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iwlwifi: mvm: implement UMAC scan API

Browse source 
This API uses second CPU scan commands, and can support multiple
simultaneous scans.

Adding the new API, and adding new mechanisms to deal with up to
8 simultaneous scans instead of the old scan status.

New scan API requires scan configuration for default scan parameters,
adding it in _up flow. Also updating scan configuration after updating
valid scan antennas via debugfs.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
David Spinadel 2014-05-20 12:46:37 +03:00 committed by Emmanuel Grumbach
parent 5387b348b7
commit d24962214d
9 changed files with 942 additions and 58 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/net/wireless/iwlwifi/iwl-fw.h
View file

@ -145,6 +145,7 @@ enum iwl_ucode_tlv_api {
/**
* enum iwl_ucode_tlv_capa - ucode capabilities
* @IWL_UCODE_TLV_CAPA_D0I3_SUPPORT: supports D0i3
* @IWL_UCODE_TLV_CAPA_UMAC_SCAN: supports UMAC scan.
* @IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT: supports insertion of current
* tx power value into TPC Report action frame and Link Measurement Report
* action frame
@ -158,6 +159,7 @@ enum iwl_ucode_tlv_api {
*/
enum iwl_ucode_tlv_capa {
IWL_UCODE_TLV_CAPA_D0I3_SUPPORT = BIT(0),
IWL_UCODE_TLV_CAPA_UMAC_SCAN = BIT(2),
IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT = BIT(8),
IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT = BIT(9),
IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT = BIT(10),

6
drivers/net/wireless/iwlwifi/mvm/debugfs.c
View file

@ -936,7 +936,11 @@ iwl_dbgfs_scan_ant_rxchain_write(struct iwl_mvm *mvm, char *buf,
if (scan_rx_ant & ~mvm->fw->valid_rx_ant)
return -EINVAL;
mvm->scan_rx_ant = scan_rx_ant;
if (mvm->scan_rx_ant != scan_rx_ant) {
mvm->scan_rx_ant = scan_rx_ant;
if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
iwl_mvm_config_scan(mvm);
}
return count;
}

