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Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[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 "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.swcrypto) {
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.swcrypto)
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 mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
739
740 if (mvm->cfg->vht_mu_mimo_supported)
741 wiphy_ext_feature_set(hw->wiphy,
742 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
743
744 return ret;
745 }
746
747 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
748 struct ieee80211_sta *sta,
749 struct sk_buff *skb)
750 {
751 struct iwl_mvm_sta *mvmsta;
752 bool defer = false;
753
754 /*
755 * double check the IN_D0I3 flag both before and after
756 * taking the spinlock, in order to prevent taking
757 * the spinlock when not needed.
758 */
759 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
760 return false;
761
762 spin_lock(&mvm->d0i3_tx_lock);
763 /*
764 * testing the flag again ensures the skb dequeue
765 * loop (on d0i3 exit) hasn't run yet.
766 */
767 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
768 goto out;
769
770 mvmsta = iwl_mvm_sta_from_mac80211(sta);
771 if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
772 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
773 goto out;
774
775 __skb_queue_tail(&mvm->d0i3_tx, skb);
776 ieee80211_stop_queues(mvm->hw);
777
778 /* trigger wakeup */
779 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
780 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
781
782 defer = true;
783 out:
784 spin_unlock(&mvm->d0i3_tx_lock);
785 return defer;
786 }
787
788 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
789 struct ieee80211_tx_control *control,
790 struct sk_buff *skb)
791 {
792 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
793 struct ieee80211_sta *sta = control->sta;
794 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
795 struct ieee80211_hdr *hdr = (void *)skb->data;
796
797 if (iwl_mvm_is_radio_killed(mvm)) {
798 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
799 goto drop;
800 }
801
802 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
803 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
804 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
805 goto drop;
806
807 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
808 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
809 ieee80211_is_mgmt(hdr->frame_control) &&
810 !ieee80211_is_deauth(hdr->frame_control) &&
811 !ieee80211_is_disassoc(hdr->frame_control) &&
812 !ieee80211_is_action(hdr->frame_control)))
813 sta = NULL;
814
815 if (sta) {
816 if (iwl_mvm_defer_tx(mvm, sta, skb))
817 return;
818 if (iwl_mvm_tx_skb(mvm, skb, sta))
819 goto drop;
820 return;
821 }
822
823 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
824 goto drop;
825 return;
826 drop:
827 ieee80211_free_txskb(hw, skb);
828 }
829
830 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
831 {
832 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
833 return false;
834 return true;
835 }
836
837 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
838 {
839 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
840 return false;
841 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
842 return true;
843
844 /* enabled by default */
845 return true;
846 }
847
848 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
849 do { \
850 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
851 break; \
852 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
853 } while (0)
854
855 static void
856 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
857 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
858 enum ieee80211_ampdu_mlme_action action)
859 {
860 struct iwl_fw_dbg_trigger_tlv *trig;
861 struct iwl_fw_dbg_trigger_ba *ba_trig;
862
863 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
864 return;
865
866 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
867 ba_trig = (void *)trig->data;
868
869 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
870 return;
871
872 switch (action) {
873 case IEEE80211_AMPDU_TX_OPERATIONAL: {
874 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
875 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
876
877 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
878 "TX AGG START: MAC %pM tid %d ssn %d\n",
879 sta->addr, tid, tid_data->ssn);
880 break;
881 }
882 case IEEE80211_AMPDU_TX_STOP_CONT:
883 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
884 "TX AGG STOP: MAC %pM tid %d\n",
885 sta->addr, tid);
886 break;
887 case IEEE80211_AMPDU_RX_START:
888 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
889 "RX AGG START: MAC %pM tid %d ssn %d\n",
890 sta->addr, tid, rx_ba_ssn);
891 break;
892 case IEEE80211_AMPDU_RX_STOP:
893 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
894 "RX AGG STOP: MAC %pM tid %d\n",
895 sta->addr, tid);
896 break;
897 default:
898 break;
899 }
900 }
901
902 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
903 struct ieee80211_vif *vif,
904 struct ieee80211_ampdu_params *params)
905 {
906 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
907 int ret;
908 bool tx_agg_ref = false;
909 struct ieee80211_sta *sta = params->sta;
910 enum ieee80211_ampdu_mlme_action action = params->action;
911 u16 tid = params->tid;
912 u16 *ssn = &params->ssn;
913 u8 buf_size = params->buf_size;
914 bool amsdu = params->amsdu;
915 u16 timeout = params->timeout;
916
917 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
918 sta->addr, tid, action);
919
920 if (!(mvm->nvm_data->sku_cap_11n_enable))
921 return -EACCES;
922
923 /* return from D0i3 before starting a new Tx aggregation */
924 switch (action) {
925 case IEEE80211_AMPDU_TX_START:
926 case IEEE80211_AMPDU_TX_STOP_CONT:
927 case IEEE80211_AMPDU_TX_STOP_FLUSH:
928 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
929 case IEEE80211_AMPDU_TX_OPERATIONAL:
930 /*
931 * for tx start, wait synchronously until D0i3 exit to
932 * get the correct sequence number for the tid.
933 * additionally, some other ampdu actions use direct
934 * target access, which is not handled automatically
935 * by the trans layer (unlike commands), so wait for
936 * d0i3 exit in these cases as well.
937 */
938 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
939 if (ret)
940 return ret;
941
942 tx_agg_ref = true;
943 break;
944 default:
945 break;
946 }
947
948 mutex_lock(&mvm->mutex);
949
950 switch (action) {
951 case IEEE80211_AMPDU_RX_START:
952 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
953 ret = -EINVAL;
954 break;
955 }
956 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
957 timeout);
958 break;
959 case IEEE80211_AMPDU_RX_STOP:
960 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
961 timeout);
962 break;
963 case IEEE80211_AMPDU_TX_START:
964 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
965 ret = -EINVAL;
966 break;
967 }
968 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
969 break;
970 case IEEE80211_AMPDU_TX_STOP_CONT:
971 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
972 break;
973 case IEEE80211_AMPDU_TX_STOP_FLUSH:
974 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
975 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
976 break;
977 case IEEE80211_AMPDU_TX_OPERATIONAL:
978 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
979 buf_size, amsdu);
980 break;
981 default:
982 WARN_ON_ONCE(1);
983 ret = -EINVAL;
984 break;
985 }
986
987 if (!ret) {
988 u16 rx_ba_ssn = 0;
989
990 if (action == IEEE80211_AMPDU_RX_START)
991 rx_ba_ssn = *ssn;
992
993 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
994 rx_ba_ssn, action);
995 }
996 mutex_unlock(&mvm->mutex);
997
998 /*
999 * If the tid is marked as started, we won't use it for offloaded
1000 * traffic on the next D0i3 entry. It's safe to unref.
1001 */
1002 if (tx_agg_ref)
1003 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
1004
1005 return ret;
1006 }
1007
1008 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1009 struct ieee80211_vif *vif)
1010 {
1011 struct iwl_mvm *mvm = data;
1012 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1013
1014 mvmvif->uploaded = false;
1015 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1016
1017 spin_lock_bh(&mvm->time_event_lock);
1018 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1019 spin_unlock_bh(&mvm->time_event_lock);
1020
1021 mvmvif->phy_ctxt = NULL;
1022 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1023 }
1024
1025 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1026 {
1027 /* clear the D3 reconfig, we only need it to avoid dumping a
1028 * firmware coredump on reconfiguration, we shouldn't do that
1029 * on D3->D0 transition
1030 */
1031 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1032 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1033 iwl_mvm_fw_error_dump(mvm);
1034 }
1035
1036 /* cleanup all stale references (scan, roc), but keep the
1037 * ucode_down ref until reconfig is complete
1038 */
1039 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1040
1041 iwl_mvm_stop_device(mvm);
1042
1043 mvm->scan_status = 0;
1044 mvm->ps_disabled = false;
1045 mvm->calibrating = false;
1046
1047 /* just in case one was running */
1048 iwl_mvm_cleanup_roc_te(mvm);
1049 ieee80211_remain_on_channel_expired(mvm->hw);
1050
1051 /*
1052 * cleanup all interfaces, even inactive ones, as some might have
1053 * gone down during the HW restart
1054 */
1055 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1056
1057 mvm->p2p_device_vif = NULL;
1058 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1059
1060 iwl_mvm_reset_phy_ctxts(mvm);
1061 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1062 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1063 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1064 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1065 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1066 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1067
1068 ieee80211_wake_queues(mvm->hw);
1069
1070 /* clear any stale d0i3 state */
1071 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1072
1073 mvm->vif_count = 0;
1074 mvm->rx_ba_sessions = 0;
1075 mvm->fw_dbg_conf = FW_DBG_INVALID;
1076
1077 /* keep statistics ticking */
1078 iwl_mvm_accu_radio_stats(mvm);
1079 }
1080
1081 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1082 {
1083 int ret;
1084
1085 lockdep_assert_held(&mvm->mutex);
1086
1087 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
1088 /*
1089 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
1090 * so later code will - from now on - see that we're doing it.
1091 */
1092 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1093 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1094 /* Clean up some internal and mac80211 state on restart */
1095 iwl_mvm_restart_cleanup(mvm);
1096 } else {
1097 /* Hold the reference to prevent runtime suspend while
1098 * the start procedure runs. It's a bit confusing
1099 * that the UCODE_DOWN reference is taken, but it just
1100 * means "UCODE is not UP yet". ( TODO: rename this
1101 * reference).
1102 */
1103 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1104 }
1105 ret = iwl_mvm_up(mvm);
1106
1107 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1108 /* Something went wrong - we need to finish some cleanup
1109 * that normally iwl_mvm_mac_restart_complete() below
1110 * would do.
1111 */
1112 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1113 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1114 }
1115
1116 return ret;
1117 }
1118
1119 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1120 {
1121 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1122 int ret;
1123
1124 /* Some hw restart cleanups must not hold the mutex */
1125 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1126 /*
1127 * Make sure we are out of d0i3. This is needed
1128 * to make sure the reference accounting is correct
1129 * (and there is no stale d0i3_exit_work).
1130 */
1131 wait_event_timeout(mvm->d0i3_exit_waitq,
1132 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1133 &mvm->status),
1134 HZ);
1135 }
1136
1137 mutex_lock(&mvm->mutex);
1138 ret = __iwl_mvm_mac_start(mvm);
1139 mutex_unlock(&mvm->mutex);
1140
1141 return ret;
1142 }
1143
1144 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1145 {
1146 int ret;
1147
1148 mutex_lock(&mvm->mutex);
1149
1150 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1151 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1152 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1153 if (ret)
1154 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1155 ret);
1156
1157 /* allow transport/FW low power modes */
1158 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1159
1160 /*
1161 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1162 * of packets the FW sent out, so we must reconnect.
1163 */
1164 iwl_mvm_teardown_tdls_peers(mvm);
1165
1166 mutex_unlock(&mvm->mutex);
1167 }
1168
1169 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1170 {
1171 if (iwl_mvm_is_d0i3_supported(mvm) &&
1172 iwl_mvm_enter_d0i3_on_suspend(mvm))
1173 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1174 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1175 &mvm->status),
1176 HZ),
1177 "D0i3 exit on resume timed out\n");
1178 }
1179
1180 static void
1181 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1182 enum ieee80211_reconfig_type reconfig_type)
1183 {
1184 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1185
1186 switch (reconfig_type) {
1187 case IEEE80211_RECONFIG_TYPE_RESTART:
1188 iwl_mvm_restart_complete(mvm);
1189 break;
1190 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1191 iwl_mvm_resume_complete(mvm);
1192 break;
1193 }
1194 }
1195
1196 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1197 {
1198 lockdep_assert_held(&mvm->mutex);
1199
1200 /* firmware counters are obviously reset now, but we shouldn't
1201 * partially track so also clear the fw_reset_accu counters.
1202 */
1203 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1204
1205 /* async_handlers_wk is now blocked */
1206
1207 /*
1208 * The work item could be running or queued if the
1209 * ROC time event stops just as we get here.
1210 */
1211 flush_work(&mvm->roc_done_wk);
1212
1213 iwl_mvm_stop_device(mvm);
1214
1215 iwl_mvm_async_handlers_purge(mvm);
1216 /* async_handlers_list is empty and will stay empty: HW is stopped */
1217
1218 /* the fw is stopped, the aux sta is dead: clean up driver state */
1219 iwl_mvm_del_aux_sta(mvm);
1220
1221 /*
1222 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1223 * won't be called in this case).
1224 * But make sure to cleanup interfaces that have gone down before/during
1225 * HW restart was requested.
1226 */
1227 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1228 ieee80211_iterate_interfaces(mvm->hw, 0,
1229 iwl_mvm_cleanup_iterator, mvm);
1230
1231 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1232 * make sure there's nothing left there and warn if any is found.
