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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 |
09856582 | 10 | * Copyright(c) 2015 - 2017 Intel Deutschland GmbH |
86e177d8 | 11 | * Copyright(c) 2018 Intel Corporation |
8ca151b5 JB |
12 | * |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of version 2 of the GNU General Public License as | |
15 | * published by the Free Software Foundation. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, but | |
18 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | * General Public License for more details. | |
21 | * | |
8ca151b5 | 22 | * The full GNU General Public License is included in this distribution |
410dc5aa | 23 | * in the file called COPYING. |
8ca151b5 JB |
24 | * |
25 | * Contact Information: | |
cb2f8277 | 26 | * Intel Linux Wireless <linuxwifi@intel.com> |
8ca151b5 JB |
27 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
28 | * | |
29 | * BSD LICENSE | |
30 | * | |
51368bf7 | 31 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8b4139dc | 32 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
09856582 | 33 | * Copyright(c) 2015 - 2017 Intel Deutschland GmbH |
86e177d8 | 34 | * Copyright(c) 2018 Intel Corporation |
8ca151b5 JB |
35 | * All rights reserved. |
36 | * | |
37 | * Redistribution and use in source and binary forms, with or without | |
38 | * modification, are permitted provided that the following conditions | |
39 | * are met: | |
40 | * | |
41 | * * Redistributions of source code must retain the above copyright | |
42 | * notice, this list of conditions and the following disclaimer. | |
43 | * * Redistributions in binary form must reproduce the above copyright | |
44 | * notice, this list of conditions and the following disclaimer in | |
45 | * the documentation and/or other materials provided with the | |
46 | * distribution. | |
47 | * * Neither the name Intel Corporation nor the names of its | |
48 | * contributors may be used to endorse or promote products derived | |
49 | * from this software without specific prior written permission. | |
50 | * | |
51 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
52 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
53 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
54 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
55 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
56 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
57 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
58 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
59 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
60 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
61 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
62 | * | |
63 | *****************************************************************************/ | |
64 | ||
65 | #include <linux/etherdevice.h> | |
66 | #include <net/mac80211.h> | |
67 | #include "iwl-io.h" | |
68 | #include "iwl-prph.h" | |
69 | #include "fw-api.h" | |
70 | #include "mvm.h" | |
7f0a7c67 | 71 | #include "time-event.h" |
8ca151b5 JB |
72 | |
73 | const u8 iwl_mvm_ac_to_tx_fifo[] = { | |
8ca151b5 | 74 | IWL_MVM_TX_FIFO_VO, |
3dd94794 EG |
75 | IWL_MVM_TX_FIFO_VI, |
76 | IWL_MVM_TX_FIFO_BE, | |
77 | IWL_MVM_TX_FIFO_BK, | |
8ca151b5 JB |
78 | }; |
79 | ||
cf6c6ea3 EG |
80 | const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = { |
81 | IWL_GEN2_EDCA_TX_FIFO_VO, | |
82 | IWL_GEN2_EDCA_TX_FIFO_VI, | |
83 | IWL_GEN2_EDCA_TX_FIFO_BE, | |
84 | IWL_GEN2_EDCA_TX_FIFO_BK, | |
7126b6f2 SS |
85 | IWL_GEN2_TRIG_TX_FIFO_VO, |
86 | IWL_GEN2_TRIG_TX_FIFO_VI, | |
87 | IWL_GEN2_TRIG_TX_FIFO_BE, | |
88 | IWL_GEN2_TRIG_TX_FIFO_BK, | |
cf6c6ea3 EG |
89 | }; |
90 | ||
8ca151b5 JB |
91 | struct iwl_mvm_mac_iface_iterator_data { |
92 | struct iwl_mvm *mvm; | |
93 | struct ieee80211_vif *vif; | |
94 | unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)]; | |
95 | unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)]; | |
8ca151b5 JB |
96 | enum iwl_tsf_id preferred_tsf; |
97 | bool found_vif; | |
98 | }; | |
99 | ||
6e97b0d2 IP |
100 | static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac, |
101 | struct ieee80211_vif *vif) | |
8ca151b5 JB |
102 | { |
103 | struct iwl_mvm_mac_iface_iterator_data *data = _data; | |
104 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
2c3e62a1 | 105 | u16 min_bi; |
8ca151b5 | 106 | |
6e97b0d2 IP |
107 | /* Skip the interface for which we are trying to assign a tsf_id */ |
108 | if (vif == data->vif) | |
8ca151b5 | 109 | return; |
8ca151b5 JB |
110 | |
111 | /* | |
112 | * The TSF is a hardware/firmware resource, there are 4 and | |
113 | * the driver should assign and free them as needed. However, | |
114 | * there are cases where 2 MACs should share the same TSF ID | |
115 | * for the purpose of clock sync, an optimization to avoid | |
116 | * clock drift causing overlapping TBTTs/DTIMs for a GO and | |
117 | * client in the system. | |
118 | * | |
119 | * The firmware will decide according to the MAC type which | |
120 | * will be the master and slave. Clients that need to sync | |
121 | * with a remote station will be the master, and an AP or GO | |
122 | * will be the slave. | |
123 | * | |
124 | * Depending on the new interface type it can be slaved to | |
125 | * or become the master of an existing interface. | |
126 | */ | |
127 | switch (data->vif->type) { | |
128 | case NL80211_IFTYPE_STATION: | |
129 | /* | |
2c3e62a1 IP |
130 | * The new interface is a client, so if the one we're iterating |
131 | * is an AP, and the beacon interval of the AP is a multiple or | |
132 | * divisor of the beacon interval of the client, the same TSF | |
133 | * should be used to avoid drift between the new client and | |
134 | * existing AP. The existing AP will get drift updates from the | |
135 | * new client context in this case. | |
8ca151b5 | 136 | */ |
2c3e62a1 IP |
137 | if (vif->type != NL80211_IFTYPE_AP || |
138 | data->preferred_tsf != NUM_TSF_IDS || | |
139 | !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) | |
140 | break; | |
141 | ||
142 | min_bi = min(data->vif->bss_conf.beacon_int, | |
143 | vif->bss_conf.beacon_int); | |
144 | ||
145 | if (!min_bi) | |
146 | break; | |
147 | ||
148 | if ((data->vif->bss_conf.beacon_int - | |
149 | vif->bss_conf.beacon_int) % min_bi == 0) { | |
150 | data->preferred_tsf = mvmvif->tsf_id; | |
151 | return; | |
8ca151b5 JB |
152 | } |
153 | break; | |
2c3e62a1 | 154 | |
8ca151b5 JB |
155 | case NL80211_IFTYPE_AP: |
156 | /* | |
2c3e62a1 IP |
157 | * The new interface is AP/GO, so if its beacon interval is a |
158 | * multiple or a divisor of the beacon interval of an existing | |
159 | * interface, it should get drift updates from an existing | |
160 | * client or use the same TSF as an existing GO. There's no | |
161 | * drift between TSFs internally but if they used different | |
162 | * TSFs then a new client MAC could update one of them and | |
163 | * cause drift that way. | |
8ca151b5 | 164 | */ |
2c3e62a1 IP |
165 | if ((vif->type != NL80211_IFTYPE_AP && |
166 | vif->type != NL80211_IFTYPE_STATION) || | |
167 | data->preferred_tsf != NUM_TSF_IDS || | |
168 | !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) | |
169 | break; | |
170 | ||
171 | min_bi = min(data->vif->bss_conf.beacon_int, | |
172 | vif->bss_conf.beacon_int); | |
173 | ||
174 | if (!min_bi) | |
175 | break; | |
176 | ||
177 | if ((data->vif->bss_conf.beacon_int - | |
178 | vif->bss_conf.beacon_int) % min_bi == 0) { | |
179 | data->preferred_tsf = mvmvif->tsf_id; | |
180 | return; | |
8ca151b5 JB |
181 | } |
182 | break; | |
183 | default: | |
184 | /* | |
185 | * For all other interface types there's no need to | |
186 | * take drift into account. Either they're exclusive | |
187 | * like IBSS and monitor, or we don't care much about | |
188 | * their TSF (like P2P Device), but we won't be able | |
189 | * to share the TSF resource. | |
190 | */ | |
191 | break; | |
192 | } | |
193 | ||
194 | /* | |
195 | * Unless we exited above, we can't share the TSF resource | |
196 | * that the virtual interface we're iterating over is using | |
197 | * with the new one, so clear the available bit and if this | |
