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[deliverable/linux.git] / drivers / net / wireless / intel / iwlwifi / mvm / mac80211.c
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);
891 break;
892 case IEEE80211_AMPDU_RX_STOP:
893 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
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 void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1766 struct ieee80211_vif *vif,
1767 struct ieee80211_bss_conf *bss_conf,
1768 u32 changes)
1769 {
1770 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1771 int ret;
1772
1773 /*
1774 * Re-calculate the tsf id, as the master-slave relations depend on the
1775 * beacon interval, which was not known when the station interface was
1776 * added.
1777 */
1778 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1779 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1780
1781 /*
1782 * If we're not associated yet, take the (new) BSSID before associating
1783 * so the firmware knows. If we're already associated, then use the old
1784 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1785 * branch for disassociation below.
1786 */
1787 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1788 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1789
1790 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1791 if (ret)
1792 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1793
1794 /* after sending it once, adopt mac80211 data */
1795 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1796 mvmvif->associated = bss_conf->assoc;
1797
1798 if (changes & BSS_CHANGED_ASSOC) {
1799 if (bss_conf->assoc) {
1800 /* clear statistics to get clean beacon counter */
1801 iwl_mvm_request_statistics(mvm, true);
1802 memset(&mvmvif->beacon_stats, 0,
1803 sizeof(mvmvif->beacon_stats));
1804
1805 /* add quota for this interface */
1806 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1807 if (ret) {
1808 IWL_ERR(mvm, "failed to update quotas\n");
1809 return;
1810 }
1811
1812 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1813 &mvm->status)) {
1814 /*
1815 * If we're restarting then the firmware will
1816 * obviously have lost synchronisation with
1817 * the AP. It will attempt to synchronise by
1818 * itself, but we can make it more reliable by
1819 * scheduling a session protection time event.
1820 *
1821 * The firmware needs to receive a beacon to
1822 * catch up with synchronisation, use 110% of
1823 * the beacon interval.
1824 *
1825 * Set a large maximum delay to allow for more
1826 * than a single interface.
1827 */
1828 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1829 iwl_mvm_protect_session(mvm, vif, dur, dur,
1830 5 * dur, false);
1831 }
1832
1833 iwl_mvm_sf_update(mvm, vif, false);
1834 iwl_mvm_power_vif_assoc(mvm, vif);
1835 if (vif->p2p) {
1836 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1837 iwl_mvm_update_smps(mvm, vif,
1838 IWL_MVM_SMPS_REQ_PROT,
1839 IEEE80211_SMPS_DYNAMIC);
1840 }
1841 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1842 /*
1843 * If update fails - SF might be running in associated
1844 * mode while disassociated - which is forbidden.
1845 */
1846 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1847 "Failed to update SF upon disassociation\n");
1848
1849 /* remove AP station now that the MAC is unassoc */
1850 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1851 if (ret)
1852 IWL_ERR(mvm, "failed to remove AP station\n");
1853
1854 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1855 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1856 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1857 /* remove quota for this interface */
1858 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1859 if (ret)
1860 IWL_ERR(mvm, "failed to update quotas\n");
1861
1862 if (vif->p2p)
1863 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1864
1865 /* this will take the cleared BSSID from bss_conf */
1866 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1867 if (ret)
1868 IWL_ERR(mvm,
1869 "failed to update MAC %pM (clear after unassoc)\n",
1870 vif->addr);
1871 }
1872
1873 iwl_mvm_recalc_multicast(mvm);
1874 iwl_mvm_configure_bcast_filter(mvm);
1875
1876 /* reset rssi values */
1877 mvmvif->bf_data.ave_beacon_signal = 0;
1878
1879 iwl_mvm_bt_coex_vif_change(mvm);
1880 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1881 IEEE80211_SMPS_AUTOMATIC);
1882 if (fw_has_capa(&mvm->fw->ucode_capa,
1883 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1884 iwl_mvm_config_scan(mvm);
1885 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1886 /*
1887 * We received a beacon _after_ association so
1888 * remove the session protection.
1889 */
1890 iwl_mvm_remove_time_event(mvm, mvmvif,
1891 &mvmvif->time_event_data);
1892 }
1893
1894 if (changes & BSS_CHANGED_BEACON_INFO) {
1895 iwl_mvm_sf_update(mvm, vif, false);
1896 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1897 }
1898
1899 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1900 ret = iwl_mvm_power_update_mac(mvm);
1901 if (ret)
1902 IWL_ERR(mvm, "failed to update power mode\n");
1903 }
1904
1905 if (changes & BSS_CHANGED_TXPOWER) {
1906 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1907 bss_conf->txpower);
1908 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1909 }
1910
1911 if (changes & BSS_CHANGED_CQM) {
1912 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1913 /* reset cqm events tracking */
1914 mvmvif->bf_data.last_cqm_event = 0;
1915 if (mvmvif->bf_data.bf_enabled) {
1916 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1917 if (ret)
1918 IWL_ERR(mvm,
1919 "failed to update CQM thresholds\n");
1920 }
1921 }
1922
1923 if (changes & BSS_CHANGED_ARP_FILTER) {
1924 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1925 iwl_mvm_configure_bcast_filter(mvm);
1926 }
1927 }
1928
1929 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1930 struct ieee80211_vif *vif)
1931 {
1932 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1933 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1934 int ret;
1935
1936 /*
1937 * iwl_mvm_mac_ctxt_add() might read directly from the device
1938 * (the system time), so make sure it is available.
1939 */
1940 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1941 if (ret)
1942 return ret;
1943
1944 mutex_lock(&mvm->mutex);
1945
1946 /* Send the beacon template */
1947 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1948 if (ret)
1949 goto out_unlock;
1950
1951 /*
1952 * Re-calculate the tsf id, as the master-slave relations depend on the
1953 * beacon interval, which was not known when the AP interface was added.
