/*
* Copyright (c) 2010 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/if_ether.h>
#include <linux/spinlock.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/err.h>
#include <uapi/linux/nl80211.h>
#include <net/cfg80211.h>
#include <brcmu_utils.h>
#include <brcmu_wifi.h>
#include "dhd.h"
#include "dhd_proto.h"
#include "dhd_dbg.h"
#include "dhd_bus.h"
#include "fwil.h"
#include "fweh.h"
#include "fwsignal.h"
/**
* DOC: Firmware Signalling
*
* Firmware can send signals to host and vice versa, which are passed in the
* data packets using TLV based header. This signalling layer is on top of the
* BDC bus protocol layer.
*/
/*
* single definition for firmware-driver flow control tlv's.
*
* each tlv is specified by BRCMF_FWS_TLV_DEF(name, ID, length).
* A length value 0 indicates variable length tlv.
*/
#define BRCMF_FWS_TLV_DEFLIST \
BRCMF_FWS_TLV_DEF(MAC_OPEN, 1, 1) \
BRCMF_FWS_TLV_DEF(MAC_CLOSE, 2, 1) \
BRCMF_FWS_TLV_DEF(MAC_REQUEST_CREDIT, 3, 2) \
BRCMF_FWS_TLV_DEF(TXSTATUS, 4, 4) \
BRCMF_FWS_TLV_DEF(PKTTAG, 5, 4) \
BRCMF_FWS_TLV_DEF(MACDESC_ADD, 6, 8) \
BRCMF_FWS_TLV_DEF(MACDESC_DEL, 7, 8) \
BRCMF_FWS_TLV_DEF(RSSI, 8, 1) \
BRCMF_FWS_TLV_DEF(INTERFACE_OPEN, 9, 1) \
BRCMF_FWS_TLV_DEF(INTERFACE_CLOSE, 10, 1) \
BRCMF_FWS_TLV_DEF(FIFO_CREDITBACK, 11, 8) \
BRCMF_FWS_TLV_DEF(PENDING_TRAFFIC_BMP, 12, 2) \
BRCMF_FWS_TLV_DEF(MAC_REQUEST_PACKET, 13, 3) \
BRCMF_FWS_TLV_DEF(HOST_REORDER_RXPKTS, 14, 10) \
BRCMF_FWS_TLV_DEF(TRANS_ID, 18, 6) \
BRCMF_FWS_TLV_DEF(COMP_TXSTATUS, 19, 1) \
BRCMF_FWS_TLV_DEF(FILLER, 255, 0)
/*
* enum brcmf_fws_tlv_type - definition of tlv identifiers.
*/
#define BRCMF_FWS_TLV_DEF(name, id, len) \
BRCMF_FWS_TYPE_ ## name = id,
enum brcmf_fws_tlv_type {
BRCMF_FWS_TLV_DEFLIST
BRCMF_FWS_TYPE_INVALID
};
#undef BRCMF_FWS_TLV_DEF
/*
* enum brcmf_fws_tlv_len - definition of tlv lengths.
*/
#define BRCMF_FWS_TLV_DEF(name, id, len) \
BRCMF_FWS_TYPE_ ## name ## _LEN = (len),
enum brcmf_fws_tlv_len {
BRCMF_FWS_TLV_DEFLIST
};
#undef BRCMF_FWS_TLV_DEF
#ifdef DEBUG
/*
* brcmf_fws_tlv_names - array of tlv names.
*/
#define BRCMF_FWS_TLV_DEF(name, id, len) \
{ id, #name },
static struct {
enum brcmf_fws_tlv_type id;
const char *name;
} brcmf_fws_tlv_names[] = {
BRCMF_FWS_TLV_DEFLIST
};
#undef BRCMF_FWS_TLV_DEF
static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id)
{
int i;
for (i = 0; i < ARRAY_SIZE(brcmf_fws_tlv_names); i++)
if (brcmf_fws_tlv_names[i].id == id)
return brcmf_fws_tlv_names[i].name;
return "INVALID";
}
#else
static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id)
{
return "NODEBUG";
}
#endif /* DEBUG */
/*
* flags used to enable tlv signalling from firmware.
*/
#define BRCMF_FWS_FLAGS_RSSI_SIGNALS 0x0001
#define BRCMF_FWS_FLAGS_XONXOFF_SIGNALS 0x0002
#define BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS 0x0004
#define BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE 0x0008
#define BRCMF_FWS_FLAGS_PSQ_GENERATIONFSM_ENABLE 0x0010
#define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE 0x0020
#define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE 0x0040
#define BRCMF_FWS_STATE_OPEN 1
#define BRCMF_FWS_STATE_CLOSE 2
#define BRCMF_FWS_MAC_DESC_TABLE_SIZE 32
#define BRCMF_FWS_MAX_IFNUM 16
#define BRCMF_FWS_MAC_DESC_ID_INVALID 0xff
#define BRCMF_FWS_HOSTIF_FLOWSTATE_OFF 0
#define BRCMF_FWS_HOSTIF_FLOWSTATE_ON 1
#define BRCMF_FWS_PSQ_PREC_COUNT ((NL80211_NUM_ACS + 1) * 2)
#define BRCMF_FWS_PSQ_LEN 256
#define BRCMF_FWS_HTOD_FLAG_PKTFROMHOST 0x01
#define BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED 0x02
/**
* enum brcmf_fws_skb_state - indicates processing state of skb.
*
* @BRCMF_FWS_SKBSTATE_NEW: sk_buff is newly arrived in the driver.
* @BRCMF_FWS_SKBSTATE_DELAYED: sk_buff had to wait on queue.
