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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: | |
cb2f8277 | 29 | * Intel Linux Wireless <linuxwifi@intel.com> |
8ca151b5 JB |
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), | |
cf0cda19 | 109 | .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), |
4b8265ab | 110 | }; |
8ca151b5 JB |
111 | int ret; |
112 | u32 status; | |
113 | u32 agg_size = 0, mpdu_dens = 0; | |
114 | ||
7a453973 JB |
115 | if (!update) { |
116 | add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
117 | memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); | |
118 | } | |
5bc5aaad JB |
119 | |
120 | switch (sta->bandwidth) { | |
121 | case IEEE80211_STA_RX_BW_160: | |
122 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); | |
123 | /* fall through */ | |
124 | case IEEE80211_STA_RX_BW_80: | |
125 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); | |
126 | /* fall through */ | |
127 | case IEEE80211_STA_RX_BW_40: | |
128 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); | |
129 | /* fall through */ | |
130 | case IEEE80211_STA_RX_BW_20: | |
131 | if (sta->ht_cap.ht_supported) | |
132 | add_sta_cmd.station_flags |= | |
133 | cpu_to_le32(STA_FLG_FAT_EN_20MHZ); | |
134 | break; | |
135 | } | |
136 | ||
137 | switch (sta->rx_nss) { | |
138 | case 1: | |
139 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
140 | break; | |
141 | case 2: | |
142 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); | |
143 | break; | |
144 | case 3 ... 8: | |
145 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); | |
146 | break; | |
147 | } | |
148 | ||
149 | switch (sta->smps_mode) { | |
150 | case IEEE80211_SMPS_AUTOMATIC: | |
151 | case IEEE80211_SMPS_NUM_MODES: | |
152 | WARN_ON(1); | |
153 | break; | |
154 | case IEEE80211_SMPS_STATIC: | |
155 | /* override NSS */ | |
156 | add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); | |
157 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
158 | break; | |
159 | case IEEE80211_SMPS_DYNAMIC: | |
160 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); | |
161 | break; | |
162 | case IEEE80211_SMPS_OFF: | |
163 | /* nothing */ | |
164 | break; | |
165 | } | |
8ca151b5 JB |
166 | |
167 | if (sta->ht_cap.ht_supported) { | |
168 | add_sta_cmd.station_flags_msk |= | |
169 | cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | | |
170 | STA_FLG_AGG_MPDU_DENS_MSK); | |
171 | ||
172 | mpdu_dens = sta->ht_cap.ampdu_density; | |
173 | } | |
174 | ||
175 | if (sta->vht_cap.vht_supported) { | |
176 | agg_size = sta->vht_cap.cap & | |
177 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; | |
178 | agg_size >>= | |
179 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; | |
180 | } else if (sta->ht_cap.ht_supported) { | |
181 | agg_size = sta->ht_cap.ampdu_factor; | |
182 | } | |
183 | ||
184 | add_sta_cmd.station_flags |= | |
185 | cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); | |
186 | add_sta_cmd.station_flags |= | |
187 | cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); | |
188 | ||
189 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
190 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(add_sta_cmd), |
191 | &add_sta_cmd, &status); | |
8ca151b5 JB |
192 | if (ret) |
193 | return ret; | |
194 | ||
195 | switch (status) { | |
196 | case ADD_STA_SUCCESS: | |
197 | IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); | |
198 | break; | |
199 | default: | |
200 | ret = -EIO; | |
201 | IWL_ERR(mvm, "ADD_STA failed\n"); | |
202 | break; | |
203 | } | |
204 | ||
205 | return ret; | |
206 | } | |
207 | ||
a0f6bf2a AN |
208 | static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm, |
209 | struct ieee80211_sta *sta) | |
210 | { | |
211 | unsigned long used_hw_queues; | |
212 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
5d42e7b2 EG |
213 | unsigned int wdg_timeout = |
214 | iwl_mvm_get_wd_timeout(mvm, NULL, true, false); | |
a0f6bf2a AN |
215 | u32 ac; |
216 | ||
217 | lockdep_assert_held(&mvm->mutex); | |
218 | ||
219 | used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL); | |
220 | ||
221 | /* Find available queues, and allocate them to the ACs */ | |
222 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
223 | u8 queue = find_first_zero_bit(&used_hw_queues, | |
224 | mvm->first_agg_queue); | |
225 | ||
226 | if (queue >= mvm->first_agg_queue) { | |
227 | IWL_ERR(mvm, "Failed to allocate STA queue\n"); | |
228 | return -EBUSY; | |
229 | } | |
230 | ||
231 | __set_bit(queue, &used_hw_queues); | |
232 | mvmsta->hw_queue[ac] = queue; | |
233 | } | |
234 | ||
235 | /* Found a place for all queues - enable them */ | |
236 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
237 | iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac], | |
4ecafae9 | 238 | mvmsta->hw_queue[ac], |
5c1156ef LK |
239 | iwl_mvm_ac_to_tx_fifo[ac], 0, |
240 | wdg_timeout); | |
a0f6bf2a AN |
241 | mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]); |
242 | } | |
243 | ||
244 | return 0; | |
245 | } | |
246 | ||
247 | static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm, | |
248 | struct ieee80211_sta *sta) | |
249 | { | |
250 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
251 | unsigned long sta_msk; | |
252 | int i; | |
253 | ||
254 | lockdep_assert_held(&mvm->mutex); | |
255 | ||
256 | /* disable the TDLS STA-specific queues */ | |
257 | sta_msk = mvmsta->tfd_queue_msk; | |
a4ca3ed4 | 258 | for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE) |
06ecdba3 | 259 | iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0); |
a0f6bf2a AN |
260 | } |
261 | ||
8ca151b5 JB |
262 | int iwl_mvm_add_sta(struct iwl_mvm *mvm, |
263 | struct ieee80211_vif *vif, | |
264 | struct ieee80211_sta *sta) | |
265 | { | |
266 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 267 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
268 | int i, ret, sta_id; |
269 | ||
270 | lockdep_assert_held(&mvm->mutex); | |
271 | ||
272 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) | |
b92e661b EP |
273 | sta_id = iwl_mvm_find_free_sta_id(mvm, |
274 | ieee80211_vif_type_p2p(vif)); | |
8ca151b5 JB |
275 | else |
276 | sta_id = mvm_sta->sta_id; | |
277 | ||
36f4631c | 278 | if (sta_id == IWL_MVM_STATION_COUNT) |
8ca151b5 JB |
279 | return -ENOSPC; |
280 | ||
281 | spin_lock_init(&mvm_sta->lock); | |
282 | ||
283 | mvm_sta->sta_id = sta_id; | |
284 | mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, | |
285 | mvmvif->color); | |
286 | mvm_sta->vif = vif; | |
287 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
9ee718aa EL |
288 | mvm_sta->tx_protection = 0; |
289 | mvm_sta->tt_tx_protection = false; | |
8ca151b5 JB |
290 | |
291 | /* HW restart, don't assume the memory has been zeroed */ | |
e3d4bc8c | 292 | atomic_set(&mvm->pending_frames[sta_id], 0); |
69191afe | 293 | mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ |
8ca151b5 | 294 | mvm_sta->tfd_queue_msk = 0; |
a0f6bf2a AN |
295 | |
296 | /* allocate new queues for a TDLS station */ | |
297 | if (sta->tdls) { | |
298 | ret = iwl_mvm_tdls_sta_init(mvm, sta); | |
299 | if (ret) | |
300 | return ret; | |
301 | } else { | |
302 | for (i = 0; i < IEEE80211_NUM_ACS; i++) | |
303 | if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) | |
304 | mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); | |
305 | } | |
8ca151b5 | 306 | |
6d9d32b8 JB |
307 | /* for HW restart - reset everything but the sequence number */ |
308 | for (i = 0; i < IWL_MAX_TID_COUNT; i++) { | |
309 | u16 seq = mvm_sta->tid_data[i].seq_number; | |
310 | memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); | |
311 | mvm_sta->tid_data[i].seq_number = seq; | |
312 | } | |
efed6640 | 313 | mvm_sta->agg_tids = 0; |
8ca151b5 | 314 | |
7a453973 | 315 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, false); |
8ca151b5 | 316 | if (ret) |
a0f6bf2a | 317 | goto err; |
8ca151b5 | 318 | |
9e848010 JB |
319 | if (vif->type == NL80211_IFTYPE_STATION) { |
