]>
Commit | Line | Data |
---|---|---|
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 | ||
94939080 GG |
281 | if (vif->type == NL80211_IFTYPE_AP) { |
282 | mvmvif->ap_assoc_sta_count++; | |
f82c8339 | 283 | iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); |
94939080 GG |
284 | } |
285 | ||
8ca151b5 JB |
286 | spin_lock_init(&mvm_sta->lock); |
287 | ||
288 | mvm_sta->sta_id = sta_id; | |
289 | mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, | |
290 | mvmvif->color); | |
291 | mvm_sta->vif = vif; | |
292 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
9ee718aa EL |
293 | mvm_sta->tx_protection = 0; |
294 | mvm_sta->tt_tx_protection = false; | |
8ca151b5 JB |
295 | |
296 | /* HW restart, don't assume the memory has been zeroed */ | |
e3d4bc8c | 297 | atomic_set(&mvm->pending_frames[sta_id], 0); |
69191afe | 298 | mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ |
8ca151b5 | 299 | mvm_sta->tfd_queue_msk = 0; |
a0f6bf2a AN |
300 | |
301 | /* allocate new queues for a TDLS station */ | |
302 | if (sta->tdls) { | |
303 | ret = iwl_mvm_tdls_sta_init(mvm, sta); | |
304 | if (ret) | |
305 | return ret; | |
306 | } else { | |
307 | for (i = 0; i < IEEE80211_NUM_ACS; i++) | |
308 | if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) | |
309 | mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); | |
310 | } | |
8ca151b5 | 311 | |
6d9d32b8 JB |
312 | /* for HW restart - reset everything but the sequence number */ |
313 | for (i = 0; i < IWL_MAX_TID_COUNT; i++) { | |
314 | u16 seq = mvm_sta->tid_data[i].seq_number; | |
315 | memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); | |
316 | mvm_sta->tid_data[i].seq_number = seq; | |
317 | } | |
efed6640 | 318 | mvm_sta->agg_tids = 0; |
8ca151b5 | 319 | |
7a453973 | 320 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, false); |
8ca151b5 | 321 | if (ret) |
a0f6bf2a | 322 | goto err; |
8ca151b5 | 323 | |
9e848010 JB |
324 | if (vif->type == NL80211_IFTYPE_STATION) { |
325 | if (!sta->tdls) { | |
326 | WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); | |
327 | mvmvif->ap_sta_id = sta_id; | |
328 | } else { | |
329 | WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); | |
330 | } | |
331 | } | |
8ca151b5 JB |
332 | |
333 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); | |
334 | ||
335 | return 0; | |
a0f6bf2a AN |
336 | |
337 | err: | |
338 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
339 | return ret; | |
8ca151b5 JB |
340 | } |
341 | ||
7a453973 JB |
342 | int iwl_mvm_update_sta(struct iwl_mvm *mvm, |
343 | struct ieee80211_vif *vif, | |
344 | struct ieee80211_sta *sta) | |
345 | { | |
346 | return iwl_mvm_sta_send_to_fw(mvm, sta, true); | |
347 | } | |
348 | ||
8ca151b5 JB |
349 | int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, |
350 | bool drain) | |
351 | { | |
f9dc0004 | 352 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
353 | int ret; |
354 | u32 status; | |
355 | ||
356 | lockdep_assert_held(&mvm->mutex); | |
357 | ||
358 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
359 | cmd.sta_id = mvmsta->sta_id; | |
360 | cmd.add_modify = STA_MODE_MODIFY; | |
361 | cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; | |
362 | cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); | |
363 | ||
364 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
365 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
366 | &cmd, &status); | |
8ca151b5 JB |
367 | if (ret) |
368 | return ret; | |
369 | ||
370 | switch (status) { | |
371 | case ADD_STA_SUCCESS: | |
372 | IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", | |
373 | mvmsta->sta_id); | |
374 | break; | |
375 | default: | |
376 | ret = -EIO; | |
377 | IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", | |
378 | mvmsta->sta_id); | |
379 | break; | |
380 | } | |
381 | ||
382 | return ret; | |
383 | } | |
384 | ||
385 | /* | |
386 | * Remove a station from the FW table. Before sending the command to remove | |
387 | * the station validate that the station is indeed known to the driver (sanity | |
388 | * only). | |
389 | */ | |
390 | static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) | |
391 | { | |
392 | struct ieee80211_sta *sta; | |
393 | struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { | |
394 | .sta_id = sta_id, | |
395 | }; | |
396 | int ret; | |
397 | ||
398 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
399 | lockdep_is_held(&mvm->mutex)); | |
400 | ||
401 | /* Note: internal stations are marked as error values */ | |
402 | if (!sta) { | |
403 | IWL_ERR(mvm, "Invalid station id\n"); | |
404 | return -EINVAL; | |
405 | } | |
406 | ||
a1022927 | 407 | ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, |
8ca151b5 JB |
408 | sizeof(rm_sta_cmd), &rm_sta_cmd); |
409 | if (ret) { | |
410 | IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); | |
411 | return ret; | |
412 | } | |
413 | ||
414 | return 0; | |
415 | } | |
416 | ||
417 | void iwl_mvm_sta_drained_wk(struct work_struct *wk) | |
418 | { | |
419 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); | |
420 | u8 sta_id; | |
421 | ||
422 | /* | |
423 | * The mutex is needed because of the SYNC cmd, but not only: if the | |
424 | * work would run concurrently with iwl_mvm_rm_sta, it would run before | |
425 | * iwl_mvm_rm_sta sets the station as busy, and exit. Then | |
426 | * iwl_mvm_rm_sta would set the station as busy, and nobody will clean | |
427 | * that later. | |
428 | */ | |
429 | mutex_lock(&mvm->mutex); | |
430 | ||
431 | for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { | |
432 | int ret; | |
433 | struct ieee80211_sta *sta = | |
434 | rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
435 | lockdep_is_held(&mvm->mutex)); | |
436 | ||
1ddbbb0c JB |
437 | /* |
438 | * This station is in use or RCU-removed; the latter happens in | |
439 | * managed mode, where mac80211 removes the station before we | |
440 | * can remove it from firmware (we can only do that after the | |
441 | * MAC is marked unassociated), and possibly while the deauth | |
442 | * frame to disconnect from the AP is still queued. Then, the | |
443 | * station pointer is -ENOENT when the last skb is reclaimed. | |
444 | */ | |
445 | if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) | |
8ca151b5 JB |
446 | continue; |
447 | ||
448 | if (PTR_ERR(sta) == -EINVAL) { | |
449 | IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", | |
450 | sta_id); | |
451 | continue; | |
452 | } | |
453 | ||
454 | if (!sta) { | |
455 | IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", | |
456 | sta_id); | |
457 | continue; | |
458 | } | |
459 | ||
460 | WARN_ON(PTR_ERR(sta) != -EBUSY); | |
461 | /* This station was removed and we waited until it got drained, | |
462 | * we can now proceed and remove it. | |
463 | */ | |
464 | ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
465 | if (ret) { | |
466 | IWL_ERR(mvm, | |
467 | "Couldn't remove sta %d after it was drained\n", | |
468 | sta_id); | |
469 | continue; | |
470 | } | |
c531c771 | 471 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 | 472 | clear_bit(sta_id, mvm->sta_drained); |
a0f6bf2a AN |
473 | |
474 | if (mvm->tfd_drained[sta_id]) { | |
475 | unsigned long i, msk = mvm->tfd_drained[sta_id]; | |
476 | ||
a4ca3ed4 | 477 | for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) |
06ecdba3 AN |
478 | iwl_mvm_disable_txq(mvm, i, i, |
479 | IWL_MAX_TID_COUNT, 0); | |
