iwlwifi: mvm: Set RRM_ENABLED bit in scan commands
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac-ctxt.c
CommitLineData
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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
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10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
410dc5aa 26 * in the file called COPYING.
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27 *
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
51368bf7 34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc 35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65
66#include <linux/etherdevice.h>
67#include <net/mac80211.h>
68#include "iwl-io.h"
69#include "iwl-prph.h"
70#include "fw-api.h"
71#include "mvm.h"
7f0a7c67 72#include "time-event.h"
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73
74const u8 iwl_mvm_ac_to_tx_fifo[] = {
8ca151b5 75 IWL_MVM_TX_FIFO_VO,
3dd94794
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76 IWL_MVM_TX_FIFO_VI,
77 IWL_MVM_TX_FIFO_BE,
78 IWL_MVM_TX_FIFO_BK,
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79};
80
81struct iwl_mvm_mac_iface_iterator_data {
82 struct iwl_mvm *mvm;
83 struct ieee80211_vif *vif;
84 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];
85 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];
110cf810 86 u32 used_hw_queues;
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87 enum iwl_tsf_id preferred_tsf;
88 bool found_vif;
89};
90
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91static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,
92 struct ieee80211_vif *vif)
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93{
94 struct iwl_mvm_mac_iface_iterator_data *data = _data;
95 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2c3e62a1 96 u16 min_bi;
8ca151b5 97
6e97b0d2
IP
98 /* Skip the interface for which we are trying to assign a tsf_id */
99 if (vif == data->vif)
8ca151b5 100 return;
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101
102 /*
103 * The TSF is a hardware/firmware resource, there are 4 and
104 * the driver should assign and free them as needed. However,
105 * there are cases where 2 MACs should share the same TSF ID
106 * for the purpose of clock sync, an optimization to avoid
107 * clock drift causing overlapping TBTTs/DTIMs for a GO and
108 * client in the system.
109 *
110 * The firmware will decide according to the MAC type which
111 * will be the master and slave. Clients that need to sync
112 * with a remote station will be the master, and an AP or GO
113 * will be the slave.
114 *
115 * Depending on the new interface type it can be slaved to
116 * or become the master of an existing interface.
117 */
118 switch (data->vif->type) {
119 case NL80211_IFTYPE_STATION:
120 /*
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121 * The new interface is a client, so if the one we're iterating
122 * is an AP, and the beacon interval of the AP is a multiple or
123 * divisor of the beacon interval of the client, the same TSF
124 * should be used to avoid drift between the new client and
125 * existing AP. The existing AP will get drift updates from the
126 * new client context in this case.
8ca151b5 127 */
2c3e62a1
IP
128 if (vif->type != NL80211_IFTYPE_AP ||
129 data->preferred_tsf != NUM_TSF_IDS ||
130 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
131 break;
132
133 min_bi = min(data->vif->bss_conf.beacon_int,
134 vif->bss_conf.beacon_int);
135
136 if (!min_bi)
137 break;
138
139 if ((data->vif->bss_conf.beacon_int -
140 vif->bss_conf.beacon_int) % min_bi == 0) {
141 data->preferred_tsf = mvmvif->tsf_id;
142 return;
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143 }
144 break;
2c3e62a1 145
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146 case NL80211_IFTYPE_AP:
147 /*
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IP
148 * The new interface is AP/GO, so if its beacon interval is a
149 * multiple or a divisor of the beacon interval of an existing
150 * interface, it should get drift updates from an existing
151 * client or use the same TSF as an existing GO. There's no
152 * drift between TSFs internally but if they used different
153 * TSFs then a new client MAC could update one of them and
154 * cause drift that way.
8ca151b5 155 */
2c3e62a1
IP
156 if ((vif->type != NL80211_IFTYPE_AP &&
157 vif->type != NL80211_IFTYPE_STATION) ||
158 data->preferred_tsf != NUM_TSF_IDS ||
159 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
160 break;
161
162 min_bi = min(data->vif->bss_conf.beacon_int,
163 vif->bss_conf.beacon_int);
164
165 if (!min_bi)
166 break;
167
168 if ((data->vif->bss_conf.beacon_int -
169 vif->bss_conf.beacon_int) % min_bi == 0) {
170 data->preferred_tsf = mvmvif->tsf_id;
171 return;
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172 }
173 break;
174 default:
175 /*
176 * For all other interface types there's no need to
177 * take drift into account. Either they're exclusive
178 * like IBSS and monitor, or we don't care much about
179 * their TSF (like P2P Device), but we won't be able
180 * to share the TSF resource.
181 */
182 break;
183 }
184
185 /*
186 * Unless we exited above, we can't share the TSF resource
187 * that the virtual interface we're iterating over is using
188 * with the new one, so clear the available bit and if this
189 * was the preferred one, reset that as well.
