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Merge remote-tracking branch 'asoc/topic/rockchip' into asoc-next
[mirror_ubuntu-focal-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
91 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
92 {
93 .max = 1,
94 .types = BIT(NL80211_IFTYPE_STATION),
95 },
96 {
97 .max = 1,
98 .types = BIT(NL80211_IFTYPE_AP) |
99 BIT(NL80211_IFTYPE_P2P_CLIENT) |
100 BIT(NL80211_IFTYPE_P2P_GO),
101 },
102 {
103 .max = 1,
104 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
105 },
106 };
107
108 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
109 {
110 .num_different_channels = 2,
111 .max_interfaces = 3,
112 .limits = iwl_mvm_limits,
113 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
114 },
115 };
116
117 #ifdef CONFIG_PM_SLEEP
118 static const struct nl80211_wowlan_tcp_data_token_feature
119 iwl_mvm_wowlan_tcp_token_feature = {
120 .min_len = 0,
121 .max_len = 255,
122 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
123 };
124
125 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
126 .tok = &iwl_mvm_wowlan_tcp_token_feature,
127 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
128 sizeof(struct ethhdr) -
129 sizeof(struct iphdr) -
130 sizeof(struct tcphdr),
131 .data_interval_max = 65535, /* __le16 in API */
132 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
133 sizeof(struct ethhdr) -
134 sizeof(struct iphdr) -
135 sizeof(struct tcphdr),
136 .seq = true,
137 };
138 #endif
139
140 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
141 /*
142 * Use the reserved field to indicate magic values.
143 * these values will only be used internally by the driver,
144 * and won't make it to the fw (reserved will be 0).
145 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
146 * be the vif's ip address. in case there is not a single
147 * ip address (0, or more than 1), this attribute will
148 * be skipped.
149 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
150 * the LSB bytes of the vif's mac address
151 */
152 enum {
153 BC_FILTER_MAGIC_NONE = 0,
154 BC_FILTER_MAGIC_IP,
155 BC_FILTER_MAGIC_MAC,
156 };
157
158 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
159 {
160 /* arp */
161 .discard = 0,
162 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
163 .attrs = {
164 {
165 /* frame type - arp, hw type - ethernet */
166 .offset_type =
167 BCAST_FILTER_OFFSET_PAYLOAD_START,
168 .offset = sizeof(rfc1042_header),
169 .val = cpu_to_be32(0x08060001),
170 .mask = cpu_to_be32(0xffffffff),
171 },
172 {
173 /* arp dest ip */
174 .offset_type =
175 BCAST_FILTER_OFFSET_PAYLOAD_START,
176 .offset = sizeof(rfc1042_header) + 2 +
177 sizeof(struct arphdr) +
178 ETH_ALEN + sizeof(__be32) +
179 ETH_ALEN,
180 .mask = cpu_to_be32(0xffffffff),
181 /* mark it as special field */
182 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
183 },
184 },
185 },
186 {
187 /* dhcp offer bcast */
188 .discard = 0,
189 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
190 .attrs = {
191 {
192 /* udp dest port - 68 (bootp client)*/
193 .offset_type = BCAST_FILTER_OFFSET_IP_END,
194 .offset = offsetof(struct udphdr, dest),
195 .val = cpu_to_be32(0x00440000),
196 .mask = cpu_to_be32(0xffff0000),
197 },
198 {
199 /* dhcp - lsb bytes of client hw address */
200 .offset_type = BCAST_FILTER_OFFSET_IP_END,
201 .offset = 38,
202 .mask = cpu_to_be32(0xffffffff),
203 /* mark it as special field */
204 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
205 },
206 },
207 },
208 /* last filter must be empty */
209 {},
210 };
211 #endif
212
213 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
214 {
215 if (!iwl_mvm_is_d0i3_supported(mvm))
216 return;
217
218 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
219 spin_lock_bh(&mvm->refs_lock);
220 mvm->refs[ref_type]++;
221 spin_unlock_bh(&mvm->refs_lock);
222 iwl_trans_ref(mvm->trans);
223 }
224
225 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
226 {
227 if (!iwl_mvm_is_d0i3_supported(mvm))
228 return;
229
230 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
231 spin_lock_bh(&mvm->refs_lock);
232 if (WARN_ON(!mvm->refs[ref_type])) {
233 spin_unlock_bh(&mvm->refs_lock);
234 return;
235 }
236 mvm->refs[ref_type]--;
237 spin_unlock_bh(&mvm->refs_lock);
238 iwl_trans_unref(mvm->trans);
239 }
240
241 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
242 enum iwl_mvm_ref_type except_ref)
243 {
244 int i, j;
245
246 if (!iwl_mvm_is_d0i3_supported(mvm))
247 return;
248
249 spin_lock_bh(&mvm->refs_lock);
250 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
251 if (except_ref == i || !mvm->refs[i])
252 continue;
253
254 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
255 i, mvm->refs[i]);
256 for (j = 0; j < mvm->refs[i]; j++)
257 iwl_trans_unref(mvm->trans);
258 mvm->refs[i] = 0;
259 }
260 spin_unlock_bh(&mvm->refs_lock);
261 }
262
263 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
264 {
265 int i;
266 bool taken = false;
267
268 if (!iwl_mvm_is_d0i3_supported(mvm))
269 return true;
270
271 spin_lock_bh(&mvm->refs_lock);
272 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
273 if (mvm->refs[i]) {
274 taken = true;
275 break;
276 }
277 }
278 spin_unlock_bh(&mvm->refs_lock);
279
280 return taken;
281 }
282
283 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
284 {
285 iwl_mvm_ref(mvm, ref_type);
286
287 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
288 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
289 HZ)) {
290 WARN_ON_ONCE(1);
291 iwl_mvm_unref(mvm, ref_type);
292 return -EIO;
293 }
294
295 return 0;
296 }
297
298 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
299 {
300 int i;
301
302 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
303 for (i = 0; i < NUM_PHY_CTX; i++) {
304 mvm->phy_ctxts[i].id = i;
305 mvm->phy_ctxts[i].ref = 0;
306 }
307 }
308
309 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
310 const char *alpha2,
311 enum iwl_mcc_source src_id,
312 bool *changed)
313 {
314 struct ieee80211_regdomain *regd = NULL;
315 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
316 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
317 struct iwl_mcc_update_resp *resp;
318
319 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
320
321 lockdep_assert_held(&mvm->mutex);
322
323 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
324 if (IS_ERR_OR_NULL(resp)) {
325 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
326 PTR_ERR_OR_ZERO(resp));
327 goto out;
328 }
329
330 if (changed)
331 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
332
333 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
334 __le32_to_cpu(resp->n_channels),
335 resp->channels,
336 __le16_to_cpu(resp->mcc));
337 /* Store the return source id */
338 src_id = resp->source_id;
339 kfree(resp);
340 if (IS_ERR_OR_NULL(regd)) {
341 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
342 PTR_ERR_OR_ZERO(regd));
343 goto out;
344 }
345
346 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
347 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
348 mvm->lar_regdom_set = true;
349 mvm->mcc_src = src_id;
350
351 out:
352 return regd;
353 }
354
355 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
356 {
357 bool changed;
358 struct ieee80211_regdomain *regd;
359
360 if (!iwl_mvm_is_lar_supported(mvm))
361 return;
362
363 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
364 if (!IS_ERR_OR_NULL(regd)) {
365 /* only update the regulatory core if changed */
366 if (changed)
367 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
368
369 kfree(regd);
370 }
371 }
372
373 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
374 bool *changed)
375 {
376 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
377 iwl_mvm_is_wifi_mcc_supported(mvm) ?
378 MCC_SOURCE_GET_CURRENT :
379 MCC_SOURCE_OLD_FW, changed);
380 }
381
382 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
383 {
384 enum iwl_mcc_source used_src;
385 struct ieee80211_regdomain *regd;
386 int ret;
387 bool changed;
388 const struct ieee80211_regdomain *r =
389 rtnl_dereference(mvm->hw->wiphy->regd);
390
391 if (!r)
392 return -ENOENT;
393
394 /* save the last source in case we overwrite it below */
395 used_src = mvm->mcc_src;
396 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
397 /* Notify the firmware we support wifi location updates */
398 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
399 if (!IS_ERR_OR_NULL(regd))
400 kfree(regd);
401 }
402
403 /* Now set our last stored MCC and source */
404 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
405 &changed);
406 if (IS_ERR_OR_NULL(regd))
407 return -EIO;
408
409 /* update cfg80211 if the regdomain was changed */
410 if (changed)
411 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
412 else
413 ret = 0;
414
415 kfree(regd);
416 return ret;
417 }
418
419 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
420 {
421 struct ieee80211_hw *hw = mvm->hw;
422 int num_mac, ret, i;
423 static const u32 mvm_ciphers[] = {
424 WLAN_CIPHER_SUITE_WEP40,
425 WLAN_CIPHER_SUITE_WEP104,
426 WLAN_CIPHER_SUITE_TKIP,
427 WLAN_CIPHER_SUITE_CCMP,
428 };
429
430 /* Tell mac80211 our characteristics */
431 ieee80211_hw_set(hw, SIGNAL_DBM);
432 ieee80211_hw_set(hw, SPECTRUM_MGMT);
433 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
434 ieee80211_hw_set(hw, QUEUE_CONTROL);
435 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
436 ieee80211_hw_set(hw, SUPPORTS_PS);
437 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
438 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
439 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
440 ieee80211_hw_set(hw, CONNECTION_MONITOR);
441 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
442 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
443 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
444 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
445 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
446 if (iwl_mvm_has_new_rx_api(mvm))
447 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
448
449 if (fw_has_capa(&mvm->fw->ucode_capa,
450 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) {
451 ieee80211_hw_set(hw, AP_LINK_PS);
452 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) {
453 /*
454 * we absolutely need this for the new TX API since that comes
455 * with many more queues than the current code can deal with
456 * for station powersave
457 */
458 return -EINVAL;
459 }
460
461 if (mvm->trans->num_rx_queues > 1)
462 ieee80211_hw_set(hw, USES_RSS);
463
464 if (mvm->trans->max_skb_frags)
465 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
466
467 hw->queues = IEEE80211_MAX_QUEUES;
468 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
469 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
470 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
471 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
472 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
473
474 hw->radiotap_timestamp.units_pos =
475 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
476 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
477 /* this is the case for CCK frames, it's better (only 8) for OFDM */
478 hw->radiotap_timestamp.accuracy = 22;
479
480 hw->rate_control_algorithm = "iwl-mvm-rs";
481 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
482 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
483
484 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
485 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
486 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
487 hw->wiphy->cipher_suites = mvm->ciphers;
488
489 if (iwl_mvm_has_new_rx_api(mvm)) {
490 mvm->ciphers[hw->wiphy->n_cipher_suites] =
491 WLAN_CIPHER_SUITE_GCMP;
492 hw->wiphy->n_cipher_suites++;
493 mvm->ciphers[hw->wiphy->n_cipher_suites] =
494 WLAN_CIPHER_SUITE_GCMP_256;
495 hw->wiphy->n_cipher_suites++;
496 }
497
498 /* Enable 11w if software crypto is not enabled (as the
499 * firmware will interpret some mgmt packets, so enabling it
500 * with software crypto isn't safe).
501 */
502 if (!iwlwifi_mod_params.swcrypto) {
503 ieee80211_hw_set(hw, MFP_CAPABLE);
504 mvm->ciphers[hw->wiphy->n_cipher_suites] =
505 WLAN_CIPHER_SUITE_AES_CMAC;
506 hw->wiphy->n_cipher_suites++;
507 if (iwl_mvm_has_new_rx_api(mvm)) {
508 mvm->ciphers[hw->wiphy->n_cipher_suites] =
509 WLAN_CIPHER_SUITE_BIP_GMAC_128;
510 hw->wiphy->n_cipher_suites++;
511 mvm->ciphers[hw->wiphy->n_cipher_suites] =
512 WLAN_CIPHER_SUITE_BIP_GMAC_256;
513 hw->wiphy->n_cipher_suites++;
514 }
515 }
516
517 /* currently FW API supports only one optional cipher scheme */
518 if (mvm->fw->cs[0].cipher) {
519 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
520 struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
521
522 mvm->hw->n_cipher_schemes = 1;
523
524 cs->cipher = le32_to_cpu(fwcs->cipher);
525 cs->iftype = BIT(NL80211_IFTYPE_STATION);
526 cs->hdr_len = fwcs->hdr_len;
527 cs->pn_len = fwcs->pn_len;
528 cs->pn_off = fwcs->pn_off;
529 cs->key_idx_off = fwcs->key_idx_off;
530 cs->key_idx_mask = fwcs->key_idx_mask;
531 cs->key_idx_shift = fwcs->key_idx_shift;
532 cs->mic_len = fwcs->mic_len;
533
534 mvm->hw->cipher_schemes = mvm->cs;
535 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
536 hw->wiphy->n_cipher_suites++;
537 }
538
539 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
540 hw->wiphy->features |=
541 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
542 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
543 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
544
545 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
546 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
547 hw->chanctx_data_size = sizeof(u16);
548
549 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
550 BIT(NL80211_IFTYPE_P2P_CLIENT) |
551 BIT(NL80211_IFTYPE_AP) |
552 BIT(NL80211_IFTYPE_P2P_GO) |
553 BIT(NL80211_IFTYPE_P2P_DEVICE) |
554 BIT(NL80211_IFTYPE_ADHOC);
555
556 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
557 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
558 if (iwl_mvm_is_lar_supported(mvm))
559 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
560 else
561 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
562 REGULATORY_DISABLE_BEACON_HINTS;
563
564 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
565 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
566
567 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
568 hw->wiphy->n_iface_combinations =
569 ARRAY_SIZE(iwl_mvm_iface_combinations);
570
571 hw->wiphy->max_remain_on_channel_duration = 10000;
572 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
573 /* we can compensate an offset of up to 3 channels = 15 MHz */
574 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
575
576 /* Extract MAC address */
577 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
578 hw->wiphy->addresses = mvm->addresses;
579 hw->wiphy->n_addresses = 1;
580
581 /* Extract additional MAC addresses if available */
582 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
583 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
584
585 for (i = 1; i < num_mac; i++) {
586 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
587 ETH_ALEN);
588 mvm->addresses[i].addr[5]++;
589 hw->wiphy->n_addresses++;
590 }
591
592 iwl_mvm_reset_phy_ctxts(mvm);
593
594 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
595
596 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
597
598 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
599 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
600 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
601
602 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
603 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
604 else
605 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
606
607 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
608 hw->wiphy->bands[NL80211_BAND_2GHZ] =
609 &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
610 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
611 hw->wiphy->bands[NL80211_BAND_5GHZ] =
612 &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
613
614 if (fw_has_capa(&mvm->fw->ucode_capa,
615 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
616 fw_has_api(&mvm->fw->ucode_capa,
617 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
618 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
619 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
620 }
621
622 hw->wiphy->hw_version = mvm->trans->hw_id;
623
624 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
625 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
626 else
627 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
628
629 hw->wiphy->max_sched_scan_reqs = 1;
630 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
631 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
632 /* we create the 802.11 header and zero length SSID IE. */
633 hw->wiphy->max_sched_scan_ie_len =
634 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
635 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
636 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
637
638 /*
639 * the firmware uses u8 for num of iterations, but 0xff is saved for
640 * infinite loop, so the maximum number of iterations is actually 254.
