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iwlwifi: mvm: add extended dwell time
[deliverable/linux.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:
cb2f8277 29 * Intel Linux Wireless <linuxwifi@intel.com>
8ca151b5
JB		 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
41837ca9 670 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
a3713f8b
EG		 671 hw->netdev_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
672 NETIF_F_TSO | NETIF_F_TSO6;
41837ca9 673
b7327d89
EG		 674 ret = ieee80211_register_hw(mvm->hw);
675 if (ret)
676 iwl_mvm_leds_exit(mvm);
677
678 return ret;
8ca151b5
JB		 679}
680
b2492501
AN		 681static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
682 struct ieee80211_sta *sta,
683 struct sk_buff *skb)
684{
685 struct iwl_mvm_sta *mvmsta;
686 bool defer = false;
687
688 /*
689 * double check the IN_D0I3 flag both before and after
690 * taking the spinlock, in order to prevent taking
691 * the spinlock when not needed.
692 */
693 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
694 return false;
695
696 spin_lock(&mvm->d0i3_tx_lock);
697 /*
698 * testing the flag again ensures the skb dequeue
699 * loop (on d0i3 exit) hasn't run yet.
700 */
701 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
702 goto out;
703
704 mvmsta = iwl_mvm_sta_from_mac80211(sta);
705 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
706 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
707 goto out;
708
709 __skb_queue_tail(&mvm->d0i3_tx, skb);
710 ieee80211_stop_queues(mvm->hw);
711
712 /* trigger wakeup */
713 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
714 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
715
716 defer = true;
717out:
718 spin_unlock(&mvm->d0i3_tx_lock);
719 return defer;
720}
721
8ca151b5
JB		 722static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
723 struct ieee80211_tx_control *control,
724 struct sk_buff *skb)
725{
726 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3e56eadf
JB		 727 struct ieee80211_sta *sta = control->sta;
728 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
729 struct ieee80211_hdr *hdr = (void *)skb->data;
8ca151b5 730
9ee718aa
EL		 731 if (iwl_mvm_is_radio_killed(mvm)) {
732 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
8ca151b5
JB		 733 goto drop;
734 }
735
398e8c6c 736 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
a6cc5163
MG		 737 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
738 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
8ca151b5
JB		 739 goto drop;
740
3e56eadf
JB		 741 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
742 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
743 ieee80211_is_mgmt(hdr->frame_control) &&
744 !ieee80211_is_deauth(hdr->frame_control) &&
745 !ieee80211_is_disassoc(hdr->frame_control) &&
746 !ieee80211_is_action(hdr->frame_control)))
747 sta = NULL;
748
749 if (sta) {
b2492501
AN		 750 if (iwl_mvm_defer_tx(mvm, sta, skb))
751 return;
3e56eadf 752 if (iwl_mvm_tx_skb(mvm, skb, sta))
8ca151b5
JB		 753 goto drop;
754 return;
755 }
756
757 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
758 goto drop;
759 return;
760 drop:
761 ieee80211_free_txskb(hw, skb);
762}
763
205e2210
EG		 764static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
765{
766 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
767 return false;
768 return true;
769}
770
771static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
772{
773 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
774 return false;
775 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
776 return true;
777
778 /* enabled by default */
779 return true;
780}
781
4203263d
EG		 782#define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
783 do { \
784 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
785 break; \
786 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
787 } while (0)
788
789static void
790iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
791 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
792 enum ieee80211_ampdu_mlme_action action)
793{
794 struct iwl_fw_dbg_trigger_tlv *trig;
795 struct iwl_fw_dbg_trigger_ba *ba_trig;
796
797 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
798 return;
799
800 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
801 ba_trig = (void *)trig->data;
802
803 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
804 return;
805
806 switch (action) {
807 case IEEE80211_AMPDU_TX_OPERATIONAL: {
808 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
809 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
810
811 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
812 "TX AGG START: MAC %pM tid %d ssn %d\n",
813 sta->addr, tid, tid_data->ssn);
814 break;
815 }
816 case IEEE80211_AMPDU_TX_STOP_CONT:
817 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
818 "TX AGG STOP: MAC %pM tid %d\n",
819 sta->addr, tid);
820 break;
821 case IEEE80211_AMPDU_RX_START:
822 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
823 "RX AGG START: MAC %pM tid %d ssn %d\n",
824 sta->addr, tid, rx_ba_ssn);
825 break;
826 case IEEE80211_AMPDU_RX_STOP:
827 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
828 "RX AGG STOP: MAC %pM tid %d\n",
829 sta->addr, tid);
830 break;
831 default:
832 break;
833 }
834}
835
8ca151b5
JB		 836static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
837 struct ieee80211_vif *vif,
838 enum ieee80211_ampdu_mlme_action action,
839 struct ieee80211_sta *sta, u16 tid,
e3abc8ff 840 u16 *ssn, u8 buf_size, bool amsdu)
8ca151b5
JB		 841{
842 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
843 int ret;
b2492501 844 bool tx_agg_ref = false;
8ca151b5
JB		 845
846 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
847 sta->addr, tid, action);
848
849 if (!(mvm->nvm_data->sku_cap_11n_enable))
850 return -EACCES;
851
b2492501 852 /* return from D0i3 before starting a new Tx aggregation */
9256c205
EP		 853 switch (action) {
854 case IEEE80211_AMPDU_TX_START:
855 case IEEE80211_AMPDU_TX_STOP_CONT:
856 case IEEE80211_AMPDU_TX_STOP_FLUSH:
857 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
858 case IEEE80211_AMPDU_TX_OPERATIONAL:
b2492501 859 /*
9256c205
EP		 860 * for tx start, wait synchronously until D0i3 exit to
861 * get the correct sequence number for the tid.
862 * additionally, some other ampdu actions use direct
863 * target access, which is not handled automatically
864 * by the trans layer (unlike commands), so wait for
865 * d0i3 exit in these cases as well.
b2492501 866 */
d40fc489
GG		 867 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
868 if (ret)
869 return ret;
870
871 tx_agg_ref = true;
9256c205
EP		 872 break;
873 default:
874 break;
b2492501
AN		 875 }
876
8ca151b5
JB		 877 mutex_lock(&mvm->mutex);
878
879 switch (action) {
880 case IEEE80211_AMPDU_RX_START:
205e2210 881 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
8ca151b5
JB		 882 ret = -EINVAL;
883 break;
884 }
885 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
886 break;
887 case IEEE80211_AMPDU_RX_STOP:
888 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
889 break;
890 case IEEE80211_AMPDU_TX_START:
205e2210 891 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
5d158efa
EG		 892 ret = -EINVAL;
893 break;
894 }
8ca151b5
JB		 895 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
896 break;
897 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 898 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
899 break;
8ca151b5
JB		 900 case IEEE80211_AMPDU_TX_STOP_FLUSH:
901 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 902 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 903 break;
904 case IEEE80211_AMPDU_TX_OPERATIONAL:
905 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
906 break;
907 default:
908 WARN_ON_ONCE(1);
909 ret = -EINVAL;
910 break;
911 }
4203263d
EG		 912
913 if (!ret) {
914 u16 rx_ba_ssn = 0;
915
916 if (action == IEEE80211_AMPDU_RX_START)
917 rx_ba_ssn = *ssn;
918
919 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
920 rx_ba_ssn, action);
921 }
8ca151b5
JB		 922 mutex_unlock(&mvm->mutex);
923
b2492501
AN		 924 /*
925 * If the tid is marked as started, we won't use it for offloaded
926 * traffic on the next D0i3 entry. It's safe to unref.
927 */
928 if (tx_agg_ref)
929 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
930
8ca151b5
JB		 931 return ret;
932}
933
934static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
935 struct ieee80211_vif *vif)
936{
937 struct iwl_mvm *mvm = data;
938 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
939
940 mvmvif->uploaded = false;
941 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
942
8ca151b5
JB		 943 spin_lock_bh(&mvm->time_event_lock);
944 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
945 spin_unlock_bh(&mvm->time_event_lock);
946
fe0f2de3 947 mvmvif->phy_ctxt = NULL;
8a275bad 948 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
8ca151b5
JB		 949}
950
951static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
952{
58629d9d
JB		 953 /* clear the D3 reconfig, we only need it to avoid dumping a
954 * firmware coredump on reconfiguration, we shouldn't do that
955 * on D3->D0 transition
956 */
b6eaa45a
EG		 957 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
958 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
58629d9d 959 iwl_mvm_fw_error_dump(mvm);
b6eaa45a 960 }
1bd3cbc1 961
744cb695
EP		 962 /* cleanup all stale references (scan, roc), but keep the
963 * ucode_down ref until reconfig is complete
964 */
965 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
966
8ca151b5 967 iwl_trans_stop_device(mvm->trans);
8ca151b5 968
9af91f46 969 mvm->scan_status = 0;
b1873300 970 mvm->ps_disabled = false;
31b8b343 971 mvm->calibrating = false;
8ca151b5
JB		 972
973 /* just in case one was running */
305d236e 974 iwl_mvm_cleanup_roc_te(mvm);
8ca151b5
JB		 975 ieee80211_remain_on_channel_expired(mvm->hw);
976
737719fe
AN		 977 /*
978 * cleanup all interfaces, even inactive ones, as some might have
979 * gone down during the HW restart
980 */
981 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
8ca151b5 982
fe0f2de3 983 mvm->p2p_device_vif = NULL;
37577fe2 984 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
fe0f2de3
IP		 985
986 iwl_mvm_reset_phy_ctxts(mvm);
9c3deeb5 987 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
8ca151b5 988 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
a0f6bf2a 989 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
8a275bad
EG		 990 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
991 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
992 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
993 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
994 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
995 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
8ca151b5
JB		 996
997 ieee80211_wake_queues(mvm->hw);
998
228670b2
EP		 999 /* clear any stale d0i3 state */
1000 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1001
8ca151b5 1002 mvm->vif_count = 0;
113a0447 1003 mvm->rx_ba_sessions = 0;
d2709ad7 1004 mvm->fw_dbg_conf = FW_DBG_INVALID;
355346ba 1005 mvm->scan_type = IWL_SCAN_TYPE_NOT_SET;
91a8bcde
JB		 1006
1007 /* keep statistics ticking */
1008 iwl_mvm_accu_radio_stats(mvm);
8ca151b5
JB		 1009}
1010
a0a09243 1011int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
8ca151b5 1012{
8ca151b5
JB		 1013 int ret;
1014
a0a09243 1015 lockdep_assert_held(&mvm->mutex);
8ca151b5 1016
a42b2af3
LC		 1017 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1018 /* Clean up some internal and mac80211 state on restart */
8ca151b5 1019 iwl_mvm_restart_cleanup(mvm);
a42b2af3
LC		 1020 } else {
1021 /* Hold the reference to prevent runtime suspend while
1022 * the start procedure runs. It's a bit confusing
1023 * that the UCODE_DOWN reference is taken, but it just
1024 * means "UCODE is not UP yet". ( TODO: rename this
1025 * reference).
1026 */
1027 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1028 }
8ca151b5 1029 ret = iwl_mvm_up(mvm);
c47af22a
JB		 1030
1031 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1032 /* Something went wrong - we need to finish some cleanup
1033 * that normally iwl_mvm_mac_restart_complete() below
1034 * would do.
1035 */
1036 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1037 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1038 }
1039
a0a09243
LC		 1040 return ret;
1041}
1042
1043static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1044{
1045 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1046 int ret;
1047
37948fcf
EP		 1048 /* Some hw restart cleanups must not hold the mutex */
1049 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1050 /*
1051 * Make sure we are out of d0i3. This is needed
1052 * to make sure the reference accounting is correct
1053 * (and there is no stale d0i3_exit_work).
1054 */
1055 wait_event_timeout(mvm->d0i3_exit_waitq,
1056 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1057 &mvm->status),
1058 HZ);
1059 }
1060
a0a09243
LC		 1061 mutex_lock(&mvm->mutex);
1062 ret = __iwl_mvm_mac_start(mvm);
8ca151b5
JB		 1063 mutex_unlock(&mvm->mutex);
1064
1065 return ret;
1066}
1067
cf2c92d8 1068static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
8ca151b5 1069{
8ca151b5
JB		 1070 int ret;
1071
1072 mutex_lock(&mvm->mutex);
1073
1074 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
b2492501 1075 iwl_mvm_d0i3_enable_tx(mvm, NULL);
e7afe89f 1076 ret = iwl_mvm_update_quotas(mvm, true, NULL);
8ca151b5
JB		 1077 if (ret)
1078 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1079 ret);
1080
7498cf4c
EP		 1081 /* allow transport/FW low power modes */
1082 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1083
cbd2ae2d
AN		 1084 /*
1085 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1086 * of packets the FW sent out, so we must reconnect.
