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Merge tag 'media/v4.6-5' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
[deliverable/linux.git] / drivers / net / wireless / intel / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 * 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 &= ~NETIF_F_RXCSUM;
670
671 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
672 hw->netdev_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
673 NETIF_F_TSO | NETIF_F_TSO6;
674
675 ret = ieee80211_register_hw(mvm->hw);
676 if (ret)
677 iwl_mvm_leds_exit(mvm);
678
679 return ret;
680 }
681
682 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
683 struct ieee80211_sta *sta,
684 struct sk_buff *skb)
685 {
686 struct iwl_mvm_sta *mvmsta;
687 bool defer = false;
688
689 /*
690 * double check the IN_D0I3 flag both before and after
691 * taking the spinlock, in order to prevent taking
692 * the spinlock when not needed.
693 */
694 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
695 return false;
696
697 spin_lock(&mvm->d0i3_tx_lock);
698 /*
699 * testing the flag again ensures the skb dequeue
700 * loop (on d0i3 exit) hasn't run yet.
701 */
702 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
703 goto out;
704
705 mvmsta = iwl_mvm_sta_from_mac80211(sta);
706 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
707 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
708 goto out;
709
710 __skb_queue_tail(&mvm->d0i3_tx, skb);
711 ieee80211_stop_queues(mvm->hw);
712
713 /* trigger wakeup */
714 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
715 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
716
717 defer = true;
718 out:
719 spin_unlock(&mvm->d0i3_tx_lock);
720 return defer;
721 }
722
723 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
724 struct ieee80211_tx_control *control,
725 struct sk_buff *skb)
726 {
727 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
728 struct ieee80211_sta *sta = control->sta;
729 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
730 struct ieee80211_hdr *hdr = (void *)skb->data;
731
732 if (iwl_mvm_is_radio_killed(mvm)) {
733 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
734 goto drop;
735 }
736
737 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
738 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
739 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
740 goto drop;
741
742 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
743 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
744 ieee80211_is_mgmt(hdr->frame_control) &&
745 !ieee80211_is_deauth(hdr->frame_control) &&
746 !ieee80211_is_disassoc(hdr->frame_control) &&
747 !ieee80211_is_action(hdr->frame_control)))
748 sta = NULL;
749
750 if (sta) {
751 if (iwl_mvm_defer_tx(mvm, sta, skb))
752 return;
753 if (iwl_mvm_tx_skb(mvm, skb, sta))
754 goto drop;
755 return;
756 }
757
758 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
759 goto drop;
760 return;
761 drop:
762 ieee80211_free_txskb(hw, skb);
763 }
764
765 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
766 {
767 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
768 return false;
769 return true;
770 }
771
772 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
773 {
774 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
775 return false;
776 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
777 return true;
778
779 /* enabled by default */
780 return true;
781 }
782
783 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
784 do { \
785 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
786 break; \
787 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
788 } while (0)
789
790 static void
791 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
792 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
793 enum ieee80211_ampdu_mlme_action action)
794 {
795 struct iwl_fw_dbg_trigger_tlv *trig;
796 struct iwl_fw_dbg_trigger_ba *ba_trig;
797
798 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
799 return;
800
801 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
802 ba_trig = (void *)trig->data;
803
804 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
805 return;
806
807 switch (action) {
808 case IEEE80211_AMPDU_TX_OPERATIONAL: {
809 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
810 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
811
812 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
813 "TX AGG START: MAC %pM tid %d ssn %d\n",
814 sta->addr, tid, tid_data->ssn);
815 break;
816 }
817 case IEEE80211_AMPDU_TX_STOP_CONT:
818 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
819 "TX AGG STOP: MAC %pM tid %d\n",
820 sta->addr, tid);
821 break;
822 case IEEE80211_AMPDU_RX_START:
823 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
824 "RX AGG START: MAC %pM tid %d ssn %d\n",
825 sta->addr, tid, rx_ba_ssn);
826 break;
827 case IEEE80211_AMPDU_RX_STOP:
828 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
829 "RX AGG STOP: MAC %pM tid %d\n",
830 sta->addr, tid);
831 break;
832 default:
833 break;
834 }
835 }
836
837 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
838 struct ieee80211_vif *vif,
839 struct ieee80211_ampdu_params *params)
840 {
841 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
842 int ret;
843 bool tx_agg_ref = false;
844 struct ieee80211_sta *sta = params->sta;
845 enum ieee80211_ampdu_mlme_action action = params->action;
846 u16 tid = params->tid;
847 u16 *ssn = &params->ssn;
848 u8 buf_size = params->buf_size;
849 bool amsdu = params->amsdu;
850
851 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
852 sta->addr, tid, action);
853
854 if (!(mvm->nvm_data->sku_cap_11n_enable))
855 return -EACCES;
856
857 /* return from D0i3 before starting a new Tx aggregation */
858 switch (action) {
859 case IEEE80211_AMPDU_TX_START:
860 case IEEE80211_AMPDU_TX_STOP_CONT:
861 case IEEE80211_AMPDU_TX_STOP_FLUSH:
862 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
863 case IEEE80211_AMPDU_TX_OPERATIONAL:
864 /*
865 * for tx start, wait synchronously until D0i3 exit to
866 * get the correct sequence number for the tid.
867 * additionally, some other ampdu actions use direct
868 * target access, which is not handled automatically
869 * by the trans layer (unlike commands), so wait for
870 * d0i3 exit in these cases as well.
871 */
872 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
873 if (ret)
874 return ret;
875
876 tx_agg_ref = true;
877 break;
878 default:
879 break;
880 }
881
882 mutex_lock(&mvm->mutex);
883
884 switch (action) {
885 case IEEE80211_AMPDU_RX_START:
886 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
887 ret = -EINVAL;
888 break;
889 }
890 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size);
891 break;
892 case IEEE80211_AMPDU_RX_STOP:
893 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size);
894 break;
895 case IEEE80211_AMPDU_TX_START:
896 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
897 ret = -EINVAL;
898 break;
899 }
900 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
901 break;
902 case IEEE80211_AMPDU_TX_STOP_CONT:
903 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
904 break;
905 case IEEE80211_AMPDU_TX_STOP_FLUSH:
906 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
907 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
908 break;
909 case IEEE80211_AMPDU_TX_OPERATIONAL:
910 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
911 buf_size, amsdu);
912 break;
913 default:
914 WARN_ON_ONCE(1);
915 ret = -EINVAL;
916 break;
917 }
918
919 if (!ret) {
920 u16 rx_ba_ssn = 0;
921
922 if (action == IEEE80211_AMPDU_RX_START)
923 rx_ba_ssn = *ssn;
924
925 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
926 rx_ba_ssn, action);
927 }
928 mutex_unlock(&mvm->mutex);
929
930 /*
931 * If the tid is marked as started, we won't use it for offloaded
932 * traffic on the next D0i3 entry. It's safe to unref.
933 */
934 if (tx_agg_ref)
935 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
936
937 return ret;
938 }
939
940 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
941 struct ieee80211_vif *vif)
942 {
943 struct iwl_mvm *mvm = data;
944 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
945
946 mvmvif->uploaded = false;
947 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
948
949 spin_lock_bh(&mvm->time_event_lock);
950 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
951 spin_unlock_bh(&mvm->time_event_lock);
952
953 mvmvif->phy_ctxt = NULL;
954 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
955 }
956
957 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
958 {
959 /* clear the D3 reconfig, we only need it to avoid dumping a
960 * firmware coredump on reconfiguration, we shouldn't do that
961 * on D3->D0 transition
962 */
963 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
964 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
965 iwl_mvm_fw_error_dump(mvm);
966 }
967
968 /* cleanup all stale references (scan, roc), but keep the
969 * ucode_down ref until reconfig is complete
970 */
971 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
972
973 iwl_mvm_stop_device(mvm);
974
975 mvm->scan_status = 0;
976 mvm->ps_disabled = false;
977 mvm->calibrating = false;
978
979 /* just in case one was running */
980 iwl_mvm_cleanup_roc_te(mvm);
981 ieee80211_remain_on_channel_expired(mvm->hw);
982
983 /*
984 * cleanup all interfaces, even inactive ones, as some might have
985 * gone down during the HW restart
986 */
987 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
988
989 mvm->p2p_device_vif = NULL;
990 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
991
992 iwl_mvm_reset_phy_ctxts(mvm);
993 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
994 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
995 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
996 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
997 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
998 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
999 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1000 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1001 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1002
1003 ieee80211_wake_queues(mvm->hw);
1004
1005 /* clear any stale d0i3 state */
1006 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1007
1008 mvm->vif_count = 0;
1009 mvm->rx_ba_sessions = 0;
1010 mvm->fw_dbg_conf = FW_DBG_INVALID;
1011
1012 /* keep statistics ticking */
1013 iwl_mvm_accu_radio_stats(mvm);
1014 }
1015
1016 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1017 {
1018 int ret;
1019
1020 lockdep_assert_held(&mvm->mutex);
1021
1022 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1023 /* Clean up some internal and mac80211 state on restart */
1024 iwl_mvm_restart_cleanup(mvm);
1025 } else {
1026 /* Hold the reference to prevent runtime suspend while
1027 * the start procedure runs. It's a bit confusing
1028 * that the UCODE_DOWN reference is taken, but it just
1029 * means "UCODE is not UP yet". ( TODO: rename this
1030 * reference).
1031 */
1032 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1033 }
1034 ret = iwl_mvm_up(mvm);
1035
1036 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1037 /* Something went wrong - we need to finish some cleanup
1038 * that normally iwl_mvm_mac_restart_complete() below
1039 * would do.
1040 */
1041 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1042 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1043 }
1044
1045 return ret;
1046 }
1047
1048 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1049 {
1050 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1051 int ret;
1052
1053 /* Some hw restart cleanups must not hold the mutex */
1054 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1055 /*
1056 * Make sure we are out of d0i3. This is needed
1057 * to make sure the reference accounting is correct
1058 * (and there is no stale d0i3_exit_work).
1059 */
1060 wait_event_timeout(mvm->d0i3_exit_waitq,
1061 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1062 &mvm->status),
1063 HZ);
1064 }
1065
1066 mutex_lock(&mvm->mutex);
1067 ret = __iwl_mvm_mac_start(mvm);
1068 mutex_unlock(&mvm->mutex);
1069
1070 return ret;
1071 }
1072
1073 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1074 {
1075 int ret;
1076
1077 mutex_lock(&mvm->mutex);
1078
1079 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1080 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1081 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1082 if (ret)
1083 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1084 ret);
1085
1086 /* allow transport/FW low power modes */
1087 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1088
1089 /*
1090 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1091 * of packets the FW sent out, so we must reconnect.
1092 */
1093 iwl_mvm_teardown_tdls_peers(mvm);
1094
1095 mutex_unlock(&mvm->mutex);
1096 }
1097
1098 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1099 {
1100 if (iwl_mvm_is_d0i3_supported(mvm) &&
1101 iwl_mvm_enter_d0i3_on_suspend(mvm))
1102 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1103 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1104 &mvm->status),
1105 HZ),
1106 "D0i3 exit on resume timed out\n");
1107 }
1108
1109 static void
1110 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1111 enum ieee80211_reconfig_type reconfig_type)
1112 {
1113 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1114
1115 switch (reconfig_type) {
1116 case IEEE80211_RECONFIG_TYPE_RESTART:
1117 iwl_mvm_restart_complete(mvm);
1118 break;
1119 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1120 iwl_mvm_resume_complete(mvm);
1121 break;
1122 }
1123 }
1124
1125 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1126 {
1127 lockdep_assert_held(&mvm->mutex);
1128
1129 /* firmware counters are obviously reset now, but we shouldn't
1130 * partially track so also clear the fw_reset_accu counters.
