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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 | ||
a0f6bf2a AN |
226 | static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm, |
227 | struct ieee80211_sta *sta) | |
228 | { | |
229 | unsigned long used_hw_queues; | |
230 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
5d42e7b2 EG |
231 | unsigned int wdg_timeout = |
232 | iwl_mvm_get_wd_timeout(mvm, NULL, true, false); | |
a0f6bf2a AN |
233 | u32 ac; |
234 | ||
235 | lockdep_assert_held(&mvm->mutex); | |
236 | ||
237 | used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL); | |
238 | ||
239 | /* Find available queues, and allocate them to the ACs */ | |
240 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
241 | u8 queue = find_first_zero_bit(&used_hw_queues, | |
242 | mvm->first_agg_queue); | |
243 | ||
244 | if (queue >= mvm->first_agg_queue) { | |
245 | IWL_ERR(mvm, "Failed to allocate STA queue\n"); | |
246 | return -EBUSY; | |
247 | } | |
248 | ||
249 | __set_bit(queue, &used_hw_queues); | |
250 | mvmsta->hw_queue[ac] = queue; | |
251 | } | |
252 | ||
253 | /* Found a place for all queues - enable them */ | |
254 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
255 | iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac], | |
4ecafae9 | 256 | mvmsta->hw_queue[ac], |
5c1156ef LK |
257 | iwl_mvm_ac_to_tx_fifo[ac], 0, |
258 | wdg_timeout); | |
a0f6bf2a AN |
259 | mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]); |
260 | } | |
261 | ||
262 | return 0; | |
263 | } | |
264 | ||
265 | static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm, | |
266 | struct ieee80211_sta *sta) | |
267 | { | |
268 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
269 | unsigned long sta_msk; | |
270 | int i; | |
271 | ||
272 | lockdep_assert_held(&mvm->mutex); | |
273 | ||
274 | /* disable the TDLS STA-specific queues */ | |
275 | sta_msk = mvmsta->tfd_queue_msk; | |
a4ca3ed4 | 276 | for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE) |
06ecdba3 | 277 | iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0); |
a0f6bf2a AN |
278 | } |
279 | ||
24afba76 LK |
280 | static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, |
281 | struct ieee80211_sta *sta, u8 ac, int tid, | |
282 | struct ieee80211_hdr *hdr) | |
283 | { | |
284 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
285 | struct iwl_trans_txq_scd_cfg cfg = { | |
286 | .fifo = iwl_mvm_ac_to_tx_fifo[ac], | |
287 | .sta_id = mvmsta->sta_id, | |
288 | .tid = tid, | |
289 | .frame_limit = IWL_FRAME_LIMIT, | |
290 | }; | |
291 | unsigned int wdg_timeout = | |
292 | iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); | |
293 | u8 mac_queue = mvmsta->vif->hw_queue[ac]; | |
294 | int queue = -1; | |
295 | int ssn; | |
296 | ||
297 | lockdep_assert_held(&mvm->mutex); | |
298 | ||
299 | spin_lock(&mvm->queue_info_lock); | |
300 | ||
301 | /* | |
302 | * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one | |
303 | * exists | |
304 | */ | |
305 | if (!ieee80211_is_data_qos(hdr->frame_control) || | |
306 | ieee80211_is_qos_nullfunc(hdr->frame_control)) { | |
307 | queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_MGMT_QUEUE, | |
308 | IWL_MVM_DQA_MAX_MGMT_QUEUE); | |
309 | if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) | |
310 | IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", | |
311 | queue); | |
312 | ||
313 | /* If no such queue is found, we'll use a DATA queue instead */ | |
314 | } | |
315 | ||
316 | if (queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { | |
317 | queue = mvmsta->reserved_queue; | |
318 | IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); | |
319 | } | |
320 | ||
321 | if (queue < 0) | |
322 | queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_DATA_QUEUE, | |
323 | IWL_MVM_DQA_MAX_DATA_QUEUE); | |
324 | if (queue >= 0) | |
325 | mvm->queue_info[queue].setup_reserved = false; | |
326 | ||
327 | spin_unlock(&mvm->queue_info_lock); | |
328 | ||
329 | /* TODO: support shared queues for same RA */ | |
330 | if (queue < 0) | |
331 | return -ENOSPC; | |
332 | ||
333 | /* | |
334 | * Actual en/disablement of aggregations is through the ADD_STA HCMD, | |
335 | * but for configuring the SCD to send A-MPDUs we need to mark the queue | |
336 | * as aggregatable. | |
337 | * Mark all DATA queues as allowing to be aggregated at some point | |
338 | */ | |
339 | cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE); | |
340 | ||
341 | IWL_DEBUG_TX_QUEUES(mvm, "Allocating queue #%d to sta %d on tid %d\n", | |
342 | queue, mvmsta->sta_id, tid); | |
343 | ||
344 | ssn = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)); | |
345 | iwl_mvm_enable_txq(mvm, queue, mac_queue, ssn, &cfg, | |
346 | wdg_timeout); | |
347 | ||
348 | spin_lock_bh(&mvmsta->lock); | |
349 | mvmsta->tid_data[tid].txq_id = queue; | |
350 | mvmsta->tfd_queue_msk |= BIT(queue); | |
351 | ||
352 | if (mvmsta->reserved_queue == queue) | |
353 | mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; | |
354 | spin_unlock_bh(&mvmsta->lock); | |
355 | ||
356 | return iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); | |
357 | } | |
358 | ||
359 | static inline u8 iwl_mvm_tid_to_ac_queue(int tid) | |
360 | { | |
361 | if (tid == IWL_MAX_TID_COUNT) | |
362 | return IEEE80211_AC_VO; /* MGMT */ | |
363 | ||
364 | return tid_to_mac80211_ac[tid]; | |
365 | } | |
366 | ||
367 | static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, | |
368 | struct ieee80211_sta *sta, int tid) | |
369 | { | |
370 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
371 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; | |
372 | struct sk_buff *skb; | |
373 | struct ieee80211_hdr *hdr; | |
374 | struct sk_buff_head deferred_tx; | |
375 | u8 mac_queue; | |
376 | bool no_queue = false; /* Marks if there is a problem with the queue */ | |
377 | u8 ac; | |
378 | ||
379 | lockdep_assert_held(&mvm->mutex); | |
380 | ||
381 | skb = skb_peek(&tid_data->deferred_tx_frames); | |
382 | if (!skb) | |
383 | return; | |
384 | hdr = (void *)skb->data; | |
385 | ||
386 | ac = iwl_mvm_tid_to_ac_queue(tid); | |
387 | mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; | |
388 | ||
389 | if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE && | |
390 | iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { | |
391 | IWL_ERR(mvm, | |
392 | "Can't alloc TXQ for sta %d tid %d - dropping frame\n", | |
393 | mvmsta->sta_id, tid); | |
394 | ||
395 | /* | |
396 | * Mark queue as problematic so later the deferred traffic is | |
397 | * freed, as we can do nothing with it | |
398 | */ | |
399 | no_queue = true; | |
400 | } | |
401 | ||
402 | __skb_queue_head_init(&deferred_tx); | |
403 | ||
404 | spin_lock(&mvmsta->lock); | |
405 | skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); | |
406 | spin_unlock(&mvmsta->lock); | |
407 | ||
408 | /* Disable bottom-halves when entering TX path */ | |
409 | local_bh_disable(); | |
410 | while ((skb = __skb_dequeue(&deferred_tx))) | |
411 | if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) | |
412 | ieee80211_free_txskb(mvm->hw, skb); | |
413 | local_bh_enable(); | |
414 | ||
415 | /* Wake queue */ | |
416 | iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); | |
417 | } | |
418 | ||
419 | void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) | |
420 | { | |
421 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, | |
422 | add_stream_wk); | |
423 | struct ieee80211_sta *sta; | |
424 | struct iwl_mvm_sta *mvmsta; | |
425 | unsigned long deferred_tid_traffic; | |
426 | int sta_id, tid; | |
427 | ||
428 | mutex_lock(&mvm->mutex); | |
429 | ||
430 | /* Go over all stations with deferred traffic */ | |
431 | for_each_set_bit(sta_id, mvm->sta_deferred_frames, | |
432 | IWL_MVM_STATION_COUNT) { | |
433 | clear_bit(sta_id, mvm->sta_deferred_frames); | |
434 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
435 | lockdep_is_held(&mvm->mutex)); | |
436 | if (IS_ERR_OR_NULL(sta)) | |
437 | continue; | |
438 | ||
439 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
440 | deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; | |
441 | ||
442 | for_each_set_bit(tid, &deferred_tid_traffic, | |
443 | IWL_MAX_TID_COUNT + 1) | |
444 | iwl_mvm_tx_deferred_stream(mvm, sta, tid); | |
445 | } | |
446 | ||
447 | mutex_unlock(&mvm->mutex); | |
448 | } | |
449 | ||
450 | static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, | |
451 | struct ieee80211_sta *sta) | |
452 | { | |
453 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
454 | int queue; | |
455 | ||
456 | spin_lock_bh(&mvm->queue_info_lock); | |
457 | ||
458 | /* Make sure we have free resources for this STA */ | |
459 | queue = iwl_mvm_find_free_queue(mvm, IWL_MVM_DQA_MIN_DATA_QUEUE, | |
460 | IWL_MVM_DQA_MAX_DATA_QUEUE); | |
461 | if (queue < 0) { | |
462 | spin_unlock_bh(&mvm->queue_info_lock); | |
463 | IWL_ERR(mvm, "No available queues for new station\n"); | |
464 | return -ENOSPC; | |
465 | } | |
466 | mvm->queue_info[queue].setup_reserved = true; | |
