1 /******************************************************************************
3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
29 #include <linux/etherdevice.h>
30 #include <net/mac80211.h>
31 #include "iwl-trans.h"
35 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
37 static int iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
39 lockdep_assert_held(&priv->sta_lock);
41 if (sta_id >= IWLAGN_STATION_COUNT) {
42 IWL_ERR(priv, "invalid sta_id %u", sta_id);
45 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
46 IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u "
48 sta_id, priv->stations[sta_id].sta.sta.addr);
50 if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) {
52 "STA id %u addr %pM already present in uCode "
53 "(according to driver)\n",
54 sta_id, priv->stations[sta_id].sta.sta.addr);
56 priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
57 IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n",
58 sta_id, priv->stations[sta_id].sta.sta.addr);
63 static int iwl_process_add_sta_resp(struct iwl_priv *priv,
64 struct iwl_addsta_cmd *addsta,
65 struct iwl_rx_packet *pkt)
67 struct iwl_add_sta_resp *add_sta_resp = (void *)pkt->data;
68 u8 sta_id = addsta->sta.sta_id;
71 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
72 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
77 IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n",
80 spin_lock(&priv->sta_lock);
82 switch (add_sta_resp->status) {
83 case ADD_STA_SUCCESS_MSK:
84 IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
85 ret = iwl_sta_ucode_activate(priv, sta_id);
87 case ADD_STA_NO_ROOM_IN_TABLE:
88 IWL_ERR(priv, "Adding station %d failed, no room in table.\n",
91 case ADD_STA_NO_BLOCK_ACK_RESOURCE:
92 IWL_ERR(priv, "Adding station %d failed, no block ack "
93 "resource.\n", sta_id);
95 case ADD_STA_MODIFY_NON_EXIST_STA:
96 IWL_ERR(priv, "Attempting to modify non-existing station %d\n",
100 IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
101 add_sta_resp->status);
105 IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n",
106 priv->stations[sta_id].sta.mode ==
107 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
108 sta_id, priv->stations[sta_id].sta.sta.addr);
111 * XXX: The MAC address in the command buffer is often changed from
112 * the original sent to the device. That is, the MAC address
113 * written to the command buffer often is not the same MAC address
114 * read from the command buffer when the command returns. This
115 * issue has not yet been resolved and this debugging is left to
116 * observe the problem.
118 IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n",
119 priv->stations[sta_id].sta.mode ==
120 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
122 spin_unlock(&priv->sta_lock);
127 int iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb,
128 struct iwl_device_cmd *cmd)
130 struct iwl_rx_packet *pkt = rxb_addr(rxb);
135 return iwl_process_add_sta_resp(priv, (void *)cmd->payload, pkt);
138 int iwl_send_add_sta(struct iwl_priv *priv,
139 struct iwl_addsta_cmd *sta, u8 flags)
142 struct iwl_host_cmd cmd = {
146 .len = { sizeof(*sta), },
148 u8 sta_id __maybe_unused = sta->sta.sta_id;
150 IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n",
151 sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : "");
153 if (!(flags & CMD_ASYNC)) {
154 cmd.flags |= CMD_WANT_SKB | CMD_WANT_HCMD;
158 ret = iwl_dvm_send_cmd(priv, &cmd);
160 if (ret || (flags & CMD_ASYNC))
162 /*else the command was successfully sent in SYNC mode, need to free
167 if (cmd.handler_status)
168 IWL_ERR(priv, "%s - error in the CMD response %d", __func__,
171 return cmd.handler_status;
174 bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
175 struct iwl_rxon_context *ctx,
176 struct ieee80211_sta_ht_cap *ht_cap)
178 if (!ctx->ht.enabled || !ctx->ht.is_40mhz)
181 #ifdef CONFIG_IWLWIFI_DEBUGFS
182 if (priv->disable_ht40)
187 * Remainder of this function checks ht_cap, but if it's
188 * NULL then we can do HT40 (special case for RXON)
193 if (!ht_cap->ht_supported)
196 if (!(ht_cap->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
202 static void iwl_sta_calc_ht_flags(struct iwl_priv *priv,
