Skip to content

L
linux
Commit 2b20920d authored by Stanislaw Gruszka's avatar Stanislaw Gruszka Committed by John W. Linville
Browse files
Options

iwlegacy: remove iwl-sta.c 

I forgot to remove this file before.
Signed-off-by: default avatarStanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent f6e8cb72
Hide whitespace changes
Inline Side-by-side
Showing with 0 additions and 817 deletions
drivers/net/wireless/iwlegacy/iwl-sta.c deleted 100644 → 0
View file @ f6e8cb72
/******************************************************************************
*
* Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
*
* Portions of this file are derived from the ipw3945 project, as well
* as portions of the ieee80211 subsystem header files.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
* The full GNU General Public License is included in this distribution in the
* file called LICENSE.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
*****************************************************************************/
#include <net/mac80211.h>
#include <linux/etherdevice.h>
#include <linux/sched.h>
#include <linux/lockdep.h>
#include <linux/export.h>
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-sta.h"
/* il->sta_lock must be held */
static void il_sta_ucode_activate(struct il_priv *il, u8 sta_id)
{
if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE))
IL_ERR(
"ACTIVATE a non DRIVER active station id %u addr %pM\n",
sta_id, il->stations[sta_id].sta.sta.addr);
if (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) {
D_ASSOC(
"STA id %u addr %pM already present"
" in uCode (according to driver)\n",
sta_id, il->stations[sta_id].sta.sta.addr);
} else {
il->stations[sta_id].used |= IL_STA_UCODE_ACTIVE;
D_ASSOC("Added STA id %u addr %pM to uCode\n",
sta_id, il->stations[sta_id].sta.sta.addr);
}
}
static int il_process_add_sta_resp(struct il_priv *il,
struct il_addsta_cmd *addsta,
struct il_rx_pkt *pkt,
bool sync)
{
u8 sta_id = addsta->sta.sta_id;
unsigned long flags;
int ret = -EIO;
if (pkt->hdr.flags & IL_CMD_FAILED_MSK) {
IL_ERR("Bad return from C_ADD_STA (0x%08X)\n",
pkt->hdr.flags);
return ret;
}
D_INFO("Processing response for adding station %u\n",
sta_id);
spin_lock_irqsave(&il->sta_lock, flags);
switch (pkt->u.add_sta.status) {
case ADD_STA_SUCCESS_MSK:
D_INFO("C_ADD_STA PASSED\n");
il_sta_ucode_activate(il, sta_id);
ret = 0;
break;
case ADD_STA_NO_ROOM_IN_TBL:
IL_ERR("Adding station %d failed, no room in table.\n",
sta_id);
break;
case ADD_STA_NO_BLOCK_ACK_RESOURCE:
IL_ERR(
"Adding station %d failed, no block ack resource.\n",
sta_id);
break;
case ADD_STA_MODIFY_NON_EXIST_STA:
IL_ERR("Attempting to modify non-existing station %d\n",
sta_id);
break;
default:
D_ASSOC("Received C_ADD_STA:(0x%08X)\n",
pkt->u.add_sta.status);
break;
}
D_INFO("%s station id %u addr %pM\n",
il->stations[sta_id].sta.mode ==
STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
sta_id, il->stations[sta_id].sta.sta.addr);
/*
* XXX: The MAC address in the command buffer is often changed from
* the original sent to the device. That is, the MAC address
* written to the command buffer often is not the same MAC address
* read from the command buffer when the command returns. This
* issue has not yet been resolved and this debugging is left to
* observe the problem.