1233 */
1234 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1235 int i;
1236
1237 for (i = 0; i < mvm->max_scans; i++) {
1238 if (WARN_ONCE(mvm->scan_uid_status[i],
1239 "UMAC scan UID %d status was not cleaned\n",
1240 i))
1241 mvm->scan_uid_status[i] = 0;
1242 }
1243 }
1244 }
1245
1246 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1247 {
1248 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1249
1250 flush_work(&mvm->d0i3_exit_work);
1251 flush_work(&mvm->async_handlers_wk);
1252 flush_work(&mvm->add_stream_wk);
1253
1254 /*
1255 * Lock and clear the firmware running bit here already, so that
1256 * new commands coming in elsewhere, e.g. from debugfs, will not
1257 * be able to proceed. This is important here because one of those
1258 * debugfs files causes the fw_dump_wk to be triggered, and if we
1259 * don't stop debugfs accesses before canceling that it could be
1260 * retriggered after we flush it but before we've cleared the bit.
1261 */
1262 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1263
1264 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1265 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1266 cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1267 iwl_mvm_free_fw_dump_desc(mvm);
1268
1269 mutex_lock(&mvm->mutex);
1270 __iwl_mvm_mac_stop(mvm);
1271 mutex_unlock(&mvm->mutex);
1272
1273 /*
1274 * The worker might have been waiting for the mutex, let it run and
1275 * discover that its list is now empty.
1276 */
1277 cancel_work_sync(&mvm->async_handlers_wk);
1278 }
1279
1280 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1281 {
1282 u16 i;
1283
1284 lockdep_assert_held(&mvm->mutex);
1285
1286 for (i = 0; i < NUM_PHY_CTX; i++)
1287 if (!mvm->phy_ctxts[i].ref)
1288 return &mvm->phy_ctxts[i];
1289
1290 IWL_ERR(mvm, "No available PHY context\n");
1291 return NULL;
1292 }
1293
1294 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1295 s16 tx_power)
1296 {
1297 struct iwl_dev_tx_power_cmd cmd = {
1298 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1299 .v3.mac_context_id =
1300 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1301 .v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1302 };
1303 int len = sizeof(cmd);
1304
1305 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1306 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1307
1308 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1309 len = sizeof(cmd.v3);
1310
1311 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1312 }
1313
1314 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1315 struct ieee80211_vif *vif)
1316 {
1317 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1318 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1319 int ret;
1320
1321 mvmvif->mvm = mvm;
1322
1323 /*
1324 * make sure D0i3 exit is completed, otherwise a target access
1325 * during tx queue configuration could be done when still in
1326 * D0i3 state.
1327 */
1328 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1329 if (ret)
1330 return ret;
1331
1332 /*
1333 * Not much to do here. The stack will not allow interface
1334 * types or combinations that we didn't advertise, so we
1335 * don't really have to check the types.
1336 */
1337
1338 mutex_lock(&mvm->mutex);
1339
1340 /* make sure that beacon statistics don't go backwards with FW reset */
1341 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1342 mvmvif->beacon_stats.accu_num_beacons +=
1343 mvmvif->beacon_stats.num_beacons;
1344
1345 /* Allocate resources for the MAC context, and add it to the fw */
1346 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1347 if (ret)
1348 goto out_unlock;
1349
1350 /* Counting number of interfaces is needed for legacy PM */
1351 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1352 mvm->vif_count++;
1353
1354 /*
1355 * The AP binding flow can be done only after the beacon
1356 * template is configured (which happens only in the mac80211
1357 * start_ap() flow), and adding the broadcast station can happen
1358 * only after the binding.
1359 * In addition, since modifying the MAC before adding a bcast
1360 * station is not allowed by the FW, delay the adding of MAC context to
1361 * the point where we can also add the bcast station.
1362 * In short: there's not much we can do at this point, other than
1363 * allocating resources :)
1364 */
1365 if (vif->type == NL80211_IFTYPE_AP ||
1366 vif->type == NL80211_IFTYPE_ADHOC) {
1367 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1368 if (ret) {
1369 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1370 goto out_release;
1371 }
1372
1373 if (iwl_mvm_is_dqa_supported(mvm)) {
1374 /*
1375 * Only queue for this station is the mcast queue,
1376 * which shouldn't be in TFD mask anyway
1377 */
1378 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1379 0, vif->type,
1380 IWL_STA_MULTICAST);
1381 if (ret)
1382 goto out_release;
1383 }
1384
1385 iwl_mvm_vif_dbgfs_register(mvm, vif);
1386 goto out_unlock;
1387 }
1388
1389 mvmvif->features |= hw->netdev_features;
1390
1391 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1392 if (ret)
1393 goto out_release;
1394
1395 ret = iwl_mvm_power_update_mac(mvm);
1396 if (ret)
1397 goto out_remove_mac;
1398
1399 /* beacon filtering */
1400 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1401 if (ret)
1402 goto out_remove_mac;
1403
1404 if (!mvm->bf_allowed_vif &&
1405 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1406 mvm->bf_allowed_vif = mvmvif;
1407 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1408 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1409 }
1410
1411 /*
1412 * P2P_DEVICE interface does not have a channel context assigned to it,
1413 * so a dedicated PHY context is allocated to it and the corresponding
1414 * MAC context is bound to it at this stage.
1415 */
1416 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1417
1418 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1419 if (!mvmvif->phy_ctxt) {
1420 ret = -ENOSPC;
1421 goto out_free_bf;
1422 }
1423
1424 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1425 ret = iwl_mvm_binding_add_vif(mvm, vif);
1426 if (ret)
1427 goto out_unref_phy;
1428
1429 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1430 if (ret)
1431 goto out_unbind;
1432
1433 /* Save a pointer to p2p device vif, so it can later be used to
1434 * update the p2p device MAC when a GO is started/stopped */
1435 mvm->p2p_device_vif = vif;
1436 }
1437
1438 iwl_mvm_vif_dbgfs_register(mvm, vif);
1439 goto out_unlock;
1440
1441 out_unbind:
1442 iwl_mvm_binding_remove_vif(mvm, vif);
1443 out_unref_phy:
1444 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1445 out_free_bf:
1446 if (mvm->bf_allowed_vif == mvmvif) {
1447 mvm->bf_allowed_vif = NULL;
1448 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1449 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1450 }
1451 out_remove_mac:
1452 mvmvif->phy_ctxt = NULL;
1453 iwl_mvm_mac_ctxt_remove(mvm, vif);
1454 out_release:
1455 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1456 mvm->vif_count--;
1457
1458 iwl_mvm_mac_ctxt_release(mvm, vif);
1459 out_unlock:
1460 mutex_unlock(&mvm->mutex);
1461
1462 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1463
1464 return ret;
1465 }
1466
1467 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1468 struct ieee80211_vif *vif)
1469 {
1470 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1471
1472 if (tfd_msk && !iwl_mvm_is_dqa_supported(mvm)) {
1473 /*
1474 * mac80211 first removes all the stations of the vif and
1475 * then removes the vif. When it removes a station it also
1476 * flushes the AMPDU session. So by now, all the AMPDU sessions
1477 * of all the stations of this vif are closed, and the queues
1478 * of these AMPDU sessions are properly closed.
1479 * We still need to take care of the shared queues of the vif.
1480 * Flush them here.
1481 * For DQA mode there is no need - broacast and multicast queue
1482 * are flushed separately.
1483 */
1484 mutex_lock(&mvm->mutex);
1485 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1486 mutex_unlock(&mvm->mutex);
1487
1488 /*
1489 * There are transports that buffer a few frames in the host.
1490 * For these, the flush above isn't enough since while we were
1491 * flushing, the transport might have sent more frames to the
1492 * device. To solve this, wait here until the transport is
1493 * empty. Technically, this could have replaced the flush
1494 * above, but flush is much faster than draining. So flush
1495 * first, and drain to make sure we have no frames in the
1496 * transport anymore.
1497 * If a station still had frames on the shared queues, it is
1498 * already marked as draining, so to complete the draining, we
1499 * just need to wait until the transport is empty.
1500 */
1501 iwl_trans_wait_tx_queues_empty(mvm->trans, tfd_msk);
1502 }
1503
1504 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1505 /*
1506 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1507 * We assume here that all the packets sent to the OFFCHANNEL
1508 * queue are sent in ROC session.
1509 */
1510 flush_work(&mvm->roc_done_wk);
1511 } else {
1512 /*
1513 * By now, all the AC queues are empty. The AGG queues are
1514 * empty too. We already got all the Tx responses for all the
1515 * packets in the queues. The drain work can have been
1516 * triggered. Flush it.
1517 */
1518 flush_work(&mvm->sta_drained_wk);
1519 }
1520 }
1521
1522 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1523 struct ieee80211_vif *vif)
1524 {
1525 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1526 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1527
1528 iwl_mvm_prepare_mac_removal(mvm, vif);
1529
1530 mutex_lock(&mvm->mutex);
1531
1532 if (mvm->bf_allowed_vif == mvmvif) {
1533 mvm->bf_allowed_vif = NULL;
1534 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1535 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1536 }
1537
1538 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1539
1540 /*
1541 * For AP/GO interface, the tear down of the resources allocated to the
1542 * interface is be handled as part of the stop_ap flow.
1543 */
1544 if (vif->type == NL80211_IFTYPE_AP ||
1545 vif->type == NL80211_IFTYPE_ADHOC) {
1546 #ifdef CONFIG_NL80211_TESTMODE
1547 if (vif == mvm->noa_vif) {
1548 mvm->noa_vif = NULL;
1549 mvm->noa_duration = 0;
1550 }
1551 #endif
1552 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1553 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1554 goto out_release;
1555 }
1556
1557 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1558 mvm->p2p_device_vif = NULL;
1559 iwl_mvm_rm_bcast_sta(mvm, vif);
1560 iwl_mvm_binding_remove_vif(mvm, vif);
1561 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1562 mvmvif->phy_ctxt = NULL;
1563 }
1564
1565 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1566 mvm->vif_count--;
1567
1568 iwl_mvm_power_update_mac(mvm);
1569 iwl_mvm_mac_ctxt_remove(mvm, vif);
1570
1571 out_release:
1572 iwl_mvm_mac_ctxt_release(mvm, vif);
1573 mutex_unlock(&mvm->mutex);
1574 }
1575
1576 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1577 {
1578 return 0;
1579 }
1580
1581 struct iwl_mvm_mc_iter_data {
1582 struct iwl_mvm *mvm;
1583 int port_id;
1584 };
1585
1586 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1587 struct ieee80211_vif *vif)
1588 {
1589 struct iwl_mvm_mc_iter_data *data = _data;
1590 struct iwl_mvm *mvm = data->mvm;
1591 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1592 int ret, len;
1593
1594 /* if we don't have free ports, mcast frames will be dropped */
1595 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1596 return;
1597
1598 if (vif->type != NL80211_IFTYPE_STATION ||
1599 !vif->bss_conf.assoc)
1600 return;
1601
1602 cmd->port_id = data->port_id++;
1603 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1604 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1605
1606 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1607 if (ret)
1608 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1609 }
1610
1611 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1612 {
1613 struct iwl_mvm_mc_iter_data iter_data = {
1614 .mvm = mvm,
1615 };
1616
1617 lockdep_assert_held(&mvm->mutex);
1618
1619 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1620 return;
1621
1622 ieee80211_iterate_active_interfaces_atomic(
1623 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1624 iwl_mvm_mc_iface_iterator, &iter_data);
1625 }
1626
1627 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1628 struct netdev_hw_addr_list *mc_list)
1629 {
1630 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1631 struct iwl_mcast_filter_cmd *cmd;
1632 struct netdev_hw_addr *addr;
1633 int addr_count;
1634 bool pass_all;
1635 int len;
1636
1637 addr_count = netdev_hw_addr_list_count(mc_list);
1638 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1639 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1640 if (pass_all)
1641 addr_count = 0;
1642
1643 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1644 cmd = kzalloc(len, GFP_ATOMIC);
1645 if (!cmd)
1646 return 0;
1647
1648 if (pass_all) {
1649 cmd->pass_all = 1;
1650 return (u64)(unsigned long)cmd;
1651 }
1652
1653 netdev_hw_addr_list_for_each(addr, mc_list) {
1654 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1655 cmd->count, addr->addr);
1656 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1657 addr->addr, ETH_ALEN);
1658 cmd->count++;
1659 }
1660
1661 return (u64)(unsigned long)cmd;
1662 }
1663
1664 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1665 unsigned int changed_flags,
1666 unsigned int *total_flags,
1667 u64 multicast)
1668 {
1669 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1670 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1671
1672 mutex_lock(&mvm->mutex);
1673
1674 /* replace previous configuration */
1675 kfree(mvm->mcast_filter_cmd);
1676 mvm->mcast_filter_cmd = cmd;
1677
1678 if (!cmd)
1679 goto out;
1680
1681 iwl_mvm_recalc_multicast(mvm);
1682 out:
1683 mutex_unlock(&mvm->mutex);
1684 *total_flags = 0;
1685 }
1686
1687 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1688 struct ieee80211_vif *vif,
1689 unsigned int filter_flags,
1690 unsigned int changed_flags)
1691 {
1692 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1693
1694 /* We support only filter for probe requests */
1695 if (!(changed_flags & FIF_PROBE_REQ))
1696 return;
1697
1698 /* Supported only for p2p client interfaces */
1699 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1700 !vif->p2p)
1701 return;
1702
1703 mutex_lock(&mvm->mutex);
1704 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1705 mutex_unlock(&mvm->mutex);
1706 }
1707
1708 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1709 struct iwl_bcast_iter_data {
1710 struct iwl_mvm *mvm;
1711 struct iwl_bcast_filter_cmd *cmd;
1712 u8 current_filter;
1713 };
1714
1715 static void
1716 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1717 const struct iwl_fw_bcast_filter *in_filter,
1718 struct iwl_fw_bcast_filter *out_filter)
1719 {
1720 struct iwl_fw_bcast_filter_attr *attr;
1721 int i;
1722
1723 memcpy(out_filter, in_filter, sizeof(*out_filter));
1724
1725 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1726 attr = &out_filter->attrs[i];
1727
1728 if (!attr->mask)
1729 break;
1730
1731 switch (attr->reserved1) {
1732 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1733 if (vif->bss_conf.arp_addr_cnt != 1) {
1734 attr->mask = 0;
1735 continue;
1736 }
1737
1738 attr->val = vif->bss_conf.arp_addr_list[0];
1739 break;
1740 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1741 attr->val = *(__be32 *)&vif->addr[2];
1742 break;
1743 default:
1744 break;
1745 }
1746 attr->reserved1 = 0;
1747 out_filter->num_attrs++;
1748 }
1749 }
1750
1751 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1752 struct ieee80211_vif *vif)
1753 {
1754 struct iwl_bcast_iter_data *data = _data;
1755 struct iwl_mvm *mvm = data->mvm;
1756 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1757 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1758 struct iwl_fw_bcast_mac *bcast_mac;
1759 int i;
1760
1761 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1762 return;
1763
1764 bcast_mac = &cmd->macs[mvmvif->id];
1765
1766 /*
1767 * enable filtering only for associated stations, but not for P2P
1768 * Clients
1769 */
1770 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1771 !vif->bss_conf.assoc)
1772 return;
1773
1774 bcast_mac->default_discard = 1;
1775
1776 /* copy all configured filters */
1777 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1778 /*
1779 * Make sure we don't exceed our filters limit.
