]> git.ipfire.org Git - thirdparty/linux.git/blame - drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
projects / thirdparty / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
rsi: use subdirectory for firmware file
[thirdparty/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.
26d6c16b
SS		 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
8ca151b5
JB		 11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * USA
25 *
26 * The full GNU General Public License is included in this distribution
410dc5aa 27 * in the file called COPYING.
8ca151b5
JB		 28 *
29 * Contact Information:
cb2f8277 30 * Intel Linux Wireless <linuxwifi@intel.com>
8ca151b5
JB		 31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32 *
33 * BSD LICENSE
34 *
51368bf7 35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
26d6c16b
SS		 36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
37 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
8ca151b5
JB		 38 * All rights reserved.
39 *
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
42 * are met:
43 *
44 * * Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * * Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in
48 * the documentation and/or other materials provided with the
49 * distribution.
50 * * Neither the name Intel Corporation nor the names of its
51 * contributors may be used to endorse or promote products derived
52 * from this software without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65 *
66 *****************************************************************************/
67#include <linux/kernel.h>
68#include <linux/slab.h>
69#include <linux/skbuff.h>
70#include <linux/netdevice.h>
71#include <linux/etherdevice.h>
f0c2646a 72#include <linux/ip.h>
2ee8f021 73#include <linux/if_arp.h>
2f89a5d7 74#include <linux/time.h>
8ca151b5 75#include <net/mac80211.h>
7b1dd048 76#include <net/ieee80211_radiotap.h>
f0c2646a 77#include <net/tcp.h>
8ca151b5
JB		 78
79#include "iwl-op-mode.h"
80#include "iwl-io.h"
81#include "mvm.h"
82#include "sta.h"
83#include "time-event.h"
84#include "iwl-eeprom-parse.h"
8ca151b5 85#include "iwl-phy-db.h"
507cadf2 86#include "testmode.h"
655e6d6d
EG		 87#include "iwl-fw-error-dump.h"
88#include "iwl-prph.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 232 spin_lock_bh(&mvm->refs_lock);
16c45822
SS		 233 if (WARN_ON(!mvm->refs[ref_type])) {
234 spin_unlock_bh(&mvm->refs_lock);
235 return;
236 }
237 mvm->refs[ref_type]--;
576eeee9 238 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 239 iwl_trans_unref(mvm->trans);
240}
241
576eeee9
EP		 242static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
243 enum iwl_mvm_ref_type except_ref)
7498cf4c 244{
576eeee9 245 int i, j;
7498cf4c 246
7bb426ea 247 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 248 return;
249
576eeee9
EP		 250 spin_lock_bh(&mvm->refs_lock);
251 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
252 if (except_ref == i || !mvm->refs[i])
7498cf4c
EP		 253 continue;
254
576eeee9
EP		 255 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
256 i, mvm->refs[i]);
257 for (j = 0; j < mvm->refs[i]; j++)
258 iwl_trans_unref(mvm->trans);
259 mvm->refs[i] = 0;
7498cf4c 260 }
576eeee9 261 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 262}
263
f4cf8680
EP		 264bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
265{
266 int i;
267 bool taken = false;
268
269 if (!iwl_mvm_is_d0i3_supported(mvm))
270 return true;
271
272 spin_lock_bh(&mvm->refs_lock);
273 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
274 if (mvm->refs[i]) {
275 taken = true;
276 break;
277 }
278 }
279 spin_unlock_bh(&mvm->refs_lock);
280
281 return taken;
282}
283
576eeee9 284int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
d40fc489
GG		 285{
286 iwl_mvm_ref(mvm, ref_type);
287
288 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
289 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
290 HZ)) {
291 WARN_ON_ONCE(1);
292 iwl_mvm_unref(mvm, ref_type);
293 return -EIO;
294 }
295
296 return 0;
297}
298
fe0f2de3
IP		 299static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
300{
301 int i;
302
303 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
304 for (i = 0; i < NUM_PHY_CTX; i++) {
305 mvm->phy_ctxts[i].id = i;
306 mvm->phy_ctxts[i].ref = 0;
307 }
308}
309
88931cc9 310struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
8ba2d7a1 311 const char *alpha2,
47c8b154
JD		 312 enum iwl_mcc_source src_id,
313 bool *changed)
88931cc9
AN		 314{
315 struct ieee80211_regdomain *regd = NULL;
316 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
317 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
318 struct iwl_mcc_update_resp *resp;
319
320 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
321
8ba2d7a1 322 lockdep_assert_held(&mvm->mutex);
88931cc9 323
8ba2d7a1 324 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
88931cc9
AN		 325 if (IS_ERR_OR_NULL(resp)) {
326 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
b8c474d9 327 PTR_ERR_OR_ZERO(resp));
8ba2d7a1 328 goto out;
88931cc9
AN		 329 }
330
47c8b154
JD		 331 if (changed)
332 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
333
162ee3c9 334 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
88931cc9
AN		 335 __le32_to_cpu(resp->n_channels),
336 resp->channels,
337 __le16_to_cpu(resp->mcc));
8ba2d7a1
EH		 338 /* Store the return source id */
339 src_id = resp->source_id;
88931cc9
AN		 340 kfree(resp);
341 if (IS_ERR_OR_NULL(regd)) {
342 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
b8c474d9 343 PTR_ERR_OR_ZERO(regd));
8ba2d7a1 344 goto out;
88931cc9
AN		 345 }
346
8ba2d7a1
EH		 347 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
348 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
88931cc9 349 mvm->lar_regdom_set = true;
8ba2d7a1 350 mvm->mcc_src = src_id;
88931cc9 351
8ba2d7a1 352out:
88931cc9
AN		 353 return regd;
354}
355
47c8b154
JD		 356void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
357{
358 bool changed;
359 struct ieee80211_regdomain *regd;
360
361 if (!iwl_mvm_is_lar_supported(mvm))
362 return;
363
364 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
365 if (!IS_ERR_OR_NULL(regd)) {
366 /* only update the regulatory core if changed */
367 if (changed)
368 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
369
370 kfree(regd);
371 }
372}
373
374struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
375 bool *changed)
8ba2d7a1
EH		 376{
377 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
378 iwl_mvm_is_wifi_mcc_supported(mvm) ?
379 MCC_SOURCE_GET_CURRENT :
47c8b154 380 MCC_SOURCE_OLD_FW, changed);
8ba2d7a1
EH		 381}
382
383int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
384{
385 enum iwl_mcc_source used_src;
386 struct ieee80211_regdomain *regd;
b6e160ab
AN		 387 int ret;
388 bool changed;
8ba2d7a1
EH		 389 const struct ieee80211_regdomain *r =
390 rtnl_dereference(mvm->hw->wiphy->regd);
391
392 if (!r)
b6e160ab 393 return -ENOENT;
8ba2d7a1
EH		 394
395 /* save the last source in case we overwrite it below */
396 used_src = mvm->mcc_src;
397 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
398 /* Notify the firmware we support wifi location updates */
47c8b154 399 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
8ba2d7a1
EH		 400 if (!IS_ERR_OR_NULL(regd))
401 kfree(regd);
402 }
403
404 /* Now set our last stored MCC and source */
b6e160ab
AN		 405 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
406 &changed);
8ba2d7a1
EH		 407 if (IS_ERR_OR_NULL(regd))
408 return -EIO;
409
b6e160ab
AN		 410 /* update cfg80211 if the regdomain was changed */
411 if (changed)
412 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
413 else
414 ret = 0;
8ba2d7a1 415
b6e160ab
AN		 416 kfree(regd);
417 return ret;
8ba2d7a1
EH		 418}
419
8ca151b5
JB		 420int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
421{
422 struct ieee80211_hw *hw = mvm->hw;
831e85f3 423 int num_mac, ret, i;
5f4c02e2
JB		 424 static const u32 mvm_ciphers[] = {
425 WLAN_CIPHER_SUITE_WEP40,
426 WLAN_CIPHER_SUITE_WEP104,
427 WLAN_CIPHER_SUITE_TKIP,
428 WLAN_CIPHER_SUITE_CCMP,
429 };
8ca151b5
JB		 430
431 /* Tell mac80211 our characteristics */
30686bf7
JB		 432 ieee80211_hw_set(hw, SIGNAL_DBM);
433 ieee80211_hw_set(hw, SPECTRUM_MGMT);
434 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
435 ieee80211_hw_set(hw, QUEUE_CONTROL);
436 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
437 ieee80211_hw_set(hw, SUPPORTS_PS);
438 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
439 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
440 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
441 ieee80211_hw_set(hw, CONNECTION_MONITOR);
442 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
443 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
444 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
909ddf0b 445 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
30433d3b 446 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
b915c101
SS		 447 if (iwl_mvm_has_new_rx_api(mvm))
448 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
65e25482
JB		 449 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_STA_PM_NOTIF))
450 ieee80211_hw_set(hw, AP_LINK_PS);
8ca151b5 451
80938abc
JB		 452 if (mvm->trans->num_rx_queues > 1)
453 ieee80211_hw_set(hw, USES_RSS);
454
2d7cf549
JB		 455 if (mvm->trans->max_skb_frags)
456 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
457
cf961e16
LK		 458 if (!iwl_mvm_is_dqa_supported(mvm))
459 hw->queues = mvm->first_agg_queue;
460 else
461 hw->queues = IEEE80211_MAX_QUEUES;
398e8c6c 462 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
7b1dd048
EG		 463 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
464 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
339b3086
ES		 465 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
466 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
371a17ed
JB		 467
468 hw->radiotap_timestamp.units_pos =
469 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
470 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
471 /* this is the case for CCK frames, it's better (only 8) for OFDM */
472 hw->radiotap_timestamp.accuracy = 22;
473
8ca151b5 474 hw->rate_control_algorithm = "iwl-mvm-rs";
848955cc
JB		 475 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
476 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
8ca151b5 477
8e160ab8 478 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
5f4c02e2
JB		 479 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
480 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
481 hw->wiphy->cipher_suites = mvm->ciphers;
482
2a53d166
AB		 483 if (iwl_mvm_has_new_rx_api(mvm)) {
484 mvm->ciphers[hw->wiphy->n_cipher_suites] =
485 WLAN_CIPHER_SUITE_GCMP;
486 hw->wiphy->n_cipher_suites++;
487 mvm->ciphers[hw->wiphy->n_cipher_suites] =
488 WLAN_CIPHER_SUITE_GCMP_256;
489 hw->wiphy->n_cipher_suites++;
490 }
491
4b87e5af
LC		 492 /* Enable 11w if software crypto is not enabled (as the
493 * firmware will interpret some mgmt packets, so enabling it
494 * with software crypto isn't safe).
8ca151b5 495 */
4b87e5af 496 if (!iwlwifi_mod_params.sw_crypto) {
30686bf7 497 ieee80211_hw_set(hw, MFP_CAPABLE);
5f4c02e2
JB		 498 mvm->ciphers[hw->wiphy->n_cipher_suites] =
499 WLAN_CIPHER_SUITE_AES_CMAC;
500 hw->wiphy->n_cipher_suites++;
8e160ab8
AB		 501 if (iwl_mvm_has_new_rx_api(mvm)) {
502 mvm->ciphers[hw->wiphy->n_cipher_suites] =
503 WLAN_CIPHER_SUITE_BIP_GMAC_128;
504 hw->wiphy->n_cipher_suites++;
505 mvm->ciphers[hw->wiphy->n_cipher_suites] =
506 WLAN_CIPHER_SUITE_BIP_GMAC_256;
507 hw->wiphy->n_cipher_suites++;
508 }
5f4c02e2
JB		 509 }
510
511 /* currently FW API supports only one optional cipher scheme */
512 if (mvm->fw->cs[0].cipher) {
24ddddf3
JB		 513 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
514 struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
515
5f4c02e2 516 mvm->hw->n_cipher_schemes = 1;
24ddddf3
JB		 517
518 cs->cipher = le32_to_cpu(fwcs->cipher);
519 cs->iftype = BIT(NL80211_IFTYPE_STATION);
520 cs->hdr_len = fwcs->hdr_len;
521 cs->pn_len = fwcs->pn_len;
522 cs->pn_off = fwcs->pn_off;
523 cs->key_idx_off = fwcs->key_idx_off;
524 cs->key_idx_mask = fwcs->key_idx_mask;
525 cs->key_idx_shift = fwcs->key_idx_shift;
526 cs->mic_len = fwcs->mic_len;
527
528 mvm->hw->cipher_schemes = mvm->cs;
529 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
5f4c02e2
JB		 530 hw->wiphy->n_cipher_suites++;
531 }
8ca151b5 532
30686bf7 533 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
1f940386
LC		 534 hw->wiphy->features |=
535 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
3db93420
JB		 536 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
537 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
fb98be5e 538
8ca151b5
JB		 539 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
540 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
fe0f2de3 541 hw->chanctx_data_size = sizeof(u16);
8ca151b5
JB		 542
543 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3c15a0fb
JB		 544 BIT(NL80211_IFTYPE_P2P_CLIENT) |
545 BIT(NL80211_IFTYPE_AP) |
546 BIT(NL80211_IFTYPE_P2P_GO) |
c13b1725
EG		 547 BIT(NL80211_IFTYPE_P2P_DEVICE) |
548 BIT(NL80211_IFTYPE_ADHOC);
5023d966 549
a2f73b6c 550 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
8ba2d7a1
EH		 551 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
552 if (iwl_mvm_is_lar_supported(mvm))
553 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
554 else
555 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
556 REGULATORY_DISABLE_BEACON_HINTS;
8ca151b5 557
4b87e5af 558 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
94bbed72 559 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
bd3398e2 560
8ca151b5
JB		 561 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
562 hw->wiphy->n_iface_combinations =
563 ARRAY_SIZE(iwl_mvm_iface_combinations);
564
c451e6d4 565 hw->wiphy->max_remain_on_channel_duration = 10000;
8ca151b5 566 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
f1a68542
EG		 567 /* we can compensate an offset of up to 3 channels = 15 MHz */
568 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
8ca151b5
JB		 569
570 /* Extract MAC address */
571 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
572 hw->wiphy->addresses = mvm->addresses;
573 hw->wiphy->n_addresses = 1;
831e85f3
IP		 574
575 /* Extract additional MAC addresses if available */
576 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
577 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
578
579 for (i = 1; i < num_mac; i++) {
580 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
8ca151b5 581 ETH_ALEN);
831e85f3 582 mvm->addresses[i].addr[5]++;
8ca151b5
JB		 583 hw->wiphy->n_addresses++;
584 }
585
fe0f2de3
IP		 586 iwl_mvm_reset_phy_ctxts(mvm);
587
999d2568 588 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
20f1a5de 589
8ca151b5
JB		 590 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
591
c7d42480 592 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
507e4cda
LC		 593 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
594 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
595
859d914c 596 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
507e4cda
LC		 597 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
598 else
599 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
600
57fbcce3
JB		 601 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
602 hw->wiphy->bands[NL80211_BAND_2GHZ] =
603 &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
604 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
605 hw->wiphy->bands[NL80211_BAND_5GHZ] =
606 &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
8ca151b5 607
859d914c
JB		 608 if (fw_has_capa(&mvm->fw->ucode_capa,
609 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
610 fw_has_api(&mvm->fw->ucode_capa,
611 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
57fbcce3 612 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
3d44eebf
ES		 613 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
614 }
615
8ca151b5
JB		 616 hw->wiphy->hw_version = mvm->trans->hw_id;
617
ade50652 618 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
8ca151b5
JB		 619 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
620 else
621 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
622
ca986ad9 623 hw->wiphy->max_sched_scan_reqs = 1;
9954b37c
EG		 624 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
625 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
626 /* we create the 802.11 header and zero length SSID IE. */
627 hw->wiphy->max_sched_scan_ie_len =
628 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
cd55ccea
AS		 629 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
630 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
631
632 /*
633 * the firmware uses u8 for num of iterations, but 0xff is saved for
634 * infinite loop, so the maximum number of iterations is actually 254.
