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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 | * | |
51368bf7 | 8 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8b4139dc | 9 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
8ca151b5 JB |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of version 2 of the GNU General Public License as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
23 | * USA | |
24 | * | |
25 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 26 | * in the file called COPYING. |
8ca151b5 JB |
27 | * |
28 | * Contact Information: | |
29 | * Intel Linux Wireless <ilw@linux.intel.com> | |
30 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
31 | * | |
32 | * BSD LICENSE | |
33 | * | |
51368bf7 | 34 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8b4139dc | 35 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
8ca151b5 JB |
36 | * All rights reserved. |
37 | * | |
38 | * Redistribution and use in source and binary forms, with or without | |
39 | * modification, are permitted provided that the following conditions | |
40 | * are met: | |
41 | * | |
42 | * * Redistributions of source code must retain the above copyright | |
43 | * notice, this list of conditions and the following disclaimer. | |
44 | * * Redistributions in binary form must reproduce the above copyright | |
45 | * notice, this list of conditions and the following disclaimer in | |
46 | * the documentation and/or other materials provided with the | |
47 | * distribution. | |
48 | * * Neither the name Intel Corporation nor the names of its | |
49 | * contributors may be used to endorse or promote products derived | |
50 | * from this software without specific prior written permission. | |
51 | * | |
52 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
53 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
54 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
55 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
56 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
57 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
58 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
59 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
60 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
61 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
62 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
63 | * | |
64 | *****************************************************************************/ | |
65 | ||
66 | #include <linux/etherdevice.h> | |
67 | #include <net/mac80211.h> | |
68 | #include "iwl-io.h" | |
69 | #include "iwl-prph.h" | |
70 | #include "fw-api.h" | |
71 | #include "mvm.h" | |
7f0a7c67 | 72 | #include "time-event.h" |
8ca151b5 JB |
73 | |
74 | const u8 iwl_mvm_ac_to_tx_fifo[] = { | |
8ca151b5 | 75 | IWL_MVM_TX_FIFO_VO, |
3dd94794 EG |
76 | IWL_MVM_TX_FIFO_VI, |
77 | IWL_MVM_TX_FIFO_BE, | |
78 | IWL_MVM_TX_FIFO_BK, | |
8ca151b5 JB |
79 | }; |
80 | ||
81 | struct iwl_mvm_mac_iface_iterator_data { | |
82 | struct iwl_mvm *mvm; | |
83 | struct ieee80211_vif *vif; | |
84 | unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)]; | |
85 | unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)]; | |
19e737c9 | 86 | unsigned long used_hw_queues[BITS_TO_LONGS(IWL_MVM_MAX_QUEUES)]; |
8ca151b5 JB |
87 | enum iwl_tsf_id preferred_tsf; |
88 | bool found_vif; | |
89 | }; | |
90 | ||
6e97b0d2 IP |
91 | static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac, |
92 | struct ieee80211_vif *vif) | |
8ca151b5 JB |
93 | { |
94 | struct iwl_mvm_mac_iface_iterator_data *data = _data; | |
95 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
2c3e62a1 | 96 | u16 min_bi; |
8ca151b5 | 97 | |
6e97b0d2 IP |
98 | /* Skip the interface for which we are trying to assign a tsf_id */ |
99 | if (vif == data->vif) | |
8ca151b5 | 100 | return; |
8ca151b5 JB |
101 | |
102 | /* | |
103 | * The TSF is a hardware/firmware resource, there are 4 and | |
104 | * the driver should assign and free them as needed. However, | |
105 | * there are cases where 2 MACs should share the same TSF ID | |
106 | * for the purpose of clock sync, an optimization to avoid | |
107 | * clock drift causing overlapping TBTTs/DTIMs for a GO and | |
108 | * client in the system. | |
109 | * | |
110 | * The firmware will decide according to the MAC type which | |
111 | * will be the master and slave. Clients that need to sync | |
112 | * with a remote station will be the master, and an AP or GO | |
113 | * will be the slave. | |
114 | * | |
115 | * Depending on the new interface type it can be slaved to | |
116 | * or become the master of an existing interface. | |
117 | */ | |
118 | switch (data->vif->type) { | |
119 | case NL80211_IFTYPE_STATION: | |
120 | /* | |
2c3e62a1 IP |
121 | * The new interface is a client, so if the one we're iterating |
122 | * is an AP, and the beacon interval of the AP is a multiple or | |
123 | * divisor of the beacon interval of the client, the same TSF | |
124 | * should be used to avoid drift between the new client and | |
125 | * existing AP. The existing AP will get drift updates from the | |
126 | * new client context in this case. | |
8ca151b5 | 127 | */ |
2c3e62a1 IP |
128 | if (vif->type != NL80211_IFTYPE_AP || |
129 | data->preferred_tsf != NUM_TSF_IDS || | |
130 | !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) | |
131 | break; | |
132 | ||
133 | min_bi = min(data->vif->bss_conf.beacon_int, | |
134 | vif->bss_conf.beacon_int); | |
135 | ||
136 | if (!min_bi) | |
137 | break; | |
138 | ||
139 | if ((data->vif->bss_conf.beacon_int - | |
140 | vif->bss_conf.beacon_int) % min_bi == 0) { | |
141 | data->preferred_tsf = mvmvif->tsf_id; | |
142 | return; | |
8ca151b5 JB |
143 | } |
144 | break; | |
2c3e62a1 | 145 | |
8ca151b5 JB |
146 | case NL80211_IFTYPE_AP: |
147 | /* | |
2c3e62a1 IP |
148 | * The new interface is AP/GO, so if its beacon interval is a |
149 | * multiple or a divisor of the beacon interval of an existing | |
150 | * interface, it should get drift updates from an existing | |
151 | * client or use the same TSF as an existing GO. There's no | |
152 | * drift between TSFs internally but if they used different | |
153 | * TSFs then a new client MAC could update one of them and | |
154 | * cause drift that way. | |
8ca151b5 | 155 | */ |
2c3e62a1 IP |
156 | if ((vif->type != NL80211_IFTYPE_AP && |
157 | vif->type != NL80211_IFTYPE_STATION) || | |
158 | data->preferred_tsf != NUM_TSF_IDS || | |
159 | !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) | |
160 | break; | |
161 | ||
162 | min_bi = min(data->vif->bss_conf.beacon_int, | |
163 | vif->bss_conf.beacon_int); | |
164 | ||
165 | if (!min_bi) | |
166 | break; | |
167 | ||
168 | if ((data->vif->bss_conf.beacon_int - | |
169 | vif->bss_conf.beacon_int) % min_bi == 0) { | |
170 | data->preferred_tsf = mvmvif->tsf_id; | |
