]>
Commit | Line | Data |
---|---|---|
8ca151b5 JB |
1 | /****************************************************************************** |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
fa7878e7 AO |
8 | * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. |
9 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
854c5705 | 10 | * Copyright(c) 2016 Intel Deutschland GmbH |
8ca151b5 JB |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of version 2 of the GNU General Public License as | |
14 | * published by the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
24 | * USA | |
25 | * | |
26 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 27 | * in the file called COPYING. |
8ca151b5 JB |
28 | * |
29 | * Contact Information: | |
cb2f8277 | 30 | * Intel Linux Wireless <linuxwifi@intel.com> |
8ca151b5 JB |
31 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
32 | * | |
33 | * BSD LICENSE | |
34 | * | |
fa7878e7 AO |
35 | * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. |
36 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
854c5705 | 37 | * Copyright(c) 2016 Intel Deutschland GmbH |
8ca151b5 JB |
38 | * All rights reserved. |
39 | * | |
40 | * Redistribution and use in source and binary forms, with or without | |
41 | * modification, are permitted provided that the following conditions | |
42 | * are met: | |
43 | * | |
44 | * * Redistributions of source code must retain the above copyright | |
45 | * notice, this list of conditions and the following disclaimer. | |
46 | * * Redistributions in binary form must reproduce the above copyright | |
47 | * notice, this list of conditions and the following disclaimer in | |
48 | * the documentation and/or other materials provided with the | |
49 | * distribution. | |
50 | * * Neither the name Intel Corporation nor the names of its | |
51 | * contributors may be used to endorse or promote products derived | |
52 | * from this software without specific prior written permission. | |
53 | * | |
54 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
55 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
56 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
57 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
58 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
59 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
60 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
61 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
62 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
63 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
64 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
65 | * | |
66 | *****************************************************************************/ | |
67 | #include <net/mac80211.h> | |
68 | ||
69 | #include "mvm.h" | |
70 | #include "sta.h" | |
9ee718aa | 71 | #include "rs.h" |
8ca151b5 | 72 | |
854c5705 SS |
73 | /* |
74 | * New version of ADD_STA_sta command added new fields at the end of the | |
75 | * structure, so sending the size of the relevant API's structure is enough to | |
76 | * support both API versions. | |
77 | */ | |
78 | static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) | |
79 | { | |
80 | return iwl_mvm_has_new_rx_api(mvm) ? | |
81 | sizeof(struct iwl_mvm_add_sta_cmd) : | |
82 | sizeof(struct iwl_mvm_add_sta_cmd_v7); | |
83 | } | |
84 | ||
b92e661b EP |
85 | static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, |
86 | enum nl80211_iftype iftype) | |
8ca151b5 JB |
87 | { |
88 | int sta_id; | |
b92e661b | 89 | u32 reserved_ids = 0; |
8ca151b5 | 90 | |
b92e661b | 91 | BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32); |
8ca151b5 JB |
92 | WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); |
93 | ||
94 | lockdep_assert_held(&mvm->mutex); | |
95 | ||
b92e661b EP |
96 | /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ |
97 | if (iftype != NL80211_IFTYPE_STATION) | |
98 | reserved_ids = BIT(0); | |
99 | ||
8ca151b5 | 100 | /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ |
b92e661b EP |
101 | for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++) { |
102 | if (BIT(sta_id) & reserved_ids) | |
103 | continue; | |
104 | ||
8ca151b5 JB |
105 | if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], |
106 | lockdep_is_held(&mvm->mutex))) | |
107 | return sta_id; | |
b92e661b | 108 | } |
8ca151b5 JB |
109 | return IWL_MVM_STATION_COUNT; |
110 | } | |
111 | ||
7a453973 JB |
112 | /* send station add/update command to firmware */ |
113 | int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
24afba76 | 114 | bool update, unsigned int flags) |
8ca151b5 | 115 | { |
9d8ce6af | 116 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
4b8265ab EG |
117 | struct iwl_mvm_add_sta_cmd add_sta_cmd = { |
118 | .sta_id = mvm_sta->sta_id, | |
119 | .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), | |
120 | .add_modify = update ? 1 : 0, | |
121 | .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | | |
122 | STA_FLG_MIMO_EN_MSK), | |
cf0cda19 | 123 | .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), |
4b8265ab | 124 | }; |
8ca151b5 JB |
125 | int ret; |
126 | u32 status; | |
127 | u32 agg_size = 0, mpdu_dens = 0; | |
128 | ||
24afba76 | 129 | if (!update || (flags & STA_MODIFY_QUEUES)) { |
7a453973 JB |
130 | add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); |
131 | memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); | |
24afba76 LK |
132 | |
133 | if (flags & STA_MODIFY_QUEUES) | |
134 | add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; | |
7a453973 | 135 | } |
5bc5aaad JB |
136 | |
137 | switch (sta->bandwidth) { | |
138 | case IEEE80211_STA_RX_BW_160: | |
139 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); | |
140 | /* fall through */ | |
141 | case IEEE80211_STA_RX_BW_80: | |
142 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); | |
143 | /* fall through */ | |
144 | case IEEE80211_STA_RX_BW_40: | |
145 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); | |
146 | /* fall through */ | |
147 | case IEEE80211_STA_RX_BW_20: | |
148 | if (sta->ht_cap.ht_supported) | |
149 | add_sta_cmd.station_flags |= | |
150 | cpu_to_le32(STA_FLG_FAT_EN_20MHZ); | |
151 | break; | |
152 | } | |
153 | ||
154 | switch (sta->rx_nss) { | |
155 | case 1: | |
156 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
157 | break; | |
158 | case 2: | |
159 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); | |
160 | break; | |
161 | case 3 ... 8: | |
162 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); | |
163 | break; | |
164 | } | |
165 | ||
166 | switch (sta->smps_mode) { | |
167 | case IEEE80211_SMPS_AUTOMATIC: | |
168 | case IEEE80211_SMPS_NUM_MODES: | |
169 | WARN_ON(1); | |
170 | break; | |
171 | case IEEE80211_SMPS_STATIC: | |
172 | /* override NSS */ | |
173 | add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); | |
174 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
175 | break; | |
176 | case IEEE80211_SMPS_DYNAMIC: | |
177 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); | |
178 | break; | |
179 | case IEEE80211_SMPS_OFF: | |
180 | /* nothing */ | |
181 | break; | |
182 | } | |
8ca151b5 JB |
183 | |
184 | if (sta->ht_cap.ht_supported) { | |
185 | add_sta_cmd.station_flags_msk |= | |
186 | cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | | |
187 | STA_FLG_AGG_MPDU_DENS_MSK); | |
188 | ||
189 | mpdu_dens = sta->ht_cap.ampdu_density; | |
190 | } | |
191 | ||
192 | if (sta->vht_cap.vht_supported) { | |
193 | agg_size = sta->vht_cap.cap & | |
194 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; | |
195 | agg_size >>= | |
196 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; | |
197 | } else if (sta->ht_cap.ht_supported) { | |
198 | agg_size = sta->ht_cap.ampdu_factor; | |
199 | } | |
200 | ||
201 | add_sta_cmd.station_flags |= | |
202 | cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); | |
203 | add_sta_cmd.station_flags |= | |
204 | cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); | |
205 | ||
206 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
207 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
208 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 209 | &add_sta_cmd, &status); |
8ca151b5 JB |
210 | if (ret) |
211 | return ret; | |
212 | ||
837c4da9 | 213 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
214 | case ADD_STA_SUCCESS: |
215 | IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); | |
216 | break; | |
217 | default: | |
218 | ret = -EIO; | |
219 | IWL_ERR(mvm, "ADD_STA failed\n"); | |
220 | break; | |
221 | } | |
222 | ||
223 | return ret; | |
224 | } | |
225 | ||
10b2b201 SS |
226 | static void iwl_mvm_rx_agg_session_expired(unsigned long data) |
227 | { | |
228 | struct iwl_mvm_baid_data __rcu **rcu_ptr = (void *)data; | |
229 | struct iwl_mvm_baid_data *ba_data; | |
230 | struct ieee80211_sta *sta; | |
231 | struct iwl_mvm_sta *mvm_sta; | |
232 | unsigned long timeout; | |
233 | ||
234 | rcu_read_lock(); | |
235 | ||
236 | ba_data = rcu_dereference(*rcu_ptr); | |
237 | ||
238 | if (WARN_ON(!ba_data)) | |
239 | goto unlock; | |
240 | ||
241 | if (!ba_data->timeout) | |
242 | goto unlock; | |
243 | ||
244 | timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); | |
245 | if (time_is_after_jiffies(timeout)) { | |
246 | mod_timer(&ba_data->session_timer, timeout); | |
247 | goto unlock; | |
248 | } | |
249 | ||
250 | /* Timer expired */ | |
251 | sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); | |
252 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
253 | ieee80211_stop_rx_ba_session_offl(mvm_sta->vif, | |
254 | sta->addr, ba_data->tid); | |
255 | unlock: | |
256 | rcu_read_unlock(); | |
257 | } | |
258 | ||
a0f6bf2a AN |
259 | static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm, |
260 | struct ieee80211_sta *sta) | |
261 | { | |
262 | unsigned long used_hw_queues; | |
263 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
5d42e7b2 EG |
264 | unsigned int wdg_timeout = |
265 | iwl_mvm_get_wd_timeout(mvm, NULL, true, false); | |
a0f6bf2a AN |
266 | u32 ac; |
267 | ||
268 | lockdep_assert_held(&mvm->mutex); | |
269 | ||
270 | used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL); | |
271 | ||
272 | /* Find available queues, and allocate them to the ACs */ | |
273 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
274 | u8 queue = find_first_zero_bit(&used_hw_queues, | |
275 | mvm->first_agg_queue); | |
276 | ||
277 | if (queue >= mvm->first_agg_queue) { | |
278 | IWL_ERR(mvm, "Failed to allocate STA queue\n"); | |
279 | return -EBUSY; | |
280 | } | |
281 | ||
282 | __set_bit(queue, &used_hw_queues); | |
283 | mvmsta->hw_queue[ac] = queue; | |
284 | } | |
285 | ||
286 | /* Found a place for all queues - enable them */ | |
287 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
288 | iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac], | |
4ecafae9 | 289 | mvmsta->hw_queue[ac], |
5c1156ef LK |
290 | iwl_mvm_ac_to_tx_fifo[ac], 0, |
291 | wdg_timeout); | |
a0f6bf2a AN |
292 | mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]); |
293 | } | |
294 | ||
295 | return 0; | |
296 | } | |
297 | ||
298 | static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm, | |
299 | struct ieee80211_sta *sta) | |
300 | { | |
301 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
302 | unsigned long sta_msk; | |
303 | int i; | |
304 | ||
305 | lockdep_assert_held(&mvm->mutex); | |
306 | ||
307 | /* disable the TDLS STA-specific queues */ | |
308 | sta_msk = mvmsta->tfd_queue_msk; | |
a4ca3ed4 | 309 | for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE) |
06ecdba3 | 310 | iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0); |
a0f6bf2a AN |
311 | } |
312 | ||
24afba76 LK |
313 | static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, |
314 | struct ieee80211_sta *sta, u8 ac, int tid, | |
