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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 | |
8ca151b5 JB |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of version 2 of the GNU General Public License as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
23 | * USA | |
24 | * | |
25 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 26 | * in the file called COPYING. |
8ca151b5 JB |
27 | * |
28 | * Contact Information: | |
29 | * Intel Linux Wireless <ilw@linux.intel.com> | |
30 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
31 | * | |
32 | * BSD LICENSE | |
33 | * | |
fa7878e7 AO |
34 | * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. |
35 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
8ca151b5 JB |
36 | * All rights reserved. |
37 | * | |
38 | * Redistribution and use in source and binary forms, with or without | |
39 | * modification, are permitted provided that the following conditions | |
40 | * are met: | |
41 | * | |
42 | * * Redistributions of source code must retain the above copyright | |
43 | * notice, this list of conditions and the following disclaimer. | |
44 | * * Redistributions in binary form must reproduce the above copyright | |
45 | * notice, this list of conditions and the following disclaimer in | |
46 | * the documentation and/or other materials provided with the | |
47 | * distribution. | |
48 | * * Neither the name Intel Corporation nor the names of its | |
49 | * contributors may be used to endorse or promote products derived | |
50 | * from this software without specific prior written permission. | |
51 | * | |
52 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
53 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
54 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
55 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
56 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
57 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
58 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
59 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
60 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
61 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
62 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
63 | * | |
64 | *****************************************************************************/ | |
65 | #include <net/mac80211.h> | |
66 | ||
67 | #include "mvm.h" | |
68 | #include "sta.h" | |
9ee718aa | 69 | #include "rs.h" |
8ca151b5 | 70 | |
b92e661b EP |
71 | static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, |
72 | enum nl80211_iftype iftype) | |
8ca151b5 JB |
73 | { |
74 | int sta_id; | |
b92e661b | 75 | u32 reserved_ids = 0; |
8ca151b5 | 76 | |
b92e661b | 77 | BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32); |
8ca151b5 JB |
78 | WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); |
79 | ||
80 | lockdep_assert_held(&mvm->mutex); | |
81 | ||
b92e661b EP |
82 | /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ |
83 | if (iftype != NL80211_IFTYPE_STATION) | |
84 | reserved_ids = BIT(0); | |
85 | ||
8ca151b5 | 86 | /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ |
b92e661b EP |
87 | for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++) { |
88 | if (BIT(sta_id) & reserved_ids) | |
89 | continue; | |
90 | ||
8ca151b5 JB |
91 | if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], |
92 | lockdep_is_held(&mvm->mutex))) | |
93 | return sta_id; | |
b92e661b | 94 | } |
8ca151b5 JB |
95 | return IWL_MVM_STATION_COUNT; |
96 | } | |
97 | ||
7a453973 JB |
98 | /* send station add/update command to firmware */ |
99 | int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
100 | bool update) | |
8ca151b5 | 101 | { |
9d8ce6af | 102 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
4b8265ab EG |
103 | struct iwl_mvm_add_sta_cmd add_sta_cmd = { |
104 | .sta_id = mvm_sta->sta_id, | |
105 | .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), | |
106 | .add_modify = update ? 1 : 0, | |
107 | .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | | |
108 | STA_FLG_MIMO_EN_MSK), | |
109 | }; | |
8ca151b5 JB |
110 | int ret; |
111 | u32 status; | |
112 | u32 agg_size = 0, mpdu_dens = 0; | |
113 | ||
7a453973 JB |
114 | if (!update) { |
115 | add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
116 | memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); | |
117 | } | |
5bc5aaad JB |
118 | |
119 | switch (sta->bandwidth) { | |
120 | case IEEE80211_STA_RX_BW_160: | |
121 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); | |
122 | /* fall through */ | |
123 | case IEEE80211_STA_RX_BW_80: | |
124 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); | |
125 | /* fall through */ | |
126 | case IEEE80211_STA_RX_BW_40: | |
127 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); | |
128 | /* fall through */ | |
129 | case IEEE80211_STA_RX_BW_20: | |
130 | if (sta->ht_cap.ht_supported) | |
131 | add_sta_cmd.station_flags |= | |
132 | cpu_to_le32(STA_FLG_FAT_EN_20MHZ); | |
133 | break; | |
134 | } | |
135 | ||
136 | switch (sta->rx_nss) { | |
137 | case 1: | |
138 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
139 | break; | |
140 | case 2: | |
141 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); | |
142 | break; | |
143 | case 3 ... 8: | |
144 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); | |
145 | break; | |
146 | } | |
147 | ||
148 | switch (sta->smps_mode) { | |
149 | case IEEE80211_SMPS_AUTOMATIC: | |
150 | case IEEE80211_SMPS_NUM_MODES: | |
151 | WARN_ON(1); | |
152 | break; | |
153 | case IEEE80211_SMPS_STATIC: | |
154 | /* override NSS */ | |
155 | add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); | |
156 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
157 | break; | |
158 | case IEEE80211_SMPS_DYNAMIC: | |
159 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); | |
160 | break; | |
161 | case IEEE80211_SMPS_OFF: | |
162 | /* nothing */ | |
163 | break; | |
164 | } | |
8ca151b5 JB |
165 | |
166 | if (sta->ht_cap.ht_supported) { | |
167 | add_sta_cmd.station_flags_msk |= | |
168 | cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | | |
169 | STA_FLG_AGG_MPDU_DENS_MSK); | |
170 | ||
171 | mpdu_dens = sta->ht_cap.ampdu_density; | |
172 | } | |
173 | ||
174 | if (sta->vht_cap.vht_supported) { | |
175 | agg_size = sta->vht_cap.cap & | |
176 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; | |
177 | agg_size >>= | |
178 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; | |
179 | } else if (sta->ht_cap.ht_supported) { | |
180 | agg_size = sta->ht_cap.ampdu_factor; | |
181 | } | |
182 | ||
183 | add_sta_cmd.station_flags |= | |
184 | cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); | |
185 | add_sta_cmd.station_flags |= | |
186 | cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); | |
187 | ||
188 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
189 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(add_sta_cmd), |
190 | &add_sta_cmd, &status); | |
8ca151b5 JB |
191 | if (ret) |
192 | return ret; | |
193 | ||
194 | switch (status) { | |
195 | case ADD_STA_SUCCESS: | |
196 | IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); | |
197 | break; | |
198 | default: | |
199 | ret = -EIO; | |
200 | IWL_ERR(mvm, "ADD_STA failed\n"); | |
201 | break; | |
202 | } | |
203 | ||
204 | return ret; | |
205 | } | |
206 | ||
a0f6bf2a AN |
207 | static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm, |
208 | struct ieee80211_sta *sta) | |
209 | { | |
210 | unsigned long used_hw_queues; | |
211 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
5d42e7b2 EG |
212 | unsigned int wdg_timeout = |
213 | iwl_mvm_get_wd_timeout(mvm, NULL, true, false); | |
a0f6bf2a AN |
214 | u32 ac; |
215 | ||
216 | lockdep_assert_held(&mvm->mutex); | |
217 | ||
218 | used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL); | |
219 | ||
220 | /* Find available queues, and allocate them to the ACs */ | |
221 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
222 | u8 queue = find_first_zero_bit(&used_hw_queues, | |
223 | mvm->first_agg_queue); | |
224 | ||
225 | if (queue >= mvm->first_agg_queue) { | |
226 | IWL_ERR(mvm, "Failed to allocate STA queue\n"); | |
227 | return -EBUSY; | |
228 | } | |
229 | ||
230 | __set_bit(queue, &used_hw_queues); | |
231 | mvmsta->hw_queue[ac] = queue; | |