171 | return; | |
8ca151b5 JB |
172 | } |
173 | break; | |
174 | default: | |
175 | /* | |
176 | * For all other interface types there's no need to | |
177 | * take drift into account. Either they're exclusive | |
178 | * like IBSS and monitor, or we don't care much about | |
179 | * their TSF (like P2P Device), but we won't be able | |
180 | * to share the TSF resource. | |
181 | */ | |
182 | break; | |
183 | } | |
184 | ||
185 | /* | |
186 | * Unless we exited above, we can't share the TSF resource | |
187 | * that the virtual interface we're iterating over is using | |
188 | * with the new one, so clear the available bit and if this | |
189 | * was the preferred one, reset that as well. | |
190 | */ | |
191 | __clear_bit(mvmvif->tsf_id, data->available_tsf_ids); | |
192 | ||
193 | if (data->preferred_tsf == mvmvif->tsf_id) | |
194 | data->preferred_tsf = NUM_TSF_IDS; | |
195 | } | |
196 | ||
6e97b0d2 IP |
197 | static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac, |
198 | struct ieee80211_vif *vif) | |
199 | { | |
200 | struct iwl_mvm_mac_iface_iterator_data *data = _data; | |
201 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
202 | u32 ac; | |
203 | ||
204 | /* Iterator may already find the interface being added -- skip it */ | |
205 | if (vif == data->vif) { | |
206 | data->found_vif = true; | |
207 | return; | |
208 | } | |
209 | ||
210 | /* Mark the queues used by the vif */ | |
211 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
212 | if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) | |
213 | __set_bit(vif->hw_queue[ac], data->used_hw_queues); | |
214 | ||
215 | if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
216 | __set_bit(vif->cab_queue, data->used_hw_queues); | |
217 | ||
218 | /* Mark MAC IDs as used by clearing the available bit, and | |
219 | * (below) mark TSFs as used if their existing use is not | |
220 | * compatible with the new interface type. | |
221 | * No locking or atomic bit operations are needed since the | |
222 | * data is on the stack of the caller function. | |
223 | */ | |
224 | __clear_bit(mvmvif->id, data->available_mac_ids); | |
225 | ||
226 | /* find a suitable tsf_id */ | |
227 | iwl_mvm_mac_tsf_id_iter(_data, mac, vif); | |
228 | } | |
229 | ||
8ca151b5 JB |
230 | /* |
231 | * Get the mask of the queus used by the vif | |
232 | */ | |
233 | u32 iwl_mvm_mac_get_queues_mask(struct iwl_mvm *mvm, | |
234 | struct ieee80211_vif *vif) | |
235 | { | |
837fb69f | 236 | u32 qmask = 0, ac; |
8ca151b5 JB |
237 | |
238 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) | |
398e8c6c | 239 | return BIT(IWL_MVM_OFFCHANNEL_QUEUE); |
8ca151b5 | 240 | |
8ca151b5 JB |
241 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
242 | if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) | |
243 | qmask |= BIT(vif->hw_queue[ac]); | |
244 | ||
245 | return qmask; | |
246 | } | |
247 | ||
6e97b0d2 IP |
248 | void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm, |
249 | struct ieee80211_vif *vif) | |
250 | { | |
251 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
252 | struct iwl_mvm_mac_iface_iterator_data data = { | |
253 | .mvm = mvm, | |
254 | .vif = vif, | |
255 | .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, | |
256 | /* no preference yet */ | |
257 | .preferred_tsf = NUM_TSF_IDS, | |
258 | }; | |
259 | ||
260 | ieee80211_iterate_active_interfaces_atomic( | |
261 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
262 | iwl_mvm_mac_tsf_id_iter, &data); | |
263 | ||
264 | if (data.preferred_tsf != NUM_TSF_IDS) | |
265 | mvmvif->tsf_id = data.preferred_tsf; | |
266 | else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids)) | |
267 | mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, | |
268 | NUM_TSF_IDS); | |
269 | } | |
270 | ||
8ca151b5 JB |
271 | static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm, |
272 | struct ieee80211_vif *vif) | |
273 | { | |
274 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
275 | struct iwl_mvm_mac_iface_iterator_data data = { | |
276 | .mvm = mvm, | |
277 | .vif = vif, | |
278 | .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, | |
279 | .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, | |
280 | /* no preference yet */ | |
281 | .preferred_tsf = NUM_TSF_IDS, | |
282 | .used_hw_queues = { | |
283 | BIT(IWL_MVM_OFFCHANNEL_QUEUE) | | |
19e737c9 | 284 | BIT(mvm->aux_queue) | |
8ca151b5 JB |
285 | BIT(IWL_MVM_CMD_QUEUE) |
286 | }, | |
287 | .found_vif = false, | |
288 | }; | |
289 | u32 ac; | |
9ee718aa | 290 | int ret, i; |
8ca151b5 JB |
291 | |
292 | /* | |
293 | * Allocate a MAC ID and a TSF for this MAC, along with the queues | |
294 | * and other resources. | |
295 | */ | |
296 | ||
297 | /* | |
298 | * Before the iterator, we start with all MAC IDs and TSFs available. | |
299 | * | |
300 | * During iteration, all MAC IDs are cleared that are in use by other | |
301 | * virtual interfaces, and all TSF IDs are cleared that can't be used | |
302 | * by this new virtual interface because they're used by an interface | |
303 | * that can't share it with the new one. | |
304 | * At the same time, we check if there's a preferred TSF in the case | |
305 | * that we should share it with another interface. | |
306 | */ | |
307 | ||
5023d966 JB |
308 | /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */ |
309 | switch (vif->type) { | |
310 | case NL80211_IFTYPE_ADHOC: | |
311 | break; | |
312 | case NL80211_IFTYPE_STATION: | |
313 | if (!vif->p2p) | |
314 | break; | |
315 | /* fall through */ | |
316 | default: | |
ec8b6885 | 317 | __clear_bit(0, data.available_mac_ids); |
5023d966 | 318 | } |
ec8b6885 | 319 | |
8ca151b5 JB |
320 | ieee80211_iterate_active_interfaces_atomic( |
321 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
322 | iwl_mvm_mac_iface_iterator, &data); | |
323 | ||
324 | /* | |
325 | * In the case we're getting here during resume, it's similar to | |
326 | * firmware restart, and with RESUME_ALL the iterator will find | |
327 | * the vif being added already. | |
328 | * We don't want to reassign any IDs in either case since doing | |
329 | * so would probably assign different IDs (as interfaces aren't | |
330 | * necessarily added in the same order), but the old IDs were | |
331 | * preserved anyway, so skip ID assignment for both resume and | |
332 | * recovery. | |
333 | */ | |
334 | if (data.found_vif) | |
335 | return 0; | |
336 | ||
337 | /* Therefore, in recovery, we can't get here */ | |
fd11bd05 IP |
338 | if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) |
339 | return -EBUSY; | |
8ca151b5 JB |
340 | |
341 | mvmvif->id = find_first_bit(data.available_mac_ids, | |
342 | NUM_MAC_INDEX_DRIVER); | |
343 | if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { | |
344 | IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); | |
