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nl80211: allow multiple active scheduled scan requests
[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / intel / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 - 2017 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 - 2015 Intel Mobile Communications GmbH
37 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
38 * All rights reserved.
39 *
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
42 * are met:
43 *
44 * * Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * * Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in
48 * the documentation and/or other materials provided with the
49 * distribution.
50 * * Neither the name Intel Corporation nor the names of its
51 * contributors may be used to endorse or promote products derived
52 * from this software without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65 *
66 *****************************************************************************/
67 #include <linux/kernel.h>
68 #include <linux/slab.h>
69 #include <linux/skbuff.h>
70 #include <linux/netdevice.h>
71 #include <linux/etherdevice.h>
72 #include <linux/ip.h>
73 #include <linux/if_arp.h>
74 #include <linux/time.h>
75 #include <net/mac80211.h>
76 #include <net/ieee80211_radiotap.h>
77 #include <net/tcp.h>
78
79 #include "iwl-op-mode.h"
80 #include "iwl-io.h"
81 #include "mvm.h"
82 #include "sta.h"
83 #include "time-event.h"
84 #include "iwl-eeprom-parse.h"
85 #include "iwl-phy-db.h"
86 #include "testmode.h"
87 #include "iwl-fw-error-dump.h"
88 #include "iwl-prph.h"
89 #include "iwl-nvm-parse.h"
90 #include "fw-dbg.h"
91
92 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
93 {
94 .max = 1,
95 .types = BIT(NL80211_IFTYPE_STATION),
96 },
97 {
98 .max = 1,
99 .types = BIT(NL80211_IFTYPE_AP) |
100 BIT(NL80211_IFTYPE_P2P_CLIENT) |
101 BIT(NL80211_IFTYPE_P2P_GO),
102 },
103 {
104 .max = 1,
105 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
106 },
107 };
108
109 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
110 {
111 .num_different_channels = 2,
112 .max_interfaces = 3,
113 .limits = iwl_mvm_limits,
114 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
115 },
116 };
117
118 #ifdef CONFIG_PM_SLEEP
119 static const struct nl80211_wowlan_tcp_data_token_feature
120 iwl_mvm_wowlan_tcp_token_feature = {
121 .min_len = 0,
122 .max_len = 255,
123 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
124 };
125
126 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
127 .tok = &iwl_mvm_wowlan_tcp_token_feature,
128 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
129 sizeof(struct ethhdr) -
130 sizeof(struct iphdr) -
131 sizeof(struct tcphdr),
132 .data_interval_max = 65535, /* __le16 in API */
133 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
134 sizeof(struct ethhdr) -
135 sizeof(struct iphdr) -
136 sizeof(struct tcphdr),
137 .seq = true,
138 };
139 #endif
140
141 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
142 /*
143 * Use the reserved field to indicate magic values.
144 * these values will only be used internally by the driver,
145 * and won't make it to the fw (reserved will be 0).
146 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
147 * be the vif's ip address. in case there is not a single
148 * ip address (0, or more than 1), this attribute will
149 * be skipped.
150 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
151 * the LSB bytes of the vif's mac address
152 */
153 enum {
154 BC_FILTER_MAGIC_NONE = 0,
155 BC_FILTER_MAGIC_IP,
156 BC_FILTER_MAGIC_MAC,
157 };
158
159 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
160 {
161 /* arp */
162 .discard = 0,
163 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
164 .attrs = {
165 {
166 /* frame type - arp, hw type - ethernet */
167 .offset_type =
168 BCAST_FILTER_OFFSET_PAYLOAD_START,
169 .offset = sizeof(rfc1042_header),
170 .val = cpu_to_be32(0x08060001),
171 .mask = cpu_to_be32(0xffffffff),
172 },
173 {
174 /* arp dest ip */
175 .offset_type =
176 BCAST_FILTER_OFFSET_PAYLOAD_START,
177 .offset = sizeof(rfc1042_header) + 2 +
178 sizeof(struct arphdr) +
179 ETH_ALEN + sizeof(__be32) +
180 ETH_ALEN,
181 .mask = cpu_to_be32(0xffffffff),
182 /* mark it as special field */
183 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
184 },
185 },
186 },
187 {
188 /* dhcp offer bcast */
189 .discard = 0,
190 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
191 .attrs = {
192 {
193 /* udp dest port - 68 (bootp client)*/
194 .offset_type = BCAST_FILTER_OFFSET_IP_END,
195 .offset = offsetof(struct udphdr, dest),
196 .val = cpu_to_be32(0x00440000),
197 .mask = cpu_to_be32(0xffff0000),
198 },
199 {
200 /* dhcp - lsb bytes of client hw address */
201 .offset_type = BCAST_FILTER_OFFSET_IP_END,
202 .offset = 38,
203 .mask = cpu_to_be32(0xffffffff),
204 /* mark it as special field */
205 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
206 },
207 },
208 },
209 /* last filter must be empty */
210 {},
211 };
212 #endif
213
214 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
215 {
216 if (!iwl_mvm_is_d0i3_supported(mvm))
217 return;
218
219 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
220 spin_lock_bh(&mvm->refs_lock);
221 mvm->refs[ref_type]++;
222 spin_unlock_bh(&mvm->refs_lock);
223 iwl_trans_ref(mvm->trans);
224 }
225
226 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
227 {
228 if (!iwl_mvm_is_d0i3_supported(mvm))
229 return;
230
231 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
232 spin_lock_bh(&mvm->refs_lock);
233 if (WARN_ON(!mvm->refs[ref_type])) {
234 spin_unlock_bh(&mvm->refs_lock);
235 return;
236 }
237 mvm->refs[ref_type]--;
238 spin_unlock_bh(&mvm->refs_lock);
239 iwl_trans_unref(mvm->trans);
240 }
241
242 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
243 enum iwl_mvm_ref_type except_ref)
244 {
245 int i, j;
246
247 if (!iwl_mvm_is_d0i3_supported(mvm))
248 return;
249
250 spin_lock_bh(&mvm->refs_lock);
251 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
252 if (except_ref == i || !mvm->refs[i])
253 continue;
254
255 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
256 i, mvm->refs[i]);
257 for (j = 0; j < mvm->refs[i]; j++)
258 iwl_trans_unref(mvm->trans);
259 mvm->refs[i] = 0;
260 }
261 spin_unlock_bh(&mvm->refs_lock);
262 }
263
264 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
265 {
266 int i;
267 bool taken = false;
268
269 if (!iwl_mvm_is_d0i3_supported(mvm))
270 return true;
271
272 spin_lock_bh(&mvm->refs_lock);
273 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
274 if (mvm->refs[i]) {
275 taken = true;
276 break;
277 }
278 }
279 spin_unlock_bh(&mvm->refs_lock);
280
281 return taken;
282 }
283
284 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
285 {
286 iwl_mvm_ref(mvm, ref_type);
287
288 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
289 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
290 HZ)) {
291 WARN_ON_ONCE(1);
292 iwl_mvm_unref(mvm, ref_type);
293 return -EIO;
294 }
295
296 return 0;
297 }
298
299 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
300 {
301 int i;
302
303 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
304 for (i = 0; i < NUM_PHY_CTX; i++) {
305 mvm->phy_ctxts[i].id = i;
306 mvm->phy_ctxts[i].ref = 0;
307 }
308 }
309
310 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
311 const char *alpha2,
312 enum iwl_mcc_source src_id,
313 bool *changed)
314 {
315 struct ieee80211_regdomain *regd = NULL;
316 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
317 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
318 struct iwl_mcc_update_resp *resp;
319
320 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
321
322 lockdep_assert_held(&mvm->mutex);
323
324 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
325 if (IS_ERR_OR_NULL(resp)) {
326 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
327 PTR_ERR_OR_ZERO(resp));
328 goto out;
329 }
330
331 if (changed)
332 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
333
334 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
335 __le32_to_cpu(resp->n_channels),
336 resp->channels,
337 __le16_to_cpu(resp->mcc));
338 /* Store the return source id */
339 src_id = resp->source_id;
340 kfree(resp);
341 if (IS_ERR_OR_NULL(regd)) {
342 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
343 PTR_ERR_OR_ZERO(regd));
344 goto out;
345 }
346
347 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
348 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
349 mvm->lar_regdom_set = true;
350 mvm->mcc_src = src_id;
351
352 out:
353 return regd;
354 }
355
356 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
357 {
358 bool changed;
359 struct ieee80211_regdomain *regd;
360
361 if (!iwl_mvm_is_lar_supported(mvm))
362 return;
363
364 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
365 if (!IS_ERR_OR_NULL(regd)) {
366 /* only update the regulatory core if changed */
367 if (changed)
368 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
369
370 kfree(regd);
371 }
372 }
373
374 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
375 bool *changed)
376 {
377 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
378 iwl_mvm_is_wifi_mcc_supported(mvm) ?
379 MCC_SOURCE_GET_CURRENT :
380 MCC_SOURCE_OLD_FW, changed);
381 }
382
383 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
384 {
385 enum iwl_mcc_source used_src;
386 struct ieee80211_regdomain *regd;
387 int ret;
388 bool changed;
389 const struct ieee80211_regdomain *r =
390 rtnl_dereference(mvm->hw->wiphy->regd);
391
392 if (!r)
393 return -ENOENT;
394
395 /* save the last source in case we overwrite it below */
396 used_src = mvm->mcc_src;
397 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
398 /* Notify the firmware we support wifi location updates */
399 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
400 if (!IS_ERR_OR_NULL(regd))
401 kfree(regd);
402 }
403
404 /* Now set our last stored MCC and source */
405 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
406 &changed);
407 if (IS_ERR_OR_NULL(regd))
408 return -EIO;
409
410 /* update cfg80211 if the regdomain was changed */
411 if (changed)
412 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
413 else
414 ret = 0;
415
416 kfree(regd);
417 return ret;
418 }
419
420 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
421 {
422 struct ieee80211_hw *hw = mvm->hw;
423 int num_mac, ret, i;
424 static const u32 mvm_ciphers[] = {
425 WLAN_CIPHER_SUITE_WEP40,
426 WLAN_CIPHER_SUITE_WEP104,
427 WLAN_CIPHER_SUITE_TKIP,
428 WLAN_CIPHER_SUITE_CCMP,
429 };
430
431 /* Tell mac80211 our characteristics */
432 ieee80211_hw_set(hw, SIGNAL_DBM);
433 ieee80211_hw_set(hw, SPECTRUM_MGMT);
434 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
435 ieee80211_hw_set(hw, QUEUE_CONTROL);
436 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
437 ieee80211_hw_set(hw, SUPPORTS_PS);
438 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
439 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
440 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
441 ieee80211_hw_set(hw, CONNECTION_MONITOR);
442 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
443 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
444 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
445 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
446 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
447 if (iwl_mvm_has_new_rx_api(mvm))
448 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
449 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_STA_PM_NOTIF))
450 ieee80211_hw_set(hw, AP_LINK_PS);
451
452 if (mvm->trans->num_rx_queues > 1)
453 ieee80211_hw_set(hw, USES_RSS);
454
455 if (mvm->trans->max_skb_frags)
456 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
457
458 if (!iwl_mvm_is_dqa_supported(mvm))
459 hw->queues = mvm->first_agg_queue;
460 else
461 hw->queues = IEEE80211_MAX_QUEUES;
462 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
463 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
464 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
465 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
466 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
467
468 hw->radiotap_timestamp.units_pos =
469 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
470 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
471 /* this is the case for CCK frames, it's better (only 8) for OFDM */
472 hw->radiotap_timestamp.accuracy = 22;
473
474 hw->rate_control_algorithm = "iwl-mvm-rs";
475 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
476 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
477
478 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
479 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
480 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
481 hw->wiphy->cipher_suites = mvm->ciphers;
482
483 if (iwl_mvm_has_new_rx_api(mvm)) {
484 mvm->ciphers[hw->wiphy->n_cipher_suites] =
485 WLAN_CIPHER_SUITE_GCMP;
486 hw->wiphy->n_cipher_suites++;
487 mvm->ciphers[hw->wiphy->n_cipher_suites] =
488 WLAN_CIPHER_SUITE_GCMP_256;
489 hw->wiphy->n_cipher_suites++;
490 }
491
492 /* Enable 11w if software crypto is not enabled (as the
493 * firmware will interpret some mgmt packets, so enabling it
494 * with software crypto isn't safe).
495 */
496 if (!iwlwifi_mod_params.sw_crypto) {
497 ieee80211_hw_set(hw, MFP_CAPABLE);
498 mvm->ciphers[hw->wiphy->n_cipher_suites] =
499 WLAN_CIPHER_SUITE_AES_CMAC;
500 hw->wiphy->n_cipher_suites++;
501 if (iwl_mvm_has_new_rx_api(mvm)) {
502 mvm->ciphers[hw->wiphy->n_cipher_suites] =
503 WLAN_CIPHER_SUITE_BIP_GMAC_128;
504 hw->wiphy->n_cipher_suites++;
505 mvm->ciphers[hw->wiphy->n_cipher_suites] =
506 WLAN_CIPHER_SUITE_BIP_GMAC_256;
507 hw->wiphy->n_cipher_suites++;
508 }
509 }
510
511 /* currently FW API supports only one optional cipher scheme */
512 if (mvm->fw->cs[0].cipher) {
513 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
514 struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
515
516 mvm->hw->n_cipher_schemes = 1;
517
518 cs->cipher = le32_to_cpu(fwcs->cipher);
519 cs->iftype = BIT(NL80211_IFTYPE_STATION);
520 cs->hdr_len = fwcs->hdr_len;
521 cs->pn_len = fwcs->pn_len;
522 cs->pn_off = fwcs->pn_off;
523 cs->key_idx_off = fwcs->key_idx_off;
524 cs->key_idx_mask = fwcs->key_idx_mask;
525 cs->key_idx_shift = fwcs->key_idx_shift;
526 cs->mic_len = fwcs->mic_len;
527
528 mvm->hw->cipher_schemes = mvm->cs;
529 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
530 hw->wiphy->n_cipher_suites++;
531 }
532
533 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
534 hw->wiphy->features |=
535 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
536 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
537 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
538
539 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
540 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
541 hw->chanctx_data_size = sizeof(u16);
542
543 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
544 BIT(NL80211_IFTYPE_P2P_CLIENT) |
545 BIT(NL80211_IFTYPE_AP) |
546 BIT(NL80211_IFTYPE_P2P_GO) |
547 BIT(NL80211_IFTYPE_P2P_DEVICE) |
548 BIT(NL80211_IFTYPE_ADHOC);
549
550 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
551 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
552 if (iwl_mvm_is_lar_supported(mvm))
553 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
554 else
555 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
556 REGULATORY_DISABLE_BEACON_HINTS;
557
558 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
559 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
560
561 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
562 hw->wiphy->n_iface_combinations =
563 ARRAY_SIZE(iwl_mvm_iface_combinations);
564
565 hw->wiphy->max_remain_on_channel_duration = 10000;
566 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
567 /* we can compensate an offset of up to 3 channels = 15 MHz */
568 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
569
570 /* Extract MAC address */
571 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
572 hw->wiphy->addresses = mvm->addresses;
573 hw->wiphy->n_addresses = 1;
574
575 /* Extract additional MAC addresses if available */
576 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
577 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
578
579 for (i = 1; i < num_mac; i++) {
580 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
581 ETH_ALEN);
582 mvm->addresses[i].addr[5]++;
583 hw->wiphy->n_addresses++;
584 }
585
586 iwl_mvm_reset_phy_ctxts(mvm);
587
588 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
589
590 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
591
592 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
593 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
594 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
595
596 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
597 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
598 else
599 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
600
601 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
602 hw->wiphy->bands[NL80211_BAND_2GHZ] =
603 &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
604 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
605 hw->wiphy->bands[NL80211_BAND_5GHZ] =
606 &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
607
608 if (fw_has_capa(&mvm->fw->ucode_capa,
609 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
610 fw_has_api(&mvm->fw->ucode_capa,
611 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
612 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
613 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
614 }
615
616 hw->wiphy->hw_version = mvm->trans->hw_id;
617
618 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
619 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
620 else
621 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
622
623 hw->wiphy->max_sched_scan_reqs = 1;
624 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
625 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
626 /* we create the 802.11 header and zero length SSID IE. */
627 hw->wiphy->max_sched_scan_ie_len =
628 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
629 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
630 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
631
632 /*
633 * the firmware uses u8 for num of iterations, but 0xff is saved for
634 * infinite loop, so the maximum number of iterations is actually 254.