198 | * was the preferred one, reset that as well. | |
199 | */ | |
200 | __clear_bit(mvmvif->tsf_id, data->available_tsf_ids); | |
201 | ||
202 | if (data->preferred_tsf == mvmvif->tsf_id) | |
203 | data->preferred_tsf = NUM_TSF_IDS; | |
204 | } | |
205 | ||
6e97b0d2 IP |
206 | static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac, |
207 | struct ieee80211_vif *vif) | |
208 | { | |
209 | struct iwl_mvm_mac_iface_iterator_data *data = _data; | |
210 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
6e97b0d2 IP |
211 | |
212 | /* Iterator may already find the interface being added -- skip it */ | |
213 | if (vif == data->vif) { | |
214 | data->found_vif = true; | |
215 | return; | |
216 | } | |
217 | ||
6e97b0d2 IP |
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 | ||
6e97b0d2 IP |
230 | void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm, |
231 | struct ieee80211_vif *vif) | |
232 | { | |
233 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
234 | struct iwl_mvm_mac_iface_iterator_data data = { | |
235 | .mvm = mvm, | |
236 | .vif = vif, | |
237 | .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, | |
238 | /* no preference yet */ | |
239 | .preferred_tsf = NUM_TSF_IDS, | |
240 | }; | |
241 | ||
242 | ieee80211_iterate_active_interfaces_atomic( | |
243 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
244 | iwl_mvm_mac_tsf_id_iter, &data); | |
245 | ||
246 | if (data.preferred_tsf != NUM_TSF_IDS) | |
247 | mvmvif->tsf_id = data.preferred_tsf; | |
248 | else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids)) | |
249 | mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, | |
250 | NUM_TSF_IDS); | |
251 | } | |
252 | ||
c8f54701 | 253 | int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
254 | { |
255 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
256 | struct iwl_mvm_mac_iface_iterator_data data = { | |
257 | .mvm = mvm, | |
258 | .vif = vif, | |
259 | .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, | |
260 | .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, | |
261 | /* no preference yet */ | |
262 | .preferred_tsf = NUM_TSF_IDS, | |
8ca151b5 JB |
263 | .found_vif = false, |
264 | }; | |
265 | u32 ac; | |
32026e8f | 266 | int ret, i, queue_limit; |
110cf810 | 267 | unsigned long used_hw_queues; |
8ca151b5 | 268 | |
c8f54701 JB |
269 | lockdep_assert_held(&mvm->mutex); |
270 | ||
8ca151b5 JB |
271 | /* |
272 | * Allocate a MAC ID and a TSF for this MAC, along with the queues | |
273 | * and other resources. | |
274 | */ | |
275 | ||
276 | /* | |
277 | * Before the iterator, we start with all MAC IDs and TSFs available. | |
278 | * | |
279 | * During iteration, all MAC IDs are cleared that are in use by other | |
280 | * virtual interfaces, and all TSF IDs are cleared that can't be used | |
281 | * by this new virtual interface because they're used by an interface | |
282 | * that can't share it with the new one. | |
283 | * At the same time, we check if there's a preferred TSF in the case | |
284 | * that we should share it with another interface. | |
285 | */ | |
286 | ||
5023d966 JB |
287 | /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */ |
288 | switch (vif->type) { | |
289 | case NL80211_IFTYPE_ADHOC: | |
290 | break; | |
291 | case NL80211_IFTYPE_STATION: | |
292 | if (!vif->p2p) | |
293 | break; | |
294 | /* fall through */ | |
295 | default: | |
ec8b6885 | 296 | __clear_bit(0, data.available_mac_ids); |
5023d966 | 297 | } |
ec8b6885 | 298 | |
8ca151b5 JB |
299 | ieee80211_iterate_active_interfaces_atomic( |
300 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
301 | iwl_mvm_mac_iface_iterator, &data); | |
302 | ||
303 | /* | |
304 | * In the case we're getting here during resume, it's similar to | |
305 | * firmware restart, and with RESUME_ALL the iterator will find | |
306 | * the vif being added already. | |
307 | * We don't want to reassign any IDs in either case since doing | |
308 | * so would probably assign different IDs (as interfaces aren't | |
309 | * necessarily added in the same order), but the old IDs were | |
310 | * preserved anyway, so skip ID assignment for both resume and | |
311 | * recovery. | |
312 | */ | |
313 | if (data.found_vif) | |
314 | return 0; | |
315 | ||
316 | /* Therefore, in recovery, we can't get here */ | |
fd11bd05 IP |
317 | if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) |
318 | return -EBUSY; | |
8ca151b5 JB |
319 | |
320 | mvmvif->id = find_first_bit(data.available_mac_ids, | |
321 | NUM_MAC_INDEX_DRIVER); | |
322 | if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { | |
323 | IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); | |
324 | ret = -EIO; | |
325 | goto exit_fail; | |
326 | } | |
327 | ||
328 | if (data.preferred_tsf != NUM_TSF_IDS) | |
329 | mvmvif->tsf_id = data.preferred_tsf; | |
330 | else | |
331 | mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, | |
332 | NUM_TSF_IDS); | |
333 | if (mvmvif->tsf_id == NUM_TSF_IDS) { | |
334 | IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); | |
335 | ret = -EIO; | |
336 | goto exit_fail; | |
337 | } | |
338 | ||
339 | mvmvif->color = 0; | |
340 | ||
1e849c93 IP |
341 | INIT_LIST_HEAD(&mvmvif->time_event_data.list); |
342 | mvmvif->time_event_data.id = TE_MAX; | |
343 | ||
8ca151b5 JB |
344 | /* No need to allocate data queues to P2P Device MAC.*/ |
345 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
346 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
347 | vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE; | |
348 | ||
349 | return 0; | |
350 | } | |
351 | ||
c8f54701 JB |
352 | /* |
353 | * queues in mac80211 almost entirely independent of | |
354 | * the ones here - no real limit | |
355 | */ | |
356 | queue_limit = IEEE80211_MAX_QUEUES; | |
32026e8f | 357 | |
24afba76 LK |
358 | /* |
359 | * Find available queues, and allocate them to the ACs. When in | |
360 | * DQA-mode they aren't really used, and this is done only so the | |
361 | * mac80211 ieee80211_check_queues() function won't fail | |
362 | */ | |
8ca151b5 | 363 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
32026e8f | 364 | u8 queue = find_first_zero_bit(&used_hw_queues, queue_limit); |
8ca151b5 | 365 | |
32026e8f | 366 | if (queue >= queue_limit) { |
8ca151b5 JB |
367 | IWL_ERR(mvm, "Failed to allocate queue\n"); |
368 | ret = -EIO; | |
369 | goto exit_fail; | |
370 | } | |
371 | ||
110cf810 | 372 | __set_bit(queue, &used_hw_queues); |
8ca151b5 JB |
373 | vif->hw_queue[ac] = queue; |
374 | } | |
375 | ||
376 | /* Allocate the CAB queue for softAP and GO interfaces */ | |
fc07bd8c SS |
377 | if (vif->type == NL80211_IFTYPE_AP || |
378 | vif->type == NL80211_IFTYPE_ADHOC) { | |
e2af3fab SS |
379 | /* |
380 | * For TVQM this will be overwritten later with the FW assigned | |
381 | * queue value (when queue is enabled). | |
382 | */ | |
c8f54701 | 383 | mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; |
8ca151b5 JB |
384 | } |
385 | ||
0ae98812 SS |
386 | mvmvif->bcast_sta.sta_id = IWL_MVM_INVALID_STA; |
387 | mvmvif->mcast_sta.sta_id = IWL_MVM_INVALID_STA; | |
388 | mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; | |
8ca151b5 | 389 | |
9ee718aa EL |
390 | for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) |
391 | mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC; | |
392 | ||
8ca151b5 JB |
393 | return 0; |
394 | ||
395 | exit_fail: | |
396 | memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); | |
8ca151b5 JB |
397 | return ret; |
398 | } | |
399 | ||
8ca151b5 JB |
400 | static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, |
401 | struct ieee80211_vif *vif, | |
57fbcce3 | 402 | enum nl80211_band band, |
8ca151b5 JB |
403 | u8 *cck_rates, u8 *ofdm_rates) |
404 | { | |
405 | struct ieee80211_supported_band *sband; | |
406 | unsigned long basic = vif->bss_conf.basic_rates; | |
407 | int lowest_present_ofdm = 100; | |
408 | int lowest_present_cck = 100; | |
409 | u8 cck = 0; | |
410 | u8 ofdm = 0; | |
411 | int i; | |
412 | ||
413 | sband = mvm->hw->wiphy->bands[band]; | |
414 | ||
415 | for_each_set_bit(i, &basic, BITS_PER_LONG) { | |
416 | int hw = sband->bitrates[i].hw_value; | |
