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 *****************************************************************************/
30 #include <net/mac80211.h>
35 #include "iwl-trans.h"
37 /* priv->shrd->sta_lock must be held */
38 static int iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
40 if (sta_id >= IWLAGN_STATION_COUNT) {
41 IWL_ERR(priv, "invalid sta_id %u", sta_id);
44 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
45 IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u "
47 sta_id, priv->stations[sta_id].sta.sta.addr);
49 if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) {
51 "STA id %u addr %pM already present in uCode "
52 "(according to driver)\n",
53 sta_id, priv->stations[sta_id].sta.sta.addr);
55 priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
56 IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n",
57 sta_id, priv->stations[sta_id].sta.sta.addr);
62 static int iwl_process_add_sta_resp(struct iwl_priv *priv,
63 struct iwl_addsta_cmd *addsta,
64 struct iwl_rx_packet *pkt)
66 u8 sta_id = addsta->sta.sta_id;
70 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
71 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
76 IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n",
79 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
81 switch (pkt->u.add_sta.status) {
82 case ADD_STA_SUCCESS_MSK:
83 IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
84 ret = iwl_sta_ucode_activate(priv, sta_id);
86 case ADD_STA_NO_ROOM_IN_TABLE:
87 IWL_ERR(priv, "Adding station %d failed, no room in table.\n",
90 case ADD_STA_NO_BLOCK_ACK_RESOURCE:
91 IWL_ERR(priv, "Adding station %d failed, no block ack "
92 "resource.\n", sta_id);
94 case ADD_STA_MODIFY_NON_EXIST_STA:
95 IWL_ERR(priv, "Attempting to modify non-existing station %d\n",
99 IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
100 pkt->u.add_sta.status);
104 IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n",
105 priv->stations[sta_id].sta.mode ==
106 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
107 sta_id, priv->stations[sta_id].sta.sta.addr);
110 * XXX: The MAC address in the command buffer is often changed from
111 * the original sent to the device. That is, the MAC address
112 * written to the command buffer often is not the same MAC address
113 * read from the command buffer when the command returns. This
114 * issue has not yet been resolved and this debugging is left to
115 * observe the problem.
117 IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n",
118 priv->stations[sta_id].sta.mode ==
119 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
121 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
126 int iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
127 struct iwl_device_cmd *cmd)
129 struct iwl_rx_packet *pkt = rxb_addr(rxb);
130 struct iwl_addsta_cmd *addsta =
131 (struct iwl_addsta_cmd *) cmd->payload;
133 return iwl_process_add_sta_resp(priv, addsta, pkt);
136 int iwl_send_add_sta(struct iwl_priv *priv,
137 struct iwl_addsta_cmd *sta, u8 flags)
140 struct iwl_host_cmd cmd = {
144 .len = { sizeof(*sta), },
146 u8 sta_id __maybe_unused = sta->sta.sta_id;
148 IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n",
149 sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : "");
151 if (!(flags & CMD_ASYNC)) {
152 cmd.flags |= CMD_WANT_SKB;
156 ret = iwl_trans_send_cmd(trans(priv), &cmd);
158 if (ret || (flags & CMD_ASYNC))
160 /*else the command was successfully sent in SYNC mode, need to free
163 iwl_free_pages(priv->shrd, cmd.reply_page);
165 if (cmd.handler_status)
166 IWL_ERR(priv, "%s - error in the CMD response %d", __func__,
169 return cmd.handler_status;
172 static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
173 struct ieee80211_sta *sta,
174 struct iwl_rxon_context *ctx)
176 struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap;
180 if (!sta || !sta_ht_inf->ht_supported)
183 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
184 IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
185 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
187 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
188 "dynamic" : "disabled");
190 sta_flags = priv->stations[index].sta.station_flags;
192 sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
194 switch (mimo_ps_mode) {
195 case WLAN_HT_CAP_SM_PS_STATIC:
196 sta_flags |= STA_FLG_MIMO_DIS_MSK;
198 case WLAN_HT_CAP_SM_PS_DYNAMIC:
199 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
201 case WLAN_HT_CAP_SM_PS_DISABLED:
204 IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
208 sta_flags |= cpu_to_le32(
209 (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
211 sta_flags |= cpu_to_le32(
212 (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
214 if (iwl_is_ht40_tx_allowed(priv, ctx, &sta->ht_cap))
215 sta_flags |= STA_FLG_HT40_EN_MSK;
217 sta_flags &= ~STA_FLG_HT40_EN_MSK;
219 priv->stations[index].sta.station_flags = sta_flags;
225 * iwl_prep_station - Prepare station information for addition
227 * should be called with sta_lock held
229 u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
230 const u8 *addr, bool is_ap, struct ieee80211_sta *sta)
232 struct iwl_station_entry *station;
234 u8 sta_id = IWL_INVALID_STATION;