1131 */
1132 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1133
1134 /* async_handlers_wk is now blocked */
1135
1136 /*
1137 * The work item could be running or queued if the
1138 * ROC time event stops just as we get here.
1139 */
1140 flush_work(&mvm->roc_done_wk);
1141
1142 iwl_mvm_stop_device(mvm);
1143
1144 iwl_mvm_async_handlers_purge(mvm);
1145 /* async_handlers_list is empty and will stay empty: HW is stopped */
1146
1147 /* the fw is stopped, the aux sta is dead: clean up driver state */
1148 iwl_mvm_del_aux_sta(mvm);
1149
1150 iwl_free_fw_paging(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 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1184 iwl_mvm_free_fw_dump_desc(mvm);
1185
1186 mutex_lock(&mvm->mutex);
1187 __iwl_mvm_mac_stop(mvm);
1188 mutex_unlock(&mvm->mutex);
1189
1190 /*
1191 * The worker might have been waiting for the mutex, let it run and
1192 * discover that its list is now empty.
1193 */
1194 cancel_work_sync(&mvm->async_handlers_wk);
1195 }
1196
1197 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1198 {
1199 u16 i;
1200
1201 lockdep_assert_held(&mvm->mutex);
1202
1203 for (i = 0; i < NUM_PHY_CTX; i++)
1204 if (!mvm->phy_ctxts[i].ref)
1205 return &mvm->phy_ctxts[i];
1206
1207 IWL_ERR(mvm, "No available PHY context\n");
1208 return NULL;
1209 }
1210
1211 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1212 s16 tx_power)
1213 {
1214 struct iwl_dev_tx_power_cmd cmd = {
1215 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1216 .v2.mac_context_id =
1217 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1218 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1219 };
1220 int len = sizeof(cmd);
1221
1222 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1223 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1224
1225 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1226 len = sizeof(cmd.v2);
1227
1228 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1229 }
1230
1231 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1232 struct ieee80211_vif *vif)
1233 {
1234 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1235 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1236 int ret;
1237
1238 mvmvif->mvm = mvm;
1239
1240 /*
1241 * make sure D0i3 exit is completed, otherwise a target access
1242 * during tx queue configuration could be done when still in
1243 * D0i3 state.
1244 */
1245 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1246 if (ret)
1247 return ret;
1248
1249 /*
1250 * Not much to do here. The stack will not allow interface
1251 * types or combinations that we didn't advertise, so we
1252 * don't really have to check the types.
1253 */
1254
1255 mutex_lock(&mvm->mutex);
1256
1257 /* make sure that beacon statistics don't go backwards with FW reset */
1258 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1259 mvmvif->beacon_stats.accu_num_beacons +=
1260 mvmvif->beacon_stats.num_beacons;
1261
1262 /* Allocate resources for the MAC context, and add it to the fw */
1263 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1264 if (ret)
1265 goto out_unlock;
1266
1267 /* Counting number of interfaces is needed for legacy PM */
1268 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1269 mvm->vif_count++;
1270
1271 /*
1272 * The AP binding flow can be done only after the beacon
1273 * template is configured (which happens only in the mac80211
1274 * start_ap() flow), and adding the broadcast station can happen
1275 * only after the binding.
1276 * In addition, since modifying the MAC before adding a bcast
1277 * station is not allowed by the FW, delay the adding of MAC context to
1278 * the point where we can also add the bcast station.
1279 * In short: there's not much we can do at this point, other than
1280 * allocating resources :)
1281 */
1282 if (vif->type == NL80211_IFTYPE_AP ||
1283 vif->type == NL80211_IFTYPE_ADHOC) {
1284 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1285 if (ret) {
1286 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1287 goto out_release;
1288 }
1289
1290 iwl_mvm_vif_dbgfs_register(mvm, vif);
1291 goto out_unlock;
1292 }
1293
1294 mvmvif->features |= hw->netdev_features;
1295
1296 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1297 if (ret)
1298 goto out_release;
1299
1300 ret = iwl_mvm_power_update_mac(mvm);
1301 if (ret)
1302 goto out_remove_mac;
1303
1304 /* beacon filtering */
1305 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1306 if (ret)
1307 goto out_remove_mac;
1308
1309 if (!mvm->bf_allowed_vif &&
1310 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1311 mvm->bf_allowed_vif = mvmvif;
1312 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1313 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1314 }
1315
1316 /*
1317 * P2P_DEVICE interface does not have a channel context assigned to it,
1318 * so a dedicated PHY context is allocated to it and the corresponding
1319 * MAC context is bound to it at this stage.
1320 */
1321 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1322
1323 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1324 if (!mvmvif->phy_ctxt) {
1325 ret = -ENOSPC;
1326 goto out_free_bf;
1327 }
1328
1329 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1330 ret = iwl_mvm_binding_add_vif(mvm, vif);
1331 if (ret)
1332 goto out_unref_phy;
1333
1334 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1335 if (ret)
1336 goto out_unbind;
1337
1338 /* Save a pointer to p2p device vif, so it can later be used to
1339 * update the p2p device MAC when a GO is started/stopped */
1340 mvm->p2p_device_vif = vif;
1341 }
1342
1343 iwl_mvm_vif_dbgfs_register(mvm, vif);
1344 goto out_unlock;
1345
1346 out_unbind:
1347 iwl_mvm_binding_remove_vif(mvm, vif);
1348 out_unref_phy:
1349 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1350 out_free_bf:
1351 if (mvm->bf_allowed_vif == mvmvif) {
1352 mvm->bf_allowed_vif = NULL;
1353 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1354 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1355 }
1356 out_remove_mac:
1357 mvmvif->phy_ctxt = NULL;
1358 iwl_mvm_mac_ctxt_remove(mvm, vif);
1359 out_release:
1360 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1361 mvm->vif_count--;
1362
1363 iwl_mvm_mac_ctxt_release(mvm, vif);
1364 out_unlock:
1365 mutex_unlock(&mvm->mutex);
1366
1367 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1368
1369 return ret;
1370 }
1371
1372 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1373 struct ieee80211_vif *vif)
1374 {
1375 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1376
1377 if (tfd_msk) {
1378 /*
1379 * mac80211 first removes all the stations of the vif and
1380 * then removes the vif. When it removes a station it also
1381 * flushes the AMPDU session. So by now, all the AMPDU sessions
1382 * of all the stations of this vif are closed, and the queues
1383 * of these AMPDU sessions are properly closed.
1384 * We still need to take care of the shared queues of the vif.
1385 * Flush them here.
1386 */
1387 mutex_lock(&mvm->mutex);
1388 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1389 mutex_unlock(&mvm->mutex);
1390
1391 /*
1392 * There are transports that buffer a few frames in the host.
1393 * For these, the flush above isn't enough since while we were
1394 * flushing, the transport might have sent more frames to the
1395 * device. To solve this, wait here until the transport is
1396 * empty. Technically, this could have replaced the flush
1397 * above, but flush is much faster than draining. So flush
1398 * first, and drain to make sure we have no frames in the
1399 * transport anymore.
1400 * If a station still had frames on the shared queues, it is
1401 * already marked as draining, so to complete the draining, we
1402 * just need to wait until the transport is empty.
1403 */
1404 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1405 }
1406
1407 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1408 /*
1409 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1410 * We assume here that all the packets sent to the OFFCHANNEL
1411 * queue are sent in ROC session.
1412 */
1413 flush_work(&mvm->roc_done_wk);
1414 } else {
1415 /*
1416 * By now, all the AC queues are empty. The AGG queues are
1417 * empty too. We already got all the Tx responses for all the
1418 * packets in the queues. The drain work can have been
1419 * triggered. Flush it.
1420 */
1421 flush_work(&mvm->sta_drained_wk);
1422 }
1423 }
1424
1425 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1426 struct ieee80211_vif *vif)
1427 {
1428 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1429 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1430
1431 iwl_mvm_prepare_mac_removal(mvm, vif);
1432
1433 mutex_lock(&mvm->mutex);
1434
1435 if (mvm->bf_allowed_vif == mvmvif) {
1436 mvm->bf_allowed_vif = NULL;
1437 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1438 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1439 }
1440
1441 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1442
1443 /*
1444 * For AP/GO interface, the tear down of the resources allocated to the
1445 * interface is be handled as part of the stop_ap flow.
