,
data->req_ies, data->req_ies_len, false);
}
void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *buf,
size_t len, bool reconnect, gfp_t gfp)
{
nl80211_send_mlme_event(rdev, netdev, buf, len,
NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
reconnect);
}
void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *buf,
size_t len, bool reconnect, gfp_t gfp)
{
nl80211_send_mlme_event(rdev, netdev, buf, len,
NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
reconnect);
}
void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
size_t len)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
const struct ieee80211_mgmt *mgmt = (void *)buf;
u32 cmd;
if (WARN_ON(len < 2))
return;
if (ieee80211_is_deauth(mgmt->frame_control)) {
cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
} else if (ieee80211_is_disassoc(mgmt->frame_control)) {
cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
} else if (ieee80211_is_beacon(mgmt->frame_control)) {
if (wdev->unprot_beacon_reported &&
elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
return;
cmd = NL80211_CMD_UNPROT_BEACON;
wdev->unprot_beacon_reported = jiffies;
} else {
return;
}
trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
NULL, 0, false);
}
EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
struct net_device *netdev, int cmd,
const u8 *addr, gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *addr,
gfp_t gfp)
{
nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
addr, gfp);
}
void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *addr,
gfp_t gfp)
{
nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
addr, gfp);
}
void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
struct cfg80211_connect_resp_params *cr,
gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
unsigned int link;
size_t link_info_size = 0;
const u8 *connected_addr = cr->valid_links ?
cr->ap_mld_addr : cr->links[0].bssid;
if (cr->valid_links) {
for_each_valid_link(cr, link) {
/* Nested attribute header */
link_info_size += NLA_HDRLEN;
/* Link ID */
link_info_size += nla_total_size(sizeof(u8));
link_info_size += cr->links[link].addr ?
nla_total_size(ETH_ALEN) : 0;
link_info_size += (cr->links[link].bssid ||
cr->links[link].bss) ?
nla_total_size(ETH_ALEN) : 0;
link_info_size += nla_total_size(sizeof(u16));
}
}
msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
cr->fils.kek_len + cr->fils.pmk_len +
(cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
(connected_addr &&
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
cr->status) ||
(cr->status < 0 &&
(nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
cr->timeout_reason))) ||
(cr->req_ie &&
nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
(cr->resp_ie &&
nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
cr->resp_ie)) ||
(cr->fils.update_erp_next_seq_num &&
nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
cr->fils.erp_next_seq_num)) ||
(cr->status == WLAN_STATUS_SUCCESS &&
((cr->fils.kek &&
nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
cr->fils.kek)) ||
(cr->fils.pmk &&
nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
(cr->fils.pmkid &&
nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
goto nla_put_failure;
if (cr->valid_links) {
int i = 1;
struct nlattr *nested;
nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
if (!nested)
goto nla_put_failure;
for_each_valid_link(cr, link) {
struct nlattr *nested_mlo_links;
const u8 *bssid = cr->links[link].bss ?
cr->links[link].bss->bssid :
cr->links[link].bssid;
nested_mlo_links = nla_nest_start(msg, i);
if (!nested_mlo_links)
goto nla_put_failure;
if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
(bssid &&
nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
(cr->links[link].addr &&
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
cr->links[link].addr)) ||
nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
cr->links[link].status))
goto nla_put_failure;
nla_nest_end(msg, nested_mlo_links);
i++;
}
nla_nest_end(msg, nested);
}
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
struct cfg80211_roam_info *info, gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
size_t link_info_size = 0;
unsigned int link;
const u8 *connected_addr = info->ap_mld_addr ?
info->ap_mld_addr :
(info->links[0].bss ?
info->links[0].bss->bssid :
info->links[0].bssid);
if (info->valid_links) {
for_each_valid_link(info, link) {
/* Nested attribute header */
link_info_size += NLA_HDRLEN;
/* Link ID */
link_info_size += nla_total_size(sizeof(u8));
link_info_size += info->links[link].addr ?
nla_total_size(ETH_ALEN) : 0;
link_info_size += (info->links[link].bssid ||
info->links[link].bss) ?
