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[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / intel / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * USA
25 *
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
28 *
29 * Contact Information:
30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32 *
33 * BSD LICENSE
34 *
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
37 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
38 * All rights reserved.
39 *
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
42 * are met:
43 *
44 * * Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * * Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in
48 * the documentation and/or other materials provided with the
49 * distribution.
50 * * Neither the name Intel Corporation nor the names of its
51 * contributors may be used to endorse or promote products derived
52 * from this software without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65 *
66 *****************************************************************************/
67 #include <linux/kernel.h>
68 #include <linux/slab.h>
69 #include <linux/skbuff.h>
70 #include <linux/netdevice.h>
71 #include <linux/etherdevice.h>
72 #include <linux/ip.h>
73 #include <linux/if_arp.h>
74 #include <linux/time.h>
75 #include <net/mac80211.h>
76 #include <net/ieee80211_radiotap.h>
77 #include <net/tcp.h>
78
79 #include "iwl-op-mode.h"
80 #include "iwl-io.h"
81 #include "mvm.h"
82 #include "sta.h"
83 #include "time-event.h"
84 #include "iwl-eeprom-parse.h"
85 #include "iwl-phy-db.h"
86 #include "testmode.h"
87 #include "fw/error-dump.h"
88 #include "iwl-prph.h"
89 #include "iwl-nvm-parse.h"
90 #include "fw-dbg.h"
91
92 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
93 {
94 .max = 1,
95 .types = BIT(NL80211_IFTYPE_STATION),
96 },
97 {
98 .max = 1,
99 .types = BIT(NL80211_IFTYPE_AP) |
100 BIT(NL80211_IFTYPE_P2P_CLIENT) |
101 BIT(NL80211_IFTYPE_P2P_GO),
102 },
103 {
104 .max = 1,
105 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
106 },
107 };
108
109 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
110 {
111 .num_different_channels = 2,
112 .max_interfaces = 3,
113 .limits = iwl_mvm_limits,
114 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
115 },
116 };
117
118 #ifdef CONFIG_PM_SLEEP
119 static const struct nl80211_wowlan_tcp_data_token_feature
120 iwl_mvm_wowlan_tcp_token_feature = {
121 .min_len = 0,
122 .max_len = 255,
123 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
124 };
125
126 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
127 .tok = &iwl_mvm_wowlan_tcp_token_feature,
128 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
129 sizeof(struct ethhdr) -
130 sizeof(struct iphdr) -
131 sizeof(struct tcphdr),
132 .data_interval_max = 65535, /* __le16 in API */
133 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
134 sizeof(struct ethhdr) -
135 sizeof(struct iphdr) -
136 sizeof(struct tcphdr),
137 .seq = true,
138 };
139 #endif
140
141 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
142 /*
143 * Use the reserved field to indicate magic values.
144 * these values will only be used internally by the driver,
145 * and won't make it to the fw (reserved will be 0).
146 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
147 * be the vif's ip address. in case there is not a single
148 * ip address (0, or more than 1), this attribute will
149 * be skipped.
150 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
151 * the LSB bytes of the vif's mac address
152 */
153 enum {
154 BC_FILTER_MAGIC_NONE = 0,
155 BC_FILTER_MAGIC_IP,
156 BC_FILTER_MAGIC_MAC,
157 };
158
159 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
160 {
161 /* arp */
162 .discard = 0,
163 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
164 .attrs = {
165 {
166 /* frame type - arp, hw type - ethernet */
167 .offset_type =
168 BCAST_FILTER_OFFSET_PAYLOAD_START,
169 .offset = sizeof(rfc1042_header),
170 .val = cpu_to_be32(0x08060001),
171 .mask = cpu_to_be32(0xffffffff),
172 },
173 {
174 /* arp dest ip */
175 .offset_type =
176 BCAST_FILTER_OFFSET_PAYLOAD_START,
177 .offset = sizeof(rfc1042_header) + 2 +
178 sizeof(struct arphdr) +
179 ETH_ALEN + sizeof(__be32) +
180 ETH_ALEN,
181 .mask = cpu_to_be32(0xffffffff),
182 /* mark it as special field */
183 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
184 },
185 },
186 },
187 {
188 /* dhcp offer bcast */
189 .discard = 0,
190 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
191 .attrs = {
192 {
193 /* udp dest port - 68 (bootp client)*/
194 .offset_type = BCAST_FILTER_OFFSET_IP_END,
195 .offset = offsetof(struct udphdr, dest),
196 .val = cpu_to_be32(0x00440000),
197 .mask = cpu_to_be32(0xffff0000),
198 },
199 {
200 /* dhcp - lsb bytes of client hw address */
201 .offset_type = BCAST_FILTER_OFFSET_IP_END,
202 .offset = 38,
203 .mask = cpu_to_be32(0xffffffff),
204 /* mark it as special field */
205 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
206 },
207 },
208 },
209 /* last filter must be empty */
210 {},
211 };
212 #endif
213
214 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
215 {
216 if (!iwl_mvm_is_d0i3_supported(mvm))
217 return;
218
219 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
220 spin_lock_bh(&mvm->refs_lock);
221 mvm->refs[ref_type]++;
222 spin_unlock_bh(&mvm->refs_lock);
223 iwl_trans_ref(mvm->trans);
224 }
225
226 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
227 {
228 if (!iwl_mvm_is_d0i3_supported(mvm))
229 return;
230
231 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
232 spin_lock_bh(&mvm->refs_lock);
233 if (WARN_ON(!mvm->refs[ref_type])) {
234 spin_unlock_bh(&mvm->refs_lock);
235 return;
236 }
237 mvm->refs[ref_type]--;
238 spin_unlock_bh(&mvm->refs_lock);
239 iwl_trans_unref(mvm->trans);
240 }
241
242 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
243 enum iwl_mvm_ref_type except_ref)
244 {
245 int i, j;
246
247 if (!iwl_mvm_is_d0i3_supported(mvm))
248 return;
249
250 spin_lock_bh(&mvm->refs_lock);
251 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
252 if (except_ref == i || !mvm->refs[i])
253 continue;
254
255 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
256 i, mvm->refs[i]);
257 for (j = 0; j < mvm->refs[i]; j++)
258 iwl_trans_unref(mvm->trans);
259 mvm->refs[i] = 0;
260 }
261 spin_unlock_bh(&mvm->refs_lock);
262 }
263
264 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
265 {
266 int i;
267 bool taken = false;
268
269 if (!iwl_mvm_is_d0i3_supported(mvm))
270 return true;
271
272 spin_lock_bh(&mvm->refs_lock);
273 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
274 if (mvm->refs[i]) {
275 taken = true;
276 break;
277 }
278 }
279 spin_unlock_bh(&mvm->refs_lock);
280
281 return taken;
282 }
283
284 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
285 {
286 iwl_mvm_ref(mvm, ref_type);
287
288 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
289 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
290 HZ)) {
291 WARN_ON_ONCE(1);
292 iwl_mvm_unref(mvm, ref_type);
293 return -EIO;
294 }
295
296 return 0;
297 }
298
299 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
300 {
301 int i;
302
303 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
304 for (i = 0; i < NUM_PHY_CTX; i++) {
305 mvm->phy_ctxts[i].id = i;
306 mvm->phy_ctxts[i].ref = 0;
307 }
308 }
309
310 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
311 const char *alpha2,
312 enum iwl_mcc_source src_id,
313 bool *changed)
314 {
315 struct ieee80211_regdomain *regd = NULL;
316 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
317 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
318 struct iwl_mcc_update_resp *resp;
319
320 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
321
322 lockdep_assert_held(&mvm->mutex);
323
324 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
325 if (IS_ERR_OR_NULL(resp)) {
326 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
327 PTR_ERR_OR_ZERO(resp));
328 goto out;
329 }
330
331 if (changed)
332 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
333
334 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
335 __le32_to_cpu(resp->n_channels),
336 resp->channels,
337 __le16_to_cpu(resp->mcc));
338 /* Store the return source id */
339 src_id = resp->source_id;
340 kfree(resp);
341 if (IS_ERR_OR_NULL(regd)) {
342 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
343 PTR_ERR_OR_ZERO(regd));
344 goto out;
345 }
346
347 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
348 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
349 mvm->lar_regdom_set = true;
350 mvm->mcc_src = src_id;
351
352 out:
353 return regd;
354 }
355
356 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
357 {
358 bool changed;
359 struct ieee80211_regdomain *regd;
360
361 if (!iwl_mvm_is_lar_supported(mvm))
362 return;
363
364 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
365 if (!IS_ERR_OR_NULL(regd)) {
366 /* only update the regulatory core if changed */
367 if (changed)
368 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
369
370 kfree(regd);
371 }
372 }
373
374 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
375 bool *changed)
376 {
377 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
378 iwl_mvm_is_wifi_mcc_supported(mvm) ?
379 MCC_SOURCE_GET_CURRENT :
380 MCC_SOURCE_OLD_FW, changed);
381 }
382
383 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
384 {
385 enum iwl_mcc_source used_src;
386 struct ieee80211_regdomain *regd;
387 int ret;
388 bool changed;
389 const struct ieee80211_regdomain *r =
390 rtnl_dereference(mvm->hw->wiphy->regd);
391
392 if (!r)
393 return -ENOENT;
394
395 /* save the last source in case we overwrite it below */
396 used_src = mvm->mcc_src;
397 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
398 /* Notify the firmware we support wifi location updates */
399 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
400 if (!IS_ERR_OR_NULL(regd))
401 kfree(regd);
402 }
403
404 /* Now set our last stored MCC and source */
405 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
406 &changed);
407 if (IS_ERR_OR_NULL(regd))
408 return -EIO;
409
410 /* update cfg80211 if the regdomain was changed */
411 if (changed)
412 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
413 else
414 ret = 0;
415
416 kfree(regd);
417 return ret;
418 }
419
420 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
421 {
422 struct ieee80211_hw *hw = mvm->hw;
423 int num_mac, ret, i;
424 static const u32 mvm_ciphers[] = {
425 WLAN_CIPHER_SUITE_WEP40,
426 WLAN_CIPHER_SUITE_WEP104,
427 WLAN_CIPHER_SUITE_TKIP,
428 WLAN_CIPHER_SUITE_CCMP,
429 };
430
431 /* Tell mac80211 our characteristics */
432 ieee80211_hw_set(hw, SIGNAL_DBM);
433 ieee80211_hw_set(hw, SPECTRUM_MGMT);
434 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
435 ieee80211_hw_set(hw, QUEUE_CONTROL);
436 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
437 ieee80211_hw_set(hw, SUPPORTS_PS);
438 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
439 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
440 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
441 ieee80211_hw_set(hw, CONNECTION_MONITOR);
442 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
443 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
444 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
445 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
446 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
447 if (iwl_mvm_has_new_rx_api(mvm))
448 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
449 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_STA_PM_NOTIF))
450 ieee80211_hw_set(hw, AP_LINK_PS);
451
452 if (mvm->trans->num_rx_queues > 1)
453 ieee80211_hw_set(hw, USES_RSS);
454
455 if (mvm->trans->max_skb_frags)
456 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
457
458 if (!iwl_mvm_is_dqa_supported(mvm))
459 hw->queues = mvm->first_agg_queue;
460 else
461 hw->queues = IEEE80211_MAX_QUEUES;
462 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
463 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
464 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
465 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
466 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
467
468 hw->radiotap_timestamp.units_pos =
469 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
470 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
471 /* this is the case for CCK frames, it's better (only 8) for OFDM */
472 hw->radiotap_timestamp.accuracy = 22;
473
474 hw->rate_control_algorithm = "iwl-mvm-rs";
475 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
476 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
477
478 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
479 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
480 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
481 hw->wiphy->cipher_suites = mvm->ciphers;
482
483 if (iwl_mvm_has_new_rx_api(mvm)) {
484 mvm->ciphers[hw->wiphy->n_cipher_suites] =
485 WLAN_CIPHER_SUITE_GCMP;
486 hw->wiphy->n_cipher_suites++;
487 mvm->ciphers[hw->wiphy->n_cipher_suites] =
488 WLAN_CIPHER_SUITE_GCMP_256;
489 hw->wiphy->n_cipher_suites++;
490 }
491
492 /* Enable 11w if software crypto is not enabled (as the
493 * firmware will interpret some mgmt packets, so enabling it
494 * with software crypto isn't safe).
495 */
496 if (!iwlwifi_mod_params.swcrypto) {
497 ieee80211_hw_set(hw, MFP_CAPABLE);
498 mvm->ciphers[hw->wiphy->n_cipher_suites] =
499 WLAN_CIPHER_SUITE_AES_CMAC;
500 hw->wiphy->n_cipher_suites++;
501 if (iwl_mvm_has_new_rx_api(mvm)) {
502 mvm->ciphers[hw->wiphy->n_cipher_suites] =
503 WLAN_CIPHER_SUITE_BIP_GMAC_128;
504 hw->wiphy->n_cipher_suites++;
505 mvm->ciphers[hw->wiphy->n_cipher_suites] =
506 WLAN_CIPHER_SUITE_BIP_GMAC_256;
507 hw->wiphy->n_cipher_suites++;
508 }
509 }
510
511 /* currently FW API supports only one optional cipher scheme */
512 if (mvm->fw->cs[0].cipher) {
513 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
514 struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
515
516 mvm->hw->n_cipher_schemes = 1;
517
518 cs->cipher = le32_to_cpu(fwcs->cipher);
519 cs->iftype = BIT(NL80211_IFTYPE_STATION);
520 cs->hdr_len = fwcs->hdr_len;
521 cs->pn_len = fwcs->pn_len;
522 cs->pn_off = fwcs->pn_off;
523 cs->key_idx_off = fwcs->key_idx_off;
524 cs->key_idx_mask = fwcs->key_idx_mask;
525 cs->key_idx_shift = fwcs->key_idx_shift;
526 cs->mic_len = fwcs->mic_len;
527
528 mvm->hw->cipher_schemes = mvm->cs;
529 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
530 hw->wiphy->n_cipher_suites++;
531 }
532
533 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
534 hw->wiphy->features |=
535 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
536 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
537 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
538
539 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
540 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
541 hw->chanctx_data_size = sizeof(u16);
542
543 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
544 BIT(NL80211_IFTYPE_P2P_CLIENT) |
545 BIT(NL80211_IFTYPE_AP) |
546 BIT(NL80211_IFTYPE_P2P_GO) |
547 BIT(NL80211_IFTYPE_P2P_DEVICE) |
548 BIT(NL80211_IFTYPE_ADHOC);
549
550 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
551 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
552 if (iwl_mvm_is_lar_supported(mvm))
553 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
554 else
555 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
556 REGULATORY_DISABLE_BEACON_HINTS;
557
558 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
559 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
560
561 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
562 hw->wiphy->n_iface_combinations =
563 ARRAY_SIZE(iwl_mvm_iface_combinations);
564
565 hw->wiphy->max_remain_on_channel_duration = 10000;
566 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
567 /* we can compensate an offset of up to 3 channels = 15 MHz */
568 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
569
570 /* Extract MAC address */
571 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
572 hw->wiphy->addresses = mvm->addresses;
573 hw->wiphy->n_addresses = 1;
574
575 /* Extract additional MAC addresses if available */
576 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
577 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
578
579 for (i = 1; i < num_mac; i++) {
580 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
581 ETH_ALEN);
582 mvm->addresses[i].addr[5]++;
583 hw->wiphy->n_addresses++;
584 }
585
586 iwl_mvm_reset_phy_ctxts(mvm);
587
588 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
589
590 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
591
592 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
593 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
594 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
595
596 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
597 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
598 else
599 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
600
601 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
602 hw->wiphy->bands[NL80211_BAND_2GHZ] =
603 &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
604 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
605 hw->wiphy->bands[NL80211_BAND_5GHZ] =
606 &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
607
608 if (fw_has_capa(&mvm->fw->ucode_capa,
609 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
610 fw_has_api(&mvm->fw->ucode_capa,
611 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
612 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
613 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
614 }
615
616 hw->wiphy->hw_version = mvm->trans->hw_id;
617
618 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
619 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
620 else
621 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
622
623 hw->wiphy->max_sched_scan_reqs = 1;
624 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
625 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
626 /* we create the 802.11 header and zero length SSID IE. */
627 hw->wiphy->max_sched_scan_ie_len =
628 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
629 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
630 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
631
632 /*
633 * the firmware uses u8 for num of iterations, but 0xff is saved for
634 * infinite loop, so the maximum number of iterations is actually 254.
