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[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / 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 <ilw@linux.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 <net/mac80211.h>
74 #include <net/ieee80211_radiotap.h>
75 #include <net/tcp.h>
76
77 #include "iwl-op-mode.h"
78 #include "iwl-io.h"
79 #include "mvm.h"
80 #include "sta.h"
81 #include "time-event.h"
82 #include "iwl-eeprom-parse.h"
83 #include "fw-api-scan.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
91 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
92 {
93 .max = 1,
94 .types = BIT(NL80211_IFTYPE_STATION),
95 },
96 {
97 .max = 1,
98 .types = BIT(NL80211_IFTYPE_AP) |
99 BIT(NL80211_IFTYPE_P2P_CLIENT) |
100 BIT(NL80211_IFTYPE_P2P_GO),
101 },
102 {
103 .max = 1,
104 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
105 },
106 };
107
108 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
109 {
110 .num_different_channels = 2,
111 .max_interfaces = 3,
112 .limits = iwl_mvm_limits,
113 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
114 },
115 };
116
117 #ifdef CONFIG_PM_SLEEP
118 static const struct nl80211_wowlan_tcp_data_token_feature
119 iwl_mvm_wowlan_tcp_token_feature = {
120 .min_len = 0,
121 .max_len = 255,
122 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
123 };
124
125 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
126 .tok = &iwl_mvm_wowlan_tcp_token_feature,
127 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
128 sizeof(struct ethhdr) -
129 sizeof(struct iphdr) -
130 sizeof(struct tcphdr),
131 .data_interval_max = 65535, /* __le16 in API */
132 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
133 sizeof(struct ethhdr) -
134 sizeof(struct iphdr) -
135 sizeof(struct tcphdr),
136 .seq = true,
137 };
138 #endif
139
140 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
141 /*
142 * Use the reserved field to indicate magic values.
143 * these values will only be used internally by the driver,
144 * and won't make it to the fw (reserved will be 0).
145 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
146 * be the vif's ip address. in case there is not a single
147 * ip address (0, or more than 1), this attribute will
148 * be skipped.
149 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
150 * the LSB bytes of the vif's mac address
151 */
152 enum {
153 BC_FILTER_MAGIC_NONE = 0,
154 BC_FILTER_MAGIC_IP,
155 BC_FILTER_MAGIC_MAC,
156 };
157
158 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
159 {
160 /* arp */
161 .discard = 0,
162 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
163 .attrs = {
164 {
165 /* frame type - arp, hw type - ethernet */
166 .offset_type =
167 BCAST_FILTER_OFFSET_PAYLOAD_START,
168 .offset = sizeof(rfc1042_header),
169 .val = cpu_to_be32(0x08060001),
170 .mask = cpu_to_be32(0xffffffff),
171 },
172 {
173 /* arp dest ip */
174 .offset_type =
175 BCAST_FILTER_OFFSET_PAYLOAD_START,
176 .offset = sizeof(rfc1042_header) + 2 +
177 sizeof(struct arphdr) +
178 ETH_ALEN + sizeof(__be32) +
179 ETH_ALEN,
180 .mask = cpu_to_be32(0xffffffff),
181 /* mark it as special field */
182 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
183 },
184 },
185 },
186 {
187 /* dhcp offer bcast */
188 .discard = 0,
189 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
190 .attrs = {
191 {
192 /* udp dest port - 68 (bootp client)*/
193 .offset_type = BCAST_FILTER_OFFSET_IP_END,
194 .offset = offsetof(struct udphdr, dest),
195 .val = cpu_to_be32(0x00440000),
196 .mask = cpu_to_be32(0xffff0000),
197 },
198 {
199 /* dhcp - lsb bytes of client hw address */
200 .offset_type = BCAST_FILTER_OFFSET_IP_END,
201 .offset = 38,
202 .mask = cpu_to_be32(0xffffffff),
203 /* mark it as special field */
204 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
205 },
206 },
207 },
208 /* last filter must be empty */
209 {},
210 };
211 #endif
212
213 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
214 {
215 if (!iwl_mvm_is_d0i3_supported(mvm))
216 return;
217
218 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
219 spin_lock_bh(&mvm->refs_lock);
220 mvm->refs[ref_type]++;
221 spin_unlock_bh(&mvm->refs_lock);
222 iwl_trans_ref(mvm->trans);
223 }
224
225 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
226 {
227 if (!iwl_mvm_is_d0i3_supported(mvm))
228 return;
229
230 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
231 spin_lock_bh(&mvm->refs_lock);
232 WARN_ON(!mvm->refs[ref_type]--);
233 spin_unlock_bh(&mvm->refs_lock);
234 iwl_trans_unref(mvm->trans);
235 }
236
237 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
238 enum iwl_mvm_ref_type except_ref)
239 {
240 int i, j;
241
242 if (!iwl_mvm_is_d0i3_supported(mvm))
243 return;
244
245 spin_lock_bh(&mvm->refs_lock);
246 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
247 if (except_ref == i || !mvm->refs[i])
248 continue;
249
250 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
251 i, mvm->refs[i]);
252 for (j = 0; j < mvm->refs[i]; j++)
253 iwl_trans_unref(mvm->trans);
254 mvm->refs[i] = 0;
255 }
256 spin_unlock_bh(&mvm->refs_lock);
257 }
258
259 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
260 {
261 int i;
262 bool taken = false;
263
264 if (!iwl_mvm_is_d0i3_supported(mvm))
265 return true;
266
267 spin_lock_bh(&mvm->refs_lock);
268 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
269 if (mvm->refs[i]) {
270 taken = true;
271 break;
272 }
273 }
274 spin_unlock_bh(&mvm->refs_lock);
275
276 return taken;
277 }
278
279 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
280 {
281 iwl_mvm_ref(mvm, ref_type);
282
283 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
284 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
285 HZ)) {
286 WARN_ON_ONCE(1);
287 iwl_mvm_unref(mvm, ref_type);
288 return -EIO;
289 }
290
291 return 0;
292 }
293
294 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
295 {
296 int i;
297
298 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
299 for (i = 0; i < NUM_PHY_CTX; i++) {
300 mvm->phy_ctxts[i].id = i;
301 mvm->phy_ctxts[i].ref = 0;
302 }
303 }
304
305 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
306 const char *alpha2,
307 enum iwl_mcc_source src_id,
308 bool *changed)
309 {
310 struct ieee80211_regdomain *regd = NULL;
311 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
312 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
313 struct iwl_mcc_update_resp *resp;
314
315 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
316
317 lockdep_assert_held(&mvm->mutex);
318
319 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
320 if (IS_ERR_OR_NULL(resp)) {
321 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
322 PTR_RET(resp));
323 goto out;
324 }
325
326 if (changed)
327 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
328
329 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
330 __le32_to_cpu(resp->n_channels),
331 resp->channels,
332 __le16_to_cpu(resp->mcc));
333 /* Store the return source id */
334 src_id = resp->source_id;
335 kfree(resp);
336 if (IS_ERR_OR_NULL(regd)) {
337 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
338 PTR_RET(regd));
339 goto out;
340 }
341
342 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
343 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
344 mvm->lar_regdom_set = true;
345 mvm->mcc_src = src_id;
346
347 out:
348 return regd;
349 }
350
351 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
352 {
353 bool changed;
354 struct ieee80211_regdomain *regd;
355
356 if (!iwl_mvm_is_lar_supported(mvm))
357 return;
358
359 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
360 if (!IS_ERR_OR_NULL(regd)) {
361 /* only update the regulatory core if changed */
362 if (changed)
363 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
364
365 kfree(regd);
366 }
367 }
368
369 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
370 bool *changed)
371 {
372 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
373 iwl_mvm_is_wifi_mcc_supported(mvm) ?
374 MCC_SOURCE_GET_CURRENT :
375 MCC_SOURCE_OLD_FW, changed);
376 }
377
378 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
379 {
380 enum iwl_mcc_source used_src;
381 struct ieee80211_regdomain *regd;
382 int ret;
383 bool changed;
384 const struct ieee80211_regdomain *r =
385 rtnl_dereference(mvm->hw->wiphy->regd);
386
387 if (!r)
388 return -ENOENT;
389
390 /* save the last source in case we overwrite it below */
391 used_src = mvm->mcc_src;
392 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
393 /* Notify the firmware we support wifi location updates */
394 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
395 if (!IS_ERR_OR_NULL(regd))
396 kfree(regd);
397 }
398
399 /* Now set our last stored MCC and source */
400 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
401 &changed);
402 if (IS_ERR_OR_NULL(regd))
403 return -EIO;
404
405 /* update cfg80211 if the regdomain was changed */
406 if (changed)
407 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
408 else
409 ret = 0;
410
411 kfree(regd);
412 return ret;
413 }
414
415 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
416 {
417 struct ieee80211_hw *hw = mvm->hw;
418 int num_mac, ret, i;
419
420 /* Tell mac80211 our characteristics */
421 hw->flags = IEEE80211_HW_SIGNAL_DBM |
422 IEEE80211_HW_SPECTRUM_MGMT |
423 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
424 IEEE80211_HW_QUEUE_CONTROL |
425 IEEE80211_HW_WANT_MONITOR_VIF |
426 IEEE80211_HW_SUPPORTS_PS |
427 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
428 IEEE80211_HW_AMPDU_AGGREGATION |
429 IEEE80211_HW_TIMING_BEACON_ONLY |
430 IEEE80211_HW_CONNECTION_MONITOR |
431 IEEE80211_HW_CHANCTX_STA_CSA |
432 IEEE80211_HW_SUPPORTS_CLONED_SKBS;
433
434 hw->queues = mvm->first_agg_queue;
435 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
436 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
437 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
438 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
439 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
440 hw->rate_control_algorithm = "iwl-mvm-rs";
441 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
442 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
443
444 /*
445 * Enable 11w if advertised by firmware and software crypto
446 * is not enabled (as the firmware will interpret some mgmt
447 * packets, so enabling it with software crypto isn't safe)
448 */
449 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
450 !iwlwifi_mod_params.sw_crypto)
451 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
452
453 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
454 hw->wiphy->features |=
455 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
456 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
457
458 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
459 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
460 hw->chanctx_data_size = sizeof(u16);
461
462 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
463 BIT(NL80211_IFTYPE_P2P_CLIENT) |
464 BIT(NL80211_IFTYPE_AP) |
465 BIT(NL80211_IFTYPE_P2P_GO) |
466 BIT(NL80211_IFTYPE_P2P_DEVICE) |
467 BIT(NL80211_IFTYPE_ADHOC);
468
469 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
470 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
471 if (iwl_mvm_is_lar_supported(mvm))
472 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
473 else
474 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
475 REGULATORY_DISABLE_BEACON_HINTS;
476
477 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
478 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
479
480 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
481
482 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
483 hw->wiphy->n_iface_combinations =
484 ARRAY_SIZE(iwl_mvm_iface_combinations);
485
486 hw->wiphy->max_remain_on_channel_duration = 10000;
487 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
488 /* we can compensate an offset of up to 3 channels = 15 MHz */
489 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
490
491 /* Extract MAC address */
492 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
493 hw->wiphy->addresses = mvm->addresses;
494 hw->wiphy->n_addresses = 1;
495
496 /* Extract additional MAC addresses if available */
497 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
498 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
499
500 for (i = 1; i < num_mac; i++) {
501 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
502 ETH_ALEN);
503 mvm->addresses[i].addr[5]++;
504 hw->wiphy->n_addresses++;
505 }
506
507 iwl_mvm_reset_phy_ctxts(mvm);
508
509 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
510
511 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
512
513 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
514 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
515 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
516 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
517 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
518 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
519
520 if ((mvm->fw->ucode_capa.capa[0] &
521 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
522 (mvm->fw->ucode_capa.api[0] &
523 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
524 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
525 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
526 }
527
528 hw->wiphy->hw_version = mvm->trans->hw_id;
529
530 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
531 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
532 else
533 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
534
535 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
536 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
537 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
538 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
539 /* we create the 802.11 header and zero length SSID IE. */
540 hw->wiphy->max_sched_scan_ie_len =
541 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
542 }
543
544 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
545 NL80211_FEATURE_LOW_PRIORITY_SCAN |
546 NL80211_FEATURE_P2P_GO_OPPPS |
547 NL80211_FEATURE_DYNAMIC_SMPS |
548 NL80211_FEATURE_STATIC_SMPS |
549 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
550
551 if (mvm->fw->ucode_capa.capa[0] &
552 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
553 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
554 if (mvm->fw->ucode_capa.capa[0] &
555 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
556 hw->wiphy->features |= NL80211_FEATURE_QUIET;
557
558 if (mvm->fw->ucode_capa.capa[0] &
559 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
560 hw->wiphy->features |=
561 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
562
563 if (mvm->fw->ucode_capa.capa[0] &
564 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
565 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
566
567 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
568
569 /* currently FW API supports only one optional cipher scheme */
570 if (mvm->fw->cs[0].cipher) {
571 mvm->hw->n_cipher_schemes = 1;
572 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
573 }
574
575 #ifdef CONFIG_PM_SLEEP
576 if (iwl_mvm_is_d0i3_supported(mvm) &&
577 device_can_wakeup(mvm->trans->dev)) {
578 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
579 hw->wiphy->wowlan = &mvm->wowlan;
580 }
581
582 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
583 mvm->trans->ops->d3_suspend &&
584 mvm->trans->ops->d3_resume &&
585 device_can_wakeup(mvm->trans->dev)) {
586 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
587 WIPHY_WOWLAN_DISCONNECT |
588 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
589 WIPHY_WOWLAN_RFKILL_RELEASE |
590 WIPHY_WOWLAN_NET_DETECT;
591 if (!iwlwifi_mod_params.sw_crypto)
592 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
593 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
594 WIPHY_WOWLAN_4WAY_HANDSHAKE;
595
596 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
597 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
598 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
599 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
600 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
601 hw->wiphy->wowlan = &mvm->wowlan;
602 }
603 #endif
604
605 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
606 /* assign default bcast filtering configuration */
607 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
608 #endif
609
610 ret = iwl_mvm_leds_init(mvm);
611 if (ret)
612 return ret;
613
614 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
615 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
616 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
617 }
618
619 if (mvm->fw->ucode_capa.capa[0] &
620 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
621 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
622 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
623 }
624
625 ret = ieee80211_register_hw(mvm->hw);
626 if (ret)
627 iwl_mvm_leds_exit(mvm);
628
629 return ret;
630 }
631
632 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
633 struct ieee80211_sta *sta,
634 struct sk_buff *skb)
635 {
636 struct iwl_mvm_sta *mvmsta;
637 bool defer = false;
638
639 /*
640 * double check the IN_D0I3 flag both before and after
641 * taking the spinlock, in order to prevent taking
642 * the spinlock when not needed.
