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iwlwifi: mvm: rename unified_scan symbols to just scan
[deliverable/linux.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 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
514 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
515
516 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
517 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
518 else
519 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
520
521 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
522 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
523 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
524 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
525 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
526 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
527
528 if ((mvm->fw->ucode_capa.capa[0] &
529 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
530 (mvm->fw->ucode_capa.api[0] &
531 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
532 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
533 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
534 }
535
536 hw->wiphy->hw_version = mvm->trans->hw_id;
537
538 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
539 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
540 else
541 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
542
543 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
544 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
545 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
546 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
547 /* we create the 802.11 header and zero length SSID IE. */
548 hw->wiphy->max_sched_scan_ie_len =
549 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
550 }
551
552 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
553 NL80211_FEATURE_LOW_PRIORITY_SCAN |
554 NL80211_FEATURE_P2P_GO_OPPPS |
555 NL80211_FEATURE_DYNAMIC_SMPS |
556 NL80211_FEATURE_STATIC_SMPS |
557 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
558
559 if (mvm->fw->ucode_capa.capa[0] &
560 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
561 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
562 if (mvm->fw->ucode_capa.capa[0] &
563 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
564 hw->wiphy->features |= NL80211_FEATURE_QUIET;
565
566 if (mvm->fw->ucode_capa.capa[0] &
567 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
568 hw->wiphy->features |=
569 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
570
571 if (mvm->fw->ucode_capa.capa[0] &
572 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
573 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
574
575 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
576
577 /* currently FW API supports only one optional cipher scheme */
578 if (mvm->fw->cs[0].cipher) {
579 mvm->hw->n_cipher_schemes = 1;
580 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
581 }
582
583 #ifdef CONFIG_PM_SLEEP
584 if (iwl_mvm_is_d0i3_supported(mvm) &&
585 device_can_wakeup(mvm->trans->dev)) {
586 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
587 hw->wiphy->wowlan = &mvm->wowlan;
588 }
589
590 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
591 mvm->trans->ops->d3_suspend &&
592 mvm->trans->ops->d3_resume &&
593 device_can_wakeup(mvm->trans->dev)) {
594 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
595 WIPHY_WOWLAN_DISCONNECT |
596 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
597 WIPHY_WOWLAN_RFKILL_RELEASE |
598 WIPHY_WOWLAN_NET_DETECT;
599 if (!iwlwifi_mod_params.sw_crypto)
600 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
601 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
602 WIPHY_WOWLAN_4WAY_HANDSHAKE;
603
604 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
605 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
606 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
607 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
608 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
609 hw->wiphy->wowlan = &mvm->wowlan;
610 }
611 #endif
612
613 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
614 /* assign default bcast filtering configuration */
615 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
616 #endif
617
618 ret = iwl_mvm_leds_init(mvm);
619 if (ret)
620 return ret;
621
622 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
623 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
624 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
625 }
626
627 if (mvm->fw->ucode_capa.capa[0] &
628 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
629 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
630 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
631 }
632
633 ret = ieee80211_register_hw(mvm->hw);
634 if (ret)
635 iwl_mvm_leds_exit(mvm);
636
637 return ret;
638 }
639
640 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
641 struct ieee80211_sta *sta,
642 struct sk_buff *skb)
643 {
644 struct iwl_mvm_sta *mvmsta;
645 bool defer = false;
646
647 /*
648 * double check the IN_D0I3 flag both before and after
649 * taking the spinlock, in order to prevent taking
650 * the spinlock when not needed.
651 */
652 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
653 return false;
654
655 spin_lock(&mvm->d0i3_tx_lock);
656 /*
657 * testing the flag again ensures the skb dequeue
658 * loop (on d0i3 exit) hasn't run yet.
659 */
660 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
661 goto out;
662
663 mvmsta = iwl_mvm_sta_from_mac80211(sta);
664 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
665 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
666 goto out;
667
668 __skb_queue_tail(&mvm->d0i3_tx, skb);
669 ieee80211_stop_queues(mvm->hw);
670
671 /* trigger wakeup */
672 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
673 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
674
675 defer = true;
676 out:
677 spin_unlock(&mvm->d0i3_tx_lock);
678 return defer;
679 }
680
681 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
682 struct ieee80211_tx_control *control,
683 struct sk_buff *skb)
684 {
685 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
686 struct ieee80211_sta *sta = control->sta;
687 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
688 struct ieee80211_hdr *hdr = (void *)skb->data;
689
690 if (iwl_mvm_is_radio_killed(mvm)) {
691 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
692 goto drop;
693 }
694
695 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
696 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
697 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
698 goto drop;
699
700 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
701 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
702 ieee80211_is_mgmt(hdr->frame_control) &&
703 !ieee80211_is_deauth(hdr->frame_control) &&
704 !ieee80211_is_disassoc(hdr->frame_control) &&
705 !ieee80211_is_action(hdr->frame_control)))
706 sta = NULL;
707
708 if (sta) {
709 if (iwl_mvm_defer_tx(mvm, sta, skb))
710 return;
711 if (iwl_mvm_tx_skb(mvm, skb, sta))
712 goto drop;
713 return;
714 }
715
716 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
717 goto drop;
718 return;
719 drop:
720 ieee80211_free_txskb(hw, skb);
721 }
722
723 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
724 {
725 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
726 return false;
727 return true;
728 }
729
730 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
731 {
732 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
733 return false;
734 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
735 return true;
736
737 /* enabled by default */
738 return true;
739 }
740
741 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
742 struct ieee80211_vif *vif,
743 enum ieee80211_ampdu_mlme_action action,
744 struct ieee80211_sta *sta, u16 tid,
745 u16 *ssn, u8 buf_size)
746 {
747 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
748 int ret;
749 bool tx_agg_ref = false;
750
751 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
752 sta->addr, tid, action);
753
754 if (!(mvm->nvm_data->sku_cap_11n_enable))
755 return -EACCES;
756
757 /* return from D0i3 before starting a new Tx aggregation */
758 switch (action) {
759 case IEEE80211_AMPDU_TX_START:
760 case IEEE80211_AMPDU_TX_STOP_CONT:
761 case IEEE80211_AMPDU_TX_STOP_FLUSH:
762 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
763 case IEEE80211_AMPDU_TX_OPERATIONAL:
764 /*
765 * for tx start, wait synchronously until D0i3 exit to
766 * get the correct sequence number for the tid.
767 * additionally, some other ampdu actions use direct
768 * target access, which is not handled automatically
769 * by the trans layer (unlike commands), so wait for
770 * d0i3 exit in these cases as well.
771 */
772 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
773 if (ret)
774 return ret;
775
776 tx_agg_ref = true;
777 break;
778 default:
779 break;
780 }
781
782 mutex_lock(&mvm->mutex);
783
784 switch (action) {
785 case IEEE80211_AMPDU_RX_START:
786 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
787 ret = -EINVAL;
788 break;
789 }
790 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
791 break;
792 case IEEE80211_AMPDU_RX_STOP:
793 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
794 break;
795 case IEEE80211_AMPDU_TX_START:
796 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
797 ret = -EINVAL;
798 break;
799 }
800 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
801 break;
802 case IEEE80211_AMPDU_TX_STOP_CONT:
803 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
804 break;
805 case IEEE80211_AMPDU_TX_STOP_FLUSH:
806 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
807 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
808 break;
809 case IEEE80211_AMPDU_TX_OPERATIONAL:
810 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
811 break;
812 default:
813 WARN_ON_ONCE(1);
814 ret = -EINVAL;
815 break;
816 }
817 mutex_unlock(&mvm->mutex);
818
819 /*
820 * If the tid is marked as started, we won't use it for offloaded
821 * traffic on the next D0i3 entry. It's safe to unref.
822 */
823 if (tx_agg_ref)
824 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
825
826 return ret;
827 }
828
829 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
830 struct ieee80211_vif *vif)
831 {
832 struct iwl_mvm *mvm = data;
833 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
834
835 mvmvif->uploaded = false;
836 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
837
838 spin_lock_bh(&mvm->time_event_lock);
839 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
840 spin_unlock_bh(&mvm->time_event_lock);
841
842 mvmvif->phy_ctxt = NULL;
843 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
844 }
845
846 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
847 const void *data, size_t datalen)
848 {
849 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
850 ssize_t bytes_read;
851 ssize_t bytes_read_trans;
852
853 if (offset < dump_ptrs->op_mode_len) {
854 bytes_read = min_t(ssize_t, count,
855 dump_ptrs->op_mode_len - offset);
856 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
857 bytes_read);
858 offset += bytes_read;
859 count -= bytes_read;
860
861 if (count == 0)
862 return bytes_read;
863 } else {
864 bytes_read = 0;
865 }
866
867 if (!dump_ptrs->trans_ptr)
868 return bytes_read;
869
870 offset -= dump_ptrs->op_mode_len;
871 bytes_read_trans = min_t(ssize_t, count,
872 dump_ptrs->trans_ptr->len - offset);
873 memcpy(buffer + bytes_read,
874 (u8 *)dump_ptrs->trans_ptr->data + offset,
875 bytes_read_trans);
876
877 return bytes_read + bytes_read_trans;
878 }
879
880 static void iwl_mvm_free_coredump(const void *data)
881 {
882 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
883
884 vfree(fw_error_dump->op_mode_ptr);
885 vfree(fw_error_dump->trans_ptr);
886 kfree(fw_error_dump);
887 }
888
889 static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
890 struct iwl_fw_error_dump_data **dump_data)
891 {
892 struct iwl_fw_error_dump_fifo *fifo_hdr;
893 u32 *fifo_data;
894 u32 fifo_len;
895 unsigned long flags;
896 int i, j;
897
898 if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
899 return;
900
901 /* Pull RXF data from all RXFs */
902 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
903 /*
904 * Keep aside the additional offset that might be needed for
905 * next RXF
906 */
907 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
908
909 fifo_hdr = (void *)(*dump_data)->data;
910 fifo_data = (void *)fifo_hdr->data;
911 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
912
913 /* No need to try to read the data if the length is 0 */
914 if (fifo_len == 0)
915 continue;
916
917 /* Add a TLV for the RXF */
918 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
919 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
920
921 fifo_hdr->fifo_num = cpu_to_le32(i);
922 fifo_hdr->available_bytes =
923 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
924 RXF_RD_D_SPACE +
925 offset_diff));
926 fifo_hdr->wr_ptr =
927 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
928 RXF_RD_WR_PTR +
929 offset_diff));
930 fifo_hdr->rd_ptr =
931 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
932 RXF_RD_RD_PTR +
933 offset_diff));
934 fifo_hdr->fence_ptr =
935 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
936 RXF_RD_FENCE_PTR +
937 offset_diff));
938 fifo_hdr->fence_mode =
939 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
940 RXF_SET_FENCE_MODE +
941 offset_diff));
942
943 /* Lock fence */
944 iwl_trans_write_prph(mvm->trans,
945 RXF_SET_FENCE_MODE + offset_diff, 0x1);
946 /* Set fence pointer to the same place like WR pointer */
947 iwl_trans_write_prph(mvm->trans,
948 RXF_LD_WR2FENCE + offset_diff, 0x1);
949 /* Set fence offset */
950 iwl_trans_write_prph(mvm->trans,
951 RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
952 0x0);
953
954 /* Read FIFO */
955 fifo_len /= sizeof(u32); /* Size in DWORDS */
956 for (j = 0; j < fifo_len; j++)
957 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
958 RXF_FIFO_RD_FENCE_INC +
959 offset_diff);
960 *dump_data = iwl_fw_error_next_data(*dump_data);
961 }
962
963 /* Pull TXF data from all TXFs */
964 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
965 /* Mark the number of TXF we're pulling now */
966 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
967
968 fifo_hdr = (void *)(*dump_data)->data;
969 fifo_data = (void *)fifo_hdr->data;
970 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
971
972 /* No need to try to read the data if the length is 0 */
973 if (fifo_len == 0)
974 continue;
975
976 /* Add a TLV for the FIFO */
977 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
978 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
979
980 fifo_hdr->fifo_num = cpu_to_le32(i);
981 fifo_hdr->available_bytes =
982 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