641 */
642 hw->wiphy->max_sched_scan_plan_iterations = 254;
643
644 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
645 NL80211_FEATURE_LOW_PRIORITY_SCAN |
646 NL80211_FEATURE_P2P_GO_OPPPS |
647 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
648 NL80211_FEATURE_DYNAMIC_SMPS |
649 NL80211_FEATURE_STATIC_SMPS |
650 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
651
652 if (fw_has_capa(&mvm->fw->ucode_capa,
653 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
654 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
655 if (fw_has_capa(&mvm->fw->ucode_capa,
656 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
657 hw->wiphy->features |= NL80211_FEATURE_QUIET;
658
659 if (fw_has_capa(&mvm->fw->ucode_capa,
660 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
661 hw->wiphy->features |=
662 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
663
664 if (fw_has_capa(&mvm->fw->ucode_capa,
665 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
666 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
667
668 if (fw_has_api(&mvm->fw->ucode_capa,
669 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
670 wiphy_ext_feature_set(hw->wiphy,
671 NL80211_EXT_FEATURE_SCAN_START_TIME);
672 wiphy_ext_feature_set(hw->wiphy,
673 NL80211_EXT_FEATURE_BSS_PARENT_TSF);
674 wiphy_ext_feature_set(hw->wiphy,
675 NL80211_EXT_FEATURE_SET_SCAN_DWELL);
676 }
677
678 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
679
680 #ifdef CONFIG_PM_SLEEP
681 if (iwl_mvm_is_d0i3_supported(mvm) &&
682 device_can_wakeup(mvm->trans->dev)) {
683 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
684 hw->wiphy->wowlan = &mvm->wowlan;
685 }
686
687 if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec &&
688 mvm->trans->ops->d3_suspend &&
689 mvm->trans->ops->d3_resume &&
690 device_can_wakeup(mvm->trans->dev)) {
691 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
692 WIPHY_WOWLAN_DISCONNECT |
693 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
694 WIPHY_WOWLAN_RFKILL_RELEASE |
695 WIPHY_WOWLAN_NET_DETECT;
696 if (!iwlwifi_mod_params.swcrypto)
697 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
698 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
699 WIPHY_WOWLAN_4WAY_HANDSHAKE;
700
701 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
702 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
703 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
704 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
705 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
706 hw->wiphy->wowlan = &mvm->wowlan;
707 }
708 #endif
709
710 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
711 /* assign default bcast filtering configuration */
712 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
713 #endif
714
715 ret = iwl_mvm_leds_init(mvm);
716 if (ret)
717 return ret;
718
719 if (fw_has_capa(&mvm->fw->ucode_capa,
720 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
721 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
722 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
723 ieee80211_hw_set(hw, TDLS_WIDER_BW);
724 }
725
726 if (fw_has_capa(&mvm->fw->ucode_capa,
727 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
728 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
729 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
730 }
731
732 hw->netdev_features |= mvm->cfg->features;
733 if (!iwl_mvm_is_csum_supported(mvm)) {
734 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
735 NETIF_F_RXCSUM);
736 /* We may support SW TX CSUM */
737 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
738 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
739 }
740
741 ret = ieee80211_register_hw(mvm->hw);
742 if (ret)
743 iwl_mvm_leds_exit(mvm);
744 mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
745
746 if (mvm->cfg->vht_mu_mimo_supported)
747 wiphy_ext_feature_set(hw->wiphy,
748 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
749
750 return ret;
751 }
752
753 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
754 struct ieee80211_sta *sta,
755 struct sk_buff *skb)
756 {
757 struct iwl_mvm_sta *mvmsta;
758 bool defer = false;
759
760 /*
761 * double check the IN_D0I3 flag both before and after
762 * taking the spinlock, in order to prevent taking
763 * the spinlock when not needed.
764 */
765 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
766 return false;
767
768 spin_lock(&mvm->d0i3_tx_lock);
769 /*
770 * testing the flag again ensures the skb dequeue
771 * loop (on d0i3 exit) hasn't run yet.
772 */
773 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
774 goto out;
775
776 mvmsta = iwl_mvm_sta_from_mac80211(sta);
777 if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
778 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
779 goto out;
780
781 __skb_queue_tail(&mvm->d0i3_tx, skb);
782 ieee80211_stop_queues(mvm->hw);
783
784 /* trigger wakeup */
785 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
786 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
787
788 defer = true;
789 out:
790 spin_unlock(&mvm->d0i3_tx_lock);
791 return defer;
792 }
793
794 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
795 struct ieee80211_tx_control *control,
796 struct sk_buff *skb)
797 {
798 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
799 struct ieee80211_sta *sta = control->sta;
800 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
801 struct ieee80211_hdr *hdr = (void *)skb->data;
802
803 if (iwl_mvm_is_radio_killed(mvm)) {
804 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
805 goto drop;
806 }
807
808 if (info->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
809 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
810 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
811 goto drop;
812
813 /* treat non-bufferable MMPDUs on AP interfaces as broadcast */
814 if ((info->control.vif->type == NL80211_IFTYPE_AP ||
815 info->control.vif->type == NL80211_IFTYPE_ADHOC) &&
816 ieee80211_is_mgmt(hdr->frame_control) &&
817 !ieee80211_is_bufferable_mmpdu(hdr->frame_control))
818 sta = NULL;
819
820 if (sta) {
821 if (iwl_mvm_defer_tx(mvm, sta, skb))
822 return;
823 if (iwl_mvm_tx_skb(mvm, skb, sta))
824 goto drop;
825 return;
826 }
827
828 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
829 goto drop;
830 return;
831 drop:
832 ieee80211_free_txskb(hw, skb);
833 }
834
835 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
836 {
837 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
838 return false;
839 return true;
840 }
841
842 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
843 {
844 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
845 return false;
846 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
847 return true;
848
849 /* enabled by default */
850 return true;
851 }
852
853 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
854 do { \
855 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
856 break; \
857 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \
858 } while (0)
859
860 static void
861 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
862 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
863 enum ieee80211_ampdu_mlme_action action)
864 {
865 struct iwl_fw_dbg_trigger_tlv *trig;
866 struct iwl_fw_dbg_trigger_ba *ba_trig;
867
868 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
869 return;
870
871 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
872 ba_trig = (void *)trig->data;
873
874 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
875 ieee80211_vif_to_wdev(vif), trig))
876 return;
877
878 switch (action) {
879 case IEEE80211_AMPDU_TX_OPERATIONAL: {
880 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
881 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
882
883 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
884 "TX AGG START: MAC %pM tid %d ssn %d\n",
885 sta->addr, tid, tid_data->ssn);
886 break;
887 }
888 case IEEE80211_AMPDU_TX_STOP_CONT:
889 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
890 "TX AGG STOP: MAC %pM tid %d\n",
891 sta->addr, tid);
892 break;
893 case IEEE80211_AMPDU_RX_START:
894 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
895 "RX AGG START: MAC %pM tid %d ssn %d\n",
896 sta->addr, tid, rx_ba_ssn);
897 break;
898 case IEEE80211_AMPDU_RX_STOP:
899 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
900 "RX AGG STOP: MAC %pM tid %d\n",
901 sta->addr, tid);
902 break;
903 default:
904 break;
905 }
906 }
907
908 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
909 struct ieee80211_vif *vif,
910 struct ieee80211_ampdu_params *params)
911 {
912 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
913 int ret;
914 bool tx_agg_ref = false;
915 struct ieee80211_sta *sta = params->sta;
916 enum ieee80211_ampdu_mlme_action action = params->action;
917 u16 tid = params->tid;
918 u16 *ssn = &params->ssn;
919 u8 buf_size = params->buf_size;
920 bool amsdu = params->amsdu;
921 u16 timeout = params->timeout;
922
923 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
924 sta->addr, tid, action);
925
926 if (!(mvm->nvm_data->sku_cap_11n_enable))
927 return -EACCES;
928
929 /* return from D0i3 before starting a new Tx aggregation */
930 switch (action) {
931 case IEEE80211_AMPDU_TX_START:
932 case IEEE80211_AMPDU_TX_STOP_CONT:
933 case IEEE80211_AMPDU_TX_STOP_FLUSH:
934 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
935 case IEEE80211_AMPDU_TX_OPERATIONAL:
936 /*
937 * for tx start, wait synchronously until D0i3 exit to
938 * get the correct sequence number for the tid.
939 * additionally, some other ampdu actions use direct
940 * target access, which is not handled automatically
941 * by the trans layer (unlike commands), so wait for
942 * d0i3 exit in these cases as well.
943 */
944 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
945 if (ret)
946 return ret;
947
948 tx_agg_ref = true;
949 break;
950 default:
951 break;
952 }
953
954 mutex_lock(&mvm->mutex);
955
956 switch (action) {
957 case IEEE80211_AMPDU_RX_START:
958 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
959 ret = -EINVAL;
960 break;
961 }
962 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
963 timeout);
964 break;
965 case IEEE80211_AMPDU_RX_STOP:
966 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
967 timeout);
968 break;
969 case IEEE80211_AMPDU_TX_START:
970 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
971 ret = -EINVAL;
972 break;
973 }
974 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
975 break;
976 case IEEE80211_AMPDU_TX_STOP_CONT:
977 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
978 break;
979 case IEEE80211_AMPDU_TX_STOP_FLUSH:
980 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
981 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
982 break;
983 case IEEE80211_AMPDU_TX_OPERATIONAL:
984 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
985 buf_size, amsdu);
986 break;
987 default:
988 WARN_ON_ONCE(1);
989 ret = -EINVAL;
990 break;
991 }
992
993 if (!ret) {
994 u16 rx_ba_ssn = 0;
995
996 if (action == IEEE80211_AMPDU_RX_START)
997 rx_ba_ssn = *ssn;
998
999 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
1000 rx_ba_ssn, action);
1001 }
1002 mutex_unlock(&mvm->mutex);
1003
1004 /*
1005 * If the tid is marked as started, we won't use it for offloaded
1006 * traffic on the next D0i3 entry. It's safe to unref.
1007 */
1008 if (tx_agg_ref)
1009 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
1010
1011 return ret;
1012 }
1013
1014 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1015 struct ieee80211_vif *vif)
1016 {
1017 struct iwl_mvm *mvm = data;
1018 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1019
1020 mvmvif->uploaded = false;
1021 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1022
1023 spin_lock_bh(&mvm->time_event_lock);
1024 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1025 spin_unlock_bh(&mvm->time_event_lock);
1026
1027 mvmvif->phy_ctxt = NULL;
1028 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1029 }
1030
1031 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1032 {
1033 /* clear the D3 reconfig, we only need it to avoid dumping a
1034 * firmware coredump on reconfiguration, we shouldn't do that
1035 * on D3->D0 transition
1036 */
1037 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1038 mvm->fwrt.dump.desc = &iwl_dump_desc_assert;
1039 iwl_fw_error_dump(&mvm->fwrt);
1040 }
1041
1042 /* cleanup all stale references (scan, roc), but keep the
1043 * ucode_down ref until reconfig is complete
1044 */
1045 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1046
1047 iwl_mvm_stop_device(mvm);
1048
1049 mvm->scan_status = 0;
1050 mvm->ps_disabled = false;
1051 mvm->calibrating = false;
1052
1053 /* just in case one was running */
1054 iwl_mvm_cleanup_roc_te(mvm);
1055 ieee80211_remain_on_channel_expired(mvm->hw);
1056
1057 /*
1058 * cleanup all interfaces, even inactive ones, as some might have
1059 * gone down during the HW restart
1060 */
1061 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1062
1063 mvm->p2p_device_vif = NULL;
1064 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1065
1066 iwl_mvm_reset_phy_ctxts(mvm);
1067 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1068 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1069 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1070 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1071
1072 ieee80211_wake_queues(mvm->hw);
1073
1074 /* clear any stale d0i3 state */
1075 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1076
1077 mvm->vif_count = 0;
1078 mvm->rx_ba_sessions = 0;
1079 mvm->fwrt.dump.conf = FW_DBG_INVALID;
1080 mvm->monitor_on = false;
1081
1082 /* keep statistics ticking */
1083 iwl_mvm_accu_radio_stats(mvm);
1084 }
1085
1086 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1087 {
1088 int ret;
1089
1090 lockdep_assert_held(&mvm->mutex);
1091
1092 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
1093 /*
1094 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
1095 * so later code will - from now on - see that we're doing it.
1096 */
1097 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1098 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1099 /* Clean up some internal and mac80211 state on restart */
1100 iwl_mvm_restart_cleanup(mvm);
1101 } else {
1102 /* Hold the reference to prevent runtime suspend while
1103 * the start procedure runs. It's a bit confusing
1104 * that the UCODE_DOWN reference is taken, but it just
1105 * means "UCODE is not UP yet". ( TODO: rename this
1106 * reference).
1107 */
1108 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1109 }
1110 ret = iwl_mvm_up(mvm);
1111
1112 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1113 /* Something went wrong - we need to finish some cleanup
1114 * that normally iwl_mvm_mac_restart_complete() below
1115 * would do.
1116 */
1117 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1118 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1119 }
1120
1121 return ret;
1122 }
1123
1124 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1125 {
1126 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1127 int ret;
1128
1129 /* Some hw restart cleanups must not hold the mutex */
1130 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1131 /*
1132 * Make sure we are out of d0i3. This is needed
1133 * to make sure the reference accounting is correct
1134 * (and there is no stale d0i3_exit_work).
1135 */
1136 wait_event_timeout(mvm->d0i3_exit_waitq,
1137 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1138 &mvm->status),
1139 HZ);
1140 }
1141
1142 mutex_lock(&mvm->mutex);
1143 ret = __iwl_mvm_mac_start(mvm);
1144 mutex_unlock(&mvm->mutex);
1145
1146 return ret;
1147 }
1148
1149 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1150 {
1151 int ret;
1152
1153 mutex_lock(&mvm->mutex);
1154
1155 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1156 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1157 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1158 if (ret)
1159 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1160 ret);
1161
1162 /* allow transport/FW low power modes */
1163 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1164
1165 /*
1166 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1167 * of packets the FW sent out, so we must reconnect.
1168 */
1169 iwl_mvm_teardown_tdls_peers(mvm);
1170
1171 mutex_unlock(&mvm->mutex);
1172 }
1173
1174 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1175 {
1176 if (iwl_mvm_is_d0i3_supported(mvm) &&
1177 iwl_mvm_enter_d0i3_on_suspend(mvm))
1178 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1179 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1180 &mvm->status),
1181 HZ),
1182 "D0i3 exit on resume timed out\n");
1183 }
1184
1185 static void
1186 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1187 enum ieee80211_reconfig_type reconfig_type)
1188 {
1189 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1190
1191 switch (reconfig_type) {
1192 case IEEE80211_RECONFIG_TYPE_RESTART:
1193 iwl_mvm_restart_complete(mvm);
1194 break;
1195 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1196 iwl_mvm_resume_complete(mvm);
1197 break;
1198 }
1199 }
1200
1201 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1202 {
1203 lockdep_assert_held(&mvm->mutex);
1204
1205 /* firmware counters are obviously reset now, but we shouldn't
1206 * partially track so also clear the fw_reset_accu counters.
