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[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 if (WARN_ON(!mvm->refs[ref_type])) {
233 spin_unlock_bh(&mvm->refs_lock);
234 return;
235 }
236 mvm->refs[ref_type]--;
237 spin_unlock_bh(&mvm->refs_lock);
238 iwl_trans_unref(mvm->trans);
239 }
240
241 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
242 enum iwl_mvm_ref_type except_ref)
243 {
244 int i, j;
245
246 if (!iwl_mvm_is_d0i3_supported(mvm))
247 return;
248
249 spin_lock_bh(&mvm->refs_lock);
250 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
251 if (except_ref == i || !mvm->refs[i])
252 continue;
253
254 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
255 i, mvm->refs[i]);
256 for (j = 0; j < mvm->refs[i]; j++)
257 iwl_trans_unref(mvm->trans);
258 mvm->refs[i] = 0;
259 }
260 spin_unlock_bh(&mvm->refs_lock);
261 }
262
263 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
264 {
265 int i;
266 bool taken = false;
267
268 if (!iwl_mvm_is_d0i3_supported(mvm))
269 return true;
270
271 spin_lock_bh(&mvm->refs_lock);
272 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
273 if (mvm->refs[i]) {
274 taken = true;
275 break;
276 }
277 }
278 spin_unlock_bh(&mvm->refs_lock);
279
280 return taken;
281 }
282
283 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
284 {
285 iwl_mvm_ref(mvm, ref_type);
286
287 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
288 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
289 HZ)) {
290 WARN_ON_ONCE(1);
291 iwl_mvm_unref(mvm, ref_type);
292 return -EIO;
293 }
294
295 return 0;
296 }
297
298 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
299 {
300 int i;
301
302 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
303 for (i = 0; i < NUM_PHY_CTX; i++) {
304 mvm->phy_ctxts[i].id = i;
305 mvm->phy_ctxts[i].ref = 0;
306 }
307 }
308
309 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
310 const char *alpha2,
311 enum iwl_mcc_source src_id,
312 bool *changed)
313 {
314 struct ieee80211_regdomain *regd = NULL;
315 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
316 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
317 struct iwl_mcc_update_resp *resp;
318
319 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
320
321 lockdep_assert_held(&mvm->mutex);
322
323 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
324 if (IS_ERR_OR_NULL(resp)) {
325 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
326 PTR_ERR_OR_ZERO(resp));
327 goto out;
328 }
329
330 if (changed)
331 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
332
333 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
334 __le32_to_cpu(resp->n_channels),
335 resp->channels,
336 __le16_to_cpu(resp->mcc));
337 /* Store the return source id */
338 src_id = resp->source_id;
339 kfree(resp);
340 if (IS_ERR_OR_NULL(regd)) {
341 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
342 PTR_ERR_OR_ZERO(regd));
343 goto out;
344 }
345
346 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
347 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
348 mvm->lar_regdom_set = true;
349 mvm->mcc_src = src_id;
350
351 out:
352 return regd;
353 }
354
355 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
356 {
357 bool changed;
358 struct ieee80211_regdomain *regd;
359
360 if (!iwl_mvm_is_lar_supported(mvm))
361 return;
362
363 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
364 if (!IS_ERR_OR_NULL(regd)) {
365 /* only update the regulatory core if changed */
366 if (changed)
367 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
368
369 kfree(regd);
370 }
371 }
372
373 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
374 bool *changed)
375 {
376 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
377 iwl_mvm_is_wifi_mcc_supported(mvm) ?
378 MCC_SOURCE_GET_CURRENT :
379 MCC_SOURCE_OLD_FW, changed);
380 }
381
382 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
383 {
384 enum iwl_mcc_source used_src;
385 struct ieee80211_regdomain *regd;
386 int ret;
387 bool changed;
388 const struct ieee80211_regdomain *r =
389 rtnl_dereference(mvm->hw->wiphy->regd);
390
391 if (!r)
392 return -ENOENT;
393
394 /* save the last source in case we overwrite it below */
395 used_src = mvm->mcc_src;
396 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
397 /* Notify the firmware we support wifi location updates */
398 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
399 if (!IS_ERR_OR_NULL(regd))
400 kfree(regd);
401 }
402
403 /* Now set our last stored MCC and source */
404 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
405 &changed);
406 if (IS_ERR_OR_NULL(regd))
407 return -EIO;
408
409 /* update cfg80211 if the regdomain was changed */
410 if (changed)
411 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
412 else
413 ret = 0;
414
415 kfree(regd);
416 return ret;
417 }
418
419 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
420 {
421 struct ieee80211_hw *hw = mvm->hw;
422 int num_mac, ret, i;
423 static const u32 mvm_ciphers[] = {
424 WLAN_CIPHER_SUITE_WEP40,
425 WLAN_CIPHER_SUITE_WEP104,
426 WLAN_CIPHER_SUITE_TKIP,
427 WLAN_CIPHER_SUITE_CCMP,
428 };
429
430 /* Tell mac80211 our characteristics */
431 ieee80211_hw_set(hw, SIGNAL_DBM);
432 ieee80211_hw_set(hw, SPECTRUM_MGMT);
433 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
434 ieee80211_hw_set(hw, QUEUE_CONTROL);
435 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
436 ieee80211_hw_set(hw, SUPPORTS_PS);
437 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
438 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
439 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
440 ieee80211_hw_set(hw, CONNECTION_MONITOR);
441 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
442 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
443 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
444 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
445 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
446 if (iwl_mvm_has_new_rx_api(mvm))
447 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
448
449 if (mvm->trans->num_rx_queues > 1)
450 ieee80211_hw_set(hw, USES_RSS);
451
452 if (mvm->trans->max_skb_frags)
453 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
454
455 if (!iwl_mvm_is_dqa_supported(mvm))
456 hw->queues = mvm->first_agg_queue;
457 else
458 hw->queues = IEEE80211_MAX_QUEUES;
459 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
460 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
461 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
462 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
463 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
464 hw->rate_control_algorithm = "iwl-mvm-rs";
465 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
466 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
467
468 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 4);
469 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
470 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
471 hw->wiphy->cipher_suites = mvm->ciphers;
472
473 if (iwl_mvm_has_new_rx_api(mvm)) {
474 mvm->ciphers[hw->wiphy->n_cipher_suites] =
475 WLAN_CIPHER_SUITE_GCMP;
476 hw->wiphy->n_cipher_suites++;
477 mvm->ciphers[hw->wiphy->n_cipher_suites] =
478 WLAN_CIPHER_SUITE_GCMP_256;
479 hw->wiphy->n_cipher_suites++;
480 }
481
482 /*
483 * Enable 11w if advertised by firmware and software crypto
484 * is not enabled (as the firmware will interpret some mgmt
485 * packets, so enabling it with software crypto isn't safe)
486 */
487 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
488 !iwlwifi_mod_params.sw_crypto) {
489 ieee80211_hw_set(hw, MFP_CAPABLE);
490 mvm->ciphers[hw->wiphy->n_cipher_suites] =
491 WLAN_CIPHER_SUITE_AES_CMAC;
492 hw->wiphy->n_cipher_suites++;
493 }
494
495 /* currently FW API supports only one optional cipher scheme */
496 if (mvm->fw->cs[0].cipher) {
497 mvm->hw->n_cipher_schemes = 1;
498 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
499 mvm->ciphers[hw->wiphy->n_cipher_suites] =
500 mvm->fw->cs[0].cipher;
501 hw->wiphy->n_cipher_suites++;
502 }
503
504 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
505 hw->wiphy->features |=
506 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
507 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
508 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
509
510 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
511 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
512 hw->chanctx_data_size = sizeof(u16);
513
514 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
515 BIT(NL80211_IFTYPE_P2P_CLIENT) |
516 BIT(NL80211_IFTYPE_AP) |
517 BIT(NL80211_IFTYPE_P2P_GO) |
518 BIT(NL80211_IFTYPE_P2P_DEVICE) |
519 BIT(NL80211_IFTYPE_ADHOC);
520
521 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
522 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
523 if (iwl_mvm_is_lar_supported(mvm))
524 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
525 else
526 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
527 REGULATORY_DISABLE_BEACON_HINTS;
528
529 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
530 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
531
532 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
533
534 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
535 hw->wiphy->n_iface_combinations =
536 ARRAY_SIZE(iwl_mvm_iface_combinations);
537
538 hw->wiphy->max_remain_on_channel_duration = 10000;
539 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
540 /* we can compensate an offset of up to 3 channels = 15 MHz */
541 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
542
543 /* Extract MAC address */
544 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
545 hw->wiphy->addresses = mvm->addresses;
546 hw->wiphy->n_addresses = 1;
547
548 /* Extract additional MAC addresses if available */
549 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
550 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
551
552 for (i = 1; i < num_mac; i++) {
553 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
554 ETH_ALEN);
555 mvm->addresses[i].addr[5]++;
556 hw->wiphy->n_addresses++;
557 }
558
559 iwl_mvm_reset_phy_ctxts(mvm);
560
561 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
562
563 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
564
565 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
566 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
567 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
568
569 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
570 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
571 else
572 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
573
574 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
575 hw->wiphy->bands[NL80211_BAND_2GHZ] =
576 &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
577 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
578 hw->wiphy->bands[NL80211_BAND_5GHZ] =
579 &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
580
581 if (fw_has_capa(&mvm->fw->ucode_capa,
582 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
583 fw_has_api(&mvm->fw->ucode_capa,
584 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
585 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
586 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
587 }
588
589 hw->wiphy->hw_version = mvm->trans->hw_id;
590
591 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
592 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
593 else
594 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
595
596 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
597 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
598 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
599 /* we create the 802.11 header and zero length SSID IE. */
600 hw->wiphy->max_sched_scan_ie_len =
601 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
602 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
603 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
604
605 /*
606 * the firmware uses u8 for num of iterations, but 0xff is saved for
607 * infinite loop, so the maximum number of iterations is actually 254.
608 */
609 hw->wiphy->max_sched_scan_plan_iterations = 254;
610
611 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
612 NL80211_FEATURE_LOW_PRIORITY_SCAN |
613 NL80211_FEATURE_P2P_GO_OPPPS |
614 NL80211_FEATURE_DYNAMIC_SMPS |
615 NL80211_FEATURE_STATIC_SMPS |
616 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
617
618 if (fw_has_capa(&mvm->fw->ucode_capa,
619 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
620 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
621 if (fw_has_capa(&mvm->fw->ucode_capa,
622 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
623 hw->wiphy->features |= NL80211_FEATURE_QUIET;
624
625 if (fw_has_capa(&mvm->fw->ucode_capa,
626 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
627 hw->wiphy->features |=
628 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
629
630 if (fw_has_capa(&mvm->fw->ucode_capa,
631 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
632 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
633
634 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
635
636 #ifdef CONFIG_PM_SLEEP
637 if (iwl_mvm_is_d0i3_supported(mvm) &&
638 device_can_wakeup(mvm->trans->dev)) {
639 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
640 hw->wiphy->wowlan = &mvm->wowlan;
641 }
642
643 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
644 mvm->trans->ops->d3_suspend &&
645 mvm->trans->ops->d3_resume &&
646 device_can_wakeup(mvm->trans->dev)) {
647 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
648 WIPHY_WOWLAN_DISCONNECT |
649 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
650 WIPHY_WOWLAN_RFKILL_RELEASE |
651 WIPHY_WOWLAN_NET_DETECT;
652 if (!iwlwifi_mod_params.sw_crypto)
653 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
654 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
655 WIPHY_WOWLAN_4WAY_HANDSHAKE;
656
657 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
658 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
659 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
660 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
661 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
662 hw->wiphy->wowlan = &mvm->wowlan;
663 }
664 #endif
665
666 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
667 /* assign default bcast filtering configuration */
668 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
669 #endif
670
671 ret = iwl_mvm_leds_init(mvm);
672 if (ret)
673 return ret;
674
675 if (fw_has_capa(&mvm->fw->ucode_capa,
676 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
677 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
678 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
679 ieee80211_hw_set(hw, TDLS_WIDER_BW);
680 }
681
682 if (fw_has_capa(&mvm->fw->ucode_capa,
683 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
684 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
685 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
686 }
687
688 hw->netdev_features |= mvm->cfg->features;
689 if (!iwl_mvm_is_csum_supported(mvm)) {
690 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
691 NETIF_F_RXCSUM);
692 /* We may support SW TX CSUM */
693 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
694 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
695 }
696
697 ret = ieee80211_register_hw(mvm->hw);
698 if (ret)
699 iwl_mvm_leds_exit(mvm);
700
701 return ret;
702 }
703
704 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
705 struct ieee80211_sta *sta,
706 struct sk_buff *skb)
707 {
708 struct iwl_mvm_sta *mvmsta;
709 bool defer = false;
710
711 /*
712 * double check the IN_D0I3 flag both before and after
713 * taking the spinlock, in order to prevent taking
714 * the spinlock when not needed.
715 */
716 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
717 return false;
718
719 spin_lock(&mvm->d0i3_tx_lock);
720 /*
721 * testing the flag again ensures the skb dequeue
722 * loop (on d0i3 exit) hasn't run yet.