345 | ret = -EIO; | |
346 | goto exit_fail; | |
347 | } | |
348 | ||
349 | if (data.preferred_tsf != NUM_TSF_IDS) | |
350 | mvmvif->tsf_id = data.preferred_tsf; | |
351 | else | |
352 | mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, | |
353 | NUM_TSF_IDS); | |
354 | if (mvmvif->tsf_id == NUM_TSF_IDS) { | |
355 | IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); | |
356 | ret = -EIO; | |
357 | goto exit_fail; | |
358 | } | |
359 | ||
360 | mvmvif->color = 0; | |
361 | ||
1e849c93 IP |
362 | INIT_LIST_HEAD(&mvmvif->time_event_data.list); |
363 | mvmvif->time_event_data.id = TE_MAX; | |
364 | ||
8ca151b5 JB |
365 | /* No need to allocate data queues to P2P Device MAC.*/ |
366 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
367 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
368 | vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE; | |
369 | ||
370 | return 0; | |
371 | } | |
372 | ||
373 | /* Find available queues, and allocate them to the ACs */ | |
374 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
375 | u8 queue = find_first_zero_bit(data.used_hw_queues, | |
19e737c9 | 376 | mvm->first_agg_queue); |
8ca151b5 | 377 | |
19e737c9 | 378 | if (queue >= mvm->first_agg_queue) { |
8ca151b5 JB |
379 | IWL_ERR(mvm, "Failed to allocate queue\n"); |
380 | ret = -EIO; | |
381 | goto exit_fail; | |
382 | } | |
383 | ||
384 | __set_bit(queue, data.used_hw_queues); | |
385 | vif->hw_queue[ac] = queue; | |
386 | } | |
387 | ||
388 | /* Allocate the CAB queue for softAP and GO interfaces */ | |
389 | if (vif->type == NL80211_IFTYPE_AP) { | |
390 | u8 queue = find_first_zero_bit(data.used_hw_queues, | |
19e737c9 | 391 | mvm->first_agg_queue); |
8ca151b5 | 392 | |
19e737c9 | 393 | if (queue >= mvm->first_agg_queue) { |
8ca151b5 JB |
394 | IWL_ERR(mvm, "Failed to allocate cab queue\n"); |
395 | ret = -EIO; | |
396 | goto exit_fail; | |
397 | } | |
398 | ||
399 | vif->cab_queue = queue; | |
400 | } else { | |
401 | vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
402 | } | |
403 | ||
404 | mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT; | |
405 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
406 | ||
9ee718aa EL |
407 | for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) |
408 | mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC; | |
409 | ||
8ca151b5 JB |
410 | return 0; |
411 | ||
412 | exit_fail: | |
413 | memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); | |
414 | memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue)); | |
415 | vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
416 | return ret; | |
417 | } | |
418 | ||
419 | int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
420 | { | |
421 | u32 ac; | |
422 | int ret; | |
423 | ||
424 | lockdep_assert_held(&mvm->mutex); | |
425 | ||
426 | ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif); | |
427 | if (ret) | |
428 | return ret; | |
429 | ||
430 | switch (vif->type) { | |
431 | case NL80211_IFTYPE_P2P_DEVICE: | |
432 | iwl_trans_ac_txq_enable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE, | |
433 | IWL_MVM_TX_FIFO_VO); | |
434 | break; | |
435 | case NL80211_IFTYPE_AP: | |
436 | iwl_trans_ac_txq_enable(mvm->trans, vif->cab_queue, | |
86a91ec7 | 437 | IWL_MVM_TX_FIFO_MCAST); |
8ca151b5 JB |
438 | /* fall through */ |
439 | default: | |
440 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
441 | iwl_trans_ac_txq_enable(mvm->trans, vif->hw_queue[ac], | |
442 | iwl_mvm_ac_to_tx_fifo[ac]); | |
443 | break; | |
444 | } | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
449 | void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
450 | { | |
451 | int ac; | |
452 | ||
453 | lockdep_assert_held(&mvm->mutex); | |
454 | ||
455 | switch (vif->type) { | |
456 | case NL80211_IFTYPE_P2P_DEVICE: | |
d4578ea8 JB |
457 | iwl_trans_txq_disable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE, |
458 | true); | |
8ca151b5 JB |
459 | break; |
460 | case NL80211_IFTYPE_AP: | |
d4578ea8 | 461 | iwl_trans_txq_disable(mvm->trans, vif->cab_queue, true); |
8ca151b5 JB |
462 | /* fall through */ |
463 | default: | |
464 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
d4578ea8 JB |
465 | iwl_trans_txq_disable(mvm->trans, vif->hw_queue[ac], |
466 | true); | |
8ca151b5 JB |
467 | } |
468 | } | |
469 | ||
470 | static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, | |
471 | struct ieee80211_vif *vif, | |
472 | enum ieee80211_band band, | |
473 | u8 *cck_rates, u8 *ofdm_rates) | |
474 | { | |
475 | struct ieee80211_supported_band *sband; | |
476 | unsigned long basic = vif->bss_conf.basic_rates; | |
477 | int lowest_present_ofdm = 100; | |
478 | int lowest_present_cck = 100; | |
479 | u8 cck = 0; | |
480 | u8 ofdm = 0; | |
481 | int i; | |
482 | ||
483 | sband = mvm->hw->wiphy->bands[band]; | |
484 | ||
485 | for_each_set_bit(i, &basic, BITS_PER_LONG) { | |
486 | int hw = sband->bitrates[i].hw_value; | |
487 | if (hw >= IWL_FIRST_OFDM_RATE) { | |
488 | ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); | |
489 | if (lowest_present_ofdm > hw) | |
490 | lowest_present_ofdm = hw; | |
491 | } else { | |
492 | BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); | |
493 | ||
494 | cck |= BIT(hw); | |
495 | if (lowest_present_cck > hw) | |
496 | lowest_present_cck = hw; | |
497 | } | |
498 | } | |
499 | ||
500 | /* | |
501 | * Now we've got the basic rates as bitmaps in the ofdm and cck | |
502 | * variables. This isn't sufficient though, as there might not | |
503 | * be all the right rates in the bitmap. E.g. if the only basic | |
504 | * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps | |
505 | * and 6 Mbps because the 802.11-2007 standard says in 9.6: | |
506 | * | |
507 | * [...] a STA responding to a received frame shall transmit | |
508 | * its Control Response frame [...] at the highest rate in the | |
509 | * BSSBasicRateSet parameter that is less than or equal to the | |
510 | * rate of the immediately previous frame in the frame exchange | |
511 | * sequence ([...]) and that is of the same modulation class | |
512 | * ([...]) as the received frame. If no rate contained in the | |
513 | * BSSBasicRateSet parameter meets these conditions, then the | |
514 | * control frame sent in response to a received frame shall be | |
515 | * transmitted at the highest mandatory rate of the PHY that is | |
516 | * less than or equal to the rate of the received frame, and | |
517 | * that is of the same modulation class as the received frame. | |
518 | * | |
519 | * As a consequence, we need to add all mandatory rates that are | |
520 | * lower than all of the basic rates to these bitmaps. | |
521 | */ | |
522 | ||
523 | if (IWL_RATE_24M_INDEX < lowest_present_ofdm) | |
524 | ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; | |
