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ARM: 8573/1: domain: move {set,get}_domain under config guard
[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 /*
1151 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1152 * won't be called in this case).
1153 * But make sure to cleanup interfaces that have gone down before/during
1154 * HW restart was requested.
1155 */
1156 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1157 ieee80211_iterate_interfaces(mvm->hw, 0,
1158 iwl_mvm_cleanup_iterator, mvm);
1159
1160 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1161 * make sure there's nothing left there and warn if any is found.
1162 */
1163 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1164 int i;
1165
1166 for (i = 0; i < mvm->max_scans; i++) {
1167 if (WARN_ONCE(mvm->scan_uid_status[i],
1168 "UMAC scan UID %d status was not cleaned\n",
1169 i))
1170 mvm->scan_uid_status[i] = 0;
1171 }
1172 }
1173 }
1174
1175 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1176 {
1177 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1178
1179 flush_work(&mvm->d0i3_exit_work);
1180 flush_work(&mvm->async_handlers_wk);
1181 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1182 iwl_mvm_free_fw_dump_desc(mvm);
1183
1184 mutex_lock(&mvm->mutex);
1185 __iwl_mvm_mac_stop(mvm);
1186 mutex_unlock(&mvm->mutex);
1187
1188 /*
1189 * The worker might have been waiting for the mutex, let it run and
1190 * discover that its list is now empty.
1191 */
1192 cancel_work_sync(&mvm->async_handlers_wk);
1193 }
1194
1195 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1196 {
1197 u16 i;
1198
1199 lockdep_assert_held(&mvm->mutex);
1200
1201 for (i = 0; i < NUM_PHY_CTX; i++)
1202 if (!mvm->phy_ctxts[i].ref)
1203 return &mvm->phy_ctxts[i];
1204
1205 IWL_ERR(mvm, "No available PHY context\n");
1206 return NULL;
1207 }
1208
1209 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1210 s16 tx_power)
1211 {
1212 struct iwl_dev_tx_power_cmd cmd = {
1213 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1214 .v2.mac_context_id =
1215 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1216 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1217 };
1218 int len = sizeof(cmd);
1219
1220 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1221 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1222
1223 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1224 len = sizeof(cmd.v2);
1225
1226 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1227 }
1228
1229 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1230 struct ieee80211_vif *vif)
1231 {
1232 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1233 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1234 int ret;
1235
1236 mvmvif->mvm = mvm;
1237
1238 /*
1239 * make sure D0i3 exit is completed, otherwise a target access
1240 * during tx queue configuration could be done when still in
1241 * D0i3 state.
1242 */
1243 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1244 if (ret)
1245 return ret;
1246
1247 /*
1248 * Not much to do here. The stack will not allow interface
1249 * types or combinations that we didn't advertise, so we
1250 * don't really have to check the types.
1251 */
1252
1253 mutex_lock(&mvm->mutex);
1254
1255 /* make sure that beacon statistics don't go backwards with FW reset */
1256 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1257 mvmvif->beacon_stats.accu_num_beacons +=
1258 mvmvif->beacon_stats.num_beacons;
1259
1260 /* Allocate resources for the MAC context, and add it to the fw */
1261 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1262 if (ret)
1263 goto out_unlock;
1264
1265 /* Counting number of interfaces is needed for legacy PM */
1266 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1267 mvm->vif_count++;
1268
1269 /*
1270 * The AP binding flow can be done only after the beacon
1271 * template is configured (which happens only in the mac80211
1272 * start_ap() flow), and adding the broadcast station can happen
1273 * only after the binding.
1274 * In addition, since modifying the MAC before adding a bcast
1275 * station is not allowed by the FW, delay the adding of MAC context to
1276 * the point where we can also add the bcast station.
1277 * In short: there's not much we can do at this point, other than
1278 * allocating resources :)
1279 */
1280 if (vif->type == NL80211_IFTYPE_AP ||
1281 vif->type == NL80211_IFTYPE_ADHOC) {
1282 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1283 if (ret) {
1284 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1285 goto out_release;
1286 }
1287
1288 iwl_mvm_vif_dbgfs_register(mvm, vif);
1289 goto out_unlock;
1290 }
1291
1292 mvmvif->features |= hw->netdev_features;
1293
1294 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1295 if (ret)
1296 goto out_release;
1297
1298 ret = iwl_mvm_power_update_mac(mvm);
1299 if (ret)
1300 goto out_remove_mac;
1301
1302 /* beacon filtering */
1303 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1304 if (ret)
1305 goto out_remove_mac;
1306
1307 if (!mvm->bf_allowed_vif &&
1308 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1309 mvm->bf_allowed_vif = mvmvif;
1310 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1311 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1312 }
1313
1314 /*
1315 * P2P_DEVICE interface does not have a channel context assigned to it,
1316 * so a dedicated PHY context is allocated to it and the corresponding
1317 * MAC context is bound to it at this stage.
1318 */
1319 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1320
1321 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1322 if (!mvmvif->phy_ctxt) {
1323 ret = -ENOSPC;
1324 goto out_free_bf;
1325 }
1326
1327 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1328 ret = iwl_mvm_binding_add_vif(mvm, vif);
1329 if (ret)
1330 goto out_unref_phy;
1331
1332 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1333 if (ret)
1334 goto out_unbind;
1335
1336 /* Save a pointer to p2p device vif, so it can later be used to
1337 * update the p2p device MAC when a GO is started/stopped */
1338 mvm->p2p_device_vif = vif;
1339 }
1340
1341 iwl_mvm_vif_dbgfs_register(mvm, vif);
1342 goto out_unlock;
1343
1344 out_unbind:
1345 iwl_mvm_binding_remove_vif(mvm, vif);
1346 out_unref_phy:
1347 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1348 out_free_bf:
1349 if (mvm->bf_allowed_vif == mvmvif) {
1350 mvm->bf_allowed_vif = NULL;
1351 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1352 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1353 }
1354 out_remove_mac:
1355 mvmvif->phy_ctxt = NULL;
1356 iwl_mvm_mac_ctxt_remove(mvm, vif);
1357 out_release:
1358 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1359 mvm->vif_count--;
1360
1361 iwl_mvm_mac_ctxt_release(mvm, vif);
1362 out_unlock:
1363 mutex_unlock(&mvm->mutex);
1364
1365 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1366
1367 return ret;
1368 }
1369
1370 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1371 struct ieee80211_vif *vif)
1372 {
1373 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1374
1375 if (tfd_msk) {
1376 /*
1377 * mac80211 first removes all the stations of the vif and
1378 * then removes the vif. When it removes a station it also
1379 * flushes the AMPDU session. So by now, all the AMPDU sessions
1380 * of all the stations of this vif are closed, and the queues
1381 * of these AMPDU sessions are properly closed.
1382 * We still need to take care of the shared queues of the vif.
1383 * Flush them here.
1384 */
1385 mutex_lock(&mvm->mutex);
1386 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1387 mutex_unlock(&mvm->mutex);
1388
1389 /*
1390 * There are transports that buffer a few frames in the host.
1391 * For these, the flush above isn't enough since while we were
1392 * flushing, the transport might have sent more frames to the
1393 * device. To solve this, wait here until the transport is
1394 * empty. Technically, this could have replaced the flush
1395 * above, but flush is much faster than draining. So flush
1396 * first, and drain to make sure we have no frames in the
1397 * transport anymore.
1398 * If a station still had frames on the shared queues, it is
1399 * already marked as draining, so to complete the draining, we
1400 * just need to wait until the transport is empty.
1401 */
1402 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1403 }
1404
1405 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1406 /*
1407 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1408 * We assume here that all the packets sent to the OFFCHANNEL
1409 * queue are sent in ROC session.
1410 */
1411 flush_work(&mvm->roc_done_wk);
1412 } else {
1413 /*
1414 * By now, all the AC queues are empty. The AGG queues are
1415 * empty too. We already got all the Tx responses for all the
1416 * packets in the queues. The drain work can have been
1417 * triggered. Flush it.
1418 */
1419 flush_work(&mvm->sta_drained_wk);
1420 }
1421 }
1422
1423 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1424 struct ieee80211_vif *vif)
1425 {
1426 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1427 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1428
1429 iwl_mvm_prepare_mac_removal(mvm, vif);
1430
1431 mutex_lock(&mvm->mutex);
1432
1433 if (mvm->bf_allowed_vif == mvmvif) {
1434 mvm->bf_allowed_vif = NULL;
1435 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1436 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1437 }
1438
1439 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1440
1441 /*
1442 * For AP/GO interface, the tear down of the resources allocated to the
1443 * interface is be handled as part of the stop_ap flow.