635 */
636 hw->wiphy->max_sched_scan_plan_iterations = 254;
637
638 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
639 NL80211_FEATURE_LOW_PRIORITY_SCAN |
640 NL80211_FEATURE_P2P_GO_OPPPS |
641 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
642 NL80211_FEATURE_DYNAMIC_SMPS |
643 NL80211_FEATURE_STATIC_SMPS |
644 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
645
646 if (fw_has_capa(&mvm->fw->ucode_capa,
647 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
648 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
649 if (fw_has_capa(&mvm->fw->ucode_capa,
650 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
651 hw->wiphy->features |= NL80211_FEATURE_QUIET;
652
653 if (fw_has_capa(&mvm->fw->ucode_capa,
654 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
655 hw->wiphy->features |=
656 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
657
658 if (fw_has_capa(&mvm->fw->ucode_capa,
659 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
660 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
661
662 if (fw_has_api(&mvm->fw->ucode_capa,
663 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
664 wiphy_ext_feature_set(hw->wiphy,
665 NL80211_EXT_FEATURE_SCAN_START_TIME);
666 wiphy_ext_feature_set(hw->wiphy,
667 NL80211_EXT_FEATURE_BSS_PARENT_TSF);
668 wiphy_ext_feature_set(hw->wiphy,
669 NL80211_EXT_FEATURE_SET_SCAN_DWELL);
670 }
671
672 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
673
674 #ifdef CONFIG_PM_SLEEP
675 if (iwl_mvm_is_d0i3_supported(mvm) &&
676 device_can_wakeup(mvm->trans->dev)) {
677 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
678 hw->wiphy->wowlan = &mvm->wowlan;
679 }
680
681 if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec &&
682 mvm->trans->ops->d3_suspend &&
683 mvm->trans->ops->d3_resume &&
684 device_can_wakeup(mvm->trans->dev)) {
685 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
686 WIPHY_WOWLAN_DISCONNECT |
687 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
688 WIPHY_WOWLAN_RFKILL_RELEASE |
689 WIPHY_WOWLAN_NET_DETECT;
690 if (!iwlwifi_mod_params.swcrypto)
691 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
692 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
693 WIPHY_WOWLAN_4WAY_HANDSHAKE;
694
695 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
696 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
697 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
698 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
699 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
700 hw->wiphy->wowlan = &mvm->wowlan;
701 }
702 #endif
703
704 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
705 /* assign default bcast filtering configuration */
706 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
707 #endif
708
709 ret = iwl_mvm_leds_init(mvm);
710 if (ret)
711 return ret;
712
713 if (fw_has_capa(&mvm->fw->ucode_capa,
714 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
715 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
716 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
717 ieee80211_hw_set(hw, TDLS_WIDER_BW);
718 }
719
720 if (fw_has_capa(&mvm->fw->ucode_capa,
721 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
722 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
723 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
724 }
725
726 hw->netdev_features |= mvm->cfg->features;
727 if (!iwl_mvm_is_csum_supported(mvm)) {
728 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
729 NETIF_F_RXCSUM);
730 /* We may support SW TX CSUM */
731 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
732 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
733 }
734
735 ret = ieee80211_register_hw(mvm->hw);
736 if (ret)
737 iwl_mvm_leds_exit(mvm);
738 mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
739
740 if (mvm->cfg->vht_mu_mimo_supported)
741 wiphy_ext_feature_set(hw->wiphy,
742 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
743
744 return ret;
745 }
746
747 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
748 struct ieee80211_sta *sta,
749 struct sk_buff *skb)
750 {
751 struct iwl_mvm_sta *mvmsta;
752 bool defer = false;
753
754 /*
755 * double check the IN_D0I3 flag both before and after
756 * taking the spinlock, in order to prevent taking
757 * the spinlock when not needed.
758 */
759 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
760 return false;
761
762 spin_lock(&mvm->d0i3_tx_lock);
763 /*
764 * testing the flag again ensures the skb dequeue
765 * loop (on d0i3 exit) hasn't run yet.
766 */
767 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
768 goto out;
769
770 mvmsta = iwl_mvm_sta_from_mac80211(sta);
771 if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
772 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
773 goto out;
774
775 __skb_queue_tail(&mvm->d0i3_tx, skb);
776 ieee80211_stop_queues(mvm->hw);
777
778 /* trigger wakeup */
779 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
780 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
781
782 defer = true;
783 out:
784 spin_unlock(&mvm->d0i3_tx_lock);
785 return defer;
786 }
787
788 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
789 struct ieee80211_tx_control *control,
790 struct sk_buff *skb)
791 {
792 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
793 struct ieee80211_sta *sta = control->sta;
794 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
795 struct ieee80211_hdr *hdr = (void *)skb->data;
796
797 if (iwl_mvm_is_radio_killed(mvm)) {
798 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
799 goto drop;
800 }
801
802 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
803 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
804 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
805 goto drop;
806
807 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
808 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
809 ieee80211_is_mgmt(hdr->frame_control) &&
810 !ieee80211_is_deauth(hdr->frame_control) &&
811 !ieee80211_is_disassoc(hdr->frame_control) &&
812 !ieee80211_is_action(hdr->frame_control)))
813 sta = NULL;
814
815 if (sta) {
816 if (iwl_mvm_defer_tx(mvm, sta, skb))
817 return;
818 if (iwl_mvm_tx_skb(mvm, skb, sta))
819 goto drop;
820 return;
821 }
822
823 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
824 goto drop;
825 return;
826 drop:
827 ieee80211_free_txskb(hw, skb);
828 }
829
830 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
831 {
832 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
833 return false;
834 return true;
835 }
836
837 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
838 {
839 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
840 return false;
841 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
842 return true;
843
844 /* enabled by default */
845 return true;
846 }
847
848 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
849 do { \
850 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
851 break; \
852 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
853 } while (0)
854
855 static void
856 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
857 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
858 enum ieee80211_ampdu_mlme_action action)
859 {
860 struct iwl_fw_dbg_trigger_tlv *trig;
861 struct iwl_fw_dbg_trigger_ba *ba_trig;
862
863 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
864 return;
865
866 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
867 ba_trig = (void *)trig->data;
868
869 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
870 return;
871
872 switch (action) {
873 case IEEE80211_AMPDU_TX_OPERATIONAL: {
874 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
875 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
876
877 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
878 "TX AGG START: MAC %pM tid %d ssn %d\n",
879 sta->addr, tid, tid_data->ssn);
880 break;
881 }
882 case IEEE80211_AMPDU_TX_STOP_CONT:
883 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
884 "TX AGG STOP: MAC %pM tid %d\n",
885 sta->addr, tid);
886 break;
887 case IEEE80211_AMPDU_RX_START:
888 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
889 "RX AGG START: MAC %pM tid %d ssn %d\n",
890 sta->addr, tid, rx_ba_ssn);
891 break;
892 case IEEE80211_AMPDU_RX_STOP:
893 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
894 "RX AGG STOP: MAC %pM tid %d\n",
895 sta->addr, tid);
896 break;
897 default:
898 break;
899 }
900 }
901
902 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
903 struct ieee80211_vif *vif,
904 struct ieee80211_ampdu_params *params)
905 {
906 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
907 int ret;
908 bool tx_agg_ref = false;
909 struct ieee80211_sta *sta = params->sta;
910 enum ieee80211_ampdu_mlme_action action = params->action;
911 u16 tid = params->tid;
912 u16 *ssn = &params->ssn;
913 u8 buf_size = params->buf_size;
914 bool amsdu = params->amsdu;
915 u16 timeout = params->timeout;
916
917 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
918 sta->addr, tid, action);
919
920 if (!(mvm->nvm_data->sku_cap_11n_enable))
921 return -EACCES;
922
923 /* return from D0i3 before starting a new Tx aggregation */
924 switch (action) {
925 case IEEE80211_AMPDU_TX_START:
926 case IEEE80211_AMPDU_TX_STOP_CONT:
927 case IEEE80211_AMPDU_TX_STOP_FLUSH:
928 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
929 case IEEE80211_AMPDU_TX_OPERATIONAL:
930 /*
931 * for tx start, wait synchronously until D0i3 exit to
932 * get the correct sequence number for the tid.
933 * additionally, some other ampdu actions use direct
934 * target access, which is not handled automatically
935 * by the trans layer (unlike commands), so wait for
936 * d0i3 exit in these cases as well.
937 */
938 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
939 if (ret)
940 return ret;
941
942 tx_agg_ref = true;
943 break;
944 default:
945 break;
946 }
947
948 mutex_lock(&mvm->mutex);
949
950 switch (action) {
951 case IEEE80211_AMPDU_RX_START:
952 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
953 ret = -EINVAL;
954 break;
955 }
956 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
957 timeout);
958 break;
959 case IEEE80211_AMPDU_RX_STOP:
960 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
961 timeout);
962 break;
963 case IEEE80211_AMPDU_TX_START:
964 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
965 ret = -EINVAL;
966 break;
967 }
968 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
969 break;
970 case IEEE80211_AMPDU_TX_STOP_CONT:
971 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
972 break;
973 case IEEE80211_AMPDU_TX_STOP_FLUSH:
974 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
975 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
976 break;
977 case IEEE80211_AMPDU_TX_OPERATIONAL:
978 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
979 buf_size, amsdu);
980 break;
981 default:
982 WARN_ON_ONCE(1);
983 ret = -EINVAL;
984 break;
985 }
986
987 if (!ret) {
988 u16 rx_ba_ssn = 0;
989
990 if (action == IEEE80211_AMPDU_RX_START)
991 rx_ba_ssn = *ssn;
992
993 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
994 rx_ba_ssn, action);
995 }
996 mutex_unlock(&mvm->mutex);
997
998 /*
999 * If the tid is marked as started, we won't use it for offloaded
1000 * traffic on the next D0i3 entry. It's safe to unref.
1001 */
1002 if (tx_agg_ref)
1003 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
1004
1005 return ret;
1006 }
1007
1008 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1009 struct ieee80211_vif *vif)
1010 {
1011 struct iwl_mvm *mvm = data;
1012 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1013
1014 mvmvif->uploaded = false;
1015 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1016
1017 spin_lock_bh(&mvm->time_event_lock);
1018 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1019 spin_unlock_bh(&mvm->time_event_lock);
1020
1021 mvmvif->phy_ctxt = NULL;
1022 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1023 }
1024
1025 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1026 {
1027 /* clear the D3 reconfig, we only need it to avoid dumping a
1028 * firmware coredump on reconfiguration, we shouldn't do that
1029 * on D3->D0 transition
1030 */
1031 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1032 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1033 iwl_mvm_fw_error_dump(mvm);
1034 }
1035
1036 /* cleanup all stale references (scan, roc), but keep the
1037 * ucode_down ref until reconfig is complete
1038 */
1039 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1040
1041 iwl_mvm_stop_device(mvm);
1042
1043 mvm->scan_status = 0;
1044 mvm->ps_disabled = false;
1045 mvm->calibrating = false;
1046
1047 /* just in case one was running */
1048 iwl_mvm_cleanup_roc_te(mvm);
1049 ieee80211_remain_on_channel_expired(mvm->hw);
1050
1051 /*
1052 * cleanup all interfaces, even inactive ones, as some might have
1053 * gone down during the HW restart
1054 */
1055 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1056
1057 mvm->p2p_device_vif = NULL;
1058 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1059
1060 iwl_mvm_reset_phy_ctxts(mvm);
1061 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1062 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1063 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1064 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1065 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1066 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1067
1068 ieee80211_wake_queues(mvm->hw);
1069
1070 /* clear any stale d0i3 state */
1071 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1072
1073 mvm->vif_count = 0;
1074 mvm->rx_ba_sessions = 0;
1075 mvm->fw_dbg_conf = FW_DBG_INVALID;
1076
1077 /* keep statistics ticking */
1078 iwl_mvm_accu_radio_stats(mvm);
1079 }
1080
1081 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1082 {
1083 int ret;
1084
1085 lockdep_assert_held(&mvm->mutex);
1086
1087 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1088 /* Clean up some internal and mac80211 state on restart */
1089 iwl_mvm_restart_cleanup(mvm);
1090 } else {
1091 /* Hold the reference to prevent runtime suspend while
1092 * the start procedure runs. It's a bit confusing
1093 * that the UCODE_DOWN reference is taken, but it just
1094 * means "UCODE is not UP yet". ( TODO: rename this
1095 * reference).
1096 */
1097 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1098 }
1099 ret = iwl_mvm_up(mvm);
1100
1101 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1102 /* Something went wrong - we need to finish some cleanup
1103 * that normally iwl_mvm_mac_restart_complete() below
1104 * would do.
1105 */
1106 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1107 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1108 }
1109
1110 return ret;
1111 }
1112
1113 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1114 {
1115 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1116 int ret;
1117
1118 /* Some hw restart cleanups must not hold the mutex */
1119 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1120 /*
1121 * Make sure we are out of d0i3. This is needed
1122 * to make sure the reference accounting is correct
1123 * (and there is no stale d0i3_exit_work).
1124 */
1125 wait_event_timeout(mvm->d0i3_exit_waitq,
1126 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1127 &mvm->status),
1128 HZ);
1129 }
1130
1131 mutex_lock(&mvm->mutex);
1132 ret = __iwl_mvm_mac_start(mvm);
1133 mutex_unlock(&mvm->mutex);
1134
1135 return ret;
1136 }
1137
1138 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1139 {
1140 int ret;
1141
1142 mutex_lock(&mvm->mutex);
1143
1144 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1145 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1146 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1147 if (ret)
1148 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1149 ret);
1150
1151 /* allow transport/FW low power modes */
1152 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1153
1154 /*
1155 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1156 * of packets the FW sent out, so we must reconnect.