nla_total_size(ETH_ALEN) : 0;
}
}
msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
info->fils.kek_len + info->fils.pmk_len +
(info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
link_info_size, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
(info->req_ie &&
nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
info->req_ie)) ||
(info->resp_ie &&
nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
info->resp_ie)) ||
(info->fils.update_erp_next_seq_num &&
nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
info->fils.erp_next_seq_num)) ||
(info->fils.kek &&
nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
info->fils.kek)) ||
(info->fils.pmk &&
nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
(info->fils.pmkid &&
nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
goto nla_put_failure;
if (info->valid_links) {
int i = 1;
struct nlattr *nested;
nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
if (!nested)
goto nla_put_failure;
for_each_valid_link(info, link) {
struct nlattr *nested_mlo_links;
const u8 *bssid = info->links[link].bss ?
info->links[link].bss->bssid :
info->links[link].bssid;
nested_mlo_links = nla_nest_start(msg, i);
if (!nested_mlo_links)
goto nla_put_failure;
if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
(bssid &&
nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
(info->links[link].addr &&
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
info->links[link].addr)))
goto nla_put_failure;
nla_nest_end(msg, nested_mlo_links);
i++;
}
nla_nest_end(msg, nested);
}
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *bssid,
const u8 *td_bitmap, u8 td_bitmap_len)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
goto nla_put_failure;
if ((td_bitmap_len > 0) && td_bitmap)
if (nla_put(msg, NL80211_ATTR_TD_BITMAP,
td_bitmap_len, td_bitmap))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, GFP_KERNEL);
return;
nla_put_failure:
nlmsg_free(msg);
}
void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
struct net_device *netdev, u16 reason,
const u8 *ie, size_t ie_len, bool from_ap)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
(reason &&
nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
(from_ap &&
nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
(ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, GFP_KERNEL);
return;
nla_put_failure:
nlmsg_free(msg);
}
void cfg80211_links_removed(struct net_device *dev, u16 link_mask)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
struct nlattr *links;
void *hdr;
ASSERT_WDEV_LOCK(wdev);
trace_cfg80211_links_removed(dev, link_mask);
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
return;
if (WARN_ON(!wdev->valid_links || !link_mask ||
(wdev->valid_links & link_mask) != link_mask ||
wdev->valid_links == link_mask))
return;
cfg80211_wdev_release_link_bsses(wdev, link_mask);
wdev->valid_links &= ~link_mask;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_LINKS_REMOVED);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
goto nla_put_failure;
links = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
if (!links)
goto nla_put_failure;
while (link_mask) {
struct nlattr *link;
int link_id = __ffs(link_mask);
link = nla_nest_start(msg, link_id + 1);
if (!link)
goto nla_put_failure;
if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
goto nla_put_failure;
nla_nest_end(msg, link);
link_mask &= ~(1 << link_id);
}
nla_nest_end(msg, links);
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, GFP_KERNEL);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_links_removed);
void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *bssid,
gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
const u8 *ie, u8 ie_len,
int sig_dbm, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct sk_buff *msg;
void *hdr;
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
return;
trace_cfg80211_notify_new_peer_candidate(dev, addr);
msg = nlmsg_new(100 + ie_len, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
(ie_len && ie &&
nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
(sig_dbm &&
nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *addr,
enum nl80211_key_type key_type, int key_id,
const u8 *tsc, gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
(addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
(key_id != -1 &&
nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
(tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
struct ieee80211_channel *channel_before,
struct ieee80211_channel *channel_after)
{
struct sk_buff *msg;
void *hdr;
struct nlattr *nl_freq;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
if (!hdr) {
nlmsg_free(msg);
return;
}
/*
* Since we are applying the beacon hint to a wiphy we know its
* wiphy_idx is valid
*/
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
goto nla_put_failure;
/* Before */
nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
if (!nl_freq)
goto nla_put_failure;
