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Merge tag 'iwlwifi-for-kalle-2015-12-16' into next
[linux-block.git] / drivers / net / wireless / intel / iwlwifi / mvm / mac80211.c
CommitLineData
8ca151b5
JB		 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 *
51368bf7 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5
JB		 10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
410dc5aa 26 * in the file called COPYING.
8ca151b5
JB		 27 *
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
51368bf7 34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc 35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5
JB		 36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65#include <linux/kernel.h>
66#include <linux/slab.h>
67#include <linux/skbuff.h>
68#include <linux/netdevice.h>
69#include <linux/etherdevice.h>
f0c2646a 70#include <linux/ip.h>
2ee8f021 71#include <linux/if_arp.h>
aadede6e 72#include <linux/devcoredump.h>
2f89a5d7 73#include <linux/time.h>
8ca151b5 74#include <net/mac80211.h>
7b1dd048 75#include <net/ieee80211_radiotap.h>
f0c2646a 76#include <net/tcp.h>
8ca151b5
JB		 77
78#include "iwl-op-mode.h"
79#include "iwl-io.h"
80#include "mvm.h"
81#include "sta.h"
82#include "time-event.h"
83#include "iwl-eeprom-parse.h"
8ca151b5 84#include "iwl-phy-db.h"
507cadf2 85#include "testmode.h"
655e6d6d
EG		 86#include "iwl-fw-error-dump.h"
87#include "iwl-prph.h"
363039be 88#include "iwl-csr.h"
88931cc9 89#include "iwl-nvm-parse.h"
2f89a5d7 90#include "fw-dbg.h"
8ca151b5
JB		 91
92static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
93 {
94 .max = 1,
8eb38710 95 .types = BIT(NL80211_IFTYPE_STATION),
8ca151b5 96 },
3c15a0fb
JB		 97 {
98 .max = 1,
8eb38710
IP		 99 .types = BIT(NL80211_IFTYPE_AP) |
100 BIT(NL80211_IFTYPE_P2P_CLIENT) |
3c15a0fb
JB		 101 BIT(NL80211_IFTYPE_P2P_GO),
102 },
103 {
104 .max = 1,
105 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
106 },
8ca151b5
JB		 107};
108
109static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
110 {
2624a5ca 111 .num_different_channels = 2,
8ca151b5
JB		 112 .max_interfaces = 3,
113 .limits = iwl_mvm_limits,
114 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
115 },
116};
117
f0c2646a
JB		 118#ifdef CONFIG_PM_SLEEP
119static const struct nl80211_wowlan_tcp_data_token_feature
120iwl_mvm_wowlan_tcp_token_feature = {
121 .min_len = 0,
122 .max_len = 255,
123 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
124};
125
126static 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
77736923 141#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
2ee8f021
EP		 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 */
153enum {
154 BC_FILTER_MAGIC_NONE = 0,
155 BC_FILTER_MAGIC_IP,
156 BC_FILTER_MAGIC_MAC,
157};
158
77736923
EP		 159static 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 },
2ee8f021
EP		 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 },
77736923
EP		 207 },
208 },
209 /* last filter must be empty */
210 {},
211};
212#endif
213
7498cf4c
EP		 214void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
215{
7bb426ea 216 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 217 return;
218
219 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
576eeee9
EP		 220 spin_lock_bh(&mvm->refs_lock);
221 mvm->refs[ref_type]++;
222 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 223 iwl_trans_ref(mvm->trans);
224}
225
226void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
227{
7bb426ea 228 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 229 return;
230
231 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
576eeee9
EP		 232 spin_lock_bh(&mvm->refs_lock);
233 WARN_ON(!mvm->refs[ref_type]--);
234 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 235 iwl_trans_unref(mvm->trans);
236}
237
576eeee9
EP		 238static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
239 enum iwl_mvm_ref_type except_ref)
7498cf4c 240{
576eeee9 241 int i, j;
7498cf4c 242
7bb426ea 243 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 244 return;
245
576eeee9
EP		 246 spin_lock_bh(&mvm->refs_lock);
247 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
248 if (except_ref == i || !mvm->refs[i])
7498cf4c
EP		 249 continue;
250
576eeee9
EP		 251 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
252 i, mvm->refs[i]);
253 for (j = 0; j < mvm->refs[i]; j++)
254 iwl_trans_unref(mvm->trans);
255 mvm->refs[i] = 0;
7498cf4c 256 }
576eeee9 257 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 258}
259
f4cf8680
EP		 260bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
261{
262 int i;
263 bool taken = false;
264
265 if (!iwl_mvm_is_d0i3_supported(mvm))
266 return true;
267
268 spin_lock_bh(&mvm->refs_lock);
269 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
270 if (mvm->refs[i]) {
271 taken = true;
272 break;
273 }
274 }
275 spin_unlock_bh(&mvm->refs_lock);
276
277 return taken;
278}
279
576eeee9 280int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
d40fc489
GG		 281{
282 iwl_mvm_ref(mvm, ref_type);
283
284 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
285 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
286 HZ)) {
287 WARN_ON_ONCE(1);
288 iwl_mvm_unref(mvm, ref_type);
289 return -EIO;
290 }
291
292 return 0;
293}
294
fe0f2de3
IP		 295static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
296{
297 int i;
298
299 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
300 for (i = 0; i < NUM_PHY_CTX; i++) {
301 mvm->phy_ctxts[i].id = i;
302 mvm->phy_ctxts[i].ref = 0;
303 }
304}
305
88931cc9 306struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
8ba2d7a1 307 const char *alpha2,
47c8b154
JD		 308 enum iwl_mcc_source src_id,
309 bool *changed)
88931cc9
AN		 310{
311 struct ieee80211_regdomain *regd = NULL;
312 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
313 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
314 struct iwl_mcc_update_resp *resp;
315
316 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
317
8ba2d7a1 318 lockdep_assert_held(&mvm->mutex);
88931cc9 319
8ba2d7a1 320 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
88931cc9
AN		 321 if (IS_ERR_OR_NULL(resp)) {
322 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
b8c474d9 323 PTR_ERR_OR_ZERO(resp));
8ba2d7a1 324 goto out;
88931cc9
AN		 325 }
326
47c8b154
JD		 327 if (changed)
328 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
329
162ee3c9 330 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
88931cc9
AN		 331 __le32_to_cpu(resp->n_channels),
332 resp->channels,
333 __le16_to_cpu(resp->mcc));
8ba2d7a1
EH		 334 /* Store the return source id */
335 src_id = resp->source_id;
88931cc9
AN		 336 kfree(resp);
337 if (IS_ERR_OR_NULL(regd)) {
338 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
b8c474d9 339 PTR_ERR_OR_ZERO(regd));
8ba2d7a1 340 goto out;
88931cc9
AN		 341 }
342
8ba2d7a1
EH		 343 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
344 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
88931cc9 345 mvm->lar_regdom_set = true;
8ba2d7a1 346 mvm->mcc_src = src_id;
88931cc9 347
8ba2d7a1 348out:
88931cc9
AN		 349 return regd;
350}
351
47c8b154
JD		 352void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
353{
354 bool changed;
355 struct ieee80211_regdomain *regd;
356
357 if (!iwl_mvm_is_lar_supported(mvm))
358 return;
359
360 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
361 if (!IS_ERR_OR_NULL(regd)) {
362 /* only update the regulatory core if changed */
363 if (changed)
364 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
365
366 kfree(regd);
367 }
368}
369
370struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
371 bool *changed)
8ba2d7a1
EH		 372{
373 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
374 iwl_mvm_is_wifi_mcc_supported(mvm) ?
375 MCC_SOURCE_GET_CURRENT :
47c8b154 376 MCC_SOURCE_OLD_FW, changed);
8ba2d7a1
EH		 377}
378
379int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
380{
381 enum iwl_mcc_source used_src;
382 struct ieee80211_regdomain *regd;
b6e160ab
AN		 383 int ret;
384 bool changed;
8ba2d7a1
EH		 385 const struct ieee80211_regdomain *r =
386 rtnl_dereference(mvm->hw->wiphy->regd);
387
388 if (!r)
b6e160ab 389 return -ENOENT;
8ba2d7a1
EH		 390
391 /* save the last source in case we overwrite it below */
392 used_src = mvm->mcc_src;
393 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
394 /* Notify the firmware we support wifi location updates */
47c8b154 395 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
8ba2d7a1
EH		 396 if (!IS_ERR_OR_NULL(regd))
397 kfree(regd);
398 }
399
400 /* Now set our last stored MCC and source */
b6e160ab
AN		 401 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
402 &changed);
8ba2d7a1
EH		 403 if (IS_ERR_OR_NULL(regd))
404 return -EIO;
405
b6e160ab
AN		 406 /* update cfg80211 if the regdomain was changed */
407 if (changed)
408 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
409 else
410 ret = 0;
8ba2d7a1 411
b6e160ab
AN		 412 kfree(regd);
413 return ret;
8ba2d7a1
EH		 414}
415
8ca151b5
JB		 416int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
417{
418 struct ieee80211_hw *hw = mvm->hw;
831e85f3 419 int num_mac, ret, i;
5f4c02e2
JB		 420 static const u32 mvm_ciphers[] = {
421 WLAN_CIPHER_SUITE_WEP40,
422 WLAN_CIPHER_SUITE_WEP104,
423 WLAN_CIPHER_SUITE_TKIP,
424 WLAN_CIPHER_SUITE_CCMP,
425 };
8ca151b5
JB		 426
427 /* Tell mac80211 our characteristics */
30686bf7
JB		 428 ieee80211_hw_set(hw, SIGNAL_DBM);
429 ieee80211_hw_set(hw, SPECTRUM_MGMT);
430 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
431 ieee80211_hw_set(hw, QUEUE_CONTROL);
432 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
433 ieee80211_hw_set(hw, SUPPORTS_PS);
434 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
435 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
436 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
437 ieee80211_hw_set(hw, CONNECTION_MONITOR);
438 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
439 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
440 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
8ca151b5 441
2d7cf549
JB		 442 if (mvm->trans->max_skb_frags)
443 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
444
19e737c9 445 hw->queues = mvm->first_agg_queue;
398e8c6c 446 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
7b1dd048
EG		 447 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
448 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
339b3086
ES		 449 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
450 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
8ca151b5 451 hw->rate_control_algorithm = "iwl-mvm-rs";
848955cc
JB		 452 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
453 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
8ca151b5 454
5f4c02e2
JB		 455 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2);
456 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
457 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
458 hw->wiphy->cipher_suites = mvm->ciphers;
459
8ca151b5
JB		 460 /*
461 * Enable 11w if advertised by firmware and software crypto
462 * is not enabled (as the firmware will interpret some mgmt
463 * packets, so enabling it with software crypto isn't safe)
464 */
465 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
5f4c02e2 466 !iwlwifi_mod_params.sw_crypto) {
30686bf7 467 ieee80211_hw_set(hw, MFP_CAPABLE);
5f4c02e2
JB		 468 mvm->ciphers[hw->wiphy->n_cipher_suites] =
469 WLAN_CIPHER_SUITE_AES_CMAC;
470 hw->wiphy->n_cipher_suites++;
471 }
472
473 /* currently FW API supports only one optional cipher scheme */
474 if (mvm->fw->cs[0].cipher) {
475 mvm->hw->n_cipher_schemes = 1;
476 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
477 mvm->ciphers[hw->wiphy->n_cipher_suites] =
478 mvm->fw->cs[0].cipher;
479 hw->wiphy->n_cipher_suites++;
480 }
8ca151b5 481
30686bf7 482 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
1f940386
LC		 483 hw->wiphy->features |=
484 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
3db93420
JB		 485 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
486 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
fb98be5e 487
8ca151b5
JB		 488 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
489 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
fe0f2de3 490 hw->chanctx_data_size = sizeof(u16);
8ca151b5
JB		 491
492 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3c15a0fb
JB		 493 BIT(NL80211_IFTYPE_P2P_CLIENT) |
494 BIT(NL80211_IFTYPE_AP) |
495 BIT(NL80211_IFTYPE_P2P_GO) |
c13b1725
EG		 496 BIT(NL80211_IFTYPE_P2P_DEVICE) |
497 BIT(NL80211_IFTYPE_ADHOC);
5023d966 498
a2f73b6c 499 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
8ba2d7a1
EH		 500 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
501 if (iwl_mvm_is_lar_supported(mvm))
502 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
503 else
504 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
505 REGULATORY_DISABLE_BEACON_HINTS;
8ca151b5 506
3e56eadf
JB		 507 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
508 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
509
94bbed72 510 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
bd3398e2 511
8ca151b5
JB		 512 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
513 hw->wiphy->n_iface_combinations =
514 ARRAY_SIZE(iwl_mvm_iface_combinations);
515
c451e6d4 516 hw->wiphy->max_remain_on_channel_duration = 10000;
8ca151b5 517 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
f1a68542
EG		 518 /* we can compensate an offset of up to 3 channels = 15 MHz */
519 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
8ca151b5
JB		 520
521 /* Extract MAC address */
522 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
523 hw->wiphy->addresses = mvm->addresses;
524 hw->wiphy->n_addresses = 1;
831e85f3
IP		 525
526 /* Extract additional MAC addresses if available */
527 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
528 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
529
530 for (i = 1; i < num_mac; i++) {
531 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
8ca151b5 532 ETH_ALEN);
831e85f3 533 mvm->addresses[i].addr[5]++;
8ca151b5
JB		 534 hw->wiphy->n_addresses++;
535 }
536
fe0f2de3
IP		 537 iwl_mvm_reset_phy_ctxts(mvm);
538
999d2568 539 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
20f1a5de 540
8ca151b5
JB		 541 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
542
c7d42480 543 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
507e4cda
LC		 544 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
545 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
546
859d914c 547 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
507e4cda
LC		 548 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
549 else
550 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
551
8ca151b5
JB		 552 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
553 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
554 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
3d44eebf 555 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
8ca151b5
JB		 556 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
557 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
558
859d914c
JB		 559 if (fw_has_capa(&mvm->fw->ucode_capa,
560 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
561 fw_has_api(&mvm->fw->ucode_capa,
562 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
3d44eebf
ES		 563 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
564 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
565 }
566
8ca151b5
JB		 567 hw->wiphy->hw_version = mvm->trans->hw_id;
568
ade50652 569 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
8ca151b5
JB		 570 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
571 else
572 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
573
9954b37c
EG		 574 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
575 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
576 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
577 /* we create the 802.11 header and zero length SSID IE. */
578 hw->wiphy->max_sched_scan_ie_len =
579 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
cd55ccea
AS		 580 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
581 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
582
583 /*
584 * the firmware uses u8 for num of iterations, but 0xff is saved for
585 * infinite loop, so the maximum number of iterations is actually 254.