*/
D_INFO("%s station according to cmd buffer %pM\n",
il->stations[sta_id].sta.mode ==
STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
addsta->sta.addr);
spin_unlock_irqrestore(&il->sta_lock, flags);
return ret;
}
static void il_add_sta_callback(struct il_priv *il,
struct il_device_cmd *cmd,
struct il_rx_pkt *pkt)
{
struct il_addsta_cmd *addsta =
(struct il_addsta_cmd *)cmd->cmd.payload;
il_process_add_sta_resp(il, addsta, pkt, false);
}
int il_send_add_sta(struct il_priv *il,
struct il_addsta_cmd *sta, u8 flags)
{
struct il_rx_pkt *pkt = NULL;
int ret = 0;
u8 data[sizeof(*sta)];
struct il_host_cmd cmd = {
.id = C_ADD_STA,
.flags = flags,
.data = data,
};
u8 sta_id __maybe_unused = sta->sta.sta_id;
D_INFO("Adding sta %u (%pM) %ssynchronously\n",
sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : "");
if (flags & CMD_ASYNC)
cmd.callback = il_add_sta_callback;
else {
cmd.flags |= CMD_WANT_SKB;
might_sleep();
}
cmd.len = il->cfg->ops->utils->build_addsta_hcmd(sta, data);
ret = il_send_cmd(il, &cmd);
if (ret || (flags & CMD_ASYNC))
return ret;
if (ret == 0) {
pkt = (struct il_rx_pkt *)cmd.reply_page;
ret = il_process_add_sta_resp(il, sta, pkt, true);
}
il_free_pages(il, cmd.reply_page);
return ret;
}
EXPORT_SYMBOL(il_send_add_sta);
static void il_set_ht_add_station(struct il_priv *il, u8 idx,
struct ieee80211_sta *sta,
struct il_rxon_context *ctx)
{
struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap;
__le32 sta_flags;
u8 mimo_ps_mode;
if (!sta || !sta_ht_inf->ht_supported)
goto done;
mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
D_ASSOC("spatial multiplexing power save mode: %s\n",
(mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
"static" :
(mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
"dynamic" : "disabled");
sta_flags = il->stations[idx].sta.station_flags;
sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
switch (mimo_ps_mode) {
case WLAN_HT_CAP_SM_PS_STATIC:
sta_flags |= STA_FLG_MIMO_DIS_MSK;
break;
case WLAN_HT_CAP_SM_PS_DYNAMIC:
sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
break;
case WLAN_HT_CAP_SM_PS_DISABLED:
break;
default:
IL_WARN("Invalid MIMO PS mode %d\n", mimo_ps_mode);
break;
}
sta_flags |= cpu_to_le32(
(u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
sta_flags |= cpu_to_le32(
(u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
if (il_is_ht40_tx_allowed(il, ctx, &sta->ht_cap))
sta_flags |= STA_FLG_HT40_EN_MSK;
else
sta_flags &= ~STA_FLG_HT40_EN_MSK;
il->stations[idx].sta.station_flags = sta_flags;
done:
return;
}
/**
* il_prep_station - Prepare station information for addition
*
* should be called with sta_lock held
*/
u8 il_prep_station(struct il_priv *il, struct il_rxon_context *ctx,
const u8 *addr, bool is_ap, struct ieee80211_sta *sta)
{
struct il_station_entry *station;
int i;
u8 sta_id = IL_INVALID_STATION;
u16 rate;
if (is_ap)
sta_id = ctx->ap_sta_id;
else if (is_broadcast_ether_addr(addr))
sta_id = ctx->bcast_sta_id;
else
for (i = IL_STA_ID; i < il->hw_params.max_stations; i++) {
if (!compare_ether_addr(il->stations[i].sta.sta.addr,
addr)) {
sta_id = i;
break;
}
if (!il->stations[i].used &&
sta_id == IL_INVALID_STATION)
sta_id = i;
}
/*
* These two conditions have the same outcome, but keep them
* separate
*/
if (unlikely(sta_id == IL_INVALID_STATION))
return sta_id;
/*
* uCode is not able to deal with multiple requests to add a
* station. Keep track if one is in progress so that we do not send
* another.