643 */
644 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
645 return false;
646
647 spin_lock(&mvm->d0i3_tx_lock);
648 /*
649 * testing the flag again ensures the skb dequeue
650 * loop (on d0i3 exit) hasn't run yet.
651 */
652 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
653 goto out;
654
655 mvmsta = iwl_mvm_sta_from_mac80211(sta);
656 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
657 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
658 goto out;
659
660 __skb_queue_tail(&mvm->d0i3_tx, skb);
661 ieee80211_stop_queues(mvm->hw);
662
663 /* trigger wakeup */
664 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
665 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
666
667 defer = true;
668 out:
669 spin_unlock(&mvm->d0i3_tx_lock);
670 return defer;
671 }
672
673 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
674 struct ieee80211_tx_control *control,
675 struct sk_buff *skb)
676 {
677 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
678 struct ieee80211_sta *sta = control->sta;
679 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
680 struct ieee80211_hdr *hdr = (void *)skb->data;
681
682 if (iwl_mvm_is_radio_killed(mvm)) {
683 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
684 goto drop;
685 }
686
687 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
688 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
689 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
690 goto drop;
691
692 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
693 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
694 ieee80211_is_mgmt(hdr->frame_control) &&
695 !ieee80211_is_deauth(hdr->frame_control) &&
696 !ieee80211_is_disassoc(hdr->frame_control) &&
697 !ieee80211_is_action(hdr->frame_control)))
698 sta = NULL;
699
700 if (sta) {
701 if (iwl_mvm_defer_tx(mvm, sta, skb))
702 return;
703 if (iwl_mvm_tx_skb(mvm, skb, sta))
704 goto drop;
705 return;
706 }
707
708 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
709 goto drop;
710 return;
711 drop:
712 ieee80211_free_txskb(hw, skb);
713 }
714
715 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
716 {
717 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
718 return false;
719 return true;
720 }
721
722 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
723 {
724 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
725 return false;
726 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
727 return true;
728
729 /* enabled by default */
730 return true;
731 }
732
733 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
734 struct ieee80211_vif *vif,
735 enum ieee80211_ampdu_mlme_action action,
736 struct ieee80211_sta *sta, u16 tid,
737 u16 *ssn, u8 buf_size)
738 {
739 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
740 int ret;
741 bool tx_agg_ref = false;
742
743 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
744 sta->addr, tid, action);
745
746 if (!(mvm->nvm_data->sku_cap_11n_enable))
747 return -EACCES;
748
749 /* return from D0i3 before starting a new Tx aggregation */
750 switch (action) {
751 case IEEE80211_AMPDU_TX_START:
752 case IEEE80211_AMPDU_TX_STOP_CONT:
753 case IEEE80211_AMPDU_TX_STOP_FLUSH:
754 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
755 case IEEE80211_AMPDU_TX_OPERATIONAL:
756 /*
757 * for tx start, wait synchronously until D0i3 exit to
758 * get the correct sequence number for the tid.
759 * additionally, some other ampdu actions use direct
760 * target access, which is not handled automatically
761 * by the trans layer (unlike commands), so wait for
762 * d0i3 exit in these cases as well.
763 */
764 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
765 if (ret)
766 return ret;
767
768 tx_agg_ref = true;
769 break;
770 default:
771 break;
772 }
773
774 mutex_lock(&mvm->mutex);
775
776 switch (action) {
777 case IEEE80211_AMPDU_RX_START:
778 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
779 ret = -EINVAL;
780 break;
781 }
782 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
783 break;
784 case IEEE80211_AMPDU_RX_STOP:
785 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
786 break;
787 case IEEE80211_AMPDU_TX_START:
788 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
789 ret = -EINVAL;
790 break;
791 }
792 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
793 break;
794 case IEEE80211_AMPDU_TX_STOP_CONT:
795 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
796 break;
797 case IEEE80211_AMPDU_TX_STOP_FLUSH:
798 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
799 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
800 break;
801 case IEEE80211_AMPDU_TX_OPERATIONAL:
802 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
803 break;
804 default:
805 WARN_ON_ONCE(1);
806 ret = -EINVAL;
807 break;
808 }
809 mutex_unlock(&mvm->mutex);
810
811 /*
812 * If the tid is marked as started, we won't use it for offloaded
813 * traffic on the next D0i3 entry. It's safe to unref.
814 */
815 if (tx_agg_ref)
816 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
817
818 return ret;
819 }
820
821 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
822 struct ieee80211_vif *vif)
823 {
824 struct iwl_mvm *mvm = data;
825 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
826
827 mvmvif->uploaded = false;
828 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
829
830 spin_lock_bh(&mvm->time_event_lock);
831 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
832 spin_unlock_bh(&mvm->time_event_lock);
833
834 mvmvif->phy_ctxt = NULL;
835 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
836 }
837
838 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
839 const void *data, size_t datalen)
840 {
841 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
842 ssize_t bytes_read;
843 ssize_t bytes_read_trans;
844
845 if (offset < dump_ptrs->op_mode_len) {
846 bytes_read = min_t(ssize_t, count,
847 dump_ptrs->op_mode_len - offset);
848 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
849 bytes_read);
850 offset += bytes_read;
851 count -= bytes_read;
852
853 if (count == 0)
854 return bytes_read;
855 } else {
856 bytes_read = 0;
857 }
858
859 if (!dump_ptrs->trans_ptr)
860 return bytes_read;
861
862 offset -= dump_ptrs->op_mode_len;
863 bytes_read_trans = min_t(ssize_t, count,
864 dump_ptrs->trans_ptr->len - offset);
865 memcpy(buffer + bytes_read,
866 (u8 *)dump_ptrs->trans_ptr->data + offset,
867 bytes_read_trans);
868
869 return bytes_read + bytes_read_trans;
870 }
871
872 static void iwl_mvm_free_coredump(const void *data)
873 {
874 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
875
876 vfree(fw_error_dump->op_mode_ptr);
877 vfree(fw_error_dump->trans_ptr);
878 kfree(fw_error_dump);
879 }
880
881 static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
882 struct iwl_fw_error_dump_data **dump_data)
883 {
884 struct iwl_fw_error_dump_fifo *fifo_hdr;
885 u32 *fifo_data;
886 u32 fifo_len;
887 unsigned long flags;
888 int i, j;
889
890 if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
891 return;
892
893 /* Pull RXF data from all RXFs */
894 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
895 /*
896 * Keep aside the additional offset that might be needed for
897 * next RXF
898 */
899 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
900
901 fifo_hdr = (void *)(*dump_data)->data;
902 fifo_data = (void *)fifo_hdr->data;
903 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
904
905 /* No need to try to read the data if the length is 0 */
906 if (fifo_len == 0)
907 continue;
908
909 /* Add a TLV for the RXF */
910 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
911 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
912
913 fifo_hdr->fifo_num = cpu_to_le32(i);
914 fifo_hdr->available_bytes =
915 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
916 RXF_RD_D_SPACE +
917 offset_diff));
918 fifo_hdr->wr_ptr =
919 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
920 RXF_RD_WR_PTR +
921 offset_diff));
922 fifo_hdr->rd_ptr =
923 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
924 RXF_RD_RD_PTR +
925 offset_diff));
926 fifo_hdr->fence_ptr =
927 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
928 RXF_RD_FENCE_PTR +
929 offset_diff));
930 fifo_hdr->fence_mode =
931 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
932 RXF_SET_FENCE_MODE +
933 offset_diff));
934
935 /* Lock fence */
936 iwl_trans_write_prph(mvm->trans,
937 RXF_SET_FENCE_MODE + offset_diff, 0x1);
938 /* Set fence pointer to the same place like WR pointer */
939 iwl_trans_write_prph(mvm->trans,
940 RXF_LD_WR2FENCE + offset_diff, 0x1);
941 /* Set fence offset */
942 iwl_trans_write_prph(mvm->trans,
943 RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
944 0x0);
945
946 /* Read FIFO */
947 fifo_len /= sizeof(u32); /* Size in DWORDS */
948 for (j = 0; j < fifo_len; j++)
949 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
950 RXF_FIFO_RD_FENCE_INC +
951 offset_diff);
952 *dump_data = iwl_fw_error_next_data(*dump_data);
953 }
954
955 /* Pull TXF data from all TXFs */
956 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
957 /* Mark the number of TXF we're pulling now */
958 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
959
960 fifo_hdr = (void *)(*dump_data)->data;
961 fifo_data = (void *)fifo_hdr->data;
962 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
963
964 /* No need to try to read the data if the length is 0 */
965 if (fifo_len == 0)
966 continue;
967
968 /* Add a TLV for the FIFO */
969 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
970 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
971
972 fifo_hdr->fifo_num = cpu_to_le32(i);
973 fifo_hdr->available_bytes =
974 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
975 TXF_FIFO_ITEM_CNT));
976 fifo_hdr->wr_ptr =
977 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
978 TXF_WR_PTR));
979 fifo_hdr->rd_ptr =
980 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
981 TXF_RD_PTR));
982 fifo_hdr->fence_ptr =
983 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
984 TXF_FENCE_PTR));
985 fifo_hdr->fence_mode =
986 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
987 TXF_LOCK_FENCE));
988
989 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
990 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
991 TXF_WR_PTR);
992
993 /* Dummy-read to advance the read pointer to the head */
994 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
995
996 /* Read FIFO */
997 fifo_len /= sizeof(u32); /* Size in DWORDS */
998 for (j = 0; j < fifo_len; j++)
999 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
1000 TXF_READ_MODIFY_DATA);
1001 *dump_data = iwl_fw_error_next_data(*dump_data);
1002 }
1003
1004 iwl_trans_release_nic_access(mvm->trans, &flags);
1005 }
1006
1007 void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
1008 {
1009 if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert ||
1010 !mvm->fw_dump_desc)
1011 return;
1012
1013 kfree(mvm->fw_dump_desc);
1014 mvm->fw_dump_desc = NULL;
1015 }
1016
1017 #define IWL8260_ICCM_OFFSET 0x44000 /* Only for B-step */
1018 #define IWL8260_ICCM_LEN 0xC000 /* Only for B-step */
1019
1020 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
1021 {
1022 struct iwl_fw_error_dump_file *dump_file;
1023 struct iwl_fw_error_dump_data *dump_data;
1024 struct iwl_fw_error_dump_info *dump_info;
1025 struct iwl_fw_error_dump_mem *dump_mem;
1026 struct iwl_fw_error_dump_trigger_desc *dump_trig;
1027 struct iwl_mvm_dump_ptrs *fw_error_dump;
1028 u32 sram_len, sram_ofs;
1029 u32 file_len, fifo_data_len = 0;
1030 u32 smem_len = mvm->cfg->smem_len;
1031 u32 sram2_len = mvm->cfg->dccm2_len;
1032
1033 lockdep_assert_held(&mvm->mutex);
1034
1035 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
1036 if (!fw_error_dump)
1037 return;
1038
1039 /* SRAM - include stack CCM if driver knows the values for it */
1040 if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
1041 const struct fw_img *img;
1042
1043 img = &mvm->fw->img[mvm->cur_ucode];
1044 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1045 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
1046 } else {
1047 sram_ofs = mvm->cfg->dccm_offset;
1048 sram_len = mvm->cfg->dccm_len;
1049 }
1050
1051 /* reading RXF/TXF sizes */
1052 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
1053 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
1054 int i;
1055
1056 fifo_data_len = 0;
1057
1058 /* Count RXF size */
1059 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
1060 if (!mem_cfg->rxfifo_size[i])
1061 continue;
1062
1063 /* Add header info */
1064 fifo_data_len += mem_cfg->rxfifo_size[i] +
1065 sizeof(*dump_data) +
1066 sizeof(struct iwl_fw_error_dump_fifo);
1067 }
1068
1069 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
1070 if (!mem_cfg->txfifo_size[i])
1071 continue;
1072
1073 /* Add header info */
1074 fifo_data_len += mem_cfg->txfifo_size[i] +
1075 sizeof(*dump_data) +
1076 sizeof(struct iwl_fw_error_dump_fifo);
1077 }
1078 }
1079
1080 file_len = sizeof(*dump_file) +
1081 sizeof(*dump_data) * 2 +
1082 sram_len + sizeof(*dump_mem) +
1083 fifo_data_len +
1084 sizeof(*dump_info);
1085
1086 /*
1087 * In 8000 HW family B-step include the ICCM (which resides separately)
1088 */
1089 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1090 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP)
1091 file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
1092 IWL8260_ICCM_LEN;
1093
1094 if (mvm->fw_dump_desc)
1095 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
1096 mvm->fw_dump_desc->len;
1097
1098 /* Make room for the SMEM, if it exists */
1099 if (smem_len)
1100 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
1101
1102 /* Make room for the secondary SRAM, if it exists */
1103 if (sram2_len)
1104 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
1105
1106 dump_file = vzalloc(file_len);
1107 if (!dump_file) {
1108 kfree(fw_error_dump);
1109 iwl_mvm_free_fw_dump_desc(mvm);
1110 return;
1111 }
1112
1113 fw_error_dump->op_mode_ptr = dump_file;
1114
1115 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
1116 dump_data = (void *)dump_file->data;
1117
1118 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
1119 dump_data->len = cpu_to_le32(sizeof(*dump_info));
1120 dump_info = (void *) dump_data->data;
1121 dump_info->device_family =
1122 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
1123 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
1124 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
1125 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
1126 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
1127 sizeof(dump_info->fw_human_readable));
1128 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1129 sizeof(dump_info->dev_human_readable));
1130 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1131 sizeof(dump_info->bus_human_readable));
1132
1133 dump_data = iwl_fw_error_next_data(dump_data);
1134 /* We only dump the FIFOs if the FW is in error state */
1135 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1136 iwl_mvm_dump_fifos(mvm, &dump_data);
1137
1138 if (mvm->fw_dump_desc) {
1139 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
1140 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
1141 mvm->fw_dump_desc->len);
1142 dump_trig = (void *)dump_data->data;
1143 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
1144 sizeof(*dump_trig) + mvm->fw_dump_desc->len);
1145
1146 /* now we can free this copy */
1147 iwl_mvm_free_fw_dump_desc(mvm);
1148 dump_data = iwl_fw_error_next_data(dump_data);
1149 }
1150