232 | } | |
233 | ||
234 | /* Found a place for all queues - enable them */ | |
235 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
236 | iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac], | |
4cf677fd | 237 | iwl_mvm_ac_to_tx_fifo[ac], wdg_timeout); |
a0f6bf2a AN |
238 | mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]); |
239 | } | |
240 | ||
241 | return 0; | |
242 | } | |
243 | ||
244 | static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm, | |
245 | struct ieee80211_sta *sta) | |
246 | { | |
247 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
248 | unsigned long sta_msk; | |
249 | int i; | |
250 | ||
251 | lockdep_assert_held(&mvm->mutex); | |
252 | ||
253 | /* disable the TDLS STA-specific queues */ | |
254 | sta_msk = mvmsta->tfd_queue_msk; | |
a4ca3ed4 | 255 | for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE) |
0294d9ee | 256 | iwl_mvm_disable_txq(mvm, i, 0); |
a0f6bf2a AN |
257 | } |
258 | ||
8ca151b5 JB |
259 | int iwl_mvm_add_sta(struct iwl_mvm *mvm, |
260 | struct ieee80211_vif *vif, | |
261 | struct ieee80211_sta *sta) | |
262 | { | |
263 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 264 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
265 | int i, ret, sta_id; |
266 | ||
267 | lockdep_assert_held(&mvm->mutex); | |
268 | ||
269 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) | |
b92e661b EP |
270 | sta_id = iwl_mvm_find_free_sta_id(mvm, |
271 | ieee80211_vif_type_p2p(vif)); | |
8ca151b5 JB |
272 | else |
273 | sta_id = mvm_sta->sta_id; | |
274 | ||
36f4631c | 275 | if (sta_id == IWL_MVM_STATION_COUNT) |
8ca151b5 JB |
276 | return -ENOSPC; |
277 | ||
94939080 GG |
278 | if (vif->type == NL80211_IFTYPE_AP) { |
279 | mvmvif->ap_assoc_sta_count++; | |
280 | iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, FW_CTXT_ACTION_MODIFY); | |
281 | } | |
282 | ||
8ca151b5 JB |
283 | spin_lock_init(&mvm_sta->lock); |
284 | ||
285 | mvm_sta->sta_id = sta_id; | |
286 | mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, | |
287 | mvmvif->color); | |
288 | mvm_sta->vif = vif; | |
289 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
9ee718aa EL |
290 | mvm_sta->tx_protection = 0; |
291 | mvm_sta->tt_tx_protection = false; | |
8ca151b5 JB |
292 | |
293 | /* HW restart, don't assume the memory has been zeroed */ | |
e3d4bc8c | 294 | atomic_set(&mvm->pending_frames[sta_id], 0); |
8ca151b5 JB |
295 | mvm_sta->tid_disable_agg = 0; |
296 | mvm_sta->tfd_queue_msk = 0; | |
a0f6bf2a AN |
297 | |
298 | /* allocate new queues for a TDLS station */ | |
299 | if (sta->tdls) { | |
300 | ret = iwl_mvm_tdls_sta_init(mvm, sta); | |
301 | if (ret) | |
302 | return ret; | |
303 | } else { | |
304 | for (i = 0; i < IEEE80211_NUM_ACS; i++) | |
305 | if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) | |
306 | mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); | |
307 | } | |
8ca151b5 | 308 | |
6d9d32b8 JB |
309 | /* for HW restart - reset everything but the sequence number */ |
310 | for (i = 0; i < IWL_MAX_TID_COUNT; i++) { | |
311 | u16 seq = mvm_sta->tid_data[i].seq_number; | |
312 | memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); | |
313 | mvm_sta->tid_data[i].seq_number = seq; | |
314 | } | |
efed6640 | 315 | mvm_sta->agg_tids = 0; |
8ca151b5 | 316 | |
7a453973 | 317 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, false); |
8ca151b5 | 318 | if (ret) |
a0f6bf2a | 319 | goto err; |
8ca151b5 | 320 | |
9e848010 JB |
321 | if (vif->type == NL80211_IFTYPE_STATION) { |
322 | if (!sta->tdls) { | |
323 | WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); | |
324 | mvmvif->ap_sta_id = sta_id; | |
325 | } else { | |
326 | WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); | |
327 | } | |
328 | } | |
8ca151b5 JB |
329 | |
330 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); | |
331 | ||
332 | return 0; | |
a0f6bf2a AN |
333 | |
334 | err: | |
335 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
336 | return ret; | |
8ca151b5 JB |
337 | } |
338 | ||
7a453973 JB |
339 | int iwl_mvm_update_sta(struct iwl_mvm *mvm, |
340 | struct ieee80211_vif *vif, | |
341 | struct ieee80211_sta *sta) | |
342 | { | |
343 | return iwl_mvm_sta_send_to_fw(mvm, sta, true); | |
344 | } | |
345 | ||
8ca151b5 JB |
346 | int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, |
347 | bool drain) | |
348 | { | |
f9dc0004 | 349 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
350 | int ret; |
351 | u32 status; | |
352 | ||
353 | lockdep_assert_held(&mvm->mutex); | |
354 | ||
355 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
356 | cmd.sta_id = mvmsta->sta_id; | |
357 | cmd.add_modify = STA_MODE_MODIFY; | |
358 | cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; | |
359 | cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); | |
360 | ||
361 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
362 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
363 | &cmd, &status); | |
8ca151b5 JB |
364 | if (ret) |
365 | return ret; | |
366 | ||
367 | switch (status) { | |
368 | case ADD_STA_SUCCESS: | |
369 | IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", | |
370 | mvmsta->sta_id); | |
371 | break; | |
372 | default: | |
373 | ret = -EIO; | |
374 | IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", | |
375 | mvmsta->sta_id); | |
376 | break; | |
377 | } | |
378 | ||
379 | return ret; | |
380 | } | |
381 | ||
382 | /* | |
383 | * Remove a station from the FW table. Before sending the command to remove | |
384 | * the station validate that the station is indeed known to the driver (sanity | |
385 | * only). | |
386 | */ | |
387 | static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) | |
388 | { | |
389 | struct ieee80211_sta *sta; | |
390 | struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { | |
391 | .sta_id = sta_id, | |
392 | }; | |
393 | int ret; | |
394 | ||
395 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
396 | lockdep_is_held(&mvm->mutex)); | |
397 | ||
398 | /* Note: internal stations are marked as error values */ | |
399 | if (!sta) { | |
400 | IWL_ERR(mvm, "Invalid station id\n"); | |
401 | return -EINVAL; | |
402 | } | |
403 | ||
a1022927 | 404 | ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, |
8ca151b5 JB |
405 | sizeof(rm_sta_cmd), &rm_sta_cmd); |
406 | if (ret) { | |
407 | IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); | |
408 | return ret; | |
409 | } | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
414 | void iwl_mvm_sta_drained_wk(struct work_struct *wk) | |
415 | { | |
416 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); | |
417 | u8 sta_id; | |
418 | ||
419 | /* | |
420 | * The mutex is needed because of the SYNC cmd, but not only: if the | |
421 | * work would run concurrently with iwl_mvm_rm_sta, it would run before | |
422 | * iwl_mvm_rm_sta sets the station as busy, and exit. Then | |
423 | * iwl_mvm_rm_sta would set the station as busy, and nobody will clean | |
424 | * that later. | |
425 | */ | |
426 | mutex_lock(&mvm->mutex); | |
427 | ||
428 | for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { | |
429 | int ret; | |
430 | struct ieee80211_sta *sta = | |
431 | rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
432 | lockdep_is_held(&mvm->mutex)); | |
433 | ||
1ddbbb0c JB |
434 | /* |
435 | * This station is in use or RCU-removed; the latter happens in | |
436 | * managed mode, where mac80211 removes the station before we | |
437 | * can remove it from firmware (we can only do that after the | |
438 | * MAC is marked unassociated), and possibly while the deauth | |
439 | * frame to disconnect from the AP is still queued. Then, the | |
440 | * station pointer is -ENOENT when the last skb is reclaimed. | |
441 | */ | |
442 | if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) | |
8ca151b5 JB |
443 | continue; |
444 | ||
445 | if (PTR_ERR(sta) == -EINVAL) { | |
446 | IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", | |
447 | sta_id); | |
448 | continue; | |
449 | } | |
450 | ||
451 | if (!sta) { | |
452 | IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", | |
453 | sta_id); | |
454 | continue; | |
455 | } | |
456 | ||
457 | WARN_ON(PTR_ERR(sta) != -EBUSY); | |
458 | /* This station was removed and we waited until it got drained, | |
459 | * we can now proceed and remove it. | |
