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https://github.com/torvalds/linux
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d453399229
An control request or set message length is restricted to ETH frame length for the buffer from host to device. This is limitation is imposed by the firmware. Reviewed-by: Arend Van Spriel <arend@broadcom.com> Signed-off-by: Hante Meuleman <meuleman@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
196 lines
5.9 KiB
C
196 lines
5.9 KiB
C
/*
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* Copyright (c) 2010 Broadcom Corporation
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/****************
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* Common types *
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*/
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#ifndef _BRCMF_H_
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#define _BRCMF_H_
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#include "fweh.h"
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#define TOE_TX_CSUM_OL 0x00000001
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#define TOE_RX_CSUM_OL 0x00000002
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/* For supporting multiple interfaces */
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#define BRCMF_MAX_IFS 16
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#define DOT11_MAX_DEFAULT_KEYS 4
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/* Small, medium and maximum buffer size for dcmd
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*/
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#define BRCMF_DCMD_SMLEN 256
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#define BRCMF_DCMD_MEDLEN 1536
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#define BRCMF_DCMD_MAXLEN 8192
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/* IOCTL from host to device are limited in lenght. A device can only handle
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* ethernet frame size. This limitation is to be applied by protocol layer.
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*/
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#define BRCMF_TX_IOCTL_MAX_MSG_SIZE (ETH_FRAME_LEN+ETH_FCS_LEN)
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#define BRCMF_AMPDU_RX_REORDER_MAXFLOWS 256
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/* Length of firmware version string stored for
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* ethtool driver info which uses 32 bytes as well.
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*/
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#define BRCMF_DRIVER_FIRMWARE_VERSION_LEN 32
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/* Bus independent dongle command */
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struct brcmf_dcmd {
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uint cmd; /* common dongle cmd definition */
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void *buf; /* pointer to user buffer */
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uint len; /* length of user buffer */
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u8 set; /* get or set request (optional) */
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uint used; /* bytes read or written (optional) */
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uint needed; /* bytes needed (optional) */
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};
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/**
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* struct brcmf_ampdu_rx_reorder - AMPDU receive reorder info
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*
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* @pktslots: dynamic allocated array for ordering AMPDU packets.
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* @flow_id: AMPDU flow identifier.
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* @cur_idx: last AMPDU index from firmware.
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* @exp_idx: expected next AMPDU index.
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* @max_idx: maximum amount of packets per AMPDU.
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* @pend_pkts: number of packets currently in @pktslots.
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*/
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struct brcmf_ampdu_rx_reorder {
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struct sk_buff **pktslots;
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u8 flow_id;
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u8 cur_idx;
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u8 exp_idx;
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u8 max_idx;
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u8 pend_pkts;
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};
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/* Forward decls for struct brcmf_pub (see below) */
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struct brcmf_proto; /* device communication protocol info */
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struct brcmf_cfg80211_dev; /* cfg80211 device info */
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struct brcmf_fws_info; /* firmware signalling info */
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/* Common structure for module and instance linkage */
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struct brcmf_pub {
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/* Linkage ponters */
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struct brcmf_bus *bus_if;
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struct brcmf_proto *proto;
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struct brcmf_cfg80211_info *config;
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/* Internal brcmf items */
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uint hdrlen; /* Total BRCMF header length (proto + bus) */
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uint rxsz; /* Rx buffer size bus module should use */
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u8 wme_dp; /* wme discard priority */
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/* Dongle media info */
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char fwver[BRCMF_DRIVER_FIRMWARE_VERSION_LEN];
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u8 mac[ETH_ALEN]; /* MAC address obtained from dongle */
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/* Multicast data packets sent to dongle */
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unsigned long tx_multicast;
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struct brcmf_if *iflist[BRCMF_MAX_IFS];
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struct mutex proto_block;
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unsigned char proto_buf[BRCMF_DCMD_MAXLEN];
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struct brcmf_fweh_info fweh;
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struct brcmf_fws_info *fws;
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struct brcmf_ampdu_rx_reorder
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*reorder_flows[BRCMF_AMPDU_RX_REORDER_MAXFLOWS];
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#ifdef DEBUG
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struct dentry *dbgfs_dir;
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#endif
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};
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/* forward declarations */
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struct brcmf_cfg80211_vif;
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struct brcmf_fws_mac_descriptor;
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/**
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* enum brcmf_netif_stop_reason - reason for stopping netif queue.
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*
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* @BRCMF_NETIF_STOP_REASON_FWS_FC:
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* netif stopped due to firmware signalling flow control.
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* @BRCMF_NETIF_STOP_REASON_BLOCK_BUS:
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* netif stopped due to bus blocking.
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*/
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enum brcmf_netif_stop_reason {
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BRCMF_NETIF_STOP_REASON_FWS_FC = 1,
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BRCMF_NETIF_STOP_REASON_BLOCK_BUS = 2
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};
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/**
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* struct brcmf_if - interface control information.
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*
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* @drvr: points to device related information.
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* @vif: points to cfg80211 specific interface information.
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* @ndev: associated network device.
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* @stats: interface specific network statistics.
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* @setmacaddr_work: worker object for setting mac address.
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* @multicast_work: worker object for multicast provisioning.
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* @fws_desc: interface specific firmware-signalling descriptor.
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* @ifidx: interface index in device firmware.
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* @bssidx: index of bss associated with this interface.
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* @mac_addr: assigned mac address.
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* @netif_stop: bitmap indicates reason why netif queues are stopped.
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* @netif_stop_lock: spinlock for update netif_stop from multiple sources.
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* @pend_8021x_cnt: tracks outstanding number of 802.1x frames.
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* @pend_8021x_wait: used for signalling change in count.
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*/
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struct brcmf_if {
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struct brcmf_pub *drvr;
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struct brcmf_cfg80211_vif *vif;
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struct net_device *ndev;
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struct net_device_stats stats;
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struct work_struct setmacaddr_work;
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struct work_struct multicast_work;
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struct brcmf_fws_mac_descriptor *fws_desc;
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int ifidx;
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s32 bssidx;
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u8 mac_addr[ETH_ALEN];
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u8 netif_stop;
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spinlock_t netif_stop_lock;
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atomic_t pend_8021x_cnt;
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wait_queue_head_t pend_8021x_wait;
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};
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struct brcmf_skb_reorder_data {
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u8 *reorder;
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};
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int brcmf_netdev_wait_pend8021x(struct net_device *ndev);
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/* Return pointer to interface name */
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char *brcmf_ifname(struct brcmf_pub *drvr, int idx);
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int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked);
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struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
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char *name, u8 *mac_addr);
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void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx);
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void brcmf_txflowblock_if(struct brcmf_if *ifp,
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enum brcmf_netif_stop_reason reason, bool state);
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u32 brcmf_get_chip_info(struct brcmf_if *ifp);
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void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp,
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bool success);
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/* Sets dongle media info (drv_version, mac address). */
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int brcmf_c_preinit_dcmds(struct brcmf_if *ifp);
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#endif /* _BRCMF_H_ */
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