635 */
636 hw->wiphy->max_sched_scan_plan_iterations = 254;
35a000b7 637
8ca151b5 638 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
ab480030 639 NL80211_FEATURE_LOW_PRIORITY_SCAN |
0d8614b4 640 NL80211_FEATURE_P2P_GO_OPPPS |
a904a08b 641 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
0d8614b4 642 NL80211_FEATURE_DYNAMIC_SMPS |
9b5452fd
EG		 643 NL80211_FEATURE_STATIC_SMPS |
644 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
8ca151b5 645
859d914c
JB		 646 if (fw_has_capa(&mvm->fw->ucode_capa,
647 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
f1daa00e 648 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
859d914c
JB		 649 if (fw_has_capa(&mvm->fw->ucode_capa,
650 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
226bcd48 651 hw->wiphy->features |= NL80211_FEATURE_QUIET;
f1daa00e 652
859d914c
JB		 653 if (fw_has_capa(&mvm->fw->ucode_capa,
654 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
73897bd1
AO		 655 hw->wiphy->features |=
656 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
657
859d914c
JB		 658 if (fw_has_capa(&mvm->fw->ucode_capa,
659 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
73897bd1
AO		 660 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
661
aacf8f18
AS		 662 if (fw_has_api(&mvm->fw->ucode_capa,
663 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
664 wiphy_ext_feature_set(hw->wiphy,
665 NL80211_EXT_FEATURE_SCAN_START_TIME);
666 wiphy_ext_feature_set(hw->wiphy,
667 NL80211_EXT_FEATURE_BSS_PARENT_TSF);
668 wiphy_ext_feature_set(hw->wiphy,
669 NL80211_EXT_FEATURE_SET_SCAN_DWELL);
670 }
671
8ca151b5
JB		 672 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
673
674#ifdef CONFIG_PM_SLEEP
d15a747f
EP		 675 if (iwl_mvm_is_d0i3_supported(mvm) &&
676 device_can_wakeup(mvm->trans->dev)) {
677 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
678 hw->wiphy->wowlan = &mvm->wowlan;
91742449
EP		 679 }
680
eef187a7 681 if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec &&
8ca151b5
JB		 682 mvm->trans->ops->d3_suspend &&
683 mvm->trans->ops->d3_resume &&
684 device_can_wakeup(mvm->trans->dev)) {
91742449
EP		 685 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
686 WIPHY_WOWLAN_DISCONNECT |
687 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
688 WIPHY_WOWLAN_RFKILL_RELEASE |
689 WIPHY_WOWLAN_NET_DETECT;
8ca151b5 690 if (!iwlwifi_mod_params.sw_crypto)
964dc9e2
JB		 691 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
692 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
693 WIPHY_WOWLAN_4WAY_HANDSHAKE;
694
695 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
696 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
697 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
c55385f5 698 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
964dc9e2
JB		 699 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
700 hw->wiphy->wowlan = &mvm->wowlan;
8ca151b5
JB		 701 }
702#endif
703
77736923
EP		 704#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
705 /* assign default bcast filtering configuration */
706 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
707#endif
708
8ca151b5
JB		 709 ret = iwl_mvm_leds_init(mvm);
710 if (ret)
711 return ret;
712
859d914c
JB		 713 if (fw_has_capa(&mvm->fw->ucode_capa,
714 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
d8f1c515
AN		 715 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
716 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
7c4f0843 717 ieee80211_hw_set(hw, TDLS_WIDER_BW);
d8f1c515
AN		 718 }
719
859d914c
JB		 720 if (fw_has_capa(&mvm->fw->ucode_capa,
721 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
1d3c3f63
AN		 722 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
723 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
724 }
725
93190fb0 726 hw->netdev_features |= mvm->cfg->features;
5e6a98dc
SS		 727 if (!iwl_mvm_is_csum_supported(mvm)) {
728 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
729 NETIF_F_RXCSUM);
730 /* We may support SW TX CSUM */
731 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
732 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
733 }
41837ca9 734
b7327d89
EG		 735 ret = ieee80211_register_hw(mvm->hw);
736 if (ret)
737 iwl_mvm_leds_exit(mvm);
738
91b08c2d
AE		 739 if (mvm->cfg->vht_mu_mimo_supported)
740 wiphy_ext_feature_set(hw->wiphy,
741 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
742
b7327d89 743 return ret;
8ca151b5
JB		 744}
745
b2492501
AN		 746static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
747 struct ieee80211_sta *sta,
748 struct sk_buff *skb)
749{
750 struct iwl_mvm_sta *mvmsta;
751 bool defer = false;
752
753 /*
754 * double check the IN_D0I3 flag both before and after
755 * taking the spinlock, in order to prevent taking
756 * the spinlock when not needed.
757 */
758 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
759 return false;
760
761 spin_lock(&mvm->d0i3_tx_lock);
762 /*
763 * testing the flag again ensures the skb dequeue
764 * loop (on d0i3 exit) hasn't run yet.
765 */
766 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
767 goto out;
768
769 mvmsta = iwl_mvm_sta_from_mac80211(sta);
0ae98812 770 if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
b2492501
AN		 771 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
772 goto out;
773
774 __skb_queue_tail(&mvm->d0i3_tx, skb);
775 ieee80211_stop_queues(mvm->hw);
776
777 /* trigger wakeup */
778 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
779 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
780
781 defer = true;
782out:
783 spin_unlock(&mvm->d0i3_tx_lock);
784 return defer;
785}
786
8ca151b5
JB		 787static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
788 struct ieee80211_tx_control *control,
789 struct sk_buff *skb)
790{
791 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3e56eadf
JB		 792 struct ieee80211_sta *sta = control->sta;
793 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
794 struct ieee80211_hdr *hdr = (void *)skb->data;
8ca151b5 795
9ee718aa
EL		 796 if (iwl_mvm_is_radio_killed(mvm)) {
797 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
8ca151b5
JB		 798 goto drop;
799 }
800
398e8c6c 801 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
a6cc5163
MG		 802 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
803 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
8ca151b5
JB		 804 goto drop;
805
3e56eadf
JB		 806 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
807 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
808 ieee80211_is_mgmt(hdr->frame_control) &&
809 !ieee80211_is_deauth(hdr->frame_control) &&
810 !ieee80211_is_disassoc(hdr->frame_control) &&
811 !ieee80211_is_action(hdr->frame_control)))
812 sta = NULL;
813
814 if (sta) {
b2492501
AN		 815 if (iwl_mvm_defer_tx(mvm, sta, skb))
816 return;
3e56eadf 817 if (iwl_mvm_tx_skb(mvm, skb, sta))
8ca151b5
JB		 818 goto drop;
819 return;
820 }
821
822 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
823 goto drop;
824 return;
825 drop:
826 ieee80211_free_txskb(hw, skb);
827}
828
205e2210
EG		 829static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
830{
831 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
832 return false;
833 return true;
834}
835
836static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
837{
838 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
839 return false;
840 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
841 return true;
842
843 /* enabled by default */
844 return true;
845}
846
4203263d
EG		 847#define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
848 do { \
849 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
850 break; \
851 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
852 } while (0)
853
854static void
855iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
856 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
857 enum ieee80211_ampdu_mlme_action action)
858{
859 struct iwl_fw_dbg_trigger_tlv *trig;
860 struct iwl_fw_dbg_trigger_ba *ba_trig;
861
862 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
863 return;
864
865 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
866 ba_trig = (void *)trig->data;
867
868 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
869 return;
870
871 switch (action) {
872 case IEEE80211_AMPDU_TX_OPERATIONAL: {
873 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
874 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
875
876 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
877 "TX AGG START: MAC %pM tid %d ssn %d\n",
878 sta->addr, tid, tid_data->ssn);
879 break;
880 }
881 case IEEE80211_AMPDU_TX_STOP_CONT:
882 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
883 "TX AGG STOP: MAC %pM tid %d\n",
884 sta->addr, tid);
885 break;
886 case IEEE80211_AMPDU_RX_START:
887 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
888 "RX AGG START: MAC %pM tid %d ssn %d\n",
889 sta->addr, tid, rx_ba_ssn);
890 break;
891 case IEEE80211_AMPDU_RX_STOP:
892 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
893 "RX AGG STOP: MAC %pM tid %d\n",
894 sta->addr, tid);
895 break;
896 default:
897 break;
898 }
899}
900
8ca151b5
JB		 901static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
902 struct ieee80211_vif *vif,
50ea05ef 903 struct ieee80211_ampdu_params *params)
8ca151b5
JB		 904{
905 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
906 int ret;
b2492501 907 bool tx_agg_ref = false;
50ea05ef
SS		 908 struct ieee80211_sta *sta = params->sta;
909 enum ieee80211_ampdu_mlme_action action = params->action;
910 u16 tid = params->tid;
911 u16 *ssn = &params->ssn;
912 u8 buf_size = params->buf_size;
bb81bb68 913 bool amsdu = params->amsdu;
10b2b201 914 u16 timeout = params->timeout;
8ca151b5
JB		 915
916 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
917 sta->addr, tid, action);
918
919 if (!(mvm->nvm_data->sku_cap_11n_enable))
920 return -EACCES;
921
b2492501 922 /* return from D0i3 before starting a new Tx aggregation */
9256c205
EP		 923 switch (action) {
924 case IEEE80211_AMPDU_TX_START:
925 case IEEE80211_AMPDU_TX_STOP_CONT:
926 case IEEE80211_AMPDU_TX_STOP_FLUSH:
927 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
928 case IEEE80211_AMPDU_TX_OPERATIONAL:
b2492501 929 /*
9256c205
EP		 930 * for tx start, wait synchronously until D0i3 exit to
931 * get the correct sequence number for the tid.
932 * additionally, some other ampdu actions use direct
933 * target access, which is not handled automatically
934 * by the trans layer (unlike commands), so wait for
935 * d0i3 exit in these cases as well.
b2492501 936 */
d40fc489
GG		 937 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
938 if (ret)
939 return ret;
940
941 tx_agg_ref = true;
9256c205
EP		 942 break;
943 default:
944 break;
b2492501
AN		 945 }
946
8ca151b5
JB		 947 mutex_lock(&mvm->mutex);
948
949 switch (action) {
950 case IEEE80211_AMPDU_RX_START:
205e2210 951 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
8ca151b5
JB		 952 ret = -EINVAL;
953 break;
954 }
10b2b201
SS		 955 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
956 timeout);
8ca151b5
JB		 957 break;
958 case IEEE80211_AMPDU_RX_STOP:
10b2b201
SS		 959 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
960 timeout);
8ca151b5
JB		 961 break;
962 case IEEE80211_AMPDU_TX_START:
205e2210 963 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
5d158efa
EG		 964 ret = -EINVAL;
965 break;
966 }
8ca151b5
JB		 967 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
968 break;
969 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 970 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
971 break;
8ca151b5
JB		 972 case IEEE80211_AMPDU_TX_STOP_FLUSH:
973 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 974 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 975 break;
976 case IEEE80211_AMPDU_TX_OPERATIONAL:
bb81bb68
EG		 977 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
978 buf_size, amsdu);
8ca151b5
JB		 979 break;
980 default:
981 WARN_ON_ONCE(1);
982 ret = -EINVAL;
983 break;
984 }
4203263d
EG		 985
986 if (!ret) {
987 u16 rx_ba_ssn = 0;
988
989 if (action == IEEE80211_AMPDU_RX_START)
990 rx_ba_ssn = *ssn;
991
992 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
993 rx_ba_ssn, action);
994 }
8ca151b5
JB		 995 mutex_unlock(&mvm->mutex);
996
b2492501
AN		 997 /*
998 * If the tid is marked as started, we won't use it for offloaded
999 * traffic on the next D0i3 entry. It's safe to unref.
1000 */
1001 if (tx_agg_ref)
1002 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
1003
8ca151b5
JB		 1004 return ret;
1005}
1006
1007static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1008 struct ieee80211_vif *vif)
1009{
1010 struct iwl_mvm *mvm = data;
1011 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1012
1013 mvmvif->uploaded = false;
0ae98812 1014 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
8ca151b5 1015
8ca151b5
JB		 1016 spin_lock_bh(&mvm->time_event_lock);
1017 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1018 spin_unlock_bh(&mvm->time_event_lock);
1019
fe0f2de3 1020 mvmvif->phy_ctxt = NULL;
8a275bad 1021 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
8ca151b5
JB		 1022}
1023
1024static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1025{
58629d9d
JB		 1026 /* clear the D3 reconfig, we only need it to avoid dumping a
1027 * firmware coredump on reconfiguration, we shouldn't do that
1028 * on D3->D0 transition
1029 */
b6eaa45a
EG		 1030 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1031 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
58629d9d 1032 iwl_mvm_fw_error_dump(mvm);
b6eaa45a 1033 }
1bd3cbc1 1034
744cb695
EP		 1035 /* cleanup all stale references (scan, roc), but keep the
1036 * ucode_down ref until reconfig is complete
1037 */
1038 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1039
fcb6b92a 1040 iwl_mvm_stop_device(mvm);
8ca151b5 1041
9af91f46 1042 mvm->scan_status = 0;
b1873300 1043 mvm->ps_disabled = false;
31b8b343 1044 mvm->calibrating = false;
8ca151b5
JB		 1045
1046 /* just in case one was running */
305d236e 1047 iwl_mvm_cleanup_roc_te(mvm);
8ca151b5
JB		 1048 ieee80211_remain_on_channel_expired(mvm->hw);
1049
737719fe
AN		 1050 /*
1051 * cleanup all interfaces, even inactive ones, as some might have
1052 * gone down during the HW restart
1053 */
1054 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
8ca151b5 1055
fe0f2de3 1056 mvm->p2p_device_vif = NULL;
0ae98812 1057 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
fe0f2de3
IP		 1058
1059 iwl_mvm_reset_phy_ctxts(mvm);
9c3deeb5 1060 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
8ca151b5 1061 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
24afba76 1062 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
a0f6bf2a 1063 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
8a275bad 1064 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
8a275bad 1065 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
8ca151b5
JB		 1066
1067 ieee80211_wake_queues(mvm->hw);
1068
228670b2
EP		 1069 /* clear any stale d0i3 state */
1070 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1071
8ca151b5 1072 mvm->vif_count = 0;
113a0447 1073 mvm->rx_ba_sessions = 0;
d2709ad7 1074 mvm->fw_dbg_conf = FW_DBG_INVALID;
91a8bcde
JB		 1075
1076 /* keep statistics ticking */
1077 iwl_mvm_accu_radio_stats(mvm);
8ca151b5
JB		 1078}
1079
a0a09243 1080int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
8ca151b5 1081{
8ca151b5
JB		 1082 int ret;
1083
a0a09243 1084 lockdep_assert_held(&mvm->mutex);
8ca151b5 1085
a42b2af3
LC		 1086 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1087 /* Clean up some internal and mac80211 state on restart */
8ca151b5 1088 iwl_mvm_restart_cleanup(mvm);
a42b2af3
LC		 1089 } else {
1090 /* Hold the reference to prevent runtime suspend while
1091 * the start procedure runs. It's a bit confusing
1092 * that the UCODE_DOWN reference is taken, but it just
1093 * means "UCODE is not UP yet". ( TODO: rename this
1094 * reference).
1095 */
1096 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1097 }
8ca151b5 1098 ret = iwl_mvm_up(mvm);
c47af22a
JB		 1099
1100 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1101 /* Something went wrong - we need to finish some cleanup
1102 * that normally iwl_mvm_mac_restart_complete() below
1103 * would do.
1104 */
1105 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1106 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1107 }
1108
a0a09243
LC		 1109 return ret;
1110}
1111
1112static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1113{
1114 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1115 int ret;
1116
37948fcf
EP		 1117 /* Some hw restart cleanups must not hold the mutex */
1118 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1119 /*
1120 * Make sure we are out of d0i3. This is needed
1121 * to make sure the reference accounting is correct
1122 * (and there is no stale d0i3_exit_work).
1123 */
1124 wait_event_timeout(mvm->d0i3_exit_waitq,
1125 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1126 &mvm->status),
1127 HZ);
1128 }
1129
a0a09243
LC		 1130 mutex_lock(&mvm->mutex);
1131 ret = __iwl_mvm_mac_start(mvm);
8ca151b5
JB		 1132 mutex_unlock(&mvm->mutex);
1133
1134 return ret;
1135}
1136
cf2c92d8 1137static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
8ca151b5 1138{
8ca151b5
JB		 1139 int ret;
1140
1141 mutex_lock(&mvm->mutex);
1142
1143 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
b2492501 1144 iwl_mvm_d0i3_enable_tx(mvm, NULL);
e7afe89f 1145 ret = iwl_mvm_update_quotas(mvm, true, NULL);
8ca151b5
JB		 1146 if (ret)
1147 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1148 ret);
1149
7498cf4c
EP		 1150 /* allow transport/FW low power modes */
1151 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1152
cbd2ae2d
AN		 1153 /*
1154 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1155 * of packets the FW sent out, so we must reconnect.
1156 */
1157 iwl_mvm_teardown_tdls_peers(mvm);
1158
8ca151b5
JB		 1159 mutex_unlock(&mvm->mutex);
1160}
1161
088070a2
EP		 1162static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1163{
b7282643
LC		 1164 if (iwl_mvm_is_d0i3_supported(mvm) &&
1165 iwl_mvm_enter_d0i3_on_suspend(mvm))
1166 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1167 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1168 &mvm->status),
1169 HZ),
1170 "D0i3 exit on resume timed out\n");
088070a2
EP		 1171}
1172
cf2c92d8
EP		 1173static void
1174iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1175 enum ieee80211_reconfig_type reconfig_type)
1176{
1177 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1178
1179 switch (reconfig_type) {
1180 case IEEE80211_RECONFIG_TYPE_RESTART:
1181 iwl_mvm_restart_complete(mvm);
1182 break;
1183 case IEEE80211_RECONFIG_TYPE_SUSPEND:
088070a2 1184 iwl_mvm_resume_complete(mvm);
cf2c92d8
EP		 1185 break;
1186 }
1187}
1188
a0a09243 1189void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
8ca151b5 1190{
a0a09243 1191 lockdep_assert_held(&mvm->mutex);
7498cf4c 1192
91a8bcde
JB		 1193 /* firmware counters are obviously reset now, but we shouldn't
1194 * partially track so also clear the fw_reset_accu counters.
1195 */
1196 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1197
8ca151b5
JB		 1198 /* async_handlers_wk is now blocked */
1199
1200 /*
1201 * The work item could be running or queued if the
1202 * ROC time event stops just as we get here.
1203 */
c779273b 1204 flush_work(&mvm->roc_done_wk);
8ca151b5 1205
fcb6b92a 1206 iwl_mvm_stop_device(mvm);
8ca151b5
JB		 1207
1208 iwl_mvm_async_handlers_purge(mvm);
1209 /* async_handlers_list is empty and will stay empty: HW is stopped */
1210
1211 /* the fw is stopped, the aux sta is dead: clean up driver state */
712b24ad 1212 iwl_mvm_del_aux_sta(mvm);
8ca151b5 1213
0a79a0c0
EP		 1214 /*
1215 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1216 * won't be called in this case).