1157 */
1158 iwl_mvm_teardown_tdls_peers(mvm);
1159
1160 mutex_unlock(&mvm->mutex);
1161 }
1162
1163 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1164 {
1165 if (iwl_mvm_is_d0i3_supported(mvm) &&
1166 iwl_mvm_enter_d0i3_on_suspend(mvm))
1167 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1168 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1169 &mvm->status),
1170 HZ),
1171 "D0i3 exit on resume timed out\n");
1172 }
1173
1174 static void
1175 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1176 enum ieee80211_reconfig_type reconfig_type)
1177 {
1178 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1179
1180 switch (reconfig_type) {
1181 case IEEE80211_RECONFIG_TYPE_RESTART:
1182 iwl_mvm_restart_complete(mvm);
1183 break;
1184 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1185 iwl_mvm_resume_complete(mvm);
1186 break;
1187 }
1188 }
1189
1190 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1191 {
1192 lockdep_assert_held(&mvm->mutex);
1193
1194 /* firmware counters are obviously reset now, but we shouldn't
1195 * partially track so also clear the fw_reset_accu counters.
1196 */
1197 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1198
1199 /* async_handlers_wk is now blocked */
1200
1201 /*
1202 * The work item could be running or queued if the
1203 * ROC time event stops just as we get here.
1204 */
1205 flush_work(&mvm->roc_done_wk);
1206
1207 iwl_mvm_stop_device(mvm);
1208
1209 iwl_mvm_async_handlers_purge(mvm);
1210 /* async_handlers_list is empty and will stay empty: HW is stopped */
1211
1212 /* the fw is stopped, the aux sta is dead: clean up driver state */
1213 iwl_mvm_del_aux_sta(mvm);
1214
1215 /*
1216 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1217 * won't be called in this case).
1218 * But make sure to cleanup interfaces that have gone down before/during
1219 * HW restart was requested.
1220 */
1221 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1222 ieee80211_iterate_interfaces(mvm->hw, 0,
1223 iwl_mvm_cleanup_iterator, mvm);
1224
1225 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1226 * make sure there's nothing left there and warn if any is found.
1227 */
1228 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1229 int i;
1230
1231 for (i = 0; i < mvm->max_scans; i++) {
1232 if (WARN_ONCE(mvm->scan_uid_status[i],
1233 "UMAC scan UID %d status was not cleaned\n",
1234 i))
1235 mvm->scan_uid_status[i] = 0;
1236 }
1237 }
1238 }
1239
1240 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1241 {
1242 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1243
1244 flush_work(&mvm->d0i3_exit_work);
1245 flush_work(&mvm->async_handlers_wk);
1246 flush_work(&mvm->add_stream_wk);
1247
1248 /*
1249 * Lock and clear the firmware running bit here already, so that
1250 * new commands coming in elsewhere, e.g. from debugfs, will not
1251 * be able to proceed. This is important here because one of those
1252 * debugfs files causes the fw_dump_wk to be triggered, and if we
1253 * don't stop debugfs accesses before canceling that it could be
1254 * retriggered after we flush it but before we've cleared the bit.
1255 */
1256 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1257
1258 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1259 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1260 cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1261 iwl_mvm_free_fw_dump_desc(mvm);
1262
1263 mutex_lock(&mvm->mutex);
1264 __iwl_mvm_mac_stop(mvm);
1265 mutex_unlock(&mvm->mutex);
1266
1267 /*
1268 * The worker might have been waiting for the mutex, let it run and
1269 * discover that its list is now empty.
1270 */
1271 cancel_work_sync(&mvm->async_handlers_wk);
1272 }
1273
1274 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1275 {
1276 u16 i;
1277
1278 lockdep_assert_held(&mvm->mutex);
1279
1280 for (i = 0; i < NUM_PHY_CTX; i++)
1281 if (!mvm->phy_ctxts[i].ref)
1282 return &mvm->phy_ctxts[i];
1283
1284 IWL_ERR(mvm, "No available PHY context\n");
1285 return NULL;
1286 }
1287
1288 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1289 s16 tx_power)
1290 {
1291 struct iwl_dev_tx_power_cmd cmd = {
1292 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1293 .v3.mac_context_id =
1294 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1295 .v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1296 };
1297 int len = sizeof(cmd);
1298
1299 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1300 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1301
1302 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1303 len = sizeof(cmd.v3);
1304
1305 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1306 }
1307
1308 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1309 struct ieee80211_vif *vif)
1310 {
1311 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1312 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1313 int ret;
1314
1315 mvmvif->mvm = mvm;
1316
1317 /*
1318 * make sure D0i3 exit is completed, otherwise a target access
1319 * during tx queue configuration could be done when still in
1320 * D0i3 state.
1321 */
1322 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1323 if (ret)
1324 return ret;
1325
1326 /*
1327 * Not much to do here. The stack will not allow interface
1328 * types or combinations that we didn't advertise, so we
1329 * don't really have to check the types.
1330 */
1331
1332 mutex_lock(&mvm->mutex);
1333
1334 /* make sure that beacon statistics don't go backwards with FW reset */
1335 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1336 mvmvif->beacon_stats.accu_num_beacons +=
1337 mvmvif->beacon_stats.num_beacons;
1338
1339 /* Allocate resources for the MAC context, and add it to the fw */
1340 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1341 if (ret)
1342 goto out_unlock;
1343
1344 /* Counting number of interfaces is needed for legacy PM */
1345 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1346 mvm->vif_count++;
1347
1348 /*
1349 * The AP binding flow can be done only after the beacon
1350 * template is configured (which happens only in the mac80211
1351 * start_ap() flow), and adding the broadcast station can happen
1352 * only after the binding.
1353 * In addition, since modifying the MAC before adding a bcast
1354 * station is not allowed by the FW, delay the adding of MAC context to
1355 * the point where we can also add the bcast station.
1356 * In short: there's not much we can do at this point, other than
1357 * allocating resources :)
1358 */
1359 if (vif->type == NL80211_IFTYPE_AP ||
1360 vif->type == NL80211_IFTYPE_ADHOC) {
1361 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1362 if (ret) {
1363 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1364 goto out_release;
1365 }
1366
1367 if (iwl_mvm_is_dqa_supported(mvm)) {
1368 /*
1369 * Only queue for this station is the mcast queue,
1370 * which shouldn't be in TFD mask anyway
1371 */
1372 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1373 0, vif->type,
1374 IWL_STA_MULTICAST);
1375 if (ret)
1376 goto out_release;
1377 }
1378
1379 iwl_mvm_vif_dbgfs_register(mvm, vif);
1380 goto out_unlock;
1381 }
1382
1383 mvmvif->features |= hw->netdev_features;
1384
1385 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1386 if (ret)
1387 goto out_release;
1388
1389 ret = iwl_mvm_power_update_mac(mvm);
1390 if (ret)
1391 goto out_remove_mac;
1392
1393 /* beacon filtering */
1394 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1395 if (ret)
1396 goto out_remove_mac;
1397
1398 if (!mvm->bf_allowed_vif &&
1399 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1400 mvm->bf_allowed_vif = mvmvif;
1401 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1402 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1403 }
1404
1405 /*
1406 * P2P_DEVICE interface does not have a channel context assigned to it,
1407 * so a dedicated PHY context is allocated to it and the corresponding
1408 * MAC context is bound to it at this stage.
1409 */
1410 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1411
1412 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1413 if (!mvmvif->phy_ctxt) {
1414 ret = -ENOSPC;
1415 goto out_free_bf;
1416 }
1417
1418 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1419 ret = iwl_mvm_binding_add_vif(mvm, vif);
1420 if (ret)
1421 goto out_unref_phy;
1422
1423 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1424 if (ret)
1425 goto out_unbind;
1426
1427 /* Save a pointer to p2p device vif, so it can later be used to
1428 * update the p2p device MAC when a GO is started/stopped */
1429 mvm->p2p_device_vif = vif;
1430 }
1431
1432 iwl_mvm_vif_dbgfs_register(mvm, vif);
1433 goto out_unlock;
1434
1435 out_unbind:
1436 iwl_mvm_binding_remove_vif(mvm, vif);
1437 out_unref_phy:
1438 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1439 out_free_bf:
1440 if (mvm->bf_allowed_vif == mvmvif) {
1441 mvm->bf_allowed_vif = NULL;
1442 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1443 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1444 }
1445 out_remove_mac:
1446 mvmvif->phy_ctxt = NULL;
1447 iwl_mvm_mac_ctxt_remove(mvm, vif);
1448 out_release:
1449 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1450 mvm->vif_count--;
1451
1452 iwl_mvm_mac_ctxt_release(mvm, vif);
1453 out_unlock:
1454 mutex_unlock(&mvm->mutex);
1455
1456 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1457
1458 return ret;
1459 }
1460
1461 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1462 struct ieee80211_vif *vif)
1463 {
1464 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1465
1466 if (tfd_msk && !iwl_mvm_is_dqa_supported(mvm)) {
1467 /*
1468 * mac80211 first removes all the stations of the vif and
1469 * then removes the vif. When it removes a station it also
1470 * flushes the AMPDU session. So by now, all the AMPDU sessions
1471 * of all the stations of this vif are closed, and the queues
1472 * of these AMPDU sessions are properly closed.
1473 * We still need to take care of the shared queues of the vif.
1474 * Flush them here.
1475 * For DQA mode there is no need - broacast and multicast queue
1476 * are flushed separately.
1477 */
1478 mutex_lock(&mvm->mutex);
1479 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1480 mutex_unlock(&mvm->mutex);
1481
1482 /*
1483 * There are transports that buffer a few frames in the host.
1484 * For these, the flush above isn't enough since while we were
1485 * flushing, the transport might have sent more frames to the
1486 * device. To solve this, wait here until the transport is
1487 * empty. Technically, this could have replaced the flush
1488 * above, but flush is much faster than draining. So flush
1489 * first, and drain to make sure we have no frames in the
1490 * transport anymore.
1491 * If a station still had frames on the shared queues, it is
1492 * already marked as draining, so to complete the draining, we
1493 * just need to wait until the transport is empty.
1494 */
1495 iwl_trans_wait_tx_queues_empty(mvm->trans, tfd_msk);
1496 }
1497
1498 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1499 /*
1500 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1501 * We assume here that all the packets sent to the OFFCHANNEL
1502 * queue are sent in ROC session.
1503 */
1504 flush_work(&mvm->roc_done_wk);
1505 } else {
1506 /*
1507 * By now, all the AC queues are empty. The AGG queues are
1508 * empty too. We already got all the Tx responses for all the
1509 * packets in the queues. The drain work can have been
1510 * triggered. Flush it.
1511 */
1512 flush_work(&mvm->sta_drained_wk);
1513 }
1514 }
1515
1516 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1517 struct ieee80211_vif *vif)
1518 {
1519 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1520 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1521
1522 iwl_mvm_prepare_mac_removal(mvm, vif);
1523
1524 mutex_lock(&mvm->mutex);
1525
1526 if (mvm->bf_allowed_vif == mvmvif) {
1527 mvm->bf_allowed_vif = NULL;
1528 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1529 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1530 }
1531
1532 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1533
1534 /*
1535 * For AP/GO interface, the tear down of the resources allocated to the
1536 * interface is be handled as part of the stop_ap flow.
1537 */
1538 if (vif->type == NL80211_IFTYPE_AP ||
1539 vif->type == NL80211_IFTYPE_ADHOC) {
1540 #ifdef CONFIG_NL80211_TESTMODE
1541 if (vif == mvm->noa_vif) {
1542 mvm->noa_vif = NULL;
1543 mvm->noa_duration = 0;
1544 }
1545 #endif
1546 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1547 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1548 goto out_release;
1549 }
1550
1551 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1552 mvm->p2p_device_vif = NULL;
1553 iwl_mvm_rm_bcast_sta(mvm, vif);
1554 iwl_mvm_binding_remove_vif(mvm, vif);
1555 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1556 mvmvif->phy_ctxt = NULL;
1557 }
1558
1559 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1560 mvm->vif_count--;
1561
1562 iwl_mvm_power_update_mac(mvm);
1563 iwl_mvm_mac_ctxt_remove(mvm, vif);
1564
1565 out_release:
1566 iwl_mvm_mac_ctxt_release(mvm, vif);
1567 mutex_unlock(&mvm->mutex);
1568 }
1569
1570 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1571 {
1572 return 0;
1573 }
1574
1575 struct iwl_mvm_mc_iter_data {
1576 struct iwl_mvm *mvm;
1577 int port_id;
1578 };
1579
1580 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1581 struct ieee80211_vif *vif)
1582 {
1583 struct iwl_mvm_mc_iter_data *data = _data;
1584 struct iwl_mvm *mvm = data->mvm;
1585 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1586 int ret, len;
1587
1588 /* if we don't have free ports, mcast frames will be dropped */
1589 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1590 return;
1591
1592 if (vif->type != NL80211_IFTYPE_STATION ||
1593 !vif->bss_conf.assoc)
1594 return;
1595
1596 cmd->port_id = data->port_id++;
1597 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1598 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1599
1600 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1601 if (ret)
1602 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1603 }
1604
1605 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1606 {
1607 struct iwl_mvm_mc_iter_data iter_data = {
1608 .mvm = mvm,
1609 };
1610
1611 lockdep_assert_held(&mvm->mutex);
1612
1613 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1614 return;
1615
1616 ieee80211_iterate_active_interfaces_atomic(
1617 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1618 iwl_mvm_mc_iface_iterator, &iter_data);
1619 }
1620
1621 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1622 struct netdev_hw_addr_list *mc_list)
1623 {
1624 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1625 struct iwl_mcast_filter_cmd *cmd;
1626 struct netdev_hw_addr *addr;
1627 int addr_count;
1628 bool pass_all;
1629 int len;
1630
1631 addr_count = netdev_hw_addr_list_count(mc_list);
1632 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1633 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1634 if (pass_all)
1635 addr_count = 0;
1636
1637 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1638 cmd = kzalloc(len, GFP_ATOMIC);
1639 if (!cmd)
1640 return 0;
1641
1642 if (pass_all) {
1643 cmd->pass_all = 1;
1644 return (u64)(unsigned long)cmd;
1645 }
1646
1647 netdev_hw_addr_list_for_each(addr, mc_list) {
1648 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1649 cmd->count, addr->addr);
1650 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1651 addr->addr, ETH_ALEN);
1652 cmd->count++;
1653 }
1654
1655 return (u64)(unsigned long)cmd;
1656 }
1657
1658 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1659 unsigned int changed_flags,
1660 unsigned int *total_flags,
1661 u64 multicast)
1662 {
1663 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1664 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1665
1666 mutex_lock(&mvm->mutex);
1667
1668 /* replace previous configuration */
1669 kfree(mvm->mcast_filter_cmd);
1670 mvm->mcast_filter_cmd = cmd;
1671
1672 if (!cmd)
1673 goto out;
1674
1675 iwl_mvm_recalc_multicast(mvm);
1676 out:
1677 mutex_unlock(&mvm->mutex);
1678 *total_flags = 0;
1679 }
1680
1681 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1682 struct ieee80211_vif *vif,
1683 unsigned int filter_flags,
1684 unsigned int changed_flags)
1685 {
1686 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1687
1688 /* We support only filter for probe requests */
1689 if (!(changed_flags & FIF_PROBE_REQ))
1690 return;
1691
1692 /* Supported only for p2p client interfaces */
1693 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1694 !vif->p2p)
1695 return;
1696
1697 mutex_lock(&mvm->mutex);
1698 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1699 mutex_unlock(&mvm->mutex);
1700 }
1701
1702 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1703 struct iwl_bcast_iter_data {
1704 struct iwl_mvm *mvm;
1705 struct iwl_bcast_filter_cmd *cmd;
1706 u8 current_filter;
1707 };
1708
1709 static void
1710 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1711 const struct iwl_fw_bcast_filter *in_filter,
1712 struct iwl_fw_bcast_filter *out_filter)
1713 {
1714 struct iwl_fw_bcast_filter_attr *attr;
1715 int i;
1716
1717 memcpy(out_filter, in_filter, sizeof(*out_filter));
1718
1719 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1720 attr = &out_filter->attrs[i];
1721
1722 if (!attr->mask)
1723 break;
1724
1725 switch (attr->reserved1) {
1726 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1727 if (vif->bss_conf.arp_addr_cnt != 1) {
1728 attr->mask = 0;
1729 continue;
1730 }
1731
1732 attr->val = vif->bss_conf.arp_addr_list[0];
1733 break;
1734 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1735 attr->val = *(__be32 *)&vif->addr[2];
1736 break;
1737 default:
1738 break;
1739 }
1740 attr->reserved1 = 0;
1741 out_filter->num_attrs++;
1742 }
1743 }
1744
1745 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1746 struct ieee80211_vif *vif)
1747 {
1748 struct iwl_bcast_iter_data *data = _data;
1749 struct iwl_mvm *mvm = data->mvm;
1750 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1751 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1752 struct iwl_fw_bcast_mac *bcast_mac;
1753 int i;
1754
1755 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1756 return;
1757
1758 bcast_mac = &cmd->macs[mvmvif->id];
1759
1760 /*
1761 * enable filtering only for associated stations, but not for P2P
1762 * Clients
1763 */
1764 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1765 !vif->bss_conf.assoc)
1766 return;
1767
1768 bcast_mac->default_discard = 1;
1769
1770 /* copy all configured filters */
1771 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1772 /*
1773 * Make sure we don't exceed our filters limit.