460 | */ | |
461 | ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
462 | if (ret) { | |
463 | IWL_ERR(mvm, | |
464 | "Couldn't remove sta %d after it was drained\n", | |
465 | sta_id); | |
466 | continue; | |
467 | } | |
c531c771 | 468 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 | 469 | clear_bit(sta_id, mvm->sta_drained); |
a0f6bf2a AN |
470 | |
471 | if (mvm->tfd_drained[sta_id]) { | |
472 | unsigned long i, msk = mvm->tfd_drained[sta_id]; | |
473 | ||
a4ca3ed4 | 474 | for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) |
0294d9ee | 475 | iwl_mvm_disable_txq(mvm, i, 0); |
a0f6bf2a AN |
476 | |
477 | mvm->tfd_drained[sta_id] = 0; | |
478 | IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", | |
479 | sta_id, msk); | |
480 | } | |
8ca151b5 JB |
481 | } |
482 | ||
483 | mutex_unlock(&mvm->mutex); | |
484 | } | |
485 | ||
486 | int iwl_mvm_rm_sta(struct iwl_mvm *mvm, | |
487 | struct ieee80211_vif *vif, | |
488 | struct ieee80211_sta *sta) | |
489 | { | |
490 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 491 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
492 | int ret; |
493 | ||
494 | lockdep_assert_held(&mvm->mutex); | |
495 | ||
496 | if (vif->type == NL80211_IFTYPE_STATION && | |
497 | mvmvif->ap_sta_id == mvm_sta->sta_id) { | |
fe92e32a EG |
498 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
499 | if (ret) | |
500 | return ret; | |
80d85655 EG |
501 | /* flush its queues here since we are freeing mvm_sta */ |
502 | ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, true); | |
fe92e32a EG |
503 | if (ret) |
504 | return ret; | |
505 | ret = iwl_trans_wait_tx_queue_empty(mvm->trans, | |
506 | mvm_sta->tfd_queue_msk); | |
507 | if (ret) | |
508 | return ret; | |
509 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); | |
80d85655 | 510 | |
8ca151b5 JB |
511 | /* if we are associated - we can't remove the AP STA now */ |
512 | if (vif->bss_conf.assoc) | |
513 | return ret; | |
514 | ||
515 | /* unassoc - go ahead - remove the AP STA now */ | |
516 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
37577fe2 EP |
517 | |
518 | /* clear d0i3_ap_sta_id if no longer relevant */ | |
519 | if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) | |
520 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
8ca151b5 JB |
521 | } |
522 | ||
1d3c3f63 AN |
523 | /* |
524 | * This shouldn't happen - the TDLS channel switch should be canceled | |
525 | * before the STA is removed. | |
526 | */ | |
527 | if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { | |
528 | mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; | |
529 | cancel_delayed_work(&mvm->tdls_cs.dwork); | |
530 | } | |
531 | ||
e3d4bc8c EG |
532 | /* |
533 | * Make sure that the tx response code sees the station as -EBUSY and | |
534 | * calls the drain worker. | |
535 | */ | |
536 | spin_lock_bh(&mvm_sta->lock); | |
8ca151b5 JB |
537 | /* |
538 | * There are frames pending on the AC queues for this station. | |
539 | * We need to wait until all the frames are drained... | |
540 | */ | |
e3d4bc8c | 541 | if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { |
8ca151b5 JB |
542 | rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], |
543 | ERR_PTR(-EBUSY)); | |
e3d4bc8c | 544 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
545 | |
546 | /* disable TDLS sta queues on drain complete */ | |
547 | if (sta->tdls) { | |
548 | mvm->tfd_drained[mvm_sta->sta_id] = | |
549 | mvm_sta->tfd_queue_msk; | |
550 | IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", | |
551 | mvm_sta->sta_id); | |
552 | } | |
553 | ||
e3d4bc8c | 554 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
8ca151b5 | 555 | } else { |
e3d4bc8c | 556 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
557 | |
558 | if (sta->tdls) | |
559 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
560 | ||
8ca151b5 | 561 | ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); |
c531c771 | 562 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); |
8ca151b5 JB |
563 | } |
564 | ||
565 | return ret; | |
566 | } | |
567 | ||
568 | int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, | |
569 | struct ieee80211_vif *vif, | |
570 | u8 sta_id) | |
571 | { | |
572 | int ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
573 | ||
574 | lockdep_assert_held(&mvm->mutex); | |
575 | ||
c531c771 | 576 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 JB |
577 | return ret; |
578 | } | |
579 | ||
712b24ad JB |
580 | static int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, |
581 | struct iwl_mvm_int_sta *sta, | |
582 | u32 qmask, enum nl80211_iftype iftype) | |
8ca151b5 JB |
583 | { |
584 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
b92e661b | 585 | sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); |
8ca151b5 JB |
586 | if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) |
587 | return -ENOSPC; | |
588 | } | |
589 | ||
590 | sta->tfd_queue_msk = qmask; | |
591 | ||
592 | /* put a non-NULL value so iterating over the stations won't stop */ | |
593 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); | |
594 | return 0; | |
595 | } | |
596 | ||
712b24ad JB |
597 | static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, |
598 | struct iwl_mvm_int_sta *sta) | |
8ca151b5 | 599 | { |
c531c771 | 600 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); |
8ca151b5 JB |
601 | memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); |
602 | sta->sta_id = IWL_MVM_STATION_COUNT; | |
603 | } | |
604 | ||
605 | static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, | |
606 | struct iwl_mvm_int_sta *sta, | |
607 | const u8 *addr, | |
608 | u16 mac_id, u16 color) | |
609 | { | |
f9dc0004 | 610 | struct iwl_mvm_add_sta_cmd cmd; |
8ca151b5 JB |
611 | int ret; |
612 | u32 status; | |
613 | ||
614 | lockdep_assert_held(&mvm->mutex); | |
615 | ||
f9dc0004 | 616 | memset(&cmd, 0, sizeof(cmd)); |
8ca151b5 JB |
617 | cmd.sta_id = sta->sta_id; |
618 | cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, | |
619 | color)); | |
620 | ||
621 | cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); | |
622 | ||
623 | if (addr) | |
624 | memcpy(cmd.addr, addr, ETH_ALEN); | |
625 | ||
f9dc0004 EG |
626 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
627 | &cmd, &status); | |
8ca151b5 JB |
628 | if (ret) |
629 | return ret; | |
630 | ||
631 | switch (status) { | |
632 | case ADD_STA_SUCCESS: | |
633 | IWL_DEBUG_INFO(mvm, "Internal station added.\n"); | |
634 | return 0; | |
635 | default: | |
636 | ret = -EIO; | |
637 | IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", | |
638 | status); | |
639 | break; | |
640 | } | |
641 | return ret; | |
642 | } | |
643 | ||
644 | int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) | |
645 | { | |
4cf677fd EG |
646 | unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? |
647 | mvm->cfg->base_params->wd_timeout : | |
648 | IWL_WATCHDOG_DISABLED; | |
8ca151b5 JB |
649 | int ret; |
650 | ||
651 | lockdep_assert_held(&mvm->mutex); | |
652 | ||
7da91b0e | 653 | /* Map Aux queue to fifo - needs to happen before adding Aux station */ |
3edf8ff6 | 654 | iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, |
4cf677fd | 655 | IWL_MVM_TX_FIFO_MCAST, wdg_timeout); |
7da91b0e AM |
656 | |
657 | /* Allocate aux station and assign to it the aux queue */ | |
658 | ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), | |
b92e661b | 659 | NL80211_IFTYPE_UNSPECIFIED); |
8ca151b5 JB |
660 | if (ret) |
661 | return ret; | |
662 | ||
663 | ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, | |
664 | MAC_INDEX_AUX, 0); | |
665 | ||
666 | if (ret) | |
667 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
668 | return ret; | |
669 | } | |
670 | ||
712b24ad JB |
671 | void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) |
672 | { | |
673 | lockdep_assert_held(&mvm->mutex); | |
674 | ||
675 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
676 | } | |
677 | ||
8ca151b5 JB |
678 | /* |
679 | * Send the add station command for the vif's broadcast station. | |
680 | * Assumes that the station was already allocated. | |
681 | * | |
682 | * @mvm: the mvm component | |
683 | * @vif: the interface to which the broadcast station is added | |
684 | * @bsta: the broadcast station to add. | |
685 | */ | |