983 TXF_FIFO_ITEM_CNT));
984 fifo_hdr->wr_ptr =
985 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
986 TXF_WR_PTR));
987 fifo_hdr->rd_ptr =
988 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
989 TXF_RD_PTR));
990 fifo_hdr->fence_ptr =
991 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
992 TXF_FENCE_PTR));
993 fifo_hdr->fence_mode =
994 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
995 TXF_LOCK_FENCE));
996
997 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
998 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
999 TXF_WR_PTR);
1000
1001 /* Dummy-read to advance the read pointer to the head */
1002 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
1003
1004 /* Read FIFO */
1005 fifo_len /= sizeof(u32); /* Size in DWORDS */
1006 for (j = 0; j < fifo_len; j++)
1007 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
1008 TXF_READ_MODIFY_DATA);
1009 *dump_data = iwl_fw_error_next_data(*dump_data);
1010 }
1011
1012 iwl_trans_release_nic_access(mvm->trans, &flags);
1013 }
1014
1015 void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
1016 {
1017 if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert ||
1018 !mvm->fw_dump_desc)
1019 return;
1020
1021 kfree(mvm->fw_dump_desc);
1022 mvm->fw_dump_desc = NULL;
1023 }
1024
1025 #define IWL8260_ICCM_OFFSET 0x44000 /* Only for B-step */
1026 #define IWL8260_ICCM_LEN 0xC000 /* Only for B-step */
1027
1028 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
1029 {
1030 struct iwl_fw_error_dump_file *dump_file;
1031 struct iwl_fw_error_dump_data *dump_data;
1032 struct iwl_fw_error_dump_info *dump_info;
1033 struct iwl_fw_error_dump_mem *dump_mem;
1034 struct iwl_fw_error_dump_trigger_desc *dump_trig;
1035 struct iwl_mvm_dump_ptrs *fw_error_dump;
1036 u32 sram_len, sram_ofs;
1037 u32 file_len, fifo_data_len = 0;
1038 u32 smem_len = mvm->cfg->smem_len;
1039 u32 sram2_len = mvm->cfg->dccm2_len;
1040
1041 lockdep_assert_held(&mvm->mutex);
1042
1043 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
1044 if (!fw_error_dump)
1045 return;
1046
1047 /* SRAM - include stack CCM if driver knows the values for it */
1048 if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
1049 const struct fw_img *img;
1050
1051 img = &mvm->fw->img[mvm->cur_ucode];
1052 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1053 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
1054 } else {
1055 sram_ofs = mvm->cfg->dccm_offset;
1056 sram_len = mvm->cfg->dccm_len;
1057 }
1058
1059 /* reading RXF/TXF sizes */
1060 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
1061 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
1062 int i;
1063
1064 fifo_data_len = 0;
1065
1066 /* Count RXF size */
1067 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
1068 if (!mem_cfg->rxfifo_size[i])
1069 continue;
1070
1071 /* Add header info */
1072 fifo_data_len += mem_cfg->rxfifo_size[i] +
1073 sizeof(*dump_data) +
1074 sizeof(struct iwl_fw_error_dump_fifo);
1075 }
1076
1077 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
1078 if (!mem_cfg->txfifo_size[i])
1079 continue;
1080
1081 /* Add header info */
1082 fifo_data_len += mem_cfg->txfifo_size[i] +
1083 sizeof(*dump_data) +
1084 sizeof(struct iwl_fw_error_dump_fifo);
1085 }
1086 }
1087
1088 file_len = sizeof(*dump_file) +
1089 sizeof(*dump_data) * 2 +
1090 sram_len + sizeof(*dump_mem) +
1091 fifo_data_len +
1092 sizeof(*dump_info);
1093
1094 /*
1095 * In 8000 HW family B-step include the ICCM (which resides separately)
1096 */
1097 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1098 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP)
1099 file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
1100 IWL8260_ICCM_LEN;
1101
1102 if (mvm->fw_dump_desc)
1103 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
1104 mvm->fw_dump_desc->len;
1105
1106 /* Make room for the SMEM, if it exists */
1107 if (smem_len)
1108 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
1109
1110 /* Make room for the secondary SRAM, if it exists */
1111 if (sram2_len)
1112 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
1113
1114 dump_file = vzalloc(file_len);
1115 if (!dump_file) {
1116 kfree(fw_error_dump);
1117 iwl_mvm_free_fw_dump_desc(mvm);
1118 return;
1119 }
1120
1121 fw_error_dump->op_mode_ptr = dump_file;
1122
1123 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
1124 dump_data = (void *)dump_file->data;
1125
1126 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
1127 dump_data->len = cpu_to_le32(sizeof(*dump_info));
1128 dump_info = (void *) dump_data->data;
1129 dump_info->device_family =
1130 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
1131 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
1132 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
1133 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
1134 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
1135 sizeof(dump_info->fw_human_readable));
1136 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1137 sizeof(dump_info->dev_human_readable));
1138 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1139 sizeof(dump_info->bus_human_readable));
1140
1141 dump_data = iwl_fw_error_next_data(dump_data);
1142 /* We only dump the FIFOs if the FW is in error state */
1143 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1144 iwl_mvm_dump_fifos(mvm, &dump_data);
1145
1146 if (mvm->fw_dump_desc) {
1147 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
1148 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
1149 mvm->fw_dump_desc->len);
1150 dump_trig = (void *)dump_data->data;
1151 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
1152 sizeof(*dump_trig) + mvm->fw_dump_desc->len);
1153
1154 /* now we can free this copy */
1155 iwl_mvm_free_fw_dump_desc(mvm);
1156 dump_data = iwl_fw_error_next_data(dump_data);
1157 }
1158
1159 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1160 dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1161 dump_mem = (void *)dump_data->data;
1162 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1163 dump_mem->offset = cpu_to_le32(sram_ofs);
1164 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
1165 sram_len);
1166
1167 if (smem_len) {
1168 dump_data = iwl_fw_error_next_data(dump_data);
1169 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1170 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1171 dump_mem = (void *)dump_data->data;
1172 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1173 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
1174 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
1175 dump_mem->data, smem_len);
1176 }
1177
1178 if (sram2_len) {
1179 dump_data = iwl_fw_error_next_data(dump_data);
1180 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1181 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1182 dump_mem = (void *)dump_data->data;
1183 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1184 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1185 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1186 dump_mem->data, sram2_len);
1187 }
1188
1189 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1190 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) {
1191 dump_data = iwl_fw_error_next_data(dump_data);
1192 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1193 dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN +
1194 sizeof(*dump_mem));
1195 dump_mem = (void *)dump_data->data;
1196 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1197 dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET);
1198 iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET,
1199 dump_mem->data, IWL8260_ICCM_LEN);
1200 }
1201
1202 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
1203 fw_error_dump->op_mode_len = file_len;
1204 if (fw_error_dump->trans_ptr)
1205 file_len += fw_error_dump->trans_ptr->len;
1206 dump_file->file_len = cpu_to_le32(file_len);
1207
1208 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1209 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
1210
1211 clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
1212 }
1213
1214 struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
1215 .trig_desc = {
1216 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
1217 },
1218 };
1219
1220 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1221 {
1222 /* clear the D3 reconfig, we only need it to avoid dumping a
1223 * firmware coredump on reconfiguration, we shouldn't do that
1224 * on D3->D0 transition
1225 */
1226 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1227 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1228 iwl_mvm_fw_error_dump(mvm);
1229 }
1230
1231 /* cleanup all stale references (scan, roc), but keep the
1232 * ucode_down ref until reconfig is complete
1233 */
1234 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1235
1236 iwl_trans_stop_device(mvm->trans);
1237
1238 mvm->scan_status = 0;
1239 mvm->ps_disabled = false;
1240 mvm->calibrating = false;
1241
1242 /* just in case one was running */
1243 ieee80211_remain_on_channel_expired(mvm->hw);
1244
1245 ieee80211_iterate_active_interfaces_atomic(
1246 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1247 iwl_mvm_cleanup_iterator, mvm);
1248
1249 mvm->p2p_device_vif = NULL;
1250 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1251
1252 iwl_mvm_reset_phy_ctxts(mvm);
1253 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1254 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1255 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1256 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1257 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1258 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1259 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1260 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1261 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1262
1263 ieee80211_wake_queues(mvm->hw);
1264
1265 /* clear any stale d0i3 state */
1266 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1267
1268 mvm->vif_count = 0;
1269 mvm->rx_ba_sessions = 0;
1270 mvm->fw_dbg_conf = FW_DBG_INVALID;
1271
1272 /* keep statistics ticking */
1273 iwl_mvm_accu_radio_stats(mvm);
1274 }
1275
1276 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1277 {
1278 int ret;
1279
1280 lockdep_assert_held(&mvm->mutex);
1281
1282 /* Clean up some internal and mac80211 state on restart */
1283 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1284 iwl_mvm_restart_cleanup(mvm);
1285
1286 ret = iwl_mvm_up(mvm);
1287
1288 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1289 /* Something went wrong - we need to finish some cleanup
1290 * that normally iwl_mvm_mac_restart_complete() below
1291 * would do.
1292 */
1293 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1294 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1295 }
1296
1297 return ret;
1298 }
1299
1300 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1301 {
1302 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1303 int ret;
1304
1305 /* Some hw restart cleanups must not hold the mutex */
1306 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1307 /*
1308 * Make sure we are out of d0i3. This is needed
1309 * to make sure the reference accounting is correct
1310 * (and there is no stale d0i3_exit_work).
1311 */
1312 wait_event_timeout(mvm->d0i3_exit_waitq,
1313 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1314 &mvm->status),
1315 HZ);
1316 }
1317
1318 mutex_lock(&mvm->mutex);
1319 ret = __iwl_mvm_mac_start(mvm);
1320 mutex_unlock(&mvm->mutex);
1321
1322 return ret;
1323 }
1324
1325 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1326 {
1327 int ret;
1328
1329 mutex_lock(&mvm->mutex);
1330
1331 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1332 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1333 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1334 if (ret)
1335 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1336 ret);
1337
1338 /* allow transport/FW low power modes */
1339 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1340
1341 /*
1342 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1343 * of packets the FW sent out, so we must reconnect.
1344 */
1345 iwl_mvm_teardown_tdls_peers(mvm);
1346
1347 mutex_unlock(&mvm->mutex);
1348 }
1349
1350 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1351 {
1352 bool exit_now;
1353
1354 if (!iwl_mvm_is_d0i3_supported(mvm))
1355 return;
1356
1357 mutex_lock(&mvm->d0i3_suspend_mutex);
1358 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1359 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1360 &mvm->d0i3_suspend_flags);
1361 mutex_unlock(&mvm->d0i3_suspend_mutex);
1362
1363 if (exit_now) {
1364 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1365 _iwl_mvm_exit_d0i3(mvm);
1366 }
1367
1368 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1369 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1370 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1371 &mvm->status),
1372 HZ))
1373 WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1374 }
1375
1376 static void
1377 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1378 enum ieee80211_reconfig_type reconfig_type)
1379 {
1380 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1381
1382 switch (reconfig_type) {
1383 case IEEE80211_RECONFIG_TYPE_RESTART:
1384 iwl_mvm_restart_complete(mvm);
1385 break;
1386 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1387 iwl_mvm_resume_complete(mvm);
1388 break;
1389 }
1390 }
1391
1392 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1393 {
1394 lockdep_assert_held(&mvm->mutex);
1395
1396 /* firmware counters are obviously reset now, but we shouldn't
1397 * partially track so also clear the fw_reset_accu counters.
1398 */
1399 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1400
1401 /*
1402 * Disallow low power states when the FW is down by taking
1403 * the UCODE_DOWN ref. in case of ongoing hw restart the
1404 * ref is already taken, so don't take it again.
1405 */
1406 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1407 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1408
1409 /* async_handlers_wk is now blocked */
1410
1411 /*
1412 * The work item could be running or queued if the
1413 * ROC time event stops just as we get here.
1414 */
1415 cancel_work_sync(&mvm->roc_done_wk);
1416
1417 iwl_trans_stop_device(mvm->trans);
1418
1419 iwl_mvm_async_handlers_purge(mvm);
1420 /* async_handlers_list is empty and will stay empty: HW is stopped */
1421
1422 /* the fw is stopped, the aux sta is dead: clean up driver state */
1423 iwl_mvm_del_aux_sta(mvm);
1424
1425 /*
1426 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1427 * won't be called in this case).
1428 */
1429 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1430
1431 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1432 * make sure there's nothing left there and warn if any is found.