203 struct ieee80211_sta *sta,
204 struct iwl_rxon_context *ctx,
205 __le32 *flags, __le32 *mask)
207 struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap;
210 *mask = STA_FLG_RTS_MIMO_PROT_MSK |
211 STA_FLG_MIMO_DIS_MSK |
212 STA_FLG_HT40_EN_MSK |
213 STA_FLG_MAX_AGG_SIZE_MSK |
214 STA_FLG_AGG_MPDU_DENSITY_MSK;
217 if (!sta || !sta_ht_inf->ht_supported)
220 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
222 IWL_DEBUG_INFO(priv, "STA %pM SM PS mode: %s\n",
224 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
226 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
227 "dynamic" : "disabled");
229 switch (mimo_ps_mode) {
230 case WLAN_HT_CAP_SM_PS_STATIC:
231 *flags |= STA_FLG_MIMO_DIS_MSK;
233 case WLAN_HT_CAP_SM_PS_DYNAMIC:
234 *flags |= STA_FLG_RTS_MIMO_PROT_MSK;
236 case WLAN_HT_CAP_SM_PS_DISABLED:
239 IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
243 *flags |= cpu_to_le32(
244 (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
246 *flags |= cpu_to_le32(
247 (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
249 if (iwl_is_ht40_tx_allowed(priv, ctx, &sta->ht_cap))
250 *flags |= STA_FLG_HT40_EN_MSK;
253 int iwl_sta_update_ht(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
254 struct ieee80211_sta *sta)
256 u8 sta_id = iwl_sta_id(sta);
258 struct iwl_addsta_cmd cmd;
260 if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION))
263 iwl_sta_calc_ht_flags(priv, sta, ctx, &flags, &mask);
265 spin_lock_bh(&priv->sta_lock);
266 priv->stations[sta_id].sta.station_flags &= ~mask;
267 priv->stations[sta_id].sta.station_flags |= flags;
268 spin_unlock_bh(&priv->sta_lock);
270 memset(&cmd, 0, sizeof(cmd));
271 cmd.mode = STA_CONTROL_MODIFY_MSK;
272 cmd.station_flags_msk = mask;
273 cmd.station_flags = flags;
274 cmd.sta.sta_id = sta_id;
276 return iwl_send_add_sta(priv, &cmd, CMD_SYNC);
279 static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
280 struct ieee80211_sta *sta,
281 struct iwl_rxon_context *ctx)
285 iwl_sta_calc_ht_flags(priv, sta, ctx, &flags, &mask);
287 lockdep_assert_held(&priv->sta_lock);
288 priv->stations[index].sta.station_flags &= ~mask;
289 priv->stations[index].sta.station_flags |= flags;
293 * iwl_prep_station - Prepare station information for addition
295 * should be called with sta_lock held
297 u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
298 const u8 *addr, bool is_ap, struct ieee80211_sta *sta)
300 struct iwl_station_entry *station;
302 u8 sta_id = IWL_INVALID_STATION;
305 sta_id = ctx->ap_sta_id;
306 else if (is_broadcast_ether_addr(addr))
307 sta_id = ctx->bcast_sta_id;
309 for (i = IWL_STA_ID; i < IWLAGN_STATION_COUNT; i++) {
310 if (ether_addr_equal(priv->stations[i].sta.sta.addr,
316 if (!priv->stations[i].used &&
317 sta_id == IWL_INVALID_STATION)
322 * These two conditions have the same outcome, but keep them
325 if (unlikely(sta_id == IWL_INVALID_STATION))
329 * uCode is not able to deal with multiple requests to add a
330 * station. Keep track if one is in progress so that we do not send
333 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
334 IWL_DEBUG_INFO(priv, "STA %d already in process of being "
339 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
340 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) &&
341 ether_addr_equal(priv->stations[sta_id].sta.sta.addr, addr)) {
342 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not "
343 "adding again.\n", sta_id, addr);
347 station = &priv->stations[sta_id];
348 station->used = IWL_STA_DRIVER_ACTIVE;
349 IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
351 priv->num_stations++;
353 /* Set up the REPLY_ADD_STA command to send to device */
354 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
355 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
356 station->sta.mode = 0;
357 station->sta.sta.sta_id = sta_id;
358 station->sta.station_flags = ctx->station_flags;
359 station->ctxid = ctx->ctxid;
362 struct iwl_station_priv *sta_priv;
364 sta_priv = (void *)sta->drv_priv;
369 * OK to call unconditionally, since local stations (IBSS BSSID
370 * STA and broadcast STA) pass in a NULL sta, and mac80211
371 * doesn't allow HT IBSS.
