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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 | |
26d6c16b | 10 | * Copyright(c) 2016 - 2017 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 | |
26d6c16b | 37 | * Copyright(c) 2016 - 2017 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 | { | |
ced19f26 SS |
80 | if (iwl_mvm_has_new_rx_api(mvm) || |
81 | fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) | |
82 | return sizeof(struct iwl_mvm_add_sta_cmd); | |
83 | else | |
84 | return sizeof(struct iwl_mvm_add_sta_cmd_v7); | |
854c5705 SS |
85 | } |
86 | ||
b92e661b EP |
87 | static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, |
88 | enum nl80211_iftype iftype) | |
8ca151b5 JB |
89 | { |
90 | int sta_id; | |
b92e661b | 91 | u32 reserved_ids = 0; |
8ca151b5 | 92 | |
b92e661b | 93 | BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32); |
8ca151b5 JB |
94 | WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); |
95 | ||
96 | lockdep_assert_held(&mvm->mutex); | |
97 | ||
b92e661b EP |
98 | /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ |
99 | if (iftype != NL80211_IFTYPE_STATION) | |
100 | reserved_ids = BIT(0); | |
101 | ||
8ca151b5 | 102 | /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ |
0ae98812 | 103 | for (sta_id = 0; sta_id < ARRAY_SIZE(mvm->fw_id_to_mac_id); sta_id++) { |
b92e661b EP |
104 | if (BIT(sta_id) & reserved_ids) |
105 | continue; | |
106 | ||
8ca151b5 JB |
107 | if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], |
108 | lockdep_is_held(&mvm->mutex))) | |
109 | return sta_id; | |
b92e661b | 110 | } |
0ae98812 | 111 | return IWL_MVM_INVALID_STA; |
8ca151b5 JB |
112 | } |
113 | ||
7a453973 JB |
114 | /* send station add/update command to firmware */ |
115 | int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
24afba76 | 116 | bool update, unsigned int flags) |
8ca151b5 | 117 | { |
9d8ce6af | 118 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
4b8265ab EG |
119 | struct iwl_mvm_add_sta_cmd add_sta_cmd = { |
120 | .sta_id = mvm_sta->sta_id, | |
121 | .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), | |
122 | .add_modify = update ? 1 : 0, | |
123 | .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | | |
124 | STA_FLG_MIMO_EN_MSK), | |
cf0cda19 | 125 | .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), |
4b8265ab | 126 | }; |
8ca151b5 JB |
127 | int ret; |
128 | u32 status; | |
129 | u32 agg_size = 0, mpdu_dens = 0; | |
130 | ||
ced19f26 SS |
131 | if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) |
132 | add_sta_cmd.station_type = mvm_sta->sta_type; | |
133 | ||
24afba76 | 134 | if (!update || (flags & STA_MODIFY_QUEUES)) { |
7a453973 | 135 | memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); |
24afba76 | 136 | |
bb49701b SS |
137 | if (!iwl_mvm_has_new_tx_api(mvm)) { |
138 | add_sta_cmd.tfd_queue_msk = | |
139 | cpu_to_le32(mvm_sta->tfd_queue_msk); | |
140 | ||
141 | if (flags & STA_MODIFY_QUEUES) | |
142 | add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; | |
143 | } else { | |
144 | WARN_ON(flags & STA_MODIFY_QUEUES); | |
145 | } | |
7a453973 | 146 | } |
5bc5aaad JB |
147 | |
148 | switch (sta->bandwidth) { | |
149 | case IEEE80211_STA_RX_BW_160: | |
150 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); | |
151 | /* fall through */ | |
152 | case IEEE80211_STA_RX_BW_80: | |
153 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); | |
154 | /* fall through */ | |
155 | case IEEE80211_STA_RX_BW_40: | |
156 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); | |
157 | /* fall through */ | |
158 | case IEEE80211_STA_RX_BW_20: | |
159 | if (sta->ht_cap.ht_supported) | |
160 | add_sta_cmd.station_flags |= | |
161 | cpu_to_le32(STA_FLG_FAT_EN_20MHZ); | |
162 | break; | |
163 | } | |
164 | ||
165 | switch (sta->rx_nss) { | |
166 | case 1: | |
167 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
168 | break; | |
169 | case 2: | |
170 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); | |
171 | break; | |
172 | case 3 ... 8: | |
173 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); | |
174 | break; | |
175 | } | |
176 | ||
177 | switch (sta->smps_mode) { | |
178 | case IEEE80211_SMPS_AUTOMATIC: | |
179 | case IEEE80211_SMPS_NUM_MODES: | |
180 | WARN_ON(1); | |
181 | break; | |
182 | case IEEE80211_SMPS_STATIC: | |
183 | /* override NSS */ | |
184 | add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); | |
185 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
186 | break; | |
187 | case IEEE80211_SMPS_DYNAMIC: | |
188 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); | |
189 | break; | |
190 | case IEEE80211_SMPS_OFF: | |
191 | /* nothing */ | |
192 | break; | |
193 | } | |
8ca151b5 JB |
194 | |
195 | if (sta->ht_cap.ht_supported) { | |
196 | add_sta_cmd.station_flags_msk |= | |
197 | cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | | |
198 | STA_FLG_AGG_MPDU_DENS_MSK); | |
199 | ||
200 | mpdu_dens = sta->ht_cap.ampdu_density; | |
201 | } | |
202 | ||
203 | if (sta->vht_cap.vht_supported) { | |
204 | agg_size = sta->vht_cap.cap & | |
205 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; | |
206 | agg_size >>= | |
207 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; | |
208 | } else if (sta->ht_cap.ht_supported) { | |
209 | agg_size = sta->ht_cap.ampdu_factor; | |
210 | } | |
211 | ||
212 | add_sta_cmd.station_flags |= | |
213 | cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); | |
214 | add_sta_cmd.station_flags |= | |
215 | cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); | |
6ea29ce5 JB |
216 | if (mvm_sta->associated) |
217 | add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); | |
8ca151b5 | 218 | |
65e25482 JB |
219 | if (sta->wme) { |
220 | add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; | |
221 | ||
222 | if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) | |
c80eb570 | 223 | add_sta_cmd.uapsd_acs |= BIT(AC_BK); |
65e25482 | 224 | if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
c80eb570 | 225 | add_sta_cmd.uapsd_acs |= BIT(AC_BE); |
65e25482 | 226 | if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
c80eb570 | 227 | add_sta_cmd.uapsd_acs |= BIT(AC_VI); |
65e25482 | 228 | if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
c80eb570 EG |
229 | add_sta_cmd.uapsd_acs |= BIT(AC_VO); |
230 | add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; | |
e71ca5ea | 231 | add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; |
65e25482 JB |
232 | } |
233 | ||
8ca151b5 | 234 | status = ADD_STA_SUCCESS; |
854c5705 SS |
235 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
236 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 237 | &add_sta_cmd, &status); |
8ca151b5 JB |
238 | if (ret) |
239 | return ret; | |
240 | ||
837c4da9 | 241 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
242 | case ADD_STA_SUCCESS: |
243 | IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); | |
244 | break; | |
245 | default: | |
246 | ret = -EIO; | |
247 | IWL_ERR(mvm, "ADD_STA failed\n"); | |
248 | break; | |
249 | } | |
250 | ||
251 | return ret; | |
252 | } | |
253 | ||
10b2b201 SS |
254 | static void iwl_mvm_rx_agg_session_expired(unsigned long data) |
255 | { | |
256 | struct iwl_mvm_baid_data __rcu **rcu_ptr = (void *)data; | |
257 | struct iwl_mvm_baid_data *ba_data; | |
258 | struct ieee80211_sta *sta; | |
259 | struct iwl_mvm_sta *mvm_sta; | |
260 | unsigned long timeout; | |
261 | ||
262 | rcu_read_lock(); | |
263 | ||
264 | ba_data = rcu_dereference(*rcu_ptr); | |
265 | ||
266 | if (WARN_ON(!ba_data)) | |
267 | goto unlock; | |
268 | ||
269 | if (!ba_data->timeout) | |
270 | goto unlock; | |
271 | ||
272 | timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); | |
273 | if (time_is_after_jiffies(timeout)) { | |
274 | mod_timer(&ba_data->session_timer, timeout); | |
275 | goto unlock; | |
276 | } | |
277 | ||
278 | /* Timer expired */ | |
279 | sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); | |
280 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
281 | ieee80211_stop_rx_ba_session_offl(mvm_sta->vif, | |
282 | sta->addr, ba_data->tid); | |
283 | unlock: | |
284 | rcu_read_unlock(); | |
285 | } | |
286 | ||
a0f6bf2a AN |
287 | static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm, |
288 | struct ieee80211_sta *sta) | |
289 | { | |
290 | unsigned long used_hw_queues; | |
291 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
5d42e7b2 EG |
292 | unsigned int wdg_timeout = |
293 | iwl_mvm_get_wd_timeout(mvm, NULL, true, false); | |
a0f6bf2a AN |
294 | u32 ac; |
295 | ||
296 | lockdep_assert_held(&mvm->mutex); | |
297 | ||
298 | used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL); | |
299 | ||
300 | /* Find available queues, and allocate them to the ACs */ | |
301 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
302 | u8 queue = find_first_zero_bit(&used_hw_queues, | |
303 | mvm->first_agg_queue); | |
304 | ||
305 | if (queue >= mvm->first_agg_queue) { | |
306 | IWL_ERR(mvm, "Failed to allocate STA queue\n"); | |
307 | return -EBUSY; | |
308 | } | |
309 | ||
310 | __set_bit(queue, &used_hw_queues); | |
311 | mvmsta->hw_queue[ac] = queue; | |
312 | } | |
313 | ||
314 | /* Found a place for all queues - enable them */ | |
315 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
316 | iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac], | |
4ecafae9 | 317 | mvmsta->hw_queue[ac], |
cf6c6ea3 | 318 | iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 0, |
5c1156ef | 319 | wdg_timeout); |
a0f6bf2a AN |
320 | mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]); |
321 | } | |
322 | ||
323 | return 0; | |
324 | } | |
325 | ||
326 | static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm, | |
327 | struct ieee80211_sta *sta) | |
328 | { | |
329 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
330 | unsigned long sta_msk; | |
331 | int i; | |
332 | ||
333 | lockdep_assert_held(&mvm->mutex); | |
334 | ||
335 | /* disable the TDLS STA-specific queues */ | |
336 | sta_msk = mvmsta->tfd_queue_msk; | |
a4ca3ed4 | 337 | for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE) |
06ecdba3 | 338 | iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0); |
a0f6bf2a AN |
339 | } |
340 | ||
9794c64f LK |
341 | /* Disable aggregations for a bitmap of TIDs for a given station */ |
342 | static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, | |
343 | unsigned long disable_agg_tids, | |
344 | bool remove_queue) | |
345 | { | |
346 | struct iwl_mvm_add_sta_cmd cmd = {}; | |
347 | struct ieee80211_sta *sta; | |
348 | struct iwl_mvm_sta *mvmsta; | |
349 | u32 status; | |
350 | u8 sta_id; | |
351 | int ret; | |
352 | ||
bb49701b SS |
353 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
354 | return -EINVAL; | |
355 | ||
9794c64f LK |
356 | spin_lock_bh(&mvm->queue_info_lock); |
357 | sta_id = mvm->queue_info[queue].ra_sta_id; | |
358 | spin_unlock_bh(&mvm->queue_info_lock); | |
359 | ||
360 | rcu_read_lock(); | |
361 | ||
362 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
363 | ||
364 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { | |
365 | rcu_read_unlock(); | |
366 | return -EINVAL; | |
367 | } | |
368 | ||
369 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
370 | ||
371 | mvmsta->tid_disable_agg |= disable_agg_tids; | |
372 | ||
373 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
374 | cmd.sta_id = mvmsta->sta_id; | |
375 | cmd.add_modify = STA_MODE_MODIFY; | |
376 | cmd.modify_mask = STA_MODIFY_QUEUES; | |
377 | if (disable_agg_tids) | |
378 | cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; | |
379 | if (remove_queue) | |
380 | cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; | |
381 | cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); | |
382 | cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); | |
383 | ||
384 | rcu_read_unlock(); | |
385 | ||
386 | /* Notify FW of queue removal from the STA queues */ | |
387 | status = ADD_STA_SUCCESS; | |
388 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, | |
389 | iwl_mvm_add_sta_cmd_size(mvm), | |
390 | &cmd, &status); | |
391 | ||
392 | return ret; | |
393 | } | |
394 | ||
42db09c1 LK |
395 | static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) |
396 | { | |
397 | struct ieee80211_sta *sta; | |
398 | struct iwl_mvm_sta *mvmsta; | |
399 | unsigned long tid_bitmap; | |
400 | unsigned long agg_tids = 0; | |
806911da | 401 | u8 sta_id; |
42db09c1 LK |
402 | int tid; |
403 | ||
404 | lockdep_assert_held(&mvm->mutex); | |
405 | ||
bb49701b SS |
406 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
407 | return -EINVAL; | |
408 | ||
42db09c1 LK |
409 | spin_lock_bh(&mvm->queue_info_lock); |
410 | sta_id = mvm->queue_info[queue].ra_sta_id; | |
411 | tid_bitmap = mvm->queue_info[queue].tid_bitmap; | |
412 | spin_unlock_bh(&mvm->queue_info_lock); | |
413 | ||
414 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
415 | lockdep_is_held(&mvm->mutex)); | |
416 | ||
417 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) | |
418 | return -EINVAL; | |
419 | ||
420 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
421 | ||
422 | spin_lock_bh(&mvmsta->lock); | |
423 | for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { | |
424 | if (mvmsta->tid_data[tid].state == IWL_AGG_ON) | |
425 | agg_tids |= BIT(tid); | |
426 | } | |
427 | spin_unlock_bh(&mvmsta->lock); | |
428 | ||
429 | return agg_tids; | |
430 | } | |
431 | ||
9794c64f LK |
432 | /* |
433 | * Remove a queue from a station's resources. | |
434 | * Note that this only marks as free. It DOESN'T delete a BA agreement, and | |
435 | * doesn't disable the queue | |
436 | */ | |
437 | static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) | |
438 | { | |
439 | struct ieee80211_sta *sta; | |
440 | struct iwl_mvm_sta *mvmsta; | |
441 | unsigned long tid_bitmap; | |
442 | unsigned long disable_agg_tids = 0; | |
443 | u8 sta_id; | |
444 | int tid; | |
445 | ||
446 | lockdep_assert_held(&mvm->mutex); | |
447 | ||
bb49701b SS |
448 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
449 | return -EINVAL; | |
450 | ||
9794c64f LK |
451 | spin_lock_bh(&mvm->queue_info_lock); |
452 | sta_id = mvm->queue_info[queue].ra_sta_id; | |
453 | tid_bitmap = mvm->queue_info[queue].tid_bitmap; | |
454 | spin_unlock_bh(&mvm->queue_info_lock); | |
455 | ||
456 | rcu_read_lock(); | |
457 | ||
458 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
459 | ||
460 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { | |
461 | rcu_read_unlock(); | |
462 | return 0; | |
463 | } | |
464 | ||
465 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
466 | ||
467 | spin_lock_bh(&mvmsta->lock); | |
42db09c1 | 468 | /* Unmap MAC queues and TIDs from this queue */ |
9794c64f | 469 | for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { |
9794c64f LK |
470 | if (mvmsta->tid_data[tid].state == IWL_AGG_ON) |
471 | disable_agg_tids |= BIT(tid); | |
6862fcee | 472 | mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; |
9794c64f | 473 | } |
9794c64f | 474 | |
42db09c1 | 475 | mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ |
9794c64f LK |
476 | spin_unlock_bh(&mvmsta->lock); |
477 | ||
478 | rcu_read_unlock(); | |
479 | ||
9794c64f LK |
480 | return disable_agg_tids; |
481 | } | |
482 | ||
01796ff2 SS |
483 | static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, |
484 | bool same_sta) | |
485 | { | |
486 | struct iwl_mvm_sta *mvmsta; | |
487 | u8 txq_curr_ac, sta_id, tid; | |
488 | unsigned long disable_agg_tids = 0; | |
489 | int ret; | |
490 | ||
491 | lockdep_assert_held(&mvm->mutex); | |
492 | ||
bb49701b SS |
493 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
494 | return -EINVAL; | |
495 | ||
01796ff2 SS |
496 | spin_lock_bh(&mvm->queue_info_lock); |
497 | txq_curr_ac = mvm->queue_info[queue].mac80211_ac; | |
498 | sta_id = mvm->queue_info[queue].ra_sta_id; | |
499 | tid = mvm->queue_info[queue].txq_tid; | |
500 | spin_unlock_bh(&mvm->queue_info_lock); | |
501 | ||
502 | mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); | |
e3df1e4b SD |
503 | if (WARN_ON(!mvmsta)) |
504 | return -EINVAL; | |
01796ff2 SS |
505 | |
506 | disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); | |
507 | /* Disable the queue */ | |
508 | if (disable_agg_tids) | |
509 | iwl_mvm_invalidate_sta_queue(mvm, queue, | |
510 | disable_agg_tids, false); | |
511 | ||
512 | ret = iwl_mvm_disable_txq(mvm, queue, | |
513 | mvmsta->vif->hw_queue[txq_curr_ac], | |
514 | tid, 0); | |
515 | if (ret) { | |
516 | /* Re-mark the inactive queue as inactive */ | |
517 | spin_lock_bh(&mvm->queue_info_lock); | |
518 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE; | |
519 | spin_unlock_bh(&mvm->queue_info_lock); | |
520 | IWL_ERR(mvm, | |
521 | "Failed to free inactive queue %d (ret=%d)\n", | |
522 | queue, ret); | |
523 | ||
524 | return ret; | |
525 | } | |
526 | ||
527 | /* If TXQ is allocated to another STA, update removal in FW */ | |
528 | if (!same_sta) | |
529 | iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
42db09c1 LK |
534 | static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, |
535 | unsigned long tfd_queue_mask, u8 ac) | |
536 | { | |
537 | int queue = 0; | |
538 | u8 ac_to_queue[IEEE80211_NUM_ACS]; | |
539 | int i; | |
540 | ||
541 | lockdep_assert_held(&mvm->queue_info_lock); | |
bb49701b SS |
542 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
543 | return -EINVAL; | |
42db09c1 LK |
544 | |
545 | memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); | |
546 | ||
547 | /* See what ACs the existing queues for this STA have */ | |
548 | for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { | |
549 | /* Only DATA queues can be shared */ | |
550 | if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && | |
551 | i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) | |
552 | continue; | |
553 | ||
9f9af3d7 LK |
554 | /* Don't try and take queues being reconfigured */ |
555 | if (mvm->queue_info[queue].status == | |
556 | IWL_MVM_QUEUE_RECONFIGURING) | |
557 | continue; | |
558 | ||
42db09c1 LK |
559 | ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; |
560 | } | |
561 | ||
562 | /* | |
563 | * The queue to share is chosen only from DATA queues as follows (in | |
564 | * descending priority): | |
565 | * 1. An AC_BE queue | |
566 | * 2. Same AC queue | |
