1 /******************************************************************************
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.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
11 * Copyright(c) 2018 - 2019 Intel Corporation
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of version 2 of the GNU General Public License as
15 * published by the Free Software Foundation.
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
22 * The full GNU General Public License is included in this distribution
23 * in the file called COPYING.
25 * Contact Information:
26 * Intel Linux Wireless <linuxwifi@intel.com>
27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
32 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
33 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
34 * Copyright(c) 2018 - 2019 Intel Corporation
35 * All rights reserved.
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
41 * * Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * * Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in
45 * the documentation and/or other materials provided with the
47 * * Neither the name Intel Corporation nor the names of its
48 * contributors may be used to endorse or promote products derived
49 * from this software without specific prior written permission.
51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *****************************************************************************/
65 #include <linux/etherdevice.h>
66 #include <net/mac80211.h>
71 #include "time-event.h"
73 const u8 iwl_mvm_ac_to_tx_fifo[] = {
80 const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = {
81 IWL_GEN2_EDCA_TX_FIFO_VO,
82 IWL_GEN2_EDCA_TX_FIFO_VI,
83 IWL_GEN2_EDCA_TX_FIFO_BE,
84 IWL_GEN2_EDCA_TX_FIFO_BK,
85 IWL_GEN2_TRIG_TX_FIFO_VO,
86 IWL_GEN2_TRIG_TX_FIFO_VI,
87 IWL_GEN2_TRIG_TX_FIFO_BE,
88 IWL_GEN2_TRIG_TX_FIFO_BK,
91 struct iwl_mvm_mac_iface_iterator_data {
93 struct ieee80211_vif *vif;
94 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];
95 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];
96 enum iwl_tsf_id preferred_tsf;
100 static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,
101 struct ieee80211_vif *vif)
103 struct iwl_mvm_mac_iface_iterator_data *data = _data;
104 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
107 /* Skip the interface for which we are trying to assign a tsf_id */
108 if (vif == data->vif)
112 * The TSF is a hardware/firmware resource, there are 4 and
113 * the driver should assign and free them as needed. However,
114 * there are cases where 2 MACs should share the same TSF ID
115 * for the purpose of clock sync, an optimization to avoid
116 * clock drift causing overlapping TBTTs/DTIMs for a GO and
117 * client in the system.
119 * The firmware will decide according to the MAC type which
120 * will be the master and slave. Clients that need to sync
121 * with a remote station will be the master, and an AP or GO
124 * Depending on the new interface type it can be slaved to
125 * or become the master of an existing interface.
127 switch (data->vif->type) {
128 case NL80211_IFTYPE_STATION:
130 * The new interface is a client, so if the one we're iterating
131 * is an AP, and the beacon interval of the AP is a multiple or
132 * divisor of the beacon interval of the client, the same TSF
133 * should be used to avoid drift between the new client and
134 * existing AP. The existing AP will get drift updates from the
135 * new client context in this case.
137 if (vif->type != NL80211_IFTYPE_AP ||
138 data->preferred_tsf != NUM_TSF_IDS ||
139 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
142 min_bi = min(data->vif->bss_conf.beacon_int,
143 vif->bss_conf.beacon_int);
148 if ((data->vif->bss_conf.beacon_int -
149 vif->bss_conf.beacon_int) % min_bi == 0) {
150 data->preferred_tsf = mvmvif->tsf_id;
155 case NL80211_IFTYPE_AP:
157 * The new interface is AP/GO, so if its beacon interval is a
158 * multiple or a divisor of the beacon interval of an existing
159 * interface, it should get drift updates from an existing
160 * client or use the same TSF as an existing GO. There's no
161 * drift between TSFs internally but if they used different
162 * TSFs then a new client MAC could update one of them and
163 * cause drift that way.
165 if ((vif->type != NL80211_IFTYPE_AP &&
166 vif->type != NL80211_IFTYPE_STATION) ||
167 data->preferred_tsf != NUM_TSF_IDS ||
168 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
171 min_bi = min(data->vif->bss_conf.beacon_int,
172 vif->bss_conf.beacon_int);
177 if ((data->vif->bss_conf.beacon_int -
178 vif->bss_conf.beacon_int) % min_bi == 0) {
179 data->preferred_tsf = mvmvif->tsf_id;
185 * For all other interface types there's no need to
186 * take drift into account. Either they're exclusive
187 * like IBSS and monitor, or we don't care much about
188 * their TSF (like P2P Device), but we won't be able
189 * to share the TSF resource.
195 * Unless we exited above, we can't share the TSF resource
196 * that the virtual interface we're iterating over is using
197 * with the new one, so clear the available bit and if this
198 * was the preferred one, reset that as well.