723 */
724 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
725 goto out;
726
727 mvmsta = iwl_mvm_sta_from_mac80211(sta);
728 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
729 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
730 goto out;
731
732 __skb_queue_tail(&mvm->d0i3_tx, skb);
733 ieee80211_stop_queues(mvm->hw);
734
735 /* trigger wakeup */
736 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
737 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
738
739 defer = true;
740 out:
741 spin_unlock(&mvm->d0i3_tx_lock);
742 return defer;
743 }
744
745 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
746 struct ieee80211_tx_control *control,
747 struct sk_buff *skb)
748 {
749 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
750 struct ieee80211_sta *sta = control->sta;
751 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
752 struct ieee80211_hdr *hdr = (void *)skb->data;
753
754 if (iwl_mvm_is_radio_killed(mvm)) {
755 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
756 goto drop;
757 }
758
759 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
760 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
761 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
762 goto drop;
763
764 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
765 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
766 ieee80211_is_mgmt(hdr->frame_control) &&
767 !ieee80211_is_deauth(hdr->frame_control) &&
768 !ieee80211_is_disassoc(hdr->frame_control) &&
769 !ieee80211_is_action(hdr->frame_control)))
770 sta = NULL;
771
772 if (sta) {
773 if (iwl_mvm_defer_tx(mvm, sta, skb))
774 return;
775 if (iwl_mvm_tx_skb(mvm, skb, sta))
776 goto drop;
777 return;
778 }
779
780 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
781 goto drop;
782 return;
783 drop:
784 ieee80211_free_txskb(hw, skb);
785 }
786
787 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
788 {
789 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
790 return false;
791 return true;
792 }
793
794 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
795 {
796 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
797 return false;
798 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
799 return true;
800
801 /* enabled by default */
802 return true;
803 }
804
805 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
806 do { \
807 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
808 break; \
809 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
810 } while (0)
811
812 static void
813 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
814 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
815 enum ieee80211_ampdu_mlme_action action)
816 {
817 struct iwl_fw_dbg_trigger_tlv *trig;
818 struct iwl_fw_dbg_trigger_ba *ba_trig;
819
820 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
821 return;
822
823 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
824 ba_trig = (void *)trig->data;
825
826 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
827 return;
828
829 switch (action) {
830 case IEEE80211_AMPDU_TX_OPERATIONAL: {
831 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
832 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
833
834 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
835 "TX AGG START: MAC %pM tid %d ssn %d\n",
836 sta->addr, tid, tid_data->ssn);
837 break;
838 }
839 case IEEE80211_AMPDU_TX_STOP_CONT:
840 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
841 "TX AGG STOP: MAC %pM tid %d\n",
842 sta->addr, tid);
843 break;
844 case IEEE80211_AMPDU_RX_START:
845 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
846 "RX AGG START: MAC %pM tid %d ssn %d\n",
847 sta->addr, tid, rx_ba_ssn);
848 break;
849 case IEEE80211_AMPDU_RX_STOP:
850 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
851 "RX AGG STOP: MAC %pM tid %d\n",
852 sta->addr, tid);
853 break;
854 default:
855 break;
856 }
857 }
858
859 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
860 struct ieee80211_vif *vif,
861 struct ieee80211_ampdu_params *params)
862 {
863 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
864 int ret;
865 bool tx_agg_ref = false;
866 struct ieee80211_sta *sta = params->sta;
867 enum ieee80211_ampdu_mlme_action action = params->action;
868 u16 tid = params->tid;
869 u16 *ssn = &params->ssn;
870 u8 buf_size = params->buf_size;
871 bool amsdu = params->amsdu;
872 u16 timeout = params->timeout;
873
874 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
875 sta->addr, tid, action);
876
877 if (!(mvm->nvm_data->sku_cap_11n_enable))
878 return -EACCES;
879
880 /* return from D0i3 before starting a new Tx aggregation */
881 switch (action) {
882 case IEEE80211_AMPDU_TX_START:
883 case IEEE80211_AMPDU_TX_STOP_CONT:
884 case IEEE80211_AMPDU_TX_STOP_FLUSH:
885 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
886 case IEEE80211_AMPDU_TX_OPERATIONAL:
887 /*
888 * for tx start, wait synchronously until D0i3 exit to
889 * get the correct sequence number for the tid.
890 * additionally, some other ampdu actions use direct
891 * target access, which is not handled automatically
892 * by the trans layer (unlike commands), so wait for
893 * d0i3 exit in these cases as well.
894 */
895 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
896 if (ret)
897 return ret;
898
899 tx_agg_ref = true;
900 break;
901 default:
902 break;
903 }
904
905 mutex_lock(&mvm->mutex);
906
907 switch (action) {
908 case IEEE80211_AMPDU_RX_START:
909 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
910 ret = -EINVAL;
911 break;
912 }
913 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
914 timeout);
915 break;
916 case IEEE80211_AMPDU_RX_STOP:
917 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
918 timeout);
919 break;
920 case IEEE80211_AMPDU_TX_START:
921 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
922 ret = -EINVAL;
923 break;
924 }
925 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
926 break;
927 case IEEE80211_AMPDU_TX_STOP_CONT:
928 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
929 break;
930 case IEEE80211_AMPDU_TX_STOP_FLUSH:
931 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
932 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
933 break;
934 case IEEE80211_AMPDU_TX_OPERATIONAL:
935 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
936 buf_size, amsdu);
937 break;
938 default:
939 WARN_ON_ONCE(1);
940 ret = -EINVAL;
941 break;
942 }
943
944 if (!ret) {
945 u16 rx_ba_ssn = 0;
946
947 if (action == IEEE80211_AMPDU_RX_START)
948 rx_ba_ssn = *ssn;
949
950 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
951 rx_ba_ssn, action);
952 }
953 mutex_unlock(&mvm->mutex);
954
955 /*
956 * If the tid is marked as started, we won't use it for offloaded
957 * traffic on the next D0i3 entry. It's safe to unref.
958 */
959 if (tx_agg_ref)
960 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
961
962 return ret;
963 }
964
965 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
966 struct ieee80211_vif *vif)
967 {
968 struct iwl_mvm *mvm = data;
969 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
970
971 mvmvif->uploaded = false;
972 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
973
974 spin_lock_bh(&mvm->time_event_lock);
975 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
976 spin_unlock_bh(&mvm->time_event_lock);
977
978 mvmvif->phy_ctxt = NULL;
979 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
980 }
981
982 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
983 {
984 /* clear the D3 reconfig, we only need it to avoid dumping a
985 * firmware coredump on reconfiguration, we shouldn't do that
986 * on D3->D0 transition
987 */
988 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
989 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
990 iwl_mvm_fw_error_dump(mvm);
991 }
992
993 /* cleanup all stale references (scan, roc), but keep the
994 * ucode_down ref until reconfig is complete
995 */
996 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
997
998 iwl_mvm_stop_device(mvm);
999
1000 mvm->scan_status = 0;
1001 mvm->ps_disabled = false;
1002 mvm->calibrating = false;
1003
1004 /* just in case one was running */
1005 iwl_mvm_cleanup_roc_te(mvm);
1006 ieee80211_remain_on_channel_expired(mvm->hw);
1007
1008 /*
1009 * cleanup all interfaces, even inactive ones, as some might have
1010 * gone down during the HW restart
1011 */
1012 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1013
1014 mvm->p2p_device_vif = NULL;
1015 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1016
1017 iwl_mvm_reset_phy_ctxts(mvm);
1018 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1019 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1020 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1021 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1022 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1023 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1024
1025 ieee80211_wake_queues(mvm->hw);
1026
1027 /* clear any stale d0i3 state */
1028 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1029
1030 mvm->vif_count = 0;
1031 mvm->rx_ba_sessions = 0;
1032 mvm->fw_dbg_conf = FW_DBG_INVALID;
1033
1034 /* keep statistics ticking */
1035 iwl_mvm_accu_radio_stats(mvm);
1036 }
1037
1038 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1039 {
1040 int ret;
1041
1042 lockdep_assert_held(&mvm->mutex);
1043
1044 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1045 /* Clean up some internal and mac80211 state on restart */
1046 iwl_mvm_restart_cleanup(mvm);
1047 } else {
1048 /* Hold the reference to prevent runtime suspend while
1049 * the start procedure runs. It's a bit confusing
1050 * that the UCODE_DOWN reference is taken, but it just
1051 * means "UCODE is not UP yet". ( TODO: rename this
1052 * reference).
1053 */
1054 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1055 }
1056 ret = iwl_mvm_up(mvm);
1057
1058 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1059 /* Something went wrong - we need to finish some cleanup
1060 * that normally iwl_mvm_mac_restart_complete() below
1061 * would do.
1062 */
1063 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1064 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1065 }
1066
1067 return ret;
1068 }
1069
1070 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1071 {
1072 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1073 int ret;
1074
1075 /* Some hw restart cleanups must not hold the mutex */
1076 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1077 /*
1078 * Make sure we are out of d0i3. This is needed
1079 * to make sure the reference accounting is correct
1080 * (and there is no stale d0i3_exit_work).
1081 */
1082 wait_event_timeout(mvm->d0i3_exit_waitq,
1083 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1084 &mvm->status),
1085 HZ);
1086 }
1087
1088 mutex_lock(&mvm->mutex);
1089 ret = __iwl_mvm_mac_start(mvm);
1090 mutex_unlock(&mvm->mutex);
1091
1092 return ret;
1093 }
1094
1095 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1096 {
1097 int ret;
1098
1099 mutex_lock(&mvm->mutex);
1100
1101 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1102 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1103 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1104 if (ret)
1105 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1106 ret);
1107
1108 /* allow transport/FW low power modes */
1109 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1110
1111 /*
1112 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1113 * of packets the FW sent out, so we must reconnect.
1114 */
1115 iwl_mvm_teardown_tdls_peers(mvm);
1116
1117 mutex_unlock(&mvm->mutex);
1118 }
1119
1120 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1121 {
1122 if (iwl_mvm_is_d0i3_supported(mvm) &&
1123 iwl_mvm_enter_d0i3_on_suspend(mvm))
1124 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1125 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1126 &mvm->status),
1127 HZ),
1128 "D0i3 exit on resume timed out\n");
1129 }
1130
1131 static void
1132 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1133 enum ieee80211_reconfig_type reconfig_type)
1134 {
1135 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1136
1137 switch (reconfig_type) {
1138 case IEEE80211_RECONFIG_TYPE_RESTART:
1139 iwl_mvm_restart_complete(mvm);
1140 break;
1141 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1142 iwl_mvm_resume_complete(mvm);
1143 break;
1144 }
1145 }
1146
1147 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1148 {
1149 lockdep_assert_held(&mvm->mutex);
1150
1151 /* firmware counters are obviously reset now, but we shouldn't
1152 * partially track so also clear the fw_reset_accu counters.
1153 */
1154 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1155
1156 /* async_handlers_wk is now blocked */
1157
1158 /*
1159 * The work item could be running or queued if the
1160 * ROC time event stops just as we get here.
1161 */
1162 flush_work(&mvm->roc_done_wk);
1163
1164 iwl_mvm_stop_device(mvm);
1165
1166 iwl_mvm_async_handlers_purge(mvm);
1167 /* async_handlers_list is empty and will stay empty: HW is stopped */
1168
1169 /* the fw is stopped, the aux sta is dead: clean up driver state */
1170 iwl_mvm_del_aux_sta(mvm);
1171
1172 iwl_free_fw_paging(mvm);
1173
1174 /*
1175 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1176 * won't be called in this case).
1177 * But make sure to cleanup interfaces that have gone down before/during
1178 * HW restart was requested.
1179 */
1180 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1181 ieee80211_iterate_interfaces(mvm->hw, 0,
1182 iwl_mvm_cleanup_iterator, mvm);
1183
1184 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1185 * make sure there's nothing left there and warn if any is found.
1186 */
1187 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1188 int i;
1189
1190 for (i = 0; i < mvm->max_scans; i++) {
1191 if (WARN_ONCE(mvm->scan_uid_status[i],
1192 "UMAC scan UID %d status was not cleaned\n",
1193 i))
1194 mvm->scan_uid_status[i] = 0;
1195 }
1196 }
1197 }
1198
1199 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1200 {
1201 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1202
1203 flush_work(&mvm->d0i3_exit_work);
1204 flush_work(&mvm->async_handlers_wk);
1205 flush_work(&mvm->add_stream_wk);
1206 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1207 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1208 cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1209 iwl_mvm_free_fw_dump_desc(mvm);
1210
1211 mutex_lock(&mvm->mutex);
1212 __iwl_mvm_mac_stop(mvm);
1213 mutex_unlock(&mvm->mutex);
1214
1215 /*
1216 * The worker might have been waiting for the mutex, let it run and
1217 * discover that its list is now empty.
1218 */
1219 cancel_work_sync(&mvm->async_handlers_wk);
1220 }
1221
1222 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1223 {
1224 u16 i;
1225
1226 lockdep_assert_held(&mvm->mutex);
1227
1228 for (i = 0; i < NUM_PHY_CTX; i++)
1229 if (!mvm->phy_ctxts[i].ref)
1230 return &mvm->phy_ctxts[i];
1231
1232 IWL_ERR(mvm, "No available PHY context\n");
1233 return NULL;
1234 }
1235
1236 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1237 s16 tx_power)
1238 {
1239 struct iwl_dev_tx_power_cmd cmd = {
1240 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1241 .v2.mac_context_id =
1242 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1243 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1244 };
1245 int len = sizeof(cmd);
1246
1247 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1248 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1249
1250 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1251 len = sizeof(cmd.v2);
1252
1253 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1254 }
1255
1256 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1257 struct ieee80211_vif *vif)
1258 {
1259 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1260 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1261 int ret;
1262
1263 mvmvif->mvm = mvm;
1264
1265 /*
1266 * make sure D0i3 exit is completed, otherwise a target access
1267 * during tx queue configuration could be done when still in
1268 * D0i3 state.
1269 */
1270 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1271 if (ret)
1272 return ret;
1273
1274 /*
1275 * Not much to do here. The stack will not allow interface
1276 * types or combinations that we didn't advertise, so we
1277 * don't really have to check the types.