320 | if (!sta->tdls) { | |
321 | WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); | |
322 | mvmvif->ap_sta_id = sta_id; | |
323 | } else { | |
324 | WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); | |
325 | } | |
326 | } | |
8ca151b5 JB |
327 | |
328 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); | |
329 | ||
330 | return 0; | |
a0f6bf2a AN |
331 | |
332 | err: | |
333 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
334 | return ret; | |
8ca151b5 JB |
335 | } |
336 | ||
7a453973 JB |
337 | int iwl_mvm_update_sta(struct iwl_mvm *mvm, |
338 | struct ieee80211_vif *vif, | |
339 | struct ieee80211_sta *sta) | |
340 | { | |
341 | return iwl_mvm_sta_send_to_fw(mvm, sta, true); | |
342 | } | |
343 | ||
8ca151b5 JB |
344 | int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, |
345 | bool drain) | |
346 | { | |
f9dc0004 | 347 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
348 | int ret; |
349 | u32 status; | |
350 | ||
351 | lockdep_assert_held(&mvm->mutex); | |
352 | ||
353 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
354 | cmd.sta_id = mvmsta->sta_id; | |
355 | cmd.add_modify = STA_MODE_MODIFY; | |
356 | cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; | |
357 | cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); | |
358 | ||
359 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
360 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
361 | &cmd, &status); | |
8ca151b5 JB |
362 | if (ret) |
363 | return ret; | |
364 | ||
365 | switch (status) { | |
366 | case ADD_STA_SUCCESS: | |
367 | IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", | |
368 | mvmsta->sta_id); | |
369 | break; | |
370 | default: | |
371 | ret = -EIO; | |
372 | IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", | |
373 | mvmsta->sta_id); | |
374 | break; | |
375 | } | |
376 | ||
377 | return ret; | |
378 | } | |
379 | ||
380 | /* | |
381 | * Remove a station from the FW table. Before sending the command to remove | |
382 | * the station validate that the station is indeed known to the driver (sanity | |
383 | * only). | |
384 | */ | |
385 | static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) | |
386 | { | |
387 | struct ieee80211_sta *sta; | |
388 | struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { | |
389 | .sta_id = sta_id, | |
390 | }; | |
391 | int ret; | |
392 | ||
393 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
394 | lockdep_is_held(&mvm->mutex)); | |
395 | ||
396 | /* Note: internal stations are marked as error values */ | |
397 | if (!sta) { | |
398 | IWL_ERR(mvm, "Invalid station id\n"); | |
399 | return -EINVAL; | |
400 | } | |
401 | ||
a1022927 | 402 | ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, |
8ca151b5 JB |
403 | sizeof(rm_sta_cmd), &rm_sta_cmd); |
404 | if (ret) { | |
405 | IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); | |
406 | return ret; | |
407 | } | |
408 | ||
409 | return 0; | |
410 | } | |
411 | ||
412 | void iwl_mvm_sta_drained_wk(struct work_struct *wk) | |
413 | { | |
414 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); | |
415 | u8 sta_id; | |
416 | ||
417 | /* | |
418 | * The mutex is needed because of the SYNC cmd, but not only: if the | |
419 | * work would run concurrently with iwl_mvm_rm_sta, it would run before | |
420 | * iwl_mvm_rm_sta sets the station as busy, and exit. Then | |
421 | * iwl_mvm_rm_sta would set the station as busy, and nobody will clean | |
422 | * that later. | |
423 | */ | |
424 | mutex_lock(&mvm->mutex); | |
425 | ||
426 | for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { | |
427 | int ret; | |
428 | struct ieee80211_sta *sta = | |
429 | rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
430 | lockdep_is_held(&mvm->mutex)); | |
431 | ||
1ddbbb0c JB |
432 | /* |
433 | * This station is in use or RCU-removed; the latter happens in | |
434 | * managed mode, where mac80211 removes the station before we | |
435 | * can remove it from firmware (we can only do that after the | |
436 | * MAC is marked unassociated), and possibly while the deauth | |
437 | * frame to disconnect from the AP is still queued. Then, the | |
438 | * station pointer is -ENOENT when the last skb is reclaimed. | |
439 | */ | |
440 | if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) | |
8ca151b5 JB |
441 | continue; |
442 | ||
443 | if (PTR_ERR(sta) == -EINVAL) { | |
444 | IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", | |
445 | sta_id); | |
446 | continue; | |
447 | } | |
448 | ||
449 | if (!sta) { | |
450 | IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", | |
451 | sta_id); | |
452 | continue; | |
453 | } | |
454 | ||
455 | WARN_ON(PTR_ERR(sta) != -EBUSY); | |
456 | /* This station was removed and we waited until it got drained, | |
457 | * we can now proceed and remove it. | |
458 | */ | |
459 | ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
460 | if (ret) { | |
461 | IWL_ERR(mvm, | |
462 | "Couldn't remove sta %d after it was drained\n", | |
463 | sta_id); | |
464 | continue; | |
465 | } | |
c531c771 | 466 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 | 467 | clear_bit(sta_id, mvm->sta_drained); |
a0f6bf2a AN |
468 | |
469 | if (mvm->tfd_drained[sta_id]) { | |
470 | unsigned long i, msk = mvm->tfd_drained[sta_id]; | |
471 | ||
a4ca3ed4 | 472 | for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) |
06ecdba3 AN |
473 | iwl_mvm_disable_txq(mvm, i, i, |
474 | IWL_MAX_TID_COUNT, 0); | |
a0f6bf2a AN |
475 | |
476 | mvm->tfd_drained[sta_id] = 0; | |
477 | IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", | |
478 | sta_id, msk); | |
479 | } | |
8ca151b5 JB |
480 | } |
481 | ||
482 | mutex_unlock(&mvm->mutex); | |
483 | } | |
484 | ||
485 | int iwl_mvm_rm_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); |
8ca151b5 JB |
491 | int ret; |
492 | ||
493 | lockdep_assert_held(&mvm->mutex); | |
494 | ||
495 | if (vif->type == NL80211_IFTYPE_STATION && | |
496 | mvmvif->ap_sta_id == mvm_sta->sta_id) { | |
fe92e32a EG |
497 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
498 | if (ret) | |
499 | return ret; | |
80d85655 | 500 | /* flush its queues here since we are freeing mvm_sta */ |
5888a40c | 501 | ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); |
fe92e32a EG |
502 | if (ret) |
503 | return ret; | |
504 | ret = iwl_trans_wait_tx_queue_empty(mvm->trans, | |
505 | mvm_sta->tfd_queue_msk); | |
506 | if (ret) | |
507 | return ret; | |
508 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); | |
80d85655 | 509 | |
8ca151b5 JB |
510 | /* if we are associated - we can't remove the AP STA now */ |
511 | if (vif->bss_conf.assoc) | |
512 | return ret; | |
513 | ||
514 | /* unassoc - go ahead - remove the AP STA now */ | |
515 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
37577fe2 EP |
516 | |
517 | /* clear d0i3_ap_sta_id if no longer relevant */ | |
518 | if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) | |
519 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
8ca151b5 JB |
520 | } |
521 | ||
1d3c3f63 AN |
522 | /* |
523 | * This shouldn't happen - the TDLS channel switch should be canceled | |
524 | * before the STA is removed. | |
525 | */ | |
526 | if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { | |
527 | mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; | |
528 | cancel_delayed_work(&mvm->tdls_cs.dwork); | |
529 | } | |
530 | ||
e3d4bc8c EG |
531 | /* |
532 | * Make sure that the tx response code sees the station as -EBUSY and | |
533 | * calls the drain worker. | |
534 | */ | |
535 | spin_lock_bh(&mvm_sta->lock); | |
8ca151b5 JB |
536 | /* |
537 | * There are frames pending on the AC queues for this station. | |
538 | * We need to wait until all the frames are drained... | |
539 | */ | |
e3d4bc8c | 540 | if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { |
8ca151b5 JB |
541 | rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], |
542 | ERR_PTR(-EBUSY)); | |