373 iwl_set_ht_add_station(priv, sta_id, sta, ctx);
379 #define STA_WAIT_TIMEOUT (HZ/2)
382 * iwl_add_station_common -
384 int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
385 const u8 *addr, bool is_ap,
386 struct ieee80211_sta *sta, u8 *sta_id_r)
390 struct iwl_addsta_cmd sta_cmd;
393 spin_lock_bh(&priv->sta_lock);
394 sta_id = iwl_prep_station(priv, ctx, addr, is_ap, sta);
395 if (sta_id == IWL_INVALID_STATION) {
396 IWL_ERR(priv, "Unable to prepare station %pM for addition\n",
398 spin_unlock_bh(&priv->sta_lock);
403 * uCode is not able to deal with multiple requests to add a
404 * station. Keep track if one is in progress so that we do not send
407 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
408 IWL_DEBUG_INFO(priv, "STA %d already in process of being "
410 spin_unlock_bh(&priv->sta_lock);
414 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
415 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
416 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not "
417 "adding again.\n", sta_id, addr);
418 spin_unlock_bh(&priv->sta_lock);
422 priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS;
423 memcpy(&sta_cmd, &priv->stations[sta_id].sta,
424 sizeof(struct iwl_addsta_cmd));
425 spin_unlock_bh(&priv->sta_lock);
427 /* Add station to device's station table */
428 ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
430 spin_lock_bh(&priv->sta_lock);
431 IWL_ERR(priv, "Adding station %pM failed.\n",
432 priv->stations[sta_id].sta.sta.addr);
433 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
434 priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
435 spin_unlock_bh(&priv->sta_lock);
442 * iwl_sta_ucode_deactivate - deactivate ucode status for a station
444 static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id)
446 lockdep_assert_held(&priv->sta_lock);
448 /* Ucode must be active and driver must be non active */
449 if ((priv->stations[sta_id].used &
450 (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) !=
451 IWL_STA_UCODE_ACTIVE)
452 IWL_ERR(priv, "removed non active STA %u\n", sta_id);
454 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
456 memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
457 IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id);
460 static int iwl_send_remove_station(struct iwl_priv *priv,
461 const u8 *addr, int sta_id,
464 struct iwl_rx_packet *pkt;
466 struct iwl_rem_sta_cmd rm_sta_cmd;
468 struct iwl_host_cmd cmd = {
469 .id = REPLY_REMOVE_STA,
470 .len = { sizeof(struct iwl_rem_sta_cmd), },
472 .data = { &rm_sta_cmd, },
475 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
476 rm_sta_cmd.num_sta = 1;
477 memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN);
479 cmd.flags |= CMD_WANT_SKB;
481 ret = iwl_dvm_send_cmd(priv, &cmd);
487 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
488 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
494 struct iwl_rem_sta_resp *rem_sta_resp = (void *)pkt->data;
495 switch (rem_sta_resp->status) {
496 case REM_STA_SUCCESS_MSK:
498 spin_lock_bh(&priv->sta_lock);
499 iwl_sta_ucode_deactivate(priv, sta_id);
500 spin_unlock_bh(&priv->sta_lock);
502 IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
506 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
516 * iwl_remove_station - Remove driver's knowledge of station.
518 int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
523 if (!iwl_is_ready(priv)) {
525 "Unable to remove station %pM, device not ready.\n",
528 * It is typical for stations to be removed when we are
529 * going down. Return success since device will be down
535 IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
538 if (WARN_ON(sta_id == IWL_INVALID_STATION))
541 spin_lock_bh(&priv->sta_lock);
543 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
544 IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n",
549 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
550 IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n",
555 if (priv->stations[sta_id].used & IWL_STA_LOCAL) {
556 kfree(priv->stations[sta_id].lq);
557 priv->stations[sta_id].lq = NULL;
560 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
561 memset(&priv->tid_data[sta_id][tid], 0,
562 sizeof(priv->tid_data[sta_id][tid]));
564 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
566 priv->num_stations--;
568 if (WARN_ON(priv->num_stations < 0))
569 priv->num_stations = 0;
571 spin_unlock_bh(&priv->sta_lock);
573 return iwl_send_remove_station(priv, addr, sta_id, false);
575 spin_unlock_bh(&priv->sta_lock);