467 | ||
468 | spin_unlock_bh(&mvm->queue_info_lock); | |
469 | ||
470 | mvmsta->reserved_queue = queue; | |
471 | ||
472 | IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", | |
473 | queue, mvmsta->sta_id); | |
474 | ||
475 | return 0; | |
476 | } | |
477 | ||
8ca151b5 JB |
478 | int iwl_mvm_add_sta(struct iwl_mvm *mvm, |
479 | struct ieee80211_vif *vif, | |
480 | struct ieee80211_sta *sta) | |
481 | { | |
482 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 483 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
a571f5f6 | 484 | struct iwl_mvm_rxq_dup_data *dup_data; |
8ca151b5 JB |
485 | int i, ret, sta_id; |
486 | ||
487 | lockdep_assert_held(&mvm->mutex); | |
488 | ||
489 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) | |
b92e661b EP |
490 | sta_id = iwl_mvm_find_free_sta_id(mvm, |
491 | ieee80211_vif_type_p2p(vif)); | |
8ca151b5 JB |
492 | else |
493 | sta_id = mvm_sta->sta_id; | |
494 | ||
36f4631c | 495 | if (sta_id == IWL_MVM_STATION_COUNT) |
8ca151b5 JB |
496 | return -ENOSPC; |
497 | ||
498 | spin_lock_init(&mvm_sta->lock); | |
499 | ||
500 | mvm_sta->sta_id = sta_id; | |
501 | mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, | |
502 | mvmvif->color); | |
503 | mvm_sta->vif = vif; | |
504 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
9ee718aa EL |
505 | mvm_sta->tx_protection = 0; |
506 | mvm_sta->tt_tx_protection = false; | |
8ca151b5 JB |
507 | |
508 | /* HW restart, don't assume the memory has been zeroed */ | |
e3d4bc8c | 509 | atomic_set(&mvm->pending_frames[sta_id], 0); |
69191afe | 510 | mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ |
8ca151b5 | 511 | mvm_sta->tfd_queue_msk = 0; |
a0f6bf2a AN |
512 | |
513 | /* allocate new queues for a TDLS station */ | |
514 | if (sta->tdls) { | |
515 | ret = iwl_mvm_tdls_sta_init(mvm, sta); | |
516 | if (ret) | |
517 | return ret; | |
24afba76 | 518 | } else if (!iwl_mvm_is_dqa_supported(mvm)) { |
a0f6bf2a AN |
519 | for (i = 0; i < IEEE80211_NUM_ACS; i++) |
520 | if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) | |
521 | mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); | |
522 | } | |
8ca151b5 | 523 | |
6d9d32b8 | 524 | /* for HW restart - reset everything but the sequence number */ |
24afba76 | 525 | for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { |
6d9d32b8 JB |
526 | u16 seq = mvm_sta->tid_data[i].seq_number; |
527 | memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); | |
528 | mvm_sta->tid_data[i].seq_number = seq; | |
24afba76 LK |
529 | |
530 | if (!iwl_mvm_is_dqa_supported(mvm)) | |
531 | continue; | |
532 | ||
533 | /* | |
534 | * Mark all queues for this STA as unallocated and defer TX | |
535 | * frames until the queue is allocated | |
536 | */ | |
537 | mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; | |
538 | skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); | |
6d9d32b8 | 539 | } |
24afba76 | 540 | mvm_sta->deferred_traffic_tid_map = 0; |
efed6640 | 541 | mvm_sta->agg_tids = 0; |
8ca151b5 | 542 | |
a571f5f6 SS |
543 | if (iwl_mvm_has_new_rx_api(mvm) && |
544 | !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
545 | dup_data = kcalloc(mvm->trans->num_rx_queues, | |
546 | sizeof(*dup_data), | |
547 | GFP_KERNEL); | |
548 | if (!dup_data) | |
549 | return -ENOMEM; | |
550 | mvm_sta->dup_data = dup_data; | |
551 | } | |
552 | ||
24afba76 LK |
553 | if (iwl_mvm_is_dqa_supported(mvm)) { |
554 | ret = iwl_mvm_reserve_sta_stream(mvm, sta); | |
555 | if (ret) | |
556 | goto err; | |
557 | } | |
558 | ||
559 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, false, 0); | |
8ca151b5 | 560 | if (ret) |
a0f6bf2a | 561 | goto err; |
8ca151b5 | 562 | |
9e848010 JB |
563 | if (vif->type == NL80211_IFTYPE_STATION) { |
564 | if (!sta->tdls) { | |
565 | WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); | |
566 | mvmvif->ap_sta_id = sta_id; | |
567 | } else { | |
568 | WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); | |
569 | } | |
570 | } | |
8ca151b5 JB |
571 | |
572 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); | |
573 | ||
574 | return 0; | |
a0f6bf2a AN |
575 | |
576 | err: | |
577 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
578 | return ret; | |
8ca151b5 JB |
579 | } |
580 | ||
7a453973 JB |
581 | int iwl_mvm_update_sta(struct iwl_mvm *mvm, |
582 | struct ieee80211_vif *vif, | |
583 | struct ieee80211_sta *sta) | |
584 | { | |
24afba76 | 585 | return iwl_mvm_sta_send_to_fw(mvm, sta, true, 0); |
7a453973 JB |
586 | } |
587 | ||
8ca151b5 JB |
588 | int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, |
589 | bool drain) | |
590 | { | |
f9dc0004 | 591 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
592 | int ret; |
593 | u32 status; | |
594 | ||
595 | lockdep_assert_held(&mvm->mutex); | |
596 | ||
597 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
598 | cmd.sta_id = mvmsta->sta_id; | |
599 | cmd.add_modify = STA_MODE_MODIFY; | |
600 | cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; | |
601 | cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); | |
602 | ||
603 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
604 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
605 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 606 | &cmd, &status); |
8ca151b5 JB |
607 | if (ret) |
608 | return ret; | |
609 | ||
837c4da9 | 610 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
611 | case ADD_STA_SUCCESS: |
612 | IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", | |
613 | mvmsta->sta_id); | |
614 | break; | |
615 | default: | |
616 | ret = -EIO; | |
617 | IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", | |
618 | mvmsta->sta_id); | |
619 | break; | |
620 | } | |
621 | ||
622 | return ret; | |
623 | } | |
624 | ||
625 | /* | |
626 | * Remove a station from the FW table. Before sending the command to remove | |
627 | * the station validate that the station is indeed known to the driver (sanity | |
628 | * only). | |
629 | */ | |
630 | static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) | |
631 | { | |
632 | struct ieee80211_sta *sta; | |
633 | struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { | |
634 | .sta_id = sta_id, | |
635 | }; | |
636 | int ret; | |
637 | ||
638 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
639 | lockdep_is_held(&mvm->mutex)); | |
640 | ||
641 | /* Note: internal stations are marked as error values */ | |
642 | if (!sta) { | |
643 | IWL_ERR(mvm, "Invalid station id\n"); | |
644 | return -EINVAL; | |
645 | } | |
646 | ||
a1022927 | 647 | ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, |
8ca151b5 JB |
648 | sizeof(rm_sta_cmd), &rm_sta_cmd); |
649 | if (ret) { | |
650 | IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); | |
651 | return ret; | |
652 | } | |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
657 | void iwl_mvm_sta_drained_wk(struct work_struct *wk) | |
658 | { | |
659 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); | |
660 | u8 sta_id; | |
661 | ||
662 | /* | |
663 | * The mutex is needed because of the SYNC cmd, but not only: if the | |
664 | * work would run concurrently with iwl_mvm_rm_sta, it would run before | |
665 | * iwl_mvm_rm_sta sets the station as busy, and exit. Then | |
666 | * iwl_mvm_rm_sta would set the station as busy, and nobody will clean | |
667 | * that later. | |
668 | */ | |
669 | mutex_lock(&mvm->mutex); | |
670 | ||
671 | for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { | |
672 | int ret; | |
673 | struct ieee80211_sta *sta = | |
674 | rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
675 | lockdep_is_held(&mvm->mutex)); | |
676 | ||
1ddbbb0c JB |
677 | /* |
678 | * This station is in use or RCU-removed; the latter happens in | |
679 | * managed mode, where mac80211 removes the station before we | |
680 | * can remove it from firmware (we can only do that after the | |
681 | * MAC is marked unassociated), and possibly while the deauth | |
682 | * frame to disconnect from the AP is still queued. Then, the | |
683 | * station pointer is -ENOENT when the last skb is reclaimed. | |
684 | */ | |
685 | if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) | |
8ca151b5 JB |
686 | continue; |
687 | ||
688 | if (PTR_ERR(sta) == -EINVAL) { | |
689 | IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", | |
690 | sta_id); | |
691 | continue; | |
692 | } | |
693 | ||
694 | if (!sta) { | |
695 | IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", | |
696 | sta_id); | |
697 | continue; | |
698 | } | |
699 | ||
700 | WARN_ON(PTR_ERR(sta) != -EBUSY); | |
701 | /* This station was removed and we waited until it got drained, | |
702 | * we can now proceed and remove it. | |
703 | */ | |
704 | ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
705 | if (ret) { | |
706 | IWL_ERR(mvm, | |
707 | "Couldn't remove sta %d after it was drained\n", | |
708 | sta_id); | |
709 | continue; | |
710 | } | |
c531c771 | 711 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 | 712 | clear_bit(sta_id, mvm->sta_drained); |
a0f6bf2a AN |
713 | |