1446 */
1447 if (vif->type == NL80211_IFTYPE_AP ||
1448 vif->type == NL80211_IFTYPE_ADHOC) {
1449 #ifdef CONFIG_NL80211_TESTMODE
1450 if (vif == mvm->noa_vif) {
1451 mvm->noa_vif = NULL;
1452 mvm->noa_duration = 0;
1453 }
1454 #endif
1455 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1456 goto out_release;
1457 }
1458
1459 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1460 mvm->p2p_device_vif = NULL;
1461 iwl_mvm_rm_bcast_sta(mvm, vif);
1462 iwl_mvm_binding_remove_vif(mvm, vif);
1463 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1464 mvmvif->phy_ctxt = NULL;
1465 }
1466
1467 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1468 mvm->vif_count--;
1469
1470 iwl_mvm_power_update_mac(mvm);
1471 iwl_mvm_mac_ctxt_remove(mvm, vif);
1472
1473 out_release:
1474 iwl_mvm_mac_ctxt_release(mvm, vif);
1475 mutex_unlock(&mvm->mutex);
1476 }
1477
1478 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1479 {
1480 return 0;
1481 }
1482
1483 struct iwl_mvm_mc_iter_data {
1484 struct iwl_mvm *mvm;
1485 int port_id;
1486 };
1487
1488 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1489 struct ieee80211_vif *vif)
1490 {
1491 struct iwl_mvm_mc_iter_data *data = _data;
1492 struct iwl_mvm *mvm = data->mvm;
1493 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1494 int ret, len;
1495
1496 /* if we don't have free ports, mcast frames will be dropped */
1497 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1498 return;
1499
1500 if (vif->type != NL80211_IFTYPE_STATION ||
1501 !vif->bss_conf.assoc)
1502 return;
1503
1504 cmd->port_id = data->port_id++;
1505 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1506 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1507
1508 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1509 if (ret)
1510 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1511 }
1512
1513 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1514 {
1515 struct iwl_mvm_mc_iter_data iter_data = {
1516 .mvm = mvm,
1517 };
1518
1519 lockdep_assert_held(&mvm->mutex);
1520
1521 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1522 return;
1523
1524 ieee80211_iterate_active_interfaces_atomic(
1525 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1526 iwl_mvm_mc_iface_iterator, &iter_data);
1527 }
1528
1529 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1530 struct netdev_hw_addr_list *mc_list)
1531 {
1532 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1533 struct iwl_mcast_filter_cmd *cmd;
1534 struct netdev_hw_addr *addr;
1535 int addr_count;
1536 bool pass_all;
1537 int len;
1538
1539 addr_count = netdev_hw_addr_list_count(mc_list);
1540 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1541 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1542 if (pass_all)
1543 addr_count = 0;
1544
1545 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1546 cmd = kzalloc(len, GFP_ATOMIC);
1547 if (!cmd)
1548 return 0;
1549
1550 if (pass_all) {
1551 cmd->pass_all = 1;
1552 return (u64)(unsigned long)cmd;
1553 }
1554
1555 netdev_hw_addr_list_for_each(addr, mc_list) {
1556 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1557 cmd->count, addr->addr);
1558 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1559 addr->addr, ETH_ALEN);
1560 cmd->count++;
1561 }
1562
1563 return (u64)(unsigned long)cmd;
1564 }
1565
1566 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1567 unsigned int changed_flags,
1568 unsigned int *total_flags,
1569 u64 multicast)
1570 {
1571 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1572 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1573
1574 mutex_lock(&mvm->mutex);
1575
1576 /* replace previous configuration */
1577 kfree(mvm->mcast_filter_cmd);
1578 mvm->mcast_filter_cmd = cmd;
1579
1580 if (!cmd)
1581 goto out;
1582
1583 iwl_mvm_recalc_multicast(mvm);
1584 out:
1585 mutex_unlock(&mvm->mutex);
1586 *total_flags = 0;
1587 }
1588
1589 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1590 struct ieee80211_vif *vif,
1591 unsigned int filter_flags,
1592 unsigned int changed_flags)
1593 {
1594 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1595
1596 /* We support only filter for probe requests */
1597 if (!(changed_flags & FIF_PROBE_REQ))
1598 return;
1599
1600 /* Supported only for p2p client interfaces */
1601 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1602 !vif->p2p)
1603 return;
1604
1605 mutex_lock(&mvm->mutex);
1606 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1607 mutex_unlock(&mvm->mutex);
1608 }
1609
1610 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1611 struct iwl_bcast_iter_data {
1612 struct iwl_mvm *mvm;
1613 struct iwl_bcast_filter_cmd *cmd;
1614 u8 current_filter;
1615 };
1616
1617 static void
1618 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1619 const struct iwl_fw_bcast_filter *in_filter,
1620 struct iwl_fw_bcast_filter *out_filter)
1621 {
1622 struct iwl_fw_bcast_filter_attr *attr;
1623 int i;
1624
1625 memcpy(out_filter, in_filter, sizeof(*out_filter));
1626
1627 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1628 attr = &out_filter->attrs[i];
1629
1630 if (!attr->mask)
1631 break;
1632
1633 switch (attr->reserved1) {
1634 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1635 if (vif->bss_conf.arp_addr_cnt != 1) {
1636 attr->mask = 0;
1637 continue;
1638 }
1639
1640 attr->val = vif->bss_conf.arp_addr_list[0];
1641 break;
1642 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1643 attr->val = *(__be32 *)&vif->addr[2];
1644 break;
1645 default:
1646 break;
1647 }
1648 attr->reserved1 = 0;
1649 out_filter->num_attrs++;
1650 }
1651 }
1652
1653 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1654 struct ieee80211_vif *vif)
1655 {
1656 struct iwl_bcast_iter_data *data = _data;
1657 struct iwl_mvm *mvm = data->mvm;
1658 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1659 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1660 struct iwl_fw_bcast_mac *bcast_mac;
1661 int i;
1662
1663 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1664 return;
1665
1666 bcast_mac = &cmd->macs[mvmvif->id];
1667
1668 /*
1669 * enable filtering only for associated stations, but not for P2P
1670 * Clients
1671 */
1672 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1673 !vif->bss_conf.assoc)
1674 return;
1675
1676 bcast_mac->default_discard = 1;
1677
1678 /* copy all configured filters */
1679 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1680 /*
1681 * Make sure we don't exceed our filters limit.
1682 * if there is still a valid filter to be configured,
1683 * be on the safe side and just allow bcast for this mac.
1684 */
1685 if (WARN_ON_ONCE(data->current_filter >=
1686 ARRAY_SIZE(cmd->filters))) {
1687 bcast_mac->default_discard = 0;
1688 bcast_mac->attached_filters = 0;
1689 break;
1690 }
1691
1692 iwl_mvm_set_bcast_filter(vif,
1693 &mvm->bcast_filters[i],
1694 &cmd->filters[data->current_filter]);
1695
1696 /* skip current filter if it contains no attributes */
1697 if (!cmd->filters[data->current_filter].num_attrs)
1698 continue;
1699
1700 /* attach the filter to current mac */
1701 bcast_mac->attached_filters |=
1702 cpu_to_le16(BIT(data->current_filter));
1703
1704 data->current_filter++;
1705 }
1706 }
1707
1708 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1709 struct iwl_bcast_filter_cmd *cmd)
1710 {
1711 struct iwl_bcast_iter_data iter_data = {
1712 .mvm = mvm,
1713 .cmd = cmd,
1714 };
1715
1716 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1717 return false;
1718
1719 memset(cmd, 0, sizeof(*cmd));
1720 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1721 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1722
1723 #ifdef CONFIG_IWLWIFI_DEBUGFS
1724 /* use debugfs filters/macs if override is configured */
1725 if (mvm->dbgfs_bcast_filtering.override) {
1726 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1727 sizeof(cmd->filters));
1728 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1729 sizeof(cmd->macs));
1730 return true;
1731 }
1732 #endif
1733
1734 /* if no filters are configured, do nothing */
1735 if (!mvm->bcast_filters)
1736 return false;
1737
1738 /* configure and attach these filters for each associated sta vif */
1739 ieee80211_iterate_active_interfaces(
1740 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1741 iwl_mvm_bcast_filter_iterator, &iter_data);
1742
1743 return true;
1744 }
1745
1746 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1747 {
1748 struct iwl_bcast_filter_cmd cmd;
1749
1750 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1751 return 0;
1752
1753 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1754 return 0;
1755
1756 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1757 sizeof(cmd), &cmd);
1758 }
1759 #else
1760 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1761 {
1762 return 0;
1763 }
1764 #endif
1765
1766 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1767 struct ieee80211_vif *vif)
1768 {
1769 struct iwl_mu_group_mgmt_cmd cmd = {};
1770
1771 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1772 WLAN_MEMBERSHIP_LEN);
1773 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1774 WLAN_USER_POSITION_LEN);
1775
1776 return iwl_mvm_send_cmd_pdu(mvm,
1777 WIDE_ID(DATA_PATH_GROUP,
1778 UPDATE_MU_GROUPS_CMD),
1779 0, sizeof(cmd), &cmd);
1780 }
1781
1782 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1783 struct ieee80211_vif *vif)
1784 {
1785 if (vif->mu_mimo_owner) {
1786 struct iwl_mu_group_mgmt_notif *notif = _data;
1787
1788 /*
1789 * MU-MIMO Group Id action frame is little endian. We treat
1790 * the data received from firmware as if it came from the
1791 * action frame, so no conversion is needed.
1792 */
1793 ieee80211_update_mu_groups(vif,
1794 (u8 *)&notif->membership_status,
1795 (u8 *)&notif->user_position);
1796 }
1797 }
1798
1799 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1800 struct iwl_rx_cmd_buffer *rxb)
1801 {
1802 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1803 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1804
1805 ieee80211_iterate_active_interfaces_atomic(
1806 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1807 iwl_mvm_mu_mimo_iface_iterator, notif);
1808 }
1809
1810 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1811 struct ieee80211_vif *vif,
1812 struct ieee80211_bss_conf *bss_conf,
1813 u32 changes)
1814 {
1815 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1816 int ret;
1817
1818 /*
1819 * Re-calculate the tsf id, as the master-slave relations depend on the
1820 * beacon interval, which was not known when the station interface was
1821 * added.
1822 */
1823 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1824 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1825
1826 /*
1827 * If we're not associated yet, take the (new) BSSID before associating
1828 * so the firmware knows. If we're already associated, then use the old
1829 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1830 * branch for disassociation below.
1831 */
1832 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1833 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1834
1835 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1836 if (ret)
1837 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1838
1839 /* after sending it once, adopt mac80211 data */
1840 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1841 mvmvif->associated = bss_conf->assoc;
1842
1843 if (changes & BSS_CHANGED_ASSOC) {
1844 if (bss_conf->assoc) {
1845 /* clear statistics to get clean beacon counter */
1846 iwl_mvm_request_statistics(mvm, true);
1847 memset(&mvmvif->beacon_stats, 0,
1848 sizeof(mvmvif->beacon_stats));
1849
1850 /* add quota for this interface */
1851 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1852 if (ret) {
1853 IWL_ERR(mvm, "failed to update quotas\n");
1854 return;
1855 }
1856
1857 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1858 &mvm->status)) {
1859 /*
1860 * If we're restarting then the firmware will
1861 * obviously have lost synchronisation with
1862 * the AP. It will attempt to synchronise by
1863 * itself, but we can make it more reliable by
1864 * scheduling a session protection time event.
1865 *
1866 * The firmware needs to receive a beacon to
1867 * catch up with synchronisation, use 110% of
1868 * the beacon interval.
1869 *
1870 * Set a large maximum delay to allow for more
1871 * than a single interface.
1872 */
1873 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1874 iwl_mvm_protect_session(mvm, vif, dur, dur,
1875 5 * dur, false);
1876 }
1877
1878 iwl_mvm_sf_update(mvm, vif, false);
1879 iwl_mvm_power_vif_assoc(mvm, vif);
1880 if (vif->p2p) {
1881 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1882 iwl_mvm_update_smps(mvm, vif,
1883 IWL_MVM_SMPS_REQ_PROT,
1884 IEEE80211_SMPS_DYNAMIC);
1885 }
1886 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1887 /*
1888 * If update fails - SF might be running in associated
1889 * mode while disassociated - which is forbidden.
1890 */
1891 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1892 "Failed to update SF upon disassociation\n");
1893
1894 /* remove AP station now that the MAC is unassoc */
1895 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1896 if (ret)
1897 IWL_ERR(mvm, "failed to remove AP station\n");
1898
1899 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1900 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1901 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1902 /* remove quota for this interface */
1903 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1904 if (ret)
1905 IWL_ERR(mvm, "failed to update quotas\n");
1906
1907 if (vif->p2p)
1908 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1909
1910 /* this will take the cleared BSSID from bss_conf */
1911 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1912 if (ret)
1913 IWL_ERR(mvm,
1914 "failed to update MAC %pM (clear after unassoc)\n",
1915 vif->addr);
1916 }
1917
1918 /*
1919 * The firmware tracks the MU-MIMO group on its own.
1920 * However, on HW restart we should restore this data.
1921 */
1922 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1923 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
1924 ret = iwl_mvm_update_mu_groups(mvm, vif);
1925 if (ret)
1926 IWL_ERR(mvm,
1927 "failed to update VHT MU_MIMO groups\n");
1928 }
1929
1930 iwl_mvm_recalc_multicast(mvm);
1931 iwl_mvm_configure_bcast_filter(mvm);
1932
1933 /* reset rssi values */
1934 mvmvif->bf_data.ave_beacon_signal = 0;
1935
1936 iwl_mvm_bt_coex_vif_change(mvm);
1937 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1938 IEEE80211_SMPS_AUTOMATIC);
1939 if (fw_has_capa(&mvm->fw->ucode_capa,
1940 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1941 iwl_mvm_config_scan(mvm);
1942 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1943 /*
1944 * We received a beacon _after_ association so
1945 * remove the session protection.
1946 */
1947 iwl_mvm_remove_time_event(mvm, mvmvif,
1948 &mvmvif->time_event_data);
1949 }
1950
1951 if (changes & BSS_CHANGED_BEACON_INFO) {
1952 iwl_mvm_sf_update(mvm, vif, false);
1953 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1954 }
1955
1956 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
1957 /*
1958 * Send power command on every beacon change,
1959 * because we may have not enabled beacon abort yet.
