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iwlwifi: mvm: update firmware of VHT MU-MIMO groups status on restart
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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  *
8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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
26  * in the file called COPYING.
27  *
28  * Contact Information:
29  *  Intel Linux Wireless <linuxwifi@intel.com>
30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31  *
32  * BSD LICENSE
33  *
34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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 #include <linux/kernel.h>
66 #include <linux/slab.h>
67 #include <linux/skbuff.h>
68 #include <linux/netdevice.h>
69 #include <linux/etherdevice.h>
70 #include <linux/ip.h>
71 #include <linux/if_arp.h>
72 #include <linux/devcoredump.h>
73 #include <linux/time.h>
74 #include <net/mac80211.h>
75 #include <net/ieee80211_radiotap.h>
76 #include <net/tcp.h>
77
78 #include "iwl-op-mode.h"
79 #include "iwl-io.h"
80 #include "mvm.h"
81 #include "sta.h"
82 #include "time-event.h"
83 #include "iwl-eeprom-parse.h"
84 #include "iwl-phy-db.h"
85 #include "testmode.h"
86 #include "iwl-fw-error-dump.h"
87 #include "iwl-prph.h"
88 #include "iwl-csr.h"
89 #include "iwl-nvm-parse.h"
90 #include "fw-dbg.h"
91
92 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
93         {
94                 .max = 1,
95                 .types = BIT(NL80211_IFTYPE_STATION),
96         },
97         {
98                 .max = 1,
99                 .types = BIT(NL80211_IFTYPE_AP) |
100                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
101                         BIT(NL80211_IFTYPE_P2P_GO),
102         },
103         {
104                 .max = 1,
105                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
106         },
107 };
108
109 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
110         {
111                 .num_different_channels = 2,
112                 .max_interfaces = 3,
113                 .limits = iwl_mvm_limits,
114                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
115         },
116 };
117
118 #ifdef CONFIG_PM_SLEEP
119 static const struct nl80211_wowlan_tcp_data_token_feature
120 iwl_mvm_wowlan_tcp_token_feature = {
121         .min_len = 0,
122         .max_len = 255,
123         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
124 };
125
126 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
127         .tok = &iwl_mvm_wowlan_tcp_token_feature,
128         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
129                             sizeof(struct ethhdr) -
130                             sizeof(struct iphdr) -
131                             sizeof(struct tcphdr),
132         .data_interval_max = 65535, /* __le16 in API */
133         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
134                             sizeof(struct ethhdr) -
135                             sizeof(struct iphdr) -
136                             sizeof(struct tcphdr),
137         .seq = true,
138 };
139 #endif
140
141 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
142 /*
143  * Use the reserved field to indicate magic values.
144  * these values will only be used internally by the driver,
145  * and won't make it to the fw (reserved will be 0).
146  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
147  *      be the vif's ip address. in case there is not a single
148  *      ip address (0, or more than 1), this attribute will
149  *      be skipped.
150  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
151  *      the LSB bytes of the vif's mac address
152  */
153 enum {
154         BC_FILTER_MAGIC_NONE = 0,
155         BC_FILTER_MAGIC_IP,
156         BC_FILTER_MAGIC_MAC,
157 };
158
159 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
160         {
161                 /* arp */
162                 .discard = 0,
163                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
164                 .attrs = {
165                         {
166                                 /* frame type - arp, hw type - ethernet */
167                                 .offset_type =
168                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
169                                 .offset = sizeof(rfc1042_header),
170                                 .val = cpu_to_be32(0x08060001),
171                                 .mask = cpu_to_be32(0xffffffff),
172                         },
173                         {
174                                 /* arp dest ip */
175                                 .offset_type =
176                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
177                                 .offset = sizeof(rfc1042_header) + 2 +
178                                           sizeof(struct arphdr) +
179                                           ETH_ALEN + sizeof(__be32) +
180                                           ETH_ALEN,
181                                 .mask = cpu_to_be32(0xffffffff),
182                                 /* mark it as special field */
183                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
184                         },
185                 },
186         },
187         {
188                 /* dhcp offer bcast */
189                 .discard = 0,
190                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
191                 .attrs = {
192                         {
193                                 /* udp dest port - 68 (bootp client)*/
194                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
195                                 .offset = offsetof(struct udphdr, dest),
196                                 .val = cpu_to_be32(0x00440000),
197                                 .mask = cpu_to_be32(0xffff0000),
198                         },
199                         {
200                                 /* dhcp - lsb bytes of client hw address */
201                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
202                                 .offset = 38,
203                                 .mask = cpu_to_be32(0xffffffff),
204                                 /* mark it as special field */
205                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
206                         },
207                 },
208         },
209         /* last filter must be empty */
210         {},
211 };
212 #endif
213
214 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
215 {
216         if (!iwl_mvm_is_d0i3_supported(mvm))
217                 return;
218
219         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
220         spin_lock_bh(&mvm->refs_lock);
221         mvm->refs[ref_type]++;
222         spin_unlock_bh(&mvm->refs_lock);
223         iwl_trans_ref(mvm->trans);
224 }
225
226 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
227 {
228         if (!iwl_mvm_is_d0i3_supported(mvm))
229                 return;
230
231         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
232         spin_lock_bh(&mvm->refs_lock);
233         WARN_ON(!mvm->refs[ref_type]--);
234         spin_unlock_bh(&mvm->refs_lock);
235         iwl_trans_unref(mvm->trans);
236 }
237
238 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
239                                      enum iwl_mvm_ref_type except_ref)
240 {
241         int i, j;
242
243         if (!iwl_mvm_is_d0i3_supported(mvm))
244                 return;
245
246         spin_lock_bh(&mvm->refs_lock);
247         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
248                 if (except_ref == i || !mvm->refs[i])
249                         continue;
250
251                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
252                               i, mvm->refs[i]);
253                 for (j = 0; j < mvm->refs[i]; j++)
254                         iwl_trans_unref(mvm->trans);
255                 mvm->refs[i] = 0;
256         }
257         spin_unlock_bh(&mvm->refs_lock);
258 }
259
260 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
261 {
262         int i;
263         bool taken = false;
264
265         if (!iwl_mvm_is_d0i3_supported(mvm))
266                 return true;
267
268         spin_lock_bh(&mvm->refs_lock);
269         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
270                 if (mvm->refs[i]) {
271                         taken = true;
272                         break;
273                 }
274         }
275         spin_unlock_bh(&mvm->refs_lock);
276
277         return taken;
278 }
279
280 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
281 {
282         iwl_mvm_ref(mvm, ref_type);
283
284         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
285                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
286                                 HZ)) {
287                 WARN_ON_ONCE(1);
288                 iwl_mvm_unref(mvm, ref_type);
289                 return -EIO;
290         }
291
292         return 0;
293 }
294
295 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
296 {
297         int i;
298
299         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
300         for (i = 0; i < NUM_PHY_CTX; i++) {
301                 mvm->phy_ctxts[i].id = i;
302                 mvm->phy_ctxts[i].ref = 0;
303         }
304 }
305
306 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
307                                                   const char *alpha2,
308                                                   enum iwl_mcc_source src_id,
309                                                   bool *changed)
310 {
311         struct ieee80211_regdomain *regd = NULL;
312         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
313         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
314         struct iwl_mcc_update_resp *resp;
315
316         IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
317
318         lockdep_assert_held(&mvm->mutex);
319
320         resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
321         if (IS_ERR_OR_NULL(resp)) {
322                 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
323                               PTR_ERR_OR_ZERO(resp));
324                 goto out;
325         }
326
327         if (changed)
328                 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
329
330         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
331                                       __le32_to_cpu(resp->n_channels),
332                                       resp->channels,
333                                       __le16_to_cpu(resp->mcc));
334         /* Store the return source id */
335         src_id = resp->source_id;
336         kfree(resp);
337         if (IS_ERR_OR_NULL(regd)) {
338                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
339                               PTR_ERR_OR_ZERO(regd));
340                 goto out;
341         }
342
343         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
344                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
345         mvm->lar_regdom_set = true;
346         mvm->mcc_src = src_id;
347
348 out:
349         return regd;
350 }
351
352 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
353 {
354         bool changed;
355         struct ieee80211_regdomain *regd;
356
357         if (!iwl_mvm_is_lar_supported(mvm))
358                 return;
359
360         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
361         if (!IS_ERR_OR_NULL(regd)) {
362                 /* only update the regulatory core if changed */
363                 if (changed)
364                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
365
366                 kfree(regd);
367         }
368 }
369
370 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
371                                                           bool *changed)
372 {
373         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
374                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
375                                      MCC_SOURCE_GET_CURRENT :
376                                      MCC_SOURCE_OLD_FW, changed);
377 }
378
379 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
380 {
381         enum iwl_mcc_source used_src;
382         struct ieee80211_regdomain *regd;
383         int ret;
384         bool changed;
385         const struct ieee80211_regdomain *r =
386                         rtnl_dereference(mvm->hw->wiphy->regd);
387
388         if (!r)
389                 return -ENOENT;
390
391         /* save the last source in case we overwrite it below */
392         used_src = mvm->mcc_src;
393         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
394                 /* Notify the firmware we support wifi location updates */
395                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
396                 if (!IS_ERR_OR_NULL(regd))
397                         kfree(regd);
398         }
399
400         /* Now set our last stored MCC and source */
401         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
402                                      &changed);
403         if (IS_ERR_OR_NULL(regd))
404                 return -EIO;
405
406         /* update cfg80211 if the regdomain was changed */
407         if (changed)
408                 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
409         else
410                 ret = 0;
411
412         kfree(regd);
413         return ret;
414 }
415
416 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
417 {
418         struct ieee80211_hw *hw = mvm->hw;
419         int num_mac, ret, i;
420         static const u32 mvm_ciphers[] = {
421                 WLAN_CIPHER_SUITE_WEP40,
422                 WLAN_CIPHER_SUITE_WEP104,
423                 WLAN_CIPHER_SUITE_TKIP,
424                 WLAN_CIPHER_SUITE_CCMP,
425         };
426
427         /* Tell mac80211 our characteristics */
428         ieee80211_hw_set(hw, SIGNAL_DBM);
429         ieee80211_hw_set(hw, SPECTRUM_MGMT);
430         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
431         ieee80211_hw_set(hw, QUEUE_CONTROL);
432         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
433         ieee80211_hw_set(hw, SUPPORTS_PS);
434         ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
435         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
436         ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
437         ieee80211_hw_set(hw, CONNECTION_MONITOR);
438         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
439         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
440         ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
441         ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
442         ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
443
444         if (mvm->trans->max_skb_frags)
445                 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
446
447         hw->queues = mvm->first_agg_queue;
448         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
449         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
450                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
451         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
452                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
453         hw->rate_control_algorithm = "iwl-mvm-rs";
454         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
455         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
456
457         BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2);
458         memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
459         hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
460         hw->wiphy->cipher_suites = mvm->ciphers;
461
462         /*
463          * Enable 11w if advertised by firmware and software crypto
464          * is not enabled (as the firmware will interpret some mgmt
465          * packets, so enabling it with software crypto isn't safe)
466          */
467         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
468             !iwlwifi_mod_params.sw_crypto) {
469                 ieee80211_hw_set(hw, MFP_CAPABLE);
470                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
471                         WLAN_CIPHER_SUITE_AES_CMAC;
472                 hw->wiphy->n_cipher_suites++;
473         }
474
475         /* currently FW API supports only one optional cipher scheme */
476         if (mvm->fw->cs[0].cipher) {
477                 mvm->hw->n_cipher_schemes = 1;
478                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
479                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
480                         mvm->fw->cs[0].cipher;
481                 hw->wiphy->n_cipher_suites++;
482         }
483
484         ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
485         hw->wiphy->features |=
486                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
487                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
488                 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
489
490         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
491         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
492         hw->chanctx_data_size = sizeof(u16);
493
494         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
495                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
496                 BIT(NL80211_IFTYPE_AP) |
497                 BIT(NL80211_IFTYPE_P2P_GO) |
498                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
499                 BIT(NL80211_IFTYPE_ADHOC);
500
501         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
502         hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
503         if (iwl_mvm_is_lar_supported(mvm))
504                 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
505         else
506                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
507                                                REGULATORY_DISABLE_BEACON_HINTS;
508
509         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
510                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
511
512         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
513
514         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
515         hw->wiphy->n_iface_combinations =
516                 ARRAY_SIZE(iwl_mvm_iface_combinations);
517
518         hw->wiphy->max_remain_on_channel_duration = 10000;
519         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
520         /* we can compensate an offset of up to 3 channels = 15 MHz */
521         hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
522
523         /* Extract MAC address */
524         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
525         hw->wiphy->addresses = mvm->addresses;
526         hw->wiphy->n_addresses = 1;
527
528         /* Extract additional MAC addresses if available */
529         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
530                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
531
532         for (i = 1; i < num_mac; i++) {
533                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
534                        ETH_ALEN);
535                 mvm->addresses[i].addr[5]++;
536                 hw->wiphy->n_addresses++;
537         }
538
539         iwl_mvm_reset_phy_ctxts(mvm);
540
541         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
542
543         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
544
545         BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
546         BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
547                      IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
548
549         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
550                 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
551         else
552                 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
553
554         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
555                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
556                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
557         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
558                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
559                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
560
561                 if (fw_has_capa(&mvm->fw->ucode_capa,
562                                 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
563                     fw_has_api(&mvm->fw->ucode_capa,
564                                IWL_UCODE_TLV_API_LQ_SS_PARAMS))
565                         hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
566                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
567         }
568
569         hw->wiphy->hw_version = mvm->trans->hw_id;
570
571         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
572                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
573         else
574                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
575
576         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
577         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
578         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
579         /* we create the 802.11 header and zero length SSID IE. */
580         hw->wiphy->max_sched_scan_ie_len =
581                 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
582         hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
583         hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
584
585         /*
586          * the firmware uses u8 for num of iterations, but 0xff is saved for
587          * infinite loop, so the maximum number of iterations is actually 254.