315 | struct ieee80211_hdr *hdr) | |
316 | { | |
317 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
318 | struct iwl_trans_txq_scd_cfg cfg = { | |
319 | .fifo = iwl_mvm_ac_to_tx_fifo[ac], | |
320 | .sta_id = mvmsta->sta_id, | |
321 | .tid = tid, | |
322 | .frame_limit = IWL_FRAME_LIMIT, | |
323 | }; | |
324 | unsigned int wdg_timeout = | |
325 | iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); | |
326 | u8 mac_queue = mvmsta->vif->hw_queue[ac]; | |
327 | int queue = -1; | |
328 | int ssn; | |
cf961e16 | 329 | int ret; |
24afba76 LK |
330 | |
331 | lockdep_assert_held(&mvm->mutex); | |
332 | ||
d2515a99 | 333 | spin_lock_bh(&mvm->queue_info_lock); |
24afba76 LK |
334 | |
335 | /* | |
336 | * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one | |
337 | * exists | |
338 | */ | |
339 | if (!ieee80211_is_data_qos(hdr->frame_control) || | |
340 | ieee80211_is_qos_nullfunc(hdr->frame_control)) { | |
341 | queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_MGMT_QUEUE, | |
342 | IWL_MVM_DQA_MAX_MGMT_QUEUE); | |
343 | if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) | |
344 | IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", | |
345 | queue); | |
346 | ||
347 | /* If no such queue is found, we'll use a DATA queue instead */ | |
348 | } | |
349 | ||
350 | if (queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { | |
351 | queue = mvmsta->reserved_queue; | |
352 | IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); | |
353 | } | |
354 | ||
355 | if (queue < 0) | |
356 | queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_DATA_QUEUE, | |
357 | IWL_MVM_DQA_MAX_DATA_QUEUE); | |
cf961e16 LK |
358 | |
359 | /* | |
360 | * Mark TXQ as ready, even though it hasn't been fully configured yet, | |
361 | * to make sure no one else takes it. | |
362 | * This will allow avoiding re-acquiring the lock at the end of the | |
363 | * configuration. On error we'll mark it back as free. | |
364 | */ | |
24afba76 | 365 | if (queue >= 0) |
cf961e16 | 366 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; |
24afba76 | 367 | |
d2515a99 | 368 | spin_unlock_bh(&mvm->queue_info_lock); |
24afba76 LK |
369 | |
370 | /* TODO: support shared queues for same RA */ | |
371 | if (queue < 0) | |
372 | return -ENOSPC; | |
373 | ||
374 | /* | |
375 | * Actual en/disablement of aggregations is through the ADD_STA HCMD, | |
376 | * but for configuring the SCD to send A-MPDUs we need to mark the queue | |
377 | * as aggregatable. | |
378 | * Mark all DATA queues as allowing to be aggregated at some point | |
379 | */ | |
d5216a28 LK |
380 | cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || |
381 | queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); | |
24afba76 LK |
382 | |
383 | IWL_DEBUG_TX_QUEUES(mvm, "Allocating queue #%d to sta %d on tid %d\n", | |
384 | queue, mvmsta->sta_id, tid); | |
385 | ||
386 | ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); | |
387 | iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg, | |
388 | wdg_timeout); | |
389 | ||
390 | spin_lock_bh(&mvmsta->lock); | |
391 | mvmsta->tid_data[tid].txq_id = queue; | |
392 | mvmsta->tfd_queue_msk |= BIT(queue); | |
393 | ||
394 | if (mvmsta->reserved_queue == queue) | |
395 | mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; | |
396 | spin_unlock_bh(&mvmsta->lock); | |
397 | ||
cf961e16 LK |
398 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); |
399 | if (ret) | |
400 | goto out_err; | |
401 | ||
402 | return 0; | |
403 | ||
404 | out_err: | |
405 | iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0); | |
406 | ||
407 | return ret; | |
24afba76 LK |
408 | } |
409 | ||
410 | static inline u8 iwl_mvm_tid_to_ac_queue(int tid) | |
411 | { | |
412 | if (tid == IWL_MAX_TID_COUNT) | |
413 | return IEEE80211_AC_VO; /* MGMT */ | |
414 | ||
415 | return tid_to_mac80211_ac[tid]; | |
416 | } | |
417 | ||
418 | static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, | |
419 | struct ieee80211_sta *sta, int tid) | |
420 | { | |
421 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
422 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; | |
423 | struct sk_buff *skb; | |
424 | struct ieee80211_hdr *hdr; | |
425 | struct sk_buff_head deferred_tx; | |
426 | u8 mac_queue; | |
427 | bool no_queue = false; /* Marks if there is a problem with the queue */ | |
428 | u8 ac; | |
429 | ||
430 | lockdep_assert_held(&mvm->mutex); | |
431 | ||
432 | skb = skb_peek(&tid_data->deferred_tx_frames); | |
433 | if (!skb) | |
434 | return; | |
435 | hdr = (void *)skb->data; | |
436 | ||
437 | ac = iwl_mvm_tid_to_ac_queue(tid); | |
438 | mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; | |
439 | ||
440 | if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE && | |
441 | iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { | |
442 | IWL_ERR(mvm, | |
443 | "Can't alloc TXQ for sta %d tid %d - dropping frame\n", | |
444 | mvmsta->sta_id, tid); | |
445 | ||
446 | /* | |
447 | * Mark queue as problematic so later the deferred traffic is | |
448 | * freed, as we can do nothing with it | |
449 | */ | |
450 | no_queue = true; | |
451 | } | |
452 | ||
453 | __skb_queue_head_init(&deferred_tx); | |
454 | ||
d2515a99 LK |
455 | /* Disable bottom-halves when entering TX path */ |
456 | local_bh_disable(); | |
24afba76 LK |
457 | spin_lock(&mvmsta->lock); |
458 | skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); | |
459 | spin_unlock(&mvmsta->lock); | |
460 | ||
24afba76 LK |
461 | while ((skb = __skb_dequeue(&deferred_tx))) |
462 | if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) | |
463 | ieee80211_free_txskb(mvm->hw, skb); | |
464 | local_bh_enable(); | |
465 | ||
466 | /* Wake queue */ | |
467 | iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); | |
468 | } | |
469 | ||
470 | void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) | |
471 | { | |
472 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, | |
473 | add_stream_wk); | |
474 | struct ieee80211_sta *sta; | |
475 | struct iwl_mvm_sta *mvmsta; | |
476 | unsigned long deferred_tid_traffic; | |
477 | int sta_id, tid; | |
478 | ||
479 | mutex_lock(&mvm->mutex); | |
480 | ||
481 | /* Go over all stations with deferred traffic */ | |
482 | for_each_set_bit(sta_id, mvm->sta_deferred_frames, | |
483 | IWL_MVM_STATION_COUNT) { | |
484 | clear_bit(sta_id, mvm->sta_deferred_frames); | |
485 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
486 | lockdep_is_held(&mvm->mutex)); | |
487 | if (IS_ERR_OR_NULL(sta)) | |
488 | continue; | |
489 | ||
490 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
491 | deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; | |
492 | ||
493 | for_each_set_bit(tid, &deferred_tid_traffic, | |
494 | IWL_MAX_TID_COUNT + 1) | |
495 | iwl_mvm_tx_deferred_stream(mvm, sta, tid); | |
496 | } | |
497 | ||
498 | mutex_unlock(&mvm->mutex); | |
499 | } | |
500 | ||
501 | static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, | |
d5216a28 LK |
502 | struct ieee80211_sta *sta, |
503 | enum nl80211_iftype vif_type) | |
24afba76 LK |
504 | { |
505 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
506 | int queue; | |
507 | ||
508 | spin_lock_bh(&mvm->queue_info_lock); | |
509 | ||
510 | /* Make sure we have free resources for this STA */ | |
d5216a28 LK |
511 | if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && |
512 | !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount && | |
cf961e16 LK |
513 | (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == |
514 | IWL_MVM_QUEUE_FREE)) | |
d5216a28 LK |
515 | queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; |
516 | else | |
517 | queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_DATA_QUEUE, | |
518 | IWL_MVM_DQA_MAX_DATA_QUEUE); | |
24afba76 LK |
519 | if (queue < 0) { |
520 | spin_unlock_bh(&mvm->queue_info_lock); | |
521 | IWL_ERR(mvm, "No available queues for new station\n"); | |
522 | return -ENOSPC; | |
523 | } | |
cf961e16 | 524 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; |
24afba76 LK |
525 | |
526 | spin_unlock_bh(&mvm->queue_info_lock); | |
527 | ||
528 | mvmsta->reserved_queue = queue; | |
529 | ||
530 | IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", | |
531 | queue, mvmsta->sta_id); | |
532 | ||
533 | return 0; | |
534 | } | |
535 | ||
8ca151b5 JB |
536 | int iwl_mvm_add_sta(struct iwl_mvm *mvm, |
537 | struct ieee80211_vif *vif, | |
538 | struct ieee80211_sta *sta) | |
539 | { | |
540 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 541 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
a571f5f6 | 542 | struct iwl_mvm_rxq_dup_data *dup_data; |
8ca151b5 JB |
543 | int i, ret, sta_id; |
544 | ||
545 | lockdep_assert_held(&mvm->mutex); | |
546 | ||
547 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) | |
b92e661b EP |
548 | sta_id = iwl_mvm_find_free_sta_id(mvm, |
549 | ieee80211_vif_type_p2p(vif)); | |
8ca151b5 JB |
550 | else |
551 | sta_id = mvm_sta->sta_id; | |
552 | ||
36f4631c | 553 | if (sta_id == IWL_MVM_STATION_COUNT) |
8ca151b5 JB |
554 | return -ENOSPC; |
555 | ||
556 | spin_lock_init(&mvm_sta->lock); | |
557 | ||
558 | mvm_sta->sta_id = sta_id; | |
559 | mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, | |
560 | mvmvif->color); | |
561 | mvm_sta->vif = vif; | |
562 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
9ee718aa EL |
563 | mvm_sta->tx_protection = 0; |
564 | mvm_sta->tt_tx_protection = false; | |
8ca151b5 JB |
565 | |
566 | /* HW restart, don't assume the memory has been zeroed */ | |
e3d4bc8c | 567 | atomic_set(&mvm->pending_frames[sta_id], 0); |
69191afe | 568 | mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ |
8ca151b5 | 569 | mvm_sta->tfd_queue_msk = 0; |
a0f6bf2a AN |
570 | |
571 | /* allocate new queues for a TDLS station */ | |
572 | if (sta->tdls) { | |
573 | ret = iwl_mvm_tdls_sta_init(mvm, sta); | |
574 | if (ret) | |
575 | return ret; | |
24afba76 | 576 | } else if (!iwl_mvm_is_dqa_supported(mvm)) { |
a0f6bf2a AN |
577 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
578 | if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) | |
579 | mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); | |
580 | } | |
8ca151b5 | 581 | |
6d9d32b8 | 582 | /* for HW restart - reset everything but the sequence number */ |
24afba76 | 583 | for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { |
6d9d32b8 JB |
584 | u16 seq = mvm_sta->tid_data[i].seq_number; |
585 | memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); | |
586 | mvm_sta->tid_data[i].seq_number = seq; | |
24afba76 LK |
587 | |
588 | if (!iwl_mvm_is_dqa_supported(mvm)) | |
589 | continue; | |
590 | ||
591 | /* | |
592 | * Mark all queues for this STA as unallocated and defer TX | |
593 | * frames until the queue is allocated | |
594 | */ | |
595 | mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; | |
596 | skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); | |
6d9d32b8 | 597 | } |
24afba76 | 598 | mvm_sta->deferred_traffic_tid_map = 0; |
efed6640 | 599 | mvm_sta->agg_tids = 0; |
8ca151b5 | 600 | |
a571f5f6 SS |
601 | if (iwl_mvm_has_new_rx_api(mvm) && |
602 | !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
603 | dup_data = kcalloc(mvm->trans->num_rx_queues, | |
604 | sizeof(*dup_data), | |
605 | GFP_KERNEL); | |
606 | if (!dup_data) | |
607 | return -ENOMEM; | |
608 | mvm_sta->dup_data = dup_data; | |
609 | } | |
610 | ||
24afba76 | 611 | if (iwl_mvm_is_dqa_supported(mvm)) { |
d5216a28 LK |
612 | ret = iwl_mvm_reserve_sta_stream(mvm, sta, |
613 | ieee80211_vif_type_p2p(vif)); | |
24afba76 LK |
614 | if (ret) |
615 | goto err; | |
616 | } | |
617 | ||
618 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0); | |
8ca151b5 | 619 | if (ret) |
a0f6bf2a | 620 | goto err; |
8ca151b5 | 621 | |
9e848010 JB |
622 | if (vif->type == NL80211_IFTYPE_STATION) { |