190 */
191 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
192
193 if (data->preferred_tsf == mvmvif->tsf_id)
194 data->preferred_tsf = NUM_TSF_IDS;
195}
196
110cf810
JB
197/*
198 * Get the mask of the queues used by the vif
199 */
200u32 iwl_mvm_mac_get_queues_mask(struct iwl_mvm *mvm,
201 struct ieee80211_vif *vif)
202{
203 u32 qmask = 0, ac;
204
205 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
206 return BIT(IWL_MVM_OFFCHANNEL_QUEUE);
207
208 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
209 qmask |= BIT(vif->hw_queue[ac]);
210
211 if (vif->type == NL80211_IFTYPE_AP)
212 qmask |= BIT(vif->cab_queue);
213
214 return qmask;
215}
216
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217static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
218 struct ieee80211_vif *vif)
219{
220 struct iwl_mvm_mac_iface_iterator_data *data = _data;
221 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
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IP
222
223 /* Iterator may already find the interface being added -- skip it */
224 if (vif == data->vif) {
225 data->found_vif = true;
226 return;
227 }
228
229 /* Mark the queues used by the vif */
110cf810 230 data->used_hw_queues |= iwl_mvm_mac_get_queues_mask(data->mvm, vif);
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IP
231
232 /* Mark MAC IDs as used by clearing the available bit, and
233 * (below) mark TSFs as used if their existing use is not
234 * compatible with the new interface type.
235 * No locking or atomic bit operations are needed since the
236 * data is on the stack of the caller function.
237 */
238 __clear_bit(mvmvif->id, data->available_mac_ids);
239
240 /* find a suitable tsf_id */
241 iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
242}
243
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IP
244void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
245 struct ieee80211_vif *vif)
246{
247 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
248 struct iwl_mvm_mac_iface_iterator_data data = {
249 .mvm = mvm,
250 .vif = vif,
251 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
252 /* no preference yet */
253 .preferred_tsf = NUM_TSF_IDS,
254 };
255
256 ieee80211_iterate_active_interfaces_atomic(
257 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
258 iwl_mvm_mac_tsf_id_iter, &data);
259
260 if (data.preferred_tsf != NUM_TSF_IDS)
261 mvmvif->tsf_id = data.preferred_tsf;
262 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))
263 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
264 NUM_TSF_IDS);
265}
266
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267static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm,
268 struct ieee80211_vif *vif)
269{
270 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
271 struct iwl_mvm_mac_iface_iterator_data data = {
272 .mvm = mvm,
273 .vif = vif,
274 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
275 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
276 /* no preference yet */
277 .preferred_tsf = NUM_TSF_IDS,
110cf810 278 .used_hw_queues =
8ca151b5 279 BIT(IWL_MVM_OFFCHANNEL_QUEUE) |
19e737c9 280 BIT(mvm->aux_queue) |
110cf810 281 BIT(IWL_MVM_CMD_QUEUE),
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282 .found_vif = false,
283 };
284 u32 ac;
9ee718aa 285 int ret, i;
110cf810 286 unsigned long used_hw_queues;
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287
288 /*
289 * Allocate a MAC ID and a TSF for this MAC, along with the queues
290 * and other resources.
291 */
292
293 /*
294 * Before the iterator, we start with all MAC IDs and TSFs available.
295 *
296 * During iteration, all MAC IDs are cleared that are in use by other
297 * virtual interfaces, and all TSF IDs are cleared that can't be used
298 * by this new virtual interface because they're used by an interface
299 * that can't share it with the new one.
300 * At the same time, we check if there's a preferred TSF in the case
301 * that we should share it with another interface.
302 */
303
5023d966
JB
304 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
305 switch (vif->type) {
306 case NL80211_IFTYPE_ADHOC:
307 break;
308 case NL80211_IFTYPE_STATION:
309 if (!vif->p2p)
310 break;
311 /* fall through */
312 default:
ec8b6885 313 __clear_bit(0, data.available_mac_ids);
5023d966 314 }
ec8b6885 315
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316 ieee80211_iterate_active_interfaces_atomic(
317 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
318 iwl_mvm_mac_iface_iterator, &data);
319
320 /*
321 * In the case we're getting here during resume, it's similar to
322 * firmware restart, and with RESUME_ALL the iterator will find
323 * the vif being added already.
324 * We don't want to reassign any IDs in either case since doing
325 * so would probably assign different IDs (as interfaces aren't
326 * necessarily added in the same order), but the old IDs were
327 * preserved anyway, so skip ID assignment for both resume and
328 * recovery.