if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
goto nla_put_failure;
nla_nest_end(msg, nl_freq);
/* After */
nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
if (!nl_freq)
goto nla_put_failure;
if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
goto nla_put_failure;
nla_nest_end(msg, nl_freq);
genlmsg_end(msg, hdr);
rcu_read_lock();
genlmsg_multicast_allns(&nl80211_fam, msg, 0,
NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
rcu_read_unlock();
return;
nla_put_failure:
nlmsg_free(msg);
}
static void nl80211_send_remain_on_chan_event(
int cmd, struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev, u64 cookie,
struct ieee80211_channel *chan,
unsigned int duration, gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
(wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
wdev->netdev->ifindex)) ||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
NL80211_CHAN_NO_HT) ||
nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
NL80211_ATTR_PAD))
goto nla_put_failure;
if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
void cfg80211_assoc_comeback(struct net_device *netdev,
const u8 *ap_addr, u32 timeout)
{
struct wireless_dev *wdev = netdev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
void *hdr;
trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, GFP_KERNEL);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_assoc_comeback);
void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
struct ieee80211_channel *chan,
unsigned int duration, gfp_t gfp)
{
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
rdev, wdev, cookie, chan,
duration, gfp);
}
EXPORT_SYMBOL(cfg80211_ready_on_channel);
void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
struct ieee80211_channel *chan,
gfp_t gfp)
{
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
rdev, wdev, cookie, chan, 0, gfp);
}
EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
struct ieee80211_channel *chan,
gfp_t gfp)
{
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
rdev, wdev, cookie, chan, 0, gfp);
}
EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
struct station_info *sinfo, gfp_t gfp)
{
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
trace_cfg80211_new_sta(dev, mac_addr, sinfo);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
rdev, dev, mac_addr, sinfo) < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
}
EXPORT_SYMBOL(cfg80211_new_sta);
void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
struct station_info *sinfo, gfp_t gfp)
{
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
struct station_info empty_sinfo = {};
if (!sinfo)
sinfo = &empty_sinfo;
trace_cfg80211_del_sta(dev, mac_addr);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg) {
cfg80211_sinfo_release_content(sinfo);
return;
}
if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
rdev, dev, mac_addr, sinfo) < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
}
EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
enum nl80211_connect_failed_reason reason,
gfp_t gfp)
{
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_conn_failed);
static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
const u8 *addr, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct sk_buff *msg;
void *hdr;
u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
if (!nlportid)
return false;
msg = nlmsg_new(100, gfp);
if (!msg)
return true;
hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
if (!hdr) {
nlmsg_free(msg);
return true;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
return true;
nla_put_failure:
nlmsg_free(msg);
return true;
}
bool cfg80211_rx_spurious_frame(struct net_device *dev,
const u8 *addr, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
bool ret;
trace_cfg80211_rx_spurious_frame(dev, addr);
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
trace_cfg80211_return_bool(false);
return false;
}
ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
addr, gfp);
trace_cfg80211_return_bool(ret);
return ret;
}
EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
const u8 *addr, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
bool ret;
trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
wdev->iftype != NL80211_IFTYPE_P2P_GO &&
wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
trace_cfg80211_return_bool(false);
return false;
}
ret = __nl80211_unexpected_frame(dev,
NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
addr, gfp);
trace_cfg80211_return_bool(ret);
return ret;
}
EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev, u32 nlportid,
struct cfg80211_rx_info *info, gfp_t gfp)
{
struct net_device *netdev = wdev->netdev;
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(100 + info->len, gfp);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
if (!hdr) {
nlmsg_free(msg);
return -ENOMEM;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
(netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
netdev->ifindex)) ||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD) ||