714 | if (mvm->tfd_drained[sta_id]) { | |
715 | unsigned long i, msk = mvm->tfd_drained[sta_id]; | |
716 | ||
a4ca3ed4 | 717 | for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) |
06ecdba3 AN |
718 | iwl_mvm_disable_txq(mvm, i, i, |
719 | IWL_MAX_TID_COUNT, 0); | |
a0f6bf2a AN |
720 | |
721 | mvm->tfd_drained[sta_id] = 0; | |
722 | IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", | |
723 | sta_id, msk); | |
724 | } | |
8ca151b5 JB |
725 | } |
726 | ||
727 | mutex_unlock(&mvm->mutex); | |
728 | } | |
729 | ||
24afba76 LK |
730 | static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, |
731 | struct ieee80211_vif *vif, | |
732 | struct iwl_mvm_sta *mvm_sta) | |
733 | { | |
734 | int ac; | |
735 | int i; | |
736 | ||
737 | lockdep_assert_held(&mvm->mutex); | |
738 | ||
739 | for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { | |
740 | if (mvm_sta->tid_data[i].txq_id == IEEE80211_INVAL_HW_QUEUE) | |
741 | continue; | |
742 | ||
743 | ac = iwl_mvm_tid_to_ac_queue(i); | |
744 | iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, | |
745 | vif->hw_queue[ac], i, 0); | |
746 | mvm_sta->tid_data[i].txq_id = IEEE80211_INVAL_HW_QUEUE; | |
747 | } | |
748 | } | |
749 | ||
8ca151b5 JB |
750 | int iwl_mvm_rm_sta(struct iwl_mvm *mvm, |
751 | struct ieee80211_vif *vif, | |
752 | struct ieee80211_sta *sta) | |
753 | { | |
754 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 755 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
756 | int ret; |
757 | ||
758 | lockdep_assert_held(&mvm->mutex); | |
759 | ||
a571f5f6 SS |
760 | if (iwl_mvm_has_new_rx_api(mvm)) |
761 | kfree(mvm_sta->dup_data); | |
762 | ||
8ca151b5 JB |
763 | if (vif->type == NL80211_IFTYPE_STATION && |
764 | mvmvif->ap_sta_id == mvm_sta->sta_id) { | |
fe92e32a EG |
765 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
766 | if (ret) | |
767 | return ret; | |
80d85655 | 768 | /* flush its queues here since we are freeing mvm_sta */ |
5888a40c | 769 | ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); |
fe92e32a EG |
770 | if (ret) |
771 | return ret; | |
772 | ret = iwl_trans_wait_tx_queue_empty(mvm->trans, | |
773 | mvm_sta->tfd_queue_msk); | |
774 | if (ret) | |
775 | return ret; | |
776 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); | |
80d85655 | 777 | |
24afba76 LK |
778 | /* If DQA is supported - the queues can be disabled now */ |
779 | if (iwl_mvm_is_dqa_supported(mvm)) | |
780 | iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); | |
781 | ||
8ca151b5 JB |
782 | /* if we are associated - we can't remove the AP STA now */ |
783 | if (vif->bss_conf.assoc) | |
784 | return ret; | |
785 | ||
786 | /* unassoc - go ahead - remove the AP STA now */ | |
787 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
37577fe2 EP |
788 | |
789 | /* clear d0i3_ap_sta_id if no longer relevant */ | |
790 | if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) | |
791 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
8ca151b5 JB |
792 | } |
793 | ||
1d3c3f63 AN |
794 | /* |
795 | * This shouldn't happen - the TDLS channel switch should be canceled | |
796 | * before the STA is removed. | |
797 | */ | |
798 | if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { | |
799 | mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; | |
800 | cancel_delayed_work(&mvm->tdls_cs.dwork); | |
801 | } | |
802 | ||
e3d4bc8c EG |
803 | /* |
804 | * Make sure that the tx response code sees the station as -EBUSY and | |
805 | * calls the drain worker. | |
806 | */ | |
807 | spin_lock_bh(&mvm_sta->lock); | |
8ca151b5 JB |
808 | /* |
809 | * There are frames pending on the AC queues for this station. | |
810 | * We need to wait until all the frames are drained... | |
811 | */ | |
e3d4bc8c | 812 | if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { |
8ca151b5 JB |
813 | rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], |
814 | ERR_PTR(-EBUSY)); | |
e3d4bc8c | 815 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
816 | |
817 | /* disable TDLS sta queues on drain complete */ | |
818 | if (sta->tdls) { | |
819 | mvm->tfd_drained[mvm_sta->sta_id] = | |
820 | mvm_sta->tfd_queue_msk; | |
821 | IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", | |
822 | mvm_sta->sta_id); | |
823 | } | |
824 | ||
e3d4bc8c | 825 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
8ca151b5 | 826 | } else { |
e3d4bc8c | 827 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
828 | |
829 | if (sta->tdls) | |
830 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
831 | ||
8ca151b5 | 832 | ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); |
c531c771 | 833 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); |
8ca151b5 JB |
834 | } |
835 | ||
836 | return ret; | |
837 | } | |
838 | ||
839 | int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, | |
840 | struct ieee80211_vif *vif, | |
841 | u8 sta_id) | |
842 | { | |
843 | int ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
844 | ||
845 | lockdep_assert_held(&mvm->mutex); | |
846 | ||
c531c771 | 847 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 JB |
848 | return ret; |
849 | } | |
850 | ||
0e39eb03 CRI |
851 | int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, |
852 | struct iwl_mvm_int_sta *sta, | |
853 | u32 qmask, enum nl80211_iftype iftype) | |
8ca151b5 JB |
854 | { |
855 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
b92e661b | 856 | sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); |
8ca151b5 JB |
857 | if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) |
858 | return -ENOSPC; | |
859 | } | |
860 | ||
861 | sta->tfd_queue_msk = qmask; | |
862 | ||
863 | /* put a non-NULL value so iterating over the stations won't stop */ | |
864 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); | |
865 | return 0; | |
866 | } | |
867 | ||
712b24ad JB |
868 | static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, |
869 | struct iwl_mvm_int_sta *sta) | |
8ca151b5 | 870 | { |
c531c771 | 871 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); |
8ca151b5 JB |
872 | memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); |
873 | sta->sta_id = IWL_MVM_STATION_COUNT; | |
874 | } | |
875 | ||
876 | static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, | |
877 | struct iwl_mvm_int_sta *sta, | |
878 | const u8 *addr, | |
879 | u16 mac_id, u16 color) | |
880 | { | |
f9dc0004 | 881 | struct iwl_mvm_add_sta_cmd cmd; |
8ca151b5 JB |
882 | int ret; |
883 | u32 status; | |
884 | ||
885 | lockdep_assert_held(&mvm->mutex); | |
886 | ||
f9dc0004 | 887 | memset(&cmd, 0, sizeof(cmd)); |
8ca151b5 JB |
888 | cmd.sta_id = sta->sta_id; |
889 | cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, | |
890 | color)); | |
891 | ||
892 | cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); | |
cf0cda19 | 893 | cmd.tid_disable_tx = cpu_to_le16(0xffff); |
8ca151b5 JB |
894 | |
895 | if (addr) | |
896 | memcpy(cmd.addr, addr, ETH_ALEN); | |
897 | ||
854c5705 SS |
898 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
899 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 900 | &cmd, &status); |
8ca151b5 JB |
901 | if (ret) |
902 | return ret; | |
903 | ||
837c4da9 | 904 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
905 | case ADD_STA_SUCCESS: |
906 | IWL_DEBUG_INFO(mvm, "Internal station added.\n"); | |
907 | return 0; | |
908 | default: | |
909 | ret = -EIO; | |
910 | IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", | |
911 | status); | |
912 | break; | |
913 | } | |
914 | return ret; | |
915 | } | |
916 | ||
917 | int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) | |
918 | { | |
4cf677fd EG |
919 | unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? |
920 | mvm->cfg->base_params->wd_timeout : | |
921 | IWL_WATCHDOG_DISABLED; | |
8ca151b5 JB |
922 | int ret; |
923 | ||
924 | lockdep_assert_held(&mvm->mutex); | |
925 | ||
7da91b0e | 926 | /* Map Aux queue to fifo - needs to happen before adding Aux station */ |
4ecafae9 | 927 | iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, |
5c1156ef | 928 | IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); |
7da91b0e AM |
929 | |
930 | /* Allocate aux station and assign to it the aux queue */ | |
931 | ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), | |
b92e661b | 932 | NL80211_IFTYPE_UNSPECIFIED); |
8ca151b5 JB |
933 | if (ret) |
934 | return ret; | |
935 | ||
936 | ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, | |
937 | MAC_INDEX_AUX, 0); | |
938 | ||
939 | if (ret) | |
940 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
941 | return ret; | |
942 | } | |
943 | ||
0e39eb03 CRI |
944 | int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
945 | { | |
946 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
947 | ||
948 | lockdep_assert_held(&mvm->mutex); | |
949 | return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, | |
950 | mvmvif->id, 0); | |
951 | } | |
952 | ||
953 | int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
954 | { | |
955 | int ret; | |
956 | ||
957 | lockdep_assert_held(&mvm->mutex); | |