8b2b9fbf
AN		 1217 * But make sure to cleanup interfaces that have gone down before/during
1218 * HW restart was requested.
0a79a0c0 1219 */
8b2b9fbf
AN		 1220 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1221 ieee80211_iterate_interfaces(mvm->hw, 0,
1222 iwl_mvm_cleanup_iterator, mvm);
0a79a0c0 1223
963221be
AB		 1224 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1225 * make sure there's nothing left there and warn if any is found.
1226 */
859d914c 1227 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
963221be
AB		 1228 int i;
1229
507e4cda 1230 for (i = 0; i < mvm->max_scans; i++) {
6185af2a
LC		 1231 if (WARN_ONCE(mvm->scan_uid_status[i],
1232 "UMAC scan UID %d status was not cleaned\n",
1233 i))
1234 mvm->scan_uid_status[i] = 0;
963221be
AB		 1235 }
1236 }
a0a09243 1237}
bc44886d 1238
a0a09243
LC		 1239static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1240{
1241 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1242
1243 flush_work(&mvm->d0i3_exit_work);
1244 flush_work(&mvm->async_handlers_wk);
24afba76 1245 flush_work(&mvm->add_stream_wk);
d2709ad7 1246 cancel_delayed_work_sync(&mvm->fw_dump_wk);
d3a108a4 1247 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
69e04642 1248 cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
b6eaa45a 1249 iwl_mvm_free_fw_dump_desc(mvm);
a0a09243
LC		 1250
1251 mutex_lock(&mvm->mutex);
1252 __iwl_mvm_mac_stop(mvm);
8ca151b5
JB		 1253 mutex_unlock(&mvm->mutex);
1254
1255 /*
1256 * The worker might have been waiting for the mutex, let it run and
1257 * discover that its list is now empty.
1258 */
1259 cancel_work_sync(&mvm->async_handlers_wk);
1260}
1261
fe0f2de3
IP		 1262static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1263{
1264 u16 i;
1265
1266 lockdep_assert_held(&mvm->mutex);
1267
1268 for (i = 0; i < NUM_PHY_CTX; i++)
1269 if (!mvm->phy_ctxts[i].ref)
1270 return &mvm->phy_ctxts[i];
1271
1272 IWL_ERR(mvm, "No available PHY context\n");
1273 return NULL;
1274}
1275
d44c3fe6
AA		 1276static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1277 s16 tx_power)
1278{
1279 struct iwl_dev_tx_power_cmd cmd = {
4b87e5af
LC		 1280 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1281 .v3.mac_context_id =
d44c3fe6 1282 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
4b87e5af 1283 .v3.pwr_restriction = cpu_to_le16(8 * tx_power),
d44c3fe6 1284 };
da03f029 1285 int len = sizeof(cmd);
d44c3fe6 1286
d44c3fe6 1287 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
4b87e5af 1288 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
d44c3fe6 1289
55bfa4b9
LC		 1290 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1291 len = sizeof(cmd.v3);
da03f029
JB		 1292
1293 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
d44c3fe6
AA		 1294}
1295
8ca151b5
JB		 1296static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1297 struct ieee80211_vif *vif)
1298{
1299 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1300 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1301 int ret;
1302
aa5e1832
EG		 1303 mvmvif->mvm = mvm;
1304
d40fc489
GG		 1305 /*
1306 * make sure D0i3 exit is completed, otherwise a target access
1307 * during tx queue configuration could be done when still in
1308 * D0i3 state.
1309 */
1310 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1311 if (ret)
1312 return ret;
1313
8ca151b5
JB		 1314 /*
1315 * Not much to do here. The stack will not allow interface
1316 * types or combinations that we didn't advertise, so we
1317 * don't really have to check the types.
1318 */
1319
1320 mutex_lock(&mvm->mutex);
1321
33cef925
JB		 1322 /* make sure that beacon statistics don't go backwards with FW reset */
1323 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1324 mvmvif->beacon_stats.accu_num_beacons +=
1325 mvmvif->beacon_stats.num_beacons;
1326
e89044d7 1327 /* Allocate resources for the MAC context, and add it to the fw */
8ca151b5
JB		 1328 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1329 if (ret)
1330 goto out_unlock;
1331
1c2abf72 1332 /* Counting number of interfaces is needed for legacy PM */
ea183d02
IP		 1333 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1334 mvm->vif_count++;
ea183d02 1335
8ca151b5
JB		 1336 /*
1337 * The AP binding flow can be done only after the beacon
1338 * template is configured (which happens only in the mac80211
1339 * start_ap() flow), and adding the broadcast station can happen
1340 * only after the binding.
1341 * In addition, since modifying the MAC before adding a bcast
1342 * station is not allowed by the FW, delay the adding of MAC context to
1343 * the point where we can also add the bcast station.
1344 * In short: there's not much we can do at this point, other than
1345 * allocating resources :)
1346 */
5023d966
JB		 1347 if (vif->type == NL80211_IFTYPE_AP ||
1348 vif->type == NL80211_IFTYPE_ADHOC) {
013290aa 1349 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1350 if (ret) {
1351 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1352 goto out_release;
1353 }
1354
26d6c16b
SS		 1355 if (iwl_mvm_is_dqa_supported(mvm)) {
1356 /*
1357 * Only queue for this station is the mcast queue,
1358 * which shouldn't be in TFD mask anyway
1359 */
1360 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
ced19f26
SS		 1361 0, vif->type,
1362 IWL_STA_MULTICAST);
26d6c16b
SS		 1363 if (ret)
1364 goto out_release;
1365 }
1366
77740cb4 1367 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1368 goto out_unlock;
1369 }
1370
93190fb0
AA		 1371 mvmvif->features |= hw->netdev_features;
1372
8ca151b5
JB		 1373 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1374 if (ret)
1375 goto out_release;
1376
999609f1 1377 ret = iwl_mvm_power_update_mac(mvm);
e5e7aa8e 1378 if (ret)
fd66fc1c 1379 goto out_remove_mac;
8ca151b5 1380
7df15b1e 1381 /* beacon filtering */
a1022927 1382 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
bd3351ba
EP		 1383 if (ret)
1384 goto out_remove_mac;
1385
7df15b1e 1386 if (!mvm->bf_allowed_vif &&
73e5f2c5 1387 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
7df15b1e 1388 mvm->bf_allowed_vif = mvmvif;
a20fd398
AO		 1389 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1390 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
7df15b1e
HG		 1391 }
1392
8ca151b5
JB		 1393 /*
1394 * P2P_DEVICE interface does not have a channel context assigned to it,
1395 * so a dedicated PHY context is allocated to it and the corresponding
1396 * MAC context is bound to it at this stage.
1397 */
1398 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 1399
fe0f2de3
IP		 1400 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1401 if (!mvmvif->phy_ctxt) {
1402 ret = -ENOSPC;
bd3351ba 1403 goto out_free_bf;
fe0f2de3 1404 }
8ca151b5 1405
53a9d61e 1406 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1407 ret = iwl_mvm_binding_add_vif(mvm, vif);
1408 if (ret)
53a9d61e 1409 goto out_unref_phy;
8ca151b5 1410
013290aa 1411 ret = iwl_mvm_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1412 if (ret)
1413 goto out_unbind;
1414
1415 /* Save a pointer to p2p device vif, so it can later be used to
1416 * update the p2p device MAC when a GO is started/stopped */
1417 mvm->p2p_device_vif = vif;
1418 }
1419
63494374 1420 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1421 goto out_unlock;
1422
1423 out_unbind:
1424 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 1425 out_unref_phy:
fe0f2de3 1426 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
bd3351ba
EP		 1427 out_free_bf:
1428 if (mvm->bf_allowed_vif == mvmvif) {
1429 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1430 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1431 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
bd3351ba 1432 }
8ca151b5
JB		 1433 out_remove_mac:
1434 mvmvif->phy_ctxt = NULL;
1435 iwl_mvm_mac_ctxt_remove(mvm, vif);
1436 out_release:
5ee2b215
AB		 1437 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1438 mvm->vif_count--;
1c2abf72 1439
8ca151b5
JB		 1440 iwl_mvm_mac_ctxt_release(mvm, vif);
1441 out_unlock:
1442 mutex_unlock(&mvm->mutex);
1443
d40fc489
GG		 1444 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1445
8ca151b5
JB		 1446 return ret;
1447}
1448
38a12b5b
JB		 1449static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1450 struct ieee80211_vif *vif)
8ca151b5 1451{
d92b732e 1452 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
8ca151b5
JB		 1453
1454 if (tfd_msk) {
fe92e32a
EG		 1455 /*
1456 * mac80211 first removes all the stations of the vif and
1457 * then removes the vif. When it removes a station it also
1458 * flushes the AMPDU session. So by now, all the AMPDU sessions
1459 * of all the stations of this vif are closed, and the queues
1460 * of these AMPDU sessions are properly closed.
1461 * We still need to take care of the shared queues of the vif.
1462 * Flush them here.
1463 */
8ca151b5 1464 mutex_lock(&mvm->mutex);
5888a40c 1465 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
8ca151b5 1466 mutex_unlock(&mvm->mutex);
fe92e32a
EG		 1467
1468 /*
1469 * There are transports that buffer a few frames in the host.
1470 * For these, the flush above isn't enough since while we were
1471 * flushing, the transport might have sent more frames to the
1472 * device. To solve this, wait here until the transport is
1473 * empty. Technically, this could have replaced the flush
1474 * above, but flush is much faster than draining. So flush
1475 * first, and drain to make sure we have no frames in the
1476 * transport anymore.
1477 * If a station still had frames on the shared queues, it is
1478 * already marked as draining, so to complete the draining, we
1479 * just need to wait until the transport is empty.
1480 */
a1a57877 1481 iwl_trans_wait_tx_queues_empty(mvm->trans, tfd_msk);
8ca151b5
JB		 1482 }
1483
1484 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1485 /*
1486 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1487 * We assume here that all the packets sent to the OFFCHANNEL
1488 * queue are sent in ROC session.
1489 */
1490 flush_work(&mvm->roc_done_wk);
1491 } else {
1492 /*
1493 * By now, all the AC queues are empty. The AGG queues are
1494 * empty too. We already got all the Tx responses for all the
1495 * packets in the queues. The drain work can have been
0742a75a 1496 * triggered. Flush it.
8ca151b5
JB		 1497 */
1498 flush_work(&mvm->sta_drained_wk);
1499 }
38a12b5b
JB		 1500}
1501
1502static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1503 struct ieee80211_vif *vif)
1504{
1505 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1506 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1507
1508 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 1509
1510 mutex_lock(&mvm->mutex);
1511
7df15b1e
HG		 1512 if (mvm->bf_allowed_vif == mvmvif) {
1513 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1514 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1515 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
7df15b1e
HG		 1516 }
1517
63494374
JB		 1518 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1519
8ca151b5
JB		 1520 /*
1521 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 1522 * interface is be handled as part of the stop_ap flow.
8ca151b5 1523 */
5023d966
JB		 1524 if (vif->type == NL80211_IFTYPE_AP ||
1525 vif->type == NL80211_IFTYPE_ADHOC) {
507cadf2
DS		 1526#ifdef CONFIG_NL80211_TESTMODE
1527 if (vif == mvm->noa_vif) {
1528 mvm->noa_vif = NULL;
1529 mvm->noa_duration = 0;
1530 }
1531#endif
26d6c16b 1532 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
013290aa 1533 iwl_mvm_dealloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1534 goto out_release;
1535 }
1536
1537 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1538 mvm->p2p_device_vif = NULL;
013290aa 1539 iwl_mvm_rm_bcast_sta(mvm, vif);
8ca151b5 1540 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 1541 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1542 mvmvif->phy_ctxt = NULL;
1543 }
1544
5ee2b215 1545 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5 1546 mvm->vif_count--;
1c2abf72 1547
999609f1 1548 iwl_mvm_power_update_mac(mvm);
8ca151b5
JB		 1549 iwl_mvm_mac_ctxt_remove(mvm, vif);
1550
1551out_release:
1552 iwl_mvm_mac_ctxt_release(mvm, vif);
1553 mutex_unlock(&mvm->mutex);
1554}
1555
1556static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
88f2fd73 1557{
8ca151b5
JB		 1558 return 0;
1559}
1560
e59647ea
EP		 1561struct iwl_mvm_mc_iter_data {
1562 struct iwl_mvm *mvm;
1563 int port_id;
1564};
1565
1566static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1567 struct ieee80211_vif *vif)
1568{
1569 struct iwl_mvm_mc_iter_data *data = _data;
1570 struct iwl_mvm *mvm = data->mvm;
1571 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1572 int ret, len;
1573
1574 /* if we don't have free ports, mcast frames will be dropped */
1575 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1576 return;
1577
1578 if (vif->type != NL80211_IFTYPE_STATION ||
1579 !vif->bss_conf.assoc)
1580 return;
1581
1582 cmd->port_id = data->port_id++;
1583 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1584 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1585
1c4abec0 1586 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
e59647ea
EP		 1587 if (ret)
1588 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1589}
1590
1591static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1592{
1593 struct iwl_mvm_mc_iter_data iter_data = {
1594 .mvm = mvm,
88f2fd73
MG		 1595 };
1596
e59647ea
EP		 1597 lockdep_assert_held(&mvm->mutex);
1598
1599 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1600 return;
1601
1c4abec0 1602 ieee80211_iterate_active_interfaces_atomic(
e59647ea
EP		 1603 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1604 iwl_mvm_mc_iface_iterator, &iter_data);
88f2fd73
MG		 1605}
1606
e59647ea
EP		 1607static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1608 struct netdev_hw_addr_list *mc_list)
8ca151b5 1609{
e59647ea
EP		 1610 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1611 struct iwl_mcast_filter_cmd *cmd;
1612 struct netdev_hw_addr *addr;
f3bd58f4
MS		 1613 int addr_count;
1614 bool pass_all;
e59647ea
EP		 1615 int len;
1616
f3bd58f4
MS		 1617 addr_count = netdev_hw_addr_list_count(mc_list);
1618 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1619 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1620 if (pass_all)
e59647ea 1621 addr_count = 0;
e59647ea
EP		 1622
1623 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1624 cmd = kzalloc(len, GFP_ATOMIC);
1625 if (!cmd)
1626 return 0;
1627
1628 if (pass_all) {
1629 cmd->pass_all = 1;
1630 return (u64)(unsigned long)cmd;
1631 }
1632
1633 netdev_hw_addr_list_for_each(addr, mc_list) {
1634 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1635 cmd->count, addr->addr);
1636 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1637 addr->addr, ETH_ALEN);
1638 cmd->count++;
1639 }
1640
1641 return (u64)(unsigned long)cmd;
8ca151b5
JB		 1642}
1643
1644static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1645 unsigned int changed_flags,
1646 unsigned int *total_flags,
1647 u64 multicast)
1648{
e59647ea
EP		 1649 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1650 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
8ca151b5 1651
e59647ea 1652 mutex_lock(&mvm->mutex);
51b6b9e0 1653
e59647ea
EP		 1654 /* replace previous configuration */
1655 kfree(mvm->mcast_filter_cmd);
1656 mvm->mcast_filter_cmd = cmd;
51b6b9e0 1657
e59647ea
EP		 1658 if (!cmd)
1659 goto out;
51b6b9e0 1660
e59647ea
EP		 1661 iwl_mvm_recalc_multicast(mvm);
1662out:
1663 mutex_unlock(&mvm->mutex);
1664 *total_flags = 0;
51b6b9e0
EG		 1665}
1666
effd1929
AO		 1667static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1668 struct ieee80211_vif *vif,
1669 unsigned int filter_flags,
1670 unsigned int changed_flags)
1671{
1672 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1673
1674 /* We support only filter for probe requests */
1675 if (!(changed_flags & FIF_PROBE_REQ))
1676 return;
1677
1678 /* Supported only for p2p client interfaces */
1679 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1680 !vif->p2p)
1681 return;
1682
1683 mutex_lock(&mvm->mutex);
1684 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1685 mutex_unlock(&mvm->mutex);
1686}
1687
c87163b9
EP		 1688#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1689struct iwl_bcast_iter_data {
1690 struct iwl_mvm *mvm;
1691 struct iwl_bcast_filter_cmd *cmd;
1692 u8 current_filter;
1693};
1694
1695static void
1696iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1697 const struct iwl_fw_bcast_filter *in_filter,
1698 struct iwl_fw_bcast_filter *out_filter)
1699{
1700 struct iwl_fw_bcast_filter_attr *attr;
1701 int i;
1702
1703 memcpy(out_filter, in_filter, sizeof(*out_filter));
1704
1705 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1706 attr = &out_filter->attrs[i];
1707
1708 if (!attr->mask)
1709 break;
1710
2ee8f021
EP		 1711 switch (attr->reserved1) {
1712 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1713 if (vif->bss_conf.arp_addr_cnt != 1) {
1714 attr->mask = 0;
1715 continue;
1716 }
1717
1718 attr->val = vif->bss_conf.arp_addr_list[0];
1719 break;
1720 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1721 attr->val = *(__be32 *)&vif->addr[2];
1722 break;
1723 default:
1724 break;
1725 }
1726 attr->reserved1 = 0;
c87163b9
EP		 1727 out_filter->num_attrs++;
1728 }
1729}
1730
1731static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1732 struct ieee80211_vif *vif)
1733{
1734 struct iwl_bcast_iter_data *data = _data;
1735 struct iwl_mvm *mvm = data->mvm;
1736 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1737 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1738 struct iwl_fw_bcast_mac *bcast_mac;
1739 int i;
1740
1741 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1742 return;
1743
1744 bcast_mac = &cmd->macs[mvmvif->id];
1745
e48393e8
IP		 1746 /*
1747 * enable filtering only for associated stations, but not for P2P
1748 * Clients
1749 */
1750 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1751 !vif->bss_conf.assoc)
c87163b9
EP		 1752 return;
1753
1754 bcast_mac->default_discard = 1;
1755
1756 /* copy all configured filters */
1757 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1758 /*
1759 * Make sure we don't exceed our filters limit.