013290aa | 686 | int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
687 | { |
688 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 689 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
5023d966 | 690 | static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
a4243402 | 691 | const u8 *baddr = _baddr; |
8ca151b5 JB |
692 | |
693 | lockdep_assert_held(&mvm->mutex); | |
694 | ||
5023d966 JB |
695 | if (vif->type == NL80211_IFTYPE_ADHOC) |
696 | baddr = vif->bss_conf.bssid; | |
697 | ||
8ca151b5 JB |
698 | if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) |
699 | return -ENOSPC; | |
700 | ||
701 | return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, | |
702 | mvmvif->id, mvmvif->color); | |
703 | } | |
704 | ||
705 | /* Send the FW a request to remove the station from it's internal data | |
706 | * structures, but DO NOT remove the entry from the local data structures. */ | |
013290aa | 707 | int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 | 708 | { |
013290aa | 709 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
710 | int ret; |
711 | ||
712 | lockdep_assert_held(&mvm->mutex); | |
713 | ||
013290aa | 714 | ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); |
8ca151b5 JB |
715 | if (ret) |
716 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
717 | return ret; | |
718 | } | |
719 | ||
013290aa JB |
720 | int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
721 | { | |
722 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
723 | u32 qmask; | |
724 | ||
725 | lockdep_assert_held(&mvm->mutex); | |
726 | ||
d92b732e | 727 | qmask = iwl_mvm_mac_get_queues_mask(vif); |
013290aa JB |
728 | |
729 | /* | |
730 | * The firmware defines the TFD queue mask to only be relevant | |
731 | * for *unicast* queues, so the multicast (CAB) queue shouldn't | |
732 | * be included. | |
733 | */ | |
734 | if (vif->type == NL80211_IFTYPE_AP) | |
735 | qmask &= ~BIT(vif->cab_queue); | |
736 | ||
737 | return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, | |
738 | ieee80211_vif_type_p2p(vif)); | |
739 | } | |
740 | ||
8ca151b5 JB |
741 | /* Allocate a new station entry for the broadcast station to the given vif, |
742 | * and send it to the FW. | |
743 | * Note that each P2P mac should have its own broadcast station. | |
744 | * | |
745 | * @mvm: the mvm component | |
746 | * @vif: the interface to which the broadcast station is added | |
747 | * @bsta: the broadcast station to add. */ | |
013290aa | 748 | int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
749 | { |
750 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 751 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
8ca151b5 JB |
752 | int ret; |
753 | ||
754 | lockdep_assert_held(&mvm->mutex); | |
755 | ||
013290aa | 756 | ret = iwl_mvm_alloc_bcast_sta(mvm, vif); |
8ca151b5 JB |
757 | if (ret) |
758 | return ret; | |
759 | ||
013290aa | 760 | ret = iwl_mvm_send_add_bcast_sta(mvm, vif); |
8ca151b5 JB |
761 | |
762 | if (ret) | |
763 | iwl_mvm_dealloc_int_sta(mvm, bsta); | |
013290aa | 764 | |
8ca151b5 JB |
765 | return ret; |
766 | } | |
767 | ||
013290aa JB |
768 | void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
769 | { | |
770 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
771 | ||
772 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
773 | } | |
774 | ||
8ca151b5 JB |
775 | /* |
776 | * Send the FW a request to remove the station from it's internal data | |
777 | * structures, and in addition remove it from the local data structure. | |
778 | */ | |
013290aa | 779 | int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
780 | { |
781 | int ret; | |
782 | ||
783 | lockdep_assert_held(&mvm->mutex); | |
784 | ||
013290aa JB |
785 | ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); |
786 | ||
787 | iwl_mvm_dealloc_bcast_sta(mvm, vif); | |
8ca151b5 | 788 | |
8ca151b5 JB |
789 | return ret; |
790 | } | |
791 | ||
113a0447 EG |
792 | #define IWL_MAX_RX_BA_SESSIONS 16 |
793 | ||
8ca151b5 JB |
794 | int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
795 | int tid, u16 ssn, bool start) | |
796 | { | |
9d8ce6af | 797 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 798 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
799 | int ret; |
800 | u32 status; | |
801 | ||
802 | lockdep_assert_held(&mvm->mutex); | |
803 | ||
113a0447 EG |
804 | if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { |
805 | IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); | |
806 | return -ENOSPC; | |
807 | } | |
808 | ||
8ca151b5 JB |
809 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
810 | cmd.sta_id = mvm_sta->sta_id; | |
811 | cmd.add_modify = STA_MODE_MODIFY; | |
93a42667 EG |
812 | if (start) { |
813 | cmd.add_immediate_ba_tid = (u8) tid; | |
814 | cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
815 | } else { | |
816 | cmd.remove_immediate_ba_tid = (u8) tid; | |
817 | } | |
8ca151b5 JB |
818 | cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : |
819 | STA_MODIFY_REMOVE_BA_TID; | |
820 | ||
821 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
822 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
823 | &cmd, &status); | |
8ca151b5 JB |
824 | if (ret) |
825 | return ret; | |
826 | ||
827 | switch (status) { | |
828 | case ADD_STA_SUCCESS: | |
829 | IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", | |
830 | start ? "start" : "stopp"); | |
831 | break; | |
832 | case ADD_STA_IMMEDIATE_BA_FAILURE: | |
833 | IWL_WARN(mvm, "RX BA Session refused by fw\n"); | |
834 | ret = -ENOSPC; | |
835 | break; | |
836 | default: | |
837 | ret = -EIO; | |
838 | IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", | |
839 | start ? "start" : "stopp", status); | |
840 | break; | |
841 | } | |
842 | ||
113a0447 EG |
843 | if (!ret) { |
844 | if (start) | |
845 | mvm->rx_ba_sessions++; | |
846 | else if (mvm->rx_ba_sessions > 0) | |
847 | /* check that restart flow didn't zero the counter */ | |
848 | mvm->rx_ba_sessions--; | |
849 | } | |
850 | ||
8ca151b5 JB |
851 | return ret; |
852 | } | |
853 | ||
854 | static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
855 | int tid, u8 queue, bool start) | |
856 | { | |
9d8ce6af | 857 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 858 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
859 | int ret; |
860 | u32 status; | |
861 | ||
862 | lockdep_assert_held(&mvm->mutex); | |
863 | ||
864 | if (start) { | |
865 | mvm_sta->tfd_queue_msk |= BIT(queue); | |
866 | mvm_sta->tid_disable_agg &= ~BIT(tid); | |
867 | } else { | |
868 | mvm_sta->tfd_queue_msk &= ~BIT(queue); | |
869 | mvm_sta->tid_disable_agg |= BIT(tid); | |
870 | } | |
871 | ||
872 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); | |
873 | cmd.sta_id = mvm_sta->sta_id; | |
874 | cmd.add_modify = STA_MODE_MODIFY; | |
875 | cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; | |
876 | cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
877 | cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); | |
878 | ||
879 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
880 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
881 | &cmd, &status); | |
8ca151b5 JB |
882 | if (ret) |
883 | return ret; | |
884 | ||
885 | switch (status) { | |
886 | case ADD_STA_SUCCESS: | |
887 | break; | |
888 | default: | |
889 | ret = -EIO; | |
890 | IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", | |
891 | start ? "start" : "stopp", status); | |
892 | break; | |
893 | } | |
894 | ||
895 | return ret; | |
896 | } | |
897 | ||
b797e3fb | 898 | const u8 tid_to_mac80211_ac[] = { |
8ca151b5 JB |
899 | IEEE80211_AC_BE, |
900 | IEEE80211_AC_BK, | |
901 | IEEE80211_AC_BK, | |
902 | IEEE80211_AC_BE, | |
903 | IEEE80211_AC_VI, | |
904 | IEEE80211_AC_VI, | |
905 | IEEE80211_AC_VO, | |
906 | IEEE80211_AC_VO, | |
907 | }; | |
908 | ||
3e56eadf JB |
909 | static const u8 tid_to_ucode_ac[] = { |
910 | AC_BE, | |
911 | AC_BK, | |
912 | AC_BK, | |
913 | AC_BE, | |
914 | AC_VI, | |
915 | AC_VI, | |
916 | AC_VO, | |
917 | AC_VO, | |
918 | }; | |
919 | ||
8ca151b5 JB |
920 | int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
921 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) | |
922 | { | |
5b577a90 | 923 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
924 | struct iwl_mvm_tid_data *tid_data; |
925 | int txq_id; | |