e3d4bc8c | 543 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
544 | |
545 | /* disable TDLS sta queues on drain complete */ | |
546 | if (sta->tdls) { | |
547 | mvm->tfd_drained[mvm_sta->sta_id] = | |
548 | mvm_sta->tfd_queue_msk; | |
549 | IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", | |
550 | mvm_sta->sta_id); | |
551 | } | |
552 | ||
e3d4bc8c | 553 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
8ca151b5 | 554 | } else { |
e3d4bc8c | 555 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
556 | |
557 | if (sta->tdls) | |
558 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
559 | ||
8ca151b5 | 560 | ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); |
c531c771 | 561 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); |
8ca151b5 JB |
562 | } |
563 | ||
564 | return ret; | |
565 | } | |
566 | ||
567 | int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, | |
568 | struct ieee80211_vif *vif, | |
569 | u8 sta_id) | |
570 | { | |
571 | int ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
572 | ||
573 | lockdep_assert_held(&mvm->mutex); | |
574 | ||
c531c771 | 575 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 JB |
576 | return ret; |
577 | } | |
578 | ||
0e39eb03 CRI |
579 | int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, |
580 | struct iwl_mvm_int_sta *sta, | |
581 | u32 qmask, enum nl80211_iftype iftype) | |
8ca151b5 JB |
582 | { |
583 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
b92e661b | 584 | sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); |
8ca151b5 JB |
585 | if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) |
586 | return -ENOSPC; | |
587 | } | |
588 | ||
589 | sta->tfd_queue_msk = qmask; | |
590 | ||
591 | /* put a non-NULL value so iterating over the stations won't stop */ | |
592 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); | |
593 | return 0; | |
594 | } | |
595 | ||
712b24ad JB |
596 | static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, |
597 | struct iwl_mvm_int_sta *sta) | |
8ca151b5 | 598 | { |
c531c771 | 599 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); |
8ca151b5 JB |
600 | memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); |
601 | sta->sta_id = IWL_MVM_STATION_COUNT; | |
602 | } | |
603 | ||
604 | static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, | |
605 | struct iwl_mvm_int_sta *sta, | |
606 | const u8 *addr, | |
607 | u16 mac_id, u16 color) | |
608 | { | |
f9dc0004 | 609 | struct iwl_mvm_add_sta_cmd cmd; |
8ca151b5 JB |
610 | int ret; |
611 | u32 status; | |
612 | ||
613 | lockdep_assert_held(&mvm->mutex); | |
614 | ||
f9dc0004 | 615 | memset(&cmd, 0, sizeof(cmd)); |
8ca151b5 JB |
616 | cmd.sta_id = sta->sta_id; |
617 | cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, | |
618 | color)); | |
619 | ||
620 | cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); | |
cf0cda19 | 621 | cmd.tid_disable_tx = cpu_to_le16(0xffff); |
8ca151b5 JB |
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 */ |
4ecafae9 | 654 | iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, |
5c1156ef | 655 | IWL_MVM_TX_FIFO_MCAST, 0, 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 | ||
0e39eb03 CRI |
671 | int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
672 | { | |
673 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
674 | ||
675 | lockdep_assert_held(&mvm->mutex); | |
676 | return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, | |
677 | mvmvif->id, 0); | |
678 | } | |
679 | ||
680 | int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
681 | { | |
682 | int ret; | |
683 | ||
684 | lockdep_assert_held(&mvm->mutex); | |
685 | ||
686 | ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); | |
687 | if (ret) | |
688 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
689 | ||
690 | return ret; | |
691 | } | |
692 | ||
693 | void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) | |
694 | { | |
695 | iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); | |
696 | } | |
697 | ||
712b24ad JB |
698 | void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) |
699 | { | |
700 | lockdep_assert_held(&mvm->mutex); | |
701 | ||
702 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
703 | } | |
704 | ||
8ca151b5 JB |
705 | /* |
706 | * Send the add station command for the vif's broadcast station. | |
707 | * Assumes that the station was already allocated. | |
708 | * | |
709 | * @mvm: the mvm component | |
710 | * @vif: the interface to which the broadcast station is added | |
711 | * @bsta: the broadcast station to add. | |
712 | */ | |
013290aa | 713 | int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
714 | { |
715 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 716 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
5023d966 | 717 | static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
a4243402 | 718 | const u8 *baddr = _baddr; |
8ca151b5 JB |
719 | |
720 | lockdep_assert_held(&mvm->mutex); | |
721 | ||
5023d966 JB |
722 | if (vif->type == NL80211_IFTYPE_ADHOC) |
723 | baddr = vif->bss_conf.bssid; | |
724 | ||
8ca151b5 JB |
725 | if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) |
726 | return -ENOSPC; | |
727 | ||
728 | return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, | |
729 | mvmvif->id, mvmvif->color); | |
730 | } | |
731 | ||
732 | /* Send the FW a request to remove the station from it's internal data | |
733 | * structures, but DO NOT remove the entry from the local data structures. */ | |
013290aa | 734 | int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 | 735 | { |
013290aa | 736 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
737 | int ret; |
738 | ||
739 | lockdep_assert_held(&mvm->mutex); | |
740 | ||
013290aa | 741 | ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); |
8ca151b5 JB |
742 | if (ret) |
743 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
744 | return ret; | |
745 | } | |
746 | ||
013290aa JB |
747 | int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
748 | { | |
749 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
750 | u32 qmask; | |
751 | ||
752 | lockdep_assert_held(&mvm->mutex); | |
753 | ||
d92b732e | 754 | qmask = iwl_mvm_mac_get_queues_mask(vif); |
013290aa JB |
755 | |
756 | /* | |
757 | * The firmware defines the TFD queue mask to only be relevant | |
758 | * for *unicast* queues, so the multicast (CAB) queue shouldn't | |
759 | * be included. | |
760 | */ | |
761 | if (vif->type == NL80211_IFTYPE_AP) | |
762 | qmask &= ~BIT(vif->cab_queue); | |
763 | ||
764 | return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, | |
765 | ieee80211_vif_type_p2p(vif)); | |
766 | } | |
767 | ||
8ca151b5 JB |
768 | /* Allocate a new station entry for the broadcast station to the given vif, |
769 | * and send it to the FW. | |
770 | * Note that each P2P mac should have its own broadcast station. | |
771 | * | |
772 | * @mvm: the mvm component | |
773 | * @vif: the interface to which the broadcast station is added | |
774 | * @bsta: the broadcast station to add. */ | |
013290aa | 775 | int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
776 | { |
777 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 778 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
8ca151b5 JB |
779 | int ret; |
780 | ||
781 | lockdep_assert_held(&mvm->mutex); | |
782 | ||
013290aa | 783 | ret = iwl_mvm_alloc_bcast_sta(mvm, vif); |
8ca151b5 JB |
784 | if (ret) |
785 | return ret; | |
786 | ||
013290aa | 787 | ret = iwl_mvm_send_add_bcast_sta(mvm, vif); |
8ca151b5 JB |
788 | |
789 | if (ret) | |
790 | iwl_mvm_dealloc_int_sta(mvm, bsta); | |
013290aa | 791 | |
8ca151b5 JB |
792 | return ret; |
793 | } | |
794 | ||
013290aa JB |
795 | void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
796 | { | |
797 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
798 | ||
799 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
800 | } | |
801 | ||
8ca151b5 JB |
802 | /* |