1087 */
1088 iwl_mvm_teardown_tdls_peers(mvm);
1089
8ca151b5
JB		 1090 mutex_unlock(&mvm->mutex);
1091}
1092
088070a2
EP		 1093static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1094{
b7282643
LC		 1095 if (iwl_mvm_is_d0i3_supported(mvm) &&
1096 iwl_mvm_enter_d0i3_on_suspend(mvm))
1097 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1098 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1099 &mvm->status),
1100 HZ),
1101 "D0i3 exit on resume timed out\n");
088070a2
EP		 1102}
1103
cf2c92d8
EP		 1104static void
1105iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1106 enum ieee80211_reconfig_type reconfig_type)
1107{
1108 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1109
1110 switch (reconfig_type) {
1111 case IEEE80211_RECONFIG_TYPE_RESTART:
1112 iwl_mvm_restart_complete(mvm);
1113 break;
1114 case IEEE80211_RECONFIG_TYPE_SUSPEND:
088070a2 1115 iwl_mvm_resume_complete(mvm);
cf2c92d8
EP		 1116 break;
1117 }
1118}
1119
a0a09243 1120void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
8ca151b5 1121{
a0a09243 1122 lockdep_assert_held(&mvm->mutex);
7498cf4c 1123
91a8bcde
JB		 1124 /* firmware counters are obviously reset now, but we shouldn't
1125 * partially track so also clear the fw_reset_accu counters.
1126 */
1127 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1128
8ca151b5
JB		 1129 /* async_handlers_wk is now blocked */
1130
1131 /*
1132 * The work item could be running or queued if the
1133 * ROC time event stops just as we get here.
1134 */
c779273b 1135 flush_work(&mvm->roc_done_wk);
8ca151b5
JB		 1136
1137 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 1138
1139 iwl_mvm_async_handlers_purge(mvm);
1140 /* async_handlers_list is empty and will stay empty: HW is stopped */
1141
1142 /* the fw is stopped, the aux sta is dead: clean up driver state */
712b24ad 1143 iwl_mvm_del_aux_sta(mvm);
8ca151b5 1144
0a79a0c0
EP		 1145 /*
1146 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1147 * won't be called in this case).
8b2b9fbf
AN		 1148 * But make sure to cleanup interfaces that have gone down before/during
1149 * HW restart was requested.
0a79a0c0 1150 */
8b2b9fbf
AN		 1151 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1152 ieee80211_iterate_interfaces(mvm->hw, 0,
1153 iwl_mvm_cleanup_iterator, mvm);
0a79a0c0 1154
963221be
AB		 1155 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1156 * make sure there's nothing left there and warn if any is found.
1157 */
859d914c 1158 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
963221be
AB		 1159 int i;
1160
507e4cda 1161 for (i = 0; i < mvm->max_scans; i++) {
6185af2a
LC		 1162 if (WARN_ONCE(mvm->scan_uid_status[i],
1163 "UMAC scan UID %d status was not cleaned\n",
1164 i))
1165 mvm->scan_uid_status[i] = 0;
963221be
AB		 1166 }
1167 }
1168
bc44886d 1169 mvm->ucode_loaded = false;
a0a09243 1170}
bc44886d 1171
a0a09243
LC		 1172static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1173{
1174 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1175
1176 flush_work(&mvm->d0i3_exit_work);
1177 flush_work(&mvm->async_handlers_wk);
d2709ad7 1178 cancel_delayed_work_sync(&mvm->fw_dump_wk);
b6eaa45a 1179 iwl_mvm_free_fw_dump_desc(mvm);
a0a09243
LC		 1180
1181 mutex_lock(&mvm->mutex);
1182 __iwl_mvm_mac_stop(mvm);
8ca151b5
JB		 1183 mutex_unlock(&mvm->mutex);
1184
1185 /*
1186 * The worker might have been waiting for the mutex, let it run and
1187 * discover that its list is now empty.
1188 */
1189 cancel_work_sync(&mvm->async_handlers_wk);
1190}
1191
fe0f2de3
IP		 1192static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1193{
1194 u16 i;
1195
1196 lockdep_assert_held(&mvm->mutex);
1197
1198 for (i = 0; i < NUM_PHY_CTX; i++)
1199 if (!mvm->phy_ctxts[i].ref)
1200 return &mvm->phy_ctxts[i];
1201
1202 IWL_ERR(mvm, "No available PHY context\n");
1203 return NULL;
1204}
1205
d44c3fe6
AA		 1206static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1207 s16 tx_power)
1208{
1209 struct iwl_dev_tx_power_cmd cmd = {
da03f029
JB		 1210 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1211 .v2.mac_context_id =
d44c3fe6 1212 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
da03f029 1213 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
d44c3fe6 1214 };
da03f029 1215 int len = sizeof(cmd);
d44c3fe6 1216
d44c3fe6 1217 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
da03f029 1218 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
d44c3fe6 1219
da03f029
JB		 1220 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1221 len = sizeof(cmd.v2);
1222
1223 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
d44c3fe6
AA		 1224}
1225
8ca151b5
JB		 1226static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1227 struct ieee80211_vif *vif)
1228{
1229 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1230 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1231 int ret;
1232
aa5e1832
EG		 1233 mvmvif->mvm = mvm;
1234
d40fc489
GG		 1235 /*
1236 * make sure D0i3 exit is completed, otherwise a target access
1237 * during tx queue configuration could be done when still in
1238 * D0i3 state.
1239 */
1240 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1241 if (ret)
1242 return ret;
1243
8ca151b5
JB		 1244 /*
1245 * Not much to do here. The stack will not allow interface
1246 * types or combinations that we didn't advertise, so we
1247 * don't really have to check the types.
1248 */
1249
1250 mutex_lock(&mvm->mutex);
1251
33cef925
JB		 1252 /* make sure that beacon statistics don't go backwards with FW reset */
1253 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1254 mvmvif->beacon_stats.accu_num_beacons +=
1255 mvmvif->beacon_stats.num_beacons;
1256
e89044d7 1257 /* Allocate resources for the MAC context, and add it to the fw */
8ca151b5
JB		 1258 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1259 if (ret)
1260 goto out_unlock;
1261
1c2abf72 1262 /* Counting number of interfaces is needed for legacy PM */
ea183d02
IP		 1263 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1264 mvm->vif_count++;
ea183d02 1265
8ca151b5
JB		 1266 /*
1267 * The AP binding flow can be done only after the beacon
1268 * template is configured (which happens only in the mac80211
1269 * start_ap() flow), and adding the broadcast station can happen
1270 * only after the binding.
1271 * In addition, since modifying the MAC before adding a bcast
1272 * station is not allowed by the FW, delay the adding of MAC context to
1273 * the point where we can also add the bcast station.
1274 * In short: there's not much we can do at this point, other than
1275 * allocating resources :)
1276 */
5023d966
JB		 1277 if (vif->type == NL80211_IFTYPE_AP ||
1278 vif->type == NL80211_IFTYPE_ADHOC) {
013290aa 1279 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1280 if (ret) {
1281 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1282 goto out_release;
1283 }
1284
77740cb4 1285 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1286 goto out_unlock;
1287 }
1288
93190fb0
AA		 1289 mvmvif->features |= hw->netdev_features;
1290
8ca151b5
JB		 1291 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1292 if (ret)
1293 goto out_release;
1294
999609f1 1295 ret = iwl_mvm_power_update_mac(mvm);
e5e7aa8e 1296 if (ret)
fd66fc1c 1297 goto out_remove_mac;
8ca151b5 1298
7df15b1e 1299 /* beacon filtering */
a1022927 1300 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
bd3351ba
EP		 1301 if (ret)
1302 goto out_remove_mac;
1303
7df15b1e 1304 if (!mvm->bf_allowed_vif &&
73e5f2c5 1305 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
7df15b1e 1306 mvm->bf_allowed_vif = mvmvif;
a20fd398
AO		 1307 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1308 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
7df15b1e
HG		 1309 }
1310
8ca151b5
JB		 1311 /*
1312 * P2P_DEVICE interface does not have a channel context assigned to it,
1313 * so a dedicated PHY context is allocated to it and the corresponding
1314 * MAC context is bound to it at this stage.
1315 */
1316 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 1317
fe0f2de3
IP		 1318 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1319 if (!mvmvif->phy_ctxt) {
1320 ret = -ENOSPC;
bd3351ba 1321 goto out_free_bf;
fe0f2de3 1322 }
8ca151b5 1323
53a9d61e 1324 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1325 ret = iwl_mvm_binding_add_vif(mvm, vif);
1326 if (ret)
53a9d61e 1327 goto out_unref_phy;
8ca151b5 1328
013290aa 1329 ret = iwl_mvm_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1330 if (ret)
1331 goto out_unbind;
1332
1333 /* Save a pointer to p2p device vif, so it can later be used to
1334 * update the p2p device MAC when a GO is started/stopped */
1335 mvm->p2p_device_vif = vif;
1336 }
1337
63494374 1338 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1339 goto out_unlock;
1340
1341 out_unbind:
1342 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 1343 out_unref_phy:
fe0f2de3 1344 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
bd3351ba
EP		 1345 out_free_bf:
1346 if (mvm->bf_allowed_vif == mvmvif) {
1347 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1348 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1349 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
bd3351ba 1350 }
8ca151b5
JB		 1351 out_remove_mac:
1352 mvmvif->phy_ctxt = NULL;
1353 iwl_mvm_mac_ctxt_remove(mvm, vif);
1354 out_release:
5ee2b215
AB		 1355 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1356 mvm->vif_count--;
1c2abf72 1357
8ca151b5
JB		 1358 iwl_mvm_mac_ctxt_release(mvm, vif);
1359 out_unlock:
1360 mutex_unlock(&mvm->mutex);
1361
d40fc489
GG		 1362 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1363
8ca151b5
JB		 1364 return ret;
1365}
1366
38a12b5b
JB		 1367static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1368 struct ieee80211_vif *vif)
8ca151b5 1369{
d92b732e 1370 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
8ca151b5
JB		 1371
1372 if (tfd_msk) {
fe92e32a
EG		 1373 /*
1374 * mac80211 first removes all the stations of the vif and
1375 * then removes the vif. When it removes a station it also
1376 * flushes the AMPDU session. So by now, all the AMPDU sessions
1377 * of all the stations of this vif are closed, and the queues
1378 * of these AMPDU sessions are properly closed.
1379 * We still need to take care of the shared queues of the vif.
1380 * Flush them here.
1381 */
8ca151b5 1382 mutex_lock(&mvm->mutex);
5888a40c 1383 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
8ca151b5 1384 mutex_unlock(&mvm->mutex);
fe92e32a
EG		 1385
1386 /*
1387 * There are transports that buffer a few frames in the host.
1388 * For these, the flush above isn't enough since while we were
1389 * flushing, the transport might have sent more frames to the
1390 * device. To solve this, wait here until the transport is
1391 * empty. Technically, this could have replaced the flush
1392 * above, but flush is much faster than draining. So flush
1393 * first, and drain to make sure we have no frames in the
1394 * transport anymore.
1395 * If a station still had frames on the shared queues, it is
1396 * already marked as draining, so to complete the draining, we
1397 * just need to wait until the transport is empty.
1398 */
1399 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
8ca151b5
JB		 1400 }
1401
1402 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1403 /*
1404 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1405 * We assume here that all the packets sent to the OFFCHANNEL
1406 * queue are sent in ROC session.
1407 */
1408 flush_work(&mvm->roc_done_wk);
1409 } else {
1410 /*
1411 * By now, all the AC queues are empty. The AGG queues are
1412 * empty too. We already got all the Tx responses for all the
1413 * packets in the queues. The drain work can have been
0742a75a 1414 * triggered. Flush it.
8ca151b5
JB		 1415 */
1416 flush_work(&mvm->sta_drained_wk);
1417 }
38a12b5b
JB		 1418}
1419
1420static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1421 struct ieee80211_vif *vif)
1422{
1423 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1424 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1425
1426 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 1427
1428 mutex_lock(&mvm->mutex);
1429
7df15b1e
HG		 1430 if (mvm->bf_allowed_vif == mvmvif) {
1431 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1432 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1433 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
7df15b1e
HG		 1434 }
1435
63494374
JB		 1436 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1437
8ca151b5
JB		 1438 /*
1439 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 1440 * interface is be handled as part of the stop_ap flow.