958 | ||
959 | ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); | |
960 | if (ret) | |
961 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
962 | ||
963 | return ret; | |
964 | } | |
965 | ||
966 | void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) | |
967 | { | |
968 | iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); | |
969 | } | |
970 | ||
712b24ad JB |
971 | void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) |
972 | { | |
973 | lockdep_assert_held(&mvm->mutex); | |
974 | ||
975 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
976 | } | |
977 | ||
8ca151b5 JB |
978 | /* |
979 | * Send the add station command for the vif's broadcast station. | |
980 | * Assumes that the station was already allocated. | |
981 | * | |
982 | * @mvm: the mvm component | |
983 | * @vif: the interface to which the broadcast station is added | |
984 | * @bsta: the broadcast station to add. | |
985 | */ | |
013290aa | 986 | int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
987 | { |
988 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 989 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
5023d966 | 990 | static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
a4243402 | 991 | const u8 *baddr = _baddr; |
8ca151b5 JB |
992 | |
993 | lockdep_assert_held(&mvm->mutex); | |
994 | ||
5023d966 JB |
995 | if (vif->type == NL80211_IFTYPE_ADHOC) |
996 | baddr = vif->bss_conf.bssid; | |
997 | ||
8ca151b5 JB |
998 | if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) |
999 | return -ENOSPC; | |
1000 | ||
1001 | return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, | |
1002 | mvmvif->id, mvmvif->color); | |
1003 | } | |
1004 | ||
1005 | /* Send the FW a request to remove the station from it's internal data | |
1006 | * structures, but DO NOT remove the entry from the local data structures. */ | |
013290aa | 1007 | int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 | 1008 | { |
013290aa | 1009 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1010 | int ret; |
1011 | ||
1012 | lockdep_assert_held(&mvm->mutex); | |
1013 | ||
013290aa | 1014 | ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); |
8ca151b5 JB |
1015 | if (ret) |
1016 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
1017 | return ret; | |
1018 | } | |
1019 | ||
013290aa JB |
1020 | int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
1021 | { | |
1022 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1023 | u32 qmask; | |
1024 | ||
1025 | lockdep_assert_held(&mvm->mutex); | |
1026 | ||
d92b732e | 1027 | qmask = iwl_mvm_mac_get_queues_mask(vif); |
013290aa JB |
1028 | |
1029 | /* | |
1030 | * The firmware defines the TFD queue mask to only be relevant | |
1031 | * for *unicast* queues, so the multicast (CAB) queue shouldn't | |
1032 | * be included. | |
1033 | */ | |
1034 | if (vif->type == NL80211_IFTYPE_AP) | |
1035 | qmask &= ~BIT(vif->cab_queue); | |
1036 | ||
1037 | return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, | |
1038 | ieee80211_vif_type_p2p(vif)); | |
1039 | } | |
1040 | ||
8ca151b5 JB |
1041 | /* Allocate a new station entry for the broadcast station to the given vif, |
1042 | * and send it to the FW. | |
1043 | * Note that each P2P mac should have its own broadcast station. | |
1044 | * | |
1045 | * @mvm: the mvm component | |
1046 | * @vif: the interface to which the broadcast station is added | |
1047 | * @bsta: the broadcast station to add. */ | |
013290aa | 1048 | int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
1049 | { |
1050 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 1051 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
8ca151b5 JB |
1052 | int ret; |
1053 | ||
1054 | lockdep_assert_held(&mvm->mutex); | |
1055 | ||
013290aa | 1056 | ret = iwl_mvm_alloc_bcast_sta(mvm, vif); |
8ca151b5 JB |
1057 | if (ret) |
1058 | return ret; | |
1059 | ||
013290aa | 1060 | ret = iwl_mvm_send_add_bcast_sta(mvm, vif); |
8ca151b5 JB |
1061 | |
1062 | if (ret) | |
1063 | iwl_mvm_dealloc_int_sta(mvm, bsta); | |
013290aa | 1064 | |
8ca151b5 JB |
1065 | return ret; |
1066 | } | |
1067 | ||
013290aa JB |
1068 | void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
1069 | { | |
1070 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1071 | ||
1072 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
1073 | } | |
1074 | ||
8ca151b5 JB |
1075 | /* |
1076 | * Send the FW a request to remove the station from it's internal data | |
1077 | * structures, and in addition remove it from the local data structure. | |
1078 | */ | |
013290aa | 1079 | int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
1080 | { |
1081 | int ret; | |
1082 | ||
1083 | lockdep_assert_held(&mvm->mutex); | |
1084 | ||
013290aa JB |
1085 | ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); |
1086 | ||
1087 | iwl_mvm_dealloc_bcast_sta(mvm, vif); | |
8ca151b5 | 1088 | |
8ca151b5 JB |
1089 | return ret; |
1090 | } | |
1091 | ||
113a0447 EG |
1092 | #define IWL_MAX_RX_BA_SESSIONS 16 |
1093 | ||
8ca151b5 | 1094 | int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
854c5705 | 1095 | int tid, u16 ssn, bool start, u8 buf_size) |
8ca151b5 | 1096 | { |
9d8ce6af | 1097 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1098 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
1099 | int ret; |
1100 | u32 status; | |
1101 | ||
1102 | lockdep_assert_held(&mvm->mutex); | |
1103 | ||
113a0447 EG |
1104 | if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { |
1105 | IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); | |
1106 | return -ENOSPC; | |
1107 | } | |
1108 | ||
8ca151b5 JB |
1109 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
1110 | cmd.sta_id = mvm_sta->sta_id; | |
1111 | cmd.add_modify = STA_MODE_MODIFY; | |
93a42667 EG |
1112 | if (start) { |
1113 | cmd.add_immediate_ba_tid = (u8) tid; | |
1114 | cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
854c5705 | 1115 | cmd.rx_ba_window = cpu_to_le16((u16)buf_size); |
93a42667 EG |
1116 | } else { |
1117 | cmd.remove_immediate_ba_tid = (u8) tid; | |
1118 | } | |
8ca151b5 JB |
1119 | cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : |
1120 | STA_MODIFY_REMOVE_BA_TID; | |
1121 | ||
1122 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
1123 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
1124 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 1125 | &cmd, &status); |
8ca151b5 JB |
1126 | if (ret) |
1127 | return ret; | |
1128 | ||
837c4da9 | 1129 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
1130 | case ADD_STA_SUCCESS: |
1131 | IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", | |
1132 | start ? "start" : "stopp"); | |
1133 | break; | |
1134 | case ADD_STA_IMMEDIATE_BA_FAILURE: | |
1135 | IWL_WARN(mvm, "RX BA Session refused by fw\n"); | |
1136 | ret = -ENOSPC; | |
1137 | break; | |
1138 | default: | |
1139 | ret = -EIO; | |
1140 | IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", | |
1141 | start ? "start" : "stopp", status); | |
1142 | break; | |
1143 | } | |
1144 | ||
113a0447 EG |
1145 | if (!ret) { |
1146 | if (start) | |
1147 | mvm->rx_ba_sessions++; | |
1148 | else if (mvm->rx_ba_sessions > 0) | |
1149 | /* check that restart flow didn't zero the counter */ | |
1150 | mvm->rx_ba_sessions--; | |
1151 | } | |
1152 | ||
8ca151b5 JB |
1153 | return ret; |
1154 | } | |
1155 | ||
1156 | static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
1157 | int tid, u8 queue, bool start) | |
1158 | { | |
9d8ce6af | 1159 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1160 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
1161 | int ret; |
1162 | u32 status; | |
1163 | ||
1164 | lockdep_assert_held(&mvm->mutex); | |
1165 | ||
1166 | if (start) { | |
1167 | mvm_sta->tfd_queue_msk |= BIT(queue); | |
1168 | mvm_sta->tid_disable_agg &= ~BIT(tid); | |
1169 | } else { | |
1170 | mvm_sta->tfd_queue_msk &= ~BIT(queue); | |
1171 | mvm_sta->tid_disable_agg |= BIT(tid); | |
1172 | } | |
1173 | ||
1174 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); | |
1175 | cmd.sta_id = mvm_sta->sta_id; | |
1176 | cmd.add_modify = STA_MODE_MODIFY; | |
1177 | cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; | |
1178 | cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
1179 | cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); | |
1180 | ||
1181 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
1182 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
1183 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 1184 | &cmd, &status); |
8ca151b5 JB |
1185 | if (ret) |
1186 | return ret; | |
1187 | ||
837c4da9 | 1188 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
1189 | case ADD_STA_SUCCESS: |
1190 | break; | |
1191 | default: | |
1192 | ret = -EIO; | |
1193 | IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", | |
1194 | start ? "start" : "stopp", status); | |
1195 | break; | |
1196 | } | |
1197 | ||
1198 | return ret; | |
1199 | } | |
1200 | ||
b797e3fb | 1201 | const u8 tid_to_mac80211_ac[] = { |
8ca151b5 JB |
