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8ca151b5 JB |
1 | /****************************************************************************** |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
fa7878e7 AO |
8 | * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. |
9 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
854c5705 | 10 | * Copyright(c) 2016 Intel Deutschland GmbH |
8ca151b5 JB |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of version 2 of the GNU General Public License as | |
14 | * published by the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
24 | * USA | |
25 | * | |
26 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 27 | * in the file called COPYING. |
8ca151b5 JB |
28 | * |
29 | * Contact Information: | |
cb2f8277 | 30 | * Intel Linux Wireless <linuxwifi@intel.com> |
8ca151b5 JB |
31 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
32 | * | |
33 | * BSD LICENSE | |
34 | * | |
fa7878e7 AO |
35 | * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. |
36 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
854c5705 | 37 | * Copyright(c) 2016 Intel Deutschland GmbH |
8ca151b5 JB |
38 | * All rights reserved. |
39 | * | |
40 | * Redistribution and use in source and binary forms, with or without | |
41 | * modification, are permitted provided that the following conditions | |
42 | * are met: | |
43 | * | |
44 | * * Redistributions of source code must retain the above copyright | |
45 | * notice, this list of conditions and the following disclaimer. | |
46 | * * Redistributions in binary form must reproduce the above copyright | |
47 | * notice, this list of conditions and the following disclaimer in | |
48 | * the documentation and/or other materials provided with the | |
49 | * distribution. | |
50 | * * Neither the name Intel Corporation nor the names of its | |
51 | * contributors may be used to endorse or promote products derived | |
52 | * from this software without specific prior written permission. | |
53 | * | |
54 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
55 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
56 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
57 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
58 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
59 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
60 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
61 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
62 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
63 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
64 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
65 | * | |
66 | *****************************************************************************/ | |
67 | #include <net/mac80211.h> | |
68 | ||
69 | #include "mvm.h" | |
70 | #include "sta.h" | |
9ee718aa | 71 | #include "rs.h" |
8ca151b5 | 72 | |
854c5705 SS |
73 | /* |
74 | * New version of ADD_STA_sta command added new fields at the end of the | |
75 | * structure, so sending the size of the relevant API's structure is enough to | |
76 | * support both API versions. | |
77 | */ | |
78 | static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) | |
79 | { | |
80 | return iwl_mvm_has_new_rx_api(mvm) ? | |
81 | sizeof(struct iwl_mvm_add_sta_cmd) : | |
82 | sizeof(struct iwl_mvm_add_sta_cmd_v7); | |
83 | } | |
84 | ||
b92e661b EP |
85 | static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, |
86 | enum nl80211_iftype iftype) | |
8ca151b5 JB |
87 | { |
88 | int sta_id; | |
b92e661b | 89 | u32 reserved_ids = 0; |
8ca151b5 | 90 | |
b92e661b | 91 | BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32); |
8ca151b5 JB |
92 | WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); |
93 | ||
94 | lockdep_assert_held(&mvm->mutex); | |
95 | ||
b92e661b EP |
96 | /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ |
97 | if (iftype != NL80211_IFTYPE_STATION) | |
98 | reserved_ids = BIT(0); | |
99 | ||
8ca151b5 | 100 | /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ |
b92e661b EP |
101 | for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++) { |
102 | if (BIT(sta_id) & reserved_ids) | |
103 | continue; | |
104 | ||
8ca151b5 JB |
105 | if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], |
106 | lockdep_is_held(&mvm->mutex))) | |
107 | return sta_id; | |
b92e661b | 108 | } |
8ca151b5 JB |
109 | return IWL_MVM_STATION_COUNT; |
110 | } | |
111 | ||
7a453973 JB |
112 | /* send station add/update command to firmware */ |
113 | int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
114 | bool update) | |
8ca151b5 | 115 | { |
9d8ce6af | 116 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
4b8265ab EG |
117 | struct iwl_mvm_add_sta_cmd add_sta_cmd = { |
118 | .sta_id = mvm_sta->sta_id, | |
119 | .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), | |
120 | .add_modify = update ? 1 : 0, | |
121 | .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | | |
122 | STA_FLG_MIMO_EN_MSK), | |
cf0cda19 | 123 | .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), |
4b8265ab | 124 | }; |
8ca151b5 JB |
125 | int ret; |
126 | u32 status; | |
127 | u32 agg_size = 0, mpdu_dens = 0; | |
128 | ||
7a453973 JB |
129 | if (!update) { |
130 | add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
131 | memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); | |
132 | } | |
5bc5aaad JB |
133 | |
134 | switch (sta->bandwidth) { | |
135 | case IEEE80211_STA_RX_BW_160: | |
136 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); | |
137 | /* fall through */ | |
138 | case IEEE80211_STA_RX_BW_80: | |
139 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); | |
140 | /* fall through */ | |
141 | case IEEE80211_STA_RX_BW_40: | |
142 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); | |
143 | /* fall through */ | |
144 | case IEEE80211_STA_RX_BW_20: | |
145 | if (sta->ht_cap.ht_supported) | |
146 | add_sta_cmd.station_flags |= | |
147 | cpu_to_le32(STA_FLG_FAT_EN_20MHZ); | |
148 | break; | |
149 | } | |
150 | ||
151 | switch (sta->rx_nss) { | |
152 | case 1: | |
153 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
154 | break; | |
155 | case 2: | |
156 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); | |
157 | break; | |
158 | case 3 ... 8: | |
159 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); | |
160 | break; | |
161 | } | |
162 | ||
163 | switch (sta->smps_mode) { | |
164 | case IEEE80211_SMPS_AUTOMATIC: | |
165 | case IEEE80211_SMPS_NUM_MODES: | |
166 | WARN_ON(1); | |
167 | break; | |
168 | case IEEE80211_SMPS_STATIC: | |
169 | /* override NSS */ | |
170 | add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); | |
171 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
172 | break; | |
173 | case IEEE80211_SMPS_DYNAMIC: | |
174 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); | |
175 | break; | |
176 | case IEEE80211_SMPS_OFF: | |
177 | /* nothing */ | |
178 | break; | |
179 | } | |
8ca151b5 JB |
180 | |
181 | if (sta->ht_cap.ht_supported) { | |
182 | add_sta_cmd.station_flags_msk |= | |
183 | cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | | |
184 | STA_FLG_AGG_MPDU_DENS_MSK); | |
185 | ||
186 | mpdu_dens = sta->ht_cap.ampdu_density; | |
187 | } | |
188 | ||
189 | if (sta->vht_cap.vht_supported) { | |
190 | agg_size = sta->vht_cap.cap & | |
191 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; | |
192 | agg_size >>= | |
193 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; | |
194 | } else if (sta->ht_cap.ht_supported) { | |
195 | agg_size = sta->ht_cap.ampdu_factor; | |
196 | } | |
197 | ||
198 | add_sta_cmd.station_flags |= | |
199 | cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); | |
200 | add_sta_cmd.station_flags |= | |
201 | cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); | |
202 | ||
203 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
204 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
205 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 206 | &add_sta_cmd, &status); |
8ca151b5 JB |
207 | if (ret) |
208 | return ret; | |
209 | ||
837c4da9 | 210 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
211 | case ADD_STA_SUCCESS: |
212 | IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); | |
213 | break; | |
214 | default: | |
215 | ret = -EIO; | |
216 | IWL_ERR(mvm, "ADD_STA failed\n"); | |
217 | break; | |
218 | } | |
219 | ||
220 | return ret; | |
221 | } | |
222 | ||
a0f6bf2a AN |
223 | static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm, |
224 | struct ieee80211_sta *sta) | |
225 | { | |
226 | unsigned long used_hw_queues; | |
227 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
5d42e7b2 EG |
228 | unsigned int wdg_timeout = |
229 | iwl_mvm_get_wd_timeout(mvm, NULL, true, false); | |
a0f6bf2a AN |
230 | u32 ac; |
231 | ||
232 | lockdep_assert_held(&mvm->mutex); | |
233 | ||
