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iwlwifi: mvm: enable TCP/UDP checksum support for 9000 family
[mirror_ubuntu-hirsute-kernel.git] / drivers / net / wireless / intel / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * USA
25 *
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
28 *
29 * Contact Information:
30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32 *
33 * BSD LICENSE
34 *
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
37 * All rights reserved.
38 *
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
41 * are met:
42 *
43 * * Redistributions of source code must retain the above copyright
44 * notice, this list of conditions and the following disclaimer.
45 * * Redistributions in binary form must reproduce the above copyright
46 * notice, this list of conditions and the following disclaimer in
47 * the documentation and/or other materials provided with the
48 * distribution.
49 * * Neither the name Intel Corporation nor the names of its
50 * contributors may be used to endorse or promote products derived
51 * from this software without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
54 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
55 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
56 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
57 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
58 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
59 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
63 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *
65 *****************************************************************************/
66 #include <linux/kernel.h>
67 #include <linux/slab.h>
68 #include <linux/skbuff.h>
69 #include <linux/netdevice.h>
70 #include <linux/etherdevice.h>
71 #include <linux/ip.h>
72 #include <linux/if_arp.h>
73 #include <linux/time.h>
74 #include <net/mac80211.h>
75 #include <net/ieee80211_radiotap.h>
76 #include <net/tcp.h>
77
78 #include "iwl-op-mode.h"
79 #include "iwl-io.h"
80 #include "mvm.h"
81 #include "sta.h"
82 #include "time-event.h"
83 #include "iwl-eeprom-parse.h"
84 #include "iwl-phy-db.h"
85 #include "testmode.h"
86 #include "iwl-fw-error-dump.h"
87 #include "iwl-prph.h"
88 #include "iwl-nvm-parse.h"
89 #include "fw-dbg.h"
90
91 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
92 {
93 .max = 1,
94 .types = BIT(NL80211_IFTYPE_STATION),
95 },
96 {
97 .max = 1,
98 .types = BIT(NL80211_IFTYPE_AP) |
99 BIT(NL80211_IFTYPE_P2P_CLIENT) |
100 BIT(NL80211_IFTYPE_P2P_GO),
101 },
102 {
103 .max = 1,
104 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
105 },
106 };
107
108 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
109 {
110 .num_different_channels = 2,
111 .max_interfaces = 3,
112 .limits = iwl_mvm_limits,
113 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
114 },
115 };
116
117 #ifdef CONFIG_PM_SLEEP
118 static const struct nl80211_wowlan_tcp_data_token_feature
119 iwl_mvm_wowlan_tcp_token_feature = {
120 .min_len = 0,
121 .max_len = 255,
122 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
123 };
124
125 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
126 .tok = &iwl_mvm_wowlan_tcp_token_feature,
127 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
128 sizeof(struct ethhdr) -
129 sizeof(struct iphdr) -
130 sizeof(struct tcphdr),
131 .data_interval_max = 65535, /* __le16 in API */
132 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
133 sizeof(struct ethhdr) -
134 sizeof(struct iphdr) -
135 sizeof(struct tcphdr),
136 .seq = true,
137 };
138 #endif
139
140 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
141 /*
142 * Use the reserved field to indicate magic values.
143 * these values will only be used internally by the driver,
144 * and won't make it to the fw (reserved will be 0).
145 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
146 * be the vif's ip address. in case there is not a single
147 * ip address (0, or more than 1), this attribute will
148 * be skipped.
149 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
150 * the LSB bytes of the vif's mac address
151 */
152 enum {
153 BC_FILTER_MAGIC_NONE = 0,
154 BC_FILTER_MAGIC_IP,
155 BC_FILTER_MAGIC_MAC,
156 };
157
158 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
159 {
160 /* arp */
161 .discard = 0,
162 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
163 .attrs = {
164 {
165 /* frame type - arp, hw type - ethernet */
166 .offset_type =
167 BCAST_FILTER_OFFSET_PAYLOAD_START,
168 .offset = sizeof(rfc1042_header),
169 .val = cpu_to_be32(0x08060001),
170 .mask = cpu_to_be32(0xffffffff),
171 },
172 {
173 /* arp dest ip */
174 .offset_type =
175 BCAST_FILTER_OFFSET_PAYLOAD_START,
176 .offset = sizeof(rfc1042_header) + 2 +
177 sizeof(struct arphdr) +
178 ETH_ALEN + sizeof(__be32) +
179 ETH_ALEN,
180 .mask = cpu_to_be32(0xffffffff),
181 /* mark it as special field */
182 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
183 },
184 },
185 },
186 {
187 /* dhcp offer bcast */
188 .discard = 0,
189 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
190 .attrs = {
191 {
192 /* udp dest port - 68 (bootp client)*/
193 .offset_type = BCAST_FILTER_OFFSET_IP_END,
194 .offset = offsetof(struct udphdr, dest),
195 .val = cpu_to_be32(0x00440000),
196 .mask = cpu_to_be32(0xffff0000),
197 },
198 {
199 /* dhcp - lsb bytes of client hw address */
200 .offset_type = BCAST_FILTER_OFFSET_IP_END,
201 .offset = 38,
202 .mask = cpu_to_be32(0xffffffff),
203 /* mark it as special field */
204 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
205 },
206 },
207 },
208 /* last filter must be empty */
209 {},
210 };
211 #endif
212
213 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
214 {
215 if (!iwl_mvm_is_d0i3_supported(mvm))
216 return;
217
218 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
219 spin_lock_bh(&mvm->refs_lock);
220 mvm->refs[ref_type]++;
221 spin_unlock_bh(&mvm->refs_lock);
222 iwl_trans_ref(mvm->trans);
223 }
224
225 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
226 {
227 if (!iwl_mvm_is_d0i3_supported(mvm))
228 return;
229
230 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
231 spin_lock_bh(&mvm->refs_lock);
232 WARN_ON(!mvm->refs[ref_type]--);
233 spin_unlock_bh(&mvm->refs_lock);
234 iwl_trans_unref(mvm->trans);
235 }
236
237 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
238 enum iwl_mvm_ref_type except_ref)
239 {
240 int i, j;
241
242 if (!iwl_mvm_is_d0i3_supported(mvm))
243 return;
244
245 spin_lock_bh(&mvm->refs_lock);
246 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
247 if (except_ref == i || !mvm->refs[i])
248 continue;
249
250 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
251 i, mvm->refs[i]);
252 for (j = 0; j < mvm->refs[i]; j++)
253 iwl_trans_unref(mvm->trans);
254 mvm->refs[i] = 0;
255 }
256 spin_unlock_bh(&mvm->refs_lock);
257 }
258
259 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
260 {
261 int i;
262 bool taken = false;
263
264 if (!iwl_mvm_is_d0i3_supported(mvm))
265 return true;
266
267 spin_lock_bh(&mvm->refs_lock);
268 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
269 if (mvm->refs[i]) {
270 taken = true;
271 break;
272 }
273 }
274 spin_unlock_bh(&mvm->refs_lock);
275
276 return taken;
277 }
278
279 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
280 {
281 iwl_mvm_ref(mvm, ref_type);
282
283 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
284 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
285 HZ)) {
286 WARN_ON_ONCE(1);
287 iwl_mvm_unref(mvm, ref_type);
288 return -EIO;
289 }
290
291 return 0;
292 }
293
294 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
295 {
296 int i;
297
298 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
299 for (i = 0; i < NUM_PHY_CTX; i++) {
300 mvm->phy_ctxts[i].id = i;
301 mvm->phy_ctxts[i].ref = 0;
302 }
303 }
304
305 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
306 const char *alpha2,
307 enum iwl_mcc_source src_id,
308 bool *changed)
309 {
310 struct ieee80211_regdomain *regd = NULL;
311 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
312 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
313 struct iwl_mcc_update_resp *resp;
314
315 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
316
317 lockdep_assert_held(&mvm->mutex);
318
319 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
320 if (IS_ERR_OR_NULL(resp)) {
321 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
322 PTR_ERR_OR_ZERO(resp));
323 goto out;
324 }
325
326 if (changed)
327 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
328
329 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
330 __le32_to_cpu(resp->n_channels),
331 resp->channels,
332 __le16_to_cpu(resp->mcc));
333 /* Store the return source id */
334 src_id = resp->source_id;
335 kfree(resp);
336 if (IS_ERR_OR_NULL(regd)) {
337 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
338 PTR_ERR_OR_ZERO(regd));
339 goto out;
340 }
341
342 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
343 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
344 mvm->lar_regdom_set = true;
345 mvm->mcc_src = src_id;
346
347 out:
348 return regd;
349 }
350
351 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
352 {
353 bool changed;
354 struct ieee80211_regdomain *regd;
355
356 if (!iwl_mvm_is_lar_supported(mvm))
357 return;
358
359 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
360 if (!IS_ERR_OR_NULL(regd)) {
361 /* only update the regulatory core if changed */
362 if (changed)
363 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
364
365 kfree(regd);
366 }
367 }
368
369 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
370 bool *changed)
371 {
372 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
373 iwl_mvm_is_wifi_mcc_supported(mvm) ?
374 MCC_SOURCE_GET_CURRENT :
375 MCC_SOURCE_OLD_FW, changed);
376 }
377
378 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
379 {
380 enum iwl_mcc_source used_src;
381 struct ieee80211_regdomain *regd;
382 int ret;
383 bool changed;
384 const struct ieee80211_regdomain *r =
385 rtnl_dereference(mvm->hw->wiphy->regd);
386
387 if (!r)
388 return -ENOENT;
389
390 /* save the last source in case we overwrite it below */
391 used_src = mvm->mcc_src;
392 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
393 /* Notify the firmware we support wifi location updates */
394 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
395 if (!IS_ERR_OR_NULL(regd))
396 kfree(regd);
397 }
398
399 /* Now set our last stored MCC and source */
400 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
401 &changed);
402 if (IS_ERR_OR_NULL(regd))
403 return -EIO;
404
405 /* update cfg80211 if the regdomain was changed */
406 if (changed)
407 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
408 else
409 ret = 0;
410
411 kfree(regd);
412 return ret;
413 }
414
415 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
416 {
417 struct ieee80211_hw *hw = mvm->hw;
418 int num_mac, ret, i;
419 static const u32 mvm_ciphers[] = {
420 WLAN_CIPHER_SUITE_WEP40,
421 WLAN_CIPHER_SUITE_WEP104,
422 WLAN_CIPHER_SUITE_TKIP,
423 WLAN_CIPHER_SUITE_CCMP,
424 };
425
426 /* Tell mac80211 our characteristics */
427 ieee80211_hw_set(hw, SIGNAL_DBM);
428 ieee80211_hw_set(hw, SPECTRUM_MGMT);
429 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
430 ieee80211_hw_set(hw, QUEUE_CONTROL);
431 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
432 ieee80211_hw_set(hw, SUPPORTS_PS);
433 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
434 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
435 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
436 ieee80211_hw_set(hw, CONNECTION_MONITOR);
437 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
438 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
439 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
440 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
441 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
442
443 if (mvm->trans->max_skb_frags)
444 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
445
446 hw->queues = mvm->first_agg_queue;
447 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
448 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
449 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
450 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
451 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
452 hw->rate_control_algorithm = "iwl-mvm-rs";
453 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
454 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
455
456 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2);
457 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
458 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
459 hw->wiphy->cipher_suites = mvm->ciphers;
460
461 /*
462 * Enable 11w if advertised by firmware and software crypto
463 * is not enabled (as the firmware will interpret some mgmt
464 * packets, so enabling it with software crypto isn't safe)
465 */
466 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
467 !iwlwifi_mod_params.sw_crypto) {
468 ieee80211_hw_set(hw, MFP_CAPABLE);
469 mvm->ciphers[hw->wiphy->n_cipher_suites] =
470 WLAN_CIPHER_SUITE_AES_CMAC;
471 hw->wiphy->n_cipher_suites++;
472 }
473
474 /* currently FW API supports only one optional cipher scheme */
475 if (mvm->fw->cs[0].cipher) {
476 mvm->hw->n_cipher_schemes = 1;
477 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
478 mvm->ciphers[hw->wiphy->n_cipher_suites] =
479 mvm->fw->cs[0].cipher;
480 hw->wiphy->n_cipher_suites++;
481 }
482
483 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
484 hw->wiphy->features |=
485 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
486 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
487 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
488
489 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
490 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
491 hw->chanctx_data_size = sizeof(u16);
492
493 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
494 BIT(NL80211_IFTYPE_P2P_CLIENT) |
495 BIT(NL80211_IFTYPE_AP) |
496 BIT(NL80211_IFTYPE_P2P_GO) |
497 BIT(NL80211_IFTYPE_P2P_DEVICE) |
498 BIT(NL80211_IFTYPE_ADHOC);
499
500 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
501 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
502 if (iwl_mvm_is_lar_supported(mvm))
503 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
504 else
505 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
506 REGULATORY_DISABLE_BEACON_HINTS;
507
508 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
509 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
510
511 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
512
513 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
514 hw->wiphy->n_iface_combinations =
515 ARRAY_SIZE(iwl_mvm_iface_combinations);
516
517 hw->wiphy->max_remain_on_channel_duration = 10000;
518 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
519 /* we can compensate an offset of up to 3 channels = 15 MHz */
520 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
521
522 /* Extract MAC address */
523 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
524 hw->wiphy->addresses = mvm->addresses;
525 hw->wiphy->n_addresses = 1;
526
527 /* Extract additional MAC addresses if available */
528 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
529 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
530
531 for (i = 1; i < num_mac; i++) {
532 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
533 ETH_ALEN);
534 mvm->addresses[i].addr[5]++;
535 hw->wiphy->n_addresses++;
536 }
537
538 iwl_mvm_reset_phy_ctxts(mvm);
539
540 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
541
542 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
543
544 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
545 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
546 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
547
548 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
549 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
550 else
551 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
552
553 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
554 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
555 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
556 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
557 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
558 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
559
560 if (fw_has_capa(&mvm->fw->ucode_capa,
561 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
562 fw_has_api(&mvm->fw->ucode_capa,
563 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
564 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
565 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
566 }
567
568 hw->wiphy->hw_version = mvm->trans->hw_id;
569
570 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
571 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
572 else
573 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
574
575 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
576 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
577 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
578 /* we create the 802.11 header and zero length SSID IE. */
579 hw->wiphy->max_sched_scan_ie_len =
580 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
581 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
582 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
583
584 /*
585 * the firmware uses u8 for num of iterations, but 0xff is saved for
586 * infinite loop, so the maximum number of iterations is actually 254.