586 */
587 hw->wiphy->max_sched_scan_plan_iterations = 254;
35a000b7 588
8ca151b5 589 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
ab480030 590 NL80211_FEATURE_LOW_PRIORITY_SCAN |
0d8614b4
EP		 591 NL80211_FEATURE_P2P_GO_OPPPS |
592 NL80211_FEATURE_DYNAMIC_SMPS |
9b5452fd
EG		 593 NL80211_FEATURE_STATIC_SMPS |
594 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
8ca151b5 595
859d914c
JB		 596 if (fw_has_capa(&mvm->fw->ucode_capa,
597 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
f1daa00e 598 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
859d914c
JB		 599 if (fw_has_capa(&mvm->fw->ucode_capa,
600 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
226bcd48 601 hw->wiphy->features |= NL80211_FEATURE_QUIET;
f1daa00e 602
859d914c
JB		 603 if (fw_has_capa(&mvm->fw->ucode_capa,
604 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
73897bd1
AO		 605 hw->wiphy->features |=
606 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
607
859d914c
JB		 608 if (fw_has_capa(&mvm->fw->ucode_capa,
609 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
73897bd1
AO		 610 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
611
8ca151b5
JB		 612 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
613
614#ifdef CONFIG_PM_SLEEP
d15a747f
EP		 615 if (iwl_mvm_is_d0i3_supported(mvm) &&
616 device_can_wakeup(mvm->trans->dev)) {
617 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
618 hw->wiphy->wowlan = &mvm->wowlan;
91742449
EP		 619 }
620
621 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
8ca151b5
JB		 622 mvm->trans->ops->d3_suspend &&
623 mvm->trans->ops->d3_resume &&
624 device_can_wakeup(mvm->trans->dev)) {
91742449
EP		 625 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
626 WIPHY_WOWLAN_DISCONNECT |
627 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
628 WIPHY_WOWLAN_RFKILL_RELEASE |
629 WIPHY_WOWLAN_NET_DETECT;
8ca151b5 630 if (!iwlwifi_mod_params.sw_crypto)
964dc9e2
JB		 631 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
632 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
633 WIPHY_WOWLAN_4WAY_HANDSHAKE;
634
635 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
636 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
637 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
c55385f5 638 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
964dc9e2
JB		 639 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
640 hw->wiphy->wowlan = &mvm->wowlan;
8ca151b5
JB		 641 }
642#endif
643
77736923
EP		 644#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
645 /* assign default bcast filtering configuration */
646 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
647#endif
648
8ca151b5
JB		 649 ret = iwl_mvm_leds_init(mvm);
650 if (ret)
651 return ret;
652
859d914c
JB		 653 if (fw_has_capa(&mvm->fw->ucode_capa,
654 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
d8f1c515
AN		 655 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
656 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
7c4f0843 657 ieee80211_hw_set(hw, TDLS_WIDER_BW);
d8f1c515
AN		 658 }
659
859d914c
JB		 660 if (fw_has_capa(&mvm->fw->ucode_capa,
661 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
1d3c3f63
AN		 662 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
663 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
664 }
665
93190fb0
AA		 666 hw->netdev_features |= mvm->cfg->features;
667 if (!iwl_mvm_is_csum_supported(mvm))
668 hw->netdev_features &= ~NETIF_F_RXCSUM;
669
b7327d89
EG		 670 ret = ieee80211_register_hw(mvm->hw);
671 if (ret)
672 iwl_mvm_leds_exit(mvm);
673
674 return ret;
8ca151b5
JB		 675}
676
b2492501
AN		 677static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
678 struct ieee80211_sta *sta,
679 struct sk_buff *skb)
680{
681 struct iwl_mvm_sta *mvmsta;
682 bool defer = false;
683
684 /*
685 * double check the IN_D0I3 flag both before and after
686 * taking the spinlock, in order to prevent taking
687 * the spinlock when not needed.
688 */
689 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
690 return false;
691
692 spin_lock(&mvm->d0i3_tx_lock);
693 /*
694 * testing the flag again ensures the skb dequeue
695 * loop (on d0i3 exit) hasn't run yet.
696 */
697 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
698 goto out;
699
700 mvmsta = iwl_mvm_sta_from_mac80211(sta);
701 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
702 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
703 goto out;
704
705 __skb_queue_tail(&mvm->d0i3_tx, skb);
706 ieee80211_stop_queues(mvm->hw);
707
708 /* trigger wakeup */
709 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
710 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
711
712 defer = true;
713out:
714 spin_unlock(&mvm->d0i3_tx_lock);
715 return defer;
716}
717
8ca151b5
JB		 718static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
719 struct ieee80211_tx_control *control,
720 struct sk_buff *skb)
721{
722 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3e56eadf
JB		 723 struct ieee80211_sta *sta = control->sta;
724 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
725 struct ieee80211_hdr *hdr = (void *)skb->data;
8ca151b5 726
9ee718aa
EL		 727 if (iwl_mvm_is_radio_killed(mvm)) {
728 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
8ca151b5
JB		 729 goto drop;
730 }
731
398e8c6c 732 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
a6cc5163
MG		 733 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
734 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
8ca151b5
JB		 735 goto drop;
736
3e56eadf
JB		 737 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
738 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
739 ieee80211_is_mgmt(hdr->frame_control) &&
740 !ieee80211_is_deauth(hdr->frame_control) &&
741 !ieee80211_is_disassoc(hdr->frame_control) &&
742 !ieee80211_is_action(hdr->frame_control)))
743 sta = NULL;
744
745 if (sta) {
b2492501
AN		 746 if (iwl_mvm_defer_tx(mvm, sta, skb))
747 return;
3e56eadf 748 if (iwl_mvm_tx_skb(mvm, skb, sta))
8ca151b5
JB		 749 goto drop;
750 return;
751 }
752
753 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
754 goto drop;
755 return;
756 drop:
757 ieee80211_free_txskb(hw, skb);
758}
759
205e2210
EG		 760static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
761{
762 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
763 return false;
764 return true;
765}
766
767static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
768{
769 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
770 return false;
771 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
772 return true;
773
774 /* enabled by default */
775 return true;
776}
777
4203263d
EG		 778#define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
779 do { \
780 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
781 break; \
782 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
783 } while (0)
784
785static void
786iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
787 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
788 enum ieee80211_ampdu_mlme_action action)
789{
790 struct iwl_fw_dbg_trigger_tlv *trig;
791 struct iwl_fw_dbg_trigger_ba *ba_trig;
792
793 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
794 return;
795
796 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
797 ba_trig = (void *)trig->data;
798
799 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
800 return;
801
802 switch (action) {
803 case IEEE80211_AMPDU_TX_OPERATIONAL: {
804 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
805 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
806
807 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
808 "TX AGG START: MAC %pM tid %d ssn %d\n",
809 sta->addr, tid, tid_data->ssn);
810 break;
811 }
812 case IEEE80211_AMPDU_TX_STOP_CONT:
813 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
814 "TX AGG STOP: MAC %pM tid %d\n",
815 sta->addr, tid);
816 break;
817 case IEEE80211_AMPDU_RX_START:
818 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
819 "RX AGG START: MAC %pM tid %d ssn %d\n",
820 sta->addr, tid, rx_ba_ssn);
821 break;
822 case IEEE80211_AMPDU_RX_STOP:
823 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
824 "RX AGG STOP: MAC %pM tid %d\n",
825 sta->addr, tid);
826 break;
827 default:
828 break;
829 }
830}
831
8ca151b5
JB		 832static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
833 struct ieee80211_vif *vif,
834 enum ieee80211_ampdu_mlme_action action,
835 struct ieee80211_sta *sta, u16 tid,
e3abc8ff 836 u16 *ssn, u8 buf_size, bool amsdu)
8ca151b5
JB		 837{
838 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
839 int ret;
b2492501 840 bool tx_agg_ref = false;
8ca151b5
JB		 841
842 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
843 sta->addr, tid, action);
844
845 if (!(mvm->nvm_data->sku_cap_11n_enable))
846 return -EACCES;
847
b2492501 848 /* return from D0i3 before starting a new Tx aggregation */
9256c205
EP		 849 switch (action) {
850 case IEEE80211_AMPDU_TX_START:
851 case IEEE80211_AMPDU_TX_STOP_CONT:
852 case IEEE80211_AMPDU_TX_STOP_FLUSH:
853 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
854 case IEEE80211_AMPDU_TX_OPERATIONAL:
b2492501 855 /*
9256c205
EP		 856 * for tx start, wait synchronously until D0i3 exit to
857 * get the correct sequence number for the tid.
858 * additionally, some other ampdu actions use direct
859 * target access, which is not handled automatically
860 * by the trans layer (unlike commands), so wait for
861 * d0i3 exit in these cases as well.
b2492501 862 */
d40fc489
GG		 863 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
864 if (ret)
865 return ret;
866
867 tx_agg_ref = true;
9256c205
EP		 868 break;
869 default:
870 break;
b2492501
AN		 871 }
872
8ca151b5
JB		 873 mutex_lock(&mvm->mutex);
874
875 switch (action) {
876 case IEEE80211_AMPDU_RX_START:
205e2210 877 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
8ca151b5
JB		 878 ret = -EINVAL;
879 break;
880 }
881 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
882 break;
883 case IEEE80211_AMPDU_RX_STOP:
884 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
885 break;
886 case IEEE80211_AMPDU_TX_START:
205e2210 887 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
5d158efa
EG		 888 ret = -EINVAL;
889 break;
890 }
8ca151b5
JB		 891 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
892 break;
893 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 894 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
895 break;
8ca151b5
JB		 896 case IEEE80211_AMPDU_TX_STOP_FLUSH:
897 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 898 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 899 break;
900 case IEEE80211_AMPDU_TX_OPERATIONAL:
901 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
902 break;
903 default:
904 WARN_ON_ONCE(1);
905 ret = -EINVAL;
906 break;
907 }
4203263d
EG		 908
909 if (!ret) {
910 u16 rx_ba_ssn = 0;
911
912 if (action == IEEE80211_AMPDU_RX_START)
913 rx_ba_ssn = *ssn;
914
915 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
916 rx_ba_ssn, action);
917 }
8ca151b5
JB		 918 mutex_unlock(&mvm->mutex);
919
b2492501
AN		 920 /*
921 * If the tid is marked as started, we won't use it for offloaded
922 * traffic on the next D0i3 entry. It's safe to unref.
923 */
924 if (tx_agg_ref)
925 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
926
8ca151b5
JB		 927 return ret;
928}
929
930static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
931 struct ieee80211_vif *vif)
932{
933 struct iwl_mvm *mvm = data;
934 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
935
936 mvmvif->uploaded = false;
937 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
938
8ca151b5
JB		 939 spin_lock_bh(&mvm->time_event_lock);
940 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
941 spin_unlock_bh(&mvm->time_event_lock);
942
fe0f2de3 943 mvmvif->phy_ctxt = NULL;
8a275bad 944 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
8ca151b5
JB		 945}
946
947static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
948{
58629d9d
JB		 949 /* clear the D3 reconfig, we only need it to avoid dumping a
950 * firmware coredump on reconfiguration, we shouldn't do that
951 * on D3->D0 transition
952 */
b6eaa45a
EG		 953 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
954 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
58629d9d 955 iwl_mvm_fw_error_dump(mvm);
b6eaa45a 956 }
1bd3cbc1 957
744cb695
EP		 958 /* cleanup all stale references (scan, roc), but keep the
959 * ucode_down ref until reconfig is complete
960 */
961 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
962
8ca151b5 963 iwl_trans_stop_device(mvm->trans);
8ca151b5 964
9af91f46 965 mvm->scan_status = 0;
b1873300 966 mvm->ps_disabled = false;
31b8b343 967 mvm->calibrating = false;
8ca151b5
JB		 968
969 /* just in case one was running */
305d236e 970 iwl_mvm_cleanup_roc_te(mvm);
8ca151b5
JB		 971 ieee80211_remain_on_channel_expired(mvm->hw);
972
737719fe
AN		 973 /*
974 * cleanup all interfaces, even inactive ones, as some might have
975 * gone down during the HW restart
976 */
977 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
8ca151b5 978
fe0f2de3 979 mvm->p2p_device_vif = NULL;
37577fe2 980 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
fe0f2de3
IP		 981
982 iwl_mvm_reset_phy_ctxts(mvm);
8ca151b5 983 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
a0f6bf2a 984 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
8a275bad
EG		 985 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
986 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
987 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
988 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
989 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
990 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
8ca151b5
JB		 991
992 ieee80211_wake_queues(mvm->hw);
993
228670b2
EP		 994 /* clear any stale d0i3 state */
995 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
996
8ca151b5 997 mvm->vif_count = 0;
113a0447 998 mvm->rx_ba_sessions = 0;
d2709ad7 999 mvm->fw_dbg_conf = FW_DBG_INVALID;
355346ba 1000 mvm->scan_type = IWL_SCAN_TYPE_NOT_SET;
91a8bcde
JB		 1001
1002 /* keep statistics ticking */
1003 iwl_mvm_accu_radio_stats(mvm);
8ca151b5
JB		 1004}
1005
a0a09243 1006int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
8ca151b5 1007{
8ca151b5
JB		 1008 int ret;
1009
a0a09243 1010 lockdep_assert_held(&mvm->mutex);
8ca151b5 1011
a42b2af3
LC		 1012 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1013 /* Clean up some internal and mac80211 state on restart */
8ca151b5 1014 iwl_mvm_restart_cleanup(mvm);
a42b2af3
LC		 1015 } else {
1016 /* Hold the reference to prevent runtime suspend while
1017 * the start procedure runs. It's a bit confusing
1018 * that the UCODE_DOWN reference is taken, but it just
1019 * means "UCODE is not UP yet". ( TODO: rename this
1020 * reference).
1021 */
1022 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1023 }
8ca151b5 1024 ret = iwl_mvm_up(mvm);
c47af22a
JB		 1025
1026 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1027 /* Something went wrong - we need to finish some cleanup
1028 * that normally iwl_mvm_mac_restart_complete() below
1029 * would do.
1030 */
1031 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1032 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1033 }
1034
a0a09243
LC		 1035 return ret;
1036}
1037
1038static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1039{
1040 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1041 int ret;
1042
37948fcf
EP		 1043 /* Some hw restart cleanups must not hold the mutex */
1044 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1045 /*
1046 * Make sure we are out of d0i3. This is needed
1047 * to make sure the reference accounting is correct
1048 * (and there is no stale d0i3_exit_work).
1049 */
1050 wait_event_timeout(mvm->d0i3_exit_waitq,
1051 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1052 &mvm->status),
1053 HZ);
1054 }
1055
a0a09243
LC		 1056 mutex_lock(&mvm->mutex);
1057 ret = __iwl_mvm_mac_start(mvm);
8ca151b5
JB		 1058 mutex_unlock(&mvm->mutex);
1059
1060 return ret;
1061}
1062
cf2c92d8 1063static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
8ca151b5 1064{
8ca151b5
JB		 1065 int ret;
1066
1067 mutex_lock(&mvm->mutex);
1068
1069 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
b2492501 1070 iwl_mvm_d0i3_enable_tx(mvm, NULL);
e7afe89f 1071 ret = iwl_mvm_update_quotas(mvm, true, NULL);
8ca151b5
JB		 1072 if (ret)
1073 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1074 ret);
1075
7498cf4c
EP		 1076 /* allow transport/FW low power modes */
1077 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1078
cbd2ae2d
AN		 1079 /*
1080 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1081 * of packets the FW sent out, so we must reconnect.
1082 */
1083 iwl_mvm_teardown_tdls_peers(mvm);
1084
8ca151b5
JB		 1085 mutex_unlock(&mvm->mutex);
1086}
1087
088070a2
EP		 1088static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1089{
b7282643
LC		 1090 if (iwl_mvm_is_d0i3_supported(mvm) &&
1091 iwl_mvm_enter_d0i3_on_suspend(mvm))
1092 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1093 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1094 &mvm->status),
1095 HZ),
1096 "D0i3 exit on resume timed out\n");
088070a2
EP		 1097}
1098
cf2c92d8
EP		 1099static void
1100iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1101 enum ieee80211_reconfig_type reconfig_type)
1102{
1103 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1104
1105 switch (reconfig_type) {
1106 case IEEE80211_RECONFIG_TYPE_RESTART:
1107 iwl_mvm_restart_complete(mvm);
1108 break;
1109 case IEEE80211_RECONFIG_TYPE_SUSPEND:
088070a2 1110 iwl_mvm_resume_complete(mvm);
cf2c92d8
EP		 1111 break;
1112 }
1113}
1114
a0a09243 1115void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
8ca151b5 1116{
a0a09243 1117 lockdep_assert_held(&mvm->mutex);
7498cf4c 1118
91a8bcde
JB		 1119 /* firmware counters are obviously reset now, but we shouldn't
1120 * partially track so also clear the fw_reset_accu counters.