926 | ||
927 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
928 | return -EINVAL; | |
929 | ||
930 | if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { | |
931 | IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", | |
932 | mvmsta->tid_data[tid].state); | |
933 | return -ENXIO; | |
934 | } | |
935 | ||
936 | lockdep_assert_held(&mvm->mutex); | |
937 | ||
19e737c9 EL |
938 | for (txq_id = mvm->first_agg_queue; |
939 | txq_id <= mvm->last_agg_queue; txq_id++) | |
8ca151b5 JB |
940 | if (mvm->queue_to_mac80211[txq_id] == |
941 | IWL_INVALID_MAC80211_QUEUE) | |
942 | break; | |
943 | ||
19e737c9 | 944 | if (txq_id > mvm->last_agg_queue) { |
8ca151b5 JB |
945 | IWL_ERR(mvm, "Failed to allocate agg queue\n"); |
946 | return -EIO; | |
947 | } | |
948 | ||
b2492501 AN |
949 | spin_lock_bh(&mvmsta->lock); |
950 | ||
951 | /* possible race condition - we entered D0i3 while starting agg */ | |
952 | if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { | |
953 | spin_unlock_bh(&mvmsta->lock); | |
954 | IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); | |
955 | return -EIO; | |
956 | } | |
957 | ||
8ca151b5 | 958 | /* the new tx queue is still connected to the same mac80211 queue */ |
3e56eadf | 959 | mvm->queue_to_mac80211[txq_id] = vif->hw_queue[tid_to_mac80211_ac[tid]]; |
8ca151b5 | 960 | |
8ca151b5 | 961 | tid_data = &mvmsta->tid_data[tid]; |
9a886586 | 962 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
963 | tid_data->txq_id = txq_id; |
964 | *ssn = tid_data->ssn; | |
965 | ||
966 | IWL_DEBUG_TX_QUEUES(mvm, | |
967 | "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", | |
968 | mvmsta->sta_id, tid, txq_id, tid_data->ssn, | |
969 | tid_data->next_reclaimed); | |
970 | ||
971 | if (tid_data->ssn == tid_data->next_reclaimed) { | |
972 | tid_data->state = IWL_AGG_STARTING; | |
973 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
974 | } else { | |
975 | tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
976 | } | |
977 | ||
978 | spin_unlock_bh(&mvmsta->lock); | |
979 | ||
980 | return 0; | |
981 | } | |
982 | ||
983 | int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
984 | struct ieee80211_sta *sta, u16 tid, u8 buf_size) | |
985 | { | |
5b577a90 | 986 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 987 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
5d42e7b2 EG |
988 | unsigned int wdg_timeout = |
989 | iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); | |
8ca151b5 JB |
990 | int queue, fifo, ret; |
991 | u16 ssn; | |
992 | ||
efed6640 ES |
993 | BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) |
994 | != IWL_MAX_TID_COUNT); | |
995 | ||
8ca151b5 JB |
996 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); |
997 | ||
998 | spin_lock_bh(&mvmsta->lock); | |
999 | ssn = tid_data->ssn; | |
1000 | queue = tid_data->txq_id; | |
1001 | tid_data->state = IWL_AGG_ON; | |
efed6640 | 1002 | mvmsta->agg_tids |= BIT(tid); |
8ca151b5 JB |
1003 | tid_data->ssn = 0xffff; |
1004 | spin_unlock_bh(&mvmsta->lock); | |
1005 | ||
3e56eadf | 1006 | fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; |
8ca151b5 | 1007 | |
fa7878e7 AO |
1008 | iwl_mvm_enable_agg_txq(mvm, queue, fifo, mvmsta->sta_id, tid, |
1009 | buf_size, ssn, wdg_timeout); | |
1010 | ||
8ca151b5 JB |
1011 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); |
1012 | if (ret) | |
1013 | return -EIO; | |
1014 | ||
8ca151b5 JB |
1015 | /* |
1016 | * Even though in theory the peer could have different | |
1017 | * aggregation reorder buffer sizes for different sessions, | |
1018 | * our ucode doesn't allow for that and has a global limit | |
1019 | * for each station. Therefore, use the minimum of all the | |
1020 | * aggregation sessions and our default value. | |
1021 | */ | |
1022 | mvmsta->max_agg_bufsize = | |
1023 | min(mvmsta->max_agg_bufsize, buf_size); | |
1024 | mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; | |
1025 | ||
9ee718aa EL |
1026 | IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", |
1027 | sta->addr, tid); | |
1028 | ||
9e680946 | 1029 | return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); |
8ca151b5 JB |
1030 | } |
1031 | ||
1032 | int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1033 | struct ieee80211_sta *sta, u16 tid) | |
1034 | { | |
5b577a90 | 1035 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1036 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1037 | u16 txq_id; | |
1038 | int err; | |
1039 | ||
f9aa8dd3 EG |
1040 | |
1041 | /* | |
1042 | * If mac80211 is cleaning its state, then say that we finished since | |
1043 | * our state has been cleared anyway. | |
1044 | */ | |
1045 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
1046 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1047 | return 0; | |
1048 | } | |
1049 | ||
8ca151b5 JB |
1050 | spin_lock_bh(&mvmsta->lock); |
1051 | ||
1052 | txq_id = tid_data->txq_id; | |
1053 | ||
1054 | IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", | |
1055 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
1056 | ||
efed6640 ES |
1057 | mvmsta->agg_tids &= ~BIT(tid); |
1058 | ||
8ca151b5 JB |
1059 | switch (tid_data->state) { |
1060 | case IWL_AGG_ON: | |
9a886586 | 1061 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1062 | |
1063 | IWL_DEBUG_TX_QUEUES(mvm, | |
1064 | "ssn = %d, next_recl = %d\n", | |
1065 | tid_data->ssn, tid_data->next_reclaimed); | |
1066 | ||
1067 | /* There are still packets for this RA / TID in the HW */ | |
1068 | if (tid_data->ssn != tid_data->next_reclaimed) { | |
1069 | tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; | |
1070 | err = 0; | |
1071 | break; | |
1072 | } | |
1073 | ||
1074 | tid_data->ssn = 0xffff; | |
f7f89e7b JB |
1075 | tid_data->state = IWL_AGG_OFF; |
1076 | mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE; | |
1077 | spin_unlock_bh(&mvmsta->lock); | |
1078 | ||
1079 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1080 | ||
1081 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); | |
1082 | ||
0294d9ee | 1083 | iwl_mvm_disable_txq(mvm, txq_id, 0); |
f7f89e7b | 1084 | return 0; |
8ca151b5 JB |
1085 | case IWL_AGG_STARTING: |
1086 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
1087 | /* | |
1088 | * The agg session has been stopped before it was set up. This | |
1089 | * can happen when the AddBA timer times out for example. | |
1090 | */ | |
1091 | ||
1092 | /* No barriers since we are under mutex */ | |
1093 | lockdep_assert_held(&mvm->mutex); | |
1094 | mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE; | |
1095 | ||
1096 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1097 | tid_data->state = IWL_AGG_OFF; | |
1098 | err = 0; | |
1099 | break; | |
1100 | default: | |
1101 | IWL_ERR(mvm, | |
1102 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
1103 | mvmsta->sta_id, tid, tid_data->state); | |
1104 | IWL_ERR(mvm, | |
1105 | "\ttid_data->txq_id = %d\n", tid_data->txq_id); | |
1106 | err = -EINVAL; | |
1107 | } | |
1108 | ||
1109 | spin_unlock_bh(&mvmsta->lock); | |
1110 | ||
1111 | return err; | |
1112 | } | |
1113 | ||
e3d9e7ce EG |
1114 | int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1115 | struct ieee80211_sta *sta, u16 tid) | |
1116 | { | |
5b577a90 | 1117 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
e3d9e7ce EG |
1118 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1119 | u16 txq_id; | |
b6658ff8 | 1120 | enum iwl_mvm_agg_state old_state; |
e3d9e7ce EG |
1121 | |
1122 | /* | |
1123 | * First set the agg state to OFF to avoid calling | |
1124 | * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. | |
1125 | */ | |
1126 | spin_lock_bh(&mvmsta->lock); | |
1127 | txq_id = tid_data->txq_id; | |
1128 | IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", | |
1129 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
b6658ff8 | 1130 | old_state = tid_data->state; |
e3d9e7ce | 1131 | tid_data->state = IWL_AGG_OFF; |
efed6640 | 1132 | mvmsta->agg_tids &= ~BIT(tid); |
e3d9e7ce EG |
1133 | spin_unlock_bh(&mvmsta->lock); |
1134 | ||
b6658ff8 | 1135 | if (old_state >= IWL_AGG_ON) { |
fe92e32a | 1136 | iwl_mvm_drain_sta(mvm, mvmsta, true); |
b6658ff8 JB |
1137 | if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), true)) |
1138 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); | |
fe92e32a EG |