a0f6bf2a AN |
480 | |
481 | mvm->tfd_drained[sta_id] = 0; | |
482 | IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", | |
483 | sta_id, msk); | |
484 | } | |
8ca151b5 JB |
485 | } |
486 | ||
487 | mutex_unlock(&mvm->mutex); | |
488 | } | |
489 | ||
490 | int iwl_mvm_rm_sta(struct iwl_mvm *mvm, | |
491 | struct ieee80211_vif *vif, | |
492 | struct ieee80211_sta *sta) | |
493 | { | |
494 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 495 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
496 | int ret; |
497 | ||
498 | lockdep_assert_held(&mvm->mutex); | |
499 | ||
500 | if (vif->type == NL80211_IFTYPE_STATION && | |
501 | mvmvif->ap_sta_id == mvm_sta->sta_id) { | |
fe92e32a EG |
502 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
503 | if (ret) | |
504 | return ret; | |
80d85655 | 505 | /* flush its queues here since we are freeing mvm_sta */ |
5888a40c | 506 | ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); |
fe92e32a EG |
507 | if (ret) |
508 | return ret; | |
509 | ret = iwl_trans_wait_tx_queue_empty(mvm->trans, | |
510 | mvm_sta->tfd_queue_msk); | |
511 | if (ret) | |
512 | return ret; | |
513 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); | |
80d85655 | 514 | |
8ca151b5 JB |
515 | /* if we are associated - we can't remove the AP STA now */ |
516 | if (vif->bss_conf.assoc) | |
517 | return ret; | |
518 | ||
519 | /* unassoc - go ahead - remove the AP STA now */ | |
520 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
37577fe2 EP |
521 | |
522 | /* clear d0i3_ap_sta_id if no longer relevant */ | |
523 | if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) | |
524 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
8ca151b5 JB |
525 | } |
526 | ||
1d3c3f63 AN |
527 | /* |
528 | * This shouldn't happen - the TDLS channel switch should be canceled | |
529 | * before the STA is removed. | |
530 | */ | |
531 | if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { | |
532 | mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; | |
533 | cancel_delayed_work(&mvm->tdls_cs.dwork); | |
534 | } | |
535 | ||
e3d4bc8c EG |
536 | /* |
537 | * Make sure that the tx response code sees the station as -EBUSY and | |
538 | * calls the drain worker. | |
539 | */ | |
540 | spin_lock_bh(&mvm_sta->lock); | |
8ca151b5 JB |
541 | /* |
542 | * There are frames pending on the AC queues for this station. | |
543 | * We need to wait until all the frames are drained... | |
544 | */ | |
e3d4bc8c | 545 | if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { |
8ca151b5 JB |
546 | rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], |
547 | ERR_PTR(-EBUSY)); | |
e3d4bc8c | 548 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
549 | |
550 | /* disable TDLS sta queues on drain complete */ | |
551 | if (sta->tdls) { | |
552 | mvm->tfd_drained[mvm_sta->sta_id] = | |
553 | mvm_sta->tfd_queue_msk; | |
554 | IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", | |
555 | mvm_sta->sta_id); | |
556 | } | |
557 | ||
e3d4bc8c | 558 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
8ca151b5 | 559 | } else { |
e3d4bc8c | 560 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
561 | |
562 | if (sta->tdls) | |
563 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
564 | ||
8ca151b5 | 565 | ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); |
c531c771 | 566 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); |
8ca151b5 JB |
567 | } |
568 | ||
569 | return ret; | |
570 | } | |
571 | ||
572 | int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, | |
573 | struct ieee80211_vif *vif, | |
574 | u8 sta_id) | |
575 | { | |
576 | int ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
577 | ||
578 | lockdep_assert_held(&mvm->mutex); | |
579 | ||
c531c771 | 580 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 JB |
581 | return ret; |
582 | } | |
583 | ||
0e39eb03 CRI |
584 | int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, |
585 | struct iwl_mvm_int_sta *sta, | |
586 | u32 qmask, enum nl80211_iftype iftype) | |
8ca151b5 JB |
587 | { |
588 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
b92e661b | 589 | sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); |
8ca151b5 JB |
590 | if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) |
591 | return -ENOSPC; | |
592 | } | |
593 | ||
594 | sta->tfd_queue_msk = qmask; | |
595 | ||
596 | /* put a non-NULL value so iterating over the stations won't stop */ | |
597 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); | |
598 | return 0; | |
599 | } | |
600 | ||
712b24ad JB |
601 | static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, |
602 | struct iwl_mvm_int_sta *sta) | |
8ca151b5 | 603 | { |
c531c771 | 604 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); |
8ca151b5 JB |
605 | memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); |
606 | sta->sta_id = IWL_MVM_STATION_COUNT; | |
607 | } | |
608 | ||
609 | static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, | |
610 | struct iwl_mvm_int_sta *sta, | |
611 | const u8 *addr, | |
612 | u16 mac_id, u16 color) | |
613 | { | |
f9dc0004 | 614 | struct iwl_mvm_add_sta_cmd cmd; |
8ca151b5 JB |
615 | int ret; |
616 | u32 status; | |
617 | ||
618 | lockdep_assert_held(&mvm->mutex); | |
619 | ||
f9dc0004 | 620 | memset(&cmd, 0, sizeof(cmd)); |
8ca151b5 JB |
621 | cmd.sta_id = sta->sta_id; |
622 | cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, | |
623 | color)); | |
624 | ||
625 | cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); | |
cf0cda19 | 626 | cmd.tid_disable_tx = cpu_to_le16(0xffff); |
8ca151b5 JB |
627 | |
628 | if (addr) | |
629 | memcpy(cmd.addr, addr, ETH_ALEN); | |
630 | ||
f9dc0004 EG |
631 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
632 | &cmd, &status); | |
8ca151b5 JB |
633 | if (ret) |
634 | return ret; | |
635 | ||
636 | switch (status) { | |
637 | case ADD_STA_SUCCESS: | |
638 | IWL_DEBUG_INFO(mvm, "Internal station added.\n"); | |
639 | return 0; | |
640 | default: | |
641 | ret = -EIO; | |
642 | IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", | |
643 | status); | |
644 | break; | |
645 | } | |
646 | return ret; | |
647 | } | |
648 | ||
649 | int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) | |
650 | { | |
4cf677fd EG |
651 | unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? |
652 | mvm->cfg->base_params->wd_timeout : | |
653 | IWL_WATCHDOG_DISABLED; | |
8ca151b5 JB |
654 | int ret; |
655 | ||
656 | lockdep_assert_held(&mvm->mutex); | |
657 | ||
7da91b0e | 658 | /* Map Aux queue to fifo - needs to happen before adding Aux station */ |
4ecafae9 | 659 | iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, |
5c1156ef | 660 | IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); |
7da91b0e AM |
661 | |
662 | /* Allocate aux station and assign to it the aux queue */ | |
663 | ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), | |
b92e661b | 664 | NL80211_IFTYPE_UNSPECIFIED); |
8ca151b5 JB |
665 | if (ret) |
666 | return ret; | |
667 | ||
668 | ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, | |
669 | MAC_INDEX_AUX, 0); | |
670 | ||
671 | if (ret) | |
672 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
673 | return ret; | |
674 | } | |
675 | ||
0e39eb03 CRI |
676 | int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
677 | { | |
678 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
679 | ||
680 | lockdep_assert_held(&mvm->mutex); | |
