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Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
[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
1081 /* keep statistics ticking */
1082 iwl_mvm_accu_radio_stats(mvm);
1083 }
1084
1085 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1086 {
1087 int ret;
1088
1089 lockdep_assert_held(&mvm->mutex);
1090
1091 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
1092 /*
1093 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
1094 * so later code will - from now on - see that we're doing it.
1095 */
1096 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1097 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1098 /* Clean up some internal and mac80211 state on restart */
1099 iwl_mvm_restart_cleanup(mvm);
1100 } else {
1101 /* Hold the reference to prevent runtime suspend while
1102 * the start procedure runs. It's a bit confusing
1103 * that the UCODE_DOWN reference is taken, but it just
1104 * means "UCODE is not UP yet". ( TODO: rename this
1105 * reference).
1106 */
1107 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1108 }
1109 ret = iwl_mvm_up(mvm);
1110
1111 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1112 /* Something went wrong - we need to finish some cleanup
1113 * that normally iwl_mvm_mac_restart_complete() below
1114 * would do.
1115 */
1116 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1117 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1118 }
1119
1120 return ret;
1121 }
1122
1123 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1124 {
1125 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1126 int ret;
1127
1128 /* Some hw restart cleanups must not hold the mutex */
1129 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1130 /*
1131 * Make sure we are out of d0i3. This is needed
1132 * to make sure the reference accounting is correct
1133 * (and there is no stale d0i3_exit_work).
1134 */
1135 wait_event_timeout(mvm->d0i3_exit_waitq,
1136 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1137 &mvm->status),
1138 HZ);
1139 }
1140
1141 mutex_lock(&mvm->mutex);
1142 ret = __iwl_mvm_mac_start(mvm);
1143 mutex_unlock(&mvm->mutex);
1144
1145 return ret;
1146 }
1147
1148 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1149 {
1150 int ret;
1151
1152 mutex_lock(&mvm->mutex);
1153
1154 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1155 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1156 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1157 if (ret)
1158 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1159 ret);
1160
1161 /* allow transport/FW low power modes */
1162 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1163
1164 /*
1165 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1166 * of packets the FW sent out, so we must reconnect.
1167 */
1168 iwl_mvm_teardown_tdls_peers(mvm);
1169
1170 mutex_unlock(&mvm->mutex);
1171 }
1172
1173 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1174 {
1175 if (iwl_mvm_is_d0i3_supported(mvm) &&
1176 iwl_mvm_enter_d0i3_on_suspend(mvm))
1177 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1178 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1179 &mvm->status),
1180 HZ),
1181 "D0i3 exit on resume timed out\n");
1182 }
1183
1184 static void
1185 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1186 enum ieee80211_reconfig_type reconfig_type)
1187 {
1188 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1189
1190 switch (reconfig_type) {
1191 case IEEE80211_RECONFIG_TYPE_RESTART:
1192 iwl_mvm_restart_complete(mvm);
1193 break;
1194 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1195 iwl_mvm_resume_complete(mvm);
1196 break;
1197 }
1198 }
1199
1200 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1201 {
1202 lockdep_assert_held(&mvm->mutex);
1203
1204 /* firmware counters are obviously reset now, but we shouldn't
1205 * partially track so also clear the fw_reset_accu counters.
1206 */
1207 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1208
1209 /* async_handlers_wk is now blocked */
1210
1211 /*
1212 * The work item could be running or queued if the
1213 * ROC time event stops just as we get here.
1214 */
1215 flush_work(&mvm->roc_done_wk);
1216
1217 iwl_mvm_stop_device(mvm);
1218
1219 iwl_mvm_async_handlers_purge(mvm);
1220 /* async_handlers_list is empty and will stay empty: HW is stopped */
1221
1222 /* the fw is stopped, the aux sta is dead: clean up driver state */
1223 iwl_mvm_del_aux_sta(mvm);
1224
1225 /*
1226 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1227 * won't be called in this case).
1228 * But make sure to cleanup interfaces that have gone down before/during
1229 * HW restart was requested.
1230 */
1231 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1232 ieee80211_iterate_interfaces(mvm->hw, 0,
1233 iwl_mvm_cleanup_iterator, mvm);
1234
1235 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1236 * make sure there's nothing left there and warn if any is found.
1237 */
1238 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1239 int i;
1240
1241 for (i = 0; i < mvm->max_scans; i++) {
1242 if (WARN_ONCE(mvm->scan_uid_status[i],
1243 "UMAC scan UID %d status was not cleaned\n",
1244 i))
1245 mvm->scan_uid_status[i] = 0;
1246 }
1247 }
1248 }
1249
1250 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1251 {
1252 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1253
1254 flush_work(&mvm->d0i3_exit_work);
1255 flush_work(&mvm->async_handlers_wk);
1256 flush_work(&mvm->add_stream_wk);
1257
1258 /*
1259 * Lock and clear the firmware running bit here already, so that
1260 * new commands coming in elsewhere, e.g. from debugfs, will not
1261 * be able to proceed. This is important here because one of those
1262 * debugfs files causes the firmware dump to be triggered, and if we
1263 * don't stop debugfs accesses before canceling that it could be
1264 * retriggered after we flush it but before we've cleared the bit.
1265 */
1266 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1267
1268 iwl_fw_cancel_dump(&mvm->fwrt);
1269 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1270 cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1271 iwl_fw_free_dump_desc(&mvm->fwrt);
1272
1273 mutex_lock(&mvm->mutex);
1274 __iwl_mvm_mac_stop(mvm);
1275 mutex_unlock(&mvm->mutex);
1276
1277 /*
1278 * The worker might have been waiting for the mutex, let it run and
1279 * discover that its list is now empty.
1280 */
1281 cancel_work_sync(&mvm->async_handlers_wk);
1282 }
1283
1284 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1285 {
1286 u16 i;
1287
1288 lockdep_assert_held(&mvm->mutex);
1289
1290 for (i = 0; i < NUM_PHY_CTX; i++)
1291 if (!mvm->phy_ctxts[i].ref)
1292 return &mvm->phy_ctxts[i];
1293
1294 IWL_ERR(mvm, "No available PHY context\n");
1295 return NULL;
1296 }
1297
1298 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1299 s16 tx_power)
1300 {
1301 struct iwl_dev_tx_power_cmd cmd = {
1302 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1303 .v3.mac_context_id =
1304 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1305 .v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1306 };
1307 int len = sizeof(cmd);
1308
1309 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1310 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1311
1312 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1313 len = sizeof(cmd.v3);
1314
1315 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1316 }
1317
1318 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1319 struct ieee80211_vif *vif)
1320 {
1321 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1322 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1323 int ret;
1324
1325 mvmvif->mvm = mvm;
1326
1327 /*
1328 * make sure D0i3 exit is completed, otherwise a target access
1329 * during tx queue configuration could be done when still in
1330 * D0i3 state.
1331 */
1332 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1333 if (ret)
1334 return ret;
1335
1336 /*
1337 * Not much to do here. The stack will not allow interface
1338 * types or combinations that we didn't advertise, so we
1339 * don't really have to check the types.
1340 */
1341
1342 mutex_lock(&mvm->mutex);
1343
1344 /* make sure that beacon statistics don't go backwards with FW reset */
1345 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1346 mvmvif->beacon_stats.accu_num_beacons +=
1347 mvmvif->beacon_stats.num_beacons;
1348
1349 /* Allocate resources for the MAC context, and add it to the fw */
1350 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1351 if (ret)
1352 goto out_unlock;
1353
1354 /* Counting number of interfaces is needed for legacy PM */
1355 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1356 mvm->vif_count++;
1357
1358 /*
1359 * The AP binding flow can be done only after the beacon
1360 * template is configured (which happens only in the mac80211
1361 * start_ap() flow), and adding the broadcast station can happen
1362 * only after the binding.
1363 * In addition, since modifying the MAC before adding a bcast
1364 * station is not allowed by the FW, delay the adding of MAC context to
1365 * the point where we can also add the bcast station.
1366 * In short: there's not much we can do at this point, other than
1367 * allocating resources :)
1368 */
1369 if (vif->type == NL80211_IFTYPE_AP ||
1370 vif->type == NL80211_IFTYPE_ADHOC) {
1371 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1372 if (ret) {
1373 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1374 goto out_release;
1375 }
1376
1377 /*
1378 * Only queue for this station is the mcast queue,
1379 * which shouldn't be in TFD mask anyway
1380 */
1381 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1382 0, vif->type,
1383 IWL_STA_MULTICAST);
1384 if (ret)
1385 goto out_release;
1386
1387 iwl_mvm_vif_dbgfs_register(mvm, vif);
1388 goto out_unlock;
1389 }
1390
1391 mvmvif->features |= hw->netdev_features;
1392
1393 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1394 if (ret)
1395 goto out_release;
1396
1397 ret = iwl_mvm_power_update_mac(mvm);
1398 if (ret)
1399 goto out_remove_mac;
1400
1401 /* beacon filtering */
1402 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1403 if (ret)
1404 goto out_remove_mac;
1405
1406 if (!mvm->bf_allowed_vif &&
1407 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1408 mvm->bf_allowed_vif = mvmvif;
1409 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1410 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1411 }
1412
1413 /*
1414 * P2P_DEVICE interface does not have a channel context assigned to it,
1415 * so a dedicated PHY context is allocated to it and the corresponding
1416 * MAC context is bound to it at this stage.
1417 */
1418 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1419
1420 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1421 if (!mvmvif->phy_ctxt) {
1422 ret = -ENOSPC;
1423 goto out_free_bf;
1424 }
1425
1426 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1427 ret = iwl_mvm_binding_add_vif(mvm, vif);
1428 if (ret)
1429 goto out_unref_phy;
1430
1431 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif);
1432 if (ret)
1433 goto out_unbind;
1434
1435 /* Save a pointer to p2p device vif, so it can later be used to
1436 * update the p2p device MAC when a GO is started/stopped */
1437 mvm->p2p_device_vif = vif;
1438 }
1439
1440 iwl_mvm_vif_dbgfs_register(mvm, vif);
1441 goto out_unlock;
1442
1443 out_unbind:
1444 iwl_mvm_binding_remove_vif(mvm, vif);
1445 out_unref_phy:
1446 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1447 out_free_bf:
1448 if (mvm->bf_allowed_vif == mvmvif) {
1449 mvm->bf_allowed_vif = NULL;
1450 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1451 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1452 }
1453 out_remove_mac:
1454 mvmvif->phy_ctxt = NULL;
1455 iwl_mvm_mac_ctxt_remove(mvm, vif);
1456 out_release:
1457 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1458 mvm->vif_count--;
1459 out_unlock:
1460 mutex_unlock(&mvm->mutex);
1461
1462 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1463
1464 return ret;
1465 }
1466
1467 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1468 struct ieee80211_vif *vif)
1469 {
1470 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1471 /*
1472 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1473 * We assume here that all the packets sent to the OFFCHANNEL
1474 * queue are sent in ROC session.
1475 */
1476 flush_work(&mvm->roc_done_wk);
1477 }
1478 }
1479
1480 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1481 struct ieee80211_vif *vif)
1482 {
1483 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1484 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1485
1486 iwl_mvm_prepare_mac_removal(mvm, vif);
1487
1488 mutex_lock(&mvm->mutex);
1489
1490 if (mvm->bf_allowed_vif == mvmvif) {
1491 mvm->bf_allowed_vif = NULL;
1492 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1493 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1494 }
1495
1496 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1497
1498 /*
1499 * For AP/GO interface, the tear down of the resources allocated to the
1500 * interface is be handled as part of the stop_ap flow.