1207 */
1208 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1209
1210 /* async_handlers_wk is now blocked */
1211
1212 /*
1213 * The work item could be running or queued if the
1214 * ROC time event stops just as we get here.
1215 */
1216 flush_work(&mvm->roc_done_wk);
1217
1218 iwl_mvm_stop_device(mvm);
1219
1220 iwl_mvm_async_handlers_purge(mvm);
1221 /* async_handlers_list is empty and will stay empty: HW is stopped */
1222
1223 /* the fw is stopped, the aux sta is dead: clean up driver state */
1224 iwl_mvm_del_aux_sta(mvm);
1225
1226 /*
1227 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1228 * won't be called in this case).
1229 * But make sure to cleanup interfaces that have gone down before/during
1230 * HW restart was requested.
1231 */
1232 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1233 ieee80211_iterate_interfaces(mvm->hw, 0,
1234 iwl_mvm_cleanup_iterator, mvm);
1235
1236 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1237 * make sure there's nothing left there and warn if any is found.
1238 */
1239 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1240 int i;
1241
1242 for (i = 0; i < mvm->max_scans; i++) {
1243 if (WARN_ONCE(mvm->scan_uid_status[i],
1244 "UMAC scan UID %d status was not cleaned\n",
1245 i))
1246 mvm->scan_uid_status[i] = 0;
1247 }
1248 }
1249 }
1250
1251 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1252 {
1253 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1254
1255 flush_work(&mvm->d0i3_exit_work);
1256 flush_work(&mvm->async_handlers_wk);
1257 flush_work(&mvm->add_stream_wk);
1258
1259 /*
1260 * Lock and clear the firmware running bit here already, so that
1261 * new commands coming in elsewhere, e.g. from debugfs, will not
1262 * be able to proceed. This is important here because one of those
1263 * debugfs files causes the firmware dump to be triggered, and if we
1264 * don't stop debugfs accesses before canceling that it could be
1265 * retriggered after we flush it but before we've cleared the bit.
1266 */
1267 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1268
1269 iwl_fw_cancel_dump(&mvm->fwrt);
1270 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1271 cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1272 iwl_fw_free_dump_desc(&mvm->fwrt);
1273
1274 mutex_lock(&mvm->mutex);
1275 __iwl_mvm_mac_stop(mvm);
1276 mutex_unlock(&mvm->mutex);
1277
1278 /*
1279 * The worker might have been waiting for the mutex, let it run and
1280 * discover that its list is now empty.
1281 */
1282 cancel_work_sync(&mvm->async_handlers_wk);
1283 }
1284
1285 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1286 {
1287 u16 i;
1288
1289 lockdep_assert_held(&mvm->mutex);
1290
1291 for (i = 0; i < NUM_PHY_CTX; i++)
1292 if (!mvm->phy_ctxts[i].ref)
1293 return &mvm->phy_ctxts[i];
1294
1295 IWL_ERR(mvm, "No available PHY context\n");
1296 return NULL;
1297 }
1298
1299 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1300 s16 tx_power)
1301 {
1302 struct iwl_dev_tx_power_cmd cmd = {
1303 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1304 .v3.mac_context_id =
1305 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1306 .v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1307 };
1308 int len = sizeof(cmd);
1309
1310 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1311 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1312
1313 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1314 len = sizeof(cmd.v3);
1315
1316 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1317 }
1318
1319 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1320 struct ieee80211_vif *vif)
1321 {
1322 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1323 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1324 int ret;
1325
1326 mvmvif->mvm = mvm;
1327
1328 /*
1329 * make sure D0i3 exit is completed, otherwise a target access
1330 * during tx queue configuration could be done when still in
1331 * D0i3 state.
1332 */
1333 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1334 if (ret)
1335 return ret;
1336
1337 /*
1338 * Not much to do here. The stack will not allow interface
1339 * types or combinations that we didn't advertise, so we
1340 * don't really have to check the types.
1341 */
1342
1343 mutex_lock(&mvm->mutex);
1344
1345 /* make sure that beacon statistics don't go backwards with FW reset */
1346 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1347 mvmvif->beacon_stats.accu_num_beacons +=
1348 mvmvif->beacon_stats.num_beacons;
1349
1350 /* Allocate resources for the MAC context, and add it to the fw */
1351 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1352 if (ret)
1353 goto out_unlock;
1354
1355 /* Counting number of interfaces is needed for legacy PM */
1356 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1357 mvm->vif_count++;
1358
1359 /*
1360 * The AP binding flow can be done only after the beacon
1361 * template is configured (which happens only in the mac80211
1362 * start_ap() flow), and adding the broadcast station can happen
1363 * only after the binding.
1364 * In addition, since modifying the MAC before adding a bcast
1365 * station is not allowed by the FW, delay the adding of MAC context to
1366 * the point where we can also add the bcast station.
1367 * In short: there's not much we can do at this point, other than
1368 * allocating resources :)
1369 */
1370 if (vif->type == NL80211_IFTYPE_AP ||
1371 vif->type == NL80211_IFTYPE_ADHOC) {
1372 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1373 if (ret) {
1374 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1375 goto out_release;
1376 }
1377
1378 /*
1379 * Only queue for this station is the mcast queue,
1380 * which shouldn't be in TFD mask anyway
1381 */
1382 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1383 0, vif->type,
1384 IWL_STA_MULTICAST);
1385 if (ret)
1386 goto out_release;
1387
1388 iwl_mvm_vif_dbgfs_register(mvm, vif);
1389 goto out_unlock;
1390 }
1391
1392 mvmvif->features |= hw->netdev_features;
1393
1394 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1395 if (ret)
1396 goto out_release;
1397
1398 ret = iwl_mvm_power_update_mac(mvm);
1399 if (ret)
1400 goto out_remove_mac;
1401
1402 /* beacon filtering */
1403 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1404 if (ret)
1405 goto out_remove_mac;
1406
1407 if (!mvm->bf_allowed_vif &&
1408 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1409 mvm->bf_allowed_vif = mvmvif;
1410 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1411 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1412 }
1413
1414 /*
1415 * P2P_DEVICE interface does not have a channel context assigned to it,
1416 * so a dedicated PHY context is allocated to it and the corresponding
1417 * MAC context is bound to it at this stage.
1418 */
1419 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1420
1421 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1422 if (!mvmvif->phy_ctxt) {
1423 ret = -ENOSPC;
1424 goto out_free_bf;
1425 }
1426
1427 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1428 ret = iwl_mvm_binding_add_vif(mvm, vif);
1429 if (ret)
1430 goto out_unref_phy;
1431
1432 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif);
1433 if (ret)
1434 goto out_unbind;
1435
1436 /* Save a pointer to p2p device vif, so it can later be used to
1437 * update the p2p device MAC when a GO is started/stopped */
1438 mvm->p2p_device_vif = vif;
1439 }
1440
1441 if (vif->type == NL80211_IFTYPE_MONITOR)
1442 mvm->monitor_on = true;
1443
1444 iwl_mvm_vif_dbgfs_register(mvm, vif);
1445 goto out_unlock;
1446
1447 out_unbind:
1448 iwl_mvm_binding_remove_vif(mvm, vif);
1449 out_unref_phy:
1450 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1451 out_free_bf:
1452 if (mvm->bf_allowed_vif == mvmvif) {
1453 mvm->bf_allowed_vif = NULL;
1454 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1455 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1456 }
1457 out_remove_mac:
1458 mvmvif->phy_ctxt = NULL;
1459 iwl_mvm_mac_ctxt_remove(mvm, vif);
1460 out_release:
1461 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1462 mvm->vif_count--;
1463 out_unlock:
1464 mutex_unlock(&mvm->mutex);
1465
1466 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1467
1468 return ret;
1469 }
1470
1471 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1472 struct ieee80211_vif *vif)
1473 {
1474 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1475 /*
1476 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1477 * We assume here that all the packets sent to the OFFCHANNEL
1478 * queue are sent in ROC session.
1479 */
1480 flush_work(&mvm->roc_done_wk);
1481 }
1482 }
1483
1484 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1485 struct ieee80211_vif *vif)
1486 {
1487 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1488 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1489
1490 iwl_mvm_prepare_mac_removal(mvm, vif);
1491
1492 mutex_lock(&mvm->mutex);
1493
1494 if (mvm->bf_allowed_vif == mvmvif) {
1495 mvm->bf_allowed_vif = NULL;
1496 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1497 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1498 }
1499
1500 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1501
1502 /*
1503 * For AP/GO interface, the tear down of the resources allocated to the
1504 * interface is be handled as part of the stop_ap flow.
1505 */
1506 if (vif->type == NL80211_IFTYPE_AP ||
1507 vif->type == NL80211_IFTYPE_ADHOC) {
1508 #ifdef CONFIG_NL80211_TESTMODE
1509 if (vif == mvm->noa_vif) {
1510 mvm->noa_vif = NULL;
1511 mvm->noa_duration = 0;
1512 }
1513 #endif
1514 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1515 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1516 goto out_release;
1517 }
1518
1519 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1520 mvm->p2p_device_vif = NULL;
1521 iwl_mvm_rm_p2p_bcast_sta(mvm, vif);
1522 iwl_mvm_binding_remove_vif(mvm, vif);
1523 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1524 mvmvif->phy_ctxt = NULL;
1525 }
1526
1527 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1528 mvm->vif_count--;
1529
1530 iwl_mvm_power_update_mac(mvm);
1531 iwl_mvm_mac_ctxt_remove(mvm, vif);
1532
1533 if (vif->type == NL80211_IFTYPE_MONITOR)
1534 mvm->monitor_on = false;
1535
1536 out_release:
1537 mutex_unlock(&mvm->mutex);
1538 }
1539
1540 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1541 {
1542 return 0;
1543 }
1544
1545 struct iwl_mvm_mc_iter_data {
1546 struct iwl_mvm *mvm;
1547 int port_id;
1548 };
1549
1550 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1551 struct ieee80211_vif *vif)
1552 {
1553 struct iwl_mvm_mc_iter_data *data = _data;
1554 struct iwl_mvm *mvm = data->mvm;
1555 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1556 struct iwl_host_cmd hcmd = {
1557 .id = MCAST_FILTER_CMD,
1558 .flags = CMD_ASYNC,
1559 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1560 };
1561 int ret, len;
1562
1563 /* if we don't have free ports, mcast frames will be dropped */
1564 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1565 return;
1566
1567 if (vif->type != NL80211_IFTYPE_STATION ||
1568 !vif->bss_conf.assoc)
1569 return;
1570
1571 cmd->port_id = data->port_id++;
1572 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1573 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1574
1575 hcmd.len[0] = len;
1576 hcmd.data[0] = cmd;
1577
1578 ret = iwl_mvm_send_cmd(mvm, &hcmd);
1579 if (ret)
1580 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1581 }
1582
1583 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1584 {
1585 struct iwl_mvm_mc_iter_data iter_data = {
1586 .mvm = mvm,
1587 };
1588
1589 lockdep_assert_held(&mvm->mutex);
1590
1591 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1592 return;
1593
1594 ieee80211_iterate_active_interfaces_atomic(
1595 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1596 iwl_mvm_mc_iface_iterator, &iter_data);
1597 }
1598
1599 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1600 struct netdev_hw_addr_list *mc_list)
1601 {
1602 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1603 struct iwl_mcast_filter_cmd *cmd;
1604 struct netdev_hw_addr *addr;
1605 int addr_count;
1606 bool pass_all;
1607 int len;
1608
1609 addr_count = netdev_hw_addr_list_count(mc_list);
1610 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1611 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1612 if (pass_all)
1613 addr_count = 0;
1614
1615 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1616 cmd = kzalloc(len, GFP_ATOMIC);
1617 if (!cmd)
1618 return 0;
1619
1620 if (pass_all) {
1621 cmd->pass_all = 1;
1622 return (u64)(unsigned long)cmd;
1623 }
1624
1625 netdev_hw_addr_list_for_each(addr, mc_list) {
1626 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1627 cmd->count, addr->addr);
1628 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1629 addr->addr, ETH_ALEN);
1630 cmd->count++;
1631 }
1632
1633 return (u64)(unsigned long)cmd;
1634 }
1635
1636 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1637 unsigned int changed_flags,
1638 unsigned int *total_flags,
1639 u64 multicast)
1640 {
1641 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1642 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1643
1644 mutex_lock(&mvm->mutex);
1645
1646 /* replace previous configuration */
1647 kfree(mvm->mcast_filter_cmd);
1648 mvm->mcast_filter_cmd = cmd;
1649
1650 if (!cmd)
1651 goto out;
1652
1653 if (changed_flags & FIF_ALLMULTI)
1654 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);
1655
1656 if (cmd->pass_all)
1657 cmd->count = 0;
1658
1659 iwl_mvm_recalc_multicast(mvm);
1660 out:
1661 mutex_unlock(&mvm->mutex);
1662 *total_flags = 0;
1663 }
1664
1665 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1666 struct ieee80211_vif *vif,
1667 unsigned int filter_flags,
1668 unsigned int changed_flags)
1669 {
1670 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1671
1672 /* We support only filter for probe requests */
1673 if (!(changed_flags & FIF_PROBE_REQ))
1674 return;
1675
1676 /* Supported only for p2p client interfaces */
1677 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1678 !vif->p2p)
1679 return;
1680
1681 mutex_lock(&mvm->mutex);
1682 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1683 mutex_unlock(&mvm->mutex);
1684 }
1685
1686 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1687 struct iwl_bcast_iter_data {
1688 struct iwl_mvm *mvm;
1689 struct iwl_bcast_filter_cmd *cmd;
1690 u8 current_filter;
1691 };
1692
1693 static void
1694 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1695 const struct iwl_fw_bcast_filter *in_filter,
1696 struct iwl_fw_bcast_filter *out_filter)
1697 {
1698 struct iwl_fw_bcast_filter_attr *attr;
1699 int i;
1700
1701 memcpy(out_filter, in_filter, sizeof(*out_filter));
1702
1703 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1704 attr = &out_filter->attrs[i];
1705
1706 if (!attr->mask)
1707 break;
1708
1709 switch (attr->reserved1) {
1710 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1711 if (vif->bss_conf.arp_addr_cnt != 1) {
1712 attr->mask = 0;
1713 continue;
1714 }
1715
1716 attr->val = vif->bss_conf.arp_addr_list[0];
1717 break;
1718 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1719 attr->val = *(__be32 *)&vif->addr[2];
1720 break;
1721 default:
1722 break;
1723 }
1724 attr->reserved1 = 0;
1725 out_filter->num_attrs++;
1726 }
1727 }
1728
1729 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1730 struct ieee80211_vif *vif)
1731 {
1732 struct iwl_bcast_iter_data *data = _data;
1733 struct iwl_mvm *mvm = data->mvm;
1734 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1735 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1736 struct iwl_fw_bcast_mac *bcast_mac;
1737 int i;
1738
1739 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1740 return;
1741
1742 bcast_mac = &cmd->macs[mvmvif->id];
1743
1744 /*
1745 * enable filtering only for associated stations, but not for P2P
1746 * Clients
1747 */
1748 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1749 !vif->bss_conf.assoc)
1750 return;
1751
1752 bcast_mac->default_discard = 1;
1753
1754 /* copy all configured filters */
1755 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1756 /*
1757 * Make sure we don't exceed our filters limit.