1760 * if there is still a valid filter to be configured,
1761 * be on the safe side and just allow bcast for this mac.
1762 */
1763 if (WARN_ON_ONCE(data->current_filter >=
1764 ARRAY_SIZE(cmd->filters))) {
1765 bcast_mac->default_discard = 0;
1766 bcast_mac->attached_filters = 0;
1767 break;
1768 }
1769
1770 iwl_mvm_set_bcast_filter(vif,
1771 &mvm->bcast_filters[i],
1772 &cmd->filters[data->current_filter]);
1773
1774 /* skip current filter if it contains no attributes */
1775 if (!cmd->filters[data->current_filter].num_attrs)
1776 continue;
1777
1778 /* attach the filter to current mac */
1779 bcast_mac->attached_filters |=
1780 cpu_to_le16(BIT(data->current_filter));
1781
1782 data->current_filter++;
1783 }
1784}
1785
de06a59e
EP		 1786bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1787 struct iwl_bcast_filter_cmd *cmd)
c87163b9 1788{
c87163b9
EP		 1789 struct iwl_bcast_iter_data iter_data = {
1790 .mvm = mvm,
de06a59e 1791 .cmd = cmd,
c87163b9
EP		 1792 };
1793
3b8983b1
MS		 1794 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1795 return false;
1796
de06a59e
EP		 1797 memset(cmd, 0, sizeof(*cmd));
1798 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1799 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1800
1801#ifdef CONFIG_IWLWIFI_DEBUGFS
1802 /* use debugfs filters/macs if override is configured */
1803 if (mvm->dbgfs_bcast_filtering.override) {
1804 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1805 sizeof(cmd->filters));
1806 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1807 sizeof(cmd->macs));
1808 return true;
1809 }
1810#endif
c87163b9
EP		 1811
1812 /* if no filters are configured, do nothing */
1813 if (!mvm->bcast_filters)
de06a59e 1814 return false;
c87163b9
EP		 1815
1816 /* configure and attach these filters for each associated sta vif */
1817 ieee80211_iterate_active_interfaces(
1818 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1819 iwl_mvm_bcast_filter_iterator, &iter_data);
1820
de06a59e
EP		 1821 return true;
1822}
34672bb3
EP		 1823
1824static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
de06a59e
EP		 1825{
1826 struct iwl_bcast_filter_cmd cmd;
1827
1828 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1829 return 0;
1830
1831 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1832 return 0;
1833
a1022927 1834 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
c87163b9
EP		 1835 sizeof(cmd), &cmd);
1836}
1837#else
34672bb3 1838static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
c87163b9
EP		 1839{
1840 return 0;
1841}
1842#endif
1843
a07a8f37
SS		 1844static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1845 struct ieee80211_vif *vif)
1846{
1847 struct iwl_mu_group_mgmt_cmd cmd = {};
1848
1849 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1850 WLAN_MEMBERSHIP_LEN);
1851 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1852 WLAN_USER_POSITION_LEN);
1853
1854 return iwl_mvm_send_cmd_pdu(mvm,
1855 WIDE_ID(DATA_PATH_GROUP,
1856 UPDATE_MU_GROUPS_CMD),
1857 0, sizeof(cmd), &cmd);
1858}
1859
f92659a1
SS		 1860static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1861 struct ieee80211_vif *vif)
1862{
1863 if (vif->mu_mimo_owner) {
1864 struct iwl_mu_group_mgmt_notif *notif = _data;
1865
1866 /*
1867 * MU-MIMO Group Id action frame is little endian. We treat
1868 * the data received from firmware as if it came from the
1869 * action frame, so no conversion is needed.
1870 */
1871 ieee80211_update_mu_groups(vif,
1872 (u8 *)&notif->membership_status,
1873 (u8 *)&notif->user_position);
1874 }
1875}
1876
1877void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1878 struct iwl_rx_cmd_buffer *rxb)
1879{
1880 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1881 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1882
1883 ieee80211_iterate_active_interfaces_atomic(
1884 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1885 iwl_mvm_mu_mimo_iface_iterator, notif);
1886}
1887
8ca151b5
JB		 1888static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1889 struct ieee80211_vif *vif,
1890 struct ieee80211_bss_conf *bss_conf,
1891 u32 changes)
1892{
1893 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1894 int ret;
1895
6e97b0d2
IP		 1896 /*
1897 * Re-calculate the tsf id, as the master-slave relations depend on the
1898 * beacon interval, which was not known when the station interface was
1899 * added.
1900 */
1901 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1902 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1903
03098268
AE		 1904 if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1905 mvmvif->lqm_active)
1906 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1907 0, 0);
1908
3dfd3a97
JB		 1909 /*
1910 * If we're not associated yet, take the (new) BSSID before associating
1911 * so the firmware knows. If we're already associated, then use the old
1912 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1913 * branch for disassociation below.
1914 */
1915 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1916 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1917
1918 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
8ca151b5
JB		 1919 if (ret)
1920 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1921
3dfd3a97
JB		 1922 /* after sending it once, adopt mac80211 data */
1923 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1924 mvmvif->associated = bss_conf->assoc;
1925
8ca151b5
JB		 1926 if (changes & BSS_CHANGED_ASSOC) {
1927 if (bss_conf->assoc) {
33cef925
JB		 1928 /* clear statistics to get clean beacon counter */
1929 iwl_mvm_request_statistics(mvm, true);
1930 memset(&mvmvif->beacon_stats, 0,
1931 sizeof(mvmvif->beacon_stats));
1932
8ca151b5 1933 /* add quota for this interface */
7754ae79 1934 ret = iwl_mvm_update_quotas(mvm, true, NULL);
8ca151b5
JB		 1935 if (ret) {
1936 IWL_ERR(mvm, "failed to update quotas\n");
1937 return;
1938 }
016d27e1
JB		 1939
1940 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1941 &mvm->status)) {
1942 /*
1943 * If we're restarting then the firmware will
1944 * obviously have lost synchronisation with
1945 * the AP. It will attempt to synchronise by
1946 * itself, but we can make it more reliable by
1947 * scheduling a session protection time event.
1948 *
1949 * The firmware needs to receive a beacon to
1950 * catch up with synchronisation, use 110% of
1951 * the beacon interval.
1952 *
1953 * Set a large maximum delay to allow for more
1954 * than a single interface.
1955 */
1956 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1957 iwl_mvm_protect_session(mvm, vif, dur, dur,
d20d37bc 1958 5 * dur, false);
016d27e1 1959 }
1f3b0ff8
LE		 1960
1961 iwl_mvm_sf_update(mvm, vif, false);
175a70b7 1962 iwl_mvm_power_vif_assoc(mvm, vif);
697162a1 1963 if (vif->p2p) {
29a90a49 1964 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
697162a1
EG		 1965 iwl_mvm_update_smps(mvm, vif,
1966 IWL_MVM_SMPS_REQ_PROT,
1967 IEEE80211_SMPS_DYNAMIC);
1968 }
0ae98812 1969 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
1f3b0ff8
LE		 1970 /*
1971 * If update fails - SF might be running in associated
1972 * mode while disassociated - which is forbidden.
1973 */
1974 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1975 "Failed to update SF upon disassociation\n");
1976
8ca151b5
JB		 1977 /* remove AP station now that the MAC is unassoc */
1978 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1979 if (ret)
1980 IWL_ERR(mvm, "failed to remove AP station\n");
37577fe2
EP		 1981
1982 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
0ae98812
SS		 1983 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1984 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
8ca151b5 1985 /* remove quota for this interface */
7754ae79 1986 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5
JB		 1987 if (ret)
1988 IWL_ERR(mvm, "failed to update quotas\n");
29a90a49
EP		 1989
1990 if (vif->p2p)
1991 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
3dfd3a97
JB		 1992
1993 /* this will take the cleared BSSID from bss_conf */
1994 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1995 if (ret)
1996 IWL_ERR(mvm,
1997 "failed to update MAC %pM (clear after unassoc)\n",
1998 vif->addr);
8ca151b5 1999 }
a20fd398 2000
a07a8f37
SS		 2001 /*
2002 * The firmware tracks the MU-MIMO group on its own.
f92659a1 2003 * However, on HW restart we should restore this data.
a07a8f37
SS		 2004 */
2005 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
f92659a1 2006 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
a07a8f37
SS		 2007 ret = iwl_mvm_update_mu_groups(mvm, vif);
2008 if (ret)
2009 IWL_ERR(mvm,
2010 "failed to update VHT MU_MIMO groups\n");
2011 }
2012
e59647ea 2013 iwl_mvm_recalc_multicast(mvm);
34672bb3 2014 iwl_mvm_configure_bcast_filter(mvm);
e59647ea 2015
a20fd398
AO		 2016 /* reset rssi values */
2017 mvmvif->bf_data.ave_beacon_signal = 0;
2018
8e484f0b 2019 iwl_mvm_bt_coex_vif_change(mvm);
f94045ed
EG		 2020 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2021 IEEE80211_SMPS_AUTOMATIC);
355346ba
AS		 2022 if (fw_has_capa(&mvm->fw->ucode_capa,
2023 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2024 iwl_mvm_config_scan(mvm);
b45242c9
AS		 2025 }
2026
2027 if (changes & BSS_CHANGED_BEACON_INFO) {
210a544e 2028 /*
b45242c9 2029 * We received a beacon from the associated AP so
210a544e
JB		 2030 * remove the session protection.
2031 */
2032 iwl_mvm_remove_time_event(mvm, mvmvif,
2033 &mvmvif->time_event_data);
cc87d322 2034
cc87d322
EH		 2035 iwl_mvm_sf_update(mvm, vif, false);
2036 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2037 }
2038
283115fb
AA		 2039 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2040 /*
2041 * Send power command on every beacon change,
2042 * because we may have not enabled beacon abort yet.
2043 */
2044 BSS_CHANGED_BEACON_INFO)) {
1bc10d3b
JB		 2045 ret = iwl_mvm_power_update_mac(mvm);
2046 if (ret)
2047 IWL_ERR(mvm, "failed to update power mode\n");
2048 }
2049
88f2fd73
MG		 2050 if (changes & BSS_CHANGED_TXPOWER) {
2051 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2052 bss_conf->txpower);
2053 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2054 }
a20fd398
AO		 2055
2056 if (changes & BSS_CHANGED_CQM) {
3c6acb61 2057 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
a20fd398
AO		 2058 /* reset cqm events tracking */
2059 mvmvif->bf_data.last_cqm_event = 0;
fa7b2e7f
AA		 2060 if (mvmvif->bf_data.bf_enabled) {
2061 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2062 if (ret)
2063 IWL_ERR(mvm,
2064 "failed to update CQM thresholds\n");
2065 }
a20fd398 2066 }
2ee8f021
EP		 2067
2068 if (changes & BSS_CHANGED_ARP_FILTER) {
3c6acb61 2069 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
34672bb3 2070 iwl_mvm_configure_bcast_filter(mvm);
2ee8f021 2071 }
8ca151b5
JB		 2072}
2073
5023d966
JB		 2074static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2075 struct ieee80211_vif *vif)
8ca151b5
JB		 2076{
2077 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2078 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2079 int ret;
2080
576eeee9
EP		 2081 /*
2082 * iwl_mvm_mac_ctxt_add() might read directly from the device
2083 * (the system time), so make sure it is available.
2084 */
2085 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2086 if (ret)
2087 return ret;
2088
8ca151b5
JB		 2089 mutex_lock(&mvm->mutex);
2090
2091 /* Send the beacon template */
2092 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2093 if (ret)
2094 goto out_unlock;
2095
6e97b0d2
IP		 2096 /*
2097 * Re-calculate the tsf id, as the master-slave relations depend on the
2098 * beacon interval, which was not known when the AP interface was added.
2099 */
2100 if (vif->type == NL80211_IFTYPE_AP)
2101 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2102
94939080
GG		 2103 mvmvif->ap_assoc_sta_count = 0;
2104
8ca151b5
JB		 2105 /* Add the mac context */
2106 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2107 if (ret)
2108 goto out_unlock;
2109
2110 /* Perform the binding */
2111 ret = iwl_mvm_binding_add_vif(mvm, vif);
2112 if (ret)
2113 goto out_remove;
2114
ced19f26 2115 ret = iwl_mvm_add_mcast_sta(mvm, vif);
8ca151b5
JB		 2116 if (ret)
2117 goto out_unbind;
2118
ced19f26
SS		 2119 /* Send the bcast station. At this stage the TBTT and DTIM time events
2120 * are added and applied to the scheduler */
2121 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
26d6c16b 2122 if (ret)
ced19f26 2123 goto out_rm_mcast;
26d6c16b 2124
5691e218
IP		 2125 /* must be set before quota calculations */
2126 mvmvif->ap_ibss_active = true;
2127
a11e144e 2128 /* power updated needs to be done before quotas */
999609f1 2129 iwl_mvm_power_update_mac(mvm);
a11e144e 2130
7754ae79 2131 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5 2132 if (ret)
a11e144e 2133 goto out_quota_failed;
8ca151b5 2134
5023d966 2135 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 2136 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 2137 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 2138
29a90a49
EP		 2139 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2140
8e484f0b 2141 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 2142
f697267f
AN		 2143 /* we don't support TDLS during DCM */
2144 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2145 iwl_mvm_teardown_tdls_peers(mvm);
2146
939e4904 2147 goto out_unlock;
8ca151b5 2148
a11e144e 2149out_quota_failed:
999609f1 2150 iwl_mvm_power_update_mac(mvm);
5691e218 2151 mvmvif->ap_ibss_active = false;
013290aa 2152 iwl_mvm_send_rm_bcast_sta(mvm, vif);
ced19f26
SS		 2153out_rm_mcast:
2154 iwl_mvm_rm_mcast_sta(mvm, vif);
8ca151b5
JB		 2155out_unbind:
2156 iwl_mvm_binding_remove_vif(mvm, vif);
2157out_remove:
2158 iwl_mvm_mac_ctxt_remove(mvm, vif);
2159out_unlock:
2160 mutex_unlock(&mvm->mutex);
576eeee9 2161 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
8ca151b5
JB		 2162 return ret;
2163}
2164
5023d966
JB		 2165static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2166 struct ieee80211_vif *vif)
8ca151b5
JB		 2167{
2168 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2169 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2170
38a12b5b
JB		 2171 iwl_mvm_prepare_mac_removal(mvm, vif);
2172
8ca151b5
JB		 2173 mutex_lock(&mvm->mutex);
2174
664322fa 2175 /* Handle AP stop while in CSA */
7f0a7c67
AO		 2176 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2177 iwl_mvm_remove_time_event(mvm, mvmvif,
2178 &mvmvif->time_event_data);
664322fa 2179 RCU_INIT_POINTER(mvm->csa_vif, NULL);
e9cb0327 2180 mvmvif->csa_countdown = false;
7f0a7c67 2181 }
664322fa 2182
003e5236
AO		 2183 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2184 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2185 mvm->csa_tx_block_bcn_timeout = 0;
2186 }
2187
5023d966 2188 mvmvif->ap_ibss_active = false;
1c87bbad 2189 mvm->ap_last_beacon_gp2 = 0;
8ca151b5 2190
8e484f0b 2191 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 2192
29a90a49
EP		 2193 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2194
5023d966 2195 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 2196 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 2197 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 2198
7754ae79 2199 iwl_mvm_update_quotas(mvm, false, NULL);
ced19f26
SS		 2200
2201 /*
2202 * This is not very nice, but the simplest:
2203 * For older FWs removing the mcast sta before the bcast station may
2204 * cause assert 0x2b00.
2205 * This is fixed in later FW (which will stop beaconing when removing
2206 * bcast station).
2207 * So make the order of removal depend on the TLV
2208 */
2209 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2210 iwl_mvm_rm_mcast_sta(mvm, vif);
013290aa 2211 iwl_mvm_send_rm_bcast_sta(mvm, vif);
ced19f26
SS		 2212 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2213 iwl_mvm_rm_mcast_sta(mvm, vif);
8ca151b5 2214 iwl_mvm_binding_remove_vif(mvm, vif);
a11e144e 2215
999609f1 2216 iwl_mvm_power_update_mac(mvm);
a11e144e 2217
8ca151b5
JB		 2218 iwl_mvm_mac_ctxt_remove(mvm, vif);
2219
2220 mutex_unlock(&mvm->mutex);
2221}
2222
5023d966
JB		 2223static void
2224iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2225 struct ieee80211_vif *vif,
2226 struct ieee80211_bss_conf *bss_conf,
2227 u32 changes)
8ca151b5 2228{
be2056fc 2229 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8a5e3660 2230
be2056fc
IP		 2231 /* Changes will be applied when the AP/IBSS is started */
2232 if (!mvmvif->ap_ibss_active)
2233 return;
2234
863230da 2235 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
f7d8b702 2236 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
3dfd3a97 2237 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
863230da 2238 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
8a5e3660 2239
8ca151b5 2240 /* Need to send a new beacon template to the FW */
863230da
JB		 2241 if (changes & BSS_CHANGED_BEACON &&
2242 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2243 IWL_WARN(mvm, "Failed updating beacon data\n");
79b7a69d
HD		 2244
2245 if (changes & BSS_CHANGED_TXPOWER) {
2246 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2247 bss_conf->txpower);
2248 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2249 }
8ca151b5
JB		 2250}
2251
2252static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2253 struct ieee80211_vif *vif,
2254 struct ieee80211_bss_conf *bss_conf,
2255 u32 changes)
2256{
2257 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2258
576eeee9
EP		 2259 /*
2260 * iwl_mvm_bss_info_changed_station() might call
2261 * iwl_mvm_protect_session(), which reads directly from
2262 * the device (the system time), so make sure it is available.
