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-rw-r--r--drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c1452
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diff --git a/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c
deleted file mode 100644
index ad7ad720d2e7..000000000000
--- a/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c
+++ /dev/null
@@ -1,1452 +0,0 @@
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 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 * Copyright(c) 2015 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * USA
25 *
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
28 *
29 * Contact Information:
30 * Intel Linux Wireless <ilw@linux.intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32 *
33 * BSD LICENSE
34 *
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
37 * Copyright(c) 2015 Intel Deutschland GmbH
38 * All rights reserved.
39 *
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
42 * are met:
43 *
44 * * Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * * Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in
48 * the documentation and/or other materials provided with the
49 * distribution.
50 * * Neither the name Intel Corporation nor the names of its
51 * contributors may be used to endorse or promote products derived
52 * from this software without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65 *
66 *****************************************************************************/
67
68#include <linux/etherdevice.h>
69#include <net/mac80211.h>
70#include "iwl-io.h"
71#include "iwl-prph.h"
72#include "fw-api.h"
73#include "mvm.h"
74#include "time-event.h"
75
76const u8 iwl_mvm_ac_to_tx_fifo[] = {
77 IWL_MVM_TX_FIFO_VO,
78 IWL_MVM_TX_FIFO_VI,
79 IWL_MVM_TX_FIFO_BE,
80 IWL_MVM_TX_FIFO_BK,
81};
82
83struct iwl_mvm_mac_iface_iterator_data {
84 struct iwl_mvm *mvm;
85 struct ieee80211_vif *vif;
86 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];
87 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];
88 enum iwl_tsf_id preferred_tsf;
89 bool found_vif;
90};
91
92struct iwl_mvm_hw_queues_iface_iterator_data {
93 struct ieee80211_vif *exclude_vif;
94 unsigned long used_hw_queues;
95};
96
97static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,
98 struct ieee80211_vif *vif)
99{
100 struct iwl_mvm_mac_iface_iterator_data *data = _data;
101 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
102 u16 min_bi;
103
104 /* Skip the interface for which we are trying to assign a tsf_id */
105 if (vif == data->vif)
106 return;
107
108 /*
109 * The TSF is a hardware/firmware resource, there are 4 and
110 * the driver should assign and free them as needed. However,
111 * there are cases where 2 MACs should share the same TSF ID
112 * for the purpose of clock sync, an optimization to avoid
113 * clock drift causing overlapping TBTTs/DTIMs for a GO and
114 * client in the system.
115 *
116 * The firmware will decide according to the MAC type which
117 * will be the master and slave. Clients that need to sync
118 * with a remote station will be the master, and an AP or GO
119 * will be the slave.
120 *
121 * Depending on the new interface type it can be slaved to
122 * or become the master of an existing interface.
123 */
124 switch (data->vif->type) {
125 case NL80211_IFTYPE_STATION:
126 /*
127 * The new interface is a client, so if the one we're iterating
128 * is an AP, and the beacon interval of the AP is a multiple or
129 * divisor of the beacon interval of the client, the same TSF
130 * should be used to avoid drift between the new client and
131 * existing AP. The existing AP will get drift updates from the
132 * new client context in this case.
133 */
134 if (vif->type != NL80211_IFTYPE_AP ||
135 data->preferred_tsf != NUM_TSF_IDS ||
136 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
137 break;
138
139 min_bi = min(data->vif->bss_conf.beacon_int,
140 vif->bss_conf.beacon_int);
141
142 if (!min_bi)
143 break;
144
145 if ((data->vif->bss_conf.beacon_int -
146 vif->bss_conf.beacon_int) % min_bi == 0) {
147 data->preferred_tsf = mvmvif->tsf_id;
148 return;
149 }
150 break;
151
152 case NL80211_IFTYPE_AP:
153 /*
154 * The new interface is AP/GO, so if its beacon interval is a
155 * multiple or a divisor of the beacon interval of an existing
156 * interface, it should get drift updates from an existing
157 * client or use the same TSF as an existing GO. There's no
158 * drift between TSFs internally but if they used different
159 * TSFs then a new client MAC could update one of them and
160 * cause drift that way.
161 */
162 if ((vif->type != NL80211_IFTYPE_AP &&
163 vif->type != NL80211_IFTYPE_STATION) ||
164 data->preferred_tsf != NUM_TSF_IDS ||
165 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
166 break;
167
168 min_bi = min(data->vif->bss_conf.beacon_int,
169 vif->bss_conf.beacon_int);
170
171 if (!min_bi)
172 break;
173
174 if ((data->vif->bss_conf.beacon_int -
175 vif->bss_conf.beacon_int) % min_bi == 0) {
176 data->preferred_tsf = mvmvif->tsf_id;
177 return;
178 }
179 break;
180 default:
181 /*
182 * For all other interface types there's no need to
183 * take drift into account. Either they're exclusive
184 * like IBSS and monitor, or we don't care much about
185 * their TSF (like P2P Device), but we won't be able
186 * to share the TSF resource.
187 */
188 break;
189 }
190
191 /*
192 * Unless we exited above, we can't share the TSF resource
193 * that the virtual interface we're iterating over is using
194 * with the new one, so clear the available bit and if this
195 * was the preferred one, reset that as well.
