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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 | | |
8addabf8 NG |
124 | STA_FLG_MIMO_EN_MSK | |
125 | STA_FLG_RTS_MIMO_PROT), | |
cf0cda19 | 126 | .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), |
4b8265ab | 127 | }; |
8ca151b5 JB |
128 | int ret; |
129 | u32 status; | |
130 | u32 agg_size = 0, mpdu_dens = 0; | |
131 | ||
ced19f26 SS |
132 | if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) |
133 | add_sta_cmd.station_type = mvm_sta->sta_type; | |
134 | ||
24afba76 | 135 | if (!update || (flags & STA_MODIFY_QUEUES)) { |
7a453973 | 136 | memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); |
24afba76 | 137 | |
bb49701b SS |
138 | if (!iwl_mvm_has_new_tx_api(mvm)) { |
139 | add_sta_cmd.tfd_queue_msk = | |
140 | cpu_to_le32(mvm_sta->tfd_queue_msk); | |
141 | ||
142 | if (flags & STA_MODIFY_QUEUES) | |
143 | add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; | |
144 | } else { | |
145 | WARN_ON(flags & STA_MODIFY_QUEUES); | |
146 | } | |
7a453973 | 147 | } |
5bc5aaad JB |
148 | |
149 | switch (sta->bandwidth) { | |
150 | case IEEE80211_STA_RX_BW_160: | |
151 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); | |
152 | /* fall through */ | |
153 | case IEEE80211_STA_RX_BW_80: | |
154 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); | |
155 | /* fall through */ | |
156 | case IEEE80211_STA_RX_BW_40: | |
157 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); | |
158 | /* fall through */ | |
159 | case IEEE80211_STA_RX_BW_20: | |
160 | if (sta->ht_cap.ht_supported) | |
161 | add_sta_cmd.station_flags |= | |
162 | cpu_to_le32(STA_FLG_FAT_EN_20MHZ); | |
163 | break; | |
164 | } | |
165 | ||
166 | switch (sta->rx_nss) { | |
167 | case 1: | |
168 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
169 | break; | |
170 | case 2: | |
171 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); | |
172 | break; | |
173 | case 3 ... 8: | |
174 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); | |
175 | break; | |
176 | } | |
177 | ||
178 | switch (sta->smps_mode) { | |
179 | case IEEE80211_SMPS_AUTOMATIC: | |
180 | case IEEE80211_SMPS_NUM_MODES: | |
181 | WARN_ON(1); | |
182 | break; | |
183 | case IEEE80211_SMPS_STATIC: | |
184 | /* override NSS */ | |
185 | add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); | |
186 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
187 | break; | |
188 | case IEEE80211_SMPS_DYNAMIC: | |
189 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); | |
190 | break; | |
191 | case IEEE80211_SMPS_OFF: | |
192 | /* nothing */ | |
193 | break; | |
194 | } | |
8ca151b5 JB |
195 | |
196 | if (sta->ht_cap.ht_supported) { | |
197 | add_sta_cmd.station_flags_msk |= | |
198 | cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | | |
199 | STA_FLG_AGG_MPDU_DENS_MSK); | |
200 | ||
201 | mpdu_dens = sta->ht_cap.ampdu_density; | |
202 | } | |
203 | ||
204 | if (sta->vht_cap.vht_supported) { | |
205 | agg_size = sta->vht_cap.cap & | |
206 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; | |
207 | agg_size >>= | |
208 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; | |
209 | } else if (sta->ht_cap.ht_supported) { | |
210 | agg_size = sta->ht_cap.ampdu_factor; | |
211 | } | |
212 | ||
213 | add_sta_cmd.station_flags |= | |
214 | cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); | |
215 | add_sta_cmd.station_flags |= | |
216 | cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); | |
6ea29ce5 JB |
217 | if (mvm_sta->associated) |
218 | add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); | |
8ca151b5 | 219 | |
65e25482 JB |
220 | if (sta->wme) { |
221 | add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; | |
222 | ||
223 | if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) | |
c80eb570 | 224 | add_sta_cmd.uapsd_acs |= BIT(AC_BK); |
65e25482 | 225 | if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
c80eb570 | 226 | add_sta_cmd.uapsd_acs |= BIT(AC_BE); |
65e25482 | 227 | if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
c80eb570 | 228 | add_sta_cmd.uapsd_acs |= BIT(AC_VI); |
65e25482 | 229 | if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
c80eb570 EG |
230 | add_sta_cmd.uapsd_acs |= BIT(AC_VO); |
231 | add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; | |
e71ca5ea | 232 | add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; |
65e25482 JB |
233 | } |
234 | ||
8ca151b5 | 235 | status = ADD_STA_SUCCESS; |
854c5705 SS |
236 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
237 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 238 | &add_sta_cmd, &status); |
8ca151b5 JB |
239 | if (ret) |
240 | return ret; | |
241 | ||
837c4da9 | 242 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
243 | case ADD_STA_SUCCESS: |
244 | IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); | |
245 | break; | |
246 | default: | |
247 | ret = -EIO; | |
248 | IWL_ERR(mvm, "ADD_STA failed\n"); | |
249 | break; | |
250 | } | |
251 | ||
252 | return ret; | |
253 | } | |
254 | ||
8cef5344 | 255 | static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) |
10b2b201 | 256 | { |
8cef5344 KC |
257 | struct iwl_mvm_baid_data *data = |
258 | from_timer(data, t, session_timer); | |
259 | struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; | |
10b2b201 SS |
260 | struct iwl_mvm_baid_data *ba_data; |
261 | struct ieee80211_sta *sta; | |
262 | struct iwl_mvm_sta *mvm_sta; | |
263 | unsigned long timeout; | |
264 | ||
265 | rcu_read_lock(); | |
266 | ||
267 | ba_data = rcu_dereference(*rcu_ptr); | |
268 | ||
269 | if (WARN_ON(!ba_data)) | |
270 | goto unlock; | |
271 | ||
272 | if (!ba_data->timeout) | |
273 | goto unlock; | |
274 | ||
275 | timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); | |
276 | if (time_is_after_jiffies(timeout)) { | |
277 | mod_timer(&ba_data->session_timer, timeout); | |
278 | goto unlock; | |
279 | } | |
280 | ||
281 | /* Timer expired */ | |
282 | sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); | |
61dd8a8a EG |
283 | |
284 | /* | |
285 | * sta should be valid unless the following happens: | |
286 | * The firmware asserts which triggers a reconfig flow, but | |
287 | * the reconfig fails before we set the pointer to sta into | |
288 | * the fw_id_to_mac_id pointer table. Mac80211 can't stop | |
289 | * A-MDPU and hence the timer continues to run. Then, the | |
290 | * timer expires and sta is NULL. | |
291 | */ | |
292 | if (!sta) | |
293 | goto unlock; | |
294 | ||
10b2b201 | 295 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
20fc690f NG |
296 | ieee80211_rx_ba_timer_expired(mvm_sta->vif, |
297 | sta->addr, ba_data->tid); | |
10b2b201 SS |
298 | unlock: |
299 | rcu_read_unlock(); | |
300 | } | |
301 | ||
9794c64f LK |
302 | /* Disable aggregations for a bitmap of TIDs for a given station */ |
303 | static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, | |
304 | unsigned long disable_agg_tids, | |
305 | bool remove_queue) | |
306 | { | |
307 | struct iwl_mvm_add_sta_cmd cmd = {}; | |
308 | struct ieee80211_sta *sta; | |
309 | struct iwl_mvm_sta *mvmsta; | |
310 | u32 status; | |
311 | u8 sta_id; | |
312 | int ret; | |
313 | ||
bb49701b SS |
314 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
315 | return -EINVAL; | |
316 | ||
9794c64f LK |
317 | spin_lock_bh(&mvm->queue_info_lock); |
318 | sta_id = mvm->queue_info[queue].ra_sta_id; | |
319 | spin_unlock_bh(&mvm->queue_info_lock); | |
320 | ||
321 | rcu_read_lock(); | |
322 | ||
323 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
324 | ||
325 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { | |
326 | rcu_read_unlock(); | |
327 | return -EINVAL; | |
328 | } | |
329 | ||
330 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
331 | ||
332 | mvmsta->tid_disable_agg |= disable_agg_tids; | |
333 | ||
334 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
335 | cmd.sta_id = mvmsta->sta_id; | |
336 | cmd.add_modify = STA_MODE_MODIFY; | |
337 | cmd.modify_mask = STA_MODIFY_QUEUES; | |
338 | if (disable_agg_tids) | |
339 | cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; | |
340 | if (remove_queue) | |
341 | cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; | |
342 | cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); | |
343 | cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); | |
344 | ||
345 | rcu_read_unlock(); | |
346 | ||
347 | /* Notify FW of queue removal from the STA queues */ | |
348 | status = ADD_STA_SUCCESS; | |
349 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, | |
350 | iwl_mvm_add_sta_cmd_size(mvm), | |
351 | &cmd, &status); | |
352 | ||
353 | return ret; | |
354 | } | |
355 | ||
42db09c1 LK |
356 | static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) |
357 | { | |
358 | struct ieee80211_sta *sta; | |
359 | struct iwl_mvm_sta *mvmsta; | |
360 | unsigned long tid_bitmap; | |
361 | unsigned long agg_tids = 0; | |
806911da | 362 | u8 sta_id; |
42db09c1 LK |
363 | int tid; |
364 | ||
365 | lockdep_assert_held(&mvm->mutex); | |
366 | ||
bb49701b SS |
367 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
368 | return -EINVAL; | |
369 | ||
42db09c1 LK |
370 | spin_lock_bh(&mvm->queue_info_lock); |
371 | sta_id = mvm->queue_info[queue].ra_sta_id; | |
372 | tid_bitmap = mvm->queue_info[queue].tid_bitmap; | |
373 | spin_unlock_bh(&mvm->queue_info_lock); | |
374 | ||
375 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
376 | lockdep_is_held(&mvm->mutex)); | |
377 | ||
378 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) | |
379 | return -EINVAL; | |
380 | ||
381 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
382 | ||
383 | spin_lock_bh(&mvmsta->lock); | |
384 | for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { | |
385 | if (mvmsta->tid_data[tid].state == IWL_AGG_ON) | |
386 | agg_tids |= BIT(tid); | |
387 | } | |
388 | spin_unlock_bh(&mvmsta->lock); | |
389 | ||
390 | return agg_tids; | |
391 | } | |
392 | ||
9794c64f LK |
393 | /* |
394 | * Remove a queue from a station's resources. | |
395 | * Note that this only marks as free. It DOESN'T delete a BA agreement, and | |
396 | * doesn't disable the queue | |
397 | */ | |
398 | static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) | |
399 | { | |
400 | struct ieee80211_sta *sta; | |
401 | struct iwl_mvm_sta *mvmsta; | |
402 | unsigned long tid_bitmap; | |
403 | unsigned long disable_agg_tids = 0; | |
404 | u8 sta_id; | |
405 | int tid; | |
406 | ||
407 | lockdep_assert_held(&mvm->mutex); | |
408 | ||
bb49701b SS |
409 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
410 | return -EINVAL; | |
411 | ||
9794c64f LK |
412 | spin_lock_bh(&mvm->queue_info_lock); |
413 | sta_id = mvm->queue_info[queue].ra_sta_id; | |
414 | tid_bitmap = mvm->queue_info[queue].tid_bitmap; | |
415 | spin_unlock_bh(&mvm->queue_info_lock); | |
416 | ||
417 | rcu_read_lock(); | |
418 | ||
419 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
420 | ||
421 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { | |
422 | rcu_read_unlock(); | |
423 | return 0; | |
424 | } | |
425 | ||
426 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
427 | ||
428 | spin_lock_bh(&mvmsta->lock); | |
42db09c1 | 429 | /* Unmap MAC queues and TIDs from this queue */ |
9794c64f | 430 | for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { |
9794c64f LK |
431 | if (mvmsta->tid_data[tid].state == IWL_AGG_ON) |
432 | disable_agg_tids |= BIT(tid); | |
6862fcee | 433 | mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; |
9794c64f | 434 | } |
9794c64f | 435 | |
42db09c1 | 436 | mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ |
9794c64f LK |
437 | spin_unlock_bh(&mvmsta->lock); |
438 | ||
439 | rcu_read_unlock(); | |
440 | ||
9794c64f LK |
441 | return disable_agg_tids; |
442 | } | |
443 | ||
01796ff2 SS |
444 | static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, |
445 | bool same_sta) | |
446 | { | |
447 | struct iwl_mvm_sta *mvmsta; | |
448 | u8 txq_curr_ac, sta_id, tid; | |
449 | unsigned long disable_agg_tids = 0; | |
450 | int ret; | |
451 | ||
452 | lockdep_assert_held(&mvm->mutex); | |
453 | ||
bb49701b SS |
454 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
455 | return -EINVAL; | |
456 | ||
01796ff2 SS |
457 | spin_lock_bh(&mvm->queue_info_lock); |
458 | txq_curr_ac = mvm->queue_info[queue].mac80211_ac; | |
459 | sta_id = mvm->queue_info[queue].ra_sta_id; | |
460 | tid = mvm->queue_info[queue].txq_tid; | |
461 | spin_unlock_bh(&mvm->queue_info_lock); | |
462 | ||
463 | mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); | |
e3df1e4b SD |
464 | if (WARN_ON(!mvmsta)) |
465 | return -EINVAL; | |
01796ff2 SS |
466 | |
467 | disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); | |
468 | /* Disable the queue */ | |
469 | if (disable_agg_tids) | |
470 | iwl_mvm_invalidate_sta_queue(mvm, queue, | |
471 | disable_agg_tids, false); | |
472 | ||
473 | ret = iwl_mvm_disable_txq(mvm, queue, | |
474 | mvmsta->vif->hw_queue[txq_curr_ac], | |
475 | tid, 0); | |
476 | if (ret) { | |
477 | /* Re-mark the inactive queue as inactive */ | |
478 | spin_lock_bh(&mvm->queue_info_lock); | |
479 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE; | |
480 | spin_unlock_bh(&mvm->queue_info_lock); | |
481 | IWL_ERR(mvm, | |
482 | "Failed to free inactive queue %d (ret=%d)\n", | |
483 | queue, ret); | |
484 | ||
485 | return ret; | |
486 | } | |
487 | ||
488 | /* If TXQ is allocated to another STA, update removal in FW */ | |
489 | if (!same_sta) | |
490 | iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); | |
491 | ||
492 | return 0; | |
493 | } | |
494 | ||
42db09c1 LK |
495 | static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, |
496 | unsigned long tfd_queue_mask, u8 ac) | |
497 | { | |
498 | int queue = 0; | |
499 | u8 ac_to_queue[IEEE80211_NUM_ACS]; | |
500 | int i; | |
501 | ||
502 | lockdep_assert_held(&mvm->queue_info_lock); | |
bb49701b SS |
503 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
504 | return -EINVAL; | |
42db09c1 LK |
505 | |
506 | memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); | |
507 | ||
508 | /* See what ACs the existing queues for this STA have */ | |
509 | for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { | |
510 | /* Only DATA queues can be shared */ | |
511 | if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && | |
512 | i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) | |
513 | continue; | |
514 | ||
9f9af3d7 LK |
515 | /* Don't try and take queues being reconfigured */ |
516 | if (mvm->queue_info[queue].status == | |
517 | IWL_MVM_QUEUE_RECONFIGURING) | |
518 | continue; | |
519 | ||
42db09c1 LK |
520 | ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; |
521 | } | |
522 | ||
523 | /* | |
524 | * The queue to share is chosen only from DATA queues as follows (in | |
525 | * descending priority): | |
526 | * 1. An AC_BE queue | |
527 | * 2. Same AC queue | |
528 | * 3. Highest AC queue that is lower than new AC | |
529 | * 4. Any existing AC (there always is at least 1 DATA queue) | |
530 | */ | |
531 | ||
532 | /* Priority 1: An AC_BE queue */ | |
533 | if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) | |
534 | queue = ac_to_queue[IEEE80211_AC_BE]; | |
535 | /* Priority 2: Same AC queue */ | |
536 | else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) | |
537 | queue = ac_to_queue[ac]; | |
538 | /* Priority 3a: If new AC is VO and VI exists - use VI */ | |
539 | else if (ac == IEEE80211_AC_VO && | |
540 | ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) | |
541 | queue = ac_to_queue[IEEE80211_AC_VI]; | |
542 | /* Priority 3b: No BE so only AC less than the new one is BK */ | |
543 | else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) | |
544 | queue = ac_to_queue[IEEE80211_AC_BK]; | |
545 | /* Priority 4a: No BE nor BK - use VI if exists */ | |
546 | else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) | |
547 | queue = ac_to_queue[IEEE80211_AC_VI]; | |
548 | /* Priority 4b: No BE, BK nor VI - use VO if exists */ | |
549 | else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) | |
550 | queue = ac_to_queue[IEEE80211_AC_VO]; | |
551 | ||
552 | /* Make sure queue found (or not) is legal */ | |
9f9af3d7 LK |
553 | if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && |
554 | !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && | |
555 | (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { | |
42db09c1 | 556 | IWL_ERR(mvm, "No DATA queues available to share\n"); |
9f9af3d7 LK |
557 | return -ENOSPC; |
558 | } | |
559 | ||
560 | /* Make sure the queue isn't in the middle of being reconfigured */ | |
561 | if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_RECONFIGURING) { | |
562 | IWL_ERR(mvm, | |
563 | "TXQ %d is in the middle of re-config - try again\n", | |
564 | queue); | |
565 | return -EBUSY; | |
42db09c1 LK |
566 | } |
567 | ||
568 | return queue; | |
569 | } | |
570 | ||
58f2cc57 | 571 | /* |
9f9af3d7 LK |
572 | * If a given queue has a higher AC than the TID stream that is being compared |
573 | * to, the queue needs to be redirected to the lower AC. This function does that | |
58f2cc57 LK |
574 | * in such a case, otherwise - if no redirection required - it does nothing, |
575 | * unless the %force param is true. | |
576 | */ | |
9f9af3d7 LK |
577 | int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid, |