1501 */
1502 if (vif->type == NL80211_IFTYPE_AP ||
1503 vif->type == NL80211_IFTYPE_ADHOC) {
1504 #ifdef CONFIG_NL80211_TESTMODE
1505 if (vif == mvm->noa_vif) {
1506 mvm->noa_vif = NULL;
1507 mvm->noa_duration = 0;
1508 }
1509 #endif
1510 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1511 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1512 goto out_release;
1513 }
1514
1515 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1516 mvm->p2p_device_vif = NULL;
1517 iwl_mvm_rm_p2p_bcast_sta(mvm, vif);
1518 iwl_mvm_binding_remove_vif(mvm, vif);
1519 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1520 mvmvif->phy_ctxt = NULL;
1521 }
1522
1523 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1524 mvm->vif_count--;
1525
1526 iwl_mvm_power_update_mac(mvm);
1527 iwl_mvm_mac_ctxt_remove(mvm, vif);
1528
1529 out_release:
1530 mutex_unlock(&mvm->mutex);
1531 }
1532
1533 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1534 {
1535 return 0;
1536 }
1537
1538 struct iwl_mvm_mc_iter_data {
1539 struct iwl_mvm *mvm;
1540 int port_id;
1541 };
1542
1543 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1544 struct ieee80211_vif *vif)
1545 {
1546 struct iwl_mvm_mc_iter_data *data = _data;
1547 struct iwl_mvm *mvm = data->mvm;
1548 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1549 struct iwl_host_cmd hcmd = {
1550 .id = MCAST_FILTER_CMD,
1551 .flags = CMD_ASYNC,
1552 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1553 };
1554 int ret, len;
1555
1556 /* if we don't have free ports, mcast frames will be dropped */
1557 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1558 return;
1559
1560 if (vif->type != NL80211_IFTYPE_STATION ||
1561 !vif->bss_conf.assoc)
1562 return;
1563
1564 cmd->port_id = data->port_id++;
1565 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1566 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1567
1568 hcmd.len[0] = len;
1569 hcmd.data[0] = cmd;
1570
1571 ret = iwl_mvm_send_cmd(mvm, &hcmd);
1572 if (ret)
1573 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1574 }
1575
1576 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1577 {
1578 struct iwl_mvm_mc_iter_data iter_data = {
1579 .mvm = mvm,
1580 };
1581
1582 lockdep_assert_held(&mvm->mutex);
1583
1584 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1585 return;
1586
1587 ieee80211_iterate_active_interfaces_atomic(
1588 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1589 iwl_mvm_mc_iface_iterator, &iter_data);
1590 }
1591
1592 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1593 struct netdev_hw_addr_list *mc_list)
1594 {
1595 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1596 struct iwl_mcast_filter_cmd *cmd;
1597 struct netdev_hw_addr *addr;
1598 int addr_count;
1599 bool pass_all;
1600 int len;
1601
1602 addr_count = netdev_hw_addr_list_count(mc_list);
1603 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1604 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1605 if (pass_all)
1606 addr_count = 0;
1607
1608 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1609 cmd = kzalloc(len, GFP_ATOMIC);
1610 if (!cmd)
1611 return 0;
1612
1613 if (pass_all) {
1614 cmd->pass_all = 1;
1615 return (u64)(unsigned long)cmd;
1616 }
1617
1618 netdev_hw_addr_list_for_each(addr, mc_list) {
1619 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1620 cmd->count, addr->addr);
1621 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1622 addr->addr, ETH_ALEN);
1623 cmd->count++;
1624 }
1625
1626 return (u64)(unsigned long)cmd;
1627 }
1628
1629 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1630 unsigned int changed_flags,
1631 unsigned int *total_flags,
1632 u64 multicast)
1633 {
1634 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1635 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1636
1637 mutex_lock(&mvm->mutex);
1638
1639 /* replace previous configuration */
1640 kfree(mvm->mcast_filter_cmd);
1641 mvm->mcast_filter_cmd = cmd;
1642
1643 if (!cmd)
1644 goto out;
1645
1646 if (changed_flags & FIF_ALLMULTI)
1647 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);
1648
1649 if (cmd->pass_all)
1650 cmd->count = 0;
1651
1652 iwl_mvm_recalc_multicast(mvm);
1653 out:
1654 mutex_unlock(&mvm->mutex);
1655 *total_flags = 0;
1656 }
1657
1658 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1659 struct ieee80211_vif *vif,
1660 unsigned int filter_flags,
1661 unsigned int changed_flags)
1662 {
1663 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1664
1665 /* We support only filter for probe requests */
1666 if (!(changed_flags & FIF_PROBE_REQ))
1667 return;
1668
1669 /* Supported only for p2p client interfaces */
1670 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1671 !vif->p2p)
1672 return;
1673
1674 mutex_lock(&mvm->mutex);
1675 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1676 mutex_unlock(&mvm->mutex);
1677 }
1678
1679 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1680 struct iwl_bcast_iter_data {
1681 struct iwl_mvm *mvm;
1682 struct iwl_bcast_filter_cmd *cmd;
1683 u8 current_filter;
1684 };
1685
1686 static void
1687 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1688 const struct iwl_fw_bcast_filter *in_filter,
1689 struct iwl_fw_bcast_filter *out_filter)
1690 {
1691 struct iwl_fw_bcast_filter_attr *attr;
1692 int i;
1693
1694 memcpy(out_filter, in_filter, sizeof(*out_filter));
1695
1696 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1697 attr = &out_filter->attrs[i];
1698
1699 if (!attr->mask)
1700 break;
1701
1702 switch (attr->reserved1) {
1703 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1704 if (vif->bss_conf.arp_addr_cnt != 1) {
1705 attr->mask = 0;
1706 continue;
1707 }
1708
1709 attr->val = vif->bss_conf.arp_addr_list[0];
1710 break;
1711 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1712 attr->val = *(__be32 *)&vif->addr[2];
1713 break;
1714 default:
1715 break;
1716 }
1717 attr->reserved1 = 0;
1718 out_filter->num_attrs++;
1719 }
1720 }
1721
1722 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1723 struct ieee80211_vif *vif)
1724 {
1725 struct iwl_bcast_iter_data *data = _data;
1726 struct iwl_mvm *mvm = data->mvm;
1727 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1728 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1729 struct iwl_fw_bcast_mac *bcast_mac;
1730 int i;
1731
1732 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1733 return;
1734
1735 bcast_mac = &cmd->macs[mvmvif->id];
1736
1737 /*
1738 * enable filtering only for associated stations, but not for P2P
1739 * Clients
1740 */
1741 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1742 !vif->bss_conf.assoc)
1743 return;
1744
1745 bcast_mac->default_discard = 1;
1746
1747 /* copy all configured filters */
1748 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1749 /*
1750 * Make sure we don't exceed our filters limit.
1751 * if there is still a valid filter to be configured,
1752 * be on the safe side and just allow bcast for this mac.
1753 */
1754 if (WARN_ON_ONCE(data->current_filter >=
1755 ARRAY_SIZE(cmd->filters))) {
1756 bcast_mac->default_discard = 0;
1757 bcast_mac->attached_filters = 0;
1758 break;
1759 }
1760
1761 iwl_mvm_set_bcast_filter(vif,
1762 &mvm->bcast_filters[i],
1763 &cmd->filters[data->current_filter]);
1764
1765 /* skip current filter if it contains no attributes */
1766 if (!cmd->filters[data->current_filter].num_attrs)
1767 continue;
1768
1769 /* attach the filter to current mac */
1770 bcast_mac->attached_filters |=
1771 cpu_to_le16(BIT(data->current_filter));
1772
1773 data->current_filter++;
1774 }
1775 }
1776
1777 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1778 struct iwl_bcast_filter_cmd *cmd)
1779 {
1780 struct iwl_bcast_iter_data iter_data = {
1781 .mvm = mvm,
1782 .cmd = cmd,
1783 };
1784
1785 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1786 return false;
1787
1788 memset(cmd, 0, sizeof(*cmd));
1789 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1790 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1791
1792 #ifdef CONFIG_IWLWIFI_DEBUGFS
1793 /* use debugfs filters/macs if override is configured */
1794 if (mvm->dbgfs_bcast_filtering.override) {
1795 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1796 sizeof(cmd->filters));
1797 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1798 sizeof(cmd->macs));
1799 return true;
1800 }
1801 #endif
1802
1803 /* if no filters are configured, do nothing */
1804 if (!mvm->bcast_filters)
1805 return false;
1806
1807 /* configure and attach these filters for each associated sta vif */
1808 ieee80211_iterate_active_interfaces(
1809 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1810 iwl_mvm_bcast_filter_iterator, &iter_data);
1811
1812 return true;
1813 }
1814
1815 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1816 {
1817 struct iwl_bcast_filter_cmd cmd;
1818
1819 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1820 return 0;
1821
1822 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1823 return 0;
1824
1825 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1826 sizeof(cmd), &cmd);
1827 }
1828 #else
1829 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1830 {
1831 return 0;
1832 }
1833 #endif
1834
1835 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1836 struct ieee80211_vif *vif)
1837 {
1838 struct iwl_mu_group_mgmt_cmd cmd = {};
1839
1840 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1841 WLAN_MEMBERSHIP_LEN);
1842 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1843 WLAN_USER_POSITION_LEN);
1844
1845 return iwl_mvm_send_cmd_pdu(mvm,
1846 WIDE_ID(DATA_PATH_GROUP,
1847 UPDATE_MU_GROUPS_CMD),
1848 0, sizeof(cmd), &cmd);
1849 }
1850
1851 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1852 struct ieee80211_vif *vif)
1853 {
1854 if (vif->mu_mimo_owner) {
1855 struct iwl_mu_group_mgmt_notif *notif = _data;
1856
1857 /*
1858 * MU-MIMO Group Id action frame is little endian. We treat
1859 * the data received from firmware as if it came from the
1860 * action frame, so no conversion is needed.
1861 */
1862 ieee80211_update_mu_groups(vif,
1863 (u8 *)&notif->membership_status,
1864 (u8 *)&notif->user_position);
1865 }
1866 }
1867
1868 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1869 struct iwl_rx_cmd_buffer *rxb)
1870 {
1871 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1872 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1873
1874 ieee80211_iterate_active_interfaces_atomic(
1875 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1876 iwl_mvm_mu_mimo_iface_iterator, notif);
1877 }
1878
1879 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1880 struct ieee80211_vif *vif,
1881 struct ieee80211_bss_conf *bss_conf,
1882 u32 changes)
1883 {
1884 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1885 int ret;
1886
1887 /*
1888 * Re-calculate the tsf id, as the master-slave relations depend on the
1889 * beacon interval, which was not known when the station interface was
1890 * added.
1891 */
1892 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1893 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1894
1895 if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1896 mvmvif->lqm_active)
1897 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1898 0, 0);
1899
1900 /*
1901 * If we're not associated yet, take the (new) BSSID before associating
1902 * so the firmware knows. If we're already associated, then use the old
1903 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1904 * branch for disassociation below.
1905 */
1906 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1907 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1908
1909 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1910 if (ret)
1911 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1912
1913 /* after sending it once, adopt mac80211 data */
1914 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1915 mvmvif->associated = bss_conf->assoc;
1916
1917 if (changes & BSS_CHANGED_ASSOC) {
1918 if (bss_conf->assoc) {
1919 /* clear statistics to get clean beacon counter */
1920 iwl_mvm_request_statistics(mvm, true);
1921 memset(&mvmvif->beacon_stats, 0,
1922 sizeof(mvmvif->beacon_stats));
1923
1924 /* add quota for this interface */
1925 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1926 if (ret) {
1927 IWL_ERR(mvm, "failed to update quotas\n");
1928 return;
1929 }
1930
1931 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1932 &mvm->status)) {
1933 /*
1934 * If we're restarting then the firmware will
1935 * obviously have lost synchronisation with
1936 * the AP. It will attempt to synchronise by
1937 * itself, but we can make it more reliable by
1938 * scheduling a session protection time event.