234 | used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL); | |
235 | ||
236 | /* Find available queues, and allocate them to the ACs */ | |
237 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
238 | u8 queue = find_first_zero_bit(&used_hw_queues, | |
239 | mvm->first_agg_queue); | |
240 | ||
241 | if (queue >= mvm->first_agg_queue) { | |
242 | IWL_ERR(mvm, "Failed to allocate STA queue\n"); | |
243 | return -EBUSY; | |
244 | } | |
245 | ||
246 | __set_bit(queue, &used_hw_queues); | |
247 | mvmsta->hw_queue[ac] = queue; | |
248 | } | |
249 | ||
250 | /* Found a place for all queues - enable them */ | |
251 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
252 | iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac], | |
4ecafae9 | 253 | mvmsta->hw_queue[ac], |
5c1156ef LK |
254 | iwl_mvm_ac_to_tx_fifo[ac], 0, |
255 | wdg_timeout); | |
a0f6bf2a AN |
256 | mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]); |
257 | } | |
258 | ||
259 | return 0; | |
260 | } | |
261 | ||
262 | static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm, | |
263 | struct ieee80211_sta *sta) | |
264 | { | |
265 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
266 | unsigned long sta_msk; | |
267 | int i; | |
268 | ||
269 | lockdep_assert_held(&mvm->mutex); | |
270 | ||
271 | /* disable the TDLS STA-specific queues */ | |
272 | sta_msk = mvmsta->tfd_queue_msk; | |
a4ca3ed4 | 273 | for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE) |
06ecdba3 | 274 | iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0); |
a0f6bf2a AN |
275 | } |
276 | ||
8ca151b5 JB |
277 | int iwl_mvm_add_sta(struct iwl_mvm *mvm, |
278 | struct ieee80211_vif *vif, | |
279 | struct ieee80211_sta *sta) | |
280 | { | |
281 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 282 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
283 | int i, ret, sta_id; |
284 | ||
285 | lockdep_assert_held(&mvm->mutex); | |
286 | ||
287 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) | |
b92e661b EP |
288 | sta_id = iwl_mvm_find_free_sta_id(mvm, |
289 | ieee80211_vif_type_p2p(vif)); | |
8ca151b5 JB |
290 | else |
291 | sta_id = mvm_sta->sta_id; | |
292 | ||
36f4631c | 293 | if (sta_id == IWL_MVM_STATION_COUNT) |
8ca151b5 JB |
294 | return -ENOSPC; |
295 | ||
296 | spin_lock_init(&mvm_sta->lock); | |
297 | ||
298 | mvm_sta->sta_id = sta_id; | |
299 | mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, | |
300 | mvmvif->color); | |
301 | mvm_sta->vif = vif; | |
302 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
9ee718aa EL |
303 | mvm_sta->tx_protection = 0; |
304 | mvm_sta->tt_tx_protection = false; | |
8ca151b5 JB |
305 | |
306 | /* HW restart, don't assume the memory has been zeroed */ | |
e3d4bc8c | 307 | atomic_set(&mvm->pending_frames[sta_id], 0); |
69191afe | 308 | mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ |
8ca151b5 | 309 | mvm_sta->tfd_queue_msk = 0; |
a0f6bf2a AN |
310 | |
311 | /* allocate new queues for a TDLS station */ | |
312 | if (sta->tdls) { | |
313 | ret = iwl_mvm_tdls_sta_init(mvm, sta); | |
314 | if (ret) | |
315 | return ret; | |
316 | } else { | |
317 | for (i = 0; i < IEEE80211_NUM_ACS; i++) | |
318 | if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) | |
319 | mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); | |
320 | } | |
8ca151b5 | 321 | |
6d9d32b8 JB |
322 | /* for HW restart - reset everything but the sequence number */ |
323 | for (i = 0; i < IWL_MAX_TID_COUNT; i++) { | |
324 | u16 seq = mvm_sta->tid_data[i].seq_number; | |
325 | memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); | |
326 | mvm_sta->tid_data[i].seq_number = seq; | |
327 | } | |
efed6640 | 328 | mvm_sta->agg_tids = 0; |
8ca151b5 | 329 | |
7a453973 | 330 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, false); |
8ca151b5 | 331 | if (ret) |
a0f6bf2a | 332 | goto err; |
8ca151b5 | 333 | |
9e848010 JB |
334 | if (vif->type == NL80211_IFTYPE_STATION) { |
335 | if (!sta->tdls) { | |
336 | WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); | |
337 | mvmvif->ap_sta_id = sta_id; | |
338 | } else { | |
339 | WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); | |
340 | } | |
341 | } | |
8ca151b5 JB |
342 | |
343 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); | |
344 | ||
345 | return 0; | |
a0f6bf2a AN |
346 | |
347 | err: | |
348 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
349 | return ret; | |
8ca151b5 JB |
350 | } |
351 | ||
7a453973 JB |
352 | int iwl_mvm_update_sta(struct iwl_mvm *mvm, |
353 | struct ieee80211_vif *vif, | |
354 | struct ieee80211_sta *sta) | |
355 | { | |
356 | return iwl_mvm_sta_send_to_fw(mvm, sta, true); | |
357 | } | |
358 | ||
8ca151b5 JB |
359 | int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, |
360 | bool drain) | |
361 | { | |
f9dc0004 | 362 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
363 | int ret; |
364 | u32 status; | |
365 | ||
366 | lockdep_assert_held(&mvm->mutex); | |
367 | ||
368 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
369 | cmd.sta_id = mvmsta->sta_id; | |
370 | cmd.add_modify = STA_MODE_MODIFY; | |
371 | cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; | |
372 | cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); | |
373 | ||
374 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
375 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
376 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 377 | &cmd, &status); |
8ca151b5 JB |
378 | if (ret) |
379 | return ret; | |
380 | ||
837c4da9 | 381 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
382 | case ADD_STA_SUCCESS: |
383 | IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", | |
384 | mvmsta->sta_id); | |
385 | break; | |
386 | default: | |
387 | ret = -EIO; | |
388 | IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", | |
389 | mvmsta->sta_id); | |
390 | break; | |
391 | } | |
392 | ||
393 | return ret; | |
394 | } | |
395 | ||
396 | /* | |
397 | * Remove a station from the FW table. Before sending the command to remove | |
398 | * the station validate that the station is indeed known to the driver (sanity | |
399 | * only). | |
400 | */ | |
401 | static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) | |
402 | { | |
403 | struct ieee80211_sta *sta; | |
404 | struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { | |
405 | .sta_id = sta_id, | |
406 | }; | |
407 | int ret; | |
408 | ||
409 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
410 | lockdep_is_held(&mvm->mutex)); | |
411 | ||
412 | /* Note: internal stations are marked as error values */ | |
413 | if (!sta) { | |
414 | IWL_ERR(mvm, "Invalid station id\n"); | |
415 | return -EINVAL; | |
416 | } | |
417 | ||
a1022927 | 418 | ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, |
8ca151b5 JB |
419 | sizeof(rm_sta_cmd), &rm_sta_cmd); |
420 | if (ret) { | |
421 | IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); | |
422 | return ret; | |
423 | } | |
424 | ||
425 | return 0; | |
426 | } | |
427 | ||
428 | void iwl_mvm_sta_drained_wk(struct work_struct *wk) | |
429 | { | |
430 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); | |
431 | u8 sta_id; | |
432 | ||
433 | /* | |
434 | * The mutex is needed because of the SYNC cmd, but not only: if the | |
435 | * work would run concurrently with iwl_mvm_rm_sta, it would run before | |
436 | * iwl_mvm_rm_sta sets the station as busy, and exit. Then | |
437 | * iwl_mvm_rm_sta would set the station as busy, and nobody will clean | |
438 | * that later. | |
439 | */ | |
440 | mutex_lock(&mvm->mutex); | |
441 | ||
442 | for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { | |
443 | int ret; | |
444 | struct ieee80211_sta *sta = | |
445 | rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
446 | lockdep_is_held(&mvm->mutex)); | |
447 | ||
1ddbbb0c JB |
448 | /* |
449 | * This station is in use or RCU-removed; the latter happens in | |
450 | * managed mode, where mac80211 removes the station before we | |
451 | * can remove it from firmware (we can only do that after the | |
452 | * MAC is marked unassociated), and possibly while the deauth | |
453 | * frame to disconnect from the AP is still queued. Then, the | |
454 | * station pointer is -ENOENT when the last skb is reclaimed. | |
455 | */ | |
456 | if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) | |
8ca151b5 JB |
457 | continue; |
458 | ||
459 | if (PTR_ERR(sta) == -EINVAL) { | |
460 | IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", | |
461 | sta_id); | |
462 | continue; | |
463 | } | |
464 | ||
465 | if (!sta) { | |
466 | IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", | |
467 | sta_id); | |
468 | continue; | |
469 | } | |
470 | ||
471 | WARN_ON(PTR_ERR(sta) != -EBUSY); | |
472 | /* This station was removed and we waited until it got drained, | |
473 | * we can now proceed and remove it. | |
474 | */ | |