1278 */
1279
1280 mutex_lock(&mvm->mutex);
1281
1282 /* make sure that beacon statistics don't go backwards with FW reset */
1283 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1284 mvmvif->beacon_stats.accu_num_beacons +=
1285 mvmvif->beacon_stats.num_beacons;
1286
1287 /* Allocate resources for the MAC context, and add it to the fw */
1288 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1289 if (ret)
1290 goto out_unlock;
1291
1292 /* Counting number of interfaces is needed for legacy PM */
1293 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1294 mvm->vif_count++;
1295
1296 /*
1297 * The AP binding flow can be done only after the beacon
1298 * template is configured (which happens only in the mac80211
1299 * start_ap() flow), and adding the broadcast station can happen
1300 * only after the binding.
1301 * In addition, since modifying the MAC before adding a bcast
1302 * station is not allowed by the FW, delay the adding of MAC context to
1303 * the point where we can also add the bcast station.
1304 * In short: there's not much we can do at this point, other than
1305 * allocating resources :)
1306 */
1307 if (vif->type == NL80211_IFTYPE_AP ||
1308 vif->type == NL80211_IFTYPE_ADHOC) {
1309 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1310 if (ret) {
1311 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1312 goto out_release;
1313 }
1314
1315 iwl_mvm_vif_dbgfs_register(mvm, vif);
1316 goto out_unlock;
1317 }
1318
1319 mvmvif->features |= hw->netdev_features;
1320
1321 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1322 if (ret)
1323 goto out_release;
1324
1325 ret = iwl_mvm_power_update_mac(mvm);
1326 if (ret)
1327 goto out_remove_mac;
1328
1329 /* beacon filtering */
1330 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1331 if (ret)
1332 goto out_remove_mac;
1333
1334 if (!mvm->bf_allowed_vif &&
1335 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1336 mvm->bf_allowed_vif = mvmvif;
1337 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1338 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1339 }
1340
1341 /*
1342 * P2P_DEVICE interface does not have a channel context assigned to it,
1343 * so a dedicated PHY context is allocated to it and the corresponding
1344 * MAC context is bound to it at this stage.
1345 */
1346 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1347
1348 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1349 if (!mvmvif->phy_ctxt) {
1350 ret = -ENOSPC;
1351 goto out_free_bf;
1352 }
1353
1354 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1355 ret = iwl_mvm_binding_add_vif(mvm, vif);
1356 if (ret)
1357 goto out_unref_phy;
1358
1359 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1360 if (ret)
1361 goto out_unbind;
1362
1363 /* Save a pointer to p2p device vif, so it can later be used to
1364 * update the p2p device MAC when a GO is started/stopped */
1365 mvm->p2p_device_vif = vif;
1366 }
1367
1368 iwl_mvm_vif_dbgfs_register(mvm, vif);
1369 goto out_unlock;
1370
1371 out_unbind:
1372 iwl_mvm_binding_remove_vif(mvm, vif);
1373 out_unref_phy:
1374 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1375 out_free_bf:
1376 if (mvm->bf_allowed_vif == mvmvif) {
1377 mvm->bf_allowed_vif = NULL;
1378 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1379 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1380 }
1381 out_remove_mac:
1382 mvmvif->phy_ctxt = NULL;
1383 iwl_mvm_mac_ctxt_remove(mvm, vif);
1384 out_release:
1385 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1386 mvm->vif_count--;
1387
1388 iwl_mvm_mac_ctxt_release(mvm, vif);
1389 out_unlock:
1390 mutex_unlock(&mvm->mutex);
1391
1392 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1393
1394 return ret;
1395 }
1396
1397 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1398 struct ieee80211_vif *vif)
1399 {
1400 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1401
1402 if (tfd_msk) {
1403 /*
1404 * mac80211 first removes all the stations of the vif and
1405 * then removes the vif. When it removes a station it also
1406 * flushes the AMPDU session. So by now, all the AMPDU sessions
1407 * of all the stations of this vif are closed, and the queues
1408 * of these AMPDU sessions are properly closed.
1409 * We still need to take care of the shared queues of the vif.
1410 * Flush them here.
1411 */
1412 mutex_lock(&mvm->mutex);
1413 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1414 mutex_unlock(&mvm->mutex);
1415
1416 /*
1417 * There are transports that buffer a few frames in the host.
1418 * For these, the flush above isn't enough since while we were
1419 * flushing, the transport might have sent more frames to the
1420 * device. To solve this, wait here until the transport is
1421 * empty. Technically, this could have replaced the flush
1422 * above, but flush is much faster than draining. So flush
1423 * first, and drain to make sure we have no frames in the
1424 * transport anymore.
1425 * If a station still had frames on the shared queues, it is
1426 * already marked as draining, so to complete the draining, we
1427 * just need to wait until the transport is empty.
1428 */
1429 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1430 }
1431
1432 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1433 /*
1434 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1435 * We assume here that all the packets sent to the OFFCHANNEL
1436 * queue are sent in ROC session.
1437 */
1438 flush_work(&mvm->roc_done_wk);
1439 } else {
1440 /*
1441 * By now, all the AC queues are empty. The AGG queues are
1442 * empty too. We already got all the Tx responses for all the
1443 * packets in the queues. The drain work can have been
1444 * triggered. Flush it.
1445 */
1446 flush_work(&mvm->sta_drained_wk);
1447 }
1448 }
1449
1450 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1451 struct ieee80211_vif *vif)
1452 {
1453 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1454 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1455
1456 iwl_mvm_prepare_mac_removal(mvm, vif);
1457
1458 mutex_lock(&mvm->mutex);
1459
1460 if (mvm->bf_allowed_vif == mvmvif) {
1461 mvm->bf_allowed_vif = NULL;
1462 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1463 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1464 }
1465
1466 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1467
1468 /*
1469 * For AP/GO interface, the tear down of the resources allocated to the
1470 * interface is be handled as part of the stop_ap flow.
1471 */
1472 if (vif->type == NL80211_IFTYPE_AP ||
1473 vif->type == NL80211_IFTYPE_ADHOC) {
1474 #ifdef CONFIG_NL80211_TESTMODE
1475 if (vif == mvm->noa_vif) {
1476 mvm->noa_vif = NULL;
1477 mvm->noa_duration = 0;
1478 }
1479 #endif
1480 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1481 goto out_release;
1482 }
1483
1484 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1485 mvm->p2p_device_vif = NULL;
1486 iwl_mvm_rm_bcast_sta(mvm, vif);
1487 iwl_mvm_binding_remove_vif(mvm, vif);
1488 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1489 mvmvif->phy_ctxt = NULL;
1490 }
1491
1492 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1493 mvm->vif_count--;
1494
1495 iwl_mvm_power_update_mac(mvm);
1496 iwl_mvm_mac_ctxt_remove(mvm, vif);
1497
1498 out_release:
1499 iwl_mvm_mac_ctxt_release(mvm, vif);
1500 mutex_unlock(&mvm->mutex);
1501 }
1502
1503 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1504 {
1505 return 0;
1506 }
1507
1508 struct iwl_mvm_mc_iter_data {
1509 struct iwl_mvm *mvm;
1510 int port_id;
1511 };
1512
1513 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1514 struct ieee80211_vif *vif)
1515 {
1516 struct iwl_mvm_mc_iter_data *data = _data;
1517 struct iwl_mvm *mvm = data->mvm;
1518 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1519 int ret, len;
1520
1521 /* if we don't have free ports, mcast frames will be dropped */
1522 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1523 return;
1524
1525 if (vif->type != NL80211_IFTYPE_STATION ||
1526 !vif->bss_conf.assoc)
1527 return;
1528
1529 cmd->port_id = data->port_id++;
1530 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1531 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1532
1533 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1534 if (ret)
1535 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1536 }
1537
1538 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1539 {
1540 struct iwl_mvm_mc_iter_data iter_data = {
1541 .mvm = mvm,
1542 };
1543
1544 lockdep_assert_held(&mvm->mutex);
1545
1546 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1547 return;
1548
1549 ieee80211_iterate_active_interfaces_atomic(
1550 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1551 iwl_mvm_mc_iface_iterator, &iter_data);
1552 }
1553
1554 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1555 struct netdev_hw_addr_list *mc_list)
1556 {
1557 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1558 struct iwl_mcast_filter_cmd *cmd;
1559 struct netdev_hw_addr *addr;
1560 int addr_count;
1561 bool pass_all;
1562 int len;
1563
1564 addr_count = netdev_hw_addr_list_count(mc_list);
1565 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1566 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1567 if (pass_all)
1568 addr_count = 0;
1569
1570 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1571 cmd = kzalloc(len, GFP_ATOMIC);
1572 if (!cmd)
1573 return 0;
1574
1575 if (pass_all) {
1576 cmd->pass_all = 1;
1577 return (u64)(unsigned long)cmd;
1578 }
1579
1580 netdev_hw_addr_list_for_each(addr, mc_list) {
1581 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1582 cmd->count, addr->addr);
1583 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1584 addr->addr, ETH_ALEN);
1585 cmd->count++;
1586 }
1587
1588 return (u64)(unsigned long)cmd;
1589 }
1590
1591 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1592 unsigned int changed_flags,
1593 unsigned int *total_flags,
1594 u64 multicast)
1595 {
1596 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1597 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1598
1599 mutex_lock(&mvm->mutex);
1600
1601 /* replace previous configuration */
1602 kfree(mvm->mcast_filter_cmd);
1603 mvm->mcast_filter_cmd = cmd;
1604
1605 if (!cmd)
1606 goto out;
1607
1608 iwl_mvm_recalc_multicast(mvm);
1609 out:
1610 mutex_unlock(&mvm->mutex);
1611 *total_flags = 0;
1612 }
1613
1614 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1615 struct ieee80211_vif *vif,
1616 unsigned int filter_flags,
1617 unsigned int changed_flags)
1618 {
1619 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1620
1621 /* We support only filter for probe requests */
1622 if (!(changed_flags & FIF_PROBE_REQ))
1623 return;
1624
1625 /* Supported only for p2p client interfaces */
1626 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1627 !vif->p2p)
1628 return;
1629
1630 mutex_lock(&mvm->mutex);
1631 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1632 mutex_unlock(&mvm->mutex);
1633 }
1634
1635 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1636 struct iwl_bcast_iter_data {
1637 struct iwl_mvm *mvm;
1638 struct iwl_bcast_filter_cmd *cmd;
1639 u8 current_filter;
1640 };
1641
1642 static void
1643 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1644 const struct iwl_fw_bcast_filter *in_filter,
1645 struct iwl_fw_bcast_filter *out_filter)
1646 {
1647 struct iwl_fw_bcast_filter_attr *attr;
1648 int i;
1649
1650 memcpy(out_filter, in_filter, sizeof(*out_filter));
1651
1652 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1653 attr = &out_filter->attrs[i];
1654
1655 if (!attr->mask)
1656 break;
1657
1658 switch (attr->reserved1) {
1659 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1660 if (vif->bss_conf.arp_addr_cnt != 1) {
1661 attr->mask = 0;
1662 continue;
1663 }
1664
1665 attr->val = vif->bss_conf.arp_addr_list[0];
1666 break;
1667 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1668 attr->val = *(__be32 *)&vif->addr[2];
1669 break;
1670 default:
1671 break;
1672 }
1673 attr->reserved1 = 0;
1674 out_filter->num_attrs++;
1675 }
1676 }
1677
1678 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1679 struct ieee80211_vif *vif)
1680 {
1681 struct iwl_bcast_iter_data *data = _data;
1682 struct iwl_mvm *mvm = data->mvm;
1683 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1684 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1685 struct iwl_fw_bcast_mac *bcast_mac;
1686 int i;
1687
1688 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1689 return;
1690
1691 bcast_mac = &cmd->macs[mvmvif->id];
1692
1693 /*
1694 * enable filtering only for associated stations, but not for P2P
1695 * Clients
1696 */
1697 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1698 !vif->bss_conf.assoc)
1699 return;
1700
1701 bcast_mac->default_discard = 1;
1702
1703 /* copy all configured filters */
1704 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1705 /*
1706 * Make sure we don't exceed our filters limit.
1707 * if there is still a valid filter to be configured,
1708 * be on the safe side and just allow bcast for this mac.