237 sta_id = ctx->ap_sta_id;
238 else if (is_broadcast_ether_addr(addr))
239 sta_id = ctx->bcast_sta_id;
241 for (i = IWL_STA_ID; i < IWLAGN_STATION_COUNT; i++) {
242 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
248 if (!priv->stations[i].used &&
249 sta_id == IWL_INVALID_STATION)
254 * These two conditions have the same outcome, but keep them
257 if (unlikely(sta_id == IWL_INVALID_STATION))
261 * uCode is not able to deal with multiple requests to add a
262 * station. Keep track if one is in progress so that we do not send
265 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
266 IWL_DEBUG_INFO(priv, "STA %d already in process of being "
271 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
272 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) &&
273 !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
274 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not "
275 "adding again.\n", sta_id, addr);
279 station = &priv->stations[sta_id];
280 station->used = IWL_STA_DRIVER_ACTIVE;
281 IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
283 priv->num_stations++;
285 /* Set up the REPLY_ADD_STA command to send to device */
286 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
287 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
288 station->sta.mode = 0;
289 station->sta.sta.sta_id = sta_id;
290 station->sta.station_flags = ctx->station_flags;
291 station->ctxid = ctx->ctxid;
294 struct iwl_station_priv *sta_priv;
296 sta_priv = (void *)sta->drv_priv;
301 * OK to call unconditionally, since local stations (IBSS BSSID
302 * STA and broadcast STA) pass in a NULL sta, and mac80211
303 * doesn't allow HT IBSS.
305 iwl_set_ht_add_station(priv, sta_id, sta, ctx);
311 #define STA_WAIT_TIMEOUT (HZ/2)
314 * iwl_add_station_common -
316 int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
317 const u8 *addr, bool is_ap,
318 struct ieee80211_sta *sta, u8 *sta_id_r)
320 unsigned long flags_spin;
323 struct iwl_addsta_cmd sta_cmd;
326 spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
327 sta_id = iwl_prep_station(priv, ctx, addr, is_ap, sta);
328 if (sta_id == IWL_INVALID_STATION) {
329 IWL_ERR(priv, "Unable to prepare station %pM for addition\n",
331 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
336 * uCode is not able to deal with multiple requests to add a
337 * station. Keep track if one is in progress so that we do not send
340 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
341 IWL_DEBUG_INFO(priv, "STA %d already in process of being "
343 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
347 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
348 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
349 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not "
350 "adding again.\n", sta_id, addr);
351 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
355 priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS;
356 memcpy(&sta_cmd, &priv->stations[sta_id].sta,
357 sizeof(struct iwl_addsta_cmd));
358 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
360 /* Add station to device's station table */
361 ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
363 spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
364 IWL_ERR(priv, "Adding station %pM failed.\n",
365 priv->stations[sta_id].sta.sta.addr);
366 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
367 priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
368 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
375 * iwl_sta_ucode_deactivate - deactivate ucode status for a station
377 * priv->shrd->sta_lock must be held
379 static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id)
381 /* Ucode must be active and driver must be non active */
382 if ((priv->stations[sta_id].used &
383 (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) !=
384 IWL_STA_UCODE_ACTIVE)
385 IWL_ERR(priv, "removed non active STA %u\n", sta_id);
387 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
389 memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
390 IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id);
393 static int iwl_send_remove_station(struct iwl_priv *priv,
394 const u8 *addr, int sta_id,
397 struct iwl_rx_packet *pkt;
400 unsigned long flags_spin;
401 struct iwl_rem_sta_cmd rm_sta_cmd;
403 struct iwl_host_cmd cmd = {
404 .id = REPLY_REMOVE_STA,
405 .len = { sizeof(struct iwl_rem_sta_cmd), },
407 .data = { &rm_sta_cmd, },
410 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
411 rm_sta_cmd.num_sta = 1;
412 memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN);
414 cmd.flags |= CMD_WANT_SKB;
416 ret = iwl_trans_send_cmd(trans(priv), &cmd);
421 pkt = (struct iwl_rx_packet *)cmd.reply_page;
422 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
423 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
429 switch (pkt->u.rem_sta.status) {
430 case REM_STA_SUCCESS_MSK:
432 spin_lock_irqsave(&priv->shrd->sta_lock,
434 iwl_sta_ucode_deactivate(priv, sta_id);
435 spin_unlock_irqrestore(&priv->shrd->sta_lock,
438 IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
442 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
446 iwl_free_pages(priv->shrd, cmd.reply_page);
452 * iwl_remove_station - Remove driver's knowledge of station.