1121 */
1122 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1123
8ca151b5
JB		 1124 /* async_handlers_wk is now blocked */
1125
1126 /*
1127 * The work item could be running or queued if the
1128 * ROC time event stops just as we get here.
1129 */
c779273b 1130 flush_work(&mvm->roc_done_wk);
8ca151b5
JB		 1131
1132 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 1133
1134 iwl_mvm_async_handlers_purge(mvm);
1135 /* async_handlers_list is empty and will stay empty: HW is stopped */
1136
1137 /* the fw is stopped, the aux sta is dead: clean up driver state */
712b24ad 1138 iwl_mvm_del_aux_sta(mvm);
8ca151b5 1139
0a79a0c0
EP		 1140 /*
1141 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1142 * won't be called in this case).
8b2b9fbf
AN		 1143 * But make sure to cleanup interfaces that have gone down before/during
1144 * HW restart was requested.
0a79a0c0 1145 */
8b2b9fbf
AN		 1146 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1147 ieee80211_iterate_interfaces(mvm->hw, 0,
1148 iwl_mvm_cleanup_iterator, mvm);
0a79a0c0 1149
963221be
AB		 1150 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1151 * make sure there's nothing left there and warn if any is found.
1152 */
859d914c 1153 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
963221be
AB		 1154 int i;
1155
507e4cda 1156 for (i = 0; i < mvm->max_scans; i++) {
6185af2a
LC		 1157 if (WARN_ONCE(mvm->scan_uid_status[i],
1158 "UMAC scan UID %d status was not cleaned\n",
1159 i))
1160 mvm->scan_uid_status[i] = 0;
963221be
AB		 1161 }
1162 }
1163
bc44886d 1164 mvm->ucode_loaded = false;
a0a09243 1165}
bc44886d 1166
a0a09243
LC		 1167static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1168{
1169 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1170
1171 flush_work(&mvm->d0i3_exit_work);
1172 flush_work(&mvm->async_handlers_wk);
d2709ad7 1173 cancel_delayed_work_sync(&mvm->fw_dump_wk);
b6eaa45a 1174 iwl_mvm_free_fw_dump_desc(mvm);
a0a09243
LC		 1175
1176 mutex_lock(&mvm->mutex);
1177 __iwl_mvm_mac_stop(mvm);
8ca151b5
JB		 1178 mutex_unlock(&mvm->mutex);
1179
1180 /*
1181 * The worker might have been waiting for the mutex, let it run and
1182 * discover that its list is now empty.
1183 */
1184 cancel_work_sync(&mvm->async_handlers_wk);
1185}
1186
fe0f2de3
IP		 1187static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1188{
1189 u16 i;
1190
1191 lockdep_assert_held(&mvm->mutex);
1192
1193 for (i = 0; i < NUM_PHY_CTX; i++)
1194 if (!mvm->phy_ctxts[i].ref)
1195 return &mvm->phy_ctxts[i];
1196
1197 IWL_ERR(mvm, "No available PHY context\n");
1198 return NULL;
1199}
1200
d44c3fe6
AA		 1201static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1202 s16 tx_power)
1203{
1204 struct iwl_dev_tx_power_cmd cmd = {
da03f029
JB		 1205 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1206 .v2.mac_context_id =
d44c3fe6 1207 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
da03f029 1208 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
d44c3fe6 1209 };
da03f029 1210 int len = sizeof(cmd);
d44c3fe6 1211
d44c3fe6 1212 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
da03f029 1213 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
d44c3fe6 1214
da03f029
JB		 1215 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1216 len = sizeof(cmd.v2);
1217
1218 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
d44c3fe6
AA		 1219}
1220
8ca151b5
JB		 1221static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1222 struct ieee80211_vif *vif)
1223{
1224 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1225 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1226 int ret;
1227
aa5e1832
EG		 1228 mvmvif->mvm = mvm;
1229
d40fc489
GG		 1230 /*
1231 * make sure D0i3 exit is completed, otherwise a target access
1232 * during tx queue configuration could be done when still in
1233 * D0i3 state.
1234 */
1235 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1236 if (ret)
1237 return ret;
1238
8ca151b5
JB		 1239 /*
1240 * Not much to do here. The stack will not allow interface
1241 * types or combinations that we didn't advertise, so we
1242 * don't really have to check the types.
1243 */
1244
1245 mutex_lock(&mvm->mutex);
1246
33cef925
JB		 1247 /* make sure that beacon statistics don't go backwards with FW reset */
1248 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1249 mvmvif->beacon_stats.accu_num_beacons +=
1250 mvmvif->beacon_stats.num_beacons;
1251
e89044d7 1252 /* Allocate resources for the MAC context, and add it to the fw */
8ca151b5
JB		 1253 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1254 if (ret)
1255 goto out_unlock;
1256
1c2abf72 1257 /* Counting number of interfaces is needed for legacy PM */
ea183d02
IP		 1258 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1259 mvm->vif_count++;
ea183d02 1260
8ca151b5
JB		 1261 /*
1262 * The AP binding flow can be done only after the beacon
1263 * template is configured (which happens only in the mac80211
1264 * start_ap() flow), and adding the broadcast station can happen
1265 * only after the binding.
1266 * In addition, since modifying the MAC before adding a bcast
1267 * station is not allowed by the FW, delay the adding of MAC context to
1268 * the point where we can also add the bcast station.
1269 * In short: there's not much we can do at this point, other than
1270 * allocating resources :)
1271 */
5023d966
JB		 1272 if (vif->type == NL80211_IFTYPE_AP ||
1273 vif->type == NL80211_IFTYPE_ADHOC) {
013290aa 1274 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1275 if (ret) {
1276 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1277 goto out_release;
1278 }
1279
77740cb4 1280 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1281 goto out_unlock;
1282 }
1283
93190fb0
AA		 1284 mvmvif->features |= hw->netdev_features;
1285
8ca151b5
JB		 1286 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1287 if (ret)
1288 goto out_release;
1289
999609f1 1290 ret = iwl_mvm_power_update_mac(mvm);
e5e7aa8e 1291 if (ret)
fd66fc1c 1292 goto out_remove_mac;
8ca151b5 1293
7df15b1e 1294 /* beacon filtering */
a1022927 1295 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
bd3351ba
EP		 1296 if (ret)
1297 goto out_remove_mac;
1298
7df15b1e 1299 if (!mvm->bf_allowed_vif &&
73e5f2c5 1300 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
7df15b1e 1301 mvm->bf_allowed_vif = mvmvif;
a20fd398
AO		 1302 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1303 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
7df15b1e
HG		 1304 }
1305
8ca151b5
JB		 1306 /*
1307 * P2P_DEVICE interface does not have a channel context assigned to it,
1308 * so a dedicated PHY context is allocated to it and the corresponding
1309 * MAC context is bound to it at this stage.
1310 */
1311 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 1312
fe0f2de3
IP		 1313 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1314 if (!mvmvif->phy_ctxt) {
1315 ret = -ENOSPC;
bd3351ba 1316 goto out_free_bf;
fe0f2de3 1317 }
8ca151b5 1318
53a9d61e 1319 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1320 ret = iwl_mvm_binding_add_vif(mvm, vif);
1321 if (ret)
53a9d61e 1322 goto out_unref_phy;
8ca151b5 1323
013290aa 1324 ret = iwl_mvm_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1325 if (ret)
1326 goto out_unbind;
1327
1328 /* Save a pointer to p2p device vif, so it can later be used to
1329 * update the p2p device MAC when a GO is started/stopped */
1330 mvm->p2p_device_vif = vif;
1331 }
1332
63494374 1333 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1334 goto out_unlock;
1335
1336 out_unbind:
1337 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 1338 out_unref_phy:
fe0f2de3 1339 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
bd3351ba
EP		 1340 out_free_bf:
1341 if (mvm->bf_allowed_vif == mvmvif) {
1342 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1343 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1344 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
bd3351ba 1345 }
8ca151b5
JB		 1346 out_remove_mac:
1347 mvmvif->phy_ctxt = NULL;
1348 iwl_mvm_mac_ctxt_remove(mvm, vif);
1349 out_release:
5ee2b215
AB		 1350 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1351 mvm->vif_count--;
1c2abf72 1352
8ca151b5
JB		 1353 iwl_mvm_mac_ctxt_release(mvm, vif);
1354 out_unlock:
1355 mutex_unlock(&mvm->mutex);
1356
d40fc489
GG		 1357 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1358
8ca151b5
JB		 1359 return ret;
1360}
1361
38a12b5b
JB		 1362static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1363 struct ieee80211_vif *vif)
8ca151b5 1364{
d92b732e 1365 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
8ca151b5
JB		 1366
1367 if (tfd_msk) {
fe92e32a
EG		 1368 /*
1369 * mac80211 first removes all the stations of the vif and
1370 * then removes the vif. When it removes a station it also
1371 * flushes the AMPDU session. So by now, all the AMPDU sessions
1372 * of all the stations of this vif are closed, and the queues
1373 * of these AMPDU sessions are properly closed.
1374 * We still need to take care of the shared queues of the vif.
1375 * Flush them here.
1376 */
8ca151b5 1377 mutex_lock(&mvm->mutex);
5888a40c 1378 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
8ca151b5 1379 mutex_unlock(&mvm->mutex);
fe92e32a
EG		 1380
1381 /*
1382 * There are transports that buffer a few frames in the host.
1383 * For these, the flush above isn't enough since while we were
1384 * flushing, the transport might have sent more frames to the
1385 * device. To solve this, wait here until the transport is
1386 * empty. Technically, this could have replaced the flush
1387 * above, but flush is much faster than draining. So flush
1388 * first, and drain to make sure we have no frames in the
1389 * transport anymore.
1390 * If a station still had frames on the shared queues, it is
1391 * already marked as draining, so to complete the draining, we
1392 * just need to wait until the transport is empty.
1393 */
1394 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
8ca151b5
JB		 1395 }
1396
1397 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1398 /*
1399 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1400 * We assume here that all the packets sent to the OFFCHANNEL
1401 * queue are sent in ROC session.
1402 */
1403 flush_work(&mvm->roc_done_wk);
1404 } else {
1405 /*
1406 * By now, all the AC queues are empty. The AGG queues are
1407 * empty too. We already got all the Tx responses for all the
1408 * packets in the queues. The drain work can have been
0742a75a 1409 * triggered. Flush it.
8ca151b5
JB		 1410 */
1411 flush_work(&mvm->sta_drained_wk);
1412 }
38a12b5b
JB		 1413}
1414
1415static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1416 struct ieee80211_vif *vif)
1417{
1418 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1419 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1420
1421 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 1422
1423 mutex_lock(&mvm->mutex);
1424
7df15b1e
HG		 1425 if (mvm->bf_allowed_vif == mvmvif) {
1426 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1427 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1428 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
7df15b1e
HG		 1429 }
1430
63494374
JB		 1431 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1432
8ca151b5
JB		 1433 /*
1434 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 1435 * interface is be handled as part of the stop_ap flow.
8ca151b5 1436 */
5023d966
JB		 1437 if (vif->type == NL80211_IFTYPE_AP ||
1438 vif->type == NL80211_IFTYPE_ADHOC) {
507cadf2
DS		 1439#ifdef CONFIG_NL80211_TESTMODE
1440 if (vif == mvm->noa_vif) {
1441 mvm->noa_vif = NULL;
1442 mvm->noa_duration = 0;
1443 }
1444#endif
013290aa 1445 iwl_mvm_dealloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1446 goto out_release;
1447 }
1448
1449 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1450 mvm->p2p_device_vif = NULL;
013290aa 1451 iwl_mvm_rm_bcast_sta(mvm, vif);
8ca151b5 1452 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 1453 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1454 mvmvif->phy_ctxt = NULL;
1455 }
1456
5ee2b215 1457 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5 1458 mvm->vif_count--;
1c2abf72 1459
999609f1 1460 iwl_mvm_power_update_mac(mvm);
8ca151b5
JB		 1461 iwl_mvm_mac_ctxt_remove(mvm, vif);
1462
1463out_release:
1464 iwl_mvm_mac_ctxt_release(mvm, vif);
1465 mutex_unlock(&mvm->mutex);
1466}
1467
1468static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
88f2fd73 1469{
8ca151b5
JB		 1470 return 0;
1471}
1472
e59647ea
EP		 1473struct iwl_mvm_mc_iter_data {
1474 struct iwl_mvm *mvm;
1475 int port_id;
1476};
1477
1478static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1479 struct ieee80211_vif *vif)
1480{
1481 struct iwl_mvm_mc_iter_data *data = _data;
1482 struct iwl_mvm *mvm = data->mvm;
1483 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1484 int ret, len;
1485
1486 /* if we don't have free ports, mcast frames will be dropped */
1487 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1488 return;
1489
1490 if (vif->type != NL80211_IFTYPE_STATION ||
1491 !vif->bss_conf.assoc)
1492 return;
1493
1494 cmd->port_id = data->port_id++;
1495 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1496 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1497
1c4abec0 1498 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
e59647ea
EP		 1499 if (ret)
1500 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1501}
1502
1503static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1504{
1505 struct iwl_mvm_mc_iter_data iter_data = {
1506 .mvm = mvm,
88f2fd73
MG		 1507 };
1508
e59647ea
EP		 1509 lockdep_assert_held(&mvm->mutex);
1510
1511 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1512 return;
1513
1c4abec0 1514 ieee80211_iterate_active_interfaces_atomic(
e59647ea
EP		 1515 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1516 iwl_mvm_mc_iface_iterator, &iter_data);
88f2fd73
MG		 1517}
1518
e59647ea
EP		 1519static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1520 struct netdev_hw_addr_list *mc_list)
8ca151b5 1521{
e59647ea
EP		 1522 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1523 struct iwl_mcast_filter_cmd *cmd;
1524 struct netdev_hw_addr *addr;
f3bd58f4
MS		 1525 int addr_count;
1526 bool pass_all;
e59647ea
EP		 1527 int len;
1528
f3bd58f4
MS		 1529 addr_count = netdev_hw_addr_list_count(mc_list);
1530 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1531 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1532 if (pass_all)
e59647ea 1533 addr_count = 0;
e59647ea
EP		 1534
1535 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1536 cmd = kzalloc(len, GFP_ATOMIC);
1537 if (!cmd)
1538 return 0;
1539
1540 if (pass_all) {
1541 cmd->pass_all = 1;
1542 return (u64)(unsigned long)cmd;
1543 }
1544
1545 netdev_hw_addr_list_for_each(addr, mc_list) {
1546 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1547 cmd->count, addr->addr);
1548 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1549 addr->addr, ETH_ALEN);
1550 cmd->count++;
1551 }
1552
1553 return (u64)(unsigned long)cmd;
8ca151b5
JB		 1554}
1555
1556static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1557 unsigned int changed_flags,
1558 unsigned int *total_flags,
1559 u64 multicast)
1560{
e59647ea
EP		 1561 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1562 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
8ca151b5 1563
e59647ea 1564 mutex_lock(&mvm->mutex);
51b6b9e0 1565
e59647ea
EP		 1566 /* replace previous configuration */
1567 kfree(mvm->mcast_filter_cmd);
1568 mvm->mcast_filter_cmd = cmd;
51b6b9e0 1569
e59647ea
EP		 1570 if (!cmd)
1571 goto out;
51b6b9e0 1572
e59647ea
EP		 1573 iwl_mvm_recalc_multicast(mvm);
1574out:
1575 mutex_unlock(&mvm->mutex);
1576 *total_flags = 0;
51b6b9e0
EG		 1577}
1578
effd1929
AO		 1579static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1580 struct ieee80211_vif *vif,
1581 unsigned int filter_flags,
1582 unsigned int changed_flags)
1583{
1584 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1585
1586 /* We support only filter for probe requests */
1587 if (!(changed_flags & FIF_PROBE_REQ))
1588 return;
1589
1590 /* Supported only for p2p client interfaces */
1591 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1592 !vif->p2p)
1593 return;
1594
1595 mutex_lock(&mvm->mutex);
1596 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1597 mutex_unlock(&mvm->mutex);
1598}
1599
c87163b9
EP		 1600#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1601struct iwl_bcast_iter_data {
1602 struct iwl_mvm *mvm;
1603 struct iwl_bcast_filter_cmd *cmd;
1604 u8 current_filter;
1605};
1606
1607static void
1608iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1609 const struct iwl_fw_bcast_filter *in_filter,
1610 struct iwl_fw_bcast_filter *out_filter)
1611{
1612 struct iwl_fw_bcast_filter_attr *attr;
1613 int i;
1614
1615 memcpy(out_filter, in_filter, sizeof(*out_filter));
1616
1617 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1618 attr = &out_filter->attrs[i];
1619
1620 if (!attr->mask)
1621 break;
1622
2ee8f021
EP		 1623 switch (attr->reserved1) {
1624 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1625 if (vif->bss_conf.arp_addr_cnt != 1) {
1626 attr->mask = 0;
1627 continue;
1628 }
1629
1630 attr->val = vif->bss_conf.arp_addr_list[0];
1631 break;
1632 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1633 attr->val = *(__be32 *)&vif->addr[2];
1634 break;
1635 default:
1636 break;
1637 }
1638 attr->reserved1 = 0;
c87163b9
EP		 1639 out_filter->num_attrs++;
1640 }
1641}
1642
1643static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1644 struct ieee80211_vif *vif)
1645{
1646 struct iwl_bcast_iter_data *data = _data;
1647 struct iwl_mvm *mvm = data->mvm;
1648 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1649 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1650 struct iwl_fw_bcast_mac *bcast_mac;
1651 int i;
1652
1653 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1654 return;
1655
1656 bcast_mac = &cmd->macs[mvmvif->id];
1657
e48393e8
IP		 1658 /*
1659 * enable filtering only for associated stations, but not for P2P
1660 * Clients
1661 */
1662 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1663 !vif->bss_conf.assoc)
c87163b9
EP		 1664 return;
1665
1666 bcast_mac->default_discard = 1;
1667
1668 /* copy all configured filters */
1669 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1670 /*
1671 * Make sure we don't exceed our filters limit.