(info->have_link_id &&
nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
(info->sig_dbm &&
nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
(info->flags &&
nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
(info->rx_tstamp && nla_put_u64_64bit(msg,
NL80211_ATTR_RX_HW_TIMESTAMP,
info->rx_tstamp,
NL80211_ATTR_PAD)) ||
(info->ack_tstamp && nla_put_u64_64bit(msg,
NL80211_ATTR_TX_HW_TIMESTAMP,
info->ack_tstamp,
NL80211_ATTR_PAD)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
nla_put_failure:
nlmsg_free(msg);
return -ENOBUFS;
}
static void nl80211_frame_tx_status(struct wireless_dev *wdev,
struct cfg80211_tx_status *status,
gfp_t gfp, enum nl80211_commands command)
{
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct net_device *netdev = wdev->netdev;
struct sk_buff *msg;
void *hdr;
if (command == NL80211_CMD_FRAME_TX_STATUS)
trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
status->ack);
else
trace_cfg80211_control_port_tx_status(wdev, status->cookie,
status->ack);
msg = nlmsg_new(100 + status->len, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, command);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
(netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
netdev->ifindex)) ||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD) ||
nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
NL80211_ATTR_PAD) ||
(status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
(status->tx_tstamp &&
nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
status->tx_tstamp, NL80211_ATTR_PAD)) ||
(status->ack_tstamp &&
nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
status->ack_tstamp, NL80211_ATTR_PAD)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
const u8 *buf, size_t len, bool ack,
gfp_t gfp)
{
struct cfg80211_tx_status status = {
.cookie = cookie,
.buf = buf,
.len = len,
.ack = ack
};
nl80211_frame_tx_status(wdev, &status, gfp,
NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
}
EXPORT_SYMBOL(cfg80211_control_port_tx_status);
void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
struct cfg80211_tx_status *status, gfp_t gfp)
{
nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
}
EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
static int __nl80211_rx_control_port(struct net_device *dev,
struct sk_buff *skb,
bool unencrypted,
int link_id,
gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct ethhdr *ehdr = eth_hdr(skb);
const u8 *addr = ehdr->h_source;
u16 proto = be16_to_cpu(skb->protocol);
struct sk_buff *msg;
void *hdr;
struct nlattr *frame;
u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
if (!nlportid)
return -ENOENT;
msg = nlmsg_new(100 + skb->len, gfp);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
if (!hdr) {
nlmsg_free(msg);
return -ENOBUFS;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
(link_id >= 0 &&
nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)) ||
(unencrypted && nla_put_flag(msg,
NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
goto nla_put_failure;
frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
if (!frame)
goto nla_put_failure;
skb_copy_bits(skb, 0, nla_data(frame), skb->len);
genlmsg_end(msg, hdr);
return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
nla_put_failure:
nlmsg_free(msg);
return -ENOBUFS;
}
bool cfg80211_rx_control_port(struct net_device *dev, struct sk_buff *skb,
bool unencrypted, int link_id)
{
int ret;
trace_cfg80211_rx_control_port(dev, skb, unencrypted, link_id);
ret = __nl80211_rx_control_port(dev, skb, unencrypted, link_id,
GFP_ATOMIC);
trace_cfg80211_return_bool(ret == 0);
return ret == 0;
}
EXPORT_SYMBOL(cfg80211_rx_control_port);
static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
const char *mac, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
void **cb;
if (!msg)
return NULL;
cb = (void **)msg->cb;
cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
if (!cb[0]) {
nlmsg_free(msg);
return NULL;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
goto nla_put_failure;
if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
goto nla_put_failure;
cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
if (!cb[1])
goto nla_put_failure;
cb[2] = rdev;
return msg;
nla_put_failure:
nlmsg_free(msg);
return NULL;
}
static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
{
void **cb = (void **)msg->cb;
struct cfg80211_registered_device *rdev = cb[2];
nla_nest_end(msg, cb[1]);
genlmsg_end(msg, cb[0]);
memset(msg->cb, 0, sizeof(msg->cb));
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
}
void cfg80211_cqm_rssi_notify(struct net_device *dev,
enum nl80211_cqm_rssi_threshold_event rssi_event,
s32 rssi_level, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_cqm_config *cqm_config;
trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
return;
rcu_read_lock();
cqm_config = rcu_dereference(wdev->cqm_config);
if (cqm_config) {
cqm_config->last_rssi_event_value = rssi_level;
cqm_config->last_rssi_event_type = rssi_event;