196 */
197 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
198
199 if (data->preferred_tsf == mvmvif->tsf_id)
200 data->preferred_tsf = NUM_TSF_IDS;
201}
202
203/*
204 * Get the mask of the queues used by the vif
205 */
206u32 iwl_mvm_mac_get_queues_mask(struct ieee80211_vif *vif)
207{
208 u32 qmask = 0, ac;
209
210 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
211 return BIT(IWL_MVM_OFFCHANNEL_QUEUE);
212
213 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
214 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
215 qmask |= BIT(vif->hw_queue[ac]);
216 }
217
218 if (vif->type == NL80211_IFTYPE_AP)
219 qmask |= BIT(vif->cab_queue);
220
221 return qmask;
222}
223
224static void iwl_mvm_iface_hw_queues_iter(void *_data, u8 *mac,
225 struct ieee80211_vif *vif)
226{
227 struct iwl_mvm_hw_queues_iface_iterator_data *data = _data;
228
229 /* exclude the given vif */
230 if (vif == data->exclude_vif)
231 return;
232
233 data->used_hw_queues |= iwl_mvm_mac_get_queues_mask(vif);
234}
235
236static void iwl_mvm_mac_sta_hw_queues_iter(void *_data,
237 struct ieee80211_sta *sta)
238{
239 struct iwl_mvm_hw_queues_iface_iterator_data *data = _data;
240 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
241
242 /* Mark the queues used by the sta */
243 data->used_hw_queues |= mvmsta->tfd_queue_msk;
244}
245
246unsigned long iwl_mvm_get_used_hw_queues(struct iwl_mvm *mvm,
247 struct ieee80211_vif *exclude_vif)
248{
249 u8 sta_id;
250 struct iwl_mvm_hw_queues_iface_iterator_data data = {
251 .exclude_vif = exclude_vif,
252 .used_hw_queues =
253 BIT(IWL_MVM_OFFCHANNEL_QUEUE) |
254 BIT(mvm->aux_queue) |
255 BIT(IWL_MVM_CMD_QUEUE),
256 };
257
258 lockdep_assert_held(&mvm->mutex);
259
260 /* mark all VIF used hw queues */
261 ieee80211_iterate_active_interfaces_atomic(
262 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
263 iwl_mvm_iface_hw_queues_iter, &data);
264
265 /* don't assign the same hw queues as TDLS stations */
266 ieee80211_iterate_stations_atomic(mvm->hw,
267 iwl_mvm_mac_sta_hw_queues_iter,
268 &data);
269
270 /*
271 * Some TDLS stations may be removed but are in the process of being
272 * drained. Don't touch their queues.
273 */
274 for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT)
275 data.used_hw_queues |= mvm->tfd_drained[sta_id];
276
277 return data.used_hw_queues;
278}
279
280static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
281 struct ieee80211_vif *vif)
282{
283 struct iwl_mvm_mac_iface_iterator_data *data = _data;
284 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
285
286 /* Iterator may already find the interface being added -- skip it */
287 if (vif == data->vif) {
288 data->found_vif = true;
289 return;
290 }
291
292 /* Mark MAC IDs as used by clearing the available bit, and
293 * (below) mark TSFs as used if their existing use is not
294 * compatible with the new interface type.
295 * No locking or atomic bit operations are needed since the
296 * data is on the stack of the caller function.
297 */
298 __clear_bit(mvmvif->id, data->available_mac_ids);
299
300 /* find a suitable tsf_id */
301 iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
302}
303
304void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
305 struct ieee80211_vif *vif)
306{
307 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
308 struct iwl_mvm_mac_iface_iterator_data data = {
309 .mvm = mvm,
310 .vif = vif,
311 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
312 /* no preference yet */
313 .preferred_tsf = NUM_TSF_IDS,
314 };
315
316 ieee80211_iterate_active_interfaces_atomic(
317 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
318 iwl_mvm_mac_tsf_id_iter, &data);
319
320 if (data.preferred_tsf != NUM_TSF_IDS)
321 mvmvif->tsf_id = data.preferred_tsf;
322 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))
323 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
324 NUM_TSF_IDS);
325}
326
327static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm,
328 struct ieee80211_vif *vif)
329{
330 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
331 struct iwl_mvm_mac_iface_iterator_data data = {
332 .mvm = mvm,
333 .vif = vif,
334 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
335 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
336 /* no preference yet */
337 .preferred_tsf = NUM_TSF_IDS,
338 .found_vif = false,
339 };
340 u32 ac;
341 int ret, i;
342 unsigned long used_hw_queues;
343
344 /*
345 * Allocate a MAC ID and a TSF for this MAC, along with the queues
346 * and other resources.
347 */
348
349 /*
350 * Before the iterator, we start with all MAC IDs and TSFs available.
351 *
352 * During iteration, all MAC IDs are cleared that are in use by other
353 * virtual interfaces, and all TSF IDs are cleared that can't be used
354 * by this new virtual interface because they're used by an interface
355 * that can't share it with the new one.
356 * At the same time, we check if there's a preferred TSF in the case
357 * that we should share it with another interface.
358 */
359
360 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
361 switch (vif->type) {
362 case NL80211_IFTYPE_ADHOC:
363 break;
364 case NL80211_IFTYPE_STATION:
365 if (!vif->p2p)
366 break;
367 /* fall through */
368 default:
369 __clear_bit(0, data.available_mac_ids);
370 }
371
372 ieee80211_iterate_active_interfaces_atomic(
373 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
374 iwl_mvm_mac_iface_iterator, &data);
375
376 used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, vif);
377
378 /*
379 * In the case we're getting here during resume, it's similar to
380 * firmware restart, and with RESUME_ALL the iterator will find
381 * the vif being added already.
