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8ca151b5 JB |
1 | /****************************************************************************** |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
fa7878e7 AO |
8 | * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. |
9 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
854c5705 | 10 | * Copyright(c) 2016 Intel Deutschland GmbH |
8ca151b5 JB |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of version 2 of the GNU General Public License as | |
14 | * published by the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
24 | * USA | |
25 | * | |
26 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 27 | * in the file called COPYING. |
8ca151b5 JB |
28 | * |
29 | * Contact Information: | |
cb2f8277 | 30 | * Intel Linux Wireless <linuxwifi@intel.com> |
8ca151b5 JB |
31 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
32 | * | |
33 | * BSD LICENSE | |
34 | * | |
fa7878e7 AO |
35 | * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. |
36 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
854c5705 | 37 | * Copyright(c) 2016 Intel Deutschland GmbH |
8ca151b5 JB |
38 | * All rights reserved. |
39 | * | |
40 | * Redistribution and use in source and binary forms, with or without | |
41 | * modification, are permitted provided that the following conditions | |
42 | * are met: | |
43 | * | |
44 | * * Redistributions of source code must retain the above copyright | |
45 | * notice, this list of conditions and the following disclaimer. | |
46 | * * Redistributions in binary form must reproduce the above copyright | |
47 | * notice, this list of conditions and the following disclaimer in | |
48 | * the documentation and/or other materials provided with the | |
49 | * distribution. | |
50 | * * Neither the name Intel Corporation nor the names of its | |
51 | * contributors may be used to endorse or promote products derived | |
52 | * from this software without specific prior written permission. | |
53 | * | |
54 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
55 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
56 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
57 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
58 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
59 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
60 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
61 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
62 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
63 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
64 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
65 | * | |
66 | *****************************************************************************/ | |
67 | #include <net/mac80211.h> | |
68 | ||
69 | #include "mvm.h" | |
70 | #include "sta.h" | |
9ee718aa | 71 | #include "rs.h" |
8ca151b5 | 72 | |
854c5705 SS |
73 | /* |
74 | * New version of ADD_STA_sta command added new fields at the end of the | |
75 | * structure, so sending the size of the relevant API's structure is enough to | |
76 | * support both API versions. | |
77 | */ | |
78 | static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) | |
79 | { | |
80 | return iwl_mvm_has_new_rx_api(mvm) ? | |
81 | sizeof(struct iwl_mvm_add_sta_cmd) : | |
82 | sizeof(struct iwl_mvm_add_sta_cmd_v7); | |
83 | } | |
84 | ||
b92e661b EP |
85 | static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, |
86 | enum nl80211_iftype iftype) | |
8ca151b5 JB |
87 | { |
88 | int sta_id; | |
b92e661b | 89 | u32 reserved_ids = 0; |
8ca151b5 | 90 | |
b92e661b | 91 | BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32); |
8ca151b5 JB |
92 | WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); |
93 | ||
94 | lockdep_assert_held(&mvm->mutex); | |
95 | ||
b92e661b EP |
96 | /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ |
97 | if (iftype != NL80211_IFTYPE_STATION) | |
98 | reserved_ids = BIT(0); | |
99 | ||
8ca151b5 | 100 | /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ |
b92e661b EP |
101 | for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++) { |
102 | if (BIT(sta_id) & reserved_ids) | |
103 | continue; | |
104 | ||
8ca151b5 JB |
105 | if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], |
106 | lockdep_is_held(&mvm->mutex))) | |
107 | return sta_id; | |
b92e661b | 108 | } |
8ca151b5 JB |
109 | return IWL_MVM_STATION_COUNT; |
110 | } | |
111 | ||
7a453973 JB |
112 | /* send station add/update command to firmware */ |
113 | int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
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; | |
329 | ||
330 | lockdep_assert_held(&mvm->mutex); | |
331 | ||
d2515a99 | 332 | spin_lock_bh(&mvm->queue_info_lock); |
24afba76 LK |
333 | |
334 | /* | |
335 | * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one | |
336 | * exists | |
337 | */ | |
338 | if (!ieee80211_is_data_qos(hdr->frame_control) || | |
339 | ieee80211_is_qos_nullfunc(hdr->frame_control)) { | |
340 | queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_MGMT_QUEUE, | |
341 | IWL_MVM_DQA_MAX_MGMT_QUEUE); | |
342 | if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) | |
343 | IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", | |
344 | queue); | |
345 | ||
346 | /* If no such queue is found, we'll use a DATA queue instead */ | |
347 | } | |
348 | ||
349 | if (queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { | |
350 | queue = mvmsta->reserved_queue; | |
351 | IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); | |
352 | } | |
353 | ||
354 | if (queue < 0) | |
355 | queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_DATA_QUEUE, | |
356 | IWL_MVM_DQA_MAX_DATA_QUEUE); | |
357 | if (queue >= 0) | |
358 | mvm->queue_info[queue].setup_reserved = false; | |
359 | ||
d2515a99 | 360 | spin_unlock_bh(&mvm->queue_info_lock); |
24afba76 LK |
361 | |
362 | /* TODO: support shared queues for same RA */ | |
363 | if (queue < 0) | |
364 | return -ENOSPC; | |
365 | ||
366 | /* | |
367 | * Actual en/disablement of aggregations is through the ADD_STA HCMD, | |
368 | * but for configuring the SCD to send A-MPDUs we need to mark the queue | |
369 | * as aggregatable. | |
370 | * Mark all DATA queues as allowing to be aggregated at some point | |
371 | */ | |
d5216a28 LK |
372 | cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || |
373 | queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); | |
24afba76 LK |
374 | |
375 | IWL_DEBUG_TX_QUEUES(mvm, "Allocating queue #%d to sta %d on tid %d\n", | |
376 | queue, mvmsta->sta_id, tid); | |
377 | ||
378 | ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); | |
379 | iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg, | |
380 | wdg_timeout); | |
381 | ||
382 | spin_lock_bh(&mvmsta->lock); | |
383 | mvmsta->tid_data[tid].txq_id = queue; | |
384 | mvmsta->tfd_queue_msk |= BIT(queue); | |
385 | ||
386 | if (mvmsta->reserved_queue == queue) | |
387 | mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; | |
388 | spin_unlock_bh(&mvmsta->lock); | |
389 | ||
390 | return iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); | |
391 | } | |
392 | ||
393 | static inline u8 iwl_mvm_tid_to_ac_queue(int tid) | |
394 | { | |
395 | if (tid == IWL_MAX_TID_COUNT) | |
396 | return IEEE80211_AC_VO; /* MGMT */ | |
397 | ||
398 | return tid_to_mac80211_ac[tid]; | |
399 | } | |
400 | ||
401 | static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, | |
402 | struct ieee80211_sta *sta, int tid) | |
403 | { | |
404 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
405 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; | |
406 | struct sk_buff *skb; | |
407 | struct ieee80211_hdr *hdr; | |
408 | struct sk_buff_head deferred_tx; | |
409 | u8 mac_queue; | |
410 | bool no_queue = false; /* Marks if there is a problem with the queue */ | |
411 | u8 ac; | |
412 | ||
413 | lockdep_assert_held(&mvm->mutex); | |
414 | ||
415 | skb = skb_peek(&tid_data->deferred_tx_frames); | |
416 | if (!skb) | |
417 | return; | |
418 | hdr = (void *)skb->data; | |
419 | ||
420 | ac = iwl_mvm_tid_to_ac_queue(tid); | |
421 | mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; | |
422 | ||
423 | if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE && | |
424 | iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { | |
425 | IWL_ERR(mvm, | |
426 | "Can't alloc TXQ for sta %d tid %d - dropping frame\n", | |
427 | mvmsta->sta_id, tid); | |
428 | ||
429 | /* | |
430 | * Mark queue as problematic so later the deferred traffic is | |
431 | * freed, as we can do nothing with it | |
432 | */ | |
433 | no_queue = true; | |
434 | } | |
435 | ||
436 | __skb_queue_head_init(&deferred_tx); | |
437 | ||
d2515a99 LK |
438 | /* Disable bottom-halves when entering TX path */ |
439 | local_bh_disable(); | |
24afba76 LK |
440 | spin_lock(&mvmsta->lock); |
441 | skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); | |
442 | spin_unlock(&mvmsta->lock); | |
443 | ||
24afba76 LK |
444 | while ((skb = __skb_dequeue(&deferred_tx))) |
445 | if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) | |
446 | ieee80211_free_txskb(mvm->hw, skb); | |
447 | local_bh_enable(); | |
448 | ||
449 | /* Wake queue */ | |
450 | iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); | |
451 | } | |
452 | ||
453 | void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) | |
454 | { | |
455 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, | |
456 | add_stream_wk); | |
457 | struct ieee80211_sta *sta; | |
458 | struct iwl_mvm_sta *mvmsta; | |
459 | unsigned long deferred_tid_traffic; | |
460 | int sta_id, tid; | |
461 | ||
462 | mutex_lock(&mvm->mutex); | |
463 | ||
464 | /* Go over all stations with deferred traffic */ | |
465 | for_each_set_bit(sta_id, mvm->sta_deferred_frames, | |
466 | IWL_MVM_STATION_COUNT) { | |
467 | clear_bit(sta_id, mvm->sta_deferred_frames); | |
468 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
469 | lockdep_is_held(&mvm->mutex)); | |
470 | if (IS_ERR_OR_NULL(sta)) | |
471 | continue; | |
472 | ||
473 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
474 | deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; | |
475 | ||
476 | for_each_set_bit(tid, &deferred_tid_traffic, | |
477 | IWL_MAX_TID_COUNT + 1) | |
478 | iwl_mvm_tx_deferred_stream(mvm, sta, tid); | |