525 | if (IWL_RATE_12M_INDEX < lowest_present_ofdm) | |
526 | ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; | |
527 | /* 6M already there or needed so always add */ | |
528 | ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; | |
529 | ||
530 | /* | |
531 | * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. | |
532 | * Note, however: | |
533 | * - if no CCK rates are basic, it must be ERP since there must | |
534 | * be some basic rates at all, so they're OFDM => ERP PHY | |
535 | * (or we're in 5 GHz, and the cck bitmap will never be used) | |
536 | * - if 11M is a basic rate, it must be ERP as well, so add 5.5M | |
537 | * - if 5.5M is basic, 1M and 2M are mandatory | |
538 | * - if 2M is basic, 1M is mandatory | |
539 | * - if 1M is basic, that's the only valid ACK rate. | |
540 | * As a consequence, it's not as complicated as it sounds, just add | |
541 | * any lower rates to the ACK rate bitmap. | |
542 | */ | |
543 | if (IWL_RATE_11M_INDEX < lowest_present_cck) | |
544 | cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; | |
545 | if (IWL_RATE_5M_INDEX < lowest_present_cck) | |
546 | cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; | |
547 | if (IWL_RATE_2M_INDEX < lowest_present_cck) | |
548 | cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; | |
549 | /* 1M already there or needed so always add */ | |
550 | cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; | |
551 | ||
552 | *cck_rates = cck; | |
553 | *ofdm_rates = ofdm; | |
554 | } | |
555 | ||
8a5e3660 AA |
556 | static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm, |
557 | struct ieee80211_vif *vif, | |
558 | struct iwl_mac_ctx_cmd *cmd) | |
559 | { | |
560 | /* for both sta and ap, ht_operation_mode hold the protection_mode */ | |
561 | u8 protection_mode = vif->bss_conf.ht_operation_mode & | |
562 | IEEE80211_HT_OP_MODE_PROTECTION; | |
563 | /* The fw does not distinguish between ht and fat */ | |
564 | u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT; | |
565 | ||
566 | IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode); | |
567 | /* | |
568 | * See section 9.23.3.1 of IEEE 80211-2012. | |
569 | * Nongreenfield HT STAs Present is not supported. | |
570 | */ | |
571 | switch (protection_mode) { | |
572 | case IEEE80211_HT_OP_MODE_PROTECTION_NONE: | |
573 | break; | |
574 | case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: | |
575 | case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: | |
576 | cmd->protection_flags |= cpu_to_le32(ht_flag); | |
577 | break; | |
578 | case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: | |
579 | /* Protect when channel wider than 20MHz */ | |
580 | if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) | |
581 | cmd->protection_flags |= cpu_to_le32(ht_flag); | |
582 | break; | |
583 | default: | |
584 | IWL_ERR(mvm, "Illegal protection mode %d\n", | |
585 | protection_mode); | |
586 | break; | |
587 | } | |
588 | } | |
589 | ||
8ca151b5 JB |
590 | static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, |
591 | struct ieee80211_vif *vif, | |
592 | struct iwl_mac_ctx_cmd *cmd, | |
3dfd3a97 | 593 | const u8 *bssid_override, |
8ca151b5 JB |
594 | u32 action) |
595 | { | |
596 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
597 | struct ieee80211_chanctx_conf *chanctx; | |
8a5e3660 AA |
598 | bool ht_enabled = !!(vif->bss_conf.ht_operation_mode & |
599 | IEEE80211_HT_OP_MODE_PROTECTION); | |
8ca151b5 | 600 | u8 cck_ack_rates, ofdm_ack_rates; |
3dfd3a97 | 601 | const u8 *bssid = bssid_override ?: vif->bss_conf.bssid; |
8ca151b5 JB |
602 | int i; |
603 | ||
604 | cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
605 | mvmvif->color)); | |
606 | cmd->action = cpu_to_le32(action); | |
607 | ||
608 | switch (vif->type) { | |
609 | case NL80211_IFTYPE_STATION: | |
610 | if (vif->p2p) | |
611 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA); | |
612 | else | |
613 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA); | |
614 | break; | |
615 | case NL80211_IFTYPE_AP: | |
616 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO); | |
617 | break; | |
618 | case NL80211_IFTYPE_MONITOR: | |
619 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER); | |
620 | break; | |
621 | case NL80211_IFTYPE_P2P_DEVICE: | |
622 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE); | |
623 | break; | |
624 | case NL80211_IFTYPE_ADHOC: | |
625 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS); | |
626 | break; | |
627 | default: | |
628 | WARN_ON_ONCE(1); | |
629 | } | |
630 | ||
631 | cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); | |
632 | ||
633 | memcpy(cmd->node_addr, vif->addr, ETH_ALEN); | |
3dfd3a97 JB |
634 | |
635 | if (bssid) | |
636 | memcpy(cmd->bssid_addr, bssid, ETH_ALEN); | |
8ca151b5 JB |
637 | else |
638 | eth_broadcast_addr(cmd->bssid_addr); | |
639 | ||
640 | rcu_read_lock(); | |
641 | chanctx = rcu_dereference(vif->chanctx_conf); | |
642 | iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band | |
643 | : IEEE80211_BAND_2GHZ, | |
644 | &cck_ack_rates, &ofdm_ack_rates); | |
645 | rcu_read_unlock(); | |
646 | ||
647 | cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates); | |
648 | cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); | |
649 | ||
650 | cmd->cck_short_preamble = | |
651 | cpu_to_le32(vif->bss_conf.use_short_preamble ? | |
652 | MAC_FLG_SHORT_PREAMBLE : 0); | |
653 | cmd->short_slot = | |
654 | cpu_to_le32(vif->bss_conf.use_short_slot ? | |
655 | MAC_FLG_SHORT_SLOT : 0); | |
656 | ||
3dd94794 EG |
657 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
658 | u8 txf = iwl_mvm_ac_to_tx_fifo[i]; | |
659 | ||
660 | cmd->ac[txf].cw_min = | |
661 | cpu_to_le16(mvmvif->queue_params[i].cw_min); | |
662 | cmd->ac[txf].cw_max = | |
663 | cpu_to_le16(mvmvif->queue_params[i].cw_max); | |
664 | cmd->ac[txf].edca_txop = | |
8ca151b5 | 665 | cpu_to_le16(mvmvif->queue_params[i].txop * 32); |
3dd94794 EG |
666 | cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs; |
667 | cmd->ac[txf].fifos_mask = BIT(txf); | |
8ca151b5 JB |
668 | } |
669 | ||
86a91ec7 EG |
670 | /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ |
671 | if (vif->type == NL80211_IFTYPE_AP) | |
3dd94794 EG |
672 | cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= |
673 | BIT(IWL_MVM_TX_FIFO_MCAST); | |
86a91ec7 | 674 | |
8ca151b5 JB |
675 | if (vif->bss_conf.qos) |
676 | cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); | |
677 | ||
dc271ee0 | 678 | if (vif->bss_conf.use_cts_prot) |
cc7ee2ba | 679 | cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); |
dc271ee0 | 680 | |
8a5e3660 AA |
681 | IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", |
682 | vif->bss_conf.use_cts_prot, | |
683 | vif->bss_conf.ht_operation_mode); | |
684 | if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) | |