1139 | iwl_trans_wait_tx_queue_empty(mvm->trans, |
1140 | mvmsta->tfd_queue_msk); | |
1141 | iwl_mvm_drain_sta(mvm, mvmsta, false); | |
b6658ff8 | 1142 | |
f7f89e7b JB |
1143 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); |
1144 | ||
0294d9ee | 1145 | iwl_mvm_disable_txq(mvm, tid_data->txq_id, 0); |
b6658ff8 | 1146 | } |
e3d9e7ce | 1147 | |
e3d9e7ce EG |
1148 | mvm->queue_to_mac80211[tid_data->txq_id] = |
1149 | IWL_INVALID_MAC80211_QUEUE; | |
1150 | ||
1151 | return 0; | |
1152 | } | |
1153 | ||
8ca151b5 JB |
1154 | static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) |
1155 | { | |
2dc2a15e | 1156 | int i, max = -1, max_offs = -1; |
8ca151b5 JB |
1157 | |
1158 | lockdep_assert_held(&mvm->mutex); | |
1159 | ||
2dc2a15e JB |
1160 | /* Pick the unused key offset with the highest 'deleted' |
1161 | * counter. Every time a key is deleted, all the counters | |
1162 | * are incremented and the one that was just deleted is | |
1163 | * reset to zero. Thus, the highest counter is the one | |
1164 | * that was deleted longest ago. Pick that one. | |
1165 | */ | |
1166 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1167 | if (test_bit(i, mvm->fw_key_table)) | |
1168 | continue; | |
1169 | if (mvm->fw_key_deleted[i] > max) { | |
1170 | max = mvm->fw_key_deleted[i]; | |
1171 | max_offs = i; | |
1172 | } | |
1173 | } | |
8ca151b5 | 1174 | |
2dc2a15e | 1175 | if (max_offs < 0) |
8ca151b5 JB |
1176 | return STA_KEY_IDX_INVALID; |
1177 | ||
2dc2a15e | 1178 | __set_bit(max_offs, mvm->fw_key_table); |
8ca151b5 | 1179 | |
2dc2a15e | 1180 | return max_offs; |
8ca151b5 JB |
1181 | } |
1182 | ||
1183 | static u8 iwl_mvm_get_key_sta_id(struct ieee80211_vif *vif, | |
1184 | struct ieee80211_sta *sta) | |
1185 | { | |
5b530e95 | 1186 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1187 | |
1188 | if (sta) { | |
9d8ce6af | 1189 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1190 | |
1191 | return mvm_sta->sta_id; | |
1192 | } | |
1193 | ||
1194 | /* | |
1195 | * The device expects GTKs for station interfaces to be | |
1196 | * installed as GTKs for the AP station. If we have no | |
1197 | * station ID, then use AP's station ID. | |
1198 | */ | |
1199 | if (vif->type == NL80211_IFTYPE_STATION && | |
1200 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) | |
1201 | return mvmvif->ap_sta_id; | |
1202 | ||
881acd89 | 1203 | return IWL_MVM_STATION_COUNT; |
8ca151b5 JB |
1204 | } |
1205 | ||
1206 | static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, | |
1207 | struct iwl_mvm_sta *mvm_sta, | |
ba3943b0 | 1208 | struct ieee80211_key_conf *keyconf, bool mcast, |
2f6319d1 | 1209 | u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags) |
8ca151b5 | 1210 | { |
5a258aae | 1211 | struct iwl_mvm_add_sta_key_cmd cmd = {}; |
f9dc0004 | 1212 | __le16 key_flags; |
79920749 JB |
1213 | int ret; |
1214 | u32 status; | |
8ca151b5 JB |
1215 | u16 keyidx; |
1216 | int i; | |
2f6319d1 | 1217 | u8 sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1218 | |
1219 | keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1220 | STA_KEY_FLG_KEYID_MSK; | |
1221 | key_flags = cpu_to_le16(keyidx); | |
1222 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); | |
1223 | ||
1224 | switch (keyconf->cipher) { | |
1225 | case WLAN_CIPHER_SUITE_TKIP: | |
1226 | key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); | |
5a258aae | 1227 | cmd.tkip_rx_tsc_byte2 = tkip_iv32; |
8ca151b5 | 1228 | for (i = 0; i < 5; i++) |
5a258aae MS |
1229 | cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); |
1230 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1231 | break; |
1232 | case WLAN_CIPHER_SUITE_CCMP: | |
1233 | key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); | |
5a258aae | 1234 | memcpy(cmd.key, keyconf->key, keyconf->keylen); |
8ca151b5 | 1235 | break; |
ba3943b0 JB |
1236 | case WLAN_CIPHER_SUITE_WEP104: |
1237 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); | |
aa0cb08b | 1238 | /* fall through */ |
ba3943b0 JB |
1239 | case WLAN_CIPHER_SUITE_WEP40: |
1240 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); | |
1241 | memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); | |
1242 | break; | |
8ca151b5 | 1243 | default: |
e36e5433 MS |
1244 | key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); |
1245 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1246 | } |
1247 | ||
ba3943b0 | 1248 | if (mcast) |
8ca151b5 JB |
1249 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1250 | ||
5a258aae MS |
1251 | cmd.key_offset = keyconf->hw_key_idx; |
1252 | cmd.key_flags = key_flags; | |
8ca151b5 JB |
1253 | cmd.sta_id = sta_id; |
1254 | ||
1255 | status = ADD_STA_SUCCESS; | |
a1022927 | 1256 | if (cmd_flags & CMD_ASYNC) |
f9dc0004 EG |
1257 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, |
1258 | sizeof(cmd), &cmd); | |
a1022927 EG |
1259 | else |
1260 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1261 | &cmd, &status); | |
8ca151b5 JB |
1262 | |
1263 | switch (status) { | |
1264 | case ADD_STA_SUCCESS: | |
1265 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); | |
1266 | break; | |
1267 | default: | |
1268 | ret = -EIO; | |
1269 | IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); | |
1270 | break; | |
1271 | } | |
1272 | ||
1273 | return ret; | |
1274 | } | |
1275 | ||
1276 | static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, | |
1277 | struct ieee80211_key_conf *keyconf, | |
1278 | u8 sta_id, bool remove_key) | |
1279 | { | |
1280 | struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; | |
1281 | ||
1282 | /* verify the key details match the required command's expectations */ | |
1283 | if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || | |
1284 | (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || | |
1285 | (keyconf->keyidx != 4 && keyconf->keyidx != 5))) | |
1286 | return -EINVAL; | |
1287 | ||
1288 | igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); | |
1289 | igtk_cmd.sta_id = cpu_to_le32(sta_id); | |
1290 | ||
1291 | if (remove_key) { | |
1292 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); | |
1293 | } else { | |
1294 | struct ieee80211_key_seq seq; | |
1295 | const u8 *pn; | |
1296 | ||
1297 | memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1298 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); |
1299 | pn = seq.aes_cmac.pn; | |
1300 | igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | | |
1301 | ((u64) pn[4] << 8) | | |
1302 | ((u64) pn[3] << 16) | | |
1303 | ((u64) pn[2] << 24) | | |
1304 | ((u64) pn[1] << 32) | | |
1305 | ((u64) pn[0] << 40)); | |
1306 | } | |
1307 | ||
1308 | IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", | |
1309 | remove_key ? "removing" : "installing", | |
1310 | igtk_cmd.sta_id); | |
1311 | ||
a1022927 | 1312 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
8ca151b5 JB |
1313 | sizeof(igtk_cmd), &igtk_cmd); |
1314 | } | |
1315 | ||
1316 | ||
1317 | static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, | |
1318 | struct ieee80211_vif *vif, | |
1319 | struct ieee80211_sta *sta) | |
1320 | { | |
5b530e95 | 1321 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1322 | |
1323 | if (sta) | |
1324 | return sta->addr; | |
1325 | ||
1326 | if (vif->type == NL80211_IFTYPE_STATION && | |
1327 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { | |
1328 | u8 sta_id = mvmvif->ap_sta_id; | |
1329 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1330 | lockdep_is_held(&mvm->mutex)); | |
1331 | return sta->addr; | |
1332 | } | |
1333 | ||
1334 | ||
1335 | return NULL; | |
1336 | } | |
1337 | ||
2f6319d1 JB |
1338 | static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1339 | struct ieee80211_vif *vif, | |
1340 | struct ieee80211_sta *sta, | |
ba3943b0 JB |
1341 | struct ieee80211_key_conf *keyconf, |
1342 | bool mcast) | |
2f6319d1 JB |
1343 | { |
1344 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1345 | int ret; | |
1346 | const u8 *addr; | |
1347 | struct ieee80211_key_seq seq; | |
1348 | u16 p1k[5]; | |
1349 | ||
1350 | switch (keyconf->cipher) { | |
1351 | case WLAN_CIPHER_SUITE_TKIP: | |
1352 | addr = iwl_mvm_get_mac_addr(mvm, vif, sta); | |
1353 | /* get phase 1 key from mac80211 */ | |
1354 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1355 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