1444 */
1445 if (vif->type == NL80211_IFTYPE_AP ||
1446 vif->type == NL80211_IFTYPE_ADHOC) {
1447 #ifdef CONFIG_NL80211_TESTMODE
1448 if (vif == mvm->noa_vif) {
1449 mvm->noa_vif = NULL;
1450 mvm->noa_duration = 0;
1451 }
1452 #endif
1453 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1454 goto out_release;
1455 }
1456
1457 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1458 mvm->p2p_device_vif = NULL;
1459 iwl_mvm_rm_bcast_sta(mvm, vif);
1460 iwl_mvm_binding_remove_vif(mvm, vif);
1461 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1462 mvmvif->phy_ctxt = NULL;
1463 }
1464
1465 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1466 mvm->vif_count--;
1467
1468 iwl_mvm_power_update_mac(mvm);
1469 iwl_mvm_mac_ctxt_remove(mvm, vif);
1470
1471 out_release:
1472 iwl_mvm_mac_ctxt_release(mvm, vif);
1473 mutex_unlock(&mvm->mutex);
1474 }
1475
1476 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1477 {
1478 return 0;
1479 }
1480
1481 struct iwl_mvm_mc_iter_data {
1482 struct iwl_mvm *mvm;
1483 int port_id;
1484 };
1485
1486 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1487 struct ieee80211_vif *vif)
1488 {
1489 struct iwl_mvm_mc_iter_data *data = _data;
1490 struct iwl_mvm *mvm = data->mvm;
1491 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1492 int ret, len;
1493
1494 /* if we don't have free ports, mcast frames will be dropped */
1495 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1496 return;
1497
1498 if (vif->type != NL80211_IFTYPE_STATION ||
1499 !vif->bss_conf.assoc)
1500 return;
1501
1502 cmd->port_id = data->port_id++;
1503 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1504 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1505
1506 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1507 if (ret)
1508 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1509 }
1510
1511 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1512 {
1513 struct iwl_mvm_mc_iter_data iter_data = {
1514 .mvm = mvm,
1515 };
1516
1517 lockdep_assert_held(&mvm->mutex);
1518
1519 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1520 return;
1521
1522 ieee80211_iterate_active_interfaces_atomic(
1523 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1524 iwl_mvm_mc_iface_iterator, &iter_data);
1525 }
1526
1527 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1528 struct netdev_hw_addr_list *mc_list)
1529 {
1530 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1531 struct iwl_mcast_filter_cmd *cmd;
1532 struct netdev_hw_addr *addr;
1533 int addr_count;
1534 bool pass_all;
1535 int len;
1536
1537 addr_count = netdev_hw_addr_list_count(mc_list);
1538 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1539 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1540 if (pass_all)
1541 addr_count = 0;
1542
1543 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1544 cmd = kzalloc(len, GFP_ATOMIC);
1545 if (!cmd)
1546 return 0;
1547
1548 if (pass_all) {
1549 cmd->pass_all = 1;
1550 return (u64)(unsigned long)cmd;
1551 }
1552
1553 netdev_hw_addr_list_for_each(addr, mc_list) {
1554 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1555 cmd->count, addr->addr);
1556 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1557 addr->addr, ETH_ALEN);
1558 cmd->count++;
1559 }
1560
1561 return (u64)(unsigned long)cmd;
1562 }
1563
1564 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1565 unsigned int changed_flags,
1566 unsigned int *total_flags,
1567 u64 multicast)
1568 {
1569 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1570 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1571
1572 mutex_lock(&mvm->mutex);
1573
1574 /* replace previous configuration */
1575 kfree(mvm->mcast_filter_cmd);
1576 mvm->mcast_filter_cmd = cmd;
1577
1578 if (!cmd)
1579 goto out;
1580
1581 iwl_mvm_recalc_multicast(mvm);
1582 out:
1583 mutex_unlock(&mvm->mutex);
1584 *total_flags = 0;
1585 }
1586
1587 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1588 struct ieee80211_vif *vif,
1589 unsigned int filter_flags,
1590 unsigned int changed_flags)
1591 {
1592 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1593
1594 /* We support only filter for probe requests */
1595 if (!(changed_flags & FIF_PROBE_REQ))
1596 return;
1597
1598 /* Supported only for p2p client interfaces */
1599 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1600 !vif->p2p)
1601 return;
1602
1603 mutex_lock(&mvm->mutex);
1604 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1605 mutex_unlock(&mvm->mutex);
1606 }
1607
1608 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1609 struct iwl_bcast_iter_data {
1610 struct iwl_mvm *mvm;
1611 struct iwl_bcast_filter_cmd *cmd;
1612 u8 current_filter;
1613 };
1614
1615 static void
1616 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1617 const struct iwl_fw_bcast_filter *in_filter,
1618 struct iwl_fw_bcast_filter *out_filter)
1619 {
1620 struct iwl_fw_bcast_filter_attr *attr;
1621 int i;
1622
1623 memcpy(out_filter, in_filter, sizeof(*out_filter));
1624
1625 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1626 attr = &out_filter->attrs[i];
1627
1628 if (!attr->mask)
1629 break;
1630
1631 switch (attr->reserved1) {
1632 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1633 if (vif->bss_conf.arp_addr_cnt != 1) {
1634 attr->mask = 0;
1635 continue;
1636 }
1637
1638 attr->val = vif->bss_conf.arp_addr_list[0];
1639 break;
1640 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1641 attr->val = *(__be32 *)&vif->addr[2];
1642 break;
1643 default:
1644 break;
1645 }
1646 attr->reserved1 = 0;
1647 out_filter->num_attrs++;
1648 }
1649 }
1650
1651 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1652 struct ieee80211_vif *vif)
1653 {
1654 struct iwl_bcast_iter_data *data = _data;
1655 struct iwl_mvm *mvm = data->mvm;
1656 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1657 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1658 struct iwl_fw_bcast_mac *bcast_mac;
1659 int i;
1660
1661 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1662 return;
1663
1664 bcast_mac = &cmd->macs[mvmvif->id];
1665
1666 /*
1667 * enable filtering only for associated stations, but not for P2P
1668 * Clients
1669 */
1670 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1671 !vif->bss_conf.assoc)
1672 return;
1673
1674 bcast_mac->default_discard = 1;
1675
1676 /* copy all configured filters */
1677 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1678 /*
1679 * Make sure we don't exceed our filters limit.
1680 * if there is still a valid filter to be configured,
1681 * be on the safe side and just allow bcast for this mac.
1682 */
1683 if (WARN_ON_ONCE(data->current_filter >=
1684 ARRAY_SIZE(cmd->filters))) {
1685 bcast_mac->default_discard = 0;
1686 bcast_mac->attached_filters = 0;
1687 break;
1688 }
1689
1690 iwl_mvm_set_bcast_filter(vif,
1691 &mvm->bcast_filters[i],
1692 &cmd->filters[data->current_filter]);
1693
1694 /* skip current filter if it contains no attributes */
1695 if (!cmd->filters[data->current_filter].num_attrs)
1696 continue;
1697
1698 /* attach the filter to current mac */
1699 bcast_mac->attached_filters |=
1700 cpu_to_le16(BIT(data->current_filter));
1701
1702 data->current_filter++;
1703 }
1704 }
1705
1706 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1707 struct iwl_bcast_filter_cmd *cmd)
1708 {
1709 struct iwl_bcast_iter_data iter_data = {
1710 .mvm = mvm,
1711 .cmd = cmd,
1712 };
1713
1714 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1715 return false;
1716
1717 memset(cmd, 0, sizeof(*cmd));
1718 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1719 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1720
1721 #ifdef CONFIG_IWLWIFI_DEBUGFS
1722 /* use debugfs filters/macs if override is configured */
1723 if (mvm->dbgfs_bcast_filtering.override) {
1724 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1725 sizeof(cmd->filters));
1726 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1727 sizeof(cmd->macs));
1728 return true;
1729 }
1730 #endif
1731
1732 /* if no filters are configured, do nothing */
1733 if (!mvm->bcast_filters)
1734 return false;
1735
1736 /* configure and attach these filters for each associated sta vif */
1737 ieee80211_iterate_active_interfaces(
1738 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1739 iwl_mvm_bcast_filter_iterator, &iter_data);
1740
1741 return true;
1742 }
1743
1744 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1745 {
1746 struct iwl_bcast_filter_cmd cmd;
1747
1748 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1749 return 0;
1750
1751 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1752 return 0;
1753
1754 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1755 sizeof(cmd), &cmd);
1756 }
1757 #else
1758 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1759 {
1760 return 0;
1761 }
1762 #endif
1763
1764 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1765 struct ieee80211_vif *vif)
1766 {
1767 struct iwl_mu_group_mgmt_cmd cmd = {};
1768
1769 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1770 WLAN_MEMBERSHIP_LEN);
1771 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1772 WLAN_USER_POSITION_LEN);
1773
1774 return iwl_mvm_send_cmd_pdu(mvm,
1775 WIDE_ID(DATA_PATH_GROUP,
1776 UPDATE_MU_GROUPS_CMD),
1777 0, sizeof(cmd), &cmd);
1778 }
1779
1780 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1781 struct ieee80211_vif *vif)
1782 {
1783 if (vif->mu_mimo_owner) {
1784 struct iwl_mu_group_mgmt_notif *notif = _data;
1785
1786 /*
1787 * MU-MIMO Group Id action frame is little endian. We treat
1788 * the data received from firmware as if it came from the
1789 * action frame, so no conversion is needed.
1790 */
1791 ieee80211_update_mu_groups(vif,
1792 (u8 *)&notif->membership_status,
1793 (u8 *)&notif->user_position);
1794 }
1795 }
1796
1797 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1798 struct iwl_rx_cmd_buffer *rxb)
1799 {
1800 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1801 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1802
1803 ieee80211_iterate_active_interfaces_atomic(
1804 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1805 iwl_mvm_mu_mimo_iface_iterator, notif);
1806 }
1807
1808 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1809 struct ieee80211_vif *vif,
1810 struct ieee80211_bss_conf *bss_conf,
1811 u32 changes)
1812 {
1813 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1814 int ret;
1815
1816 /*
1817 * Re-calculate the tsf id, as the master-slave relations depend on the
1818 * beacon interval, which was not known when the station interface was
1819 * added.
1820 */
1821 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1822 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1823
1824 /*
1825 * If we're not associated yet, take the (new) BSSID before associating
1826 * so the firmware knows. If we're already associated, then use the old
1827 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1828 * branch for disassociation below.
1829 */
1830 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1831 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1832
1833 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1834 if (ret)
1835 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1836
1837 /* after sending it once, adopt mac80211 data */
1838 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1839 mvmvif->associated = bss_conf->assoc;
1840
1841 if (changes & BSS_CHANGED_ASSOC) {
1842 if (bss_conf->assoc) {
1843 /* clear statistics to get clean beacon counter */
1844 iwl_mvm_request_statistics(mvm, true);
1845 memset(&mvmvif->beacon_stats, 0,
1846 sizeof(mvmvif->beacon_stats));
1847
1848 /* add quota for this interface */
1849 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1850 if (ret) {
1851 IWL_ERR(mvm, "failed to update quotas\n");
1852 return;
1853 }
1854
1855 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1856 &mvm->status)) {
1857 /*
1858 * If we're restarting then the firmware will
1859 * obviously have lost synchronisation with
1860 * the AP. It will attempt to synchronise by
1861 * itself, but we can make it more reliable by
1862 * scheduling a session protection time event.
1863 *
1864 * The firmware needs to receive a beacon to
1865 * catch up with synchronisation, use 110% of
1866 * the beacon interval.
1867 *
1868 * Set a large maximum delay to allow for more
1869 * than a single interface.