579 void iwl_deactivate_station(struct iwl_priv *priv, const u8 sta_id,
584 if (!iwl_is_ready(priv)) {
586 "Unable to remove station %pM, device not ready.\n",
591 IWL_DEBUG_ASSOC(priv, "Deactivating STA: %pM (%d)\n", addr, sta_id);
593 if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION))
596 spin_lock_bh(&priv->sta_lock);
598 WARN_ON_ONCE(!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE));
600 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
601 memset(&priv->tid_data[sta_id][tid], 0,
602 sizeof(priv->tid_data[sta_id][tid]));
604 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
606 priv->num_stations--;
608 if (WARN_ON_ONCE(priv->num_stations < 0))
609 priv->num_stations = 0;
611 spin_unlock_bh(&priv->sta_lock);
614 static void iwl_sta_fill_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
615 u8 sta_id, struct iwl_link_quality_cmd *link_cmd)
621 lockdep_assert_held(&priv->mutex);
623 memset(link_cmd, 0, sizeof(*link_cmd));
625 /* Set up the rate scaling to start at selected rate, fall back
626 * all the way down to 1M in IEEE order, and then spin on 1M */
627 if (priv->band == IEEE80211_BAND_5GHZ)
628 r = IWL_RATE_6M_INDEX;
629 else if (ctx && ctx->vif && ctx->vif->p2p)
630 r = IWL_RATE_6M_INDEX;
632 r = IWL_RATE_1M_INDEX;
634 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
635 rate_flags |= RATE_MCS_CCK_MSK;
637 rate_flags |= first_antenna(priv->eeprom_data->valid_tx_ant) <<
639 rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
640 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
641 link_cmd->rs_table[i].rate_n_flags = rate_n_flags;
643 link_cmd->general_params.single_stream_ant_msk =
644 first_antenna(priv->eeprom_data->valid_tx_ant);
646 link_cmd->general_params.dual_stream_ant_msk =
647 priv->eeprom_data->valid_tx_ant &
648 ~first_antenna(priv->eeprom_data->valid_tx_ant);
649 if (!link_cmd->general_params.dual_stream_ant_msk) {
650 link_cmd->general_params.dual_stream_ant_msk = ANT_AB;
651 } else if (num_of_ant(priv->eeprom_data->valid_tx_ant) == 2) {
652 link_cmd->general_params.dual_stream_ant_msk =
653 priv->eeprom_data->valid_tx_ant;
656 link_cmd->agg_params.agg_dis_start_th =
657 LINK_QUAL_AGG_DISABLE_START_DEF;
658 link_cmd->agg_params.agg_time_limit =
659 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
661 link_cmd->sta_id = sta_id;
665 * iwl_clear_ucode_stations - clear ucode station table bits
667 * This function clears all the bits in the driver indicating
668 * which stations are active in the ucode. Call when something
669 * other than explicit station management would cause this in
670 * the ucode, e.g. unassociated RXON.
672 void iwl_clear_ucode_stations(struct iwl_priv *priv,
673 struct iwl_rxon_context *ctx)
676 bool cleared = false;
678 IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n");
680 spin_lock_bh(&priv->sta_lock);
681 for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
682 if (ctx && ctx->ctxid != priv->stations[i].ctxid)
685 if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) {
687 "Clearing ucode active for station %d\n", i);
688 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
692 spin_unlock_bh(&priv->sta_lock);
696 "No active stations found to be cleared\n");
700 * iwl_restore_stations() - Restore driver known stations to device
702 * All stations considered active by driver, but not present in ucode, is
707 void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
709 struct iwl_addsta_cmd sta_cmd;
710 struct iwl_link_quality_cmd lq;
716 if (!iwl_is_ready(priv)) {
718 "Not ready yet, not restoring any stations.\n");
722 IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n");
723 spin_lock_bh(&priv->sta_lock);
724 for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
725 if (ctx->ctxid != priv->stations[i].ctxid)
727 if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) &&
728 !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) {
729 IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n",
730 priv->stations[i].sta.sta.addr);
731 priv->stations[i].sta.mode = 0;
732 priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS;
737 for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
738 if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) {
739 memcpy(&sta_cmd, &priv->stations[i].sta,
740 sizeof(struct iwl_addsta_cmd));
742 if (priv->stations[i].lq) {
744 iwl_sta_fill_lq(priv, ctx, i, &lq);
746 memcpy(&lq, priv->stations[i].lq,
747 sizeof(struct iwl_link_quality_cmd));
750 spin_unlock_bh(&priv->sta_lock);
751 ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
753 spin_lock_bh(&priv->sta_lock);