1954 */
1955 if (vif->type == NL80211_IFTYPE_AP)
1956 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1957
1958 mvmvif->ap_assoc_sta_count = 0;
1959
1960 /* Add the mac context */
1961 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1962 if (ret)
1963 goto out_unlock;
1964
1965 /* Perform the binding */
1966 ret = iwl_mvm_binding_add_vif(mvm, vif);
1967 if (ret)
1968 goto out_remove;
1969
1970 /* Send the bcast station. At this stage the TBTT and DTIM time events
1971 * are added and applied to the scheduler */
1972 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1973 if (ret)
1974 goto out_unbind;
1975
1976 /* must be set before quota calculations */
1977 mvmvif->ap_ibss_active = true;
1978
1979 /* power updated needs to be done before quotas */
1980 iwl_mvm_power_update_mac(mvm);
1981
1982 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1983 if (ret)
1984 goto out_quota_failed;
1985
1986 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1987 if (vif->p2p && mvm->p2p_device_vif)
1988 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1989
1990 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1991
1992 iwl_mvm_bt_coex_vif_change(mvm);
1993
1994 /* we don't support TDLS during DCM */
1995 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1996 iwl_mvm_teardown_tdls_peers(mvm);
1997
1998 goto out_unlock;
1999
2000 out_quota_failed:
2001 iwl_mvm_power_update_mac(mvm);
2002 mvmvif->ap_ibss_active = false;
2003 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2004 out_unbind:
2005 iwl_mvm_binding_remove_vif(mvm, vif);
2006 out_remove:
2007 iwl_mvm_mac_ctxt_remove(mvm, vif);
2008 out_unlock:
2009 mutex_unlock(&mvm->mutex);
2010 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2011 return ret;
2012 }
2013
2014 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2015 struct ieee80211_vif *vif)
2016 {
2017 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2018 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2019
2020 iwl_mvm_prepare_mac_removal(mvm, vif);
2021
2022 mutex_lock(&mvm->mutex);
2023
2024 /* Handle AP stop while in CSA */
2025 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2026 iwl_mvm_remove_time_event(mvm, mvmvif,
2027 &mvmvif->time_event_data);
2028 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2029 mvmvif->csa_countdown = false;
2030 }
2031
2032 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2033 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2034 mvm->csa_tx_block_bcn_timeout = 0;
2035 }
2036
2037 mvmvif->ap_ibss_active = false;
2038 mvm->ap_last_beacon_gp2 = 0;
2039
2040 iwl_mvm_bt_coex_vif_change(mvm);
2041
2042 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2043
2044 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2045 if (vif->p2p && mvm->p2p_device_vif)
2046 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2047
2048 iwl_mvm_update_quotas(mvm, false, NULL);
2049 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2050 iwl_mvm_binding_remove_vif(mvm, vif);
2051
2052 iwl_mvm_power_update_mac(mvm);
2053
2054 iwl_mvm_mac_ctxt_remove(mvm, vif);
2055
2056 mutex_unlock(&mvm->mutex);
2057 }
2058
2059 static void
2060 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2061 struct ieee80211_vif *vif,
2062 struct ieee80211_bss_conf *bss_conf,
2063 u32 changes)
2064 {
2065 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2066
2067 /* Changes will be applied when the AP/IBSS is started */
2068 if (!mvmvif->ap_ibss_active)
2069 return;
2070
2071 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2072 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2073 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2074 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2075
2076 /* Need to send a new beacon template to the FW */
2077 if (changes & BSS_CHANGED_BEACON &&
2078 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2079 IWL_WARN(mvm, "Failed updating beacon data\n");
2080
2081 if (changes & BSS_CHANGED_TXPOWER) {
2082 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2083 bss_conf->txpower);
2084 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2085 }
2086
2087 }
2088
2089 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2090 struct ieee80211_vif *vif,
2091 struct ieee80211_bss_conf *bss_conf,
2092 u32 changes)
2093 {
2094 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2095
2096 /*
2097 * iwl_mvm_bss_info_changed_station() might call
2098 * iwl_mvm_protect_session(), which reads directly from
2099 * the device (the system time), so make sure it is available.
2100 */
2101 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2102 return;
2103
2104 mutex_lock(&mvm->mutex);
2105
2106 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2107 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2108
2109 switch (vif->type) {
2110 case NL80211_IFTYPE_STATION:
2111 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2112 break;
2113 case NL80211_IFTYPE_AP:
2114 case NL80211_IFTYPE_ADHOC:
2115 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2116 break;
2117 default:
2118 /* shouldn't happen */
2119 WARN_ON_ONCE(1);
2120 }
2121
2122 mutex_unlock(&mvm->mutex);
2123 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2124 }
2125
2126 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2127 struct ieee80211_vif *vif,
2128 struct ieee80211_scan_request *hw_req)
2129 {
2130 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2131 int ret;
2132
2133 if (hw_req->req.n_channels == 0 ||
2134 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2135 return -EINVAL;
2136
2137 mutex_lock(&mvm->mutex);
2138 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2139 mutex_unlock(&mvm->mutex);
2140
2141 return ret;
2142 }
2143
2144 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2145 struct ieee80211_vif *vif)
2146 {
2147 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2148
2149 mutex_lock(&mvm->mutex);
2150
2151 /* Due to a race condition, it's possible that mac80211 asks
2152 * us to stop a hw_scan when it's already stopped. This can
2153 * happen, for instance, if we stopped the scan ourselves,
2154 * called ieee80211_scan_completed() and the userspace called
2155 * cancel scan scan before ieee80211_scan_work() could run.
2156 * To handle that, simply return if the scan is not running.
2157 */
2158 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2159 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2160
2161 mutex_unlock(&mvm->mutex);
2162 }
2163
2164 static void
2165 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2166 struct ieee80211_sta *sta, u16 tids,
2167 int num_frames,
2168 enum ieee80211_frame_release_type reason,
2169 bool more_data)
2170 {
2171 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2172
2173 /* Called when we need to transmit (a) frame(s) from mac80211 */
2174
2175 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2176 tids, more_data, false);
2177 }
2178
2179 static void
2180 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2181 struct ieee80211_sta *sta, u16 tids,
2182 int num_frames,
2183 enum ieee80211_frame_release_type reason,
2184 bool more_data)
2185 {
2186 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2187
2188 /* Called when we need to transmit (a) frame(s) from agg queue */
2189
2190 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2191 tids, more_data, true);
2192 }
2193
2194 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2195 struct ieee80211_vif *vif,
2196 enum sta_notify_cmd cmd,
2197 struct ieee80211_sta *sta)
2198 {
2199 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2200 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2201 unsigned long txqs = 0, tids = 0;
2202 int tid;
2203
2204 spin_lock_bh(&mvmsta->lock);
2205 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2206 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2207
2208 if (tid_data->state != IWL_AGG_ON &&
2209 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2210 continue;
2211
2212 __set_bit(tid_data->txq_id, &txqs);
2213
2214 if (iwl_mvm_tid_queued(tid_data) == 0)
2215 continue;
2216
2217 __set_bit(tid, &tids);
2218 }
2219
2220 switch (cmd) {
2221 case STA_NOTIFY_SLEEP:
2222 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2223 ieee80211_sta_block_awake(hw, sta, true);
2224
2225 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2226 ieee80211_sta_set_buffered(sta, tid, true);
2227
2228 if (txqs)
2229 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2230 /*
2231 * The fw updates the STA to be asleep. Tx packets on the Tx
2232 * queues to this station will not be transmitted. The fw will
2233 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2234 */
2235 break;
2236 case STA_NOTIFY_AWAKE:
2237 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2238 break;
2239
2240 if (txqs)
2241 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2242 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2243 break;
2244 default:
2245 break;
2246 }
2247 spin_unlock_bh(&mvmsta->lock);
2248 }
2249
2250 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2251 struct ieee80211_vif *vif,
2252 struct ieee80211_sta *sta)
2253 {
2254 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2255 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2256
2257 /*
2258 * This is called before mac80211 does RCU synchronisation,
2259 * so here we already invalidate our internal RCU-protected
2260 * station pointer. The rest of the code will thus no longer
2261 * be able to find the station this way, and we don't rely
2262 * on further RCU synchronisation after the sta_state()
2263 * callback deleted the station.
2264 */
2265 mutex_lock(&mvm->mutex);
2266 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2267 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2268 ERR_PTR(-ENOENT));
2269
2270 mutex_unlock(&mvm->mutex);
2271 }
2272
2273 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2274 const u8 *bssid)
2275 {
2276 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2277 return;
2278
2279 if (iwlwifi_mod_params.uapsd_disable) {
2280 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2281 return;
2282 }
2283
2284 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2285 }
2286
2287 static void
2288 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2289 struct ieee80211_vif *vif, u8 *peer_addr,
2290 enum nl80211_tdls_operation action)
2291 {
2292 struct iwl_fw_dbg_trigger_tlv *trig;
2293 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2294
2295 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2296 return;
2297
2298 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2299 tdls_trig = (void *)trig->data;
2300 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2301 return;
2302
2303 if (!(tdls_trig->action_bitmap & BIT(action)))
2304 return;
2305
2306 if (tdls_trig->peer_mode &&
2307 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2308 return;
2309
2310 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2311 "TDLS event occurred, peer %pM, action %d",
2312 peer_addr, action);
2313 }
2314
2315 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2316 struct ieee80211_vif *vif,
2317 struct ieee80211_sta *sta,
2318 enum ieee80211_sta_state old_state,
2319 enum ieee80211_sta_state new_state)
2320 {
2321 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2322 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2323 int ret;
2324
2325 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2326 sta->addr, old_state, new_state);
2327
2328 /* this would be a mac80211 bug ... but don't crash */
2329 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2330 return -EINVAL;
2331
2332 /* if a STA is being removed, reuse its ID */
2333 flush_work(&mvm->sta_drained_wk);
2334
2335 mutex_lock(&mvm->mutex);
2336 if (old_state == IEEE80211_STA_NOTEXIST &&
2337 new_state == IEEE80211_STA_NONE) {
2338 /*
2339 * Firmware bug - it'll crash if the beacon interval is less
2340 * than 16. We can't avoid connecting at all, so refuse the
2341 * station state change, this will cause mac80211 to abandon
2342 * attempts to connect to this AP, and eventually wpa_s will
2343 * blacklist the AP...