623 | if (!sta->tdls) { | |
624 | WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); | |
625 | mvmvif->ap_sta_id = sta_id; | |
626 | } else { | |
627 | WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); | |
628 | } | |
629 | } | |
8ca151b5 JB |
630 | |
631 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); | |
632 | ||
633 | return 0; | |
a0f6bf2a AN |
634 | |
635 | err: | |
636 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
637 | return ret; | |
8ca151b5 JB |
638 | } |
639 | ||
7a453973 JB |
640 | int iwl_mvm_update_sta(struct iwl_mvm *mvm, |
641 | struct ieee80211_vif *vif, | |
642 | struct ieee80211_sta *sta) | |
643 | { | |
24afba76 | 644 | return iwl_mvm_sta_send_to_fw(mvm, sta, true, 0); |
7a453973 JB |
645 | } |
646 | ||
8ca151b5 JB |
647 | int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, |
648 | bool drain) | |
649 | { | |
f9dc0004 | 650 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
651 | int ret; |
652 | u32 status; | |
653 | ||
654 | lockdep_assert_held(&mvm->mutex); | |
655 | ||
656 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
657 | cmd.sta_id = mvmsta->sta_id; | |
658 | cmd.add_modify = STA_MODE_MODIFY; | |
659 | cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; | |
660 | cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); | |
661 | ||
662 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
663 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
664 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 665 | &cmd, &status); |
8ca151b5 JB |
666 | if (ret) |
667 | return ret; | |
668 | ||
837c4da9 | 669 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
670 | case ADD_STA_SUCCESS: |
671 | IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", | |
672 | mvmsta->sta_id); | |
673 | break; | |
674 | default: | |
675 | ret = -EIO; | |
676 | IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", | |
677 | mvmsta->sta_id); | |
678 | break; | |
679 | } | |
680 | ||
681 | return ret; | |
682 | } | |
683 | ||
684 | /* | |
685 | * Remove a station from the FW table. Before sending the command to remove | |
686 | * the station validate that the station is indeed known to the driver (sanity | |
687 | * only). | |
688 | */ | |
689 | static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) | |
690 | { | |
691 | struct ieee80211_sta *sta; | |
692 | struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { | |
693 | .sta_id = sta_id, | |
694 | }; | |
695 | int ret; | |
696 | ||
697 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
698 | lockdep_is_held(&mvm->mutex)); | |
699 | ||
700 | /* Note: internal stations are marked as error values */ | |
701 | if (!sta) { | |
702 | IWL_ERR(mvm, "Invalid station id\n"); | |
703 | return -EINVAL; | |
704 | } | |
705 | ||
a1022927 | 706 | ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, |
8ca151b5 JB |
707 | sizeof(rm_sta_cmd), &rm_sta_cmd); |
708 | if (ret) { | |
709 | IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); | |
710 | return ret; | |
711 | } | |
712 | ||
713 | return 0; | |
714 | } | |
715 | ||
716 | void iwl_mvm_sta_drained_wk(struct work_struct *wk) | |
717 | { | |
718 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); | |
719 | u8 sta_id; | |
720 | ||
721 | /* | |
722 | * The mutex is needed because of the SYNC cmd, but not only: if the | |
723 | * work would run concurrently with iwl_mvm_rm_sta, it would run before | |
724 | * iwl_mvm_rm_sta sets the station as busy, and exit. Then | |
725 | * iwl_mvm_rm_sta would set the station as busy, and nobody will clean | |
726 | * that later. | |
727 | */ | |
728 | mutex_lock(&mvm->mutex); | |
729 | ||
730 | for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { | |
731 | int ret; | |
732 | struct ieee80211_sta *sta = | |
733 | rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
734 | lockdep_is_held(&mvm->mutex)); | |
735 | ||
1ddbbb0c JB |
736 | /* |
737 | * This station is in use or RCU-removed; the latter happens in | |
738 | * managed mode, where mac80211 removes the station before we | |
739 | * can remove it from firmware (we can only do that after the | |
740 | * MAC is marked unassociated), and possibly while the deauth | |
741 | * frame to disconnect from the AP is still queued. Then, the | |
742 | * station pointer is -ENOENT when the last skb is reclaimed. | |
743 | */ | |
744 | if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) | |
8ca151b5 JB |
745 | continue; |
746 | ||
747 | if (PTR_ERR(sta) == -EINVAL) { | |
748 | IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", | |
749 | sta_id); | |
750 | continue; | |
751 | } | |
752 | ||
753 | if (!sta) { | |
754 | IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", | |
755 | sta_id); | |
756 | continue; | |
757 | } | |
758 | ||
759 | WARN_ON(PTR_ERR(sta) != -EBUSY); | |
760 | /* This station was removed and we waited until it got drained, | |
761 | * we can now proceed and remove it. | |
762 | */ | |
763 | ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
764 | if (ret) { | |
765 | IWL_ERR(mvm, | |
766 | "Couldn't remove sta %d after it was drained\n", | |
767 | sta_id); | |
768 | continue; | |
769 | } | |
c531c771 | 770 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 | 771 | clear_bit(sta_id, mvm->sta_drained); |
a0f6bf2a AN |
772 | |
773 | if (mvm->tfd_drained[sta_id]) { | |
774 | unsigned long i, msk = mvm->tfd_drained[sta_id]; | |
775 | ||
a4ca3ed4 | 776 | for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) |
06ecdba3 AN |
777 | iwl_mvm_disable_txq(mvm, i, i, |
778 | IWL_MAX_TID_COUNT, 0); | |
a0f6bf2a AN |
779 | |
780 | mvm->tfd_drained[sta_id] = 0; | |
781 | IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", | |
782 | sta_id, msk); | |
783 | } | |
8ca151b5 JB |
784 | } |
785 | ||
786 | mutex_unlock(&mvm->mutex); | |
787 | } | |
788 | ||
24afba76 LK |
789 | static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, |
790 | struct ieee80211_vif *vif, | |
791 | struct iwl_mvm_sta *mvm_sta) | |
792 | { | |
793 | int ac; | |
794 | int i; | |
795 | ||
796 | lockdep_assert_held(&mvm->mutex); | |
797 | ||
798 | for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { | |
799 | if (mvm_sta->tid_data[i].txq_id == IEEE80211_INVAL_HW_QUEUE) | |
800 | continue; | |
801 | ||
802 | ac = iwl_mvm_tid_to_ac_queue(i); | |
803 | iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, | |
804 | vif->hw_queue[ac], i, 0); | |
805 | mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; | |
806 | } | |
807 | } | |
808 | ||
8ca151b5 JB |
809 | int iwl_mvm_rm_sta(struct iwl_mvm *mvm, |
810 | struct ieee80211_vif *vif, | |
811 | struct ieee80211_sta *sta) | |
812 | { | |
813 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 814 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
815 | int ret; |
816 | ||
817 | lockdep_assert_held(&mvm->mutex); | |
818 | ||
a571f5f6 SS |
819 | if (iwl_mvm_has_new_rx_api(mvm)) |
820 | kfree(mvm_sta->dup_data); | |
821 | ||
8ca151b5 JB |
822 | if (vif->type == NL80211_IFTYPE_STATION && |
823 | mvmvif->ap_sta_id == mvm_sta->sta_id) { | |
fe92e32a EG |
824 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
825 | if (ret) | |
826 | return ret; | |
80d85655 | 827 | /* flush its queues here since we are freeing mvm_sta */ |
5888a40c | 828 | ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); |
fe92e32a EG |
829 | if (ret) |
830 | return ret; | |
831 | ret = iwl_trans_wait_tx_queue_empty(mvm->trans, | |
832 | mvm_sta->tfd_queue_msk); | |
833 | if (ret) | |
834 | return ret; | |
835 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); | |
80d85655 | 836 | |
24afba76 LK |
837 | /* If DQA is supported - the queues can be disabled now */ |
838 | if (iwl_mvm_is_dqa_supported(mvm)) | |
839 | iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); | |
840 | ||
8ca151b5 JB |
841 | /* if we are associated - we can't remove the AP STA now */ |
842 | if (vif->bss_conf.assoc) | |
843 | return ret; | |
844 | ||
845 | /* unassoc - go ahead - remove the AP STA now */ | |
846 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
37577fe2 EP |
847 | |
848 | /* clear d0i3_ap_sta_id if no longer relevant */ | |
849 | if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) | |
850 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
8ca151b5 JB |
851 | } |
852 | ||
1d3c3f63 AN |
853 | /* |
854 | * This shouldn't happen - the TDLS channel switch should be canceled | |
855 | * before the STA is removed. | |
856 | */ | |
857 | if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { | |
858 | mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; | |
859 | cancel_delayed_work(&mvm->tdls_cs.dwork); | |
860 | } | |
861 | ||
e3d4bc8c EG |
862 | /* |
863 | * Make sure that the tx response code sees the station as -EBUSY and | |
864 | * calls the drain worker. | |
865 | */ | |
866 | spin_lock_bh(&mvm_sta->lock); | |
8ca151b5 JB |
867 | /* |
868 | * There are frames pending on the AC queues for this station. | |
869 | * We need to wait until all the frames are drained... | |
870 | */ | |
e3d4bc8c | 871 | if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { |
8ca151b5 JB |
872 | rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], |
873 | ERR_PTR(-EBUSY)); | |
e3d4bc8c | 874 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
875 | |
876 | /* disable TDLS sta queues on drain complete */ | |
877 | if (sta->tdls) { | |
878 | mvm->tfd_drained[mvm_sta->sta_id] = | |
879 | mvm_sta->tfd_queue_msk; | |
880 | IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", | |
881 | mvm_sta->sta_id); | |
882 | } | |
883 | ||
e3d4bc8c | 884 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
8ca151b5 | 885 | } else { |
e3d4bc8c | 886 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
887 | |
888 | if (sta->tdls) | |
889 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
890 | ||
8ca151b5 | 891 | ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); |
c531c771 | 892 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); |
8ca151b5 JB |
893 | } |
894 | ||
895 | return ret; | |
896 | } | |
897 | ||
898 | int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, | |
899 | struct ieee80211_vif *vif, | |
900 | u8 sta_id) | |
901 | { | |
902 | int ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
903 | ||
904 | lockdep_assert_held(&mvm->mutex); | |
905 | ||
c531c771 | 906 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 JB |
907 | return ret; |
908 | } | |
909 | ||
0e39eb03 CRI |
910 | int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, |
911 | struct iwl_mvm_int_sta *sta, | |
912 | u32 qmask, enum nl80211_iftype iftype) | |
8ca151b5 JB |
913 | { |
914 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
b92e661b | 915 | sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); |
8ca151b5 JB |
916 | if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) |
917 | return -ENOSPC; | |
918 | } | |
919 | ||
920 | sta->tfd_queue_msk = qmask; | |
921 | ||
922 | /* put a non-NULL value so iterating over the stations won't stop */ | |
923 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); | |
924 | return 0; | |
925 | } | |
926 | ||
712b24ad JB |
927 | static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, |
928 | struct iwl_mvm_int_sta *sta) | |
8ca151b5 | 929 | { |
c531c771 | 930 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); |
8ca151b5 JB |
931 | memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); |
932 | sta->sta_id = IWL_MVM_STATION_COUNT; | |
933 | } | |
934 | ||
935 | static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, | |
936 | struct iwl_mvm_int_sta *sta, | |
937 | const u8 *addr, | |
938 | u16 mac_id, u16 color) | |
939 | { | |
f9dc0004 | 940 | struct iwl_mvm_add_sta_cmd cmd; |
8ca151b5 JB |
941 | int ret; |
942 | u32 status; | |
943 | ||
944 | lockdep_assert_held(&mvm->mutex); | |
945 | ||