1780 * if there is still a valid filter to be configured,
1781 * be on the safe side and just allow bcast for this mac.
1782 */
1783 if (WARN_ON_ONCE(data->current_filter >=
1784 ARRAY_SIZE(cmd->filters))) {
1785 bcast_mac->default_discard = 0;
1786 bcast_mac->attached_filters = 0;
1787 break;
1788 }
1789
1790 iwl_mvm_set_bcast_filter(vif,
1791 &mvm->bcast_filters[i],
1792 &cmd->filters[data->current_filter]);
1793
1794 /* skip current filter if it contains no attributes */
1795 if (!cmd->filters[data->current_filter].num_attrs)
1796 continue;
1797
1798 /* attach the filter to current mac */
1799 bcast_mac->attached_filters |=
1800 cpu_to_le16(BIT(data->current_filter));
1801
1802 data->current_filter++;
1803 }
1804 }
1805
1806 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1807 struct iwl_bcast_filter_cmd *cmd)
1808 {
1809 struct iwl_bcast_iter_data iter_data = {
1810 .mvm = mvm,
1811 .cmd = cmd,
1812 };
1813
1814 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1815 return false;
1816
1817 memset(cmd, 0, sizeof(*cmd));
1818 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1819 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1820
1821 #ifdef CONFIG_IWLWIFI_DEBUGFS
1822 /* use debugfs filters/macs if override is configured */
1823 if (mvm->dbgfs_bcast_filtering.override) {
1824 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1825 sizeof(cmd->filters));
1826 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1827 sizeof(cmd->macs));
1828 return true;
1829 }
1830 #endif
1831
1832 /* if no filters are configured, do nothing */
1833 if (!mvm->bcast_filters)
1834 return false;
1835
1836 /* configure and attach these filters for each associated sta vif */
1837 ieee80211_iterate_active_interfaces(
1838 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1839 iwl_mvm_bcast_filter_iterator, &iter_data);
1840
1841 return true;
1842 }
1843
1844 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1845 {
1846 struct iwl_bcast_filter_cmd cmd;
1847
1848 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1849 return 0;
1850
1851 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1852 return 0;
1853
1854 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1855 sizeof(cmd), &cmd);
1856 }
1857 #else
1858 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1859 {
1860 return 0;
1861 }
1862 #endif
1863
1864 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1865 struct ieee80211_vif *vif)
1866 {
1867 struct iwl_mu_group_mgmt_cmd cmd = {};
1868
1869 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1870 WLAN_MEMBERSHIP_LEN);
1871 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1872 WLAN_USER_POSITION_LEN);
1873
1874 return iwl_mvm_send_cmd_pdu(mvm,
1875 WIDE_ID(DATA_PATH_GROUP,
1876 UPDATE_MU_GROUPS_CMD),
1877 0, sizeof(cmd), &cmd);
1878 }
1879
1880 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1881 struct ieee80211_vif *vif)
1882 {
1883 if (vif->mu_mimo_owner) {
1884 struct iwl_mu_group_mgmt_notif *notif = _data;
1885
1886 /*
1887 * MU-MIMO Group Id action frame is little endian. We treat
1888 * the data received from firmware as if it came from the
1889 * action frame, so no conversion is needed.
1890 */
1891 ieee80211_update_mu_groups(vif,
1892 (u8 *)&notif->membership_status,
1893 (u8 *)&notif->user_position);
1894 }
1895 }
1896
1897 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1898 struct iwl_rx_cmd_buffer *rxb)
1899 {
1900 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1901 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1902
1903 ieee80211_iterate_active_interfaces_atomic(
1904 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1905 iwl_mvm_mu_mimo_iface_iterator, notif);
1906 }
1907
1908 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1909 struct ieee80211_vif *vif,
1910 struct ieee80211_bss_conf *bss_conf,
1911 u32 changes)
1912 {
1913 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1914 int ret;
1915
1916 /*
1917 * Re-calculate the tsf id, as the master-slave relations depend on the
1918 * beacon interval, which was not known when the station interface was
1919 * added.
1920 */
1921 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1922 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1923
1924 if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1925 mvmvif->lqm_active)
1926 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1927 0, 0);
1928
1929 /*
1930 * If we're not associated yet, take the (new) BSSID before associating
1931 * so the firmware knows. If we're already associated, then use the old
1932 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1933 * branch for disassociation below.
1934 */
1935 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1936 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1937
1938 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1939 if (ret)
1940 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1941
1942 /* after sending it once, adopt mac80211 data */
1943 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1944 mvmvif->associated = bss_conf->assoc;
1945
1946 if (changes & BSS_CHANGED_ASSOC) {
1947 if (bss_conf->assoc) {
1948 /* clear statistics to get clean beacon counter */
1949 iwl_mvm_request_statistics(mvm, true);
1950 memset(&mvmvif->beacon_stats, 0,
1951 sizeof(mvmvif->beacon_stats));
1952
1953 /* add quota for this interface */
1954 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1955 if (ret) {
1956 IWL_ERR(mvm, "failed to update quotas\n");
1957 return;
1958 }
1959
1960 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1961 &mvm->status)) {
1962 /*
1963 * If we're restarting then the firmware will
1964 * obviously have lost synchronisation with
1965 * the AP. It will attempt to synchronise by
1966 * itself, but we can make it more reliable by
1967 * scheduling a session protection time event.
1968 *
1969 * The firmware needs to receive a beacon to
1970 * catch up with synchronisation, use 110% of
1971 * the beacon interval.
1972 *
1973 * Set a large maximum delay to allow for more
1974 * than a single interface.
1975 */
1976 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1977 iwl_mvm_protect_session(mvm, vif, dur, dur,
1978 5 * dur, false);
1979 }
1980
1981 iwl_mvm_sf_update(mvm, vif, false);
1982 iwl_mvm_power_vif_assoc(mvm, vif);
1983 if (vif->p2p) {
1984 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1985 iwl_mvm_update_smps(mvm, vif,
1986 IWL_MVM_SMPS_REQ_PROT,
1987 IEEE80211_SMPS_DYNAMIC);
1988 }
1989 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
1990 /*
1991 * If update fails - SF might be running in associated
1992 * mode while disassociated - which is forbidden.
1993 */
1994 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1995 "Failed to update SF upon disassociation\n");
1996
1997 /*
1998 * If we get an assert during the connection (after the
1999 * station has been added, but before the vif is set
2000 * to associated), mac80211 will re-add the station and
2001 * then configure the vif. Since the vif is not
2002 * associated, we would remove the station here and
2003 * this would fail the recovery.
2004 */
2005 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2006 &mvm->status)) {
2007 /*
2008 * Remove AP station now that
2009 * the MAC is unassoc
2010 */
2011 ret = iwl_mvm_rm_sta_id(mvm, vif,
2012 mvmvif->ap_sta_id);
2013 if (ret)
2014 IWL_ERR(mvm,
2015 "failed to remove AP station\n");
2016
2017 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2018 mvm->d0i3_ap_sta_id =
2019 IWL_MVM_INVALID_STA;
2020 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
2021 }
2022
2023 /* remove quota for this interface */
2024 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2025 if (ret)
2026 IWL_ERR(mvm, "failed to update quotas\n");
2027
2028 if (vif->p2p)
2029 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2030
2031 /* this will take the cleared BSSID from bss_conf */
2032 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2033 if (ret)
2034 IWL_ERR(mvm,
2035 "failed to update MAC %pM (clear after unassoc)\n",
2036 vif->addr);
2037 }
2038
2039 /*
2040 * The firmware tracks the MU-MIMO group on its own.
2041 * However, on HW restart we should restore this data.
2042 */
2043 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2044 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2045 ret = iwl_mvm_update_mu_groups(mvm, vif);
2046 if (ret)
2047 IWL_ERR(mvm,
2048 "failed to update VHT MU_MIMO groups\n");
2049 }
2050
2051 iwl_mvm_recalc_multicast(mvm);
2052 iwl_mvm_configure_bcast_filter(mvm);
2053
2054 /* reset rssi values */
2055 mvmvif->bf_data.ave_beacon_signal = 0;
2056
2057 iwl_mvm_bt_coex_vif_change(mvm);
2058 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2059 IEEE80211_SMPS_AUTOMATIC);
2060 if (fw_has_capa(&mvm->fw->ucode_capa,
2061 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2062 iwl_mvm_config_scan(mvm);
2063 }
2064
2065 if (changes & BSS_CHANGED_BEACON_INFO) {
2066 /*
2067 * We received a beacon from the associated AP so
2068 * remove the session protection.
2069 */
2070 iwl_mvm_remove_time_event(mvm, mvmvif,
2071 &mvmvif->time_event_data);
2072
2073 iwl_mvm_sf_update(mvm, vif, false);
2074 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2075 }
2076
2077 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2078 /*
2079 * Send power command on every beacon change,
2080 * because we may have not enabled beacon abort yet.
2081 */
2082 BSS_CHANGED_BEACON_INFO)) {
2083 ret = iwl_mvm_power_update_mac(mvm);
2084 if (ret)
2085 IWL_ERR(mvm, "failed to update power mode\n");
2086 }
2087
2088 if (changes & BSS_CHANGED_TXPOWER) {
2089 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2090 bss_conf->txpower);
2091 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2092 }
2093
2094 if (changes & BSS_CHANGED_CQM) {
2095 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2096 /* reset cqm events tracking */
2097 mvmvif->bf_data.last_cqm_event = 0;
2098 if (mvmvif->bf_data.bf_enabled) {
2099 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2100 if (ret)
2101 IWL_ERR(mvm,
2102 "failed to update CQM thresholds\n");
2103 }
2104 }
2105
2106 if (changes & BSS_CHANGED_ARP_FILTER) {
2107 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2108 iwl_mvm_configure_bcast_filter(mvm);
2109 }
2110 }
2111
2112 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2113 struct ieee80211_vif *vif)
2114 {
2115 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2116 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2117 int ret;
2118
2119 /*
2120 * iwl_mvm_mac_ctxt_add() might read directly from the device
2121 * (the system time), so make sure it is available.