2344 */
2345 if (vif->type == NL80211_IFTYPE_STATION &&
2346 vif->bss_conf.beacon_int < 16) {
2347 IWL_ERR(mvm,
2348 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2349 sta->addr, vif->bss_conf.beacon_int);
2350 ret = -EINVAL;
2351 goto out_unlock;
2352 }
2353
2354 if (sta->tdls &&
2355 (vif->p2p ||
2356 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2357 IWL_MVM_TDLS_STA_COUNT ||
2358 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2359 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2360 ret = -EBUSY;
2361 goto out_unlock;
2362 }
2363
2364 ret = iwl_mvm_add_sta(mvm, vif, sta);
2365 if (sta->tdls && ret == 0) {
2366 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2367 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2368 NL80211_TDLS_SETUP);
2369 }
2370 } else if (old_state == IEEE80211_STA_NONE &&
2371 new_state == IEEE80211_STA_AUTH) {
2372 /*
2373 * EBS may be disabled due to previous failures reported by FW.
2374 * Reset EBS status here assuming environment has been changed.
2375 */
2376 mvm->last_ebs_successful = true;
2377 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2378 ret = 0;
2379 } else if (old_state == IEEE80211_STA_AUTH &&
2380 new_state == IEEE80211_STA_ASSOC) {
2381 if (vif->type == NL80211_IFTYPE_AP) {
2382 mvmvif->ap_assoc_sta_count++;
2383 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2384 }
2385 ret = iwl_mvm_update_sta(mvm, vif, sta);
2386 if (ret == 0)
2387 iwl_mvm_rs_rate_init(mvm, sta,
2388 mvmvif->phy_ctxt->channel->band,
2389 true);
2390 } else if (old_state == IEEE80211_STA_ASSOC &&
2391 new_state == IEEE80211_STA_AUTHORIZED) {
2392
2393 /* we don't support TDLS during DCM */
2394 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2395 iwl_mvm_teardown_tdls_peers(mvm);
2396
2397 if (sta->tdls)
2398 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2399 NL80211_TDLS_ENABLE_LINK);
2400
2401 /* enable beacon filtering */
2402 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2403 ret = 0;
2404 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2405 new_state == IEEE80211_STA_ASSOC) {
2406 /* disable beacon filtering */
2407 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2408 ret = 0;
2409 } else if (old_state == IEEE80211_STA_ASSOC &&
2410 new_state == IEEE80211_STA_AUTH) {
2411 if (vif->type == NL80211_IFTYPE_AP) {
2412 mvmvif->ap_assoc_sta_count--;
2413 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2414 }
2415 ret = 0;
2416 } else if (old_state == IEEE80211_STA_AUTH &&
2417 new_state == IEEE80211_STA_NONE) {
2418 ret = 0;
2419 } else if (old_state == IEEE80211_STA_NONE &&
2420 new_state == IEEE80211_STA_NOTEXIST) {
2421 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2422 if (sta->tdls) {
2423 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2424 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2425 NL80211_TDLS_DISABLE_LINK);
2426 }
2427 } else {
2428 ret = -EIO;
2429 }
2430 out_unlock:
2431 mutex_unlock(&mvm->mutex);
2432
2433 if (sta->tdls && ret == 0) {
2434 if (old_state == IEEE80211_STA_NOTEXIST &&
2435 new_state == IEEE80211_STA_NONE)
2436 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2437 else if (old_state == IEEE80211_STA_NONE &&
2438 new_state == IEEE80211_STA_NOTEXIST)
2439 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2440 }
2441
2442 return ret;
2443 }
2444
2445 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2446 {
2447 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2448
2449 mvm->rts_threshold = value;
2450
2451 return 0;
2452 }
2453
2454 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2455 struct ieee80211_vif *vif,
2456 struct ieee80211_sta *sta, u32 changed)
2457 {
2458 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2459
2460 if (vif->type == NL80211_IFTYPE_STATION &&
2461 changed & IEEE80211_RC_NSS_CHANGED)
2462 iwl_mvm_sf_update(mvm, vif, false);
2463 }
2464
2465 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2466 struct ieee80211_vif *vif, u16 ac,
2467 const struct ieee80211_tx_queue_params *params)
2468 {
2469 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2470 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2471
2472 mvmvif->queue_params[ac] = *params;
2473
2474 /*
2475 * No need to update right away, we'll get BSS_CHANGED_QOS
2476 * The exception is P2P_DEVICE interface which needs immediate update.
2477 */
2478 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2479 int ret;
2480
2481 mutex_lock(&mvm->mutex);
2482 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2483 mutex_unlock(&mvm->mutex);
2484 return ret;
2485 }
2486 return 0;
2487 }
2488
2489 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2490 struct ieee80211_vif *vif)
2491 {
2492 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2493 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2494 200 + vif->bss_conf.beacon_int);
2495 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2496 100 + vif->bss_conf.beacon_int);
2497
2498 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2499 return;
2500
2501 /*
2502 * iwl_mvm_protect_session() reads directly from the device
2503 * (the system time), so make sure it is available.
2504 */
2505 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2506 return;
2507
2508 mutex_lock(&mvm->mutex);
2509 /* Try really hard to protect the session and hear a beacon */
2510 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2511 mutex_unlock(&mvm->mutex);
2512
2513 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2514 }
2515
2516 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2517 struct ieee80211_vif *vif,
2518 struct cfg80211_sched_scan_request *req,
2519 struct ieee80211_scan_ies *ies)
2520 {
2521 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2522
2523 int ret;
2524
2525 mutex_lock(&mvm->mutex);
2526
2527 if (!vif->bss_conf.idle) {
2528 ret = -EBUSY;
2529 goto out;
2530 }
2531
2532 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2533
2534 out:
2535 mutex_unlock(&mvm->mutex);
2536 return ret;
2537 }
2538
2539 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2540 struct ieee80211_vif *vif)
2541 {
2542 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2543 int ret;
2544
2545 mutex_lock(&mvm->mutex);
2546
2547 /* Due to a race condition, it's possible that mac80211 asks
2548 * us to stop a sched_scan when it's already stopped. This
2549 * can happen, for instance, if we stopped the scan ourselves,
2550 * called ieee80211_sched_scan_stopped() and the userspace called
2551 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2552 * could run. To handle this, simply return if the scan is
2553 * not running.
2554 */
2555 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2556 mutex_unlock(&mvm->mutex);
2557 return 0;
2558 }
2559
2560 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2561 mutex_unlock(&mvm->mutex);
2562 iwl_mvm_wait_for_async_handlers(mvm);
2563
2564 return ret;
2565 }
2566
2567 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2568 enum set_key_cmd cmd,
2569 struct ieee80211_vif *vif,
2570 struct ieee80211_sta *sta,
2571 struct ieee80211_key_conf *key)
2572 {
2573 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2574 struct iwl_mvm_sta *mvmsta;
2575 struct iwl_mvm_key_pn *ptk_pn;
2576 int keyidx = key->keyidx;
2577 int ret;
2578 u8 key_offset;
2579
2580 if (iwlwifi_mod_params.sw_crypto) {
2581 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2582 return -EOPNOTSUPP;
2583 }
2584
2585 switch (key->cipher) {
2586 case WLAN_CIPHER_SUITE_TKIP:
2587 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2588 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2589 break;
2590 case WLAN_CIPHER_SUITE_CCMP:
2591 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2592 break;
2593 case WLAN_CIPHER_SUITE_AES_CMAC:
2594 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2595 break;
2596 case WLAN_CIPHER_SUITE_WEP40:
2597 case WLAN_CIPHER_SUITE_WEP104:
2598 /* For non-client mode, only use WEP keys for TX as we probably
2599 * don't have a station yet anyway and would then have to keep
2600 * track of the keys, linking them to each of the clients/peers
2601 * as they appear. For now, don't do that, for performance WEP
2602 * offload doesn't really matter much, but we need it for some
2603 * other offload features in client mode.