1939 *
1940 * The firmware needs to receive a beacon to
1941 * catch up with synchronisation, use 110% of
1942 * the beacon interval.
1943 *
1944 * Set a large maximum delay to allow for more
1945 * than a single interface.
1946 */
1947 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1948 iwl_mvm_protect_session(mvm, vif, dur, dur,
1949 5 * dur, false);
1950 }
1951
1952 iwl_mvm_sf_update(mvm, vif, false);
1953 iwl_mvm_power_vif_assoc(mvm, vif);
1954 if (vif->p2p) {
1955 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1956 iwl_mvm_update_smps(mvm, vif,
1957 IWL_MVM_SMPS_REQ_PROT,
1958 IEEE80211_SMPS_DYNAMIC);
1959 }
1960 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
1961 /*
1962 * If update fails - SF might be running in associated
1963 * mode while disassociated - which is forbidden.
1964 */
1965 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1966 "Failed to update SF upon disassociation\n");
1967
1968 /*
1969 * If we get an assert during the connection (after the
1970 * station has been added, but before the vif is set
1971 * to associated), mac80211 will re-add the station and
1972 * then configure the vif. Since the vif is not
1973 * associated, we would remove the station here and
1974 * this would fail the recovery.
1975 */
1976 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1977 &mvm->status)) {
1978 /*
1979 * Remove AP station now that
1980 * the MAC is unassoc
1981 */
1982 ret = iwl_mvm_rm_sta_id(mvm, vif,
1983 mvmvif->ap_sta_id);
1984 if (ret)
1985 IWL_ERR(mvm,
1986 "failed to remove AP station\n");
1987
1988 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1989 mvm->d0i3_ap_sta_id =
1990 IWL_MVM_INVALID_STA;
1991 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1992 }
1993
1994 /* remove quota for this interface */
1995 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1996 if (ret)
1997 IWL_ERR(mvm, "failed to update quotas\n");
1998
1999 if (vif->p2p)
2000 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2001
2002 /* this will take the cleared BSSID from bss_conf */
2003 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2004 if (ret)
2005 IWL_ERR(mvm,
2006 "failed to update MAC %pM (clear after unassoc)\n",
2007 vif->addr);
2008 }
2009
2010 /*
2011 * The firmware tracks the MU-MIMO group on its own.
2012 * However, on HW restart we should restore this data.
2013 */
2014 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2015 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2016 ret = iwl_mvm_update_mu_groups(mvm, vif);
2017 if (ret)
2018 IWL_ERR(mvm,
2019 "failed to update VHT MU_MIMO groups\n");
2020 }
2021
2022 iwl_mvm_recalc_multicast(mvm);
2023 iwl_mvm_configure_bcast_filter(mvm);
2024
2025 /* reset rssi values */
2026 mvmvif->bf_data.ave_beacon_signal = 0;
2027
2028 iwl_mvm_bt_coex_vif_change(mvm);
2029 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2030 IEEE80211_SMPS_AUTOMATIC);
2031 if (fw_has_capa(&mvm->fw->ucode_capa,
2032 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2033 iwl_mvm_config_scan(mvm);
2034 }
2035
2036 if (changes & BSS_CHANGED_BEACON_INFO) {
2037 /*
2038 * We received a beacon from the associated AP so
2039 * remove the session protection.
2040 */
2041 iwl_mvm_stop_session_protection(mvm, vif);
2042
2043 iwl_mvm_sf_update(mvm, vif, false);
2044 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2045 }
2046
2047 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2048 /*
2049 * Send power command on every beacon change,
2050 * because we may have not enabled beacon abort yet.
2051 */
2052 BSS_CHANGED_BEACON_INFO)) {
2053 ret = iwl_mvm_power_update_mac(mvm);
2054 if (ret)
2055 IWL_ERR(mvm, "failed to update power mode\n");
2056 }
2057
2058 if (changes & BSS_CHANGED_TXPOWER) {
2059 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2060 bss_conf->txpower);
2061 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2062 }
2063
2064 if (changes & BSS_CHANGED_CQM) {
2065 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2066 /* reset cqm events tracking */
2067 mvmvif->bf_data.last_cqm_event = 0;
2068 if (mvmvif->bf_data.bf_enabled) {
2069 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2070 if (ret)
2071 IWL_ERR(mvm,
2072 "failed to update CQM thresholds\n");
2073 }
2074 }
2075
2076 if (changes & BSS_CHANGED_ARP_FILTER) {
2077 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2078 iwl_mvm_configure_bcast_filter(mvm);
2079 }
2080 }
2081
2082 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2083 struct ieee80211_vif *vif)
2084 {
2085 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2086 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2087 int ret;
2088
2089 /*
2090 * iwl_mvm_mac_ctxt_add() might read directly from the device
2091 * (the system time), so make sure it is available.
2092 */
2093 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2094 if (ret)
2095 return ret;
2096
2097 mutex_lock(&mvm->mutex);
2098
2099 /* Send the beacon template */
2100 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2101 if (ret)
2102 goto out_unlock;
2103
2104 /*
2105 * Re-calculate the tsf id, as the master-slave relations depend on the
2106 * beacon interval, which was not known when the AP interface was added.
2107 */
2108 if (vif->type == NL80211_IFTYPE_AP)
2109 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2110
2111 mvmvif->ap_assoc_sta_count = 0;
2112
2113 /* Add the mac context */
2114 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2115 if (ret)
2116 goto out_unlock;
2117
2118 /* Perform the binding */
2119 ret = iwl_mvm_binding_add_vif(mvm, vif);
2120 if (ret)
2121 goto out_remove;
2122
2123 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2124 if (ret)
2125 goto out_unbind;
2126
2127 /* Send the bcast station. At this stage the TBTT and DTIM time events
2128 * are added and applied to the scheduler */
2129 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2130 if (ret)
2131 goto out_rm_mcast;
2132
2133 /* must be set before quota calculations */
2134 mvmvif->ap_ibss_active = true;
2135
2136 /* power updated needs to be done before quotas */
2137 iwl_mvm_power_update_mac(mvm);
2138
2139 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2140 if (ret)
2141 goto out_quota_failed;
2142
2143 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2144 if (vif->p2p && mvm->p2p_device_vif)
2145 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2146
2147 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2148
2149 iwl_mvm_bt_coex_vif_change(mvm);
2150
2151 /* we don't support TDLS during DCM */
2152 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2153 iwl_mvm_teardown_tdls_peers(mvm);
2154
2155 goto out_unlock;
2156
2157 out_quota_failed:
2158 iwl_mvm_power_update_mac(mvm);
2159 mvmvif->ap_ibss_active = false;
2160 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2161 out_rm_mcast:
2162 iwl_mvm_rm_mcast_sta(mvm, vif);
2163 out_unbind:
2164 iwl_mvm_binding_remove_vif(mvm, vif);
2165 out_remove:
2166 iwl_mvm_mac_ctxt_remove(mvm, vif);
2167 out_unlock:
2168 mutex_unlock(&mvm->mutex);
2169 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2170 return ret;
2171 }
2172
2173 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2174 struct ieee80211_vif *vif)
2175 {
2176 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2177 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2178
2179 iwl_mvm_prepare_mac_removal(mvm, vif);
2180
2181 mutex_lock(&mvm->mutex);
2182
2183 /* Handle AP stop while in CSA */
2184 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2185 iwl_mvm_remove_time_event(mvm, mvmvif,
2186 &mvmvif->time_event_data);
2187 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2188 mvmvif->csa_countdown = false;
2189 }
2190
2191 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2192 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2193 mvm->csa_tx_block_bcn_timeout = 0;
2194 }
2195
2196 mvmvif->ap_ibss_active = false;
2197 mvm->ap_last_beacon_gp2 = 0;
2198
2199 iwl_mvm_bt_coex_vif_change(mvm);
2200
2201 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2202
2203 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2204 if (vif->p2p && mvm->p2p_device_vif)
2205 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2206
2207 iwl_mvm_update_quotas(mvm, false, NULL);
2208
2209 /*
2210 * This is not very nice, but the simplest:
2211 * For older FWs removing the mcast sta before the bcast station may
2212 * cause assert 0x2b00.
2213 * This is fixed in later FW (which will stop beaconing when removing
2214 * bcast station).
2215 * So make the order of removal depend on the TLV
2216 */
2217 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2218 iwl_mvm_rm_mcast_sta(mvm, vif);
2219 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2220 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2221 iwl_mvm_rm_mcast_sta(mvm, vif);
2222 iwl_mvm_binding_remove_vif(mvm, vif);
2223
2224 iwl_mvm_power_update_mac(mvm);
2225
2226 iwl_mvm_mac_ctxt_remove(mvm, vif);
2227
2228 mutex_unlock(&mvm->mutex);
2229 }
2230
2231 static void
2232 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2233 struct ieee80211_vif *vif,
2234 struct ieee80211_bss_conf *bss_conf,
2235 u32 changes)
2236 {
2237 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2238
2239 /* Changes will be applied when the AP/IBSS is started */
2240 if (!mvmvif->ap_ibss_active)
2241 return;
2242
2243 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2244 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2245 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2246 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2247
2248 /* Need to send a new beacon template to the FW */
2249 if (changes & BSS_CHANGED_BEACON &&
2250 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2251 IWL_WARN(mvm, "Failed updating beacon data\n");
2252
2253 if (changes & BSS_CHANGED_TXPOWER) {
2254 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2255 bss_conf->txpower);
2256 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2257 }
2258 }
2259
2260 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2261 struct ieee80211_vif *vif,
2262 struct ieee80211_bss_conf *bss_conf,
2263 u32 changes)
2264 {
2265 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2266
2267 /*
2268 * iwl_mvm_bss_info_changed_station() might call
2269 * iwl_mvm_protect_session(), which reads directly from
2270 * the device (the system time), so make sure it is available.
2271 */
2272 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2273 return;
2274
2275 mutex_lock(&mvm->mutex);
2276
2277 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2278 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2279
2280 switch (vif->type) {
2281 case NL80211_IFTYPE_STATION:
2282 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2283 break;
2284 case NL80211_IFTYPE_AP:
2285 case NL80211_IFTYPE_ADHOC:
2286 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2287 break;
2288 case NL80211_IFTYPE_MONITOR:
2289 if (changes & BSS_CHANGED_MU_GROUPS)
2290 iwl_mvm_update_mu_groups(mvm, vif);
2291 break;
2292 default:
2293 /* shouldn't happen */
2294 WARN_ON_ONCE(1);
2295 }
2296
2297 mutex_unlock(&mvm->mutex);
2298 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2299 }
2300
2301 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2302 struct ieee80211_vif *vif,
2303 struct ieee80211_scan_request *hw_req)
2304 {
2305 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2306 int ret;
2307
2308 if (hw_req->req.n_channels == 0 ||
2309 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2310 return -EINVAL;
2311
2312 mutex_lock(&mvm->mutex);
2313 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2314 mutex_unlock(&mvm->mutex);
2315
2316 return ret;
2317 }
2318
2319 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2320 struct ieee80211_vif *vif)
2321 {
2322 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2323
2324 mutex_lock(&mvm->mutex);
2325
2326 /* Due to a race condition, it's possible that mac80211 asks
2327 * us to stop a hw_scan when it's already stopped. This can
2328 * happen, for instance, if we stopped the scan ourselves,
2329 * called ieee80211_scan_completed() and the userspace called
2330 * cancel scan scan before ieee80211_scan_work() could run.
2331 * To handle that, simply return if the scan is not running.