1709 */
1710 if (WARN_ON_ONCE(data->current_filter >=
1711 ARRAY_SIZE(cmd->filters))) {
1712 bcast_mac->default_discard = 0;
1713 bcast_mac->attached_filters = 0;
1714 break;
1715 }
1716
1717 iwl_mvm_set_bcast_filter(vif,
1718 &mvm->bcast_filters[i],
1719 &cmd->filters[data->current_filter]);
1720
1721 /* skip current filter if it contains no attributes */
1722 if (!cmd->filters[data->current_filter].num_attrs)
1723 continue;
1724
1725 /* attach the filter to current mac */
1726 bcast_mac->attached_filters |=
1727 cpu_to_le16(BIT(data->current_filter));
1728
1729 data->current_filter++;
1730 }
1731 }
1732
1733 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1734 struct iwl_bcast_filter_cmd *cmd)
1735 {
1736 struct iwl_bcast_iter_data iter_data = {
1737 .mvm = mvm,
1738 .cmd = cmd,
1739 };
1740
1741 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1742 return false;
1743
1744 memset(cmd, 0, sizeof(*cmd));
1745 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1746 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1747
1748 #ifdef CONFIG_IWLWIFI_DEBUGFS
1749 /* use debugfs filters/macs if override is configured */
1750 if (mvm->dbgfs_bcast_filtering.override) {
1751 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1752 sizeof(cmd->filters));
1753 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1754 sizeof(cmd->macs));
1755 return true;
1756 }
1757 #endif
1758
1759 /* if no filters are configured, do nothing */
1760 if (!mvm->bcast_filters)
1761 return false;
1762
1763 /* configure and attach these filters for each associated sta vif */
1764 ieee80211_iterate_active_interfaces(
1765 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1766 iwl_mvm_bcast_filter_iterator, &iter_data);
1767
1768 return true;
1769 }
1770
1771 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1772 {
1773 struct iwl_bcast_filter_cmd cmd;
1774
1775 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1776 return 0;
1777
1778 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1779 return 0;
1780
1781 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1782 sizeof(cmd), &cmd);
1783 }
1784 #else
1785 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1786 {
1787 return 0;
1788 }
1789 #endif
1790
1791 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1792 struct ieee80211_vif *vif)
1793 {
1794 struct iwl_mu_group_mgmt_cmd cmd = {};
1795
1796 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1797 WLAN_MEMBERSHIP_LEN);
1798 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1799 WLAN_USER_POSITION_LEN);
1800
1801 return iwl_mvm_send_cmd_pdu(mvm,
1802 WIDE_ID(DATA_PATH_GROUP,
1803 UPDATE_MU_GROUPS_CMD),
1804 0, sizeof(cmd), &cmd);
1805 }
1806
1807 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1808 struct ieee80211_vif *vif)
1809 {
1810 if (vif->mu_mimo_owner) {
1811 struct iwl_mu_group_mgmt_notif *notif = _data;
1812
1813 /*
1814 * MU-MIMO Group Id action frame is little endian. We treat
1815 * the data received from firmware as if it came from the
1816 * action frame, so no conversion is needed.
1817 */
1818 ieee80211_update_mu_groups(vif,
1819 (u8 *)&notif->membership_status,
1820 (u8 *)&notif->user_position);
1821 }
1822 }
1823
1824 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1825 struct iwl_rx_cmd_buffer *rxb)
1826 {
1827 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1828 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1829
1830 ieee80211_iterate_active_interfaces_atomic(
1831 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1832 iwl_mvm_mu_mimo_iface_iterator, notif);
1833 }
1834
1835 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1836 struct ieee80211_vif *vif,
1837 struct ieee80211_bss_conf *bss_conf,
1838 u32 changes)
1839 {
1840 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1841 int ret;
1842
1843 /*
1844 * Re-calculate the tsf id, as the master-slave relations depend on the
1845 * beacon interval, which was not known when the station interface was
1846 * added.
1847 */
1848 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1849 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1850
1851 if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1852 mvmvif->lqm_active)
1853 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1854 0, 0);
1855
1856 /*
1857 * If we're not associated yet, take the (new) BSSID before associating
1858 * so the firmware knows. If we're already associated, then use the old
1859 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1860 * branch for disassociation below.
1861 */
1862 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1863 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1864
1865 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1866 if (ret)
1867 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1868
1869 /* after sending it once, adopt mac80211 data */
1870 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1871 mvmvif->associated = bss_conf->assoc;
1872
1873 if (changes & BSS_CHANGED_ASSOC) {
1874 if (bss_conf->assoc) {
1875 /* clear statistics to get clean beacon counter */
1876 iwl_mvm_request_statistics(mvm, true);
1877 memset(&mvmvif->beacon_stats, 0,
1878 sizeof(mvmvif->beacon_stats));
1879
1880 /* add quota for this interface */
1881 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1882 if (ret) {
1883 IWL_ERR(mvm, "failed to update quotas\n");
1884 return;
1885 }
1886
1887 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1888 &mvm->status)) {
1889 /*
1890 * If we're restarting then the firmware will
1891 * obviously have lost synchronisation with
1892 * the AP. It will attempt to synchronise by
1893 * itself, but we can make it more reliable by
1894 * scheduling a session protection time event.
1895 *
1896 * The firmware needs to receive a beacon to
1897 * catch up with synchronisation, use 110% of
1898 * the beacon interval.
1899 *
1900 * Set a large maximum delay to allow for more
1901 * than a single interface.
1902 */
1903 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1904 iwl_mvm_protect_session(mvm, vif, dur, dur,
1905 5 * dur, false);
1906 }
1907
1908 iwl_mvm_sf_update(mvm, vif, false);
1909 iwl_mvm_power_vif_assoc(mvm, vif);
1910 if (vif->p2p) {
1911 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1912 iwl_mvm_update_smps(mvm, vif,
1913 IWL_MVM_SMPS_REQ_PROT,
1914 IEEE80211_SMPS_DYNAMIC);
1915 }
1916 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1917 /*
1918 * If update fails - SF might be running in associated
1919 * mode while disassociated - which is forbidden.
1920 */
1921 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1922 "Failed to update SF upon disassociation\n");
1923
1924 /* remove AP station now that the MAC is unassoc */
1925 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1926 if (ret)
1927 IWL_ERR(mvm, "failed to remove AP station\n");
1928
1929 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1930 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1931 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1932 /* remove quota for this interface */
1933 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1934 if (ret)
1935 IWL_ERR(mvm, "failed to update quotas\n");
1936
1937 if (vif->p2p)
1938 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1939
1940 /* this will take the cleared BSSID from bss_conf */
1941 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1942 if (ret)
1943 IWL_ERR(mvm,
1944 "failed to update MAC %pM (clear after unassoc)\n",
1945 vif->addr);
1946 }
1947
1948 /*
1949 * The firmware tracks the MU-MIMO group on its own.
1950 * However, on HW restart we should restore this data.
1951 */
1952 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1953 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
1954 ret = iwl_mvm_update_mu_groups(mvm, vif);
1955 if (ret)
1956 IWL_ERR(mvm,
1957 "failed to update VHT MU_MIMO groups\n");
1958 }
1959
1960 iwl_mvm_recalc_multicast(mvm);
1961 iwl_mvm_configure_bcast_filter(mvm);
1962
1963 /* reset rssi values */
1964 mvmvif->bf_data.ave_beacon_signal = 0;
1965
1966 iwl_mvm_bt_coex_vif_change(mvm);
1967 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1968 IEEE80211_SMPS_AUTOMATIC);
1969 if (fw_has_capa(&mvm->fw->ucode_capa,
1970 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1971 iwl_mvm_config_scan(mvm);
1972 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1973 /*
1974 * We received a beacon _after_ association so
1975 * remove the session protection.
1976 */
1977 iwl_mvm_remove_time_event(mvm, mvmvif,
1978 &mvmvif->time_event_data);
1979 }
1980
1981 if (changes & BSS_CHANGED_BEACON_INFO) {
1982 iwl_mvm_sf_update(mvm, vif, false);
1983 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1984 }
1985
1986 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
1987 /*
1988 * Send power command on every beacon change,
1989 * because we may have not enabled beacon abort yet.
1990 */
1991 BSS_CHANGED_BEACON_INFO)) {
1992 ret = iwl_mvm_power_update_mac(mvm);
1993 if (ret)
1994 IWL_ERR(mvm, "failed to update power mode\n");
1995 }
1996
1997 if (changes & BSS_CHANGED_TXPOWER) {
1998 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1999 bss_conf->txpower);
2000 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2001 }
2002
2003 if (changes & BSS_CHANGED_CQM) {
2004 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2005 /* reset cqm events tracking */
2006 mvmvif->bf_data.last_cqm_event = 0;
2007 if (mvmvif->bf_data.bf_enabled) {
2008 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2009 if (ret)
2010 IWL_ERR(mvm,
2011 "failed to update CQM thresholds\n");
2012 }
2013 }
2014
2015 if (changes & BSS_CHANGED_ARP_FILTER) {
2016 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2017 iwl_mvm_configure_bcast_filter(mvm);
2018 }
2019 }
2020
2021 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2022 struct ieee80211_vif *vif)
2023 {
2024 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2025 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2026 int ret;
2027
2028 /*
2029 * iwl_mvm_mac_ctxt_add() might read directly from the device
2030 * (the system time), so make sure it is available.
2031 */
2032 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2033 if (ret)
2034 return ret;
2035
2036 mutex_lock(&mvm->mutex);
2037
2038 /* Send the beacon template */
2039 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2040 if (ret)
2041 goto out_unlock;
2042
2043 /*
2044 * Re-calculate the tsf id, as the master-slave relations depend on the
2045 * beacon interval, which was not known when the AP interface was added.
2046 */
2047 if (vif->type == NL80211_IFTYPE_AP)
2048 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2049
2050 mvmvif->ap_assoc_sta_count = 0;
2051
2052 /* Add the mac context */
2053 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2054 if (ret)
2055 goto out_unlock;
2056
2057 /* Perform the binding */
2058 ret = iwl_mvm_binding_add_vif(mvm, vif);
2059 if (ret)
2060 goto out_remove;
2061
2062 /* Send the bcast station. At this stage the TBTT and DTIM time events
2063 * are added and applied to the scheduler */
2064 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2065 if (ret)
2066 goto out_unbind;
2067
2068 /* must be set before quota calculations */
2069 mvmvif->ap_ibss_active = true;
2070
2071 /* power updated needs to be done before quotas */
2072 iwl_mvm_power_update_mac(mvm);
2073
2074 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2075 if (ret)
2076 goto out_quota_failed;
2077
2078 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2079 if (vif->p2p && mvm->p2p_device_vif)
2080 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2081
2082 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2083
2084 iwl_mvm_bt_coex_vif_change(mvm);
2085
2086 /* we don't support TDLS during DCM */
2087 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2088 iwl_mvm_teardown_tdls_peers(mvm);
2089
2090 goto out_unlock;
2091
2092 out_quota_failed:
2093 iwl_mvm_power_update_mac(mvm);
2094 mvmvif->ap_ibss_active = false;
2095 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2096 out_unbind:
2097 iwl_mvm_binding_remove_vif(mvm, vif);
2098 out_remove:
2099 iwl_mvm_mac_ctxt_remove(mvm, vif);
2100 out_unlock:
2101 mutex_unlock(&mvm->mutex);
2102 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2103 return ret;
2104 }
2105
2106 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2107 struct ieee80211_vif *vif)
2108 {
2109 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2110 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2111
2112 iwl_mvm_prepare_mac_removal(mvm, vif);
2113
2114 mutex_lock(&mvm->mutex);
2115
2116 /* Handle AP stop while in CSA */
2117 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2118 iwl_mvm_remove_time_event(mvm, mvmvif,
2119 &mvmvif->time_event_data);
2120 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2121 mvmvif->csa_countdown = false;
2122 }
2123
2124 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2125 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2126 mvm->csa_tx_block_bcn_timeout = 0;
2127 }
2128
2129 mvmvif->ap_ibss_active = false;
2130 mvm->ap_last_beacon_gp2 = 0;
2131
2132 iwl_mvm_bt_coex_vif_change(mvm);
2133
2134 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2135
2136 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2137 if (vif->p2p && mvm->p2p_device_vif)
2138 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2139
2140 iwl_mvm_update_quotas(mvm, false, NULL);
2141 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2142 iwl_mvm_binding_remove_vif(mvm, vif);
2143
2144 iwl_mvm_power_update_mac(mvm);
2145
2146 iwl_mvm_mac_ctxt_remove(mvm, vif);
2147
2148 mutex_unlock(&mvm->mutex);
2149 }
2150
2151 static void
2152 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2153 struct ieee80211_vif *vif,
2154 struct ieee80211_bss_conf *bss_conf,
2155 u32 changes)
2156 {
2157 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2158
2159 /* Changes will be applied when the AP/IBSS is started */
2160 if (!mvmvif->ap_ibss_active)
2161 return;
2162
2163 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2164 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2165 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2166 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2167
2168 /* Need to send a new beacon template to the FW */
2169 if (changes & BSS_CHANGED_BEACON &&
2170 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2171 IWL_WARN(mvm, "Failed updating beacon data\n");
2172
2173 if (changes & BSS_CHANGED_TXPOWER) {
2174 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2175 bss_conf->txpower);
2176 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2177 }
2178 }
2179
2180 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2181 struct ieee80211_vif *vif,
2182 struct ieee80211_bss_conf *bss_conf,
2183 u32 changes)
2184 {
2185 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2186
2187 /*
2188 * iwl_mvm_bss_info_changed_station() might call
2189 * iwl_mvm_protect_session(), which reads directly from
2190 * the device (the system time), so make sure it is available.
2191 */
2192 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2193 return;
2194
2195 mutex_lock(&mvm->mutex);
2196
2197 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2198 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2199
2200 switch (vif->type) {
2201 case NL80211_IFTYPE_STATION:
2202 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2203 break;
2204 case NL80211_IFTYPE_AP:
2205 case NL80211_IFTYPE_ADHOC:
2206 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2207 break;
2208 default:
2209 /* shouldn't happen */
2210 WARN_ON_ONCE(1);
2211 }
2212
2213 mutex_unlock(&mvm->mutex);
2214 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2215 }
2216
2217 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2218 struct ieee80211_vif *vif,
2219 struct ieee80211_scan_request *hw_req)
2220 {
2221 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2222 int ret;
2223
2224 if (hw_req->req.n_channels == 0 ||
2225 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2226 return -EINVAL;
2227
2228 mutex_lock(&mvm->mutex);
2229 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2230 mutex_unlock(&mvm->mutex);
2231
2232 return ret;
2233 }
2234
2235 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2236 struct ieee80211_vif *vif)
2237 {
2238 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2239
2240 mutex_lock(&mvm->mutex);
2241
2242 /* Due to a race condition, it's possible that mac80211 asks
2243 * us to stop a hw_scan when it's already stopped. This can
2244 * happen, for instance, if we stopped the scan ourselves,
2245 * called ieee80211_scan_completed() and the userspace called
2246 * cancel scan scan before ieee80211_scan_work() could run.