200 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
202 if (data->preferred_tsf == mvmvif->tsf_id)
203 data->preferred_tsf = NUM_TSF_IDS;
206 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
207 struct ieee80211_vif *vif)
209 struct iwl_mvm_mac_iface_iterator_data *data = _data;
210 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
212 /* Iterator may already find the interface being added -- skip it */
213 if (vif == data->vif) {
214 data->found_vif = true;
218 /* Mark MAC IDs as used by clearing the available bit, and
219 * (below) mark TSFs as used if their existing use is not
220 * compatible with the new interface type.
221 * No locking or atomic bit operations are needed since the
222 * data is on the stack of the caller function.
224 __clear_bit(mvmvif->id, data->available_mac_ids);
226 /* find a suitable tsf_id */
227 iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
230 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
231 struct ieee80211_vif *vif)
233 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
234 struct iwl_mvm_mac_iface_iterator_data data = {
237 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
238 /* no preference yet */
239 .preferred_tsf = NUM_TSF_IDS,
242 ieee80211_iterate_active_interfaces_atomic(
243 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
244 iwl_mvm_mac_tsf_id_iter, &data);
246 if (data.preferred_tsf != NUM_TSF_IDS)
247 mvmvif->tsf_id = data.preferred_tsf;
248 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))
249 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
253 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
255 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
256 struct iwl_mvm_mac_iface_iterator_data data = {
259 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
260 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
261 /* no preference yet */
262 .preferred_tsf = NUM_TSF_IDS,
267 lockdep_assert_held(&mvm->mutex);
270 * Allocate a MAC ID and a TSF for this MAC, along with the queues
271 * and other resources.
275 * Before the iterator, we start with all MAC IDs and TSFs available.
277 * During iteration, all MAC IDs are cleared that are in use by other
278 * virtual interfaces, and all TSF IDs are cleared that can't be used
279 * by this new virtual interface because they're used by an interface
280 * that can't share it with the new one.
281 * At the same time, we check if there's a preferred TSF in the case
282 * that we should share it with another interface.
285 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
287 case NL80211_IFTYPE_ADHOC:
289 case NL80211_IFTYPE_STATION:
294 __clear_bit(0, data.available_mac_ids);
297 ieee80211_iterate_active_interfaces_atomic(
298 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
299 iwl_mvm_mac_iface_iterator, &data);
302 * In the case we're getting here during resume, it's similar to
303 * firmware restart, and with RESUME_ALL the iterator will find
304 * the vif being added already.
305 * We don't want to reassign any IDs in either case since doing
306 * so would probably assign different IDs (as interfaces aren't
307 * necessarily added in the same order), but the old IDs were
308 * preserved anyway, so skip ID assignment for both resume and
314 /* Therefore, in recovery, we can't get here */
315 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
318 mvmvif->id = find_first_bit(data.available_mac_ids,
319 NUM_MAC_INDEX_DRIVER);
320 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
321 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
326 if (data.preferred_tsf != NUM_TSF_IDS)
327 mvmvif->tsf_id = data.preferred_tsf;
329 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
331 if (mvmvif->tsf_id == NUM_TSF_IDS) {
332 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
339 INIT_LIST_HEAD(&mvmvif->time_event_data.list);
340 mvmvif->time_event_data.id = TE_MAX;
342 /* No need to allocate data queues to P2P Device MAC and NAN.*/
343 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
346 /* Allocate the CAB queue for softAP and GO interfaces */
347 if (vif->type == NL80211_IFTYPE_AP ||
348 vif->type == NL80211_IFTYPE_ADHOC) {
350 * For TVQM this will be overwritten later with the FW assigned
351 * queue value (when queue is enabled).
353 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
356 mvmvif->bcast_sta.sta_id = IWL_MVM_INVALID_STA;
357 mvmvif->mcast_sta.sta_id = IWL_MVM_INVALID_STA;
358 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
360 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
361 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
366 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
370 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
371 struct ieee80211_vif *vif,
372 enum nl80211_band band,
373 u8 *cck_rates, u8 *ofdm_rates)
375 struct ieee80211_supported_band *sband;
376 unsigned long basic = vif->bss_conf.basic_rates;
377 int lowest_present_ofdm = 100;
378 int lowest_present_cck = 100;
383 sband = mvm->hw->wiphy->bands[band];
385 for_each_set_bit(i, &basic, BITS_PER_LONG) {
386 int hw = sband->bitrates[i].hw_value;
387 if (hw >= IWL_FIRST_OFDM_RATE) {
388 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
389 if (lowest_present_ofdm > hw)
390 lowest_present_ofdm = hw;
392 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
395 if (lowest_present_cck > hw)
396 lowest_present_cck = hw;
401 * Now we've got the basic rates as bitmaps in the ofdm and cck
402 * variables. This isn't sufficient though, as there might not
403 * be all the right rates in the bitmap. E.g. if the only basic
404 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
405 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
407 * [...] a STA responding to a received frame shall transmit
408 * its Control Response frame [...] at the highest rate in the
409 * BSSBasicRateSet parameter that is less than or equal to the
410 * rate of the immediately previous frame in the frame exchange
411 * sequence ([...]) and that is of the same modulation class
412 * ([...]) as the received frame. If no rate contained in the
413 * BSSBasicRateSet parameter meets these conditions, then the
414 * control frame sent in response to a received frame shall be
415 * transmitted at the highest mandatory rate of the PHY that is
416 * less than or equal to the rate of the received frame, and
417 * that is of the same modulation class as the received frame.