2263 */
2264 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2265 return;
2266
8ca151b5
JB		 2267 mutex_lock(&mvm->mutex);
2268
723f02ed 2269 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
c7d42480 2270 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
723f02ed 2271
8ca151b5
JB		 2272 switch (vif->type) {
2273 case NL80211_IFTYPE_STATION:
2274 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2275 break;
2276 case NL80211_IFTYPE_AP:
5023d966
JB		 2277 case NL80211_IFTYPE_ADHOC:
2278 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
8ca151b5 2279 break;
91b08c2d
AE		 2280 case NL80211_IFTYPE_MONITOR:
2281 if (changes & BSS_CHANGED_MU_GROUPS)
2282 iwl_mvm_update_mu_groups(mvm, vif);
2283 break;
8ca151b5
JB		 2284 default:
2285 /* shouldn't happen */
2286 WARN_ON_ONCE(1);
2287 }
2288
2289 mutex_unlock(&mvm->mutex);
576eeee9 2290 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
8ca151b5
JB		 2291}
2292
2293static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2294 struct ieee80211_vif *vif,
c56ef672 2295 struct ieee80211_scan_request *hw_req)
8ca151b5
JB		 2296{
2297 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2298 int ret;
2299
6749dd80
LC		 2300 if (hw_req->req.n_channels == 0 ||
2301 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
8ca151b5
JB		 2302 return -EINVAL;
2303
2304 mutex_lock(&mvm->mutex);
6749dd80 2305 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
8ca151b5 2306 mutex_unlock(&mvm->mutex);
6749dd80 2307
8ca151b5
JB		 2308 return ret;
2309}
2310
2311static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2312 struct ieee80211_vif *vif)
2313{
2314 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2315
2316 mutex_lock(&mvm->mutex);
2317
e7d3abab
LC		 2318 /* Due to a race condition, it's possible that mac80211 asks
2319 * us to stop a hw_scan when it's already stopped. This can
2320 * happen, for instance, if we stopped the scan ourselves,
2321 * called ieee80211_scan_completed() and the userspace called
2322 * cancel scan scan before ieee80211_scan_work() could run.
2323 * To handle that, simply return if the scan is not running.
2324 */
262888fc 2325 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
c7d42480 2326 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
8ca151b5
JB		 2327
2328 mutex_unlock(&mvm->mutex);
2329}
2330
2331static void
2332iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
3e56eadf 2333 struct ieee80211_sta *sta, u16 tids,
8ca151b5
JB		 2334 int num_frames,
2335 enum ieee80211_frame_release_type reason,
2336 bool more_data)
2337{
2338 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5 2339
3e56eadf 2340 /* Called when we need to transmit (a) frame(s) from mac80211 */
8ca151b5 2341
3e56eadf
JB		 2342 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2343 tids, more_data, false);
2344}
2345
2346static void
2347iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2348 struct ieee80211_sta *sta, u16 tids,
2349 int num_frames,
2350 enum ieee80211_frame_release_type reason,
2351 bool more_data)
2352{
2353 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2354
9a3fcf91 2355 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
3e56eadf
JB		 2356
2357 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2358 tids, more_data, true);
8ca151b5
JB		 2359}
2360
65e25482
JB		 2361static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2362 enum sta_notify_cmd cmd,
2363 struct ieee80211_sta *sta)
8ca151b5
JB		 2364{
2365 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5b577a90 2366 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
c22b0ff5 2367 unsigned long txqs = 0, tids = 0;
3e56eadf 2368 int tid;
8ca151b5 2369
c22b0ff5
EG		 2370 spin_lock_bh(&mvmsta->lock);
2371 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2372 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2373
9a3fcf91
SS		 2374 if (!iwl_mvm_is_dqa_supported(mvm) &&
2375 tid_data->state != IWL_AGG_ON &&
c22b0ff5
EG		 2376 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2377 continue;
2378
6862fcee 2379 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
1c17627b
SS		 2380 continue;
2381
c22b0ff5
EG		 2382 __set_bit(tid_data->txq_id, &txqs);
2383
2384 if (iwl_mvm_tid_queued(tid_data) == 0)
2385 continue;
2386
2387 __set_bit(tid, &tids);
2388 }
2389
8ca151b5
JB		 2390 switch (cmd) {
2391 case STA_NOTIFY_SLEEP:
e3d4bc8c 2392 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5 2393 ieee80211_sta_block_awake(hw, sta, true);
3e56eadf 2394
c22b0ff5 2395 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
3e56eadf 2396 ieee80211_sta_set_buffered(sta, tid, true);
c22b0ff5
EG		 2397
2398 if (txqs)
2399 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
8ca151b5
JB		 2400 /*
2401 * The fw updates the STA to be asleep. Tx packets on the Tx
2402 * queues to this station will not be transmitted. The fw will
2403 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2404 */
2405 break;
2406 case STA_NOTIFY_AWAKE:
0ae98812 2407 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
8ca151b5 2408 break;
c22b0ff5
EG		 2409
2410 if (txqs)
2411 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
9cc40712 2412 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 2413 break;
2414 default:
2415 break;
2416 }
c22b0ff5 2417 spin_unlock_bh(&mvmsta->lock);
8ca151b5
JB		 2418}
2419
65e25482
JB		 2420static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2421 struct ieee80211_vif *vif,
2422 enum sta_notify_cmd cmd,
2423 struct ieee80211_sta *sta)
2424{
2425 __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2426}
2427
2428void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2429{
2430 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2431 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2432 struct ieee80211_sta *sta;
2433 struct iwl_mvm_sta *mvmsta;
2434 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2435
2436 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2437 return;
2438
2439 rcu_read_lock();
a9560029 2440 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
65e25482
JB		 2441 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2442 rcu_read_unlock();
2443 return;
2444 }
2445
2446 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2447
2448 if (!mvmsta->vif ||
2449 mvmsta->vif->type != NL80211_IFTYPE_AP) {
2450 rcu_read_unlock();
2451 return;
2452 }
2453
2454 if (mvmsta->sleeping != sleeping) {
2455 mvmsta->sleeping = sleeping;
2456 __iwl_mvm_mac_sta_notify(mvm->hw,
2457 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2458 sta);
2459 ieee80211_sta_ps_transition(sta, sleeping);
2460 }
2461
2462 if (sleeping) {
2463 switch (notif->type) {
2464 case IWL_MVM_PM_EVENT_AWAKE:
2465 case IWL_MVM_PM_EVENT_ASLEEP:
2466 break;
2467 case IWL_MVM_PM_EVENT_UAPSD:
2468 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2469 break;
2470 case IWL_MVM_PM_EVENT_PS_POLL:
2471 ieee80211_sta_pspoll(sta);
2472 break;
2473 default:
2474 break;
2475 }
2476 }
2477
2478 rcu_read_unlock();
2479}
2480
1ddbbb0c
JB		 2481static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2482 struct ieee80211_vif *vif,
2483 struct ieee80211_sta *sta)
2484{
2485 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
9d8ce6af 2486 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1ddbbb0c
JB		 2487
2488 /*
2489 * This is called before mac80211 does RCU synchronisation,
2490 * so here we already invalidate our internal RCU-protected
2491 * station pointer. The rest of the code will thus no longer
2492 * be able to find the station this way, and we don't rely
2493 * on further RCU synchronisation after the sta_state()
2494 * callback deleted the station.
2495 */
2496 mutex_lock(&mvm->mutex);
2497 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2498 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2499 ERR_PTR(-ENOENT));
94939080 2500
1ddbbb0c
JB		 2501 mutex_unlock(&mvm->mutex);
2502}
2503
bd1ba664
JB		 2504static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2505 const u8 *bssid)
2506{
2507 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2508 return;
2509
c5241b0c 2510 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
cee5a882
AA		 2511 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2512 return;
2513 }
2514
11dee0b4
EG		 2515 if (!vif->p2p &&
2516 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
bd1ba664
JB		 2517 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2518 return;
2519 }
2520
2521 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2522}
2523
1e8f1329
GBA		 2524static void
2525iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2526 struct ieee80211_vif *vif, u8 *peer_addr,
2527 enum nl80211_tdls_operation action)
2528{
2529 struct iwl_fw_dbg_trigger_tlv *trig;
2530 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2531
2532 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2533 return;
2534
2535 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2536 tdls_trig = (void *)trig->data;
2537 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2538 return;
2539
2540 if (!(tdls_trig->action_bitmap & BIT(action)))
2541 return;
2542
2543 if (tdls_trig->peer_mode &&
2544 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2545 return;
2546
2547 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2548 "TDLS event occurred, peer %pM, action %d",
2549 peer_addr, action);
2550}
2551
24afba76
LK		 2552static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2553 struct iwl_mvm_sta *mvm_sta)
2554{
2555 struct iwl_mvm_tid_data *tid_data;
2556 struct sk_buff *skb;
2557 int i;
2558
2559 spin_lock_bh(&mvm_sta->lock);
2560 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2561 tid_data = &mvm_sta->tid_data[i];
2562 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames)))
2563 ieee80211_free_txskb(mvm->hw, skb);
2564 }
2565 spin_unlock_bh(&mvm_sta->lock);
2566}
2567
8ca151b5
JB		 2568static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2569 struct ieee80211_vif *vif,
2570 struct ieee80211_sta *sta,
2571 enum ieee80211_sta_state old_state,
2572 enum ieee80211_sta_state new_state)
2573{
2574 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2575 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
6ea29ce5 2576 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 2577 int ret;
2578
2579 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2580 sta->addr, old_state, new_state);
2581
2582 /* this would be a mac80211 bug ... but don't crash */
2583 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2584 return -EINVAL;
2585
2586 /* if a STA is being removed, reuse its ID */
2587 flush_work(&mvm->sta_drained_wk);
2588
24afba76
LK		 2589 /*
2590 * If we are in a STA removal flow and in DQA mode:
2591 *
2592 * This is after the sync_rcu part, so the queues have already been
2593 * flushed. No more TXs on their way in mac80211's path, and no more in
2594 * the queues.
2595 * Also, we won't be getting any new TX frames for this station.
2596 * What we might have are deferred TX frames that need to be taken care
2597 * of.
2598 *
2599 * Drop any still-queued deferred-frame before removing the STA, and
2600 * make sure the worker is no longer handling frames for this STA.
2601 */
2602 if (old_state == IEEE80211_STA_NONE &&
2603 new_state == IEEE80211_STA_NOTEXIST &&
2604 iwl_mvm_is_dqa_supported(mvm)) {
24afba76
LK		 2605 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2606 flush_work(&mvm->add_stream_wk);
2607
2608 /*
2609 * No need to make sure deferred TX indication is off since the
2610 * worker will already remove it if it was on
2611 */
2612 }
2613
8ca151b5 2614 mutex_lock(&mvm->mutex);
6ea29ce5
JB		 2615 /* track whether or not the station is associated */
2616 mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC;
2617
8ca151b5
JB		 2618 if (old_state == IEEE80211_STA_NOTEXIST &&
2619 new_state == IEEE80211_STA_NONE) {
48bc1307
JB		 2620 /*
2621 * Firmware bug - it'll crash if the beacon interval is less
2622 * than 16. We can't avoid connecting at all, so refuse the
2623 * station state change, this will cause mac80211 to abandon
2624 * attempts to connect to this AP, and eventually wpa_s will
2625 * blacklist the AP...
2626 */
2627 if (vif->type == NL80211_IFTYPE_STATION &&
2628 vif->bss_conf.beacon_int < 16) {
2629 IWL_ERR(mvm,
2630 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2631 sta->addr, vif->bss_conf.beacon_int);
2632 ret = -EINVAL;
2633 goto out_unlock;
2634 }
cf7b491d
AN		 2635
2636 if (sta->tdls &&
2637 (vif->p2p ||
fa3d07e4
AN		 2638 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2639 IWL_MVM_TDLS_STA_COUNT ||
cf7b491d
AN		 2640 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2641 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2642 ret = -EBUSY;
2643 goto out_unlock;
2644 }
2645
8ca151b5 2646 ret = iwl_mvm_add_sta(mvm, vif, sta);
1e8f1329 2647 if (sta->tdls && ret == 0) {
fa3d07e4 2648 iwl_mvm_recalc_tdls_state(mvm, vif, true);
1e8f1329
GBA		 2649 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2650 NL80211_TDLS_SETUP);
2651 }
8ca151b5
JB		 2652 } else if (old_state == IEEE80211_STA_NONE &&
2653 new_state == IEEE80211_STA_AUTH) {
e820c2da
HD		 2654 /*
2655 * EBS may be disabled due to previous failures reported by FW.
2656 * Reset EBS status here assuming environment has been changed.
2657 */
2658 mvm->last_ebs_successful = true;
bd1ba664 2659 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
8ca151b5
JB		 2660 ret = 0;
2661 } else if (old_state == IEEE80211_STA_AUTH &&
2662 new_state == IEEE80211_STA_ASSOC) {
8be30c13
AB		 2663 if (vif->type == NL80211_IFTYPE_AP) {
2664 mvmvif->ap_assoc_sta_count++;
2665 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2666 }
735a0045
GM		 2667
2668 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2669 true);
7a453973 2670 ret = iwl_mvm_update_sta(mvm, vif, sta);
8ca151b5
JB		 2671 } else if (old_state == IEEE80211_STA_ASSOC &&
2672 new_state == IEEE80211_STA_AUTHORIZED) {
f59e0e3c
AN		 2673
2674 /* we don't support TDLS during DCM */
2675 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2676 iwl_mvm_teardown_tdls_peers(mvm);
2677
1e8f1329
GBA		 2678 if (sta->tdls)
2679 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2680 NL80211_TDLS_ENABLE_LINK);
2681
7df15b1e 2682 /* enable beacon filtering */
fa7b2e7f 2683 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2684 ret = 0;
2685 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2686 new_state == IEEE80211_STA_ASSOC) {
7df15b1e 2687 /* disable beacon filtering */
a1022927 2688 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2689 ret = 0;
2690 } else if (old_state == IEEE80211_STA_ASSOC &&
2691 new_state == IEEE80211_STA_AUTH) {
8be30c13
AB		 2692 if (vif->type == NL80211_IFTYPE_AP) {
2693 mvmvif->ap_assoc_sta_count--;
2694 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2695 }
8ca151b5
JB		 2696 ret = 0;
2697 } else if (old_state == IEEE80211_STA_AUTH &&
2698 new_state == IEEE80211_STA_NONE) {
2699 ret = 0;
2700 } else if (old_state == IEEE80211_STA_NONE &&
2701 new_state == IEEE80211_STA_NOTEXIST) {
2702 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1e8f1329 2703 if (sta->tdls) {
fa3d07e4 2704 iwl_mvm_recalc_tdls_state(mvm, vif, false);
1e8f1329
GBA		 2705 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2706 NL80211_TDLS_DISABLE_LINK);
2707 }
8ca151b5
JB		 2708 } else {
2709 ret = -EIO;
2710 }
48bc1307 2711 out_unlock:
8ca151b5
JB		 2712 mutex_unlock(&mvm->mutex);
2713
9c126cd6
LK		 2714 if (sta->tdls && ret == 0) {
2715 if (old_state == IEEE80211_STA_NOTEXIST &&
2716 new_state == IEEE80211_STA_NONE)
2717 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2718 else if (old_state == IEEE80211_STA_NONE &&
2719 new_state == IEEE80211_STA_NOTEXIST)
2720 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2721 }
2722
8ca151b5
JB		 2723 return ret;
2724}
2725
2726static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2727{
2728 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2729
2730 mvm->rts_threshold = value;
2731
2732 return 0;
2733}
2734
1f3b0ff8
LE		 2735static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2736 struct ieee80211_vif *vif,
2737 struct ieee80211_sta *sta, u32 changed)
2738{
2739 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2740
2741 if (vif->type == NL80211_IFTYPE_STATION &&
2742 changed & IEEE80211_RC_NSS_CHANGED)
2743 iwl_mvm_sf_update(mvm, vif, false);
2744}
2745
8ca151b5
JB		 2746static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2747 struct ieee80211_vif *vif, u16 ac,
2748 const struct ieee80211_tx_queue_params *params)
2749{
2750 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2751 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2752
2753 mvmvif->queue_params[ac] = *params;
2754
2755 /*
2756 * No need to update right away, we'll get BSS_CHANGED_QOS
2757 * The exception is P2P_DEVICE interface which needs immediate update.