1758 * if there is still a valid filter to be configured,
1759 * be on the safe side and just allow bcast for this mac.
1760 */
1761 if (WARN_ON_ONCE(data->current_filter >=
1762 ARRAY_SIZE(cmd->filters))) {
1763 bcast_mac->default_discard = 0;
1764 bcast_mac->attached_filters = 0;
1765 break;
1766 }
1767
1768 iwl_mvm_set_bcast_filter(vif,
1769 &mvm->bcast_filters[i],
1770 &cmd->filters[data->current_filter]);
1771
1772 /* skip current filter if it contains no attributes */
1773 if (!cmd->filters[data->current_filter].num_attrs)
1774 continue;
1775
1776 /* attach the filter to current mac */
1777 bcast_mac->attached_filters |=
1778 cpu_to_le16(BIT(data->current_filter));
1779
1780 data->current_filter++;
1781 }
1782 }
1783
1784 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1785 struct iwl_bcast_filter_cmd *cmd)
1786 {
1787 struct iwl_bcast_iter_data iter_data = {
1788 .mvm = mvm,
1789 .cmd = cmd,
1790 };
1791
1792 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1793 return false;
1794
1795 memset(cmd, 0, sizeof(*cmd));
1796 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1797 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1798
1799 #ifdef CONFIG_IWLWIFI_DEBUGFS
1800 /* use debugfs filters/macs if override is configured */
1801 if (mvm->dbgfs_bcast_filtering.override) {
1802 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1803 sizeof(cmd->filters));
1804 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1805 sizeof(cmd->macs));
1806 return true;
1807 }
1808 #endif
1809
1810 /* if no filters are configured, do nothing */
1811 if (!mvm->bcast_filters)
1812 return false;
1813
1814 /* configure and attach these filters for each associated sta vif */
1815 ieee80211_iterate_active_interfaces(
1816 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1817 iwl_mvm_bcast_filter_iterator, &iter_data);
1818
1819 return true;
1820 }
1821
1822 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1823 {
1824 struct iwl_bcast_filter_cmd cmd;
1825
1826 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1827 return 0;
1828
1829 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1830 return 0;
1831
1832 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1833 sizeof(cmd), &cmd);
1834 }
1835 #else
1836 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1837 {
1838 return 0;
1839 }
1840 #endif
1841
1842 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1843 struct ieee80211_vif *vif)
1844 {
1845 struct iwl_mu_group_mgmt_cmd cmd = {};
1846
1847 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1848 WLAN_MEMBERSHIP_LEN);
1849 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1850 WLAN_USER_POSITION_LEN);
1851
1852 return iwl_mvm_send_cmd_pdu(mvm,
1853 WIDE_ID(DATA_PATH_GROUP,
1854 UPDATE_MU_GROUPS_CMD),
1855 0, sizeof(cmd), &cmd);
1856 }
1857
1858 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1859 struct ieee80211_vif *vif)
1860 {
1861 if (vif->mu_mimo_owner) {
1862 struct iwl_mu_group_mgmt_notif *notif = _data;
1863
1864 /*
1865 * MU-MIMO Group Id action frame is little endian. We treat
1866 * the data received from firmware as if it came from the
1867 * action frame, so no conversion is needed.
1868 */
1869 ieee80211_update_mu_groups(vif,
1870 (u8 *)&notif->membership_status,
1871 (u8 *)&notif->user_position);
1872 }
1873 }
1874
1875 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1876 struct iwl_rx_cmd_buffer *rxb)
1877 {
1878 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1879 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1880
1881 ieee80211_iterate_active_interfaces_atomic(
1882 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1883 iwl_mvm_mu_mimo_iface_iterator, notif);
1884 }
1885
1886 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1887 struct ieee80211_vif *vif,
1888 struct ieee80211_bss_conf *bss_conf,
1889 u32 changes)
1890 {
1891 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1892 int ret;
1893
1894 /*
1895 * Re-calculate the tsf id, as the master-slave relations depend on the
1896 * beacon interval, which was not known when the station interface was
1897 * added.
1898 */
1899 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1900 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1901
1902 if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1903 mvmvif->lqm_active)
1904 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1905 0, 0);
1906
1907 /*
1908 * If we're not associated yet, take the (new) BSSID before associating
1909 * so the firmware knows. If we're already associated, then use the old
1910 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1911 * branch for disassociation below.
1912 */
1913 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1914 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1915
1916 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1917 if (ret)
1918 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1919
1920 /* after sending it once, adopt mac80211 data */
1921 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1922 mvmvif->associated = bss_conf->assoc;
1923
1924 if (changes & BSS_CHANGED_ASSOC) {
1925 if (bss_conf->assoc) {
1926 /* clear statistics to get clean beacon counter */
1927 iwl_mvm_request_statistics(mvm, true);
1928 memset(&mvmvif->beacon_stats, 0,
1929 sizeof(mvmvif->beacon_stats));
1930
1931 /* add quota for this interface */
1932 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1933 if (ret) {
1934 IWL_ERR(mvm, "failed to update quotas\n");
1935 return;
1936 }
1937
1938 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1939 &mvm->status)) {
1940 /*
1941 * If we're restarting then the firmware will
1942 * obviously have lost synchronisation with
1943 * the AP. It will attempt to synchronise by
1944 * itself, but we can make it more reliable by
1945 * scheduling a session protection time event.
1946 *
1947 * The firmware needs to receive a beacon to
1948 * catch up with synchronisation, use 110% of
1949 * the beacon interval.
1950 *
1951 * Set a large maximum delay to allow for more
1952 * than a single interface.
1953 */
1954 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1955 iwl_mvm_protect_session(mvm, vif, dur, dur,
1956 5 * dur, false);
1957 }
1958
1959 iwl_mvm_sf_update(mvm, vif, false);
1960 iwl_mvm_power_vif_assoc(mvm, vif);
1961 if (vif->p2p) {
1962 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1963 iwl_mvm_update_smps(mvm, vif,
1964 IWL_MVM_SMPS_REQ_PROT,
1965 IEEE80211_SMPS_DYNAMIC);
1966 }
1967 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
1968 /*
1969 * If update fails - SF might be running in associated
1970 * mode while disassociated - which is forbidden.
1971 */
1972 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1973 "Failed to update SF upon disassociation\n");
1974
1975 /*
1976 * If we get an assert during the connection (after the
1977 * station has been added, but before the vif is set
1978 * to associated), mac80211 will re-add the station and
1979 * then configure the vif. Since the vif is not
1980 * associated, we would remove the station here and
1981 * this would fail the recovery.
1982 */
1983 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1984 &mvm->status)) {
1985 /*
1986 * Remove AP station now that
1987 * the MAC is unassoc
1988 */
1989 ret = iwl_mvm_rm_sta_id(mvm, vif,
1990 mvmvif->ap_sta_id);
1991 if (ret)
1992 IWL_ERR(mvm,
1993 "failed to remove AP station\n");
1994
1995 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1996 mvm->d0i3_ap_sta_id =
1997 IWL_MVM_INVALID_STA;
1998 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1999 }
2000
2001 /* remove quota for this interface */
2002 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2003 if (ret)
2004 IWL_ERR(mvm, "failed to update quotas\n");
2005
2006 if (vif->p2p)
2007 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2008
2009 /* this will take the cleared BSSID from bss_conf */
2010 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2011 if (ret)
2012 IWL_ERR(mvm,
2013 "failed to update MAC %pM (clear after unassoc)\n",
2014 vif->addr);
2015 }
2016
2017 /*
2018 * The firmware tracks the MU-MIMO group on its own.
2019 * However, on HW restart we should restore this data.
2020 */
2021 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2022 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2023 ret = iwl_mvm_update_mu_groups(mvm, vif);
2024 if (ret)
2025 IWL_ERR(mvm,
2026 "failed to update VHT MU_MIMO groups\n");
2027 }
2028
2029 iwl_mvm_recalc_multicast(mvm);
2030 iwl_mvm_configure_bcast_filter(mvm);
2031
2032 /* reset rssi values */
2033 mvmvif->bf_data.ave_beacon_signal = 0;
2034
2035 iwl_mvm_bt_coex_vif_change(mvm);
2036 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2037 IEEE80211_SMPS_AUTOMATIC);
2038 if (fw_has_capa(&mvm->fw->ucode_capa,
2039 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2040 iwl_mvm_config_scan(mvm);
2041 }
2042
2043 if (changes & BSS_CHANGED_BEACON_INFO) {
2044 /*
2045 * We received a beacon from the associated AP so
2046 * remove the session protection.
2047 */
2048 iwl_mvm_stop_session_protection(mvm, vif);
2049
2050 iwl_mvm_sf_update(mvm, vif, false);
2051 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2052 }
2053
2054 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2055 /*
2056 * Send power command on every beacon change,
2057 * because we may have not enabled beacon abort yet.
2058 */
2059 BSS_CHANGED_BEACON_INFO)) {
2060 ret = iwl_mvm_power_update_mac(mvm);
2061 if (ret)
2062 IWL_ERR(mvm, "failed to update power mode\n");
2063 }
2064
2065 if (changes & BSS_CHANGED_TXPOWER) {
2066 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2067 bss_conf->txpower);
2068 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2069 }
2070
2071 if (changes & BSS_CHANGED_CQM) {
2072 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2073 /* reset cqm events tracking */
2074 mvmvif->bf_data.last_cqm_event = 0;
2075 if (mvmvif->bf_data.bf_enabled) {
2076 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2077 if (ret)
2078 IWL_ERR(mvm,
2079 "failed to update CQM thresholds\n");
2080 }
2081 }
2082
2083 if (changes & BSS_CHANGED_ARP_FILTER) {
2084 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2085 iwl_mvm_configure_bcast_filter(mvm);
2086 }
2087 }
2088
2089 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2090 struct ieee80211_vif *vif)
2091 {
2092 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2093 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2094 int ret;
2095
2096 /*
2097 * iwl_mvm_mac_ctxt_add() might read directly from the device
2098 * (the system time), so make sure it is available.
2099 */
2100 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2101 if (ret)
2102 return ret;
2103
2104 mutex_lock(&mvm->mutex);
2105
2106 /* Send the beacon template */
2107 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2108 if (ret)
2109 goto out_unlock;
2110
2111 /*
2112 * Re-calculate the tsf id, as the master-slave relations depend on the
2113 * beacon interval, which was not known when the AP interface was added.
2114 */
2115 if (vif->type == NL80211_IFTYPE_AP)
2116 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2117
2118 mvmvif->ap_assoc_sta_count = 0;
2119
2120 /* Add the mac context */
2121 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2122 if (ret)
2123 goto out_unlock;
2124
2125 /* Perform the binding */
2126 ret = iwl_mvm_binding_add_vif(mvm, vif);
2127 if (ret)
2128 goto out_remove;
2129
2130 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2131 if (ret)
2132 goto out_unbind;
2133
2134 /* Send the bcast station. At this stage the TBTT and DTIM time events
2135 * are added and applied to the scheduler */
2136 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2137 if (ret)
2138 goto out_rm_mcast;
2139
2140 /* must be set before quota calculations */
2141 mvmvif->ap_ibss_active = true;
2142
2143 /* power updated needs to be done before quotas */
2144 iwl_mvm_power_update_mac(mvm);
2145
2146 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2147 if (ret)
2148 goto out_quota_failed;
2149
2150 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2151 if (vif->p2p && mvm->p2p_device_vif)
2152 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2153
2154 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2155
2156 iwl_mvm_bt_coex_vif_change(mvm);
2157
2158 /* we don't support TDLS during DCM */
2159 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2160 iwl_mvm_teardown_tdls_peers(mvm);
2161
2162 goto out_unlock;
2163
2164 out_quota_failed:
2165 iwl_mvm_power_update_mac(mvm);
2166 mvmvif->ap_ibss_active = false;
2167 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2168 out_rm_mcast:
2169 iwl_mvm_rm_mcast_sta(mvm, vif);
2170 out_unbind:
2171 iwl_mvm_binding_remove_vif(mvm, vif);
2172 out_remove:
2173 iwl_mvm_mac_ctxt_remove(mvm, vif);
2174 out_unlock:
2175 mutex_unlock(&mvm->mutex);
2176 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2177 return ret;
2178 }
2179
2180 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2181 struct ieee80211_vif *vif)
2182 {
2183 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2184 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2185
2186 iwl_mvm_prepare_mac_removal(mvm, vif);
2187
2188 mutex_lock(&mvm->mutex);
2189
2190 /* Handle AP stop while in CSA */
2191 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2192 iwl_mvm_remove_time_event(mvm, mvmvif,
2193 &mvmvif->time_event_data);
2194 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2195 mvmvif->csa_countdown = false;
2196 }
2197
2198 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2199 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2200 mvm->csa_tx_block_bcn_timeout = 0;
2201 }
2202
2203 mvmvif->ap_ibss_active = false;
2204 mvm->ap_last_beacon_gp2 = 0;
2205
2206 iwl_mvm_bt_coex_vif_change(mvm);
2207
2208 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2209
2210 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2211 if (vif->p2p && mvm->p2p_device_vif)
2212 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2213
2214 iwl_mvm_update_quotas(mvm, false, NULL);
2215
2216 /*
2217 * This is not very nice, but the simplest:
2218 * For older FWs removing the mcast sta before the bcast station may
2219 * cause assert 0x2b00.
2220 * This is fixed in later FW (which will stop beaconing when removing
2221 * bcast station).
2222 * So make the order of removal depend on the TLV
2223 */
2224 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2225 iwl_mvm_rm_mcast_sta(mvm, vif);
2226 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2227 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2228 iwl_mvm_rm_mcast_sta(mvm, vif);
2229 iwl_mvm_binding_remove_vif(mvm, vif);
2230
2231 iwl_mvm_power_update_mac(mvm);
2232
2233 iwl_mvm_mac_ctxt_remove(mvm, vif);
2234
2235 mutex_unlock(&mvm->mutex);
2236 }
2237
2238 static void
2239 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2240 struct ieee80211_vif *vif,
2241 struct ieee80211_bss_conf *bss_conf,
2242 u32 changes)
2243 {
2244 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2245
2246 /* Changes will be applied when the AP/IBSS is started */
2247 if (!mvmvif->ap_ibss_active)
2248 return;
2249
2250 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2251 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2252 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2253 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2254
2255 /* Need to send a new beacon template to the FW */
2256 if (changes & BSS_CHANGED_BEACON &&
2257 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2258 IWL_WARN(mvm, "Failed updating beacon data\n");
2259
2260 if (changes & BSS_CHANGED_TXPOWER) {
2261 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2262 bss_conf->txpower);
2263 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2264 }
2265 }
2266
2267 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2268 struct ieee80211_vif *vif,
2269 struct ieee80211_bss_conf *bss_conf,
2270 u32 changes)
2271 {
2272 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2273
2274 /*
2275 * iwl_mvm_bss_info_changed_station() might call
2276 * iwl_mvm_protect_session(), which reads directly from
2277 * the device (the system time), so make sure it is available.