635 */
636 hw->wiphy->max_sched_scan_plan_iterations = 254;
637
638 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
639 NL80211_FEATURE_LOW_PRIORITY_SCAN |
640 NL80211_FEATURE_P2P_GO_OPPPS |
641 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
642 NL80211_FEATURE_DYNAMIC_SMPS |
643 NL80211_FEATURE_STATIC_SMPS |
644 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
645
646 if (fw_has_capa(&mvm->fw->ucode_capa,
647 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
648 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
649 if (fw_has_capa(&mvm->fw->ucode_capa,
650 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
651 hw->wiphy->features |= NL80211_FEATURE_QUIET;
652
653 if (fw_has_capa(&mvm->fw->ucode_capa,
654 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
655 hw->wiphy->features |=
656 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
657
658 if (fw_has_capa(&mvm->fw->ucode_capa,
659 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
660 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
661
662 if (fw_has_api(&mvm->fw->ucode_capa,
663 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
664 wiphy_ext_feature_set(hw->wiphy,
665 NL80211_EXT_FEATURE_SCAN_START_TIME);
666 wiphy_ext_feature_set(hw->wiphy,
667 NL80211_EXT_FEATURE_BSS_PARENT_TSF);
668 wiphy_ext_feature_set(hw->wiphy,
669 NL80211_EXT_FEATURE_SET_SCAN_DWELL);
670 }
671
672 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
673
674 #ifdef CONFIG_PM_SLEEP
675 if (iwl_mvm_is_d0i3_supported(mvm) &&
676 device_can_wakeup(mvm->trans->dev)) {
677 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
678 hw->wiphy->wowlan = &mvm->wowlan;
679 }
680
681 if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec &&
682 mvm->trans->ops->d3_suspend &&
683 mvm->trans->ops->d3_resume &&
684 device_can_wakeup(mvm->trans->dev)) {
685 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
686 WIPHY_WOWLAN_DISCONNECT |
687 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
688 WIPHY_WOWLAN_RFKILL_RELEASE |
689 WIPHY_WOWLAN_NET_DETECT;
690 if (!iwlwifi_mod_params.sw_crypto)
691 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
692 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
693 WIPHY_WOWLAN_4WAY_HANDSHAKE;
694
695 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
696 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
697 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
698 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
699 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
700 hw->wiphy->wowlan = &mvm->wowlan;
701 }
702 #endif
703
704 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
705 /* assign default bcast filtering configuration */
706 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
707 #endif
708
709 ret = iwl_mvm_leds_init(mvm);
710 if (ret)
711 return ret;
712
713 if (fw_has_capa(&mvm->fw->ucode_capa,
714 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
715 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
716 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
717 ieee80211_hw_set(hw, TDLS_WIDER_BW);
718 }
719
720 if (fw_has_capa(&mvm->fw->ucode_capa,
721 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
722 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
723 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
724 }
725
726 hw->netdev_features |= mvm->cfg->features;
727 if (!iwl_mvm_is_csum_supported(mvm)) {
728 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
729 NETIF_F_RXCSUM);
730 /* We may support SW TX CSUM */
731 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
732 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
733 }
734
735 ret = ieee80211_register_hw(mvm->hw);
736 if (ret)
737 iwl_mvm_leds_exit(mvm);
738
739 if (mvm->cfg->vht_mu_mimo_supported)
740 wiphy_ext_feature_set(hw->wiphy,
741 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
742
743 return ret;
744 }
745
746 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
747 struct ieee80211_sta *sta,
748 struct sk_buff *skb)
749 {
750 struct iwl_mvm_sta *mvmsta;
751 bool defer = false;
752
753 /*
754 * double check the IN_D0I3 flag both before and after
755 * taking the spinlock, in order to prevent taking
756 * the spinlock when not needed.
757 */
758 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
759 return false;
760
761 spin_lock(&mvm->d0i3_tx_lock);
762 /*
763 * testing the flag again ensures the skb dequeue
764 * loop (on d0i3 exit) hasn't run yet.
765 */
766 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
767 goto out;
768
769 mvmsta = iwl_mvm_sta_from_mac80211(sta);
770 if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
771 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
772 goto out;
773
774 __skb_queue_tail(&mvm->d0i3_tx, skb);
775 ieee80211_stop_queues(mvm->hw);
776
777 /* trigger wakeup */
778 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
779 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
780
781 defer = true;
782 out:
783 spin_unlock(&mvm->d0i3_tx_lock);
784 return defer;
785 }
786
787 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
788 struct ieee80211_tx_control *control,
789 struct sk_buff *skb)
790 {
791 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
792 struct ieee80211_sta *sta = control->sta;
793 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
794 struct ieee80211_hdr *hdr = (void *)skb->data;
795
796 if (iwl_mvm_is_radio_killed(mvm)) {
797 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
798 goto drop;
799 }
800
801 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
802 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
803 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
804 goto drop;
805
806 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
807 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
808 ieee80211_is_mgmt(hdr->frame_control) &&
809 !ieee80211_is_deauth(hdr->frame_control) &&
810 !ieee80211_is_disassoc(hdr->frame_control) &&
811 !ieee80211_is_action(hdr->frame_control)))
812 sta = NULL;
813
814 if (sta) {
815 if (iwl_mvm_defer_tx(mvm, sta, skb))
816 return;
817 if (iwl_mvm_tx_skb(mvm, skb, sta))
818 goto drop;
819 return;
820 }
821
822 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
823 goto drop;
824 return;
825 drop:
826 ieee80211_free_txskb(hw, skb);
827 }
828
829 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
830 {
831 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
832 return false;
833 return true;
834 }
835
836 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
837 {
838 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
839 return false;
840 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
841 return true;
842
843 /* enabled by default */
844 return true;
845 }
846
847 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
848 do { \
849 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
850 break; \
851 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
852 } while (0)
853
854 static void
855 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
856 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
857 enum ieee80211_ampdu_mlme_action action)
858 {
859 struct iwl_fw_dbg_trigger_tlv *trig;
860 struct iwl_fw_dbg_trigger_ba *ba_trig;
861
862 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
863 return;
864
865 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
866 ba_trig = (void *)trig->data;
867
868 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
869 return;
870
871 switch (action) {
872 case IEEE80211_AMPDU_TX_OPERATIONAL: {
873 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
874 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
875
876 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
877 "TX AGG START: MAC %pM tid %d ssn %d\n",
878 sta->addr, tid, tid_data->ssn);
879 break;
880 }
881 case IEEE80211_AMPDU_TX_STOP_CONT:
882 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
883 "TX AGG STOP: MAC %pM tid %d\n",
884 sta->addr, tid);
885 break;
886 case IEEE80211_AMPDU_RX_START:
887 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
888 "RX AGG START: MAC %pM tid %d ssn %d\n",
889 sta->addr, tid, rx_ba_ssn);
890 break;
891 case IEEE80211_AMPDU_RX_STOP:
892 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
893 "RX AGG STOP: MAC %pM tid %d\n",
894 sta->addr, tid);
895 break;
896 default:
897 break;
898 }
899 }
900
901 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
902 struct ieee80211_vif *vif,
903 struct ieee80211_ampdu_params *params)
904 {
905 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
906 int ret;
907 bool tx_agg_ref = false;
908 struct ieee80211_sta *sta = params->sta;
909 enum ieee80211_ampdu_mlme_action action = params->action;
910 u16 tid = params->tid;
911 u16 *ssn = &params->ssn;
912 u8 buf_size = params->buf_size;
913 bool amsdu = params->amsdu;
914 u16 timeout = params->timeout;
915
916 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
917 sta->addr, tid, action);
918
919 if (!(mvm->nvm_data->sku_cap_11n_enable))
920 return -EACCES;
921
922 /* return from D0i3 before starting a new Tx aggregation */
923 switch (action) {
924 case IEEE80211_AMPDU_TX_START:
925 case IEEE80211_AMPDU_TX_STOP_CONT:
926 case IEEE80211_AMPDU_TX_STOP_FLUSH:
927 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
928 case IEEE80211_AMPDU_TX_OPERATIONAL:
929 /*
930 * for tx start, wait synchronously until D0i3 exit to
931 * get the correct sequence number for the tid.
932 * additionally, some other ampdu actions use direct
933 * target access, which is not handled automatically
934 * by the trans layer (unlike commands), so wait for
935 * d0i3 exit in these cases as well.
936 */
937 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
938 if (ret)
939 return ret;
940
941 tx_agg_ref = true;
942 break;
943 default:
944 break;
945 }
946
947 mutex_lock(&mvm->mutex);
948
949 switch (action) {
950 case IEEE80211_AMPDU_RX_START:
951 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
952 ret = -EINVAL;
953 break;
954 }
955 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
956 timeout);
957 break;
958 case IEEE80211_AMPDU_RX_STOP:
959 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
960 timeout);
961 break;
962 case IEEE80211_AMPDU_TX_START:
963 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
964 ret = -EINVAL;
965 break;
966 }
967 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
968 break;
969 case IEEE80211_AMPDU_TX_STOP_CONT:
970 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
971 break;
972 case IEEE80211_AMPDU_TX_STOP_FLUSH:
973 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
974 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
975 break;
976 case IEEE80211_AMPDU_TX_OPERATIONAL:
977 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
978 buf_size, amsdu);
979 break;
980 default:
981 WARN_ON_ONCE(1);
982 ret = -EINVAL;
983 break;
984 }
985
986 if (!ret) {
987 u16 rx_ba_ssn = 0;
988
989 if (action == IEEE80211_AMPDU_RX_START)
990 rx_ba_ssn = *ssn;
991
992 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
993 rx_ba_ssn, action);
994 }
995 mutex_unlock(&mvm->mutex);
996
997 /*
998 * If the tid is marked as started, we won't use it for offloaded
999 * traffic on the next D0i3 entry. It's safe to unref.
1000 */
1001 if (tx_agg_ref)
1002 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
1003
1004 return ret;
1005 }
1006
1007 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1008 struct ieee80211_vif *vif)
1009 {
1010 struct iwl_mvm *mvm = data;
1011 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1012
1013 mvmvif->uploaded = false;
1014 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1015
1016 spin_lock_bh(&mvm->time_event_lock);
1017 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1018 spin_unlock_bh(&mvm->time_event_lock);
1019
1020 mvmvif->phy_ctxt = NULL;
1021 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1022 }
1023
1024 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1025 {
1026 /* clear the D3 reconfig, we only need it to avoid dumping a
1027 * firmware coredump on reconfiguration, we shouldn't do that
1028 * on D3->D0 transition
1029 */
1030 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1031 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1032 iwl_mvm_fw_error_dump(mvm);
1033 }
1034
1035 /* cleanup all stale references (scan, roc), but keep the
1036 * ucode_down ref until reconfig is complete
1037 */
1038 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1039
1040 iwl_mvm_stop_device(mvm);
1041
1042 mvm->scan_status = 0;
1043 mvm->ps_disabled = false;
1044 mvm->calibrating = false;
1045
1046 /* just in case one was running */
1047 iwl_mvm_cleanup_roc_te(mvm);
1048 ieee80211_remain_on_channel_expired(mvm->hw);
1049
1050 /*
1051 * cleanup all interfaces, even inactive ones, as some might have
1052 * gone down during the HW restart
1053 */
1054 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1055
1056 mvm->p2p_device_vif = NULL;
1057 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1058
1059 iwl_mvm_reset_phy_ctxts(mvm);
1060 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1061 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1062 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1063 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1064 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1065 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1066
1067 ieee80211_wake_queues(mvm->hw);
1068
1069 /* clear any stale d0i3 state */
1070 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1071
1072 mvm->vif_count = 0;
1073 mvm->rx_ba_sessions = 0;
1074 mvm->fw_dbg_conf = FW_DBG_INVALID;
1075
1076 /* keep statistics ticking */
1077 iwl_mvm_accu_radio_stats(mvm);
1078 }
1079
1080 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1081 {
1082 int ret;
1083
1084 lockdep_assert_held(&mvm->mutex);
1085
1086 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1087 /* Clean up some internal and mac80211 state on restart */
1088 iwl_mvm_restart_cleanup(mvm);
1089 } else {
1090 /* Hold the reference to prevent runtime suspend while
1091 * the start procedure runs. It's a bit confusing
1092 * that the UCODE_DOWN reference is taken, but it just
1093 * means "UCODE is not UP yet". ( TODO: rename this
1094 * reference).
1095 */
1096 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1097 }
1098 ret = iwl_mvm_up(mvm);
1099
1100 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1101 /* Something went wrong - we need to finish some cleanup
1102 * that normally iwl_mvm_mac_restart_complete() below
1103 * would do.
1104 */
1105 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1106 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1107 }
1108
1109 return ret;
1110 }
1111
1112 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1113 {
1114 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1115 int ret;
1116
1117 /* Some hw restart cleanups must not hold the mutex */
1118 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1119 /*
1120 * Make sure we are out of d0i3. This is needed
1121 * to make sure the reference accounting is correct
1122 * (and there is no stale d0i3_exit_work).