475 | ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
476 | if (ret) { | |
477 | IWL_ERR(mvm, | |
478 | "Couldn't remove sta %d after it was drained\n", | |
479 | sta_id); | |
480 | continue; | |
481 | } | |
c531c771 | 482 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 | 483 | clear_bit(sta_id, mvm->sta_drained); |
a0f6bf2a AN |
484 | |
485 | if (mvm->tfd_drained[sta_id]) { | |
486 | unsigned long i, msk = mvm->tfd_drained[sta_id]; | |
487 | ||
a4ca3ed4 | 488 | for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) |
06ecdba3 AN |
489 | iwl_mvm_disable_txq(mvm, i, i, |
490 | IWL_MAX_TID_COUNT, 0); | |
a0f6bf2a AN |
491 | |
492 | mvm->tfd_drained[sta_id] = 0; | |
493 | IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", | |
494 | sta_id, msk); | |
495 | } | |
8ca151b5 JB |
496 | } |
497 | ||
498 | mutex_unlock(&mvm->mutex); | |
499 | } | |
500 | ||
501 | int iwl_mvm_rm_sta(struct iwl_mvm *mvm, | |
502 | struct ieee80211_vif *vif, | |
503 | struct ieee80211_sta *sta) | |
504 | { | |
505 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 506 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
507 | int ret; |
508 | ||
509 | lockdep_assert_held(&mvm->mutex); | |
510 | ||
511 | if (vif->type == NL80211_IFTYPE_STATION && | |
512 | mvmvif->ap_sta_id == mvm_sta->sta_id) { | |
fe92e32a EG |
513 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
514 | if (ret) | |
515 | return ret; | |
80d85655 | 516 | /* flush its queues here since we are freeing mvm_sta */ |
5888a40c | 517 | ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); |
fe92e32a EG |
518 | if (ret) |
519 | return ret; | |
520 | ret = iwl_trans_wait_tx_queue_empty(mvm->trans, | |
521 | mvm_sta->tfd_queue_msk); | |
522 | if (ret) | |
523 | return ret; | |
524 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); | |
80d85655 | 525 | |
8ca151b5 JB |
526 | /* if we are associated - we can't remove the AP STA now */ |
527 | if (vif->bss_conf.assoc) | |
528 | return ret; | |
529 | ||
530 | /* unassoc - go ahead - remove the AP STA now */ | |
531 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
37577fe2 EP |
532 | |
533 | /* clear d0i3_ap_sta_id if no longer relevant */ | |
534 | if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) | |
535 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
8ca151b5 JB |
536 | } |
537 | ||
1d3c3f63 AN |
538 | /* |
539 | * This shouldn't happen - the TDLS channel switch should be canceled | |
540 | * before the STA is removed. | |
541 | */ | |
542 | if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { | |
543 | mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; | |
544 | cancel_delayed_work(&mvm->tdls_cs.dwork); | |
545 | } | |
546 | ||
e3d4bc8c EG |
547 | /* |
548 | * Make sure that the tx response code sees the station as -EBUSY and | |
549 | * calls the drain worker. | |
550 | */ | |
551 | spin_lock_bh(&mvm_sta->lock); | |
8ca151b5 JB |
552 | /* |
553 | * There are frames pending on the AC queues for this station. | |
554 | * We need to wait until all the frames are drained... | |
555 | */ | |
e3d4bc8c | 556 | if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { |
8ca151b5 JB |
557 | rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], |
558 | ERR_PTR(-EBUSY)); | |
e3d4bc8c | 559 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
560 | |
561 | /* disable TDLS sta queues on drain complete */ | |
562 | if (sta->tdls) { | |
563 | mvm->tfd_drained[mvm_sta->sta_id] = | |
564 | mvm_sta->tfd_queue_msk; | |
565 | IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", | |
566 | mvm_sta->sta_id); | |
567 | } | |
568 | ||
e3d4bc8c | 569 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
8ca151b5 | 570 | } else { |
e3d4bc8c | 571 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
572 | |
573 | if (sta->tdls) | |
574 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
575 | ||
8ca151b5 | 576 | ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); |
c531c771 | 577 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); |
8ca151b5 JB |
578 | } |
579 | ||
580 | return ret; | |
581 | } | |
582 | ||
583 | int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, | |
584 | struct ieee80211_vif *vif, | |
585 | u8 sta_id) | |
586 | { | |
587 | int ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
588 | ||
589 | lockdep_assert_held(&mvm->mutex); | |
590 | ||
c531c771 | 591 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 JB |
592 | return ret; |
593 | } | |
594 | ||
0e39eb03 CRI |
595 | int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, |
596 | struct iwl_mvm_int_sta *sta, | |
597 | u32 qmask, enum nl80211_iftype iftype) | |
8ca151b5 JB |
598 | { |
599 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
b92e661b | 600 | sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); |
8ca151b5 JB |
601 | if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) |
602 | return -ENOSPC; | |
603 | } | |
604 | ||
605 | sta->tfd_queue_msk = qmask; | |
606 | ||
607 | /* put a non-NULL value so iterating over the stations won't stop */ | |
608 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); | |
609 | return 0; | |
610 | } | |
611 | ||
712b24ad JB |
612 | static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, |
613 | struct iwl_mvm_int_sta *sta) | |
8ca151b5 | 614 | { |
c531c771 | 615 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); |
8ca151b5 JB |
616 | memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); |
617 | sta->sta_id = IWL_MVM_STATION_COUNT; | |
618 | } | |
619 | ||
620 | static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, | |
621 | struct iwl_mvm_int_sta *sta, | |
622 | const u8 *addr, | |
623 | u16 mac_id, u16 color) | |
624 | { | |
f9dc0004 | 625 | struct iwl_mvm_add_sta_cmd cmd; |
8ca151b5 JB |
626 | int ret; |
627 | u32 status; | |
628 | ||
629 | lockdep_assert_held(&mvm->mutex); | |
630 | ||
f9dc0004 | 631 | memset(&cmd, 0, sizeof(cmd)); |
8ca151b5 JB |
632 | cmd.sta_id = sta->sta_id; |
633 | cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, | |
634 | color)); | |
635 | ||
636 | cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); | |
cf0cda19 | 637 | cmd.tid_disable_tx = cpu_to_le16(0xffff); |
8ca151b5 JB |
638 | |
639 | if (addr) | |
640 | memcpy(cmd.addr, addr, ETH_ALEN); | |
641 | ||
854c5705 SS |
642 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
643 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 644 | &cmd, &status); |
8ca151b5 JB |
645 | if (ret) |
646 | return ret; | |
647 | ||
837c4da9 | 648 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
649 | case ADD_STA_SUCCESS: |
650 | IWL_DEBUG_INFO(mvm, "Internal station added.\n"); | |
651 | return 0; | |
652 | default: | |
653 | ret = -EIO; | |
654 | IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", | |
655 | status); | |
656 | break; | |
657 | } | |
658 | return ret; | |
659 | } | |
660 | ||
661 | int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) | |
662 | { | |
4cf677fd EG |
663 | unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? |
664 | mvm->cfg->base_params->wd_timeout : | |
665 | IWL_WATCHDOG_DISABLED; | |
8ca151b5 JB |
666 | int ret; |
667 | ||
668 | lockdep_assert_held(&mvm->mutex); | |
669 | ||
7da91b0e | 670 | /* Map Aux queue to fifo - needs to happen before adding Aux station */ |
4ecafae9 | 671 | iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, |
5c1156ef | 672 | IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); |
7da91b0e AM |
673 | |
674 | /* Allocate aux station and assign to it the aux queue */ | |
675 | ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), | |
b92e661b | 676 | NL80211_IFTYPE_UNSPECIFIED); |
8ca151b5 JB |
677 | if (ret) |
678 | return ret; | |
679 | ||
680 | ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, | |
681 | MAC_INDEX_AUX, 0); | |
682 | ||
683 | if (ret) | |
684 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
685 | return ret; | |
686 | } | |
687 | ||
0e39eb03 CRI |
688 | int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
689 | { | |
690 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
691 | ||
692 | lockdep_assert_held(&mvm->mutex); | |
693 | return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, | |
694 | mvmvif->id, 0); | |
695 | } | |
696 | ||
697 | int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
698 | { | |
699 | int ret; | |
700 | ||
701 | lockdep_assert_held(&mvm->mutex); | |
702 | ||
703 | ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); | |
704 | if (ret) | |
705 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
706 | ||
707 | return ret; | |
708 | } | |
709 | ||
710 | void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) | |
711 | { | |
712 | iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); | |
713 | } | |
714 | ||
712b24ad JB |
715 | void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) |