479 | } | |
480 | ||
481 | mutex_unlock(&mvm->mutex); | |
482 | } | |
483 | ||
484 | static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, | |
d5216a28 LK |
485 | struct ieee80211_sta *sta, |
486 | enum nl80211_iftype vif_type) | |
24afba76 LK |
487 | { |
488 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
489 | int queue; | |
490 | ||
491 | spin_lock_bh(&mvm->queue_info_lock); | |
492 | ||
493 | /* Make sure we have free resources for this STA */ | |
d5216a28 LK |
494 | if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && |
495 | !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].hw_queue_refcount && | |
496 | !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].setup_reserved) | |
497 | queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; | |
498 | else | |
499 | queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_DATA_QUEUE, | |
500 | IWL_MVM_DQA_MAX_DATA_QUEUE); | |
24afba76 LK |
501 | if (queue < 0) { |
502 | spin_unlock_bh(&mvm->queue_info_lock); | |
503 | IWL_ERR(mvm, "No available queues for new station\n"); | |
504 | return -ENOSPC; | |
505 | } | |
506 | mvm->queue_info[queue].setup_reserved = true; | |
507 | ||
508 | spin_unlock_bh(&mvm->queue_info_lock); | |
509 | ||
510 | mvmsta->reserved_queue = queue; | |
511 | ||
512 | IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", | |
513 | queue, mvmsta->sta_id); | |
514 | ||
515 | return 0; | |
516 | } | |
517 | ||
8ca151b5 JB |
518 | int iwl_mvm_add_sta(struct iwl_mvm *mvm, |
519 | struct ieee80211_vif *vif, | |
520 | struct ieee80211_sta *sta) | |
521 | { | |
522 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 523 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
a571f5f6 | 524 | struct iwl_mvm_rxq_dup_data *dup_data; |
8ca151b5 JB |
525 | int i, ret, sta_id; |
526 | ||
527 | lockdep_assert_held(&mvm->mutex); | |
528 | ||
529 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) | |
b92e661b EP |
530 | sta_id = iwl_mvm_find_free_sta_id(mvm, |
531 | ieee80211_vif_type_p2p(vif)); | |
8ca151b5 JB |
532 | else |
533 | sta_id = mvm_sta->sta_id; | |
534 | ||
36f4631c | 535 | if (sta_id == IWL_MVM_STATION_COUNT) |
8ca151b5 JB |
536 | return -ENOSPC; |
537 | ||
538 | spin_lock_init(&mvm_sta->lock); | |
539 | ||
540 | mvm_sta->sta_id = sta_id; | |
541 | mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, | |
542 | mvmvif->color); | |
543 | mvm_sta->vif = vif; | |
544 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
9ee718aa EL |
545 | mvm_sta->tx_protection = 0; |
546 | mvm_sta->tt_tx_protection = false; | |
8ca151b5 JB |
547 | |
548 | /* HW restart, don't assume the memory has been zeroed */ | |
e3d4bc8c | 549 | atomic_set(&mvm->pending_frames[sta_id], 0); |
69191afe | 550 | mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ |
8ca151b5 | 551 | mvm_sta->tfd_queue_msk = 0; |
a0f6bf2a AN |
552 | |
553 | /* allocate new queues for a TDLS station */ | |
554 | if (sta->tdls) { | |
555 | ret = iwl_mvm_tdls_sta_init(mvm, sta); | |
556 | if (ret) | |
557 | return ret; | |
24afba76 | 558 | } else if (!iwl_mvm_is_dqa_supported(mvm)) { |
a0f6bf2a AN |
559 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
560 | if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) | |
561 | mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); | |
562 | } | |
8ca151b5 | 563 | |
6d9d32b8 | 564 | /* for HW restart - reset everything but the sequence number */ |
24afba76 | 565 | for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { |
6d9d32b8 JB |
566 | u16 seq = mvm_sta->tid_data[i].seq_number; |
567 | memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); | |
568 | mvm_sta->tid_data[i].seq_number = seq; | |
24afba76 LK |
569 | |
570 | if (!iwl_mvm_is_dqa_supported(mvm)) | |
571 | continue; | |
572 | ||
573 | /* | |
574 | * Mark all queues for this STA as unallocated and defer TX | |
575 | * frames until the queue is allocated | |
576 | */ | |
577 | mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; | |
578 | skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); | |
6d9d32b8 | 579 | } |
24afba76 | 580 | mvm_sta->deferred_traffic_tid_map = 0; |
efed6640 | 581 | mvm_sta->agg_tids = 0; |
8ca151b5 | 582 | |
a571f5f6 SS |
583 | if (iwl_mvm_has_new_rx_api(mvm) && |
584 | !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
585 | dup_data = kcalloc(mvm->trans->num_rx_queues, | |
586 | sizeof(*dup_data), | |
587 | GFP_KERNEL); | |
588 | if (!dup_data) | |
589 | return -ENOMEM; | |
590 | mvm_sta->dup_data = dup_data; | |
591 | } | |
592 | ||
24afba76 | 593 | if (iwl_mvm_is_dqa_supported(mvm)) { |
d5216a28 LK |
594 | ret = iwl_mvm_reserve_sta_stream(mvm, sta, |
595 | ieee80211_vif_type_p2p(vif)); | |
24afba76 LK |
596 | if (ret) |
597 | goto err; | |
598 | } | |
599 | ||
600 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0); | |
8ca151b5 | 601 | if (ret) |
a0f6bf2a | 602 | goto err; |
8ca151b5 | 603 | |
9e848010 JB |
604 | if (vif->type == NL80211_IFTYPE_STATION) { |
605 | if (!sta->tdls) { | |
606 | WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); | |
607 | mvmvif->ap_sta_id = sta_id; | |
608 | } else { | |
609 | WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); | |
610 | } | |
611 | } | |
8ca151b5 JB |
612 | |
613 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); | |
614 | ||
615 | return 0; | |
a0f6bf2a AN |
616 | |
617 | err: | |
618 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
619 | return ret; | |
8ca151b5 JB |
620 | } |
621 | ||
7a453973 JB |
622 | int iwl_mvm_update_sta(struct iwl_mvm *mvm, |
623 | struct ieee80211_vif *vif, | |
624 | struct ieee80211_sta *sta) | |
625 | { | |
24afba76 | 626 | return iwl_mvm_sta_send_to_fw(mvm, sta, true, 0); |
7a453973 JB |
627 | } |
628 | ||
8ca151b5 JB |
629 | int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, |
630 | bool drain) | |
631 | { | |
f9dc0004 | 632 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
633 | int ret; |
634 | u32 status; | |
635 | ||
636 | lockdep_assert_held(&mvm->mutex); | |
637 | ||
638 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
639 | cmd.sta_id = mvmsta->sta_id; | |
640 | cmd.add_modify = STA_MODE_MODIFY; | |
641 | cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; | |
642 | cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); | |
643 | ||
644 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
645 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
646 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 647 | &cmd, &status); |
8ca151b5 JB |
648 | if (ret) |
649 | return ret; | |
650 | ||
837c4da9 | 651 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
652 | case ADD_STA_SUCCESS: |
653 | IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", | |
654 | mvmsta->sta_id); | |
655 | break; | |
656 | default: | |
657 | ret = -EIO; | |
658 | IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", | |
659 | mvmsta->sta_id); | |
660 | break; | |
661 | } | |
662 | ||
663 | return ret; | |
664 | } | |
665 | ||
666 | /* | |
667 | * Remove a station from the FW table. Before sending the command to remove | |
668 | * the station validate that the station is indeed known to the driver (sanity | |
669 | * only). | |
670 | */ | |
671 | static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) | |
672 | { | |
673 | struct ieee80211_sta *sta; | |
674 | struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { | |
675 | .sta_id = sta_id, | |
676 | }; | |
677 | int ret; | |
678 | ||
679 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
680 | lockdep_is_held(&mvm->mutex)); | |
681 | ||
682 | /* Note: internal stations are marked as error values */ | |
683 | if (!sta) { | |
684 | IWL_ERR(mvm, "Invalid station id\n"); | |
685 | return -EINVAL; | |
686 | } | |
687 | ||
a1022927 | 688 | ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, |
8ca151b5 JB |
689 | sizeof(rm_sta_cmd), &rm_sta_cmd); |
690 | if (ret) { | |
691 | IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); | |
692 | return ret; | |
693 | } | |
694 | ||
695 | return 0; | |
696 | } | |
697 | ||
698 | void iwl_mvm_sta_drained_wk(struct work_struct *wk) | |
699 | { | |
700 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); | |
701 | u8 sta_id; | |
702 | ||
703 | /* | |
704 | * The mutex is needed because of the SYNC cmd, but not only: if the | |
705 | * work would run concurrently with iwl_mvm_rm_sta, it would run before | |
706 | * iwl_mvm_rm_sta sets the station as busy, and exit. Then | |
707 | * iwl_mvm_rm_sta would set the station as busy, and nobody will clean | |
708 | * that later. | |
709 | */ | |
710 | mutex_lock(&mvm->mutex); | |
711 | ||
712 | for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { | |
713 | int ret; | |
714 | struct ieee80211_sta *sta = | |
715 | rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
716 | lockdep_is_held(&mvm->mutex)); | |
717 | ||
1ddbbb0c JB |
718 | /* |
719 | * This station is in use or RCU-removed; the latter happens in | |
720 | * managed mode, where mac80211 removes the station before we | |
721 | * can remove it from firmware (we can only do that after the | |
722 | * MAC is marked unassociated), and possibly while the deauth | |
723 | * frame to disconnect from the AP is still queued. Then, the | |
724 | * station pointer is -ENOENT when the last skb is reclaimed. | |
725 | */ | |
726 | if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) | |
8ca151b5 JB |
727 | continue; |
728 | ||
729 | if (PTR_ERR(sta) == -EINVAL) { | |
730 | IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", | |
731 | sta_id); | |
732 | continue; | |
733 | } | |
734 | ||
735 | if (!sta) { | |
736 | IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", | |
737 | sta_id); | |
738 | continue; | |
739 | } | |
740 | ||
741 | WARN_ON(PTR_ERR(sta) != -EBUSY); | |
742 | /* This station was removed and we waited until it got drained, | |
743 | * we can now proceed and remove it. | |
744 | */ | |
745 | ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
746 | if (ret) { | |
747 | IWL_ERR(mvm, | |
748 | "Couldn't remove sta %d after it was drained\n", | |
749 | sta_id); | |
750 | continue; | |
751 | } | |
c531c771 | 752 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 | 753 | clear_bit(sta_id, mvm->sta_drained); |
a0f6bf2a AN |
754 | |
755 | if (mvm->tfd_drained[sta_id]) { | |