1672 * if there is still a valid filter to be configured,
1673 * be on the safe side and just allow bcast for this mac.
1674 */
1675 if (WARN_ON_ONCE(data->current_filter >=
1676 ARRAY_SIZE(cmd->filters))) {
1677 bcast_mac->default_discard = 0;
1678 bcast_mac->attached_filters = 0;
1679 break;
1680 }
1681
1682 iwl_mvm_set_bcast_filter(vif,
1683 &mvm->bcast_filters[i],
1684 &cmd->filters[data->current_filter]);
1685
1686 /* skip current filter if it contains no attributes */
1687 if (!cmd->filters[data->current_filter].num_attrs)
1688 continue;
1689
1690 /* attach the filter to current mac */
1691 bcast_mac->attached_filters |=
1692 cpu_to_le16(BIT(data->current_filter));
1693
1694 data->current_filter++;
1695 }
1696}
1697
de06a59e
EP		 1698bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1699 struct iwl_bcast_filter_cmd *cmd)
c87163b9 1700{
c87163b9
EP		 1701 struct iwl_bcast_iter_data iter_data = {
1702 .mvm = mvm,
de06a59e 1703 .cmd = cmd,
c87163b9
EP		 1704 };
1705
3b8983b1
MS		 1706 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1707 return false;
1708
de06a59e
EP		 1709 memset(cmd, 0, sizeof(*cmd));
1710 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1711 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1712
1713#ifdef CONFIG_IWLWIFI_DEBUGFS
1714 /* use debugfs filters/macs if override is configured */
1715 if (mvm->dbgfs_bcast_filtering.override) {
1716 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1717 sizeof(cmd->filters));
1718 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1719 sizeof(cmd->macs));
1720 return true;
1721 }
1722#endif
c87163b9
EP		 1723
1724 /* if no filters are configured, do nothing */
1725 if (!mvm->bcast_filters)
de06a59e 1726 return false;
c87163b9
EP		 1727
1728 /* configure and attach these filters for each associated sta vif */
1729 ieee80211_iterate_active_interfaces(
1730 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1731 iwl_mvm_bcast_filter_iterator, &iter_data);
1732
de06a59e
EP		 1733 return true;
1734}
34672bb3
EP		 1735
1736static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
de06a59e
EP		 1737{
1738 struct iwl_bcast_filter_cmd cmd;
1739
1740 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1741 return 0;
1742
1743 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1744 return 0;
1745
a1022927 1746 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
c87163b9
EP		 1747 sizeof(cmd), &cmd);
1748}
1749#else
34672bb3 1750static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
c87163b9
EP		 1751{
1752 return 0;
1753}
1754#endif
1755
8ca151b5
JB		 1756static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1757 struct ieee80211_vif *vif,
1758 struct ieee80211_bss_conf *bss_conf,
1759 u32 changes)
1760{
1761 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1762 int ret;
1763
6e97b0d2
IP		 1764 /*
1765 * Re-calculate the tsf id, as the master-slave relations depend on the
1766 * beacon interval, which was not known when the station interface was
1767 * added.
1768 */
1769 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1770 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1771
3dfd3a97
JB		 1772 /*
1773 * If we're not associated yet, take the (new) BSSID before associating
1774 * so the firmware knows. If we're already associated, then use the old
1775 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1776 * branch for disassociation below.
1777 */
1778 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1779 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1780
1781 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
8ca151b5
JB		 1782 if (ret)
1783 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1784
3dfd3a97
JB		 1785 /* after sending it once, adopt mac80211 data */
1786 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1787 mvmvif->associated = bss_conf->assoc;
1788
8ca151b5
JB		 1789 if (changes & BSS_CHANGED_ASSOC) {
1790 if (bss_conf->assoc) {
33cef925
JB		 1791 /* clear statistics to get clean beacon counter */
1792 iwl_mvm_request_statistics(mvm, true);
1793 memset(&mvmvif->beacon_stats, 0,
1794 sizeof(mvmvif->beacon_stats));
1795
8ca151b5 1796 /* add quota for this interface */
7754ae79 1797 ret = iwl_mvm_update_quotas(mvm, true, NULL);
8ca151b5
JB		 1798 if (ret) {
1799 IWL_ERR(mvm, "failed to update quotas\n");
1800 return;
1801 }
016d27e1
JB		 1802
1803 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1804 &mvm->status)) {
1805 /*
1806 * If we're restarting then the firmware will
1807 * obviously have lost synchronisation with
1808 * the AP. It will attempt to synchronise by
1809 * itself, but we can make it more reliable by
1810 * scheduling a session protection time event.
1811 *
1812 * The firmware needs to receive a beacon to
1813 * catch up with synchronisation, use 110% of
1814 * the beacon interval.
1815 *
1816 * Set a large maximum delay to allow for more
1817 * than a single interface.
1818 */
1819 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1820 iwl_mvm_protect_session(mvm, vif, dur, dur,
d20d37bc 1821 5 * dur, false);
016d27e1 1822 }
1f3b0ff8
LE		 1823
1824 iwl_mvm_sf_update(mvm, vif, false);
175a70b7 1825 iwl_mvm_power_vif_assoc(mvm, vif);
697162a1 1826 if (vif->p2p) {
29a90a49 1827 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
697162a1
EG		 1828 iwl_mvm_update_smps(mvm, vif,
1829 IWL_MVM_SMPS_REQ_PROT,
1830 IEEE80211_SMPS_DYNAMIC);
1831 }
8ca151b5 1832 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1f3b0ff8
LE		 1833 /*
1834 * If update fails - SF might be running in associated
1835 * mode while disassociated - which is forbidden.
1836 */
1837 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1838 "Failed to update SF upon disassociation\n");
1839
8ca151b5
JB		 1840 /* remove AP station now that the MAC is unassoc */
1841 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1842 if (ret)
1843 IWL_ERR(mvm, "failed to remove AP station\n");
37577fe2
EP		 1844
1845 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1846 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
8ca151b5
JB		 1847 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1848 /* remove quota for this interface */
7754ae79 1849 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5
JB		 1850 if (ret)
1851 IWL_ERR(mvm, "failed to update quotas\n");
29a90a49
EP		 1852
1853 if (vif->p2p)
1854 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
3dfd3a97
JB		 1855
1856 /* this will take the cleared BSSID from bss_conf */
1857 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1858 if (ret)
1859 IWL_ERR(mvm,
1860 "failed to update MAC %pM (clear after unassoc)\n",
1861 vif->addr);
8ca151b5 1862 }
a20fd398 1863
e59647ea 1864 iwl_mvm_recalc_multicast(mvm);
34672bb3 1865 iwl_mvm_configure_bcast_filter(mvm);
e59647ea 1866
a20fd398
AO		 1867 /* reset rssi values */
1868 mvmvif->bf_data.ave_beacon_signal = 0;
1869
8e484f0b 1870 iwl_mvm_bt_coex_vif_change(mvm);
f94045ed
EG		 1871 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1872 IEEE80211_SMPS_AUTOMATIC);
355346ba
AS		 1873 if (fw_has_capa(&mvm->fw->ucode_capa,
1874 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1875 iwl_mvm_config_scan(mvm);
989c6505 1876 } else if (changes & BSS_CHANGED_BEACON_INFO) {
210a544e
JB		 1877 /*
1878 * We received a beacon _after_ association so
1879 * remove the session protection.
1880 */
1881 iwl_mvm_remove_time_event(mvm, mvmvif,
1882 &mvmvif->time_event_data);
8ca151b5 1883 }
cc87d322
EH		 1884
1885 if (changes & BSS_CHANGED_BEACON_INFO) {
1886 iwl_mvm_sf_update(mvm, vif, false);
1887 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1888 }
1889
1bc10d3b
JB		 1890 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1891 ret = iwl_mvm_power_update_mac(mvm);
1892 if (ret)
1893 IWL_ERR(mvm, "failed to update power mode\n");
1894 }
1895
88f2fd73
MG		 1896 if (changes & BSS_CHANGED_TXPOWER) {
1897 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1898 bss_conf->txpower);
1899 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1900 }
a20fd398
AO		 1901
1902 if (changes & BSS_CHANGED_CQM) {
3c6acb61 1903 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
a20fd398
AO		 1904 /* reset cqm events tracking */
1905 mvmvif->bf_data.last_cqm_event = 0;
fa7b2e7f
AA		 1906 if (mvmvif->bf_data.bf_enabled) {
1907 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1908 if (ret)
1909 IWL_ERR(mvm,
1910 "failed to update CQM thresholds\n");
1911 }
a20fd398 1912 }
2ee8f021
EP		 1913
1914 if (changes & BSS_CHANGED_ARP_FILTER) {
3c6acb61 1915 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
34672bb3 1916 iwl_mvm_configure_bcast_filter(mvm);
2ee8f021 1917 }
8ca151b5
JB		 1918}
1919
5023d966
JB		 1920static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1921 struct ieee80211_vif *vif)
8ca151b5
JB		 1922{
1923 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1924 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1925 int ret;
1926
576eeee9
EP		 1927 /*
1928 * iwl_mvm_mac_ctxt_add() might read directly from the device
1929 * (the system time), so make sure it is available.
1930 */
1931 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1932 if (ret)
1933 return ret;
1934
8ca151b5
JB		 1935 mutex_lock(&mvm->mutex);
1936
1937 /* Send the beacon template */
1938 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1939 if (ret)
1940 goto out_unlock;
1941
6e97b0d2
IP		 1942 /*
1943 * Re-calculate the tsf id, as the master-slave relations depend on the
1944 * beacon interval, which was not known when the AP interface was added.
1945 */
1946 if (vif->type == NL80211_IFTYPE_AP)
1947 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1948
94939080
GG		 1949 mvmvif->ap_assoc_sta_count = 0;
1950
8ca151b5
JB		 1951 /* Add the mac context */
1952 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1953 if (ret)
1954 goto out_unlock;
1955
1956 /* Perform the binding */
1957 ret = iwl_mvm_binding_add_vif(mvm, vif);
1958 if (ret)
1959 goto out_remove;
1960
8ca151b5
JB		 1961 /* Send the bcast station. At this stage the TBTT and DTIM time events
1962 * are added and applied to the scheduler */
013290aa 1963 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1964 if (ret)
1965 goto out_unbind;
1966
5691e218
IP		 1967 /* must be set before quota calculations */
1968 mvmvif->ap_ibss_active = true;
1969
a11e144e 1970 /* power updated needs to be done before quotas */
999609f1 1971 iwl_mvm_power_update_mac(mvm);
a11e144e 1972
7754ae79 1973 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5 1974 if (ret)
a11e144e 1975 goto out_quota_failed;
8ca151b5 1976
5023d966 1977 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1978 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 1979 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 1980
29a90a49
EP		 1981 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1982
8e484f0b 1983 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1984
f697267f
AN		 1985 /* we don't support TDLS during DCM */
1986 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1987 iwl_mvm_teardown_tdls_peers(mvm);
1988
939e4904 1989 goto out_unlock;
8ca151b5 1990
a11e144e 1991out_quota_failed:
999609f1 1992 iwl_mvm_power_update_mac(mvm);
5691e218 1993 mvmvif->ap_ibss_active = false;
013290aa 1994 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5
JB		 1995out_unbind:
1996 iwl_mvm_binding_remove_vif(mvm, vif);
1997out_remove:
1998 iwl_mvm_mac_ctxt_remove(mvm, vif);
1999out_unlock:
2000 mutex_unlock(&mvm->mutex);
576eeee9 2001 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
8ca151b5
JB		 2002 return ret;
2003}
2004
5023d966
JB		 2005static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2006 struct ieee80211_vif *vif)
8ca151b5
JB		 2007{
2008 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2009 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2010
38a12b5b
JB		 2011 iwl_mvm_prepare_mac_removal(mvm, vif);
2012
8ca151b5
JB		 2013 mutex_lock(&mvm->mutex);
2014
664322fa 2015 /* Handle AP stop while in CSA */
7f0a7c67
AO		 2016 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2017 iwl_mvm_remove_time_event(mvm, mvmvif,
2018 &mvmvif->time_event_data);
664322fa 2019 RCU_INIT_POINTER(mvm->csa_vif, NULL);
e9cb0327 2020 mvmvif->csa_countdown = false;
7f0a7c67 2021 }
664322fa 2022
003e5236
AO		 2023 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2024 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2025 mvm->csa_tx_block_bcn_timeout = 0;
2026 }
2027
5023d966 2028 mvmvif->ap_ibss_active = false;
1c87bbad 2029 mvm->ap_last_beacon_gp2 = 0;
8ca151b5 2030
8e484f0b 2031 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 2032
29a90a49
EP		 2033 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2034
5023d966 2035 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 2036 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 2037 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 2038
7754ae79 2039 iwl_mvm_update_quotas(mvm, false, NULL);
013290aa 2040 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5 2041 iwl_mvm_binding_remove_vif(mvm, vif);
a11e144e 2042
999609f1 2043 iwl_mvm_power_update_mac(mvm);
a11e144e 2044
8ca151b5
JB		 2045 iwl_mvm_mac_ctxt_remove(mvm, vif);
2046
2047 mutex_unlock(&mvm->mutex);
2048}
2049
5023d966
JB		 2050static void
2051iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2052 struct ieee80211_vif *vif,
2053 struct ieee80211_bss_conf *bss_conf,
2054 u32 changes)
8ca151b5 2055{
be2056fc 2056 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8a5e3660 2057
be2056fc
IP		 2058 /* Changes will be applied when the AP/IBSS is started */
2059 if (!mvmvif->ap_ibss_active)
2060 return;
2061
863230da 2062 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
f7d8b702 2063 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
3dfd3a97 2064 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
863230da 2065 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
8a5e3660 2066
8ca151b5 2067 /* Need to send a new beacon template to the FW */
863230da
JB		 2068 if (changes & BSS_CHANGED_BEACON &&
2069 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2070 IWL_WARN(mvm, "Failed updating beacon data\n");
79b7a69d
HD		 2071
2072 if (changes & BSS_CHANGED_TXPOWER) {
2073 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2074 bss_conf->txpower);
2075 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2076 }
2077
8ca151b5
JB		 2078}
2079
2080static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2081 struct ieee80211_vif *vif,
2082 struct ieee80211_bss_conf *bss_conf,
2083 u32 changes)
2084{
2085 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2086
576eeee9
EP		 2087 /*
2088 * iwl_mvm_bss_info_changed_station() might call
2089 * iwl_mvm_protect_session(), which reads directly from
2090 * the device (the system time), so make sure it is available.