329 */
330 if (data.found_vif)
331 return 0;
332
333 /* Therefore, in recovery, we can't get here */
fd11bd05
IP
334 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
335 return -EBUSY;
8ca151b5
JB
336
337 mvmvif->id = find_first_bit(data.available_mac_ids,
338 NUM_MAC_INDEX_DRIVER);
339 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
340 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
341 ret = -EIO;
342 goto exit_fail;
343 }
344
345 if (data.preferred_tsf != NUM_TSF_IDS)
346 mvmvif->tsf_id = data.preferred_tsf;
347 else
348 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
349 NUM_TSF_IDS);
350 if (mvmvif->tsf_id == NUM_TSF_IDS) {
351 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
352 ret = -EIO;
353 goto exit_fail;
354 }
355
356 mvmvif->color = 0;
357
1e849c93
IP
358 INIT_LIST_HEAD(&mvmvif->time_event_data.list);
359 mvmvif->time_event_data.id = TE_MAX;
360
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361 /* No need to allocate data queues to P2P Device MAC.*/
362 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
363 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
364 vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE;
365
366 return 0;
367 }
368
110cf810
JB
369 used_hw_queues = data.used_hw_queues;
370
8ca151b5
JB
371 /* Find available queues, and allocate them to the ACs */
372 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
110cf810 373 u8 queue = find_first_zero_bit(&used_hw_queues,
19e737c9 374 mvm->first_agg_queue);
8ca151b5 375
19e737c9 376 if (queue >= mvm->first_agg_queue) {
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JB
377 IWL_ERR(mvm, "Failed to allocate queue\n");
378 ret = -EIO;
379 goto exit_fail;
380 }
381
110cf810 382 __set_bit(queue, &used_hw_queues);
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383 vif->hw_queue[ac] = queue;
384 }
385
386 /* Allocate the CAB queue for softAP and GO interfaces */
387 if (vif->type == NL80211_IFTYPE_AP) {
110cf810 388 u8 queue = find_first_zero_bit(&used_hw_queues,
19e737c9 389 mvm->first_agg_queue);
8ca151b5 390
19e737c9 391 if (queue >= mvm->first_agg_queue) {
8ca151b5
JB
392 IWL_ERR(mvm, "Failed to allocate cab queue\n");
393 ret = -EIO;
394 goto exit_fail;
395 }
396
397 vif->cab_queue = queue;
398 } else {
399 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
400 }
401
402 mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT;
403 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
404
9ee718aa
EL
405 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
406 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
407
8ca151b5
JB
408 return 0;
409
410exit_fail:
411 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
412 memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue));
413 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
414 return ret;
415}
416
417int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
418{
419 u32 ac;
420 int ret;
421
422 lockdep_assert_held(&mvm->mutex);
423
424 ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif);
425 if (ret)
426 return ret;
427
428 switch (vif->type) {
429 case NL80211_IFTYPE_P2P_DEVICE:
430 iwl_trans_ac_txq_enable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE,
431 IWL_MVM_TX_FIFO_VO);
432 break;
433 case NL80211_IFTYPE_AP:
434 iwl_trans_ac_txq_enable(mvm->trans, vif->cab_queue,
86a91ec7 435 IWL_MVM_TX_FIFO_MCAST);
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JB
436 /* fall through */
437 default:
438 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
439 iwl_trans_ac_txq_enable(mvm->trans, vif->hw_queue[ac],
440 iwl_mvm_ac_to_tx_fifo[ac]);
441 break;
442 }
443
444 return 0;
445}
446
447void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
448{
449 int ac;
450
451 lockdep_assert_held(&mvm->mutex);
452
453 switch (vif->type) {
454 case NL80211_IFTYPE_P2P_DEVICE:
d4578ea8
JB
455 iwl_trans_txq_disable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE,
456 true);
8ca151b5
JB
457 break;
458 case NL80211_IFTYPE_AP:
d4578ea8 459 iwl_trans_txq_disable(mvm->trans, vif->cab_queue, true);
8ca151b5
JB
460 /* fall through */
461 default:
462 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
d4578ea8
JB
463 iwl_trans_txq_disable(mvm->trans, vif->hw_queue[ac],
464 true);
8ca151b5
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465 }
466}
467
468static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
469 struct ieee80211_vif *vif,
470 enum ieee80211_band band,
471 u8 *cck_rates, u8 *ofdm_rates)
472{
473 struct ieee80211_supported_band *sband;
474 unsigned long basic = vif->bss_conf.basic_rates;
475 int lowest_present_ofdm = 100;
476 int lowest_present_cck = 100;
477 u8 cck = 0;
478 u8 ofdm = 0;
479 int i;
480
481 sband = mvm->hw->wiphy->bands[band];
482
483 for_each_set_bit(i, &basic, BITS_PER_LONG) {
484 int hw = sband->bitrates[i].hw_value;
485 if (hw >= IWL_FIRST_OFDM_RATE) {
486 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
487 if (lowest_present_ofdm > hw)
488 lowest_present_ofdm = hw;
489 } else {
490 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
491
492 cck |= BIT(hw);
493 if (lowest_present_cck > hw)
494 lowest_present_cck = hw;
495 }
496 }
497
498 /*
499 * Now we've got the basic rates as bitmaps in the ofdm and cck
500 * variables. This isn't sufficient though, as there might not
501 * be all the right rates in the bitmap. E.g. if the only basic
502 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
503 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
504 *
505 * [...] a STA responding to a received frame shall transmit
506 * its Control Response frame [...] at the highest rate in the
507 * BSSBasicRateSet parameter that is less than or equal to the
508 * rate of the immediately previous frame in the frame exchange
509 * sequence ([...]) and that is of the same modulation class
510 * ([...]) as the received frame. If no rate contained in the
511 * BSSBasicRateSet parameter meets these conditions, then the
512 * control frame sent in response to a received frame shall be
513 * transmitted at the highest mandatory rate of the PHY that is
514 * less than or equal to the rate of the received frame, and
515 * that is of the same modulation class as the received frame.
516 *
517 * As a consequence, we need to add all mandatory rates that are
518 * lower than all of the basic rates to these bitmaps.
519 */
520
521 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
522 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
523 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
524 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
525 /* 6M already there or needed so always add */
526 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
527
528 /*
529 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
530 * Note, however:
531 * - if no CCK rates are basic, it must be ERP since there must
532 * be some basic rates at all, so they're OFDM => ERP PHY
533 * (or we're in 5 GHz, and the cck bitmap will never be used)
534 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
535 * - if 5.5M is basic, 1M and 2M are mandatory
536 * - if 2M is basic, 1M is mandatory
537 * - if 1M is basic, that's the only valid ACK rate.
538 * As a consequence, it's not as complicated as it sounds, just add
539 * any lower rates to the ACK rate bitmap.