253
drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h
View file

@ -794,4 +794,257 @@ struct iwl_periodic_scan_complete {
__le32 reserved;
} __packed;
/* UMAC Scan API */
/**
* struct iwl_mvm_umac_cmd_hdr - Command header for UMAC commands
* @size: size of the command (not including header)
* @reserved0: for future use and alignment
* @ver: API version number
*/
struct iwl_mvm_umac_cmd_hdr {
__le16 size;
u8 reserved0;
u8 ver;
} __packed;
#define IWL_MVM_MAX_SIMULTANEOUS_SCANS 8
enum scan_config_flags {
SCAN_CONFIG_FLAG_ACTIVATE = BIT(0),
SCAN_CONFIG_FLAG_DEACTIVATE = BIT(1),
SCAN_CONFIG_FLAG_FORBID_CHUB_REQS = BIT(2),
SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS = BIT(3),
SCAN_CONFIG_FLAG_SET_TX_CHAINS = BIT(8),
SCAN_CONFIG_FLAG_SET_RX_CHAINS = BIT(9),
SCAN_CONFIG_FLAG_SET_AUX_STA_ID = BIT(10),
SCAN_CONFIG_FLAG_SET_ALL_TIMES = BIT(11),
SCAN_CONFIG_FLAG_SET_EFFECTIVE_TIMES = BIT(12),
SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS = BIT(13),
SCAN_CONFIG_FLAG_SET_LEGACY_RATES = BIT(14),
SCAN_CONFIG_FLAG_SET_MAC_ADDR = BIT(15),
SCAN_CONFIG_FLAG_SET_FRAGMENTED = BIT(16),
SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED = BIT(17),
SCAN_CONFIG_FLAG_SET_CAM_MODE = BIT(18),
SCAN_CONFIG_FLAG_CLEAR_CAM_MODE = BIT(19),
SCAN_CONFIG_FLAG_SET_PROMISC_MODE = BIT(20),
SCAN_CONFIG_FLAG_CLEAR_PROMISC_MODE = BIT(21),
/* Bits 26-31 are for num of channels in channel_array */
#define SCAN_CONFIG_N_CHANNELS(n) ((n) << 26)
};
enum scan_config_rates {
/* OFDM basic rates */
SCAN_CONFIG_RATE_6M = BIT(0),
SCAN_CONFIG_RATE_9M = BIT(1),
SCAN_CONFIG_RATE_12M = BIT(2),
SCAN_CONFIG_RATE_18M = BIT(3),
SCAN_CONFIG_RATE_24M = BIT(4),
SCAN_CONFIG_RATE_36M = BIT(5),
SCAN_CONFIG_RATE_48M = BIT(6),
SCAN_CONFIG_RATE_54M = BIT(7),
/* CCK basic rates */
SCAN_CONFIG_RATE_1M = BIT(8),
SCAN_CONFIG_RATE_2M = BIT(9),
SCAN_CONFIG_RATE_5M = BIT(10),
SCAN_CONFIG_RATE_11M = BIT(11),
/* Bits 16-27 are for supported rates */
#define SCAN_CONFIG_SUPPORTED_RATE(rate) ((rate) << 16)
};
enum iwl_channel_flags {
IWL_CHANNEL_FLAG_EBS = BIT(0),
IWL_CHANNEL_FLAG_ACCURATE_EBS = BIT(1),
IWL_CHANNEL_FLAG_EBS_ADD = BIT(2),
IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE = BIT(3),
};
/**
* struct iwl_scan_config
* @hdr: umac command header
* @flags: enum scan_config_flags
* @tx_chains: valid_tx antenna - ANT_* definitions
* @rx_chains: valid_rx antenna - ANT_* definitions
* @legacy_rates: default legacy rates - enum scan_config_rates
* @out_of_channel_time: default max out of serving channel time
* @suspend_time: default max suspend time
* @dwell_active: default dwell time for active scan
* @dwell_passive: default dwell time for passive scan
* @dwell_fragmented: default dwell time for fragmented scan
* @reserved: for future use and alignment
* @mac_addr: default mac address to be used in probes
* @bcast_sta_id: the index of the station in the fw
* @channel_flags: default channel flags - enum iwl_channel_flags
* scan_config_channel_flag
* @channel_array: default supported channels
*/
struct iwl_scan_config {
struct iwl_mvm_umac_cmd_hdr hdr;
__le32 flags;
__le32 tx_chains;
__le32 rx_chains;
__le32 legacy_rates;
__le32 out_of_channel_time;
__le32 suspend_time;
u8 dwell_active;
u8 dwell_passive;
u8 dwell_fragmented;
u8 reserved;
u8 mac_addr[ETH_ALEN];
u8 bcast_sta_id;
u8 channel_flags;
u8 channel_array[];
} __packed; /* SCAN_CONFIG_DB_CMD_API_S */
/**
* iwl_umac_scan_flags
*@IWL_UMAC_SCAN_FLAG_PREEMPTIVE: scan process triggered by this scan request
* can be preempted by other scan requests with higher priority.
* The low priority scan is aborted.
*@IWL_UMAC_SCAN_FLAG_START_NOTIF: notification will be sent to the driver
* when scan starts.
*/
enum iwl_umac_scan_flags {
IWL_UMAC_SCAN_FLAG_PREEMPTIVE = BIT(0),
IWL_UMAC_SCAN_FLAG_START_NOTIF = BIT(1),
};
enum iwl_umac_scan_uid_offsets {
IWL_UMAC_SCAN_UID_TYPE_OFFSET = 0,
IWL_UMAC_SCAN_UID_SEQ_OFFSET = 8,
};
enum iwl_umac_scan_general_flags {
IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC = BIT(0),
IWL_UMAC_SCAN_GEN_FLAGS_OVER_BT = BIT(1),
IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL = BIT(2),
IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE = BIT(3),
IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT = BIT(4),
IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE = BIT(5),
IWL_UMAC_SCAN_GEN_FLAGS_MULTIPLE_SSID = BIT(6),
IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED = BIT(7),
IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED = BIT(8),
IWL_UMAC_SCAN_GEN_FLAGS_MATCH = BIT(9)
};
/**
* struct iwl_scan_channel_cfg_umac
* @flags: bitmap - 0-19: directed scan to i'th ssid.
* @channel_num: channel number 1-13 etc.
* @iter_count: repetition count for the channel.
* @iter_interval: interval between two scan interations on one channel.
*/
struct iwl_scan_channel_cfg_umac {
__le32 flags;
u8 channel_num;
u8 iter_count;
__le16 iter_interval;
} __packed; /* SCAN_CHANNEL_CFG_S_VER2 */
/**
* struct iwl_scan_umac_schedule
* @interval: interval in seconds between scan iterations
* @iter_count: num of scan iterations for schedule plan, 0xff for infinite loop
* @reserved: for alignment and future use
*/
struct iwl_scan_umac_schedule {
__le16 interval;
u8 iter_count;
u8 reserved;
} __packed; /* SCAN_SCHED_PARAM_API_S_VER_1 */
/**
* struct iwl_scan_req_umac_tail - the rest of the UMAC scan request command
* parameters following channels configuration array.
* @schedule: two scheduling plans.
* @delay: delay in TUs before starting the first scan iteration
* @reserved: for future use and alignment
* @preq: probe request with IEs blocks
* @direct_scan: list of SSIDs for directed active scan
*/
struct iwl_scan_req_umac_tail {
/* SCAN_PERIODIC_PARAMS_API_S_VER_1 */
struct iwl_scan_umac_schedule schedule[2];
__le16 delay;
__le16 reserved;
/* SCAN_PROBE_PARAMS_API_S_VER_1 */
struct iwl_scan_probe_req preq;
struct iwl_ssid_ie direct_scan[PROBE_OPTION_MAX];
} __packed;
/**
* struct iwl_scan_req_umac
* @hdr: umac command header
* @flags: &enum iwl_umac_scan_flags
* @uid: scan id, &enum iwl_umac_scan_uid_offsets
* @ooc_priority: out of channel priority - &enum iwl_scan_priority
* @general_flags: &enum iwl_umac_scan_general_flags
* @reserved1: for future use and alignment
* @active_dwell: dwell time for active scan
* @passive_dwell: dwell time for passive scan
* @fragmented_dwell: dwell time for fragmented passive scan
* @max_out_time: max out of serving channel time
* @suspend_time: max suspend time
* @scan_priority: scan internal prioritization &enum iwl_scan_priority
* @channel_flags: &enum iwl_scan_channel_flags
* @n_channels: num of channels in scan request
* @reserved2: for future use and alignment
* @data: &struct iwl_scan_channel_cfg_umac and
* &struct iwl_scan_req_umac_tail
*/
struct iwl_scan_req_umac {
struct iwl_mvm_umac_cmd_hdr hdr;
__le32 flags;
__le32 uid;
__le32 ooc_priority;
/* SCAN_GENERAL_PARAMS_API_S_VER_1 */
__le32 general_flags;
u8 reserved1;
u8 active_dwell;
u8 passive_dwell;
u8 fragmented_dwell;
__le32 max_out_time;
__le32 suspend_time;
__le32 scan_priority;
/* SCAN_CHANNEL_PARAMS_API_S_VER_1 */
u8 channel_flags;
u8 n_channels;
__le16 reserved2;
u8 data[];
} __packed; /* SCAN_REQUEST_CMD_UMAC_API_S_VER_1 */
/**
* struct iwl_umac_scan_abort
* @hdr: umac command header
* @uid: scan id, &enum iwl_umac_scan_uid_offsets
* @flags: reserved
*/
struct iwl_umac_scan_abort {
struct iwl_mvm_umac_cmd_hdr hdr;
__le32 uid;
__le32 flags;
} __packed; /* SCAN_ABORT_CMD_UMAC_API_S_VER_1 */
/**
* struct iwl_umac_scan_complete
* @uid: scan id, &enum iwl_umac_scan_uid_offsets
* @last_schedule: last scheduling line
* @last_iter: last scan iteration number
* @scan status: &enum iwl_scan_offload_complete_status
* @ebs_status: &enum iwl_scan_ebs_status
* @time_from_last_iter: time elapsed from last iteration
* @reserved: for future use
*/
struct iwl_umac_scan_complete {
__le32 uid;
u8 last_schedule;
u8 last_iter;
u8 status;
u8 ebs_status;
__le32 time_from_last_iter;
__le32 reserved;
} __packed; /* SCAN_COMPLETE_NTF_UMAC_API_S_VER_1 */
#endif