578 | int ac, int ssn, unsigned int wdg_timeout, | |
579 | bool force) | |
58f2cc57 LK |
580 | { |
581 | struct iwl_scd_txq_cfg_cmd cmd = { | |
582 | .scd_queue = queue, | |
f7c692de | 583 | .action = SCD_CFG_DISABLE_QUEUE, |
58f2cc57 LK |
584 | }; |
585 | bool shared_queue; | |
586 | unsigned long mq; | |
587 | int ret; | |
588 | ||
bb49701b SS |
589 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
590 | return -EINVAL; | |
591 | ||
58f2cc57 LK |
592 | /* |
593 | * If the AC is lower than current one - FIFO needs to be redirected to | |
594 | * the lowest one of the streams in the queue. Check if this is needed | |
595 | * here. | |
596 | * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with | |
597 | * value 3 and VO with value 0, so to check if ac X is lower than ac Y | |
598 | * we need to check if the numerical value of X is LARGER than of Y. | |
599 | */ | |
600 | spin_lock_bh(&mvm->queue_info_lock); | |
601 | if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { | |
602 | spin_unlock_bh(&mvm->queue_info_lock); | |
603 | ||
604 | IWL_DEBUG_TX_QUEUES(mvm, | |
605 | "No redirection needed on TXQ #%d\n", | |
606 | queue); | |
607 | return 0; | |
608 | } | |
609 | ||
610 | cmd.sta_id = mvm->queue_info[queue].ra_sta_id; | |
611 | cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; | |
edbe961c | 612 | cmd.tid = mvm->queue_info[queue].txq_tid; |
34e10860 | 613 | mq = mvm->hw_queue_to_mac80211[queue]; |
58f2cc57 LK |
614 | shared_queue = (mvm->queue_info[queue].hw_queue_refcount > 1); |
615 | spin_unlock_bh(&mvm->queue_info_lock); | |
616 | ||
9f9af3d7 | 617 | IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", |
58f2cc57 LK |
618 | queue, iwl_mvm_ac_to_tx_fifo[ac]); |
619 | ||
620 | /* Stop MAC queues and wait for this queue to empty */ | |
621 | iwl_mvm_stop_mac_queues(mvm, mq); | |
a1a57877 | 622 | ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); |
58f2cc57 LK |
623 | if (ret) { |
624 | IWL_ERR(mvm, "Error draining queue %d before reconfig\n", | |
625 | queue); | |
626 | ret = -EIO; | |
627 | goto out; | |
628 | } | |
629 | ||
630 | /* Before redirecting the queue we need to de-activate it */ | |
631 | iwl_trans_txq_disable(mvm->trans, queue, false); | |
632 | ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); | |
633 | if (ret) | |
634 | IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, | |
635 | ret); | |
636 | ||
637 | /* Make sure the SCD wrptr is correctly set before reconfiguring */ | |
ca3b9c6b | 638 | iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); |
58f2cc57 | 639 | |
edbe961c LK |
640 | /* Update the TID "owner" of the queue */ |
641 | spin_lock_bh(&mvm->queue_info_lock); | |
642 | mvm->queue_info[queue].txq_tid = tid; | |
643 | spin_unlock_bh(&mvm->queue_info_lock); | |
644 | ||
58f2cc57 LK |
645 | /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ |
646 | ||
647 | /* Redirect to lower AC */ | |
648 | iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], | |
0ec9257b | 649 | cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); |
58f2cc57 LK |
650 | |
651 | /* Update AC marking of the queue */ | |
652 | spin_lock_bh(&mvm->queue_info_lock); | |
653 | mvm->queue_info[queue].mac80211_ac = ac; | |
654 | spin_unlock_bh(&mvm->queue_info_lock); | |
655 | ||
656 | /* | |
657 | * Mark queue as shared in transport if shared | |
658 | * Note this has to be done after queue enablement because enablement | |
659 | * can also set this value, and there is no indication there to shared | |
660 | * queues | |
661 | */ | |
662 | if (shared_queue) | |
663 | iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); | |
664 | ||
665 | out: | |
666 | /* Continue using the MAC queues */ | |
667 | iwl_mvm_start_mac_queues(mvm, mq); | |
668 | ||
669 | return ret; | |
670 | } | |
671 | ||
310181ec SS |
672 | static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, |
673 | struct ieee80211_sta *sta, u8 ac, | |
674 | int tid) | |
675 | { | |
676 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
677 | unsigned int wdg_timeout = | |
678 | iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); | |
679 | u8 mac_queue = mvmsta->vif->hw_queue[ac]; | |
680 | int queue = -1; | |
681 | ||
682 | lockdep_assert_held(&mvm->mutex); | |
683 | ||
684 | IWL_DEBUG_TX_QUEUES(mvm, | |
685 | "Allocating queue for sta %d on tid %d\n", | |
686 | mvmsta->sta_id, tid); | |
687 | queue = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, mvmsta->sta_id, tid, | |
688 | wdg_timeout); | |
689 | if (queue < 0) | |
690 | return queue; | |
691 | ||
692 | IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); | |
693 | ||
694 | spin_lock_bh(&mvmsta->lock); | |
695 | mvmsta->tid_data[tid].txq_id = queue; | |
696 | mvmsta->tid_data[tid].is_tid_active = true; | |
310181ec SS |
697 | spin_unlock_bh(&mvmsta->lock); |
698 | ||
310181ec SS |
699 | return 0; |
700 | } | |
701 | ||
24afba76 LK |
702 | static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, |
703 | struct ieee80211_sta *sta, u8 ac, int tid, | |
704 | struct ieee80211_hdr *hdr) | |
705 | { | |
706 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
707 | struct iwl_trans_txq_scd_cfg cfg = { | |
cf6c6ea3 | 708 | .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), |
24afba76 LK |
709 | .sta_id = mvmsta->sta_id, |
710 | .tid = tid, | |
711 | .frame_limit = IWL_FRAME_LIMIT, | |
712 | }; | |
713 | unsigned int wdg_timeout = | |
714 | iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); | |
715 | u8 mac_queue = mvmsta->vif->hw_queue[ac]; | |
716 | int queue = -1; | |
01796ff2 | 717 | bool using_inactive_queue = false, same_sta = false; |
9794c64f LK |
718 | unsigned long disable_agg_tids = 0; |
719 | enum iwl_mvm_agg_state queue_state; | |
dcfbd67b | 720 | bool shared_queue = false, inc_ssn; |
24afba76 | 721 | int ssn; |
42db09c1 | 722 | unsigned long tfd_queue_mask; |
cf961e16 | 723 | int ret; |
24afba76 LK |
724 | |
725 | lockdep_assert_held(&mvm->mutex); | |
726 | ||
310181ec SS |
727 | if (iwl_mvm_has_new_tx_api(mvm)) |
728 | return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); | |
729 | ||
42db09c1 LK |
730 | spin_lock_bh(&mvmsta->lock); |
731 | tfd_queue_mask = mvmsta->tfd_queue_msk; | |
732 | spin_unlock_bh(&mvmsta->lock); | |
733 | ||
d2515a99 | 734 | spin_lock_bh(&mvm->queue_info_lock); |
24afba76 LK |
735 | |
736 | /* | |
737 | * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one | |
738 | * exists | |
739 | */ | |
740 | if (!ieee80211_is_data_qos(hdr->frame_control) || | |
741 | ieee80211_is_qos_nullfunc(hdr->frame_control)) { | |
9794c64f LK |
742 | queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, |
743 | IWL_MVM_DQA_MIN_MGMT_QUEUE, | |
24afba76 LK |
744 | IWL_MVM_DQA_MAX_MGMT_QUEUE); |
745 | if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) | |
746 | IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", | |
747 | queue); | |
748 | ||
749 | /* If no such queue is found, we'll use a DATA queue instead */ | |
750 | } | |
751 | ||
9794c64f LK |
752 | if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && |
753 | (mvm->queue_info[mvmsta->reserved_queue].status == | |
754 | IWL_MVM_QUEUE_RESERVED || | |
755 | mvm->queue_info[mvmsta->reserved_queue].status == | |
756 | IWL_MVM_QUEUE_INACTIVE)) { | |
24afba76 | 757 | queue = mvmsta->reserved_queue; |
9794c64f | 758 | mvm->queue_info[queue].reserved = true; |
24afba76 LK |
759 | IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); |
760 | } | |
761 | ||
762 | if (queue < 0) | |
9794c64f LK |
763 | queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, |
764 | IWL_MVM_DQA_MIN_DATA_QUEUE, | |
24afba76 | 765 | IWL_MVM_DQA_MAX_DATA_QUEUE); |
cf961e16 | 766 | |
9794c64f LK |
767 | /* |
768 | * Check if this queue is already allocated but inactive. | |
769 | * In such a case, we'll need to first free this queue before enabling | |
770 | * it again, so we'll mark it as reserved to make sure no new traffic | |
771 | * arrives on it | |
772 | */ | |
773 | if (queue > 0 && | |
774 | mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { | |
775 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; | |
776 | using_inactive_queue = true; | |
01796ff2 | 777 | same_sta = mvm->queue_info[queue].ra_sta_id == mvmsta->sta_id; |
9794c64f LK |
778 | IWL_DEBUG_TX_QUEUES(mvm, |
779 | "Re-assigning TXQ %d: sta_id=%d, tid=%d\n", | |
780 | queue, mvmsta->sta_id, tid); | |
781 | } | |
782 | ||
42db09c1 LK |
783 | /* No free queue - we'll have to share */ |
784 | if (queue <= 0) { | |
785 | queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); | |
786 | if (queue > 0) { | |
787 | shared_queue = true; | |
788 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; | |
789 | } | |
790 | } | |
791 | ||
cf961e16 LK |
792 | /* |
793 | * Mark TXQ as ready, even though it hasn't been fully configured yet, | |
794 | * to make sure no one else takes it. | |
795 | * This will allow avoiding re-acquiring the lock at the end of the | |
796 | * configuration. On error we'll mark it back as free. | |
797 | */ | |
42db09c1 | 798 | if ((queue > 0) && !shared_queue) |
cf961e16 | 799 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; |
24afba76 | 800 | |
d2515a99 | 801 | spin_unlock_bh(&mvm->queue_info_lock); |
24afba76 | 802 | |
42db09c1 LK |
803 | /* This shouldn't happen - out of queues */ |
804 | if (WARN_ON(queue <= 0)) { | |
805 | IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", | |
806 | tid, cfg.sta_id); | |
9f9af3d7 | 807 | return queue; |
42db09c1 | 808 | } |
24afba76 LK |
809 | |
810 | /* | |
811 | * Actual en/disablement of aggregations is through the ADD_STA HCMD, | |
812 | * but for configuring the SCD to send A-MPDUs we need to mark the queue | |
813 | * as aggregatable. | |
814 | * Mark all DATA queues as allowing to be aggregated at some point | |
815 | */ | |
d5216a28 LK |
816 | cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || |
817 | queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); | |
24afba76 | 818 | |
9794c64f LK |
819 | /* |
820 | * If this queue was previously inactive (idle) - we need to free it | |
821 | * first | |
822 | */ | |
823 | if (using_inactive_queue) { | |
01796ff2 SS |
824 | ret = iwl_mvm_free_inactive_queue(mvm, queue, same_sta); |
825 | if (ret) | |
9794c64f | 826 | return ret; |
9794c64f LK |
827 | } |
828 | ||
42db09c1 LK |
829 | IWL_DEBUG_TX_QUEUES(mvm, |
830 | "Allocating %squeue #%d to sta %d on tid %d\n", | |
831 | shared_queue ? "shared " : "", queue, | |
832 | mvmsta->sta_id, tid); | |
833 | ||
834 | if (shared_queue) { | |
835 | /* Disable any open aggs on this queue */ | |
836 | disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); | |
837 | ||
838 | if (disable_agg_tids) { | |
839 | IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", | |
840 | queue); | |
841 | iwl_mvm_invalidate_sta_queue(mvm, queue, | |
842 | disable_agg_tids, false); | |
843 | } | |
42db09c1 | 844 | } |
24afba76 LK |
845 | |
846 | ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); | |
dcfbd67b EG |
847 | inc_ssn = iwl_mvm_enable_txq(mvm, queue, mac_queue, |
848 | ssn, &cfg, wdg_timeout); | |
849 | if (inc_ssn) { | |
850 | ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; | |
851 | le16_add_cpu(&hdr->seq_ctrl, 0x10); | |
852 | } | |
24afba76 | 853 | |
58f2cc57 LK |
854 | /* |
855 | * Mark queue as shared in transport if shared | |
856 | * Note this has to be done after queue enablement because enablement | |
857 | * can also set this value, and there is no indication there to shared | |
858 | * queues | |
859 | */ | |
860 | if (shared_queue) | |
861 | iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); | |
862 | ||
24afba76 | 863 | spin_lock_bh(&mvmsta->lock); |
dcfbd67b EG |
864 | /* |
865 | * This looks racy, but it is not. We have only one packet for | |
866 | * this ra/tid in our Tx path since we stop the Qdisc when we | |
867 | * need to allocate a new TFD queue. | |
868 | */ | |
869 | if (inc_ssn) | |
870 | mvmsta->tid_data[tid].seq_number += 0x10; | |
24afba76 | 871 | mvmsta->tid_data[tid].txq_id = queue; |
9794c64f | 872 | mvmsta->tid_data[tid].is_tid_active = true; |
24afba76 | 873 | mvmsta->tfd_queue_msk |= BIT(queue); |
9794c64f | 874 | queue_state = mvmsta->tid_data[tid].state; |
24afba76 LK |
875 | |
876 | if (mvmsta->reserved_queue == queue) | |
877 | mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; | |
878 | spin_unlock_bh(&mvmsta->lock); | |
879 | ||
42db09c1 LK |
880 | if (!shared_queue) { |
881 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); | |
882 | if (ret) | |
883 | goto out_err; | |
cf961e16 | 884 | |
42db09c1 LK |
885 | /* If we need to re-enable aggregations... */ |
886 | if (queue_state == IWL_AGG_ON) { | |
887 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); | |
888 | if (ret) | |
889 | goto out_err; | |
890 | } | |
58f2cc57 LK |
891 | } else { |
892 | /* Redirect queue, if needed */ | |
893 | ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, ac, ssn, | |
894 | wdg_timeout, false); | |
895 | if (ret) | |
896 | goto out_err; | |
42db09c1 | 897 | } |
9794c64f | 898 | |
42db09c1 | 899 | return 0; |
cf961e16 LK |
900 | |
901 | out_err: | |
902 | iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0); | |
903 | ||
904 | return ret; | |
24afba76 LK |
905 | } |
906 | ||
19aefa45 LK |
907 | static void iwl_mvm_change_queue_owner(struct iwl_mvm *mvm, int queue) |
908 | { | |
909 | struct iwl_scd_txq_cfg_cmd cmd = { | |
910 | .scd_queue = queue, | |
911 | .action = SCD_CFG_UPDATE_QUEUE_TID, | |
912 | }; | |
19aefa45 LK |
913 | int tid; |
914 | unsigned long tid_bitmap; | |
915 | int ret; | |
916 | ||
917 | lockdep_assert_held(&mvm->mutex); | |
918 | ||
bb49701b SS |
919 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
920 | return; | |
921 | ||
19aefa45 | 922 | spin_lock_bh(&mvm->queue_info_lock); |
19aefa45 LK |
923 | tid_bitmap = mvm->queue_info[queue].tid_bitmap; |
924 | spin_unlock_bh(&mvm->queue_info_lock); | |
925 | ||
926 | if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) | |
927 | return; | |
928 | ||
929 | /* Find any TID for queue */ | |
930 | tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); | |
931 | cmd.tid = tid; | |
932 | cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; | |
933 | ||
934 | ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); | |
341ca402 | 935 | if (ret) { |
19aefa45 LK |
936 | IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", |
937 | queue, ret); | |
341ca402 LK |
938 | return; |
939 | } | |
940 | ||
941 | spin_lock_bh(&mvm->queue_info_lock); | |
942 | mvm->queue_info[queue].txq_tid = tid; | |
943 | spin_unlock_bh(&mvm->queue_info_lock); | |
944 | IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", | |
945 | queue, tid); | |
19aefa45 LK |
946 | } |
947 | ||
9f9af3d7 LK |
948 | static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) |
949 | { | |
950 | struct ieee80211_sta *sta; | |
951 | struct iwl_mvm_sta *mvmsta; | |
806911da | 952 | u8 sta_id; |
9f9af3d7 LK |
953 | int tid = -1; |
954 | unsigned long tid_bitmap; | |
955 | unsigned int wdg_timeout; | |
956 | int ssn; | |
957 | int ret = true; | |
958 | ||
bb49701b SS |
959 | /* queue sharing is disabled on new TX path */ |
960 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) | |
961 | return; | |
962 | ||
9f9af3d7 LK |
963 | lockdep_assert_held(&mvm->mutex); |
964 | ||
965 | spin_lock_bh(&mvm->queue_info_lock); | |
966 | sta_id = mvm->queue_info[queue].ra_sta_id; | |
967 | tid_bitmap = mvm->queue_info[queue].tid_bitmap; | |
968 | spin_unlock_bh(&mvm->queue_info_lock); | |
969 | ||
970 | /* Find TID for queue, and make sure it is the only one on the queue */ | |
971 | tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); | |
972 | if (tid_bitmap != BIT(tid)) { | |
973 | IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", | |
974 | queue, tid_bitmap); | |
975 | return; | |
976 | } | |
977 | ||
978 | IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, | |
979 | tid); | |
980 | ||
981 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
982 | lockdep_is_held(&mvm->mutex)); | |
983 | ||
984 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) | |
985 | return; | |
986 | ||
987 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
988 | wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); | |
989 | ||
990 | ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); | |
991 | ||
992 | ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, | |
993 | tid_to_mac80211_ac[tid], ssn, | |
994 | wdg_timeout, true); | |
995 | if (ret) { | |
996 | IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); | |
997 | return; | |
998 | } | |
999 | ||
1000 | /* If aggs should be turned back on - do it */ | |
1001 | if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { | |
9cd70e80 | 1002 | struct iwl_mvm_add_sta_cmd cmd = {0}; |
9f9af3d7 LK |
1003 | |
1004 | mvmsta->tid_disable_agg &= ~BIT(tid); | |
1005 | ||
1006 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
1007 | cmd.sta_id = mvmsta->sta_id; | |
1008 | cmd.add_modify = STA_MODE_MODIFY; | |
1009 | cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; | |
1010 | cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); | |
1011 | cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); | |
1012 | ||
1013 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, | |