1202 | IEEE80211_AC_BE, |
1203 | IEEE80211_AC_BK, | |
1204 | IEEE80211_AC_BK, | |
1205 | IEEE80211_AC_BE, | |
1206 | IEEE80211_AC_VI, | |
1207 | IEEE80211_AC_VI, | |
1208 | IEEE80211_AC_VO, | |
1209 | IEEE80211_AC_VO, | |
1210 | }; | |
1211 | ||
3e56eadf JB |
1212 | static const u8 tid_to_ucode_ac[] = { |
1213 | AC_BE, | |
1214 | AC_BK, | |
1215 | AC_BK, | |
1216 | AC_BE, | |
1217 | AC_VI, | |
1218 | AC_VI, | |
1219 | AC_VO, | |
1220 | AC_VO, | |
1221 | }; | |
1222 | ||
8ca151b5 JB |
1223 | int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1224 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) | |
1225 | { | |
5b577a90 | 1226 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1227 | struct iwl_mvm_tid_data *tid_data; |
1228 | int txq_id; | |
4ecafae9 | 1229 | int ret; |
8ca151b5 JB |
1230 | |
1231 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
1232 | return -EINVAL; | |
1233 | ||
1234 | if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { | |
1235 | IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", | |
1236 | mvmsta->tid_data[tid].state); | |
1237 | return -ENXIO; | |
1238 | } | |
1239 | ||
1240 | lockdep_assert_held(&mvm->mutex); | |
1241 | ||
b2492501 AN |
1242 | spin_lock_bh(&mvmsta->lock); |
1243 | ||
1244 | /* possible race condition - we entered D0i3 while starting agg */ | |
1245 | if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { | |
1246 | spin_unlock_bh(&mvmsta->lock); | |
1247 | IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); | |
1248 | return -EIO; | |
1249 | } | |
1250 | ||
4ecafae9 LK |
1251 | spin_lock_bh(&mvm->queue_info_lock); |
1252 | ||
1253 | txq_id = iwl_mvm_find_free_queue(mvm, mvm->first_agg_queue, | |
1254 | mvm->last_agg_queue); | |
1255 | if (txq_id < 0) { | |
1256 | ret = txq_id; | |
1257 | spin_unlock_bh(&mvm->queue_info_lock); | |
1258 | IWL_ERR(mvm, "Failed to allocate agg queue\n"); | |
1259 | goto release_locks; | |
1260 | } | |
1261 | mvm->queue_info[txq_id].setup_reserved = true; | |
1262 | spin_unlock_bh(&mvm->queue_info_lock); | |
8ca151b5 | 1263 | |
8ca151b5 | 1264 | tid_data = &mvmsta->tid_data[tid]; |
9a886586 | 1265 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1266 | tid_data->txq_id = txq_id; |
1267 | *ssn = tid_data->ssn; | |
1268 | ||
1269 | IWL_DEBUG_TX_QUEUES(mvm, | |
1270 | "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", | |
1271 | mvmsta->sta_id, tid, txq_id, tid_data->ssn, | |
1272 | tid_data->next_reclaimed); | |
1273 | ||
1274 | if (tid_data->ssn == tid_data->next_reclaimed) { | |
1275 | tid_data->state = IWL_AGG_STARTING; | |
1276 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1277 | } else { | |
1278 | tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
1279 | } | |
1280 | ||
4ecafae9 LK |
1281 | ret = 0; |
1282 | ||
1283 | release_locks: | |
8ca151b5 JB |
1284 | spin_unlock_bh(&mvmsta->lock); |
1285 | ||
4ecafae9 | 1286 | return ret; |
8ca151b5 JB |
1287 | } |
1288 | ||
1289 | int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
bb81bb68 EG |
1290 | struct ieee80211_sta *sta, u16 tid, u8 buf_size, |
1291 | bool amsdu) | |
8ca151b5 | 1292 | { |
5b577a90 | 1293 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 1294 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
5d42e7b2 EG |
1295 | unsigned int wdg_timeout = |
1296 | iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); | |
eea76c36 | 1297 | int queue, ret; |
8ca151b5 JB |
1298 | u16 ssn; |
1299 | ||
eea76c36 EG |
1300 | struct iwl_trans_txq_scd_cfg cfg = { |
1301 | .sta_id = mvmsta->sta_id, | |
1302 | .tid = tid, | |
1303 | .frame_limit = buf_size, | |
1304 | .aggregate = true, | |
1305 | }; | |
1306 | ||
efed6640 ES |
1307 | BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) |
1308 | != IWL_MAX_TID_COUNT); | |
1309 | ||
8ca151b5 JB |
1310 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); |
1311 | ||
1312 | spin_lock_bh(&mvmsta->lock); | |
1313 | ssn = tid_data->ssn; | |
1314 | queue = tid_data->txq_id; | |
1315 | tid_data->state = IWL_AGG_ON; | |
efed6640 | 1316 | mvmsta->agg_tids |= BIT(tid); |
8ca151b5 | 1317 | tid_data->ssn = 0xffff; |
bb81bb68 | 1318 | tid_data->amsdu_in_ampdu_allowed = amsdu; |
8ca151b5 JB |
1319 | spin_unlock_bh(&mvmsta->lock); |
1320 | ||
eea76c36 | 1321 | cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; |
8ca151b5 | 1322 | |
eea76c36 EG |
1323 | iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[tid_to_mac80211_ac[tid]], |
1324 | ssn, &cfg, wdg_timeout); | |
fa7878e7 | 1325 | |
8ca151b5 JB |
1326 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); |
1327 | if (ret) | |
1328 | return -EIO; | |
1329 | ||
4ecafae9 LK |
1330 | /* No need to mark as reserved */ |
1331 | spin_lock_bh(&mvm->queue_info_lock); | |
1332 | mvm->queue_info[queue].setup_reserved = false; | |
1333 | spin_unlock_bh(&mvm->queue_info_lock); | |
1334 | ||
8ca151b5 JB |
1335 | /* |
1336 | * Even though in theory the peer could have different | |
1337 | * aggregation reorder buffer sizes for different sessions, | |
1338 | * our ucode doesn't allow for that and has a global limit | |
1339 | * for each station. Therefore, use the minimum of all the | |
1340 | * aggregation sessions and our default value. | |
1341 | */ | |
1342 | mvmsta->max_agg_bufsize = | |
1343 | min(mvmsta->max_agg_bufsize, buf_size); | |
1344 | mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; | |
1345 | ||
9ee718aa EL |
1346 | IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", |
1347 | sta->addr, tid); | |
1348 | ||
9e680946 | 1349 | return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); |
8ca151b5 JB |
1350 | } |
1351 | ||
1352 | int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1353 | struct ieee80211_sta *sta, u16 tid) | |
1354 | { | |
5b577a90 | 1355 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1356 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1357 | u16 txq_id; | |
1358 | int err; | |
1359 | ||
f9aa8dd3 EG |
1360 | |
1361 | /* | |
1362 | * If mac80211 is cleaning its state, then say that we finished since | |
1363 | * our state has been cleared anyway. | |
1364 | */ | |
1365 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
1366 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1367 | return 0; | |
1368 | } | |
1369 | ||
8ca151b5 JB |
1370 | spin_lock_bh(&mvmsta->lock); |
1371 | ||
1372 | txq_id = tid_data->txq_id; | |
1373 | ||
1374 | IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", | |
1375 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
1376 | ||
efed6640 ES |
1377 | mvmsta->agg_tids &= ~BIT(tid); |
1378 | ||
4ecafae9 LK |
1379 | /* No need to mark as reserved anymore */ |
1380 | spin_lock_bh(&mvm->queue_info_lock); | |
1381 | mvm->queue_info[txq_id].setup_reserved = false; | |
1382 | spin_unlock_bh(&mvm->queue_info_lock); | |
1383 | ||
8ca151b5 JB |
1384 | switch (tid_data->state) { |
1385 | case IWL_AGG_ON: | |
9a886586 | 1386 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1387 | |
1388 | IWL_DEBUG_TX_QUEUES(mvm, | |
1389 | "ssn = %d, next_recl = %d\n", | |
1390 | tid_data->ssn, tid_data->next_reclaimed); | |
1391 | ||
1392 | /* There are still packets for this RA / TID in the HW */ | |
1393 | if (tid_data->ssn != tid_data->next_reclaimed) { | |
1394 | tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; | |
1395 | err = 0; | |
1396 | break; | |
1397 | } | |
1398 | ||
1399 | tid_data->ssn = 0xffff; | |
f7f89e7b | 1400 | tid_data->state = IWL_AGG_OFF; |
f7f89e7b JB |
1401 | spin_unlock_bh(&mvmsta->lock); |
1402 | ||
1403 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1404 | ||
1405 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); | |
1406 | ||
4ecafae9 LK |
1407 | iwl_mvm_disable_txq(mvm, txq_id, |
1408 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1409 | 0); | |
f7f89e7b | 1410 | return 0; |
8ca151b5 JB |
1411 | case IWL_AGG_STARTING: |
1412 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
1413 | /* | |
1414 | * The agg session has been stopped before it was set up. This | |
1415 | * can happen when the AddBA timer times out for example. | |
1416 | */ | |
1417 | ||
1418 | /* No barriers since we are under mutex */ | |
1419 | lockdep_assert_held(&mvm->mutex); | |
8ca151b5 JB |
1420 | |
1421 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1422 | tid_data->state = IWL_AGG_OFF; | |
1423 | err = 0; | |
1424 | break; | |
1425 | default: | |
1426 | IWL_ERR(mvm, | |
1427 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
1428 | mvmsta->sta_id, tid, tid_data->state); | |
1429 | IWL_ERR(mvm, | |
1430 | "\ttid_data->txq_id = %d\n", tid_data->txq_id); | |
1431 | err = -EINVAL; | |
1432 | } | |
1433 | ||
1434 | spin_unlock_bh(&mvmsta->lock); | |
1435 | ||
1436 | return err; | |
1437 | } | |
1438 | ||
e3d9e7ce EG |
1439 | int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1440 | struct ieee80211_sta *sta, u16 tid) | |
1441 | { | |
5b577a90 | 1442 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
e3d9e7ce EG |
1443 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1444 | u16 txq_id; | |