1123 */
1124 wait_event_timeout(mvm->d0i3_exit_waitq,
1125 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1126 &mvm->status),
1127 HZ);
1128 }
1129
1130 mutex_lock(&mvm->mutex);
1131 ret = __iwl_mvm_mac_start(mvm);
1132 mutex_unlock(&mvm->mutex);
1133
1134 return ret;
1135 }
1136
1137 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1138 {
1139 int ret;
1140
1141 mutex_lock(&mvm->mutex);
1142
1143 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1144 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1145 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1146 if (ret)
1147 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1148 ret);
1149
1150 /* allow transport/FW low power modes */
1151 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1152
1153 /*
1154 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1155 * of packets the FW sent out, so we must reconnect.
1156 */
1157 iwl_mvm_teardown_tdls_peers(mvm);
1158
1159 mutex_unlock(&mvm->mutex);
1160 }
1161
1162 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1163 {
1164 if (iwl_mvm_is_d0i3_supported(mvm) &&
1165 iwl_mvm_enter_d0i3_on_suspend(mvm))
1166 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1167 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1168 &mvm->status),
1169 HZ),
1170 "D0i3 exit on resume timed out\n");
1171 }
1172
1173 static void
1174 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1175 enum ieee80211_reconfig_type reconfig_type)
1176 {
1177 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1178
1179 switch (reconfig_type) {
1180 case IEEE80211_RECONFIG_TYPE_RESTART:
1181 iwl_mvm_restart_complete(mvm);
1182 break;
1183 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1184 iwl_mvm_resume_complete(mvm);
1185 break;
1186 }
1187 }
1188
1189 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1190 {
1191 lockdep_assert_held(&mvm->mutex);
1192
1193 /* firmware counters are obviously reset now, but we shouldn't
1194 * partially track so also clear the fw_reset_accu counters.
1195 */
1196 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1197
1198 /* async_handlers_wk is now blocked */
1199
1200 /*
1201 * The work item could be running or queued if the
1202 * ROC time event stops just as we get here.
1203 */
1204 flush_work(&mvm->roc_done_wk);
1205
1206 iwl_mvm_stop_device(mvm);
1207
1208 iwl_mvm_async_handlers_purge(mvm);
1209 /* async_handlers_list is empty and will stay empty: HW is stopped */
1210
1211 /* the fw is stopped, the aux sta is dead: clean up driver state */
1212 iwl_mvm_del_aux_sta(mvm);
1213
1214 /*
1215 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1216 * won't be called in this case).
1217 * But make sure to cleanup interfaces that have gone down before/during
1218 * HW restart was requested.
1219 */
1220 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1221 ieee80211_iterate_interfaces(mvm->hw, 0,
1222 iwl_mvm_cleanup_iterator, mvm);
1223
1224 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1225 * make sure there's nothing left there and warn if any is found.
1226 */
1227 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1228 int i;
1229
1230 for (i = 0; i < mvm->max_scans; i++) {
1231 if (WARN_ONCE(mvm->scan_uid_status[i],
1232 "UMAC scan UID %d status was not cleaned\n",
1233 i))
1234 mvm->scan_uid_status[i] = 0;
1235 }
1236 }
1237 }
1238
1239 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1240 {
1241 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1242
1243 flush_work(&mvm->d0i3_exit_work);
1244 flush_work(&mvm->async_handlers_wk);
1245 flush_work(&mvm->add_stream_wk);
1246 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1247 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1248 cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1249 iwl_mvm_free_fw_dump_desc(mvm);
1250
1251 mutex_lock(&mvm->mutex);
1252 __iwl_mvm_mac_stop(mvm);
1253 mutex_unlock(&mvm->mutex);
1254
1255 /*
1256 * The worker might have been waiting for the mutex, let it run and
1257 * discover that its list is now empty.
1258 */
1259 cancel_work_sync(&mvm->async_handlers_wk);
1260 }
1261
1262 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1263 {
1264 u16 i;
1265
1266 lockdep_assert_held(&mvm->mutex);
1267
1268 for (i = 0; i < NUM_PHY_CTX; i++)
1269 if (!mvm->phy_ctxts[i].ref)
1270 return &mvm->phy_ctxts[i];
1271
1272 IWL_ERR(mvm, "No available PHY context\n");
1273 return NULL;
1274 }
1275
1276 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1277 s16 tx_power)
1278 {
1279 struct iwl_dev_tx_power_cmd cmd = {
1280 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1281 .v3.mac_context_id =
1282 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1283 .v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1284 };
1285 int len = sizeof(cmd);
1286
1287 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1288 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1289
1290 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1291 len = sizeof(cmd.v3);
1292
1293 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1294 }
1295
1296 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1297 struct ieee80211_vif *vif)
1298 {
1299 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1300 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1301 int ret;
1302
1303 mvmvif->mvm = mvm;
1304
1305 /*
1306 * make sure D0i3 exit is completed, otherwise a target access
1307 * during tx queue configuration could be done when still in
1308 * D0i3 state.
1309 */
1310 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1311 if (ret)
1312 return ret;
1313
1314 /*
1315 * Not much to do here. The stack will not allow interface
1316 * types or combinations that we didn't advertise, so we
1317 * don't really have to check the types.
1318 */
1319
1320 mutex_lock(&mvm->mutex);
1321
1322 /* make sure that beacon statistics don't go backwards with FW reset */
1323 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1324 mvmvif->beacon_stats.accu_num_beacons +=
1325 mvmvif->beacon_stats.num_beacons;
1326
1327 /* Allocate resources for the MAC context, and add it to the fw */
1328 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1329 if (ret)
1330 goto out_unlock;
1331
1332 /* Counting number of interfaces is needed for legacy PM */
1333 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1334 mvm->vif_count++;
1335
1336 /*
1337 * The AP binding flow can be done only after the beacon
1338 * template is configured (which happens only in the mac80211
1339 * start_ap() flow), and adding the broadcast station can happen
1340 * only after the binding.
1341 * In addition, since modifying the MAC before adding a bcast
1342 * station is not allowed by the FW, delay the adding of MAC context to
1343 * the point where we can also add the bcast station.
1344 * In short: there's not much we can do at this point, other than
1345 * allocating resources :)
1346 */
1347 if (vif->type == NL80211_IFTYPE_AP ||
1348 vif->type == NL80211_IFTYPE_ADHOC) {
1349 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1350 if (ret) {
1351 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1352 goto out_release;
1353 }
1354
1355 if (iwl_mvm_is_dqa_supported(mvm)) {
1356 /*
1357 * Only queue for this station is the mcast queue,
1358 * which shouldn't be in TFD mask anyway
1359 */
1360 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1361 0, vif->type);
1362 if (ret)
1363 goto out_release;
1364 }
1365
1366 iwl_mvm_vif_dbgfs_register(mvm, vif);
1367 goto out_unlock;
1368 }
1369
1370 mvmvif->features |= hw->netdev_features;
1371
1372 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1373 if (ret)
1374 goto out_release;
1375
1376 ret = iwl_mvm_power_update_mac(mvm);
1377 if (ret)
1378 goto out_remove_mac;
1379
1380 /* beacon filtering */
1381 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1382 if (ret)
1383 goto out_remove_mac;
1384
1385 if (!mvm->bf_allowed_vif &&
1386 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1387 mvm->bf_allowed_vif = mvmvif;
1388 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1389 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1390 }
1391
1392 /*
1393 * P2P_DEVICE interface does not have a channel context assigned to it,
1394 * so a dedicated PHY context is allocated to it and the corresponding
1395 * MAC context is bound to it at this stage.
1396 */
1397 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1398
1399 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1400 if (!mvmvif->phy_ctxt) {
1401 ret = -ENOSPC;
1402 goto out_free_bf;
1403 }
1404
1405 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1406 ret = iwl_mvm_binding_add_vif(mvm, vif);
1407 if (ret)
1408 goto out_unref_phy;
1409
1410 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1411 if (ret)
1412 goto out_unbind;
1413
1414 /* Save a pointer to p2p device vif, so it can later be used to
1415 * update the p2p device MAC when a GO is started/stopped */
1416 mvm->p2p_device_vif = vif;
1417 }
1418
1419 iwl_mvm_vif_dbgfs_register(mvm, vif);
1420 goto out_unlock;
1421
1422 out_unbind:
1423 iwl_mvm_binding_remove_vif(mvm, vif);
1424 out_unref_phy:
1425 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1426 out_free_bf:
1427 if (mvm->bf_allowed_vif == mvmvif) {
1428 mvm->bf_allowed_vif = NULL;
1429 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1430 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1431 }
1432 out_remove_mac:
1433 mvmvif->phy_ctxt = NULL;
1434 iwl_mvm_mac_ctxt_remove(mvm, vif);
1435 out_release:
1436 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1437 mvm->vif_count--;
1438
1439 iwl_mvm_mac_ctxt_release(mvm, vif);
1440 out_unlock:
1441 mutex_unlock(&mvm->mutex);
1442
1443 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1444
1445 return ret;
1446 }
1447
1448 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1449 struct ieee80211_vif *vif)
1450 {
1451 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1452
1453 if (tfd_msk) {
1454 /*
1455 * mac80211 first removes all the stations of the vif and
1456 * then removes the vif. When it removes a station it also
1457 * flushes the AMPDU session. So by now, all the AMPDU sessions
1458 * of all the stations of this vif are closed, and the queues
1459 * of these AMPDU sessions are properly closed.
1460 * We still need to take care of the shared queues of the vif.
1461 * Flush them here.
1462 */
1463 mutex_lock(&mvm->mutex);
1464 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1465 mutex_unlock(&mvm->mutex);
1466
1467 /*
1468 * There are transports that buffer a few frames in the host.
1469 * For these, the flush above isn't enough since while we were
1470 * flushing, the transport might have sent more frames to the
1471 * device. To solve this, wait here until the transport is
1472 * empty. Technically, this could have replaced the flush
1473 * above, but flush is much faster than draining. So flush
1474 * first, and drain to make sure we have no frames in the
1475 * transport anymore.
1476 * If a station still had frames on the shared queues, it is
1477 * already marked as draining, so to complete the draining, we
1478 * just need to wait until the transport is empty.
1479 */
1480 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1481 }
1482
1483 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1484 /*
1485 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1486 * We assume here that all the packets sent to the OFFCHANNEL
1487 * queue are sent in ROC session.
1488 */
1489 flush_work(&mvm->roc_done_wk);
1490 } else {
1491 /*
1492 * By now, all the AC queues are empty. The AGG queues are
1493 * empty too. We already got all the Tx responses for all the
1494 * packets in the queues. The drain work can have been
1495 * triggered. Flush it.
1496 */
1497 flush_work(&mvm->sta_drained_wk);
1498 }
1499 }
1500
1501 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1502 struct ieee80211_vif *vif)
1503 {
1504 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1505 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1506
1507 iwl_mvm_prepare_mac_removal(mvm, vif);
1508
1509 mutex_lock(&mvm->mutex);
1510
1511 if (mvm->bf_allowed_vif == mvmvif) {
1512 mvm->bf_allowed_vif = NULL;
1513 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1514 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1515 }
1516
1517 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1518
1519 /*
1520 * For AP/GO interface, the tear down of the resources allocated to the
1521 * interface is be handled as part of the stop_ap flow.
1522 */
1523 if (vif->type == NL80211_IFTYPE_AP ||
1524 vif->type == NL80211_IFTYPE_ADHOC) {
1525 #ifdef CONFIG_NL80211_TESTMODE
1526 if (vif == mvm->noa_vif) {
1527 mvm->noa_vif = NULL;
1528 mvm->noa_duration = 0;
1529 }
1530 #endif
1531 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1532 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1533 goto out_release;
1534 }
1535
1536 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1537 mvm->p2p_device_vif = NULL;
1538 iwl_mvm_rm_bcast_sta(mvm, vif);
1539 iwl_mvm_binding_remove_vif(mvm, vif);
1540 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1541 mvmvif->phy_ctxt = NULL;
1542 }
1543
1544 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1545 mvm->vif_count--;
1546
1547 iwl_mvm_power_update_mac(mvm);
1548 iwl_mvm_mac_ctxt_remove(mvm, vif);
1549
1550 out_release:
1551 iwl_mvm_mac_ctxt_release(mvm, vif);
1552 mutex_unlock(&mvm->mutex);
1553 }
1554
1555 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1556 {
1557 return 0;
1558 }
1559
1560 struct iwl_mvm_mc_iter_data {
1561 struct iwl_mvm *mvm;
1562 int port_id;
1563 };
1564
1565 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1566 struct ieee80211_vif *vif)
1567 {
1568 struct iwl_mvm_mc_iter_data *data = _data;
1569 struct iwl_mvm *mvm = data->mvm;
1570 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1571 int ret, len;
1572
1573 /* if we don't have free ports, mcast frames will be dropped */
1574 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1575 return;
1576
1577 if (vif->type != NL80211_IFTYPE_STATION ||
1578 !vif->bss_conf.assoc)
1579 return;
1580
1581 cmd->port_id = data->port_id++;
1582 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1583 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1584
1585 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1586 if (ret)
1587 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1588 }
1589
1590 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1591 {
1592 struct iwl_mvm_mc_iter_data iter_data = {
1593 .mvm = mvm,
1594 };
1595
1596 lockdep_assert_held(&mvm->mutex);
1597
1598 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1599 return;
1600
1601 ieee80211_iterate_active_interfaces_atomic(
1602 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1603 iwl_mvm_mc_iface_iterator, &iter_data);
1604 }
1605
1606 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1607 struct netdev_hw_addr_list *mc_list)
1608 {
1609 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1610 struct iwl_mcast_filter_cmd *cmd;
1611 struct netdev_hw_addr *addr;
1612 int addr_count;
1613 bool pass_all;
1614 int len;
1615
1616 addr_count = netdev_hw_addr_list_count(mc_list);
1617 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1618 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1619 if (pass_all)
1620 addr_count = 0;
1621
1622 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1623 cmd = kzalloc(len, GFP_ATOMIC);
1624 if (!cmd)
1625 return 0;
1626
1627 if (pass_all) {
1628 cmd->pass_all = 1;
1629 return (u64)(unsigned long)cmd;
1630 }
1631
1632 netdev_hw_addr_list_for_each(addr, mc_list) {
1633 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1634 cmd->count, addr->addr);
1635 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1636 addr->addr, ETH_ALEN);
1637 cmd->count++;
1638 }
1639
1640 return (u64)(unsigned long)cmd;
1641 }
1642
1643 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1644 unsigned int changed_flags,
1645 unsigned int *total_flags,
1646 u64 multicast)
1647 {
1648 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1649 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1650
1651 mutex_lock(&mvm->mutex);
1652
1653 /* replace previous configuration */
1654 kfree(mvm->mcast_filter_cmd);
1655 mvm->mcast_filter_cmd = cmd;
1656
1657 if (!cmd)
1658 goto out;
1659
1660 iwl_mvm_recalc_multicast(mvm);
1661 out:
1662 mutex_unlock(&mvm->mutex);
1663 *total_flags = 0;
1664 }
1665
1666 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1667 struct ieee80211_vif *vif,
1668 unsigned int filter_flags,
1669 unsigned int changed_flags)
1670 {
1671 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1672
1673 /* We support only filter for probe requests */
1674 if (!(changed_flags & FIF_PROBE_REQ))
1675 return;
1676
1677 /* Supported only for p2p client interfaces */
1678 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1679 !vif->p2p)
1680 return;
1681
1682 mutex_lock(&mvm->mutex);
1683 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1684 mutex_unlock(&mvm->mutex);
1685 }
1686
1687 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1688 struct iwl_bcast_iter_data {
1689 struct iwl_mvm *mvm;
1690 struct iwl_bcast_filter_cmd *cmd;
1691 u8 current_filter;
1692 };
1693
1694 static void
1695 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1696 const struct iwl_fw_bcast_filter *in_filter,
1697 struct iwl_fw_bcast_filter *out_filter)
1698 {
1699 struct iwl_fw_bcast_filter_attr *attr;
1700 int i;
1701
1702 memcpy(out_filter, in_filter, sizeof(*out_filter));
1703
1704 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1705 attr = &out_filter->attrs[i];
1706
1707 if (!attr->mask)
1708 break;
1709
1710 switch (attr->reserved1) {
1711 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1712 if (vif->bss_conf.arp_addr_cnt != 1) {
1713 attr->mask = 0;
1714 continue;
1715 }
1716
1717 attr->val = vif->bss_conf.arp_addr_list[0];
1718 break;
1719 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1720 attr->val = *(__be32 *)&vif->addr[2];
1721 break;
1722 default:
1723 break;
1724 }
1725 attr->reserved1 = 0;
1726 out_filter->num_attrs++;
1727 }
1728 }
1729
1730 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1731 struct ieee80211_vif *vif)
1732 {
1733 struct iwl_bcast_iter_data *data = _data;
1734 struct iwl_mvm *mvm = data->mvm;
1735 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1736 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1737 struct iwl_fw_bcast_mac *bcast_mac;
1738 int i;
1739
1740 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1741 return;
1742
1743 bcast_mac = &cmd->macs[mvmvif->id];
1744
1745 /*
1746 * enable filtering only for associated stations, but not for P2P
1747 * Clients
1748 */
1749 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1750 !vif->bss_conf.assoc)
1751 return;
1752
1753 bcast_mac->default_discard = 1;
1754
1755 /* copy all configured filters */
1756 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1757 /*
1758 * Make sure we don't exceed our filters limit.