716 | { | |
717 | lockdep_assert_held(&mvm->mutex); | |
718 | ||
719 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
720 | } | |
721 | ||
8ca151b5 JB |
722 | /* |
723 | * Send the add station command for the vif's broadcast station. | |
724 | * Assumes that the station was already allocated. | |
725 | * | |
726 | * @mvm: the mvm component | |
727 | * @vif: the interface to which the broadcast station is added | |
728 | * @bsta: the broadcast station to add. | |
729 | */ | |
013290aa | 730 | int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
731 | { |
732 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 733 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
5023d966 | 734 | static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
a4243402 | 735 | const u8 *baddr = _baddr; |
8ca151b5 JB |
736 | |
737 | lockdep_assert_held(&mvm->mutex); | |
738 | ||
5023d966 JB |
739 | if (vif->type == NL80211_IFTYPE_ADHOC) |
740 | baddr = vif->bss_conf.bssid; | |
741 | ||
8ca151b5 JB |
742 | if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) |
743 | return -ENOSPC; | |
744 | ||
745 | return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, | |
746 | mvmvif->id, mvmvif->color); | |
747 | } | |
748 | ||
749 | /* Send the FW a request to remove the station from it's internal data | |
750 | * structures, but DO NOT remove the entry from the local data structures. */ | |
013290aa | 751 | int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 | 752 | { |
013290aa | 753 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
754 | int ret; |
755 | ||
756 | lockdep_assert_held(&mvm->mutex); | |
757 | ||
013290aa | 758 | ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); |
8ca151b5 JB |
759 | if (ret) |
760 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
761 | return ret; | |
762 | } | |
763 | ||
013290aa JB |
764 | int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
765 | { | |
766 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
767 | u32 qmask; | |
768 | ||
769 | lockdep_assert_held(&mvm->mutex); | |
770 | ||
d92b732e | 771 | qmask = iwl_mvm_mac_get_queues_mask(vif); |
013290aa JB |
772 | |
773 | /* | |
774 | * The firmware defines the TFD queue mask to only be relevant | |
775 | * for *unicast* queues, so the multicast (CAB) queue shouldn't | |
776 | * be included. | |
777 | */ | |
778 | if (vif->type == NL80211_IFTYPE_AP) | |
779 | qmask &= ~BIT(vif->cab_queue); | |
780 | ||
781 | return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, | |
782 | ieee80211_vif_type_p2p(vif)); | |
783 | } | |
784 | ||
8ca151b5 JB |
785 | /* Allocate a new station entry for the broadcast station to the given vif, |
786 | * and send it to the FW. | |
787 | * Note that each P2P mac should have its own broadcast station. | |
788 | * | |
789 | * @mvm: the mvm component | |
790 | * @vif: the interface to which the broadcast station is added | |
791 | * @bsta: the broadcast station to add. */ | |
013290aa | 792 | int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
793 | { |
794 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 795 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
8ca151b5 JB |
796 | int ret; |
797 | ||
798 | lockdep_assert_held(&mvm->mutex); | |
799 | ||
013290aa | 800 | ret = iwl_mvm_alloc_bcast_sta(mvm, vif); |
8ca151b5 JB |
801 | if (ret) |
802 | return ret; | |
803 | ||
013290aa | 804 | ret = iwl_mvm_send_add_bcast_sta(mvm, vif); |
8ca151b5 JB |
805 | |
806 | if (ret) | |
807 | iwl_mvm_dealloc_int_sta(mvm, bsta); | |
013290aa | 808 | |
8ca151b5 JB |
809 | return ret; |
810 | } | |
811 | ||
013290aa JB |
812 | void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
813 | { | |
814 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
815 | ||
816 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
817 | } | |
818 | ||
8ca151b5 JB |
819 | /* |
820 | * Send the FW a request to remove the station from it's internal data | |
821 | * structures, and in addition remove it from the local data structure. | |
822 | */ | |
013290aa | 823 | int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
824 | { |
825 | int ret; | |
826 | ||
827 | lockdep_assert_held(&mvm->mutex); | |
828 | ||
013290aa JB |
829 | ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); |
830 | ||
831 | iwl_mvm_dealloc_bcast_sta(mvm, vif); | |
8ca151b5 | 832 | |
8ca151b5 JB |
833 | return ret; |
834 | } | |
835 | ||
113a0447 EG |
836 | #define IWL_MAX_RX_BA_SESSIONS 16 |
837 | ||
8ca151b5 | 838 | int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
854c5705 | 839 | int tid, u16 ssn, bool start, u8 buf_size) |
8ca151b5 | 840 | { |
9d8ce6af | 841 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 842 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
843 | int ret; |
844 | u32 status; | |
845 | ||
846 | lockdep_assert_held(&mvm->mutex); | |
847 | ||
113a0447 EG |
848 | if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { |
849 | IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); | |
850 | return -ENOSPC; | |
851 | } | |
852 | ||
8ca151b5 JB |
853 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
854 | cmd.sta_id = mvm_sta->sta_id; | |
855 | cmd.add_modify = STA_MODE_MODIFY; | |
93a42667 EG |
856 | if (start) { |
857 | cmd.add_immediate_ba_tid = (u8) tid; | |
858 | cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
854c5705 | 859 | cmd.rx_ba_window = cpu_to_le16((u16)buf_size); |
93a42667 EG |
860 | } else { |
861 | cmd.remove_immediate_ba_tid = (u8) tid; | |
862 | } | |
8ca151b5 JB |
863 | cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : |
864 | STA_MODIFY_REMOVE_BA_TID; | |
865 | ||
866 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
867 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
868 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 869 | &cmd, &status); |
8ca151b5 JB |
870 | if (ret) |
871 | return ret; | |
872 | ||
837c4da9 | 873 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
874 | case ADD_STA_SUCCESS: |
875 | IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", | |
876 | start ? "start" : "stopp"); | |
877 | break; | |
878 | case ADD_STA_IMMEDIATE_BA_FAILURE: | |
879 | IWL_WARN(mvm, "RX BA Session refused by fw\n"); | |
880 | ret = -ENOSPC; | |
881 | break; | |
882 | default: | |
883 | ret = -EIO; | |
884 | IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", | |
885 | start ? "start" : "stopp", status); | |
886 | break; | |
887 | } | |
888 | ||
113a0447 EG |
889 | if (!ret) { |
890 | if (start) | |
891 | mvm->rx_ba_sessions++; | |
892 | else if (mvm->rx_ba_sessions > 0) | |
893 | /* check that restart flow didn't zero the counter */ | |
894 | mvm->rx_ba_sessions--; | |
895 | } | |
896 | ||
8ca151b5 JB |
897 | return ret; |
898 | } | |
899 | ||
900 | static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
901 | int tid, u8 queue, bool start) | |
902 | { | |
9d8ce6af | 903 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 904 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
905 | int ret; |
906 | u32 status; | |
907 | ||
908 | lockdep_assert_held(&mvm->mutex); | |
909 | ||
910 | if (start) { | |
911 | mvm_sta->tfd_queue_msk |= BIT(queue); | |
912 | mvm_sta->tid_disable_agg &= ~BIT(tid); | |
913 | } else { | |
914 | mvm_sta->tfd_queue_msk &= ~BIT(queue); | |
915 | mvm_sta->tid_disable_agg |= BIT(tid); | |
916 | } | |
917 | ||
918 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); | |
919 | cmd.sta_id = mvm_sta->sta_id; | |
920 | cmd.add_modify = STA_MODE_MODIFY; | |
921 | cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; | |
922 | cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
923 | cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); | |
924 | ||
925 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
926 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
927 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 928 | &cmd, &status); |
8ca151b5 JB |
929 | if (ret) |
930 | return ret; | |
931 | ||
837c4da9 | 932 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
933 | case ADD_STA_SUCCESS: |
934 | break; | |
935 | default: | |
936 | ret = -EIO; | |
937 | IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", | |
938 | start ? "start" : "stopp", status); | |
939 | break; | |
940 | } | |
941 | ||
942 | return ret; | |
943 | } | |
944 | ||
b797e3fb | 945 | const u8 tid_to_mac80211_ac[] = { |
8ca151b5 JB |
946 | IEEE80211_AC_BE, |
947 | IEEE80211_AC_BK, | |
948 | IEEE80211_AC_BK, | |
949 | IEEE80211_AC_BE, | |
950 | IEEE80211_AC_VI, | |
951 | IEEE80211_AC_VI, | |
952 | IEEE80211_AC_VO, | |
953 | IEEE80211_AC_VO, | |
954 | }; | |
955 | ||
3e56eadf JB |
956 | static const u8 tid_to_ucode_ac[] = { |
957 | AC_BE, | |
958 | AC_BK, | |
959 | AC_BK, | |
960 | AC_BE, | |
961 | AC_VI, | |
962 | AC_VI, | |
963 | AC_VO, | |
964 | AC_VO, | |
965 | }; | |
966 | ||
8ca151b5 JB |