1960 */
1961 BSS_CHANGED_BEACON_INFO)) {
1962 ret = iwl_mvm_power_update_mac(mvm);
1963 if (ret)
1964 IWL_ERR(mvm, "failed to update power mode\n");
1965 }
1966
1967 if (changes & BSS_CHANGED_TXPOWER) {
1968 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1969 bss_conf->txpower);
1970 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1971 }
1972
1973 if (changes & BSS_CHANGED_CQM) {
1974 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1975 /* reset cqm events tracking */
1976 mvmvif->bf_data.last_cqm_event = 0;
1977 if (mvmvif->bf_data.bf_enabled) {
1978 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1979 if (ret)
1980 IWL_ERR(mvm,
1981 "failed to update CQM thresholds\n");
1982 }
1983 }
1984
1985 if (changes & BSS_CHANGED_ARP_FILTER) {
1986 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1987 iwl_mvm_configure_bcast_filter(mvm);
1988 }
1989 }
1990
1991 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1992 struct ieee80211_vif *vif)
1993 {
1994 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1995 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1996 int ret;
1997
1998 /*
1999 * iwl_mvm_mac_ctxt_add() might read directly from the device
2000 * (the system time), so make sure it is available.
2001 */
2002 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2003 if (ret)
2004 return ret;
2005
2006 mutex_lock(&mvm->mutex);
2007
2008 /* Send the beacon template */
2009 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2010 if (ret)
2011 goto out_unlock;
2012
2013 /*
2014 * Re-calculate the tsf id, as the master-slave relations depend on the
2015 * beacon interval, which was not known when the AP interface was added.
2016 */
2017 if (vif->type == NL80211_IFTYPE_AP)
2018 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2019
2020 mvmvif->ap_assoc_sta_count = 0;
2021
2022 /* Add the mac context */
2023 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2024 if (ret)
2025 goto out_unlock;
2026
2027 /* Perform the binding */
2028 ret = iwl_mvm_binding_add_vif(mvm, vif);
2029 if (ret)
2030 goto out_remove;
2031
2032 /* Send the bcast station. At this stage the TBTT and DTIM time events
2033 * are added and applied to the scheduler */
2034 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2035 if (ret)
2036 goto out_unbind;
2037
2038 /* must be set before quota calculations */
2039 mvmvif->ap_ibss_active = true;
2040
2041 /* power updated needs to be done before quotas */
2042 iwl_mvm_power_update_mac(mvm);
2043
2044 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2045 if (ret)
2046 goto out_quota_failed;
2047
2048 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2049 if (vif->p2p && mvm->p2p_device_vif)
2050 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2051
2052 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2053
2054 iwl_mvm_bt_coex_vif_change(mvm);
2055
2056 /* we don't support TDLS during DCM */
2057 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2058 iwl_mvm_teardown_tdls_peers(mvm);
2059
2060 goto out_unlock;
2061
2062 out_quota_failed:
2063 iwl_mvm_power_update_mac(mvm);
2064 mvmvif->ap_ibss_active = false;
2065 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2066 out_unbind:
2067 iwl_mvm_binding_remove_vif(mvm, vif);
2068 out_remove:
2069 iwl_mvm_mac_ctxt_remove(mvm, vif);
2070 out_unlock:
2071 mutex_unlock(&mvm->mutex);
2072 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2073 return ret;
2074 }
2075
2076 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2077 struct ieee80211_vif *vif)
2078 {
2079 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2080 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2081
2082 iwl_mvm_prepare_mac_removal(mvm, vif);
2083
2084 mutex_lock(&mvm->mutex);
2085
2086 /* Handle AP stop while in CSA */
2087 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2088 iwl_mvm_remove_time_event(mvm, mvmvif,
2089 &mvmvif->time_event_data);
2090 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2091 mvmvif->csa_countdown = false;
2092 }
2093
2094 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2095 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2096 mvm->csa_tx_block_bcn_timeout = 0;
2097 }
2098
2099 mvmvif->ap_ibss_active = false;
2100 mvm->ap_last_beacon_gp2 = 0;
2101
2102 iwl_mvm_bt_coex_vif_change(mvm);
2103
2104 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2105
2106 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2107 if (vif->p2p && mvm->p2p_device_vif)
2108 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2109
2110 iwl_mvm_update_quotas(mvm, false, NULL);
2111 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2112 iwl_mvm_binding_remove_vif(mvm, vif);
2113
2114 iwl_mvm_power_update_mac(mvm);
2115
2116 iwl_mvm_mac_ctxt_remove(mvm, vif);
2117
2118 mutex_unlock(&mvm->mutex);
2119 }
2120
2121 static void
2122 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2123 struct ieee80211_vif *vif,
2124 struct ieee80211_bss_conf *bss_conf,
2125 u32 changes)
2126 {
2127 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2128
2129 /* Changes will be applied when the AP/IBSS is started */
2130 if (!mvmvif->ap_ibss_active)
2131 return;
2132
2133 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2134 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2135 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2136 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2137
2138 /* Need to send a new beacon template to the FW */
2139 if (changes & BSS_CHANGED_BEACON &&
2140 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2141 IWL_WARN(mvm, "Failed updating beacon data\n");
2142
2143 if (changes & BSS_CHANGED_TXPOWER) {
2144 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2145 bss_conf->txpower);
2146 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2147 }
2148 }
2149
2150 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2151 struct ieee80211_vif *vif,
2152 struct ieee80211_bss_conf *bss_conf,
2153 u32 changes)
2154 {
2155 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2156
2157 /*
2158 * iwl_mvm_bss_info_changed_station() might call
2159 * iwl_mvm_protect_session(), which reads directly from
2160 * the device (the system time), so make sure it is available.
2161 */
2162 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2163 return;
2164
2165 mutex_lock(&mvm->mutex);
2166
2167 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2168 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2169
2170 switch (vif->type) {
2171 case NL80211_IFTYPE_STATION:
2172 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2173 break;
2174 case NL80211_IFTYPE_AP:
2175 case NL80211_IFTYPE_ADHOC:
2176 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2177 break;
2178 default:
2179 /* shouldn't happen */
2180 WARN_ON_ONCE(1);
2181 }
2182
2183 mutex_unlock(&mvm->mutex);
2184 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2185 }
2186
2187 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2188 struct ieee80211_vif *vif,
2189 struct ieee80211_scan_request *hw_req)
2190 {
2191 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2192 int ret;
2193
2194 if (hw_req->req.n_channels == 0 ||
2195 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2196 return -EINVAL;
2197
2198 mutex_lock(&mvm->mutex);
2199 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2200 mutex_unlock(&mvm->mutex);
2201
2202 return ret;
2203 }
2204
2205 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2206 struct ieee80211_vif *vif)
2207 {
2208 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2209
2210 mutex_lock(&mvm->mutex);
2211
2212 /* Due to a race condition, it's possible that mac80211 asks
2213 * us to stop a hw_scan when it's already stopped. This can
2214 * happen, for instance, if we stopped the scan ourselves,
2215 * called ieee80211_scan_completed() and the userspace called
2216 * cancel scan scan before ieee80211_scan_work() could run.
2217 * To handle that, simply return if the scan is not running.
2218 */
2219 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2220 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2221
2222 mutex_unlock(&mvm->mutex);
2223 }
2224
2225 static void
2226 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2227 struct ieee80211_sta *sta, u16 tids,
2228 int num_frames,
2229 enum ieee80211_frame_release_type reason,
2230 bool more_data)
2231 {
2232 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2233
2234 /* Called when we need to transmit (a) frame(s) from mac80211 */
2235
2236 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2237 tids, more_data, false);
2238 }
2239
2240 static void
2241 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2242 struct ieee80211_sta *sta, u16 tids,
2243 int num_frames,
2244 enum ieee80211_frame_release_type reason,
2245 bool more_data)
2246 {
2247 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2248
2249 /* Called when we need to transmit (a) frame(s) from agg queue */
2250
2251 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2252 tids, more_data, true);
2253 }
2254
2255 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2256 struct ieee80211_vif *vif,
2257 enum sta_notify_cmd cmd,
2258 struct ieee80211_sta *sta)
2259 {
2260 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2261 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2262 unsigned long txqs = 0, tids = 0;
2263 int tid;
2264
2265 spin_lock_bh(&mvmsta->lock);
2266 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2267 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2268
2269 if (tid_data->state != IWL_AGG_ON &&
2270 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2271 continue;
2272
2273 __set_bit(tid_data->txq_id, &txqs);
2274
2275 if (iwl_mvm_tid_queued(tid_data) == 0)
2276 continue;
2277
2278 __set_bit(tid, &tids);
2279 }
2280
2281 switch (cmd) {
2282 case STA_NOTIFY_SLEEP:
2283 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2284 ieee80211_sta_block_awake(hw, sta, true);
2285
2286 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2287 ieee80211_sta_set_buffered(sta, tid, true);
2288
2289 if (txqs)
2290 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2291 /*
2292 * The fw updates the STA to be asleep. Tx packets on the Tx
2293 * queues to this station will not be transmitted. The fw will
2294 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2295 */
2296 break;
2297 case STA_NOTIFY_AWAKE:
2298 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2299 break;
2300
2301 if (txqs)
2302 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2303 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2304 break;
2305 default:
2306 break;
2307 }
2308 spin_unlock_bh(&mvmsta->lock);
2309 }
2310
2311 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2312 struct ieee80211_vif *vif,
2313 struct ieee80211_sta *sta)
2314 {
2315 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2316 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2317
2318 /*
2319 * This is called before mac80211 does RCU synchronisation,
2320 * so here we already invalidate our internal RCU-protected
2321 * station pointer. The rest of the code will thus no longer
2322 * be able to find the station this way, and we don't rely
2323 * on further RCU synchronisation after the sta_state()
2324 * callback deleted the station.
2325 */
2326 mutex_lock(&mvm->mutex);
2327 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2328 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2329 ERR_PTR(-ENOENT));
2330
2331 mutex_unlock(&mvm->mutex);
2332 }
2333
2334 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2335 const u8 *bssid)
2336 {
2337 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2338 return;
2339
2340 if (vif->p2p && !iwl_mvm_is_p2p_standalone_uapsd_supported(mvm)) {
2341 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2342 return;
2343 }
2344
2345 if (iwlwifi_mod_params.uapsd_disable) {
2346 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2347 return;
2348 }
2349
2350 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2351 }
2352
2353 static void
2354 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2355 struct ieee80211_vif *vif, u8 *peer_addr,
2356 enum nl80211_tdls_operation action)
2357 {
2358 struct iwl_fw_dbg_trigger_tlv *trig;
2359 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2360
2361 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2362 return;
2363
2364 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2365 tdls_trig = (void *)trig->data;
2366 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2367 return;
2368
2369 if (!(tdls_trig->action_bitmap & BIT(action)))
2370 return;
2371
2372 if (tdls_trig->peer_mode &&
2373 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2374 return;
2375
2376 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2377 "TDLS event occurred, peer %pM, action %d",
2378 peer_addr, action);
2379 }
2380
2381 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2382 struct ieee80211_vif *vif,
2383 struct ieee80211_sta *sta,
2384 enum ieee80211_sta_state old_state,
2385 enum ieee80211_sta_state new_state)
2386 {
2387 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2388 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2389 int ret;
2390
2391 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2392 sta->addr, old_state, new_state);
2393
2394 /* this would be a mac80211 bug ... but don't crash */
2395 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2396 return -EINVAL;
2397
2398 /* if a STA is being removed, reuse its ID */
2399 flush_work(&mvm->sta_drained_wk);
2400
2401 mutex_lock(&mvm->mutex);
2402 if (old_state == IEEE80211_STA_NOTEXIST &&
2403 new_state == IEEE80211_STA_NONE) {
2404 /*
2405 * Firmware bug - it'll crash if the beacon interval is less
2406 * than 16. We can't avoid connecting at all, so refuse the
2407 * station state change, this will cause mac80211 to abandon
2408 * attempts to connect to this AP, and eventually wpa_s will
2409 * blacklist the AP...