803 | * Send the FW a request to remove the station from it's internal data | |
804 | * structures, and in addition remove it from the local data structure. | |
805 | */ | |
013290aa | 806 | int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
807 | { |
808 | int ret; | |
809 | ||
810 | lockdep_assert_held(&mvm->mutex); | |
811 | ||
013290aa JB |
812 | ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); |
813 | ||
814 | iwl_mvm_dealloc_bcast_sta(mvm, vif); | |
8ca151b5 | 815 | |
8ca151b5 JB |
816 | return ret; |
817 | } | |
818 | ||
113a0447 EG |
819 | #define IWL_MAX_RX_BA_SESSIONS 16 |
820 | ||
8ca151b5 JB |
821 | int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
822 | int tid, u16 ssn, bool start) | |
823 | { | |
9d8ce6af | 824 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 825 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
826 | int ret; |
827 | u32 status; | |
828 | ||
829 | lockdep_assert_held(&mvm->mutex); | |
830 | ||
113a0447 EG |
831 | if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { |
832 | IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); | |
833 | return -ENOSPC; | |
834 | } | |
835 | ||
8ca151b5 JB |
836 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
837 | cmd.sta_id = mvm_sta->sta_id; | |
838 | cmd.add_modify = STA_MODE_MODIFY; | |
93a42667 EG |
839 | if (start) { |
840 | cmd.add_immediate_ba_tid = (u8) tid; | |
841 | cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
842 | } else { | |
843 | cmd.remove_immediate_ba_tid = (u8) tid; | |
844 | } | |
8ca151b5 JB |
845 | cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : |
846 | STA_MODIFY_REMOVE_BA_TID; | |
847 | ||
848 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
849 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
850 | &cmd, &status); | |
8ca151b5 JB |
851 | if (ret) |
852 | return ret; | |
853 | ||
854 | switch (status) { | |
855 | case ADD_STA_SUCCESS: | |
856 | IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", | |
857 | start ? "start" : "stopp"); | |
858 | break; | |
859 | case ADD_STA_IMMEDIATE_BA_FAILURE: | |
860 | IWL_WARN(mvm, "RX BA Session refused by fw\n"); | |
861 | ret = -ENOSPC; | |
862 | break; | |
863 | default: | |
864 | ret = -EIO; | |
865 | IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", | |
866 | start ? "start" : "stopp", status); | |
867 | break; | |
868 | } | |
869 | ||
113a0447 EG |
870 | if (!ret) { |
871 | if (start) | |
872 | mvm->rx_ba_sessions++; | |
873 | else if (mvm->rx_ba_sessions > 0) | |
874 | /* check that restart flow didn't zero the counter */ | |
875 | mvm->rx_ba_sessions--; | |
876 | } | |
877 | ||
8ca151b5 JB |
878 | return ret; |
879 | } | |
880 | ||
881 | static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
882 | int tid, u8 queue, bool start) | |
883 | { | |
9d8ce6af | 884 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 885 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
886 | int ret; |
887 | u32 status; | |
888 | ||
889 | lockdep_assert_held(&mvm->mutex); | |
890 | ||
891 | if (start) { | |
892 | mvm_sta->tfd_queue_msk |= BIT(queue); | |
893 | mvm_sta->tid_disable_agg &= ~BIT(tid); | |
894 | } else { | |
895 | mvm_sta->tfd_queue_msk &= ~BIT(queue); | |
896 | mvm_sta->tid_disable_agg |= BIT(tid); | |
897 | } | |
898 | ||
899 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); | |
900 | cmd.sta_id = mvm_sta->sta_id; | |
901 | cmd.add_modify = STA_MODE_MODIFY; | |
902 | cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; | |
903 | cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
904 | cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); | |
905 | ||
906 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
907 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
908 | &cmd, &status); | |
8ca151b5 JB |
909 | if (ret) |
910 | return ret; | |
911 | ||
912 | switch (status) { | |
913 | case ADD_STA_SUCCESS: | |
914 | break; | |
915 | default: | |
916 | ret = -EIO; | |
917 | IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", | |
918 | start ? "start" : "stopp", status); | |
919 | break; | |
920 | } | |
921 | ||
922 | return ret; | |
923 | } | |
924 | ||
b797e3fb | 925 | const u8 tid_to_mac80211_ac[] = { |
8ca151b5 JB |
926 | IEEE80211_AC_BE, |
927 | IEEE80211_AC_BK, | |
928 | IEEE80211_AC_BK, | |
929 | IEEE80211_AC_BE, | |
930 | IEEE80211_AC_VI, | |
931 | IEEE80211_AC_VI, | |
932 | IEEE80211_AC_VO, | |
933 | IEEE80211_AC_VO, | |
934 | }; | |
935 | ||
3e56eadf JB |
936 | static const u8 tid_to_ucode_ac[] = { |
937 | AC_BE, | |
938 | AC_BK, | |
939 | AC_BK, | |
940 | AC_BE, | |
941 | AC_VI, | |
942 | AC_VI, | |
943 | AC_VO, | |
944 | AC_VO, | |
945 | }; | |
946 | ||
8ca151b5 JB |
947 | int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
948 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) | |
949 | { | |
5b577a90 | 950 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
951 | struct iwl_mvm_tid_data *tid_data; |
952 | int txq_id; | |
4ecafae9 | 953 | int ret; |
8ca151b5 JB |
954 | |
955 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
956 | return -EINVAL; | |
957 | ||
958 | if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { | |
959 | IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", | |
960 | mvmsta->tid_data[tid].state); | |
961 | return -ENXIO; | |
962 | } | |
963 | ||
964 | lockdep_assert_held(&mvm->mutex); | |
965 | ||
b2492501 AN |
966 | spin_lock_bh(&mvmsta->lock); |
967 | ||
968 | /* possible race condition - we entered D0i3 while starting agg */ | |
969 | if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { | |
970 | spin_unlock_bh(&mvmsta->lock); | |
971 | IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); | |
972 | return -EIO; | |
973 | } | |
974 | ||
4ecafae9 LK |
975 | spin_lock_bh(&mvm->queue_info_lock); |
976 | ||
977 | txq_id = iwl_mvm_find_free_queue(mvm, mvm->first_agg_queue, | |
978 | mvm->last_agg_queue); | |
979 | if (txq_id < 0) { | |
980 | ret = txq_id; | |
981 | spin_unlock_bh(&mvm->queue_info_lock); | |
982 | IWL_ERR(mvm, "Failed to allocate agg queue\n"); | |
983 | goto release_locks; | |
984 | } | |
985 | mvm->queue_info[txq_id].setup_reserved = true; | |
986 | spin_unlock_bh(&mvm->queue_info_lock); | |
8ca151b5 | 987 | |
8ca151b5 | 988 | tid_data = &mvmsta->tid_data[tid]; |
9a886586 | 989 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
990 | tid_data->txq_id = txq_id; |
991 | *ssn = tid_data->ssn; | |
992 | ||
993 | IWL_DEBUG_TX_QUEUES(mvm, | |
994 | "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", | |
995 | mvmsta->sta_id, tid, txq_id, tid_data->ssn, | |
996 | tid_data->next_reclaimed); | |
997 | ||
998 | if (tid_data->ssn == tid_data->next_reclaimed) { | |
999 | tid_data->state = IWL_AGG_STARTING; | |
1000 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1001 | } else { | |
1002 | tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
1003 | } | |
1004 | ||
4ecafae9 LK |
1005 | ret = 0; |
1006 | ||
1007 | release_locks: | |
8ca151b5 JB |
1008 | spin_unlock_bh(&mvmsta->lock); |
1009 | ||
4ecafae9 | 1010 | return ret; |
8ca151b5 JB |
1011 | } |
1012 | ||
1013 | int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1014 | struct ieee80211_sta *sta, u16 tid, u8 buf_size) | |
1015 | { | |
5b577a90 | 1016 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 1017 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
5d42e7b2 EG |
1018 | unsigned int wdg_timeout = |
1019 | iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); | |
8ca151b5 JB |
1020 | int queue, fifo, ret; |
1021 | u16 ssn; | |
1022 | ||
efed6640 ES |
1023 | BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) |
1024 | != IWL_MAX_TID_COUNT); | |
1025 | ||
8ca151b5 JB |
1026 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); |
1027 | ||
1028 | spin_lock_bh(&mvmsta->lock); | |
1029 | ssn = tid_data->ssn; | |
1030 | queue = tid_data->txq_id; | |
1031 | tid_data->state = IWL_AGG_ON; | |
efed6640 | 1032 | mvmsta->agg_tids |= BIT(tid); |
8ca151b5 JB |