681 | return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, | |
682 | mvmvif->id, 0); | |
683 | } | |
684 | ||
685 | int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
686 | { | |
687 | int ret; | |
688 | ||
689 | lockdep_assert_held(&mvm->mutex); | |
690 | ||
691 | ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); | |
692 | if (ret) | |
693 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
694 | ||
695 | return ret; | |
696 | } | |
697 | ||
698 | void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) | |
699 | { | |
700 | iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); | |
701 | } | |
702 | ||
712b24ad JB |
703 | void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) |
704 | { | |
705 | lockdep_assert_held(&mvm->mutex); | |
706 | ||
707 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
708 | } | |
709 | ||
8ca151b5 JB |
710 | /* |
711 | * Send the add station command for the vif's broadcast station. | |
712 | * Assumes that the station was already allocated. | |
713 | * | |
714 | * @mvm: the mvm component | |
715 | * @vif: the interface to which the broadcast station is added | |
716 | * @bsta: the broadcast station to add. | |
717 | */ | |
013290aa | 718 | int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
719 | { |
720 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 721 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
5023d966 | 722 | static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
a4243402 | 723 | const u8 *baddr = _baddr; |
8ca151b5 JB |
724 | |
725 | lockdep_assert_held(&mvm->mutex); | |
726 | ||
5023d966 JB |
727 | if (vif->type == NL80211_IFTYPE_ADHOC) |
728 | baddr = vif->bss_conf.bssid; | |
729 | ||
8ca151b5 JB |
730 | if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) |
731 | return -ENOSPC; | |
732 | ||
733 | return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, | |
734 | mvmvif->id, mvmvif->color); | |
735 | } | |
736 | ||
737 | /* Send the FW a request to remove the station from it's internal data | |
738 | * structures, but DO NOT remove the entry from the local data structures. */ | |
013290aa | 739 | int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 | 740 | { |
013290aa | 741 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
742 | int ret; |
743 | ||
744 | lockdep_assert_held(&mvm->mutex); | |
745 | ||
013290aa | 746 | ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); |
8ca151b5 JB |
747 | if (ret) |
748 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
749 | return ret; | |
750 | } | |
751 | ||
013290aa JB |
752 | int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
753 | { | |
754 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
755 | u32 qmask; | |
756 | ||
757 | lockdep_assert_held(&mvm->mutex); | |
758 | ||
d92b732e | 759 | qmask = iwl_mvm_mac_get_queues_mask(vif); |
013290aa JB |
760 | |
761 | /* | |
762 | * The firmware defines the TFD queue mask to only be relevant | |
763 | * for *unicast* queues, so the multicast (CAB) queue shouldn't | |
764 | * be included. | |
765 | */ | |
766 | if (vif->type == NL80211_IFTYPE_AP) | |
767 | qmask &= ~BIT(vif->cab_queue); | |
768 | ||
769 | return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, | |
770 | ieee80211_vif_type_p2p(vif)); | |
771 | } | |
772 | ||
8ca151b5 JB |
773 | /* Allocate a new station entry for the broadcast station to the given vif, |
774 | * and send it to the FW. | |
775 | * Note that each P2P mac should have its own broadcast station. | |
776 | * | |
777 | * @mvm: the mvm component | |
778 | * @vif: the interface to which the broadcast station is added | |
779 | * @bsta: the broadcast station to add. */ | |
013290aa | 780 | int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
781 | { |
782 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 783 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
8ca151b5 JB |
784 | int ret; |
785 | ||
786 | lockdep_assert_held(&mvm->mutex); | |
787 | ||
013290aa | 788 | ret = iwl_mvm_alloc_bcast_sta(mvm, vif); |
8ca151b5 JB |
789 | if (ret) |
790 | return ret; | |
791 | ||
013290aa | 792 | ret = iwl_mvm_send_add_bcast_sta(mvm, vif); |
8ca151b5 JB |
793 | |
794 | if (ret) | |
795 | iwl_mvm_dealloc_int_sta(mvm, bsta); | |
013290aa | 796 | |
8ca151b5 JB |
797 | return ret; |
798 | } | |
799 | ||
013290aa JB |
800 | void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
801 | { | |
802 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
803 | ||
804 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
805 | } | |
806 | ||
8ca151b5 JB |
807 | /* |
808 | * Send the FW a request to remove the station from it's internal data | |
809 | * structures, and in addition remove it from the local data structure. | |
810 | */ | |
013290aa | 811 | int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
812 | { |
813 | int ret; | |
814 | ||
815 | lockdep_assert_held(&mvm->mutex); | |
816 | ||
013290aa JB |
817 | ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); |
818 | ||
819 | iwl_mvm_dealloc_bcast_sta(mvm, vif); | |
8ca151b5 | 820 | |
8ca151b5 JB |
821 | return ret; |
822 | } | |
823 | ||
113a0447 EG |
824 | #define IWL_MAX_RX_BA_SESSIONS 16 |
825 | ||
8ca151b5 JB |
826 | int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
827 | int tid, u16 ssn, bool start) | |
828 | { | |
9d8ce6af | 829 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 830 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
831 | int ret; |
832 | u32 status; | |
833 | ||
834 | lockdep_assert_held(&mvm->mutex); | |
835 | ||
113a0447 EG |
836 | if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { |
837 | IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); | |
838 | return -ENOSPC; | |
839 | } | |
840 | ||
8ca151b5 JB |
841 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
842 | cmd.sta_id = mvm_sta->sta_id; | |
843 | cmd.add_modify = STA_MODE_MODIFY; | |
93a42667 EG |
844 | if (start) { |
845 | cmd.add_immediate_ba_tid = (u8) tid; | |
846 | cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
847 | } else { | |
848 | cmd.remove_immediate_ba_tid = (u8) tid; | |
849 | } | |
8ca151b5 JB |
850 | cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : |
851 | STA_MODIFY_REMOVE_BA_TID; | |
852 | ||
853 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
854 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
855 | &cmd, &status); | |
8ca151b5 JB |
856 | if (ret) |
857 | return ret; | |
858 | ||
859 | switch (status) { | |
860 | case ADD_STA_SUCCESS: | |
861 | IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", | |
862 | start ? "start" : "stopp"); | |
863 | break; | |
864 | case ADD_STA_IMMEDIATE_BA_FAILURE: | |
865 | IWL_WARN(mvm, "RX BA Session refused by fw\n"); | |
866 | ret = -ENOSPC; | |
867 | break; | |
868 | default: | |
869 | ret = -EIO; | |
870 | IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", | |
871 | start ? "start" : "stopp", status); | |
872 | break; | |
873 | } | |
874 | ||
113a0447 EG |
875 | if (!ret) { |
876 | if (start) | |
877 | mvm->rx_ba_sessions++; | |
878 | else if (mvm->rx_ba_sessions > 0) | |
879 | /* check that restart flow didn't zero the counter */ | |
880 | mvm->rx_ba_sessions--; | |
881 | } | |
882 | ||
8ca151b5 JB |
883 | return ret; |
884 | } | |
885 | ||
886 | static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
887 | int tid, u8 queue, bool start) | |
888 | { | |