2332 */
2333 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2334 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2335
2336 mutex_unlock(&mvm->mutex);
2337 }
2338
2339 static void
2340 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2341 struct ieee80211_sta *sta, u16 tids,
2342 int num_frames,
2343 enum ieee80211_frame_release_type reason,
2344 bool more_data)
2345 {
2346 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2347
2348 /* Called when we need to transmit (a) frame(s) from mac80211 */
2349
2350 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2351 tids, more_data, false);
2352 }
2353
2354 static void
2355 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2356 struct ieee80211_sta *sta, u16 tids,
2357 int num_frames,
2358 enum ieee80211_frame_release_type reason,
2359 bool more_data)
2360 {
2361 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2362
2363 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2364
2365 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2366 tids, more_data, true);
2367 }
2368
2369 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2370 enum sta_notify_cmd cmd,
2371 struct ieee80211_sta *sta)
2372 {
2373 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2374 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2375 unsigned long txqs = 0, tids = 0;
2376 int tid;
2377
2378 /*
2379 * If we have TVQM then we get too high queue numbers - luckily
2380 * we really shouldn't get here with that because such hardware
2381 * should have firmware supporting buffer station offload.
2382 */
2383 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
2384 return;
2385
2386 spin_lock_bh(&mvmsta->lock);
2387 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2388 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2389
2390 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2391 continue;
2392
2393 __set_bit(tid_data->txq_id, &txqs);
2394
2395 if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2396 continue;
2397
2398 __set_bit(tid, &tids);
2399 }
2400
2401 switch (cmd) {
2402 case STA_NOTIFY_SLEEP:
2403 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2404 ieee80211_sta_set_buffered(sta, tid, true);
2405
2406 if (txqs)
2407 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2408 /*
2409 * The fw updates the STA to be asleep. Tx packets on the Tx
2410 * queues to this station will not be transmitted. The fw will
2411 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2412 */
2413 break;
2414 case STA_NOTIFY_AWAKE:
2415 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2416 break;
2417
2418 if (txqs)
2419 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2420 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2421 break;
2422 default:
2423 break;
2424 }
2425 spin_unlock_bh(&mvmsta->lock);
2426 }
2427
2428 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2429 struct ieee80211_vif *vif,
2430 enum sta_notify_cmd cmd,
2431 struct ieee80211_sta *sta)
2432 {
2433 __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2434 }
2435
2436 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2437 {
2438 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2439 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2440 struct ieee80211_sta *sta;
2441 struct iwl_mvm_sta *mvmsta;
2442 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2443
2444 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2445 return;
2446
2447 rcu_read_lock();
2448 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2449 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2450 rcu_read_unlock();
2451 return;
2452 }
2453
2454 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2455
2456 if (!mvmsta->vif ||
2457 mvmsta->vif->type != NL80211_IFTYPE_AP) {
2458 rcu_read_unlock();
2459 return;
2460 }
2461
2462 if (mvmsta->sleeping != sleeping) {
2463 mvmsta->sleeping = sleeping;
2464 __iwl_mvm_mac_sta_notify(mvm->hw,
2465 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2466 sta);
2467 ieee80211_sta_ps_transition(sta, sleeping);
2468 }
2469
2470 if (sleeping) {
2471 switch (notif->type) {
2472 case IWL_MVM_PM_EVENT_AWAKE:
2473 case IWL_MVM_PM_EVENT_ASLEEP:
2474 break;
2475 case IWL_MVM_PM_EVENT_UAPSD:
2476 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2477 break;
2478 case IWL_MVM_PM_EVENT_PS_POLL:
2479 ieee80211_sta_pspoll(sta);
2480 break;
2481 default:
2482 break;
2483 }
2484 }
2485
2486 rcu_read_unlock();
2487 }
2488
2489 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2490 struct ieee80211_vif *vif,
2491 struct ieee80211_sta *sta)
2492 {
2493 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2494 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2495
2496 /*
2497 * This is called before mac80211 does RCU synchronisation,
2498 * so here we already invalidate our internal RCU-protected
2499 * station pointer. The rest of the code will thus no longer
2500 * be able to find the station this way, and we don't rely
2501 * on further RCU synchronisation after the sta_state()
2502 * callback deleted the station.
2503 */
2504 mutex_lock(&mvm->mutex);
2505 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2506 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2507 ERR_PTR(-ENOENT));
2508
2509 mutex_unlock(&mvm->mutex);
2510 }
2511
2512 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2513 const u8 *bssid)
2514 {
2515 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2516 return;
2517
2518 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2519 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2520 return;
2521 }
2522
2523 if (!vif->p2p &&
2524 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2525 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2526 return;
2527 }
2528
2529 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2530 }
2531
2532 static void
2533 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2534 struct ieee80211_vif *vif, u8 *peer_addr,
2535 enum nl80211_tdls_operation action)
2536 {
2537 struct iwl_fw_dbg_trigger_tlv *trig;
2538 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2539
2540 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2541 return;
2542
2543 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2544 tdls_trig = (void *)trig->data;
2545 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
2546 ieee80211_vif_to_wdev(vif), trig))
2547 return;
2548
2549 if (!(tdls_trig->action_bitmap & BIT(action)))
2550 return;
2551
2552 if (tdls_trig->peer_mode &&
2553 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2554 return;
2555
2556 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2557 "TDLS event occurred, peer %pM, action %d",
2558 peer_addr, action);
2559 }
2560
2561 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2562 struct iwl_mvm_sta *mvm_sta)
2563 {
2564 struct iwl_mvm_tid_data *tid_data;
2565 struct sk_buff *skb;
2566 int i;
2567
2568 spin_lock_bh(&mvm_sta->lock);
2569 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2570 tid_data = &mvm_sta->tid_data[i];
2571
2572 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) {
2573 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2574
2575 /*
2576 * The first deferred frame should've stopped the MAC
2577 * queues, so we should never get a second deferred
2578 * frame for the RA/TID.
2579 */
2580 iwl_mvm_start_mac_queues(mvm, BIT(info->hw_queue));
2581 ieee80211_free_txskb(mvm->hw, skb);
2582 }
2583 }
2584 spin_unlock_bh(&mvm_sta->lock);
2585 }
2586
2587 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2588 struct ieee80211_vif *vif,
2589 struct ieee80211_sta *sta,
2590 enum ieee80211_sta_state old_state,
2591 enum ieee80211_sta_state new_state)
2592 {
2593 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2594 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2595 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2596 int ret;
2597
2598 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2599 sta->addr, old_state, new_state);
2600
2601 /* this would be a mac80211 bug ... but don't crash */
2602 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2603 return -EINVAL;
2604
2605 /*
2606 * If we are in a STA removal flow and in DQA mode:
2607 *
2608 * This is after the sync_rcu part, so the queues have already been
2609 * flushed. No more TXs on their way in mac80211's path, and no more in
2610 * the queues.
2611 * Also, we won't be getting any new TX frames for this station.
2612 * What we might have are deferred TX frames that need to be taken care
2613 * of.
2614 *
2615 * Drop any still-queued deferred-frame before removing the STA, and
2616 * make sure the worker is no longer handling frames for this STA.
2617 */
2618 if (old_state == IEEE80211_STA_NONE &&
2619 new_state == IEEE80211_STA_NOTEXIST) {
2620 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2621 flush_work(&mvm->add_stream_wk);
2622
2623 /*
2624 * No need to make sure deferred TX indication is off since the
2625 * worker will already remove it if it was on
2626 */
2627 }
2628
2629 mutex_lock(&mvm->mutex);
2630 /* track whether or not the station is associated */
2631 mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC;
2632
2633 if (old_state == IEEE80211_STA_NOTEXIST &&
2634 new_state == IEEE80211_STA_NONE) {
2635 /*
2636 * Firmware bug - it'll crash if the beacon interval is less
2637 * than 16. We can't avoid connecting at all, so refuse the
2638 * station state change, this will cause mac80211 to abandon
2639 * attempts to connect to this AP, and eventually wpa_s will
2640 * blacklist the AP...
2641 */
2642 if (vif->type == NL80211_IFTYPE_STATION &&
2643 vif->bss_conf.beacon_int < 16) {
2644 IWL_ERR(mvm,
2645 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2646 sta->addr, vif->bss_conf.beacon_int);
2647 ret = -EINVAL;
2648 goto out_unlock;
2649 }
2650
2651 if (sta->tdls &&
2652 (vif->p2p ||
2653 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2654 IWL_MVM_TDLS_STA_COUNT ||
2655 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2656 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2657 ret = -EBUSY;
2658 goto out_unlock;
2659 }
2660
2661 ret = iwl_mvm_add_sta(mvm, vif, sta);
2662 if (sta->tdls && ret == 0) {
2663 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2664 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2665 NL80211_TDLS_SETUP);
2666 }
2667 } else if (old_state == IEEE80211_STA_NONE &&
2668 new_state == IEEE80211_STA_AUTH) {
2669 /*
2670 * EBS may be disabled due to previous failures reported by FW.
2671 * Reset EBS status here assuming environment has been changed.
2672 */
2673 mvm->last_ebs_successful = true;
2674 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2675 ret = 0;
2676 } else if (old_state == IEEE80211_STA_AUTH &&
2677 new_state == IEEE80211_STA_ASSOC) {
2678 if (vif->type == NL80211_IFTYPE_AP) {
2679 mvmvif->ap_assoc_sta_count++;
2680 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2681 }
2682
2683 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2684 true);
2685 ret = iwl_mvm_update_sta(mvm, vif, sta);
2686 } else if (old_state == IEEE80211_STA_ASSOC &&
2687 new_state == IEEE80211_STA_AUTHORIZED) {
2688
2689 /* we don't support TDLS during DCM */
2690 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2691 iwl_mvm_teardown_tdls_peers(mvm);
2692
2693 if (sta->tdls)
2694 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2695 NL80211_TDLS_ENABLE_LINK);
2696
2697 /* enable beacon filtering */
2698 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2699 ret = 0;
2700 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2701 new_state == IEEE80211_STA_ASSOC) {
2702 /* disable beacon filtering */
2703 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2704 ret = 0;
2705 } else if (old_state == IEEE80211_STA_ASSOC &&
2706 new_state == IEEE80211_STA_AUTH) {
2707 if (vif->type == NL80211_IFTYPE_AP) {
2708 mvmvif->ap_assoc_sta_count--;
2709 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2710 }
2711 ret = 0;
2712 } else if (old_state == IEEE80211_STA_AUTH &&
2713 new_state == IEEE80211_STA_NONE) {
2714 ret = 0;
2715 } else if (old_state == IEEE80211_STA_NONE &&
2716 new_state == IEEE80211_STA_NOTEXIST) {
2717 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2718 if (sta->tdls) {
2719 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2720 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2721 NL80211_TDLS_DISABLE_LINK);
2722 }
2723 } else {
2724 ret = -EIO;
2725 }
2726 out_unlock:
2727 mutex_unlock(&mvm->mutex);
2728
2729 if (sta->tdls && ret == 0) {
2730 if (old_state == IEEE80211_STA_NOTEXIST &&
2731 new_state == IEEE80211_STA_NONE)
2732 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2733 else if (old_state == IEEE80211_STA_NONE &&
2734 new_state == IEEE80211_STA_NOTEXIST)
2735 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2736 }
2737
2738 return ret;
2739 }
2740
2741 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2742 {
2743 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2744
2745 mvm->rts_threshold = value;
2746
2747 return 0;
2748 }
2749
2750 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2751 struct ieee80211_vif *vif,
2752 struct ieee80211_sta *sta, u32 changed)
2753 {
2754 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2755
2756 if (vif->type == NL80211_IFTYPE_STATION &&
2757 changed & IEEE80211_RC_NSS_CHANGED)
2758 iwl_mvm_sf_update(mvm, vif, false);
2759 }
2760
2761 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2762 struct ieee80211_vif *vif, u16 ac,
2763 const struct ieee80211_tx_queue_params *params)
2764 {
2765 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2766 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2767
2768 mvmvif->queue_params[ac] = *params;
2769
2770 /*
2771 * No need to update right away, we'll get BSS_CHANGED_QOS
2772 * The exception is P2P_DEVICE interface which needs immediate update.
