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iwlwifi: mvm: allow scheduled scan for all the firmwares
[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 "iwl-phy-db.h"
84 #include "testmode.h"
85 #include "iwl-fw-error-dump.h"
86 #include "iwl-prph.h"
87 #include "iwl-csr.h"
88 #include "iwl-nvm-parse.h"
89
90 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
91 {
92 .max = 1,
93 .types = BIT(NL80211_IFTYPE_STATION),
94 },
95 {
96 .max = 1,
97 .types = BIT(NL80211_IFTYPE_AP) |
98 BIT(NL80211_IFTYPE_P2P_CLIENT) |
99 BIT(NL80211_IFTYPE_P2P_GO),
100 },
101 {
102 .max = 1,
103 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
104 },
105 };
106
107 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
108 {
109 .num_different_channels = 2,
110 .max_interfaces = 3,
111 .limits = iwl_mvm_limits,
112 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
113 },
114 };
115
116 #ifdef CONFIG_PM_SLEEP
117 static const struct nl80211_wowlan_tcp_data_token_feature
118 iwl_mvm_wowlan_tcp_token_feature = {
119 .min_len = 0,
120 .max_len = 255,
121 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
122 };
123
124 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
125 .tok = &iwl_mvm_wowlan_tcp_token_feature,
126 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
127 sizeof(struct ethhdr) -
128 sizeof(struct iphdr) -
129 sizeof(struct tcphdr),
130 .data_interval_max = 65535, /* __le16 in API */
131 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
132 sizeof(struct ethhdr) -
133 sizeof(struct iphdr) -
134 sizeof(struct tcphdr),
135 .seq = true,
136 };
137 #endif
138
139 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
140 /*
141 * Use the reserved field to indicate magic values.
142 * these values will only be used internally by the driver,
143 * and won't make it to the fw (reserved will be 0).
144 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
145 * be the vif's ip address. in case there is not a single
146 * ip address (0, or more than 1), this attribute will
147 * be skipped.
148 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
149 * the LSB bytes of the vif's mac address
150 */
151 enum {
152 BC_FILTER_MAGIC_NONE = 0,
153 BC_FILTER_MAGIC_IP,
154 BC_FILTER_MAGIC_MAC,
155 };
156
157 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
158 {
159 /* arp */
160 .discard = 0,
161 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
162 .attrs = {
163 {
164 /* frame type - arp, hw type - ethernet */
165 .offset_type =
166 BCAST_FILTER_OFFSET_PAYLOAD_START,
167 .offset = sizeof(rfc1042_header),
168 .val = cpu_to_be32(0x08060001),
169 .mask = cpu_to_be32(0xffffffff),
170 },
171 {
172 /* arp dest ip */
173 .offset_type =
174 BCAST_FILTER_OFFSET_PAYLOAD_START,
175 .offset = sizeof(rfc1042_header) + 2 +
176 sizeof(struct arphdr) +
177 ETH_ALEN + sizeof(__be32) +
178 ETH_ALEN,
179 .mask = cpu_to_be32(0xffffffff),
180 /* mark it as special field */
181 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
182 },
183 },
184 },
185 {
186 /* dhcp offer bcast */
187 .discard = 0,
188 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
189 .attrs = {
190 {
191 /* udp dest port - 68 (bootp client)*/
192 .offset_type = BCAST_FILTER_OFFSET_IP_END,
193 .offset = offsetof(struct udphdr, dest),
194 .val = cpu_to_be32(0x00440000),
195 .mask = cpu_to_be32(0xffff0000),
196 },
197 {
198 /* dhcp - lsb bytes of client hw address */
199 .offset_type = BCAST_FILTER_OFFSET_IP_END,
200 .offset = 38,
201 .mask = cpu_to_be32(0xffffffff),
202 /* mark it as special field */
203 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
204 },
205 },
206 },
207 /* last filter must be empty */
208 {},
209 };
210 #endif
211
212 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
213 {
214 if (!iwl_mvm_is_d0i3_supported(mvm))
215 return;
216
217 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
218 spin_lock_bh(&mvm->refs_lock);
219 mvm->refs[ref_type]++;
220 spin_unlock_bh(&mvm->refs_lock);
221 iwl_trans_ref(mvm->trans);
222 }
223
224 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
225 {
226 if (!iwl_mvm_is_d0i3_supported(mvm))
227 return;
228
229 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
230 spin_lock_bh(&mvm->refs_lock);
231 WARN_ON(!mvm->refs[ref_type]--);
232 spin_unlock_bh(&mvm->refs_lock);
233 iwl_trans_unref(mvm->trans);
234 }
235
236 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
237 enum iwl_mvm_ref_type except_ref)
238 {
239 int i, j;
240
241 if (!iwl_mvm_is_d0i3_supported(mvm))
242 return;
243
244 spin_lock_bh(&mvm->refs_lock);
245 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
246 if (except_ref == i || !mvm->refs[i])
247 continue;
248
249 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
250 i, mvm->refs[i]);
251 for (j = 0; j < mvm->refs[i]; j++)
252 iwl_trans_unref(mvm->trans);
253 mvm->refs[i] = 0;
254 }
255 spin_unlock_bh(&mvm->refs_lock);
256 }
257
258 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
259 {
260 int i;
261 bool taken = false;
262
263 if (!iwl_mvm_is_d0i3_supported(mvm))
264 return true;
265
266 spin_lock_bh(&mvm->refs_lock);
267 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
268 if (mvm->refs[i]) {
269 taken = true;
270 break;
271 }
272 }
273 spin_unlock_bh(&mvm->refs_lock);
274
275 return taken;
276 }
277
278 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
279 {
280 iwl_mvm_ref(mvm, ref_type);
281
282 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
283 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
284 HZ)) {
285 WARN_ON_ONCE(1);
286 iwl_mvm_unref(mvm, ref_type);
287 return -EIO;
288 }
289
290 return 0;
291 }
292
293 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
294 {
295 int i;
296
297 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
298 for (i = 0; i < NUM_PHY_CTX; i++) {
299 mvm->phy_ctxts[i].id = i;
300 mvm->phy_ctxts[i].ref = 0;
301 }
302 }
303
304 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
305 const char *alpha2,
306 enum iwl_mcc_source src_id,
307 bool *changed)
308 {
309 struct ieee80211_regdomain *regd = NULL;
310 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
311 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
312 struct iwl_mcc_update_resp *resp;
313
314 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
315
316 lockdep_assert_held(&mvm->mutex);
317
318 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
319 if (IS_ERR_OR_NULL(resp)) {
320 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
321 PTR_RET(resp));
322 goto out;
323 }
324
325 if (changed)
326 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
327
328 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
329 __le32_to_cpu(resp->n_channels),
330 resp->channels,
331 __le16_to_cpu(resp->mcc));
332 /* Store the return source id */
333 src_id = resp->source_id;
334 kfree(resp);
335 if (IS_ERR_OR_NULL(regd)) {
336 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
337 PTR_RET(regd));
338 goto out;
339 }
340
341 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
342 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
343 mvm->lar_regdom_set = true;
344 mvm->mcc_src = src_id;
345
346 out:
347 return regd;
348 }
349
350 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
351 {
352 bool changed;
353 struct ieee80211_regdomain *regd;
354
355 if (!iwl_mvm_is_lar_supported(mvm))
356 return;
357
358 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
359 if (!IS_ERR_OR_NULL(regd)) {
360 /* only update the regulatory core if changed */
361 if (changed)
362 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
363
364 kfree(regd);
365 }
366 }
367
368 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
369 bool *changed)
370 {
371 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
372 iwl_mvm_is_wifi_mcc_supported(mvm) ?
373 MCC_SOURCE_GET_CURRENT :
374 MCC_SOURCE_OLD_FW, changed);
375 }
376
377 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
378 {
379 enum iwl_mcc_source used_src;
380 struct ieee80211_regdomain *regd;
381 int ret;
382 bool changed;
383 const struct ieee80211_regdomain *r =
384 rtnl_dereference(mvm->hw->wiphy->regd);
385
386 if (!r)
387 return -ENOENT;
388
389 /* save the last source in case we overwrite it below */
390 used_src = mvm->mcc_src;
391 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
392 /* Notify the firmware we support wifi location updates */
393 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
394 if (!IS_ERR_OR_NULL(regd))
395 kfree(regd);
396 }
397
398 /* Now set our last stored MCC and source */
399 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
400 &changed);
401 if (IS_ERR_OR_NULL(regd))
402 return -EIO;
403
404 /* update cfg80211 if the regdomain was changed */
405 if (changed)
406 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
407 else
408 ret = 0;
409
410 kfree(regd);
411 return ret;
412 }
413
414 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
415 {
416 struct ieee80211_hw *hw = mvm->hw;
417 int num_mac, ret, i;
418
419 /* Tell mac80211 our characteristics */
420 hw->flags = IEEE80211_HW_SIGNAL_DBM |
421 IEEE80211_HW_SPECTRUM_MGMT |
422 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
423 IEEE80211_HW_QUEUE_CONTROL |
424 IEEE80211_HW_WANT_MONITOR_VIF |
425 IEEE80211_HW_SUPPORTS_PS |
426 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
427 IEEE80211_HW_AMPDU_AGGREGATION |
428 IEEE80211_HW_TIMING_BEACON_ONLY |
429 IEEE80211_HW_CONNECTION_MONITOR |
430 IEEE80211_HW_CHANCTX_STA_CSA |
431 IEEE80211_HW_SUPPORTS_CLONED_SKBS;
432
433 hw->queues = mvm->first_agg_queue;
434 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
435 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
436 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
437 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
438 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
439 hw->rate_control_algorithm = "iwl-mvm-rs";
440 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
441 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
442
443 /*
444 * Enable 11w if advertised by firmware and software crypto
445 * is not enabled (as the firmware will interpret some mgmt
446 * packets, so enabling it with software crypto isn't safe)
447 */
448 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
449 !iwlwifi_mod_params.sw_crypto)
450 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
451
452 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
453 hw->wiphy->features |=
454 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
455 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
456
457 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
458 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
459 hw->chanctx_data_size = sizeof(u16);
460
461 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
462 BIT(NL80211_IFTYPE_P2P_CLIENT) |
463 BIT(NL80211_IFTYPE_AP) |
464 BIT(NL80211_IFTYPE_P2P_GO) |
465 BIT(NL80211_IFTYPE_P2P_DEVICE) |
466 BIT(NL80211_IFTYPE_ADHOC);
467
468 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
469 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
470 if (iwl_mvm_is_lar_supported(mvm))
471 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
472 else
473 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
474 REGULATORY_DISABLE_BEACON_HINTS;
475
476 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
477 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
478
479 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
480
481 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
482 hw->wiphy->n_iface_combinations =
483 ARRAY_SIZE(iwl_mvm_iface_combinations);
484
485 hw->wiphy->max_remain_on_channel_duration = 10000;
486 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
487 /* we can compensate an offset of up to 3 channels = 15 MHz */
488 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
489
490 /* Extract MAC address */
491 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
492 hw->wiphy->addresses = mvm->addresses;
493 hw->wiphy->n_addresses = 1;
494
495 /* Extract additional MAC addresses if available */
496 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
497 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
498
499 for (i = 1; i < num_mac; i++) {
500 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
501 ETH_ALEN);
502 mvm->addresses[i].addr[5]++;
503 hw->wiphy->n_addresses++;
504 }
505
506 iwl_mvm_reset_phy_ctxts(mvm);
507
508 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
509
510 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
511
512 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
513 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
514
515 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
516 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
517 else
518 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
519
520 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
521 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
522 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
523 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
524 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
525 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
526
527 if ((mvm->fw->ucode_capa.capa[0] &
528 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
529 (mvm->fw->ucode_capa.api[0] &
530 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
531 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
532 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
533 }
534
535 hw->wiphy->hw_version = mvm->trans->hw_id;
536
537 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
538 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
539 else
540 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
541
542 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
543 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
544 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
545 /* we create the 802.11 header and zero length SSID IE. */
546 hw->wiphy->max_sched_scan_ie_len =
547 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
548
549 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
550 NL80211_FEATURE_LOW_PRIORITY_SCAN |
551 NL80211_FEATURE_P2P_GO_OPPPS |
552 NL80211_FEATURE_DYNAMIC_SMPS |
553 NL80211_FEATURE_STATIC_SMPS |
554 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
555
556 if (mvm->fw->ucode_capa.capa[0] &
557 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
558 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
559 if (mvm->fw->ucode_capa.capa[0] &
560 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
561 hw->wiphy->features |= NL80211_FEATURE_QUIET;
562
563 if (mvm->fw->ucode_capa.capa[0] &
564 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
565 hw->wiphy->features |=
566 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
567
568 if (mvm->fw->ucode_capa.capa[0] &
569 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
570 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
571
572 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
573
574 /* currently FW API supports only one optional cipher scheme */
575 if (mvm->fw->cs[0].cipher) {
576 mvm->hw->n_cipher_schemes = 1;
577 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
578 }
579
580 #ifdef CONFIG_PM_SLEEP
581 if (iwl_mvm_is_d0i3_supported(mvm) &&
582 device_can_wakeup(mvm->trans->dev)) {
583 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
584 hw->wiphy->wowlan = &mvm->wowlan;
585 }
586
587 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
588 mvm->trans->ops->d3_suspend &&
589 mvm->trans->ops->d3_resume &&
590 device_can_wakeup(mvm->trans->dev)) {
591 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
592 WIPHY_WOWLAN_DISCONNECT |
593 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
594 WIPHY_WOWLAN_RFKILL_RELEASE |
595 WIPHY_WOWLAN_NET_DETECT;
596 if (!iwlwifi_mod_params.sw_crypto)
597 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
598 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
599 WIPHY_WOWLAN_4WAY_HANDSHAKE;
600
601 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
602 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
603 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
604 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
605 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
606 hw->wiphy->wowlan = &mvm->wowlan;
607 }
608 #endif
609
610 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
611 /* assign default bcast filtering configuration */
612 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
613 #endif
614
615 ret = iwl_mvm_leds_init(mvm);
616 if (ret)
617 return ret;
618
619 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
620 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
621 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
622 }
623
624 if (mvm->fw->ucode_capa.capa[0] &
625 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
626 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
627 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
628 }
629
630 ret = ieee80211_register_hw(mvm->hw);
631 if (ret)
632 iwl_mvm_leds_exit(mvm);
633
634 return ret;
635 }
636
637 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
638 struct ieee80211_sta *sta,
639 struct sk_buff *skb)
640 {
641 struct iwl_mvm_sta *mvmsta;
642 bool defer = false;
643
644 /*
645 * double check the IN_D0I3 flag both before and after
646 * taking the spinlock, in order to prevent taking
647 * the spinlock when not needed.