1759 * if there is still a valid filter to be configured,
1760 * be on the safe side and just allow bcast for this mac.
1761 */
1762 if (WARN_ON_ONCE(data->current_filter >=
1763 ARRAY_SIZE(cmd->filters))) {
1764 bcast_mac->default_discard = 0;
1765 bcast_mac->attached_filters = 0;
1766 break;
1767 }
1768
1769 iwl_mvm_set_bcast_filter(vif,
1770 &mvm->bcast_filters[i],
1771 &cmd->filters[data->current_filter]);
1772
1773 /* skip current filter if it contains no attributes */
1774 if (!cmd->filters[data->current_filter].num_attrs)
1775 continue;
1776
1777 /* attach the filter to current mac */
1778 bcast_mac->attached_filters |=
1779 cpu_to_le16(BIT(data->current_filter));
1780
1781 data->current_filter++;
1782 }
1783 }
1784
1785 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1786 struct iwl_bcast_filter_cmd *cmd)
1787 {
1788 struct iwl_bcast_iter_data iter_data = {
1789 .mvm = mvm,
1790 .cmd = cmd,
1791 };
1792
1793 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1794 return false;
1795
1796 memset(cmd, 0, sizeof(*cmd));
1797 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1798 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1799
1800 #ifdef CONFIG_IWLWIFI_DEBUGFS
1801 /* use debugfs filters/macs if override is configured */
1802 if (mvm->dbgfs_bcast_filtering.override) {
1803 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1804 sizeof(cmd->filters));
1805 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1806 sizeof(cmd->macs));
1807 return true;
1808 }
1809 #endif
1810
1811 /* if no filters are configured, do nothing */
1812 if (!mvm->bcast_filters)
1813 return false;
1814
1815 /* configure and attach these filters for each associated sta vif */
1816 ieee80211_iterate_active_interfaces(
1817 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1818 iwl_mvm_bcast_filter_iterator, &iter_data);
1819
1820 return true;
1821 }
1822
1823 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1824 {
1825 struct iwl_bcast_filter_cmd cmd;
1826
1827 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1828 return 0;
1829
1830 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1831 return 0;
1832
1833 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1834 sizeof(cmd), &cmd);
1835 }
1836 #else
1837 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1838 {
1839 return 0;
1840 }
1841 #endif
1842
1843 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1844 struct ieee80211_vif *vif)
1845 {
1846 struct iwl_mu_group_mgmt_cmd cmd = {};
1847
1848 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1849 WLAN_MEMBERSHIP_LEN);
1850 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1851 WLAN_USER_POSITION_LEN);
1852
1853 return iwl_mvm_send_cmd_pdu(mvm,
1854 WIDE_ID(DATA_PATH_GROUP,
1855 UPDATE_MU_GROUPS_CMD),
1856 0, sizeof(cmd), &cmd);
1857 }
1858
1859 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1860 struct ieee80211_vif *vif)
1861 {
1862 if (vif->mu_mimo_owner) {
1863 struct iwl_mu_group_mgmt_notif *notif = _data;
1864
1865 /*
1866 * MU-MIMO Group Id action frame is little endian. We treat
1867 * the data received from firmware as if it came from the
1868 * action frame, so no conversion is needed.
1869 */
1870 ieee80211_update_mu_groups(vif,
1871 (u8 *)&notif->membership_status,
1872 (u8 *)&notif->user_position);
1873 }
1874 }
1875
1876 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1877 struct iwl_rx_cmd_buffer *rxb)
1878 {
1879 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1880 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1881
1882 ieee80211_iterate_active_interfaces_atomic(
1883 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1884 iwl_mvm_mu_mimo_iface_iterator, notif);
1885 }
1886
1887 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1888 struct ieee80211_vif *vif,
1889 struct ieee80211_bss_conf *bss_conf,
1890 u32 changes)
1891 {
1892 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1893 int ret;
1894
1895 /*
1896 * Re-calculate the tsf id, as the master-slave relations depend on the
1897 * beacon interval, which was not known when the station interface was
1898 * added.
1899 */
1900 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1901 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1902
1903 if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1904 mvmvif->lqm_active)
1905 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1906 0, 0);
1907
1908 /*
1909 * If we're not associated yet, take the (new) BSSID before associating
1910 * so the firmware knows. If we're already associated, then use the old
1911 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1912 * branch for disassociation below.
1913 */
1914 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1915 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1916
1917 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1918 if (ret)
1919 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1920
1921 /* after sending it once, adopt mac80211 data */
1922 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1923 mvmvif->associated = bss_conf->assoc;
1924
1925 if (changes & BSS_CHANGED_ASSOC) {
1926 if (bss_conf->assoc) {
1927 /* clear statistics to get clean beacon counter */
1928 iwl_mvm_request_statistics(mvm, true);
1929 memset(&mvmvif->beacon_stats, 0,
1930 sizeof(mvmvif->beacon_stats));
1931
1932 /* add quota for this interface */
1933 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1934 if (ret) {
1935 IWL_ERR(mvm, "failed to update quotas\n");
1936 return;
1937 }
1938
1939 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1940 &mvm->status)) {
1941 /*
1942 * If we're restarting then the firmware will
1943 * obviously have lost synchronisation with
1944 * the AP. It will attempt to synchronise by
1945 * itself, but we can make it more reliable by
1946 * scheduling a session protection time event.
1947 *
1948 * The firmware needs to receive a beacon to
1949 * catch up with synchronisation, use 110% of
1950 * the beacon interval.
1951 *
1952 * Set a large maximum delay to allow for more
1953 * than a single interface.
1954 */
1955 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1956 iwl_mvm_protect_session(mvm, vif, dur, dur,
1957 5 * dur, false);
1958 }
1959
1960 iwl_mvm_sf_update(mvm, vif, false);
1961 iwl_mvm_power_vif_assoc(mvm, vif);
1962 if (vif->p2p) {
1963 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1964 iwl_mvm_update_smps(mvm, vif,
1965 IWL_MVM_SMPS_REQ_PROT,
1966 IEEE80211_SMPS_DYNAMIC);
1967 }
1968 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
1969 /*
1970 * If update fails - SF might be running in associated
1971 * mode while disassociated - which is forbidden.
1972 */
1973 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1974 "Failed to update SF upon disassociation\n");
1975
1976 /* remove AP station now that the MAC is unassoc */
1977 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1978 if (ret)
1979 IWL_ERR(mvm, "failed to remove AP station\n");
1980
1981 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1982 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1983 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1984 /* remove quota for this interface */
1985 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1986 if (ret)
1987 IWL_ERR(mvm, "failed to update quotas\n");
1988
1989 if (vif->p2p)
1990 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1991
1992 /* this will take the cleared BSSID from bss_conf */
1993 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1994 if (ret)
1995 IWL_ERR(mvm,
1996 "failed to update MAC %pM (clear after unassoc)\n",
1997 vif->addr);
1998 }
1999
2000 /*
2001 * The firmware tracks the MU-MIMO group on its own.
2002 * However, on HW restart we should restore this data.
2003 */
2004 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2005 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2006 ret = iwl_mvm_update_mu_groups(mvm, vif);
2007 if (ret)
2008 IWL_ERR(mvm,
2009 "failed to update VHT MU_MIMO groups\n");
2010 }
2011
2012 iwl_mvm_recalc_multicast(mvm);
2013 iwl_mvm_configure_bcast_filter(mvm);
2014
2015 /* reset rssi values */
2016 mvmvif->bf_data.ave_beacon_signal = 0;
2017
2018 iwl_mvm_bt_coex_vif_change(mvm);
2019 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2020 IEEE80211_SMPS_AUTOMATIC);
2021 if (fw_has_capa(&mvm->fw->ucode_capa,
2022 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2023 iwl_mvm_config_scan(mvm);
2024 }
2025
2026 if (changes & BSS_CHANGED_BEACON_INFO) {
2027 /*
2028 * We received a beacon from the associated AP so
2029 * remove the session protection.
2030 */
2031 iwl_mvm_remove_time_event(mvm, mvmvif,
2032 &mvmvif->time_event_data);
2033
2034 iwl_mvm_sf_update(mvm, vif, false);
2035 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2036 }
2037
2038 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2039 /*
2040 * Send power command on every beacon change,
2041 * because we may have not enabled beacon abort yet.
2042 */
2043 BSS_CHANGED_BEACON_INFO)) {
2044 ret = iwl_mvm_power_update_mac(mvm);
2045 if (ret)
2046 IWL_ERR(mvm, "failed to update power mode\n");
2047 }
2048
2049 if (changes & BSS_CHANGED_TXPOWER) {
2050 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2051 bss_conf->txpower);
2052 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2053 }
2054
2055 if (changes & BSS_CHANGED_CQM) {
2056 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2057 /* reset cqm events tracking */
2058 mvmvif->bf_data.last_cqm_event = 0;
2059 if (mvmvif->bf_data.bf_enabled) {
2060 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2061 if (ret)
2062 IWL_ERR(mvm,
2063 "failed to update CQM thresholds\n");
2064 }
2065 }
2066
2067 if (changes & BSS_CHANGED_ARP_FILTER) {
2068 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2069 iwl_mvm_configure_bcast_filter(mvm);
2070 }
2071 }
2072
2073 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2074 struct ieee80211_vif *vif)
2075 {
2076 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2077 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2078 int ret;
2079
2080 /*
2081 * iwl_mvm_mac_ctxt_add() might read directly from the device
2082 * (the system time), so make sure it is available.
2083 */
2084 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2085 if (ret)
2086 return ret;
2087
2088 mutex_lock(&mvm->mutex);
2089
2090 /* Send the beacon template */
2091 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2092 if (ret)
2093 goto out_unlock;
2094
2095 /*
2096 * Re-calculate the tsf id, as the master-slave relations depend on the
2097 * beacon interval, which was not known when the AP interface was added.
2098 */
2099 if (vif->type == NL80211_IFTYPE_AP)
2100 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2101
2102 mvmvif->ap_assoc_sta_count = 0;
2103
2104 /* Add the mac context */
2105 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2106 if (ret)
2107 goto out_unlock;
2108
2109 /* Perform the binding */
2110 ret = iwl_mvm_binding_add_vif(mvm, vif);
2111 if (ret)
2112 goto out_remove;
2113
2114 /* Send the bcast station. At this stage the TBTT and DTIM time events
2115 * are added and applied to the scheduler */
2116 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2117 if (ret)
2118 goto out_unbind;
2119
2120 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2121 if (ret)
2122 goto out_rm_bcast;
2123
2124 /* must be set before quota calculations */
2125 mvmvif->ap_ibss_active = true;
2126
2127 /* power updated needs to be done before quotas */
2128 iwl_mvm_power_update_mac(mvm);
2129
2130 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2131 if (ret)
2132 goto out_quota_failed;
2133
2134 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2135 if (vif->p2p && mvm->p2p_device_vif)
2136 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2137
2138 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2139
2140 iwl_mvm_bt_coex_vif_change(mvm);
2141
2142 /* we don't support TDLS during DCM */
2143 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2144 iwl_mvm_teardown_tdls_peers(mvm);
2145
2146 goto out_unlock;
2147
2148 out_quota_failed:
2149 iwl_mvm_power_update_mac(mvm);
2150 mvmvif->ap_ibss_active = false;
2151 iwl_mvm_rm_mcast_sta(mvm, vif);
2152 out_rm_bcast:
2153 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2154 out_unbind:
2155 iwl_mvm_binding_remove_vif(mvm, vif);
2156 out_remove:
2157 iwl_mvm_mac_ctxt_remove(mvm, vif);
2158 out_unlock:
2159 mutex_unlock(&mvm->mutex);
2160 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2161 return ret;
2162 }
2163
2164 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2165 struct ieee80211_vif *vif)
2166 {
2167 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2168 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2169
2170 iwl_mvm_prepare_mac_removal(mvm, vif);
2171
2172 mutex_lock(&mvm->mutex);
2173
2174 /* Handle AP stop while in CSA */
2175 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2176 iwl_mvm_remove_time_event(mvm, mvmvif,
2177 &mvmvif->time_event_data);
2178 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2179 mvmvif->csa_countdown = false;
2180 }
2181
2182 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2183 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2184 mvm->csa_tx_block_bcn_timeout = 0;
2185 }
2186
2187 mvmvif->ap_ibss_active = false;
2188 mvm->ap_last_beacon_gp2 = 0;
2189
2190 iwl_mvm_bt_coex_vif_change(mvm);
2191
2192 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2193
2194 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2195 if (vif->p2p && mvm->p2p_device_vif)
2196 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2197
2198 iwl_mvm_update_quotas(mvm, false, NULL);
2199 iwl_mvm_rm_mcast_sta(mvm, vif);
2200 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2201 iwl_mvm_binding_remove_vif(mvm, vif);
2202
2203 iwl_mvm_power_update_mac(mvm);
2204
2205 iwl_mvm_mac_ctxt_remove(mvm, vif);
2206
2207 mutex_unlock(&mvm->mutex);
2208 }
2209
2210 static void
2211 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2212 struct ieee80211_vif *vif,
2213 struct ieee80211_bss_conf *bss_conf,
2214 u32 changes)
2215 {
2216 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2217
2218 /* Changes will be applied when the AP/IBSS is started */
2219 if (!mvmvif->ap_ibss_active)
2220 return;
2221
2222 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2223 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2224 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2225 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2226
2227 /* Need to send a new beacon template to the FW */
2228 if (changes & BSS_CHANGED_BEACON &&
2229 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2230 IWL_WARN(mvm, "Failed updating beacon data\n");
2231
2232 if (changes & BSS_CHANGED_TXPOWER) {
2233 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2234 bss_conf->txpower);
2235 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2236 }
2237 }
2238
2239 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2240 struct ieee80211_vif *vif,
2241 struct ieee80211_bss_conf *bss_conf,
2242 u32 changes)
2243 {
2244 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2245
2246 /*
2247 * iwl_mvm_bss_info_changed_station() might call
2248 * iwl_mvm_protect_session(), which reads directly from
2249 * the device (the system time), so make sure it is available.