417 | if (hw >= IWL_FIRST_OFDM_RATE) { | |
418 | ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); | |
419 | if (lowest_present_ofdm > hw) | |
420 | lowest_present_ofdm = hw; | |
421 | } else { | |
422 | BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); | |
423 | ||
424 | cck |= BIT(hw); | |
425 | if (lowest_present_cck > hw) | |
426 | lowest_present_cck = hw; | |
427 | } | |
428 | } | |
429 | ||
430 | /* | |
431 | * Now we've got the basic rates as bitmaps in the ofdm and cck | |
432 | * variables. This isn't sufficient though, as there might not | |
433 | * be all the right rates in the bitmap. E.g. if the only basic | |
434 | * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps | |
435 | * and 6 Mbps because the 802.11-2007 standard says in 9.6: | |
436 | * | |
437 | * [...] a STA responding to a received frame shall transmit | |
438 | * its Control Response frame [...] at the highest rate in the | |
439 | * BSSBasicRateSet parameter that is less than or equal to the | |
440 | * rate of the immediately previous frame in the frame exchange | |
441 | * sequence ([...]) and that is of the same modulation class | |
442 | * ([...]) as the received frame. If no rate contained in the | |
443 | * BSSBasicRateSet parameter meets these conditions, then the | |
444 | * control frame sent in response to a received frame shall be | |
445 | * transmitted at the highest mandatory rate of the PHY that is | |
446 | * less than or equal to the rate of the received frame, and | |
447 | * that is of the same modulation class as the received frame. | |
448 | * | |
449 | * As a consequence, we need to add all mandatory rates that are | |
450 | * lower than all of the basic rates to these bitmaps. | |
451 | */ | |
452 | ||
453 | if (IWL_RATE_24M_INDEX < lowest_present_ofdm) | |
454 | ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; | |
455 | if (IWL_RATE_12M_INDEX < lowest_present_ofdm) | |
456 | ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; | |
457 | /* 6M already there or needed so always add */ | |
458 | ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; | |
459 | ||
460 | /* | |
461 | * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. | |
462 | * Note, however: | |
463 | * - if no CCK rates are basic, it must be ERP since there must | |
464 | * be some basic rates at all, so they're OFDM => ERP PHY | |
465 | * (or we're in 5 GHz, and the cck bitmap will never be used) | |
466 | * - if 11M is a basic rate, it must be ERP as well, so add 5.5M | |
467 | * - if 5.5M is basic, 1M and 2M are mandatory | |
468 | * - if 2M is basic, 1M is mandatory | |
469 | * - if 1M is basic, that's the only valid ACK rate. | |
470 | * As a consequence, it's not as complicated as it sounds, just add | |
471 | * any lower rates to the ACK rate bitmap. | |
472 | */ | |
473 | if (IWL_RATE_11M_INDEX < lowest_present_cck) | |
474 | cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; | |
475 | if (IWL_RATE_5M_INDEX < lowest_present_cck) | |
476 | cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; | |
477 | if (IWL_RATE_2M_INDEX < lowest_present_cck) | |
478 | cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; | |
479 | /* 1M already there or needed so always add */ | |
480 | cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; | |
481 | ||
482 | *cck_rates = cck; | |
483 | *ofdm_rates = ofdm; | |
484 | } | |
485 | ||
8a5e3660 AA |
486 | static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm, |
487 | struct ieee80211_vif *vif, | |
488 | struct iwl_mac_ctx_cmd *cmd) | |
489 | { | |
490 | /* for both sta and ap, ht_operation_mode hold the protection_mode */ | |
491 | u8 protection_mode = vif->bss_conf.ht_operation_mode & | |
492 | IEEE80211_HT_OP_MODE_PROTECTION; | |
493 | /* The fw does not distinguish between ht and fat */ | |
494 | u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT; | |
495 | ||
496 | IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode); | |
497 | /* | |
498 | * See section 9.23.3.1 of IEEE 80211-2012. | |
499 | * Nongreenfield HT STAs Present is not supported. | |
500 | */ | |
501 | switch (protection_mode) { | |
502 | case IEEE80211_HT_OP_MODE_PROTECTION_NONE: | |
503 | break; | |
504 | case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: | |
505 | case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: | |
506 | cmd->protection_flags |= cpu_to_le32(ht_flag); | |
507 | break; | |
508 | case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: | |
509 | /* Protect when channel wider than 20MHz */ | |
510 | if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) | |
511 | cmd->protection_flags |= cpu_to_le32(ht_flag); | |
512 | break; | |
513 | default: | |
514 | IWL_ERR(mvm, "Illegal protection mode %d\n", | |
515 | protection_mode); | |
516 | break; | |
517 | } | |
518 | } | |
519 | ||
8ca151b5 JB |
520 | static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, |
521 | struct ieee80211_vif *vif, | |
522 | struct iwl_mac_ctx_cmd *cmd, | |
3dfd3a97 | 523 | const u8 *bssid_override, |
8ca151b5 JB |
524 | u32 action) |
525 | { | |
526 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
527 | struct ieee80211_chanctx_conf *chanctx; | |
8a5e3660 AA |
528 | bool ht_enabled = !!(vif->bss_conf.ht_operation_mode & |
529 | IEEE80211_HT_OP_MODE_PROTECTION); | |
8ca151b5 | 530 | u8 cck_ack_rates, ofdm_ack_rates; |
3dfd3a97 | 531 | const u8 *bssid = bssid_override ?: vif->bss_conf.bssid; |
8ca151b5 JB |
532 | int i; |
533 | ||
534 | cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
535 | mvmvif->color)); | |
536 | cmd->action = cpu_to_le32(action); | |
537 | ||
538 | switch (vif->type) { | |
539 | case NL80211_IFTYPE_STATION: | |
540 | if (vif->p2p) | |
541 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA); | |
542 | else | |
543 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA); | |
544 | break; | |
545 | case NL80211_IFTYPE_AP: | |
546 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO); | |
547 | break; | |
548 | case NL80211_IFTYPE_MONITOR: | |
549 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER); | |
550 | break; | |
551 | case NL80211_IFTYPE_P2P_DEVICE: | |
552 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE); | |
553 | break; | |
554 | case NL80211_IFTYPE_ADHOC: | |
555 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS); | |
556 | break; | |
557 | default: | |
558 | WARN_ON_ONCE(1); | |
559 | } | |
560 | ||
561 | cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); | |
562 | ||
563 | memcpy(cmd->node_addr, vif->addr, ETH_ALEN); | |
3dfd3a97 JB |
564 | |
565 | if (bssid) | |
566 | memcpy(cmd->bssid_addr, bssid, ETH_ALEN); | |
8ca151b5 JB |
567 | else |
568 | eth_broadcast_addr(cmd->bssid_addr); | |
569 | ||
570 | rcu_read_lock(); | |
571 | chanctx = rcu_dereference(vif->chanctx_conf); | |
572 | iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band | |
57fbcce3 | 573 | : NL80211_BAND_2GHZ, |
8ca151b5 JB |
574 | &cck_ack_rates, &ofdm_ack_rates); |
575 | rcu_read_unlock(); | |
576 | ||
577 | cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates); | |
578 | cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); | |
579 | ||
580 | cmd->cck_short_preamble = | |
581 | cpu_to_le32(vif->bss_conf.use_short_preamble ? | |
582 | MAC_FLG_SHORT_PREAMBLE : 0); | |
583 | cmd->short_slot = | |
584 | cpu_to_le32(vif->bss_conf.use_short_slot ? | |
585 | MAC_FLG_SHORT_SLOT : 0); | |
586 | ||
bd6f5bd7 AB |
587 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP); |
588 | ||
3dd94794 | 589 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
cf6c6ea3 | 590 | u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i); |
3dd94794 EG |
591 | |
592 | cmd->ac[txf].cw_min = | |
593 | cpu_to_le16(mvmvif->queue_params[i].cw_min); | |
594 | cmd->ac[txf].cw_max = | |
595 | cpu_to_le16(mvmvif->queue_params[i].cw_max); | |
596 | cmd->ac[txf].edca_txop = | |
8ca151b5 | 597 | cpu_to_le16(mvmvif->queue_params[i].txop * 32); |
3dd94794 EG |
598 | cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs; |
599 | cmd->ac[txf].fifos_mask = BIT(txf); | |
8ca151b5 JB |
600 | } |
601 | ||
602 | if (vif->bss_conf.qos) | |