648 */
649 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
650 return false;
651
652 spin_lock(&mvm->d0i3_tx_lock);
653 /*
654 * testing the flag again ensures the skb dequeue
655 * loop (on d0i3 exit) hasn't run yet.
656 */
657 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
658 goto out;
659
660 mvmsta = iwl_mvm_sta_from_mac80211(sta);
661 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
662 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
663 goto out;
664
665 __skb_queue_tail(&mvm->d0i3_tx, skb);
666 ieee80211_stop_queues(mvm->hw);
667
668 /* trigger wakeup */
669 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
670 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
671
672 defer = true;
673 out:
674 spin_unlock(&mvm->d0i3_tx_lock);
675 return defer;
676 }
677
678 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
679 struct ieee80211_tx_control *control,
680 struct sk_buff *skb)
681 {
682 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
683 struct ieee80211_sta *sta = control->sta;
684 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
685 struct ieee80211_hdr *hdr = (void *)skb->data;
686
687 if (iwl_mvm_is_radio_killed(mvm)) {
688 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
689 goto drop;
690 }
691
692 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
693 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
694 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
695 goto drop;
696
697 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
698 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
699 ieee80211_is_mgmt(hdr->frame_control) &&
700 !ieee80211_is_deauth(hdr->frame_control) &&
701 !ieee80211_is_disassoc(hdr->frame_control) &&
702 !ieee80211_is_action(hdr->frame_control)))
703 sta = NULL;
704
705 if (sta) {
706 if (iwl_mvm_defer_tx(mvm, sta, skb))
707 return;
708 if (iwl_mvm_tx_skb(mvm, skb, sta))
709 goto drop;
710 return;
711 }
712
713 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
714 goto drop;
715 return;
716 drop:
717 ieee80211_free_txskb(hw, skb);
718 }
719
720 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
721 {
722 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
723 return false;
724 return true;
725 }
726
727 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
728 {
729 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
730 return false;
731 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
732 return true;
733
734 /* enabled by default */
735 return true;
736 }
737
738 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
739 struct ieee80211_vif *vif,
740 enum ieee80211_ampdu_mlme_action action,
741 struct ieee80211_sta *sta, u16 tid,
742 u16 *ssn, u8 buf_size)
743 {
744 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
745 int ret;
746 bool tx_agg_ref = false;
747
748 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
749 sta->addr, tid, action);
750
751 if (!(mvm->nvm_data->sku_cap_11n_enable))
752 return -EACCES;
753
754 /* return from D0i3 before starting a new Tx aggregation */
755 switch (action) {
756 case IEEE80211_AMPDU_TX_START:
757 case IEEE80211_AMPDU_TX_STOP_CONT:
758 case IEEE80211_AMPDU_TX_STOP_FLUSH:
759 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
760 case IEEE80211_AMPDU_TX_OPERATIONAL:
761 /*
762 * for tx start, wait synchronously until D0i3 exit to
763 * get the correct sequence number for the tid.
764 * additionally, some other ampdu actions use direct
765 * target access, which is not handled automatically
766 * by the trans layer (unlike commands), so wait for
767 * d0i3 exit in these cases as well.
768 */
769 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
770 if (ret)
771 return ret;
772
773 tx_agg_ref = true;
774 break;
775 default:
776 break;
777 }
778
779 mutex_lock(&mvm->mutex);
780
781 switch (action) {
782 case IEEE80211_AMPDU_RX_START:
783 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
784 ret = -EINVAL;
785 break;
786 }
787 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
788 break;
789 case IEEE80211_AMPDU_RX_STOP:
790 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
791 break;
792 case IEEE80211_AMPDU_TX_START:
793 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
794 ret = -EINVAL;
795 break;
796 }
797 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
798 break;
799 case IEEE80211_AMPDU_TX_STOP_CONT:
800 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
801 break;
802 case IEEE80211_AMPDU_TX_STOP_FLUSH:
803 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
804 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
805 break;
806 case IEEE80211_AMPDU_TX_OPERATIONAL:
807 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
808 break;
809 default:
810 WARN_ON_ONCE(1);
811 ret = -EINVAL;
812 break;
813 }
814 mutex_unlock(&mvm->mutex);
815
816 /*
817 * If the tid is marked as started, we won't use it for offloaded
818 * traffic on the next D0i3 entry. It's safe to unref.
819 */
820 if (tx_agg_ref)
821 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
822
823 return ret;
824 }
825
826 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
827 struct ieee80211_vif *vif)
828 {
829 struct iwl_mvm *mvm = data;
830 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
831
832 mvmvif->uploaded = false;
833 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
834
835 spin_lock_bh(&mvm->time_event_lock);
836 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
837 spin_unlock_bh(&mvm->time_event_lock);
838
839 mvmvif->phy_ctxt = NULL;
840 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
841 }
842
843 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
844 const void *data, size_t datalen)
845 {
846 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
847 ssize_t bytes_read;
848 ssize_t bytes_read_trans;
849
850 if (offset < dump_ptrs->op_mode_len) {
851 bytes_read = min_t(ssize_t, count,
852 dump_ptrs->op_mode_len - offset);
853 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
854 bytes_read);
855 offset += bytes_read;
856 count -= bytes_read;
857
858 if (count == 0)
859 return bytes_read;
860 } else {
861 bytes_read = 0;
862 }
863
864 if (!dump_ptrs->trans_ptr)
865 return bytes_read;
866
867 offset -= dump_ptrs->op_mode_len;
868 bytes_read_trans = min_t(ssize_t, count,
869 dump_ptrs->trans_ptr->len - offset);
870 memcpy(buffer + bytes_read,
871 (u8 *)dump_ptrs->trans_ptr->data + offset,
872 bytes_read_trans);
873
874 return bytes_read + bytes_read_trans;
875 }
876
877 static void iwl_mvm_free_coredump(const void *data)
878 {
879 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
880
881 vfree(fw_error_dump->op_mode_ptr);
882 vfree(fw_error_dump->trans_ptr);
883 kfree(fw_error_dump);
884 }
885
886 static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
887 struct iwl_fw_error_dump_data **dump_data)
888 {
889 struct iwl_fw_error_dump_fifo *fifo_hdr;
890 u32 *fifo_data;
891 u32 fifo_len;
892 unsigned long flags;
893 int i, j;
894
895 if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
896 return;
897
898 /* Pull RXF data from all RXFs */
899 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
900 /*
901 * Keep aside the additional offset that might be needed for
902 * next RXF
903 */
904 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
905
906 fifo_hdr = (void *)(*dump_data)->data;
907 fifo_data = (void *)fifo_hdr->data;
908 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
909
910 /* No need to try to read the data if the length is 0 */
911 if (fifo_len == 0)
912 continue;
913
914 /* Add a TLV for the RXF */
915 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
916 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
917
918 fifo_hdr->fifo_num = cpu_to_le32(i);
919 fifo_hdr->available_bytes =
920 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
921 RXF_RD_D_SPACE +
922 offset_diff));
923 fifo_hdr->wr_ptr =
924 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
925 RXF_RD_WR_PTR +
926 offset_diff));
927 fifo_hdr->rd_ptr =
928 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
929 RXF_RD_RD_PTR +
930 offset_diff));
931 fifo_hdr->fence_ptr =
932 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
933 RXF_RD_FENCE_PTR +
934 offset_diff));
935 fifo_hdr->fence_mode =
936 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
937 RXF_SET_FENCE_MODE +
938 offset_diff));
939
940 /* Lock fence */
941 iwl_trans_write_prph(mvm->trans,
942 RXF_SET_FENCE_MODE + offset_diff, 0x1);
943 /* Set fence pointer to the same place like WR pointer */
944 iwl_trans_write_prph(mvm->trans,
945 RXF_LD_WR2FENCE + offset_diff, 0x1);
946 /* Set fence offset */
947 iwl_trans_write_prph(mvm->trans,
948 RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
949 0x0);
950
951 /* Read FIFO */
952 fifo_len /= sizeof(u32); /* Size in DWORDS */
953 for (j = 0; j < fifo_len; j++)
954 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
955 RXF_FIFO_RD_FENCE_INC +
956 offset_diff);
957 *dump_data = iwl_fw_error_next_data(*dump_data);
958 }
959
960 /* Pull TXF data from all TXFs */
961 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
962 /* Mark the number of TXF we're pulling now */
963 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
964
965 fifo_hdr = (void *)(*dump_data)->data;
966 fifo_data = (void *)fifo_hdr->data;
967 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
968
969 /* No need to try to read the data if the length is 0 */
970 if (fifo_len == 0)
971 continue;
972
973 /* Add a TLV for the FIFO */
974 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
975 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
976
977 fifo_hdr->fifo_num = cpu_to_le32(i);
978 fifo_hdr->available_bytes =
979 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
980 TXF_FIFO_ITEM_CNT));
981 fifo_hdr->wr_ptr =
982 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
983 TXF_WR_PTR));
984 fifo_hdr->rd_ptr =
985 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
986 TXF_RD_PTR));
987 fifo_hdr->fence_ptr =
988 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
989 TXF_FENCE_PTR));
990 fifo_hdr->fence_mode =
991 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
992 TXF_LOCK_FENCE));
993
994 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
995 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
996 TXF_WR_PTR);
997
998 /* Dummy-read to advance the read pointer to the head */
999 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
1000
1001 /* Read FIFO */
1002 fifo_len /= sizeof(u32); /* Size in DWORDS */
1003 for (j = 0; j < fifo_len; j++)
1004 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
1005 TXF_READ_MODIFY_DATA);
1006 *dump_data = iwl_fw_error_next_data(*dump_data);
1007 }
1008
1009 iwl_trans_release_nic_access(mvm->trans, &flags);
1010 }
1011
1012 void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
1013 {
1014 if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert ||
1015 !mvm->fw_dump_desc)
1016 return;
1017
1018 kfree(mvm->fw_dump_desc);
1019 mvm->fw_dump_desc = NULL;
1020 }
1021
1022 #define IWL8260_ICCM_OFFSET 0x44000 /* Only for B-step */
1023 #define IWL8260_ICCM_LEN 0xC000 /* Only for B-step */
1024
1025 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
1026 {
1027 struct iwl_fw_error_dump_file *dump_file;
1028 struct iwl_fw_error_dump_data *dump_data;
1029 struct iwl_fw_error_dump_info *dump_info;
1030 struct iwl_fw_error_dump_mem *dump_mem;
1031 struct iwl_fw_error_dump_trigger_desc *dump_trig;
1032 struct iwl_mvm_dump_ptrs *fw_error_dump;
1033 u32 sram_len, sram_ofs;
1034 u32 file_len, fifo_data_len = 0;
1035 u32 smem_len = mvm->cfg->smem_len;
1036 u32 sram2_len = mvm->cfg->dccm2_len;
1037
1038 lockdep_assert_held(&mvm->mutex);
1039
1040 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
1041 if (!fw_error_dump)
1042 return;
1043
1044 /* SRAM - include stack CCM if driver knows the values for it */
1045 if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
1046 const struct fw_img *img;
1047
1048 img = &mvm->fw->img[mvm->cur_ucode];
1049 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1050 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
1051 } else {
1052 sram_ofs = mvm->cfg->dccm_offset;
1053 sram_len = mvm->cfg->dccm_len;
1054 }
1055
1056 /* reading RXF/TXF sizes */
1057 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
1058 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
1059 int i;
1060
1061 fifo_data_len = 0;
1062
1063 /* Count RXF size */
1064 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
1065 if (!mem_cfg->rxfifo_size[i])
1066 continue;
1067
1068 /* Add header info */
1069 fifo_data_len += mem_cfg->rxfifo_size[i] +
1070 sizeof(*dump_data) +
1071 sizeof(struct iwl_fw_error_dump_fifo);
1072 }
1073
1074 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
1075 if (!mem_cfg->txfifo_size[i])
1076 continue;
1077
1078 /* Add header info */
1079 fifo_data_len += mem_cfg->txfifo_size[i] +
1080 sizeof(*dump_data) +
1081 sizeof(struct iwl_fw_error_dump_fifo);
1082 }
1083 }
1084
1085 file_len = sizeof(*dump_file) +
1086 sizeof(*dump_data) * 2 +
1087 sram_len + sizeof(*dump_mem) +
1088 fifo_data_len +
1089 sizeof(*dump_info);
1090
1091 /*
1092 * In 8000 HW family B-step include the ICCM (which resides separately)
1093 */
1094 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1095 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP)
1096 file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
1097 IWL8260_ICCM_LEN;
1098
1099 if (mvm->fw_dump_desc)
1100 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
1101 mvm->fw_dump_desc->len;
1102
1103 /* Make room for the SMEM, if it exists */
1104 if (smem_len)
1105 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
1106
1107 /* Make room for the secondary SRAM, if it exists */
1108 if (sram2_len)
1109 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
1110
1111 dump_file = vzalloc(file_len);
1112 if (!dump_file) {
1113 kfree(fw_error_dump);
1114 iwl_mvm_free_fw_dump_desc(mvm);
1115 return;
1116 }
1117
1118 fw_error_dump->op_mode_ptr = dump_file;
1119
1120 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
1121 dump_data = (void *)dump_file->data;
1122
1123 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
1124 dump_data->len = cpu_to_le32(sizeof(*dump_info));
1125 dump_info = (void *) dump_data->data;
1126 dump_info->device_family =
1127 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
1128 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
1129 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
1130 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
1131 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
1132 sizeof(dump_info->fw_human_readable));
1133 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1134 sizeof(dump_info->dev_human_readable));
1135 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1136 sizeof(dump_info->bus_human_readable));
1137
1138 dump_data = iwl_fw_error_next_data(dump_data);
1139 /* We only dump the FIFOs if the FW is in error state */