588          */
589         hw->wiphy->max_sched_scan_plan_iterations = 254;
590
591         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
592                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
593                                NL80211_FEATURE_P2P_GO_OPPPS |
594                                NL80211_FEATURE_DYNAMIC_SMPS |
595                                NL80211_FEATURE_STATIC_SMPS |
596                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
597
598         if (fw_has_capa(&mvm->fw->ucode_capa,
599                         IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
600                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
601         if (fw_has_capa(&mvm->fw->ucode_capa,
602                         IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
603                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
604
605         if (fw_has_capa(&mvm->fw->ucode_capa,
606                         IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
607                 hw->wiphy->features |=
608                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
609
610         if (fw_has_capa(&mvm->fw->ucode_capa,
611                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
612                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
613
614         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
615
616 #ifdef CONFIG_PM_SLEEP
617         if (iwl_mvm_is_d0i3_supported(mvm) &&
618             device_can_wakeup(mvm->trans->dev)) {
619                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
620                 hw->wiphy->wowlan = &mvm->wowlan;
621         }
622
623         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
624             mvm->trans->ops->d3_suspend &&
625             mvm->trans->ops->d3_resume &&
626             device_can_wakeup(mvm->trans->dev)) {
627                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
628                                      WIPHY_WOWLAN_DISCONNECT |
629                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
630                                      WIPHY_WOWLAN_RFKILL_RELEASE |
631                                      WIPHY_WOWLAN_NET_DETECT;
632                 if (!iwlwifi_mod_params.sw_crypto)
633                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
634                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
635                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
636
637                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
638                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
639                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
640                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
641                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
642                 hw->wiphy->wowlan = &mvm->wowlan;
643         }
644 #endif
645
646 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
647         /* assign default bcast filtering configuration */
648         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
649 #endif
650
651         ret = iwl_mvm_leds_init(mvm);
652         if (ret)
653                 return ret;
654
655         if (fw_has_capa(&mvm->fw->ucode_capa,
656                         IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
657                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
658                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
659                 ieee80211_hw_set(hw, TDLS_WIDER_BW);
660         }
661
662         if (fw_has_capa(&mvm->fw->ucode_capa,
663                         IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
664                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
665                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
666         }
667
668         hw->netdev_features |= mvm->cfg->features;
669         if (!iwl_mvm_is_csum_supported(mvm))
670                 hw->netdev_features &= ~NETIF_F_RXCSUM;
671
672         if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
673                 hw->netdev_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
674                         NETIF_F_TSO | NETIF_F_TSO6;
675
676         ret = ieee80211_register_hw(mvm->hw);
677         if (ret)
678                 iwl_mvm_leds_exit(mvm);
679
680         return ret;
681 }
682
683 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
684                              struct ieee80211_sta *sta,
685                              struct sk_buff *skb)
686 {
687         struct iwl_mvm_sta *mvmsta;
688         bool defer = false;
689
690         /*
691          * double check the IN_D0I3 flag both before and after
692          * taking the spinlock, in order to prevent taking
693          * the spinlock when not needed.
694          */
695         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
696                 return false;
697
698         spin_lock(&mvm->d0i3_tx_lock);
699         /*
700          * testing the flag again ensures the skb dequeue
701          * loop (on d0i3 exit) hasn't run yet.
702          */
703         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
704                 goto out;
705
706         mvmsta = iwl_mvm_sta_from_mac80211(sta);
707         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
708             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
709                 goto out;
710
711         __skb_queue_tail(&mvm->d0i3_tx, skb);
712         ieee80211_stop_queues(mvm->hw);
713
714         /* trigger wakeup */
715         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
716         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
717
718         defer = true;
719 out:
720         spin_unlock(&mvm->d0i3_tx_lock);
721         return defer;
722 }
723
724 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
725                            struct ieee80211_tx_control *control,
726                            struct sk_buff *skb)
727 {
728         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
729         struct ieee80211_sta *sta = control->sta;
730         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
731         struct ieee80211_hdr *hdr = (void *)skb->data;
732
733         if (iwl_mvm_is_radio_killed(mvm)) {
734                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
735                 goto drop;
736         }
737
738         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
739             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
740             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
741                 goto drop;
742
743         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
744         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
745                      ieee80211_is_mgmt(hdr->frame_control) &&
746                      !ieee80211_is_deauth(hdr->frame_control) &&
747                      !ieee80211_is_disassoc(hdr->frame_control) &&
748                      !ieee80211_is_action(hdr->frame_control)))
749                 sta = NULL;
750
751         if (sta) {
752                 if (iwl_mvm_defer_tx(mvm, sta, skb))
753                         return;
754                 if (iwl_mvm_tx_skb(mvm, skb, sta))
755                         goto drop;
756                 return;
757         }
758
759         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
760                 goto drop;
761         return;
762  drop:
763         ieee80211_free_txskb(hw, skb);
764 }
765
766 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
767 {
768         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
769                 return false;
770         return true;
771 }
772
773 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
774 {
775         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
776                 return false;
777         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
778                 return true;
779
780         /* enabled by default */
781         return true;
782 }
783
784 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)   \
785         do {                                                    \
786                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))        \
787                         break;                                  \
788                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
789         } while (0)
790
791 static void
792 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
793                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
794                             enum ieee80211_ampdu_mlme_action action)
795 {
796         struct iwl_fw_dbg_trigger_tlv *trig;
797         struct iwl_fw_dbg_trigger_ba *ba_trig;
798
799         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
800                 return;
801
802         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
803         ba_trig = (void *)trig->data;
804
805         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
806                 return;
807
808         switch (action) {
809         case IEEE80211_AMPDU_TX_OPERATIONAL: {
810                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
811                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
812
813                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
814                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
815                                  sta->addr, tid, tid_data->ssn);
816                 break;
817                 }
818         case IEEE80211_AMPDU_TX_STOP_CONT:
819                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
820                                  "TX AGG STOP: MAC %pM tid %d\n",
821                                  sta->addr, tid);
822                 break;
823         case IEEE80211_AMPDU_RX_START:
824                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
825                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
826                                  sta->addr, tid, rx_ba_ssn);
827                 break;
828         case IEEE80211_AMPDU_RX_STOP:
829                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
830                                  "RX AGG STOP: MAC %pM tid %d\n",
831                                  sta->addr, tid);
832                 break;
833         default:
834                 break;
835         }
836 }
837
838 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
839                                     struct ieee80211_vif *vif,
840                                     struct ieee80211_ampdu_params *params)
841 {
842         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
843         int ret;
844         bool tx_agg_ref = false;
845         struct ieee80211_sta *sta = params->sta;
846         enum ieee80211_ampdu_mlme_action action = params->action;
847         u16 tid = params->tid;
848         u16 *ssn = &params->ssn;
849         u8 buf_size = params->buf_size;
850
851         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
852                      sta->addr, tid, action);
853
854         if (!(mvm->nvm_data->sku_cap_11n_enable))
855                 return -EACCES;
856
857         /* return from D0i3 before starting a new Tx aggregation */
858         switch (action) {
859         case IEEE80211_AMPDU_TX_START:
860         case IEEE80211_AMPDU_TX_STOP_CONT:
861         case IEEE80211_AMPDU_TX_STOP_FLUSH:
862         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
863         case IEEE80211_AMPDU_TX_OPERATIONAL:
864                 /*
865                  * for tx start, wait synchronously until D0i3 exit to
866                  * get the correct sequence number for the tid.
867                  * additionally, some other ampdu actions use direct
868                  * target access, which is not handled automatically
869                  * by the trans layer (unlike commands), so wait for
870                  * d0i3 exit in these cases as well.
871                  */
872                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
873                 if (ret)
874                         return ret;
875
876                 tx_agg_ref = true;
877                 break;
878         default:
879                 break;
880         }
881
882         mutex_lock(&mvm->mutex);
883
884         switch (action) {
885         case IEEE80211_AMPDU_RX_START:
886                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
887                         ret = -EINVAL;
888                         break;
889                 }
890                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size);
891                 break;
892         case IEEE80211_AMPDU_RX_STOP:
893                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size);
894                 break;
895         case IEEE80211_AMPDU_TX_START:
896                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
897                         ret = -EINVAL;
898                         break;
899                 }
900                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
901                 break;
902         case IEEE80211_AMPDU_TX_STOP_CONT:
903                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
904                 break;
905         case IEEE80211_AMPDU_TX_STOP_FLUSH:
906         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
907                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
908                 break;
909         case IEEE80211_AMPDU_TX_OPERATIONAL:
910                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
911                 break;
912         default:
913                 WARN_ON_ONCE(1);
914                 ret = -EINVAL;
915                 break;
916         }
917
918         if (!ret) {
919                 u16 rx_ba_ssn = 0;
920
921                 if (action == IEEE80211_AMPDU_RX_START)
922                         rx_ba_ssn = *ssn;
923
924                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
925                                             rx_ba_ssn, action);
926         }
927         mutex_unlock(&mvm->mutex);
928
929         /*
930          * If the tid is marked as started, we won't use it for offloaded
931          * traffic on the next D0i3 entry. It's safe to unref.
932          */
933         if (tx_agg_ref)
934                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
935
936         return ret;
937 }
938
939 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
940                                      struct ieee80211_vif *vif)
941 {
942         struct iwl_mvm *mvm = data;
943         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
944
945         mvmvif->uploaded = false;
946         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
947
948         spin_lock_bh(&mvm->time_event_lock);
949         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
950         spin_unlock_bh(&mvm->time_event_lock);
951
952         mvmvif->phy_ctxt = NULL;
953         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
954 }
955
956 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
957 {
958         /* clear the D3 reconfig, we only need it to avoid dumping a
959          * firmware coredump on reconfiguration, we shouldn't do that
960          * on D3->D0 transition
961          */
962         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
963                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
964                 iwl_mvm_fw_error_dump(mvm);
965         }
966
967         /* cleanup all stale references (scan, roc), but keep the
968          * ucode_down ref until reconfig is complete
969          */
970         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
971
972         iwl_trans_stop_device(mvm->trans);
973
974         mvm->scan_status = 0;
975         mvm->ps_disabled = false;
976         mvm->calibrating = false;
977
978         /* just in case one was running */
979         iwl_mvm_cleanup_roc_te(mvm);
980         ieee80211_remain_on_channel_expired(mvm->hw);
981
982         /*
983          * cleanup all interfaces, even inactive ones, as some might have
984          * gone down during the HW restart
985          */
986         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
987
988         mvm->p2p_device_vif = NULL;
989         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
990
991         iwl_mvm_reset_phy_ctxts(mvm);
992         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
993         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
994         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
995         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
996         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
997         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
998         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
999         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1000         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1001
1002         ieee80211_wake_queues(mvm->hw);
1003
1004         /* clear any stale d0i3 state */
1005         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1006
1007         mvm->vif_count = 0;
1008         mvm->rx_ba_sessions = 0;
1009         mvm->fw_dbg_conf = FW_DBG_INVALID;
1010
1011         /* keep statistics ticking */
1012         iwl_mvm_accu_radio_stats(mvm);
1013 }
1014
1015 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1016 {
1017         int ret;
1018
1019         lockdep_assert_held(&mvm->mutex);
1020
1021         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1022                 /* Clean up some internal and mac80211 state on restart */
1023                 iwl_mvm_restart_cleanup(mvm);
1024         } else {
1025                 /* Hold the reference to prevent runtime suspend while
1026                  * the start procedure runs.  It's a bit confusing
1027                  * that the UCODE_DOWN reference is taken, but it just
1028                  * means "UCODE is not UP yet". ( TODO: rename this
1029                  * reference).
1030                  */
1031                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1032         }
1033         ret = iwl_mvm_up(mvm);
1034
1035         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1036                 /* Something went wrong - we need to finish some cleanup
1037                  * that normally iwl_mvm_mac_restart_complete() below
1038                  * would do.
1039                  */
1040                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1041                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1042         }
1043
1044         return ret;
1045 }
1046
1047 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1048 {
1049         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1050         int ret;
1051
1052         /* Some hw restart cleanups must not hold the mutex */
1053         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1054                 /*
1055                  * Make sure we are out of d0i3. This is needed
1056                  * to make sure the reference accounting is correct
1057                  * (and there is no stale d0i3_exit_work).
1058                  */
1059                 wait_event_timeout(mvm->d0i3_exit_waitq,
1060                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1061                                              &mvm->status),
1062                                    HZ);
1063         }
1064
1065         mutex_lock(&mvm->mutex);
1066         ret = __iwl_mvm_mac_start(mvm);
1067         mutex_unlock(&mvm->mutex);
1068
1069         return ret;
1070 }
1071
1072 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1073 {
1074         int ret;
1075
1076         mutex_lock(&mvm->mutex);
1077
1078         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1079         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1080         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1081         if (ret)
1082                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1083                         ret);
1084
1085         /* allow transport/FW low power modes */
1086         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1087
1088         /*
1089          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1090          * of packets the FW sent out, so we must reconnect.