2758 */
2759 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2760 int ret;
2761
2762 mutex_lock(&mvm->mutex);
3dfd3a97 2763 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
8ca151b5
JB		 2764 mutex_unlock(&mvm->mutex);
2765 return ret;
2766 }
2767 return 0;
2768}
2769
2770static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2771 struct ieee80211_vif *vif)
2772{
2773 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
7c70fee5
SS		 2774 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2775 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
8ca151b5
JB		 2776
2777 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2778 return;
2779
576eeee9
EP		 2780 /*
2781 * iwl_mvm_protect_session() reads directly from the device
2782 * (the system time), so make sure it is available.
2783 */
2784 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2785 return;
2786
8ca151b5
JB		 2787 mutex_lock(&mvm->mutex);
2788 /* Try really hard to protect the session and hear a beacon */
d20d37bc 2789 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
8ca151b5 2790 mutex_unlock(&mvm->mutex);
576eeee9
EP		 2791
2792 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
8ca151b5
JB		 2793}
2794
35a000b7
DS		 2795static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2796 struct ieee80211_vif *vif,
2797 struct cfg80211_sched_scan_request *req,
633e2713 2798 struct ieee80211_scan_ies *ies)
35a000b7
DS		 2799{
2800 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
35a000b7 2801
35a000b7 2802 int ret;
4660dfbb 2803
35a000b7
DS		 2804 mutex_lock(&mvm->mutex);
2805
1f940386 2806 if (!vif->bss_conf.idle) {
bd5e4744
DS		 2807 ret = -EBUSY;
2808 goto out;
2809 }
2810
19945dfb 2811 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
d2496221 2812
35a000b7
DS		 2813out:
2814 mutex_unlock(&mvm->mutex);
2815 return ret;
2816}
2817
37e3308c
JB		 2818static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2819 struct ieee80211_vif *vif)
35a000b7
DS		 2820{
2821 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
33ea27f6 2822 int ret;
35a000b7
DS		 2823
2824 mutex_lock(&mvm->mutex);
e7d3abab
LC		 2825
2826 /* Due to a race condition, it's possible that mac80211 asks
2827 * us to stop a sched_scan when it's already stopped. This
2828 * can happen, for instance, if we stopped the scan ourselves,
2829 * called ieee80211_sched_scan_stopped() and the userspace called
2830 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2831 * could run. To handle this, simply return if the scan is
2832 * not running.
2833 */
262888fc 2834 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
e7d3abab
LC		 2835 mutex_unlock(&mvm->mutex);
2836 return 0;
2837 }
2838
c7d42480 2839 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
35a000b7 2840 mutex_unlock(&mvm->mutex);
33ea27f6 2841 iwl_mvm_wait_for_async_handlers(mvm);
37e3308c 2842
33ea27f6 2843 return ret;
35a000b7
DS		 2844}
2845
8ca151b5
JB		 2846static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2847 enum set_key_cmd cmd,
2848 struct ieee80211_vif *vif,
2849 struct ieee80211_sta *sta,
2850 struct ieee80211_key_conf *key)
2851{
2852 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
f5e28eac
JB		 2853 struct iwl_mvm_sta *mvmsta;
2854 struct iwl_mvm_key_pn *ptk_pn;
2855 int keyidx = key->keyidx;
8ca151b5 2856 int ret;
d6ee54a9 2857 u8 key_offset;
8ca151b5
JB		 2858
2859 if (iwlwifi_mod_params.sw_crypto) {
2860 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2861 return -EOPNOTSUPP;
2862 }
2863
2864 switch (key->cipher) {
2865 case WLAN_CIPHER_SUITE_TKIP:
2866 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1ad4f639 2867 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
8ca151b5 2868 break;
ca8c0f4b 2869 case WLAN_CIPHER_SUITE_CCMP:
2a53d166
AB		 2870 case WLAN_CIPHER_SUITE_GCMP:
2871 case WLAN_CIPHER_SUITE_GCMP_256:
ca8c0f4b
JB		 2872 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2873 break;
8ca151b5 2874 case WLAN_CIPHER_SUITE_AES_CMAC:
8e160ab8
AB		 2875 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2876 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
30686bf7 2877 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
8ca151b5
JB		 2878 break;
2879 case WLAN_CIPHER_SUITE_WEP40:
2880 case WLAN_CIPHER_SUITE_WEP104:
ba3943b0
JB		 2881 /* For non-client mode, only use WEP keys for TX as we probably
2882 * don't have a station yet anyway and would then have to keep
2883 * track of the keys, linking them to each of the clients/peers
2884 * as they appear. For now, don't do that, for performance WEP
2885 * offload doesn't really matter much, but we need it for some
2886 * other offload features in client mode.
8ca151b5 2887 */
ba3943b0
JB		 2888 if (vif->type != NL80211_IFTYPE_STATION)
2889 return 0;
2890 break;
8ca151b5 2891 default:
e36e5433
MS		 2892 /* currently FW supports only one optional cipher scheme */
2893 if (hw->n_cipher_schemes &&
2894 hw->cipher_schemes->cipher == key->cipher)
2895 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2896 else
2897 return -EOPNOTSUPP;
8ca151b5
JB		 2898 }
2899
2900 mutex_lock(&mvm->mutex);
2901
2902 switch (cmd) {
2903 case SET_KEY:
5023d966
JB		 2904 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2905 vif->type == NL80211_IFTYPE_AP) && !sta) {
2906 /*
2907 * GTK on AP interface is a TX-only key, return 0;
2908 * on IBSS they're per-station and because we're lazy
2909 * we don't support them for RX, so do the same.
8e160ab8 2910 * CMAC/GMAC in AP/IBSS modes must be done in software.
5023d966 2911 */
8e160ab8
AB		 2912 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2913 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2914 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
81279c49
JB		 2915 ret = -EOPNOTSUPP;
2916 else
2917 ret = 0;
6caffd4f
JB		 2918 key->hw_key_idx = STA_KEY_IDX_INVALID;
2919 break;
2920 }
2921
b546dcd6
JB		 2922 /* During FW restart, in order to restore the state as it was,
2923 * don't try to reprogram keys we previously failed for.
2924 */
2925 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2926 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2927 IWL_DEBUG_MAC80211(mvm,
2928 "skip invalid idx key programming during restart\n");
2929 ret = 0;
2930 break;
2931 }
2932
f5e28eac
JB		 2933 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2934 sta && iwl_mvm_has_new_rx_api(mvm) &&
2935 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2936 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2a53d166
AB		 2937 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2938 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
f5e28eac
JB		 2939 struct ieee80211_key_seq seq;
2940 int tid, q;
2941
2942 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2943 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2944 ptk_pn = kzalloc(sizeof(*ptk_pn) +
2945 mvm->trans->num_rx_queues *
2946 sizeof(ptk_pn->q[0]),
2947 GFP_KERNEL);
2948 if (!ptk_pn) {
2949 ret = -ENOMEM;
2950 break;
2951 }
2952
2953 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2954 ieee80211_get_key_rx_seq(key, tid, &seq);
2955 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2956 memcpy(ptk_pn->q[q].pn[tid],
2957 seq.ccmp.pn,
2958 IEEE80211_CCMP_PN_LEN);
2959 }
2960
2961 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2962 }
2963
d6ee54a9
LC		 2964 /* in HW restart reuse the index, otherwise request a new one */
2965 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2966 key_offset = key->hw_key_idx;
2967 else
2968 key_offset = STA_KEY_IDX_INVALID;
2969
8ca151b5 2970 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
d6ee54a9 2971 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
8ca151b5
JB		 2972 if (ret) {
2973 IWL_WARN(mvm, "set key failed\n");
2974 /*
2975 * can't add key for RX, but we don't need it
2976 * in the device for TX so still return 0
2977 */
6caffd4f 2978 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 2979 ret = 0;
2980 }
2981
2982 break;
2983 case DISABLE_KEY:
6caffd4f
JB		 2984 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2985 ret = 0;
2986 break;
2987 }
2988
f5e28eac
JB		 2989 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2990 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2991 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2a53d166
AB		 2992 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2993 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
f5e28eac
JB		 2994 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2995 ptk_pn = rcu_dereference_protected(
2996 mvmsta->ptk_pn[keyidx],
2997 lockdep_is_held(&mvm->mutex));
2998 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2999 if (ptk_pn)
3000 kfree_rcu(ptk_pn, rcu_head);
3001 }
3002
8ca151b5
JB		 3003 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3004 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3005 break;
3006 default:
3007 ret = -EINVAL;
3008 }
3009
3010 mutex_unlock(&mvm->mutex);
3011 return ret;
3012}
3013
3014static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3015 struct ieee80211_vif *vif,
3016 struct ieee80211_key_conf *keyconf,
3017 struct ieee80211_sta *sta,
3018 u32 iv32, u16 *phase1key)
3019{
3020 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3021
5023d966
JB		 3022 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3023 return;
3024
8ca151b5
JB		 3025 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3026}
3027
3028
b112889c
AM		 3029static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3030 struct iwl_rx_packet *pkt, void *data)
3031{
3032 struct iwl_mvm *mvm =
3033 container_of(notif_wait, struct iwl_mvm, notif_wait);
3034 struct iwl_hs20_roc_res *resp;
3035 int resp_len = iwl_rx_packet_payload_len(pkt);
3036 struct iwl_mvm_time_event_data *te_data = data;
3037
3038 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3039 return true;
3040
3041 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3042 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3043 return true;
3044 }
3045
3046 resp = (void *)pkt->data;
3047
3048 IWL_DEBUG_TE(mvm,
3049 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3050 resp->status, resp->event_unique_id);
3051
3052 te_data->uid = le32_to_cpu(resp->event_unique_id);
3053 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3054 te_data->uid);
3055
3056 spin_lock_bh(&mvm->time_event_lock);
3057 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3058 spin_unlock_bh(&mvm->time_event_lock);
3059
3060 return true;
3061}
3062
dc28e12f
MG		 3063#define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3064#define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3065#define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3066#define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3067#define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
b112889c
AM		 3068static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3069 struct ieee80211_channel *channel,
3070 struct ieee80211_vif *vif,
3071 int duration)
3072{
3073 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3074 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3075 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
6eb031d2 3076 static const u16 time_event_response[] = { HOT_SPOT_CMD };
b112889c 3077 struct iwl_notification_wait wait_time_event;
dc28e12f
MG		 3078 u32 dtim_interval = vif->bss_conf.dtim_period *
3079 vif->bss_conf.beacon_int;
3080 u32 req_dur, delay;
b112889c
AM		 3081 struct iwl_hs20_roc_req aux_roc_req = {
3082 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3083 .id_and_color =
3084 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3085 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3086 /* Set the channel info data */
57fbcce3 3087 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
b112889c
AM		 3088 PHY_BAND_24 : PHY_BAND_5,
3089 .channel_info.channel = channel->hw_value,
3090 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3091 /* Set the time and duration */
3092 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
b112889c
AM		 3093 };
3094
dc28e12f
MG		 3095 delay = AUX_ROC_MIN_DELAY;
3096 req_dur = MSEC_TO_TU(duration);
3097
3098 /*
3099 * If we are associated we want the delay time to be at least one
3100 * dtim interval so that the FW can wait until after the DTIM and
3101 * then start the time event, this will potentially allow us to
3102 * remain off-channel for the max duration.
3103 * Since we want to use almost a whole dtim interval we would also
3104 * like the delay to be for 2-3 dtim intervals, in case there are
3105 * other time events with higher priority.
3106 */
3107 if (vif->bss_conf.assoc) {
3108 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3109 /* We cannot remain off-channel longer than the DTIM interval */
3110 if (dtim_interval <= req_dur) {
3111 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3112 if (req_dur <= AUX_ROC_MIN_DURATION)
3113 req_dur = dtim_interval -
3114 AUX_ROC_MIN_SAFETY_BUFFER;
3115 }
3116 }
3117
3118 aux_roc_req.duration = cpu_to_le32(req_dur);
3119 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3120
3121 IWL_DEBUG_TE(mvm,
3122 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3123 channel->hw_value, req_dur, duration, delay,
3124 dtim_interval);
b112889c
AM		 3125 /* Set the node address */
3126 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3127
a6cc5163
MG		 3128 lockdep_assert_held(&mvm->mutex);
3129
3130 spin_lock_bh(&mvm->time_event_lock);
3131
3132 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3133 spin_unlock_bh(&mvm->time_event_lock);
3134 return -EIO;
3135 }
3136
b112889c
AM		 3137 te_data->vif = vif;
3138 te_data->duration = duration;
3139 te_data->id = HOT_SPOT_CMD;
3140
b112889c
AM		 3141 spin_unlock_bh(&mvm->time_event_lock);
3142
3143 /*
3144 * Use a notification wait, which really just processes the
3145 * command response and doesn't wait for anything, in order
3146 * to be able to process the response and get the UID inside
3147 * the RX path. Using CMD_WANT_SKB doesn't work because it
3148 * stores the buffer and then wakes up this thread, by which
3149 * time another notification (that the time event started)
3150 * might already be processed unsuccessfully.
3151 */
3152 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3153 time_event_response,
3154 ARRAY_SIZE(time_event_response),
3155 iwl_mvm_rx_aux_roc, te_data);
3156
3157 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3158 &aux_roc_req);
3159
3160 if (res) {
3161 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3162 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3163 goto out_clear_te;
3164 }
3165
3166 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3167 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3168 /* should never fail */
3169 WARN_ON_ONCE(res);
3170
3171 if (res) {
3172 out_clear_te:
3173 spin_lock_bh(&mvm->time_event_lock);
3174 iwl_mvm_te_clear_data(mvm, te_data);
3175 spin_unlock_bh(&mvm->time_event_lock);
3176 }
3177
3178 return res;
3179}
3180
8ca151b5
JB		 3181static int iwl_mvm_roc(struct ieee80211_hw *hw,
3182 struct ieee80211_vif *vif,
3183 struct ieee80211_channel *channel,
d339d5ca
IP		 3184 int duration,
3185 enum ieee80211_roc_type type)
8ca151b5
JB		 3186{
3187 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 3188 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 3189 struct cfg80211_chan_def chandef;
31d385ae
IP		 3190 struct iwl_mvm_phy_ctxt *phy_ctxt;
3191 int ret, i;
3192
3193 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3194 duration, type);
8ca151b5 3195
6ed13164
MG		 3196 flush_work(&mvm->roc_done_wk);
3197
a6cc5163
MG		 3198 mutex_lock(&mvm->mutex);
3199
b112889c
AM		 3200 switch (vif->type) {
3201 case NL80211_IFTYPE_STATION:
859d914c
JB		 3202 if (fw_has_capa(&mvm->fw->ucode_capa,
3203 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
5ac6c72e
LC		 3204 /* Use aux roc framework (HS20) */
3205 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3206 vif, duration);
3207 goto out_unlock;
3208 }
3209 IWL_ERR(mvm, "hotspot not supported\n");
3210 ret = -EINVAL;
a6cc5163 3211 goto out_unlock;
b112889c
AM		 3212 case NL80211_IFTYPE_P2P_DEVICE:
3213 /* handle below */
3214 break;
3215 default:
3216 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
a6cc5163
MG		 3217 ret = -EINVAL;
3218 goto out_unlock;
8ca151b5
JB		 3219 }
3220
31d385ae
IP		 3221 for (i = 0; i < NUM_PHY_CTX; i++) {
3222 phy_ctxt = &mvm->phy_ctxts[i];
3223 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3224 continue;
3225
3226 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3227 /*
3228 * Unbind the P2P_DEVICE from the current PHY context,
3229 * and if the PHY context is not used remove it.