540 */
541 if (IWL_RATE_11M_INDEX < lowest_present_cck)
542 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
543 if (IWL_RATE_5M_INDEX < lowest_present_cck)
544 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
545 if (IWL_RATE_2M_INDEX < lowest_present_cck)
546 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
547 /* 1M already there or needed so always add */
548 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
549
550 *cck_rates = cck;
551 *ofdm_rates = ofdm;
552}
553
8a5e3660
AA
554static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm,
555 struct ieee80211_vif *vif,
556 struct iwl_mac_ctx_cmd *cmd)
557{
558 /* for both sta and ap, ht_operation_mode hold the protection_mode */
559 u8 protection_mode = vif->bss_conf.ht_operation_mode &
560 IEEE80211_HT_OP_MODE_PROTECTION;
561 /* The fw does not distinguish between ht and fat */
562 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
563
564 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
565 /*
566 * See section 9.23.3.1 of IEEE 80211-2012.
567 * Nongreenfield HT STAs Present is not supported.
568 */
569 switch (protection_mode) {
570 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
571 break;
572 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
573 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
574 cmd->protection_flags |= cpu_to_le32(ht_flag);
575 break;
576 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
577 /* Protect when channel wider than 20MHz */
578 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20)
579 cmd->protection_flags |= cpu_to_le32(ht_flag);
580 break;
581 default:
582 IWL_ERR(mvm, "Illegal protection mode %d\n",
583 protection_mode);
584 break;
585 }
586}
587
8ca151b5
JB
588static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
589 struct ieee80211_vif *vif,
590 struct iwl_mac_ctx_cmd *cmd,
3dfd3a97 591 const u8 *bssid_override,
8ca151b5
JB
592 u32 action)
593{
594 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
595 struct ieee80211_chanctx_conf *chanctx;
8a5e3660
AA
596 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode &
597 IEEE80211_HT_OP_MODE_PROTECTION);
8ca151b5 598 u8 cck_ack_rates, ofdm_ack_rates;
3dfd3a97 599 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
8ca151b5
JB
600 int i;
601
602 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
603 mvmvif->color));
604 cmd->action = cpu_to_le32(action);
605
606 switch (vif->type) {
607 case NL80211_IFTYPE_STATION:
608 if (vif->p2p)
609 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
610 else
611 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
612 break;
613 case NL80211_IFTYPE_AP:
614 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
615 break;
616 case NL80211_IFTYPE_MONITOR:
617 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
618 break;
619 case NL80211_IFTYPE_P2P_DEVICE:
620 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
621 break;
622 case NL80211_IFTYPE_ADHOC:
623 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
624 break;
625 default:
626 WARN_ON_ONCE(1);
627 }
628
629 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
630
631 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
3dfd3a97
JB
632
633 if (bssid)
634 memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
8ca151b5
JB
635 else
636 eth_broadcast_addr(cmd->bssid_addr);
637
638 rcu_read_lock();
639 chanctx = rcu_dereference(vif->chanctx_conf);
640 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
641 : IEEE80211_BAND_2GHZ,
642 &cck_ack_rates, &ofdm_ack_rates);
643 rcu_read_unlock();
644
645 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
646 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
647
648 cmd->cck_short_preamble =
649 cpu_to_le32(vif->bss_conf.use_short_preamble ?
650 MAC_FLG_SHORT_PREAMBLE : 0);
651 cmd->short_slot =
652 cpu_to_le32(vif->bss_conf.use_short_slot ?
653 MAC_FLG_SHORT_SLOT : 0);
654
3dd94794
EG
655 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
656 u8 txf = iwl_mvm_ac_to_tx_fifo[i];
657
658 cmd->ac[txf].cw_min =
659 cpu_to_le16(mvmvif->queue_params[i].cw_min);
660 cmd->ac[txf].cw_max =
661 cpu_to_le16(mvmvif->queue_params[i].cw_max);
662 cmd->ac[txf].edca_txop =
8ca151b5 663 cpu_to_le16(mvmvif->queue_params[i].txop * 32);
3dd94794
EG
664 cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs;
665 cmd->ac[txf].fifos_mask = BIT(txf);
8ca151b5
JB
666 }
667
86a91ec7
EG
668 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
669 if (vif->type == NL80211_IFTYPE_AP)
3dd94794
EG
670 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |=
671 BIT(IWL_MVM_TX_FIFO_MCAST);
86a91ec7 672
8ca151b5
JB
673 if (vif->bss_conf.qos)
674 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
675
dc271ee0 676 if (vif->bss_conf.use_cts_prot)
cc7ee2ba 677 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
dc271ee0 678
8a5e3660
AA
679 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
680 vif->bss_conf.use_cts_prot,
681 vif->bss_conf.ht_operation_mode);
682 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
8ca151b5 683 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
8a5e3660
AA
684 if (ht_enabled)
685 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd);
8ca151b5
JB
686
687 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
688}
689
690static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
691 struct iwl_mac_ctx_cmd *cmd)
692{
a1022927 693 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
8ca151b5
JB
694 sizeof(*cmd), cmd);
695 if (ret)
696 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
697 le32_to_cpu(cmd->action), ret);
698 return ret;
699}
700
cf52023c
LC
701static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
702 struct ieee80211_vif *vif,
3dfd3a97
JB
703 u32 action, bool force_assoc_off,
704 const u8 *bssid_override)
8ca151b5 705{
cf52023c
LC
706 struct iwl_mac_ctx_cmd cmd = {};
707 struct iwl_mac_data_sta *ctxt_sta;
708
709 WARN_ON(vif->type != NL80211_IFTYPE_STATION);
710
711 /* Fill the common data for all mac context types */
3dfd3a97 712 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
cf52023c
LC
713
714 if (vif->p2p) {
715 struct ieee80211_p2p_noa_attr *noa =
716 &vif->bss_conf.p2p_noa_attr;
717
718 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow &
719 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
720 ctxt_sta = &cmd.p2p_sta.sta;
721 } else {
cf52023c
LC
722 ctxt_sta = &cmd.sta;
723 }
724
210a544e 725 /* We need the dtim_period to set the MAC as associated */
ba283927
AB
726 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period &&
727 !force_assoc_off) {
d2931bbd
JB
728 u32 dtim_offs;
729
730 /*
731 * The DTIM count counts down, so when it is N that means N
732 * more beacon intervals happen until the DTIM TBTT. Therefore
733 * add this to the current time. If that ends up being in the
734 * future, the firmware will handle it.