1091          */
1092         iwl_mvm_teardown_tdls_peers(mvm);
1093
1094         mutex_unlock(&mvm->mutex);
1095 }
1096
1097 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1098 {
1099         if (iwl_mvm_is_d0i3_supported(mvm) &&
1100             iwl_mvm_enter_d0i3_on_suspend(mvm))
1101                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1102                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1103                                                         &mvm->status),
1104                                               HZ),
1105                           "D0i3 exit on resume timed out\n");
1106 }
1107
1108 static void
1109 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1110                               enum ieee80211_reconfig_type reconfig_type)
1111 {
1112         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1113
1114         switch (reconfig_type) {
1115         case IEEE80211_RECONFIG_TYPE_RESTART:
1116                 iwl_mvm_restart_complete(mvm);
1117                 break;
1118         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1119                 iwl_mvm_resume_complete(mvm);
1120                 break;
1121         }
1122 }
1123
1124 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1125 {
1126         lockdep_assert_held(&mvm->mutex);
1127
1128         /* firmware counters are obviously reset now, but we shouldn't
1129          * partially track so also clear the fw_reset_accu counters.
1130          */
1131         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1132
1133         /* async_handlers_wk is now blocked */
1134
1135         /*
1136          * The work item could be running or queued if the
1137          * ROC time event stops just as we get here.
1138          */
1139         flush_work(&mvm->roc_done_wk);
1140
1141         iwl_trans_stop_device(mvm->trans);
1142
1143         iwl_mvm_async_handlers_purge(mvm);
1144         /* async_handlers_list is empty and will stay empty: HW is stopped */
1145
1146         /* the fw is stopped, the aux sta is dead: clean up driver state */
1147         iwl_mvm_del_aux_sta(mvm);
1148
1149         /*
1150          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1151          * won't be called in this case).
1152          * But make sure to cleanup interfaces that have gone down before/during
1153          * HW restart was requested.
1154          */
1155         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1156                 ieee80211_iterate_interfaces(mvm->hw, 0,
1157                                              iwl_mvm_cleanup_iterator, mvm);
1158
1159         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1160          * make sure there's nothing left there and warn if any is found.
1161          */
1162         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1163                 int i;
1164
1165                 for (i = 0; i < mvm->max_scans; i++) {
1166                         if (WARN_ONCE(mvm->scan_uid_status[i],
1167                                       "UMAC scan UID %d status was not cleaned\n",
1168                                       i))
1169                                 mvm->scan_uid_status[i] = 0;
1170                 }
1171         }
1172
1173         mvm->ucode_loaded = false;
1174 }
1175
1176 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1177 {
1178         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1179
1180         flush_work(&mvm->d0i3_exit_work);
1181         flush_work(&mvm->async_handlers_wk);
1182         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1183         iwl_mvm_free_fw_dump_desc(mvm);
1184
1185         mutex_lock(&mvm->mutex);
1186         __iwl_mvm_mac_stop(mvm);
1187         mutex_unlock(&mvm->mutex);
1188
1189         /*
1190          * The worker might have been waiting for the mutex, let it run and
1191          * discover that its list is now empty.
1192          */
1193         cancel_work_sync(&mvm->async_handlers_wk);
1194 }
1195
1196 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1197 {
1198         u16 i;
1199
1200         lockdep_assert_held(&mvm->mutex);
1201
1202         for (i = 0; i < NUM_PHY_CTX; i++)
1203                 if (!mvm->phy_ctxts[i].ref)
1204                         return &mvm->phy_ctxts[i];
1205
1206         IWL_ERR(mvm, "No available PHY context\n");
1207         return NULL;
1208 }
1209
1210 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1211                                 s16 tx_power)
1212 {
1213         struct iwl_dev_tx_power_cmd cmd = {
1214                 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1215                 .v2.mac_context_id =
1216                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1217                 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1218         };
1219         int len = sizeof(cmd);
1220
1221         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1222                 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1223
1224         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1225                 len = sizeof(cmd.v2);
1226
1227         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1228 }
1229
1230 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1231                                      struct ieee80211_vif *vif)
1232 {
1233         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1234         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1235         int ret;
1236
1237         mvmvif->mvm = mvm;
1238
1239         /*
1240          * make sure D0i3 exit is completed, otherwise a target access
1241          * during tx queue configuration could be done when still in
1242          * D0i3 state.
1243          */
1244         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1245         if (ret)
1246                 return ret;
1247
1248         /*
1249          * Not much to do here. The stack will not allow interface
1250          * types or combinations that we didn't advertise, so we
1251          * don't really have to check the types.
1252          */
1253
1254         mutex_lock(&mvm->mutex);
1255
1256         /* make sure that beacon statistics don't go backwards with FW reset */
1257         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1258                 mvmvif->beacon_stats.accu_num_beacons +=
1259                         mvmvif->beacon_stats.num_beacons;
1260
1261         /* Allocate resources for the MAC context, and add it to the fw  */
1262         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1263         if (ret)
1264                 goto out_unlock;
1265
1266         /* Counting number of interfaces is needed for legacy PM */
1267         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1268                 mvm->vif_count++;
1269
1270         /*
1271          * The AP binding flow can be done only after the beacon
1272          * template is configured (which happens only in the mac80211
1273          * start_ap() flow), and adding the broadcast station can happen
1274          * only after the binding.
1275          * In addition, since modifying the MAC before adding a bcast
1276          * station is not allowed by the FW, delay the adding of MAC context to
1277          * the point where we can also add the bcast station.
1278          * In short: there's not much we can do at this point, other than
1279          * allocating resources :)
1280          */
1281         if (vif->type == NL80211_IFTYPE_AP ||
1282             vif->type == NL80211_IFTYPE_ADHOC) {
1283                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1284                 if (ret) {
1285                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1286                         goto out_release;
1287                 }
1288
1289                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1290                 goto out_unlock;
1291         }
1292
1293         mvmvif->features |= hw->netdev_features;
1294
1295         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1296         if (ret)
1297                 goto out_release;
1298
1299         ret = iwl_mvm_power_update_mac(mvm);
1300         if (ret)
1301                 goto out_remove_mac;
1302
1303         /* beacon filtering */
1304         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1305         if (ret)
1306                 goto out_remove_mac;
1307
1308         if (!mvm->bf_allowed_vif &&
1309             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1310                 mvm->bf_allowed_vif = mvmvif;
1311                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1312                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1313         }
1314
1315         /*
1316          * P2P_DEVICE interface does not have a channel context assigned to it,
1317          * so a dedicated PHY context is allocated to it and the corresponding
1318          * MAC context is bound to it at this stage.
1319          */
1320         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1321
1322                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1323                 if (!mvmvif->phy_ctxt) {
1324                         ret = -ENOSPC;
1325                         goto out_free_bf;
1326                 }
1327
1328                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1329                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1330                 if (ret)
1331                         goto out_unref_phy;
1332
1333                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1334                 if (ret)
1335                         goto out_unbind;
1336
1337                 /* Save a pointer to p2p device vif, so it can later be used to
1338                  * update the p2p device MAC when a GO is started/stopped */
1339                 mvm->p2p_device_vif = vif;
1340         }
1341
1342         iwl_mvm_vif_dbgfs_register(mvm, vif);
1343         goto out_unlock;
1344
1345  out_unbind:
1346         iwl_mvm_binding_remove_vif(mvm, vif);
1347  out_unref_phy:
1348         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1349  out_free_bf:
1350         if (mvm->bf_allowed_vif == mvmvif) {
1351                 mvm->bf_allowed_vif = NULL;
1352                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1353                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1354         }
1355  out_remove_mac:
1356         mvmvif->phy_ctxt = NULL;
1357         iwl_mvm_mac_ctxt_remove(mvm, vif);
1358  out_release:
1359         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1360                 mvm->vif_count--;
1361
1362         iwl_mvm_mac_ctxt_release(mvm, vif);
1363  out_unlock:
1364         mutex_unlock(&mvm->mutex);
1365
1366         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1367
1368         return ret;
1369 }
1370
1371 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1372                                         struct ieee80211_vif *vif)
1373 {
1374         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1375
1376         if (tfd_msk) {
1377                 /*
1378                  * mac80211 first removes all the stations of the vif and
1379                  * then removes the vif. When it removes a station it also
1380                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1381                  * of all the stations of this vif are closed, and the queues
1382                  * of these AMPDU sessions are properly closed.
1383                  * We still need to take care of the shared queues of the vif.
1384                  * Flush them here.
1385                  */
1386                 mutex_lock(&mvm->mutex);
1387                 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1388                 mutex_unlock(&mvm->mutex);
1389
1390                 /*
1391                  * There are transports that buffer a few frames in the host.
1392                  * For these, the flush above isn't enough since while we were
1393                  * flushing, the transport might have sent more frames to the
1394                  * device. To solve this, wait here until the transport is
1395                  * empty. Technically, this could have replaced the flush
1396                  * above, but flush is much faster than draining. So flush
1397                  * first, and drain to make sure we have no frames in the
1398                  * transport anymore.
1399                  * If a station still had frames on the shared queues, it is
1400                  * already marked as draining, so to complete the draining, we
1401                  * just need to wait until the transport is empty.
1402                  */
1403                 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1404         }
1405
1406         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1407                 /*
1408                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1409                  * We assume here that all the packets sent to the OFFCHANNEL
1410                  * queue are sent in ROC session.
1411                  */
1412                 flush_work(&mvm->roc_done_wk);
1413         } else {
1414                 /*
1415                  * By now, all the AC queues are empty. The AGG queues are
1416                  * empty too. We already got all the Tx responses for all the
1417                  * packets in the queues. The drain work can have been
1418                  * triggered. Flush it.
1419                  */
1420                 flush_work(&mvm->sta_drained_wk);
1421         }
1422 }
1423
1424 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1425                                          struct ieee80211_vif *vif)
1426 {
1427         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1428         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1429
1430         iwl_mvm_prepare_mac_removal(mvm, vif);
1431
1432         mutex_lock(&mvm->mutex);
1433
1434         if (mvm->bf_allowed_vif == mvmvif) {
1435                 mvm->bf_allowed_vif = NULL;
1436                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1437                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1438         }
1439
1440         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1441
1442         /*
1443          * For AP/GO interface, the tear down of the resources allocated to the
1444          * interface is be handled as part of the stop_ap flow.
1445          */
1446         if (vif->type == NL80211_IFTYPE_AP ||
1447             vif->type == NL80211_IFTYPE_ADHOC) {
1448 #ifdef CONFIG_NL80211_TESTMODE
1449                 if (vif == mvm->noa_vif) {
1450                         mvm->noa_vif = NULL;
1451                         mvm->noa_duration = 0;
1452                 }
1453 #endif
1454                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1455                 goto out_release;
1456         }
1457
1458         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1459                 mvm->p2p_device_vif = NULL;
1460                 iwl_mvm_rm_bcast_sta(mvm, vif);
1461                 iwl_mvm_binding_remove_vif(mvm, vif);
1462                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1463                 mvmvif->phy_ctxt = NULL;
1464         }
1465
1466         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1467                 mvm->vif_count--;
1468
1469         iwl_mvm_power_update_mac(mvm);
1470         iwl_mvm_mac_ctxt_remove(mvm, vif);
1471
1472 out_release:
1473         iwl_mvm_mac_ctxt_release(mvm, vif);
1474         mutex_unlock(&mvm->mutex);
1475 }
1476
1477 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1478 {
1479         return 0;
1480 }
1481
1482 struct iwl_mvm_mc_iter_data {
1483         struct iwl_mvm *mvm;
1484         int port_id;
1485 };
1486
1487 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1488                                       struct ieee80211_vif *vif)
1489 {
1490         struct iwl_mvm_mc_iter_data *data = _data;
1491         struct iwl_mvm *mvm = data->mvm;
1492         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1493         int ret, len;
1494
1495         /* if we don't have free ports, mcast frames will be dropped */
1496         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1497                 return;
1498
1499         if (vif->type != NL80211_IFTYPE_STATION ||
1500             !vif->bss_conf.assoc)
1501                 return;
1502
1503         cmd->port_id = data->port_id++;
1504         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1505         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1506
1507         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1508         if (ret)
1509                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1510 }
1511
1512 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1513 {
1514         struct iwl_mvm_mc_iter_data iter_data = {
1515                 .mvm = mvm,
1516         };
1517
1518         lockdep_assert_held(&mvm->mutex);
1519
1520         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1521                 return;
1522
1523         ieee80211_iterate_active_interfaces_atomic(
1524                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1525                 iwl_mvm_mc_iface_iterator, &iter_data);
1526 }
1527
1528 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1529                                      struct netdev_hw_addr_list *mc_list)
1530 {
1531         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1532         struct iwl_mcast_filter_cmd *cmd;
1533         struct netdev_hw_addr *addr;
1534         int addr_count;
1535         bool pass_all;
1536         int len;
1537
1538         addr_count = netdev_hw_addr_list_count(mc_list);
1539         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1540                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1541         if (pass_all)
1542                 addr_count = 0;
1543
1544         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1545         cmd = kzalloc(len, GFP_ATOMIC);
1546         if (!cmd)
1547                 return 0;
1548
1549         if (pass_all) {
1550                 cmd->pass_all = 1;
1551                 return (u64)(unsigned long)cmd;
1552         }
1553
1554         netdev_hw_addr_list_for_each(addr, mc_list) {
1555                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1556                                    cmd->count, addr->addr);
1557                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1558                        addr->addr, ETH_ALEN);
1559                 cmd->count++;
1560         }
1561
1562         return (u64)(unsigned long)cmd;
1563 }
1564
1565 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1566                                      unsigned int changed_flags,
1567                                      unsigned int *total_flags,
1568                                      u64 multicast)
1569 {
1570         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1571         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1572
1573         mutex_lock(&mvm->mutex);
1574
1575         /* replace previous configuration */
1576         kfree(mvm->mcast_filter_cmd);
1577         mvm->mcast_filter_cmd = cmd;
1578
1579         if (!cmd)
1580                 goto out;
1581
1582         iwl_mvm_recalc_multicast(mvm);
1583 out:
1584         mutex_unlock(&mvm->mutex);
1585         *total_flags = 0;
1586 }
1587
1588 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1589                                         struct ieee80211_vif *vif,
1590                                         unsigned int filter_flags,
1591                                         unsigned int changed_flags)
1592 {
1593         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1594
1595         /* We support only filter for probe requests */
1596         if (!(changed_flags & FIF_PROBE_REQ))
1597                 return;
1598
1599         /* Supported only for p2p client interfaces */
1600         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1601             !vif->p2p)
1602                 return;
1603
1604         mutex_lock(&mvm->mutex);
1605         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1606         mutex_unlock(&mvm->mutex);
1607 }
1608
1609 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1610 struct iwl_bcast_iter_data {
1611         struct iwl_mvm *mvm;
1612         struct iwl_bcast_filter_cmd *cmd;
1613         u8 current_filter;
1614 };
1615
1616 static void
1617 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1618                          const struct iwl_fw_bcast_filter *in_filter,
1619                          struct iwl_fw_bcast_filter *out_filter)
1620 {
1621         struct iwl_fw_bcast_filter_attr *attr;
1622         int i;
1623
1624         memcpy(out_filter, in_filter, sizeof(*out_filter));
1625
1626         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1627                 attr = &out_filter->attrs[i];
1628
1629                 if (!attr->mask)
1630                         break;
1631
1632                 switch (attr->reserved1) {
1633                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1634                         if (vif->bss_conf.arp_addr_cnt != 1) {
1635                                 attr->mask = 0;
1636                                 continue;
1637                         }
1638
1639                         attr->val = vif->bss_conf.arp_addr_list[0];
1640                         break;
1641                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1642                         attr->val = *(__be32 *)&vif->addr[2];
1643                         break;
1644                 default:
1645                         break;
1646                 }
1647                 attr->reserved1 = 0;
1648                 out_filter->num_attrs++;
1649         }
1650 }
1651
1652 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1653                                           struct ieee80211_vif *vif)
1654 {
1655         struct iwl_bcast_iter_data *data = _data;
1656         struct iwl_mvm *mvm = data->mvm;
1657         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1658         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1659         struct iwl_fw_bcast_mac *bcast_mac;
1660         int i;
1661
1662         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1663                 return;
1664
1665         bcast_mac = &cmd->macs[mvmvif->id];
1666
1667         /*
1668          * enable filtering only for associated stations, but not for P2P
1669          * Clients
1670          */
1671         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1672             !vif->bss_conf.assoc)
1673                 return;
1674
1675         bcast_mac->default_discard = 1;
1676
1677         /* copy all configured filters */
1678         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1679                 /*
1680                  * Make sure we don't exceed our filters limit.