754 IWL_ERR(priv, "Adding station %pM failed.\n",
755 priv->stations[i].sta.sta.addr);
756 priv->stations[i].used &=
757 ~IWL_STA_DRIVER_ACTIVE;
758 priv->stations[i].used &=
759 ~IWL_STA_UCODE_INPROGRESS;
763 * Rate scaling has already been initialized, send
767 iwl_send_lq_cmd(priv, ctx, &lq,
769 spin_lock_bh(&priv->sta_lock);
770 priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
774 spin_unlock_bh(&priv->sta_lock);
776 IWL_DEBUG_INFO(priv, "Restoring all known stations .... "
777 "no stations to be restored.\n");
779 IWL_DEBUG_INFO(priv, "Restoring all known stations .... "
783 int iwl_get_free_ucode_key_offset(struct iwl_priv *priv)
787 for (i = 0; i < priv->sta_key_max_num; i++)
788 if (!test_and_set_bit(i, &priv->ucode_key_table))
791 return WEP_INVALID_OFFSET;
794 void iwl_dealloc_bcast_stations(struct iwl_priv *priv)
798 spin_lock_bh(&priv->sta_lock);
799 for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
800 if (!(priv->stations[i].used & IWL_STA_BCAST))
803 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
804 priv->num_stations--;
805 if (WARN_ON(priv->num_stations < 0))
806 priv->num_stations = 0;
807 kfree(priv->stations[i].lq);
808 priv->stations[i].lq = NULL;
810 spin_unlock_bh(&priv->sta_lock);
813 #ifdef CONFIG_IWLWIFI_DEBUG
814 static void iwl_dump_lq_cmd(struct iwl_priv *priv,
815 struct iwl_link_quality_cmd *lq)
818 IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id);
819 IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n",
820 lq->general_params.single_stream_ant_msk,
821 lq->general_params.dual_stream_ant_msk);
823 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
824 IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n",
825 i, lq->rs_table[i].rate_n_flags);
828 static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
829 struct iwl_link_quality_cmd *lq)
835 * is_lq_table_valid() - Test one aspect of LQ cmd for validity
837 * It sometimes happens when a HT rate has been in use and we
838 * loose connectivity with AP then mac80211 will first tell us that the
839 * current channel is not HT anymore before removing the station. In such a
840 * scenario the RXON flags will be updated to indicate we are not
841 * communicating HT anymore, but the LQ command may still contain HT rates.
842 * Test for this to prevent driver from sending LQ command between the time
843 * RXON flags are updated and when LQ command is updated.
845 static bool is_lq_table_valid(struct iwl_priv *priv,
846 struct iwl_rxon_context *ctx,
847 struct iwl_link_quality_cmd *lq)
854 IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n",
855 ctx->active.channel);
856 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
857 if (le32_to_cpu(lq->rs_table[i].rate_n_flags) &
860 "index %d of LQ expects HT channel\n",
869 * iwl_send_lq_cmd() - Send link quality command
870 * @init: This command is sent as part of station initialization right
871 * after station has been added.
873 * The link quality command is sent as the last step of station creation.
874 * This is the special case in which init is set and we call a callback in
875 * this case to clear the state indicating that station creation is in
878 int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
879 struct iwl_link_quality_cmd *lq, u8 flags, bool init)
882 struct iwl_host_cmd cmd = {
883 .id = REPLY_TX_LINK_QUALITY_CMD,
884 .len = { sizeof(struct iwl_link_quality_cmd), },
889 if (WARN_ON(lq->sta_id == IWL_INVALID_STATION))
893 spin_lock_bh(&priv->sta_lock);
894 if (!(priv->stations[lq->sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
895 spin_unlock_bh(&priv->sta_lock);
898 spin_unlock_bh(&priv->sta_lock);
900 iwl_dump_lq_cmd(priv, lq);
901 if (WARN_ON(init && (cmd.flags & CMD_ASYNC)))
904 if (is_lq_table_valid(priv, ctx, lq))
905 ret = iwl_dvm_send_cmd(priv, &cmd);
909 if (cmd.flags & CMD_ASYNC)
913 IWL_DEBUG_INFO(priv, "init LQ command complete, "
914 "clearing sta addition status for sta %d\n",
916 spin_lock_bh(&priv->sta_lock);
917 priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
918 spin_unlock_bh(&priv->sta_lock);
924 static struct iwl_link_quality_cmd *
925 iwl_sta_alloc_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
928 struct iwl_link_quality_cmd *link_cmd;
930 link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL);
932 IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n");
936 iwl_sta_fill_lq(priv, ctx, sta_id, link_cmd);
942 * iwlagn_add_bssid_station - Add the special IBSS BSSID station
946 int iwlagn_add_bssid_station(struct iwl_priv *priv,