1033 | tid_data->ssn = 0xffff; |
1034 | spin_unlock_bh(&mvmsta->lock); | |
1035 | ||
3e56eadf | 1036 | fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; |
8ca151b5 | 1037 | |
4ecafae9 LK |
1038 | iwl_mvm_enable_agg_txq(mvm, queue, |
1039 | vif->hw_queue[tid_to_mac80211_ac[tid]], fifo, | |
1040 | mvmsta->sta_id, tid, buf_size, ssn, wdg_timeout); | |
fa7878e7 | 1041 | |
8ca151b5 JB |
1042 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); |
1043 | if (ret) | |
1044 | return -EIO; | |
1045 | ||
4ecafae9 LK |
1046 | /* No need to mark as reserved */ |
1047 | spin_lock_bh(&mvm->queue_info_lock); | |
1048 | mvm->queue_info[queue].setup_reserved = false; | |
1049 | spin_unlock_bh(&mvm->queue_info_lock); | |
1050 | ||
8ca151b5 JB |
1051 | /* |
1052 | * Even though in theory the peer could have different | |
1053 | * aggregation reorder buffer sizes for different sessions, | |
1054 | * our ucode doesn't allow for that and has a global limit | |
1055 | * for each station. Therefore, use the minimum of all the | |
1056 | * aggregation sessions and our default value. | |
1057 | */ | |
1058 | mvmsta->max_agg_bufsize = | |
1059 | min(mvmsta->max_agg_bufsize, buf_size); | |
1060 | mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; | |
1061 | ||
9ee718aa EL |
1062 | IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", |
1063 | sta->addr, tid); | |
1064 | ||
9e680946 | 1065 | return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); |
8ca151b5 JB |
1066 | } |
1067 | ||
1068 | int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1069 | struct ieee80211_sta *sta, u16 tid) | |
1070 | { | |
5b577a90 | 1071 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1072 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1073 | u16 txq_id; | |
1074 | int err; | |
1075 | ||
f9aa8dd3 EG |
1076 | |
1077 | /* | |
1078 | * If mac80211 is cleaning its state, then say that we finished since | |
1079 | * our state has been cleared anyway. | |
1080 | */ | |
1081 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
1082 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1083 | return 0; | |
1084 | } | |
1085 | ||
8ca151b5 JB |
1086 | spin_lock_bh(&mvmsta->lock); |
1087 | ||
1088 | txq_id = tid_data->txq_id; | |
1089 | ||
1090 | IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", | |
1091 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
1092 | ||
efed6640 ES |
1093 | mvmsta->agg_tids &= ~BIT(tid); |
1094 | ||
4ecafae9 LK |
1095 | /* No need to mark as reserved anymore */ |
1096 | spin_lock_bh(&mvm->queue_info_lock); | |
1097 | mvm->queue_info[txq_id].setup_reserved = false; | |
1098 | spin_unlock_bh(&mvm->queue_info_lock); | |
1099 | ||
8ca151b5 JB |
1100 | switch (tid_data->state) { |
1101 | case IWL_AGG_ON: | |
9a886586 | 1102 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1103 | |
1104 | IWL_DEBUG_TX_QUEUES(mvm, | |
1105 | "ssn = %d, next_recl = %d\n", | |
1106 | tid_data->ssn, tid_data->next_reclaimed); | |
1107 | ||
1108 | /* There are still packets for this RA / TID in the HW */ | |
1109 | if (tid_data->ssn != tid_data->next_reclaimed) { | |
1110 | tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; | |
1111 | err = 0; | |
1112 | break; | |
1113 | } | |
1114 | ||
1115 | tid_data->ssn = 0xffff; | |
f7f89e7b | 1116 | tid_data->state = IWL_AGG_OFF; |
f7f89e7b JB |
1117 | spin_unlock_bh(&mvmsta->lock); |
1118 | ||
1119 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1120 | ||
1121 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); | |
1122 | ||
4ecafae9 LK |
1123 | iwl_mvm_disable_txq(mvm, txq_id, |
1124 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1125 | 0); | |
f7f89e7b | 1126 | return 0; |
8ca151b5 JB |
1127 | case IWL_AGG_STARTING: |
1128 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
1129 | /* | |
1130 | * The agg session has been stopped before it was set up. This | |
1131 | * can happen when the AddBA timer times out for example. | |
1132 | */ | |
1133 | ||
1134 | /* No barriers since we are under mutex */ | |
1135 | lockdep_assert_held(&mvm->mutex); | |
8ca151b5 JB |
1136 | |
1137 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1138 | tid_data->state = IWL_AGG_OFF; | |
1139 | err = 0; | |
1140 | break; | |
1141 | default: | |
1142 | IWL_ERR(mvm, | |
1143 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
1144 | mvmsta->sta_id, tid, tid_data->state); | |
1145 | IWL_ERR(mvm, | |
1146 | "\ttid_data->txq_id = %d\n", tid_data->txq_id); | |
1147 | err = -EINVAL; | |
1148 | } | |
1149 | ||
1150 | spin_unlock_bh(&mvmsta->lock); | |
1151 | ||
1152 | return err; | |
1153 | } | |
1154 | ||
e3d9e7ce EG |
1155 | int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1156 | struct ieee80211_sta *sta, u16 tid) | |
1157 | { | |
5b577a90 | 1158 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
e3d9e7ce EG |
1159 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1160 | u16 txq_id; | |
b6658ff8 | 1161 | enum iwl_mvm_agg_state old_state; |
e3d9e7ce EG |
1162 | |
1163 | /* | |
1164 | * First set the agg state to OFF to avoid calling | |
1165 | * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. | |
1166 | */ | |
1167 | spin_lock_bh(&mvmsta->lock); | |
1168 | txq_id = tid_data->txq_id; | |
1169 | IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", | |
1170 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
b6658ff8 | 1171 | old_state = tid_data->state; |
e3d9e7ce | 1172 | tid_data->state = IWL_AGG_OFF; |
efed6640 | 1173 | mvmsta->agg_tids &= ~BIT(tid); |
e3d9e7ce EG |
1174 | spin_unlock_bh(&mvmsta->lock); |
1175 | ||
4ecafae9 LK |
1176 | /* No need to mark as reserved */ |
1177 | spin_lock_bh(&mvm->queue_info_lock); | |
1178 | mvm->queue_info[txq_id].setup_reserved = false; | |
1179 | spin_unlock_bh(&mvm->queue_info_lock); | |
1180 | ||
b6658ff8 | 1181 | if (old_state >= IWL_AGG_ON) { |
fe92e32a | 1182 | iwl_mvm_drain_sta(mvm, mvmsta, true); |
5888a40c | 1183 | if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) |
b6658ff8 | 1184 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); |
fe92e32a EG |
1185 | iwl_trans_wait_tx_queue_empty(mvm->trans, |
1186 | mvmsta->tfd_queue_msk); | |
1187 | iwl_mvm_drain_sta(mvm, mvmsta, false); | |
b6658ff8 | 1188 | |
f7f89e7b JB |
1189 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); |
1190 | ||
4ecafae9 LK |
1191 | iwl_mvm_disable_txq(mvm, tid_data->txq_id, |
1192 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1193 | 0); | |
b6658ff8 | 1194 | } |
e3d9e7ce | 1195 | |
e3d9e7ce EG |
1196 | return 0; |
1197 | } | |
1198 | ||
8ca151b5 JB |
1199 | static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) |
1200 | { | |
2dc2a15e | 1201 | int i, max = -1, max_offs = -1; |
8ca151b5 JB |
1202 | |
1203 | lockdep_assert_held(&mvm->mutex); | |
1204 | ||
2dc2a15e JB |
1205 | /* Pick the unused key offset with the highest 'deleted' |
1206 | * counter. Every time a key is deleted, all the counters | |
1207 | * are incremented and the one that was just deleted is | |
1208 | * reset to zero. Thus, the highest counter is the one | |
1209 | * that was deleted longest ago. Pick that one. | |
1210 | */ | |
1211 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1212 | if (test_bit(i, mvm->fw_key_table)) | |
1213 | continue; | |
1214 | if (mvm->fw_key_deleted[i] > max) { | |
1215 | max = mvm->fw_key_deleted[i]; | |
1216 | max_offs = i; | |
1217 | } | |
1218 | } | |
8ca151b5 | 1219 | |
2dc2a15e | 1220 | if (max_offs < 0) |
8ca151b5 JB |
1221 | return STA_KEY_IDX_INVALID; |
1222 | ||
2dc2a15e | 1223 | return max_offs; |
8ca151b5 JB |
1224 | } |
1225 | ||
5f7a1847 JB |
1226 | static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, |
1227 | struct ieee80211_vif *vif, | |
1228 | struct ieee80211_sta *sta) | |
8ca151b5 | 1229 | { |
5b530e95 | 1230 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 | 1231 | |
5f7a1847 JB |
1232 | if (sta) |
1233 | return iwl_mvm_sta_from_mac80211(sta); | |
8ca151b5 JB |
1234 | |
1235 | /* | |