603 | cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); | |
604 | ||
dc271ee0 | 605 | if (vif->bss_conf.use_cts_prot) |
cc7ee2ba | 606 | cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); |
dc271ee0 | 607 | |
8a5e3660 AA |
608 | IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", |
609 | vif->bss_conf.use_cts_prot, | |
610 | vif->bss_conf.ht_operation_mode); | |
611 | if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) | |
8ca151b5 | 612 | cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); |
8a5e3660 AA |
613 | if (ht_enabled) |
614 | iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd); | |
8ca151b5 JB |
615 | } |
616 | ||
617 | static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, | |
618 | struct iwl_mac_ctx_cmd *cmd) | |
619 | { | |
a1022927 | 620 | int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, |
8ca151b5 JB |
621 | sizeof(*cmd), cmd); |
622 | if (ret) | |
623 | IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n", | |
624 | le32_to_cpu(cmd->action), ret); | |
625 | return ret; | |
626 | } | |
627 | ||
cf52023c LC |
628 | static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm, |
629 | struct ieee80211_vif *vif, | |
3dfd3a97 JB |
630 | u32 action, bool force_assoc_off, |
631 | const u8 *bssid_override) | |
8ca151b5 | 632 | { |
cf52023c LC |
633 | struct iwl_mac_ctx_cmd cmd = {}; |
634 | struct iwl_mac_data_sta *ctxt_sta; | |
635 | ||
636 | WARN_ON(vif->type != NL80211_IFTYPE_STATION); | |
637 | ||
638 | /* Fill the common data for all mac context types */ | |
3dfd3a97 | 639 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action); |
cf52023c LC |
640 | |
641 | if (vif->p2p) { | |
642 | struct ieee80211_p2p_noa_attr *noa = | |
643 | &vif->bss_conf.p2p_noa_attr; | |
644 | ||
645 | cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow & | |
646 | IEEE80211_P2P_OPPPS_CTWINDOW_MASK); | |
647 | ctxt_sta = &cmd.p2p_sta.sta; | |
648 | } else { | |
cf52023c LC |
649 | ctxt_sta = &cmd.sta; |
650 | } | |
651 | ||
210a544e | 652 | /* We need the dtim_period to set the MAC as associated */ |
ba283927 AB |
653 | if (vif->bss_conf.assoc && vif->bss_conf.dtim_period && |
654 | !force_assoc_off) { | |
d2931bbd JB |
655 | u32 dtim_offs; |
656 | ||
657 | /* | |
658 | * The DTIM count counts down, so when it is N that means N | |
659 | * more beacon intervals happen until the DTIM TBTT. Therefore | |
660 | * add this to the current time. If that ends up being in the | |
661 | * future, the firmware will handle it. | |
662 | * | |
663 | * Also note that the system_timestamp (which we get here as | |
664 | * "sync_device_ts") and TSF timestamp aren't at exactly the | |
665 | * same offset in the frame -- the TSF is at the first symbol | |
666 | * of the TSF, the system timestamp is at signal acquisition | |
667 | * time. This means there's an offset between them of at most | |
668 | * a few hundred microseconds (24 * 8 bits + PLCP time gives | |
669 | * 384us in the longest case), this is currently not relevant | |
670 | * as the firmware wakes up around 2ms before the TBTT. | |
671 | */ | |
672 | dtim_offs = vif->bss_conf.sync_dtim_count * | |
673 | vif->bss_conf.beacon_int; | |
674 | /* convert TU to usecs */ | |
675 | dtim_offs *= 1024; | |
676 | ||
677 | ctxt_sta->dtim_tsf = | |
678 | cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs); | |
679 | ctxt_sta->dtim_time = | |
680 | cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs); | |
b5669727 AS |
681 | ctxt_sta->assoc_beacon_arrive_time = |
682 | cpu_to_le32(vif->bss_conf.sync_device_ts); | |
d2931bbd JB |
683 | |
684 | IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", | |
685 | le64_to_cpu(ctxt_sta->dtim_tsf), | |
686 | le32_to_cpu(ctxt_sta->dtim_time), | |
687 | dtim_offs); | |
688 | ||
210a544e | 689 | ctxt_sta->is_assoc = cpu_to_le32(1); |
d2931bbd | 690 | } else { |
210a544e | 691 | ctxt_sta->is_assoc = cpu_to_le32(0); |
7c8b3bc6 LC |
692 | |
693 | /* Allow beacons to pass through as long as we are not | |
694 | * associated, or we do not have dtim period information. | |
695 | */ | |
696 | cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); | |
d2931bbd | 697 | } |
8ca151b5 JB |
698 | |
699 | ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
8ca151b5 JB |
700 | ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * |
701 | vif->bss_conf.dtim_period); | |
8ca151b5 JB |
702 | |
703 | ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); | |
704 | ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid); | |
8ca151b5 | 705 | |
effd1929 AO |
706 | if (vif->probe_req_reg && vif->bss_conf.assoc && vif->p2p) |
707 | cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); | |
708 | ||
230ba6c5 | 709 | if (vif->bss_conf.assoc && vif->bss_conf.he_support && |
d91d9b94 | 710 | !iwlwifi_mod_params.disable_11ax) { |
514c3069 | 711 | cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX); |
866a6a85 EG |
712 | if (vif->bss_conf.twt_requester) |
713 | ctxt_sta->data_policy |= cpu_to_le32(TWT_SUPPORTED); | |
d91d9b94 EG |
714 | } |
715 | ||
514c3069 | 716 | |
8ca151b5 JB |
717 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); |
718 | } | |
719 | ||
720 | static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, | |
721 | struct ieee80211_vif *vif, | |
722 | u32 action) | |
723 | { | |
724 | struct iwl_mac_ctx_cmd cmd = {}; | |
b13f43a4 | 725 | u32 tfd_queue_msk = BIT(mvm->snif_queue); |
c8f54701 | 726 | int ret; |
8ca151b5 JB |
727 | |
728 | WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); | |
729 | ||
3dfd3a97 | 730 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
53585495 JB |
731 | |
732 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | | |
733 | MAC_FILTER_IN_CONTROL_AND_MGMT | | |
734 | MAC_FILTER_IN_BEACON | | |
fb8b8ee1 JB |
735 | MAC_FILTER_IN_PROBE_REQUEST | |
736 | MAC_FILTER_IN_CRC32); | |
30686bf7 | 737 | ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS); |
53585495 | 738 | |
0e39eb03 CRI |
739 | /* Allocate sniffer station */ |
740 | ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk, | |
ced19f26 | 741 | vif->type, IWL_STA_GENERAL_PURPOSE); |
0e39eb03 CRI |
742 | if (ret) |
743 | return ret; | |
744 | ||
8ca151b5 JB |
745 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); |
746 | } | |
747 | ||
5023d966 JB |
748 | static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, |
749 | struct ieee80211_vif *vif, | |
750 | u32 action) | |
751 | { | |
752 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
753 | struct iwl_mac_ctx_cmd cmd = {}; | |
754 | ||
755 | WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); | |
756 | ||
3dfd3a97 | 757 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
5023d966 JB |
758 | |
759 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | | |
760 | MAC_FILTER_IN_PROBE_REQUEST); | |
761 | ||
762 | /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */ | |
763 | cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
5023d966 JB |
764 | |
765 | /* TODO: Assumes that the beacon id == mac context id */ | |
766 | cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id); | |
767 | ||
768 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
769 | } | |
770 | ||
8ca151b5 JB |
771 | struct iwl_mvm_go_iterator_data { |
772 | bool go_active; | |
773 | }; | |
774 | ||
775 | static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) | |
776 | { | |
777 | struct iwl_mvm_go_iterator_data *data = _data; | |
778 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
779 | ||
5023d966 JB |
780 | if (vif->type == NL80211_IFTYPE_AP && vif->p2p && |
781 | mvmvif->ap_ibss_active) | |
8ca151b5 JB |
782 | data->go_active = true; |
783 | } | |
784 | ||
785 | static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, | |
786 | struct ieee80211_vif *vif, | |
787 | u32 action) | |
788 | { | |
789 | struct iwl_mac_ctx_cmd cmd = {}; | |
790 | struct iwl_mvm_go_iterator_data data = {}; | |
791 | ||
792 | WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); | |
793 | ||
3dfd3a97 | 794 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
8ca151b5 | 795 | |
1dcd15ee IP |
796 | /* Override the filter flags to accept only probe requests */ |