2091 */
2092 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2093 return;
2094
8ca151b5
JB		 2095 mutex_lock(&mvm->mutex);
2096
723f02ed 2097 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
c7d42480 2098 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
723f02ed 2099
8ca151b5
JB		 2100 switch (vif->type) {
2101 case NL80211_IFTYPE_STATION:
2102 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2103 break;
2104 case NL80211_IFTYPE_AP:
5023d966
JB		 2105 case NL80211_IFTYPE_ADHOC:
2106 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
8ca151b5
JB		 2107 break;
2108 default:
2109 /* shouldn't happen */
2110 WARN_ON_ONCE(1);
2111 }
2112
2113 mutex_unlock(&mvm->mutex);
576eeee9 2114 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
8ca151b5
JB		 2115}
2116
2117static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2118 struct ieee80211_vif *vif,
c56ef672 2119 struct ieee80211_scan_request *hw_req)
8ca151b5
JB		 2120{
2121 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2122 int ret;
2123
6749dd80
LC		 2124 if (hw_req->req.n_channels == 0 ||
2125 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
8ca151b5
JB		 2126 return -EINVAL;
2127
2128 mutex_lock(&mvm->mutex);
6749dd80 2129 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
8ca151b5 2130 mutex_unlock(&mvm->mutex);
6749dd80 2131
8ca151b5
JB		 2132 return ret;
2133}
2134
2135static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2136 struct ieee80211_vif *vif)
2137{
2138 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2139
2140 mutex_lock(&mvm->mutex);
2141
e7d3abab
LC		 2142 /* Due to a race condition, it's possible that mac80211 asks
2143 * us to stop a hw_scan when it's already stopped. This can
2144 * happen, for instance, if we stopped the scan ourselves,
2145 * called ieee80211_scan_completed() and the userspace called
2146 * cancel scan scan before ieee80211_scan_work() could run.
2147 * To handle that, simply return if the scan is not running.
2148 */
262888fc 2149 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
c7d42480 2150 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
8ca151b5
JB		 2151
2152 mutex_unlock(&mvm->mutex);
2153}
2154
2155static void
2156iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
3e56eadf 2157 struct ieee80211_sta *sta, u16 tids,
8ca151b5
JB		 2158 int num_frames,
2159 enum ieee80211_frame_release_type reason,
2160 bool more_data)
2161{
2162 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5 2163
3e56eadf 2164 /* Called when we need to transmit (a) frame(s) from mac80211 */
8ca151b5 2165
3e56eadf
JB		 2166 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2167 tids, more_data, false);
2168}
2169
2170static void
2171iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2172 struct ieee80211_sta *sta, u16 tids,
2173 int num_frames,
2174 enum ieee80211_frame_release_type reason,
2175 bool more_data)
2176{
2177 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2178
2179 /* Called when we need to transmit (a) frame(s) from agg queue */
2180
2181 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2182 tids, more_data, true);
8ca151b5
JB		 2183}
2184
2185static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2186 struct ieee80211_vif *vif,
2187 enum sta_notify_cmd cmd,
2188 struct ieee80211_sta *sta)
2189{
2190 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5b577a90 2191 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
c22b0ff5 2192 unsigned long txqs = 0, tids = 0;
3e56eadf 2193 int tid;
8ca151b5 2194
c22b0ff5
EG		 2195 spin_lock_bh(&mvmsta->lock);
2196 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2197 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2198
2199 if (tid_data->state != IWL_AGG_ON &&
2200 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2201 continue;
2202
2203 __set_bit(tid_data->txq_id, &txqs);
2204
2205 if (iwl_mvm_tid_queued(tid_data) == 0)
2206 continue;
2207
2208 __set_bit(tid, &tids);
2209 }
2210
8ca151b5
JB		 2211 switch (cmd) {
2212 case STA_NOTIFY_SLEEP:
e3d4bc8c 2213 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5 2214 ieee80211_sta_block_awake(hw, sta, true);
3e56eadf 2215
c22b0ff5 2216 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
3e56eadf 2217 ieee80211_sta_set_buffered(sta, tid, true);
c22b0ff5
EG		 2218
2219 if (txqs)
2220 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
8ca151b5
JB		 2221 /*
2222 * The fw updates the STA to be asleep. Tx packets on the Tx
2223 * queues to this station will not be transmitted. The fw will
2224 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2225 */
2226 break;
2227 case STA_NOTIFY_AWAKE:
881acd89 2228 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
8ca151b5 2229 break;
c22b0ff5
EG		 2230
2231 if (txqs)
2232 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
9cc40712 2233 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 2234 break;
2235 default:
2236 break;
2237 }
c22b0ff5 2238 spin_unlock_bh(&mvmsta->lock);
8ca151b5
JB		 2239}
2240
1ddbbb0c
JB		 2241static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2242 struct ieee80211_vif *vif,
2243 struct ieee80211_sta *sta)
2244{
2245 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
94939080 2246 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
9d8ce6af 2247 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1ddbbb0c
JB		 2248
2249 /*
2250 * This is called before mac80211 does RCU synchronisation,
2251 * so here we already invalidate our internal RCU-protected
2252 * station pointer. The rest of the code will thus no longer
2253 * be able to find the station this way, and we don't rely
2254 * on further RCU synchronisation after the sta_state()
2255 * callback deleted the station.
2256 */
2257 mutex_lock(&mvm->mutex);
2258 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2259 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2260 ERR_PTR(-ENOENT));
94939080
GG		 2261
2262 if (mvm_sta->vif->type == NL80211_IFTYPE_AP) {
2263 mvmvif->ap_assoc_sta_count--;
f82c8339 2264 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
94939080
GG		 2265 }
2266
1ddbbb0c
JB		 2267 mutex_unlock(&mvm->mutex);
2268}
2269
bd1ba664
JB		 2270static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2271 const u8 *bssid)
2272{
2273 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2274 return;
2275
2276 if (iwlwifi_mod_params.uapsd_disable) {
2277 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2278 return;
2279 }
2280
2281 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2282}
2283
1e8f1329
GBA		 2284static void
2285iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2286 struct ieee80211_vif *vif, u8 *peer_addr,
2287 enum nl80211_tdls_operation action)
2288{
2289 struct iwl_fw_dbg_trigger_tlv *trig;
2290 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2291
2292 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2293 return;
2294
2295 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2296 tdls_trig = (void *)trig->data;
2297 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2298 return;
2299
2300 if (!(tdls_trig->action_bitmap & BIT(action)))
2301 return;
2302
2303 if (tdls_trig->peer_mode &&
2304 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2305 return;
2306
2307 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2308 "TDLS event occurred, peer %pM, action %d",
2309 peer_addr, action);
2310}
2311
8ca151b5
JB		 2312static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2313 struct ieee80211_vif *vif,
2314 struct ieee80211_sta *sta,
2315 enum ieee80211_sta_state old_state,
2316 enum ieee80211_sta_state new_state)
2317{
2318 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2319 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2320 int ret;
2321
2322 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2323 sta->addr, old_state, new_state);
2324
2325 /* this would be a mac80211 bug ... but don't crash */
2326 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2327 return -EINVAL;
2328
2329 /* if a STA is being removed, reuse its ID */
2330 flush_work(&mvm->sta_drained_wk);
2331
2332 mutex_lock(&mvm->mutex);
2333 if (old_state == IEEE80211_STA_NOTEXIST &&
2334 new_state == IEEE80211_STA_NONE) {
48bc1307
JB		 2335 /*
2336 * Firmware bug - it'll crash if the beacon interval is less
2337 * than 16. We can't avoid connecting at all, so refuse the
2338 * station state change, this will cause mac80211 to abandon
2339 * attempts to connect to this AP, and eventually wpa_s will
2340 * blacklist the AP...
2341 */
2342 if (vif->type == NL80211_IFTYPE_STATION &&
2343 vif->bss_conf.beacon_int < 16) {
2344 IWL_ERR(mvm,
2345 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2346 sta->addr, vif->bss_conf.beacon_int);
2347 ret = -EINVAL;
2348 goto out_unlock;
2349 }
cf7b491d
AN		 2350
2351 if (sta->tdls &&
2352 (vif->p2p ||
fa3d07e4
AN		 2353 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2354 IWL_MVM_TDLS_STA_COUNT ||
cf7b491d
AN		 2355 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2356 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2357 ret = -EBUSY;
2358 goto out_unlock;
2359 }
2360
8ca151b5 2361 ret = iwl_mvm_add_sta(mvm, vif, sta);
1e8f1329 2362 if (sta->tdls && ret == 0) {
fa3d07e4 2363 iwl_mvm_recalc_tdls_state(mvm, vif, true);
1e8f1329
GBA		 2364 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2365 NL80211_TDLS_SETUP);
2366 }
8ca151b5
JB		 2367 } else if (old_state == IEEE80211_STA_NONE &&
2368 new_state == IEEE80211_STA_AUTH) {
e820c2da
HD		 2369 /*
2370 * EBS may be disabled due to previous failures reported by FW.
2371 * Reset EBS status here assuming environment has been changed.
2372 */
2373 mvm->last_ebs_successful = true;
bd1ba664 2374 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
8ca151b5
JB		 2375 ret = 0;
2376 } else if (old_state == IEEE80211_STA_AUTH &&
2377 new_state == IEEE80211_STA_ASSOC) {
7a453973
JB		 2378 ret = iwl_mvm_update_sta(mvm, vif, sta);
2379 if (ret == 0)
2380 iwl_mvm_rs_rate_init(mvm, sta,
b87c2179
ES		 2381 mvmvif->phy_ctxt->channel->band,
2382 true);
8ca151b5
JB		 2383 } else if (old_state == IEEE80211_STA_ASSOC &&
2384 new_state == IEEE80211_STA_AUTHORIZED) {
f59e0e3c
AN		 2385
2386 /* we don't support TDLS during DCM */
2387 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2388 iwl_mvm_teardown_tdls_peers(mvm);
2389
1e8f1329
GBA		 2390 if (sta->tdls)
2391 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2392 NL80211_TDLS_ENABLE_LINK);
2393
7df15b1e 2394 /* enable beacon filtering */
fa7b2e7f 2395 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2396 ret = 0;
2397 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2398 new_state == IEEE80211_STA_ASSOC) {
7df15b1e 2399 /* disable beacon filtering */
a1022927 2400 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2401 ret = 0;
2402 } else if (old_state == IEEE80211_STA_ASSOC &&
2403 new_state == IEEE80211_STA_AUTH) {
2404 ret = 0;
2405 } else if (old_state == IEEE80211_STA_AUTH &&
2406 new_state == IEEE80211_STA_NONE) {
2407 ret = 0;
2408 } else if (old_state == IEEE80211_STA_NONE &&
2409 new_state == IEEE80211_STA_NOTEXIST) {
2410 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1e8f1329 2411 if (sta->tdls) {
fa3d07e4 2412 iwl_mvm_recalc_tdls_state(mvm, vif, false);
1e8f1329
GBA		 2413 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2414 NL80211_TDLS_DISABLE_LINK);
2415 }
8ca151b5
JB		 2416 } else {
2417 ret = -EIO;
2418 }
48bc1307 2419 out_unlock:
8ca151b5
JB		 2420 mutex_unlock(&mvm->mutex);
2421
9c126cd6
LK		 2422 if (sta->tdls && ret == 0) {
2423 if (old_state == IEEE80211_STA_NOTEXIST &&
2424 new_state == IEEE80211_STA_NONE)
2425 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2426 else if (old_state == IEEE80211_STA_NONE &&
2427 new_state == IEEE80211_STA_NOTEXIST)
2428 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2429 }
2430
8ca151b5
JB		 2431 return ret;
2432}
2433
2434static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2435{
2436 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2437
2438 mvm->rts_threshold = value;
2439
2440 return 0;
2441}
2442
1f3b0ff8
LE		 2443static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2444 struct ieee80211_vif *vif,
2445 struct ieee80211_sta *sta, u32 changed)
2446{
2447 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2448
2449 if (vif->type == NL80211_IFTYPE_STATION &&
2450 changed & IEEE80211_RC_NSS_CHANGED)
2451 iwl_mvm_sf_update(mvm, vif, false);
2452}
2453
8ca151b5
JB		 2454static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2455 struct ieee80211_vif *vif, u16 ac,
2456 const struct ieee80211_tx_queue_params *params)
2457{
2458 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2459 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2460
2461 mvmvif->queue_params[ac] = *params;
2462
2463 /*
2464 * No need to update right away, we'll get BSS_CHANGED_QOS
2465 * The exception is P2P_DEVICE interface which needs immediate update.
2466 */
2467 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2468 int ret;
2469
2470 mutex_lock(&mvm->mutex);
3dfd3a97 2471 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
8ca151b5
JB		 2472 mutex_unlock(&mvm->mutex);
2473 return ret;
2474 }
2475 return 0;
2476}
2477
2478static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2479 struct ieee80211_vif *vif)
2480{
2481 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2482 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2483 200 + vif->bss_conf.beacon_int);
2484 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2485 100 + vif->bss_conf.beacon_int);
2486
2487 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2488 return;
2489
576eeee9
EP		 2490 /*
2491 * iwl_mvm_protect_session() reads directly from the device
2492 * (the system time), so make sure it is available.