735 *
736 * Also note that the system_timestamp (which we get here as
737 * "sync_device_ts") and TSF timestamp aren't at exactly the
738 * same offset in the frame -- the TSF is at the first symbol
739 * of the TSF, the system timestamp is at signal acquisition
740 * time. This means there's an offset between them of at most
741 * a few hundred microseconds (24 * 8 bits + PLCP time gives
742 * 384us in the longest case), this is currently not relevant
743 * as the firmware wakes up around 2ms before the TBTT.
744 */
745 dtim_offs = vif->bss_conf.sync_dtim_count *
746 vif->bss_conf.beacon_int;
747 /* convert TU to usecs */
748 dtim_offs *= 1024;
749
750 ctxt_sta->dtim_tsf =
751 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
752 ctxt_sta->dtim_time =
753 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
754
755 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
756 le64_to_cpu(ctxt_sta->dtim_tsf),
757 le32_to_cpu(ctxt_sta->dtim_time),
758 dtim_offs);
759
210a544e 760 ctxt_sta->is_assoc = cpu_to_le32(1);
d2931bbd 761 } else {
210a544e 762 ctxt_sta->is_assoc = cpu_to_le32(0);
7c8b3bc6
LC
763
764 /* Allow beacons to pass through as long as we are not
765 * associated, or we do not have dtim period information.
766 */
767 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
d2931bbd 768 }
8ca151b5
JB
769
770 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
771 ctxt_sta->bi_reciprocal =
772 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
773 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
774 vif->bss_conf.dtim_period);
775 ctxt_sta->dtim_reciprocal =
776 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
777 vif->bss_conf.dtim_period));
778
779 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
780 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
8ca151b5
JB
781
782 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
783}
784
785static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
786 struct ieee80211_vif *vif,
787 u32 action)
788{
789 struct iwl_mac_ctx_cmd cmd = {};
790
791 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
792
3dfd3a97 793 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
53585495
JB
794
795 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
796 MAC_FILTER_IN_CONTROL_AND_MGMT |
797 MAC_FILTER_IN_BEACON |
fb8b8ee1
JB
798 MAC_FILTER_IN_PROBE_REQUEST |
799 MAC_FILTER_IN_CRC32);
800 mvm->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
53585495 801
8ca151b5
JB
802 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
803}
804
5023d966
JB
805static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
806 struct ieee80211_vif *vif,
807 u32 action)
808{
809 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
810 struct iwl_mac_ctx_cmd cmd = {};
811
812 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
813
3dfd3a97 814 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
5023d966
JB
815
816 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
817 MAC_FILTER_IN_PROBE_REQUEST);
818
819 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
820 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
821 cmd.ibss.bi_reciprocal =
822 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
823
824 /* TODO: Assumes that the beacon id == mac context id */
825 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
826
827 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
828}
829
8ca151b5
JB
830struct iwl_mvm_go_iterator_data {
831 bool go_active;
832};
833
834static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
835{
836 struct iwl_mvm_go_iterator_data *data = _data;
837 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
838
5023d966
JB
839 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
840 mvmvif->ap_ibss_active)
8ca151b5
JB
841 data->go_active = true;
842}
843
844static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
845 struct ieee80211_vif *vif,
846 u32 action)
847{
848 struct iwl_mac_ctx_cmd cmd = {};
849 struct iwl_mvm_go_iterator_data data = {};
850
851 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
852
3dfd3a97 853 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
8ca151b5
JB
854
855 cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
1dcd15ee
IP
856
857 /* Override the filter flags to accept only probe requests */
858 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
8ca151b5
JB
859
860 /*
861 * This flag should be set to true when the P2P Device is
862 * discoverable and there is at least another active P2P GO. Settings
863 * this flag will allow the P2P Device to be discoverable on other
864 * channels in addition to its listen channel.
865 * Note that this flag should not be set in other cases as it opens the
866 * Rx filters on all MAC and increases the number of interrupts.