1433 */
1434 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
1435 int i;
1436
1437 for (i = 0; i < mvm->max_scans; i++) {
1438 if (WARN_ONCE(mvm->scan_uid[i],
1439 "UMAC scan UID %d was not cleaned\n",
1440 mvm->scan_uid[i]))
1441 mvm->scan_uid[i] = 0;
1442 }
1443 }
1444
1445 mvm->ucode_loaded = false;
1446 }
1447
1448 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1449 {
1450 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1451
1452 flush_work(&mvm->d0i3_exit_work);
1453 flush_work(&mvm->async_handlers_wk);
1454 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1455 iwl_mvm_free_fw_dump_desc(mvm);
1456
1457 mutex_lock(&mvm->mutex);
1458 __iwl_mvm_mac_stop(mvm);
1459 mutex_unlock(&mvm->mutex);
1460
1461 /*
1462 * The worker might have been waiting for the mutex, let it run and
1463 * discover that its list is now empty.
1464 */
1465 cancel_work_sync(&mvm->async_handlers_wk);
1466 }
1467
1468 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1469 {
1470 u16 i;
1471
1472 lockdep_assert_held(&mvm->mutex);
1473
1474 for (i = 0; i < NUM_PHY_CTX; i++)
1475 if (!mvm->phy_ctxts[i].ref)
1476 return &mvm->phy_ctxts[i];
1477
1478 IWL_ERR(mvm, "No available PHY context\n");
1479 return NULL;
1480 }
1481
1482 static int iwl_mvm_set_tx_power_old(struct iwl_mvm *mvm,
1483 struct ieee80211_vif *vif, s8 tx_power)
1484 {
1485 /* FW is in charge of regulatory enforcement */
1486 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1487 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1488 .pwr_restriction = cpu_to_le16(tx_power),
1489 };
1490
1491 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1492 sizeof(reduce_txpwr_cmd),
1493 &reduce_txpwr_cmd);
1494 }
1495
1496 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1497 s16 tx_power)
1498 {
1499 struct iwl_dev_tx_power_cmd cmd = {
1500 .set_mode = 0,
1501 .mac_context_id =
1502 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1503 .pwr_restriction = cpu_to_le16(8 * tx_power),
1504 };
1505
1506 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_TX_POWER_DEV))
1507 return iwl_mvm_set_tx_power_old(mvm, vif, tx_power);
1508
1509 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1510 cmd.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1511
1512 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1513 sizeof(cmd), &cmd);
1514 }
1515
1516 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1517 struct ieee80211_vif *vif)
1518 {
1519 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1520 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1521 int ret;
1522
1523 mvmvif->mvm = mvm;
1524
1525 /*
1526 * make sure D0i3 exit is completed, otherwise a target access
1527 * during tx queue configuration could be done when still in
1528 * D0i3 state.
1529 */
1530 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1531 if (ret)
1532 return ret;
1533
1534 /*
1535 * Not much to do here. The stack will not allow interface
1536 * types or combinations that we didn't advertise, so we
1537 * don't really have to check the types.
1538 */
1539
1540 mutex_lock(&mvm->mutex);
1541
1542 /* make sure that beacon statistics don't go backwards with FW reset */
1543 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1544 mvmvif->beacon_stats.accu_num_beacons +=
1545 mvmvif->beacon_stats.num_beacons;
1546
1547 /* Allocate resources for the MAC context, and add it to the fw */
1548 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1549 if (ret)
1550 goto out_unlock;
1551
1552 /* Counting number of interfaces is needed for legacy PM */
1553 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1554 mvm->vif_count++;
1555
1556 /*
1557 * The AP binding flow can be done only after the beacon
1558 * template is configured (which happens only in the mac80211
1559 * start_ap() flow), and adding the broadcast station can happen
1560 * only after the binding.
1561 * In addition, since modifying the MAC before adding a bcast
1562 * station is not allowed by the FW, delay the adding of MAC context to
1563 * the point where we can also add the bcast station.
1564 * In short: there's not much we can do at this point, other than
1565 * allocating resources :)
1566 */
1567 if (vif->type == NL80211_IFTYPE_AP ||
1568 vif->type == NL80211_IFTYPE_ADHOC) {
1569 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1570 if (ret) {
1571 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1572 goto out_release;
1573 }
1574
1575 iwl_mvm_vif_dbgfs_register(mvm, vif);
1576 goto out_unlock;
1577 }
1578
1579 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1580 if (ret)
1581 goto out_release;
1582
1583 ret = iwl_mvm_power_update_mac(mvm);
1584 if (ret)
1585 goto out_remove_mac;
1586
1587 /* beacon filtering */
1588 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1589 if (ret)
1590 goto out_remove_mac;
1591
1592 if (!mvm->bf_allowed_vif &&
1593 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1594 mvm->bf_allowed_vif = mvmvif;
1595 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1596 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1597 }
1598
1599 /*
1600 * P2P_DEVICE interface does not have a channel context assigned to it,
1601 * so a dedicated PHY context is allocated to it and the corresponding
1602 * MAC context is bound to it at this stage.
1603 */
1604 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1605
1606 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1607 if (!mvmvif->phy_ctxt) {
1608 ret = -ENOSPC;
1609 goto out_free_bf;
1610 }
1611
1612 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1613 ret = iwl_mvm_binding_add_vif(mvm, vif);
1614 if (ret)
1615 goto out_unref_phy;
1616
1617 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1618 if (ret)
1619 goto out_unbind;
1620
1621 /* Save a pointer to p2p device vif, so it can later be used to
1622 * update the p2p device MAC when a GO is started/stopped */
1623 mvm->p2p_device_vif = vif;
1624 }
1625
1626 iwl_mvm_vif_dbgfs_register(mvm, vif);
1627 goto out_unlock;
1628
1629 out_unbind:
1630 iwl_mvm_binding_remove_vif(mvm, vif);
1631 out_unref_phy:
1632 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1633 out_free_bf:
1634 if (mvm->bf_allowed_vif == mvmvif) {
1635 mvm->bf_allowed_vif = NULL;
1636 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1637 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1638 }
1639 out_remove_mac:
1640 mvmvif->phy_ctxt = NULL;
1641 iwl_mvm_mac_ctxt_remove(mvm, vif);
1642 out_release:
1643 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1644 mvm->vif_count--;
1645
1646 iwl_mvm_mac_ctxt_release(mvm, vif);
1647 out_unlock:
1648 mutex_unlock(&mvm->mutex);
1649
1650 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1651
1652 return ret;
1653 }
1654
1655 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1656 struct ieee80211_vif *vif)
1657 {
1658 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1659
1660 if (tfd_msk) {
1661 /*
1662 * mac80211 first removes all the stations of the vif and
1663 * then removes the vif. When it removes a station it also
1664 * flushes the AMPDU session. So by now, all the AMPDU sessions
1665 * of all the stations of this vif are closed, and the queues
1666 * of these AMPDU sessions are properly closed.
1667 * We still need to take care of the shared queues of the vif.
1668 * Flush them here.
1669 */
1670 mutex_lock(&mvm->mutex);
1671 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1672 mutex_unlock(&mvm->mutex);
1673
1674 /*
1675 * There are transports that buffer a few frames in the host.
1676 * For these, the flush above isn't enough since while we were
1677 * flushing, the transport might have sent more frames to the
1678 * device. To solve this, wait here until the transport is
1679 * empty. Technically, this could have replaced the flush
1680 * above, but flush is much faster than draining. So flush
1681 * first, and drain to make sure we have no frames in the
1682 * transport anymore.
1683 * If a station still had frames on the shared queues, it is
1684 * already marked as draining, so to complete the draining, we
1685 * just need to wait until the transport is empty.
1686 */
1687 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1688 }
1689
1690 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1691 /*
1692 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1693 * We assume here that all the packets sent to the OFFCHANNEL
1694 * queue are sent in ROC session.
1695 */
1696 flush_work(&mvm->roc_done_wk);
1697 } else {
1698 /*
1699 * By now, all the AC queues are empty. The AGG queues are
1700 * empty too. We already got all the Tx responses for all the
1701 * packets in the queues. The drain work can have been
1702 * triggered. Flush it.
1703 */
1704 flush_work(&mvm->sta_drained_wk);
1705 }
1706 }
1707
1708 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1709 struct ieee80211_vif *vif)
1710 {
1711 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1712 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1713
1714 iwl_mvm_prepare_mac_removal(mvm, vif);
1715
1716 mutex_lock(&mvm->mutex);
1717
1718 if (mvm->bf_allowed_vif == mvmvif) {
1719 mvm->bf_allowed_vif = NULL;
1720 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1721 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1722 }
1723
1724 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1725
1726 /*
1727 * For AP/GO interface, the tear down of the resources allocated to the
1728 * interface is be handled as part of the stop_ap flow.
1729 */
1730 if (vif->type == NL80211_IFTYPE_AP ||
1731 vif->type == NL80211_IFTYPE_ADHOC) {
1732 #ifdef CONFIG_NL80211_TESTMODE
1733 if (vif == mvm->noa_vif) {
1734 mvm->noa_vif = NULL;
1735 mvm->noa_duration = 0;
1736 }
1737 #endif
1738 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1739 goto out_release;
1740 }
1741
1742 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1743 mvm->p2p_device_vif = NULL;
1744 iwl_mvm_rm_bcast_sta(mvm, vif);
1745 iwl_mvm_binding_remove_vif(mvm, vif);
1746 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1747 mvmvif->phy_ctxt = NULL;
1748 }
1749
1750 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1751 mvm->vif_count--;
1752
1753 iwl_mvm_power_update_mac(mvm);
1754 iwl_mvm_mac_ctxt_remove(mvm, vif);
1755
1756 out_release:
1757 iwl_mvm_mac_ctxt_release(mvm, vif);
1758 mutex_unlock(&mvm->mutex);
1759 }
1760
1761 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1762 {
1763 return 0;
1764 }
1765
1766 struct iwl_mvm_mc_iter_data {
1767 struct iwl_mvm *mvm;
1768 int port_id;
1769 };
1770
1771 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1772 struct ieee80211_vif *vif)
1773 {
1774 struct iwl_mvm_mc_iter_data *data = _data;
1775 struct iwl_mvm *mvm = data->mvm;
1776 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1777 int ret, len;
1778
1779 /* if we don't have free ports, mcast frames will be dropped */
1780 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1781 return;
1782
1783 if (vif->type != NL80211_IFTYPE_STATION ||
1784 !vif->bss_conf.assoc)
1785 return;
1786
1787 cmd->port_id = data->port_id++;
1788 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1789 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1790
1791 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1792 if (ret)
1793 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1794 }
1795
1796 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1797 {
1798 struct iwl_mvm_mc_iter_data iter_data = {
1799 .mvm = mvm,
1800 };
1801
1802 lockdep_assert_held(&mvm->mutex);
1803
1804 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1805 return;
1806
1807 ieee80211_iterate_active_interfaces_atomic(
1808 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1809 iwl_mvm_mc_iface_iterator, &iter_data);
1810 }
1811
1812 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1813 struct netdev_hw_addr_list *mc_list)
1814 {
1815 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1816 struct iwl_mcast_filter_cmd *cmd;
1817 struct netdev_hw_addr *addr;
1818 int addr_count;
1819 bool pass_all;
1820 int len;
1821
1822 addr_count = netdev_hw_addr_list_count(mc_list);
1823 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1824 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1825 if (pass_all)
1826 addr_count = 0;
1827
1828 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1829 cmd = kzalloc(len, GFP_ATOMIC);
1830 if (!cmd)
1831 return 0;
1832
1833 if (pass_all) {
1834 cmd->pass_all = 1;
1835 return (u64)(unsigned long)cmd;
1836 }
1837
1838 netdev_hw_addr_list_for_each(addr, mc_list) {
1839 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1840 cmd->count, addr->addr);
1841 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1842 addr->addr, ETH_ALEN);
1843 cmd->count++;
1844 }
1845
1846 return (u64)(unsigned long)cmd;
1847 }
1848
1849 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1850 unsigned int changed_flags,
1851 unsigned int *total_flags,
1852 u64 multicast)
1853 {
1854 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1855 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1856
1857 mutex_lock(&mvm->mutex);
1858
1859 /* replace previous configuration */
1860 kfree(mvm->mcast_filter_cmd);
1861 mvm->mcast_filter_cmd = cmd;
1862
1863 if (!cmd)
1864 goto out;
1865
1866 iwl_mvm_recalc_multicast(mvm);
1867 out:
1868 mutex_unlock(&mvm->mutex);
1869 *total_flags = 0;
1870 }
1871
1872 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1873 struct iwl_bcast_iter_data {
1874 struct iwl_mvm *mvm;
1875 struct iwl_bcast_filter_cmd *cmd;
1876 u8 current_filter;
1877 };
1878
1879 static void
1880 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1881 const struct iwl_fw_bcast_filter *in_filter,
1882 struct iwl_fw_bcast_filter *out_filter)
1883 {
1884 struct iwl_fw_bcast_filter_attr *attr;
1885 int i;
1886
1887 memcpy(out_filter, in_filter, sizeof(*out_filter));
1888
1889 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1890 attr = &out_filter->attrs[i];
1891
1892 if (!attr->mask)
1893 break;
1894
1895 switch (attr->reserved1) {
1896 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1897 if (vif->bss_conf.arp_addr_cnt != 1) {
1898 attr->mask = 0;
1899 continue;
1900 }
1901
1902 attr->val = vif->bss_conf.arp_addr_list[0];
1903 break;
1904 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1905 attr->val = *(__be32 *)&vif->addr[2];
1906 break;
1907 default:
1908 break;
1909 }
1910 attr->reserved1 = 0;
1911 out_filter->num_attrs++;
1912 }
1913 }
1914
1915 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1916 struct ieee80211_vif *vif)
1917 {
1918 struct iwl_bcast_iter_data *data = _data;
1919 struct iwl_mvm *mvm = data->mvm;
1920 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1921 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1922 struct iwl_fw_bcast_mac *bcast_mac;
1923 int i;
1924
1925 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1926 return;
1927
1928 bcast_mac = &cmd->macs[mvmvif->id];
1929
1930 /*
1931 * enable filtering only for associated stations, but not for P2P
1932 * Clients
1933 */
1934 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1935 !vif->bss_conf.assoc)
1936 return;
1937
1938 bcast_mac->default_discard = 1;
1939
1940 /* copy all configured filters */
1941 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1942 /*
1943 * Make sure we don't exceed our filters limit.