2493 */
2494 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2495 return;
2496
8ca151b5
JB		 2497 mutex_lock(&mvm->mutex);
2498 /* Try really hard to protect the session and hear a beacon */
d20d37bc 2499 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
8ca151b5 2500 mutex_unlock(&mvm->mutex);
576eeee9
EP		 2501
2502 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
8ca151b5
JB		 2503}
2504
35a000b7
DS		 2505static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2506 struct ieee80211_vif *vif,
2507 struct cfg80211_sched_scan_request *req,
633e2713 2508 struct ieee80211_scan_ies *ies)
35a000b7
DS		 2509{
2510 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
35a000b7 2511
35a000b7 2512 int ret;
4660dfbb 2513
35a000b7
DS		 2514 mutex_lock(&mvm->mutex);
2515
1f940386 2516 if (!vif->bss_conf.idle) {
bd5e4744
DS		 2517 ret = -EBUSY;
2518 goto out;
2519 }
2520
19945dfb 2521 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
d2496221 2522
35a000b7
DS		 2523out:
2524 mutex_unlock(&mvm->mutex);
2525 return ret;
2526}
2527
37e3308c
JB		 2528static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2529 struct ieee80211_vif *vif)
35a000b7
DS		 2530{
2531 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
33ea27f6 2532 int ret;
35a000b7
DS		 2533
2534 mutex_lock(&mvm->mutex);
e7d3abab
LC		 2535
2536 /* Due to a race condition, it's possible that mac80211 asks
2537 * us to stop a sched_scan when it's already stopped. This
2538 * can happen, for instance, if we stopped the scan ourselves,
2539 * called ieee80211_sched_scan_stopped() and the userspace called
2540 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2541 * could run. To handle this, simply return if the scan is
2542 * not running.
2543 */
262888fc 2544 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
e7d3abab
LC		 2545 mutex_unlock(&mvm->mutex);
2546 return 0;
2547 }
2548
c7d42480 2549 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
35a000b7 2550 mutex_unlock(&mvm->mutex);
33ea27f6 2551 iwl_mvm_wait_for_async_handlers(mvm);
37e3308c 2552
33ea27f6 2553 return ret;
35a000b7
DS		 2554}
2555
8ca151b5
JB		 2556static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2557 enum set_key_cmd cmd,
2558 struct ieee80211_vif *vif,
2559 struct ieee80211_sta *sta,
2560 struct ieee80211_key_conf *key)
2561{
2562 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2563 int ret;
d6ee54a9 2564 u8 key_offset;
8ca151b5
JB		 2565
2566 if (iwlwifi_mod_params.sw_crypto) {
2567 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2568 return -EOPNOTSUPP;
2569 }
2570
2571 switch (key->cipher) {
2572 case WLAN_CIPHER_SUITE_TKIP:
2573 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
8ca151b5
JB		 2574 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2575 break;
ca8c0f4b
JB		 2576 case WLAN_CIPHER_SUITE_CCMP:
2577 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2578 break;
8ca151b5 2579 case WLAN_CIPHER_SUITE_AES_CMAC:
30686bf7 2580 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
8ca151b5
JB		 2581 break;
2582 case WLAN_CIPHER_SUITE_WEP40:
2583 case WLAN_CIPHER_SUITE_WEP104:
ba3943b0
JB		 2584 /* For non-client mode, only use WEP keys for TX as we probably
2585 * don't have a station yet anyway and would then have to keep
2586 * track of the keys, linking them to each of the clients/peers
2587 * as they appear. For now, don't do that, for performance WEP
2588 * offload doesn't really matter much, but we need it for some
2589 * other offload features in client mode.
8ca151b5 2590 */
ba3943b0
JB		 2591 if (vif->type != NL80211_IFTYPE_STATION)
2592 return 0;
2593 break;
8ca151b5 2594 default:
e36e5433
MS		 2595 /* currently FW supports only one optional cipher scheme */
2596 if (hw->n_cipher_schemes &&
2597 hw->cipher_schemes->cipher == key->cipher)
2598 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2599 else
2600 return -EOPNOTSUPP;
8ca151b5
JB		 2601 }
2602
2603 mutex_lock(&mvm->mutex);
2604
2605 switch (cmd) {
2606 case SET_KEY:
5023d966
JB		 2607 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2608 vif->type == NL80211_IFTYPE_AP) && !sta) {
2609 /*
2610 * GTK on AP interface is a TX-only key, return 0;
2611 * on IBSS they're per-station and because we're lazy
2612 * we don't support them for RX, so do the same.
2613 */
6caffd4f
JB		 2614 ret = 0;
2615 key->hw_key_idx = STA_KEY_IDX_INVALID;
2616 break;
2617 }
2618
b546dcd6
JB		 2619 /* During FW restart, in order to restore the state as it was,
2620 * don't try to reprogram keys we previously failed for.
2621 */
2622 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2623 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2624 IWL_DEBUG_MAC80211(mvm,
2625 "skip invalid idx key programming during restart\n");
2626 ret = 0;
2627 break;
2628 }
2629
d6ee54a9
LC		 2630 /* in HW restart reuse the index, otherwise request a new one */
2631 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2632 key_offset = key->hw_key_idx;
2633 else
2634 key_offset = STA_KEY_IDX_INVALID;
2635
8ca151b5 2636 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
d6ee54a9 2637 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
8ca151b5
JB		 2638 if (ret) {
2639 IWL_WARN(mvm, "set key failed\n");
2640 /*
2641 * can't add key for RX, but we don't need it
2642 * in the device for TX so still return 0
2643 */
6caffd4f 2644 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 2645 ret = 0;
2646 }
2647
2648 break;
2649 case DISABLE_KEY:
6caffd4f
JB		 2650 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2651 ret = 0;
2652 break;
2653 }
2654
8ca151b5
JB		 2655 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2656 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2657 break;
2658 default:
2659 ret = -EINVAL;
2660 }
2661
2662 mutex_unlock(&mvm->mutex);
2663 return ret;
2664}
2665
2666static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2667 struct ieee80211_vif *vif,
2668 struct ieee80211_key_conf *keyconf,
2669 struct ieee80211_sta *sta,
2670 u32 iv32, u16 *phase1key)
2671{
2672 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2673
5023d966
JB		 2674 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2675 return;
2676
8ca151b5
JB		 2677 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2678}
2679
2680
b112889c
AM		 2681static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2682 struct iwl_rx_packet *pkt, void *data)
2683{
2684 struct iwl_mvm *mvm =
2685 container_of(notif_wait, struct iwl_mvm, notif_wait);
2686 struct iwl_hs20_roc_res *resp;
2687 int resp_len = iwl_rx_packet_payload_len(pkt);
2688 struct iwl_mvm_time_event_data *te_data = data;
2689
2690 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2691 return true;
2692
2693 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2694 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2695 return true;
2696 }
2697
2698 resp = (void *)pkt->data;
2699
2700 IWL_DEBUG_TE(mvm,
2701 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2702 resp->status, resp->event_unique_id);
2703
2704 te_data->uid = le32_to_cpu(resp->event_unique_id);
2705 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2706 te_data->uid);
2707
2708 spin_lock_bh(&mvm->time_event_lock);
2709 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2710 spin_unlock_bh(&mvm->time_event_lock);
2711
2712 return true;
2713}
2714
dc28e12f
MG		 2715#define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2716#define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2717#define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2718#define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2719#define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
b112889c
AM		 2720static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2721 struct ieee80211_channel *channel,
2722 struct ieee80211_vif *vif,
2723 int duration)
2724{
2725 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2726 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2727 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
6eb031d2 2728 static const u16 time_event_response[] = { HOT_SPOT_CMD };
b112889c 2729 struct iwl_notification_wait wait_time_event;
dc28e12f
MG		 2730 u32 dtim_interval = vif->bss_conf.dtim_period *
2731 vif->bss_conf.beacon_int;
2732 u32 req_dur, delay;
b112889c
AM		 2733 struct iwl_hs20_roc_req aux_roc_req = {
2734 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2735 .id_and_color =
2736 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2737 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2738 /* Set the channel info data */
2739 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2740 PHY_BAND_24 : PHY_BAND_5,
2741 .channel_info.channel = channel->hw_value,
2742 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2743 /* Set the time and duration */
2744 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
b112889c
AM		 2745 };
2746
dc28e12f
MG		 2747 delay = AUX_ROC_MIN_DELAY;
2748 req_dur = MSEC_TO_TU(duration);
2749
2750 /*
2751 * If we are associated we want the delay time to be at least one
2752 * dtim interval so that the FW can wait until after the DTIM and
2753 * then start the time event, this will potentially allow us to
2754 * remain off-channel for the max duration.
2755 * Since we want to use almost a whole dtim interval we would also
2756 * like the delay to be for 2-3 dtim intervals, in case there are
2757 * other time events with higher priority.
2758 */
2759 if (vif->bss_conf.assoc) {
2760 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2761 /* We cannot remain off-channel longer than the DTIM interval */
2762 if (dtim_interval <= req_dur) {
2763 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2764 if (req_dur <= AUX_ROC_MIN_DURATION)
2765 req_dur = dtim_interval -
2766 AUX_ROC_MIN_SAFETY_BUFFER;
2767 }
2768 }
2769
2770 aux_roc_req.duration = cpu_to_le32(req_dur);
2771 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2772
2773 IWL_DEBUG_TE(mvm,
2774 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2775 channel->hw_value, req_dur, duration, delay,
2776 dtim_interval);
b112889c
AM		 2777 /* Set the node address */
2778 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2779
a6cc5163
MG		 2780 lockdep_assert_held(&mvm->mutex);
2781
2782 spin_lock_bh(&mvm->time_event_lock);
2783
2784 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2785 spin_unlock_bh(&mvm->time_event_lock);
2786 return -EIO;
2787 }
2788
b112889c
AM		 2789 te_data->vif = vif;
2790 te_data->duration = duration;
2791 te_data->id = HOT_SPOT_CMD;
2792
b112889c
AM		 2793 spin_unlock_bh(&mvm->time_event_lock);
2794
2795 /*
2796 * Use a notification wait, which really just processes the
2797 * command response and doesn't wait for anything, in order
2798 * to be able to process the response and get the UID inside
2799 * the RX path. Using CMD_WANT_SKB doesn't work because it
2800 * stores the buffer and then wakes up this thread, by which
2801 * time another notification (that the time event started)
2802 * might already be processed unsuccessfully.
2803 */
2804 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2805 time_event_response,
2806 ARRAY_SIZE(time_event_response),
2807 iwl_mvm_rx_aux_roc, te_data);
2808
2809 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2810 &aux_roc_req);
2811
2812 if (res) {
2813 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2814 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2815 goto out_clear_te;
2816 }
2817
2818 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2819 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2820 /* should never fail */
2821 WARN_ON_ONCE(res);
2822
2823 if (res) {
2824 out_clear_te:
2825 spin_lock_bh(&mvm->time_event_lock);
2826 iwl_mvm_te_clear_data(mvm, te_data);
2827 spin_unlock_bh(&mvm->time_event_lock);
2828 }
2829
2830 return res;
2831}
2832
8ca151b5
JB		 2833static int iwl_mvm_roc(struct ieee80211_hw *hw,
2834 struct ieee80211_vif *vif,
2835 struct ieee80211_channel *channel,
d339d5ca
IP		 2836 int duration,
2837 enum ieee80211_roc_type type)
8ca151b5
JB		 2838{
2839 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 2840 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 2841 struct cfg80211_chan_def chandef;
31d385ae
IP		 2842 struct iwl_mvm_phy_ctxt *phy_ctxt;
2843 int ret, i;
2844
2845 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2846 duration, type);
8ca151b5 2847
6ed13164
MG		 2848 flush_work(&mvm->roc_done_wk);
2849
a6cc5163
MG		 2850 mutex_lock(&mvm->mutex);
2851
b112889c
AM		 2852 switch (vif->type) {
2853 case NL80211_IFTYPE_STATION:
859d914c
JB		 2854 if (fw_has_capa(&mvm->fw->ucode_capa,
2855 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
5ac6c72e
LC		 2856 /* Use aux roc framework (HS20) */
2857 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2858 vif, duration);
2859 goto out_unlock;
2860 }
2861 IWL_ERR(mvm, "hotspot not supported\n");
2862 ret = -EINVAL;
a6cc5163 2863 goto out_unlock;
b112889c
AM		 2864 case NL80211_IFTYPE_P2P_DEVICE:
2865 /* handle below */
2866 break;
2867 default:
2868 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
a6cc5163
MG		 2869 ret = -EINVAL;
2870 goto out_unlock;
8ca151b5
JB		 2871 }
2872
31d385ae
IP		 2873 for (i = 0; i < NUM_PHY_CTX; i++) {
2874 phy_ctxt = &mvm->phy_ctxts[i];
2875 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2876 continue;
2877
2878 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2879 /*
2880 * Unbind the P2P_DEVICE from the current PHY context,
2881 * and if the PHY context is not used remove it.