1870 */
1871 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1872 iwl_mvm_protect_session(mvm, vif, dur, dur,
1873 5 * dur, false);
1874 }
1875
1876 iwl_mvm_sf_update(mvm, vif, false);
1877 iwl_mvm_power_vif_assoc(mvm, vif);
1878 if (vif->p2p) {
1879 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1880 iwl_mvm_update_smps(mvm, vif,
1881 IWL_MVM_SMPS_REQ_PROT,
1882 IEEE80211_SMPS_DYNAMIC);
1883 }
1884 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1885 /*
1886 * If update fails - SF might be running in associated
1887 * mode while disassociated - which is forbidden.
1888 */
1889 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1890 "Failed to update SF upon disassociation\n");
1891
1892 /* remove AP station now that the MAC is unassoc */
1893 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1894 if (ret)
1895 IWL_ERR(mvm, "failed to remove AP station\n");
1896
1897 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1898 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1899 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1900 /* remove quota for this interface */
1901 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1902 if (ret)
1903 IWL_ERR(mvm, "failed to update quotas\n");
1904
1905 if (vif->p2p)
1906 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1907
1908 /* this will take the cleared BSSID from bss_conf */
1909 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1910 if (ret)
1911 IWL_ERR(mvm,
1912 "failed to update MAC %pM (clear after unassoc)\n",
1913 vif->addr);
1914 }
1915
1916 /*
1917 * The firmware tracks the MU-MIMO group on its own.
1918 * However, on HW restart we should restore this data.
1919 */
1920 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1921 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
1922 ret = iwl_mvm_update_mu_groups(mvm, vif);
1923 if (ret)
1924 IWL_ERR(mvm,
1925 "failed to update VHT MU_MIMO groups\n");
1926 }
1927
1928 iwl_mvm_recalc_multicast(mvm);
1929 iwl_mvm_configure_bcast_filter(mvm);
1930
1931 /* reset rssi values */
1932 mvmvif->bf_data.ave_beacon_signal = 0;
1933
1934 iwl_mvm_bt_coex_vif_change(mvm);
1935 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1936 IEEE80211_SMPS_AUTOMATIC);
1937 if (fw_has_capa(&mvm->fw->ucode_capa,
1938 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1939 iwl_mvm_config_scan(mvm);
1940 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1941 /*
1942 * We received a beacon _after_ association so
1943 * remove the session protection.
1944 */
1945 iwl_mvm_remove_time_event(mvm, mvmvif,
1946 &mvmvif->time_event_data);
1947 }
1948
1949 if (changes & BSS_CHANGED_BEACON_INFO) {
1950 iwl_mvm_sf_update(mvm, vif, false);
1951 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1952 }
1953
1954 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
1955 /*
1956 * Send power command on every beacon change,
1957 * because we may have not enabled beacon abort yet.
1958 */
1959 BSS_CHANGED_BEACON_INFO)) {
1960 ret = iwl_mvm_power_update_mac(mvm);
1961 if (ret)
1962 IWL_ERR(mvm, "failed to update power mode\n");
1963 }
1964
1965 if (changes & BSS_CHANGED_TXPOWER) {
1966 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1967 bss_conf->txpower);
1968 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1969 }
1970
1971 if (changes & BSS_CHANGED_CQM) {
1972 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1973 /* reset cqm events tracking */
1974 mvmvif->bf_data.last_cqm_event = 0;
1975 if (mvmvif->bf_data.bf_enabled) {
1976 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1977 if (ret)
1978 IWL_ERR(mvm,
1979 "failed to update CQM thresholds\n");
1980 }
1981 }
1982
1983 if (changes & BSS_CHANGED_ARP_FILTER) {
1984 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1985 iwl_mvm_configure_bcast_filter(mvm);
1986 }
1987 }
1988
1989 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1990 struct ieee80211_vif *vif)
1991 {
1992 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1993 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1994 int ret;
1995
1996 /*
1997 * iwl_mvm_mac_ctxt_add() might read directly from the device
1998 * (the system time), so make sure it is available.
1999 */
2000 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2001 if (ret)
2002 return ret;
2003
2004 mutex_lock(&mvm->mutex);
2005
2006 /* Send the beacon template */
2007 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2008 if (ret)
2009 goto out_unlock;
2010
2011 /*
2012 * Re-calculate the tsf id, as the master-slave relations depend on the
2013 * beacon interval, which was not known when the AP interface was added.
2014 */
2015 if (vif->type == NL80211_IFTYPE_AP)
2016 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2017
2018 mvmvif->ap_assoc_sta_count = 0;
2019
2020 /* Add the mac context */
2021 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2022 if (ret)
2023 goto out_unlock;
2024
2025 /* Perform the binding */
2026 ret = iwl_mvm_binding_add_vif(mvm, vif);
2027 if (ret)
2028 goto out_remove;
2029
2030 /* Send the bcast station. At this stage the TBTT and DTIM time events
2031 * are added and applied to the scheduler */
2032 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2033 if (ret)
2034 goto out_unbind;
2035
2036 /* must be set before quota calculations */
2037 mvmvif->ap_ibss_active = true;
2038
2039 /* power updated needs to be done before quotas */
2040 iwl_mvm_power_update_mac(mvm);
2041
2042 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2043 if (ret)
2044 goto out_quota_failed;
2045
2046 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2047 if (vif->p2p && mvm->p2p_device_vif)
2048 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2049
2050 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2051
2052 iwl_mvm_bt_coex_vif_change(mvm);
2053
2054 /* we don't support TDLS during DCM */
2055 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2056 iwl_mvm_teardown_tdls_peers(mvm);
2057
2058 goto out_unlock;
2059
2060 out_quota_failed:
2061 iwl_mvm_power_update_mac(mvm);
2062 mvmvif->ap_ibss_active = false;
2063 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2064 out_unbind:
2065 iwl_mvm_binding_remove_vif(mvm, vif);
2066 out_remove:
2067 iwl_mvm_mac_ctxt_remove(mvm, vif);
2068 out_unlock:
2069 mutex_unlock(&mvm->mutex);
2070 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2071 return ret;
2072 }
2073
2074 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2075 struct ieee80211_vif *vif)
2076 {
2077 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2078 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2079
2080 iwl_mvm_prepare_mac_removal(mvm, vif);
2081
2082 mutex_lock(&mvm->mutex);
2083
2084 /* Handle AP stop while in CSA */
2085 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2086 iwl_mvm_remove_time_event(mvm, mvmvif,
2087 &mvmvif->time_event_data);
2088 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2089 mvmvif->csa_countdown = false;
2090 }
2091
2092 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2093 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2094 mvm->csa_tx_block_bcn_timeout = 0;
2095 }
2096
2097 mvmvif->ap_ibss_active = false;
2098 mvm->ap_last_beacon_gp2 = 0;
2099
2100 iwl_mvm_bt_coex_vif_change(mvm);
2101
2102 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2103
2104 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2105 if (vif->p2p && mvm->p2p_device_vif)
2106 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2107
2108 iwl_mvm_update_quotas(mvm, false, NULL);
2109 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2110 iwl_mvm_binding_remove_vif(mvm, vif);
2111
2112 iwl_mvm_power_update_mac(mvm);
2113
2114 iwl_mvm_mac_ctxt_remove(mvm, vif);
2115
2116 mutex_unlock(&mvm->mutex);
2117 }
2118
2119 static void
2120 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2121 struct ieee80211_vif *vif,
2122 struct ieee80211_bss_conf *bss_conf,
2123 u32 changes)
2124 {
2125 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2126
2127 /* Changes will be applied when the AP/IBSS is started */
2128 if (!mvmvif->ap_ibss_active)
2129 return;
2130
2131 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2132 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2133 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2134 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2135
2136 /* Need to send a new beacon template to the FW */
2137 if (changes & BSS_CHANGED_BEACON &&
2138 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2139 IWL_WARN(mvm, "Failed updating beacon data\n");
2140
2141 if (changes & BSS_CHANGED_TXPOWER) {
2142 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2143 bss_conf->txpower);
2144 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2145 }
2146 }
2147
2148 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2149 struct ieee80211_vif *vif,
2150 struct ieee80211_bss_conf *bss_conf,
2151 u32 changes)
2152 {
2153 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2154
2155 /*
2156 * iwl_mvm_bss_info_changed_station() might call
2157 * iwl_mvm_protect_session(), which reads directly from
2158 * the device (the system time), so make sure it is available.
2159 */
2160 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2161 return;
2162
2163 mutex_lock(&mvm->mutex);
2164
2165 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2166 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2167
2168 switch (vif->type) {
2169 case NL80211_IFTYPE_STATION:
2170 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2171 break;
2172 case NL80211_IFTYPE_AP:
2173 case NL80211_IFTYPE_ADHOC:
2174 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2175 break;
2176 default:
2177 /* shouldn't happen */
2178 WARN_ON_ONCE(1);
2179 }
2180
2181 mutex_unlock(&mvm->mutex);
2182 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2183 }
2184
2185 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2186 struct ieee80211_vif *vif,
2187 struct ieee80211_scan_request *hw_req)
2188 {
2189 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2190 int ret;
2191
2192 if (hw_req->req.n_channels == 0 ||
2193 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2194 return -EINVAL;
2195
2196 mutex_lock(&mvm->mutex);
2197 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2198 mutex_unlock(&mvm->mutex);
2199
2200 return ret;
2201 }
2202
2203 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2204 struct ieee80211_vif *vif)
2205 {
2206 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2207
2208 mutex_lock(&mvm->mutex);
2209
2210 /* Due to a race condition, it's possible that mac80211 asks
2211 * us to stop a hw_scan when it's already stopped. This can
2212 * happen, for instance, if we stopped the scan ourselves,
2213 * called ieee80211_scan_completed() and the userspace called
2214 * cancel scan scan before ieee80211_scan_work() could run.
2215 * To handle that, simply return if the scan is not running.