567 | * 3. Highest AC queue that is lower than new AC | |
568 | * 4. Any existing AC (there always is at least 1 DATA queue) | |
569 | */ | |
570 | ||
571 | /* Priority 1: An AC_BE queue */ | |
572 | if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) | |
573 | queue = ac_to_queue[IEEE80211_AC_BE]; | |
574 | /* Priority 2: Same AC queue */ | |
575 | else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) | |
576 | queue = ac_to_queue[ac]; | |
577 | /* Priority 3a: If new AC is VO and VI exists - use VI */ | |
578 | else if (ac == IEEE80211_AC_VO && | |
579 | ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) | |
580 | queue = ac_to_queue[IEEE80211_AC_VI]; | |
581 | /* Priority 3b: No BE so only AC less than the new one is BK */ | |
582 | else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) | |
583 | queue = ac_to_queue[IEEE80211_AC_BK]; | |
584 | /* Priority 4a: No BE nor BK - use VI if exists */ | |
585 | else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) | |
586 | queue = ac_to_queue[IEEE80211_AC_VI]; | |
587 | /* Priority 4b: No BE, BK nor VI - use VO if exists */ | |
588 | else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) | |
589 | queue = ac_to_queue[IEEE80211_AC_VO]; | |
590 | ||
591 | /* Make sure queue found (or not) is legal */ | |
9f9af3d7 LK |
592 | if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && |
593 | !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && | |
594 | (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { | |
42db09c1 | 595 | IWL_ERR(mvm, "No DATA queues available to share\n"); |
9f9af3d7 LK |
596 | return -ENOSPC; |
597 | } | |
598 | ||
599 | /* Make sure the queue isn't in the middle of being reconfigured */ | |
600 | if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_RECONFIGURING) { | |
601 | IWL_ERR(mvm, | |
602 | "TXQ %d is in the middle of re-config - try again\n", | |
603 | queue); | |
604 | return -EBUSY; | |
42db09c1 LK |
605 | } |
606 | ||
607 | return queue; | |
608 | } | |
609 | ||
58f2cc57 | 610 | /* |
9f9af3d7 LK |
611 | * If a given queue has a higher AC than the TID stream that is being compared |
612 | * to, the queue needs to be redirected to the lower AC. This function does that | |
58f2cc57 LK |
613 | * in such a case, otherwise - if no redirection required - it does nothing, |
614 | * unless the %force param is true. | |
615 | */ | |
9f9af3d7 LK |
616 | int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid, |
617 | int ac, int ssn, unsigned int wdg_timeout, | |
618 | bool force) | |
58f2cc57 LK |
619 | { |
620 | struct iwl_scd_txq_cfg_cmd cmd = { | |
621 | .scd_queue = queue, | |
f7c692de | 622 | .action = SCD_CFG_DISABLE_QUEUE, |
58f2cc57 LK |
623 | }; |
624 | bool shared_queue; | |
625 | unsigned long mq; | |
626 | int ret; | |
627 | ||
bb49701b SS |
628 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
629 | return -EINVAL; | |
630 | ||
58f2cc57 LK |
631 | /* |
632 | * If the AC is lower than current one - FIFO needs to be redirected to | |
633 | * the lowest one of the streams in the queue. Check if this is needed | |
634 | * here. | |
635 | * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with | |
636 | * value 3 and VO with value 0, so to check if ac X is lower than ac Y | |
637 | * we need to check if the numerical value of X is LARGER than of Y. | |
638 | */ | |
639 | spin_lock_bh(&mvm->queue_info_lock); | |
640 | if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { | |
641 | spin_unlock_bh(&mvm->queue_info_lock); | |
642 | ||
643 | IWL_DEBUG_TX_QUEUES(mvm, | |
644 | "No redirection needed on TXQ #%d\n", | |
645 | queue); | |
646 | return 0; | |
647 | } | |
648 | ||
649 | cmd.sta_id = mvm->queue_info[queue].ra_sta_id; | |
650 | cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; | |
edbe961c | 651 | cmd.tid = mvm->queue_info[queue].txq_tid; |
34e10860 | 652 | mq = mvm->hw_queue_to_mac80211[queue]; |
58f2cc57 LK |
653 | shared_queue = (mvm->queue_info[queue].hw_queue_refcount > 1); |
654 | spin_unlock_bh(&mvm->queue_info_lock); | |
655 | ||
9f9af3d7 | 656 | IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", |
58f2cc57 LK |
657 | queue, iwl_mvm_ac_to_tx_fifo[ac]); |
658 | ||
659 | /* Stop MAC queues and wait for this queue to empty */ | |
660 | iwl_mvm_stop_mac_queues(mvm, mq); | |
a1a57877 | 661 | ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); |
58f2cc57 LK |
662 | if (ret) { |
663 | IWL_ERR(mvm, "Error draining queue %d before reconfig\n", | |
664 | queue); | |
665 | ret = -EIO; | |
666 | goto out; | |
667 | } | |
668 | ||
669 | /* Before redirecting the queue we need to de-activate it */ | |
670 | iwl_trans_txq_disable(mvm->trans, queue, false); | |
671 | ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); | |
672 | if (ret) | |
673 | IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, | |
674 | ret); | |
675 | ||
676 | /* Make sure the SCD wrptr is correctly set before reconfiguring */ | |
ca3b9c6b | 677 | iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); |
58f2cc57 | 678 | |
edbe961c LK |
679 | /* Update the TID "owner" of the queue */ |
680 | spin_lock_bh(&mvm->queue_info_lock); | |
681 | mvm->queue_info[queue].txq_tid = tid; | |
682 | spin_unlock_bh(&mvm->queue_info_lock); | |
683 | ||
58f2cc57 LK |
684 | /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ |
685 | ||
686 | /* Redirect to lower AC */ | |
687 | iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], | |
688 | cmd.sta_id, tid, LINK_QUAL_AGG_FRAME_LIMIT_DEF, | |
689 | ssn); | |
690 | ||
691 | /* Update AC marking of the queue */ | |
692 | spin_lock_bh(&mvm->queue_info_lock); | |
693 | mvm->queue_info[queue].mac80211_ac = ac; | |
694 | spin_unlock_bh(&mvm->queue_info_lock); | |
695 | ||
696 | /* | |
697 | * Mark queue as shared in transport if shared | |
698 | * Note this has to be done after queue enablement because enablement | |
699 | * can also set this value, and there is no indication there to shared | |
700 | * queues | |
701 | */ | |
702 | if (shared_queue) | |
703 | iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); | |
704 | ||
705 | out: | |
706 | /* Continue using the MAC queues */ | |
707 | iwl_mvm_start_mac_queues(mvm, mq); | |
708 | ||
709 | return ret; | |
710 | } | |
711 | ||
310181ec SS |
712 | static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, |
713 | struct ieee80211_sta *sta, u8 ac, | |
714 | int tid) | |
715 | { | |
716 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
717 | unsigned int wdg_timeout = | |
718 | iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); | |
719 | u8 mac_queue = mvmsta->vif->hw_queue[ac]; | |
720 | int queue = -1; | |
721 | ||
722 | lockdep_assert_held(&mvm->mutex); | |
723 | ||
724 | IWL_DEBUG_TX_QUEUES(mvm, | |
725 | "Allocating queue for sta %d on tid %d\n", | |
726 | mvmsta->sta_id, tid); | |
727 | queue = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, mvmsta->sta_id, tid, | |
728 | wdg_timeout); | |
729 | if (queue < 0) | |
730 | return queue; | |
731 | ||
732 | IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); | |
733 | ||
734 | spin_lock_bh(&mvmsta->lock); | |
735 | mvmsta->tid_data[tid].txq_id = queue; | |
736 | mvmsta->tid_data[tid].is_tid_active = true; | |
310181ec SS |
737 | spin_unlock_bh(&mvmsta->lock); |
738 | ||
310181ec SS |
739 | return 0; |
740 | } | |
741 | ||
24afba76 LK |
742 | static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, |
743 | struct ieee80211_sta *sta, u8 ac, int tid, | |
744 | struct ieee80211_hdr *hdr) | |
745 | { | |
746 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
747 | struct iwl_trans_txq_scd_cfg cfg = { | |
cf6c6ea3 | 748 | .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), |
24afba76 LK |
749 | .sta_id = mvmsta->sta_id, |
750 | .tid = tid, | |
751 | .frame_limit = IWL_FRAME_LIMIT, | |
752 | }; | |
753 | unsigned int wdg_timeout = | |
754 | iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); | |
755 | u8 mac_queue = mvmsta->vif->hw_queue[ac]; | |
756 | int queue = -1; | |
01796ff2 | 757 | bool using_inactive_queue = false, same_sta = false; |
9794c64f LK |
758 | unsigned long disable_agg_tids = 0; |
759 | enum iwl_mvm_agg_state queue_state; | |
dcfbd67b | 760 | bool shared_queue = false, inc_ssn; |
24afba76 | 761 | int ssn; |
42db09c1 | 762 | unsigned long tfd_queue_mask; |
cf961e16 | 763 | int ret; |
24afba76 LK |
764 | |
765 | lockdep_assert_held(&mvm->mutex); | |
766 | ||
310181ec SS |
767 | if (iwl_mvm_has_new_tx_api(mvm)) |
768 | return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); | |
769 | ||
42db09c1 LK |
770 | spin_lock_bh(&mvmsta->lock); |
771 | tfd_queue_mask = mvmsta->tfd_queue_msk; | |
772 | spin_unlock_bh(&mvmsta->lock); | |
773 | ||
d2515a99 | 774 | spin_lock_bh(&mvm->queue_info_lock); |
24afba76 LK |
775 | |
776 | /* | |
777 | * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one | |
778 | * exists | |
779 | */ | |
780 | if (!ieee80211_is_data_qos(hdr->frame_control) || | |
781 | ieee80211_is_qos_nullfunc(hdr->frame_control)) { | |
9794c64f LK |
782 | queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, |
783 | IWL_MVM_DQA_MIN_MGMT_QUEUE, | |
24afba76 LK |
784 | IWL_MVM_DQA_MAX_MGMT_QUEUE); |
785 | if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) | |
786 | IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", | |
787 | queue); | |
788 | ||
789 | /* If no such queue is found, we'll use a DATA queue instead */ | |
790 | } | |
791 | ||
9794c64f LK |
792 | if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && |
793 | (mvm->queue_info[mvmsta->reserved_queue].status == | |
794 | IWL_MVM_QUEUE_RESERVED || | |
795 | mvm->queue_info[mvmsta->reserved_queue].status == | |
796 | IWL_MVM_QUEUE_INACTIVE)) { | |
24afba76 | 797 | queue = mvmsta->reserved_queue; |
9794c64f | 798 | mvm->queue_info[queue].reserved = true; |
24afba76 LK |
799 | IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); |
800 | } | |
801 | ||
802 | if (queue < 0) | |
9794c64f LK |
803 | queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, |
804 | IWL_MVM_DQA_MIN_DATA_QUEUE, | |
24afba76 | 805 | IWL_MVM_DQA_MAX_DATA_QUEUE); |
cf961e16 | 806 | |
9794c64f LK |
807 | /* |
808 | * Check if this queue is already allocated but inactive. | |
809 | * In such a case, we'll need to first free this queue before enabling | |
810 | * it again, so we'll mark it as reserved to make sure no new traffic | |
811 | * arrives on it | |
812 | */ | |
813 | if (queue > 0 && | |
814 | mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { | |
815 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; | |
816 | using_inactive_queue = true; | |
01796ff2 | 817 | same_sta = mvm->queue_info[queue].ra_sta_id == mvmsta->sta_id; |
9794c64f LK |
818 | IWL_DEBUG_TX_QUEUES(mvm, |
819 | "Re-assigning TXQ %d: sta_id=%d, tid=%d\n", | |
820 | queue, mvmsta->sta_id, tid); | |
821 | } | |
822 | ||
42db09c1 LK |
823 | /* No free queue - we'll have to share */ |
824 | if (queue <= 0) { | |
825 | queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); | |
826 | if (queue > 0) { | |
827 | shared_queue = true; | |
828 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; | |
829 | } | |
830 | } | |
831 | ||
cf961e16 LK |
832 | /* |
833 | * Mark TXQ as ready, even though it hasn't been fully configured yet, | |
834 | * to make sure no one else takes it. | |
835 | * This will allow avoiding re-acquiring the lock at the end of the | |
836 | * configuration. On error we'll mark it back as free. | |
837 | */ | |
42db09c1 | 838 | if ((queue > 0) && !shared_queue) |
cf961e16 | 839 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; |
24afba76 | 840 | |
d2515a99 | 841 | spin_unlock_bh(&mvm->queue_info_lock); |
24afba76 | 842 | |
42db09c1 LK |
843 | /* This shouldn't happen - out of queues */ |
844 | if (WARN_ON(queue <= 0)) { | |
845 | IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", | |
846 | tid, cfg.sta_id); | |
9f9af3d7 | 847 | return queue; |
42db09c1 | 848 | } |
24afba76 LK |
849 | |
850 | /* | |
851 | * Actual en/disablement of aggregations is through the ADD_STA HCMD, | |
852 | * but for configuring the SCD to send A-MPDUs we need to mark the queue | |
853 | * as aggregatable. | |
854 | * Mark all DATA queues as allowing to be aggregated at some point | |
855 | */ | |
d5216a28 LK |
856 | cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || |
857 | queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); | |
24afba76 | 858 | |
9794c64f LK |
859 | /* |
860 | * If this queue was previously inactive (idle) - we need to free it | |
861 | * first | |
862 | */ | |
863 | if (using_inactive_queue) { | |
01796ff2 SS |
864 | ret = iwl_mvm_free_inactive_queue(mvm, queue, same_sta); |
865 | if (ret) | |
9794c64f | 866 | return ret; |
9794c64f LK |
867 | } |
868 | ||
42db09c1 LK |
869 | IWL_DEBUG_TX_QUEUES(mvm, |
870 | "Allocating %squeue #%d to sta %d on tid %d\n", | |
871 | shared_queue ? "shared " : "", queue, | |
872 | mvmsta->sta_id, tid); | |
873 | ||
874 | if (shared_queue) { | |
875 | /* Disable any open aggs on this queue */ | |
876 | disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); | |
877 | ||
878 | if (disable_agg_tids) { | |
879 | IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", | |
880 | queue); | |
881 | iwl_mvm_invalidate_sta_queue(mvm, queue, | |
882 | disable_agg_tids, false); | |
883 | } | |
42db09c1 | 884 | } |
24afba76 LK |
885 | |
886 | ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); | |
dcfbd67b EG |
887 | inc_ssn = iwl_mvm_enable_txq(mvm, queue, mac_queue, |
888 | ssn, &cfg, wdg_timeout); | |
889 | if (inc_ssn) { | |
890 | ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; | |
891 | le16_add_cpu(&hdr->seq_ctrl, 0x10); | |
892 | } | |
24afba76 | 893 | |
58f2cc57 LK |
894 | /* |
895 | * Mark queue as shared in transport if shared | |
896 | * Note this has to be done after queue enablement because enablement | |
897 | * can also set this value, and there is no indication there to shared | |
898 | * queues | |
899 | */ | |
900 | if (shared_queue) | |
901 | iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); | |
902 | ||
24afba76 | 903 | spin_lock_bh(&mvmsta->lock); |
dcfbd67b EG |
904 | /* |
905 | * This looks racy, but it is not. We have only one packet for | |
906 | * this ra/tid in our Tx path since we stop the Qdisc when we | |
907 | * need to allocate a new TFD queue. | |
908 | */ | |
909 | if (inc_ssn) | |
910 | mvmsta->tid_data[tid].seq_number += 0x10; | |
24afba76 | 911 | mvmsta->tid_data[tid].txq_id = queue; |
9794c64f | 912 | mvmsta->tid_data[tid].is_tid_active = true; |
24afba76 | 913 | mvmsta->tfd_queue_msk |= BIT(queue); |
9794c64f | 914 | queue_state = mvmsta->tid_data[tid].state; |
24afba76 LK |
915 | |
916 | if (mvmsta->reserved_queue == queue) | |
917 | mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; | |
918 | spin_unlock_bh(&mvmsta->lock); | |
919 | ||
42db09c1 LK |
920 | if (!shared_queue) { |
921 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); | |
922 | if (ret) | |
923 | goto out_err; | |
cf961e16 | 924 | |
42db09c1 LK |
925 | /* If we need to re-enable aggregations... */ |
926 | if (queue_state == IWL_AGG_ON) { | |
927 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); | |
928 | if (ret) | |
929 | goto out_err; | |
930 | } | |
58f2cc57 LK |
931 | } else { |
932 | /* Redirect queue, if needed */ | |
933 | ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, ac, ssn, | |
934 | wdg_timeout, false); | |
935 | if (ret) | |
936 | goto out_err; | |
42db09c1 | 937 | } |
9794c64f | 938 | |
42db09c1 | 939 | return 0; |
cf961e16 LK |
940 | |
941 | out_err: | |
942 | iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0); | |
943 | ||
944 | return ret; | |
24afba76 LK |
945 | } |
946 | ||
19aefa45 LK |
947 | static void iwl_mvm_change_queue_owner(struct iwl_mvm *mvm, int queue) |
948 | { | |
949 | struct iwl_scd_txq_cfg_cmd cmd = { | |
950 | .scd_queue = queue, | |
951 | .action = SCD_CFG_UPDATE_QUEUE_TID, | |
952 | }; | |
19aefa45 LK |
953 | int tid; |
954 | unsigned long tid_bitmap; | |
955 | int ret; | |
956 | ||
957 | lockdep_assert_held(&mvm->mutex); | |
958 | ||
bb49701b SS |
959 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
960 | return; | |
961 | ||
19aefa45 | 962 | spin_lock_bh(&mvm->queue_info_lock); |
19aefa45 LK |
963 | tid_bitmap = mvm->queue_info[queue].tid_bitmap; |
964 | spin_unlock_bh(&mvm->queue_info_lock); | |
965 | ||
966 | if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) | |
967 | return; | |
968 | ||
969 | /* Find any TID for queue */ | |
970 | tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); | |
971 | cmd.tid = tid; | |
972 | cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; | |
973 | ||
974 | ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); | |
341ca402 | 975 | if (ret) { |
19aefa45 LK |
976 | IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", |
977 | queue, ret); | |
341ca402 LK |
978 | return; |
979 | } | |
980 | ||
981 | spin_lock_bh(&mvm->queue_info_lock); | |
982 | mvm->queue_info[queue].txq_tid = tid; | |
983 | spin_unlock_bh(&mvm->queue_info_lock); | |
984 | IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", | |
985 | queue, tid); | |
19aefa45 LK |
986 | } |
987 | ||
9f9af3d7 LK |
988 | static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) |
989 | { | |
990 | struct ieee80211_sta *sta; | |
991 | struct iwl_mvm_sta *mvmsta; | |
806911da | 992 | u8 sta_id; |
9f9af3d7 LK |
993 | int tid = -1; |
994 | unsigned long tid_bitmap; | |
995 | unsigned int wdg_timeout; | |
996 | int ssn; | |
997 | int ret = true; | |
998 | ||
bb49701b SS |
999 | /* queue sharing is disabled on new TX path */ |
1000 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) | |
1001 | return; | |
1002 | ||
9f9af3d7 LK |
1003 | lockdep_assert_held(&mvm->mutex); |
1004 | ||
1005 | spin_lock_bh(&mvm->queue_info_lock); | |
1006 | sta_id = mvm->queue_info[queue].ra_sta_id; | |
1007 | tid_bitmap = mvm->queue_info[queue].tid_bitmap; | |
1008 | spin_unlock_bh(&mvm->queue_info_lock); | |
1009 | ||
1010 | /* Find TID for queue, and make sure it is the only one on the queue */ | |
1011 | tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); | |
1012 | if (tid_bitmap != BIT(tid)) { | |
1013 | IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", | |
1014 | queue, tid_bitmap); | |
1015 | return; | |
1016 | } | |