* @BRCMF_FWS_SKBSTATE_SUPPRESSED: sk_buff has been suppressed by firmware.
*/
enum brcmf_fws_skb_state {
BRCMF_FWS_SKBSTATE_NEW,
BRCMF_FWS_SKBSTATE_DELAYED,
BRCMF_FWS_SKBSTATE_SUPPRESSED
};
/**
* struct brcmf_skbuff_cb - control buffer associated with skbuff.
*
* @if_flags: holds interface index and packet related flags.
* @htod: host to device packet identifier (used in PKTTAG tlv).
* @state: transmit state of the packet.
* @mac: descriptor related to destination for this packet.
*
* This information is stored in control buffer struct sk_buff::cb, which
* provides 48 bytes of storage so this structure should not exceed that.
*/
struct brcmf_skbuff_cb {
u16 if_flags;
u32 htod;
enum brcmf_fws_skb_state state;
struct brcmf_fws_mac_descriptor *mac;
};
/*
* macro casting skbuff control buffer to struct brcmf_skbuff_cb.
*/
#define brcmf_skbcb(skb) ((struct brcmf_skbuff_cb *)((skb)->cb))
/*
* sk_buff control if flags
*
* b[11] - packet sent upon firmware request.
* b[10] - packet only contains signalling data.
* b[9] - packet is a tx packet.
* b[8] - packet uses FIFO credit (non-pspoll).
* b[7] - interface in AP mode.
* b[6:4] - AC FIFO number.
* b[3:0] - interface index.
*/
#define BRCMF_SKB_IF_FLAGS_REQUESTED_MASK 0x0800
#define BRCMF_SKB_IF_FLAGS_REQUESTED_SHIFT 11
#define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_MASK 0x0400
#define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_SHIFT 10
#define BRCMF_SKB_IF_FLAGS_TRANSMIT_MASK 0x0200
#define BRCMF_SKB_IF_FLAGS_TRANSMIT_SHIFT 9
#define BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK 0x0100
#define BRCMF_SKB_IF_FLAGS_CREDITCHECK_SHIFT 8
#define BRCMF_SKB_IF_FLAGS_IF_AP_MASK 0x0080
#define BRCMF_SKB_IF_FLAGS_IF_AP_SHIFT 7
#define BRCMF_SKB_IF_FLAGS_FIFO_MASK 0x0070
#define BRCMF_SKB_IF_FLAGS_FIFO_SHIFT 4
#define BRCMF_SKB_IF_FLAGS_INDEX_MASK 0x000f
#define BRCMF_SKB_IF_FLAGS_INDEX_SHIFT 0
#define brcmf_skb_if_flags_set_field(skb, field, value) \
brcmu_maskset16(&(brcmf_skbcb(skb)->if_flags), \
BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT, (value))
#define brcmf_skb_if_flags_get_field(skb, field) \
brcmu_maskget16(brcmf_skbcb(skb)->if_flags, \
BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT)
/*
* sk_buff control packet identifier
*
* 32-bit packet identifier used in PKTTAG tlv from host to dongle.
*
* - Generated at the host (e.g. dhd)
* - Seen as a generic sequence number by firmware except for the flags field.
*
* Generation : b[31] => generation number for this packet [host->fw]
* OR, current generation number [fw->host]
* Flags : b[30:27] => command, status flags
* FIFO-AC : b[26:24] => AC-FIFO id
* h-slot : b[23:8] => hanger-slot
* freerun : b[7:0] => A free running counter
*/
#define BRCMF_SKB_HTOD_TAG_GENERATION_MASK 0x80000000
#define BRCMF_SKB_HTOD_TAG_GENERATION_SHIFT 31
#define BRCMF_SKB_HTOD_TAG_FLAGS_MASK 0x78000000
#define BRCMF_SKB_HTOD_TAG_FLAGS_SHIFT 27
#define BRCMF_SKB_HTOD_TAG_FIFO_MASK 0x07000000
#define BRCMF_SKB_HTOD_TAG_FIFO_SHIFT 24
#define BRCMF_SKB_HTOD_TAG_HSLOT_MASK 0x00ffff00
#define BRCMF_SKB_HTOD_TAG_HSLOT_SHIFT 8
#define BRCMF_SKB_HTOD_TAG_FREERUN_MASK 0x000000ff
#define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT 0
#define brcmf_skb_htod_tag_set_field(skb, field, value) \
brcmu_maskset32(&(brcmf_skbcb(skb)->htod), \
BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT, (value))
#define brcmf_skb_htod_tag_get_field(skb, field) \
brcmu_maskget32(brcmf_skbcb(skb)->htod, \
BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT)
#define BRCMF_FWS_TXSTAT_GENERATION_MASK 0x80000000
#define BRCMF_FWS_TXSTAT_GENERATION_SHIFT 31
#define BRCMF_FWS_TXSTAT_FLAGS_MASK 0x78000000
#define BRCMF_FWS_TXSTAT_FLAGS_SHIFT 27
#define BRCMF_FWS_TXSTAT_FIFO_MASK 0x07000000
#define BRCMF_FWS_TXSTAT_FIFO_SHIFT 24
#define BRCMF_FWS_TXSTAT_HSLOT_MASK 0x00FFFF00
#define BRCMF_FWS_TXSTAT_HSLOT_SHIFT 8
#define BRCMF_FWS_TXSTAT_PKTID_MASK 0x00FFFFFF
#define BRCMF_FWS_TXSTAT_PKTID_SHIFT 0
#define brcmf_txstatus_get_field(txs, field) \
brcmu_maskget32(txs, BRCMF_FWS_TXSTAT_ ## field ## _MASK, \
BRCMF_FWS_TXSTAT_ ## field ## _SHIFT)
/**
* enum brcmf_fws_fifo - fifo indices used by dongle firmware.