b6658ff8 | 1445 | enum iwl_mvm_agg_state old_state; |
e3d9e7ce EG |
1446 | |
1447 | /* | |
1448 | * First set the agg state to OFF to avoid calling | |
1449 | * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. | |
1450 | */ | |
1451 | spin_lock_bh(&mvmsta->lock); | |
1452 | txq_id = tid_data->txq_id; | |
1453 | IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", | |
1454 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
b6658ff8 | 1455 | old_state = tid_data->state; |
e3d9e7ce | 1456 | tid_data->state = IWL_AGG_OFF; |
efed6640 | 1457 | mvmsta->agg_tids &= ~BIT(tid); |
e3d9e7ce EG |
1458 | spin_unlock_bh(&mvmsta->lock); |
1459 | ||
4ecafae9 LK |
1460 | /* No need to mark as reserved */ |
1461 | spin_lock_bh(&mvm->queue_info_lock); | |
1462 | mvm->queue_info[txq_id].setup_reserved = false; | |
1463 | spin_unlock_bh(&mvm->queue_info_lock); | |
1464 | ||
b6658ff8 | 1465 | if (old_state >= IWL_AGG_ON) { |
fe92e32a | 1466 | iwl_mvm_drain_sta(mvm, mvmsta, true); |
5888a40c | 1467 | if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) |
b6658ff8 | 1468 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); |
fe92e32a EG |
1469 | iwl_trans_wait_tx_queue_empty(mvm->trans, |
1470 | mvmsta->tfd_queue_msk); | |
1471 | iwl_mvm_drain_sta(mvm, mvmsta, false); | |
b6658ff8 | 1472 | |
f7f89e7b JB |
1473 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); |
1474 | ||
4ecafae9 LK |
1475 | iwl_mvm_disable_txq(mvm, tid_data->txq_id, |
1476 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1477 | 0); | |
b6658ff8 | 1478 | } |
e3d9e7ce | 1479 | |
e3d9e7ce EG |
1480 | return 0; |
1481 | } | |
1482 | ||
8ca151b5 JB |
1483 | static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) |
1484 | { | |
2dc2a15e | 1485 | int i, max = -1, max_offs = -1; |
8ca151b5 JB |
1486 | |
1487 | lockdep_assert_held(&mvm->mutex); | |
1488 | ||
2dc2a15e JB |
1489 | /* Pick the unused key offset with the highest 'deleted' |
1490 | * counter. Every time a key is deleted, all the counters | |
1491 | * are incremented and the one that was just deleted is | |
1492 | * reset to zero. Thus, the highest counter is the one | |
1493 | * that was deleted longest ago. Pick that one. | |
1494 | */ | |
1495 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1496 | if (test_bit(i, mvm->fw_key_table)) | |
1497 | continue; | |
1498 | if (mvm->fw_key_deleted[i] > max) { | |
1499 | max = mvm->fw_key_deleted[i]; | |
1500 | max_offs = i; | |
1501 | } | |
1502 | } | |
8ca151b5 | 1503 | |
2dc2a15e | 1504 | if (max_offs < 0) |
8ca151b5 JB |
1505 | return STA_KEY_IDX_INVALID; |
1506 | ||
2dc2a15e | 1507 | return max_offs; |
8ca151b5 JB |
1508 | } |
1509 | ||
5f7a1847 JB |
1510 | static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, |
1511 | struct ieee80211_vif *vif, | |
1512 | struct ieee80211_sta *sta) | |
8ca151b5 | 1513 | { |
5b530e95 | 1514 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 | 1515 | |
5f7a1847 JB |
1516 | if (sta) |
1517 | return iwl_mvm_sta_from_mac80211(sta); | |
8ca151b5 JB |
1518 | |
1519 | /* | |
1520 | * The device expects GTKs for station interfaces to be | |
1521 | * installed as GTKs for the AP station. If we have no | |
1522 | * station ID, then use AP's station ID. | |
1523 | */ | |
1524 | if (vif->type == NL80211_IFTYPE_STATION && | |
9513c5e1 AA |
1525 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { |
1526 | u8 sta_id = mvmvif->ap_sta_id; | |
1527 | ||
45854360 JB |
1528 | sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], |
1529 | lockdep_is_held(&mvm->mutex)); | |
9513c5e1 AA |
1530 | /* |
1531 | * It is possible that the 'sta' parameter is NULL, | |
1532 | * for example when a GTK is removed - the sta_id will then | |
1533 | * be the AP ID, and no station was passed by mac80211. | |
1534 | */ | |
1535 | if (IS_ERR_OR_NULL(sta)) | |
5f7a1847 | 1536 | return NULL; |
9513c5e1 | 1537 | |
5f7a1847 | 1538 | return iwl_mvm_sta_from_mac80211(sta); |
9513c5e1 | 1539 | } |
8ca151b5 | 1540 | |
5f7a1847 | 1541 | return NULL; |
8ca151b5 JB |
1542 | } |
1543 | ||
1544 | static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, | |
1545 | struct iwl_mvm_sta *mvm_sta, | |
ba3943b0 | 1546 | struct ieee80211_key_conf *keyconf, bool mcast, |
d6ee54a9 LC |
1547 | u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, |
1548 | u8 key_offset) | |
8ca151b5 | 1549 | { |
5a258aae | 1550 | struct iwl_mvm_add_sta_key_cmd cmd = {}; |
f9dc0004 | 1551 | __le16 key_flags; |
79920749 JB |
1552 | int ret; |
1553 | u32 status; | |
8ca151b5 JB |
1554 | u16 keyidx; |
1555 | int i; | |
2f6319d1 | 1556 | u8 sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1557 | |
1558 | keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1559 | STA_KEY_FLG_KEYID_MSK; | |
1560 | key_flags = cpu_to_le16(keyidx); | |
1561 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); | |
1562 | ||
1563 | switch (keyconf->cipher) { | |
1564 | case WLAN_CIPHER_SUITE_TKIP: | |
1565 | key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); | |
5a258aae | 1566 | cmd.tkip_rx_tsc_byte2 = tkip_iv32; |
8ca151b5 | 1567 | for (i = 0; i < 5; i++) |
5a258aae MS |
1568 | cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); |
1569 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1570 | break; |
1571 | case WLAN_CIPHER_SUITE_CCMP: | |
1572 | key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); | |
5a258aae | 1573 | memcpy(cmd.key, keyconf->key, keyconf->keylen); |
8ca151b5 | 1574 | break; |
ba3943b0 JB |
1575 | case WLAN_CIPHER_SUITE_WEP104: |
1576 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); | |
aa0cb08b | 1577 | /* fall through */ |
ba3943b0 JB |
1578 | case WLAN_CIPHER_SUITE_WEP40: |
1579 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); | |
1580 | memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); | |
1581 | break; | |
8ca151b5 | 1582 | default: |
e36e5433 MS |
1583 | key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); |
1584 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1585 | } |
1586 | ||
ba3943b0 | 1587 | if (mcast) |
8ca151b5 JB |
1588 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1589 | ||
d6ee54a9 | 1590 | cmd.key_offset = key_offset; |
5a258aae | 1591 | cmd.key_flags = key_flags; |
8ca151b5 JB |
1592 | cmd.sta_id = sta_id; |
1593 | ||
1594 | status = ADD_STA_SUCCESS; | |
a1022927 | 1595 | if (cmd_flags & CMD_ASYNC) |
f9dc0004 EG |
1596 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, |
1597 | sizeof(cmd), &cmd); | |
a1022927 EG |
1598 | else |
1599 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1600 | &cmd, &status); | |
8ca151b5 JB |
1601 | |
1602 | switch (status) { | |
1603 | case ADD_STA_SUCCESS: | |
1604 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); | |
1605 | break; | |
1606 | default: | |
1607 | ret = -EIO; | |
1608 | IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); | |
1609 | break; | |
1610 | } | |
1611 | ||
1612 | return ret; | |
1613 | } | |
1614 | ||
1615 | static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, | |
1616 | struct ieee80211_key_conf *keyconf, | |
1617 | u8 sta_id, bool remove_key) | |
1618 | { | |
1619 | struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; | |
1620 | ||
1621 | /* verify the key details match the required command's expectations */ | |
1622 | if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || | |
1623 | (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || | |
1624 | (keyconf->keyidx != 4 && keyconf->keyidx != 5))) | |
1625 | return -EINVAL; | |
1626 | ||
1627 | igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); | |
1628 | igtk_cmd.sta_id = cpu_to_le32(sta_id); | |
1629 | ||
1630 | if (remove_key) { | |
1631 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); | |
1632 | } else { | |
1633 | struct ieee80211_key_seq seq; | |
1634 | const u8 *pn; | |
1635 | ||
1636 | memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1637 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); |
1638 | pn = seq.aes_cmac.pn; | |
1639 | igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | | |
1640 | ((u64) pn[4] << 8) | | |
1641 | ((u64) pn[3] << 16) | | |
1642 | ((u64) pn[2] << 24) | | |
1643 | ((u64) pn[1] << 32) | | |
1644 | ((u64) pn[0] << 40)); | |
1645 | } | |
1646 | ||
1647 | IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", | |
1648 | remove_key ? "removing" : "installing", | |
1649 | igtk_cmd.sta_id); | |
1650 | ||
a1022927 | 1651 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
8ca151b5 JB |
1652 | sizeof(igtk_cmd), &igtk_cmd); |
1653 | } | |
1654 | ||
1655 | ||
1656 | static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, | |
1657 | struct ieee80211_vif *vif, | |
1658 | struct ieee80211_sta *sta) | |
1659 | { | |
5b530e95 | 1660 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1661 | |
1662 | if (sta) | |
1663 | return sta->addr; | |
1664 | ||
1665 | if (vif->type == NL80211_IFTYPE_STATION && | |
1666 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { | |
1667 | u8 sta_id = mvmvif->ap_sta_id; | |