2604 */
2605 if (vif->type != NL80211_IFTYPE_STATION)
2606 return 0;
2607 break;
2608 default:
2609 /* currently FW supports only one optional cipher scheme */
2610 if (hw->n_cipher_schemes &&
2611 hw->cipher_schemes->cipher == key->cipher)
2612 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2613 else
2614 return -EOPNOTSUPP;
2615 }
2616
2617 mutex_lock(&mvm->mutex);
2618
2619 switch (cmd) {
2620 case SET_KEY:
2621 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2622 vif->type == NL80211_IFTYPE_AP) && !sta) {
2623 /*
2624 * GTK on AP interface is a TX-only key, return 0;
2625 * on IBSS they're per-station and because we're lazy
2626 * we don't support them for RX, so do the same.
2627 */
2628 ret = 0;
2629 key->hw_key_idx = STA_KEY_IDX_INVALID;
2630 break;
2631 }
2632
2633 /* During FW restart, in order to restore the state as it was,
2634 * don't try to reprogram keys we previously failed for.
2635 */
2636 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2637 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2638 IWL_DEBUG_MAC80211(mvm,
2639 "skip invalid idx key programming during restart\n");
2640 ret = 0;
2641 break;
2642 }
2643
2644 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2645 sta && iwl_mvm_has_new_rx_api(mvm) &&
2646 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2647 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2648 key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2649 struct ieee80211_key_seq seq;
2650 int tid, q;
2651
2652 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2653 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2654 ptk_pn = kzalloc(sizeof(*ptk_pn) +
2655 mvm->trans->num_rx_queues *
2656 sizeof(ptk_pn->q[0]),
2657 GFP_KERNEL);
2658 if (!ptk_pn) {
2659 ret = -ENOMEM;
2660 break;
2661 }
2662
2663 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2664 ieee80211_get_key_rx_seq(key, tid, &seq);
2665 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2666 memcpy(ptk_pn->q[q].pn[tid],
2667 seq.ccmp.pn,
2668 IEEE80211_CCMP_PN_LEN);
2669 }
2670
2671 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2672 }
2673
2674 /* in HW restart reuse the index, otherwise request a new one */
2675 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2676 key_offset = key->hw_key_idx;
2677 else
2678 key_offset = STA_KEY_IDX_INVALID;
2679
2680 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2681 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2682 if (ret) {
2683 IWL_WARN(mvm, "set key failed\n");
2684 /*
2685 * can't add key for RX, but we don't need it
2686 * in the device for TX so still return 0
2687 */
2688 key->hw_key_idx = STA_KEY_IDX_INVALID;
2689 ret = 0;
2690 }
2691
2692 break;
2693 case DISABLE_KEY:
2694 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2695 ret = 0;
2696 break;
2697 }
2698
2699 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2700 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2701 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2702 key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2703 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2704 ptk_pn = rcu_dereference_protected(
2705 mvmsta->ptk_pn[keyidx],
2706 lockdep_is_held(&mvm->mutex));
2707 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2708 if (ptk_pn)
2709 kfree_rcu(ptk_pn, rcu_head);
2710 }
2711
2712 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2713 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2714 break;
2715 default:
2716 ret = -EINVAL;
2717 }
2718
2719 mutex_unlock(&mvm->mutex);
2720 return ret;
2721 }
2722
2723 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2724 struct ieee80211_vif *vif,
2725 struct ieee80211_key_conf *keyconf,
2726 struct ieee80211_sta *sta,
2727 u32 iv32, u16 *phase1key)
2728 {
2729 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2730
2731 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2732 return;
2733
2734 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2735 }
2736
2737
2738 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2739 struct iwl_rx_packet *pkt, void *data)
2740 {
2741 struct iwl_mvm *mvm =
2742 container_of(notif_wait, struct iwl_mvm, notif_wait);
2743 struct iwl_hs20_roc_res *resp;
2744 int resp_len = iwl_rx_packet_payload_len(pkt);
2745 struct iwl_mvm_time_event_data *te_data = data;
2746
2747 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2748 return true;
2749
2750 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2751 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2752 return true;
2753 }
2754
2755 resp = (void *)pkt->data;
2756
2757 IWL_DEBUG_TE(mvm,
2758 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2759 resp->status, resp->event_unique_id);
2760
2761 te_data->uid = le32_to_cpu(resp->event_unique_id);
2762 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2763 te_data->uid);
2764
2765 spin_lock_bh(&mvm->time_event_lock);
2766 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2767 spin_unlock_bh(&mvm->time_event_lock);
2768
2769 return true;
2770 }
2771
2772 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2773 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2774 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2775 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2776 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2777 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2778 struct ieee80211_channel *channel,
2779 struct ieee80211_vif *vif,
2780 int duration)
2781 {
2782 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2783 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2784 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2785 static const u16 time_event_response[] = { HOT_SPOT_CMD };
2786 struct iwl_notification_wait wait_time_event;
2787 u32 dtim_interval = vif->bss_conf.dtim_period *
2788 vif->bss_conf.beacon_int;
2789 u32 req_dur, delay;
2790 struct iwl_hs20_roc_req aux_roc_req = {
2791 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2792 .id_and_color =
2793 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2794 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2795 /* Set the channel info data */
2796 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2797 PHY_BAND_24 : PHY_BAND_5,
2798 .channel_info.channel = channel->hw_value,
2799 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2800 /* Set the time and duration */
2801 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2802 };
2803
2804 delay = AUX_ROC_MIN_DELAY;
2805 req_dur = MSEC_TO_TU(duration);
2806
2807 /*
2808 * If we are associated we want the delay time to be at least one
2809 * dtim interval so that the FW can wait until after the DTIM and
2810 * then start the time event, this will potentially allow us to
2811 * remain off-channel for the max duration.
2812 * Since we want to use almost a whole dtim interval we would also
2813 * like the delay to be for 2-3 dtim intervals, in case there are
2814 * other time events with higher priority.
2815 */
2816 if (vif->bss_conf.assoc) {
2817 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2818 /* We cannot remain off-channel longer than the DTIM interval */
2819 if (dtim_interval <= req_dur) {
2820 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2821 if (req_dur <= AUX_ROC_MIN_DURATION)
2822 req_dur = dtim_interval -
2823 AUX_ROC_MIN_SAFETY_BUFFER;
2824 }
2825 }
2826
2827 aux_roc_req.duration = cpu_to_le32(req_dur);
2828 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2829
2830 IWL_DEBUG_TE(mvm,
2831 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2832 channel->hw_value, req_dur, duration, delay,
2833 dtim_interval);
2834 /* Set the node address */
2835 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2836
2837 lockdep_assert_held(&mvm->mutex);
2838
2839 spin_lock_bh(&mvm->time_event_lock);
2840
2841 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2842 spin_unlock_bh(&mvm->time_event_lock);
2843 return -EIO;
2844 }
2845
2846 te_data->vif = vif;
2847 te_data->duration = duration;
2848 te_data->id = HOT_SPOT_CMD;
2849
2850 spin_unlock_bh(&mvm->time_event_lock);
2851
2852 /*
2853 * Use a notification wait, which really just processes the
2854 * command response and doesn't wait for anything, in order
2855 * to be able to process the response and get the UID inside
2856 * the RX path. Using CMD_WANT_SKB doesn't work because it
2857 * stores the buffer and then wakes up this thread, by which
2858 * time another notification (that the time event started)
2859 * might already be processed unsuccessfully.