2773 */
2774 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2775 int ret;
2776
2777 mutex_lock(&mvm->mutex);
2778 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2779 mutex_unlock(&mvm->mutex);
2780 return ret;
2781 }
2782 return 0;
2783 }
2784
2785 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2786 struct ieee80211_vif *vif)
2787 {
2788 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2789 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2790 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2791
2792 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2793 return;
2794
2795 /*
2796 * iwl_mvm_protect_session() reads directly from the device
2797 * (the system time), so make sure it is available.
2798 */
2799 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2800 return;
2801
2802 mutex_lock(&mvm->mutex);
2803 /* Try really hard to protect the session and hear a beacon */
2804 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2805 mutex_unlock(&mvm->mutex);
2806
2807 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2808 }
2809
2810 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2811 struct ieee80211_vif *vif,
2812 struct cfg80211_sched_scan_request *req,
2813 struct ieee80211_scan_ies *ies)
2814 {
2815 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2816
2817 int ret;
2818
2819 mutex_lock(&mvm->mutex);
2820
2821 if (!vif->bss_conf.idle) {
2822 ret = -EBUSY;
2823 goto out;
2824 }
2825
2826 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2827
2828 out:
2829 mutex_unlock(&mvm->mutex);
2830 return ret;
2831 }
2832
2833 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2834 struct ieee80211_vif *vif)
2835 {
2836 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2837 int ret;
2838
2839 mutex_lock(&mvm->mutex);
2840
2841 /* Due to a race condition, it's possible that mac80211 asks
2842 * us to stop a sched_scan when it's already stopped. This
2843 * can happen, for instance, if we stopped the scan ourselves,
2844 * called ieee80211_sched_scan_stopped() and the userspace called
2845 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2846 * could run. To handle this, simply return if the scan is
2847 * not running.
2848 */
2849 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2850 mutex_unlock(&mvm->mutex);
2851 return 0;
2852 }
2853
2854 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2855 mutex_unlock(&mvm->mutex);
2856 iwl_mvm_wait_for_async_handlers(mvm);
2857
2858 return ret;
2859 }
2860
2861 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2862 enum set_key_cmd cmd,
2863 struct ieee80211_vif *vif,
2864 struct ieee80211_sta *sta,
2865 struct ieee80211_key_conf *key)
2866 {
2867 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2868 struct iwl_mvm_sta *mvmsta;
2869 struct iwl_mvm_key_pn *ptk_pn;
2870 int keyidx = key->keyidx;
2871 int ret;
2872 u8 key_offset;
2873
2874 if (iwlwifi_mod_params.swcrypto) {
2875 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2876 return -EOPNOTSUPP;
2877 }
2878
2879 switch (key->cipher) {
2880 case WLAN_CIPHER_SUITE_TKIP:
2881 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2882 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2883 break;
2884 case WLAN_CIPHER_SUITE_CCMP:
2885 case WLAN_CIPHER_SUITE_GCMP:
2886 case WLAN_CIPHER_SUITE_GCMP_256:
2887 if (!iwl_mvm_has_new_tx_api(mvm))
2888 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2889 break;
2890 case WLAN_CIPHER_SUITE_AES_CMAC:
2891 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2892 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2893 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2894 break;
2895 case WLAN_CIPHER_SUITE_WEP40:
2896 case WLAN_CIPHER_SUITE_WEP104:
2897 /* For non-client mode, only use WEP keys for TX as we probably
2898 * don't have a station yet anyway and would then have to keep
2899 * track of the keys, linking them to each of the clients/peers
2900 * as they appear. For now, don't do that, for performance WEP
2901 * offload doesn't really matter much, but we need it for some
2902 * other offload features in client mode.
2903 */
2904 if (vif->type != NL80211_IFTYPE_STATION)
2905 return 0;
2906 break;
2907 default:
2908 /* currently FW supports only one optional cipher scheme */
2909 if (hw->n_cipher_schemes &&
2910 hw->cipher_schemes->cipher == key->cipher)
2911 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2912 else
2913 return -EOPNOTSUPP;
2914 }
2915
2916 mutex_lock(&mvm->mutex);
2917
2918 switch (cmd) {
2919 case SET_KEY:
2920 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2921 vif->type == NL80211_IFTYPE_AP) && !sta) {
2922 /*
2923 * GTK on AP interface is a TX-only key, return 0;
2924 * on IBSS they're per-station and because we're lazy
2925 * we don't support them for RX, so do the same.
2926 * CMAC/GMAC in AP/IBSS modes must be done in software.
2927 */
2928 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2929 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2930 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2931 ret = -EOPNOTSUPP;
2932 else
2933 ret = 0;
2934
2935 if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
2936 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
2937 !iwl_mvm_has_new_tx_api(mvm)) {
2938 key->hw_key_idx = STA_KEY_IDX_INVALID;
2939 break;
2940 }
2941 }
2942
2943 /* During FW restart, in order to restore the state as it was,
2944 * don't try to reprogram keys we previously failed for.
2945 */
2946 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2947 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2948 IWL_DEBUG_MAC80211(mvm,
2949 "skip invalid idx key programming during restart\n");
2950 ret = 0;
2951 break;
2952 }
2953
2954 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2955 sta && iwl_mvm_has_new_rx_api(mvm) &&
2956 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2957 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2958 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2959 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2960 struct ieee80211_key_seq seq;
2961 int tid, q;
2962
2963 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2964 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2965 ptk_pn = kzalloc(sizeof(*ptk_pn) +
2966 mvm->trans->num_rx_queues *
2967 sizeof(ptk_pn->q[0]),
2968 GFP_KERNEL);
2969 if (!ptk_pn) {
2970 ret = -ENOMEM;
2971 break;
2972 }
2973
2974 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2975 ieee80211_get_key_rx_seq(key, tid, &seq);
2976 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2977 memcpy(ptk_pn->q[q].pn[tid],
2978 seq.ccmp.pn,
2979 IEEE80211_CCMP_PN_LEN);
2980 }
2981
2982 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2983 }
2984
2985 /* in HW restart reuse the index, otherwise request a new one */
2986 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2987 key_offset = key->hw_key_idx;
2988 else
2989 key_offset = STA_KEY_IDX_INVALID;
2990
2991 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2992 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2993 if (ret) {
2994 IWL_WARN(mvm, "set key failed\n");
2995 /*
2996 * can't add key for RX, but we don't need it
2997 * in the device for TX so still return 0
2998 */
2999 key->hw_key_idx = STA_KEY_IDX_INVALID;
3000 ret = 0;
3001 }
3002
3003 break;
3004 case DISABLE_KEY:
3005 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3006 ret = 0;
3007 break;
3008 }
3009
3010 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
3011 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3012 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3013 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3014 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3015 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3016 ptk_pn = rcu_dereference_protected(
3017 mvmsta->ptk_pn[keyidx],
3018 lockdep_is_held(&mvm->mutex));
3019 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3020 if (ptk_pn)
3021 kfree_rcu(ptk_pn, rcu_head);
3022 }
3023
3024 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3025 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3026 break;
3027 default:
3028 ret = -EINVAL;
3029 }
3030
3031 mutex_unlock(&mvm->mutex);
3032 return ret;
3033 }
3034
3035 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3036 struct ieee80211_vif *vif,
3037 struct ieee80211_key_conf *keyconf,
3038 struct ieee80211_sta *sta,
3039 u32 iv32, u16 *phase1key)
3040 {
3041 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3042
3043 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3044 return;
3045
3046 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3047 }
3048
3049
3050 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3051 struct iwl_rx_packet *pkt, void *data)
3052 {
3053 struct iwl_mvm *mvm =
3054 container_of(notif_wait, struct iwl_mvm, notif_wait);
3055 struct iwl_hs20_roc_res *resp;
3056 int resp_len = iwl_rx_packet_payload_len(pkt);
3057 struct iwl_mvm_time_event_data *te_data = data;
3058
3059 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3060 return true;
3061
3062 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3063 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3064 return true;
3065 }
3066
3067 resp = (void *)pkt->data;
3068
3069 IWL_DEBUG_TE(mvm,
3070 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3071 resp->status, resp->event_unique_id);
3072
3073 te_data->uid = le32_to_cpu(resp->event_unique_id);
3074 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3075 te_data->uid);
3076
3077 spin_lock_bh(&mvm->time_event_lock);
3078 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3079 spin_unlock_bh(&mvm->time_event_lock);
3080
3081 return true;
3082 }
3083
3084 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3085 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3086 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3087 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3088 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3089 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3090 struct ieee80211_channel *channel,
3091 struct ieee80211_vif *vif,
3092 int duration)
3093 {
3094 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3095 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3096 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3097 static const u16 time_event_response[] = { HOT_SPOT_CMD };
3098 struct iwl_notification_wait wait_time_event;
3099 u32 dtim_interval = vif->bss_conf.dtim_period *
3100 vif->bss_conf.beacon_int;
3101 u32 req_dur, delay;
3102 struct iwl_hs20_roc_req aux_roc_req = {
3103 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3104 .id_and_color =
3105 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3106 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3107 /* Set the channel info data */
3108 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3109 PHY_BAND_24 : PHY_BAND_5,
3110 .channel_info.channel = channel->hw_value,
3111 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3112 /* Set the time and duration */
3113 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3114 };
3115
3116 delay = AUX_ROC_MIN_DELAY;
3117 req_dur = MSEC_TO_TU(duration);
3118
3119 /*
3120 * If we are associated we want the delay time to be at least one
3121 * dtim interval so that the FW can wait until after the DTIM and
3122 * then start the time event, this will potentially allow us to
3123 * remain off-channel for the max duration.
3124 * Since we want to use almost a whole dtim interval we would also
3125 * like the delay to be for 2-3 dtim intervals, in case there are
3126 * other time events with higher priority.
3127 */
3128 if (vif->bss_conf.assoc) {
3129 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3130 /* We cannot remain off-channel longer than the DTIM interval */
3131 if (dtim_interval <= req_dur) {
3132 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3133 if (req_dur <= AUX_ROC_MIN_DURATION)
3134 req_dur = dtim_interval -
3135 AUX_ROC_MIN_SAFETY_BUFFER;
3136 }
3137 }
3138
3139 aux_roc_req.duration = cpu_to_le32(req_dur);
3140 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3141
3142 IWL_DEBUG_TE(mvm,
3143 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3144 channel->hw_value, req_dur, duration, delay,
3145 dtim_interval);
3146 /* Set the node address */
3147 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3148
3149 lockdep_assert_held(&mvm->mutex);
3150
3151 spin_lock_bh(&mvm->time_event_lock);
3152
3153 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3154 spin_unlock_bh(&mvm->time_event_lock);
3155 return -EIO;
3156 }
3157
3158 te_data->vif = vif;
3159 te_data->duration = duration;
3160 te_data->id = HOT_SPOT_CMD;
3161
3162 spin_unlock_bh(&mvm->time_event_lock);
3163
3164 /*
3165 * Use a notification wait, which really just processes the
3166 * command response and doesn't wait for anything, in order
3167 * to be able to process the response and get the UID inside
3168 * the RX path. Using CMD_WANT_SKB doesn't work because it
3169 * stores the buffer and then wakes up this thread, by which
3170 * time another notification (that the time event started)
3171 * might already be processed unsuccessfully.