9d8ce6af | 889 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 890 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
891 | int ret; |
892 | u32 status; | |
893 | ||
894 | lockdep_assert_held(&mvm->mutex); | |
895 | ||
896 | if (start) { | |
897 | mvm_sta->tfd_queue_msk |= BIT(queue); | |
898 | mvm_sta->tid_disable_agg &= ~BIT(tid); | |
899 | } else { | |
900 | mvm_sta->tfd_queue_msk &= ~BIT(queue); | |
901 | mvm_sta->tid_disable_agg |= BIT(tid); | |
902 | } | |
903 | ||
904 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); | |
905 | cmd.sta_id = mvm_sta->sta_id; | |
906 | cmd.add_modify = STA_MODE_MODIFY; | |
907 | cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; | |
908 | cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
909 | cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); | |
910 | ||
911 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
912 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
913 | &cmd, &status); | |
8ca151b5 JB |
914 | if (ret) |
915 | return ret; | |
916 | ||
917 | switch (status) { | |
918 | case ADD_STA_SUCCESS: | |
919 | break; | |
920 | default: | |
921 | ret = -EIO; | |
922 | IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", | |
923 | start ? "start" : "stopp", status); | |
924 | break; | |
925 | } | |
926 | ||
927 | return ret; | |
928 | } | |
929 | ||
b797e3fb | 930 | const u8 tid_to_mac80211_ac[] = { |
8ca151b5 JB |
931 | IEEE80211_AC_BE, |
932 | IEEE80211_AC_BK, | |
933 | IEEE80211_AC_BK, | |
934 | IEEE80211_AC_BE, | |
935 | IEEE80211_AC_VI, | |
936 | IEEE80211_AC_VI, | |
937 | IEEE80211_AC_VO, | |
938 | IEEE80211_AC_VO, | |
939 | }; | |
940 | ||
3e56eadf JB |
941 | static const u8 tid_to_ucode_ac[] = { |
942 | AC_BE, | |
943 | AC_BK, | |
944 | AC_BK, | |
945 | AC_BE, | |
946 | AC_VI, | |
947 | AC_VI, | |
948 | AC_VO, | |
949 | AC_VO, | |
950 | }; | |
951 | ||
8ca151b5 JB |
952 | int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
953 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) | |
954 | { | |
5b577a90 | 955 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
956 | struct iwl_mvm_tid_data *tid_data; |
957 | int txq_id; | |
4ecafae9 | 958 | int ret; |
8ca151b5 JB |
959 | |
960 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
961 | return -EINVAL; | |
962 | ||
963 | if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { | |
964 | IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", | |
965 | mvmsta->tid_data[tid].state); | |
966 | return -ENXIO; | |
967 | } | |
968 | ||
969 | lockdep_assert_held(&mvm->mutex); | |
970 | ||
b2492501 AN |
971 | spin_lock_bh(&mvmsta->lock); |
972 | ||
973 | /* possible race condition - we entered D0i3 while starting agg */ | |
974 | if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { | |
975 | spin_unlock_bh(&mvmsta->lock); | |
976 | IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); | |
977 | return -EIO; | |
978 | } | |
979 | ||
4ecafae9 LK |
980 | spin_lock_bh(&mvm->queue_info_lock); |
981 | ||
982 | txq_id = iwl_mvm_find_free_queue(mvm, mvm->first_agg_queue, | |
983 | mvm->last_agg_queue); | |
984 | if (txq_id < 0) { | |
985 | ret = txq_id; | |
986 | spin_unlock_bh(&mvm->queue_info_lock); | |
987 | IWL_ERR(mvm, "Failed to allocate agg queue\n"); | |
988 | goto release_locks; | |
989 | } | |
990 | mvm->queue_info[txq_id].setup_reserved = true; | |
991 | spin_unlock_bh(&mvm->queue_info_lock); | |
8ca151b5 | 992 | |
8ca151b5 | 993 | tid_data = &mvmsta->tid_data[tid]; |
9a886586 | 994 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
995 | tid_data->txq_id = txq_id; |
996 | *ssn = tid_data->ssn; | |
997 | ||
998 | IWL_DEBUG_TX_QUEUES(mvm, | |
999 | "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", | |
1000 | mvmsta->sta_id, tid, txq_id, tid_data->ssn, | |
1001 | tid_data->next_reclaimed); | |
1002 | ||
1003 | if (tid_data->ssn == tid_data->next_reclaimed) { | |
1004 | tid_data->state = IWL_AGG_STARTING; | |
1005 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1006 | } else { | |
1007 | tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
1008 | } | |
1009 | ||
4ecafae9 LK |
1010 | ret = 0; |
1011 | ||
1012 | release_locks: | |
8ca151b5 JB |
1013 | spin_unlock_bh(&mvmsta->lock); |
1014 | ||
4ecafae9 | 1015 | return ret; |
8ca151b5 JB |
1016 | } |
1017 | ||
1018 | int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1019 | struct ieee80211_sta *sta, u16 tid, u8 buf_size) | |
1020 | { | |
5b577a90 | 1021 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 1022 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
5d42e7b2 EG |
1023 | unsigned int wdg_timeout = |
1024 | iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); | |
8ca151b5 JB |
1025 | int queue, fifo, ret; |
1026 | u16 ssn; | |
1027 | ||
efed6640 ES |
1028 | BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) |
1029 | != IWL_MAX_TID_COUNT); | |
1030 | ||
8ca151b5 JB |
1031 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); |
1032 | ||
1033 | spin_lock_bh(&mvmsta->lock); | |
1034 | ssn = tid_data->ssn; | |
1035 | queue = tid_data->txq_id; | |
1036 | tid_data->state = IWL_AGG_ON; | |
efed6640 | 1037 | mvmsta->agg_tids |= BIT(tid); |
8ca151b5 JB |
1038 | tid_data->ssn = 0xffff; |
1039 | spin_unlock_bh(&mvmsta->lock); | |
1040 | ||
3e56eadf | 1041 | fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; |
8ca151b5 | 1042 | |
4ecafae9 LK |
1043 | iwl_mvm_enable_agg_txq(mvm, queue, |
1044 | vif->hw_queue[tid_to_mac80211_ac[tid]], fifo, | |
1045 | mvmsta->sta_id, tid, buf_size, ssn, wdg_timeout); | |
fa7878e7 | 1046 | |
8ca151b5 JB |
1047 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); |
1048 | if (ret) | |
1049 | return -EIO; | |
1050 | ||
4ecafae9 LK |
1051 | /* No need to mark as reserved */ |
1052 | spin_lock_bh(&mvm->queue_info_lock); | |
1053 | mvm->queue_info[queue].setup_reserved = false; | |
1054 | spin_unlock_bh(&mvm->queue_info_lock); | |
1055 | ||
8ca151b5 JB |
1056 | /* |
1057 | * Even though in theory the peer could have different | |
1058 | * aggregation reorder buffer sizes for different sessions, | |
1059 | * our ucode doesn't allow for that and has a global limit | |
1060 | * for each station. Therefore, use the minimum of all the | |
1061 | * aggregation sessions and our default value. | |
1062 | */ | |
1063 | mvmsta->max_agg_bufsize = | |
1064 | min(mvmsta->max_agg_bufsize, buf_size); | |
1065 | mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; | |
1066 | ||
9ee718aa EL |
1067 | IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", |
1068 | sta->addr, tid); | |
1069 | ||
9e680946 | 1070 | return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); |
8ca151b5 JB |
1071 | } |
1072 | ||
1073 | int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1074 | struct ieee80211_sta *sta, u16 tid) | |
1075 | { | |
5b577a90 | 1076 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1077 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1078 | u16 txq_id; | |
1079 | int err; | |
1080 | ||
f9aa8dd3 EG |
1081 | |
1082 | /* | |
1083 | * If mac80211 is cleaning its state, then say that we finished since | |
1084 | * our state has been cleared anyway. | |
1085 | */ | |
1086 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
1087 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1088 | return 0; | |
1089 | } | |
1090 | ||
8ca151b5 JB |
1091 | spin_lock_bh(&mvmsta->lock); |
1092 | ||
1093 | txq_id = tid_data->txq_id; | |
1094 | ||
1095 | IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", | |