2247 * To handle that, simply return if the scan is not running.
2248 */
2249 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2250 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2251
2252 mutex_unlock(&mvm->mutex);
2253 }
2254
2255 static void
2256 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2257 struct ieee80211_sta *sta, u16 tids,
2258 int num_frames,
2259 enum ieee80211_frame_release_type reason,
2260 bool more_data)
2261 {
2262 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2263
2264 /* Called when we need to transmit (a) frame(s) from mac80211 */
2265
2266 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2267 tids, more_data, false);
2268 }
2269
2270 static void
2271 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2272 struct ieee80211_sta *sta, u16 tids,
2273 int num_frames,
2274 enum ieee80211_frame_release_type reason,
2275 bool more_data)
2276 {
2277 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2278
2279 /* Called when we need to transmit (a) frame(s) from agg queue */
2280
2281 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2282 tids, more_data, true);
2283 }
2284
2285 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2286 struct ieee80211_vif *vif,
2287 enum sta_notify_cmd cmd,
2288 struct ieee80211_sta *sta)
2289 {
2290 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2291 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2292 unsigned long txqs = 0, tids = 0;
2293 int tid;
2294
2295 spin_lock_bh(&mvmsta->lock);
2296 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2297 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2298
2299 if (tid_data->state != IWL_AGG_ON &&
2300 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2301 continue;
2302
2303 __set_bit(tid_data->txq_id, &txqs);
2304
2305 if (iwl_mvm_tid_queued(tid_data) == 0)
2306 continue;
2307
2308 __set_bit(tid, &tids);
2309 }
2310
2311 switch (cmd) {
2312 case STA_NOTIFY_SLEEP:
2313 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2314 ieee80211_sta_block_awake(hw, sta, true);
2315
2316 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2317 ieee80211_sta_set_buffered(sta, tid, true);
2318
2319 if (txqs)
2320 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2321 /*
2322 * The fw updates the STA to be asleep. Tx packets on the Tx
2323 * queues to this station will not be transmitted. The fw will
2324 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2325 */
2326 break;
2327 case STA_NOTIFY_AWAKE:
2328 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2329 break;
2330
2331 if (txqs)
2332 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2333 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2334 break;
2335 default:
2336 break;
2337 }
2338 spin_unlock_bh(&mvmsta->lock);
2339 }
2340
2341 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2342 struct ieee80211_vif *vif,
2343 struct ieee80211_sta *sta)
2344 {
2345 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2346 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2347
2348 /*
2349 * This is called before mac80211 does RCU synchronisation,
2350 * so here we already invalidate our internal RCU-protected
2351 * station pointer. The rest of the code will thus no longer
2352 * be able to find the station this way, and we don't rely
2353 * on further RCU synchronisation after the sta_state()
2354 * callback deleted the station.
2355 */
2356 mutex_lock(&mvm->mutex);
2357 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2358 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2359 ERR_PTR(-ENOENT));
2360
2361 mutex_unlock(&mvm->mutex);
2362 }
2363
2364 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2365 const u8 *bssid)
2366 {
2367 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2368 return;
2369
2370 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2371 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2372 return;
2373 }
2374
2375 if (!vif->p2p &&
2376 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2377 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2378 return;
2379 }
2380
2381 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2382 }
2383
2384 static void
2385 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2386 struct ieee80211_vif *vif, u8 *peer_addr,
2387 enum nl80211_tdls_operation action)
2388 {
2389 struct iwl_fw_dbg_trigger_tlv *trig;
2390 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2391
2392 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2393 return;
2394
2395 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2396 tdls_trig = (void *)trig->data;
2397 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2398 return;
2399
2400 if (!(tdls_trig->action_bitmap & BIT(action)))
2401 return;
2402
2403 if (tdls_trig->peer_mode &&
2404 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2405 return;
2406
2407 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2408 "TDLS event occurred, peer %pM, action %d",
2409 peer_addr, action);
2410 }
2411
2412 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2413 struct iwl_mvm_sta *mvm_sta)
2414 {
2415 struct iwl_mvm_tid_data *tid_data;
2416 struct sk_buff *skb;
2417 int i;
2418
2419 spin_lock_bh(&mvm_sta->lock);
2420 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2421 tid_data = &mvm_sta->tid_data[i];
2422 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames)))
2423 ieee80211_free_txskb(mvm->hw, skb);
2424 }
2425 spin_unlock_bh(&mvm_sta->lock);
2426 }
2427
2428 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2429 struct ieee80211_vif *vif,
2430 struct ieee80211_sta *sta,
2431 enum ieee80211_sta_state old_state,
2432 enum ieee80211_sta_state new_state)
2433 {
2434 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2435 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2436 int ret;
2437
2438 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2439 sta->addr, old_state, new_state);
2440
2441 /* this would be a mac80211 bug ... but don't crash */
2442 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2443 return -EINVAL;
2444
2445 /* if a STA is being removed, reuse its ID */
2446 flush_work(&mvm->sta_drained_wk);
2447
2448 /*
2449 * If we are in a STA removal flow and in DQA mode:
2450 *
2451 * This is after the sync_rcu part, so the queues have already been
2452 * flushed. No more TXs on their way in mac80211's path, and no more in
2453 * the queues.
2454 * Also, we won't be getting any new TX frames for this station.
2455 * What we might have are deferred TX frames that need to be taken care
2456 * of.
2457 *
2458 * Drop any still-queued deferred-frame before removing the STA, and
2459 * make sure the worker is no longer handling frames for this STA.
2460 */
2461 if (old_state == IEEE80211_STA_NONE &&
2462 new_state == IEEE80211_STA_NOTEXIST &&
2463 iwl_mvm_is_dqa_supported(mvm)) {
2464 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2465
2466 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2467 flush_work(&mvm->add_stream_wk);
2468
2469 /*
2470 * No need to make sure deferred TX indication is off since the
2471 * worker will already remove it if it was on
2472 */
2473 }
2474
2475 mutex_lock(&mvm->mutex);
2476 if (old_state == IEEE80211_STA_NOTEXIST &&
2477 new_state == IEEE80211_STA_NONE) {
2478 /*
2479 * Firmware bug - it'll crash if the beacon interval is less
2480 * than 16. We can't avoid connecting at all, so refuse the
2481 * station state change, this will cause mac80211 to abandon
2482 * attempts to connect to this AP, and eventually wpa_s will
2483 * blacklist the AP...
2484 */
2485 if (vif->type == NL80211_IFTYPE_STATION &&
2486 vif->bss_conf.beacon_int < 16) {
2487 IWL_ERR(mvm,
2488 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2489 sta->addr, vif->bss_conf.beacon_int);
2490 ret = -EINVAL;
2491 goto out_unlock;
2492 }
2493
2494 if (sta->tdls &&
2495 (vif->p2p ||
2496 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2497 IWL_MVM_TDLS_STA_COUNT ||
2498 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2499 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2500 ret = -EBUSY;
2501 goto out_unlock;
2502 }
2503
2504 ret = iwl_mvm_add_sta(mvm, vif, sta);
2505 if (sta->tdls && ret == 0) {
2506 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2507 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2508 NL80211_TDLS_SETUP);
2509 }
2510 } else if (old_state == IEEE80211_STA_NONE &&
2511 new_state == IEEE80211_STA_AUTH) {
2512 /*
2513 * EBS may be disabled due to previous failures reported by FW.
2514 * Reset EBS status here assuming environment has been changed.
2515 */
2516 mvm->last_ebs_successful = true;
2517 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2518 ret = 0;
2519 } else if (old_state == IEEE80211_STA_AUTH &&
2520 new_state == IEEE80211_STA_ASSOC) {
2521 if (vif->type == NL80211_IFTYPE_AP) {
2522 mvmvif->ap_assoc_sta_count++;
2523 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2524 }
2525 ret = iwl_mvm_update_sta(mvm, vif, sta);
2526 if (ret == 0)
2527 iwl_mvm_rs_rate_init(mvm, sta,
2528 mvmvif->phy_ctxt->channel->band,
2529 true);
2530 } else if (old_state == IEEE80211_STA_ASSOC &&
2531 new_state == IEEE80211_STA_AUTHORIZED) {
2532
2533 /* we don't support TDLS during DCM */
2534 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2535 iwl_mvm_teardown_tdls_peers(mvm);
2536
2537 if (sta->tdls)
2538 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2539 NL80211_TDLS_ENABLE_LINK);
2540
2541 /* enable beacon filtering */
2542 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2543 ret = 0;
2544 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2545 new_state == IEEE80211_STA_ASSOC) {
2546 /* disable beacon filtering */
2547 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2548 ret = 0;
2549 } else if (old_state == IEEE80211_STA_ASSOC &&
2550 new_state == IEEE80211_STA_AUTH) {
2551 if (vif->type == NL80211_IFTYPE_AP) {
2552 mvmvif->ap_assoc_sta_count--;
2553 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2554 }
2555 ret = 0;
2556 } else if (old_state == IEEE80211_STA_AUTH &&
2557 new_state == IEEE80211_STA_NONE) {
2558 ret = 0;
2559 } else if (old_state == IEEE80211_STA_NONE &&
2560 new_state == IEEE80211_STA_NOTEXIST) {
2561 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2562 if (sta->tdls) {
2563 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2564 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2565 NL80211_TDLS_DISABLE_LINK);
2566 }
2567 } else {
2568 ret = -EIO;
2569 }
2570 out_unlock:
2571 mutex_unlock(&mvm->mutex);
2572
2573 if (sta->tdls && ret == 0) {
2574 if (old_state == IEEE80211_STA_NOTEXIST &&
2575 new_state == IEEE80211_STA_NONE)
2576 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2577 else if (old_state == IEEE80211_STA_NONE &&
2578 new_state == IEEE80211_STA_NOTEXIST)
2579 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2580 }
2581
2582 return ret;
2583 }
2584
2585 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2586 {
2587 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2588
2589 mvm->rts_threshold = value;
2590
2591 return 0;
2592 }
2593
2594 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2595 struct ieee80211_vif *vif,
2596 struct ieee80211_sta *sta, u32 changed)
2597 {
2598 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2599
2600 if (vif->type == NL80211_IFTYPE_STATION &&
2601 changed & IEEE80211_RC_NSS_CHANGED)
2602 iwl_mvm_sf_update(mvm, vif, false);
2603 }
2604
2605 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2606 struct ieee80211_vif *vif, u16 ac,
2607 const struct ieee80211_tx_queue_params *params)
2608 {
2609 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2610 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2611
2612 mvmvif->queue_params[ac] = *params;
2613
2614 /*
2615 * No need to update right away, we'll get BSS_CHANGED_QOS
2616 * The exception is P2P_DEVICE interface which needs immediate update.
2617 */
2618 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2619 int ret;
2620
2621 mutex_lock(&mvm->mutex);
2622 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2623 mutex_unlock(&mvm->mutex);
2624 return ret;
2625 }
2626 return 0;
2627 }
2628
2629 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2630 struct ieee80211_vif *vif)
2631 {
2632 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2633 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2634 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2635
2636 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2637 return;
2638
2639 /*
2640 * iwl_mvm_protect_session() reads directly from the device
2641 * (the system time), so make sure it is available.
2642 */
2643 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2644 return;
2645
2646 mutex_lock(&mvm->mutex);
2647 /* Try really hard to protect the session and hear a beacon */
2648 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2649 mutex_unlock(&mvm->mutex);
2650
2651 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2652 }
2653
2654 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2655 struct ieee80211_vif *vif,
2656 struct cfg80211_sched_scan_request *req,
2657 struct ieee80211_scan_ies *ies)
2658 {
2659 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2660
2661 int ret;
2662
2663 mutex_lock(&mvm->mutex);
2664
2665 if (!vif->bss_conf.idle) {
2666 ret = -EBUSY;
2667 goto out;
2668 }
2669
2670 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2671
2672 out:
2673 mutex_unlock(&mvm->mutex);
2674 return ret;
2675 }
2676
2677 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2678 struct ieee80211_vif *vif)
2679 {
2680 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2681 int ret;
2682
2683 mutex_lock(&mvm->mutex);
2684
2685 /* Due to a race condition, it's possible that mac80211 asks
2686 * us to stop a sched_scan when it's already stopped. This
2687 * can happen, for instance, if we stopped the scan ourselves,
2688 * called ieee80211_sched_scan_stopped() and the userspace called
2689 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2690 * could run. To handle this, simply return if the scan is
2691 * not running.
2692 */
2693 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2694 mutex_unlock(&mvm->mutex);
2695 return 0;
2696 }
2697
2698 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2699 mutex_unlock(&mvm->mutex);
2700 iwl_mvm_wait_for_async_handlers(mvm);
2701
2702 return ret;
2703 }
2704
2705 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2706 enum set_key_cmd cmd,
2707 struct ieee80211_vif *vif,
2708 struct ieee80211_sta *sta,
2709 struct ieee80211_key_conf *key)
2710 {
2711 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2712 struct iwl_mvm_sta *mvmsta;
2713 struct iwl_mvm_key_pn *ptk_pn;
2714 int keyidx = key->keyidx;
2715 int ret;
2716 u8 key_offset;
2717
2718 if (iwlwifi_mod_params.sw_crypto) {
2719 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2720 return -EOPNOTSUPP;
2721 }
2722
2723 switch (key->cipher) {
2724 case WLAN_CIPHER_SUITE_TKIP:
2725 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2726 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2727 break;
2728 case WLAN_CIPHER_SUITE_CCMP:
2729 case WLAN_CIPHER_SUITE_GCMP:
2730 case WLAN_CIPHER_SUITE_GCMP_256:
2731 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2732 break;
2733 case WLAN_CIPHER_SUITE_AES_CMAC:
2734 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2735 break;
2736 case WLAN_CIPHER_SUITE_WEP40:
2737 case WLAN_CIPHER_SUITE_WEP104:
2738 /* For non-client mode, only use WEP keys for TX as we probably
2739 * don't have a station yet anyway and would then have to keep
2740 * track of the keys, linking them to each of the clients/peers
2741 * as they appear. For now, don't do that, for performance WEP
2742 * offload doesn't really matter much, but we need it for some
2743 * other offload features in client mode.