1017 | ||
1018 | IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, | |
1019 | tid); | |
1020 | ||
1021 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1022 | lockdep_is_held(&mvm->mutex)); | |
1023 | ||
1024 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) | |
1025 | return; | |
1026 | ||
1027 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
1028 | wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); | |
1029 | ||
1030 | ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); | |
1031 | ||
1032 | ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, | |
1033 | tid_to_mac80211_ac[tid], ssn, | |
1034 | wdg_timeout, true); | |
1035 | if (ret) { | |
1036 | IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); | |
1037 | return; | |
1038 | } | |
1039 | ||
1040 | /* If aggs should be turned back on - do it */ | |
1041 | if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { | |
9cd70e80 | 1042 | struct iwl_mvm_add_sta_cmd cmd = {0}; |
9f9af3d7 LK |
1043 | |
1044 | mvmsta->tid_disable_agg &= ~BIT(tid); | |
1045 | ||
1046 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
1047 | cmd.sta_id = mvmsta->sta_id; | |
1048 | cmd.add_modify = STA_MODE_MODIFY; | |
1049 | cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; | |
1050 | cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); | |
1051 | cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); | |
1052 | ||
1053 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, | |
1054 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
1055 | if (!ret) { | |
1056 | IWL_DEBUG_TX_QUEUES(mvm, | |
1057 | "TXQ #%d is now aggregated again\n", | |
1058 | queue); | |
1059 | ||
1060 | /* Mark queue intenally as aggregating again */ | |
1061 | iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); | |
1062 | } | |
1063 | } | |
1064 | ||
1065 | spin_lock_bh(&mvm->queue_info_lock); | |
1066 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; | |
1067 | spin_unlock_bh(&mvm->queue_info_lock); | |
1068 | } | |
1069 | ||
24afba76 LK |
1070 | static inline u8 iwl_mvm_tid_to_ac_queue(int tid) |
1071 | { | |
1072 | if (tid == IWL_MAX_TID_COUNT) | |
1073 | return IEEE80211_AC_VO; /* MGMT */ | |
1074 | ||
1075 | return tid_to_mac80211_ac[tid]; | |
1076 | } | |
1077 | ||
1078 | static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, | |
1079 | struct ieee80211_sta *sta, int tid) | |
1080 | { | |
1081 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
1082 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; | |
1083 | struct sk_buff *skb; | |
1084 | struct ieee80211_hdr *hdr; | |
1085 | struct sk_buff_head deferred_tx; | |
1086 | u8 mac_queue; | |
1087 | bool no_queue = false; /* Marks if there is a problem with the queue */ | |
1088 | u8 ac; | |
1089 | ||
1090 | lockdep_assert_held(&mvm->mutex); | |
1091 | ||
1092 | skb = skb_peek(&tid_data->deferred_tx_frames); | |
1093 | if (!skb) | |
1094 | return; | |
1095 | hdr = (void *)skb->data; | |
1096 | ||
1097 | ac = iwl_mvm_tid_to_ac_queue(tid); | |
1098 | mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; | |
1099 | ||
6862fcee | 1100 | if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE && |
24afba76 LK |
1101 | iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { |
1102 | IWL_ERR(mvm, | |
1103 | "Can't alloc TXQ for sta %d tid %d - dropping frame\n", | |
1104 | mvmsta->sta_id, tid); | |
1105 | ||
1106 | /* | |
1107 | * Mark queue as problematic so later the deferred traffic is | |
1108 | * freed, as we can do nothing with it | |
1109 | */ | |
1110 | no_queue = true; | |
1111 | } | |
1112 | ||
1113 | __skb_queue_head_init(&deferred_tx); | |
1114 | ||
d2515a99 LK |
1115 | /* Disable bottom-halves when entering TX path */ |
1116 | local_bh_disable(); | |
24afba76 LK |
1117 | spin_lock(&mvmsta->lock); |
1118 | skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); | |
ad5de737 | 1119 | mvmsta->deferred_traffic_tid_map &= ~BIT(tid); |
24afba76 LK |
1120 | spin_unlock(&mvmsta->lock); |
1121 | ||
24afba76 LK |
1122 | while ((skb = __skb_dequeue(&deferred_tx))) |
1123 | if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) | |
1124 | ieee80211_free_txskb(mvm->hw, skb); | |
1125 | local_bh_enable(); | |
1126 | ||
1127 | /* Wake queue */ | |
1128 | iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); | |
1129 | } | |
1130 | ||
1131 | void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) | |
1132 | { | |
1133 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, | |
1134 | add_stream_wk); | |
1135 | struct ieee80211_sta *sta; | |
1136 | struct iwl_mvm_sta *mvmsta; | |
1137 | unsigned long deferred_tid_traffic; | |
9f9af3d7 | 1138 | int queue, sta_id, tid; |
24afba76 | 1139 | |
9794c64f LK |
1140 | /* Check inactivity of queues */ |
1141 | iwl_mvm_inactivity_check(mvm); | |
1142 | ||
24afba76 LK |
1143 | mutex_lock(&mvm->mutex); |
1144 | ||
34e10860 SS |
1145 | /* No queue reconfiguration in TVQM mode */ |
1146 | if (iwl_mvm_has_new_tx_api(mvm)) | |
1147 | goto alloc_queues; | |
1148 | ||
9f9af3d7 | 1149 | /* Reconfigure queues requiring reconfiguation */ |
34e10860 | 1150 | for (queue = 0; queue < ARRAY_SIZE(mvm->queue_info); queue++) { |
9f9af3d7 | 1151 | bool reconfig; |
19aefa45 | 1152 | bool change_owner; |
9f9af3d7 LK |
1153 | |
1154 | spin_lock_bh(&mvm->queue_info_lock); | |
1155 | reconfig = (mvm->queue_info[queue].status == | |
1156 | IWL_MVM_QUEUE_RECONFIGURING); | |
19aefa45 LK |
1157 | |
1158 | /* | |
1159 | * We need to take into account a situation in which a TXQ was | |
1160 | * allocated to TID x, and then turned shared by adding TIDs y | |
1161 | * and z. If TID x becomes inactive and is removed from the TXQ, | |
1162 | * ownership must be given to one of the remaining TIDs. | |
1163 | * This is mainly because if TID x continues - a new queue can't | |
1164 | * be allocated for it as long as it is an owner of another TXQ. | |
1165 | */ | |
1166 | change_owner = !(mvm->queue_info[queue].tid_bitmap & | |
1167 | BIT(mvm->queue_info[queue].txq_tid)) && | |
1168 | (mvm->queue_info[queue].status == | |
1169 | IWL_MVM_QUEUE_SHARED); | |
9f9af3d7 LK |
1170 | spin_unlock_bh(&mvm->queue_info_lock); |
1171 | ||
1172 | if (reconfig) | |
1173 | iwl_mvm_unshare_queue(mvm, queue); | |
19aefa45 LK |
1174 | else if (change_owner) |
1175 | iwl_mvm_change_queue_owner(mvm, queue); | |
9f9af3d7 LK |
1176 | } |
1177 | ||
34e10860 | 1178 | alloc_queues: |
24afba76 LK |
1179 | /* Go over all stations with deferred traffic */ |
1180 | for_each_set_bit(sta_id, mvm->sta_deferred_frames, | |
1181 | IWL_MVM_STATION_COUNT) { | |
1182 | clear_bit(sta_id, mvm->sta_deferred_frames); | |
1183 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1184 | lockdep_is_held(&mvm->mutex)); | |
1185 | if (IS_ERR_OR_NULL(sta)) | |
1186 | continue; | |
1187 | ||
1188 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
1189 | deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; | |
1190 | ||
1191 | for_each_set_bit(tid, &deferred_tid_traffic, | |
1192 | IWL_MAX_TID_COUNT + 1) | |
1193 | iwl_mvm_tx_deferred_stream(mvm, sta, tid); | |
1194 | } | |
1195 | ||
1196 | mutex_unlock(&mvm->mutex); | |
1197 | } | |
1198 | ||
1199 | static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, | |
d5216a28 LK |
1200 | struct ieee80211_sta *sta, |
1201 | enum nl80211_iftype vif_type) | |
24afba76 LK |
1202 | { |
1203 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
1204 | int queue; | |
01796ff2 | 1205 | bool using_inactive_queue = false, same_sta = false; |
24afba76 | 1206 | |
396952ee SS |
1207 | /* queue reserving is disabled on new TX path */ |
1208 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) | |
1209 | return 0; | |
1210 | ||
9794c64f LK |
1211 | /* |
1212 | * Check for inactive queues, so we don't reach a situation where we | |
1213 | * can't add a STA due to a shortage in queues that doesn't really exist | |
1214 | */ | |
1215 | iwl_mvm_inactivity_check(mvm); | |
1216 | ||
24afba76 LK |
1217 | spin_lock_bh(&mvm->queue_info_lock); |
1218 | ||
1219 | /* Make sure we have free resources for this STA */ | |
d5216a28 LK |
1220 | if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && |
1221 | !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount && | |
cf961e16 LK |
1222 | (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == |
1223 | IWL_MVM_QUEUE_FREE)) | |
d5216a28 LK |
1224 | queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; |
1225 | else | |
9794c64f LK |
1226 | queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, |
1227 | IWL_MVM_DQA_MIN_DATA_QUEUE, | |
d5216a28 | 1228 | IWL_MVM_DQA_MAX_DATA_QUEUE); |
24afba76 LK |
1229 | if (queue < 0) { |
1230 | spin_unlock_bh(&mvm->queue_info_lock); | |
1231 | IWL_ERR(mvm, "No available queues for new station\n"); | |
1232 | return -ENOSPC; | |
01796ff2 SS |
1233 | } else if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { |
1234 | /* | |
1235 | * If this queue is already allocated but inactive we'll need to | |
1236 | * first free this queue before enabling it again, we'll mark | |
1237 | * it as reserved to make sure no new traffic arrives on it | |
1238 | */ | |
1239 | using_inactive_queue = true; | |
1240 | same_sta = mvm->queue_info[queue].ra_sta_id == mvmsta->sta_id; | |
24afba76 | 1241 | } |
cf961e16 | 1242 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; |
24afba76 LK |
1243 | |
1244 | spin_unlock_bh(&mvm->queue_info_lock); | |
1245 | ||
1246 | mvmsta->reserved_queue = queue; | |
1247 | ||
01796ff2 SS |
1248 | if (using_inactive_queue) |
1249 | iwl_mvm_free_inactive_queue(mvm, queue, same_sta); | |
1250 | ||
24afba76 LK |
1251 | IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", |
1252 | queue, mvmsta->sta_id); | |
1253 | ||
1254 | return 0; | |
1255 | } | |
1256 | ||
8d98ae6e LK |
1257 | /* |
1258 | * In DQA mode, after a HW restart the queues should be allocated as before, in | |
1259 | * order to avoid race conditions when there are shared queues. This function | |
1260 | * does the re-mapping and queue allocation. | |
1261 | * | |
1262 | * Note that re-enabling aggregations isn't done in this function. | |
1263 | */ | |
1264 | static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, | |
1265 | struct iwl_mvm_sta *mvm_sta) | |
1266 | { | |
1267 | unsigned int wdg_timeout = | |
1268 | iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); | |
1269 | int i; | |
1270 | struct iwl_trans_txq_scd_cfg cfg = { | |
1271 | .sta_id = mvm_sta->sta_id, | |
1272 | .frame_limit = IWL_FRAME_LIMIT, | |
1273 | }; | |
1274 | ||
03c902bf JB |
1275 | /* Make sure reserved queue is still marked as such (if allocated) */ |
1276 | if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) | |
1277 | mvm->queue_info[mvm_sta->reserved_queue].status = | |
1278 | IWL_MVM_QUEUE_RESERVED; | |
8d98ae6e LK |
1279 | |
1280 | for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { | |
1281 | struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; | |
1282 | int txq_id = tid_data->txq_id; | |
1283 | int ac; | |
1284 | u8 mac_queue; | |
1285 | ||
6862fcee | 1286 | if (txq_id == IWL_MVM_INVALID_QUEUE) |
8d98ae6e LK |
1287 | continue; |
1288 | ||
1289 | skb_queue_head_init(&tid_data->deferred_tx_frames); | |
1290 | ||
1291 | ac = tid_to_mac80211_ac[i]; | |
1292 | mac_queue = mvm_sta->vif->hw_queue[ac]; | |
1293 | ||
310181ec SS |
1294 | if (iwl_mvm_has_new_tx_api(mvm)) { |
1295 | IWL_DEBUG_TX_QUEUES(mvm, | |
1296 | "Re-mapping sta %d tid %d\n", | |
1297 | mvm_sta->sta_id, i); | |
1298 | txq_id = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, | |
1299 | mvm_sta->sta_id, | |
1300 | i, wdg_timeout); | |
1301 | tid_data->txq_id = txq_id; | |
1302 | } else { | |
1303 | u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); | |
8d98ae6e | 1304 | |
310181ec | 1305 | cfg.tid = i; |
cf6c6ea3 | 1306 | cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); |
310181ec SS |
1307 | cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || |
1308 | txq_id == | |
1309 | IWL_MVM_DQA_BSS_CLIENT_QUEUE); | |
8d98ae6e | 1310 | |
310181ec SS |
1311 | IWL_DEBUG_TX_QUEUES(mvm, |
1312 | "Re-mapping sta %d tid %d to queue %d\n", | |
1313 | mvm_sta->sta_id, i, txq_id); | |
1314 | ||
1315 | iwl_mvm_enable_txq(mvm, txq_id, mac_queue, seq, &cfg, | |
1316 | wdg_timeout); | |
34e10860 | 1317 | mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; |
310181ec | 1318 | } |
8d98ae6e LK |
1319 | } |
1320 | ||
1321 | atomic_set(&mvm->pending_frames[mvm_sta->sta_id], 0); | |
1322 | } | |
1323 | ||
8ca151b5 JB |
1324 | int iwl_mvm_add_sta(struct iwl_mvm *mvm, |
1325 | struct ieee80211_vif *vif, | |
1326 | struct ieee80211_sta *sta) | |
1327 | { | |
1328 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 1329 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
a571f5f6 | 1330 | struct iwl_mvm_rxq_dup_data *dup_data; |
8ca151b5 JB |
1331 | int i, ret, sta_id; |
1332 | ||
1333 | lockdep_assert_held(&mvm->mutex); | |
1334 | ||
1335 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) | |
b92e661b EP |
1336 | sta_id = iwl_mvm_find_free_sta_id(mvm, |
1337 | ieee80211_vif_type_p2p(vif)); | |
8ca151b5 JB |
1338 | else |
1339 | sta_id = mvm_sta->sta_id; | |
1340 | ||
0ae98812 | 1341 | if (sta_id == IWL_MVM_INVALID_STA) |
8ca151b5 JB |
1342 | return -ENOSPC; |
1343 | ||
1344 | spin_lock_init(&mvm_sta->lock); | |
1345 | ||
8d98ae6e LK |
1346 | /* In DQA mode, if this is a HW restart, re-alloc existing queues */ |
1347 | if (iwl_mvm_is_dqa_supported(mvm) && | |
1348 | test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
1349 | iwl_mvm_realloc_queues_after_restart(mvm, mvm_sta); | |
1350 | goto update_fw; | |
1351 | } | |
1352 | ||
8ca151b5 JB |
1353 | mvm_sta->sta_id = sta_id; |
1354 | mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, | |
1355 | mvmvif->color); | |
1356 | mvm_sta->vif = vif; | |
a58bb468 LK |
1357 | if (!mvm->trans->cfg->gen2) |
1358 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
1359 | else | |
1360 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; | |
9ee718aa EL |
1361 | mvm_sta->tx_protection = 0; |
1362 | mvm_sta->tt_tx_protection = false; | |
ced19f26 | 1363 | mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; |
8ca151b5 JB |
1364 | |
1365 | /* HW restart, don't assume the memory has been zeroed */ | |
e3d4bc8c | 1366 | atomic_set(&mvm->pending_frames[sta_id], 0); |
69191afe | 1367 | mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ |
8ca151b5 | 1368 | mvm_sta->tfd_queue_msk = 0; |
a0f6bf2a | 1369 | |
e3118ad7 LK |
1370 | /* |
1371 | * Allocate new queues for a TDLS station, unless we're in DQA mode, | |
1372 | * and then they'll be allocated dynamically | |
1373 | */ | |
1374 | if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) { | |
a0f6bf2a AN |
1375 | ret = iwl_mvm_tdls_sta_init(mvm, sta); |
1376 | if (ret) | |
1377 | return ret; | |
24afba76 | 1378 | } else if (!iwl_mvm_is_dqa_supported(mvm)) { |
a0f6bf2a AN |
1379 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
1380 | if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) | |
1381 | mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); | |
1382 | } | |
8ca151b5 | 1383 | |
6d9d32b8 | 1384 | /* for HW restart - reset everything but the sequence number */ |
24afba76 | 1385 | for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { |
6d9d32b8 JB |
1386 | u16 seq = mvm_sta->tid_data[i].seq_number; |
1387 | memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); | |
1388 | mvm_sta->tid_data[i].seq_number = seq; | |
24afba76 LK |
1389 | |
1390 | if (!iwl_mvm_is_dqa_supported(mvm)) | |
1391 | continue; | |
1392 | ||
1393 | /* | |
1394 | * Mark all queues for this STA as unallocated and defer TX | |
1395 | * frames until the queue is allocated | |
1396 | */ | |
6862fcee | 1397 | mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; |
24afba76 | 1398 | skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); |
6d9d32b8 | 1399 | } |
24afba76 | 1400 | mvm_sta->deferred_traffic_tid_map = 0; |
efed6640 | 1401 | mvm_sta->agg_tids = 0; |
8ca151b5 | 1402 | |
a571f5f6 SS |
1403 | if (iwl_mvm_has_new_rx_api(mvm) && |
1404 | !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
92c4dca6 JB |
1405 | int q; |
1406 | ||
a571f5f6 | 1407 | dup_data = kcalloc(mvm->trans->num_rx_queues, |
92c4dca6 | 1408 | sizeof(*dup_data), GFP_KERNEL); |
a571f5f6 SS |
1409 | if (!dup_data) |
1410 | return -ENOMEM; | |
92c4dca6 JB |
1411 | /* |
1412 | * Initialize all the last_seq values to 0xffff which can never | |
1413 | * compare equal to the frame's seq_ctrl in the check in | |
1414 | * iwl_mvm_is_dup() since the lower 4 bits are the fragment | |
1415 | * number and fragmented packets don't reach that function. | |
1416 | * | |
1417 | * This thus allows receiving a packet with seqno 0 and the | |
1418 | * retry bit set as the very first packet on a new TID. | |
1419 | */ | |
1420 | for (q = 0; q < mvm->trans->num_rx_queues; q++) | |
1421 | memset(dup_data[q].last_seq, 0xff, | |
1422 | sizeof(dup_data[q].last_seq)); | |
a571f5f6 SS |
1423 | mvm_sta->dup_data = dup_data; |
1424 | } | |
1425 | ||
396952ee | 1426 | if (iwl_mvm_is_dqa_supported(mvm) && !iwl_mvm_has_new_tx_api(mvm)) { |
d5216a28 LK |
1427 | ret = iwl_mvm_reserve_sta_stream(mvm, sta, |
1428 | ieee80211_vif_type_p2p(vif)); | |
24afba76 LK |
1429 | if (ret) |
1430 | goto err; | |
1431 | } | |
1432 | ||
8d98ae6e | 1433 | update_fw: |
24afba76 | 1434 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0); |
8ca151b5 | 1435 | if (ret) |
a0f6bf2a | 1436 | goto err; |
8ca151b5 | 1437 | |
9e848010 JB |
1438 | if (vif->type == NL80211_IFTYPE_STATION) { |
1439 | if (!sta->tdls) { | |
0ae98812 | 1440 | WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); |
9e848010 JB |
1441 | mvmvif->ap_sta_id = sta_id; |
1442 | } else { | |
0ae98812 | 1443 | WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); |
9e848010 JB |
1444 | } |
1445 | } | |
8ca151b5 JB |
1446 | |
1447 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); | |
1448 | ||
1449 | return 0; | |
a0f6bf2a AN |
1450 | |
1451 | err: | |
e3118ad7 LK |
1452 | if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) |
1453 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
a0f6bf2a | 1454 | return ret; |
8ca151b5 JB |
1455 | } |
1456 | ||
1457 | int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, | |
1458 | bool drain) | |
1459 | { | |