1681                  * if there is still a valid filter to be configured,
1682                  * be on the safe side and just allow bcast for this mac.
1683                  */
1684                 if (WARN_ON_ONCE(data->current_filter >=
1685                                  ARRAY_SIZE(cmd->filters))) {
1686                         bcast_mac->default_discard = 0;
1687                         bcast_mac->attached_filters = 0;
1688                         break;
1689                 }
1690
1691                 iwl_mvm_set_bcast_filter(vif,
1692                                          &mvm->bcast_filters[i],
1693                                          &cmd->filters[data->current_filter]);
1694
1695                 /* skip current filter if it contains no attributes */
1696                 if (!cmd->filters[data->current_filter].num_attrs)
1697                         continue;
1698
1699                 /* attach the filter to current mac */
1700                 bcast_mac->attached_filters |=
1701                                 cpu_to_le16(BIT(data->current_filter));
1702
1703                 data->current_filter++;
1704         }
1705 }
1706
1707 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1708                                     struct iwl_bcast_filter_cmd *cmd)
1709 {
1710         struct iwl_bcast_iter_data iter_data = {
1711                 .mvm = mvm,
1712                 .cmd = cmd,
1713         };
1714
1715         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1716                 return false;
1717
1718         memset(cmd, 0, sizeof(*cmd));
1719         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1720         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1721
1722 #ifdef CONFIG_IWLWIFI_DEBUGFS
1723         /* use debugfs filters/macs if override is configured */
1724         if (mvm->dbgfs_bcast_filtering.override) {
1725                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1726                        sizeof(cmd->filters));
1727                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1728                        sizeof(cmd->macs));
1729                 return true;
1730         }
1731 #endif
1732
1733         /* if no filters are configured, do nothing */
1734         if (!mvm->bcast_filters)
1735                 return false;
1736
1737         /* configure and attach these filters for each associated sta vif */
1738         ieee80211_iterate_active_interfaces(
1739                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1740                 iwl_mvm_bcast_filter_iterator, &iter_data);
1741
1742         return true;
1743 }
1744
1745 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1746 {
1747         struct iwl_bcast_filter_cmd cmd;
1748
1749         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1750                 return 0;
1751
1752         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1753                 return 0;
1754
1755         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1756                                     sizeof(cmd), &cmd);
1757 }
1758 #else
1759 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1760 {
1761         return 0;
1762 }
1763 #endif
1764
1765 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1766                                     struct ieee80211_vif *vif)
1767 {
1768         struct iwl_mu_group_mgmt_cmd cmd = {};
1769
1770         memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1771                WLAN_MEMBERSHIP_LEN);
1772         memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1773                WLAN_USER_POSITION_LEN);
1774
1775         return iwl_mvm_send_cmd_pdu(mvm,
1776                                     WIDE_ID(DATA_PATH_GROUP,
1777                                             UPDATE_MU_GROUPS_CMD),
1778                                     0, sizeof(cmd), &cmd);
1779 }
1780
1781 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1782                                              struct ieee80211_vif *vif,
1783                                              struct ieee80211_bss_conf *bss_conf,
1784                                              u32 changes)
1785 {
1786         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1787         int ret;
1788
1789         /*
1790          * Re-calculate the tsf id, as the master-slave relations depend on the
1791          * beacon interval, which was not known when the station interface was
1792          * added.
1793          */
1794         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1795                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1796
1797         /*
1798          * If we're not associated yet, take the (new) BSSID before associating
1799          * so the firmware knows. If we're already associated, then use the old
1800          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1801          * branch for disassociation below.
1802          */
1803         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1804                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1805
1806         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1807         if (ret)
1808                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1809
1810         /* after sending it once, adopt mac80211 data */
1811         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1812         mvmvif->associated = bss_conf->assoc;
1813
1814         if (changes & BSS_CHANGED_ASSOC) {
1815                 if (bss_conf->assoc) {
1816                         /* clear statistics to get clean beacon counter */
1817                         iwl_mvm_request_statistics(mvm, true);
1818                         memset(&mvmvif->beacon_stats, 0,
1819                                sizeof(mvmvif->beacon_stats));
1820
1821                         /* add quota for this interface */
1822                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1823                         if (ret) {
1824                                 IWL_ERR(mvm, "failed to update quotas\n");
1825                                 return;
1826                         }
1827
1828                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1829                                      &mvm->status)) {
1830                                 /*
1831                                  * If we're restarting then the firmware will
1832                                  * obviously have lost synchronisation with
1833                                  * the AP. It will attempt to synchronise by
1834                                  * itself, but we can make it more reliable by
1835                                  * scheduling a session protection time event.
1836                                  *
1837                                  * The firmware needs to receive a beacon to
1838                                  * catch up with synchronisation, use 110% of
1839                                  * the beacon interval.
1840                                  *
1841                                  * Set a large maximum delay to allow for more
1842                                  * than a single interface.
1843                                  */
1844                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1845                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1846                                                         5 * dur, false);
1847                         }
1848
1849                         iwl_mvm_sf_update(mvm, vif, false);
1850                         iwl_mvm_power_vif_assoc(mvm, vif);
1851                         if (vif->p2p) {
1852                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1853                                 iwl_mvm_update_smps(mvm, vif,
1854                                                     IWL_MVM_SMPS_REQ_PROT,
1855                                                     IEEE80211_SMPS_DYNAMIC);
1856                         }
1857                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1858                         /*
1859                          * If update fails - SF might be running in associated
1860                          * mode while disassociated - which is forbidden.
1861                          */
1862                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1863                                   "Failed to update SF upon disassociation\n");
1864
1865                         /* remove AP station now that the MAC is unassoc */
1866                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1867                         if (ret)
1868                                 IWL_ERR(mvm, "failed to remove AP station\n");
1869
1870                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1871                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1872                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1873                         /* remove quota for this interface */
1874                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1875                         if (ret)
1876                                 IWL_ERR(mvm, "failed to update quotas\n");
1877
1878                         if (vif->p2p)
1879                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1880
1881                         /* this will take the cleared BSSID from bss_conf */
1882                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1883                         if (ret)
1884                                 IWL_ERR(mvm,
1885                                         "failed to update MAC %pM (clear after unassoc)\n",
1886                                         vif->addr);
1887                 }
1888
1889                 /*
1890                  * The firmware tracks the MU-MIMO group on its own.
1891                  * However, on HW restart we should restore this data
1892                  */
1893                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1894                     changes & BSS_CHANGED_MU_GROUPS) {
1895                         ret = iwl_mvm_update_mu_groups(mvm, vif);
1896                         if (ret)
1897                                 IWL_ERR(mvm,
1898                                         "failed to update VHT MU_MIMO groups\n");
1899                 }
1900
1901                 iwl_mvm_recalc_multicast(mvm);
1902                 iwl_mvm_configure_bcast_filter(mvm);
1903
1904                 /* reset rssi values */
1905                 mvmvif->bf_data.ave_beacon_signal = 0;
1906
1907                 iwl_mvm_bt_coex_vif_change(mvm);
1908                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1909                                     IEEE80211_SMPS_AUTOMATIC);
1910                 if (fw_has_capa(&mvm->fw->ucode_capa,
1911                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1912                         iwl_mvm_config_scan(mvm);
1913         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1914                 /*
1915                  * We received a beacon _after_ association so
1916                  * remove the session protection.
1917                  */
1918                 iwl_mvm_remove_time_event(mvm, mvmvif,
1919                                           &mvmvif->time_event_data);
1920         }
1921
1922         if (changes & BSS_CHANGED_BEACON_INFO) {
1923                 iwl_mvm_sf_update(mvm, vif, false);
1924                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1925         }
1926
1927         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1928                 ret = iwl_mvm_power_update_mac(mvm);
1929                 if (ret)
1930                         IWL_ERR(mvm, "failed to update power mode\n");
1931         }
1932
1933         if (changes & BSS_CHANGED_TXPOWER) {
1934                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1935                                 bss_conf->txpower);
1936                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1937         }
1938
1939         if (changes & BSS_CHANGED_CQM) {
1940                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1941                 /* reset cqm events tracking */
1942                 mvmvif->bf_data.last_cqm_event = 0;
1943                 if (mvmvif->bf_data.bf_enabled) {
1944                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1945                         if (ret)
1946                                 IWL_ERR(mvm,
1947                                         "failed to update CQM thresholds\n");
1948                 }
1949         }
1950
1951         if (changes & BSS_CHANGED_ARP_FILTER) {
1952                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1953                 iwl_mvm_configure_bcast_filter(mvm);
1954         }
1955 }
1956
1957 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1958                                  struct ieee80211_vif *vif)
1959 {
1960         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1961         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1962         int ret;
1963
1964         /*
1965          * iwl_mvm_mac_ctxt_add() might read directly from the device
1966          * (the system time), so make sure it is available.
1967          */
1968         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1969         if (ret)
1970                 return ret;
1971
1972         mutex_lock(&mvm->mutex);
1973
1974         /* Send the beacon template */
1975         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1976         if (ret)
1977                 goto out_unlock;
1978
1979         /*
1980          * Re-calculate the tsf id, as the master-slave relations depend on the
1981          * beacon interval, which was not known when the AP interface was added.
1982          */
1983         if (vif->type == NL80211_IFTYPE_AP)
1984                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1985
1986         mvmvif->ap_assoc_sta_count = 0;
1987
1988         /* Add the mac context */
1989         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1990         if (ret)
1991                 goto out_unlock;
1992
1993         /* Perform the binding */
1994         ret = iwl_mvm_binding_add_vif(mvm, vif);
1995         if (ret)
1996                 goto out_remove;
1997
1998         /* Send the bcast station. At this stage the TBTT and DTIM time events
1999          * are added and applied to the scheduler */
2000         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2001         if (ret)
2002                 goto out_unbind;
2003
2004         /* must be set before quota calculations */
2005         mvmvif->ap_ibss_active = true;
2006
2007         /* power updated needs to be done before quotas */
2008         iwl_mvm_power_update_mac(mvm);
2009
2010         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2011         if (ret)
2012                 goto out_quota_failed;
2013
2014         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2015         if (vif->p2p && mvm->p2p_device_vif)
2016                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2017
2018         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2019
2020         iwl_mvm_bt_coex_vif_change(mvm);
2021
2022         /* we don't support TDLS during DCM */
2023         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2024                 iwl_mvm_teardown_tdls_peers(mvm);
2025
2026         goto out_unlock;
2027
2028 out_quota_failed:
2029         iwl_mvm_power_update_mac(mvm);
2030         mvmvif->ap_ibss_active = false;
2031         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2032 out_unbind:
2033         iwl_mvm_binding_remove_vif(mvm, vif);
2034 out_remove:
2035         iwl_mvm_mac_ctxt_remove(mvm, vif);
2036 out_unlock:
2037         mutex_unlock(&mvm->mutex);
2038         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2039         return ret;
2040 }
2041
2042 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2043                                  struct ieee80211_vif *vif)
2044 {
2045         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2046         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2047
2048         iwl_mvm_prepare_mac_removal(mvm, vif);
2049
2050         mutex_lock(&mvm->mutex);
2051
2052         /* Handle AP stop while in CSA */
2053         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2054                 iwl_mvm_remove_time_event(mvm, mvmvif,
2055                                           &mvmvif->time_event_data);
2056                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2057                 mvmvif->csa_countdown = false;
2058         }
2059
2060         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2061                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2062                 mvm->csa_tx_block_bcn_timeout = 0;
2063         }
2064
2065         mvmvif->ap_ibss_active = false;
2066         mvm->ap_last_beacon_gp2 = 0;
2067
2068         iwl_mvm_bt_coex_vif_change(mvm);
2069
2070         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2071
2072         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2073         if (vif->p2p && mvm->p2p_device_vif)
2074                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2075
2076         iwl_mvm_update_quotas(mvm, false, NULL);
2077         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2078         iwl_mvm_binding_remove_vif(mvm, vif);
2079
2080         iwl_mvm_power_update_mac(mvm);
2081
2082         iwl_mvm_mac_ctxt_remove(mvm, vif);
2083
2084         mutex_unlock(&mvm->mutex);
2085 }
2086
2087 static void
2088 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2089                                  struct ieee80211_vif *vif,
2090                                  struct ieee80211_bss_conf *bss_conf,
2091                                  u32 changes)
2092 {
2093         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2094
2095         /* Changes will be applied when the AP/IBSS is started */
2096         if (!mvmvif->ap_ibss_active)
2097                 return;
2098
2099         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2100                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2101             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2102                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2103
2104         /* Need to send a new beacon template to the FW */
2105         if (changes & BSS_CHANGED_BEACON &&
2106             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2107                 IWL_WARN(mvm, "Failed updating beacon data\n");
2108
2109         if (changes & BSS_CHANGED_TXPOWER) {
2110                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2111                                 bss_conf->txpower);
2112                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2113         }
2114
2115 }
2116
2117 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2118                                      struct ieee80211_vif *vif,
2119                                      struct ieee80211_bss_conf *bss_conf,
2120                                      u32 changes)
2121 {
2122         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2123
2124         /*
2125          * iwl_mvm_bss_info_changed_station() might call
2126          * iwl_mvm_protect_session(), which reads directly from
2127          * the device (the system time), so make sure it is available.