419 * As a consequence, we need to add all mandatory rates that are
420 * lower than all of the basic rates to these bitmaps.
423 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
424 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
425 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
426 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
427 /* 6M already there or needed so always add */
428 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
431 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
433 * - if no CCK rates are basic, it must be ERP since there must
434 * be some basic rates at all, so they're OFDM => ERP PHY
435 * (or we're in 5 GHz, and the cck bitmap will never be used)
436 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
437 * - if 5.5M is basic, 1M and 2M are mandatory
438 * - if 2M is basic, 1M is mandatory
439 * - if 1M is basic, that's the only valid ACK rate.
440 * As a consequence, it's not as complicated as it sounds, just add
441 * any lower rates to the ACK rate bitmap.
443 if (IWL_RATE_11M_INDEX < lowest_present_cck)
444 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
445 if (IWL_RATE_5M_INDEX < lowest_present_cck)
446 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
447 if (IWL_RATE_2M_INDEX < lowest_present_cck)
448 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
449 /* 1M already there or needed so always add */
450 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
456 static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm,
457 struct ieee80211_vif *vif,
458 struct iwl_mac_ctx_cmd *cmd)
460 /* for both sta and ap, ht_operation_mode hold the protection_mode */
461 u8 protection_mode = vif->bss_conf.ht_operation_mode &
462 IEEE80211_HT_OP_MODE_PROTECTION;
463 /* The fw does not distinguish between ht and fat */
464 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
466 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
468 * See section 9.23.3.1 of IEEE 80211-2012.
469 * Nongreenfield HT STAs Present is not supported.
471 switch (protection_mode) {
472 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
474 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
475 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
476 cmd->protection_flags |= cpu_to_le32(ht_flag);
478 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
479 /* Protect when channel wider than 20MHz */
480 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20)
481 cmd->protection_flags |= cpu_to_le32(ht_flag);
484 IWL_ERR(mvm, "Illegal protection mode %d\n",
490 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
491 struct ieee80211_vif *vif,
492 struct iwl_mac_ctx_cmd *cmd,
493 const u8 *bssid_override,
496 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
497 struct ieee80211_chanctx_conf *chanctx;
498 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode &
499 IEEE80211_HT_OP_MODE_PROTECTION);
500 u8 cck_ack_rates, ofdm_ack_rates;
501 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
504 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
506 cmd->action = cpu_to_le32(action);
509 case NL80211_IFTYPE_STATION:
511 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
513 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
515 case NL80211_IFTYPE_AP:
516 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
518 case NL80211_IFTYPE_MONITOR:
519 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
521 case NL80211_IFTYPE_P2P_DEVICE:
522 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
524 case NL80211_IFTYPE_ADHOC:
525 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
531 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
533 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
536 memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
538 eth_broadcast_addr(cmd->bssid_addr);
541 chanctx = rcu_dereference(vif->chanctx_conf);
542 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
544 &cck_ack_rates, &ofdm_ack_rates);
547 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
548 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
550 cmd->cck_short_preamble =
551 cpu_to_le32(vif->bss_conf.use_short_preamble ?
552 MAC_FLG_SHORT_PREAMBLE : 0);
554 cpu_to_le32(vif->bss_conf.use_short_slot ?