6
drivers/net/wireless/iwlwifi/mvm/fw-api.h
View file

@ -106,6 +106,12 @@ enum {
DBG_CFG = 0x9,
ANTENNA_COUPLING_NOTIFICATION = 0xa,
/* UMAC scan commands */
SCAN_CFG_CMD = 0xc,
SCAN_REQ_UMAC = 0xd,
SCAN_ABORT_UMAC = 0xe,
SCAN_COMPLETE_UMAC = 0xf,
/* station table */
ADD_STA_KEY = 0x17,
ADD_STA = 0x18,

6
drivers/net/wireless/iwlwifi/mvm/fw.c
View file

@ -505,6 +505,12 @@ int iwl_mvm_up(struct iwl_mvm *mvm)
if (ret)
goto error;
if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
ret = iwl_mvm_config_scan(mvm);
if (ret)
goto error;
}
/* allow FW/transport low power modes if not during restart */
if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);

25
drivers/net/wireless/iwlwifi/mvm/mac80211.c
View file

@ -343,7 +343,8 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
}
if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN ||
mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
hw->sta_data_size = sizeof(struct iwl_mvm_sta);
@ -1935,9 +1936,11 @@ static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
return -EINVAL;
ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
if (ret)
return ret;
if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
if (ret)
return ret;
}
mutex_lock(&mvm->mutex);
@ -1950,6 +1953,8 @@ static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
else if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
else
ret = iwl_mvm_scan_request(mvm, vif, req);
@ -2247,9 +2252,11 @@ static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
if (ret)
return ret;
if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
if (ret)
return ret;
}
mutex_lock(&mvm->mutex);
@ -2269,11 +2276,10 @@ static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
goto out;
}
mvm->scan_status = IWL_MVM_SCAN_SCHED;
ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
if (ret)
mvm->scan_status = IWL_MVM_SCAN_NONE;
out:
mutex_unlock(&mvm->mutex);
return ret;
@ -2291,6 +2297,7 @@ static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
iwl_mvm_wait_for_async_handlers(mvm);
return ret;
}
static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,

16
drivers/net/wireless/iwlwifi/mvm/mvm.h
View file

@ -588,6 +588,10 @@ struct iwl_mvm {
void *scan_cmd;
struct iwl_mcast_filter_cmd *mcast_filter_cmd;
/* UMAC scan tracking */
u32 scan_uid[IWL_MVM_MAX_SIMULTANEOUS_SCANS];
u8 scan_seq_num, sched_scan_seq_num;
/* rx chain antennas set through debugfs for the scan command */
u8 scan_rx_ant;
@ -943,6 +947,7 @@ int iwl_mvm_update_quotas(struct iwl_mvm *mvm,
struct ieee80211_vif *disabled_vif);
/* Scanning */
int iwl_mvm_scan_size(struct iwl_mvm *mvm);
int iwl_mvm_scan_request(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct cfg80211_scan_request *req);
@ -983,6 +988,17 @@ int iwl_mvm_unified_sched_scan_lmac(struct iwl_mvm *mvm,
struct cfg80211_sched_scan_request *req,
struct ieee80211_scan_ies *ies);
/* UMAC scan */
int iwl_mvm_config_scan(struct iwl_mvm *mvm);
int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct ieee80211_scan_request *req);
int iwl_mvm_sched_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct cfg80211_sched_scan_request *req,
struct ieee80211_scan_ies *ies);
int iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd);
/* MVM debugfs */
#ifdef CONFIG_IWLWIFI_DEBUGFS
int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir);