2128          */
2129         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2130                 return;
2131
2132         mutex_lock(&mvm->mutex);
2133
2134         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2135                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2136
2137         switch (vif->type) {
2138         case NL80211_IFTYPE_STATION:
2139                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2140                 break;
2141         case NL80211_IFTYPE_AP:
2142         case NL80211_IFTYPE_ADHOC:
2143                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2144                 break;
2145         default:
2146                 /* shouldn't happen */
2147                 WARN_ON_ONCE(1);
2148         }
2149
2150         mutex_unlock(&mvm->mutex);
2151         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2152 }
2153
2154 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2155                                struct ieee80211_vif *vif,
2156                                struct ieee80211_scan_request *hw_req)
2157 {
2158         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2159         int ret;
2160
2161         if (hw_req->req.n_channels == 0 ||
2162             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2163                 return -EINVAL;
2164
2165         mutex_lock(&mvm->mutex);
2166         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2167         mutex_unlock(&mvm->mutex);
2168
2169         return ret;
2170 }
2171
2172 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2173                                        struct ieee80211_vif *vif)
2174 {
2175         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2176
2177         mutex_lock(&mvm->mutex);
2178
2179         /* Due to a race condition, it's possible that mac80211 asks
2180          * us to stop a hw_scan when it's already stopped.  This can
2181          * happen, for instance, if we stopped the scan ourselves,
2182          * called ieee80211_scan_completed() and the userspace called
2183          * cancel scan scan before ieee80211_scan_work() could run.
2184          * To handle that, simply return if the scan is not running.
2185         */
2186         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2187                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2188
2189         mutex_unlock(&mvm->mutex);
2190 }
2191
2192 static void
2193 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2194                                   struct ieee80211_sta *sta, u16 tids,
2195                                   int num_frames,
2196                                   enum ieee80211_frame_release_type reason,
2197                                   bool more_data)
2198 {
2199         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2200
2201         /* Called when we need to transmit (a) frame(s) from mac80211 */
2202
2203         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2204                                           tids, more_data, false);
2205 }
2206
2207 static void
2208 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2209                                     struct ieee80211_sta *sta, u16 tids,
2210                                     int num_frames,
2211                                     enum ieee80211_frame_release_type reason,
2212                                     bool more_data)
2213 {
2214         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2215
2216         /* Called when we need to transmit (a) frame(s) from agg queue */
2217
2218         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2219                                           tids, more_data, true);
2220 }
2221
2222 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2223                                    struct ieee80211_vif *vif,
2224                                    enum sta_notify_cmd cmd,
2225                                    struct ieee80211_sta *sta)
2226 {
2227         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2228         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2229         unsigned long txqs = 0, tids = 0;
2230         int tid;
2231
2232         spin_lock_bh(&mvmsta->lock);
2233         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2234                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2235
2236                 if (tid_data->state != IWL_AGG_ON &&
2237                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2238                         continue;
2239
2240                 __set_bit(tid_data->txq_id, &txqs);
2241
2242                 if (iwl_mvm_tid_queued(tid_data) == 0)
2243                         continue;
2244
2245                 __set_bit(tid, &tids);
2246         }
2247
2248         switch (cmd) {
2249         case STA_NOTIFY_SLEEP:
2250                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2251                         ieee80211_sta_block_awake(hw, sta, true);
2252
2253                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2254                         ieee80211_sta_set_buffered(sta, tid, true);
2255
2256                 if (txqs)
2257                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2258                 /*
2259                  * The fw updates the STA to be asleep. Tx packets on the Tx
2260                  * queues to this station will not be transmitted. The fw will
2261                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2262                  */
2263                 break;
2264         case STA_NOTIFY_AWAKE:
2265                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2266                         break;
2267
2268                 if (txqs)
2269                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2270                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2271                 break;
2272         default:
2273                 break;
2274         }
2275         spin_unlock_bh(&mvmsta->lock);
2276 }
2277
2278 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2279                                        struct ieee80211_vif *vif,
2280                                        struct ieee80211_sta *sta)
2281 {
2282         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2283         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2284
2285         /*
2286          * This is called before mac80211 does RCU synchronisation,
2287          * so here we already invalidate our internal RCU-protected
2288          * station pointer. The rest of the code will thus no longer
2289          * be able to find the station this way, and we don't rely
2290          * on further RCU synchronisation after the sta_state()
2291          * callback deleted the station.
2292          */
2293         mutex_lock(&mvm->mutex);
2294         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2295                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2296                                    ERR_PTR(-ENOENT));
2297
2298         mutex_unlock(&mvm->mutex);
2299 }
2300
2301 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2302                                 const u8 *bssid)
2303 {
2304         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2305                 return;
2306
2307         if (iwlwifi_mod_params.uapsd_disable) {
2308                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2309                 return;
2310         }
2311
2312         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2313 }
2314
2315 static void
2316 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2317                            struct ieee80211_vif *vif, u8 *peer_addr,
2318                            enum nl80211_tdls_operation action)
2319 {
2320         struct iwl_fw_dbg_trigger_tlv *trig;
2321         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2322
2323         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2324                 return;
2325
2326         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2327         tdls_trig = (void *)trig->data;
2328         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2329                 return;
2330
2331         if (!(tdls_trig->action_bitmap & BIT(action)))
2332                 return;
2333
2334         if (tdls_trig->peer_mode &&
2335             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2336                 return;
2337
2338         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2339                                     "TDLS event occurred, peer %pM, action %d",
2340                                     peer_addr, action);
2341 }
2342
2343 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2344                                  struct ieee80211_vif *vif,
2345                                  struct ieee80211_sta *sta,
2346                                  enum ieee80211_sta_state old_state,
2347                                  enum ieee80211_sta_state new_state)
2348 {
2349         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2350         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2351         int ret;
2352
2353         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2354                            sta->addr, old_state, new_state);
2355
2356         /* this would be a mac80211 bug ... but don't crash */
2357         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2358                 return -EINVAL;
2359
2360         /* if a STA is being removed, reuse its ID */
2361         flush_work(&mvm->sta_drained_wk);
2362
2363         mutex_lock(&mvm->mutex);
2364         if (old_state == IEEE80211_STA_NOTEXIST &&
2365             new_state == IEEE80211_STA_NONE) {
2366                 /*
2367                  * Firmware bug - it'll crash if the beacon interval is less
2368                  * than 16. We can't avoid connecting at all, so refuse the
2369                  * station state change, this will cause mac80211 to abandon
2370                  * attempts to connect to this AP, and eventually wpa_s will
2371                  * blacklist the AP...
2372                  */
2373                 if (vif->type == NL80211_IFTYPE_STATION &&
2374                     vif->bss_conf.beacon_int < 16) {
2375                         IWL_ERR(mvm,
2376                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2377                                 sta->addr, vif->bss_conf.beacon_int);
2378                         ret = -EINVAL;
2379                         goto out_unlock;
2380                 }
2381
2382                 if (sta->tdls &&
2383                     (vif->p2p ||
2384                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2385                                                 IWL_MVM_TDLS_STA_COUNT ||
2386                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2387                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2388                         ret = -EBUSY;
2389                         goto out_unlock;
2390                 }
2391
2392                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2393                 if (sta->tdls && ret == 0) {
2394                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2395                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2396                                                    NL80211_TDLS_SETUP);
2397                 }
2398         } else if (old_state == IEEE80211_STA_NONE &&
2399                    new_state == IEEE80211_STA_AUTH) {
2400                 /*
2401                  * EBS may be disabled due to previous failures reported by FW.
2402                  * Reset EBS status here assuming environment has been changed.
2403                  */
2404                 mvm->last_ebs_successful = true;
2405                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2406                 ret = 0;
2407         } else if (old_state == IEEE80211_STA_AUTH &&
2408                    new_state == IEEE80211_STA_ASSOC) {
2409                 if (vif->type == NL80211_IFTYPE_AP) {
2410                         mvmvif->ap_assoc_sta_count++;
2411                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2412                 }
2413                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2414                 if (ret == 0)
2415                         iwl_mvm_rs_rate_init(mvm, sta,
2416                                              mvmvif->phy_ctxt->channel->band,
2417                                              true);
2418         } else if (old_state == IEEE80211_STA_ASSOC &&
2419                    new_state == IEEE80211_STA_AUTHORIZED) {
2420
2421                 /* we don't support TDLS during DCM */
2422                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2423                         iwl_mvm_teardown_tdls_peers(mvm);
2424
2425                 if (sta->tdls)
2426                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2427                                                    NL80211_TDLS_ENABLE_LINK);
2428
2429                 /* enable beacon filtering */
2430                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2431                 ret = 0;
2432         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2433                    new_state == IEEE80211_STA_ASSOC) {
2434                 /* disable beacon filtering */
2435                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2436                 ret = 0;
2437         } else if (old_state == IEEE80211_STA_ASSOC &&
2438                    new_state == IEEE80211_STA_AUTH) {
2439                 if (vif->type == NL80211_IFTYPE_AP) {
2440                         mvmvif->ap_assoc_sta_count--;
2441                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2442                 }
2443                 ret = 0;
2444         } else if (old_state == IEEE80211_STA_AUTH &&
2445                    new_state == IEEE80211_STA_NONE) {
2446                 ret = 0;
2447         } else if (old_state == IEEE80211_STA_NONE &&
2448                    new_state == IEEE80211_STA_NOTEXIST) {
2449                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2450                 if (sta->tdls) {
2451                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2452                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2453                                                    NL80211_TDLS_DISABLE_LINK);
2454                 }
2455         } else {
2456                 ret = -EIO;
2457         }
2458  out_unlock:
2459         mutex_unlock(&mvm->mutex);
2460
2461         if (sta->tdls && ret == 0) {
2462                 if (old_state == IEEE80211_STA_NOTEXIST &&
2463                     new_state == IEEE80211_STA_NONE)
2464                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2465                 else if (old_state == IEEE80211_STA_NONE &&
2466                          new_state == IEEE80211_STA_NOTEXIST)
2467                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2468         }
2469
2470         return ret;
2471 }
2472
2473 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2474 {
2475         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2476
2477         mvm->rts_threshold = value;
2478
2479         return 0;
2480 }
2481
2482 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2483                                   struct ieee80211_vif *vif,
2484                                   struct ieee80211_sta *sta, u32 changed)
2485 {
2486         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2487
2488         if (vif->type == NL80211_IFTYPE_STATION &&
2489             changed & IEEE80211_RC_NSS_CHANGED)
2490                 iwl_mvm_sf_update(mvm, vif, false);
2491 }
2492
2493 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2494                                struct ieee80211_vif *vif, u16 ac,
2495                                const struct ieee80211_tx_queue_params *params)
2496 {
2497         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2498         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2499
2500         mvmvif->queue_params[ac] = *params;
2501
2502         /*
2503          * No need to update right away, we'll get BSS_CHANGED_QOS
2504          * The exception is P2P_DEVICE interface which needs immediate update.
2505          */
2506         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2507                 int ret;
2508
2509                 mutex_lock(&mvm->mutex);
2510                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2511                 mutex_unlock(&mvm->mutex);
2512                 return ret;
2513         }
2514         return 0;
2515 }
2516
2517 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2518                                       struct ieee80211_vif *vif)
2519 {
2520         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2521         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2522                            200 + vif->bss_conf.beacon_int);
2523         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2524                                100 + vif->bss_conf.beacon_int);
2525
2526         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2527                 return;
2528
2529         /*
2530          * iwl_mvm_protect_session() reads directly from the device
2531          * (the system time), so make sure it is available.