967 | int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
968 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) | |
969 | { | |
5b577a90 | 970 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
971 | struct iwl_mvm_tid_data *tid_data; |
972 | int txq_id; | |
4ecafae9 | 973 | int ret; |
8ca151b5 JB |
974 | |
975 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
976 | return -EINVAL; | |
977 | ||
978 | if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { | |
979 | IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", | |
980 | mvmsta->tid_data[tid].state); | |
981 | return -ENXIO; | |
982 | } | |
983 | ||
984 | lockdep_assert_held(&mvm->mutex); | |
985 | ||
b2492501 AN |
986 | spin_lock_bh(&mvmsta->lock); |
987 | ||
988 | /* possible race condition - we entered D0i3 while starting agg */ | |
989 | if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { | |
990 | spin_unlock_bh(&mvmsta->lock); | |
991 | IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); | |
992 | return -EIO; | |
993 | } | |
994 | ||
4ecafae9 LK |
995 | spin_lock_bh(&mvm->queue_info_lock); |
996 | ||
997 | txq_id = iwl_mvm_find_free_queue(mvm, mvm->first_agg_queue, | |
998 | mvm->last_agg_queue); | |
999 | if (txq_id < 0) { | |
1000 | ret = txq_id; | |
1001 | spin_unlock_bh(&mvm->queue_info_lock); | |
1002 | IWL_ERR(mvm, "Failed to allocate agg queue\n"); | |
1003 | goto release_locks; | |
1004 | } | |
1005 | mvm->queue_info[txq_id].setup_reserved = true; | |
1006 | spin_unlock_bh(&mvm->queue_info_lock); | |
8ca151b5 | 1007 | |
8ca151b5 | 1008 | tid_data = &mvmsta->tid_data[tid]; |
9a886586 | 1009 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1010 | tid_data->txq_id = txq_id; |
1011 | *ssn = tid_data->ssn; | |
1012 | ||
1013 | IWL_DEBUG_TX_QUEUES(mvm, | |
1014 | "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", | |
1015 | mvmsta->sta_id, tid, txq_id, tid_data->ssn, | |
1016 | tid_data->next_reclaimed); | |
1017 | ||
1018 | if (tid_data->ssn == tid_data->next_reclaimed) { | |
1019 | tid_data->state = IWL_AGG_STARTING; | |
1020 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1021 | } else { | |
1022 | tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
1023 | } | |
1024 | ||
4ecafae9 LK |
1025 | ret = 0; |
1026 | ||
1027 | release_locks: | |
8ca151b5 JB |
1028 | spin_unlock_bh(&mvmsta->lock); |
1029 | ||
4ecafae9 | 1030 | return ret; |
8ca151b5 JB |
1031 | } |
1032 | ||
1033 | int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
bb81bb68 EG |
1034 | struct ieee80211_sta *sta, u16 tid, u8 buf_size, |
1035 | bool amsdu) | |
8ca151b5 | 1036 | { |
5b577a90 | 1037 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 1038 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
5d42e7b2 EG |
1039 | unsigned int wdg_timeout = |
1040 | iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); | |
8ca151b5 JB |
1041 | int queue, fifo, ret; |
1042 | u16 ssn; | |
1043 | ||
efed6640 ES |
1044 | BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) |
1045 | != IWL_MAX_TID_COUNT); | |
1046 | ||
8ca151b5 JB |
1047 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); |
1048 | ||
1049 | spin_lock_bh(&mvmsta->lock); | |
1050 | ssn = tid_data->ssn; | |
1051 | queue = tid_data->txq_id; | |
1052 | tid_data->state = IWL_AGG_ON; | |
efed6640 | 1053 | mvmsta->agg_tids |= BIT(tid); |
8ca151b5 | 1054 | tid_data->ssn = 0xffff; |
bb81bb68 | 1055 | tid_data->amsdu_in_ampdu_allowed = amsdu; |
8ca151b5 JB |
1056 | spin_unlock_bh(&mvmsta->lock); |
1057 | ||
3e56eadf | 1058 | fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; |
8ca151b5 | 1059 | |
4ecafae9 LK |
1060 | iwl_mvm_enable_agg_txq(mvm, queue, |
1061 | vif->hw_queue[tid_to_mac80211_ac[tid]], fifo, | |
1062 | mvmsta->sta_id, tid, buf_size, ssn, wdg_timeout); | |
fa7878e7 | 1063 | |
8ca151b5 JB |
1064 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); |
1065 | if (ret) | |
1066 | return -EIO; | |
1067 | ||
4ecafae9 LK |
1068 | /* No need to mark as reserved */ |
1069 | spin_lock_bh(&mvm->queue_info_lock); | |
1070 | mvm->queue_info[queue].setup_reserved = false; | |
1071 | spin_unlock_bh(&mvm->queue_info_lock); | |
1072 | ||
8ca151b5 JB |
1073 | /* |
1074 | * Even though in theory the peer could have different | |
1075 | * aggregation reorder buffer sizes for different sessions, | |
1076 | * our ucode doesn't allow for that and has a global limit | |
1077 | * for each station. Therefore, use the minimum of all the | |
1078 | * aggregation sessions and our default value. | |
1079 | */ | |
1080 | mvmsta->max_agg_bufsize = | |
1081 | min(mvmsta->max_agg_bufsize, buf_size); | |
1082 | mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; | |
1083 | ||
9ee718aa EL |
1084 | IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", |
1085 | sta->addr, tid); | |
1086 | ||
9e680946 | 1087 | return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); |
8ca151b5 JB |
1088 | } |
1089 | ||
1090 | int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1091 | struct ieee80211_sta *sta, u16 tid) | |
1092 | { | |
5b577a90 | 1093 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1094 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1095 | u16 txq_id; | |
1096 | int err; | |
1097 | ||
f9aa8dd3 EG |
1098 | |
1099 | /* | |
1100 | * If mac80211 is cleaning its state, then say that we finished since | |
1101 | * our state has been cleared anyway. | |
1102 | */ | |
1103 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
1104 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1105 | return 0; | |
1106 | } | |
1107 | ||
8ca151b5 JB |
1108 | spin_lock_bh(&mvmsta->lock); |
1109 | ||
1110 | txq_id = tid_data->txq_id; | |
1111 | ||
1112 | IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", | |
1113 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
1114 | ||
efed6640 ES |
1115 | mvmsta->agg_tids &= ~BIT(tid); |
1116 | ||
4ecafae9 LK |
1117 | /* No need to mark as reserved anymore */ |
1118 | spin_lock_bh(&mvm->queue_info_lock); | |
1119 | mvm->queue_info[txq_id].setup_reserved = false; | |
1120 | spin_unlock_bh(&mvm->queue_info_lock); | |
1121 | ||
8ca151b5 JB |
1122 | switch (tid_data->state) { |
1123 | case IWL_AGG_ON: | |
9a886586 | 1124 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1125 | |
1126 | IWL_DEBUG_TX_QUEUES(mvm, | |
1127 | "ssn = %d, next_recl = %d\n", | |
1128 | tid_data->ssn, tid_data->next_reclaimed); | |
1129 | ||
1130 | /* There are still packets for this RA / TID in the HW */ | |
1131 | if (tid_data->ssn != tid_data->next_reclaimed) { | |
1132 | tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; | |
1133 | err = 0; | |
1134 | break; | |
1135 | } | |
1136 | ||
1137 | tid_data->ssn = 0xffff; | |
f7f89e7b | 1138 | tid_data->state = IWL_AGG_OFF; |
f7f89e7b JB |
1139 | spin_unlock_bh(&mvmsta->lock); |
1140 | ||
1141 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1142 | ||
1143 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); | |
1144 | ||
4ecafae9 LK |
1145 | iwl_mvm_disable_txq(mvm, txq_id, |
1146 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1147 | 0); | |
f7f89e7b | 1148 | return 0; |
8ca151b5 JB |
1149 | case IWL_AGG_STARTING: |
1150 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
1151 | /* | |
1152 | * The agg session has been stopped before it was set up. This | |
1153 | * can happen when the AddBA timer times out for example. | |
1154 | */ | |
1155 | ||
1156 | /* No barriers since we are under mutex */ | |
1157 | lockdep_assert_held(&mvm->mutex); | |
8ca151b5 JB |
1158 | |
1159 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1160 | tid_data->state = IWL_AGG_OFF; | |
1161 | err = 0; | |
1162 | break; | |
1163 | default: | |
1164 | IWL_ERR(mvm, | |
1165 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
1166 | mvmsta->sta_id, tid, tid_data->state); | |
1167 | IWL_ERR(mvm, | |
1168 | "\ttid_data->txq_id = %d\n", tid_data->txq_id); | |
1169 | err = -EINVAL; | |
1170 | } | |
1171 | ||
1172 | spin_unlock_bh(&mvmsta->lock); | |
1173 | ||
1174 | return err; | |
1175 | } | |
1176 | ||
e3d9e7ce EG |
1177 | int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1178 | struct ieee80211_sta *sta, u16 tid) | |
1179 | { | |
5b577a90 | 1180 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
e3d9e7ce EG |
1181 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1182 | u16 txq_id; | |
b6658ff8 | 1183 | enum iwl_mvm_agg_state old_state; |
e3d9e7ce EG |
1184 | |
1185 | /* | |
1186 | * First set the agg state to OFF to avoid calling | |
1187 | * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. | |
1188 | */ | |
1189 | spin_lock_bh(&mvmsta->lock); | |
1190 | txq_id = tid_data->txq_id; | |
1191 | IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", | |
1192 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
b6658ff8 | 1193 | old_state = tid_data->state; |
e3d9e7ce | 1194 | tid_data->state = IWL_AGG_OFF; |