2278 */
2279 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2280 return;
2281
2282 mutex_lock(&mvm->mutex);
2283
2284 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2285 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2286
2287 switch (vif->type) {
2288 case NL80211_IFTYPE_STATION:
2289 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2290 break;
2291 case NL80211_IFTYPE_AP:
2292 case NL80211_IFTYPE_ADHOC:
2293 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2294 break;
2295 case NL80211_IFTYPE_MONITOR:
2296 if (changes & BSS_CHANGED_MU_GROUPS)
2297 iwl_mvm_update_mu_groups(mvm, vif);
2298 break;
2299 default:
2300 /* shouldn't happen */
2301 WARN_ON_ONCE(1);
2302 }
2303
2304 mutex_unlock(&mvm->mutex);
2305 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2306 }
2307
2308 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2309 struct ieee80211_vif *vif,
2310 struct ieee80211_scan_request *hw_req)
2311 {
2312 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2313 int ret;
2314
2315 if (hw_req->req.n_channels == 0 ||
2316 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2317 return -EINVAL;
2318
2319 mutex_lock(&mvm->mutex);
2320 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2321 mutex_unlock(&mvm->mutex);
2322
2323 return ret;
2324 }
2325
2326 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2327 struct ieee80211_vif *vif)
2328 {
2329 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2330
2331 mutex_lock(&mvm->mutex);
2332
2333 /* Due to a race condition, it's possible that mac80211 asks
2334 * us to stop a hw_scan when it's already stopped. This can
2335 * happen, for instance, if we stopped the scan ourselves,
2336 * called ieee80211_scan_completed() and the userspace called
2337 * cancel scan scan before ieee80211_scan_work() could run.
2338 * To handle that, simply return if the scan is not running.
2339 */
2340 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2341 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2342
2343 mutex_unlock(&mvm->mutex);
2344 }
2345
2346 static void
2347 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2348 struct ieee80211_sta *sta, u16 tids,
2349 int num_frames,
2350 enum ieee80211_frame_release_type reason,
2351 bool more_data)
2352 {
2353 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2354
2355 /* Called when we need to transmit (a) frame(s) from mac80211 */
2356
2357 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2358 tids, more_data, false);
2359 }
2360
2361 static void
2362 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2363 struct ieee80211_sta *sta, u16 tids,
2364 int num_frames,
2365 enum ieee80211_frame_release_type reason,
2366 bool more_data)
2367 {
2368 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2369
2370 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2371
2372 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2373 tids, more_data, true);
2374 }
2375
2376 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2377 enum sta_notify_cmd cmd,
2378 struct ieee80211_sta *sta)
2379 {
2380 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2381 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2382 unsigned long txqs = 0, tids = 0;
2383 int tid;
2384
2385 /*
2386 * If we have TVQM then we get too high queue numbers - luckily
2387 * we really shouldn't get here with that because such hardware
2388 * should have firmware supporting buffer station offload.
2389 */
2390 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
2391 return;
2392
2393 spin_lock_bh(&mvmsta->lock);
2394 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2395 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2396
2397 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2398 continue;
2399
2400 __set_bit(tid_data->txq_id, &txqs);
2401
2402 if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2403 continue;
2404
2405 __set_bit(tid, &tids);
2406 }
2407
2408 switch (cmd) {
2409 case STA_NOTIFY_SLEEP:
2410 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2411 ieee80211_sta_set_buffered(sta, tid, true);
2412
2413 if (txqs)
2414 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2415 /*
2416 * The fw updates the STA to be asleep. Tx packets on the Tx
2417 * queues to this station will not be transmitted. The fw will
2418 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2419 */
2420 break;
2421 case STA_NOTIFY_AWAKE:
2422 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2423 break;
2424
2425 if (txqs)
2426 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2427 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2428 break;
2429 default:
2430 break;
2431 }
2432 spin_unlock_bh(&mvmsta->lock);
2433 }
2434
2435 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2436 struct ieee80211_vif *vif,
2437 enum sta_notify_cmd cmd,
2438 struct ieee80211_sta *sta)
2439 {
2440 __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2441 }
2442
2443 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2444 {
2445 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2446 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2447 struct ieee80211_sta *sta;
2448 struct iwl_mvm_sta *mvmsta;
2449 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2450
2451 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2452 return;
2453
2454 rcu_read_lock();
2455 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2456 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2457 rcu_read_unlock();
2458 return;
2459 }
2460
2461 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2462
2463 if (!mvmsta->vif ||
2464 mvmsta->vif->type != NL80211_IFTYPE_AP) {
2465 rcu_read_unlock();
2466 return;
2467 }
2468
2469 if (mvmsta->sleeping != sleeping) {
2470 mvmsta->sleeping = sleeping;
2471 __iwl_mvm_mac_sta_notify(mvm->hw,
2472 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2473 sta);
2474 ieee80211_sta_ps_transition(sta, sleeping);
2475 }
2476
2477 if (sleeping) {
2478 switch (notif->type) {
2479 case IWL_MVM_PM_EVENT_AWAKE:
2480 case IWL_MVM_PM_EVENT_ASLEEP:
2481 break;
2482 case IWL_MVM_PM_EVENT_UAPSD:
2483 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2484 break;
2485 case IWL_MVM_PM_EVENT_PS_POLL:
2486 ieee80211_sta_pspoll(sta);
2487 break;
2488 default:
2489 break;
2490 }
2491 }
2492
2493 rcu_read_unlock();
2494 }
2495
2496 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2497 struct ieee80211_vif *vif,
2498 struct ieee80211_sta *sta)
2499 {
2500 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2501 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2502
2503 /*
2504 * This is called before mac80211 does RCU synchronisation,
2505 * so here we already invalidate our internal RCU-protected
2506 * station pointer. The rest of the code will thus no longer
2507 * be able to find the station this way, and we don't rely
2508 * on further RCU synchronisation after the sta_state()
2509 * callback deleted the station.
2510 */
2511 mutex_lock(&mvm->mutex);
2512 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2513 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2514 ERR_PTR(-ENOENT));
2515
2516 mutex_unlock(&mvm->mutex);
2517 }
2518
2519 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2520 const u8 *bssid)
2521 {
2522 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2523 return;
2524
2525 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2526 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2527 return;
2528 }
2529
2530 if (!vif->p2p &&
2531 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2532 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2533 return;
2534 }
2535
2536 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2537 }
2538
2539 static void
2540 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2541 struct ieee80211_vif *vif, u8 *peer_addr,
2542 enum nl80211_tdls_operation action)
2543 {
2544 struct iwl_fw_dbg_trigger_tlv *trig;
2545 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2546
2547 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2548 return;
2549
2550 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2551 tdls_trig = (void *)trig->data;
2552 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
2553 ieee80211_vif_to_wdev(vif), trig))
2554 return;
2555
2556 if (!(tdls_trig->action_bitmap & BIT(action)))
2557 return;
2558
2559 if (tdls_trig->peer_mode &&
2560 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2561 return;
2562
2563 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2564 "TDLS event occurred, peer %pM, action %d",
2565 peer_addr, action);
2566 }
2567
2568 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2569 struct iwl_mvm_sta *mvm_sta)
2570 {
2571 struct iwl_mvm_tid_data *tid_data;
2572 struct sk_buff *skb;
2573 int i;
2574
2575 spin_lock_bh(&mvm_sta->lock);
2576 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2577 tid_data = &mvm_sta->tid_data[i];
2578
2579 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) {
2580 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2581
2582 /*
2583 * The first deferred frame should've stopped the MAC
2584 * queues, so we should never get a second deferred
2585 * frame for the RA/TID.
2586 */
2587 iwl_mvm_start_mac_queues(mvm, BIT(info->hw_queue));
2588 ieee80211_free_txskb(mvm->hw, skb);
2589 }
2590 }
2591 spin_unlock_bh(&mvm_sta->lock);
2592 }
2593
2594 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2595 struct ieee80211_vif *vif,
2596 struct ieee80211_sta *sta,
2597 enum ieee80211_sta_state old_state,
2598 enum ieee80211_sta_state new_state)
2599 {
2600 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2601 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2602 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2603 int ret;
2604
2605 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2606 sta->addr, old_state, new_state);
2607
2608 /* this would be a mac80211 bug ... but don't crash */
2609 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2610 return -EINVAL;
2611
2612 /*
2613 * If we are in a STA removal flow and in DQA mode:
2614 *
2615 * This is after the sync_rcu part, so the queues have already been
2616 * flushed. No more TXs on their way in mac80211's path, and no more in
2617 * the queues.
2618 * Also, we won't be getting any new TX frames for this station.
2619 * What we might have are deferred TX frames that need to be taken care
2620 * of.
2621 *
2622 * Drop any still-queued deferred-frame before removing the STA, and
2623 * make sure the worker is no longer handling frames for this STA.
2624 */
2625 if (old_state == IEEE80211_STA_NONE &&
2626 new_state == IEEE80211_STA_NOTEXIST) {
2627 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2628 flush_work(&mvm->add_stream_wk);
2629
2630 /*
2631 * No need to make sure deferred TX indication is off since the
2632 * worker will already remove it if it was on
2633 */
2634 }
2635
2636 mutex_lock(&mvm->mutex);
2637 /* track whether or not the station is associated */
2638 mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC;
2639
2640 if (old_state == IEEE80211_STA_NOTEXIST &&
2641 new_state == IEEE80211_STA_NONE) {
2642 /*
2643 * Firmware bug - it'll crash if the beacon interval is less
2644 * than 16. We can't avoid connecting at all, so refuse the
2645 * station state change, this will cause mac80211 to abandon
2646 * attempts to connect to this AP, and eventually wpa_s will
2647 * blacklist the AP...
2648 */
2649 if (vif->type == NL80211_IFTYPE_STATION &&
2650 vif->bss_conf.beacon_int < 16) {
2651 IWL_ERR(mvm,
2652 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2653 sta->addr, vif->bss_conf.beacon_int);
2654 ret = -EINVAL;
2655 goto out_unlock;
2656 }
2657
2658 if (sta->tdls &&
2659 (vif->p2p ||
2660 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2661 IWL_MVM_TDLS_STA_COUNT ||
2662 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2663 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2664 ret = -EBUSY;
2665 goto out_unlock;
2666 }
2667
2668 ret = iwl_mvm_add_sta(mvm, vif, sta);
2669 if (sta->tdls && ret == 0) {
2670 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2671 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2672 NL80211_TDLS_SETUP);
2673 }
2674 } else if (old_state == IEEE80211_STA_NONE &&
2675 new_state == IEEE80211_STA_AUTH) {
2676 /*
2677 * EBS may be disabled due to previous failures reported by FW.
2678 * Reset EBS status here assuming environment has been changed.
2679 */
2680 mvm->last_ebs_successful = true;
2681 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2682 ret = 0;
2683 } else if (old_state == IEEE80211_STA_AUTH &&
2684 new_state == IEEE80211_STA_ASSOC) {
2685 if (vif->type == NL80211_IFTYPE_AP) {
2686 mvmvif->ap_assoc_sta_count++;
2687 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2688 }
2689
2690 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2691 true);
2692 ret = iwl_mvm_update_sta(mvm, vif, sta);
2693 } else if (old_state == IEEE80211_STA_ASSOC &&
2694 new_state == IEEE80211_STA_AUTHORIZED) {
2695
2696 /* we don't support TDLS during DCM */
2697 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2698 iwl_mvm_teardown_tdls_peers(mvm);
2699
2700 if (sta->tdls)
2701 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2702 NL80211_TDLS_ENABLE_LINK);
2703
2704 /* enable beacon filtering */
2705 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2706 ret = 0;
2707 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2708 new_state == IEEE80211_STA_ASSOC) {
2709 /* disable beacon filtering */
2710 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2711 ret = 0;
2712 } else if (old_state == IEEE80211_STA_ASSOC &&
2713 new_state == IEEE80211_STA_AUTH) {
2714 if (vif->type == NL80211_IFTYPE_AP) {
2715 mvmvif->ap_assoc_sta_count--;
2716 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2717 }
2718 ret = 0;
2719 } else if (old_state == IEEE80211_STA_AUTH &&
2720 new_state == IEEE80211_STA_NONE) {
2721 ret = 0;
2722 } else if (old_state == IEEE80211_STA_NONE &&
2723 new_state == IEEE80211_STA_NOTEXIST) {
2724 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2725 if (sta->tdls) {
2726 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2727 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2728 NL80211_TDLS_DISABLE_LINK);
2729 }
2730 } else {
2731 ret = -EIO;
2732 }
2733 out_unlock:
2734 mutex_unlock(&mvm->mutex);
2735
2736 if (sta->tdls && ret == 0) {
2737 if (old_state == IEEE80211_STA_NOTEXIST &&
2738 new_state == IEEE80211_STA_NONE)
2739 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2740 else if (old_state == IEEE80211_STA_NONE &&
2741 new_state == IEEE80211_STA_NOTEXIST)
2742 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2743 }
2744
2745 return ret;
2746 }
2747
2748 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2749 {
2750 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2751
2752 mvm->rts_threshold = value;
2753
2754 return 0;
2755 }
2756
2757 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2758 struct ieee80211_vif *vif,
2759 struct ieee80211_sta *sta, u32 changed)
2760 {
2761 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2762
2763 if (vif->type == NL80211_IFTYPE_STATION &&
2764 changed & IEEE80211_RC_NSS_CHANGED)
2765 iwl_mvm_sf_update(mvm, vif, false);
2766 }
2767
2768 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2769 struct ieee80211_vif *vif, u16 ac,
2770 const struct ieee80211_tx_queue_params *params)
2771 {
2772 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2773 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2774
2775 mvmvif->queue_params[ac] = *params;
2776
2777 /*
2778 * No need to update right away, we'll get BSS_CHANGED_QOS
2779 * The exception is P2P_DEVICE interface which needs immediate update.
2780 */
2781 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2782 int ret;
2783
2784 mutex_lock(&mvm->mutex);
2785 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2786 mutex_unlock(&mvm->mutex);
2787 return ret;
2788 }
2789 return 0;
2790 }
2791
2792 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2793 struct ieee80211_vif *vif)
2794 {
2795 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2796 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2797 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2798
2799 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2800 return;
2801
2802 /*
2803 * iwl_mvm_protect_session() reads directly from the device
2804 * (the system time), so make sure it is available.