555 MAC_FLG_SHORT_SLOT : 0);
557 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
559 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
560 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);
561 u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
563 cmd->ac[ucode_ac].cw_min =
564 cpu_to_le16(mvmvif->queue_params[i].cw_min);
565 cmd->ac[ucode_ac].cw_max =
566 cpu_to_le16(mvmvif->queue_params[i].cw_max);
567 cmd->ac[ucode_ac].edca_txop =
568 cpu_to_le16(mvmvif->queue_params[i].txop * 32);
569 cmd->ac[ucode_ac].aifsn = mvmvif->queue_params[i].aifs;
570 cmd->ac[ucode_ac].fifos_mask = BIT(txf);
573 if (vif->bss_conf.qos)
574 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
576 if (vif->bss_conf.use_cts_prot)
577 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
579 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
580 vif->bss_conf.use_cts_prot,
581 vif->bss_conf.ht_operation_mode);
582 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
583 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
585 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd);
588 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
589 struct iwl_mac_ctx_cmd *cmd)
591 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
594 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
595 le32_to_cpu(cmd->action), ret);
599 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
600 struct ieee80211_vif *vif,
601 u32 action, bool force_assoc_off,
602 const u8 *bssid_override)
604 struct iwl_mac_ctx_cmd cmd = {};
605 struct iwl_mac_data_sta *ctxt_sta;
607 WARN_ON(vif->type != NL80211_IFTYPE_STATION);
609 /* Fill the common data for all mac context types */
610 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
613 struct ieee80211_p2p_noa_attr *noa =
614 &vif->bss_conf.p2p_noa_attr;
616 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow &
617 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
618 ctxt_sta = &cmd.p2p_sta.sta;
623 /* We need the dtim_period to set the MAC as associated */
624 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period &&
629 * The DTIM count counts down, so when it is N that means N
630 * more beacon intervals happen until the DTIM TBTT. Therefore
631 * add this to the current time. If that ends up being in the
632 * future, the firmware will handle it.
634 * Also note that the system_timestamp (which we get here as
635 * "sync_device_ts") and TSF timestamp aren't at exactly the
636 * same offset in the frame -- the TSF is at the first symbol
637 * of the TSF, the system timestamp is at signal acquisition
638 * time. This means there's an offset between them of at most
639 * a few hundred microseconds (24 * 8 bits + PLCP time gives
640 * 384us in the longest case), this is currently not relevant
641 * as the firmware wakes up around 2ms before the TBTT.
643 dtim_offs = vif->bss_conf.sync_dtim_count *
644 vif->bss_conf.beacon_int;
645 /* convert TU to usecs */
649 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
650 ctxt_sta->dtim_time =
651 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
652 ctxt_sta->assoc_beacon_arrive_time =
653 cpu_to_le32(vif->bss_conf.sync_device_ts);
655 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
656 le64_to_cpu(ctxt_sta->dtim_tsf),
657 le32_to_cpu(ctxt_sta->dtim_time),
660 ctxt_sta->is_assoc = cpu_to_le32(1);
662 ctxt_sta->is_assoc = cpu_to_le32(0);
664 /* Allow beacons to pass through as long as we are not
665 * associated, or we do not have dtim period information.
667 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
670 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
671 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
672 vif->bss_conf.dtim_period);
674 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
675 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
677 if (vif->probe_req_reg && vif->bss_conf.assoc && vif->p2p)
678 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
680 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) {
681 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX);
682 if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT)
683 ctxt_sta->data_policy |= cpu_to_le32(TWT_SUPPORTED);
687 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
690 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
691 struct ieee80211_vif *vif,
694 struct iwl_mac_ctx_cmd cmd = {};
695 u32 tfd_queue_msk = BIT(mvm->snif_queue);
698 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
700 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
702 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
703 MAC_FILTER_IN_CONTROL_AND_MGMT |
704 MAC_FILTER_IN_BEACON |
705 MAC_FILTER_IN_PROBE_REQUEST |
706 MAC_FILTER_IN_CRC32);
707 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
709 /* Allocate sniffer station */
710 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk,
711 vif->type, IWL_STA_GENERAL_PURPOSE);
715 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
718 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
719 struct ieee80211_vif *vif,
722 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
723 struct iwl_mac_ctx_cmd cmd = {};
725 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
727 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
729 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
730 MAC_FILTER_IN_PROBE_REQUEST);
732 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
733 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
735 /* TODO: Assumes that the beacon id == mac context id */
736 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
738 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
741 struct iwl_mvm_go_iterator_data {
745 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
747 struct iwl_mvm_go_iterator_data *data = _data;
748 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
750 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
751 mvmvif->ap_ibss_active)
752 data->go_active = true;
755 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
756 struct ieee80211_vif *vif,
759 struct iwl_mac_ctx_cmd cmd = {};
760 struct iwl_mvm_go_iterator_data data = {};
762 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
764 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
766 /* Override the filter flags to accept only probe requests */
767 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
770 * This flag should be set to true when the P2P Device is
771 * discoverable and there is at least another active P2P GO. Settings
772 * this flag will allow the P2P Device to be discoverable on other
773 * channels in addition to its listen channel.
774 * Note that this flag should not be set in other cases as it opens the
775 * Rx filters on all MAC and increases the number of interrupts.