1774 * if there is still a valid filter to be configured,
1775 * be on the safe side and just allow bcast for this mac.
1776 */
1777 if (WARN_ON_ONCE(data->current_filter >=
1778 ARRAY_SIZE(cmd->filters))) {
1779 bcast_mac->default_discard = 0;
1780 bcast_mac->attached_filters = 0;
1781 break;
1782 }
1783
1784 iwl_mvm_set_bcast_filter(vif,
1785 &mvm->bcast_filters[i],
1786 &cmd->filters[data->current_filter]);
1787
1788 /* skip current filter if it contains no attributes */
1789 if (!cmd->filters[data->current_filter].num_attrs)
1790 continue;
1791
1792 /* attach the filter to current mac */
1793 bcast_mac->attached_filters |=
1794 cpu_to_le16(BIT(data->current_filter));
1795
1796 data->current_filter++;
1797 }
1798 }
1799
1800 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1801 struct iwl_bcast_filter_cmd *cmd)
1802 {
1803 struct iwl_bcast_iter_data iter_data = {
1804 .mvm = mvm,
1805 .cmd = cmd,
1806 };
1807
1808 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1809 return false;
1810
1811 memset(cmd, 0, sizeof(*cmd));
1812 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1813 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1814
1815 #ifdef CONFIG_IWLWIFI_DEBUGFS
1816 /* use debugfs filters/macs if override is configured */
1817 if (mvm->dbgfs_bcast_filtering.override) {
1818 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1819 sizeof(cmd->filters));
1820 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1821 sizeof(cmd->macs));
1822 return true;
1823 }
1824 #endif
1825
1826 /* if no filters are configured, do nothing */
1827 if (!mvm->bcast_filters)
1828 return false;
1829
1830 /* configure and attach these filters for each associated sta vif */
1831 ieee80211_iterate_active_interfaces(
1832 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1833 iwl_mvm_bcast_filter_iterator, &iter_data);
1834
1835 return true;
1836 }
1837
1838 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1839 {
1840 struct iwl_bcast_filter_cmd cmd;
1841
1842 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1843 return 0;
1844
1845 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1846 return 0;
1847
1848 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1849 sizeof(cmd), &cmd);
1850 }
1851 #else
1852 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1853 {
1854 return 0;
1855 }
1856 #endif
1857
1858 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1859 struct ieee80211_vif *vif)
1860 {
1861 struct iwl_mu_group_mgmt_cmd cmd = {};
1862
1863 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1864 WLAN_MEMBERSHIP_LEN);
1865 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1866 WLAN_USER_POSITION_LEN);
1867
1868 return iwl_mvm_send_cmd_pdu(mvm,
1869 WIDE_ID(DATA_PATH_GROUP,
1870 UPDATE_MU_GROUPS_CMD),
1871 0, sizeof(cmd), &cmd);
1872 }
1873
1874 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1875 struct ieee80211_vif *vif)
1876 {
1877 if (vif->mu_mimo_owner) {
1878 struct iwl_mu_group_mgmt_notif *notif = _data;
1879
1880 /*
1881 * MU-MIMO Group Id action frame is little endian. We treat
1882 * the data received from firmware as if it came from the
1883 * action frame, so no conversion is needed.
1884 */
1885 ieee80211_update_mu_groups(vif,
1886 (u8 *)&notif->membership_status,
1887 (u8 *)&notif->user_position);
1888 }
1889 }
1890
1891 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1892 struct iwl_rx_cmd_buffer *rxb)
1893 {
1894 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1895 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1896
1897 ieee80211_iterate_active_interfaces_atomic(
1898 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1899 iwl_mvm_mu_mimo_iface_iterator, notif);
1900 }
1901
1902 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1903 struct ieee80211_vif *vif,
1904 struct ieee80211_bss_conf *bss_conf,
1905 u32 changes)
1906 {
1907 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1908 int ret;
1909
1910 /*
1911 * Re-calculate the tsf id, as the master-slave relations depend on the
1912 * beacon interval, which was not known when the station interface was
1913 * added.
1914 */
1915 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1916 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1917
1918 if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1919 mvmvif->lqm_active)
1920 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1921 0, 0);
1922
1923 /*
1924 * If we're not associated yet, take the (new) BSSID before associating
1925 * so the firmware knows. If we're already associated, then use the old
1926 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1927 * branch for disassociation below.
1928 */
1929 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1930 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1931
1932 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1933 if (ret)
1934 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1935
1936 /* after sending it once, adopt mac80211 data */
1937 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1938 mvmvif->associated = bss_conf->assoc;
1939
1940 if (changes & BSS_CHANGED_ASSOC) {
1941 if (bss_conf->assoc) {
1942 /* clear statistics to get clean beacon counter */
1943 iwl_mvm_request_statistics(mvm, true);
1944 memset(&mvmvif->beacon_stats, 0,
1945 sizeof(mvmvif->beacon_stats));
1946
1947 /* add quota for this interface */
1948 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1949 if (ret) {
1950 IWL_ERR(mvm, "failed to update quotas\n");
1951 return;
1952 }
1953
1954 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1955 &mvm->status)) {
1956 /*
1957 * If we're restarting then the firmware will
1958 * obviously have lost synchronisation with
1959 * the AP. It will attempt to synchronise by
1960 * itself, but we can make it more reliable by
1961 * scheduling a session protection time event.
1962 *
1963 * The firmware needs to receive a beacon to
1964 * catch up with synchronisation, use 110% of
1965 * the beacon interval.
1966 *
1967 * Set a large maximum delay to allow for more
1968 * than a single interface.
1969 */
1970 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1971 iwl_mvm_protect_session(mvm, vif, dur, dur,
1972 5 * dur, false);
1973 }
1974
1975 iwl_mvm_sf_update(mvm, vif, false);
1976 iwl_mvm_power_vif_assoc(mvm, vif);
1977 if (vif->p2p) {
1978 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1979 iwl_mvm_update_smps(mvm, vif,
1980 IWL_MVM_SMPS_REQ_PROT,
1981 IEEE80211_SMPS_DYNAMIC);
1982 }
1983 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
1984 /*
1985 * If update fails - SF might be running in associated
1986 * mode while disassociated - which is forbidden.
1987 */
1988 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1989 "Failed to update SF upon disassociation\n");
1990
1991 /*
1992 * If we get an assert during the connection (after the
1993 * station has been added, but before the vif is set
1994 * to associated), mac80211 will re-add the station and
1995 * then configure the vif. Since the vif is not
1996 * associated, we would remove the station here and
1997 * this would fail the recovery.
1998 */
1999 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2000 &mvm->status)) {
2001 /*
2002 * Remove AP station now that
2003 * the MAC is unassoc
2004 */
2005 ret = iwl_mvm_rm_sta_id(mvm, vif,
2006 mvmvif->ap_sta_id);
2007 if (ret)
2008 IWL_ERR(mvm,
2009 "failed to remove AP station\n");
2010
2011 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2012 mvm->d0i3_ap_sta_id =
2013 IWL_MVM_INVALID_STA;
2014 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
2015 }
2016
2017 /* remove quota for this interface */
2018 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2019 if (ret)
2020 IWL_ERR(mvm, "failed to update quotas\n");
2021
2022 if (vif->p2p)
2023 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2024
2025 /* this will take the cleared BSSID from bss_conf */
2026 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2027 if (ret)
2028 IWL_ERR(mvm,
2029 "failed to update MAC %pM (clear after unassoc)\n",
2030 vif->addr);
2031 }
2032
2033 /*
2034 * The firmware tracks the MU-MIMO group on its own.
2035 * However, on HW restart we should restore this data.
2036 */
2037 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2038 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2039 ret = iwl_mvm_update_mu_groups(mvm, vif);
2040 if (ret)
2041 IWL_ERR(mvm,
2042 "failed to update VHT MU_MIMO groups\n");
2043 }
2044
2045 iwl_mvm_recalc_multicast(mvm);
2046 iwl_mvm_configure_bcast_filter(mvm);
2047
2048 /* reset rssi values */
2049 mvmvif->bf_data.ave_beacon_signal = 0;
2050
2051 iwl_mvm_bt_coex_vif_change(mvm);
2052 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2053 IEEE80211_SMPS_AUTOMATIC);
2054 if (fw_has_capa(&mvm->fw->ucode_capa,
2055 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2056 iwl_mvm_config_scan(mvm);
2057 }
2058
2059 if (changes & BSS_CHANGED_BEACON_INFO) {
2060 /*
2061 * We received a beacon from the associated AP so
2062 * remove the session protection.
2063 */
2064 iwl_mvm_remove_time_event(mvm, mvmvif,
2065 &mvmvif->time_event_data);
2066
2067 iwl_mvm_sf_update(mvm, vif, false);
2068 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2069 }
2070
2071 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2072 /*
2073 * Send power command on every beacon change,
2074 * because we may have not enabled beacon abort yet.
2075 */
2076 BSS_CHANGED_BEACON_INFO)) {
2077 ret = iwl_mvm_power_update_mac(mvm);
2078 if (ret)
2079 IWL_ERR(mvm, "failed to update power mode\n");
2080 }
2081
2082 if (changes & BSS_CHANGED_TXPOWER) {
2083 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2084 bss_conf->txpower);
2085 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2086 }
2087
2088 if (changes & BSS_CHANGED_CQM) {
2089 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2090 /* reset cqm events tracking */
2091 mvmvif->bf_data.last_cqm_event = 0;
2092 if (mvmvif->bf_data.bf_enabled) {
2093 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2094 if (ret)
2095 IWL_ERR(mvm,
2096 "failed to update CQM thresholds\n");
2097 }
2098 }
2099
2100 if (changes & BSS_CHANGED_ARP_FILTER) {
2101 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2102 iwl_mvm_configure_bcast_filter(mvm);
2103 }
2104 }
2105
2106 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2107 struct ieee80211_vif *vif)
2108 {
2109 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2110 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2111 int ret;
2112
2113 /*
2114 * iwl_mvm_mac_ctxt_add() might read directly from the device
2115 * (the system time), so make sure it is available.
2116 */
2117 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2118 if (ret)
2119 return ret;
2120
2121 mutex_lock(&mvm->mutex);
2122
2123 /* Send the beacon template */
2124 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2125 if (ret)
2126 goto out_unlock;
2127
2128 /*
2129 * Re-calculate the tsf id, as the master-slave relations depend on the
2130 * beacon interval, which was not known when the AP interface was added.
2131 */
2132 if (vif->type == NL80211_IFTYPE_AP)
2133 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2134
2135 mvmvif->ap_assoc_sta_count = 0;
2136
2137 /* Add the mac context */
2138 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2139 if (ret)
2140 goto out_unlock;
2141
2142 /* Perform the binding */
2143 ret = iwl_mvm_binding_add_vif(mvm, vif);
2144 if (ret)
2145 goto out_remove;
2146
2147 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2148 if (ret)
2149 goto out_unbind;
2150
2151 /* Send the bcast station. At this stage the TBTT and DTIM time events
2152 * are added and applied to the scheduler */
2153 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2154 if (ret)
2155 goto out_rm_mcast;
2156
2157 /* must be set before quota calculations */
2158 mvmvif->ap_ibss_active = true;
2159
2160 /* power updated needs to be done before quotas */
2161 iwl_mvm_power_update_mac(mvm);
2162
2163 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2164 if (ret)
2165 goto out_quota_failed;
2166
2167 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2168 if (vif->p2p && mvm->p2p_device_vif)
2169 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2170
2171 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2172
2173 iwl_mvm_bt_coex_vif_change(mvm);
2174
2175 /* we don't support TDLS during DCM */
2176 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2177 iwl_mvm_teardown_tdls_peers(mvm);
2178
2179 goto out_unlock;
2180
2181 out_quota_failed:
2182 iwl_mvm_power_update_mac(mvm);
2183 mvmvif->ap_ibss_active = false;
2184 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2185 out_rm_mcast:
2186 iwl_mvm_rm_mcast_sta(mvm, vif);
2187 out_unbind:
2188 iwl_mvm_binding_remove_vif(mvm, vif);
2189 out_remove:
2190 iwl_mvm_mac_ctxt_remove(mvm, vif);
2191 out_unlock:
2192 mutex_unlock(&mvm->mutex);
2193 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2194 return ret;
2195 }
2196
2197 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2198 struct ieee80211_vif *vif)
2199 {
2200 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2201 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2202
2203 iwl_mvm_prepare_mac_removal(mvm, vif);
2204
2205 mutex_lock(&mvm->mutex);
2206
2207 /* Handle AP stop while in CSA */
2208 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2209 iwl_mvm_remove_time_event(mvm, mvmvif,
2210 &mvmvif->time_event_data);
2211 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2212 mvmvif->csa_countdown = false;
2213 }
2214
2215 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2216 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2217 mvm->csa_tx_block_bcn_timeout = 0;
2218 }
2219
2220 mvmvif->ap_ibss_active = false;
2221 mvm->ap_last_beacon_gp2 = 0;
2222
2223 iwl_mvm_bt_coex_vif_change(mvm);
2224
2225 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2226
2227 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2228 if (vif->p2p && mvm->p2p_device_vif)
2229 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2230
2231 iwl_mvm_update_quotas(mvm, false, NULL);
2232
2233 /*
2234 * This is not very nice, but the simplest:
2235 * For older FWs removing the mcast sta before the bcast station may
2236 * cause assert 0x2b00.