f9dc0004 | 1460 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
1461 | int ret; |
1462 | u32 status; | |
1463 | ||
1464 | lockdep_assert_held(&mvm->mutex); | |
1465 | ||
1466 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
1467 | cmd.sta_id = mvmsta->sta_id; | |
1468 | cmd.add_modify = STA_MODE_MODIFY; | |
1469 | cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; | |
1470 | cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); | |
1471 | ||
1472 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
1473 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
1474 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 1475 | &cmd, &status); |
8ca151b5 JB |
1476 | if (ret) |
1477 | return ret; | |
1478 | ||
837c4da9 | 1479 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
1480 | case ADD_STA_SUCCESS: |
1481 | IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", | |
1482 | mvmsta->sta_id); | |
1483 | break; | |
1484 | default: | |
1485 | ret = -EIO; | |
1486 | IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", | |
1487 | mvmsta->sta_id); | |
1488 | break; | |
1489 | } | |
1490 | ||
1491 | return ret; | |
1492 | } | |
1493 | ||
1494 | /* | |
1495 | * Remove a station from the FW table. Before sending the command to remove | |
1496 | * the station validate that the station is indeed known to the driver (sanity | |
1497 | * only). | |
1498 | */ | |
1499 | static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) | |
1500 | { | |
1501 | struct ieee80211_sta *sta; | |
1502 | struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { | |
1503 | .sta_id = sta_id, | |
1504 | }; | |
1505 | int ret; | |
1506 | ||
1507 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1508 | lockdep_is_held(&mvm->mutex)); | |
1509 | ||
1510 | /* Note: internal stations are marked as error values */ | |
1511 | if (!sta) { | |
1512 | IWL_ERR(mvm, "Invalid station id\n"); | |
1513 | return -EINVAL; | |
1514 | } | |
1515 | ||
a1022927 | 1516 | ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, |
8ca151b5 JB |
1517 | sizeof(rm_sta_cmd), &rm_sta_cmd); |
1518 | if (ret) { | |
1519 | IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); | |
1520 | return ret; | |
1521 | } | |
1522 | ||
1523 | return 0; | |
1524 | } | |
1525 | ||
1526 | void iwl_mvm_sta_drained_wk(struct work_struct *wk) | |
1527 | { | |
1528 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); | |
1529 | u8 sta_id; | |
1530 | ||
1531 | /* | |
1532 | * The mutex is needed because of the SYNC cmd, but not only: if the | |
1533 | * work would run concurrently with iwl_mvm_rm_sta, it would run before | |
1534 | * iwl_mvm_rm_sta sets the station as busy, and exit. Then | |
1535 | * iwl_mvm_rm_sta would set the station as busy, and nobody will clean | |
1536 | * that later. | |
1537 | */ | |
1538 | mutex_lock(&mvm->mutex); | |
1539 | ||
1540 | for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { | |
1541 | int ret; | |
1542 | struct ieee80211_sta *sta = | |
1543 | rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1544 | lockdep_is_held(&mvm->mutex)); | |
1545 | ||
1ddbbb0c JB |
1546 | /* |
1547 | * This station is in use or RCU-removed; the latter happens in | |
1548 | * managed mode, where mac80211 removes the station before we | |
1549 | * can remove it from firmware (we can only do that after the | |
1550 | * MAC is marked unassociated), and possibly while the deauth | |
1551 | * frame to disconnect from the AP is still queued. Then, the | |
1552 | * station pointer is -ENOENT when the last skb is reclaimed. | |
1553 | */ | |
1554 | if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) | |
8ca151b5 JB |
1555 | continue; |
1556 | ||
1557 | if (PTR_ERR(sta) == -EINVAL) { | |
1558 | IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", | |
1559 | sta_id); | |
1560 | continue; | |
1561 | } | |
1562 | ||
1563 | if (!sta) { | |
1564 | IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", | |
1565 | sta_id); | |
1566 | continue; | |
1567 | } | |
1568 | ||
1569 | WARN_ON(PTR_ERR(sta) != -EBUSY); | |
1570 | /* This station was removed and we waited until it got drained, | |
1571 | * we can now proceed and remove it. | |
1572 | */ | |
1573 | ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
1574 | if (ret) { | |
1575 | IWL_ERR(mvm, | |
1576 | "Couldn't remove sta %d after it was drained\n", | |
1577 | sta_id); | |
1578 | continue; | |
1579 | } | |
c531c771 | 1580 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 | 1581 | clear_bit(sta_id, mvm->sta_drained); |
a0f6bf2a AN |
1582 | |
1583 | if (mvm->tfd_drained[sta_id]) { | |
1584 | unsigned long i, msk = mvm->tfd_drained[sta_id]; | |
1585 | ||
a4ca3ed4 | 1586 | for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) |
06ecdba3 AN |
1587 | iwl_mvm_disable_txq(mvm, i, i, |
1588 | IWL_MAX_TID_COUNT, 0); | |
a0f6bf2a AN |
1589 | |
1590 | mvm->tfd_drained[sta_id] = 0; | |
1591 | IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", | |
1592 | sta_id, msk); | |
1593 | } | |
8ca151b5 JB |
1594 | } |
1595 | ||
1596 | mutex_unlock(&mvm->mutex); | |
1597 | } | |
1598 | ||
24afba76 LK |
1599 | static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, |
1600 | struct ieee80211_vif *vif, | |
1601 | struct iwl_mvm_sta *mvm_sta) | |
1602 | { | |
1603 | int ac; | |
1604 | int i; | |
1605 | ||
1606 | lockdep_assert_held(&mvm->mutex); | |
1607 | ||
1608 | for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { | |
6862fcee | 1609 | if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) |
24afba76 LK |
1610 | continue; |
1611 | ||
1612 | ac = iwl_mvm_tid_to_ac_queue(i); | |
1613 | iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, | |
1614 | vif->hw_queue[ac], i, 0); | |
6862fcee | 1615 | mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; |
24afba76 LK |
1616 | } |
1617 | } | |
1618 | ||
d6d517b7 SS |
1619 | int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, |
1620 | struct iwl_mvm_sta *mvm_sta) | |
1621 | { | |
1622 | int i, ret; | |
1623 | ||
1624 | for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { | |
1625 | u16 txq_id; | |
1626 | ||
1627 | spin_lock_bh(&mvm_sta->lock); | |
1628 | txq_id = mvm_sta->tid_data[i].txq_id; | |
1629 | spin_unlock_bh(&mvm_sta->lock); | |
1630 | ||
1631 | if (txq_id == IWL_MVM_INVALID_QUEUE) | |
1632 | continue; | |
1633 | ||
1634 | ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); | |
1635 | if (ret) | |
1636 | break; | |
1637 | } | |
1638 | ||
1639 | return ret; | |
1640 | } | |
1641 | ||
8ca151b5 JB |
1642 | int iwl_mvm_rm_sta(struct iwl_mvm *mvm, |
1643 | struct ieee80211_vif *vif, | |
1644 | struct ieee80211_sta *sta) | |
1645 | { | |
1646 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 1647 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
94c3e614 | 1648 | u8 sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1649 | int ret; |
1650 | ||
1651 | lockdep_assert_held(&mvm->mutex); | |
1652 | ||
a571f5f6 SS |
1653 | if (iwl_mvm_has_new_rx_api(mvm)) |
1654 | kfree(mvm_sta->dup_data); | |
1655 | ||
a6f035a0 | 1656 | if ((vif->type == NL80211_IFTYPE_STATION && |
94c3e614 | 1657 | mvmvif->ap_sta_id == sta_id) || |
a6f035a0 | 1658 | iwl_mvm_is_dqa_supported(mvm)){ |
fe92e32a EG |
1659 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
1660 | if (ret) | |
1661 | return ret; | |
80d85655 | 1662 | /* flush its queues here since we are freeing mvm_sta */ |
d49394a1 | 1663 | ret = iwl_mvm_flush_sta(mvm, mvm_sta, false, 0); |
fe92e32a EG |
1664 | if (ret) |
1665 | return ret; | |
d6d517b7 SS |
1666 | if (iwl_mvm_has_new_tx_api(mvm)) { |
1667 | ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); | |
1668 | } else { | |
1669 | u32 q_mask = mvm_sta->tfd_queue_msk; | |
1670 | ||
1671 | ret = iwl_trans_wait_tx_queues_empty(mvm->trans, | |
1672 | q_mask); | |
1673 | } | |
fe92e32a EG |
1674 | if (ret) |
1675 | return ret; | |
1676 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); | |
80d85655 | 1677 | |
24afba76 | 1678 | /* If DQA is supported - the queues can be disabled now */ |
94c3e614 | 1679 | if (iwl_mvm_is_dqa_supported(mvm)) { |
56214749 | 1680 | iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); |
94c3e614 SS |
1681 | /* |
1682 | * If pending_frames is set at this point - it must be | |
1683 | * driver internal logic error, since queues are empty | |
1684 | * and removed successuly. | |
1685 | * warn on it but set it to 0 anyway to avoid station | |
1686 | * not being removed later in the function | |
1687 | */ | |
1688 | WARN_ON(atomic_xchg(&mvm->pending_frames[sta_id], 0)); | |
1689 | } | |
56214749 LK |
1690 | |
1691 | /* If there is a TXQ still marked as reserved - free it */ | |
1692 | if (iwl_mvm_is_dqa_supported(mvm) && | |
1693 | mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { | |
a0315dea LK |
1694 | u8 reserved_txq = mvm_sta->reserved_queue; |
1695 | enum iwl_mvm_queue_status *status; | |
1696 | ||
a0315dea LK |
1697 | /* |
1698 | * If no traffic has gone through the reserved TXQ - it | |
1699 | * is still marked as IWL_MVM_QUEUE_RESERVED, and | |
1700 | * should be manually marked as free again | |
1701 | */ | |
1702 | spin_lock_bh(&mvm->queue_info_lock); | |
1703 | status = &mvm->queue_info[reserved_txq].status; | |
1704 | if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && | |
1705 | (*status != IWL_MVM_QUEUE_FREE), | |
1706 | "sta_id %d reserved txq %d status %d", | |
94c3e614 | 1707 | sta_id, reserved_txq, *status)) { |
a0315dea LK |
1708 | spin_unlock_bh(&mvm->queue_info_lock); |
1709 | return -EINVAL; | |
1710 | } | |
1711 | ||
1712 | *status = IWL_MVM_QUEUE_FREE; | |
1713 | spin_unlock_bh(&mvm->queue_info_lock); | |
1714 | } | |
1715 | ||
e3118ad7 | 1716 | if (vif->type == NL80211_IFTYPE_STATION && |
94c3e614 | 1717 | mvmvif->ap_sta_id == sta_id) { |
e3118ad7 LK |
1718 | /* if associated - we can't remove the AP STA now */ |
1719 | if (vif->bss_conf.assoc) | |
1720 | return ret; | |
8ca151b5 | 1721 | |
e3118ad7 | 1722 | /* unassoc - go ahead - remove the AP STA now */ |
0ae98812 | 1723 | mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; |
37577fe2 | 1724 | |
e3118ad7 | 1725 | /* clear d0i3_ap_sta_id if no longer relevant */ |
94c3e614 | 1726 | if (mvm->d0i3_ap_sta_id == sta_id) |
0ae98812 | 1727 | mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; |
e3118ad7 | 1728 | } |
8ca151b5 JB |
1729 | } |
1730 | ||
1d3c3f63 AN |
1731 | /* |
1732 | * This shouldn't happen - the TDLS channel switch should be canceled | |
1733 | * before the STA is removed. | |
1734 | */ | |
94c3e614 | 1735 | if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { |
0ae98812 | 1736 | mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; |
1d3c3f63 AN |
1737 | cancel_delayed_work(&mvm->tdls_cs.dwork); |
1738 | } | |
1739 | ||
e3d4bc8c EG |
1740 | /* |
1741 | * Make sure that the tx response code sees the station as -EBUSY and | |
1742 | * calls the drain worker. | |
1743 | */ | |
1744 | spin_lock_bh(&mvm_sta->lock); | |
94c3e614 | 1745 | |
8ca151b5 JB |
1746 | /* |
1747 | * There are frames pending on the AC queues for this station. | |
1748 | * We need to wait until all the frames are drained... | |
1749 | */ | |
94c3e614 SS |
1750 | if (atomic_read(&mvm->pending_frames[sta_id])) { |
1751 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], | |
8ca151b5 | 1752 | ERR_PTR(-EBUSY)); |
e3d4bc8c | 1753 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
1754 | |
1755 | /* disable TDLS sta queues on drain complete */ | |
1756 | if (sta->tdls) { | |
94c3e614 SS |
1757 | mvm->tfd_drained[sta_id] = mvm_sta->tfd_queue_msk; |
1758 | IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", sta_id); | |
a0f6bf2a AN |
1759 | } |
1760 | ||
e3d4bc8c | 1761 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
8ca151b5 | 1762 | } else { |
e3d4bc8c | 1763 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a | 1764 | |
e3118ad7 | 1765 | if (!iwl_mvm_is_dqa_supported(mvm) && sta->tdls) |
a0f6bf2a AN |
1766 | iwl_mvm_tdls_sta_deinit(mvm, sta); |
1767 | ||
8ca151b5 | 1768 | ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); |
c531c771 | 1769 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); |
8ca151b5 JB |
1770 | } |
1771 | ||
1772 | return ret; | |
1773 | } | |
1774 | ||
1775 | int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, | |
1776 | struct ieee80211_vif *vif, | |
1777 | u8 sta_id) | |
1778 | { | |
1779 | int ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
1780 | ||
1781 | lockdep_assert_held(&mvm->mutex); | |
1782 | ||
c531c771 | 1783 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 JB |
1784 | return ret; |
1785 | } | |
1786 | ||
0e39eb03 CRI |
1787 | int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, |
1788 | struct iwl_mvm_int_sta *sta, | |
ced19f26 SS |
1789 | u32 qmask, enum nl80211_iftype iftype, |
1790 | enum iwl_sta_type type) | |
8ca151b5 JB |
1791 | { |
1792 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
b92e661b | 1793 | sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); |
0ae98812 | 1794 | if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) |
8ca151b5 JB |
1795 | return -ENOSPC; |
1796 | } | |
1797 | ||
1798 | sta->tfd_queue_msk = qmask; | |
ced19f26 | 1799 | sta->type = type; |
8ca151b5 JB |
1800 | |
1801 | /* put a non-NULL value so iterating over the stations won't stop */ | |
1802 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); | |
1803 | return 0; | |
1804 | } | |
1805 | ||
26d6c16b | 1806 | void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) |
8ca151b5 | 1807 | { |
c531c771 | 1808 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); |
8ca151b5 | 1809 | memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); |
0ae98812 | 1810 | sta->sta_id = IWL_MVM_INVALID_STA; |
8ca151b5 JB |
1811 | } |
1812 | ||
1813 | static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, | |
1814 | struct iwl_mvm_int_sta *sta, | |
1815 | const u8 *addr, | |
1816 | u16 mac_id, u16 color) | |
1817 | { | |
f9dc0004 | 1818 | struct iwl_mvm_add_sta_cmd cmd; |
8ca151b5 JB |
1819 | int ret; |
1820 | u32 status; | |
1821 | ||
1822 | lockdep_assert_held(&mvm->mutex); | |
1823 | ||
f9dc0004 | 1824 | memset(&cmd, 0, sizeof(cmd)); |
8ca151b5 JB |
1825 | cmd.sta_id = sta->sta_id; |
1826 | cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, | |
1827 | color)); | |
ced19f26 SS |
1828 | if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) |
1829 | cmd.station_type = sta->type; | |
8ca151b5 | 1830 | |
bb49701b SS |
1831 | if (!iwl_mvm_has_new_tx_api(mvm)) |
1832 | cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); | |
cf0cda19 | 1833 | cmd.tid_disable_tx = cpu_to_le16(0xffff); |
8ca151b5 JB |
1834 | |
1835 | if (addr) | |
1836 | memcpy(cmd.addr, addr, ETH_ALEN); | |
1837 | ||
854c5705 SS |
1838 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
1839 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 1840 | &cmd, &status); |
8ca151b5 JB |
1841 | if (ret) |
1842 | return ret; | |
1843 | ||
837c4da9 | 1844 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
1845 | case ADD_STA_SUCCESS: |
1846 | IWL_DEBUG_INFO(mvm, "Internal station added.\n"); | |
1847 | return 0; | |
1848 | default: | |
1849 | ret = -EIO; | |
1850 | IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", | |
1851 | status); | |
1852 | break; | |
1853 | } | |
1854 | return ret; | |
1855 | } | |
1856 | ||
c5a719ee | 1857 | static void iwl_mvm_enable_aux_queue(struct iwl_mvm *mvm) |
8ca151b5 | 1858 | { |
4cf677fd EG |
1859 | unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? |
1860 | mvm->cfg->base_params->wd_timeout : | |
1861 | IWL_WATCHDOG_DISABLED; | |
8ca151b5 | 1862 | |
310181ec SS |
1863 | if (iwl_mvm_has_new_tx_api(mvm)) { |
1864 | int queue = iwl_mvm_tvqm_enable_txq(mvm, mvm->aux_queue, | |
1865 | mvm->aux_sta.sta_id, | |
1866 | IWL_MAX_TID_COUNT, | |
1867 | wdg_timeout); | |
1868 | mvm->aux_queue = queue; | |
1869 | } else if (iwl_mvm_is_dqa_supported(mvm)) { | |
28d0793e LK |
1870 | struct iwl_trans_txq_scd_cfg cfg = { |
1871 | .fifo = IWL_MVM_TX_FIFO_MCAST, | |
1872 | .sta_id = mvm->aux_sta.sta_id, | |
1873 | .tid = IWL_MAX_TID_COUNT, | |
1874 | .aggregate = false, | |
1875 | .frame_limit = IWL_FRAME_LIMIT, | |
1876 | }; | |
1877 | ||
1878 | iwl_mvm_enable_txq(mvm, mvm->aux_queue, mvm->aux_queue, 0, &cfg, | |
1879 | wdg_timeout); | |
c5a719ee SS |
1880 | } else { |
1881 | iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, | |
1882 | IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); | |
28d0793e | 1883 | } |
c5a719ee | 1884 | } |
28d0793e | 1885 | |
c5a719ee SS |
1886 | int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) |
1887 | { | |
1888 | int ret; | |
1889 | ||
1890 | lockdep_assert_held(&mvm->mutex); | |
8ca151b5 | 1891 | |
c5a719ee SS |
1892 | /* Allocate aux station and assign to it the aux queue */ |
1893 | ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), | |
ced19f26 SS |
1894 | NL80211_IFTYPE_UNSPECIFIED, |
1895 | IWL_STA_AUX_ACTIVITY); | |
8ca151b5 | 1896 | if (ret) |
c5a719ee SS |
1897 | return ret; |
1898 | ||
1899 | /* Map Aux queue to fifo - needs to happen before adding Aux station */ | |
1900 | if (!iwl_mvm_has_new_tx_api(mvm)) | |
1901 | iwl_mvm_enable_aux_queue(mvm); | |
1902 | ||
1903 | ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, | |
1904 | MAC_INDEX_AUX, 0); | |
1905 | if (ret) { | |
8ca151b5 | 1906 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); |
c5a719ee SS |
1907 | return ret; |
1908 | } | |
1909 | ||
1910 | /* | |
1911 | * For a000 firmware and on we cannot add queue to a station unknown | |
1912 | * to firmware so enable queue here - after the station was added | |
1913 | */ | |
1914 | if (iwl_mvm_has_new_tx_api(mvm)) | |
1915 | iwl_mvm_enable_aux_queue(mvm); | |
1916 | ||
1917 | return 0; | |
8ca151b5 JB |
1918 | } |
1919 | ||
0e39eb03 CRI |
1920 | int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
1921 | { | |
1922 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1923 | ||
1924 | lockdep_assert_held(&mvm->mutex); | |
1925 | return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, | |
1926 | mvmvif->id, 0); | |
1927 | } | |
1928 | ||
1929 | int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1930 | { | |
1931 | int ret; | |
1932 | ||
1933 | lockdep_assert_held(&mvm->mutex); | |
1934 | ||
1935 | ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); | |
1936 | if (ret) | |