1151 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1152 dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1153 dump_mem = (void *)dump_data->data;
1154 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1155 dump_mem->offset = cpu_to_le32(sram_ofs);
1156 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
1157 sram_len);
1158
1159 if (smem_len) {
1160 dump_data = iwl_fw_error_next_data(dump_data);
1161 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1162 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1163 dump_mem = (void *)dump_data->data;
1164 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1165 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
1166 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
1167 dump_mem->data, smem_len);
1168 }
1169
1170 if (sram2_len) {
1171 dump_data = iwl_fw_error_next_data(dump_data);
1172 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1173 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1174 dump_mem = (void *)dump_data->data;
1175 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1176 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1177 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1178 dump_mem->data, sram2_len);
1179 }
1180
1181 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1182 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) {
1183 dump_data = iwl_fw_error_next_data(dump_data);
1184 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1185 dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN +
1186 sizeof(*dump_mem));
1187 dump_mem = (void *)dump_data->data;
1188 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1189 dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET);
1190 iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET,
1191 dump_mem->data, IWL8260_ICCM_LEN);
1192 }
1193
1194 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
1195 fw_error_dump->op_mode_len = file_len;
1196 if (fw_error_dump->trans_ptr)
1197 file_len += fw_error_dump->trans_ptr->len;
1198 dump_file->file_len = cpu_to_le32(file_len);
1199
1200 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1201 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
1202
1203 clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
1204 }
1205
1206 struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
1207 .trig_desc = {
1208 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
1209 },
1210 };
1211
1212 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1213 {
1214 /* clear the D3 reconfig, we only need it to avoid dumping a
1215 * firmware coredump on reconfiguration, we shouldn't do that
1216 * on D3->D0 transition
1217 */
1218 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1219 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1220 iwl_mvm_fw_error_dump(mvm);
1221 }
1222
1223 /* cleanup all stale references (scan, roc), but keep the
1224 * ucode_down ref until reconfig is complete
1225 */
1226 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1227
1228 iwl_trans_stop_device(mvm->trans);
1229
1230 mvm->scan_status = IWL_MVM_SCAN_NONE;
1231 mvm->ps_disabled = false;
1232 mvm->calibrating = false;
1233
1234 /* just in case one was running */
1235 ieee80211_remain_on_channel_expired(mvm->hw);
1236
1237 ieee80211_iterate_active_interfaces_atomic(
1238 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1239 iwl_mvm_cleanup_iterator, mvm);
1240
1241 mvm->p2p_device_vif = NULL;
1242 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1243
1244 iwl_mvm_reset_phy_ctxts(mvm);
1245 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1246 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1247 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1248 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1249 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1250 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1251 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1252 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1253 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1254
1255 ieee80211_wake_queues(mvm->hw);
1256
1257 /* clear any stale d0i3 state */
1258 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1259
1260 mvm->vif_count = 0;
1261 mvm->rx_ba_sessions = 0;
1262 mvm->fw_dbg_conf = FW_DBG_INVALID;
1263
1264 /* keep statistics ticking */
1265 iwl_mvm_accu_radio_stats(mvm);
1266 }
1267
1268 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1269 {
1270 int ret;
1271
1272 lockdep_assert_held(&mvm->mutex);
1273
1274 /* Clean up some internal and mac80211 state on restart */
1275 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1276 iwl_mvm_restart_cleanup(mvm);
1277
1278 ret = iwl_mvm_up(mvm);
1279
1280 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1281 /* Something went wrong - we need to finish some cleanup
1282 * that normally iwl_mvm_mac_restart_complete() below
1283 * would do.
1284 */
1285 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1286 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1287 }
1288
1289 return ret;
1290 }
1291
1292 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1293 {
1294 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1295 int ret;
1296
1297 /* Some hw restart cleanups must not hold the mutex */
1298 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1299 /*
1300 * Make sure we are out of d0i3. This is needed
1301 * to make sure the reference accounting is correct
1302 * (and there is no stale d0i3_exit_work).
1303 */
1304 wait_event_timeout(mvm->d0i3_exit_waitq,
1305 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1306 &mvm->status),
1307 HZ);
1308 }
1309
1310 mutex_lock(&mvm->mutex);
1311 ret = __iwl_mvm_mac_start(mvm);
1312 mutex_unlock(&mvm->mutex);
1313
1314 return ret;
1315 }
1316
1317 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1318 {
1319 int ret;
1320
1321 mutex_lock(&mvm->mutex);
1322
1323 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1324 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1325 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1326 if (ret)
1327 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1328 ret);
1329
1330 /* allow transport/FW low power modes */
1331 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1332
1333 /*
1334 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1335 * of packets the FW sent out, so we must reconnect.
1336 */
1337 iwl_mvm_teardown_tdls_peers(mvm);
1338
1339 mutex_unlock(&mvm->mutex);
1340 }
1341
1342 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1343 {
1344 bool exit_now;
1345
1346 if (!iwl_mvm_is_d0i3_supported(mvm))
1347 return;
1348
1349 mutex_lock(&mvm->d0i3_suspend_mutex);
1350 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1351 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1352 &mvm->d0i3_suspend_flags);
1353 mutex_unlock(&mvm->d0i3_suspend_mutex);
1354
1355 if (exit_now) {
1356 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1357 _iwl_mvm_exit_d0i3(mvm);
1358 }
1359
1360 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1361 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1362 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1363 &mvm->status),
1364 HZ))
1365 WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1366 }
1367
1368 static void
1369 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1370 enum ieee80211_reconfig_type reconfig_type)
1371 {
1372 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1373
1374 switch (reconfig_type) {
1375 case IEEE80211_RECONFIG_TYPE_RESTART:
1376 iwl_mvm_restart_complete(mvm);
1377 break;
1378 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1379 iwl_mvm_resume_complete(mvm);
1380 break;
1381 }
1382 }
1383
1384 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1385 {
1386 lockdep_assert_held(&mvm->mutex);
1387
1388 /* firmware counters are obviously reset now, but we shouldn't
1389 * partially track so also clear the fw_reset_accu counters.
1390 */
1391 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1392
1393 /*
1394 * Disallow low power states when the FW is down by taking
1395 * the UCODE_DOWN ref. in case of ongoing hw restart the
1396 * ref is already taken, so don't take it again.
1397 */
1398 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1399 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1400
1401 /* async_handlers_wk is now blocked */
1402
1403 /*
1404 * The work item could be running or queued if the
1405 * ROC time event stops just as we get here.
1406 */
1407 cancel_work_sync(&mvm->roc_done_wk);
1408
1409 iwl_trans_stop_device(mvm->trans);
1410
1411 iwl_mvm_async_handlers_purge(mvm);
1412 /* async_handlers_list is empty and will stay empty: HW is stopped */
1413
1414 /* the fw is stopped, the aux sta is dead: clean up driver state */
1415 iwl_mvm_del_aux_sta(mvm);
1416
1417 /*
1418 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1419 * won't be called in this case).
1420 */
1421 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1422
1423 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1424 * make sure there's nothing left there and warn if any is found.
1425 */
1426 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
1427 int i;
1428
1429 for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++) {
1430 if (WARN_ONCE(mvm->scan_uid[i],
1431 "UMAC scan UID %d was not cleaned\n",
1432 mvm->scan_uid[i]))
1433 mvm->scan_uid[i] = 0;
1434 }
1435 }
1436
1437 mvm->ucode_loaded = false;
1438 }
1439
1440 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1441 {
1442 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1443
1444 flush_work(&mvm->d0i3_exit_work);
1445 flush_work(&mvm->async_handlers_wk);
1446 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1447 iwl_mvm_free_fw_dump_desc(mvm);
1448
1449 mutex_lock(&mvm->mutex);
1450 __iwl_mvm_mac_stop(mvm);
1451 mutex_unlock(&mvm->mutex);
1452
1453 /*
1454 * The worker might have been waiting for the mutex, let it run and
1455 * discover that its list is now empty.
1456 */
1457 cancel_work_sync(&mvm->async_handlers_wk);
1458 }
1459
1460 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1461 {
1462 u16 i;
1463
1464 lockdep_assert_held(&mvm->mutex);
1465
1466 for (i = 0; i < NUM_PHY_CTX; i++)
1467 if (!mvm->phy_ctxts[i].ref)
1468 return &mvm->phy_ctxts[i];
1469
1470 IWL_ERR(mvm, "No available PHY context\n");
1471 return NULL;
1472 }
1473
1474 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1475 s8 tx_power)
1476 {
1477 /* FW is in charge of regulatory enforcement */
1478 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1479 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1480 .pwr_restriction = cpu_to_le16(tx_power),
1481 };
1482
1483 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1484 sizeof(reduce_txpwr_cmd),
1485 &reduce_txpwr_cmd);
1486 }
1487
1488 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1489 struct ieee80211_vif *vif)
1490 {
1491 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1492 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1493 int ret;
1494
1495 mvmvif->mvm = mvm;
1496
1497 /*
1498 * make sure D0i3 exit is completed, otherwise a target access
1499 * during tx queue configuration could be done when still in
1500 * D0i3 state.
1501 */
1502 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1503 if (ret)
1504 return ret;
1505
1506 /*
1507 * Not much to do here. The stack will not allow interface
1508 * types or combinations that we didn't advertise, so we
1509 * don't really have to check the types.
1510 */
1511
1512 mutex_lock(&mvm->mutex);
1513
1514 /* make sure that beacon statistics don't go backwards with FW reset */
1515 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1516 mvmvif->beacon_stats.accu_num_beacons +=
1517 mvmvif->beacon_stats.num_beacons;
1518
1519 /* Allocate resources for the MAC context, and add it to the fw */
1520 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1521 if (ret)
1522 goto out_unlock;
1523
1524 /* Counting number of interfaces is needed for legacy PM */
1525 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1526 mvm->vif_count++;
1527
1528 /*
1529 * The AP binding flow can be done only after the beacon
1530 * template is configured (which happens only in the mac80211
1531 * start_ap() flow), and adding the broadcast station can happen
1532 * only after the binding.
1533 * In addition, since modifying the MAC before adding a bcast
1534 * station is not allowed by the FW, delay the adding of MAC context to
1535 * the point where we can also add the bcast station.
1536 * In short: there's not much we can do at this point, other than
1537 * allocating resources :)
1538 */
1539 if (vif->type == NL80211_IFTYPE_AP ||
1540 vif->type == NL80211_IFTYPE_ADHOC) {
1541 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1542 if (ret) {
1543 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1544 goto out_release;
1545 }
1546
1547 iwl_mvm_vif_dbgfs_register(mvm, vif);
1548 goto out_unlock;
1549 }
1550
1551 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1552 if (ret)
1553 goto out_release;
1554
1555 ret = iwl_mvm_power_update_mac(mvm);
1556 if (ret)
1557 goto out_remove_mac;
1558
1559 /* beacon filtering */
1560 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1561 if (ret)
1562 goto out_remove_mac;
1563
1564 if (!mvm->bf_allowed_vif &&
1565 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1566 mvm->bf_allowed_vif = mvmvif;
1567 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1568 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1569 }
1570
1571 /*
1572 * P2P_DEVICE interface does not have a channel context assigned to it,
1573 * so a dedicated PHY context is allocated to it and the corresponding
1574 * MAC context is bound to it at this stage.
1575 */
1576 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1577
1578 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1579 if (!mvmvif->phy_ctxt) {
1580 ret = -ENOSPC;
1581 goto out_free_bf;
1582 }
1583
1584 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1585 ret = iwl_mvm_binding_add_vif(mvm, vif);
1586 if (ret)
1587 goto out_unref_phy;
1588
1589 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1590 if (ret)
1591 goto out_unbind;
1592
1593 /* Save a pointer to p2p device vif, so it can later be used to
1594 * update the p2p device MAC when a GO is started/stopped */
1595 mvm->p2p_device_vif = vif;
1596 }
1597
1598 iwl_mvm_vif_dbgfs_register(mvm, vif);
1599 goto out_unlock;
1600
1601 out_unbind:
1602 iwl_mvm_binding_remove_vif(mvm, vif);
1603 out_unref_phy:
1604 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1605 out_free_bf:
1606 if (mvm->bf_allowed_vif == mvmvif) {
1607 mvm->bf_allowed_vif = NULL;
1608 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1609 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1610 }
1611 out_remove_mac:
1612 mvmvif->phy_ctxt = NULL;
1613 iwl_mvm_mac_ctxt_remove(mvm, vif);
1614 out_release:
1615 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1616 mvm->vif_count--;
1617
1618 iwl_mvm_mac_ctxt_release(mvm, vif);
1619 out_unlock:
1620 mutex_unlock(&mvm->mutex);
1621
1622 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1623
1624 return ret;
1625 }
1626
1627 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1628 struct ieee80211_vif *vif)
1629 {
1630 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1631
1632 if (tfd_msk) {
1633 /*
1634 * mac80211 first removes all the stations of the vif and
1635 * then removes the vif. When it removes a station it also
1636 * flushes the AMPDU session. So by now, all the AMPDU sessions
1637 * of all the stations of this vif are closed, and the queues
1638 * of these AMPDU sessions are properly closed.