ba3943b0 | 1356 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
2f6319d1 JB |
1357 | seq.tkip.iv32, p1k, 0); |
1358 | break; | |
1359 | case WLAN_CIPHER_SUITE_CCMP: | |
ba3943b0 JB |
1360 | case WLAN_CIPHER_SUITE_WEP40: |
1361 | case WLAN_CIPHER_SUITE_WEP104: | |
1362 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, | |
2f6319d1 JB |
1363 | 0, NULL, 0); |
1364 | break; | |
1365 | default: | |
ba3943b0 | 1366 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
2f6319d1 JB |
1367 | 0, NULL, 0); |
1368 | } | |
1369 | ||
1370 | return ret; | |
1371 | } | |
1372 | ||
1373 | static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, | |
ba3943b0 JB |
1374 | struct ieee80211_key_conf *keyconf, |
1375 | bool mcast) | |
2f6319d1 JB |
1376 | { |
1377 | struct iwl_mvm_add_sta_key_cmd cmd = {}; | |
1378 | __le16 key_flags; | |
1379 | int ret; | |
1380 | u32 status; | |
1381 | ||
1382 | key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1383 | STA_KEY_FLG_KEYID_MSK); | |
1384 | key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); | |
1385 | key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); | |
1386 | ||
ba3943b0 | 1387 | if (mcast) |
2f6319d1 JB |
1388 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1389 | ||
1390 | cmd.key_flags = key_flags; | |
1391 | cmd.key_offset = keyconf->hw_key_idx; | |
1392 | cmd.sta_id = sta_id; | |
1393 | ||
1394 | status = ADD_STA_SUCCESS; | |
1395 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1396 | &cmd, &status); | |
1397 | ||
1398 | switch (status) { | |
1399 | case ADD_STA_SUCCESS: | |
1400 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); | |
1401 | break; | |
1402 | default: | |
1403 | ret = -EIO; | |
1404 | IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); | |
1405 | break; | |
1406 | } | |
1407 | ||
1408 | return ret; | |
1409 | } | |
1410 | ||
8ca151b5 JB |
1411 | int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1412 | struct ieee80211_vif *vif, | |
1413 | struct ieee80211_sta *sta, | |
1414 | struct ieee80211_key_conf *keyconf, | |
1415 | bool have_key_offset) | |
1416 | { | |
ba3943b0 | 1417 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
2f6319d1 | 1418 | u8 sta_id; |
8ca151b5 | 1419 | int ret; |
11828dbc | 1420 | static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; |
8ca151b5 JB |
1421 | |
1422 | lockdep_assert_held(&mvm->mutex); | |
1423 | ||
1424 | /* Get the station id from the mvm local station table */ | |
1425 | sta_id = iwl_mvm_get_key_sta_id(vif, sta); | |
881acd89 | 1426 | if (sta_id == IWL_MVM_STATION_COUNT) { |
8ca151b5 JB |
1427 | IWL_ERR(mvm, "Failed to find station id\n"); |
1428 | return -EINVAL; | |
1429 | } | |
1430 | ||
1431 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { | |
1432 | ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); | |
1433 | goto end; | |
1434 | } | |
1435 | ||
1436 | /* | |
1437 | * It is possible that the 'sta' parameter is NULL, and thus | |
1438 | * there is a need to retrieve the sta from the local station table. | |
1439 | */ | |
1440 | if (!sta) { | |
1441 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1442 | lockdep_is_held(&mvm->mutex)); | |
1443 | if (IS_ERR_OR_NULL(sta)) { | |
1444 | IWL_ERR(mvm, "Invalid station id\n"); | |
1445 | return -EINVAL; | |
1446 | } | |
1447 | } | |
1448 | ||
2f6319d1 | 1449 | if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
8ca151b5 JB |
1450 | return -EINVAL; |
1451 | ||
1452 | if (!have_key_offset) { | |
1453 | /* | |
1454 | * The D3 firmware hardcodes the PTK offset to 0, so we have to | |
1455 | * configure it there. As a result, this workaround exists to | |
1456 | * let the caller set the key offset (hw_key_idx), see d3.c. | |
1457 | */ | |
1458 | keyconf->hw_key_idx = iwl_mvm_set_fw_key_idx(mvm); | |
1459 | if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) | |
1460 | return -ENOSPC; | |
1461 | } | |
1462 | ||
ba3943b0 JB |
1463 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, mcast); |
1464 | if (ret) { | |
8ca151b5 | 1465 | __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table); |
ba3943b0 JB |
1466 | goto end; |
1467 | } | |
1468 | ||
1469 | /* | |
1470 | * For WEP, the same key is used for multicast and unicast. Upload it | |
1471 | * again, using the same key offset, and now pointing the other one | |
1472 | * to the same key slot (offset). | |
1473 | * If this fails, remove the original as well. | |
1474 | */ | |
1475 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1476 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { | |
1477 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, !mcast); | |
1478 | if (ret) { | |
1479 | __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table); | |
1480 | __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); | |
1481 | } | |
1482 | } | |
8ca151b5 JB |
1483 | |
1484 | end: | |
1485 | IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
1486 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, | |
11828dbc | 1487 | sta ? sta->addr : zero_addr, ret); |
8ca151b5 JB |
1488 | return ret; |
1489 | } | |
1490 | ||
1491 | int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, | |
1492 | struct ieee80211_vif *vif, | |
1493 | struct ieee80211_sta *sta, | |
1494 | struct ieee80211_key_conf *keyconf) | |
1495 | { | |
ba3943b0 | 1496 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 1497 | u8 sta_id; |
2dc2a15e | 1498 | int ret, i; |
8ca151b5 JB |
1499 | |
1500 | lockdep_assert_held(&mvm->mutex); | |
1501 | ||
1502 | /* Get the station id from the mvm local station table */ | |
1503 | sta_id = iwl_mvm_get_key_sta_id(vif, sta); | |
1504 | ||
1505 | IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", | |
1506 | keyconf->keyidx, sta_id); | |
1507 | ||
1508 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) | |
1509 | return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); | |
1510 | ||
2f6319d1 | 1511 | if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { |
8ca151b5 JB |
1512 | IWL_ERR(mvm, "offset %d not used in fw key table.\n", |
1513 | keyconf->hw_key_idx); | |
1514 | return -ENOENT; | |
1515 | } | |
1516 | ||
2dc2a15e JB |
1517 | /* track which key was deleted last */ |
1518 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1519 | if (mvm->fw_key_deleted[i] < U8_MAX) | |
1520 | mvm->fw_key_deleted[i]++; | |
1521 | } | |
1522 | mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; | |
1523 | ||
881acd89 | 1524 | if (sta_id == IWL_MVM_STATION_COUNT) { |
8ca151b5 JB |
1525 | IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); |
1526 | return 0; | |
1527 | } | |
1528 | ||
1529 | /* | |
1530 | * It is possible that the 'sta' parameter is NULL, and thus | |
1531 | * there is a need to retrieve the sta from the local station table, | |
1532 | * for example when a GTK is removed (where the sta_id will then be | |
1533 | * the AP ID, and no station was passed by mac80211.) | |
1534 | */ | |
1535 | if (!sta) { | |
1536 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1537 | lockdep_is_held(&mvm->mutex)); | |
1538 | if (!sta) { | |
1539 | IWL_ERR(mvm, "Invalid station id\n"); | |
1540 | return -EINVAL; | |
1541 | } | |
1542 | } | |
1543 | ||
2f6319d1 | 1544 | if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
8ca151b5 JB |
1545 | return -EINVAL; |
1546 | ||
ba3943b0 JB |
1547 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
1548 | if (ret) | |
1549 | return ret; | |
1550 | ||
1551 | /* delete WEP key twice to get rid of (now useless) offset */ | |
1552 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1553 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) | |
1554 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); | |
1555 | ||
1556 | return ret; | |
8ca151b5 JB |
1557 | } |
1558 | ||
1559 | void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, | |
1560 | struct ieee80211_vif *vif, | |
1561 | struct ieee80211_key_conf *keyconf, | |
1562 | struct ieee80211_sta *sta, u32 iv32, | |
1563 | u16 *phase1key) | |
1564 | { | |
c3eb536a | 1565 | struct iwl_mvm_sta *mvm_sta; |
8ca151b5 | 1566 | u8 sta_id = iwl_mvm_get_key_sta_id(vif, sta); |
ba3943b0 | 1567 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 1568 | |
881acd89 | 1569 | if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT)) |
8ca151b5 JB |
1570 | return; |