2122 */
2123 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2124 if (ret)
2125 return ret;
2126
2127 mutex_lock(&mvm->mutex);
2128
2129 /* Send the beacon template */
2130 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2131 if (ret)
2132 goto out_unlock;
2133
2134 /*
2135 * Re-calculate the tsf id, as the master-slave relations depend on the
2136 * beacon interval, which was not known when the AP interface was added.
2137 */
2138 if (vif->type == NL80211_IFTYPE_AP)
2139 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2140
2141 mvmvif->ap_assoc_sta_count = 0;
2142
2143 /* Add the mac context */
2144 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2145 if (ret)
2146 goto out_unlock;
2147
2148 /* Perform the binding */
2149 ret = iwl_mvm_binding_add_vif(mvm, vif);
2150 if (ret)
2151 goto out_remove;
2152
2153 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2154 if (ret)
2155 goto out_unbind;
2156
2157 /* Send the bcast station. At this stage the TBTT and DTIM time events
2158 * are added and applied to the scheduler */
2159 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2160 if (ret)
2161 goto out_rm_mcast;
2162
2163 /* must be set before quota calculations */
2164 mvmvif->ap_ibss_active = true;
2165
2166 /* power updated needs to be done before quotas */
2167 iwl_mvm_power_update_mac(mvm);
2168
2169 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2170 if (ret)
2171 goto out_quota_failed;
2172
2173 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2174 if (vif->p2p && mvm->p2p_device_vif)
2175 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2176
2177 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2178
2179 iwl_mvm_bt_coex_vif_change(mvm);
2180
2181 /* we don't support TDLS during DCM */
2182 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2183 iwl_mvm_teardown_tdls_peers(mvm);
2184
2185 goto out_unlock;
2186
2187 out_quota_failed:
2188 iwl_mvm_power_update_mac(mvm);
2189 mvmvif->ap_ibss_active = false;
2190 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2191 out_rm_mcast:
2192 iwl_mvm_rm_mcast_sta(mvm, vif);
2193 out_unbind:
2194 iwl_mvm_binding_remove_vif(mvm, vif);
2195 out_remove:
2196 iwl_mvm_mac_ctxt_remove(mvm, vif);
2197 out_unlock:
2198 mutex_unlock(&mvm->mutex);
2199 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2200 return ret;
2201 }
2202
2203 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2204 struct ieee80211_vif *vif)
2205 {
2206 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2207 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2208
2209 iwl_mvm_prepare_mac_removal(mvm, vif);
2210
2211 mutex_lock(&mvm->mutex);
2212
2213 /* Handle AP stop while in CSA */
2214 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2215 iwl_mvm_remove_time_event(mvm, mvmvif,
2216 &mvmvif->time_event_data);
2217 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2218 mvmvif->csa_countdown = false;
2219 }
2220
2221 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2222 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2223 mvm->csa_tx_block_bcn_timeout = 0;
2224 }
2225
2226 mvmvif->ap_ibss_active = false;
2227 mvm->ap_last_beacon_gp2 = 0;
2228
2229 iwl_mvm_bt_coex_vif_change(mvm);
2230
2231 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2232
2233 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2234 if (vif->p2p && mvm->p2p_device_vif)
2235 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2236
2237 iwl_mvm_update_quotas(mvm, false, NULL);
2238
2239 /*
2240 * This is not very nice, but the simplest:
2241 * For older FWs removing the mcast sta before the bcast station may
2242 * cause assert 0x2b00.
2243 * This is fixed in later FW (which will stop beaconing when removing
2244 * bcast station).
2245 * So make the order of removal depend on the TLV
2246 */
2247 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2248 iwl_mvm_rm_mcast_sta(mvm, vif);
2249 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2250 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2251 iwl_mvm_rm_mcast_sta(mvm, vif);
2252 iwl_mvm_binding_remove_vif(mvm, vif);
2253
2254 iwl_mvm_power_update_mac(mvm);
2255
2256 iwl_mvm_mac_ctxt_remove(mvm, vif);
2257
2258 mutex_unlock(&mvm->mutex);
2259 }
2260
2261 static void
2262 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2263 struct ieee80211_vif *vif,
2264 struct ieee80211_bss_conf *bss_conf,
2265 u32 changes)
2266 {
2267 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2268
2269 /* Changes will be applied when the AP/IBSS is started */
2270 if (!mvmvif->ap_ibss_active)
2271 return;
2272
2273 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2274 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2275 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2276 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2277
2278 /* Need to send a new beacon template to the FW */
2279 if (changes & BSS_CHANGED_BEACON &&
2280 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2281 IWL_WARN(mvm, "Failed updating beacon data\n");
2282
2283 if (changes & BSS_CHANGED_TXPOWER) {
2284 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2285 bss_conf->txpower);
2286 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2287 }
2288 }
2289
2290 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2291 struct ieee80211_vif *vif,
2292 struct ieee80211_bss_conf *bss_conf,
2293 u32 changes)
2294 {
2295 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2296
2297 /*
2298 * iwl_mvm_bss_info_changed_station() might call
2299 * iwl_mvm_protect_session(), which reads directly from
2300 * the device (the system time), so make sure it is available.
2301 */
2302 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2303 return;
2304
2305 mutex_lock(&mvm->mutex);
2306
2307 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2308 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2309
2310 switch (vif->type) {
2311 case NL80211_IFTYPE_STATION:
2312 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2313 break;
2314 case NL80211_IFTYPE_AP:
2315 case NL80211_IFTYPE_ADHOC:
2316 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2317 break;
2318 case NL80211_IFTYPE_MONITOR:
2319 if (changes & BSS_CHANGED_MU_GROUPS)
2320 iwl_mvm_update_mu_groups(mvm, vif);
2321 break;
2322 default:
2323 /* shouldn't happen */
2324 WARN_ON_ONCE(1);
2325 }
2326
2327 mutex_unlock(&mvm->mutex);
2328 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2329 }
2330
2331 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2332 struct ieee80211_vif *vif,
2333 struct ieee80211_scan_request *hw_req)
2334 {
2335 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2336 int ret;
2337
2338 if (hw_req->req.n_channels == 0 ||
2339 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2340 return -EINVAL;
2341
2342 mutex_lock(&mvm->mutex);
2343 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2344 mutex_unlock(&mvm->mutex);
2345
2346 return ret;
2347 }
2348
2349 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2350 struct ieee80211_vif *vif)
2351 {
2352 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2353
2354 mutex_lock(&mvm->mutex);
2355
2356 /* Due to a race condition, it's possible that mac80211 asks
2357 * us to stop a hw_scan when it's already stopped. This can
2358 * happen, for instance, if we stopped the scan ourselves,
2359 * called ieee80211_scan_completed() and the userspace called
2360 * cancel scan scan before ieee80211_scan_work() could run.
2361 * To handle that, simply return if the scan is not running.
2362 */
2363 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2364 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2365
2366 mutex_unlock(&mvm->mutex);
2367 }
2368
2369 static void
2370 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2371 struct ieee80211_sta *sta, u16 tids,
2372 int num_frames,
2373 enum ieee80211_frame_release_type reason,
2374 bool more_data)
2375 {
2376 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2377
2378 /* Called when we need to transmit (a) frame(s) from mac80211 */
2379
2380 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2381 tids, more_data, false);
2382 }
2383
2384 static void
2385 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2386 struct ieee80211_sta *sta, u16 tids,
2387 int num_frames,
2388 enum ieee80211_frame_release_type reason,
2389 bool more_data)
2390 {
2391 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2392
2393 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2394
2395 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2396 tids, more_data, true);
2397 }
2398
2399 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2400 enum sta_notify_cmd cmd,
2401 struct ieee80211_sta *sta)
2402 {
2403 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2404 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2405 unsigned long txqs = 0, tids = 0;
2406 int tid;
2407
2408 spin_lock_bh(&mvmsta->lock);
2409 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2410 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2411
2412 if (!iwl_mvm_is_dqa_supported(mvm) &&
2413 tid_data->state != IWL_AGG_ON &&
2414 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2415 continue;
2416
2417 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2418 continue;
2419
2420 __set_bit(tid_data->txq_id, &txqs);
2421
2422 if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2423 continue;
2424
2425 __set_bit(tid, &tids);
2426 }
2427
2428 switch (cmd) {
2429 case STA_NOTIFY_SLEEP:
2430 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2431 ieee80211_sta_block_awake(hw, sta, true);
2432
2433 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2434 ieee80211_sta_set_buffered(sta, tid, true);
2435
2436 if (txqs)
2437 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2438 /*
2439 * The fw updates the STA to be asleep. Tx packets on the Tx
2440 * queues to this station will not be transmitted. The fw will
2441 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2442 */
2443 break;
2444 case STA_NOTIFY_AWAKE:
2445 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2446 break;
2447
2448 if (txqs)
2449 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2450 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2451 break;
2452 default:
2453 break;
2454 }
2455 spin_unlock_bh(&mvmsta->lock);
2456 }
2457
2458 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2459 struct ieee80211_vif *vif,
2460 enum sta_notify_cmd cmd,
2461 struct ieee80211_sta *sta)
2462 {
2463 __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2464 }
2465
2466 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2467 {
2468 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2469 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2470 struct ieee80211_sta *sta;
2471 struct iwl_mvm_sta *mvmsta;
2472 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2473
2474 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2475 return;
2476
2477 rcu_read_lock();
2478 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2479 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2480 rcu_read_unlock();
2481 return;
2482 }
2483
2484 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2485
2486 if (!mvmsta->vif ||
2487 mvmsta->vif->type != NL80211_IFTYPE_AP) {
2488 rcu_read_unlock();
2489 return;
2490 }
2491
2492 if (mvmsta->sleeping != sleeping) {
2493 mvmsta->sleeping = sleeping;
2494 __iwl_mvm_mac_sta_notify(mvm->hw,
2495 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2496 sta);
2497 ieee80211_sta_ps_transition(sta, sleeping);
2498 }
2499
2500 if (sleeping) {
2501 switch (notif->type) {
2502 case IWL_MVM_PM_EVENT_AWAKE:
2503 case IWL_MVM_PM_EVENT_ASLEEP:
2504 break;
2505 case IWL_MVM_PM_EVENT_UAPSD:
2506 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2507 break;
2508 case IWL_MVM_PM_EVENT_PS_POLL:
2509 ieee80211_sta_pspoll(sta);
2510 break;
2511 default:
2512 break;
2513 }
2514 }
2515
2516 rcu_read_unlock();
2517 }
2518
2519 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2520 struct ieee80211_vif *vif,
2521 struct ieee80211_sta *sta)
2522 {
2523 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2524 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2525
2526 /*
2527 * This is called before mac80211 does RCU synchronisation,
2528 * so here we already invalidate our internal RCU-protected
2529 * station pointer. The rest of the code will thus no longer
2530 * be able to find the station this way, and we don't rely
2531 * on further RCU synchronisation after the sta_state()
2532 * callback deleted the station.
2533 */
2534 mutex_lock(&mvm->mutex);
2535 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2536 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2537 ERR_PTR(-ENOENT));
2538
2539 mutex_unlock(&mvm->mutex);
2540 }
2541
2542 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2543 const u8 *bssid)
2544 {
2545 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2546 return;
2547
2548 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2549 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2550 return;
2551 }
2552
2553 if (!vif->p2p &&
2554 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2555 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2556 return;
2557 }
2558
2559 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2560 }
2561
2562 static void
2563 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2564 struct ieee80211_vif *vif, u8 *peer_addr,
2565 enum nl80211_tdls_operation action)
2566 {
2567 struct iwl_fw_dbg_trigger_tlv *trig;
2568 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2569
2570 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2571 return;
2572
2573 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2574 tdls_trig = (void *)trig->data;
2575 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2576 return;
2577
2578 if (!(tdls_trig->action_bitmap & BIT(action)))
2579 return;
2580
2581 if (tdls_trig->peer_mode &&
2582 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2583 return;
2584
2585 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2586 "TDLS event occurred, peer %pM, action %d",
2587 peer_addr, action);
2588 }
2589
2590 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2591 struct iwl_mvm_sta *mvm_sta)
2592 {
2593 struct iwl_mvm_tid_data *tid_data;
2594 struct sk_buff *skb;
2595 int i;
2596
2597 spin_lock_bh(&mvm_sta->lock);
2598 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2599 tid_data = &mvm_sta->tid_data[i];
2600
2601 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) {
2602 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2603
2604 /*
2605 * The first deferred frame should've stopped the MAC
2606 * queues, so we should never get a second deferred
2607 * frame for the RA/TID.