947 struct iwl_rxon_context *ctx,
948 const u8 *addr, u8 *sta_id_r)
952 struct iwl_link_quality_cmd *link_cmd;
955 *sta_id_r = IWL_INVALID_STATION;
957 ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id);
959 IWL_ERR(priv, "Unable to add station %pM\n", addr);
966 spin_lock_bh(&priv->sta_lock);
967 priv->stations[sta_id].used |= IWL_STA_LOCAL;
968 spin_unlock_bh(&priv->sta_lock);
970 /* Set up default rate scaling table in device's station table */
971 link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id);
974 "Unable to initialize rate scaling for station %pM.\n",
979 ret = iwl_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true);
981 IWL_ERR(priv, "Link quality command failed (%d)\n", ret);
983 spin_lock_bh(&priv->sta_lock);
984 priv->stations[sta_id].lq = link_cmd;
985 spin_unlock_bh(&priv->sta_lock);
993 * For each context, the device has a table of 4 static WEP keys
994 * (one for each key index) that is updated with the following
998 static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv,
999 struct iwl_rxon_context *ctx,
1002 int i, not_empty = 0;
1003 u8 buff[sizeof(struct iwl_wep_cmd) +
1004 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
1005 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
1006 size_t cmd_size = sizeof(struct iwl_wep_cmd);
1007 struct iwl_host_cmd cmd = {
1008 .id = ctx->wep_key_cmd,
1009 .data = { wep_cmd, },
1015 memset(wep_cmd, 0, cmd_size +
1016 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
1018 for (i = 0; i < WEP_KEYS_MAX ; i++) {
1019 wep_cmd->key[i].key_index = i;
1020 if (ctx->wep_keys[i].key_size) {
1021 wep_cmd->key[i].key_offset = i;
1024 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
1027 wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size;
1028 memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key,
1029 ctx->wep_keys[i].key_size);
1032 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
1033 wep_cmd->num_keys = WEP_KEYS_MAX;
1035 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
1037 cmd.len[0] = cmd_size;
1039 if (not_empty || send_if_empty)
1040 return iwl_dvm_send_cmd(priv, &cmd);
1045 int iwl_restore_default_wep_keys(struct iwl_priv *priv,
1046 struct iwl_rxon_context *ctx)
1048 lockdep_assert_held(&priv->mutex);
1050 return iwl_send_static_wepkey_cmd(priv, ctx, false);
1053 int iwl_remove_default_wep_key(struct iwl_priv *priv,
1054 struct iwl_rxon_context *ctx,
1055 struct ieee80211_key_conf *keyconf)
1059 lockdep_assert_held(&priv->mutex);
1061 IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
1064 memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0]));
1065 if (iwl_is_rfkill(priv)) {
1067 "Not sending REPLY_WEPKEY command due to RFKILL.\n");
1068 /* but keys in device are clear anyway so return success */
1071 ret = iwl_send_static_wepkey_cmd(priv, ctx, 1);
1072 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
1073 keyconf->keyidx, ret);
1078 int iwl_set_default_wep_key(struct iwl_priv *priv,
1079 struct iwl_rxon_context *ctx,
1080 struct ieee80211_key_conf *keyconf)
1084 lockdep_assert_held(&priv->mutex);
1086 if (keyconf->keylen != WEP_KEY_LEN_128 &&
1087 keyconf->keylen != WEP_KEY_LEN_64) {
1089 "Bad WEP key length %d\n", keyconf->keylen);
1093 keyconf->hw_key_idx = IWLAGN_HW_KEY_DEFAULT;
1095 ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
1096 memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key,
1099 ret = iwl_send_static_wepkey_cmd(priv, ctx, false);
1100 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
1101 keyconf->keylen, keyconf->keyidx, ret);
1107 * dynamic (per-station) keys
1109 * The dynamic keys are a little more complicated. The device has
1110 * a key cache of up to STA_KEY_MAX_NUM/STA_KEY_MAX_NUM_PAN keys.
1111 * These are linked to stations by a table that contains an index
1112 * into the key table for each station/key index/{mcast,unicast},
1113 * i.e. it's basically an array of pointers like this:
1114 * key_offset_t key_mapping[NUM_STATIONS][4][2];
1115 * (it really works differently, but you can think of it as such)
1117 * The key uploading and linking happens in the same command, the
1118 * add station command with STA_MODIFY_KEY_MASK.
1121 static u8 iwlagn_key_sta_id(struct iwl_priv *priv,
1122 struct ieee80211_vif *vif,
1123 struct ieee80211_sta *sta)
1125 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1128 return iwl_sta_id(sta);
1131 * The device expects GTKs for station interfaces to be
1132 * installed as GTKs for the AP station. If we have no
1133 * station ID, then use the ap_sta_id in that case.