777 ieee80211_iterate_active_interfaces_atomic(
778 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
779 iwl_mvm_go_iterator, &data);
781 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
782 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
785 void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
786 __le32 *tim_index, __le32 *tim_size,
787 u8 *beacon, u32 frame_size)
790 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
792 /* The index is relative to frame start but we start looking at the
793 * variable-length part of the beacon. */
794 tim_idx = mgmt->u.beacon.variable - beacon;
796 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
797 while ((tim_idx < (frame_size - 2)) &&
798 (beacon[tim_idx] != WLAN_EID_TIM))
799 tim_idx += beacon[tim_idx+1] + 2;
801 /* If TIM field was found, set variables */
802 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
803 *tim_index = cpu_to_le32(tim_idx);
804 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]);
806 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
810 static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)
812 struct ieee80211_mgmt *mgmt = (void *)beacon;
815 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))
818 frame_size -= mgmt->u.beacon.variable - beacon;
820 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
827 u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info *info,
828 struct ieee80211_vif *vif)
832 if (info->band == NL80211_BAND_5GHZ || vif->p2p)
833 rate = IWL_FIRST_OFDM_RATE;
835 rate = IWL_FIRST_CCK_RATE;
840 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,
841 struct ieee80211_vif *vif,
842 struct sk_buff *beacon,
843 struct iwl_tx_cmd *tx)
845 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
846 struct ieee80211_tx_info *info;
850 info = IEEE80211_SKB_CB(beacon);
852 /* Set up TX command fields */
853 tx->len = cpu_to_le16((u16)beacon->len);
854 tx->sta_id = mvmvif->bcast_sta.sta_id;
855 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
856 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
858 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
859 TX_CMD_FLG_BT_PRIO_POS;
860 tx->tx_flags = cpu_to_le32(tx_flags);
862 if (!fw_has_capa(&mvm->fw->ucode_capa,
863 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION))
864 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
867 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
870 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
872 tx->rate_n_flags |= cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
873 if (rate == IWL_FIRST_CCK_RATE)
874 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
878 int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,
879 struct sk_buff *beacon,
882 struct iwl_host_cmd cmd = {
883 .id = BEACON_TEMPLATE_CMD,
889 cmd.dataflags[0] = 0;
890 cmd.len[1] = beacon->len;
891 cmd.data[1] = beacon->data;
892 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
894 return iwl_mvm_send_cmd(mvm, &cmd);
897 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm,
898 struct ieee80211_vif *vif,
899 struct sk_buff *beacon)
901 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
902 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};
904 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
906 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
908 if (vif->type == NL80211_IFTYPE_AP)
909 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
910 &beacon_cmd.tim_size,
911 beacon->data, beacon->len);
913 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
917 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm,
918 struct ieee80211_vif *vif,
919 struct sk_buff *beacon)
921 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
922 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};
924 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
926 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
928 if (vif->type == NL80211_IFTYPE_AP)
929 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
930 &beacon_cmd.tim_size,
931 beacon->data, beacon->len);
933 beacon_cmd.csa_offset =
934 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
935 WLAN_EID_CHANNEL_SWITCH,
937 beacon_cmd.ecsa_offset =
938 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
939 WLAN_EID_EXT_CHANSWITCH_ANN,
942 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
946 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,
947 struct ieee80211_vif *vif,
948 struct sk_buff *beacon)
950 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
951 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);
952 struct iwl_mac_beacon_cmd beacon_cmd = {};
953 u8 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
956 flags = iwl_mvm_mac80211_idx_to_hwrate(rate);
958 if (rate == IWL_FIRST_CCK_RATE)
959 flags |= IWL_MAC_BEACON_CCK;
961 beacon_cmd.flags = cpu_to_le16(flags);
962 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);
963 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
965 if (vif->type == NL80211_IFTYPE_AP)
966 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
967 &beacon_cmd.tim_size,
968 beacon->data, beacon->len);
970 beacon_cmd.csa_offset =
971 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
972 WLAN_EID_CHANNEL_SWITCH,
974 beacon_cmd.ecsa_offset =
975 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
976 WLAN_EID_EXT_CHANSWITCH_ANN,
979 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
983 int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
984 struct ieee80211_vif *vif,
985 struct sk_buff *beacon)
987 if (WARN_ON(!beacon))
990 if (IWL_MVM_NON_TRANSMITTING_AP)
993 if (!fw_has_capa(&mvm->fw->ucode_capa,
994 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))
995 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);