3172 */
3173 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3174 time_event_response,
3175 ARRAY_SIZE(time_event_response),
3176 iwl_mvm_rx_aux_roc, te_data);
3177
3178 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3179 &aux_roc_req);
3180
3181 if (res) {
3182 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3183 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3184 goto out_clear_te;
3185 }
3186
3187 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3188 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3189 /* should never fail */
3190 WARN_ON_ONCE(res);
3191
3192 if (res) {
3193 out_clear_te:
3194 spin_lock_bh(&mvm->time_event_lock);
3195 iwl_mvm_te_clear_data(mvm, te_data);
3196 spin_unlock_bh(&mvm->time_event_lock);
3197 }
3198
3199 return res;
3200 }
3201
3202 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3203 struct ieee80211_vif *vif,
3204 struct ieee80211_channel *channel,
3205 int duration,
3206 enum ieee80211_roc_type type)
3207 {
3208 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3209 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3210 struct cfg80211_chan_def chandef;
3211 struct iwl_mvm_phy_ctxt *phy_ctxt;
3212 int ret, i;
3213
3214 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3215 duration, type);
3216
3217 flush_work(&mvm->roc_done_wk);
3218
3219 mutex_lock(&mvm->mutex);
3220
3221 switch (vif->type) {
3222 case NL80211_IFTYPE_STATION:
3223 if (fw_has_capa(&mvm->fw->ucode_capa,
3224 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3225 /* Use aux roc framework (HS20) */
3226 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3227 vif, duration);
3228 goto out_unlock;
3229 }
3230 IWL_ERR(mvm, "hotspot not supported\n");
3231 ret = -EINVAL;
3232 goto out_unlock;
3233 case NL80211_IFTYPE_P2P_DEVICE:
3234 /* handle below */
3235 break;
3236 default:
3237 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3238 ret = -EINVAL;
3239 goto out_unlock;
3240 }
3241
3242 for (i = 0; i < NUM_PHY_CTX; i++) {
3243 phy_ctxt = &mvm->phy_ctxts[i];
3244 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3245 continue;
3246
3247 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3248 /*
3249 * Unbind the P2P_DEVICE from the current PHY context,
3250 * and if the PHY context is not used remove it.
3251 */
3252 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3253 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3254 goto out_unlock;
3255
3256 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3257
3258 /* Bind the P2P_DEVICE to the current PHY Context */
3259 mvmvif->phy_ctxt = phy_ctxt;
3260
3261 ret = iwl_mvm_binding_add_vif(mvm, vif);
3262 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3263 goto out_unlock;
3264
3265 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3266 goto schedule_time_event;
3267 }
3268 }
3269
3270 /* Need to update the PHY context only if the ROC channel changed */
3271 if (channel == mvmvif->phy_ctxt->channel)
3272 goto schedule_time_event;
3273
3274 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3275
3276 /*
3277 * Change the PHY context configuration as it is currently referenced
3278 * only by the P2P Device MAC
3279 */
3280 if (mvmvif->phy_ctxt->ref == 1) {
3281 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3282 &chandef, 1, 1);
3283 if (ret)
3284 goto out_unlock;
3285 } else {
3286 /*
3287 * The PHY context is shared with other MACs. Need to remove the
3288 * P2P Device from the binding, allocate an new PHY context and
3289 * create a new binding
3290 */
3291 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3292 if (!phy_ctxt) {
3293 ret = -ENOSPC;
3294 goto out_unlock;
3295 }
3296
3297 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3298 1, 1);
3299 if (ret) {
3300 IWL_ERR(mvm, "Failed to change PHY context\n");
3301 goto out_unlock;
3302 }
3303
3304 /* Unbind the P2P_DEVICE from the current PHY context */
3305 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3306 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3307 goto out_unlock;
3308
3309 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3310
3311 /* Bind the P2P_DEVICE to the new allocated PHY context */
3312 mvmvif->phy_ctxt = phy_ctxt;
3313
3314 ret = iwl_mvm_binding_add_vif(mvm, vif);
3315 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3316 goto out_unlock;
3317
3318 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3319 }
3320
3321 schedule_time_event:
3322 /* Schedule the time events */
3323 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3324
3325 out_unlock:
3326 mutex_unlock(&mvm->mutex);
3327 IWL_DEBUG_MAC80211(mvm, "leave\n");
3328 return ret;
3329 }
3330
3331 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3332 {
3333 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3334
3335 IWL_DEBUG_MAC80211(mvm, "enter\n");
3336
3337 mutex_lock(&mvm->mutex);
3338 iwl_mvm_stop_roc(mvm);
3339 mutex_unlock(&mvm->mutex);
3340
3341 IWL_DEBUG_MAC80211(mvm, "leave\n");
3342 return 0;
3343 }
3344
3345 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3346 struct ieee80211_chanctx_conf *ctx)
3347 {
3348 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3349 struct iwl_mvm_phy_ctxt *phy_ctxt;
3350 int ret;
3351
3352 lockdep_assert_held(&mvm->mutex);
3353
3354 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3355
3356 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3357 if (!phy_ctxt) {
3358 ret = -ENOSPC;
3359 goto out;
3360 }
3361
3362 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3363 ctx->rx_chains_static,
3364 ctx->rx_chains_dynamic);
3365 if (ret) {
3366 IWL_ERR(mvm, "Failed to add PHY context\n");
3367 goto out;
3368 }
3369
3370 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3371 *phy_ctxt_id = phy_ctxt->id;
3372 out:
3373 return ret;
3374 }
3375
3376 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3377 struct ieee80211_chanctx_conf *ctx)
3378 {
3379 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3380 int ret;
3381
3382 mutex_lock(&mvm->mutex);
3383 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3384 mutex_unlock(&mvm->mutex);
3385
3386 return ret;
3387 }
3388
3389 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3390 struct ieee80211_chanctx_conf *ctx)
3391 {
3392 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3393 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3394
3395 lockdep_assert_held(&mvm->mutex);
3396
3397 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3398 }
3399
3400 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3401 struct ieee80211_chanctx_conf *ctx)
3402 {
3403 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3404
3405 mutex_lock(&mvm->mutex);
3406 __iwl_mvm_remove_chanctx(mvm, ctx);
3407 mutex_unlock(&mvm->mutex);
3408 }
3409
3410 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3411 struct ieee80211_chanctx_conf *ctx,
3412 u32 changed)
3413 {
3414 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3415 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3416 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3417
3418 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3419 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3420 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3421 IEEE80211_CHANCTX_CHANGE_RADAR |
3422 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3423 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3424 phy_ctxt->ref, changed))
3425 return;
3426
3427 mutex_lock(&mvm->mutex);
3428 iwl_mvm_bt_coex_vif_change(mvm);
3429 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3430 ctx->rx_chains_static,
3431 ctx->rx_chains_dynamic);
3432 mutex_unlock(&mvm->mutex);
3433 }
3434
3435 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3436 struct ieee80211_vif *vif,
3437 struct ieee80211_chanctx_conf *ctx,
3438 bool switching_chanctx)
3439 {
3440 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3441 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3442 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3443 int ret;
3444
3445 lockdep_assert_held(&mvm->mutex);
3446
3447 mvmvif->phy_ctxt = phy_ctxt;
3448
3449 switch (vif->type) {
3450 case NL80211_IFTYPE_AP:
3451 /* only needed if we're switching chanctx (i.e. during CSA) */
3452 if (switching_chanctx) {
3453 mvmvif->ap_ibss_active = true;
3454 break;
3455 }
3456 case NL80211_IFTYPE_ADHOC:
3457 /*
3458 * The AP binding flow is handled as part of the start_ap flow
3459 * (in bss_info_changed), similarly for IBSS.
3460 */
3461 ret = 0;
3462 goto out;
3463 case NL80211_IFTYPE_STATION:
3464 break;
3465 case NL80211_IFTYPE_MONITOR:
3466 /* always disable PS when a monitor interface is active */
3467 mvmvif->ps_disabled = true;
3468 break;
3469 default:
3470 ret = -EINVAL;
3471 goto out;
3472 }
3473
3474 ret = iwl_mvm_binding_add_vif(mvm, vif);
3475 if (ret)
3476 goto out;
3477
3478 /*
3479 * Power state must be updated before quotas,
3480 * otherwise fw will complain.
3481 */
3482 iwl_mvm_power_update_mac(mvm);
3483
3484 /* Setting the quota at this stage is only required for monitor
3485 * interfaces. For the other types, the bss_info changed flow
3486 * will handle quota settings.
3487 */
3488 if (vif->type == NL80211_IFTYPE_MONITOR) {
3489 mvmvif->monitor_active = true;
3490 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3491 if (ret)
3492 goto out_remove_binding;
3493
3494 ret = iwl_mvm_add_snif_sta(mvm, vif);
3495 if (ret)
3496 goto out_remove_binding;
3497
3498 }
3499
3500 /* Handle binding during CSA */
3501 if (vif->type == NL80211_IFTYPE_AP) {
3502 iwl_mvm_update_quotas(mvm, false, NULL);
3503 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3504 }
3505
3506 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3507 u32 duration = 2 * vif->bss_conf.beacon_int;
3508
3509 /* iwl_mvm_protect_session() reads directly from the
3510 * device (the system time), so make sure it is
3511 * available.
3512 */
3513 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3514 if (ret)
3515 goto out_remove_binding;
3516
3517 /* Protect the session to make sure we hear the first
3518 * beacon on the new channel.