2216 */
2217 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2218 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2219
2220 mutex_unlock(&mvm->mutex);
2221 }
2222
2223 static void
2224 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2225 struct ieee80211_sta *sta, u16 tids,
2226 int num_frames,
2227 enum ieee80211_frame_release_type reason,
2228 bool more_data)
2229 {
2230 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2231
2232 /* Called when we need to transmit (a) frame(s) from mac80211 */
2233
2234 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2235 tids, more_data, false);
2236 }
2237
2238 static void
2239 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2240 struct ieee80211_sta *sta, u16 tids,
2241 int num_frames,
2242 enum ieee80211_frame_release_type reason,
2243 bool more_data)
2244 {
2245 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2246
2247 /* Called when we need to transmit (a) frame(s) from agg queue */
2248
2249 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2250 tids, more_data, true);
2251 }
2252
2253 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2254 struct ieee80211_vif *vif,
2255 enum sta_notify_cmd cmd,
2256 struct ieee80211_sta *sta)
2257 {
2258 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2259 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2260 unsigned long txqs = 0, tids = 0;
2261 int tid;
2262
2263 spin_lock_bh(&mvmsta->lock);
2264 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2265 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2266
2267 if (tid_data->state != IWL_AGG_ON &&
2268 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2269 continue;
2270
2271 __set_bit(tid_data->txq_id, &txqs);
2272
2273 if (iwl_mvm_tid_queued(tid_data) == 0)
2274 continue;
2275
2276 __set_bit(tid, &tids);
2277 }
2278
2279 switch (cmd) {
2280 case STA_NOTIFY_SLEEP:
2281 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2282 ieee80211_sta_block_awake(hw, sta, true);
2283
2284 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2285 ieee80211_sta_set_buffered(sta, tid, true);
2286
2287 if (txqs)
2288 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2289 /*
2290 * The fw updates the STA to be asleep. Tx packets on the Tx
2291 * queues to this station will not be transmitted. The fw will
2292 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2293 */
2294 break;
2295 case STA_NOTIFY_AWAKE:
2296 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2297 break;
2298
2299 if (txqs)
2300 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2301 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2302 break;
2303 default:
2304 break;
2305 }
2306 spin_unlock_bh(&mvmsta->lock);
2307 }
2308
2309 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2310 struct ieee80211_vif *vif,
2311 struct ieee80211_sta *sta)
2312 {
2313 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2314 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2315
2316 /*
2317 * This is called before mac80211 does RCU synchronisation,
2318 * so here we already invalidate our internal RCU-protected
2319 * station pointer. The rest of the code will thus no longer
2320 * be able to find the station this way, and we don't rely
2321 * on further RCU synchronisation after the sta_state()
2322 * callback deleted the station.
2323 */
2324 mutex_lock(&mvm->mutex);
2325 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2326 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2327 ERR_PTR(-ENOENT));
2328
2329 mutex_unlock(&mvm->mutex);
2330 }
2331
2332 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2333 const u8 *bssid)
2334 {
2335 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2336 return;
2337
2338 if (vif->p2p && !iwl_mvm_is_p2p_standalone_uapsd_supported(mvm)) {
2339 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2340 return;
2341 }
2342
2343 if (iwlwifi_mod_params.uapsd_disable) {
2344 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2345 return;
2346 }
2347
2348 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2349 }
2350
2351 static void
2352 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2353 struct ieee80211_vif *vif, u8 *peer_addr,
2354 enum nl80211_tdls_operation action)
2355 {
2356 struct iwl_fw_dbg_trigger_tlv *trig;
2357 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2358
2359 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2360 return;
2361
2362 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2363 tdls_trig = (void *)trig->data;
2364 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2365 return;
2366
2367 if (!(tdls_trig->action_bitmap & BIT(action)))
2368 return;
2369
2370 if (tdls_trig->peer_mode &&
2371 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2372 return;
2373
2374 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2375 "TDLS event occurred, peer %pM, action %d",
2376 peer_addr, action);
2377 }
2378
2379 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2380 struct ieee80211_vif *vif,
2381 struct ieee80211_sta *sta,
2382 enum ieee80211_sta_state old_state,
2383 enum ieee80211_sta_state new_state)
2384 {
2385 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2386 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2387 int ret;
2388
2389 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2390 sta->addr, old_state, new_state);
2391
2392 /* this would be a mac80211 bug ... but don't crash */
2393 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2394 return -EINVAL;
2395
2396 /* if a STA is being removed, reuse its ID */
2397 flush_work(&mvm->sta_drained_wk);
2398
2399 mutex_lock(&mvm->mutex);
2400 if (old_state == IEEE80211_STA_NOTEXIST &&
2401 new_state == IEEE80211_STA_NONE) {
2402 /*
2403 * Firmware bug - it'll crash if the beacon interval is less
2404 * than 16. We can't avoid connecting at all, so refuse the
2405 * station state change, this will cause mac80211 to abandon
2406 * attempts to connect to this AP, and eventually wpa_s will
2407 * blacklist the AP...
2408 */
2409 if (vif->type == NL80211_IFTYPE_STATION &&
2410 vif->bss_conf.beacon_int < 16) {
2411 IWL_ERR(mvm,
2412 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2413 sta->addr, vif->bss_conf.beacon_int);
2414 ret = -EINVAL;
2415 goto out_unlock;
2416 }
2417
2418 if (sta->tdls &&
2419 (vif->p2p ||
2420 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2421 IWL_MVM_TDLS_STA_COUNT ||
2422 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2423 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2424 ret = -EBUSY;
2425 goto out_unlock;
2426 }
2427
2428 ret = iwl_mvm_add_sta(mvm, vif, sta);
2429 if (sta->tdls && ret == 0) {
2430 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2431 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2432 NL80211_TDLS_SETUP);
2433 }
2434 } else if (old_state == IEEE80211_STA_NONE &&
2435 new_state == IEEE80211_STA_AUTH) {
2436 /*
2437 * EBS may be disabled due to previous failures reported by FW.
2438 * Reset EBS status here assuming environment has been changed.
2439 */
2440 mvm->last_ebs_successful = true;
2441 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2442 ret = 0;
2443 } else if (old_state == IEEE80211_STA_AUTH &&
2444 new_state == IEEE80211_STA_ASSOC) {
2445 if (vif->type == NL80211_IFTYPE_AP) {
2446 mvmvif->ap_assoc_sta_count++;
2447 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2448 }
2449 ret = iwl_mvm_update_sta(mvm, vif, sta);
2450 if (ret == 0)
2451 iwl_mvm_rs_rate_init(mvm, sta,
2452 mvmvif->phy_ctxt->channel->band,
2453 true);
2454 } else if (old_state == IEEE80211_STA_ASSOC &&
2455 new_state == IEEE80211_STA_AUTHORIZED) {
2456
2457 /* we don't support TDLS during DCM */
2458 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2459 iwl_mvm_teardown_tdls_peers(mvm);
2460
2461 if (sta->tdls)
2462 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2463 NL80211_TDLS_ENABLE_LINK);
2464
2465 /* enable beacon filtering */
2466 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2467 ret = 0;
2468 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2469 new_state == IEEE80211_STA_ASSOC) {
2470 /* disable beacon filtering */
2471 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2472 ret = 0;
2473 } else if (old_state == IEEE80211_STA_ASSOC &&
2474 new_state == IEEE80211_STA_AUTH) {
2475 if (vif->type == NL80211_IFTYPE_AP) {
2476 mvmvif->ap_assoc_sta_count--;
2477 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2478 }
2479 ret = 0;
2480 } else if (old_state == IEEE80211_STA_AUTH &&
2481 new_state == IEEE80211_STA_NONE) {
2482 ret = 0;
2483 } else if (old_state == IEEE80211_STA_NONE &&
2484 new_state == IEEE80211_STA_NOTEXIST) {
2485 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2486 if (sta->tdls) {
2487 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2488 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2489 NL80211_TDLS_DISABLE_LINK);
2490 }
2491 } else {
2492 ret = -EIO;
2493 }
2494 out_unlock:
2495 mutex_unlock(&mvm->mutex);
2496
2497 if (sta->tdls && ret == 0) {
2498 if (old_state == IEEE80211_STA_NOTEXIST &&
2499 new_state == IEEE80211_STA_NONE)
2500 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2501 else if (old_state == IEEE80211_STA_NONE &&
2502 new_state == IEEE80211_STA_NOTEXIST)
2503 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2504 }
2505
2506 return ret;
2507 }
2508
2509 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2510 {
2511 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2512
2513 mvm->rts_threshold = value;
2514
2515 return 0;
2516 }
2517
2518 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2519 struct ieee80211_vif *vif,
2520 struct ieee80211_sta *sta, u32 changed)
2521 {
2522 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2523
2524 if (vif->type == NL80211_IFTYPE_STATION &&
2525 changed & IEEE80211_RC_NSS_CHANGED)
2526 iwl_mvm_sf_update(mvm, vif, false);
2527 }
2528
2529 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2530 struct ieee80211_vif *vif, u16 ac,
2531 const struct ieee80211_tx_queue_params *params)
2532 {
2533 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2534 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2535
2536 mvmvif->queue_params[ac] = *params;
2537
2538 /*
2539 * No need to update right away, we'll get BSS_CHANGED_QOS
2540 * The exception is P2P_DEVICE interface which needs immediate update.
2541 */
2542 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2543 int ret;
2544
2545 mutex_lock(&mvm->mutex);
2546 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2547 mutex_unlock(&mvm->mutex);
2548 return ret;
2549 }
2550 return 0;
2551 }
2552
2553 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2554 struct ieee80211_vif *vif)
2555 {
2556 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2557 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2558 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2559
2560 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2561 return;
2562
2563 /*
2564 * iwl_mvm_protect_session() reads directly from the device
2565 * (the system time), so make sure it is available.