382 * We don't want to reassign any IDs in either case since doing
383 * so would probably assign different IDs (as interfaces aren't
384 * necessarily added in the same order), but the old IDs were
385 * preserved anyway, so skip ID assignment for both resume and
386 * recovery.
387 */
388 if (data.found_vif)
389 return 0;
390
391 /* Therefore, in recovery, we can't get here */
392 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
393 return -EBUSY;
394
395 mvmvif->id = find_first_bit(data.available_mac_ids,
396 NUM_MAC_INDEX_DRIVER);
397 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
398 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
399 ret = -EIO;
400 goto exit_fail;
401 }
402
403 if (data.preferred_tsf != NUM_TSF_IDS)
404 mvmvif->tsf_id = data.preferred_tsf;
405 else
406 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
407 NUM_TSF_IDS);
408 if (mvmvif->tsf_id == NUM_TSF_IDS) {
409 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
410 ret = -EIO;
411 goto exit_fail;
412 }
413
414 mvmvif->color = 0;
415
416 INIT_LIST_HEAD(&mvmvif->time_event_data.list);
417 mvmvif->time_event_data.id = TE_MAX;
418
419 /* No need to allocate data queues to P2P Device MAC.*/
420 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
421 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
422 vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE;
423
424 return 0;
425 }
426
427 /* Find available queues, and allocate them to the ACs */
428 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
429 u8 queue = find_first_zero_bit(&used_hw_queues,
430 mvm->first_agg_queue);
431
432 if (queue >= mvm->first_agg_queue) {
433 IWL_ERR(mvm, "Failed to allocate queue\n");
434 ret = -EIO;
435 goto exit_fail;
436 }
437
438 __set_bit(queue, &used_hw_queues);
439 vif->hw_queue[ac] = queue;
440 }
441
442 /* Allocate the CAB queue for softAP and GO interfaces */
443 if (vif->type == NL80211_IFTYPE_AP) {
444 u8 queue = find_first_zero_bit(&used_hw_queues,
445 mvm->first_agg_queue);
446
447 if (queue >= mvm->first_agg_queue) {
448 IWL_ERR(mvm, "Failed to allocate cab queue\n");
449 ret = -EIO;
450 goto exit_fail;
451 }
452
453 vif->cab_queue = queue;
454 } else {
455 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
456 }
457
458 mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT;
459 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
460
461 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
462 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
463
464 return 0;
465
466exit_fail:
467 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
468 memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue));
469 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
470 return ret;
471}
472
473int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
474{
475 unsigned int wdg_timeout =
476 iwl_mvm_get_wd_timeout(mvm, vif, false, false);
477 u32 ac;
478 int ret;
479
480 lockdep_assert_held(&mvm->mutex);
481
482 ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif);
483 if (ret)
484 return ret;
485
486 switch (vif->type) {
487 case NL80211_IFTYPE_P2P_DEVICE:
488 iwl_mvm_enable_ac_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE,
489 IWL_MVM_OFFCHANNEL_QUEUE,
490 IWL_MVM_TX_FIFO_VO, 0, wdg_timeout);
491 break;
492 case NL80211_IFTYPE_AP:
493 iwl_mvm_enable_ac_txq(mvm, vif->cab_queue, vif->cab_queue,
494 IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout);
495 /* fall through */
496 default:
497 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
498 iwl_mvm_enable_ac_txq(mvm, vif->hw_queue[ac],
499 vif->hw_queue[ac],
500 iwl_mvm_ac_to_tx_fifo[ac], 0,
501 wdg_timeout);
502 break;
503 }
504
505 return 0;
506}
507
508void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
509{
510 int ac;
511
512 lockdep_assert_held(&mvm->mutex);
513
514 switch (vif->type) {
515 case NL80211_IFTYPE_P2P_DEVICE:
516 iwl_mvm_disable_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE,
517 IWL_MVM_OFFCHANNEL_QUEUE, IWL_MAX_TID_COUNT,
518 0);
519 break;
520 case NL80211_IFTYPE_AP:
521 iwl_mvm_disable_txq(mvm, vif->cab_queue, vif->cab_queue,
522 IWL_MAX_TID_COUNT, 0);
523 /* fall through */
524 default:
525 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
526 iwl_mvm_disable_txq(mvm, vif->hw_queue[ac],
527 vif->hw_queue[ac],
528 IWL_MAX_TID_COUNT, 0);
529 }
530}
531
532static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
533 struct ieee80211_vif *vif,
534 enum ieee80211_band band,
535 u8 *cck_rates, u8 *ofdm_rates)
536{
537 struct ieee80211_supported_band *sband;
538 unsigned long basic = vif->bss_conf.basic_rates;
539 int lowest_present_ofdm = 100;
540 int lowest_present_cck = 100;
541 u8 cck = 0;
542 u8 ofdm = 0;
543 int i;
544
545 sband = mvm->hw->wiphy->bands[band];
546
547 for_each_set_bit(i, &basic, BITS_PER_LONG) {
548 int hw = sband->bitrates[i].hw_value;
549 if (hw >= IWL_FIRST_OFDM_RATE) {
550 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
551 if (lowest_present_ofdm > hw)
552 lowest_present_ofdm = hw;
553 } else {
554 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
555
556 cck |= BIT(hw);
557 if (lowest_present_cck > hw)
558 lowest_present_cck = hw;
559 }
560 }
561
562 /*
563 * Now we've got the basic rates as bitmaps in the ofdm and cck
564 * variables. This isn't sufficient though, as there might not
565 * be all the right rates in the bitmap. E.g. if the only basic
566 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
567 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
568 *
569 * [...] a STA responding to a received frame shall transmit
570 * its Control Response frame [...] at the highest rate in the
571 * BSSBasicRateSet parameter that is less than or equal to the
572 * rate of the immediately previous frame in the frame exchange
573 * sequence ([...]) and that is of the same modulation class
574 * ([...]) as the received frame. If no rate contained in the
575 * BSSBasicRateSet parameter meets these conditions, then the
576 * control frame sent in response to a received frame shall be
577 * transmitted at the highest mandatory rate of the PHY that is
578 * less than or equal to the rate of the received frame, and
579 * that is of the same modulation class as the received frame.