756 | unsigned long i, msk = mvm->tfd_drained[sta_id]; | |
757 | ||
a4ca3ed4 | 758 | for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) |
06ecdba3 AN |
759 | iwl_mvm_disable_txq(mvm, i, i, |
760 | IWL_MAX_TID_COUNT, 0); | |
a0f6bf2a AN |
761 | |
762 | mvm->tfd_drained[sta_id] = 0; | |
763 | IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", | |
764 | sta_id, msk); | |
765 | } | |
8ca151b5 JB |
766 | } |
767 | ||
768 | mutex_unlock(&mvm->mutex); | |
769 | } | |
770 | ||
24afba76 LK |
771 | static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, |
772 | struct ieee80211_vif *vif, | |
773 | struct iwl_mvm_sta *mvm_sta) | |
774 | { | |
775 | int ac; | |
776 | int i; | |
777 | ||
778 | lockdep_assert_held(&mvm->mutex); | |
779 | ||
780 | for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { | |
781 | if (mvm_sta->tid_data[i].txq_id == IEEE80211_INVAL_HW_QUEUE) | |
782 | continue; | |
783 | ||
784 | ac = iwl_mvm_tid_to_ac_queue(i); | |
785 | iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, | |
786 | vif->hw_queue[ac], i, 0); | |
787 | mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; | |
788 | } | |
789 | } | |
790 | ||
8ca151b5 JB |
791 | int iwl_mvm_rm_sta(struct iwl_mvm *mvm, |
792 | struct ieee80211_vif *vif, | |
793 | struct ieee80211_sta *sta) | |
794 | { | |
795 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 796 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
797 | int ret; |
798 | ||
799 | lockdep_assert_held(&mvm->mutex); | |
800 | ||
a571f5f6 SS |
801 | if (iwl_mvm_has_new_rx_api(mvm)) |
802 | kfree(mvm_sta->dup_data); | |
803 | ||
8ca151b5 JB |
804 | if (vif->type == NL80211_IFTYPE_STATION && |
805 | mvmvif->ap_sta_id == mvm_sta->sta_id) { | |
fe92e32a EG |
806 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
807 | if (ret) | |
808 | return ret; | |
80d85655 | 809 | /* flush its queues here since we are freeing mvm_sta */ |
5888a40c | 810 | ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); |
fe92e32a EG |
811 | if (ret) |
812 | return ret; | |
813 | ret = iwl_trans_wait_tx_queue_empty(mvm->trans, | |
814 | mvm_sta->tfd_queue_msk); | |
815 | if (ret) | |
816 | return ret; | |
817 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); | |
80d85655 | 818 | |
24afba76 LK |
819 | /* If DQA is supported - the queues can be disabled now */ |
820 | if (iwl_mvm_is_dqa_supported(mvm)) | |
821 | iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); | |
822 | ||
8ca151b5 JB |
823 | /* if we are associated - we can't remove the AP STA now */ |
824 | if (vif->bss_conf.assoc) | |
825 | return ret; | |
826 | ||
827 | /* unassoc - go ahead - remove the AP STA now */ | |
828 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
37577fe2 EP |
829 | |
830 | /* clear d0i3_ap_sta_id if no longer relevant */ | |
831 | if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) | |
832 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
8ca151b5 JB |
833 | } |
834 | ||
1d3c3f63 AN |
835 | /* |
836 | * This shouldn't happen - the TDLS channel switch should be canceled | |
837 | * before the STA is removed. | |
838 | */ | |
839 | if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { | |
840 | mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; | |
841 | cancel_delayed_work(&mvm->tdls_cs.dwork); | |
842 | } | |
843 | ||
e3d4bc8c EG |
844 | /* |
845 | * Make sure that the tx response code sees the station as -EBUSY and | |
846 | * calls the drain worker. | |
847 | */ | |
848 | spin_lock_bh(&mvm_sta->lock); | |
8ca151b5 JB |
849 | /* |
850 | * There are frames pending on the AC queues for this station. | |
851 | * We need to wait until all the frames are drained... | |
852 | */ | |
e3d4bc8c | 853 | if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { |
8ca151b5 JB |
854 | rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], |
855 | ERR_PTR(-EBUSY)); | |
e3d4bc8c | 856 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
857 | |
858 | /* disable TDLS sta queues on drain complete */ | |
859 | if (sta->tdls) { | |
860 | mvm->tfd_drained[mvm_sta->sta_id] = | |
861 | mvm_sta->tfd_queue_msk; | |
862 | IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", | |
863 | mvm_sta->sta_id); | |
864 | } | |
865 | ||
e3d4bc8c | 866 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
8ca151b5 | 867 | } else { |
e3d4bc8c | 868 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
869 | |
870 | if (sta->tdls) | |
871 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
872 | ||
8ca151b5 | 873 | ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); |
c531c771 | 874 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); |
8ca151b5 JB |
875 | } |
876 | ||
877 | return ret; | |
878 | } | |
879 | ||
880 | int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, | |
881 | struct ieee80211_vif *vif, | |
882 | u8 sta_id) | |
883 | { | |
884 | int ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
885 | ||
886 | lockdep_assert_held(&mvm->mutex); | |
887 | ||
c531c771 | 888 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 JB |
889 | return ret; |
890 | } | |
891 | ||
0e39eb03 CRI |
892 | int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, |
893 | struct iwl_mvm_int_sta *sta, | |
894 | u32 qmask, enum nl80211_iftype iftype) | |
8ca151b5 JB |
895 | { |
896 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
b92e661b | 897 | sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); |
8ca151b5 JB |
898 | if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) |
899 | return -ENOSPC; | |
900 | } | |
901 | ||
902 | sta->tfd_queue_msk = qmask; | |
903 | ||
904 | /* put a non-NULL value so iterating over the stations won't stop */ | |
905 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); | |
906 | return 0; | |
907 | } | |
908 | ||
712b24ad JB |
909 | static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, |
910 | struct iwl_mvm_int_sta *sta) | |
8ca151b5 | 911 | { |
c531c771 | 912 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); |
8ca151b5 JB |
913 | memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); |
914 | sta->sta_id = IWL_MVM_STATION_COUNT; | |
915 | } | |
916 | ||
917 | static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, | |
918 | struct iwl_mvm_int_sta *sta, | |
919 | const u8 *addr, | |
920 | u16 mac_id, u16 color) | |
921 | { | |
f9dc0004 | 922 | struct iwl_mvm_add_sta_cmd cmd; |
8ca151b5 JB |
923 | int ret; |
924 | u32 status; | |
925 | ||
926 | lockdep_assert_held(&mvm->mutex); | |
927 | ||
f9dc0004 | 928 | memset(&cmd, 0, sizeof(cmd)); |
8ca151b5 JB |
929 | cmd.sta_id = sta->sta_id; |
930 | cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, | |
931 | color)); | |
932 | ||
933 | cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); | |
cf0cda19 | 934 | cmd.tid_disable_tx = cpu_to_le16(0xffff); |
8ca151b5 JB |
935 | |
936 | if (addr) | |
937 | memcpy(cmd.addr, addr, ETH_ALEN); | |
938 | ||
854c5705 SS |
939 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
940 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 941 | &cmd, &status); |
8ca151b5 JB |
942 | if (ret) |
943 | return ret; | |
944 | ||
837c4da9 | 945 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
946 | case ADD_STA_SUCCESS: |
947 | IWL_DEBUG_INFO(mvm, "Internal station added.\n"); | |
948 | return 0; | |
949 | default: | |
950 | ret = -EIO; | |
951 | IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", | |
952 | status); | |
953 | break; | |
954 | } | |
955 | return ret; | |
956 | } | |
957 | ||
958 | int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) | |
959 | { | |
4cf677fd EG |
960 | unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? |
961 | mvm->cfg->base_params->wd_timeout : | |
962 | IWL_WATCHDOG_DISABLED; | |
8ca151b5 JB |
963 | int ret; |
964 | ||
965 | lockdep_assert_held(&mvm->mutex); | |
966 | ||
7da91b0e | 967 | /* Map Aux queue to fifo - needs to happen before adding Aux station */ |
4ecafae9 | 968 | iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, |
5c1156ef | 969 | IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); |
7da91b0e AM |
970 | |
971 | /* Allocate aux station and assign to it the aux queue */ | |
972 | ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), | |
b92e661b | 973 | NL80211_IFTYPE_UNSPECIFIED); |
8ca151b5 JB |
974 | if (ret) |
975 | return ret; | |
976 | ||
977 | ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, | |
978 | MAC_INDEX_AUX, 0); | |
979 | ||
980 | if (ret) | |
981 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
982 | return ret; | |
983 | } | |
984 | ||
0e39eb03 CRI |
985 | int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
986 | { | |
987 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
988 | ||
989 | lockdep_assert_held(&mvm->mutex); | |
990 | return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, | |
991 | mvmvif->id, 0); | |
992 | } | |
993 | ||
994 | int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
995 | { | |
996 | int ret; | |
997 | ||
998 | lockdep_assert_held(&mvm->mutex); | |
999 | ||
1000 | ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); | |
1001 | if (ret) | |
1002 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
1003 | ||
1004 | return ret; | |
1005 | } | |
1006 | ||
1007 | void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) | |
1008 | { | |
1009 | iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); | |
1010 | } | |
1011 | ||
712b24ad JB |
1012 | void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) |
1013 | { | |
1014 | lockdep_assert_held(&mvm->mutex); | |
1015 | ||
1016 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
1017 | } | |
1018 | ||
8ca151b5 JB |
1019 | /* |
1020 | * Send the add station command for the vif's broadcast station. | |
1021 | * Assumes that the station was already allocated. | |
1022 | * | |
1023 | * @mvm: the mvm component | |
1024 | * @vif: the interface to which the broadcast station is added | |
1025 | * @bsta: the broadcast station to add. | |
1026 | */ | |
013290aa | 1027 | int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
1028 | { |
1029 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 1030 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
5023d966 | 1031 | static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