8ca151b5 1441 */
5023d966
JB		 1442 if (vif->type == NL80211_IFTYPE_AP ||
1443 vif->type == NL80211_IFTYPE_ADHOC) {
507cadf2
DS		 1444#ifdef CONFIG_NL80211_TESTMODE
1445 if (vif == mvm->noa_vif) {
1446 mvm->noa_vif = NULL;
1447 mvm->noa_duration = 0;
1448 }
1449#endif
013290aa 1450 iwl_mvm_dealloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1451 goto out_release;
1452 }
1453
1454 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1455 mvm->p2p_device_vif = NULL;
013290aa 1456 iwl_mvm_rm_bcast_sta(mvm, vif);
8ca151b5 1457 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 1458 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1459 mvmvif->phy_ctxt = NULL;
1460 }
1461
5ee2b215 1462 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5 1463 mvm->vif_count--;
1c2abf72 1464
999609f1 1465 iwl_mvm_power_update_mac(mvm);
8ca151b5
JB		 1466 iwl_mvm_mac_ctxt_remove(mvm, vif);
1467
1468out_release:
1469 iwl_mvm_mac_ctxt_release(mvm, vif);
1470 mutex_unlock(&mvm->mutex);
1471}
1472
1473static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
88f2fd73 1474{
8ca151b5
JB		 1475 return 0;
1476}
1477
e59647ea
EP		 1478struct iwl_mvm_mc_iter_data {
1479 struct iwl_mvm *mvm;
1480 int port_id;
1481};
1482
1483static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1484 struct ieee80211_vif *vif)
1485{
1486 struct iwl_mvm_mc_iter_data *data = _data;
1487 struct iwl_mvm *mvm = data->mvm;
1488 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1489 int ret, len;
1490
1491 /* if we don't have free ports, mcast frames will be dropped */
1492 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1493 return;
1494
1495 if (vif->type != NL80211_IFTYPE_STATION ||
1496 !vif->bss_conf.assoc)
1497 return;
1498
1499 cmd->port_id = data->port_id++;
1500 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1501 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1502
1c4abec0 1503 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
e59647ea
EP		 1504 if (ret)
1505 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1506}
1507
1508static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1509{
1510 struct iwl_mvm_mc_iter_data iter_data = {
1511 .mvm = mvm,
88f2fd73
MG		 1512 };
1513
e59647ea
EP		 1514 lockdep_assert_held(&mvm->mutex);
1515
1516 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1517 return;
1518
1c4abec0 1519 ieee80211_iterate_active_interfaces_atomic(
e59647ea
EP		 1520 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1521 iwl_mvm_mc_iface_iterator, &iter_data);
88f2fd73
MG		 1522}
1523
e59647ea
EP		 1524static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1525 struct netdev_hw_addr_list *mc_list)
8ca151b5 1526{
e59647ea
EP		 1527 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1528 struct iwl_mcast_filter_cmd *cmd;
1529 struct netdev_hw_addr *addr;
f3bd58f4
MS		 1530 int addr_count;
1531 bool pass_all;
e59647ea
EP		 1532 int len;
1533
f3bd58f4
MS		 1534 addr_count = netdev_hw_addr_list_count(mc_list);
1535 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1536 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1537 if (pass_all)
e59647ea 1538 addr_count = 0;
e59647ea
EP		 1539
1540 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1541 cmd = kzalloc(len, GFP_ATOMIC);
1542 if (!cmd)
1543 return 0;
1544
1545 if (pass_all) {
1546 cmd->pass_all = 1;
1547 return (u64)(unsigned long)cmd;
1548 }
1549
1550 netdev_hw_addr_list_for_each(addr, mc_list) {
1551 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1552 cmd->count, addr->addr);
1553 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1554 addr->addr, ETH_ALEN);
1555 cmd->count++;
1556 }
1557
1558 return (u64)(unsigned long)cmd;
8ca151b5
JB		 1559}
1560
1561static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1562 unsigned int changed_flags,
1563 unsigned int *total_flags,
1564 u64 multicast)
1565{
e59647ea
EP		 1566 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1567 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
8ca151b5 1568
e59647ea 1569 mutex_lock(&mvm->mutex);
51b6b9e0 1570
e59647ea
EP		 1571 /* replace previous configuration */
1572 kfree(mvm->mcast_filter_cmd);
1573 mvm->mcast_filter_cmd = cmd;
51b6b9e0 1574
e59647ea
EP		 1575 if (!cmd)
1576 goto out;
51b6b9e0 1577
e59647ea
EP		 1578 iwl_mvm_recalc_multicast(mvm);
1579out:
1580 mutex_unlock(&mvm->mutex);
1581 *total_flags = 0;
51b6b9e0
EG		 1582}
1583
effd1929
AO		 1584static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1585 struct ieee80211_vif *vif,
1586 unsigned int filter_flags,
1587 unsigned int changed_flags)
1588{
1589 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1590
1591 /* We support only filter for probe requests */
1592 if (!(changed_flags & FIF_PROBE_REQ))
1593 return;
1594
1595 /* Supported only for p2p client interfaces */
1596 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1597 !vif->p2p)
1598 return;
1599
1600 mutex_lock(&mvm->mutex);
1601 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1602 mutex_unlock(&mvm->mutex);
1603}
1604
c87163b9
EP		 1605#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1606struct iwl_bcast_iter_data {
1607 struct iwl_mvm *mvm;
1608 struct iwl_bcast_filter_cmd *cmd;
1609 u8 current_filter;
1610};
1611
1612static void
1613iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1614 const struct iwl_fw_bcast_filter *in_filter,
1615 struct iwl_fw_bcast_filter *out_filter)
1616{
1617 struct iwl_fw_bcast_filter_attr *attr;
1618 int i;
1619
1620 memcpy(out_filter, in_filter, sizeof(*out_filter));
1621
1622 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1623 attr = &out_filter->attrs[i];
1624
1625 if (!attr->mask)
1626 break;
1627
2ee8f021
EP		 1628 switch (attr->reserved1) {
1629 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1630 if (vif->bss_conf.arp_addr_cnt != 1) {
1631 attr->mask = 0;
1632 continue;
1633 }
1634
1635 attr->val = vif->bss_conf.arp_addr_list[0];
1636 break;
1637 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1638 attr->val = *(__be32 *)&vif->addr[2];
1639 break;
1640 default:
1641 break;
1642 }
1643 attr->reserved1 = 0;
c87163b9
EP		 1644 out_filter->num_attrs++;
1645 }
1646}
1647
1648static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1649 struct ieee80211_vif *vif)
1650{
1651 struct iwl_bcast_iter_data *data = _data;
1652 struct iwl_mvm *mvm = data->mvm;
1653 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1654 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1655 struct iwl_fw_bcast_mac *bcast_mac;
1656 int i;
1657
1658 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1659 return;
1660
1661 bcast_mac = &cmd->macs[mvmvif->id];
1662
e48393e8
IP		 1663 /*
1664 * enable filtering only for associated stations, but not for P2P
1665 * Clients
1666 */
1667 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1668 !vif->bss_conf.assoc)
c87163b9
EP		 1669 return;
1670
1671 bcast_mac->default_discard = 1;
1672
1673 /* copy all configured filters */
1674 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1675 /*
1676 * Make sure we don't exceed our filters limit.
1677 * if there is still a valid filter to be configured,
1678 * be on the safe side and just allow bcast for this mac.
1679 */
1680 if (WARN_ON_ONCE(data->current_filter >=
1681 ARRAY_SIZE(cmd->filters))) {
1682 bcast_mac->default_discard = 0;
1683 bcast_mac->attached_filters = 0;
1684 break;
1685 }
1686
1687 iwl_mvm_set_bcast_filter(vif,
1688 &mvm->bcast_filters[i],
1689 &cmd->filters[data->current_filter]);
1690
1691 /* skip current filter if it contains no attributes */
1692 if (!cmd->filters[data->current_filter].num_attrs)
1693 continue;
1694
1695 /* attach the filter to current mac */
1696 bcast_mac->attached_filters |=
1697 cpu_to_le16(BIT(data->current_filter));
1698
1699 data->current_filter++;
1700 }
1701}
1702
de06a59e
EP		 1703bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1704 struct iwl_bcast_filter_cmd *cmd)
c87163b9 1705{
c87163b9
EP		 1706 struct iwl_bcast_iter_data iter_data = {
1707 .mvm = mvm,
de06a59e 1708 .cmd = cmd,
c87163b9
EP		 1709 };
1710
3b8983b1
MS		 1711 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1712 return false;
1713
de06a59e
EP		 1714 memset(cmd, 0, sizeof(*cmd));
1715 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1716 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1717
1718#ifdef CONFIG_IWLWIFI_DEBUGFS
1719 /* use debugfs filters/macs if override is configured */
1720 if (mvm->dbgfs_bcast_filtering.override) {
1721 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1722 sizeof(cmd->filters));
1723 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1724 sizeof(cmd->macs));
1725 return true;
1726 }
1727#endif
c87163b9
EP		 1728
1729 /* if no filters are configured, do nothing */
1730 if (!mvm->bcast_filters)
de06a59e 1731 return false;
c87163b9
EP		 1732
1733 /* configure and attach these filters for each associated sta vif */
1734 ieee80211_iterate_active_interfaces(
1735 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1736 iwl_mvm_bcast_filter_iterator, &iter_data);
1737
de06a59e
EP		 1738 return true;
1739}
34672bb3
EP		 1740
1741static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
de06a59e
EP		 1742{
1743 struct iwl_bcast_filter_cmd cmd;
1744
1745 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1746 return 0;
1747
1748 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1749 return 0;
1750
a1022927 1751 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
c87163b9
EP		 1752 sizeof(cmd), &cmd);
1753}
1754#else
34672bb3 1755static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
c87163b9
EP		 1756{
1757 return 0;
1758}
1759#endif
1760
8ca151b5
JB		 1761static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1762 struct ieee80211_vif *vif,
1763 struct ieee80211_bss_conf *bss_conf,
1764 u32 changes)
1765{
1766 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1767 int ret;
1768
6e97b0d2
IP		 1769 /*
1770 * Re-calculate the tsf id, as the master-slave relations depend on the
1771 * beacon interval, which was not known when the station interface was
1772 * added.
1773 */
1774 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1775 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1776
3dfd3a97
JB		 1777 /*
1778 * If we're not associated yet, take the (new) BSSID before associating
1779 * so the firmware knows. If we're already associated, then use the old
1780 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1781 * branch for disassociation below.
1782 */
1783 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1784 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1785
1786 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
8ca151b5
JB		 1787 if (ret)
1788 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1789
3dfd3a97
JB		 1790 /* after sending it once, adopt mac80211 data */
1791 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1792 mvmvif->associated = bss_conf->assoc;
1793
8ca151b5
JB		 1794 if (changes & BSS_CHANGED_ASSOC) {
1795 if (bss_conf->assoc) {
33cef925
JB		 1796 /* clear statistics to get clean beacon counter */
1797 iwl_mvm_request_statistics(mvm, true);
1798 memset(&mvmvif->beacon_stats, 0,
1799 sizeof(mvmvif->beacon_stats));
1800
8ca151b5 1801 /* add quota for this interface */
7754ae79 1802 ret = iwl_mvm_update_quotas(mvm, true, NULL);
8ca151b5
JB		 1803 if (ret) {
1804 IWL_ERR(mvm, "failed to update quotas\n");
1805 return;
1806 }
016d27e1
JB		 1807
1808 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1809 &mvm->status)) {
1810 /*
1811 * If we're restarting then the firmware will
1812 * obviously have lost synchronisation with
1813 * the AP. It will attempt to synchronise by
1814 * itself, but we can make it more reliable by
1815 * scheduling a session protection time event.
1816 *
1817 * The firmware needs to receive a beacon to
1818 * catch up with synchronisation, use 110% of
1819 * the beacon interval.
1820 *
1821 * Set a large maximum delay to allow for more
1822 * than a single interface.
1823 */
1824 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1825 iwl_mvm_protect_session(mvm, vif, dur, dur,
d20d37bc 1826 5 * dur, false);
016d27e1 1827 }
1f3b0ff8
LE		 1828
1829 iwl_mvm_sf_update(mvm, vif, false);
175a70b7 1830 iwl_mvm_power_vif_assoc(mvm, vif);
697162a1 1831 if (vif->p2p) {
29a90a49 1832 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
697162a1
EG		 1833 iwl_mvm_update_smps(mvm, vif,
1834 IWL_MVM_SMPS_REQ_PROT,
1835 IEEE80211_SMPS_DYNAMIC);
1836 }
8ca151b5 1837 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1f3b0ff8
LE		 1838 /*
1839 * If update fails - SF might be running in associated
1840 * mode while disassociated - which is forbidden.
1841 */
1842 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1843 "Failed to update SF upon disassociation\n");
1844
8ca151b5
JB		 1845 /* remove AP station now that the MAC is unassoc */
1846 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1847 if (ret)
1848 IWL_ERR(mvm, "failed to remove AP station\n");
37577fe2
EP		 1849
1850 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1851 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
8ca151b5
JB		 1852 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1853 /* remove quota for this interface */
7754ae79 1854 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5
JB		 1855 if (ret)
1856 IWL_ERR(mvm, "failed to update quotas\n");
29a90a49
EP		 1857
1858 if (vif->p2p)
1859 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
3dfd3a97
JB		 1860
1861 /* this will take the cleared BSSID from bss_conf */
1862 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1863 if (ret)
1864 IWL_ERR(mvm,
1865 "failed to update MAC %pM (clear after unassoc)\n",
1866 vif->addr);
8ca151b5 1867 }
a20fd398 1868
e59647ea 1869 iwl_mvm_recalc_multicast(mvm);
34672bb3 1870 iwl_mvm_configure_bcast_filter(mvm);
e59647ea 1871
a20fd398
AO		 1872 /* reset rssi values */
1873 mvmvif->bf_data.ave_beacon_signal = 0;
1874
8e484f0b 1875 iwl_mvm_bt_coex_vif_change(mvm);
f94045ed
EG		 1876 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1877 IEEE80211_SMPS_AUTOMATIC);
355346ba
AS		 1878 if (fw_has_capa(&mvm->fw->ucode_capa,
1879 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1880 iwl_mvm_config_scan(mvm);
989c6505 1881 } else if (changes & BSS_CHANGED_BEACON_INFO) {
210a544e
JB		 1882 /*
1883 * We received a beacon _after_ association so
1884 * remove the session protection.