2250 */
2251 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2252 return;
2253
2254 mutex_lock(&mvm->mutex);
2255
2256 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2257 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2258
2259 switch (vif->type) {
2260 case NL80211_IFTYPE_STATION:
2261 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2262 break;
2263 case NL80211_IFTYPE_AP:
2264 case NL80211_IFTYPE_ADHOC:
2265 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2266 break;
2267 case NL80211_IFTYPE_MONITOR:
2268 if (changes & BSS_CHANGED_MU_GROUPS)
2269 iwl_mvm_update_mu_groups(mvm, vif);
2270 break;
2271 default:
2272 /* shouldn't happen */
2273 WARN_ON_ONCE(1);
2274 }
2275
2276 mutex_unlock(&mvm->mutex);
2277 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2278 }
2279
2280 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2281 struct ieee80211_vif *vif,
2282 struct ieee80211_scan_request *hw_req)
2283 {
2284 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2285 int ret;
2286
2287 if (hw_req->req.n_channels == 0 ||
2288 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2289 return -EINVAL;
2290
2291 mutex_lock(&mvm->mutex);
2292 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2293 mutex_unlock(&mvm->mutex);
2294
2295 return ret;
2296 }
2297
2298 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2299 struct ieee80211_vif *vif)
2300 {
2301 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2302
2303 mutex_lock(&mvm->mutex);
2304
2305 /* Due to a race condition, it's possible that mac80211 asks
2306 * us to stop a hw_scan when it's already stopped. This can
2307 * happen, for instance, if we stopped the scan ourselves,
2308 * called ieee80211_scan_completed() and the userspace called
2309 * cancel scan scan before ieee80211_scan_work() could run.
2310 * To handle that, simply return if the scan is not running.
2311 */
2312 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2313 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2314
2315 mutex_unlock(&mvm->mutex);
2316 }
2317
2318 static void
2319 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2320 struct ieee80211_sta *sta, u16 tids,
2321 int num_frames,
2322 enum ieee80211_frame_release_type reason,
2323 bool more_data)
2324 {
2325 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2326
2327 /* Called when we need to transmit (a) frame(s) from mac80211 */
2328
2329 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2330 tids, more_data, false);
2331 }
2332
2333 static void
2334 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2335 struct ieee80211_sta *sta, u16 tids,
2336 int num_frames,
2337 enum ieee80211_frame_release_type reason,
2338 bool more_data)
2339 {
2340 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2341
2342 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2343
2344 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2345 tids, more_data, true);
2346 }
2347
2348 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2349 enum sta_notify_cmd cmd,
2350 struct ieee80211_sta *sta)
2351 {
2352 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2353 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2354 unsigned long txqs = 0, tids = 0;
2355 int tid;
2356
2357 spin_lock_bh(&mvmsta->lock);
2358 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2359 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2360
2361 if (!iwl_mvm_is_dqa_supported(mvm) &&
2362 tid_data->state != IWL_AGG_ON &&
2363 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2364 continue;
2365
2366 if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE)
2367 continue;
2368
2369 __set_bit(tid_data->txq_id, &txqs);
2370
2371 if (iwl_mvm_tid_queued(tid_data) == 0)
2372 continue;
2373
2374 __set_bit(tid, &tids);
2375 }
2376
2377 switch (cmd) {
2378 case STA_NOTIFY_SLEEP:
2379 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2380 ieee80211_sta_block_awake(hw, sta, true);
2381
2382 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2383 ieee80211_sta_set_buffered(sta, tid, true);
2384
2385 if (txqs)
2386 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2387 /*
2388 * The fw updates the STA to be asleep. Tx packets on the Tx
2389 * queues to this station will not be transmitted. The fw will
2390 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2391 */
2392 break;
2393 case STA_NOTIFY_AWAKE:
2394 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2395 break;
2396
2397 if (txqs)
2398 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2399 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2400 break;
2401 default:
2402 break;
2403 }
2404 spin_unlock_bh(&mvmsta->lock);
2405 }
2406
2407 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2408 struct ieee80211_vif *vif,
2409 enum sta_notify_cmd cmd,
2410 struct ieee80211_sta *sta)
2411 {
2412 __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2413 }
2414
2415 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2416 {
2417 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2418 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2419 struct ieee80211_sta *sta;
2420 struct iwl_mvm_sta *mvmsta;
2421 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2422
2423 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2424 return;
2425
2426 rcu_read_lock();
2427 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2428 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2429 rcu_read_unlock();
2430 return;
2431 }
2432
2433 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2434
2435 if (!mvmsta->vif ||
2436 mvmsta->vif->type != NL80211_IFTYPE_AP) {
2437 rcu_read_unlock();
2438 return;
2439 }
2440
2441 if (mvmsta->sleeping != sleeping) {
2442 mvmsta->sleeping = sleeping;
2443 __iwl_mvm_mac_sta_notify(mvm->hw,
2444 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2445 sta);
2446 ieee80211_sta_ps_transition(sta, sleeping);
2447 }
2448
2449 if (sleeping) {
2450 switch (notif->type) {
2451 case IWL_MVM_PM_EVENT_AWAKE:
2452 case IWL_MVM_PM_EVENT_ASLEEP:
2453 break;
2454 case IWL_MVM_PM_EVENT_UAPSD:
2455 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2456 break;
2457 case IWL_MVM_PM_EVENT_PS_POLL:
2458 ieee80211_sta_pspoll(sta);
2459 break;
2460 default:
2461 break;
2462 }
2463 }
2464
2465 rcu_read_unlock();
2466 }
2467
2468 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2469 struct ieee80211_vif *vif,
2470 struct ieee80211_sta *sta)
2471 {
2472 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2473 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2474
2475 /*
2476 * This is called before mac80211 does RCU synchronisation,
2477 * so here we already invalidate our internal RCU-protected
2478 * station pointer. The rest of the code will thus no longer
2479 * be able to find the station this way, and we don't rely
2480 * on further RCU synchronisation after the sta_state()
2481 * callback deleted the station.
2482 */
2483 mutex_lock(&mvm->mutex);
2484 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2485 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2486 ERR_PTR(-ENOENT));
2487
2488 mutex_unlock(&mvm->mutex);
2489 }
2490
2491 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2492 const u8 *bssid)
2493 {
2494 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2495 return;
2496
2497 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2498 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2499 return;
2500 }
2501
2502 if (!vif->p2p &&
2503 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2504 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2505 return;
2506 }
2507
2508 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2509 }
2510
2511 static void
2512 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2513 struct ieee80211_vif *vif, u8 *peer_addr,
2514 enum nl80211_tdls_operation action)
2515 {
2516 struct iwl_fw_dbg_trigger_tlv *trig;
2517 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2518
2519 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2520 return;
2521
2522 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2523 tdls_trig = (void *)trig->data;
2524 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2525 return;
2526
2527 if (!(tdls_trig->action_bitmap & BIT(action)))
2528 return;
2529
2530 if (tdls_trig->peer_mode &&
2531 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2532 return;
2533
2534 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2535 "TDLS event occurred, peer %pM, action %d",
2536 peer_addr, action);
2537 }
2538
2539 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2540 struct iwl_mvm_sta *mvm_sta)
2541 {
2542 struct iwl_mvm_tid_data *tid_data;
2543 struct sk_buff *skb;
2544 int i;
2545
2546 spin_lock_bh(&mvm_sta->lock);
2547 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2548 tid_data = &mvm_sta->tid_data[i];
2549 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames)))
2550 ieee80211_free_txskb(mvm->hw, skb);
2551 }
2552 spin_unlock_bh(&mvm_sta->lock);
2553 }
2554
2555 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2556 struct ieee80211_vif *vif,
2557 struct ieee80211_sta *sta,
2558 enum ieee80211_sta_state old_state,
2559 enum ieee80211_sta_state new_state)
2560 {
2561 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2562 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2563 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2564 int ret;
2565
2566 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2567 sta->addr, old_state, new_state);
2568
2569 /* this would be a mac80211 bug ... but don't crash */
2570 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2571 return -EINVAL;
2572
2573 /* if a STA is being removed, reuse its ID */
2574 flush_work(&mvm->sta_drained_wk);
2575
2576 /*
2577 * If we are in a STA removal flow and in DQA mode:
2578 *
2579 * This is after the sync_rcu part, so the queues have already been
2580 * flushed. No more TXs on their way in mac80211's path, and no more in
2581 * the queues.
2582 * Also, we won't be getting any new TX frames for this station.
2583 * What we might have are deferred TX frames that need to be taken care
2584 * of.
2585 *
2586 * Drop any still-queued deferred-frame before removing the STA, and
2587 * make sure the worker is no longer handling frames for this STA.
2588 */
2589 if (old_state == IEEE80211_STA_NONE &&
2590 new_state == IEEE80211_STA_NOTEXIST &&
2591 iwl_mvm_is_dqa_supported(mvm)) {
2592 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2593 flush_work(&mvm->add_stream_wk);
2594
2595 /*
2596 * No need to make sure deferred TX indication is off since the
2597 * worker will already remove it if it was on
2598 */
2599 }
2600
2601 mutex_lock(&mvm->mutex);
2602 /* track whether or not the station is associated */
2603 mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC;
2604
2605 if (old_state == IEEE80211_STA_NOTEXIST &&
2606 new_state == IEEE80211_STA_NONE) {
2607 /*
2608 * Firmware bug - it'll crash if the beacon interval is less
2609 * than 16. We can't avoid connecting at all, so refuse the
2610 * station state change, this will cause mac80211 to abandon
2611 * attempts to connect to this AP, and eventually wpa_s will
2612 * blacklist the AP...
2613 */
2614 if (vif->type == NL80211_IFTYPE_STATION &&
2615 vif->bss_conf.beacon_int < 16) {
2616 IWL_ERR(mvm,
2617 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2618 sta->addr, vif->bss_conf.beacon_int);
2619 ret = -EINVAL;
2620 goto out_unlock;
2621 }
2622
2623 if (sta->tdls &&
2624 (vif->p2p ||
2625 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2626 IWL_MVM_TDLS_STA_COUNT ||
2627 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2628 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2629 ret = -EBUSY;
2630 goto out_unlock;
2631 }
2632
2633 ret = iwl_mvm_add_sta(mvm, vif, sta);
2634 if (sta->tdls && ret == 0) {
2635 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2636 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2637 NL80211_TDLS_SETUP);
2638 }
2639 } else if (old_state == IEEE80211_STA_NONE &&
2640 new_state == IEEE80211_STA_AUTH) {
2641 /*
2642 * EBS may be disabled due to previous failures reported by FW.
2643 * Reset EBS status here assuming environment has been changed.
2644 */
2645 mvm->last_ebs_successful = true;
2646 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2647 ret = 0;
2648 } else if (old_state == IEEE80211_STA_AUTH &&
2649 new_state == IEEE80211_STA_ASSOC) {
2650 if (vif->type == NL80211_IFTYPE_AP) {
2651 mvmvif->ap_assoc_sta_count++;
2652 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2653 }
2654
2655 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2656 true);
2657 ret = iwl_mvm_update_sta(mvm, vif, sta);
2658 } else if (old_state == IEEE80211_STA_ASSOC &&
2659 new_state == IEEE80211_STA_AUTHORIZED) {
2660
2661 /* we don't support TDLS during DCM */
2662 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2663 iwl_mvm_teardown_tdls_peers(mvm);
2664
2665 if (sta->tdls)
2666 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2667 NL80211_TDLS_ENABLE_LINK);
2668
2669 /* enable beacon filtering */
2670 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2671 ret = 0;
2672 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2673 new_state == IEEE80211_STA_ASSOC) {
2674 /* disable beacon filtering */
2675 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2676 ret = 0;
2677 } else if (old_state == IEEE80211_STA_ASSOC &&
2678 new_state == IEEE80211_STA_AUTH) {
2679 if (vif->type == NL80211_IFTYPE_AP) {
2680 mvmvif->ap_assoc_sta_count--;
2681 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2682 }
2683 ret = 0;
2684 } else if (old_state == IEEE80211_STA_AUTH &&
2685 new_state == IEEE80211_STA_NONE) {
2686 ret = 0;
2687 } else if (old_state == IEEE80211_STA_NONE &&
2688 new_state == IEEE80211_STA_NOTEXIST) {
2689 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2690 if (sta->tdls) {
2691 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2692 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2693 NL80211_TDLS_DISABLE_LINK);
2694 }
2695 } else {
2696 ret = -EIO;
2697 }
2698 out_unlock:
2699 mutex_unlock(&mvm->mutex);
2700
2701 if (sta->tdls && ret == 0) {
2702 if (old_state == IEEE80211_STA_NOTEXIST &&
2703 new_state == IEEE80211_STA_NONE)
2704 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2705 else if (old_state == IEEE80211_STA_NONE &&
2706 new_state == IEEE80211_STA_NOTEXIST)
2707 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2708 }
2709
2710 return ret;
2711 }
2712
2713 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2714 {
2715 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2716
2717 mvm->rts_threshold = value;
2718
2719 return 0;
2720 }
2721
2722 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2723 struct ieee80211_vif *vif,
2724 struct ieee80211_sta *sta, u32 changed)
2725 {
2726 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2727
2728 if (vif->type == NL80211_IFTYPE_STATION &&
2729 changed & IEEE80211_RC_NSS_CHANGED)
2730 iwl_mvm_sf_update(mvm, vif, false);
2731 }
2732
2733 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2734 struct ieee80211_vif *vif, u16 ac,
2735 const struct ieee80211_tx_queue_params *params)
2736 {
2737 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2738 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2739
2740 mvmvif->queue_params[ac] = *params;
2741
2742 /*
2743 * No need to update right away, we'll get BSS_CHANGED_QOS
2744 * The exception is P2P_DEVICE interface which needs immediate update.