*
* @BRCMF_FWS_FIFO_AC_BK: fifo for background traffic.
* @BRCMF_FWS_FIFO_AC_BE: fifo for best-effort traffic.
* @BRCMF_FWS_FIFO_AC_VI: fifo for video traffic.
* @BRCMF_FWS_FIFO_AC_VO: fifo for voice traffic.
* @BRCMF_FWS_FIFO_BCMC: fifo for broadcast/multicast (AP only).
* @BRCMF_FWS_FIFO_ATIM: fifo for ATIM (AP only).
* @BRCMF_FWS_FIFO_COUNT: number of fifos.
*/
enum brcmf_fws_fifo {
BRCMF_FWS_FIFO_AC_BK,
BRCMF_FWS_FIFO_AC_BE,
BRCMF_FWS_FIFO_AC_VI,
BRCMF_FWS_FIFO_AC_VO,
BRCMF_FWS_FIFO_BCMC,
BRCMF_FWS_FIFO_ATIM,
BRCMF_FWS_FIFO_COUNT
};
/**
* enum brcmf_fws_txstatus - txstatus flag values.
*
* @BRCMF_FWS_TXSTATUS_DISCARD:
* host is free to discard the packet.
* @BRCMF_FWS_TXSTATUS_CORE_SUPPRESS:
* 802.11 core suppressed the packet.
* @BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS:
* firmware suppress the packet as device is already in PS mode.
* @BRCMF_FWS_TXSTATUS_FW_TOSSED:
* firmware tossed the packet.
*/
enum brcmf_fws_txstatus {
BRCMF_FWS_TXSTATUS_DISCARD,
BRCMF_FWS_TXSTATUS_CORE_SUPPRESS,
BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS,
BRCMF_FWS_TXSTATUS_FW_TOSSED
};
enum brcmf_fws_fcmode {
BRCMF_FWS_FCMODE_NONE,
BRCMF_FWS_FCMODE_IMPLIED_CREDIT,
BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
};
/**
* struct brcmf_fws_mac_descriptor - firmware signalling data per node/interface
*
* @occupied: slot is in use.
* @mac_handle: handle for mac entry determined by firmware.
* @interface_id: interface index.
* @state: current state.
* @suppressed: mac entry is suppressed.
* @generation: generation bit.
* @ac_bitmap: ac queue bitmap.
* @requested_credit: credits requested by firmware.
* @ea: ethernet address.
* @seq: per-node free-running sequence.
* @psq: power-save queue.
* @transit_count: packet in transit to firmware.
*/
struct brcmf_fws_mac_descriptor {
u8 occupied;
u8 mac_handle;
u8 interface_id;
u8 state;
bool suppressed;
u8 generation;
u8 ac_bitmap;
u8 requested_credit;
u8 ea[ETH_ALEN];
u8 seq[BRCMF_FWS_FIFO_COUNT];
struct pktq psq;
int transit_count;
};
#define BRCMF_FWS_HANGER_MAXITEMS 1024
/**
* enum brcmf_fws_hanger_item_state - state of hanger item.
*
* @BRCMF_FWS_HANGER_ITEM_STATE_FREE: item is free for use.
* @BRCMF_FWS_HANGER_ITEM_STATE_INUSE: item is in use.
* @BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED: item was suppressed.
*/
enum brcmf_fws_hanger_item_state {
BRCMF_FWS_HANGER_ITEM_STATE_FREE = 1,
BRCMF_FWS_HANGER_ITEM_STATE_INUSE,
BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
};
/**
* struct brcmf_fws_hanger_item - single entry for tx pending packet.
*
* @state: entry is either free or occupied.
* @gen: generation.
* @pkt: packet itself.
*/
struct brcmf_fws_hanger_item {
enum brcmf_fws_hanger_item_state state;
u8 gen;
struct sk_buff *pkt;
};
/**
* struct brcmf_fws_hanger - holds packets awaiting firmware txstatus.
*
* @pushed: packets pushed to await txstatus.
* @popped: packets popped upon handling txstatus.
* @failed_to_push: packets that could not be pushed.
* @failed_to_pop: packets that could not be popped.
* @failed_slotfind: packets for which failed to find an entry.
* @slot_pos: last returned item index for a free entry.
* @items: array of hanger items.
*/
struct brcmf_fws_hanger {
u32 pushed;
u32 popped;
u32 failed_to_push;
u32 failed_to_pop;
u32 failed_slotfind;
u32 slot_pos;
struct brcmf_fws_hanger_item items[BRCMF_FWS_HANGER_MAXITEMS];
};
struct brcmf_fws_info {
struct brcmf_pub *drvr;
struct brcmf_fws_stats stats;
struct brcmf_fws_hanger hanger;
struct brcmf_fws_mac_descriptor nodes[BRCMF_FWS_MAC_DESC_TABLE_SIZE];
struct brcmf_fws_mac_descriptor other;
enum brcmf_fws_fcmode fcmode;
int fifo_credit[BRCMF_FWS_FIFO_COUNT];
};
/*
* brcmf_fws_prio2fifo - mapping from 802.1d priority to firmware fifo index.
*/
static const int brcmf_fws_prio2fifo[] = {
BRCMF_FWS_FIFO_AC_BE,
BRCMF_FWS_FIFO_AC_BK,
BRCMF_FWS_FIFO_AC_BK,
BRCMF_FWS_FIFO_AC_BE,
BRCMF_FWS_FIFO_AC_VI,
BRCMF_FWS_FIFO_AC_VI,
BRCMF_FWS_FIFO_AC_VO,
BRCMF_FWS_FIFO_AC_VO
};
static int fcmode;
module_param(fcmode, int, S_IRUSR);
MODULE_PARM_DESC(fcmode, "mode of firmware signalled flow control");
#define BRCMF_FWS_TLV_DEF(name, id, len) \
case BRCMF_FWS_TYPE_ ## name: \
return len;
/**
* brcmf_fws_get_tlv_len() - returns defined length for given tlv id.