*/
if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) {
D_INFO(
"STA %d already in process of being added.\n",
sta_id);
return sta_id;
}
if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) &&
(il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) &&
!compare_ether_addr(il->stations[sta_id].sta.sta.addr, addr)) {
D_ASSOC(
"STA %d (%pM) already added, not adding again.\n",
sta_id, addr);
return sta_id;
}
station = &il->stations[sta_id];
station->used = IL_STA_DRIVER_ACTIVE;
D_ASSOC("Add STA to driver ID %d: %pM\n",
sta_id, addr);
il->num_stations++;
/* Set up the C_ADD_STA command to send to device */
memset(&station->sta, 0, sizeof(struct il_addsta_cmd));
memcpy(station->sta.sta.addr, addr, ETH_ALEN);
station->sta.mode = 0;
station->sta.sta.sta_id = sta_id;
station->sta.station_flags = ctx->station_flags;
station->ctxid = ctx->ctxid;
if (sta) {
struct il_station_priv_common *sta_priv;
sta_priv = (void *)sta->drv_priv;
sta_priv->ctx = ctx;
}
/*
* OK to call unconditionally, since local stations (IBSS BSSID
* STA and broadcast STA) pass in a NULL sta, and mac80211
* doesn't allow HT IBSS.
*/
il_set_ht_add_station(il, sta_id, sta, ctx);
/* 3945 only */
rate = (il->band == IEEE80211_BAND_5GHZ) ?
RATE_6M_PLCP : RATE_1M_PLCP;
/* Turn on both antennas for the station... */
station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK);
return sta_id;
}
EXPORT_SYMBOL_GPL(il_prep_station);
#define STA_WAIT_TIMEOUT (HZ/2)
/**
* il_add_station_common -
*/
int
il_add_station_common(struct il_priv *il,
struct il_rxon_context *ctx,
const u8 *addr, bool is_ap,
struct ieee80211_sta *sta, u8 *sta_id_r)
{
unsigned long flags_spin;
int ret = 0;
u8 sta_id;
struct il_addsta_cmd sta_cmd;
*sta_id_r = 0;
spin_lock_irqsave(&il->sta_lock, flags_spin);
sta_id = il_prep_station(il, ctx, addr, is_ap, sta);
if (sta_id == IL_INVALID_STATION) {
IL_ERR("Unable to prepare station %pM for addition\n",
addr);
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
return -EINVAL;
}
/*
* uCode is not able to deal with multiple requests to add a
* station. Keep track if one is in progress so that we do not send
* another.
*/
if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) {
D_INFO(
"STA %d already in process of being added.\n",
sta_id);
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
return -EEXIST;
}
if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) &&
(il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) {
D_ASSOC(
"STA %d (%pM) already added, not adding again.\n",
sta_id, addr);
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
return -EEXIST;
}
il->stations[sta_id].used |= IL_STA_UCODE_INPROGRESS;
memcpy(&sta_cmd, &il->stations[sta_id].sta,
sizeof(struct il_addsta_cmd));
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
/* Add station to device's station table */
ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC);
if (ret) {
spin_lock_irqsave(&il->sta_lock, flags_spin);
IL_ERR("Adding station %pM failed.\n",
il->stations[sta_id].sta.sta.addr);
il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE;
il->stations[sta_id].used &= ~IL_STA_UCODE_INPROGRESS;
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
}
*sta_id_r = sta_id;
return ret;
}
EXPORT_SYMBOL(il_add_station_common);
/**
* il_sta_ucode_deactivate - deactivate ucode status for a station
*
* il->sta_lock must be held
*/
static void il_sta_ucode_deactivate(struct il_priv *il, u8 sta_id)
{
/* Ucode must be active and driver must be non active */
if ((il->stations[sta_id].used &
(IL_STA_UCODE_ACTIVE | IL_STA_DRIVER_ACTIVE)) !=
IL_STA_UCODE_ACTIVE)
IL_ERR("removed non active STA %u\n", sta_id);