1937 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
1938 | ||
1939 | return ret; | |
1940 | } | |
1941 | ||
1942 | void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) | |
1943 | { | |
1944 | iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); | |
1945 | } | |
1946 | ||
712b24ad JB |
1947 | void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) |
1948 | { | |
1949 | lockdep_assert_held(&mvm->mutex); | |
1950 | ||
1951 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
1952 | } | |
1953 | ||
8ca151b5 JB |
1954 | /* |
1955 | * Send the add station command for the vif's broadcast station. | |
1956 | * Assumes that the station was already allocated. | |
1957 | * | |
1958 | * @mvm: the mvm component | |
1959 | * @vif: the interface to which the broadcast station is added | |
1960 | * @bsta: the broadcast station to add. | |
1961 | */ | |
013290aa | 1962 | int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
1963 | { |
1964 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 1965 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
5023d966 | 1966 | static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
a4243402 | 1967 | const u8 *baddr = _baddr; |
7daa7624 | 1968 | int queue; |
df88c08d | 1969 | int ret; |
c5a719ee SS |
1970 | unsigned int wdg_timeout = |
1971 | iwl_mvm_get_wd_timeout(mvm, vif, false, false); | |
1972 | struct iwl_trans_txq_scd_cfg cfg = { | |
1973 | .fifo = IWL_MVM_TX_FIFO_VO, | |
1974 | .sta_id = mvmvif->bcast_sta.sta_id, | |
1975 | .tid = IWL_MAX_TID_COUNT, | |
1976 | .aggregate = false, | |
1977 | .frame_limit = IWL_FRAME_LIMIT, | |
1978 | }; | |
8ca151b5 JB |
1979 | |
1980 | lockdep_assert_held(&mvm->mutex); | |
1981 | ||
310181ec | 1982 | if (iwl_mvm_is_dqa_supported(mvm) && !iwl_mvm_has_new_tx_api(mvm)) { |
4d339989 LK |
1983 | if (vif->type == NL80211_IFTYPE_AP || |
1984 | vif->type == NL80211_IFTYPE_ADHOC) | |
49f71713 | 1985 | queue = mvm->probe_queue; |
df88c08d | 1986 | else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) |
49f71713 | 1987 | queue = mvm->p2p_dev_queue; |
df88c08d | 1988 | else if (WARN(1, "Missing required TXQ for adding bcast STA\n")) |
de24f638 LK |
1989 | return -EINVAL; |
1990 | ||
df88c08d | 1991 | bsta->tfd_queue_msk |= BIT(queue); |
c5a719ee | 1992 | |
310181ec SS |
1993 | iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, |
1994 | &cfg, wdg_timeout); | |
de24f638 LK |
1995 | } |
1996 | ||
5023d966 JB |
1997 | if (vif->type == NL80211_IFTYPE_ADHOC) |
1998 | baddr = vif->bss_conf.bssid; | |
1999 | ||
0ae98812 | 2000 | if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) |
8ca151b5 JB |
2001 | return -ENOSPC; |
2002 | ||
df88c08d LK |
2003 | ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, |
2004 | mvmvif->id, mvmvif->color); | |
2005 | if (ret) | |
2006 | return ret; | |
2007 | ||
2008 | /* | |
c5a719ee SS |
2009 | * For a000 firmware and on we cannot add queue to a station unknown |
2010 | * to firmware so enable queue here - after the station was added | |
df88c08d | 2011 | */ |
310181ec | 2012 | if (iwl_mvm_has_new_tx_api(mvm)) { |
7daa7624 JB |
2013 | queue = iwl_mvm_tvqm_enable_txq(mvm, vif->hw_queue[0], |
2014 | bsta->sta_id, | |
2015 | IWL_MAX_TID_COUNT, | |
2016 | wdg_timeout); | |
2017 | ||
310181ec SS |
2018 | if (vif->type == NL80211_IFTYPE_AP) |
2019 | mvm->probe_queue = queue; | |
2020 | else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) | |
2021 | mvm->p2p_dev_queue = queue; | |
310181ec | 2022 | } |
df88c08d LK |
2023 | |
2024 | return 0; | |
2025 | } | |
2026 | ||
2027 | static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, | |
2028 | struct ieee80211_vif *vif) | |
2029 | { | |
2030 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
d167e81a | 2031 | int queue; |
df88c08d LK |
2032 | |
2033 | lockdep_assert_held(&mvm->mutex); | |
2034 | ||
d49394a1 SS |
2035 | iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true, 0); |
2036 | ||
d167e81a MG |
2037 | switch (vif->type) { |
2038 | case NL80211_IFTYPE_AP: | |
2039 | case NL80211_IFTYPE_ADHOC: | |
2040 | queue = mvm->probe_queue; | |
2041 | break; | |
2042 | case NL80211_IFTYPE_P2P_DEVICE: | |
2043 | queue = mvm->p2p_dev_queue; | |
2044 | break; | |
2045 | default: | |
2046 | WARN(1, "Can't free bcast queue on vif type %d\n", | |
2047 | vif->type); | |
2048 | return; | |
df88c08d LK |
2049 | } |
2050 | ||
d167e81a MG |
2051 | iwl_mvm_disable_txq(mvm, queue, vif->hw_queue[0], IWL_MAX_TID_COUNT, 0); |
2052 | if (iwl_mvm_has_new_tx_api(mvm)) | |
2053 | return; | |
2054 | ||
2055 | WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); | |
2056 | mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); | |
8ca151b5 JB |
2057 | } |
2058 | ||
2059 | /* Send the FW a request to remove the station from it's internal data | |
2060 | * structures, but DO NOT remove the entry from the local data structures. */ | |
013290aa | 2061 | int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 | 2062 | { |
013290aa | 2063 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
2064 | int ret; |
2065 | ||
2066 | lockdep_assert_held(&mvm->mutex); | |
2067 | ||
df88c08d LK |
2068 | if (iwl_mvm_is_dqa_supported(mvm)) |
2069 | iwl_mvm_free_bcast_sta_queues(mvm, vif); | |
2070 | ||
013290aa | 2071 | ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); |
8ca151b5 JB |
2072 | if (ret) |
2073 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
2074 | return ret; | |
2075 | } | |
2076 | ||
013290aa JB |
2077 | int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
2078 | { | |
2079 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
de24f638 | 2080 | u32 qmask = 0; |
013290aa JB |
2081 | |
2082 | lockdep_assert_held(&mvm->mutex); | |
2083 | ||
df88c08d | 2084 | if (!iwl_mvm_is_dqa_supported(mvm)) { |
de24f638 | 2085 | qmask = iwl_mvm_mac_get_queues_mask(vif); |
013290aa | 2086 | |
de24f638 LK |
2087 | /* |
2088 | * The firmware defines the TFD queue mask to only be relevant | |
2089 | * for *unicast* queues, so the multicast (CAB) queue shouldn't | |
df88c08d LK |
2090 | * be included. This only happens in NL80211_IFTYPE_AP vif type, |
2091 | * so the next line will only have an effect there. | |
de24f638 | 2092 | */ |
013290aa | 2093 | qmask &= ~BIT(vif->cab_queue); |
de24f638 LK |
2094 | } |
2095 | ||
013290aa | 2096 | return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, |
ced19f26 SS |
2097 | ieee80211_vif_type_p2p(vif), |
2098 | IWL_STA_GENERAL_PURPOSE); | |
013290aa JB |
2099 | } |
2100 | ||
8ca151b5 JB |
2101 | /* Allocate a new station entry for the broadcast station to the given vif, |
2102 | * and send it to the FW. | |
2103 | * Note that each P2P mac should have its own broadcast station. | |
2104 | * | |
2105 | * @mvm: the mvm component | |
2106 | * @vif: the interface to which the broadcast station is added | |
2107 | * @bsta: the broadcast station to add. */ | |
013290aa | 2108 | int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
2109 | { |
2110 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 2111 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
8ca151b5 JB |
2112 | int ret; |
2113 | ||
2114 | lockdep_assert_held(&mvm->mutex); | |
2115 | ||
013290aa | 2116 | ret = iwl_mvm_alloc_bcast_sta(mvm, vif); |
8ca151b5 JB |
2117 | if (ret) |
2118 | return ret; | |
2119 | ||
013290aa | 2120 | ret = iwl_mvm_send_add_bcast_sta(mvm, vif); |
8ca151b5 JB |
2121 | |
2122 | if (ret) | |
2123 | iwl_mvm_dealloc_int_sta(mvm, bsta); | |
013290aa | 2124 | |
8ca151b5 JB |
2125 | return ret; |
2126 | } | |
2127 | ||
013290aa JB |
2128 | void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
2129 | { | |
2130 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
2131 | ||
2132 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
2133 | } | |
2134 | ||
8ca151b5 JB |
2135 | /* |
2136 | * Send the FW a request to remove the station from it's internal data | |
2137 | * structures, and in addition remove it from the local data structure. | |
2138 | */ | |
013290aa | 2139 | int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
2140 | { |
2141 | int ret; | |
2142 | ||
2143 | lockdep_assert_held(&mvm->mutex); | |
2144 | ||
013290aa JB |
2145 | ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); |
2146 | ||
2147 | iwl_mvm_dealloc_bcast_sta(mvm, vif); | |
8ca151b5 | 2148 | |
8ca151b5 JB |
2149 | return ret; |
2150 | } | |
2151 | ||
26d6c16b SS |
2152 | /* |
2153 | * Allocate a new station entry for the multicast station to the given vif, | |
2154 | * and send it to the FW. | |
2155 | * Note that each AP/GO mac should have its own multicast station. | |
2156 | * | |
2157 | * @mvm: the mvm component | |
2158 | * @vif: the interface to which the multicast station is added | |
2159 | */ | |
2160 | int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
2161 | { | |
2162 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
2163 | struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; | |
2164 | static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
2165 | const u8 *maddr = _maddr; | |
2166 | struct iwl_trans_txq_scd_cfg cfg = { | |
2167 | .fifo = IWL_MVM_TX_FIFO_MCAST, | |
2168 | .sta_id = msta->sta_id, | |
2169 | .tid = IWL_MAX_TID_COUNT, | |
2170 | .aggregate = false, | |
2171 | .frame_limit = IWL_FRAME_LIMIT, | |
2172 | }; | |
2173 | unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); | |
2174 | int ret; | |
2175 | ||
2176 | lockdep_assert_held(&mvm->mutex); | |
2177 | ||
2178 | if (!iwl_mvm_is_dqa_supported(mvm)) | |
2179 | return 0; | |
2180 | ||
ee48b722 LK |
2181 | if (WARN_ON(vif->type != NL80211_IFTYPE_AP && |
2182 | vif->type != NL80211_IFTYPE_ADHOC)) | |
26d6c16b SS |
2183 | return -ENOTSUPP; |
2184 | ||
ced19f26 SS |
2185 | /* |
2186 | * While in previous FWs we had to exclude cab queue from TFD queue | |
2187 | * mask, now it is needed as any other queue. | |
2188 | */ | |
2189 | if (!iwl_mvm_has_new_tx_api(mvm) && | |
2190 | fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { | |
2191 | iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, | |
2192 | &cfg, timeout); | |
2193 | msta->tfd_queue_msk |= BIT(vif->cab_queue); | |
2194 | } | |
26d6c16b SS |
2195 | ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, |
2196 | mvmvif->id, mvmvif->color); | |
2197 | if (ret) { | |
2198 | iwl_mvm_dealloc_int_sta(mvm, msta); | |
2199 | return ret; | |
2200 | } | |
2201 | ||
2202 | /* | |
2203 | * Enable cab queue after the ADD_STA command is sent. | |
2204 | * This is needed for a000 firmware which won't accept SCD_QUEUE_CFG | |
ced19f26 SS |
2205 | * command with unknown station id, and for FW that doesn't support |
2206 | * station API since the cab queue is not included in the | |
2207 | * tfd_queue_mask. | |
26d6c16b | 2208 | */ |
310181ec SS |
2209 | if (iwl_mvm_has_new_tx_api(mvm)) { |
2210 | int queue = iwl_mvm_tvqm_enable_txq(mvm, vif->cab_queue, | |
2211 | msta->sta_id, | |
2212 | IWL_MAX_TID_COUNT, | |
2213 | timeout); | |
e2af3fab | 2214 | mvmvif->cab_queue = queue; |
ced19f26 SS |
2215 | } else if (!fw_has_api(&mvm->fw->ucode_capa, |
2216 | IWL_UCODE_TLV_API_STA_TYPE)) { | |
ee48b722 LK |
2217 | /* |
2218 | * In IBSS, ieee80211_check_queues() sets the cab_queue to be | |
2219 | * invalid, so make sure we use the queue we want. | |
2220 | * Note that this is done here as we want to avoid making DQA | |
2221 | * changes in mac80211 layer. | |
2222 | */ | |
2223 | if (vif->type == NL80211_IFTYPE_ADHOC) { | |
2224 | vif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; | |
2225 | mvmvif->cab_queue = vif->cab_queue; | |
2226 | } | |
310181ec SS |
2227 | iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, |
2228 | &cfg, timeout); | |
2229 | } | |
26d6c16b SS |
2230 | |
2231 | return 0; | |
2232 | } | |
2233 | ||
2234 | /* | |
2235 | * Send the FW a request to remove the station from it's internal data | |
2236 | * structures, and in addition remove it from the local data structure. | |
2237 | */ | |
2238 | int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
2239 | { | |
2240 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
2241 | int ret; | |
2242 | ||
2243 | lockdep_assert_held(&mvm->mutex); | |
2244 | ||
2245 | if (!iwl_mvm_is_dqa_supported(mvm)) | |
2246 | return 0; | |
2247 | ||
d49394a1 SS |
2248 | iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true, 0); |
2249 | ||
e2af3fab | 2250 | iwl_mvm_disable_txq(mvm, mvmvif->cab_queue, vif->cab_queue, |
26d6c16b SS |
2251 | IWL_MAX_TID_COUNT, 0); |
2252 | ||
2253 | ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); | |
2254 | if (ret) | |
2255 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
2256 | ||
2257 | return ret; | |
2258 | } | |
2259 | ||
113a0447 EG |
2260 | #define IWL_MAX_RX_BA_SESSIONS 16 |
2261 | ||
b915c101 | 2262 | static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) |
10b2b201 | 2263 | { |
b915c101 SS |
2264 | struct iwl_mvm_delba_notif notif = { |
2265 | .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA, | |
2266 | .metadata.sync = 1, | |
2267 | .delba.baid = baid, | |
10b2b201 | 2268 | }; |
b915c101 SS |
2269 | iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); |
2270 | }; | |
10b2b201 | 2271 | |
b915c101 SS |
2272 | static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, |
2273 | struct iwl_mvm_baid_data *data) | |
2274 | { | |
2275 | int i; | |
2276 | ||
2277 | iwl_mvm_sync_rxq_del_ba(mvm, data->baid); | |
2278 | ||
2279 | for (i = 0; i < mvm->trans->num_rx_queues; i++) { | |
2280 | int j; | |
2281 | struct iwl_mvm_reorder_buffer *reorder_buf = | |
2282 | &data->reorder_buf[i]; | |
2283 | ||
0690405f SS |
2284 | spin_lock_bh(&reorder_buf->lock); |
2285 | if (likely(!reorder_buf->num_stored)) { | |
2286 | spin_unlock_bh(&reorder_buf->lock); | |
b915c101 | 2287 | continue; |
0690405f | 2288 | } |
b915c101 SS |
2289 | |
2290 | /* | |
2291 | * This shouldn't happen in regular DELBA since the internal | |
2292 | * delBA notification should trigger a release of all frames in | |
2293 | * the reorder buffer. | |
2294 | */ | |
2295 | WARN_ON(1); | |
2296 | ||
2297 | for (j = 0; j < reorder_buf->buf_size; j++) | |
2298 | __skb_queue_purge(&reorder_buf->entries[j]); | |
0690405f SS |
2299 | /* |
2300 | * Prevent timer re-arm. This prevents a very far fetched case | |
2301 | * where we timed out on the notification. There may be prior | |
2302 | * RX frames pending in the RX queue before the notification | |
2303 | * that might get processed between now and the actual deletion | |
2304 | * and we would re-arm the timer although we are deleting the | |
2305 | * reorder buffer. | |
2306 | */ | |
2307 | reorder_buf->removed = true; | |
2308 | spin_unlock_bh(&reorder_buf->lock); | |
2309 | del_timer_sync(&reorder_buf->reorder_timer); | |
b915c101 SS |
2310 | } |
2311 | } | |
2312 | ||
2313 | static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, | |
2314 | u32 sta_id, | |
2315 | struct iwl_mvm_baid_data *data, | |
2316 | u16 ssn, u8 buf_size) | |
2317 | { | |
2318 | int i; | |
2319 | ||
2320 | for (i = 0; i < mvm->trans->num_rx_queues; i++) { | |
2321 | struct iwl_mvm_reorder_buffer *reorder_buf = | |
2322 | &data->reorder_buf[i]; | |
2323 | int j; | |
2324 | ||
2325 | reorder_buf->num_stored = 0; | |
2326 | reorder_buf->head_sn = ssn; | |
2327 | reorder_buf->buf_size = buf_size; | |
0690405f SS |
2328 | /* rx reorder timer */ |
2329 | reorder_buf->reorder_timer.function = | |
2330 | iwl_mvm_reorder_timer_expired; | |
2331 | reorder_buf->reorder_timer.data = (unsigned long)reorder_buf; | |
2332 | init_timer(&reorder_buf->reorder_timer); | |
2333 | spin_lock_init(&reorder_buf->lock); | |
2334 | reorder_buf->mvm = mvm; | |
b915c101 SS |
2335 | reorder_buf->queue = i; |
2336 | reorder_buf->sta_id = sta_id; | |
5d43eab6 | 2337 | reorder_buf->valid = false; |
b915c101 SS |
2338 | for (j = 0; j < reorder_buf->buf_size; j++) |
2339 | __skb_queue_head_init(&reorder_buf->entries[j]); | |
2340 | } | |
10b2b201 SS |
2341 | } |
2342 | ||
8ca151b5 | 2343 | int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
10b2b201 | 2344 | int tid, u16 ssn, bool start, u8 buf_size, u16 timeout) |
8ca151b5 | 2345 | { |
9d8ce6af | 2346 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 2347 | struct iwl_mvm_add_sta_cmd cmd = {}; |
10b2b201 | 2348 | struct iwl_mvm_baid_data *baid_data = NULL; |
8ca151b5 JB |
2349 | int ret; |
2350 | u32 status; | |
2351 | ||
2352 | lockdep_assert_held(&mvm->mutex); | |
2353 | ||
113a0447 EG |
2354 | if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { |
2355 | IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); | |
2356 | return -ENOSPC; | |
2357 | } | |
2358 | ||
10b2b201 SS |
2359 | if (iwl_mvm_has_new_rx_api(mvm) && start) { |
2360 | /* | |
2361 | * Allocate here so if allocation fails we can bail out early | |
2362 | * before starting the BA session in the firmware | |
2363 | */ | |
b915c101 SS |
2364 | baid_data = kzalloc(sizeof(*baid_data) + |
2365 | mvm->trans->num_rx_queues * | |
2366 | sizeof(baid_data->reorder_buf[0]), | |
2367 | GFP_KERNEL); | |
10b2b201 SS |
2368 | if (!baid_data) |
2369 | return -ENOMEM; | |
2370 | } | |
2371 | ||
8ca151b5 JB |
2372 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
2373 | cmd.sta_id = mvm_sta->sta_id; | |
2374 | cmd.add_modify = STA_MODE_MODIFY; | |
93a42667 EG |
2375 | if (start) { |
2376 | cmd.add_immediate_ba_tid = (u8) tid; | |
2377 | cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
854c5705 | 2378 | cmd.rx_ba_window = cpu_to_le16((u16)buf_size); |
93a42667 EG |
2379 | } else { |
2380 | cmd.remove_immediate_ba_tid = (u8) tid; | |
2381 | } | |
8ca151b5 JB |
2382 | cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : |
2383 | STA_MODIFY_REMOVE_BA_TID; | |
2384 | ||
2385 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
2386 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
2387 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 2388 | &cmd, &status); |
8ca151b5 | 2389 | if (ret) |
10b2b201 | 2390 | goto out_free; |
8ca151b5 | 2391 | |
837c4da9 | 2392 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 | 2393 | case ADD_STA_SUCCESS: |
35263a03 SS |
2394 | IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", |
2395 | start ? "start" : "stopp"); | |
8ca151b5 JB |
2396 | break; |
2397 | case ADD_STA_IMMEDIATE_BA_FAILURE: | |
2398 | IWL_WARN(mvm, "RX BA Session refused by fw\n"); | |