a4243402 | 1032 | const u8 *baddr = _baddr; |
8ca151b5 JB |
1033 | |
1034 | lockdep_assert_held(&mvm->mutex); | |
1035 | ||
de24f638 LK |
1036 | if (iwl_mvm_is_dqa_supported(mvm)) { |
1037 | struct iwl_trans_txq_scd_cfg cfg = { | |
1038 | .fifo = IWL_MVM_TX_FIFO_VO, | |
1039 | .sta_id = mvmvif->bcast_sta.sta_id, | |
1040 | .tid = IWL_MAX_TID_COUNT, | |
1041 | .aggregate = false, | |
1042 | .frame_limit = IWL_FRAME_LIMIT, | |
1043 | }; | |
1044 | unsigned int wdg_timeout = | |
1045 | iwl_mvm_get_wd_timeout(mvm, vif, false, false); | |
1046 | int queue; | |
1047 | ||
1048 | if ((vif->type == NL80211_IFTYPE_AP) && | |
1049 | (mvmvif->bcast_sta.tfd_queue_msk & | |
1050 | BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE))) | |
1051 | queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; | |
4c965139 LK |
1052 | else if ((vif->type == NL80211_IFTYPE_P2P_DEVICE) && |
1053 | (mvmvif->bcast_sta.tfd_queue_msk & | |
1054 | BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE))) | |
1055 | queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE; | |
de24f638 LK |
1056 | else if (WARN(1, "Missed required TXQ for adding bcast STA\n")) |
1057 | return -EINVAL; | |
1058 | ||
1059 | iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, &cfg, | |
1060 | wdg_timeout); | |
1061 | } | |
1062 | ||
5023d966 JB |
1063 | if (vif->type == NL80211_IFTYPE_ADHOC) |
1064 | baddr = vif->bss_conf.bssid; | |
1065 | ||
8ca151b5 JB |
1066 | if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) |
1067 | return -ENOSPC; | |
1068 | ||
1069 | return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, | |
1070 | mvmvif->id, mvmvif->color); | |
1071 | } | |
1072 | ||
1073 | /* Send the FW a request to remove the station from it's internal data | |
1074 | * structures, but DO NOT remove the entry from the local data structures. */ | |
013290aa | 1075 | int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 | 1076 | { |
013290aa | 1077 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1078 | int ret; |
1079 | ||
1080 | lockdep_assert_held(&mvm->mutex); | |
1081 | ||
013290aa | 1082 | ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); |
8ca151b5 JB |
1083 | if (ret) |
1084 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
1085 | return ret; | |
1086 | } | |
1087 | ||
013290aa JB |
1088 | int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
1089 | { | |
1090 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
de24f638 | 1091 | u32 qmask = 0; |
013290aa JB |
1092 | |
1093 | lockdep_assert_held(&mvm->mutex); | |
1094 | ||
de24f638 LK |
1095 | if (!iwl_mvm_is_dqa_supported(mvm)) |
1096 | qmask = iwl_mvm_mac_get_queues_mask(vif); | |
013290aa | 1097 | |
de24f638 LK |
1098 | if (vif->type == NL80211_IFTYPE_AP) { |
1099 | /* | |
1100 | * The firmware defines the TFD queue mask to only be relevant | |
1101 | * for *unicast* queues, so the multicast (CAB) queue shouldn't | |
1102 | * be included. | |
1103 | */ | |
013290aa JB |
1104 | qmask &= ~BIT(vif->cab_queue); |
1105 | ||
de24f638 LK |
1106 | if (iwl_mvm_is_dqa_supported(mvm)) |
1107 | qmask |= BIT(IWL_MVM_DQA_AP_PROBE_RESP_QUEUE); | |
4c965139 LK |
1108 | } else if (iwl_mvm_is_dqa_supported(mvm) && |
1109 | vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
1110 | qmask |= BIT(IWL_MVM_DQA_P2P_DEVICE_QUEUE); | |
de24f638 LK |
1111 | } |
1112 | ||
013290aa JB |
1113 | return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, |
1114 | ieee80211_vif_type_p2p(vif)); | |
1115 | } | |
1116 | ||
8ca151b5 JB |
1117 | /* Allocate a new station entry for the broadcast station to the given vif, |
1118 | * and send it to the FW. | |
1119 | * Note that each P2P mac should have its own broadcast station. | |
1120 | * | |
1121 | * @mvm: the mvm component | |
1122 | * @vif: the interface to which the broadcast station is added | |
1123 | * @bsta: the broadcast station to add. */ | |
013290aa | 1124 | int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
1125 | { |
1126 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 1127 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
8ca151b5 JB |
1128 | int ret; |
1129 | ||
1130 | lockdep_assert_held(&mvm->mutex); | |
1131 | ||
013290aa | 1132 | ret = iwl_mvm_alloc_bcast_sta(mvm, vif); |
8ca151b5 JB |
1133 | if (ret) |
1134 | return ret; | |
1135 | ||
013290aa | 1136 | ret = iwl_mvm_send_add_bcast_sta(mvm, vif); |
8ca151b5 JB |
1137 | |
1138 | if (ret) | |
1139 | iwl_mvm_dealloc_int_sta(mvm, bsta); | |
013290aa | 1140 | |
8ca151b5 JB |
1141 | return ret; |
1142 | } | |
1143 | ||
013290aa JB |
1144 | void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
1145 | { | |
1146 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1147 | ||
1148 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
1149 | } | |
1150 | ||
8ca151b5 JB |
1151 | /* |
1152 | * Send the FW a request to remove the station from it's internal data | |
1153 | * structures, and in addition remove it from the local data structure. | |
1154 | */ | |
013290aa | 1155 | int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
1156 | { |
1157 | int ret; | |
1158 | ||
1159 | lockdep_assert_held(&mvm->mutex); | |
1160 | ||
013290aa JB |
1161 | ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); |
1162 | ||
1163 | iwl_mvm_dealloc_bcast_sta(mvm, vif); | |
8ca151b5 | 1164 | |
8ca151b5 JB |
1165 | return ret; |
1166 | } | |
1167 | ||
113a0447 EG |
1168 | #define IWL_MAX_RX_BA_SESSIONS 16 |
1169 | ||
b915c101 | 1170 | static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) |
10b2b201 | 1171 | { |
b915c101 SS |
1172 | struct iwl_mvm_delba_notif notif = { |
1173 | .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA, | |
1174 | .metadata.sync = 1, | |
1175 | .delba.baid = baid, | |
10b2b201 | 1176 | }; |
b915c101 SS |
1177 | iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); |
1178 | }; | |
10b2b201 | 1179 | |
b915c101 SS |
1180 | static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, |
1181 | struct iwl_mvm_baid_data *data) | |
1182 | { | |
1183 | int i; | |
1184 | ||
1185 | iwl_mvm_sync_rxq_del_ba(mvm, data->baid); | |
1186 | ||
1187 | for (i = 0; i < mvm->trans->num_rx_queues; i++) { | |
1188 | int j; | |
1189 | struct iwl_mvm_reorder_buffer *reorder_buf = | |
1190 | &data->reorder_buf[i]; | |
1191 | ||
0690405f SS |
1192 | spin_lock_bh(&reorder_buf->lock); |
1193 | if (likely(!reorder_buf->num_stored)) { | |
1194 | spin_unlock_bh(&reorder_buf->lock); | |
b915c101 | 1195 | continue; |
0690405f | 1196 | } |
b915c101 SS |
1197 | |
1198 | /* | |
1199 | * This shouldn't happen in regular DELBA since the internal | |
1200 | * delBA notification should trigger a release of all frames in | |
1201 | * the reorder buffer. | |
1202 | */ | |
1203 | WARN_ON(1); | |
1204 | ||
1205 | for (j = 0; j < reorder_buf->buf_size; j++) | |
1206 | __skb_queue_purge(&reorder_buf->entries[j]); | |
0690405f SS |
1207 | /* |
1208 | * Prevent timer re-arm. This prevents a very far fetched case | |
1209 | * where we timed out on the notification. There may be prior | |
1210 | * RX frames pending in the RX queue before the notification | |
1211 | * that might get processed between now and the actual deletion | |
1212 | * and we would re-arm the timer although we are deleting the | |
1213 | * reorder buffer. | |
1214 | */ | |
1215 | reorder_buf->removed = true; | |
1216 | spin_unlock_bh(&reorder_buf->lock); | |
1217 | del_timer_sync(&reorder_buf->reorder_timer); | |
b915c101 SS |
1218 | } |
1219 | } | |
1220 | ||
1221 | static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, | |
1222 | u32 sta_id, | |
1223 | struct iwl_mvm_baid_data *data, | |
1224 | u16 ssn, u8 buf_size) | |
1225 | { | |
1226 | int i; | |
1227 | ||
1228 | for (i = 0; i < mvm->trans->num_rx_queues; i++) { | |
1229 | struct iwl_mvm_reorder_buffer *reorder_buf = | |
1230 | &data->reorder_buf[i]; | |
1231 | int j; | |
1232 | ||
1233 | reorder_buf->num_stored = 0; | |
1234 | reorder_buf->head_sn = ssn; | |
1235 | reorder_buf->buf_size = buf_size; | |
0690405f SS |
1236 | /* rx reorder timer */ |
1237 | reorder_buf->reorder_timer.function = | |
1238 | iwl_mvm_reorder_timer_expired; | |
1239 | reorder_buf->reorder_timer.data = (unsigned long)reorder_buf; | |
1240 | init_timer(&reorder_buf->reorder_timer); | |
1241 | spin_lock_init(&reorder_buf->lock); | |
1242 | reorder_buf->mvm = mvm; | |
b915c101 SS |
1243 | reorder_buf->queue = i; |
1244 | reorder_buf->sta_id = sta_id; | |
1245 | for (j = 0; j < reorder_buf->buf_size; j++) | |
1246 | __skb_queue_head_init(&reorder_buf->entries[j]); | |
1247 | } | |
10b2b201 SS |
1248 | } |
1249 | ||
8ca151b5 | 1250 | int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
10b2b201 | 1251 | int tid, u16 ssn, bool start, u8 buf_size, u16 timeout) |
8ca151b5 | 1252 | { |
9d8ce6af | 1253 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1254 | struct iwl_mvm_add_sta_cmd cmd = {}; |
10b2b201 | 1255 | struct iwl_mvm_baid_data *baid_data = NULL; |
8ca151b5 JB |
1256 | int ret; |
1257 | u32 status; | |
1258 | ||
1259 | lockdep_assert_held(&mvm->mutex); | |
1260 | ||
113a0447 EG |
1261 | if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { |
1262 | IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); | |
1263 | return -ENOSPC; | |
1264 | } | |
1265 | ||
10b2b201 SS |
1266 | if (iwl_mvm_has_new_rx_api(mvm) && start) { |
1267 | /* | |
1268 | * Allocate here so if allocation fails we can bail out early | |
1269 | * before starting the BA session in the firmware | |
1270 | */ | |
b915c101 SS |
1271 | baid_data = kzalloc(sizeof(*baid_data) + |
1272 | mvm->trans->num_rx_queues * | |
1273 | sizeof(baid_data->reorder_buf[0]), | |
1274 | GFP_KERNEL); | |
10b2b201 SS |
1275 | if (!baid_data) |
1276 | return -ENOMEM; | |
1277 | } | |
1278 | ||
8ca151b5 JB |
1279 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
1280 | cmd.sta_id = mvm_sta->sta_id; | |
1281 | cmd.add_modify = STA_MODE_MODIFY; | |
93a42667 EG |
1282 | if (start) { |
1283 | cmd.add_immediate_ba_tid = (u8) tid; | |
1284 | cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
854c5705 | 1285 | cmd.rx_ba_window = cpu_to_le16((u16)buf_size); |
93a42667 EG |
1286 | } else { |
1287 | cmd.remove_immediate_ba_tid = (u8) tid; | |
1288 | } | |
8ca151b5 JB |
1289 | cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : |
1290 | STA_MODIFY_REMOVE_BA_TID; | |