2805 */
2806 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2807 return;
2808
2809 mutex_lock(&mvm->mutex);
2810 /* Try really hard to protect the session and hear a beacon */
2811 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2812 mutex_unlock(&mvm->mutex);
2813
2814 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2815 }
2816
2817 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2818 struct ieee80211_vif *vif,
2819 struct cfg80211_sched_scan_request *req,
2820 struct ieee80211_scan_ies *ies)
2821 {
2822 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2823
2824 int ret;
2825
2826 mutex_lock(&mvm->mutex);
2827
2828 if (!vif->bss_conf.idle) {
2829 ret = -EBUSY;
2830 goto out;
2831 }
2832
2833 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2834
2835 out:
2836 mutex_unlock(&mvm->mutex);
2837 return ret;
2838 }
2839
2840 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2841 struct ieee80211_vif *vif)
2842 {
2843 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2844 int ret;
2845
2846 mutex_lock(&mvm->mutex);
2847
2848 /* Due to a race condition, it's possible that mac80211 asks
2849 * us to stop a sched_scan when it's already stopped. This
2850 * can happen, for instance, if we stopped the scan ourselves,
2851 * called ieee80211_sched_scan_stopped() and the userspace called
2852 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2853 * could run. To handle this, simply return if the scan is
2854 * not running.
2855 */
2856 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2857 mutex_unlock(&mvm->mutex);
2858 return 0;
2859 }
2860
2861 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2862 mutex_unlock(&mvm->mutex);
2863 iwl_mvm_wait_for_async_handlers(mvm);
2864
2865 return ret;
2866 }
2867
2868 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2869 enum set_key_cmd cmd,
2870 struct ieee80211_vif *vif,
2871 struct ieee80211_sta *sta,
2872 struct ieee80211_key_conf *key)
2873 {
2874 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2875 struct iwl_mvm_sta *mvmsta;
2876 struct iwl_mvm_key_pn *ptk_pn;
2877 int keyidx = key->keyidx;
2878 int ret;
2879 u8 key_offset;
2880
2881 if (iwlwifi_mod_params.swcrypto) {
2882 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2883 return -EOPNOTSUPP;
2884 }
2885
2886 switch (key->cipher) {
2887 case WLAN_CIPHER_SUITE_TKIP:
2888 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2889 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2890 break;
2891 case WLAN_CIPHER_SUITE_CCMP:
2892 case WLAN_CIPHER_SUITE_GCMP:
2893 case WLAN_CIPHER_SUITE_GCMP_256:
2894 if (!iwl_mvm_has_new_tx_api(mvm))
2895 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2896 break;
2897 case WLAN_CIPHER_SUITE_AES_CMAC:
2898 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2899 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2900 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2901 break;
2902 case WLAN_CIPHER_SUITE_WEP40:
2903 case WLAN_CIPHER_SUITE_WEP104:
2904 /* For non-client mode, only use WEP keys for TX as we probably
2905 * don't have a station yet anyway and would then have to keep
2906 * track of the keys, linking them to each of the clients/peers
2907 * as they appear. For now, don't do that, for performance WEP
2908 * offload doesn't really matter much, but we need it for some
2909 * other offload features in client mode.
2910 */
2911 if (vif->type != NL80211_IFTYPE_STATION)
2912 return 0;
2913 break;
2914 default:
2915 /* currently FW supports only one optional cipher scheme */
2916 if (hw->n_cipher_schemes &&
2917 hw->cipher_schemes->cipher == key->cipher)
2918 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2919 else
2920 return -EOPNOTSUPP;
2921 }
2922
2923 mutex_lock(&mvm->mutex);
2924
2925 switch (cmd) {
2926 case SET_KEY:
2927 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2928 vif->type == NL80211_IFTYPE_AP) && !sta) {
2929 /*
2930 * GTK on AP interface is a TX-only key, return 0;
2931 * on IBSS they're per-station and because we're lazy
2932 * we don't support them for RX, so do the same.
2933 * CMAC/GMAC in AP/IBSS modes must be done in software.
2934 */
2935 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2936 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2937 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2938 ret = -EOPNOTSUPP;
2939 else
2940 ret = 0;
2941
2942 if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
2943 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
2944 !iwl_mvm_has_new_tx_api(mvm)) {
2945 key->hw_key_idx = STA_KEY_IDX_INVALID;
2946 break;
2947 }
2948 }
2949
2950 /* During FW restart, in order to restore the state as it was,
2951 * don't try to reprogram keys we previously failed for.
2952 */
2953 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2954 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2955 IWL_DEBUG_MAC80211(mvm,
2956 "skip invalid idx key programming during restart\n");
2957 ret = 0;
2958 break;
2959 }
2960
2961 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2962 sta && iwl_mvm_has_new_rx_api(mvm) &&
2963 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2964 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2965 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2966 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2967 struct ieee80211_key_seq seq;
2968 int tid, q;
2969
2970 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2971 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2972 ptk_pn = kzalloc(sizeof(*ptk_pn) +
2973 mvm->trans->num_rx_queues *
2974 sizeof(ptk_pn->q[0]),
2975 GFP_KERNEL);
2976 if (!ptk_pn) {
2977 ret = -ENOMEM;
2978 break;
2979 }
2980
2981 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2982 ieee80211_get_key_rx_seq(key, tid, &seq);
2983 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2984 memcpy(ptk_pn->q[q].pn[tid],
2985 seq.ccmp.pn,
2986 IEEE80211_CCMP_PN_LEN);
2987 }
2988
2989 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2990 }
2991
2992 /* in HW restart reuse the index, otherwise request a new one */
2993 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2994 key_offset = key->hw_key_idx;
2995 else
2996 key_offset = STA_KEY_IDX_INVALID;
2997
2998 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2999 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
3000 if (ret) {
3001 IWL_WARN(mvm, "set key failed\n");
3002 /*
3003 * can't add key for RX, but we don't need it
3004 * in the device for TX so still return 0
3005 */
3006 key->hw_key_idx = STA_KEY_IDX_INVALID;
3007 ret = 0;
3008 }
3009
3010 break;
3011 case DISABLE_KEY:
3012 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3013 ret = 0;
3014 break;
3015 }
3016
3017 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
3018 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3019 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3020 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3021 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3022 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3023 ptk_pn = rcu_dereference_protected(
3024 mvmsta->ptk_pn[keyidx],
3025 lockdep_is_held(&mvm->mutex));
3026 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3027 if (ptk_pn)
3028 kfree_rcu(ptk_pn, rcu_head);
3029 }
3030
3031 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3032 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3033 break;
3034 default:
3035 ret = -EINVAL;
3036 }
3037
3038 mutex_unlock(&mvm->mutex);
3039 return ret;
3040 }
3041
3042 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3043 struct ieee80211_vif *vif,
3044 struct ieee80211_key_conf *keyconf,
3045 struct ieee80211_sta *sta,
3046 u32 iv32, u16 *phase1key)
3047 {
3048 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3049
3050 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3051 return;
3052
3053 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3054 }
3055
3056
3057 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3058 struct iwl_rx_packet *pkt, void *data)
3059 {
3060 struct iwl_mvm *mvm =
3061 container_of(notif_wait, struct iwl_mvm, notif_wait);
3062 struct iwl_hs20_roc_res *resp;
3063 int resp_len = iwl_rx_packet_payload_len(pkt);
3064 struct iwl_mvm_time_event_data *te_data = data;
3065
3066 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3067 return true;
3068
3069 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3070 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3071 return true;
3072 }
3073
3074 resp = (void *)pkt->data;
3075
3076 IWL_DEBUG_TE(mvm,
3077 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3078 resp->status, resp->event_unique_id);
3079
3080 te_data->uid = le32_to_cpu(resp->event_unique_id);
3081 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3082 te_data->uid);
3083
3084 spin_lock_bh(&mvm->time_event_lock);
3085 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3086 spin_unlock_bh(&mvm->time_event_lock);
3087
3088 return true;
3089 }
3090
3091 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3092 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3093 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3094 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3095 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3096 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3097 struct ieee80211_channel *channel,
3098 struct ieee80211_vif *vif,
3099 int duration)
3100 {
3101 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3102 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3103 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3104 static const u16 time_event_response[] = { HOT_SPOT_CMD };
3105 struct iwl_notification_wait wait_time_event;
3106 u32 dtim_interval = vif->bss_conf.dtim_period *
3107 vif->bss_conf.beacon_int;
3108 u32 req_dur, delay;
3109 struct iwl_hs20_roc_req aux_roc_req = {
3110 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3111 .id_and_color =
3112 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3113 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3114 /* Set the channel info data */
3115 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3116 PHY_BAND_24 : PHY_BAND_5,
3117 .channel_info.channel = channel->hw_value,
3118 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3119 /* Set the time and duration */
3120 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3121 };
3122
3123 delay = AUX_ROC_MIN_DELAY;
3124 req_dur = MSEC_TO_TU(duration);
3125
3126 /*
3127 * If we are associated we want the delay time to be at least one
3128 * dtim interval so that the FW can wait until after the DTIM and
3129 * then start the time event, this will potentially allow us to
3130 * remain off-channel for the max duration.
3131 * Since we want to use almost a whole dtim interval we would also
3132 * like the delay to be for 2-3 dtim intervals, in case there are
3133 * other time events with higher priority.
3134 */
3135 if (vif->bss_conf.assoc) {
3136 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3137 /* We cannot remain off-channel longer than the DTIM interval */
3138 if (dtim_interval <= req_dur) {
3139 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3140 if (req_dur <= AUX_ROC_MIN_DURATION)
3141 req_dur = dtim_interval -
3142 AUX_ROC_MIN_SAFETY_BUFFER;
3143 }
3144 }
3145
3146 aux_roc_req.duration = cpu_to_le32(req_dur);
3147 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3148
3149 IWL_DEBUG_TE(mvm,
3150 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3151 channel->hw_value, req_dur, duration, delay,
3152 dtim_interval);
3153 /* Set the node address */
3154 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3155
3156 lockdep_assert_held(&mvm->mutex);
3157
3158 spin_lock_bh(&mvm->time_event_lock);
3159
3160 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3161 spin_unlock_bh(&mvm->time_event_lock);
3162 return -EIO;
3163 }
3164
3165 te_data->vif = vif;
3166 te_data->duration = duration;
3167 te_data->id = HOT_SPOT_CMD;
3168
3169 spin_unlock_bh(&mvm->time_event_lock);
3170
3171 /*
3172 * Use a notification wait, which really just processes the
3173 * command response and doesn't wait for anything, in order
3174 * to be able to process the response and get the UID inside
3175 * the RX path. Using CMD_WANT_SKB doesn't work because it
3176 * stores the buffer and then wakes up this thread, by which
3177 * time another notification (that the time event started)
3178 * might already be processed unsuccessfully.
3179 */
3180 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3181 time_event_response,
3182 ARRAY_SIZE(time_event_response),
3183 iwl_mvm_rx_aux_roc, te_data);
3184
3185 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3186 &aux_roc_req);
3187
3188 if (res) {
3189 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3190 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3191 goto out_clear_te;
3192 }
3193
3194 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3195 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3196 /* should never fail */
3197 WARN_ON_ONCE(res);
3198
3199 if (res) {
3200 out_clear_te:
3201 spin_lock_bh(&mvm->time_event_lock);
3202 iwl_mvm_te_clear_data(mvm, te_data);
3203 spin_unlock_bh(&mvm->time_event_lock);
3204 }
3205
3206 return res;
3207 }
3208
3209 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3210 struct ieee80211_vif *vif,
3211 struct ieee80211_channel *channel,
3212 int duration,
3213 enum ieee80211_roc_type type)
3214 {
3215 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3216 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3217 struct cfg80211_chan_def chandef;
3218 struct iwl_mvm_phy_ctxt *phy_ctxt;
3219 int ret, i;
3220
3221 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3222 duration, type);
3223
3224 flush_work(&mvm->roc_done_wk);
3225
3226 mutex_lock(&mvm->mutex);
3227
3228 switch (vif->type) {
3229 case NL80211_IFTYPE_STATION:
3230 if (fw_has_capa(&mvm->fw->ucode_capa,
3231 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3232 /* Use aux roc framework (HS20) */
3233 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3234 vif, duration);
3235 goto out_unlock;
3236 }
3237 IWL_ERR(mvm, "hotspot not supported\n");
3238 ret = -EINVAL;
3239 goto out_unlock;
3240 case NL80211_IFTYPE_P2P_DEVICE:
3241 /* handle below */
3242 break;
3243 default:
3244 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3245 ret = -EINVAL;
3246 goto out_unlock;
3247 }
3248
3249 for (i = 0; i < NUM_PHY_CTX; i++) {
3250 phy_ctxt = &mvm->phy_ctxts[i];
3251 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3252 continue;
3253
3254 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3255 /*
3256 * Unbind the P2P_DEVICE from the current PHY context,
3257 * and if the PHY context is not used remove it.
