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8ca151b5 JB |
1 | /****************************************************************************** |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
fa7878e7 AO |
8 | * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. |
9 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
854c5705 | 10 | * Copyright(c) 2016 Intel Deutschland GmbH |
8ca151b5 JB |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of version 2 of the GNU General Public License as | |
14 | * published by the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
24 | * USA | |
25 | * | |
26 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 27 | * in the file called COPYING. |
8ca151b5 JB |
28 | * |
29 | * Contact Information: | |
cb2f8277 | 30 | * Intel Linux Wireless <linuxwifi@intel.com> |
8ca151b5 JB |
31 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
32 | * | |
33 | * BSD LICENSE | |
34 | * | |
fa7878e7 AO |
35 | * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. |
36 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
854c5705 | 37 | * Copyright(c) 2016 Intel Deutschland GmbH |
8ca151b5 JB |
38 | * All rights reserved. |
39 | * | |
40 | * Redistribution and use in source and binary forms, with or without | |
41 | * modification, are permitted provided that the following conditions | |
42 | * are met: | |
43 | * | |
44 | * * Redistributions of source code must retain the above copyright | |
45 | * notice, this list of conditions and the following disclaimer. | |
46 | * * Redistributions in binary form must reproduce the above copyright | |
47 | * notice, this list of conditions and the following disclaimer in | |
48 | * the documentation and/or other materials provided with the | |
49 | * distribution. | |
50 | * * Neither the name Intel Corporation nor the names of its | |
51 | * contributors may be used to endorse or promote products derived | |
52 | * from this software without specific prior written permission. | |
53 | * | |
54 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
55 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
56 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
57 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
58 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
59 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
60 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
61 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
62 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
63 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
64 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
65 | * | |
66 | *****************************************************************************/ | |
67 | #include <net/mac80211.h> | |
68 | ||
69 | #include "mvm.h" | |
70 | #include "sta.h" | |
9ee718aa | 71 | #include "rs.h" |
8ca151b5 | 72 | |
854c5705 SS |
73 | /* |
74 | * New version of ADD_STA_sta command added new fields at the end of the | |
75 | * structure, so sending the size of the relevant API's structure is enough to | |
76 | * support both API versions. | |
77 | */ | |
78 | static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) | |
79 | { | |
80 | return iwl_mvm_has_new_rx_api(mvm) ? | |
81 | sizeof(struct iwl_mvm_add_sta_cmd) : | |
82 | sizeof(struct iwl_mvm_add_sta_cmd_v7); | |
83 | } | |
84 | ||
b92e661b EP |
85 | static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, |
86 | enum nl80211_iftype iftype) | |
8ca151b5 JB |
87 | { |
88 | int sta_id; | |
b92e661b | 89 | u32 reserved_ids = 0; |
8ca151b5 | 90 | |
b92e661b | 91 | BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32); |
8ca151b5 JB |
92 | WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); |
93 | ||
94 | lockdep_assert_held(&mvm->mutex); | |
95 | ||
b92e661b EP |
96 | /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ |
97 | if (iftype != NL80211_IFTYPE_STATION) | |
98 | reserved_ids = BIT(0); | |
99 | ||
8ca151b5 | 100 | /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ |
b92e661b EP |
101 | for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++) { |
102 | if (BIT(sta_id) & reserved_ids) | |
103 | continue; | |
104 | ||
8ca151b5 JB |
105 | if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], |
106 | lockdep_is_held(&mvm->mutex))) | |
107 | return sta_id; | |
b92e661b | 108 | } |
8ca151b5 JB |
109 | return IWL_MVM_STATION_COUNT; |
110 | } | |
111 | ||
7a453973 JB |
112 | /* send station add/update command to firmware */ |
113 | int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
24afba76 | 114 | bool update, unsigned int flags) |
8ca151b5 | 115 | { |
9d8ce6af | 116 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
4b8265ab EG |
117 | struct iwl_mvm_add_sta_cmd add_sta_cmd = { |
118 | .sta_id = mvm_sta->sta_id, | |
119 | .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), | |
120 | .add_modify = update ? 1 : 0, | |
121 | .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | | |
122 | STA_FLG_MIMO_EN_MSK), | |
cf0cda19 | 123 | .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), |
4b8265ab | 124 | }; |
8ca151b5 JB |
125 | int ret; |
126 | u32 status; | |
127 | u32 agg_size = 0, mpdu_dens = 0; | |
128 | ||
24afba76 | 129 | if (!update || (flags & STA_MODIFY_QUEUES)) { |
7a453973 JB |
130 | add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); |
131 | memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); | |
24afba76 LK |
132 | |
133 | if (flags & STA_MODIFY_QUEUES) | |
134 | add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; | |
7a453973 | 135 | } |
5bc5aaad JB |
136 | |
137 | switch (sta->bandwidth) { | |
138 | case IEEE80211_STA_RX_BW_160: | |
139 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); | |
140 | /* fall through */ | |
141 | case IEEE80211_STA_RX_BW_80: | |
142 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); | |
143 | /* fall through */ | |
144 | case IEEE80211_STA_RX_BW_40: | |
145 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); | |
146 | /* fall through */ | |
147 | case IEEE80211_STA_RX_BW_20: | |
148 | if (sta->ht_cap.ht_supported) | |
149 | add_sta_cmd.station_flags |= | |
150 | cpu_to_le32(STA_FLG_FAT_EN_20MHZ); | |
151 | break; | |
152 | } | |
153 | ||
154 | switch (sta->rx_nss) { | |
155 | case 1: | |
156 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
157 | break; | |
158 | case 2: | |
159 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); | |
160 | break; | |
161 | case 3 ... 8: | |
162 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); | |
163 | break; | |
164 | } | |
165 | ||
166 | switch (sta->smps_mode) { | |
167 | case IEEE80211_SMPS_AUTOMATIC: | |
168 | case IEEE80211_SMPS_NUM_MODES: | |
169 | WARN_ON(1); | |
170 | break; | |
171 | case IEEE80211_SMPS_STATIC: | |
172 | /* override NSS */ | |
173 | add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); | |
174 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
175 | break; | |
176 | case IEEE80211_SMPS_DYNAMIC: | |
177 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); | |
178 | break; | |
179 | case IEEE80211_SMPS_OFF: | |
180 | /* nothing */ | |
181 | break; | |
182 | } | |
8ca151b5 JB |
183 | |
184 | if (sta->ht_cap.ht_supported) { | |
185 | add_sta_cmd.station_flags_msk |= | |
186 | cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | | |
187 | STA_FLG_AGG_MPDU_DENS_MSK); | |
188 | ||
189 | mpdu_dens = sta->ht_cap.ampdu_density; | |
190 | } | |
191 | ||
192 | if (sta->vht_cap.vht_supported) { | |
193 | agg_size = sta->vht_cap.cap & | |
194 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; | |
195 | agg_size >>= | |
196 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; | |
197 | } else if (sta->ht_cap.ht_supported) { | |
198 | agg_size = sta->ht_cap.ampdu_factor; | |
199 | } | |
200 | ||
201 | add_sta_cmd.station_flags |= | |
202 | cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); | |
203 | add_sta_cmd.station_flags |= | |
204 | cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); | |
205 | ||
206 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
207 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
208 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 209 | &add_sta_cmd, &status); |
8ca151b5 JB |
210 | if (ret) |
211 | return ret; | |
212 | ||
837c4da9 | 213 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
214 | case ADD_STA_SUCCESS: |
215 | IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); | |
216 | break; | |
217 | default: | |
218 | ret = -EIO; | |
219 | IWL_ERR(mvm, "ADD_STA failed\n"); | |
220 | break; | |
221 | } | |
222 | ||
223 | return ret; | |
224 | } | |
225 | ||
a0f6bf2a AN |
226 | static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm, |
227 | struct ieee80211_sta *sta) | |
228 | { | |
229 | unsigned long used_hw_queues; | |
230 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
5d42e7b2 EG |
231 | unsigned int wdg_timeout = |
232 | iwl_mvm_get_wd_timeout(mvm, NULL, true, false); | |
a0f6bf2a AN |
233 | u32 ac; |
234 | ||
235 | lockdep_assert_held(&mvm->mutex); | |
236 | ||
237 | used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL); | |
238 | ||
239 | /* Find available queues, and allocate them to the ACs */ | |
240 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
241 | u8 queue = find_first_zero_bit(&used_hw_queues, | |
242 | mvm->first_agg_queue); | |
243 | ||
244 | if (queue >= mvm->first_agg_queue) { | |
245 | IWL_ERR(mvm, "Failed to allocate STA queue\n"); | |
246 | return -EBUSY; | |
247 | } | |
248 | ||
249 | __set_bit(queue, &used_hw_queues); | |
250 | mvmsta->hw_queue[ac] = queue; | |
251 | } | |
252 | ||
253 | /* Found a place for all queues - enable them */ | |
254 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
255 | iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac], | |
4ecafae9 | 256 | mvmsta->hw_queue[ac], |
5c1156ef LK |
257 | iwl_mvm_ac_to_tx_fifo[ac], 0, |
258 | wdg_timeout); | |
a0f6bf2a AN |
259 | mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]); |
260 | } | |
261 | ||
262 | return 0; | |
263 | } | |
264 | ||
265 | static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm, | |
266 | struct ieee80211_sta *sta) | |
267 | { | |
268 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
269 | unsigned long sta_msk; | |
270 | int i; | |
271 | ||
272 | lockdep_assert_held(&mvm->mutex); | |
273 | ||
274 | /* disable the TDLS STA-specific queues */ | |