997 if (fw_has_api(&mvm->fw->ucode_capa,
998 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
999 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon);
1001 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
1004 /* The beacon template for the AP/GO/IBSS has changed and needs update */
1005 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
1006 struct ieee80211_vif *vif)
1008 struct sk_buff *beacon;
1011 WARN_ON(vif->type != NL80211_IFTYPE_AP &&
1012 vif->type != NL80211_IFTYPE_ADHOC);
1014 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL);
1018 #ifdef CONFIG_IWLWIFI_DEBUGFS
1019 if (mvm->beacon_inject_active)
1023 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
1024 dev_kfree_skb(beacon);
1028 struct iwl_mvm_mac_ap_iterator_data {
1029 struct iwl_mvm *mvm;
1030 struct ieee80211_vif *vif;
1031 u32 beacon_device_ts;
1035 /* Find the beacon_device_ts and beacon_int for a managed interface */
1036 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
1037 struct ieee80211_vif *vif)
1039 struct iwl_mvm_mac_ap_iterator_data *data = _data;
1041 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
1044 /* Station client has higher priority over P2P client*/
1045 if (vif->p2p && data->beacon_device_ts)
1048 data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1049 data->beacon_int = vif->bss_conf.beacon_int;
1053 * Fill the specific data for mac context of type AP of P2P GO
1055 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1056 struct ieee80211_vif *vif,
1057 struct iwl_mac_ctx_cmd *cmd,
1058 struct iwl_mac_data_ap *ctxt_ap,
1061 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1062 struct iwl_mvm_mac_ap_iterator_data data = {
1065 .beacon_device_ts = 0
1068 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
1069 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
1072 * in AP mode, pass probe requests and beacons from other APs
1073 * (needed for ht protection); when there're no any associated
1074 * station don't ask FW to pass beacons to prevent unnecessary
1077 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
1078 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
1079 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
1080 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
1082 IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
1085 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1086 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1087 vif->bss_conf.dtim_period);
1089 if (!fw_has_api(&mvm->fw->ucode_capa,
1090 IWL_UCODE_TLV_API_STA_TYPE))
1091 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->cab_queue);
1094 * Only set the beacon time when the MAC is being added, when we
1095 * just modify the MAC then we should keep the time -- the firmware
1096 * can otherwise have a "jumping" TBTT.
1100 * If there is a station/P2P client interface which is
1101 * associated, set the AP's TBTT far enough from the station's
1102 * TBTT. Otherwise, set it to the current system time
1104 ieee80211_iterate_active_interfaces_atomic(
1105 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1106 iwl_mvm_mac_ap_iterator, &data);
1108 if (data.beacon_device_ts) {
1109 u32 rand = (prandom_u32() % (64 - 36)) + 36;
1110 mvmvif->ap_beacon_time = data.beacon_device_ts +
1111 ieee80211_tu_to_usec(data.beacon_int * rand /
1114 mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm);
1118 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1119 ctxt_ap->beacon_tsf = 0; /* unused */
1121 /* TODO: Assume that the beacon id == mac context id */
1122 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1125 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1126 struct ieee80211_vif *vif,
1129 struct iwl_mac_ctx_cmd cmd = {};
1131 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1133 /* Fill the common data for all mac context types */
1134 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1136 /* Fill the data specific for ap mode */
1137 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap,
1138 action == FW_CTXT_ACTION_ADD);
1140 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1143 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1144 struct ieee80211_vif *vif,
1147 struct iwl_mac_ctx_cmd cmd = {};
1148 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1150 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1152 /* Fill the common data for all mac context types */
1153 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1155 /* Fill the data specific for GO mode */
1156 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap,
1157 action == FW_CTXT_ACTION_ADD);
1159 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1160 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1161 cmd.go.opp_ps_enabled =
1162 cpu_to_le32(!!(noa->oppps_ctwindow &
1163 IEEE80211_P2P_OPPPS_ENABLE_BIT));
1165 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1168 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1169 u32 action, bool force_assoc_off,
1170 const u8 *bssid_override)
1172 switch (vif->type) {
1173 case NL80211_IFTYPE_STATION:
1174 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1178 case NL80211_IFTYPE_AP:
1180 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1182 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1184 case NL80211_IFTYPE_MONITOR:
1185 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1186 case NL80211_IFTYPE_P2P_DEVICE:
1187 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1188 case NL80211_IFTYPE_ADHOC:
1189 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1197 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1199 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1202 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1203 vif->addr, ieee80211_vif_type_p2p(vif)))