2745 */
2746 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2747 int ret;
2748
2749 mutex_lock(&mvm->mutex);
2750 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2751 mutex_unlock(&mvm->mutex);
2752 return ret;
2753 }
2754 return 0;
2755 }
2756
2757 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2758 struct ieee80211_vif *vif)
2759 {
2760 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2761 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2762 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2763
2764 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2765 return;
2766
2767 /*
2768 * iwl_mvm_protect_session() reads directly from the device
2769 * (the system time), so make sure it is available.
2770 */
2771 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2772 return;
2773
2774 mutex_lock(&mvm->mutex);
2775 /* Try really hard to protect the session and hear a beacon */
2776 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2777 mutex_unlock(&mvm->mutex);
2778
2779 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2780 }
2781
2782 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2783 struct ieee80211_vif *vif,
2784 struct cfg80211_sched_scan_request *req,
2785 struct ieee80211_scan_ies *ies)
2786 {
2787 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2788
2789 int ret;
2790
2791 mutex_lock(&mvm->mutex);
2792
2793 if (!vif->bss_conf.idle) {
2794 ret = -EBUSY;
2795 goto out;
2796 }
2797
2798 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2799
2800 out:
2801 mutex_unlock(&mvm->mutex);
2802 return ret;
2803 }
2804
2805 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2806 struct ieee80211_vif *vif)
2807 {
2808 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2809 int ret;
2810
2811 mutex_lock(&mvm->mutex);
2812
2813 /* Due to a race condition, it's possible that mac80211 asks
2814 * us to stop a sched_scan when it's already stopped. This
2815 * can happen, for instance, if we stopped the scan ourselves,
2816 * called ieee80211_sched_scan_stopped() and the userspace called
2817 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2818 * could run. To handle this, simply return if the scan is
2819 * not running.
2820 */
2821 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2822 mutex_unlock(&mvm->mutex);
2823 return 0;
2824 }
2825
2826 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2827 mutex_unlock(&mvm->mutex);
2828 iwl_mvm_wait_for_async_handlers(mvm);
2829
2830 return ret;
2831 }
2832
2833 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2834 enum set_key_cmd cmd,
2835 struct ieee80211_vif *vif,
2836 struct ieee80211_sta *sta,
2837 struct ieee80211_key_conf *key)
2838 {
2839 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2840 struct iwl_mvm_sta *mvmsta;
2841 struct iwl_mvm_key_pn *ptk_pn;
2842 int keyidx = key->keyidx;
2843 int ret;
2844 u8 key_offset;
2845
2846 if (iwlwifi_mod_params.sw_crypto) {
2847 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2848 return -EOPNOTSUPP;
2849 }
2850
2851 switch (key->cipher) {
2852 case WLAN_CIPHER_SUITE_TKIP:
2853 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2854 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2855 break;
2856 case WLAN_CIPHER_SUITE_CCMP:
2857 case WLAN_CIPHER_SUITE_GCMP:
2858 case WLAN_CIPHER_SUITE_GCMP_256:
2859 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2860 break;
2861 case WLAN_CIPHER_SUITE_AES_CMAC:
2862 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2863 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2864 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2865 break;
2866 case WLAN_CIPHER_SUITE_WEP40:
2867 case WLAN_CIPHER_SUITE_WEP104:
2868 /* For non-client mode, only use WEP keys for TX as we probably
2869 * don't have a station yet anyway and would then have to keep
2870 * track of the keys, linking them to each of the clients/peers
2871 * as they appear. For now, don't do that, for performance WEP
2872 * offload doesn't really matter much, but we need it for some
2873 * other offload features in client mode.
2874 */
2875 if (vif->type != NL80211_IFTYPE_STATION)
2876 return 0;
2877 break;
2878 default:
2879 /* currently FW supports only one optional cipher scheme */
2880 if (hw->n_cipher_schemes &&
2881 hw->cipher_schemes->cipher == key->cipher)
2882 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2883 else
2884 return -EOPNOTSUPP;
2885 }
2886
2887 mutex_lock(&mvm->mutex);
2888
2889 switch (cmd) {
2890 case SET_KEY:
2891 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2892 vif->type == NL80211_IFTYPE_AP) && !sta) {
2893 /*
2894 * GTK on AP interface is a TX-only key, return 0;
2895 * on IBSS they're per-station and because we're lazy
2896 * we don't support them for RX, so do the same.
2897 * CMAC/GMAC in AP/IBSS modes must be done in software.
2898 */
2899 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2900 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2901 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2902 ret = -EOPNOTSUPP;
2903 else
2904 ret = 0;
2905 key->hw_key_idx = STA_KEY_IDX_INVALID;
2906 break;
2907 }
2908
2909 /* During FW restart, in order to restore the state as it was,
2910 * don't try to reprogram keys we previously failed for.
2911 */
2912 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2913 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2914 IWL_DEBUG_MAC80211(mvm,
2915 "skip invalid idx key programming during restart\n");
2916 ret = 0;
2917 break;
2918 }
2919
2920 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2921 sta && iwl_mvm_has_new_rx_api(mvm) &&
2922 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2923 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2924 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2925 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2926 struct ieee80211_key_seq seq;
2927 int tid, q;
2928
2929 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2930 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2931 ptk_pn = kzalloc(sizeof(*ptk_pn) +
2932 mvm->trans->num_rx_queues *
2933 sizeof(ptk_pn->q[0]),
2934 GFP_KERNEL);
2935 if (!ptk_pn) {
2936 ret = -ENOMEM;
2937 break;
2938 }
2939
2940 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2941 ieee80211_get_key_rx_seq(key, tid, &seq);
2942 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2943 memcpy(ptk_pn->q[q].pn[tid],
2944 seq.ccmp.pn,
2945 IEEE80211_CCMP_PN_LEN);
2946 }
2947
2948 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2949 }
2950
2951 /* in HW restart reuse the index, otherwise request a new one */
2952 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2953 key_offset = key->hw_key_idx;
2954 else
2955 key_offset = STA_KEY_IDX_INVALID;
2956
2957 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2958 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2959 if (ret) {
2960 IWL_WARN(mvm, "set key failed\n");
2961 /*
2962 * can't add key for RX, but we don't need it
2963 * in the device for TX so still return 0
2964 */
2965 key->hw_key_idx = STA_KEY_IDX_INVALID;
2966 ret = 0;
2967 }
2968
2969 break;
2970 case DISABLE_KEY:
2971 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2972 ret = 0;
2973 break;
2974 }
2975
2976 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2977 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2978 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2979 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2980 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2981 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2982 ptk_pn = rcu_dereference_protected(
2983 mvmsta->ptk_pn[keyidx],
2984 lockdep_is_held(&mvm->mutex));
2985 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2986 if (ptk_pn)
2987 kfree_rcu(ptk_pn, rcu_head);
2988 }
2989
2990 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2991 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2992 break;
2993 default:
2994 ret = -EINVAL;
2995 }
2996
2997 mutex_unlock(&mvm->mutex);
2998 return ret;
2999 }
3000
3001 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3002 struct ieee80211_vif *vif,
3003 struct ieee80211_key_conf *keyconf,
3004 struct ieee80211_sta *sta,
3005 u32 iv32, u16 *phase1key)
3006 {
3007 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3008
3009 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3010 return;
3011
3012 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3013 }
3014
3015
3016 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3017 struct iwl_rx_packet *pkt, void *data)
3018 {
3019 struct iwl_mvm *mvm =
3020 container_of(notif_wait, struct iwl_mvm, notif_wait);
3021 struct iwl_hs20_roc_res *resp;
3022 int resp_len = iwl_rx_packet_payload_len(pkt);
3023 struct iwl_mvm_time_event_data *te_data = data;
3024
3025 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3026 return true;
3027
3028 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3029 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3030 return true;
3031 }
3032
3033 resp = (void *)pkt->data;
3034
3035 IWL_DEBUG_TE(mvm,
3036 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3037 resp->status, resp->event_unique_id);
3038
3039 te_data->uid = le32_to_cpu(resp->event_unique_id);
3040 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3041 te_data->uid);
3042
3043 spin_lock_bh(&mvm->time_event_lock);
3044 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3045 spin_unlock_bh(&mvm->time_event_lock);
3046
3047 return true;
3048 }
3049
3050 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3051 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3052 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3053 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3054 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3055 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3056 struct ieee80211_channel *channel,
3057 struct ieee80211_vif *vif,
3058 int duration)
3059 {
3060 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3061 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3062 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3063 static const u16 time_event_response[] = { HOT_SPOT_CMD };
3064 struct iwl_notification_wait wait_time_event;
3065 u32 dtim_interval = vif->bss_conf.dtim_period *
3066 vif->bss_conf.beacon_int;
3067 u32 req_dur, delay;
3068 struct iwl_hs20_roc_req aux_roc_req = {
3069 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3070 .id_and_color =
3071 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3072 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3073 /* Set the channel info data */
3074 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3075 PHY_BAND_24 : PHY_BAND_5,
3076 .channel_info.channel = channel->hw_value,
3077 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3078 /* Set the time and duration */
3079 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3080 };
3081
3082 delay = AUX_ROC_MIN_DELAY;
3083 req_dur = MSEC_TO_TU(duration);
3084
3085 /*
3086 * If we are associated we want the delay time to be at least one
3087 * dtim interval so that the FW can wait until after the DTIM and
3088 * then start the time event, this will potentially allow us to
3089 * remain off-channel for the max duration.
3090 * Since we want to use almost a whole dtim interval we would also
3091 * like the delay to be for 2-3 dtim intervals, in case there are
3092 * other time events with higher priority.
3093 */
3094 if (vif->bss_conf.assoc) {
3095 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3096 /* We cannot remain off-channel longer than the DTIM interval */
3097 if (dtim_interval <= req_dur) {
3098 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3099 if (req_dur <= AUX_ROC_MIN_DURATION)
3100 req_dur = dtim_interval -
3101 AUX_ROC_MIN_SAFETY_BUFFER;
3102 }
3103 }
3104
3105 aux_roc_req.duration = cpu_to_le32(req_dur);
3106 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3107
3108 IWL_DEBUG_TE(mvm,
3109 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3110 channel->hw_value, req_dur, duration, delay,
3111 dtim_interval);
3112 /* Set the node address */
3113 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3114
3115 lockdep_assert_held(&mvm->mutex);
3116
3117 spin_lock_bh(&mvm->time_event_lock);
3118
3119 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3120 spin_unlock_bh(&mvm->time_event_lock);
3121 return -EIO;
3122 }
3123
3124 te_data->vif = vif;
3125 te_data->duration = duration;
3126 te_data->id = HOT_SPOT_CMD;
3127
3128 spin_unlock_bh(&mvm->time_event_lock);
3129
3130 /*
3131 * Use a notification wait, which really just processes the
3132 * command response and doesn't wait for anything, in order
3133 * to be able to process the response and get the UID inside
3134 * the RX path. Using CMD_WANT_SKB doesn't work because it
3135 * stores the buffer and then wakes up this thread, by which
3136 * time another notification (that the time event started)
3137 * might already be processed unsuccessfully.
3138 */
3139 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3140 time_event_response,
3141 ARRAY_SIZE(time_event_response),
3142 iwl_mvm_rx_aux_roc, te_data);
3143
3144 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3145 &aux_roc_req);
3146
3147 if (res) {
3148 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3149 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3150 goto out_clear_te;
3151 }
3152
3153 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3154 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3155 /* should never fail */
3156 WARN_ON_ONCE(res);
3157
3158 if (res) {
3159 out_clear_te:
3160 spin_lock_bh(&mvm->time_event_lock);
3161 iwl_mvm_te_clear_data(mvm, te_data);
3162 spin_unlock_bh(&mvm->time_event_lock);
3163 }
3164
3165 return res;
3166 }
3167
3168 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3169 struct ieee80211_vif *vif,
3170 struct ieee80211_channel *channel,
3171 int duration,
3172 enum ieee80211_roc_type type)
3173 {
3174 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3175 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3176 struct cfg80211_chan_def chandef;
3177 struct iwl_mvm_phy_ctxt *phy_ctxt;
3178 int ret, i;
3179
3180 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3181 duration, type);
3182
3183 flush_work(&mvm->roc_done_wk);
3184
3185 mutex_lock(&mvm->mutex);
3186
3187 switch (vif->type) {
3188 case NL80211_IFTYPE_STATION:
3189 if (fw_has_capa(&mvm->fw->ucode_capa,
3190 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3191 /* Use aux roc framework (HS20) */
3192 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3193 vif, duration);
3194 goto out_unlock;
3195 }
3196 IWL_ERR(mvm, "hotspot not supported\n");
3197 ret = -EINVAL;
3198 goto out_unlock;
3199 case NL80211_IFTYPE_P2P_DEVICE:
3200 /* handle below */
3201 break;
3202 default:
3203 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3204 ret = -EINVAL;
3205 goto out_unlock;
3206 }
3207
3208 for (i = 0; i < NUM_PHY_CTX; i++) {
3209 phy_ctxt = &mvm->phy_ctxts[i];
3210 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3211 continue;
3212
3213 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3214 /*
3215 * Unbind the P2P_DEVICE from the current PHY context,
3216 * and if the PHY context is not used remove it.