797 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); | |
8ca151b5 JB |
798 | |
799 | /* | |
800 | * This flag should be set to true when the P2P Device is | |
801 | * discoverable and there is at least another active P2P GO. Settings | |
802 | * this flag will allow the P2P Device to be discoverable on other | |
803 | * channels in addition to its listen channel. | |
804 | * Note that this flag should not be set in other cases as it opens the | |
805 | * Rx filters on all MAC and increases the number of interrupts. | |
806 | */ | |
807 | ieee80211_iterate_active_interfaces_atomic( | |
808 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
809 | iwl_mvm_go_iterator, &data); | |
810 | ||
811 | cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0); | |
812 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
813 | } | |
814 | ||
815 | static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, | |
8364fbb4 | 816 | __le32 *tim_index, __le32 *tim_size, |
8ca151b5 JB |
817 | u8 *beacon, u32 frame_size) |
818 | { | |
819 | u32 tim_idx; | |
820 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; | |
821 | ||
822 | /* The index is relative to frame start but we start looking at the | |
823 | * variable-length part of the beacon. */ | |
824 | tim_idx = mgmt->u.beacon.variable - beacon; | |
825 | ||
826 | /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ | |
827 | while ((tim_idx < (frame_size - 2)) && | |
828 | (beacon[tim_idx] != WLAN_EID_TIM)) | |
829 | tim_idx += beacon[tim_idx+1] + 2; | |
830 | ||
831 | /* If TIM field was found, set variables */ | |
832 | if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { | |
8364fbb4 SS |
833 | *tim_index = cpu_to_le32(tim_idx); |
834 | *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]); | |
8ca151b5 JB |
835 | } else { |
836 | IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); | |
837 | } | |
838 | } | |
839 | ||
d3a108a4 AO |
840 | static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size) |
841 | { | |
842 | struct ieee80211_mgmt *mgmt = (void *)beacon; | |
843 | const u8 *ie; | |
844 | ||
845 | if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon))) | |
846 | return 0; | |
847 | ||
848 | frame_size -= mgmt->u.beacon.variable - beacon; | |
849 | ||
850 | ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size); | |
851 | if (!ie) | |
852 | return 0; | |
853 | ||
854 | return ie - beacon; | |
855 | } | |
856 | ||
6ca33f8b HD |
857 | static u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info *info, |
858 | struct ieee80211_vif *vif) | |
859 | { | |
860 | u8 rate; | |
861 | ||
862 | if (info->band == NL80211_BAND_5GHZ || vif->p2p) | |
863 | rate = IWL_FIRST_OFDM_RATE; | |
864 | else | |
865 | rate = IWL_FIRST_CCK_RATE; | |
866 | ||
867 | return rate; | |
868 | } | |
869 | ||
09856582 LC |
870 | static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm, |
871 | struct ieee80211_vif *vif, | |
872 | struct sk_buff *beacon, | |
873 | struct iwl_tx_cmd *tx) | |
8ca151b5 JB |
874 | { |
875 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
8ca151b5 | 876 | struct ieee80211_tx_info *info; |
6ca33f8b HD |
877 | u8 rate; |
878 | u32 tx_flags; | |
8ca151b5 | 879 | |
75f6b9b6 | 880 | info = IEEE80211_SKB_CB(beacon); |
8ca151b5 JB |
881 | |
882 | /* Set up TX command fields */ | |
09856582 LC |
883 | tx->len = cpu_to_le16((u16)beacon->len); |
884 | tx->sta_id = mvmvif->bcast_sta.sta_id; | |
885 | tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); | |
75f6b9b6 EG |
886 | tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF; |
887 | tx_flags |= | |
888 | iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) << | |
889 | TX_CMD_FLG_BT_PRIO_POS; | |
09856582 | 890 | tx->tx_flags = cpu_to_le32(tx_flags); |
8ca151b5 | 891 | |
1e3c3c35 | 892 | if (!fw_has_capa(&mvm->fw->ucode_capa, |
656fca00 AS |
893 | IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) |
894 | iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); | |
8ca151b5 | 895 | |
09856582 | 896 | tx->rate_n_flags = |
8ca151b5 JB |
897 | cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << |
898 | RATE_MCS_ANT_POS); | |
899 | ||
6ca33f8b | 900 | rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif); |
8ca151b5 | 901 | |
09856582 | 902 | tx->rate_n_flags |= cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate)); |
6ca33f8b HD |
903 | if (rate == IWL_FIRST_CCK_RATE) |
904 | tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK); | |
905 | ||
09856582 LC |
906 | } |
907 | ||
908 | static int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm, | |
909 | struct sk_buff *beacon, | |
910 | void *data, int len) | |
911 | { | |
912 | struct iwl_host_cmd cmd = { | |
913 | .id = BEACON_TEMPLATE_CMD, | |
914 | .flags = CMD_ASYNC, | |
915 | }; | |
8ca151b5 | 916 | |
09856582 LC |
917 | cmd.len[0] = len; |
918 | cmd.data[0] = data; | |
8ca151b5 | 919 | cmd.dataflags[0] = 0; |
09856582 | 920 | cmd.len[1] = beacon->len; |
8ca151b5 JB |
921 | cmd.data[1] = beacon->data; |
922 | cmd.dataflags[1] = IWL_HCMD_DFL_DUP; | |
923 | ||
924 | return iwl_mvm_send_cmd(mvm, &cmd); | |
925 | } | |
926 | ||
09856582 LC |
927 | static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm, |
928 | struct ieee80211_vif *vif, | |
929 | struct sk_buff *beacon) | |
930 | { | |
931 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
932 | struct iwl_mac_beacon_cmd_v6 beacon_cmd = {}; | |
933 | ||
934 | iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); | |
935 | ||
936 | beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); | |
937 | ||
938 | if (vif->type == NL80211_IFTYPE_AP) | |
939 | iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, | |
940 | &beacon_cmd.tim_size, | |
941 | beacon->data, beacon->len); | |
942 | ||
943 | return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, | |
944 | sizeof(beacon_cmd)); | |
945 | } | |
946 | ||
947 | static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm, | |
948 | struct ieee80211_vif *vif, | |
949 | struct sk_buff *beacon) | |
950 | { | |
951 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
952 | struct iwl_mac_beacon_cmd_v7 beacon_cmd = {}; | |
953 | ||
954 | iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); | |
955 | ||
956 | beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); | |
957 | ||
958 | if (vif->type == NL80211_IFTYPE_AP) | |
959 | iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, | |
960 | &beacon_cmd.tim_size, | |
961 | beacon->data, beacon->len); | |
962 | ||
963 | beacon_cmd.csa_offset = | |
964 | cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, | |
965 | WLAN_EID_CHANNEL_SWITCH, | |
966 | beacon->len)); | |
967 | beacon_cmd.ecsa_offset = | |
968 | cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, | |
969 | WLAN_EID_EXT_CHANSWITCH_ANN, | |
970 | beacon->len)); | |
971 | ||
972 | return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, | |
973 | sizeof(beacon_cmd)); | |
974 | } | |
975 | ||
6ca33f8b | 976 | static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm, |
09856582 LC |
977 | struct ieee80211_vif *vif, |
978 | struct sk_buff *beacon) | |
979 | { | |
980 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
6ca33f8b | 981 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon); |
09856582 | 982 | struct iwl_mac_beacon_cmd beacon_cmd = {}; |
6ca33f8b HD |
983 | u8 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif); |
984 | u16 flags; | |
985 | ||
986 | flags = iwl_mvm_mac80211_idx_to_hwrate(rate); | |
09856582 | 987 | |
6ca33f8b HD |
988 | if (rate == IWL_FIRST_CCK_RATE) |
989 | flags |= IWL_MAC_BEACON_CCK; | |
990 | ||
991 | beacon_cmd.flags = cpu_to_le16(flags); | |
09856582 LC |
992 | beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len); |
993 | beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); | |
994 | ||
995 | if (vif->type == NL80211_IFTYPE_AP) | |
6ca33f8b | 996 | iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, |
09856582 LC |
997 | &beacon_cmd.tim_size, |
998 | beacon->data, beacon->len); | |
999 | ||
1000 | beacon_cmd.csa_offset = | |
1001 | cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, | |