1885 */
1886 iwl_mvm_remove_time_event(mvm, mvmvif,
1887 &mvmvif->time_event_data);
8ca151b5 1888 }
cc87d322
EH		 1889
1890 if (changes & BSS_CHANGED_BEACON_INFO) {
1891 iwl_mvm_sf_update(mvm, vif, false);
1892 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1893 }
1894
1bc10d3b
JB		 1895 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1896 ret = iwl_mvm_power_update_mac(mvm);
1897 if (ret)
1898 IWL_ERR(mvm, "failed to update power mode\n");
1899 }
1900
88f2fd73
MG		 1901 if (changes & BSS_CHANGED_TXPOWER) {
1902 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1903 bss_conf->txpower);
1904 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1905 }
a20fd398
AO		 1906
1907 if (changes & BSS_CHANGED_CQM) {
3c6acb61 1908 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
a20fd398
AO		 1909 /* reset cqm events tracking */
1910 mvmvif->bf_data.last_cqm_event = 0;
fa7b2e7f
AA		 1911 if (mvmvif->bf_data.bf_enabled) {
1912 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1913 if (ret)
1914 IWL_ERR(mvm,
1915 "failed to update CQM thresholds\n");
1916 }
a20fd398 1917 }
2ee8f021
EP		 1918
1919 if (changes & BSS_CHANGED_ARP_FILTER) {
3c6acb61 1920 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
34672bb3 1921 iwl_mvm_configure_bcast_filter(mvm);
2ee8f021 1922 }
8ca151b5
JB		 1923}
1924
5023d966
JB		 1925static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1926 struct ieee80211_vif *vif)
8ca151b5
JB		 1927{
1928 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1929 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1930 int ret;
1931
576eeee9
EP		 1932 /*
1933 * iwl_mvm_mac_ctxt_add() might read directly from the device
1934 * (the system time), so make sure it is available.
1935 */
1936 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1937 if (ret)
1938 return ret;
1939
8ca151b5
JB		 1940 mutex_lock(&mvm->mutex);
1941
1942 /* Send the beacon template */
1943 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1944 if (ret)
1945 goto out_unlock;
1946
6e97b0d2
IP		 1947 /*
1948 * Re-calculate the tsf id, as the master-slave relations depend on the
1949 * beacon interval, which was not known when the AP interface was added.
1950 */
1951 if (vif->type == NL80211_IFTYPE_AP)
1952 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1953
94939080
GG		 1954 mvmvif->ap_assoc_sta_count = 0;
1955
8ca151b5
JB		 1956 /* Add the mac context */
1957 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1958 if (ret)
1959 goto out_unlock;
1960
1961 /* Perform the binding */
1962 ret = iwl_mvm_binding_add_vif(mvm, vif);
1963 if (ret)
1964 goto out_remove;
1965
8ca151b5
JB		 1966 /* Send the bcast station. At this stage the TBTT and DTIM time events
1967 * are added and applied to the scheduler */
013290aa 1968 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1969 if (ret)
1970 goto out_unbind;
1971
5691e218
IP		 1972 /* must be set before quota calculations */
1973 mvmvif->ap_ibss_active = true;
1974
a11e144e 1975 /* power updated needs to be done before quotas */
999609f1 1976 iwl_mvm_power_update_mac(mvm);
a11e144e 1977
7754ae79 1978 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5 1979 if (ret)
a11e144e 1980 goto out_quota_failed;
8ca151b5 1981
5023d966 1982 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1983 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 1984 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 1985
29a90a49
EP		 1986 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1987
8e484f0b 1988 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1989
f697267f
AN		 1990 /* we don't support TDLS during DCM */
1991 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1992 iwl_mvm_teardown_tdls_peers(mvm);
1993
939e4904 1994 goto out_unlock;
8ca151b5 1995
a11e144e 1996out_quota_failed:
999609f1 1997 iwl_mvm_power_update_mac(mvm);
5691e218 1998 mvmvif->ap_ibss_active = false;
013290aa 1999 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5
JB		 2000out_unbind:
2001 iwl_mvm_binding_remove_vif(mvm, vif);
2002out_remove:
2003 iwl_mvm_mac_ctxt_remove(mvm, vif);
2004out_unlock:
2005 mutex_unlock(&mvm->mutex);
576eeee9 2006 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
8ca151b5
JB		 2007 return ret;
2008}
2009
5023d966
JB		 2010static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2011 struct ieee80211_vif *vif)
8ca151b5
JB		 2012{
2013 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2014 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2015
38a12b5b
JB		 2016 iwl_mvm_prepare_mac_removal(mvm, vif);
2017
8ca151b5
JB		 2018 mutex_lock(&mvm->mutex);
2019
664322fa 2020 /* Handle AP stop while in CSA */
7f0a7c67
AO		 2021 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2022 iwl_mvm_remove_time_event(mvm, mvmvif,
2023 &mvmvif->time_event_data);
664322fa 2024 RCU_INIT_POINTER(mvm->csa_vif, NULL);
e9cb0327 2025 mvmvif->csa_countdown = false;
7f0a7c67 2026 }
664322fa 2027
003e5236
AO		 2028 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2029 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2030 mvm->csa_tx_block_bcn_timeout = 0;
2031 }
2032
5023d966 2033 mvmvif->ap_ibss_active = false;
1c87bbad 2034 mvm->ap_last_beacon_gp2 = 0;
8ca151b5 2035
8e484f0b 2036 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 2037
29a90a49
EP		 2038 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2039
5023d966 2040 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 2041 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 2042 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 2043
7754ae79 2044 iwl_mvm_update_quotas(mvm, false, NULL);
013290aa 2045 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5 2046 iwl_mvm_binding_remove_vif(mvm, vif);
a11e144e 2047
999609f1 2048 iwl_mvm_power_update_mac(mvm);
a11e144e 2049
8ca151b5
JB		 2050 iwl_mvm_mac_ctxt_remove(mvm, vif);
2051
2052 mutex_unlock(&mvm->mutex);
2053}
2054
5023d966
JB		 2055static void
2056iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2057 struct ieee80211_vif *vif,
2058 struct ieee80211_bss_conf *bss_conf,
2059 u32 changes)
8ca151b5 2060{
be2056fc 2061 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8a5e3660 2062
be2056fc
IP		 2063 /* Changes will be applied when the AP/IBSS is started */
2064 if (!mvmvif->ap_ibss_active)
2065 return;
2066
863230da 2067 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
f7d8b702 2068 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
3dfd3a97 2069 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
863230da 2070 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
8a5e3660 2071
8ca151b5 2072 /* Need to send a new beacon template to the FW */
863230da
JB		 2073 if (changes & BSS_CHANGED_BEACON &&
2074 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2075 IWL_WARN(mvm, "Failed updating beacon data\n");
79b7a69d
HD		 2076
2077 if (changes & BSS_CHANGED_TXPOWER) {
2078 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2079 bss_conf->txpower);
2080 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2081 }
2082
8ca151b5
JB		 2083}
2084
2085static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2086 struct ieee80211_vif *vif,
2087 struct ieee80211_bss_conf *bss_conf,
2088 u32 changes)
2089{
2090 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2091
576eeee9
EP		 2092 /*
2093 * iwl_mvm_bss_info_changed_station() might call
2094 * iwl_mvm_protect_session(), which reads directly from
2095 * the device (the system time), so make sure it is available.
2096 */
2097 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2098 return;
2099
8ca151b5
JB		 2100 mutex_lock(&mvm->mutex);
2101
723f02ed 2102 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
c7d42480 2103 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
723f02ed 2104
8ca151b5
JB		 2105 switch (vif->type) {
2106 case NL80211_IFTYPE_STATION:
2107 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2108 break;
2109 case NL80211_IFTYPE_AP:
5023d966
JB		 2110 case NL80211_IFTYPE_ADHOC:
2111 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
8ca151b5
JB		 2112 break;
2113 default:
2114 /* shouldn't happen */
2115 WARN_ON_ONCE(1);
2116 }
2117
2118 mutex_unlock(&mvm->mutex);
576eeee9 2119 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
8ca151b5
JB		 2120}
2121
2122static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2123 struct ieee80211_vif *vif,
c56ef672 2124 struct ieee80211_scan_request *hw_req)
8ca151b5
JB		 2125{
2126 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2127 int ret;
2128
6749dd80
LC		 2129 if (hw_req->req.n_channels == 0 ||
2130 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
8ca151b5
JB		 2131 return -EINVAL;
2132
2133 mutex_lock(&mvm->mutex);
6749dd80 2134 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
8ca151b5 2135 mutex_unlock(&mvm->mutex);
6749dd80 2136
8ca151b5
JB		 2137 return ret;
2138}
2139
2140static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2141 struct ieee80211_vif *vif)
2142{
2143 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2144
2145 mutex_lock(&mvm->mutex);
2146
e7d3abab
LC		 2147 /* Due to a race condition, it's possible that mac80211 asks
2148 * us to stop a hw_scan when it's already stopped. This can
2149 * happen, for instance, if we stopped the scan ourselves,
2150 * called ieee80211_scan_completed() and the userspace called
2151 * cancel scan scan before ieee80211_scan_work() could run.
2152 * To handle that, simply return if the scan is not running.
2153 */
262888fc 2154 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
c7d42480 2155 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
8ca151b5
JB		 2156
2157 mutex_unlock(&mvm->mutex);
2158}
2159
2160static void
2161iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
3e56eadf 2162 struct ieee80211_sta *sta, u16 tids,
8ca151b5
JB		 2163 int num_frames,
2164 enum ieee80211_frame_release_type reason,
2165 bool more_data)
2166{
2167 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5 2168
3e56eadf 2169 /* Called when we need to transmit (a) frame(s) from mac80211 */
8ca151b5 2170
3e56eadf
JB		 2171 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2172 tids, more_data, false);
2173}
2174
2175static void
2176iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2177 struct ieee80211_sta *sta, u16 tids,
2178 int num_frames,
2179 enum ieee80211_frame_release_type reason,
2180 bool more_data)
2181{
2182 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2183
2184 /* Called when we need to transmit (a) frame(s) from agg queue */
2185
2186 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2187 tids, more_data, true);
8ca151b5
JB		 2188}
2189
2190static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2191 struct ieee80211_vif *vif,
2192 enum sta_notify_cmd cmd,
2193 struct ieee80211_sta *sta)
2194{
2195 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5b577a90 2196 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
c22b0ff5 2197 unsigned long txqs = 0, tids = 0;
3e56eadf 2198 int tid;
8ca151b5 2199
c22b0ff5
EG		 2200 spin_lock_bh(&mvmsta->lock);
2201 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2202 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2203
2204 if (tid_data->state != IWL_AGG_ON &&
2205 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2206 continue;
2207
2208 __set_bit(tid_data->txq_id, &txqs);
2209
2210 if (iwl_mvm_tid_queued(tid_data) == 0)
2211 continue;
2212
2213 __set_bit(tid, &tids);
2214 }
2215
8ca151b5
JB		 2216 switch (cmd) {
2217 case STA_NOTIFY_SLEEP:
e3d4bc8c 2218 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5 2219 ieee80211_sta_block_awake(hw, sta, true);
3e56eadf 2220
c22b0ff5 2221 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
3e56eadf 2222 ieee80211_sta_set_buffered(sta, tid, true);
c22b0ff5
EG		 2223
2224 if (txqs)
2225 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
8ca151b5
JB		 2226 /*
2227 * The fw updates the STA to be asleep. Tx packets on the Tx
2228 * queues to this station will not be transmitted. The fw will
2229 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2230 */
2231 break;
2232 case STA_NOTIFY_AWAKE:
881acd89 2233 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
8ca151b5 2234 break;
c22b0ff5
EG		 2235
2236 if (txqs)
2237 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
9cc40712 2238 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 2239 break;
2240 default:
2241 break;
2242 }
c22b0ff5 2243 spin_unlock_bh(&mvmsta->lock);
8ca151b5
JB		 2244}
2245
1ddbbb0c
JB		 2246static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2247 struct ieee80211_vif *vif,
2248 struct ieee80211_sta *sta)
2249{
2250 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
94939080 2251 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
9d8ce6af 2252 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1ddbbb0c
JB		 2253
2254 /*
2255 * This is called before mac80211 does RCU synchronisation,
2256 * so here we already invalidate our internal RCU-protected
2257 * station pointer. The rest of the code will thus no longer
2258 * be able to find the station this way, and we don't rely
2259 * on further RCU synchronisation after the sta_state()
2260 * callback deleted the station.
2261 */
2262 mutex_lock(&mvm->mutex);
2263 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2264 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2265 ERR_PTR(-ENOENT));
94939080
GG		 2266
2267 if (mvm_sta->vif->type == NL80211_IFTYPE_AP) {
2268 mvmvif->ap_assoc_sta_count--;
f82c8339 2269 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
94939080
GG		 2270 }
2271
1ddbbb0c
JB		 2272 mutex_unlock(&mvm->mutex);
2273}
2274
bd1ba664
JB		 2275static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2276 const u8 *bssid)
2277{
2278 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2279 return;
2280
2281 if (iwlwifi_mod_params.uapsd_disable) {
2282 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2283 return;
2284 }
2285
2286 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2287}
2288
1e8f1329
GBA		 2289static void
2290iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2291 struct ieee80211_vif *vif, u8 *peer_addr,
2292 enum nl80211_tdls_operation action)
2293{
2294 struct iwl_fw_dbg_trigger_tlv *trig;
2295 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2296
2297 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2298 return;
2299
2300 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2301 tdls_trig = (void *)trig->data;
2302 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2303 return;
2304
2305 if (!(tdls_trig->action_bitmap & BIT(action)))
2306 return;
2307
2308 if (tdls_trig->peer_mode &&
2309 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2310 return;
2311
2312 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2313 "TDLS event occurred, peer %pM, action %d",
2314 peer_addr, action);
2315}
2316
8ca151b5
JB		 2317static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2318 struct ieee80211_vif *vif,
2319 struct ieee80211_sta *sta,
2320 enum ieee80211_sta_state old_state,
2321 enum ieee80211_sta_state new_state)
2322{
2323 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2324 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2325 int ret;
2326
2327 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2328 sta->addr, old_state, new_state);
2329
2330 /* this would be a mac80211 bug ... but don't crash */
2331 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2332 return -EINVAL;
2333
2334 /* if a STA is being removed, reuse its ID */
2335 flush_work(&mvm->sta_drained_wk);
2336
2337 mutex_lock(&mvm->mutex);
2338 if (old_state == IEEE80211_STA_NOTEXIST &&
2339 new_state == IEEE80211_STA_NONE) {
48bc1307
JB		 2340 /*
2341 * Firmware bug - it'll crash if the beacon interval is less
2342 * than 16. We can't avoid connecting at all, so refuse the
2343 * station state change, this will cause mac80211 to abandon
2344 * attempts to connect to this AP, and eventually wpa_s will
2345 * blacklist the AP...