il->stations[sta_id].used &= ~IL_STA_UCODE_ACTIVE;
memset(&il->stations[sta_id], 0, sizeof(struct il_station_entry));
D_ASSOC("Removed STA %u\n", sta_id);
}
static int il_send_remove_station(struct il_priv *il,
const u8 *addr, int sta_id,
bool temporary)
{
struct il_rx_pkt *pkt;
int ret;
unsigned long flags_spin;
struct il_rem_sta_cmd rm_sta_cmd;
struct il_host_cmd cmd = {
.id = C_REM_STA,
.len = sizeof(struct il_rem_sta_cmd),
.flags = CMD_SYNC,
.data = &rm_sta_cmd,
};
memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
rm_sta_cmd.num_sta = 1;
memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN);
cmd.flags |= CMD_WANT_SKB;
ret = il_send_cmd(il, &cmd);
if (ret)
return ret;
pkt = (struct il_rx_pkt *)cmd.reply_page;
if (pkt->hdr.flags & IL_CMD_FAILED_MSK) {
IL_ERR("Bad return from C_REM_STA (0x%08X)\n",
pkt->hdr.flags);
ret = -EIO;
}
if (!ret) {
switch (pkt->u.rem_sta.status) {
case REM_STA_SUCCESS_MSK:
if (!temporary) {
spin_lock_irqsave(&il->sta_lock, flags_spin);
il_sta_ucode_deactivate(il, sta_id);
spin_unlock_irqrestore(&il->sta_lock,
flags_spin);
}
D_ASSOC("C_REM_STA PASSED\n");
break;
default:
ret = -EIO;
IL_ERR("C_REM_STA failed\n");
break;
}
}
il_free_pages(il, cmd.reply_page);
return ret;
}
/**
* il_remove_station - Remove driver's knowledge of station.
*/
int il_remove_station(struct il_priv *il, const u8 sta_id,
const u8 *addr)
{
unsigned long flags;
if (!il_is_ready(il)) {
D_INFO(
"Unable to remove station %pM, device not ready.\n",
addr);
/*
* It is typical for stations to be removed when we are
* going down. Return success since device will be down
* soon anyway
*/
return 0;
}
D_ASSOC("Removing STA from driver:%d %pM\n",
sta_id, addr);
if (WARN_ON(sta_id == IL_INVALID_STATION))
return -EINVAL;
spin_lock_irqsave(&il->sta_lock, flags);
if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE)) {
D_INFO("Removing %pM but non DRIVER active\n",
addr);
goto out_err;
}
if (!(il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) {
D_INFO("Removing %pM but non UCODE active\n",
addr);
goto out_err;
}
if (il->stations[sta_id].used & IL_STA_LOCAL) {
kfree(il->stations[sta_id].lq);
il->stations[sta_id].lq = NULL;
}
il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE;
il->num_stations--;
BUG_ON(il->num_stations < 0);
spin_unlock_irqrestore(&il->sta_lock, flags);
return il_send_remove_station(il, addr, sta_id, false);
out_err:
spin_unlock_irqrestore(&il->sta_lock, flags);
return -EINVAL;
}
EXPORT_SYMBOL_GPL(il_remove_station);
/**
* il_clear_ucode_stations - clear ucode station table bits
*
* This function clears all the bits in the driver indicating
* which stations are active in the ucode. Call when something
* other than explicit station management would cause this in
* the ucode, e.g. unassociated RXON.
*/
void il_clear_ucode_stations(struct il_priv *il,
struct il_rxon_context *ctx)
{
int i;
unsigned long flags_spin;
bool cleared = false;
D_INFO("Clearing ucode stations in driver\n");
spin_lock_irqsave(&il->sta_lock, flags_spin);
for (i = 0; i < il->hw_params.max_stations; i++) {
if (ctx && ctx->ctxid != il->stations[i].ctxid)
continue;
if (il->stations[i].used & IL_STA_UCODE_ACTIVE) {
D_INFO(
"Clearing ucode active for station %d\n", i);
il->stations[i].used &= ~IL_STA_UCODE_ACTIVE;
cleared = true;
}
}
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
if (!cleared)
D_INFO(
"No active stations found to be cleared\n");
}
EXPORT_SYMBOL(il_clear_ucode_stations);
/**
* il_restore_stations() - Restore driver known stations to device
*
* All stations considered active by driver, but not present in ucode, is
* restored.