efed6640 | 1195 | mvmsta->agg_tids &= ~BIT(tid); |
e3d9e7ce EG |
1196 | spin_unlock_bh(&mvmsta->lock); |
1197 | ||
4ecafae9 LK |
1198 | /* No need to mark as reserved */ |
1199 | spin_lock_bh(&mvm->queue_info_lock); | |
1200 | mvm->queue_info[txq_id].setup_reserved = false; | |
1201 | spin_unlock_bh(&mvm->queue_info_lock); | |
1202 | ||
b6658ff8 | 1203 | if (old_state >= IWL_AGG_ON) { |
fe92e32a | 1204 | iwl_mvm_drain_sta(mvm, mvmsta, true); |
5888a40c | 1205 | if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) |
b6658ff8 | 1206 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); |
fe92e32a EG |
1207 | iwl_trans_wait_tx_queue_empty(mvm->trans, |
1208 | mvmsta->tfd_queue_msk); | |
1209 | iwl_mvm_drain_sta(mvm, mvmsta, false); | |
b6658ff8 | 1210 | |
f7f89e7b JB |
1211 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); |
1212 | ||
4ecafae9 LK |
1213 | iwl_mvm_disable_txq(mvm, tid_data->txq_id, |
1214 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1215 | 0); | |
b6658ff8 | 1216 | } |
e3d9e7ce | 1217 | |
e3d9e7ce EG |
1218 | return 0; |
1219 | } | |
1220 | ||
8ca151b5 JB |
1221 | static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) |
1222 | { | |
2dc2a15e | 1223 | int i, max = -1, max_offs = -1; |
8ca151b5 JB |
1224 | |
1225 | lockdep_assert_held(&mvm->mutex); | |
1226 | ||
2dc2a15e JB |
1227 | /* Pick the unused key offset with the highest 'deleted' |
1228 | * counter. Every time a key is deleted, all the counters | |
1229 | * are incremented and the one that was just deleted is | |
1230 | * reset to zero. Thus, the highest counter is the one | |
1231 | * that was deleted longest ago. Pick that one. | |
1232 | */ | |
1233 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1234 | if (test_bit(i, mvm->fw_key_table)) | |
1235 | continue; | |
1236 | if (mvm->fw_key_deleted[i] > max) { | |
1237 | max = mvm->fw_key_deleted[i]; | |
1238 | max_offs = i; | |
1239 | } | |
1240 | } | |
8ca151b5 | 1241 | |
2dc2a15e | 1242 | if (max_offs < 0) |
8ca151b5 JB |
1243 | return STA_KEY_IDX_INVALID; |
1244 | ||
2dc2a15e | 1245 | return max_offs; |
8ca151b5 JB |
1246 | } |
1247 | ||
5f7a1847 JB |
1248 | static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, |
1249 | struct ieee80211_vif *vif, | |
1250 | struct ieee80211_sta *sta) | |
8ca151b5 | 1251 | { |
5b530e95 | 1252 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 | 1253 | |
5f7a1847 JB |
1254 | if (sta) |
1255 | return iwl_mvm_sta_from_mac80211(sta); | |
8ca151b5 JB |
1256 | |
1257 | /* | |
1258 | * The device expects GTKs for station interfaces to be | |
1259 | * installed as GTKs for the AP station. If we have no | |
1260 | * station ID, then use AP's station ID. | |
1261 | */ | |
1262 | if (vif->type == NL80211_IFTYPE_STATION && | |
9513c5e1 AA |
1263 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { |
1264 | u8 sta_id = mvmvif->ap_sta_id; | |
1265 | ||
45854360 JB |
1266 | sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], |
1267 | lockdep_is_held(&mvm->mutex)); | |
9513c5e1 AA |
1268 | /* |
1269 | * It is possible that the 'sta' parameter is NULL, | |
1270 | * for example when a GTK is removed - the sta_id will then | |
1271 | * be the AP ID, and no station was passed by mac80211. | |
1272 | */ | |
1273 | if (IS_ERR_OR_NULL(sta)) | |
5f7a1847 | 1274 | return NULL; |
9513c5e1 | 1275 | |
5f7a1847 | 1276 | return iwl_mvm_sta_from_mac80211(sta); |
9513c5e1 | 1277 | } |
8ca151b5 | 1278 | |
5f7a1847 | 1279 | return NULL; |
8ca151b5 JB |
1280 | } |
1281 | ||
1282 | static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, | |
1283 | struct iwl_mvm_sta *mvm_sta, | |
ba3943b0 | 1284 | struct ieee80211_key_conf *keyconf, bool mcast, |
d6ee54a9 LC |
1285 | u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, |
1286 | u8 key_offset) | |
8ca151b5 | 1287 | { |
5a258aae | 1288 | struct iwl_mvm_add_sta_key_cmd cmd = {}; |
f9dc0004 | 1289 | __le16 key_flags; |
79920749 JB |
1290 | int ret; |
1291 | u32 status; | |
8ca151b5 JB |
1292 | u16 keyidx; |
1293 | int i; | |
2f6319d1 | 1294 | u8 sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1295 | |
1296 | keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1297 | STA_KEY_FLG_KEYID_MSK; | |
1298 | key_flags = cpu_to_le16(keyidx); | |
1299 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); | |
1300 | ||
1301 | switch (keyconf->cipher) { | |
1302 | case WLAN_CIPHER_SUITE_TKIP: | |
1303 | key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); | |
5a258aae | 1304 | cmd.tkip_rx_tsc_byte2 = tkip_iv32; |
8ca151b5 | 1305 | for (i = 0; i < 5; i++) |
5a258aae MS |
1306 | cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); |
1307 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1308 | break; |
1309 | case WLAN_CIPHER_SUITE_CCMP: | |
1310 | key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); | |
5a258aae | 1311 | memcpy(cmd.key, keyconf->key, keyconf->keylen); |
8ca151b5 | 1312 | break; |
ba3943b0 JB |
1313 | case WLAN_CIPHER_SUITE_WEP104: |
1314 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); | |
aa0cb08b | 1315 | /* fall through */ |
ba3943b0 JB |
1316 | case WLAN_CIPHER_SUITE_WEP40: |
1317 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); | |
1318 | memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); | |
1319 | break; | |
8ca151b5 | 1320 | default: |
e36e5433 MS |
1321 | key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); |
1322 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1323 | } |
1324 | ||
ba3943b0 | 1325 | if (mcast) |
8ca151b5 JB |
1326 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1327 | ||
d6ee54a9 | 1328 | cmd.key_offset = key_offset; |
5a258aae | 1329 | cmd.key_flags = key_flags; |
8ca151b5 JB |
1330 | cmd.sta_id = sta_id; |
1331 | ||
1332 | status = ADD_STA_SUCCESS; | |
a1022927 | 1333 | if (cmd_flags & CMD_ASYNC) |
f9dc0004 EG |
1334 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, |
1335 | sizeof(cmd), &cmd); | |
a1022927 EG |
1336 | else |
1337 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1338 | &cmd, &status); | |
8ca151b5 JB |
1339 | |
1340 | switch (status) { | |
1341 | case ADD_STA_SUCCESS: | |
1342 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); | |
1343 | break; | |
1344 | default: | |
1345 | ret = -EIO; | |
1346 | IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); | |
1347 | break; | |
1348 | } | |
1349 | ||
1350 | return ret; | |
1351 | } | |
1352 | ||
1353 | static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, | |
1354 | struct ieee80211_key_conf *keyconf, | |
1355 | u8 sta_id, bool remove_key) | |
1356 | { | |
1357 | struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; | |
1358 | ||
1359 | /* verify the key details match the required command's expectations */ | |
1360 | if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || | |
1361 | (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || | |
1362 | (keyconf->keyidx != 4 && keyconf->keyidx != 5))) | |
1363 | return -EINVAL; | |
1364 | ||
1365 | igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); | |
1366 | igtk_cmd.sta_id = cpu_to_le32(sta_id); | |
1367 | ||
1368 | if (remove_key) { | |
1369 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); | |
1370 | } else { | |
1371 | struct ieee80211_key_seq seq; | |
1372 | const u8 *pn; | |
1373 | ||
1374 | memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1375 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); |
1376 | pn = seq.aes_cmac.pn; | |
1377 | igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | | |
1378 | ((u64) pn[4] << 8) | | |
1379 | ((u64) pn[3] << 16) | | |
1380 | ((u64) pn[2] << 24) | | |
1381 | ((u64) pn[1] << 32) | | |
1382 | ((u64) pn[0] << 40)); | |
1383 | } | |
1384 | ||
1385 | IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", | |
1386 | remove_key ? "removing" : "installing", | |
1387 | igtk_cmd.sta_id); | |
1388 | ||
a1022927 | 1389 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
8ca151b5 JB |
1390 | sizeof(igtk_cmd), &igtk_cmd); |
1391 | } | |
1392 | ||
1393 | ||
1394 | static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, | |
1395 | struct ieee80211_vif *vif, | |
1396 | struct ieee80211_sta *sta) | |
1397 | { | |
5b530e95 | 1398 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1399 | |
1400 | if (sta) | |
1401 | return sta->addr; | |
1402 | ||
1403 | if (vif->type == NL80211_IFTYPE_STATION && | |
1404 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { | |
1405 | u8 sta_id = mvmvif->ap_sta_id; | |
1406 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1407 | lockdep_is_held(&mvm->mutex)); | |
1408 | return sta->addr; | |
1409 | } | |
1410 | ||
1411 | ||
1412 | return NULL; | |
1413 | } | |
1414 | ||
2f6319d1 JB |
1415 | static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1416 | struct ieee80211_vif *vif, | |
1417 | struct ieee80211_sta *sta, | |
ba3943b0 | 1418 | struct ieee80211_key_conf *keyconf, |