2237 * This is fixed in later FW (which will stop beaconing when removing
2238 * bcast station).
2239 * So make the order of removal depend on the TLV
2240 */
2241 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2242 iwl_mvm_rm_mcast_sta(mvm, vif);
2243 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2244 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2245 iwl_mvm_rm_mcast_sta(mvm, vif);
2246 iwl_mvm_binding_remove_vif(mvm, vif);
2247
2248 iwl_mvm_power_update_mac(mvm);
2249
2250 iwl_mvm_mac_ctxt_remove(mvm, vif);
2251
2252 mutex_unlock(&mvm->mutex);
2253 }
2254
2255 static void
2256 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2257 struct ieee80211_vif *vif,
2258 struct ieee80211_bss_conf *bss_conf,
2259 u32 changes)
2260 {
2261 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2262
2263 /* Changes will be applied when the AP/IBSS is started */
2264 if (!mvmvif->ap_ibss_active)
2265 return;
2266
2267 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2268 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2269 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2270 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2271
2272 /* Need to send a new beacon template to the FW */
2273 if (changes & BSS_CHANGED_BEACON &&
2274 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2275 IWL_WARN(mvm, "Failed updating beacon data\n");
2276
2277 if (changes & BSS_CHANGED_TXPOWER) {
2278 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2279 bss_conf->txpower);
2280 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2281 }
2282 }
2283
2284 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2285 struct ieee80211_vif *vif,
2286 struct ieee80211_bss_conf *bss_conf,
2287 u32 changes)
2288 {
2289 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2290
2291 /*
2292 * iwl_mvm_bss_info_changed_station() might call
2293 * iwl_mvm_protect_session(), which reads directly from
2294 * the device (the system time), so make sure it is available.
2295 */
2296 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2297 return;
2298
2299 mutex_lock(&mvm->mutex);
2300
2301 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2302 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2303
2304 switch (vif->type) {
2305 case NL80211_IFTYPE_STATION:
2306 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2307 break;
2308 case NL80211_IFTYPE_AP:
2309 case NL80211_IFTYPE_ADHOC:
2310 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2311 break;
2312 case NL80211_IFTYPE_MONITOR:
2313 if (changes & BSS_CHANGED_MU_GROUPS)
2314 iwl_mvm_update_mu_groups(mvm, vif);
2315 break;
2316 default:
2317 /* shouldn't happen */
2318 WARN_ON_ONCE(1);
2319 }
2320
2321 mutex_unlock(&mvm->mutex);
2322 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2323 }
2324
2325 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2326 struct ieee80211_vif *vif,
2327 struct ieee80211_scan_request *hw_req)
2328 {
2329 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2330 int ret;
2331
2332 if (hw_req->req.n_channels == 0 ||
2333 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2334 return -EINVAL;
2335
2336 mutex_lock(&mvm->mutex);
2337 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2338 mutex_unlock(&mvm->mutex);
2339
2340 return ret;
2341 }
2342
2343 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2344 struct ieee80211_vif *vif)
2345 {
2346 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2347
2348 mutex_lock(&mvm->mutex);
2349
2350 /* Due to a race condition, it's possible that mac80211 asks
2351 * us to stop a hw_scan when it's already stopped. This can
2352 * happen, for instance, if we stopped the scan ourselves,
2353 * called ieee80211_scan_completed() and the userspace called
2354 * cancel scan scan before ieee80211_scan_work() could run.
2355 * To handle that, simply return if the scan is not running.
2356 */
2357 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2358 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2359
2360 mutex_unlock(&mvm->mutex);
2361 }
2362
2363 static void
2364 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2365 struct ieee80211_sta *sta, u16 tids,
2366 int num_frames,
2367 enum ieee80211_frame_release_type reason,
2368 bool more_data)
2369 {
2370 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2371
2372 /* Called when we need to transmit (a) frame(s) from mac80211 */
2373
2374 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2375 tids, more_data, false);
2376 }
2377
2378 static void
2379 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2380 struct ieee80211_sta *sta, u16 tids,
2381 int num_frames,
2382 enum ieee80211_frame_release_type reason,
2383 bool more_data)
2384 {
2385 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2386
2387 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2388
2389 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2390 tids, more_data, true);
2391 }
2392
2393 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2394 enum sta_notify_cmd cmd,
2395 struct ieee80211_sta *sta)
2396 {
2397 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2398 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2399 unsigned long txqs = 0, tids = 0;
2400 int tid;
2401
2402 spin_lock_bh(&mvmsta->lock);
2403 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2404 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2405
2406 if (!iwl_mvm_is_dqa_supported(mvm) &&
2407 tid_data->state != IWL_AGG_ON &&
2408 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2409 continue;
2410
2411 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2412 continue;
2413
2414 __set_bit(tid_data->txq_id, &txqs);
2415
2416 if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2417 continue;
2418
2419 __set_bit(tid, &tids);
2420 }
2421
2422 switch (cmd) {
2423 case STA_NOTIFY_SLEEP:
2424 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2425 ieee80211_sta_block_awake(hw, sta, true);
2426
2427 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2428 ieee80211_sta_set_buffered(sta, tid, true);
2429
2430 if (txqs)
2431 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2432 /*
2433 * The fw updates the STA to be asleep. Tx packets on the Tx
2434 * queues to this station will not be transmitted. The fw will
2435 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2436 */
2437 break;
2438 case STA_NOTIFY_AWAKE:
2439 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2440 break;
2441
2442 if (txqs)
2443 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2444 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2445 break;
2446 default:
2447 break;
2448 }
2449 spin_unlock_bh(&mvmsta->lock);
2450 }
2451
2452 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2453 struct ieee80211_vif *vif,
2454 enum sta_notify_cmd cmd,
2455 struct ieee80211_sta *sta)
2456 {
2457 __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2458 }
2459
2460 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2461 {
2462 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2463 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2464 struct ieee80211_sta *sta;
2465 struct iwl_mvm_sta *mvmsta;
2466 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2467
2468 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2469 return;
2470
2471 rcu_read_lock();
2472 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2473 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2474 rcu_read_unlock();
2475 return;
2476 }
2477
2478 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2479
2480 if (!mvmsta->vif ||
2481 mvmsta->vif->type != NL80211_IFTYPE_AP) {
2482 rcu_read_unlock();
2483 return;
2484 }
2485
2486 if (mvmsta->sleeping != sleeping) {
2487 mvmsta->sleeping = sleeping;
2488 __iwl_mvm_mac_sta_notify(mvm->hw,
2489 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2490 sta);
2491 ieee80211_sta_ps_transition(sta, sleeping);
2492 }
2493
2494 if (sleeping) {
2495 switch (notif->type) {
2496 case IWL_MVM_PM_EVENT_AWAKE:
2497 case IWL_MVM_PM_EVENT_ASLEEP:
2498 break;
2499 case IWL_MVM_PM_EVENT_UAPSD:
2500 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2501 break;
2502 case IWL_MVM_PM_EVENT_PS_POLL:
2503 ieee80211_sta_pspoll(sta);
2504 break;
2505 default:
2506 break;
2507 }
2508 }
2509
2510 rcu_read_unlock();
2511 }
2512
2513 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2514 struct ieee80211_vif *vif,
2515 struct ieee80211_sta *sta)
2516 {
2517 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2518 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2519
2520 /*
2521 * This is called before mac80211 does RCU synchronisation,
2522 * so here we already invalidate our internal RCU-protected
2523 * station pointer. The rest of the code will thus no longer
2524 * be able to find the station this way, and we don't rely
2525 * on further RCU synchronisation after the sta_state()
2526 * callback deleted the station.
2527 */
2528 mutex_lock(&mvm->mutex);
2529 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2530 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2531 ERR_PTR(-ENOENT));
2532
2533 mutex_unlock(&mvm->mutex);
2534 }
2535
2536 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2537 const u8 *bssid)
2538 {
2539 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2540 return;
2541
2542 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2543 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2544 return;
2545 }
2546
2547 if (!vif->p2p &&
2548 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2549 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2550 return;
2551 }
2552
2553 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2554 }
2555
2556 static void
2557 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2558 struct ieee80211_vif *vif, u8 *peer_addr,
2559 enum nl80211_tdls_operation action)
2560 {
2561 struct iwl_fw_dbg_trigger_tlv *trig;
2562 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2563
2564 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2565 return;
2566
2567 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2568 tdls_trig = (void *)trig->data;
2569 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2570 return;
2571
2572 if (!(tdls_trig->action_bitmap & BIT(action)))
2573 return;
2574
2575 if (tdls_trig->peer_mode &&
2576 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2577 return;
2578
2579 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2580 "TDLS event occurred, peer %pM, action %d",
2581 peer_addr, action);
2582 }
2583
2584 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2585 struct iwl_mvm_sta *mvm_sta)
2586 {
2587 struct iwl_mvm_tid_data *tid_data;
2588 struct sk_buff *skb;
2589 int i;
2590
2591 spin_lock_bh(&mvm_sta->lock);
2592 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2593 tid_data = &mvm_sta->tid_data[i];
2594 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames)))
2595 ieee80211_free_txskb(mvm->hw, skb);
2596 }
2597 spin_unlock_bh(&mvm_sta->lock);
2598 }
2599
2600 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2601 struct ieee80211_vif *vif,
2602 struct ieee80211_sta *sta,
2603 enum ieee80211_sta_state old_state,
2604 enum ieee80211_sta_state new_state)
2605 {
2606 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2607 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2608 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2609 int ret;
2610
2611 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2612 sta->addr, old_state, new_state);
2613
2614 /* this would be a mac80211 bug ... but don't crash */
2615 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2616 return -EINVAL;
2617
2618 /* if a STA is being removed, reuse its ID */
2619 flush_work(&mvm->sta_drained_wk);
2620
2621 /*
2622 * If we are in a STA removal flow and in DQA mode:
2623 *
2624 * This is after the sync_rcu part, so the queues have already been
2625 * flushed. No more TXs on their way in mac80211's path, and no more in
2626 * the queues.
2627 * Also, we won't be getting any new TX frames for this station.
2628 * What we might have are deferred TX frames that need to be taken care
2629 * of.
2630 *
2631 * Drop any still-queued deferred-frame before removing the STA, and
2632 * make sure the worker is no longer handling frames for this STA.
2633 */
2634 if (old_state == IEEE80211_STA_NONE &&
2635 new_state == IEEE80211_STA_NOTEXIST &&
2636 iwl_mvm_is_dqa_supported(mvm)) {
2637 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2638 flush_work(&mvm->add_stream_wk);
2639
2640 /*
2641 * No need to make sure deferred TX indication is off since the
2642 * worker will already remove it if it was on
2643 */
2644 }
2645
2646 mutex_lock(&mvm->mutex);
2647 /* track whether or not the station is associated */
2648 mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC;
2649
2650 if (old_state == IEEE80211_STA_NOTEXIST &&
2651 new_state == IEEE80211_STA_NONE) {
2652 /*
2653 * Firmware bug - it'll crash if the beacon interval is less
2654 * than 16. We can't avoid connecting at all, so refuse the
2655 * station state change, this will cause mac80211 to abandon
2656 * attempts to connect to this AP, and eventually wpa_s will
2657 * blacklist the AP...
2658 */
2659 if (vif->type == NL80211_IFTYPE_STATION &&
2660 vif->bss_conf.beacon_int < 16) {
2661 IWL_ERR(mvm,
2662 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2663 sta->addr, vif->bss_conf.beacon_int);
2664 ret = -EINVAL;
2665 goto out_unlock;
2666 }
2667
2668 if (sta->tdls &&
2669 (vif->p2p ||
2670 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2671 IWL_MVM_TDLS_STA_COUNT ||
2672 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2673 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2674 ret = -EBUSY;
2675 goto out_unlock;
2676 }
2677
2678 ret = iwl_mvm_add_sta(mvm, vif, sta);
2679 if (sta->tdls && ret == 0) {
2680 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2681 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2682 NL80211_TDLS_SETUP);
2683 }
2684 } else if (old_state == IEEE80211_STA_NONE &&
2685 new_state == IEEE80211_STA_AUTH) {
2686 /*
2687 * EBS may be disabled due to previous failures reported by FW.
2688 * Reset EBS status here assuming environment has been changed.
2689 */
2690 mvm->last_ebs_successful = true;
2691 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2692 ret = 0;
2693 } else if (old_state == IEEE80211_STA_AUTH &&
2694 new_state == IEEE80211_STA_ASSOC) {
2695 if (vif->type == NL80211_IFTYPE_AP) {
2696 mvmvif->ap_assoc_sta_count++;
2697 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2698 }
2699
2700 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2701 true);
2702 ret = iwl_mvm_update_sta(mvm, vif, sta);
2703 } else if (old_state == IEEE80211_STA_ASSOC &&
2704 new_state == IEEE80211_STA_AUTHORIZED) {
2705
2706 /* we don't support TDLS during DCM */
2707 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2708 iwl_mvm_teardown_tdls_peers(mvm);
2709
2710 if (sta->tdls)
2711 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2712 NL80211_TDLS_ENABLE_LINK);
2713
2714 /* enable beacon filtering */
2715 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2716 ret = 0;
2717 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2718 new_state == IEEE80211_STA_ASSOC) {
2719 /* disable beacon filtering */
2720 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2721 ret = 0;
2722 } else if (old_state == IEEE80211_STA_ASSOC &&
2723 new_state == IEEE80211_STA_AUTH) {
2724 if (vif->type == NL80211_IFTYPE_AP) {
2725 mvmvif->ap_assoc_sta_count--;
2726 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2727 }
2728 ret = 0;
2729 } else if (old_state == IEEE80211_STA_AUTH &&
2730 new_state == IEEE80211_STA_NONE) {
2731 ret = 0;
2732 } else if (old_state == IEEE80211_STA_NONE &&
2733 new_state == IEEE80211_STA_NOTEXIST) {
2734 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2735 if (sta->tdls) {
2736 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2737 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2738 NL80211_TDLS_DISABLE_LINK);
2739 }
2740 } else {
2741 ret = -EIO;
2742 }
2743 out_unlock:
2744 mutex_unlock(&mvm->mutex);
2745
2746 if (sta->tdls && ret == 0) {
2747 if (old_state == IEEE80211_STA_NOTEXIST &&
2748 new_state == IEEE80211_STA_NONE)
2749 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2750 else if (old_state == IEEE80211_STA_NONE &&
2751 new_state == IEEE80211_STA_NOTEXIST)
2752 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2753 }
2754
2755 return ret;
2756 }
2757
2758 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2759 {
2760 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2761
2762 mvm->rts_threshold = value;
2763
2764 return 0;
2765 }
2766
2767 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2768 struct ieee80211_vif *vif,
2769 struct ieee80211_sta *sta, u32 changed)
2770 {
2771 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2772
2773 if (vif->type == NL80211_IFTYPE_STATION &&
2774 changed & IEEE80211_RC_NSS_CHANGED)
2775 iwl_mvm_sf_update(mvm, vif, false);
2776 }
2777
2778 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2779 struct ieee80211_vif *vif, u16 ac,
2780 const struct ieee80211_tx_queue_params *params)
2781 {
2782 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2783 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2784
2785 mvmvif->queue_params[ac] = *params;
2786
2787 /*
2788 * No need to update right away, we'll get BSS_CHANGED_QOS
2789 * The exception is P2P_DEVICE interface which needs immediate update.