1002 | WLAN_EID_CHANNEL_SWITCH, | |
1003 | beacon->len)); | |
1004 | beacon_cmd.ecsa_offset = | |
1005 | cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, | |
1006 | WLAN_EID_EXT_CHANSWITCH_ANN, | |
1007 | beacon->len)); | |
1008 | ||
1009 | return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, | |
1010 | sizeof(beacon_cmd)); | |
1011 | } | |
1012 | ||
1013 | static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, | |
1014 | struct ieee80211_vif *vif, | |
1015 | struct sk_buff *beacon) | |
1016 | { | |
1017 | if (WARN_ON(!beacon)) | |
1018 | return -EINVAL; | |
1019 | ||
1020 | if (!fw_has_capa(&mvm->fw->ucode_capa, | |
1021 | IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD)) | |
1022 | return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon); | |
1023 | ||
6ca33f8b HD |
1024 | if (fw_has_api(&mvm->fw->ucode_capa, |
1025 | IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE)) | |
1026 | return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon); | |
09856582 | 1027 | |
6ca33f8b | 1028 | return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon); |
09856582 LC |
1029 | } |
1030 | ||
5023d966 | 1031 | /* The beacon template for the AP/GO/IBSS has changed and needs update */ |
8ca151b5 JB |
1032 | int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, |
1033 | struct ieee80211_vif *vif) | |
1034 | { | |
1035 | struct sk_buff *beacon; | |
1036 | int ret; | |
1037 | ||
5023d966 JB |
1038 | WARN_ON(vif->type != NL80211_IFTYPE_AP && |
1039 | vif->type != NL80211_IFTYPE_ADHOC); | |
8ca151b5 | 1040 | |
fe887665 | 1041 | beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL); |
8ca151b5 JB |
1042 | if (!beacon) |
1043 | return -ENOMEM; | |
1044 | ||
1045 | ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon); | |
1046 | dev_kfree_skb(beacon); | |
1047 | return ret; | |
1048 | } | |
1049 | ||
3a3cb92e IP |
1050 | struct iwl_mvm_mac_ap_iterator_data { |
1051 | struct iwl_mvm *mvm; | |
1052 | struct ieee80211_vif *vif; | |
1053 | u32 beacon_device_ts; | |
1054 | u16 beacon_int; | |
1055 | }; | |
1056 | ||
1057 | /* Find the beacon_device_ts and beacon_int for a managed interface */ | |
1058 | static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, | |
1059 | struct ieee80211_vif *vif) | |
1060 | { | |
1061 | struct iwl_mvm_mac_ap_iterator_data *data = _data; | |
1062 | ||
1063 | if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc) | |
1064 | return; | |
1065 | ||
1066 | /* Station client has higher priority over P2P client*/ | |
1067 | if (vif->p2p && data->beacon_device_ts) | |
1068 | return; | |
1069 | ||
1070 | data->beacon_device_ts = vif->bss_conf.sync_device_ts; | |
1071 | data->beacon_int = vif->bss_conf.beacon_int; | |
1072 | } | |
1073 | ||
8ca151b5 JB |
1074 | /* |
1075 | * Fill the specific data for mac context of type AP of P2P GO | |
1076 | */ | |
1077 | static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, | |
1078 | struct ieee80211_vif *vif, | |
186cd49a | 1079 | struct iwl_mac_ctx_cmd *cmd, |
506a81e6 JB |
1080 | struct iwl_mac_data_ap *ctxt_ap, |
1081 | bool add) | |
8ca151b5 JB |
1082 | { |
1083 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
3a3cb92e IP |
1084 | struct iwl_mvm_mac_ap_iterator_data data = { |
1085 | .mvm = mvm, | |
1086 | .vif = vif, | |
1087 | .beacon_device_ts = 0 | |
1088 | }; | |
8ca151b5 | 1089 | |
186cd49a JB |
1090 | /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ |
1091 | cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST); | |
1092 | ||
1093 | /* | |
1094 | * in AP mode, pass probe requests and beacons from other APs | |
1095 | * (needed for ht protection); when there're no any associated | |
1096 | * station don't ask FW to pass beacons to prevent unnecessary | |
1097 | * wake-ups. | |
1098 | */ | |
1099 | cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); | |
1100 | if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) { | |
1101 | cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); | |
1102 | IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n"); | |
1103 | } else { | |
1104 | IWL_DEBUG_HC(mvm, "No need to receive beacons\n"); | |
1105 | } | |
1106 | ||
3b5ee8dd ST |
1107 | if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) |
1108 | cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX); | |
1109 | ||
8ca151b5 | 1110 | ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); |
8ca151b5 JB |
1111 | ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * |
1112 | vif->bss_conf.dtim_period); | |
8ca151b5 | 1113 | |
ced19f26 SS |
1114 | if (!fw_has_api(&mvm->fw->ucode_capa, |
1115 | IWL_UCODE_TLV_API_STA_TYPE)) | |
cfbc6c4c | 1116 | ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->cab_queue); |
8ca151b5 | 1117 | |
506a81e6 | 1118 | /* |
3a3cb92e | 1119 | * Only set the beacon time when the MAC is being added, when we |
506a81e6 JB |
1120 | * just modify the MAC then we should keep the time -- the firmware |
1121 | * can otherwise have a "jumping" TBTT. | |
1122 | */ | |
3a3cb92e IP |
1123 | if (add) { |
1124 | /* | |
1125 | * If there is a station/P2P client interface which is | |
1126 | * associated, set the AP's TBTT far enough from the station's | |
1127 | * TBTT. Otherwise, set it to the current system time | |
1128 | */ | |
1129 | ieee80211_iterate_active_interfaces_atomic( | |
1130 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
1131 | iwl_mvm_mac_ap_iterator, &data); | |
1132 | ||
1133 | if (data.beacon_device_ts) { | |
9f8f8ca5 | 1134 | u32 rand = (prandom_u32() % (64 - 36)) + 36; |
3a3cb92e IP |
1135 | mvmvif->ap_beacon_time = data.beacon_device_ts + |
1136 | ieee80211_tu_to_usec(data.beacon_int * rand / | |
1137 | 100); | |
1138 | } else { | |
1139 | mvmvif->ap_beacon_time = | |
1140 | iwl_read_prph(mvm->trans, | |
1141 | DEVICE_SYSTEM_TIME_REG); | |
1142 | } | |
1143 | } | |
506a81e6 JB |
1144 | |
1145 | ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); | |
506a81e6 | 1146 | ctxt_ap->beacon_tsf = 0; /* unused */ |
8ca151b5 JB |
1147 | |
1148 | /* TODO: Assume that the beacon id == mac context id */ | |
1149 | ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); | |
1150 | } | |
1151 | ||
f82c8339 IP |
1152 | static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, |
1153 | struct ieee80211_vif *vif, | |
1154 | u32 action) | |
8ca151b5 JB |
1155 | { |
1156 | struct iwl_mac_ctx_cmd cmd = {}; | |
1157 | ||
1158 | WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); | |
1159 | ||
1160 | /* Fill the common data for all mac context types */ | |
3dfd3a97 | 1161 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
8ca151b5 JB |
1162 | |
1163 | /* Fill the data specific for ap mode */ | |
186cd49a | 1164 | iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap, |
506a81e6 | 1165 | action == FW_CTXT_ACTION_ADD); |
8ca151b5 JB |
1166 | |
1167 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
1168 | } | |
1169 | ||
1170 | static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, | |
1171 | struct ieee80211_vif *vif, | |
1172 | u32 action) | |
1173 | { | |
1174 | struct iwl_mac_ctx_cmd cmd = {}; | |
67baf663 | 1175 | struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; |
8ca151b5 JB |
1176 | |
1177 | WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); | |
1178 | ||
1179 | /* Fill the common data for all mac context types */ | |
3dfd3a97 | 1180 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
8ca151b5 JB |
1181 | |
1182 | /* Fill the data specific for GO mode */ | |
186cd49a | 1183 | iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap, |
506a81e6 | 1184 | action == FW_CTXT_ACTION_ADD); |
8ca151b5 | 1185 | |
67baf663 JD |
1186 | cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & |
1187 | IEEE80211_P2P_OPPPS_CTWINDOW_MASK); | |
1188 | cmd.go.opp_ps_enabled = | |
1189 | cpu_to_le32(!!(noa->oppps_ctwindow & | |
1190 | IEEE80211_P2P_OPPPS_ENABLE_BIT)); | |
8ca151b5 JB |
1191 | |
1192 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
1193 | } | |
1194 | ||
1195 | static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
3dfd3a97 JB |
1196 | u32 action, bool force_assoc_off, |
1197 | const u8 *bssid_override) | |
8ca151b5 JB |