275 | sta_msk = mvmsta->tfd_queue_msk; | |
a4ca3ed4 | 276 | for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE) |
06ecdba3 | 277 | iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0); |
a0f6bf2a AN |
278 | } |
279 | ||
24afba76 LK |
280 | static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, |
281 | struct ieee80211_sta *sta, u8 ac, int tid, | |
282 | struct ieee80211_hdr *hdr) | |
283 | { | |
284 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
285 | struct iwl_trans_txq_scd_cfg cfg = { | |
286 | .fifo = iwl_mvm_ac_to_tx_fifo[ac], | |
287 | .sta_id = mvmsta->sta_id, | |
288 | .tid = tid, | |
289 | .frame_limit = IWL_FRAME_LIMIT, | |
290 | }; | |
291 | unsigned int wdg_timeout = | |
292 | iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); | |
293 | u8 mac_queue = mvmsta->vif->hw_queue[ac]; | |
294 | int queue = -1; | |
295 | int ssn; | |
296 | ||
297 | lockdep_assert_held(&mvm->mutex); | |
298 | ||
d2515a99 | 299 | spin_lock_bh(&mvm->queue_info_lock); |
24afba76 LK |
300 | |
301 | /* | |
302 | * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one | |
303 | * exists | |
304 | */ | |
305 | if (!ieee80211_is_data_qos(hdr->frame_control) || | |
306 | ieee80211_is_qos_nullfunc(hdr->frame_control)) { | |
307 | queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_MGMT_QUEUE, | |
308 | IWL_MVM_DQA_MAX_MGMT_QUEUE); | |
309 | if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) | |
310 | IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", | |
311 | queue); | |
312 | ||
313 | /* If no such queue is found, we'll use a DATA queue instead */ | |
314 | } | |
315 | ||
316 | if (queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { | |
317 | queue = mvmsta->reserved_queue; | |
318 | IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); | |
319 | } | |
320 | ||
321 | if (queue < 0) | |
322 | queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_DATA_QUEUE, | |
323 | IWL_MVM_DQA_MAX_DATA_QUEUE); | |
324 | if (queue >= 0) | |
325 | mvm->queue_info[queue].setup_reserved = false; | |
326 | ||
d2515a99 | 327 | spin_unlock_bh(&mvm->queue_info_lock); |
24afba76 LK |
328 | |
329 | /* TODO: support shared queues for same RA */ | |
330 | if (queue < 0) | |
331 | return -ENOSPC; | |
332 | ||
333 | /* | |
334 | * Actual en/disablement of aggregations is through the ADD_STA HCMD, | |
335 | * but for configuring the SCD to send A-MPDUs we need to mark the queue | |
336 | * as aggregatable. | |
337 | * Mark all DATA queues as allowing to be aggregated at some point | |
338 | */ | |
d5216a28 LK |
339 | cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || |
340 | queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); | |
24afba76 LK |
341 | |
342 | IWL_DEBUG_TX_QUEUES(mvm, "Allocating queue #%d to sta %d on tid %d\n", | |
343 | queue, mvmsta->sta_id, tid); | |
344 | ||
345 | ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); | |
346 | iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg, | |
347 | wdg_timeout); | |
348 | ||
349 | spin_lock_bh(&mvmsta->lock); | |
350 | mvmsta->tid_data[tid].txq_id = queue; | |
351 | mvmsta->tfd_queue_msk |= BIT(queue); | |
352 | ||
353 | if (mvmsta->reserved_queue == queue) | |
354 | mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; | |
355 | spin_unlock_bh(&mvmsta->lock); | |
356 | ||
357 | return iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); | |
358 | } | |
359 | ||
360 | static inline u8 iwl_mvm_tid_to_ac_queue(int tid) | |
361 | { | |
362 | if (tid == IWL_MAX_TID_COUNT) | |
363 | return IEEE80211_AC_VO; /* MGMT */ | |
364 | ||
365 | return tid_to_mac80211_ac[tid]; | |
366 | } | |
367 | ||
368 | static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, | |
369 | struct ieee80211_sta *sta, int tid) | |
370 | { | |
371 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
372 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; | |
373 | struct sk_buff *skb; | |
374 | struct ieee80211_hdr *hdr; | |
375 | struct sk_buff_head deferred_tx; | |
376 | u8 mac_queue; | |
377 | bool no_queue = false; /* Marks if there is a problem with the queue */ | |
378 | u8 ac; | |
379 | ||
380 | lockdep_assert_held(&mvm->mutex); | |
381 | ||
382 | skb = skb_peek(&tid_data->deferred_tx_frames); | |
383 | if (!skb) | |
384 | return; | |
385 | hdr = (void *)skb->data; | |
386 | ||
387 | ac = iwl_mvm_tid_to_ac_queue(tid); | |
388 | mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; | |
389 | ||
390 | if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE && | |
391 | iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { | |
392 | IWL_ERR(mvm, | |
393 | "Can't alloc TXQ for sta %d tid %d - dropping frame\n", | |
394 | mvmsta->sta_id, tid); | |
395 | ||
396 | /* | |
397 | * Mark queue as problematic so later the deferred traffic is | |
398 | * freed, as we can do nothing with it | |
399 | */ | |
400 | no_queue = true; | |
401 | } | |
402 | ||
403 | __skb_queue_head_init(&deferred_tx); | |
404 | ||
d2515a99 LK |
405 | /* Disable bottom-halves when entering TX path */ |
406 | local_bh_disable(); | |
24afba76 LK |
407 | spin_lock(&mvmsta->lock); |
408 | skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); | |
409 | spin_unlock(&mvmsta->lock); | |
410 | ||
24afba76 LK |
411 | while ((skb = __skb_dequeue(&deferred_tx))) |
412 | if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) | |
413 | ieee80211_free_txskb(mvm->hw, skb); | |
414 | local_bh_enable(); | |
415 | ||
416 | /* Wake queue */ | |
417 | iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); | |
418 | } | |
419 | ||
420 | void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) | |
421 | { | |
422 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, | |
423 | add_stream_wk); | |
424 | struct ieee80211_sta *sta; | |
425 | struct iwl_mvm_sta *mvmsta; | |
426 | unsigned long deferred_tid_traffic; | |
427 | int sta_id, tid; | |
428 | ||
429 | mutex_lock(&mvm->mutex); | |
430 | ||
431 | /* Go over all stations with deferred traffic */ | |
432 | for_each_set_bit(sta_id, mvm->sta_deferred_frames, | |
433 | IWL_MVM_STATION_COUNT) { | |
434 | clear_bit(sta_id, mvm->sta_deferred_frames); | |
435 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
436 | lockdep_is_held(&mvm->mutex)); | |
437 | if (IS_ERR_OR_NULL(sta)) | |
438 | continue; | |
439 | ||
440 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
441 | deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; | |
442 | ||
443 | for_each_set_bit(tid, &deferred_tid_traffic, | |
444 | IWL_MAX_TID_COUNT + 1) | |
445 | iwl_mvm_tx_deferred_stream(mvm, sta, tid); | |
446 | } | |
447 | ||
448 | mutex_unlock(&mvm->mutex); | |
449 | } | |
450 | ||
451 | static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, | |
d5216a28 LK |
452 | struct ieee80211_sta *sta, |
453 | enum nl80211_iftype vif_type) | |
24afba76 LK |
454 | { |
455 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
456 | int queue; | |
457 | ||
458 | spin_lock_bh(&mvm->queue_info_lock); | |
459 | ||
460 | /* Make sure we have free resources for this STA */ | |
d5216a28 LK |
461 | if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && |
462 | !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount && | |
463 | !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].setup_reserved) | |
464 | queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; | |
465 | else | |
466 | queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_DATA_QUEUE, | |
467 | IWL_MVM_DQA_MAX_DATA_QUEUE); | |
24afba76 LK |
468 | if (queue < 0) { |
469 | spin_unlock_bh(&mvm->queue_info_lock); | |
470 | IWL_ERR(mvm, "No available queues for new station\n"); | |
471 | return -ENOSPC; | |
472 | } | |
473 | mvm->queue_info[queue].setup_reserved = true; | |
474 | ||
475 | spin_unlock_bh(&mvm->queue_info_lock); | |
476 | ||
477 | mvmsta->reserved_queue = queue; | |
478 | ||
479 | IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", | |
480 | queue, mvmsta->sta_id); | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
8ca151b5 JB |
485 | int iwl_mvm_add_sta(struct iwl_mvm *mvm, |
486 | struct ieee80211_vif *vif, | |
487 | struct ieee80211_sta *sta) | |
488 | { | |
489 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 490 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
a571f5f6 | 491 | struct iwl_mvm_rxq_dup_data *dup_data; |
8ca151b5 JB |
492 | int i, ret, sta_id; |
493 | ||
494 | lockdep_assert_held(&mvm->mutex); | |
495 | ||
496 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) | |
b92e661b EP |
497 | sta_id = iwl_mvm_find_free_sta_id(mvm, |
498 | ieee80211_vif_type_p2p(vif)); | |
8ca151b5 JB |
499 | else |
500 | sta_id = mvm_sta->sta_id; | |
501 | ||
36f4631c | 502 | if (sta_id == IWL_MVM_STATION_COUNT) |
8ca151b5 JB |
503 | return -ENOSPC; |
504 | ||
505 | spin_lock_init(&mvm_sta->lock); | |
506 | ||
507 | mvm_sta->sta_id = sta_id; | |
508 | mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, | |
509 | mvmvif->color); | |
510 | mvm_sta->vif = vif; | |
511 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
9ee718aa EL |
512 | mvm_sta->tx_protection = 0; |
513 | mvm_sta->tt_tx_protection = false; | |
8ca151b5 JB |
514 | |
515 | /* HW restart, don't assume the memory has been zeroed */ | |
e3d4bc8c | 516 | atomic_set(&mvm->pending_frames[sta_id], 0); |
69191afe | 517 | mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ |
8ca151b5 | 518 | mvm_sta->tfd_queue_msk = 0; |
a0f6bf2a AN |
519 | |
520 | /* allocate new queues for a TDLS station */ | |
521 | if (sta->tdls) { | |
522 | ret = iwl_mvm_tdls_sta_init(mvm, sta); | |
523 | if (ret) | |
524 | return ret; | |
24afba76 | 525 | } else if (!iwl_mvm_is_dqa_supported(mvm)) { |
a0f6bf2a AN |
526 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
527 | if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) | |
528 | mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); | |
529 | } | |
8ca151b5 | 530 | |
6d9d32b8 | 531 | /* for HW restart - reset everything but the sequence number */ |
24afba76 | 532 | for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { |
6d9d32b8 JB |
533 | u16 seq = mvm_sta->tid_data[i].seq_number; |
534 | memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); | |
535 | mvm_sta->tid_data[i].seq_number = seq; | |
24afba76 LK |
536 | |
537 | if (!iwl_mvm_is_dqa_supported(mvm)) | |
538 | continue; | |
539 | ||
540 | /* | |
541 | * Mark all queues for this STA as unallocated and defer TX | |