f9dc0004 | 946 | memset(&cmd, 0, sizeof(cmd)); |
8ca151b5 JB |
947 | cmd.sta_id = sta->sta_id; |
948 | cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, | |
949 | color)); | |
950 | ||
951 | cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); | |
cf0cda19 | 952 | cmd.tid_disable_tx = cpu_to_le16(0xffff); |
8ca151b5 JB |
953 | |
954 | if (addr) | |
955 | memcpy(cmd.addr, addr, ETH_ALEN); | |
956 | ||
854c5705 SS |
957 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
958 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 959 | &cmd, &status); |
8ca151b5 JB |
960 | if (ret) |
961 | return ret; | |
962 | ||
837c4da9 | 963 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
964 | case ADD_STA_SUCCESS: |
965 | IWL_DEBUG_INFO(mvm, "Internal station added.\n"); | |
966 | return 0; | |
967 | default: | |
968 | ret = -EIO; | |
969 | IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", | |
970 | status); | |
971 | break; | |
972 | } | |
973 | return ret; | |
974 | } | |
975 | ||
976 | int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) | |
977 | { | |
4cf677fd EG |
978 | unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? |
979 | mvm->cfg->base_params->wd_timeout : | |
980 | IWL_WATCHDOG_DISABLED; | |
8ca151b5 JB |
981 | int ret; |
982 | ||
983 | lockdep_assert_held(&mvm->mutex); | |
984 | ||
7da91b0e | 985 | /* Map Aux queue to fifo - needs to happen before adding Aux station */ |
4ecafae9 | 986 | iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, |
5c1156ef | 987 | IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); |
7da91b0e AM |
988 | |
989 | /* Allocate aux station and assign to it the aux queue */ | |
990 | ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), | |
b92e661b | 991 | NL80211_IFTYPE_UNSPECIFIED); |
8ca151b5 JB |
992 | if (ret) |
993 | return ret; | |
994 | ||
995 | ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, | |
996 | MAC_INDEX_AUX, 0); | |
997 | ||
998 | if (ret) | |
999 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
1000 | return ret; | |
1001 | } | |
1002 | ||
0e39eb03 CRI |
1003 | int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
1004 | { | |
1005 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1006 | ||
1007 | lockdep_assert_held(&mvm->mutex); | |
1008 | return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, | |
1009 | mvmvif->id, 0); | |
1010 | } | |
1011 | ||
1012 | int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1013 | { | |
1014 | int ret; | |
1015 | ||
1016 | lockdep_assert_held(&mvm->mutex); | |
1017 | ||
1018 | ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); | |
1019 | if (ret) | |
1020 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
1021 | ||
1022 | return ret; | |
1023 | } | |
1024 | ||
1025 | void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) | |
1026 | { | |
1027 | iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); | |
1028 | } | |
1029 | ||
712b24ad JB |
1030 | void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) |
1031 | { | |
1032 | lockdep_assert_held(&mvm->mutex); | |
1033 | ||
1034 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
1035 | } | |
1036 | ||
8ca151b5 JB |
1037 | /* |
1038 | * Send the add station command for the vif's broadcast station. | |
1039 | * Assumes that the station was already allocated. | |
1040 | * | |
1041 | * @mvm: the mvm component | |
1042 | * @vif: the interface to which the broadcast station is added | |
1043 | * @bsta: the broadcast station to add. | |
1044 | */ | |
013290aa | 1045 | int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
1046 | { |
1047 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 1048 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
5023d966 | 1049 | static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
a4243402 | 1050 | const u8 *baddr = _baddr; |
8ca151b5 JB |
1051 | |
1052 | lockdep_assert_held(&mvm->mutex); | |
1053 | ||
de24f638 LK |
1054 | if (iwl_mvm_is_dqa_supported(mvm)) { |
1055 | struct iwl_trans_txq_scd_cfg cfg = { | |
1056 | .fifo = IWL_MVM_TX_FIFO_VO, | |
1057 | .sta_id = mvmvif->bcast_sta.sta_id, | |
1058 | .tid = IWL_MAX_TID_COUNT, | |
1059 | .aggregate = false, | |
1060 | .frame_limit = IWL_FRAME_LIMIT, | |
1061 | }; | |
1062 | unsigned int wdg_timeout = | |
1063 | iwl_mvm_get_wd_timeout(mvm, vif, false, false); | |
1064 | int queue; | |
1065 | ||
1066 | if ((vif->type == NL80211_IFTYPE_AP) && | |
1067 | (mvmvif->bcast_sta.tfd_queue_msk & | |
1068 | BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE))) | |
1069 | queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; | |
4c965139 LK |
1070 | else if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) && |
1071 | (mvmvif->bcast_sta.tfd_queue_msk & | |
1072 | BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE))) | |
1073 | queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE; | |
de24f638 LK |
1074 | else if (WARN(1, "Missed required TXQ for adding bcast STA\n")) |
1075 | return -EINVAL; | |
1076 | ||
1077 | iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, &cfg, | |
1078 | wdg_timeout); | |
1079 | } | |
1080 | ||
5023d966 JB |
1081 | if (vif->type == NL80211_IFTYPE_ADHOC) |
1082 | baddr = vif->bss_conf.bssid; | |
1083 | ||
8ca151b5 JB |
1084 | if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) |
1085 | return -ENOSPC; | |
1086 | ||
1087 | return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, | |
1088 | mvmvif->id, mvmvif->color); | |
1089 | } | |
1090 | ||
1091 | /* Send the FW a request to remove the station from it's internal data | |
1092 | * structures, but DO NOT remove the entry from the local data structures. */ | |
013290aa | 1093 | int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 | 1094 | { |
013290aa | 1095 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1096 | int ret; |
1097 | ||
1098 | lockdep_assert_held(&mvm->mutex); | |
1099 | ||
013290aa | 1100 | ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); |
8ca151b5 JB |
1101 | if (ret) |
1102 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
1103 | return ret; | |
1104 | } | |
1105 | ||
013290aa JB |
1106 | int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
1107 | { | |
1108 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
de24f638 | 1109 | u32 qmask = 0; |
013290aa JB |
1110 | |
1111 | lockdep_assert_held(&mvm->mutex); | |
1112 | ||
de24f638 LK |
1113 | if (!iwl_mvm_is_dqa_supported(mvm)) |
1114 | qmask = iwl_mvm_mac_get_queues_mask(vif); | |
013290aa | 1115 | |
de24f638 LK |
1116 | if (vif->type == NL80211_IFTYPE_AP) { |
1117 | /* | |
1118 | * The firmware defines the TFD queue mask to only be relevant | |
1119 | * for *unicast* queues, so the multicast (CAB) queue shouldn't | |
1120 | * be included. | |
1121 | */ | |
013290aa JB |
1122 | qmask &= ~BIT(vif->cab_queue); |
1123 | ||
de24f638 LK |
1124 | if (iwl_mvm_is_dqa_supported(mvm)) |
1125 | qmask |= BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE); | |
4c965139 LK |
1126 | } else if (iwl_mvm_is_dqa_supported(mvm) && |
1127 | vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
1128 | qmask |= BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE); | |
de24f638 LK |
1129 | } |
1130 | ||
013290aa JB |
1131 | return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, |
1132 | ieee80211_vif_type_p2p(vif)); | |
1133 | } | |
1134 | ||
8ca151b5 JB |
1135 | /* Allocate a new station entry for the broadcast station to the given vif, |
1136 | * and send it to the FW. | |
1137 | * Note that each P2P mac should have its own broadcast station. | |
1138 | * | |
1139 | * @mvm: the mvm component | |
1140 | * @vif: the interface to which the broadcast station is added | |
1141 | * @bsta: the broadcast station to add. */ | |
013290aa | 1142 | int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
1143 | { |
1144 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 1145 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
8ca151b5 JB |
1146 | int ret; |
1147 | ||
1148 | lockdep_assert_held(&mvm->mutex); | |
1149 | ||
013290aa | 1150 | ret = iwl_mvm_alloc_bcast_sta(mvm, vif); |
8ca151b5 JB |
1151 | if (ret) |
1152 | return ret; | |
1153 | ||
013290aa | 1154 | ret = iwl_mvm_send_add_bcast_sta(mvm, vif); |
8ca151b5 JB |
1155 | |
1156 | if (ret) | |
1157 | iwl_mvm_dealloc_int_sta(mvm, bsta); | |
013290aa | 1158 | |
8ca151b5 JB |
1159 | return ret; |
1160 | } | |
1161 | ||
013290aa JB |
1162 | void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
1163 | { | |
1164 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1165 | ||
1166 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
1167 | } | |
1168 | ||
8ca151b5 JB |
1169 | /* |
1170 | * Send the FW a request to remove the station from it's internal data | |
1171 | * structures, and in addition remove it from the local data structure. | |
1172 | */ | |
013290aa | 1173 | int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
1174 | { |
1175 | int ret; | |
1176 | ||
1177 | lockdep_assert_held(&mvm->mutex); | |
1178 | ||
013290aa JB |
1179 | ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); |
1180 | ||
1181 | iwl_mvm_dealloc_bcast_sta(mvm, vif); | |
8ca151b5 | 1182 | |
8ca151b5 JB |
1183 | return ret; |
1184 | } | |
1185 | ||
113a0447 EG |
1186 | #define IWL_MAX_RX_BA_SESSIONS 16 |
1187 | ||
b915c101 | 1188 | static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) |
10b2b201 | 1189 | { |
b915c101 SS |
1190 | struct iwl_mvm_delba_notif notif = { |
1191 | .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA, | |
1192 | .metadata.sync = 1, | |
1193 | .delba.baid = baid, | |
10b2b201 | 1194 | }; |
b915c101 SS |
1195 | iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); |
1196 | }; | |
10b2b201 | 1197 | |
b915c101 SS |
1198 | static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, |
1199 | struct iwl_mvm_baid_data *data) | |
1200 | { | |
1201 | int i; | |
1202 | ||
1203 | iwl_mvm_sync_rxq_del_ba(mvm, data->baid); | |
1204 | ||
1205 | for (i = 0; i < mvm->trans->num_rx_queues; i++) { | |
1206 | int j; | |
1207 | struct iwl_mvm_reorder_buffer *reorder_buf = | |
1208 | &data->reorder_buf[i]; | |
1209 | ||
0690405f SS |
1210 | spin_lock_bh(&reorder_buf->lock); |
1211 | if (likely(!reorder_buf->num_stored)) { | |
1212 | spin_unlock_bh(&reorder_buf->lock); | |
b915c101 | 1213 | continue; |
0690405f | 1214 | } |
b915c101 SS |
1215 | |
1216 | /* | |
1217 | * This shouldn't happen in regular DELBA since the internal | |
1218 | * delBA notification should trigger a release of all frames in | |
1219 | * the reorder buffer. | |
1220 | */ | |
1221 | WARN_ON(1); | |
1222 | ||
1223 | for (j = 0; j < reorder_buf->buf_size; j++) | |
1224 | __skb_queue_purge(&reorder_buf->entries[j]); | |
0690405f SS |
1225 | /* |
1226 | * Prevent timer re-arm. This prevents a very far fetched case | |
1227 | * where we timed out on the notification. There may be prior | |
1228 | * RX frames pending in the RX queue before the notification | |
1229 | * that might get processed between now and the actual deletion | |
1230 | * and we would re-arm the timer although we are deleting the | |
1231 | * reorder buffer. | |
1232 | */ | |
1233 | reorder_buf->removed = true; | |
1234 | spin_unlock_bh(&reorder_buf->lock); | |
1235 | del_timer_sync(&reorder_buf->reorder_timer); | |
b915c101 SS |
1236 | } |
1237 | } | |
1238 | ||
1239 | static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, | |
1240 | u32 sta_id, | |
1241 | struct iwl_mvm_baid_data *data, | |
1242 | u16 ssn, u8 buf_size) | |
1243 | { | |
1244 | int i; | |
1245 | ||
1246 | for (i = 0; i < mvm->trans->num_rx_queues; i++) { | |
1247 | struct iwl_mvm_reorder_buffer *reorder_buf = | |
1248 | &data->reorder_buf[i]; | |
1249 | int j; | |
1250 | ||
1251 | reorder_buf->num_stored = 0; | |
1252 | reorder_buf->head_sn = ssn; | |
1253 | reorder_buf->buf_size = buf_size; | |
0690405f SS |