580 *
581 * As a consequence, we need to add all mandatory rates that are
582 * lower than all of the basic rates to these bitmaps.
583 */
584
585 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
586 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
587 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
588 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
589 /* 6M already there or needed so always add */
590 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
591
592 /*
593 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
594 * Note, however:
595 * - if no CCK rates are basic, it must be ERP since there must
596 * be some basic rates at all, so they're OFDM => ERP PHY
597 * (or we're in 5 GHz, and the cck bitmap will never be used)
598 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
599 * - if 5.5M is basic, 1M and 2M are mandatory
600 * - if 2M is basic, 1M is mandatory
601 * - if 1M is basic, that's the only valid ACK rate.
602 * As a consequence, it's not as complicated as it sounds, just add
603 * any lower rates to the ACK rate bitmap.
604 */
605 if (IWL_RATE_11M_INDEX < lowest_present_cck)
606 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
607 if (IWL_RATE_5M_INDEX < lowest_present_cck)
608 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
609 if (IWL_RATE_2M_INDEX < lowest_present_cck)
610 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
611 /* 1M already there or needed so always add */
612 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
613
614 *cck_rates = cck;
615 *ofdm_rates = ofdm;
616}
617
618static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm,
619 struct ieee80211_vif *vif,
620 struct iwl_mac_ctx_cmd *cmd)
621{
622 /* for both sta and ap, ht_operation_mode hold the protection_mode */
623 u8 protection_mode = vif->bss_conf.ht_operation_mode &
624 IEEE80211_HT_OP_MODE_PROTECTION;
625 /* The fw does not distinguish between ht and fat */
626 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
627
628 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
629 /*
630 * See section 9.23.3.1 of IEEE 80211-2012.
631 * Nongreenfield HT STAs Present is not supported.
632 */
633 switch (protection_mode) {
634 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
635 break;
636 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
637 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
638 cmd->protection_flags |= cpu_to_le32(ht_flag);
639 break;
640 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
641 /* Protect when channel wider than 20MHz */
642 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20)
643 cmd->protection_flags |= cpu_to_le32(ht_flag);
644 break;
645 default:
646 IWL_ERR(mvm, "Illegal protection mode %d\n",
647 protection_mode);
648 break;
649 }
650}
651
652static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
653 struct ieee80211_vif *vif,
654 struct iwl_mac_ctx_cmd *cmd,
655 const u8 *bssid_override,
656 u32 action)
657{
658 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
659 struct ieee80211_chanctx_conf *chanctx;
660 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode &
661 IEEE80211_HT_OP_MODE_PROTECTION);
662 u8 cck_ack_rates, ofdm_ack_rates;
663 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
664 int i;
665
666 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
667 mvmvif->color));
668 cmd->action = cpu_to_le32(action);
669
670 switch (vif->type) {
671 case NL80211_IFTYPE_STATION:
672 if (vif->p2p)
673 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
674 else
675 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
676 break;
677 case NL80211_IFTYPE_AP:
678 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
679 break;
680 case NL80211_IFTYPE_MONITOR:
681 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
682 break;
683 case NL80211_IFTYPE_P2P_DEVICE:
684 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
685 break;
686 case NL80211_IFTYPE_ADHOC:
687 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
688 break;
689 default:
690 WARN_ON_ONCE(1);
691 }
692
693 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
694
695 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
696
697 if (bssid)
698 memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
699 else
700 eth_broadcast_addr(cmd->bssid_addr);
701
702 rcu_read_lock();
703 chanctx = rcu_dereference(vif->chanctx_conf);
704 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
705 : IEEE80211_BAND_2GHZ,
706 &cck_ack_rates, &ofdm_ack_rates);
707 rcu_read_unlock();
708
709 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
710 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
711
712 cmd->cck_short_preamble =
713 cpu_to_le32(vif->bss_conf.use_short_preamble ?
714 MAC_FLG_SHORT_PREAMBLE : 0);
715 cmd->short_slot =
716 cpu_to_le32(vif->bss_conf.use_short_slot ?