3230 */
3231 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3232 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3233 goto out_unlock;
3234
3235 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3236
3237 /* Bind the P2P_DEVICE to the current PHY Context */
3238 mvmvif->phy_ctxt = phy_ctxt;
3239
3240 ret = iwl_mvm_binding_add_vif(mvm, vif);
3241 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3242 goto out_unlock;
3243
3244 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3245 goto schedule_time_event;
3246 }
3247 }
3248
3249 /* Need to update the PHY context only if the ROC channel changed */
3250 if (channel == mvmvif->phy_ctxt->channel)
3251 goto schedule_time_event;
3252
8ca151b5 3253 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 3254
31d385ae
IP		 3255 /*
3256 * Change the PHY context configuration as it is currently referenced
3257 * only by the P2P Device MAC
3258 */
3259 if (mvmvif->phy_ctxt->ref == 1) {
3260 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3261 &chandef, 1, 1);
3262 if (ret)
3263 goto out_unlock;
3264 } else {
3265 /*
3266 * The PHY context is shared with other MACs. Need to remove the
3267 * P2P Device from the binding, allocate an new PHY context and
3268 * create a new binding
3269 */
3270 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3271 if (!phy_ctxt) {
3272 ret = -ENOSPC;
3273 goto out_unlock;
3274 }
3275
3276 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3277 1, 1);
3278 if (ret) {
3279 IWL_ERR(mvm, "Failed to change PHY context\n");
3280 goto out_unlock;
3281 }
3282
3283 /* Unbind the P2P_DEVICE from the current PHY context */
3284 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3285 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3286 goto out_unlock;
3287
3288 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3289
3290 /* Bind the P2P_DEVICE to the new allocated PHY context */
3291 mvmvif->phy_ctxt = phy_ctxt;
3292
3293 ret = iwl_mvm_binding_add_vif(mvm, vif);
3294 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3295 goto out_unlock;
3296
3297 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3298 }
3299
3300schedule_time_event:
8ca151b5 3301 /* Schedule the time events */
e635c797 3302 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 3303
31d385ae 3304out_unlock:
8ca151b5
JB		 3305 mutex_unlock(&mvm->mutex);
3306 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 3307 return ret;
3308}
3309
3310static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3311{
3312 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3313
3314 IWL_DEBUG_MAC80211(mvm, "enter\n");
3315
3316 mutex_lock(&mvm->mutex);
bf5da87f 3317 iwl_mvm_stop_roc(mvm);
8ca151b5
JB		 3318 mutex_unlock(&mvm->mutex);
3319
3320 IWL_DEBUG_MAC80211(mvm, "leave\n");
3321 return 0;
3322}
3323
b08c1d97
LC		 3324static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3325 struct ieee80211_chanctx_conf *ctx)
8ca151b5 3326{
fe0f2de3
IP		 3327 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3328 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 3329 int ret;
3330
b08c1d97
LC		 3331 lockdep_assert_held(&mvm->mutex);
3332
53a9d61e 3333 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 3334
fe0f2de3
IP		 3335 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3336 if (!phy_ctxt) {
3337 ret = -ENOSPC;
3338 goto out;
3339 }
8ca151b5 3340
dcbc3e1a 3341 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
53a9d61e
IP		 3342 ctx->rx_chains_static,
3343 ctx->rx_chains_dynamic);
fe0f2de3
IP		 3344 if (ret) {
3345 IWL_ERR(mvm, "Failed to add PHY context\n");
3346 goto out;
3347 }
3348
53a9d61e 3349 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 3350 *phy_ctxt_id = phy_ctxt->id;
3351out:
b08c1d97
LC		 3352 return ret;
3353}
3354
3355static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3356 struct ieee80211_chanctx_conf *ctx)
3357{
3358 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3359 int ret;
3360
3361 mutex_lock(&mvm->mutex);
3362 ret = __iwl_mvm_add_chanctx(mvm, ctx);
8ca151b5 3363 mutex_unlock(&mvm->mutex);
b08c1d97 3364
8ca151b5
JB		 3365 return ret;
3366}
3367
b08c1d97
LC		 3368static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3369 struct ieee80211_chanctx_conf *ctx)
3370{
3371 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3372 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3373
3374 lockdep_assert_held(&mvm->mutex);
3375
3376 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3377}
3378
8ca151b5
JB		 3379static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3380 struct ieee80211_chanctx_conf *ctx)
3381{
3382 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 3383
3384 mutex_lock(&mvm->mutex);
b08c1d97 3385 __iwl_mvm_remove_chanctx(mvm, ctx);
8ca151b5
JB		 3386 mutex_unlock(&mvm->mutex);
3387}
3388
3389static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3390 struct ieee80211_chanctx_conf *ctx,
3391 u32 changed)
3392{
3393 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 3394 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3395 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 3396
31d385ae
IP		 3397 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3398 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3399 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2dceedae
AN		 3400 IEEE80211_CHANCTX_CHANGE_RADAR |
3401 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
31d385ae
IP		 3402 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3403 phy_ctxt->ref, changed))
3404 return;
3405
8ca151b5 3406 mutex_lock(&mvm->mutex);
4d66449a 3407 iwl_mvm_bt_coex_vif_change(mvm);
dcbc3e1a 3408 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
8ca151b5
JB		 3409 ctx->rx_chains_static,
3410 ctx->rx_chains_dynamic);
3411 mutex_unlock(&mvm->mutex);
3412}
3413
b08c1d97
LC		 3414static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3415 struct ieee80211_vif *vif,
f0c97783
LC		 3416 struct ieee80211_chanctx_conf *ctx,
3417 bool switching_chanctx)
8ca151b5 3418{
fe0f2de3
IP		 3419 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3420 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 3421 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3422 int ret;
3423
b08c1d97 3424 lockdep_assert_held(&mvm->mutex);
8ca151b5 3425
fe0f2de3 3426 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 3427
3428 switch (vif->type) {
3429 case NL80211_IFTYPE_AP:
4741dd04
LC		 3430 /* only needed if we're switching chanctx (i.e. during CSA) */
3431 if (switching_chanctx) {
bd3398e2
AO		 3432 mvmvif->ap_ibss_active = true;
3433 break;
3434 }
5023d966 3435 case NL80211_IFTYPE_ADHOC:
8ca151b5
JB		 3436 /*
3437 * The AP binding flow is handled as part of the start_ap flow
5023d966 3438 * (in bss_info_changed), similarly for IBSS.
8ca151b5
JB		 3439 */
3440 ret = 0;
b08c1d97 3441 goto out;
8ca151b5 3442 case NL80211_IFTYPE_STATION:
2533edce 3443 break;
8ca151b5 3444 case NL80211_IFTYPE_MONITOR:
2533edce
LC		 3445 /* always disable PS when a monitor interface is active */
3446 mvmvif->ps_disabled = true;
8ca151b5
JB		 3447 break;
3448 default:
3449 ret = -EINVAL;
b08c1d97 3450 goto out;
8ca151b5
JB		 3451 }
3452
3453 ret = iwl_mvm_binding_add_vif(mvm, vif);
3454 if (ret)
b08c1d97 3455 goto out;
8ca151b5
JB		 3456
3457 /*
92d85562
AB		 3458 * Power state must be updated before quotas,
3459 * otherwise fw will complain.
3460 */
999609f1 3461 iwl_mvm_power_update_mac(mvm);
92d85562
AB		 3462
3463 /* Setting the quota at this stage is only required for monitor
8ca151b5
JB		 3464 * interfaces. For the other types, the bss_info changed flow
3465 * will handle quota settings.
3466 */
3467 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 3468 mvmvif->monitor_active = true;
7754ae79 3469 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5
JB		 3470 if (ret)
3471 goto out_remove_binding;
0e39eb03
CRI		 3472
3473 ret = iwl_mvm_add_snif_sta(mvm, vif);
3474 if (ret)
3475 goto out_remove_binding;
3476
8ca151b5
JB		 3477 }
3478
bd3398e2 3479 /* Handle binding during CSA */
a57c688d 3480 if (vif->type == NL80211_IFTYPE_AP) {
7754ae79 3481 iwl_mvm_update_quotas(mvm, false, NULL);
3dfd3a97 3482 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
bd3398e2
AO		 3483 }
3484
4741dd04 3485 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
686e7fe1
LC		 3486 u32 duration = 2 * vif->bss_conf.beacon_int;
3487
3488 /* iwl_mvm_protect_session() reads directly from the
3489 * device (the system time), so make sure it is
3490 * available.
3491 */
3492 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3493 if (ret)
3494 goto out_remove_binding;
3495
3496 /* Protect the session to make sure we hear the first
3497 * beacon on the new channel.
3498 */
3499 iwl_mvm_protect_session(mvm, vif, duration, duration,
3500 vif->bss_conf.beacon_int / 2,
3501 true);
3502
3503 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3504
7754ae79 3505 iwl_mvm_update_quotas(mvm, false, NULL);
0ce04ce7
LC		 3506 }
3507
b08c1d97 3508 goto out;
8ca151b5 3509
b08c1d97 3510out_remove_binding:
8ca151b5 3511 iwl_mvm_binding_remove_vif(mvm, vif);
999609f1 3512 iwl_mvm_power_update_mac(mvm);
b08c1d97 3513out:
8ca151b5
JB		 3514 if (ret)
3515 mvmvif->phy_ctxt = NULL;
3516 return ret;
3517}
b08c1d97
LC		 3518static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3519 struct ieee80211_vif *vif,
3520 struct ieee80211_chanctx_conf *ctx)
8ca151b5
JB		 3521{
3522 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
b08c1d97 3523 int ret;
8ca151b5
JB		 3524
3525 mutex_lock(&mvm->mutex);
f0c97783 3526 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
b08c1d97
LC		 3527 mutex_unlock(&mvm->mutex);
3528
3529 return ret;
3530}
3531
3532static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3533 struct ieee80211_vif *vif,
f0c97783
LC		 3534 struct ieee80211_chanctx_conf *ctx,
3535 bool switching_chanctx)
b08c1d97
LC		 3536{
3537 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
f0c97783 3538 struct ieee80211_vif *disabled_vif = NULL;
b08c1d97
LC		 3539
3540 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 3541
3542 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3543
8ca151b5 3544 switch (vif->type) {
5023d966 3545 case NL80211_IFTYPE_ADHOC:
b08c1d97 3546 goto out;
8ca151b5 3547 case NL80211_IFTYPE_MONITOR:
1e1391ca 3548 mvmvif->monitor_active = false;
2533edce 3549 mvmvif->ps_disabled = false;
0e39eb03 3550 iwl_mvm_rm_snif_sta(mvm, vif);
8ca151b5 3551 break;
bd3398e2
AO		 3552 case NL80211_IFTYPE_AP:
3553 /* This part is triggered only during CSA */
4741dd04 3554 if (!switching_chanctx || !mvmvif->ap_ibss_active)
b08c1d97 3555 goto out;
bd3398e2 3556
7ef0aab6
AO		 3557 mvmvif->csa_countdown = false;
3558
003e5236
AO		 3559 /* Set CS bit on all the stations */
3560 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3561
3562 /* Save blocked iface, the timeout is set on the next beacon */
3563 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3564
bd3398e2 3565 mvmvif->ap_ibss_active = false;
f0c97783
LC		 3566 break;
3567 case NL80211_IFTYPE_STATION:
3568 if (!switching_chanctx)
3569 break;
3570
3571 disabled_vif = vif;
3572
3dfd3a97 3573 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
f0c97783 3574 break;
8ca151b5
JB		 3575 default:
3576 break;
3577 }
3578
7754ae79 3579 iwl_mvm_update_quotas(mvm, false, disabled_vif);
1e1391ca 3580 iwl_mvm_binding_remove_vif(mvm, vif);
1c2abf72 3581
b08c1d97 3582out:
a11e144e 3583 mvmvif->phy_ctxt = NULL;
999609f1 3584 iwl_mvm_power_update_mac(mvm);
b08c1d97
LC		 3585}
3586
3587static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3588 struct ieee80211_vif *vif,
3589 struct ieee80211_chanctx_conf *ctx)
3590{
3591 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3592
3593 mutex_lock(&mvm->mutex);
f0c97783 3594 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
8ca151b5
JB		 3595 mutex_unlock(&mvm->mutex);
3596}
3597
50cc9574
LC		 3598static int
3599iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3600 struct ieee80211_vif_chanctx_switch *vifs)
b08c1d97 3601{
b08c1d97
LC		 3602 int ret;
3603
b08c1d97 3604 mutex_lock(&mvm->mutex);
f0c97783 3605 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
b08c1d97
LC		 3606 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3607
3608 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3609 if (ret) {
3610 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3611 goto out_reassign;
3612 }
3613
f0c97783
LC		 3614 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3615 true);
b08c1d97
LC		 3616 if (ret) {
3617 IWL_ERR(mvm,
3618 "failed to assign new_ctx during channel switch\n");
3619 goto out_remove;
3620 }
3621
f697267f
AN		 3622 /* we don't support TDLS during DCM - can be caused by channel switch */
3623 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3624 iwl_mvm_teardown_tdls_peers(mvm);
3625
b08c1d97
LC		 3626 goto out;
3627
3628out_remove:
3629 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3630
3631out_reassign:
6fd1fb63 3632 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
b08c1d97
LC		 3633 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3634 goto out_restart;
3635 }
3636
6fd1fb63
LC		 3637 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3638 true)) {
b08c1d97
LC		 3639 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3640 goto out_restart;
3641 }
3642
3643 goto out;
3644
3645out_restart:
3646 /* things keep failing, better restart the hw */
3647 iwl_mvm_nic_restart(mvm, false);
3648
3649out:
3650 mutex_unlock(&mvm->mutex);
50cc9574
LC		 3651
3652 return ret;
3653}
3654
48a256e8
LC		 3655static int
3656iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3657 struct ieee80211_vif_chanctx_switch *vifs)
3658{
3659 int ret;
3660
3661 mutex_lock(&mvm->mutex);
3662 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3663
3664 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3665 true);
3666 if (ret) {
3667 IWL_ERR(mvm,
3668 "failed to assign new_ctx during channel switch\n");
3669 goto out_reassign;
3670 }
3671
3672 goto out;
3673
3674out_reassign:
3675 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3676 true)) {
3677 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3678 goto out_restart;
3679 }
3680
3681 goto out;
3682
3683out_restart:
3684 /* things keep failing, better restart the hw */
3685 iwl_mvm_nic_restart(mvm, false);
3686
3687out:
3688 mutex_unlock(&mvm->mutex);
3689
3690 return ret;
3691}
3692
50cc9574
LC		 3693static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3694 struct ieee80211_vif_chanctx_switch *vifs,
3695 int n_vifs,
3696 enum ieee80211_chanctx_switch_mode mode)
3697{
3698 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3699 int ret;
3700
3701 /* we only support a single-vif right now */
3702 if (n_vifs > 1)
3703 return -EOPNOTSUPP;
3704
3705 switch (mode) {
3706 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3707 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3708 break;
3709 case CHANCTX_SWMODE_REASSIGN_VIF:
48a256e8 3710 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
50cc9574
LC		 3711 break;
3712 default:
3713 ret = -EOPNOTSUPP;
3714 break;
3715 }
3716
b08c1d97
LC		 3717 return ret;
3718}
3719
8ca151b5
JB		 3720static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3721 struct ieee80211_sta *sta,
3722 bool set)
3723{
3724 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
9d8ce6af 3725 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 3726
3727 if (!mvm_sta || !mvm_sta->vif) {
3728 IWL_ERR(mvm, "Station is not associated to a vif\n");
3729 return -EINVAL;
3730 }
3731
3732 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3733}
3734
507cadf2
DS		 3735#ifdef CONFIG_NL80211_TESTMODE
3736static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3737 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3738 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
f6c6ad42 3739 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
507cadf2
DS		 3740};
3741
3742static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3743 struct ieee80211_vif *vif,
3744 void *data, int len)
3745{
3746 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3747 int err;
3748 u32 noa_duration;
3749
fceb6435
JB		 3750 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
3751 NULL);
507cadf2
DS		 3752 if (err)
3753 return err;
3754
3755 if (!tb[IWL_MVM_TM_ATTR_CMD])
3756 return -EINVAL;
3757
3758 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3759 case IWL_MVM_TM_CMD_SET_NOA:
3760 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3761 !vif->bss_conf.enable_beacon ||
3762 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3763 return -EINVAL;
3764
3765 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3766 if (noa_duration >= vif->bss_conf.beacon_int)
3767 return -EINVAL;
3768
3769 mvm->noa_duration = noa_duration;
3770 mvm->noa_vif = vif;
3771
7754ae79 3772 return iwl_mvm_update_quotas(mvm, false, NULL);
f6c6ad42
JB		 3773 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3774 /* must be associated client vif - ignore authorized */
3775 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3776 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3777 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3778 return -EINVAL;
3779
3780 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
a1022927
EG		 3781 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3782 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
507cadf2
DS		 3783 }
3784
3785 return -EOPNOTSUPP;
3786}
3787
3788static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3789 struct ieee80211_vif *vif,
3790 void *data, int len)
3791{
3792 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3793 int err;
3794
3795 mutex_lock(&mvm->mutex);
3796 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3797 mutex_unlock(&mvm->mutex);
3798
3799 return err;
3800}
3801#endif
3802
622e3f9b
LC		 3803static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3804 struct ieee80211_vif *vif,
3805 struct ieee80211_channel_switch *chsw)
3806{
3807 /* By implementing this operation, we prevent mac80211 from
3808 * starting its own channel switch timer, so that we can call
3809 * ieee80211_chswitch_done() ourselves at the right time
3810 * (which is when the absence time event starts).
3811 */
3812
3813 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3814 "dummy channel switch op\n");
3815}
3816
f028905c
LC		 3817static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3818 struct ieee80211_vif *vif,
3819 struct ieee80211_channel_switch *chsw)
bd3398e2
AO		 3820{
3821 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
664322fa 3822 struct ieee80211_vif *csa_vif;
f6c34820 3823 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
dc88b4ba 3824 u32 apply_time;
f028905c 3825 int ret;
bd3398e2
AO		 3826
3827 mutex_lock(&mvm->mutex);
664322fa 3828
81d62d5a
JB		 3829 mvmvif->csa_failed = false;
3830
6b20d774 3831 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
f028905c 3832 chsw->chandef.center_freq1);
6b20d774 3833
21023b1e 3834 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
f35d9c55 3835
6b20d774
LC		 3836 switch (vif->type) {
3837 case NL80211_IFTYPE_AP:
3838 csa_vif =
3839 rcu_dereference_protected(mvm->csa_vif,
3840 lockdep_is_held(&mvm->mutex));
3841 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3842 "Another CSA is already in progress")) {
3843 ret = -EBUSY;
3844 goto out_unlock;
3845 }
3846
d3a108a4
AO		 3847 /* we still didn't unblock tx. prevent new CS meanwhile */
3848 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
3849 lockdep_is_held(&mvm->mutex))) {
3850 ret = -EBUSY;
3851 goto out_unlock;
3852 }
3853
6b20d774 3854 rcu_assign_pointer(mvm->csa_vif, vif);
7ef0aab6 3855
7ef0aab6
AO		 3856 if (WARN_ONCE(mvmvif->csa_countdown,
3857 "Previous CSA countdown didn't complete")) {
3858 ret = -EBUSY;
3859 goto out_unlock;
3860 }
3861
d3a108a4
AO		 3862 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
3863
6b20d774 3864 break;
dc88b4ba 3865 case NL80211_IFTYPE_STATION:
03098268
AE		 3866 if (mvmvif->lqm_active)
3867 iwl_mvm_send_lqm_cmd(vif,
3868 LQM_CMD_OPERATION_STOP_MEASUREMENT,
3869 0, 0);
3870
4500e133
LC		 3871 /* Schedule the time event to a bit before beacon 1,
3872 * to make sure we're in the new channel when the
3873 * GO/AP arrives.