1198 | { |
1199 | switch (vif->type) { | |
1200 | case NL80211_IFTYPE_STATION: | |
cf52023c | 1201 | return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action, |
3dfd3a97 JB |
1202 | force_assoc_off, |
1203 | bssid_override); | |
8ca151b5 JB |
1204 | break; |
1205 | case NL80211_IFTYPE_AP: | |
1206 | if (!vif->p2p) | |
1207 | return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); | |
1208 | else | |
1209 | return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); | |
1210 | break; | |
1211 | case NL80211_IFTYPE_MONITOR: | |
1212 | return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); | |
1213 | case NL80211_IFTYPE_P2P_DEVICE: | |
1214 | return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); | |
5023d966 JB |
1215 | case NL80211_IFTYPE_ADHOC: |
1216 | return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); | |
8ca151b5 JB |
1217 | default: |
1218 | break; | |
1219 | } | |
1220 | ||
1221 | return -EOPNOTSUPP; | |
1222 | } | |
1223 | ||
1224 | int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1225 | { | |
1226 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1227 | int ret; | |
1228 | ||
1229 | if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", | |
1230 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1231 | return -EIO; | |
1232 | ||
bca49d9a | 1233 | ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD, |
3dfd3a97 | 1234 | true, NULL); |
8ca151b5 JB |
1235 | if (ret) |
1236 | return ret; | |
1237 | ||
6d9d32b8 JB |
1238 | /* will only do anything at resume from D3 time */ |
1239 | iwl_mvm_set_last_nonqos_seq(mvm, vif); | |
1240 | ||
8ca151b5 JB |
1241 | mvmvif->uploaded = true; |
1242 | return 0; | |
1243 | } | |
1244 | ||
bca49d9a | 1245 | int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
3dfd3a97 | 1246 | bool force_assoc_off, const u8 *bssid_override) |
8ca151b5 JB |
1247 | { |
1248 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1249 | ||
1250 | if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", | |
1251 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1252 | return -EIO; | |
1253 | ||
bca49d9a | 1254 | return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY, |
3dfd3a97 | 1255 | force_assoc_off, bssid_override); |
8ca151b5 JB |
1256 | } |
1257 | ||
1258 | int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1259 | { | |
1260 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1261 | struct iwl_mac_ctx_cmd cmd; | |
1262 | int ret; | |
1263 | ||
1264 | if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", | |
1265 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1266 | return -EIO; | |
1267 | ||
1268 | memset(&cmd, 0, sizeof(cmd)); | |
1269 | ||
1270 | cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
1271 | mvmvif->color)); | |
1272 | cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); | |
1273 | ||
a1022927 | 1274 | ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, |
8ca151b5 JB |
1275 | sizeof(cmd), &cmd); |
1276 | if (ret) { | |
1277 | IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret); | |
1278 | return ret; | |
1279 | } | |
1280 | ||
1281 | mvmvif->uploaded = false; | |
fb8b8ee1 | 1282 | |
0e39eb03 | 1283 | if (vif->type == NL80211_IFTYPE_MONITOR) { |
30686bf7 | 1284 | __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags); |
0e39eb03 CRI |
1285 | iwl_mvm_dealloc_snif_sta(mvm); |
1286 | } | |
fb8b8ee1 | 1287 | |
8ca151b5 JB |
1288 | return 0; |
1289 | } | |
571765c8 | 1290 | |
7f0a7c67 | 1291 | static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm, |
7ef0aab6 AO |
1292 | struct ieee80211_vif *csa_vif, u32 gp2, |
1293 | bool tx_success) | |
7f0a7c67 AO |
1294 | { |
1295 | struct iwl_mvm_vif *mvmvif = | |
1296 | iwl_mvm_vif_from_mac80211(csa_vif); | |
1297 | ||
7ef0aab6 AO |
1298 | /* Don't start to countdown from a failed beacon */ |
1299 | if (!tx_success && !mvmvif->csa_countdown) | |
1300 | return; | |
1301 | ||
1302 | mvmvif->csa_countdown = true; | |
1303 | ||
7f0a7c67 AO |
1304 | if (!ieee80211_csa_is_complete(csa_vif)) { |
1305 | int c = ieee80211_csa_update_counter(csa_vif); | |
1306 | ||
1307 | iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif); | |
1308 | if (csa_vif->p2p && | |
7ef0aab6 AO |
1309 | !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 && |
1310 | tx_success) { | |
7f0a7c67 AO |
1311 | u32 rel_time = (c + 1) * |
1312 | csa_vif->bss_conf.beacon_int - | |
f991e17b | 1313 | IWL_MVM_CHANNEL_SWITCH_TIME_GO; |
7f0a7c67 AO |
1314 | u32 apply_time = gp2 + rel_time * 1024; |
1315 | ||
f991e17b LC |
1316 | iwl_mvm_schedule_csa_period(mvm, csa_vif, |
1317 | IWL_MVM_CHANNEL_SWITCH_TIME_GO - | |
1318 | IWL_MVM_CHANNEL_SWITCH_MARGIN, | |
1319 | apply_time); | |
7f0a7c67 AO |
1320 | } |
1321 | } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) { | |
1322 | /* we don't have CSA NoA scheduled yet, switch now */ | |
1323 | ieee80211_csa_finish(csa_vif); | |
1324 | RCU_INIT_POINTER(mvm->csa_vif, NULL); | |
1325 | } | |
1326 | } | |
1327 | ||
0416841d JB |
1328 | void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, |
1329 | struct iwl_rx_cmd_buffer *rxb) | |
571765c8 IP |
1330 | { |
1331 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
2d2c0e9c | 1332 | struct iwl_extended_beacon_notif *beacon = (void *)pkt->data; |
1c87bbad | 1333 | struct iwl_mvm_tx_resp *beacon_notify_hdr; |
664322fa | 1334 | struct ieee80211_vif *csa_vif; |
003e5236 | 1335 | struct ieee80211_vif *tx_blocked_vif; |
12db294c | 1336 | struct agg_tx_status *agg_status; |
7ef0aab6 | 1337 | u16 status; |
571765c8 | 1338 | |
bd3398e2 AO |
1339 | lockdep_assert_held(&mvm->mutex); |
1340 | ||
2d2c0e9c EG |
1341 | beacon_notify_hdr = &beacon->beacon_notify_hdr; |
1342 | mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2); | |
2f0282db | 1343 | mvm->ibss_manager = beacon->ibss_mgr_status != 0; |
1c87bbad | 1344 | |
12db294c SS |
1345 | agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr); |
1346 | status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK; | |
1c87bbad DS |
1347 | IWL_DEBUG_RX(mvm, |
1348 | "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n", | |
2d2c0e9c EG |
1349 | status, beacon_notify_hdr->failure_frame, |
1350 | le64_to_cpu(beacon->tsf), | |
1c87bbad DS |
1351 | mvm->ap_last_beacon_gp2, |
1352 | le32_to_cpu(beacon_notify_hdr->initial_rate)); | |
bd3398e2 | 1353 | |
664322fa AO |
1354 | csa_vif = rcu_dereference_protected(mvm->csa_vif, |
1355 | lockdep_is_held(&mvm->mutex)); | |
7f0a7c67 | 1356 | if (unlikely(csa_vif && csa_vif->csa_active)) |
7ef0aab6 AO |
1357 | iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2, |
1358 | (status == TX_STATUS_SUCCESS)); | |
bd3398e2 | 1359 | |
003e5236 AO |
1360 | tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif, |
1361 | lockdep_is_held(&mvm->mutex)); | |
1362 | if (unlikely(tx_blocked_vif)) { | |
1363 | struct iwl_mvm_vif *mvmvif = | |
1364 | iwl_mvm_vif_from_mac80211(tx_blocked_vif); | |
1365 | ||
1366 | /* | |
1367 | * The channel switch is started and we have blocked the | |
1368 | * stations. If this is the first beacon (the timeout wasn't | |
1369 | * set), set the unblock timeout, otherwise countdown | |
1370 | */ | |
1371 | if (!mvm->csa_tx_block_bcn_timeout) | |
1372 | mvm->csa_tx_block_bcn_timeout = | |
1373 | IWL_MVM_CS_UNBLOCK_TX_TIMEOUT; | |
1374 | else | |
1375 | mvm->csa_tx_block_bcn_timeout--; | |
1376 | ||
1377 | /* Check if the timeout is expired, and unblock tx */ | |
1378 | if (mvm->csa_tx_block_bcn_timeout == 0) { | |
1379 | iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); | |
1380 | RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); | |
1381 | } | |
1382 | } | |
571765c8 | 1383 | } |
d64048ed HG |
1384 | |
1385 | static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac, | |
1386 | struct ieee80211_vif *vif) | |
1387 | { | |
12d423e8 | 1388 | struct iwl_missed_beacons_notif *missed_beacons = _data; |
d64048ed | 1389 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
9d761fd8 EG |
1390 | struct iwl_mvm *mvm = mvmvif->mvm; |
1391 | struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig; | |
1392 | struct iwl_fw_dbg_trigger_tlv *trigger; | |