1944 * if there is still a valid filter to be configured,
1945 * be on the safe side and just allow bcast for this mac.
1946 */
1947 if (WARN_ON_ONCE(data->current_filter >=
1948 ARRAY_SIZE(cmd->filters))) {
1949 bcast_mac->default_discard = 0;
1950 bcast_mac->attached_filters = 0;
1951 break;
1952 }
1953
1954 iwl_mvm_set_bcast_filter(vif,
1955 &mvm->bcast_filters[i],
1956 &cmd->filters[data->current_filter]);
1957
1958 /* skip current filter if it contains no attributes */
1959 if (!cmd->filters[data->current_filter].num_attrs)
1960 continue;
1961
1962 /* attach the filter to current mac */
1963 bcast_mac->attached_filters |=
1964 cpu_to_le16(BIT(data->current_filter));
1965
1966 data->current_filter++;
1967 }
1968 }
1969
1970 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1971 struct iwl_bcast_filter_cmd *cmd)
1972 {
1973 struct iwl_bcast_iter_data iter_data = {
1974 .mvm = mvm,
1975 .cmd = cmd,
1976 };
1977
1978 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1979 return false;
1980
1981 memset(cmd, 0, sizeof(*cmd));
1982 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1983 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1984
1985 #ifdef CONFIG_IWLWIFI_DEBUGFS
1986 /* use debugfs filters/macs if override is configured */
1987 if (mvm->dbgfs_bcast_filtering.override) {
1988 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1989 sizeof(cmd->filters));
1990 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1991 sizeof(cmd->macs));
1992 return true;
1993 }
1994 #endif
1995
1996 /* if no filters are configured, do nothing */
1997 if (!mvm->bcast_filters)
1998 return false;
1999
2000 /* configure and attach these filters for each associated sta vif */
2001 ieee80211_iterate_active_interfaces(
2002 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2003 iwl_mvm_bcast_filter_iterator, &iter_data);
2004
2005 return true;
2006 }
2007 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2008 struct ieee80211_vif *vif)
2009 {
2010 struct iwl_bcast_filter_cmd cmd;
2011
2012 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
2013 return 0;
2014
2015 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
2016 return 0;
2017
2018 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
2019 sizeof(cmd), &cmd);
2020 }
2021 #else
2022 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2023 struct ieee80211_vif *vif)
2024 {
2025 return 0;
2026 }
2027 #endif
2028
2029 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2030 struct ieee80211_vif *vif,
2031 struct ieee80211_bss_conf *bss_conf,
2032 u32 changes)
2033 {
2034 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2035 int ret;
2036
2037 /*
2038 * Re-calculate the tsf id, as the master-slave relations depend on the
2039 * beacon interval, which was not known when the station interface was
2040 * added.
2041 */
2042 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
2043 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2044
2045 /*
2046 * If we're not associated yet, take the (new) BSSID before associating
2047 * so the firmware knows. If we're already associated, then use the old
2048 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2049 * branch for disassociation below.
2050 */
2051 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2052 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2053
2054 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2055 if (ret)
2056 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2057
2058 /* after sending it once, adopt mac80211 data */
2059 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2060 mvmvif->associated = bss_conf->assoc;
2061
2062 if (changes & BSS_CHANGED_ASSOC) {
2063 if (bss_conf->assoc) {
2064 /* clear statistics to get clean beacon counter */
2065 iwl_mvm_request_statistics(mvm, true);
2066 memset(&mvmvif->beacon_stats, 0,
2067 sizeof(mvmvif->beacon_stats));
2068
2069 /* add quota for this interface */
2070 ret = iwl_mvm_update_quotas(mvm, true, NULL);
2071 if (ret) {
2072 IWL_ERR(mvm, "failed to update quotas\n");
2073 return;
2074 }
2075
2076 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2077 &mvm->status)) {
2078 /*
2079 * If we're restarting then the firmware will
2080 * obviously have lost synchronisation with
2081 * the AP. It will attempt to synchronise by
2082 * itself, but we can make it more reliable by
2083 * scheduling a session protection time event.
2084 *
2085 * The firmware needs to receive a beacon to
2086 * catch up with synchronisation, use 110% of
2087 * the beacon interval.
2088 *
2089 * Set a large maximum delay to allow for more
2090 * than a single interface.
2091 */
2092 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2093 iwl_mvm_protect_session(mvm, vif, dur, dur,
2094 5 * dur, false);
2095 }
2096
2097 iwl_mvm_sf_update(mvm, vif, false);
2098 iwl_mvm_power_vif_assoc(mvm, vif);
2099 if (vif->p2p) {
2100 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2101 iwl_mvm_update_smps(mvm, vif,
2102 IWL_MVM_SMPS_REQ_PROT,
2103 IEEE80211_SMPS_DYNAMIC);
2104 }
2105 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2106 /*
2107 * If update fails - SF might be running in associated
2108 * mode while disassociated - which is forbidden.
2109 */
2110 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2111 "Failed to update SF upon disassociation\n");
2112
2113 /* remove AP station now that the MAC is unassoc */
2114 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
2115 if (ret)
2116 IWL_ERR(mvm, "failed to remove AP station\n");
2117
2118 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2119 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
2120 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
2121 /* remove quota for this interface */
2122 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2123 if (ret)
2124 IWL_ERR(mvm, "failed to update quotas\n");
2125
2126 if (vif->p2p)
2127 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2128
2129 /* this will take the cleared BSSID from bss_conf */
2130 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2131 if (ret)
2132 IWL_ERR(mvm,
2133 "failed to update MAC %pM (clear after unassoc)\n",
2134 vif->addr);
2135 }
2136
2137 iwl_mvm_recalc_multicast(mvm);
2138 iwl_mvm_configure_bcast_filter(mvm, vif);
2139
2140 /* reset rssi values */
2141 mvmvif->bf_data.ave_beacon_signal = 0;
2142
2143 iwl_mvm_bt_coex_vif_change(mvm);
2144 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2145 IEEE80211_SMPS_AUTOMATIC);
2146 } else if (changes & BSS_CHANGED_BEACON_INFO) {
2147 /*
2148 * We received a beacon _after_ association so
2149 * remove the session protection.
2150 */
2151 iwl_mvm_remove_time_event(mvm, mvmvif,
2152 &mvmvif->time_event_data);
2153 }
2154
2155 if (changes & BSS_CHANGED_BEACON_INFO) {
2156 iwl_mvm_sf_update(mvm, vif, false);
2157 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2158 }
2159
2160 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
2161 ret = iwl_mvm_power_update_mac(mvm);
2162 if (ret)
2163 IWL_ERR(mvm, "failed to update power mode\n");
2164 }
2165
2166 if (changes & BSS_CHANGED_TXPOWER) {
2167 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2168 bss_conf->txpower);
2169 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2170 }
2171
2172 if (changes & BSS_CHANGED_CQM) {
2173 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2174 /* reset cqm events tracking */
2175 mvmvif->bf_data.last_cqm_event = 0;
2176 if (mvmvif->bf_data.bf_enabled) {
2177 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2178 if (ret)
2179 IWL_ERR(mvm,
2180 "failed to update CQM thresholds\n");
2181 }
2182 }
2183
2184 if (changes & BSS_CHANGED_ARP_FILTER) {
2185 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2186 iwl_mvm_configure_bcast_filter(mvm, vif);
2187 }
2188 }
2189
2190 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2191 struct ieee80211_vif *vif)
2192 {
2193 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2194 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2195 int ret;
2196
2197 /*
2198 * iwl_mvm_mac_ctxt_add() might read directly from the device
2199 * (the system time), so make sure it is available.
2200 */
2201 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2202 if (ret)
2203 return ret;
2204
2205 mutex_lock(&mvm->mutex);
2206
2207 /* Send the beacon template */
2208 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2209 if (ret)
2210 goto out_unlock;
2211
2212 /*
2213 * Re-calculate the tsf id, as the master-slave relations depend on the
2214 * beacon interval, which was not known when the AP interface was added.
2215 */
2216 if (vif->type == NL80211_IFTYPE_AP)
2217 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2218
2219 /* Add the mac context */
2220 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2221 if (ret)
2222 goto out_unlock;
2223
2224 /* Perform the binding */
2225 ret = iwl_mvm_binding_add_vif(mvm, vif);
2226 if (ret)
2227 goto out_remove;
2228
2229 /* Send the bcast station. At this stage the TBTT and DTIM time events
2230 * are added and applied to the scheduler */
2231 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2232 if (ret)
2233 goto out_unbind;
2234
2235 /* must be set before quota calculations */
2236 mvmvif->ap_ibss_active = true;
2237
2238 /* power updated needs to be done before quotas */
2239 iwl_mvm_power_update_mac(mvm);
2240
2241 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2242 if (ret)
2243 goto out_quota_failed;
2244
2245 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2246 if (vif->p2p && mvm->p2p_device_vif)
2247 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2248
2249 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2250
2251 iwl_mvm_bt_coex_vif_change(mvm);
2252
2253 /* we don't support TDLS during DCM */
2254 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2255 iwl_mvm_teardown_tdls_peers(mvm);
2256
2257 goto out_unlock;
2258
2259 out_quota_failed:
2260 iwl_mvm_power_update_mac(mvm);
2261 mvmvif->ap_ibss_active = false;
2262 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2263 out_unbind:
2264 iwl_mvm_binding_remove_vif(mvm, vif);
2265 out_remove:
2266 iwl_mvm_mac_ctxt_remove(mvm, vif);
2267 out_unlock:
2268 mutex_unlock(&mvm->mutex);
2269 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2270 return ret;
2271 }
2272
2273 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2274 struct ieee80211_vif *vif)
2275 {
2276 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2277 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2278
2279 iwl_mvm_prepare_mac_removal(mvm, vif);
2280
2281 mutex_lock(&mvm->mutex);
2282
2283 /* Handle AP stop while in CSA */
2284 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2285 iwl_mvm_remove_time_event(mvm, mvmvif,
2286 &mvmvif->time_event_data);
2287 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2288 }
2289
2290 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2291 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2292 mvm->csa_tx_block_bcn_timeout = 0;
2293 }
2294
2295 mvmvif->ap_ibss_active = false;
2296 mvm->ap_last_beacon_gp2 = 0;
2297
2298 iwl_mvm_bt_coex_vif_change(mvm);
2299
2300 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2301
2302 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2303 if (vif->p2p && mvm->p2p_device_vif)
2304 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2305
2306 iwl_mvm_update_quotas(mvm, false, NULL);
2307 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2308 iwl_mvm_binding_remove_vif(mvm, vif);
2309
2310 iwl_mvm_power_update_mac(mvm);
2311
2312 iwl_mvm_mac_ctxt_remove(mvm, vif);
2313
2314 mutex_unlock(&mvm->mutex);
2315 }
2316
2317 static void
2318 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2319 struct ieee80211_vif *vif,
2320 struct ieee80211_bss_conf *bss_conf,
2321 u32 changes)
2322 {
2323 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2324
2325 /* Changes will be applied when the AP/IBSS is started */
2326 if (!mvmvif->ap_ibss_active)
2327 return;
2328
2329 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2330 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2331 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2332 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2333
2334 /* Need to send a new beacon template to the FW */
2335 if (changes & BSS_CHANGED_BEACON &&
2336 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2337 IWL_WARN(mvm, "Failed updating beacon data\n");
2338
2339 if (changes & BSS_CHANGED_TXPOWER) {
2340 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2341 bss_conf->txpower);
2342 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2343 }
2344
2345 }
2346
2347 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2348 struct ieee80211_vif *vif,
2349 struct ieee80211_bss_conf *bss_conf,
2350 u32 changes)
2351 {
2352 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2353
2354 /*
2355 * iwl_mvm_bss_info_changed_station() might call
2356 * iwl_mvm_protect_session(), which reads directly from
2357 * the device (the system time), so make sure it is available.