867 */
868 ieee80211_iterate_active_interfaces_atomic(
869 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
870 iwl_mvm_go_iterator, &data);
871
872 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
873 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
874}
875
876static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
877 struct iwl_mac_beacon_cmd *beacon_cmd,
878 u8 *beacon, u32 frame_size)
879{
880 u32 tim_idx;
881 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
882
883 /* The index is relative to frame start but we start looking at the
884 * variable-length part of the beacon. */
885 tim_idx = mgmt->u.beacon.variable - beacon;
886
887 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
888 while ((tim_idx < (frame_size - 2)) &&
889 (beacon[tim_idx] != WLAN_EID_TIM))
890 tim_idx += beacon[tim_idx+1] + 2;
891
892 /* If TIM field was found, set variables */
893 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
894 beacon_cmd->tim_idx = cpu_to_le32(tim_idx);
895 beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]);
896 } else {
897 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
898 }
899}
900
901static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
902 struct ieee80211_vif *vif,
903 struct sk_buff *beacon)
904{
905 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
906 struct iwl_host_cmd cmd = {
907 .id = BEACON_TEMPLATE_CMD,
908 .flags = CMD_ASYNC,
909 };
910 struct iwl_mac_beacon_cmd beacon_cmd = {};
911 struct ieee80211_tx_info *info;
912 u32 beacon_skb_len;
75f6b9b6 913 u32 rate, tx_flags;
8ca151b5
JB
914
915 if (WARN_ON(!beacon))
916 return -EINVAL;
917
918 beacon_skb_len = beacon->len;
919
920 /* TODO: for now the beacon template id is set to be the mac context id.
921 * Might be better to handle it as another resource ... */
922 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
75f6b9b6 923 info = IEEE80211_SKB_CB(beacon);
8ca151b5
JB
924
925 /* Set up TX command fields */
926 beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len);
927 beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id;
928 beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
75f6b9b6
EG
929 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
930 tx_flags |=
931 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
932 TX_CMD_FLG_BT_PRIO_POS;
933 beacon_cmd.tx.tx_flags = cpu_to_le32(tx_flags);
8ca151b5
JB
934
935 mvm->mgmt_last_antenna_idx =
4ed735e7 936 iwl_mvm_next_antenna(mvm, mvm->fw->valid_tx_ant,
8ca151b5
JB
937 mvm->mgmt_last_antenna_idx);
938
939 beacon_cmd.tx.rate_n_flags =
940 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
941 RATE_MCS_ANT_POS);
942
8ca151b5
JB
943 if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) {
944 rate = IWL_FIRST_OFDM_RATE;
945 } else {
946 rate = IWL_FIRST_CCK_RATE;
947 beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
948 }
949 beacon_cmd.tx.rate_n_flags |=
950 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
951
952 /* Set up TX beacon command fields */
5023d966
JB
953 if (vif->type == NL80211_IFTYPE_AP)
954 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd,
955 beacon->data,
956 beacon_skb_len);
8ca151b5
JB
957
958 /* Submit command */
959 cmd.len[0] = sizeof(beacon_cmd);
960 cmd.data[0] = &beacon_cmd;
961 cmd.dataflags[0] = 0;
962 cmd.len[1] = beacon_skb_len;
963 cmd.data[1] = beacon->data;
964 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
965
966 return iwl_mvm_send_cmd(mvm, &cmd);
967}
968
5023d966 969/* The beacon template for the AP/GO/IBSS has changed and needs update */
8ca151b5
JB
970int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
971 struct ieee80211_vif *vif)
972{
973 struct sk_buff *beacon;
974 int ret;
975
5023d966
JB
976 WARN_ON(vif->type != NL80211_IFTYPE_AP &&
977 vif->type != NL80211_IFTYPE_ADHOC);
8ca151b5 978
fe887665 979 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL);
8ca151b5
JB
980 if (!beacon)
981 return -ENOMEM;
982
983 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
984 dev_kfree_skb(beacon);
985 return ret;
986}
987
3a3cb92e
IP
988struct iwl_mvm_mac_ap_iterator_data {
989 struct iwl_mvm *mvm;
990 struct ieee80211_vif *vif;
991 u32 beacon_device_ts;
992 u16 beacon_int;
993};
994
995/* Find the beacon_device_ts and beacon_int for a managed interface */
996static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
997 struct ieee80211_vif *vif)
998{
999 struct iwl_mvm_mac_ap_iterator_data *data = _data;
1000
1001 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
1002 return;
1003
1004 /* Station client has higher priority over P2P client*/
1005 if (vif->p2p && data->beacon_device_ts)
1006 return;
1007
1008 data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1009 data->beacon_int = vif->bss_conf.beacon_int;
1010}
1011
8ca151b5
JB
1012/*
1013 * Fill the specific data for mac context of type AP of P2P GO
1014 */
1015static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1016 struct ieee80211_vif *vif,
506a81e6
JB
1017 struct iwl_mac_data_ap *ctxt_ap,
1018 bool add)
8ca151b5
JB
1019{
1020 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3a3cb92e
IP
1021 struct iwl_mvm_mac_ap_iterator_data data = {
1022 .mvm = mvm,
1023 .vif = vif,
1024 .beacon_device_ts = 0
1025 };
8ca151b5
JB
1026
1027 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1028 ctxt_ap->bi_reciprocal =
1029 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
1030 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1031 vif->bss_conf.dtim_period);
1032 ctxt_ap->dtim_reciprocal =
1033 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
1034 vif->bss_conf.dtim_period));
1035
1036 ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue);
8ca151b5 1037
506a81e6 1038 /*
3a3cb92e 1039 * Only set the beacon time when the MAC is being added, when we
506a81e6
JB
1040 * just modify the MAC then we should keep the time -- the firmware
1041 * can otherwise have a "jumping" TBTT.