1140 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1141 iwl_mvm_dump_fifos(mvm, &dump_data);
1142
1143 if (mvm->fw_dump_desc) {
1144 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
1145 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
1146 mvm->fw_dump_desc->len);
1147 dump_trig = (void *)dump_data->data;
1148 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
1149 sizeof(*dump_trig) + mvm->fw_dump_desc->len);
1150
1151 /* now we can free this copy */
1152 iwl_mvm_free_fw_dump_desc(mvm);
1153 dump_data = iwl_fw_error_next_data(dump_data);
1154 }
1155
1156 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1157 dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1158 dump_mem = (void *)dump_data->data;
1159 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1160 dump_mem->offset = cpu_to_le32(sram_ofs);
1161 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
1162 sram_len);
1163
1164 if (smem_len) {
1165 dump_data = iwl_fw_error_next_data(dump_data);
1166 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1167 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1168 dump_mem = (void *)dump_data->data;
1169 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1170 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
1171 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
1172 dump_mem->data, smem_len);
1173 }
1174
1175 if (sram2_len) {
1176 dump_data = iwl_fw_error_next_data(dump_data);
1177 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1178 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1179 dump_mem = (void *)dump_data->data;
1180 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1181 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1182 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1183 dump_mem->data, sram2_len);
1184 }
1185
1186 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1187 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) {
1188 dump_data = iwl_fw_error_next_data(dump_data);
1189 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1190 dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN +
1191 sizeof(*dump_mem));
1192 dump_mem = (void *)dump_data->data;
1193 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1194 dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET);
1195 iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET,
1196 dump_mem->data, IWL8260_ICCM_LEN);
1197 }
1198
1199 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
1200 fw_error_dump->op_mode_len = file_len;
1201 if (fw_error_dump->trans_ptr)
1202 file_len += fw_error_dump->trans_ptr->len;
1203 dump_file->file_len = cpu_to_le32(file_len);
1204
1205 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1206 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
1207
1208 clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
1209 }
1210
1211 struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
1212 .trig_desc = {
1213 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
1214 },
1215 };
1216
1217 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1218 {
1219 /* clear the D3 reconfig, we only need it to avoid dumping a
1220 * firmware coredump on reconfiguration, we shouldn't do that
1221 * on D3->D0 transition
1222 */
1223 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1224 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1225 iwl_mvm_fw_error_dump(mvm);
1226 }
1227
1228 /* cleanup all stale references (scan, roc), but keep the
1229 * ucode_down ref until reconfig is complete
1230 */
1231 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1232
1233 iwl_trans_stop_device(mvm->trans);
1234
1235 mvm->scan_status = 0;
1236 mvm->ps_disabled = false;
1237 mvm->calibrating = false;
1238
1239 /* just in case one was running */
1240 ieee80211_remain_on_channel_expired(mvm->hw);
1241
1242 ieee80211_iterate_active_interfaces_atomic(
1243 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1244 iwl_mvm_cleanup_iterator, mvm);
1245
1246 mvm->p2p_device_vif = NULL;
1247 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1248
1249 iwl_mvm_reset_phy_ctxts(mvm);
1250 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1251 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1252 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1253 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1254 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1255 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1256 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1257 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1258 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1259
1260 ieee80211_wake_queues(mvm->hw);
1261
1262 /* clear any stale d0i3 state */
1263 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1264
1265 mvm->vif_count = 0;
1266 mvm->rx_ba_sessions = 0;
1267 mvm->fw_dbg_conf = FW_DBG_INVALID;
1268
1269 /* keep statistics ticking */
1270 iwl_mvm_accu_radio_stats(mvm);
1271 }
1272
1273 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1274 {
1275 int ret;
1276
1277 lockdep_assert_held(&mvm->mutex);
1278
1279 /* Clean up some internal and mac80211 state on restart */
1280 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1281 iwl_mvm_restart_cleanup(mvm);
1282
1283 ret = iwl_mvm_up(mvm);
1284
1285 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1286 /* Something went wrong - we need to finish some cleanup
1287 * that normally iwl_mvm_mac_restart_complete() below
1288 * would do.
1289 */
1290 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1291 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1292 }
1293
1294 return ret;
1295 }
1296
1297 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1298 {
1299 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1300 int ret;
1301
1302 /* Some hw restart cleanups must not hold the mutex */
1303 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1304 /*
1305 * Make sure we are out of d0i3. This is needed
1306 * to make sure the reference accounting is correct
1307 * (and there is no stale d0i3_exit_work).
1308 */
1309 wait_event_timeout(mvm->d0i3_exit_waitq,
1310 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1311 &mvm->status),
1312 HZ);
1313 }
1314
1315 mutex_lock(&mvm->mutex);
1316 ret = __iwl_mvm_mac_start(mvm);
1317 mutex_unlock(&mvm->mutex);
1318
1319 return ret;
1320 }
1321
1322 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1323 {
1324 int ret;
1325
1326 mutex_lock(&mvm->mutex);
1327
1328 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1329 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1330 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1331 if (ret)
1332 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1333 ret);
1334
1335 /* allow transport/FW low power modes */
1336 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1337
1338 /*
1339 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1340 * of packets the FW sent out, so we must reconnect.
1341 */
1342 iwl_mvm_teardown_tdls_peers(mvm);
1343
1344 mutex_unlock(&mvm->mutex);
1345 }
1346
1347 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1348 {
1349 bool exit_now;
1350
1351 if (!iwl_mvm_is_d0i3_supported(mvm))
1352 return;
1353
1354 mutex_lock(&mvm->d0i3_suspend_mutex);
1355 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1356 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1357 &mvm->d0i3_suspend_flags);
1358 mutex_unlock(&mvm->d0i3_suspend_mutex);
1359
1360 if (exit_now) {
1361 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1362 _iwl_mvm_exit_d0i3(mvm);
1363 }
1364
1365 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1366 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1367 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1368 &mvm->status),
1369 HZ))
1370 WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1371 }
1372
1373 static void
1374 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1375 enum ieee80211_reconfig_type reconfig_type)
1376 {
1377 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1378
1379 switch (reconfig_type) {
1380 case IEEE80211_RECONFIG_TYPE_RESTART:
1381 iwl_mvm_restart_complete(mvm);
1382 break;
1383 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1384 iwl_mvm_resume_complete(mvm);
1385 break;
1386 }
1387 }
1388
1389 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1390 {
1391 lockdep_assert_held(&mvm->mutex);
1392
1393 /* firmware counters are obviously reset now, but we shouldn't
1394 * partially track so also clear the fw_reset_accu counters.
1395 */
1396 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1397
1398 /*
1399 * Disallow low power states when the FW is down by taking
1400 * the UCODE_DOWN ref. in case of ongoing hw restart the
1401 * ref is already taken, so don't take it again.
1402 */
1403 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1404 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1405
1406 /* async_handlers_wk is now blocked */
1407
1408 /*
1409 * The work item could be running or queued if the
1410 * ROC time event stops just as we get here.
1411 */
1412 cancel_work_sync(&mvm->roc_done_wk);
1413
1414 iwl_trans_stop_device(mvm->trans);
1415
1416 iwl_mvm_async_handlers_purge(mvm);
1417 /* async_handlers_list is empty and will stay empty: HW is stopped */
1418
1419 /* the fw is stopped, the aux sta is dead: clean up driver state */
1420 iwl_mvm_del_aux_sta(mvm);
1421
1422 /*
1423 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1424 * won't be called in this case).
1425 */
1426 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1427
1428 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1429 * make sure there's nothing left there and warn if any is found.
1430 */
1431 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
1432 int i;
1433
1434 for (i = 0; i < mvm->max_scans; i++) {
1435 if (WARN_ONCE(mvm->scan_uid[i],
1436 "UMAC scan UID %d was not cleaned\n",
1437 mvm->scan_uid[i]))
1438 mvm->scan_uid[i] = 0;
1439 }
1440 }
1441
1442 mvm->ucode_loaded = false;
1443 }
1444
1445 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1446 {
1447 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1448
1449 flush_work(&mvm->d0i3_exit_work);
1450 flush_work(&mvm->async_handlers_wk);
1451 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1452 iwl_mvm_free_fw_dump_desc(mvm);
1453
1454 mutex_lock(&mvm->mutex);
1455 __iwl_mvm_mac_stop(mvm);
1456 mutex_unlock(&mvm->mutex);
1457
1458 /*
1459 * The worker might have been waiting for the mutex, let it run and
1460 * discover that its list is now empty.
1461 */
1462 cancel_work_sync(&mvm->async_handlers_wk);
1463 }
1464
1465 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1466 {
1467 u16 i;
1468
1469 lockdep_assert_held(&mvm->mutex);
1470
1471 for (i = 0; i < NUM_PHY_CTX; i++)
1472 if (!mvm->phy_ctxts[i].ref)
1473 return &mvm->phy_ctxts[i];
1474
1475 IWL_ERR(mvm, "No available PHY context\n");
1476 return NULL;
1477 }
1478
1479 static int iwl_mvm_set_tx_power_old(struct iwl_mvm *mvm,
1480 struct ieee80211_vif *vif, s8 tx_power)
1481 {
1482 /* FW is in charge of regulatory enforcement */
1483 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1484 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1485 .pwr_restriction = cpu_to_le16(tx_power),
1486 };
1487
1488 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1489 sizeof(reduce_txpwr_cmd),
1490 &reduce_txpwr_cmd);
1491 }
1492
1493 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1494 s16 tx_power)
1495 {
1496 struct iwl_dev_tx_power_cmd cmd = {
1497 .set_mode = 0,
1498 .mac_context_id =
1499 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1500 .pwr_restriction = cpu_to_le16(8 * tx_power),
1501 };
1502
1503 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_TX_POWER_DEV))
1504 return iwl_mvm_set_tx_power_old(mvm, vif, tx_power);
1505
1506 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1507 cmd.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1508
1509 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1510 sizeof(cmd), &cmd);
1511 }
1512
1513 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1514 struct ieee80211_vif *vif)
1515 {
1516 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1517 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1518 int ret;
1519
1520 mvmvif->mvm = mvm;
1521
1522 /*
1523 * make sure D0i3 exit is completed, otherwise a target access
1524 * during tx queue configuration could be done when still in
1525 * D0i3 state.
1526 */
1527 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1528 if (ret)
1529 return ret;
1530
1531 /*
1532 * Not much to do here. The stack will not allow interface
1533 * types or combinations that we didn't advertise, so we
1534 * don't really have to check the types.
1535 */
1536
1537 mutex_lock(&mvm->mutex);
1538
1539 /* make sure that beacon statistics don't go backwards with FW reset */
1540 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1541 mvmvif->beacon_stats.accu_num_beacons +=
1542 mvmvif->beacon_stats.num_beacons;
1543
1544 /* Allocate resources for the MAC context, and add it to the fw */
1545 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1546 if (ret)
1547 goto out_unlock;
1548
1549 /* Counting number of interfaces is needed for legacy PM */
1550 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1551 mvm->vif_count++;
1552
1553 /*
1554 * The AP binding flow can be done only after the beacon
1555 * template is configured (which happens only in the mac80211
1556 * start_ap() flow), and adding the broadcast station can happen
1557 * only after the binding.
1558 * In addition, since modifying the MAC before adding a bcast
1559 * station is not allowed by the FW, delay the adding of MAC context to
1560 * the point where we can also add the bcast station.
1561 * In short: there's not much we can do at this point, other than
1562 * allocating resources :)
1563 */
1564 if (vif->type == NL80211_IFTYPE_AP ||
1565 vif->type == NL80211_IFTYPE_ADHOC) {
1566 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1567 if (ret) {
1568 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1569 goto out_release;
1570 }
1571
1572 iwl_mvm_vif_dbgfs_register(mvm, vif);
1573 goto out_unlock;
1574 }
1575
1576 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1577 if (ret)
1578 goto out_release;
1579
1580 ret = iwl_mvm_power_update_mac(mvm);
1581 if (ret)
1582 goto out_remove_mac;
1583
1584 /* beacon filtering */
1585 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1586 if (ret)
1587 goto out_remove_mac;
1588
1589 if (!mvm->bf_allowed_vif &&
1590 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1591 mvm->bf_allowed_vif = mvmvif;
1592 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1593 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1594 }
1595
1596 /*
1597 * P2P_DEVICE interface does not have a channel context assigned to it,
1598 * so a dedicated PHY context is allocated to it and the corresponding
1599 * MAC context is bound to it at this stage.