1639 * We still need to take care of the shared queues of the vif.
1640 * Flush them here.
1641 */
1642 mutex_lock(&mvm->mutex);
1643 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1644 mutex_unlock(&mvm->mutex);
1645
1646 /*
1647 * There are transports that buffer a few frames in the host.
1648 * For these, the flush above isn't enough since while we were
1649 * flushing, the transport might have sent more frames to the
1650 * device. To solve this, wait here until the transport is
1651 * empty. Technically, this could have replaced the flush
1652 * above, but flush is much faster than draining. So flush
1653 * first, and drain to make sure we have no frames in the
1654 * transport anymore.
1655 * If a station still had frames on the shared queues, it is
1656 * already marked as draining, so to complete the draining, we
1657 * just need to wait until the transport is empty.
1658 */
1659 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1660 }
1661
1662 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1663 /*
1664 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1665 * We assume here that all the packets sent to the OFFCHANNEL
1666 * queue are sent in ROC session.
1667 */
1668 flush_work(&mvm->roc_done_wk);
1669 } else {
1670 /*
1671 * By now, all the AC queues are empty. The AGG queues are
1672 * empty too. We already got all the Tx responses for all the
1673 * packets in the queues. The drain work can have been
1674 * triggered. Flush it.
1675 */
1676 flush_work(&mvm->sta_drained_wk);
1677 }
1678 }
1679
1680 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1681 struct ieee80211_vif *vif)
1682 {
1683 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1684 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1685
1686 iwl_mvm_prepare_mac_removal(mvm, vif);
1687
1688 mutex_lock(&mvm->mutex);
1689
1690 if (mvm->bf_allowed_vif == mvmvif) {
1691 mvm->bf_allowed_vif = NULL;
1692 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1693 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1694 }
1695
1696 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1697
1698 /*
1699 * For AP/GO interface, the tear down of the resources allocated to the
1700 * interface is be handled as part of the stop_ap flow.
1701 */
1702 if (vif->type == NL80211_IFTYPE_AP ||
1703 vif->type == NL80211_IFTYPE_ADHOC) {
1704 #ifdef CONFIG_NL80211_TESTMODE
1705 if (vif == mvm->noa_vif) {
1706 mvm->noa_vif = NULL;
1707 mvm->noa_duration = 0;
1708 }
1709 #endif
1710 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1711 goto out_release;
1712 }
1713
1714 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1715 mvm->p2p_device_vif = NULL;
1716 iwl_mvm_rm_bcast_sta(mvm, vif);
1717 iwl_mvm_binding_remove_vif(mvm, vif);
1718 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1719 mvmvif->phy_ctxt = NULL;
1720 }
1721
1722 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1723 mvm->vif_count--;
1724
1725 iwl_mvm_power_update_mac(mvm);
1726 iwl_mvm_mac_ctxt_remove(mvm, vif);
1727
1728 out_release:
1729 iwl_mvm_mac_ctxt_release(mvm, vif);
1730 mutex_unlock(&mvm->mutex);
1731 }
1732
1733 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1734 {
1735 return 0;
1736 }
1737
1738 struct iwl_mvm_mc_iter_data {
1739 struct iwl_mvm *mvm;
1740 int port_id;
1741 };
1742
1743 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1744 struct ieee80211_vif *vif)
1745 {
1746 struct iwl_mvm_mc_iter_data *data = _data;
1747 struct iwl_mvm *mvm = data->mvm;
1748 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1749 int ret, len;
1750
1751 /* if we don't have free ports, mcast frames will be dropped */
1752 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1753 return;
1754
1755 if (vif->type != NL80211_IFTYPE_STATION ||
1756 !vif->bss_conf.assoc)
1757 return;
1758
1759 cmd->port_id = data->port_id++;
1760 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1761 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1762
1763 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1764 if (ret)
1765 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1766 }
1767
1768 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1769 {
1770 struct iwl_mvm_mc_iter_data iter_data = {
1771 .mvm = mvm,
1772 };
1773
1774 lockdep_assert_held(&mvm->mutex);
1775
1776 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1777 return;
1778
1779 ieee80211_iterate_active_interfaces_atomic(
1780 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1781 iwl_mvm_mc_iface_iterator, &iter_data);
1782 }
1783
1784 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1785 struct netdev_hw_addr_list *mc_list)
1786 {
1787 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1788 struct iwl_mcast_filter_cmd *cmd;
1789 struct netdev_hw_addr *addr;
1790 int addr_count;
1791 bool pass_all;
1792 int len;
1793
1794 addr_count = netdev_hw_addr_list_count(mc_list);
1795 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1796 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1797 if (pass_all)
1798 addr_count = 0;
1799
1800 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1801 cmd = kzalloc(len, GFP_ATOMIC);
1802 if (!cmd)
1803 return 0;
1804
1805 if (pass_all) {
1806 cmd->pass_all = 1;
1807 return (u64)(unsigned long)cmd;
1808 }
1809
1810 netdev_hw_addr_list_for_each(addr, mc_list) {
1811 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1812 cmd->count, addr->addr);
1813 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1814 addr->addr, ETH_ALEN);
1815 cmd->count++;
1816 }
1817
1818 return (u64)(unsigned long)cmd;
1819 }
1820
1821 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1822 unsigned int changed_flags,
1823 unsigned int *total_flags,
1824 u64 multicast)
1825 {
1826 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1827 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1828
1829 mutex_lock(&mvm->mutex);
1830
1831 /* replace previous configuration */
1832 kfree(mvm->mcast_filter_cmd);
1833 mvm->mcast_filter_cmd = cmd;
1834
1835 if (!cmd)
1836 goto out;
1837
1838 iwl_mvm_recalc_multicast(mvm);
1839 out:
1840 mutex_unlock(&mvm->mutex);
1841 *total_flags = 0;
1842 }
1843
1844 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1845 struct iwl_bcast_iter_data {
1846 struct iwl_mvm *mvm;
1847 struct iwl_bcast_filter_cmd *cmd;
1848 u8 current_filter;
1849 };
1850
1851 static void
1852 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1853 const struct iwl_fw_bcast_filter *in_filter,
1854 struct iwl_fw_bcast_filter *out_filter)
1855 {
1856 struct iwl_fw_bcast_filter_attr *attr;
1857 int i;
1858
1859 memcpy(out_filter, in_filter, sizeof(*out_filter));
1860
1861 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1862 attr = &out_filter->attrs[i];
1863
1864 if (!attr->mask)
1865 break;
1866
1867 switch (attr->reserved1) {
1868 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1869 if (vif->bss_conf.arp_addr_cnt != 1) {
1870 attr->mask = 0;
1871 continue;
1872 }
1873
1874 attr->val = vif->bss_conf.arp_addr_list[0];
1875 break;
1876 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1877 attr->val = *(__be32 *)&vif->addr[2];
1878 break;
1879 default:
1880 break;
1881 }
1882 attr->reserved1 = 0;
1883 out_filter->num_attrs++;
1884 }
1885 }
1886
1887 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1888 struct ieee80211_vif *vif)
1889 {
1890 struct iwl_bcast_iter_data *data = _data;
1891 struct iwl_mvm *mvm = data->mvm;
1892 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1893 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1894 struct iwl_fw_bcast_mac *bcast_mac;
1895 int i;
1896
1897 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1898 return;
1899
1900 bcast_mac = &cmd->macs[mvmvif->id];
1901
1902 /*
1903 * enable filtering only for associated stations, but not for P2P
1904 * Clients
1905 */
1906 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1907 !vif->bss_conf.assoc)
1908 return;
1909
1910 bcast_mac->default_discard = 1;
1911
1912 /* copy all configured filters */
1913 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1914 /*
1915 * Make sure we don't exceed our filters limit.
1916 * if there is still a valid filter to be configured,
1917 * be on the safe side and just allow bcast for this mac.
1918 */
1919 if (WARN_ON_ONCE(data->current_filter >=
1920 ARRAY_SIZE(cmd->filters))) {
1921 bcast_mac->default_discard = 0;
1922 bcast_mac->attached_filters = 0;
1923 break;
1924 }
1925
1926 iwl_mvm_set_bcast_filter(vif,
1927 &mvm->bcast_filters[i],
1928 &cmd->filters[data->current_filter]);
1929
1930 /* skip current filter if it contains no attributes */
1931 if (!cmd->filters[data->current_filter].num_attrs)
1932 continue;
1933
1934 /* attach the filter to current mac */
1935 bcast_mac->attached_filters |=
1936 cpu_to_le16(BIT(data->current_filter));
1937
1938 data->current_filter++;
1939 }
1940 }
1941
1942 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1943 struct iwl_bcast_filter_cmd *cmd)
1944 {
1945 struct iwl_bcast_iter_data iter_data = {
1946 .mvm = mvm,
1947 .cmd = cmd,
1948 };
1949
1950 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1951 return false;
1952
1953 memset(cmd, 0, sizeof(*cmd));
1954 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1955 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1956
1957 #ifdef CONFIG_IWLWIFI_DEBUGFS
1958 /* use debugfs filters/macs if override is configured */
1959 if (mvm->dbgfs_bcast_filtering.override) {
1960 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1961 sizeof(cmd->filters));
1962 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1963 sizeof(cmd->macs));
1964 return true;
1965 }
1966 #endif
1967
1968 /* if no filters are configured, do nothing */
1969 if (!mvm->bcast_filters)
1970 return false;
1971
1972 /* configure and attach these filters for each associated sta vif */
1973 ieee80211_iterate_active_interfaces(
1974 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1975 iwl_mvm_bcast_filter_iterator, &iter_data);
1976
1977 return true;
1978 }
1979 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1980 struct ieee80211_vif *vif)
1981 {
1982 struct iwl_bcast_filter_cmd cmd;
1983
1984 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1985 return 0;
1986
1987 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1988 return 0;
1989
1990 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1991 sizeof(cmd), &cmd);
1992 }
1993 #else
1994 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1995 struct ieee80211_vif *vif)
1996 {
1997 return 0;
1998 }
1999 #endif
2000
2001 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2002 struct ieee80211_vif *vif,
2003 struct ieee80211_bss_conf *bss_conf,
2004 u32 changes)
2005 {
2006 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2007 int ret;
2008
2009 /*
2010 * Re-calculate the tsf id, as the master-slave relations depend on the
2011 * beacon interval, which was not known when the station interface was
2012 * added.
2013 */
2014 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
2015 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2016
2017 /*
2018 * If we're not associated yet, take the (new) BSSID before associating
2019 * so the firmware knows. If we're already associated, then use the old
2020 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2021 * branch for disassociation below.
2022 */
2023 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2024 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2025
2026 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2027 if (ret)
2028 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2029
2030 /* after sending it once, adopt mac80211 data */
2031 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2032 mvmvif->associated = bss_conf->assoc;
2033
2034 if (changes & BSS_CHANGED_ASSOC) {
2035 if (bss_conf->assoc) {
2036 /* clear statistics to get clean beacon counter */
2037 iwl_mvm_request_statistics(mvm, true);
2038 memset(&mvmvif->beacon_stats, 0,
2039 sizeof(mvmvif->beacon_stats));
2040
2041 /* add quota for this interface */
2042 ret = iwl_mvm_update_quotas(mvm, true, NULL);
2043 if (ret) {
2044 IWL_ERR(mvm, "failed to update quotas\n");
2045 return;
2046 }
2047
2048 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2049 &mvm->status)) {
2050 /*
2051 * If we're restarting then the firmware will
2052 * obviously have lost synchronisation with
2053 * the AP. It will attempt to synchronise by
2054 * itself, but we can make it more reliable by
2055 * scheduling a session protection time event.
2056 *
2057 * The firmware needs to receive a beacon to
2058 * catch up with synchronisation, use 110% of
2059 * the beacon interval.
2060 *
2061 * Set a large maximum delay to allow for more
2062 * than a single interface.
2063 */
2064 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2065 iwl_mvm_protect_session(mvm, vif, dur, dur,
2066 5 * dur, false);
2067 }
2068
2069 iwl_mvm_sf_update(mvm, vif, false);
2070 iwl_mvm_power_vif_assoc(mvm, vif);
2071 if (vif->p2p) {
2072 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2073 iwl_mvm_update_smps(mvm, vif,
2074 IWL_MVM_SMPS_REQ_PROT,
2075 IEEE80211_SMPS_DYNAMIC);
2076 }
2077 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2078 /*
2079 * If update fails - SF might be running in associated
2080 * mode while disassociated - which is forbidden.