542 | * frames until the queue is allocated | |
543 | */ | |
544 | mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; | |
545 | skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); | |
6d9d32b8 | 546 | } |
24afba76 | 547 | mvm_sta->deferred_traffic_tid_map = 0; |
efed6640 | 548 | mvm_sta->agg_tids = 0; |
8ca151b5 | 549 | |
a571f5f6 SS |
550 | if (iwl_mvm_has_new_rx_api(mvm) && |
551 | !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
552 | dup_data = kcalloc(mvm->trans->num_rx_queues, | |
553 | sizeof(*dup_data), | |
554 | GFP_KERNEL); | |
555 | if (!dup_data) | |
556 | return -ENOMEM; | |
557 | mvm_sta->dup_data = dup_data; | |
558 | } | |
559 | ||
24afba76 | 560 | if (iwl_mvm_is_dqa_supported(mvm)) { |
d5216a28 LK |
561 | ret = iwl_mvm_reserve_sta_stream(mvm, sta, |
562 | ieee80211_vif_type_p2p(vif)); | |
24afba76 LK |
563 | if (ret) |
564 | goto err; | |
565 | } | |
566 | ||
567 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0); | |
8ca151b5 | 568 | if (ret) |
a0f6bf2a | 569 | goto err; |
8ca151b5 | 570 | |
9e848010 JB |
571 | if (vif->type == NL80211_IFTYPE_STATION) { |
572 | if (!sta->tdls) { | |
573 | WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); | |
574 | mvmvif->ap_sta_id = sta_id; | |
575 | } else { | |
576 | WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); | |
577 | } | |
578 | } | |
8ca151b5 JB |
579 | |
580 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); | |
581 | ||
582 | return 0; | |
a0f6bf2a AN |
583 | |
584 | err: | |
585 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
586 | return ret; | |
8ca151b5 JB |
587 | } |
588 | ||
7a453973 JB |
589 | int iwl_mvm_update_sta(struct iwl_mvm *mvm, |
590 | struct ieee80211_vif *vif, | |
591 | struct ieee80211_sta *sta) | |
592 | { | |
24afba76 | 593 | return iwl_mvm_sta_send_to_fw(mvm, sta, true, 0); |
7a453973 JB |
594 | } |
595 | ||
8ca151b5 JB |
596 | int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, |
597 | bool drain) | |
598 | { | |
f9dc0004 | 599 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
600 | int ret; |
601 | u32 status; | |
602 | ||
603 | lockdep_assert_held(&mvm->mutex); | |
604 | ||
605 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
606 | cmd.sta_id = mvmsta->sta_id; | |
607 | cmd.add_modify = STA_MODE_MODIFY; | |
608 | cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; | |
609 | cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); | |
610 | ||
611 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
612 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
613 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 614 | &cmd, &status); |
8ca151b5 JB |
615 | if (ret) |
616 | return ret; | |
617 | ||
837c4da9 | 618 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
619 | case ADD_STA_SUCCESS: |
620 | IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", | |
621 | mvmsta->sta_id); | |
622 | break; | |
623 | default: | |
624 | ret = -EIO; | |
625 | IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", | |
626 | mvmsta->sta_id); | |
627 | break; | |
628 | } | |
629 | ||
630 | return ret; | |
631 | } | |
632 | ||
633 | /* | |
634 | * Remove a station from the FW table. Before sending the command to remove | |
635 | * the station validate that the station is indeed known to the driver (sanity | |
636 | * only). | |
637 | */ | |
638 | static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) | |
639 | { | |
640 | struct ieee80211_sta *sta; | |
641 | struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { | |
642 | .sta_id = sta_id, | |
643 | }; | |
644 | int ret; | |
645 | ||
646 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
647 | lockdep_is_held(&mvm->mutex)); | |
648 | ||
649 | /* Note: internal stations are marked as error values */ | |
650 | if (!sta) { | |
651 | IWL_ERR(mvm, "Invalid station id\n"); | |
652 | return -EINVAL; | |
653 | } | |
654 | ||
a1022927 | 655 | ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, |
8ca151b5 JB |
656 | sizeof(rm_sta_cmd), &rm_sta_cmd); |
657 | if (ret) { | |
658 | IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); | |
659 | return ret; | |
660 | } | |
661 | ||
662 | return 0; | |
663 | } | |
664 | ||
665 | void iwl_mvm_sta_drained_wk(struct work_struct *wk) | |
666 | { | |
667 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); | |
668 | u8 sta_id; | |
669 | ||
670 | /* | |
671 | * The mutex is needed because of the SYNC cmd, but not only: if the | |
672 | * work would run concurrently with iwl_mvm_rm_sta, it would run before | |
673 | * iwl_mvm_rm_sta sets the station as busy, and exit. Then | |
674 | * iwl_mvm_rm_sta would set the station as busy, and nobody will clean | |
675 | * that later. | |
676 | */ | |
677 | mutex_lock(&mvm->mutex); | |
678 | ||
679 | for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { | |
680 | int ret; | |
681 | struct ieee80211_sta *sta = | |
682 | rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
683 | lockdep_is_held(&mvm->mutex)); | |
684 | ||
1ddbbb0c JB |
685 | /* |
686 | * This station is in use or RCU-removed; the latter happens in | |
687 | * managed mode, where mac80211 removes the station before we | |
688 | * can remove it from firmware (we can only do that after the | |
689 | * MAC is marked unassociated), and possibly while the deauth | |
690 | * frame to disconnect from the AP is still queued. Then, the | |
691 | * station pointer is -ENOENT when the last skb is reclaimed. | |
692 | */ | |
693 | if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) | |
8ca151b5 JB |
694 | continue; |
695 | ||
696 | if (PTR_ERR(sta) == -EINVAL) { | |
697 | IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", | |
698 | sta_id); | |
699 | continue; | |
700 | } | |
701 | ||
702 | if (!sta) { | |
703 | IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", | |
704 | sta_id); | |
705 | continue; | |
706 | } | |
707 | ||
708 | WARN_ON(PTR_ERR(sta) != -EBUSY); | |
709 | /* This station was removed and we waited until it got drained, | |
710 | * we can now proceed and remove it. | |
711 | */ | |
712 | ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
713 | if (ret) { | |
714 | IWL_ERR(mvm, | |
715 | "Couldn't remove sta %d after it was drained\n", | |
716 | sta_id); | |
717 | continue; | |
718 | } | |
c531c771 | 719 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 | 720 | clear_bit(sta_id, mvm->sta_drained); |
a0f6bf2a AN |
721 | |
722 | if (mvm->tfd_drained[sta_id]) { | |
723 | unsigned long i, msk = mvm->tfd_drained[sta_id]; | |
724 | ||
a4ca3ed4 | 725 | for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) |
06ecdba3 AN |
726 | iwl_mvm_disable_txq(mvm, i, i, |
727 | IWL_MAX_TID_COUNT, 0); | |
a0f6bf2a AN |
728 | |
729 | mvm->tfd_drained[sta_id] = 0; | |
730 | IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", | |
731 | sta_id, msk); | |
732 | } | |
8ca151b5 JB |
733 | } |
734 | ||
735 | mutex_unlock(&mvm->mutex); | |
736 | } | |
737 | ||
24afba76 LK |
738 | static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, |
739 | struct ieee80211_vif *vif, | |
740 | struct iwl_mvm_sta *mvm_sta) | |
741 | { | |
742 | int ac; | |
743 | int i; | |
744 | ||
745 | lockdep_assert_held(&mvm->mutex); | |
746 | ||
747 | for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { | |
748 | if (mvm_sta->tid_data[i].txq_id == IEEE80211_INVAL_HW_QUEUE) | |
749 | continue; | |
750 | ||
751 | ac = iwl_mvm_tid_to_ac_queue(i); | |
752 | iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, | |
753 | vif->hw_queue[ac], i, 0); | |
754 | mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; | |
755 | } | |
756 | } | |
757 | ||
8ca151b5 JB |
758 | int iwl_mvm_rm_sta(struct iwl_mvm *mvm, |
759 | struct ieee80211_vif *vif, | |
760 | struct ieee80211_sta *sta) | |
761 | { | |
762 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 763 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
764 | int ret; |
765 | ||
766 | lockdep_assert_held(&mvm->mutex); | |
767 | ||
a571f5f6 SS |
768 | if (iwl_mvm_has_new_rx_api(mvm)) |
769 | kfree(mvm_sta->dup_data); | |
770 | ||
8ca151b5 JB |
771 | if (vif->type == NL80211_IFTYPE_STATION && |
772 | mvmvif->ap_sta_id == mvm_sta->sta_id) { | |
fe92e32a EG |
773 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
774 | if (ret) | |
775 | return ret; | |
80d85655 | 776 | /* flush its queues here since we are freeing mvm_sta */ |
5888a40c | 777 | ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); |
fe92e32a EG |
778 | if (ret) |
779 | return ret; | |
780 | ret = iwl_trans_wait_tx_queue_empty(mvm->trans, | |
781 | mvm_sta->tfd_queue_msk); | |
782 | if (ret) | |
783 | return ret; | |
784 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); | |
80d85655 | 785 | |
24afba76 LK |
786 | /* If DQA is supported - the queues can be disabled now */ |
787 | if (iwl_mvm_is_dqa_supported(mvm)) | |
788 | iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); | |
789 | ||
8ca151b5 JB |
790 | /* if we are associated - we can't remove the AP STA now */ |
791 | if (vif->bss_conf.assoc) | |
792 | return ret; | |
793 | ||
794 | /* unassoc - go ahead - remove the AP STA now */ | |
795 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
37577fe2 EP |
796 | |
797 | /* clear d0i3_ap_sta_id if no longer relevant */ | |
798 | if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) | |
799 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
8ca151b5 JB |
800 | } |
801 | ||
1d3c3f63 AN |
802 | /* |
803 | * This shouldn't happen - the TDLS channel switch should be canceled | |
804 | * before the STA is removed. | |
805 | */ | |
806 | if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { | |
807 | mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; | |
808 | cancel_delayed_work(&mvm->tdls_cs.dwork); | |
809 | } | |
810 | ||
e3d4bc8c EG |
811 | /* |
812 | * Make sure that the tx response code sees the station as -EBUSY and | |
813 | * calls the drain worker. | |
814 | */ | |
815 | spin_lock_bh(&mvm_sta->lock); | |
8ca151b5 JB |
816 | /* |
817 | * There are frames pending on the AC queues for this station. | |
818 | * We need to wait until all the frames are drained... | |
819 | */ | |
e3d4bc8c | 820 | if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { |
8ca151b5 JB |
821 | rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], |
822 | ERR_PTR(-EBUSY)); | |
e3d4bc8c | 823 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