2790 */
2791 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2792 int ret;
2793
2794 mutex_lock(&mvm->mutex);
2795 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2796 mutex_unlock(&mvm->mutex);
2797 return ret;
2798 }
2799 return 0;
2800 }
2801
2802 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2803 struct ieee80211_vif *vif)
2804 {
2805 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2806 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2807 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2808
2809 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2810 return;
2811
2812 /*
2813 * iwl_mvm_protect_session() reads directly from the device
2814 * (the system time), so make sure it is available.
2815 */
2816 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2817 return;
2818
2819 mutex_lock(&mvm->mutex);
2820 /* Try really hard to protect the session and hear a beacon */
2821 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2822 mutex_unlock(&mvm->mutex);
2823
2824 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2825 }
2826
2827 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2828 struct ieee80211_vif *vif,
2829 struct cfg80211_sched_scan_request *req,
2830 struct ieee80211_scan_ies *ies)
2831 {
2832 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2833
2834 int ret;
2835
2836 mutex_lock(&mvm->mutex);
2837
2838 if (!vif->bss_conf.idle) {
2839 ret = -EBUSY;
2840 goto out;
2841 }
2842
2843 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2844
2845 out:
2846 mutex_unlock(&mvm->mutex);
2847 return ret;
2848 }
2849
2850 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2851 struct ieee80211_vif *vif)
2852 {
2853 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2854 int ret;
2855
2856 mutex_lock(&mvm->mutex);
2857
2858 /* Due to a race condition, it's possible that mac80211 asks
2859 * us to stop a sched_scan when it's already stopped. This
2860 * can happen, for instance, if we stopped the scan ourselves,
2861 * called ieee80211_sched_scan_stopped() and the userspace called
2862 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2863 * could run. To handle this, simply return if the scan is
2864 * not running.
2865 */
2866 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2867 mutex_unlock(&mvm->mutex);
2868 return 0;
2869 }
2870
2871 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2872 mutex_unlock(&mvm->mutex);
2873 iwl_mvm_wait_for_async_handlers(mvm);
2874
2875 return ret;
2876 }
2877
2878 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2879 enum set_key_cmd cmd,
2880 struct ieee80211_vif *vif,
2881 struct ieee80211_sta *sta,
2882 struct ieee80211_key_conf *key)
2883 {
2884 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2885 struct iwl_mvm_sta *mvmsta;
2886 struct iwl_mvm_key_pn *ptk_pn;
2887 int keyidx = key->keyidx;
2888 int ret;
2889 u8 key_offset;
2890
2891 if (iwlwifi_mod_params.swcrypto) {
2892 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2893 return -EOPNOTSUPP;
2894 }
2895
2896 switch (key->cipher) {
2897 case WLAN_CIPHER_SUITE_TKIP:
2898 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2899 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2900 break;
2901 case WLAN_CIPHER_SUITE_CCMP:
2902 case WLAN_CIPHER_SUITE_GCMP:
2903 case WLAN_CIPHER_SUITE_GCMP_256:
2904 if (!iwl_mvm_has_new_tx_api(mvm))
2905 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2906 break;
2907 case WLAN_CIPHER_SUITE_AES_CMAC:
2908 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2909 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2910 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2911 break;
2912 case WLAN_CIPHER_SUITE_WEP40:
2913 case WLAN_CIPHER_SUITE_WEP104:
2914 /* For non-client mode, only use WEP keys for TX as we probably
2915 * don't have a station yet anyway and would then have to keep
2916 * track of the keys, linking them to each of the clients/peers
2917 * as they appear. For now, don't do that, for performance WEP
2918 * offload doesn't really matter much, but we need it for some
2919 * other offload features in client mode.
2920 */
2921 if (vif->type != NL80211_IFTYPE_STATION)
2922 return 0;
2923 break;
2924 default:
2925 /* currently FW supports only one optional cipher scheme */
2926 if (hw->n_cipher_schemes &&
2927 hw->cipher_schemes->cipher == key->cipher)
2928 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2929 else
2930 return -EOPNOTSUPP;
2931 }
2932
2933 mutex_lock(&mvm->mutex);
2934
2935 switch (cmd) {
2936 case SET_KEY:
2937 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2938 vif->type == NL80211_IFTYPE_AP) && !sta) {
2939 /*
2940 * GTK on AP interface is a TX-only key, return 0;
2941 * on IBSS they're per-station and because we're lazy
2942 * we don't support them for RX, so do the same.
2943 * CMAC/GMAC in AP/IBSS modes must be done in software.
2944 */
2945 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2946 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2947 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2948 ret = -EOPNOTSUPP;
2949 else
2950 ret = 0;
2951
2952 if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
2953 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
2954 !iwl_mvm_has_new_tx_api(mvm)) {
2955 key->hw_key_idx = STA_KEY_IDX_INVALID;
2956 break;
2957 }
2958 }
2959
2960 /* During FW restart, in order to restore the state as it was,
2961 * don't try to reprogram keys we previously failed for.
2962 */
2963 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2964 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2965 IWL_DEBUG_MAC80211(mvm,
2966 "skip invalid idx key programming during restart\n");
2967 ret = 0;
2968 break;
2969 }
2970
2971 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2972 sta && iwl_mvm_has_new_rx_api(mvm) &&
2973 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2974 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2975 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2976 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2977 struct ieee80211_key_seq seq;
2978 int tid, q;
2979
2980 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2981 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2982 ptk_pn = kzalloc(sizeof(*ptk_pn) +
2983 mvm->trans->num_rx_queues *
2984 sizeof(ptk_pn->q[0]),
2985 GFP_KERNEL);
2986 if (!ptk_pn) {
2987 ret = -ENOMEM;
2988 break;
2989 }
2990
2991 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2992 ieee80211_get_key_rx_seq(key, tid, &seq);
2993 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2994 memcpy(ptk_pn->q[q].pn[tid],
2995 seq.ccmp.pn,
2996 IEEE80211_CCMP_PN_LEN);
2997 }
2998
2999 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
3000 }
3001
3002 /* in HW restart reuse the index, otherwise request a new one */
3003 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3004 key_offset = key->hw_key_idx;
3005 else
3006 key_offset = STA_KEY_IDX_INVALID;
3007
3008 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3009 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
3010 if (ret) {
3011 IWL_WARN(mvm, "set key failed\n");
3012 /*
3013 * can't add key for RX, but we don't need it
3014 * in the device for TX so still return 0
3015 */
3016 key->hw_key_idx = STA_KEY_IDX_INVALID;
3017 ret = 0;
3018 }
3019
3020 break;
3021 case DISABLE_KEY:
3022 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3023 ret = 0;
3024 break;
3025 }
3026
3027 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
3028 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3029 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3030 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3031 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3032 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3033 ptk_pn = rcu_dereference_protected(
3034 mvmsta->ptk_pn[keyidx],
3035 lockdep_is_held(&mvm->mutex));
3036 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3037 if (ptk_pn)
3038 kfree_rcu(ptk_pn, rcu_head);
3039 }
3040
3041 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3042 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3043 break;
3044 default:
3045 ret = -EINVAL;
3046 }
3047
3048 mutex_unlock(&mvm->mutex);
3049 return ret;
3050 }
3051
3052 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3053 struct ieee80211_vif *vif,
3054 struct ieee80211_key_conf *keyconf,
3055 struct ieee80211_sta *sta,
3056 u32 iv32, u16 *phase1key)
3057 {
3058 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3059
3060 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3061 return;
3062
3063 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3064 }
3065
3066
3067 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3068 struct iwl_rx_packet *pkt, void *data)
3069 {
3070 struct iwl_mvm *mvm =
3071 container_of(notif_wait, struct iwl_mvm, notif_wait);
3072 struct iwl_hs20_roc_res *resp;
3073 int resp_len = iwl_rx_packet_payload_len(pkt);
3074 struct iwl_mvm_time_event_data *te_data = data;
3075
3076 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3077 return true;
3078
3079 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3080 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3081 return true;
3082 }
3083
3084 resp = (void *)pkt->data;
3085
3086 IWL_DEBUG_TE(mvm,
3087 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3088 resp->status, resp->event_unique_id);
3089
3090 te_data->uid = le32_to_cpu(resp->event_unique_id);
3091 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3092 te_data->uid);
3093
3094 spin_lock_bh(&mvm->time_event_lock);
3095 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3096 spin_unlock_bh(&mvm->time_event_lock);
3097
3098 return true;
3099 }
3100
3101 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3102 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3103 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3104 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3105 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3106 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3107 struct ieee80211_channel *channel,
3108 struct ieee80211_vif *vif,
3109 int duration)
3110 {
3111 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3112 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3113 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3114 static const u16 time_event_response[] = { HOT_SPOT_CMD };
3115 struct iwl_notification_wait wait_time_event;
3116 u32 dtim_interval = vif->bss_conf.dtim_period *
3117 vif->bss_conf.beacon_int;
3118 u32 req_dur, delay;
3119 struct iwl_hs20_roc_req aux_roc_req = {
3120 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3121 .id_and_color =
3122 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3123 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3124 /* Set the channel info data */
3125 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3126 PHY_BAND_24 : PHY_BAND_5,
3127 .channel_info.channel = channel->hw_value,
3128 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3129 /* Set the time and duration */
3130 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3131 };
3132
3133 delay = AUX_ROC_MIN_DELAY;
3134 req_dur = MSEC_TO_TU(duration);
3135
3136 /*
3137 * If we are associated we want the delay time to be at least one
3138 * dtim interval so that the FW can wait until after the DTIM and
3139 * then start the time event, this will potentially allow us to
3140 * remain off-channel for the max duration.
3141 * Since we want to use almost a whole dtim interval we would also
3142 * like the delay to be for 2-3 dtim intervals, in case there are
3143 * other time events with higher priority.
3144 */
3145 if (vif->bss_conf.assoc) {
3146 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3147 /* We cannot remain off-channel longer than the DTIM interval */
3148 if (dtim_interval <= req_dur) {
3149 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3150 if (req_dur <= AUX_ROC_MIN_DURATION)
3151 req_dur = dtim_interval -
3152 AUX_ROC_MIN_SAFETY_BUFFER;
3153 }
3154 }
3155
3156 aux_roc_req.duration = cpu_to_le32(req_dur);
3157 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3158
3159 IWL_DEBUG_TE(mvm,
3160 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3161 channel->hw_value, req_dur, duration, delay,
3162 dtim_interval);
3163 /* Set the node address */
3164 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3165
3166 lockdep_assert_held(&mvm->mutex);
3167
3168 spin_lock_bh(&mvm->time_event_lock);
3169
3170 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3171 spin_unlock_bh(&mvm->time_event_lock);
3172 return -EIO;
3173 }
3174
3175 te_data->vif = vif;
3176 te_data->duration = duration;
3177 te_data->id = HOT_SPOT_CMD;
3178
3179 spin_unlock_bh(&mvm->time_event_lock);
3180
3181 /*
3182 * Use a notification wait, which really just processes the
3183 * command response and doesn't wait for anything, in order
3184 * to be able to process the response and get the UID inside
3185 * the RX path. Using CMD_WANT_SKB doesn't work because it
3186 * stores the buffer and then wakes up this thread, by which
3187 * time another notification (that the time event started)
3188 * might already be processed unsuccessfully.
3189 */
3190 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3191 time_event_response,
3192 ARRAY_SIZE(time_event_response),
3193 iwl_mvm_rx_aux_roc, te_data);
3194
3195 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3196 &aux_roc_req);
3197
3198 if (res) {
3199 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3200 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3201 goto out_clear_te;
3202 }
3203
3204 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3205 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3206 /* should never fail */
3207 WARN_ON_ONCE(res);
3208
3209 if (res) {
3210 out_clear_te:
3211 spin_lock_bh(&mvm->time_event_lock);
3212 iwl_mvm_te_clear_data(mvm, te_data);
3213 spin_unlock_bh(&mvm->time_event_lock);
3214 }
3215
3216 return res;
3217 }
3218
3219 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3220 struct ieee80211_vif *vif,
3221 struct ieee80211_channel *channel,
3222 int duration,
3223 enum ieee80211_roc_type type)
3224 {
3225 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3226 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3227 struct cfg80211_chan_def chandef;
3228 struct iwl_mvm_phy_ctxt *phy_ctxt;
3229 int ret, i;
3230
3231 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3232 duration, type);
3233
3234 flush_work(&mvm->roc_done_wk);
3235
3236 mutex_lock(&mvm->mutex);
3237
3238 switch (vif->type) {
3239 case NL80211_IFTYPE_STATION:
3240 if (fw_has_capa(&mvm->fw->ucode_capa,
3241 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3242 /* Use aux roc framework (HS20) */
3243 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3244 vif, duration);
3245 goto out_unlock;
3246 }
3247 IWL_ERR(mvm, "hotspot not supported\n");
3248 ret = -EINVAL;
3249 goto out_unlock;
3250 case NL80211_IFTYPE_P2P_DEVICE:
3251 /* handle below */
3252 break;
3253 default:
3254 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3255 ret = -EINVAL;
3256 goto out_unlock;
3257 }
3258
3259 for (i = 0; i < NUM_PHY_CTX; i++) {
3260 phy_ctxt = &mvm->phy_ctxts[i];
3261 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3262 continue;
3263
3264 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3265 /*
3266 * Unbind the P2P_DEVICE from the current PHY context,
3267 * and if the PHY context is not used remove it.