2346 */
2347 if (vif->type == NL80211_IFTYPE_STATION &&
2348 vif->bss_conf.beacon_int < 16) {
2349 IWL_ERR(mvm,
2350 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2351 sta->addr, vif->bss_conf.beacon_int);
2352 ret = -EINVAL;
2353 goto out_unlock;
2354 }
cf7b491d
AN		 2355
2356 if (sta->tdls &&
2357 (vif->p2p ||
fa3d07e4
AN		 2358 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2359 IWL_MVM_TDLS_STA_COUNT ||
cf7b491d
AN		 2360 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2361 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2362 ret = -EBUSY;
2363 goto out_unlock;
2364 }
2365
8ca151b5 2366 ret = iwl_mvm_add_sta(mvm, vif, sta);
1e8f1329 2367 if (sta->tdls && ret == 0) {
fa3d07e4 2368 iwl_mvm_recalc_tdls_state(mvm, vif, true);
1e8f1329
GBA		 2369 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2370 NL80211_TDLS_SETUP);
2371 }
8ca151b5
JB		 2372 } else if (old_state == IEEE80211_STA_NONE &&
2373 new_state == IEEE80211_STA_AUTH) {
e820c2da
HD		 2374 /*
2375 * EBS may be disabled due to previous failures reported by FW.
2376 * Reset EBS status here assuming environment has been changed.
2377 */
2378 mvm->last_ebs_successful = true;
bd1ba664 2379 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
8ca151b5
JB		 2380 ret = 0;
2381 } else if (old_state == IEEE80211_STA_AUTH &&
2382 new_state == IEEE80211_STA_ASSOC) {
7a453973
JB		 2383 ret = iwl_mvm_update_sta(mvm, vif, sta);
2384 if (ret == 0)
2385 iwl_mvm_rs_rate_init(mvm, sta,
b87c2179
ES		 2386 mvmvif->phy_ctxt->channel->band,
2387 true);
8ca151b5
JB		 2388 } else if (old_state == IEEE80211_STA_ASSOC &&
2389 new_state == IEEE80211_STA_AUTHORIZED) {
f59e0e3c
AN		 2390
2391 /* we don't support TDLS during DCM */
2392 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2393 iwl_mvm_teardown_tdls_peers(mvm);
2394
1e8f1329
GBA		 2395 if (sta->tdls)
2396 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2397 NL80211_TDLS_ENABLE_LINK);
2398
7df15b1e 2399 /* enable beacon filtering */
fa7b2e7f 2400 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2401 ret = 0;
2402 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2403 new_state == IEEE80211_STA_ASSOC) {
7df15b1e 2404 /* disable beacon filtering */
a1022927 2405 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2406 ret = 0;
2407 } else if (old_state == IEEE80211_STA_ASSOC &&
2408 new_state == IEEE80211_STA_AUTH) {
2409 ret = 0;
2410 } else if (old_state == IEEE80211_STA_AUTH &&
2411 new_state == IEEE80211_STA_NONE) {
2412 ret = 0;
2413 } else if (old_state == IEEE80211_STA_NONE &&
2414 new_state == IEEE80211_STA_NOTEXIST) {
2415 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1e8f1329 2416 if (sta->tdls) {
fa3d07e4 2417 iwl_mvm_recalc_tdls_state(mvm, vif, false);
1e8f1329
GBA		 2418 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2419 NL80211_TDLS_DISABLE_LINK);
2420 }
8ca151b5
JB		 2421 } else {
2422 ret = -EIO;
2423 }
48bc1307 2424 out_unlock:
8ca151b5
JB		 2425 mutex_unlock(&mvm->mutex);
2426
9c126cd6
LK		 2427 if (sta->tdls && ret == 0) {
2428 if (old_state == IEEE80211_STA_NOTEXIST &&
2429 new_state == IEEE80211_STA_NONE)
2430 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2431 else if (old_state == IEEE80211_STA_NONE &&
2432 new_state == IEEE80211_STA_NOTEXIST)
2433 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2434 }
2435
8ca151b5
JB		 2436 return ret;
2437}
2438
2439static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2440{
2441 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2442
2443 mvm->rts_threshold = value;
2444
2445 return 0;
2446}
2447
1f3b0ff8
LE		 2448static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2449 struct ieee80211_vif *vif,
2450 struct ieee80211_sta *sta, u32 changed)
2451{
2452 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2453
2454 if (vif->type == NL80211_IFTYPE_STATION &&
2455 changed & IEEE80211_RC_NSS_CHANGED)
2456 iwl_mvm_sf_update(mvm, vif, false);
2457}
2458
8ca151b5
JB		 2459static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2460 struct ieee80211_vif *vif, u16 ac,
2461 const struct ieee80211_tx_queue_params *params)
2462{
2463 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2464 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2465
2466 mvmvif->queue_params[ac] = *params;
2467
2468 /*
2469 * No need to update right away, we'll get BSS_CHANGED_QOS
2470 * The exception is P2P_DEVICE interface which needs immediate update.
2471 */
2472 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2473 int ret;
2474
2475 mutex_lock(&mvm->mutex);
3dfd3a97 2476 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
8ca151b5
JB		 2477 mutex_unlock(&mvm->mutex);
2478 return ret;
2479 }
2480 return 0;
2481}
2482
2483static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2484 struct ieee80211_vif *vif)
2485{
2486 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2487 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2488 200 + vif->bss_conf.beacon_int);
2489 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2490 100 + vif->bss_conf.beacon_int);
2491
2492 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2493 return;
2494
576eeee9
EP		 2495 /*
2496 * iwl_mvm_protect_session() reads directly from the device
2497 * (the system time), so make sure it is available.
2498 */
2499 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2500 return;
2501
8ca151b5
JB		 2502 mutex_lock(&mvm->mutex);
2503 /* Try really hard to protect the session and hear a beacon */
d20d37bc 2504 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
8ca151b5 2505 mutex_unlock(&mvm->mutex);
576eeee9
EP		 2506
2507 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
8ca151b5
JB		 2508}
2509
35a000b7
DS		 2510static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2511 struct ieee80211_vif *vif,
2512 struct cfg80211_sched_scan_request *req,
633e2713 2513 struct ieee80211_scan_ies *ies)
35a000b7
DS		 2514{
2515 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
35a000b7 2516
35a000b7 2517 int ret;
4660dfbb 2518
35a000b7
DS		 2519 mutex_lock(&mvm->mutex);
2520
1f940386 2521 if (!vif->bss_conf.idle) {
bd5e4744
DS		 2522 ret = -EBUSY;
2523 goto out;
2524 }
2525
19945dfb 2526 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
d2496221 2527
35a000b7
DS		 2528out:
2529 mutex_unlock(&mvm->mutex);
2530 return ret;
2531}
2532
37e3308c
JB		 2533static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2534 struct ieee80211_vif *vif)
35a000b7
DS		 2535{
2536 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
33ea27f6 2537 int ret;
35a000b7
DS		 2538
2539 mutex_lock(&mvm->mutex);
e7d3abab
LC		 2540
2541 /* Due to a race condition, it's possible that mac80211 asks
2542 * us to stop a sched_scan when it's already stopped. This
2543 * can happen, for instance, if we stopped the scan ourselves,
2544 * called ieee80211_sched_scan_stopped() and the userspace called
2545 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2546 * could run. To handle this, simply return if the scan is
2547 * not running.
2548 */
262888fc 2549 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
e7d3abab
LC		 2550 mutex_unlock(&mvm->mutex);
2551 return 0;
2552 }
2553
c7d42480 2554 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
35a000b7 2555 mutex_unlock(&mvm->mutex);
33ea27f6 2556 iwl_mvm_wait_for_async_handlers(mvm);
37e3308c 2557
33ea27f6 2558 return ret;
35a000b7
DS		 2559}
2560
8ca151b5
JB		 2561static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2562 enum set_key_cmd cmd,
2563 struct ieee80211_vif *vif,
2564 struct ieee80211_sta *sta,
2565 struct ieee80211_key_conf *key)
2566{
2567 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2568 int ret;
d6ee54a9 2569 u8 key_offset;
8ca151b5
JB		 2570
2571 if (iwlwifi_mod_params.sw_crypto) {
2572 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2573 return -EOPNOTSUPP;
2574 }
2575
2576 switch (key->cipher) {
2577 case WLAN_CIPHER_SUITE_TKIP:
2578 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
8ca151b5
JB		 2579 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2580 break;
ca8c0f4b
JB		 2581 case WLAN_CIPHER_SUITE_CCMP:
2582 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2583 break;
8ca151b5 2584 case WLAN_CIPHER_SUITE_AES_CMAC:
30686bf7 2585 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
8ca151b5
JB		 2586 break;
2587 case WLAN_CIPHER_SUITE_WEP40:
2588 case WLAN_CIPHER_SUITE_WEP104:
ba3943b0
JB		 2589 /* For non-client mode, only use WEP keys for TX as we probably
2590 * don't have a station yet anyway and would then have to keep
2591 * track of the keys, linking them to each of the clients/peers
2592 * as they appear. For now, don't do that, for performance WEP
2593 * offload doesn't really matter much, but we need it for some
2594 * other offload features in client mode.
8ca151b5 2595 */
ba3943b0
JB		 2596 if (vif->type != NL80211_IFTYPE_STATION)
2597 return 0;
2598 break;
8ca151b5 2599 default:
e36e5433
MS		 2600 /* currently FW supports only one optional cipher scheme */
2601 if (hw->n_cipher_schemes &&
2602 hw->cipher_schemes->cipher == key->cipher)
2603 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2604 else
2605 return -EOPNOTSUPP;
8ca151b5
JB		 2606 }
2607
2608 mutex_lock(&mvm->mutex);
2609
2610 switch (cmd) {
2611 case SET_KEY:
5023d966
JB		 2612 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2613 vif->type == NL80211_IFTYPE_AP) && !sta) {
2614 /*
2615 * GTK on AP interface is a TX-only key, return 0;
2616 * on IBSS they're per-station and because we're lazy
2617 * we don't support them for RX, so do the same.
2618 */
6caffd4f
JB		 2619 ret = 0;
2620 key->hw_key_idx = STA_KEY_IDX_INVALID;
2621 break;
2622 }
2623
b546dcd6
JB		 2624 /* During FW restart, in order to restore the state as it was,
2625 * don't try to reprogram keys we previously failed for.
2626 */
2627 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2628 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2629 IWL_DEBUG_MAC80211(mvm,
2630 "skip invalid idx key programming during restart\n");
2631 ret = 0;
2632 break;
2633 }
2634
d6ee54a9
LC		 2635 /* in HW restart reuse the index, otherwise request a new one */
2636 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2637 key_offset = key->hw_key_idx;
2638 else
2639 key_offset = STA_KEY_IDX_INVALID;
2640
8ca151b5 2641 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
d6ee54a9 2642 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
8ca151b5
JB		 2643 if (ret) {
2644 IWL_WARN(mvm, "set key failed\n");
2645 /*
2646 * can't add key for RX, but we don't need it
2647 * in the device for TX so still return 0
2648 */
6caffd4f 2649 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 2650 ret = 0;
2651 }
2652
2653 break;
2654 case DISABLE_KEY:
6caffd4f
JB		 2655 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2656 ret = 0;
2657 break;
2658 }
2659
8ca151b5
JB		 2660 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2661 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2662 break;
2663 default:
2664 ret = -EINVAL;
2665 }
2666
2667 mutex_unlock(&mvm->mutex);
2668 return ret;
2669}
2670
2671static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2672 struct ieee80211_vif *vif,
2673 struct ieee80211_key_conf *keyconf,
2674 struct ieee80211_sta *sta,
2675 u32 iv32, u16 *phase1key)
2676{
2677 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2678
5023d966
JB		 2679 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2680 return;
2681
8ca151b5
JB		 2682 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2683}
2684
2685
b112889c
AM		 2686static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2687 struct iwl_rx_packet *pkt, void *data)
2688{
2689 struct iwl_mvm *mvm =
2690 container_of(notif_wait, struct iwl_mvm, notif_wait);
2691 struct iwl_hs20_roc_res *resp;
2692 int resp_len = iwl_rx_packet_payload_len(pkt);
2693 struct iwl_mvm_time_event_data *te_data = data;
2694
2695 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2696 return true;
2697
2698 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2699 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2700 return true;
2701 }
2702
2703 resp = (void *)pkt->data;
2704
2705 IWL_DEBUG_TE(mvm,
2706 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2707 resp->status, resp->event_unique_id);
2708
2709 te_data->uid = le32_to_cpu(resp->event_unique_id);
2710 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2711 te_data->uid);
2712
2713 spin_lock_bh(&mvm->time_event_lock);
2714 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2715 spin_unlock_bh(&mvm->time_event_lock);
2716
2717 return true;
2718}
2719
dc28e12f
MG		 2720#define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2721#define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2722#define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2723#define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2724#define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
b112889c
AM		 2725static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2726 struct ieee80211_channel *channel,
2727 struct ieee80211_vif *vif,
2728 int duration)
2729{
2730 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2731 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2732 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
6eb031d2 2733 static const u16 time_event_response[] = { HOT_SPOT_CMD };
b112889c 2734 struct iwl_notification_wait wait_time_event;
dc28e12f
MG		 2735 u32 dtim_interval = vif->bss_conf.dtim_period *
2736 vif->bss_conf.beacon_int;
2737 u32 req_dur, delay;
b112889c
AM		 2738 struct iwl_hs20_roc_req aux_roc_req = {
2739 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2740 .id_and_color =
2741 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2742 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2743 /* Set the channel info data */
2744 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2745 PHY_BAND_24 : PHY_BAND_5,
2746 .channel_info.channel = channel->hw_value,
2747 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2748 /* Set the time and duration */
2749 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
b112889c
AM		 2750 };
2751
dc28e12f
MG		 2752 delay = AUX_ROC_MIN_DELAY;
2753 req_dur = MSEC_TO_TU(duration);
2754
2755 /*
2756 * If we are associated we want the delay time to be at least one
2757 * dtim interval so that the FW can wait until after the DTIM and
2758 * then start the time event, this will potentially allow us to
2759 * remain off-channel for the max duration.