824 | |
825 | /* disable TDLS sta queues on drain complete */ | |
826 | if (sta->tdls) { | |
827 | mvm->tfd_drained[mvm_sta->sta_id] = | |
828 | mvm_sta->tfd_queue_msk; | |
829 | IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", | |
830 | mvm_sta->sta_id); | |
831 | } | |
832 | ||
e3d4bc8c | 833 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
8ca151b5 | 834 | } else { |
e3d4bc8c | 835 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
836 | |
837 | if (sta->tdls) | |
838 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
839 | ||
8ca151b5 | 840 | ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); |
c531c771 | 841 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); |
8ca151b5 JB |
842 | } |
843 | ||
844 | return ret; | |
845 | } | |
846 | ||
847 | int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, | |
848 | struct ieee80211_vif *vif, | |
849 | u8 sta_id) | |
850 | { | |
851 | int ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
852 | ||
853 | lockdep_assert_held(&mvm->mutex); | |
854 | ||
c531c771 | 855 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 JB |
856 | return ret; |
857 | } | |
858 | ||
0e39eb03 CRI |
859 | int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, |
860 | struct iwl_mvm_int_sta *sta, | |
861 | u32 qmask, enum nl80211_iftype iftype) | |
8ca151b5 JB |
862 | { |
863 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
b92e661b | 864 | sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); |
8ca151b5 JB |
865 | if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) |
866 | return -ENOSPC; | |
867 | } | |
868 | ||
869 | sta->tfd_queue_msk = qmask; | |
870 | ||
871 | /* put a non-NULL value so iterating over the stations won't stop */ | |
872 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); | |
873 | return 0; | |
874 | } | |
875 | ||
712b24ad JB |
876 | static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, |
877 | struct iwl_mvm_int_sta *sta) | |
8ca151b5 | 878 | { |
c531c771 | 879 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); |
8ca151b5 JB |
880 | memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); |
881 | sta->sta_id = IWL_MVM_STATION_COUNT; | |
882 | } | |
883 | ||
884 | static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, | |
885 | struct iwl_mvm_int_sta *sta, | |
886 | const u8 *addr, | |
887 | u16 mac_id, u16 color) | |
888 | { | |
f9dc0004 | 889 | struct iwl_mvm_add_sta_cmd cmd; |
8ca151b5 JB |
890 | int ret; |
891 | u32 status; | |
892 | ||
893 | lockdep_assert_held(&mvm->mutex); | |
894 | ||
f9dc0004 | 895 | memset(&cmd, 0, sizeof(cmd)); |
8ca151b5 JB |
896 | cmd.sta_id = sta->sta_id; |
897 | cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, | |
898 | color)); | |
899 | ||
900 | cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); | |
cf0cda19 | 901 | cmd.tid_disable_tx = cpu_to_le16(0xffff); |
8ca151b5 JB |
902 | |
903 | if (addr) | |
904 | memcpy(cmd.addr, addr, ETH_ALEN); | |
905 | ||
854c5705 SS |
906 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
907 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 908 | &cmd, &status); |
8ca151b5 JB |
909 | if (ret) |
910 | return ret; | |
911 | ||
837c4da9 | 912 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
913 | case ADD_STA_SUCCESS: |
914 | IWL_DEBUG_INFO(mvm, "Internal station added.\n"); | |
915 | return 0; | |
916 | default: | |
917 | ret = -EIO; | |
918 | IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", | |
919 | status); | |
920 | break; | |
921 | } | |
922 | return ret; | |
923 | } | |
924 | ||
925 | int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) | |
926 | { | |
4cf677fd EG |
927 | unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? |
928 | mvm->cfg->base_params->wd_timeout : | |
929 | IWL_WATCHDOG_DISABLED; | |
8ca151b5 JB |
930 | int ret; |
931 | ||
932 | lockdep_assert_held(&mvm->mutex); | |
933 | ||
7da91b0e | 934 | /* Map Aux queue to fifo - needs to happen before adding Aux station */ |
4ecafae9 | 935 | iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, |
5c1156ef | 936 | IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); |
7da91b0e AM |
937 | |
938 | /* Allocate aux station and assign to it the aux queue */ | |
939 | ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), | |
b92e661b | 940 | NL80211_IFTYPE_UNSPECIFIED); |
8ca151b5 JB |
941 | if (ret) |
942 | return ret; | |
943 | ||
944 | ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, | |
945 | MAC_INDEX_AUX, 0); | |
946 | ||
947 | if (ret) | |
948 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
949 | return ret; | |
950 | } | |
951 | ||
0e39eb03 CRI |
952 | int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
953 | { | |
954 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
955 | ||
956 | lockdep_assert_held(&mvm->mutex); | |
957 | return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, | |
958 | mvmvif->id, 0); | |
959 | } | |
960 | ||
961 | int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
962 | { | |
963 | int ret; | |
964 | ||
965 | lockdep_assert_held(&mvm->mutex); | |
966 | ||
967 | ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); | |
968 | if (ret) | |
969 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
970 | ||
971 | return ret; | |
972 | } | |
973 | ||
974 | void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) | |
975 | { | |
976 | iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); | |
977 | } | |
978 | ||
712b24ad JB |
979 | void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) |
980 | { | |
981 | lockdep_assert_held(&mvm->mutex); | |
982 | ||
983 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
984 | } | |
985 | ||
8ca151b5 JB |
986 | /* |
987 | * Send the add station command for the vif's broadcast station. | |
988 | * Assumes that the station was already allocated. | |
989 | * | |
990 | * @mvm: the mvm component | |
991 | * @vif: the interface to which the broadcast station is added | |
992 | * @bsta: the broadcast station to add. | |
993 | */ | |
013290aa | 994 | int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
995 | { |
996 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 997 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
5023d966 | 998 | static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
a4243402 | 999 | const u8 *baddr = _baddr; |
8ca151b5 JB |
1000 | |
1001 | lockdep_assert_held(&mvm->mutex); | |
1002 | ||
de24f638 LK |
1003 | if (iwl_mvm_is_dqa_supported(mvm)) { |
1004 | struct iwl_trans_txq_scd_cfg cfg = { | |
1005 | .fifo = IWL_MVM_TX_FIFO_VO, | |
1006 | .sta_id = mvmvif->bcast_sta.sta_id, | |
1007 | .tid = IWL_MAX_TID_COUNT, | |
1008 | .aggregate = false, | |
1009 | .frame_limit = IWL_FRAME_LIMIT, | |
1010 | }; | |
1011 | unsigned int wdg_timeout = | |
1012 | iwl_mvm_get_wd_timeout(mvm, vif, false, false); | |
1013 | int queue; | |
1014 | ||
1015 | if ((vif->type == NL80211_IFTYPE_AP) && | |
1016 | (mvmvif->bcast_sta.tfd_queue_msk & | |
1017 | BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE))) | |
1018 | queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; | |
4c965139 LK |
1019 | else if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) && |
1020 | (mvmvif->bcast_sta.tfd_queue_msk & | |
1021 | BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE))) | |
1022 | queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE; | |
de24f638 LK |
1023 | else if (WARN(1, "Missed required TXQ for adding bcast STA\n")) |
1024 | return -EINVAL; | |
1025 | ||
1026 | iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, &cfg, | |
1027 | wdg_timeout); | |
1028 | } | |
1029 | ||
5023d966 JB |
1030 | if (vif->type == NL80211_IFTYPE_ADHOC) |
1031 | baddr = vif->bss_conf.bssid; | |
1032 | ||
8ca151b5 JB |
1033 | if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) |
1034 | return -ENOSPC; | |
1035 | ||
1036 | return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, | |
1037 | mvmvif->id, mvmvif->color); | |
1038 | } | |
1039 | ||
1040 | /* Send the FW a request to remove the station from it's internal data | |
1041 | * structures, but DO NOT remove the entry from the local data structures. */ | |
013290aa | 1042 | int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 | 1043 | { |
013290aa | 1044 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1045 | int ret; |
1046 | ||
1047 | lockdep_assert_held(&mvm->mutex); | |
1048 | ||
013290aa | 1049 | ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); |
8ca151b5 JB |
1050 | if (ret) |
1051 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
1052 | return ret; | |
1053 | } | |
1054 | ||
013290aa JB |
1055 | int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
1056 | { | |
1057 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
de24f638 | 1058 | u32 qmask = 0; |
013290aa JB |
1059 | |
1060 | lockdep_assert_held(&mvm->mutex); | |
1061 | ||
de24f638 LK |
1062 | if (!iwl_mvm_is_dqa_supported(mvm)) |
1063 | qmask = iwl_mvm_mac_get_queues_mask(vif); | |
013290aa | 1064 | |
de24f638 LK |
1065 | if (vif->type == NL80211_IFTYPE_AP) { |
1066 | /* | |
1067 | * The firmware defines the TFD queue mask to only be relevant | |
1068 | * for *unicast* queues, so the multicast (CAB) queue shouldn't | |
1069 | * be included. | |
1070 | */ | |
013290aa JB |
1071 | qmask &= ~BIT(vif->cab_queue); |
1072 | ||
de24f638 LK |
1073 | if (iwl_mvm_is_dqa_supported(mvm)) |
1074 | qmask |= BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE); | |
4c965139 LK |
1075 | } else if (iwl_mvm_is_dqa_supported(mvm) && |
1076 | vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
1077 | qmask |= BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE); | |
de24f638 LK |
1078 | } |
1079 | ||
013290aa JB |
1080 | return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, |
1081 | ieee80211_vif_type_p2p(vif)); | |
1082 | } | |
1083 | ||
8ca151b5 JB |
1084 | /* Allocate a new station entry for the broadcast station to the given vif, |
1085 | * and send it to the FW. | |
1086 | * Note that each P2P mac should have its own broadcast station. | |
1087 | * | |
1088 | * @mvm: the mvm component | |
1089 | * @vif: the interface to which the broadcast station is added | |
1090 | * @bsta: the broadcast station to add. */ | |
013290aa | 1091 | int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
1092 | { |