2358 */
2359 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2360 return;
2361
2362 mutex_lock(&mvm->mutex);
2363
2364 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2365 iwl_mvm_scan_offload_stop(mvm, true);
2366
2367 switch (vif->type) {
2368 case NL80211_IFTYPE_STATION:
2369 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2370 break;
2371 case NL80211_IFTYPE_AP:
2372 case NL80211_IFTYPE_ADHOC:
2373 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2374 break;
2375 default:
2376 /* shouldn't happen */
2377 WARN_ON_ONCE(1);
2378 }
2379
2380 mutex_unlock(&mvm->mutex);
2381 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2382 }
2383
2384 static int iwl_mvm_num_scans(struct iwl_mvm *mvm)
2385 {
2386 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK);
2387 }
2388
2389 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
2390 {
2391 /* This looks a bit arbitrary, but the idea is that if we run
2392 * out of possible simultaneous scans and the userspace is
2393 * trying to run a scan type that is already running, we
2394 * return -EBUSY. But if the userspace wants to start a
2395 * different type of scan, we stop the opposite type to make
2396 * space for the new request. The reason is backwards
2397 * compatibility with old wpa_supplicant that wouldn't stop a
2398 * scheduled scan before starting a normal scan.
2399 */
2400
2401 if (iwl_mvm_num_scans(mvm) < mvm->max_scans)
2402 return 0;
2403
2404 /* Use a switch, even though this is a bitmask, so that more
2405 * than one bits set will fall in default and we will warn.
2406 */
2407 switch (type) {
2408 case IWL_MVM_SCAN_REGULAR:
2409 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2410 return -EBUSY;
2411 return iwl_mvm_scan_offload_stop(mvm, true);
2412 case IWL_MVM_SCAN_SCHED:
2413 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2414 return -EBUSY;
2415 return iwl_mvm_cancel_scan(mvm);
2416 default:
2417 WARN_ON(1);
2418 break;
2419 }
2420
2421 return -EIO;
2422 }
2423
2424 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2425 struct ieee80211_vif *vif,
2426 struct ieee80211_scan_request *hw_req)
2427 {
2428 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2429 struct cfg80211_scan_request *req = &hw_req->req;
2430 int ret;
2431
2432 if (req->n_channels == 0 ||
2433 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
2434 return -EINVAL;
2435
2436 mutex_lock(&mvm->mutex);
2437
2438 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2439 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2440 ret = -EBUSY;
2441 goto out;
2442 }
2443
2444 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR);
2445 if (ret)
2446 goto out;
2447
2448 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
2449
2450 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
2451 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
2452 else
2453 ret = iwl_mvm_scan_lmac(mvm, vif, hw_req);
2454
2455 if (ret)
2456 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
2457 out:
2458 mutex_unlock(&mvm->mutex);
2459 return ret;
2460 }
2461
2462 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2463 struct ieee80211_vif *vif)
2464 {
2465 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2466
2467 mutex_lock(&mvm->mutex);
2468
2469 /* Due to a race condition, it's possible that mac80211 asks
2470 * us to stop a hw_scan when it's already stopped. This can
2471 * happen, for instance, if we stopped the scan ourselves,
2472 * called ieee80211_scan_completed() and the userspace called
2473 * cancel scan scan before ieee80211_scan_work() could run.
2474 * To handle that, simply return if the scan is not running.
2475 */
2476 /* FIXME: for now, we ignore this race for UMAC scans, since
2477 * they don't set the scan_status.
2478 */
2479 if ((mvm->scan_status & IWL_MVM_SCAN_REGULAR) ||
2480 (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2481 iwl_mvm_cancel_scan(mvm);
2482
2483 mutex_unlock(&mvm->mutex);
2484 }
2485
2486 static void
2487 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2488 struct ieee80211_sta *sta, u16 tids,
2489 int num_frames,
2490 enum ieee80211_frame_release_type reason,
2491 bool more_data)
2492 {
2493 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2494
2495 /* Called when we need to transmit (a) frame(s) from mac80211 */
2496
2497 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2498 tids, more_data, false);
2499 }
2500
2501 static void
2502 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2503 struct ieee80211_sta *sta, u16 tids,
2504 int num_frames,
2505 enum ieee80211_frame_release_type reason,
2506 bool more_data)
2507 {
2508 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2509
2510 /* Called when we need to transmit (a) frame(s) from agg queue */
2511
2512 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2513 tids, more_data, true);
2514 }
2515
2516 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2517 struct ieee80211_vif *vif,
2518 enum sta_notify_cmd cmd,
2519 struct ieee80211_sta *sta)
2520 {
2521 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2522 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2523 unsigned long txqs = 0, tids = 0;
2524 int tid;
2525
2526 spin_lock_bh(&mvmsta->lock);
2527 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2528 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2529
2530 if (tid_data->state != IWL_AGG_ON &&
2531 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2532 continue;
2533
2534 __set_bit(tid_data->txq_id, &txqs);
2535
2536 if (iwl_mvm_tid_queued(tid_data) == 0)
2537 continue;
2538
2539 __set_bit(tid, &tids);
2540 }
2541
2542 switch (cmd) {
2543 case STA_NOTIFY_SLEEP:
2544 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2545 ieee80211_sta_block_awake(hw, sta, true);
2546
2547 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2548 ieee80211_sta_set_buffered(sta, tid, true);
2549
2550 if (txqs)
2551 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2552 /*
2553 * The fw updates the STA to be asleep. Tx packets on the Tx
2554 * queues to this station will not be transmitted. The fw will
2555 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2556 */
2557 break;
2558 case STA_NOTIFY_AWAKE:
2559 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2560 break;
2561
2562 if (txqs)
2563 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2564 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2565 break;
2566 default:
2567 break;
2568 }
2569 spin_unlock_bh(&mvmsta->lock);
2570 }
2571
2572 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2573 struct ieee80211_vif *vif,
2574 struct ieee80211_sta *sta)
2575 {
2576 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2577 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2578
2579 /*
2580 * This is called before mac80211 does RCU synchronisation,
2581 * so here we already invalidate our internal RCU-protected
2582 * station pointer. The rest of the code will thus no longer
2583 * be able to find the station this way, and we don't rely
2584 * on further RCU synchronisation after the sta_state()
2585 * callback deleted the station.
2586 */
2587 mutex_lock(&mvm->mutex);
2588 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2589 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2590 ERR_PTR(-ENOENT));
2591 mutex_unlock(&mvm->mutex);
2592 }
2593
2594 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2595 const u8 *bssid)
2596 {
2597 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2598 return;
2599
2600 if (iwlwifi_mod_params.uapsd_disable) {
2601 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2602 return;
2603 }
2604
2605 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2606 }
2607
2608 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2609 struct ieee80211_vif *vif,
2610 struct ieee80211_sta *sta,
2611 enum ieee80211_sta_state old_state,
2612 enum ieee80211_sta_state new_state)
2613 {
2614 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2615 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2616 int ret;
2617
2618 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2619 sta->addr, old_state, new_state);
2620
2621 /* this would be a mac80211 bug ... but don't crash */
2622 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2623 return -EINVAL;
2624
2625 /* if a STA is being removed, reuse its ID */
2626 flush_work(&mvm->sta_drained_wk);
2627
2628 mutex_lock(&mvm->mutex);
2629 if (old_state == IEEE80211_STA_NOTEXIST &&
2630 new_state == IEEE80211_STA_NONE) {
2631 /*
2632 * Firmware bug - it'll crash if the beacon interval is less
2633 * than 16. We can't avoid connecting at all, so refuse the
2634 * station state change, this will cause mac80211 to abandon
2635 * attempts to connect to this AP, and eventually wpa_s will
2636 * blacklist the AP...
2637 */
2638 if (vif->type == NL80211_IFTYPE_STATION &&
2639 vif->bss_conf.beacon_int < 16) {
2640 IWL_ERR(mvm,
2641 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2642 sta->addr, vif->bss_conf.beacon_int);
2643 ret = -EINVAL;
2644 goto out_unlock;
2645 }
2646
2647 if (sta->tdls &&
2648 (vif->p2p ||
2649 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2650 IWL_MVM_TDLS_STA_COUNT ||
2651 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2652 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2653 ret = -EBUSY;
2654 goto out_unlock;
2655 }
2656
2657 ret = iwl_mvm_add_sta(mvm, vif, sta);
2658 if (sta->tdls && ret == 0)
2659 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2660 } else if (old_state == IEEE80211_STA_NONE &&
2661 new_state == IEEE80211_STA_AUTH) {
2662 /*
2663 * EBS may be disabled due to previous failures reported by FW.
2664 * Reset EBS status here assuming environment has been changed.
2665 */
2666 mvm->last_ebs_successful = true;
2667 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2668 ret = 0;
2669 } else if (old_state == IEEE80211_STA_AUTH &&
2670 new_state == IEEE80211_STA_ASSOC) {
2671 ret = iwl_mvm_update_sta(mvm, vif, sta);
2672 if (ret == 0)
2673 iwl_mvm_rs_rate_init(mvm, sta,
2674 mvmvif->phy_ctxt->channel->band,
2675 true);
2676 } else if (old_state == IEEE80211_STA_ASSOC &&
2677 new_state == IEEE80211_STA_AUTHORIZED) {
2678
2679 /* we don't support TDLS during DCM */
2680 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2681 iwl_mvm_teardown_tdls_peers(mvm);
2682
2683 /* enable beacon filtering */
2684 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2685 ret = 0;
2686 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2687 new_state == IEEE80211_STA_ASSOC) {
2688 /* disable beacon filtering */
2689 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2690 ret = 0;
2691 } else if (old_state == IEEE80211_STA_ASSOC &&
2692 new_state == IEEE80211_STA_AUTH) {
2693 ret = 0;
2694 } else if (old_state == IEEE80211_STA_AUTH &&
2695 new_state == IEEE80211_STA_NONE) {
2696 ret = 0;
2697 } else if (old_state == IEEE80211_STA_NONE &&
2698 new_state == IEEE80211_STA_NOTEXIST) {
2699 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2700 if (sta->tdls)
2701 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2702 } else {
2703 ret = -EIO;
2704 }
2705 out_unlock:
2706 mutex_unlock(&mvm->mutex);
2707
2708 if (sta->tdls && ret == 0) {
2709 if (old_state == IEEE80211_STA_NOTEXIST &&
2710 new_state == IEEE80211_STA_NONE)
2711 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2712 else if (old_state == IEEE80211_STA_NONE &&
2713 new_state == IEEE80211_STA_NOTEXIST)
2714 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2715 }
2716
2717 return ret;
2718 }
2719
2720 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2721 {
2722 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2723
2724 mvm->rts_threshold = value;
2725
2726 return 0;
2727 }
2728
2729 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2730 struct ieee80211_vif *vif,
2731 struct ieee80211_sta *sta, u32 changed)
2732 {
2733 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2734
2735 if (vif->type == NL80211_IFTYPE_STATION &&
2736 changed & IEEE80211_RC_NSS_CHANGED)
2737 iwl_mvm_sf_update(mvm, vif, false);
2738 }
2739
2740 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2741 struct ieee80211_vif *vif, u16 ac,
2742 const struct ieee80211_tx_queue_params *params)
2743 {
2744 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2745 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2746
2747 mvmvif->queue_params[ac] = *params;
2748
2749 /*
2750 * No need to update right away, we'll get BSS_CHANGED_QOS
2751 * The exception is P2P_DEVICE interface which needs immediate update.