1014 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
1015 | if (!ret) { | |
1016 | IWL_DEBUG_TX_QUEUES(mvm, | |
1017 | "TXQ #%d is now aggregated again\n", | |
1018 | queue); | |
1019 | ||
1020 | /* Mark queue intenally as aggregating again */ | |
1021 | iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | spin_lock_bh(&mvm->queue_info_lock); | |
1026 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; | |
1027 | spin_unlock_bh(&mvm->queue_info_lock); | |
1028 | } | |
1029 | ||
24afba76 LK |
1030 | static inline u8 iwl_mvm_tid_to_ac_queue(int tid) |
1031 | { | |
1032 | if (tid == IWL_MAX_TID_COUNT) | |
1033 | return IEEE80211_AC_VO; /* MGMT */ | |
1034 | ||
1035 | return tid_to_mac80211_ac[tid]; | |
1036 | } | |
1037 | ||
1038 | static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, | |
1039 | struct ieee80211_sta *sta, int tid) | |
1040 | { | |
1041 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
1042 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; | |
1043 | struct sk_buff *skb; | |
1044 | struct ieee80211_hdr *hdr; | |
1045 | struct sk_buff_head deferred_tx; | |
1046 | u8 mac_queue; | |
1047 | bool no_queue = false; /* Marks if there is a problem with the queue */ | |
1048 | u8 ac; | |
1049 | ||
1050 | lockdep_assert_held(&mvm->mutex); | |
1051 | ||
1052 | skb = skb_peek(&tid_data->deferred_tx_frames); | |
1053 | if (!skb) | |
1054 | return; | |
1055 | hdr = (void *)skb->data; | |
1056 | ||
1057 | ac = iwl_mvm_tid_to_ac_queue(tid); | |
1058 | mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; | |
1059 | ||
6862fcee | 1060 | if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE && |
24afba76 LK |
1061 | iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { |
1062 | IWL_ERR(mvm, | |
1063 | "Can't alloc TXQ for sta %d tid %d - dropping frame\n", | |
1064 | mvmsta->sta_id, tid); | |
1065 | ||
1066 | /* | |
1067 | * Mark queue as problematic so later the deferred traffic is | |
1068 | * freed, as we can do nothing with it | |
1069 | */ | |
1070 | no_queue = true; | |
1071 | } | |
1072 | ||
1073 | __skb_queue_head_init(&deferred_tx); | |
1074 | ||
d2515a99 LK |
1075 | /* Disable bottom-halves when entering TX path */ |
1076 | local_bh_disable(); | |
24afba76 LK |
1077 | spin_lock(&mvmsta->lock); |
1078 | skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); | |
ad5de737 | 1079 | mvmsta->deferred_traffic_tid_map &= ~BIT(tid); |
24afba76 LK |
1080 | spin_unlock(&mvmsta->lock); |
1081 | ||
24afba76 LK |
1082 | while ((skb = __skb_dequeue(&deferred_tx))) |
1083 | if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) | |
1084 | ieee80211_free_txskb(mvm->hw, skb); | |
1085 | local_bh_enable(); | |
1086 | ||
1087 | /* Wake queue */ | |
1088 | iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); | |
1089 | } | |
1090 | ||
1091 | void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) | |
1092 | { | |
1093 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, | |
1094 | add_stream_wk); | |
1095 | struct ieee80211_sta *sta; | |
1096 | struct iwl_mvm_sta *mvmsta; | |
1097 | unsigned long deferred_tid_traffic; | |
9f9af3d7 | 1098 | int queue, sta_id, tid; |
24afba76 | 1099 | |
9794c64f LK |
1100 | /* Check inactivity of queues */ |
1101 | iwl_mvm_inactivity_check(mvm); | |
1102 | ||
24afba76 LK |
1103 | mutex_lock(&mvm->mutex); |
1104 | ||
34e10860 SS |
1105 | /* No queue reconfiguration in TVQM mode */ |
1106 | if (iwl_mvm_has_new_tx_api(mvm)) | |
1107 | goto alloc_queues; | |
1108 | ||
9f9af3d7 | 1109 | /* Reconfigure queues requiring reconfiguation */ |
34e10860 | 1110 | for (queue = 0; queue < ARRAY_SIZE(mvm->queue_info); queue++) { |
9f9af3d7 | 1111 | bool reconfig; |
19aefa45 | 1112 | bool change_owner; |
9f9af3d7 LK |
1113 | |
1114 | spin_lock_bh(&mvm->queue_info_lock); | |
1115 | reconfig = (mvm->queue_info[queue].status == | |
1116 | IWL_MVM_QUEUE_RECONFIGURING); | |
19aefa45 LK |
1117 | |
1118 | /* | |
1119 | * We need to take into account a situation in which a TXQ was | |
1120 | * allocated to TID x, and then turned shared by adding TIDs y | |
1121 | * and z. If TID x becomes inactive and is removed from the TXQ, | |
1122 | * ownership must be given to one of the remaining TIDs. | |
1123 | * This is mainly because if TID x continues - a new queue can't | |
1124 | * be allocated for it as long as it is an owner of another TXQ. | |
1125 | */ | |
1126 | change_owner = !(mvm->queue_info[queue].tid_bitmap & | |
1127 | BIT(mvm->queue_info[queue].txq_tid)) && | |
1128 | (mvm->queue_info[queue].status == | |
1129 | IWL_MVM_QUEUE_SHARED); | |
9f9af3d7 LK |
1130 | spin_unlock_bh(&mvm->queue_info_lock); |
1131 | ||
1132 | if (reconfig) | |
1133 | iwl_mvm_unshare_queue(mvm, queue); | |
19aefa45 LK |
1134 | else if (change_owner) |
1135 | iwl_mvm_change_queue_owner(mvm, queue); | |
9f9af3d7 LK |
1136 | } |
1137 | ||
34e10860 | 1138 | alloc_queues: |
24afba76 LK |
1139 | /* Go over all stations with deferred traffic */ |
1140 | for_each_set_bit(sta_id, mvm->sta_deferred_frames, | |
1141 | IWL_MVM_STATION_COUNT) { | |
1142 | clear_bit(sta_id, mvm->sta_deferred_frames); | |
1143 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1144 | lockdep_is_held(&mvm->mutex)); | |
1145 | if (IS_ERR_OR_NULL(sta)) | |
1146 | continue; | |
1147 | ||
1148 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
1149 | deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; | |
1150 | ||
1151 | for_each_set_bit(tid, &deferred_tid_traffic, | |
1152 | IWL_MAX_TID_COUNT + 1) | |
1153 | iwl_mvm_tx_deferred_stream(mvm, sta, tid); | |
1154 | } | |
1155 | ||
1156 | mutex_unlock(&mvm->mutex); | |
1157 | } | |
1158 | ||
1159 | static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, | |
d5216a28 LK |
1160 | struct ieee80211_sta *sta, |
1161 | enum nl80211_iftype vif_type) | |
24afba76 LK |
1162 | { |
1163 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
1164 | int queue; | |
01796ff2 | 1165 | bool using_inactive_queue = false, same_sta = false; |
24afba76 | 1166 | |
396952ee SS |
1167 | /* queue reserving is disabled on new TX path */ |
1168 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) | |
1169 | return 0; | |
1170 | ||
9794c64f LK |
1171 | /* |
1172 | * Check for inactive queues, so we don't reach a situation where we | |
1173 | * can't add a STA due to a shortage in queues that doesn't really exist | |
1174 | */ | |
1175 | iwl_mvm_inactivity_check(mvm); | |
1176 | ||
24afba76 LK |
1177 | spin_lock_bh(&mvm->queue_info_lock); |
1178 | ||
1179 | /* Make sure we have free resources for this STA */ | |
d5216a28 LK |
1180 | if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && |
1181 | !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount && | |
cf961e16 LK |
1182 | (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == |
1183 | IWL_MVM_QUEUE_FREE)) | |
d5216a28 LK |
1184 | queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; |
1185 | else | |
9794c64f LK |
1186 | queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, |
1187 | IWL_MVM_DQA_MIN_DATA_QUEUE, | |
d5216a28 | 1188 | IWL_MVM_DQA_MAX_DATA_QUEUE); |
24afba76 LK |
1189 | if (queue < 0) { |
1190 | spin_unlock_bh(&mvm->queue_info_lock); | |
1191 | IWL_ERR(mvm, "No available queues for new station\n"); | |
1192 | return -ENOSPC; | |
01796ff2 SS |
1193 | } else if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_INACTIVE) { |
1194 | /* | |
1195 | * If this queue is already allocated but inactive we'll need to | |
1196 | * first free this queue before enabling it again, we'll mark | |
1197 | * it as reserved to make sure no new traffic arrives on it | |
1198 | */ | |
1199 | using_inactive_queue = true; | |
1200 | same_sta = mvm->queue_info[queue].ra_sta_id == mvmsta->sta_id; | |
24afba76 | 1201 | } |
cf961e16 | 1202 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; |
24afba76 LK |
1203 | |
1204 | spin_unlock_bh(&mvm->queue_info_lock); | |
1205 | ||
1206 | mvmsta->reserved_queue = queue; | |
1207 | ||
01796ff2 SS |
1208 | if (using_inactive_queue) |
1209 | iwl_mvm_free_inactive_queue(mvm, queue, same_sta); | |
1210 | ||
24afba76 LK |
1211 | IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", |
1212 | queue, mvmsta->sta_id); | |
1213 | ||
1214 | return 0; | |
1215 | } | |
1216 | ||
8d98ae6e LK |
1217 | /* |
1218 | * In DQA mode, after a HW restart the queues should be allocated as before, in | |
1219 | * order to avoid race conditions when there are shared queues. This function | |
1220 | * does the re-mapping and queue allocation. | |
1221 | * | |
1222 | * Note that re-enabling aggregations isn't done in this function. | |
1223 | */ | |
1224 | static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, | |
1225 | struct iwl_mvm_sta *mvm_sta) | |
1226 | { | |
1227 | unsigned int wdg_timeout = | |
1228 | iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); | |
1229 | int i; | |
1230 | struct iwl_trans_txq_scd_cfg cfg = { | |
1231 | .sta_id = mvm_sta->sta_id, | |
1232 | .frame_limit = IWL_FRAME_LIMIT, | |
1233 | }; | |
1234 | ||
03c902bf JB |
1235 | /* Make sure reserved queue is still marked as such (if allocated) */ |
1236 | if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) | |
1237 | mvm->queue_info[mvm_sta->reserved_queue].status = | |
1238 | IWL_MVM_QUEUE_RESERVED; | |
8d98ae6e LK |
1239 | |
1240 | for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { | |
1241 | struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; | |
1242 | int txq_id = tid_data->txq_id; | |
1243 | int ac; | |
1244 | u8 mac_queue; | |
1245 | ||
6862fcee | 1246 | if (txq_id == IWL_MVM_INVALID_QUEUE) |
8d98ae6e LK |
1247 | continue; |
1248 | ||
1249 | skb_queue_head_init(&tid_data->deferred_tx_frames); | |
1250 | ||
1251 | ac = tid_to_mac80211_ac[i]; | |
1252 | mac_queue = mvm_sta->vif->hw_queue[ac]; | |
1253 | ||
310181ec SS |
1254 | if (iwl_mvm_has_new_tx_api(mvm)) { |
1255 | IWL_DEBUG_TX_QUEUES(mvm, | |
1256 | "Re-mapping sta %d tid %d\n", | |
1257 | mvm_sta->sta_id, i); | |
1258 | txq_id = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, | |
1259 | mvm_sta->sta_id, | |
1260 | i, wdg_timeout); | |
1261 | tid_data->txq_id = txq_id; | |
5d39051a LK |
1262 | |
1263 | /* | |
1264 | * Since we don't set the seq number after reset, and HW | |
1265 | * sets it now, FW reset will cause the seq num to start | |
1266 | * at 0 again, so driver will need to update it | |
1267 | * internally as well, so it keeps in sync with real val | |
1268 | */ | |
1269 | tid_data->seq_number = 0; | |
310181ec SS |
1270 | } else { |
1271 | u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); | |
8d98ae6e | 1272 | |
310181ec | 1273 | cfg.tid = i; |
cf6c6ea3 | 1274 | cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); |
310181ec SS |
1275 | cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || |
1276 | txq_id == | |
1277 | IWL_MVM_DQA_BSS_CLIENT_QUEUE); | |
8d98ae6e | 1278 | |
310181ec SS |
1279 | IWL_DEBUG_TX_QUEUES(mvm, |
1280 | "Re-mapping sta %d tid %d to queue %d\n", | |
1281 | mvm_sta->sta_id, i, txq_id); | |
1282 | ||
1283 | iwl_mvm_enable_txq(mvm, txq_id, mac_queue, seq, &cfg, | |
1284 | wdg_timeout); | |
34e10860 | 1285 | mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; |
310181ec | 1286 | } |
8d98ae6e | 1287 | } |
8d98ae6e LK |
1288 | } |
1289 | ||
732d06e9 ST |
1290 | static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, |
1291 | struct iwl_mvm_int_sta *sta, | |
1292 | const u8 *addr, | |
1293 | u16 mac_id, u16 color) | |
1294 | { | |
1295 | struct iwl_mvm_add_sta_cmd cmd; | |
1296 | int ret; | |
3f497de9 | 1297 | u32 status = ADD_STA_SUCCESS; |
732d06e9 ST |
1298 | |
1299 | lockdep_assert_held(&mvm->mutex); | |
1300 | ||
1301 | memset(&cmd, 0, sizeof(cmd)); | |
1302 | cmd.sta_id = sta->sta_id; | |
1303 | cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, | |
1304 | color)); | |
1305 | if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) | |
1306 | cmd.station_type = sta->type; | |
1307 | ||
1308 | if (!iwl_mvm_has_new_tx_api(mvm)) | |
1309 | cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); | |
1310 | cmd.tid_disable_tx = cpu_to_le16(0xffff); | |
1311 | ||
1312 | if (addr) | |
1313 | memcpy(cmd.addr, addr, ETH_ALEN); | |
1314 | ||
1315 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, | |
1316 | iwl_mvm_add_sta_cmd_size(mvm), | |
1317 | &cmd, &status); | |
1318 | if (ret) | |
1319 | return ret; | |
1320 | ||
1321 | switch (status & IWL_ADD_STA_STATUS_MASK) { | |
1322 | case ADD_STA_SUCCESS: | |
1323 | IWL_DEBUG_INFO(mvm, "Internal station added.\n"); | |
1324 | return 0; | |
1325 | default: | |
1326 | ret = -EIO; | |
1327 | IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", | |
1328 | status); | |
1329 | break; | |
1330 | } | |
1331 | return ret; | |
1332 | } | |
1333 | ||
8ca151b5 JB |
1334 | int iwl_mvm_add_sta(struct iwl_mvm *mvm, |
1335 | struct ieee80211_vif *vif, | |
1336 | struct ieee80211_sta *sta) | |
1337 | { | |
1338 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 1339 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
a571f5f6 | 1340 | struct iwl_mvm_rxq_dup_data *dup_data; |
8ca151b5 | 1341 | int i, ret, sta_id; |
732d06e9 ST |
1342 | bool sta_update = false; |
1343 | unsigned int sta_flags = 0; | |
8ca151b5 JB |
1344 | |
1345 | lockdep_assert_held(&mvm->mutex); | |
1346 | ||
1347 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) | |
b92e661b EP |
1348 | sta_id = iwl_mvm_find_free_sta_id(mvm, |
1349 | ieee80211_vif_type_p2p(vif)); | |
8ca151b5 JB |
1350 | else |
1351 | sta_id = mvm_sta->sta_id; | |
1352 | ||
0ae98812 | 1353 | if (sta_id == IWL_MVM_INVALID_STA) |
8ca151b5 JB |
1354 | return -ENOSPC; |
1355 | ||
1356 | spin_lock_init(&mvm_sta->lock); | |
1357 | ||
c8f54701 JB |
1358 | /* if this is a HW restart re-alloc existing queues */ |
1359 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
732d06e9 ST |
1360 | struct iwl_mvm_int_sta tmp_sta = { |
1361 | .sta_id = sta_id, | |
1362 | .type = mvm_sta->sta_type, | |
1363 | }; | |
1364 | ||
1365 | /* | |
1366 | * First add an empty station since allocating | |
1367 | * a queue requires a valid station | |
1368 | */ | |
1369 | ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, | |
1370 | mvmvif->id, mvmvif->color); | |
1371 | if (ret) | |
1372 | goto err; | |
1373 | ||
8d98ae6e | 1374 | iwl_mvm_realloc_queues_after_restart(mvm, mvm_sta); |
732d06e9 ST |
1375 | sta_update = true; |
1376 | sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; | |
8d98ae6e LK |
1377 | goto update_fw; |
1378 | } | |
1379 | ||
8ca151b5 JB |
1380 | mvm_sta->sta_id = sta_id; |
1381 | mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, | |
1382 | mvmvif->color); | |
1383 | mvm_sta->vif = vif; | |
a58bb468 LK |
1384 | if (!mvm->trans->cfg->gen2) |
1385 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
1386 | else | |
1387 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; | |
9ee718aa EL |
1388 | mvm_sta->tx_protection = 0; |
1389 | mvm_sta->tt_tx_protection = false; | |
ced19f26 | 1390 | mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; |
8ca151b5 JB |
1391 | |
1392 | /* HW restart, don't assume the memory has been zeroed */ | |
69191afe | 1393 | mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ |
8ca151b5 | 1394 | mvm_sta->tfd_queue_msk = 0; |
a0f6bf2a | 1395 | |
6d9d32b8 | 1396 | /* for HW restart - reset everything but the sequence number */ |
24afba76 | 1397 | for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { |
6d9d32b8 JB |
1398 | u16 seq = mvm_sta->tid_data[i].seq_number; |
1399 | memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); | |
1400 | mvm_sta->tid_data[i].seq_number = seq; | |
24afba76 | 1401 | |
24afba76 LK |
1402 | /* |
1403 | * Mark all queues for this STA as unallocated and defer TX | |
1404 | * frames until the queue is allocated | |
1405 | */ | |
6862fcee | 1406 | mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; |
24afba76 | 1407 | skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); |
6d9d32b8 | 1408 | } |
24afba76 | 1409 | mvm_sta->deferred_traffic_tid_map = 0; |
efed6640 | 1410 | mvm_sta->agg_tids = 0; |
8ca151b5 | 1411 | |
a571f5f6 SS |
1412 | if (iwl_mvm_has_new_rx_api(mvm) && |
1413 | !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
92c4dca6 JB |
1414 | int q; |
1415 | ||
a571f5f6 | 1416 | dup_data = kcalloc(mvm->trans->num_rx_queues, |
92c4dca6 | 1417 | sizeof(*dup_data), GFP_KERNEL); |
a571f5f6 SS |
1418 | if (!dup_data) |
1419 | return -ENOMEM; | |
92c4dca6 JB |
1420 | /* |
1421 | * Initialize all the last_seq values to 0xffff which can never | |
1422 | * compare equal to the frame's seq_ctrl in the check in | |
1423 | * iwl_mvm_is_dup() since the lower 4 bits are the fragment | |
1424 | * number and fragmented packets don't reach that function. | |
1425 | * | |
1426 | * This thus allows receiving a packet with seqno 0 and the | |
1427 | * retry bit set as the very first packet on a new TID. | |
1428 | */ | |
1429 | for (q = 0; q < mvm->trans->num_rx_queues; q++) | |
1430 | memset(dup_data[q].last_seq, 0xff, | |
1431 | sizeof(dup_data[q].last_seq)); | |
a571f5f6 SS |
1432 | mvm_sta->dup_data = dup_data; |
1433 | } | |
1434 | ||
c8f54701 | 1435 | if (!iwl_mvm_has_new_tx_api(mvm)) { |
d5216a28 LK |
1436 | ret = iwl_mvm_reserve_sta_stream(mvm, sta, |
1437 | ieee80211_vif_type_p2p(vif)); | |
24afba76 LK |
1438 | if (ret) |