1291 | ||
1292 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
1293 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
1294 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 1295 | &cmd, &status); |
8ca151b5 | 1296 | if (ret) |
10b2b201 | 1297 | goto out_free; |
8ca151b5 | 1298 | |
837c4da9 | 1299 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
1300 | case ADD_STA_SUCCESS: |
1301 | IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", | |
1302 | start ? "start" : "stopp"); | |
1303 | break; | |
1304 | case ADD_STA_IMMEDIATE_BA_FAILURE: | |
1305 | IWL_WARN(mvm, "RX BA Session refused by fw\n"); | |
1306 | ret = -ENOSPC; | |
1307 | break; | |
1308 | default: | |
1309 | ret = -EIO; | |
1310 | IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", | |
1311 | start ? "start" : "stopp", status); | |
1312 | break; | |
1313 | } | |
1314 | ||
10b2b201 SS |
1315 | if (ret) |
1316 | goto out_free; | |
1317 | ||
1318 | if (start) { | |
1319 | u8 baid; | |
1320 | ||
1321 | mvm->rx_ba_sessions++; | |
1322 | ||
1323 | if (!iwl_mvm_has_new_rx_api(mvm)) | |
1324 | return 0; | |
1325 | ||
1326 | if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { | |
1327 | ret = -EINVAL; | |
1328 | goto out_free; | |
1329 | } | |
1330 | baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> | |
1331 | IWL_ADD_STA_BAID_SHIFT); | |
1332 | baid_data->baid = baid; | |
1333 | baid_data->timeout = timeout; | |
1334 | baid_data->last_rx = jiffies; | |
1335 | init_timer(&baid_data->session_timer); | |
1336 | baid_data->session_timer.function = | |
1337 | iwl_mvm_rx_agg_session_expired; | |
1338 | baid_data->session_timer.data = | |
1339 | (unsigned long)&mvm->baid_map[baid]; | |
1340 | baid_data->mvm = mvm; | |
1341 | baid_data->tid = tid; | |
1342 | baid_data->sta_id = mvm_sta->sta_id; | |
1343 | ||
1344 | mvm_sta->tid_to_baid[tid] = baid; | |
1345 | if (timeout) | |
1346 | mod_timer(&baid_data->session_timer, | |
1347 | TU_TO_EXP_TIME(timeout * 2)); | |
1348 | ||
b915c101 SS |
1349 | iwl_mvm_init_reorder_buffer(mvm, mvm_sta->sta_id, |
1350 | baid_data, ssn, buf_size); | |
10b2b201 SS |
1351 | /* |
1352 | * protect the BA data with RCU to cover a case where our | |
1353 | * internal RX sync mechanism will timeout (not that it's | |
1354 | * supposed to happen) and we will free the session data while | |
1355 | * RX is being processed in parallel | |
1356 | */ | |
1357 | WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); | |
1358 | rcu_assign_pointer(mvm->baid_map[baid], baid_data); | |
1359 | } else if (mvm->rx_ba_sessions > 0) { | |
1360 | u8 baid = mvm_sta->tid_to_baid[tid]; | |
1361 | ||
1362 | /* check that restart flow didn't zero the counter */ | |
1363 | mvm->rx_ba_sessions--; | |
1364 | if (!iwl_mvm_has_new_rx_api(mvm)) | |
1365 | return 0; | |
1366 | ||
1367 | if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) | |
1368 | return -EINVAL; | |
1369 | ||
1370 | baid_data = rcu_access_pointer(mvm->baid_map[baid]); | |
1371 | if (WARN_ON(!baid_data)) | |
1372 | return -EINVAL; | |
1373 | ||
1374 | /* synchronize all rx queues so we can safely delete */ | |
b915c101 | 1375 | iwl_mvm_free_reorder(mvm, baid_data); |
10b2b201 | 1376 | del_timer_sync(&baid_data->session_timer); |
10b2b201 SS |
1377 | RCU_INIT_POINTER(mvm->baid_map[baid], NULL); |
1378 | kfree_rcu(baid_data, rcu_head); | |
113a0447 | 1379 | } |
10b2b201 | 1380 | return 0; |
113a0447 | 1381 | |
10b2b201 SS |
1382 | out_free: |
1383 | kfree(baid_data); | |
8ca151b5 JB |
1384 | return ret; |
1385 | } | |
1386 | ||
1387 | static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
1388 | int tid, u8 queue, bool start) | |
1389 | { | |
9d8ce6af | 1390 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1391 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
1392 | int ret; |
1393 | u32 status; | |
1394 | ||
1395 | lockdep_assert_held(&mvm->mutex); | |
1396 | ||
1397 | if (start) { | |
1398 | mvm_sta->tfd_queue_msk |= BIT(queue); | |
1399 | mvm_sta->tid_disable_agg &= ~BIT(tid); | |
1400 | } else { | |
1401 | mvm_sta->tfd_queue_msk &= ~BIT(queue); | |
1402 | mvm_sta->tid_disable_agg |= BIT(tid); | |
1403 | } | |
1404 | ||
1405 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); | |
1406 | cmd.sta_id = mvm_sta->sta_id; | |
1407 | cmd.add_modify = STA_MODE_MODIFY; | |
1408 | cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; | |
1409 | cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
1410 | cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); | |
1411 | ||
1412 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
1413 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
1414 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 1415 | &cmd, &status); |
8ca151b5 JB |
1416 | if (ret) |
1417 | return ret; | |
1418 | ||
837c4da9 | 1419 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
1420 | case ADD_STA_SUCCESS: |
1421 | break; | |
1422 | default: | |
1423 | ret = -EIO; | |
1424 | IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", | |
1425 | start ? "start" : "stopp", status); | |
1426 | break; | |
1427 | } | |
1428 | ||
1429 | return ret; | |
1430 | } | |
1431 | ||
b797e3fb | 1432 | const u8 tid_to_mac80211_ac[] = { |
8ca151b5 JB |
1433 | IEEE80211_AC_BE, |
1434 | IEEE80211_AC_BK, | |
1435 | IEEE80211_AC_BK, | |
1436 | IEEE80211_AC_BE, | |
1437 | IEEE80211_AC_VI, | |
1438 | IEEE80211_AC_VI, | |
1439 | IEEE80211_AC_VO, | |
1440 | IEEE80211_AC_VO, | |
1441 | }; | |
1442 | ||
3e56eadf JB |
1443 | static const u8 tid_to_ucode_ac[] = { |
1444 | AC_BE, | |
1445 | AC_BK, | |
1446 | AC_BK, | |
1447 | AC_BE, | |
1448 | AC_VI, | |
1449 | AC_VI, | |
1450 | AC_VO, | |
1451 | AC_VO, | |
1452 | }; | |
1453 | ||
8ca151b5 JB |
1454 | int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1455 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) | |
1456 | { | |
5b577a90 | 1457 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1458 | struct iwl_mvm_tid_data *tid_data; |
1459 | int txq_id; | |
4ecafae9 | 1460 | int ret; |
8ca151b5 JB |
1461 | |
1462 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
1463 | return -EINVAL; | |
1464 | ||
1465 | if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { | |
1466 | IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", | |
1467 | mvmsta->tid_data[tid].state); | |
1468 | return -ENXIO; | |
1469 | } | |
1470 | ||
1471 | lockdep_assert_held(&mvm->mutex); | |
1472 | ||
b2492501 AN |
1473 | spin_lock_bh(&mvmsta->lock); |
1474 | ||
1475 | /* possible race condition - we entered D0i3 while starting agg */ | |
1476 | if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { | |
1477 | spin_unlock_bh(&mvmsta->lock); | |
1478 | IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); | |
1479 | return -EIO; | |
1480 | } | |
1481 | ||
4ecafae9 LK |
1482 | spin_lock_bh(&mvm->queue_info_lock); |
1483 | ||
1484 | txq_id = iwl_mvm_find_free_queue(mvm, mvm->first_agg_queue, | |
1485 | mvm->last_agg_queue); | |
1486 | if (txq_id < 0) { | |
1487 | ret = txq_id; | |
1488 | spin_unlock_bh(&mvm->queue_info_lock); | |
1489 | IWL_ERR(mvm, "Failed to allocate agg queue\n"); | |
1490 | goto release_locks; | |
1491 | } | |
1492 | mvm->queue_info[txq_id].setup_reserved = true; | |
1493 | spin_unlock_bh(&mvm->queue_info_lock); | |
8ca151b5 | 1494 | |
8ca151b5 | 1495 | tid_data = &mvmsta->tid_data[tid]; |
9a886586 | 1496 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1497 | tid_data->txq_id = txq_id; |
1498 | *ssn = tid_data->ssn; | |
1499 | ||
1500 | IWL_DEBUG_TX_QUEUES(mvm, | |
1501 | "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", | |
1502 | mvmsta->sta_id, tid, txq_id, tid_data->ssn, | |
1503 | tid_data->next_reclaimed); | |
1504 | ||
1505 | if (tid_data->ssn == tid_data->next_reclaimed) { | |
1506 | tid_data->state = IWL_AGG_STARTING; | |
1507 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1508 | } else { | |
1509 | tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
1510 | } | |
1511 | ||
4ecafae9 LK |
1512 | ret = 0; |
1513 | ||
1514 | release_locks: | |
8ca151b5 JB |
1515 | spin_unlock_bh(&mvmsta->lock); |
1516 | ||
4ecafae9 | 1517 | return ret; |
8ca151b5 JB |
1518 | } |
1519 | ||
1520 | int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
bb81bb68 EG |
1521 | struct ieee80211_sta *sta, u16 tid, u8 buf_size, |
1522 | bool amsdu) | |
8ca151b5 | 1523 | { |
5b577a90 | 1524 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 1525 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
5d42e7b2 EG |
1526 | unsigned int wdg_timeout = |
1527 | iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); | |
eea76c36 | 1528 | int queue, ret; |
8ca151b5 JB |
1529 | u16 ssn; |
1530 | ||
eea76c36 EG |
1531 | struct iwl_trans_txq_scd_cfg cfg = { |
1532 | .sta_id = mvmsta->sta_id, | |
1533 | .tid = tid, | |
1534 | .frame_limit = buf_size, | |
1535 | .aggregate = true, | |
1536 | }; | |
1537 | ||
efed6640 ES |
1538 | BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) |
1539 | != IWL_MAX_TID_COUNT); | |
1540 | ||
8ca151b5 JB |
1541 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); |
1542 | ||
1543 | spin_lock_bh(&mvmsta->lock); | |
1544 | ssn = tid_data->ssn; | |
1545 | queue = tid_data->txq_id; | |
1546 | tid_data->state = IWL_AGG_ON; | |
efed6640 | 1547 | mvmsta->agg_tids |= BIT(tid); |
8ca151b5 | 1548 | tid_data->ssn = 0xffff; |
bb81bb68 | 1549 | tid_data->amsdu_in_ampdu_allowed = amsdu; |
8ca151b5 JB |
1550 | spin_unlock_bh(&mvmsta->lock); |
1551 | ||
eea76c36 | 1552 | cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; |
8ca151b5 | 1553 | |
eea76c36 EG |
1554 | iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[tid_to_mac80211_ac[tid]], |
1555 | ssn, &cfg, wdg_timeout); | |
fa7878e7 | 1556 | |
8ca151b5 JB |
1557 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); |
1558 | if (ret) | |
1559 | return -EIO; | |
1560 | ||
4ecafae9 LK |
1561 | /* No need to mark as reserved */ |
1562 | spin_lock_bh(&mvm->queue_info_lock); | |
1563 | mvm->queue_info[queue].setup_reserved = false; | |
1564 | spin_unlock_bh(&mvm->queue_info_lock); | |
1565 | ||
8ca151b5 JB |
1566 | /* |
1567 | * Even though in theory the peer could have different | |
1568 | * aggregation reorder buffer sizes for different sessions, | |
1569 | * our ucode doesn't allow for that and has a global limit | |