1096 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
1097 | ||
efed6640 ES |
1098 | mvmsta->agg_tids &= ~BIT(tid); |
1099 | ||
4ecafae9 LK |
1100 | /* No need to mark as reserved anymore */ |
1101 | spin_lock_bh(&mvm->queue_info_lock); | |
1102 | mvm->queue_info[txq_id].setup_reserved = false; | |
1103 | spin_unlock_bh(&mvm->queue_info_lock); | |
1104 | ||
8ca151b5 JB |
1105 | switch (tid_data->state) { |
1106 | case IWL_AGG_ON: | |
9a886586 | 1107 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1108 | |
1109 | IWL_DEBUG_TX_QUEUES(mvm, | |
1110 | "ssn = %d, next_recl = %d\n", | |
1111 | tid_data->ssn, tid_data->next_reclaimed); | |
1112 | ||
1113 | /* There are still packets for this RA / TID in the HW */ | |
1114 | if (tid_data->ssn != tid_data->next_reclaimed) { | |
1115 | tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; | |
1116 | err = 0; | |
1117 | break; | |
1118 | } | |
1119 | ||
1120 | tid_data->ssn = 0xffff; | |
f7f89e7b | 1121 | tid_data->state = IWL_AGG_OFF; |
f7f89e7b JB |
1122 | spin_unlock_bh(&mvmsta->lock); |
1123 | ||
1124 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1125 | ||
1126 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); | |
1127 | ||
4ecafae9 LK |
1128 | iwl_mvm_disable_txq(mvm, txq_id, |
1129 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1130 | 0); | |
f7f89e7b | 1131 | return 0; |
8ca151b5 JB |
1132 | case IWL_AGG_STARTING: |
1133 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
1134 | /* | |
1135 | * The agg session has been stopped before it was set up. This | |
1136 | * can happen when the AddBA timer times out for example. | |
1137 | */ | |
1138 | ||
1139 | /* No barriers since we are under mutex */ | |
1140 | lockdep_assert_held(&mvm->mutex); | |
8ca151b5 JB |
1141 | |
1142 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1143 | tid_data->state = IWL_AGG_OFF; | |
1144 | err = 0; | |
1145 | break; | |
1146 | default: | |
1147 | IWL_ERR(mvm, | |
1148 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
1149 | mvmsta->sta_id, tid, tid_data->state); | |
1150 | IWL_ERR(mvm, | |
1151 | "\ttid_data->txq_id = %d\n", tid_data->txq_id); | |
1152 | err = -EINVAL; | |
1153 | } | |
1154 | ||
1155 | spin_unlock_bh(&mvmsta->lock); | |
1156 | ||
1157 | return err; | |
1158 | } | |
1159 | ||
e3d9e7ce EG |
1160 | int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1161 | struct ieee80211_sta *sta, u16 tid) | |
1162 | { | |
5b577a90 | 1163 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
e3d9e7ce EG |
1164 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1165 | u16 txq_id; | |
b6658ff8 | 1166 | enum iwl_mvm_agg_state old_state; |
e3d9e7ce EG |
1167 | |
1168 | /* | |
1169 | * First set the agg state to OFF to avoid calling | |
1170 | * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. | |
1171 | */ | |
1172 | spin_lock_bh(&mvmsta->lock); | |
1173 | txq_id = tid_data->txq_id; | |
1174 | IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", | |
1175 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
b6658ff8 | 1176 | old_state = tid_data->state; |
e3d9e7ce | 1177 | tid_data->state = IWL_AGG_OFF; |
efed6640 | 1178 | mvmsta->agg_tids &= ~BIT(tid); |
e3d9e7ce EG |
1179 | spin_unlock_bh(&mvmsta->lock); |
1180 | ||
4ecafae9 LK |
1181 | /* No need to mark as reserved */ |
1182 | spin_lock_bh(&mvm->queue_info_lock); | |
1183 | mvm->queue_info[txq_id].setup_reserved = false; | |
1184 | spin_unlock_bh(&mvm->queue_info_lock); | |
1185 | ||
b6658ff8 | 1186 | if (old_state >= IWL_AGG_ON) { |
fe92e32a | 1187 | iwl_mvm_drain_sta(mvm, mvmsta, true); |
5888a40c | 1188 | if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) |
b6658ff8 | 1189 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); |
fe92e32a EG |
1190 | iwl_trans_wait_tx_queue_empty(mvm->trans, |
1191 | mvmsta->tfd_queue_msk); | |
1192 | iwl_mvm_drain_sta(mvm, mvmsta, false); | |
b6658ff8 | 1193 | |
f7f89e7b JB |
1194 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); |
1195 | ||
4ecafae9 LK |
1196 | iwl_mvm_disable_txq(mvm, tid_data->txq_id, |
1197 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1198 | 0); | |
b6658ff8 | 1199 | } |
e3d9e7ce | 1200 | |
e3d9e7ce EG |
1201 | return 0; |
1202 | } | |
1203 | ||
8ca151b5 JB |
1204 | static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) |
1205 | { | |
2dc2a15e | 1206 | int i, max = -1, max_offs = -1; |
8ca151b5 JB |
1207 | |
1208 | lockdep_assert_held(&mvm->mutex); | |
1209 | ||
2dc2a15e JB |
1210 | /* Pick the unused key offset with the highest 'deleted' |
1211 | * counter. Every time a key is deleted, all the counters | |
1212 | * are incremented and the one that was just deleted is | |
1213 | * reset to zero. Thus, the highest counter is the one | |
1214 | * that was deleted longest ago. Pick that one. | |
1215 | */ | |
1216 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1217 | if (test_bit(i, mvm->fw_key_table)) | |
1218 | continue; | |
1219 | if (mvm->fw_key_deleted[i] > max) { | |
1220 | max = mvm->fw_key_deleted[i]; | |
1221 | max_offs = i; | |
1222 | } | |
1223 | } | |
8ca151b5 | 1224 | |
2dc2a15e | 1225 | if (max_offs < 0) |
8ca151b5 JB |
1226 | return STA_KEY_IDX_INVALID; |
1227 | ||
2dc2a15e | 1228 | return max_offs; |
8ca151b5 JB |
1229 | } |
1230 | ||
9513c5e1 AA |
1231 | static u8 iwl_mvm_get_key_sta_id(struct iwl_mvm *mvm, |
1232 | struct ieee80211_vif *vif, | |
8ca151b5 JB |
1233 | struct ieee80211_sta *sta) |
1234 | { | |
5b530e95 | 1235 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1236 | |
1237 | if (sta) { | |
9d8ce6af | 1238 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1239 | |
1240 | return mvm_sta->sta_id; | |
1241 | } | |
1242 | ||
1243 | /* | |
1244 | * The device expects GTKs for station interfaces to be | |
1245 | * installed as GTKs for the AP station. If we have no | |
1246 | * station ID, then use AP's station ID. | |
1247 | */ | |
1248 | if (vif->type == NL80211_IFTYPE_STATION && | |
9513c5e1 AA |
1249 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { |
1250 | u8 sta_id = mvmvif->ap_sta_id; | |
1251 | ||
45854360 JB |
1252 | sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], |
1253 | lockdep_is_held(&mvm->mutex)); | |
9513c5e1 AA |
1254 | /* |
1255 | * It is possible that the 'sta' parameter is NULL, | |
1256 | * for example when a GTK is removed - the sta_id will then | |
1257 | * be the AP ID, and no station was passed by mac80211. | |
1258 | */ | |
1259 | if (IS_ERR_OR_NULL(sta)) | |
1260 | return IWL_MVM_STATION_COUNT; | |
1261 | ||
1262 | return sta_id; | |
1263 | } | |
8ca151b5 | 1264 | |
881acd89 | 1265 | return IWL_MVM_STATION_COUNT; |
8ca151b5 JB |
1266 | } |
1267 | ||
1268 | static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, | |
1269 | struct iwl_mvm_sta *mvm_sta, | |
ba3943b0 | 1270 | struct ieee80211_key_conf *keyconf, bool mcast, |
d6ee54a9 LC |
1271 | u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, |
1272 | u8 key_offset) | |
8ca151b5 | 1273 | { |
5a258aae | 1274 | struct iwl_mvm_add_sta_key_cmd cmd = {}; |
f9dc0004 | 1275 | __le16 key_flags; |
79920749 JB |
1276 | int ret; |
1277 | u32 status; | |
8ca151b5 JB |
1278 | u16 keyidx; |
1279 | int i; | |
2f6319d1 | 1280 | u8 sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1281 | |
1282 | keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1283 | STA_KEY_FLG_KEYID_MSK; | |
1284 | key_flags = cpu_to_le16(keyidx); | |
1285 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); | |