2399 | ret = -ENOSPC; | |
2400 | break; | |
2401 | default: | |
2402 | ret = -EIO; | |
2403 | IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", | |
2404 | start ? "start" : "stopp", status); | |
2405 | break; | |
2406 | } | |
2407 | ||
10b2b201 SS |
2408 | if (ret) |
2409 | goto out_free; | |
2410 | ||
2411 | if (start) { | |
2412 | u8 baid; | |
2413 | ||
2414 | mvm->rx_ba_sessions++; | |
2415 | ||
2416 | if (!iwl_mvm_has_new_rx_api(mvm)) | |
2417 | return 0; | |
2418 | ||
2419 | if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { | |
2420 | ret = -EINVAL; | |
2421 | goto out_free; | |
2422 | } | |
2423 | baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> | |
2424 | IWL_ADD_STA_BAID_SHIFT); | |
2425 | baid_data->baid = baid; | |
2426 | baid_data->timeout = timeout; | |
2427 | baid_data->last_rx = jiffies; | |
72c240fe WY |
2428 | setup_timer(&baid_data->session_timer, |
2429 | iwl_mvm_rx_agg_session_expired, | |
2430 | (unsigned long)&mvm->baid_map[baid]); | |
10b2b201 SS |
2431 | baid_data->mvm = mvm; |
2432 | baid_data->tid = tid; | |
2433 | baid_data->sta_id = mvm_sta->sta_id; | |
2434 | ||
2435 | mvm_sta->tid_to_baid[tid] = baid; | |
2436 | if (timeout) | |
2437 | mod_timer(&baid_data->session_timer, | |
2438 | TU_TO_EXP_TIME(timeout * 2)); | |
2439 | ||
b915c101 SS |
2440 | iwl_mvm_init_reorder_buffer(mvm, mvm_sta->sta_id, |
2441 | baid_data, ssn, buf_size); | |
10b2b201 SS |
2442 | /* |
2443 | * protect the BA data with RCU to cover a case where our | |
2444 | * internal RX sync mechanism will timeout (not that it's | |
2445 | * supposed to happen) and we will free the session data while | |
2446 | * RX is being processed in parallel | |
2447 | */ | |
35263a03 SS |
2448 | IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", |
2449 | mvm_sta->sta_id, tid, baid); | |
10b2b201 SS |
2450 | WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); |
2451 | rcu_assign_pointer(mvm->baid_map[baid], baid_data); | |
60dec523 | 2452 | } else { |
10b2b201 SS |
2453 | u8 baid = mvm_sta->tid_to_baid[tid]; |
2454 | ||
60dec523 SS |
2455 | if (mvm->rx_ba_sessions > 0) |
2456 | /* check that restart flow didn't zero the counter */ | |
2457 | mvm->rx_ba_sessions--; | |
10b2b201 SS |
2458 | if (!iwl_mvm_has_new_rx_api(mvm)) |
2459 | return 0; | |
2460 | ||
2461 | if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) | |
2462 | return -EINVAL; | |
2463 | ||
2464 | baid_data = rcu_access_pointer(mvm->baid_map[baid]); | |
2465 | if (WARN_ON(!baid_data)) | |
2466 | return -EINVAL; | |
2467 | ||
2468 | /* synchronize all rx queues so we can safely delete */ | |
b915c101 | 2469 | iwl_mvm_free_reorder(mvm, baid_data); |
10b2b201 | 2470 | del_timer_sync(&baid_data->session_timer); |
10b2b201 SS |
2471 | RCU_INIT_POINTER(mvm->baid_map[baid], NULL); |
2472 | kfree_rcu(baid_data, rcu_head); | |
35263a03 | 2473 | IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); |
113a0447 | 2474 | } |
10b2b201 | 2475 | return 0; |
113a0447 | 2476 | |
10b2b201 SS |
2477 | out_free: |
2478 | kfree(baid_data); | |
8ca151b5 JB |
2479 | return ret; |
2480 | } | |
2481 | ||
9794c64f LK |
2482 | int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
2483 | int tid, u8 queue, bool start) | |
8ca151b5 | 2484 | { |
9d8ce6af | 2485 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 2486 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
2487 | int ret; |
2488 | u32 status; | |
2489 | ||
2490 | lockdep_assert_held(&mvm->mutex); | |
2491 | ||
2492 | if (start) { | |
2493 | mvm_sta->tfd_queue_msk |= BIT(queue); | |
2494 | mvm_sta->tid_disable_agg &= ~BIT(tid); | |
2495 | } else { | |
cf961e16 LK |
2496 | /* In DQA-mode the queue isn't removed on agg termination */ |
2497 | if (!iwl_mvm_is_dqa_supported(mvm)) | |
2498 | mvm_sta->tfd_queue_msk &= ~BIT(queue); | |
8ca151b5 JB |
2499 | mvm_sta->tid_disable_agg |= BIT(tid); |
2500 | } | |
2501 | ||
2502 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); | |
2503 | cmd.sta_id = mvm_sta->sta_id; | |
2504 | cmd.add_modify = STA_MODE_MODIFY; | |
bb49701b SS |
2505 | if (!iwl_mvm_has_new_tx_api(mvm)) |
2506 | cmd.modify_mask = STA_MODIFY_QUEUES; | |
2507 | cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; | |
8ca151b5 JB |
2508 | cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); |
2509 | cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); | |
2510 | ||
2511 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
2512 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
2513 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 2514 | &cmd, &status); |
8ca151b5 JB |
2515 | if (ret) |
2516 | return ret; | |
2517 | ||
837c4da9 | 2518 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
2519 | case ADD_STA_SUCCESS: |
2520 | break; | |
2521 | default: | |
2522 | ret = -EIO; | |
2523 | IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", | |
2524 | start ? "start" : "stopp", status); | |
2525 | break; | |
2526 | } | |
2527 | ||
2528 | return ret; | |
2529 | } | |
2530 | ||
b797e3fb | 2531 | const u8 tid_to_mac80211_ac[] = { |
8ca151b5 JB |
2532 | IEEE80211_AC_BE, |
2533 | IEEE80211_AC_BK, | |
2534 | IEEE80211_AC_BK, | |
2535 | IEEE80211_AC_BE, | |
2536 | IEEE80211_AC_VI, | |
2537 | IEEE80211_AC_VI, | |
2538 | IEEE80211_AC_VO, | |
2539 | IEEE80211_AC_VO, | |
9794c64f | 2540 | IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ |
8ca151b5 JB |
2541 | }; |
2542 | ||
3e56eadf JB |
2543 | static const u8 tid_to_ucode_ac[] = { |
2544 | AC_BE, | |
2545 | AC_BK, | |
2546 | AC_BK, | |
2547 | AC_BE, | |
2548 | AC_VI, | |
2549 | AC_VI, | |
2550 | AC_VO, | |
2551 | AC_VO, | |
2552 | }; | |
2553 | ||
8ca151b5 JB |
2554 | int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
2555 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) | |
2556 | { | |
5b577a90 | 2557 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 2558 | struct iwl_mvm_tid_data *tid_data; |
dd32162d | 2559 | u16 normalized_ssn; |
8ca151b5 | 2560 | int txq_id; |
4ecafae9 | 2561 | int ret; |
8ca151b5 JB |
2562 | |
2563 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
2564 | return -EINVAL; | |
2565 | ||
2566 | if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { | |
2567 | IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", | |
2568 | mvmsta->tid_data[tid].state); | |
2569 | return -ENXIO; | |
2570 | } | |
2571 | ||
2572 | lockdep_assert_held(&mvm->mutex); | |
2573 | ||
b2492501 AN |
2574 | spin_lock_bh(&mvmsta->lock); |
2575 | ||
2576 | /* possible race condition - we entered D0i3 while starting agg */ | |
2577 | if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { | |
2578 | spin_unlock_bh(&mvmsta->lock); | |
2579 | IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); | |
2580 | return -EIO; | |
2581 | } | |
2582 | ||
9f9af3d7 | 2583 | spin_lock(&mvm->queue_info_lock); |
4ecafae9 | 2584 | |
cf961e16 LK |
2585 | /* |
2586 | * Note the possible cases: | |
2587 | * 1. In DQA mode with an enabled TXQ - TXQ needs to become agg'ed | |
2588 | * 2. Non-DQA mode: the TXQ hasn't yet been enabled, so find a free | |
2589 | * one and mark it as reserved | |
2590 | * 3. In DQA mode, but no traffic yet on this TID: same treatment as in | |
2591 | * non-DQA mode, since the TXQ hasn't yet been allocated | |
34e10860 SS |
2592 | * Don't support case 3 for new TX path as it is not expected to happen |
2593 | * and aggregation will be offloaded soon anyway | |
cf961e16 LK |
2594 | */ |
2595 | txq_id = mvmsta->tid_data[tid].txq_id; | |
34e10860 SS |
2596 | if (iwl_mvm_has_new_tx_api(mvm)) { |
2597 | if (txq_id == IWL_MVM_INVALID_QUEUE) { | |
2598 | ret = -ENXIO; | |
2599 | goto release_locks; | |
2600 | } | |
2601 | } else if (iwl_mvm_is_dqa_supported(mvm) && | |
2602 | unlikely(mvm->queue_info[txq_id].status == | |
2603 | IWL_MVM_QUEUE_SHARED)) { | |
9f9af3d7 LK |
2604 | ret = -ENXIO; |
2605 | IWL_DEBUG_TX_QUEUES(mvm, | |
2606 | "Can't start tid %d agg on shared queue!\n", | |
2607 | tid); | |
2608 | goto release_locks; | |
2609 | } else if (!iwl_mvm_is_dqa_supported(mvm) || | |
cf961e16 | 2610 | mvm->queue_info[txq_id].status != IWL_MVM_QUEUE_READY) { |
9794c64f LK |
2611 | txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, |
2612 | mvm->first_agg_queue, | |
cf961e16 LK |
2613 | mvm->last_agg_queue); |
2614 | if (txq_id < 0) { | |
2615 | ret = txq_id; | |
cf961e16 LK |
2616 | IWL_ERR(mvm, "Failed to allocate agg queue\n"); |
2617 | goto release_locks; | |
2618 | } | |
01796ff2 SS |
2619 | /* |
2620 | * TXQ shouldn't be in inactive mode for non-DQA, so getting | |
2621 | * an inactive queue from iwl_mvm_find_free_queue() is | |
2622 | * certainly a bug | |
2623 | */ | |
2624 | WARN_ON(mvm->queue_info[txq_id].status == | |
2625 | IWL_MVM_QUEUE_INACTIVE); | |
cf961e16 LK |
2626 | |
2627 | /* TXQ hasn't yet been enabled, so mark it only as reserved */ | |
2628 | mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; | |
4ecafae9 | 2629 | } |
9f9af3d7 LK |
2630 | |
2631 | spin_unlock(&mvm->queue_info_lock); | |
8ca151b5 | 2632 | |
cf961e16 LK |
2633 | IWL_DEBUG_TX_QUEUES(mvm, |
2634 | "AGG for tid %d will be on queue #%d\n", | |
2635 | tid, txq_id); | |
2636 | ||
8ca151b5 | 2637 | tid_data = &mvmsta->tid_data[tid]; |
9a886586 | 2638 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
2639 | tid_data->txq_id = txq_id; |
2640 | *ssn = tid_data->ssn; | |
2641 | ||
2642 | IWL_DEBUG_TX_QUEUES(mvm, | |
2643 | "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", | |
2644 | mvmsta->sta_id, tid, txq_id, tid_data->ssn, | |
2645 | tid_data->next_reclaimed); | |
2646 | ||
dd32162d LK |
2647 | /* |
2648 | * In A000 HW, the next_reclaimed index is only 8 bit, so we'll need | |
2649 | * to align the wrap around of ssn so we compare relevant values. | |
2650 | */ | |
2651 | normalized_ssn = tid_data->ssn; | |
2652 | if (mvm->trans->cfg->gen2) | |
2653 | normalized_ssn &= 0xff; | |
2654 | ||
2655 | if (normalized_ssn == tid_data->next_reclaimed) { | |
8ca151b5 JB |
2656 | tid_data->state = IWL_AGG_STARTING; |
2657 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
2658 | } else { | |
2659 | tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
2660 | } | |
2661 | ||
4ecafae9 | 2662 | ret = 0; |
9f9af3d7 | 2663 | goto out; |
4ecafae9 LK |
2664 | |
2665 | release_locks: | |
9f9af3d7 LK |
2666 | spin_unlock(&mvm->queue_info_lock); |
2667 | out: | |
8ca151b5 JB |
2668 | spin_unlock_bh(&mvmsta->lock); |
2669 | ||
4ecafae9 | 2670 | return ret; |
8ca151b5 JB |
2671 | } |
2672 | ||
2673 | int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
bb81bb68 EG |
2674 | struct ieee80211_sta *sta, u16 tid, u8 buf_size, |
2675 | bool amsdu) | |
8ca151b5 | 2676 | { |
5b577a90 | 2677 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 2678 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
5d42e7b2 EG |
2679 | unsigned int wdg_timeout = |
2680 | iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); | |
eea76c36 | 2681 | int queue, ret; |
cf961e16 | 2682 | bool alloc_queue = true; |
9f9af3d7 | 2683 | enum iwl_mvm_queue_status queue_status; |
8ca151b5 JB |
2684 | u16 ssn; |
2685 | ||
eea76c36 EG |
2686 | struct iwl_trans_txq_scd_cfg cfg = { |
2687 | .sta_id = mvmsta->sta_id, | |
2688 | .tid = tid, | |
2689 | .frame_limit = buf_size, | |
2690 | .aggregate = true, | |
2691 | }; | |
2692 | ||
efed6640 ES |
2693 | BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) |
2694 | != IWL_MAX_TID_COUNT); | |
2695 | ||
a58bb468 LK |
2696 | if (!mvm->trans->cfg->gen2) |
2697 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); | |
2698 | else | |
2699 | buf_size = min_t(int, buf_size, | |
2700 | LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF); | |
8ca151b5 JB |
2701 | |
2702 | spin_lock_bh(&mvmsta->lock); | |
2703 | ssn = tid_data->ssn; | |
2704 | queue = tid_data->txq_id; | |
2705 | tid_data->state = IWL_AGG_ON; | |
efed6640 | 2706 | mvmsta->agg_tids |= BIT(tid); |
8ca151b5 | 2707 | tid_data->ssn = 0xffff; |
bb81bb68 | 2708 | tid_data->amsdu_in_ampdu_allowed = amsdu; |
8ca151b5 JB |
2709 | spin_unlock_bh(&mvmsta->lock); |
2710 | ||
34e10860 SS |
2711 | if (iwl_mvm_has_new_tx_api(mvm)) { |
2712 | /* | |
2713 | * If no queue iwl_mvm_sta_tx_agg_start() would have failed so | |
2714 | * no need to check queue's status | |
2715 | */ | |
2716 | if (buf_size < mvmsta->max_agg_bufsize) | |
2717 | return -ENOTSUPP; | |
2718 | ||
2719 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); | |
2720 | if (ret) | |
2721 | return -EIO; | |
2722 | goto out; | |
2723 | } | |
2724 | ||
eea76c36 | 2725 | cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; |
8ca151b5 | 2726 | |
9f9af3d7 LK |
2727 | spin_lock_bh(&mvm->queue_info_lock); |
2728 | queue_status = mvm->queue_info[queue].status; | |
2729 | spin_unlock_bh(&mvm->queue_info_lock); | |
2730 | ||
cf961e16 LK |
2731 | /* In DQA mode, the existing queue might need to be reconfigured */ |
2732 | if (iwl_mvm_is_dqa_supported(mvm)) { | |
cf961e16 LK |
2733 | /* Maybe there is no need to even alloc a queue... */ |
2734 | if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) | |
2735 | alloc_queue = false; | |
cf961e16 LK |
2736 | |
2737 | /* | |
2738 | * Only reconfig the SCD for the queue if the window size has | |
2739 | * changed from current (become smaller) | |
2740 | */ | |
2741 | if (!alloc_queue && buf_size < mvmsta->max_agg_bufsize) { | |
2742 | /* | |
2743 | * If reconfiguring an existing queue, it first must be | |
2744 | * drained | |
2745 | */ | |
a1a57877 SS |
2746 | ret = iwl_trans_wait_tx_queues_empty(mvm->trans, |
2747 | BIT(queue)); | |
cf961e16 LK |
2748 | if (ret) { |
2749 | IWL_ERR(mvm, | |
2750 | "Error draining queue before reconfig\n"); | |
2751 | return ret; | |
2752 | } | |
2753 | ||
2754 | ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, | |
2755 | mvmsta->sta_id, tid, | |
2756 | buf_size, ssn); | |
2757 | if (ret) { | |
2758 | IWL_ERR(mvm, | |
2759 | "Error reconfiguring TXQ #%d\n", queue); | |
2760 | return ret; | |
2761 | } | |
2762 | } | |
2763 | } | |
2764 | ||
2765 | if (alloc_queue) | |
2766 | iwl_mvm_enable_txq(mvm, queue, | |
2767 | vif->hw_queue[tid_to_mac80211_ac[tid]], ssn, | |
2768 | &cfg, wdg_timeout); | |
fa7878e7 | 2769 | |
9f9af3d7 LK |
2770 | /* Send ADD_STA command to enable aggs only if the queue isn't shared */ |
2771 | if (queue_status != IWL_MVM_QUEUE_SHARED) { | |
2772 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); | |
2773 | if (ret) | |
2774 | return -EIO; | |
2775 | } | |
8ca151b5 | 2776 | |
4ecafae9 LK |
2777 | /* No need to mark as reserved */ |
2778 | spin_lock_bh(&mvm->queue_info_lock); | |
cf961e16 | 2779 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; |
4ecafae9 LK |
2780 | spin_unlock_bh(&mvm->queue_info_lock); |
2781 | ||
34e10860 | 2782 | out: |
8ca151b5 JB |
2783 | /* |
2784 | * Even though in theory the peer could have different | |
2785 | * aggregation reorder buffer sizes for different sessions, | |
2786 | * our ucode doesn't allow for that and has a global limit | |
2787 | * for each station. Therefore, use the minimum of all the | |
2788 | * aggregation sessions and our default value. | |
2789 | */ | |
2790 | mvmsta->max_agg_bufsize = | |
2791 | min(mvmsta->max_agg_bufsize, buf_size); | |
2792 | mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; | |
2793 | ||
9ee718aa EL |
2794 | IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", |
2795 | sta->addr, tid); | |
2796 | ||
9e680946 | 2797 | return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); |
8ca151b5 JB |
2798 | } |
2799 | ||
34e10860 SS |
2800 | static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, |
2801 | struct iwl_mvm_sta *mvmsta, | |
2802 | u16 txq_id) | |
2803 | { | |
2804 | if (iwl_mvm_has_new_tx_api(mvm)) | |
2805 | return; | |
2806 | ||
2807 | spin_lock_bh(&mvm->queue_info_lock); | |
2808 | /* | |
2809 | * The TXQ is marked as reserved only if no traffic came through yet | |
2810 | * This means no traffic has been sent on this TID (agg'd or not), so | |
2811 | * we no longer have use for the queue. Since it hasn't even been | |
2812 | * allocated through iwl_mvm_enable_txq, so we can just mark it back as | |
2813 | * free. | |
2814 | */ | |
2815 | if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) | |
2816 | mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; | |
2817 | ||
2818 | spin_unlock_bh(&mvm->queue_info_lock); | |
2819 | } | |
2820 | ||
8ca151b5 JB |
2821 | int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
2822 | struct ieee80211_sta *sta, u16 tid) | |
2823 | { | |
5b577a90 | 2824 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
2825 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
2826 | u16 txq_id; | |
2827 | int err; | |
2828 | ||
f9aa8dd3 EG |
2829 | /* |
2830 | * If mac80211 is cleaning its state, then say that we finished since | |
2831 | * our state has been cleared anyway. | |
2832 | */ | |
2833 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
2834 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
2835 | return 0; | |
2836 | } | |
2837 | ||
8ca151b5 JB |
2838 | spin_lock_bh(&mvmsta->lock); |
2839 | ||
2840 | txq_id = tid_data->txq_id; | |
2841 | ||
2842 | IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", | |
2843 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
2844 | ||
efed6640 ES |
2845 | mvmsta->agg_tids &= ~BIT(tid); |
2846 | ||
34e10860 | 2847 | iwl_mvm_unreserve_agg_queue(mvm, mvmsta, txq_id); |
4ecafae9 | 2848 | |
8ca151b5 JB |
2849 | switch (tid_data->state) { |
2850 | case IWL_AGG_ON: | |
9a886586 | 2851 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
2852 | |
2853 | IWL_DEBUG_TX_QUEUES(mvm, | |
2854 | "ssn = %d, next_recl = %d\n", | |
2855 | tid_data->ssn, tid_data->next_reclaimed); | |
2856 | ||
664e968b LK |
2857 | /* |
2858 | * There are still packets for this RA / TID in the HW. | |
2859 | * Not relevant for DQA mode, since there is no need to disable | |
2860 | * the queue. | |
2861 | */ | |
2862 | if (!iwl_mvm_is_dqa_supported(mvm) && | |
2863 | tid_data->ssn != tid_data->next_reclaimed) { | |
8ca151b5 JB |
2864 | tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; |
2865 | err = 0; | |
2866 | break; | |
2867 | } | |
2868 | ||
2869 | tid_data->ssn = 0xffff; | |
f7f89e7b | 2870 | tid_data->state = IWL_AGG_OFF; |
f7f89e7b JB |
2871 | spin_unlock_bh(&mvmsta->lock); |
2872 | ||
2873 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