2081 */
2082 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2083 "Failed to update SF upon disassociation\n");
2084
2085 /* remove AP station now that the MAC is unassoc */
2086 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
2087 if (ret)
2088 IWL_ERR(mvm, "failed to remove AP station\n");
2089
2090 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2091 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
2092 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
2093 /* remove quota for this interface */
2094 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2095 if (ret)
2096 IWL_ERR(mvm, "failed to update quotas\n");
2097
2098 if (vif->p2p)
2099 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2100
2101 /* this will take the cleared BSSID from bss_conf */
2102 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2103 if (ret)
2104 IWL_ERR(mvm,
2105 "failed to update MAC %pM (clear after unassoc)\n",
2106 vif->addr);
2107 }
2108
2109 iwl_mvm_recalc_multicast(mvm);
2110 iwl_mvm_configure_bcast_filter(mvm, vif);
2111
2112 /* reset rssi values */
2113 mvmvif->bf_data.ave_beacon_signal = 0;
2114
2115 iwl_mvm_bt_coex_vif_change(mvm);
2116 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2117 IEEE80211_SMPS_AUTOMATIC);
2118 } else if (changes & BSS_CHANGED_BEACON_INFO) {
2119 /*
2120 * We received a beacon _after_ association so
2121 * remove the session protection.
2122 */
2123 iwl_mvm_remove_time_event(mvm, mvmvif,
2124 &mvmvif->time_event_data);
2125 }
2126
2127 if (changes & BSS_CHANGED_BEACON_INFO) {
2128 iwl_mvm_sf_update(mvm, vif, false);
2129 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2130 }
2131
2132 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
2133 ret = iwl_mvm_power_update_mac(mvm);
2134 if (ret)
2135 IWL_ERR(mvm, "failed to update power mode\n");
2136 }
2137
2138 if (changes & BSS_CHANGED_TXPOWER) {
2139 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2140 bss_conf->txpower);
2141 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2142 }
2143
2144 if (changes & BSS_CHANGED_CQM) {
2145 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2146 /* reset cqm events tracking */
2147 mvmvif->bf_data.last_cqm_event = 0;
2148 if (mvmvif->bf_data.bf_enabled) {
2149 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2150 if (ret)
2151 IWL_ERR(mvm,
2152 "failed to update CQM thresholds\n");
2153 }
2154 }
2155
2156 if (changes & BSS_CHANGED_ARP_FILTER) {
2157 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2158 iwl_mvm_configure_bcast_filter(mvm, vif);
2159 }
2160 }
2161
2162 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2163 struct ieee80211_vif *vif)
2164 {
2165 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2166 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2167 int ret;
2168
2169 /*
2170 * iwl_mvm_mac_ctxt_add() might read directly from the device
2171 * (the system time), so make sure it is available.
2172 */
2173 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2174 if (ret)
2175 return ret;
2176
2177 mutex_lock(&mvm->mutex);
2178
2179 /* Send the beacon template */
2180 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2181 if (ret)
2182 goto out_unlock;
2183
2184 /*
2185 * Re-calculate the tsf id, as the master-slave relations depend on the
2186 * beacon interval, which was not known when the AP interface was added.
2187 */
2188 if (vif->type == NL80211_IFTYPE_AP)
2189 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2190
2191 /* Add the mac context */
2192 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2193 if (ret)
2194 goto out_unlock;
2195
2196 /* Perform the binding */
2197 ret = iwl_mvm_binding_add_vif(mvm, vif);
2198 if (ret)
2199 goto out_remove;
2200
2201 /* Send the bcast station. At this stage the TBTT and DTIM time events
2202 * are added and applied to the scheduler */
2203 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2204 if (ret)
2205 goto out_unbind;
2206
2207 /* must be set before quota calculations */
2208 mvmvif->ap_ibss_active = true;
2209
2210 /* power updated needs to be done before quotas */
2211 iwl_mvm_power_update_mac(mvm);
2212
2213 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2214 if (ret)
2215 goto out_quota_failed;
2216
2217 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2218 if (vif->p2p && mvm->p2p_device_vif)
2219 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2220
2221 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2222
2223 iwl_mvm_bt_coex_vif_change(mvm);
2224
2225 /* we don't support TDLS during DCM */
2226 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2227 iwl_mvm_teardown_tdls_peers(mvm);
2228
2229 goto out_unlock;
2230
2231 out_quota_failed:
2232 iwl_mvm_power_update_mac(mvm);
2233 mvmvif->ap_ibss_active = false;
2234 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2235 out_unbind:
2236 iwl_mvm_binding_remove_vif(mvm, vif);
2237 out_remove:
2238 iwl_mvm_mac_ctxt_remove(mvm, vif);
2239 out_unlock:
2240 mutex_unlock(&mvm->mutex);
2241 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2242 return ret;
2243 }
2244
2245 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2246 struct ieee80211_vif *vif)
2247 {
2248 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2249 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2250
2251 iwl_mvm_prepare_mac_removal(mvm, vif);
2252
2253 mutex_lock(&mvm->mutex);
2254
2255 /* Handle AP stop while in CSA */
2256 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2257 iwl_mvm_remove_time_event(mvm, mvmvif,
2258 &mvmvif->time_event_data);
2259 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2260 }
2261
2262 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2263 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2264 mvm->csa_tx_block_bcn_timeout = 0;
2265 }
2266
2267 mvmvif->ap_ibss_active = false;
2268 mvm->ap_last_beacon_gp2 = 0;
2269
2270 iwl_mvm_bt_coex_vif_change(mvm);
2271
2272 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2273
2274 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2275 if (vif->p2p && mvm->p2p_device_vif)
2276 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2277
2278 iwl_mvm_update_quotas(mvm, false, NULL);
2279 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2280 iwl_mvm_binding_remove_vif(mvm, vif);
2281
2282 iwl_mvm_power_update_mac(mvm);
2283
2284 iwl_mvm_mac_ctxt_remove(mvm, vif);
2285
2286 mutex_unlock(&mvm->mutex);
2287 }
2288
2289 static void
2290 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2291 struct ieee80211_vif *vif,
2292 struct ieee80211_bss_conf *bss_conf,
2293 u32 changes)
2294 {
2295 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2296
2297 /* Changes will be applied when the AP/IBSS is started */
2298 if (!mvmvif->ap_ibss_active)
2299 return;
2300
2301 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2302 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2303 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2304 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2305
2306 /* Need to send a new beacon template to the FW */
2307 if (changes & BSS_CHANGED_BEACON &&
2308 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2309 IWL_WARN(mvm, "Failed updating beacon data\n");
2310
2311 if (changes & BSS_CHANGED_TXPOWER) {
2312 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2313 bss_conf->txpower);
2314 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2315 }
2316
2317 }
2318
2319 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2320 struct ieee80211_vif *vif,
2321 struct ieee80211_bss_conf *bss_conf,
2322 u32 changes)
2323 {
2324 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2325
2326 /*
2327 * iwl_mvm_bss_info_changed_station() might call
2328 * iwl_mvm_protect_session(), which reads directly from
2329 * the device (the system time), so make sure it is available.
2330 */
2331 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2332 return;
2333
2334 mutex_lock(&mvm->mutex);
2335
2336 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2337 iwl_mvm_scan_offload_stop(mvm, true);
2338
2339 switch (vif->type) {
2340 case NL80211_IFTYPE_STATION:
2341 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2342 break;
2343 case NL80211_IFTYPE_AP:
2344 case NL80211_IFTYPE_ADHOC:
2345 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2346 break;
2347 default:
2348 /* shouldn't happen */
2349 WARN_ON_ONCE(1);
2350 }
2351
2352 mutex_unlock(&mvm->mutex);
2353 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2354 }
2355
2356 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
2357 enum iwl_scan_status scan_type)
2358 {
2359 int ret;
2360 bool wait_for_handlers = false;
2361
2362 mutex_lock(&mvm->mutex);
2363
2364 if (mvm->scan_status != scan_type) {
2365 ret = 0;
2366 /* make sure there are no pending notifications */
2367 wait_for_handlers = true;
2368 goto out;
2369 }
2370
2371 switch (scan_type) {
2372 case IWL_MVM_SCAN_SCHED:
2373 ret = iwl_mvm_scan_offload_stop(mvm, true);
2374 break;
2375 case IWL_MVM_SCAN_OS:
2376 ret = iwl_mvm_cancel_scan(mvm);
2377 break;
2378 case IWL_MVM_SCAN_NONE:
2379 default:
2380 WARN_ON_ONCE(1);
2381 ret = -EINVAL;
2382 break;
2383 }
2384 if (ret)
2385 goto out;
2386
2387 wait_for_handlers = true;
2388 out:
2389 mutex_unlock(&mvm->mutex);
2390
2391 /* make sure we consume the completion notification */
2392 if (wait_for_handlers)
2393 iwl_mvm_wait_for_async_handlers(mvm);
2394
2395 return ret;
2396 }
2397 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2398 struct ieee80211_vif *vif,
2399 struct ieee80211_scan_request *hw_req)
2400 {
2401 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2402 struct cfg80211_scan_request *req = &hw_req->req;
2403 int ret;
2404
2405 if (req->n_channels == 0 ||
2406 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
2407 return -EINVAL;
2408
2409 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2410 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
2411 if (ret)
2412 return ret;
2413 }
2414
2415 mutex_lock(&mvm->mutex);
2416
2417 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2418 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2419 ret = -EBUSY;
2420 goto out;
2421 }
2422
2423 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2424 ret = -EBUSY;
2425 goto out;
2426 }
2427
2428 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
2429
2430 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
2431 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
2432 else
2433 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
2434
2435 if (ret)
2436 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
2437 out:
2438 mutex_unlock(&mvm->mutex);
2439 return ret;
2440 }
2441
2442 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2443 struct ieee80211_vif *vif)
2444 {
2445 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2446
2447 mutex_lock(&mvm->mutex);
2448
2449 /* Due to a race condition, it's possible that mac80211 asks
2450 * us to stop a hw_scan when it's already stopped. This can
2451 * happen, for instance, if we stopped the scan ourselves,
2452 * called ieee80211_scan_completed() and the userspace called
2453 * cancel scan scan before ieee80211_scan_work() could run.
2454 * To handle that, simply return if the scan is not running.
2455 */
2456 /* FIXME: for now, we ignore this race for UMAC scans, since
2457 * they don't set the scan_status.
2458 */
2459 if ((mvm->scan_status == IWL_MVM_SCAN_OS) ||
2460 (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2461 iwl_mvm_cancel_scan(mvm);
2462
2463 mutex_unlock(&mvm->mutex);
2464 }
2465
2466 static void
2467 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2468 struct ieee80211_sta *sta, u16 tids,
2469 int num_frames,
2470 enum ieee80211_frame_release_type reason,
2471 bool more_data)
2472 {
2473 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2474
2475 /* Called when we need to transmit (a) frame(s) from mac80211 */
2476
2477 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2478 tids, more_data, false);
2479 }
2480
2481 static void
2482 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2483 struct ieee80211_sta *sta, u16 tids,
2484 int num_frames,
2485 enum ieee80211_frame_release_type reason,
2486 bool more_data)
2487 {
2488 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2489
2490 /* Called when we need to transmit (a) frame(s) from agg queue */
2491
2492 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2493 tids, more_data, true);
2494 }
2495
2496 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2497 struct ieee80211_vif *vif,
2498 enum sta_notify_cmd cmd,
2499 struct ieee80211_sta *sta)
2500 {
2501 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2502 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2503 unsigned long txqs = 0, tids = 0;
2504 int tid;
2505
2506 spin_lock_bh(&mvmsta->lock);
2507 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2508 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2509
2510 if (tid_data->state != IWL_AGG_ON &&
2511 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2512 continue;
2513
2514 __set_bit(tid_data->txq_id, &txqs);
2515
2516 if (iwl_mvm_tid_queued(tid_data) == 0)
2517 continue;
2518
2519 __set_bit(tid, &tids);
2520 }
2521
2522 switch (cmd) {
2523 case STA_NOTIFY_SLEEP:
2524 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2525 ieee80211_sta_block_awake(hw, sta, true);
2526
2527 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2528 ieee80211_sta_set_buffered(sta, tid, true);
2529
2530 if (txqs)
2531 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2532 /*
2533 * The fw updates the STA to be asleep. Tx packets on the Tx
2534 * queues to this station will not be transmitted. The fw will
2535 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2536 */
2537 break;
2538 case STA_NOTIFY_AWAKE:
2539 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2540 break;
2541
2542 if (txqs)
2543 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2544 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2545 break;
2546 default:
2547 break;
2548 }
2549 spin_unlock_bh(&mvmsta->lock);
2550 }
2551
2552 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2553 struct ieee80211_vif *vif,
2554 struct ieee80211_sta *sta)
2555 {
2556 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2557 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2558
2559 /*
2560 * This is called before mac80211 does RCU synchronisation,
2561 * so here we already invalidate our internal RCU-protected
2562 * station pointer. The rest of the code will thus no longer
2563 * be able to find the station this way, and we don't rely
2564 * on further RCU synchronisation after the sta_state()
2565 * callback deleted the station.
2566 */
2567 mutex_lock(&mvm->mutex);
2568 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2569 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2570 ERR_PTR(-ENOENT));
2571 mutex_unlock(&mvm->mutex);
2572 }
2573
2574 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2575 const u8 *bssid)
2576 {
2577 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2578 return;
2579
2580 if (iwlwifi_mod_params.uapsd_disable) {
2581 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2582 return;
2583 }
2584
2585 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2586 }
2587
2588 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2589 struct ieee80211_vif *vif,
2590 struct ieee80211_sta *sta,
2591 enum ieee80211_sta_state old_state,
2592 enum ieee80211_sta_state new_state)
2593 {
2594 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2595 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2596 int ret;
2597
2598 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2599 sta->addr, old_state, new_state);
2600
2601 /* this would be a mac80211 bug ... but don't crash */
2602 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2603 return -EINVAL;
2604
2605 /* if a STA is being removed, reuse its ID */
2606 flush_work(&mvm->sta_drained_wk);
2607
2608 mutex_lock(&mvm->mutex);
2609 if (old_state == IEEE80211_STA_NOTEXIST &&
2610 new_state == IEEE80211_STA_NONE) {
2611 /*
2612 * Firmware bug - it'll crash if the beacon interval is less
2613 * than 16. We can't avoid connecting at all, so refuse the
2614 * station state change, this will cause mac80211 to abandon
2615 * attempts to connect to this AP, and eventually wpa_s will
2616 * blacklist the AP...