wiphy_work_queue(wdev->wiphy, &wdev->cqm_rssi_work);
}
rcu_read_unlock();
}
EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
void cfg80211_cqm_rssi_notify_work(struct wiphy *wiphy, struct wiphy_work *work)
{
struct wireless_dev *wdev = container_of(work, struct wireless_dev,
cqm_rssi_work);
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
enum nl80211_cqm_rssi_threshold_event rssi_event;
struct cfg80211_cqm_config *cqm_config;
struct sk_buff *msg;
s32 rssi_level;
wdev_lock(wdev);
cqm_config = rcu_dereference_protected(wdev->cqm_config,
lockdep_is_held(&wdev->mtx));
if (!wdev->cqm_config)
goto unlock;
cfg80211_cqm_rssi_update(rdev, wdev->netdev, cqm_config);
rssi_level = cqm_config->last_rssi_event_value;
rssi_event = cqm_config->last_rssi_event_type;
msg = cfg80211_prepare_cqm(wdev->netdev, NULL, GFP_KERNEL);
if (!msg)
goto unlock;
if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
rssi_event))
goto nla_put_failure;
if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
rssi_level))
goto nla_put_failure;
cfg80211_send_cqm(msg, GFP_KERNEL);
goto unlock;
nla_put_failure:
nlmsg_free(msg);
unlock:
wdev_unlock(wdev);
}
void cfg80211_cqm_txe_notify(struct net_device *dev,
const u8 *peer, u32 num_packets,
u32 rate, u32 intvl, gfp_t gfp)
{
struct sk_buff *msg;
msg = cfg80211_prepare_cqm(dev, peer, gfp);
if (!msg)
return;
if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
goto nla_put_failure;
cfg80211_send_cqm(msg, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
void cfg80211_cqm_pktloss_notify(struct net_device *dev,
const u8 *peer, u32 num_packets, gfp_t gfp)
{
struct sk_buff *msg;
trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
msg = cfg80211_prepare_cqm(dev, peer, gfp);
if (!msg)
return;
if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
goto nla_put_failure;
cfg80211_send_cqm(msg, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
{
struct sk_buff *msg;
msg = cfg80211_prepare_cqm(dev, NULL, gfp);
if (!msg)
return;
if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
goto nla_put_failure;
cfg80211_send_cqm(msg, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *bssid,
const u8 *replay_ctr, gfp_t gfp)
{
struct sk_buff *msg;
struct nlattr *rekey_attr;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
goto nla_put_failure;
rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
if (!rekey_attr)
goto nla_put_failure;
if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
NL80211_REPLAY_CTR_LEN, replay_ctr))
goto nla_put_failure;
nla_nest_end(msg, rekey_attr);
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
const u8 *replay_ctr, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
trace_cfg80211_gtk_rekey_notify(dev, bssid);
nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
}
EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
static void
nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
struct net_device *netdev, int index,
const u8 *bssid, bool preauth, gfp_t gfp)
{
struct sk_buff *msg;
struct nlattr *attr;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
goto nla_put_failure;
attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
if (!attr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
(preauth &&
nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
goto nla_put_failure;
nla_nest_end(msg, attr);
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
const u8 *bssid, bool preauth, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
}
EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
unsigned int link_id,
struct cfg80211_chan_def *chandef,
gfp_t gfp,
enum nl80211_commands notif,
u8 count, bool quiet, u16 punct_bitmap)
{
struct wireless_dev *wdev = netdev->ieee80211_ptr;
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
goto nla_put_failure;
if (wdev->valid_links &&
nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
goto nla_put_failure;
if (nl80211_send_chandef(msg, chandef))
goto nla_put_failure;
if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
goto nla_put_failure;
if (quiet &&
nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
goto nla_put_failure;
}
if (nla_put_u32(msg, NL80211_ATTR_PUNCT_BITMAP, punct_bitmap))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
void cfg80211_ch_switch_notify(struct net_device *dev,
struct cfg80211_chan_def *chandef,
unsigned int link_id, u16 punct_bitmap)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
ASSERT_WDEV_LOCK(wdev);
WARN_INVALID_LINK_ID(wdev, link_id);
trace_cfg80211_ch_switch_notify(dev, chandef, link_id, punct_bitmap);
switch (wdev->iftype) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
if (!WARN_ON(!wdev->links[link_id].client.current_bss))
cfg80211_update_assoc_bss_entry(wdev, link_id,
chandef->chan);
break;
case NL80211_IFTYPE_MESH_POINT:
wdev->u.mesh.chandef = *chandef;
wdev->u.mesh.preset_chandef = *chandef;
break;
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_P2P_GO:
wdev->links[link_id].ap.chandef = *chandef;