1254 | /* rx reorder timer */ |
1255 | reorder_buf->reorder_timer.function = | |
1256 | iwl_mvm_reorder_timer_expired; | |
1257 | reorder_buf->reorder_timer.data = (unsigned long)reorder_buf; | |
1258 | init_timer(&reorder_buf->reorder_timer); | |
1259 | spin_lock_init(&reorder_buf->lock); | |
1260 | reorder_buf->mvm = mvm; | |
b915c101 SS |
1261 | reorder_buf->queue = i; |
1262 | reorder_buf->sta_id = sta_id; | |
1263 | for (j = 0; j < reorder_buf->buf_size; j++) | |
1264 | __skb_queue_head_init(&reorder_buf->entries[j]); | |
1265 | } | |
10b2b201 SS |
1266 | } |
1267 | ||
8ca151b5 | 1268 | int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
10b2b201 | 1269 | int tid, u16 ssn, bool start, u8 buf_size, u16 timeout) |
8ca151b5 | 1270 | { |
9d8ce6af | 1271 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1272 | struct iwl_mvm_add_sta_cmd cmd = {}; |
10b2b201 | 1273 | struct iwl_mvm_baid_data *baid_data = NULL; |
8ca151b5 JB |
1274 | int ret; |
1275 | u32 status; | |
1276 | ||
1277 | lockdep_assert_held(&mvm->mutex); | |
1278 | ||
113a0447 EG |
1279 | if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { |
1280 | IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); | |
1281 | return -ENOSPC; | |
1282 | } | |
1283 | ||
10b2b201 SS |
1284 | if (iwl_mvm_has_new_rx_api(mvm) && start) { |
1285 | /* | |
1286 | * Allocate here so if allocation fails we can bail out early | |
1287 | * before starting the BA session in the firmware | |
1288 | */ | |
b915c101 SS |
1289 | baid_data = kzalloc(sizeof(*baid_data) + |
1290 | mvm->trans->num_rx_queues * | |
1291 | sizeof(baid_data->reorder_buf[0]), | |
1292 | GFP_KERNEL); | |
10b2b201 SS |
1293 | if (!baid_data) |
1294 | return -ENOMEM; | |
1295 | } | |
1296 | ||
8ca151b5 JB |
1297 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
1298 | cmd.sta_id = mvm_sta->sta_id; | |
1299 | cmd.add_modify = STA_MODE_MODIFY; | |
93a42667 EG |
1300 | if (start) { |
1301 | cmd.add_immediate_ba_tid = (u8) tid; | |
1302 | cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
854c5705 | 1303 | cmd.rx_ba_window = cpu_to_le16((u16)buf_size); |
93a42667 EG |
1304 | } else { |
1305 | cmd.remove_immediate_ba_tid = (u8) tid; | |
1306 | } | |
8ca151b5 JB |
1307 | cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : |
1308 | STA_MODIFY_REMOVE_BA_TID; | |
1309 | ||
1310 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
1311 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
1312 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 1313 | &cmd, &status); |
8ca151b5 | 1314 | if (ret) |
10b2b201 | 1315 | goto out_free; |
8ca151b5 | 1316 | |
837c4da9 | 1317 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
1318 | case ADD_STA_SUCCESS: |
1319 | IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", | |
1320 | start ? "start" : "stopp"); | |
1321 | break; | |
1322 | case ADD_STA_IMMEDIATE_BA_FAILURE: | |
1323 | IWL_WARN(mvm, "RX BA Session refused by fw\n"); | |
1324 | ret = -ENOSPC; | |
1325 | break; | |
1326 | default: | |
1327 | ret = -EIO; | |
1328 | IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", | |
1329 | start ? "start" : "stopp", status); | |
1330 | break; | |
1331 | } | |
1332 | ||
10b2b201 SS |
1333 | if (ret) |
1334 | goto out_free; | |
1335 | ||
1336 | if (start) { | |
1337 | u8 baid; | |
1338 | ||
1339 | mvm->rx_ba_sessions++; | |
1340 | ||
1341 | if (!iwl_mvm_has_new_rx_api(mvm)) | |
1342 | return 0; | |
1343 | ||
1344 | if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { | |
1345 | ret = -EINVAL; | |
1346 | goto out_free; | |
1347 | } | |
1348 | baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> | |
1349 | IWL_ADD_STA_BAID_SHIFT); | |
1350 | baid_data->baid = baid; | |
1351 | baid_data->timeout = timeout; | |
1352 | baid_data->last_rx = jiffies; | |
1353 | init_timer(&baid_data->session_timer); | |
1354 | baid_data->session_timer.function = | |
1355 | iwl_mvm_rx_agg_session_expired; | |
1356 | baid_data->session_timer.data = | |
1357 | (unsigned long)&mvm->baid_map[baid]; | |
1358 | baid_data->mvm = mvm; | |
1359 | baid_data->tid = tid; | |
1360 | baid_data->sta_id = mvm_sta->sta_id; | |
1361 | ||
1362 | mvm_sta->tid_to_baid[tid] = baid; | |
1363 | if (timeout) | |
1364 | mod_timer(&baid_data->session_timer, | |
1365 | TU_TO_EXP_TIME(timeout * 2)); | |
1366 | ||
b915c101 SS |
1367 | iwl_mvm_init_reorder_buffer(mvm, mvm_sta->sta_id, |
1368 | baid_data, ssn, buf_size); | |
10b2b201 SS |
1369 | /* |
1370 | * protect the BA data with RCU to cover a case where our | |
1371 | * internal RX sync mechanism will timeout (not that it's | |
1372 | * supposed to happen) and we will free the session data while | |
1373 | * RX is being processed in parallel | |
1374 | */ | |
1375 | WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); | |
1376 | rcu_assign_pointer(mvm->baid_map[baid], baid_data); | |
1377 | } else if (mvm->rx_ba_sessions > 0) { | |
1378 | u8 baid = mvm_sta->tid_to_baid[tid]; | |
1379 | ||
1380 | /* check that restart flow didn't zero the counter */ | |
1381 | mvm->rx_ba_sessions--; | |
1382 | if (!iwl_mvm_has_new_rx_api(mvm)) | |
1383 | return 0; | |
1384 | ||
1385 | if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) | |
1386 | return -EINVAL; | |
1387 | ||
1388 | baid_data = rcu_access_pointer(mvm->baid_map[baid]); | |
1389 | if (WARN_ON(!baid_data)) | |
1390 | return -EINVAL; | |
1391 | ||
1392 | /* synchronize all rx queues so we can safely delete */ | |
b915c101 | 1393 | iwl_mvm_free_reorder(mvm, baid_data); |
10b2b201 | 1394 | del_timer_sync(&baid_data->session_timer); |
10b2b201 SS |
1395 | RCU_INIT_POINTER(mvm->baid_map[baid], NULL); |
1396 | kfree_rcu(baid_data, rcu_head); | |
113a0447 | 1397 | } |
10b2b201 | 1398 | return 0; |
113a0447 | 1399 | |
10b2b201 SS |
1400 | out_free: |
1401 | kfree(baid_data); | |
8ca151b5 JB |
1402 | return ret; |
1403 | } | |
1404 | ||
1405 | static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
1406 | int tid, u8 queue, bool start) | |
1407 | { | |
9d8ce6af | 1408 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1409 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
1410 | int ret; |
1411 | u32 status; | |
1412 | ||
1413 | lockdep_assert_held(&mvm->mutex); | |
1414 | ||
1415 | if (start) { | |
1416 | mvm_sta->tfd_queue_msk |= BIT(queue); | |
1417 | mvm_sta->tid_disable_agg &= ~BIT(tid); | |
1418 | } else { | |
cf961e16 LK |
1419 | /* In DQA-mode the queue isn't removed on agg termination */ |
1420 | if (!iwl_mvm_is_dqa_supported(mvm)) | |
1421 | mvm_sta->tfd_queue_msk &= ~BIT(queue); | |
8ca151b5 JB |
1422 | mvm_sta->tid_disable_agg |= BIT(tid); |
1423 | } | |
1424 | ||
1425 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); | |
1426 | cmd.sta_id = mvm_sta->sta_id; | |
1427 | cmd.add_modify = STA_MODE_MODIFY; | |
1428 | cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; | |
1429 | cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
1430 | cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); | |
1431 | ||
1432 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
1433 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
1434 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 1435 | &cmd, &status); |
8ca151b5 JB |
1436 | if (ret) |
1437 | return ret; | |
1438 | ||
837c4da9 | 1439 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
1440 | case ADD_STA_SUCCESS: |
1441 | break; | |
1442 | default: | |
1443 | ret = -EIO; | |
1444 | IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", | |
1445 | start ? "start" : "stopp", status); | |
1446 | break; | |
1447 | } | |
1448 | ||
1449 | return ret; | |
1450 | } | |
1451 | ||
b797e3fb | 1452 | const u8 tid_to_mac80211_ac[] = { |
8ca151b5 JB |
1453 | IEEE80211_AC_BE, |
1454 | IEEE80211_AC_BK, | |
1455 | IEEE80211_AC_BK, | |
1456 | IEEE80211_AC_BE, | |
1457 | IEEE80211_AC_VI, | |
1458 | IEEE80211_AC_VI, | |
1459 | IEEE80211_AC_VO, | |
1460 | IEEE80211_AC_VO, | |
1461 | }; | |
1462 | ||
3e56eadf JB |
1463 | static const u8 tid_to_ucode_ac[] = { |
1464 | AC_BE, | |
1465 | AC_BK, | |
1466 | AC_BK, | |
1467 | AC_BE, | |
1468 | AC_VI, | |
1469 | AC_VI, | |
1470 | AC_VO, | |
1471 | AC_VO, | |
1472 | }; | |
1473 | ||
8ca151b5 JB |
1474 | int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1475 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) | |
1476 | { | |
5b577a90 | 1477 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1478 | struct iwl_mvm_tid_data *tid_data; |
1479 | int txq_id; | |
4ecafae9 | 1480 | int ret; |
8ca151b5 JB |
1481 | |
1482 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
1483 | return -EINVAL; | |
1484 | ||
1485 | if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { | |
1486 | IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", | |
1487 | mvmsta->tid_data[tid].state); | |
1488 | return -ENXIO; | |
1489 | } | |
1490 | ||
1491 | lockdep_assert_held(&mvm->mutex); | |
1492 | ||
b2492501 AN |
1493 | spin_lock_bh(&mvmsta->lock); |
1494 | ||
1495 | /* possible race condition - we entered D0i3 while starting agg */ | |
1496 | if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { | |
1497 | spin_unlock_bh(&mvmsta->lock); | |
1498 | IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); | |
1499 | return -EIO; | |
1500 | } | |
1501 | ||
4ecafae9 LK |
1502 | spin_lock_bh(&mvm->queue_info_lock); |
1503 | ||
cf961e16 LK |
1504 | /* |
1505 | * Note the possible cases: | |
1506 | * 1. In DQA mode with an enabled TXQ - TXQ needs to become agg'ed | |
1507 | * 2. Non-DQA mode: the TXQ hasn't yet been enabled, so find a free | |
1508 | * one and mark it as reserved | |
1509 | * 3. In DQA mode, but no traffic yet on this TID: same treatment as in | |
1510 | * non-DQA mode, since the TXQ hasn't yet been allocated | |
1511 | */ | |
1512 | txq_id = mvmsta->tid_data[tid].txq_id; | |
1513 | if (!iwl_mvm_is_dqa_supported(mvm) || | |
1514 | mvm->queue_info[txq_id].status != IWL_MVM_QUEUE_READY) { | |
1515 | txq_id = iwl_mvm_find_free_queue(mvm, mvm->first_agg_queue, | |
1516 | mvm->last_agg_queue); | |
1517 | if (txq_id < 0) { | |
1518 | ret = txq_id; | |
1519 | spin_unlock_bh(&mvm->queue_info_lock); | |
1520 | IWL_ERR(mvm, "Failed to allocate agg queue\n"); | |
1521 | goto release_locks; | |
1522 | } | |
1523 | ||
1524 | /* TXQ hasn't yet been enabled, so mark it only as reserved */ | |
1525 | mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; | |
4ecafae9 | 1526 | } |
4ecafae9 | 1527 | spin_unlock_bh(&mvm->queue_info_lock); |
8ca151b5 | 1528 | |
cf961e16 LK |
1529 | IWL_DEBUG_TX_QUEUES(mvm, |
1530 | "AGG for tid %d will be on queue #%d\n", | |
1531 | tid, txq_id); | |
1532 | ||
8ca151b5 | 1533 | tid_data = &mvmsta->tid_data[tid]; |
9a886586 | 1534 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1535 | tid_data->txq_id = txq_id; |
1536 | *ssn = tid_data->ssn; | |
1537 | ||
1538 | IWL_DEBUG_TX_QUEUES(mvm, | |
1539 | "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", | |
1540 | mvmsta->sta_id, tid, txq_id, tid_data->ssn, | |
1541 | tid_data->next_reclaimed); | |
1542 | ||
1543 | if (tid_data->ssn == tid_data->next_reclaimed) { | |
1544 | tid_data->state = IWL_AGG_STARTING; | |
1545 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1546 | } else { | |
1547 | tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
1548 | } | |
1549 | ||
4ecafae9 LK |
1550 | ret = 0; |
1551 | ||
1552 | release_locks: | |
8ca151b5 JB |
1553 | spin_unlock_bh(&mvmsta->lock); |
1554 | ||
4ecafae9 | 1555 | return ret; |
8ca151b5 JB |
1556 | } |
1557 | ||
1558 | int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
bb81bb68 EG |
1559 | struct ieee80211_sta *sta, u16 tid, u8 buf_size, |
1560 | bool amsdu) | |
8ca151b5 | 1561 | { |
5b577a90 | 1562 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 1563 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
5d42e7b2 EG |
1564 | unsigned int wdg_timeout = |