2608 */
2609 iwl_mvm_start_mac_queues(mvm, info->hw_queue);
2610 ieee80211_free_txskb(mvm->hw, skb);
2611 }
2612 }
2613 spin_unlock_bh(&mvm_sta->lock);
2614 }
2615
2616 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2617 struct ieee80211_vif *vif,
2618 struct ieee80211_sta *sta,
2619 enum ieee80211_sta_state old_state,
2620 enum ieee80211_sta_state new_state)
2621 {
2622 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2623 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2624 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2625 int ret;
2626
2627 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2628 sta->addr, old_state, new_state);
2629
2630 /* this would be a mac80211 bug ... but don't crash */
2631 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2632 return -EINVAL;
2633
2634 /* if a STA is being removed, reuse its ID */
2635 flush_work(&mvm->sta_drained_wk);
2636
2637 /*
2638 * If we are in a STA removal flow and in DQA mode:
2639 *
2640 * This is after the sync_rcu part, so the queues have already been
2641 * flushed. No more TXs on their way in mac80211's path, and no more in
2642 * the queues.
2643 * Also, we won't be getting any new TX frames for this station.
2644 * What we might have are deferred TX frames that need to be taken care
2645 * of.
2646 *
2647 * Drop any still-queued deferred-frame before removing the STA, and
2648 * make sure the worker is no longer handling frames for this STA.
2649 */
2650 if (old_state == IEEE80211_STA_NONE &&
2651 new_state == IEEE80211_STA_NOTEXIST &&
2652 iwl_mvm_is_dqa_supported(mvm)) {
2653 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2654 flush_work(&mvm->add_stream_wk);
2655
2656 /*
2657 * No need to make sure deferred TX indication is off since the
2658 * worker will already remove it if it was on
2659 */
2660 }
2661
2662 mutex_lock(&mvm->mutex);
2663 /* track whether or not the station is associated */
2664 mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC;
2665
2666 if (old_state == IEEE80211_STA_NOTEXIST &&
2667 new_state == IEEE80211_STA_NONE) {
2668 /*
2669 * Firmware bug - it'll crash if the beacon interval is less
2670 * than 16. We can't avoid connecting at all, so refuse the
2671 * station state change, this will cause mac80211 to abandon
2672 * attempts to connect to this AP, and eventually wpa_s will
2673 * blacklist the AP...
2674 */
2675 if (vif->type == NL80211_IFTYPE_STATION &&
2676 vif->bss_conf.beacon_int < 16) {
2677 IWL_ERR(mvm,
2678 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2679 sta->addr, vif->bss_conf.beacon_int);
2680 ret = -EINVAL;
2681 goto out_unlock;
2682 }
2683
2684 if (sta->tdls &&
2685 (vif->p2p ||
2686 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2687 IWL_MVM_TDLS_STA_COUNT ||
2688 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2689 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2690 ret = -EBUSY;
2691 goto out_unlock;
2692 }
2693
2694 ret = iwl_mvm_add_sta(mvm, vif, sta);
2695 if (sta->tdls && ret == 0) {
2696 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2697 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2698 NL80211_TDLS_SETUP);
2699 }
2700 } else if (old_state == IEEE80211_STA_NONE &&
2701 new_state == IEEE80211_STA_AUTH) {
2702 /*
2703 * EBS may be disabled due to previous failures reported by FW.
2704 * Reset EBS status here assuming environment has been changed.
2705 */
2706 mvm->last_ebs_successful = true;
2707 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2708 ret = 0;
2709 } else if (old_state == IEEE80211_STA_AUTH &&
2710 new_state == IEEE80211_STA_ASSOC) {
2711 if (vif->type == NL80211_IFTYPE_AP) {
2712 mvmvif->ap_assoc_sta_count++;
2713 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2714 }
2715
2716 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2717 true);
2718 ret = iwl_mvm_update_sta(mvm, vif, sta);
2719 } else if (old_state == IEEE80211_STA_ASSOC &&
2720 new_state == IEEE80211_STA_AUTHORIZED) {
2721
2722 /* we don't support TDLS during DCM */
2723 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2724 iwl_mvm_teardown_tdls_peers(mvm);
2725
2726 if (sta->tdls)
2727 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2728 NL80211_TDLS_ENABLE_LINK);
2729
2730 /* enable beacon filtering */
2731 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2732 ret = 0;
2733 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2734 new_state == IEEE80211_STA_ASSOC) {
2735 /* disable beacon filtering */
2736 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2737 ret = 0;
2738 } else if (old_state == IEEE80211_STA_ASSOC &&
2739 new_state == IEEE80211_STA_AUTH) {
2740 if (vif->type == NL80211_IFTYPE_AP) {
2741 mvmvif->ap_assoc_sta_count--;
2742 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2743 }
2744 ret = 0;
2745 } else if (old_state == IEEE80211_STA_AUTH &&
2746 new_state == IEEE80211_STA_NONE) {
2747 ret = 0;
2748 } else if (old_state == IEEE80211_STA_NONE &&
2749 new_state == IEEE80211_STA_NOTEXIST) {
2750 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2751 if (sta->tdls) {
2752 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2753 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2754 NL80211_TDLS_DISABLE_LINK);
2755 }
2756 } else {
2757 ret = -EIO;
2758 }
2759 out_unlock:
2760 mutex_unlock(&mvm->mutex);
2761
2762 if (sta->tdls && ret == 0) {
2763 if (old_state == IEEE80211_STA_NOTEXIST &&
2764 new_state == IEEE80211_STA_NONE)
2765 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2766 else if (old_state == IEEE80211_STA_NONE &&
2767 new_state == IEEE80211_STA_NOTEXIST)
2768 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2769 }
2770
2771 return ret;
2772 }
2773
2774 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2775 {
2776 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2777
2778 mvm->rts_threshold = value;
2779
2780 return 0;
2781 }
2782
2783 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2784 struct ieee80211_vif *vif,
2785 struct ieee80211_sta *sta, u32 changed)
2786 {
2787 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2788
2789 if (vif->type == NL80211_IFTYPE_STATION &&
2790 changed & IEEE80211_RC_NSS_CHANGED)
2791 iwl_mvm_sf_update(mvm, vif, false);
2792 }
2793
2794 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2795 struct ieee80211_vif *vif, u16 ac,
2796 const struct ieee80211_tx_queue_params *params)
2797 {
2798 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2799 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2800
2801 mvmvif->queue_params[ac] = *params;
2802
2803 /*
2804 * No need to update right away, we'll get BSS_CHANGED_QOS
2805 * The exception is P2P_DEVICE interface which needs immediate update.
2806 */
2807 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2808 int ret;
2809
2810 mutex_lock(&mvm->mutex);
2811 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2812 mutex_unlock(&mvm->mutex);
2813 return ret;
2814 }
2815 return 0;
2816 }
2817
2818 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2819 struct ieee80211_vif *vif)
2820 {
2821 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2822 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2823 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2824
2825 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2826 return;
2827
2828 /*
2829 * iwl_mvm_protect_session() reads directly from the device
2830 * (the system time), so make sure it is available.
2831 */
2832 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2833 return;
2834
2835 mutex_lock(&mvm->mutex);
2836 /* Try really hard to protect the session and hear a beacon */
2837 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2838 mutex_unlock(&mvm->mutex);
2839
2840 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2841 }
2842
2843 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2844 struct ieee80211_vif *vif,
2845 struct cfg80211_sched_scan_request *req,
2846 struct ieee80211_scan_ies *ies)
2847 {
2848 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2849
2850 int ret;
2851
2852 mutex_lock(&mvm->mutex);
2853
2854 if (!vif->bss_conf.idle) {
2855 ret = -EBUSY;
2856 goto out;
2857 }
2858
2859 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2860
2861 out:
2862 mutex_unlock(&mvm->mutex);
2863 return ret;
2864 }
2865
2866 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2867 struct ieee80211_vif *vif)
2868 {
2869 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2870 int ret;
2871
2872 mutex_lock(&mvm->mutex);
2873
2874 /* Due to a race condition, it's possible that mac80211 asks
2875 * us to stop a sched_scan when it's already stopped. This
2876 * can happen, for instance, if we stopped the scan ourselves,
2877 * called ieee80211_sched_scan_stopped() and the userspace called
2878 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2879 * could run. To handle this, simply return if the scan is
2880 * not running.
2881 */
2882 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2883 mutex_unlock(&mvm->mutex);
2884 return 0;
2885 }
2886
2887 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2888 mutex_unlock(&mvm->mutex);
2889 iwl_mvm_wait_for_async_handlers(mvm);
2890
2891 return ret;
2892 }
2893
2894 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2895 enum set_key_cmd cmd,
2896 struct ieee80211_vif *vif,
2897 struct ieee80211_sta *sta,
2898 struct ieee80211_key_conf *key)
2899 {
2900 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2901 struct iwl_mvm_sta *mvmsta;
2902 struct iwl_mvm_key_pn *ptk_pn;
2903 int keyidx = key->keyidx;
2904 int ret;
2905 u8 key_offset;
2906
2907 if (iwlwifi_mod_params.swcrypto) {
2908 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2909 return -EOPNOTSUPP;
2910 }
2911
2912 switch (key->cipher) {
2913 case WLAN_CIPHER_SUITE_TKIP:
2914 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2915 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2916 break;
2917 case WLAN_CIPHER_SUITE_CCMP:
2918 case WLAN_CIPHER_SUITE_GCMP:
2919 case WLAN_CIPHER_SUITE_GCMP_256:
2920 if (!iwl_mvm_has_new_tx_api(mvm))
2921 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2922 break;
2923 case WLAN_CIPHER_SUITE_AES_CMAC:
2924 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2925 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2926 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2927 break;
2928 case WLAN_CIPHER_SUITE_WEP40:
2929 case WLAN_CIPHER_SUITE_WEP104:
2930 /* For non-client mode, only use WEP keys for TX as we probably
2931 * don't have a station yet anyway and would then have to keep
2932 * track of the keys, linking them to each of the clients/peers
2933 * as they appear. For now, don't do that, for performance WEP
2934 * offload doesn't really matter much, but we need it for some
2935 * other offload features in client mode.
2936 */
2937 if (vif->type != NL80211_IFTYPE_STATION)
2938 return 0;
2939 break;
2940 default:
2941 /* currently FW supports only one optional cipher scheme */
2942 if (hw->n_cipher_schemes &&
2943 hw->cipher_schemes->cipher == key->cipher)
2944 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2945 else
2946 return -EOPNOTSUPP;
2947 }
2948
2949 mutex_lock(&mvm->mutex);
2950
2951 switch (cmd) {
2952 case SET_KEY:
2953 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2954 vif->type == NL80211_IFTYPE_AP) && !sta) {
2955 /*
2956 * GTK on AP interface is a TX-only key, return 0;
2957 * on IBSS they're per-station and because we're lazy
2958 * we don't support them for RX, so do the same.
2959 * CMAC/GMAC in AP/IBSS modes must be done in software.
2960 */
2961 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2962 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2963 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2964 ret = -EOPNOTSUPP;
2965 else
2966 ret = 0;
2967
2968 if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
2969 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
2970 !iwl_mvm_has_new_tx_api(mvm)) {
2971 key->hw_key_idx = STA_KEY_IDX_INVALID;
2972 break;
2973 }
2974 }
2975
2976 /* During FW restart, in order to restore the state as it was,
2977 * don't try to reprogram keys we previously failed for.