break;
case NL80211_IFTYPE_ADHOC:
wdev->u.ibss.chandef = *chandef;
break;
default:
WARN_ON(1);
break;
}
cfg80211_sched_dfs_chan_update(rdev);
nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
NL80211_CMD_CH_SWITCH_NOTIFY, 0, false,
punct_bitmap);
}
EXPORT_SYMBOL(cfg80211_ch_switch_notify);
void cfg80211_ch_switch_started_notify(struct net_device *dev,
struct cfg80211_chan_def *chandef,
unsigned int link_id, u8 count,
bool quiet, u16 punct_bitmap)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
ASSERT_WDEV_LOCK(wdev);
WARN_INVALID_LINK_ID(wdev, link_id);
trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id,
punct_bitmap);
nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
count, quiet, punct_bitmap);
}
EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
int cfg80211_bss_color_notify(struct net_device *dev,
enum nl80211_commands cmd, u8 count,
u64 color_bitmap)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
void *hdr;
ASSERT_WDEV_LOCK(wdev);
trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
if (!hdr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
goto nla_put_failure;
if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
goto nla_put_failure;
if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
color_bitmap, NL80211_ATTR_PAD))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
msg, 0, NL80211_MCGRP_MLME, GFP_KERNEL);
nla_put_failure:
nlmsg_free(msg);
return -EINVAL;
}
EXPORT_SYMBOL(cfg80211_bss_color_notify);
void
nl80211_radar_notify(struct cfg80211_registered_device *rdev,
const struct cfg80211_chan_def *chandef,
enum nl80211_radar_event event,
struct net_device *netdev, gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
goto nla_put_failure;
/* NOP and radar events don't need a netdev parameter */
if (netdev) {
struct wireless_dev *wdev = netdev->ieee80211_ptr;
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD))
goto nla_put_failure;
}
if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
goto nla_put_failure;
if (nl80211_send_chandef(msg, chandef))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
struct sta_opmode_info *sta_opmode,
gfp_t gfp)
{
struct sk_buff *msg;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
void *hdr;
if (WARN_ON(!mac))
return;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
goto nla_put_failure;
if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
goto nla_put_failure;
if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
goto nla_put_failure;
if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
goto nla_put_failure;
if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
u64 cookie, bool acked, s32 ack_signal,
bool is_valid_ack_signal, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct sk_buff *msg;
void *hdr;
trace_cfg80211_probe_status(dev, addr, cookie, acked);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
NL80211_ATTR_PAD) ||
(acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
(is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
ack_signal)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_probe_status);
void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
size_t len, int freq, int sig_dbm)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
void *hdr;
struct cfg80211_beacon_registration *reg;
trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
spin_lock_bh(&rdev->beacon_registrations_lock);
list_for_each_entry(reg, &rdev->beacon_registrations, list) {
msg = nlmsg_new(len + 100, GFP_ATOMIC);
if (!msg) {
spin_unlock_bh(&rdev->beacon_registrations_lock);
return;
}
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
if (!hdr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
(freq &&
(nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
KHZ_TO_MHZ(freq)) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
freq % 1000))) ||
(sig_dbm &&
nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
nla_put(msg, NL80211_ATTR_FRAME, len, frame))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
}
spin_unlock_bh(&rdev->beacon_registrations_lock);
return;
nla_put_failure:
spin_unlock_bh(&rdev->beacon_registrations_lock);
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
#ifdef CONFIG_PM
static int cfg80211_net_detect_results(struct sk_buff *msg,
struct cfg80211_wowlan_wakeup *wakeup)
{
struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
struct nlattr *nl_results, *nl_match, *nl_freqs;
int i, j;
nl_results = nla_nest_start_noflag(msg,
NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
if (!nl_results)
return -EMSGSIZE;
for (i = 0; i < nd->n_matches; i++) {
struct cfg80211_wowlan_nd_match *match = nd->matches[i];
nl_match = nla_nest_start_noflag(msg, i);
if (!nl_match)
break;
/* The SSID attribute is optional in nl80211, but for
* simplicity reasons it's always present in the
* cfg80211 structure. If a driver can't pass the
* SSID, that needs to be changed. A zero length SSID
* is still a valid SSID (wildcard), so it cannot be
* used for this purpose.