2860 */
2861 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2862 time_event_response,
2863 ARRAY_SIZE(time_event_response),
2864 iwl_mvm_rx_aux_roc, te_data);
2865
2866 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2867 &aux_roc_req);
2868
2869 if (res) {
2870 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2871 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2872 goto out_clear_te;
2873 }
2874
2875 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2876 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2877 /* should never fail */
2878 WARN_ON_ONCE(res);
2879
2880 if (res) {
2881 out_clear_te:
2882 spin_lock_bh(&mvm->time_event_lock);
2883 iwl_mvm_te_clear_data(mvm, te_data);
2884 spin_unlock_bh(&mvm->time_event_lock);
2885 }
2886
2887 return res;
2888 }
2889
2890 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2891 struct ieee80211_vif *vif,
2892 struct ieee80211_channel *channel,
2893 int duration,
2894 enum ieee80211_roc_type type)
2895 {
2896 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2897 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2898 struct cfg80211_chan_def chandef;
2899 struct iwl_mvm_phy_ctxt *phy_ctxt;
2900 int ret, i;
2901
2902 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2903 duration, type);
2904
2905 flush_work(&mvm->roc_done_wk);
2906
2907 mutex_lock(&mvm->mutex);
2908
2909 switch (vif->type) {
2910 case NL80211_IFTYPE_STATION:
2911 if (fw_has_capa(&mvm->fw->ucode_capa,
2912 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2913 /* Use aux roc framework (HS20) */
2914 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2915 vif, duration);
2916 goto out_unlock;
2917 }
2918 IWL_ERR(mvm, "hotspot not supported\n");
2919 ret = -EINVAL;
2920 goto out_unlock;
2921 case NL80211_IFTYPE_P2P_DEVICE:
2922 /* handle below */
2923 break;
2924 default:
2925 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2926 ret = -EINVAL;
2927 goto out_unlock;
2928 }
2929
2930 for (i = 0; i < NUM_PHY_CTX; i++) {
2931 phy_ctxt = &mvm->phy_ctxts[i];
2932 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2933 continue;
2934
2935 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2936 /*
2937 * Unbind the P2P_DEVICE from the current PHY context,
2938 * and if the PHY context is not used remove it.
2939 */
2940 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2941 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2942 goto out_unlock;
2943
2944 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2945
2946 /* Bind the P2P_DEVICE to the current PHY Context */
2947 mvmvif->phy_ctxt = phy_ctxt;
2948
2949 ret = iwl_mvm_binding_add_vif(mvm, vif);
2950 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2951 goto out_unlock;
2952
2953 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2954 goto schedule_time_event;
2955 }
2956 }
2957
2958 /* Need to update the PHY context only if the ROC channel changed */
2959 if (channel == mvmvif->phy_ctxt->channel)
2960 goto schedule_time_event;
2961
2962 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2963
2964 /*
2965 * Change the PHY context configuration as it is currently referenced
2966 * only by the P2P Device MAC
2967 */
2968 if (mvmvif->phy_ctxt->ref == 1) {
2969 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2970 &chandef, 1, 1);
2971 if (ret)
2972 goto out_unlock;
2973 } else {
2974 /*
2975 * The PHY context is shared with other MACs. Need to remove the
2976 * P2P Device from the binding, allocate an new PHY context and
2977 * create a new binding
2978 */
2979 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2980 if (!phy_ctxt) {
2981 ret = -ENOSPC;
2982 goto out_unlock;
2983 }
2984
2985 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2986 1, 1);
2987 if (ret) {
2988 IWL_ERR(mvm, "Failed to change PHY context\n");
2989 goto out_unlock;
2990 }
2991
2992 /* Unbind the P2P_DEVICE from the current PHY context */
2993 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2994 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2995 goto out_unlock;
2996
2997 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2998
2999 /* Bind the P2P_DEVICE to the new allocated PHY context */
3000 mvmvif->phy_ctxt = phy_ctxt;
3001
3002 ret = iwl_mvm_binding_add_vif(mvm, vif);
3003 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3004 goto out_unlock;
3005
3006 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3007 }
3008
3009 schedule_time_event:
3010 /* Schedule the time events */
3011 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3012
3013 out_unlock:
3014 mutex_unlock(&mvm->mutex);
3015 IWL_DEBUG_MAC80211(mvm, "leave\n");
3016 return ret;
3017 }
3018
3019 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3020 {
3021 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3022
3023 IWL_DEBUG_MAC80211(mvm, "enter\n");
3024
3025 mutex_lock(&mvm->mutex);
3026 iwl_mvm_stop_roc(mvm);
3027 mutex_unlock(&mvm->mutex);
3028
3029 IWL_DEBUG_MAC80211(mvm, "leave\n");
3030 return 0;
3031 }
3032
3033 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3034 struct ieee80211_chanctx_conf *ctx)
3035 {
3036 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3037 struct iwl_mvm_phy_ctxt *phy_ctxt;
3038 int ret;
3039
3040 lockdep_assert_held(&mvm->mutex);
3041
3042 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3043
3044 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3045 if (!phy_ctxt) {
3046 ret = -ENOSPC;
3047 goto out;
3048 }
3049
3050 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3051 ctx->rx_chains_static,
3052 ctx->rx_chains_dynamic);
3053 if (ret) {
3054 IWL_ERR(mvm, "Failed to add PHY context\n");
3055 goto out;
3056 }
3057
3058 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3059 *phy_ctxt_id = phy_ctxt->id;
3060 out:
3061 return ret;
3062 }
3063
3064 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3065 struct ieee80211_chanctx_conf *ctx)
3066 {
3067 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3068 int ret;
3069
3070 mutex_lock(&mvm->mutex);
3071 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3072 mutex_unlock(&mvm->mutex);
3073
3074 return ret;
3075 }
3076
3077 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3078 struct ieee80211_chanctx_conf *ctx)
3079 {
3080 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3081 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3082
3083 lockdep_assert_held(&mvm->mutex);
3084
3085 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3086 }
3087
3088 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3089 struct ieee80211_chanctx_conf *ctx)
3090 {
3091 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3092
3093 mutex_lock(&mvm->mutex);
3094 __iwl_mvm_remove_chanctx(mvm, ctx);
3095 mutex_unlock(&mvm->mutex);
3096 }
3097
3098 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3099 struct ieee80211_chanctx_conf *ctx,
3100 u32 changed)
3101 {
3102 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3103 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3104 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3105
3106 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3107 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3108 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3109 IEEE80211_CHANCTX_CHANGE_RADAR |
3110 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3111 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3112 phy_ctxt->ref, changed))
3113 return;
3114
3115 mutex_lock(&mvm->mutex);
3116 iwl_mvm_bt_coex_vif_change(mvm);
3117 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3118 ctx->rx_chains_static,
3119 ctx->rx_chains_dynamic);
3120 mutex_unlock(&mvm->mutex);
3121 }
3122
3123 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3124 struct ieee80211_vif *vif,
3125 struct ieee80211_chanctx_conf *ctx,
3126 bool switching_chanctx)
3127 {
3128 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3129 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3130 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3131 int ret;
3132
3133 lockdep_assert_held(&mvm->mutex);
3134
3135 mvmvif->phy_ctxt = phy_ctxt;
3136
3137 switch (vif->type) {
3138 case NL80211_IFTYPE_AP:
3139 /* only needed if we're switching chanctx (i.e. during CSA) */
3140 if (switching_chanctx) {
3141 mvmvif->ap_ibss_active = true;
3142 break;
3143 }
3144 case NL80211_IFTYPE_ADHOC:
3145 /*
3146 * The AP binding flow is handled as part of the start_ap flow
3147 * (in bss_info_changed), similarly for IBSS.