1093 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 1094 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
8ca151b5 JB |
1095 | int ret; |
1096 | ||
1097 | lockdep_assert_held(&mvm->mutex); | |
1098 | ||
013290aa | 1099 | ret = iwl_mvm_alloc_bcast_sta(mvm, vif); |
8ca151b5 JB |
1100 | if (ret) |
1101 | return ret; | |
1102 | ||
013290aa | 1103 | ret = iwl_mvm_send_add_bcast_sta(mvm, vif); |
8ca151b5 JB |
1104 | |
1105 | if (ret) | |
1106 | iwl_mvm_dealloc_int_sta(mvm, bsta); | |
013290aa | 1107 | |
8ca151b5 JB |
1108 | return ret; |
1109 | } | |
1110 | ||
013290aa JB |
1111 | void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
1112 | { | |
1113 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1114 | ||
1115 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
1116 | } | |
1117 | ||
8ca151b5 JB |
1118 | /* |
1119 | * Send the FW a request to remove the station from it's internal data | |
1120 | * structures, and in addition remove it from the local data structure. | |
1121 | */ | |
013290aa | 1122 | int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
1123 | { |
1124 | int ret; | |
1125 | ||
1126 | lockdep_assert_held(&mvm->mutex); | |
1127 | ||
013290aa JB |
1128 | ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); |
1129 | ||
1130 | iwl_mvm_dealloc_bcast_sta(mvm, vif); | |
8ca151b5 | 1131 | |
8ca151b5 JB |
1132 | return ret; |
1133 | } | |
1134 | ||
113a0447 EG |
1135 | #define IWL_MAX_RX_BA_SESSIONS 16 |
1136 | ||
8ca151b5 | 1137 | int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
854c5705 | 1138 | int tid, u16 ssn, bool start, u8 buf_size) |
8ca151b5 | 1139 | { |
9d8ce6af | 1140 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1141 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
1142 | int ret; |
1143 | u32 status; | |
1144 | ||
1145 | lockdep_assert_held(&mvm->mutex); | |
1146 | ||
113a0447 EG |
1147 | if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { |
1148 | IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); | |
1149 | return -ENOSPC; | |
1150 | } | |
1151 | ||
8ca151b5 JB |
1152 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
1153 | cmd.sta_id = mvm_sta->sta_id; | |
1154 | cmd.add_modify = STA_MODE_MODIFY; | |
93a42667 EG |
1155 | if (start) { |
1156 | cmd.add_immediate_ba_tid = (u8) tid; | |
1157 | cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
854c5705 | 1158 | cmd.rx_ba_window = cpu_to_le16((u16)buf_size); |
93a42667 EG |
1159 | } else { |
1160 | cmd.remove_immediate_ba_tid = (u8) tid; | |
1161 | } | |
8ca151b5 JB |
1162 | cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : |
1163 | STA_MODIFY_REMOVE_BA_TID; | |
1164 | ||
1165 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
1166 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
1167 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 1168 | &cmd, &status); |
8ca151b5 JB |
1169 | if (ret) |
1170 | return ret; | |
1171 | ||
837c4da9 | 1172 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
1173 | case ADD_STA_SUCCESS: |
1174 | IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", | |
1175 | start ? "start" : "stopp"); | |
1176 | break; | |
1177 | case ADD_STA_IMMEDIATE_BA_FAILURE: | |
1178 | IWL_WARN(mvm, "RX BA Session refused by fw\n"); | |
1179 | ret = -ENOSPC; | |
1180 | break; | |
1181 | default: | |
1182 | ret = -EIO; | |
1183 | IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", | |
1184 | start ? "start" : "stopp", status); | |
1185 | break; | |
1186 | } | |
1187 | ||
113a0447 EG |
1188 | if (!ret) { |
1189 | if (start) | |
1190 | mvm->rx_ba_sessions++; | |
1191 | else if (mvm->rx_ba_sessions > 0) | |
1192 | /* check that restart flow didn't zero the counter */ | |
1193 | mvm->rx_ba_sessions--; | |
1194 | } | |
1195 | ||
8ca151b5 JB |
1196 | return ret; |
1197 | } | |
1198 | ||
1199 | static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
1200 | int tid, u8 queue, bool start) | |
1201 | { | |
9d8ce6af | 1202 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1203 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
1204 | int ret; |
1205 | u32 status; | |
1206 | ||
1207 | lockdep_assert_held(&mvm->mutex); | |
1208 | ||
1209 | if (start) { | |
1210 | mvm_sta->tfd_queue_msk |= BIT(queue); | |
1211 | mvm_sta->tid_disable_agg &= ~BIT(tid); | |
1212 | } else { | |
1213 | mvm_sta->tfd_queue_msk &= ~BIT(queue); | |
1214 | mvm_sta->tid_disable_agg |= BIT(tid); | |
1215 | } | |
1216 | ||
1217 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); | |
1218 | cmd.sta_id = mvm_sta->sta_id; | |
1219 | cmd.add_modify = STA_MODE_MODIFY; | |
1220 | cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; | |
1221 | cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
1222 | cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); | |
1223 | ||
1224 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
1225 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
1226 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 1227 | &cmd, &status); |
8ca151b5 JB |
1228 | if (ret) |
1229 | return ret; | |
1230 | ||
837c4da9 | 1231 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
1232 | case ADD_STA_SUCCESS: |
1233 | break; | |
1234 | default: | |
1235 | ret = -EIO; | |
1236 | IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", | |
1237 | start ? "start" : "stopp", status); | |
1238 | break; | |
1239 | } | |
1240 | ||
1241 | return ret; | |
1242 | } | |
1243 | ||
b797e3fb | 1244 | const u8 tid_to_mac80211_ac[] = { |
8ca151b5 JB |
1245 | IEEE80211_AC_BE, |
1246 | IEEE80211_AC_BK, | |
1247 | IEEE80211_AC_BK, | |
1248 | IEEE80211_AC_BE, | |
1249 | IEEE80211_AC_VI, | |
1250 | IEEE80211_AC_VI, | |
1251 | IEEE80211_AC_VO, | |
1252 | IEEE80211_AC_VO, | |
1253 | }; | |
1254 | ||
3e56eadf JB |
1255 | static const u8 tid_to_ucode_ac[] = { |
1256 | AC_BE, | |
1257 | AC_BK, | |
1258 | AC_BK, | |
1259 | AC_BE, | |
1260 | AC_VI, | |
1261 | AC_VI, | |
1262 | AC_VO, | |
1263 | AC_VO, | |
1264 | }; | |
1265 | ||
8ca151b5 JB |
1266 | int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1267 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) | |
1268 | { | |
5b577a90 | 1269 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1270 | struct iwl_mvm_tid_data *tid_data; |
1271 | int txq_id; | |
4ecafae9 | 1272 | int ret; |
8ca151b5 JB |
1273 | |
1274 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
1275 | return -EINVAL; | |
1276 | ||
1277 | if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { | |
1278 | IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", | |
1279 | mvmsta->tid_data[tid].state); | |
1280 | return -ENXIO; | |
1281 | } | |
1282 | ||
1283 | lockdep_assert_held(&mvm->mutex); | |
1284 | ||
b2492501 AN |
1285 | spin_lock_bh(&mvmsta->lock); |
1286 | ||
1287 | /* possible race condition - we entered D0i3 while starting agg */ | |
1288 | if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { | |
1289 | spin_unlock_bh(&mvmsta->lock); | |
1290 | IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); | |
1291 | return -EIO; | |
1292 | } | |
1293 | ||
4ecafae9 LK |
1294 | spin_lock_bh(&mvm->queue_info_lock); |
1295 | ||
1296 | txq_id = iwl_mvm_find_free_queue(mvm, mvm->first_agg_queue, | |
1297 | mvm->last_agg_queue); | |
1298 | if (txq_id < 0) { | |
1299 | ret = txq_id; | |
1300 | spin_unlock_bh(&mvm->queue_info_lock); | |
1301 | IWL_ERR(mvm, "Failed to allocate agg queue\n"); | |
1302 | goto release_locks; | |
1303 | } | |
1304 | mvm->queue_info[txq_id].setup_reserved = true; | |
1305 | spin_unlock_bh(&mvm->queue_info_lock); | |
8ca151b5 | 1306 | |
8ca151b5 | 1307 | tid_data = &mvmsta->tid_data[tid]; |
9a886586 | 1308 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1309 | tid_data->txq_id = txq_id; |
1310 | *ssn = tid_data->ssn; | |
1311 | ||
1312 | IWL_DEBUG_TX_QUEUES(mvm, | |
1313 | "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", | |
1314 | mvmsta->sta_id, tid, txq_id, tid_data->ssn, | |
1315 | tid_data->next_reclaimed); | |
1316 | ||
1317 | if (tid_data->ssn == tid_data->next_reclaimed) { | |
1318 | tid_data->state = IWL_AGG_STARTING; | |
1319 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1320 | } else { | |
1321 | tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
1322 | } | |
1323 | ||
4ecafae9 LK |
1324 | ret = 0; |
1325 | ||
1326 | release_locks: | |
8ca151b5 JB |
1327 | spin_unlock_bh(&mvmsta->lock); |
1328 | ||
4ecafae9 | 1329 | return ret; |
8ca151b5 JB |
1330 | } |
1331 | ||
1332 | int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
bb81bb68 EG |
1333 | struct ieee80211_sta *sta, u16 tid, u8 buf_size, |
1334 | bool amsdu) | |
8ca151b5 | 1335 | { |
5b577a90 | 1336 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 1337 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
5d42e7b2 EG |
1338 | unsigned int wdg_timeout = |
1339 | iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); | |
eea76c36 | 1340 | int queue, ret; |
8ca151b5 JB |
1341 | u16 ssn; |
1342 | ||
eea76c36 EG |
1343 | struct iwl_trans_txq_scd_cfg cfg = { |
1344 | .sta_id = mvmsta->sta_id, | |
1345 | .tid = tid, | |
1346 | .frame_limit = buf_size, | |
1347 | .aggregate = true, | |
1348 | }; | |
1349 | ||
efed6640 ES |
1350 | BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) |
1351 | != IWL_MAX_TID_COUNT); | |
1352 | ||
8ca151b5 JB |
1353 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); |
1354 | ||
1355 | spin_lock_bh(&mvmsta->lock); | |
1356 | ssn = tid_data->ssn; | |
1357 | queue = tid_data->txq_id; | |
1358 | tid_data->state = IWL_AGG_ON; | |
efed6640 | 1359 | mvmsta->agg_tids |= BIT(tid); |
8ca151b5 | 1360 | tid_data->ssn = 0xffff; |
bb81bb68 | 1361 | tid_data->amsdu_in_ampdu_allowed = amsdu; |
8ca151b5 JB |
1362 | spin_unlock_bh(&mvmsta->lock); |
1363 | ||
eea76c36 | 1364 | cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; |
8ca151b5 | 1365 | |
eea76c36 EG |
1366 | iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[tid_to_mac80211_ac[tid]], |
1367 | ssn, &cfg, wdg_timeout); | |
fa7878e7 | 1368 | |
8ca151b5 JB |
1369 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); |
1370 | if (ret) | |
1371 | return -EIO; | |
1372 | ||
4ecafae9 LK |
1373 | /* No need to mark as reserved */ |
1374 | spin_lock_bh(&mvm->queue_info_lock); | |
1375 | mvm->queue_info[queue].setup_reserved = false; | |
1376 | spin_unlock_bh(&mvm->queue_info_lock); | |
1377 | ||
8ca151b5 JB |
1378 | /* |
1379 | * Even though in theory the peer could have different | |