1286 | ||
1287 | switch (keyconf->cipher) { | |
1288 | case WLAN_CIPHER_SUITE_TKIP: | |
1289 | key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); | |
5a258aae | 1290 | cmd.tkip_rx_tsc_byte2 = tkip_iv32; |
8ca151b5 | 1291 | for (i = 0; i < 5; i++) |
5a258aae MS |
1292 | cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); |
1293 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1294 | break; |
1295 | case WLAN_CIPHER_SUITE_CCMP: | |
1296 | key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); | |
5a258aae | 1297 | memcpy(cmd.key, keyconf->key, keyconf->keylen); |
8ca151b5 | 1298 | break; |
ba3943b0 JB |
1299 | case WLAN_CIPHER_SUITE_WEP104: |
1300 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); | |
aa0cb08b | 1301 | /* fall through */ |
ba3943b0 JB |
1302 | case WLAN_CIPHER_SUITE_WEP40: |
1303 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); | |
1304 | memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); | |
1305 | break; | |
8ca151b5 | 1306 | default: |
e36e5433 MS |
1307 | key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); |
1308 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1309 | } |
1310 | ||
ba3943b0 | 1311 | if (mcast) |
8ca151b5 JB |
1312 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1313 | ||
d6ee54a9 | 1314 | cmd.key_offset = key_offset; |
5a258aae | 1315 | cmd.key_flags = key_flags; |
8ca151b5 JB |
1316 | cmd.sta_id = sta_id; |
1317 | ||
1318 | status = ADD_STA_SUCCESS; | |
a1022927 | 1319 | if (cmd_flags & CMD_ASYNC) |
f9dc0004 EG |
1320 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, |
1321 | sizeof(cmd), &cmd); | |
a1022927 EG |
1322 | else |
1323 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1324 | &cmd, &status); | |
8ca151b5 JB |
1325 | |
1326 | switch (status) { | |
1327 | case ADD_STA_SUCCESS: | |
1328 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); | |
1329 | break; | |
1330 | default: | |
1331 | ret = -EIO; | |
1332 | IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); | |
1333 | break; | |
1334 | } | |
1335 | ||
1336 | return ret; | |
1337 | } | |
1338 | ||
1339 | static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, | |
1340 | struct ieee80211_key_conf *keyconf, | |
1341 | u8 sta_id, bool remove_key) | |
1342 | { | |
1343 | struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; | |
1344 | ||
1345 | /* verify the key details match the required command's expectations */ | |
1346 | if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || | |
1347 | (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || | |
1348 | (keyconf->keyidx != 4 && keyconf->keyidx != 5))) | |
1349 | return -EINVAL; | |
1350 | ||
1351 | igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); | |
1352 | igtk_cmd.sta_id = cpu_to_le32(sta_id); | |
1353 | ||
1354 | if (remove_key) { | |
1355 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); | |
1356 | } else { | |
1357 | struct ieee80211_key_seq seq; | |
1358 | const u8 *pn; | |
1359 | ||
1360 | memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1361 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); |
1362 | pn = seq.aes_cmac.pn; | |
1363 | igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | | |
1364 | ((u64) pn[4] << 8) | | |
1365 | ((u64) pn[3] << 16) | | |
1366 | ((u64) pn[2] << 24) | | |
1367 | ((u64) pn[1] << 32) | | |
1368 | ((u64) pn[0] << 40)); | |
1369 | } | |
1370 | ||
1371 | IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", | |
1372 | remove_key ? "removing" : "installing", | |
1373 | igtk_cmd.sta_id); | |
1374 | ||
a1022927 | 1375 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
8ca151b5 JB |
1376 | sizeof(igtk_cmd), &igtk_cmd); |
1377 | } | |
1378 | ||
1379 | ||
1380 | static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, | |
1381 | struct ieee80211_vif *vif, | |
1382 | struct ieee80211_sta *sta) | |
1383 | { | |
5b530e95 | 1384 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1385 | |
1386 | if (sta) | |
1387 | return sta->addr; | |
1388 | ||
1389 | if (vif->type == NL80211_IFTYPE_STATION && | |
1390 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { | |
1391 | u8 sta_id = mvmvif->ap_sta_id; | |
1392 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1393 | lockdep_is_held(&mvm->mutex)); | |
1394 | return sta->addr; | |
1395 | } | |
1396 | ||
1397 | ||
1398 | return NULL; | |
1399 | } | |
1400 | ||
2f6319d1 JB |
1401 | static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1402 | struct ieee80211_vif *vif, | |
1403 | struct ieee80211_sta *sta, | |
ba3943b0 | 1404 | struct ieee80211_key_conf *keyconf, |
d6ee54a9 | 1405 | u8 key_offset, |
ba3943b0 | 1406 | bool mcast) |
2f6319d1 JB |
1407 | { |
1408 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1409 | int ret; | |
1410 | const u8 *addr; | |
1411 | struct ieee80211_key_seq seq; | |
1412 | u16 p1k[5]; | |
1413 | ||
1414 | switch (keyconf->cipher) { | |
1415 | case WLAN_CIPHER_SUITE_TKIP: | |
1416 | addr = iwl_mvm_get_mac_addr(mvm, vif, sta); | |
1417 | /* get phase 1 key from mac80211 */ | |
1418 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1419 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
ba3943b0 | 1420 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1421 | seq.tkip.iv32, p1k, 0, key_offset); |
2f6319d1 JB |
1422 | break; |
1423 | case WLAN_CIPHER_SUITE_CCMP: | |
ba3943b0 JB |
1424 | case WLAN_CIPHER_SUITE_WEP40: |
1425 | case WLAN_CIPHER_SUITE_WEP104: | |
1426 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, | |
d6ee54a9 | 1427 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
1428 | break; |
1429 | default: | |
ba3943b0 | 1430 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1431 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
1432 | } |
1433 | ||
1434 | return ret; | |
1435 | } | |
1436 | ||
1437 | static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, | |
ba3943b0 JB |
1438 | struct ieee80211_key_conf *keyconf, |
1439 | bool mcast) | |
2f6319d1 JB |
1440 | { |
1441 | struct iwl_mvm_add_sta_key_cmd cmd = {}; | |
1442 | __le16 key_flags; | |
1443 | int ret; | |
1444 | u32 status; | |
1445 | ||
1446 | key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1447 | STA_KEY_FLG_KEYID_MSK); | |
1448 | key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); | |
1449 | key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); | |
1450 | ||
ba3943b0 | 1451 | if (mcast) |
2f6319d1 JB |
1452 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1453 | ||
1454 | cmd.key_flags = key_flags; | |
1455 | cmd.key_offset = keyconf->hw_key_idx; | |
1456 | cmd.sta_id = sta_id; | |
1457 | ||
1458 | status = ADD_STA_SUCCESS; | |
1459 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1460 | &cmd, &status); | |
1461 | ||
1462 | switch (status) { | |
1463 | case ADD_STA_SUCCESS: | |
1464 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); | |
1465 | break; | |
1466 | default: | |
1467 | ret = -EIO; | |
1468 | IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); | |
1469 | break; | |
1470 | } | |
1471 | ||
1472 | return ret; | |
1473 | } | |
1474 | ||
8ca151b5 JB |
1475 | int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1476 | struct ieee80211_vif *vif, | |
1477 | struct ieee80211_sta *sta, | |
1478 | struct ieee80211_key_conf *keyconf, | |
d6ee54a9 | 1479 | u8 key_offset) |
8ca151b5 | 1480 | { |
ba3943b0 | 1481 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