1042 */
3a3cb92e
IP
1043 if (add) {
1044 /*
1045 * If there is a station/P2P client interface which is
1046 * associated, set the AP's TBTT far enough from the station's
1047 * TBTT. Otherwise, set it to the current system time
1048 */
1049 ieee80211_iterate_active_interfaces_atomic(
1050 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1051 iwl_mvm_mac_ap_iterator, &data);
1052
1053 if (data.beacon_device_ts) {
9f8f8ca5 1054 u32 rand = (prandom_u32() % (64 - 36)) + 36;
3a3cb92e
IP
1055 mvmvif->ap_beacon_time = data.beacon_device_ts +
1056 ieee80211_tu_to_usec(data.beacon_int * rand /
1057 100);
1058 } else {
1059 mvmvif->ap_beacon_time =
1060 iwl_read_prph(mvm->trans,
1061 DEVICE_SYSTEM_TIME_REG);
1062 }
1063 }
506a81e6
JB
1064
1065 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
506a81e6 1066 ctxt_ap->beacon_tsf = 0; /* unused */
8ca151b5
JB
1067
1068 /* TODO: Assume that the beacon id == mac context id */
1069 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1070}
1071
1072static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1073 struct ieee80211_vif *vif,
1074 u32 action)
1075{
1076 struct iwl_mac_ctx_cmd cmd = {};
1077
1078 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1079
1080 /* Fill the common data for all mac context types */
3dfd3a97 1081 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
8ca151b5 1082
46018794
EP
1083 /*
1084 * pass probe requests and beacons from other APs (needed
1085 * for ht protection)
1086 */
1087 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST |
1088 MAC_FILTER_IN_BEACON);
1dcd15ee 1089
8ca151b5 1090 /* Fill the data specific for ap mode */
506a81e6
JB
1091 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap,
1092 action == FW_CTXT_ACTION_ADD);
8ca151b5
JB
1093
1094 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1095}
1096
1097static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1098 struct ieee80211_vif *vif,
1099 u32 action)
1100{
1101 struct iwl_mac_ctx_cmd cmd = {};
67baf663 1102 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
8ca151b5
JB
1103
1104 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1105
1106 /* Fill the common data for all mac context types */
3dfd3a97 1107 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
8ca151b5 1108
46018794
EP
1109 /*
1110 * pass probe requests and beacons from other APs (needed
1111 * for ht protection)
1112 */
1113 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST |
1114 MAC_FILTER_IN_BEACON);
1115
8ca151b5 1116 /* Fill the data specific for GO mode */
506a81e6
JB
1117 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap,
1118 action == FW_CTXT_ACTION_ADD);
8ca151b5 1119
67baf663
JD
1120 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1121 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1122 cmd.go.opp_ps_enabled =
1123 cpu_to_le32(!!(noa->oppps_ctwindow &
1124 IEEE80211_P2P_OPPPS_ENABLE_BIT));
8ca151b5
JB
1125
1126 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1127}
1128
1129static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3dfd3a97
JB
1130 u32 action, bool force_assoc_off,
1131 const u8 *bssid_override)
8ca151b5
JB
1132{
1133 switch (vif->type) {
1134 case NL80211_IFTYPE_STATION:
cf52023c 1135 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
3dfd3a97
JB
1136 force_assoc_off,
1137 bssid_override);
8ca151b5
JB
1138 break;
1139 case NL80211_IFTYPE_AP:
1140 if (!vif->p2p)
1141 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1142 else
1143 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1144 break;
1145 case NL80211_IFTYPE_MONITOR:
1146 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1147 case NL80211_IFTYPE_P2P_DEVICE:
1148 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
5023d966
JB
1149 case NL80211_IFTYPE_ADHOC:
1150 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
8ca151b5
JB
1151 default:
1152 break;
1153 }
1154
1155 return -EOPNOTSUPP;
1156}
1157
1158int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1159{
1160 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1161 int ret;
1162
1163 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1164 vif->addr, ieee80211_vif_type_p2p(vif)))
1165 return -EIO;
1166
bca49d9a 1167 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
3dfd3a97 1168 true, NULL);
8ca151b5
JB
1169 if (ret)
1170 return ret;
1171
6d9d32b8
JB
1172 /* will only do anything at resume from D3 time */
1173 iwl_mvm_set_last_nonqos_seq(mvm, vif);
1174
8ca151b5
JB
1175 mvmvif->uploaded = true;
1176 return 0;
1177}
1178
bca49d9a 1179int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3dfd3a97 1180 bool force_assoc_off, const u8 *bssid_override)
8ca151b5
JB
1181{
1182 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1183
1184 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1185 vif->addr, ieee80211_vif_type_p2p(vif)))
1186 return -EIO;
1187
bca49d9a 1188 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
3dfd3a97 1189 force_assoc_off, bssid_override);
8ca151b5
JB
1190}
1191
1192int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1193{
1194 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1195 struct iwl_mac_ctx_cmd cmd;
1196 int ret;
1197
1198 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1199 vif->addr, ieee80211_vif_type_p2p(vif)))
1200 return -EIO;
1201
1202 memset(&cmd, 0, sizeof(cmd));
1203
1204 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1205 mvmvif->color));