2566 */
2567 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2568 return;
2569
2570 mutex_lock(&mvm->mutex);
2571 /* Try really hard to protect the session and hear a beacon */
2572 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2573 mutex_unlock(&mvm->mutex);
2574
2575 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2576 }
2577
2578 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2579 struct ieee80211_vif *vif,
2580 struct cfg80211_sched_scan_request *req,
2581 struct ieee80211_scan_ies *ies)
2582 {
2583 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2584
2585 int ret;
2586
2587 mutex_lock(&mvm->mutex);
2588
2589 if (!vif->bss_conf.idle) {
2590 ret = -EBUSY;
2591 goto out;
2592 }
2593
2594 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2595
2596 out:
2597 mutex_unlock(&mvm->mutex);
2598 return ret;
2599 }
2600
2601 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2602 struct ieee80211_vif *vif)
2603 {
2604 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2605 int ret;
2606
2607 mutex_lock(&mvm->mutex);
2608
2609 /* Due to a race condition, it's possible that mac80211 asks
2610 * us to stop a sched_scan when it's already stopped. This
2611 * can happen, for instance, if we stopped the scan ourselves,
2612 * called ieee80211_sched_scan_stopped() and the userspace called
2613 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2614 * could run. To handle this, simply return if the scan is
2615 * not running.
2616 */
2617 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2618 mutex_unlock(&mvm->mutex);
2619 return 0;
2620 }
2621
2622 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2623 mutex_unlock(&mvm->mutex);
2624 iwl_mvm_wait_for_async_handlers(mvm);
2625
2626 return ret;
2627 }
2628
2629 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2630 enum set_key_cmd cmd,
2631 struct ieee80211_vif *vif,
2632 struct ieee80211_sta *sta,
2633 struct ieee80211_key_conf *key)
2634 {
2635 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2636 struct iwl_mvm_sta *mvmsta;
2637 struct iwl_mvm_key_pn *ptk_pn;
2638 int keyidx = key->keyidx;
2639 int ret;
2640 u8 key_offset;
2641
2642 if (iwlwifi_mod_params.sw_crypto) {
2643 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2644 return -EOPNOTSUPP;
2645 }
2646
2647 switch (key->cipher) {
2648 case WLAN_CIPHER_SUITE_TKIP:
2649 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2650 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2651 break;
2652 case WLAN_CIPHER_SUITE_CCMP:
2653 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2654 break;
2655 case WLAN_CIPHER_SUITE_AES_CMAC:
2656 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2657 break;
2658 case WLAN_CIPHER_SUITE_WEP40:
2659 case WLAN_CIPHER_SUITE_WEP104:
2660 /* For non-client mode, only use WEP keys for TX as we probably
2661 * don't have a station yet anyway and would then have to keep
2662 * track of the keys, linking them to each of the clients/peers
2663 * as they appear. For now, don't do that, for performance WEP
2664 * offload doesn't really matter much, but we need it for some
2665 * other offload features in client mode.
2666 */
2667 if (vif->type != NL80211_IFTYPE_STATION)
2668 return 0;
2669 break;
2670 default:
2671 /* currently FW supports only one optional cipher scheme */
2672 if (hw->n_cipher_schemes &&
2673 hw->cipher_schemes->cipher == key->cipher)
2674 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2675 else
2676 return -EOPNOTSUPP;
2677 }
2678
2679 mutex_lock(&mvm->mutex);
2680
2681 switch (cmd) {
2682 case SET_KEY:
2683 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2684 vif->type == NL80211_IFTYPE_AP) && !sta) {
2685 /*
2686 * GTK on AP interface is a TX-only key, return 0;
2687 * on IBSS they're per-station and because we're lazy
2688 * we don't support them for RX, so do the same.
2689 * CMAC in AP/IBSS modes must be done in software.
2690 */
2691 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
2692 ret = -EOPNOTSUPP;
2693 else
2694 ret = 0;
2695 key->hw_key_idx = STA_KEY_IDX_INVALID;
2696 break;
2697 }
2698
2699 /* During FW restart, in order to restore the state as it was,
2700 * don't try to reprogram keys we previously failed for.
2701 */
2702 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2703 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2704 IWL_DEBUG_MAC80211(mvm,
2705 "skip invalid idx key programming during restart\n");
2706 ret = 0;
2707 break;
2708 }
2709
2710 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2711 sta && iwl_mvm_has_new_rx_api(mvm) &&
2712 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2713 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2714 key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2715 struct ieee80211_key_seq seq;
2716 int tid, q;
2717
2718 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2719 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2720 ptk_pn = kzalloc(sizeof(*ptk_pn) +
2721 mvm->trans->num_rx_queues *
2722 sizeof(ptk_pn->q[0]),
2723 GFP_KERNEL);
2724 if (!ptk_pn) {
2725 ret = -ENOMEM;
2726 break;
2727 }
2728
2729 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2730 ieee80211_get_key_rx_seq(key, tid, &seq);
2731 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2732 memcpy(ptk_pn->q[q].pn[tid],
2733 seq.ccmp.pn,
2734 IEEE80211_CCMP_PN_LEN);
2735 }
2736
2737 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2738 }
2739
2740 /* in HW restart reuse the index, otherwise request a new one */
2741 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2742 key_offset = key->hw_key_idx;
2743 else
2744 key_offset = STA_KEY_IDX_INVALID;
2745
2746 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2747 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2748 if (ret) {
2749 IWL_WARN(mvm, "set key failed\n");
2750 /*
2751 * can't add key for RX, but we don't need it
2752 * in the device for TX so still return 0
2753 */
2754 key->hw_key_idx = STA_KEY_IDX_INVALID;
2755 ret = 0;
2756 }
2757
2758 break;
2759 case DISABLE_KEY:
2760 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2761 ret = 0;
2762 break;
2763 }
2764
2765 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2766 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2767 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2768 key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2769 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2770 ptk_pn = rcu_dereference_protected(
2771 mvmsta->ptk_pn[keyidx],
2772 lockdep_is_held(&mvm->mutex));
2773 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2774 if (ptk_pn)
2775 kfree_rcu(ptk_pn, rcu_head);
2776 }
2777
2778 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2779 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2780 break;
2781 default:
2782 ret = -EINVAL;
2783 }
2784
2785 mutex_unlock(&mvm->mutex);
2786 return ret;
2787 }
2788
2789 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2790 struct ieee80211_vif *vif,
2791 struct ieee80211_key_conf *keyconf,
2792 struct ieee80211_sta *sta,
2793 u32 iv32, u16 *phase1key)
2794 {
2795 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2796
2797 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2798 return;
2799
2800 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2801 }
2802
2803
2804 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2805 struct iwl_rx_packet *pkt, void *data)
2806 {
2807 struct iwl_mvm *mvm =
2808 container_of(notif_wait, struct iwl_mvm, notif_wait);
2809 struct iwl_hs20_roc_res *resp;
2810 int resp_len = iwl_rx_packet_payload_len(pkt);
2811 struct iwl_mvm_time_event_data *te_data = data;
2812
2813 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2814 return true;
2815
2816 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2817 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2818 return true;
2819 }
2820
2821 resp = (void *)pkt->data;
2822
2823 IWL_DEBUG_TE(mvm,
2824 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2825 resp->status, resp->event_unique_id);
2826
2827 te_data->uid = le32_to_cpu(resp->event_unique_id);
2828 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2829 te_data->uid);
2830
2831 spin_lock_bh(&mvm->time_event_lock);
2832 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2833 spin_unlock_bh(&mvm->time_event_lock);
2834
2835 return true;
2836 }
2837
2838 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2839 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2840 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2841 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2842 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2843 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2844 struct ieee80211_channel *channel,
2845 struct ieee80211_vif *vif,
2846 int duration)
2847 {
2848 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2849 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2850 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2851 static const u16 time_event_response[] = { HOT_SPOT_CMD };
2852 struct iwl_notification_wait wait_time_event;
2853 u32 dtim_interval = vif->bss_conf.dtim_period *
2854 vif->bss_conf.beacon_int;
2855 u32 req_dur, delay;
2856 struct iwl_hs20_roc_req aux_roc_req = {
2857 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2858 .id_and_color =
2859 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2860 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2861 /* Set the channel info data */
2862 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2863 PHY_BAND_24 : PHY_BAND_5,
2864 .channel_info.channel = channel->hw_value,
2865 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2866 /* Set the time and duration */
2867 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2868 };
2869
2870 delay = AUX_ROC_MIN_DELAY;
2871 req_dur = MSEC_TO_TU(duration);
2872
2873 /*
2874 * If we are associated we want the delay time to be at least one
2875 * dtim interval so that the FW can wait until after the DTIM and
2876 * then start the time event, this will potentially allow us to
2877 * remain off-channel for the max duration.
2878 * Since we want to use almost a whole dtim interval we would also
2879 * like the delay to be for 2-3 dtim intervals, in case there are
2880 * other time events with higher priority.
2881 */
2882 if (vif->bss_conf.assoc) {
2883 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2884 /* We cannot remain off-channel longer than the DTIM interval */
2885 if (dtim_interval <= req_dur) {
2886 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2887 if (req_dur <= AUX_ROC_MIN_DURATION)
2888 req_dur = dtim_interval -
2889 AUX_ROC_MIN_SAFETY_BUFFER;
2890 }
2891 }
2892
2893 aux_roc_req.duration = cpu_to_le32(req_dur);
2894 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2895
2896 IWL_DEBUG_TE(mvm,
2897 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2898 channel->hw_value, req_dur, duration, delay,
2899 dtim_interval);
2900 /* Set the node address */
2901 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2902
2903 lockdep_assert_held(&mvm->mutex);
2904
2905 spin_lock_bh(&mvm->time_event_lock);
2906
2907 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2908 spin_unlock_bh(&mvm->time_event_lock);
2909 return -EIO;
2910 }
2911
2912 te_data->vif = vif;
2913 te_data->duration = duration;
2914 te_data->id = HOT_SPOT_CMD;
2915
2916 spin_unlock_bh(&mvm->time_event_lock);
2917
2918 /*
2919 * Use a notification wait, which really just processes the
2920 * command response and doesn't wait for anything, in order
2921 * to be able to process the response and get the UID inside
2922 * the RX path. Using CMD_WANT_SKB doesn't work because it
2923 * stores the buffer and then wakes up this thread, by which
2924 * time another notification (that the time event started)
2925 * might already be processed unsuccessfully.