1571 | ||
c3eb536a BL |
1572 | rcu_read_lock(); |
1573 | ||
1574 | if (!sta) { | |
1575 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1576 | if (WARN_ON(IS_ERR_OR_NULL(sta))) { | |
1577 | rcu_read_unlock(); | |
1578 | return; | |
1579 | } | |
1580 | } | |
1581 | ||
2f6319d1 | 1582 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
ba3943b0 | 1583 | iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
8ca151b5 | 1584 | iv32, phase1key, CMD_ASYNC); |
c3eb536a | 1585 | rcu_read_unlock(); |
8ca151b5 JB |
1586 | } |
1587 | ||
9cc40712 JB |
1588 | void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, |
1589 | struct ieee80211_sta *sta) | |
8ca151b5 | 1590 | { |
5b577a90 | 1591 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1592 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1593 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1594 | .sta_id = mvmsta->sta_id, |
5af01772 | 1595 | .station_flags_msk = cpu_to_le32(STA_FLG_PS), |
9cc40712 | 1596 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 JB |
1597 | }; |
1598 | int ret; | |
1599 | ||
f9dc0004 | 1600 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); |
8ca151b5 JB |
1601 | if (ret) |
1602 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1603 | } | |
1604 | ||
9cc40712 JB |
1605 | void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, |
1606 | struct ieee80211_sta *sta, | |
8ca151b5 | 1607 | enum ieee80211_frame_release_type reason, |
3e56eadf JB |
1608 | u16 cnt, u16 tids, bool more_data, |
1609 | bool agg) | |
8ca151b5 | 1610 | { |
5b577a90 | 1611 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1612 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1613 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1614 | .sta_id = mvmsta->sta_id, |
8ca151b5 JB |
1615 | .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, |
1616 | .sleep_tx_count = cpu_to_le16(cnt), | |
9cc40712 | 1617 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 | 1618 | }; |
3e56eadf JB |
1619 | int tid, ret; |
1620 | unsigned long _tids = tids; | |
1621 | ||
1622 | /* convert TIDs to ACs - we don't support TSPEC so that's OK | |
1623 | * Note that this field is reserved and unused by firmware not | |
1624 | * supporting GO uAPSD, so it's safe to always do this. | |
1625 | */ | |
1626 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) | |
1627 | cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); | |
1628 | ||
1629 | /* If we're releasing frames from aggregation queues then check if the | |
1630 | * all queues combined that we're releasing frames from have | |
1631 | * - more frames than the service period, in which case more_data | |
1632 | * needs to be set | |
1633 | * - fewer than 'cnt' frames, in which case we need to adjust the | |
1634 | * firmware command (but do that unconditionally) | |
1635 | */ | |
1636 | if (agg) { | |
1637 | int remaining = cnt; | |
1638 | ||
1639 | spin_lock_bh(&mvmsta->lock); | |
1640 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { | |
1641 | struct iwl_mvm_tid_data *tid_data; | |
1642 | u16 n_queued; | |
1643 | ||
1644 | tid_data = &mvmsta->tid_data[tid]; | |
1645 | if (WARN(tid_data->state != IWL_AGG_ON && | |
1646 | tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, | |
1647 | "TID %d state is %d\n", | |
1648 | tid, tid_data->state)) { | |
1649 | spin_unlock_bh(&mvmsta->lock); | |
1650 | ieee80211_sta_eosp(sta); | |
1651 | return; | |
1652 | } | |
1653 | ||
1654 | n_queued = iwl_mvm_tid_queued(tid_data); | |
1655 | if (n_queued > remaining) { | |
1656 | more_data = true; | |
1657 | remaining = 0; | |
1658 | break; | |
1659 | } | |
1660 | remaining -= n_queued; | |
1661 | } | |
1662 | spin_unlock_bh(&mvmsta->lock); | |
1663 | ||
1664 | cmd.sleep_tx_count = cpu_to_le16(cnt - remaining); | |
1665 | if (WARN_ON(cnt - remaining == 0)) { | |
1666 | ieee80211_sta_eosp(sta); | |
1667 | return; | |
1668 | } | |
1669 | } | |
1670 | ||
1671 | /* Note: this is ignored by firmware not supporting GO uAPSD */ | |
1672 | if (more_data) | |
1673 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); | |
1674 | ||
1675 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { | |
1676 | mvmsta->next_status_eosp = true; | |
1677 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); | |
1678 | } else { | |
1679 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); | |
1680 | } | |
8ca151b5 | 1681 | |
f9dc0004 | 1682 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); |
8ca151b5 JB |
1683 | if (ret) |
1684 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1685 | } | |
3e56eadf | 1686 | |
0416841d JB |
1687 | void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, |
1688 | struct iwl_rx_cmd_buffer *rxb) | |
3e56eadf JB |
1689 | { |
1690 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1691 | struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; | |
1692 | struct ieee80211_sta *sta; | |
1693 | u32 sta_id = le32_to_cpu(notif->sta_id); | |
1694 | ||
1695 | if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) | |
0416841d | 1696 | return; |
3e56eadf JB |
1697 | |
1698 | rcu_read_lock(); | |
1699 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1700 | if (!IS_ERR_OR_NULL(sta)) | |
1701 | ieee80211_sta_eosp(sta); | |
1702 | rcu_read_unlock(); | |
3e56eadf | 1703 | } |
09b0ce1a AO |
1704 | |
1705 | void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, | |
1706 | struct iwl_mvm_sta *mvmsta, bool disable) | |
1707 | { | |
1708 | struct iwl_mvm_add_sta_cmd cmd = { | |
1709 | .add_modify = STA_MODE_MODIFY, | |
1710 | .sta_id = mvmsta->sta_id, | |
1711 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
1712 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
1713 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), | |
1714 | }; | |
1715 | int ret; | |
1716 | ||
09b0ce1a AO |
1717 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); |
1718 | if (ret) | |
1719 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1720 | } | |
003e5236 AO |
1721 | |
1722 | void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, | |
1723 | struct ieee80211_sta *sta, | |
1724 | bool disable) | |
1725 | { | |
1726 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1727 | ||
1728 | spin_lock_bh(&mvm_sta->lock); | |
1729 | ||
1730 | if (mvm_sta->disable_tx == disable) { | |
1731 | spin_unlock_bh(&mvm_sta->lock); | |
1732 | return; | |
1733 | } | |
1734 | ||
1735 | mvm_sta->disable_tx = disable; | |
1736 | ||
1737 | /* | |
0d365ae5 SS |
1738 | * Tell mac80211 to start/stop queuing tx for this station, |
1739 | * but don't stop queuing if there are still pending frames | |
003e5236 AO |
1740 | * for this station. |
1741 | */ | |
1742 | if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) | |
1743 | ieee80211_sta_block_awake(mvm->hw, sta, disable); | |
1744 | ||
1745 | iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); | |
1746 | ||
1747 | spin_unlock_bh(&mvm_sta->lock); | |
1748 | } | |
1749 | ||
1750 | void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, | |
1751 | struct iwl_mvm_vif *mvmvif, | |
1752 | bool disable) | |
1753 | { | |
1754 | struct ieee80211_sta *sta; | |
1755 | struct iwl_mvm_sta *mvm_sta; | |
1756 | int i; | |
1757 | ||
1758 | lockdep_assert_held(&mvm->mutex); | |
1759 | ||
1760 | /* Block/unblock all the stations of the given mvmvif */ | |
1761 | for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { | |
1762 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], | |
1763 | lockdep_is_held(&mvm->mutex)); | |
1764 | if (IS_ERR_OR_NULL(sta)) | |
1765 | continue; | |
1766 | ||
1767 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1768 | if (mvm_sta->mac_id_n_color != | |
1769 | FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) | |
1770 | continue; | |
1771 | ||
1772 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); | |
1773 | } | |
1774 | } | |
dc88b4ba LC |
1775 | |
1776 | void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1777 | { | |
1778 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1779 | struct iwl_mvm_sta *mvmsta; | |
1780 | ||
1781 | rcu_read_lock(); | |
1782 | ||
1783 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); | |
1784 | ||
1785 | if (!WARN_ON(!mvmsta)) | |
1786 | iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); | |
1787 | ||
1788 | rcu_read_unlock(); | |
1789 | } |