2f6319d1 | 1482 | u8 sta_id; |
8ca151b5 | 1483 | int ret; |
11828dbc | 1484 | static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; |
8ca151b5 JB |
1485 | |
1486 | lockdep_assert_held(&mvm->mutex); | |
1487 | ||
1488 | /* Get the station id from the mvm local station table */ | |
9513c5e1 | 1489 | sta_id = iwl_mvm_get_key_sta_id(mvm, vif, sta); |
881acd89 | 1490 | if (sta_id == IWL_MVM_STATION_COUNT) { |
8ca151b5 JB |
1491 | IWL_ERR(mvm, "Failed to find station id\n"); |
1492 | return -EINVAL; | |
1493 | } | |
1494 | ||
1495 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { | |
1496 | ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); | |
1497 | goto end; | |
1498 | } | |
1499 | ||
1500 | /* | |
1501 | * It is possible that the 'sta' parameter is NULL, and thus | |
1502 | * there is a need to retrieve the sta from the local station table. | |
1503 | */ | |
1504 | if (!sta) { | |
1505 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1506 | lockdep_is_held(&mvm->mutex)); | |
1507 | if (IS_ERR_OR_NULL(sta)) { | |
1508 | IWL_ERR(mvm, "Invalid station id\n"); | |
1509 | return -EINVAL; | |
1510 | } | |
1511 | } | |
1512 | ||
2f6319d1 | 1513 | if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
8ca151b5 JB |
1514 | return -EINVAL; |
1515 | ||
d6ee54a9 LC |
1516 | /* If the key_offset is not pre-assigned, we need to find a |
1517 | * new offset to use. In normal cases, the offset is not | |
1518 | * pre-assigned, but during HW_RESTART we want to reuse the | |
1519 | * same indices, so we pass them when this function is called. | |
1520 | * | |
1521 | * In D3 entry, we need to hardcoded the indices (because the | |
1522 | * firmware hardcodes the PTK offset to 0). In this case, we | |
1523 | * need to make sure we don't overwrite the hw_key_idx in the | |
1524 | * keyconf structure, because otherwise we cannot configure | |
1525 | * the original ones back when resuming. | |
1526 | */ | |
1527 | if (key_offset == STA_KEY_IDX_INVALID) { | |
1528 | key_offset = iwl_mvm_set_fw_key_idx(mvm); | |
1529 | if (key_offset == STA_KEY_IDX_INVALID) | |
8ca151b5 | 1530 | return -ENOSPC; |
d6ee54a9 | 1531 | keyconf->hw_key_idx = key_offset; |
8ca151b5 JB |
1532 | } |
1533 | ||
d6ee54a9 | 1534 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); |
9c3deeb5 | 1535 | if (ret) |
ba3943b0 | 1536 | goto end; |
ba3943b0 JB |
1537 | |
1538 | /* | |
1539 | * For WEP, the same key is used for multicast and unicast. Upload it | |
1540 | * again, using the same key offset, and now pointing the other one | |
1541 | * to the same key slot (offset). | |
1542 | * If this fails, remove the original as well. | |
1543 | */ | |
1544 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1545 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { | |
d6ee54a9 LC |
1546 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, |
1547 | key_offset, !mcast); | |
ba3943b0 | 1548 | if (ret) { |
ba3943b0 | 1549 | __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
9c3deeb5 | 1550 | goto end; |
ba3943b0 JB |
1551 | } |
1552 | } | |
8ca151b5 | 1553 | |
9c3deeb5 LC |
1554 | __set_bit(key_offset, mvm->fw_key_table); |
1555 | ||
8ca151b5 JB |
1556 | end: |
1557 | IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
1558 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, | |
11828dbc | 1559 | sta ? sta->addr : zero_addr, ret); |
8ca151b5 JB |
1560 | return ret; |
1561 | } | |
1562 | ||
1563 | int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, | |
1564 | struct ieee80211_vif *vif, | |
1565 | struct ieee80211_sta *sta, | |
1566 | struct ieee80211_key_conf *keyconf) | |
1567 | { | |
ba3943b0 | 1568 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 1569 | u8 sta_id; |
2dc2a15e | 1570 | int ret, i; |
8ca151b5 JB |
1571 | |
1572 | lockdep_assert_held(&mvm->mutex); | |
1573 | ||
1574 | /* Get the station id from the mvm local station table */ | |
9513c5e1 | 1575 | sta_id = iwl_mvm_get_key_sta_id(mvm, vif, sta); |
8ca151b5 JB |
1576 | |
1577 | IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", | |
1578 | keyconf->keyidx, sta_id); | |
1579 | ||
1580 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) | |
1581 | return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); | |
1582 | ||
2f6319d1 | 1583 | if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { |
8ca151b5 JB |
1584 | IWL_ERR(mvm, "offset %d not used in fw key table.\n", |
1585 | keyconf->hw_key_idx); | |
1586 | return -ENOENT; | |
1587 | } | |
1588 | ||
2dc2a15e JB |
1589 | /* track which key was deleted last */ |
1590 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1591 | if (mvm->fw_key_deleted[i] < U8_MAX) | |
1592 | mvm->fw_key_deleted[i]++; | |
1593 | } | |
1594 | mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; | |
1595 | ||
881acd89 | 1596 | if (sta_id == IWL_MVM_STATION_COUNT) { |
8ca151b5 JB |
1597 | IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); |
1598 | return 0; | |
1599 | } | |
1600 | ||
ba3943b0 JB |
1601 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
1602 | if (ret) | |
1603 | return ret; | |
1604 | ||
1605 | /* delete WEP key twice to get rid of (now useless) offset */ | |
1606 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1607 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) | |
1608 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); | |
1609 | ||
1610 | return ret; | |
8ca151b5 JB |
1611 | } |
1612 | ||
1613 | void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, | |
1614 | struct ieee80211_vif *vif, | |
1615 | struct ieee80211_key_conf *keyconf, | |
1616 | struct ieee80211_sta *sta, u32 iv32, | |
1617 | u16 *phase1key) | |
1618 | { | |
c3eb536a | 1619 | struct iwl_mvm_sta *mvm_sta; |
45854360 | 1620 | u8 sta_id; |
ba3943b0 | 1621 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 1622 | |
c3eb536a BL |
1623 | rcu_read_lock(); |
1624 | ||
45854360 JB |
1625 | sta_id = iwl_mvm_get_key_sta_id(mvm, vif, sta); |
1626 | if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT)) | |
1627 | goto unlock; | |
1628 | ||
c3eb536a BL |
1629 | if (!sta) { |
1630 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1631 | if (WARN_ON(IS_ERR_OR_NULL(sta))) { | |
1632 | rcu_read_unlock(); | |
1633 | return; | |
1634 | } | |
1635 | } | |
1636 | ||
2f6319d1 | 1637 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
ba3943b0 | 1638 | iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1639 | iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); |
45854360 JB |
1640 | |
1641 | unlock: | |
c3eb536a | 1642 | rcu_read_unlock(); |
8ca151b5 JB |
1643 | } |
1644 | ||
9cc40712 JB |
1645 | void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, |
1646 | struct ieee80211_sta *sta) | |
8ca151b5 | 1647 | { |
5b577a90 | 1648 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1649 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1650 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1651 | .sta_id = mvmsta->sta_id, |
5af01772 | 1652 | .station_flags_msk = cpu_to_le32(STA_FLG_PS), |
9cc40712 | 1653 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 JB |
1654 | }; |
1655 | int ret; | |
1656 | ||
f9dc0004 | 1657 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); |
8ca151b5 JB |
1658 | if (ret) |
1659 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1660 | } | |
1661 | ||
9cc40712 JB |
1662 | void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, |
1663 | struct ieee80211_sta *sta, | |