2744 */
2745 if (vif->type != NL80211_IFTYPE_STATION)
2746 return 0;
2747 break;
2748 default:
2749 /* currently FW supports only one optional cipher scheme */
2750 if (hw->n_cipher_schemes &&
2751 hw->cipher_schemes->cipher == key->cipher)
2752 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2753 else
2754 return -EOPNOTSUPP;
2755 }
2756
2757 mutex_lock(&mvm->mutex);
2758
2759 switch (cmd) {
2760 case SET_KEY:
2761 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2762 vif->type == NL80211_IFTYPE_AP) && !sta) {
2763 /*
2764 * GTK on AP interface is a TX-only key, return 0;
2765 * on IBSS they're per-station and because we're lazy
2766 * we don't support them for RX, so do the same.
2767 * CMAC in AP/IBSS modes must be done in software.
2768 */
2769 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
2770 ret = -EOPNOTSUPP;
2771 else
2772 ret = 0;
2773 key->hw_key_idx = STA_KEY_IDX_INVALID;
2774 break;
2775 }
2776
2777 /* During FW restart, in order to restore the state as it was,
2778 * don't try to reprogram keys we previously failed for.
2779 */
2780 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2781 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2782 IWL_DEBUG_MAC80211(mvm,
2783 "skip invalid idx key programming during restart\n");
2784 ret = 0;
2785 break;
2786 }
2787
2788 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2789 sta && iwl_mvm_has_new_rx_api(mvm) &&
2790 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2791 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2792 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2793 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2794 struct ieee80211_key_seq seq;
2795 int tid, q;
2796
2797 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2798 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2799 ptk_pn = kzalloc(sizeof(*ptk_pn) +
2800 mvm->trans->num_rx_queues *
2801 sizeof(ptk_pn->q[0]),
2802 GFP_KERNEL);
2803 if (!ptk_pn) {
2804 ret = -ENOMEM;
2805 break;
2806 }
2807
2808 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2809 ieee80211_get_key_rx_seq(key, tid, &seq);
2810 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2811 memcpy(ptk_pn->q[q].pn[tid],
2812 seq.ccmp.pn,
2813 IEEE80211_CCMP_PN_LEN);
2814 }
2815
2816 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2817 }
2818
2819 /* in HW restart reuse the index, otherwise request a new one */
2820 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2821 key_offset = key->hw_key_idx;
2822 else
2823 key_offset = STA_KEY_IDX_INVALID;
2824
2825 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2826 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2827 if (ret) {
2828 IWL_WARN(mvm, "set key failed\n");
2829 /*
2830 * can't add key for RX, but we don't need it
2831 * in the device for TX so still return 0
2832 */
2833 key->hw_key_idx = STA_KEY_IDX_INVALID;
2834 ret = 0;
2835 }
2836
2837 break;
2838 case DISABLE_KEY:
2839 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2840 ret = 0;
2841 break;
2842 }
2843
2844 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2845 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2846 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2847 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2848 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2849 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2850 ptk_pn = rcu_dereference_protected(
2851 mvmsta->ptk_pn[keyidx],
2852 lockdep_is_held(&mvm->mutex));
2853 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2854 if (ptk_pn)
2855 kfree_rcu(ptk_pn, rcu_head);
2856 }
2857
2858 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2859 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2860 break;
2861 default:
2862 ret = -EINVAL;
2863 }
2864
2865 mutex_unlock(&mvm->mutex);
2866 return ret;
2867 }
2868
2869 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2870 struct ieee80211_vif *vif,
2871 struct ieee80211_key_conf *keyconf,
2872 struct ieee80211_sta *sta,
2873 u32 iv32, u16 *phase1key)
2874 {
2875 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2876
2877 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2878 return;
2879
2880 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2881 }
2882
2883
2884 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2885 struct iwl_rx_packet *pkt, void *data)
2886 {
2887 struct iwl_mvm *mvm =
2888 container_of(notif_wait, struct iwl_mvm, notif_wait);
2889 struct iwl_hs20_roc_res *resp;
2890 int resp_len = iwl_rx_packet_payload_len(pkt);
2891 struct iwl_mvm_time_event_data *te_data = data;
2892
2893 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2894 return true;
2895
2896 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2897 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2898 return true;
2899 }
2900
2901 resp = (void *)pkt->data;
2902
2903 IWL_DEBUG_TE(mvm,
2904 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2905 resp->status, resp->event_unique_id);
2906
2907 te_data->uid = le32_to_cpu(resp->event_unique_id);
2908 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2909 te_data->uid);
2910
2911 spin_lock_bh(&mvm->time_event_lock);
2912 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2913 spin_unlock_bh(&mvm->time_event_lock);
2914
2915 return true;
2916 }
2917
2918 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2919 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2920 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2921 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2922 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2923 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2924 struct ieee80211_channel *channel,
2925 struct ieee80211_vif *vif,
2926 int duration)
2927 {
2928 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2929 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2930 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2931 static const u16 time_event_response[] = { HOT_SPOT_CMD };
2932 struct iwl_notification_wait wait_time_event;
2933 u32 dtim_interval = vif->bss_conf.dtim_period *
2934 vif->bss_conf.beacon_int;
2935 u32 req_dur, delay;
2936 struct iwl_hs20_roc_req aux_roc_req = {
2937 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2938 .id_and_color =
2939 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2940 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2941 /* Set the channel info data */
2942 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
2943 PHY_BAND_24 : PHY_BAND_5,
2944 .channel_info.channel = channel->hw_value,
2945 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2946 /* Set the time and duration */
2947 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2948 };
2949
2950 delay = AUX_ROC_MIN_DELAY;
2951 req_dur = MSEC_TO_TU(duration);
2952
2953 /*
2954 * If we are associated we want the delay time to be at least one
2955 * dtim interval so that the FW can wait until after the DTIM and
2956 * then start the time event, this will potentially allow us to
2957 * remain off-channel for the max duration.
2958 * Since we want to use almost a whole dtim interval we would also
2959 * like the delay to be for 2-3 dtim intervals, in case there are
2960 * other time events with higher priority.
2961 */
2962 if (vif->bss_conf.assoc) {
2963 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2964 /* We cannot remain off-channel longer than the DTIM interval */
2965 if (dtim_interval <= req_dur) {
2966 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2967 if (req_dur <= AUX_ROC_MIN_DURATION)
2968 req_dur = dtim_interval -
2969 AUX_ROC_MIN_SAFETY_BUFFER;
2970 }
2971 }
2972
2973 aux_roc_req.duration = cpu_to_le32(req_dur);
2974 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2975
2976 IWL_DEBUG_TE(mvm,
2977 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2978 channel->hw_value, req_dur, duration, delay,
2979 dtim_interval);
2980 /* Set the node address */
2981 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2982
2983 lockdep_assert_held(&mvm->mutex);
2984
2985 spin_lock_bh(&mvm->time_event_lock);
2986
2987 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2988 spin_unlock_bh(&mvm->time_event_lock);
2989 return -EIO;
2990 }
2991
2992 te_data->vif = vif;
2993 te_data->duration = duration;
2994 te_data->id = HOT_SPOT_CMD;
2995
2996 spin_unlock_bh(&mvm->time_event_lock);
2997
2998 /*
2999 * Use a notification wait, which really just processes the
3000 * command response and doesn't wait for anything, in order
3001 * to be able to process the response and get the UID inside
3002 * the RX path. Using CMD_WANT_SKB doesn't work because it
3003 * stores the buffer and then wakes up this thread, by which
3004 * time another notification (that the time event started)
3005 * might already be processed unsuccessfully.
3006 */
3007 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3008 time_event_response,
3009 ARRAY_SIZE(time_event_response),
3010 iwl_mvm_rx_aux_roc, te_data);
3011
3012 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3013 &aux_roc_req);
3014
3015 if (res) {
3016 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3017 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3018 goto out_clear_te;
3019 }
3020
3021 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3022 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3023 /* should never fail */
3024 WARN_ON_ONCE(res);
3025
3026 if (res) {
3027 out_clear_te:
3028 spin_lock_bh(&mvm->time_event_lock);
3029 iwl_mvm_te_clear_data(mvm, te_data);
3030 spin_unlock_bh(&mvm->time_event_lock);
3031 }
3032
3033 return res;
3034 }
3035
3036 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3037 struct ieee80211_vif *vif,
3038 struct ieee80211_channel *channel,
3039 int duration,
3040 enum ieee80211_roc_type type)
3041 {
3042 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3043 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3044 struct cfg80211_chan_def chandef;
3045 struct iwl_mvm_phy_ctxt *phy_ctxt;
3046 int ret, i;
3047
3048 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3049 duration, type);
3050
3051 flush_work(&mvm->roc_done_wk);
3052
3053 mutex_lock(&mvm->mutex);
3054
3055 switch (vif->type) {
3056 case NL80211_IFTYPE_STATION:
3057 if (fw_has_capa(&mvm->fw->ucode_capa,
3058 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3059 /* Use aux roc framework (HS20) */
3060 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3061 vif, duration);
3062 goto out_unlock;
3063 }
3064 IWL_ERR(mvm, "hotspot not supported\n");
3065 ret = -EINVAL;
3066 goto out_unlock;
3067 case NL80211_IFTYPE_P2P_DEVICE:
3068 /* handle below */
3069 break;
3070 default:
3071 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3072 ret = -EINVAL;
3073 goto out_unlock;
3074 }
3075
3076 for (i = 0; i < NUM_PHY_CTX; i++) {
3077 phy_ctxt = &mvm->phy_ctxts[i];
3078 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3079 continue;
3080
3081 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3082 /*
3083 * Unbind the P2P_DEVICE from the current PHY context,
3084 * and if the PHY context is not used remove it.
3085 */
3086 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3087 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3088 goto out_unlock;
3089
3090 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3091
3092 /* Bind the P2P_DEVICE to the current PHY Context */
3093 mvmvif->phy_ctxt = phy_ctxt;
3094
3095 ret = iwl_mvm_binding_add_vif(mvm, vif);
3096 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3097 goto out_unlock;
3098
3099 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3100 goto schedule_time_event;
3101 }
3102 }
3103
3104 /* Need to update the PHY context only if the ROC channel changed */
3105 if (channel == mvmvif->phy_ctxt->channel)
3106 goto schedule_time_event;
3107
3108 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3109
3110 /*
3111 * Change the PHY context configuration as it is currently referenced
3112 * only by the P2P Device MAC
3113 */
3114 if (mvmvif->phy_ctxt->ref == 1) {
3115 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3116 &chandef, 1, 1);
3117 if (ret)
3118 goto out_unlock;
3119 } else {
3120 /*
3121 * The PHY context is shared with other MACs. Need to remove the
3122 * P2P Device from the binding, allocate an new PHY context and
3123 * create a new binding
3124 */
3125 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3126 if (!phy_ctxt) {
3127 ret = -ENOSPC;
3128 goto out_unlock;
3129 }
3130
3131 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3132 1, 1);
3133 if (ret) {
3134 IWL_ERR(mvm, "Failed to change PHY context\n");
3135 goto out_unlock;
3136 }
3137
3138 /* Unbind the P2P_DEVICE from the current PHY context */
3139 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3140 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3141 goto out_unlock;
3142
3143 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3144
3145 /* Bind the P2P_DEVICE to the new allocated PHY context */
3146 mvmvif->phy_ctxt = phy_ctxt;
3147
3148 ret = iwl_mvm_binding_add_vif(mvm, vif);
3149 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3150 goto out_unlock;
3151
3152 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3153 }
3154
3155 schedule_time_event:
3156 /* Schedule the time events */
3157 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3158
3159 out_unlock:
3160 mutex_unlock(&mvm->mutex);
3161 IWL_DEBUG_MAC80211(mvm, "leave\n");
3162 return ret;
3163 }
3164
3165 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3166 {
3167 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3168
3169 IWL_DEBUG_MAC80211(mvm, "enter\n");
3170
3171 mutex_lock(&mvm->mutex);
3172 iwl_mvm_stop_roc(mvm);
3173 mutex_unlock(&mvm->mutex);
3174
3175 IWL_DEBUG_MAC80211(mvm, "leave\n");
3176 return 0;
3177 }
3178
3179 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3180 struct ieee80211_chanctx_conf *ctx)
3181 {
3182 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3183 struct iwl_mvm_phy_ctxt *phy_ctxt;
3184 int ret;
3185
3186 lockdep_assert_held(&mvm->mutex);
3187
3188 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3189
3190 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3191 if (!phy_ctxt) {
3192 ret = -ENOSPC;
3193 goto out;
3194 }
3195
3196 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3197 ctx->rx_chains_static,
3198 ctx->rx_chains_dynamic);
3199 if (ret) {
3200 IWL_ERR(mvm, "Failed to add PHY context\n");
3201 goto out;
3202 }
3203
3204 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3205 *phy_ctxt_id = phy_ctxt->id;
3206 out:
3207 return ret;
3208 }
3209
3210 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3211 struct ieee80211_chanctx_conf *ctx)
3212 {
3213 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3214 int ret;
3215
3216 mutex_lock(&mvm->mutex);
3217 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3218 mutex_unlock(&mvm->mutex);
3219
3220 return ret;
3221 }
3222
3223 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3224 struct ieee80211_chanctx_conf *ctx)
3225 {
3226 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3227 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3228
3229 lockdep_assert_held(&mvm->mutex);
3230
3231 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3232 }
3233
3234 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3235 struct ieee80211_chanctx_conf *ctx)
3236 {
3237 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3238
3239 mutex_lock(&mvm->mutex);
3240 __iwl_mvm_remove_chanctx(mvm, ctx);
3241 mutex_unlock(&mvm->mutex);
3242 }
3243
3244 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3245 struct ieee80211_chanctx_conf *ctx,
3246 u32 changed)
3247 {
3248 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3249 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3250 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3251
3252 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3253 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3254 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3255 IEEE80211_CHANCTX_CHANGE_RADAR |
3256 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3257 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3258 phy_ctxt->ref, changed))
3259 return;
3260
3261 mutex_lock(&mvm->mutex);
3262 iwl_mvm_bt_coex_vif_change(mvm);
3263 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3264 ctx->rx_chains_static,
3265 ctx->rx_chains_dynamic);
3266 mutex_unlock(&mvm->mutex);
3267 }
3268
3269 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3270 struct ieee80211_vif *vif,
3271 struct ieee80211_chanctx_conf *ctx,
3272 bool switching_chanctx)
3273 {
3274 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3275 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3276 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3277 int ret;
3278
3279 lockdep_assert_held(&mvm->mutex);
3280
3281 mvmvif->phy_ctxt = phy_ctxt;
3282
3283 switch (vif->type) {
3284 case NL80211_IFTYPE_AP:
3285 /* only needed if we're switching chanctx (i.e. during CSA) */
3286 if (switching_chanctx) {
3287 mvmvif->ap_ibss_active = true;
3288 break;
3289 }
3290 case NL80211_IFTYPE_ADHOC:
3291 /*
3292 * The AP binding flow is handled as part of the start_ap flow
3293 * (in bss_info_changed), similarly for IBSS.