454 int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
460 if (!iwl_is_ready(priv->shrd)) {
462 "Unable to remove station %pM, device not ready.\n",
465 * It is typical for stations to be removed when we are
466 * going down. Return success since device will be down
472 IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
475 if (WARN_ON(sta_id == IWL_INVALID_STATION))
478 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
480 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
481 IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n",
486 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
487 IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n",
492 if (priv->stations[sta_id].used & IWL_STA_LOCAL) {
493 kfree(priv->stations[sta_id].lq);
494 priv->stations[sta_id].lq = NULL;
497 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
498 memset(&priv->tid_data[sta_id][tid], 0,
499 sizeof(priv->tid_data[sta_id][tid]));
501 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
503 priv->num_stations--;
505 if (WARN_ON(priv->num_stations < 0))
506 priv->num_stations = 0;
508 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
510 return iwl_send_remove_station(priv, addr, sta_id, false);
512 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
517 * iwl_clear_ucode_stations - clear ucode station table bits
519 * This function clears all the bits in the driver indicating
520 * which stations are active in the ucode. Call when something
521 * other than explicit station management would cause this in
522 * the ucode, e.g. unassociated RXON.
524 void iwl_clear_ucode_stations(struct iwl_priv *priv,
525 struct iwl_rxon_context *ctx)
528 unsigned long flags_spin;
529 bool cleared = false;
531 IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n");
533 spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
534 for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
535 if (ctx && ctx->ctxid != priv->stations[i].ctxid)
538 if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) {
540 "Clearing ucode active for station %d\n", i);
541 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
545 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
549 "No active stations found to be cleared\n");
553 * iwl_restore_stations() - Restore driver known stations to device
555 * All stations considered active by driver, but not present in ucode, is
560 void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
562 struct iwl_addsta_cmd sta_cmd;
563 struct iwl_link_quality_cmd lq;
564 unsigned long flags_spin;
570 if (!iwl_is_ready(priv->shrd)) {
572 "Not ready yet, not restoring any stations.\n");
576 IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n");
577 spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
578 for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
579 if (ctx->ctxid != priv->stations[i].ctxid)
581 if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) &&
582 !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) {
583 IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n",
584 priv->stations[i].sta.sta.addr);
585 priv->stations[i].sta.mode = 0;
586 priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS;
591 for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
592 if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) {
593 memcpy(&sta_cmd, &priv->stations[i].sta,
594 sizeof(struct iwl_addsta_cmd));
596 if (priv->stations[i].lq) {
597 if (priv->shrd->wowlan)
598 iwl_sta_fill_lq(priv, ctx, i, &lq);
600 memcpy(&lq, priv->stations[i].lq,
601 sizeof(struct iwl_link_quality_cmd));
604 spin_unlock_irqrestore(&priv->shrd->sta_lock,
606 ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
608 spin_lock_irqsave(&priv->shrd->sta_lock,
610 IWL_ERR(priv, "Adding station %pM failed.\n",
611 priv->stations[i].sta.sta.addr);
612 priv->stations[i].used &=
613 ~IWL_STA_DRIVER_ACTIVE;
614 priv->stations[i].used &=
615 ~IWL_STA_UCODE_INPROGRESS;
616 spin_unlock_irqrestore(&priv->shrd->sta_lock,
620 * Rate scaling has already been initialized, send
624 iwl_send_lq_cmd(priv, ctx, &lq,