2752 */
2753 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2754 int ret;
2755
2756 mutex_lock(&mvm->mutex);
2757 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2758 mutex_unlock(&mvm->mutex);
2759 return ret;
2760 }
2761 return 0;
2762 }
2763
2764 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2765 struct ieee80211_vif *vif)
2766 {
2767 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2768 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2769 200 + vif->bss_conf.beacon_int);
2770 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2771 100 + vif->bss_conf.beacon_int);
2772
2773 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2774 return;
2775
2776 /*
2777 * iwl_mvm_protect_session() reads directly from the device
2778 * (the system time), so make sure it is available.
2779 */
2780 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2781 return;
2782
2783 mutex_lock(&mvm->mutex);
2784 /* Try really hard to protect the session and hear a beacon */
2785 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2786 mutex_unlock(&mvm->mutex);
2787
2788 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2789 }
2790
2791 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2792 struct ieee80211_vif *vif,
2793 struct cfg80211_sched_scan_request *req,
2794 struct ieee80211_scan_ies *ies)
2795 {
2796 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2797 int ret;
2798
2799 mutex_lock(&mvm->mutex);
2800
2801 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2802 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
2803 ret = -EBUSY;
2804 goto out;
2805 }
2806
2807 if (!vif->bss_conf.idle) {
2808 ret = -EBUSY;
2809 goto out;
2810 }
2811
2812 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_SCHED);
2813 if (ret)
2814 goto out;
2815
2816 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies);
2817
2818 out:
2819 mutex_unlock(&mvm->mutex);
2820 return ret;
2821 }
2822
2823 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2824 struct ieee80211_vif *vif)
2825 {
2826 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2827 int ret;
2828
2829 mutex_lock(&mvm->mutex);
2830
2831 /* Due to a race condition, it's possible that mac80211 asks
2832 * us to stop a sched_scan when it's already stopped. This
2833 * can happen, for instance, if we stopped the scan ourselves,
2834 * called ieee80211_sched_scan_stopped() and the userspace called
2835 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2836 * could run. To handle this, simply return if the scan is
2837 * not running.
2838 */
2839 /* FIXME: for now, we ignore this race for UMAC scans, since
2840 * they don't set the scan_status.
2841 */
2842 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED) &&
2843 !(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2844 mutex_unlock(&mvm->mutex);
2845 return 0;
2846 }
2847
2848 ret = iwl_mvm_scan_offload_stop(mvm, false);
2849 mutex_unlock(&mvm->mutex);
2850 iwl_mvm_wait_for_async_handlers(mvm);
2851
2852 return ret;
2853 }
2854
2855 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2856 enum set_key_cmd cmd,
2857 struct ieee80211_vif *vif,
2858 struct ieee80211_sta *sta,
2859 struct ieee80211_key_conf *key)
2860 {
2861 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2862 int ret;
2863
2864 if (iwlwifi_mod_params.sw_crypto) {
2865 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2866 return -EOPNOTSUPP;
2867 }
2868
2869 switch (key->cipher) {
2870 case WLAN_CIPHER_SUITE_TKIP:
2871 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2872 /* fall-through */
2873 case WLAN_CIPHER_SUITE_CCMP:
2874 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2875 break;
2876 case WLAN_CIPHER_SUITE_AES_CMAC:
2877 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2878 break;
2879 case WLAN_CIPHER_SUITE_WEP40:
2880 case WLAN_CIPHER_SUITE_WEP104:
2881 /* For non-client mode, only use WEP keys for TX as we probably
2882 * don't have a station yet anyway and would then have to keep
2883 * track of the keys, linking them to each of the clients/peers
2884 * as they appear. For now, don't do that, for performance WEP
2885 * offload doesn't really matter much, but we need it for some
2886 * other offload features in client mode.
2887 */
2888 if (vif->type != NL80211_IFTYPE_STATION)
2889 return 0;
2890 break;
2891 default:
2892 /* currently FW supports only one optional cipher scheme */
2893 if (hw->n_cipher_schemes &&
2894 hw->cipher_schemes->cipher == key->cipher)
2895 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2896 else
2897 return -EOPNOTSUPP;
2898 }
2899
2900 mutex_lock(&mvm->mutex);
2901
2902 switch (cmd) {
2903 case SET_KEY:
2904 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2905 vif->type == NL80211_IFTYPE_AP) && !sta) {
2906 /*
2907 * GTK on AP interface is a TX-only key, return 0;
2908 * on IBSS they're per-station and because we're lazy
2909 * we don't support them for RX, so do the same.
2910 */
2911 ret = 0;
2912 key->hw_key_idx = STA_KEY_IDX_INVALID;
2913 break;
2914 }
2915
2916 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2917 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2918 if (ret) {
2919 IWL_WARN(mvm, "set key failed\n");
2920 /*
2921 * can't add key for RX, but we don't need it
2922 * in the device for TX so still return 0
2923 */
2924 key->hw_key_idx = STA_KEY_IDX_INVALID;
2925 ret = 0;
2926 }
2927
2928 break;
2929 case DISABLE_KEY:
2930 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2931 ret = 0;
2932 break;
2933 }
2934
2935 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2936 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2937 break;
2938 default:
2939 ret = -EINVAL;
2940 }
2941
2942 mutex_unlock(&mvm->mutex);
2943 return ret;
2944 }
2945
2946 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2947 struct ieee80211_vif *vif,
2948 struct ieee80211_key_conf *keyconf,
2949 struct ieee80211_sta *sta,
2950 u32 iv32, u16 *phase1key)
2951 {
2952 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2953
2954 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2955 return;
2956
2957 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2958 }
2959
2960
2961 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2962 struct iwl_rx_packet *pkt, void *data)
2963 {
2964 struct iwl_mvm *mvm =
2965 container_of(notif_wait, struct iwl_mvm, notif_wait);
2966 struct iwl_hs20_roc_res *resp;
2967 int resp_len = iwl_rx_packet_payload_len(pkt);
2968 struct iwl_mvm_time_event_data *te_data = data;
2969
2970 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2971 return true;
2972
2973 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2974 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2975 return true;
2976 }
2977
2978 resp = (void *)pkt->data;
2979
2980 IWL_DEBUG_TE(mvm,
2981 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2982 resp->status, resp->event_unique_id);
2983
2984 te_data->uid = le32_to_cpu(resp->event_unique_id);
2985 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2986 te_data->uid);
2987
2988 spin_lock_bh(&mvm->time_event_lock);
2989 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2990 spin_unlock_bh(&mvm->time_event_lock);
2991
2992 return true;
2993 }
2994
2995 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 200
2996 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2997 struct ieee80211_channel *channel,
2998 struct ieee80211_vif *vif,
2999 int duration)
3000 {
3001 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3002 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3003 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3004 static const u8 time_event_response[] = { HOT_SPOT_CMD };
3005 struct iwl_notification_wait wait_time_event;
3006 struct iwl_hs20_roc_req aux_roc_req = {
3007 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3008 .id_and_color =
3009 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3010 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3011 /* Set the channel info data */
3012 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
3013 PHY_BAND_24 : PHY_BAND_5,
3014 .channel_info.channel = channel->hw_value,
3015 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3016 /* Set the time and duration */
3017 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3018 .apply_time_max_delay =
3019 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
3020 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
3021 };
3022
3023 /* Set the node address */
3024 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3025
3026 lockdep_assert_held(&mvm->mutex);
3027
3028 spin_lock_bh(&mvm->time_event_lock);
3029
3030 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3031 spin_unlock_bh(&mvm->time_event_lock);
3032 return -EIO;
3033 }
3034
3035 te_data->vif = vif;
3036 te_data->duration = duration;
3037 te_data->id = HOT_SPOT_CMD;
3038
3039 spin_unlock_bh(&mvm->time_event_lock);
3040
3041 /*
3042 * Use a notification wait, which really just processes the
3043 * command response and doesn't wait for anything, in order
3044 * to be able to process the response and get the UID inside
3045 * the RX path. Using CMD_WANT_SKB doesn't work because it
3046 * stores the buffer and then wakes up this thread, by which
3047 * time another notification (that the time event started)
3048 * might already be processed unsuccessfully.
3049 */
3050 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3051 time_event_response,
3052 ARRAY_SIZE(time_event_response),
3053 iwl_mvm_rx_aux_roc, te_data);
3054
3055 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3056 &aux_roc_req);
3057
3058 if (res) {
3059 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3060 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3061 goto out_clear_te;
3062 }
3063
3064 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3065 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3066 /* should never fail */
3067 WARN_ON_ONCE(res);
3068
3069 if (res) {
3070 out_clear_te:
3071 spin_lock_bh(&mvm->time_event_lock);
3072 iwl_mvm_te_clear_data(mvm, te_data);
3073 spin_unlock_bh(&mvm->time_event_lock);
3074 }
3075
3076 return res;
3077 }
3078
3079 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3080 struct ieee80211_vif *vif,
3081 struct ieee80211_channel *channel,
3082 int duration,
3083 enum ieee80211_roc_type type)
3084 {
3085 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3086 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3087 struct cfg80211_chan_def chandef;
3088 struct iwl_mvm_phy_ctxt *phy_ctxt;
3089 int ret, i;
3090
3091 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3092 duration, type);
3093
3094 flush_work(&mvm->roc_done_wk);
3095
3096 mutex_lock(&mvm->mutex);
3097
3098 switch (vif->type) {
3099 case NL80211_IFTYPE_STATION:
3100 if (mvm->fw->ucode_capa.capa[0] &
3101 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
3102 /* Use aux roc framework (HS20) */
3103 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3104 vif, duration);
3105 goto out_unlock;
3106 }
3107 IWL_ERR(mvm, "hotspot not supported\n");
3108 ret = -EINVAL;
3109 goto out_unlock;
3110 case NL80211_IFTYPE_P2P_DEVICE:
3111 /* handle below */
3112 break;
3113 default:
3114 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3115 ret = -EINVAL;
3116 goto out_unlock;
3117 }
3118
3119 for (i = 0; i < NUM_PHY_CTX; i++) {
3120 phy_ctxt = &mvm->phy_ctxts[i];
3121 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3122 continue;
3123
3124 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3125 /*
3126 * Unbind the P2P_DEVICE from the current PHY context,
3127 * and if the PHY context is not used remove it.