*
* Function sleeps.
*/
void
il_restore_stations(struct il_priv *il, struct il_rxon_context *ctx)
{
struct il_addsta_cmd sta_cmd;
struct il_link_quality_cmd lq;
unsigned long flags_spin;
int i;
bool found = false;
int ret;
bool send_lq;
if (!il_is_ready(il)) {
D_INFO(
"Not ready yet, not restoring any stations.\n");
return;
}
D_ASSOC("Restoring all known stations ... start.\n");
spin_lock_irqsave(&il->sta_lock, flags_spin);
for (i = 0; i < il->hw_params.max_stations; i++) {
if (ctx->ctxid != il->stations[i].ctxid)
continue;
if ((il->stations[i].used & IL_STA_DRIVER_ACTIVE) &&
!(il->stations[i].used & IL_STA_UCODE_ACTIVE)) {
D_ASSOC("Restoring sta %pM\n",
il->stations[i].sta.sta.addr);
il->stations[i].sta.mode = 0;
il->stations[i].used |= IL_STA_UCODE_INPROGRESS;
found = true;
}
}
for (i = 0; i < il->hw_params.max_stations; i++) {
if ((il->stations[i].used & IL_STA_UCODE_INPROGRESS)) {
memcpy(&sta_cmd, &il->stations[i].sta,
sizeof(struct il_addsta_cmd));
send_lq = false;
if (il->stations[i].lq) {
memcpy(&lq, il->stations[i].lq,
sizeof(struct il_link_quality_cmd));
send_lq = true;
}
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC);
if (ret) {
spin_lock_irqsave(&il->sta_lock, flags_spin);
IL_ERR("Adding station %pM failed.\n",
il->stations[i].sta.sta.addr);
il->stations[i].used &=
~IL_STA_DRIVER_ACTIVE;
il->stations[i].used &=
~IL_STA_UCODE_INPROGRESS;
spin_unlock_irqrestore(&il->sta_lock,
flags_spin);
}
/*
* Rate scaling has already been initialized, send
* current LQ command
*/
if (send_lq)
il_send_lq_cmd(il, ctx, &lq,
CMD_SYNC, true);
spin_lock_irqsave(&il->sta_lock, flags_spin);
il->stations[i].used &= ~IL_STA_UCODE_INPROGRESS;
}
}
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
if (!found)
D_INFO("Restoring all known stations"
" .... no stations to be restored.\n");
else
D_INFO("Restoring all known stations"
" .... complete.\n");
}
EXPORT_SYMBOL(il_restore_stations);
int il_get_free_ucode_key_idx(struct il_priv *il)
{
int i;
for (i = 0; i < il->sta_key_max_num; i++)
if (!test_and_set_bit(i, &il->ucode_key_table))
return i;
return WEP_INVALID_OFFSET;
}
EXPORT_SYMBOL(il_get_free_ucode_key_idx);
void il_dealloc_bcast_stations(struct il_priv *il)
{
unsigned long flags;
int i;
spin_lock_irqsave(&il->sta_lock, flags);
for (i = 0; i < il->hw_params.max_stations; i++) {
if (!(il->stations[i].used & IL_STA_BCAST))
continue;
il->stations[i].used &= ~IL_STA_UCODE_ACTIVE;
il->num_stations--;
BUG_ON(il->num_stations < 0);
kfree(il->stations[i].lq);
il->stations[i].lq = NULL;
}
spin_unlock_irqrestore(&il->sta_lock, flags);
}
EXPORT_SYMBOL_GPL(il_dealloc_bcast_stations);
#ifdef CONFIG_IWLEGACY_DEBUG
static void il_dump_lq_cmd(struct il_priv *il,
struct il_link_quality_cmd *lq)
{
int i;
D_RATE("lq station id 0x%x\n", lq->sta_id);
D_RATE("lq ant 0x%X 0x%X\n",
lq->general_params.single_stream_ant_msk,
lq->general_params.dual_stream_ant_msk);
for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
D_RATE("lq idx %d 0x%X\n",
i, lq->rs_table[i].rate_n_flags);
}
#else
static inline void il_dump_lq_cmd(struct il_priv *il,
struct il_link_quality_cmd *lq)
{
}
#endif
/**
* il_is_lq_table_valid() - Test one aspect of LQ cmd for validity
*
* It sometimes happens when a HT rate has been in use and we
* loose connectivity with AP then mac80211 will first tell us that the
* current channel is not HT anymore before removing the station. In such a
* scenario the RXON flags will be updated to indicate we are not
* communicating HT anymore, but the LQ command may still contain HT rates.