626 spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
627 priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
631 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
633 IWL_DEBUG_INFO(priv, "Restoring all known stations .... "
634 "no stations to be restored.\n");
636 IWL_DEBUG_INFO(priv, "Restoring all known stations .... "
640 void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
643 int sta_id = ctx->ap_sta_id;
645 struct iwl_addsta_cmd sta_cmd;
646 struct iwl_link_quality_cmd lq;
647 bool active, have_lq = false;
649 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
650 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
651 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
655 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd));
657 if (priv->stations[sta_id].lq) {
658 memcpy(&lq, priv->stations[sta_id].lq, sizeof(lq));
662 active = priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE;
663 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
664 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
667 ret = iwl_send_remove_station(
668 priv, priv->stations[sta_id].sta.sta.addr,
671 IWL_ERR(priv, "failed to remove STA %pM (%d)\n",
672 priv->stations[sta_id].sta.sta.addr, ret);
674 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
675 priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
676 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
678 ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
680 IWL_ERR(priv, "failed to re-add STA %pM (%d)\n",
681 priv->stations[sta_id].sta.sta.addr, ret);
683 iwl_send_lq_cmd(priv, ctx, &lq, CMD_SYNC, true);
686 int iwl_get_free_ucode_key_offset(struct iwl_priv *priv)
690 for (i = 0; i < priv->sta_key_max_num; i++)
691 if (!test_and_set_bit(i, &priv->ucode_key_table))
694 return WEP_INVALID_OFFSET;
697 void iwl_dealloc_bcast_stations(struct iwl_priv *priv)
702 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
703 for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
704 if (!(priv->stations[i].used & IWL_STA_BCAST))
707 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
708 priv->num_stations--;
709 if (WARN_ON(priv->num_stations < 0))
710 priv->num_stations = 0;
711 kfree(priv->stations[i].lq);
712 priv->stations[i].lq = NULL;
714 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
717 #ifdef CONFIG_IWLWIFI_DEBUG
718 static void iwl_dump_lq_cmd(struct iwl_priv *priv,
719 struct iwl_link_quality_cmd *lq)
722 IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id);
723 IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n",
724 lq->general_params.single_stream_ant_msk,
725 lq->general_params.dual_stream_ant_msk);
727 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
728 IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n",
729 i, lq->rs_table[i].rate_n_flags);
732 static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
733 struct iwl_link_quality_cmd *lq)
739 * is_lq_table_valid() - Test one aspect of LQ cmd for validity
741 * It sometimes happens when a HT rate has been in use and we
742 * loose connectivity with AP then mac80211 will first tell us that the
743 * current channel is not HT anymore before removing the station. In such a
744 * scenario the RXON flags will be updated to indicate we are not
745 * communicating HT anymore, but the LQ command may still contain HT rates.
746 * Test for this to prevent driver from sending LQ command between the time
747 * RXON flags are updated and when LQ command is updated.
749 static bool is_lq_table_valid(struct iwl_priv *priv,
750 struct iwl_rxon_context *ctx,
751 struct iwl_link_quality_cmd *lq)
758 IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n",
759 ctx->active.channel);
760 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
761 if (le32_to_cpu(lq->rs_table[i].rate_n_flags) &
764 "index %d of LQ expects HT channel\n",
773 * iwl_send_lq_cmd() - Send link quality command
774 * @init: This command is sent as part of station initialization right
775 * after station has been added.
777 * The link quality command is sent as the last step of station creation.