3128 */
3129 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3130 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3131 goto out_unlock;
3132
3133 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3134
3135 /* Bind the P2P_DEVICE to the current PHY Context */
3136 mvmvif->phy_ctxt = phy_ctxt;
3137
3138 ret = iwl_mvm_binding_add_vif(mvm, vif);
3139 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3140 goto out_unlock;
3141
3142 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3143 goto schedule_time_event;
3144 }
3145 }
3146
3147 /* Need to update the PHY context only if the ROC channel changed */
3148 if (channel == mvmvif->phy_ctxt->channel)
3149 goto schedule_time_event;
3150
3151 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3152
3153 /*
3154 * Change the PHY context configuration as it is currently referenced
3155 * only by the P2P Device MAC
3156 */
3157 if (mvmvif->phy_ctxt->ref == 1) {
3158 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3159 &chandef, 1, 1);
3160 if (ret)
3161 goto out_unlock;
3162 } else {
3163 /*
3164 * The PHY context is shared with other MACs. Need to remove the
3165 * P2P Device from the binding, allocate an new PHY context and
3166 * create a new binding
3167 */
3168 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3169 if (!phy_ctxt) {
3170 ret = -ENOSPC;
3171 goto out_unlock;
3172 }
3173
3174 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3175 1, 1);
3176 if (ret) {
3177 IWL_ERR(mvm, "Failed to change PHY context\n");
3178 goto out_unlock;
3179 }
3180
3181 /* Unbind the P2P_DEVICE from the current PHY context */
3182 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3183 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3184 goto out_unlock;
3185
3186 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3187
3188 /* Bind the P2P_DEVICE to the new allocated PHY context */
3189 mvmvif->phy_ctxt = phy_ctxt;
3190
3191 ret = iwl_mvm_binding_add_vif(mvm, vif);
3192 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3193 goto out_unlock;
3194
3195 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3196 }
3197
3198 schedule_time_event:
3199 /* Schedule the time events */
3200 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3201
3202 out_unlock:
3203 mutex_unlock(&mvm->mutex);
3204 IWL_DEBUG_MAC80211(mvm, "leave\n");
3205 return ret;
3206 }
3207
3208 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3209 {
3210 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3211
3212 IWL_DEBUG_MAC80211(mvm, "enter\n");
3213
3214 mutex_lock(&mvm->mutex);
3215 iwl_mvm_stop_roc(mvm);
3216 mutex_unlock(&mvm->mutex);
3217
3218 IWL_DEBUG_MAC80211(mvm, "leave\n");
3219 return 0;
3220 }
3221
3222 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3223 struct ieee80211_chanctx_conf *ctx)
3224 {
3225 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3226 struct iwl_mvm_phy_ctxt *phy_ctxt;
3227 int ret;
3228
3229 lockdep_assert_held(&mvm->mutex);
3230
3231 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3232
3233 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3234 if (!phy_ctxt) {
3235 ret = -ENOSPC;
3236 goto out;
3237 }
3238
3239 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3240 ctx->rx_chains_static,
3241 ctx->rx_chains_dynamic);
3242 if (ret) {
3243 IWL_ERR(mvm, "Failed to add PHY context\n");
3244 goto out;
3245 }
3246
3247 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3248 *phy_ctxt_id = phy_ctxt->id;
3249 out:
3250 return ret;
3251 }
3252
3253 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3254 struct ieee80211_chanctx_conf *ctx)
3255 {
3256 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3257 int ret;
3258
3259 mutex_lock(&mvm->mutex);
3260 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3261 mutex_unlock(&mvm->mutex);
3262
3263 return ret;
3264 }
3265
3266 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3267 struct ieee80211_chanctx_conf *ctx)
3268 {
3269 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3270 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3271
3272 lockdep_assert_held(&mvm->mutex);
3273
3274 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3275 }
3276
3277 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3278 struct ieee80211_chanctx_conf *ctx)
3279 {
3280 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3281
3282 mutex_lock(&mvm->mutex);
3283 __iwl_mvm_remove_chanctx(mvm, ctx);
3284 mutex_unlock(&mvm->mutex);
3285 }
3286
3287 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3288 struct ieee80211_chanctx_conf *ctx,
3289 u32 changed)
3290 {
3291 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3292 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3293 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3294
3295 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3296 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3297 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3298 IEEE80211_CHANCTX_CHANGE_RADAR |
3299 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3300 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3301 phy_ctxt->ref, changed))
3302 return;
3303
3304 mutex_lock(&mvm->mutex);
3305 iwl_mvm_bt_coex_vif_change(mvm);
3306 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3307 ctx->rx_chains_static,
3308 ctx->rx_chains_dynamic);
3309 mutex_unlock(&mvm->mutex);
3310 }
3311
3312 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3313 struct ieee80211_vif *vif,
3314 struct ieee80211_chanctx_conf *ctx,
3315 bool switching_chanctx)
3316 {
3317 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3318 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3319 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3320 int ret;
3321
3322 lockdep_assert_held(&mvm->mutex);
3323
3324 mvmvif->phy_ctxt = phy_ctxt;
3325
3326 switch (vif->type) {
3327 case NL80211_IFTYPE_AP:
3328 /* only needed if we're switching chanctx (i.e. during CSA) */
3329 if (switching_chanctx) {
3330 mvmvif->ap_ibss_active = true;
3331 break;
3332 }
3333 case NL80211_IFTYPE_ADHOC:
3334 /*
3335 * The AP binding flow is handled as part of the start_ap flow
3336 * (in bss_info_changed), similarly for IBSS.
3337 */
3338 ret = 0;
3339 goto out;
3340 case NL80211_IFTYPE_STATION:
3341 break;
3342 case NL80211_IFTYPE_MONITOR:
3343 /* always disable PS when a monitor interface is active */
3344 mvmvif->ps_disabled = true;
3345 break;
3346 default:
3347 ret = -EINVAL;
3348 goto out;
3349 }
3350
3351 ret = iwl_mvm_binding_add_vif(mvm, vif);
3352 if (ret)
3353 goto out;
3354
3355 /*
3356 * Power state must be updated before quotas,
3357 * otherwise fw will complain.
3358 */
3359 iwl_mvm_power_update_mac(mvm);
3360
3361 /* Setting the quota at this stage is only required for monitor
3362 * interfaces. For the other types, the bss_info changed flow
3363 * will handle quota settings.
3364 */
3365 if (vif->type == NL80211_IFTYPE_MONITOR) {
3366 mvmvif->monitor_active = true;
3367 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3368 if (ret)
3369 goto out_remove_binding;
3370 }
3371
3372 /* Handle binding during CSA */
3373 if (vif->type == NL80211_IFTYPE_AP) {
3374 iwl_mvm_update_quotas(mvm, false, NULL);
3375 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3376 }
3377
3378 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3379 u32 duration = 2 * vif->bss_conf.beacon_int;
3380
3381 /* iwl_mvm_protect_session() reads directly from the
3382 * device (the system time), so make sure it is
3383 * available.
3384 */
3385 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3386 if (ret)
3387 goto out_remove_binding;
3388
3389 /* Protect the session to make sure we hear the first
3390 * beacon on the new channel.
3391 */
3392 iwl_mvm_protect_session(mvm, vif, duration, duration,
3393 vif->bss_conf.beacon_int / 2,
3394 true);
3395
3396 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3397
3398 iwl_mvm_update_quotas(mvm, false, NULL);
3399 }
3400
3401 goto out;
3402
3403 out_remove_binding:
3404 iwl_mvm_binding_remove_vif(mvm, vif);
3405 iwl_mvm_power_update_mac(mvm);
3406 out:
3407 if (ret)
3408 mvmvif->phy_ctxt = NULL;
3409 return ret;
3410 }
3411 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3412 struct ieee80211_vif *vif,
3413 struct ieee80211_chanctx_conf *ctx)
3414 {
3415 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3416 int ret;
3417
3418 mutex_lock(&mvm->mutex);
3419 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3420 mutex_unlock(&mvm->mutex);
3421
3422 return ret;
3423 }
3424
3425 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3426 struct ieee80211_vif *vif,
3427 struct ieee80211_chanctx_conf *ctx,
3428 bool switching_chanctx)
3429 {
3430 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3431 struct ieee80211_vif *disabled_vif = NULL;
3432
3433 lockdep_assert_held(&mvm->mutex);
3434
3435 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3436
3437 switch (vif->type) {
3438 case NL80211_IFTYPE_ADHOC:
3439 goto out;
3440 case NL80211_IFTYPE_MONITOR:
3441 mvmvif->monitor_active = false;
3442 mvmvif->ps_disabled = false;
3443 break;
3444 case NL80211_IFTYPE_AP:
3445 /* This part is triggered only during CSA */
3446 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3447 goto out;
3448
3449 mvmvif->csa_countdown = false;
3450
3451 /* Set CS bit on all the stations */
3452 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3453
3454 /* Save blocked iface, the timeout is set on the next beacon */
3455 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3456
3457 mvmvif->ap_ibss_active = false;
3458 break;
3459 case NL80211_IFTYPE_STATION:
3460 if (!switching_chanctx)
3461 break;
3462
3463 disabled_vif = vif;
3464
3465 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3466 break;
3467 default:
3468 break;
3469 }
3470
3471 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3472 iwl_mvm_binding_remove_vif(mvm, vif);
3473
3474 out:
3475 mvmvif->phy_ctxt = NULL;
3476 iwl_mvm_power_update_mac(mvm);
3477 }
3478
3479 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3480 struct ieee80211_vif *vif,
3481 struct ieee80211_chanctx_conf *ctx)
3482 {
3483 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3484
3485 mutex_lock(&mvm->mutex);
3486 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3487 mutex_unlock(&mvm->mutex);
3488 }
3489
3490 static int
3491 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3492 struct ieee80211_vif_chanctx_switch *vifs)
3493 {
3494 int ret;
3495
3496 mutex_lock(&mvm->mutex);
3497 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3498 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3499
3500 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3501 if (ret) {
3502 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3503 goto out_reassign;
3504 }
3505
3506 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3507 true);
3508 if (ret) {
3509 IWL_ERR(mvm,
3510 "failed to assign new_ctx during channel switch\n");
3511 goto out_remove;
3512 }
3513
3514 /* we don't support TDLS during DCM - can be caused by channel switch */
3515 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3516 iwl_mvm_teardown_tdls_peers(mvm);
3517
3518 goto out;
3519
3520 out_remove:
3521 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3522
3523 out_reassign:
3524 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3525 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3526 goto out_restart;
3527 }
3528
3529 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3530 true)) {
3531 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3532 goto out_restart;
3533 }
3534
3535 goto out;
3536
3537 out_restart:
3538 /* things keep failing, better restart the hw */
3539 iwl_mvm_nic_restart(mvm, false);
3540
3541 out:
3542 mutex_unlock(&mvm->mutex);
3543
3544 return ret;
3545 }
3546
3547 static int
3548 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3549 struct ieee80211_vif_chanctx_switch *vifs)
3550 {
3551 int ret;
3552
3553 mutex_lock(&mvm->mutex);
3554 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3555
3556 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3557 true);
3558 if (ret) {
3559 IWL_ERR(mvm,
3560 "failed to assign new_ctx during channel switch\n");
3561 goto out_reassign;
3562 }
3563
3564 goto out;
3565
3566 out_reassign:
3567 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3568 true)) {
3569 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3570 goto out_restart;
3571 }
3572
3573 goto out;
3574
3575 out_restart:
3576 /* things keep failing, better restart the hw */
3577 iwl_mvm_nic_restart(mvm, false);
3578
3579 out:
3580 mutex_unlock(&mvm->mutex);
3581
3582 return ret;
3583 }
3584
3585 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3586 struct ieee80211_vif_chanctx_switch *vifs,
3587 int n_vifs,
3588 enum ieee80211_chanctx_switch_mode mode)
3589 {
3590 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3591 int ret;
3592
3593 /* we only support a single-vif right now */
3594 if (n_vifs > 1)
3595 return -EOPNOTSUPP;
3596
3597 switch (mode) {
3598 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3599 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3600 break;
3601 case CHANCTX_SWMODE_REASSIGN_VIF:
3602 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3603 break;
3604 default:
3605 ret = -EOPNOTSUPP;
3606 break;
3607 }
3608
3609 return ret;
3610 }
3611
3612 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3613 struct ieee80211_sta *sta,
3614 bool set)
3615 {
3616 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3617 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3618
3619 if (!mvm_sta || !mvm_sta->vif) {
3620 IWL_ERR(mvm, "Station is not associated to a vif\n");
3621 return -EINVAL;
3622 }
3623
3624 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3625 }
3626
3627 #ifdef CONFIG_NL80211_TESTMODE
3628 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3629 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3630 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3631 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3632 };
3633
3634 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3635 struct ieee80211_vif *vif,
3636 void *data, int len)
3637 {
3638 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3639 int err;
3640 u32 noa_duration;
3641
3642 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3643 if (err)
3644 return err;
3645
3646 if (!tb[IWL_MVM_TM_ATTR_CMD])
3647 return -EINVAL;
3648
3649 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3650 case IWL_MVM_TM_CMD_SET_NOA:
3651 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3652 !vif->bss_conf.enable_beacon ||
3653 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3654 return -EINVAL;
3655
3656 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3657 if (noa_duration >= vif->bss_conf.beacon_int)
3658 return -EINVAL;
3659
3660 mvm->noa_duration = noa_duration;
3661 mvm->noa_vif = vif;
3662
3663 return iwl_mvm_update_quotas(mvm, false, NULL);
3664 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3665 /* must be associated client vif - ignore authorized */
3666 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3667 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3668 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3669 return -EINVAL;
3670
3671 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3672 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3673 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3674 }
3675
3676 return -EOPNOTSUPP;
3677 }
3678
3679 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3680 struct ieee80211_vif *vif,
3681 void *data, int len)
3682 {
3683 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3684 int err;
3685
3686 mutex_lock(&mvm->mutex);
3687 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3688 mutex_unlock(&mvm->mutex);
3689
3690 return err;
3691 }
3692 #endif
3693
3694 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3695 struct ieee80211_vif *vif,
3696 struct ieee80211_channel_switch *chsw)
3697 {
3698 /* By implementing this operation, we prevent mac80211 from
3699 * starting its own channel switch timer, so that we can call
3700 * ieee80211_chswitch_done() ourselves at the right time
3701 * (which is when the absence time event starts).