1570 | * for each station. Therefore, use the minimum of all the | |
1571 | * aggregation sessions and our default value. | |
1572 | */ | |
1573 | mvmsta->max_agg_bufsize = | |
1574 | min(mvmsta->max_agg_bufsize, buf_size); | |
1575 | mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; | |
1576 | ||
9ee718aa EL |
1577 | IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", |
1578 | sta->addr, tid); | |
1579 | ||
9e680946 | 1580 | return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); |
8ca151b5 JB |
1581 | } |
1582 | ||
1583 | int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1584 | struct ieee80211_sta *sta, u16 tid) | |
1585 | { | |
5b577a90 | 1586 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1587 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1588 | u16 txq_id; | |
1589 | int err; | |
1590 | ||
f9aa8dd3 EG |
1591 | |
1592 | /* | |
1593 | * If mac80211 is cleaning its state, then say that we finished since | |
1594 | * our state has been cleared anyway. | |
1595 | */ | |
1596 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
1597 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1598 | return 0; | |
1599 | } | |
1600 | ||
8ca151b5 JB |
1601 | spin_lock_bh(&mvmsta->lock); |
1602 | ||
1603 | txq_id = tid_data->txq_id; | |
1604 | ||
1605 | IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", | |
1606 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
1607 | ||
efed6640 ES |
1608 | mvmsta->agg_tids &= ~BIT(tid); |
1609 | ||
4ecafae9 LK |
1610 | /* No need to mark as reserved anymore */ |
1611 | spin_lock_bh(&mvm->queue_info_lock); | |
1612 | mvm->queue_info[txq_id].setup_reserved = false; | |
1613 | spin_unlock_bh(&mvm->queue_info_lock); | |
1614 | ||
8ca151b5 JB |
1615 | switch (tid_data->state) { |
1616 | case IWL_AGG_ON: | |
9a886586 | 1617 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1618 | |
1619 | IWL_DEBUG_TX_QUEUES(mvm, | |
1620 | "ssn = %d, next_recl = %d\n", | |
1621 | tid_data->ssn, tid_data->next_reclaimed); | |
1622 | ||
1623 | /* There are still packets for this RA / TID in the HW */ | |
1624 | if (tid_data->ssn != tid_data->next_reclaimed) { | |
1625 | tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; | |
1626 | err = 0; | |
1627 | break; | |
1628 | } | |
1629 | ||
1630 | tid_data->ssn = 0xffff; | |
f7f89e7b | 1631 | tid_data->state = IWL_AGG_OFF; |
f7f89e7b JB |
1632 | spin_unlock_bh(&mvmsta->lock); |
1633 | ||
1634 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1635 | ||
1636 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); | |
1637 | ||
4ecafae9 LK |
1638 | iwl_mvm_disable_txq(mvm, txq_id, |
1639 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1640 | 0); | |
f7f89e7b | 1641 | return 0; |
8ca151b5 JB |
1642 | case IWL_AGG_STARTING: |
1643 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
1644 | /* | |
1645 | * The agg session has been stopped before it was set up. This | |
1646 | * can happen when the AddBA timer times out for example. | |
1647 | */ | |
1648 | ||
1649 | /* No barriers since we are under mutex */ | |
1650 | lockdep_assert_held(&mvm->mutex); | |
8ca151b5 JB |
1651 | |
1652 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1653 | tid_data->state = IWL_AGG_OFF; | |
1654 | err = 0; | |
1655 | break; | |
1656 | default: | |
1657 | IWL_ERR(mvm, | |
1658 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
1659 | mvmsta->sta_id, tid, tid_data->state); | |
1660 | IWL_ERR(mvm, | |
1661 | "\ttid_data->txq_id = %d\n", tid_data->txq_id); | |
1662 | err = -EINVAL; | |
1663 | } | |
1664 | ||
1665 | spin_unlock_bh(&mvmsta->lock); | |
1666 | ||
1667 | return err; | |
1668 | } | |
1669 | ||
e3d9e7ce EG |
1670 | int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1671 | struct ieee80211_sta *sta, u16 tid) | |
1672 | { | |
5b577a90 | 1673 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
e3d9e7ce EG |
1674 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1675 | u16 txq_id; | |
b6658ff8 | 1676 | enum iwl_mvm_agg_state old_state; |
e3d9e7ce EG |
1677 | |
1678 | /* | |
1679 | * First set the agg state to OFF to avoid calling | |
1680 | * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. | |
1681 | */ | |
1682 | spin_lock_bh(&mvmsta->lock); | |
1683 | txq_id = tid_data->txq_id; | |
1684 | IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", | |
1685 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
b6658ff8 | 1686 | old_state = tid_data->state; |
e3d9e7ce | 1687 | tid_data->state = IWL_AGG_OFF; |
efed6640 | 1688 | mvmsta->agg_tids &= ~BIT(tid); |
e3d9e7ce EG |
1689 | spin_unlock_bh(&mvmsta->lock); |
1690 | ||
4ecafae9 LK |
1691 | /* No need to mark as reserved */ |
1692 | spin_lock_bh(&mvm->queue_info_lock); | |
1693 | mvm->queue_info[txq_id].setup_reserved = false; | |
1694 | spin_unlock_bh(&mvm->queue_info_lock); | |
1695 | ||
b6658ff8 | 1696 | if (old_state >= IWL_AGG_ON) { |
fe92e32a | 1697 | iwl_mvm_drain_sta(mvm, mvmsta, true); |
5888a40c | 1698 | if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) |
b6658ff8 | 1699 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); |
fe92e32a EG |
1700 | iwl_trans_wait_tx_queue_empty(mvm->trans, |
1701 | mvmsta->tfd_queue_msk); | |
1702 | iwl_mvm_drain_sta(mvm, mvmsta, false); | |
b6658ff8 | 1703 | |
f7f89e7b JB |
1704 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); |
1705 | ||
4ecafae9 LK |
1706 | iwl_mvm_disable_txq(mvm, tid_data->txq_id, |
1707 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1708 | 0); | |
b6658ff8 | 1709 | } |
e3d9e7ce | 1710 | |
e3d9e7ce EG |
1711 | return 0; |
1712 | } | |
1713 | ||
8ca151b5 JB |
1714 | static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) |
1715 | { | |
2dc2a15e | 1716 | int i, max = -1, max_offs = -1; |
8ca151b5 JB |
1717 | |
1718 | lockdep_assert_held(&mvm->mutex); | |
1719 | ||
2dc2a15e JB |
1720 | /* Pick the unused key offset with the highest 'deleted' |
1721 | * counter. Every time a key is deleted, all the counters | |
1722 | * are incremented and the one that was just deleted is | |
1723 | * reset to zero. Thus, the highest counter is the one | |
1724 | * that was deleted longest ago. Pick that one. | |
1725 | */ | |
1726 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1727 | if (test_bit(i, mvm->fw_key_table)) | |
1728 | continue; | |
1729 | if (mvm->fw_key_deleted[i] > max) { | |
1730 | max = mvm->fw_key_deleted[i]; | |
1731 | max_offs = i; | |
1732 | } | |
1733 | } | |
8ca151b5 | 1734 | |
2dc2a15e | 1735 | if (max_offs < 0) |
8ca151b5 JB |
1736 | return STA_KEY_IDX_INVALID; |
1737 | ||
2dc2a15e | 1738 | return max_offs; |
8ca151b5 JB |
1739 | } |
1740 | ||
5f7a1847 JB |
1741 | static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, |
1742 | struct ieee80211_vif *vif, | |
1743 | struct ieee80211_sta *sta) | |
8ca151b5 | 1744 | { |
5b530e95 | 1745 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 | 1746 | |
5f7a1847 JB |
1747 | if (sta) |
1748 | return iwl_mvm_sta_from_mac80211(sta); | |
8ca151b5 JB |
1749 | |
1750 | /* | |
1751 | * The device expects GTKs for station interfaces to be | |
1752 | * installed as GTKs for the AP station. If we have no | |
1753 | * station ID, then use AP's station ID. | |
1754 | */ | |
1755 | if (vif->type == NL80211_IFTYPE_STATION && | |
9513c5e1 AA |
1756 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { |
1757 | u8 sta_id = mvmvif->ap_sta_id; | |
1758 | ||
9513c5e1 AA |
1759 | /* |
1760 | * It is possible that the 'sta' parameter is NULL, | |
1761 | * for example when a GTK is removed - the sta_id will then | |
1762 | * be the AP ID, and no station was passed by mac80211. | |
1763 | */ | |
13303c0f | 1764 | return iwl_mvm_sta_from_staid_protected(mvm, sta_id); |
9513c5e1 | 1765 | } |
8ca151b5 | 1766 | |
5f7a1847 | 1767 | return NULL; |
8ca151b5 JB |
1768 | } |
1769 | ||
1770 | static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, | |
1771 | struct iwl_mvm_sta *mvm_sta, | |
ba3943b0 | 1772 | struct ieee80211_key_conf *keyconf, bool mcast, |
d6ee54a9 LC |
1773 | u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, |
1774 | u8 key_offset) | |
8ca151b5 | 1775 | { |
5a258aae | 1776 | struct iwl_mvm_add_sta_key_cmd cmd = {}; |
f9dc0004 | 1777 | __le16 key_flags; |
79920749 JB |
1778 | int ret; |
1779 | u32 status; | |
8ca151b5 JB |
1780 | u16 keyidx; |
1781 | int i; | |
2f6319d1 | 1782 | u8 sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1783 | |
1784 | keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1785 | STA_KEY_FLG_KEYID_MSK; | |
1786 | key_flags = cpu_to_le16(keyidx); | |
1787 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); | |
1788 | ||
1789 | switch (keyconf->cipher) { | |
1790 | case WLAN_CIPHER_SUITE_TKIP: | |
1791 | key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); | |
5a258aae | 1792 | cmd.tkip_rx_tsc_byte2 = tkip_iv32; |
8ca151b5 | 1793 | for (i = 0; i < 5; i++) |
5a258aae MS |
1794 | cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); |
1795 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1796 | break; |
1797 | case WLAN_CIPHER_SUITE_CCMP: | |
1798 | key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); | |
5a258aae | 1799 | memcpy(cmd.key, keyconf->key, keyconf->keylen); |
8ca151b5 | 1800 | break; |
ba3943b0 JB |
1801 | case WLAN_CIPHER_SUITE_WEP104: |
1802 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); | |
aa0cb08b | 1803 | /* fall through */ |
ba3943b0 JB |
1804 | case WLAN_CIPHER_SUITE_WEP40: |
1805 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); | |
1806 | memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); | |
1807 | break; | |
8ca151b5 | 1808 | default: |
e36e5433 MS |
1809 | key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); |
1810 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1811 | } |
1812 | ||
ba3943b0 | 1813 | if (mcast) |
8ca151b5 JB |
1814 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1815 | ||
d6ee54a9 | 1816 | cmd.key_offset = key_offset; |
5a258aae | 1817 | cmd.key_flags = key_flags; |
8ca151b5 JB |
1818 | cmd.sta_id = sta_id; |
1819 | ||
1820 | status = ADD_STA_SUCCESS; | |
a1022927 | 1821 | if (cmd_flags & CMD_ASYNC) |
f9dc0004 EG |
1822 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, |
1823 | sizeof(cmd), &cmd); | |
a1022927 EG |
1824 | else |
1825 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1826 | &cmd, &status); | |