1380 | * aggregation reorder buffer sizes for different sessions, | |
1381 | * our ucode doesn't allow for that and has a global limit | |
1382 | * for each station. Therefore, use the minimum of all the | |
1383 | * aggregation sessions and our default value. | |
1384 | */ | |
1385 | mvmsta->max_agg_bufsize = | |
1386 | min(mvmsta->max_agg_bufsize, buf_size); | |
1387 | mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; | |
1388 | ||
9ee718aa EL |
1389 | IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", |
1390 | sta->addr, tid); | |
1391 | ||
9e680946 | 1392 | return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); |
8ca151b5 JB |
1393 | } |
1394 | ||
1395 | int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1396 | struct ieee80211_sta *sta, u16 tid) | |
1397 | { | |
5b577a90 | 1398 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1399 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1400 | u16 txq_id; | |
1401 | int err; | |
1402 | ||
f9aa8dd3 EG |
1403 | |
1404 | /* | |
1405 | * If mac80211 is cleaning its state, then say that we finished since | |
1406 | * our state has been cleared anyway. | |
1407 | */ | |
1408 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
1409 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1410 | return 0; | |
1411 | } | |
1412 | ||
8ca151b5 JB |
1413 | spin_lock_bh(&mvmsta->lock); |
1414 | ||
1415 | txq_id = tid_data->txq_id; | |
1416 | ||
1417 | IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", | |
1418 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
1419 | ||
efed6640 ES |
1420 | mvmsta->agg_tids &= ~BIT(tid); |
1421 | ||
4ecafae9 LK |
1422 | /* No need to mark as reserved anymore */ |
1423 | spin_lock_bh(&mvm->queue_info_lock); | |
1424 | mvm->queue_info[txq_id].setup_reserved = false; | |
1425 | spin_unlock_bh(&mvm->queue_info_lock); | |
1426 | ||
8ca151b5 JB |
1427 | switch (tid_data->state) { |
1428 | case IWL_AGG_ON: | |
9a886586 | 1429 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1430 | |
1431 | IWL_DEBUG_TX_QUEUES(mvm, | |
1432 | "ssn = %d, next_recl = %d\n", | |
1433 | tid_data->ssn, tid_data->next_reclaimed); | |
1434 | ||
1435 | /* There are still packets for this RA / TID in the HW */ | |
1436 | if (tid_data->ssn != tid_data->next_reclaimed) { | |
1437 | tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; | |
1438 | err = 0; | |
1439 | break; | |
1440 | } | |
1441 | ||
1442 | tid_data->ssn = 0xffff; | |
f7f89e7b | 1443 | tid_data->state = IWL_AGG_OFF; |
f7f89e7b JB |
1444 | spin_unlock_bh(&mvmsta->lock); |
1445 | ||
1446 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1447 | ||
1448 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); | |
1449 | ||
4ecafae9 LK |
1450 | iwl_mvm_disable_txq(mvm, txq_id, |
1451 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1452 | 0); | |
f7f89e7b | 1453 | return 0; |
8ca151b5 JB |
1454 | case IWL_AGG_STARTING: |
1455 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
1456 | /* | |
1457 | * The agg session has been stopped before it was set up. This | |
1458 | * can happen when the AddBA timer times out for example. | |
1459 | */ | |
1460 | ||
1461 | /* No barriers since we are under mutex */ | |
1462 | lockdep_assert_held(&mvm->mutex); | |
8ca151b5 JB |
1463 | |
1464 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1465 | tid_data->state = IWL_AGG_OFF; | |
1466 | err = 0; | |
1467 | break; | |
1468 | default: | |
1469 | IWL_ERR(mvm, | |
1470 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
1471 | mvmsta->sta_id, tid, tid_data->state); | |
1472 | IWL_ERR(mvm, | |
1473 | "\ttid_data->txq_id = %d\n", tid_data->txq_id); | |
1474 | err = -EINVAL; | |
1475 | } | |
1476 | ||
1477 | spin_unlock_bh(&mvmsta->lock); | |
1478 | ||
1479 | return err; | |
1480 | } | |
1481 | ||
e3d9e7ce EG |
1482 | int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1483 | struct ieee80211_sta *sta, u16 tid) | |
1484 | { | |
5b577a90 | 1485 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
e3d9e7ce EG |
1486 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1487 | u16 txq_id; | |
b6658ff8 | 1488 | enum iwl_mvm_agg_state old_state; |
e3d9e7ce EG |
1489 | |
1490 | /* | |
1491 | * First set the agg state to OFF to avoid calling | |
1492 | * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. | |
1493 | */ | |
1494 | spin_lock_bh(&mvmsta->lock); | |
1495 | txq_id = tid_data->txq_id; | |
1496 | IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", | |
1497 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
b6658ff8 | 1498 | old_state = tid_data->state; |
e3d9e7ce | 1499 | tid_data->state = IWL_AGG_OFF; |
efed6640 | 1500 | mvmsta->agg_tids &= ~BIT(tid); |
e3d9e7ce EG |
1501 | spin_unlock_bh(&mvmsta->lock); |
1502 | ||
4ecafae9 LK |
1503 | /* No need to mark as reserved */ |
1504 | spin_lock_bh(&mvm->queue_info_lock); | |
1505 | mvm->queue_info[txq_id].setup_reserved = false; | |
1506 | spin_unlock_bh(&mvm->queue_info_lock); | |
1507 | ||
b6658ff8 | 1508 | if (old_state >= IWL_AGG_ON) { |
fe92e32a | 1509 | iwl_mvm_drain_sta(mvm, mvmsta, true); |
5888a40c | 1510 | if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) |
b6658ff8 | 1511 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); |
fe92e32a EG |
1512 | iwl_trans_wait_tx_queue_empty(mvm->trans, |
1513 | mvmsta->tfd_queue_msk); | |
1514 | iwl_mvm_drain_sta(mvm, mvmsta, false); | |
b6658ff8 | 1515 | |
f7f89e7b JB |
1516 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); |
1517 | ||
4ecafae9 LK |
1518 | iwl_mvm_disable_txq(mvm, tid_data->txq_id, |
1519 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1520 | 0); | |
b6658ff8 | 1521 | } |
e3d9e7ce | 1522 | |
e3d9e7ce EG |
1523 | return 0; |
1524 | } | |
1525 | ||
8ca151b5 JB |
1526 | static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) |
1527 | { | |
2dc2a15e | 1528 | int i, max = -1, max_offs = -1; |
8ca151b5 JB |
1529 | |
1530 | lockdep_assert_held(&mvm->mutex); | |
1531 | ||
2dc2a15e JB |
1532 | /* Pick the unused key offset with the highest 'deleted' |
1533 | * counter. Every time a key is deleted, all the counters | |
1534 | * are incremented and the one that was just deleted is | |
1535 | * reset to zero. Thus, the highest counter is the one | |
1536 | * that was deleted longest ago. Pick that one. | |
1537 | */ | |
1538 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1539 | if (test_bit(i, mvm->fw_key_table)) | |
1540 | continue; | |
1541 | if (mvm->fw_key_deleted[i] > max) { | |
1542 | max = mvm->fw_key_deleted[i]; | |
1543 | max_offs = i; | |
1544 | } | |
1545 | } | |
8ca151b5 | 1546 | |
2dc2a15e | 1547 | if (max_offs < 0) |
8ca151b5 JB |
1548 | return STA_KEY_IDX_INVALID; |
1549 | ||
2dc2a15e | 1550 | return max_offs; |
8ca151b5 JB |
1551 | } |
1552 | ||
5f7a1847 JB |
1553 | static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, |
1554 | struct ieee80211_vif *vif, | |
1555 | struct ieee80211_sta *sta) | |
8ca151b5 | 1556 | { |
5b530e95 | 1557 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 | 1558 | |
5f7a1847 JB |
1559 | if (sta) |
1560 | return iwl_mvm_sta_from_mac80211(sta); | |
8ca151b5 JB |
1561 | |
1562 | /* | |
1563 | * The device expects GTKs for station interfaces to be | |
1564 | * installed as GTKs for the AP station. If we have no | |
1565 | * station ID, then use AP's station ID. | |
1566 | */ | |
1567 | if (vif->type == NL80211_IFTYPE_STATION && | |
9513c5e1 AA |
1568 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { |
1569 | u8 sta_id = mvmvif->ap_sta_id; | |
1570 | ||
45854360 JB |
1571 | sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], |
1572 | lockdep_is_held(&mvm->mutex)); | |
9513c5e1 AA |
1573 | /* |
1574 | * It is possible that the 'sta' parameter is NULL, | |
1575 | * for example when a GTK is removed - the sta_id will then | |
1576 | * be the AP ID, and no station was passed by mac80211. | |
1577 | */ | |
1578 | if (IS_ERR_OR_NULL(sta)) | |
5f7a1847 | 1579 | return NULL; |
9513c5e1 | 1580 | |
5f7a1847 | 1581 | return iwl_mvm_sta_from_mac80211(sta); |
9513c5e1 | 1582 | } |
8ca151b5 | 1583 | |
5f7a1847 | 1584 | return NULL; |
8ca151b5 JB |
1585 | } |
1586 | ||
1587 | static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, | |
1588 | struct iwl_mvm_sta *mvm_sta, | |
ba3943b0 | 1589 | struct ieee80211_key_conf *keyconf, bool mcast, |
d6ee54a9 LC |
1590 | u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, |
1591 | u8 key_offset) | |
8ca151b5 | 1592 | { |
5a258aae | 1593 | struct iwl_mvm_add_sta_key_cmd cmd = {}; |
f9dc0004 | 1594 | __le16 key_flags; |
79920749 JB |
1595 | int ret; |
1596 | u32 status; | |
8ca151b5 JB |
1597 | u16 keyidx; |
1598 | int i; | |
2f6319d1 | 1599 | u8 sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1600 | |
1601 | keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1602 | STA_KEY_FLG_KEYID_MSK; | |
1603 | key_flags = cpu_to_le16(keyidx); | |
1604 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); | |
1605 | ||
1606 | switch (keyconf->cipher) { | |
1607 | case WLAN_CIPHER_SUITE_TKIP: | |
1608 | key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); | |
5a258aae | 1609 | cmd.tkip_rx_tsc_byte2 = tkip_iv32; |
8ca151b5 | 1610 | for (i = 0; i < 5; i++) |
5a258aae MS |
1611 | cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); |
1612 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1613 | break; |
1614 | case WLAN_CIPHER_SUITE_CCMP: | |
1615 | key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); | |
5a258aae | 1616 | memcpy(cmd.key, keyconf->key, keyconf->keylen); |
8ca151b5 | 1617 | break; |
ba3943b0 JB |
1618 | case WLAN_CIPHER_SUITE_WEP104: |
1619 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); | |
aa0cb08b | 1620 | /* fall through */ |
ba3943b0 JB |
1621 | case WLAN_CIPHER_SUITE_WEP40: |
1622 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); | |
1623 | memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); | |
1624 | break; | |
8ca151b5 | 1625 | default: |
e36e5433 MS |
1626 | key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); |
1627 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1628 | } |
1629 | ||
ba3943b0 | 1630 | if (mcast) |
8ca151b5 JB |
1631 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1632 | ||
d6ee54a9 | 1633 | cmd.key_offset = key_offset; |
5a258aae | 1634 | cmd.key_flags = key_flags; |
8ca151b5 JB |
1635 | cmd.sta_id = sta_id; |
1636 | ||
1637 | status = ADD_STA_SUCCESS; | |
a1022927 | 1638 | if (cmd_flags & CMD_ASYNC) |