2617 */
2618 if (vif->type == NL80211_IFTYPE_STATION &&
2619 vif->bss_conf.beacon_int < 16) {
2620 IWL_ERR(mvm,
2621 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2622 sta->addr, vif->bss_conf.beacon_int);
2623 ret = -EINVAL;
2624 goto out_unlock;
2625 }
2626
2627 if (sta->tdls &&
2628 (vif->p2p ||
2629 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2630 IWL_MVM_TDLS_STA_COUNT ||
2631 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2632 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2633 ret = -EBUSY;
2634 goto out_unlock;
2635 }
2636
2637 ret = iwl_mvm_add_sta(mvm, vif, sta);
2638 if (sta->tdls && ret == 0)
2639 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2640 } else if (old_state == IEEE80211_STA_NONE &&
2641 new_state == IEEE80211_STA_AUTH) {
2642 /*
2643 * EBS may be disabled due to previous failures reported by FW.
2644 * Reset EBS status here assuming environment has been changed.
2645 */
2646 mvm->last_ebs_successful = true;
2647 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2648 ret = 0;
2649 } else if (old_state == IEEE80211_STA_AUTH &&
2650 new_state == IEEE80211_STA_ASSOC) {
2651 ret = iwl_mvm_update_sta(mvm, vif, sta);
2652 if (ret == 0)
2653 iwl_mvm_rs_rate_init(mvm, sta,
2654 mvmvif->phy_ctxt->channel->band,
2655 true);
2656 } else if (old_state == IEEE80211_STA_ASSOC &&
2657 new_state == IEEE80211_STA_AUTHORIZED) {
2658
2659 /* we don't support TDLS during DCM */
2660 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2661 iwl_mvm_teardown_tdls_peers(mvm);
2662
2663 /* enable beacon filtering */
2664 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2665 ret = 0;
2666 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2667 new_state == IEEE80211_STA_ASSOC) {
2668 /* disable beacon filtering */
2669 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2670 ret = 0;
2671 } else if (old_state == IEEE80211_STA_ASSOC &&
2672 new_state == IEEE80211_STA_AUTH) {
2673 ret = 0;
2674 } else if (old_state == IEEE80211_STA_AUTH &&
2675 new_state == IEEE80211_STA_NONE) {
2676 ret = 0;
2677 } else if (old_state == IEEE80211_STA_NONE &&
2678 new_state == IEEE80211_STA_NOTEXIST) {
2679 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2680 if (sta->tdls)
2681 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2682 } else {
2683 ret = -EIO;
2684 }
2685 out_unlock:
2686 mutex_unlock(&mvm->mutex);
2687
2688 if (sta->tdls && ret == 0) {
2689 if (old_state == IEEE80211_STA_NOTEXIST &&
2690 new_state == IEEE80211_STA_NONE)
2691 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2692 else if (old_state == IEEE80211_STA_NONE &&
2693 new_state == IEEE80211_STA_NOTEXIST)
2694 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2695 }
2696
2697 return ret;
2698 }
2699
2700 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2701 {
2702 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2703
2704 mvm->rts_threshold = value;
2705
2706 return 0;
2707 }
2708
2709 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2710 struct ieee80211_vif *vif,
2711 struct ieee80211_sta *sta, u32 changed)
2712 {
2713 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2714
2715 if (vif->type == NL80211_IFTYPE_STATION &&
2716 changed & IEEE80211_RC_NSS_CHANGED)
2717 iwl_mvm_sf_update(mvm, vif, false);
2718 }
2719
2720 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2721 struct ieee80211_vif *vif, u16 ac,
2722 const struct ieee80211_tx_queue_params *params)
2723 {
2724 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2725 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2726
2727 mvmvif->queue_params[ac] = *params;
2728
2729 /*
2730 * No need to update right away, we'll get BSS_CHANGED_QOS
2731 * The exception is P2P_DEVICE interface which needs immediate update.
2732 */
2733 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2734 int ret;
2735
2736 mutex_lock(&mvm->mutex);
2737 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2738 mutex_unlock(&mvm->mutex);
2739 return ret;
2740 }
2741 return 0;
2742 }
2743
2744 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2745 struct ieee80211_vif *vif)
2746 {
2747 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2748 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2749 200 + vif->bss_conf.beacon_int);
2750 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2751 100 + vif->bss_conf.beacon_int);
2752
2753 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2754 return;
2755
2756 /*
2757 * iwl_mvm_protect_session() reads directly from the device
2758 * (the system time), so make sure it is available.
2759 */
2760 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2761 return;
2762
2763 mutex_lock(&mvm->mutex);
2764 /* Try really hard to protect the session and hear a beacon */
2765 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2766 mutex_unlock(&mvm->mutex);
2767
2768 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2769 }
2770
2771 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2772 struct ieee80211_vif *vif,
2773 struct cfg80211_sched_scan_request *req,
2774 struct ieee80211_scan_ies *ies)
2775 {
2776 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2777 int ret;
2778
2779 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2780 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2781 if (ret)
2782 return ret;
2783 }
2784
2785 mutex_lock(&mvm->mutex);
2786
2787 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2788 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
2789 ret = -EBUSY;
2790 goto out;
2791 }
2792
2793 if (!vif->bss_conf.idle) {
2794 ret = -EBUSY;
2795 goto out;
2796 }
2797
2798 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2799 ret = -EBUSY;
2800 goto out;
2801 }
2802
2803 ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
2804 if (ret)
2805 mvm->scan_status = IWL_MVM_SCAN_NONE;
2806
2807 out:
2808 mutex_unlock(&mvm->mutex);
2809 return ret;
2810 }
2811
2812 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2813 struct ieee80211_vif *vif)
2814 {
2815 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2816 int ret;
2817
2818 mutex_lock(&mvm->mutex);
2819
2820 /* Due to a race condition, it's possible that mac80211 asks
2821 * us to stop a sched_scan when it's already stopped. This
2822 * can happen, for instance, if we stopped the scan ourselves,
2823 * called ieee80211_sched_scan_stopped() and the userspace called
2824 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2825 * could run. To handle this, simply return if the scan is
2826 * not running.
2827 */
2828 /* FIXME: for now, we ignore this race for UMAC scans, since
2829 * they don't set the scan_status.
2830 */
2831 if (mvm->scan_status != IWL_MVM_SCAN_SCHED &&
2832 !(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2833 mutex_unlock(&mvm->mutex);
2834 return 0;
2835 }
2836
2837 ret = iwl_mvm_scan_offload_stop(mvm, false);
2838 mutex_unlock(&mvm->mutex);
2839 iwl_mvm_wait_for_async_handlers(mvm);
2840
2841 return ret;
2842 }
2843
2844 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2845 enum set_key_cmd cmd,
2846 struct ieee80211_vif *vif,
2847 struct ieee80211_sta *sta,
2848 struct ieee80211_key_conf *key)
2849 {
2850 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2851 int ret;
2852
2853 if (iwlwifi_mod_params.sw_crypto) {
2854 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2855 return -EOPNOTSUPP;
2856 }
2857
2858 switch (key->cipher) {
2859 case WLAN_CIPHER_SUITE_TKIP:
2860 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2861 /* fall-through */
2862 case WLAN_CIPHER_SUITE_CCMP:
2863 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2864 break;
2865 case WLAN_CIPHER_SUITE_AES_CMAC:
2866 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2867 break;
2868 case WLAN_CIPHER_SUITE_WEP40:
2869 case WLAN_CIPHER_SUITE_WEP104:
2870 /* For non-client mode, only use WEP keys for TX as we probably
2871 * don't have a station yet anyway and would then have to keep
2872 * track of the keys, linking them to each of the clients/peers
2873 * as they appear. For now, don't do that, for performance WEP
2874 * offload doesn't really matter much, but we need it for some
2875 * other offload features in client mode.
2876 */
2877 if (vif->type != NL80211_IFTYPE_STATION)
2878 return 0;
2879 break;
2880 default:
2881 /* currently FW supports only one optional cipher scheme */
2882 if (hw->n_cipher_schemes &&
2883 hw->cipher_schemes->cipher == key->cipher)
2884 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2885 else
2886 return -EOPNOTSUPP;
2887 }
2888
2889 mutex_lock(&mvm->mutex);
2890
2891 switch (cmd) {
2892 case SET_KEY:
2893 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2894 vif->type == NL80211_IFTYPE_AP) && !sta) {
2895 /*
2896 * GTK on AP interface is a TX-only key, return 0;
2897 * on IBSS they're per-station and because we're lazy
2898 * we don't support them for RX, so do the same.
2899 */
2900 ret = 0;
2901 key->hw_key_idx = STA_KEY_IDX_INVALID;
2902 break;
2903 }
2904
2905 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2906 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2907 if (ret) {
2908 IWL_WARN(mvm, "set key failed\n");
2909 /*
2910 * can't add key for RX, but we don't need it
2911 * in the device for TX so still return 0
2912 */
2913 key->hw_key_idx = STA_KEY_IDX_INVALID;
2914 ret = 0;
2915 }
2916
2917 break;
2918 case DISABLE_KEY:
2919 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2920 ret = 0;
2921 break;
2922 }
2923
2924 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2925 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2926 break;
2927 default:
2928 ret = -EINVAL;
2929 }
2930
2931 mutex_unlock(&mvm->mutex);
2932 return ret;
2933 }
2934
2935 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2936 struct ieee80211_vif *vif,
2937 struct ieee80211_key_conf *keyconf,
2938 struct ieee80211_sta *sta,
2939 u32 iv32, u16 *phase1key)
2940 {
2941 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2942
2943 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2944 return;
2945
2946 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2947 }
2948
2949
2950 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2951 struct iwl_rx_packet *pkt, void *data)
2952 {
2953 struct iwl_mvm *mvm =
2954 container_of(notif_wait, struct iwl_mvm, notif_wait);
2955 struct iwl_hs20_roc_res *resp;
2956 int resp_len = iwl_rx_packet_payload_len(pkt);
2957 struct iwl_mvm_time_event_data *te_data = data;
2958
2959 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2960 return true;
2961
2962 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2963 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2964 return true;
2965 }
2966
2967 resp = (void *)pkt->data;
2968
2969 IWL_DEBUG_TE(mvm,
2970 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2971 resp->status, resp->event_unique_id);
2972
2973 te_data->uid = le32_to_cpu(resp->event_unique_id);
2974 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2975 te_data->uid);
2976
2977 spin_lock_bh(&mvm->time_event_lock);
2978 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2979 spin_unlock_bh(&mvm->time_event_lock);
2980
2981 return true;
2982 }
2983
2984 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2985 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2986 struct ieee80211_channel *channel,
2987 struct ieee80211_vif *vif,
2988 int duration)
2989 {
2990 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2991 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2992 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2993 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2994 struct iwl_notification_wait wait_time_event;
2995 struct iwl_hs20_roc_req aux_roc_req = {
2996 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2997 .id_and_color =
2998 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2999 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3000 /* Set the channel info data */
3001 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
3002 PHY_BAND_24 : PHY_BAND_5,
3003 .channel_info.channel = channel->hw_value,
3004 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3005 /* Set the time and duration */
3006 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3007 .apply_time_max_delay =
3008 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
3009 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
3010 };
3011
3012 /* Set the node address */
3013 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3014
3015 lockdep_assert_held(&mvm->mutex);
3016
3017 spin_lock_bh(&mvm->time_event_lock);
3018
3019 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3020 spin_unlock_bh(&mvm->time_event_lock);
3021 return -EIO;
3022 }
3023
3024 te_data->vif = vif;
3025 te_data->duration = duration;
3026 te_data->id = HOT_SPOT_CMD;
3027
3028 spin_unlock_bh(&mvm->time_event_lock);
3029
3030 /*
3031 * Use a notification wait, which really just processes the
3032 * command response and doesn't wait for anything, in order
3033 * to be able to process the response and get the UID inside
3034 * the RX path. Using CMD_WANT_SKB doesn't work because it
3035 * stores the buffer and then wakes up this thread, by which
3036 * time another notification (that the time event started)
3037 * might already be processed unsuccessfully.
3038 */
3039 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3040 time_event_response,
3041 ARRAY_SIZE(time_event_response),
3042 iwl_mvm_rx_aux_roc, te_data);
3043
3044 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3045 &aux_roc_req);
3046
3047 if (res) {
3048 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3049 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3050 goto out_clear_te;
3051 }
3052
3053 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3054 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3055 /* should never fail */
3056 WARN_ON_ONCE(res);
3057
3058 if (res) {
3059 out_clear_te:
3060 spin_lock_bh(&mvm->time_event_lock);
3061 iwl_mvm_te_clear_data(mvm, te_data);
3062 spin_unlock_bh(&mvm->time_event_lock);
3063 }
3064
3065 return res;
3066 }
3067
3068 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3069 struct ieee80211_vif *vif,
3070 struct ieee80211_channel *channel,
3071 int duration,
3072 enum ieee80211_roc_type type)
3073 {
3074 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3075 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3076 struct cfg80211_chan_def chandef;
3077 struct iwl_mvm_phy_ctxt *phy_ctxt;
3078 int ret, i;
3079
3080 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3081 duration, type);
3082
3083 flush_work(&mvm->roc_done_wk);
3084
3085 mutex_lock(&mvm->mutex);
3086
3087 switch (vif->type) {
3088 case NL80211_IFTYPE_STATION:
3089 if (mvm->fw->ucode_capa.capa[0] &
3090 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
3091 /* Use aux roc framework (HS20) */
3092 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3093 vif, duration);
3094 goto out_unlock;
3095 }
3096 IWL_ERR(mvm, "hotspot not supported\n");
3097 ret = -EINVAL;
3098 goto out_unlock;
3099 case NL80211_IFTYPE_P2P_DEVICE:
3100 /* handle below */
3101 break;
3102 default:
3103 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3104 ret = -EINVAL;
3105 goto out_unlock;
3106 }
3107
3108 for (i = 0; i < NUM_PHY_CTX; i++) {
3109 phy_ctxt = &mvm->phy_ctxts[i];
3110 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3111 continue;
3112
3113 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3114 /*
3115 * Unbind the P2P_DEVICE from the current PHY context,
3116 * and if the PHY context is not used remove it.