1206 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1211 /* will only do anything at resume from D3 time */
1212 iwl_mvm_set_last_nonqos_seq(mvm, vif);
1214 mvmvif->uploaded = true;
1218 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1219 bool force_assoc_off, const u8 *bssid_override)
1221 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1223 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1224 vif->addr, ieee80211_vif_type_p2p(vif)))
1227 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1228 force_assoc_off, bssid_override);
1231 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1233 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1234 struct iwl_mac_ctx_cmd cmd;
1237 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1238 vif->addr, ieee80211_vif_type_p2p(vif)))
1241 memset(&cmd, 0, sizeof(cmd));
1243 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1245 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1247 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
1250 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1254 mvmvif->uploaded = false;
1256 if (vif->type == NL80211_IFTYPE_MONITOR) {
1257 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
1258 iwl_mvm_dealloc_snif_sta(mvm);
1264 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1265 struct ieee80211_vif *csa_vif, u32 gp2,
1268 struct iwl_mvm_vif *mvmvif =
1269 iwl_mvm_vif_from_mac80211(csa_vif);
1271 /* Don't start to countdown from a failed beacon */
1272 if (!tx_success && !mvmvif->csa_countdown)
1275 mvmvif->csa_countdown = true;
1277 if (!ieee80211_csa_is_complete(csa_vif)) {
1278 int c = ieee80211_csa_update_counter(csa_vif);
1280 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif);
1282 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
1284 u32 rel_time = (c + 1) *
1285 csa_vif->bss_conf.beacon_int -
1286 IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1287 u32 apply_time = gp2 + rel_time * 1024;
1289 iwl_mvm_schedule_csa_period(mvm, csa_vif,
1290 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1291 IWL_MVM_CHANNEL_SWITCH_MARGIN,
1294 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1295 /* we don't have CSA NoA scheduled yet, switch now */
1296 ieee80211_csa_finish(csa_vif);
1297 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1301 void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1302 struct iwl_rx_cmd_buffer *rxb)
1304 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1305 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1306 struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data;
1307 struct ieee80211_vif *csa_vif;
1308 struct ieee80211_vif *tx_blocked_vif;
1309 struct agg_tx_status *agg_status;
1312 lockdep_assert_held(&mvm->mutex);
1314 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1316 if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) {
1317 struct iwl_mvm_tx_resp *beacon_notify_hdr =
1318 &beacon_v5->beacon_notify_hdr;
1320 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0;
1321 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
1322 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
1324 "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n",
1325 status, beacon_notify_hdr->failure_frame,
1326 le64_to_cpu(beacon->tsf),
1327 mvm->ap_last_beacon_gp2,
1328 le32_to_cpu(beacon_notify_hdr->initial_rate));
1330 mvm->ibss_manager = beacon->ibss_mgr_status != 0;
1331 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK;
1333 "beacon status %#x tsf:0x%016llX gp2:0x%X\n",
1334 status, le64_to_cpu(beacon->tsf),
1335 mvm->ap_last_beacon_gp2);
1338 csa_vif = rcu_dereference_protected(mvm->csa_vif,
1339 lockdep_is_held(&mvm->mutex));
1340 if (unlikely(csa_vif && csa_vif->csa_active))
1341 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
1342 (status == TX_STATUS_SUCCESS));
1344 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1345 lockdep_is_held(&mvm->mutex));
1346 if (unlikely(tx_blocked_vif)) {
1347 struct iwl_mvm_vif *mvmvif =
1348 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1351 * The channel switch is started and we have blocked the
1352 * stations. If this is the first beacon (the timeout wasn't
1353 * set), set the unblock timeout, otherwise countdown
1355 if (!mvm->csa_tx_block_bcn_timeout)
1356 mvm->csa_tx_block_bcn_timeout =
1357 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1359 mvm->csa_tx_block_bcn_timeout--;
1361 /* Check if the timeout is expired, and unblock tx */
1362 if (mvm->csa_tx_block_bcn_timeout == 0) {
1363 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1364 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1369 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1370 struct iwl_rx_cmd_buffer *rxb)
1372 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1373 struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
1374 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
1375 struct iwl_fw_dbg_trigger_tlv *trigger;
1376 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
1377 u32 rx_missed_bcon, rx_missed_bcon_since_rx;
1378 struct ieee80211_vif *vif;
1379 u32 id = le32_to_cpu(mb->mac_id);
1382 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1383 le32_to_cpu(mb->mac_id),
1384 le32_to_cpu(mb->consec_missed_beacons),
1385 le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
1386 le32_to_cpu(mb->num_recvd_beacons),
1387 le32_to_cpu(mb->num_expected_beacons));
1391 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1395 rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons);
1396 rx_missed_bcon_since_rx =
1397 le32_to_cpu(mb->consec_missed_beacons_since_last_rx);
1399 * TODO: the threshold should be adjusted based on latency conditions,
1400 * and/or in case of a CS flow on one of the other AP vifs.