2874 | ||
2875 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); | |
2876 | ||
cf961e16 LK |
2877 | if (!iwl_mvm_is_dqa_supported(mvm)) { |
2878 | int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; | |
2879 | ||
2880 | iwl_mvm_disable_txq(mvm, txq_id, mac_queue, tid, 0); | |
2881 | } | |
f7f89e7b | 2882 | return 0; |
8ca151b5 JB |
2883 | case IWL_AGG_STARTING: |
2884 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
2885 | /* | |
2886 | * The agg session has been stopped before it was set up. This | |
2887 | * can happen when the AddBA timer times out for example. | |
2888 | */ | |
2889 | ||
2890 | /* No barriers since we are under mutex */ | |
2891 | lockdep_assert_held(&mvm->mutex); | |
8ca151b5 JB |
2892 | |
2893 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
2894 | tid_data->state = IWL_AGG_OFF; | |
2895 | err = 0; | |
2896 | break; | |
2897 | default: | |
2898 | IWL_ERR(mvm, | |
2899 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
2900 | mvmsta->sta_id, tid, tid_data->state); | |
2901 | IWL_ERR(mvm, | |
2902 | "\ttid_data->txq_id = %d\n", tid_data->txq_id); | |
2903 | err = -EINVAL; | |
2904 | } | |
2905 | ||
2906 | spin_unlock_bh(&mvmsta->lock); | |
2907 | ||
2908 | return err; | |
2909 | } | |
2910 | ||
e3d9e7ce EG |
2911 | int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
2912 | struct ieee80211_sta *sta, u16 tid) | |
2913 | { | |
5b577a90 | 2914 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
e3d9e7ce EG |
2915 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
2916 | u16 txq_id; | |
b6658ff8 | 2917 | enum iwl_mvm_agg_state old_state; |
e3d9e7ce EG |
2918 | |
2919 | /* | |
2920 | * First set the agg state to OFF to avoid calling | |
2921 | * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. | |
2922 | */ | |
2923 | spin_lock_bh(&mvmsta->lock); | |
2924 | txq_id = tid_data->txq_id; | |
2925 | IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", | |
2926 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
b6658ff8 | 2927 | old_state = tid_data->state; |
e3d9e7ce | 2928 | tid_data->state = IWL_AGG_OFF; |
efed6640 | 2929 | mvmsta->agg_tids &= ~BIT(tid); |
e3d9e7ce EG |
2930 | spin_unlock_bh(&mvmsta->lock); |
2931 | ||
34e10860 | 2932 | iwl_mvm_unreserve_agg_queue(mvm, mvmsta, txq_id); |
4ecafae9 | 2933 | |
b6658ff8 | 2934 | if (old_state >= IWL_AGG_ON) { |
fe92e32a | 2935 | iwl_mvm_drain_sta(mvm, mvmsta, true); |
d6d517b7 | 2936 | |
d167e81a MG |
2937 | if (iwl_mvm_has_new_tx_api(mvm)) { |
2938 | if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, | |
2939 | BIT(tid), 0)) | |
2940 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); | |
d6d517b7 | 2941 | iwl_trans_wait_txq_empty(mvm->trans, txq_id); |
d167e81a MG |
2942 | } else { |
2943 | if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) | |
2944 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); | |
d6d517b7 | 2945 | iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); |
d167e81a | 2946 | } |
d6d517b7 | 2947 | |
fe92e32a | 2948 | iwl_mvm_drain_sta(mvm, mvmsta, false); |
b6658ff8 | 2949 | |
f7f89e7b JB |
2950 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); |
2951 | ||
cf961e16 LK |
2952 | if (!iwl_mvm_is_dqa_supported(mvm)) { |
2953 | int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; | |
2954 | ||
2955 | iwl_mvm_disable_txq(mvm, tid_data->txq_id, mac_queue, | |
2956 | tid, 0); | |
2957 | } | |
b6658ff8 | 2958 | } |
e3d9e7ce | 2959 | |
e3d9e7ce EG |
2960 | return 0; |
2961 | } | |
2962 | ||
8ca151b5 JB |
2963 | static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) |
2964 | { | |
2dc2a15e | 2965 | int i, max = -1, max_offs = -1; |
8ca151b5 JB |
2966 | |
2967 | lockdep_assert_held(&mvm->mutex); | |
2968 | ||
2dc2a15e JB |
2969 | /* Pick the unused key offset with the highest 'deleted' |
2970 | * counter. Every time a key is deleted, all the counters | |
2971 | * are incremented and the one that was just deleted is | |
2972 | * reset to zero. Thus, the highest counter is the one | |
2973 | * that was deleted longest ago. Pick that one. | |
2974 | */ | |
2975 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
2976 | if (test_bit(i, mvm->fw_key_table)) | |
2977 | continue; | |
2978 | if (mvm->fw_key_deleted[i] > max) { | |
2979 | max = mvm->fw_key_deleted[i]; | |
2980 | max_offs = i; | |
2981 | } | |
2982 | } | |
8ca151b5 | 2983 | |
2dc2a15e | 2984 | if (max_offs < 0) |
8ca151b5 JB |
2985 | return STA_KEY_IDX_INVALID; |
2986 | ||
2dc2a15e | 2987 | return max_offs; |
8ca151b5 JB |
2988 | } |
2989 | ||
5f7a1847 JB |
2990 | static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, |
2991 | struct ieee80211_vif *vif, | |
2992 | struct ieee80211_sta *sta) | |
8ca151b5 | 2993 | { |
5b530e95 | 2994 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 | 2995 | |
5f7a1847 JB |
2996 | if (sta) |
2997 | return iwl_mvm_sta_from_mac80211(sta); | |
8ca151b5 JB |
2998 | |
2999 | /* | |
3000 | * The device expects GTKs for station interfaces to be | |
3001 | * installed as GTKs for the AP station. If we have no | |
3002 | * station ID, then use AP's station ID. | |
3003 | */ | |
3004 | if (vif->type == NL80211_IFTYPE_STATION && | |
0ae98812 | 3005 | mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { |
9513c5e1 AA |
3006 | u8 sta_id = mvmvif->ap_sta_id; |
3007 | ||
7d6a1ab6 EG |
3008 | sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], |
3009 | lockdep_is_held(&mvm->mutex)); | |
3010 | ||
9513c5e1 AA |
3011 | /* |
3012 | * It is possible that the 'sta' parameter is NULL, | |
3013 | * for example when a GTK is removed - the sta_id will then | |
3014 | * be the AP ID, and no station was passed by mac80211. | |
3015 | */ | |
7d6a1ab6 EG |
3016 | if (IS_ERR_OR_NULL(sta)) |
3017 | return NULL; | |
3018 | ||
3019 | return iwl_mvm_sta_from_mac80211(sta); | |
9513c5e1 | 3020 | } |
8ca151b5 | 3021 | |
5f7a1847 | 3022 | return NULL; |
8ca151b5 JB |
3023 | } |
3024 | ||
3025 | static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, | |
85aeb58c | 3026 | u32 sta_id, |
45c458b4 | 3027 | struct ieee80211_key_conf *key, bool mcast, |
d6ee54a9 LC |
3028 | u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, |
3029 | u8 key_offset) | |
8ca151b5 | 3030 | { |
45c458b4 SS |
3031 | union { |
3032 | struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; | |
3033 | struct iwl_mvm_add_sta_key_cmd cmd; | |
3034 | } u = {}; | |
f9dc0004 | 3035 | __le16 key_flags; |
79920749 JB |
3036 | int ret; |
3037 | u32 status; | |
8ca151b5 | 3038 | u16 keyidx; |
45c458b4 SS |
3039 | u64 pn = 0; |
3040 | int i, size; | |
3041 | bool new_api = fw_has_api(&mvm->fw->ucode_capa, | |
3042 | IWL_UCODE_TLV_API_TKIP_MIC_KEYS); | |
8ca151b5 | 3043 | |
85aeb58c DS |
3044 | if (sta_id == IWL_MVM_INVALID_STA) |
3045 | return -EINVAL; | |
3046 | ||
45c458b4 | 3047 | keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & |
8ca151b5 JB |
3048 | STA_KEY_FLG_KEYID_MSK; |
3049 | key_flags = cpu_to_le16(keyidx); | |
3050 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); | |
3051 | ||
45c458b4 | 3052 | switch (key->cipher) { |
8ca151b5 JB |
3053 | case WLAN_CIPHER_SUITE_TKIP: |
3054 | key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); | |
45c458b4 SS |
3055 | if (new_api) { |
3056 | memcpy((void *)&u.cmd.tx_mic_key, | |
3057 | &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], | |
3058 | IWL_MIC_KEY_SIZE); | |
3059 | ||
3060 | memcpy((void *)&u.cmd.rx_mic_key, | |
3061 | &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], | |
3062 | IWL_MIC_KEY_SIZE); | |
3063 | pn = atomic64_read(&key->tx_pn); | |
3064 | ||
3065 | } else { | |
3066 | u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; | |
3067 | for (i = 0; i < 5; i++) | |
3068 | u.cmd_v1.tkip_rx_ttak[i] = | |
3069 | cpu_to_le16(tkip_p1k[i]); | |
3070 | } | |
3071 | memcpy(u.cmd.common.key, key->key, key->keylen); | |
8ca151b5 JB |
3072 | break; |
3073 | case WLAN_CIPHER_SUITE_CCMP: | |
3074 | key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); | |
45c458b4 SS |
3075 | memcpy(u.cmd.common.key, key->key, key->keylen); |
3076 | if (new_api) | |
3077 | pn = atomic64_read(&key->tx_pn); | |
8ca151b5 | 3078 | break; |
ba3943b0 JB |
3079 | case WLAN_CIPHER_SUITE_WEP104: |
3080 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); | |
aa0cb08b | 3081 | /* fall through */ |
ba3943b0 JB |
3082 | case WLAN_CIPHER_SUITE_WEP40: |
3083 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); | |
45c458b4 | 3084 | memcpy(u.cmd.common.key + 3, key->key, key->keylen); |
ba3943b0 | 3085 | break; |
2a53d166 AB |
3086 | case WLAN_CIPHER_SUITE_GCMP_256: |
3087 | key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); | |
3088 | /* fall through */ | |
3089 | case WLAN_CIPHER_SUITE_GCMP: | |
3090 | key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); | |
45c458b4 SS |
3091 | memcpy(u.cmd.common.key, key->key, key->keylen); |
3092 | if (new_api) | |
3093 | pn = atomic64_read(&key->tx_pn); | |
2a53d166 | 3094 | break; |
8ca151b5 | 3095 | default: |
e36e5433 | 3096 | key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); |
45c458b4 | 3097 | memcpy(u.cmd.common.key, key->key, key->keylen); |
8ca151b5 JB |
3098 | } |
3099 | ||
ba3943b0 | 3100 | if (mcast) |
8ca151b5 JB |
3101 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
3102 | ||
45c458b4 SS |
3103 | u.cmd.common.key_offset = key_offset; |
3104 | u.cmd.common.key_flags = key_flags; | |
85aeb58c | 3105 | u.cmd.common.sta_id = sta_id; |
45c458b4 SS |
3106 | |
3107 | if (new_api) { | |
3108 | u.cmd.transmit_seq_cnt = cpu_to_le64(pn); | |
3109 | size = sizeof(u.cmd); | |
3110 | } else { | |
3111 | size = sizeof(u.cmd_v1); | |
3112 | } | |
8ca151b5 JB |
3113 | |
3114 | status = ADD_STA_SUCCESS; | |
a1022927 | 3115 | if (cmd_flags & CMD_ASYNC) |
45c458b4 SS |
3116 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, |
3117 | &u.cmd); | |
a1022927 | 3118 | else |
45c458b4 SS |
3119 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, |
3120 | &u.cmd, &status); | |
8ca151b5 JB |
3121 | |
3122 | switch (status) { | |
3123 | case ADD_STA_SUCCESS: | |
3124 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); | |
3125 | break; | |
3126 | default: | |
3127 | ret = -EIO; | |
3128 | IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); | |
3129 | break; | |
3130 | } | |
3131 | ||
3132 | return ret; | |
3133 | } | |
3134 | ||
3135 | static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, | |
3136 | struct ieee80211_key_conf *keyconf, | |
3137 | u8 sta_id, bool remove_key) | |
3138 | { | |
3139 | struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; | |
3140 | ||
3141 | /* verify the key details match the required command's expectations */ | |
8e160ab8 AB |
3142 | if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || |
3143 | (keyconf->keyidx != 4 && keyconf->keyidx != 5) || | |
3144 | (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && | |
3145 | keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && | |
3146 | keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) | |
3147 | return -EINVAL; | |
3148 | ||
3149 | if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && | |
3150 | keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) | |
8ca151b5 JB |
3151 | return -EINVAL; |
3152 | ||
3153 | igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); | |
3154 | igtk_cmd.sta_id = cpu_to_le32(sta_id); | |
3155 | ||
3156 | if (remove_key) { | |
3157 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); | |
3158 | } else { | |
3159 | struct ieee80211_key_seq seq; | |
3160 | const u8 *pn; | |
3161 | ||
aa950524 AB |
3162 | switch (keyconf->cipher) { |
3163 | case WLAN_CIPHER_SUITE_AES_CMAC: | |
3164 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); | |
3165 | break; | |
8e160ab8 AB |
3166 | case WLAN_CIPHER_SUITE_BIP_GMAC_128: |
3167 | case WLAN_CIPHER_SUITE_BIP_GMAC_256: | |
3168 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); | |
3169 | break; | |
aa950524 AB |
3170 | default: |
3171 | return -EINVAL; | |
3172 | } | |
3173 | ||
8e160ab8 AB |
3174 | memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); |
3175 | if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) | |
3176 | igtk_cmd.ctrl_flags |= | |
3177 | cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); | |
8ca151b5 JB |
3178 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); |
3179 | pn = seq.aes_cmac.pn; | |
3180 | igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | | |
3181 | ((u64) pn[4] << 8) | | |
3182 | ((u64) pn[3] << 16) | | |
3183 | ((u64) pn[2] << 24) | | |
3184 | ((u64) pn[1] << 32) | | |
3185 | ((u64) pn[0] << 40)); | |
3186 | } | |
3187 | ||
3188 | IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", | |
3189 | remove_key ? "removing" : "installing", | |
3190 | igtk_cmd.sta_id); | |
3191 | ||
8e160ab8 AB |
3192 | if (!iwl_mvm_has_new_rx_api(mvm)) { |
3193 | struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { | |
3194 | .ctrl_flags = igtk_cmd.ctrl_flags, | |
3195 | .key_id = igtk_cmd.key_id, | |
3196 | .sta_id = igtk_cmd.sta_id, | |
3197 | .receive_seq_cnt = igtk_cmd.receive_seq_cnt | |
3198 | }; | |
3199 | ||
3200 | memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, | |
3201 | ARRAY_SIZE(igtk_cmd_v1.igtk)); | |
3202 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, | |
3203 | sizeof(igtk_cmd_v1), &igtk_cmd_v1); | |
3204 | } | |
a1022927 | 3205 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
8ca151b5 JB |
3206 | sizeof(igtk_cmd), &igtk_cmd); |
3207 | } | |
3208 | ||
3209 | ||
3210 | static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, | |
3211 | struct ieee80211_vif *vif, | |
3212 | struct ieee80211_sta *sta) | |
3213 | { | |
5b530e95 | 3214 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
3215 | |
3216 | if (sta) | |
3217 | return sta->addr; | |
3218 | ||
3219 | if (vif->type == NL80211_IFTYPE_STATION && | |
0ae98812 | 3220 | mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { |
8ca151b5 JB |
3221 | u8 sta_id = mvmvif->ap_sta_id; |
3222 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
3223 | lockdep_is_held(&mvm->mutex)); | |
3224 | return sta->addr; | |
3225 | } | |
3226 | ||
3227 | ||
3228 | return NULL; | |
3229 | } | |
3230 | ||
2f6319d1 JB |
3231 | static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
3232 | struct ieee80211_vif *vif, | |
3233 | struct ieee80211_sta *sta, | |
ba3943b0 | 3234 | struct ieee80211_key_conf *keyconf, |
d6ee54a9 | 3235 | u8 key_offset, |
ba3943b0 | 3236 | bool mcast) |
2f6319d1 | 3237 | { |
2f6319d1 JB |
3238 | int ret; |
3239 | const u8 *addr; | |
3240 | struct ieee80211_key_seq seq; | |
3241 | u16 p1k[5]; | |
85aeb58c DS |
3242 | u32 sta_id; |
3243 | ||
3244 | if (sta) { | |
3245 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
3246 | ||
3247 | sta_id = mvm_sta->sta_id; | |
3248 | } else if (vif->type == NL80211_IFTYPE_AP && | |
3249 | !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { | |
3250 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
3251 | ||
3252 | sta_id = mvmvif->mcast_sta.sta_id; | |
3253 | } else { | |
3254 | IWL_ERR(mvm, "Failed to find station id\n"); | |
3255 | return -EINVAL; | |
3256 | } | |
2f6319d1 JB |
3257 | |
3258 | switch (keyconf->cipher) { | |
3259 | case WLAN_CIPHER_SUITE_TKIP: | |
85aeb58c DS |
3260 | if (vif->type == NL80211_IFTYPE_AP) { |
3261 | ret = -EINVAL; | |
3262 | break; | |
3263 | } | |
2f6319d1 JB |
3264 | addr = iwl_mvm_get_mac_addr(mvm, vif, sta); |
3265 | /* get phase 1 key from mac80211 */ | |
3266 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
3267 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
85aeb58c | 3268 | ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, |
d6ee54a9 | 3269 | seq.tkip.iv32, p1k, 0, key_offset); |
2f6319d1 JB |
3270 | break; |
3271 | case WLAN_CIPHER_SUITE_CCMP: | |
ba3943b0 JB |
3272 | case WLAN_CIPHER_SUITE_WEP40: |
3273 | case WLAN_CIPHER_SUITE_WEP104: | |
2a53d166 AB |
3274 | case WLAN_CIPHER_SUITE_GCMP: |
3275 | case WLAN_CIPHER_SUITE_GCMP_256: | |
85aeb58c | 3276 | ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, |
d6ee54a9 | 3277 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
3278 | break; |
3279 | default: | |
85aeb58c | 3280 | ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, |
d6ee54a9 | 3281 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
3282 | } |
3283 | ||
3284 | return ret; | |
3285 | } | |
3286 | ||
3287 | static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, | |
ba3943b0 JB |
3288 | struct ieee80211_key_conf *keyconf, |
3289 | bool mcast) | |
2f6319d1 | 3290 | { |
45c458b4 SS |
3291 | union { |
3292 | struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; | |
3293 | struct iwl_mvm_add_sta_key_cmd cmd; | |
3294 | } u = {}; | |
3295 | bool new_api = fw_has_api(&mvm->fw->ucode_capa, | |
3296 | IWL_UCODE_TLV_API_TKIP_MIC_KEYS); | |
2f6319d1 | 3297 | __le16 key_flags; |
45c458b4 | 3298 | int ret, size; |
2f6319d1 JB |
3299 | u32 status; |
3300 | ||
85aeb58c DS |
3301 | if (sta_id == IWL_MVM_INVALID_STA) |
3302 | return -EINVAL; | |
3303 | ||
2f6319d1 JB |
3304 | key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & |
3305 | STA_KEY_FLG_KEYID_MSK); | |
3306 | key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); | |
3307 | key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); | |
3308 | ||
ba3943b0 | 3309 | if (mcast) |
2f6319d1 JB |
3310 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
3311 | ||
45c458b4 SS |
3312 | /* |
3313 | * The fields assigned here are in the same location at the start | |
3314 | * of the command, so we can do this union trick. | |
3315 | */ | |
3316 | u.cmd.common.key_flags = key_flags; | |
3317 | u.cmd.common.key_offset = keyconf->hw_key_idx; | |
3318 | u.cmd.common.sta_id = sta_id; | |
3319 | ||
3320 | size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); | |
2f6319d1 JB |
3321 | |
3322 | status = ADD_STA_SUCCESS; | |
45c458b4 SS |
3323 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, |
3324 | &status); | |
2f6319d1 JB |
3325 | |
3326 | switch (status) { | |
3327 | case ADD_STA_SUCCESS: | |
3328 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); | |
3329 | break; | |
3330 | default: | |
3331 | ret = -EIO; | |
3332 | IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); | |
3333 | break; | |
3334 | } | |
3335 | ||
3336 | return ret; | |