1668 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1669 | lockdep_is_held(&mvm->mutex)); | |
1670 | return sta->addr; | |
1671 | } | |
1672 | ||
1673 | ||
1674 | return NULL; | |
1675 | } | |
1676 | ||
2f6319d1 JB |
1677 | static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1678 | struct ieee80211_vif *vif, | |
1679 | struct ieee80211_sta *sta, | |
ba3943b0 | 1680 | struct ieee80211_key_conf *keyconf, |
d6ee54a9 | 1681 | u8 key_offset, |
ba3943b0 | 1682 | bool mcast) |
2f6319d1 JB |
1683 | { |
1684 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1685 | int ret; | |
1686 | const u8 *addr; | |
1687 | struct ieee80211_key_seq seq; | |
1688 | u16 p1k[5]; | |
1689 | ||
1690 | switch (keyconf->cipher) { | |
1691 | case WLAN_CIPHER_SUITE_TKIP: | |
1692 | addr = iwl_mvm_get_mac_addr(mvm, vif, sta); | |
1693 | /* get phase 1 key from mac80211 */ | |
1694 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1695 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
ba3943b0 | 1696 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1697 | seq.tkip.iv32, p1k, 0, key_offset); |
2f6319d1 JB |
1698 | break; |
1699 | case WLAN_CIPHER_SUITE_CCMP: | |
ba3943b0 JB |
1700 | case WLAN_CIPHER_SUITE_WEP40: |
1701 | case WLAN_CIPHER_SUITE_WEP104: | |
1702 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, | |
d6ee54a9 | 1703 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
1704 | break; |
1705 | default: | |
ba3943b0 | 1706 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1707 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
1708 | } |
1709 | ||
1710 | return ret; | |
1711 | } | |
1712 | ||
1713 | static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, | |
ba3943b0 JB |
1714 | struct ieee80211_key_conf *keyconf, |
1715 | bool mcast) | |
2f6319d1 JB |
1716 | { |
1717 | struct iwl_mvm_add_sta_key_cmd cmd = {}; | |
1718 | __le16 key_flags; | |
1719 | int ret; | |
1720 | u32 status; | |
1721 | ||
1722 | key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1723 | STA_KEY_FLG_KEYID_MSK); | |
1724 | key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); | |
1725 | key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); | |
1726 | ||
ba3943b0 | 1727 | if (mcast) |
2f6319d1 JB |
1728 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1729 | ||
1730 | cmd.key_flags = key_flags; | |
1731 | cmd.key_offset = keyconf->hw_key_idx; | |
1732 | cmd.sta_id = sta_id; | |
1733 | ||
1734 | status = ADD_STA_SUCCESS; | |
1735 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1736 | &cmd, &status); | |
1737 | ||
1738 | switch (status) { | |
1739 | case ADD_STA_SUCCESS: | |
1740 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); | |
1741 | break; | |
1742 | default: | |
1743 | ret = -EIO; | |
1744 | IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); | |
1745 | break; | |
1746 | } | |
1747 | ||
1748 | return ret; | |
1749 | } | |
1750 | ||
8ca151b5 JB |
1751 | int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1752 | struct ieee80211_vif *vif, | |
1753 | struct ieee80211_sta *sta, | |
1754 | struct ieee80211_key_conf *keyconf, | |
d6ee54a9 | 1755 | u8 key_offset) |
8ca151b5 | 1756 | { |
ba3943b0 | 1757 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 | 1758 | struct iwl_mvm_sta *mvm_sta; |
2f6319d1 | 1759 | u8 sta_id; |
8ca151b5 | 1760 | int ret; |
11828dbc | 1761 | static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; |
8ca151b5 JB |
1762 | |
1763 | lockdep_assert_held(&mvm->mutex); | |
1764 | ||
1765 | /* Get the station id from the mvm local station table */ | |
5f7a1847 JB |
1766 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
1767 | if (!mvm_sta) { | |
1768 | IWL_ERR(mvm, "Failed to find station\n"); | |
8ca151b5 JB |
1769 | return -EINVAL; |
1770 | } | |
5f7a1847 | 1771 | sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1772 | |
1773 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { | |
1774 | ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); | |
1775 | goto end; | |
1776 | } | |
1777 | ||
1778 | /* | |
1779 | * It is possible that the 'sta' parameter is NULL, and thus | |
1780 | * there is a need to retrieve the sta from the local station table. | |
1781 | */ | |
1782 | if (!sta) { | |
1783 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1784 | lockdep_is_held(&mvm->mutex)); | |
1785 | if (IS_ERR_OR_NULL(sta)) { | |
1786 | IWL_ERR(mvm, "Invalid station id\n"); | |
1787 | return -EINVAL; | |
1788 | } | |
1789 | } | |
1790 | ||
2f6319d1 | 1791 | if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
8ca151b5 JB |
1792 | return -EINVAL; |
1793 | ||
d6ee54a9 LC |
1794 | /* If the key_offset is not pre-assigned, we need to find a |
1795 | * new offset to use. In normal cases, the offset is not | |
1796 | * pre-assigned, but during HW_RESTART we want to reuse the | |
1797 | * same indices, so we pass them when this function is called. | |
1798 | * | |
1799 | * In D3 entry, we need to hardcoded the indices (because the | |
1800 | * firmware hardcodes the PTK offset to 0). In this case, we | |
1801 | * need to make sure we don't overwrite the hw_key_idx in the | |
1802 | * keyconf structure, because otherwise we cannot configure | |
1803 | * the original ones back when resuming. | |
1804 | */ | |
1805 | if (key_offset == STA_KEY_IDX_INVALID) { | |
1806 | key_offset = iwl_mvm_set_fw_key_idx(mvm); | |
1807 | if (key_offset == STA_KEY_IDX_INVALID) | |
8ca151b5 | 1808 | return -ENOSPC; |
d6ee54a9 | 1809 | keyconf->hw_key_idx = key_offset; |
8ca151b5 JB |
1810 | } |
1811 | ||
d6ee54a9 | 1812 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); |
9c3deeb5 | 1813 | if (ret) |
ba3943b0 | 1814 | goto end; |
ba3943b0 JB |
1815 | |
1816 | /* | |
1817 | * For WEP, the same key is used for multicast and unicast. Upload it | |
1818 | * again, using the same key offset, and now pointing the other one | |
1819 | * to the same key slot (offset). | |
1820 | * If this fails, remove the original as well. | |
1821 | */ | |
1822 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1823 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { | |
d6ee54a9 LC |
1824 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, |
1825 | key_offset, !mcast); | |
ba3943b0 | 1826 | if (ret) { |
ba3943b0 | 1827 | __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
9c3deeb5 | 1828 | goto end; |
ba3943b0 JB |
1829 | } |
1830 | } | |
8ca151b5 | 1831 | |
9c3deeb5 LC |
1832 | __set_bit(key_offset, mvm->fw_key_table); |
1833 | ||
8ca151b5 JB |
1834 | end: |
1835 | IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
1836 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, | |
11828dbc | 1837 | sta ? sta->addr : zero_addr, ret); |
8ca151b5 JB |
1838 | return ret; |
1839 | } | |
1840 | ||
1841 | int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, | |
1842 | struct ieee80211_vif *vif, | |
1843 | struct ieee80211_sta *sta, | |
1844 | struct ieee80211_key_conf *keyconf) | |
1845 | { | |
ba3943b0 | 1846 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 JB |
1847 | struct iwl_mvm_sta *mvm_sta; |
1848 | u8 sta_id = IWL_MVM_STATION_COUNT; | |
2dc2a15e | 1849 | int ret, i; |
8ca151b5 JB |
1850 | |
1851 | lockdep_assert_held(&mvm->mutex); | |
1852 | ||
5f7a1847 JB |
1853 | /* Get the station from the mvm local station table */ |
1854 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); | |
8ca151b5 JB |
1855 | |
1856 | IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", | |
1857 | keyconf->keyidx, sta_id); | |
1858 | ||
1859 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) | |
1860 | return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); | |
1861 | ||
2f6319d1 | 1862 | if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { |
8ca151b5 JB |
1863 | IWL_ERR(mvm, "offset %d not used in fw key table.\n", |
1864 | keyconf->hw_key_idx); | |
1865 | return -ENOENT; | |
1866 | } | |
1867 | ||
2dc2a15e JB |
1868 | /* track which key was deleted last */ |
1869 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1870 | if (mvm->fw_key_deleted[i] < U8_MAX) | |
1871 | mvm->fw_key_deleted[i]++; | |
1872 | } | |
1873 | mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; | |
1874 | ||
5f7a1847 | 1875 | if (!mvm_sta) { |
8ca151b5 JB |
1876 | IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); |
1877 | return 0; | |
1878 | } | |
1879 | ||
5f7a1847 JB |
1880 | sta_id = mvm_sta->sta_id; |
1881 | ||
ba3943b0 JB |
1882 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
1883 | if (ret) | |
1884 | return ret; | |
1885 | ||
1886 | /* delete WEP key twice to get rid of (now useless) offset */ | |
1887 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1888 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) | |
1889 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); | |
1890 | ||
1891 | return ret; | |
8ca151b5 JB |
1892 | } |
1893 | ||
1894 | void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, | |
1895 | struct ieee80211_vif *vif, | |
1896 | struct ieee80211_key_conf *keyconf, | |
1897 | struct ieee80211_sta *sta, u32 iv32, | |
1898 | u16 *phase1key) | |
1899 | { | |