717 MAC_FLG_SHORT_SLOT : 0);
718
719 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
720 u8 txf = iwl_mvm_ac_to_tx_fifo[i];
721
722 cmd->ac[txf].cw_min =
723 cpu_to_le16(mvmvif->queue_params[i].cw_min);
724 cmd->ac[txf].cw_max =
725 cpu_to_le16(mvmvif->queue_params[i].cw_max);
726 cmd->ac[txf].edca_txop =
727 cpu_to_le16(mvmvif->queue_params[i].txop * 32);
728 cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs;
729 cmd->ac[txf].fifos_mask = BIT(txf);
730 }
731
732 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
733 if (vif->type == NL80211_IFTYPE_AP)
734 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |=
735 BIT(IWL_MVM_TX_FIFO_MCAST);
736
737 if (vif->bss_conf.qos)
738 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
739
740 if (vif->bss_conf.use_cts_prot)
741 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
742
743 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
744 vif->bss_conf.use_cts_prot,
745 vif->bss_conf.ht_operation_mode);
746 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
747 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
748 if (ht_enabled)
749 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd);
750
751 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
752}
753
754static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
755 struct iwl_mac_ctx_cmd *cmd)
756{
757 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
758 sizeof(*cmd), cmd);
759 if (ret)
760 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
761 le32_to_cpu(cmd->action), ret);
762 return ret;
763}
764
765static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
766 struct ieee80211_vif *vif,
767 u32 action, bool force_assoc_off,
768 const u8 *bssid_override)
769{
770 struct iwl_mac_ctx_cmd cmd = {};
771 struct iwl_mac_data_sta *ctxt_sta;
772
773 WARN_ON(vif->type != NL80211_IFTYPE_STATION);
774
775 /* Fill the common data for all mac context types */
776 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
777
778 if (vif->p2p) {
779 struct ieee80211_p2p_noa_attr *noa =
780 &vif->bss_conf.p2p_noa_attr;
781
782 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow &
783 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
784 ctxt_sta = &cmd.p2p_sta.sta;
785 } else {
786 ctxt_sta = &cmd.sta;
787 }
788
789 /* We need the dtim_period to set the MAC as associated */
790 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period &&
791 !force_assoc_off) {
792 u32 dtim_offs;
793
794 /*
795 * The DTIM count counts down, so when it is N that means N
796 * more beacon intervals happen until the DTIM TBTT. Therefore
797 * add this to the current time. If that ends up being in the
798 * future, the firmware will handle it.
799 *
800 * Also note that the system_timestamp (which we get here as
801 * "sync_device_ts") and TSF timestamp aren't at exactly the
802 * same offset in the frame -- the TSF is at the first symbol
803 * of the TSF, the system timestamp is at signal acquisition
804 * time. This means there's an offset between them of at most
805 * a few hundred microseconds (24 * 8 bits + PLCP time gives
806 * 384us in the longest case), this is currently not relevant
807 * as the firmware wakes up around 2ms before the TBTT.
808 */
809 dtim_offs = vif->bss_conf.sync_dtim_count *
810 vif->bss_conf.beacon_int;
811 /* convert TU to usecs */
812 dtim_offs *= 1024;
813
814 ctxt_sta->dtim_tsf =
815 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
816 ctxt_sta->dtim_time =
817 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
818
819 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
820 le64_to_cpu(ctxt_sta->dtim_tsf),
821 le32_to_cpu(ctxt_sta->dtim_time),
822 dtim_offs);
823
824 ctxt_sta->is_assoc = cpu_to_le32(1);
825 } else {
826 ctxt_sta->is_assoc = cpu_to_le32(0);
827
828 /* Allow beacons to pass through as long as we are not
829 * associated, or we do not have dtim period information.
830 */
831 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
832 }
833
834 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
835 ctxt_sta->bi_reciprocal =
836 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
837 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
838 vif->bss_conf.dtim_period);
839 ctxt_sta->dtim_reciprocal =
840 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
841 vif->bss_conf.dtim_period));
842
843 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
844 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
845
846 if (vif->probe_req_reg && vif->bss_conf.assoc && vif->p2p)
847 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
848
849 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
850}
851
852static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
853 struct ieee80211_vif *vif,
854 u32 action)
855{
856 struct iwl_mac_ctx_cmd cmd = {};
857
858 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
859
860 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
861
862 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
863 MAC_FILTER_IN_CONTROL_AND_MGMT |
864 MAC_FILTER_IN_BEACON |
865 MAC_FILTER_IN_PROBE_REQUEST |
866 MAC_FILTER_IN_CRC32);
867 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
868
869 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
870}
871
872static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
873 struct ieee80211_vif *vif,
874 u32 action)
875{
876 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
877 struct iwl_mac_ctx_cmd cmd = {};
878
879 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
880
881 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
882
883 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
884 MAC_FILTER_IN_PROBE_REQUEST);
885
886 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
887 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
888 cmd.ibss.bi_reciprocal =
889 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
890
891 /* TODO: Assumes that the beacon id == mac context id */
892 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
893
894 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
895}
896
897struct iwl_mvm_go_iterator_data {
898 bool go_active;
899};
900
901static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
902{
903 struct iwl_mvm_go_iterator_data *data = _data;
904 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
905
906 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
907 mvmvif->ap_ibss_active)
908 data->go_active = true;
909}
910
911static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
912 struct ieee80211_vif *vif,
913 u32 action)
914{
915 struct iwl_mac_ctx_cmd cmd = {};
916 struct iwl_mvm_go_iterator_data data = {};
917
918 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
919
920 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
921
922 cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
923
924 /* Override the filter flags to accept only probe requests */
925 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
926
927 /*
928 * This flag should be set to true when the P2P Device is
929 * discoverable and there is at least another active P2P GO. Settings
930 * this flag will allow the P2P Device to be discoverable on other
931 * channels in addition to its listen channel.