3337 | } | |
3338 | ||
8ca151b5 JB |
3339 | int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
3340 | struct ieee80211_vif *vif, | |
3341 | struct ieee80211_sta *sta, | |
3342 | struct ieee80211_key_conf *keyconf, | |
d6ee54a9 | 3343 | u8 key_offset) |
8ca151b5 | 3344 | { |
ba3943b0 | 3345 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 | 3346 | struct iwl_mvm_sta *mvm_sta; |
85aeb58c | 3347 | u8 sta_id = IWL_MVM_INVALID_STA; |
8ca151b5 | 3348 | int ret; |
11828dbc | 3349 | static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; |
8ca151b5 JB |
3350 | |
3351 | lockdep_assert_held(&mvm->mutex); | |
3352 | ||
85aeb58c DS |
3353 | if (vif->type != NL80211_IFTYPE_AP || |
3354 | keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { | |
3355 | /* Get the station id from the mvm local station table */ | |
3356 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); | |
3357 | if (!mvm_sta) { | |
3358 | IWL_ERR(mvm, "Failed to find station\n"); | |
3359 | return -EINVAL; | |
3360 | } | |
3361 | sta_id = mvm_sta->sta_id; | |
8ca151b5 | 3362 | |
85aeb58c DS |
3363 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || |
3364 | keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || | |
3365 | keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { | |
3366 | ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, | |
3367 | false); | |
3368 | goto end; | |
3369 | } | |
8ca151b5 | 3370 | |
85aeb58c DS |
3371 | /* |
3372 | * It is possible that the 'sta' parameter is NULL, and thus | |
3373 | * there is a need to retrieve the sta from the local station | |
3374 | * table. | |
3375 | */ | |
3376 | if (!sta) { | |
3377 | sta = rcu_dereference_protected( | |
3378 | mvm->fw_id_to_mac_id[sta_id], | |
3379 | lockdep_is_held(&mvm->mutex)); | |
3380 | if (IS_ERR_OR_NULL(sta)) { | |
3381 | IWL_ERR(mvm, "Invalid station id\n"); | |
3382 | return -EINVAL; | |
3383 | } | |
8ca151b5 | 3384 | } |
8ca151b5 | 3385 | |
85aeb58c DS |
3386 | if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
3387 | return -EINVAL; | |
3388 | } | |
8ca151b5 | 3389 | |
d6ee54a9 LC |
3390 | /* If the key_offset is not pre-assigned, we need to find a |
3391 | * new offset to use. In normal cases, the offset is not | |
3392 | * pre-assigned, but during HW_RESTART we want to reuse the | |
3393 | * same indices, so we pass them when this function is called. | |
3394 | * | |
3395 | * In D3 entry, we need to hardcoded the indices (because the | |
3396 | * firmware hardcodes the PTK offset to 0). In this case, we | |
3397 | * need to make sure we don't overwrite the hw_key_idx in the | |
3398 | * keyconf structure, because otherwise we cannot configure | |
3399 | * the original ones back when resuming. | |
3400 | */ | |
3401 | if (key_offset == STA_KEY_IDX_INVALID) { | |
3402 | key_offset = iwl_mvm_set_fw_key_idx(mvm); | |
3403 | if (key_offset == STA_KEY_IDX_INVALID) | |
8ca151b5 | 3404 | return -ENOSPC; |
d6ee54a9 | 3405 | keyconf->hw_key_idx = key_offset; |
8ca151b5 JB |
3406 | } |
3407 | ||
d6ee54a9 | 3408 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); |
9c3deeb5 | 3409 | if (ret) |
ba3943b0 | 3410 | goto end; |
ba3943b0 JB |
3411 | |
3412 | /* | |
3413 | * For WEP, the same key is used for multicast and unicast. Upload it | |
3414 | * again, using the same key offset, and now pointing the other one | |
3415 | * to the same key slot (offset). | |
3416 | * If this fails, remove the original as well. | |
3417 | */ | |
85aeb58c DS |
3418 | if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || |
3419 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && | |
3420 | sta) { | |
d6ee54a9 LC |
3421 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, |
3422 | key_offset, !mcast); | |
ba3943b0 | 3423 | if (ret) { |
ba3943b0 | 3424 | __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
9c3deeb5 | 3425 | goto end; |
ba3943b0 JB |
3426 | } |
3427 | } | |
8ca151b5 | 3428 | |
9c3deeb5 LC |
3429 | __set_bit(key_offset, mvm->fw_key_table); |
3430 | ||
8ca151b5 JB |
3431 | end: |
3432 | IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
3433 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, | |
11828dbc | 3434 | sta ? sta->addr : zero_addr, ret); |
8ca151b5 JB |
3435 | return ret; |
3436 | } | |
3437 | ||
3438 | int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, | |
3439 | struct ieee80211_vif *vif, | |
3440 | struct ieee80211_sta *sta, | |
3441 | struct ieee80211_key_conf *keyconf) | |
3442 | { | |
ba3943b0 | 3443 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 | 3444 | struct iwl_mvm_sta *mvm_sta; |
0ae98812 | 3445 | u8 sta_id = IWL_MVM_INVALID_STA; |
2dc2a15e | 3446 | int ret, i; |
8ca151b5 JB |
3447 | |
3448 | lockdep_assert_held(&mvm->mutex); | |
3449 | ||
5f7a1847 JB |
3450 | /* Get the station from the mvm local station table */ |
3451 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); | |
71793b7d LC |
3452 | if (mvm_sta) |
3453 | sta_id = mvm_sta->sta_id; | |
85aeb58c DS |
3454 | else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) |
3455 | sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; | |
3456 | ||
8ca151b5 JB |
3457 | |
3458 | IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", | |
3459 | keyconf->keyidx, sta_id); | |
3460 | ||
71793b7d LC |
3461 | if (mvm_sta && (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || |
3462 | keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || | |
3463 | keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)) | |
8ca151b5 JB |
3464 | return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); |
3465 | ||
2f6319d1 | 3466 | if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { |
8ca151b5 JB |
3467 | IWL_ERR(mvm, "offset %d not used in fw key table.\n", |
3468 | keyconf->hw_key_idx); | |
3469 | return -ENOENT; | |
3470 | } | |
3471 | ||
2dc2a15e JB |
3472 | /* track which key was deleted last */ |
3473 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
3474 | if (mvm->fw_key_deleted[i] < U8_MAX) | |
3475 | mvm->fw_key_deleted[i]++; | |
3476 | } | |
3477 | mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; | |
3478 | ||
85aeb58c | 3479 | if (sta && !mvm_sta) { |
8ca151b5 JB |
3480 | IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); |
3481 | return 0; | |
3482 | } | |
3483 | ||
ba3943b0 JB |
3484 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
3485 | if (ret) | |
3486 | return ret; | |
3487 | ||
3488 | /* delete WEP key twice to get rid of (now useless) offset */ | |
3489 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
3490 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) | |
3491 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); | |
3492 | ||
3493 | return ret; | |
8ca151b5 JB |
3494 | } |
3495 | ||
3496 | void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, | |
3497 | struct ieee80211_vif *vif, | |
3498 | struct ieee80211_key_conf *keyconf, | |
3499 | struct ieee80211_sta *sta, u32 iv32, | |
3500 | u16 *phase1key) | |
3501 | { | |
c3eb536a | 3502 | struct iwl_mvm_sta *mvm_sta; |
ba3943b0 | 3503 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 3504 | |
c3eb536a BL |
3505 | rcu_read_lock(); |
3506 | ||
5f7a1847 JB |
3507 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
3508 | if (WARN_ON_ONCE(!mvm_sta)) | |
45854360 | 3509 | goto unlock; |
85aeb58c | 3510 | iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, |
d6ee54a9 | 3511 | iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); |
45854360 JB |
3512 | |
3513 | unlock: | |
c3eb536a | 3514 | rcu_read_unlock(); |
8ca151b5 JB |
3515 | } |
3516 | ||
9cc40712 JB |
3517 | void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, |
3518 | struct ieee80211_sta *sta) | |
8ca151b5 | 3519 | { |
5b577a90 | 3520 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 3521 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 3522 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 3523 | .sta_id = mvmsta->sta_id, |
5af01772 | 3524 | .station_flags_msk = cpu_to_le32(STA_FLG_PS), |
9cc40712 | 3525 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 JB |
3526 | }; |
3527 | int ret; | |
3528 | ||
854c5705 SS |
3529 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
3530 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
8ca151b5 JB |
3531 | if (ret) |
3532 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
3533 | } | |
3534 | ||
9cc40712 JB |
3535 | void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, |
3536 | struct ieee80211_sta *sta, | |
8ca151b5 | 3537 | enum ieee80211_frame_release_type reason, |
3e56eadf | 3538 | u16 cnt, u16 tids, bool more_data, |
9a3fcf91 | 3539 | bool single_sta_queue) |
8ca151b5 | 3540 | { |
5b577a90 | 3541 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 3542 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 3543 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 3544 | .sta_id = mvmsta->sta_id, |
8ca151b5 JB |
3545 | .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, |
3546 | .sleep_tx_count = cpu_to_le16(cnt), | |
9cc40712 | 3547 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 | 3548 | }; |
3e56eadf JB |
3549 | int tid, ret; |
3550 | unsigned long _tids = tids; | |
3551 | ||
3552 | /* convert TIDs to ACs - we don't support TSPEC so that's OK | |
3553 | * Note that this field is reserved and unused by firmware not | |
3554 | * supporting GO uAPSD, so it's safe to always do this. | |
3555 | */ | |
3556 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) | |
3557 | cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); | |
3558 | ||
9a3fcf91 SS |
3559 | /* If we're releasing frames from aggregation or dqa queues then check |
3560 | * if all the queues that we're releasing frames from, combined, have: | |
3e56eadf JB |
3561 | * - more frames than the service period, in which case more_data |
3562 | * needs to be set | |
3563 | * - fewer than 'cnt' frames, in which case we need to adjust the | |
3564 | * firmware command (but do that unconditionally) | |
3565 | */ | |
9a3fcf91 | 3566 | if (single_sta_queue) { |
3e56eadf | 3567 | int remaining = cnt; |
36be0eb6 | 3568 | int sleep_tx_count; |
3e56eadf JB |
3569 | |
3570 | spin_lock_bh(&mvmsta->lock); | |
3571 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { | |
3572 | struct iwl_mvm_tid_data *tid_data; | |
3573 | u16 n_queued; | |
3574 | ||
3575 | tid_data = &mvmsta->tid_data[tid]; | |
9a3fcf91 SS |
3576 | if (WARN(!iwl_mvm_is_dqa_supported(mvm) && |
3577 | tid_data->state != IWL_AGG_ON && | |
3e56eadf JB |
3578 | tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, |
3579 | "TID %d state is %d\n", | |
3580 | tid, tid_data->state)) { | |
3581 | spin_unlock_bh(&mvmsta->lock); | |
3582 | ieee80211_sta_eosp(sta); | |
3583 | return; | |
3584 | } | |
3585 | ||
dd32162d | 3586 | n_queued = iwl_mvm_tid_queued(mvm, tid_data); |
3e56eadf JB |
3587 | if (n_queued > remaining) { |
3588 | more_data = true; | |
3589 | remaining = 0; | |
3590 | break; | |
3591 | } | |
3592 | remaining -= n_queued; | |
3593 | } | |
36be0eb6 EG |
3594 | sleep_tx_count = cnt - remaining; |
3595 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) | |
3596 | mvmsta->sleep_tx_count = sleep_tx_count; | |
3e56eadf JB |
3597 | spin_unlock_bh(&mvmsta->lock); |
3598 | ||
36be0eb6 | 3599 | cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); |
3e56eadf JB |
3600 | if (WARN_ON(cnt - remaining == 0)) { |
3601 | ieee80211_sta_eosp(sta); | |
3602 | return; | |
3603 | } | |
3604 | } | |
3605 | ||
3606 | /* Note: this is ignored by firmware not supporting GO uAPSD */ | |
3607 | if (more_data) | |
ced19f26 | 3608 | cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; |
3e56eadf JB |
3609 | |
3610 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { | |
3611 | mvmsta->next_status_eosp = true; | |
ced19f26 | 3612 | cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; |
3e56eadf | 3613 | } else { |
ced19f26 | 3614 | cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; |
3e56eadf | 3615 | } |
8ca151b5 | 3616 | |
156f92f2 EG |
3617 | /* block the Tx queues until the FW updated the sleep Tx count */ |
3618 | iwl_trans_block_txq_ptrs(mvm->trans, true); | |
3619 | ||
3620 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, | |
3621 | CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, | |
854c5705 | 3622 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); |
8ca151b5 JB |
3623 | if (ret) |
3624 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
3625 | } | |
3e56eadf | 3626 | |
0416841d JB |
3627 | void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, |
3628 | struct iwl_rx_cmd_buffer *rxb) | |
3e56eadf JB |
3629 | { |
3630 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
3631 | struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; | |
3632 | struct ieee80211_sta *sta; | |
3633 | u32 sta_id = le32_to_cpu(notif->sta_id); | |
3634 | ||
3635 | if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) | |
0416841d | 3636 | return; |
3e56eadf JB |
3637 | |
3638 | rcu_read_lock(); | |
3639 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
3640 | if (!IS_ERR_OR_NULL(sta)) | |
3641 | ieee80211_sta_eosp(sta); | |
3642 | rcu_read_unlock(); | |
3e56eadf | 3643 | } |
09b0ce1a AO |
3644 | |
3645 | void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, | |
3646 | struct iwl_mvm_sta *mvmsta, bool disable) | |
3647 | { | |
3648 | struct iwl_mvm_add_sta_cmd cmd = { | |
3649 | .add_modify = STA_MODE_MODIFY, | |
3650 | .sta_id = mvmsta->sta_id, | |
3651 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
3652 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
3653 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), | |
3654 | }; | |
3655 | int ret; | |
3656 | ||
854c5705 SS |
3657 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
3658 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
09b0ce1a AO |
3659 | if (ret) |
3660 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
3661 | } | |
003e5236 AO |
3662 | |
3663 | void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, | |
3664 | struct ieee80211_sta *sta, | |
3665 | bool disable) | |
3666 | { | |
3667 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
3668 | ||
3669 | spin_lock_bh(&mvm_sta->lock); | |
3670 | ||
3671 | if (mvm_sta->disable_tx == disable) { | |
3672 | spin_unlock_bh(&mvm_sta->lock); | |
3673 | return; | |
3674 | } | |
3675 | ||
3676 | mvm_sta->disable_tx = disable; | |
3677 | ||
3678 | /* | |
0d365ae5 SS |
3679 | * Tell mac80211 to start/stop queuing tx for this station, |
3680 | * but don't stop queuing if there are still pending frames | |
003e5236 AO |
3681 | * for this station. |
3682 | */ | |
3683 | if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) | |
3684 | ieee80211_sta_block_awake(mvm->hw, sta, disable); | |
3685 | ||
3686 | iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); | |
3687 | ||
3688 | spin_unlock_bh(&mvm_sta->lock); | |
3689 | } | |
3690 | ||
ced19f26 SS |
3691 | static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, |
3692 | struct iwl_mvm_vif *mvmvif, | |
3693 | struct iwl_mvm_int_sta *sta, | |
3694 | bool disable) | |
3695 | { | |
3696 | u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); | |
3697 | struct iwl_mvm_add_sta_cmd cmd = { | |
3698 | .add_modify = STA_MODE_MODIFY, | |
3699 | .sta_id = sta->sta_id, | |
3700 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
3701 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
3702 | .mac_id_n_color = cpu_to_le32(id), | |
3703 | }; | |
3704 | int ret; | |
3705 | ||
3706 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 0, | |
3707 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
3708 | if (ret) | |
3709 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
3710 | } | |
3711 | ||
003e5236 AO |
3712 | void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, |
3713 | struct iwl_mvm_vif *mvmvif, | |
3714 | bool disable) | |
3715 | { | |
3716 | struct ieee80211_sta *sta; | |
3717 | struct iwl_mvm_sta *mvm_sta; | |
3718 | int i; | |
3719 | ||
3720 | lockdep_assert_held(&mvm->mutex); | |
3721 | ||
3722 | /* Block/unblock all the stations of the given mvmvif */ | |
0ae98812 | 3723 | for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { |
003e5236 AO |
3724 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], |
3725 | lockdep_is_held(&mvm->mutex)); | |
3726 | if (IS_ERR_OR_NULL(sta)) | |
3727 | continue; | |
3728 | ||
3729 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
3730 | if (mvm_sta->mac_id_n_color != | |
3731 | FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) | |
3732 | continue; | |
3733 | ||
3734 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); | |
3735 | } | |
ced19f26 SS |
3736 | |
3737 | if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) | |
3738 | return; | |
3739 | ||
3740 | /* Need to block/unblock also multicast station */ | |
3741 | if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) | |
3742 | iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, | |
3743 | &mvmvif->mcast_sta, disable); | |
3744 | ||
3745 | /* | |
3746 | * Only unblock the broadcast station (FW blocks it for immediate | |
3747 | * quiet, not the driver) | |
3748 | */ | |
3749 | if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) | |
3750 | iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, | |
3751 | &mvmvif->bcast_sta, disable); | |
003e5236 | 3752 | } |
dc88b4ba LC |
3753 | |
3754 | void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
3755 | { | |
3756 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
3757 | struct iwl_mvm_sta *mvmsta; | |
3758 | ||
3759 | rcu_read_lock(); | |
3760 | ||
3761 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); | |
3762 | ||
3763 | if (!WARN_ON(!mvmsta)) | |
3764 | iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); | |
3765 | ||
3766 | rcu_read_unlock(); | |
3767 | } | |
dd32162d LK |
3768 | |
3769 | u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) | |
3770 | { | |
3771 | u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); | |
3772 | ||
3773 | /* | |
3774 | * In A000 HW, the next_reclaimed index is only 8 bit, so we'll need | |
3775 | * to align the wrap around of ssn so we compare relevant values. | |
3776 | */ | |
3777 | if (mvm->trans->cfg->gen2) | |
3778 | sn &= 0xff; | |
3779 | ||
3780 | return ieee80211_sn_sub(sn, tid_data->next_reclaimed); | |
3781 | } |