3268 */
3269 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3270 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3271 goto out_unlock;
3272
3273 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3274
3275 /* Bind the P2P_DEVICE to the current PHY Context */
3276 mvmvif->phy_ctxt = phy_ctxt;
3277
3278 ret = iwl_mvm_binding_add_vif(mvm, vif);
3279 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3280 goto out_unlock;
3281
3282 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3283 goto schedule_time_event;
3284 }
3285 }
3286
3287 /* Need to update the PHY context only if the ROC channel changed */
3288 if (channel == mvmvif->phy_ctxt->channel)
3289 goto schedule_time_event;
3290
3291 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3292
3293 /*
3294 * Change the PHY context configuration as it is currently referenced
3295 * only by the P2P Device MAC
3296 */
3297 if (mvmvif->phy_ctxt->ref == 1) {
3298 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3299 &chandef, 1, 1);
3300 if (ret)
3301 goto out_unlock;
3302 } else {
3303 /*
3304 * The PHY context is shared with other MACs. Need to remove the
3305 * P2P Device from the binding, allocate an new PHY context and
3306 * create a new binding
3307 */
3308 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3309 if (!phy_ctxt) {
3310 ret = -ENOSPC;
3311 goto out_unlock;
3312 }
3313
3314 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3315 1, 1);
3316 if (ret) {
3317 IWL_ERR(mvm, "Failed to change PHY context\n");
3318 goto out_unlock;
3319 }
3320
3321 /* Unbind the P2P_DEVICE from the current PHY context */
3322 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3323 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3324 goto out_unlock;
3325
3326 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3327
3328 /* Bind the P2P_DEVICE to the new allocated PHY context */
3329 mvmvif->phy_ctxt = phy_ctxt;
3330
3331 ret = iwl_mvm_binding_add_vif(mvm, vif);
3332 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3333 goto out_unlock;
3334
3335 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3336 }
3337
3338 schedule_time_event:
3339 /* Schedule the time events */
3340 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3341
3342 out_unlock:
3343 mutex_unlock(&mvm->mutex);
3344 IWL_DEBUG_MAC80211(mvm, "leave\n");
3345 return ret;
3346 }
3347
3348 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3349 {
3350 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3351
3352 IWL_DEBUG_MAC80211(mvm, "enter\n");
3353
3354 mutex_lock(&mvm->mutex);
3355 iwl_mvm_stop_roc(mvm);
3356 mutex_unlock(&mvm->mutex);
3357
3358 IWL_DEBUG_MAC80211(mvm, "leave\n");
3359 return 0;
3360 }
3361
3362 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3363 struct ieee80211_chanctx_conf *ctx)
3364 {
3365 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3366 struct iwl_mvm_phy_ctxt *phy_ctxt;
3367 int ret;
3368
3369 lockdep_assert_held(&mvm->mutex);
3370
3371 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3372
3373 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3374 if (!phy_ctxt) {
3375 ret = -ENOSPC;
3376 goto out;
3377 }
3378
3379 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3380 ctx->rx_chains_static,
3381 ctx->rx_chains_dynamic);
3382 if (ret) {
3383 IWL_ERR(mvm, "Failed to add PHY context\n");
3384 goto out;
3385 }
3386
3387 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3388 *phy_ctxt_id = phy_ctxt->id;
3389 out:
3390 return ret;
3391 }
3392
3393 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3394 struct ieee80211_chanctx_conf *ctx)
3395 {
3396 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3397 int ret;
3398
3399 mutex_lock(&mvm->mutex);
3400 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3401 mutex_unlock(&mvm->mutex);
3402
3403 return ret;
3404 }
3405
3406 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3407 struct ieee80211_chanctx_conf *ctx)
3408 {
3409 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3410 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3411
3412 lockdep_assert_held(&mvm->mutex);
3413
3414 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3415 }
3416
3417 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3418 struct ieee80211_chanctx_conf *ctx)
3419 {
3420 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3421
3422 mutex_lock(&mvm->mutex);
3423 __iwl_mvm_remove_chanctx(mvm, ctx);
3424 mutex_unlock(&mvm->mutex);
3425 }
3426
3427 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3428 struct ieee80211_chanctx_conf *ctx,
3429 u32 changed)
3430 {
3431 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3432 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3433 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3434
3435 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3436 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3437 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3438 IEEE80211_CHANCTX_CHANGE_RADAR |
3439 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3440 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3441 phy_ctxt->ref, changed))
3442 return;
3443
3444 mutex_lock(&mvm->mutex);
3445 iwl_mvm_bt_coex_vif_change(mvm);
3446 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3447 ctx->rx_chains_static,
3448 ctx->rx_chains_dynamic);
3449 mutex_unlock(&mvm->mutex);
3450 }
3451
3452 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3453 struct ieee80211_vif *vif,
3454 struct ieee80211_chanctx_conf *ctx,
3455 bool switching_chanctx)
3456 {
3457 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3458 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3459 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3460 int ret;
3461
3462 lockdep_assert_held(&mvm->mutex);
3463
3464 mvmvif->phy_ctxt = phy_ctxt;
3465
3466 switch (vif->type) {
3467 case NL80211_IFTYPE_AP:
3468 /* only needed if we're switching chanctx (i.e. during CSA) */
3469 if (switching_chanctx) {
3470 mvmvif->ap_ibss_active = true;
3471 break;
3472 }
3473 case NL80211_IFTYPE_ADHOC:
3474 /*
3475 * The AP binding flow is handled as part of the start_ap flow
3476 * (in bss_info_changed), similarly for IBSS.
3477 */
3478 ret = 0;
3479 goto out;
3480 case NL80211_IFTYPE_STATION:
3481 break;
3482 case NL80211_IFTYPE_MONITOR:
3483 /* always disable PS when a monitor interface is active */
3484 mvmvif->ps_disabled = true;
3485 break;
3486 default:
3487 ret = -EINVAL;
3488 goto out;
3489 }
3490
3491 ret = iwl_mvm_binding_add_vif(mvm, vif);
3492 if (ret)
3493 goto out;
3494
3495 /*
3496 * Power state must be updated before quotas,
3497 * otherwise fw will complain.
3498 */
3499 iwl_mvm_power_update_mac(mvm);
3500
3501 /* Setting the quota at this stage is only required for monitor
3502 * interfaces. For the other types, the bss_info changed flow
3503 * will handle quota settings.
3504 */
3505 if (vif->type == NL80211_IFTYPE_MONITOR) {
3506 mvmvif->monitor_active = true;
3507 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3508 if (ret)
3509 goto out_remove_binding;
3510
3511 ret = iwl_mvm_add_snif_sta(mvm, vif);
3512 if (ret)
3513 goto out_remove_binding;
3514
3515 }
3516
3517 /* Handle binding during CSA */
3518 if (vif->type == NL80211_IFTYPE_AP) {
3519 iwl_mvm_update_quotas(mvm, false, NULL);
3520 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3521 }
3522
3523 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3524 u32 duration = 2 * vif->bss_conf.beacon_int;
3525
3526 /* iwl_mvm_protect_session() reads directly from the
3527 * device (the system time), so make sure it is
3528 * available.
3529 */
3530 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3531 if (ret)
3532 goto out_remove_binding;
3533
3534 /* Protect the session to make sure we hear the first
3535 * beacon on the new channel.
3536 */
3537 iwl_mvm_protect_session(mvm, vif, duration, duration,
3538 vif->bss_conf.beacon_int / 2,
3539 true);
3540
3541 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3542
3543 iwl_mvm_update_quotas(mvm, false, NULL);
3544 }
3545
3546 goto out;
3547
3548 out_remove_binding:
3549 iwl_mvm_binding_remove_vif(mvm, vif);
3550 iwl_mvm_power_update_mac(mvm);
3551 out:
3552 if (ret)
3553 mvmvif->phy_ctxt = NULL;
3554 return ret;
3555 }
3556 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3557 struct ieee80211_vif *vif,
3558 struct ieee80211_chanctx_conf *ctx)
3559 {
3560 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3561 int ret;
3562
3563 mutex_lock(&mvm->mutex);
3564 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3565 mutex_unlock(&mvm->mutex);
3566
3567 return ret;
3568 }
3569
3570 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3571 struct ieee80211_vif *vif,
3572 struct ieee80211_chanctx_conf *ctx,
3573 bool switching_chanctx)
3574 {
3575 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3576 struct ieee80211_vif *disabled_vif = NULL;
3577
3578 lockdep_assert_held(&mvm->mutex);
3579
3580 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3581
3582 switch (vif->type) {
3583 case NL80211_IFTYPE_ADHOC:
3584 goto out;
3585 case NL80211_IFTYPE_MONITOR:
3586 mvmvif->monitor_active = false;
3587 mvmvif->ps_disabled = false;
3588 iwl_mvm_rm_snif_sta(mvm, vif);
3589 break;
3590 case NL80211_IFTYPE_AP:
3591 /* This part is triggered only during CSA */
3592 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3593 goto out;
3594
3595 mvmvif->csa_countdown = false;
3596
3597 /* Set CS bit on all the stations */
3598 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3599
3600 /* Save blocked iface, the timeout is set on the next beacon */
3601 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3602
3603 mvmvif->ap_ibss_active = false;
3604 break;
3605 case NL80211_IFTYPE_STATION:
3606 if (!switching_chanctx)
3607 break;
3608
3609 disabled_vif = vif;
3610
3611 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3612 break;
3613 default:
3614 break;
3615 }
3616
3617 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3618 iwl_mvm_binding_remove_vif(mvm, vif);
3619
3620 out:
3621 mvmvif->phy_ctxt = NULL;
3622 iwl_mvm_power_update_mac(mvm);
3623 }
3624
3625 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3626 struct ieee80211_vif *vif,
3627 struct ieee80211_chanctx_conf *ctx)
3628 {
3629 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3630
3631 mutex_lock(&mvm->mutex);
3632 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3633 mutex_unlock(&mvm->mutex);
3634 }
3635
3636 static int
3637 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3638 struct ieee80211_vif_chanctx_switch *vifs)
3639 {
3640 int ret;
3641
3642 mutex_lock(&mvm->mutex);
3643 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3644 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3645
3646 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3647 if (ret) {
3648 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3649 goto out_reassign;
3650 }
3651
3652 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3653 true);
3654 if (ret) {
3655 IWL_ERR(mvm,
3656 "failed to assign new_ctx during channel switch\n");
3657 goto out_remove;
3658 }
3659
3660 /* we don't support TDLS during DCM - can be caused by channel switch */
3661 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3662 iwl_mvm_teardown_tdls_peers(mvm);
3663
3664 goto out;
3665
3666 out_remove:
3667 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3668
3669 out_reassign:
3670 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3671 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3672 goto out_restart;
3673 }
3674
3675 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3676 true)) {
3677 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3678 goto out_restart;
3679 }
3680
3681 goto out;
3682
3683 out_restart:
3684 /* things keep failing, better restart the hw */
3685 iwl_mvm_nic_restart(mvm, false);
3686
3687 out:
3688 mutex_unlock(&mvm->mutex);
3689
3690 return ret;
3691 }
3692
3693 static int
3694 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3695 struct ieee80211_vif_chanctx_switch *vifs)
3696 {
3697 int ret;
3698
3699 mutex_lock(&mvm->mutex);
3700 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3701
3702 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3703 true);
3704 if (ret) {
3705 IWL_ERR(mvm,
3706 "failed to assign new_ctx during channel switch\n");
3707 goto out_reassign;
3708 }
3709
3710 goto out;
3711
3712 out_reassign:
3713 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3714 true)) {
3715 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3716 goto out_restart;
3717 }
3718
3719 goto out;
3720
3721 out_restart:
3722 /* things keep failing, better restart the hw */
3723 iwl_mvm_nic_restart(mvm, false);
3724
3725 out:
3726 mutex_unlock(&mvm->mutex);
3727
3728 return ret;
3729 }
3730
3731 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3732 struct ieee80211_vif_chanctx_switch *vifs,
3733 int n_vifs,
3734 enum ieee80211_chanctx_switch_mode mode)
3735 {
3736 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3737 int ret;
3738
3739 /* we only support a single-vif right now */
3740 if (n_vifs > 1)
3741 return -EOPNOTSUPP;
3742
3743 switch (mode) {
3744 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3745 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3746 break;
3747 case CHANCTX_SWMODE_REASSIGN_VIF:
3748 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3749 break;
3750 default:
3751 ret = -EOPNOTSUPP;
3752 break;
3753 }
3754
3755 return ret;
3756 }
3757
3758 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
3759 {
3760 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3761
3762 return mvm->ibss_manager;
3763 }
3764
3765 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3766 struct ieee80211_sta *sta,
3767 bool set)
3768 {
3769 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3770 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3771
3772 if (!mvm_sta || !mvm_sta->vif) {
3773 IWL_ERR(mvm, "Station is not associated to a vif\n");
3774 return -EINVAL;
3775 }
3776
3777 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3778 }
3779
3780 #ifdef CONFIG_NL80211_TESTMODE
3781 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3782 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3783 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3784 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3785 };
3786
3787 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3788 struct ieee80211_vif *vif,
3789 void *data, int len)
3790 {
3791 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3792 int err;
3793 u32 noa_duration;
3794
3795 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
3796 NULL);
3797 if (err)
3798 return err;
3799
3800 if (!tb[IWL_MVM_TM_ATTR_CMD])
3801 return -EINVAL;
3802
3803 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3804 case IWL_MVM_TM_CMD_SET_NOA:
3805 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3806 !vif->bss_conf.enable_beacon ||
3807 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3808 return -EINVAL;
3809
3810 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3811 if (noa_duration >= vif->bss_conf.beacon_int)
3812 return -EINVAL;
3813
3814 mvm->noa_duration = noa_duration;
3815 mvm->noa_vif = vif;
3816
3817 return iwl_mvm_update_quotas(mvm, false, NULL);
3818 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3819 /* must be associated client vif - ignore authorized */
3820 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3821 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3822 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3823 return -EINVAL;
3824
3825 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3826 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3827 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3828 }
3829
3830 return -EOPNOTSUPP;
3831 }
3832
3833 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3834 struct ieee80211_vif *vif,
3835 void *data, int len)
3836 {
3837 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3838 int err;
3839
3840 mutex_lock(&mvm->mutex);
3841 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3842 mutex_unlock(&mvm->mutex);
3843
3844 return err;
3845 }
3846 #endif
3847
3848 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3849 struct ieee80211_vif *vif,
3850 struct ieee80211_channel_switch *chsw)
3851 {
3852 /* By implementing this operation, we prevent mac80211 from
3853 * starting its own channel switch timer, so that we can call
3854 * ieee80211_chswitch_done() ourselves at the right time
3855 * (which is when the absence time event starts).
3856 */
3857
3858 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3859 "dummy channel switch op\n");
3860 }
3861
3862 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3863 struct ieee80211_vif *vif,
3864 struct ieee80211_channel_switch *chsw)
3865 {
3866 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3867 struct ieee80211_vif *csa_vif;
3868 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3869 u32 apply_time;
3870 int ret;
3871
3872 mutex_lock(&mvm->mutex);
3873
3874 mvmvif->csa_failed = false;
3875
3876 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3877 chsw->chandef.center_freq1);
3878
3879 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3880
3881 switch (vif->type) {
3882 case NL80211_IFTYPE_AP:
3883 csa_vif =
3884 rcu_dereference_protected(mvm->csa_vif,
3885 lockdep_is_held(&mvm->mutex));
3886 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3887 "Another CSA is already in progress")) {
3888 ret = -EBUSY;
3889 goto out_unlock;
3890 }
3891
3892 /* we still didn't unblock tx. prevent new CS meanwhile */
3893 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
3894 lockdep_is_held(&mvm->mutex))) {
3895 ret = -EBUSY;
3896 goto out_unlock;
3897 }
3898
3899 rcu_assign_pointer(mvm->csa_vif, vif);
3900
3901 if (WARN_ONCE(mvmvif->csa_countdown,
3902 "Previous CSA countdown didn't complete")) {
3903 ret = -EBUSY;
3904 goto out_unlock;
3905 }
3906
3907 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
3908
3909 break;
3910 case NL80211_IFTYPE_STATION:
3911 if (mvmvif->lqm_active)
3912 iwl_mvm_send_lqm_cmd(vif,
3913 LQM_CMD_OPERATION_STOP_MEASUREMENT,
3914 0, 0);
3915
3916 /* Schedule the time event to a bit before beacon 1,
3917 * to make sure we're in the new channel when the
3918 * GO/AP arrives.