2760 * Since we want to use almost a whole dtim interval we would also
2761 * like the delay to be for 2-3 dtim intervals, in case there are
2762 * other time events with higher priority.
2763 */
2764 if (vif->bss_conf.assoc) {
2765 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2766 /* We cannot remain off-channel longer than the DTIM interval */
2767 if (dtim_interval <= req_dur) {
2768 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2769 if (req_dur <= AUX_ROC_MIN_DURATION)
2770 req_dur = dtim_interval -
2771 AUX_ROC_MIN_SAFETY_BUFFER;
2772 }
2773 }
2774
2775 aux_roc_req.duration = cpu_to_le32(req_dur);
2776 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2777
2778 IWL_DEBUG_TE(mvm,
2779 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2780 channel->hw_value, req_dur, duration, delay,
2781 dtim_interval);
b112889c
AM		 2782 /* Set the node address */
2783 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2784
a6cc5163
MG		 2785 lockdep_assert_held(&mvm->mutex);
2786
2787 spin_lock_bh(&mvm->time_event_lock);
2788
2789 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2790 spin_unlock_bh(&mvm->time_event_lock);
2791 return -EIO;
2792 }
2793
b112889c
AM		 2794 te_data->vif = vif;
2795 te_data->duration = duration;
2796 te_data->id = HOT_SPOT_CMD;
2797
b112889c
AM		 2798 spin_unlock_bh(&mvm->time_event_lock);
2799
2800 /*
2801 * Use a notification wait, which really just processes the
2802 * command response and doesn't wait for anything, in order
2803 * to be able to process the response and get the UID inside
2804 * the RX path. Using CMD_WANT_SKB doesn't work because it
2805 * stores the buffer and then wakes up this thread, by which
2806 * time another notification (that the time event started)
2807 * might already be processed unsuccessfully.
2808 */
2809 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2810 time_event_response,
2811 ARRAY_SIZE(time_event_response),
2812 iwl_mvm_rx_aux_roc, te_data);
2813
2814 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2815 &aux_roc_req);
2816
2817 if (res) {
2818 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2819 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2820 goto out_clear_te;
2821 }
2822
2823 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2824 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2825 /* should never fail */
2826 WARN_ON_ONCE(res);
2827
2828 if (res) {
2829 out_clear_te:
2830 spin_lock_bh(&mvm->time_event_lock);
2831 iwl_mvm_te_clear_data(mvm, te_data);
2832 spin_unlock_bh(&mvm->time_event_lock);
2833 }
2834
2835 return res;
2836}
2837
8ca151b5
JB		 2838static int iwl_mvm_roc(struct ieee80211_hw *hw,
2839 struct ieee80211_vif *vif,
2840 struct ieee80211_channel *channel,
d339d5ca
IP		 2841 int duration,
2842 enum ieee80211_roc_type type)
8ca151b5
JB		 2843{
2844 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 2845 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 2846 struct cfg80211_chan_def chandef;
31d385ae
IP		 2847 struct iwl_mvm_phy_ctxt *phy_ctxt;
2848 int ret, i;
2849
2850 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2851 duration, type);
8ca151b5 2852
6ed13164
MG		 2853 flush_work(&mvm->roc_done_wk);
2854
a6cc5163
MG		 2855 mutex_lock(&mvm->mutex);
2856
b112889c
AM		 2857 switch (vif->type) {
2858 case NL80211_IFTYPE_STATION:
859d914c
JB		 2859 if (fw_has_capa(&mvm->fw->ucode_capa,
2860 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
5ac6c72e
LC		 2861 /* Use aux roc framework (HS20) */
2862 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2863 vif, duration);
2864 goto out_unlock;
2865 }
2866 IWL_ERR(mvm, "hotspot not supported\n");
2867 ret = -EINVAL;
a6cc5163 2868 goto out_unlock;
b112889c
AM		 2869 case NL80211_IFTYPE_P2P_DEVICE:
2870 /* handle below */
2871 break;
2872 default:
2873 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
a6cc5163
MG		 2874 ret = -EINVAL;
2875 goto out_unlock;
8ca151b5
JB		 2876 }
2877
31d385ae
IP		 2878 for (i = 0; i < NUM_PHY_CTX; i++) {
2879 phy_ctxt = &mvm->phy_ctxts[i];
2880 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2881 continue;
2882
2883 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2884 /*
2885 * Unbind the P2P_DEVICE from the current PHY context,
2886 * and if the PHY context is not used remove it.
2887 */
2888 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2889 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2890 goto out_unlock;
2891
2892 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2893
2894 /* Bind the P2P_DEVICE to the current PHY Context */
2895 mvmvif->phy_ctxt = phy_ctxt;
2896
2897 ret = iwl_mvm_binding_add_vif(mvm, vif);
2898 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2899 goto out_unlock;
2900
2901 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2902 goto schedule_time_event;
2903 }
2904 }
2905
2906 /* Need to update the PHY context only if the ROC channel changed */
2907 if (channel == mvmvif->phy_ctxt->channel)
2908 goto schedule_time_event;
2909
8ca151b5 2910 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 2911
31d385ae
IP		 2912 /*
2913 * Change the PHY context configuration as it is currently referenced
2914 * only by the P2P Device MAC
2915 */
2916 if (mvmvif->phy_ctxt->ref == 1) {
2917 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2918 &chandef, 1, 1);
2919 if (ret)
2920 goto out_unlock;
2921 } else {
2922 /*
2923 * The PHY context is shared with other MACs. Need to remove the
2924 * P2P Device from the binding, allocate an new PHY context and
2925 * create a new binding
2926 */
2927 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2928 if (!phy_ctxt) {
2929 ret = -ENOSPC;
2930 goto out_unlock;
2931 }
2932
2933 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2934 1, 1);
2935 if (ret) {
2936 IWL_ERR(mvm, "Failed to change PHY context\n");
2937 goto out_unlock;
2938 }
2939
2940 /* Unbind the P2P_DEVICE from the current PHY context */
2941 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2942 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2943 goto out_unlock;
2944
2945 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2946
2947 /* Bind the P2P_DEVICE to the new allocated PHY context */
2948 mvmvif->phy_ctxt = phy_ctxt;
2949
2950 ret = iwl_mvm_binding_add_vif(mvm, vif);
2951 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2952 goto out_unlock;
2953
2954 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2955 }
2956
2957schedule_time_event:
8ca151b5 2958 /* Schedule the time events */
e635c797 2959 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 2960
31d385ae 2961out_unlock:
8ca151b5
JB		 2962 mutex_unlock(&mvm->mutex);
2963 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 2964 return ret;
2965}
2966
2967static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2968{
2969 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2970
2971 IWL_DEBUG_MAC80211(mvm, "enter\n");
2972
2973 mutex_lock(&mvm->mutex);
bf5da87f 2974 iwl_mvm_stop_roc(mvm);
8ca151b5
JB		 2975 mutex_unlock(&mvm->mutex);
2976
2977 IWL_DEBUG_MAC80211(mvm, "leave\n");
2978 return 0;
2979}
2980
b08c1d97
LC		 2981static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2982 struct ieee80211_chanctx_conf *ctx)
8ca151b5 2983{
fe0f2de3
IP		 2984 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2985 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 2986 int ret;
2987
b08c1d97
LC		 2988 lockdep_assert_held(&mvm->mutex);
2989
53a9d61e 2990 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 2991
fe0f2de3
IP		 2992 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2993 if (!phy_ctxt) {
2994 ret = -ENOSPC;
2995 goto out;
2996 }
8ca151b5 2997
dcbc3e1a 2998 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
53a9d61e
IP		 2999 ctx->rx_chains_static,
3000 ctx->rx_chains_dynamic);
fe0f2de3
IP		 3001 if (ret) {
3002 IWL_ERR(mvm, "Failed to add PHY context\n");
3003 goto out;
3004 }
3005
53a9d61e 3006 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 3007 *phy_ctxt_id = phy_ctxt->id;
3008out:
b08c1d97
LC		 3009 return ret;
3010}
3011
3012static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3013 struct ieee80211_chanctx_conf *ctx)
3014{
3015 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3016 int ret;
3017
3018 mutex_lock(&mvm->mutex);
3019 ret = __iwl_mvm_add_chanctx(mvm, ctx);
8ca151b5 3020 mutex_unlock(&mvm->mutex);
b08c1d97 3021
8ca151b5
JB		 3022 return ret;
3023}
3024
b08c1d97
LC		 3025static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3026 struct ieee80211_chanctx_conf *ctx)
3027{
3028 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3029 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3030
3031 lockdep_assert_held(&mvm->mutex);
3032
3033 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3034}
3035
8ca151b5
JB		 3036static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3037 struct ieee80211_chanctx_conf *ctx)
3038{
3039 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 3040
3041 mutex_lock(&mvm->mutex);
b08c1d97 3042 __iwl_mvm_remove_chanctx(mvm, ctx);
8ca151b5
JB		 3043 mutex_unlock(&mvm->mutex);
3044}
3045
3046static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3047 struct ieee80211_chanctx_conf *ctx,
3048 u32 changed)
3049{
3050 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 3051 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3052 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 3053
31d385ae
IP		 3054 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3055 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3056 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2dceedae
AN		 3057 IEEE80211_CHANCTX_CHANGE_RADAR |
3058 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
31d385ae
IP		 3059 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3060 phy_ctxt->ref, changed))
3061 return;
3062
8ca151b5 3063 mutex_lock(&mvm->mutex);
4d66449a 3064 iwl_mvm_bt_coex_vif_change(mvm);
dcbc3e1a 3065 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
8ca151b5
JB		 3066 ctx->rx_chains_static,
3067 ctx->rx_chains_dynamic);
3068 mutex_unlock(&mvm->mutex);
3069}
3070
b08c1d97
LC		 3071static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3072 struct ieee80211_vif *vif,
f0c97783
LC		 3073 struct ieee80211_chanctx_conf *ctx,
3074 bool switching_chanctx)
8ca151b5 3075{
fe0f2de3
IP		 3076 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3077 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 3078 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3079 int ret;
3080
b08c1d97 3081 lockdep_assert_held(&mvm->mutex);
8ca151b5 3082
fe0f2de3 3083 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 3084
3085 switch (vif->type) {
3086 case NL80211_IFTYPE_AP:
4741dd04
LC		 3087 /* only needed if we're switching chanctx (i.e. during CSA) */
3088 if (switching_chanctx) {
bd3398e2
AO		 3089 mvmvif->ap_ibss_active = true;
3090 break;
3091 }
5023d966 3092 case NL80211_IFTYPE_ADHOC:
8ca151b5
JB		 3093 /*
3094 * The AP binding flow is handled as part of the start_ap flow
5023d966 3095 * (in bss_info_changed), similarly for IBSS.
8ca151b5
JB		 3096 */
3097 ret = 0;
b08c1d97 3098 goto out;
8ca151b5 3099 case NL80211_IFTYPE_STATION:
2533edce 3100 break;
8ca151b5 3101 case NL80211_IFTYPE_MONITOR:
2533edce
LC		 3102 /* always disable PS when a monitor interface is active */
3103 mvmvif->ps_disabled = true;
8ca151b5
JB		 3104 break;
3105 default:
3106 ret = -EINVAL;
b08c1d97 3107 goto out;
8ca151b5
JB		 3108 }
3109
3110 ret = iwl_mvm_binding_add_vif(mvm, vif);
3111 if (ret)
b08c1d97 3112 goto out;
8ca151b5
JB		 3113
3114 /*
92d85562
AB		 3115 * Power state must be updated before quotas,
3116 * otherwise fw will complain.