2926 */
2927 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2928 time_event_response,
2929 ARRAY_SIZE(time_event_response),
2930 iwl_mvm_rx_aux_roc, te_data);
2931
2932 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2933 &aux_roc_req);
2934
2935 if (res) {
2936 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2937 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2938 goto out_clear_te;
2939 }
2940
2941 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2942 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2943 /* should never fail */
2944 WARN_ON_ONCE(res);
2945
2946 if (res) {
2947 out_clear_te:
2948 spin_lock_bh(&mvm->time_event_lock);
2949 iwl_mvm_te_clear_data(mvm, te_data);
2950 spin_unlock_bh(&mvm->time_event_lock);
2951 }
2952
2953 return res;
2954 }
2955
2956 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2957 struct ieee80211_vif *vif,
2958 struct ieee80211_channel *channel,
2959 int duration,
2960 enum ieee80211_roc_type type)
2961 {
2962 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2963 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2964 struct cfg80211_chan_def chandef;
2965 struct iwl_mvm_phy_ctxt *phy_ctxt;
2966 int ret, i;
2967
2968 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2969 duration, type);
2970
2971 flush_work(&mvm->roc_done_wk);
2972
2973 mutex_lock(&mvm->mutex);
2974
2975 switch (vif->type) {
2976 case NL80211_IFTYPE_STATION:
2977 if (fw_has_capa(&mvm->fw->ucode_capa,
2978 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2979 /* Use aux roc framework (HS20) */
2980 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2981 vif, duration);
2982 goto out_unlock;
2983 }
2984 IWL_ERR(mvm, "hotspot not supported\n");
2985 ret = -EINVAL;
2986 goto out_unlock;
2987 case NL80211_IFTYPE_P2P_DEVICE:
2988 /* handle below */
2989 break;
2990 default:
2991 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2992 ret = -EINVAL;
2993 goto out_unlock;
2994 }
2995
2996 for (i = 0; i < NUM_PHY_CTX; i++) {
2997 phy_ctxt = &mvm->phy_ctxts[i];
2998 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2999 continue;
3000
3001 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3002 /*
3003 * Unbind the P2P_DEVICE from the current PHY context,
3004 * and if the PHY context is not used remove it.
3005 */
3006 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3007 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3008 goto out_unlock;
3009
3010 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3011
3012 /* Bind the P2P_DEVICE to the current PHY Context */
3013 mvmvif->phy_ctxt = phy_ctxt;
3014
3015 ret = iwl_mvm_binding_add_vif(mvm, vif);
3016 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3017 goto out_unlock;
3018
3019 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3020 goto schedule_time_event;
3021 }
3022 }
3023
3024 /* Need to update the PHY context only if the ROC channel changed */
3025 if (channel == mvmvif->phy_ctxt->channel)
3026 goto schedule_time_event;
3027
3028 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3029
3030 /*
3031 * Change the PHY context configuration as it is currently referenced
3032 * only by the P2P Device MAC
3033 */
3034 if (mvmvif->phy_ctxt->ref == 1) {
3035 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3036 &chandef, 1, 1);
3037 if (ret)
3038 goto out_unlock;
3039 } else {
3040 /*
3041 * The PHY context is shared with other MACs. Need to remove the
3042 * P2P Device from the binding, allocate an new PHY context and
3043 * create a new binding
3044 */
3045 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3046 if (!phy_ctxt) {
3047 ret = -ENOSPC;
3048 goto out_unlock;
3049 }
3050
3051 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3052 1, 1);
3053 if (ret) {
3054 IWL_ERR(mvm, "Failed to change PHY context\n");
3055 goto out_unlock;
3056 }
3057
3058 /* Unbind the P2P_DEVICE from the current PHY context */
3059 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3060 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3061 goto out_unlock;
3062
3063 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3064
3065 /* Bind the P2P_DEVICE to the new allocated PHY context */
3066 mvmvif->phy_ctxt = phy_ctxt;
3067
3068 ret = iwl_mvm_binding_add_vif(mvm, vif);
3069 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3070 goto out_unlock;
3071
3072 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3073 }
3074
3075 schedule_time_event:
3076 /* Schedule the time events */
3077 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3078
3079 out_unlock:
3080 mutex_unlock(&mvm->mutex);
3081 IWL_DEBUG_MAC80211(mvm, "leave\n");
3082 return ret;
3083 }
3084
3085 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3086 {
3087 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3088
3089 IWL_DEBUG_MAC80211(mvm, "enter\n");
3090
3091 mutex_lock(&mvm->mutex);
3092 iwl_mvm_stop_roc(mvm);
3093 mutex_unlock(&mvm->mutex);
3094
3095 IWL_DEBUG_MAC80211(mvm, "leave\n");
3096 return 0;
3097 }
3098
3099 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3100 struct ieee80211_chanctx_conf *ctx)
3101 {
3102 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3103 struct iwl_mvm_phy_ctxt *phy_ctxt;
3104 int ret;
3105
3106 lockdep_assert_held(&mvm->mutex);
3107
3108 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3109
3110 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3111 if (!phy_ctxt) {
3112 ret = -ENOSPC;
3113 goto out;
3114 }
3115
3116 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3117 ctx->rx_chains_static,
3118 ctx->rx_chains_dynamic);
3119 if (ret) {
3120 IWL_ERR(mvm, "Failed to add PHY context\n");
3121 goto out;
3122 }
3123
3124 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3125 *phy_ctxt_id = phy_ctxt->id;
3126 out:
3127 return ret;
3128 }
3129
3130 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3131 struct ieee80211_chanctx_conf *ctx)
3132 {
3133 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3134 int ret;
3135
3136 mutex_lock(&mvm->mutex);
3137 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3138 mutex_unlock(&mvm->mutex);
3139
3140 return ret;
3141 }
3142
3143 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3144 struct ieee80211_chanctx_conf *ctx)
3145 {
3146 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3147 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3148
3149 lockdep_assert_held(&mvm->mutex);
3150
3151 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3152 }
3153
3154 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3155 struct ieee80211_chanctx_conf *ctx)
3156 {
3157 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3158
3159 mutex_lock(&mvm->mutex);
3160 __iwl_mvm_remove_chanctx(mvm, ctx);
3161 mutex_unlock(&mvm->mutex);
3162 }
3163
3164 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3165 struct ieee80211_chanctx_conf *ctx,
3166 u32 changed)
3167 {
3168 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3169 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3170 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3171
3172 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3173 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3174 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3175 IEEE80211_CHANCTX_CHANGE_RADAR |
3176 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3177 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3178 phy_ctxt->ref, changed))
3179 return;
3180
3181 mutex_lock(&mvm->mutex);
3182 iwl_mvm_bt_coex_vif_change(mvm);
3183 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3184 ctx->rx_chains_static,
3185 ctx->rx_chains_dynamic);
3186 mutex_unlock(&mvm->mutex);
3187 }
3188
3189 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3190 struct ieee80211_vif *vif,
3191 struct ieee80211_chanctx_conf *ctx,
3192 bool switching_chanctx)
3193 {
3194 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3195 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3196 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3197 int ret;
3198
3199 lockdep_assert_held(&mvm->mutex);
3200
3201 mvmvif->phy_ctxt = phy_ctxt;
3202
3203 switch (vif->type) {
3204 case NL80211_IFTYPE_AP:
3205 /* only needed if we're switching chanctx (i.e. during CSA) */
3206 if (switching_chanctx) {
3207 mvmvif->ap_ibss_active = true;
3208 break;
3209 }
3210 case NL80211_IFTYPE_ADHOC:
3211 /*
3212 * The AP binding flow is handled as part of the start_ap flow
3213 * (in bss_info_changed), similarly for IBSS.
3214 */
3215 ret = 0;
3216 goto out;
3217 case NL80211_IFTYPE_STATION:
3218 break;
3219 case NL80211_IFTYPE_MONITOR:
3220 /* always disable PS when a monitor interface is active */
3221 mvmvif->ps_disabled = true;
3222 break;
3223 default:
3224 ret = -EINVAL;
3225 goto out;
3226 }
3227
3228 ret = iwl_mvm_binding_add_vif(mvm, vif);
3229 if (ret)
3230 goto out;
3231
3232 /*
3233 * Power state must be updated before quotas,
3234 * otherwise fw will complain.
3235 */
3236 iwl_mvm_power_update_mac(mvm);
3237
3238 /* Setting the quota at this stage is only required for monitor
3239 * interfaces. For the other types, the bss_info changed flow
3240 * will handle quota settings.
3241 */
3242 if (vif->type == NL80211_IFTYPE_MONITOR) {
3243 mvmvif->monitor_active = true;
3244 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3245 if (ret)
3246 goto out_remove_binding;
3247
3248 ret = iwl_mvm_add_snif_sta(mvm, vif);
3249 if (ret)
3250 goto out_remove_binding;
3251
3252 }
3253
3254 /* Handle binding during CSA */
3255 if (vif->type == NL80211_IFTYPE_AP) {
3256 iwl_mvm_update_quotas(mvm, false, NULL);
3257 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3258 }
3259
3260 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3261 u32 duration = 2 * vif->bss_conf.beacon_int;
3262
3263 /* iwl_mvm_protect_session() reads directly from the
3264 * device (the system time), so make sure it is
3265 * available.
3266 */
3267 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3268 if (ret)
3269 goto out_remove_binding;
3270
3271 /* Protect the session to make sure we hear the first
3272 * beacon on the new channel.