3519 */
3520 iwl_mvm_protect_session(mvm, vif, duration, duration,
3521 vif->bss_conf.beacon_int / 2,
3522 true);
3523
3524 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3525
3526 iwl_mvm_update_quotas(mvm, false, NULL);
3527 }
3528
3529 goto out;
3530
3531 out_remove_binding:
3532 iwl_mvm_binding_remove_vif(mvm, vif);
3533 iwl_mvm_power_update_mac(mvm);
3534 out:
3535 if (ret)
3536 mvmvif->phy_ctxt = NULL;
3537 return ret;
3538 }
3539 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3540 struct ieee80211_vif *vif,
3541 struct ieee80211_chanctx_conf *ctx)
3542 {
3543 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3544 int ret;
3545
3546 mutex_lock(&mvm->mutex);
3547 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3548 mutex_unlock(&mvm->mutex);
3549
3550 return ret;
3551 }
3552
3553 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3554 struct ieee80211_vif *vif,
3555 struct ieee80211_chanctx_conf *ctx,
3556 bool switching_chanctx)
3557 {
3558 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3559 struct ieee80211_vif *disabled_vif = NULL;
3560
3561 lockdep_assert_held(&mvm->mutex);
3562
3563 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3564
3565 switch (vif->type) {
3566 case NL80211_IFTYPE_ADHOC:
3567 goto out;
3568 case NL80211_IFTYPE_MONITOR:
3569 mvmvif->monitor_active = false;
3570 mvmvif->ps_disabled = false;
3571 iwl_mvm_rm_snif_sta(mvm, vif);
3572 break;
3573 case NL80211_IFTYPE_AP:
3574 /* This part is triggered only during CSA */
3575 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3576 goto out;
3577
3578 mvmvif->csa_countdown = false;
3579
3580 /* Set CS bit on all the stations */
3581 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3582
3583 /* Save blocked iface, the timeout is set on the next beacon */
3584 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3585
3586 mvmvif->ap_ibss_active = false;
3587 break;
3588 case NL80211_IFTYPE_STATION:
3589 if (!switching_chanctx)
3590 break;
3591
3592 disabled_vif = vif;
3593
3594 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3595 break;
3596 default:
3597 break;
3598 }
3599
3600 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3601 iwl_mvm_binding_remove_vif(mvm, vif);
3602
3603 out:
3604 mvmvif->phy_ctxt = NULL;
3605 iwl_mvm_power_update_mac(mvm);
3606 }
3607
3608 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3609 struct ieee80211_vif *vif,
3610 struct ieee80211_chanctx_conf *ctx)
3611 {
3612 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3613
3614 mutex_lock(&mvm->mutex);
3615 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3616 mutex_unlock(&mvm->mutex);
3617 }
3618
3619 static int
3620 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3621 struct ieee80211_vif_chanctx_switch *vifs)
3622 {
3623 int ret;
3624
3625 mutex_lock(&mvm->mutex);
3626 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3627 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3628
3629 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3630 if (ret) {
3631 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3632 goto out_reassign;
3633 }
3634
3635 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3636 true);
3637 if (ret) {
3638 IWL_ERR(mvm,
3639 "failed to assign new_ctx during channel switch\n");
3640 goto out_remove;
3641 }
3642
3643 /* we don't support TDLS during DCM - can be caused by channel switch */
3644 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3645 iwl_mvm_teardown_tdls_peers(mvm);
3646
3647 goto out;
3648
3649 out_remove:
3650 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3651
3652 out_reassign:
3653 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3654 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3655 goto out_restart;
3656 }
3657
3658 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3659 true)) {
3660 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3661 goto out_restart;
3662 }
3663
3664 goto out;
3665
3666 out_restart:
3667 /* things keep failing, better restart the hw */
3668 iwl_mvm_nic_restart(mvm, false);
3669
3670 out:
3671 mutex_unlock(&mvm->mutex);
3672
3673 return ret;
3674 }
3675
3676 static int
3677 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3678 struct ieee80211_vif_chanctx_switch *vifs)
3679 {
3680 int ret;
3681
3682 mutex_lock(&mvm->mutex);
3683 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3684
3685 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3686 true);
3687 if (ret) {
3688 IWL_ERR(mvm,
3689 "failed to assign new_ctx during channel switch\n");
3690 goto out_reassign;
3691 }
3692
3693 goto out;
3694
3695 out_reassign:
3696 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3697 true)) {
3698 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3699 goto out_restart;
3700 }
3701
3702 goto out;
3703
3704 out_restart:
3705 /* things keep failing, better restart the hw */
3706 iwl_mvm_nic_restart(mvm, false);
3707
3708 out:
3709 mutex_unlock(&mvm->mutex);
3710
3711 return ret;
3712 }
3713
3714 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3715 struct ieee80211_vif_chanctx_switch *vifs,
3716 int n_vifs,
3717 enum ieee80211_chanctx_switch_mode mode)
3718 {
3719 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3720 int ret;
3721
3722 /* we only support a single-vif right now */
3723 if (n_vifs > 1)
3724 return -EOPNOTSUPP;
3725
3726 switch (mode) {
3727 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3728 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3729 break;
3730 case CHANCTX_SWMODE_REASSIGN_VIF:
3731 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3732 break;
3733 default:
3734 ret = -EOPNOTSUPP;
3735 break;
3736 }
3737
3738 return ret;
3739 }
3740
3741 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
3742 {
3743 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3744
3745 return mvm->ibss_manager;
3746 }
3747
3748 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3749 struct ieee80211_sta *sta,
3750 bool set)
3751 {
3752 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3753 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3754
3755 if (!mvm_sta || !mvm_sta->vif) {
3756 IWL_ERR(mvm, "Station is not associated to a vif\n");
3757 return -EINVAL;
3758 }
3759
3760 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3761 }
3762
3763 #ifdef CONFIG_NL80211_TESTMODE
3764 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3765 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3766 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3767 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3768 };
3769
3770 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3771 struct ieee80211_vif *vif,
3772 void *data, int len)
3773 {
3774 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3775 int err;
3776 u32 noa_duration;
3777
3778 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
3779 NULL);
3780 if (err)
3781 return err;
3782
3783 if (!tb[IWL_MVM_TM_ATTR_CMD])
3784 return -EINVAL;
3785
3786 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3787 case IWL_MVM_TM_CMD_SET_NOA:
3788 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3789 !vif->bss_conf.enable_beacon ||
3790 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3791 return -EINVAL;
3792
3793 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3794 if (noa_duration >= vif->bss_conf.beacon_int)
3795 return -EINVAL;
3796
3797 mvm->noa_duration = noa_duration;
3798 mvm->noa_vif = vif;
3799
3800 return iwl_mvm_update_quotas(mvm, false, NULL);
3801 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3802 /* must be associated client vif - ignore authorized */
3803 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3804 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3805 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3806 return -EINVAL;
3807
3808 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3809 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3810 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3811 }
3812
3813 return -EOPNOTSUPP;
3814 }
3815
3816 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3817 struct ieee80211_vif *vif,
3818 void *data, int len)
3819 {
3820 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3821 int err;
3822
3823 mutex_lock(&mvm->mutex);
3824 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3825 mutex_unlock(&mvm->mutex);
3826
3827 return err;
3828 }
3829 #endif
3830
3831 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3832 struct ieee80211_vif *vif,
3833 struct ieee80211_channel_switch *chsw)
3834 {
3835 /* By implementing this operation, we prevent mac80211 from
3836 * starting its own channel switch timer, so that we can call
3837 * ieee80211_chswitch_done() ourselves at the right time
3838 * (which is when the absence time event starts).
3839 */
3840
3841 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3842 "dummy channel switch op\n");
3843 }
3844
3845 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3846 struct ieee80211_vif *vif,
3847 struct ieee80211_channel_switch *chsw)
3848 {
3849 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3850 struct ieee80211_vif *csa_vif;
3851 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3852 u32 apply_time;
3853 int ret;
3854
3855 mutex_lock(&mvm->mutex);
3856
3857 mvmvif->csa_failed = false;
3858
3859 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3860 chsw->chandef.center_freq1);
3861
3862 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt,
3863 ieee80211_vif_to_wdev(vif),
3864 FW_DBG_TRIGGER_CHANNEL_SWITCH);
3865
3866 switch (vif->type) {
3867 case NL80211_IFTYPE_AP:
3868 csa_vif =
3869 rcu_dereference_protected(mvm->csa_vif,
3870 lockdep_is_held(&mvm->mutex));
3871 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3872 "Another CSA is already in progress")) {
3873 ret = -EBUSY;
3874 goto out_unlock;
3875 }
3876
3877 /* we still didn't unblock tx. prevent new CS meanwhile */
3878 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
3879 lockdep_is_held(&mvm->mutex))) {
3880 ret = -EBUSY;
3881 goto out_unlock;
3882 }
3883
3884 rcu_assign_pointer(mvm->csa_vif, vif);
3885
3886 if (WARN_ONCE(mvmvif->csa_countdown,
3887 "Previous CSA countdown didn't complete")) {
3888 ret = -EBUSY;
3889 goto out_unlock;
3890 }
3891
3892 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
3893
3894 break;
3895 case NL80211_IFTYPE_STATION:
3896 if (mvmvif->lqm_active)
3897 iwl_mvm_send_lqm_cmd(vif,
3898 LQM_CMD_OPERATION_STOP_MEASUREMENT,
3899 0, 0);
3900
3901 /* Schedule the time event to a bit before beacon 1,
3902 * to make sure we're in the new channel when the
3903 * GO/AP arrives. In case count <= 1 immediately schedule the
3904 * TE (this might result with some packet loss or connection
3905 * loss).
3906 */
3907 if (chsw->count <= 1)
3908 apply_time = 0;
3909 else
3910 apply_time = chsw->device_timestamp +
3911 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3912 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3913
3914 if (chsw->block_tx)
3915 iwl_mvm_csa_client_absent(mvm, vif);
3916
3917 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3918 apply_time);
3919 if (mvmvif->bf_data.bf_enabled) {
3920 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3921 if (ret)
3922 goto out_unlock;
3923 }
3924
3925 break;
3926 default:
3927 break;
3928 }
3929
3930 mvmvif->ps_disabled = true;
3931
3932 ret = iwl_mvm_power_update_ps(mvm);
3933 if (ret)
3934 goto out_unlock;
3935
3936 /* we won't be on this channel any longer */
3937 iwl_mvm_teardown_tdls_peers(mvm);
3938
3939 out_unlock:
3940 mutex_unlock(&mvm->mutex);
3941
3942 return ret;
3943 }
3944
3945 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3946 struct ieee80211_vif *vif)
3947 {
3948 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3949 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3950 int ret;
3951
3952 mutex_lock(&mvm->mutex);
3953
3954 if (mvmvif->csa_failed) {
3955 mvmvif->csa_failed = false;
3956 ret = -EIO;
3957 goto out_unlock;
3958 }
3959
3960 if (vif->type == NL80211_IFTYPE_STATION) {
3961 struct iwl_mvm_sta *mvmsta;
3962
3963 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3964 mvmvif->ap_sta_id);
3965
3966 if (WARN_ON(!mvmsta)) {
3967 ret = -EIO;
3968 goto out_unlock;
3969 }
3970
3971 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3972
3973 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3974
3975 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3976 if (ret)
3977 goto out_unlock;
3978
3979 iwl_mvm_stop_session_protection(mvm, vif);
3980 }
3981
3982 mvmvif->ps_disabled = false;
3983
3984 ret = iwl_mvm_power_update_ps(mvm);
3985
3986 out_unlock:
3987 mutex_unlock(&mvm->mutex);
3988
3989 return ret;
3990 }
3991
3992 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
3993 {
3994 if (drop) {
3995 if (iwl_mvm_has_new_tx_api(mvm))
3996 /* TODO new tx api */
3997 WARN_ONCE(1,
3998 "Need to implement flush TX queue\n");
3999 else
4000 iwl_mvm_flush_tx_path(mvm,
4001 iwl_mvm_flushable_queues(mvm) & queues,
4002 0);
4003 } else {
4004 if (iwl_mvm_has_new_tx_api(mvm)) {
4005 struct ieee80211_sta *sta;
4006 int i;
4007
4008 mutex_lock(&mvm->mutex);
4009
4010 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4011 sta = rcu_dereference_protected(
4012 mvm->fw_id_to_mac_id[i],