f9dc0004 EG |
1639 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, |
1640 | sizeof(cmd), &cmd); | |
a1022927 EG |
1641 | else |
1642 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1643 | &cmd, &status); | |
8ca151b5 JB |
1644 | |
1645 | switch (status) { | |
1646 | case ADD_STA_SUCCESS: | |
1647 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); | |
1648 | break; | |
1649 | default: | |
1650 | ret = -EIO; | |
1651 | IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); | |
1652 | break; | |
1653 | } | |
1654 | ||
1655 | return ret; | |
1656 | } | |
1657 | ||
1658 | static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, | |
1659 | struct ieee80211_key_conf *keyconf, | |
1660 | u8 sta_id, bool remove_key) | |
1661 | { | |
1662 | struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; | |
1663 | ||
1664 | /* verify the key details match the required command's expectations */ | |
1665 | if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || | |
1666 | (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || | |
1667 | (keyconf->keyidx != 4 && keyconf->keyidx != 5))) | |
1668 | return -EINVAL; | |
1669 | ||
1670 | igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); | |
1671 | igtk_cmd.sta_id = cpu_to_le32(sta_id); | |
1672 | ||
1673 | if (remove_key) { | |
1674 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); | |
1675 | } else { | |
1676 | struct ieee80211_key_seq seq; | |
1677 | const u8 *pn; | |
1678 | ||
1679 | memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1680 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); |
1681 | pn = seq.aes_cmac.pn; | |
1682 | igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | | |
1683 | ((u64) pn[4] << 8) | | |
1684 | ((u64) pn[3] << 16) | | |
1685 | ((u64) pn[2] << 24) | | |
1686 | ((u64) pn[1] << 32) | | |
1687 | ((u64) pn[0] << 40)); | |
1688 | } | |
1689 | ||
1690 | IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", | |
1691 | remove_key ? "removing" : "installing", | |
1692 | igtk_cmd.sta_id); | |
1693 | ||
a1022927 | 1694 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
8ca151b5 JB |
1695 | sizeof(igtk_cmd), &igtk_cmd); |
1696 | } | |
1697 | ||
1698 | ||
1699 | static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, | |
1700 | struct ieee80211_vif *vif, | |
1701 | struct ieee80211_sta *sta) | |
1702 | { | |
5b530e95 | 1703 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1704 | |
1705 | if (sta) | |
1706 | return sta->addr; | |
1707 | ||
1708 | if (vif->type == NL80211_IFTYPE_STATION && | |
1709 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { | |
1710 | u8 sta_id = mvmvif->ap_sta_id; | |
1711 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1712 | lockdep_is_held(&mvm->mutex)); | |
1713 | return sta->addr; | |
1714 | } | |
1715 | ||
1716 | ||
1717 | return NULL; | |
1718 | } | |
1719 | ||
2f6319d1 JB |
1720 | static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1721 | struct ieee80211_vif *vif, | |
1722 | struct ieee80211_sta *sta, | |
ba3943b0 | 1723 | struct ieee80211_key_conf *keyconf, |
d6ee54a9 | 1724 | u8 key_offset, |
ba3943b0 | 1725 | bool mcast) |
2f6319d1 JB |
1726 | { |
1727 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1728 | int ret; | |
1729 | const u8 *addr; | |
1730 | struct ieee80211_key_seq seq; | |
1731 | u16 p1k[5]; | |
1732 | ||
1733 | switch (keyconf->cipher) { | |
1734 | case WLAN_CIPHER_SUITE_TKIP: | |
1735 | addr = iwl_mvm_get_mac_addr(mvm, vif, sta); | |
1736 | /* get phase 1 key from mac80211 */ | |
1737 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1738 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
ba3943b0 | 1739 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1740 | seq.tkip.iv32, p1k, 0, key_offset); |
2f6319d1 JB |
1741 | break; |
1742 | case WLAN_CIPHER_SUITE_CCMP: | |
ba3943b0 JB |
1743 | case WLAN_CIPHER_SUITE_WEP40: |
1744 | case WLAN_CIPHER_SUITE_WEP104: | |
1745 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, | |
d6ee54a9 | 1746 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
1747 | break; |
1748 | default: | |
ba3943b0 | 1749 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1750 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
1751 | } |
1752 | ||
1753 | return ret; | |
1754 | } | |
1755 | ||
1756 | static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, | |
ba3943b0 JB |
1757 | struct ieee80211_key_conf *keyconf, |
1758 | bool mcast) | |
2f6319d1 JB |
1759 | { |
1760 | struct iwl_mvm_add_sta_key_cmd cmd = {}; | |
1761 | __le16 key_flags; | |
1762 | int ret; | |
1763 | u32 status; | |
1764 | ||
1765 | key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1766 | STA_KEY_FLG_KEYID_MSK); | |
1767 | key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); | |
1768 | key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); | |
1769 | ||
ba3943b0 | 1770 | if (mcast) |
2f6319d1 JB |
1771 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1772 | ||
1773 | cmd.key_flags = key_flags; | |
1774 | cmd.key_offset = keyconf->hw_key_idx; | |
1775 | cmd.sta_id = sta_id; | |
1776 | ||
1777 | status = ADD_STA_SUCCESS; | |
1778 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1779 | &cmd, &status); | |
1780 | ||
1781 | switch (status) { | |
1782 | case ADD_STA_SUCCESS: | |
1783 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); | |
1784 | break; | |
1785 | default: | |
1786 | ret = -EIO; | |
1787 | IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); | |
1788 | break; | |
1789 | } | |
1790 | ||
1791 | return ret; | |
1792 | } | |
1793 | ||
8ca151b5 JB |
1794 | int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1795 | struct ieee80211_vif *vif, | |
1796 | struct ieee80211_sta *sta, | |
1797 | struct ieee80211_key_conf *keyconf, | |
d6ee54a9 | 1798 | u8 key_offset) |
8ca151b5 | 1799 | { |
ba3943b0 | 1800 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 | 1801 | struct iwl_mvm_sta *mvm_sta; |
2f6319d1 | 1802 | u8 sta_id; |
8ca151b5 | 1803 | int ret; |
11828dbc | 1804 | static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; |
8ca151b5 JB |
1805 | |
1806 | lockdep_assert_held(&mvm->mutex); | |
1807 | ||
1808 | /* Get the station id from the mvm local station table */ | |
5f7a1847 JB |
1809 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
1810 | if (!mvm_sta) { | |
1811 | IWL_ERR(mvm, "Failed to find station\n"); | |
8ca151b5 JB |
1812 | return -EINVAL; |
1813 | } | |
5f7a1847 | 1814 | sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1815 | |
1816 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { | |
1817 | ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); | |
1818 | goto end; | |
1819 | } | |
1820 | ||
1821 | /* | |
1822 | * It is possible that the 'sta' parameter is NULL, and thus | |
1823 | * there is a need to retrieve the sta from the local station table. | |
1824 | */ | |
1825 | if (!sta) { | |
1826 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1827 | lockdep_is_held(&mvm->mutex)); | |
1828 | if (IS_ERR_OR_NULL(sta)) { | |
1829 | IWL_ERR(mvm, "Invalid station id\n"); | |
1830 | return -EINVAL; | |
1831 | } | |
1832 | } | |
1833 | ||
2f6319d1 | 1834 | if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
8ca151b5 JB |
1835 | return -EINVAL; |
1836 | ||
d6ee54a9 LC |
1837 | /* If the key_offset is not pre-assigned, we need to find a |
1838 | * new offset to use. In normal cases, the offset is not | |
1839 | * pre-assigned, but during HW_RESTART we want to reuse the | |
1840 | * same indices, so we pass them when this function is called. | |
1841 | * | |
1842 | * In D3 entry, we need to hardcoded the indices (because the | |
1843 | * firmware hardcodes the PTK offset to 0). In this case, we | |
1844 | * need to make sure we don't overwrite the hw_key_idx in the | |
1845 | * keyconf structure, because otherwise we cannot configure | |
1846 | * the original ones back when resuming. | |
1847 | */ | |
1848 | if (key_offset == STA_KEY_IDX_INVALID) { | |
1849 | key_offset = iwl_mvm_set_fw_key_idx(mvm); | |
1850 | if (key_offset == STA_KEY_IDX_INVALID) | |
8ca151b5 | 1851 | return -ENOSPC; |
d6ee54a9 | 1852 | keyconf->hw_key_idx = key_offset; |
8ca151b5 JB |
1853 | } |
1854 | ||
d6ee54a9 | 1855 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); |
9c3deeb5 | 1856 | if (ret) |
ba3943b0 | 1857 | goto end; |
ba3943b0 JB |
1858 | |
1859 | /* | |
1860 | * For WEP, the same key is used for multicast and unicast. Upload it | |
1861 | * again, using the same key offset, and now pointing the other one | |
1862 | * to the same key slot (offset). | |
1863 | * If this fails, remove the original as well. | |
1864 | */ | |
1865 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1866 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { | |
d6ee54a9 LC |
1867 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, |
1868 | key_offset, !mcast); | |
ba3943b0 | 1869 | if (ret) { |
ba3943b0 | 1870 | __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
9c3deeb5 | 1871 | goto end; |
ba3943b0 JB |
1872 | } |
1873 | } | |
8ca151b5 | 1874 | |
9c3deeb5 LC |
1875 | __set_bit(key_offset, mvm->fw_key_table); |
1876 | ||
8ca151b5 JB |
1877 | end: |
1878 | IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
1879 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, | |
11828dbc | 1880 | sta ? sta->addr : zero_addr, ret); |
8ca151b5 JB |
1881 | return ret; |
1882 | } | |
1883 | ||
1884 | int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, | |
1885 | struct ieee80211_vif *vif, | |
1886 | struct ieee80211_sta *sta, | |
1887 | struct ieee80211_key_conf *keyconf) | |
1888 | { | |
ba3943b0 | 1889 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 JB |
1890 | struct iwl_mvm_sta *mvm_sta; |
1891 | u8 sta_id = IWL_MVM_STATION_COUNT; | |
2dc2a15e | 1892 | int ret, i; |
8ca151b5 JB |
1893 | |
1894 | lockdep_assert_held(&mvm->mutex); | |
1895 | ||
5f7a1847 JB |
1896 | /* Get the station from the mvm local station table */ |
1897 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); | |
8ca151b5 JB |
1898 | |
1899 | IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", | |
1900 | keyconf->keyidx, sta_id); | |
1901 | ||
1902 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) | |
1903 | return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); | |
1904 | ||
2f6319d1 | 1905 | if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { |
8ca151b5 JB |