3273 */
3274 iwl_mvm_protect_session(mvm, vif, duration, duration,
3275 vif->bss_conf.beacon_int / 2,
3276 true);
3277
3278 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3279
3280 iwl_mvm_update_quotas(mvm, false, NULL);
3281 }
3282
3283 goto out;
3284
3285 out_remove_binding:
3286 iwl_mvm_binding_remove_vif(mvm, vif);
3287 iwl_mvm_power_update_mac(mvm);
3288 out:
3289 if (ret)
3290 mvmvif->phy_ctxt = NULL;
3291 return ret;
3292 }
3293 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3294 struct ieee80211_vif *vif,
3295 struct ieee80211_chanctx_conf *ctx)
3296 {
3297 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3298 int ret;
3299
3300 mutex_lock(&mvm->mutex);
3301 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3302 mutex_unlock(&mvm->mutex);
3303
3304 return ret;
3305 }
3306
3307 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3308 struct ieee80211_vif *vif,
3309 struct ieee80211_chanctx_conf *ctx,
3310 bool switching_chanctx)
3311 {
3312 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3313 struct ieee80211_vif *disabled_vif = NULL;
3314
3315 lockdep_assert_held(&mvm->mutex);
3316
3317 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3318
3319 switch (vif->type) {
3320 case NL80211_IFTYPE_ADHOC:
3321 goto out;
3322 case NL80211_IFTYPE_MONITOR:
3323 mvmvif->monitor_active = false;
3324 mvmvif->ps_disabled = false;
3325 iwl_mvm_rm_snif_sta(mvm, vif);
3326 break;
3327 case NL80211_IFTYPE_AP:
3328 /* This part is triggered only during CSA */
3329 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3330 goto out;
3331
3332 mvmvif->csa_countdown = false;
3333
3334 /* Set CS bit on all the stations */
3335 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3336
3337 /* Save blocked iface, the timeout is set on the next beacon */
3338 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3339
3340 mvmvif->ap_ibss_active = false;
3341 break;
3342 case NL80211_IFTYPE_STATION:
3343 if (!switching_chanctx)
3344 break;
3345
3346 disabled_vif = vif;
3347
3348 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3349 break;
3350 default:
3351 break;
3352 }
3353
3354 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3355 iwl_mvm_binding_remove_vif(mvm, vif);
3356
3357 out:
3358 mvmvif->phy_ctxt = NULL;
3359 iwl_mvm_power_update_mac(mvm);
3360 }
3361
3362 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3363 struct ieee80211_vif *vif,
3364 struct ieee80211_chanctx_conf *ctx)
3365 {
3366 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3367
3368 mutex_lock(&mvm->mutex);
3369 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3370 mutex_unlock(&mvm->mutex);
3371 }
3372
3373 static int
3374 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3375 struct ieee80211_vif_chanctx_switch *vifs)
3376 {
3377 int ret;
3378
3379 mutex_lock(&mvm->mutex);
3380 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3381 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3382
3383 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3384 if (ret) {
3385 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3386 goto out_reassign;
3387 }
3388
3389 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3390 true);
3391 if (ret) {
3392 IWL_ERR(mvm,
3393 "failed to assign new_ctx during channel switch\n");
3394 goto out_remove;
3395 }
3396
3397 /* we don't support TDLS during DCM - can be caused by channel switch */
3398 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3399 iwl_mvm_teardown_tdls_peers(mvm);
3400
3401 goto out;
3402
3403 out_remove:
3404 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3405
3406 out_reassign:
3407 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3408 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3409 goto out_restart;
3410 }
3411
3412 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3413 true)) {
3414 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3415 goto out_restart;
3416 }
3417
3418 goto out;
3419
3420 out_restart:
3421 /* things keep failing, better restart the hw */
3422 iwl_mvm_nic_restart(mvm, false);
3423
3424 out:
3425 mutex_unlock(&mvm->mutex);
3426
3427 return ret;
3428 }
3429
3430 static int
3431 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3432 struct ieee80211_vif_chanctx_switch *vifs)
3433 {
3434 int ret;
3435
3436 mutex_lock(&mvm->mutex);
3437 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3438
3439 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3440 true);
3441 if (ret) {
3442 IWL_ERR(mvm,
3443 "failed to assign new_ctx during channel switch\n");
3444 goto out_reassign;
3445 }
3446
3447 goto out;
3448
3449 out_reassign:
3450 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3451 true)) {
3452 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3453 goto out_restart;
3454 }
3455
3456 goto out;
3457
3458 out_restart:
3459 /* things keep failing, better restart the hw */
3460 iwl_mvm_nic_restart(mvm, false);
3461
3462 out:
3463 mutex_unlock(&mvm->mutex);
3464
3465 return ret;
3466 }
3467
3468 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3469 struct ieee80211_vif_chanctx_switch *vifs,
3470 int n_vifs,
3471 enum ieee80211_chanctx_switch_mode mode)
3472 {
3473 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3474 int ret;
3475
3476 /* we only support a single-vif right now */
3477 if (n_vifs > 1)
3478 return -EOPNOTSUPP;
3479
3480 switch (mode) {
3481 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3482 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3483 break;
3484 case CHANCTX_SWMODE_REASSIGN_VIF:
3485 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3486 break;
3487 default:
3488 ret = -EOPNOTSUPP;
3489 break;
3490 }
3491
3492 return ret;
3493 }
3494
3495 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3496 struct ieee80211_sta *sta,
3497 bool set)
3498 {
3499 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3500 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3501
3502 if (!mvm_sta || !mvm_sta->vif) {
3503 IWL_ERR(mvm, "Station is not associated to a vif\n");
3504 return -EINVAL;
3505 }
3506
3507 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3508 }
3509
3510 #ifdef CONFIG_NL80211_TESTMODE
3511 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3512 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3513 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3514 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3515 };
3516
3517 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3518 struct ieee80211_vif *vif,
3519 void *data, int len)
3520 {
3521 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3522 int err;
3523 u32 noa_duration;
3524
3525 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3526 if (err)
3527 return err;
3528
3529 if (!tb[IWL_MVM_TM_ATTR_CMD])
3530 return -EINVAL;
3531
3532 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3533 case IWL_MVM_TM_CMD_SET_NOA:
3534 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3535 !vif->bss_conf.enable_beacon ||
3536 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3537 return -EINVAL;
3538
3539 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3540 if (noa_duration >= vif->bss_conf.beacon_int)
3541 return -EINVAL;
3542
3543 mvm->noa_duration = noa_duration;
3544 mvm->noa_vif = vif;
3545
3546 return iwl_mvm_update_quotas(mvm, false, NULL);
3547 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3548 /* must be associated client vif - ignore authorized */
3549 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3550 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3551 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3552 return -EINVAL;
3553
3554 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3555 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3556 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3557 }
3558
3559 return -EOPNOTSUPP;
3560 }
3561
3562 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3563 struct ieee80211_vif *vif,
3564 void *data, int len)
3565 {
3566 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3567 int err;
3568
3569 mutex_lock(&mvm->mutex);
3570 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3571 mutex_unlock(&mvm->mutex);
3572
3573 return err;
3574 }
3575 #endif
3576
3577 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3578 struct ieee80211_vif *vif,
3579 struct ieee80211_channel_switch *chsw)
3580 {
3581 /* By implementing this operation, we prevent mac80211 from
3582 * starting its own channel switch timer, so that we can call
3583 * ieee80211_chswitch_done() ourselves at the right time
3584 * (which is when the absence time event starts).
3585 */
3586
3587 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3588 "dummy channel switch op\n");
3589 }
3590
3591 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3592 struct ieee80211_vif *vif,
3593 struct ieee80211_channel_switch *chsw)
3594 {
3595 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3596 struct ieee80211_vif *csa_vif;
3597 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3598 u32 apply_time;
3599 int ret;
3600
3601 mutex_lock(&mvm->mutex);
3602
3603 mvmvif->csa_failed = false;
3604
3605 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3606 chsw->chandef.center_freq1);
3607
3608 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3609
3610 switch (vif->type) {
3611 case NL80211_IFTYPE_AP:
3612 csa_vif =
3613 rcu_dereference_protected(mvm->csa_vif,
3614 lockdep_is_held(&mvm->mutex));
3615 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3616 "Another CSA is already in progress")) {
3617 ret = -EBUSY;
3618 goto out_unlock;
3619 }
3620
3621 rcu_assign_pointer(mvm->csa_vif, vif);
3622
3623 if (WARN_ONCE(mvmvif->csa_countdown,
3624 "Previous CSA countdown didn't complete")) {
3625 ret = -EBUSY;
3626 goto out_unlock;
3627 }
3628
3629 break;
3630 case NL80211_IFTYPE_STATION:
3631 /* Schedule the time event to a bit before beacon 1,
3632 * to make sure we're in the new channel when the
3633 * GO/AP arrives.