d6ee54a9 | 1419 | u8 key_offset, |
ba3943b0 | 1420 | bool mcast) |
2f6319d1 JB |
1421 | { |
1422 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1423 | int ret; | |
1424 | const u8 *addr; | |
1425 | struct ieee80211_key_seq seq; | |
1426 | u16 p1k[5]; | |
1427 | ||
1428 | switch (keyconf->cipher) { | |
1429 | case WLAN_CIPHER_SUITE_TKIP: | |
1430 | addr = iwl_mvm_get_mac_addr(mvm, vif, sta); | |
1431 | /* get phase 1 key from mac80211 */ | |
1432 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1433 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
ba3943b0 | 1434 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1435 | seq.tkip.iv32, p1k, 0, key_offset); |
2f6319d1 JB |
1436 | break; |
1437 | case WLAN_CIPHER_SUITE_CCMP: | |
ba3943b0 JB |
1438 | case WLAN_CIPHER_SUITE_WEP40: |
1439 | case WLAN_CIPHER_SUITE_WEP104: | |
1440 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, | |
d6ee54a9 | 1441 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
1442 | break; |
1443 | default: | |
ba3943b0 | 1444 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1445 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
1446 | } |
1447 | ||
1448 | return ret; | |
1449 | } | |
1450 | ||
1451 | static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, | |
ba3943b0 JB |
1452 | struct ieee80211_key_conf *keyconf, |
1453 | bool mcast) | |
2f6319d1 JB |
1454 | { |
1455 | struct iwl_mvm_add_sta_key_cmd cmd = {}; | |
1456 | __le16 key_flags; | |
1457 | int ret; | |
1458 | u32 status; | |
1459 | ||
1460 | key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1461 | STA_KEY_FLG_KEYID_MSK); | |
1462 | key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); | |
1463 | key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); | |
1464 | ||
ba3943b0 | 1465 | if (mcast) |
2f6319d1 JB |
1466 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1467 | ||
1468 | cmd.key_flags = key_flags; | |
1469 | cmd.key_offset = keyconf->hw_key_idx; | |
1470 | cmd.sta_id = sta_id; | |
1471 | ||
1472 | status = ADD_STA_SUCCESS; | |
1473 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1474 | &cmd, &status); | |
1475 | ||
1476 | switch (status) { | |
1477 | case ADD_STA_SUCCESS: | |
1478 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); | |
1479 | break; | |
1480 | default: | |
1481 | ret = -EIO; | |
1482 | IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); | |
1483 | break; | |
1484 | } | |
1485 | ||
1486 | return ret; | |
1487 | } | |
1488 | ||
8ca151b5 JB |
1489 | int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1490 | struct ieee80211_vif *vif, | |
1491 | struct ieee80211_sta *sta, | |
1492 | struct ieee80211_key_conf *keyconf, | |
d6ee54a9 | 1493 | u8 key_offset) |
8ca151b5 | 1494 | { |
ba3943b0 | 1495 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 | 1496 | struct iwl_mvm_sta *mvm_sta; |
2f6319d1 | 1497 | u8 sta_id; |
8ca151b5 | 1498 | int ret; |
11828dbc | 1499 | static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; |
8ca151b5 JB |
1500 | |
1501 | lockdep_assert_held(&mvm->mutex); | |
1502 | ||
1503 | /* Get the station id from the mvm local station table */ | |
5f7a1847 JB |
1504 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
1505 | if (!mvm_sta) { | |
1506 | IWL_ERR(mvm, "Failed to find station\n"); | |
8ca151b5 JB |
1507 | return -EINVAL; |
1508 | } | |
5f7a1847 | 1509 | sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1510 | |
1511 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { | |
1512 | ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); | |
1513 | goto end; | |
1514 | } | |
1515 | ||
1516 | /* | |
1517 | * It is possible that the 'sta' parameter is NULL, and thus | |
1518 | * there is a need to retrieve the sta from the local station table. | |
1519 | */ | |
1520 | if (!sta) { | |
1521 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1522 | lockdep_is_held(&mvm->mutex)); | |
1523 | if (IS_ERR_OR_NULL(sta)) { | |
1524 | IWL_ERR(mvm, "Invalid station id\n"); | |
1525 | return -EINVAL; | |
1526 | } | |
1527 | } | |
1528 | ||
2f6319d1 | 1529 | if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
8ca151b5 JB |
1530 | return -EINVAL; |
1531 | ||
d6ee54a9 LC |
1532 | /* If the key_offset is not pre-assigned, we need to find a |
1533 | * new offset to use. In normal cases, the offset is not | |
1534 | * pre-assigned, but during HW_RESTART we want to reuse the | |
1535 | * same indices, so we pass them when this function is called. | |
1536 | * | |
1537 | * In D3 entry, we need to hardcoded the indices (because the | |
1538 | * firmware hardcodes the PTK offset to 0). In this case, we | |
1539 | * need to make sure we don't overwrite the hw_key_idx in the | |
1540 | * keyconf structure, because otherwise we cannot configure | |
1541 | * the original ones back when resuming. | |
1542 | */ | |
1543 | if (key_offset == STA_KEY_IDX_INVALID) { | |
1544 | key_offset = iwl_mvm_set_fw_key_idx(mvm); | |
1545 | if (key_offset == STA_KEY_IDX_INVALID) | |
8ca151b5 | 1546 | return -ENOSPC; |
d6ee54a9 | 1547 | keyconf->hw_key_idx = key_offset; |
8ca151b5 JB |
1548 | } |
1549 | ||
d6ee54a9 | 1550 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); |
9c3deeb5 | 1551 | if (ret) |
ba3943b0 | 1552 | goto end; |
ba3943b0 JB |
1553 | |
1554 | /* | |
1555 | * For WEP, the same key is used for multicast and unicast. Upload it | |
1556 | * again, using the same key offset, and now pointing the other one | |
1557 | * to the same key slot (offset). | |
1558 | * If this fails, remove the original as well. | |
1559 | */ | |
1560 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1561 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { | |
d6ee54a9 LC |
1562 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, |
1563 | key_offset, !mcast); | |
ba3943b0 | 1564 | if (ret) { |
ba3943b0 | 1565 | __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
9c3deeb5 | 1566 | goto end; |
ba3943b0 JB |
1567 | } |
1568 | } | |
8ca151b5 | 1569 | |
9c3deeb5 LC |
1570 | __set_bit(key_offset, mvm->fw_key_table); |
1571 | ||
8ca151b5 JB |
1572 | end: |
1573 | IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
1574 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, | |
11828dbc | 1575 | sta ? sta->addr : zero_addr, ret); |
8ca151b5 JB |
1576 | return ret; |
1577 | } | |
1578 | ||
1579 | int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, | |
1580 | struct ieee80211_vif *vif, | |
1581 | struct ieee80211_sta *sta, | |
1582 | struct ieee80211_key_conf *keyconf) | |
1583 | { | |
ba3943b0 | 1584 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 JB |
1585 | struct iwl_mvm_sta *mvm_sta; |
1586 | u8 sta_id = IWL_MVM_STATION_COUNT; | |
2dc2a15e | 1587 | int ret, i; |
8ca151b5 JB |
1588 | |
1589 | lockdep_assert_held(&mvm->mutex); | |
1590 | ||
5f7a1847 JB |
1591 | /* Get the station from the mvm local station table */ |
1592 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); | |
8ca151b5 JB |
1593 | |
1594 | IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", | |
1595 | keyconf->keyidx, sta_id); | |
1596 | ||
1597 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) | |
1598 | return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); | |
1599 | ||
2f6319d1 | 1600 | if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { |
8ca151b5 JB |
1601 | IWL_ERR(mvm, "offset %d not used in fw key table.\n", |
1602 | keyconf->hw_key_idx); | |
1603 | return -ENOENT; | |
1604 | } | |
1605 | ||
2dc2a15e JB |
1606 | /* track which key was deleted last */ |
1607 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1608 | if (mvm->fw_key_deleted[i] < U8_MAX) | |
1609 | mvm->fw_key_deleted[i]++; | |
1610 | } | |
1611 | mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; | |
1612 | ||
5f7a1847 | 1613 | if (!mvm_sta) { |
8ca151b5 JB |
1614 | IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); |
1615 | return 0; | |
1616 | } | |
1617 | ||
5f7a1847 JB |
1618 | sta_id = mvm_sta->sta_id; |
1619 | ||
ba3943b0 JB |
1620 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
1621 | if (ret) | |
1622 | return ret; | |
1623 | ||
1624 | /* delete WEP key twice to get rid of (now useless) offset */ | |
1625 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1626 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) | |
1627 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); | |
1628 | ||
1629 | return ret; | |
8ca151b5 JB |
1630 | } |
1631 | ||
1632 | void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, | |
1633 | struct ieee80211_vif *vif, | |
1634 | struct ieee80211_key_conf *keyconf, | |
1635 | struct ieee80211_sta *sta, u32 iv32, | |
1636 | u16 *phase1key) | |
1637 | { | |
c3eb536a | 1638 | struct iwl_mvm_sta *mvm_sta; |
ba3943b0 | 1639 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 1640 | |
c3eb536a BL |
1641 | rcu_read_lock(); |
1642 | ||