587 */
588 hw->wiphy->max_sched_scan_plan_iterations = 254;
589
590 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
591 NL80211_FEATURE_LOW_PRIORITY_SCAN |
592 NL80211_FEATURE_P2P_GO_OPPPS |
593 NL80211_FEATURE_DYNAMIC_SMPS |
594 NL80211_FEATURE_STATIC_SMPS |
595 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
596
597 if (fw_has_capa(&mvm->fw->ucode_capa,
598 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
599 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
600 if (fw_has_capa(&mvm->fw->ucode_capa,
601 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
602 hw->wiphy->features |= NL80211_FEATURE_QUIET;
603
604 if (fw_has_capa(&mvm->fw->ucode_capa,
605 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
606 hw->wiphy->features |=
607 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
608
609 if (fw_has_capa(&mvm->fw->ucode_capa,
610 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
611 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
612
613 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
614
615 #ifdef CONFIG_PM_SLEEP
616 if (iwl_mvm_is_d0i3_supported(mvm) &&
617 device_can_wakeup(mvm->trans->dev)) {
618 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
619 hw->wiphy->wowlan = &mvm->wowlan;
620 }
621
622 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
623 mvm->trans->ops->d3_suspend &&
624 mvm->trans->ops->d3_resume &&
625 device_can_wakeup(mvm->trans->dev)) {
626 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
627 WIPHY_WOWLAN_DISCONNECT |
628 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
629 WIPHY_WOWLAN_RFKILL_RELEASE |
630 WIPHY_WOWLAN_NET_DETECT;
631 if (!iwlwifi_mod_params.sw_crypto)
632 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
633 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
634 WIPHY_WOWLAN_4WAY_HANDSHAKE;
635
636 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
637 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
638 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
639 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
640 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
641 hw->wiphy->wowlan = &mvm->wowlan;
642 }
643 #endif
644
645 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
646 /* assign default bcast filtering configuration */
647 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
648 #endif
649
650 ret = iwl_mvm_leds_init(mvm);
651 if (ret)
652 return ret;
653
654 if (fw_has_capa(&mvm->fw->ucode_capa,
655 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
656 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
657 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
658 ieee80211_hw_set(hw, TDLS_WIDER_BW);
659 }
660
661 if (fw_has_capa(&mvm->fw->ucode_capa,
662 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
663 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
664 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
665 }
666
667 hw->netdev_features |= mvm->cfg->features;
668 if (!iwl_mvm_is_csum_supported(mvm)) {
669 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
670 NETIF_F_RXCSUM);
671 /* We may support SW TX CSUM */
672 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
673 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
674 }
675
676 ret = ieee80211_register_hw(mvm->hw);
677 if (ret)
678 iwl_mvm_leds_exit(mvm);
679
680 return ret;
681 }
682
683 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
684 struct ieee80211_sta *sta,
685 struct sk_buff *skb)
686 {
687 struct iwl_mvm_sta *mvmsta;
688 bool defer = false;
689
690 /*
691 * double check the IN_D0I3 flag both before and after
692 * taking the spinlock, in order to prevent taking
693 * the spinlock when not needed.
694 */
695 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
696 return false;
697
698 spin_lock(&mvm->d0i3_tx_lock);
699 /*
700 * testing the flag again ensures the skb dequeue
701 * loop (on d0i3 exit) hasn't run yet.
702 */
703 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
704 goto out;
705
706 mvmsta = iwl_mvm_sta_from_mac80211(sta);
707 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
708 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
709 goto out;
710
711 __skb_queue_tail(&mvm->d0i3_tx, skb);
712 ieee80211_stop_queues(mvm->hw);
713
714 /* trigger wakeup */
715 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
716 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
717
718 defer = true;
719 out:
720 spin_unlock(&mvm->d0i3_tx_lock);
721 return defer;
722 }
723
724 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
725 struct ieee80211_tx_control *control,
726 struct sk_buff *skb)
727 {
728 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
729 struct ieee80211_sta *sta = control->sta;
730 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
731 struct ieee80211_hdr *hdr = (void *)skb->data;
732
733 if (iwl_mvm_is_radio_killed(mvm)) {
734 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
735 goto drop;
736 }
737
738 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
739 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
740 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
741 goto drop;
742
743 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
744 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
745 ieee80211_is_mgmt(hdr->frame_control) &&
746 !ieee80211_is_deauth(hdr->frame_control) &&
747 !ieee80211_is_disassoc(hdr->frame_control) &&
748 !ieee80211_is_action(hdr->frame_control)))
749 sta = NULL;
750
751 if (sta) {
752 if (iwl_mvm_defer_tx(mvm, sta, skb))
753 return;
754 if (iwl_mvm_tx_skb(mvm, skb, sta))
755 goto drop;
756 return;
757 }
758
759 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
760 goto drop;
761 return;
762 drop:
763 ieee80211_free_txskb(hw, skb);
764 }
765
766 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
767 {
768 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
769 return false;
770 return true;
771 }
772
773 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
774 {
775 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
776 return false;
777 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
778 return true;
779
780 /* enabled by default */
781 return true;
782 }
783
784 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
785 do { \
786 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
787 break; \
788 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
789 } while (0)
790
791 static void
792 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
793 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
794 enum ieee80211_ampdu_mlme_action action)
795 {
796 struct iwl_fw_dbg_trigger_tlv *trig;
797 struct iwl_fw_dbg_trigger_ba *ba_trig;
798
799 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
800 return;
801
802 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
803 ba_trig = (void *)trig->data;
804
805 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
806 return;
807
808 switch (action) {
809 case IEEE80211_AMPDU_TX_OPERATIONAL: {
810 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
811 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
812
813 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
814 "TX AGG START: MAC %pM tid %d ssn %d\n",
815 sta->addr, tid, tid_data->ssn);
816 break;
817 }
818 case IEEE80211_AMPDU_TX_STOP_CONT:
819 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
820 "TX AGG STOP: MAC %pM tid %d\n",
821 sta->addr, tid);
822 break;
823 case IEEE80211_AMPDU_RX_START:
824 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
825 "RX AGG START: MAC %pM tid %d ssn %d\n",
826 sta->addr, tid, rx_ba_ssn);
827 break;
828 case IEEE80211_AMPDU_RX_STOP:
829 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
830 "RX AGG STOP: MAC %pM tid %d\n",
831 sta->addr, tid);
832 break;
833 default:
834 break;
835 }
836 }
837
838 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
839 struct ieee80211_vif *vif,
840 struct ieee80211_ampdu_params *params)
841 {
842 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
843 int ret;
844 bool tx_agg_ref = false;
845 struct ieee80211_sta *sta = params->sta;
846 enum ieee80211_ampdu_mlme_action action = params->action;
847 u16 tid = params->tid;
848 u16 *ssn = &params->ssn;
849 u8 buf_size = params->buf_size;
850 bool amsdu = params->amsdu;
851
852 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
853 sta->addr, tid, action);
854
855 if (!(mvm->nvm_data->sku_cap_11n_enable))
856 return -EACCES;
857
858 /* return from D0i3 before starting a new Tx aggregation */
859 switch (action) {
860 case IEEE80211_AMPDU_TX_START:
861 case IEEE80211_AMPDU_TX_STOP_CONT:
862 case IEEE80211_AMPDU_TX_STOP_FLUSH:
863 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
864 case IEEE80211_AMPDU_TX_OPERATIONAL:
865 /*
866 * for tx start, wait synchronously until D0i3 exit to
867 * get the correct sequence number for the tid.
868 * additionally, some other ampdu actions use direct
869 * target access, which is not handled automatically
870 * by the trans layer (unlike commands), so wait for
871 * d0i3 exit in these cases as well.
872 */
873 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
874 if (ret)
875 return ret;
876
877 tx_agg_ref = true;
878 break;
879 default:
880 break;
881 }
882
883 mutex_lock(&mvm->mutex);
884
885 switch (action) {
886 case IEEE80211_AMPDU_RX_START:
887 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
888 ret = -EINVAL;
889 break;
890 }
891 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size);
892 break;
893 case IEEE80211_AMPDU_RX_STOP:
894 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size);
895 break;
896 case IEEE80211_AMPDU_TX_START:
897 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
898 ret = -EINVAL;
899 break;
900 }
901 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
902 break;
903 case IEEE80211_AMPDU_TX_STOP_CONT:
904 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
905 break;
906 case IEEE80211_AMPDU_TX_STOP_FLUSH:
907 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
908 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
909 break;
910 case IEEE80211_AMPDU_TX_OPERATIONAL:
911 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
912 buf_size, amsdu);
913 break;
914 default:
915 WARN_ON_ONCE(1);
916 ret = -EINVAL;
917 break;
918 }
919
920 if (!ret) {
921 u16 rx_ba_ssn = 0;
922
923 if (action == IEEE80211_AMPDU_RX_START)
924 rx_ba_ssn = *ssn;
925
926 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
927 rx_ba_ssn, action);
928 }
929 mutex_unlock(&mvm->mutex);
930
931 /*
932 * If the tid is marked as started, we won't use it for offloaded
933 * traffic on the next D0i3 entry. It's safe to unref.
934 */
935 if (tx_agg_ref)
936 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
937
938 return ret;
939 }
940
941 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
942 struct ieee80211_vif *vif)
943 {
944 struct iwl_mvm *mvm = data;
945 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
946
947 mvmvif->uploaded = false;
948 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
949
950 spin_lock_bh(&mvm->time_event_lock);
951 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
952 spin_unlock_bh(&mvm->time_event_lock);
953
954 mvmvif->phy_ctxt = NULL;
955 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
956 }
957
958 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
959 {
960 /* clear the D3 reconfig, we only need it to avoid dumping a
961 * firmware coredump on reconfiguration, we shouldn't do that
962 * on D3->D0 transition
963 */
964 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
965 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
966 iwl_mvm_fw_error_dump(mvm);
967 }
968
969 /* cleanup all stale references (scan, roc), but keep the
970 * ucode_down ref until reconfig is complete
971 */
972 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
973
974 iwl_mvm_stop_device(mvm);
975
976 mvm->scan_status = 0;
977 mvm->ps_disabled = false;
978 mvm->calibrating = false;
979
980 /* just in case one was running */
981 iwl_mvm_cleanup_roc_te(mvm);
982 ieee80211_remain_on_channel_expired(mvm->hw);
983
984 /*
985 * cleanup all interfaces, even inactive ones, as some might have
986 * gone down during the HW restart
987 */
988 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
989
990 mvm->p2p_device_vif = NULL;
991 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
992
993 iwl_mvm_reset_phy_ctxts(mvm);
994 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
995 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
996 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
997 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
998 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
999 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1000 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1001 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1002 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1003 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1004
1005 ieee80211_wake_queues(mvm->hw);
1006
1007 /* clear any stale d0i3 state */
1008 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1009
1010 mvm->vif_count = 0;
1011 mvm->rx_ba_sessions = 0;
1012 mvm->fw_dbg_conf = FW_DBG_INVALID;
1013
1014 /* keep statistics ticking */
1015 iwl_mvm_accu_radio_stats(mvm);
1016 }
1017
1018 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1019 {
1020 int ret;
1021
1022 lockdep_assert_held(&mvm->mutex);
1023
1024 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1025 /* Clean up some internal and mac80211 state on restart */
1026 iwl_mvm_restart_cleanup(mvm);
1027 } else {
1028 /* Hold the reference to prevent runtime suspend while
1029 * the start procedure runs. It's a bit confusing
1030 * that the UCODE_DOWN reference is taken, but it just
1031 * means "UCODE is not UP yet". ( TODO: rename this
1032 * reference).
1033 */
1034 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1035 }
1036 ret = iwl_mvm_up(mvm);
1037
1038 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1039 /* Something went wrong - we need to finish some cleanup
1040 * that normally iwl_mvm_mac_restart_complete() below
1041 * would do.
1042 */
1043 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1044 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1045 }
1046
1047 return ret;
1048 }
1049
1050 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1051 {
1052 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1053 int ret;
1054
1055 /* Some hw restart cleanups must not hold the mutex */
1056 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1057 /*
1058 * Make sure we are out of d0i3. This is needed
1059 * to make sure the reference accounting is correct
1060 * (and there is no stale d0i3_exit_work).
1061 */
1062 wait_event_timeout(mvm->d0i3_exit_waitq,
1063 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1064 &mvm->status),
1065 HZ);
1066 }
1067
1068 mutex_lock(&mvm->mutex);
1069 ret = __iwl_mvm_mac_start(mvm);
1070 mutex_unlock(&mvm->mutex);
1071
1072 return ret;
1073 }
1074
1075 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1076 {
1077 int ret;
1078
1079 mutex_lock(&mvm->mutex);
1080
1081 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1082 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1083 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1084 if (ret)
1085 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1086 ret);
1087
1088 /* allow transport/FW low power modes */
1089 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1090
1091 /*
1092 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1093 * of packets the FW sent out, so we must reconnect.