8ca151b5 | 685 | cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); |
8a5e3660 AA |
686 | if (ht_enabled) |
687 | iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd); | |
8ca151b5 JB |
688 | |
689 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP); | |
690 | } | |
691 | ||
692 | static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, | |
693 | struct iwl_mac_ctx_cmd *cmd) | |
694 | { | |
a1022927 | 695 | int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, |
8ca151b5 JB |
696 | sizeof(*cmd), cmd); |
697 | if (ret) | |
698 | IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n", | |
699 | le32_to_cpu(cmd->action), ret); | |
700 | return ret; | |
701 | } | |
702 | ||
cf52023c LC |
703 | static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm, |
704 | struct ieee80211_vif *vif, | |
3dfd3a97 JB |
705 | u32 action, bool force_assoc_off, |
706 | const u8 *bssid_override) | |
8ca151b5 | 707 | { |
cf52023c LC |
708 | struct iwl_mac_ctx_cmd cmd = {}; |
709 | struct iwl_mac_data_sta *ctxt_sta; | |
710 | ||
711 | WARN_ON(vif->type != NL80211_IFTYPE_STATION); | |
712 | ||
713 | /* Fill the common data for all mac context types */ | |
3dfd3a97 | 714 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action); |
cf52023c LC |
715 | |
716 | if (vif->p2p) { | |
717 | struct ieee80211_p2p_noa_attr *noa = | |
718 | &vif->bss_conf.p2p_noa_attr; | |
719 | ||
720 | cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow & | |
721 | IEEE80211_P2P_OPPPS_CTWINDOW_MASK); | |
722 | ctxt_sta = &cmd.p2p_sta.sta; | |
723 | } else { | |
cf52023c LC |
724 | ctxt_sta = &cmd.sta; |
725 | } | |
726 | ||
210a544e | 727 | /* We need the dtim_period to set the MAC as associated */ |
ba283927 AB |
728 | if (vif->bss_conf.assoc && vif->bss_conf.dtim_period && |
729 | !force_assoc_off) { | |
d2931bbd JB |
730 | u32 dtim_offs; |
731 | ||
cad3f08c LC |
732 | /* Allow beacons to pass through as long as we are not |
733 | * associated, or we do not have dtim period information. | |
734 | */ | |
53446699 | 735 | cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); |
cad3f08c | 736 | |
d2931bbd JB |
737 | /* |
738 | * The DTIM count counts down, so when it is N that means N | |
739 | * more beacon intervals happen until the DTIM TBTT. Therefore | |
740 | * add this to the current time. If that ends up being in the | |
741 | * future, the firmware will handle it. | |
742 | * | |
743 | * Also note that the system_timestamp (which we get here as | |
744 | * "sync_device_ts") and TSF timestamp aren't at exactly the | |
745 | * same offset in the frame -- the TSF is at the first symbol | |
746 | * of the TSF, the system timestamp is at signal acquisition | |
747 | * time. This means there's an offset between them of at most | |
748 | * a few hundred microseconds (24 * 8 bits + PLCP time gives | |
749 | * 384us in the longest case), this is currently not relevant | |
750 | * as the firmware wakes up around 2ms before the TBTT. | |
751 | */ | |
752 | dtim_offs = vif->bss_conf.sync_dtim_count * | |
753 | vif->bss_conf.beacon_int; | |
754 | /* convert TU to usecs */ | |
755 | dtim_offs *= 1024; | |
756 | ||
757 | ctxt_sta->dtim_tsf = | |
758 | cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs); | |
759 | ctxt_sta->dtim_time = | |
760 | cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs); | |
761 | ||
762 | IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", | |
763 | le64_to_cpu(ctxt_sta->dtim_tsf), | |
764 | le32_to_cpu(ctxt_sta->dtim_time), | |
765 | dtim_offs); | |
766 | ||
210a544e | 767 | ctxt_sta->is_assoc = cpu_to_le32(1); |
d2931bbd | 768 | } else { |
210a544e | 769 | ctxt_sta->is_assoc = cpu_to_le32(0); |
d2931bbd | 770 | } |
8ca151b5 JB |
771 | |
772 | ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
773 | ctxt_sta->bi_reciprocal = | |
774 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); | |
775 | ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * | |
776 | vif->bss_conf.dtim_period); | |
777 | ctxt_sta->dtim_reciprocal = | |
778 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int * | |
779 | vif->bss_conf.dtim_period)); | |
780 | ||
781 | ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); | |
782 | ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid); | |
8ca151b5 JB |
783 | |
784 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
785 | } | |
786 | ||
787 | static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, | |
788 | struct ieee80211_vif *vif, | |
789 | u32 action) | |
790 | { | |
791 | struct iwl_mac_ctx_cmd cmd = {}; | |
792 | ||
793 | WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); | |
794 | ||
3dfd3a97 | 795 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
53585495 JB |
796 | |
797 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | | |
798 | MAC_FILTER_IN_CONTROL_AND_MGMT | | |
799 | MAC_FILTER_IN_BEACON | | |
fb8b8ee1 JB |
800 | MAC_FILTER_IN_PROBE_REQUEST | |
801 | MAC_FILTER_IN_CRC32); | |
802 | mvm->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS; | |
53585495 | 803 | |
8ca151b5 JB |
804 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); |
805 | } | |
806 | ||
5023d966 JB |
807 | static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, |
808 | struct ieee80211_vif *vif, | |
809 | u32 action) | |
810 | { | |
811 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
812 | struct iwl_mac_ctx_cmd cmd = {}; | |
813 | ||
814 | WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); | |
815 | ||
3dfd3a97 | 816 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
5023d966 JB |
817 | |
818 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | | |
819 | MAC_FILTER_IN_PROBE_REQUEST); | |
820 | ||
821 | /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */ | |
822 | cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
823 | cmd.ibss.bi_reciprocal = | |
824 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); | |
825 | ||
826 | /* TODO: Assumes that the beacon id == mac context id */ | |
827 | cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id); | |
828 | ||
829 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
830 | } | |
831 | ||
8ca151b5 JB |
832 | struct iwl_mvm_go_iterator_data { |
833 | bool go_active; | |
834 | }; | |
835 | ||
836 | static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) | |
837 | { | |
838 | struct iwl_mvm_go_iterator_data *data = _data; | |
839 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
840 | ||
5023d966 JB |
841 | if (vif->type == NL80211_IFTYPE_AP && vif->p2p && |
842 | mvmvif->ap_ibss_active) | |
8ca151b5 JB |
843 | data->go_active = true; |
844 | } | |
845 | ||
846 | static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, | |
847 | struct ieee80211_vif *vif, | |
848 | u32 action) | |
849 | { | |
850 | struct iwl_mac_ctx_cmd cmd = {}; | |
851 | struct iwl_mvm_go_iterator_data data = {}; | |