3919 */
3920 apply_time = chsw->device_timestamp +
3921 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3922 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3923
3924 if (chsw->block_tx)
3925 iwl_mvm_csa_client_absent(mvm, vif);
3926
3927 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3928 apply_time);
3929 if (mvmvif->bf_data.bf_enabled) {
3930 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3931 if (ret)
3932 goto out_unlock;
3933 }
3934
3935 break;
3936 default:
3937 break;
3938 }
3939
3940 mvmvif->ps_disabled = true;
3941
3942 ret = iwl_mvm_power_update_ps(mvm);
3943 if (ret)
3944 goto out_unlock;
3945
3946 /* we won't be on this channel any longer */
3947 iwl_mvm_teardown_tdls_peers(mvm);
3948
3949 out_unlock:
3950 mutex_unlock(&mvm->mutex);
3951
3952 return ret;
3953 }
3954
3955 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3956 struct ieee80211_vif *vif)
3957 {
3958 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3959 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3960 int ret;
3961
3962 mutex_lock(&mvm->mutex);
3963
3964 if (mvmvif->csa_failed) {
3965 mvmvif->csa_failed = false;
3966 ret = -EIO;
3967 goto out_unlock;
3968 }
3969
3970 if (vif->type == NL80211_IFTYPE_STATION) {
3971 struct iwl_mvm_sta *mvmsta;
3972
3973 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3974 mvmvif->ap_sta_id);
3975
3976 if (WARN_ON(!mvmsta)) {
3977 ret = -EIO;
3978 goto out_unlock;
3979 }
3980
3981 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3982
3983 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3984
3985 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3986 if (ret)
3987 goto out_unlock;
3988
3989 iwl_mvm_stop_session_protection(mvm, vif);
3990 }
3991
3992 mvmvif->ps_disabled = false;
3993
3994 ret = iwl_mvm_power_update_ps(mvm);
3995
3996 out_unlock:
3997 mutex_unlock(&mvm->mutex);
3998
3999 return ret;
4000 }
4001
4002 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
4003 struct ieee80211_vif *vif, u32 queues, bool drop)
4004 {
4005 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4006 struct iwl_mvm_vif *mvmvif;
4007 struct iwl_mvm_sta *mvmsta;
4008 struct ieee80211_sta *sta;
4009 int i;
4010 u32 msk = 0;
4011
4012 if (!vif || vif->type != NL80211_IFTYPE_STATION)
4013 return;
4014
4015 /* Make sure we're done with the deferred traffic before flushing */
4016 if (iwl_mvm_is_dqa_supported(mvm))
4017 flush_work(&mvm->add_stream_wk);
4018
4019 mutex_lock(&mvm->mutex);
4020 mvmvif = iwl_mvm_vif_from_mac80211(vif);
4021
4022 /* flush the AP-station and all TDLS peers */
4023 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4024 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4025 lockdep_is_held(&mvm->mutex));
4026 if (IS_ERR_OR_NULL(sta))
4027 continue;
4028
4029 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4030 if (mvmsta->vif != vif)
4031 continue;
4032
4033 /* make sure only TDLS peers or the AP are flushed */
4034 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4035
4036 if (drop) {
4037 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
4038 IWL_ERR(mvm, "flush request fail\n");
4039 } else {
4040 msk |= mvmsta->tfd_queue_msk;
4041 if (iwl_mvm_has_new_tx_api(mvm))
4042 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4043 }
4044 }
4045
4046 mutex_unlock(&mvm->mutex);
4047
4048 /* this can take a while, and we may need/want other operations
4049 * to succeed while doing this, so do it without the mutex held
4050 */
4051 if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4052 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4053 }
4054
4055 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4056 struct survey_info *survey)
4057 {
4058 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4059 int ret;
4060
4061 memset(survey, 0, sizeof(*survey));
4062
4063 /* only support global statistics right now */
4064 if (idx != 0)
4065 return -ENOENT;
4066
4067 if (!fw_has_capa(&mvm->fw->ucode_capa,
4068 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4069 return -ENOENT;
4070
4071 mutex_lock(&mvm->mutex);
4072
4073 if (iwl_mvm_firmware_running(mvm)) {
4074 ret = iwl_mvm_request_statistics(mvm, false);
4075 if (ret)
4076 goto out;
4077 }
4078
4079 survey->filled = SURVEY_INFO_TIME |
4080 SURVEY_INFO_TIME_RX |
4081 SURVEY_INFO_TIME_TX |
4082 SURVEY_INFO_TIME_SCAN;
4083 survey->time = mvm->accu_radio_stats.on_time_rf +
4084 mvm->radio_stats.on_time_rf;
4085 do_div(survey->time, USEC_PER_MSEC);
4086
4087 survey->time_rx = mvm->accu_radio_stats.rx_time +
4088 mvm->radio_stats.rx_time;
4089 do_div(survey->time_rx, USEC_PER_MSEC);
4090
4091 survey->time_tx = mvm->accu_radio_stats.tx_time +
4092 mvm->radio_stats.tx_time;
4093 do_div(survey->time_tx, USEC_PER_MSEC);
4094
4095 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4096 mvm->radio_stats.on_time_scan;
4097 do_div(survey->time_scan, USEC_PER_MSEC);
4098
4099 ret = 0;
4100 out:
4101 mutex_unlock(&mvm->mutex);
4102 return ret;
4103 }
4104
4105 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4106 struct ieee80211_vif *vif,
4107 struct ieee80211_sta *sta,
4108 struct station_info *sinfo)
4109 {
4110 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4111 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4112 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4113
4114 if (mvmsta->avg_energy) {
4115 sinfo->signal_avg = mvmsta->avg_energy;
4116 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
4117 }
4118
4119 if (!fw_has_capa(&mvm->fw->ucode_capa,
4120 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4121 return;
4122
4123 /* if beacon filtering isn't on mac80211 does it anyway */
4124 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4125 return;
4126
4127 if (!vif->bss_conf.assoc)
4128 return;
4129
4130 mutex_lock(&mvm->mutex);
4131
4132 if (mvmvif->ap_sta_id != mvmsta->sta_id)
4133 goto unlock;
4134
4135 if (iwl_mvm_request_statistics(mvm, false))
4136 goto unlock;
4137
4138 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4139 mvmvif->beacon_stats.accu_num_beacons;
4140 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
4141 if (mvmvif->beacon_stats.avg_signal) {
4142 /* firmware only reports a value after RXing a few beacons */
4143 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4144 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4145 }
4146 unlock:
4147 mutex_unlock(&mvm->mutex);
4148 }
4149
4150 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4151 struct ieee80211_vif *vif,
4152 const struct ieee80211_event *event)
4153 {
4154 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \
4155 do { \
4156 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \
4157 break; \
4158 iwl_mvm_fw_dbg_collect_trig(mvm, trig, _fmt); \
4159 } while (0)
4160
4161 struct iwl_fw_dbg_trigger_tlv *trig;
4162 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4163
4164 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4165 return;
4166
4167 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4168 trig_mlme = (void *)trig->data;
4169 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4170 return;
4171
4172 if (event->u.mlme.data == ASSOC_EVENT) {
4173 if (event->u.mlme.status == MLME_DENIED)
4174 CHECK_MLME_TRIGGER(stop_assoc_denied,
4175 "DENIED ASSOC: reason %d",
4176 event->u.mlme.reason);
4177 else if (event->u.mlme.status == MLME_TIMEOUT)
4178 CHECK_MLME_TRIGGER(stop_assoc_timeout,
4179 "ASSOC TIMEOUT");
4180 } else if (event->u.mlme.data == AUTH_EVENT) {
4181 if (event->u.mlme.status == MLME_DENIED)
4182 CHECK_MLME_TRIGGER(stop_auth_denied,
4183 "DENIED AUTH: reason %d",
4184 event->u.mlme.reason);
4185 else if (event->u.mlme.status == MLME_TIMEOUT)
4186 CHECK_MLME_TRIGGER(stop_auth_timeout,
4187 "AUTH TIMEOUT");
4188 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4189 CHECK_MLME_TRIGGER(stop_rx_deauth,
4190 "DEAUTH RX %d", event->u.mlme.reason);
4191 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4192 CHECK_MLME_TRIGGER(stop_tx_deauth,
4193 "DEAUTH TX %d", event->u.mlme.reason);
4194 }
4195 #undef CHECK_MLME_TRIGGER
4196 }
4197
4198 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4199 struct ieee80211_vif *vif,
4200 const struct ieee80211_event *event)
4201 {
4202 struct iwl_fw_dbg_trigger_tlv *trig;
4203 struct iwl_fw_dbg_trigger_ba *ba_trig;
4204
4205 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4206 return;
4207
4208 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4209 ba_trig = (void *)trig->data;
4210 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4211 return;
4212
4213 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4214 return;
4215
4216 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4217 "BAR received from %pM, tid %d, ssn %d",
4218 event->u.ba.sta->addr, event->u.ba.tid,
4219 event->u.ba.ssn);
4220 }
4221
4222 static void
4223 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4224 struct ieee80211_vif *vif,
4225 const struct ieee80211_event *event)
4226 {
4227 struct iwl_fw_dbg_trigger_tlv *trig;
4228 struct iwl_fw_dbg_trigger_ba *ba_trig;
4229
4230 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4231 return;
4232
4233 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4234 ba_trig = (void *)trig->data;
4235 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4236 return;
4237
4238 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4239 return;
4240
4241 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4242 "Frame from %pM timed out, tid %d",
4243 event->u.ba.sta->addr, event->u.ba.tid);
4244 }
4245
4246 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4247 struct ieee80211_vif *vif,
4248 const struct ieee80211_event *event)
4249 {
4250 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4251
4252 switch (event->type) {
4253 case MLME_EVENT:
4254 iwl_mvm_event_mlme_callback(mvm, vif, event);
4255 break;
4256 case BAR_RX_EVENT:
4257 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4258 break;
4259 case BA_FRAME_TIMEOUT:
4260 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4261 break;
4262 default:
4263 break;
4264 }
4265 }
4266
4267 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4268 struct iwl_mvm_internal_rxq_notif *notif,
4269 u32 size)
4270 {
4271 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4272 int ret;
4273
4274 lockdep_assert_held(&mvm->mutex);
4275
4276 /* TODO - remove a000 disablement when we have RXQ config API */
4277 if (!iwl_mvm_has_new_rx_api(mvm) || iwl_mvm_has_new_tx_api(mvm))
4278 return;
4279
4280 notif->cookie = mvm->queue_sync_cookie;
4281
4282 if (notif->sync)
4283 atomic_set(&mvm->queue_sync_counter,
4284 mvm->trans->num_rx_queues);
4285
4286 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4287 if (ret) {
4288 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4289 goto out;
4290 }
4291
4292 if (notif->sync) {
4293 ret = wait_event_timeout(mvm->rx_sync_waitq,
4294 atomic_read(&mvm->queue_sync_counter) == 0 ||
4295 iwl_mvm_is_radio_killed(mvm),
4296 HZ);
4297 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
4298 }
4299
4300 out:
4301 atomic_set(&mvm->queue_sync_counter, 0);
4302 mvm->queue_sync_cookie++;
4303 }
4304
4305 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4306 {
4307 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4308 struct iwl_mvm_internal_rxq_notif data = {
4309 .type = IWL_MVM_RXQ_EMPTY,
4310 .sync = 1,
4311 };
4312
4313 mutex_lock(&mvm->mutex);
4314 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4315 mutex_unlock(&mvm->mutex);
4316 }
4317
4318 const struct ieee80211_ops iwl_mvm_hw_ops = {
4319 .tx = iwl_mvm_mac_tx,
4320 .ampdu_action = iwl_mvm_mac_ampdu_action,
4321 .start = iwl_mvm_mac_start,
4322 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4323 .stop = iwl_mvm_mac_stop,
4324 .add_interface = iwl_mvm_mac_add_interface,
4325 .remove_interface = iwl_mvm_mac_remove_interface,
4326 .config = iwl_mvm_mac_config,
4327 .prepare_multicast = iwl_mvm_prepare_multicast,
4328 .configure_filter = iwl_mvm_configure_filter,
4329 .config_iface_filter = iwl_mvm_config_iface_filter,
4330 .bss_info_changed = iwl_mvm_bss_info_changed,
4331 .hw_scan = iwl_mvm_mac_hw_scan,
4332 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4333 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4334 .sta_state = iwl_mvm_mac_sta_state,
4335 .sta_notify = iwl_mvm_mac_sta_notify,
4336 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4337 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4338 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4339 .sta_rc_update = iwl_mvm_sta_rc_update,
4340 .conf_tx = iwl_mvm_mac_conf_tx,
4341 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4342 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4343 .flush = iwl_mvm_mac_flush,
4344 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4345 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4346 .set_key = iwl_mvm_mac_set_key,
4347 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4348 .remain_on_channel = iwl_mvm_roc,
4349 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4350 .add_chanctx = iwl_mvm_add_chanctx,
4351 .remove_chanctx = iwl_mvm_remove_chanctx,
4352 .change_chanctx = iwl_mvm_change_chanctx,
4353 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4354 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4355 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4356
4357 .start_ap = iwl_mvm_start_ap_ibss,
4358 .stop_ap = iwl_mvm_stop_ap_ibss,
4359 .join_ibss = iwl_mvm_start_ap_ibss,
4360 .leave_ibss = iwl_mvm_stop_ap_ibss,
4361
4362 .tx_last_beacon = iwl_mvm_tx_last_beacon,
4363
4364 .set_tim = iwl_mvm_set_tim,
4365
4366 .channel_switch = iwl_mvm_channel_switch,
4367 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4368 .post_channel_switch = iwl_mvm_post_channel_switch,
4369
4370 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4371 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4372 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4373
4374 .event_callback = iwl_mvm_mac_event_callback,
4375
4376 .sync_rx_queues = iwl_mvm_sync_rx_queues,
4377
4378 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4379
4380 #ifdef CONFIG_PM_SLEEP
4381 /* look at d3.c */
4382 .suspend = iwl_mvm_suspend,
4383 .resume = iwl_mvm_resume,
4384 .set_wakeup = iwl_mvm_set_wakeup,
4385 .set_rekey_data = iwl_mvm_set_rekey_data,
4386 #if IS_ENABLED(CONFIG_IPV6)
4387 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4388 #endif
4389 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4390 #endif
4391 .get_survey = iwl_mvm_mac_get_survey,
4392 .sta_statistics = iwl_mvm_mac_sta_statistics,
4393 };
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