*/
if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
match->ssid.ssid)) {
nla_nest_cancel(msg, nl_match);
goto out;
}
if (match->n_channels) {
nl_freqs = nla_nest_start_noflag(msg,
NL80211_ATTR_SCAN_FREQUENCIES);
if (!nl_freqs) {
nla_nest_cancel(msg, nl_match);
goto out;
}
for (j = 0; j < match->n_channels; j++) {
if (nla_put_u32(msg, j, match->channels[j])) {
nla_nest_cancel(msg, nl_freqs);
nla_nest_cancel(msg, nl_match);
goto out;
}
}
nla_nest_end(msg, nl_freqs);
}
nla_nest_end(msg, nl_match);
}
out:
nla_nest_end(msg, nl_results);
return 0;
}
void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
struct cfg80211_wowlan_wakeup *wakeup,
gfp_t gfp)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct sk_buff *msg;
void *hdr;
int size = 200;
trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
if (wakeup)
size += wakeup->packet_present_len;
msg = nlmsg_new(size, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
if (!hdr)
goto free_msg;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD))
goto free_msg;
if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
wdev->netdev->ifindex))
goto free_msg;
if (wakeup) {
struct nlattr *reasons;
reasons = nla_nest_start_noflag(msg,
NL80211_ATTR_WOWLAN_TRIGGERS);
if (!reasons)
goto free_msg;
if (wakeup->disconnect &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
goto free_msg;
if (wakeup->magic_pkt &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
goto free_msg;
if (wakeup->gtk_rekey_failure &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
goto free_msg;
if (wakeup->eap_identity_req &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
goto free_msg;
if (wakeup->four_way_handshake &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
goto free_msg;
if (wakeup->rfkill_release &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
goto free_msg;
if (wakeup->pattern_idx >= 0 &&
nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
wakeup->pattern_idx))
goto free_msg;
if (wakeup->tcp_match &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
goto free_msg;
if (wakeup->tcp_connlost &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
goto free_msg;
if (wakeup->tcp_nomoretokens &&
nla_put_flag(msg,
NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
goto free_msg;
if (wakeup->packet) {
u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
if (!wakeup->packet_80211) {
pkt_attr =
NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
len_attr =
NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
}
if (wakeup->packet_len &&
nla_put_u32(msg, len_attr, wakeup->packet_len))
goto free_msg;
if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
wakeup->packet))
goto free_msg;
}
if (wakeup->net_detect &&
cfg80211_net_detect_results(msg, wakeup))
goto free_msg;
nla_nest_end(msg, reasons);
}
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
free_msg:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
#endif
void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
enum nl80211_tdls_operation oper,
u16 reason_code, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct sk_buff *msg;
void *hdr;
trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
reason_code);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
(reason_code > 0 &&
nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_tdls_oper_request);
static int nl80211_netlink_notify(struct notifier_block * nb,
unsigned long state,
void *_notify)
{
struct netlink_notify *notify = _notify;
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
struct cfg80211_beacon_registration *reg, *tmp;
if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
return NOTIFY_DONE;
rcu_read_lock();
list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
struct cfg80211_sched_scan_request *sched_scan_req;
list_for_each_entry_rcu(sched_scan_req,
&rdev->sched_scan_req_list,
list) {
if (sched_scan_req->owner_nlportid == notify->portid) {
sched_scan_req->nl_owner_dead = true;
wiphy_work_queue(&rdev->wiphy,
&rdev->sched_scan_stop_wk);
}
}
list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
cfg80211_mlme_unregister_socket(wdev, notify->portid);
if (wdev->owner_nlportid == notify->portid) {
wdev->nl_owner_dead = true;
schedule_work(&rdev->destroy_work);
} else if (wdev->conn_owner_nlportid == notify->portid) {
schedule_work(&wdev->disconnect_wk);
}
cfg80211_release_pmsr(wdev, notify->portid);
}
spin_lock_bh(&rdev->beacon_registrations_lock);
list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
list) {
if (reg->nlportid == notify->portid) {
list_del(&reg->list);
kfree(reg);
break;
}
}
spin_unlock_bh(&rdev->beacon_registrations_lock);
}
rcu_read_unlock();
/*
* It is possible that the user space process that is controlling the
* indoor setting disappeared, so notify the regulatory core.