3258 */
3259 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3260 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3261 goto out_unlock;
3262
3263 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3264
3265 /* Bind the P2P_DEVICE to the current PHY Context */
3266 mvmvif->phy_ctxt = phy_ctxt;
3267
3268 ret = iwl_mvm_binding_add_vif(mvm, vif);
3269 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3270 goto out_unlock;
3271
3272 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3273 goto schedule_time_event;
3274 }
3275 }
3276
3277 /* Need to update the PHY context only if the ROC channel changed */
3278 if (channel == mvmvif->phy_ctxt->channel)
3279 goto schedule_time_event;
3280
3281 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3282
3283 /*
3284 * Change the PHY context configuration as it is currently referenced
3285 * only by the P2P Device MAC
3286 */
3287 if (mvmvif->phy_ctxt->ref == 1) {
3288 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3289 &chandef, 1, 1);
3290 if (ret)
3291 goto out_unlock;
3292 } else {
3293 /*
3294 * The PHY context is shared with other MACs. Need to remove the
3295 * P2P Device from the binding, allocate an new PHY context and
3296 * create a new binding
3297 */
3298 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3299 if (!phy_ctxt) {
3300 ret = -ENOSPC;
3301 goto out_unlock;
3302 }
3303
3304 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3305 1, 1);
3306 if (ret) {
3307 IWL_ERR(mvm, "Failed to change PHY context\n");
3308 goto out_unlock;
3309 }
3310
3311 /* Unbind the P2P_DEVICE from the current PHY context */
3312 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3313 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3314 goto out_unlock;
3315
3316 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3317
3318 /* Bind the P2P_DEVICE to the new allocated PHY context */
3319 mvmvif->phy_ctxt = phy_ctxt;
3320
3321 ret = iwl_mvm_binding_add_vif(mvm, vif);
3322 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3323 goto out_unlock;
3324
3325 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3326 }
3327
3328 schedule_time_event:
3329 /* Schedule the time events */
3330 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3331
3332 out_unlock:
3333 mutex_unlock(&mvm->mutex);
3334 IWL_DEBUG_MAC80211(mvm, "leave\n");
3335 return ret;
3336 }
3337
3338 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3339 {
3340 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3341
3342 IWL_DEBUG_MAC80211(mvm, "enter\n");
3343
3344 mutex_lock(&mvm->mutex);
3345 iwl_mvm_stop_roc(mvm);
3346 mutex_unlock(&mvm->mutex);
3347
3348 IWL_DEBUG_MAC80211(mvm, "leave\n");
3349 return 0;
3350 }
3351
3352 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3353 struct ieee80211_chanctx_conf *ctx)
3354 {
3355 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3356 struct iwl_mvm_phy_ctxt *phy_ctxt;
3357 int ret;
3358
3359 lockdep_assert_held(&mvm->mutex);
3360
3361 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3362
3363 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3364 if (!phy_ctxt) {
3365 ret = -ENOSPC;
3366 goto out;
3367 }
3368
3369 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3370 ctx->rx_chains_static,
3371 ctx->rx_chains_dynamic);
3372 if (ret) {
3373 IWL_ERR(mvm, "Failed to add PHY context\n");
3374 goto out;
3375 }
3376
3377 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3378 *phy_ctxt_id = phy_ctxt->id;
3379 out:
3380 return ret;
3381 }
3382
3383 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3384 struct ieee80211_chanctx_conf *ctx)
3385 {
3386 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3387 int ret;
3388
3389 mutex_lock(&mvm->mutex);
3390 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3391 mutex_unlock(&mvm->mutex);
3392
3393 return ret;
3394 }
3395
3396 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3397 struct ieee80211_chanctx_conf *ctx)
3398 {
3399 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3400 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3401
3402 lockdep_assert_held(&mvm->mutex);
3403
3404 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3405 }
3406
3407 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3408 struct ieee80211_chanctx_conf *ctx)
3409 {
3410 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3411
3412 mutex_lock(&mvm->mutex);
3413 __iwl_mvm_remove_chanctx(mvm, ctx);
3414 mutex_unlock(&mvm->mutex);
3415 }
3416
3417 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3418 struct ieee80211_chanctx_conf *ctx,
3419 u32 changed)
3420 {
3421 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3422 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3423 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3424
3425 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3426 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3427 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3428 IEEE80211_CHANCTX_CHANGE_RADAR |
3429 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3430 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3431 phy_ctxt->ref, changed))
3432 return;
3433
3434 mutex_lock(&mvm->mutex);
3435 iwl_mvm_bt_coex_vif_change(mvm);
3436 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3437 ctx->rx_chains_static,
3438 ctx->rx_chains_dynamic);
3439 mutex_unlock(&mvm->mutex);
3440 }
3441
3442 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3443 struct ieee80211_vif *vif,
3444 struct ieee80211_chanctx_conf *ctx,
3445 bool switching_chanctx)
3446 {
3447 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3448 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3449 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3450 int ret;
3451
3452 lockdep_assert_held(&mvm->mutex);
3453
3454 mvmvif->phy_ctxt = phy_ctxt;
3455
3456 switch (vif->type) {
3457 case NL80211_IFTYPE_AP:
3458 /* only needed if we're switching chanctx (i.e. during CSA) */
3459 if (switching_chanctx) {
3460 mvmvif->ap_ibss_active = true;
3461 break;
3462 }
3463 case NL80211_IFTYPE_ADHOC:
3464 /*
3465 * The AP binding flow is handled as part of the start_ap flow
3466 * (in bss_info_changed), similarly for IBSS.
3467 */
3468 ret = 0;
3469 goto out;
3470 case NL80211_IFTYPE_STATION:
3471 break;
3472 case NL80211_IFTYPE_MONITOR:
3473 /* always disable PS when a monitor interface is active */
3474 mvmvif->ps_disabled = true;
3475 break;
3476 default:
3477 ret = -EINVAL;
3478 goto out;
3479 }
3480
3481 ret = iwl_mvm_binding_add_vif(mvm, vif);
3482 if (ret)
3483 goto out;
3484
3485 /*
3486 * Power state must be updated before quotas,
3487 * otherwise fw will complain.
3488 */
3489 iwl_mvm_power_update_mac(mvm);
3490
3491 /* Setting the quota at this stage is only required for monitor
3492 * interfaces. For the other types, the bss_info changed flow
3493 * will handle quota settings.
3494 */
3495 if (vif->type == NL80211_IFTYPE_MONITOR) {
3496 mvmvif->monitor_active = true;
3497 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3498 if (ret)
3499 goto out_remove_binding;
3500
3501 ret = iwl_mvm_add_snif_sta(mvm, vif);
3502 if (ret)
3503 goto out_remove_binding;
3504
3505 }
3506
3507 /* Handle binding during CSA */
3508 if (vif->type == NL80211_IFTYPE_AP) {
3509 iwl_mvm_update_quotas(mvm, false, NULL);
3510 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3511 }
3512
3513 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3514 u32 duration = 2 * vif->bss_conf.beacon_int;
3515
3516 /* iwl_mvm_protect_session() reads directly from the
3517 * device (the system time), so make sure it is
3518 * available.
3519 */
3520 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3521 if (ret)
3522 goto out_remove_binding;
3523
3524 /* Protect the session to make sure we hear the first
3525 * beacon on the new channel.
3526 */
3527 iwl_mvm_protect_session(mvm, vif, duration, duration,
3528 vif->bss_conf.beacon_int / 2,
3529 true);
3530
3531 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3532
3533 iwl_mvm_update_quotas(mvm, false, NULL);
3534 }
3535
3536 goto out;
3537
3538 out_remove_binding:
3539 iwl_mvm_binding_remove_vif(mvm, vif);
3540 iwl_mvm_power_update_mac(mvm);
3541 out:
3542 if (ret)
3543 mvmvif->phy_ctxt = NULL;
3544 return ret;
3545 }
3546 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3547 struct ieee80211_vif *vif,
3548 struct ieee80211_chanctx_conf *ctx)
3549 {
3550 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3551 int ret;
3552
3553 mutex_lock(&mvm->mutex);
3554 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3555 mutex_unlock(&mvm->mutex);
3556
3557 return ret;
3558 }
3559
3560 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3561 struct ieee80211_vif *vif,
3562 struct ieee80211_chanctx_conf *ctx,
3563 bool switching_chanctx)
3564 {
3565 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3566 struct ieee80211_vif *disabled_vif = NULL;
3567
3568 lockdep_assert_held(&mvm->mutex);
3569
3570 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3571
3572 switch (vif->type) {
3573 case NL80211_IFTYPE_ADHOC:
3574 goto out;
3575 case NL80211_IFTYPE_MONITOR:
3576 mvmvif->monitor_active = false;
3577 mvmvif->ps_disabled = false;
3578 iwl_mvm_rm_snif_sta(mvm, vif);
3579 break;
3580 case NL80211_IFTYPE_AP:
3581 /* This part is triggered only during CSA */
3582 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3583 goto out;
3584
3585 mvmvif->csa_countdown = false;
3586
3587 /* Set CS bit on all the stations */
3588 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3589
3590 /* Save blocked iface, the timeout is set on the next beacon */
3591 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3592
3593 mvmvif->ap_ibss_active = false;
3594 break;
3595 case NL80211_IFTYPE_STATION:
3596 if (!switching_chanctx)
3597 break;
3598
3599 disabled_vif = vif;
3600
3601 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3602 break;
3603 default:
3604 break;
3605 }
3606
3607 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3608 iwl_mvm_binding_remove_vif(mvm, vif);
3609
3610 out:
3611 mvmvif->phy_ctxt = NULL;
3612 iwl_mvm_power_update_mac(mvm);
3613 }
3614
3615 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3616 struct ieee80211_vif *vif,
3617 struct ieee80211_chanctx_conf *ctx)
3618 {
3619 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3620
3621 mutex_lock(&mvm->mutex);
3622 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3623 mutex_unlock(&mvm->mutex);
3624 }
3625
3626 static int
3627 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3628 struct ieee80211_vif_chanctx_switch *vifs)
3629 {
3630 int ret;
3631
3632 mutex_lock(&mvm->mutex);
3633 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3634 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3635
3636 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3637 if (ret) {
3638 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3639 goto out_reassign;
3640 }
3641
3642 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3643 true);
3644 if (ret) {
3645 IWL_ERR(mvm,
3646 "failed to assign new_ctx during channel switch\n");
3647 goto out_remove;
3648 }
3649
3650 /* we don't support TDLS during DCM - can be caused by channel switch */
3651 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3652 iwl_mvm_teardown_tdls_peers(mvm);
3653
3654 goto out;
3655
3656 out_remove:
3657 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3658
3659 out_reassign:
3660 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3661 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3662 goto out_restart;
3663 }
3664
3665 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3666 true)) {
3667 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3668 goto out_restart;
3669 }
3670
3671 goto out;
3672
3673 out_restart:
3674 /* things keep failing, better restart the hw */
3675 iwl_mvm_nic_restart(mvm, false);
3676
3677 out:
3678 mutex_unlock(&mvm->mutex);
3679
3680 return ret;
3681 }
3682
3683 static int
3684 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3685 struct ieee80211_vif_chanctx_switch *vifs)
3686 {
3687 int ret;
3688
3689 mutex_lock(&mvm->mutex);
3690 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3691
3692 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3693 true);
3694 if (ret) {
3695 IWL_ERR(mvm,
3696 "failed to assign new_ctx during channel switch\n");
3697 goto out_reassign;
3698 }
3699
3700 goto out;
3701
3702 out_reassign:
3703 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3704 true)) {
3705 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3706 goto out_restart;
3707 }
3708
3709 goto out;
3710
3711 out_restart:
3712 /* things keep failing, better restart the hw */
3713 iwl_mvm_nic_restart(mvm, false);
3714
3715 out:
3716 mutex_unlock(&mvm->mutex);
3717
3718 return ret;
3719 }
3720
3721 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3722 struct ieee80211_vif_chanctx_switch *vifs,
3723 int n_vifs,
3724 enum ieee80211_chanctx_switch_mode mode)
3725 {
3726 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3727 int ret;
3728
3729 /* we only support a single-vif right now */
3730 if (n_vifs > 1)
3731 return -EOPNOTSUPP;
3732
3733 switch (mode) {
3734 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3735 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3736 break;
3737 case CHANCTX_SWMODE_REASSIGN_VIF:
3738 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3739 break;
3740 default:
3741 ret = -EOPNOTSUPP;
3742 break;
3743 }
3744
3745 return ret;
3746 }
3747
3748 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
3749 {
3750 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3751
3752 return mvm->ibss_manager;
3753 }
3754
3755 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3756 struct ieee80211_sta *sta,
3757 bool set)
3758 {
3759 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3760 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3761
3762 if (!mvm_sta || !mvm_sta->vif) {
3763 IWL_ERR(mvm, "Station is not associated to a vif\n");
3764 return -EINVAL;
3765 }
3766
3767 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3768 }
3769
3770 #ifdef CONFIG_NL80211_TESTMODE
3771 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3772 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3773 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3774 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3775 };
3776
3777 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3778 struct ieee80211_vif *vif,
3779 void *data, int len)
3780 {
3781 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3782 int err;
3783 u32 noa_duration;
3784
3785 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
3786 NULL);
3787 if (err)
3788 return err;
3789
3790 if (!tb[IWL_MVM_TM_ATTR_CMD])
3791 return -EINVAL;
3792
3793 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3794 case IWL_MVM_TM_CMD_SET_NOA:
3795 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3796 !vif->bss_conf.enable_beacon ||
3797 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3798 return -EINVAL;
3799
3800 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3801 if (noa_duration >= vif->bss_conf.beacon_int)
3802 return -EINVAL;
3803
3804 mvm->noa_duration = noa_duration;
3805 mvm->noa_vif = vif;
3806
3807 return iwl_mvm_update_quotas(mvm, false, NULL);
3808 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3809 /* must be associated client vif - ignore authorized */
3810 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3811 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3812 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3813 return -EINVAL;
3814
3815 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3816 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3817 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3818 }
3819
3820 return -EOPNOTSUPP;
3821 }
3822
3823 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3824 struct ieee80211_vif *vif,
3825 void *data, int len)
3826 {
3827 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3828 int err;
3829
3830 mutex_lock(&mvm->mutex);
3831 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3832 mutex_unlock(&mvm->mutex);
3833
3834 return err;
3835 }
3836 #endif
3837
3838 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3839 struct ieee80211_vif *vif,
3840 struct ieee80211_channel_switch *chsw)
3841 {
3842 /* By implementing this operation, we prevent mac80211 from
3843 * starting its own channel switch timer, so that we can call
3844 * ieee80211_chswitch_done() ourselves at the right time
3845 * (which is when the absence time event starts).
3846 */
3847
3848 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3849 "dummy channel switch op\n");
3850 }
3851
3852 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3853 struct ieee80211_vif *vif,
3854 struct ieee80211_channel_switch *chsw)
3855 {
3856 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3857 struct ieee80211_vif *csa_vif;
3858 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3859 u32 apply_time;
3860 int ret;
3861
3862 mutex_lock(&mvm->mutex);
3863
3864 mvmvif->csa_failed = false;
3865
3866 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3867 chsw->chandef.center_freq1);
3868
3869 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt,
3870 ieee80211_vif_to_wdev(vif),
3871 FW_DBG_TRIGGER_CHANNEL_SWITCH);
3872
3873 switch (vif->type) {
3874 case NL80211_IFTYPE_AP:
3875 csa_vif =
3876 rcu_dereference_protected(mvm->csa_vif,
3877 lockdep_is_held(&mvm->mutex));
3878 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3879 "Another CSA is already in progress")) {
3880 ret = -EBUSY;
3881 goto out_unlock;
3882 }
3883
3884 /* we still didn't unblock tx. prevent new CS meanwhile */
3885 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
3886 lockdep_is_held(&mvm->mutex))) {
3887 ret = -EBUSY;
3888 goto out_unlock;
3889 }
3890
3891 rcu_assign_pointer(mvm->csa_vif, vif);
3892
3893 if (WARN_ONCE(mvmvif->csa_countdown,
3894 "Previous CSA countdown didn't complete")) {
3895 ret = -EBUSY;
3896 goto out_unlock;
3897 }
3898
3899 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
3900
3901 break;
3902 case NL80211_IFTYPE_STATION:
3903 if (mvmvif->lqm_active)
3904 iwl_mvm_send_lqm_cmd(vif,
3905 LQM_CMD_OPERATION_STOP_MEASUREMENT,
3906 0, 0);
3907
3908 /* Schedule the time event to a bit before beacon 1,
3909 * to make sure we're in the new channel when the
3910 * GO/AP arrives. In case count <= 1 immediately schedule the
3911 * TE (this might result with some packet loss or connection
3912 * loss).