2410 */
2411 if (vif->type == NL80211_IFTYPE_STATION &&
2412 vif->bss_conf.beacon_int < 16) {
2413 IWL_ERR(mvm,
2414 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2415 sta->addr, vif->bss_conf.beacon_int);
2416 ret = -EINVAL;
2417 goto out_unlock;
2418 }
2419
2420 if (sta->tdls &&
2421 (vif->p2p ||
2422 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2423 IWL_MVM_TDLS_STA_COUNT ||
2424 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2425 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2426 ret = -EBUSY;
2427 goto out_unlock;
2428 }
2429
2430 ret = iwl_mvm_add_sta(mvm, vif, sta);
2431 if (sta->tdls && ret == 0) {
2432 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2433 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2434 NL80211_TDLS_SETUP);
2435 }
2436 } else if (old_state == IEEE80211_STA_NONE &&
2437 new_state == IEEE80211_STA_AUTH) {
2438 /*
2439 * EBS may be disabled due to previous failures reported by FW.
2440 * Reset EBS status here assuming environment has been changed.
2441 */
2442 mvm->last_ebs_successful = true;
2443 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2444 ret = 0;
2445 } else if (old_state == IEEE80211_STA_AUTH &&
2446 new_state == IEEE80211_STA_ASSOC) {
2447 if (vif->type == NL80211_IFTYPE_AP) {
2448 mvmvif->ap_assoc_sta_count++;
2449 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2450 }
2451 ret = iwl_mvm_update_sta(mvm, vif, sta);
2452 if (ret == 0)
2453 iwl_mvm_rs_rate_init(mvm, sta,
2454 mvmvif->phy_ctxt->channel->band,
2455 true);
2456 } else if (old_state == IEEE80211_STA_ASSOC &&
2457 new_state == IEEE80211_STA_AUTHORIZED) {
2458
2459 /* we don't support TDLS during DCM */
2460 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2461 iwl_mvm_teardown_tdls_peers(mvm);
2462
2463 if (sta->tdls)
2464 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2465 NL80211_TDLS_ENABLE_LINK);
2466
2467 /* enable beacon filtering */
2468 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2469 ret = 0;
2470 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2471 new_state == IEEE80211_STA_ASSOC) {
2472 /* disable beacon filtering */
2473 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2474 ret = 0;
2475 } else if (old_state == IEEE80211_STA_ASSOC &&
2476 new_state == IEEE80211_STA_AUTH) {
2477 if (vif->type == NL80211_IFTYPE_AP) {
2478 mvmvif->ap_assoc_sta_count--;
2479 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2480 }
2481 ret = 0;
2482 } else if (old_state == IEEE80211_STA_AUTH &&
2483 new_state == IEEE80211_STA_NONE) {
2484 ret = 0;
2485 } else if (old_state == IEEE80211_STA_NONE &&
2486 new_state == IEEE80211_STA_NOTEXIST) {
2487 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2488 if (sta->tdls) {
2489 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2490 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2491 NL80211_TDLS_DISABLE_LINK);
2492 }
2493 } else {
2494 ret = -EIO;
2495 }
2496 out_unlock:
2497 mutex_unlock(&mvm->mutex);
2498
2499 if (sta->tdls && ret == 0) {
2500 if (old_state == IEEE80211_STA_NOTEXIST &&
2501 new_state == IEEE80211_STA_NONE)
2502 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2503 else if (old_state == IEEE80211_STA_NONE &&
2504 new_state == IEEE80211_STA_NOTEXIST)
2505 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2506 }
2507
2508 return ret;
2509 }
2510
2511 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2512 {
2513 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2514
2515 mvm->rts_threshold = value;
2516
2517 return 0;
2518 }
2519
2520 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2521 struct ieee80211_vif *vif,
2522 struct ieee80211_sta *sta, u32 changed)
2523 {
2524 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2525
2526 if (vif->type == NL80211_IFTYPE_STATION &&
2527 changed & IEEE80211_RC_NSS_CHANGED)
2528 iwl_mvm_sf_update(mvm, vif, false);
2529 }
2530
2531 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2532 struct ieee80211_vif *vif, u16 ac,
2533 const struct ieee80211_tx_queue_params *params)
2534 {
2535 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2536 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2537
2538 mvmvif->queue_params[ac] = *params;
2539
2540 /*
2541 * No need to update right away, we'll get BSS_CHANGED_QOS
2542 * The exception is P2P_DEVICE interface which needs immediate update.
2543 */
2544 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2545 int ret;
2546
2547 mutex_lock(&mvm->mutex);
2548 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2549 mutex_unlock(&mvm->mutex);
2550 return ret;
2551 }
2552 return 0;
2553 }
2554
2555 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2556 struct ieee80211_vif *vif)
2557 {
2558 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2559 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2560 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2561
2562 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2563 return;
2564
2565 /*
2566 * iwl_mvm_protect_session() reads directly from the device
2567 * (the system time), so make sure it is available.
2568 */
2569 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2570 return;
2571
2572 mutex_lock(&mvm->mutex);
2573 /* Try really hard to protect the session and hear a beacon */
2574 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2575 mutex_unlock(&mvm->mutex);
2576
2577 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2578 }
2579
2580 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2581 struct ieee80211_vif *vif,
2582 struct cfg80211_sched_scan_request *req,
2583 struct ieee80211_scan_ies *ies)
2584 {
2585 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2586
2587 int ret;
2588
2589 mutex_lock(&mvm->mutex);
2590
2591 if (!vif->bss_conf.idle) {
2592 ret = -EBUSY;
2593 goto out;
2594 }
2595
2596 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2597
2598 out:
2599 mutex_unlock(&mvm->mutex);
2600 return ret;
2601 }
2602
2603 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2604 struct ieee80211_vif *vif)
2605 {
2606 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2607 int ret;
2608
2609 mutex_lock(&mvm->mutex);
2610
2611 /* Due to a race condition, it's possible that mac80211 asks
2612 * us to stop a sched_scan when it's already stopped. This
2613 * can happen, for instance, if we stopped the scan ourselves,
2614 * called ieee80211_sched_scan_stopped() and the userspace called
2615 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2616 * could run. To handle this, simply return if the scan is
2617 * not running.
2618 */
2619 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2620 mutex_unlock(&mvm->mutex);
2621 return 0;
2622 }
2623
2624 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2625 mutex_unlock(&mvm->mutex);
2626 iwl_mvm_wait_for_async_handlers(mvm);
2627
2628 return ret;
2629 }
2630
2631 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2632 enum set_key_cmd cmd,
2633 struct ieee80211_vif *vif,
2634 struct ieee80211_sta *sta,
2635 struct ieee80211_key_conf *key)
2636 {
2637 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2638 struct iwl_mvm_sta *mvmsta;
2639 struct iwl_mvm_key_pn *ptk_pn;
2640 int keyidx = key->keyidx;
2641 int ret;
2642 u8 key_offset;
2643
2644 if (iwlwifi_mod_params.sw_crypto) {
2645 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2646 return -EOPNOTSUPP;
2647 }
2648
2649 switch (key->cipher) {
2650 case WLAN_CIPHER_SUITE_TKIP:
2651 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2652 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2653 break;
2654 case WLAN_CIPHER_SUITE_CCMP:
2655 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2656 break;
2657 case WLAN_CIPHER_SUITE_AES_CMAC:
2658 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2659 break;
2660 case WLAN_CIPHER_SUITE_WEP40:
2661 case WLAN_CIPHER_SUITE_WEP104:
2662 /* For non-client mode, only use WEP keys for TX as we probably
2663 * don't have a station yet anyway and would then have to keep
2664 * track of the keys, linking them to each of the clients/peers
2665 * as they appear. For now, don't do that, for performance WEP
2666 * offload doesn't really matter much, but we need it for some
2667 * other offload features in client mode.
2668 */
2669 if (vif->type != NL80211_IFTYPE_STATION)
2670 return 0;
2671 break;
2672 default:
2673 /* currently FW supports only one optional cipher scheme */
2674 if (hw->n_cipher_schemes &&
2675 hw->cipher_schemes->cipher == key->cipher)
2676 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2677 else
2678 return -EOPNOTSUPP;
2679 }
2680
2681 mutex_lock(&mvm->mutex);
2682
2683 switch (cmd) {
2684 case SET_KEY:
2685 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2686 vif->type == NL80211_IFTYPE_AP) && !sta) {
2687 /*
2688 * GTK on AP interface is a TX-only key, return 0;
2689 * on IBSS they're per-station and because we're lazy
2690 * we don't support them for RX, so do the same.
2691 * CMAC in AP/IBSS modes must be done in software.
2692 */
2693 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
2694 ret = -EOPNOTSUPP;
2695 else
2696 ret = 0;
2697 key->hw_key_idx = STA_KEY_IDX_INVALID;
2698 break;
2699 }
2700
2701 /* During FW restart, in order to restore the state as it was,
2702 * don't try to reprogram keys we previously failed for.