17
drivers/net/wireless/iwlwifi/mvm/ops.c
View file

@ -244,6 +244,8 @@ static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
iwl_mvm_rx_scan_offload_complete_notif, true),
RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_offload_results,
false),
RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
true),
RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false),
RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
@ -346,6 +348,10 @@ static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = {
CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
CMD(ANTENNA_COUPLING_NOTIFICATION),
CMD(SCD_QUEUE_CFG),
CMD(SCAN_CFG_CMD),
CMD(SCAN_REQ_UMAC),
CMD(SCAN_ABORT_UMAC),
CMD(SCAN_COMPLETE_UMAC),
};
#undef CMD
@ -537,16 +543,7 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
}
}
if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
scan_size = sizeof(struct iwl_scan_req_unified_lmac) +
sizeof(struct iwl_scan_channel_cfg_lmac) *
mvm->fw->ucode_capa.n_scan_channels +
sizeof(struct iwl_scan_probe_req);
else
scan_size = sizeof(struct iwl_scan_cmd) +
mvm->fw->ucode_capa.max_probe_length +
mvm->fw->ucode_capa.n_scan_channels *
sizeof(struct iwl_scan_channel);
scan_size = iwl_mvm_scan_size(mvm);
mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
if (!mvm->scan_cmd)

669
drivers/net/wireless/iwlwifi/mvm/scan.c
View file

@ -83,15 +83,29 @@ struct iwl_mvm_scan_params {
} dwell[IEEE80211_NUM_BANDS];
};
enum iwl_umac_scan_uid_type {
IWL_UMAC_SCAN_UID_REG_SCAN = BIT(0),
IWL_UMAC_SCAN_UID_SCHED_SCAN = BIT(1),
IWL_UMAC_SCAN_UID_ALL = IWL_UMAC_SCAN_UID_REG_SCAN |
IWL_UMAC_SCAN_UID_SCHED_SCAN,
};
static int iwl_umac_scan_stop(struct iwl_mvm *mvm,
enum iwl_umac_scan_uid_type type, bool notify);
static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm)
{
if (mvm->scan_rx_ant != ANT_NONE)
return mvm->scan_rx_ant;
return mvm->fw->valid_rx_ant;
}
static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
{
u16 rx_chain;
u8 rx_ant;
if (mvm->scan_rx_ant != ANT_NONE)
rx_ant = mvm->scan_rx_ant;
else
rx_ant = mvm->fw->valid_rx_ant;
rx_ant = iwl_mvm_scan_rx_ant(mvm);
rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS;
rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS;
@ -541,23 +555,17 @@ int iwl_mvm_rx_scan_offload_results(struct iwl_mvm *mvm,
struct iwl_device_cmd *cmd)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
u8 client_bitmap = 0;
if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) &&
!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
struct iwl_sched_scan_results *notif = (void *)pkt->data;
client_bitmap = notif->client_bitmap;
if (!(notif->client_bitmap & SCAN_CLIENT_SCHED_SCAN))
return 0;
}
if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN ||
client_bitmap & SCAN_CLIENT_SCHED_SCAN) {
if (mvm->scan_status == IWL_MVM_SCAN_SCHED) {
IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
ieee80211_sched_scan_results(mvm->hw);
} else {
IWL_DEBUG_SCAN(mvm, "Scan results\n");
}
}
IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
ieee80211_sched_scan_results(mvm->hw);
return 0;
}
@ -969,6 +977,20 @@ int iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
return ret;
}
static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm,
struct cfg80211_sched_scan_request *req)
{
if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
IWL_DEBUG_SCAN(mvm,
"Sending scheduled scan with filtering, n_match_sets %d\n",
req->n_match_sets);
return false;
}
IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");
return true;
}
int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
struct cfg80211_sched_scan_request *req)
{
@ -984,15 +1006,8 @@ int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
.schedule_line[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER,
};
if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
IWL_DEBUG_SCAN(mvm,
"Sending scheduled scan with filtering, filter len %d\n",
req->n_match_sets);
} else {
IWL_DEBUG_SCAN(mvm,
"Sending Scheduled scan without filtering\n");
if (iwl_mvm_scan_pass_all(mvm, req))
scan_req.flags |= cpu_to_le16(IWL_SCAN_OFFLOAD_FLAG_PASS_ALL);
}
if (mvm->last_ebs_successful &&
mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT)
@ -1011,11 +1026,18 @@ int iwl_mvm_scan_offload_start(struct iwl_mvm *mvm,
int ret;
if ((mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
mvm->scan_status = IWL_MVM_SCAN_SCHED;
ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
if (ret)
return ret;
ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies);
} else if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
if (ret)
return ret;
ret = iwl_mvm_sched_scan_umac(mvm, vif, req, ies);
} else {
mvm->scan_status = IWL_MVM_SCAN_SCHED;
ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
if (ret)
return ret;
@ -1072,6 +1094,10 @@ int iwl_mvm_scan_offload_stop(struct iwl_mvm *mvm, bool notify)
lockdep_assert_held(&mvm->mutex);
if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
return iwl_umac_scan_stop(mvm, IWL_UMAC_SCAN_UID_SCHED_SCAN,
notify);
if (mvm->scan_status != IWL_MVM_SCAN_SCHED &&
(!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) ||
mvm->scan_status != IWL_MVM_SCAN_OS)) {
@ -1198,11 +1224,8 @@ static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies,
static void
iwl_mvm_build_unified_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct ieee80211_scan_ies *ies,
struct iwl_scan_req_unified_lmac *cmd)
struct iwl_scan_probe_req *preq)
{
struct iwl_scan_probe_req *preq = (void *)(cmd->data +
sizeof(struct iwl_scan_channel_cfg_lmac) *
mvm->fw->ucode_capa.n_scan_channels);
struct ieee80211_mgmt *frame = (struct ieee80211_mgmt *)preq->buf;
u8 *pos, *newpos;
@ -1287,6 +1310,7 @@ int iwl_mvm_unified_scan_lmac(struct iwl_mvm *mvm,
.dataflags = { IWL_HCMD_DFL_NOCOPY, },
};
struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd;
struct iwl_scan_probe_req *preq;
struct iwl_mvm_scan_params params = {};
u32 flags;
int ssid_bitmap = 0;
@ -1348,7 +1372,10 @@ int iwl_mvm_unified_scan_lmac(struct iwl_mvm *mvm,
req->req.n_channels, ssid_bitmap,
cmd);
iwl_mvm_build_unified_scan_probe(mvm, vif, &req->ies, cmd);
preq = (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
mvm->fw->ucode_capa.n_scan_channels);
iwl_mvm_build_unified_scan_probe(mvm, vif, &req->ies, preq);
ret = iwl_mvm_send_cmd(mvm, &hcmd);
if (!ret) {
@ -1381,6 +1408,7 @@ int iwl_mvm_unified_sched_scan_lmac(struct iwl_mvm *mvm,
.dataflags = { IWL_HCMD_DFL_NOCOPY, },
};
struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd;
struct iwl_scan_probe_req *preq;
struct iwl_mvm_scan_params params = {};
int ret;
u32 flags = 0, ssid_bitmap = 0;
@ -1404,15 +1432,8 @@ int iwl_mvm_unified_sched_scan_lmac(struct iwl_mvm *mvm,
cmd->n_channels = (u8)req->n_channels;
if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
IWL_DEBUG_SCAN(mvm,
"Sending scheduled scan with filtering, n_match_sets %d\n",
req->n_match_sets);
} else {
IWL_DEBUG_SCAN(mvm,
"Sending Scheduled scan without filtering\n");
if (iwl_mvm_scan_pass_all(mvm, req))
flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
}
if (req->n_ssids == 1 && req->ssids[0].ssid_len != 0)
flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
@ -1442,7 +1463,10 @@ int iwl_mvm_unified_sched_scan_lmac(struct iwl_mvm *mvm,
iwl_mvm_lmac_scan_cfg_channels(mvm, req->channels, req->n_channels,
ssid_bitmap, cmd);
iwl_mvm_build_unified_scan_probe(mvm, vif, ies, cmd);
preq = (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
mvm->fw->ucode_capa.n_scan_channels);
iwl_mvm_build_unified_scan_probe(mvm, vif, ies, preq);
ret = iwl_mvm_send_cmd(mvm, &hcmd);
if (!ret) {
@ -1464,6 +1488,10 @@ int iwl_mvm_unified_sched_scan_lmac(struct iwl_mvm *mvm,
int iwl_mvm_cancel_scan(struct iwl_mvm *mvm)
{
if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
return iwl_umac_scan_stop(mvm, IWL_UMAC_SCAN_UID_REG_SCAN,
true);
if (mvm->scan_status == IWL_MVM_SCAN_NONE)
return 0;
@ -1478,3 +1506,568 @@ int iwl_mvm_cancel_scan(struct iwl_mvm *mvm)
return iwl_mvm_scan_offload_stop(mvm, true);
return iwl_mvm_cancel_regular_scan(mvm);
}
/* UMAC scan API */
struct iwl_umac_scan_done {
struct iwl_mvm *mvm;
enum iwl_umac_scan_uid_type type;
};
static int rate_to_scan_rate_flag(unsigned int rate)
{
static const int rate_to_scan_rate[IWL_RATE_COUNT] = {
[IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M,
[IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M,
[IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M,
[IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M,
[IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M,
[IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M,
[IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M,
[IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M,
[IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M,
[IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M,
[IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M,
[IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M,
};
return rate_to_scan_rate[rate];
}
static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm)
{
struct ieee80211_supported_band *band;
unsigned int rates = 0;
int i;
band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
for (i = 0; i < band->n_bitrates; i++)
rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
for (i = 0; i < band->n_bitrates; i++)
rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
/* Set both basic rates and supported rates */