2882 */
2883 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2884 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2885 goto out_unlock;
2886
2887 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2888
2889 /* Bind the P2P_DEVICE to the current PHY Context */
2890 mvmvif->phy_ctxt = phy_ctxt;
2891
2892 ret = iwl_mvm_binding_add_vif(mvm, vif);
2893 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2894 goto out_unlock;
2895
2896 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2897 goto schedule_time_event;
2898 }
2899 }
2900
2901 /* Need to update the PHY context only if the ROC channel changed */
2902 if (channel == mvmvif->phy_ctxt->channel)
2903 goto schedule_time_event;
2904
8ca151b5 2905 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 2906
31d385ae
IP		 2907 /*
2908 * Change the PHY context configuration as it is currently referenced
2909 * only by the P2P Device MAC
2910 */
2911 if (mvmvif->phy_ctxt->ref == 1) {
2912 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2913 &chandef, 1, 1);
2914 if (ret)
2915 goto out_unlock;
2916 } else {
2917 /*
2918 * The PHY context is shared with other MACs. Need to remove the
2919 * P2P Device from the binding, allocate an new PHY context and
2920 * create a new binding
2921 */
2922 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2923 if (!phy_ctxt) {
2924 ret = -ENOSPC;
2925 goto out_unlock;
2926 }
2927
2928 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2929 1, 1);
2930 if (ret) {
2931 IWL_ERR(mvm, "Failed to change PHY context\n");
2932 goto out_unlock;
2933 }
2934
2935 /* Unbind the P2P_DEVICE from the current PHY context */
2936 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2937 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2938 goto out_unlock;
2939
2940 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2941
2942 /* Bind the P2P_DEVICE to the new allocated PHY context */
2943 mvmvif->phy_ctxt = phy_ctxt;
2944
2945 ret = iwl_mvm_binding_add_vif(mvm, vif);
2946 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2947 goto out_unlock;
2948
2949 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2950 }
2951
2952schedule_time_event:
8ca151b5 2953 /* Schedule the time events */
e635c797 2954 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 2955
31d385ae 2956out_unlock:
8ca151b5
JB		 2957 mutex_unlock(&mvm->mutex);
2958 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 2959 return ret;
2960}
2961
2962static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2963{
2964 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2965
2966 IWL_DEBUG_MAC80211(mvm, "enter\n");
2967
2968 mutex_lock(&mvm->mutex);
bf5da87f 2969 iwl_mvm_stop_roc(mvm);
8ca151b5
JB		 2970 mutex_unlock(&mvm->mutex);
2971
2972 IWL_DEBUG_MAC80211(mvm, "leave\n");
2973 return 0;
2974}
2975
b08c1d97
LC		 2976static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2977 struct ieee80211_chanctx_conf *ctx)
8ca151b5 2978{
fe0f2de3
IP		 2979 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2980 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 2981 int ret;
2982
b08c1d97
LC		 2983 lockdep_assert_held(&mvm->mutex);
2984
53a9d61e 2985 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 2986
fe0f2de3
IP		 2987 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2988 if (!phy_ctxt) {
2989 ret = -ENOSPC;
2990 goto out;
2991 }
8ca151b5 2992
dcbc3e1a 2993 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
53a9d61e
IP		 2994 ctx->rx_chains_static,
2995 ctx->rx_chains_dynamic);
fe0f2de3
IP		 2996 if (ret) {
2997 IWL_ERR(mvm, "Failed to add PHY context\n");
2998 goto out;
2999 }
3000
53a9d61e 3001 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 3002 *phy_ctxt_id = phy_ctxt->id;
3003out:
b08c1d97
LC		 3004 return ret;
3005}
3006
3007static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3008 struct ieee80211_chanctx_conf *ctx)
3009{
3010 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3011 int ret;
3012
3013 mutex_lock(&mvm->mutex);
3014 ret = __iwl_mvm_add_chanctx(mvm, ctx);
8ca151b5 3015 mutex_unlock(&mvm->mutex);
b08c1d97 3016
8ca151b5
JB		 3017 return ret;
3018}
3019
b08c1d97
LC		 3020static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3021 struct ieee80211_chanctx_conf *ctx)
3022{
3023 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3024 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3025
3026 lockdep_assert_held(&mvm->mutex);
3027
3028 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3029}
3030
8ca151b5
JB		 3031static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3032 struct ieee80211_chanctx_conf *ctx)
3033{
3034 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 3035
3036 mutex_lock(&mvm->mutex);
b08c1d97 3037 __iwl_mvm_remove_chanctx(mvm, ctx);
8ca151b5
JB		 3038 mutex_unlock(&mvm->mutex);
3039}
3040
3041static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3042 struct ieee80211_chanctx_conf *ctx,
3043 u32 changed)
3044{
3045 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 3046 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3047 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 3048
31d385ae
IP		 3049 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3050 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3051 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2dceedae
AN		 3052 IEEE80211_CHANCTX_CHANGE_RADAR |
3053 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
31d385ae
IP		 3054 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3055 phy_ctxt->ref, changed))
3056 return;
3057
8ca151b5 3058 mutex_lock(&mvm->mutex);
4d66449a 3059 iwl_mvm_bt_coex_vif_change(mvm);
dcbc3e1a 3060 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
8ca151b5
JB		 3061 ctx->rx_chains_static,
3062 ctx->rx_chains_dynamic);
3063 mutex_unlock(&mvm->mutex);
3064}
3065
b08c1d97
LC		 3066static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3067 struct ieee80211_vif *vif,
f0c97783
LC		 3068 struct ieee80211_chanctx_conf *ctx,
3069 bool switching_chanctx)
8ca151b5 3070{
fe0f2de3
IP		 3071 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3072 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 3073 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3074 int ret;
3075
b08c1d97 3076 lockdep_assert_held(&mvm->mutex);
8ca151b5 3077
fe0f2de3 3078 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 3079
3080 switch (vif->type) {
3081 case NL80211_IFTYPE_AP:
4741dd04
LC		 3082 /* only needed if we're switching chanctx (i.e. during CSA) */
3083 if (switching_chanctx) {
bd3398e2
AO		 3084 mvmvif->ap_ibss_active = true;
3085 break;
3086 }
5023d966 3087 case NL80211_IFTYPE_ADHOC:
8ca151b5
JB		 3088 /*
3089 * The AP binding flow is handled as part of the start_ap flow
5023d966 3090 * (in bss_info_changed), similarly for IBSS.
8ca151b5
JB		 3091 */
3092 ret = 0;
b08c1d97 3093 goto out;
8ca151b5 3094 case NL80211_IFTYPE_STATION:
2533edce 3095 break;
8ca151b5 3096 case NL80211_IFTYPE_MONITOR:
2533edce
LC		 3097 /* always disable PS when a monitor interface is active */
3098 mvmvif->ps_disabled = true;
8ca151b5
JB		 3099 break;
3100 default:
3101 ret = -EINVAL;
b08c1d97 3102 goto out;
8ca151b5
JB		 3103 }
3104
3105 ret = iwl_mvm_binding_add_vif(mvm, vif);
3106 if (ret)
b08c1d97 3107 goto out;
8ca151b5
JB		 3108
3109 /*
92d85562
AB		 3110 * Power state must be updated before quotas,
3111 * otherwise fw will complain.
3112 */
999609f1 3113 iwl_mvm_power_update_mac(mvm);
92d85562
AB		 3114
3115 /* Setting the quota at this stage is only required for monitor
8ca151b5
JB		 3116 * interfaces. For the other types, the bss_info changed flow
3117 * will handle quota settings.
3118 */
3119 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 3120 mvmvif->monitor_active = true;
7754ae79 3121 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5
JB		 3122 if (ret)
3123 goto out_remove_binding;
3124 }
3125
bd3398e2 3126 /* Handle binding during CSA */
a57c688d 3127 if (vif->type == NL80211_IFTYPE_AP) {
7754ae79 3128 iwl_mvm_update_quotas(mvm, false, NULL);
3dfd3a97 3129 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
bd3398e2
AO		 3130 }
3131
4741dd04 3132 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
686e7fe1
LC		 3133 u32 duration = 2 * vif->bss_conf.beacon_int;
3134
3135 /* iwl_mvm_protect_session() reads directly from the
3136 * device (the system time), so make sure it is
3137 * available.
3138 */
3139 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3140 if (ret)
3141 goto out_remove_binding;
3142
3143 /* Protect the session to make sure we hear the first
3144 * beacon on the new channel.
3145 */
3146 iwl_mvm_protect_session(mvm, vif, duration, duration,
3147 vif->bss_conf.beacon_int / 2,
3148 true);
3149
3150 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3151
7754ae79 3152 iwl_mvm_update_quotas(mvm, false, NULL);
0ce04ce7
LC		 3153 }
3154
b08c1d97 3155 goto out;
8ca151b5 3156
b08c1d97 3157out_remove_binding:
8ca151b5 3158 iwl_mvm_binding_remove_vif(mvm, vif);
999609f1 3159 iwl_mvm_power_update_mac(mvm);
b08c1d97 3160out:
8ca151b5
JB		 3161 if (ret)
3162 mvmvif->phy_ctxt = NULL;
3163 return ret;
3164}
b08c1d97
LC		 3165static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3166 struct ieee80211_vif *vif,
3167 struct ieee80211_chanctx_conf *ctx)
8ca151b5
JB		 3168{
3169 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
b08c1d97 3170 int ret;
8ca151b5
JB		 3171
3172 mutex_lock(&mvm->mutex);
f0c97783 3173 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
b08c1d97
LC		 3174 mutex_unlock(&mvm->mutex);
3175
3176 return ret;
3177}
3178
3179static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3180 struct ieee80211_vif *vif,
f0c97783
LC		 3181 struct ieee80211_chanctx_conf *ctx,
3182 bool switching_chanctx)
b08c1d97
LC		 3183{
3184 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
f0c97783 3185 struct ieee80211_vif *disabled_vif = NULL;
b08c1d97
LC		 3186
3187 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 3188
3189 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3190
8ca151b5 3191 switch (vif->type) {
5023d966 3192 case NL80211_IFTYPE_ADHOC:
b08c1d97 3193 goto out;
8ca151b5 3194 case NL80211_IFTYPE_MONITOR:
1e1391ca 3195 mvmvif->monitor_active = false;
2533edce 3196 mvmvif->ps_disabled = false;
8ca151b5 3197 break;
bd3398e2
AO		 3198 case NL80211_IFTYPE_AP:
3199 /* This part is triggered only during CSA */
4741dd04 3200 if (!switching_chanctx || !mvmvif->ap_ibss_active)
b08c1d97 3201 goto out;
bd3398e2 3202
7ef0aab6
AO		 3203 mvmvif->csa_countdown = false;
3204
003e5236
AO		 3205 /* Set CS bit on all the stations */
3206 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3207
3208 /* Save blocked iface, the timeout is set on the next beacon */
3209 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3210
bd3398e2 3211 mvmvif->ap_ibss_active = false;
f0c97783
LC		 3212 break;
3213 case NL80211_IFTYPE_STATION:
3214 if (!switching_chanctx)
3215 break;
3216
3217 disabled_vif = vif;
3218
3dfd3a97 3219 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
f0c97783 3220 break;
8ca151b5
JB		 3221 default:
3222 break;
3223 }
3224
7754ae79 3225 iwl_mvm_update_quotas(mvm, false, disabled_vif);
1e1391ca 3226 iwl_mvm_binding_remove_vif(mvm, vif);
1c2abf72 3227
b08c1d97 3228out:
a11e144e 3229 mvmvif->phy_ctxt = NULL;
999609f1 3230 iwl_mvm_power_update_mac(mvm);
b08c1d97
LC		 3231}
3232
3233static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3234 struct ieee80211_vif *vif,
3235 struct ieee80211_chanctx_conf *ctx)
3236{
3237 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3238
3239 mutex_lock(&mvm->mutex);
f0c97783 3240 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
8ca151b5
JB		 3241 mutex_unlock(&mvm->mutex);
3242}
3243
50cc9574
LC		 3244static int
3245iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3246 struct ieee80211_vif_chanctx_switch *vifs)
b08c1d97 3247{
b08c1d97
LC		 3248 int ret;
3249
b08c1d97 3250 mutex_lock(&mvm->mutex);
f0c97783 3251 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
b08c1d97
LC		 3252 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3253
3254 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3255 if (ret) {
3256 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3257 goto out_reassign;
3258 }
3259
f0c97783
LC		 3260 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3261 true);
b08c1d97
LC		 3262 if (ret) {
3263 IWL_ERR(mvm,
3264 "failed to assign new_ctx during channel switch\n");
3265 goto out_remove;
3266 }
3267
f697267f
AN		 3268 /* we don't support TDLS during DCM - can be caused by channel switch */
3269 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3270 iwl_mvm_teardown_tdls_peers(mvm);
3271
b08c1d97
LC		 3272 goto out;
3273
3274out_remove:
3275 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3276
3277out_reassign:
6fd1fb63 3278 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
b08c1d97
LC		 3279 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3280 goto out_restart;
3281 }
3282
6fd1fb63
LC		 3283 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3284 true)) {
b08c1d97
LC		 3285 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3286 goto out_restart;
3287 }
3288
3289 goto out;
3290
3291out_restart:
3292 /* things keep failing, better restart the hw */
3293 iwl_mvm_nic_restart(mvm, false);
3294
3295out:
3296 mutex_unlock(&mvm->mutex);
50cc9574
LC		 3297
3298 return ret;
3299}
3300
48a256e8
LC		 3301static int
3302iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3303 struct ieee80211_vif_chanctx_switch *vifs)
3304{
3305 int ret;
3306
3307 mutex_lock(&mvm->mutex);
3308 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3309
3310 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3311 true);
3312 if (ret) {
3313 IWL_ERR(mvm,
3314 "failed to assign new_ctx during channel switch\n");
3315 goto out_reassign;
3316 }
3317
3318 goto out;
3319
3320out_reassign:
3321 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3322 true)) {
3323 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3324 goto out_restart;
3325 }
3326
3327 goto out;
3328
3329out_restart:
3330 /* things keep failing, better restart the hw */
3331 iwl_mvm_nic_restart(mvm, false);
3332
3333out:
3334 mutex_unlock(&mvm->mutex);
3335
3336 return ret;
3337}
3338
50cc9574
LC		 3339static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3340 struct ieee80211_vif_chanctx_switch *vifs,
3341 int n_vifs,
3342 enum ieee80211_chanctx_switch_mode mode)
3343{
3344 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3345 int ret;
3346
3347 /* we only support a single-vif right now */
3348 if (n_vifs > 1)
3349 return -EOPNOTSUPP;
3350
3351 switch (mode) {
3352 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3353 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3354 break;
3355 case CHANCTX_SWMODE_REASSIGN_VIF:
48a256e8 3356 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
50cc9574
LC		 3357 break;
3358 default:
3359 ret = -EOPNOTSUPP;
3360 break;
3361 }
3362
b08c1d97
LC		 3363 return ret;
3364}
3365
8ca151b5
JB		 3366static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3367 struct ieee80211_sta *sta,
3368 bool set)
3369{
3370 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
9d8ce6af 3371 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 3372
3373 if (!mvm_sta || !mvm_sta->vif) {
3374 IWL_ERR(mvm, "Station is not associated to a vif\n");
3375 return -EINVAL;
3376 }
3377
3378 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3379}
3380
507cadf2
DS		 3381#ifdef CONFIG_NL80211_TESTMODE
3382static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3383 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3384 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
f6c6ad42 3385 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
507cadf2
DS		 3386};
3387
3388static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3389 struct ieee80211_vif *vif,
3390 void *data, int len)
3391{
3392 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3393 int err;
3394 u32 noa_duration;
3395
3396 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3397 if (err)
3398 return err;
3399
3400 if (!tb[IWL_MVM_TM_ATTR_CMD])
3401 return -EINVAL;
3402
3403 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3404 case IWL_MVM_TM_CMD_SET_NOA:
3405 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3406 !vif->bss_conf.enable_beacon ||
3407 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3408 return -EINVAL;
3409
3410 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3411 if (noa_duration >= vif->bss_conf.beacon_int)
3412 return -EINVAL;
3413
3414 mvm->noa_duration = noa_duration;
3415 mvm->noa_vif = vif;
3416
7754ae79 3417 return iwl_mvm_update_quotas(mvm, false, NULL);
f6c6ad42
JB		 3418 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3419 /* must be associated client vif - ignore authorized */
3420 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3421 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3422 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3423 return -EINVAL;
3424
3425 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
a1022927
EG		 3426 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3427 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
507cadf2
DS		 3428 }
3429
3430 return -EOPNOTSUPP;
3431}
3432
3433static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3434 struct ieee80211_vif *vif,
3435 void *data, int len)
3436{
3437 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3438 int err;
3439
3440 mutex_lock(&mvm->mutex);
3441 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3442 mutex_unlock(&mvm->mutex);
3443
3444 return err;
3445}
3446#endif
3447
622e3f9b
LC		 3448static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3449 struct ieee80211_vif *vif,
3450 struct ieee80211_channel_switch *chsw)
3451{
3452 /* By implementing this operation, we prevent mac80211 from
3453 * starting its own channel switch timer, so that we can call
3454 * ieee80211_chswitch_done() ourselves at the right time
3455 * (which is when the absence time event starts).