1565 | iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); | |
eea76c36 | 1566 | int queue, ret; |
cf961e16 | 1567 | bool alloc_queue = true; |
8ca151b5 JB |
1568 | u16 ssn; |
1569 | ||
eea76c36 EG |
1570 | struct iwl_trans_txq_scd_cfg cfg = { |
1571 | .sta_id = mvmsta->sta_id, | |
1572 | .tid = tid, | |
1573 | .frame_limit = buf_size, | |
1574 | .aggregate = true, | |
1575 | }; | |
1576 | ||
efed6640 ES |
1577 | BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) |
1578 | != IWL_MAX_TID_COUNT); | |
1579 | ||
8ca151b5 JB |
1580 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); |
1581 | ||
1582 | spin_lock_bh(&mvmsta->lock); | |
1583 | ssn = tid_data->ssn; | |
1584 | queue = tid_data->txq_id; | |
1585 | tid_data->state = IWL_AGG_ON; | |
efed6640 | 1586 | mvmsta->agg_tids |= BIT(tid); |
8ca151b5 | 1587 | tid_data->ssn = 0xffff; |
bb81bb68 | 1588 | tid_data->amsdu_in_ampdu_allowed = amsdu; |
8ca151b5 JB |
1589 | spin_unlock_bh(&mvmsta->lock); |
1590 | ||
eea76c36 | 1591 | cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; |
8ca151b5 | 1592 | |
cf961e16 LK |
1593 | /* In DQA mode, the existing queue might need to be reconfigured */ |
1594 | if (iwl_mvm_is_dqa_supported(mvm)) { | |
1595 | spin_lock_bh(&mvm->queue_info_lock); | |
1596 | /* Maybe there is no need to even alloc a queue... */ | |
1597 | if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) | |
1598 | alloc_queue = false; | |
1599 | spin_unlock_bh(&mvm->queue_info_lock); | |
1600 | ||
1601 | /* | |
1602 | * Only reconfig the SCD for the queue if the window size has | |
1603 | * changed from current (become smaller) | |
1604 | */ | |
1605 | if (!alloc_queue && buf_size < mvmsta->max_agg_bufsize) { | |
1606 | /* | |
1607 | * If reconfiguring an existing queue, it first must be | |
1608 | * drained | |
1609 | */ | |
1610 | ret = iwl_trans_wait_tx_queue_empty(mvm->trans, | |
1611 | BIT(queue)); | |
1612 | if (ret) { | |
1613 | IWL_ERR(mvm, | |
1614 | "Error draining queue before reconfig\n"); | |
1615 | return ret; | |
1616 | } | |
1617 | ||
1618 | ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, | |
1619 | mvmsta->sta_id, tid, | |
1620 | buf_size, ssn); | |
1621 | if (ret) { | |
1622 | IWL_ERR(mvm, | |
1623 | "Error reconfiguring TXQ #%d\n", queue); | |
1624 | return ret; | |
1625 | } | |
1626 | } | |
1627 | } | |
1628 | ||
1629 | if (alloc_queue) | |
1630 | iwl_mvm_enable_txq(mvm, queue, | |
1631 | vif->hw_queue[tid_to_mac80211_ac[tid]], ssn, | |
1632 | &cfg, wdg_timeout); | |
fa7878e7 | 1633 | |
8ca151b5 JB |
1634 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); |
1635 | if (ret) | |
1636 | return -EIO; | |
1637 | ||
4ecafae9 LK |
1638 | /* No need to mark as reserved */ |
1639 | spin_lock_bh(&mvm->queue_info_lock); | |
cf961e16 | 1640 | mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; |
4ecafae9 LK |
1641 | spin_unlock_bh(&mvm->queue_info_lock); |
1642 | ||
8ca151b5 JB |
1643 | /* |
1644 | * Even though in theory the peer could have different | |
1645 | * aggregation reorder buffer sizes for different sessions, | |
1646 | * our ucode doesn't allow for that and has a global limit | |
1647 | * for each station. Therefore, use the minimum of all the | |
1648 | * aggregation sessions and our default value. | |
1649 | */ | |
1650 | mvmsta->max_agg_bufsize = | |
1651 | min(mvmsta->max_agg_bufsize, buf_size); | |
1652 | mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; | |
1653 | ||
9ee718aa EL |
1654 | IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", |
1655 | sta->addr, tid); | |
1656 | ||
9e680946 | 1657 | return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); |
8ca151b5 JB |
1658 | } |
1659 | ||
1660 | int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1661 | struct ieee80211_sta *sta, u16 tid) | |
1662 | { | |
5b577a90 | 1663 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1664 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1665 | u16 txq_id; | |
1666 | int err; | |
1667 | ||
f9aa8dd3 EG |
1668 | |
1669 | /* | |
1670 | * If mac80211 is cleaning its state, then say that we finished since | |
1671 | * our state has been cleared anyway. | |
1672 | */ | |
1673 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
1674 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1675 | return 0; | |
1676 | } | |
1677 | ||
8ca151b5 JB |
1678 | spin_lock_bh(&mvmsta->lock); |
1679 | ||
1680 | txq_id = tid_data->txq_id; | |
1681 | ||
1682 | IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", | |
1683 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
1684 | ||
efed6640 ES |
1685 | mvmsta->agg_tids &= ~BIT(tid); |
1686 | ||
4ecafae9 | 1687 | spin_lock_bh(&mvm->queue_info_lock); |
cf961e16 LK |
1688 | /* |
1689 | * The TXQ is marked as reserved only if no traffic came through yet | |
1690 | * This means no traffic has been sent on this TID (agg'd or not), so | |
1691 | * we no longer have use for the queue. Since it hasn't even been | |
1692 | * allocated through iwl_mvm_enable_txq, so we can just mark it back as | |
1693 | * free. | |
1694 | */ | |
1695 | if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) | |
1696 | mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; | |
4ecafae9 LK |
1697 | spin_unlock_bh(&mvm->queue_info_lock); |
1698 | ||
8ca151b5 JB |
1699 | switch (tid_data->state) { |
1700 | case IWL_AGG_ON: | |
9a886586 | 1701 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1702 | |
1703 | IWL_DEBUG_TX_QUEUES(mvm, | |
1704 | "ssn = %d, next_recl = %d\n", | |
1705 | tid_data->ssn, tid_data->next_reclaimed); | |
1706 | ||
1707 | /* There are still packets for this RA / TID in the HW */ | |
1708 | if (tid_data->ssn != tid_data->next_reclaimed) { | |
1709 | tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; | |
1710 | err = 0; | |
1711 | break; | |
1712 | } | |
1713 | ||
1714 | tid_data->ssn = 0xffff; | |
f7f89e7b | 1715 | tid_data->state = IWL_AGG_OFF; |
f7f89e7b JB |
1716 | spin_unlock_bh(&mvmsta->lock); |
1717 | ||
1718 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1719 | ||
1720 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); | |
1721 | ||
cf961e16 LK |
1722 | if (!iwl_mvm_is_dqa_supported(mvm)) { |
1723 | int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; | |
1724 | ||
1725 | iwl_mvm_disable_txq(mvm, txq_id, mac_queue, tid, 0); | |
1726 | } | |
f7f89e7b | 1727 | return 0; |
8ca151b5 JB |
1728 | case IWL_AGG_STARTING: |
1729 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
1730 | /* | |
1731 | * The agg session has been stopped before it was set up. This | |
1732 | * can happen when the AddBA timer times out for example. | |
1733 | */ | |
1734 | ||
1735 | /* No barriers since we are under mutex */ | |
1736 | lockdep_assert_held(&mvm->mutex); | |
8ca151b5 JB |
1737 | |
1738 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1739 | tid_data->state = IWL_AGG_OFF; | |
1740 | err = 0; | |
1741 | break; | |
1742 | default: | |
1743 | IWL_ERR(mvm, | |
1744 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
1745 | mvmsta->sta_id, tid, tid_data->state); | |
1746 | IWL_ERR(mvm, | |
1747 | "\ttid_data->txq_id = %d\n", tid_data->txq_id); | |
1748 | err = -EINVAL; | |
1749 | } | |
1750 | ||
1751 | spin_unlock_bh(&mvmsta->lock); | |
1752 | ||
1753 | return err; | |
1754 | } | |
1755 | ||
e3d9e7ce EG |
1756 | int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1757 | struct ieee80211_sta *sta, u16 tid) | |
1758 | { | |
5b577a90 | 1759 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
e3d9e7ce EG |
1760 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1761 | u16 txq_id; | |
b6658ff8 | 1762 | enum iwl_mvm_agg_state old_state; |
e3d9e7ce EG |
1763 | |
1764 | /* | |
1765 | * First set the agg state to OFF to avoid calling | |
1766 | * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. | |
1767 | */ | |
1768 | spin_lock_bh(&mvmsta->lock); | |
1769 | txq_id = tid_data->txq_id; | |
1770 | IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", | |
1771 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
b6658ff8 | 1772 | old_state = tid_data->state; |
e3d9e7ce | 1773 | tid_data->state = IWL_AGG_OFF; |
efed6640 | 1774 | mvmsta->agg_tids &= ~BIT(tid); |
e3d9e7ce EG |
1775 | spin_unlock_bh(&mvmsta->lock); |
1776 | ||
4ecafae9 | 1777 | spin_lock_bh(&mvm->queue_info_lock); |
cf961e16 LK |
1778 | /* |
1779 | * The TXQ is marked as reserved only if no traffic came through yet | |
1780 | * This means no traffic has been sent on this TID (agg'd or not), so | |
1781 | * we no longer have use for the queue. Since it hasn't even been | |
1782 | * allocated through iwl_mvm_enable_txq, so we can just mark it back as | |
1783 | * free. | |
1784 | */ | |
1785 | if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) | |
1786 | mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; | |
4ecafae9 LK |
1787 | spin_unlock_bh(&mvm->queue_info_lock); |
1788 | ||
b6658ff8 | 1789 | if (old_state >= IWL_AGG_ON) { |
fe92e32a | 1790 | iwl_mvm_drain_sta(mvm, mvmsta, true); |
5888a40c | 1791 | if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) |
b6658ff8 | 1792 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); |
fe92e32a EG |
1793 | iwl_trans_wait_tx_queue_empty(mvm->trans, |
1794 | mvmsta->tfd_queue_msk); | |
1795 | iwl_mvm_drain_sta(mvm, mvmsta, false); | |
b6658ff8 | 1796 | |
f7f89e7b JB |
1797 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); |
1798 | ||
cf961e16 LK |
1799 | if (!iwl_mvm_is_dqa_supported(mvm)) { |
1800 | int mac_queue = vif->hw_queue[tid_to_mac80211_ac[tid]]; | |
1801 | ||
1802 | iwl_mvm_disable_txq(mvm, tid_data->txq_id, mac_queue, | |
1803 | tid, 0); | |
1804 | } | |
b6658ff8 | 1805 | } |
e3d9e7ce | 1806 | |
e3d9e7ce EG |
1807 | return 0; |
1808 | } | |
1809 | ||
8ca151b5 JB |
1810 | static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) |
1811 | { | |
2dc2a15e | 1812 | int i, max = -1, max_offs = -1; |
8ca151b5 JB |
1813 | |
1814 | lockdep_assert_held(&mvm->mutex); | |
1815 | ||
2dc2a15e JB |
1816 | /* Pick the unused key offset with the highest 'deleted' |
1817 | * counter. Every time a key is deleted, all the counters | |
1818 | * are incremented and the one that was just deleted is | |
1819 | * reset to zero. Thus, the highest counter is the one | |
1820 | * that was deleted longest ago. Pick that one. | |
1821 | */ | |
1822 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1823 | if (test_bit(i, mvm->fw_key_table)) | |
1824 | continue; | |
1825 | if (mvm->fw_key_deleted[i] > max) { | |
1826 | max = mvm->fw_key_deleted[i]; | |
1827 | max_offs = i; | |
1828 | } | |
1829 | } | |
8ca151b5 | 1830 | |
2dc2a15e | 1831 | if (max_offs < 0) |
8ca151b5 JB |
1832 | return STA_KEY_IDX_INVALID; |
1833 | ||
2dc2a15e | 1834 | return max_offs; |
8ca151b5 JB |
1835 | } |
1836 | ||
5f7a1847 JB |
1837 | static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, |
1838 | struct ieee80211_vif *vif, | |
1839 | struct ieee80211_sta *sta) | |
8ca151b5 | 1840 | { |
5b530e95 | 1841 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 | 1842 | |
5f7a1847 JB |
1843 | if (sta) |
1844 | return iwl_mvm_sta_from_mac80211(sta); | |
8ca151b5 JB |
1845 | |
1846 | /* | |
1847 | * The device expects GTKs for station interfaces to be | |
1848 | * installed as GTKs for the AP station. If we have no | |
1849 | * station ID, then use AP's station ID. | |
1850 | */ | |
1851 | if (vif->type == NL80211_IFTYPE_STATION && | |
9513c5e1 AA |
1852 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { |
1853 | u8 sta_id = mvmvif->ap_sta_id; | |
1854 | ||
7d6a1ab6 EG |
1855 | sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], |
1856 | lockdep_is_held(&mvm->mutex)); | |
1857 | ||
9513c5e1 AA |
1858 | /* |
1859 | * It is possible that the 'sta' parameter is NULL, | |
1860 | * for example when a GTK is removed - the sta_id will then | |
1861 | * be the AP ID, and no station was passed by mac80211. | |