rates |= SCAN_CONFIG_SUPPORTED_RATE(rates);
return cpu_to_le32(rates);
}
int iwl_mvm_config_scan(struct iwl_mvm *mvm)
{
struct iwl_scan_config *scan_config;
struct ieee80211_supported_band *band;
int num_channels =
mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels +
mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels;
int ret, i, j = 0, cmd_size, data_size;
struct iwl_host_cmd cmd = {
.id = SCAN_CFG_CMD,
};
if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels))
return -ENOBUFS;
cmd_size = sizeof(*scan_config) + mvm->fw->ucode_capa.n_scan_channels;
scan_config = kzalloc(cmd_size, GFP_KERNEL);
if (!scan_config)
return -ENOMEM;
data_size = cmd_size - sizeof(struct iwl_mvm_umac_cmd_hdr);
scan_config->hdr.size = cpu_to_le16(data_size);
scan_config->flags = cpu_to_le32(SCAN_CONFIG_FLAG_ACTIVATE |
SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
SCAN_CONFIG_FLAG_SET_TX_CHAINS |
SCAN_CONFIG_FLAG_SET_RX_CHAINS |
SCAN_CONFIG_FLAG_SET_ALL_TIMES |
SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
SCAN_CONFIG_FLAG_SET_MAC_ADDR |
SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS|
SCAN_CONFIG_N_CHANNELS(num_channels));
scan_config->tx_chains = cpu_to_le32(mvm->fw->valid_tx_ant);
scan_config->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
scan_config->legacy_rates = iwl_mvm_scan_config_rates(mvm);
scan_config->out_of_channel_time = cpu_to_le32(170);
scan_config->suspend_time = cpu_to_le32(30);
scan_config->dwell_active = 20;
scan_config->dwell_passive = 110;
scan_config->dwell_fragmented = 20;
memcpy(&scan_config->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
scan_config->bcast_sta_id = mvm->aux_sta.sta_id;
scan_config->channel_flags = IWL_CHANNEL_FLAG_EBS |
IWL_CHANNEL_FLAG_ACCURATE_EBS |
IWL_CHANNEL_FLAG_EBS_ADD |
IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
for (i = 0; i < band->n_channels; i++, j++)
scan_config->channel_array[j] = band->channels[i].center_freq;
band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
for (i = 0; i < band->n_channels; i++, j++)
scan_config->channel_array[j] = band->channels[i].center_freq;
cmd.data[0] = scan_config;
cmd.len[0] = cmd_size;
cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
ret = iwl_mvm_send_cmd(mvm, &cmd);
kfree(scan_config);
return ret;
}
static int iwl_mvm_find_scan_uid(struct iwl_mvm *mvm, u32 uid)
{
int i;
for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++)
if (mvm->scan_uid[i] == uid)
return i;
return i;
}
static int iwl_mvm_find_free_scan_uid(struct iwl_mvm *mvm)
{
return iwl_mvm_find_scan_uid(mvm, 0);
}
static bool iwl_mvm_find_scan_type(struct iwl_mvm *mvm,
enum iwl_umac_scan_uid_type type)
{
int i;
for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++)
if (mvm->scan_uid[i] & type)
return true;
return false;
}
static u32 iwl_generate_scan_uid(struct iwl_mvm *mvm,
enum iwl_umac_scan_uid_type type)
{
u32 uid;
/* make sure exactly one bit is on in scan type */
WARN_ON(hweight8(type) != 1);
/*
* Make sure scan uids are unique. If one scan lasts long time while
* others are completing frequently, the seq number will wrap up and
* we may have more than one scan with the same uid.
*/
do {
uid = type | (mvm->scan_seq_num <<
IWL_UMAC_SCAN_UID_SEQ_OFFSET);
mvm->scan_seq_num++;
} while (iwl_mvm_find_scan_uid(mvm, uid) <
IWL_MVM_MAX_SIMULTANEOUS_SCANS);
IWL_DEBUG_SCAN(mvm, "Generated scan UID %u\n", uid);
return uid;
}
static void
iwl_mvm_build_generic_umac_scan_cmd(struct iwl_mvm *mvm,
struct iwl_scan_req_umac *cmd,
struct iwl_mvm_scan_params *params)
{
memset(cmd, 0, ksize(cmd));
cmd->hdr.size = cpu_to_le16(iwl_mvm_scan_size(mvm) -
sizeof(struct iwl_mvm_umac_cmd_hdr));
cmd->active_dwell = params->dwell[IEEE80211_BAND_2GHZ].active;
cmd->passive_dwell = params->dwell[IEEE80211_BAND_2GHZ].passive;
if (params->passive_fragmented)
cmd->fragmented_dwell =
params->dwell[IEEE80211_BAND_2GHZ].passive;
cmd->max_out_time = cpu_to_le32(params->max_out_time);
cmd->suspend_time = cpu_to_le32(params->suspend_time);
cmd->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH);
}
static void
iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
struct ieee80211_channel **channels,
int n_channels, u32 ssid_bitmap,
struct iwl_scan_req_umac *cmd)
{
struct iwl_scan_channel_cfg_umac *channel_cfg = (void *)&cmd->data;
int i;
for (i = 0; i < n_channels; i++) {
channel_cfg[i].flags = cpu_to_le32(ssid_bitmap);
channel_cfg[i].channel_num = channels[i]->hw_value;
channel_cfg[i].iter_count = 1;
channel_cfg[i].iter_interval = 0;
}
}
static u32 iwl_mvm_scan_umac_common_flags(struct iwl_mvm *mvm, int n_ssids,
struct cfg80211_ssid *ssids,
int fragmented)
{
int flags = 0;
if (n_ssids == 0)
flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE;