932 * Note that this flag should not be set in other cases as it opens the
933 * Rx filters on all MAC and increases the number of interrupts.
934 */
935 ieee80211_iterate_active_interfaces_atomic(
936 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
937 iwl_mvm_go_iterator, &data);
938
939 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
940 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
941}
942
943static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
944 struct iwl_mac_beacon_cmd *beacon_cmd,
945 u8 *beacon, u32 frame_size)
946{
947 u32 tim_idx;
948 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
949
950 /* The index is relative to frame start but we start looking at the
951 * variable-length part of the beacon. */
952 tim_idx = mgmt->u.beacon.variable - beacon;
953
954 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
955 while ((tim_idx < (frame_size - 2)) &&
956 (beacon[tim_idx] != WLAN_EID_TIM))
957 tim_idx += beacon[tim_idx+1] + 2;
958
959 /* If TIM field was found, set variables */
960 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
961 beacon_cmd->tim_idx = cpu_to_le32(tim_idx);
962 beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]);
963 } else {
964 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
965 }
966}
967
968static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
969 struct ieee80211_vif *vif,
970 struct sk_buff *beacon)
971{
972 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
973 struct iwl_host_cmd cmd = {
974 .id = BEACON_TEMPLATE_CMD,
975 .flags = CMD_ASYNC,
976 };
977 struct iwl_mac_beacon_cmd beacon_cmd = {};
978 struct ieee80211_tx_info *info;
979 u32 beacon_skb_len;
980 u32 rate, tx_flags;
981
982 if (WARN_ON(!beacon))
983 return -EINVAL;
984
985 beacon_skb_len = beacon->len;
986
987 /* TODO: for now the beacon template id is set to be the mac context id.
988 * Might be better to handle it as another resource ... */
989 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
990 info = IEEE80211_SKB_CB(beacon);
991
992 /* Set up TX command fields */
993 beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len);
994 beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id;
995 beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
996 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
997 tx_flags |=
998 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
999 TX_CMD_FLG_BT_PRIO_POS;
1000 beacon_cmd.tx.tx_flags = cpu_to_le32(tx_flags);
1001
1002 mvm->mgmt_last_antenna_idx =
1003 iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm),
1004 mvm->mgmt_last_antenna_idx);
1005
1006 beacon_cmd.tx.rate_n_flags =
1007 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
1008 RATE_MCS_ANT_POS);
1009
1010 if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) {
1011 rate = IWL_FIRST_OFDM_RATE;
1012 } else {
1013 rate = IWL_FIRST_CCK_RATE;
1014 beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
1015 }
1016 beacon_cmd.tx.rate_n_flags |=
1017 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
1018
1019 /* Set up TX beacon command fields */
1020 if (vif->type == NL80211_IFTYPE_AP)
1021 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd,
1022 beacon->data,
1023 beacon_skb_len);
1024
1025 /* Submit command */
1026 cmd.len[0] = sizeof(beacon_cmd);
1027 cmd.data[0] = &beacon_cmd;
1028 cmd.dataflags[0] = 0;
1029 cmd.len[1] = beacon_skb_len;
1030 cmd.data[1] = beacon->data;
1031 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
1032
1033 return iwl_mvm_send_cmd(mvm, &cmd);
1034}
1035
1036/* The beacon template for the AP/GO/IBSS has changed and needs update */
1037int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
1038 struct ieee80211_vif *vif)
1039{
1040 struct sk_buff *beacon;
1041 int ret;
1042
1043 WARN_ON(vif->type != NL80211_IFTYPE_AP &&
1044 vif->type != NL80211_IFTYPE_ADHOC);
1045
1046 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL);
1047 if (!beacon)
1048 return -ENOMEM;
1049
1050 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
1051 dev_kfree_skb(beacon);
1052 return ret;
1053}
1054
1055struct iwl_mvm_mac_ap_iterator_data {
1056 struct iwl_mvm *mvm;
1057 struct ieee80211_vif *vif;
1058 u32 beacon_device_ts;
1059 u16 beacon_int;
1060};
1061
1062/* Find the beacon_device_ts and beacon_int for a managed interface */
1063static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
1064 struct ieee80211_vif *vif)
1065{
1066 struct iwl_mvm_mac_ap_iterator_data *data = _data;
1067
1068 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
1069 return;
1070
1071 /* Station client has higher priority over P2P client*/
1072 if (vif->p2p && data->beacon_device_ts)
1073 return;
1074
1075 data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1076 data->beacon_int = vif->bss_conf.beacon_int;
1077}
1078
1079/*
1080 * Fill the specific data for mac context of type AP of P2P GO
1081 */
1082static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1083 struct ieee80211_vif *vif,
1084 struct iwl_mac_data_ap *ctxt_ap,
1085 bool add)
1086{
1087 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1088 struct iwl_mvm_mac_ap_iterator_data data = {
1089 .mvm = mvm,
1090 .vif = vif,
1091 .beacon_device_ts = 0
1092 };
1093
1094 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1095 ctxt_ap->bi_reciprocal =
1096 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
1097 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1098 vif->bss_conf.dtim_period);
1099 ctxt_ap->dtim_reciprocal =
1100 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
1101 vif->bss_conf.dtim_period));
1102
1103 ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue);
1104
1105 /*
1106 * Only set the beacon time when the MAC is being added, when we
1107 * just modify the MAC then we should keep the time -- the firmware
1108 * can otherwise have a "jumping" TBTT.