1862 | */ | |
7d6a1ab6 EG |
1863 | if (IS_ERR_OR_NULL(sta)) |
1864 | return NULL; | |
1865 | ||
1866 | return iwl_mvm_sta_from_mac80211(sta); | |
9513c5e1 | 1867 | } |
8ca151b5 | 1868 | |
5f7a1847 | 1869 | return NULL; |
8ca151b5 JB |
1870 | } |
1871 | ||
1872 | static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, | |
1873 | struct iwl_mvm_sta *mvm_sta, | |
ba3943b0 | 1874 | struct ieee80211_key_conf *keyconf, bool mcast, |
d6ee54a9 LC |
1875 | u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, |
1876 | u8 key_offset) | |
8ca151b5 | 1877 | { |
5a258aae | 1878 | struct iwl_mvm_add_sta_key_cmd cmd = {}; |
f9dc0004 | 1879 | __le16 key_flags; |
79920749 JB |
1880 | int ret; |
1881 | u32 status; | |
8ca151b5 JB |
1882 | u16 keyidx; |
1883 | int i; | |
2f6319d1 | 1884 | u8 sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1885 | |
1886 | keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1887 | STA_KEY_FLG_KEYID_MSK; | |
1888 | key_flags = cpu_to_le16(keyidx); | |
1889 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); | |
1890 | ||
1891 | switch (keyconf->cipher) { | |
1892 | case WLAN_CIPHER_SUITE_TKIP: | |
1893 | key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); | |
5a258aae | 1894 | cmd.tkip_rx_tsc_byte2 = tkip_iv32; |
8ca151b5 | 1895 | for (i = 0; i < 5; i++) |
5a258aae MS |
1896 | cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); |
1897 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1898 | break; |
1899 | case WLAN_CIPHER_SUITE_CCMP: | |
1900 | key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); | |
5a258aae | 1901 | memcpy(cmd.key, keyconf->key, keyconf->keylen); |
8ca151b5 | 1902 | break; |
ba3943b0 JB |
1903 | case WLAN_CIPHER_SUITE_WEP104: |
1904 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); | |
aa0cb08b | 1905 | /* fall through */ |
ba3943b0 JB |
1906 | case WLAN_CIPHER_SUITE_WEP40: |
1907 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); | |
1908 | memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); | |
1909 | break; | |
8ca151b5 | 1910 | default: |
e36e5433 MS |
1911 | key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); |
1912 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1913 | } |
1914 | ||
ba3943b0 | 1915 | if (mcast) |
8ca151b5 JB |
1916 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1917 | ||
d6ee54a9 | 1918 | cmd.key_offset = key_offset; |
5a258aae | 1919 | cmd.key_flags = key_flags; |
8ca151b5 JB |
1920 | cmd.sta_id = sta_id; |
1921 | ||
1922 | status = ADD_STA_SUCCESS; | |
a1022927 | 1923 | if (cmd_flags & CMD_ASYNC) |
f9dc0004 EG |
1924 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, |
1925 | sizeof(cmd), &cmd); | |
a1022927 EG |
1926 | else |
1927 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1928 | &cmd, &status); | |
8ca151b5 JB |
1929 | |
1930 | switch (status) { | |
1931 | case ADD_STA_SUCCESS: | |
1932 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); | |
1933 | break; | |
1934 | default: | |
1935 | ret = -EIO; | |
1936 | IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); | |
1937 | break; | |
1938 | } | |
1939 | ||
1940 | return ret; | |
1941 | } | |
1942 | ||
1943 | static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, | |
1944 | struct ieee80211_key_conf *keyconf, | |
1945 | u8 sta_id, bool remove_key) | |
1946 | { | |
1947 | struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; | |
1948 | ||
1949 | /* verify the key details match the required command's expectations */ | |
1950 | if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || | |
1951 | (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || | |
1952 | (keyconf->keyidx != 4 && keyconf->keyidx != 5))) | |
1953 | return -EINVAL; | |
1954 | ||
1955 | igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); | |
1956 | igtk_cmd.sta_id = cpu_to_le32(sta_id); | |
1957 | ||
1958 | if (remove_key) { | |
1959 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); | |
1960 | } else { | |
1961 | struct ieee80211_key_seq seq; | |
1962 | const u8 *pn; | |
1963 | ||
aa950524 AB |
1964 | switch (keyconf->cipher) { |
1965 | case WLAN_CIPHER_SUITE_AES_CMAC: | |
1966 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); | |
1967 | break; | |
1968 | default: | |
1969 | return -EINVAL; | |
1970 | } | |
1971 | ||
8ca151b5 | 1972 | memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); |
8ca151b5 JB |
1973 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); |
1974 | pn = seq.aes_cmac.pn; | |
1975 | igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | | |
1976 | ((u64) pn[4] << 8) | | |
1977 | ((u64) pn[3] << 16) | | |
1978 | ((u64) pn[2] << 24) | | |
1979 | ((u64) pn[1] << 32) | | |
1980 | ((u64) pn[0] << 40)); | |
1981 | } | |
1982 | ||
1983 | IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", | |
1984 | remove_key ? "removing" : "installing", | |
1985 | igtk_cmd.sta_id); | |
1986 | ||
a1022927 | 1987 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
8ca151b5 JB |
1988 | sizeof(igtk_cmd), &igtk_cmd); |
1989 | } | |
1990 | ||
1991 | ||
1992 | static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, | |
1993 | struct ieee80211_vif *vif, | |
1994 | struct ieee80211_sta *sta) | |
1995 | { | |
5b530e95 | 1996 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1997 | |
1998 | if (sta) | |
1999 | return sta->addr; | |
2000 | ||
2001 | if (vif->type == NL80211_IFTYPE_STATION && | |
2002 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { | |
2003 | u8 sta_id = mvmvif->ap_sta_id; | |
2004 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
2005 | lockdep_is_held(&mvm->mutex)); | |
2006 | return sta->addr; | |
2007 | } | |
2008 | ||
2009 | ||
2010 | return NULL; | |
2011 | } | |
2012 | ||
2f6319d1 JB |
2013 | static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
2014 | struct ieee80211_vif *vif, | |
2015 | struct ieee80211_sta *sta, | |
ba3943b0 | 2016 | struct ieee80211_key_conf *keyconf, |
d6ee54a9 | 2017 | u8 key_offset, |
ba3943b0 | 2018 | bool mcast) |
2f6319d1 JB |
2019 | { |
2020 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
2021 | int ret; | |
2022 | const u8 *addr; | |
2023 | struct ieee80211_key_seq seq; | |
2024 | u16 p1k[5]; | |
2025 | ||
2026 | switch (keyconf->cipher) { | |
2027 | case WLAN_CIPHER_SUITE_TKIP: | |
2028 | addr = iwl_mvm_get_mac_addr(mvm, vif, sta); | |
2029 | /* get phase 1 key from mac80211 */ | |
2030 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
2031 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
ba3943b0 | 2032 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 2033 | seq.tkip.iv32, p1k, 0, key_offset); |
2f6319d1 JB |
2034 | break; |
2035 | case WLAN_CIPHER_SUITE_CCMP: | |
ba3943b0 JB |
2036 | case WLAN_CIPHER_SUITE_WEP40: |
2037 | case WLAN_CIPHER_SUITE_WEP104: | |
2038 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, | |
d6ee54a9 | 2039 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
2040 | break; |
2041 | default: | |
ba3943b0 | 2042 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 2043 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
2044 | } |
2045 | ||
2046 | return ret; | |
2047 | } | |
2048 | ||
2049 | static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, | |
ba3943b0 JB |
2050 | struct ieee80211_key_conf *keyconf, |
2051 | bool mcast) | |
2f6319d1 JB |
2052 | { |
2053 | struct iwl_mvm_add_sta_key_cmd cmd = {}; | |
2054 | __le16 key_flags; | |
2055 | int ret; | |
2056 | u32 status; | |
2057 | ||
2058 | key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
2059 | STA_KEY_FLG_KEYID_MSK); | |
2060 | key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); | |
2061 | key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); | |
2062 | ||
ba3943b0 | 2063 | if (mcast) |
2f6319d1 JB |
2064 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
2065 | ||
2066 | cmd.key_flags = key_flags; | |
2067 | cmd.key_offset = keyconf->hw_key_idx; | |
2068 | cmd.sta_id = sta_id; | |
2069 | ||
2070 | status = ADD_STA_SUCCESS; | |
2071 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
2072 | &cmd, &status); | |
2073 | ||
2074 | switch (status) { | |
2075 | case ADD_STA_SUCCESS: | |
2076 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); | |
2077 | break; | |
2078 | default: | |
2079 | ret = -EIO; | |
2080 | IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); | |
2081 | break; | |
2082 | } | |
2083 | ||
2084 | return ret; | |
2085 | } | |
2086 | ||
8ca151b5 JB |
2087 | int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
2088 | struct ieee80211_vif *vif, | |
2089 | struct ieee80211_sta *sta, | |
2090 | struct ieee80211_key_conf *keyconf, | |
d6ee54a9 | 2091 | u8 key_offset) |
8ca151b5 | 2092 | { |
ba3943b0 | 2093 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 | 2094 | struct iwl_mvm_sta *mvm_sta; |
2f6319d1 | 2095 | u8 sta_id; |
8ca151b5 | 2096 | int ret; |
11828dbc | 2097 | static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; |
8ca151b5 JB |
2098 | |
2099 | lockdep_assert_held(&mvm->mutex); | |
2100 | ||
2101 | /* Get the station id from the mvm local station table */ | |
5f7a1847 JB |
2102 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
2103 | if (!mvm_sta) { | |
2104 | IWL_ERR(mvm, "Failed to find station\n"); | |
8ca151b5 JB |
2105 | return -EINVAL; |
2106 | } | |
5f7a1847 | 2107 | sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
2108 | |
2109 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { | |
2110 | ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); | |
2111 | goto end; | |
2112 | } | |
2113 | ||
2114 | /* | |
2115 | * It is possible that the 'sta' parameter is NULL, and thus | |
2116 | * there is a need to retrieve the sta from the local station table. | |
2117 | */ | |
2118 | if (!sta) { | |
2119 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
2120 | lockdep_is_held(&mvm->mutex)); | |
2121 | if (IS_ERR_OR_NULL(sta)) { | |
2122 | IWL_ERR(mvm, "Invalid station id\n"); | |
2123 | return -EINVAL; | |
2124 | } | |
2125 | } | |
2126 | ||
2f6319d1 | 2127 | if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
8ca151b5 JB |
2128 | return -EINVAL; |
2129 | ||
d6ee54a9 LC |
2130 | /* If the key_offset is not pre-assigned, we need to find a |
2131 | * new offset to use. In normal cases, the offset is not | |
2132 | * pre-assigned, but during HW_RESTART we want to reuse the | |
2133 | * same indices, so we pass them when this function is called. | |
2134 | * | |
2135 | * In D3 entry, we need to hardcoded the indices (because the | |
2136 | * firmware hardcodes the PTK offset to 0). In this case, we | |
2137 | * need to make sure we don't overwrite the hw_key_idx in the | |
2138 | * keyconf structure, because otherwise we cannot configure | |
2139 | * the original ones back when resuming. | |
2140 | */ | |
2141 | if (key_offset == STA_KEY_IDX_INVALID) { | |
2142 | key_offset = iwl_mvm_set_fw_key_idx(mvm); | |
2143 | if (key_offset == STA_KEY_IDX_INVALID) | |
8ca151b5 | 2144 | return -ENOSPC; |
d6ee54a9 | 2145 | keyconf->hw_key_idx = key_offset; |
8ca151b5 JB |
2146 | } |
2147 | ||
d6ee54a9 | 2148 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); |
9c3deeb5 | 2149 | if (ret) |
ba3943b0 | 2150 | goto end; |
ba3943b0 JB |
2151 | |
2152 | /* | |
2153 | * For WEP, the same key is used for multicast and unicast. Upload it | |
2154 | * again, using the same key offset, and now pointing the other one | |
2155 | * to the same key slot (offset). | |
2156 | * If this fails, remove the original as well. | |
2157 | */ | |
2158 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
2159 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { | |
d6ee54a9 LC |
2160 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, |
2161 | key_offset, !mcast); | |
ba3943b0 | 2162 | if (ret) { |
ba3943b0 | 2163 | __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