1135 if (vif->type == NL80211_IFTYPE_STATION && vif_priv->ctx)
1136 return vif_priv->ctx->ap_sta_id;
1138 return IWL_INVALID_STATION;
1141 static int iwlagn_send_sta_key(struct iwl_priv *priv,
1142 struct ieee80211_key_conf *keyconf,
1143 u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k,
1147 struct iwl_addsta_cmd sta_cmd;
1150 spin_lock_bh(&priv->sta_lock);
1151 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd));
1152 spin_unlock_bh(&priv->sta_lock);
1154 key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1155 key_flags |= STA_KEY_FLG_MAP_KEY_MSK;
1157 switch (keyconf->cipher) {
1158 case WLAN_CIPHER_SUITE_CCMP:
1159 key_flags |= STA_KEY_FLG_CCMP;
1160 memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen);
1162 case WLAN_CIPHER_SUITE_TKIP:
1163 key_flags |= STA_KEY_FLG_TKIP;
1164 sta_cmd.key.tkip_rx_tsc_byte2 = tkip_iv32;
1165 for (i = 0; i < 5; i++)
1166 sta_cmd.key.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
1167 memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen);
1169 case WLAN_CIPHER_SUITE_WEP104:
1170 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
1172 case WLAN_CIPHER_SUITE_WEP40:
1173 key_flags |= STA_KEY_FLG_WEP;
1174 memcpy(&sta_cmd.key.key[3], keyconf->key, keyconf->keylen);
1181 if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
1182 key_flags |= STA_KEY_MULTICAST_MSK;
1184 /* key pointer (offset) */
1185 sta_cmd.key.key_offset = keyconf->hw_key_idx;
1187 sta_cmd.key.key_flags = key_flags;
1188 sta_cmd.mode = STA_CONTROL_MODIFY_MSK;
1189 sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK;
1191 return iwl_send_add_sta(priv, &sta_cmd, cmd_flags);
1194 void iwl_update_tkip_key(struct iwl_priv *priv,
1195 struct ieee80211_vif *vif,
1196 struct ieee80211_key_conf *keyconf,
1197 struct ieee80211_sta *sta, u32 iv32, u16 *phase1key)
1199 u8 sta_id = iwlagn_key_sta_id(priv, vif, sta);
1201 if (sta_id == IWL_INVALID_STATION)
1204 if (iwl_scan_cancel(priv)) {
1205 /* cancel scan failed, just live w/ bad key and rely
1206 briefly on SW decryption */
1210 iwlagn_send_sta_key(priv, keyconf, sta_id,
1211 iv32, phase1key, CMD_ASYNC);
1214 int iwl_remove_dynamic_key(struct iwl_priv *priv,
1215 struct iwl_rxon_context *ctx,
1216 struct ieee80211_key_conf *keyconf,
1217 struct ieee80211_sta *sta)
1219 struct iwl_addsta_cmd sta_cmd;
1220 u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta);
1223 /* if station isn't there, neither is the key */
1224 if (sta_id == IWL_INVALID_STATION)
1227 spin_lock_bh(&priv->sta_lock);
1228 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd));
1229 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE))
1230 sta_id = IWL_INVALID_STATION;
1231 spin_unlock_bh(&priv->sta_lock);
1233 if (sta_id == IWL_INVALID_STATION)
1236 lockdep_assert_held(&priv->mutex);
1238 ctx->key_mapping_keys--;
1240 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
1241 keyconf->keyidx, sta_id);
1243 if (!test_and_clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table))
1244 IWL_ERR(priv, "offset %d not used in uCode key table.\n",
1245 keyconf->hw_key_idx);
1247 key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1248 key_flags |= STA_KEY_FLG_MAP_KEY_MSK | STA_KEY_FLG_NO_ENC |
1249 STA_KEY_FLG_INVALID;
1251 if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
1252 key_flags |= STA_KEY_MULTICAST_MSK;
1254 sta_cmd.key.key_flags = key_flags;
1255 sta_cmd.key.key_offset = keyconf->hw_key_idx;
1256 sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK;
1257 sta_cmd.mode = STA_CONTROL_MODIFY_MSK;
1259 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
1262 int iwl_set_dynamic_key(struct iwl_priv *priv,
1263 struct iwl_rxon_context *ctx,
1264 struct ieee80211_key_conf *keyconf,
1265 struct ieee80211_sta *sta)
1267 struct ieee80211_key_seq seq;
1270 u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta);
1273 if (sta_id == IWL_INVALID_STATION)
1276 lockdep_assert_held(&priv->mutex);
1278 keyconf->hw_key_idx = iwl_get_free_ucode_key_offset(priv);
1279 if (keyconf->hw_key_idx == WEP_INVALID_OFFSET)
1282 ctx->key_mapping_keys++;
1284 switch (keyconf->cipher) {
1285 case WLAN_CIPHER_SUITE_TKIP:
1288 else /* station mode case only */
1289 addr = ctx->active.bssid_addr;
1291 /* pre-fill phase 1 key into device cache */
1292 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1293 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
1294 ret = iwlagn_send_sta_key(priv, keyconf, sta_id,
1295 seq.tkip.iv32, p1k, CMD_SYNC);
1297 case WLAN_CIPHER_SUITE_CCMP:
1298 case WLAN_CIPHER_SUITE_WEP40:
1299 case WLAN_CIPHER_SUITE_WEP104:
1300 ret = iwlagn_send_sta_key(priv, keyconf, sta_id,
1304 IWL_ERR(priv, "Unknown cipher %x\n", keyconf->cipher);
1309 ctx->key_mapping_keys--;
1310 clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table);
1313 IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
1314 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
1315 sta ? sta->addr : NULL, ret);
1321 * iwlagn_alloc_bcast_station - add broadcast station into driver's station table.