3456 */
3457
3458 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3459 "dummy channel switch op\n");
3460}
3461
f028905c
LC		 3462static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3463 struct ieee80211_vif *vif,
3464 struct ieee80211_channel_switch *chsw)
bd3398e2
AO		 3465{
3466 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
664322fa 3467 struct ieee80211_vif *csa_vif;
f6c34820 3468 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
dc88b4ba 3469 u32 apply_time;
f028905c 3470 int ret;
bd3398e2
AO		 3471
3472 mutex_lock(&mvm->mutex);
664322fa 3473
81d62d5a
JB		 3474 mvmvif->csa_failed = false;
3475
6b20d774 3476 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
f028905c 3477 chsw->chandef.center_freq1);
6b20d774 3478
21023b1e 3479 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
f35d9c55 3480
6b20d774
LC		 3481 switch (vif->type) {
3482 case NL80211_IFTYPE_AP:
3483 csa_vif =
3484 rcu_dereference_protected(mvm->csa_vif,
3485 lockdep_is_held(&mvm->mutex));
3486 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3487 "Another CSA is already in progress")) {
3488 ret = -EBUSY;
3489 goto out_unlock;
3490 }
3491
3492 rcu_assign_pointer(mvm->csa_vif, vif);
7ef0aab6 3493
7ef0aab6
AO		 3494 if (WARN_ONCE(mvmvif->csa_countdown,
3495 "Previous CSA countdown didn't complete")) {
3496 ret = -EBUSY;
3497 goto out_unlock;
3498 }
3499
6b20d774 3500 break;
dc88b4ba 3501 case NL80211_IFTYPE_STATION:
4500e133
LC		 3502 /* Schedule the time event to a bit before beacon 1,
3503 * to make sure we're in the new channel when the
3504 * GO/AP arrives.
3505 */
3506 apply_time = chsw->device_timestamp +
3507 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3508 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
dc88b4ba
LC		 3509
3510 if (chsw->block_tx)
3511 iwl_mvm_csa_client_absent(mvm, vif);
3512
4500e133 3513 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
dc88b4ba 3514 apply_time);
c6e0a3e0
LC		 3515 if (mvmvif->bf_data.bf_enabled) {
3516 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3517 if (ret)
3518 goto out_unlock;
3519 }
3520
dc88b4ba 3521 break;
6b20d774
LC		 3522 default:
3523 break;
3524 }
bd3398e2 3525
f6c34820
LC		 3526 mvmvif->ps_disabled = true;
3527
3528 ret = iwl_mvm_power_update_ps(mvm);
3529 if (ret)
3530 goto out_unlock;
f028905c 3531
e198f5e7
AN		 3532 /* we won't be on this channel any longer */
3533 iwl_mvm_teardown_tdls_peers(mvm);
3534
bd3398e2
AO		 3535out_unlock:
3536 mutex_unlock(&mvm->mutex);
f028905c
LC		 3537
3538 return ret;
bd3398e2
AO		 3539}
3540
f6c34820
LC		 3541static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3542 struct ieee80211_vif *vif)
3543{
3544 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3545 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3546 int ret;
3547
3548 mutex_lock(&mvm->mutex);
3549
81d62d5a
JB		 3550 if (mvmvif->csa_failed) {
3551 mvmvif->csa_failed = false;
3552 ret = -EIO;
3553 goto out_unlock;
3554 }
3555
a57c688d
LC		 3556 if (vif->type == NL80211_IFTYPE_STATION) {
3557 struct iwl_mvm_sta *mvmsta;
3558
3559 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3560 mvmvif->ap_sta_id);
3561
3562 if (WARN_ON(!mvmsta)) {
3563 ret = -EIO;
3564 goto out_unlock;
3565 }
3566
3567 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3568
3569 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
c6e0a3e0
LC		 3570
3571 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3572 if (ret)
3573 goto out_unlock;
686e7fe1
LC		 3574
3575 iwl_mvm_stop_session_protection(mvm, vif);
a57c688d
LC		 3576 }
3577
f6c34820
LC		 3578 mvmvif->ps_disabled = false;
3579
3580 ret = iwl_mvm_power_update_ps(mvm);
3581
a57c688d 3582out_unlock:
f6c34820
LC		 3583 mutex_unlock(&mvm->mutex);
3584
3585 return ret;
3586}
3587
c5b0e7c0
EG		 3588static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3589 struct ieee80211_vif *vif, u32 queues, bool drop)
3590{
3591 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3592 struct iwl_mvm_vif *mvmvif;
3593 struct iwl_mvm_sta *mvmsta;
a0f6bf2a
AN		 3594 struct ieee80211_sta *sta;
3595 int i;
3596 u32 msk = 0;
c5b0e7c0
EG		 3597
3598 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3599 return;
3600
3601 mutex_lock(&mvm->mutex);
3602 mvmvif = iwl_mvm_vif_from_mac80211(vif);
c5b0e7c0 3603
a0f6bf2a
AN		 3604 /* flush the AP-station and all TDLS peers */
3605 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3606 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3607 lockdep_is_held(&mvm->mutex));
3608 if (IS_ERR_OR_NULL(sta))
3609 continue;
3610
3611 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3612 if (mvmsta->vif != vif)
3613 continue;
3614
3615 /* make sure only TDLS peers or the AP are flushed */
3616 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3617
3618 msk |= mvmsta->tfd_queue_msk;
480acbce 3619 }
c5b0e7c0 3620
6d440b25 3621 if (drop) {
5888a40c 3622 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
6d440b25
EG		 3623 IWL_ERR(mvm, "flush request fail\n");
3624 mutex_unlock(&mvm->mutex);
3625 } else {
3626 mutex_unlock(&mvm->mutex);
4e6c48e0 3627
6d440b25
EG		 3628 /* this can take a while, and we may need/want other operations
3629 * to succeed while doing this, so do it without the mutex held
3630 */
3631 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3632 }
c5b0e7c0
EG		 3633}
3634
91a8bcde
JB		 3635static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3636 struct survey_info *survey)
3637{
3638 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3639 int ret;
3640
3641 memset(survey, 0, sizeof(*survey));
3642
3643 /* only support global statistics right now */
3644 if (idx != 0)
3645 return -ENOENT;
3646
859d914c 3647 if (fw_has_capa(&mvm->fw->ucode_capa,
91a8bcde
JB		 3648 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3649 return -ENOENT;
3650
3651 mutex_lock(&mvm->mutex);
3652
3653 if (mvm->ucode_loaded) {
33cef925 3654 ret = iwl_mvm_request_statistics(mvm, false);
91a8bcde
JB		 3655 if (ret)
3656 goto out;
3657 }
3658
3659 survey->filled = SURVEY_INFO_TIME |
3660 SURVEY_INFO_TIME_RX |
3661 SURVEY_INFO_TIME_TX |
3662 SURVEY_INFO_TIME_SCAN;
3663 survey->time = mvm->accu_radio_stats.on_time_rf +
3664 mvm->radio_stats.on_time_rf;
3665 do_div(survey->time, USEC_PER_MSEC);
3666
3667 survey->time_rx = mvm->accu_radio_stats.rx_time +
3668 mvm->radio_stats.rx_time;
3669 do_div(survey->time_rx, USEC_PER_MSEC);
3670
3671 survey->time_tx = mvm->accu_radio_stats.tx_time +
3672 mvm->radio_stats.tx_time;
3673 do_div(survey->time_tx, USEC_PER_MSEC);
3674
3675 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3676 mvm->radio_stats.on_time_scan;
3677 do_div(survey->time_scan, USEC_PER_MSEC);
3678
10a7c028 3679 ret = 0;
91a8bcde
JB		 3680 out:
3681 mutex_unlock(&mvm->mutex);
3682 return ret;
3683}
3684
33cef925
JB		 3685static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3686 struct ieee80211_vif *vif,
3687 struct ieee80211_sta *sta,
3688 struct station_info *sinfo)
3689{
3690 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3691 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3692 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3693
859d914c
JB		 3694 if (fw_has_capa(&mvm->fw->ucode_capa,
3695 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
33cef925
JB		 3696 return;
3697
3698 /* if beacon filtering isn't on mac80211 does it anyway */
3699 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3700 return;
3701
3702 if (!vif->bss_conf.assoc)
3703 return;
3704
3705 mutex_lock(&mvm->mutex);
3706
3707 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3708 goto unlock;
3709
3710 if (iwl_mvm_request_statistics(mvm, false))
3711 goto unlock;
3712
3713 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3714 mvmvif->beacon_stats.accu_num_beacons;
3715 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3716 if (mvmvif->beacon_stats.avg_signal) {
3717 /* firmware only reports a value after RXing a few beacons */
3718 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3719 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3720 }
3721 unlock:
3722 mutex_unlock(&mvm->mutex);
3723}
3724
4203263d
EG		 3725static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3726 struct ieee80211_vif *vif,
3727 const struct ieee80211_event *event)
d42f5350 3728{
5d4f929e 3729#define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
d42f5350
EG		 3730 do { \
3731 if ((_cnt) && --(_cnt)) \
3732 break; \
5d4f929e 3733 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
d42f5350
EG		 3734 } while (0)
3735
d42f5350
EG		 3736 struct iwl_fw_dbg_trigger_tlv *trig;
3737 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
d42f5350
EG		 3738
3739 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3740 return;
3741
d42f5350
EG		 3742 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3743 trig_mlme = (void *)trig->data;
3744 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3745 return;
3746
d42f5350
EG		 3747 if (event->u.mlme.data == ASSOC_EVENT) {
3748 if (event->u.mlme.status == MLME_DENIED)
3749 CHECK_MLME_TRIGGER(mvm, trig, buf,
3750 trig_mlme->stop_assoc_denied,
3751 "DENIED ASSOC: reason %d",
3752 event->u.mlme.reason);
3753 else if (event->u.mlme.status == MLME_TIMEOUT)
3754 CHECK_MLME_TRIGGER(mvm, trig, buf,
3755 trig_mlme->stop_assoc_timeout,
3756 "ASSOC TIMEOUT");
3757 } else if (event->u.mlme.data == AUTH_EVENT) {
3758 if (event->u.mlme.status == MLME_DENIED)
3759 CHECK_MLME_TRIGGER(mvm, trig, buf,
3760 trig_mlme->stop_auth_denied,
3761 "DENIED AUTH: reason %d",
3762 event->u.mlme.reason);
3763 else if (event->u.mlme.status == MLME_TIMEOUT)
3764 CHECK_MLME_TRIGGER(mvm, trig, buf,
3765 trig_mlme->stop_auth_timeout,
3766 "AUTH TIMEOUT");
3767 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3768 CHECK_MLME_TRIGGER(mvm, trig, buf,
3769 trig_mlme->stop_rx_deauth,
3770 "DEAUTH RX %d", event->u.mlme.reason);
3771 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3772 CHECK_MLME_TRIGGER(mvm, trig, buf,
3773 trig_mlme->stop_tx_deauth,
3774 "DEAUTH TX %d", event->u.mlme.reason);
3775 }
3776#undef CHECK_MLME_TRIGGER
3777}
3778
4203263d
EG		 3779static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3780 struct ieee80211_vif *vif,
3781 const struct ieee80211_event *event)
3782{
3783 struct iwl_fw_dbg_trigger_tlv *trig;
3784 struct iwl_fw_dbg_trigger_ba *ba_trig;
3785
3786 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3787 return;
3788
3789 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3790 ba_trig = (void *)trig->data;
3791 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3792 return;
3793
3794 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3795 return;
3796
3797 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3798 "BAR received from %pM, tid %d, ssn %d",
3799 event->u.ba.sta->addr, event->u.ba.tid,
3800 event->u.ba.ssn);
3801}
3802
3803static void
3804iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3805 struct ieee80211_vif *vif,
3806 const struct ieee80211_event *event)
3807{
3808 struct iwl_fw_dbg_trigger_tlv *trig;
3809 struct iwl_fw_dbg_trigger_ba *ba_trig;
3810
3811 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3812 return;
3813
3814 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3815 ba_trig = (void *)trig->data;
3816 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3817 return;
3818
3819 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3820 return;
3821
3822 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3823 "Frame from %pM timed out, tid %d",
3824 event->u.ba.sta->addr, event->u.ba.tid);
3825}
3826
3827static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3828 struct ieee80211_vif *vif,
3829 const struct ieee80211_event *event)
3830{
3831 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3832
3833 switch (event->type) {
3834 case MLME_EVENT:
3835 iwl_mvm_event_mlme_callback(mvm, vif, event);
3836 break;
3837 case BAR_RX_EVENT:
3838 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3839 break;
3840 case BA_FRAME_TIMEOUT:
3841 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3842 break;
3843 default:
3844 break;
3845 }
3846}
3847
e5209263 3848const struct ieee80211_ops iwl_mvm_hw_ops = {
8ca151b5
JB		 3849 .tx = iwl_mvm_mac_tx,
3850 .ampdu_action = iwl_mvm_mac_ampdu_action,
3851 .start = iwl_mvm_mac_start,
cf2c92d8 3852 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
8ca151b5
JB		 3853 .stop = iwl_mvm_mac_stop,
3854 .add_interface = iwl_mvm_mac_add_interface,
3855 .remove_interface = iwl_mvm_mac_remove_interface,
3856 .config = iwl_mvm_mac_config,
e59647ea 3857 .prepare_multicast = iwl_mvm_prepare_multicast,
8ca151b5 3858 .configure_filter = iwl_mvm_configure_filter,
effd1929 3859 .config_iface_filter = iwl_mvm_config_iface_filter,
8ca151b5
JB		 3860 .bss_info_changed = iwl_mvm_bss_info_changed,
3861 .hw_scan = iwl_mvm_mac_hw_scan,
3862 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1ddbbb0c 3863 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
8ca151b5
JB		 3864 .sta_state = iwl_mvm_mac_sta_state,
3865 .sta_notify = iwl_mvm_mac_sta_notify,
3866 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3e56eadf 3867 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
8ca151b5 3868 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1f3b0ff8 3869 .sta_rc_update = iwl_mvm_sta_rc_update,
8ca151b5
JB		 3870 .conf_tx = iwl_mvm_mac_conf_tx,
3871 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
07ecd897 3872 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
c5b0e7c0 3873 .flush = iwl_mvm_mac_flush,
35a000b7
DS		 3874 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3875 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
8ca151b5
JB		 3876 .set_key = iwl_mvm_mac_set_key,
3877 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3878 .remain_on_channel = iwl_mvm_roc,
3879 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
8ca151b5
JB		 3880 .add_chanctx = iwl_mvm_add_chanctx,
3881 .remove_chanctx = iwl_mvm_remove_chanctx,
3882 .change_chanctx = iwl_mvm_change_chanctx,
3883 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3884 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
b08c1d97 3885 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
8ca151b5 3886
5023d966
JB		 3887 .start_ap = iwl_mvm_start_ap_ibss,
3888 .stop_ap = iwl_mvm_stop_ap_ibss,
3889 .join_ibss = iwl_mvm_start_ap_ibss,
3890 .leave_ibss = iwl_mvm_stop_ap_ibss,
8ca151b5
JB		 3891
3892 .set_tim = iwl_mvm_set_tim,
3893
622e3f9b 3894 .channel_switch = iwl_mvm_channel_switch,
f028905c 3895 .pre_channel_switch = iwl_mvm_pre_channel_switch,
f6c34820 3896 .post_channel_switch = iwl_mvm_post_channel_switch,
bd3398e2 3897
1d3c3f63
AN		 3898 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3899 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3900 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3901
d42f5350
EG		 3902 .event_callback = iwl_mvm_mac_event_callback,
3903
507cadf2
DS		 3904 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3905
8ca151b5
JB		 3906#ifdef CONFIG_PM_SLEEP
3907 /* look at d3.c */
3908 .suspend = iwl_mvm_suspend,
3909 .resume = iwl_mvm_resume,
3910 .set_wakeup = iwl_mvm_set_wakeup,
3911 .set_rekey_data = iwl_mvm_set_rekey_data,
3912#if IS_ENABLED(CONFIG_IPV6)
3913 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3914#endif
3915 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3916#endif
91a8bcde 3917 .get_survey = iwl_mvm_mac_get_survey,
33cef925 3918 .sta_statistics = iwl_mvm_mac_sta_statistics,
8ca151b5 3919};
Linux 6.x block layer and io_uring tree(s)