1094 */
1095 iwl_mvm_teardown_tdls_peers(mvm);
1096
1097 mutex_unlock(&mvm->mutex);
1098 }
1099
1100 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1101 {
1102 if (iwl_mvm_is_d0i3_supported(mvm) &&
1103 iwl_mvm_enter_d0i3_on_suspend(mvm))
1104 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1105 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1106 &mvm->status),
1107 HZ),
1108 "D0i3 exit on resume timed out\n");
1109 }
1110
1111 static void
1112 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1113 enum ieee80211_reconfig_type reconfig_type)
1114 {
1115 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1116
1117 switch (reconfig_type) {
1118 case IEEE80211_RECONFIG_TYPE_RESTART:
1119 iwl_mvm_restart_complete(mvm);
1120 break;
1121 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1122 iwl_mvm_resume_complete(mvm);
1123 break;
1124 }
1125 }
1126
1127 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1128 {
1129 lockdep_assert_held(&mvm->mutex);
1130
1131 /* firmware counters are obviously reset now, but we shouldn't
1132 * partially track so also clear the fw_reset_accu counters.
1133 */
1134 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1135
1136 /* async_handlers_wk is now blocked */
1137
1138 /*
1139 * The work item could be running or queued if the
1140 * ROC time event stops just as we get here.
1141 */
1142 flush_work(&mvm->roc_done_wk);
1143
1144 iwl_mvm_stop_device(mvm);
1145
1146 iwl_mvm_async_handlers_purge(mvm);
1147 /* async_handlers_list is empty and will stay empty: HW is stopped */
1148
1149 /* the fw is stopped, the aux sta is dead: clean up driver state */
1150 iwl_mvm_del_aux_sta(mvm);
1151
1152 /*
1153 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1154 * won't be called in this case).
1155 * But make sure to cleanup interfaces that have gone down before/during
1156 * HW restart was requested.
1157 */
1158 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1159 ieee80211_iterate_interfaces(mvm->hw, 0,
1160 iwl_mvm_cleanup_iterator, mvm);
1161
1162 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1163 * make sure there's nothing left there and warn if any is found.
1164 */
1165 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1166 int i;
1167
1168 for (i = 0; i < mvm->max_scans; i++) {
1169 if (WARN_ONCE(mvm->scan_uid_status[i],
1170 "UMAC scan UID %d status was not cleaned\n",
1171 i))
1172 mvm->scan_uid_status[i] = 0;
1173 }
1174 }
1175 }
1176
1177 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1178 {
1179 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1180
1181 flush_work(&mvm->d0i3_exit_work);
1182 flush_work(&mvm->async_handlers_wk);
1183 flush_work(&mvm->add_stream_wk);
1184 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1185 iwl_mvm_free_fw_dump_desc(mvm);
1186
1187 mutex_lock(&mvm->mutex);
1188 __iwl_mvm_mac_stop(mvm);
1189 mutex_unlock(&mvm->mutex);
1190
1191 /*
1192 * The worker might have been waiting for the mutex, let it run and
1193 * discover that its list is now empty.
1194 */
1195 cancel_work_sync(&mvm->async_handlers_wk);
1196 }
1197
1198 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1199 {
1200 u16 i;
1201
1202 lockdep_assert_held(&mvm->mutex);
1203
1204 for (i = 0; i < NUM_PHY_CTX; i++)
1205 if (!mvm->phy_ctxts[i].ref)
1206 return &mvm->phy_ctxts[i];
1207
1208 IWL_ERR(mvm, "No available PHY context\n");
1209 return NULL;
1210 }
1211
1212 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1213 s16 tx_power)
1214 {
1215 struct iwl_dev_tx_power_cmd cmd = {
1216 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1217 .v2.mac_context_id =
1218 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1219 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1220 };
1221 int len = sizeof(cmd);
1222
1223 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1224 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1225
1226 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1227 len = sizeof(cmd.v2);
1228
1229 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1230 }
1231
1232 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1233 struct ieee80211_vif *vif)
1234 {
1235 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1236 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1237 int ret;
1238
1239 mvmvif->mvm = mvm;
1240
1241 /*
1242 * make sure D0i3 exit is completed, otherwise a target access
1243 * during tx queue configuration could be done when still in
1244 * D0i3 state.
1245 */
1246 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1247 if (ret)
1248 return ret;
1249
1250 /*
1251 * Not much to do here. The stack will not allow interface
1252 * types or combinations that we didn't advertise, so we
1253 * don't really have to check the types.
1254 */
1255
1256 mutex_lock(&mvm->mutex);
1257
1258 /* make sure that beacon statistics don't go backwards with FW reset */
1259 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1260 mvmvif->beacon_stats.accu_num_beacons +=
1261 mvmvif->beacon_stats.num_beacons;
1262
1263 /* Allocate resources for the MAC context, and add it to the fw */
1264 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1265 if (ret)
1266 goto out_unlock;
1267
1268 /* Counting number of interfaces is needed for legacy PM */
1269 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1270 mvm->vif_count++;
1271
1272 /*
1273 * The AP binding flow can be done only after the beacon
1274 * template is configured (which happens only in the mac80211
1275 * start_ap() flow), and adding the broadcast station can happen
1276 * only after the binding.
1277 * In addition, since modifying the MAC before adding a bcast
1278 * station is not allowed by the FW, delay the adding of MAC context to
1279 * the point where we can also add the bcast station.
1280 * In short: there's not much we can do at this point, other than
1281 * allocating resources :)
1282 */
1283 if (vif->type == NL80211_IFTYPE_AP ||
1284 vif->type == NL80211_IFTYPE_ADHOC) {
1285 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1286 if (ret) {
1287 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1288 goto out_release;
1289 }
1290
1291 iwl_mvm_vif_dbgfs_register(mvm, vif);
1292 goto out_unlock;
1293 }
1294
1295 mvmvif->features |= hw->netdev_features;
1296
1297 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1298 if (ret)
1299 goto out_release;
1300
1301 ret = iwl_mvm_power_update_mac(mvm);
1302 if (ret)
1303 goto out_remove_mac;
1304
1305 /* beacon filtering */
1306 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1307 if (ret)
1308 goto out_remove_mac;
1309
1310 if (!mvm->bf_allowed_vif &&
1311 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1312 mvm->bf_allowed_vif = mvmvif;
1313 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1314 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1315 }
1316
1317 /*
1318 * P2P_DEVICE interface does not have a channel context assigned to it,
1319 * so a dedicated PHY context is allocated to it and the corresponding
1320 * MAC context is bound to it at this stage.
1321 */
1322 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1323
1324 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1325 if (!mvmvif->phy_ctxt) {
1326 ret = -ENOSPC;
1327 goto out_free_bf;
1328 }
1329
1330 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1331 ret = iwl_mvm_binding_add_vif(mvm, vif);
1332 if (ret)
1333 goto out_unref_phy;
1334
1335 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1336 if (ret)
1337 goto out_unbind;
1338
1339 /* Save a pointer to p2p device vif, so it can later be used to
1340 * update the p2p device MAC when a GO is started/stopped */
1341 mvm->p2p_device_vif = vif;
1342 }
1343
1344 iwl_mvm_vif_dbgfs_register(mvm, vif);
1345 goto out_unlock;
1346
1347 out_unbind:
1348 iwl_mvm_binding_remove_vif(mvm, vif);
1349 out_unref_phy:
1350 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1351 out_free_bf:
1352 if (mvm->bf_allowed_vif == mvmvif) {
1353 mvm->bf_allowed_vif = NULL;
1354 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1355 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1356 }
1357 out_remove_mac:
1358 mvmvif->phy_ctxt = NULL;
1359 iwl_mvm_mac_ctxt_remove(mvm, vif);
1360 out_release:
1361 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1362 mvm->vif_count--;
1363
1364 iwl_mvm_mac_ctxt_release(mvm, vif);
1365 out_unlock:
1366 mutex_unlock(&mvm->mutex);
1367
1368 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1369
1370 return ret;
1371 }
1372
1373 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1374 struct ieee80211_vif *vif)
1375 {
1376 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1377
1378 if (tfd_msk) {
1379 /*
1380 * mac80211 first removes all the stations of the vif and
1381 * then removes the vif. When it removes a station it also
1382 * flushes the AMPDU session. So by now, all the AMPDU sessions
1383 * of all the stations of this vif are closed, and the queues
1384 * of these AMPDU sessions are properly closed.
1385 * We still need to take care of the shared queues of the vif.
1386 * Flush them here.
1387 */
1388 mutex_lock(&mvm->mutex);
1389 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1390 mutex_unlock(&mvm->mutex);
1391
1392 /*
1393 * There are transports that buffer a few frames in the host.
1394 * For these, the flush above isn't enough since while we were
1395 * flushing, the transport might have sent more frames to the
1396 * device. To solve this, wait here until the transport is
1397 * empty. Technically, this could have replaced the flush
1398 * above, but flush is much faster than draining. So flush
1399 * first, and drain to make sure we have no frames in the
1400 * transport anymore.
1401 * If a station still had frames on the shared queues, it is
1402 * already marked as draining, so to complete the draining, we
1403 * just need to wait until the transport is empty.
1404 */
1405 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1406 }
1407
1408 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1409 /*
1410 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1411 * We assume here that all the packets sent to the OFFCHANNEL
1412 * queue are sent in ROC session.
1413 */
1414 flush_work(&mvm->roc_done_wk);
1415 } else {
1416 /*
1417 * By now, all the AC queues are empty. The AGG queues are
1418 * empty too. We already got all the Tx responses for all the
1419 * packets in the queues. The drain work can have been
1420 * triggered. Flush it.
1421 */
1422 flush_work(&mvm->sta_drained_wk);
1423 }
1424 }
1425
1426 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1427 struct ieee80211_vif *vif)
1428 {
1429 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1430 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1431
1432 iwl_mvm_prepare_mac_removal(mvm, vif);
1433
1434 mutex_lock(&mvm->mutex);
1435
1436 if (mvm->bf_allowed_vif == mvmvif) {
1437 mvm->bf_allowed_vif = NULL;
1438 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1439 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1440 }
1441
1442 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1443
1444 /*
1445 * For AP/GO interface, the tear down of the resources allocated to the
1446 * interface is be handled as part of the stop_ap flow.
1447 */
1448 if (vif->type == NL80211_IFTYPE_AP ||
1449 vif->type == NL80211_IFTYPE_ADHOC) {
1450 #ifdef CONFIG_NL80211_TESTMODE
1451 if (vif == mvm->noa_vif) {
1452 mvm->noa_vif = NULL;
1453 mvm->noa_duration = 0;
1454 }
1455 #endif
1456 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1457 goto out_release;
1458 }
1459
1460 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1461 mvm->p2p_device_vif = NULL;
1462 iwl_mvm_rm_bcast_sta(mvm, vif);
1463 iwl_mvm_binding_remove_vif(mvm, vif);
1464 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1465 mvmvif->phy_ctxt = NULL;
1466 }
1467
1468 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1469 mvm->vif_count--;
1470
1471 iwl_mvm_power_update_mac(mvm);
1472 iwl_mvm_mac_ctxt_remove(mvm, vif);
1473
1474 out_release:
1475 iwl_mvm_mac_ctxt_release(mvm, vif);
1476 mutex_unlock(&mvm->mutex);
1477 }
1478
1479 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1480 {
1481 return 0;
1482 }
1483
1484 struct iwl_mvm_mc_iter_data {
1485 struct iwl_mvm *mvm;
1486 int port_id;
1487 };
1488
1489 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1490 struct ieee80211_vif *vif)
1491 {
1492 struct iwl_mvm_mc_iter_data *data = _data;
1493 struct iwl_mvm *mvm = data->mvm;
1494 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1495 int ret, len;
1496
1497 /* if we don't have free ports, mcast frames will be dropped */
1498 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1499 return;
1500
1501 if (vif->type != NL80211_IFTYPE_STATION ||
1502 !vif->bss_conf.assoc)
1503 return;
1504
1505 cmd->port_id = data->port_id++;
1506 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1507 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1508
1509 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1510 if (ret)
1511 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1512 }
1513
1514 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1515 {
1516 struct iwl_mvm_mc_iter_data iter_data = {
1517 .mvm = mvm,
1518 };
1519
1520 lockdep_assert_held(&mvm->mutex);
1521
1522 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1523 return;
1524
1525 ieee80211_iterate_active_interfaces_atomic(
1526 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1527 iwl_mvm_mc_iface_iterator, &iter_data);
1528 }
1529
1530 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1531 struct netdev_hw_addr_list *mc_list)
1532 {
1533 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1534 struct iwl_mcast_filter_cmd *cmd;
1535 struct netdev_hw_addr *addr;
1536 int addr_count;
1537 bool pass_all;
1538 int len;
1539
1540 addr_count = netdev_hw_addr_list_count(mc_list);
1541 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1542 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1543 if (pass_all)
1544 addr_count = 0;
1545
1546 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1547 cmd = kzalloc(len, GFP_ATOMIC);
1548 if (!cmd)
1549 return 0;
1550
1551 if (pass_all) {
1552 cmd->pass_all = 1;
1553 return (u64)(unsigned long)cmd;
1554 }
1555
1556 netdev_hw_addr_list_for_each(addr, mc_list) {
1557 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1558 cmd->count, addr->addr);
1559 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1560 addr->addr, ETH_ALEN);
1561 cmd->count++;
1562 }
1563
1564 return (u64)(unsigned long)cmd;
1565 }
1566
1567 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1568 unsigned int changed_flags,
1569 unsigned int *total_flags,
1570 u64 multicast)
1571 {
1572 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1573 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1574
1575 mutex_lock(&mvm->mutex);
1576
1577 /* replace previous configuration */
1578 kfree(mvm->mcast_filter_cmd);
1579 mvm->mcast_filter_cmd = cmd;
1580
1581 if (!cmd)
1582 goto out;
1583
1584 iwl_mvm_recalc_multicast(mvm);
1585 out:
1586 mutex_unlock(&mvm->mutex);
1587 *total_flags = 0;
1588 }
1589
1590 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1591 struct ieee80211_vif *vif,
1592 unsigned int filter_flags,
1593 unsigned int changed_flags)
1594 {
1595 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1596
1597 /* We support only filter for probe requests */
1598 if (!(changed_flags & FIF_PROBE_REQ))
1599 return;
1600
1601 /* Supported only for p2p client interfaces */
1602 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1603 !vif->p2p)
1604 return;
1605
1606 mutex_lock(&mvm->mutex);
1607 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1608 mutex_unlock(&mvm->mutex);
1609 }
1610
1611 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1612 struct iwl_bcast_iter_data {
1613 struct iwl_mvm *mvm;
1614 struct iwl_bcast_filter_cmd *cmd;
1615 u8 current_filter;
1616 };
1617
1618 static void
1619 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1620 const struct iwl_fw_bcast_filter *in_filter,
1621 struct iwl_fw_bcast_filter *out_filter)
1622 {
1623 struct iwl_fw_bcast_filter_attr *attr;
1624 int i;
1625
1626 memcpy(out_filter, in_filter, sizeof(*out_filter));
1627
1628 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1629 attr = &out_filter->attrs[i];
1630
1631 if (!attr->mask)
1632 break;
1633
1634 switch (attr->reserved1) {
1635 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1636 if (vif->bss_conf.arp_addr_cnt != 1) {
1637 attr->mask = 0;
1638 continue;
1639 }
1640
1641 attr->val = vif->bss_conf.arp_addr_list[0];
1642 break;
1643 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1644 attr->val = *(__be32 *)&vif->addr[2];
1645 break;
1646 default:
1647 break;
1648 }
1649 attr->reserved1 = 0;
1650 out_filter->num_attrs++;
1651 }
1652 }
1653
1654 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1655 struct ieee80211_vif *vif)
1656 {
1657 struct iwl_bcast_iter_data *data = _data;
1658 struct iwl_mvm *mvm = data->mvm;
1659 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1660 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1661 struct iwl_fw_bcast_mac *bcast_mac;
1662 int i;
1663
1664 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1665 return;
1666
1667 bcast_mac = &cmd->macs[mvmvif->id];
1668
1669 /*
1670 * enable filtering only for associated stations, but not for P2P
1671 * Clients
1672 */
1673 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1674 !vif->bss_conf.assoc)
1675 return;
1676
1677 bcast_mac->default_discard = 1;
1678
1679 /* copy all configured filters */
1680 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1681 /*
1682 * Make sure we don't exceed our filters limit.