9c3deeb5 | 2164 | goto end; |
ba3943b0 JB |
2165 | } |
2166 | } | |
8ca151b5 | 2167 | |
9c3deeb5 LC |
2168 | __set_bit(key_offset, mvm->fw_key_table); |
2169 | ||
8ca151b5 JB |
2170 | end: |
2171 | IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
2172 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, | |
11828dbc | 2173 | sta ? sta->addr : zero_addr, ret); |
8ca151b5 JB |
2174 | return ret; |
2175 | } | |
2176 | ||
2177 | int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, | |
2178 | struct ieee80211_vif *vif, | |
2179 | struct ieee80211_sta *sta, | |
2180 | struct ieee80211_key_conf *keyconf) | |
2181 | { | |
ba3943b0 | 2182 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 JB |
2183 | struct iwl_mvm_sta *mvm_sta; |
2184 | u8 sta_id = IWL_MVM_STATION_COUNT; | |
2dc2a15e | 2185 | int ret, i; |
8ca151b5 JB |
2186 | |
2187 | lockdep_assert_held(&mvm->mutex); | |
2188 | ||
5f7a1847 JB |
2189 | /* Get the station from the mvm local station table */ |
2190 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); | |
8ca151b5 JB |
2191 | |
2192 | IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", | |
2193 | keyconf->keyidx, sta_id); | |
2194 | ||
2195 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) | |
2196 | return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); | |
2197 | ||
2f6319d1 | 2198 | if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { |
8ca151b5 JB |
2199 | IWL_ERR(mvm, "offset %d not used in fw key table.\n", |
2200 | keyconf->hw_key_idx); | |
2201 | return -ENOENT; | |
2202 | } | |
2203 | ||
2dc2a15e JB |
2204 | /* track which key was deleted last */ |
2205 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
2206 | if (mvm->fw_key_deleted[i] < U8_MAX) | |
2207 | mvm->fw_key_deleted[i]++; | |
2208 | } | |
2209 | mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; | |
2210 | ||
5f7a1847 | 2211 | if (!mvm_sta) { |
8ca151b5 JB |
2212 | IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); |
2213 | return 0; | |
2214 | } | |
2215 | ||
5f7a1847 JB |
2216 | sta_id = mvm_sta->sta_id; |
2217 | ||
ba3943b0 JB |
2218 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
2219 | if (ret) | |
2220 | return ret; | |
2221 | ||
2222 | /* delete WEP key twice to get rid of (now useless) offset */ | |
2223 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
2224 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) | |
2225 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); | |
2226 | ||
2227 | return ret; | |
8ca151b5 JB |
2228 | } |
2229 | ||
2230 | void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, | |
2231 | struct ieee80211_vif *vif, | |
2232 | struct ieee80211_key_conf *keyconf, | |
2233 | struct ieee80211_sta *sta, u32 iv32, | |
2234 | u16 *phase1key) | |
2235 | { | |
c3eb536a | 2236 | struct iwl_mvm_sta *mvm_sta; |
ba3943b0 | 2237 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 2238 | |
c3eb536a BL |
2239 | rcu_read_lock(); |
2240 | ||
5f7a1847 JB |
2241 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
2242 | if (WARN_ON_ONCE(!mvm_sta)) | |
45854360 | 2243 | goto unlock; |
ba3943b0 | 2244 | iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 2245 | iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); |
45854360 JB |
2246 | |
2247 | unlock: | |
c3eb536a | 2248 | rcu_read_unlock(); |
8ca151b5 JB |
2249 | } |
2250 | ||
9cc40712 JB |
2251 | void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, |
2252 | struct ieee80211_sta *sta) | |
8ca151b5 | 2253 | { |
5b577a90 | 2254 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 2255 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 2256 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 2257 | .sta_id = mvmsta->sta_id, |
5af01772 | 2258 | .station_flags_msk = cpu_to_le32(STA_FLG_PS), |
9cc40712 | 2259 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 JB |
2260 | }; |
2261 | int ret; | |
2262 | ||
854c5705 SS |
2263 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
2264 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
8ca151b5 JB |
2265 | if (ret) |
2266 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
2267 | } | |
2268 | ||
9cc40712 JB |
2269 | void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, |
2270 | struct ieee80211_sta *sta, | |
8ca151b5 | 2271 | enum ieee80211_frame_release_type reason, |
3e56eadf JB |
2272 | u16 cnt, u16 tids, bool more_data, |
2273 | bool agg) | |
8ca151b5 | 2274 | { |
5b577a90 | 2275 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 2276 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 2277 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 2278 | .sta_id = mvmsta->sta_id, |
8ca151b5 JB |
2279 | .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, |
2280 | .sleep_tx_count = cpu_to_le16(cnt), | |
9cc40712 | 2281 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 | 2282 | }; |
3e56eadf JB |
2283 | int tid, ret; |
2284 | unsigned long _tids = tids; | |
2285 | ||
2286 | /* convert TIDs to ACs - we don't support TSPEC so that's OK | |
2287 | * Note that this field is reserved and unused by firmware not | |
2288 | * supporting GO uAPSD, so it's safe to always do this. | |
2289 | */ | |
2290 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) | |
2291 | cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); | |
2292 | ||
2293 | /* If we're releasing frames from aggregation queues then check if the | |
2294 | * all queues combined that we're releasing frames from have | |
2295 | * - more frames than the service period, in which case more_data | |
2296 | * needs to be set | |
2297 | * - fewer than 'cnt' frames, in which case we need to adjust the | |
2298 | * firmware command (but do that unconditionally) | |
2299 | */ | |
2300 | if (agg) { | |
2301 | int remaining = cnt; | |
36be0eb6 | 2302 | int sleep_tx_count; |
3e56eadf JB |
2303 | |
2304 | spin_lock_bh(&mvmsta->lock); | |
2305 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { | |
2306 | struct iwl_mvm_tid_data *tid_data; | |
2307 | u16 n_queued; | |
2308 | ||
2309 | tid_data = &mvmsta->tid_data[tid]; | |
2310 | if (WARN(tid_data->state != IWL_AGG_ON && | |
2311 | tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, | |
2312 | "TID %d state is %d\n", | |
2313 | tid, tid_data->state)) { | |
2314 | spin_unlock_bh(&mvmsta->lock); | |
2315 | ieee80211_sta_eosp(sta); | |
2316 | return; | |
2317 | } | |
2318 | ||
2319 | n_queued = iwl_mvm_tid_queued(tid_data); | |
2320 | if (n_queued > remaining) { | |
2321 | more_data = true; | |
2322 | remaining = 0; | |
2323 | break; | |
2324 | } | |
2325 | remaining -= n_queued; | |
2326 | } | |
36be0eb6 EG |
2327 | sleep_tx_count = cnt - remaining; |
2328 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) | |
2329 | mvmsta->sleep_tx_count = sleep_tx_count; | |
3e56eadf JB |
2330 | spin_unlock_bh(&mvmsta->lock); |
2331 | ||
36be0eb6 | 2332 | cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); |
3e56eadf JB |
2333 | if (WARN_ON(cnt - remaining == 0)) { |
2334 | ieee80211_sta_eosp(sta); | |
2335 | return; | |
2336 | } | |
2337 | } | |
2338 | ||
2339 | /* Note: this is ignored by firmware not supporting GO uAPSD */ | |
2340 | if (more_data) | |
2341 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); | |
2342 | ||
2343 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { | |
2344 | mvmsta->next_status_eosp = true; | |
2345 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); | |
2346 | } else { | |
2347 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); | |
2348 | } | |
8ca151b5 | 2349 | |
156f92f2 EG |
2350 | /* block the Tx queues until the FW updated the sleep Tx count */ |
2351 | iwl_trans_block_txq_ptrs(mvm->trans, true); | |
2352 | ||
2353 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, | |
2354 | CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, | |
854c5705 | 2355 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); |
8ca151b5 JB |
2356 | if (ret) |
2357 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
2358 | } | |
3e56eadf | 2359 | |
0416841d JB |
2360 | void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, |
2361 | struct iwl_rx_cmd_buffer *rxb) | |
3e56eadf JB |
2362 | { |
2363 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
2364 | struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; | |
2365 | struct ieee80211_sta *sta; | |
2366 | u32 sta_id = le32_to_cpu(notif->sta_id); | |
2367 | ||
2368 | if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) | |
0416841d | 2369 | return; |
3e56eadf JB |
2370 | |
2371 | rcu_read_lock(); | |
2372 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
2373 | if (!IS_ERR_OR_NULL(sta)) | |
2374 | ieee80211_sta_eosp(sta); | |
2375 | rcu_read_unlock(); | |
3e56eadf | 2376 | } |
09b0ce1a AO |
2377 | |
2378 | void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, | |
2379 | struct iwl_mvm_sta *mvmsta, bool disable) | |
2380 | { | |
2381 | struct iwl_mvm_add_sta_cmd cmd = { | |
2382 | .add_modify = STA_MODE_MODIFY, | |
2383 | .sta_id = mvmsta->sta_id, | |
2384 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
2385 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
2386 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), | |
2387 | }; | |
2388 | int ret; | |
2389 | ||
854c5705 SS |
2390 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
2391 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
09b0ce1a AO |
2392 | if (ret) |
2393 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
2394 | } | |
003e5236 AO |
2395 | |
2396 | void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, | |
2397 | struct ieee80211_sta *sta, | |
2398 | bool disable) | |
2399 | { | |
2400 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
2401 | ||
2402 | spin_lock_bh(&mvm_sta->lock); | |
2403 | ||
2404 | if (mvm_sta->disable_tx == disable) { | |
2405 | spin_unlock_bh(&mvm_sta->lock); | |
2406 | return; | |
2407 | } | |
2408 | ||
2409 | mvm_sta->disable_tx = disable; | |
2410 | ||
2411 | /* | |
0d365ae5 SS |
2412 | * Tell mac80211 to start/stop queuing tx for this station, |
2413 | * but don't stop queuing if there are still pending frames | |
003e5236 AO |
2414 | * for this station. |
2415 | */ | |
2416 | if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) | |
2417 | ieee80211_sta_block_awake(mvm->hw, sta, disable); | |
2418 | ||
2419 | iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); | |
2420 | ||
2421 | spin_unlock_bh(&mvm_sta->lock); | |
2422 | } | |
2423 | ||
2424 | void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, | |
2425 | struct iwl_mvm_vif *mvmvif, | |
2426 | bool disable) | |
2427 | { | |
2428 | struct ieee80211_sta *sta; | |
2429 | struct iwl_mvm_sta *mvm_sta; | |
2430 | int i; | |
2431 | ||
2432 | lockdep_assert_held(&mvm->mutex); | |
2433 | ||
2434 | /* Block/unblock all the stations of the given mvmvif */ | |
2435 | for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { | |
2436 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], | |
2437 | lockdep_is_held(&mvm->mutex)); | |
2438 | if (IS_ERR_OR_NULL(sta)) | |
2439 | continue; | |
2440 | ||
2441 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
2442 | if (mvm_sta->mac_id_n_color != | |
2443 | FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) | |
2444 | continue; | |
2445 | ||
2446 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); | |
2447 | } | |
2448 | } | |
dc88b4ba LC |
2449 | |
2450 | void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
2451 | { | |
2452 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
2453 | struct iwl_mvm_sta *mvmsta; | |
2454 | ||
2455 | rcu_read_lock(); | |
2456 | ||
2457 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); | |
2458 | ||
2459 | if (!WARN_ON(!mvmsta)) | |
2460 | iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); | |
2461 | ||
2462 | rcu_read_unlock(); | |
2463 | } |