3148 */
3149 ret = 0;
3150 goto out;
3151 case NL80211_IFTYPE_STATION:
3152 break;
3153 case NL80211_IFTYPE_MONITOR:
3154 /* always disable PS when a monitor interface is active */
3155 mvmvif->ps_disabled = true;
3156 break;
3157 default:
3158 ret = -EINVAL;
3159 goto out;
3160 }
3161
3162 ret = iwl_mvm_binding_add_vif(mvm, vif);
3163 if (ret)
3164 goto out;
3165
3166 /*
3167 * Power state must be updated before quotas,
3168 * otherwise fw will complain.
3169 */
3170 iwl_mvm_power_update_mac(mvm);
3171
3172 /* Setting the quota at this stage is only required for monitor
3173 * interfaces. For the other types, the bss_info changed flow
3174 * will handle quota settings.
3175 */
3176 if (vif->type == NL80211_IFTYPE_MONITOR) {
3177 mvmvif->monitor_active = true;
3178 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3179 if (ret)
3180 goto out_remove_binding;
3181
3182 ret = iwl_mvm_add_snif_sta(mvm, vif);
3183 if (ret)
3184 goto out_remove_binding;
3185
3186 }
3187
3188 /* Handle binding during CSA */
3189 if (vif->type == NL80211_IFTYPE_AP) {
3190 iwl_mvm_update_quotas(mvm, false, NULL);
3191 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3192 }
3193
3194 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3195 u32 duration = 2 * vif->bss_conf.beacon_int;
3196
3197 /* iwl_mvm_protect_session() reads directly from the
3198 * device (the system time), so make sure it is
3199 * available.
3200 */
3201 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3202 if (ret)
3203 goto out_remove_binding;
3204
3205 /* Protect the session to make sure we hear the first
3206 * beacon on the new channel.
3207 */
3208 iwl_mvm_protect_session(mvm, vif, duration, duration,
3209 vif->bss_conf.beacon_int / 2,
3210 true);
3211
3212 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3213
3214 iwl_mvm_update_quotas(mvm, false, NULL);
3215 }
3216
3217 goto out;
3218
3219 out_remove_binding:
3220 iwl_mvm_binding_remove_vif(mvm, vif);
3221 iwl_mvm_power_update_mac(mvm);
3222 out:
3223 if (ret)
3224 mvmvif->phy_ctxt = NULL;
3225 return ret;
3226 }
3227 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3228 struct ieee80211_vif *vif,
3229 struct ieee80211_chanctx_conf *ctx)
3230 {
3231 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3232 int ret;
3233
3234 mutex_lock(&mvm->mutex);
3235 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3236 mutex_unlock(&mvm->mutex);
3237
3238 return ret;
3239 }
3240
3241 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3242 struct ieee80211_vif *vif,
3243 struct ieee80211_chanctx_conf *ctx,
3244 bool switching_chanctx)
3245 {
3246 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3247 struct ieee80211_vif *disabled_vif = NULL;
3248
3249 lockdep_assert_held(&mvm->mutex);
3250
3251 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3252
3253 switch (vif->type) {
3254 case NL80211_IFTYPE_ADHOC:
3255 goto out;
3256 case NL80211_IFTYPE_MONITOR:
3257 mvmvif->monitor_active = false;
3258 mvmvif->ps_disabled = false;
3259 iwl_mvm_rm_snif_sta(mvm, vif);
3260 break;
3261 case NL80211_IFTYPE_AP:
3262 /* This part is triggered only during CSA */
3263 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3264 goto out;
3265
3266 mvmvif->csa_countdown = false;
3267
3268 /* Set CS bit on all the stations */
3269 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3270
3271 /* Save blocked iface, the timeout is set on the next beacon */
3272 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3273
3274 mvmvif->ap_ibss_active = false;
3275 break;
3276 case NL80211_IFTYPE_STATION:
3277 if (!switching_chanctx)
3278 break;
3279
3280 disabled_vif = vif;
3281
3282 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3283 break;
3284 default:
3285 break;
3286 }
3287
3288 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3289 iwl_mvm_binding_remove_vif(mvm, vif);
3290
3291 out:
3292 mvmvif->phy_ctxt = NULL;
3293 iwl_mvm_power_update_mac(mvm);
3294 }
3295
3296 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3297 struct ieee80211_vif *vif,
3298 struct ieee80211_chanctx_conf *ctx)
3299 {
3300 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3301
3302 mutex_lock(&mvm->mutex);
3303 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3304 mutex_unlock(&mvm->mutex);
3305 }
3306
3307 static int
3308 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3309 struct ieee80211_vif_chanctx_switch *vifs)
3310 {
3311 int ret;
3312
3313 mutex_lock(&mvm->mutex);
3314 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3315 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3316
3317 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3318 if (ret) {
3319 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3320 goto out_reassign;
3321 }
3322
3323 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3324 true);
3325 if (ret) {
3326 IWL_ERR(mvm,
3327 "failed to assign new_ctx during channel switch\n");
3328 goto out_remove;
3329 }
3330
3331 /* we don't support TDLS during DCM - can be caused by channel switch */
3332 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3333 iwl_mvm_teardown_tdls_peers(mvm);
3334
3335 goto out;
3336
3337 out_remove:
3338 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3339
3340 out_reassign:
3341 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3342 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3343 goto out_restart;
3344 }
3345
3346 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3347 true)) {
3348 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3349 goto out_restart;
3350 }
3351
3352 goto out;
3353
3354 out_restart:
3355 /* things keep failing, better restart the hw */
3356 iwl_mvm_nic_restart(mvm, false);
3357
3358 out:
3359 mutex_unlock(&mvm->mutex);
3360
3361 return ret;
3362 }
3363
3364 static int
3365 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3366 struct ieee80211_vif_chanctx_switch *vifs)
3367 {
3368 int ret;
3369
3370 mutex_lock(&mvm->mutex);
3371 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3372
3373 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3374 true);
3375 if (ret) {
3376 IWL_ERR(mvm,
3377 "failed to assign new_ctx during channel switch\n");
3378 goto out_reassign;
3379 }
3380
3381 goto out;
3382
3383 out_reassign:
3384 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3385 true)) {
3386 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3387 goto out_restart;
3388 }
3389
3390 goto out;
3391
3392 out_restart:
3393 /* things keep failing, better restart the hw */
3394 iwl_mvm_nic_restart(mvm, false);
3395
3396 out:
3397 mutex_unlock(&mvm->mutex);
3398
3399 return ret;
3400 }
3401
3402 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3403 struct ieee80211_vif_chanctx_switch *vifs,
3404 int n_vifs,
3405 enum ieee80211_chanctx_switch_mode mode)
3406 {
3407 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3408 int ret;
3409
3410 /* we only support a single-vif right now */
3411 if (n_vifs > 1)
3412 return -EOPNOTSUPP;
3413
3414 switch (mode) {
3415 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3416 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3417 break;
3418 case CHANCTX_SWMODE_REASSIGN_VIF:
3419 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3420 break;
3421 default:
3422 ret = -EOPNOTSUPP;
3423 break;
3424 }
3425
3426 return ret;
3427 }
3428
3429 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3430 struct ieee80211_sta *sta,
3431 bool set)
3432 {
3433 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3434 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3435
3436 if (!mvm_sta || !mvm_sta->vif) {
3437 IWL_ERR(mvm, "Station is not associated to a vif\n");
3438 return -EINVAL;
3439 }
3440
3441 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3442 }
3443
3444 #ifdef CONFIG_NL80211_TESTMODE
3445 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3446 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3447 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3448 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3449 };
3450
3451 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3452 struct ieee80211_vif *vif,
3453 void *data, int len)
3454 {
3455 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3456 int err;
3457 u32 noa_duration;
3458
3459 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3460 if (err)
3461 return err;
3462
3463 if (!tb[IWL_MVM_TM_ATTR_CMD])
3464 return -EINVAL;
3465
3466 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3467 case IWL_MVM_TM_CMD_SET_NOA:
3468 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3469 !vif->bss_conf.enable_beacon ||
3470 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3471 return -EINVAL;
3472
3473 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3474 if (noa_duration >= vif->bss_conf.beacon_int)
3475 return -EINVAL;
3476
3477 mvm->noa_duration = noa_duration;
3478 mvm->noa_vif = vif;
3479
3480 return iwl_mvm_update_quotas(mvm, false, NULL);
3481 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3482 /* must be associated client vif - ignore authorized */
3483 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3484 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3485 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3486 return -EINVAL;
3487
3488 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3489 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3490 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3491 }
3492
3493 return -EOPNOTSUPP;
3494 }
3495
3496 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3497 struct ieee80211_vif *vif,
3498 void *data, int len)
3499 {
3500 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3501 int err;
3502
3503 mutex_lock(&mvm->mutex);
3504 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3505 mutex_unlock(&mvm->mutex);
3506
3507 return err;
3508 }
3509 #endif
3510
3511 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3512 struct ieee80211_vif *vif,
3513 struct ieee80211_channel_switch *chsw)
3514 {
3515 /* By implementing this operation, we prevent mac80211 from
3516 * starting its own channel switch timer, so that we can call
3517 * ieee80211_chswitch_done() ourselves at the right time
3518 * (which is when the absence time event starts).