3634 */
3635 apply_time = chsw->device_timestamp +
3636 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3637 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3638
3639 if (chsw->block_tx)
3640 iwl_mvm_csa_client_absent(mvm, vif);
3641
3642 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3643 apply_time);
3644 if (mvmvif->bf_data.bf_enabled) {
3645 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3646 if (ret)
3647 goto out_unlock;
3648 }
3649
3650 break;
3651 default:
3652 break;
3653 }
3654
3655 mvmvif->ps_disabled = true;
3656
3657 ret = iwl_mvm_power_update_ps(mvm);
3658 if (ret)
3659 goto out_unlock;
3660
3661 /* we won't be on this channel any longer */
3662 iwl_mvm_teardown_tdls_peers(mvm);
3663
3664 out_unlock:
3665 mutex_unlock(&mvm->mutex);
3666
3667 return ret;
3668 }
3669
3670 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3671 struct ieee80211_vif *vif)
3672 {
3673 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3674 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3675 int ret;
3676
3677 mutex_lock(&mvm->mutex);
3678
3679 if (mvmvif->csa_failed) {
3680 mvmvif->csa_failed = false;
3681 ret = -EIO;
3682 goto out_unlock;
3683 }
3684
3685 if (vif->type == NL80211_IFTYPE_STATION) {
3686 struct iwl_mvm_sta *mvmsta;
3687
3688 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3689 mvmvif->ap_sta_id);
3690
3691 if (WARN_ON(!mvmsta)) {
3692 ret = -EIO;
3693 goto out_unlock;
3694 }
3695
3696 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3697
3698 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3699
3700 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3701 if (ret)
3702 goto out_unlock;
3703
3704 iwl_mvm_stop_session_protection(mvm, vif);
3705 }
3706
3707 mvmvif->ps_disabled = false;
3708
3709 ret = iwl_mvm_power_update_ps(mvm);
3710
3711 out_unlock:
3712 mutex_unlock(&mvm->mutex);
3713
3714 return ret;
3715 }
3716
3717 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3718 struct ieee80211_vif *vif, u32 queues, bool drop)
3719 {
3720 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3721 struct iwl_mvm_vif *mvmvif;
3722 struct iwl_mvm_sta *mvmsta;
3723 struct ieee80211_sta *sta;
3724 int i;
3725 u32 msk = 0;
3726
3727 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3728 return;
3729
3730 mutex_lock(&mvm->mutex);
3731 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3732
3733 /* flush the AP-station and all TDLS peers */
3734 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3735 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3736 lockdep_is_held(&mvm->mutex));
3737 if (IS_ERR_OR_NULL(sta))
3738 continue;
3739
3740 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3741 if (mvmsta->vif != vif)
3742 continue;
3743
3744 /* make sure only TDLS peers or the AP are flushed */
3745 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3746
3747 msk |= mvmsta->tfd_queue_msk;
3748 }
3749
3750 if (drop) {
3751 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3752 IWL_ERR(mvm, "flush request fail\n");
3753 mutex_unlock(&mvm->mutex);
3754 } else {
3755 mutex_unlock(&mvm->mutex);
3756
3757 /* this can take a while, and we may need/want other operations
3758 * to succeed while doing this, so do it without the mutex held
3759 */
3760 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3761 }
3762 }
3763
3764 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3765 struct survey_info *survey)
3766 {
3767 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3768 int ret;
3769
3770 memset(survey, 0, sizeof(*survey));
3771
3772 /* only support global statistics right now */
3773 if (idx != 0)
3774 return -ENOENT;
3775
3776 if (fw_has_capa(&mvm->fw->ucode_capa,
3777 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3778 return -ENOENT;
3779
3780 mutex_lock(&mvm->mutex);
3781
3782 if (mvm->ucode_loaded) {
3783 ret = iwl_mvm_request_statistics(mvm, false);
3784 if (ret)
3785 goto out;
3786 }
3787
3788 survey->filled = SURVEY_INFO_TIME |
3789 SURVEY_INFO_TIME_RX |
3790 SURVEY_INFO_TIME_TX |
3791 SURVEY_INFO_TIME_SCAN;
3792 survey->time = mvm->accu_radio_stats.on_time_rf +
3793 mvm->radio_stats.on_time_rf;
3794 do_div(survey->time, USEC_PER_MSEC);
3795
3796 survey->time_rx = mvm->accu_radio_stats.rx_time +
3797 mvm->radio_stats.rx_time;
3798 do_div(survey->time_rx, USEC_PER_MSEC);
3799
3800 survey->time_tx = mvm->accu_radio_stats.tx_time +
3801 mvm->radio_stats.tx_time;
3802 do_div(survey->time_tx, USEC_PER_MSEC);
3803
3804 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3805 mvm->radio_stats.on_time_scan;
3806 do_div(survey->time_scan, USEC_PER_MSEC);
3807
3808 ret = 0;
3809 out:
3810 mutex_unlock(&mvm->mutex);
3811 return ret;
3812 }
3813
3814 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3815 struct ieee80211_vif *vif,
3816 struct ieee80211_sta *sta,
3817 struct station_info *sinfo)
3818 {
3819 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3820 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3821 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3822
3823 if (fw_has_capa(&mvm->fw->ucode_capa,
3824 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3825 return;
3826
3827 /* if beacon filtering isn't on mac80211 does it anyway */
3828 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3829 return;
3830
3831 if (!vif->bss_conf.assoc)
3832 return;
3833
3834 mutex_lock(&mvm->mutex);
3835
3836 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3837 goto unlock;
3838
3839 if (iwl_mvm_request_statistics(mvm, false))
3840 goto unlock;
3841
3842 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3843 mvmvif->beacon_stats.accu_num_beacons;
3844 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3845 if (mvmvif->beacon_stats.avg_signal) {
3846 /* firmware only reports a value after RXing a few beacons */
3847 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3848 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3849 }
3850 unlock:
3851 mutex_unlock(&mvm->mutex);
3852 }
3853
3854 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3855 struct ieee80211_vif *vif,
3856 const struct ieee80211_event *event)
3857 {
3858 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
3859 do { \
3860 if ((_cnt) && --(_cnt)) \
3861 break; \
3862 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3863 } while (0)
3864
3865 struct iwl_fw_dbg_trigger_tlv *trig;
3866 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3867
3868 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3869 return;
3870
3871 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3872 trig_mlme = (void *)trig->data;
3873 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3874 return;
3875
3876 if (event->u.mlme.data == ASSOC_EVENT) {
3877 if (event->u.mlme.status == MLME_DENIED)
3878 CHECK_MLME_TRIGGER(mvm, trig, buf,
3879 trig_mlme->stop_assoc_denied,
3880 "DENIED ASSOC: reason %d",
3881 event->u.mlme.reason);
3882 else if (event->u.mlme.status == MLME_TIMEOUT)
3883 CHECK_MLME_TRIGGER(mvm, trig, buf,
3884 trig_mlme->stop_assoc_timeout,
3885 "ASSOC TIMEOUT");
3886 } else if (event->u.mlme.data == AUTH_EVENT) {
3887 if (event->u.mlme.status == MLME_DENIED)
3888 CHECK_MLME_TRIGGER(mvm, trig, buf,
3889 trig_mlme->stop_auth_denied,
3890 "DENIED AUTH: reason %d",
3891 event->u.mlme.reason);
3892 else if (event->u.mlme.status == MLME_TIMEOUT)
3893 CHECK_MLME_TRIGGER(mvm, trig, buf,
3894 trig_mlme->stop_auth_timeout,
3895 "AUTH TIMEOUT");
3896 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3897 CHECK_MLME_TRIGGER(mvm, trig, buf,
3898 trig_mlme->stop_rx_deauth,
3899 "DEAUTH RX %d", event->u.mlme.reason);
3900 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3901 CHECK_MLME_TRIGGER(mvm, trig, buf,
3902 trig_mlme->stop_tx_deauth,
3903 "DEAUTH TX %d", event->u.mlme.reason);
3904 }
3905 #undef CHECK_MLME_TRIGGER
3906 }
3907
3908 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3909 struct ieee80211_vif *vif,
3910 const struct ieee80211_event *event)
3911 {
3912 struct iwl_fw_dbg_trigger_tlv *trig;
3913 struct iwl_fw_dbg_trigger_ba *ba_trig;
3914
3915 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3916 return;
3917
3918 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3919 ba_trig = (void *)trig->data;
3920 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3921 return;
3922
3923 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3924 return;
3925
3926 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3927 "BAR received from %pM, tid %d, ssn %d",
3928 event->u.ba.sta->addr, event->u.ba.tid,
3929 event->u.ba.ssn);
3930 }
3931
3932 static void
3933 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3934 struct ieee80211_vif *vif,
3935 const struct ieee80211_event *event)
3936 {
3937 struct iwl_fw_dbg_trigger_tlv *trig;
3938 struct iwl_fw_dbg_trigger_ba *ba_trig;
3939
3940 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3941 return;
3942
3943 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3944 ba_trig = (void *)trig->data;
3945 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3946 return;
3947
3948 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3949 return;
3950
3951 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3952 "Frame from %pM timed out, tid %d",
3953 event->u.ba.sta->addr, event->u.ba.tid);
3954 }
3955
3956 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3957 struct ieee80211_vif *vif,
3958 const struct ieee80211_event *event)
3959 {
3960 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3961
3962 switch (event->type) {
3963 case MLME_EVENT:
3964 iwl_mvm_event_mlme_callback(mvm, vif, event);
3965 break;
3966 case BAR_RX_EVENT:
3967 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3968 break;
3969 case BA_FRAME_TIMEOUT:
3970 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3971 break;
3972 default:
3973 break;
3974 }
3975 }
3976
3977 const struct ieee80211_ops iwl_mvm_hw_ops = {
3978 .tx = iwl_mvm_mac_tx,
3979 .ampdu_action = iwl_mvm_mac_ampdu_action,
3980 .start = iwl_mvm_mac_start,
3981 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3982 .stop = iwl_mvm_mac_stop,
3983 .add_interface = iwl_mvm_mac_add_interface,
3984 .remove_interface = iwl_mvm_mac_remove_interface,
3985 .config = iwl_mvm_mac_config,
3986 .prepare_multicast = iwl_mvm_prepare_multicast,
3987 .configure_filter = iwl_mvm_configure_filter,
3988 .config_iface_filter = iwl_mvm_config_iface_filter,
3989 .bss_info_changed = iwl_mvm_bss_info_changed,
3990 .hw_scan = iwl_mvm_mac_hw_scan,
3991 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3992 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3993 .sta_state = iwl_mvm_mac_sta_state,
3994 .sta_notify = iwl_mvm_mac_sta_notify,
3995 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3996 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3997 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3998 .sta_rc_update = iwl_mvm_sta_rc_update,
3999 .conf_tx = iwl_mvm_mac_conf_tx,
4000 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4001 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4002 .flush = iwl_mvm_mac_flush,
4003 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4004 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4005 .set_key = iwl_mvm_mac_set_key,
4006 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4007 .remain_on_channel = iwl_mvm_roc,
4008 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4009 .add_chanctx = iwl_mvm_add_chanctx,
4010 .remove_chanctx = iwl_mvm_remove_chanctx,
4011 .change_chanctx = iwl_mvm_change_chanctx,
4012 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4013 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4014 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4015
4016 .start_ap = iwl_mvm_start_ap_ibss,
4017 .stop_ap = iwl_mvm_stop_ap_ibss,
4018 .join_ibss = iwl_mvm_start_ap_ibss,
4019 .leave_ibss = iwl_mvm_stop_ap_ibss,
4020
4021 .set_tim = iwl_mvm_set_tim,
4022
4023 .channel_switch = iwl_mvm_channel_switch,
4024 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4025 .post_channel_switch = iwl_mvm_post_channel_switch,
4026
4027 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4028 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4029 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4030
4031 .event_callback = iwl_mvm_mac_event_callback,
4032
4033 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4034
4035 #ifdef CONFIG_PM_SLEEP
4036 /* look at d3.c */
4037 .suspend = iwl_mvm_suspend,
4038 .resume = iwl_mvm_resume,
4039 .set_wakeup = iwl_mvm_set_wakeup,
4040 .set_rekey_data = iwl_mvm_set_rekey_data,
4041 #if IS_ENABLED(CONFIG_IPV6)
4042 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4043 #endif
4044 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4045 #endif
4046 .get_survey = iwl_mvm_mac_get_survey,
4047 .sta_statistics = iwl_mvm_mac_sta_statistics,
4048 };
Linux kernel - Deliverables
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