2978 */
2979 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2980 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2981 IWL_DEBUG_MAC80211(mvm,
2982 "skip invalid idx key programming during restart\n");
2983 ret = 0;
2984 break;
2985 }
2986
2987 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2988 sta && iwl_mvm_has_new_rx_api(mvm) &&
2989 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2990 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2991 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2992 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2993 struct ieee80211_key_seq seq;
2994 int tid, q;
2995
2996 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2997 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2998 ptk_pn = kzalloc(sizeof(*ptk_pn) +
2999 mvm->trans->num_rx_queues *
3000 sizeof(ptk_pn->q[0]),
3001 GFP_KERNEL);
3002 if (!ptk_pn) {
3003 ret = -ENOMEM;
3004 break;
3005 }
3006
3007 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
3008 ieee80211_get_key_rx_seq(key, tid, &seq);
3009 for (q = 0; q < mvm->trans->num_rx_queues; q++)
3010 memcpy(ptk_pn->q[q].pn[tid],
3011 seq.ccmp.pn,
3012 IEEE80211_CCMP_PN_LEN);
3013 }
3014
3015 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
3016 }
3017
3018 /* in HW restart reuse the index, otherwise request a new one */
3019 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3020 key_offset = key->hw_key_idx;
3021 else
3022 key_offset = STA_KEY_IDX_INVALID;
3023
3024 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3025 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
3026 if (ret) {
3027 IWL_WARN(mvm, "set key failed\n");
3028 /*
3029 * can't add key for RX, but we don't need it
3030 * in the device for TX so still return 0
3031 */
3032 key->hw_key_idx = STA_KEY_IDX_INVALID;
3033 ret = 0;
3034 }
3035
3036 break;
3037 case DISABLE_KEY:
3038 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3039 ret = 0;
3040 break;
3041 }
3042
3043 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
3044 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3045 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3046 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3047 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3048 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3049 ptk_pn = rcu_dereference_protected(
3050 mvmsta->ptk_pn[keyidx],
3051 lockdep_is_held(&mvm->mutex));
3052 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3053 if (ptk_pn)
3054 kfree_rcu(ptk_pn, rcu_head);
3055 }
3056
3057 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3058 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3059 break;
3060 default:
3061 ret = -EINVAL;
3062 }
3063
3064 mutex_unlock(&mvm->mutex);
3065 return ret;
3066 }
3067
3068 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3069 struct ieee80211_vif *vif,
3070 struct ieee80211_key_conf *keyconf,
3071 struct ieee80211_sta *sta,
3072 u32 iv32, u16 *phase1key)
3073 {
3074 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3075
3076 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3077 return;
3078
3079 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3080 }
3081
3082
3083 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3084 struct iwl_rx_packet *pkt, void *data)
3085 {
3086 struct iwl_mvm *mvm =
3087 container_of(notif_wait, struct iwl_mvm, notif_wait);
3088 struct iwl_hs20_roc_res *resp;
3089 int resp_len = iwl_rx_packet_payload_len(pkt);
3090 struct iwl_mvm_time_event_data *te_data = data;
3091
3092 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3093 return true;
3094
3095 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3096 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3097 return true;
3098 }
3099
3100 resp = (void *)pkt->data;
3101
3102 IWL_DEBUG_TE(mvm,
3103 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3104 resp->status, resp->event_unique_id);
3105
3106 te_data->uid = le32_to_cpu(resp->event_unique_id);
3107 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3108 te_data->uid);
3109
3110 spin_lock_bh(&mvm->time_event_lock);
3111 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3112 spin_unlock_bh(&mvm->time_event_lock);
3113
3114 return true;
3115 }
3116
3117 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3118 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3119 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3120 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3121 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3122 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3123 struct ieee80211_channel *channel,
3124 struct ieee80211_vif *vif,
3125 int duration)
3126 {
3127 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3128 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3129 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3130 static const u16 time_event_response[] = { HOT_SPOT_CMD };
3131 struct iwl_notification_wait wait_time_event;
3132 u32 dtim_interval = vif->bss_conf.dtim_period *
3133 vif->bss_conf.beacon_int;
3134 u32 req_dur, delay;
3135 struct iwl_hs20_roc_req aux_roc_req = {
3136 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3137 .id_and_color =
3138 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3139 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3140 /* Set the channel info data */
3141 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3142 PHY_BAND_24 : PHY_BAND_5,
3143 .channel_info.channel = channel->hw_value,
3144 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3145 /* Set the time and duration */
3146 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3147 };
3148
3149 delay = AUX_ROC_MIN_DELAY;
3150 req_dur = MSEC_TO_TU(duration);
3151
3152 /*
3153 * If we are associated we want the delay time to be at least one
3154 * dtim interval so that the FW can wait until after the DTIM and
3155 * then start the time event, this will potentially allow us to
3156 * remain off-channel for the max duration.
3157 * Since we want to use almost a whole dtim interval we would also
3158 * like the delay to be for 2-3 dtim intervals, in case there are
3159 * other time events with higher priority.
3160 */
3161 if (vif->bss_conf.assoc) {
3162 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3163 /* We cannot remain off-channel longer than the DTIM interval */
3164 if (dtim_interval <= req_dur) {
3165 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3166 if (req_dur <= AUX_ROC_MIN_DURATION)
3167 req_dur = dtim_interval -
3168 AUX_ROC_MIN_SAFETY_BUFFER;
3169 }
3170 }
3171
3172 aux_roc_req.duration = cpu_to_le32(req_dur);
3173 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3174
3175 IWL_DEBUG_TE(mvm,
3176 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3177 channel->hw_value, req_dur, duration, delay,
3178 dtim_interval);
3179 /* Set the node address */
3180 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3181
3182 lockdep_assert_held(&mvm->mutex);
3183
3184 spin_lock_bh(&mvm->time_event_lock);
3185
3186 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3187 spin_unlock_bh(&mvm->time_event_lock);
3188 return -EIO;
3189 }
3190
3191 te_data->vif = vif;
3192 te_data->duration = duration;
3193 te_data->id = HOT_SPOT_CMD;
3194
3195 spin_unlock_bh(&mvm->time_event_lock);
3196
3197 /*
3198 * Use a notification wait, which really just processes the
3199 * command response and doesn't wait for anything, in order
3200 * to be able to process the response and get the UID inside
3201 * the RX path. Using CMD_WANT_SKB doesn't work because it
3202 * stores the buffer and then wakes up this thread, by which
3203 * time another notification (that the time event started)
3204 * might already be processed unsuccessfully.
3205 */
3206 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3207 time_event_response,
3208 ARRAY_SIZE(time_event_response),
3209 iwl_mvm_rx_aux_roc, te_data);
3210
3211 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3212 &aux_roc_req);
3213
3214 if (res) {
3215 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3216 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3217 goto out_clear_te;
3218 }
3219
3220 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3221 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3222 /* should never fail */
3223 WARN_ON_ONCE(res);
3224
3225 if (res) {
3226 out_clear_te:
3227 spin_lock_bh(&mvm->time_event_lock);
3228 iwl_mvm_te_clear_data(mvm, te_data);
3229 spin_unlock_bh(&mvm->time_event_lock);
3230 }
3231
3232 return res;
3233 }
3234
3235 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3236 struct ieee80211_vif *vif,
3237 struct ieee80211_channel *channel,
3238 int duration,
3239 enum ieee80211_roc_type type)
3240 {
3241 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3242 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3243 struct cfg80211_chan_def chandef;
3244 struct iwl_mvm_phy_ctxt *phy_ctxt;
3245 int ret, i;
3246
3247 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3248 duration, type);
3249
3250 flush_work(&mvm->roc_done_wk);
3251
3252 mutex_lock(&mvm->mutex);
3253
3254 switch (vif->type) {
3255 case NL80211_IFTYPE_STATION:
3256 if (fw_has_capa(&mvm->fw->ucode_capa,
3257 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3258 /* Use aux roc framework (HS20) */
3259 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3260 vif, duration);
3261 goto out_unlock;
3262 }
3263 IWL_ERR(mvm, "hotspot not supported\n");
3264 ret = -EINVAL;
3265 goto out_unlock;
3266 case NL80211_IFTYPE_P2P_DEVICE:
3267 /* handle below */
3268 break;
3269 default:
3270 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3271 ret = -EINVAL;
3272 goto out_unlock;
3273 }
3274
3275 for (i = 0; i < NUM_PHY_CTX; i++) {
3276 phy_ctxt = &mvm->phy_ctxts[i];
3277 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3278 continue;
3279
3280 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3281 /*
3282 * Unbind the P2P_DEVICE from the current PHY context,
3283 * and if the PHY context is not used remove it.
3284 */
3285 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3286 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3287 goto out_unlock;
3288
3289 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3290
3291 /* Bind the P2P_DEVICE to the current PHY Context */
3292 mvmvif->phy_ctxt = phy_ctxt;
3293
3294 ret = iwl_mvm_binding_add_vif(mvm, vif);
3295 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3296 goto out_unlock;
3297
3298 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3299 goto schedule_time_event;
3300 }
3301 }
3302
3303 /* Need to update the PHY context only if the ROC channel changed */
3304 if (channel == mvmvif->phy_ctxt->channel)
3305 goto schedule_time_event;
3306
3307 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3308
3309 /*
3310 * Change the PHY context configuration as it is currently referenced
3311 * only by the P2P Device MAC
3312 */
3313 if (mvmvif->phy_ctxt->ref == 1) {
3314 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3315 &chandef, 1, 1);
3316 if (ret)
3317 goto out_unlock;
3318 } else {
3319 /*
3320 * The PHY context is shared with other MACs. Need to remove the
3321 * P2P Device from the binding, allocate an new PHY context and
3322 * create a new binding
3323 */
3324 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3325 if (!phy_ctxt) {
3326 ret = -ENOSPC;
3327 goto out_unlock;
3328 }
3329
3330 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3331 1, 1);
3332 if (ret) {
3333 IWL_ERR(mvm, "Failed to change PHY context\n");
3334 goto out_unlock;
3335 }
3336
3337 /* Unbind the P2P_DEVICE from the current PHY context */
3338 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3339 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3340 goto out_unlock;
3341
3342 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3343
3344 /* Bind the P2P_DEVICE to the new allocated PHY context */
3345 mvmvif->phy_ctxt = phy_ctxt;
3346
3347 ret = iwl_mvm_binding_add_vif(mvm, vif);
3348 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3349 goto out_unlock;
3350
3351 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3352 }
3353
3354 schedule_time_event:
3355 /* Schedule the time events */
3356 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3357
3358 out_unlock:
3359 mutex_unlock(&mvm->mutex);
3360 IWL_DEBUG_MAC80211(mvm, "leave\n");
3361 return ret;
3362 }
3363
3364 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3365 {
3366 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3367
3368 IWL_DEBUG_MAC80211(mvm, "enter\n");
3369
3370 mutex_lock(&mvm->mutex);
3371 iwl_mvm_stop_roc(mvm);
3372 mutex_unlock(&mvm->mutex);
3373
3374 IWL_DEBUG_MAC80211(mvm, "leave\n");
3375 return 0;
3376 }
3377
3378 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3379 struct ieee80211_chanctx_conf *ctx)
3380 {
3381 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3382 struct iwl_mvm_phy_ctxt *phy_ctxt;
3383 int ret;
3384
3385 lockdep_assert_held(&mvm->mutex);
3386
3387 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3388
3389 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3390 if (!phy_ctxt) {
3391 ret = -ENOSPC;
3392 goto out;
3393 }
3394
3395 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3396 ctx->rx_chains_static,
3397 ctx->rx_chains_dynamic);
3398 if (ret) {
3399 IWL_ERR(mvm, "Failed to add PHY context\n");
3400 goto out;
3401 }
3402
3403 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3404 *phy_ctxt_id = phy_ctxt->id;
3405 out:
3406 return ret;
3407 }
3408
3409 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3410 struct ieee80211_chanctx_conf *ctx)
3411 {
3412 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3413 int ret;
3414
3415 mutex_lock(&mvm->mutex);
3416 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3417 mutex_unlock(&mvm->mutex);
3418
3419 return ret;
3420 }
3421
3422 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3423 struct ieee80211_chanctx_conf *ctx)
3424 {
3425 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3426 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3427
3428 lockdep_assert_held(&mvm->mutex);
3429
3430 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3431 }
3432
3433 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3434 struct ieee80211_chanctx_conf *ctx)
3435 {
3436 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3437
3438 mutex_lock(&mvm->mutex);
3439 __iwl_mvm_remove_chanctx(mvm, ctx);
3440 mutex_unlock(&mvm->mutex);
3441 }
3442
3443 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3444 struct ieee80211_chanctx_conf *ctx,
3445 u32 changed)
3446 {
3447 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3448 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3449 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3450
3451 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3452 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3453 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3454 IEEE80211_CHANCTX_CHANGE_RADAR |
3455 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3456 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3457 phy_ctxt->ref, changed))
3458 return;
3459
3460 mutex_lock(&mvm->mutex);
3461 iwl_mvm_bt_coex_vif_change(mvm);
3462 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3463 ctx->rx_chains_static,
3464 ctx->rx_chains_dynamic);
3465 mutex_unlock(&mvm->mutex);
3466 }
3467
3468 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3469 struct ieee80211_vif *vif,
3470 struct ieee80211_chanctx_conf *ctx,
3471 bool switching_chanctx)
3472 {
3473 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3474 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3475 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3476 int ret;
3477
3478 lockdep_assert_held(&mvm->mutex);
3479
3480 mvmvif->phy_ctxt = phy_ctxt;
3481
3482 switch (vif->type) {
3483 case NL80211_IFTYPE_AP:
3484 /* only needed if we're switching chanctx (i.e. during CSA) */
3485 if (switching_chanctx) {
3486 mvmvif->ap_ibss_active = true;
3487 break;
3488 }
3489 case NL80211_IFTYPE_ADHOC:
3490 /*
3491 * The AP binding flow is handled as part of the start_ap flow
3492 * (in bss_info_changed), similarly for IBSS.