8ca151b5 JB |
1827 | |
1828 | switch (status) { | |
1829 | case ADD_STA_SUCCESS: | |
1830 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); | |
1831 | break; | |
1832 | default: | |
1833 | ret = -EIO; | |
1834 | IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); | |
1835 | break; | |
1836 | } | |
1837 | ||
1838 | return ret; | |
1839 | } | |
1840 | ||
1841 | static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, | |
1842 | struct ieee80211_key_conf *keyconf, | |
1843 | u8 sta_id, bool remove_key) | |
1844 | { | |
1845 | struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; | |
1846 | ||
1847 | /* verify the key details match the required command's expectations */ | |
1848 | if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || | |
1849 | (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || | |
1850 | (keyconf->keyidx != 4 && keyconf->keyidx != 5))) | |
1851 | return -EINVAL; | |
1852 | ||
1853 | igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); | |
1854 | igtk_cmd.sta_id = cpu_to_le32(sta_id); | |
1855 | ||
1856 | if (remove_key) { | |
1857 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); | |
1858 | } else { | |
1859 | struct ieee80211_key_seq seq; | |
1860 | const u8 *pn; | |
1861 | ||
1862 | memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1863 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); |
1864 | pn = seq.aes_cmac.pn; | |
1865 | igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | | |
1866 | ((u64) pn[4] << 8) | | |
1867 | ((u64) pn[3] << 16) | | |
1868 | ((u64) pn[2] << 24) | | |
1869 | ((u64) pn[1] << 32) | | |
1870 | ((u64) pn[0] << 40)); | |
1871 | } | |
1872 | ||
1873 | IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", | |
1874 | remove_key ? "removing" : "installing", | |
1875 | igtk_cmd.sta_id); | |
1876 | ||
a1022927 | 1877 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
8ca151b5 JB |
1878 | sizeof(igtk_cmd), &igtk_cmd); |
1879 | } | |
1880 | ||
1881 | ||
1882 | static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, | |
1883 | struct ieee80211_vif *vif, | |
1884 | struct ieee80211_sta *sta) | |
1885 | { | |
5b530e95 | 1886 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1887 | |
1888 | if (sta) | |
1889 | return sta->addr; | |
1890 | ||
1891 | if (vif->type == NL80211_IFTYPE_STATION && | |
1892 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { | |
1893 | u8 sta_id = mvmvif->ap_sta_id; | |
1894 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1895 | lockdep_is_held(&mvm->mutex)); | |
1896 | return sta->addr; | |
1897 | } | |
1898 | ||
1899 | ||
1900 | return NULL; | |
1901 | } | |
1902 | ||
2f6319d1 JB |
1903 | static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1904 | struct ieee80211_vif *vif, | |
1905 | struct ieee80211_sta *sta, | |
ba3943b0 | 1906 | struct ieee80211_key_conf *keyconf, |
d6ee54a9 | 1907 | u8 key_offset, |
ba3943b0 | 1908 | bool mcast) |
2f6319d1 JB |
1909 | { |
1910 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1911 | int ret; | |
1912 | const u8 *addr; | |
1913 | struct ieee80211_key_seq seq; | |
1914 | u16 p1k[5]; | |
1915 | ||
1916 | switch (keyconf->cipher) { | |
1917 | case WLAN_CIPHER_SUITE_TKIP: | |
1918 | addr = iwl_mvm_get_mac_addr(mvm, vif, sta); | |
1919 | /* get phase 1 key from mac80211 */ | |
1920 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1921 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
ba3943b0 | 1922 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1923 | seq.tkip.iv32, p1k, 0, key_offset); |
2f6319d1 JB |
1924 | break; |
1925 | case WLAN_CIPHER_SUITE_CCMP: | |
ba3943b0 JB |
1926 | case WLAN_CIPHER_SUITE_WEP40: |
1927 | case WLAN_CIPHER_SUITE_WEP104: | |
1928 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, | |
d6ee54a9 | 1929 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
1930 | break; |
1931 | default: | |
ba3943b0 | 1932 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1933 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
1934 | } |
1935 | ||
1936 | return ret; | |
1937 | } | |
1938 | ||
1939 | static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, | |
ba3943b0 JB |
1940 | struct ieee80211_key_conf *keyconf, |
1941 | bool mcast) | |
2f6319d1 JB |
1942 | { |
1943 | struct iwl_mvm_add_sta_key_cmd cmd = {}; | |
1944 | __le16 key_flags; | |
1945 | int ret; | |
1946 | u32 status; | |
1947 | ||
1948 | key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1949 | STA_KEY_FLG_KEYID_MSK); | |
1950 | key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); | |
1951 | key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); | |
1952 | ||
ba3943b0 | 1953 | if (mcast) |
2f6319d1 JB |
1954 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1955 | ||
1956 | cmd.key_flags = key_flags; | |
1957 | cmd.key_offset = keyconf->hw_key_idx; | |
1958 | cmd.sta_id = sta_id; | |
1959 | ||
1960 | status = ADD_STA_SUCCESS; | |
1961 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1962 | &cmd, &status); | |
1963 | ||
1964 | switch (status) { | |
1965 | case ADD_STA_SUCCESS: | |
1966 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); | |
1967 | break; | |
1968 | default: | |
1969 | ret = -EIO; | |
1970 | IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); | |
1971 | break; | |
1972 | } | |
1973 | ||
1974 | return ret; | |
1975 | } | |
1976 | ||
8ca151b5 JB |
1977 | int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1978 | struct ieee80211_vif *vif, | |
1979 | struct ieee80211_sta *sta, | |
1980 | struct ieee80211_key_conf *keyconf, | |
d6ee54a9 | 1981 | u8 key_offset) |
8ca151b5 | 1982 | { |
ba3943b0 | 1983 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 | 1984 | struct iwl_mvm_sta *mvm_sta; |
2f6319d1 | 1985 | u8 sta_id; |
8ca151b5 | 1986 | int ret; |
11828dbc | 1987 | static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; |
8ca151b5 JB |
1988 | |
1989 | lockdep_assert_held(&mvm->mutex); | |
1990 | ||
1991 | /* Get the station id from the mvm local station table */ | |
5f7a1847 JB |
1992 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
1993 | if (!mvm_sta) { | |
1994 | IWL_ERR(mvm, "Failed to find station\n"); | |
8ca151b5 JB |
1995 | return -EINVAL; |
1996 | } | |
5f7a1847 | 1997 | sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1998 | |
1999 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { | |
2000 | ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); | |
2001 | goto end; | |
2002 | } | |
2003 | ||
2004 | /* | |
2005 | * It is possible that the 'sta' parameter is NULL, and thus | |
2006 | * there is a need to retrieve the sta from the local station table. | |
2007 | */ | |
2008 | if (!sta) { | |
2009 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
2010 | lockdep_is_held(&mvm->mutex)); | |
2011 | if (IS_ERR_OR_NULL(sta)) { | |
2012 | IWL_ERR(mvm, "Invalid station id\n"); | |
2013 | return -EINVAL; | |
2014 | } | |
2015 | } | |
2016 | ||
2f6319d1 | 2017 | if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
8ca151b5 JB |
2018 | return -EINVAL; |
2019 | ||
d6ee54a9 LC |
2020 | /* If the key_offset is not pre-assigned, we need to find a |
2021 | * new offset to use. In normal cases, the offset is not | |
2022 | * pre-assigned, but during HW_RESTART we want to reuse the | |
2023 | * same indices, so we pass them when this function is called. | |
2024 | * | |
2025 | * In D3 entry, we need to hardcoded the indices (because the | |
2026 | * firmware hardcodes the PTK offset to 0). In this case, we | |
2027 | * need to make sure we don't overwrite the hw_key_idx in the | |
2028 | * keyconf structure, because otherwise we cannot configure | |
2029 | * the original ones back when resuming. | |
2030 | */ | |
2031 | if (key_offset == STA_KEY_IDX_INVALID) { | |
2032 | key_offset = iwl_mvm_set_fw_key_idx(mvm); | |
2033 | if (key_offset == STA_KEY_IDX_INVALID) | |
8ca151b5 | 2034 | return -ENOSPC; |
d6ee54a9 | 2035 | keyconf->hw_key_idx = key_offset; |
8ca151b5 JB |
2036 | } |
2037 | ||
d6ee54a9 | 2038 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); |
9c3deeb5 | 2039 | if (ret) |
ba3943b0 | 2040 | goto end; |
ba3943b0 JB |
2041 | |
2042 | /* | |
2043 | * For WEP, the same key is used for multicast and unicast. Upload it | |
2044 | * again, using the same key offset, and now pointing the other one | |
2045 | * to the same key slot (offset). | |
2046 | * If this fails, remove the original as well. | |
2047 | */ | |
2048 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
2049 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { | |
d6ee54a9 LC |
2050 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, |
2051 | key_offset, !mcast); | |
ba3943b0 | 2052 | if (ret) { |
ba3943b0 | 2053 | __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
9c3deeb5 | 2054 | goto end; |
ba3943b0 JB |
2055 | } |
2056 | } | |
8ca151b5 | 2057 | |
9c3deeb5 LC |
2058 | __set_bit(key_offset, mvm->fw_key_table); |
2059 | ||
8ca151b5 JB |
2060 | end: |
2061 | IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
2062 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, | |
11828dbc | 2063 | sta ? sta->addr : zero_addr, ret); |
8ca151b5 JB |
2064 | return ret; |
2065 | } | |
2066 | ||
2067 | int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, | |
2068 | struct ieee80211_vif *vif, | |
2069 | struct ieee80211_sta *sta, | |
2070 | struct ieee80211_key_conf *keyconf) | |
2071 | { | |
ba3943b0 | 2072 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 JB |
2073 | struct iwl_mvm_sta *mvm_sta; |
2074 | u8 sta_id = IWL_MVM_STATION_COUNT; | |
2dc2a15e | 2075 | int ret, i; |
8ca151b5 JB |
2076 | |
2077 | lockdep_assert_held(&mvm->mutex); | |
2078 | ||
5f7a1847 JB |
2079 | /* Get the station from the mvm local station table */ |
2080 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); | |
8ca151b5 JB |
2081 | |
2082 | IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", | |
2083 | keyconf->keyidx, sta_id); | |
2084 | ||
2085 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) | |
2086 | return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); | |
2087 | ||
2f6319d1 | 2088 | if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { |
8ca151b5 JB |
2089 | IWL_ERR(mvm, "offset %d not used in fw key table.\n", |
2090 | keyconf->hw_key_idx); | |
2091 | return -ENOENT; | |