*
* @fws: firmware-signalling information.
* @id: identifier of the TLV.
*
* Return: the specified length for the given TLV; Otherwise -EINVAL.
*/
static int brcmf_fws_get_tlv_len(struct brcmf_fws_info *fws,
enum brcmf_fws_tlv_type id)
{
switch (id) {
BRCMF_FWS_TLV_DEFLIST
default:
fws->stats.tlv_invalid_type++;
break;
}
return -EINVAL;
}
#undef BRCMF_FWS_TLV_DEF
static bool brcmf_fws_ifidx_match(struct sk_buff *skb, void *arg)
{
u32 ifidx = brcmf_skb_if_flags_get_field(skb, INDEX);
return ifidx == *(int *)arg;
}
static void brcmf_fws_psq_flush(struct brcmf_fws_info *fws, struct pktq *q,
int ifidx)
{
bool (*matchfn)(struct sk_buff *, void *) = NULL;
struct sk_buff *skb;
int prec;
if (ifidx != -1)
matchfn = brcmf_fws_ifidx_match;
for (prec = 0; prec < q->num_prec; prec++) {
skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx);
while (skb) {
brcmf_txfinalize(fws->drvr, skb, false);
skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx);
}
}
}
static void brcmf_fws_hanger_init(struct brcmf_fws_hanger *hanger)
{
int i;
brcmf_dbg(TRACE, "enter\n");
memset(hanger, 0, sizeof(*hanger));
for (i = 0; i < ARRAY_SIZE(hanger->items); i++)
hanger->items[i].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE;
}
static u32 brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger *h)
{
u32 i;
brcmf_dbg(TRACE, "enter\n");
i = (h->slot_pos + 1) % BRCMF_FWS_HANGER_MAXITEMS;
while (i != h->slot_pos) {
if (h->items[i].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
h->slot_pos = i;
return i;
}
i++;
if (i == BRCMF_FWS_HANGER_MAXITEMS)
i = 0;
}
brcmf_err("all slots occupied\n");
h->failed_slotfind++;
return BRCMF_FWS_HANGER_MAXITEMS;
}
static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger *h,
struct sk_buff *pkt, u32 slot_id)
{
brcmf_dbg(TRACE, "enter\n");
if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS)
return -ENOENT;
if (h->items[slot_id].state != BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
brcmf_err("slot is not free\n");
h->failed_to_push++;
return -EINVAL;
}
h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE;
h->items[slot_id].pkt = pkt;
h->pushed++;
return 0;
}
static int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h,
u32 slot_id, struct sk_buff **pktout,
bool remove_item)
{
brcmf_dbg(TRACE, "enter\n");
if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS)
return -ENOENT;
if (h->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
brcmf_err("entry not in use\n");
h->failed_to_pop++;
return -EINVAL;
}
*pktout = h->items[slot_id].pkt;
if (remove_item) {
h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE;
h->items[slot_id].pkt = NULL;
h->items[slot_id].gen = 0xff;
h->popped++;
}
return 0;
}
static __used int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger *h,
u32 slot_id, u8 gen)
{
brcmf_dbg(TRACE, "enter\n");
if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS)
return -ENOENT;
h->items[slot_id].gen = gen;
if (h->items[slot_id].state != BRCMF_FWS_HANGER_ITEM_STATE_INUSE) {
brcmf_err("entry not in use\n");
return -EINVAL;
}
h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED;
return 0;
}
static int brcmf_fws_hanger_get_genbit(struct brcmf_fws_hanger *hanger,
struct sk_buff *pkt, u32 slot_id,
int *gen)
{
brcmf_dbg(TRACE, "enter\n");
*gen = 0xff;
if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS)
return -ENOENT;
if (hanger->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
brcmf_err("slot not in use\n");
return -EINVAL;
}
*gen = hanger->items[slot_id].gen;
return 0;
}
static void brcmf_fws_hanger_cleanup(struct brcmf_fws_hanger *h,
bool (*fn)(struct sk_buff *, void *),
int ifidx)
{
struct sk_buff *skb;
int i;
enum brcmf_fws_hanger_item_state s;
brcmf_dbg(TRACE, "enter: ifidx=%d\n", ifidx);
for (i = 0; i < ARRAY_SIZE(h->items); i++) {
s = h->items[i].state;
if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE ||
s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED) {
skb = h->items[i].pkt;
if (fn == NULL || fn(skb, &ifidx)) {
/* suppress packets freed from psq */
if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE)
brcmu_pkt_buf_free_skb(skb);
h->items[i].state =
BRCMF_FWS_HANGER_ITEM_STATE_FREE;
}
}
}
}
static void brcmf_fws_init_mac_descriptor(struct brcmf_fws_mac_descriptor *desc,
u8 *addr, u8 ifidx)
{
brcmf_dbg(TRACE, "enter: ea=%pM, ifidx=%u\n", addr, ifidx);
desc->occupied = 1;
desc->state = BRCMF_FWS_STATE_OPEN;
desc->requested_credit = 0;
/* depending on use may need ifp->bssidx instead */
desc->interface_id = ifidx;
desc->ac_bitmap = 0xff; /* update this when handling APSD */
memcpy(&desc->ea[0], addr, ETH_ALEN);
}
static
void brcmf_fws_clear_mac_descriptor(struct brcmf_fws_mac_descriptor *desc)
{
brcmf_dbg(TRACE,
"enter: ea=%pM, ifidx=%u\n", desc->ea, desc->interface_id);
desc->occupied = 0;
desc->state = BRCMF_FWS_STATE_CLOSE;
desc->requested_credit = 0;
}
static struct brcmf_fws_mac_descriptor *
brcmf_fws_mac_descriptor_lookup(struct brcmf_fws_info *fws, u8 *ea)
{
struct brcmf_fws_mac_descriptor *entry;
int i;
brcmf_dbg(TRACE, "enter: ea=%pM\n", ea);
if (ea == NULL)
return ERR_PTR(-EINVAL);
entry = &fws->nodes[0];
for (i = 0; i < ARRAY_SIZE(fws->nodes); i++) {
if (entry->occupied && !memcmp(entry->ea, ea, ETH_ALEN))
return entry;
entry++;
}
return ERR_PTR(-ENOENT);
}
static struct brcmf_fws_mac_descriptor*
brcmf_fws_find_mac_desc(struct brcmf_fws_info *fws, int ifidx, u8 *da)
{
struct brcmf_fws_mac_descriptor *entry = &fws->other;
struct brcmf_if *ifp;
bool multicast;
brcmf_dbg(TRACE, "enter: ifidx=%d\n", ifidx);
multicast = is_multicast_ether_addr(da);
ifp = fws->drvr->iflist[ifidx ? ifidx + 1 : 0];
if (WARN_ON(!ifp))
goto done;
/* Multicast destination and P2P clients get the interface entry.