1236 | * The device expects GTKs for station interfaces to be | |
1237 | * installed as GTKs for the AP station. If we have no | |
1238 | * station ID, then use AP's station ID. | |
1239 | */ | |
1240 | if (vif->type == NL80211_IFTYPE_STATION && | |
9513c5e1 AA |
1241 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { |
1242 | u8 sta_id = mvmvif->ap_sta_id; | |
1243 | ||
45854360 JB |
1244 | sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], |
1245 | lockdep_is_held(&mvm->mutex)); | |
9513c5e1 AA |
1246 | /* |
1247 | * It is possible that the 'sta' parameter is NULL, | |
1248 | * for example when a GTK is removed - the sta_id will then | |
1249 | * be the AP ID, and no station was passed by mac80211. | |
1250 | */ | |
1251 | if (IS_ERR_OR_NULL(sta)) | |
5f7a1847 | 1252 | return NULL; |
9513c5e1 | 1253 | |
5f7a1847 | 1254 | return iwl_mvm_sta_from_mac80211(sta); |
9513c5e1 | 1255 | } |
8ca151b5 | 1256 | |
5f7a1847 | 1257 | return NULL; |
8ca151b5 JB |
1258 | } |
1259 | ||
1260 | static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, | |
1261 | struct iwl_mvm_sta *mvm_sta, | |
ba3943b0 | 1262 | struct ieee80211_key_conf *keyconf, bool mcast, |
d6ee54a9 LC |
1263 | u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, |
1264 | u8 key_offset) | |
8ca151b5 | 1265 | { |
5a258aae | 1266 | struct iwl_mvm_add_sta_key_cmd cmd = {}; |
f9dc0004 | 1267 | __le16 key_flags; |
79920749 JB |
1268 | int ret; |
1269 | u32 status; | |
8ca151b5 JB |
1270 | u16 keyidx; |
1271 | int i; | |
2f6319d1 | 1272 | u8 sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1273 | |
1274 | keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1275 | STA_KEY_FLG_KEYID_MSK; | |
1276 | key_flags = cpu_to_le16(keyidx); | |
1277 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); | |
1278 | ||
1279 | switch (keyconf->cipher) { | |
1280 | case WLAN_CIPHER_SUITE_TKIP: | |
1281 | key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); | |
5a258aae | 1282 | cmd.tkip_rx_tsc_byte2 = tkip_iv32; |
8ca151b5 | 1283 | for (i = 0; i < 5; i++) |
5a258aae MS |
1284 | cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); |
1285 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1286 | break; |
1287 | case WLAN_CIPHER_SUITE_CCMP: | |
1288 | key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); | |
5a258aae | 1289 | memcpy(cmd.key, keyconf->key, keyconf->keylen); |
8ca151b5 | 1290 | break; |
ba3943b0 JB |
1291 | case WLAN_CIPHER_SUITE_WEP104: |
1292 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); | |
aa0cb08b | 1293 | /* fall through */ |
ba3943b0 JB |
1294 | case WLAN_CIPHER_SUITE_WEP40: |
1295 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); | |
1296 | memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); | |
1297 | break; | |
8ca151b5 | 1298 | default: |
e36e5433 MS |
1299 | key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); |
1300 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1301 | } |
1302 | ||
ba3943b0 | 1303 | if (mcast) |
8ca151b5 JB |
1304 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1305 | ||
d6ee54a9 | 1306 | cmd.key_offset = key_offset; |
5a258aae | 1307 | cmd.key_flags = key_flags; |
8ca151b5 JB |
1308 | cmd.sta_id = sta_id; |
1309 | ||
1310 | status = ADD_STA_SUCCESS; | |
a1022927 | 1311 | if (cmd_flags & CMD_ASYNC) |
f9dc0004 EG |
1312 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, |
1313 | sizeof(cmd), &cmd); | |
a1022927 EG |
1314 | else |
1315 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1316 | &cmd, &status); | |
8ca151b5 JB |
1317 | |
1318 | switch (status) { | |
1319 | case ADD_STA_SUCCESS: | |
1320 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); | |
1321 | break; | |
1322 | default: | |
1323 | ret = -EIO; | |
1324 | IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); | |
1325 | break; | |
1326 | } | |
1327 | ||
1328 | return ret; | |
1329 | } | |
1330 | ||
1331 | static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, | |
1332 | struct ieee80211_key_conf *keyconf, | |
1333 | u8 sta_id, bool remove_key) | |
1334 | { | |
1335 | struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; | |
1336 | ||
1337 | /* verify the key details match the required command's expectations */ | |
1338 | if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || | |
1339 | (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || | |
1340 | (keyconf->keyidx != 4 && keyconf->keyidx != 5))) | |
1341 | return -EINVAL; | |
1342 | ||
1343 | igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); | |
1344 | igtk_cmd.sta_id = cpu_to_le32(sta_id); | |
1345 | ||
1346 | if (remove_key) { | |
1347 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); | |
1348 | } else { | |
1349 | struct ieee80211_key_seq seq; | |
1350 | const u8 *pn; | |
1351 | ||
1352 | memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1353 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); |
1354 | pn = seq.aes_cmac.pn; | |
1355 | igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | | |
1356 | ((u64) pn[4] << 8) | | |
1357 | ((u64) pn[3] << 16) | | |
1358 | ((u64) pn[2] << 24) | | |
1359 | ((u64) pn[1] << 32) | | |
1360 | ((u64) pn[0] << 40)); | |
1361 | } | |
1362 | ||
1363 | IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", | |
1364 | remove_key ? "removing" : "installing", | |
1365 | igtk_cmd.sta_id); | |
1366 | ||
a1022927 | 1367 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
8ca151b5 JB |
1368 | sizeof(igtk_cmd), &igtk_cmd); |
1369 | } | |
1370 | ||
1371 | ||
1372 | static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, | |
1373 | struct ieee80211_vif *vif, | |
1374 | struct ieee80211_sta *sta) | |
1375 | { | |
5b530e95 | 1376 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1377 | |
1378 | if (sta) | |
1379 | return sta->addr; | |
1380 | ||
1381 | if (vif->type == NL80211_IFTYPE_STATION && | |
1382 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { | |
1383 | u8 sta_id = mvmvif->ap_sta_id; | |
1384 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1385 | lockdep_is_held(&mvm->mutex)); | |
1386 | return sta->addr; | |
1387 | } | |
1388 | ||
1389 | ||
1390 | return NULL; | |
1391 | } | |
1392 | ||
2f6319d1 JB |
1393 | static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1394 | struct ieee80211_vif *vif, | |
1395 | struct ieee80211_sta *sta, | |
ba3943b0 | 1396 | struct ieee80211_key_conf *keyconf, |
d6ee54a9 | 1397 | u8 key_offset, |
ba3943b0 | 1398 | bool mcast) |
2f6319d1 JB |
1399 | { |
1400 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1401 | int ret; | |
1402 | const u8 *addr; | |
1403 | struct ieee80211_key_seq seq; | |
1404 | u16 p1k[5]; | |
1405 | ||
1406 | switch (keyconf->cipher) { | |
1407 | case WLAN_CIPHER_SUITE_TKIP: | |
1408 | addr = iwl_mvm_get_mac_addr(mvm, vif, sta); | |
1409 | /* get phase 1 key from mac80211 */ | |
1410 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1411 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
ba3943b0 | 1412 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1413 | seq.tkip.iv32, p1k, 0, key_offset); |
2f6319d1 JB |
1414 | break; |
1415 | case WLAN_CIPHER_SUITE_CCMP: | |
ba3943b0 JB |
1416 | case WLAN_CIPHER_SUITE_WEP40: |
1417 | case WLAN_CIPHER_SUITE_WEP104: | |
1418 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, | |
d6ee54a9 | 1419 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
1420 | break; |
1421 | default: | |
ba3943b0 | 1422 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1423 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
1424 | } |
1425 | ||
1426 | return ret; | |
1427 | } | |
1428 | ||
1429 | static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, | |
ba3943b0 JB |
1430 | struct ieee80211_key_conf *keyconf, |
1431 | bool mcast) | |
2f6319d1 JB |
1432 | { |
1433 | struct iwl_mvm_add_sta_key_cmd cmd = {}; | |
1434 | __le16 key_flags; | |
1435 | int ret; | |
1436 | u32 status; | |
1437 | ||
1438 | key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1439 | STA_KEY_FLG_KEYID_MSK); | |