3217 */
3218 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3219 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3220 goto out_unlock;
3221
3222 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3223
3224 /* Bind the P2P_DEVICE to the current PHY Context */
3225 mvmvif->phy_ctxt = phy_ctxt;
3226
3227 ret = iwl_mvm_binding_add_vif(mvm, vif);
3228 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3229 goto out_unlock;
3230
3231 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3232 goto schedule_time_event;
3233 }
3234 }
3235
3236 /* Need to update the PHY context only if the ROC channel changed */
3237 if (channel == mvmvif->phy_ctxt->channel)
3238 goto schedule_time_event;
3239
3240 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3241
3242 /*
3243 * Change the PHY context configuration as it is currently referenced
3244 * only by the P2P Device MAC
3245 */
3246 if (mvmvif->phy_ctxt->ref == 1) {
3247 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3248 &chandef, 1, 1);
3249 if (ret)
3250 goto out_unlock;
3251 } else {
3252 /*
3253 * The PHY context is shared with other MACs. Need to remove the
3254 * P2P Device from the binding, allocate an new PHY context and
3255 * create a new binding
3256 */
3257 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3258 if (!phy_ctxt) {
3259 ret = -ENOSPC;
3260 goto out_unlock;
3261 }
3262
3263 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3264 1, 1);
3265 if (ret) {
3266 IWL_ERR(mvm, "Failed to change PHY context\n");
3267 goto out_unlock;
3268 }
3269
3270 /* Unbind the P2P_DEVICE from the current PHY context */
3271 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3272 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3273 goto out_unlock;
3274
3275 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3276
3277 /* Bind the P2P_DEVICE to the new allocated PHY context */
3278 mvmvif->phy_ctxt = phy_ctxt;
3279
3280 ret = iwl_mvm_binding_add_vif(mvm, vif);
3281 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3282 goto out_unlock;
3283
3284 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3285 }
3286
3287 schedule_time_event:
3288 /* Schedule the time events */
3289 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3290
3291 out_unlock:
3292 mutex_unlock(&mvm->mutex);
3293 IWL_DEBUG_MAC80211(mvm, "leave\n");
3294 return ret;
3295 }
3296
3297 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3298 {
3299 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3300
3301 IWL_DEBUG_MAC80211(mvm, "enter\n");
3302
3303 mutex_lock(&mvm->mutex);
3304 iwl_mvm_stop_roc(mvm);
3305 mutex_unlock(&mvm->mutex);
3306
3307 IWL_DEBUG_MAC80211(mvm, "leave\n");
3308 return 0;
3309 }
3310
3311 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3312 struct ieee80211_chanctx_conf *ctx)
3313 {
3314 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3315 struct iwl_mvm_phy_ctxt *phy_ctxt;
3316 int ret;
3317
3318 lockdep_assert_held(&mvm->mutex);
3319
3320 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3321
3322 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3323 if (!phy_ctxt) {
3324 ret = -ENOSPC;
3325 goto out;
3326 }
3327
3328 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3329 ctx->rx_chains_static,
3330 ctx->rx_chains_dynamic);
3331 if (ret) {
3332 IWL_ERR(mvm, "Failed to add PHY context\n");
3333 goto out;
3334 }
3335
3336 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3337 *phy_ctxt_id = phy_ctxt->id;
3338 out:
3339 return ret;
3340 }
3341
3342 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3343 struct ieee80211_chanctx_conf *ctx)
3344 {
3345 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3346 int ret;
3347
3348 mutex_lock(&mvm->mutex);
3349 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3350 mutex_unlock(&mvm->mutex);
3351
3352 return ret;
3353 }
3354
3355 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3356 struct ieee80211_chanctx_conf *ctx)
3357 {
3358 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3359 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3360
3361 lockdep_assert_held(&mvm->mutex);
3362
3363 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3364 }
3365
3366 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3367 struct ieee80211_chanctx_conf *ctx)
3368 {
3369 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3370
3371 mutex_lock(&mvm->mutex);
3372 __iwl_mvm_remove_chanctx(mvm, ctx);
3373 mutex_unlock(&mvm->mutex);
3374 }
3375
3376 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3377 struct ieee80211_chanctx_conf *ctx,
3378 u32 changed)
3379 {
3380 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3381 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3382 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3383
3384 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3385 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3386 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3387 IEEE80211_CHANCTX_CHANGE_RADAR |
3388 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3389 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3390 phy_ctxt->ref, changed))
3391 return;
3392
3393 mutex_lock(&mvm->mutex);
3394 iwl_mvm_bt_coex_vif_change(mvm);
3395 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3396 ctx->rx_chains_static,
3397 ctx->rx_chains_dynamic);
3398 mutex_unlock(&mvm->mutex);
3399 }
3400
3401 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3402 struct ieee80211_vif *vif,
3403 struct ieee80211_chanctx_conf *ctx,
3404 bool switching_chanctx)
3405 {
3406 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3407 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3408 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3409 int ret;
3410
3411 lockdep_assert_held(&mvm->mutex);
3412
3413 mvmvif->phy_ctxt = phy_ctxt;
3414
3415 switch (vif->type) {
3416 case NL80211_IFTYPE_AP:
3417 /* only needed if we're switching chanctx (i.e. during CSA) */
3418 if (switching_chanctx) {
3419 mvmvif->ap_ibss_active = true;
3420 break;
3421 }
3422 case NL80211_IFTYPE_ADHOC:
3423 /*
3424 * The AP binding flow is handled as part of the start_ap flow
3425 * (in bss_info_changed), similarly for IBSS.
3426 */
3427 ret = 0;
3428 goto out;
3429 case NL80211_IFTYPE_STATION:
3430 break;
3431 case NL80211_IFTYPE_MONITOR:
3432 /* always disable PS when a monitor interface is active */
3433 mvmvif->ps_disabled = true;
3434 break;
3435 default:
3436 ret = -EINVAL;
3437 goto out;
3438 }
3439
3440 ret = iwl_mvm_binding_add_vif(mvm, vif);
3441 if (ret)
3442 goto out;
3443
3444 /*
3445 * Power state must be updated before quotas,
3446 * otherwise fw will complain.
3447 */
3448 iwl_mvm_power_update_mac(mvm);
3449
3450 /* Setting the quota at this stage is only required for monitor
3451 * interfaces. For the other types, the bss_info changed flow
3452 * will handle quota settings.
3453 */
3454 if (vif->type == NL80211_IFTYPE_MONITOR) {
3455 mvmvif->monitor_active = true;
3456 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3457 if (ret)
3458 goto out_remove_binding;
3459
3460 ret = iwl_mvm_add_snif_sta(mvm, vif);
3461 if (ret)
3462 goto out_remove_binding;
3463
3464 }
3465
3466 /* Handle binding during CSA */
3467 if (vif->type == NL80211_IFTYPE_AP) {
3468 iwl_mvm_update_quotas(mvm, false, NULL);
3469 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3470 }
3471
3472 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3473 u32 duration = 2 * vif->bss_conf.beacon_int;
3474
3475 /* iwl_mvm_protect_session() reads directly from the
3476 * device (the system time), so make sure it is
3477 * available.
3478 */
3479 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3480 if (ret)
3481 goto out_remove_binding;
3482
3483 /* Protect the session to make sure we hear the first
3484 * beacon on the new channel.
3485 */
3486 iwl_mvm_protect_session(mvm, vif, duration, duration,
3487 vif->bss_conf.beacon_int / 2,
3488 true);
3489
3490 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3491
3492 iwl_mvm_update_quotas(mvm, false, NULL);
3493 }
3494
3495 goto out;
3496
3497 out_remove_binding:
3498 iwl_mvm_binding_remove_vif(mvm, vif);
3499 iwl_mvm_power_update_mac(mvm);
3500 out:
3501 if (ret)
3502 mvmvif->phy_ctxt = NULL;
3503 return ret;
3504 }
3505 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3506 struct ieee80211_vif *vif,
3507 struct ieee80211_chanctx_conf *ctx)
3508 {
3509 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3510 int ret;
3511
3512 mutex_lock(&mvm->mutex);
3513 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3514 mutex_unlock(&mvm->mutex);
3515
3516 return ret;
3517 }
3518
3519 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3520 struct ieee80211_vif *vif,
3521 struct ieee80211_chanctx_conf *ctx,
3522 bool switching_chanctx)
3523 {
3524 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3525 struct ieee80211_vif *disabled_vif = NULL;
3526
3527 lockdep_assert_held(&mvm->mutex);
3528
3529 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3530
3531 switch (vif->type) {
3532 case NL80211_IFTYPE_ADHOC:
3533 goto out;
3534 case NL80211_IFTYPE_MONITOR:
3535 mvmvif->monitor_active = false;
3536 mvmvif->ps_disabled = false;
3537 iwl_mvm_rm_snif_sta(mvm, vif);
3538 break;
3539 case NL80211_IFTYPE_AP:
3540 /* This part is triggered only during CSA */
3541 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3542 goto out;
3543
3544 mvmvif->csa_countdown = false;
3545
3546 /* Set CS bit on all the stations */
3547 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3548
3549 /* Save blocked iface, the timeout is set on the next beacon */
3550 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3551
3552 mvmvif->ap_ibss_active = false;
3553 break;
3554 case NL80211_IFTYPE_STATION:
3555 if (!switching_chanctx)
3556 break;
3557
3558 disabled_vif = vif;
3559
3560 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3561 break;
3562 default:
3563 break;
3564 }
3565
3566 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3567 iwl_mvm_binding_remove_vif(mvm, vif);
3568
3569 out:
3570 mvmvif->phy_ctxt = NULL;
3571 iwl_mvm_power_update_mac(mvm);
3572 }
3573
3574 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3575 struct ieee80211_vif *vif,
3576 struct ieee80211_chanctx_conf *ctx)
3577 {
3578 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3579
3580 mutex_lock(&mvm->mutex);
3581 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3582 mutex_unlock(&mvm->mutex);
3583 }
3584
3585 static int
3586 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3587 struct ieee80211_vif_chanctx_switch *vifs)
3588 {
3589 int ret;
3590
3591 mutex_lock(&mvm->mutex);
3592 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3593 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3594
3595 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3596 if (ret) {
3597 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3598 goto out_reassign;
3599 }
3600
3601 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3602 true);
3603 if (ret) {
3604 IWL_ERR(mvm,
3605 "failed to assign new_ctx during channel switch\n");
3606 goto out_remove;
3607 }
3608
3609 /* we don't support TDLS during DCM - can be caused by channel switch */
3610 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3611 iwl_mvm_teardown_tdls_peers(mvm);
3612
3613 goto out;
3614
3615 out_remove:
3616 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3617
3618 out_reassign:
3619 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3620 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3621 goto out_restart;
3622 }
3623
3624 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3625 true)) {
3626 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3627 goto out_restart;
3628 }
3629
3630 goto out;
3631
3632 out_restart:
3633 /* things keep failing, better restart the hw */
3634 iwl_mvm_nic_restart(mvm, false);
3635
3636 out:
3637 mutex_unlock(&mvm->mutex);
3638
3639 return ret;
3640 }
3641
3642 static int
3643 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3644 struct ieee80211_vif_chanctx_switch *vifs)
3645 {
3646 int ret;
3647
3648 mutex_lock(&mvm->mutex);
3649 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3650
3651 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3652 true);
3653 if (ret) {
3654 IWL_ERR(mvm,
3655 "failed to assign new_ctx during channel switch\n");
3656 goto out_reassign;
3657 }
3658
3659 goto out;
3660
3661 out_reassign:
3662 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3663 true)) {
3664 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3665 goto out_restart;
3666 }
3667
3668 goto out;
3669
3670 out_restart:
3671 /* things keep failing, better restart the hw */
3672 iwl_mvm_nic_restart(mvm, false);
3673
3674 out:
3675 mutex_unlock(&mvm->mutex);
3676
3677 return ret;
3678 }
3679
3680 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3681 struct ieee80211_vif_chanctx_switch *vifs,
3682 int n_vifs,
3683 enum ieee80211_chanctx_switch_mode mode)
3684 {
3685 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3686 int ret;
3687
3688 /* we only support a single-vif right now */
3689 if (n_vifs > 1)
3690 return -EOPNOTSUPP;
3691
3692 switch (mode) {
3693 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3694 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3695 break;
3696 case CHANCTX_SWMODE_REASSIGN_VIF:
3697 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3698 break;
3699 default:
3700 ret = -EOPNOTSUPP;
3701 break;
3702 }
3703
3704 return ret;
3705 }
3706
3707 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3708 struct ieee80211_sta *sta,
3709 bool set)
3710 {
3711 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3712 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3713
3714 if (!mvm_sta || !mvm_sta->vif) {
3715 IWL_ERR(mvm, "Station is not associated to a vif\n");
3716 return -EINVAL;
3717 }
3718
3719 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3720 }
3721
3722 #ifdef CONFIG_NL80211_TESTMODE
3723 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3724 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3725 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3726 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3727 };
3728
3729 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3730 struct ieee80211_vif *vif,
3731 void *data, int len)
3732 {
3733 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3734 int err;
3735 u32 noa_duration;
3736
3737 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
3738 NULL);
3739 if (err)
3740 return err;
3741
3742 if (!tb[IWL_MVM_TM_ATTR_CMD])
3743 return -EINVAL;
3744
3745 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3746 case IWL_MVM_TM_CMD_SET_NOA:
3747 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3748 !vif->bss_conf.enable_beacon ||
3749 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3750 return -EINVAL;
3751
3752 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3753 if (noa_duration >= vif->bss_conf.beacon_int)
3754 return -EINVAL;
3755
3756 mvm->noa_duration = noa_duration;
3757 mvm->noa_vif = vif;
3758
3759 return iwl_mvm_update_quotas(mvm, false, NULL);
3760 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3761 /* must be associated client vif - ignore authorized */
3762 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3763 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3764 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3765 return -EINVAL;
3766
3767 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3768 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3769 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3770 }
3771
3772 return -EOPNOTSUPP;
3773 }
3774
3775 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3776 struct ieee80211_vif *vif,
3777 void *data, int len)
3778 {
3779 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3780 int err;
3781
3782 mutex_lock(&mvm->mutex);
3783 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3784 mutex_unlock(&mvm->mutex);
3785
3786 return err;
3787 }
3788 #endif
3789
3790 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3791 struct ieee80211_vif *vif,
3792 struct ieee80211_channel_switch *chsw)
3793 {
3794 /* By implementing this operation, we prevent mac80211 from
3795 * starting its own channel switch timer, so that we can call
3796 * ieee80211_chswitch_done() ourselves at the right time
3797 * (which is when the absence time event starts).
3798 */
3799
3800 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3801 "dummy channel switch op\n");
3802 }
3803
3804 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3805 struct ieee80211_vif *vif,
3806 struct ieee80211_channel_switch *chsw)
3807 {
3808 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3809 struct ieee80211_vif *csa_vif;
3810 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3811 u32 apply_time;
3812 int ret;
3813
3814 mutex_lock(&mvm->mutex);
3815
3816 mvmvif->csa_failed = false;
3817
3818 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3819 chsw->chandef.center_freq1);
3820
3821 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3822
3823 switch (vif->type) {
3824 case NL80211_IFTYPE_AP:
3825 csa_vif =
3826 rcu_dereference_protected(mvm->csa_vif,
3827 lockdep_is_held(&mvm->mutex));
3828 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3829 "Another CSA is already in progress")) {
3830 ret = -EBUSY;
3831 goto out_unlock;
3832 }
3833
3834 /* we still didn't unblock tx. prevent new CS meanwhile */
3835 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
3836 lockdep_is_held(&mvm->mutex))) {
3837 ret = -EBUSY;
3838 goto out_unlock;
3839 }
3840
3841 rcu_assign_pointer(mvm->csa_vif, vif);
3842
3843 if (WARN_ONCE(mvmvif->csa_countdown,
3844 "Previous CSA countdown didn't complete")) {
3845 ret = -EBUSY;
3846 goto out_unlock;
3847 }
3848
3849 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
3850
3851 break;
3852 case NL80211_IFTYPE_STATION:
3853 if (mvmvif->lqm_active)
3854 iwl_mvm_send_lqm_cmd(vif,
3855 LQM_CMD_OPERATION_STOP_MEASUREMENT,
3856 0, 0);
3857
3858 /* Schedule the time event to a bit before beacon 1,
3859 * to make sure we're in the new channel when the
3860 * GO/AP arrives.