1683 * if there is still a valid filter to be configured,
1684 * be on the safe side and just allow bcast for this mac.
1685 */
1686 if (WARN_ON_ONCE(data->current_filter >=
1687 ARRAY_SIZE(cmd->filters))) {
1688 bcast_mac->default_discard = 0;
1689 bcast_mac->attached_filters = 0;
1690 break;
1691 }
1692
1693 iwl_mvm_set_bcast_filter(vif,
1694 &mvm->bcast_filters[i],
1695 &cmd->filters[data->current_filter]);
1696
1697 /* skip current filter if it contains no attributes */
1698 if (!cmd->filters[data->current_filter].num_attrs)
1699 continue;
1700
1701 /* attach the filter to current mac */
1702 bcast_mac->attached_filters |=
1703 cpu_to_le16(BIT(data->current_filter));
1704
1705 data->current_filter++;
1706 }
1707 }
1708
1709 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1710 struct iwl_bcast_filter_cmd *cmd)
1711 {
1712 struct iwl_bcast_iter_data iter_data = {
1713 .mvm = mvm,
1714 .cmd = cmd,
1715 };
1716
1717 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1718 return false;
1719
1720 memset(cmd, 0, sizeof(*cmd));
1721 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1722 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1723
1724 #ifdef CONFIG_IWLWIFI_DEBUGFS
1725 /* use debugfs filters/macs if override is configured */
1726 if (mvm->dbgfs_bcast_filtering.override) {
1727 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1728 sizeof(cmd->filters));
1729 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1730 sizeof(cmd->macs));
1731 return true;
1732 }
1733 #endif
1734
1735 /* if no filters are configured, do nothing */
1736 if (!mvm->bcast_filters)
1737 return false;
1738
1739 /* configure and attach these filters for each associated sta vif */
1740 ieee80211_iterate_active_interfaces(
1741 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1742 iwl_mvm_bcast_filter_iterator, &iter_data);
1743
1744 return true;
1745 }
1746
1747 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1748 {
1749 struct iwl_bcast_filter_cmd cmd;
1750
1751 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1752 return 0;
1753
1754 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1755 return 0;
1756
1757 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1758 sizeof(cmd), &cmd);
1759 }
1760 #else
1761 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1762 {
1763 return 0;
1764 }
1765 #endif
1766
1767 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1768 struct ieee80211_vif *vif)
1769 {
1770 struct iwl_mu_group_mgmt_cmd cmd = {};
1771
1772 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1773 WLAN_MEMBERSHIP_LEN);
1774 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1775 WLAN_USER_POSITION_LEN);
1776
1777 return iwl_mvm_send_cmd_pdu(mvm,
1778 WIDE_ID(DATA_PATH_GROUP,
1779 UPDATE_MU_GROUPS_CMD),
1780 0, sizeof(cmd), &cmd);
1781 }
1782
1783 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1784 struct ieee80211_vif *vif)
1785 {
1786 if (vif->mu_mimo_owner) {
1787 struct iwl_mu_group_mgmt_notif *notif = _data;
1788
1789 /*
1790 * MU-MIMO Group Id action frame is little endian. We treat
1791 * the data received from firmware as if it came from the
1792 * action frame, so no conversion is needed.
1793 */
1794 ieee80211_update_mu_groups(vif,
1795 (u8 *)&notif->membership_status,
1796 (u8 *)&notif->user_position);
1797 }
1798 }
1799
1800 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1801 struct iwl_rx_cmd_buffer *rxb)
1802 {
1803 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1804 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1805
1806 ieee80211_iterate_active_interfaces_atomic(
1807 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1808 iwl_mvm_mu_mimo_iface_iterator, notif);
1809 }
1810
1811 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1812 struct ieee80211_vif *vif,
1813 struct ieee80211_bss_conf *bss_conf,
1814 u32 changes)
1815 {
1816 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1817 int ret;
1818
1819 /*
1820 * Re-calculate the tsf id, as the master-slave relations depend on the
1821 * beacon interval, which was not known when the station interface was
1822 * added.
1823 */
1824 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1825 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1826
1827 if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1828 mvmvif->lqm_active)
1829 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1830 0, 0);
1831
1832 /*
1833 * If we're not associated yet, take the (new) BSSID before associating
1834 * so the firmware knows. If we're already associated, then use the old
1835 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1836 * branch for disassociation below.
1837 */
1838 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1839 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1840
1841 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1842 if (ret)
1843 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1844
1845 /* after sending it once, adopt mac80211 data */
1846 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1847 mvmvif->associated = bss_conf->assoc;
1848
1849 if (changes & BSS_CHANGED_ASSOC) {
1850 if (bss_conf->assoc) {
1851 /* clear statistics to get clean beacon counter */
1852 iwl_mvm_request_statistics(mvm, true);
1853 memset(&mvmvif->beacon_stats, 0,
1854 sizeof(mvmvif->beacon_stats));
1855
1856 /* add quota for this interface */
1857 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1858 if (ret) {
1859 IWL_ERR(mvm, "failed to update quotas\n");
1860 return;
1861 }
1862
1863 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1864 &mvm->status)) {
1865 /*
1866 * If we're restarting then the firmware will
1867 * obviously have lost synchronisation with
1868 * the AP. It will attempt to synchronise by
1869 * itself, but we can make it more reliable by
1870 * scheduling a session protection time event.
1871 *
1872 * The firmware needs to receive a beacon to
1873 * catch up with synchronisation, use 110% of
1874 * the beacon interval.
1875 *
1876 * Set a large maximum delay to allow for more
1877 * than a single interface.
1878 */
1879 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1880 iwl_mvm_protect_session(mvm, vif, dur, dur,
1881 5 * dur, false);
1882 }
1883
1884 iwl_mvm_sf_update(mvm, vif, false);
1885 iwl_mvm_power_vif_assoc(mvm, vif);
1886 if (vif->p2p) {
1887 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1888 iwl_mvm_update_smps(mvm, vif,
1889 IWL_MVM_SMPS_REQ_PROT,
1890 IEEE80211_SMPS_DYNAMIC);
1891 }
1892 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1893 /*
1894 * If update fails - SF might be running in associated
1895 * mode while disassociated - which is forbidden.
1896 */
1897 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1898 "Failed to update SF upon disassociation\n");
1899
1900 /* remove AP station now that the MAC is unassoc */
1901 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1902 if (ret)
1903 IWL_ERR(mvm, "failed to remove AP station\n");
1904
1905 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1906 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1907 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1908 /* remove quota for this interface */
1909 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1910 if (ret)
1911 IWL_ERR(mvm, "failed to update quotas\n");
1912
1913 if (vif->p2p)
1914 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1915
1916 /* this will take the cleared BSSID from bss_conf */
1917 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1918 if (ret)
1919 IWL_ERR(mvm,
1920 "failed to update MAC %pM (clear after unassoc)\n",
1921 vif->addr);
1922 }
1923
1924 /*
1925 * The firmware tracks the MU-MIMO group on its own.
1926 * However, on HW restart we should restore this data.
1927 */
1928 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1929 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
1930 ret = iwl_mvm_update_mu_groups(mvm, vif);
1931 if (ret)
1932 IWL_ERR(mvm,
1933 "failed to update VHT MU_MIMO groups\n");
1934 }
1935
1936 iwl_mvm_recalc_multicast(mvm);
1937 iwl_mvm_configure_bcast_filter(mvm);
1938
1939 /* reset rssi values */
1940 mvmvif->bf_data.ave_beacon_signal = 0;
1941
1942 iwl_mvm_bt_coex_vif_change(mvm);
1943 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1944 IEEE80211_SMPS_AUTOMATIC);
1945 if (fw_has_capa(&mvm->fw->ucode_capa,
1946 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1947 iwl_mvm_config_scan(mvm);
1948 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1949 /*
1950 * We received a beacon _after_ association so
1951 * remove the session protection.
1952 */
1953 iwl_mvm_remove_time_event(mvm, mvmvif,
1954 &mvmvif->time_event_data);
1955 }
1956
1957 if (changes & BSS_CHANGED_BEACON_INFO) {
1958 iwl_mvm_sf_update(mvm, vif, false);
1959 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1960 }
1961
1962 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
1963 /*
1964 * Send power command on every beacon change,
1965 * because we may have not enabled beacon abort yet.
1966 */
1967 BSS_CHANGED_BEACON_INFO)) {
1968 ret = iwl_mvm_power_update_mac(mvm);
1969 if (ret)
1970 IWL_ERR(mvm, "failed to update power mode\n");
1971 }
1972
1973 if (changes & BSS_CHANGED_TXPOWER) {
1974 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1975 bss_conf->txpower);
1976 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1977 }
1978
1979 if (changes & BSS_CHANGED_CQM) {
1980 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1981 /* reset cqm events tracking */
1982 mvmvif->bf_data.last_cqm_event = 0;
1983 if (mvmvif->bf_data.bf_enabled) {
1984 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1985 if (ret)
1986 IWL_ERR(mvm,
1987 "failed to update CQM thresholds\n");
1988 }
1989 }
1990
1991 if (changes & BSS_CHANGED_ARP_FILTER) {
1992 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1993 iwl_mvm_configure_bcast_filter(mvm);
1994 }
1995 }
1996
1997 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1998 struct ieee80211_vif *vif)
1999 {
2000 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2001 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2002 int ret;
2003
2004 /*
2005 * iwl_mvm_mac_ctxt_add() might read directly from the device
2006 * (the system time), so make sure it is available.
2007 */
2008 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2009 if (ret)
2010 return ret;
2011
2012 mutex_lock(&mvm->mutex);
2013
2014 /* Send the beacon template */
2015 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2016 if (ret)
2017 goto out_unlock;
2018
2019 /*
2020 * Re-calculate the tsf id, as the master-slave relations depend on the
2021 * beacon interval, which was not known when the AP interface was added.
2022 */
2023 if (vif->type == NL80211_IFTYPE_AP)
2024 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2025
2026 mvmvif->ap_assoc_sta_count = 0;
2027
2028 /* Add the mac context */
2029 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2030 if (ret)
2031 goto out_unlock;
2032
2033 /* Perform the binding */
2034 ret = iwl_mvm_binding_add_vif(mvm, vif);
2035 if (ret)
2036 goto out_remove;
2037
2038 /* Send the bcast station. At this stage the TBTT and DTIM time events
2039 * are added and applied to the scheduler */
2040 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2041 if (ret)
2042 goto out_unbind;
2043
2044 /* must be set before quota calculations */
2045 mvmvif->ap_ibss_active = true;
2046
2047 /* power updated needs to be done before quotas */
2048 iwl_mvm_power_update_mac(mvm);
2049
2050 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2051 if (ret)
2052 goto out_quota_failed;
2053
2054 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2055 if (vif->p2p && mvm->p2p_device_vif)
2056 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2057
2058 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2059
2060 iwl_mvm_bt_coex_vif_change(mvm);
2061
2062 /* we don't support TDLS during DCM */
2063 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2064 iwl_mvm_teardown_tdls_peers(mvm);
2065
2066 goto out_unlock;
2067
2068 out_quota_failed:
2069 iwl_mvm_power_update_mac(mvm);
2070 mvmvif->ap_ibss_active = false;
2071 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2072 out_unbind:
2073 iwl_mvm_binding_remove_vif(mvm, vif);
2074 out_remove:
2075 iwl_mvm_mac_ctxt_remove(mvm, vif);
2076 out_unlock:
2077 mutex_unlock(&mvm->mutex);
2078 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2079 return ret;
2080 }
2081
2082 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2083 struct ieee80211_vif *vif)
2084 {
2085 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2086 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2087
2088 iwl_mvm_prepare_mac_removal(mvm, vif);
2089
2090 mutex_lock(&mvm->mutex);
2091
2092 /* Handle AP stop while in CSA */
2093 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2094 iwl_mvm_remove_time_event(mvm, mvmvif,
2095 &mvmvif->time_event_data);
2096 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2097 mvmvif->csa_countdown = false;
2098 }
2099
2100 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2101 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2102 mvm->csa_tx_block_bcn_timeout = 0;
2103 }
2104
2105 mvmvif->ap_ibss_active = false;
2106 mvm->ap_last_beacon_gp2 = 0;
2107
2108 iwl_mvm_bt_coex_vif_change(mvm);
2109
2110 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2111
2112 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2113 if (vif->p2p && mvm->p2p_device_vif)
2114 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2115
2116 iwl_mvm_update_quotas(mvm, false, NULL);
2117 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2118 iwl_mvm_binding_remove_vif(mvm, vif);
2119
2120 iwl_mvm_power_update_mac(mvm);
2121
2122 iwl_mvm_mac_ctxt_remove(mvm, vif);
2123
2124 mutex_unlock(&mvm->mutex);
2125 }
2126
2127 static void
2128 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2129 struct ieee80211_vif *vif,
2130 struct ieee80211_bss_conf *bss_conf,
2131 u32 changes)
2132 {
2133 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2134
2135 /* Changes will be applied when the AP/IBSS is started */
2136 if (!mvmvif->ap_ibss_active)
2137 return;
2138
2139 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2140 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2141 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2142 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2143
2144 /* Need to send a new beacon template to the FW */
2145 if (changes & BSS_CHANGED_BEACON &&
2146 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2147 IWL_WARN(mvm, "Failed updating beacon data\n");
2148
2149 if (changes & BSS_CHANGED_TXPOWER) {
2150 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2151 bss_conf->txpower);
2152 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2153 }
2154 }
2155
2156 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2157 struct ieee80211_vif *vif,
2158 struct ieee80211_bss_conf *bss_conf,
2159 u32 changes)
2160 {
2161 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2162
2163 /*
2164 * iwl_mvm_bss_info_changed_station() might call
2165 * iwl_mvm_protect_session(), which reads directly from
2166 * the device (the system time), so make sure it is available.