1600 */
1601 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1602
1603 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1604 if (!mvmvif->phy_ctxt) {
1605 ret = -ENOSPC;
1606 goto out_free_bf;
1607 }
1608
1609 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1610 ret = iwl_mvm_binding_add_vif(mvm, vif);
1611 if (ret)
1612 goto out_unref_phy;
1613
1614 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1615 if (ret)
1616 goto out_unbind;
1617
1618 /* Save a pointer to p2p device vif, so it can later be used to
1619 * update the p2p device MAC when a GO is started/stopped */
1620 mvm->p2p_device_vif = vif;
1621 }
1622
1623 iwl_mvm_vif_dbgfs_register(mvm, vif);
1624 goto out_unlock;
1625
1626 out_unbind:
1627 iwl_mvm_binding_remove_vif(mvm, vif);
1628 out_unref_phy:
1629 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1630 out_free_bf:
1631 if (mvm->bf_allowed_vif == mvmvif) {
1632 mvm->bf_allowed_vif = NULL;
1633 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1634 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1635 }
1636 out_remove_mac:
1637 mvmvif->phy_ctxt = NULL;
1638 iwl_mvm_mac_ctxt_remove(mvm, vif);
1639 out_release:
1640 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1641 mvm->vif_count--;
1642
1643 iwl_mvm_mac_ctxt_release(mvm, vif);
1644 out_unlock:
1645 mutex_unlock(&mvm->mutex);
1646
1647 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1648
1649 return ret;
1650 }
1651
1652 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1653 struct ieee80211_vif *vif)
1654 {
1655 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1656
1657 if (tfd_msk) {
1658 /*
1659 * mac80211 first removes all the stations of the vif and
1660 * then removes the vif. When it removes a station it also
1661 * flushes the AMPDU session. So by now, all the AMPDU sessions
1662 * of all the stations of this vif are closed, and the queues
1663 * of these AMPDU sessions are properly closed.
1664 * We still need to take care of the shared queues of the vif.
1665 * Flush them here.
1666 */
1667 mutex_lock(&mvm->mutex);
1668 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1669 mutex_unlock(&mvm->mutex);
1670
1671 /*
1672 * There are transports that buffer a few frames in the host.
1673 * For these, the flush above isn't enough since while we were
1674 * flushing, the transport might have sent more frames to the
1675 * device. To solve this, wait here until the transport is
1676 * empty. Technically, this could have replaced the flush
1677 * above, but flush is much faster than draining. So flush
1678 * first, and drain to make sure we have no frames in the
1679 * transport anymore.
1680 * If a station still had frames on the shared queues, it is
1681 * already marked as draining, so to complete the draining, we
1682 * just need to wait until the transport is empty.
1683 */
1684 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1685 }
1686
1687 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1688 /*
1689 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1690 * We assume here that all the packets sent to the OFFCHANNEL
1691 * queue are sent in ROC session.
1692 */
1693 flush_work(&mvm->roc_done_wk);
1694 } else {
1695 /*
1696 * By now, all the AC queues are empty. The AGG queues are
1697 * empty too. We already got all the Tx responses for all the
1698 * packets in the queues. The drain work can have been
1699 * triggered. Flush it.
1700 */
1701 flush_work(&mvm->sta_drained_wk);
1702 }
1703 }
1704
1705 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1706 struct ieee80211_vif *vif)
1707 {
1708 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1709 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1710
1711 iwl_mvm_prepare_mac_removal(mvm, vif);
1712
1713 mutex_lock(&mvm->mutex);
1714
1715 if (mvm->bf_allowed_vif == mvmvif) {
1716 mvm->bf_allowed_vif = NULL;
1717 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1718 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1719 }
1720
1721 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1722
1723 /*
1724 * For AP/GO interface, the tear down of the resources allocated to the
1725 * interface is be handled as part of the stop_ap flow.
1726 */
1727 if (vif->type == NL80211_IFTYPE_AP ||
1728 vif->type == NL80211_IFTYPE_ADHOC) {
1729 #ifdef CONFIG_NL80211_TESTMODE
1730 if (vif == mvm->noa_vif) {
1731 mvm->noa_vif = NULL;
1732 mvm->noa_duration = 0;
1733 }
1734 #endif
1735 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1736 goto out_release;
1737 }
1738
1739 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1740 mvm->p2p_device_vif = NULL;
1741 iwl_mvm_rm_bcast_sta(mvm, vif);
1742 iwl_mvm_binding_remove_vif(mvm, vif);
1743 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1744 mvmvif->phy_ctxt = NULL;
1745 }
1746
1747 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1748 mvm->vif_count--;
1749
1750 iwl_mvm_power_update_mac(mvm);
1751 iwl_mvm_mac_ctxt_remove(mvm, vif);
1752
1753 out_release:
1754 iwl_mvm_mac_ctxt_release(mvm, vif);
1755 mutex_unlock(&mvm->mutex);
1756 }
1757
1758 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1759 {
1760 return 0;
1761 }
1762
1763 struct iwl_mvm_mc_iter_data {
1764 struct iwl_mvm *mvm;
1765 int port_id;
1766 };
1767
1768 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1769 struct ieee80211_vif *vif)
1770 {
1771 struct iwl_mvm_mc_iter_data *data = _data;
1772 struct iwl_mvm *mvm = data->mvm;
1773 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1774 int ret, len;
1775
1776 /* if we don't have free ports, mcast frames will be dropped */
1777 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1778 return;
1779
1780 if (vif->type != NL80211_IFTYPE_STATION ||
1781 !vif->bss_conf.assoc)
1782 return;
1783
1784 cmd->port_id = data->port_id++;
1785 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1786 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1787
1788 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1789 if (ret)
1790 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1791 }
1792
1793 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1794 {
1795 struct iwl_mvm_mc_iter_data iter_data = {
1796 .mvm = mvm,
1797 };
1798
1799 lockdep_assert_held(&mvm->mutex);
1800
1801 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1802 return;
1803
1804 ieee80211_iterate_active_interfaces_atomic(
1805 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1806 iwl_mvm_mc_iface_iterator, &iter_data);
1807 }
1808
1809 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1810 struct netdev_hw_addr_list *mc_list)
1811 {
1812 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1813 struct iwl_mcast_filter_cmd *cmd;
1814 struct netdev_hw_addr *addr;
1815 int addr_count;
1816 bool pass_all;
1817 int len;
1818
1819 addr_count = netdev_hw_addr_list_count(mc_list);
1820 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1821 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1822 if (pass_all)
1823 addr_count = 0;
1824
1825 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1826 cmd = kzalloc(len, GFP_ATOMIC);
1827 if (!cmd)
1828 return 0;
1829
1830 if (pass_all) {
1831 cmd->pass_all = 1;
1832 return (u64)(unsigned long)cmd;
1833 }
1834
1835 netdev_hw_addr_list_for_each(addr, mc_list) {
1836 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1837 cmd->count, addr->addr);
1838 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1839 addr->addr, ETH_ALEN);
1840 cmd->count++;
1841 }
1842
1843 return (u64)(unsigned long)cmd;
1844 }
1845
1846 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1847 unsigned int changed_flags,
1848 unsigned int *total_flags,
1849 u64 multicast)
1850 {
1851 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1852 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1853
1854 mutex_lock(&mvm->mutex);
1855
1856 /* replace previous configuration */
1857 kfree(mvm->mcast_filter_cmd);
1858 mvm->mcast_filter_cmd = cmd;
1859
1860 if (!cmd)
1861 goto out;
1862
1863 iwl_mvm_recalc_multicast(mvm);
1864 out:
1865 mutex_unlock(&mvm->mutex);
1866 *total_flags = 0;
1867 }
1868
1869 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1870 struct iwl_bcast_iter_data {
1871 struct iwl_mvm *mvm;
1872 struct iwl_bcast_filter_cmd *cmd;
1873 u8 current_filter;
1874 };
1875
1876 static void
1877 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1878 const struct iwl_fw_bcast_filter *in_filter,
1879 struct iwl_fw_bcast_filter *out_filter)
1880 {
1881 struct iwl_fw_bcast_filter_attr *attr;
1882 int i;
1883
1884 memcpy(out_filter, in_filter, sizeof(*out_filter));
1885
1886 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1887 attr = &out_filter->attrs[i];
1888
1889 if (!attr->mask)
1890 break;
1891
1892 switch (attr->reserved1) {
1893 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1894 if (vif->bss_conf.arp_addr_cnt != 1) {
1895 attr->mask = 0;
1896 continue;
1897 }
1898
1899 attr->val = vif->bss_conf.arp_addr_list[0];
1900 break;
1901 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1902 attr->val = *(__be32 *)&vif->addr[2];
1903 break;
1904 default:
1905 break;
1906 }
1907 attr->reserved1 = 0;
1908 out_filter->num_attrs++;
1909 }
1910 }
1911
1912 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1913 struct ieee80211_vif *vif)
1914 {
1915 struct iwl_bcast_iter_data *data = _data;
1916 struct iwl_mvm *mvm = data->mvm;
1917 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1918 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1919 struct iwl_fw_bcast_mac *bcast_mac;
1920 int i;
1921
1922 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1923 return;
1924
1925 bcast_mac = &cmd->macs[mvmvif->id];
1926
1927 /*
1928 * enable filtering only for associated stations, but not for P2P
1929 * Clients
1930 */
1931 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1932 !vif->bss_conf.assoc)
1933 return;
1934
1935 bcast_mac->default_discard = 1;
1936
1937 /* copy all configured filters */
1938 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1939 /*
1940 * Make sure we don't exceed our filters limit.
1941 * if there is still a valid filter to be configured,
1942 * be on the safe side and just allow bcast for this mac.
1943 */
1944 if (WARN_ON_ONCE(data->current_filter >=
1945 ARRAY_SIZE(cmd->filters))) {
1946 bcast_mac->default_discard = 0;
1947 bcast_mac->attached_filters = 0;
1948 break;
1949 }
1950
1951 iwl_mvm_set_bcast_filter(vif,
1952 &mvm->bcast_filters[i],
1953 &cmd->filters[data->current_filter]);
1954
1955 /* skip current filter if it contains no attributes */
1956 if (!cmd->filters[data->current_filter].num_attrs)
1957 continue;
1958
1959 /* attach the filter to current mac */
1960 bcast_mac->attached_filters |=
1961 cpu_to_le16(BIT(data->current_filter));
1962
1963 data->current_filter++;
1964 }
1965 }
1966
1967 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1968 struct iwl_bcast_filter_cmd *cmd)
1969 {
1970 struct iwl_bcast_iter_data iter_data = {
1971 .mvm = mvm,
1972 .cmd = cmd,
1973 };
1974
1975 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1976 return false;
1977
1978 memset(cmd, 0, sizeof(*cmd));
1979 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1980 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1981
1982 #ifdef CONFIG_IWLWIFI_DEBUGFS
1983 /* use debugfs filters/macs if override is configured */
1984 if (mvm->dbgfs_bcast_filtering.override) {
1985 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1986 sizeof(cmd->filters));
1987 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1988 sizeof(cmd->macs));
1989 return true;
1990 }
1991 #endif
1992
1993 /* if no filters are configured, do nothing */
1994 if (!mvm->bcast_filters)
1995 return false;
1996
1997 /* configure and attach these filters for each associated sta vif */
1998 ieee80211_iterate_active_interfaces(
1999 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2000 iwl_mvm_bcast_filter_iterator, &iter_data);
2001
2002 return true;
2003 }
2004 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2005 struct ieee80211_vif *vif)
2006 {
2007 struct iwl_bcast_filter_cmd cmd;
2008
2009 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
2010 return 0;
2011
2012 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
2013 return 0;
2014
2015 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
2016 sizeof(cmd), &cmd);
2017 }
2018 #else
2019 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2020 struct ieee80211_vif *vif)
2021 {
2022 return 0;
2023 }
2024 #endif
2025
2026 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2027 struct ieee80211_vif *vif,
2028 struct ieee80211_bss_conf *bss_conf,
2029 u32 changes)
2030 {
2031 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2032 int ret;
2033
2034 /*
2035 * Re-calculate the tsf id, as the master-slave relations depend on the
2036 * beacon interval, which was not known when the station interface was
2037 * added.
2038 */
2039 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
2040 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2041
2042 /*
2043 * If we're not associated yet, take the (new) BSSID before associating
2044 * so the firmware knows. If we're already associated, then use the old
2045 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2046 * branch for disassociation below.
2047 */
2048 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2049 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2050
2051 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2052 if (ret)
2053 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2054
2055 /* after sending it once, adopt mac80211 data */
2056 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2057 mvmvif->associated = bss_conf->assoc;
2058
2059 if (changes & BSS_CHANGED_ASSOC) {
2060 if (bss_conf->assoc) {
2061 /* clear statistics to get clean beacon counter */
2062 iwl_mvm_request_statistics(mvm, true);
2063 memset(&mvmvif->beacon_stats, 0,
2064 sizeof(mvmvif->beacon_stats));
2065
2066 /* add quota for this interface */
2067 ret = iwl_mvm_update_quotas(mvm, true, NULL);
2068 if (ret) {
2069 IWL_ERR(mvm, "failed to update quotas\n");
2070 return;
2071 }
2072
2073 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2074 &mvm->status)) {
2075 /*
2076 * If we're restarting then the firmware will
2077 * obviously have lost synchronisation with
2078 * the AP. It will attempt to synchronise by
2079 * itself, but we can make it more reliable by
2080 * scheduling a session protection time event.