3117 */
999609f1 3118 iwl_mvm_power_update_mac(mvm);
92d85562
AB		 3119
3120 /* Setting the quota at this stage is only required for monitor
8ca151b5
JB		 3121 * interfaces. For the other types, the bss_info changed flow
3122 * will handle quota settings.
3123 */
3124 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 3125 mvmvif->monitor_active = true;
7754ae79 3126 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5
JB		 3127 if (ret)
3128 goto out_remove_binding;
3129 }
3130
bd3398e2 3131 /* Handle binding during CSA */
a57c688d 3132 if (vif->type == NL80211_IFTYPE_AP) {
7754ae79 3133 iwl_mvm_update_quotas(mvm, false, NULL);
3dfd3a97 3134 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
bd3398e2
AO		 3135 }
3136
4741dd04 3137 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
686e7fe1
LC		 3138 u32 duration = 2 * vif->bss_conf.beacon_int;
3139
3140 /* iwl_mvm_protect_session() reads directly from the
3141 * device (the system time), so make sure it is
3142 * available.
3143 */
3144 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3145 if (ret)
3146 goto out_remove_binding;
3147
3148 /* Protect the session to make sure we hear the first
3149 * beacon on the new channel.
3150 */
3151 iwl_mvm_protect_session(mvm, vif, duration, duration,
3152 vif->bss_conf.beacon_int / 2,
3153 true);
3154
3155 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3156
7754ae79 3157 iwl_mvm_update_quotas(mvm, false, NULL);
0ce04ce7
LC		 3158 }
3159
b08c1d97 3160 goto out;
8ca151b5 3161
b08c1d97 3162out_remove_binding:
8ca151b5 3163 iwl_mvm_binding_remove_vif(mvm, vif);
999609f1 3164 iwl_mvm_power_update_mac(mvm);
b08c1d97 3165out:
8ca151b5
JB		 3166 if (ret)
3167 mvmvif->phy_ctxt = NULL;
3168 return ret;
3169}
b08c1d97
LC		 3170static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3171 struct ieee80211_vif *vif,
3172 struct ieee80211_chanctx_conf *ctx)
8ca151b5
JB		 3173{
3174 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
b08c1d97 3175 int ret;
8ca151b5
JB		 3176
3177 mutex_lock(&mvm->mutex);
f0c97783 3178 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
b08c1d97
LC		 3179 mutex_unlock(&mvm->mutex);
3180
3181 return ret;
3182}
3183
3184static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3185 struct ieee80211_vif *vif,
f0c97783
LC		 3186 struct ieee80211_chanctx_conf *ctx,
3187 bool switching_chanctx)
b08c1d97
LC		 3188{
3189 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
f0c97783 3190 struct ieee80211_vif *disabled_vif = NULL;
b08c1d97
LC		 3191
3192 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 3193
3194 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3195
8ca151b5 3196 switch (vif->type) {
5023d966 3197 case NL80211_IFTYPE_ADHOC:
b08c1d97 3198 goto out;
8ca151b5 3199 case NL80211_IFTYPE_MONITOR:
1e1391ca 3200 mvmvif->monitor_active = false;
2533edce 3201 mvmvif->ps_disabled = false;
8ca151b5 3202 break;
bd3398e2
AO		 3203 case NL80211_IFTYPE_AP:
3204 /* This part is triggered only during CSA */
4741dd04 3205 if (!switching_chanctx || !mvmvif->ap_ibss_active)
b08c1d97 3206 goto out;
bd3398e2 3207
7ef0aab6
AO		 3208 mvmvif->csa_countdown = false;
3209
003e5236
AO		 3210 /* Set CS bit on all the stations */
3211 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3212
3213 /* Save blocked iface, the timeout is set on the next beacon */
3214 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3215
bd3398e2 3216 mvmvif->ap_ibss_active = false;
f0c97783
LC		 3217 break;
3218 case NL80211_IFTYPE_STATION:
3219 if (!switching_chanctx)
3220 break;
3221
3222 disabled_vif = vif;
3223
3dfd3a97 3224 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
f0c97783 3225 break;
8ca151b5
JB		 3226 default:
3227 break;
3228 }
3229
7754ae79 3230 iwl_mvm_update_quotas(mvm, false, disabled_vif);
1e1391ca 3231 iwl_mvm_binding_remove_vif(mvm, vif);
1c2abf72 3232
b08c1d97 3233out:
a11e144e 3234 mvmvif->phy_ctxt = NULL;
999609f1 3235 iwl_mvm_power_update_mac(mvm);
b08c1d97
LC		 3236}
3237
3238static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3239 struct ieee80211_vif *vif,
3240 struct ieee80211_chanctx_conf *ctx)
3241{
3242 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3243
3244 mutex_lock(&mvm->mutex);
f0c97783 3245 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
8ca151b5
JB		 3246 mutex_unlock(&mvm->mutex);
3247}
3248
50cc9574
LC		 3249static int
3250iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3251 struct ieee80211_vif_chanctx_switch *vifs)
b08c1d97 3252{
b08c1d97
LC		 3253 int ret;
3254
b08c1d97 3255 mutex_lock(&mvm->mutex);
f0c97783 3256 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
b08c1d97
LC		 3257 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3258
3259 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3260 if (ret) {
3261 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3262 goto out_reassign;
3263 }
3264
f0c97783
LC		 3265 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3266 true);
b08c1d97
LC		 3267 if (ret) {
3268 IWL_ERR(mvm,
3269 "failed to assign new_ctx during channel switch\n");
3270 goto out_remove;
3271 }
3272
f697267f
AN		 3273 /* we don't support TDLS during DCM - can be caused by channel switch */
3274 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3275 iwl_mvm_teardown_tdls_peers(mvm);
3276
b08c1d97
LC		 3277 goto out;
3278
3279out_remove:
3280 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3281
3282out_reassign:
6fd1fb63 3283 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
b08c1d97
LC		 3284 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3285 goto out_restart;
3286 }
3287
6fd1fb63
LC		 3288 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3289 true)) {
b08c1d97
LC		 3290 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3291 goto out_restart;
3292 }
3293
3294 goto out;
3295
3296out_restart:
3297 /* things keep failing, better restart the hw */
3298 iwl_mvm_nic_restart(mvm, false);
3299
3300out:
3301 mutex_unlock(&mvm->mutex);
50cc9574
LC		 3302
3303 return ret;
3304}
3305
48a256e8
LC		 3306static int
3307iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3308 struct ieee80211_vif_chanctx_switch *vifs)
3309{
3310 int ret;
3311
3312 mutex_lock(&mvm->mutex);
3313 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3314
3315 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3316 true);
3317 if (ret) {
3318 IWL_ERR(mvm,
3319 "failed to assign new_ctx during channel switch\n");
3320 goto out_reassign;
3321 }
3322
3323 goto out;
3324
3325out_reassign:
3326 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3327 true)) {
3328 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3329 goto out_restart;
3330 }
3331
3332 goto out;
3333
3334out_restart:
3335 /* things keep failing, better restart the hw */
3336 iwl_mvm_nic_restart(mvm, false);
3337
3338out:
3339 mutex_unlock(&mvm->mutex);
3340
3341 return ret;
3342}
3343
50cc9574
LC		 3344static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3345 struct ieee80211_vif_chanctx_switch *vifs,
3346 int n_vifs,
3347 enum ieee80211_chanctx_switch_mode mode)
3348{
3349 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3350 int ret;
3351
3352 /* we only support a single-vif right now */
3353 if (n_vifs > 1)
3354 return -EOPNOTSUPP;
3355
3356 switch (mode) {
3357 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3358 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3359 break;
3360 case CHANCTX_SWMODE_REASSIGN_VIF:
48a256e8 3361 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
50cc9574
LC		 3362 break;
3363 default:
3364 ret = -EOPNOTSUPP;
3365 break;
3366 }
3367
b08c1d97
LC		 3368 return ret;
3369}
3370
8ca151b5
JB		 3371static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3372 struct ieee80211_sta *sta,
3373 bool set)
3374{
3375 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
9d8ce6af 3376 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 3377
3378 if (!mvm_sta || !mvm_sta->vif) {
3379 IWL_ERR(mvm, "Station is not associated to a vif\n");
3380 return -EINVAL;
3381 }
3382
3383 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3384}
3385
507cadf2
DS		 3386#ifdef CONFIG_NL80211_TESTMODE
3387static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3388 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3389 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
f6c6ad42 3390 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
507cadf2
DS		 3391};
3392
3393static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3394 struct ieee80211_vif *vif,
3395 void *data, int len)
3396{
3397 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3398 int err;
3399 u32 noa_duration;
3400
3401 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3402 if (err)
3403 return err;
3404
3405 if (!tb[IWL_MVM_TM_ATTR_CMD])
3406 return -EINVAL;
3407
3408 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3409 case IWL_MVM_TM_CMD_SET_NOA:
3410 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3411 !vif->bss_conf.enable_beacon ||
3412 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3413 return -EINVAL;
3414
3415 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3416 if (noa_duration >= vif->bss_conf.beacon_int)
3417 return -EINVAL;
3418
3419 mvm->noa_duration = noa_duration;
3420 mvm->noa_vif = vif;
3421
7754ae79 3422 return iwl_mvm_update_quotas(mvm, false, NULL);
f6c6ad42
JB		 3423 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3424 /* must be associated client vif - ignore authorized */
3425 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3426 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3427 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3428 return -EINVAL;
3429
3430 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
a1022927
EG		 3431 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3432 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
507cadf2
DS		 3433 }
3434
3435 return -EOPNOTSUPP;
3436}
3437
3438static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3439 struct ieee80211_vif *vif,
3440 void *data, int len)
3441{
3442 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3443 int err;
3444
3445 mutex_lock(&mvm->mutex);
3446 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3447 mutex_unlock(&mvm->mutex);
3448
3449 return err;
3450}
3451#endif
3452
622e3f9b
LC		 3453static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3454 struct ieee80211_vif *vif,
3455 struct ieee80211_channel_switch *chsw)
3456{
3457 /* By implementing this operation, we prevent mac80211 from
3458 * starting its own channel switch timer, so that we can call
3459 * ieee80211_chswitch_done() ourselves at the right time
3460 * (which is when the absence time event starts).
3461 */
3462
3463 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3464 "dummy channel switch op\n");
3465}
3466
f028905c
LC		 3467static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3468 struct ieee80211_vif *vif,
3469 struct ieee80211_channel_switch *chsw)
bd3398e2
AO		 3470{
3471 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
664322fa 3472 struct ieee80211_vif *csa_vif;
f6c34820 3473 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
dc88b4ba 3474 u32 apply_time;
f028905c 3475 int ret;
bd3398e2
AO		 3476
3477 mutex_lock(&mvm->mutex);
664322fa 3478
81d62d5a
JB		 3479 mvmvif->csa_failed = false;
3480
6b20d774 3481 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
f028905c 3482 chsw->chandef.center_freq1);
6b20d774 3483
21023b1e 3484 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
f35d9c55 3485
6b20d774
LC		 3486 switch (vif->type) {
3487 case NL80211_IFTYPE_AP:
3488 csa_vif =
3489 rcu_dereference_protected(mvm->csa_vif,
3490 lockdep_is_held(&mvm->mutex));
3491 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3492 "Another CSA is already in progress")) {
3493 ret = -EBUSY;
3494 goto out_unlock;
3495 }
3496
3497 rcu_assign_pointer(mvm->csa_vif, vif);
7ef0aab6 3498
7ef0aab6
AO		 3499 if (WARN_ONCE(mvmvif->csa_countdown,
3500 "Previous CSA countdown didn't complete")) {
3501 ret = -EBUSY;
3502 goto out_unlock;
3503 }
3504
6b20d774 3505 break;
dc88b4ba 3506 case NL80211_IFTYPE_STATION:
4500e133
LC		 3507 /* Schedule the time event to a bit before beacon 1,
3508 * to make sure we're in the new channel when the
3509 * GO/AP arrives.