1439 | goto err; | |
1440 | } | |
1441 | ||
8d98ae6e | 1442 | update_fw: |
732d06e9 | 1443 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); |
8ca151b5 | 1444 | if (ret) |
a0f6bf2a | 1445 | goto err; |
8ca151b5 | 1446 | |
9e848010 JB |
1447 | if (vif->type == NL80211_IFTYPE_STATION) { |
1448 | if (!sta->tdls) { | |
0ae98812 | 1449 | WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); |
9e848010 JB |
1450 | mvmvif->ap_sta_id = sta_id; |
1451 | } else { | |
0ae98812 | 1452 | WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); |
9e848010 JB |
1453 | } |
1454 | } | |
8ca151b5 JB |
1455 | |
1456 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); | |
1457 | ||
1458 | return 0; | |
a0f6bf2a AN |
1459 | |
1460 | err: | |
a0f6bf2a | 1461 | return ret; |
8ca151b5 JB |
1462 | } |
1463 | ||
1464 | int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, | |
1465 | bool drain) | |
1466 | { | |
f9dc0004 | 1467 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
1468 | int ret; |
1469 | u32 status; | |
1470 | ||
1471 | lockdep_assert_held(&mvm->mutex); | |
1472 | ||
1473 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
1474 | cmd.sta_id = mvmsta->sta_id; | |
1475 | cmd.add_modify = STA_MODE_MODIFY; | |
1476 | cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; | |
1477 | cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); | |
1478 | ||
1479 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
1480 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
1481 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 1482 | &cmd, &status); |
8ca151b5 JB |
1483 | if (ret) |
1484 | return ret; | |
1485 | ||
837c4da9 | 1486 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
1487 | case ADD_STA_SUCCESS: |
1488 | IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", | |
1489 | mvmsta->sta_id); | |
1490 | break; | |
1491 | default: | |
1492 | ret = -EIO; | |
1493 | IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", | |
1494 | mvmsta->sta_id); | |
1495 | break; | |
1496 | } | |
1497 | ||
1498 | return ret; | |
1499 | } | |
1500 | ||
1501 | /* | |
1502 | * Remove a station from the FW table. Before sending the command to remove | |
1503 | * the station validate that the station is indeed known to the driver (sanity | |
1504 | * only). | |
1505 | */ | |
1506 | static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) | |
1507 | { | |
1508 | struct ieee80211_sta *sta; | |
1509 | struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { | |
1510 | .sta_id = sta_id, | |
1511 | }; | |
1512 | int ret; | |
1513 | ||
1514 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1515 | lockdep_is_held(&mvm->mutex)); | |
1516 | ||
1517 | /* Note: internal stations are marked as error values */ | |
1518 | if (!sta) { | |
1519 | IWL_ERR(mvm, "Invalid station id\n"); | |
1520 | return -EINVAL; | |
1521 | } | |
1522 | ||
a1022927 | 1523 | ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, |
8ca151b5 JB |
1524 | sizeof(rm_sta_cmd), &rm_sta_cmd); |
1525 | if (ret) { | |
1526 | IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); | |
1527 | return ret; | |
1528 | } | |
1529 | ||
1530 | return 0; | |
1531 | } | |
1532 | ||
24afba76 LK |
1533 | static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, |
1534 | struct ieee80211_vif *vif, | |
1535 | struct iwl_mvm_sta *mvm_sta) | |
1536 | { | |
1537 | int ac; | |
1538 | int i; | |
1539 | ||
1540 | lockdep_assert_held(&mvm->mutex); | |
1541 | ||
1542 | for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { | |
6862fcee | 1543 | if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) |
24afba76 LK |
1544 | continue; |
1545 | ||
1546 | ac = iwl_mvm_tid_to_ac_queue(i); | |
1547 | iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, | |
1548 | vif->hw_queue[ac], i, 0); | |
6862fcee | 1549 | mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; |
24afba76 LK |
1550 | } |
1551 | } | |
1552 | ||
d6d517b7 SS |
1553 | int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, |
1554 | struct iwl_mvm_sta *mvm_sta) | |
1555 | { | |
bec9522a | 1556 | int i; |
d6d517b7 SS |
1557 | |
1558 | for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { | |
1559 | u16 txq_id; | |
bec9522a | 1560 | int ret; |
d6d517b7 SS |
1561 | |
1562 | spin_lock_bh(&mvm_sta->lock); | |
1563 | txq_id = mvm_sta->tid_data[i].txq_id; | |
1564 | spin_unlock_bh(&mvm_sta->lock); | |
1565 | ||
1566 | if (txq_id == IWL_MVM_INVALID_QUEUE) | |
1567 | continue; | |
1568 | ||
1569 | ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); | |
1570 | if (ret) | |
bec9522a | 1571 | return ret; |
d6d517b7 SS |
1572 | } |
1573 | ||
bec9522a | 1574 | return 0; |
d6d517b7 SS |
1575 | } |
1576 | ||
8ca151b5 JB |
1577 | int iwl_mvm_rm_sta(struct iwl_mvm *mvm, |
1578 | struct ieee80211_vif *vif, | |
1579 | struct ieee80211_sta *sta) | |
1580 | { | |
1581 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 1582 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
94c3e614 | 1583 | u8 sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1584 | int ret; |
1585 | ||
1586 | lockdep_assert_held(&mvm->mutex); | |
1587 | ||
a571f5f6 SS |
1588 | if (iwl_mvm_has_new_rx_api(mvm)) |
1589 | kfree(mvm_sta->dup_data); | |
1590 | ||
c8f54701 JB |
1591 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
1592 | if (ret) | |
1593 | return ret; | |
d6d517b7 | 1594 | |
c8f54701 JB |
1595 | /* flush its queues here since we are freeing mvm_sta */ |
1596 | ret = iwl_mvm_flush_sta(mvm, mvm_sta, false, 0); | |
1597 | if (ret) | |
1598 | return ret; | |
1599 | if (iwl_mvm_has_new_tx_api(mvm)) { | |
1600 | ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); | |
1601 | } else { | |
1602 | u32 q_mask = mvm_sta->tfd_queue_msk; | |
56214749 | 1603 | |
c8f54701 JB |
1604 | ret = iwl_trans_wait_tx_queues_empty(mvm->trans, |
1605 | q_mask); | |
1606 | } | |
1607 | if (ret) | |
1608 | return ret; | |
1609 | ||
1610 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); | |
a0315dea | 1611 | |
c8f54701 JB |
1612 | iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); |
1613 | ||
1614 | /* If there is a TXQ still marked as reserved - free it */ | |
1615 | if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { | |
1616 | u8 reserved_txq = mvm_sta->reserved_queue; | |
1617 | enum iwl_mvm_queue_status *status; | |
a0315dea | 1618 | |
c8f54701 JB |
1619 | /* |
1620 | * If no traffic has gone through the reserved TXQ - it | |
1621 | * is still marked as IWL_MVM_QUEUE_RESERVED, and | |
1622 | * should be manually marked as free again | |
1623 | */ | |
1624 | spin_lock_bh(&mvm->queue_info_lock); | |
1625 | status = &mvm->queue_info[reserved_txq].status; | |
1626 | if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && | |
1627 | (*status != IWL_MVM_QUEUE_FREE), | |
1628 | "sta_id %d reserved txq %d status %d", | |
1629 | sta_id, reserved_txq, *status)) { | |
a0315dea | 1630 | spin_unlock_bh(&mvm->queue_info_lock); |
c8f54701 | 1631 | return -EINVAL; |
a0315dea LK |
1632 | } |
1633 | ||
c8f54701 JB |
1634 | *status = IWL_MVM_QUEUE_FREE; |
1635 | spin_unlock_bh(&mvm->queue_info_lock); | |
1636 | } | |
1637 | ||
1638 | if (vif->type == NL80211_IFTYPE_STATION && | |
1639 | mvmvif->ap_sta_id == sta_id) { | |
1640 | /* if associated - we can't remove the AP STA now */ | |
1641 | if (vif->bss_conf.assoc) | |
1642 | return ret; | |
8ca151b5 | 1643 | |
c8f54701 JB |
1644 | /* unassoc - go ahead - remove the AP STA now */ |
1645 | mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; | |
37577fe2 | 1646 | |
c8f54701 JB |
1647 | /* clear d0i3_ap_sta_id if no longer relevant */ |
1648 | if (mvm->d0i3_ap_sta_id == sta_id) | |
1649 | mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; | |
8ca151b5 JB |
1650 | } |
1651 | ||
1d3c3f63 AN |
1652 | /* |
1653 | * This shouldn't happen - the TDLS channel switch should be canceled | |
1654 | * before the STA is removed. | |
1655 | */ | |
94c3e614 | 1656 | if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { |
0ae98812 | 1657 | mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; |
1d3c3f63 AN |
1658 | cancel_delayed_work(&mvm->tdls_cs.dwork); |
1659 | } | |
1660 | ||
e3d4bc8c EG |
1661 | /* |
1662 | * Make sure that the tx response code sees the station as -EBUSY and | |
1663 | * calls the drain worker. | |
1664 | */ | |
1665 | spin_lock_bh(&mvm_sta->lock); | |
c8f54701 | 1666 | spin_unlock_bh(&mvm_sta->lock); |
94c3e614 | 1667 | |
c8f54701 JB |
1668 | ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); |
1669 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); | |
8ca151b5 JB |
1670 | |
1671 | return ret; | |
1672 | } | |
1673 | ||
1674 | int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, | |
1675 | struct ieee80211_vif *vif, | |
1676 | u8 sta_id) | |
1677 | { | |
1678 | int ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
1679 | ||
1680 | lockdep_assert_held(&mvm->mutex); | |
1681 | ||
c531c771 | 1682 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 JB |
1683 | return ret; |
1684 | } | |
1685 | ||
0e39eb03 CRI |
1686 | int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, |
1687 | struct iwl_mvm_int_sta *sta, | |
ced19f26 SS |
1688 | u32 qmask, enum nl80211_iftype iftype, |
1689 | enum iwl_sta_type type) | |
8ca151b5 JB |
1690 | { |
1691 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
b92e661b | 1692 | sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); |
0ae98812 | 1693 | if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) |
8ca151b5 JB |
1694 | return -ENOSPC; |
1695 | } | |
1696 | ||
1697 | sta->tfd_queue_msk = qmask; | |
ced19f26 | 1698 | sta->type = type; |
8ca151b5 JB |
1699 | |
1700 | /* put a non-NULL value so iterating over the stations won't stop */ | |
1701 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); | |
1702 | return 0; | |
1703 | } | |
1704 | ||
26d6c16b | 1705 | void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) |
8ca151b5 | 1706 | { |
c531c771 | 1707 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); |
8ca151b5 | 1708 | memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); |
0ae98812 | 1709 | sta->sta_id = IWL_MVM_INVALID_STA; |
8ca151b5 JB |
1710 | } |
1711 | ||
b13f43a4 EG |
1712 | static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 *queue, |
1713 | u8 sta_id, u8 fifo) | |
8ca151b5 | 1714 | { |
4cf677fd EG |
1715 | unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? |
1716 | mvm->cfg->base_params->wd_timeout : | |
1717 | IWL_WATCHDOG_DISABLED; | |
8ca151b5 | 1718 | |
310181ec | 1719 | if (iwl_mvm_has_new_tx_api(mvm)) { |
b13f43a4 EG |
1720 | int tvqm_queue = |
1721 | iwl_mvm_tvqm_enable_txq(mvm, *queue, sta_id, | |
1722 | IWL_MAX_TID_COUNT, | |
1723 | wdg_timeout); | |
1724 | *queue = tvqm_queue; | |
c8f54701 | 1725 | } else { |
28d0793e | 1726 | struct iwl_trans_txq_scd_cfg cfg = { |
b13f43a4 EG |
1727 | .fifo = fifo, |
1728 | .sta_id = sta_id, | |
28d0793e LK |
1729 | .tid = IWL_MAX_TID_COUNT, |
1730 | .aggregate = false, | |
1731 | .frame_limit = IWL_FRAME_LIMIT, | |
1732 | }; | |
1733 | ||
b13f43a4 | 1734 | iwl_mvm_enable_txq(mvm, *queue, *queue, 0, &cfg, wdg_timeout); |
28d0793e | 1735 | } |
c5a719ee | 1736 | } |
28d0793e | 1737 | |
c5a719ee SS |
1738 | int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) |
1739 | { | |
1740 | int ret; | |
1741 | ||
1742 | lockdep_assert_held(&mvm->mutex); | |
8ca151b5 | 1743 | |
c5a719ee SS |
1744 | /* Allocate aux station and assign to it the aux queue */ |
1745 | ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), | |
ced19f26 SS |
1746 | NL80211_IFTYPE_UNSPECIFIED, |
1747 | IWL_STA_AUX_ACTIVITY); | |
8ca151b5 | 1748 | if (ret) |
c5a719ee SS |
1749 | return ret; |
1750 | ||
1751 | /* Map Aux queue to fifo - needs to happen before adding Aux station */ | |
1752 | if (!iwl_mvm_has_new_tx_api(mvm)) | |
b13f43a4 EG |
1753 | iwl_mvm_enable_aux_snif_queue(mvm, &mvm->aux_queue, |
1754 | mvm->aux_sta.sta_id, | |
1755 | IWL_MVM_TX_FIFO_MCAST); | |
c5a719ee SS |
1756 | |
1757 | ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, | |
1758 | MAC_INDEX_AUX, 0); | |
1759 | if (ret) { | |
8ca151b5 | 1760 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); |
c5a719ee SS |
1761 | return ret; |
1762 | } | |
1763 | ||
1764 | /* | |
1765 | * For a000 firmware and on we cannot add queue to a station unknown | |
1766 | * to firmware so enable queue here - after the station was added | |
1767 | */ | |
1768 | if (iwl_mvm_has_new_tx_api(mvm)) | |
b13f43a4 EG |
1769 | iwl_mvm_enable_aux_snif_queue(mvm, &mvm->aux_queue, |
1770 | mvm->aux_sta.sta_id, | |
1771 | IWL_MVM_TX_FIFO_MCAST); | |
c5a719ee SS |
1772 | |
1773 | return 0; | |
8ca151b5 JB |
1774 | } |
1775 | ||
0e39eb03 CRI |
1776 | int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
1777 | { | |
1778 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
b13f43a4 | 1779 | int ret; |
0e39eb03 CRI |
1780 | |
1781 | lockdep_assert_held(&mvm->mutex); | |
b13f43a4 EG |
1782 | |
1783 | /* Map snif queue to fifo - must happen before adding snif station */ | |
1784 | if (!iwl_mvm_has_new_tx_api(mvm)) | |
1785 | iwl_mvm_enable_aux_snif_queue(mvm, &mvm->snif_queue, | |
1786 | mvm->snif_sta.sta_id, | |
1787 | IWL_MVM_TX_FIFO_BE); | |
1788 | ||
1789 | ret = iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, | |
0e39eb03 | 1790 | mvmvif->id, 0); |
b13f43a4 EG |
1791 | if (ret) |
1792 | return ret; | |
1793 | ||
1794 | /* | |
1795 | * For 22000 firmware and on we cannot add queue to a station unknown | |
1796 | * to firmware so enable queue here - after the station was added | |
1797 | */ | |
1798 | if (iwl_mvm_has_new_tx_api(mvm)) | |
1799 | iwl_mvm_enable_aux_snif_queue(mvm, &mvm->snif_queue, | |
1800 | mvm->snif_sta.sta_id, | |
1801 | IWL_MVM_TX_FIFO_BE); | |
1802 | ||
1803 | return 0; | |
0e39eb03 CRI |
1804 | } |
1805 | ||
1806 | int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1807 | { | |
1808 | int ret; | |
1809 | ||
1810 | lockdep_assert_held(&mvm->mutex); | |
1811 | ||
b13f43a4 EG |
1812 | iwl_mvm_disable_txq(mvm, mvm->snif_queue, mvm->snif_queue, |
1813 | IWL_MAX_TID_COUNT, 0); | |
0e39eb03 CRI |
1814 | ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); |
1815 | if (ret) | |
1816 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
1817 | ||
1818 | return ret; | |
1819 | } | |
1820 | ||
1821 | void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) | |
1822 | { | |
1823 | iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); | |
1824 | } | |
1825 | ||
712b24ad JB |
1826 | void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) |
1827 | { | |
1828 | lockdep_assert_held(&mvm->mutex); | |
1829 | ||
1830 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
1831 | } | |
1832 | ||
8ca151b5 JB |
1833 | /* |
1834 | * Send the add station command for the vif's broadcast station. | |
1835 | * Assumes that the station was already allocated. | |
1836 | * | |
1837 | * @mvm: the mvm component | |
1838 | * @vif: the interface to which the broadcast station is added | |
1839 | * @bsta: the broadcast station to add. | |
1840 | */ | |
013290aa | 1841 | int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
1842 | { |
1843 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 1844 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
5023d966 | 1845 | static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
a4243402 | 1846 | const u8 *baddr = _baddr; |
7daa7624 | 1847 | int queue; |
df88c08d | 1848 | int ret; |
c5a719ee SS |
1849 | unsigned int wdg_timeout = |
1850 | iwl_mvm_get_wd_timeout(mvm, vif, false, false); | |
1851 | struct iwl_trans_txq_scd_cfg cfg = { | |
1852 | .fifo = IWL_MVM_TX_FIFO_VO, | |
1853 | .sta_id = mvmvif->bcast_sta.sta_id, | |
1854 | .tid = IWL_MAX_TID_COUNT, | |
1855 | .aggregate = false, | |
1856 | .frame_limit = IWL_FRAME_LIMIT, | |
1857 | }; | |
8ca151b5 JB |
1858 | |
1859 | lockdep_assert_held(&mvm->mutex); | |
1860 | ||
c8f54701 | 1861 | if (!iwl_mvm_has_new_tx_api(mvm)) { |
4d339989 LK |
1862 | if (vif->type == NL80211_IFTYPE_AP || |
1863 | vif->type == NL80211_IFTYPE_ADHOC) | |
49f71713 | 1864 | queue = mvm->probe_queue; |
df88c08d | 1865 | else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) |
49f71713 | 1866 | queue = mvm->p2p_dev_queue; |
df88c08d | 1867 | else if (WARN(1, "Missing required TXQ for adding bcast STA\n")) |
de24f638 LK |
1868 | return -EINVAL; |
1869 | ||
df88c08d | 1870 | bsta->tfd_queue_msk |= BIT(queue); |
c5a719ee | 1871 | |
310181ec SS |
1872 | iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, |
1873 | &cfg, wdg_timeout); | |
de24f638 LK |
1874 | } |
1875 | ||
5023d966 JB |
1876 | if (vif->type == NL80211_IFTYPE_ADHOC) |
1877 | baddr = vif->bss_conf.bssid; | |
1878 | ||
0ae98812 | 1879 | if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) |
8ca151b5 JB |
1880 | return -ENOSPC; |
1881 | ||
df88c08d LK |
1882 | ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, |
1883 | mvmvif->id, mvmvif->color); | |
1884 | if (ret) | |
1885 | return ret; | |
1886 | ||
1887 | /* | |
c5a719ee SS |
1888 | * For a000 firmware and on we cannot add queue to a station unknown |
1889 | * to firmware so enable queue here - after the station was added | |
df88c08d | 1890 | */ |
310181ec | 1891 | if (iwl_mvm_has_new_tx_api(mvm)) { |
7daa7624 JB |
1892 | queue = iwl_mvm_tvqm_enable_txq(mvm, vif->hw_queue[0], |
1893 | bsta->sta_id, | |
1894 | IWL_MAX_TID_COUNT, | |