2081 *
2082 * The firmware needs to receive a beacon to
2083 * catch up with synchronisation, use 110% of
2084 * the beacon interval.
2085 *
2086 * Set a large maximum delay to allow for more
2087 * than a single interface.
2088 */
2089 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2090 iwl_mvm_protect_session(mvm, vif, dur, dur,
2091 5 * dur, false);
2092 }
2093
2094 iwl_mvm_sf_update(mvm, vif, false);
2095 iwl_mvm_power_vif_assoc(mvm, vif);
2096 if (vif->p2p) {
2097 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2098 iwl_mvm_update_smps(mvm, vif,
2099 IWL_MVM_SMPS_REQ_PROT,
2100 IEEE80211_SMPS_DYNAMIC);
2101 }
2102 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2103 /*
2104 * If update fails - SF might be running in associated
2105 * mode while disassociated - which is forbidden.
2106 */
2107 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2108 "Failed to update SF upon disassociation\n");
2109
2110 /* remove AP station now that the MAC is unassoc */
2111 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
2112 if (ret)
2113 IWL_ERR(mvm, "failed to remove AP station\n");
2114
2115 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2116 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
2117 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
2118 /* remove quota for this interface */
2119 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2120 if (ret)
2121 IWL_ERR(mvm, "failed to update quotas\n");
2122
2123 if (vif->p2p)
2124 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2125
2126 /* this will take the cleared BSSID from bss_conf */
2127 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2128 if (ret)
2129 IWL_ERR(mvm,
2130 "failed to update MAC %pM (clear after unassoc)\n",
2131 vif->addr);
2132 }
2133
2134 iwl_mvm_recalc_multicast(mvm);
2135 iwl_mvm_configure_bcast_filter(mvm, vif);
2136
2137 /* reset rssi values */
2138 mvmvif->bf_data.ave_beacon_signal = 0;
2139
2140 iwl_mvm_bt_coex_vif_change(mvm);
2141 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2142 IEEE80211_SMPS_AUTOMATIC);
2143 } else if (changes & BSS_CHANGED_BEACON_INFO) {
2144 /*
2145 * We received a beacon _after_ association so
2146 * remove the session protection.
2147 */
2148 iwl_mvm_remove_time_event(mvm, mvmvif,
2149 &mvmvif->time_event_data);
2150 }
2151
2152 if (changes & BSS_CHANGED_BEACON_INFO) {
2153 iwl_mvm_sf_update(mvm, vif, false);
2154 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2155 }
2156
2157 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
2158 ret = iwl_mvm_power_update_mac(mvm);
2159 if (ret)
2160 IWL_ERR(mvm, "failed to update power mode\n");
2161 }
2162
2163 if (changes & BSS_CHANGED_TXPOWER) {
2164 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2165 bss_conf->txpower);
2166 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2167 }
2168
2169 if (changes & BSS_CHANGED_CQM) {
2170 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2171 /* reset cqm events tracking */
2172 mvmvif->bf_data.last_cqm_event = 0;
2173 if (mvmvif->bf_data.bf_enabled) {
2174 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2175 if (ret)
2176 IWL_ERR(mvm,
2177 "failed to update CQM thresholds\n");
2178 }
2179 }
2180
2181 if (changes & BSS_CHANGED_ARP_FILTER) {
2182 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2183 iwl_mvm_configure_bcast_filter(mvm, vif);
2184 }
2185 }
2186
2187 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2188 struct ieee80211_vif *vif)
2189 {
2190 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2191 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2192 int ret;
2193
2194 /*
2195 * iwl_mvm_mac_ctxt_add() might read directly from the device
2196 * (the system time), so make sure it is available.
2197 */
2198 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2199 if (ret)
2200 return ret;
2201
2202 mutex_lock(&mvm->mutex);
2203
2204 /* Send the beacon template */
2205 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2206 if (ret)
2207 goto out_unlock;
2208
2209 /*
2210 * Re-calculate the tsf id, as the master-slave relations depend on the
2211 * beacon interval, which was not known when the AP interface was added.
2212 */
2213 if (vif->type == NL80211_IFTYPE_AP)
2214 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2215
2216 /* Add the mac context */
2217 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2218 if (ret)
2219 goto out_unlock;
2220
2221 /* Perform the binding */
2222 ret = iwl_mvm_binding_add_vif(mvm, vif);
2223 if (ret)
2224 goto out_remove;
2225
2226 /* Send the bcast station. At this stage the TBTT and DTIM time events
2227 * are added and applied to the scheduler */
2228 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2229 if (ret)
2230 goto out_unbind;
2231
2232 /* must be set before quota calculations */
2233 mvmvif->ap_ibss_active = true;
2234
2235 /* power updated needs to be done before quotas */
2236 iwl_mvm_power_update_mac(mvm);
2237
2238 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2239 if (ret)
2240 goto out_quota_failed;
2241
2242 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2243 if (vif->p2p && mvm->p2p_device_vif)
2244 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2245
2246 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2247
2248 iwl_mvm_bt_coex_vif_change(mvm);
2249
2250 /* we don't support TDLS during DCM */
2251 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2252 iwl_mvm_teardown_tdls_peers(mvm);
2253
2254 goto out_unlock;
2255
2256 out_quota_failed:
2257 iwl_mvm_power_update_mac(mvm);
2258 mvmvif->ap_ibss_active = false;
2259 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2260 out_unbind:
2261 iwl_mvm_binding_remove_vif(mvm, vif);
2262 out_remove:
2263 iwl_mvm_mac_ctxt_remove(mvm, vif);
2264 out_unlock:
2265 mutex_unlock(&mvm->mutex);
2266 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2267 return ret;
2268 }
2269
2270 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2271 struct ieee80211_vif *vif)
2272 {
2273 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2274 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2275
2276 iwl_mvm_prepare_mac_removal(mvm, vif);
2277
2278 mutex_lock(&mvm->mutex);
2279
2280 /* Handle AP stop while in CSA */
2281 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2282 iwl_mvm_remove_time_event(mvm, mvmvif,
2283 &mvmvif->time_event_data);
2284 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2285 }
2286
2287 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2288 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2289 mvm->csa_tx_block_bcn_timeout = 0;
2290 }
2291
2292 mvmvif->ap_ibss_active = false;
2293 mvm->ap_last_beacon_gp2 = 0;
2294
2295 iwl_mvm_bt_coex_vif_change(mvm);
2296
2297 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2298
2299 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2300 if (vif->p2p && mvm->p2p_device_vif)
2301 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2302
2303 iwl_mvm_update_quotas(mvm, false, NULL);
2304 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2305 iwl_mvm_binding_remove_vif(mvm, vif);
2306
2307 iwl_mvm_power_update_mac(mvm);
2308
2309 iwl_mvm_mac_ctxt_remove(mvm, vif);
2310
2311 mutex_unlock(&mvm->mutex);
2312 }
2313
2314 static void
2315 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2316 struct ieee80211_vif *vif,
2317 struct ieee80211_bss_conf *bss_conf,
2318 u32 changes)
2319 {
2320 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2321
2322 /* Changes will be applied when the AP/IBSS is started */
2323 if (!mvmvif->ap_ibss_active)
2324 return;
2325
2326 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2327 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2328 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2329 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2330
2331 /* Need to send a new beacon template to the FW */
2332 if (changes & BSS_CHANGED_BEACON &&
2333 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2334 IWL_WARN(mvm, "Failed updating beacon data\n");
2335
2336 if (changes & BSS_CHANGED_TXPOWER) {
2337 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2338 bss_conf->txpower);
2339 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2340 }
2341
2342 }
2343
2344 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2345 struct ieee80211_vif *vif,
2346 struct ieee80211_bss_conf *bss_conf,
2347 u32 changes)
2348 {
2349 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2350
2351 /*
2352 * iwl_mvm_bss_info_changed_station() might call
2353 * iwl_mvm_protect_session(), which reads directly from
2354 * the device (the system time), so make sure it is available.
2355 */
2356 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2357 return;
2358
2359 mutex_lock(&mvm->mutex);
2360
2361 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2362 iwl_mvm_scan_offload_stop(mvm, true);
2363
2364 switch (vif->type) {
2365 case NL80211_IFTYPE_STATION:
2366 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2367 break;
2368 case NL80211_IFTYPE_AP:
2369 case NL80211_IFTYPE_ADHOC:
2370 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2371 break;
2372 default:
2373 /* shouldn't happen */
2374 WARN_ON_ONCE(1);
2375 }
2376
2377 mutex_unlock(&mvm->mutex);
2378 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2379 }
2380
2381 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2382 struct ieee80211_vif *vif,
2383 struct ieee80211_scan_request *hw_req)
2384 {
2385 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2386 int ret;
2387
2388 if (hw_req->req.n_channels == 0 ||
2389 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2390 return -EINVAL;
2391
2392 mutex_lock(&mvm->mutex);
2393 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2394 mutex_unlock(&mvm->mutex);
2395
2396 return ret;
2397 }
2398
2399 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2400 struct ieee80211_vif *vif)
2401 {
2402 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2403
2404 mutex_lock(&mvm->mutex);
2405
2406 /* Due to a race condition, it's possible that mac80211 asks
2407 * us to stop a hw_scan when it's already stopped. This can
2408 * happen, for instance, if we stopped the scan ourselves,
2409 * called ieee80211_scan_completed() and the userspace called
2410 * cancel scan scan before ieee80211_scan_work() could run.
2411 * To handle that, simply return if the scan is not running.
2412 */
2413 /* FIXME: for now, we ignore this race for UMAC scans, since
2414 * they don't set the scan_status.
2415 */
2416 if ((mvm->scan_status & IWL_MVM_SCAN_REGULAR) ||
2417 (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2418 iwl_mvm_cancel_scan(mvm);
2419
2420 mutex_unlock(&mvm->mutex);
2421 }
2422
2423 static void
2424 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2425 struct ieee80211_sta *sta, u16 tids,
2426 int num_frames,
2427 enum ieee80211_frame_release_type reason,
2428 bool more_data)
2429 {
2430 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2431
2432 /* Called when we need to transmit (a) frame(s) from mac80211 */
2433
2434 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2435 tids, more_data, false);
2436 }
2437
2438 static void
2439 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2440 struct ieee80211_sta *sta, u16 tids,
2441 int num_frames,
2442 enum ieee80211_frame_release_type reason,
2443 bool more_data)
2444 {
2445 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2446
2447 /* Called when we need to transmit (a) frame(s) from agg queue */
2448
2449 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2450 tids, more_data, true);
2451 }
2452
2453 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2454 struct ieee80211_vif *vif,
2455 enum sta_notify_cmd cmd,
2456 struct ieee80211_sta *sta)
2457 {
2458 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2459 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2460 unsigned long txqs = 0, tids = 0;
2461 int tid;
2462
2463 spin_lock_bh(&mvmsta->lock);
2464 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2465 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2466
2467 if (tid_data->state != IWL_AGG_ON &&
2468 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2469 continue;
2470
2471 __set_bit(tid_data->txq_id, &txqs);
2472
2473 if (iwl_mvm_tid_queued(tid_data) == 0)
2474 continue;
2475
2476 __set_bit(tid, &tids);
2477 }
2478
2479 switch (cmd) {
2480 case STA_NOTIFY_SLEEP:
2481 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2482 ieee80211_sta_block_awake(hw, sta, true);
2483
2484 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2485 ieee80211_sta_set_buffered(sta, tid, true);
2486
2487 if (txqs)
2488 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2489 /*
2490 * The fw updates the STA to be asleep. Tx packets on the Tx
2491 * queues to this station will not be transmitted. The fw will
2492 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2493 */
2494 break;
2495 case STA_NOTIFY_AWAKE:
2496 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2497 break;
2498
2499 if (txqs)
2500 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2501 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2502 break;
2503 default:
2504 break;
2505 }
2506 spin_unlock_bh(&mvmsta->lock);
2507 }
2508
2509 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2510 struct ieee80211_vif *vif,
2511 struct ieee80211_sta *sta)
2512 {
2513 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2514 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2515
2516 /*
2517 * This is called before mac80211 does RCU synchronisation,
2518 * so here we already invalidate our internal RCU-protected
2519 * station pointer. The rest of the code will thus no longer
2520 * be able to find the station this way, and we don't rely
2521 * on further RCU synchronisation after the sta_state()
2522 * callback deleted the station.
2523 */
2524 mutex_lock(&mvm->mutex);
2525 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2526 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2527 ERR_PTR(-ENOENT));
2528 mutex_unlock(&mvm->mutex);
2529 }
2530
2531 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2532 const u8 *bssid)
2533 {
2534 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2535 return;
2536
2537 if (iwlwifi_mod_params.uapsd_disable) {
2538 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2539 return;
2540 }
2541
2542 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2543 }
2544
2545 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2546 struct ieee80211_vif *vif,
2547 struct ieee80211_sta *sta,
2548 enum ieee80211_sta_state old_state,
2549 enum ieee80211_sta_state new_state)
2550 {
2551 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2552 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2553 int ret;
2554
2555 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2556 sta->addr, old_state, new_state);
2557
2558 /* this would be a mac80211 bug ... but don't crash */
2559 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2560 return -EINVAL;
2561
2562 /* if a STA is being removed, reuse its ID */
2563 flush_work(&mvm->sta_drained_wk);
2564
2565 mutex_lock(&mvm->mutex);
2566 if (old_state == IEEE80211_STA_NOTEXIST &&
2567 new_state == IEEE80211_STA_NONE) {
2568 /*
2569 * Firmware bug - it'll crash if the beacon interval is less
2570 * than 16. We can't avoid connecting at all, so refuse the
2571 * station state change, this will cause mac80211 to abandon
2572 * attempts to connect to this AP, and eventually wpa_s will
2573 * blacklist the AP...