* STA gets the interface entry if there is no exact match. For
* example, TDLS destinations have their own entry.
*/
entry = NULL;
if ((/* ifp->iftype == 0 ||*/ multicast) && ifp->fws_desc)
entry = ifp->fws_desc;
if (entry != NULL && multicast)
goto done;
entry = brcmf_fws_mac_descriptor_lookup(fws, da);
if (IS_ERR(entry))
entry = &fws->other;
done:
brcmf_dbg(TRACE, "exit: entry=%p\n", entry);
return entry;
}
static void brcmf_fws_mac_desc_cleanup(struct brcmf_fws_info *fws,
struct brcmf_fws_mac_descriptor *entry,
int ifidx)
{
brcmf_dbg(TRACE, "enter: entry=(ea=%pM, ifid=%d), ifidx=%d\n",
entry->ea, entry->interface_id, ifidx);
if (entry->occupied && (ifidx == -1 || ifidx == entry->interface_id)) {
brcmf_dbg(TRACE, "flush psq: ifidx=%d, qlen=%d\n",
ifidx, entry->psq.len);
brcmf_fws_psq_flush(fws, &entry->psq, ifidx);
entry->occupied = !!(entry->psq.len);
}
}
static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info *fws,
bool (*fn)(struct sk_buff *, void *),
int ifidx)
{
struct brcmf_fws_hanger_item *hi;
struct pktq *txq;
struct sk_buff *skb;
int prec;
u32 hslot;
brcmf_dbg(TRACE, "enter: ifidx=%d\n", ifidx);
txq = brcmf_bus_gettxq(fws->drvr->bus_if);
if (IS_ERR(txq)) {
brcmf_dbg(TRACE, "no txq to clean up\n");
return;
}
for (prec = 0; prec < txq->num_prec; prec++) {
skb = brcmu_pktq_pdeq_match(txq, prec, fn, &ifidx);
while (skb) {
hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
hi = &fws->hanger.items[hslot];
WARN_ON(skb != hi->pkt);
hi->state = BRCMF_FWS_HANGER_ITEM_STATE_FREE;
brcmu_pkt_buf_free_skb(skb);
skb = brcmu_pktq_pdeq_match(txq, prec, fn, &ifidx);
}
}
}
static void brcmf_fws_cleanup(struct brcmf_fws_info *fws, int ifidx)
{
int i;
struct brcmf_fws_mac_descriptor *table;
bool (*matchfn)(struct sk_buff *, void *) = NULL;
brcmf_dbg(TRACE, "enter: ifidx=%d\n", ifidx);
if (fws == NULL)
return;
if (ifidx != -1)
matchfn = brcmf_fws_ifidx_match;
/* cleanup individual nodes */
table = &fws->nodes[0];
for (i = 0; i < ARRAY_SIZE(fws->nodes); i++)
brcmf_fws_mac_desc_cleanup(fws, &table[i], ifidx);
brcmf_fws_mac_desc_cleanup(fws, &fws->other, ifidx);
brcmf_fws_bus_txq_cleanup(fws, matchfn, ifidx);
brcmf_fws_hanger_cleanup(&fws->hanger, matchfn, ifidx);
}
static int brcmf_fws_rssi_indicate(struct brcmf_fws_info *fws, s8 rssi)
{
brcmf_dbg(CTL, "rssi %d\n", rssi);
return 0;
}
static
int brcmf_fws_macdesc_indicate(struct brcmf_fws_info *fws, u8 type, u8 *data)
{
struct brcmf_fws_mac_descriptor *entry, *existing;
u8 mac_handle;
u8 ifidx;
u8 *addr;
mac_handle = *data++;
ifidx = *data++;
addr = data;
entry = &fws->nodes[mac_handle & 0x1F];
if (type == BRCMF_FWS_TYPE_MACDESC_DEL) {
brcmf_dbg(TRACE, "deleting mac %pM idx %d\n", addr, ifidx);
if (entry->occupied)
brcmf_fws_clear_mac_descriptor(entry);
else
fws->stats.mac_update_failed++;
return 0;
}
brcmf_dbg(TRACE,
"add mac %pM handle %u idx %d\n", addr, mac_handle, ifidx);
existing = brcmf_fws_mac_descriptor_lookup(fws, addr);
if (IS_ERR(existing)) {
if (!entry->occupied) {
entry->mac_handle = mac_handle;
brcmf_fws_init_mac_descriptor(entry, addr, ifidx);
brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT,
BRCMF_FWS_PSQ_LEN);
} else {
fws->stats.mac_update_failed++;
}
} else {
if (entry != existing) {
brcmf_dbg(TRACE, "relocate mac\n");
memcpy(entry, existing,
offsetof(struct brcmf_fws_mac_descriptor, psq));
entry->mac_handle = mac_handle;
brcmf_fws_clear_mac_descriptor(existing);
} else {
brcmf_dbg(TRACE, "use existing\n");
WARN_ON(entry->mac_handle != mac_handle);
/* TODO: what should we do here: continue, reinit, .. */
}
}
return 0;
}
static int
brcmf_fws_txstatus_process(struct brcmf_fws_info *fws, u8 flags, u32 hslot)
{
int ret;
struct sk_buff *skb;
struct brcmf_fws_mac_descriptor *entry = NULL;
brcmf_dbg(TRACE, "status: flags=0x%X, hslot=%d\n",
flags, hslot);
if (flags == BRCMF_FWS_TXSTATUS_DISCARD)
fws->stats.txs_discard++;
else if (flags == BRCMF_FWS_TXSTATUS_FW_TOSSED)