3874 */
3875 apply_time = chsw->device_timestamp +
3876 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3877 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
dc88b4ba
LC		 3878
3879 if (chsw->block_tx)
3880 iwl_mvm_csa_client_absent(mvm, vif);
3881
4500e133 3882 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
dc88b4ba 3883 apply_time);
c6e0a3e0
LC		 3884 if (mvmvif->bf_data.bf_enabled) {
3885 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3886 if (ret)
3887 goto out_unlock;
3888 }
3889
dc88b4ba 3890 break;
6b20d774
LC		 3891 default:
3892 break;
3893 }
bd3398e2 3894
f6c34820
LC		 3895 mvmvif->ps_disabled = true;
3896
3897 ret = iwl_mvm_power_update_ps(mvm);
3898 if (ret)
3899 goto out_unlock;
f028905c 3900
e198f5e7
AN		 3901 /* we won't be on this channel any longer */
3902 iwl_mvm_teardown_tdls_peers(mvm);
3903
bd3398e2
AO		 3904out_unlock:
3905 mutex_unlock(&mvm->mutex);
f028905c
LC		 3906
3907 return ret;
bd3398e2
AO		 3908}
3909
f6c34820
LC		 3910static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3911 struct ieee80211_vif *vif)
3912{
3913 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3914 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3915 int ret;
3916
3917 mutex_lock(&mvm->mutex);
3918
81d62d5a
JB		 3919 if (mvmvif->csa_failed) {
3920 mvmvif->csa_failed = false;
3921 ret = -EIO;
3922 goto out_unlock;
3923 }
3924
a57c688d
LC		 3925 if (vif->type == NL80211_IFTYPE_STATION) {
3926 struct iwl_mvm_sta *mvmsta;
3927
3928 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3929 mvmvif->ap_sta_id);
3930
3931 if (WARN_ON(!mvmsta)) {
3932 ret = -EIO;
3933 goto out_unlock;
3934 }
3935
3936 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3937
3938 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
c6e0a3e0
LC		 3939
3940 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3941 if (ret)
3942 goto out_unlock;
686e7fe1
LC		 3943
3944 iwl_mvm_stop_session_protection(mvm, vif);
a57c688d
LC		 3945 }
3946
f6c34820
LC		 3947 mvmvif->ps_disabled = false;
3948
3949 ret = iwl_mvm_power_update_ps(mvm);
3950
a57c688d 3951out_unlock:
f6c34820
LC		 3952 mutex_unlock(&mvm->mutex);
3953
3954 return ret;
3955}
3956
c5b0e7c0
EG		 3957static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3958 struct ieee80211_vif *vif, u32 queues, bool drop)
3959{
3960 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3961 struct iwl_mvm_vif *mvmvif;
3962 struct iwl_mvm_sta *mvmsta;
a0f6bf2a
AN		 3963 struct ieee80211_sta *sta;
3964 int i;
3965 u32 msk = 0;
c5b0e7c0
EG		 3966
3967 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3968 return;
3969
24afba76
LK		 3970 /* Make sure we're done with the deferred traffic before flushing */
3971 if (iwl_mvm_is_dqa_supported(mvm))
3972 flush_work(&mvm->add_stream_wk);
3973
c5b0e7c0
EG		 3974 mutex_lock(&mvm->mutex);
3975 mvmvif = iwl_mvm_vif_from_mac80211(vif);
c5b0e7c0 3976
a0f6bf2a 3977 /* flush the AP-station and all TDLS peers */
0ae98812 3978 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
a0f6bf2a
AN		 3979 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3980 lockdep_is_held(&mvm->mutex));
3981 if (IS_ERR_OR_NULL(sta))
3982 continue;
3983
3984 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3985 if (mvmsta->vif != vif)
3986 continue;
3987
3988 /* make sure only TDLS peers or the AP are flushed */
3989 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3990
3991 msk |= mvmsta->tfd_queue_msk;
480acbce 3992 }
c5b0e7c0 3993
6d440b25 3994 if (drop) {
5888a40c 3995 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
6d440b25
EG		 3996 IWL_ERR(mvm, "flush request fail\n");
3997 mutex_unlock(&mvm->mutex);
3998 } else {
3999 mutex_unlock(&mvm->mutex);
4e6c48e0 4000
6d440b25
EG		 4001 /* this can take a while, and we may need/want other operations
4002 * to succeed while doing this, so do it without the mutex held
4003 */
a1a57877 4004 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
6d440b25 4005 }
c5b0e7c0
EG		 4006}
4007
91a8bcde
JB		 4008static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4009 struct survey_info *survey)
4010{
4011 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4012 int ret;
4013
4014 memset(survey, 0, sizeof(*survey));
4015
4016 /* only support global statistics right now */
4017 if (idx != 0)
4018 return -ENOENT;
4019
280a3efa
JB		 4020 if (!fw_has_capa(&mvm->fw->ucode_capa,
4021 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
91a8bcde
JB		 4022 return -ENOENT;
4023
4024 mutex_lock(&mvm->mutex);
4025
4026 if (mvm->ucode_loaded) {
33cef925 4027 ret = iwl_mvm_request_statistics(mvm, false);
91a8bcde
JB		 4028 if (ret)
4029 goto out;
4030 }
4031
4032 survey->filled = SURVEY_INFO_TIME |
4033 SURVEY_INFO_TIME_RX |
4034 SURVEY_INFO_TIME_TX |
4035 SURVEY_INFO_TIME_SCAN;
4036 survey->time = mvm->accu_radio_stats.on_time_rf +
4037 mvm->radio_stats.on_time_rf;
4038 do_div(survey->time, USEC_PER_MSEC);
4039
4040 survey->time_rx = mvm->accu_radio_stats.rx_time +
4041 mvm->radio_stats.rx_time;
4042 do_div(survey->time_rx, USEC_PER_MSEC);
4043
4044 survey->time_tx = mvm->accu_radio_stats.tx_time +
4045 mvm->radio_stats.tx_time;
4046 do_div(survey->time_tx, USEC_PER_MSEC);
4047
4048 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4049 mvm->radio_stats.on_time_scan;
4050 do_div(survey->time_scan, USEC_PER_MSEC);
4051
10a7c028 4052 ret = 0;
91a8bcde
JB		 4053 out:
4054 mutex_unlock(&mvm->mutex);
4055 return ret;
4056}
4057
33cef925
JB		 4058static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4059 struct ieee80211_vif *vif,
4060 struct ieee80211_sta *sta,
4061 struct station_info *sinfo)
4062{
4063 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4064 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4065 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4066
988b5968
SS		 4067 if (mvmsta->avg_energy) {
4068 sinfo->signal_avg = mvmsta->avg_energy;
4069 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
4070 }
4071
280a3efa
JB		 4072 if (!fw_has_capa(&mvm->fw->ucode_capa,
4073 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
33cef925
JB		 4074 return;
4075
4076 /* if beacon filtering isn't on mac80211 does it anyway */
4077 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4078 return;
4079
4080 if (!vif->bss_conf.assoc)
4081 return;
4082
4083 mutex_lock(&mvm->mutex);
4084
4085 if (mvmvif->ap_sta_id != mvmsta->sta_id)
4086 goto unlock;
4087
4088 if (iwl_mvm_request_statistics(mvm, false))
4089 goto unlock;
4090
4091 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4092 mvmvif->beacon_stats.accu_num_beacons;
4093 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
4094 if (mvmvif->beacon_stats.avg_signal) {
4095 /* firmware only reports a value after RXing a few beacons */
4096 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4097 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4098 }
4099 unlock:
4100 mutex_unlock(&mvm->mutex);
4101}
4102
4203263d
EG		 4103static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4104 struct ieee80211_vif *vif,
4105 const struct ieee80211_event *event)
d42f5350 4106{
5d4f929e 4107#define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
d42f5350
EG		 4108 do { \
4109 if ((_cnt) && --(_cnt)) \
4110 break; \
5d4f929e 4111 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
d42f5350
EG		 4112 } while (0)
4113
d42f5350
EG		 4114 struct iwl_fw_dbg_trigger_tlv *trig;
4115 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
d42f5350
EG		 4116
4117 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4118 return;
4119
d42f5350
EG		 4120 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4121 trig_mlme = (void *)trig->data;
4122 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4123 return;
4124
d42f5350
EG		 4125 if (event->u.mlme.data == ASSOC_EVENT) {
4126 if (event->u.mlme.status == MLME_DENIED)
4127 CHECK_MLME_TRIGGER(mvm, trig, buf,
4128 trig_mlme->stop_assoc_denied,
4129 "DENIED ASSOC: reason %d",
4130 event->u.mlme.reason);
4131 else if (event->u.mlme.status == MLME_TIMEOUT)
4132 CHECK_MLME_TRIGGER(mvm, trig, buf,
4133 trig_mlme->stop_assoc_timeout,
4134 "ASSOC TIMEOUT");
4135 } else if (event->u.mlme.data == AUTH_EVENT) {
4136 if (event->u.mlme.status == MLME_DENIED)
4137 CHECK_MLME_TRIGGER(mvm, trig, buf,
4138 trig_mlme->stop_auth_denied,
4139 "DENIED AUTH: reason %d",
4140 event->u.mlme.reason);
4141 else if (event->u.mlme.status == MLME_TIMEOUT)
4142 CHECK_MLME_TRIGGER(mvm, trig, buf,
4143 trig_mlme->stop_auth_timeout,
4144 "AUTH TIMEOUT");
4145 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4146 CHECK_MLME_TRIGGER(mvm, trig, buf,
4147 trig_mlme->stop_rx_deauth,
4148 "DEAUTH RX %d", event->u.mlme.reason);
4149 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4150 CHECK_MLME_TRIGGER(mvm, trig, buf,
4151 trig_mlme->stop_tx_deauth,
4152 "DEAUTH TX %d", event->u.mlme.reason);
4153 }
4154#undef CHECK_MLME_TRIGGER
4155}
4156
4203263d
EG		 4157static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4158 struct ieee80211_vif *vif,
4159 const struct ieee80211_event *event)
4160{
4161 struct iwl_fw_dbg_trigger_tlv *trig;
4162 struct iwl_fw_dbg_trigger_ba *ba_trig;
4163
4164 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4165 return;
4166
4167 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4168 ba_trig = (void *)trig->data;
4169 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4170 return;
4171
4172 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4173 return;
4174
4175 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4176 "BAR received from %pM, tid %d, ssn %d",
4177 event->u.ba.sta->addr, event->u.ba.tid,
4178 event->u.ba.ssn);
4179}
4180
4181static void
4182iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4183 struct ieee80211_vif *vif,
4184 const struct ieee80211_event *event)
4185{
4186 struct iwl_fw_dbg_trigger_tlv *trig;
4187 struct iwl_fw_dbg_trigger_ba *ba_trig;
4188
4189 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4190 return;
4191
4192 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4193 ba_trig = (void *)trig->data;
4194 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4195 return;
4196
4197 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4198 return;
4199
4200 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4201 "Frame from %pM timed out, tid %d",
4202 event->u.ba.sta->addr, event->u.ba.tid);
4203}
4204
4205static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4206 struct ieee80211_vif *vif,
4207 const struct ieee80211_event *event)
4208{
4209 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4210
4211 switch (event->type) {
4212 case MLME_EVENT:
4213 iwl_mvm_event_mlme_callback(mvm, vif, event);
4214 break;
4215 case BAR_RX_EVENT:
4216 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4217 break;
4218 case BA_FRAME_TIMEOUT:
4219 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4220 break;
4221 default:
4222 break;
4223 }
4224}
4225
d0ff5d22
SS		 4226void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4227 struct iwl_mvm_internal_rxq_notif *notif,
4228 u32 size)
0636b938 4229{
0636b938
SS		 4230 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4231 int ret;
4232
4233 lockdep_assert_held(&mvm->mutex);
4234
bc029469
SS		 4235 /* TODO - remove a000 disablement when we have RXQ config API */
4236 if (!iwl_mvm_has_new_rx_api(mvm) || iwl_mvm_has_new_tx_api(mvm))
0636b938
SS		 4237 return;
4238
d0ff5d22
SS		 4239 notif->cookie = mvm->queue_sync_cookie;
4240
4241 if (notif->sync)
4242 atomic_set(&mvm->queue_sync_counter,
4243 mvm->trans->num_rx_queues);
0636b938 4244
d0ff5d22 4245 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
0636b938
SS		 4246 if (ret) {
4247 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4248 goto out;
4249 }
d0ff5d22
SS		 4250
4251 if (notif->sync)
3a732c65 4252 ret = wait_event_timeout(mvm->rx_sync_waitq,
d0ff5d22
SS		 4253 atomic_read(&mvm->queue_sync_counter) == 0,
4254 HZ);
0636b938
SS		 4255 WARN_ON_ONCE(!ret);
4256
4257out:
4258 atomic_set(&mvm->queue_sync_counter, 0);
4259 mvm->queue_sync_cookie++;
4260}
4261
4262static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4263{
4264 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
d0ff5d22
SS		 4265 struct iwl_mvm_internal_rxq_notif data = {
4266 .type = IWL_MVM_RXQ_EMPTY,
4267 .sync = 1,
4268 };
0636b938
SS		 4269
4270 mutex_lock(&mvm->mutex);
d0ff5d22 4271 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
0636b938
SS		 4272 mutex_unlock(&mvm->mutex);
4273}
4274
e5209263 4275const struct ieee80211_ops iwl_mvm_hw_ops = {
8ca151b5
JB		 4276 .tx = iwl_mvm_mac_tx,
4277 .ampdu_action = iwl_mvm_mac_ampdu_action,
4278 .start = iwl_mvm_mac_start,
cf2c92d8 4279 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
8ca151b5
JB		 4280 .stop = iwl_mvm_mac_stop,
4281 .add_interface = iwl_mvm_mac_add_interface,
4282 .remove_interface = iwl_mvm_mac_remove_interface,
4283 .config = iwl_mvm_mac_config,
e59647ea 4284 .prepare_multicast = iwl_mvm_prepare_multicast,
8ca151b5 4285 .configure_filter = iwl_mvm_configure_filter,
effd1929 4286 .config_iface_filter = iwl_mvm_config_iface_filter,
8ca151b5
JB		 4287 .bss_info_changed = iwl_mvm_bss_info_changed,
4288 .hw_scan = iwl_mvm_mac_hw_scan,
4289 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1ddbbb0c 4290 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
8ca151b5
JB		 4291 .sta_state = iwl_mvm_mac_sta_state,
4292 .sta_notify = iwl_mvm_mac_sta_notify,
4293 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3e56eadf 4294 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
8ca151b5 4295 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1f3b0ff8 4296 .sta_rc_update = iwl_mvm_sta_rc_update,
8ca151b5
JB		 4297 .conf_tx = iwl_mvm_mac_conf_tx,
4298 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
07ecd897 4299 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
c5b0e7c0 4300 .flush = iwl_mvm_mac_flush,
35a000b7
DS		 4301 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4302 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
8ca151b5
JB		 4303 .set_key = iwl_mvm_mac_set_key,
4304 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4305 .remain_on_channel = iwl_mvm_roc,
4306 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
8ca151b5
JB		 4307 .add_chanctx = iwl_mvm_add_chanctx,
4308 .remove_chanctx = iwl_mvm_remove_chanctx,
4309 .change_chanctx = iwl_mvm_change_chanctx,
4310 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4311 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
b08c1d97 4312 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
8ca151b5 4313
5023d966
JB		 4314 .start_ap = iwl_mvm_start_ap_ibss,
4315 .stop_ap = iwl_mvm_stop_ap_ibss,
4316 .join_ibss = iwl_mvm_start_ap_ibss,
4317 .leave_ibss = iwl_mvm_stop_ap_ibss,
8ca151b5
JB		 4318
4319 .set_tim = iwl_mvm_set_tim,
4320
622e3f9b 4321 .channel_switch = iwl_mvm_channel_switch,
f028905c 4322 .pre_channel_switch = iwl_mvm_pre_channel_switch,
f6c34820 4323 .post_channel_switch = iwl_mvm_post_channel_switch,
bd3398e2 4324
1d3c3f63
AN		 4325 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4326 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4327 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4328
d42f5350
EG		 4329 .event_callback = iwl_mvm_mac_event_callback,
4330
0636b938
SS		 4331 .sync_rx_queues = iwl_mvm_sync_rx_queues,
4332
507cadf2
DS		 4333 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4334
8ca151b5
JB		 4335#ifdef CONFIG_PM_SLEEP
4336 /* look at d3.c */
4337 .suspend = iwl_mvm_suspend,
4338 .resume = iwl_mvm_resume,
4339 .set_wakeup = iwl_mvm_set_wakeup,
4340 .set_rekey_data = iwl_mvm_set_rekey_data,
4341#if IS_ENABLED(CONFIG_IPV6)
4342 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4343#endif
4344 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4345#endif
91a8bcde 4346 .get_survey = iwl_mvm_mac_get_survey,
33cef925 4347 .sta_statistics = iwl_mvm_mac_sta_statistics,
8ca151b5 4348};
A mirror of Linus' kernel repository