1895 | wdg_timeout); | |
1896 | ||
7b758a11 LC |
1897 | if (vif->type == NL80211_IFTYPE_AP || |
1898 | vif->type == NL80211_IFTYPE_ADHOC) | |
310181ec SS |
1899 | mvm->probe_queue = queue; |
1900 | else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) | |
1901 | mvm->p2p_dev_queue = queue; | |
310181ec | 1902 | } |
df88c08d LK |
1903 | |
1904 | return 0; | |
1905 | } | |
1906 | ||
1907 | static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, | |
1908 | struct ieee80211_vif *vif) | |
1909 | { | |
1910 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
d167e81a | 1911 | int queue; |
df88c08d LK |
1912 | |
1913 | lockdep_assert_held(&mvm->mutex); | |
1914 | ||
d49394a1 SS |
1915 | iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true, 0); |
1916 | ||
d167e81a MG |
1917 | switch (vif->type) { |
1918 | case NL80211_IFTYPE_AP: | |
1919 | case NL80211_IFTYPE_ADHOC: | |
1920 | queue = mvm->probe_queue; | |
1921 | break; | |
1922 | case NL80211_IFTYPE_P2P_DEVICE: | |
1923 | queue = mvm->p2p_dev_queue; | |
1924 | break; | |
1925 | default: | |
1926 | WARN(1, "Can't free bcast queue on vif type %d\n", | |
1927 | vif->type); | |
1928 | return; | |
df88c08d LK |
1929 | } |
1930 | ||
d167e81a MG |
1931 | iwl_mvm_disable_txq(mvm, queue, vif->hw_queue[0], IWL_MAX_TID_COUNT, 0); |
1932 | if (iwl_mvm_has_new_tx_api(mvm)) | |
1933 | return; | |
1934 | ||
1935 | WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); | |
1936 | mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); | |
8ca151b5 JB |
1937 | } |
1938 | ||
1939 | /* Send the FW a request to remove the station from it's internal data | |
1940 | * structures, but DO NOT remove the entry from the local data structures. */ | |
013290aa | 1941 | int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 | 1942 | { |
013290aa | 1943 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1944 | int ret; |
1945 | ||
1946 | lockdep_assert_held(&mvm->mutex); | |
1947 | ||
c8f54701 | 1948 | iwl_mvm_free_bcast_sta_queues(mvm, vif); |
df88c08d | 1949 | |
013290aa | 1950 | ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); |
8ca151b5 JB |
1951 | if (ret) |
1952 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
1953 | return ret; | |
1954 | } | |
1955 | ||
013290aa JB |
1956 | int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
1957 | { | |
1958 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa JB |
1959 | |
1960 | lockdep_assert_held(&mvm->mutex); | |
1961 | ||
c8f54701 | 1962 | return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0, |
ced19f26 SS |
1963 | ieee80211_vif_type_p2p(vif), |
1964 | IWL_STA_GENERAL_PURPOSE); | |
013290aa JB |
1965 | } |
1966 | ||
8ca151b5 JB |
1967 | /* Allocate a new station entry for the broadcast station to the given vif, |
1968 | * and send it to the FW. | |
1969 | * Note that each P2P mac should have its own broadcast station. | |
1970 | * | |
1971 | * @mvm: the mvm component | |
1972 | * @vif: the interface to which the broadcast station is added | |
1973 | * @bsta: the broadcast station to add. */ | |
d197358b | 1974 | int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
1975 | { |
1976 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 1977 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
8ca151b5 JB |
1978 | int ret; |
1979 | ||
1980 | lockdep_assert_held(&mvm->mutex); | |
1981 | ||
013290aa | 1982 | ret = iwl_mvm_alloc_bcast_sta(mvm, vif); |
8ca151b5 JB |
1983 | if (ret) |
1984 | return ret; | |
1985 | ||
013290aa | 1986 | ret = iwl_mvm_send_add_bcast_sta(mvm, vif); |
8ca151b5 JB |
1987 | |
1988 | if (ret) | |
1989 | iwl_mvm_dealloc_int_sta(mvm, bsta); | |
013290aa | 1990 | |
8ca151b5 JB |
1991 | return ret; |
1992 | } | |
1993 | ||
013290aa JB |
1994 | void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
1995 | { | |
1996 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1997 | ||
1998 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
1999 | } | |
2000 | ||
8ca151b5 JB |
2001 | /* |
2002 | * Send the FW a request to remove the station from it's internal data | |
2003 | * structures, and in addition remove it from the local data structure. | |
2004 | */ | |
d197358b | 2005 | int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
2006 | { |
2007 | int ret; | |
2008 | ||
2009 | lockdep_assert_held(&mvm->mutex); | |
2010 | ||
013290aa JB |
2011 | ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); |
2012 | ||
2013 | iwl_mvm_dealloc_bcast_sta(mvm, vif); | |
8ca151b5 | 2014 | |
8ca151b5 JB |
2015 | return ret; |
2016 | } | |
2017 | ||
26d6c16b SS |
2018 | /* |
2019 | * Allocate a new station entry for the multicast station to the given vif, | |
2020 | * and send it to the FW. | |
2021 | * Note that each AP/GO mac should have its own multicast station. | |
2022 | * | |
2023 | * @mvm: the mvm component | |
2024 | * @vif: the interface to which the multicast station is added | |
2025 | */ | |
2026 | int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
2027 | { | |
2028 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
2029 | struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; | |
2030 | static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
2031 | const u8 *maddr = _maddr; | |
2032 | struct iwl_trans_txq_scd_cfg cfg = { | |
2033 | .fifo = IWL_MVM_TX_FIFO_MCAST, | |
2034 | .sta_id = msta->sta_id, | |
2035 | .tid = IWL_MAX_TID_COUNT, | |
2036 | .aggregate = false, | |
2037 | .frame_limit = IWL_FRAME_LIMIT, | |
2038 | }; | |
2039 | unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); | |
2040 | int ret; | |
2041 | ||
2042 | lockdep_assert_held(&mvm->mutex); | |
2043 | ||
ee48b722 LK |
2044 | if (WARN_ON(vif->type != NL80211_IFTYPE_AP && |
2045 | vif->type != NL80211_IFTYPE_ADHOC)) | |
26d6c16b SS |
2046 | return -ENOTSUPP; |
2047 | ||
ced19f26 SS |
2048 | /* |
2049 | * While in previous FWs we had to exclude cab queue from TFD queue | |
2050 | * mask, now it is needed as any other queue. | |
2051 | */ | |
2052 | if (!iwl_mvm_has_new_tx_api(mvm) && | |
2053 | fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { | |
2054 | iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, | |
2055 | &cfg, timeout); | |
2056 | msta->tfd_queue_msk |= BIT(vif->cab_queue); | |
2057 | } | |
26d6c16b SS |
2058 | ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, |
2059 | mvmvif->id, mvmvif->color); | |
2060 | if (ret) { | |
2061 | iwl_mvm_dealloc_int_sta(mvm, msta); | |
2062 | return ret; | |
2063 | } | |
2064 | ||
2065 | /* | |
2066 | * Enable cab queue after the ADD_STA command is sent. | |
2067 | * This is needed for a000 firmware which won't accept SCD_QUEUE_CFG | |
ced19f26 SS |
2068 | * command with unknown station id, and for FW that doesn't support |
2069 | * station API since the cab queue is not included in the | |
2070 | * tfd_queue_mask. | |
26d6c16b | 2071 | */ |
310181ec SS |
2072 | if (iwl_mvm_has_new_tx_api(mvm)) { |
2073 | int queue = iwl_mvm_tvqm_enable_txq(mvm, vif->cab_queue, | |
2074 | msta->sta_id, | |
2075 | IWL_MAX_TID_COUNT, | |
2076 | timeout); | |
e2af3fab | 2077 | mvmvif->cab_queue = queue; |
ced19f26 SS |
2078 | } else if (!fw_has_api(&mvm->fw->ucode_capa, |
2079 | IWL_UCODE_TLV_API_STA_TYPE)) { | |
ee48b722 LK |
2080 | /* |
2081 | * In IBSS, ieee80211_check_queues() sets the cab_queue to be | |
2082 | * invalid, so make sure we use the queue we want. | |
2083 | * Note that this is done here as we want to avoid making DQA | |
2084 | * changes in mac80211 layer. | |
2085 | */ | |
2086 | if (vif->type == NL80211_IFTYPE_ADHOC) { | |
2087 | vif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; | |
2088 | mvmvif->cab_queue = vif->cab_queue; | |
2089 | } | |
310181ec SS |
2090 | iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, |
2091 | &cfg, timeout); | |
2092 | } | |
26d6c16b SS |
2093 | |
2094 | return 0; | |
2095 | } | |
2096 | ||
2097 | /* | |
2098 | * Send the FW a request to remove the station from it's internal data | |
2099 | * structures, and in addition remove it from the local data structure. | |
2100 | */ | |
2101 | int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
2102 | { | |
2103 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
2104 | int ret; | |
2105 | ||
2106 | lockdep_assert_held(&mvm->mutex); | |
2107 | ||
d49394a1 SS |
2108 | iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true, 0); |
2109 | ||
e2af3fab | 2110 | iwl_mvm_disable_txq(mvm, mvmvif->cab_queue, vif->cab_queue, |
26d6c16b SS |
2111 | IWL_MAX_TID_COUNT, 0); |
2112 | ||
2113 | ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); | |
2114 | if (ret) | |
2115 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
2116 | ||
2117 | return ret; | |
2118 | } | |
2119 | ||
113a0447 EG |
2120 | #define IWL_MAX_RX_BA_SESSIONS 16 |
2121 | ||
b915c101 | 2122 | static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) |
10b2b201 | 2123 | { |
b915c101 SS |
2124 | struct iwl_mvm_delba_notif notif = { |
2125 | .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA, | |
2126 | .metadata.sync = 1, | |
2127 | .delba.baid = baid, | |
10b2b201 | 2128 | }; |
b915c101 SS |
2129 | iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); |
2130 | }; | |
10b2b201 | 2131 | |
b915c101 SS |
2132 | static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, |
2133 | struct iwl_mvm_baid_data *data) | |
2134 | { | |
2135 | int i; | |
2136 | ||
2137 | iwl_mvm_sync_rxq_del_ba(mvm, data->baid); | |
2138 | ||
2139 | for (i = 0; i < mvm->trans->num_rx_queues; i++) { | |
2140 | int j; | |
2141 | struct iwl_mvm_reorder_buffer *reorder_buf = | |
2142 | &data->reorder_buf[i]; | |
dfdddd92 JB |
2143 | struct iwl_mvm_reorder_buf_entry *entries = |
2144 | &data->entries[i * data->entries_per_queue]; | |
b915c101 | 2145 | |
0690405f SS |
2146 | spin_lock_bh(&reorder_buf->lock); |
2147 | if (likely(!reorder_buf->num_stored)) { | |
2148 | spin_unlock_bh(&reorder_buf->lock); | |
b915c101 | 2149 | continue; |
0690405f | 2150 | } |
b915c101 SS |
2151 | |
2152 | /* | |
2153 | * This shouldn't happen in regular DELBA since the internal | |
2154 | * delBA notification should trigger a release of all frames in | |
2155 | * the reorder buffer. | |
2156 | */ | |
2157 | WARN_ON(1); | |
2158 | ||
2159 | for (j = 0; j < reorder_buf->buf_size; j++) | |
dfdddd92 | 2160 | __skb_queue_purge(&entries[j].e.frames); |
0690405f SS |
2161 | /* |
2162 | * Prevent timer re-arm. This prevents a very far fetched case | |
2163 | * where we timed out on the notification. There may be prior | |
2164 | * RX frames pending in the RX queue before the notification | |
2165 | * that might get processed between now and the actual deletion | |
2166 | * and we would re-arm the timer although we are deleting the | |
2167 | * reorder buffer. | |
2168 | */ | |
2169 | reorder_buf->removed = true; | |
2170 | spin_unlock_bh(&reorder_buf->lock); | |
2171 | del_timer_sync(&reorder_buf->reorder_timer); | |
b915c101 SS |
2172 | } |
2173 | } | |
2174 | ||
2175 | static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, | |
b915c101 SS |
2176 | struct iwl_mvm_baid_data *data, |
2177 | u16 ssn, u8 buf_size) | |
2178 | { | |
2179 | int i; | |
2180 | ||
2181 | for (i = 0; i < mvm->trans->num_rx_queues; i++) { | |
2182 | struct iwl_mvm_reorder_buffer *reorder_buf = | |
2183 | &data->reorder_buf[i]; | |
dfdddd92 JB |
2184 | struct iwl_mvm_reorder_buf_entry *entries = |
2185 | &data->entries[i * data->entries_per_queue]; | |
b915c101 SS |
2186 | int j; |
2187 | ||
2188 | reorder_buf->num_stored = 0; | |
2189 | reorder_buf->head_sn = ssn; | |
2190 | reorder_buf->buf_size = buf_size; | |
0690405f | 2191 | /* rx reorder timer */ |
8cef5344 KC |
2192 | timer_setup(&reorder_buf->reorder_timer, |
2193 | iwl_mvm_reorder_timer_expired, 0); | |
0690405f SS |
2194 | spin_lock_init(&reorder_buf->lock); |
2195 | reorder_buf->mvm = mvm; | |
b915c101 | 2196 | reorder_buf->queue = i; |
5d43eab6 | 2197 | reorder_buf->valid = false; |
b915c101 | 2198 | for (j = 0; j < reorder_buf->buf_size; j++) |
dfdddd92 | 2199 | __skb_queue_head_init(&entries[j].e.frames); |
b915c101 | 2200 | } |
10b2b201 SS |
2201 | } |
2202 | ||
8ca151b5 | 2203 | int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
10b2b201 | 2204 | int tid, u16 ssn, bool start, u8 buf_size, u16 timeout) |
8ca151b5 | 2205 | { |
9d8ce6af | 2206 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 2207 | struct iwl_mvm_add_sta_cmd cmd = {}; |
10b2b201 | 2208 | struct iwl_mvm_baid_data *baid_data = NULL; |
8ca151b5 JB |
2209 | int ret; |
2210 | u32 status; | |
2211 | ||
2212 | lockdep_assert_held(&mvm->mutex); | |
2213 | ||
113a0447 EG |
2214 | if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { |
2215 | IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); | |
2216 | return -ENOSPC; | |
2217 | } | |
2218 | ||
10b2b201 | 2219 | if (iwl_mvm_has_new_rx_api(mvm) && start) { |
dfdddd92 JB |
2220 | u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); |
2221 | ||
2222 | /* sparse doesn't like the __align() so don't check */ | |
2223 | #ifndef __CHECKER__ | |
2224 | /* | |
2225 | * The division below will be OK if either the cache line size | |
2226 | * can be divided by the entry size (ALIGN will round up) or if | |
2227 | * if the entry size can be divided by the cache line size, in | |
2228 | * which case the ALIGN() will do nothing. | |
2229 | */ | |
2230 | BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && | |
2231 | sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); | |
2232 | #endif | |
2233 | ||
2234 | /* | |
2235 | * Upward align the reorder buffer size to fill an entire cache | |
2236 | * line for each queue, to avoid sharing cache lines between | |
2237 | * different queues. | |
2238 | */ | |
2239 | reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); | |
2240 | ||
10b2b201 SS |
2241 | /* |
2242 | * Allocate here so if allocation fails we can bail out early | |
2243 | * before starting the BA session in the firmware | |
2244 | */ | |
b915c101 SS |
2245 | baid_data = kzalloc(sizeof(*baid_data) + |
2246 | mvm->trans->num_rx_queues * | |
dfdddd92 | 2247 | reorder_buf_size, |
b915c101 | 2248 | GFP_KERNEL); |
10b2b201 SS |
2249 | if (!baid_data) |
2250 | return -ENOMEM; | |
dfdddd92 JB |
2251 | |
2252 | /* | |
2253 | * This division is why we need the above BUILD_BUG_ON(), | |
2254 | * if that doesn't hold then this will not be right. | |
2255 | */ | |
2256 | baid_data->entries_per_queue = | |
2257 | reorder_buf_size / sizeof(baid_data->entries[0]); | |
10b2b201 SS |
2258 | } |
2259 | ||
8ca151b5 JB |
2260 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
2261 | cmd.sta_id = mvm_sta->sta_id; | |
2262 | cmd.add_modify = STA_MODE_MODIFY; | |
93a42667 EG |
2263 | if (start) { |
2264 | cmd.add_immediate_ba_tid = (u8) tid; | |
2265 | cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
854c5705 | 2266 | cmd.rx_ba_window = cpu_to_le16((u16)buf_size); |
93a42667 EG |
2267 | } else { |
2268 | cmd.remove_immediate_ba_tid = (u8) tid; | |
2269 | } | |
8ca151b5 JB |
2270 | cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : |
2271 | STA_MODIFY_REMOVE_BA_TID; | |
2272 | ||
2273 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
2274 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
2275 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 2276 | &cmd, &status); |
8ca151b5 | 2277 | if (ret) |
10b2b201 | 2278 | goto out_free; |
8ca151b5 | 2279 | |
837c4da9 | 2280 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 | 2281 | case ADD_STA_SUCCESS: |
35263a03 SS |
2282 | IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", |
2283 | start ? "start" : "stopp"); | |
8ca151b5 JB |
2284 | break; |
2285 | case ADD_STA_IMMEDIATE_BA_FAILURE: | |
2286 | IWL_WARN(mvm, "RX BA Session refused by fw\n"); | |
2287 | ret = -ENOSPC; | |
2288 | break; | |
2289 | default: | |
2290 | ret = -EIO; | |
2291 | IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", | |
2292 | start ? "start" : "stopp", status); | |
2293 | break; | |
2294 | } | |
2295 | ||
10b2b201 SS |
2296 | if (ret) |
2297 | goto out_free; | |
2298 | ||
2299 | if (start) { | |
2300 | u8 baid; | |
2301 | ||
2302 | mvm->rx_ba_sessions++; | |
2303 | ||
2304 | if (!iwl_mvm_has_new_rx_api(mvm)) | |
2305 | return 0; | |
2306 | ||
2307 | if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { | |
2308 | ret = -EINVAL; | |
2309 | goto out_free; | |
2310 | } | |
2311 | baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> | |
2312 | IWL_ADD_STA_BAID_SHIFT); | |
2313 | baid_data->baid = baid; | |
2314 | baid_data->timeout = timeout; | |
2315 | baid_data->last_rx = jiffies; | |
8cef5344 KC |
2316 | baid_data->rcu_ptr = &mvm->baid_map[baid]; |
2317 | timer_setup(&baid_data->session_timer, | |
2318 | iwl_mvm_rx_agg_session_expired, 0); | |
10b2b201 SS |
2319 | baid_data->mvm = mvm; |
2320 | baid_data->tid = tid; | |
2321 | baid_data->sta_id = mvm_sta->sta_id; | |
2322 | ||
2323 | mvm_sta->tid_to_baid[tid] = baid; | |
2324 | if (timeout) | |
2325 | mod_timer(&baid_data->session_timer, | |
2326 | TU_TO_EXP_TIME(timeout * 2)); | |
2327 | ||
3f1c4c58 | 2328 | iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); |
10b2b201 SS |
2329 | /* |
2330 | * protect the BA data with RCU to cover a case where our | |
2331 | * internal RX sync mechanism will timeout (not that it's | |
2332 | * supposed to happen) and we will free the session data while | |