3519 */
3520
3521 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3522 "dummy channel switch op\n");
3523 }
3524
3525 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3526 struct ieee80211_vif *vif,
3527 struct ieee80211_channel_switch *chsw)
3528 {
3529 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3530 struct ieee80211_vif *csa_vif;
3531 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3532 u32 apply_time;
3533 int ret;
3534
3535 mutex_lock(&mvm->mutex);
3536
3537 mvmvif->csa_failed = false;
3538
3539 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3540 chsw->chandef.center_freq1);
3541
3542 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3543
3544 switch (vif->type) {
3545 case NL80211_IFTYPE_AP:
3546 csa_vif =
3547 rcu_dereference_protected(mvm->csa_vif,
3548 lockdep_is_held(&mvm->mutex));
3549 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3550 "Another CSA is already in progress")) {
3551 ret = -EBUSY;
3552 goto out_unlock;
3553 }
3554
3555 rcu_assign_pointer(mvm->csa_vif, vif);
3556
3557 if (WARN_ONCE(mvmvif->csa_countdown,
3558 "Previous CSA countdown didn't complete")) {
3559 ret = -EBUSY;
3560 goto out_unlock;
3561 }
3562
3563 break;
3564 case NL80211_IFTYPE_STATION:
3565 /* Schedule the time event to a bit before beacon 1,
3566 * to make sure we're in the new channel when the
3567 * GO/AP arrives.
3568 */
3569 apply_time = chsw->device_timestamp +
3570 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3571 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3572
3573 if (chsw->block_tx)
3574 iwl_mvm_csa_client_absent(mvm, vif);
3575
3576 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3577 apply_time);
3578 if (mvmvif->bf_data.bf_enabled) {
3579 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3580 if (ret)
3581 goto out_unlock;
3582 }
3583
3584 break;
3585 default:
3586 break;
3587 }
3588
3589 mvmvif->ps_disabled = true;
3590
3591 ret = iwl_mvm_power_update_ps(mvm);
3592 if (ret)
3593 goto out_unlock;
3594
3595 /* we won't be on this channel any longer */
3596 iwl_mvm_teardown_tdls_peers(mvm);
3597
3598 out_unlock:
3599 mutex_unlock(&mvm->mutex);
3600
3601 return ret;
3602 }
3603
3604 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3605 struct ieee80211_vif *vif)
3606 {
3607 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3608 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3609 int ret;
3610
3611 mutex_lock(&mvm->mutex);
3612
3613 if (mvmvif->csa_failed) {
3614 mvmvif->csa_failed = false;
3615 ret = -EIO;
3616 goto out_unlock;
3617 }
3618
3619 if (vif->type == NL80211_IFTYPE_STATION) {
3620 struct iwl_mvm_sta *mvmsta;
3621
3622 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3623 mvmvif->ap_sta_id);
3624
3625 if (WARN_ON(!mvmsta)) {
3626 ret = -EIO;
3627 goto out_unlock;
3628 }
3629
3630 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3631
3632 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3633
3634 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3635 if (ret)
3636 goto out_unlock;
3637
3638 iwl_mvm_stop_session_protection(mvm, vif);
3639 }
3640
3641 mvmvif->ps_disabled = false;
3642
3643 ret = iwl_mvm_power_update_ps(mvm);
3644
3645 out_unlock:
3646 mutex_unlock(&mvm->mutex);
3647
3648 return ret;
3649 }
3650
3651 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3652 struct ieee80211_vif *vif, u32 queues, bool drop)
3653 {
3654 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3655 struct iwl_mvm_vif *mvmvif;
3656 struct iwl_mvm_sta *mvmsta;
3657 struct ieee80211_sta *sta;
3658 int i;
3659 u32 msk = 0;
3660
3661 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3662 return;
3663
3664 mutex_lock(&mvm->mutex);
3665 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3666
3667 /* flush the AP-station and all TDLS peers */
3668 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3669 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3670 lockdep_is_held(&mvm->mutex));
3671 if (IS_ERR_OR_NULL(sta))
3672 continue;
3673
3674 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3675 if (mvmsta->vif != vif)
3676 continue;
3677
3678 /* make sure only TDLS peers or the AP are flushed */
3679 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3680
3681 msk |= mvmsta->tfd_queue_msk;
3682 }
3683
3684 if (drop) {
3685 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3686 IWL_ERR(mvm, "flush request fail\n");
3687 mutex_unlock(&mvm->mutex);
3688 } else {
3689 mutex_unlock(&mvm->mutex);
3690
3691 /* this can take a while, and we may need/want other operations
3692 * to succeed while doing this, so do it without the mutex held
3693 */
3694 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3695 }
3696 }
3697
3698 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3699 struct survey_info *survey)
3700 {
3701 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3702 int ret;
3703
3704 memset(survey, 0, sizeof(*survey));
3705
3706 /* only support global statistics right now */
3707 if (idx != 0)
3708 return -ENOENT;
3709
3710 if (fw_has_capa(&mvm->fw->ucode_capa,
3711 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3712 return -ENOENT;
3713
3714 mutex_lock(&mvm->mutex);
3715
3716 if (mvm->ucode_loaded) {
3717 ret = iwl_mvm_request_statistics(mvm, false);
3718 if (ret)
3719 goto out;
3720 }
3721
3722 survey->filled = SURVEY_INFO_TIME |
3723 SURVEY_INFO_TIME_RX |
3724 SURVEY_INFO_TIME_TX |
3725 SURVEY_INFO_TIME_SCAN;
3726 survey->time = mvm->accu_radio_stats.on_time_rf +
3727 mvm->radio_stats.on_time_rf;
3728 do_div(survey->time, USEC_PER_MSEC);
3729
3730 survey->time_rx = mvm->accu_radio_stats.rx_time +
3731 mvm->radio_stats.rx_time;
3732 do_div(survey->time_rx, USEC_PER_MSEC);
3733
3734 survey->time_tx = mvm->accu_radio_stats.tx_time +
3735 mvm->radio_stats.tx_time;
3736 do_div(survey->time_tx, USEC_PER_MSEC);
3737
3738 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3739 mvm->radio_stats.on_time_scan;
3740 do_div(survey->time_scan, USEC_PER_MSEC);
3741
3742 ret = 0;
3743 out:
3744 mutex_unlock(&mvm->mutex);
3745 return ret;
3746 }
3747
3748 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3749 struct ieee80211_vif *vif,
3750 struct ieee80211_sta *sta,
3751 struct station_info *sinfo)
3752 {
3753 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3754 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3755 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3756
3757 if (fw_has_capa(&mvm->fw->ucode_capa,
3758 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3759 return;
3760
3761 /* if beacon filtering isn't on mac80211 does it anyway */
3762 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3763 return;
3764
3765 if (!vif->bss_conf.assoc)
3766 return;
3767
3768 mutex_lock(&mvm->mutex);
3769
3770 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3771 goto unlock;
3772
3773 if (iwl_mvm_request_statistics(mvm, false))
3774 goto unlock;
3775
3776 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3777 mvmvif->beacon_stats.accu_num_beacons;
3778 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3779 if (mvmvif->beacon_stats.avg_signal) {
3780 /* firmware only reports a value after RXing a few beacons */