* Test for this to prevent driver from sending LQ command between the time
* RXON flags are updated and when LQ command is updated.
*/
static bool il_is_lq_table_valid(struct il_priv *il,
struct il_rxon_context *ctx,
struct il_link_quality_cmd *lq)
{
int i;
if (ctx->ht.enabled)
return true;
D_INFO("Channel %u is not an HT channel\n",
ctx->active.channel);
for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
if (le32_to_cpu(lq->rs_table[i].rate_n_flags) &
RATE_MCS_HT_MSK) {
D_INFO(
"idx %d of LQ expects HT channel\n",
i);
return false;
}
}
return true;
}
/**
* il_send_lq_cmd() - Send link quality command
* @init: This command is sent as part of station initialization right
* after station has been added.
*
* The link quality command is sent as the last step of station creation.
* This is the special case in which init is set and we call a callback in
* this case to clear the state indicating that station creation is in
* progress.
*/
int il_send_lq_cmd(struct il_priv *il, struct il_rxon_context *ctx,
struct il_link_quality_cmd *lq, u8 flags, bool init)
{
int ret = 0;
unsigned long flags_spin;
struct il_host_cmd cmd = {
.id = C_TX_LINK_QUALITY_CMD,
.len = sizeof(struct il_link_quality_cmd),
.flags = flags,
.data = lq,
};
if (WARN_ON(lq->sta_id == IL_INVALID_STATION))
return -EINVAL;
spin_lock_irqsave(&il->sta_lock, flags_spin);
if (!(il->stations[lq->sta_id].used & IL_STA_DRIVER_ACTIVE)) {
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
return -EINVAL;
}
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
il_dump_lq_cmd(il, lq);
BUG_ON(init && (cmd.flags & CMD_ASYNC));
if (il_is_lq_table_valid(il, ctx, lq))
ret = il_send_cmd(il, &cmd);
else
ret = -EINVAL;
if (cmd.flags & CMD_ASYNC)
return ret;
if (init) {
D_INFO("init LQ command complete,"
" clearing sta addition status for sta %d\n",
lq->sta_id);
spin_lock_irqsave(&il->sta_lock, flags_spin);
il->stations[lq->sta_id].used &= ~IL_STA_UCODE_INPROGRESS;
spin_unlock_irqrestore(&il->sta_lock, flags_spin);
}
return ret;
}
EXPORT_SYMBOL(il_send_lq_cmd);
int il_mac_sta_remove(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct il_priv *il = hw->priv;
struct il_station_priv_common *sta_common = (void *)sta->drv_priv;
int ret;
D_INFO("received request to remove station %pM\n",
sta->addr);
mutex_lock(&il->mutex);
D_INFO("proceeding to remove station %pM\n",
sta->addr);
ret = il_remove_station(il, sta_common->sta_id, sta->addr);
if (ret)
IL_ERR("Error removing station %pM\n",
sta->addr);
mutex_unlock(&il->mutex);
return ret;
}
EXPORT_SYMBOL(il_mac_sta_remove);
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7