2167 */
2168 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2169 return;
2170
2171 mutex_lock(&mvm->mutex);
2172
2173 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2174 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2175
2176 switch (vif->type) {
2177 case NL80211_IFTYPE_STATION:
2178 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2179 break;
2180 case NL80211_IFTYPE_AP:
2181 case NL80211_IFTYPE_ADHOC:
2182 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2183 break;
2184 default:
2185 /* shouldn't happen */
2186 WARN_ON_ONCE(1);
2187 }
2188
2189 mutex_unlock(&mvm->mutex);
2190 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2191 }
2192
2193 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2194 struct ieee80211_vif *vif,
2195 struct ieee80211_scan_request *hw_req)
2196 {
2197 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2198 int ret;
2199
2200 if (hw_req->req.n_channels == 0 ||
2201 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2202 return -EINVAL;
2203
2204 mutex_lock(&mvm->mutex);
2205 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2206 mutex_unlock(&mvm->mutex);
2207
2208 return ret;
2209 }
2210
2211 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2212 struct ieee80211_vif *vif)
2213 {
2214 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2215
2216 mutex_lock(&mvm->mutex);
2217
2218 /* Due to a race condition, it's possible that mac80211 asks
2219 * us to stop a hw_scan when it's already stopped. This can
2220 * happen, for instance, if we stopped the scan ourselves,
2221 * called ieee80211_scan_completed() and the userspace called
2222 * cancel scan scan before ieee80211_scan_work() could run.
2223 * To handle that, simply return if the scan is not running.
2224 */
2225 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2226 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2227
2228 mutex_unlock(&mvm->mutex);
2229 }
2230
2231 static void
2232 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2233 struct ieee80211_sta *sta, u16 tids,
2234 int num_frames,
2235 enum ieee80211_frame_release_type reason,
2236 bool more_data)
2237 {
2238 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2239
2240 /* Called when we need to transmit (a) frame(s) from mac80211 */
2241
2242 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2243 tids, more_data, false);
2244 }
2245
2246 static void
2247 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2248 struct ieee80211_sta *sta, u16 tids,
2249 int num_frames,
2250 enum ieee80211_frame_release_type reason,
2251 bool more_data)
2252 {
2253 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2254
2255 /* Called when we need to transmit (a) frame(s) from agg queue */
2256
2257 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2258 tids, more_data, true);
2259 }
2260
2261 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2262 struct ieee80211_vif *vif,
2263 enum sta_notify_cmd cmd,
2264 struct ieee80211_sta *sta)
2265 {
2266 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2267 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2268 unsigned long txqs = 0, tids = 0;
2269 int tid;
2270
2271 spin_lock_bh(&mvmsta->lock);
2272 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2273 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2274
2275 if (tid_data->state != IWL_AGG_ON &&
2276 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2277 continue;
2278
2279 __set_bit(tid_data->txq_id, &txqs);
2280
2281 if (iwl_mvm_tid_queued(tid_data) == 0)
2282 continue;
2283
2284 __set_bit(tid, &tids);
2285 }
2286
2287 switch (cmd) {
2288 case STA_NOTIFY_SLEEP:
2289 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2290 ieee80211_sta_block_awake(hw, sta, true);
2291
2292 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2293 ieee80211_sta_set_buffered(sta, tid, true);
2294
2295 if (txqs)
2296 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2297 /*
2298 * The fw updates the STA to be asleep. Tx packets on the Tx
2299 * queues to this station will not be transmitted. The fw will
2300 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2301 */
2302 break;
2303 case STA_NOTIFY_AWAKE:
2304 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2305 break;
2306
2307 if (txqs)
2308 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2309 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2310 break;
2311 default:
2312 break;
2313 }
2314 spin_unlock_bh(&mvmsta->lock);
2315 }
2316
2317 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2318 struct ieee80211_vif *vif,
2319 struct ieee80211_sta *sta)
2320 {
2321 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2322 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2323
2324 /*
2325 * This is called before mac80211 does RCU synchronisation,
2326 * so here we already invalidate our internal RCU-protected
2327 * station pointer. The rest of the code will thus no longer
2328 * be able to find the station this way, and we don't rely
2329 * on further RCU synchronisation after the sta_state()
2330 * callback deleted the station.
2331 */
2332 mutex_lock(&mvm->mutex);
2333 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2334 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2335 ERR_PTR(-ENOENT));
2336
2337 mutex_unlock(&mvm->mutex);
2338 }
2339
2340 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2341 const u8 *bssid)
2342 {
2343 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2344 return;
2345
2346 if (vif->p2p && !iwl_mvm_is_p2p_standalone_uapsd_supported(mvm)) {
2347 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2348 return;
2349 }
2350
2351 if (!vif->p2p &&
2352 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2353 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2354 return;
2355 }
2356
2357 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2358 }
2359
2360 static void
2361 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2362 struct ieee80211_vif *vif, u8 *peer_addr,
2363 enum nl80211_tdls_operation action)
2364 {
2365 struct iwl_fw_dbg_trigger_tlv *trig;
2366 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2367
2368 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2369 return;
2370
2371 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2372 tdls_trig = (void *)trig->data;
2373 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2374 return;
2375
2376 if (!(tdls_trig->action_bitmap & BIT(action)))
2377 return;
2378
2379 if (tdls_trig->peer_mode &&
2380 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2381 return;
2382
2383 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2384 "TDLS event occurred, peer %pM, action %d",
2385 peer_addr, action);
2386 }
2387
2388 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2389 struct iwl_mvm_sta *mvm_sta)
2390 {
2391 struct iwl_mvm_tid_data *tid_data;
2392 struct sk_buff *skb;
2393 int i;
2394
2395 spin_lock_bh(&mvm_sta->lock);
2396 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2397 tid_data = &mvm_sta->tid_data[i];
2398 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames)))
2399 ieee80211_free_txskb(mvm->hw, skb);
2400 }
2401 spin_unlock_bh(&mvm_sta->lock);
2402 }
2403
2404 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2405 struct ieee80211_vif *vif,
2406 struct ieee80211_sta *sta,
2407 enum ieee80211_sta_state old_state,
2408 enum ieee80211_sta_state new_state)
2409 {
2410 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2411 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2412 int ret;
2413
2414 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2415 sta->addr, old_state, new_state);
2416
2417 /* this would be a mac80211 bug ... but don't crash */
2418 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2419 return -EINVAL;
2420
2421 /* if a STA is being removed, reuse its ID */
2422 flush_work(&mvm->sta_drained_wk);
2423
2424 /*
2425 * If we are in a STA removal flow and in DQA mode:
2426 *
2427 * This is after the sync_rcu part, so the queues have already been
2428 * flushed. No more TXs on their way in mac80211's path, and no more in
2429 * the queues.
2430 * Also, we won't be getting any new TX frames for this station.
2431 * What we might have are deferred TX frames that need to be taken care
2432 * of.
2433 *
2434 * Drop any still-queued deferred-frame before removing the STA, and
2435 * make sure the worker is no longer handling frames for this STA.
2436 */
2437 if (old_state == IEEE80211_STA_NONE &&
2438 new_state == IEEE80211_STA_NOTEXIST &&
2439 iwl_mvm_is_dqa_supported(mvm)) {
2440 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2441
2442 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2443 flush_work(&mvm->add_stream_wk);
2444
2445 /*
2446 * No need to make sure deferred TX indication is off since the
2447 * worker will already remove it if it was on
2448 */
2449 }
2450
2451 mutex_lock(&mvm->mutex);
2452 if (old_state == IEEE80211_STA_NOTEXIST &&
2453 new_state == IEEE80211_STA_NONE) {
2454 /*
2455 * Firmware bug - it'll crash if the beacon interval is less
2456 * than 16. We can't avoid connecting at all, so refuse the
2457 * station state change, this will cause mac80211 to abandon
2458 * attempts to connect to this AP, and eventually wpa_s will
2459 * blacklist the AP...
2460 */
2461 if (vif->type == NL80211_IFTYPE_STATION &&
2462 vif->bss_conf.beacon_int < 16) {
2463 IWL_ERR(mvm,
2464 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2465 sta->addr, vif->bss_conf.beacon_int);
2466 ret = -EINVAL;
2467 goto out_unlock;
2468 }
2469
2470 if (sta->tdls &&
2471 (vif->p2p ||
2472 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2473 IWL_MVM_TDLS_STA_COUNT ||
2474 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2475 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2476 ret = -EBUSY;
2477 goto out_unlock;
2478 }
2479
2480 ret = iwl_mvm_add_sta(mvm, vif, sta);
2481 if (sta->tdls && ret == 0) {
2482 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2483 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2484 NL80211_TDLS_SETUP);
2485 }
2486 } else if (old_state == IEEE80211_STA_NONE &&
2487 new_state == IEEE80211_STA_AUTH) {
2488 /*
2489 * EBS may be disabled due to previous failures reported by FW.
2490 * Reset EBS status here assuming environment has been changed.
2491 */
2492 mvm->last_ebs_successful = true;
2493 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2494 ret = 0;
2495 } else if (old_state == IEEE80211_STA_AUTH &&
2496 new_state == IEEE80211_STA_ASSOC) {
2497 if (vif->type == NL80211_IFTYPE_AP) {
2498 mvmvif->ap_assoc_sta_count++;
2499 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2500 }
2501 ret = iwl_mvm_update_sta(mvm, vif, sta);
2502 if (ret == 0)
2503 iwl_mvm_rs_rate_init(mvm, sta,
2504 mvmvif->phy_ctxt->channel->band,
2505 true);
2506 } else if (old_state == IEEE80211_STA_ASSOC &&
2507 new_state == IEEE80211_STA_AUTHORIZED) {
2508
2509 /* we don't support TDLS during DCM */
2510 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2511 iwl_mvm_teardown_tdls_peers(mvm);
2512
2513 if (sta->tdls)
2514 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2515 NL80211_TDLS_ENABLE_LINK);
2516
2517 /* enable beacon filtering */
2518 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2519 ret = 0;
2520 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2521 new_state == IEEE80211_STA_ASSOC) {
2522 /* disable beacon filtering */
2523 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2524 ret = 0;
2525 } else if (old_state == IEEE80211_STA_ASSOC &&
2526 new_state == IEEE80211_STA_AUTH) {
2527 if (vif->type == NL80211_IFTYPE_AP) {
2528 mvmvif->ap_assoc_sta_count--;
2529 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2530 }
2531 ret = 0;
2532 } else if (old_state == IEEE80211_STA_AUTH &&
2533 new_state == IEEE80211_STA_NONE) {
2534 ret = 0;
2535 } else if (old_state == IEEE80211_STA_NONE &&
2536 new_state == IEEE80211_STA_NOTEXIST) {
2537 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2538 if (sta->tdls) {
2539 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2540 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2541 NL80211_TDLS_DISABLE_LINK);
2542 }
2543 } else {
2544 ret = -EIO;
2545 }
2546 out_unlock:
2547 mutex_unlock(&mvm->mutex);
2548
2549 if (sta->tdls && ret == 0) {
2550 if (old_state == IEEE80211_STA_NOTEXIST &&
2551 new_state == IEEE80211_STA_NONE)
2552 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2553 else if (old_state == IEEE80211_STA_NONE &&
2554 new_state == IEEE80211_STA_NOTEXIST)
2555 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2556 }
2557
2558 return ret;
2559 }
2560
2561 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2562 {
2563 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2564
2565 mvm->rts_threshold = value;
2566
2567 return 0;
2568 }
2569
2570 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2571 struct ieee80211_vif *vif,
2572 struct ieee80211_sta *sta, u32 changed)
2573 {
2574 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2575
2576 if (vif->type == NL80211_IFTYPE_STATION &&
2577 changed & IEEE80211_RC_NSS_CHANGED)
2578 iwl_mvm_sf_update(mvm, vif, false);
2579 }
2580
2581 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2582 struct ieee80211_vif *vif, u16 ac,
2583 const struct ieee80211_tx_queue_params *params)
2584 {
2585 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2586 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2587
2588 mvmvif->queue_params[ac] = *params;
2589
2590 /*
2591 * No need to update right away, we'll get BSS_CHANGED_QOS
2592 * The exception is P2P_DEVICE interface which needs immediate update.