2703 */
2704 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2705 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2706 IWL_DEBUG_MAC80211(mvm,
2707 "skip invalid idx key programming during restart\n");
2708 ret = 0;
2709 break;
2710 }
2711
2712 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2713 sta && iwl_mvm_has_new_rx_api(mvm) &&
2714 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2715 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2716 key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2717 struct ieee80211_key_seq seq;
2718 int tid, q;
2719
2720 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2721 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2722 ptk_pn = kzalloc(sizeof(*ptk_pn) +
2723 mvm->trans->num_rx_queues *
2724 sizeof(ptk_pn->q[0]),
2725 GFP_KERNEL);
2726 if (!ptk_pn) {
2727 ret = -ENOMEM;
2728 break;
2729 }
2730
2731 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2732 ieee80211_get_key_rx_seq(key, tid, &seq);
2733 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2734 memcpy(ptk_pn->q[q].pn[tid],
2735 seq.ccmp.pn,
2736 IEEE80211_CCMP_PN_LEN);
2737 }
2738
2739 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2740 }
2741
2742 /* in HW restart reuse the index, otherwise request a new one */
2743 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2744 key_offset = key->hw_key_idx;
2745 else
2746 key_offset = STA_KEY_IDX_INVALID;
2747
2748 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2749 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2750 if (ret) {
2751 IWL_WARN(mvm, "set key failed\n");
2752 /*
2753 * can't add key for RX, but we don't need it
2754 * in the device for TX so still return 0
2755 */
2756 key->hw_key_idx = STA_KEY_IDX_INVALID;
2757 ret = 0;
2758 }
2759
2760 break;
2761 case DISABLE_KEY:
2762 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2763 ret = 0;
2764 break;
2765 }
2766
2767 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2768 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2769 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2770 key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2771 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2772 ptk_pn = rcu_dereference_protected(
2773 mvmsta->ptk_pn[keyidx],
2774 lockdep_is_held(&mvm->mutex));
2775 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2776 if (ptk_pn)
2777 kfree_rcu(ptk_pn, rcu_head);
2778 }
2779
2780 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2781 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2782 break;
2783 default:
2784 ret = -EINVAL;
2785 }
2786
2787 mutex_unlock(&mvm->mutex);
2788 return ret;
2789 }
2790
2791 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2792 struct ieee80211_vif *vif,
2793 struct ieee80211_key_conf *keyconf,
2794 struct ieee80211_sta *sta,
2795 u32 iv32, u16 *phase1key)
2796 {
2797 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2798
2799 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2800 return;
2801
2802 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2803 }
2804
2805
2806 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2807 struct iwl_rx_packet *pkt, void *data)
2808 {
2809 struct iwl_mvm *mvm =
2810 container_of(notif_wait, struct iwl_mvm, notif_wait);
2811 struct iwl_hs20_roc_res *resp;
2812 int resp_len = iwl_rx_packet_payload_len(pkt);
2813 struct iwl_mvm_time_event_data *te_data = data;
2814
2815 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2816 return true;
2817
2818 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2819 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2820 return true;
2821 }
2822
2823 resp = (void *)pkt->data;
2824
2825 IWL_DEBUG_TE(mvm,
2826 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2827 resp->status, resp->event_unique_id);
2828
2829 te_data->uid = le32_to_cpu(resp->event_unique_id);
2830 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2831 te_data->uid);
2832
2833 spin_lock_bh(&mvm->time_event_lock);
2834 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2835 spin_unlock_bh(&mvm->time_event_lock);
2836
2837 return true;
2838 }
2839
2840 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2841 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2842 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2843 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2844 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2845 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2846 struct ieee80211_channel *channel,
2847 struct ieee80211_vif *vif,
2848 int duration)
2849 {
2850 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2851 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2852 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2853 static const u16 time_event_response[] = { HOT_SPOT_CMD };
2854 struct iwl_notification_wait wait_time_event;
2855 u32 dtim_interval = vif->bss_conf.dtim_period *
2856 vif->bss_conf.beacon_int;
2857 u32 req_dur, delay;
2858 struct iwl_hs20_roc_req aux_roc_req = {
2859 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2860 .id_and_color =
2861 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2862 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2863 /* Set the channel info data */
2864 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2865 PHY_BAND_24 : PHY_BAND_5,
2866 .channel_info.channel = channel->hw_value,
2867 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2868 /* Set the time and duration */
2869 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2870 };
2871
2872 delay = AUX_ROC_MIN_DELAY;
2873 req_dur = MSEC_TO_TU(duration);
2874
2875 /*
2876 * If we are associated we want the delay time to be at least one
2877 * dtim interval so that the FW can wait until after the DTIM and
2878 * then start the time event, this will potentially allow us to
2879 * remain off-channel for the max duration.
2880 * Since we want to use almost a whole dtim interval we would also
2881 * like the delay to be for 2-3 dtim intervals, in case there are
2882 * other time events with higher priority.
2883 */
2884 if (vif->bss_conf.assoc) {
2885 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2886 /* We cannot remain off-channel longer than the DTIM interval */
2887 if (dtim_interval <= req_dur) {
2888 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2889 if (req_dur <= AUX_ROC_MIN_DURATION)
2890 req_dur = dtim_interval -
2891 AUX_ROC_MIN_SAFETY_BUFFER;
2892 }
2893 }
2894
2895 aux_roc_req.duration = cpu_to_le32(req_dur);
2896 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2897
2898 IWL_DEBUG_TE(mvm,
2899 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2900 channel->hw_value, req_dur, duration, delay,
2901 dtim_interval);
2902 /* Set the node address */
2903 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2904
2905 lockdep_assert_held(&mvm->mutex);
2906
2907 spin_lock_bh(&mvm->time_event_lock);
2908
2909 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2910 spin_unlock_bh(&mvm->time_event_lock);
2911 return -EIO;
2912 }
2913
2914 te_data->vif = vif;
2915 te_data->duration = duration;
2916 te_data->id = HOT_SPOT_CMD;
2917
2918 spin_unlock_bh(&mvm->time_event_lock);
2919
2920 /*
2921 * Use a notification wait, which really just processes the
2922 * command response and doesn't wait for anything, in order
2923 * to be able to process the response and get the UID inside
2924 * the RX path. Using CMD_WANT_SKB doesn't work because it
2925 * stores the buffer and then wakes up this thread, by which
2926 * time another notification (that the time event started)
2927 * might already be processed unsuccessfully.
2928 */
2929 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2930 time_event_response,
2931 ARRAY_SIZE(time_event_response),
2932 iwl_mvm_rx_aux_roc, te_data);
2933
2934 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2935 &aux_roc_req);
2936
2937 if (res) {
2938 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2939 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2940 goto out_clear_te;
2941 }
2942
2943 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2944 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2945 /* should never fail */
2946 WARN_ON_ONCE(res);
2947
2948 if (res) {
2949 out_clear_te:
2950 spin_lock_bh(&mvm->time_event_lock);
2951 iwl_mvm_te_clear_data(mvm, te_data);
2952 spin_unlock_bh(&mvm->time_event_lock);
2953 }
2954
2955 return res;
2956 }
2957
2958 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2959 struct ieee80211_vif *vif,
2960 struct ieee80211_channel *channel,
2961 int duration,
2962 enum ieee80211_roc_type type)
2963 {
2964 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2965 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2966 struct cfg80211_chan_def chandef;
2967 struct iwl_mvm_phy_ctxt *phy_ctxt;
2968 int ret, i;
2969
2970 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2971 duration, type);
2972
2973 flush_work(&mvm->roc_done_wk);
2974
2975 mutex_lock(&mvm->mutex);
2976
2977 switch (vif->type) {
2978 case NL80211_IFTYPE_STATION:
2979 if (fw_has_capa(&mvm->fw->ucode_capa,
2980 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2981 /* Use aux roc framework (HS20) */
2982 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2983 vif, duration);
2984 goto out_unlock;
2985 }
2986 IWL_ERR(mvm, "hotspot not supported\n");
2987 ret = -EINVAL;
2988 goto out_unlock;
2989 case NL80211_IFTYPE_P2P_DEVICE:
2990 /* handle below */
2991 break;
2992 default:
2993 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2994 ret = -EINVAL;
2995 goto out_unlock;
2996 }
2997
2998 for (i = 0; i < NUM_PHY_CTX; i++) {
2999 phy_ctxt = &mvm->phy_ctxts[i];
3000 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3001 continue;
3002
3003 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3004 /*
3005 * Unbind the P2P_DEVICE from the current PHY context,
3006 * and if the PHY context is not used remove it.
3007 */
3008 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3009 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3010 goto out_unlock;
3011
3012 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3013
3014 /* Bind the P2P_DEVICE to the current PHY Context */
3015 mvmvif->phy_ctxt = phy_ctxt;
3016
3017 ret = iwl_mvm_binding_add_vif(mvm, vif);
3018 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3019 goto out_unlock;
3020
3021 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3022 goto schedule_time_event;
3023 }
3024 }
3025
3026 /* Need to update the PHY context only if the ROC channel changed */
3027 if (channel == mvmvif->phy_ctxt->channel)
3028 goto schedule_time_event;
3029
3030 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3031
3032 /*
3033 * Change the PHY context configuration as it is currently referenced
3034 * only by the P2P Device MAC
3035 */
3036 if (mvmvif->phy_ctxt->ref == 1) {
3037 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3038 &chandef, 1, 1);
3039 if (ret)
3040 goto out_unlock;
3041 } else {
3042 /*
3043 * The PHY context is shared with other MACs. Need to remove the
3044 * P2P Device from the binding, allocate an new PHY context and
3045 * create a new binding
3046 */
3047 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3048 if (!phy_ctxt) {
3049 ret = -ENOSPC;
3050 goto out_unlock;
3051 }
3052
3053 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3054 1, 1);
3055 if (ret) {
3056 IWL_ERR(mvm, "Failed to change PHY context\n");
3057 goto out_unlock;
3058 }
3059
3060 /* Unbind the P2P_DEVICE from the current PHY context */
3061 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3062 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3063 goto out_unlock;
3064
3065 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3066
3067 /* Bind the P2P_DEVICE to the new allocated PHY context */
3068 mvmvif->phy_ctxt = phy_ctxt;
3069
3070 ret = iwl_mvm_binding_add_vif(mvm, vif);
3071 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3072 goto out_unlock;
3073
3074 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3075 }
3076
3077 schedule_time_event:
3078 /* Schedule the time events */
3079 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3080
3081 out_unlock:
3082 mutex_unlock(&mvm->mutex);
3083 IWL_DEBUG_MAC80211(mvm, "leave\n");
3084 return ret;
3085 }
3086
3087 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3088 {
3089 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3090
3091 IWL_DEBUG_MAC80211(mvm, "enter\n");
3092
3093 mutex_lock(&mvm->mutex);
3094 iwl_mvm_stop_roc(mvm);
3095 mutex_unlock(&mvm->mutex);
3096
3097 IWL_DEBUG_MAC80211(mvm, "leave\n");
3098 return 0;
3099 }
3100
3101 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3102 struct ieee80211_chanctx_conf *ctx)
3103 {
3104 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3105 struct iwl_mvm_phy_ctxt *phy_ctxt;
3106 int ret;
3107
3108 lockdep_assert_held(&mvm->mutex);
3109
3110 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3111
3112 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3113 if (!phy_ctxt) {
3114 ret = -ENOSPC;
3115 goto out;
3116 }
3117
3118 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3119 ctx->rx_chains_static,
3120 ctx->rx_chains_dynamic);
3121 if (ret) {
3122 IWL_ERR(mvm, "Failed to add PHY context\n");
3123 goto out;
3124 }
3125
3126 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3127 *phy_ctxt_id = phy_ctxt->id;
3128 out:
3129 return ret;
3130 }
3131
3132 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3133 struct ieee80211_chanctx_conf *ctx)
3134 {
3135 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3136 int ret;
3137
3138 mutex_lock(&mvm->mutex);
3139 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3140 mutex_unlock(&mvm->mutex);
3141
3142 return ret;
3143 }
3144
3145 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3146 struct ieee80211_chanctx_conf *ctx)
3147 {
3148 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3149 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3150
3151 lockdep_assert_held(&mvm->mutex);
3152
3153 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3154 }
3155
3156 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3157 struct ieee80211_chanctx_conf *ctx)
3158 {
3159 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3160
3161 mutex_lock(&mvm->mutex);
3162 __iwl_mvm_remove_chanctx(mvm, ctx);
3163 mutex_unlock(&mvm->mutex);
3164 }
3165
3166 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3167 struct ieee80211_chanctx_conf *ctx,
3168 u32 changed)
3169 {
3170 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3171 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3172 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3173
3174 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3175 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3176 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3177 IEEE80211_CHANCTX_CHANGE_RADAR |
3178 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3179 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3180 phy_ctxt->ref, changed))
3181 return;
3182
3183 mutex_lock(&mvm->mutex);
3184 iwl_mvm_bt_coex_vif_change(mvm);
3185 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3186 ctx->rx_chains_static,
3187 ctx->rx_chains_dynamic);
3188 mutex_unlock(&mvm->mutex);
3189 }
3190
3191 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3192 struct ieee80211_vif *vif,
3193 struct ieee80211_chanctx_conf *ctx,
3194 bool switching_chanctx)
3195 {
3196 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3197 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3198 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3199 int ret;
3200
3201 lockdep_assert_held(&mvm->mutex);
3202
3203 mvmvif->phy_ctxt = phy_ctxt;
3204
3205 switch (vif->type) {
3206 case NL80211_IFTYPE_AP:
3207 /* only needed if we're switching chanctx (i.e. during CSA) */
3208 if (switching_chanctx) {
3209 mvmvif->ap_ibss_active = true;
3210 break;
3211 }
3212 case NL80211_IFTYPE_ADHOC:
3213 /*
3214 * The AP binding flow is handled as part of the start_ap flow
3215 * (in bss_info_changed), similarly for IBSS.