1109 */
1110 if (add) {
1111 /*
1112 * If there is a station/P2P client interface which is
1113 * associated, set the AP's TBTT far enough from the station's
1114 * TBTT. Otherwise, set it to the current system time
1115 */
1116 ieee80211_iterate_active_interfaces_atomic(
1117 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1118 iwl_mvm_mac_ap_iterator, &data);
1119
1120 if (data.beacon_device_ts) {
1121 u32 rand = (prandom_u32() % (64 - 36)) + 36;
1122 mvmvif->ap_beacon_time = data.beacon_device_ts +
1123 ieee80211_tu_to_usec(data.beacon_int * rand /
1124 100);
1125 } else {
1126 mvmvif->ap_beacon_time =
1127 iwl_read_prph(mvm->trans,
1128 DEVICE_SYSTEM_TIME_REG);
1129 }
1130 }
1131
1132 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1133 ctxt_ap->beacon_tsf = 0; /* unused */
1134
1135 /* TODO: Assume that the beacon id == mac context id */
1136 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1137}
1138
1139static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1140 struct ieee80211_vif *vif,
1141 u32 action)
1142{
1143 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1144 struct iwl_mac_ctx_cmd cmd = {};
1145
1146 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1147
1148 /* Fill the common data for all mac context types */
1149 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1150
1151 /*
1152 * pass probe requests and beacons from other APs (needed
1153 * for ht protection); when there're no any associated station
1154 * don't ask FW to pass beacons to prevent unnecessary wake-ups.
1155 */
1156 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
1157 if (mvmvif->ap_assoc_sta_count) {
1158 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
1159 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
1160 } else {
1161 IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
1162 }
1163
1164 /* Fill the data specific for ap mode */
1165 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap,
1166 action == FW_CTXT_ACTION_ADD);
1167
1168 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1169}
1170
1171static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1172 struct ieee80211_vif *vif,
1173 u32 action)
1174{
1175 struct iwl_mac_ctx_cmd cmd = {};
1176 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1177
1178 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1179
1180 /* Fill the common data for all mac context types */
1181 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1182
1183 /*
1184 * pass probe requests and beacons from other APs (needed
1185 * for ht protection)
1186 */
1187 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST |
1188 MAC_FILTER_IN_BEACON);
1189
1190 /* Fill the data specific for GO mode */
1191 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap,
1192 action == FW_CTXT_ACTION_ADD);
1193
1194 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1195 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1196 cmd.go.opp_ps_enabled =
1197 cpu_to_le32(!!(noa->oppps_ctwindow &
1198 IEEE80211_P2P_OPPPS_ENABLE_BIT));
1199
1200 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1201}
1202
1203static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1204 u32 action, bool force_assoc_off,
1205 const u8 *bssid_override)
1206{
1207 switch (vif->type) {
1208 case NL80211_IFTYPE_STATION:
1209 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1210 force_assoc_off,
1211 bssid_override);
1212 break;
1213 case NL80211_IFTYPE_AP:
1214 if (!vif->p2p)
1215 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1216 else
1217 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1218 break;
1219 case NL80211_IFTYPE_MONITOR:
1220 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1221 case NL80211_IFTYPE_P2P_DEVICE:
1222 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1223 case NL80211_IFTYPE_ADHOC:
1224 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1225 default:
1226 break;
1227 }
1228
1229 return -EOPNOTSUPP;
1230}
1231
1232int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1233{
1234 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1235 int ret;
1236
1237 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1238 vif->addr, ieee80211_vif_type_p2p(vif)))
1239 return -EIO;
1240
1241 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1242 true, NULL);
1243 if (ret)
1244 return ret;
1245
1246 /* will only do anything at resume from D3 time */
1247 iwl_mvm_set_last_nonqos_seq(mvm, vif);
1248
1249 mvmvif->uploaded = true;
1250 return 0;
1251}
1252
1253int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1254 bool force_assoc_off, const u8 *bssid_override)
1255{
1256 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1257
1258 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1259 vif->addr, ieee80211_vif_type_p2p(vif)))
1260 return -EIO;
1261
1262 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1263 force_assoc_off, bssid_override);
1264}
1265
1266int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1267{
1268 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1269 struct iwl_mac_ctx_cmd cmd;
1270 int ret;
1271
1272 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1273 vif->addr, ieee80211_vif_type_p2p(vif)))
1274 return -EIO;
1275
1276 memset(&cmd, 0, sizeof(cmd));
1277
1278 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1279 mvmvif->color));
1280 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1281
1282 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
1283 sizeof(cmd), &cmd);
1284 if (ret) {
1285 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1286 return ret;
1287 }
1288
1289 mvmvif->uploaded = false;
1290
1291 if (vif->type == NL80211_IFTYPE_MONITOR)