2574 */
2575 if (vif->type == NL80211_IFTYPE_STATION &&
2576 vif->bss_conf.beacon_int < 16) {
2577 IWL_ERR(mvm,
2578 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2579 sta->addr, vif->bss_conf.beacon_int);
2580 ret = -EINVAL;
2581 goto out_unlock;
2582 }
2583
2584 if (sta->tdls &&
2585 (vif->p2p ||
2586 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2587 IWL_MVM_TDLS_STA_COUNT ||
2588 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2589 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2590 ret = -EBUSY;
2591 goto out_unlock;
2592 }
2593
2594 ret = iwl_mvm_add_sta(mvm, vif, sta);
2595 if (sta->tdls && ret == 0)
2596 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2597 } else if (old_state == IEEE80211_STA_NONE &&
2598 new_state == IEEE80211_STA_AUTH) {
2599 /*
2600 * EBS may be disabled due to previous failures reported by FW.
2601 * Reset EBS status here assuming environment has been changed.
2602 */
2603 mvm->last_ebs_successful = true;
2604 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2605 ret = 0;
2606 } else if (old_state == IEEE80211_STA_AUTH &&
2607 new_state == IEEE80211_STA_ASSOC) {
2608 ret = iwl_mvm_update_sta(mvm, vif, sta);
2609 if (ret == 0)
2610 iwl_mvm_rs_rate_init(mvm, sta,
2611 mvmvif->phy_ctxt->channel->band,
2612 true);
2613 } else if (old_state == IEEE80211_STA_ASSOC &&
2614 new_state == IEEE80211_STA_AUTHORIZED) {
2615
2616 /* we don't support TDLS during DCM */
2617 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2618 iwl_mvm_teardown_tdls_peers(mvm);
2619
2620 /* enable beacon filtering */
2621 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2622 ret = 0;
2623 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2624 new_state == IEEE80211_STA_ASSOC) {
2625 /* disable beacon filtering */
2626 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2627 ret = 0;
2628 } else if (old_state == IEEE80211_STA_ASSOC &&
2629 new_state == IEEE80211_STA_AUTH) {
2630 ret = 0;
2631 } else if (old_state == IEEE80211_STA_AUTH &&
2632 new_state == IEEE80211_STA_NONE) {
2633 ret = 0;
2634 } else if (old_state == IEEE80211_STA_NONE &&
2635 new_state == IEEE80211_STA_NOTEXIST) {
2636 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2637 if (sta->tdls)
2638 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2639 } else {
2640 ret = -EIO;
2641 }
2642 out_unlock:
2643 mutex_unlock(&mvm->mutex);
2644
2645 if (sta->tdls && ret == 0) {
2646 if (old_state == IEEE80211_STA_NOTEXIST &&
2647 new_state == IEEE80211_STA_NONE)
2648 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2649 else if (old_state == IEEE80211_STA_NONE &&
2650 new_state == IEEE80211_STA_NOTEXIST)
2651 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2652 }
2653
2654 return ret;
2655 }
2656
2657 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2658 {
2659 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2660
2661 mvm->rts_threshold = value;
2662
2663 return 0;
2664 }
2665
2666 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2667 struct ieee80211_vif *vif,
2668 struct ieee80211_sta *sta, u32 changed)
2669 {
2670 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2671
2672 if (vif->type == NL80211_IFTYPE_STATION &&
2673 changed & IEEE80211_RC_NSS_CHANGED)
2674 iwl_mvm_sf_update(mvm, vif, false);
2675 }
2676
2677 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2678 struct ieee80211_vif *vif, u16 ac,
2679 const struct ieee80211_tx_queue_params *params)
2680 {
2681 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2682 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2683
2684 mvmvif->queue_params[ac] = *params;
2685
2686 /*
2687 * No need to update right away, we'll get BSS_CHANGED_QOS
2688 * The exception is P2P_DEVICE interface which needs immediate update.
2689 */
2690 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2691 int ret;
2692
2693 mutex_lock(&mvm->mutex);
2694 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2695 mutex_unlock(&mvm->mutex);
2696 return ret;
2697 }
2698 return 0;
2699 }
2700
2701 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2702 struct ieee80211_vif *vif)
2703 {
2704 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2705 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2706 200 + vif->bss_conf.beacon_int);
2707 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2708 100 + vif->bss_conf.beacon_int);
2709
2710 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2711 return;
2712
2713 /*
2714 * iwl_mvm_protect_session() reads directly from the device
2715 * (the system time), so make sure it is available.
2716 */
2717 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2718 return;
2719
2720 mutex_lock(&mvm->mutex);
2721 /* Try really hard to protect the session and hear a beacon */
2722 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2723 mutex_unlock(&mvm->mutex);
2724
2725 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2726 }
2727
2728 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2729 struct ieee80211_vif *vif,
2730 struct cfg80211_sched_scan_request *req,
2731 struct ieee80211_scan_ies *ies)
2732 {
2733 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2734
2735 int ret;
2736
2737 mutex_lock(&mvm->mutex);
2738
2739 if (!vif->bss_conf.idle) {
2740 ret = -EBUSY;
2741 goto out;
2742 }
2743
2744 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2745
2746 out:
2747 mutex_unlock(&mvm->mutex);
2748 return ret;
2749 }
2750
2751 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2752 struct ieee80211_vif *vif)
2753 {
2754 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2755 int ret;
2756
2757 mutex_lock(&mvm->mutex);
2758
2759 /* Due to a race condition, it's possible that mac80211 asks
2760 * us to stop a sched_scan when it's already stopped. This
2761 * can happen, for instance, if we stopped the scan ourselves,
2762 * called ieee80211_sched_scan_stopped() and the userspace called
2763 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2764 * could run. To handle this, simply return if the scan is
2765 * not running.
2766 */
2767 /* FIXME: for now, we ignore this race for UMAC scans, since
2768 * they don't set the scan_status.
2769 */
2770 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED) &&
2771 !(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2772 mutex_unlock(&mvm->mutex);
2773 return 0;
2774 }
2775
2776 ret = iwl_mvm_scan_offload_stop(mvm, false);
2777 mutex_unlock(&mvm->mutex);
2778 iwl_mvm_wait_for_async_handlers(mvm);
2779
2780 return ret;
2781 }
2782
2783 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2784 enum set_key_cmd cmd,
2785 struct ieee80211_vif *vif,
2786 struct ieee80211_sta *sta,
2787 struct ieee80211_key_conf *key)
2788 {
2789 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2790 int ret;
2791
2792 if (iwlwifi_mod_params.sw_crypto) {
2793 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2794 return -EOPNOTSUPP;
2795 }
2796
2797 switch (key->cipher) {
2798 case WLAN_CIPHER_SUITE_TKIP:
2799 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2800 /* fall-through */
2801 case WLAN_CIPHER_SUITE_CCMP:
2802 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2803 break;
2804 case WLAN_CIPHER_SUITE_AES_CMAC:
2805 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2806 break;
2807 case WLAN_CIPHER_SUITE_WEP40:
2808 case WLAN_CIPHER_SUITE_WEP104:
2809 /* For non-client mode, only use WEP keys for TX as we probably
2810 * don't have a station yet anyway and would then have to keep
2811 * track of the keys, linking them to each of the clients/peers
2812 * as they appear. For now, don't do that, for performance WEP
2813 * offload doesn't really matter much, but we need it for some
2814 * other offload features in client mode.
2815 */
2816 if (vif->type != NL80211_IFTYPE_STATION)
2817 return 0;
2818 break;
2819 default:
2820 /* currently FW supports only one optional cipher scheme */
2821 if (hw->n_cipher_schemes &&
2822 hw->cipher_schemes->cipher == key->cipher)
2823 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2824 else
2825 return -EOPNOTSUPP;
2826 }
2827
2828 mutex_lock(&mvm->mutex);
2829
2830 switch (cmd) {
2831 case SET_KEY:
2832 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2833 vif->type == NL80211_IFTYPE_AP) && !sta) {
2834 /*
2835 * GTK on AP interface is a TX-only key, return 0;
2836 * on IBSS they're per-station and because we're lazy
2837 * we don't support them for RX, so do the same.
2838 */
2839 ret = 0;
2840 key->hw_key_idx = STA_KEY_IDX_INVALID;
2841 break;
2842 }
2843
2844 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2845 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2846 if (ret) {
2847 IWL_WARN(mvm, "set key failed\n");
2848 /*
2849 * can't add key for RX, but we don't need it
2850 * in the device for TX so still return 0
2851 */
2852 key->hw_key_idx = STA_KEY_IDX_INVALID;
2853 ret = 0;
2854 }
2855
2856 break;
2857 case DISABLE_KEY:
2858 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2859 ret = 0;
2860 break;
2861 }
2862
2863 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2864 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2865 break;
2866 default:
2867 ret = -EINVAL;
2868 }
2869
2870 mutex_unlock(&mvm->mutex);
2871 return ret;
2872 }
2873
2874 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2875 struct ieee80211_vif *vif,
2876 struct ieee80211_key_conf *keyconf,
2877 struct ieee80211_sta *sta,
2878 u32 iv32, u16 *phase1key)
2879 {
2880 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2881
2882 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2883 return;
2884
2885 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2886 }
2887
2888
2889 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2890 struct iwl_rx_packet *pkt, void *data)
2891 {
2892 struct iwl_mvm *mvm =
2893 container_of(notif_wait, struct iwl_mvm, notif_wait);
2894 struct iwl_hs20_roc_res *resp;
2895 int resp_len = iwl_rx_packet_payload_len(pkt);
2896 struct iwl_mvm_time_event_data *te_data = data;
2897
2898 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2899 return true;
2900
2901 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2902 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2903 return true;
2904 }
2905
2906 resp = (void *)pkt->data;
2907
2908 IWL_DEBUG_TE(mvm,
2909 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2910 resp->status, resp->event_unique_id);
2911
2912 te_data->uid = le32_to_cpu(resp->event_unique_id);
2913 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2914 te_data->uid);
2915
2916 spin_lock_bh(&mvm->time_event_lock);
2917 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2918 spin_unlock_bh(&mvm->time_event_lock);
2919
2920 return true;
2921 }
2922
2923 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 200
2924 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2925 struct ieee80211_channel *channel,
2926 struct ieee80211_vif *vif,
2927 int duration)
2928 {
2929 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2930 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2931 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2932 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2933 struct iwl_notification_wait wait_time_event;
2934 struct iwl_hs20_roc_req aux_roc_req = {
2935 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2936 .id_and_color =
2937 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2938 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2939 /* Set the channel info data */
2940 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2941 PHY_BAND_24 : PHY_BAND_5,
2942 .channel_info.channel = channel->hw_value,
2943 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2944 /* Set the time and duration */
2945 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2946 .apply_time_max_delay =
2947 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2948 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2949 };
2950
2951 /* Set the node address */
2952 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2953
2954 lockdep_assert_held(&mvm->mutex);
2955
2956 spin_lock_bh(&mvm->time_event_lock);
2957
2958 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2959 spin_unlock_bh(&mvm->time_event_lock);
2960 return -EIO;
2961 }
2962
2963 te_data->vif = vif;
2964 te_data->duration = duration;
2965 te_data->id = HOT_SPOT_CMD;
2966
2967 spin_unlock_bh(&mvm->time_event_lock);
2968
2969 /*
2970 * Use a notification wait, which really just processes the
2971 * command response and doesn't wait for anything, in order
2972 * to be able to process the response and get the UID inside
2973 * the RX path. Using CMD_WANT_SKB doesn't work because it
2974 * stores the buffer and then wakes up this thread, by which
2975 * time another notification (that the time event started)
2976 * might already be processed unsuccessfully.
2977 */
2978 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2979 time_event_response,
2980 ARRAY_SIZE(time_event_response),
2981 iwl_mvm_rx_aux_roc, te_data);
2982
2983 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2984 &aux_roc_req);
2985
2986 if (res) {
2987 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2988 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2989 goto out_clear_te;
2990 }
2991
2992 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2993 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2994 /* should never fail */
2995 WARN_ON_ONCE(res);
2996
2997 if (res) {
2998 out_clear_te:
2999 spin_lock_bh(&mvm->time_event_lock);
3000 iwl_mvm_te_clear_data(mvm, te_data);
3001 spin_unlock_bh(&mvm->time_event_lock);
3002 }
3003
3004 return res;
3005 }
3006
3007 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3008 struct ieee80211_vif *vif,
3009 struct ieee80211_channel *channel,
3010 int duration,
3011 enum ieee80211_roc_type type)
3012 {
3013 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3014 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3015 struct cfg80211_chan_def chandef;
3016 struct iwl_mvm_phy_ctxt *phy_ctxt;
3017 int ret, i;
3018
3019 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3020 duration, type);
3021
3022 flush_work(&mvm->roc_done_wk);
3023
3024 mutex_lock(&mvm->mutex);
3025
3026 switch (vif->type) {
3027 case NL80211_IFTYPE_STATION:
3028 if (mvm->fw->ucode_capa.capa[0] &
3029 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
3030 /* Use aux roc framework (HS20) */
3031 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3032 vif, duration);
3033 goto out_unlock;
3034 }
3035 IWL_ERR(mvm, "hotspot not supported\n");
3036 ret = -EINVAL;
3037 goto out_unlock;
3038 case NL80211_IFTYPE_P2P_DEVICE:
3039 /* handle below */
3040 break;
3041 default:
3042 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3043 ret = -EINVAL;
3044 goto out_unlock;
3045 }
3046
3047 for (i = 0; i < NUM_PHY_CTX; i++) {
3048 phy_ctxt = &mvm->phy_ctxts[i];
3049 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3050 continue;
3051
3052 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3053 /*
3054 * Unbind the P2P_DEVICE from the current PHY context,
3055 * and if the PHY context is not used remove it.