1440 | key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); | |
1441 | key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); | |
1442 | ||
ba3943b0 | 1443 | if (mcast) |
2f6319d1 JB |
1444 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1445 | ||
1446 | cmd.key_flags = key_flags; | |
1447 | cmd.key_offset = keyconf->hw_key_idx; | |
1448 | cmd.sta_id = sta_id; | |
1449 | ||
1450 | status = ADD_STA_SUCCESS; | |
1451 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1452 | &cmd, &status); | |
1453 | ||
1454 | switch (status) { | |
1455 | case ADD_STA_SUCCESS: | |
1456 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); | |
1457 | break; | |
1458 | default: | |
1459 | ret = -EIO; | |
1460 | IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); | |
1461 | break; | |
1462 | } | |
1463 | ||
1464 | return ret; | |
1465 | } | |
1466 | ||
8ca151b5 JB |
1467 | int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1468 | struct ieee80211_vif *vif, | |
1469 | struct ieee80211_sta *sta, | |
1470 | struct ieee80211_key_conf *keyconf, | |
d6ee54a9 | 1471 | u8 key_offset) |
8ca151b5 | 1472 | { |
ba3943b0 | 1473 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 | 1474 | struct iwl_mvm_sta *mvm_sta; |
2f6319d1 | 1475 | u8 sta_id; |
8ca151b5 | 1476 | int ret; |
11828dbc | 1477 | static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; |
8ca151b5 JB |
1478 | |
1479 | lockdep_assert_held(&mvm->mutex); | |
1480 | ||
1481 | /* Get the station id from the mvm local station table */ | |
5f7a1847 JB |
1482 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
1483 | if (!mvm_sta) { | |
1484 | IWL_ERR(mvm, "Failed to find station\n"); | |
8ca151b5 JB |
1485 | return -EINVAL; |
1486 | } | |
5f7a1847 | 1487 | sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1488 | |
1489 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { | |
1490 | ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); | |
1491 | goto end; | |
1492 | } | |
1493 | ||
1494 | /* | |
1495 | * It is possible that the 'sta' parameter is NULL, and thus | |
1496 | * there is a need to retrieve the sta from the local station table. | |
1497 | */ | |
1498 | if (!sta) { | |
1499 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1500 | lockdep_is_held(&mvm->mutex)); | |
1501 | if (IS_ERR_OR_NULL(sta)) { | |
1502 | IWL_ERR(mvm, "Invalid station id\n"); | |
1503 | return -EINVAL; | |
1504 | } | |
1505 | } | |
1506 | ||
2f6319d1 | 1507 | if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
8ca151b5 JB |
1508 | return -EINVAL; |
1509 | ||
d6ee54a9 LC |
1510 | /* If the key_offset is not pre-assigned, we need to find a |
1511 | * new offset to use. In normal cases, the offset is not | |
1512 | * pre-assigned, but during HW_RESTART we want to reuse the | |
1513 | * same indices, so we pass them when this function is called. | |
1514 | * | |
1515 | * In D3 entry, we need to hardcoded the indices (because the | |
1516 | * firmware hardcodes the PTK offset to 0). In this case, we | |
1517 | * need to make sure we don't overwrite the hw_key_idx in the | |
1518 | * keyconf structure, because otherwise we cannot configure | |
1519 | * the original ones back when resuming. | |
1520 | */ | |
1521 | if (key_offset == STA_KEY_IDX_INVALID) { | |
1522 | key_offset = iwl_mvm_set_fw_key_idx(mvm); | |
1523 | if (key_offset == STA_KEY_IDX_INVALID) | |
8ca151b5 | 1524 | return -ENOSPC; |
d6ee54a9 | 1525 | keyconf->hw_key_idx = key_offset; |
8ca151b5 JB |
1526 | } |
1527 | ||
d6ee54a9 | 1528 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); |
9c3deeb5 | 1529 | if (ret) |
ba3943b0 | 1530 | goto end; |
ba3943b0 JB |
1531 | |
1532 | /* | |
1533 | * For WEP, the same key is used for multicast and unicast. Upload it | |
1534 | * again, using the same key offset, and now pointing the other one | |
1535 | * to the same key slot (offset). | |
1536 | * If this fails, remove the original as well. | |
1537 | */ | |
1538 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1539 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { | |
d6ee54a9 LC |
1540 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, |
1541 | key_offset, !mcast); | |
ba3943b0 | 1542 | if (ret) { |
ba3943b0 | 1543 | __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
9c3deeb5 | 1544 | goto end; |
ba3943b0 JB |
1545 | } |
1546 | } | |
8ca151b5 | 1547 | |
9c3deeb5 LC |
1548 | __set_bit(key_offset, mvm->fw_key_table); |
1549 | ||
8ca151b5 JB |
1550 | end: |
1551 | IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
1552 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, | |
11828dbc | 1553 | sta ? sta->addr : zero_addr, ret); |
8ca151b5 JB |
1554 | return ret; |
1555 | } | |
1556 | ||
1557 | int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, | |
1558 | struct ieee80211_vif *vif, | |
1559 | struct ieee80211_sta *sta, | |
1560 | struct ieee80211_key_conf *keyconf) | |
1561 | { | |
ba3943b0 | 1562 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 JB |
1563 | struct iwl_mvm_sta *mvm_sta; |
1564 | u8 sta_id = IWL_MVM_STATION_COUNT; | |
2dc2a15e | 1565 | int ret, i; |
8ca151b5 JB |
1566 | |
1567 | lockdep_assert_held(&mvm->mutex); | |
1568 | ||
5f7a1847 JB |
1569 | /* Get the station from the mvm local station table */ |
1570 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); | |
8ca151b5 JB |
1571 | |
1572 | IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", | |
1573 | keyconf->keyidx, sta_id); | |
1574 | ||
1575 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) | |
1576 | return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); | |
1577 | ||
2f6319d1 | 1578 | if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { |
8ca151b5 JB |
1579 | IWL_ERR(mvm, "offset %d not used in fw key table.\n", |
1580 | keyconf->hw_key_idx); | |
1581 | return -ENOENT; | |
1582 | } | |
1583 | ||
2dc2a15e JB |
1584 | /* track which key was deleted last */ |
1585 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1586 | if (mvm->fw_key_deleted[i] < U8_MAX) | |
1587 | mvm->fw_key_deleted[i]++; | |
1588 | } | |
1589 | mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; | |
1590 | ||
5f7a1847 | 1591 | if (!mvm_sta) { |
8ca151b5 JB |
1592 | IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); |
1593 | return 0; | |
1594 | } | |
1595 | ||
5f7a1847 JB |
1596 | sta_id = mvm_sta->sta_id; |
1597 | ||
ba3943b0 JB |
1598 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
1599 | if (ret) | |
1600 | return ret; | |
1601 | ||
1602 | /* delete WEP key twice to get rid of (now useless) offset */ | |
1603 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1604 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) | |
1605 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); | |
1606 | ||
1607 | return ret; | |
8ca151b5 JB |
1608 | } |
1609 | ||
1610 | void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, | |
1611 | struct ieee80211_vif *vif, | |
1612 | struct ieee80211_key_conf *keyconf, | |
1613 | struct ieee80211_sta *sta, u32 iv32, | |
1614 | u16 *phase1key) | |
1615 | { | |
c3eb536a | 1616 | struct iwl_mvm_sta *mvm_sta; |
ba3943b0 | 1617 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 1618 | |
c3eb536a BL |
1619 | rcu_read_lock(); |
1620 | ||
5f7a1847 JB |
1621 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
1622 | if (WARN_ON_ONCE(!mvm_sta)) | |
45854360 | 1623 | goto unlock; |
ba3943b0 | 1624 | iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1625 | iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); |
45854360 JB |
1626 | |
1627 | unlock: | |
c3eb536a | 1628 | rcu_read_unlock(); |
8ca151b5 JB |
1629 | } |
1630 | ||
9cc40712 JB |
1631 | void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, |
1632 | struct ieee80211_sta *sta) | |
8ca151b5 | 1633 | { |
5b577a90 | 1634 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1635 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1636 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1637 | .sta_id = mvmsta->sta_id, |