852 | ||
853 | WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); | |
854 | ||
3dfd3a97 | 855 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
8ca151b5 JB |
856 | |
857 | cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); | |
1dcd15ee IP |
858 | |
859 | /* Override the filter flags to accept only probe requests */ | |
860 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); | |
8ca151b5 JB |
861 | |
862 | /* | |
863 | * This flag should be set to true when the P2P Device is | |
864 | * discoverable and there is at least another active P2P GO. Settings | |
865 | * this flag will allow the P2P Device to be discoverable on other | |
866 | * channels in addition to its listen channel. | |
867 | * Note that this flag should not be set in other cases as it opens the | |
868 | * Rx filters on all MAC and increases the number of interrupts. | |
869 | */ | |
870 | ieee80211_iterate_active_interfaces_atomic( | |
871 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
872 | iwl_mvm_go_iterator, &data); | |
873 | ||
874 | cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0); | |
875 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
876 | } | |
877 | ||
878 | static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, | |
879 | struct iwl_mac_beacon_cmd *beacon_cmd, | |
880 | u8 *beacon, u32 frame_size) | |
881 | { | |
882 | u32 tim_idx; | |
883 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; | |
884 | ||
885 | /* The index is relative to frame start but we start looking at the | |
886 | * variable-length part of the beacon. */ | |
887 | tim_idx = mgmt->u.beacon.variable - beacon; | |
888 | ||
889 | /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ | |
890 | while ((tim_idx < (frame_size - 2)) && | |
891 | (beacon[tim_idx] != WLAN_EID_TIM)) | |
892 | tim_idx += beacon[tim_idx+1] + 2; | |
893 | ||
894 | /* If TIM field was found, set variables */ | |
895 | if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { | |
896 | beacon_cmd->tim_idx = cpu_to_le32(tim_idx); | |
897 | beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]); | |
898 | } else { | |
899 | IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); | |
900 | } | |
901 | } | |
902 | ||
903 | static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, | |
904 | struct ieee80211_vif *vif, | |
905 | struct sk_buff *beacon) | |
906 | { | |
907 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
908 | struct iwl_host_cmd cmd = { | |
909 | .id = BEACON_TEMPLATE_CMD, | |
910 | .flags = CMD_ASYNC, | |
911 | }; | |
912 | struct iwl_mac_beacon_cmd beacon_cmd = {}; | |
913 | struct ieee80211_tx_info *info; | |
914 | u32 beacon_skb_len; | |
75f6b9b6 | 915 | u32 rate, tx_flags; |
8ca151b5 JB |
916 | |
917 | if (WARN_ON(!beacon)) | |
918 | return -EINVAL; | |
919 | ||
920 | beacon_skb_len = beacon->len; | |
921 | ||
922 | /* TODO: for now the beacon template id is set to be the mac context id. | |
923 | * Might be better to handle it as another resource ... */ | |
924 | beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); | |
75f6b9b6 | 925 | info = IEEE80211_SKB_CB(beacon); |
8ca151b5 JB |
926 | |
927 | /* Set up TX command fields */ | |
928 | beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len); | |
929 | beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id; | |
930 | beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); | |
75f6b9b6 EG |
931 | tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF; |
932 | tx_flags |= | |
933 | iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) << | |
934 | TX_CMD_FLG_BT_PRIO_POS; | |
935 | beacon_cmd.tx.tx_flags = cpu_to_le32(tx_flags); | |
8ca151b5 JB |
936 | |
937 | mvm->mgmt_last_antenna_idx = | |
4ed735e7 | 938 | iwl_mvm_next_antenna(mvm, mvm->fw->valid_tx_ant, |
8ca151b5 JB |
939 | mvm->mgmt_last_antenna_idx); |
940 | ||
941 | beacon_cmd.tx.rate_n_flags = | |
942 | cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << | |
943 | RATE_MCS_ANT_POS); | |
944 | ||
8ca151b5 JB |
945 | if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) { |
946 | rate = IWL_FIRST_OFDM_RATE; | |
947 | } else { | |
948 | rate = IWL_FIRST_CCK_RATE; | |
949 | beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK); | |
950 | } | |
951 | beacon_cmd.tx.rate_n_flags |= | |
952 | cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate)); | |
953 | ||
954 | /* Set up TX beacon command fields */ | |
5023d966 JB |
955 | if (vif->type == NL80211_IFTYPE_AP) |
956 | iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd, | |
957 | beacon->data, | |
958 | beacon_skb_len); | |
8ca151b5 JB |
959 | |
960 | /* Submit command */ | |
961 | cmd.len[0] = sizeof(beacon_cmd); | |
962 | cmd.data[0] = &beacon_cmd; | |
963 | cmd.dataflags[0] = 0; | |
964 | cmd.len[1] = beacon_skb_len; | |
965 | cmd.data[1] = beacon->data; | |
966 | cmd.dataflags[1] = IWL_HCMD_DFL_DUP; | |
967 | ||
968 | return iwl_mvm_send_cmd(mvm, &cmd); | |
969 | } | |
970 | ||
5023d966 | 971 | /* The beacon template for the AP/GO/IBSS has changed and needs update */ |
8ca151b5 JB |
972 | int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, |
973 | struct ieee80211_vif *vif) | |
974 | { | |
975 | struct sk_buff *beacon; | |
976 | int ret; | |
977 | ||
5023d966 JB |
978 | WARN_ON(vif->type != NL80211_IFTYPE_AP && |
979 | vif->type != NL80211_IFTYPE_ADHOC); | |
8ca151b5 | 980 | |
fe887665 | 981 | beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL); |
8ca151b5 JB |
982 | if (!beacon) |
983 | return -ENOMEM; | |
984 | ||
985 | ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon); | |
986 | dev_kfree_skb(beacon); | |
987 | return ret; | |
988 | } | |
989 | ||
3a3cb92e IP |
990 | struct iwl_mvm_mac_ap_iterator_data { |
991 | struct iwl_mvm *mvm; | |
992 | struct ieee80211_vif *vif; | |
993 | u32 beacon_device_ts; | |
994 | u16 beacon_int; | |
995 | }; | |
996 | ||
997 | /* Find the beacon_device_ts and beacon_int for a managed interface */ | |
998 | static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, | |
999 | struct ieee80211_vif *vif) | |
1000 | { | |
1001 | struct iwl_mvm_mac_ap_iterator_data *data = _data; | |
1002 | ||
1003 | if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc) | |
1004 | return; | |
1005 | ||
1006 | /* Station client has higher priority over P2P client*/ | |
1007 | if (vif->p2p && data->beacon_device_ts) | |
1008 | return; | |
1009 | ||
1010 | data->beacon_device_ts = vif->bss_conf.sync_device_ts; | |
1011 | data->beacon_int = vif->bss_conf.beacon_int; | |
1012 | } | |
1013 | ||
8ca151b5 JB |
1014 | /* |
1015 | * Fill the specific data for mac context of type AP of P2P GO | |
1016 | */ | |
1017 | static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, | |
1018 | struct ieee80211_vif *vif, | |
506a81e6 JB |
1019 | struct iwl_mac_data_ap *ctxt_ap, |