3294 */
3295 ret = 0;
3296 goto out;
3297 case NL80211_IFTYPE_STATION:
3298 break;
3299 case NL80211_IFTYPE_MONITOR:
3300 /* always disable PS when a monitor interface is active */
3301 mvmvif->ps_disabled = true;
3302 break;
3303 default:
3304 ret = -EINVAL;
3305 goto out;
3306 }
3307
3308 ret = iwl_mvm_binding_add_vif(mvm, vif);
3309 if (ret)
3310 goto out;
3311
3312 /*
3313 * Power state must be updated before quotas,
3314 * otherwise fw will complain.
3315 */
3316 iwl_mvm_power_update_mac(mvm);
3317
3318 /* Setting the quota at this stage is only required for monitor
3319 * interfaces. For the other types, the bss_info changed flow
3320 * will handle quota settings.
3321 */
3322 if (vif->type == NL80211_IFTYPE_MONITOR) {
3323 mvmvif->monitor_active = true;
3324 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3325 if (ret)
3326 goto out_remove_binding;
3327
3328 ret = iwl_mvm_add_snif_sta(mvm, vif);
3329 if (ret)
3330 goto out_remove_binding;
3331
3332 }
3333
3334 /* Handle binding during CSA */
3335 if (vif->type == NL80211_IFTYPE_AP) {
3336 iwl_mvm_update_quotas(mvm, false, NULL);
3337 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3338 }
3339
3340 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3341 u32 duration = 2 * vif->bss_conf.beacon_int;
3342
3343 /* iwl_mvm_protect_session() reads directly from the
3344 * device (the system time), so make sure it is
3345 * available.
3346 */
3347 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3348 if (ret)
3349 goto out_remove_binding;
3350
3351 /* Protect the session to make sure we hear the first
3352 * beacon on the new channel.
3353 */
3354 iwl_mvm_protect_session(mvm, vif, duration, duration,
3355 vif->bss_conf.beacon_int / 2,
3356 true);
3357
3358 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3359
3360 iwl_mvm_update_quotas(mvm, false, NULL);
3361 }
3362
3363 goto out;
3364
3365 out_remove_binding:
3366 iwl_mvm_binding_remove_vif(mvm, vif);
3367 iwl_mvm_power_update_mac(mvm);
3368 out:
3369 if (ret)
3370 mvmvif->phy_ctxt = NULL;
3371 return ret;
3372 }
3373 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3374 struct ieee80211_vif *vif,
3375 struct ieee80211_chanctx_conf *ctx)
3376 {
3377 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3378 int ret;
3379
3380 mutex_lock(&mvm->mutex);
3381 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3382 mutex_unlock(&mvm->mutex);
3383
3384 return ret;
3385 }
3386
3387 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3388 struct ieee80211_vif *vif,
3389 struct ieee80211_chanctx_conf *ctx,
3390 bool switching_chanctx)
3391 {
3392 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3393 struct ieee80211_vif *disabled_vif = NULL;
3394
3395 lockdep_assert_held(&mvm->mutex);
3396
3397 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3398
3399 switch (vif->type) {
3400 case NL80211_IFTYPE_ADHOC:
3401 goto out;
3402 case NL80211_IFTYPE_MONITOR:
3403 mvmvif->monitor_active = false;
3404 mvmvif->ps_disabled = false;
3405 iwl_mvm_rm_snif_sta(mvm, vif);
3406 break;
3407 case NL80211_IFTYPE_AP:
3408 /* This part is triggered only during CSA */
3409 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3410 goto out;
3411
3412 mvmvif->csa_countdown = false;
3413
3414 /* Set CS bit on all the stations */
3415 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3416
3417 /* Save blocked iface, the timeout is set on the next beacon */
3418 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3419
3420 mvmvif->ap_ibss_active = false;
3421 break;
3422 case NL80211_IFTYPE_STATION:
3423 if (!switching_chanctx)
3424 break;
3425
3426 disabled_vif = vif;
3427
3428 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3429 break;
3430 default:
3431 break;
3432 }
3433
3434 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3435 iwl_mvm_binding_remove_vif(mvm, vif);
3436
3437 out:
3438 mvmvif->phy_ctxt = NULL;
3439 iwl_mvm_power_update_mac(mvm);
3440 }
3441
3442 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3443 struct ieee80211_vif *vif,
3444 struct ieee80211_chanctx_conf *ctx)
3445 {
3446 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3447
3448 mutex_lock(&mvm->mutex);
3449 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3450 mutex_unlock(&mvm->mutex);
3451 }
3452
3453 static int
3454 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3455 struct ieee80211_vif_chanctx_switch *vifs)
3456 {
3457 int ret;
3458
3459 mutex_lock(&mvm->mutex);
3460 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3461 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3462
3463 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3464 if (ret) {
3465 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3466 goto out_reassign;
3467 }
3468
3469 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3470 true);
3471 if (ret) {
3472 IWL_ERR(mvm,
3473 "failed to assign new_ctx during channel switch\n");
3474 goto out_remove;
3475 }
3476
3477 /* we don't support TDLS during DCM - can be caused by channel switch */
3478 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3479 iwl_mvm_teardown_tdls_peers(mvm);
3480
3481 goto out;
3482
3483 out_remove:
3484 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3485
3486 out_reassign:
3487 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3488 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3489 goto out_restart;
3490 }
3491
3492 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3493 true)) {
3494 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3495 goto out_restart;
3496 }
3497
3498 goto out;
3499
3500 out_restart:
3501 /* things keep failing, better restart the hw */
3502 iwl_mvm_nic_restart(mvm, false);
3503
3504 out:
3505 mutex_unlock(&mvm->mutex);
3506
3507 return ret;
3508 }
3509
3510 static int
3511 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3512 struct ieee80211_vif_chanctx_switch *vifs)
3513 {
3514 int ret;
3515
3516 mutex_lock(&mvm->mutex);
3517 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3518
3519 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3520 true);
3521 if (ret) {
3522 IWL_ERR(mvm,
3523 "failed to assign new_ctx during channel switch\n");
3524 goto out_reassign;
3525 }
3526
3527 goto out;
3528
3529 out_reassign:
3530 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3531 true)) {
3532 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3533 goto out_restart;
3534 }
3535
3536 goto out;
3537
3538 out_restart:
3539 /* things keep failing, better restart the hw */
3540 iwl_mvm_nic_restart(mvm, false);
3541
3542 out:
3543 mutex_unlock(&mvm->mutex);
3544
3545 return ret;
3546 }
3547
3548 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3549 struct ieee80211_vif_chanctx_switch *vifs,
3550 int n_vifs,
3551 enum ieee80211_chanctx_switch_mode mode)
3552 {
3553 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3554 int ret;
3555
3556 /* we only support a single-vif right now */
3557 if (n_vifs > 1)
3558 return -EOPNOTSUPP;
3559
3560 switch (mode) {
3561 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3562 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3563 break;
3564 case CHANCTX_SWMODE_REASSIGN_VIF:
3565 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3566 break;
3567 default:
3568 ret = -EOPNOTSUPP;
3569 break;
3570 }
3571
3572 return ret;
3573 }
3574
3575 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3576 struct ieee80211_sta *sta,
3577 bool set)
3578 {
3579 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3580 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3581
3582 if (!mvm_sta || !mvm_sta->vif) {
3583 IWL_ERR(mvm, "Station is not associated to a vif\n");
3584 return -EINVAL;
3585 }
3586
3587 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3588 }
3589
3590 #ifdef CONFIG_NL80211_TESTMODE
3591 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3592 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3593 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3594 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3595 };
3596
3597 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3598 struct ieee80211_vif *vif,
3599 void *data, int len)
3600 {
3601 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3602 int err;
3603 u32 noa_duration;
3604
3605 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3606 if (err)
3607 return err;
3608
3609 if (!tb[IWL_MVM_TM_ATTR_CMD])
3610 return -EINVAL;
3611
3612 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3613 case IWL_MVM_TM_CMD_SET_NOA:
3614 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3615 !vif->bss_conf.enable_beacon ||
3616 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3617 return -EINVAL;
3618
3619 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3620 if (noa_duration >= vif->bss_conf.beacon_int)
3621 return -EINVAL;
3622
3623 mvm->noa_duration = noa_duration;
3624 mvm->noa_vif = vif;
3625
3626 return iwl_mvm_update_quotas(mvm, false, NULL);
3627 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3628 /* must be associated client vif - ignore authorized */
3629 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3630 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3631 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3632 return -EINVAL;
3633
3634 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3635 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3636 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3637 }
3638
3639 return -EOPNOTSUPP;
3640 }
3641
3642 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3643 struct ieee80211_vif *vif,
3644 void *data, int len)
3645 {
3646 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3647 int err;
3648
3649 mutex_lock(&mvm->mutex);
3650 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3651 mutex_unlock(&mvm->mutex);
3652
3653 return err;
3654 }
3655 #endif
3656
3657 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3658 struct ieee80211_vif *vif,
3659 struct ieee80211_channel_switch *chsw)
3660 {
3661 /* By implementing this operation, we prevent mac80211 from
3662 * starting its own channel switch timer, so that we can call
3663 * ieee80211_chswitch_done() ourselves at the right time
3664 * (which is when the absence time event starts).
3665 */
3666
3667 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3668 "dummy channel switch op\n");
3669 }
3670
3671 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3672 struct ieee80211_vif *vif,
3673 struct ieee80211_channel_switch *chsw)
3674 {
3675 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3676 struct ieee80211_vif *csa_vif;
3677 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3678 u32 apply_time;
3679 int ret;
3680
3681 mutex_lock(&mvm->mutex);
3682
3683 mvmvif->csa_failed = false;
3684
3685 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3686 chsw->chandef.center_freq1);
3687
3688 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3689
3690 switch (vif->type) {
3691 case NL80211_IFTYPE_AP:
3692 csa_vif =
3693 rcu_dereference_protected(mvm->csa_vif,
3694 lockdep_is_held(&mvm->mutex));
3695 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3696 "Another CSA is already in progress")) {
3697 ret = -EBUSY;
3698 goto out_unlock;
3699 }
3700
3701 /* we still didn't unblock tx. prevent new CS meanwhile */
3702 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
3703 lockdep_is_held(&mvm->mutex))) {
3704 ret = -EBUSY;
3705 goto out_unlock;
3706 }
3707
3708 rcu_assign_pointer(mvm->csa_vif, vif);
3709
3710 if (WARN_ONCE(mvmvif->csa_countdown,
3711 "Previous CSA countdown didn't complete")) {
3712 ret = -EBUSY;
3713 goto out_unlock;
3714 }
3715
3716 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
3717
3718 break;
3719 case NL80211_IFTYPE_STATION:
3720 if (mvmvif->lqm_active)
3721 iwl_mvm_send_lqm_cmd(vif,
3722 LQM_CMD_OPERATION_STOP_MEASUREMENT,
3723 0, 0);
3724
3725 /* Schedule the time event to a bit before beacon 1,
3726 * to make sure we're in the new channel when the
3727 * GO/AP arrives.