2333 | * RX is being processed in parallel | |
2334 | */ | |
35263a03 SS |
2335 | IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", |
2336 | mvm_sta->sta_id, tid, baid); | |
10b2b201 SS |
2337 | WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); |
2338 | rcu_assign_pointer(mvm->baid_map[baid], baid_data); | |
60dec523 | 2339 | } else { |
10b2b201 SS |
2340 | u8 baid = mvm_sta->tid_to_baid[tid]; |
2341 | ||
60dec523 SS |
2342 | if (mvm->rx_ba_sessions > 0) |
2343 | /* check that restart flow didn't zero the counter */ | |
2344 | mvm->rx_ba_sessions--; | |
10b2b201 SS |
2345 | if (!iwl_mvm_has_new_rx_api(mvm)) |
2346 | return 0; | |
2347 | ||
2348 | if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) | |
2349 | return -EINVAL; | |
2350 | ||
2351 | baid_data = rcu_access_pointer(mvm->baid_map[baid]); | |
2352 | if (WARN_ON(!baid_data)) | |
2353 | return -EINVAL; | |
2354 | ||
2355 | /* synchronize all rx queues so we can safely delete */ | |
b915c101 | 2356 | iwl_mvm_free_reorder(mvm, baid_data); |
10b2b201 | 2357 | del_timer_sync(&baid_data->session_timer); |
10b2b201 SS |
2358 | RCU_INIT_POINTER(mvm->baid_map[baid], NULL); |
2359 | kfree_rcu(baid_data, rcu_head); | |
35263a03 | 2360 | IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); |
113a0447 | 2361 | } |
10b2b201 | 2362 | return 0; |
113a0447 | 2363 | |
10b2b201 SS |
2364 | out_free: |
2365 | kfree(baid_data); | |
8ca151b5 JB |
2366 | return ret; |
2367 | } | |
2368 | ||
9794c64f LK |
2369 | int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
2370 | int tid, u8 queue, bool start) | |
8ca151b5 | 2371 | { |
9d8ce6af | 2372 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 2373 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
2374 | int ret; |
2375 | u32 status; | |
2376 | ||
2377 | lockdep_assert_held(&mvm->mutex); | |
2378 | ||
2379 | if (start) { | |
2380 | mvm_sta->tfd_queue_msk |= BIT(queue); | |
2381 | mvm_sta->tid_disable_agg &= ~BIT(tid); | |
2382 | } else { | |
cf961e16 | 2383 | /* In DQA-mode the queue isn't removed on agg termination */ |
8ca151b5 JB |
2384 | mvm_sta->tid_disable_agg |= BIT(tid); |
2385 | } | |
2386 | ||
2387 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); | |
2388 | cmd.sta_id = mvm_sta->sta_id; | |
2389 | cmd.add_modify = STA_MODE_MODIFY; | |
bb49701b SS |
2390 | if (!iwl_mvm_has_new_tx_api(mvm)) |
2391 | cmd.modify_mask = STA_MODIFY_QUEUES; | |
2392 | cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; | |
8ca151b5 JB |
2393 | cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); |
2394 | cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); | |
2395 | ||
2396 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
2397 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
2398 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 2399 | &cmd, &status); |
8ca151b5 JB |
2400 | if (ret) |
2401 | return ret; | |
2402 | ||
837c4da9 | 2403 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
2404 | case ADD_STA_SUCCESS: |
2405 | break; | |
2406 | default: | |
2407 | ret = -EIO; | |
2408 | IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", | |
2409 | start ? "start" : "stopp", status); | |
2410 | break; | |
2411 | } | |
2412 | ||
2413 | return ret; | |
2414 | } | |
2415 | ||
b797e3fb | 2416 | const u8 tid_to_mac80211_ac[] = { |
8ca151b5 JB |
2417 | IEEE80211_AC_BE, |
2418 | IEEE80211_AC_BK, | |
2419 | IEEE80211_AC_BK, | |
2420 | IEEE80211_AC_BE, | |
2421 | IEEE80211_AC_VI, | |
2422 | IEEE80211_AC_VI, | |
2423 | IEEE80211_AC_VO, | |
2424 | IEEE80211_AC_VO, | |
9794c64f | 2425 | IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ |
8ca151b5 JB |
2426 | }; |
2427 | ||
3e56eadf JB |
2428 | static const u8 tid_to_ucode_ac[] = { |
2429 | AC_BE, | |
2430 | AC_BK, | |
2431 | AC_BK, | |
2432 | AC_BE, | |
2433 | AC_VI, | |
2434 | AC_VI, | |
2435 | AC_VO, | |
2436 | AC_VO, | |
2437 | }; | |
2438 | ||
8ca151b5 JB |
2439 | int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
2440 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) | |
2441 | { | |
5b577a90 | 2442 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 2443 | struct iwl_mvm_tid_data *tid_data; |
dd32162d | 2444 | u16 normalized_ssn; |
8ca151b5 | 2445 | int txq_id; |
4ecafae9 | 2446 | int ret; |
8ca151b5 JB |
2447 | |
2448 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
2449 | return -EINVAL; | |
2450 | ||
bd800e41 NG |
2451 | if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && |
2452 | mvmsta->tid_data[tid].state != IWL_AGG_OFF) { | |
2453 | IWL_ERR(mvm, | |
2454 | "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", | |
8ca151b5 JB |
2455 | mvmsta->tid_data[tid].state); |
2456 | return -ENXIO; | |
2457 | } | |
2458 | ||
2459 | lockdep_assert_held(&mvm->mutex); | |
2460 | ||
b2492501 AN |
2461 | spin_lock_bh(&mvmsta->lock); |
2462 | ||
2463 | /* possible race condition - we entered D0i3 while starting agg */ | |
2464 | if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { | |
2465 | spin_unlock_bh(&mvmsta->lock); | |
2466 | IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); | |
2467 | return -EIO; | |
2468 | } | |
2469 | ||
9f9af3d7 | 2470 | spin_lock(&mvm->queue_info_lock); |
4ecafae9 | 2471 | |
cf961e16 LK |
2472 | /* |
2473 | * Note the possible cases: | |
2474 | * 1. In DQA mode with an enabled TXQ - TXQ needs to become agg'ed | |
2475 | * 2. Non-DQA mode: the TXQ hasn't yet been enabled, so find a free | |
2476 | * one and mark it as reserved | |
2477 | * 3. In DQA mode, but no traffic yet on this TID: same treatment as in | |
2478 | * non-DQA mode, since the TXQ hasn't yet been allocated | |
34e10860 SS |
2479 | * Don't support case 3 for new TX path as it is not expected to happen |
2480 | * and aggregation will be offloaded soon anyway | |
cf961e16 LK |
2481 | */ |
2482 | txq_id = mvmsta->tid_data[tid].txq_id; | |
34e10860 SS |
2483 | if (iwl_mvm_has_new_tx_api(mvm)) { |
2484 | if (txq_id == IWL_MVM_INVALID_QUEUE) { | |
2485 | ret = -ENXIO; | |
2486 | goto release_locks; | |
2487 | } | |
c8f54701 | 2488 | } else if (unlikely(mvm->queue_info[txq_id].status == |
34e10860 | 2489 | IWL_MVM_QUEUE_SHARED)) { |
9f9af3d7 LK |
2490 | ret = -ENXIO; |
2491 | IWL_DEBUG_TX_QUEUES(mvm, | |
2492 | "Can't start tid %d agg on shared queue!\n", | |
2493 | tid); | |
2494 | goto release_locks; | |
c8f54701 | 2495 | } else if (mvm->queue_info[txq_id].status != IWL_MVM_QUEUE_READY) { |
9794c64f | 2496 | txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, |
c8f54701 JB |
2497 | IWL_MVM_DQA_MIN_DATA_QUEUE, |
2498 | IWL_MVM_DQA_MAX_DATA_QUEUE); | |
cf961e16 LK |
2499 | if (txq_id < 0) { |
2500 | ret = txq_id; | |
cf961e16 LK |
2501 | IWL_ERR(mvm, "Failed to allocate agg queue\n"); |
2502 | goto release_locks; | |
2503 | } | |
01796ff2 SS |
2504 | /* |
2505 | * TXQ shouldn't be in inactive mode for non-DQA, so getting | |
2506 | * an inactive queue from iwl_mvm_find_free_queue() is | |
2507 | * certainly a bug | |
2508 | */ | |
2509 | WARN_ON(mvm->queue_info[txq_id].status == | |
2510 | IWL_MVM_QUEUE_INACTIVE); | |
cf961e16 LK |
2511 | |
2512 | /* TXQ hasn't yet been enabled, so mark it only as reserved */ | |
2513 | mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; | |
4ecafae9 | 2514 | } |
9f9af3d7 LK |
2515 | |
2516 | spin_unlock(&mvm->queue_info_lock); | |
8ca151b5 | 2517 | |
cf961e16 LK |
2518 | IWL_DEBUG_TX_QUEUES(mvm, |
2519 | "AGG for tid %d will be on queue #%d\n", | |
2520 | tid, txq_id); | |
2521 | ||
8ca151b5 | 2522 | tid_data = &mvmsta->tid_data[tid]; |
9a886586 | 2523 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
2524 | tid_data->txq_id = txq_id; |
2525 | *ssn = tid_data->ssn; | |
2526 | ||
2527 | IWL_DEBUG_TX_QUEUES(mvm, | |
2528 | "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", | |
2529 | mvmsta->sta_id, tid, txq_id, tid_data->ssn, | |
2530 | tid_data->next_reclaimed); | |
2531 | ||
dd32162d LK |
2532 | /* |
2533 | * In A000 HW, the next_reclaimed index is only 8 bit, so we'll need | |
2534 | * to align the wrap around of ssn so we compare relevant values. | |
2535 | */ | |
2536 | normalized_ssn = tid_data->ssn; | |
2537 | if (mvm->trans->cfg->gen2) | |
2538 | normalized_ssn &= 0xff; | |
2539 | ||
2540 | if (normalized_ssn == tid_data->next_reclaimed) { | |
8ca151b5 JB |
2541 | tid_data->state = IWL_AGG_STARTING; |
2542 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
2543 | } else { | |
2544 | tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
2545 | } | |
2546 | ||
4ecafae9 | 2547 | ret = 0; |
9f9af3d7 | 2548 | goto out; |
4ecafae9 LK |
2549 | |
2550 | release_locks: | |
9f9af3d7 LK |
2551 | spin_unlock(&mvm->queue_info_lock); |
2552 | out: | |
8ca151b5 JB |
2553 | spin_unlock_bh(&mvmsta->lock); |
2554 | ||
4ecafae9 | 2555 | return ret; |
8ca151b5 JB |
2556 | } |
2557 | ||
2558 | int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
bb81bb68 EG |
2559 | struct ieee80211_sta *sta, u16 tid, u8 buf_size, |
2560 | bool amsdu) | |
8ca151b5 | 2561 | { |
5b577a90 | 2562 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 2563 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
5d42e7b2 EG |
2564 | unsigned int wdg_timeout = |
2565 | iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); | |
eea76c36 | 2566 | int queue, ret; |
cf961e16 | 2567 | bool alloc_queue = true; |
9f9af3d7 | 2568 | enum iwl_mvm_queue_status queue_status; |
8ca151b5 JB |
2569 | u16 ssn; |
2570 | ||
eea76c36 EG |
2571 | struct iwl_trans_txq_scd_cfg cfg = { |
2572 | .sta_id = mvmsta->sta_id, | |
2573 | .tid = tid, | |
2574 | .frame_limit = buf_size, | |
2575 | .aggregate = true, | |
2576 | }; | |
2577 | ||
efed6640 ES |
2578 | BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) |
2579 | != IWL_MAX_TID_COUNT); | |
2580 | ||
8ca151b5 JB |
2581 | spin_lock_bh(&mvmsta->lock); |
2582 | ssn = tid_data->ssn; | |
2583 | queue = tid_data->txq_id; | |
2584 | tid_data->state = IWL_AGG_ON; | |
efed6640 | 2585 | mvmsta->agg_tids |= BIT(tid); |
8ca151b5 | 2586 | tid_data->ssn = 0xffff; |
bb81bb68 | 2587 | tid_data->amsdu_in_ampdu_allowed = amsdu; |
8ca151b5 JB |
2588 | spin_unlock_bh(&mvmsta->lock); |
2589 | ||
34e10860 SS |
2590 | if (iwl_mvm_has_new_tx_api(mvm)) { |
2591 | /* | |
0ec9257b SS |
2592 | * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() |
2593 | * would have failed, so if we are here there is no need to | |
2594 | * allocate a queue. | |
2595 | * However, if aggregation size is different than the default | |
2596 | * size, the scheduler should be reconfigured. | |
2597 | * We cannot do this with the new TX API, so return unsupported | |
2598 | * for now, until it will be offloaded to firmware.. | |
2599 | * Note that if SCD default value changes - this condition | |
2600 | * should be updated as well. | |
34e10860 | 2601 | */ |
0ec9257b | 2602 | if (buf_size < IWL_FRAME_LIMIT) |
34e10860 SS |
2603 | return -ENOTSUPP; |
2604 | ||
2605 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); | |
2606 | if (ret) | |
2607 | return -EIO; | |
2608 | goto out; | |
2609 | } | |
2610 | ||
eea76c36 | 2611 | cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; |
8ca151b5 | 2612 | |
9f9af3d7 LK |
2613 | spin_lock_bh(&mvm->queue_info_lock); |
2614 | queue_status = mvm->queue_info[queue].status; | |
2615 | spin_unlock_bh(&mvm->queue_info_lock); | |
2616 | ||
c8f54701 JB |
2617 | /* Maybe there is no need to even alloc a queue... */ |
2618 | if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) | |
2619 | alloc_queue = false; | |
cf961e16 | 2620 | |
c8f54701 JB |
2621 | /* |
2622 | * Only reconfig the SCD for the queue if the window size has | |
2623 | * changed from current (become smaller) | |
2624 | */ | |
0ec9257b | 2625 | if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { |
cf961e16 | 2626 | /* |
c8f54701 JB |
2627 | * If reconfiguring an existing queue, it first must be |
2628 | * drained | |
cf961e16 | 2629 | */ |
c8f54701 JB |
2630 | ret = iwl_trans_wait_tx_queues_empty(mvm->trans, |
2631 | BIT(queue)); | |
2632 | if (ret) { | |
2633 | IWL_ERR(mvm, | |
2634 | "Error draining queue before reconfig\n"); | |
2635 | return ret; | |
2636 | } | |
cf961e16 | 2637 | |
c8f54701 JB |
2638 | ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, |
2639 | mvmsta->sta_id, tid, | |
2640 | buf_size, ssn); | |
2641 | if (ret) { | |
2642 | IWL_ERR(mvm, | |
2643 | "Error reconfiguring TXQ #%d\n", queue); | |
2644 | return ret; | |
cf961e16 LK |
2645 | } |
2646 | } | |
2647 | ||
2648 | if (alloc_queue) | |
2649 | iwl_mvm_enable_txq(mvm, queue, | |
2650 | vif->hw_queue[tid_to_mac80211_ac[tid]], ssn, | |
2651 | &cfg, wdg_timeout); | |
fa7878e7 | 2652 | |
9f9af3d7 LK |
2653 | /* Send ADD_STA command to enable aggs only if the queue isn't shared */ |
2654 | if (queue_status != IWL_MVM_QUEUE_SHARED) { | |
2655 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); | |
2656 | if (ret) | |
2657 | return -EIO; | |
2658 | } | |
8ca151b5 | 2659 | |
4ecafae9 LK |
2660 | /* No need to mark as reserved */ |
2661 | spin_lock_bh(&mvm->queue_info_lock); | |
cf961e16 | 2662 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; |
4ecafae9 LK |
2663 | spin_unlock_bh(&mvm->queue_info_lock); |
2664 | ||
34e10860 | 2665 | out: |
8ca151b5 JB |
2666 | /* |
2667 | * Even though in theory the peer could have different | |
2668 | * aggregation reorder buffer sizes for different sessions, | |
2669 | * our ucode doesn't allow for that and has a global limit | |
2670 | * for each station. Therefore, use the minimum of all the | |
2671 | * aggregation sessions and our default value. | |
2672 | */ | |
2673 | mvmsta->max_agg_bufsize = | |
2674 | min(mvmsta->max_agg_bufsize, buf_size); | |
2675 | mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; | |
2676 | ||
9ee718aa EL |
2677 | IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", |
2678 | sta->addr, tid); | |
2679 | ||
9e680946 | 2680 | return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); |
8ca151b5 JB |
2681 | } |
2682 | ||
34e10860 SS |
2683 | static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, |
2684 | struct iwl_mvm_sta *mvmsta, | |
2685 | u16 txq_id) | |
2686 | { | |
2687 | if (iwl_mvm_has_new_tx_api(mvm)) | |
2688 | return; | |
2689 | ||
2690 | spin_lock_bh(&mvm->queue_info_lock); | |
2691 | /* | |
2692 | * The TXQ is marked as reserved only if no traffic came through yet | |
2693 | * This means no traffic has been sent on this TID (agg'd or not), so | |
2694 | * we no longer have use for the queue. Since it hasn't even been | |
2695 | * allocated through iwl_mvm_enable_txq, so we can just mark it back as | |
2696 | * free. | |
2697 | */ | |
2698 | if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) | |
2699 | mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; | |
2700 | ||
2701 | spin_unlock_bh(&mvm->queue_info_lock); | |
2702 | } | |
2703 | ||
8ca151b5 JB |
2704 | int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
2705 | struct ieee80211_sta *sta, u16 tid) | |
2706 | { | |
5b577a90 | 2707 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
2708 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
2709 | u16 txq_id; | |
2710 | int err; | |
2711 | ||
f9aa8dd3 EG |
2712 | /* |
2713 | * If mac80211 is cleaning its state, then say that we finished since | |
2714 | * our state has been cleared anyway. | |
2715 | */ | |
2716 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
2717 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
2718 | return 0; | |
2719 | } | |
2720 | ||
8ca151b5 JB |
2721 | spin_lock_bh(&mvmsta->lock); |
2722 | ||
2723 | txq_id = tid_data->txq_id; | |
2724 | ||
2725 | IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", | |
2726 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
2727 | ||
efed6640 ES |
2728 | mvmsta->agg_tids &= ~BIT(tid); |
2729 | ||
34e10860 | 2730 | iwl_mvm_unreserve_agg_queue(mvm, mvmsta, txq_id); |
4ecafae9 | 2731 | |
8ca151b5 JB |
2732 | switch (tid_data->state) { |
2733 | case IWL_AGG_ON: | |
9a886586 | 2734 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
2735 | |
2736 | IWL_DEBUG_TX_QUEUES(mvm, | |
2737 | "ssn = %d, next_recl = %d\n", | |
2738 | tid_data->ssn, tid_data->next_reclaimed); | |
2739 | ||
8ca151b5 | 2740 | tid_data->ssn = 0xffff; |
f7f89e7b | 2741 | tid_data->state = IWL_AGG_OFF; |
f7f89e7b JB |
2742 | spin_unlock_bh(&mvmsta->lock); |
2743 | ||
2744 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
2745 | ||
2746 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); | |
f7f89e7b | 2747 | return 0; |
8ca151b5 JB |
2748 | case IWL_AGG_STARTING: |
2749 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
2750 | /* | |
2751 | * The agg session has been stopped before it was set up. This | |
2752 | * can happen when the AddBA timer times out for example. | |
2753 | */ | |
2754 | ||
2755 | /* No barriers since we are under mutex */ | |
2756 | lockdep_assert_held(&mvm->mutex); | |
8ca151b5 JB |
2757 | |
2758 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
2759 | tid_data->state = IWL_AGG_OFF; | |
2760 | err = 0; | |
2761 | break; | |
2762 | default: | |
2763 | IWL_ERR(mvm, | |
2764 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
2765 | mvmsta->sta_id, tid, tid_data->state); | |
2766 | IWL_ERR(mvm, | |
2767 | "\ttid_data->txq_id = %d\n", tid_data->txq_id); | |
2768 | err = -EINVAL; | |
2769 | } | |
2770 | ||
2771 | spin_unlock_bh(&mvmsta->lock); | |