3702 */
3703
3704 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3705 "dummy channel switch op\n");
3706 }
3707
3708 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3709 struct ieee80211_vif *vif,
3710 struct ieee80211_channel_switch *chsw)
3711 {
3712 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3713 struct ieee80211_vif *csa_vif;
3714 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3715 u32 apply_time;
3716 int ret;
3717
3718 mutex_lock(&mvm->mutex);
3719
3720 mvmvif->csa_failed = false;
3721
3722 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3723 chsw->chandef.center_freq1);
3724
3725 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3726
3727 switch (vif->type) {
3728 case NL80211_IFTYPE_AP:
3729 csa_vif =
3730 rcu_dereference_protected(mvm->csa_vif,
3731 lockdep_is_held(&mvm->mutex));
3732 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3733 "Another CSA is already in progress")) {
3734 ret = -EBUSY;
3735 goto out_unlock;
3736 }
3737
3738 rcu_assign_pointer(mvm->csa_vif, vif);
3739
3740 if (WARN_ONCE(mvmvif->csa_countdown,
3741 "Previous CSA countdown didn't complete")) {
3742 ret = -EBUSY;
3743 goto out_unlock;
3744 }
3745
3746 break;
3747 case NL80211_IFTYPE_STATION:
3748 /* Schedule the time event to a bit before beacon 1,
3749 * to make sure we're in the new channel when the
3750 * GO/AP arrives.
3751 */
3752 apply_time = chsw->device_timestamp +
3753 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3754 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3755
3756 if (chsw->block_tx)
3757 iwl_mvm_csa_client_absent(mvm, vif);
3758
3759 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3760 apply_time);
3761 if (mvmvif->bf_data.bf_enabled) {
3762 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3763 if (ret)
3764 goto out_unlock;
3765 }
3766
3767 break;
3768 default:
3769 break;
3770 }
3771
3772 mvmvif->ps_disabled = true;
3773
3774 ret = iwl_mvm_power_update_ps(mvm);
3775 if (ret)
3776 goto out_unlock;
3777
3778 /* we won't be on this channel any longer */
3779 iwl_mvm_teardown_tdls_peers(mvm);
3780
3781 out_unlock:
3782 mutex_unlock(&mvm->mutex);
3783
3784 return ret;
3785 }
3786
3787 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3788 struct ieee80211_vif *vif)
3789 {
3790 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3791 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3792 int ret;
3793
3794 mutex_lock(&mvm->mutex);
3795
3796 if (mvmvif->csa_failed) {
3797 mvmvif->csa_failed = false;
3798 ret = -EIO;
3799 goto out_unlock;
3800 }
3801
3802 if (vif->type == NL80211_IFTYPE_STATION) {
3803 struct iwl_mvm_sta *mvmsta;
3804
3805 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3806 mvmvif->ap_sta_id);
3807
3808 if (WARN_ON(!mvmsta)) {
3809 ret = -EIO;
3810 goto out_unlock;
3811 }
3812
3813 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3814
3815 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3816
3817 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3818 if (ret)
3819 goto out_unlock;
3820
3821 iwl_mvm_stop_session_protection(mvm, vif);
3822 }
3823
3824 mvmvif->ps_disabled = false;
3825
3826 ret = iwl_mvm_power_update_ps(mvm);
3827
3828 out_unlock:
3829 mutex_unlock(&mvm->mutex);
3830
3831 return ret;
3832 }
3833
3834 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3835 struct ieee80211_vif *vif, u32 queues, bool drop)
3836 {
3837 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3838 struct iwl_mvm_vif *mvmvif;
3839 struct iwl_mvm_sta *mvmsta;
3840 struct ieee80211_sta *sta;
3841 int i;
3842 u32 msk = 0;
3843
3844 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3845 return;
3846
3847 mutex_lock(&mvm->mutex);
3848 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3849
3850 /* flush the AP-station and all TDLS peers */
3851 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3852 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3853 lockdep_is_held(&mvm->mutex));
3854 if (IS_ERR_OR_NULL(sta))
3855 continue;
3856
3857 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3858 if (mvmsta->vif != vif)
3859 continue;
3860
3861 /* make sure only TDLS peers or the AP are flushed */
3862 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3863
3864 msk |= mvmsta->tfd_queue_msk;
3865 }
3866
3867 if (drop) {
3868 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3869 IWL_ERR(mvm, "flush request fail\n");
3870 mutex_unlock(&mvm->mutex);
3871 } else {
3872 mutex_unlock(&mvm->mutex);
3873
3874 /* this can take a while, and we may need/want other operations
3875 * to succeed while doing this, so do it without the mutex held
3876 */
3877 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3878 }
3879 }
3880
3881 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3882 struct survey_info *survey)
3883 {
3884 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3885 int ret;
3886
3887 memset(survey, 0, sizeof(*survey));
3888
3889 /* only support global statistics right now */
3890 if (idx != 0)
3891 return -ENOENT;
3892
3893 if (!(mvm->fw->ucode_capa.capa[0] &
3894 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3895 return -ENOENT;
3896
3897 mutex_lock(&mvm->mutex);
3898
3899 if (mvm->ucode_loaded) {
3900 ret = iwl_mvm_request_statistics(mvm, false);
3901 if (ret)
3902 goto out;
3903 }
3904
3905 survey->filled = SURVEY_INFO_TIME |
3906 SURVEY_INFO_TIME_RX |
3907 SURVEY_INFO_TIME_TX |
3908 SURVEY_INFO_TIME_SCAN;
3909 survey->time = mvm->accu_radio_stats.on_time_rf +
3910 mvm->radio_stats.on_time_rf;
3911 do_div(survey->time, USEC_PER_MSEC);
3912
3913 survey->time_rx = mvm->accu_radio_stats.rx_time +
3914 mvm->radio_stats.rx_time;
3915 do_div(survey->time_rx, USEC_PER_MSEC);
3916
3917 survey->time_tx = mvm->accu_radio_stats.tx_time +
3918 mvm->radio_stats.tx_time;
3919 do_div(survey->time_tx, USEC_PER_MSEC);
3920
3921 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3922 mvm->radio_stats.on_time_scan;
3923 do_div(survey->time_scan, USEC_PER_MSEC);
3924
3925 ret = 0;
3926 out:
3927 mutex_unlock(&mvm->mutex);
3928 return ret;
3929 }
3930
3931 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3932 struct ieee80211_vif *vif,
3933 struct ieee80211_sta *sta,
3934 struct station_info *sinfo)
3935 {
3936 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3937 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3938 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3939
3940 if (!(mvm->fw->ucode_capa.capa[0] &
3941 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3942 return;
3943
3944 /* if beacon filtering isn't on mac80211 does it anyway */
3945 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3946 return;
3947
3948 if (!vif->bss_conf.assoc)
3949 return;
3950
3951 mutex_lock(&mvm->mutex);
3952
3953 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3954 goto unlock;
3955
3956 if (iwl_mvm_request_statistics(mvm, false))
3957 goto unlock;
3958
3959 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3960 mvmvif->beacon_stats.accu_num_beacons;
3961 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3962 if (mvmvif->beacon_stats.avg_signal) {
3963 /* firmware only reports a value after RXing a few beacons */
3964 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3965 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3966 }
3967 unlock:
3968 mutex_unlock(&mvm->mutex);
3969 }
3970
3971 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3972 struct ieee80211_vif *vif,
3973 const struct ieee80211_event *event)
3974 {
3975 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
3976 do { \
3977 if ((_cnt) && --(_cnt)) \
3978 break; \
3979 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3980 } while (0)
3981
3982 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3983 struct iwl_fw_dbg_trigger_tlv *trig;
3984 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3985
3986 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3987 return;
3988
3989 if (event->u.mlme.status == MLME_SUCCESS)
3990 return;
3991
3992 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3993 trig_mlme = (void *)trig->data;
3994 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3995 return;
3996
3997 if (event->u.mlme.data == ASSOC_EVENT) {
3998 if (event->u.mlme.status == MLME_DENIED)
3999 CHECK_MLME_TRIGGER(mvm, trig, buf,
4000 trig_mlme->stop_assoc_denied,
4001 "DENIED ASSOC: reason %d",
4002 event->u.mlme.reason);
4003 else if (event->u.mlme.status == MLME_TIMEOUT)
4004 CHECK_MLME_TRIGGER(mvm, trig, buf,
4005 trig_mlme->stop_assoc_timeout,
4006 "ASSOC TIMEOUT");
4007 } else if (event->u.mlme.data == AUTH_EVENT) {
4008 if (event->u.mlme.status == MLME_DENIED)
4009 CHECK_MLME_TRIGGER(mvm, trig, buf,
4010 trig_mlme->stop_auth_denied,
4011 "DENIED AUTH: reason %d",
4012 event->u.mlme.reason);
4013 else if (event->u.mlme.status == MLME_TIMEOUT)
4014 CHECK_MLME_TRIGGER(mvm, trig, buf,
4015 trig_mlme->stop_auth_timeout,
4016 "AUTH TIMEOUT");
4017 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4018 CHECK_MLME_TRIGGER(mvm, trig, buf,
4019 trig_mlme->stop_rx_deauth,
4020 "DEAUTH RX %d", event->u.mlme.reason);
4021 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4022 CHECK_MLME_TRIGGER(mvm, trig, buf,
4023 trig_mlme->stop_tx_deauth,
4024 "DEAUTH TX %d", event->u.mlme.reason);
4025 }
4026 #undef CHECK_MLME_TRIGGER
4027 }
4028
4029 const struct ieee80211_ops iwl_mvm_hw_ops = {
4030 .tx = iwl_mvm_mac_tx,
4031 .ampdu_action = iwl_mvm_mac_ampdu_action,
4032 .start = iwl_mvm_mac_start,
4033 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4034 .stop = iwl_mvm_mac_stop,
4035 .add_interface = iwl_mvm_mac_add_interface,
4036 .remove_interface = iwl_mvm_mac_remove_interface,
4037 .config = iwl_mvm_mac_config,
4038 .prepare_multicast = iwl_mvm_prepare_multicast,
4039 .configure_filter = iwl_mvm_configure_filter,
4040 .bss_info_changed = iwl_mvm_bss_info_changed,
4041 .hw_scan = iwl_mvm_mac_hw_scan,
4042 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4043 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4044 .sta_state = iwl_mvm_mac_sta_state,
4045 .sta_notify = iwl_mvm_mac_sta_notify,
4046 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4047 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4048 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4049 .sta_rc_update = iwl_mvm_sta_rc_update,
4050 .conf_tx = iwl_mvm_mac_conf_tx,
4051 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4052 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4053 .flush = iwl_mvm_mac_flush,
4054 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4055 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4056 .set_key = iwl_mvm_mac_set_key,
4057 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4058 .remain_on_channel = iwl_mvm_roc,
4059 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4060 .add_chanctx = iwl_mvm_add_chanctx,
4061 .remove_chanctx = iwl_mvm_remove_chanctx,
4062 .change_chanctx = iwl_mvm_change_chanctx,
4063 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4064 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4065 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4066
4067 .start_ap = iwl_mvm_start_ap_ibss,
4068 .stop_ap = iwl_mvm_stop_ap_ibss,
4069 .join_ibss = iwl_mvm_start_ap_ibss,
4070 .leave_ibss = iwl_mvm_stop_ap_ibss,
4071
4072 .set_tim = iwl_mvm_set_tim,
4073
4074 .channel_switch = iwl_mvm_channel_switch,
4075 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4076 .post_channel_switch = iwl_mvm_post_channel_switch,
4077
4078 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4079 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4080 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4081
4082 .event_callback = iwl_mvm_mac_event_callback,
4083
4084 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4085
4086 #ifdef CONFIG_PM_SLEEP
4087 /* look at d3.c */
4088 .suspend = iwl_mvm_suspend,
4089 .resume = iwl_mvm_resume,
4090 .set_wakeup = iwl_mvm_set_wakeup,
4091 .set_rekey_data = iwl_mvm_set_rekey_data,
4092 #if IS_ENABLED(CONFIG_IPV6)
4093 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4094 #endif
4095 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4096 #endif
4097 .get_survey = iwl_mvm_mac_get_survey,
4098 .sta_statistics = iwl_mvm_mac_sta_statistics,
4099 };
Linux kernel - Deliverables
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