fws->stats.txs_tossed++;
else
brcmf_err("unexpected txstatus\n");
ret = brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb,
true);
if (ret != 0) {
brcmf_err("no packet in hanger slot: hslot=%d\n", hslot);
return ret;
}
entry = brcmf_skbcb(skb)->mac;
if (WARN_ON(!entry)) {
ret = -EINVAL;
goto done;
}
entry->transit_count--;
done:
brcmf_txfinalize(fws->drvr, skb, true);
return ret;
}
static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info *fws, u8 *data)
{
u32 status;
u32 hslot;
u8 flags;
fws->stats.txs_indicate++;
status = le32_to_cpu(*(__le32 *)data);
flags = brcmf_txstatus_get_field(status, FLAGS);
hslot = brcmf_txstatus_get_field(status, HSLOT);
return brcmf_fws_txstatus_process(fws, flags, hslot);
}
static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info *fws, u8 *data)
{
__le32 timestamp;
memcpy(×tamp, &data[2], sizeof(timestamp));
brcmf_dbg(INFO, "received: seq %d, timestamp %d\n", data[1],
le32_to_cpu(timestamp));
return 0;
}
/* using macro so sparse checking does not complain
* about locking imbalance.
*/
#define brcmf_fws_lock(drvr, flags) \
do { \
flags = 0; \
spin_lock_irqsave(&((drvr)->fws_spinlock), (flags)); \
} while (0)
/* using macro so sparse checking does not complain
* about locking imbalance.
*/
#define brcmf_fws_unlock(drvr, flags) \
spin_unlock_irqrestore(&((drvr)->fws_spinlock), (flags))
static int brcmf_fws_notify_credit_map(struct brcmf_if *ifp,
const struct brcmf_event_msg *e,
void *data)
{
struct brcmf_fws_info *fws = ifp->drvr->fws;
int i;
ulong flags;
u8 *credits = data;
brcmf_fws_lock(ifp->drvr, flags);
for (i = 0; i < ARRAY_SIZE(fws->fifo_credit); i++)
fws->fifo_credit[i] = *credits++;
brcmf_fws_unlock(ifp->drvr, flags);
return 0;
}
int brcmf_fws_init(struct brcmf_pub *drvr)
{
u32 tlv = 0;
int rc;
/* enable rssi signals */
if (drvr->fw_signals)
tlv = BRCMF_FWS_FLAGS_RSSI_SIGNALS |
BRCMF_FWS_FLAGS_XONXOFF_SIGNALS |
BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS;
spin_lock_init(&drvr->fws_spinlock);
drvr->fws = kzalloc(sizeof(*(drvr->fws)), GFP_KERNEL);
if (!drvr->fws) {
rc = -ENOMEM;
goto fail;
}
/* set linkage back */
drvr->fws->drvr = drvr;
drvr->fws->fcmode = fcmode;
/* enable proptxtstatus signaling by default */
rc = brcmf_fil_iovar_int_set(drvr->iflist[0], "tlv", tlv);
if (rc < 0) {
brcmf_err("failed to set bdcv2 tlv signaling\n");
goto fail;
}
if (brcmf_fweh_register(drvr, BRCMF_E_FIFO_CREDIT_MAP,
brcmf_fws_notify_credit_map)) {
brcmf_err("register credit map handler failed\n");
goto fail;
}
brcmf_fws_hanger_init(&drvr->fws->hanger);
/* create debugfs file for statistics */
brcmf_debugfs_create_fws_stats(drvr, &drvr->fws->stats);
/* TODO: remove upon feature delivery */
brcmf_err("%s bdcv2 tlv signaling [%x]\n",
drvr->fw_signals ? "enabled" : "disabled", tlv);
return 0;
fail:
/* disable flow control entirely */
drvr->fw_signals = false;
brcmf_fws_deinit(drvr);
return rc;
}
void brcmf_fws_deinit(struct brcmf_pub *drvr)
{
struct brcmf_fws_info *fws = drvr->fws;
ulong flags;
/* cleanup */
brcmf_fws_lock(drvr, flags);
brcmf_fws_cleanup(fws, -1);
drvr->fws = NULL;
brcmf_fws_unlock(drvr, flags);
/* free top structure */
kfree(fws);
}
int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
struct sk_buff *skb)
{
struct brcmf_fws_info *fws = drvr->fws;
ulong flags;
u8 *signal_data;
s16 data_len;
u8 type;
u8 len;
u8 *data;
brcmf_dbg(TRACE, "enter: ifidx %d, skblen %u, sig %d\n",
ifidx, skb->len, signal_len);
WARN_ON(signal_len > skb->len);
/* if flow control disabled, skip to packet data and leave */
if (!signal_len || !drvr->fw_signals) {
skb_pull(skb, signal_len);
return 0;
}
/* lock during tlv parsing */
brcmf_fws_lock(drvr, flags);
fws->stats.header_pulls++;
data_len = signal_len;
signal_data = skb->data;
while (data_len > 0) {
/* extract tlv info */
type = signal_data[0];
/* FILLER type is actually not a TLV, but
* a single byte that can be skipped.