3728 */
3729 apply_time = chsw->device_timestamp +
3730 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3731 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3732
3733 if (chsw->block_tx)
3734 iwl_mvm_csa_client_absent(mvm, vif);
3735
3736 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3737 apply_time);
3738 if (mvmvif->bf_data.bf_enabled) {
3739 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3740 if (ret)
3741 goto out_unlock;
3742 }
3743
3744 break;
3745 default:
3746 break;
3747 }
3748
3749 mvmvif->ps_disabled = true;
3750
3751 ret = iwl_mvm_power_update_ps(mvm);
3752 if (ret)
3753 goto out_unlock;
3754
3755 /* we won't be on this channel any longer */
3756 iwl_mvm_teardown_tdls_peers(mvm);
3757
3758 out_unlock:
3759 mutex_unlock(&mvm->mutex);
3760
3761 return ret;
3762 }
3763
3764 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3765 struct ieee80211_vif *vif)
3766 {
3767 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3768 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3769 int ret;
3770
3771 mutex_lock(&mvm->mutex);
3772
3773 if (mvmvif->csa_failed) {
3774 mvmvif->csa_failed = false;
3775 ret = -EIO;
3776 goto out_unlock;
3777 }
3778
3779 if (vif->type == NL80211_IFTYPE_STATION) {
3780 struct iwl_mvm_sta *mvmsta;
3781
3782 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3783 mvmvif->ap_sta_id);
3784
3785 if (WARN_ON(!mvmsta)) {
3786 ret = -EIO;
3787 goto out_unlock;
3788 }
3789
3790 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3791
3792 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3793
3794 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3795 if (ret)
3796 goto out_unlock;
3797
3798 iwl_mvm_stop_session_protection(mvm, vif);
3799 }
3800
3801 mvmvif->ps_disabled = false;
3802
3803 ret = iwl_mvm_power_update_ps(mvm);
3804
3805 out_unlock:
3806 mutex_unlock(&mvm->mutex);
3807
3808 return ret;
3809 }
3810
3811 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3812 struct ieee80211_vif *vif, u32 queues, bool drop)
3813 {
3814 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3815 struct iwl_mvm_vif *mvmvif;
3816 struct iwl_mvm_sta *mvmsta;
3817 struct ieee80211_sta *sta;
3818 int i;
3819 u32 msk = 0;
3820
3821 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3822 return;
3823
3824 /* Make sure we're done with the deferred traffic before flushing */
3825 if (iwl_mvm_is_dqa_supported(mvm))
3826 flush_work(&mvm->add_stream_wk);
3827
3828 mutex_lock(&mvm->mutex);
3829 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3830
3831 /* flush the AP-station and all TDLS peers */
3832 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3833 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3834 lockdep_is_held(&mvm->mutex));
3835 if (IS_ERR_OR_NULL(sta))
3836 continue;
3837
3838 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3839 if (mvmsta->vif != vif)
3840 continue;
3841
3842 /* make sure only TDLS peers or the AP are flushed */
3843 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3844
3845 msk |= mvmsta->tfd_queue_msk;
3846 }
3847
3848 if (drop) {
3849 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3850 IWL_ERR(mvm, "flush request fail\n");
3851 mutex_unlock(&mvm->mutex);
3852 } else {
3853 mutex_unlock(&mvm->mutex);
3854
3855 /* this can take a while, and we may need/want other operations
3856 * to succeed while doing this, so do it without the mutex held
3857 */
3858 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3859 }
3860 }
3861
3862 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3863 struct survey_info *survey)
3864 {
3865 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3866 int ret;
3867
3868 memset(survey, 0, sizeof(*survey));
3869
3870 /* only support global statistics right now */
3871 if (idx != 0)
3872 return -ENOENT;
3873
3874 if (fw_has_capa(&mvm->fw->ucode_capa,
3875 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3876 return -ENOENT;
3877
3878 mutex_lock(&mvm->mutex);
3879
3880 if (mvm->ucode_loaded) {
3881 ret = iwl_mvm_request_statistics(mvm, false);
3882 if (ret)
3883 goto out;
3884 }
3885
3886 survey->filled = SURVEY_INFO_TIME |
3887 SURVEY_INFO_TIME_RX |
3888 SURVEY_INFO_TIME_TX |
3889 SURVEY_INFO_TIME_SCAN;
3890 survey->time = mvm->accu_radio_stats.on_time_rf +
3891 mvm->radio_stats.on_time_rf;
3892 do_div(survey->time, USEC_PER_MSEC);
3893
3894 survey->time_rx = mvm->accu_radio_stats.rx_time +
3895 mvm->radio_stats.rx_time;
3896 do_div(survey->time_rx, USEC_PER_MSEC);
3897
3898 survey->time_tx = mvm->accu_radio_stats.tx_time +
3899 mvm->radio_stats.tx_time;
3900 do_div(survey->time_tx, USEC_PER_MSEC);
3901
3902 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3903 mvm->radio_stats.on_time_scan;
3904 do_div(survey->time_scan, USEC_PER_MSEC);
3905
3906 ret = 0;
3907 out:
3908 mutex_unlock(&mvm->mutex);
3909 return ret;
3910 }
3911
3912 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3913 struct ieee80211_vif *vif,
3914 struct ieee80211_sta *sta,
3915 struct station_info *sinfo)
3916 {
3917 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3918 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3919 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3920
3921 if (mvmsta->avg_energy) {
3922 sinfo->signal_avg = mvmsta->avg_energy;
3923 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
3924 }
3925
3926 if (fw_has_capa(&mvm->fw->ucode_capa,
3927 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3928 return;
3929
3930 /* if beacon filtering isn't on mac80211 does it anyway */
3931 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3932 return;
3933
3934 if (!vif->bss_conf.assoc)
3935 return;
3936
3937 mutex_lock(&mvm->mutex);
3938
3939 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3940 goto unlock;
3941
3942 if (iwl_mvm_request_statistics(mvm, false))
3943 goto unlock;
3944
3945 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3946 mvmvif->beacon_stats.accu_num_beacons;
3947 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3948 if (mvmvif->beacon_stats.avg_signal) {
3949 /* firmware only reports a value after RXing a few beacons */
3950 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3951 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3952 }
3953 unlock:
3954 mutex_unlock(&mvm->mutex);
3955 }
3956
3957 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3958 struct ieee80211_vif *vif,
3959 const struct ieee80211_event *event)
3960 {
3961 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
3962 do { \
3963 if ((_cnt) && --(_cnt)) \
3964 break; \
3965 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3966 } while (0)
3967
3968 struct iwl_fw_dbg_trigger_tlv *trig;
3969 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3970
3971 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3972 return;
3973
3974 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3975 trig_mlme = (void *)trig->data;
3976 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3977 return;
3978
3979 if (event->u.mlme.data == ASSOC_EVENT) {
3980 if (event->u.mlme.status == MLME_DENIED)
3981 CHECK_MLME_TRIGGER(mvm, trig, buf,
3982 trig_mlme->stop_assoc_denied,
3983 "DENIED ASSOC: reason %d",
3984 event->u.mlme.reason);
3985 else if (event->u.mlme.status == MLME_TIMEOUT)
3986 CHECK_MLME_TRIGGER(mvm, trig, buf,
3987 trig_mlme->stop_assoc_timeout,
3988 "ASSOC TIMEOUT");
3989 } else if (event->u.mlme.data == AUTH_EVENT) {
3990 if (event->u.mlme.status == MLME_DENIED)
3991 CHECK_MLME_TRIGGER(mvm, trig, buf,
3992 trig_mlme->stop_auth_denied,
3993 "DENIED AUTH: reason %d",
3994 event->u.mlme.reason);
3995 else if (event->u.mlme.status == MLME_TIMEOUT)
3996 CHECK_MLME_TRIGGER(mvm, trig, buf,
3997 trig_mlme->stop_auth_timeout,
3998 "AUTH TIMEOUT");
3999 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4000 CHECK_MLME_TRIGGER(mvm, trig, buf,
4001 trig_mlme->stop_rx_deauth,
4002 "DEAUTH RX %d", event->u.mlme.reason);
4003 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4004 CHECK_MLME_TRIGGER(mvm, trig, buf,
4005 trig_mlme->stop_tx_deauth,
4006 "DEAUTH TX %d", event->u.mlme.reason);
4007 }
4008 #undef CHECK_MLME_TRIGGER
4009 }
4010
4011 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4012 struct ieee80211_vif *vif,
4013 const struct ieee80211_event *event)
4014 {
4015 struct iwl_fw_dbg_trigger_tlv *trig;
4016 struct iwl_fw_dbg_trigger_ba *ba_trig;
4017
4018 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4019 return;
4020
4021 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4022 ba_trig = (void *)trig->data;
4023 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4024 return;
4025
4026 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4027 return;
4028
4029 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4030 "BAR received from %pM, tid %d, ssn %d",
4031 event->u.ba.sta->addr, event->u.ba.tid,
4032 event->u.ba.ssn);
4033 }
4034
4035 static void
4036 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4037 struct ieee80211_vif *vif,
4038 const struct ieee80211_event *event)
4039 {
4040 struct iwl_fw_dbg_trigger_tlv *trig;
4041 struct iwl_fw_dbg_trigger_ba *ba_trig;
4042
4043 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4044 return;
4045
4046 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4047 ba_trig = (void *)trig->data;
4048 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4049 return;
4050
4051 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4052 return;
4053
4054 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4055 "Frame from %pM timed out, tid %d",
4056 event->u.ba.sta->addr, event->u.ba.tid);
4057 }
4058
4059 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4060 struct ieee80211_vif *vif,
4061 const struct ieee80211_event *event)
4062 {
4063 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4064
4065 switch (event->type) {
4066 case MLME_EVENT:
4067 iwl_mvm_event_mlme_callback(mvm, vif, event);
4068 break;
4069 case BAR_RX_EVENT:
4070 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4071 break;
4072 case BA_FRAME_TIMEOUT:
4073 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4074 break;
4075 default:
4076 break;
4077 }
4078 }
4079
4080 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4081 struct iwl_mvm_internal_rxq_notif *notif,
4082 u32 size)
4083 {
4084 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(notif_waitq);
4085 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4086 int ret;
4087
4088 lockdep_assert_held(&mvm->mutex);
4089
4090 if (!iwl_mvm_has_new_rx_api(mvm))
4091 return;
4092
4093 notif->cookie = mvm->queue_sync_cookie;
4094
4095 if (notif->sync)
4096 atomic_set(&mvm->queue_sync_counter,
4097 mvm->trans->num_rx_queues);
4098
4099 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4100 if (ret) {
4101 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4102 goto out;
4103 }
4104
4105 if (notif->sync)
4106 ret = wait_event_timeout(notif_waitq,
4107 atomic_read(&mvm->queue_sync_counter) == 0,
4108 HZ);
4109 WARN_ON_ONCE(!ret);
4110
4111 out:
4112 atomic_set(&mvm->queue_sync_counter, 0);
4113 mvm->queue_sync_cookie++;
4114 }
4115
4116 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4117 {
4118 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4119 struct iwl_mvm_internal_rxq_notif data = {
4120 .type = IWL_MVM_RXQ_EMPTY,
4121 .sync = 1,
4122 };
4123
4124 mutex_lock(&mvm->mutex);
4125 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4126 mutex_unlock(&mvm->mutex);
4127 }
4128
4129 const struct ieee80211_ops iwl_mvm_hw_ops = {
4130 .tx = iwl_mvm_mac_tx,
4131 .ampdu_action = iwl_mvm_mac_ampdu_action,
4132 .start = iwl_mvm_mac_start,
4133 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4134 .stop = iwl_mvm_mac_stop,
4135 .add_interface = iwl_mvm_mac_add_interface,
4136 .remove_interface = iwl_mvm_mac_remove_interface,
4137 .config = iwl_mvm_mac_config,
4138 .prepare_multicast = iwl_mvm_prepare_multicast,
4139 .configure_filter = iwl_mvm_configure_filter,
4140 .config_iface_filter = iwl_mvm_config_iface_filter,
4141 .bss_info_changed = iwl_mvm_bss_info_changed,
4142 .hw_scan = iwl_mvm_mac_hw_scan,
4143 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4144 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4145 .sta_state = iwl_mvm_mac_sta_state,
4146 .sta_notify = iwl_mvm_mac_sta_notify,
4147 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4148 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4149 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4150 .sta_rc_update = iwl_mvm_sta_rc_update,
4151 .conf_tx = iwl_mvm_mac_conf_tx,
4152 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4153 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4154 .flush = iwl_mvm_mac_flush,
4155 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4156 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4157 .set_key = iwl_mvm_mac_set_key,
4158 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4159 .remain_on_channel = iwl_mvm_roc,
4160 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4161 .add_chanctx = iwl_mvm_add_chanctx,
4162 .remove_chanctx = iwl_mvm_remove_chanctx,
4163 .change_chanctx = iwl_mvm_change_chanctx,
4164 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4165 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4166 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4167
4168 .start_ap = iwl_mvm_start_ap_ibss,
4169 .stop_ap = iwl_mvm_stop_ap_ibss,
4170 .join_ibss = iwl_mvm_start_ap_ibss,
4171 .leave_ibss = iwl_mvm_stop_ap_ibss,
4172
4173 .set_tim = iwl_mvm_set_tim,
4174
4175 .channel_switch = iwl_mvm_channel_switch,
4176 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4177 .post_channel_switch = iwl_mvm_post_channel_switch,
4178
4179 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4180 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4181 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4182
4183 .event_callback = iwl_mvm_mac_event_callback,
4184
4185 .sync_rx_queues = iwl_mvm_sync_rx_queues,
4186
4187 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4188
4189 #ifdef CONFIG_PM_SLEEP
4190 /* look at d3.c */
4191 .suspend = iwl_mvm_suspend,
4192 .resume = iwl_mvm_resume,
4193 .set_wakeup = iwl_mvm_set_wakeup,
4194 .set_rekey_data = iwl_mvm_set_rekey_data,
4195 #if IS_ENABLED(CONFIG_IPV6)
4196 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4197 #endif
4198 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4199 #endif
4200 .get_survey = iwl_mvm_mac_get_survey,
4201 .sta_statistics = iwl_mvm_mac_sta_statistics,
4202 };
Linux kernel - Deliverables
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