2532          */
2533         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2534                 return;
2535
2536         mutex_lock(&mvm->mutex);
2537         /* Try really hard to protect the session and hear a beacon */
2538         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2539         mutex_unlock(&mvm->mutex);
2540
2541         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2542 }
2543
2544 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2545                                         struct ieee80211_vif *vif,
2546                                         struct cfg80211_sched_scan_request *req,
2547                                         struct ieee80211_scan_ies *ies)
2548 {
2549         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2550
2551         int ret;
2552
2553         mutex_lock(&mvm->mutex);
2554
2555         if (!vif->bss_conf.idle) {
2556                 ret = -EBUSY;
2557                 goto out;
2558         }
2559
2560         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2561
2562 out:
2563         mutex_unlock(&mvm->mutex);
2564         return ret;
2565 }
2566
2567 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2568                                        struct ieee80211_vif *vif)
2569 {
2570         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2571         int ret;
2572
2573         mutex_lock(&mvm->mutex);
2574
2575         /* Due to a race condition, it's possible that mac80211 asks
2576          * us to stop a sched_scan when it's already stopped.  This
2577          * can happen, for instance, if we stopped the scan ourselves,
2578          * called ieee80211_sched_scan_stopped() and the userspace called
2579          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2580          * could run.  To handle this, simply return if the scan is
2581          * not running.
2582         */
2583         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2584                 mutex_unlock(&mvm->mutex);
2585                 return 0;
2586         }
2587
2588         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2589         mutex_unlock(&mvm->mutex);
2590         iwl_mvm_wait_for_async_handlers(mvm);
2591
2592         return ret;
2593 }
2594
2595 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2596                                enum set_key_cmd cmd,
2597                                struct ieee80211_vif *vif,
2598                                struct ieee80211_sta *sta,
2599                                struct ieee80211_key_conf *key)
2600 {
2601         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2602         struct iwl_mvm_sta *mvmsta;
2603         struct iwl_mvm_key_pn *ptk_pn;
2604         int keyidx = key->keyidx;
2605         int ret;
2606         u8 key_offset;
2607
2608         if (iwlwifi_mod_params.sw_crypto) {
2609                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2610                 return -EOPNOTSUPP;
2611         }
2612
2613         switch (key->cipher) {
2614         case WLAN_CIPHER_SUITE_TKIP:
2615                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2616                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2617                 break;
2618         case WLAN_CIPHER_SUITE_CCMP:
2619                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2620                 break;
2621         case WLAN_CIPHER_SUITE_AES_CMAC:
2622                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2623                 break;
2624         case WLAN_CIPHER_SUITE_WEP40:
2625         case WLAN_CIPHER_SUITE_WEP104:
2626                 /* For non-client mode, only use WEP keys for TX as we probably
2627                  * don't have a station yet anyway and would then have to keep
2628                  * track of the keys, linking them to each of the clients/peers
2629                  * as they appear. For now, don't do that, for performance WEP
2630                  * offload doesn't really matter much, but we need it for some
2631                  * other offload features in client mode.
2632                  */
2633                 if (vif->type != NL80211_IFTYPE_STATION)
2634                         return 0;
2635                 break;
2636         default:
2637                 /* currently FW supports only one optional cipher scheme */
2638                 if (hw->n_cipher_schemes &&
2639                     hw->cipher_schemes->cipher == key->cipher)
2640                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2641                 else
2642                         return -EOPNOTSUPP;
2643         }
2644
2645         mutex_lock(&mvm->mutex);
2646
2647         switch (cmd) {
2648         case SET_KEY:
2649                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2650                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2651                         /*
2652                          * GTK on AP interface is a TX-only key, return 0;
2653                          * on IBSS they're per-station and because we're lazy
2654                          * we don't support them for RX, so do the same.
2655                          */
2656                         ret = 0;
2657                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2658                         break;
2659                 }
2660
2661                 /* During FW restart, in order to restore the state as it was,
2662                  * don't try to reprogram keys we previously failed for.
2663                  */
2664                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2665                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2666                         IWL_DEBUG_MAC80211(mvm,
2667                                            "skip invalid idx key programming during restart\n");
2668                         ret = 0;
2669                         break;
2670                 }
2671
2672                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2673                     sta && iwl_mvm_has_new_rx_api(mvm) &&
2674                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2675                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2676                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2677                         struct ieee80211_key_seq seq;
2678                         int tid, q;
2679
2680                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2681                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2682                         ptk_pn = kzalloc(sizeof(*ptk_pn) +
2683                                          mvm->trans->num_rx_queues *
2684                                                 sizeof(ptk_pn->q[0]),
2685                                          GFP_KERNEL);
2686                         if (!ptk_pn) {
2687                                 ret = -ENOMEM;
2688                                 break;
2689                         }
2690
2691                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2692                                 ieee80211_get_key_rx_seq(key, tid, &seq);
2693                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2694                                         memcpy(ptk_pn->q[q].pn[tid],
2695                                                seq.ccmp.pn,
2696                                                IEEE80211_CCMP_PN_LEN);
2697                         }
2698
2699                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2700                 }
2701
2702                 /* in HW restart reuse the index, otherwise request a new one */
2703                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2704                         key_offset = key->hw_key_idx;
2705                 else
2706                         key_offset = STA_KEY_IDX_INVALID;
2707
2708                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2709                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2710                 if (ret) {
2711                         IWL_WARN(mvm, "set key failed\n");
2712                         /*
2713                          * can't add key for RX, but we don't need it
2714                          * in the device for TX so still return 0
2715                          */
2716                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2717                         ret = 0;
2718                 }
2719
2720                 break;
2721         case DISABLE_KEY:
2722                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2723                         ret = 0;
2724                         break;
2725                 }
2726
2727                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2728                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2729                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2730                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2731                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2732                         ptk_pn = rcu_dereference_protected(
2733                                                 mvmsta->ptk_pn[keyidx],
2734                                                 lockdep_is_held(&mvm->mutex));
2735                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2736                         if (ptk_pn)
2737                                 kfree_rcu(ptk_pn, rcu_head);
2738                 }
2739
2740                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2741                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2742                 break;
2743         default:
2744                 ret = -EINVAL;
2745         }
2746
2747         mutex_unlock(&mvm->mutex);
2748         return ret;
2749 }
2750
2751 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2752                                         struct ieee80211_vif *vif,
2753                                         struct ieee80211_key_conf *keyconf,
2754                                         struct ieee80211_sta *sta,
2755                                         u32 iv32, u16 *phase1key)
2756 {
2757         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2758
2759         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2760                 return;
2761
2762         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2763 }
2764
2765
2766 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2767                                struct iwl_rx_packet *pkt, void *data)
2768 {
2769         struct iwl_mvm *mvm =
2770                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2771         struct iwl_hs20_roc_res *resp;
2772         int resp_len = iwl_rx_packet_payload_len(pkt);
2773         struct iwl_mvm_time_event_data *te_data = data;
2774
2775         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2776                 return true;
2777
2778         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2779                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2780                 return true;
2781         }
2782
2783         resp = (void *)pkt->data;
2784
2785         IWL_DEBUG_TE(mvm,
2786                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2787                      resp->status, resp->event_unique_id);
2788
2789         te_data->uid = le32_to_cpu(resp->event_unique_id);
2790         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2791                      te_data->uid);
2792
2793         spin_lock_bh(&mvm->time_event_lock);
2794         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2795         spin_unlock_bh(&mvm->time_event_lock);
2796
2797         return true;
2798 }
2799
2800 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2801 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2802 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2803 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2804 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2805 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2806                                     struct ieee80211_channel *channel,
2807                                     struct ieee80211_vif *vif,
2808                                     int duration)
2809 {
2810         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2811         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2812         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2813         static const u16 time_event_response[] = { HOT_SPOT_CMD };
2814         struct iwl_notification_wait wait_time_event;
2815         u32 dtim_interval = vif->bss_conf.dtim_period *
2816                 vif->bss_conf.beacon_int;
2817         u32 req_dur, delay;
2818         struct iwl_hs20_roc_req aux_roc_req = {
2819                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2820                 .id_and_color =
2821                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2822                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2823                 /* Set the channel info data */
2824                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2825                         PHY_BAND_24 : PHY_BAND_5,
2826                 .channel_info.channel = channel->hw_value,
2827                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2828                 /* Set the time and duration */
2829                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2830          };
2831
2832         delay = AUX_ROC_MIN_DELAY;
2833         req_dur = MSEC_TO_TU(duration);
2834
2835         /*
2836          * If we are associated we want the delay time to be at least one
2837          * dtim interval so that the FW can wait until after the DTIM and
2838          * then start the time event, this will potentially allow us to
2839          * remain off-channel for the max duration.
2840          * Since we want to use almost a whole dtim interval we would also
2841          * like the delay to be for 2-3 dtim intervals, in case there are
2842          * other time events with higher priority.
2843          */
2844         if (vif->bss_conf.assoc) {
2845                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2846                 /* We cannot remain off-channel longer than the DTIM interval */
2847                 if (dtim_interval <= req_dur) {
2848                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2849                         if (req_dur <= AUX_ROC_MIN_DURATION)
2850                                 req_dur = dtim_interval -
2851                                         AUX_ROC_MIN_SAFETY_BUFFER;
2852                 }
2853         }
2854
2855         aux_roc_req.duration = cpu_to_le32(req_dur);
2856         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2857
2858         IWL_DEBUG_TE(mvm,
2859                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2860                      channel->hw_value, req_dur, duration, delay,
2861                      dtim_interval);
2862         /* Set the node address */
2863         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2864
2865         lockdep_assert_held(&mvm->mutex);
2866
2867         spin_lock_bh(&mvm->time_event_lock);
2868
2869         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2870                 spin_unlock_bh(&mvm->time_event_lock);
2871                 return -EIO;
2872         }
2873
2874         te_data->vif = vif;
2875         te_data->duration = duration;
2876         te_data->id = HOT_SPOT_CMD;
2877
2878         spin_unlock_bh(&mvm->time_event_lock);
2879
2880         /*
2881          * Use a notification wait, which really just processes the
2882          * command response and doesn't wait for anything, in order
2883          * to be able to process the response and get the UID inside
2884          * the RX path. Using CMD_WANT_SKB doesn't work because it
2885          * stores the buffer and then wakes up this thread, by which
2886          * time another notification (that the time event started)
2887          * might already be processed unsuccessfully.
2888          */
2889         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2890                                    time_event_response,
2891                                    ARRAY_SIZE(time_event_response),
2892                                    iwl_mvm_rx_aux_roc, te_data);
2893
2894         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2895                                    &aux_roc_req);
2896
2897         if (res) {
2898                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2899                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2900                 goto out_clear_te;
2901         }
2902
2903         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2904         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2905         /* should never fail */
2906         WARN_ON_ONCE(res);
2907
2908         if (res) {
2909  out_clear_te:
2910                 spin_lock_bh(&mvm->time_event_lock);
2911                 iwl_mvm_te_clear_data(mvm, te_data);
2912                 spin_unlock_bh(&mvm->time_event_lock);
2913         }
2914
2915         return res;
2916 }
2917
2918 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2919                        struct ieee80211_vif *vif,
2920                        struct ieee80211_channel *channel,
2921                        int duration,
2922                        enum ieee80211_roc_type type)
2923 {
2924         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2925         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2926         struct cfg80211_chan_def chandef;
2927         struct iwl_mvm_phy_ctxt *phy_ctxt;
2928         int ret, i;
2929
2930         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2931                            duration, type);
2932
2933         flush_work(&mvm->roc_done_wk);
2934
2935         mutex_lock(&mvm->mutex);
2936
2937         switch (vif->type) {
2938         case NL80211_IFTYPE_STATION:
2939                 if (fw_has_capa(&mvm->fw->ucode_capa,
2940                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2941                         /* Use aux roc framework (HS20) */
2942                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2943                                                        vif, duration);
2944                         goto out_unlock;
2945                 }
2946                 IWL_ERR(mvm, "hotspot not supported\n");
2947                 ret = -EINVAL;
2948                 goto out_unlock;
2949         case NL80211_IFTYPE_P2P_DEVICE:
2950                 /* handle below */
2951                 break;
2952         default:
2953                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2954                 ret = -EINVAL;
2955                 goto out_unlock;
2956         }
2957
2958         for (i = 0; i < NUM_PHY_CTX; i++) {
2959                 phy_ctxt = &mvm->phy_ctxts[i];
2960                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2961                         continue;
2962
2963                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2964                         /*
2965                          * Unbind the P2P_DEVICE from the current PHY context,
2966                          * and if the PHY context is not used remove it.