1206 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1207
a1022927 1208 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
8ca151b5
JB
1209 sizeof(cmd), &cmd);
1210 if (ret) {
1211 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1212 return ret;
1213 }
1214
1215 mvmvif->uploaded = false;
fb8b8ee1
JB
1216
1217 if (vif->type == NL80211_IFTYPE_MONITOR)
1218 mvm->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1219
8ca151b5
JB
1220 return 0;
1221}
571765c8 1222
7f0a7c67
AO
1223static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1224 struct ieee80211_vif *csa_vif, u32 gp2)
1225{
1226 struct iwl_mvm_vif *mvmvif =
1227 iwl_mvm_vif_from_mac80211(csa_vif);
1228
1229 if (!ieee80211_csa_is_complete(csa_vif)) {
1230 int c = ieee80211_csa_update_counter(csa_vif);
1231
1232 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif);
1233 if (csa_vif->p2p &&
1234 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2) {
1235 u32 rel_time = (c + 1) *
1236 csa_vif->bss_conf.beacon_int -
f991e17b 1237 IWL_MVM_CHANNEL_SWITCH_TIME_GO;
7f0a7c67
AO
1238 u32 apply_time = gp2 + rel_time * 1024;
1239
f991e17b
LC
1240 iwl_mvm_schedule_csa_period(mvm, csa_vif,
1241 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1242 IWL_MVM_CHANNEL_SWITCH_MARGIN,
1243 apply_time);
7f0a7c67
AO
1244 }
1245 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1246 /* we don't have CSA NoA scheduled yet, switch now */
1247 ieee80211_csa_finish(csa_vif);
1248 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1249 }
1250}
1251
571765c8
IP
1252int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1253 struct iwl_rx_cmd_buffer *rxb,
1254 struct iwl_device_cmd *cmd)
1255{
1256 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1c87bbad 1257 struct iwl_mvm_tx_resp *beacon_notify_hdr;
664322fa 1258 struct ieee80211_vif *csa_vif;
003e5236 1259 struct ieee80211_vif *tx_blocked_vif;
1c87bbad 1260 u64 tsf;
571765c8 1261
bd3398e2
AO
1262 lockdep_assert_held(&mvm->mutex);
1263
1c87bbad
DS
1264 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_CAPA_EXTENDED_BEACON) {
1265 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1266
1267 beacon_notify_hdr = &beacon->beacon_notify_hdr;
1268 tsf = le64_to_cpu(beacon->tsf);
1269 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1270 } else {
1271 struct iwl_beacon_notif *beacon = (void *)pkt->data;
1272
1273 beacon_notify_hdr = &beacon->beacon_notify_hdr;
1274 tsf = le64_to_cpu(beacon->tsf);
1275 }
1276
1277 IWL_DEBUG_RX(mvm,
1278 "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n",
1279 le16_to_cpu(beacon_notify_hdr->status.status) &
1280 TX_STATUS_MSK,
1281 beacon_notify_hdr->failure_frame, tsf,
1282 mvm->ap_last_beacon_gp2,
1283 le32_to_cpu(beacon_notify_hdr->initial_rate));
bd3398e2 1284
664322fa
AO
1285 csa_vif = rcu_dereference_protected(mvm->csa_vif,
1286 lockdep_is_held(&mvm->mutex));
7f0a7c67
AO
1287 if (unlikely(csa_vif && csa_vif->csa_active))
1288 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2);
bd3398e2 1289
003e5236
AO
1290 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1291 lockdep_is_held(&mvm->mutex));
1292 if (unlikely(tx_blocked_vif)) {
1293 struct iwl_mvm_vif *mvmvif =
1294 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1295
1296 /*
1297 * The channel switch is started and we have blocked the
1298 * stations. If this is the first beacon (the timeout wasn't
1299 * set), set the unblock timeout, otherwise countdown
1300 */
1301 if (!mvm->csa_tx_block_bcn_timeout)
1302 mvm->csa_tx_block_bcn_timeout =
1303 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1304 else
1305 mvm->csa_tx_block_bcn_timeout--;
1306
1307 /* Check if the timeout is expired, and unblock tx */
1308 if (mvm->csa_tx_block_bcn_timeout == 0) {
1309 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1310 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1311 }
1312 }
1313
571765c8
IP
1314 return 0;
1315}
d64048ed
HG
1316
1317static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac,
1318 struct ieee80211_vif *vif)
1319{
12d423e8 1320 struct iwl_missed_beacons_notif *missed_beacons = _data;
d64048ed
HG
1321 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1322
12d423e8
IP
1323 if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id))
1324 return;
1325
1326 /*
1327 * TODO: the threshold should be adjusted based on latency conditions,
1328 * and/or in case of a CS flow on one of the other AP vifs.
1329 */
1330 if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) >
1331 IWL_MVM_MISSED_BEACONS_THRESHOLD)
d64048ed
HG
1332 ieee80211_beacon_loss(vif);
1333}
1334
1335int iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1336 struct iwl_rx_cmd_buffer *rxb,
1337 struct iwl_device_cmd *cmd)
1338{
1339 struct iwl_rx_packet *pkt = rxb_addr(rxb);
12d423e8
IP
1340 struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
1341
1342 IWL_DEBUG_INFO(mvm,
1343 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1344 le32_to_cpu(mb->mac_id),
1345 le32_to_cpu(mb->consec_missed_beacons),
1346 le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
1347 le32_to_cpu(mb->num_recvd_beacons),
1348 le32_to_cpu(mb->num_expected_beacons));
d64048ed
HG
1349
1350 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1351 IEEE80211_IFACE_ITER_NORMAL,
1352 iwl_mvm_beacon_loss_iterator,
12d423e8 1353 mb);
d64048ed
HG
1354 return 0;
1355}
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