2593 */
2594 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2595 int ret;
2596
2597 mutex_lock(&mvm->mutex);
2598 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2599 mutex_unlock(&mvm->mutex);
2600 return ret;
2601 }
2602 return 0;
2603 }
2604
2605 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2606 struct ieee80211_vif *vif)
2607 {
2608 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2609 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2610 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2611
2612 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2613 return;
2614
2615 /*
2616 * iwl_mvm_protect_session() reads directly from the device
2617 * (the system time), so make sure it is available.
2618 */
2619 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2620 return;
2621
2622 mutex_lock(&mvm->mutex);
2623 /* Try really hard to protect the session and hear a beacon */
2624 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2625 mutex_unlock(&mvm->mutex);
2626
2627 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2628 }
2629
2630 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2631 struct ieee80211_vif *vif,
2632 struct cfg80211_sched_scan_request *req,
2633 struct ieee80211_scan_ies *ies)
2634 {
2635 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2636
2637 int ret;
2638
2639 mutex_lock(&mvm->mutex);
2640
2641 if (!vif->bss_conf.idle) {
2642 ret = -EBUSY;
2643 goto out;
2644 }
2645
2646 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2647
2648 out:
2649 mutex_unlock(&mvm->mutex);
2650 return ret;
2651 }
2652
2653 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2654 struct ieee80211_vif *vif)
2655 {
2656 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2657 int ret;
2658
2659 mutex_lock(&mvm->mutex);
2660
2661 /* Due to a race condition, it's possible that mac80211 asks
2662 * us to stop a sched_scan when it's already stopped. This
2663 * can happen, for instance, if we stopped the scan ourselves,
2664 * called ieee80211_sched_scan_stopped() and the userspace called
2665 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2666 * could run. To handle this, simply return if the scan is
2667 * not running.
2668 */
2669 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2670 mutex_unlock(&mvm->mutex);
2671 return 0;
2672 }
2673
2674 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2675 mutex_unlock(&mvm->mutex);
2676 iwl_mvm_wait_for_async_handlers(mvm);
2677
2678 return ret;
2679 }
2680
2681 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2682 enum set_key_cmd cmd,
2683 struct ieee80211_vif *vif,
2684 struct ieee80211_sta *sta,
2685 struct ieee80211_key_conf *key)
2686 {
2687 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2688 struct iwl_mvm_sta *mvmsta;
2689 struct iwl_mvm_key_pn *ptk_pn;
2690 int keyidx = key->keyidx;
2691 int ret;
2692 u8 key_offset;
2693
2694 if (iwlwifi_mod_params.sw_crypto) {
2695 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2696 return -EOPNOTSUPP;
2697 }
2698
2699 switch (key->cipher) {
2700 case WLAN_CIPHER_SUITE_TKIP:
2701 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2702 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2703 break;
2704 case WLAN_CIPHER_SUITE_CCMP:
2705 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2706 break;
2707 case WLAN_CIPHER_SUITE_AES_CMAC:
2708 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2709 break;
2710 case WLAN_CIPHER_SUITE_WEP40:
2711 case WLAN_CIPHER_SUITE_WEP104:
2712 /* For non-client mode, only use WEP keys for TX as we probably
2713 * don't have a station yet anyway and would then have to keep
2714 * track of the keys, linking them to each of the clients/peers
2715 * as they appear. For now, don't do that, for performance WEP
2716 * offload doesn't really matter much, but we need it for some
2717 * other offload features in client mode.
2718 */
2719 if (vif->type != NL80211_IFTYPE_STATION)
2720 return 0;
2721 break;
2722 default:
2723 /* currently FW supports only one optional cipher scheme */
2724 if (hw->n_cipher_schemes &&
2725 hw->cipher_schemes->cipher == key->cipher)
2726 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2727 else
2728 return -EOPNOTSUPP;
2729 }
2730
2731 mutex_lock(&mvm->mutex);
2732
2733 switch (cmd) {
2734 case SET_KEY:
2735 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2736 vif->type == NL80211_IFTYPE_AP) && !sta) {
2737 /*
2738 * GTK on AP interface is a TX-only key, return 0;
2739 * on IBSS they're per-station and because we're lazy
2740 * we don't support them for RX, so do the same.
2741 * CMAC in AP/IBSS modes must be done in software.
2742 */
2743 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
2744 ret = -EOPNOTSUPP;
2745 else
2746 ret = 0;
2747 key->hw_key_idx = STA_KEY_IDX_INVALID;
2748 break;
2749 }
2750
2751 /* During FW restart, in order to restore the state as it was,
2752 * don't try to reprogram keys we previously failed for.
2753 */
2754 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2755 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2756 IWL_DEBUG_MAC80211(mvm,
2757 "skip invalid idx key programming during restart\n");
2758 ret = 0;
2759 break;
2760 }
2761
2762 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2763 sta && iwl_mvm_has_new_rx_api(mvm) &&
2764 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2765 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2766 key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2767 struct ieee80211_key_seq seq;
2768 int tid, q;
2769
2770 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2771 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2772 ptk_pn = kzalloc(sizeof(*ptk_pn) +
2773 mvm->trans->num_rx_queues *
2774 sizeof(ptk_pn->q[0]),
2775 GFP_KERNEL);
2776 if (!ptk_pn) {
2777 ret = -ENOMEM;
2778 break;
2779 }
2780
2781 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2782 ieee80211_get_key_rx_seq(key, tid, &seq);
2783 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2784 memcpy(ptk_pn->q[q].pn[tid],
2785 seq.ccmp.pn,
2786 IEEE80211_CCMP_PN_LEN);
2787 }
2788
2789 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2790 }
2791
2792 /* in HW restart reuse the index, otherwise request a new one */
2793 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2794 key_offset = key->hw_key_idx;
2795 else
2796 key_offset = STA_KEY_IDX_INVALID;
2797
2798 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2799 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2800 if (ret) {
2801 IWL_WARN(mvm, "set key failed\n");
2802 /*
2803 * can't add key for RX, but we don't need it
2804 * in the device for TX so still return 0
2805 */
2806 key->hw_key_idx = STA_KEY_IDX_INVALID;
2807 ret = 0;
2808 }
2809
2810 break;
2811 case DISABLE_KEY:
2812 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2813 ret = 0;
2814 break;
2815 }
2816
2817 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2818 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2819 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2820 key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2821 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2822 ptk_pn = rcu_dereference_protected(
2823 mvmsta->ptk_pn[keyidx],
2824 lockdep_is_held(&mvm->mutex));
2825 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2826 if (ptk_pn)
2827 kfree_rcu(ptk_pn, rcu_head);
2828 }
2829
2830 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2831 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2832 break;
2833 default:
2834 ret = -EINVAL;
2835 }
2836
2837 mutex_unlock(&mvm->mutex);
2838 return ret;
2839 }
2840
2841 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2842 struct ieee80211_vif *vif,
2843 struct ieee80211_key_conf *keyconf,
2844 struct ieee80211_sta *sta,
2845 u32 iv32, u16 *phase1key)
2846 {
2847 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2848
2849 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2850 return;
2851
2852 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2853 }
2854
2855
2856 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2857 struct iwl_rx_packet *pkt, void *data)
2858 {
2859 struct iwl_mvm *mvm =
2860 container_of(notif_wait, struct iwl_mvm, notif_wait);
2861 struct iwl_hs20_roc_res *resp;
2862 int resp_len = iwl_rx_packet_payload_len(pkt);
2863 struct iwl_mvm_time_event_data *te_data = data;
2864
2865 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2866 return true;
2867
2868 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2869 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2870 return true;
2871 }
2872
2873 resp = (void *)pkt->data;
2874
2875 IWL_DEBUG_TE(mvm,
2876 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2877 resp->status, resp->event_unique_id);
2878
2879 te_data->uid = le32_to_cpu(resp->event_unique_id);
2880 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2881 te_data->uid);
2882
2883 spin_lock_bh(&mvm->time_event_lock);
2884 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2885 spin_unlock_bh(&mvm->time_event_lock);
2886
2887 return true;
2888 }
2889
2890 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2891 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2892 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2893 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2894 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2895 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2896 struct ieee80211_channel *channel,
2897 struct ieee80211_vif *vif,
2898 int duration)
2899 {
2900 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2901 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2902 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2903 static const u16 time_event_response[] = { HOT_SPOT_CMD };
2904 struct iwl_notification_wait wait_time_event;
2905 u32 dtim_interval = vif->bss_conf.dtim_period *
2906 vif->bss_conf.beacon_int;
2907 u32 req_dur, delay;
2908 struct iwl_hs20_roc_req aux_roc_req = {
2909 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2910 .id_and_color =
2911 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2912 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2913 /* Set the channel info data */
2914 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2915 PHY_BAND_24 : PHY_BAND_5,
2916 .channel_info.channel = channel->hw_value,
2917 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2918 /* Set the time and duration */
2919 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2920 };
2921
2922 delay = AUX_ROC_MIN_DELAY;
2923 req_dur = MSEC_TO_TU(duration);
2924
2925 /*
2926 * If we are associated we want the delay time to be at least one
2927 * dtim interval so that the FW can wait until after the DTIM and
2928 * then start the time event, this will potentially allow us to
2929 * remain off-channel for the max duration.
2930 * Since we want to use almost a whole dtim interval we would also
2931 * like the delay to be for 2-3 dtim intervals, in case there are
2932 * other time events with higher priority.
2933 */
2934 if (vif->bss_conf.assoc) {
2935 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2936 /* We cannot remain off-channel longer than the DTIM interval */
2937 if (dtim_interval <= req_dur) {
2938 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2939 if (req_dur <= AUX_ROC_MIN_DURATION)
2940 req_dur = dtim_interval -
2941 AUX_ROC_MIN_SAFETY_BUFFER;
2942 }
2943 }
2944
2945 aux_roc_req.duration = cpu_to_le32(req_dur);
2946 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2947
2948 IWL_DEBUG_TE(mvm,
2949 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2950 channel->hw_value, req_dur, duration, delay,
2951 dtim_interval);
2952 /* Set the node address */
2953 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2954
2955 lockdep_assert_held(&mvm->mutex);
2956
2957 spin_lock_bh(&mvm->time_event_lock);
2958
2959 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2960 spin_unlock_bh(&mvm->time_event_lock);
2961 return -EIO;
2962 }
2963
2964 te_data->vif = vif;
2965 te_data->duration = duration;
2966 te_data->id = HOT_SPOT_CMD;
2967
2968 spin_unlock_bh(&mvm->time_event_lock);
2969
2970 /*
2971 * Use a notification wait, which really just processes the
2972 * command response and doesn't wait for anything, in order
2973 * to be able to process the response and get the UID inside
2974 * the RX path. Using CMD_WANT_SKB doesn't work because it
2975 * stores the buffer and then wakes up this thread, by which
2976 * time another notification (that the time event started)
2977 * might already be processed unsuccessfully.
2978 */
2979 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2980 time_event_response,
2981 ARRAY_SIZE(time_event_response),
2982 iwl_mvm_rx_aux_roc, te_data);
2983
2984 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2985 &aux_roc_req);
2986
2987 if (res) {
2988 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2989 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2990 goto out_clear_te;
2991 }
2992
2993 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2994 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2995 /* should never fail */
2996 WARN_ON_ONCE(res);
2997
2998 if (res) {
2999 out_clear_te:
3000 spin_lock_bh(&mvm->time_event_lock);
3001 iwl_mvm_te_clear_data(mvm, te_data);
3002 spin_unlock_bh(&mvm->time_event_lock);
3003 }
3004
3005 return res;
3006 }
3007
3008 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3009 struct ieee80211_vif *vif,
3010 struct ieee80211_channel *channel,
3011 int duration,
3012 enum ieee80211_roc_type type)
3013 {
3014 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3015 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3016 struct cfg80211_chan_def chandef;
3017 struct iwl_mvm_phy_ctxt *phy_ctxt;
3018 int ret, i;
3019
3020 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3021 duration, type);
3022
3023 flush_work(&mvm->roc_done_wk);
3024
3025 mutex_lock(&mvm->mutex);
3026
3027 switch (vif->type) {
3028 case NL80211_IFTYPE_STATION:
3029 if (fw_has_capa(&mvm->fw->ucode_capa,
3030 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3031 /* Use aux roc framework (HS20) */
3032 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3033 vif, duration);
3034 goto out_unlock;
3035 }
3036 IWL_ERR(mvm, "hotspot not supported\n");
3037 ret = -EINVAL;
3038 goto out_unlock;
3039 case NL80211_IFTYPE_P2P_DEVICE:
3040 /* handle below */
3041 break;
3042 default:
3043 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3044 ret = -EINVAL;
3045 goto out_unlock;
3046 }
3047
3048 for (i = 0; i < NUM_PHY_CTX; i++) {
3049 phy_ctxt = &mvm->phy_ctxts[i];
3050 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3051 continue;
3052
3053 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3054 /*
3055 * Unbind the P2P_DEVICE from the current PHY context,
3056 * and if the PHY context is not used remove it.