*/
regulatory_netlink_notify(notify->portid);
return NOTIFY_OK;
}
static struct notifier_block nl80211_netlink_notifier = {
.notifier_call = nl80211_netlink_notify,
};
void cfg80211_ft_event(struct net_device *netdev,
struct cfg80211_ft_event_params *ft_event)
{
struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
void *hdr;
trace_cfg80211_ft_event(wiphy, netdev, ft_event);
if (!ft_event->target_ap)
return;
msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
GFP_KERNEL);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
if (!hdr)
goto out;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
goto out;
if (ft_event->ies &&
nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
goto out;
if (ft_event->ric_ies &&
nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
ft_event->ric_ies))
goto out;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, GFP_KERNEL);
return;
out:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_ft_event);
void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
{
struct cfg80211_registered_device *rdev;
struct sk_buff *msg;
void *hdr;
u32 nlportid;
rdev = wiphy_to_rdev(wdev->wiphy);
if (!rdev->crit_proto_nlportid)
return;
nlportid = rdev->crit_proto_nlportid;
rdev->crit_proto_nlportid = 0;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
if (!hdr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
void nl80211_send_ap_stopped(struct wireless_dev *wdev, unsigned int link_id)
{
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
if (!hdr)
goto out;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
NL80211_ATTR_PAD) ||
(wdev->valid_links &&
nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
goto out;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
NL80211_MCGRP_MLME, GFP_KERNEL);
return;
out:
nlmsg_free(msg);
}
int cfg80211_external_auth_request(struct net_device *dev,
struct cfg80211_external_auth_params *params,
gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct sk_buff *msg;
void *hdr;
if (!wdev->conn_owner_nlportid)
return -EINVAL;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
if (!hdr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
params->action) ||
nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
params->ssid.ssid) ||
(!is_zero_ether_addr(params->mld_addr) &&
nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN, params->mld_addr)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
wdev->conn_owner_nlportid);
return 0;
nla_put_failure:
nlmsg_free(msg);
return -ENOBUFS;
}
EXPORT_SYMBOL(cfg80211_external_auth_request);
void cfg80211_update_owe_info_event(struct net_device *netdev,
struct cfg80211_update_owe_info *owe_info,
gfp_t gfp)
{
struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
void *hdr;
trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
if (!hdr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
goto nla_put_failure;
if (!owe_info->ie_len ||
nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
goto nla_put_failure;
if (owe_info->assoc_link_id != -1) {
if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
owe_info->assoc_link_id))
goto nla_put_failure;
if (!is_zero_ether_addr(owe_info->peer_mld_addr) &&
nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
owe_info->peer_mld_addr))
goto nla_put_failure;
}
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_update_owe_info_event);
/* initialisation/exit functions */
int __init nl80211_init(void)
{
int err;
err = genl_register_family(&nl80211_fam);
if (err)
return err;
err = netlink_register_notifier(&nl80211_netlink_notifier);
if (err)
goto err_out;
return 0;
err_out:
genl_unregister_family(&nl80211_fam);
return err;
}
void nl80211_exit(void)
{
netlink_unregister_notifier(&nl80211_netlink_notifier);
genl_unregister_family(&nl80211_fam);
}
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