if (n_ssids == 1 && ssids[0].ssid_len != 0)
flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
if (fragmented)
flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED;
if (iwl_mvm_rrm_scan_needed(mvm))
flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
return flags;
}
int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct ieee80211_scan_request *req)
{
struct iwl_host_cmd hcmd = {
.id = SCAN_REQ_UMAC,
.len = { iwl_mvm_scan_size(mvm), },
.data = { mvm->scan_cmd, },
.dataflags = { IWL_HCMD_DFL_NOCOPY, },
};
struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
struct iwl_scan_req_umac_tail *sec_part = (void *)&cmd->data +
sizeof(struct iwl_scan_channel_cfg_umac) *
mvm->fw->ucode_capa.n_scan_channels;
struct iwl_mvm_scan_params params = {};
u32 uid, flags;
int ssid_bitmap = 0;
int ret, i, uid_idx;
lockdep_assert_held(&mvm->mutex);
uid_idx = iwl_mvm_find_free_scan_uid(mvm);
if (uid_idx >= IWL_MVM_MAX_SIMULTANEOUS_SCANS)
return -EBUSY;
/* we should have failed registration if scan_cmd was NULL */
if (WARN_ON(mvm->scan_cmd == NULL))
return -ENOMEM;
if (WARN_ON(req->req.n_ssids > PROBE_OPTION_MAX ||
req->ies.common_ie_len +
req->ies.len[NL80211_BAND_2GHZ] +
req->ies.len[NL80211_BAND_5GHZ] + 24 + 2 >
SCAN_OFFLOAD_PROBE_REQ_SIZE || req->req.n_channels >
mvm->fw->ucode_capa.n_scan_channels))
return -ENOBUFS;
iwl_mvm_scan_calc_params(mvm, vif, req->req.n_ssids, req->req.flags,
&params);
iwl_mvm_build_generic_umac_scan_cmd(mvm, cmd, &params);
uid = iwl_generate_scan_uid(mvm, IWL_UMAC_SCAN_UID_REG_SCAN);
mvm->scan_uid[uid_idx] = uid;
cmd->uid = cpu_to_le32(uid);
cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH);
flags = iwl_mvm_scan_umac_common_flags(mvm, req->req.n_ssids,
req->req.ssids,
params.passive_fragmented);
flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
cmd->general_flags = cpu_to_le32(flags);
cmd->n_channels = req->req.n_channels;
for (i = 0; i < req->req.n_ssids; i++)
ssid_bitmap |= BIT(i);
iwl_mvm_umac_scan_cfg_channels(mvm, req->req.channels,
req->req.n_channels, ssid_bitmap, cmd);
sec_part->schedule[0].iter_count = 1;
sec_part->delay = 0;
iwl_mvm_build_unified_scan_probe(mvm, vif, &req->ies, &sec_part->preq);
iwl_mvm_scan_fill_ssids(sec_part->direct_scan, req->req.ssids,
req->req.n_ssids, 0);
ret = iwl_mvm_send_cmd(mvm, &hcmd);
if (!ret) {
IWL_DEBUG_SCAN(mvm,
"Scan request was sent successfully\n");
} else {
/*
* If the scan failed, it usually means that the FW was unable
* to allocate the time events. Warn on it, but maybe we
* should try to send the command again with different params.
*/
IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
}
return ret;
}
int iwl_mvm_sched_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct cfg80211_sched_scan_request *req,
struct ieee80211_scan_ies *ies)
{
struct iwl_host_cmd hcmd = {
.id = SCAN_REQ_UMAC,
.len = { iwl_mvm_scan_size(mvm), },
.data = { mvm->scan_cmd, },
.dataflags = { IWL_HCMD_DFL_NOCOPY, },
};
struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
struct iwl_scan_req_umac_tail *sec_part = (void *)&cmd->data +
sizeof(struct iwl_scan_channel_cfg_umac) *
mvm->fw->ucode_capa.n_scan_channels;
struct iwl_mvm_scan_params params = {};
u32 uid, flags;
int ssid_bitmap = 0;
int ret, uid_idx;
lockdep_assert_held(&mvm->mutex);
uid_idx = iwl_mvm_find_free_scan_uid(mvm);
if (uid_idx >= IWL_MVM_MAX_SIMULTANEOUS_SCANS)
return -EBUSY;
/* we should have failed registration if scan_cmd was NULL */
if (WARN_ON(mvm->scan_cmd == NULL))
return -ENOMEM;
if (WARN_ON(req->n_ssids > PROBE_OPTION_MAX ||
ies->common_ie_len + ies->len[NL80211_BAND_2GHZ] +
ies->len[NL80211_BAND_5GHZ] + 24 + 2 >
SCAN_OFFLOAD_PROBE_REQ_SIZE || req->n_channels >
mvm->fw->ucode_capa.n_scan_channels))
return -ENOBUFS;
iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, req->flags,
&params);
iwl_mvm_build_generic_umac_scan_cmd(mvm, cmd, &params);
cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
uid = iwl_generate_scan_uid(mvm, IWL_UMAC_SCAN_UID_SCHED_SCAN);
mvm->scan_uid[uid_idx] = uid;
cmd->uid = cpu_to_le32(uid);
cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_LOW);
flags = iwl_mvm_scan_umac_common_flags(mvm, req->n_ssids, req->ssids,
params.passive_fragmented);
flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
if (iwl_mvm_scan_pass_all(mvm, req))
flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
else
flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH;
cmd->general_flags = cpu_to_le32(flags);
if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT &&
mvm->last_ebs_successful)
cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
cmd->n_channels = req->n_channels;
iwl_scan_offload_build_ssid(req, sec_part->direct_scan, &ssid_bitmap,