3781 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3782 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3783 }
3784 unlock:
3785 mutex_unlock(&mvm->mutex);
3786 }
3787
3788 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3789 struct ieee80211_vif *vif,
3790 const struct ieee80211_event *event)
3791 {
3792 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
3793 do { \
3794 if ((_cnt) && --(_cnt)) \
3795 break; \
3796 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3797 } while (0)
3798
3799 struct iwl_fw_dbg_trigger_tlv *trig;
3800 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3801
3802 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3803 return;
3804
3805 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3806 trig_mlme = (void *)trig->data;
3807 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3808 return;
3809
3810 if (event->u.mlme.data == ASSOC_EVENT) {
3811 if (event->u.mlme.status == MLME_DENIED)
3812 CHECK_MLME_TRIGGER(mvm, trig, buf,
3813 trig_mlme->stop_assoc_denied,
3814 "DENIED ASSOC: reason %d",
3815 event->u.mlme.reason);
3816 else if (event->u.mlme.status == MLME_TIMEOUT)
3817 CHECK_MLME_TRIGGER(mvm, trig, buf,
3818 trig_mlme->stop_assoc_timeout,
3819 "ASSOC TIMEOUT");
3820 } else if (event->u.mlme.data == AUTH_EVENT) {
3821 if (event->u.mlme.status == MLME_DENIED)
3822 CHECK_MLME_TRIGGER(mvm, trig, buf,
3823 trig_mlme->stop_auth_denied,
3824 "DENIED AUTH: reason %d",
3825 event->u.mlme.reason);
3826 else if (event->u.mlme.status == MLME_TIMEOUT)
3827 CHECK_MLME_TRIGGER(mvm, trig, buf,
3828 trig_mlme->stop_auth_timeout,
3829 "AUTH TIMEOUT");
3830 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3831 CHECK_MLME_TRIGGER(mvm, trig, buf,
3832 trig_mlme->stop_rx_deauth,
3833 "DEAUTH RX %d", event->u.mlme.reason);
3834 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3835 CHECK_MLME_TRIGGER(mvm, trig, buf,
3836 trig_mlme->stop_tx_deauth,
3837 "DEAUTH TX %d", event->u.mlme.reason);
3838 }
3839 #undef CHECK_MLME_TRIGGER
3840 }
3841
3842 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3843 struct ieee80211_vif *vif,
3844 const struct ieee80211_event *event)
3845 {
3846 struct iwl_fw_dbg_trigger_tlv *trig;
3847 struct iwl_fw_dbg_trigger_ba *ba_trig;
3848
3849 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3850 return;
3851
3852 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3853 ba_trig = (void *)trig->data;
3854 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3855 return;
3856
3857 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3858 return;
3859
3860 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3861 "BAR received from %pM, tid %d, ssn %d",
3862 event->u.ba.sta->addr, event->u.ba.tid,
3863 event->u.ba.ssn);
3864 }
3865
3866 static void
3867 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3868 struct ieee80211_vif *vif,
3869 const struct ieee80211_event *event)
3870 {
3871 struct iwl_fw_dbg_trigger_tlv *trig;
3872 struct iwl_fw_dbg_trigger_ba *ba_trig;
3873
3874 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3875 return;
3876
3877 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3878 ba_trig = (void *)trig->data;
3879 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3880 return;
3881
3882 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3883 return;
3884
3885 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3886 "Frame from %pM timed out, tid %d",
3887 event->u.ba.sta->addr, event->u.ba.tid);
3888 }
3889
3890 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3891 struct ieee80211_vif *vif,
3892 const struct ieee80211_event *event)
3893 {
3894 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3895
3896 switch (event->type) {
3897 case MLME_EVENT:
3898 iwl_mvm_event_mlme_callback(mvm, vif, event);
3899 break;
3900 case BAR_RX_EVENT:
3901 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3902 break;
3903 case BA_FRAME_TIMEOUT:
3904 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3905 break;
3906 default:
3907 break;
3908 }
3909 }
3910
3911 const struct ieee80211_ops iwl_mvm_hw_ops = {
3912 .tx = iwl_mvm_mac_tx,
3913 .ampdu_action = iwl_mvm_mac_ampdu_action,
3914 .start = iwl_mvm_mac_start,
3915 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3916 .stop = iwl_mvm_mac_stop,
3917 .add_interface = iwl_mvm_mac_add_interface,
3918 .remove_interface = iwl_mvm_mac_remove_interface,
3919 .config = iwl_mvm_mac_config,
3920 .prepare_multicast = iwl_mvm_prepare_multicast,
3921 .configure_filter = iwl_mvm_configure_filter,
3922 .config_iface_filter = iwl_mvm_config_iface_filter,
3923 .bss_info_changed = iwl_mvm_bss_info_changed,
3924 .hw_scan = iwl_mvm_mac_hw_scan,
3925 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3926 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3927 .sta_state = iwl_mvm_mac_sta_state,
3928 .sta_notify = iwl_mvm_mac_sta_notify,
3929 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3930 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3931 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3932 .sta_rc_update = iwl_mvm_sta_rc_update,
3933 .conf_tx = iwl_mvm_mac_conf_tx,
3934 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3935 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3936 .flush = iwl_mvm_mac_flush,
3937 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3938 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3939 .set_key = iwl_mvm_mac_set_key,
3940 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3941 .remain_on_channel = iwl_mvm_roc,
3942 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3943 .add_chanctx = iwl_mvm_add_chanctx,
3944 .remove_chanctx = iwl_mvm_remove_chanctx,
3945 .change_chanctx = iwl_mvm_change_chanctx,
3946 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3947 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3948 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3949
3950 .start_ap = iwl_mvm_start_ap_ibss,
3951 .stop_ap = iwl_mvm_stop_ap_ibss,
3952 .join_ibss = iwl_mvm_start_ap_ibss,
3953 .leave_ibss = iwl_mvm_stop_ap_ibss,
3954
3955 .set_tim = iwl_mvm_set_tim,
3956
3957 .channel_switch = iwl_mvm_channel_switch,
3958 .pre_channel_switch = iwl_mvm_pre_channel_switch,
3959 .post_channel_switch = iwl_mvm_post_channel_switch,
3960
3961 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3962 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3963 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3964
3965 .event_callback = iwl_mvm_mac_event_callback,
3966
3967 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3968
3969 #ifdef CONFIG_PM_SLEEP
3970 /* look at d3.c */
3971 .suspend = iwl_mvm_suspend,
3972 .resume = iwl_mvm_resume,
3973 .set_wakeup = iwl_mvm_set_wakeup,
3974 .set_rekey_data = iwl_mvm_set_rekey_data,
3975 #if IS_ENABLED(CONFIG_IPV6)
3976 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3977 #endif
3978 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3979 #endif
3980 .get_survey = iwl_mvm_mac_get_survey,
3981 .sta_statistics = iwl_mvm_mac_sta_statistics,
3982 };
Linux kernel - Deliverables
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