3216 */
3217 ret = 0;
3218 goto out;
3219 case NL80211_IFTYPE_STATION:
3220 break;
3221 case NL80211_IFTYPE_MONITOR:
3222 /* always disable PS when a monitor interface is active */
3223 mvmvif->ps_disabled = true;
3224 break;
3225 default:
3226 ret = -EINVAL;
3227 goto out;
3228 }
3229
3230 ret = iwl_mvm_binding_add_vif(mvm, vif);
3231 if (ret)
3232 goto out;
3233
3234 /*
3235 * Power state must be updated before quotas,
3236 * otherwise fw will complain.
3237 */
3238 iwl_mvm_power_update_mac(mvm);
3239
3240 /* Setting the quota at this stage is only required for monitor
3241 * interfaces. For the other types, the bss_info changed flow
3242 * will handle quota settings.
3243 */
3244 if (vif->type == NL80211_IFTYPE_MONITOR) {
3245 mvmvif->monitor_active = true;
3246 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3247 if (ret)
3248 goto out_remove_binding;
3249
3250 ret = iwl_mvm_add_snif_sta(mvm, vif);
3251 if (ret)
3252 goto out_remove_binding;
3253
3254 }
3255
3256 /* Handle binding during CSA */
3257 if (vif->type == NL80211_IFTYPE_AP) {
3258 iwl_mvm_update_quotas(mvm, false, NULL);
3259 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3260 }
3261
3262 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3263 u32 duration = 2 * vif->bss_conf.beacon_int;
3264
3265 /* iwl_mvm_protect_session() reads directly from the
3266 * device (the system time), so make sure it is
3267 * available.
3268 */
3269 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3270 if (ret)
3271 goto out_remove_binding;
3272
3273 /* Protect the session to make sure we hear the first
3274 * beacon on the new channel.
3275 */
3276 iwl_mvm_protect_session(mvm, vif, duration, duration,
3277 vif->bss_conf.beacon_int / 2,
3278 true);
3279
3280 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3281
3282 iwl_mvm_update_quotas(mvm, false, NULL);
3283 }
3284
3285 goto out;
3286
3287 out_remove_binding:
3288 iwl_mvm_binding_remove_vif(mvm, vif);
3289 iwl_mvm_power_update_mac(mvm);
3290 out:
3291 if (ret)
3292 mvmvif->phy_ctxt = NULL;
3293 return ret;
3294 }
3295 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3296 struct ieee80211_vif *vif,
3297 struct ieee80211_chanctx_conf *ctx)
3298 {
3299 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3300 int ret;
3301
3302 mutex_lock(&mvm->mutex);
3303 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3304 mutex_unlock(&mvm->mutex);
3305
3306 return ret;
3307 }
3308
3309 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3310 struct ieee80211_vif *vif,
3311 struct ieee80211_chanctx_conf *ctx,
3312 bool switching_chanctx)
3313 {
3314 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3315 struct ieee80211_vif *disabled_vif = NULL;
3316
3317 lockdep_assert_held(&mvm->mutex);
3318
3319 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3320
3321 switch (vif->type) {
3322 case NL80211_IFTYPE_ADHOC:
3323 goto out;
3324 case NL80211_IFTYPE_MONITOR:
3325 mvmvif->monitor_active = false;
3326 mvmvif->ps_disabled = false;
3327 iwl_mvm_rm_snif_sta(mvm, vif);
3328 break;
3329 case NL80211_IFTYPE_AP:
3330 /* This part is triggered only during CSA */
3331 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3332 goto out;
3333
3334 mvmvif->csa_countdown = false;
3335
3336 /* Set CS bit on all the stations */
3337 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3338
3339 /* Save blocked iface, the timeout is set on the next beacon */
3340 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3341
3342 mvmvif->ap_ibss_active = false;
3343 break;
3344 case NL80211_IFTYPE_STATION:
3345 if (!switching_chanctx)
3346 break;
3347
3348 disabled_vif = vif;
3349
3350 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3351 break;
3352 default:
3353 break;
3354 }
3355
3356 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3357 iwl_mvm_binding_remove_vif(mvm, vif);
3358
3359 out:
3360 mvmvif->phy_ctxt = NULL;
3361 iwl_mvm_power_update_mac(mvm);
3362 }
3363
3364 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3365 struct ieee80211_vif *vif,
3366 struct ieee80211_chanctx_conf *ctx)
3367 {
3368 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3369
3370 mutex_lock(&mvm->mutex);
3371 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3372 mutex_unlock(&mvm->mutex);
3373 }
3374
3375 static int
3376 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3377 struct ieee80211_vif_chanctx_switch *vifs)
3378 {
3379 int ret;
3380
3381 mutex_lock(&mvm->mutex);
3382 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3383 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3384
3385 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3386 if (ret) {
3387 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3388 goto out_reassign;
3389 }
3390
3391 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3392 true);
3393 if (ret) {
3394 IWL_ERR(mvm,
3395 "failed to assign new_ctx during channel switch\n");
3396 goto out_remove;
3397 }
3398
3399 /* we don't support TDLS during DCM - can be caused by channel switch */
3400 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3401 iwl_mvm_teardown_tdls_peers(mvm);
3402
3403 goto out;
3404
3405 out_remove:
3406 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3407
3408 out_reassign:
3409 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3410 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3411 goto out_restart;
3412 }
3413
3414 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3415 true)) {
3416 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3417 goto out_restart;
3418 }
3419
3420 goto out;
3421
3422 out_restart:
3423 /* things keep failing, better restart the hw */
3424 iwl_mvm_nic_restart(mvm, false);
3425
3426 out:
3427 mutex_unlock(&mvm->mutex);
3428
3429 return ret;
3430 }
3431
3432 static int
3433 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3434 struct ieee80211_vif_chanctx_switch *vifs)
3435 {
3436 int ret;
3437
3438 mutex_lock(&mvm->mutex);
3439 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
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_reassign;
3447 }
3448
3449 goto out;
3450
3451 out_reassign:
3452 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3453 true)) {
3454 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3455 goto out_restart;
3456 }
3457
3458 goto out;
3459
3460 out_restart:
3461 /* things keep failing, better restart the hw */
3462 iwl_mvm_nic_restart(mvm, false);
3463
3464 out:
3465 mutex_unlock(&mvm->mutex);
3466
3467 return ret;
3468 }
3469
3470 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3471 struct ieee80211_vif_chanctx_switch *vifs,
3472 int n_vifs,
3473 enum ieee80211_chanctx_switch_mode mode)
3474 {
3475 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3476 int ret;
3477
3478 /* we only support a single-vif right now */
3479 if (n_vifs > 1)
3480 return -EOPNOTSUPP;
3481
3482 switch (mode) {
3483 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3484 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3485 break;
3486 case CHANCTX_SWMODE_REASSIGN_VIF:
3487 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3488 break;
3489 default:
3490 ret = -EOPNOTSUPP;
3491 break;
3492 }
3493
3494 return ret;
3495 }
3496
3497 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3498 struct ieee80211_sta *sta,
3499 bool set)
3500 {
3501 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3502 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3503
3504 if (!mvm_sta || !mvm_sta->vif) {
3505 IWL_ERR(mvm, "Station is not associated to a vif\n");
3506 return -EINVAL;
3507 }
3508
3509 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3510 }
3511
3512 #ifdef CONFIG_NL80211_TESTMODE
3513 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3514 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3515 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3516 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3517 };
3518
3519 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3520 struct ieee80211_vif *vif,
3521 void *data, int len)
3522 {
3523 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3524 int err;
3525 u32 noa_duration;
3526
3527 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3528 if (err)
3529 return err;
3530
3531 if (!tb[IWL_MVM_TM_ATTR_CMD])
3532 return -EINVAL;
3533
3534 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3535 case IWL_MVM_TM_CMD_SET_NOA:
3536 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3537 !vif->bss_conf.enable_beacon ||
3538 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3539 return -EINVAL;
3540
3541 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3542 if (noa_duration >= vif->bss_conf.beacon_int)
3543 return -EINVAL;
3544
3545 mvm->noa_duration = noa_duration;
3546 mvm->noa_vif = vif;
3547
3548 return iwl_mvm_update_quotas(mvm, false, NULL);
3549 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3550 /* must be associated client vif - ignore authorized */
3551 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3552 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3553 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3554 return -EINVAL;
3555
3556 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3557 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3558 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3559 }
3560
3561 return -EOPNOTSUPP;
3562 }
3563
3564 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3565 struct ieee80211_vif *vif,
3566 void *data, int len)
3567 {
3568 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3569 int err;
3570
3571 mutex_lock(&mvm->mutex);
3572 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3573 mutex_unlock(&mvm->mutex);
3574
3575 return err;
3576 }
3577 #endif
3578
3579 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3580 struct ieee80211_vif *vif,
3581 struct ieee80211_channel_switch *chsw)
3582 {
3583 /* By implementing this operation, we prevent mac80211 from
3584 * starting its own channel switch timer, so that we can call
3585 * ieee80211_chswitch_done() ourselves at the right time
3586 * (which is when the absence time event starts).
3587 */
3588
3589 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3590 "dummy channel switch op\n");
3591 }
3592
3593 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3594 struct ieee80211_vif *vif,
3595 struct ieee80211_channel_switch *chsw)
3596 {
3597 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3598 struct ieee80211_vif *csa_vif;
3599 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3600 u32 apply_time;
3601 int ret;
3602
3603 mutex_lock(&mvm->mutex);
3604
3605 mvmvif->csa_failed = false;
3606
3607 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3608 chsw->chandef.center_freq1);
3609
3610 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3611
3612 switch (vif->type) {
3613 case NL80211_IFTYPE_AP:
3614 csa_vif =
3615 rcu_dereference_protected(mvm->csa_vif,
3616 lockdep_is_held(&mvm->mutex));
3617 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3618 "Another CSA is already in progress")) {
3619 ret = -EBUSY;
3620 goto out_unlock;
3621 }
3622
3623 rcu_assign_pointer(mvm->csa_vif, vif);
3624
3625 if (WARN_ONCE(mvmvif->csa_countdown,
3626 "Previous CSA countdown didn't complete")) {
3627 ret = -EBUSY;
3628 goto out_unlock;
3629 }
3630
3631 break;
3632 case NL80211_IFTYPE_STATION:
3633 /* Schedule the time event to a bit before beacon 1,
3634 * to make sure we're in the new channel when the
3635 * GO/AP arrives.