3510 */
3511 apply_time = chsw->device_timestamp +
3512 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3513 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
dc88b4ba
LC		 3514
3515 if (chsw->block_tx)
3516 iwl_mvm_csa_client_absent(mvm, vif);
3517
4500e133 3518 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
dc88b4ba 3519 apply_time);
c6e0a3e0
LC		 3520 if (mvmvif->bf_data.bf_enabled) {
3521 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3522 if (ret)
3523 goto out_unlock;
3524 }
3525
dc88b4ba 3526 break;
6b20d774
LC		 3527 default:
3528 break;
3529 }
bd3398e2 3530
f6c34820
LC		 3531 mvmvif->ps_disabled = true;
3532
3533 ret = iwl_mvm_power_update_ps(mvm);
3534 if (ret)
3535 goto out_unlock;
f028905c 3536
e198f5e7
AN		 3537 /* we won't be on this channel any longer */
3538 iwl_mvm_teardown_tdls_peers(mvm);
3539
bd3398e2
AO		 3540out_unlock:
3541 mutex_unlock(&mvm->mutex);
f028905c
LC		 3542
3543 return ret;
bd3398e2
AO		 3544}
3545
f6c34820
LC		 3546static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3547 struct ieee80211_vif *vif)
3548{
3549 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3550 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3551 int ret;
3552
3553 mutex_lock(&mvm->mutex);
3554
81d62d5a
JB		 3555 if (mvmvif->csa_failed) {
3556 mvmvif->csa_failed = false;
3557 ret = -EIO;
3558 goto out_unlock;
3559 }
3560
a57c688d
LC		 3561 if (vif->type == NL80211_IFTYPE_STATION) {
3562 struct iwl_mvm_sta *mvmsta;
3563
3564 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3565 mvmvif->ap_sta_id);
3566
3567 if (WARN_ON(!mvmsta)) {
3568 ret = -EIO;
3569 goto out_unlock;
3570 }
3571
3572 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3573
3574 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
c6e0a3e0
LC		 3575
3576 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3577 if (ret)
3578 goto out_unlock;
686e7fe1
LC		 3579
3580 iwl_mvm_stop_session_protection(mvm, vif);
a57c688d
LC		 3581 }
3582
f6c34820
LC		 3583 mvmvif->ps_disabled = false;
3584
3585 ret = iwl_mvm_power_update_ps(mvm);
3586
a57c688d 3587out_unlock:
f6c34820
LC		 3588 mutex_unlock(&mvm->mutex);
3589
3590 return ret;
3591}
3592
c5b0e7c0
EG		 3593static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3594 struct ieee80211_vif *vif, u32 queues, bool drop)
3595{
3596 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3597 struct iwl_mvm_vif *mvmvif;
3598 struct iwl_mvm_sta *mvmsta;
a0f6bf2a
AN		 3599 struct ieee80211_sta *sta;
3600 int i;
3601 u32 msk = 0;
c5b0e7c0
EG		 3602
3603 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3604 return;
3605
3606 mutex_lock(&mvm->mutex);
3607 mvmvif = iwl_mvm_vif_from_mac80211(vif);
c5b0e7c0 3608
a0f6bf2a
AN		 3609 /* flush the AP-station and all TDLS peers */
3610 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3611 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3612 lockdep_is_held(&mvm->mutex));
3613 if (IS_ERR_OR_NULL(sta))
3614 continue;
3615
3616 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3617 if (mvmsta->vif != vif)
3618 continue;
3619
3620 /* make sure only TDLS peers or the AP are flushed */
3621 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3622
3623 msk |= mvmsta->tfd_queue_msk;
480acbce 3624 }
c5b0e7c0 3625
6d440b25 3626 if (drop) {
5888a40c 3627 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
6d440b25
EG		 3628 IWL_ERR(mvm, "flush request fail\n");
3629 mutex_unlock(&mvm->mutex);
3630 } else {
3631 mutex_unlock(&mvm->mutex);
4e6c48e0 3632
6d440b25
EG		 3633 /* this can take a while, and we may need/want other operations
3634 * to succeed while doing this, so do it without the mutex held
3635 */
3636 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3637 }
c5b0e7c0
EG		 3638}
3639
91a8bcde
JB		 3640static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3641 struct survey_info *survey)
3642{
3643 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3644 int ret;
3645
3646 memset(survey, 0, sizeof(*survey));
3647
3648 /* only support global statistics right now */
3649 if (idx != 0)
3650 return -ENOENT;
3651
859d914c 3652 if (fw_has_capa(&mvm->fw->ucode_capa,
91a8bcde
JB		 3653 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3654 return -ENOENT;
3655
3656 mutex_lock(&mvm->mutex);
3657
3658 if (mvm->ucode_loaded) {
33cef925 3659 ret = iwl_mvm_request_statistics(mvm, false);
91a8bcde
JB		 3660 if (ret)
3661 goto out;
3662 }
3663
3664 survey->filled = SURVEY_INFO_TIME |
3665 SURVEY_INFO_TIME_RX |
3666 SURVEY_INFO_TIME_TX |
3667 SURVEY_INFO_TIME_SCAN;
3668 survey->time = mvm->accu_radio_stats.on_time_rf +
3669 mvm->radio_stats.on_time_rf;
3670 do_div(survey->time, USEC_PER_MSEC);
3671
3672 survey->time_rx = mvm->accu_radio_stats.rx_time +
3673 mvm->radio_stats.rx_time;
3674 do_div(survey->time_rx, USEC_PER_MSEC);
3675
3676 survey->time_tx = mvm->accu_radio_stats.tx_time +
3677 mvm->radio_stats.tx_time;
3678 do_div(survey->time_tx, USEC_PER_MSEC);
3679
3680 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3681 mvm->radio_stats.on_time_scan;
3682 do_div(survey->time_scan, USEC_PER_MSEC);
3683
10a7c028 3684 ret = 0;
91a8bcde
JB		 3685 out:
3686 mutex_unlock(&mvm->mutex);
3687 return ret;
3688}
3689
33cef925
JB		 3690static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3691 struct ieee80211_vif *vif,
3692 struct ieee80211_sta *sta,
3693 struct station_info *sinfo)
3694{
3695 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3696 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3697 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3698
859d914c
JB		 3699 if (fw_has_capa(&mvm->fw->ucode_capa,
3700 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
33cef925
JB		 3701 return;
3702
3703 /* if beacon filtering isn't on mac80211 does it anyway */
3704 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3705 return;
3706
3707 if (!vif->bss_conf.assoc)
3708 return;
3709
3710 mutex_lock(&mvm->mutex);
3711
3712 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3713 goto unlock;
3714
3715 if (iwl_mvm_request_statistics(mvm, false))
3716 goto unlock;
3717
3718 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3719 mvmvif->beacon_stats.accu_num_beacons;
3720 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3721 if (mvmvif->beacon_stats.avg_signal) {
3722 /* firmware only reports a value after RXing a few beacons */
3723 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3724 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3725 }
3726 unlock:
3727 mutex_unlock(&mvm->mutex);
3728}
3729
4203263d
EG		 3730static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3731 struct ieee80211_vif *vif,
3732 const struct ieee80211_event *event)
d42f5350 3733{
5d4f929e 3734#define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
d42f5350
EG		 3735 do { \
3736 if ((_cnt) && --(_cnt)) \
3737 break; \
5d4f929e 3738 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
d42f5350
EG		 3739 } while (0)
3740
d42f5350
EG		 3741 struct iwl_fw_dbg_trigger_tlv *trig;
3742 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
d42f5350
EG		 3743
3744 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3745 return;
3746
d42f5350
EG		 3747 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3748 trig_mlme = (void *)trig->data;
3749 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3750 return;
3751
d42f5350
EG		 3752 if (event->u.mlme.data == ASSOC_EVENT) {
3753 if (event->u.mlme.status == MLME_DENIED)
3754 CHECK_MLME_TRIGGER(mvm, trig, buf,
3755 trig_mlme->stop_assoc_denied,
3756 "DENIED ASSOC: reason %d",
3757 event->u.mlme.reason);
3758 else if (event->u.mlme.status == MLME_TIMEOUT)
3759 CHECK_MLME_TRIGGER(mvm, trig, buf,
3760 trig_mlme->stop_assoc_timeout,
3761 "ASSOC TIMEOUT");
3762 } else if (event->u.mlme.data == AUTH_EVENT) {
3763 if (event->u.mlme.status == MLME_DENIED)
3764 CHECK_MLME_TRIGGER(mvm, trig, buf,
3765 trig_mlme->stop_auth_denied,
3766 "DENIED AUTH: reason %d",
3767 event->u.mlme.reason);
3768 else if (event->u.mlme.status == MLME_TIMEOUT)
3769 CHECK_MLME_TRIGGER(mvm, trig, buf,
3770 trig_mlme->stop_auth_timeout,
3771 "AUTH TIMEOUT");
3772 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3773 CHECK_MLME_TRIGGER(mvm, trig, buf,
3774 trig_mlme->stop_rx_deauth,
3775 "DEAUTH RX %d", event->u.mlme.reason);
3776 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3777 CHECK_MLME_TRIGGER(mvm, trig, buf,
3778 trig_mlme->stop_tx_deauth,
3779 "DEAUTH TX %d", event->u.mlme.reason);
3780 }
3781#undef CHECK_MLME_TRIGGER
3782}
3783
4203263d
EG		 3784static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3785 struct ieee80211_vif *vif,
3786 const struct ieee80211_event *event)
3787{
3788 struct iwl_fw_dbg_trigger_tlv *trig;
3789 struct iwl_fw_dbg_trigger_ba *ba_trig;
3790
3791 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3792 return;
3793
3794 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3795 ba_trig = (void *)trig->data;
3796 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3797 return;
3798
3799 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3800 return;
3801
3802 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3803 "BAR received from %pM, tid %d, ssn %d",
3804 event->u.ba.sta->addr, event->u.ba.tid,
3805 event->u.ba.ssn);
3806}
3807
3808static void
3809iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3810 struct ieee80211_vif *vif,
3811 const struct ieee80211_event *event)
3812{
3813 struct iwl_fw_dbg_trigger_tlv *trig;
3814 struct iwl_fw_dbg_trigger_ba *ba_trig;
3815
3816 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3817 return;
3818
3819 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3820 ba_trig = (void *)trig->data;
3821 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3822 return;
3823
3824 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3825 return;
3826
3827 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3828 "Frame from %pM timed out, tid %d",
3829 event->u.ba.sta->addr, event->u.ba.tid);
3830}
3831
3832static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3833 struct ieee80211_vif *vif,
3834 const struct ieee80211_event *event)
3835{
3836 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3837
3838 switch (event->type) {
3839 case MLME_EVENT:
3840 iwl_mvm_event_mlme_callback(mvm, vif, event);
3841 break;
3842 case BAR_RX_EVENT:
3843 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3844 break;
3845 case BA_FRAME_TIMEOUT:
3846 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3847 break;
3848 default:
3849 break;
3850 }
3851}
3852
e5209263 3853const struct ieee80211_ops iwl_mvm_hw_ops = {
8ca151b5
JB		 3854 .tx = iwl_mvm_mac_tx,
3855 .ampdu_action = iwl_mvm_mac_ampdu_action,
3856 .start = iwl_mvm_mac_start,
cf2c92d8 3857 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
8ca151b5
JB		 3858 .stop = iwl_mvm_mac_stop,
3859 .add_interface = iwl_mvm_mac_add_interface,
3860 .remove_interface = iwl_mvm_mac_remove_interface,
3861 .config = iwl_mvm_mac_config,
e59647ea 3862 .prepare_multicast = iwl_mvm_prepare_multicast,
8ca151b5 3863 .configure_filter = iwl_mvm_configure_filter,
effd1929 3864 .config_iface_filter = iwl_mvm_config_iface_filter,
8ca151b5
JB		 3865 .bss_info_changed = iwl_mvm_bss_info_changed,
3866 .hw_scan = iwl_mvm_mac_hw_scan,
3867 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1ddbbb0c 3868 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
8ca151b5
JB		 3869 .sta_state = iwl_mvm_mac_sta_state,
3870 .sta_notify = iwl_mvm_mac_sta_notify,
3871 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3e56eadf 3872 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
8ca151b5 3873 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1f3b0ff8 3874 .sta_rc_update = iwl_mvm_sta_rc_update,
8ca151b5
JB		 3875 .conf_tx = iwl_mvm_mac_conf_tx,
3876 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
07ecd897 3877 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
c5b0e7c0 3878 .flush = iwl_mvm_mac_flush,
35a000b7
DS		 3879 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3880 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
8ca151b5
JB		 3881 .set_key = iwl_mvm_mac_set_key,
3882 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3883 .remain_on_channel = iwl_mvm_roc,
3884 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
8ca151b5
JB		 3885 .add_chanctx = iwl_mvm_add_chanctx,
3886 .remove_chanctx = iwl_mvm_remove_chanctx,
3887 .change_chanctx = iwl_mvm_change_chanctx,
3888 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3889 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
b08c1d97 3890 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
8ca151b5 3891
5023d966
JB		 3892 .start_ap = iwl_mvm_start_ap_ibss,
3893 .stop_ap = iwl_mvm_stop_ap_ibss,
3894 .join_ibss = iwl_mvm_start_ap_ibss,
3895 .leave_ibss = iwl_mvm_stop_ap_ibss,
8ca151b5
JB		 3896
3897 .set_tim = iwl_mvm_set_tim,
3898
622e3f9b 3899 .channel_switch = iwl_mvm_channel_switch,
f028905c 3900 .pre_channel_switch = iwl_mvm_pre_channel_switch,
f6c34820 3901 .post_channel_switch = iwl_mvm_post_channel_switch,
bd3398e2 3902
1d3c3f63
AN		 3903 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3904 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3905 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3906
d42f5350
EG		 3907 .event_callback = iwl_mvm_mac_event_callback,
3908
507cadf2
DS		 3909 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3910
8ca151b5
JB		 3911#ifdef CONFIG_PM_SLEEP
3912 /* look at d3.c */
3913 .suspend = iwl_mvm_suspend,
3914 .resume = iwl_mvm_resume,
3915 .set_wakeup = iwl_mvm_set_wakeup,
3916 .set_rekey_data = iwl_mvm_set_rekey_data,
3917#if IS_ENABLED(CONFIG_IPV6)
3918 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3919#endif
3920 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3921#endif
91a8bcde 3922 .get_survey = iwl_mvm_mac_get_survey,
33cef925 3923 .sta_statistics = iwl_mvm_mac_sta_statistics,
8ca151b5 3924};
Linux kernel - Deliverables
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