3861 */
3862 apply_time = chsw->device_timestamp +
3863 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3864 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3865
3866 if (chsw->block_tx)
3867 iwl_mvm_csa_client_absent(mvm, vif);
3868
3869 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3870 apply_time);
3871 if (mvmvif->bf_data.bf_enabled) {
3872 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3873 if (ret)
3874 goto out_unlock;
3875 }
3876
3877 break;
3878 default:
3879 break;
3880 }
3881
3882 mvmvif->ps_disabled = true;
3883
3884 ret = iwl_mvm_power_update_ps(mvm);
3885 if (ret)
3886 goto out_unlock;
3887
3888 /* we won't be on this channel any longer */
3889 iwl_mvm_teardown_tdls_peers(mvm);
3890
3891 out_unlock:
3892 mutex_unlock(&mvm->mutex);
3893
3894 return ret;
3895 }
3896
3897 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3898 struct ieee80211_vif *vif)
3899 {
3900 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3901 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3902 int ret;
3903
3904 mutex_lock(&mvm->mutex);
3905
3906 if (mvmvif->csa_failed) {
3907 mvmvif->csa_failed = false;
3908 ret = -EIO;
3909 goto out_unlock;
3910 }
3911
3912 if (vif->type == NL80211_IFTYPE_STATION) {
3913 struct iwl_mvm_sta *mvmsta;
3914
3915 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3916 mvmvif->ap_sta_id);
3917
3918 if (WARN_ON(!mvmsta)) {
3919 ret = -EIO;
3920 goto out_unlock;
3921 }
3922
3923 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3924
3925 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3926
3927 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3928 if (ret)
3929 goto out_unlock;
3930
3931 iwl_mvm_stop_session_protection(mvm, vif);
3932 }
3933
3934 mvmvif->ps_disabled = false;
3935
3936 ret = iwl_mvm_power_update_ps(mvm);
3937
3938 out_unlock:
3939 mutex_unlock(&mvm->mutex);
3940
3941 return ret;
3942 }
3943
3944 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3945 struct ieee80211_vif *vif, u32 queues, bool drop)
3946 {
3947 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3948 struct iwl_mvm_vif *mvmvif;
3949 struct iwl_mvm_sta *mvmsta;
3950 struct ieee80211_sta *sta;
3951 int i;
3952 u32 msk = 0;
3953
3954 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3955 return;
3956
3957 /* Make sure we're done with the deferred traffic before flushing */
3958 if (iwl_mvm_is_dqa_supported(mvm))
3959 flush_work(&mvm->add_stream_wk);
3960
3961 mutex_lock(&mvm->mutex);
3962 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3963
3964 /* flush the AP-station and all TDLS peers */
3965 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
3966 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3967 lockdep_is_held(&mvm->mutex));
3968 if (IS_ERR_OR_NULL(sta))
3969 continue;
3970
3971 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3972 if (mvmsta->vif != vif)
3973 continue;
3974
3975 /* make sure only TDLS peers or the AP are flushed */
3976 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3977
3978 msk |= mvmsta->tfd_queue_msk;
3979 }
3980
3981 if (drop) {
3982 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3983 IWL_ERR(mvm, "flush request fail\n");
3984 mutex_unlock(&mvm->mutex);
3985 } else {
3986 mutex_unlock(&mvm->mutex);
3987
3988 /* this can take a while, and we may need/want other operations
3989 * to succeed while doing this, so do it without the mutex held
3990 */
3991 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3992 }
3993 }
3994
3995 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3996 struct survey_info *survey)
3997 {
3998 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3999 int ret;
4000
4001 memset(survey, 0, sizeof(*survey));
4002
4003 /* only support global statistics right now */
4004 if (idx != 0)
4005 return -ENOENT;
4006
4007 if (!fw_has_capa(&mvm->fw->ucode_capa,
4008 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4009 return -ENOENT;
4010
4011 mutex_lock(&mvm->mutex);
4012
4013 if (mvm->ucode_loaded) {
4014 ret = iwl_mvm_request_statistics(mvm, false);
4015 if (ret)
4016 goto out;
4017 }
4018
4019 survey->filled = SURVEY_INFO_TIME |
4020 SURVEY_INFO_TIME_RX |
4021 SURVEY_INFO_TIME_TX |
4022 SURVEY_INFO_TIME_SCAN;
4023 survey->time = mvm->accu_radio_stats.on_time_rf +
4024 mvm->radio_stats.on_time_rf;
4025 do_div(survey->time, USEC_PER_MSEC);
4026
4027 survey->time_rx = mvm->accu_radio_stats.rx_time +
4028 mvm->radio_stats.rx_time;
4029 do_div(survey->time_rx, USEC_PER_MSEC);
4030
4031 survey->time_tx = mvm->accu_radio_stats.tx_time +
4032 mvm->radio_stats.tx_time;
4033 do_div(survey->time_tx, USEC_PER_MSEC);
4034
4035 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4036 mvm->radio_stats.on_time_scan;
4037 do_div(survey->time_scan, USEC_PER_MSEC);
4038
4039 ret = 0;
4040 out:
4041 mutex_unlock(&mvm->mutex);
4042 return ret;
4043 }
4044
4045 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4046 struct ieee80211_vif *vif,
4047 struct ieee80211_sta *sta,
4048 struct station_info *sinfo)
4049 {
4050 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4051 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4052 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4053
4054 if (mvmsta->avg_energy) {
4055 sinfo->signal_avg = mvmsta->avg_energy;
4056 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
4057 }
4058
4059 if (!fw_has_capa(&mvm->fw->ucode_capa,
4060 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4061 return;
4062
4063 /* if beacon filtering isn't on mac80211 does it anyway */
4064 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4065 return;
4066
4067 if (!vif->bss_conf.assoc)
4068 return;
4069
4070 mutex_lock(&mvm->mutex);
4071
4072 if (mvmvif->ap_sta_id != mvmsta->sta_id)
4073 goto unlock;
4074
4075 if (iwl_mvm_request_statistics(mvm, false))
4076 goto unlock;
4077
4078 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4079 mvmvif->beacon_stats.accu_num_beacons;
4080 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
4081 if (mvmvif->beacon_stats.avg_signal) {
4082 /* firmware only reports a value after RXing a few beacons */
4083 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4084 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4085 }
4086 unlock:
4087 mutex_unlock(&mvm->mutex);
4088 }
4089
4090 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4091 struct ieee80211_vif *vif,
4092 const struct ieee80211_event *event)
4093 {
4094 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
4095 do { \
4096 if ((_cnt) && --(_cnt)) \
4097 break; \
4098 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
4099 } while (0)
4100
4101 struct iwl_fw_dbg_trigger_tlv *trig;
4102 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4103
4104 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4105 return;
4106
4107 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4108 trig_mlme = (void *)trig->data;
4109 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4110 return;
4111
4112 if (event->u.mlme.data == ASSOC_EVENT) {
4113 if (event->u.mlme.status == MLME_DENIED)
4114 CHECK_MLME_TRIGGER(mvm, trig, buf,
4115 trig_mlme->stop_assoc_denied,
4116 "DENIED ASSOC: reason %d",
4117 event->u.mlme.reason);
4118 else if (event->u.mlme.status == MLME_TIMEOUT)
4119 CHECK_MLME_TRIGGER(mvm, trig, buf,
4120 trig_mlme->stop_assoc_timeout,
4121 "ASSOC TIMEOUT");
4122 } else if (event->u.mlme.data == AUTH_EVENT) {
4123 if (event->u.mlme.status == MLME_DENIED)
4124 CHECK_MLME_TRIGGER(mvm, trig, buf,
4125 trig_mlme->stop_auth_denied,
4126 "DENIED AUTH: reason %d",
4127 event->u.mlme.reason);
4128 else if (event->u.mlme.status == MLME_TIMEOUT)
4129 CHECK_MLME_TRIGGER(mvm, trig, buf,
4130 trig_mlme->stop_auth_timeout,
4131 "AUTH TIMEOUT");
4132 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4133 CHECK_MLME_TRIGGER(mvm, trig, buf,
4134 trig_mlme->stop_rx_deauth,
4135 "DEAUTH RX %d", event->u.mlme.reason);
4136 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4137 CHECK_MLME_TRIGGER(mvm, trig, buf,
4138 trig_mlme->stop_tx_deauth,
4139 "DEAUTH TX %d", event->u.mlme.reason);
4140 }
4141 #undef CHECK_MLME_TRIGGER
4142 }
4143
4144 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4145 struct ieee80211_vif *vif,
4146 const struct ieee80211_event *event)
4147 {
4148 struct iwl_fw_dbg_trigger_tlv *trig;
4149 struct iwl_fw_dbg_trigger_ba *ba_trig;
4150
4151 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4152 return;
4153
4154 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4155 ba_trig = (void *)trig->data;
4156 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4157 return;
4158
4159 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4160 return;
4161
4162 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4163 "BAR received from %pM, tid %d, ssn %d",
4164 event->u.ba.sta->addr, event->u.ba.tid,
4165 event->u.ba.ssn);
4166 }
4167
4168 static void
4169 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4170 struct ieee80211_vif *vif,
4171 const struct ieee80211_event *event)
4172 {
4173 struct iwl_fw_dbg_trigger_tlv *trig;
4174 struct iwl_fw_dbg_trigger_ba *ba_trig;
4175
4176 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4177 return;
4178
4179 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4180 ba_trig = (void *)trig->data;
4181 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4182 return;
4183
4184 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4185 return;
4186
4187 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4188 "Frame from %pM timed out, tid %d",
4189 event->u.ba.sta->addr, event->u.ba.tid);
4190 }
4191
4192 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4193 struct ieee80211_vif *vif,
4194 const struct ieee80211_event *event)
4195 {
4196 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4197
4198 switch (event->type) {
4199 case MLME_EVENT:
4200 iwl_mvm_event_mlme_callback(mvm, vif, event);
4201 break;
4202 case BAR_RX_EVENT:
4203 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4204 break;
4205 case BA_FRAME_TIMEOUT:
4206 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4207 break;
4208 default:
4209 break;
4210 }
4211 }
4212
4213 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4214 struct iwl_mvm_internal_rxq_notif *notif,
4215 u32 size)
4216 {
4217 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4218 int ret;
4219
4220 lockdep_assert_held(&mvm->mutex);
4221
4222 /* TODO - remove a000 disablement when we have RXQ config API */
4223 if (!iwl_mvm_has_new_rx_api(mvm) || iwl_mvm_has_new_tx_api(mvm))
4224 return;
4225
4226 notif->cookie = mvm->queue_sync_cookie;
4227
4228 if (notif->sync)
4229 atomic_set(&mvm->queue_sync_counter,
4230 mvm->trans->num_rx_queues);
4231
4232 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4233 if (ret) {
4234 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4235 goto out;
4236 }
4237
4238 if (notif->sync)
4239 ret = wait_event_timeout(mvm->rx_sync_waitq,
4240 atomic_read(&mvm->queue_sync_counter) == 0,
4241 HZ);
4242 WARN_ON_ONCE(!ret);
4243
4244 out:
4245 atomic_set(&mvm->queue_sync_counter, 0);
4246 mvm->queue_sync_cookie++;
4247 }
4248
4249 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4250 {
4251 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4252 struct iwl_mvm_internal_rxq_notif data = {
4253 .type = IWL_MVM_RXQ_EMPTY,
4254 .sync = 1,
4255 };
4256
4257 mutex_lock(&mvm->mutex);
4258 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4259 mutex_unlock(&mvm->mutex);
4260 }
4261
4262 const struct ieee80211_ops iwl_mvm_hw_ops = {
4263 .tx = iwl_mvm_mac_tx,
4264 .ampdu_action = iwl_mvm_mac_ampdu_action,
4265 .start = iwl_mvm_mac_start,
4266 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4267 .stop = iwl_mvm_mac_stop,
4268 .add_interface = iwl_mvm_mac_add_interface,
4269 .remove_interface = iwl_mvm_mac_remove_interface,
4270 .config = iwl_mvm_mac_config,
4271 .prepare_multicast = iwl_mvm_prepare_multicast,
4272 .configure_filter = iwl_mvm_configure_filter,
4273 .config_iface_filter = iwl_mvm_config_iface_filter,
4274 .bss_info_changed = iwl_mvm_bss_info_changed,
4275 .hw_scan = iwl_mvm_mac_hw_scan,
4276 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4277 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4278 .sta_state = iwl_mvm_mac_sta_state,
4279 .sta_notify = iwl_mvm_mac_sta_notify,
4280 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4281 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4282 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4283 .sta_rc_update = iwl_mvm_sta_rc_update,
4284 .conf_tx = iwl_mvm_mac_conf_tx,
4285 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4286 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4287 .flush = iwl_mvm_mac_flush,
4288 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4289 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4290 .set_key = iwl_mvm_mac_set_key,
4291 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4292 .remain_on_channel = iwl_mvm_roc,
4293 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4294 .add_chanctx = iwl_mvm_add_chanctx,
4295 .remove_chanctx = iwl_mvm_remove_chanctx,
4296 .change_chanctx = iwl_mvm_change_chanctx,
4297 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4298 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4299 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4300
4301 .start_ap = iwl_mvm_start_ap_ibss,
4302 .stop_ap = iwl_mvm_stop_ap_ibss,
4303 .join_ibss = iwl_mvm_start_ap_ibss,
4304 .leave_ibss = iwl_mvm_stop_ap_ibss,
4305
4306 .set_tim = iwl_mvm_set_tim,
4307
4308 .channel_switch = iwl_mvm_channel_switch,
4309 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4310 .post_channel_switch = iwl_mvm_post_channel_switch,
4311
4312 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4313 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4314 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4315
4316 .event_callback = iwl_mvm_mac_event_callback,
4317
4318 .sync_rx_queues = iwl_mvm_sync_rx_queues,
4319
4320 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4321
4322 #ifdef CONFIG_PM_SLEEP
4323 /* look at d3.c */
4324 .suspend = iwl_mvm_suspend,
4325 .resume = iwl_mvm_resume,
4326 .set_wakeup = iwl_mvm_set_wakeup,
4327 .set_rekey_data = iwl_mvm_set_rekey_data,
4328 #if IS_ENABLED(CONFIG_IPV6)
4329 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4330 #endif
4331 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4332 #endif
4333 .get_survey = iwl_mvm_mac_get_survey,
4334 .sta_statistics = iwl_mvm_mac_sta_statistics,
4335 };
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