1020 | bool add) | |
8ca151b5 JB |
1021 | { |
1022 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
3a3cb92e IP |
1023 | struct iwl_mvm_mac_ap_iterator_data data = { |
1024 | .mvm = mvm, | |
1025 | .vif = vif, | |
1026 | .beacon_device_ts = 0 | |
1027 | }; | |
8ca151b5 JB |
1028 | |
1029 | ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
1030 | ctxt_ap->bi_reciprocal = | |
1031 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); | |
1032 | ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * | |
1033 | vif->bss_conf.dtim_period); | |
1034 | ctxt_ap->dtim_reciprocal = | |
1035 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int * | |
1036 | vif->bss_conf.dtim_period)); | |
1037 | ||
1038 | ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue); | |
8ca151b5 | 1039 | |
506a81e6 | 1040 | /* |
3a3cb92e | 1041 | * Only set the beacon time when the MAC is being added, when we |
506a81e6 JB |
1042 | * just modify the MAC then we should keep the time -- the firmware |
1043 | * can otherwise have a "jumping" TBTT. | |
1044 | */ | |
3a3cb92e IP |
1045 | if (add) { |
1046 | /* | |
1047 | * If there is a station/P2P client interface which is | |
1048 | * associated, set the AP's TBTT far enough from the station's | |
1049 | * TBTT. Otherwise, set it to the current system time | |
1050 | */ | |
1051 | ieee80211_iterate_active_interfaces_atomic( | |
1052 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
1053 | iwl_mvm_mac_ap_iterator, &data); | |
1054 | ||
1055 | if (data.beacon_device_ts) { | |
9f8f8ca5 | 1056 | u32 rand = (prandom_u32() % (64 - 36)) + 36; |
3a3cb92e IP |
1057 | mvmvif->ap_beacon_time = data.beacon_device_ts + |
1058 | ieee80211_tu_to_usec(data.beacon_int * rand / | |
1059 | 100); | |
1060 | } else { | |
1061 | mvmvif->ap_beacon_time = | |
1062 | iwl_read_prph(mvm->trans, | |
1063 | DEVICE_SYSTEM_TIME_REG); | |
1064 | } | |
1065 | } | |
506a81e6 JB |
1066 | |
1067 | ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); | |
506a81e6 | 1068 | ctxt_ap->beacon_tsf = 0; /* unused */ |
8ca151b5 JB |
1069 | |
1070 | /* TODO: Assume that the beacon id == mac context id */ | |
1071 | ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); | |
1072 | } | |
1073 | ||
1074 | static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, | |
1075 | struct ieee80211_vif *vif, | |
1076 | u32 action) | |
1077 | { | |
1078 | struct iwl_mac_ctx_cmd cmd = {}; | |
1079 | ||
1080 | WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); | |
1081 | ||
1082 | /* Fill the common data for all mac context types */ | |
3dfd3a97 | 1083 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
8ca151b5 | 1084 | |
46018794 EP |
1085 | /* |
1086 | * pass probe requests and beacons from other APs (needed | |
1087 | * for ht protection) | |
1088 | */ | |
1089 | cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST | | |
1090 | MAC_FILTER_IN_BEACON); | |
1dcd15ee | 1091 | |
8ca151b5 | 1092 | /* Fill the data specific for ap mode */ |
506a81e6 JB |
1093 | iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap, |
1094 | action == FW_CTXT_ACTION_ADD); | |
8ca151b5 JB |
1095 | |
1096 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
1097 | } | |
1098 | ||
1099 | static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, | |
1100 | struct ieee80211_vif *vif, | |
1101 | u32 action) | |
1102 | { | |
1103 | struct iwl_mac_ctx_cmd cmd = {}; | |
67baf663 | 1104 | struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; |
8ca151b5 JB |
1105 | |
1106 | WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); | |
1107 | ||
1108 | /* Fill the common data for all mac context types */ | |
3dfd3a97 | 1109 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
8ca151b5 | 1110 | |
46018794 EP |
1111 | /* |
1112 | * pass probe requests and beacons from other APs (needed | |
1113 | * for ht protection) | |
1114 | */ | |
1115 | cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST | | |
1116 | MAC_FILTER_IN_BEACON); | |
1117 | ||
8ca151b5 | 1118 | /* Fill the data specific for GO mode */ |
506a81e6 JB |
1119 | iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap, |
1120 | action == FW_CTXT_ACTION_ADD); | |
8ca151b5 | 1121 | |
67baf663 JD |
1122 | cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & |
1123 | IEEE80211_P2P_OPPPS_CTWINDOW_MASK); | |
1124 | cmd.go.opp_ps_enabled = | |
1125 | cpu_to_le32(!!(noa->oppps_ctwindow & | |
1126 | IEEE80211_P2P_OPPPS_ENABLE_BIT)); | |
8ca151b5 JB |
1127 | |
1128 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
1129 | } | |
1130 | ||
1131 | static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
3dfd3a97 JB |
1132 | u32 action, bool force_assoc_off, |
1133 | const u8 *bssid_override) | |
8ca151b5 JB |
1134 | { |
1135 | switch (vif->type) { | |
1136 | case NL80211_IFTYPE_STATION: | |
cf52023c | 1137 | return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action, |
3dfd3a97 JB |
1138 | force_assoc_off, |
1139 | bssid_override); | |
8ca151b5 JB |
1140 | break; |
1141 | case NL80211_IFTYPE_AP: | |
1142 | if (!vif->p2p) | |
1143 | return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); | |
1144 | else | |
1145 | return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); | |
1146 | break; | |
1147 | case NL80211_IFTYPE_MONITOR: | |
1148 | return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); | |
1149 | case NL80211_IFTYPE_P2P_DEVICE: | |
1150 | return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); | |
5023d966 JB |
1151 | case NL80211_IFTYPE_ADHOC: |
1152 | return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); | |
8ca151b5 JB |
1153 | default: |
1154 | break; | |
1155 | } | |
1156 | ||
1157 | return -EOPNOTSUPP; | |
1158 | } | |
1159 | ||
1160 | int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1161 | { | |
1162 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1163 | int ret; | |
1164 | ||
1165 | if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", | |
1166 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1167 | return -EIO; | |
1168 | ||
bca49d9a | 1169 | ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD, |
3dfd3a97 | 1170 | true, NULL); |
8ca151b5 JB |
1171 | if (ret) |
1172 | return ret; | |
1173 | ||
6d9d32b8 JB |
1174 | /* will only do anything at resume from D3 time */ |
1175 | iwl_mvm_set_last_nonqos_seq(mvm, vif); | |
1176 | ||
8ca151b5 JB |
1177 | mvmvif->uploaded = true; |
1178 | return 0; | |
1179 | } | |
1180 | ||
bca49d9a | 1181 | int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
3dfd3a97 | 1182 | bool force_assoc_off, const u8 *bssid_override) |
8ca151b5 JB |
1183 | { |
1184 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1185 | ||
1186 | if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", | |
1187 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1188 | return -EIO; | |
1189 | ||