3057 */
3058 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3059 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3060 goto out_unlock;
3061
3062 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3063
3064 /* Bind the P2P_DEVICE to the current PHY Context */
3065 mvmvif->phy_ctxt = phy_ctxt;
3066
3067 ret = iwl_mvm_binding_add_vif(mvm, vif);
3068 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3069 goto out_unlock;
3070
3071 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3072 goto schedule_time_event;
3073 }
3074 }
3075
3076 /* Need to update the PHY context only if the ROC channel changed */
3077 if (channel == mvmvif->phy_ctxt->channel)
3078 goto schedule_time_event;
3079
3080 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3081
3082 /*
3083 * Change the PHY context configuration as it is currently referenced
3084 * only by the P2P Device MAC
3085 */
3086 if (mvmvif->phy_ctxt->ref == 1) {
3087 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3088 &chandef, 1, 1);
3089 if (ret)
3090 goto out_unlock;
3091 } else {
3092 /*
3093 * The PHY context is shared with other MACs. Need to remove the
3094 * P2P Device from the binding, allocate an new PHY context and
3095 * create a new binding
3096 */
3097 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3098 if (!phy_ctxt) {
3099 ret = -ENOSPC;
3100 goto out_unlock;
3101 }
3102
3103 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3104 1, 1);
3105 if (ret) {
3106 IWL_ERR(mvm, "Failed to change PHY context\n");
3107 goto out_unlock;
3108 }
3109
3110 /* Unbind the P2P_DEVICE from the current PHY context */
3111 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3112 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3113 goto out_unlock;
3114
3115 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3116
3117 /* Bind the P2P_DEVICE to the new allocated PHY context */
3118 mvmvif->phy_ctxt = phy_ctxt;
3119
3120 ret = iwl_mvm_binding_add_vif(mvm, vif);
3121 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3122 goto out_unlock;
3123
3124 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3125 }
3126
3127 schedule_time_event:
3128 /* Schedule the time events */
3129 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3130
3131 out_unlock:
3132 mutex_unlock(&mvm->mutex);
3133 IWL_DEBUG_MAC80211(mvm, "leave\n");
3134 return ret;
3135 }
3136
3137 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3138 {
3139 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3140
3141 IWL_DEBUG_MAC80211(mvm, "enter\n");
3142
3143 mutex_lock(&mvm->mutex);
3144 iwl_mvm_stop_roc(mvm);
3145 mutex_unlock(&mvm->mutex);
3146
3147 IWL_DEBUG_MAC80211(mvm, "leave\n");
3148 return 0;
3149 }
3150
3151 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3152 struct ieee80211_chanctx_conf *ctx)
3153 {
3154 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3155 struct iwl_mvm_phy_ctxt *phy_ctxt;
3156 int ret;
3157
3158 lockdep_assert_held(&mvm->mutex);
3159
3160 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3161
3162 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3163 if (!phy_ctxt) {
3164 ret = -ENOSPC;
3165 goto out;
3166 }
3167
3168 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3169 ctx->rx_chains_static,
3170 ctx->rx_chains_dynamic);
3171 if (ret) {
3172 IWL_ERR(mvm, "Failed to add PHY context\n");
3173 goto out;
3174 }
3175
3176 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3177 *phy_ctxt_id = phy_ctxt->id;
3178 out:
3179 return ret;
3180 }
3181
3182 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3183 struct ieee80211_chanctx_conf *ctx)
3184 {
3185 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3186 int ret;
3187
3188 mutex_lock(&mvm->mutex);
3189 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3190 mutex_unlock(&mvm->mutex);
3191
3192 return ret;
3193 }
3194
3195 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3196 struct ieee80211_chanctx_conf *ctx)
3197 {
3198 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3199 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3200
3201 lockdep_assert_held(&mvm->mutex);
3202
3203 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3204 }
3205
3206 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3207 struct ieee80211_chanctx_conf *ctx)
3208 {
3209 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3210
3211 mutex_lock(&mvm->mutex);
3212 __iwl_mvm_remove_chanctx(mvm, ctx);
3213 mutex_unlock(&mvm->mutex);
3214 }
3215
3216 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3217 struct ieee80211_chanctx_conf *ctx,
3218 u32 changed)
3219 {
3220 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3221 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3222 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3223
3224 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3225 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3226 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3227 IEEE80211_CHANCTX_CHANGE_RADAR |
3228 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3229 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3230 phy_ctxt->ref, changed))
3231 return;
3232
3233 mutex_lock(&mvm->mutex);
3234 iwl_mvm_bt_coex_vif_change(mvm);
3235 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3236 ctx->rx_chains_static,
3237 ctx->rx_chains_dynamic);
3238 mutex_unlock(&mvm->mutex);
3239 }
3240
3241 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3242 struct ieee80211_vif *vif,
3243 struct ieee80211_chanctx_conf *ctx,
3244 bool switching_chanctx)
3245 {
3246 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3247 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3248 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3249 int ret;
3250
3251 lockdep_assert_held(&mvm->mutex);
3252
3253 mvmvif->phy_ctxt = phy_ctxt;
3254
3255 switch (vif->type) {
3256 case NL80211_IFTYPE_AP:
3257 /* only needed if we're switching chanctx (i.e. during CSA) */
3258 if (switching_chanctx) {
3259 mvmvif->ap_ibss_active = true;
3260 break;
3261 }
3262 case NL80211_IFTYPE_ADHOC:
3263 /*
3264 * The AP binding flow is handled as part of the start_ap flow
3265 * (in bss_info_changed), similarly for IBSS.
3266 */
3267 ret = 0;
3268 goto out;
3269 case NL80211_IFTYPE_STATION:
3270 break;
3271 case NL80211_IFTYPE_MONITOR:
3272 /* always disable PS when a monitor interface is active */
3273 mvmvif->ps_disabled = true;
3274 break;
3275 default:
3276 ret = -EINVAL;
3277 goto out;
3278 }
3279
3280 ret = iwl_mvm_binding_add_vif(mvm, vif);
3281 if (ret)
3282 goto out;
3283
3284 /*
3285 * Power state must be updated before quotas,
3286 * otherwise fw will complain.
3287 */
3288 iwl_mvm_power_update_mac(mvm);
3289
3290 /* Setting the quota at this stage is only required for monitor
3291 * interfaces. For the other types, the bss_info changed flow
3292 * will handle quota settings.
3293 */
3294 if (vif->type == NL80211_IFTYPE_MONITOR) {
3295 mvmvif->monitor_active = true;
3296 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3297 if (ret)
3298 goto out_remove_binding;
3299
3300 ret = iwl_mvm_add_snif_sta(mvm, vif);
3301 if (ret)
3302 goto out_remove_binding;
3303
3304 }
3305
3306 /* Handle binding during CSA */
3307 if (vif->type == NL80211_IFTYPE_AP) {
3308 iwl_mvm_update_quotas(mvm, false, NULL);
3309 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3310 }
3311
3312 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3313 u32 duration = 2 * vif->bss_conf.beacon_int;
3314
3315 /* iwl_mvm_protect_session() reads directly from the
3316 * device (the system time), so make sure it is
3317 * available.
3318 */
3319 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3320 if (ret)
3321 goto out_remove_binding;
3322
3323 /* Protect the session to make sure we hear the first
3324 * beacon on the new channel.
3325 */
3326 iwl_mvm_protect_session(mvm, vif, duration, duration,
3327 vif->bss_conf.beacon_int / 2,
3328 true);
3329
3330 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3331
3332 iwl_mvm_update_quotas(mvm, false, NULL);
3333 }
3334
3335 goto out;
3336
3337 out_remove_binding:
3338 iwl_mvm_binding_remove_vif(mvm, vif);
3339 iwl_mvm_power_update_mac(mvm);
3340 out:
3341 if (ret)
3342 mvmvif->phy_ctxt = NULL;
3343 return ret;
3344 }
3345 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3346 struct ieee80211_vif *vif,
3347 struct ieee80211_chanctx_conf *ctx)
3348 {
3349 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3350 int ret;
3351
3352 mutex_lock(&mvm->mutex);
3353 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3354 mutex_unlock(&mvm->mutex);
3355
3356 return ret;
3357 }
3358
3359 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3360 struct ieee80211_vif *vif,
3361 struct ieee80211_chanctx_conf *ctx,
3362 bool switching_chanctx)
3363 {
3364 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3365 struct ieee80211_vif *disabled_vif = NULL;
3366
3367 lockdep_assert_held(&mvm->mutex);
3368
3369 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3370
3371 switch (vif->type) {
3372 case NL80211_IFTYPE_ADHOC:
3373 goto out;
3374 case NL80211_IFTYPE_MONITOR:
3375 mvmvif->monitor_active = false;
3376 mvmvif->ps_disabled = false;
3377 iwl_mvm_rm_snif_sta(mvm, vif);
3378 break;
3379 case NL80211_IFTYPE_AP:
3380 /* This part is triggered only during CSA */
3381 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3382 goto out;
3383
3384 mvmvif->csa_countdown = false;
3385
3386 /* Set CS bit on all the stations */
3387 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3388
3389 /* Save blocked iface, the timeout is set on the next beacon */
3390 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3391
3392 mvmvif->ap_ibss_active = false;
3393 break;
3394 case NL80211_IFTYPE_STATION:
3395 if (!switching_chanctx)
3396 break;
3397
3398 disabled_vif = vif;
3399
3400 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3401 break;
3402 default:
3403 break;
3404 }
3405
3406 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3407 iwl_mvm_binding_remove_vif(mvm, vif);
3408
3409 out:
3410 mvmvif->phy_ctxt = NULL;
3411 iwl_mvm_power_update_mac(mvm);
3412 }
3413
3414 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3415 struct ieee80211_vif *vif,
3416 struct ieee80211_chanctx_conf *ctx)
3417 {
3418 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3419
3420 mutex_lock(&mvm->mutex);
3421 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3422 mutex_unlock(&mvm->mutex);
3423 }
3424
3425 static int
3426 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3427 struct ieee80211_vif_chanctx_switch *vifs)
3428 {
3429 int ret;
3430
3431 mutex_lock(&mvm->mutex);
3432 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3433 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3434
3435 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3436 if (ret) {
3437 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3438 goto out_reassign;
3439 }
3440
3441 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3442 true);
3443 if (ret) {
3444 IWL_ERR(mvm,
3445 "failed to assign new_ctx during channel switch\n");
3446 goto out_remove;
3447 }
3448
3449 /* we don't support TDLS during DCM - can be caused by channel switch */
3450 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3451 iwl_mvm_teardown_tdls_peers(mvm);
3452
3453 goto out;
3454
3455 out_remove:
3456 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3457
3458 out_reassign:
3459 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3460 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3461 goto out_restart;
3462 }
3463
3464 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3465 true)) {
3466 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3467 goto out_restart;
3468 }
3469
3470 goto out;
3471
3472 out_restart:
3473 /* things keep failing, better restart the hw */
3474 iwl_mvm_nic_restart(mvm, false);
3475
3476 out:
3477 mutex_unlock(&mvm->mutex);
3478
3479 return ret;
3480 }
3481
3482 static int
3483 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3484 struct ieee80211_vif_chanctx_switch *vifs)
3485 {
3486 int ret;
3487
3488 mutex_lock(&mvm->mutex);
3489 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3490
3491 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3492 true);
3493 if (ret) {
3494 IWL_ERR(mvm,
3495 "failed to assign new_ctx during channel switch\n");
3496 goto out_reassign;
3497 }
3498
3499 goto out;
3500
3501 out_reassign:
3502 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3503 true)) {
3504 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3505 goto out_restart;
3506 }
3507
3508 goto out;
3509
3510 out_restart:
3511 /* things keep failing, better restart the hw */
3512 iwl_mvm_nic_restart(mvm, false);
3513
3514 out:
3515 mutex_unlock(&mvm->mutex);
3516
3517 return ret;
3518 }
3519
3520 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3521 struct ieee80211_vif_chanctx_switch *vifs,
3522 int n_vifs,
3523 enum ieee80211_chanctx_switch_mode mode)
3524 {
3525 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3526 int ret;
3527
3528 /* we only support a single-vif right now */
3529 if (n_vifs > 1)
3530 return -EOPNOTSUPP;
3531
3532 switch (mode) {
3533 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3534 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3535 break;
3536 case CHANCTX_SWMODE_REASSIGN_VIF:
3537 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3538 break;
3539 default:
3540 ret = -EOPNOTSUPP;
3541 break;
3542 }
3543
3544 return ret;
3545 }
3546
3547 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3548 struct ieee80211_sta *sta,
3549 bool set)
3550 {
3551 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3552 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3553
3554 if (!mvm_sta || !mvm_sta->vif) {
3555 IWL_ERR(mvm, "Station is not associated to a vif\n");
3556 return -EINVAL;
3557 }
3558
3559 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3560 }
3561
3562 #ifdef CONFIG_NL80211_TESTMODE
3563 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3564 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3565 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3566 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3567 };
3568
3569 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3570 struct ieee80211_vif *vif,
3571 void *data, int len)
3572 {
3573 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3574 int err;
3575 u32 noa_duration;
3576
3577 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3578 if (err)
3579 return err;
3580
3581 if (!tb[IWL_MVM_TM_ATTR_CMD])
3582 return -EINVAL;
3583
3584 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3585 case IWL_MVM_TM_CMD_SET_NOA:
3586 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3587 !vif->bss_conf.enable_beacon ||
3588 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3589 return -EINVAL;
3590
3591 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3592 if (noa_duration >= vif->bss_conf.beacon_int)
3593 return -EINVAL;
3594
3595 mvm->noa_duration = noa_duration;
3596 mvm->noa_vif = vif;
3597
3598 return iwl_mvm_update_quotas(mvm, false, NULL);
3599 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3600 /* must be associated client vif - ignore authorized */
3601 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3602 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3603 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3604 return -EINVAL;
3605
3606 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3607 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3608 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3609 }
3610
3611 return -EOPNOTSUPP;
3612 }
3613
3614 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3615 struct ieee80211_vif *vif,
3616 void *data, int len)
3617 {
3618 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3619 int err;
3620
3621 mutex_lock(&mvm->mutex);
3622 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3623 mutex_unlock(&mvm->mutex);
3624
3625 return err;
3626 }
3627 #endif
3628
3629 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3630 struct ieee80211_vif *vif,
3631 struct ieee80211_channel_switch *chsw)
3632 {
3633 /* By implementing this operation, we prevent mac80211 from
3634 * starting its own channel switch timer, so that we can call
3635 * ieee80211_chswitch_done() ourselves at the right time
3636 * (which is when the absence time event starts).