8ca151b5 | 1664 | enum ieee80211_frame_release_type reason, |
3e56eadf JB |
1665 | u16 cnt, u16 tids, bool more_data, |
1666 | bool agg) | |
8ca151b5 | 1667 | { |
5b577a90 | 1668 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1669 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1670 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1671 | .sta_id = mvmsta->sta_id, |
8ca151b5 JB |
1672 | .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, |
1673 | .sleep_tx_count = cpu_to_le16(cnt), | |
9cc40712 | 1674 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 | 1675 | }; |
3e56eadf JB |
1676 | int tid, ret; |
1677 | unsigned long _tids = tids; | |
1678 | ||
1679 | /* convert TIDs to ACs - we don't support TSPEC so that's OK | |
1680 | * Note that this field is reserved and unused by firmware not | |
1681 | * supporting GO uAPSD, so it's safe to always do this. | |
1682 | */ | |
1683 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) | |
1684 | cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); | |
1685 | ||
1686 | /* If we're releasing frames from aggregation queues then check if the | |
1687 | * all queues combined that we're releasing frames from have | |
1688 | * - more frames than the service period, in which case more_data | |
1689 | * needs to be set | |
1690 | * - fewer than 'cnt' frames, in which case we need to adjust the | |
1691 | * firmware command (but do that unconditionally) | |
1692 | */ | |
1693 | if (agg) { | |
1694 | int remaining = cnt; | |
36be0eb6 | 1695 | int sleep_tx_count; |
3e56eadf JB |
1696 | |
1697 | spin_lock_bh(&mvmsta->lock); | |
1698 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { | |
1699 | struct iwl_mvm_tid_data *tid_data; | |
1700 | u16 n_queued; | |
1701 | ||
1702 | tid_data = &mvmsta->tid_data[tid]; | |
1703 | if (WARN(tid_data->state != IWL_AGG_ON && | |
1704 | tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, | |
1705 | "TID %d state is %d\n", | |
1706 | tid, tid_data->state)) { | |
1707 | spin_unlock_bh(&mvmsta->lock); | |
1708 | ieee80211_sta_eosp(sta); | |
1709 | return; | |
1710 | } | |
1711 | ||
1712 | n_queued = iwl_mvm_tid_queued(tid_data); | |
1713 | if (n_queued > remaining) { | |
1714 | more_data = true; | |
1715 | remaining = 0; | |
1716 | break; | |
1717 | } | |
1718 | remaining -= n_queued; | |
1719 | } | |
36be0eb6 EG |
1720 | sleep_tx_count = cnt - remaining; |
1721 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) | |
1722 | mvmsta->sleep_tx_count = sleep_tx_count; | |
3e56eadf JB |
1723 | spin_unlock_bh(&mvmsta->lock); |
1724 | ||
36be0eb6 | 1725 | cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); |
3e56eadf JB |
1726 | if (WARN_ON(cnt - remaining == 0)) { |
1727 | ieee80211_sta_eosp(sta); | |
1728 | return; | |
1729 | } | |
1730 | } | |
1731 | ||
1732 | /* Note: this is ignored by firmware not supporting GO uAPSD */ | |
1733 | if (more_data) | |
1734 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); | |
1735 | ||
1736 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { | |
1737 | mvmsta->next_status_eosp = true; | |
1738 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); | |
1739 | } else { | |
1740 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); | |
1741 | } | |
8ca151b5 | 1742 | |
156f92f2 EG |
1743 | /* block the Tx queues until the FW updated the sleep Tx count */ |
1744 | iwl_trans_block_txq_ptrs(mvm->trans, true); | |
1745 | ||
1746 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, | |
1747 | CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, | |
1748 | sizeof(cmd), &cmd); | |
8ca151b5 JB |
1749 | if (ret) |
1750 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1751 | } | |
3e56eadf | 1752 | |
0416841d JB |
1753 | void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, |
1754 | struct iwl_rx_cmd_buffer *rxb) | |
3e56eadf JB |
1755 | { |
1756 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1757 | struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; | |
1758 | struct ieee80211_sta *sta; | |
1759 | u32 sta_id = le32_to_cpu(notif->sta_id); | |
1760 | ||
1761 | if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) | |
0416841d | 1762 | return; |
3e56eadf JB |
1763 | |
1764 | rcu_read_lock(); | |
1765 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1766 | if (!IS_ERR_OR_NULL(sta)) | |
1767 | ieee80211_sta_eosp(sta); | |
1768 | rcu_read_unlock(); | |
3e56eadf | 1769 | } |
09b0ce1a AO |
1770 | |
1771 | void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, | |
1772 | struct iwl_mvm_sta *mvmsta, bool disable) | |
1773 | { | |
1774 | struct iwl_mvm_add_sta_cmd cmd = { | |
1775 | .add_modify = STA_MODE_MODIFY, | |
1776 | .sta_id = mvmsta->sta_id, | |
1777 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
1778 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
1779 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), | |
1780 | }; | |
1781 | int ret; | |
1782 | ||
09b0ce1a AO |
1783 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); |
1784 | if (ret) | |
1785 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1786 | } | |
003e5236 AO |
1787 | |
1788 | void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, | |
1789 | struct ieee80211_sta *sta, | |
1790 | bool disable) | |
1791 | { | |
1792 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1793 | ||
1794 | spin_lock_bh(&mvm_sta->lock); | |
1795 | ||
1796 | if (mvm_sta->disable_tx == disable) { | |
1797 | spin_unlock_bh(&mvm_sta->lock); | |
1798 | return; | |
1799 | } | |
1800 | ||
1801 | mvm_sta->disable_tx = disable; | |
1802 | ||
1803 | /* | |
0d365ae5 SS |
1804 | * Tell mac80211 to start/stop queuing tx for this station, |
1805 | * but don't stop queuing if there are still pending frames | |
003e5236 AO |
1806 | * for this station. |
1807 | */ | |
1808 | if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) | |
1809 | ieee80211_sta_block_awake(mvm->hw, sta, disable); | |
1810 | ||
1811 | iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); | |
1812 | ||
1813 | spin_unlock_bh(&mvm_sta->lock); | |
1814 | } | |
1815 | ||
1816 | void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, | |
1817 | struct iwl_mvm_vif *mvmvif, | |
1818 | bool disable) | |
1819 | { | |
1820 | struct ieee80211_sta *sta; | |
1821 | struct iwl_mvm_sta *mvm_sta; | |
1822 | int i; | |
1823 | ||
1824 | lockdep_assert_held(&mvm->mutex); | |
1825 | ||
1826 | /* Block/unblock all the stations of the given mvmvif */ | |
1827 | for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { | |
1828 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], | |
1829 | lockdep_is_held(&mvm->mutex)); | |
1830 | if (IS_ERR_OR_NULL(sta)) | |
1831 | continue; | |
1832 | ||
1833 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1834 | if (mvm_sta->mac_id_n_color != | |
1835 | FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) | |
1836 | continue; | |
1837 | ||
1838 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); | |
1839 | } | |
1840 | } | |
dc88b4ba LC |
1841 | |
1842 | void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1843 | { | |
1844 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1845 | struct iwl_mvm_sta *mvmsta; | |
1846 | ||
1847 | rcu_read_lock(); | |
1848 | ||
1849 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); | |
1850 | ||
1851 | if (!WARN_ON(!mvmsta)) | |
1852 | iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); | |
1853 | ||
1854 | rcu_read_unlock(); | |
1855 | } |