2967                          */
2968                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
2969                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2970                                 goto out_unlock;
2971
2972                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2973
2974                         /* Bind the P2P_DEVICE to the current PHY Context */
2975                         mvmvif->phy_ctxt = phy_ctxt;
2976
2977                         ret = iwl_mvm_binding_add_vif(mvm, vif);
2978                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2979                                 goto out_unlock;
2980
2981                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2982                         goto schedule_time_event;
2983                 }
2984         }
2985
2986         /* Need to update the PHY context only if the ROC channel changed */
2987         if (channel == mvmvif->phy_ctxt->channel)
2988                 goto schedule_time_event;
2989
2990         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2991
2992         /*
2993          * Change the PHY context configuration as it is currently referenced
2994          * only by the P2P Device MAC
2995          */
2996         if (mvmvif->phy_ctxt->ref == 1) {
2997                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2998                                                &chandef, 1, 1);
2999                 if (ret)
3000                         goto out_unlock;
3001         } else {
3002                 /*
3003                  * The PHY context is shared with other MACs. Need to remove the
3004                  * P2P Device from the binding, allocate an new PHY context and
3005                  * create a new binding
3006                  */
3007                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3008                 if (!phy_ctxt) {
3009                         ret = -ENOSPC;
3010                         goto out_unlock;
3011                 }
3012
3013                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3014                                                1, 1);
3015                 if (ret) {
3016                         IWL_ERR(mvm, "Failed to change PHY context\n");
3017                         goto out_unlock;
3018                 }
3019
3020                 /* Unbind the P2P_DEVICE from the current PHY context */
3021                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3022                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3023                         goto out_unlock;
3024
3025                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3026
3027                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3028                 mvmvif->phy_ctxt = phy_ctxt;
3029
3030                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3031                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3032                         goto out_unlock;
3033
3034                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3035         }
3036
3037 schedule_time_event:
3038         /* Schedule the time events */
3039         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3040
3041 out_unlock:
3042         mutex_unlock(&mvm->mutex);
3043         IWL_DEBUG_MAC80211(mvm, "leave\n");
3044         return ret;
3045 }
3046
3047 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3048 {
3049         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3050
3051         IWL_DEBUG_MAC80211(mvm, "enter\n");
3052
3053         mutex_lock(&mvm->mutex);
3054         iwl_mvm_stop_roc(mvm);
3055         mutex_unlock(&mvm->mutex);
3056
3057         IWL_DEBUG_MAC80211(mvm, "leave\n");
3058         return 0;
3059 }
3060
3061 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3062                                  struct ieee80211_chanctx_conf *ctx)
3063 {
3064         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3065         struct iwl_mvm_phy_ctxt *phy_ctxt;
3066         int ret;
3067
3068         lockdep_assert_held(&mvm->mutex);
3069
3070         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3071
3072         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3073         if (!phy_ctxt) {
3074                 ret = -ENOSPC;
3075                 goto out;
3076         }
3077
3078         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3079                                        ctx->rx_chains_static,
3080                                        ctx->rx_chains_dynamic);
3081         if (ret) {
3082                 IWL_ERR(mvm, "Failed to add PHY context\n");
3083                 goto out;
3084         }
3085
3086         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3087         *phy_ctxt_id = phy_ctxt->id;
3088 out:
3089         return ret;
3090 }
3091
3092 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3093                                struct ieee80211_chanctx_conf *ctx)
3094 {
3095         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3096         int ret;
3097
3098         mutex_lock(&mvm->mutex);
3099         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3100         mutex_unlock(&mvm->mutex);
3101
3102         return ret;
3103 }
3104
3105 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3106                                      struct ieee80211_chanctx_conf *ctx)
3107 {
3108         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3109         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3110
3111         lockdep_assert_held(&mvm->mutex);
3112
3113         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3114 }
3115
3116 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3117                                    struct ieee80211_chanctx_conf *ctx)
3118 {
3119         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3120
3121         mutex_lock(&mvm->mutex);
3122         __iwl_mvm_remove_chanctx(mvm, ctx);
3123         mutex_unlock(&mvm->mutex);
3124 }
3125
3126 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3127                                    struct ieee80211_chanctx_conf *ctx,
3128                                    u32 changed)
3129 {
3130         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3131         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3132         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3133
3134         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3135                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3136                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3137                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3138                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3139                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3140                       phy_ctxt->ref, changed))
3141                 return;
3142
3143         mutex_lock(&mvm->mutex);
3144         iwl_mvm_bt_coex_vif_change(mvm);
3145         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3146                                  ctx->rx_chains_static,
3147                                  ctx->rx_chains_dynamic);
3148         mutex_unlock(&mvm->mutex);
3149 }
3150
3151 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3152                                         struct ieee80211_vif *vif,
3153                                         struct ieee80211_chanctx_conf *ctx,
3154                                         bool switching_chanctx)
3155 {
3156         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3157         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3158         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3159         int ret;
3160
3161         lockdep_assert_held(&mvm->mutex);
3162
3163         mvmvif->phy_ctxt = phy_ctxt;
3164
3165         switch (vif->type) {
3166         case NL80211_IFTYPE_AP:
3167                 /* only needed if we're switching chanctx (i.e. during CSA) */
3168                 if (switching_chanctx) {
3169                         mvmvif->ap_ibss_active = true;
3170                         break;
3171                 }
3172         case NL80211_IFTYPE_ADHOC:
3173                 /*
3174                  * The AP binding flow is handled as part of the start_ap flow
3175                  * (in bss_info_changed), similarly for IBSS.
3176                  */
3177                 ret = 0;
3178                 goto out;
3179         case NL80211_IFTYPE_STATION:
3180                 break;
3181         case NL80211_IFTYPE_MONITOR:
3182                 /* always disable PS when a monitor interface is active */
3183                 mvmvif->ps_disabled = true;
3184                 break;
3185         default:
3186                 ret = -EINVAL;
3187                 goto out;
3188         }
3189
3190         ret = iwl_mvm_binding_add_vif(mvm, vif);
3191         if (ret)
3192                 goto out;
3193
3194         /*
3195          * Power state must be updated before quotas,
3196          * otherwise fw will complain.
3197          */
3198         iwl_mvm_power_update_mac(mvm);
3199
3200         /* Setting the quota at this stage is only required for monitor
3201          * interfaces. For the other types, the bss_info changed flow
3202          * will handle quota settings.
3203          */
3204         if (vif->type == NL80211_IFTYPE_MONITOR) {
3205                 mvmvif->monitor_active = true;
3206                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3207                 if (ret)
3208                         goto out_remove_binding;
3209
3210                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3211                 if (ret)
3212                         goto out_remove_binding;
3213
3214         }
3215
3216         /* Handle binding during CSA */
3217         if (vif->type == NL80211_IFTYPE_AP) {
3218                 iwl_mvm_update_quotas(mvm, false, NULL);
3219                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3220         }
3221
3222         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3223                 u32 duration = 2 * vif->bss_conf.beacon_int;
3224
3225                 /* iwl_mvm_protect_session() reads directly from the
3226                  * device (the system time), so make sure it is
3227                  * available.
3228                  */
3229                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3230                 if (ret)
3231                         goto out_remove_binding;
3232
3233                 /* Protect the session to make sure we hear the first
3234                  * beacon on the new channel.
3235                  */
3236                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3237                                         vif->bss_conf.beacon_int / 2,
3238                                         true);
3239
3240                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3241
3242                 iwl_mvm_update_quotas(mvm, false, NULL);
3243         }
3244
3245         goto out;
3246
3247 out_remove_binding:
3248         iwl_mvm_binding_remove_vif(mvm, vif);
3249         iwl_mvm_power_update_mac(mvm);
3250 out:
3251         if (ret)
3252                 mvmvif->phy_ctxt = NULL;
3253         return ret;
3254 }
3255 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3256                                       struct ieee80211_vif *vif,
3257                                       struct ieee80211_chanctx_conf *ctx)
3258 {
3259         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3260         int ret;
3261
3262         mutex_lock(&mvm->mutex);
3263         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3264         mutex_unlock(&mvm->mutex);
3265
3266         return ret;
3267 }
3268
3269 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3270                                            struct ieee80211_vif *vif,
3271                                            struct ieee80211_chanctx_conf *ctx,
3272                                            bool switching_chanctx)
3273 {
3274         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3275         struct ieee80211_vif *disabled_vif = NULL;
3276
3277         lockdep_assert_held(&mvm->mutex);
3278
3279         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3280
3281         switch (vif->type) {
3282         case NL80211_IFTYPE_ADHOC:
3283                 goto out;
3284         case NL80211_IFTYPE_MONITOR:
3285                 mvmvif->monitor_active = false;
3286                 mvmvif->ps_disabled = false;
3287                 iwl_mvm_rm_snif_sta(mvm, vif);
3288                 break;
3289         case NL80211_IFTYPE_AP:
3290                 /* This part is triggered only during CSA */
3291                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3292                         goto out;
3293
3294                 mvmvif->csa_countdown = false;
3295
3296                 /* Set CS bit on all the stations */
3297                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3298
3299                 /* Save blocked iface, the timeout is set on the next beacon */
3300                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3301
3302                 mvmvif->ap_ibss_active = false;
3303                 break;
3304         case NL80211_IFTYPE_STATION:
3305                 if (!switching_chanctx)
3306                         break;
3307
3308                 disabled_vif = vif;
3309
3310                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3311                 break;
3312         default:
3313                 break;
3314         }
3315
3316         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3317         iwl_mvm_binding_remove_vif(mvm, vif);
3318
3319 out:
3320         mvmvif->phy_ctxt = NULL;
3321         iwl_mvm_power_update_mac(mvm);
3322 }
3323
3324 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3325                                          struct ieee80211_vif *vif,
3326                                          struct ieee80211_chanctx_conf *ctx)
3327 {
3328         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3329
3330         mutex_lock(&mvm->mutex);
3331         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3332         mutex_unlock(&mvm->mutex);
3333 }
3334
3335 static int
3336 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3337                                 struct ieee80211_vif_chanctx_switch *vifs)
3338 {
3339         int ret;
3340
3341         mutex_lock(&mvm->mutex);
3342         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3343         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3344
3345         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3346         if (ret) {
3347                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3348                 goto out_reassign;
3349         }
3350
3351         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3352                                            true);
3353         if (ret) {
3354                 IWL_ERR(mvm,
3355                         "failed to assign new_ctx during channel switch\n");
3356                 goto out_remove;
3357         }
3358
3359         /* we don't support TDLS during DCM - can be caused by channel switch */
3360         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3361                 iwl_mvm_teardown_tdls_peers(mvm);
3362
3363         goto out;
3364
3365 out_remove:
3366         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3367
3368 out_reassign:
3369         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3370                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3371                 goto out_restart;
3372         }
3373
3374         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3375                                          true)) {
3376                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3377                 goto out_restart;
3378         }
3379
3380         goto out;
3381
3382 out_restart:
3383         /* things keep failing, better restart the hw */
3384         iwl_mvm_nic_restart(mvm, false);
3385
3386 out:
3387         mutex_unlock(&mvm->mutex);
3388
3389         return ret;
3390 }
3391
3392 static int
3393 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3394                                     struct ieee80211_vif_chanctx_switch *vifs)
3395 {
3396         int ret;
3397
3398         mutex_lock(&mvm->mutex);
3399         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3400
3401         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3402                                            true);
3403         if (ret) {
3404                 IWL_ERR(mvm,
3405                         "failed to assign new_ctx during channel switch\n");
3406                 goto out_reassign;
3407         }
3408
3409         goto out;
3410
3411 out_reassign:
3412         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3413                                          true)) {
3414                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3415                 goto out_restart;
3416         }
3417
3418         goto out;
3419
3420 out_restart:
3421         /* things keep failing, better restart the hw */
3422         iwl_mvm_nic_restart(mvm, false);
3423
3424 out:
3425         mutex_unlock(&mvm->mutex);
3426
3427         return ret;
3428 }
3429
3430 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3431                                       struct ieee80211_vif_chanctx_switch *vifs,
3432                                       int n_vifs,
3433                                       enum ieee80211_chanctx_switch_mode mode)
3434 {
3435         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3436         int ret;
3437
3438         /* we only support a single-vif right now */
3439         if (n_vifs > 1)
3440                 return -EOPNOTSUPP;
3441
3442         switch (mode) {
3443         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3444                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3445                 break;
3446         case CHANCTX_SWMODE_REASSIGN_VIF:
3447                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3448                 break;
3449         default:
3450                 ret = -EOPNOTSUPP;
3451                 break;
3452         }
3453
3454         return ret;
3455 }
3456
3457 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3458                            struct ieee80211_sta *sta,
3459                            bool set)
3460 {
3461         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3462         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3463
3464         if (!mvm_sta || !mvm_sta->vif) {
3465                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3466                 return -EINVAL;
3467         }
3468
3469         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3470 }
3471
3472 #ifdef CONFIG_NL80211_TESTMODE
3473 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3474         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3475         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3476         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3477 };
3478
3479 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3480                                       struct ieee80211_vif *vif,
3481                                       void *data, int len)
3482 {
3483         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3484         int err;
3485         u32 noa_duration;
3486
3487         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3488         if (err)
3489                 return err;
3490
3491         if (!tb[IWL_MVM_TM_ATTR_CMD])
3492                 return -EINVAL;
3493
3494         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3495         case IWL_MVM_TM_CMD_SET_NOA:
3496                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3497                     !vif->bss_conf.enable_beacon ||
3498                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3499                         return -EINVAL;
3500
3501                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3502                 if (noa_duration >= vif->bss_conf.beacon_int)
3503                         return -EINVAL;
3504
3505                 mvm->noa_duration = noa_duration;
3506                 mvm->noa_vif = vif;
3507
3508                 return iwl_mvm_update_quotas(mvm, false, NULL);
3509         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3510                 /* must be associated client vif - ignore authorized */
3511                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3512                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3513                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3514                         return -EINVAL;
3515
3516                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3517                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3518                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3519         }
3520
3521         return -EOPNOTSUPP;
3522 }
3523
3524 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3525                                     struct ieee80211_vif *vif,
3526                                     void *data, int len)
3527 {
3528         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3529         int err;
3530
3531         mutex_lock(&mvm->mutex);
3532         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3533         mutex_unlock(&mvm->mutex);
3534
3535         return err;
3536 }
3537 #endif
3538
3539 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3540                                    struct ieee80211_vif *vif,
3541                                    struct ieee80211_channel_switch *chsw)
3542 {
3543         /* By implementing this operation, we prevent mac80211 from
3544          * starting its own channel switch timer, so that we can call
3545          * ieee80211_chswitch_done() ourselves at the right time
3546          * (which is when the absence time event starts).