3636 */
3637 apply_time = chsw->device_timestamp +
3638 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3639 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3640
3641 if (chsw->block_tx)
3642 iwl_mvm_csa_client_absent(mvm, vif);
3643
3644 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3645 apply_time);
3646 if (mvmvif->bf_data.bf_enabled) {
3647 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3648 if (ret)
3649 goto out_unlock;
3650 }
3651
3652 break;
3653 default:
3654 break;
3655 }
3656
3657 mvmvif->ps_disabled = true;
3658
3659 ret = iwl_mvm_power_update_ps(mvm);
3660 if (ret)
3661 goto out_unlock;
3662
3663 /* we won't be on this channel any longer */
3664 iwl_mvm_teardown_tdls_peers(mvm);
3665
3666 out_unlock:
3667 mutex_unlock(&mvm->mutex);
3668
3669 return ret;
3670 }
3671
3672 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3673 struct ieee80211_vif *vif)
3674 {
3675 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3676 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3677 int ret;
3678
3679 mutex_lock(&mvm->mutex);
3680
3681 if (mvmvif->csa_failed) {
3682 mvmvif->csa_failed = false;
3683 ret = -EIO;
3684 goto out_unlock;
3685 }
3686
3687 if (vif->type == NL80211_IFTYPE_STATION) {
3688 struct iwl_mvm_sta *mvmsta;
3689
3690 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3691 mvmvif->ap_sta_id);
3692
3693 if (WARN_ON(!mvmsta)) {
3694 ret = -EIO;
3695 goto out_unlock;
3696 }
3697
3698 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3699
3700 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3701
3702 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3703 if (ret)
3704 goto out_unlock;
3705
3706 iwl_mvm_stop_session_protection(mvm, vif);
3707 }
3708
3709 mvmvif->ps_disabled = false;
3710
3711 ret = iwl_mvm_power_update_ps(mvm);
3712
3713 out_unlock:
3714 mutex_unlock(&mvm->mutex);
3715
3716 return ret;
3717 }
3718
3719 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3720 struct ieee80211_vif *vif, u32 queues, bool drop)
3721 {
3722 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3723 struct iwl_mvm_vif *mvmvif;
3724 struct iwl_mvm_sta *mvmsta;
3725 struct ieee80211_sta *sta;
3726 int i;
3727 u32 msk = 0;
3728
3729 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3730 return;
3731
3732 mutex_lock(&mvm->mutex);
3733 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3734
3735 /* flush the AP-station and all TDLS peers */
3736 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3737 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3738 lockdep_is_held(&mvm->mutex));
3739 if (IS_ERR_OR_NULL(sta))
3740 continue;
3741
3742 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3743 if (mvmsta->vif != vif)
3744 continue;
3745
3746 /* make sure only TDLS peers or the AP are flushed */
3747 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3748
3749 msk |= mvmsta->tfd_queue_msk;
3750 }
3751
3752 if (drop) {
3753 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3754 IWL_ERR(mvm, "flush request fail\n");
3755 mutex_unlock(&mvm->mutex);
3756 } else {
3757 mutex_unlock(&mvm->mutex);
3758
3759 /* this can take a while, and we may need/want other operations
3760 * to succeed while doing this, so do it without the mutex held
3761 */
3762 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3763 }
3764 }
3765
3766 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3767 struct survey_info *survey)
3768 {
3769 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3770 int ret;
3771
3772 memset(survey, 0, sizeof(*survey));
3773
3774 /* only support global statistics right now */
3775 if (idx != 0)
3776 return -ENOENT;
3777
3778 if (fw_has_capa(&mvm->fw->ucode_capa,
3779 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3780 return -ENOENT;
3781
3782 mutex_lock(&mvm->mutex);
3783
3784 if (mvm->ucode_loaded) {
3785 ret = iwl_mvm_request_statistics(mvm, false);
3786 if (ret)
3787 goto out;
3788 }
3789
3790 survey->filled = SURVEY_INFO_TIME |
3791 SURVEY_INFO_TIME_RX |
3792 SURVEY_INFO_TIME_TX |
3793 SURVEY_INFO_TIME_SCAN;
3794 survey->time = mvm->accu_radio_stats.on_time_rf +
3795 mvm->radio_stats.on_time_rf;
3796 do_div(survey->time, USEC_PER_MSEC);
3797
3798 survey->time_rx = mvm->accu_radio_stats.rx_time +
3799 mvm->radio_stats.rx_time;
3800 do_div(survey->time_rx, USEC_PER_MSEC);
3801
3802 survey->time_tx = mvm->accu_radio_stats.tx_time +
3803 mvm->radio_stats.tx_time;
3804 do_div(survey->time_tx, USEC_PER_MSEC);
3805
3806 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3807 mvm->radio_stats.on_time_scan;
3808 do_div(survey->time_scan, USEC_PER_MSEC);
3809
3810 ret = 0;
3811 out:
3812 mutex_unlock(&mvm->mutex);
3813 return ret;
3814 }
3815
3816 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3817 struct ieee80211_vif *vif,
3818 struct ieee80211_sta *sta,
3819 struct station_info *sinfo)
3820 {
3821 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3822 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3823 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3824
3825 if (fw_has_capa(&mvm->fw->ucode_capa,
3826 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3827 return;
3828
3829 /* if beacon filtering isn't on mac80211 does it anyway */
3830 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3831 return;
3832
3833 if (!vif->bss_conf.assoc)
3834 return;
3835
3836 mutex_lock(&mvm->mutex);
3837
3838 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3839 goto unlock;
3840
3841 if (iwl_mvm_request_statistics(mvm, false))
3842 goto unlock;
3843
3844 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3845 mvmvif->beacon_stats.accu_num_beacons;
3846 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3847 if (mvmvif->beacon_stats.avg_signal) {
3848 /* firmware only reports a value after RXing a few beacons */
3849 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3850 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3851 }
3852 unlock:
3853 mutex_unlock(&mvm->mutex);
3854 }
3855
3856 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3857 struct ieee80211_vif *vif,
3858 const struct ieee80211_event *event)
3859 {
3860 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
3861 do { \
3862 if ((_cnt) && --(_cnt)) \
3863 break; \
3864 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3865 } while (0)
3866
3867 struct iwl_fw_dbg_trigger_tlv *trig;
3868 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3869
3870 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3871 return;
3872
3873 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3874 trig_mlme = (void *)trig->data;
3875 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3876 return;
3877
3878 if (event->u.mlme.data == ASSOC_EVENT) {
3879 if (event->u.mlme.status == MLME_DENIED)
3880 CHECK_MLME_TRIGGER(mvm, trig, buf,
3881 trig_mlme->stop_assoc_denied,
3882 "DENIED ASSOC: reason %d",
3883 event->u.mlme.reason);
3884 else if (event->u.mlme.status == MLME_TIMEOUT)
3885 CHECK_MLME_TRIGGER(mvm, trig, buf,
3886 trig_mlme->stop_assoc_timeout,
3887 "ASSOC TIMEOUT");
3888 } else if (event->u.mlme.data == AUTH_EVENT) {
3889 if (event->u.mlme.status == MLME_DENIED)
3890 CHECK_MLME_TRIGGER(mvm, trig, buf,
3891 trig_mlme->stop_auth_denied,
3892 "DENIED AUTH: reason %d",
3893 event->u.mlme.reason);
3894 else if (event->u.mlme.status == MLME_TIMEOUT)
3895 CHECK_MLME_TRIGGER(mvm, trig, buf,
3896 trig_mlme->stop_auth_timeout,
3897 "AUTH TIMEOUT");
3898 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3899 CHECK_MLME_TRIGGER(mvm, trig, buf,
3900 trig_mlme->stop_rx_deauth,
3901 "DEAUTH RX %d", event->u.mlme.reason);
3902 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3903 CHECK_MLME_TRIGGER(mvm, trig, buf,
3904 trig_mlme->stop_tx_deauth,
3905 "DEAUTH TX %d", event->u.mlme.reason);
3906 }
3907 #undef CHECK_MLME_TRIGGER
3908 }
3909
3910 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3911 struct ieee80211_vif *vif,
3912 const struct ieee80211_event *event)
3913 {
3914 struct iwl_fw_dbg_trigger_tlv *trig;
3915 struct iwl_fw_dbg_trigger_ba *ba_trig;
3916
3917 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3918 return;
3919
3920 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3921 ba_trig = (void *)trig->data;
3922 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3923 return;
3924
3925 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3926 return;
3927
3928 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3929 "BAR received from %pM, tid %d, ssn %d",
3930 event->u.ba.sta->addr, event->u.ba.tid,
3931 event->u.ba.ssn);
3932 }
3933
3934 static void
3935 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3936 struct ieee80211_vif *vif,
3937 const struct ieee80211_event *event)
3938 {
3939 struct iwl_fw_dbg_trigger_tlv *trig;
3940 struct iwl_fw_dbg_trigger_ba *ba_trig;
3941
3942 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3943 return;
3944
3945 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3946 ba_trig = (void *)trig->data;
3947 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3948 return;
3949
3950 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3951 return;
3952
3953 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3954 "Frame from %pM timed out, tid %d",
3955 event->u.ba.sta->addr, event->u.ba.tid);
3956 }
3957
3958 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3959 struct ieee80211_vif *vif,
3960 const struct ieee80211_event *event)
3961 {
3962 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3963
3964 switch (event->type) {
3965 case MLME_EVENT:
3966 iwl_mvm_event_mlme_callback(mvm, vif, event);
3967 break;
3968 case BAR_RX_EVENT:
3969 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3970 break;
3971 case BA_FRAME_TIMEOUT:
3972 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3973 break;
3974 default:
3975 break;
3976 }
3977 }
3978
3979 const struct ieee80211_ops iwl_mvm_hw_ops = {
3980 .tx = iwl_mvm_mac_tx,
3981 .ampdu_action = iwl_mvm_mac_ampdu_action,
3982 .start = iwl_mvm_mac_start,
3983 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3984 .stop = iwl_mvm_mac_stop,
3985 .add_interface = iwl_mvm_mac_add_interface,
3986 .remove_interface = iwl_mvm_mac_remove_interface,
3987 .config = iwl_mvm_mac_config,
3988 .prepare_multicast = iwl_mvm_prepare_multicast,
3989 .configure_filter = iwl_mvm_configure_filter,
3990 .config_iface_filter = iwl_mvm_config_iface_filter,
3991 .bss_info_changed = iwl_mvm_bss_info_changed,
3992 .hw_scan = iwl_mvm_mac_hw_scan,
3993 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3994 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3995 .sta_state = iwl_mvm_mac_sta_state,
3996 .sta_notify = iwl_mvm_mac_sta_notify,
3997 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3998 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3999 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4000 .sta_rc_update = iwl_mvm_sta_rc_update,
4001 .conf_tx = iwl_mvm_mac_conf_tx,
4002 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4003 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4004 .flush = iwl_mvm_mac_flush,
4005 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4006 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4007 .set_key = iwl_mvm_mac_set_key,
4008 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4009 .remain_on_channel = iwl_mvm_roc,
4010 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4011 .add_chanctx = iwl_mvm_add_chanctx,
4012 .remove_chanctx = iwl_mvm_remove_chanctx,
4013 .change_chanctx = iwl_mvm_change_chanctx,
4014 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4015 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4016 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4017
4018 .start_ap = iwl_mvm_start_ap_ibss,
4019 .stop_ap = iwl_mvm_stop_ap_ibss,
4020 .join_ibss = iwl_mvm_start_ap_ibss,
4021 .leave_ibss = iwl_mvm_stop_ap_ibss,
4022
4023 .set_tim = iwl_mvm_set_tim,
4024
4025 .channel_switch = iwl_mvm_channel_switch,
4026 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4027 .post_channel_switch = iwl_mvm_post_channel_switch,
4028
4029 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4030 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4031 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4032
4033 .event_callback = iwl_mvm_mac_event_callback,
4034
4035 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4036
4037 #ifdef CONFIG_PM_SLEEP
4038 /* look at d3.c */
4039 .suspend = iwl_mvm_suspend,
4040 .resume = iwl_mvm_resume,
4041 .set_wakeup = iwl_mvm_set_wakeup,
4042 .set_rekey_data = iwl_mvm_set_rekey_data,
4043 #if IS_ENABLED(CONFIG_IPV6)
4044 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4045 #endif
4046 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4047 #endif
4048 .get_survey = iwl_mvm_mac_get_survey,
4049 .sta_statistics = iwl_mvm_mac_sta_statistics,
4050 };
Linux kernel - Deliverables
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