1323 * This adds the broadcast station into the driver's station table
1324 * and marks it driver active, so that it will be restored to the
1325 * device at the next best time.
1327 int iwlagn_alloc_bcast_station(struct iwl_priv *priv,
1328 struct iwl_rxon_context *ctx)
1330 struct iwl_link_quality_cmd *link_cmd;
1333 spin_lock_bh(&priv->sta_lock);
1334 sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL);
1335 if (sta_id == IWL_INVALID_STATION) {
1336 IWL_ERR(priv, "Unable to prepare broadcast station\n");
1337 spin_unlock_bh(&priv->sta_lock);
1342 priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
1343 priv->stations[sta_id].used |= IWL_STA_BCAST;
1344 spin_unlock_bh(&priv->sta_lock);
1346 link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id);
1349 "Unable to initialize rate scaling for bcast station.\n");
1353 spin_lock_bh(&priv->sta_lock);
1354 priv->stations[sta_id].lq = link_cmd;
1355 spin_unlock_bh(&priv->sta_lock);
1361 * iwl_update_bcast_station - update broadcast station's LQ command
1363 * Only used by iwlagn. Placed here to have all bcast station management
1366 int iwl_update_bcast_station(struct iwl_priv *priv,
1367 struct iwl_rxon_context *ctx)
1369 struct iwl_link_quality_cmd *link_cmd;
1370 u8 sta_id = ctx->bcast_sta_id;
1372 link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id);
1374 IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n");
1378 spin_lock_bh(&priv->sta_lock);
1379 if (priv->stations[sta_id].lq)
1380 kfree(priv->stations[sta_id].lq);
1382 IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n");
1383 priv->stations[sta_id].lq = link_cmd;
1384 spin_unlock_bh(&priv->sta_lock);
1389 int iwl_update_bcast_stations(struct iwl_priv *priv)
1391 struct iwl_rxon_context *ctx;
1394 for_each_context(priv, ctx) {
1395 ret = iwl_update_bcast_station(priv, ctx);
1404 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
1406 int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
1408 struct iwl_addsta_cmd sta_cmd;
1410 lockdep_assert_held(&priv->mutex);
1412 /* Remove "disable" flag, to enable Tx for this TID */
1413 spin_lock_bh(&priv->sta_lock);
1414 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1415 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1416 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1417 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
1418 spin_unlock_bh(&priv->sta_lock);
1420 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
1423 int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
1427 struct iwl_addsta_cmd sta_cmd;
1429 lockdep_assert_held(&priv->mutex);
1431 sta_id = iwl_sta_id(sta);
1432 if (sta_id == IWL_INVALID_STATION)
1435 spin_lock_bh(&priv->sta_lock);
1436 priv->stations[sta_id].sta.station_flags_msk = 0;
1437 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1438 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1439 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1440 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1441 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
1442 spin_unlock_bh(&priv->sta_lock);
1444 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
1447 int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
1451 struct iwl_addsta_cmd sta_cmd;
1453 lockdep_assert_held(&priv->mutex);
1455 sta_id = iwl_sta_id(sta);
1456 if (sta_id == IWL_INVALID_STATION) {
1457 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
1461 spin_lock_bh(&priv->sta_lock);
1462 priv->stations[sta_id].sta.station_flags_msk = 0;
1463 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1464 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1465 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1466 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
1467 spin_unlock_bh(&priv->sta_lock);
1469 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
1474 void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
1476 struct iwl_addsta_cmd cmd = {
1477 .mode = STA_CONTROL_MODIFY_MSK,
1478 .station_flags = STA_FLG_PWR_SAVE_MSK,
1479 .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
1480 .sta.sta_id = sta_id,
1481 .sta.modify_mask = STA_MODIFY_SLEEP_TX_COUNT_MSK,
1482 .sleep_tx_count = cpu_to_le16(cnt),
1485 iwl_send_add_sta(priv, &cmd, CMD_ASYNC);