1906 | IWL_ERR(mvm, "offset %d not used in fw key table.\n", |
1907 | keyconf->hw_key_idx); | |
1908 | return -ENOENT; | |
1909 | } | |
1910 | ||
2dc2a15e JB |
1911 | /* track which key was deleted last */ |
1912 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1913 | if (mvm->fw_key_deleted[i] < U8_MAX) | |
1914 | mvm->fw_key_deleted[i]++; | |
1915 | } | |
1916 | mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; | |
1917 | ||
5f7a1847 | 1918 | if (!mvm_sta) { |
8ca151b5 JB |
1919 | IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); |
1920 | return 0; | |
1921 | } | |
1922 | ||
5f7a1847 JB |
1923 | sta_id = mvm_sta->sta_id; |
1924 | ||
ba3943b0 JB |
1925 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
1926 | if (ret) | |
1927 | return ret; | |
1928 | ||
1929 | /* delete WEP key twice to get rid of (now useless) offset */ | |
1930 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1931 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) | |
1932 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); | |
1933 | ||
1934 | return ret; | |
8ca151b5 JB |
1935 | } |
1936 | ||
1937 | void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, | |
1938 | struct ieee80211_vif *vif, | |
1939 | struct ieee80211_key_conf *keyconf, | |
1940 | struct ieee80211_sta *sta, u32 iv32, | |
1941 | u16 *phase1key) | |
1942 | { | |
c3eb536a | 1943 | struct iwl_mvm_sta *mvm_sta; |
ba3943b0 | 1944 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 1945 | |
c3eb536a BL |
1946 | rcu_read_lock(); |
1947 | ||
5f7a1847 JB |
1948 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
1949 | if (WARN_ON_ONCE(!mvm_sta)) | |
45854360 | 1950 | goto unlock; |
ba3943b0 | 1951 | iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1952 | iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); |
45854360 JB |
1953 | |
1954 | unlock: | |
c3eb536a | 1955 | rcu_read_unlock(); |
8ca151b5 JB |
1956 | } |
1957 | ||
9cc40712 JB |
1958 | void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, |
1959 | struct ieee80211_sta *sta) | |
8ca151b5 | 1960 | { |
5b577a90 | 1961 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1962 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1963 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1964 | .sta_id = mvmsta->sta_id, |
5af01772 | 1965 | .station_flags_msk = cpu_to_le32(STA_FLG_PS), |
9cc40712 | 1966 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 JB |
1967 | }; |
1968 | int ret; | |
1969 | ||
854c5705 SS |
1970 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
1971 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
8ca151b5 JB |
1972 | if (ret) |
1973 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1974 | } | |
1975 | ||
9cc40712 JB |
1976 | void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, |
1977 | struct ieee80211_sta *sta, | |
8ca151b5 | 1978 | enum ieee80211_frame_release_type reason, |
3e56eadf JB |
1979 | u16 cnt, u16 tids, bool more_data, |
1980 | bool agg) | |
8ca151b5 | 1981 | { |
5b577a90 | 1982 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1983 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1984 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1985 | .sta_id = mvmsta->sta_id, |
8ca151b5 JB |
1986 | .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, |
1987 | .sleep_tx_count = cpu_to_le16(cnt), | |
9cc40712 | 1988 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 | 1989 | }; |
3e56eadf JB |
1990 | int tid, ret; |
1991 | unsigned long _tids = tids; | |
1992 | ||
1993 | /* convert TIDs to ACs - we don't support TSPEC so that's OK | |
1994 | * Note that this field is reserved and unused by firmware not | |
1995 | * supporting GO uAPSD, so it's safe to always do this. | |
1996 | */ | |
1997 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) | |
1998 | cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); | |
1999 | ||
2000 | /* If we're releasing frames from aggregation queues then check if the | |
2001 | * all queues combined that we're releasing frames from have | |
2002 | * - more frames than the service period, in which case more_data | |
2003 | * needs to be set | |
2004 | * - fewer than 'cnt' frames, in which case we need to adjust the | |
2005 | * firmware command (but do that unconditionally) | |
2006 | */ | |
2007 | if (agg) { | |
2008 | int remaining = cnt; | |
36be0eb6 | 2009 | int sleep_tx_count; |
3e56eadf JB |
2010 | |
2011 | spin_lock_bh(&mvmsta->lock); | |
2012 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { | |
2013 | struct iwl_mvm_tid_data *tid_data; | |
2014 | u16 n_queued; | |
2015 | ||
2016 | tid_data = &mvmsta->tid_data[tid]; | |
2017 | if (WARN(tid_data->state != IWL_AGG_ON && | |
2018 | tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, | |
2019 | "TID %d state is %d\n", | |
2020 | tid, tid_data->state)) { | |
2021 | spin_unlock_bh(&mvmsta->lock); | |
2022 | ieee80211_sta_eosp(sta); | |
2023 | return; | |
2024 | } | |
2025 | ||
2026 | n_queued = iwl_mvm_tid_queued(tid_data); | |
2027 | if (n_queued > remaining) { | |
2028 | more_data = true; | |
2029 | remaining = 0; | |
2030 | break; | |
2031 | } | |
2032 | remaining -= n_queued; | |
2033 | } | |
36be0eb6 EG |
2034 | sleep_tx_count = cnt - remaining; |
2035 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) | |
2036 | mvmsta->sleep_tx_count = sleep_tx_count; | |
3e56eadf JB |
2037 | spin_unlock_bh(&mvmsta->lock); |
2038 | ||
36be0eb6 | 2039 | cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); |
3e56eadf JB |
2040 | if (WARN_ON(cnt - remaining == 0)) { |
2041 | ieee80211_sta_eosp(sta); | |
2042 | return; | |
2043 | } | |
2044 | } | |
2045 | ||
2046 | /* Note: this is ignored by firmware not supporting GO uAPSD */ | |
2047 | if (more_data) | |
2048 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); | |
2049 | ||
2050 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { | |
2051 | mvmsta->next_status_eosp = true; | |
2052 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); | |
2053 | } else { | |
2054 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); | |
2055 | } | |
8ca151b5 | 2056 | |
156f92f2 EG |
2057 | /* block the Tx queues until the FW updated the sleep Tx count */ |
2058 | iwl_trans_block_txq_ptrs(mvm->trans, true); | |
2059 | ||
2060 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, | |
2061 | CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, | |
854c5705 | 2062 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); |
8ca151b5 JB |
2063 | if (ret) |
2064 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
2065 | } | |
3e56eadf | 2066 | |
0416841d JB |
2067 | void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, |
2068 | struct iwl_rx_cmd_buffer *rxb) | |
3e56eadf JB |
2069 | { |
2070 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
2071 | struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; | |
2072 | struct ieee80211_sta *sta; | |
2073 | u32 sta_id = le32_to_cpu(notif->sta_id); | |
2074 | ||
2075 | if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) | |
0416841d | 2076 | return; |
3e56eadf JB |
2077 | |
2078 | rcu_read_lock(); | |
2079 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
2080 | if (!IS_ERR_OR_NULL(sta)) | |
2081 | ieee80211_sta_eosp(sta); | |
2082 | rcu_read_unlock(); | |
3e56eadf | 2083 | } |
09b0ce1a AO |
2084 | |
2085 | void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, | |
2086 | struct iwl_mvm_sta *mvmsta, bool disable) | |
2087 | { | |
2088 | struct iwl_mvm_add_sta_cmd cmd = { | |
2089 | .add_modify = STA_MODE_MODIFY, | |
2090 | .sta_id = mvmsta->sta_id, | |
2091 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
2092 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
2093 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), | |
2094 | }; | |
2095 | int ret; | |
2096 | ||
854c5705 SS |
2097 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
2098 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
09b0ce1a AO |
2099 | if (ret) |
2100 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
2101 | } | |
003e5236 AO |
2102 | |
2103 | void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, | |
2104 | struct ieee80211_sta *sta, | |
2105 | bool disable) | |
2106 | { | |
2107 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
2108 | ||
2109 | spin_lock_bh(&mvm_sta->lock); | |
2110 | ||
2111 | if (mvm_sta->disable_tx == disable) { | |
2112 | spin_unlock_bh(&mvm_sta->lock); | |
2113 | return; | |
2114 | } | |
2115 | ||
2116 | mvm_sta->disable_tx = disable; | |
2117 | ||
2118 | /* | |
0d365ae5 SS |
2119 | * Tell mac80211 to start/stop queuing tx for this station, |
2120 | * but don't stop queuing if there are still pending frames | |
003e5236 AO |
2121 | * for this station. |
2122 | */ | |
2123 | if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) | |
2124 | ieee80211_sta_block_awake(mvm->hw, sta, disable); | |
2125 | ||
2126 | iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); | |
2127 | ||
2128 | spin_unlock_bh(&mvm_sta->lock); | |
2129 | } | |
2130 | ||
2131 | void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, | |
2132 | struct iwl_mvm_vif *mvmvif, | |
2133 | bool disable) | |
2134 | { | |
2135 | struct ieee80211_sta *sta; | |
2136 | struct iwl_mvm_sta *mvm_sta; | |
2137 | int i; | |
2138 | ||
2139 | lockdep_assert_held(&mvm->mutex); | |
2140 | ||
2141 | /* Block/unblock all the stations of the given mvmvif */ | |
2142 | for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { | |
2143 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], | |
2144 | lockdep_is_held(&mvm->mutex)); | |
2145 | if (IS_ERR_OR_NULL(sta)) | |
2146 | continue; | |
2147 | ||
2148 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
2149 | if (mvm_sta->mac_id_n_color != | |
2150 | FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) | |
2151 | continue; | |
2152 | ||
2153 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); | |
2154 | } | |
2155 | } | |
dc88b4ba LC |
2156 | |
2157 | void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
2158 | { | |
2159 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
2160 | struct iwl_mvm_sta *mvmsta; | |
2161 | ||
2162 | rcu_read_lock(); | |
2163 | ||
2164 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); | |
2165 | ||
2166 | if (!WARN_ON(!mvmsta)) | |
2167 | iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); | |
2168 | ||
2169 | rcu_read_unlock(); | |
2170 | } |