3493 */
3494 ret = 0;
3495 goto out;
3496 case NL80211_IFTYPE_STATION:
3497 break;
3498 case NL80211_IFTYPE_MONITOR:
3499 /* always disable PS when a monitor interface is active */
3500 mvmvif->ps_disabled = true;
3501 break;
3502 default:
3503 ret = -EINVAL;
3504 goto out;
3505 }
3506
3507 ret = iwl_mvm_binding_add_vif(mvm, vif);
3508 if (ret)
3509 goto out;
3510
3511 /*
3512 * Power state must be updated before quotas,
3513 * otherwise fw will complain.
3514 */
3515 iwl_mvm_power_update_mac(mvm);
3516
3517 /* Setting the quota at this stage is only required for monitor
3518 * interfaces. For the other types, the bss_info changed flow
3519 * will handle quota settings.
3520 */
3521 if (vif->type == NL80211_IFTYPE_MONITOR) {
3522 mvmvif->monitor_active = true;
3523 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3524 if (ret)
3525 goto out_remove_binding;
3526
3527 ret = iwl_mvm_add_snif_sta(mvm, vif);
3528 if (ret)
3529 goto out_remove_binding;
3530
3531 }
3532
3533 /* Handle binding during CSA */
3534 if (vif->type == NL80211_IFTYPE_AP) {
3535 iwl_mvm_update_quotas(mvm, false, NULL);
3536 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3537 }
3538
3539 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3540 u32 duration = 2 * vif->bss_conf.beacon_int;
3541
3542 /* iwl_mvm_protect_session() reads directly from the
3543 * device (the system time), so make sure it is
3544 * available.
3545 */
3546 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3547 if (ret)
3548 goto out_remove_binding;
3549
3550 /* Protect the session to make sure we hear the first
3551 * beacon on the new channel.
3552 */
3553 iwl_mvm_protect_session(mvm, vif, duration, duration,
3554 vif->bss_conf.beacon_int / 2,
3555 true);
3556
3557 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3558
3559 iwl_mvm_update_quotas(mvm, false, NULL);
3560 }
3561
3562 goto out;
3563
3564 out_remove_binding:
3565 iwl_mvm_binding_remove_vif(mvm, vif);
3566 iwl_mvm_power_update_mac(mvm);
3567 out:
3568 if (ret)
3569 mvmvif->phy_ctxt = NULL;
3570 return ret;
3571 }
3572 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3573 struct ieee80211_vif *vif,
3574 struct ieee80211_chanctx_conf *ctx)
3575 {
3576 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3577 int ret;
3578
3579 mutex_lock(&mvm->mutex);
3580 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3581 mutex_unlock(&mvm->mutex);
3582
3583 return ret;
3584 }
3585
3586 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3587 struct ieee80211_vif *vif,
3588 struct ieee80211_chanctx_conf *ctx,
3589 bool switching_chanctx)
3590 {
3591 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3592 struct ieee80211_vif *disabled_vif = NULL;
3593
3594 lockdep_assert_held(&mvm->mutex);
3595
3596 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3597
3598 switch (vif->type) {
3599 case NL80211_IFTYPE_ADHOC:
3600 goto out;
3601 case NL80211_IFTYPE_MONITOR:
3602 mvmvif->monitor_active = false;
3603 mvmvif->ps_disabled = false;
3604 iwl_mvm_rm_snif_sta(mvm, vif);
3605 break;
3606 case NL80211_IFTYPE_AP:
3607 /* This part is triggered only during CSA */
3608 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3609 goto out;
3610
3611 mvmvif->csa_countdown = false;
3612
3613 /* Set CS bit on all the stations */
3614 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3615
3616 /* Save blocked iface, the timeout is set on the next beacon */
3617 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3618
3619 mvmvif->ap_ibss_active = false;
3620 break;
3621 case NL80211_IFTYPE_STATION:
3622 if (!switching_chanctx)
3623 break;
3624
3625 disabled_vif = vif;
3626
3627 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3628 break;
3629 default:
3630 break;
3631 }
3632
3633 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3634 iwl_mvm_binding_remove_vif(mvm, vif);
3635
3636 out:
3637 mvmvif->phy_ctxt = NULL;
3638 iwl_mvm_power_update_mac(mvm);
3639 }
3640
3641 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3642 struct ieee80211_vif *vif,
3643 struct ieee80211_chanctx_conf *ctx)
3644 {
3645 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3646
3647 mutex_lock(&mvm->mutex);
3648 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3649 mutex_unlock(&mvm->mutex);
3650 }
3651
3652 static int
3653 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3654 struct ieee80211_vif_chanctx_switch *vifs)
3655 {
3656 int ret;
3657
3658 mutex_lock(&mvm->mutex);
3659 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3660 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3661
3662 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3663 if (ret) {
3664 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3665 goto out_reassign;
3666 }
3667
3668 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3669 true);
3670 if (ret) {
3671 IWL_ERR(mvm,
3672 "failed to assign new_ctx during channel switch\n");
3673 goto out_remove;
3674 }
3675
3676 /* we don't support TDLS during DCM - can be caused by channel switch */
3677 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3678 iwl_mvm_teardown_tdls_peers(mvm);
3679
3680 goto out;
3681
3682 out_remove:
3683 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3684
3685 out_reassign:
3686 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3687 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3688 goto out_restart;
3689 }
3690
3691 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3692 true)) {
3693 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3694 goto out_restart;
3695 }
3696
3697 goto out;
3698
3699 out_restart:
3700 /* things keep failing, better restart the hw */
3701 iwl_mvm_nic_restart(mvm, false);
3702
3703 out:
3704 mutex_unlock(&mvm->mutex);
3705
3706 return ret;
3707 }
3708
3709 static int
3710 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3711 struct ieee80211_vif_chanctx_switch *vifs)
3712 {
3713 int ret;
3714
3715 mutex_lock(&mvm->mutex);
3716 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3717
3718 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3719 true);
3720 if (ret) {
3721 IWL_ERR(mvm,
3722 "failed to assign new_ctx during channel switch\n");
3723 goto out_reassign;
3724 }
3725
3726 goto out;
3727
3728 out_reassign:
3729 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3730 true)) {
3731 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3732 goto out_restart;
3733 }
3734
3735 goto out;
3736
3737 out_restart:
3738 /* things keep failing, better restart the hw */
3739 iwl_mvm_nic_restart(mvm, false);
3740
3741 out:
3742 mutex_unlock(&mvm->mutex);
3743
3744 return ret;
3745 }
3746
3747 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3748 struct ieee80211_vif_chanctx_switch *vifs,
3749 int n_vifs,
3750 enum ieee80211_chanctx_switch_mode mode)
3751 {
3752 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3753 int ret;
3754
3755 /* we only support a single-vif right now */
3756 if (n_vifs > 1)
3757 return -EOPNOTSUPP;
3758
3759 switch (mode) {
3760 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3761 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3762 break;
3763 case CHANCTX_SWMODE_REASSIGN_VIF:
3764 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3765 break;
3766 default:
3767 ret = -EOPNOTSUPP;
3768 break;
3769 }
3770
3771 return ret;
3772 }
3773
3774 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
3775 {
3776 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3777
3778 return mvm->ibss_manager;
3779 }
3780
3781 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3782 struct ieee80211_sta *sta,
3783 bool set)
3784 {
3785 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3786 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3787
3788 if (!mvm_sta || !mvm_sta->vif) {
3789 IWL_ERR(mvm, "Station is not associated to a vif\n");
3790 return -EINVAL;
3791 }
3792
3793 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3794 }
3795
3796 #ifdef CONFIG_NL80211_TESTMODE
3797 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3798 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3799 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3800 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3801 };
3802
3803 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3804 struct ieee80211_vif *vif,
3805 void *data, int len)
3806 {
3807 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3808 int err;
3809 u32 noa_duration;
3810
3811 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
3812 NULL);
3813 if (err)
3814 return err;
3815
3816 if (!tb[IWL_MVM_TM_ATTR_CMD])
3817 return -EINVAL;
3818
3819 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3820 case IWL_MVM_TM_CMD_SET_NOA:
3821 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3822 !vif->bss_conf.enable_beacon ||
3823 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3824 return -EINVAL;
3825
3826 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3827 if (noa_duration >= vif->bss_conf.beacon_int)
3828 return -EINVAL;
3829
3830 mvm->noa_duration = noa_duration;
3831 mvm->noa_vif = vif;
3832
3833 return iwl_mvm_update_quotas(mvm, false, NULL);
3834 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3835 /* must be associated client vif - ignore authorized */
3836 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3837 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3838 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3839 return -EINVAL;
3840
3841 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3842 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3843 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3844 }
3845
3846 return -EOPNOTSUPP;
3847 }
3848
3849 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3850 struct ieee80211_vif *vif,
3851 void *data, int len)
3852 {
3853 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3854 int err;
3855
3856 mutex_lock(&mvm->mutex);
3857 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3858 mutex_unlock(&mvm->mutex);
3859
3860 return err;
3861 }
3862 #endif
3863
3864 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3865 struct ieee80211_vif *vif,
3866 struct ieee80211_channel_switch *chsw)
3867 {
3868 /* By implementing this operation, we prevent mac80211 from
3869 * starting its own channel switch timer, so that we can call
3870 * ieee80211_chswitch_done() ourselves at the right time
3871 * (which is when the absence time event starts).
3872 */
3873
3874 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3875 "dummy channel switch op\n");
3876 }
3877
3878 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3879 struct ieee80211_vif *vif,
3880 struct ieee80211_channel_switch *chsw)
3881 {
3882 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3883 struct ieee80211_vif *csa_vif;
3884 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3885 u32 apply_time;
3886 int ret;
3887
3888 mutex_lock(&mvm->mutex);
3889
3890 mvmvif->csa_failed = false;
3891
3892 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3893 chsw->chandef.center_freq1);
3894
3895 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3896
3897 switch (vif->type) {
3898 case NL80211_IFTYPE_AP:
3899 csa_vif =
3900 rcu_dereference_protected(mvm->csa_vif,
3901 lockdep_is_held(&mvm->mutex));
3902 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3903 "Another CSA is already in progress")) {
3904 ret = -EBUSY;
3905 goto out_unlock;
3906 }
3907
3908 /* we still didn't unblock tx. prevent new CS meanwhile */
3909 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
3910 lockdep_is_held(&mvm->mutex))) {
3911 ret = -EBUSY;
3912 goto out_unlock;
3913 }
3914
3915 rcu_assign_pointer(mvm->csa_vif, vif);
3916
3917 if (WARN_ONCE(mvmvif->csa_countdown,
3918 "Previous CSA countdown didn't complete")) {
3919 ret = -EBUSY;
3920 goto out_unlock;
3921 }
3922
3923 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
3924
3925 break;
3926 case NL80211_IFTYPE_STATION:
3927 if (mvmvif->lqm_active)
3928 iwl_mvm_send_lqm_cmd(vif,
3929 LQM_CMD_OPERATION_STOP_MEASUREMENT,
3930 0, 0);
3931
3932 /* Schedule the time event to a bit before beacon 1,
3933 * to make sure we're in the new channel when the
3934 * GO/AP arrives.