3547          */
3548
3549         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3550                            "dummy channel switch op\n");
3551 }
3552
3553 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3554                                       struct ieee80211_vif *vif,
3555                                       struct ieee80211_channel_switch *chsw)
3556 {
3557         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3558         struct ieee80211_vif *csa_vif;
3559         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3560         u32 apply_time;
3561         int ret;
3562
3563         mutex_lock(&mvm->mutex);
3564
3565         mvmvif->csa_failed = false;
3566
3567         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3568                            chsw->chandef.center_freq1);
3569
3570         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3571
3572         switch (vif->type) {
3573         case NL80211_IFTYPE_AP:
3574                 csa_vif =
3575                         rcu_dereference_protected(mvm->csa_vif,
3576                                                   lockdep_is_held(&mvm->mutex));
3577                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3578                               "Another CSA is already in progress")) {
3579                         ret = -EBUSY;
3580                         goto out_unlock;
3581                 }
3582
3583                 rcu_assign_pointer(mvm->csa_vif, vif);
3584
3585                 if (WARN_ONCE(mvmvif->csa_countdown,
3586                               "Previous CSA countdown didn't complete")) {
3587                         ret = -EBUSY;
3588                         goto out_unlock;
3589                 }
3590
3591                 break;
3592         case NL80211_IFTYPE_STATION:
3593                 /* Schedule the time event to a bit before beacon 1,
3594                  * to make sure we're in the new channel when the
3595                  * GO/AP arrives.
3596                  */
3597                 apply_time = chsw->device_timestamp +
3598                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3599                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3600
3601                 if (chsw->block_tx)
3602                         iwl_mvm_csa_client_absent(mvm, vif);
3603
3604                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3605                                             apply_time);
3606                 if (mvmvif->bf_data.bf_enabled) {
3607                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3608                         if (ret)
3609                                 goto out_unlock;
3610                 }
3611
3612                 break;
3613         default:
3614                 break;
3615         }
3616
3617         mvmvif->ps_disabled = true;
3618
3619         ret = iwl_mvm_power_update_ps(mvm);
3620         if (ret)
3621                 goto out_unlock;
3622
3623         /* we won't be on this channel any longer */
3624         iwl_mvm_teardown_tdls_peers(mvm);
3625
3626 out_unlock:
3627         mutex_unlock(&mvm->mutex);
3628
3629         return ret;
3630 }
3631
3632 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3633                                        struct ieee80211_vif *vif)
3634 {
3635         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3636         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3637         int ret;
3638
3639         mutex_lock(&mvm->mutex);
3640
3641         if (mvmvif->csa_failed) {
3642                 mvmvif->csa_failed = false;
3643                 ret = -EIO;
3644                 goto out_unlock;
3645         }
3646
3647         if (vif->type == NL80211_IFTYPE_STATION) {
3648                 struct iwl_mvm_sta *mvmsta;
3649
3650                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3651                                                           mvmvif->ap_sta_id);
3652
3653                 if (WARN_ON(!mvmsta)) {
3654                         ret = -EIO;
3655                         goto out_unlock;
3656                 }
3657
3658                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3659
3660                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3661
3662                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3663                 if (ret)
3664                         goto out_unlock;
3665
3666                 iwl_mvm_stop_session_protection(mvm, vif);
3667         }
3668
3669         mvmvif->ps_disabled = false;
3670
3671         ret = iwl_mvm_power_update_ps(mvm);
3672
3673 out_unlock:
3674         mutex_unlock(&mvm->mutex);
3675
3676         return ret;
3677 }
3678
3679 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3680                               struct ieee80211_vif *vif, u32 queues, bool drop)
3681 {
3682         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3683         struct iwl_mvm_vif *mvmvif;
3684         struct iwl_mvm_sta *mvmsta;
3685         struct ieee80211_sta *sta;
3686         int i;
3687         u32 msk = 0;
3688
3689         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3690                 return;
3691
3692         mutex_lock(&mvm->mutex);
3693         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3694
3695         /* flush the AP-station and all TDLS peers */
3696         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3697                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3698                                                 lockdep_is_held(&mvm->mutex));
3699                 if (IS_ERR_OR_NULL(sta))
3700                         continue;
3701
3702                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3703                 if (mvmsta->vif != vif)
3704                         continue;
3705
3706                 /* make sure only TDLS peers or the AP are flushed */
3707                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3708
3709                 msk |= mvmsta->tfd_queue_msk;
3710         }
3711
3712         if (drop) {
3713                 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3714                         IWL_ERR(mvm, "flush request fail\n");
3715                 mutex_unlock(&mvm->mutex);
3716         } else {
3717                 mutex_unlock(&mvm->mutex);
3718
3719                 /* this can take a while, and we may need/want other operations
3720                  * to succeed while doing this, so do it without the mutex held
3721                  */
3722                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3723         }
3724 }
3725
3726 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3727                                   struct survey_info *survey)
3728 {
3729         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3730         int ret;
3731
3732         memset(survey, 0, sizeof(*survey));
3733
3734         /* only support global statistics right now */
3735         if (idx != 0)
3736                 return -ENOENT;
3737
3738         if (fw_has_capa(&mvm->fw->ucode_capa,
3739                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3740                 return -ENOENT;
3741
3742         mutex_lock(&mvm->mutex);
3743
3744         if (mvm->ucode_loaded) {
3745                 ret = iwl_mvm_request_statistics(mvm, false);
3746                 if (ret)
3747                         goto out;
3748         }
3749
3750         survey->filled = SURVEY_INFO_TIME |
3751                          SURVEY_INFO_TIME_RX |
3752                          SURVEY_INFO_TIME_TX |
3753                          SURVEY_INFO_TIME_SCAN;
3754         survey->time = mvm->accu_radio_stats.on_time_rf +
3755                        mvm->radio_stats.on_time_rf;
3756         do_div(survey->time, USEC_PER_MSEC);
3757
3758         survey->time_rx = mvm->accu_radio_stats.rx_time +
3759                           mvm->radio_stats.rx_time;
3760         do_div(survey->time_rx, USEC_PER_MSEC);
3761
3762         survey->time_tx = mvm->accu_radio_stats.tx_time +
3763                           mvm->radio_stats.tx_time;
3764         do_div(survey->time_tx, USEC_PER_MSEC);
3765
3766         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3767                             mvm->radio_stats.on_time_scan;
3768         do_div(survey->time_scan, USEC_PER_MSEC);
3769
3770         ret = 0;
3771  out:
3772         mutex_unlock(&mvm->mutex);
3773         return ret;
3774 }
3775
3776 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3777                                        struct ieee80211_vif *vif,
3778                                        struct ieee80211_sta *sta,
3779                                        struct station_info *sinfo)
3780 {
3781         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3782         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3783         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3784
3785         if (fw_has_capa(&mvm->fw->ucode_capa,
3786                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3787                 return;
3788
3789         /* if beacon filtering isn't on mac80211 does it anyway */
3790         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3791                 return;
3792
3793         if (!vif->bss_conf.assoc)
3794                 return;
3795
3796         mutex_lock(&mvm->mutex);
3797
3798         if (mvmvif->ap_sta_id != mvmsta->sta_id)
3799                 goto unlock;
3800
3801         if (iwl_mvm_request_statistics(mvm, false))
3802                 goto unlock;
3803
3804         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3805                            mvmvif->beacon_stats.accu_num_beacons;
3806         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3807         if (mvmvif->beacon_stats.avg_signal) {
3808                 /* firmware only reports a value after RXing a few beacons */
3809                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3810                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3811         }
3812  unlock:
3813         mutex_unlock(&mvm->mutex);
3814 }
3815
3816 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3817                                         struct ieee80211_vif *vif,
3818                                         const struct ieee80211_event *event)
3819 {
3820 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
3821         do {                                                    \
3822                 if ((_cnt) && --(_cnt))                         \
3823                         break;                                  \
3824                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3825         } while (0)
3826
3827         struct iwl_fw_dbg_trigger_tlv *trig;
3828         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3829
3830         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3831                 return;
3832
3833         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3834         trig_mlme = (void *)trig->data;
3835         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3836                 return;
3837
3838         if (event->u.mlme.data == ASSOC_EVENT) {
3839                 if (event->u.mlme.status == MLME_DENIED)
3840                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3841                                            trig_mlme->stop_assoc_denied,
3842                                            "DENIED ASSOC: reason %d",
3843                                             event->u.mlme.reason);
3844                 else if (event->u.mlme.status == MLME_TIMEOUT)
3845                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3846                                            trig_mlme->stop_assoc_timeout,
3847                                            "ASSOC TIMEOUT");
3848         } else if (event->u.mlme.data == AUTH_EVENT) {
3849                 if (event->u.mlme.status == MLME_DENIED)
3850                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3851                                            trig_mlme->stop_auth_denied,
3852                                            "DENIED AUTH: reason %d",
3853                                            event->u.mlme.reason);
3854                 else if (event->u.mlme.status == MLME_TIMEOUT)
3855                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3856                                            trig_mlme->stop_auth_timeout,
3857                                            "AUTH TIMEOUT");
3858         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3859                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3860                                    trig_mlme->stop_rx_deauth,
3861                                    "DEAUTH RX %d", event->u.mlme.reason);
3862         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3863                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3864                                    trig_mlme->stop_tx_deauth,
3865                                    "DEAUTH TX %d", event->u.mlme.reason);
3866         }
3867 #undef CHECK_MLME_TRIGGER
3868 }
3869
3870 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3871                                           struct ieee80211_vif *vif,
3872                                           const struct ieee80211_event *event)
3873 {
3874         struct iwl_fw_dbg_trigger_tlv *trig;
3875         struct iwl_fw_dbg_trigger_ba *ba_trig;
3876
3877         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3878                 return;
3879
3880         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3881         ba_trig = (void *)trig->data;
3882         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3883                 return;
3884
3885         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3886                 return;
3887
3888         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3889                                     "BAR received from %pM, tid %d, ssn %d",
3890                                     event->u.ba.sta->addr, event->u.ba.tid,
3891                                     event->u.ba.ssn);
3892 }
3893
3894 static void
3895 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3896                                      struct ieee80211_vif *vif,
3897                                      const struct ieee80211_event *event)
3898 {
3899         struct iwl_fw_dbg_trigger_tlv *trig;
3900         struct iwl_fw_dbg_trigger_ba *ba_trig;
3901
3902         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3903                 return;
3904
3905         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3906         ba_trig = (void *)trig->data;
3907         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3908                 return;
3909
3910         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3911                 return;
3912
3913         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3914                                     "Frame from %pM timed out, tid %d",
3915                                     event->u.ba.sta->addr, event->u.ba.tid);
3916 }
3917
3918 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3919                                        struct ieee80211_vif *vif,
3920                                        const struct ieee80211_event *event)
3921 {
3922         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3923
3924         switch (event->type) {
3925         case MLME_EVENT:
3926                 iwl_mvm_event_mlme_callback(mvm, vif, event);
3927                 break;
3928         case BAR_RX_EVENT:
3929                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3930                 break;
3931         case BA_FRAME_TIMEOUT:
3932                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3933                 break;
3934         default:
3935                 break;
3936         }
3937 }
3938
3939 const struct ieee80211_ops iwl_mvm_hw_ops = {
3940         .tx = iwl_mvm_mac_tx,
3941         .ampdu_action = iwl_mvm_mac_ampdu_action,
3942         .start = iwl_mvm_mac_start,
3943         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3944         .stop = iwl_mvm_mac_stop,
3945         .add_interface = iwl_mvm_mac_add_interface,
3946         .remove_interface = iwl_mvm_mac_remove_interface,
3947         .config = iwl_mvm_mac_config,
3948         .prepare_multicast = iwl_mvm_prepare_multicast,
3949         .configure_filter = iwl_mvm_configure_filter,
3950         .config_iface_filter = iwl_mvm_config_iface_filter,
3951         .bss_info_changed = iwl_mvm_bss_info_changed,
3952         .hw_scan = iwl_mvm_mac_hw_scan,
3953         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3954         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3955         .sta_state = iwl_mvm_mac_sta_state,
3956         .sta_notify = iwl_mvm_mac_sta_notify,
3957         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3958         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3959         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3960         .sta_rc_update = iwl_mvm_sta_rc_update,
3961         .conf_tx = iwl_mvm_mac_conf_tx,
3962         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3963         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3964         .flush = iwl_mvm_mac_flush,
3965         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3966         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3967         .set_key = iwl_mvm_mac_set_key,
3968         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3969         .remain_on_channel = iwl_mvm_roc,
3970         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3971         .add_chanctx = iwl_mvm_add_chanctx,
3972         .remove_chanctx = iwl_mvm_remove_chanctx,
3973         .change_chanctx = iwl_mvm_change_chanctx,
3974         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3975         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3976         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3977
3978         .start_ap = iwl_mvm_start_ap_ibss,
3979         .stop_ap = iwl_mvm_stop_ap_ibss,
3980         .join_ibss = iwl_mvm_start_ap_ibss,
3981         .leave_ibss = iwl_mvm_stop_ap_ibss,
3982
3983         .set_tim = iwl_mvm_set_tim,
3984
3985         .channel_switch = iwl_mvm_channel_switch,
3986         .pre_channel_switch = iwl_mvm_pre_channel_switch,
3987         .post_channel_switch = iwl_mvm_post_channel_switch,
3988
3989         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3990         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3991         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3992
3993         .event_callback = iwl_mvm_mac_event_callback,
3994
3995         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3996
3997 #ifdef CONFIG_PM_SLEEP
3998         /* look at d3.c */
3999         .suspend = iwl_mvm_suspend,
4000         .resume = iwl_mvm_resume,
4001         .set_wakeup = iwl_mvm_set_wakeup,
4002         .set_rekey_data = iwl_mvm_set_rekey_data,
4003 #if IS_ENABLED(CONFIG_IPV6)
4004         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4005 #endif
4006         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4007 #endif
4008         .get_survey = iwl_mvm_mac_get_survey,
4009         .sta_statistics = iwl_mvm_mac_sta_statistics,
4010 };