5f7a1847 JB |
1643 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
1644 | if (WARN_ON_ONCE(!mvm_sta)) | |
45854360 | 1645 | goto unlock; |
ba3943b0 | 1646 | iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1647 | iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); |
45854360 JB |
1648 | |
1649 | unlock: | |
c3eb536a | 1650 | rcu_read_unlock(); |
8ca151b5 JB |
1651 | } |
1652 | ||
9cc40712 JB |
1653 | void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, |
1654 | struct ieee80211_sta *sta) | |
8ca151b5 | 1655 | { |
5b577a90 | 1656 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1657 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1658 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1659 | .sta_id = mvmsta->sta_id, |
5af01772 | 1660 | .station_flags_msk = cpu_to_le32(STA_FLG_PS), |
9cc40712 | 1661 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 JB |
1662 | }; |
1663 | int ret; | |
1664 | ||
854c5705 SS |
1665 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
1666 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
8ca151b5 JB |
1667 | if (ret) |
1668 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1669 | } | |
1670 | ||
9cc40712 JB |
1671 | void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, |
1672 | struct ieee80211_sta *sta, | |
8ca151b5 | 1673 | enum ieee80211_frame_release_type reason, |
3e56eadf JB |
1674 | u16 cnt, u16 tids, bool more_data, |
1675 | bool agg) | |
8ca151b5 | 1676 | { |
5b577a90 | 1677 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1678 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1679 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1680 | .sta_id = mvmsta->sta_id, |
8ca151b5 JB |
1681 | .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, |
1682 | .sleep_tx_count = cpu_to_le16(cnt), | |
9cc40712 | 1683 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 | 1684 | }; |
3e56eadf JB |
1685 | int tid, ret; |
1686 | unsigned long _tids = tids; | |
1687 | ||
1688 | /* convert TIDs to ACs - we don't support TSPEC so that's OK | |
1689 | * Note that this field is reserved and unused by firmware not | |
1690 | * supporting GO uAPSD, so it's safe to always do this. | |
1691 | */ | |
1692 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) | |
1693 | cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); | |
1694 | ||
1695 | /* If we're releasing frames from aggregation queues then check if the | |
1696 | * all queues combined that we're releasing frames from have | |
1697 | * - more frames than the service period, in which case more_data | |
1698 | * needs to be set | |
1699 | * - fewer than 'cnt' frames, in which case we need to adjust the | |
1700 | * firmware command (but do that unconditionally) | |
1701 | */ | |
1702 | if (agg) { | |
1703 | int remaining = cnt; | |
36be0eb6 | 1704 | int sleep_tx_count; |
3e56eadf JB |
1705 | |
1706 | spin_lock_bh(&mvmsta->lock); | |
1707 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { | |
1708 | struct iwl_mvm_tid_data *tid_data; | |
1709 | u16 n_queued; | |
1710 | ||
1711 | tid_data = &mvmsta->tid_data[tid]; | |
1712 | if (WARN(tid_data->state != IWL_AGG_ON && | |
1713 | tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, | |
1714 | "TID %d state is %d\n", | |
1715 | tid, tid_data->state)) { | |
1716 | spin_unlock_bh(&mvmsta->lock); | |
1717 | ieee80211_sta_eosp(sta); | |
1718 | return; | |
1719 | } | |
1720 | ||
1721 | n_queued = iwl_mvm_tid_queued(tid_data); | |
1722 | if (n_queued > remaining) { | |
1723 | more_data = true; | |
1724 | remaining = 0; | |
1725 | break; | |
1726 | } | |
1727 | remaining -= n_queued; | |
1728 | } | |
36be0eb6 EG |
1729 | sleep_tx_count = cnt - remaining; |
1730 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) | |
1731 | mvmsta->sleep_tx_count = sleep_tx_count; | |
3e56eadf JB |
1732 | spin_unlock_bh(&mvmsta->lock); |
1733 | ||
36be0eb6 | 1734 | cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); |
3e56eadf JB |
1735 | if (WARN_ON(cnt - remaining == 0)) { |
1736 | ieee80211_sta_eosp(sta); | |
1737 | return; | |
1738 | } | |
1739 | } | |
1740 | ||
1741 | /* Note: this is ignored by firmware not supporting GO uAPSD */ | |
1742 | if (more_data) | |
1743 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); | |
1744 | ||
1745 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { | |
1746 | mvmsta->next_status_eosp = true; | |
1747 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); | |
1748 | } else { | |
1749 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); | |
1750 | } | |
8ca151b5 | 1751 | |
156f92f2 EG |
1752 | /* block the Tx queues until the FW updated the sleep Tx count */ |
1753 | iwl_trans_block_txq_ptrs(mvm->trans, true); | |
1754 | ||
1755 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, | |
1756 | CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, | |
854c5705 | 1757 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); |
8ca151b5 JB |
1758 | if (ret) |
1759 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1760 | } | |
3e56eadf | 1761 | |
0416841d JB |
1762 | void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, |
1763 | struct iwl_rx_cmd_buffer *rxb) | |
3e56eadf JB |
1764 | { |
1765 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1766 | struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; | |
1767 | struct ieee80211_sta *sta; | |
1768 | u32 sta_id = le32_to_cpu(notif->sta_id); | |
1769 | ||
1770 | if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) | |
0416841d | 1771 | return; |
3e56eadf JB |
1772 | |
1773 | rcu_read_lock(); | |
1774 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1775 | if (!IS_ERR_OR_NULL(sta)) | |
1776 | ieee80211_sta_eosp(sta); | |
1777 | rcu_read_unlock(); | |
3e56eadf | 1778 | } |
09b0ce1a AO |
1779 | |
1780 | void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, | |
1781 | struct iwl_mvm_sta *mvmsta, bool disable) | |
1782 | { | |
1783 | struct iwl_mvm_add_sta_cmd cmd = { | |
1784 | .add_modify = STA_MODE_MODIFY, | |
1785 | .sta_id = mvmsta->sta_id, | |
1786 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
1787 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
1788 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), | |
1789 | }; | |
1790 | int ret; | |
1791 | ||
854c5705 SS |
1792 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
1793 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
09b0ce1a AO |
1794 | if (ret) |
1795 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1796 | } | |
003e5236 AO |
1797 | |
1798 | void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, | |
1799 | struct ieee80211_sta *sta, | |
1800 | bool disable) | |
1801 | { | |
1802 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1803 | ||
1804 | spin_lock_bh(&mvm_sta->lock); | |
1805 | ||
1806 | if (mvm_sta->disable_tx == disable) { | |
1807 | spin_unlock_bh(&mvm_sta->lock); | |
1808 | return; | |
1809 | } | |
1810 | ||
1811 | mvm_sta->disable_tx = disable; | |
1812 | ||
1813 | /* | |
0d365ae5 SS |
1814 | * Tell mac80211 to start/stop queuing tx for this station, |
1815 | * but don't stop queuing if there are still pending frames | |
003e5236 AO |
1816 | * for this station. |
1817 | */ | |
1818 | if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) | |
1819 | ieee80211_sta_block_awake(mvm->hw, sta, disable); | |
1820 | ||
1821 | iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); | |
1822 | ||
1823 | spin_unlock_bh(&mvm_sta->lock); | |
1824 | } | |
1825 | ||
1826 | void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, | |
1827 | struct iwl_mvm_vif *mvmvif, | |
1828 | bool disable) | |
1829 | { | |
1830 | struct ieee80211_sta *sta; | |
1831 | struct iwl_mvm_sta *mvm_sta; | |
1832 | int i; | |
1833 | ||
1834 | lockdep_assert_held(&mvm->mutex); | |
1835 | ||
1836 | /* Block/unblock all the stations of the given mvmvif */ | |
1837 | for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { | |
1838 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], | |
1839 | lockdep_is_held(&mvm->mutex)); | |
1840 | if (IS_ERR_OR_NULL(sta)) | |
1841 | continue; | |
1842 | ||
1843 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1844 | if (mvm_sta->mac_id_n_color != | |
1845 | FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) | |
1846 | continue; | |
1847 | ||
1848 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); | |
1849 | } | |
1850 | } | |
dc88b4ba LC |
1851 | |
1852 | void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1853 | { | |
1854 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1855 | struct iwl_mvm_sta *mvmsta; | |
1856 | ||
1857 | rcu_read_lock(); | |
1858 | ||
1859 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); | |
1860 | ||
1861 | if (!WARN_ON(!mvmsta)) | |
1862 | iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); | |
1863 | ||
1864 | rcu_read_unlock(); | |
1865 | } |