3117 */
3118 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3119 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3120 goto out_unlock;
3121
3122 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3123
3124 /* Bind the P2P_DEVICE to the current PHY Context */
3125 mvmvif->phy_ctxt = phy_ctxt;
3126
3127 ret = iwl_mvm_binding_add_vif(mvm, vif);
3128 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3129 goto out_unlock;
3130
3131 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3132 goto schedule_time_event;
3133 }
3134 }
3135
3136 /* Need to update the PHY context only if the ROC channel changed */
3137 if (channel == mvmvif->phy_ctxt->channel)
3138 goto schedule_time_event;
3139
3140 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3141
3142 /*
3143 * Change the PHY context configuration as it is currently referenced
3144 * only by the P2P Device MAC
3145 */
3146 if (mvmvif->phy_ctxt->ref == 1) {
3147 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3148 &chandef, 1, 1);
3149 if (ret)
3150 goto out_unlock;
3151 } else {
3152 /*
3153 * The PHY context is shared with other MACs. Need to remove the
3154 * P2P Device from the binding, allocate an new PHY context and
3155 * create a new binding
3156 */
3157 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3158 if (!phy_ctxt) {
3159 ret = -ENOSPC;
3160 goto out_unlock;
3161 }
3162
3163 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3164 1, 1);
3165 if (ret) {
3166 IWL_ERR(mvm, "Failed to change PHY context\n");
3167 goto out_unlock;
3168 }
3169
3170 /* Unbind the P2P_DEVICE from the current PHY context */
3171 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3172 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3173 goto out_unlock;
3174
3175 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3176
3177 /* Bind the P2P_DEVICE to the new allocated PHY context */
3178 mvmvif->phy_ctxt = phy_ctxt;
3179
3180 ret = iwl_mvm_binding_add_vif(mvm, vif);
3181 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3182 goto out_unlock;
3183
3184 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3185 }
3186
3187 schedule_time_event:
3188 /* Schedule the time events */
3189 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3190
3191 out_unlock:
3192 mutex_unlock(&mvm->mutex);
3193 IWL_DEBUG_MAC80211(mvm, "leave\n");
3194 return ret;
3195 }
3196
3197 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3198 {
3199 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3200
3201 IWL_DEBUG_MAC80211(mvm, "enter\n");
3202
3203 mutex_lock(&mvm->mutex);
3204 iwl_mvm_stop_roc(mvm);
3205 mutex_unlock(&mvm->mutex);
3206
3207 IWL_DEBUG_MAC80211(mvm, "leave\n");
3208 return 0;
3209 }
3210
3211 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3212 struct ieee80211_chanctx_conf *ctx)
3213 {
3214 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3215 struct iwl_mvm_phy_ctxt *phy_ctxt;
3216 int ret;
3217
3218 lockdep_assert_held(&mvm->mutex);
3219
3220 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3221
3222 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3223 if (!phy_ctxt) {
3224 ret = -ENOSPC;
3225 goto out;
3226 }
3227
3228 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3229 ctx->rx_chains_static,
3230 ctx->rx_chains_dynamic);
3231 if (ret) {
3232 IWL_ERR(mvm, "Failed to add PHY context\n");
3233 goto out;
3234 }
3235
3236 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3237 *phy_ctxt_id = phy_ctxt->id;
3238 out:
3239 return ret;
3240 }
3241
3242 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3243 struct ieee80211_chanctx_conf *ctx)
3244 {
3245 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3246 int ret;
3247
3248 mutex_lock(&mvm->mutex);
3249 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3250 mutex_unlock(&mvm->mutex);
3251
3252 return ret;
3253 }
3254
3255 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3256 struct ieee80211_chanctx_conf *ctx)
3257 {
3258 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3259 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3260
3261 lockdep_assert_held(&mvm->mutex);
3262
3263 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3264 }
3265
3266 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3267 struct ieee80211_chanctx_conf *ctx)
3268 {
3269 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3270
3271 mutex_lock(&mvm->mutex);
3272 __iwl_mvm_remove_chanctx(mvm, ctx);
3273 mutex_unlock(&mvm->mutex);
3274 }
3275
3276 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3277 struct ieee80211_chanctx_conf *ctx,
3278 u32 changed)
3279 {
3280 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3281 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3282 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3283
3284 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3285 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3286 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3287 IEEE80211_CHANCTX_CHANGE_RADAR |
3288 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3289 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3290 phy_ctxt->ref, changed))
3291 return;
3292
3293 mutex_lock(&mvm->mutex);
3294 iwl_mvm_bt_coex_vif_change(mvm);
3295 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3296 ctx->rx_chains_static,
3297 ctx->rx_chains_dynamic);
3298 mutex_unlock(&mvm->mutex);
3299 }
3300
3301 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3302 struct ieee80211_vif *vif,
3303 struct ieee80211_chanctx_conf *ctx,
3304 bool switching_chanctx)
3305 {
3306 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3307 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3308 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3309 int ret;
3310
3311 lockdep_assert_held(&mvm->mutex);
3312
3313 mvmvif->phy_ctxt = phy_ctxt;
3314
3315 switch (vif->type) {
3316 case NL80211_IFTYPE_AP:
3317 /* only needed if we're switching chanctx (i.e. during CSA) */
3318 if (switching_chanctx) {
3319 mvmvif->ap_ibss_active = true;
3320 break;
3321 }
3322 case NL80211_IFTYPE_ADHOC:
3323 /*
3324 * The AP binding flow is handled as part of the start_ap flow
3325 * (in bss_info_changed), similarly for IBSS.
3326 */
3327 ret = 0;
3328 goto out;
3329 case NL80211_IFTYPE_STATION:
3330 break;
3331 case NL80211_IFTYPE_MONITOR:
3332 /* always disable PS when a monitor interface is active */
3333 mvmvif->ps_disabled = true;
3334 break;
3335 default:
3336 ret = -EINVAL;
3337 goto out;
3338 }
3339
3340 ret = iwl_mvm_binding_add_vif(mvm, vif);
3341 if (ret)
3342 goto out;
3343
3344 /*
3345 * Power state must be updated before quotas,
3346 * otherwise fw will complain.
3347 */
3348 iwl_mvm_power_update_mac(mvm);
3349
3350 /* Setting the quota at this stage is only required for monitor
3351 * interfaces. For the other types, the bss_info changed flow
3352 * will handle quota settings.
3353 */
3354 if (vif->type == NL80211_IFTYPE_MONITOR) {
3355 mvmvif->monitor_active = true;
3356 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3357 if (ret)
3358 goto out_remove_binding;
3359 }
3360
3361 /* Handle binding during CSA */
3362 if (vif->type == NL80211_IFTYPE_AP) {
3363 iwl_mvm_update_quotas(mvm, false, NULL);
3364 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3365 }
3366
3367 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3368 u32 duration = 2 * vif->bss_conf.beacon_int;
3369
3370 /* iwl_mvm_protect_session() reads directly from the
3371 * device (the system time), so make sure it is
3372 * available.
3373 */
3374 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3375 if (ret)
3376 goto out_remove_binding;
3377
3378 /* Protect the session to make sure we hear the first
3379 * beacon on the new channel.
3380 */
3381 iwl_mvm_protect_session(mvm, vif, duration, duration,
3382 vif->bss_conf.beacon_int / 2,
3383 true);
3384
3385 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3386
3387 iwl_mvm_update_quotas(mvm, false, NULL);
3388 }
3389
3390 goto out;
3391
3392 out_remove_binding:
3393 iwl_mvm_binding_remove_vif(mvm, vif);
3394 iwl_mvm_power_update_mac(mvm);
3395 out:
3396 if (ret)
3397 mvmvif->phy_ctxt = NULL;
3398 return ret;
3399 }
3400 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3401 struct ieee80211_vif *vif,
3402 struct ieee80211_chanctx_conf *ctx)
3403 {
3404 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3405 int ret;
3406
3407 mutex_lock(&mvm->mutex);
3408 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3409 mutex_unlock(&mvm->mutex);
3410
3411 return ret;
3412 }
3413
3414 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3415 struct ieee80211_vif *vif,
3416 struct ieee80211_chanctx_conf *ctx,
3417 bool switching_chanctx)
3418 {
3419 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3420 struct ieee80211_vif *disabled_vif = NULL;
3421
3422 lockdep_assert_held(&mvm->mutex);
3423
3424 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3425
3426 switch (vif->type) {
3427 case NL80211_IFTYPE_ADHOC:
3428 goto out;
3429 case NL80211_IFTYPE_MONITOR:
3430 mvmvif->monitor_active = false;
3431 mvmvif->ps_disabled = false;
3432 break;
3433 case NL80211_IFTYPE_AP:
3434 /* This part is triggered only during CSA */
3435 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3436 goto out;
3437
3438 mvmvif->csa_countdown = false;
3439
3440 /* Set CS bit on all the stations */
3441 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3442
3443 /* Save blocked iface, the timeout is set on the next beacon */
3444 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3445
3446 mvmvif->ap_ibss_active = false;
3447 break;
3448 case NL80211_IFTYPE_STATION:
3449 if (!switching_chanctx)
3450 break;
3451
3452 disabled_vif = vif;
3453
3454 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3455 break;
3456 default:
3457 break;
3458 }
3459
3460 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3461 iwl_mvm_binding_remove_vif(mvm, vif);
3462
3463 out:
3464 mvmvif->phy_ctxt = NULL;
3465 iwl_mvm_power_update_mac(mvm);
3466 }
3467
3468 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3469 struct ieee80211_vif *vif,
3470 struct ieee80211_chanctx_conf *ctx)
3471 {
3472 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3473
3474 mutex_lock(&mvm->mutex);
3475 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3476 mutex_unlock(&mvm->mutex);
3477 }
3478
3479 static int
3480 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3481 struct ieee80211_vif_chanctx_switch *vifs)
3482 {
3483 int ret;
3484
3485 mutex_lock(&mvm->mutex);
3486 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3487 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3488
3489 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3490 if (ret) {
3491 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3492 goto out_reassign;
3493 }
3494
3495 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3496 true);
3497 if (ret) {
3498 IWL_ERR(mvm,
3499 "failed to assign new_ctx during channel switch\n");
3500 goto out_remove;
3501 }
3502
3503 /* we don't support TDLS during DCM - can be caused by channel switch */
3504 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3505 iwl_mvm_teardown_tdls_peers(mvm);
3506
3507 goto out;
3508
3509 out_remove:
3510 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3511
3512 out_reassign:
3513 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3514 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3515 goto out_restart;
3516 }
3517
3518 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3519 true)) {
3520 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3521 goto out_restart;
3522 }
3523
3524 goto out;
3525
3526 out_restart:
3527 /* things keep failing, better restart the hw */
3528 iwl_mvm_nic_restart(mvm, false);
3529
3530 out:
3531 mutex_unlock(&mvm->mutex);
3532
3533 return ret;
3534 }
3535
3536 static int
3537 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3538 struct ieee80211_vif_chanctx_switch *vifs)
3539 {
3540 int ret;
3541
3542 mutex_lock(&mvm->mutex);
3543 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3544
3545 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3546 true);
3547 if (ret) {
3548 IWL_ERR(mvm,
3549 "failed to assign new_ctx during channel switch\n");
3550 goto out_reassign;
3551 }
3552
3553 goto out;
3554
3555 out_reassign:
3556 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3557 true)) {
3558 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3559 goto out_restart;
3560 }
3561
3562 goto out;
3563
3564 out_restart:
3565 /* things keep failing, better restart the hw */
3566 iwl_mvm_nic_restart(mvm, false);
3567
3568 out:
3569 mutex_unlock(&mvm->mutex);
3570
3571 return ret;
3572 }
3573
3574 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3575 struct ieee80211_vif_chanctx_switch *vifs,
3576 int n_vifs,
3577 enum ieee80211_chanctx_switch_mode mode)
3578 {
3579 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3580 int ret;
3581
3582 /* we only support a single-vif right now */
3583 if (n_vifs > 1)
3584 return -EOPNOTSUPP;
3585
3586 switch (mode) {
3587 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3588 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3589 break;
3590 case CHANCTX_SWMODE_REASSIGN_VIF:
3591 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3592 break;
3593 default:
3594 ret = -EOPNOTSUPP;
3595 break;
3596 }
3597
3598 return ret;
3599 }
3600
3601 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3602 struct ieee80211_sta *sta,
3603 bool set)
3604 {
3605 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3606 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3607
3608 if (!mvm_sta || !mvm_sta->vif) {
3609 IWL_ERR(mvm, "Station is not associated to a vif\n");
3610 return -EINVAL;
3611 }
3612
3613 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3614 }
3615
3616 #ifdef CONFIG_NL80211_TESTMODE
3617 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3618 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3619 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3620 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3621 };
3622
3623 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3624 struct ieee80211_vif *vif,
3625 void *data, int len)
3626 {
3627 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3628 int err;
3629 u32 noa_duration;
3630
3631 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3632 if (err)
3633 return err;
3634
3635 if (!tb[IWL_MVM_TM_ATTR_CMD])
3636 return -EINVAL;
3637
3638 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3639 case IWL_MVM_TM_CMD_SET_NOA:
3640 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3641 !vif->bss_conf.enable_beacon ||
3642 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3643 return -EINVAL;
3644
3645 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3646 if (noa_duration >= vif->bss_conf.beacon_int)
3647 return -EINVAL;
3648
3649 mvm->noa_duration = noa_duration;
3650 mvm->noa_vif = vif;
3651
3652 return iwl_mvm_update_quotas(mvm, false, NULL);
3653 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3654 /* must be associated client vif - ignore authorized */
3655 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3656 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3657 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3658 return -EINVAL;
3659
3660 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3661 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3662 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3663 }
3664
3665 return -EOPNOTSUPP;
3666 }
3667
3668 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3669 struct ieee80211_vif *vif,
3670 void *data, int len)
3671 {
3672 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3673 int err;
3674
3675 mutex_lock(&mvm->mutex);
3676 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3677 mutex_unlock(&mvm->mutex);
3678
3679 return err;
3680 }
3681 #endif
3682
3683 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3684 struct ieee80211_vif *vif,
3685 struct ieee80211_channel_switch *chsw)
3686 {
3687 /* By implementing this operation, we prevent mac80211 from
3688 * starting its own channel switch timer, so that we can call
3689 * ieee80211_chswitch_done() ourselves at the right time
3690 * (which is when the absence time event starts).