3637 */
3638
3639 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3640 "dummy channel switch op\n");
3641 }
3642
3643 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3644 struct ieee80211_vif *vif,
3645 struct ieee80211_channel_switch *chsw)
3646 {
3647 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3648 struct ieee80211_vif *csa_vif;
3649 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3650 u32 apply_time;
3651 int ret;
3652
3653 mutex_lock(&mvm->mutex);
3654
3655 mvmvif->csa_failed = false;
3656
3657 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3658 chsw->chandef.center_freq1);
3659
3660 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3661
3662 switch (vif->type) {
3663 case NL80211_IFTYPE_AP:
3664 csa_vif =
3665 rcu_dereference_protected(mvm->csa_vif,
3666 lockdep_is_held(&mvm->mutex));
3667 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3668 "Another CSA is already in progress")) {
3669 ret = -EBUSY;
3670 goto out_unlock;
3671 }
3672
3673 rcu_assign_pointer(mvm->csa_vif, vif);
3674
3675 if (WARN_ONCE(mvmvif->csa_countdown,
3676 "Previous CSA countdown didn't complete")) {
3677 ret = -EBUSY;
3678 goto out_unlock;
3679 }
3680
3681 break;
3682 case NL80211_IFTYPE_STATION:
3683 if (mvmvif->lqm_active)
3684 iwl_mvm_send_lqm_cmd(vif,
3685 LQM_CMD_OPERATION_STOP_MEASUREMENT,
3686 0, 0);
3687
3688 /* Schedule the time event to a bit before beacon 1,
3689 * to make sure we're in the new channel when the
3690 * GO/AP arrives.
3691 */
3692 apply_time = chsw->device_timestamp +
3693 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3694 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3695
3696 if (chsw->block_tx)
3697 iwl_mvm_csa_client_absent(mvm, vif);
3698
3699 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3700 apply_time);
3701 if (mvmvif->bf_data.bf_enabled) {
3702 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3703 if (ret)
3704 goto out_unlock;
3705 }
3706
3707 break;
3708 default:
3709 break;
3710 }
3711
3712 mvmvif->ps_disabled = true;
3713
3714 ret = iwl_mvm_power_update_ps(mvm);
3715 if (ret)
3716 goto out_unlock;
3717
3718 /* we won't be on this channel any longer */
3719 iwl_mvm_teardown_tdls_peers(mvm);
3720
3721 out_unlock:
3722 mutex_unlock(&mvm->mutex);
3723
3724 return ret;
3725 }
3726
3727 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3728 struct ieee80211_vif *vif)
3729 {
3730 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3731 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3732 int ret;
3733
3734 mutex_lock(&mvm->mutex);
3735
3736 if (mvmvif->csa_failed) {
3737 mvmvif->csa_failed = false;
3738 ret = -EIO;
3739 goto out_unlock;
3740 }
3741
3742 if (vif->type == NL80211_IFTYPE_STATION) {
3743 struct iwl_mvm_sta *mvmsta;
3744
3745 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3746 mvmvif->ap_sta_id);
3747
3748 if (WARN_ON(!mvmsta)) {
3749 ret = -EIO;
3750 goto out_unlock;
3751 }
3752
3753 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3754
3755 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3756
3757 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3758 if (ret)
3759 goto out_unlock;
3760
3761 iwl_mvm_stop_session_protection(mvm, vif);
3762 }
3763
3764 mvmvif->ps_disabled = false;
3765
3766 ret = iwl_mvm_power_update_ps(mvm);
3767
3768 out_unlock:
3769 mutex_unlock(&mvm->mutex);
3770
3771 return ret;
3772 }
3773
3774 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3775 struct ieee80211_vif *vif, u32 queues, bool drop)
3776 {
3777 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3778 struct iwl_mvm_vif *mvmvif;
3779 struct iwl_mvm_sta *mvmsta;
3780 struct ieee80211_sta *sta;
3781 int i;
3782 u32 msk = 0;
3783
3784 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3785 return;
3786
3787 /* Make sure we're done with the deferred traffic before flushing */
3788 if (iwl_mvm_is_dqa_supported(mvm))
3789 flush_work(&mvm->add_stream_wk);
3790
3791 mutex_lock(&mvm->mutex);
3792 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3793
3794 /* flush the AP-station and all TDLS peers */
3795 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3796 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3797 lockdep_is_held(&mvm->mutex));
3798 if (IS_ERR_OR_NULL(sta))
3799 continue;
3800
3801 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3802 if (mvmsta->vif != vif)
3803 continue;
3804
3805 /* make sure only TDLS peers or the AP are flushed */
3806 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3807
3808 msk |= mvmsta->tfd_queue_msk;
3809 }
3810
3811 if (drop) {
3812 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3813 IWL_ERR(mvm, "flush request fail\n");
3814 mutex_unlock(&mvm->mutex);
3815 } else {
3816 mutex_unlock(&mvm->mutex);
3817
3818 /* this can take a while, and we may need/want other operations
3819 * to succeed while doing this, so do it without the mutex held
3820 */
3821 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3822 }
3823 }
3824
3825 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3826 struct survey_info *survey)
3827 {
3828 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3829 int ret;
3830
3831 memset(survey, 0, sizeof(*survey));
3832
3833 /* only support global statistics right now */
3834 if (idx != 0)
3835 return -ENOENT;
3836
3837 if (fw_has_capa(&mvm->fw->ucode_capa,
3838 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3839 return -ENOENT;
3840
3841 mutex_lock(&mvm->mutex);
3842
3843 if (mvm->ucode_loaded) {
3844 ret = iwl_mvm_request_statistics(mvm, false);
3845 if (ret)
3846 goto out;
3847 }
3848
3849 survey->filled = SURVEY_INFO_TIME |
3850 SURVEY_INFO_TIME_RX |
3851 SURVEY_INFO_TIME_TX |
3852 SURVEY_INFO_TIME_SCAN;
3853 survey->time = mvm->accu_radio_stats.on_time_rf +
3854 mvm->radio_stats.on_time_rf;
3855 do_div(survey->time, USEC_PER_MSEC);
3856
3857 survey->time_rx = mvm->accu_radio_stats.rx_time +
3858 mvm->radio_stats.rx_time;
3859 do_div(survey->time_rx, USEC_PER_MSEC);
3860
3861 survey->time_tx = mvm->accu_radio_stats.tx_time +
3862 mvm->radio_stats.tx_time;
3863 do_div(survey->time_tx, USEC_PER_MSEC);
3864
3865 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3866 mvm->radio_stats.on_time_scan;
3867 do_div(survey->time_scan, USEC_PER_MSEC);
3868
3869 ret = 0;
3870 out:
3871 mutex_unlock(&mvm->mutex);
3872 return ret;
3873 }
3874
3875 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3876 struct ieee80211_vif *vif,
3877 struct ieee80211_sta *sta,
3878 struct station_info *sinfo)
3879 {
3880 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3881 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3882 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3883
3884 if (fw_has_capa(&mvm->fw->ucode_capa,
3885 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3886 return;
3887
3888 /* if beacon filtering isn't on mac80211 does it anyway */
3889 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3890 return;
3891
3892 if (!vif->bss_conf.assoc)
3893 return;
3894
3895 mutex_lock(&mvm->mutex);
3896
3897 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3898 goto unlock;
3899
3900 if (iwl_mvm_request_statistics(mvm, false))
3901 goto unlock;
3902
3903 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3904 mvmvif->beacon_stats.accu_num_beacons;
3905 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3906 if (mvmvif->beacon_stats.avg_signal) {
3907 /* firmware only reports a value after RXing a few beacons */
3908 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3909 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3910 }
3911 unlock:
3912 mutex_unlock(&mvm->mutex);
3913 }
3914
3915 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3916 struct ieee80211_vif *vif,
3917 const struct ieee80211_event *event)
3918 {
3919 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
3920 do { \
3921 if ((_cnt) && --(_cnt)) \
3922 break; \
3923 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3924 } while (0)
3925
3926 struct iwl_fw_dbg_trigger_tlv *trig;
3927 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3928
3929 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3930 return;
3931
3932 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3933 trig_mlme = (void *)trig->data;
3934 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3935 return;
3936
3937 if (event->u.mlme.data == ASSOC_EVENT) {
3938 if (event->u.mlme.status == MLME_DENIED)
3939 CHECK_MLME_TRIGGER(mvm, trig, buf,
3940 trig_mlme->stop_assoc_denied,
3941 "DENIED ASSOC: reason %d",
3942 event->u.mlme.reason);
3943 else if (event->u.mlme.status == MLME_TIMEOUT)
3944 CHECK_MLME_TRIGGER(mvm, trig, buf,
3945 trig_mlme->stop_assoc_timeout,
3946 "ASSOC TIMEOUT");
3947 } else if (event->u.mlme.data == AUTH_EVENT) {
3948 if (event->u.mlme.status == MLME_DENIED)
3949 CHECK_MLME_TRIGGER(mvm, trig, buf,
3950 trig_mlme->stop_auth_denied,
3951 "DENIED AUTH: reason %d",
3952 event->u.mlme.reason);
3953 else if (event->u.mlme.status == MLME_TIMEOUT)
3954 CHECK_MLME_TRIGGER(mvm, trig, buf,
3955 trig_mlme->stop_auth_timeout,
3956 "AUTH TIMEOUT");
3957 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3958 CHECK_MLME_TRIGGER(mvm, trig, buf,
3959 trig_mlme->stop_rx_deauth,
3960 "DEAUTH RX %d", event->u.mlme.reason);
3961 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3962 CHECK_MLME_TRIGGER(mvm, trig, buf,
3963 trig_mlme->stop_tx_deauth,
3964 "DEAUTH TX %d", event->u.mlme.reason);
3965 }
3966 #undef CHECK_MLME_TRIGGER
3967 }
3968
3969 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3970 struct ieee80211_vif *vif,
3971 const struct ieee80211_event *event)
3972 {
3973 struct iwl_fw_dbg_trigger_tlv *trig;
3974 struct iwl_fw_dbg_trigger_ba *ba_trig;
3975
3976 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3977 return;
3978
3979 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3980 ba_trig = (void *)trig->data;
3981 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3982 return;
3983
3984 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3985 return;
3986
3987 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3988 "BAR received from %pM, tid %d, ssn %d",
3989 event->u.ba.sta->addr, event->u.ba.tid,
3990 event->u.ba.ssn);
3991 }
3992
3993 static void
3994 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3995 struct ieee80211_vif *vif,
3996 const struct ieee80211_event *event)
3997 {
3998 struct iwl_fw_dbg_trigger_tlv *trig;
3999 struct iwl_fw_dbg_trigger_ba *ba_trig;
4000
4001 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4002 return;
4003
4004 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4005 ba_trig = (void *)trig->data;
4006 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4007 return;
4008
4009 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4010 return;
4011
4012 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4013 "Frame from %pM timed out, tid %d",
4014 event->u.ba.sta->addr, event->u.ba.tid);
4015 }
4016
4017 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4018 struct ieee80211_vif *vif,
4019 const struct ieee80211_event *event)
4020 {
4021 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4022
4023 switch (event->type) {
4024 case MLME_EVENT:
4025 iwl_mvm_event_mlme_callback(mvm, vif, event);
4026 break;
4027 case BAR_RX_EVENT:
4028 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4029 break;
4030 case BA_FRAME_TIMEOUT:
4031 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4032 break;
4033 default:
4034 break;
4035 }
4036 }
4037
4038 const struct ieee80211_ops iwl_mvm_hw_ops = {
4039 .tx = iwl_mvm_mac_tx,
4040 .ampdu_action = iwl_mvm_mac_ampdu_action,
4041 .start = iwl_mvm_mac_start,
4042 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4043 .stop = iwl_mvm_mac_stop,
4044 .add_interface = iwl_mvm_mac_add_interface,
4045 .remove_interface = iwl_mvm_mac_remove_interface,
4046 .config = iwl_mvm_mac_config,
4047 .prepare_multicast = iwl_mvm_prepare_multicast,
4048 .configure_filter = iwl_mvm_configure_filter,
4049 .config_iface_filter = iwl_mvm_config_iface_filter,
4050 .bss_info_changed = iwl_mvm_bss_info_changed,
4051 .hw_scan = iwl_mvm_mac_hw_scan,
4052 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4053 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4054 .sta_state = iwl_mvm_mac_sta_state,
4055 .sta_notify = iwl_mvm_mac_sta_notify,
4056 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4057 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4058 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4059 .sta_rc_update = iwl_mvm_sta_rc_update,
4060 .conf_tx = iwl_mvm_mac_conf_tx,
4061 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4062 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4063 .flush = iwl_mvm_mac_flush,
4064 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4065 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4066 .set_key = iwl_mvm_mac_set_key,
4067 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4068 .remain_on_channel = iwl_mvm_roc,
4069 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4070 .add_chanctx = iwl_mvm_add_chanctx,
4071 .remove_chanctx = iwl_mvm_remove_chanctx,
4072 .change_chanctx = iwl_mvm_change_chanctx,
4073 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4074 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4075 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4076
4077 .start_ap = iwl_mvm_start_ap_ibss,
4078 .stop_ap = iwl_mvm_stop_ap_ibss,
4079 .join_ibss = iwl_mvm_start_ap_ibss,
4080 .leave_ibss = iwl_mvm_stop_ap_ibss,
4081
4082 .set_tim = iwl_mvm_set_tim,
4083
4084 .channel_switch = iwl_mvm_channel_switch,
4085 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4086 .post_channel_switch = iwl_mvm_post_channel_switch,
4087
4088 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4089 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4090 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4091
4092 .event_callback = iwl_mvm_mac_event_callback,
4093
4094 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4095
4096 #ifdef CONFIG_PM_SLEEP
4097 /* look at d3.c */
4098 .suspend = iwl_mvm_suspend,
4099 .resume = iwl_mvm_resume,
4100 .set_wakeup = iwl_mvm_set_wakeup,
4101 .set_rekey_data = iwl_mvm_set_rekey_data,
4102 #if IS_ENABLED(CONFIG_IPV6)
4103 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4104 #endif
4105 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4106 #endif
4107 .get_survey = iwl_mvm_mac_get_survey,
4108 .sta_statistics = iwl_mvm_mac_sta_statistics,
4109 };
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