3913 */
3914 if (chsw->count <= 1)
3915 apply_time = 0;
3916 else
3917 apply_time = chsw->device_timestamp +
3918 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3919 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3920
3921 if (chsw->block_tx)
3922 iwl_mvm_csa_client_absent(mvm, vif);
3923
3924 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3925 apply_time);
3926 if (mvmvif->bf_data.bf_enabled) {
3927 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3928 if (ret)
3929 goto out_unlock;
3930 }
3931
3932 break;
3933 default:
3934 break;
3935 }
3936
3937 mvmvif->ps_disabled = true;
3938
3939 ret = iwl_mvm_power_update_ps(mvm);
3940 if (ret)
3941 goto out_unlock;
3942
3943 /* we won't be on this channel any longer */
3944 iwl_mvm_teardown_tdls_peers(mvm);
3945
3946 out_unlock:
3947 mutex_unlock(&mvm->mutex);
3948
3949 return ret;
3950 }
3951
3952 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3953 struct ieee80211_vif *vif)
3954 {
3955 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3956 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3957 int ret;
3958
3959 mutex_lock(&mvm->mutex);
3960
3961 if (mvmvif->csa_failed) {
3962 mvmvif->csa_failed = false;
3963 ret = -EIO;
3964 goto out_unlock;
3965 }
3966
3967 if (vif->type == NL80211_IFTYPE_STATION) {
3968 struct iwl_mvm_sta *mvmsta;
3969
3970 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3971 mvmvif->ap_sta_id);
3972
3973 if (WARN_ON(!mvmsta)) {
3974 ret = -EIO;
3975 goto out_unlock;
3976 }
3977
3978 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3979
3980 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3981
3982 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3983 if (ret)
3984 goto out_unlock;
3985
3986 iwl_mvm_stop_session_protection(mvm, vif);
3987 }
3988
3989 mvmvif->ps_disabled = false;
3990
3991 ret = iwl_mvm_power_update_ps(mvm);
3992
3993 out_unlock:
3994 mutex_unlock(&mvm->mutex);
3995
3996 return ret;
3997 }
3998
3999 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
4000 {
4001 if (drop) {
4002 if (iwl_mvm_has_new_tx_api(mvm))
4003 /* TODO new tx api */
4004 WARN_ONCE(1,
4005 "Need to implement flush TX queue\n");
4006 else
4007 iwl_mvm_flush_tx_path(mvm,
4008 iwl_mvm_flushable_queues(mvm) & queues,
4009 0);
4010 } else {
4011 if (iwl_mvm_has_new_tx_api(mvm)) {
4012 struct ieee80211_sta *sta;
4013 int i;
4014
4015 mutex_lock(&mvm->mutex);
4016
4017 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4018 sta = rcu_dereference_protected(
4019 mvm->fw_id_to_mac_id[i],
4020 lockdep_is_held(&mvm->mutex));
4021 if (IS_ERR_OR_NULL(sta))
4022 continue;
4023
4024 iwl_mvm_wait_sta_queues_empty(mvm,
4025 iwl_mvm_sta_from_mac80211(sta));
4026 }
4027
4028 mutex_unlock(&mvm->mutex);
4029 } else {
4030 iwl_trans_wait_tx_queues_empty(mvm->trans,
4031 queues);
4032 }
4033 }
4034 }
4035
4036 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
4037 struct ieee80211_vif *vif, u32 queues, bool drop)
4038 {
4039 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4040 struct iwl_mvm_vif *mvmvif;
4041 struct iwl_mvm_sta *mvmsta;
4042 struct ieee80211_sta *sta;
4043 int i;
4044 u32 msk = 0;
4045
4046 if (!vif) {
4047 iwl_mvm_flush_no_vif(mvm, queues, drop);
4048 return;
4049 }
4050
4051 if (vif->type != NL80211_IFTYPE_STATION)
4052 return;
4053
4054 /* Make sure we're done with the deferred traffic before flushing */
4055 flush_work(&mvm->add_stream_wk);
4056
4057 mutex_lock(&mvm->mutex);
4058 mvmvif = iwl_mvm_vif_from_mac80211(vif);
4059
4060 /* flush the AP-station and all TDLS peers */
4061 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4062 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4063 lockdep_is_held(&mvm->mutex));
4064 if (IS_ERR_OR_NULL(sta))
4065 continue;
4066
4067 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4068 if (mvmsta->vif != vif)
4069 continue;
4070
4071 /* make sure only TDLS peers or the AP are flushed */
4072 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4073
4074 if (drop) {
4075 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
4076 IWL_ERR(mvm, "flush request fail\n");
4077 } else {
4078 msk |= mvmsta->tfd_queue_msk;
4079 if (iwl_mvm_has_new_tx_api(mvm))
4080 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4081 }
4082 }
4083
4084 mutex_unlock(&mvm->mutex);
4085
4086 /* this can take a while, and we may need/want other operations
4087 * to succeed while doing this, so do it without the mutex held
4088 */
4089 if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4090 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4091 }
4092
4093 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4094 struct survey_info *survey)
4095 {
4096 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4097 int ret;
4098
4099 memset(survey, 0, sizeof(*survey));
4100
4101 /* only support global statistics right now */
4102 if (idx != 0)
4103 return -ENOENT;
4104
4105 if (!fw_has_capa(&mvm->fw->ucode_capa,
4106 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4107 return -ENOENT;
4108
4109 mutex_lock(&mvm->mutex);
4110
4111 if (iwl_mvm_firmware_running(mvm)) {
4112 ret = iwl_mvm_request_statistics(mvm, false);
4113 if (ret)
4114 goto out;
4115 }
4116
4117 survey->filled = SURVEY_INFO_TIME |
4118 SURVEY_INFO_TIME_RX |
4119 SURVEY_INFO_TIME_TX |
4120 SURVEY_INFO_TIME_SCAN;
4121 survey->time = mvm->accu_radio_stats.on_time_rf +
4122 mvm->radio_stats.on_time_rf;
4123 do_div(survey->time, USEC_PER_MSEC);
4124
4125 survey->time_rx = mvm->accu_radio_stats.rx_time +
4126 mvm->radio_stats.rx_time;
4127 do_div(survey->time_rx, USEC_PER_MSEC);
4128
4129 survey->time_tx = mvm->accu_radio_stats.tx_time +
4130 mvm->radio_stats.tx_time;
4131 do_div(survey->time_tx, USEC_PER_MSEC);
4132
4133 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4134 mvm->radio_stats.on_time_scan;
4135 do_div(survey->time_scan, USEC_PER_MSEC);
4136
4137 ret = 0;
4138 out:
4139 mutex_unlock(&mvm->mutex);
4140 return ret;
4141 }
4142
4143 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4144 struct ieee80211_vif *vif,
4145 struct ieee80211_sta *sta,
4146 struct station_info *sinfo)
4147 {
4148 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4149 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4150 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4151
4152 if (mvmsta->avg_energy) {
4153 sinfo->signal_avg = mvmsta->avg_energy;
4154 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
4155 }
4156
4157 if (!fw_has_capa(&mvm->fw->ucode_capa,
4158 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4159 return;
4160
4161 /* if beacon filtering isn't on mac80211 does it anyway */
4162 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4163 return;
4164
4165 if (!vif->bss_conf.assoc)
4166 return;
4167
4168 mutex_lock(&mvm->mutex);
4169
4170 if (mvmvif->ap_sta_id != mvmsta->sta_id)
4171 goto unlock;
4172
4173 if (iwl_mvm_request_statistics(mvm, false))
4174 goto unlock;
4175
4176 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4177 mvmvif->beacon_stats.accu_num_beacons;
4178 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
4179 if (mvmvif->beacon_stats.avg_signal) {
4180 /* firmware only reports a value after RXing a few beacons */
4181 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4182 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4183 }
4184 unlock:
4185 mutex_unlock(&mvm->mutex);
4186 }
4187
4188 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4189 struct ieee80211_vif *vif,
4190 const struct ieee80211_event *event)
4191 {
4192 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \
4193 do { \
4194 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \
4195 break; \
4196 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \
4197 } while (0)
4198
4199 struct iwl_fw_dbg_trigger_tlv *trig;
4200 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4201
4202 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4203 return;
4204
4205 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4206 trig_mlme = (void *)trig->data;
4207 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
4208 ieee80211_vif_to_wdev(vif), trig))
4209 return;
4210
4211 if (event->u.mlme.data == ASSOC_EVENT) {
4212 if (event->u.mlme.status == MLME_DENIED)
4213 CHECK_MLME_TRIGGER(stop_assoc_denied,
4214 "DENIED ASSOC: reason %d",
4215 event->u.mlme.reason);
4216 else if (event->u.mlme.status == MLME_TIMEOUT)
4217 CHECK_MLME_TRIGGER(stop_assoc_timeout,
4218 "ASSOC TIMEOUT");
4219 } else if (event->u.mlme.data == AUTH_EVENT) {
4220 if (event->u.mlme.status == MLME_DENIED)
4221 CHECK_MLME_TRIGGER(stop_auth_denied,
4222 "DENIED AUTH: reason %d",
4223 event->u.mlme.reason);
4224 else if (event->u.mlme.status == MLME_TIMEOUT)
4225 CHECK_MLME_TRIGGER(stop_auth_timeout,
4226 "AUTH TIMEOUT");
4227 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4228 CHECK_MLME_TRIGGER(stop_rx_deauth,
4229 "DEAUTH RX %d", event->u.mlme.reason);
4230 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4231 CHECK_MLME_TRIGGER(stop_tx_deauth,
4232 "DEAUTH TX %d", event->u.mlme.reason);
4233 }
4234 #undef CHECK_MLME_TRIGGER
4235 }
4236
4237 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4238 struct ieee80211_vif *vif,
4239 const struct ieee80211_event *event)
4240 {
4241 struct iwl_fw_dbg_trigger_tlv *trig;
4242 struct iwl_fw_dbg_trigger_ba *ba_trig;
4243
4244 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4245 return;
4246
4247 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4248 ba_trig = (void *)trig->data;
4249 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
4250 ieee80211_vif_to_wdev(vif), trig))
4251 return;
4252
4253 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4254 return;
4255
4256 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
4257 "BAR received from %pM, tid %d, ssn %d",
4258 event->u.ba.sta->addr, event->u.ba.tid,
4259 event->u.ba.ssn);
4260 }
4261
4262 static void
4263 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4264 struct ieee80211_vif *vif,
4265 const struct ieee80211_event *event)
4266 {
4267 struct iwl_fw_dbg_trigger_tlv *trig;
4268 struct iwl_fw_dbg_trigger_ba *ba_trig;
4269
4270 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4271 return;
4272
4273 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4274 ba_trig = (void *)trig->data;
4275 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
4276 ieee80211_vif_to_wdev(vif), trig))
4277 return;
4278
4279 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4280 return;
4281
4282 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
4283 "Frame from %pM timed out, tid %d",
4284 event->u.ba.sta->addr, event->u.ba.tid);
4285 }
4286
4287 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4288 struct ieee80211_vif *vif,
4289 const struct ieee80211_event *event)
4290 {
4291 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4292
4293 switch (event->type) {
4294 case MLME_EVENT:
4295 iwl_mvm_event_mlme_callback(mvm, vif, event);
4296 break;
4297 case BAR_RX_EVENT:
4298 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4299 break;
4300 case BA_FRAME_TIMEOUT:
4301 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4302 break;
4303 default:
4304 break;
4305 }
4306 }
4307
4308 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4309 struct iwl_mvm_internal_rxq_notif *notif,
4310 u32 size)
4311 {
4312 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4313 int ret;
4314
4315 lockdep_assert_held(&mvm->mutex);
4316
4317 /* TODO - remove a000 disablement when we have RXQ config API */
4318 if (!iwl_mvm_has_new_rx_api(mvm) ||
4319 mvm->trans->cfg->device_family == IWL_DEVICE_FAMILY_A000)
4320 return;
4321
4322 notif->cookie = mvm->queue_sync_cookie;
4323
4324 if (notif->sync)
4325 atomic_set(&mvm->queue_sync_counter,
4326 mvm->trans->num_rx_queues);
4327
4328 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4329 if (ret) {
4330 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4331 goto out;
4332 }
4333
4334 if (notif->sync) {
4335 ret = wait_event_timeout(mvm->rx_sync_waitq,
4336 atomic_read(&mvm->queue_sync_counter) == 0 ||
4337 iwl_mvm_is_radio_killed(mvm),
4338 HZ);
4339 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
4340 }
4341
4342 out:
4343 atomic_set(&mvm->queue_sync_counter, 0);
4344 mvm->queue_sync_cookie++;
4345 }
4346
4347 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4348 {
4349 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4350 struct iwl_mvm_internal_rxq_notif data = {
4351 .type = IWL_MVM_RXQ_EMPTY,
4352 .sync = 1,
4353 };
4354
4355 mutex_lock(&mvm->mutex);
4356 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4357 mutex_unlock(&mvm->mutex);
4358 }
4359
4360 const struct ieee80211_ops iwl_mvm_hw_ops = {
4361 .tx = iwl_mvm_mac_tx,
4362 .ampdu_action = iwl_mvm_mac_ampdu_action,
4363 .start = iwl_mvm_mac_start,
4364 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4365 .stop = iwl_mvm_mac_stop,
4366 .add_interface = iwl_mvm_mac_add_interface,
4367 .remove_interface = iwl_mvm_mac_remove_interface,
4368 .config = iwl_mvm_mac_config,
4369 .prepare_multicast = iwl_mvm_prepare_multicast,
4370 .configure_filter = iwl_mvm_configure_filter,
4371 .config_iface_filter = iwl_mvm_config_iface_filter,
4372 .bss_info_changed = iwl_mvm_bss_info_changed,
4373 .hw_scan = iwl_mvm_mac_hw_scan,
4374 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4375 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4376 .sta_state = iwl_mvm_mac_sta_state,
4377 .sta_notify = iwl_mvm_mac_sta_notify,
4378 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4379 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4380 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4381 .sta_rc_update = iwl_mvm_sta_rc_update,
4382 .conf_tx = iwl_mvm_mac_conf_tx,
4383 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4384 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4385 .flush = iwl_mvm_mac_flush,
4386 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4387 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4388 .set_key = iwl_mvm_mac_set_key,
4389 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4390 .remain_on_channel = iwl_mvm_roc,
4391 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4392 .add_chanctx = iwl_mvm_add_chanctx,
4393 .remove_chanctx = iwl_mvm_remove_chanctx,
4394 .change_chanctx = iwl_mvm_change_chanctx,
4395 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4396 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4397 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4398
4399 .start_ap = iwl_mvm_start_ap_ibss,
4400 .stop_ap = iwl_mvm_stop_ap_ibss,
4401 .join_ibss = iwl_mvm_start_ap_ibss,
4402 .leave_ibss = iwl_mvm_stop_ap_ibss,
4403
4404 .tx_last_beacon = iwl_mvm_tx_last_beacon,
4405
4406 .set_tim = iwl_mvm_set_tim,
4407
4408 .channel_switch = iwl_mvm_channel_switch,
4409 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4410 .post_channel_switch = iwl_mvm_post_channel_switch,
4411
4412 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4413 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4414 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4415
4416 .event_callback = iwl_mvm_mac_event_callback,
4417
4418 .sync_rx_queues = iwl_mvm_sync_rx_queues,
4419
4420 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4421
4422 #ifdef CONFIG_PM_SLEEP
4423 /* look at d3.c */
4424 .suspend = iwl_mvm_suspend,
4425 .resume = iwl_mvm_resume,
4426 .set_wakeup = iwl_mvm_set_wakeup,
4427 .set_rekey_data = iwl_mvm_set_rekey_data,
4428 #if IS_ENABLED(CONFIG_IPV6)
4429 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4430 #endif
4431 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4432 #endif
4433 .get_survey = iwl_mvm_mac_get_survey,
4434 .sta_statistics = iwl_mvm_mac_sta_statistics,
4435 };
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