778 * This is the special case in which init is set and we call a callback in
779 * this case to clear the state indicating that station creation is in
782 int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
783 struct iwl_link_quality_cmd *lq, u8 flags, bool init)
786 unsigned long flags_spin;
788 struct iwl_host_cmd cmd = {
789 .id = REPLY_TX_LINK_QUALITY_CMD,
790 .len = { sizeof(struct iwl_link_quality_cmd), },
795 if (WARN_ON(lq->sta_id == IWL_INVALID_STATION))
799 spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
800 if (!(priv->stations[lq->sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
801 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
804 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
806 iwl_dump_lq_cmd(priv, lq);
807 if (WARN_ON(init && (cmd.flags & CMD_ASYNC)))
810 if (is_lq_table_valid(priv, ctx, lq))
811 ret = iwl_trans_send_cmd(trans(priv), &cmd);
815 if (cmd.flags & CMD_ASYNC)
819 IWL_DEBUG_INFO(priv, "init LQ command complete, "
820 "clearing sta addition status for sta %d\n",
822 spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
823 priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
824 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
830 void iwl_sta_fill_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
831 u8 sta_id, struct iwl_link_quality_cmd *link_cmd)
837 lockdep_assert_held(&priv->shrd->mutex);
839 memset(link_cmd, 0, sizeof(*link_cmd));
841 /* Set up the rate scaling to start at selected rate, fall back
842 * all the way down to 1M in IEEE order, and then spin on 1M */
843 if (priv->band == IEEE80211_BAND_5GHZ)
844 r = IWL_RATE_6M_INDEX;
845 else if (ctx && ctx->vif && ctx->vif->p2p)
846 r = IWL_RATE_6M_INDEX;
848 r = IWL_RATE_1M_INDEX;
850 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
851 rate_flags |= RATE_MCS_CCK_MSK;
853 rate_flags |= first_antenna(hw_params(priv).valid_tx_ant) <<
855 rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
856 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
857 link_cmd->rs_table[i].rate_n_flags = rate_n_flags;
859 link_cmd->general_params.single_stream_ant_msk =
860 first_antenna(hw_params(priv).valid_tx_ant);
862 link_cmd->general_params.dual_stream_ant_msk =
863 hw_params(priv).valid_tx_ant &
864 ~first_antenna(hw_params(priv).valid_tx_ant);
865 if (!link_cmd->general_params.dual_stream_ant_msk) {
866 link_cmd->general_params.dual_stream_ant_msk = ANT_AB;
867 } else if (num_of_ant(hw_params(priv).valid_tx_ant) == 2) {
868 link_cmd->general_params.dual_stream_ant_msk =
869 hw_params(priv).valid_tx_ant;
872 link_cmd->agg_params.agg_dis_start_th =
873 LINK_QUAL_AGG_DISABLE_START_DEF;
874 link_cmd->agg_params.agg_time_limit =
875 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
877 link_cmd->sta_id = sta_id;
880 static struct iwl_link_quality_cmd *
881 iwl_sta_alloc_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
884 struct iwl_link_quality_cmd *link_cmd;
886 link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL);
888 IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n");
892 iwl_sta_fill_lq(priv, ctx, sta_id, link_cmd);
898 * iwlagn_add_bssid_station - Add the special IBSS BSSID station
902 int iwlagn_add_bssid_station(struct iwl_priv *priv,
903 struct iwl_rxon_context *ctx,
904 const u8 *addr, u8 *sta_id_r)
908 struct iwl_link_quality_cmd *link_cmd;
912 *sta_id_r = IWL_INVALID_STATION;
914 ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id);
916 IWL_ERR(priv, "Unable to add station %pM\n", addr);
923 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
924 priv->stations[sta_id].used |= IWL_STA_LOCAL;
925 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
927 /* Set up default rate scaling table in device's station table */
928 link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id);
931 "Unable to initialize rate scaling for station %pM.\n",
936 ret = iwl_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true);
938 IWL_ERR(priv, "Link quality command failed (%d)\n", ret);
940 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
941 priv->stations[sta_id].lq = link_cmd;