3691 */
3692
3693 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3694 "dummy channel switch op\n");
3695 }
3696
3697 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3698 struct ieee80211_vif *vif,
3699 struct ieee80211_channel_switch *chsw)
3700 {
3701 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3702 struct ieee80211_vif *csa_vif;
3703 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3704 u32 apply_time;
3705 int ret;
3706
3707 mutex_lock(&mvm->mutex);
3708
3709 mvmvif->csa_failed = false;
3710
3711 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3712 chsw->chandef.center_freq1);
3713
3714 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3715
3716 switch (vif->type) {
3717 case NL80211_IFTYPE_AP:
3718 csa_vif =
3719 rcu_dereference_protected(mvm->csa_vif,
3720 lockdep_is_held(&mvm->mutex));
3721 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3722 "Another CSA is already in progress")) {
3723 ret = -EBUSY;
3724 goto out_unlock;
3725 }
3726
3727 rcu_assign_pointer(mvm->csa_vif, vif);
3728
3729 if (WARN_ONCE(mvmvif->csa_countdown,
3730 "Previous CSA countdown didn't complete")) {
3731 ret = -EBUSY;
3732 goto out_unlock;
3733 }
3734
3735 break;
3736 case NL80211_IFTYPE_STATION:
3737 /* Schedule the time event to a bit before beacon 1,
3738 * to make sure we're in the new channel when the
3739 * GO/AP arrives.
3740 */
3741 apply_time = chsw->device_timestamp +
3742 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3743 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3744
3745 if (chsw->block_tx)
3746 iwl_mvm_csa_client_absent(mvm, vif);
3747
3748 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3749 apply_time);
3750 if (mvmvif->bf_data.bf_enabled) {
3751 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3752 if (ret)
3753 goto out_unlock;
3754 }
3755
3756 break;
3757 default:
3758 break;
3759 }
3760
3761 mvmvif->ps_disabled = true;
3762
3763 ret = iwl_mvm_power_update_ps(mvm);
3764 if (ret)
3765 goto out_unlock;
3766
3767 /* we won't be on this channel any longer */
3768 iwl_mvm_teardown_tdls_peers(mvm);
3769
3770 out_unlock:
3771 mutex_unlock(&mvm->mutex);
3772
3773 return ret;
3774 }
3775
3776 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3777 struct ieee80211_vif *vif)
3778 {
3779 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3780 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3781 int ret;
3782
3783 mutex_lock(&mvm->mutex);
3784
3785 if (mvmvif->csa_failed) {
3786 mvmvif->csa_failed = false;
3787 ret = -EIO;
3788 goto out_unlock;
3789 }
3790
3791 if (vif->type == NL80211_IFTYPE_STATION) {
3792 struct iwl_mvm_sta *mvmsta;
3793
3794 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3795 mvmvif->ap_sta_id);
3796
3797 if (WARN_ON(!mvmsta)) {
3798 ret = -EIO;
3799 goto out_unlock;
3800 }
3801
3802 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3803
3804 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3805
3806 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3807 if (ret)
3808 goto out_unlock;
3809
3810 iwl_mvm_stop_session_protection(mvm, vif);
3811 }
3812
3813 mvmvif->ps_disabled = false;
3814
3815 ret = iwl_mvm_power_update_ps(mvm);
3816
3817 out_unlock:
3818 mutex_unlock(&mvm->mutex);
3819
3820 return ret;
3821 }
3822
3823 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3824 struct ieee80211_vif *vif, u32 queues, bool drop)
3825 {
3826 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3827 struct iwl_mvm_vif *mvmvif;
3828 struct iwl_mvm_sta *mvmsta;
3829 struct ieee80211_sta *sta;
3830 int i;
3831 u32 msk = 0;
3832
3833 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3834 return;
3835
3836 mutex_lock(&mvm->mutex);
3837 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3838
3839 /* flush the AP-station and all TDLS peers */
3840 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3841 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3842 lockdep_is_held(&mvm->mutex));
3843 if (IS_ERR_OR_NULL(sta))
3844 continue;
3845
3846 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3847 if (mvmsta->vif != vif)
3848 continue;
3849
3850 /* make sure only TDLS peers or the AP are flushed */
3851 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3852
3853 msk |= mvmsta->tfd_queue_msk;
3854 }
3855
3856 if (drop) {
3857 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3858 IWL_ERR(mvm, "flush request fail\n");
3859 mutex_unlock(&mvm->mutex);
3860 } else {
3861 mutex_unlock(&mvm->mutex);
3862
3863 /* this can take a while, and we may need/want other operations
3864 * to succeed while doing this, so do it without the mutex held
3865 */
3866 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3867 }
3868 }
3869
3870 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3871 struct survey_info *survey)
3872 {
3873 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3874 int ret;
3875
3876 memset(survey, 0, sizeof(*survey));
3877
3878 /* only support global statistics right now */
3879 if (idx != 0)
3880 return -ENOENT;
3881
3882 if (!(mvm->fw->ucode_capa.capa[0] &
3883 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3884 return -ENOENT;
3885
3886 mutex_lock(&mvm->mutex);
3887
3888 if (mvm->ucode_loaded) {
3889 ret = iwl_mvm_request_statistics(mvm, false);
3890 if (ret)
3891 goto out;
3892 }
3893
3894 survey->filled = SURVEY_INFO_TIME |
3895 SURVEY_INFO_TIME_RX |
3896 SURVEY_INFO_TIME_TX |
3897 SURVEY_INFO_TIME_SCAN;
3898 survey->time = mvm->accu_radio_stats.on_time_rf +
3899 mvm->radio_stats.on_time_rf;
3900 do_div(survey->time, USEC_PER_MSEC);
3901
3902 survey->time_rx = mvm->accu_radio_stats.rx_time +
3903 mvm->radio_stats.rx_time;
3904 do_div(survey->time_rx, USEC_PER_MSEC);
3905
3906 survey->time_tx = mvm->accu_radio_stats.tx_time +
3907 mvm->radio_stats.tx_time;
3908 do_div(survey->time_tx, USEC_PER_MSEC);
3909
3910 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3911 mvm->radio_stats.on_time_scan;
3912 do_div(survey->time_scan, USEC_PER_MSEC);
3913
3914 ret = 0;
3915 out:
3916 mutex_unlock(&mvm->mutex);
3917 return ret;
3918 }
3919
3920 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3921 struct ieee80211_vif *vif,
3922 struct ieee80211_sta *sta,
3923 struct station_info *sinfo)
3924 {
3925 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3926 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3927 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3928
3929 if (!(mvm->fw->ucode_capa.capa[0] &
3930 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3931 return;
3932
3933 /* if beacon filtering isn't on mac80211 does it anyway */
3934 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3935 return;
3936
3937 if (!vif->bss_conf.assoc)
3938 return;
3939
3940 mutex_lock(&mvm->mutex);
3941
3942 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3943 goto unlock;
3944
3945 if (iwl_mvm_request_statistics(mvm, false))
3946 goto unlock;
3947
3948 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3949 mvmvif->beacon_stats.accu_num_beacons;
3950 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3951 if (mvmvif->beacon_stats.avg_signal) {
3952 /* firmware only reports a value after RXing a few beacons */
3953 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3954 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3955 }
3956 unlock:
3957 mutex_unlock(&mvm->mutex);
3958 }
3959
3960 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3961 struct ieee80211_vif *vif,
3962 const struct ieee80211_event *event)
3963 {
3964 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
3965 do { \
3966 if ((_cnt) && --(_cnt)) \
3967 break; \
3968 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3969 } while (0)
3970
3971 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3972 struct iwl_fw_dbg_trigger_tlv *trig;
3973 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3974
3975 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3976 return;
3977
3978 if (event->u.mlme.status == MLME_SUCCESS)
3979 return;
3980
3981 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3982 trig_mlme = (void *)trig->data;
3983 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3984 return;
3985
3986 if (event->u.mlme.data == ASSOC_EVENT) {
3987 if (event->u.mlme.status == MLME_DENIED)
3988 CHECK_MLME_TRIGGER(mvm, trig, buf,
3989 trig_mlme->stop_assoc_denied,
3990 "DENIED ASSOC: reason %d",
3991 event->u.mlme.reason);
3992 else if (event->u.mlme.status == MLME_TIMEOUT)
3993 CHECK_MLME_TRIGGER(mvm, trig, buf,
3994 trig_mlme->stop_assoc_timeout,
3995 "ASSOC TIMEOUT");
3996 } else if (event->u.mlme.data == AUTH_EVENT) {
3997 if (event->u.mlme.status == MLME_DENIED)
3998 CHECK_MLME_TRIGGER(mvm, trig, buf,
3999 trig_mlme->stop_auth_denied,
4000 "DENIED AUTH: reason %d",
4001 event->u.mlme.reason);
4002 else if (event->u.mlme.status == MLME_TIMEOUT)
4003 CHECK_MLME_TRIGGER(mvm, trig, buf,
4004 trig_mlme->stop_auth_timeout,
4005 "AUTH TIMEOUT");
4006 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4007 CHECK_MLME_TRIGGER(mvm, trig, buf,
4008 trig_mlme->stop_rx_deauth,
4009 "DEAUTH RX %d", event->u.mlme.reason);
4010 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4011 CHECK_MLME_TRIGGER(mvm, trig, buf,
4012 trig_mlme->stop_tx_deauth,
4013 "DEAUTH TX %d", event->u.mlme.reason);
4014 }
4015 #undef CHECK_MLME_TRIGGER
4016 }
4017
4018 const struct ieee80211_ops iwl_mvm_hw_ops = {
4019 .tx = iwl_mvm_mac_tx,
4020 .ampdu_action = iwl_mvm_mac_ampdu_action,
4021 .start = iwl_mvm_mac_start,
4022 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4023 .stop = iwl_mvm_mac_stop,
4024 .add_interface = iwl_mvm_mac_add_interface,
4025 .remove_interface = iwl_mvm_mac_remove_interface,
4026 .config = iwl_mvm_mac_config,
4027 .prepare_multicast = iwl_mvm_prepare_multicast,
4028 .configure_filter = iwl_mvm_configure_filter,
4029 .bss_info_changed = iwl_mvm_bss_info_changed,
4030 .hw_scan = iwl_mvm_mac_hw_scan,
4031 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4032 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4033 .sta_state = iwl_mvm_mac_sta_state,
4034 .sta_notify = iwl_mvm_mac_sta_notify,
4035 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4036 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4037 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4038 .sta_rc_update = iwl_mvm_sta_rc_update,
4039 .conf_tx = iwl_mvm_mac_conf_tx,
4040 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4041 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4042 .flush = iwl_mvm_mac_flush,
4043 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4044 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4045 .set_key = iwl_mvm_mac_set_key,
4046 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4047 .remain_on_channel = iwl_mvm_roc,
4048 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4049 .add_chanctx = iwl_mvm_add_chanctx,
4050 .remove_chanctx = iwl_mvm_remove_chanctx,
4051 .change_chanctx = iwl_mvm_change_chanctx,
4052 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4053 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4054 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4055
4056 .start_ap = iwl_mvm_start_ap_ibss,
4057 .stop_ap = iwl_mvm_stop_ap_ibss,
4058 .join_ibss = iwl_mvm_start_ap_ibss,
4059 .leave_ibss = iwl_mvm_stop_ap_ibss,
4060
4061 .set_tim = iwl_mvm_set_tim,
4062
4063 .channel_switch = iwl_mvm_channel_switch,
4064 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4065 .post_channel_switch = iwl_mvm_post_channel_switch,
4066
4067 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4068 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4069 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4070
4071 .event_callback = iwl_mvm_mac_event_callback,
4072
4073 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4074
4075 #ifdef CONFIG_PM_SLEEP
4076 /* look at d3.c */
4077 .suspend = iwl_mvm_suspend,
4078 .resume = iwl_mvm_resume,
4079 .set_wakeup = iwl_mvm_set_wakeup,
4080 .set_rekey_data = iwl_mvm_set_rekey_data,
4081 #if IS_ENABLED(CONFIG_IPV6)
4082 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4083 #endif
4084 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4085 #endif
4086 .get_survey = iwl_mvm_mac_get_survey,
4087 .sta_statistics = iwl_mvm_mac_sta_statistics,
4088 };
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