bca49d9a | 1190 | return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY, |
3dfd3a97 | 1191 | force_assoc_off, bssid_override); |
8ca151b5 JB |
1192 | } |
1193 | ||
1194 | int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1195 | { | |
1196 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1197 | struct iwl_mac_ctx_cmd cmd; | |
1198 | int ret; | |
1199 | ||
1200 | if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", | |
1201 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1202 | return -EIO; | |
1203 | ||
1204 | memset(&cmd, 0, sizeof(cmd)); | |
1205 | ||
1206 | cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
1207 | mvmvif->color)); | |
1208 | cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); | |
1209 | ||
a1022927 | 1210 | ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, |
8ca151b5 JB |
1211 | sizeof(cmd), &cmd); |
1212 | if (ret) { | |
1213 | IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret); | |
1214 | return ret; | |
1215 | } | |
1216 | ||
1217 | mvmvif->uploaded = false; | |
fb8b8ee1 JB |
1218 | |
1219 | if (vif->type == NL80211_IFTYPE_MONITOR) | |
1220 | mvm->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS; | |
1221 | ||
8ca151b5 JB |
1222 | return 0; |
1223 | } | |
571765c8 | 1224 | |
7f0a7c67 AO |
1225 | static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm, |
1226 | struct ieee80211_vif *csa_vif, u32 gp2) | |
1227 | { | |
1228 | struct iwl_mvm_vif *mvmvif = | |
1229 | iwl_mvm_vif_from_mac80211(csa_vif); | |
1230 | ||
1231 | if (!ieee80211_csa_is_complete(csa_vif)) { | |
1232 | int c = ieee80211_csa_update_counter(csa_vif); | |
1233 | ||
1234 | iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif); | |
1235 | if (csa_vif->p2p && | |
1236 | !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2) { | |
1237 | u32 rel_time = (c + 1) * | |
1238 | csa_vif->bss_conf.beacon_int - | |
1239 | IWL_MVM_CHANNEL_SWITCH_TIME; | |
1240 | u32 apply_time = gp2 + rel_time * 1024; | |
1241 | ||
1242 | iwl_mvm_schedule_csa_noa(mvm, csa_vif, | |
1243 | IWL_MVM_CHANNEL_SWITCH_TIME - | |
1244 | IWL_MVM_CHANNEL_SWITCH_MARGIN, | |
1245 | apply_time); | |
1246 | } | |
1247 | } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) { | |
1248 | /* we don't have CSA NoA scheduled yet, switch now */ | |
1249 | ieee80211_csa_finish(csa_vif); | |
1250 | RCU_INIT_POINTER(mvm->csa_vif, NULL); | |
1251 | } | |
1252 | } | |
1253 | ||
571765c8 IP |
1254 | int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, |
1255 | struct iwl_rx_cmd_buffer *rxb, | |
1256 | struct iwl_device_cmd *cmd) | |
1257 | { | |
1258 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1c87bbad | 1259 | struct iwl_mvm_tx_resp *beacon_notify_hdr; |
664322fa | 1260 | struct ieee80211_vif *csa_vif; |
003e5236 | 1261 | struct ieee80211_vif *tx_blocked_vif; |
1c87bbad | 1262 | u64 tsf; |
571765c8 | 1263 | |
bd3398e2 AO |
1264 | lockdep_assert_held(&mvm->mutex); |
1265 | ||
1c87bbad DS |
1266 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_CAPA_EXTENDED_BEACON) { |
1267 | struct iwl_extended_beacon_notif *beacon = (void *)pkt->data; | |
1268 | ||
1269 | beacon_notify_hdr = &beacon->beacon_notify_hdr; | |
1270 | tsf = le64_to_cpu(beacon->tsf); | |
1271 | mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2); | |
1272 | } else { | |
1273 | struct iwl_beacon_notif *beacon = (void *)pkt->data; | |
1274 | ||
1275 | beacon_notify_hdr = &beacon->beacon_notify_hdr; | |
1276 | tsf = le64_to_cpu(beacon->tsf); | |
1277 | } | |
1278 | ||
1279 | IWL_DEBUG_RX(mvm, | |
1280 | "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n", | |
1281 | le16_to_cpu(beacon_notify_hdr->status.status) & | |
1282 | TX_STATUS_MSK, | |
1283 | beacon_notify_hdr->failure_frame, tsf, | |
1284 | mvm->ap_last_beacon_gp2, | |
1285 | le32_to_cpu(beacon_notify_hdr->initial_rate)); | |
bd3398e2 | 1286 | |
664322fa AO |
1287 | csa_vif = rcu_dereference_protected(mvm->csa_vif, |
1288 | lockdep_is_held(&mvm->mutex)); | |
7f0a7c67 AO |
1289 | if (unlikely(csa_vif && csa_vif->csa_active)) |
1290 | iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2); | |
bd3398e2 | 1291 | |
003e5236 AO |
1292 | tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif, |
1293 | lockdep_is_held(&mvm->mutex)); | |
1294 | if (unlikely(tx_blocked_vif)) { | |
1295 | struct iwl_mvm_vif *mvmvif = | |
1296 | iwl_mvm_vif_from_mac80211(tx_blocked_vif); | |
1297 | ||
1298 | /* | |
1299 | * The channel switch is started and we have blocked the | |
1300 | * stations. If this is the first beacon (the timeout wasn't | |
1301 | * set), set the unblock timeout, otherwise countdown | |
1302 | */ | |
1303 | if (!mvm->csa_tx_block_bcn_timeout) | |
1304 | mvm->csa_tx_block_bcn_timeout = | |
1305 | IWL_MVM_CS_UNBLOCK_TX_TIMEOUT; | |
1306 | else | |
1307 | mvm->csa_tx_block_bcn_timeout--; | |
1308 | ||
1309 | /* Check if the timeout is expired, and unblock tx */ | |
1310 | if (mvm->csa_tx_block_bcn_timeout == 0) { | |
1311 | iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); | |
1312 | RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); | |
1313 | } | |
1314 | } | |
1315 | ||
571765c8 IP |
1316 | return 0; |
1317 | } | |
d64048ed HG |
1318 | |
1319 | static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac, | |
1320 | struct ieee80211_vif *vif) | |
1321 | { | |
12d423e8 | 1322 | struct iwl_missed_beacons_notif *missed_beacons = _data; |
d64048ed HG |
1323 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
1324 | ||
12d423e8 IP |
1325 | if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id)) |
1326 | return; | |
1327 | ||
1328 | /* | |
1329 | * TODO: the threshold should be adjusted based on latency conditions, | |
1330 | * and/or in case of a CS flow on one of the other AP vifs. | |
1331 | */ | |
1332 | if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) > | |
1333 | IWL_MVM_MISSED_BEACONS_THRESHOLD) | |
d64048ed HG |
1334 | ieee80211_beacon_loss(vif); |
1335 | } | |
1336 | ||
1337 | int iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, | |
1338 | struct iwl_rx_cmd_buffer *rxb, | |
1339 | struct iwl_device_cmd *cmd) | |
1340 | { | |
1341 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
12d423e8 IP |
1342 | struct iwl_missed_beacons_notif *mb = (void *)pkt->data; |
1343 | ||
1344 | IWL_DEBUG_INFO(mvm, | |
1345 | "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n", | |
1346 | le32_to_cpu(mb->mac_id), | |
1347 | le32_to_cpu(mb->consec_missed_beacons), | |
1348 | le32_to_cpu(mb->consec_missed_beacons_since_last_rx), | |
1349 | le32_to_cpu(mb->num_recvd_beacons), | |
1350 | le32_to_cpu(mb->num_expected_beacons)); | |
d64048ed HG |
1351 | |
1352 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
1353 | IEEE80211_IFACE_ITER_NORMAL, | |
1354 | iwl_mvm_beacon_loss_iterator, | |
12d423e8 | 1355 | mb); |
d64048ed HG |
1356 | return 0; |
1357 | } |