3935 */
3936 apply_time = chsw->device_timestamp +
3937 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3938 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3939
3940 if (chsw->block_tx)
3941 iwl_mvm_csa_client_absent(mvm, vif);
3942
3943 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3944 apply_time);
3945 if (mvmvif->bf_data.bf_enabled) {
3946 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3947 if (ret)
3948 goto out_unlock;
3949 }
3950
3951 break;
3952 default:
3953 break;
3954 }
3955
3956 mvmvif->ps_disabled = true;
3957
3958 ret = iwl_mvm_power_update_ps(mvm);
3959 if (ret)
3960 goto out_unlock;
3961
3962 /* we won't be on this channel any longer */
3963 iwl_mvm_teardown_tdls_peers(mvm);
3964
3965 out_unlock:
3966 mutex_unlock(&mvm->mutex);
3967
3968 return ret;
3969 }
3970
3971 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3972 struct ieee80211_vif *vif)
3973 {
3974 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3975 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3976 int ret;
3977
3978 mutex_lock(&mvm->mutex);
3979
3980 if (mvmvif->csa_failed) {
3981 mvmvif->csa_failed = false;
3982 ret = -EIO;
3983 goto out_unlock;
3984 }
3985
3986 if (vif->type == NL80211_IFTYPE_STATION) {
3987 struct iwl_mvm_sta *mvmsta;
3988
3989 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3990 mvmvif->ap_sta_id);
3991
3992 if (WARN_ON(!mvmsta)) {
3993 ret = -EIO;
3994 goto out_unlock;
3995 }
3996
3997 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3998
3999 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
4000
4001 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
4002 if (ret)
4003 goto out_unlock;
4004
4005 iwl_mvm_stop_session_protection(mvm, vif);
4006 }
4007
4008 mvmvif->ps_disabled = false;
4009
4010 ret = iwl_mvm_power_update_ps(mvm);
4011
4012 out_unlock:
4013 mutex_unlock(&mvm->mutex);
4014
4015 return ret;
4016 }
4017
4018 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
4019 struct ieee80211_vif *vif, u32 queues, bool drop)
4020 {
4021 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4022 struct iwl_mvm_vif *mvmvif;
4023 struct iwl_mvm_sta *mvmsta;
4024 struct ieee80211_sta *sta;
4025 int i;
4026 u32 msk = 0;
4027
4028 if (!vif || vif->type != NL80211_IFTYPE_STATION)
4029 return;
4030
4031 /* Make sure we're done with the deferred traffic before flushing */
4032 if (iwl_mvm_is_dqa_supported(mvm))
4033 flush_work(&mvm->add_stream_wk);
4034
4035 mutex_lock(&mvm->mutex);
4036 mvmvif = iwl_mvm_vif_from_mac80211(vif);
4037
4038 /* flush the AP-station and all TDLS peers */
4039 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4040 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4041 lockdep_is_held(&mvm->mutex));
4042 if (IS_ERR_OR_NULL(sta))
4043 continue;
4044
4045 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4046 if (mvmsta->vif != vif)
4047 continue;
4048
4049 /* make sure only TDLS peers or the AP are flushed */
4050 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4051
4052 if (drop) {
4053 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
4054 IWL_ERR(mvm, "flush request fail\n");
4055 } else {
4056 msk |= mvmsta->tfd_queue_msk;
4057 if (iwl_mvm_has_new_tx_api(mvm))
4058 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4059 }
4060 }
4061
4062 mutex_unlock(&mvm->mutex);
4063
4064 /* this can take a while, and we may need/want other operations
4065 * to succeed while doing this, so do it without the mutex held
4066 */
4067 if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4068 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4069 }
4070
4071 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4072 struct survey_info *survey)
4073 {
4074 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4075 int ret;
4076
4077 memset(survey, 0, sizeof(*survey));
4078
4079 /* only support global statistics right now */
4080 if (idx != 0)
4081 return -ENOENT;
4082
4083 if (!fw_has_capa(&mvm->fw->ucode_capa,
4084 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4085 return -ENOENT;
4086
4087 mutex_lock(&mvm->mutex);
4088
4089 if (iwl_mvm_firmware_running(mvm)) {
4090 ret = iwl_mvm_request_statistics(mvm, false);
4091 if (ret)
4092 goto out;
4093 }
4094
4095 survey->filled = SURVEY_INFO_TIME |
4096 SURVEY_INFO_TIME_RX |
4097 SURVEY_INFO_TIME_TX |
4098 SURVEY_INFO_TIME_SCAN;
4099 survey->time = mvm->accu_radio_stats.on_time_rf +
4100 mvm->radio_stats.on_time_rf;
4101 do_div(survey->time, USEC_PER_MSEC);
4102
4103 survey->time_rx = mvm->accu_radio_stats.rx_time +
4104 mvm->radio_stats.rx_time;
4105 do_div(survey->time_rx, USEC_PER_MSEC);
4106
4107 survey->time_tx = mvm->accu_radio_stats.tx_time +
4108 mvm->radio_stats.tx_time;
4109 do_div(survey->time_tx, USEC_PER_MSEC);
4110
4111 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4112 mvm->radio_stats.on_time_scan;
4113 do_div(survey->time_scan, USEC_PER_MSEC);
4114
4115 ret = 0;
4116 out:
4117 mutex_unlock(&mvm->mutex);
4118 return ret;
4119 }
4120
4121 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4122 struct ieee80211_vif *vif,
4123 struct ieee80211_sta *sta,
4124 struct station_info *sinfo)
4125 {
4126 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4127 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4128 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4129
4130 if (mvmsta->avg_energy) {
4131 sinfo->signal_avg = mvmsta->avg_energy;
4132 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
4133 }
4134
4135 if (!fw_has_capa(&mvm->fw->ucode_capa,
4136 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4137 return;
4138
4139 /* if beacon filtering isn't on mac80211 does it anyway */
4140 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4141 return;
4142
4143 if (!vif->bss_conf.assoc)
4144 return;
4145
4146 mutex_lock(&mvm->mutex);
4147
4148 if (mvmvif->ap_sta_id != mvmsta->sta_id)
4149 goto unlock;
4150
4151 if (iwl_mvm_request_statistics(mvm, false))
4152 goto unlock;
4153
4154 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4155 mvmvif->beacon_stats.accu_num_beacons;
4156 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
4157 if (mvmvif->beacon_stats.avg_signal) {
4158 /* firmware only reports a value after RXing a few beacons */
4159 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4160 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4161 }
4162 unlock:
4163 mutex_unlock(&mvm->mutex);
4164 }
4165
4166 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4167 struct ieee80211_vif *vif,
4168 const struct ieee80211_event *event)
4169 {
4170 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \
4171 do { \
4172 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \
4173 break; \
4174 iwl_mvm_fw_dbg_collect_trig(mvm, trig, _fmt); \
4175 } while (0)
4176
4177 struct iwl_fw_dbg_trigger_tlv *trig;
4178 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4179
4180 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4181 return;
4182
4183 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4184 trig_mlme = (void *)trig->data;
4185 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4186 return;
4187
4188 if (event->u.mlme.data == ASSOC_EVENT) {
4189 if (event->u.mlme.status == MLME_DENIED)
4190 CHECK_MLME_TRIGGER(stop_assoc_denied,
4191 "DENIED ASSOC: reason %d",
4192 event->u.mlme.reason);
4193 else if (event->u.mlme.status == MLME_TIMEOUT)
4194 CHECK_MLME_TRIGGER(stop_assoc_timeout,
4195 "ASSOC TIMEOUT");
4196 } else if (event->u.mlme.data == AUTH_EVENT) {
4197 if (event->u.mlme.status == MLME_DENIED)
4198 CHECK_MLME_TRIGGER(stop_auth_denied,
4199 "DENIED AUTH: reason %d",
4200 event->u.mlme.reason);
4201 else if (event->u.mlme.status == MLME_TIMEOUT)
4202 CHECK_MLME_TRIGGER(stop_auth_timeout,
4203 "AUTH TIMEOUT");
4204 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4205 CHECK_MLME_TRIGGER(stop_rx_deauth,
4206 "DEAUTH RX %d", event->u.mlme.reason);
4207 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4208 CHECK_MLME_TRIGGER(stop_tx_deauth,
4209 "DEAUTH TX %d", event->u.mlme.reason);
4210 }
4211 #undef CHECK_MLME_TRIGGER
4212 }
4213
4214 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4215 struct ieee80211_vif *vif,
4216 const struct ieee80211_event *event)
4217 {
4218 struct iwl_fw_dbg_trigger_tlv *trig;
4219 struct iwl_fw_dbg_trigger_ba *ba_trig;
4220
4221 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4222 return;
4223
4224 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4225 ba_trig = (void *)trig->data;
4226 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4227 return;
4228
4229 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4230 return;
4231
4232 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4233 "BAR received from %pM, tid %d, ssn %d",
4234 event->u.ba.sta->addr, event->u.ba.tid,
4235 event->u.ba.ssn);
4236 }
4237
4238 static void
4239 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4240 struct ieee80211_vif *vif,
4241 const struct ieee80211_event *event)
4242 {
4243 struct iwl_fw_dbg_trigger_tlv *trig;
4244 struct iwl_fw_dbg_trigger_ba *ba_trig;
4245
4246 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4247 return;
4248
4249 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4250 ba_trig = (void *)trig->data;
4251 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4252 return;
4253
4254 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4255 return;
4256
4257 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4258 "Frame from %pM timed out, tid %d",
4259 event->u.ba.sta->addr, event->u.ba.tid);
4260 }
4261
4262 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4263 struct ieee80211_vif *vif,
4264 const struct ieee80211_event *event)
4265 {
4266 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4267
4268 switch (event->type) {
4269 case MLME_EVENT:
4270 iwl_mvm_event_mlme_callback(mvm, vif, event);
4271 break;
4272 case BAR_RX_EVENT:
4273 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4274 break;
4275 case BA_FRAME_TIMEOUT:
4276 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4277 break;
4278 default:
4279 break;
4280 }
4281 }
4282
4283 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4284 struct iwl_mvm_internal_rxq_notif *notif,
4285 u32 size)
4286 {
4287 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4288 int ret;
4289
4290 lockdep_assert_held(&mvm->mutex);
4291
4292 /* TODO - remove a000 disablement when we have RXQ config API */
4293 if (!iwl_mvm_has_new_rx_api(mvm) || iwl_mvm_has_new_tx_api(mvm))
4294 return;
4295
4296 notif->cookie = mvm->queue_sync_cookie;
4297
4298 if (notif->sync)
4299 atomic_set(&mvm->queue_sync_counter,
4300 mvm->trans->num_rx_queues);
4301
4302 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4303 if (ret) {
4304 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4305 goto out;
4306 }
4307
4308 if (notif->sync) {
4309 ret = wait_event_timeout(mvm->rx_sync_waitq,
4310 atomic_read(&mvm->queue_sync_counter) == 0 ||
4311 iwl_mvm_is_radio_killed(mvm),
4312 HZ);
4313 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
4314 }
4315
4316 out:
4317 atomic_set(&mvm->queue_sync_counter, 0);
4318 mvm->queue_sync_cookie++;
4319 }
4320
4321 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4322 {
4323 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4324 struct iwl_mvm_internal_rxq_notif data = {
4325 .type = IWL_MVM_RXQ_EMPTY,
4326 .sync = 1,
4327 };
4328
4329 mutex_lock(&mvm->mutex);
4330 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4331 mutex_unlock(&mvm->mutex);
4332 }
4333
4334 const struct ieee80211_ops iwl_mvm_hw_ops = {
4335 .tx = iwl_mvm_mac_tx,
4336 .ampdu_action = iwl_mvm_mac_ampdu_action,
4337 .start = iwl_mvm_mac_start,
4338 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4339 .stop = iwl_mvm_mac_stop,
4340 .add_interface = iwl_mvm_mac_add_interface,
4341 .remove_interface = iwl_mvm_mac_remove_interface,
4342 .config = iwl_mvm_mac_config,
4343 .prepare_multicast = iwl_mvm_prepare_multicast,
4344 .configure_filter = iwl_mvm_configure_filter,
4345 .config_iface_filter = iwl_mvm_config_iface_filter,
4346 .bss_info_changed = iwl_mvm_bss_info_changed,
4347 .hw_scan = iwl_mvm_mac_hw_scan,
4348 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4349 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4350 .sta_state = iwl_mvm_mac_sta_state,
4351 .sta_notify = iwl_mvm_mac_sta_notify,
4352 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4353 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4354 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4355 .sta_rc_update = iwl_mvm_sta_rc_update,
4356 .conf_tx = iwl_mvm_mac_conf_tx,
4357 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4358 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4359 .flush = iwl_mvm_mac_flush,
4360 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4361 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4362 .set_key = iwl_mvm_mac_set_key,
4363 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4364 .remain_on_channel = iwl_mvm_roc,
4365 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4366 .add_chanctx = iwl_mvm_add_chanctx,
4367 .remove_chanctx = iwl_mvm_remove_chanctx,
4368 .change_chanctx = iwl_mvm_change_chanctx,
4369 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4370 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4371 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4372
4373 .start_ap = iwl_mvm_start_ap_ibss,
4374 .stop_ap = iwl_mvm_stop_ap_ibss,
4375 .join_ibss = iwl_mvm_start_ap_ibss,
4376 .leave_ibss = iwl_mvm_stop_ap_ibss,
4377
4378 .tx_last_beacon = iwl_mvm_tx_last_beacon,
4379
4380 .set_tim = iwl_mvm_set_tim,
4381
4382 .channel_switch = iwl_mvm_channel_switch,
4383 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4384 .post_channel_switch = iwl_mvm_post_channel_switch,
4385
4386 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4387 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4388 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4389
4390 .event_callback = iwl_mvm_mac_event_callback,
4391
4392 .sync_rx_queues = iwl_mvm_sync_rx_queues,
4393
4394 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4395
4396 #ifdef CONFIG_PM_SLEEP
4397 /* look at d3.c */
4398 .suspend = iwl_mvm_suspend,
4399 .resume = iwl_mvm_resume,
4400 .set_wakeup = iwl_mvm_set_wakeup,
4401 .set_rekey_data = iwl_mvm_set_rekey_data,
4402 #if IS_ENABLED(CONFIG_IPV6)
4403 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4404 #endif
4405 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4406 #endif
4407 .get_survey = iwl_mvm_mac_get_survey,
4408 .sta_statistics = iwl_mvm_mac_sta_statistics,
4409 };
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