2772 | ||
2773 | return err; | |
2774 | } | |
2775 | ||
e3d9e7ce EG |
2776 | int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
2777 | struct ieee80211_sta *sta, u16 tid) | |
2778 | { | |
5b577a90 | 2779 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
e3d9e7ce EG |
2780 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
2781 | u16 txq_id; | |
b6658ff8 | 2782 | enum iwl_mvm_agg_state old_state; |
e3d9e7ce EG |
2783 | |
2784 | /* | |
2785 | * First set the agg state to OFF to avoid calling | |
2786 | * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. | |
2787 | */ | |
2788 | spin_lock_bh(&mvmsta->lock); | |
2789 | txq_id = tid_data->txq_id; | |
2790 | IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", | |
2791 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
b6658ff8 | 2792 | old_state = tid_data->state; |
e3d9e7ce | 2793 | tid_data->state = IWL_AGG_OFF; |
efed6640 | 2794 | mvmsta->agg_tids &= ~BIT(tid); |
e3d9e7ce EG |
2795 | spin_unlock_bh(&mvmsta->lock); |
2796 | ||
34e10860 | 2797 | iwl_mvm_unreserve_agg_queue(mvm, mvmsta, txq_id); |
4ecafae9 | 2798 | |
b6658ff8 | 2799 | if (old_state >= IWL_AGG_ON) { |
fe92e32a | 2800 | iwl_mvm_drain_sta(mvm, mvmsta, true); |
d6d517b7 | 2801 | |
d167e81a MG |
2802 | if (iwl_mvm_has_new_tx_api(mvm)) { |
2803 | if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, | |
2804 | BIT(tid), 0)) | |
2805 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); | |
d6d517b7 | 2806 | iwl_trans_wait_txq_empty(mvm->trans, txq_id); |
d167e81a MG |
2807 | } else { |
2808 | if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) | |
2809 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); | |
d6d517b7 | 2810 | iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); |
d167e81a | 2811 | } |
d6d517b7 | 2812 | |
fe92e32a | 2813 | iwl_mvm_drain_sta(mvm, mvmsta, false); |
b6658ff8 | 2814 | |
f7f89e7b | 2815 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); |
b6658ff8 | 2816 | } |
e3d9e7ce | 2817 | |
e3d9e7ce EG |
2818 | return 0; |
2819 | } | |
2820 | ||
8ca151b5 JB |
2821 | static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) |
2822 | { | |
2dc2a15e | 2823 | int i, max = -1, max_offs = -1; |
8ca151b5 JB |
2824 | |
2825 | lockdep_assert_held(&mvm->mutex); | |
2826 | ||
2dc2a15e JB |
2827 | /* Pick the unused key offset with the highest 'deleted' |
2828 | * counter. Every time a key is deleted, all the counters | |
2829 | * are incremented and the one that was just deleted is | |
2830 | * reset to zero. Thus, the highest counter is the one | |
2831 | * that was deleted longest ago. Pick that one. | |
2832 | */ | |
2833 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
2834 | if (test_bit(i, mvm->fw_key_table)) | |
2835 | continue; | |
2836 | if (mvm->fw_key_deleted[i] > max) { | |
2837 | max = mvm->fw_key_deleted[i]; | |
2838 | max_offs = i; | |
2839 | } | |
2840 | } | |
8ca151b5 | 2841 | |
2dc2a15e | 2842 | if (max_offs < 0) |
8ca151b5 JB |
2843 | return STA_KEY_IDX_INVALID; |
2844 | ||
2dc2a15e | 2845 | return max_offs; |
8ca151b5 JB |
2846 | } |
2847 | ||
5f7a1847 JB |
2848 | static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, |
2849 | struct ieee80211_vif *vif, | |
2850 | struct ieee80211_sta *sta) | |
8ca151b5 | 2851 | { |
5b530e95 | 2852 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 | 2853 | |
5f7a1847 JB |
2854 | if (sta) |
2855 | return iwl_mvm_sta_from_mac80211(sta); | |
8ca151b5 JB |
2856 | |
2857 | /* | |
2858 | * The device expects GTKs for station interfaces to be | |
2859 | * installed as GTKs for the AP station. If we have no | |
2860 | * station ID, then use AP's station ID. | |
2861 | */ | |
2862 | if (vif->type == NL80211_IFTYPE_STATION && | |
0ae98812 | 2863 | mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { |
9513c5e1 AA |
2864 | u8 sta_id = mvmvif->ap_sta_id; |
2865 | ||
7d6a1ab6 EG |
2866 | sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], |
2867 | lockdep_is_held(&mvm->mutex)); | |
2868 | ||
9513c5e1 AA |
2869 | /* |
2870 | * It is possible that the 'sta' parameter is NULL, | |
2871 | * for example when a GTK is removed - the sta_id will then | |
2872 | * be the AP ID, and no station was passed by mac80211. | |
2873 | */ | |
7d6a1ab6 EG |
2874 | if (IS_ERR_OR_NULL(sta)) |
2875 | return NULL; | |
2876 | ||
2877 | return iwl_mvm_sta_from_mac80211(sta); | |
9513c5e1 | 2878 | } |
8ca151b5 | 2879 | |
5f7a1847 | 2880 | return NULL; |
8ca151b5 JB |
2881 | } |
2882 | ||
2883 | static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, | |
85aeb58c | 2884 | u32 sta_id, |
45c458b4 | 2885 | struct ieee80211_key_conf *key, bool mcast, |
d6ee54a9 LC |
2886 | u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, |
2887 | u8 key_offset) | |
8ca151b5 | 2888 | { |
45c458b4 SS |
2889 | union { |
2890 | struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; | |
2891 | struct iwl_mvm_add_sta_key_cmd cmd; | |
2892 | } u = {}; | |
f9dc0004 | 2893 | __le16 key_flags; |
79920749 JB |
2894 | int ret; |
2895 | u32 status; | |
8ca151b5 | 2896 | u16 keyidx; |
45c458b4 SS |
2897 | u64 pn = 0; |
2898 | int i, size; | |
2899 | bool new_api = fw_has_api(&mvm->fw->ucode_capa, | |
2900 | IWL_UCODE_TLV_API_TKIP_MIC_KEYS); | |
8ca151b5 | 2901 | |
85aeb58c DS |
2902 | if (sta_id == IWL_MVM_INVALID_STA) |
2903 | return -EINVAL; | |
2904 | ||
45c458b4 | 2905 | keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & |
8ca151b5 JB |
2906 | STA_KEY_FLG_KEYID_MSK; |
2907 | key_flags = cpu_to_le16(keyidx); | |
2908 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); | |
2909 | ||
45c458b4 | 2910 | switch (key->cipher) { |
8ca151b5 JB |
2911 | case WLAN_CIPHER_SUITE_TKIP: |
2912 | key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); | |
45c458b4 SS |
2913 | if (new_api) { |
2914 | memcpy((void *)&u.cmd.tx_mic_key, | |
2915 | &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], | |
2916 | IWL_MIC_KEY_SIZE); | |
2917 | ||
2918 | memcpy((void *)&u.cmd.rx_mic_key, | |
2919 | &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], | |
2920 | IWL_MIC_KEY_SIZE); | |
2921 | pn = atomic64_read(&key->tx_pn); | |
2922 | ||
2923 | } else { | |
2924 | u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; | |
2925 | for (i = 0; i < 5; i++) | |
2926 | u.cmd_v1.tkip_rx_ttak[i] = | |
2927 | cpu_to_le16(tkip_p1k[i]); | |
2928 | } | |
2929 | memcpy(u.cmd.common.key, key->key, key->keylen); | |
8ca151b5 JB |
2930 | break; |
2931 | case WLAN_CIPHER_SUITE_CCMP: | |
2932 | key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); | |
45c458b4 SS |
2933 | memcpy(u.cmd.common.key, key->key, key->keylen); |
2934 | if (new_api) | |
2935 | pn = atomic64_read(&key->tx_pn); | |
8ca151b5 | 2936 | break; |
ba3943b0 JB |
2937 | case WLAN_CIPHER_SUITE_WEP104: |
2938 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); | |
aa0cb08b | 2939 | /* fall through */ |
ba3943b0 JB |
2940 | case WLAN_CIPHER_SUITE_WEP40: |
2941 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); | |
45c458b4 | 2942 | memcpy(u.cmd.common.key + 3, key->key, key->keylen); |
ba3943b0 | 2943 | break; |
2a53d166 AB |
2944 | case WLAN_CIPHER_SUITE_GCMP_256: |
2945 | key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); | |
2946 | /* fall through */ | |
2947 | case WLAN_CIPHER_SUITE_GCMP: | |
2948 | key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); | |
45c458b4 SS |
2949 | memcpy(u.cmd.common.key, key->key, key->keylen); |
2950 | if (new_api) | |
2951 | pn = atomic64_read(&key->tx_pn); | |
2a53d166 | 2952 | break; |
8ca151b5 | 2953 | default: |
e36e5433 | 2954 | key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); |
45c458b4 | 2955 | memcpy(u.cmd.common.key, key->key, key->keylen); |
8ca151b5 JB |
2956 | } |
2957 | ||
ba3943b0 | 2958 | if (mcast) |
8ca151b5 JB |
2959 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
2960 | ||
45c458b4 SS |
2961 | u.cmd.common.key_offset = key_offset; |
2962 | u.cmd.common.key_flags = key_flags; | |
85aeb58c | 2963 | u.cmd.common.sta_id = sta_id; |
45c458b4 SS |
2964 | |
2965 | if (new_api) { | |
2966 | u.cmd.transmit_seq_cnt = cpu_to_le64(pn); | |
2967 | size = sizeof(u.cmd); | |
2968 | } else { | |
2969 | size = sizeof(u.cmd_v1); | |
2970 | } | |
8ca151b5 JB |
2971 | |
2972 | status = ADD_STA_SUCCESS; | |
a1022927 | 2973 | if (cmd_flags & CMD_ASYNC) |
45c458b4 SS |
2974 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, |
2975 | &u.cmd); | |
a1022927 | 2976 | else |
45c458b4 SS |
2977 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, |
2978 | &u.cmd, &status); | |
8ca151b5 JB |
2979 | |
2980 | switch (status) { | |
2981 | case ADD_STA_SUCCESS: | |
2982 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); | |
2983 | break; | |
2984 | default: | |
2985 | ret = -EIO; | |
2986 | IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); | |
2987 | break; | |
2988 | } | |
2989 | ||
2990 | return ret; | |
2991 | } | |
2992 | ||
2993 | static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, | |
2994 | struct ieee80211_key_conf *keyconf, | |
2995 | u8 sta_id, bool remove_key) | |
2996 | { | |
2997 | struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; | |
2998 | ||
2999 | /* verify the key details match the required command's expectations */ | |
8e160ab8 AB |
3000 | if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || |
3001 | (keyconf->keyidx != 4 && keyconf->keyidx != 5) || | |
3002 | (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && | |
3003 | keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && | |
3004 | keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) | |
3005 | return -EINVAL; | |
3006 | ||
3007 | if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && | |
3008 | keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) | |
8ca151b5 JB |
3009 | return -EINVAL; |
3010 | ||
3011 | igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); | |
3012 | igtk_cmd.sta_id = cpu_to_le32(sta_id); | |
3013 | ||
3014 | if (remove_key) { | |
3015 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); | |
3016 | } else { | |
3017 | struct ieee80211_key_seq seq; | |
3018 | const u8 *pn; | |
3019 | ||
aa950524 AB |
3020 | switch (keyconf->cipher) { |
3021 | case WLAN_CIPHER_SUITE_AES_CMAC: | |
3022 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); | |
3023 | break; | |
8e160ab8 AB |
3024 | case WLAN_CIPHER_SUITE_BIP_GMAC_128: |
3025 | case WLAN_CIPHER_SUITE_BIP_GMAC_256: | |
3026 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); | |
3027 | break; | |
aa950524 AB |
3028 | default: |
3029 | return -EINVAL; | |
3030 | } | |
3031 | ||
8e160ab8 AB |
3032 | memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); |
3033 | if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) | |
3034 | igtk_cmd.ctrl_flags |= | |
3035 | cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); | |
8ca151b5 JB |
3036 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); |
3037 | pn = seq.aes_cmac.pn; | |
3038 | igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | | |
3039 | ((u64) pn[4] << 8) | | |
3040 | ((u64) pn[3] << 16) | | |
3041 | ((u64) pn[2] << 24) | | |
3042 | ((u64) pn[1] << 32) | | |
3043 | ((u64) pn[0] << 40)); | |
3044 | } | |
3045 | ||
3046 | IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", | |
3047 | remove_key ? "removing" : "installing", | |
3048 | igtk_cmd.sta_id); | |
3049 | ||
8e160ab8 AB |
3050 | if (!iwl_mvm_has_new_rx_api(mvm)) { |
3051 | struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { | |
3052 | .ctrl_flags = igtk_cmd.ctrl_flags, | |
3053 | .key_id = igtk_cmd.key_id, | |
3054 | .sta_id = igtk_cmd.sta_id, | |
3055 | .receive_seq_cnt = igtk_cmd.receive_seq_cnt | |
3056 | }; | |
3057 | ||
3058 | memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, | |
3059 | ARRAY_SIZE(igtk_cmd_v1.igtk)); | |
3060 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, | |
3061 | sizeof(igtk_cmd_v1), &igtk_cmd_v1); | |
3062 | } | |
a1022927 | 3063 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
8ca151b5 JB |
3064 | sizeof(igtk_cmd), &igtk_cmd); |
3065 | } | |
3066 | ||
3067 | ||
3068 | static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, | |
3069 | struct ieee80211_vif *vif, | |
3070 | struct ieee80211_sta *sta) | |
3071 | { | |
5b530e95 | 3072 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
3073 | |
3074 | if (sta) | |
3075 | return sta->addr; | |
3076 | ||
3077 | if (vif->type == NL80211_IFTYPE_STATION && | |
0ae98812 | 3078 | mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { |
8ca151b5 JB |
3079 | u8 sta_id = mvmvif->ap_sta_id; |
3080 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
3081 | lockdep_is_held(&mvm->mutex)); | |
3082 | return sta->addr; | |
3083 | } | |
3084 | ||
3085 | ||
3086 | return NULL; | |
3087 | } | |
3088 | ||
2f6319d1 JB |
3089 | static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
3090 | struct ieee80211_vif *vif, | |
3091 | struct ieee80211_sta *sta, | |
ba3943b0 | 3092 | struct ieee80211_key_conf *keyconf, |
d6ee54a9 | 3093 | u8 key_offset, |
ba3943b0 | 3094 | bool mcast) |
2f6319d1 | 3095 | { |
2f6319d1 JB |
3096 | int ret; |
3097 | const u8 *addr; | |
3098 | struct ieee80211_key_seq seq; | |
3099 | u16 p1k[5]; | |
85aeb58c DS |
3100 | u32 sta_id; |
3101 | ||
3102 | if (sta) { | |
3103 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
3104 | ||
3105 | sta_id = mvm_sta->sta_id; | |
3106 | } else if (vif->type == NL80211_IFTYPE_AP && | |
3107 | !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { | |
3108 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
3109 | ||
3110 | sta_id = mvmvif->mcast_sta.sta_id; | |
3111 | } else { | |
3112 | IWL_ERR(mvm, "Failed to find station id\n"); | |
3113 | return -EINVAL; | |
3114 | } | |
2f6319d1 JB |
3115 | |
3116 | switch (keyconf->cipher) { | |
3117 | case WLAN_CIPHER_SUITE_TKIP: | |
85aeb58c DS |
3118 | if (vif->type == NL80211_IFTYPE_AP) { |
3119 | ret = -EINVAL; | |
3120 | break; | |
3121 | } | |
2f6319d1 JB |
3122 | addr = iwl_mvm_get_mac_addr(mvm, vif, sta); |
3123 | /* get phase 1 key from mac80211 */ | |
3124 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
3125 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
85aeb58c | 3126 | ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, |
d6ee54a9 | 3127 | seq.tkip.iv32, p1k, 0, key_offset); |
2f6319d1 JB |
3128 | break; |
3129 | case WLAN_CIPHER_SUITE_CCMP: | |
ba3943b0 JB |
3130 | case WLAN_CIPHER_SUITE_WEP40: |
3131 | case WLAN_CIPHER_SUITE_WEP104: | |
2a53d166 AB |
3132 | case WLAN_CIPHER_SUITE_GCMP: |
3133 | case WLAN_CIPHER_SUITE_GCMP_256: | |
85aeb58c | 3134 | ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, |
d6ee54a9 | 3135 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
3136 | break; |
3137 | default: | |
85aeb58c | 3138 | ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, |
d6ee54a9 | 3139 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
3140 | } |
3141 | ||
3142 | return ret; | |
3143 | } | |
3144 | ||
3145 | static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, | |
ba3943b0 JB |
3146 | struct ieee80211_key_conf *keyconf, |
3147 | bool mcast) | |
2f6319d1 | 3148 | { |
45c458b4 SS |
3149 | union { |
3150 | struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; | |
3151 | struct iwl_mvm_add_sta_key_cmd cmd; | |
3152 | } u = {}; | |
3153 | bool new_api = fw_has_api(&mvm->fw->ucode_capa, | |
3154 | IWL_UCODE_TLV_API_TKIP_MIC_KEYS); | |
2f6319d1 | 3155 | __le16 key_flags; |
45c458b4 | 3156 | int ret, size; |
2f6319d1 JB |
3157 | u32 status; |
3158 | ||
85aeb58c DS |
3159 | if (sta_id == IWL_MVM_INVALID_STA) |
3160 | return -EINVAL; | |
3161 | ||
2f6319d1 JB |
3162 | key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & |
3163 | STA_KEY_FLG_KEYID_MSK); | |
3164 | key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); | |
3165 | key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); | |
3166 | ||
ba3943b0 | 3167 | if (mcast) |
2f6319d1 JB |
3168 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
3169 | ||
45c458b4 SS |
3170 | /* |
3171 | * The fields assigned here are in the same location at the start | |
3172 | * of the command, so we can do this union trick. | |
3173 | */ | |
3174 | u.cmd.common.key_flags = key_flags; | |
3175 | u.cmd.common.key_offset = keyconf->hw_key_idx; | |
3176 | u.cmd.common.sta_id = sta_id; | |
3177 | ||
3178 | size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); | |
2f6319d1 JB |
3179 | |
3180 | status = ADD_STA_SUCCESS; | |
45c458b4 SS |
3181 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, |
3182 | &status); | |
2f6319d1 JB |
3183 | |
3184 | switch (status) { | |
3185 | case ADD_STA_SUCCESS: | |
3186 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); | |
3187 | break; | |
3188 | default: | |
3189 | ret = -EIO; | |
3190 | IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); | |
3191 | break; | |
3192 | } | |
3193 | ||
3194 | return ret; | |
3195 | } | |
3196 | ||
8ca151b5 JB |
3197 | int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
3198 | struct ieee80211_vif *vif, | |
3199 | struct ieee80211_sta *sta, | |
3200 | struct ieee80211_key_conf *keyconf, | |
d6ee54a9 | 3201 | u8 key_offset) |
8ca151b5 | 3202 | { |
ba3943b0 | 3203 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 | 3204 | struct iwl_mvm_sta *mvm_sta; |
85aeb58c | 3205 | u8 sta_id = IWL_MVM_INVALID_STA; |