*/
if (type == BRCMF_FWS_TYPE_FILLER) {
signal_data += 1;
data_len -= 1;
continue;
}
len = signal_data[1];
data = signal_data + 2;
brcmf_dbg(INFO, "tlv type=%d (%s), len=%d, data[0]=%d\n", type,
brcmf_fws_get_tlv_name(type), len, *data);
/* abort parsing when length invalid */
if (data_len < len + 2)
break;
if (len != brcmf_fws_get_tlv_len(fws, type))
break;
switch (type) {
case BRCMF_FWS_TYPE_MAC_OPEN:
case BRCMF_FWS_TYPE_MAC_CLOSE:
case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT:
case BRCMF_FWS_TYPE_PKTTAG:
case BRCMF_FWS_TYPE_INTERFACE_OPEN:
case BRCMF_FWS_TYPE_INTERFACE_CLOSE:
case BRCMF_FWS_TYPE_FIFO_CREDITBACK:
case BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP:
case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET:
case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS:
case BRCMF_FWS_TYPE_COMP_TXSTATUS:
break;
case BRCMF_FWS_TYPE_MACDESC_ADD:
case BRCMF_FWS_TYPE_MACDESC_DEL:
brcmf_fws_macdesc_indicate(fws, type, data);
break;
case BRCMF_FWS_TYPE_TXSTATUS:
brcmf_fws_txstatus_indicate(fws, data);
break;
case BRCMF_FWS_TYPE_RSSI:
brcmf_fws_rssi_indicate(fws, *data);
break;
case BRCMF_FWS_TYPE_TRANS_ID:
brcmf_fws_dbg_seqnum_check(fws, data);
break;
default:
fws->stats.tlv_invalid_type++;
break;
}
signal_data += len + 2;
data_len -= len + 2;
}
if (data_len != 0)
fws->stats.tlv_parse_failed++;
/* signalling processing result does
* not affect the actual ethernet packet.
*/
skb_pull(skb, signal_len);
/* this may be a signal-only packet
*/
if (skb->len == 0)
fws->stats.header_only_pkt++;
brcmf_fws_unlock(drvr, flags);
return 0;
}
static int brcmf_fws_hdrpush(struct brcmf_fws_info *fws, struct sk_buff *skb)
{
struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac;
u8 *wlh;
u16 data_offset;
u8 fillers;
__le32 pkttag = cpu_to_le32(brcmf_skbcb(skb)->htod);
brcmf_dbg(TRACE, "enter: ea=%pM, ifidx=%u, pkttag=0x%08X\n",
entry->ea, entry->interface_id, le32_to_cpu(pkttag));
/* +2 is for Type[1] and Len[1] in TLV, plus TIM signal */
data_offset = 2 + BRCMF_FWS_TYPE_PKTTAG_LEN;
fillers = round_up(data_offset, 4) - data_offset;
data_offset += fillers;
skb_push(skb, data_offset);
wlh = skb->data;
wlh[0] = BRCMF_FWS_TYPE_PKTTAG;
wlh[1] = BRCMF_FWS_TYPE_PKTTAG_LEN;
memcpy(&wlh[2], &pkttag, sizeof(pkttag));
wlh += BRCMF_FWS_TYPE_PKTTAG_LEN + 2;
if (fillers)
memset(wlh, BRCMF_FWS_TYPE_FILLER, fillers);
brcmf_proto_hdrpush(fws->drvr, brcmf_skb_if_flags_get_field(skb, INDEX),
data_offset >> 2, skb);
return 0;
}
static int brcmf_fws_precommit_skb(struct brcmf_fws_info *fws, int fifo,
struct sk_buff *p)
{
struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p);
struct brcmf_fws_mac_descriptor *entry = skcb->mac;
int rc = 0;
bool header_needed;
int hslot = BRCMF_FWS_HANGER_MAXITEMS;
u8 free_ctr;
u8 ifidx;
u8 flags;
header_needed = skcb->state == BRCMF_FWS_SKBSTATE_NEW;
if (header_needed) {
/* obtaining free slot may fail, but that will be caught
* by the hanger push. This assures the packet has a BDC
* header upon return.
*/
hslot = brcmf_fws_hanger_get_free_slot(&fws->hanger);
free_ctr = entry->seq[fifo];
brcmf_skb_htod_tag_set_field(p, HSLOT, hslot);
brcmf_skb_htod_tag_set_field(p, FREERUN, free_ctr);
brcmf_skb_htod_tag_set_field(p, GENERATION, 1);
entry->transit_count++;
}
brcmf_skb_if_flags_set_field(p, TRANSMIT, 1);
brcmf_skb_htod_tag_set_field(p, FIFO, fifo);
flags = BRCMF_FWS_HTOD_FLAG_PKTFROMHOST;
if (!(skcb->if_flags & BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK)) {
/*
Indicate that this packet is being sent in response to an
explicit request from the firmware side.