942 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
950 * For each context, the device has a table of 4 static WEP keys
951 * (one for each key index) that is updated with the following
955 static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv,
956 struct iwl_rxon_context *ctx,
959 int i, not_empty = 0;
960 u8 buff[sizeof(struct iwl_wep_cmd) +
961 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
962 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
963 size_t cmd_size = sizeof(struct iwl_wep_cmd);
964 struct iwl_host_cmd cmd = {
965 .id = ctx->wep_key_cmd,
966 .data = { wep_cmd, },
972 memset(wep_cmd, 0, cmd_size +
973 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
975 for (i = 0; i < WEP_KEYS_MAX ; i++) {
976 wep_cmd->key[i].key_index = i;
977 if (ctx->wep_keys[i].key_size) {
978 wep_cmd->key[i].key_offset = i;
981 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
984 wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size;
985 memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key,
986 ctx->wep_keys[i].key_size);
989 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
990 wep_cmd->num_keys = WEP_KEYS_MAX;
992 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
994 cmd.len[0] = cmd_size;
996 if (not_empty || send_if_empty)
997 return iwl_trans_send_cmd(trans(priv), &cmd);
1002 int iwl_restore_default_wep_keys(struct iwl_priv *priv,
1003 struct iwl_rxon_context *ctx)
1005 lockdep_assert_held(&priv->shrd->mutex);
1007 return iwl_send_static_wepkey_cmd(priv, ctx, false);
1010 int iwl_remove_default_wep_key(struct iwl_priv *priv,
1011 struct iwl_rxon_context *ctx,
1012 struct ieee80211_key_conf *keyconf)
1016 lockdep_assert_held(&priv->shrd->mutex);
1018 IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
1021 memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0]));
1022 if (iwl_is_rfkill(priv->shrd)) {
1024 "Not sending REPLY_WEPKEY command due to RFKILL.\n");
1025 /* but keys in device are clear anyway so return success */
1028 ret = iwl_send_static_wepkey_cmd(priv, ctx, 1);
1029 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
1030 keyconf->keyidx, ret);
1035 int iwl_set_default_wep_key(struct iwl_priv *priv,
1036 struct iwl_rxon_context *ctx,
1037 struct ieee80211_key_conf *keyconf)
1041 lockdep_assert_held(&priv->shrd->mutex);
1043 if (keyconf->keylen != WEP_KEY_LEN_128 &&
1044 keyconf->keylen != WEP_KEY_LEN_64) {
1046 "Bad WEP key length %d\n", keyconf->keylen);
1050 keyconf->hw_key_idx = IWLAGN_HW_KEY_DEFAULT;
1052 ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
1053 memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key,
1056 ret = iwl_send_static_wepkey_cmd(priv, ctx, false);
1057 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
1058 keyconf->keylen, keyconf->keyidx, ret);
1064 * dynamic (per-station) keys
1066 * The dynamic keys are a little more complicated. The device has
1067 * a key cache of up to STA_KEY_MAX_NUM/STA_KEY_MAX_NUM_PAN keys.
1068 * These are linked to stations by a table that contains an index
1069 * into the key table for each station/key index/{mcast,unicast},
1070 * i.e. it's basically an array of pointers like this:
1071 * key_offset_t key_mapping[NUM_STATIONS][4][2];
1072 * (it really works differently, but you can think of it as such)
1074 * The key uploading and linking happens in the same command, the
1075 * add station command with STA_MODIFY_KEY_MASK.
1078 static u8 iwlagn_key_sta_id(struct iwl_priv *priv,
1079 struct ieee80211_vif *vif,
1080 struct ieee80211_sta *sta)
1082 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1083 u8 sta_id = IWL_INVALID_STATION;
1086 sta_id = iwl_sta_id(sta);
1089 * The device expects GTKs for station interfaces to be
1090 * installed as GTKs for the AP station. If we have no
1091 * station ID, then use the ap_sta_id in that case.
1093 if (!sta && vif && vif_priv->ctx) {
1094 switch (vif->type) {
1095 case NL80211_IFTYPE_STATION:
1096 sta_id = vif_priv->ctx->ap_sta_id;
1100 * In all other cases, the key will be
1101 * used either for TX only or is bound
1102 * to a station already.