1292 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
1293
1294 return 0;
1295}
1296
1297static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1298 struct ieee80211_vif *csa_vif, u32 gp2,
1299 bool tx_success)
1300{
1301 struct iwl_mvm_vif *mvmvif =
1302 iwl_mvm_vif_from_mac80211(csa_vif);
1303
1304 /* Don't start to countdown from a failed beacon */
1305 if (!tx_success && !mvmvif->csa_countdown)
1306 return;
1307
1308 mvmvif->csa_countdown = true;
1309
1310 if (!ieee80211_csa_is_complete(csa_vif)) {
1311 int c = ieee80211_csa_update_counter(csa_vif);
1312
1313 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif);
1314 if (csa_vif->p2p &&
1315 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
1316 tx_success) {
1317 u32 rel_time = (c + 1) *
1318 csa_vif->bss_conf.beacon_int -
1319 IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1320 u32 apply_time = gp2 + rel_time * 1024;
1321
1322 iwl_mvm_schedule_csa_period(mvm, csa_vif,
1323 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1324 IWL_MVM_CHANNEL_SWITCH_MARGIN,
1325 apply_time);
1326 }
1327 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1328 /* we don't have CSA NoA scheduled yet, switch now */
1329 ieee80211_csa_finish(csa_vif);
1330 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1331 }
1332}
1333
1334void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1335 struct iwl_rx_cmd_buffer *rxb)
1336{
1337 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1338 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1339 struct iwl_mvm_tx_resp *beacon_notify_hdr;
1340 struct ieee80211_vif *csa_vif;
1341 struct ieee80211_vif *tx_blocked_vif;
1342 u16 status;
1343
1344 lockdep_assert_held(&mvm->mutex);
1345
1346 beacon_notify_hdr = &beacon->beacon_notify_hdr;
1347 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1348
1349 status = le16_to_cpu(beacon_notify_hdr->status.status) & TX_STATUS_MSK;
1350 IWL_DEBUG_RX(mvm,
1351 "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n",
1352 status, beacon_notify_hdr->failure_frame,
1353 le64_to_cpu(beacon->tsf),
1354 mvm->ap_last_beacon_gp2,
1355 le32_to_cpu(beacon_notify_hdr->initial_rate));
1356
1357 csa_vif = rcu_dereference_protected(mvm->csa_vif,
1358 lockdep_is_held(&mvm->mutex));
1359 if (unlikely(csa_vif && csa_vif->csa_active))
1360 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
1361 (status == TX_STATUS_SUCCESS));
1362
1363 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1364 lockdep_is_held(&mvm->mutex));
1365 if (unlikely(tx_blocked_vif)) {
1366 struct iwl_mvm_vif *mvmvif =
1367 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1368
1369 /*
1370 * The channel switch is started and we have blocked the
1371 * stations. If this is the first beacon (the timeout wasn't
1372 * set), set the unblock timeout, otherwise countdown
1373 */
1374 if (!mvm->csa_tx_block_bcn_timeout)
1375 mvm->csa_tx_block_bcn_timeout =
1376 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1377 else
1378 mvm->csa_tx_block_bcn_timeout--;
1379
1380 /* Check if the timeout is expired, and unblock tx */
1381 if (mvm->csa_tx_block_bcn_timeout == 0) {
1382 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1383 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1384 }
1385 }
1386}
1387
1388static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac,
1389 struct ieee80211_vif *vif)
1390{
1391 struct iwl_missed_beacons_notif *missed_beacons = _data;
1392 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1393 struct iwl_mvm *mvm = mvmvif->mvm;
1394 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
1395 struct iwl_fw_dbg_trigger_tlv *trigger;
1396 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
1397 u32 rx_missed_bcon, rx_missed_bcon_since_rx;
1398
1399 if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id))
1400 return;
1401
1402 rx_missed_bcon = le32_to_cpu(missed_beacons->consec_missed_beacons);
1403 rx_missed_bcon_since_rx =
1404 le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx);
1405 /*
1406 * TODO: the threshold should be adjusted based on latency conditions,
1407 * and/or in case of a CS flow on one of the other AP vifs.
1408 */
1409 if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) >
1410 IWL_MVM_MISSED_BEACONS_THRESHOLD)
1411 ieee80211_beacon_loss(vif);
1412
1413 if (!iwl_fw_dbg_trigger_enabled(mvm->fw,
1414 FW_DBG_TRIGGER_MISSED_BEACONS))
1415 return;
1416
1417 trigger = iwl_fw_dbg_get_trigger(mvm->fw,
1418 FW_DBG_TRIGGER_MISSED_BEACONS);
1419 bcon_trig = (void *)trigger->data;
1420 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
1421 stop_trig_missed_bcon_since_rx =
1422 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
1423
1424 /* TODO: implement start trigger */
1425
1426 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trigger))
1427 return;
1428
1429 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
1430 rx_missed_bcon >= stop_trig_missed_bcon)
1431 iwl_mvm_fw_dbg_collect_trig(mvm, trigger, NULL);
1432}
1433
1434void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1435 struct iwl_rx_cmd_buffer *rxb)
1436{
1437 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1438 struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
1439
1440 IWL_DEBUG_INFO(mvm,
1441 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1442 le32_to_cpu(mb->mac_id),
1443 le32_to_cpu(mb->consec_missed_beacons),
1444 le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
1445 le32_to_cpu(mb->num_recvd_beacons),
1446 le32_to_cpu(mb->num_expected_beacons));
1447
1448 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1449 IEEE80211_IFACE_ITER_NORMAL,
1450 iwl_mvm_beacon_loss_iterator,
1451 mb);
1452}
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-20 22:25:44 -0500