*/
flags |= BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED;
}
brcmf_skb_htod_tag_set_field(p, FLAGS, flags);
if (header_needed) {
brcmf_fws_hdrpush(fws, p);
rc = brcmf_fws_hanger_pushpkt(&fws->hanger, p, hslot);
if (rc)
brcmf_err("hanger push failed: rc=%d\n", rc);
} else {
int gen;
/* remove old header */
rc = brcmf_proto_hdrpull(fws->drvr, false, &ifidx, p);
if (rc == 0) {
hslot = brcmf_skb_htod_tag_get_field(p, HSLOT);
brcmf_fws_hanger_get_genbit(&fws->hanger, p,
hslot, &gen);
brcmf_skb_htod_tag_set_field(p, GENERATION, gen);
/* push new header */
brcmf_fws_hdrpush(fws, p);
}
}
return rc;
}
static int brcmf_fws_commit_skb(struct brcmf_fws_info *fws, int fifo,
struct sk_buff *skb)
{
struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb);
struct brcmf_fws_mac_descriptor *entry;
struct brcmf_bus *bus = fws->drvr->bus_if;
int rc;
entry = skcb->mac;
if (IS_ERR(entry))
return PTR_ERR(entry);
rc = brcmf_fws_precommit_skb(fws, fifo, skb);
if (rc < 0) {
fws->stats.generic_error++;
goto done;
}
rc = brcmf_bus_txdata(bus, skb);
if (rc < 0)
goto done;
entry->seq[fifo]++;
fws->stats.pkt2bus++;
return rc;
done:
brcmf_txfinalize(fws->drvr, skb, false);
return rc;
}
int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb)
{
struct brcmf_pub *drvr = ifp->drvr;
struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb);
struct ethhdr *eh = (struct ethhdr *)(skb->data);
ulong flags;
u8 ifidx = ifp->ifidx;
int fifo = BRCMF_FWS_FIFO_BCMC;
bool multicast = is_multicast_ether_addr(eh->h_dest);
/* determine the priority */
if (!skb->priority)
skb->priority = cfg80211_classify8021d(skb);
drvr->tx_multicast += !!multicast;
if (ntohs(eh->h_proto) == ETH_P_PAE)
atomic_inc(&ifp->pend_8021x_cnt);
if (!brcmf_fws_fc_active(drvr->fws)) {
/* If the protocol uses a data header, apply it */
brcmf_proto_hdrpush(drvr, ifidx, 0, skb);
/* Use bus module to send data frame */
return brcmf_bus_txdata(drvr->bus_if, skb);
}
/* set control buffer information */
skcb->mac = brcmf_fws_find_mac_desc(drvr->fws, ifidx, eh->h_dest);
skcb->state = BRCMF_FWS_SKBSTATE_NEW;
brcmf_skb_if_flags_set_field(skb, INDEX, ifidx);
if (!multicast)
fifo = brcmf_fws_prio2fifo[skb->priority];
brcmf_skb_if_flags_set_field(skb, FIFO, fifo);
brcmf_skb_if_flags_set_field(skb, CREDITCHECK, 0);
brcmf_dbg(TRACE, "ea=%pM, multi=%d, fifo=%d\n", eh->h_dest,
multicast, fifo);
brcmf_fws_lock(drvr, flags);
brcmf_fws_commit_skb(drvr->fws, fifo, skb);
brcmf_fws_unlock(drvr, flags);
return 0;
}
void brcmf_fws_reset_interface(struct brcmf_if *ifp)
{
struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc;
brcmf_dbg(TRACE, "enter: idx=%d\n", ifp->bssidx);
if (!entry)
return;
brcmf_fws_init_mac_descriptor(entry, ifp->mac_addr, ifp->ifidx);
}
void brcmf_fws_add_interface(struct brcmf_if *ifp)
{
struct brcmf_fws_mac_descriptor *entry;
brcmf_dbg(TRACE, "enter: idx=%d, mac=%pM\n",
ifp->bssidx, ifp->mac_addr);
if (!ifp->drvr->fw_signals)
return;
entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
if (entry) {
ifp->fws_desc = entry;
brcmf_fws_init_mac_descriptor(entry, ifp->mac_addr, ifp->ifidx);
brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT,
BRCMF_FWS_PSQ_LEN);
} else {
brcmf_err("no firmware signalling\n");
}
}
void brcmf_fws_del_interface(struct brcmf_if *ifp)
{
struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc;
brcmf_dbg(TRACE, "enter: idx=%d\n", ifp->bssidx);
if (!entry)
return;
ifp->fws_desc = NULL;
brcmf_fws_clear_mac_descriptor(entry);
brcmf_fws_cleanup(ifp->drvr->fws, ifp->ifidx);
kfree(entry);
}
bool brcmf_fws_fc_active(struct brcmf_fws_info *fws)
{
if (!fws)
return false;
brcmf_dbg(TRACE, "enter: mode=%d\n", fws->fcmode);
return fws->fcmode != BRCMF_FWS_FCMODE_NONE;
}
void brcmf_fws_bustxfail(struct brcmf_fws_info *fws, struct sk_buff *skb)
{
ulong flags;
brcmf_fws_lock(fws->drvr, flags);
brcmf_fws_txstatus_process(fws, BRCMF_FWS_TXSTATUS_FW_TOSSED,
brcmf_skb_htod_tag_get_field(skb, HSLOT));
brcmf_fws_unlock(fws->drvr, flags);
}