1111 static int iwlagn_send_sta_key(struct iwl_priv *priv,
1112 struct ieee80211_key_conf *keyconf,
1113 u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k,
1116 unsigned long flags;
1118 struct iwl_addsta_cmd sta_cmd;
1121 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1122 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd));
1123 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1125 key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1126 key_flags |= STA_KEY_FLG_MAP_KEY_MSK;
1128 switch (keyconf->cipher) {
1129 case WLAN_CIPHER_SUITE_CCMP:
1130 key_flags |= STA_KEY_FLG_CCMP;
1131 memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen);
1133 case WLAN_CIPHER_SUITE_TKIP:
1134 key_flags |= STA_KEY_FLG_TKIP;
1135 sta_cmd.key.tkip_rx_tsc_byte2 = tkip_iv32;
1136 for (i = 0; i < 5; i++)
1137 sta_cmd.key.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
1138 memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen);
1140 case WLAN_CIPHER_SUITE_WEP104:
1141 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
1143 case WLAN_CIPHER_SUITE_WEP40:
1144 key_flags |= STA_KEY_FLG_WEP;
1145 memcpy(&sta_cmd.key.key[3], keyconf->key, keyconf->keylen);
1152 if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
1153 key_flags |= STA_KEY_MULTICAST_MSK;
1155 /* key pointer (offset) */
1156 sta_cmd.key.key_offset = keyconf->hw_key_idx;
1158 sta_cmd.key.key_flags = key_flags;
1159 sta_cmd.mode = STA_CONTROL_MODIFY_MSK;
1160 sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK;
1162 return iwl_send_add_sta(priv, &sta_cmd, cmd_flags);
1165 void iwl_update_tkip_key(struct iwl_priv *priv,
1166 struct ieee80211_vif *vif,
1167 struct ieee80211_key_conf *keyconf,
1168 struct ieee80211_sta *sta, u32 iv32, u16 *phase1key)
1170 u8 sta_id = iwlagn_key_sta_id(priv, vif, sta);
1172 if (sta_id == IWL_INVALID_STATION)
1175 if (iwl_scan_cancel(priv)) {
1176 /* cancel scan failed, just live w/ bad key and rely
1177 briefly on SW decryption */
1181 iwlagn_send_sta_key(priv, keyconf, sta_id,
1182 iv32, phase1key, CMD_ASYNC);
1185 int iwl_remove_dynamic_key(struct iwl_priv *priv,
1186 struct iwl_rxon_context *ctx,
1187 struct ieee80211_key_conf *keyconf,
1188 struct ieee80211_sta *sta)
1190 unsigned long flags;
1191 struct iwl_addsta_cmd sta_cmd;
1192 u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta);
1194 /* if station isn't there, neither is the key */
1195 if (sta_id == IWL_INVALID_STATION)
1198 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1199 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd));
1200 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE))
1201 sta_id = IWL_INVALID_STATION;
1202 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1204 if (sta_id == IWL_INVALID_STATION)
1207 lockdep_assert_held(&priv->shrd->mutex);
1209 ctx->key_mapping_keys--;
1211 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
1212 keyconf->keyidx, sta_id);
1214 if (!test_and_clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table))
1215 IWL_ERR(priv, "offset %d not used in uCode key table.\n",
1216 keyconf->hw_key_idx);
1218 sta_cmd.key.key_flags = STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
1219 sta_cmd.key.key_offset = WEP_INVALID_OFFSET;
1220 sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK;
1221 sta_cmd.mode = STA_CONTROL_MODIFY_MSK;
1223 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
1226 int iwl_set_dynamic_key(struct iwl_priv *priv,
1227 struct iwl_rxon_context *ctx,
1228 struct ieee80211_key_conf *keyconf,
1229 struct ieee80211_sta *sta)
1231 struct ieee80211_key_seq seq;
1234 u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta);
1237 if (sta_id == IWL_INVALID_STATION)
1240 lockdep_assert_held(&priv->shrd->mutex);
1242 keyconf->hw_key_idx = iwl_get_free_ucode_key_offset(priv);
1243 if (keyconf->hw_key_idx == WEP_INVALID_OFFSET)
1246 ctx->key_mapping_keys++;
1248 switch (keyconf->cipher) {
1249 case WLAN_CIPHER_SUITE_TKIP:
1252 else /* station mode case only */
1253 addr = ctx->active.bssid_addr;
1255 /* pre-fill phase 1 key into device cache */
1256 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1257 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
1258 ret = iwlagn_send_sta_key(priv, keyconf, sta_id,
1259 seq.tkip.iv32, p1k, CMD_SYNC);
1261 case WLAN_CIPHER_SUITE_CCMP:
1262 case WLAN_CIPHER_SUITE_WEP40:
1263 case WLAN_CIPHER_SUITE_WEP104:
1264 ret = iwlagn_send_sta_key(priv, keyconf, sta_id,
1268 IWL_ERR(priv, "Unknown cipher %x\n", keyconf->cipher);
1273 ctx->key_mapping_keys--;
1274 clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table);
1277 IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
1278 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
1279 sta ? sta->addr : NULL, ret);
1285 * iwlagn_alloc_bcast_station - add broadcast station into driver's station table.