1402 if (rx_missed_bcon > IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG)
1403 iwl_mvm_connection_loss(mvm, vif, "missed beacons");
1404 else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD)
1405 ieee80211_beacon_loss(vif);
1407 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
1408 FW_DBG_TRIGGER_MISSED_BEACONS);
1412 bcon_trig = (void *)trigger->data;
1413 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
1414 stop_trig_missed_bcon_since_rx =
1415 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
1417 /* TODO: implement start trigger */
1419 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
1420 rx_missed_bcon >= stop_trig_missed_bcon)
1421 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
1423 iwl_fw_dbg_apply_point(&mvm->fwrt, IWL_FW_INI_APPLY_MISSED_BEACONS);
1429 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
1430 struct iwl_rx_cmd_buffer *rxb)
1432 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1433 struct iwl_stored_beacon_notif *sb = (void *)pkt->data;
1434 struct ieee80211_rx_status rx_status;
1435 struct sk_buff *skb;
1436 u32 size = le32_to_cpu(sb->byte_count);
1441 skb = alloc_skb(size, GFP_ATOMIC);
1443 IWL_ERR(mvm, "alloc_skb failed\n");
1447 /* update rx_status according to the notification's metadata */
1448 memset(&rx_status, 0, sizeof(rx_status));
1449 rx_status.mactime = le64_to_cpu(sb->tsf);
1450 /* TSF as indicated by the firmware is at INA time */
1451 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
1452 rx_status.device_timestamp = le32_to_cpu(sb->system_time);
1454 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
1455 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
1457 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),
1461 skb_put_data(skb, sb->data, size);
1462 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1464 /* pass it as regular rx to mac80211 */
1465 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
1468 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm,
1469 struct iwl_rx_cmd_buffer *rxb)
1471 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1472 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data;
1473 struct iwl_probe_resp_data *old_data, *new_data;
1474 int len = iwl_rx_packet_payload_len(pkt);
1475 u32 id = le32_to_cpu(notif->mac_id);
1476 struct ieee80211_vif *vif;
1477 struct iwl_mvm_vif *mvmvif;
1479 if (WARN_ON_ONCE(len < sizeof(*notif)))
1482 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n",
1483 notif->noa_active, notif->csa_counter);
1485 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
1489 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1491 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL);
1495 memcpy(&new_data->notif, notif, sizeof(new_data->notif));
1497 /* noa_attr contains 1 reserved byte, need to substruct it */
1498 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) +
1499 sizeof(new_data->notif.noa_attr) - 1;
1502 * If it's a one time NoA, only one descriptor is needed,
1503 * adjust the length according to len_low.
1505 if (new_data->notif.noa_attr.len_low ==
1506 sizeof(struct ieee80211_p2p_noa_desc) + 2)
1507 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc);
1509 old_data = rcu_dereference_protected(mvmvif->probe_resp_data,
1510 lockdep_is_held(&mvmvif->mvm->mutex));
1511 rcu_assign_pointer(mvmvif->probe_resp_data, new_data);
1514 kfree_rcu(old_data, rcu_head);
1516 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA &&
1517 notif->csa_counter >= 1)
1518 ieee80211_csa_set_counter(vif, notif->csa_counter);
1521 void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm *mvm,
1522 struct iwl_rx_cmd_buffer *rxb)
1524 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1525 struct iwl_channel_switch_noa_notif *notif = (void *)pkt->data;
1526 struct ieee80211_vif *csa_vif, *vif;
1527 struct iwl_mvm_vif *mvmvif;
1528 int len = iwl_rx_packet_payload_len(pkt);
1529 u32 id_n_color, csa_id, mac_id;
1531 if (WARN_ON_ONCE(len < sizeof(*notif)))
1534 id_n_color = le32_to_cpu(notif->id_and_color);
1535 mac_id = id_n_color & FW_CTXT_ID_MSK;
1537 if (WARN_ON_ONCE(mac_id >= NUM_MAC_INDEX_DRIVER))
1541 vif = rcu_dereference(mvm->vif_id_to_mac[mac_id]);
1542 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1544 switch (vif->type) {
1545 case NL80211_IFTYPE_AP:
1546 csa_vif = rcu_dereference(mvm->csa_vif);
1547 if (WARN_ON(!csa_vif || !csa_vif->csa_active ||
1551 csa_id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
1552 if (WARN(csa_id != id_n_color,
1553 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
1554 csa_id, id_n_color))
1557 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");
1559 schedule_delayed_work(&mvm->cs_tx_unblock_dwork,
1560 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
1561 csa_vif->bss_conf.beacon_int));
1563 ieee80211_csa_finish(csa_vif);
1567 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1569 case NL80211_IFTYPE_STATION:
1570 iwl_mvm_csa_client_absent(mvm, vif);
1571 cancel_delayed_work(&mvmvif->csa_work);
1572 ieee80211_chswitch_done(vif, true);
1575 /* should never happen */