3056 */
3057 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3058 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3059 goto out_unlock;
3060
3061 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3062
3063 /* Bind the P2P_DEVICE to the current PHY Context */
3064 mvmvif->phy_ctxt = phy_ctxt;
3065
3066 ret = iwl_mvm_binding_add_vif(mvm, vif);
3067 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3068 goto out_unlock;
3069
3070 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3071 goto schedule_time_event;
3072 }
3073 }
3074
3075 /* Need to update the PHY context only if the ROC channel changed */
3076 if (channel == mvmvif->phy_ctxt->channel)
3077 goto schedule_time_event;
3078
3079 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3080
3081 /*
3082 * Change the PHY context configuration as it is currently referenced
3083 * only by the P2P Device MAC
3084 */
3085 if (mvmvif->phy_ctxt->ref == 1) {
3086 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3087 &chandef, 1, 1);
3088 if (ret)
3089 goto out_unlock;
3090 } else {
3091 /*
3092 * The PHY context is shared with other MACs. Need to remove the
3093 * P2P Device from the binding, allocate an new PHY context and
3094 * create a new binding
3095 */
3096 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3097 if (!phy_ctxt) {
3098 ret = -ENOSPC;
3099 goto out_unlock;
3100 }
3101
3102 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3103 1, 1);
3104 if (ret) {
3105 IWL_ERR(mvm, "Failed to change PHY context\n");
3106 goto out_unlock;
3107 }
3108
3109 /* Unbind the P2P_DEVICE from the current PHY context */
3110 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3111 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3112 goto out_unlock;
3113
3114 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3115
3116 /* Bind the P2P_DEVICE to the new allocated PHY context */
3117 mvmvif->phy_ctxt = phy_ctxt;
3118
3119 ret = iwl_mvm_binding_add_vif(mvm, vif);
3120 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3121 goto out_unlock;
3122
3123 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3124 }
3125
3126 schedule_time_event:
3127 /* Schedule the time events */
3128 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3129
3130 out_unlock:
3131 mutex_unlock(&mvm->mutex);
3132 IWL_DEBUG_MAC80211(mvm, "leave\n");
3133 return ret;
3134 }
3135
3136 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3137 {
3138 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3139
3140 IWL_DEBUG_MAC80211(mvm, "enter\n");
3141
3142 mutex_lock(&mvm->mutex);
3143 iwl_mvm_stop_roc(mvm);
3144 mutex_unlock(&mvm->mutex);
3145
3146 IWL_DEBUG_MAC80211(mvm, "leave\n");
3147 return 0;
3148 }
3149
3150 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3151 struct ieee80211_chanctx_conf *ctx)
3152 {
3153 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3154 struct iwl_mvm_phy_ctxt *phy_ctxt;
3155 int ret;
3156
3157 lockdep_assert_held(&mvm->mutex);
3158
3159 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3160
3161 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3162 if (!phy_ctxt) {
3163 ret = -ENOSPC;
3164 goto out;
3165 }
3166
3167 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3168 ctx->rx_chains_static,
3169 ctx->rx_chains_dynamic);
3170 if (ret) {
3171 IWL_ERR(mvm, "Failed to add PHY context\n");
3172 goto out;
3173 }
3174
3175 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3176 *phy_ctxt_id = phy_ctxt->id;
3177 out:
3178 return ret;
3179 }
3180
3181 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3182 struct ieee80211_chanctx_conf *ctx)
3183 {
3184 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3185 int ret;
3186
3187 mutex_lock(&mvm->mutex);
3188 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3189 mutex_unlock(&mvm->mutex);
3190
3191 return ret;
3192 }
3193
3194 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3195 struct ieee80211_chanctx_conf *ctx)
3196 {
3197 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3198 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3199
3200 lockdep_assert_held(&mvm->mutex);
3201
3202 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3203 }
3204
3205 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3206 struct ieee80211_chanctx_conf *ctx)
3207 {
3208 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3209
3210 mutex_lock(&mvm->mutex);
3211 __iwl_mvm_remove_chanctx(mvm, ctx);
3212 mutex_unlock(&mvm->mutex);
3213 }
3214
3215 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3216 struct ieee80211_chanctx_conf *ctx,
3217 u32 changed)
3218 {
3219 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3220 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3221 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3222
3223 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3224 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3225 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3226 IEEE80211_CHANCTX_CHANGE_RADAR |
3227 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3228 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3229 phy_ctxt->ref, changed))
3230 return;
3231
3232 mutex_lock(&mvm->mutex);
3233 iwl_mvm_bt_coex_vif_change(mvm);
3234 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3235 ctx->rx_chains_static,
3236 ctx->rx_chains_dynamic);
3237 mutex_unlock(&mvm->mutex);
3238 }
3239
3240 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3241 struct ieee80211_vif *vif,
3242 struct ieee80211_chanctx_conf *ctx,
3243 bool switching_chanctx)
3244 {
3245 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3246 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3247 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3248 int ret;
3249
3250 lockdep_assert_held(&mvm->mutex);
3251
3252 mvmvif->phy_ctxt = phy_ctxt;
3253
3254 switch (vif->type) {
3255 case NL80211_IFTYPE_AP:
3256 /* only needed if we're switching chanctx (i.e. during CSA) */
3257 if (switching_chanctx) {
3258 mvmvif->ap_ibss_active = true;
3259 break;
3260 }
3261 case NL80211_IFTYPE_ADHOC:
3262 /*
3263 * The AP binding flow is handled as part of the start_ap flow
3264 * (in bss_info_changed), similarly for IBSS.
3265 */
3266 ret = 0;
3267 goto out;
3268 case NL80211_IFTYPE_STATION:
3269 break;
3270 case NL80211_IFTYPE_MONITOR:
3271 /* always disable PS when a monitor interface is active */
3272 mvmvif->ps_disabled = true;
3273 break;
3274 default:
3275 ret = -EINVAL;
3276 goto out;
3277 }
3278
3279 ret = iwl_mvm_binding_add_vif(mvm, vif);
3280 if (ret)
3281 goto out;
3282
3283 /*
3284 * Power state must be updated before quotas,
3285 * otherwise fw will complain.
3286 */
3287 iwl_mvm_power_update_mac(mvm);
3288
3289 /* Setting the quota at this stage is only required for monitor
3290 * interfaces. For the other types, the bss_info changed flow
3291 * will handle quota settings.
3292 */
3293 if (vif->type == NL80211_IFTYPE_MONITOR) {
3294 mvmvif->monitor_active = true;
3295 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3296 if (ret)
3297 goto out_remove_binding;
3298 }
3299
3300 /* Handle binding during CSA */
3301 if (vif->type == NL80211_IFTYPE_AP) {
3302 iwl_mvm_update_quotas(mvm, false, NULL);
3303 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3304 }
3305
3306 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3307 u32 duration = 2 * vif->bss_conf.beacon_int;
3308
3309 /* iwl_mvm_protect_session() reads directly from the
3310 * device (the system time), so make sure it is
3311 * available.
3312 */
3313 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3314 if (ret)
3315 goto out_remove_binding;
3316
3317 /* Protect the session to make sure we hear the first
3318 * beacon on the new channel.
3319 */
3320 iwl_mvm_protect_session(mvm, vif, duration, duration,
3321 vif->bss_conf.beacon_int / 2,
3322 true);
3323
3324 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3325
3326 iwl_mvm_update_quotas(mvm, false, NULL);
3327 }
3328
3329 goto out;
3330
3331 out_remove_binding:
3332 iwl_mvm_binding_remove_vif(mvm, vif);
3333 iwl_mvm_power_update_mac(mvm);
3334 out:
3335 if (ret)
3336 mvmvif->phy_ctxt = NULL;
3337 return ret;
3338 }
3339 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3340 struct ieee80211_vif *vif,
3341 struct ieee80211_chanctx_conf *ctx)
3342 {
3343 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3344 int ret;
3345
3346 mutex_lock(&mvm->mutex);
3347 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3348 mutex_unlock(&mvm->mutex);
3349
3350 return ret;
3351 }
3352
3353 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3354 struct ieee80211_vif *vif,
3355 struct ieee80211_chanctx_conf *ctx,
3356 bool switching_chanctx)
3357 {
3358 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3359 struct ieee80211_vif *disabled_vif = NULL;
3360
3361 lockdep_assert_held(&mvm->mutex);
3362
3363 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3364
3365 switch (vif->type) {
3366 case NL80211_IFTYPE_ADHOC:
3367 goto out;
3368 case NL80211_IFTYPE_MONITOR:
3369 mvmvif->monitor_active = false;
3370 mvmvif->ps_disabled = false;
3371 break;
3372 case NL80211_IFTYPE_AP:
3373 /* This part is triggered only during CSA */
3374 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3375 goto out;
3376
3377 mvmvif->csa_countdown = false;
3378
3379 /* Set CS bit on all the stations */
3380 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3381
3382 /* Save blocked iface, the timeout is set on the next beacon */
3383 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3384
3385 mvmvif->ap_ibss_active = false;
3386 break;
3387 case NL80211_IFTYPE_STATION:
3388 if (!switching_chanctx)
3389 break;
3390
3391 disabled_vif = vif;
3392
3393 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3394 break;
3395 default:
3396 break;
3397 }
3398
3399 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3400 iwl_mvm_binding_remove_vif(mvm, vif);
3401
3402 out:
3403 mvmvif->phy_ctxt = NULL;
3404 iwl_mvm_power_update_mac(mvm);
3405 }
3406
3407 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3408 struct ieee80211_vif *vif,
3409 struct ieee80211_chanctx_conf *ctx)
3410 {
3411 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3412
3413 mutex_lock(&mvm->mutex);
3414 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3415 mutex_unlock(&mvm->mutex);
3416 }
3417
3418 static int
3419 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3420 struct ieee80211_vif_chanctx_switch *vifs)
3421 {
3422 int ret;
3423
3424 mutex_lock(&mvm->mutex);
3425 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3426 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3427
3428 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3429 if (ret) {
3430 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3431 goto out_reassign;
3432 }
3433
3434 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3435 true);
3436 if (ret) {
3437 IWL_ERR(mvm,
3438 "failed to assign new_ctx during channel switch\n");
3439 goto out_remove;
3440 }
3441
3442 /* we don't support TDLS during DCM - can be caused by channel switch */
3443 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3444 iwl_mvm_teardown_tdls_peers(mvm);
3445
3446 goto out;
3447
3448 out_remove:
3449 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3450
3451 out_reassign:
3452 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3453 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3454 goto out_restart;
3455 }
3456
3457 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3458 true)) {
3459 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3460 goto out_restart;
3461 }
3462
3463 goto out;
3464
3465 out_restart:
3466 /* things keep failing, better restart the hw */
3467 iwl_mvm_nic_restart(mvm, false);
3468
3469 out:
3470 mutex_unlock(&mvm->mutex);
3471
3472 return ret;
3473 }
3474
3475 static int
3476 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3477 struct ieee80211_vif_chanctx_switch *vifs)
3478 {
3479 int ret;
3480
3481 mutex_lock(&mvm->mutex);
3482 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3483
3484 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3485 true);
3486 if (ret) {
3487 IWL_ERR(mvm,
3488 "failed to assign new_ctx during channel switch\n");
3489 goto out_reassign;
3490 }
3491
3492 goto out;
3493
3494 out_reassign:
3495 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3496 true)) {
3497 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3498 goto out_restart;
3499 }
3500
3501 goto out;
3502
3503 out_restart:
3504 /* things keep failing, better restart the hw */
3505 iwl_mvm_nic_restart(mvm, false);
3506
3507 out:
3508 mutex_unlock(&mvm->mutex);
3509
3510 return ret;
3511 }
3512
3513 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3514 struct ieee80211_vif_chanctx_switch *vifs,
3515 int n_vifs,
3516 enum ieee80211_chanctx_switch_mode mode)
3517 {
3518 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3519 int ret;
3520
3521 /* we only support a single-vif right now */
3522 if (n_vifs > 1)
3523 return -EOPNOTSUPP;
3524
3525 switch (mode) {
3526 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3527 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3528 break;
3529 case CHANCTX_SWMODE_REASSIGN_VIF:
3530 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3531 break;
3532 default:
3533 ret = -EOPNOTSUPP;
3534 break;
3535 }
3536
3537 return ret;
3538 }
3539
3540 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3541 struct ieee80211_sta *sta,
3542 bool set)
3543 {
3544 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3545 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3546
3547 if (!mvm_sta || !mvm_sta->vif) {
3548 IWL_ERR(mvm, "Station is not associated to a vif\n");
3549 return -EINVAL;
3550 }
3551
3552 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3553 }
3554
3555 #ifdef CONFIG_NL80211_TESTMODE
3556 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3557 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3558 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3559 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3560 };
3561
3562 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3563 struct ieee80211_vif *vif,
3564 void *data, int len)
3565 {
3566 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3567 int err;
3568 u32 noa_duration;
3569
3570 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3571 if (err)
3572 return err;
3573
3574 if (!tb[IWL_MVM_TM_ATTR_CMD])
3575 return -EINVAL;
3576
3577 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3578 case IWL_MVM_TM_CMD_SET_NOA:
3579 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3580 !vif->bss_conf.enable_beacon ||
3581 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3582 return -EINVAL;
3583
3584 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3585 if (noa_duration >= vif->bss_conf.beacon_int)
3586 return -EINVAL;
3587
3588 mvm->noa_duration = noa_duration;
3589 mvm->noa_vif = vif;
3590
3591 return iwl_mvm_update_quotas(mvm, false, NULL);
3592 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3593 /* must be associated client vif - ignore authorized */
3594 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3595 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3596 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3597 return -EINVAL;
3598
3599 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3600 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3601 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3602 }
3603
3604 return -EOPNOTSUPP;
3605 }
3606
3607 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3608 struct ieee80211_vif *vif,
3609 void *data, int len)
3610 {
3611 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3612 int err;
3613
3614 mutex_lock(&mvm->mutex);
3615 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3616 mutex_unlock(&mvm->mutex);
3617
3618 return err;
3619 }
3620 #endif
3621
3622 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3623 struct ieee80211_vif *vif,
3624 struct ieee80211_channel_switch *chsw)
3625 {
3626 /* By implementing this operation, we prevent mac80211 from
3627 * starting its own channel switch timer, so that we can call
3628 * ieee80211_chswitch_done() ourselves at the right time
3629 * (which is when the absence time event starts).