4013 lockdep_is_held(&mvm->mutex));
4014 if (IS_ERR_OR_NULL(sta))
4015 continue;
4016
4017 iwl_mvm_wait_sta_queues_empty(mvm,
4018 iwl_mvm_sta_from_mac80211(sta));
4019 }
4020
4021 mutex_unlock(&mvm->mutex);
4022 } else {
4023 iwl_trans_wait_tx_queues_empty(mvm->trans,
4024 queues);
4025 }
4026 }
4027 }
4028
4029 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
4030 struct ieee80211_vif *vif, u32 queues, bool drop)
4031 {
4032 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4033 struct iwl_mvm_vif *mvmvif;
4034 struct iwl_mvm_sta *mvmsta;
4035 struct ieee80211_sta *sta;
4036 int i;
4037 u32 msk = 0;
4038
4039 if (!vif) {
4040 iwl_mvm_flush_no_vif(mvm, queues, drop);
4041 return;
4042 }
4043
4044 if (vif->type != NL80211_IFTYPE_STATION)
4045 return;
4046
4047 /* Make sure we're done with the deferred traffic before flushing */
4048 flush_work(&mvm->add_stream_wk);
4049
4050 mutex_lock(&mvm->mutex);
4051 mvmvif = iwl_mvm_vif_from_mac80211(vif);
4052
4053 /* flush the AP-station and all TDLS peers */
4054 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4055 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4056 lockdep_is_held(&mvm->mutex));
4057 if (IS_ERR_OR_NULL(sta))
4058 continue;
4059
4060 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4061 if (mvmsta->vif != vif)
4062 continue;
4063
4064 /* make sure only TDLS peers or the AP are flushed */
4065 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4066
4067 if (drop) {
4068 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
4069 IWL_ERR(mvm, "flush request fail\n");
4070 } else {
4071 msk |= mvmsta->tfd_queue_msk;
4072 if (iwl_mvm_has_new_tx_api(mvm))
4073 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4074 }
4075 }
4076
4077 mutex_unlock(&mvm->mutex);
4078
4079 /* this can take a while, and we may need/want other operations
4080 * to succeed while doing this, so do it without the mutex held
4081 */
4082 if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4083 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4084 }
4085
4086 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4087 struct survey_info *survey)
4088 {
4089 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4090 int ret;
4091
4092 memset(survey, 0, sizeof(*survey));
4093
4094 /* only support global statistics right now */
4095 if (idx != 0)
4096 return -ENOENT;
4097
4098 if (!fw_has_capa(&mvm->fw->ucode_capa,
4099 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4100 return -ENOENT;
4101
4102 mutex_lock(&mvm->mutex);
4103
4104 if (iwl_mvm_firmware_running(mvm)) {
4105 ret = iwl_mvm_request_statistics(mvm, false);
4106 if (ret)
4107 goto out;
4108 }
4109
4110 survey->filled = SURVEY_INFO_TIME |
4111 SURVEY_INFO_TIME_RX |
4112 SURVEY_INFO_TIME_TX |
4113 SURVEY_INFO_TIME_SCAN;
4114 survey->time = mvm->accu_radio_stats.on_time_rf +
4115 mvm->radio_stats.on_time_rf;
4116 do_div(survey->time, USEC_PER_MSEC);
4117
4118 survey->time_rx = mvm->accu_radio_stats.rx_time +
4119 mvm->radio_stats.rx_time;
4120 do_div(survey->time_rx, USEC_PER_MSEC);
4121
4122 survey->time_tx = mvm->accu_radio_stats.tx_time +
4123 mvm->radio_stats.tx_time;
4124 do_div(survey->time_tx, USEC_PER_MSEC);
4125
4126 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4127 mvm->radio_stats.on_time_scan;
4128 do_div(survey->time_scan, USEC_PER_MSEC);
4129
4130 ret = 0;
4131 out:
4132 mutex_unlock(&mvm->mutex);
4133 return ret;
4134 }
4135
4136 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4137 struct ieee80211_vif *vif,
4138 struct ieee80211_sta *sta,
4139 struct station_info *sinfo)
4140 {
4141 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4142 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4143 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4144
4145 if (mvmsta->avg_energy) {
4146 sinfo->signal_avg = mvmsta->avg_energy;
4147 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
4148 }
4149
4150 if (!fw_has_capa(&mvm->fw->ucode_capa,
4151 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4152 return;
4153
4154 /* if beacon filtering isn't on mac80211 does it anyway */
4155 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4156 return;
4157
4158 if (!vif->bss_conf.assoc)
4159 return;
4160
4161 mutex_lock(&mvm->mutex);
4162
4163 if (mvmvif->ap_sta_id != mvmsta->sta_id)
4164 goto unlock;
4165
4166 if (iwl_mvm_request_statistics(mvm, false))
4167 goto unlock;
4168
4169 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4170 mvmvif->beacon_stats.accu_num_beacons;
4171 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
4172 if (mvmvif->beacon_stats.avg_signal) {
4173 /* firmware only reports a value after RXing a few beacons */
4174 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4175 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4176 }
4177 unlock:
4178 mutex_unlock(&mvm->mutex);
4179 }
4180
4181 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4182 struct ieee80211_vif *vif,
4183 const struct ieee80211_event *event)
4184 {
4185 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \
4186 do { \
4187 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \
4188 break; \
4189 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \
4190 } while (0)
4191
4192 struct iwl_fw_dbg_trigger_tlv *trig;
4193 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4194
4195 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4196 return;
4197
4198 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4199 trig_mlme = (void *)trig->data;
4200 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
4201 ieee80211_vif_to_wdev(vif), trig))
4202 return;
4203
4204 if (event->u.mlme.data == ASSOC_EVENT) {
4205 if (event->u.mlme.status == MLME_DENIED)
4206 CHECK_MLME_TRIGGER(stop_assoc_denied,
4207 "DENIED ASSOC: reason %d",
4208 event->u.mlme.reason);
4209 else if (event->u.mlme.status == MLME_TIMEOUT)
4210 CHECK_MLME_TRIGGER(stop_assoc_timeout,
4211 "ASSOC TIMEOUT");
4212 } else if (event->u.mlme.data == AUTH_EVENT) {
4213 if (event->u.mlme.status == MLME_DENIED)
4214 CHECK_MLME_TRIGGER(stop_auth_denied,
4215 "DENIED AUTH: reason %d",
4216 event->u.mlme.reason);
4217 else if (event->u.mlme.status == MLME_TIMEOUT)
4218 CHECK_MLME_TRIGGER(stop_auth_timeout,
4219 "AUTH TIMEOUT");
4220 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4221 CHECK_MLME_TRIGGER(stop_rx_deauth,
4222 "DEAUTH RX %d", event->u.mlme.reason);
4223 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4224 CHECK_MLME_TRIGGER(stop_tx_deauth,
4225 "DEAUTH TX %d", event->u.mlme.reason);
4226 }
4227 #undef CHECK_MLME_TRIGGER
4228 }
4229
4230 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4231 struct ieee80211_vif *vif,
4232 const struct ieee80211_event *event)
4233 {
4234 struct iwl_fw_dbg_trigger_tlv *trig;
4235 struct iwl_fw_dbg_trigger_ba *ba_trig;
4236
4237 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4238 return;
4239
4240 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4241 ba_trig = (void *)trig->data;
4242 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
4243 ieee80211_vif_to_wdev(vif), trig))
4244 return;
4245
4246 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4247 return;
4248
4249 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
4250 "BAR received from %pM, tid %d, ssn %d",
4251 event->u.ba.sta->addr, event->u.ba.tid,
4252 event->u.ba.ssn);
4253 }
4254
4255 static void
4256 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4257 struct ieee80211_vif *vif,
4258 const struct ieee80211_event *event)
4259 {
4260 struct iwl_fw_dbg_trigger_tlv *trig;
4261 struct iwl_fw_dbg_trigger_ba *ba_trig;
4262
4263 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4264 return;
4265
4266 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4267 ba_trig = (void *)trig->data;
4268 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
4269 ieee80211_vif_to_wdev(vif), trig))
4270 return;
4271
4272 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4273 return;
4274
4275 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
4276 "Frame from %pM timed out, tid %d",
4277 event->u.ba.sta->addr, event->u.ba.tid);
4278 }
4279
4280 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4281 struct ieee80211_vif *vif,
4282 const struct ieee80211_event *event)
4283 {
4284 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4285
4286 switch (event->type) {
4287 case MLME_EVENT:
4288 iwl_mvm_event_mlme_callback(mvm, vif, event);
4289 break;
4290 case BAR_RX_EVENT:
4291 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4292 break;
4293 case BA_FRAME_TIMEOUT:
4294 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4295 break;
4296 default:
4297 break;
4298 }
4299 }
4300
4301 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4302 struct iwl_mvm_internal_rxq_notif *notif,
4303 u32 size)
4304 {
4305 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4306 int ret;
4307
4308 lockdep_assert_held(&mvm->mutex);
4309
4310 /* TODO - remove a000 disablement when we have RXQ config API */
4311 if (!iwl_mvm_has_new_rx_api(mvm) ||
4312 mvm->trans->cfg->device_family == IWL_DEVICE_FAMILY_A000)
4313 return;
4314
4315 notif->cookie = mvm->queue_sync_cookie;
4316
4317 if (notif->sync)
4318 atomic_set(&mvm->queue_sync_counter,
4319 mvm->trans->num_rx_queues);
4320
4321 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4322 if (ret) {
4323 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4324 goto out;
4325 }
4326
4327 if (notif->sync) {
4328 ret = wait_event_timeout(mvm->rx_sync_waitq,
4329 atomic_read(&mvm->queue_sync_counter) == 0 ||
4330 iwl_mvm_is_radio_killed(mvm),
4331 HZ);
4332 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
4333 }
4334
4335 out:
4336 atomic_set(&mvm->queue_sync_counter, 0);
4337 mvm->queue_sync_cookie++;
4338 }
4339
4340 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4341 {
4342 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4343 struct iwl_mvm_internal_rxq_notif data = {
4344 .type = IWL_MVM_RXQ_EMPTY,
4345 .sync = 1,
4346 };
4347
4348 mutex_lock(&mvm->mutex);
4349 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4350 mutex_unlock(&mvm->mutex);
4351 }
4352
4353 const struct ieee80211_ops iwl_mvm_hw_ops = {
4354 .tx = iwl_mvm_mac_tx,
4355 .ampdu_action = iwl_mvm_mac_ampdu_action,
4356 .start = iwl_mvm_mac_start,
4357 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4358 .stop = iwl_mvm_mac_stop,
4359 .add_interface = iwl_mvm_mac_add_interface,
4360 .remove_interface = iwl_mvm_mac_remove_interface,
4361 .config = iwl_mvm_mac_config,
4362 .prepare_multicast = iwl_mvm_prepare_multicast,
4363 .configure_filter = iwl_mvm_configure_filter,
4364 .config_iface_filter = iwl_mvm_config_iface_filter,
4365 .bss_info_changed = iwl_mvm_bss_info_changed,
4366 .hw_scan = iwl_mvm_mac_hw_scan,
4367 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4368 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4369 .sta_state = iwl_mvm_mac_sta_state,
4370 .sta_notify = iwl_mvm_mac_sta_notify,
4371 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4372 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4373 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4374 .sta_rc_update = iwl_mvm_sta_rc_update,
4375 .conf_tx = iwl_mvm_mac_conf_tx,
4376 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4377 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4378 .flush = iwl_mvm_mac_flush,
4379 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4380 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4381 .set_key = iwl_mvm_mac_set_key,
4382 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4383 .remain_on_channel = iwl_mvm_roc,
4384 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4385 .add_chanctx = iwl_mvm_add_chanctx,
4386 .remove_chanctx = iwl_mvm_remove_chanctx,
4387 .change_chanctx = iwl_mvm_change_chanctx,
4388 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4389 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4390 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4391
4392 .start_ap = iwl_mvm_start_ap_ibss,
4393 .stop_ap = iwl_mvm_stop_ap_ibss,
4394 .join_ibss = iwl_mvm_start_ap_ibss,
4395 .leave_ibss = iwl_mvm_stop_ap_ibss,
4396
4397 .tx_last_beacon = iwl_mvm_tx_last_beacon,
4398
4399 .set_tim = iwl_mvm_set_tim,
4400
4401 .channel_switch = iwl_mvm_channel_switch,
4402 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4403 .post_channel_switch = iwl_mvm_post_channel_switch,
4404
4405 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4406 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4407 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4408
4409 .event_callback = iwl_mvm_mac_event_callback,
4410
4411 .sync_rx_queues = iwl_mvm_sync_rx_queues,
4412
4413 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4414
4415 #ifdef CONFIG_PM_SLEEP
4416 /* look at d3.c */
4417 .suspend = iwl_mvm_suspend,
4418 .resume = iwl_mvm_resume,
4419 .set_wakeup = iwl_mvm_set_wakeup,
4420 .set_rekey_data = iwl_mvm_set_rekey_data,
4421 #if IS_ENABLED(CONFIG_IPV6)
4422 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4423 #endif
4424 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4425 #endif
4426 .get_survey = iwl_mvm_mac_get_survey,
4427 .sta_statistics = iwl_mvm_mac_sta_statistics,
4428 };
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