1393 | u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx; | |
1394 | u32 rx_missed_bcon, rx_missed_bcon_since_rx; | |
d64048ed | 1395 | |
12d423e8 IP |
1396 | if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id)) |
1397 | return; | |
1398 | ||
9d761fd8 EG |
1399 | rx_missed_bcon = le32_to_cpu(missed_beacons->consec_missed_beacons); |
1400 | rx_missed_bcon_since_rx = | |
1401 | le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx); | |
12d423e8 IP |
1402 | /* |
1403 | * TODO: the threshold should be adjusted based on latency conditions, | |
1404 | * and/or in case of a CS flow on one of the other AP vifs. | |
1405 | */ | |
1406 | if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) > | |
1407 | IWL_MVM_MISSED_BEACONS_THRESHOLD) | |
d64048ed | 1408 | ieee80211_beacon_loss(vif); |
9d761fd8 | 1409 | |
6c042d75 SS |
1410 | trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), |
1411 | FW_DBG_TRIGGER_MISSED_BEACONS); | |
1412 | if (!trigger) | |
9d761fd8 EG |
1413 | return; |
1414 | ||
9d761fd8 EG |
1415 | bcon_trig = (void *)trigger->data; |
1416 | stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon); | |
1417 | stop_trig_missed_bcon_since_rx = | |
1418 | le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx); | |
1419 | ||
1420 | /* TODO: implement start trigger */ | |
1421 | ||
9d761fd8 EG |
1422 | if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx || |
1423 | rx_missed_bcon >= stop_trig_missed_bcon) | |
7174beb6 | 1424 | iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL); |
d64048ed HG |
1425 | } |
1426 | ||
0416841d JB |
1427 | void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, |
1428 | struct iwl_rx_cmd_buffer *rxb) | |
d64048ed HG |
1429 | { |
1430 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
12d423e8 IP |
1431 | struct iwl_missed_beacons_notif *mb = (void *)pkt->data; |
1432 | ||
1433 | IWL_DEBUG_INFO(mvm, | |
1434 | "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n", | |
1435 | le32_to_cpu(mb->mac_id), | |
1436 | le32_to_cpu(mb->consec_missed_beacons), | |
1437 | le32_to_cpu(mb->consec_missed_beacons_since_last_rx), | |
1438 | le32_to_cpu(mb->num_recvd_beacons), | |
1439 | le32_to_cpu(mb->num_expected_beacons)); | |
d64048ed HG |
1440 | |
1441 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
1442 | IEEE80211_IFACE_ITER_NORMAL, | |
1443 | iwl_mvm_beacon_loss_iterator, | |
12d423e8 | 1444 | mb); |
da2eb669 SS |
1445 | |
1446 | iwl_fw_dbg_apply_point(&mvm->fwrt, IWL_FW_INI_APPLY_MISSED_BEACONS); | |
d64048ed | 1447 | } |
0db056d3 SS |
1448 | |
1449 | void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm, | |
1450 | struct iwl_rx_cmd_buffer *rxb) | |
1451 | { | |
1452 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1453 | struct iwl_stored_beacon_notif *sb = (void *)pkt->data; | |
1454 | struct ieee80211_rx_status rx_status; | |
1455 | struct sk_buff *skb; | |
1456 | u32 size = le32_to_cpu(sb->byte_count); | |
1457 | ||
1458 | if (size == 0) | |
1459 | return; | |
1460 | ||
1461 | skb = alloc_skb(size, GFP_ATOMIC); | |
1462 | if (!skb) { | |
1463 | IWL_ERR(mvm, "alloc_skb failed\n"); | |
1464 | return; | |
1465 | } | |
1466 | ||
1467 | /* update rx_status according to the notification's metadata */ | |
1468 | memset(&rx_status, 0, sizeof(rx_status)); | |
1469 | rx_status.mactime = le64_to_cpu(sb->tsf); | |
77fe7395 SS |
1470 | /* TSF as indicated by the firmware is at INA time */ |
1471 | rx_status.flag |= RX_FLAG_MACTIME_PLCP_START; | |
0db056d3 SS |
1472 | rx_status.device_timestamp = le32_to_cpu(sb->system_time); |
1473 | rx_status.band = | |
34118c25 | 1474 | (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? |
57fbcce3 | 1475 | NL80211_BAND_2GHZ : NL80211_BAND_5GHZ; |
0db056d3 SS |
1476 | rx_status.freq = |
1477 | ieee80211_channel_to_frequency(le16_to_cpu(sb->channel), | |
1478 | rx_status.band); | |
1479 | ||
1480 | /* copy the data */ | |
59ae1d12 | 1481 | skb_put_data(skb, sb->data, size); |
0db056d3 SS |
1482 | memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status)); |
1483 | ||
1484 | /* pass it as regular rx to mac80211 */ | |
d63b548f | 1485 | ieee80211_rx_napi(mvm->hw, NULL, skb, NULL); |
0db056d3 | 1486 | } |
d3a108a4 | 1487 | |
86e177d8 GG |
1488 | static void iwl_mvm_probe_resp_data_iter(void *_data, u8 *mac, |
1489 | struct ieee80211_vif *vif) | |
1490 | { | |
1491 | struct iwl_probe_resp_data_notif *notif = _data; | |
1492 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1493 | struct iwl_probe_resp_data *old_data, *new_data; | |
1494 | ||
1495 | if (mvmvif->id != (u16)le32_to_cpu(notif->mac_id)) | |
1496 | return; | |
1497 | ||
1498 | new_data = kzalloc(sizeof(*new_data), GFP_KERNEL); | |
1499 | if (!new_data) | |
1500 | return; | |
1501 | ||
1502 | memcpy(&new_data->notif, notif, sizeof(new_data->notif)); | |
1503 | ||
1504 | /* noa_attr contains 1 reserved byte, need to substruct it */ | |
1505 | new_data->noa_len = sizeof(struct ieee80211_vendor_ie) + | |
1506 | sizeof(new_data->notif.noa_attr) - 1; | |
1507 | ||
1508 | /* | |
1509 | * If it's a one time NoA, only one descriptor is needed, | |
1510 | * adjust the length according to len_low. | |
1511 | */ | |
1512 | if (new_data->notif.noa_attr.len_low == | |
1513 | sizeof(struct ieee80211_p2p_noa_desc) + 2) | |
1514 | new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc); | |
1515 | ||
1516 | old_data = rcu_dereference_protected(mvmvif->probe_resp_data, | |
1517 | lockdep_is_held(&mvmvif->mvm->mutex)); | |
1518 | rcu_assign_pointer(mvmvif->probe_resp_data, new_data); | |
1519 | ||
1520 | if (old_data) | |
1521 | kfree_rcu(old_data, rcu_head); | |
1522 | ||
1523 | if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA && | |
1524 | notif->csa_counter >= 1) | |
1525 | ieee80211_csa_set_counter(vif, notif->csa_counter); | |
1526 | } | |
1527 | ||
1528 | void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm, | |
1529 | struct iwl_rx_cmd_buffer *rxb) | |
1530 | { | |
1531 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1532 | struct iwl_probe_resp_data_notif *notif = (void *)pkt->data; | |
1533 | int len = iwl_rx_packet_payload_len(pkt); | |
1534 | ||
1535 | if (WARN_ON_ONCE(len < sizeof(*notif))) | |
1536 | return; | |
1537 | ||
1538 | IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n", | |
1539 | notif->noa_active, notif->csa_counter); | |
1540 | ||
1541 | ieee80211_iterate_active_interfaces(mvm->hw, | |
1542 | IEEE80211_IFACE_ITER_ACTIVE, | |
1543 | iwl_mvm_probe_resp_data_iter, | |
1544 | notif); | |
1545 | } | |
1546 | ||
d3a108a4 AO |
1547 | void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm *mvm, |
1548 | struct iwl_rx_cmd_buffer *rxb) | |
1549 | { | |
1550 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1551 | struct iwl_channel_switch_noa_notif *notif = (void *)pkt->data; | |
1552 | struct ieee80211_vif *csa_vif; | |
1553 | struct iwl_mvm_vif *mvmvif; | |
1554 | int len = iwl_rx_packet_payload_len(pkt); | |
1555 | u32 id_n_color; | |
1556 | ||
1557 | if (WARN_ON_ONCE(len < sizeof(*notif))) | |
1558 | return; | |
1559 | ||
1560 | rcu_read_lock(); | |
1561 | ||
1562 | csa_vif = rcu_dereference(mvm->csa_vif); | |
1563 | if (WARN_ON(!csa_vif || !csa_vif->csa_active)) | |
1564 | goto out_unlock; | |
1565 | ||
1566 | id_n_color = le32_to_cpu(notif->id_and_color); | |
1567 | ||
1568 | mvmvif = iwl_mvm_vif_from_mac80211(csa_vif); | |
1569 | if (WARN(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color) != id_n_color, | |
1570 | "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)", | |
1571 | FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color), id_n_color)) | |
1572 | goto out_unlock; | |
1573 | ||
1574 | IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n"); | |
1575 | ||
86bbb1e1 JB |
1576 | schedule_delayed_work(&mvm->cs_tx_unblock_dwork, |
1577 | msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT * | |
1578 | csa_vif->bss_conf.beacon_int)); | |
d3a108a4 AO |
1579 | |
1580 | ieee80211_csa_finish(csa_vif); | |
1581 | ||
1582 | rcu_read_unlock(); | |
1583 | ||
1584 | RCU_INIT_POINTER(mvm->csa_vif, NULL); | |
1585 | ||
1586 | return; | |
1587 | ||
1588 | out_unlock: | |
1589 | rcu_read_unlock(); | |
1590 | } |