8ca151b5 | 3206 | int ret; |
11828dbc | 3207 | static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; |
8ca151b5 JB |
3208 | |
3209 | lockdep_assert_held(&mvm->mutex); | |
3210 | ||
85aeb58c DS |
3211 | if (vif->type != NL80211_IFTYPE_AP || |
3212 | keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { | |
3213 | /* Get the station id from the mvm local station table */ | |
3214 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); | |
3215 | if (!mvm_sta) { | |
3216 | IWL_ERR(mvm, "Failed to find station\n"); | |
3217 | return -EINVAL; | |
3218 | } | |
3219 | sta_id = mvm_sta->sta_id; | |
8ca151b5 | 3220 | |
85aeb58c DS |
3221 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || |
3222 | keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || | |
3223 | keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { | |
3224 | ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, | |
3225 | false); | |
3226 | goto end; | |
3227 | } | |
8ca151b5 | 3228 | |
85aeb58c DS |
3229 | /* |
3230 | * It is possible that the 'sta' parameter is NULL, and thus | |
3231 | * there is a need to retrieve the sta from the local station | |
3232 | * table. | |
3233 | */ | |
3234 | if (!sta) { | |
3235 | sta = rcu_dereference_protected( | |
3236 | mvm->fw_id_to_mac_id[sta_id], | |
3237 | lockdep_is_held(&mvm->mutex)); | |
3238 | if (IS_ERR_OR_NULL(sta)) { | |
3239 | IWL_ERR(mvm, "Invalid station id\n"); | |
3240 | return -EINVAL; | |
3241 | } | |
8ca151b5 | 3242 | } |
8ca151b5 | 3243 | |
85aeb58c DS |
3244 | if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
3245 | return -EINVAL; | |
3246 | } | |
8ca151b5 | 3247 | |
d6ee54a9 LC |
3248 | /* If the key_offset is not pre-assigned, we need to find a |
3249 | * new offset to use. In normal cases, the offset is not | |
3250 | * pre-assigned, but during HW_RESTART we want to reuse the | |
3251 | * same indices, so we pass them when this function is called. | |
3252 | * | |
3253 | * In D3 entry, we need to hardcoded the indices (because the | |
3254 | * firmware hardcodes the PTK offset to 0). In this case, we | |
3255 | * need to make sure we don't overwrite the hw_key_idx in the | |
3256 | * keyconf structure, because otherwise we cannot configure | |
3257 | * the original ones back when resuming. | |
3258 | */ | |
3259 | if (key_offset == STA_KEY_IDX_INVALID) { | |
3260 | key_offset = iwl_mvm_set_fw_key_idx(mvm); | |
3261 | if (key_offset == STA_KEY_IDX_INVALID) | |
8ca151b5 | 3262 | return -ENOSPC; |
d6ee54a9 | 3263 | keyconf->hw_key_idx = key_offset; |
8ca151b5 JB |
3264 | } |
3265 | ||
d6ee54a9 | 3266 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); |
9c3deeb5 | 3267 | if (ret) |
ba3943b0 | 3268 | goto end; |
ba3943b0 JB |
3269 | |
3270 | /* | |
3271 | * For WEP, the same key is used for multicast and unicast. Upload it | |
3272 | * again, using the same key offset, and now pointing the other one | |
3273 | * to the same key slot (offset). | |
3274 | * If this fails, remove the original as well. | |
3275 | */ | |
85aeb58c DS |
3276 | if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || |
3277 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && | |
3278 | sta) { | |
d6ee54a9 LC |
3279 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, |
3280 | key_offset, !mcast); | |
ba3943b0 | 3281 | if (ret) { |
ba3943b0 | 3282 | __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
9c3deeb5 | 3283 | goto end; |
ba3943b0 JB |
3284 | } |
3285 | } | |
8ca151b5 | 3286 | |
9c3deeb5 LC |
3287 | __set_bit(key_offset, mvm->fw_key_table); |
3288 | ||
8ca151b5 JB |
3289 | end: |
3290 | IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
3291 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, | |
11828dbc | 3292 | sta ? sta->addr : zero_addr, ret); |
8ca151b5 JB |
3293 | return ret; |
3294 | } | |
3295 | ||
3296 | int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, | |
3297 | struct ieee80211_vif *vif, | |
3298 | struct ieee80211_sta *sta, | |
3299 | struct ieee80211_key_conf *keyconf) | |
3300 | { | |
ba3943b0 | 3301 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 | 3302 | struct iwl_mvm_sta *mvm_sta; |
0ae98812 | 3303 | u8 sta_id = IWL_MVM_INVALID_STA; |
2dc2a15e | 3304 | int ret, i; |
8ca151b5 JB |
3305 | |
3306 | lockdep_assert_held(&mvm->mutex); | |
3307 | ||
5f7a1847 JB |
3308 | /* Get the station from the mvm local station table */ |
3309 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); | |
71793b7d LC |
3310 | if (mvm_sta) |
3311 | sta_id = mvm_sta->sta_id; | |
85aeb58c DS |
3312 | else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) |
3313 | sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; | |
3314 | ||
8ca151b5 JB |
3315 | |
3316 | IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", | |
3317 | keyconf->keyidx, sta_id); | |
3318 | ||
71793b7d LC |
3319 | if (mvm_sta && (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || |
3320 | keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || | |
3321 | keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)) | |
8ca151b5 JB |
3322 | return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); |
3323 | ||
2f6319d1 | 3324 | if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { |
8ca151b5 JB |
3325 | IWL_ERR(mvm, "offset %d not used in fw key table.\n", |
3326 | keyconf->hw_key_idx); | |
3327 | return -ENOENT; | |
3328 | } | |
3329 | ||
2dc2a15e JB |
3330 | /* track which key was deleted last */ |
3331 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
3332 | if (mvm->fw_key_deleted[i] < U8_MAX) | |
3333 | mvm->fw_key_deleted[i]++; | |
3334 | } | |
3335 | mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; | |
3336 | ||
85aeb58c | 3337 | if (sta && !mvm_sta) { |
8ca151b5 JB |
3338 | IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); |
3339 | return 0; | |
3340 | } | |
3341 | ||
ba3943b0 JB |
3342 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
3343 | if (ret) | |
3344 | return ret; | |
3345 | ||
3346 | /* delete WEP key twice to get rid of (now useless) offset */ | |
3347 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
3348 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) | |
3349 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); | |
3350 | ||
3351 | return ret; | |
8ca151b5 JB |
3352 | } |
3353 | ||
3354 | void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, | |
3355 | struct ieee80211_vif *vif, | |
3356 | struct ieee80211_key_conf *keyconf, | |
3357 | struct ieee80211_sta *sta, u32 iv32, | |
3358 | u16 *phase1key) | |
3359 | { | |
c3eb536a | 3360 | struct iwl_mvm_sta *mvm_sta; |
ba3943b0 | 3361 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 3362 | |
c3eb536a BL |
3363 | rcu_read_lock(); |
3364 | ||
5f7a1847 JB |
3365 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
3366 | if (WARN_ON_ONCE(!mvm_sta)) | |
45854360 | 3367 | goto unlock; |
85aeb58c | 3368 | iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, |
d6ee54a9 | 3369 | iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); |
45854360 JB |
3370 | |
3371 | unlock: | |
c3eb536a | 3372 | rcu_read_unlock(); |
8ca151b5 JB |
3373 | } |
3374 | ||
9cc40712 JB |
3375 | void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, |
3376 | struct ieee80211_sta *sta) | |
8ca151b5 | 3377 | { |
5b577a90 | 3378 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 3379 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 3380 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 3381 | .sta_id = mvmsta->sta_id, |
5af01772 | 3382 | .station_flags_msk = cpu_to_le32(STA_FLG_PS), |
9cc40712 | 3383 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 JB |
3384 | }; |
3385 | int ret; | |
3386 | ||
854c5705 SS |
3387 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
3388 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
8ca151b5 JB |
3389 | if (ret) |
3390 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
3391 | } | |
3392 | ||
9cc40712 JB |
3393 | void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, |
3394 | struct ieee80211_sta *sta, | |
8ca151b5 | 3395 | enum ieee80211_frame_release_type reason, |
3e56eadf | 3396 | u16 cnt, u16 tids, bool more_data, |
9a3fcf91 | 3397 | bool single_sta_queue) |
8ca151b5 | 3398 | { |
5b577a90 | 3399 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 3400 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 3401 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 3402 | .sta_id = mvmsta->sta_id, |
8ca151b5 JB |
3403 | .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, |
3404 | .sleep_tx_count = cpu_to_le16(cnt), | |
9cc40712 | 3405 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 | 3406 | }; |
3e56eadf JB |
3407 | int tid, ret; |
3408 | unsigned long _tids = tids; | |
3409 | ||
3410 | /* convert TIDs to ACs - we don't support TSPEC so that's OK | |
3411 | * Note that this field is reserved and unused by firmware not | |
3412 | * supporting GO uAPSD, so it's safe to always do this. | |
3413 | */ | |
3414 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) | |
3415 | cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); | |
3416 | ||
9a3fcf91 SS |
3417 | /* If we're releasing frames from aggregation or dqa queues then check |
3418 | * if all the queues that we're releasing frames from, combined, have: | |
3e56eadf JB |
3419 | * - more frames than the service period, in which case more_data |
3420 | * needs to be set | |
3421 | * - fewer than 'cnt' frames, in which case we need to adjust the | |
3422 | * firmware command (but do that unconditionally) | |
3423 | */ | |
9a3fcf91 | 3424 | if (single_sta_queue) { |
3e56eadf | 3425 | int remaining = cnt; |
36be0eb6 | 3426 | int sleep_tx_count; |
3e56eadf JB |
3427 | |
3428 | spin_lock_bh(&mvmsta->lock); | |
3429 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { | |
3430 | struct iwl_mvm_tid_data *tid_data; | |
3431 | u16 n_queued; | |
3432 | ||
3433 | tid_data = &mvmsta->tid_data[tid]; | |
3e56eadf | 3434 | |
dd32162d | 3435 | n_queued = iwl_mvm_tid_queued(mvm, tid_data); |
3e56eadf JB |
3436 | if (n_queued > remaining) { |
3437 | more_data = true; | |
3438 | remaining = 0; | |
3439 | break; | |
3440 | } | |
3441 | remaining -= n_queued; | |
3442 | } | |
36be0eb6 EG |
3443 | sleep_tx_count = cnt - remaining; |
3444 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) | |
3445 | mvmsta->sleep_tx_count = sleep_tx_count; | |
3e56eadf JB |
3446 | spin_unlock_bh(&mvmsta->lock); |
3447 | ||
36be0eb6 | 3448 | cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); |
3e56eadf JB |
3449 | if (WARN_ON(cnt - remaining == 0)) { |
3450 | ieee80211_sta_eosp(sta); | |
3451 | return; | |
3452 | } | |
3453 | } | |
3454 | ||
3455 | /* Note: this is ignored by firmware not supporting GO uAPSD */ | |
3456 | if (more_data) | |
ced19f26 | 3457 | cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; |
3e56eadf JB |
3458 | |
3459 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { | |
3460 | mvmsta->next_status_eosp = true; | |
ced19f26 | 3461 | cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; |
3e56eadf | 3462 | } else { |
ced19f26 | 3463 | cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; |
3e56eadf | 3464 | } |
8ca151b5 | 3465 | |
156f92f2 EG |
3466 | /* block the Tx queues until the FW updated the sleep Tx count */ |
3467 | iwl_trans_block_txq_ptrs(mvm->trans, true); | |
3468 | ||
3469 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, | |
3470 | CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, | |
854c5705 | 3471 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); |
8ca151b5 JB |
3472 | if (ret) |
3473 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
3474 | } | |
3e56eadf | 3475 | |
0416841d JB |
3476 | void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, |
3477 | struct iwl_rx_cmd_buffer *rxb) | |
3e56eadf JB |
3478 | { |
3479 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
3480 | struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; | |
3481 | struct ieee80211_sta *sta; | |
3482 | u32 sta_id = le32_to_cpu(notif->sta_id); | |
3483 | ||
3484 | if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) | |
0416841d | 3485 | return; |
3e56eadf JB |
3486 | |
3487 | rcu_read_lock(); | |
3488 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
3489 | if (!IS_ERR_OR_NULL(sta)) | |
3490 | ieee80211_sta_eosp(sta); | |
3491 | rcu_read_unlock(); | |
3e56eadf | 3492 | } |
09b0ce1a AO |
3493 | |
3494 | void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, | |
3495 | struct iwl_mvm_sta *mvmsta, bool disable) | |
3496 | { | |
3497 | struct iwl_mvm_add_sta_cmd cmd = { | |
3498 | .add_modify = STA_MODE_MODIFY, | |
3499 | .sta_id = mvmsta->sta_id, | |
3500 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
3501 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
3502 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), | |
3503 | }; | |
3504 | int ret; | |
3505 | ||
854c5705 SS |
3506 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
3507 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
09b0ce1a AO |
3508 | if (ret) |
3509 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
3510 | } | |
003e5236 AO |
3511 | |
3512 | void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, | |
3513 | struct ieee80211_sta *sta, | |
3514 | bool disable) | |
3515 | { | |
3516 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
3517 | ||
3518 | spin_lock_bh(&mvm_sta->lock); | |
3519 | ||
3520 | if (mvm_sta->disable_tx == disable) { | |
3521 | spin_unlock_bh(&mvm_sta->lock); | |
3522 | return; | |
3523 | } | |
3524 | ||
3525 | mvm_sta->disable_tx = disable; | |
3526 | ||
c8f54701 JB |
3527 | /* Tell mac80211 to start/stop queuing tx for this station */ |
3528 | ieee80211_sta_block_awake(mvm->hw, sta, disable); | |
003e5236 AO |
3529 | |
3530 | iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); | |
3531 | ||
3532 | spin_unlock_bh(&mvm_sta->lock); | |
3533 | } | |
3534 | ||
ced19f26 SS |
3535 | static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, |
3536 | struct iwl_mvm_vif *mvmvif, | |
3537 | struct iwl_mvm_int_sta *sta, | |
3538 | bool disable) | |
3539 | { | |
3540 | u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); | |
3541 | struct iwl_mvm_add_sta_cmd cmd = { | |
3542 | .add_modify = STA_MODE_MODIFY, | |
3543 | .sta_id = sta->sta_id, | |
3544 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
3545 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
3546 | .mac_id_n_color = cpu_to_le32(id), | |
3547 | }; | |
3548 | int ret; | |
3549 | ||
3550 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 0, | |
3551 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
3552 | if (ret) | |
3553 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
3554 | } | |
3555 | ||
003e5236 AO |
3556 | void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, |
3557 | struct iwl_mvm_vif *mvmvif, | |
3558 | bool disable) | |
3559 | { | |
3560 | struct ieee80211_sta *sta; | |
3561 | struct iwl_mvm_sta *mvm_sta; | |
3562 | int i; | |
3563 | ||
3564 | lockdep_assert_held(&mvm->mutex); | |
3565 | ||
3566 | /* Block/unblock all the stations of the given mvmvif */ | |
0ae98812 | 3567 | for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { |
003e5236 AO |
3568 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], |
3569 | lockdep_is_held(&mvm->mutex)); | |
3570 | if (IS_ERR_OR_NULL(sta)) | |
3571 | continue; | |
3572 | ||
3573 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
3574 | if (mvm_sta->mac_id_n_color != | |
3575 | FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) | |
3576 | continue; | |
3577 | ||
3578 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); | |
3579 | } | |
ced19f26 SS |
3580 | |
3581 | if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) | |
3582 | return; | |
3583 | ||
3584 | /* Need to block/unblock also multicast station */ | |
3585 | if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) | |
3586 | iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, | |
3587 | &mvmvif->mcast_sta, disable); | |
3588 | ||
3589 | /* | |
3590 | * Only unblock the broadcast station (FW blocks it for immediate | |
3591 | * quiet, not the driver) | |
3592 | */ | |
3593 | if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) | |
3594 | iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, | |
3595 | &mvmvif->bcast_sta, disable); | |
003e5236 | 3596 | } |
dc88b4ba LC |
3597 | |
3598 | void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
3599 | { | |
3600 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
3601 | struct iwl_mvm_sta *mvmsta; | |
3602 | ||
3603 | rcu_read_lock(); | |
3604 | ||
3605 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); | |
3606 | ||
3607 | if (!WARN_ON(!mvmsta)) | |
3608 | iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); | |
3609 | ||
3610 | rcu_read_unlock(); | |
3611 | } | |
dd32162d LK |
3612 | |
3613 | u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) | |
3614 | { | |
3615 | u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); | |
3616 | ||
3617 | /* | |
3618 | * In A000 HW, the next_reclaimed index is only 8 bit, so we'll need | |
3619 | * to align the wrap around of ssn so we compare relevant values. | |
3620 | */ | |
3621 | if (mvm->trans->cfg->gen2) | |
3622 | sn &= 0xff; | |
3623 | ||
3624 | return ieee80211_sn_sub(sn, tid_data->next_reclaimed); | |
3625 | } |