false);
/* This API uses bits 0-19 instead of 1-20. */
ssid_bitmap = ssid_bitmap >> 1;
iwl_mvm_umac_scan_cfg_channels(mvm, req->channels, req->n_channels,
ssid_bitmap, cmd);
sec_part->schedule[0].interval =
cpu_to_le16(req->interval / MSEC_PER_SEC);
sec_part->schedule[0].iter_count = 0xff;
sec_part->delay = 0;
iwl_mvm_build_unified_scan_probe(mvm, vif, ies, &sec_part->preq);
ret = iwl_mvm_send_cmd(mvm, &hcmd);
if (!ret) {
IWL_DEBUG_SCAN(mvm,
"Sched scan request was sent successfully\n");
} else {
/*
* If the scan failed, it usually means that the FW was unable
* to allocate the time events. Warn on it, but maybe we
* should try to send the command again with different params.
*/
IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
}
return ret;
}
int iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_umac_scan_complete *notif = (void *)pkt->data;
u32 uid = __le32_to_cpu(notif->uid);
bool sched = !!(uid & IWL_UMAC_SCAN_UID_SCHED_SCAN);
int uid_idx = iwl_mvm_find_scan_uid(mvm, uid);
if (WARN(uid_idx >= IWL_MVM_MAX_SIMULTANEOUS_SCANS,
"Scan notification for uknown scan ID\n"))
return 0;
IWL_DEBUG_SCAN(mvm,
"Scan completed, uid %u type %s, status %s, EBS status %s\n",
uid, sched ? "sched" : "regular",
notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
"completed" : "aborted",
notif->ebs_status == IWL_SCAN_EBS_SUCCESS ?
"success" : "failed");
mvm->last_ebs_successful = !notif->ebs_status;
mvm->scan_uid[uid_idx] = 0;
if (!sched) {
ieee80211_scan_completed(mvm->hw,
notif->status ==
IWL_SCAN_OFFLOAD_ABORTED);
iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
} else if (!iwl_mvm_find_scan_type(mvm, IWL_UMAC_SCAN_UID_SCHED_SCAN)) {
ieee80211_sched_scan_stopped(mvm->hw);
} else {
IWL_DEBUG_SCAN(mvm, "Another sched scan is running\n");
}
return 0;
}
static bool iwl_scan_umac_done_check(struct iwl_notif_wait_data *notif_wait,
struct iwl_rx_packet *pkt, void *data)
{
struct iwl_umac_scan_done *scan_done = data;
struct iwl_umac_scan_complete *notif = (void *)pkt->data;
u32 uid = __le32_to_cpu(notif->uid);
int uid_idx = iwl_mvm_find_scan_uid(scan_done->mvm, uid);
if (WARN_ON(pkt->hdr.cmd != SCAN_COMPLETE_UMAC))
return false;
if (uid_idx >= IWL_MVM_MAX_SIMULTANEOUS_SCANS)
return false;
/*
* Clear scan uid of scans that was aborted from above and completed
* in FW so the RX handler does nothing.
*/
scan_done->mvm->scan_uid[uid_idx] = 0;
return !iwl_mvm_find_scan_type(scan_done->mvm, scan_done->type);
}
static int iwl_umac_scan_abort_one(struct iwl_mvm *mvm, u32 uid)
{
struct iwl_umac_scan_abort cmd = {
.hdr.size = cpu_to_le16(sizeof(struct iwl_umac_scan_abort) -
sizeof(struct iwl_mvm_umac_cmd_hdr)),
.uid = cpu_to_le32(uid),
};
lockdep_assert_held(&mvm->mutex);
IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
return iwl_mvm_send_cmd_pdu(mvm, SCAN_ABORT_UMAC, 0, sizeof(cmd), &cmd);
}
static int iwl_umac_scan_stop(struct iwl_mvm *mvm,
enum iwl_umac_scan_uid_type type, bool notify)
{
struct iwl_notification_wait wait_scan_done;
static const u8 scan_done_notif[] = { SCAN_COMPLETE_UMAC, };
struct iwl_umac_scan_done scan_done = {
.mvm = mvm,
.type = type,
};
int i, ret = -EIO;
iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
scan_done_notif,
ARRAY_SIZE(scan_done_notif),
iwl_scan_umac_done_check, &scan_done);
IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++) {
if (mvm->scan_uid[i] & type) {
int err;
if (iwl_mvm_is_radio_killed(mvm) &&
(type & IWL_UMAC_SCAN_UID_REG_SCAN)) {
ieee80211_scan_completed(mvm->hw, true);
iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
break;
}
err = iwl_umac_scan_abort_one(mvm, mvm->scan_uid[i]);
if (!err)
ret = 0;
}
}
if (ret) {
IWL_DEBUG_SCAN(mvm, "Couldn't stop scan\n");
iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
return ret;
}
ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ);
if (ret)
return ret;
if (notify) {
if (type & IWL_UMAC_SCAN_UID_SCHED_SCAN)
ieee80211_sched_scan_stopped(mvm->hw);
if (type & IWL_UMAC_SCAN_UID_REG_SCAN) {
ieee80211_scan_completed(mvm->hw, true);
iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
}
}
return ret;
}
int iwl_mvm_scan_size(struct iwl_mvm *mvm)
{
if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
return sizeof(struct iwl_scan_req_umac) +
sizeof(struct iwl_scan_channel_cfg_umac) *
mvm->fw->ucode_capa.n_scan_channels +
sizeof(struct iwl_scan_req_umac_tail);
if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
return sizeof(struct iwl_scan_req_unified_lmac) +
sizeof(struct iwl_scan_channel_cfg_lmac) *
mvm->fw->ucode_capa.n_scan_channels +
sizeof(struct iwl_scan_probe_req);
return sizeof(struct iwl_scan_cmd) +
mvm->fw->ucode_capa.max_probe_length +
mvm->fw->ucode_capa.n_scan_channels *
sizeof(struct iwl_scan_channel);
}