5af01772 | 1638 | .station_flags_msk = cpu_to_le32(STA_FLG_PS), |
9cc40712 | 1639 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 JB |
1640 | }; |
1641 | int ret; | |
1642 | ||
f9dc0004 | 1643 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); |
8ca151b5 JB |
1644 | if (ret) |
1645 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1646 | } | |
1647 | ||
9cc40712 JB |
1648 | void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, |
1649 | struct ieee80211_sta *sta, | |
8ca151b5 | 1650 | enum ieee80211_frame_release_type reason, |
3e56eadf JB |
1651 | u16 cnt, u16 tids, bool more_data, |
1652 | bool agg) | |
8ca151b5 | 1653 | { |
5b577a90 | 1654 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1655 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1656 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1657 | .sta_id = mvmsta->sta_id, |
8ca151b5 JB |
1658 | .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, |
1659 | .sleep_tx_count = cpu_to_le16(cnt), | |
9cc40712 | 1660 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 | 1661 | }; |
3e56eadf JB |
1662 | int tid, ret; |
1663 | unsigned long _tids = tids; | |
1664 | ||
1665 | /* convert TIDs to ACs - we don't support TSPEC so that's OK | |
1666 | * Note that this field is reserved and unused by firmware not | |
1667 | * supporting GO uAPSD, so it's safe to always do this. | |
1668 | */ | |
1669 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) | |
1670 | cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); | |
1671 | ||
1672 | /* If we're releasing frames from aggregation queues then check if the | |
1673 | * all queues combined that we're releasing frames from have | |
1674 | * - more frames than the service period, in which case more_data | |
1675 | * needs to be set | |
1676 | * - fewer than 'cnt' frames, in which case we need to adjust the | |
1677 | * firmware command (but do that unconditionally) | |
1678 | */ | |
1679 | if (agg) { | |
1680 | int remaining = cnt; | |
36be0eb6 | 1681 | int sleep_tx_count; |
3e56eadf JB |
1682 | |
1683 | spin_lock_bh(&mvmsta->lock); | |
1684 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { | |
1685 | struct iwl_mvm_tid_data *tid_data; | |
1686 | u16 n_queued; | |
1687 | ||
1688 | tid_data = &mvmsta->tid_data[tid]; | |
1689 | if (WARN(tid_data->state != IWL_AGG_ON && | |
1690 | tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, | |
1691 | "TID %d state is %d\n", | |
1692 | tid, tid_data->state)) { | |
1693 | spin_unlock_bh(&mvmsta->lock); | |
1694 | ieee80211_sta_eosp(sta); | |
1695 | return; | |
1696 | } | |
1697 | ||
1698 | n_queued = iwl_mvm_tid_queued(tid_data); | |
1699 | if (n_queued > remaining) { | |
1700 | more_data = true; | |
1701 | remaining = 0; | |
1702 | break; | |
1703 | } | |
1704 | remaining -= n_queued; | |
1705 | } | |
36be0eb6 EG |
1706 | sleep_tx_count = cnt - remaining; |
1707 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) | |
1708 | mvmsta->sleep_tx_count = sleep_tx_count; | |
3e56eadf JB |
1709 | spin_unlock_bh(&mvmsta->lock); |
1710 | ||
36be0eb6 | 1711 | cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); |
3e56eadf JB |
1712 | if (WARN_ON(cnt - remaining == 0)) { |
1713 | ieee80211_sta_eosp(sta); | |
1714 | return; | |
1715 | } | |
1716 | } | |
1717 | ||
1718 | /* Note: this is ignored by firmware not supporting GO uAPSD */ | |
1719 | if (more_data) | |
1720 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); | |
1721 | ||
1722 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { | |
1723 | mvmsta->next_status_eosp = true; | |
1724 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); | |
1725 | } else { | |
1726 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); | |
1727 | } | |
8ca151b5 | 1728 | |
156f92f2 EG |
1729 | /* block the Tx queues until the FW updated the sleep Tx count */ |
1730 | iwl_trans_block_txq_ptrs(mvm->trans, true); | |
1731 | ||
1732 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, | |
1733 | CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, | |
1734 | sizeof(cmd), &cmd); | |
8ca151b5 JB |
1735 | if (ret) |
1736 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1737 | } | |
3e56eadf | 1738 | |
0416841d JB |
1739 | void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, |
1740 | struct iwl_rx_cmd_buffer *rxb) | |
3e56eadf JB |
1741 | { |
1742 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1743 | struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; | |
1744 | struct ieee80211_sta *sta; | |
1745 | u32 sta_id = le32_to_cpu(notif->sta_id); | |
1746 | ||
1747 | if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) | |
0416841d | 1748 | return; |
3e56eadf JB |
1749 | |
1750 | rcu_read_lock(); | |
1751 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1752 | if (!IS_ERR_OR_NULL(sta)) | |
1753 | ieee80211_sta_eosp(sta); | |
1754 | rcu_read_unlock(); | |
3e56eadf | 1755 | } |
09b0ce1a AO |
1756 | |
1757 | void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, | |
1758 | struct iwl_mvm_sta *mvmsta, bool disable) | |
1759 | { | |
1760 | struct iwl_mvm_add_sta_cmd cmd = { | |
1761 | .add_modify = STA_MODE_MODIFY, | |
1762 | .sta_id = mvmsta->sta_id, | |
1763 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
1764 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
1765 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), | |
1766 | }; | |
1767 | int ret; | |
1768 | ||
09b0ce1a AO |
1769 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); |
1770 | if (ret) | |
1771 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1772 | } | |
003e5236 AO |
1773 | |
1774 | void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, | |
1775 | struct ieee80211_sta *sta, | |
1776 | bool disable) | |
1777 | { | |
1778 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1779 | ||
1780 | spin_lock_bh(&mvm_sta->lock); | |
1781 | ||
1782 | if (mvm_sta->disable_tx == disable) { | |
1783 | spin_unlock_bh(&mvm_sta->lock); | |
1784 | return; | |
1785 | } | |
1786 | ||
1787 | mvm_sta->disable_tx = disable; | |
1788 | ||
1789 | /* | |
0d365ae5 SS |
1790 | * Tell mac80211 to start/stop queuing tx for this station, |
1791 | * but don't stop queuing if there are still pending frames | |
003e5236 AO |
1792 | * for this station. |
1793 | */ | |
1794 | if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) | |
1795 | ieee80211_sta_block_awake(mvm->hw, sta, disable); | |
1796 | ||
1797 | iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); | |
1798 | ||
1799 | spin_unlock_bh(&mvm_sta->lock); | |
1800 | } | |
1801 | ||
1802 | void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, | |
1803 | struct iwl_mvm_vif *mvmvif, | |
1804 | bool disable) | |
1805 | { | |
1806 | struct ieee80211_sta *sta; | |
1807 | struct iwl_mvm_sta *mvm_sta; | |
1808 | int i; | |
1809 | ||
1810 | lockdep_assert_held(&mvm->mutex); | |
1811 | ||
1812 | /* Block/unblock all the stations of the given mvmvif */ | |
1813 | for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { | |
1814 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], | |
1815 | lockdep_is_held(&mvm->mutex)); | |
1816 | if (IS_ERR_OR_NULL(sta)) | |
1817 | continue; | |
1818 | ||
1819 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1820 | if (mvm_sta->mac_id_n_color != | |
1821 | FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) | |
1822 | continue; | |
1823 | ||
1824 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); | |
1825 | } | |
1826 | } | |
dc88b4ba LC |
1827 | |
1828 | void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1829 | { | |
1830 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1831 | struct iwl_mvm_sta *mvmsta; | |
1832 | ||
1833 | rcu_read_lock(); | |
1834 | ||
1835 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); | |
1836 | ||
1837 | if (!WARN_ON(!mvmsta)) | |
1838 | iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); | |
1839 | ||
1840 | rcu_read_unlock(); | |
1841 | } |