c3eb536a | 1900 | struct iwl_mvm_sta *mvm_sta; |
ba3943b0 | 1901 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 1902 | |
c3eb536a BL |
1903 | rcu_read_lock(); |
1904 | ||
5f7a1847 JB |
1905 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
1906 | if (WARN_ON_ONCE(!mvm_sta)) | |
45854360 | 1907 | goto unlock; |
ba3943b0 | 1908 | iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1909 | iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); |
45854360 JB |
1910 | |
1911 | unlock: | |
c3eb536a | 1912 | rcu_read_unlock(); |
8ca151b5 JB |
1913 | } |
1914 | ||
9cc40712 JB |
1915 | void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, |
1916 | struct ieee80211_sta *sta) | |
8ca151b5 | 1917 | { |
5b577a90 | 1918 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1919 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1920 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1921 | .sta_id = mvmsta->sta_id, |
5af01772 | 1922 | .station_flags_msk = cpu_to_le32(STA_FLG_PS), |
9cc40712 | 1923 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 JB |
1924 | }; |
1925 | int ret; | |
1926 | ||
854c5705 SS |
1927 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
1928 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
8ca151b5 JB |
1929 | if (ret) |
1930 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1931 | } | |
1932 | ||
9cc40712 JB |
1933 | void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, |
1934 | struct ieee80211_sta *sta, | |
8ca151b5 | 1935 | enum ieee80211_frame_release_type reason, |
3e56eadf JB |
1936 | u16 cnt, u16 tids, bool more_data, |
1937 | bool agg) | |
8ca151b5 | 1938 | { |
5b577a90 | 1939 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1940 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1941 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1942 | .sta_id = mvmsta->sta_id, |
8ca151b5 JB |
1943 | .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, |
1944 | .sleep_tx_count = cpu_to_le16(cnt), | |
9cc40712 | 1945 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 | 1946 | }; |
3e56eadf JB |
1947 | int tid, ret; |
1948 | unsigned long _tids = tids; | |
1949 | ||
1950 | /* convert TIDs to ACs - we don't support TSPEC so that's OK | |
1951 | * Note that this field is reserved and unused by firmware not | |
1952 | * supporting GO uAPSD, so it's safe to always do this. | |
1953 | */ | |
1954 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) | |
1955 | cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); | |
1956 | ||
1957 | /* If we're releasing frames from aggregation queues then check if the | |
1958 | * all queues combined that we're releasing frames from have | |
1959 | * - more frames than the service period, in which case more_data | |
1960 | * needs to be set | |
1961 | * - fewer than 'cnt' frames, in which case we need to adjust the | |
1962 | * firmware command (but do that unconditionally) | |
1963 | */ | |
1964 | if (agg) { | |
1965 | int remaining = cnt; | |
36be0eb6 | 1966 | int sleep_tx_count; |
3e56eadf JB |
1967 | |
1968 | spin_lock_bh(&mvmsta->lock); | |
1969 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { | |
1970 | struct iwl_mvm_tid_data *tid_data; | |
1971 | u16 n_queued; | |
1972 | ||
1973 | tid_data = &mvmsta->tid_data[tid]; | |
1974 | if (WARN(tid_data->state != IWL_AGG_ON && | |
1975 | tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, | |
1976 | "TID %d state is %d\n", | |
1977 | tid, tid_data->state)) { | |
1978 | spin_unlock_bh(&mvmsta->lock); | |
1979 | ieee80211_sta_eosp(sta); | |
1980 | return; | |
1981 | } | |
1982 | ||
1983 | n_queued = iwl_mvm_tid_queued(tid_data); | |
1984 | if (n_queued > remaining) { | |
1985 | more_data = true; | |
1986 | remaining = 0; | |
1987 | break; | |
1988 | } | |
1989 | remaining -= n_queued; | |
1990 | } | |
36be0eb6 EG |
1991 | sleep_tx_count = cnt - remaining; |
1992 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) | |
1993 | mvmsta->sleep_tx_count = sleep_tx_count; | |
3e56eadf JB |
1994 | spin_unlock_bh(&mvmsta->lock); |
1995 | ||
36be0eb6 | 1996 | cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); |
3e56eadf JB |
1997 | if (WARN_ON(cnt - remaining == 0)) { |
1998 | ieee80211_sta_eosp(sta); | |
1999 | return; | |
2000 | } | |
2001 | } | |
2002 | ||
2003 | /* Note: this is ignored by firmware not supporting GO uAPSD */ | |
2004 | if (more_data) | |
2005 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); | |
2006 | ||
2007 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { | |
2008 | mvmsta->next_status_eosp = true; | |
2009 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); | |
2010 | } else { | |
2011 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); | |
2012 | } | |
8ca151b5 | 2013 | |
156f92f2 EG |
2014 | /* block the Tx queues until the FW updated the sleep Tx count */ |
2015 | iwl_trans_block_txq_ptrs(mvm->trans, true); | |
2016 | ||
2017 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, | |
2018 | CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, | |
854c5705 | 2019 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); |
8ca151b5 JB |
2020 | if (ret) |
2021 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
2022 | } | |
3e56eadf | 2023 | |
0416841d JB |
2024 | void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, |
2025 | struct iwl_rx_cmd_buffer *rxb) | |
3e56eadf JB |
2026 | { |
2027 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
2028 | struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; | |
2029 | struct ieee80211_sta *sta; | |
2030 | u32 sta_id = le32_to_cpu(notif->sta_id); | |
2031 | ||
2032 | if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) | |
0416841d | 2033 | return; |
3e56eadf JB |
2034 | |
2035 | rcu_read_lock(); | |
2036 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
2037 | if (!IS_ERR_OR_NULL(sta)) | |
2038 | ieee80211_sta_eosp(sta); | |
2039 | rcu_read_unlock(); | |
3e56eadf | 2040 | } |
09b0ce1a AO |
2041 | |
2042 | void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, | |
2043 | struct iwl_mvm_sta *mvmsta, bool disable) | |
2044 | { | |
2045 | struct iwl_mvm_add_sta_cmd cmd = { | |
2046 | .add_modify = STA_MODE_MODIFY, | |
2047 | .sta_id = mvmsta->sta_id, | |
2048 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
2049 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
2050 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), | |
2051 | }; | |
2052 | int ret; | |
2053 | ||
854c5705 SS |
2054 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
2055 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
09b0ce1a AO |
2056 | if (ret) |
2057 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
2058 | } | |
003e5236 AO |
2059 | |
2060 | void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, | |
2061 | struct ieee80211_sta *sta, | |
2062 | bool disable) | |
2063 | { | |
2064 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
2065 | ||
2066 | spin_lock_bh(&mvm_sta->lock); | |
2067 | ||
2068 | if (mvm_sta->disable_tx == disable) { | |
2069 | spin_unlock_bh(&mvm_sta->lock); | |
2070 | return; | |
2071 | } | |
2072 | ||
2073 | mvm_sta->disable_tx = disable; | |
2074 | ||
2075 | /* | |
0d365ae5 SS |
2076 | * Tell mac80211 to start/stop queuing tx for this station, |
2077 | * but don't stop queuing if there are still pending frames | |
003e5236 AO |
2078 | * for this station. |
2079 | */ | |
2080 | if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) | |
2081 | ieee80211_sta_block_awake(mvm->hw, sta, disable); | |
2082 | ||
2083 | iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); | |
2084 | ||
2085 | spin_unlock_bh(&mvm_sta->lock); | |
2086 | } | |
2087 | ||
2088 | void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, | |
2089 | struct iwl_mvm_vif *mvmvif, | |
2090 | bool disable) | |
2091 | { | |
2092 | struct ieee80211_sta *sta; | |
2093 | struct iwl_mvm_sta *mvm_sta; | |
2094 | int i; | |
2095 | ||
2096 | lockdep_assert_held(&mvm->mutex); | |
2097 | ||
2098 | /* Block/unblock all the stations of the given mvmvif */ | |
2099 | for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { | |
2100 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], | |
2101 | lockdep_is_held(&mvm->mutex)); | |
2102 | if (IS_ERR_OR_NULL(sta)) | |
2103 | continue; | |
2104 | ||
2105 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
2106 | if (mvm_sta->mac_id_n_color != | |
2107 | FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) | |
2108 | continue; | |
2109 | ||
2110 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); | |
2111 | } | |
2112 | } | |
dc88b4ba LC |
2113 | |
2114 | void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
2115 | { | |
2116 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
2117 | struct iwl_mvm_sta *mvmsta; | |
2118 | ||
2119 | rcu_read_lock(); | |
2120 | ||
2121 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); | |
2122 | ||
2123 | if (!WARN_ON(!mvmsta)) | |
2124 | iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); | |
2125 | ||
2126 | rcu_read_unlock(); | |
2127 | } |