2092 | } | |
2093 | ||
2dc2a15e JB |
2094 | /* track which key was deleted last */ |
2095 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
2096 | if (mvm->fw_key_deleted[i] < U8_MAX) | |
2097 | mvm->fw_key_deleted[i]++; | |
2098 | } | |
2099 | mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; | |
2100 | ||
5f7a1847 | 2101 | if (!mvm_sta) { |
8ca151b5 JB |
2102 | IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); |
2103 | return 0; | |
2104 | } | |
2105 | ||
5f7a1847 JB |
2106 | sta_id = mvm_sta->sta_id; |
2107 | ||
ba3943b0 JB |
2108 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
2109 | if (ret) | |
2110 | return ret; | |
2111 | ||
2112 | /* delete WEP key twice to get rid of (now useless) offset */ | |
2113 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
2114 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) | |
2115 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); | |
2116 | ||
2117 | return ret; | |
8ca151b5 JB |
2118 | } |
2119 | ||
2120 | void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, | |
2121 | struct ieee80211_vif *vif, | |
2122 | struct ieee80211_key_conf *keyconf, | |
2123 | struct ieee80211_sta *sta, u32 iv32, | |
2124 | u16 *phase1key) | |
2125 | { | |
c3eb536a | 2126 | struct iwl_mvm_sta *mvm_sta; |
ba3943b0 | 2127 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 2128 | |
c3eb536a BL |
2129 | rcu_read_lock(); |
2130 | ||
5f7a1847 JB |
2131 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
2132 | if (WARN_ON_ONCE(!mvm_sta)) | |
45854360 | 2133 | goto unlock; |
ba3943b0 | 2134 | iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 2135 | iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); |
45854360 JB |
2136 | |
2137 | unlock: | |
c3eb536a | 2138 | rcu_read_unlock(); |
8ca151b5 JB |
2139 | } |
2140 | ||
9cc40712 JB |
2141 | void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, |
2142 | struct ieee80211_sta *sta) | |
8ca151b5 | 2143 | { |
5b577a90 | 2144 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 2145 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 2146 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 2147 | .sta_id = mvmsta->sta_id, |
5af01772 | 2148 | .station_flags_msk = cpu_to_le32(STA_FLG_PS), |
9cc40712 | 2149 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 JB |
2150 | }; |
2151 | int ret; | |
2152 | ||
854c5705 SS |
2153 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
2154 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
8ca151b5 JB |
2155 | if (ret) |
2156 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
2157 | } | |
2158 | ||
9cc40712 JB |
2159 | void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, |
2160 | struct ieee80211_sta *sta, | |
8ca151b5 | 2161 | enum ieee80211_frame_release_type reason, |
3e56eadf JB |
2162 | u16 cnt, u16 tids, bool more_data, |
2163 | bool agg) | |
8ca151b5 | 2164 | { |
5b577a90 | 2165 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 2166 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 2167 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 2168 | .sta_id = mvmsta->sta_id, |
8ca151b5 JB |
2169 | .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, |
2170 | .sleep_tx_count = cpu_to_le16(cnt), | |
9cc40712 | 2171 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 | 2172 | }; |
3e56eadf JB |
2173 | int tid, ret; |
2174 | unsigned long _tids = tids; | |
2175 | ||
2176 | /* convert TIDs to ACs - we don't support TSPEC so that's OK | |
2177 | * Note that this field is reserved and unused by firmware not | |
2178 | * supporting GO uAPSD, so it's safe to always do this. | |
2179 | */ | |
2180 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) | |
2181 | cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); | |
2182 | ||
2183 | /* If we're releasing frames from aggregation queues then check if the | |
2184 | * all queues combined that we're releasing frames from have | |
2185 | * - more frames than the service period, in which case more_data | |
2186 | * needs to be set | |
2187 | * - fewer than 'cnt' frames, in which case we need to adjust the | |
2188 | * firmware command (but do that unconditionally) | |
2189 | */ | |
2190 | if (agg) { | |
2191 | int remaining = cnt; | |
36be0eb6 | 2192 | int sleep_tx_count; |
3e56eadf JB |
2193 | |
2194 | spin_lock_bh(&mvmsta->lock); | |
2195 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { | |
2196 | struct iwl_mvm_tid_data *tid_data; | |
2197 | u16 n_queued; | |
2198 | ||
2199 | tid_data = &mvmsta->tid_data[tid]; | |
2200 | if (WARN(tid_data->state != IWL_AGG_ON && | |
2201 | tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, | |
2202 | "TID %d state is %d\n", | |
2203 | tid, tid_data->state)) { | |
2204 | spin_unlock_bh(&mvmsta->lock); | |
2205 | ieee80211_sta_eosp(sta); | |
2206 | return; | |
2207 | } | |
2208 | ||
2209 | n_queued = iwl_mvm_tid_queued(tid_data); | |
2210 | if (n_queued > remaining) { | |
2211 | more_data = true; | |
2212 | remaining = 0; | |
2213 | break; | |
2214 | } | |
2215 | remaining -= n_queued; | |
2216 | } | |
36be0eb6 EG |
2217 | sleep_tx_count = cnt - remaining; |
2218 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) | |
2219 | mvmsta->sleep_tx_count = sleep_tx_count; | |
3e56eadf JB |
2220 | spin_unlock_bh(&mvmsta->lock); |
2221 | ||
36be0eb6 | 2222 | cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); |
3e56eadf JB |
2223 | if (WARN_ON(cnt - remaining == 0)) { |
2224 | ieee80211_sta_eosp(sta); | |
2225 | return; | |
2226 | } | |
2227 | } | |
2228 | ||
2229 | /* Note: this is ignored by firmware not supporting GO uAPSD */ | |
2230 | if (more_data) | |
2231 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); | |
2232 | ||
2233 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { | |
2234 | mvmsta->next_status_eosp = true; | |
2235 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); | |
2236 | } else { | |
2237 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); | |
2238 | } | |
8ca151b5 | 2239 | |
156f92f2 EG |
2240 | /* block the Tx queues until the FW updated the sleep Tx count */ |
2241 | iwl_trans_block_txq_ptrs(mvm->trans, true); | |
2242 | ||
2243 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, | |
2244 | CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, | |
854c5705 | 2245 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); |
8ca151b5 JB |
2246 | if (ret) |
2247 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
2248 | } | |
3e56eadf | 2249 | |
0416841d JB |
2250 | void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, |
2251 | struct iwl_rx_cmd_buffer *rxb) | |
3e56eadf JB |
2252 | { |
2253 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
2254 | struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; | |
2255 | struct ieee80211_sta *sta; | |
2256 | u32 sta_id = le32_to_cpu(notif->sta_id); | |
2257 | ||
2258 | if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) | |
0416841d | 2259 | return; |
3e56eadf JB |
2260 | |
2261 | rcu_read_lock(); | |
2262 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
2263 | if (!IS_ERR_OR_NULL(sta)) | |
2264 | ieee80211_sta_eosp(sta); | |
2265 | rcu_read_unlock(); | |
3e56eadf | 2266 | } |
09b0ce1a AO |
2267 | |
2268 | void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, | |
2269 | struct iwl_mvm_sta *mvmsta, bool disable) | |
2270 | { | |
2271 | struct iwl_mvm_add_sta_cmd cmd = { | |
2272 | .add_modify = STA_MODE_MODIFY, | |
2273 | .sta_id = mvmsta->sta_id, | |
2274 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
2275 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
2276 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), | |
2277 | }; | |
2278 | int ret; | |
2279 | ||
854c5705 SS |
2280 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
2281 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
09b0ce1a AO |
2282 | if (ret) |
2283 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
2284 | } | |
003e5236 AO |
2285 | |
2286 | void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, | |
2287 | struct ieee80211_sta *sta, | |
2288 | bool disable) | |
2289 | { | |
2290 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
2291 | ||
2292 | spin_lock_bh(&mvm_sta->lock); | |
2293 | ||
2294 | if (mvm_sta->disable_tx == disable) { | |
2295 | spin_unlock_bh(&mvm_sta->lock); | |
2296 | return; | |
2297 | } | |
2298 | ||
2299 | mvm_sta->disable_tx = disable; | |
2300 | ||
2301 | /* | |
0d365ae5 SS |
2302 | * Tell mac80211 to start/stop queuing tx for this station, |
2303 | * but don't stop queuing if there are still pending frames | |
003e5236 AO |
2304 | * for this station. |
2305 | */ | |
2306 | if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) | |
2307 | ieee80211_sta_block_awake(mvm->hw, sta, disable); | |
2308 | ||
2309 | iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); | |
2310 | ||
2311 | spin_unlock_bh(&mvm_sta->lock); | |
2312 | } | |
2313 | ||
2314 | void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, | |
2315 | struct iwl_mvm_vif *mvmvif, | |
2316 | bool disable) | |
2317 | { | |
2318 | struct ieee80211_sta *sta; | |
2319 | struct iwl_mvm_sta *mvm_sta; | |
2320 | int i; | |
2321 | ||
2322 | lockdep_assert_held(&mvm->mutex); | |
2323 | ||
2324 | /* Block/unblock all the stations of the given mvmvif */ | |
2325 | for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { | |
2326 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], | |
2327 | lockdep_is_held(&mvm->mutex)); | |
2328 | if (IS_ERR_OR_NULL(sta)) | |
2329 | continue; | |
2330 | ||
2331 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
2332 | if (mvm_sta->mac_id_n_color != | |
2333 | FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) | |
2334 | continue; | |
2335 | ||
2336 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); | |
2337 | } | |
2338 | } | |
dc88b4ba LC |
2339 | |
2340 | void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
2341 | { | |
2342 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
2343 | struct iwl_mvm_sta *mvmsta; | |
2344 | ||
2345 | rcu_read_lock(); | |
2346 | ||
2347 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); | |
2348 | ||
2349 | if (!WARN_ON(!mvmsta)) | |
2350 | iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); | |
2351 | ||
2352 | rcu_read_unlock(); | |
2353 | } |