3630 */
3631
3632 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3633 "dummy channel switch op\n");
3634 }
3635
3636 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3637 struct ieee80211_vif *vif,
3638 struct ieee80211_channel_switch *chsw)
3639 {
3640 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3641 struct ieee80211_vif *csa_vif;
3642 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3643 u32 apply_time;
3644 int ret;
3645
3646 mutex_lock(&mvm->mutex);
3647
3648 mvmvif->csa_failed = false;
3649
3650 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3651 chsw->chandef.center_freq1);
3652
3653 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3654
3655 switch (vif->type) {
3656 case NL80211_IFTYPE_AP:
3657 csa_vif =
3658 rcu_dereference_protected(mvm->csa_vif,
3659 lockdep_is_held(&mvm->mutex));
3660 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3661 "Another CSA is already in progress")) {
3662 ret = -EBUSY;
3663 goto out_unlock;
3664 }
3665
3666 rcu_assign_pointer(mvm->csa_vif, vif);
3667
3668 if (WARN_ONCE(mvmvif->csa_countdown,
3669 "Previous CSA countdown didn't complete")) {
3670 ret = -EBUSY;
3671 goto out_unlock;
3672 }
3673
3674 break;
3675 case NL80211_IFTYPE_STATION:
3676 /* Schedule the time event to a bit before beacon 1,
3677 * to make sure we're in the new channel when the
3678 * GO/AP arrives.
3679 */
3680 apply_time = chsw->device_timestamp +
3681 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3682 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3683
3684 if (chsw->block_tx)
3685 iwl_mvm_csa_client_absent(mvm, vif);
3686
3687 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3688 apply_time);
3689 if (mvmvif->bf_data.bf_enabled) {
3690 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3691 if (ret)
3692 goto out_unlock;
3693 }
3694
3695 break;
3696 default:
3697 break;
3698 }
3699
3700 mvmvif->ps_disabled = true;
3701
3702 ret = iwl_mvm_power_update_ps(mvm);
3703 if (ret)
3704 goto out_unlock;
3705
3706 /* we won't be on this channel any longer */
3707 iwl_mvm_teardown_tdls_peers(mvm);
3708
3709 out_unlock:
3710 mutex_unlock(&mvm->mutex);
3711
3712 return ret;
3713 }
3714
3715 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3716 struct ieee80211_vif *vif)
3717 {
3718 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3719 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3720 int ret;
3721
3722 mutex_lock(&mvm->mutex);
3723
3724 if (mvmvif->csa_failed) {
3725 mvmvif->csa_failed = false;
3726 ret = -EIO;
3727 goto out_unlock;
3728 }
3729
3730 if (vif->type == NL80211_IFTYPE_STATION) {
3731 struct iwl_mvm_sta *mvmsta;
3732
3733 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3734 mvmvif->ap_sta_id);
3735
3736 if (WARN_ON(!mvmsta)) {
3737 ret = -EIO;
3738 goto out_unlock;
3739 }
3740
3741 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3742
3743 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3744
3745 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3746 if (ret)
3747 goto out_unlock;
3748
3749 iwl_mvm_stop_session_protection(mvm, vif);
3750 }
3751
3752 mvmvif->ps_disabled = false;
3753
3754 ret = iwl_mvm_power_update_ps(mvm);
3755
3756 out_unlock:
3757 mutex_unlock(&mvm->mutex);
3758
3759 return ret;
3760 }
3761
3762 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3763 struct ieee80211_vif *vif, u32 queues, bool drop)
3764 {
3765 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3766 struct iwl_mvm_vif *mvmvif;
3767 struct iwl_mvm_sta *mvmsta;
3768 struct ieee80211_sta *sta;
3769 int i;
3770 u32 msk = 0;
3771
3772 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3773 return;
3774
3775 mutex_lock(&mvm->mutex);
3776 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3777
3778 /* flush the AP-station and all TDLS peers */
3779 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3780 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3781 lockdep_is_held(&mvm->mutex));
3782 if (IS_ERR_OR_NULL(sta))
3783 continue;
3784
3785 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3786 if (mvmsta->vif != vif)
3787 continue;
3788
3789 /* make sure only TDLS peers or the AP are flushed */
3790 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3791
3792 msk |= mvmsta->tfd_queue_msk;
3793 }
3794
3795 if (drop) {
3796 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3797 IWL_ERR(mvm, "flush request fail\n");
3798 mutex_unlock(&mvm->mutex);
3799 } else {
3800 mutex_unlock(&mvm->mutex);
3801
3802 /* this can take a while, and we may need/want other operations
3803 * to succeed while doing this, so do it without the mutex held
3804 */
3805 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3806 }
3807 }
3808
3809 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3810 struct survey_info *survey)
3811 {
3812 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3813 int ret;
3814
3815 memset(survey, 0, sizeof(*survey));
3816
3817 /* only support global statistics right now */
3818 if (idx != 0)
3819 return -ENOENT;
3820
3821 if (!(mvm->fw->ucode_capa.capa[0] &
3822 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3823 return -ENOENT;
3824
3825 mutex_lock(&mvm->mutex);
3826
3827 if (mvm->ucode_loaded) {
3828 ret = iwl_mvm_request_statistics(mvm, false);
3829 if (ret)
3830 goto out;
3831 }
3832
3833 survey->filled = SURVEY_INFO_TIME |
3834 SURVEY_INFO_TIME_RX |
3835 SURVEY_INFO_TIME_TX |
3836 SURVEY_INFO_TIME_SCAN;
3837 survey->time = mvm->accu_radio_stats.on_time_rf +
3838 mvm->radio_stats.on_time_rf;
3839 do_div(survey->time, USEC_PER_MSEC);
3840
3841 survey->time_rx = mvm->accu_radio_stats.rx_time +
3842 mvm->radio_stats.rx_time;
3843 do_div(survey->time_rx, USEC_PER_MSEC);
3844
3845 survey->time_tx = mvm->accu_radio_stats.tx_time +
3846 mvm->radio_stats.tx_time;
3847 do_div(survey->time_tx, USEC_PER_MSEC);
3848
3849 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3850 mvm->radio_stats.on_time_scan;
3851 do_div(survey->time_scan, USEC_PER_MSEC);
3852
3853 ret = 0;
3854 out:
3855 mutex_unlock(&mvm->mutex);
3856 return ret;
3857 }
3858
3859 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3860 struct ieee80211_vif *vif,
3861 struct ieee80211_sta *sta,
3862 struct station_info *sinfo)
3863 {
3864 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3865 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3866 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3867
3868 if (!(mvm->fw->ucode_capa.capa[0] &
3869 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3870 return;
3871
3872 /* if beacon filtering isn't on mac80211 does it anyway */
3873 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3874 return;
3875
3876 if (!vif->bss_conf.assoc)
3877 return;
3878
3879 mutex_lock(&mvm->mutex);
3880
3881 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3882 goto unlock;
3883
3884 if (iwl_mvm_request_statistics(mvm, false))
3885 goto unlock;
3886
3887 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3888 mvmvif->beacon_stats.accu_num_beacons;
3889 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3890 if (mvmvif->beacon_stats.avg_signal) {
3891 /* firmware only reports a value after RXing a few beacons */
3892 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3893 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3894 }
3895 unlock:
3896 mutex_unlock(&mvm->mutex);
3897 }
3898
3899 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3900 struct ieee80211_vif *vif,
3901 const struct ieee80211_event *event)
3902 {
3903 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
3904 do { \
3905 if ((_cnt) && --(_cnt)) \
3906 break; \
3907 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3908 } while (0)
3909
3910 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3911 struct iwl_fw_dbg_trigger_tlv *trig;
3912 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3913
3914 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3915 return;
3916
3917 if (event->u.mlme.status == MLME_SUCCESS)
3918 return;
3919
3920 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3921 trig_mlme = (void *)trig->data;
3922 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3923 return;
3924
3925 if (event->u.mlme.data == ASSOC_EVENT) {
3926 if (event->u.mlme.status == MLME_DENIED)
3927 CHECK_MLME_TRIGGER(mvm, trig, buf,
3928 trig_mlme->stop_assoc_denied,
3929 "DENIED ASSOC: reason %d",
3930 event->u.mlme.reason);
3931 else if (event->u.mlme.status == MLME_TIMEOUT)
3932 CHECK_MLME_TRIGGER(mvm, trig, buf,
3933 trig_mlme->stop_assoc_timeout,
3934 "ASSOC TIMEOUT");
3935 } else if (event->u.mlme.data == AUTH_EVENT) {
3936 if (event->u.mlme.status == MLME_DENIED)
3937 CHECK_MLME_TRIGGER(mvm, trig, buf,
3938 trig_mlme->stop_auth_denied,
3939 "DENIED AUTH: reason %d",
3940 event->u.mlme.reason);
3941 else if (event->u.mlme.status == MLME_TIMEOUT)
3942 CHECK_MLME_TRIGGER(mvm, trig, buf,
3943 trig_mlme->stop_auth_timeout,
3944 "AUTH TIMEOUT");
3945 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3946 CHECK_MLME_TRIGGER(mvm, trig, buf,
3947 trig_mlme->stop_rx_deauth,
3948 "DEAUTH RX %d", event->u.mlme.reason);
3949 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3950 CHECK_MLME_TRIGGER(mvm, trig, buf,
3951 trig_mlme->stop_tx_deauth,
3952 "DEAUTH TX %d", event->u.mlme.reason);
3953 }
3954 #undef CHECK_MLME_TRIGGER
3955 }
3956
3957 const struct ieee80211_ops iwl_mvm_hw_ops = {
3958 .tx = iwl_mvm_mac_tx,
3959 .ampdu_action = iwl_mvm_mac_ampdu_action,
3960 .start = iwl_mvm_mac_start,
3961 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3962 .stop = iwl_mvm_mac_stop,
3963 .add_interface = iwl_mvm_mac_add_interface,
3964 .remove_interface = iwl_mvm_mac_remove_interface,
3965 .config = iwl_mvm_mac_config,
3966 .prepare_multicast = iwl_mvm_prepare_multicast,
3967 .configure_filter = iwl_mvm_configure_filter,
3968 .bss_info_changed = iwl_mvm_bss_info_changed,
3969 .hw_scan = iwl_mvm_mac_hw_scan,
3970 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3971 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3972 .sta_state = iwl_mvm_mac_sta_state,
3973 .sta_notify = iwl_mvm_mac_sta_notify,
3974 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3975 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3976 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3977 .sta_rc_update = iwl_mvm_sta_rc_update,
3978 .conf_tx = iwl_mvm_mac_conf_tx,
3979 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3980 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3981 .flush = iwl_mvm_mac_flush,
3982 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3983 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3984 .set_key = iwl_mvm_mac_set_key,
3985 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3986 .remain_on_channel = iwl_mvm_roc,
3987 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3988 .add_chanctx = iwl_mvm_add_chanctx,
3989 .remove_chanctx = iwl_mvm_remove_chanctx,
3990 .change_chanctx = iwl_mvm_change_chanctx,
3991 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3992 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3993 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3994
3995 .start_ap = iwl_mvm_start_ap_ibss,
3996 .stop_ap = iwl_mvm_stop_ap_ibss,
3997 .join_ibss = iwl_mvm_start_ap_ibss,
3998 .leave_ibss = iwl_mvm_stop_ap_ibss,
3999
4000 .set_tim = iwl_mvm_set_tim,
4001
4002 .channel_switch = iwl_mvm_channel_switch,
4003 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4004 .post_channel_switch = iwl_mvm_post_channel_switch,
4005
4006 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4007 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4008 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4009
4010 .event_callback = iwl_mvm_mac_event_callback,
4011
4012 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4013
4014 #ifdef CONFIG_PM_SLEEP
4015 /* look at d3.c */
4016 .suspend = iwl_mvm_suspend,
4017 .resume = iwl_mvm_resume,
4018 .set_wakeup = iwl_mvm_set_wakeup,
4019 .set_rekey_data = iwl_mvm_set_rekey_data,
4020 #if IS_ENABLED(CONFIG_IPV6)
4021 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4022 #endif
4023 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4024 #endif
4025 .get_survey = iwl_mvm_mac_get_survey,
4026 .sta_statistics = iwl_mvm_mac_sta_statistics,
4027 };
Linux kernel - Deliverables
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