1287 * This adds the broadcast station into the driver's station table
1288 * and marks it driver active, so that it will be restored to the
1289 * device at the next best time.
1291 int iwlagn_alloc_bcast_station(struct iwl_priv *priv,
1292 struct iwl_rxon_context *ctx)
1294 struct iwl_link_quality_cmd *link_cmd;
1295 unsigned long flags;
1298 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1299 sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL);
1300 if (sta_id == IWL_INVALID_STATION) {
1301 IWL_ERR(priv, "Unable to prepare broadcast station\n");
1302 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1307 priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
1308 priv->stations[sta_id].used |= IWL_STA_BCAST;
1309 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1311 link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id);
1314 "Unable to initialize rate scaling for bcast station.\n");
1318 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1319 priv->stations[sta_id].lq = link_cmd;
1320 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1326 * iwl_update_bcast_station - update broadcast station's LQ command
1328 * Only used by iwlagn. Placed here to have all bcast station management
1331 int iwl_update_bcast_station(struct iwl_priv *priv,
1332 struct iwl_rxon_context *ctx)
1334 unsigned long flags;
1335 struct iwl_link_quality_cmd *link_cmd;
1336 u8 sta_id = ctx->bcast_sta_id;
1338 link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id);
1340 IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n");
1344 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1345 if (priv->stations[sta_id].lq)
1346 kfree(priv->stations[sta_id].lq);
1348 IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n");
1349 priv->stations[sta_id].lq = link_cmd;
1350 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1355 int iwl_update_bcast_stations(struct iwl_priv *priv)
1357 struct iwl_rxon_context *ctx;
1360 for_each_context(priv, ctx) {
1361 ret = iwl_update_bcast_station(priv, ctx);
1370 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
1372 int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
1374 unsigned long flags;
1375 struct iwl_addsta_cmd sta_cmd;
1377 lockdep_assert_held(&priv->shrd->mutex);
1379 /* Remove "disable" flag, to enable Tx for this TID */
1380 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1381 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1382 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1383 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1384 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
1385 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1387 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
1390 int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
1393 unsigned long flags;
1395 struct iwl_addsta_cmd sta_cmd;
1397 lockdep_assert_held(&priv->shrd->mutex);
1399 sta_id = iwl_sta_id(sta);
1400 if (sta_id == IWL_INVALID_STATION)
1403 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1404 priv->stations[sta_id].sta.station_flags_msk = 0;
1405 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1406 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1407 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1408 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1409 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
1410 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1412 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
1415 int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
1418 unsigned long flags;
1420 struct iwl_addsta_cmd sta_cmd;
1422 lockdep_assert_held(&priv->shrd->mutex);
1424 sta_id = iwl_sta_id(sta);
1425 if (sta_id == IWL_INVALID_STATION) {
1426 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
1430 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1431 priv->stations[sta_id].sta.station_flags_msk = 0;
1432 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1433 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1434 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1435 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
1436 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1438 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
1443 void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
1445 unsigned long flags;
1447 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1448 priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
1449 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1450 priv->stations[sta_id].sta.sta.modify_mask =
1451 STA_MODIFY_SLEEP_TX_COUNT_MSK;
1452 priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
1453 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1454 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1455 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);