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iwlwifi: use bitfield.h for some registers
[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);
de8ba41b 738 mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
b7327d89 739
91b08c2d
AE		 740 if (mvm->cfg->vht_mu_mimo_supported)
741 wiphy_ext_feature_set(hw->wiphy,
742 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
743
b7327d89 744 return ret;
8ca151b5
JB		 745}
746
b2492501
AN		 747static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
748 struct ieee80211_sta *sta,
749 struct sk_buff *skb)
750{
751 struct iwl_mvm_sta *mvmsta;
752 bool defer = false;
753
754 /*
755 * double check the IN_D0I3 flag both before and after
756 * taking the spinlock, in order to prevent taking
757 * the spinlock when not needed.
758 */
759 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
760 return false;
761
762 spin_lock(&mvm->d0i3_tx_lock);
763 /*
764 * testing the flag again ensures the skb dequeue
765 * loop (on d0i3 exit) hasn't run yet.
766 */
767 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
768 goto out;
769
770 mvmsta = iwl_mvm_sta_from_mac80211(sta);
0ae98812 771 if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
b2492501
AN		 772 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
773 goto out;
774
775 __skb_queue_tail(&mvm->d0i3_tx, skb);
776 ieee80211_stop_queues(mvm->hw);
777
778 /* trigger wakeup */
779 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
780 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
781
782 defer = true;
783out:
784 spin_unlock(&mvm->d0i3_tx_lock);
785 return defer;
786}
787
8ca151b5
JB		 788static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
789 struct ieee80211_tx_control *control,
790 struct sk_buff *skb)
791{
792 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3e56eadf
JB		 793 struct ieee80211_sta *sta = control->sta;
794 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
795 struct ieee80211_hdr *hdr = (void *)skb->data;
8ca151b5 796
9ee718aa
EL		 797 if (iwl_mvm_is_radio_killed(mvm)) {
798 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
8ca151b5
JB		 799 goto drop;
800 }
801
398e8c6c 802 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
a6cc5163
MG		 803 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
804 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
8ca151b5
JB		 805 goto drop;
806
3e56eadf
JB		 807 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
808 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
809 ieee80211_is_mgmt(hdr->frame_control) &&
810 !ieee80211_is_deauth(hdr->frame_control) &&
811 !ieee80211_is_disassoc(hdr->frame_control) &&
812 !ieee80211_is_action(hdr->frame_control)))
813 sta = NULL;
814
815 if (sta) {
b2492501
AN		 816 if (iwl_mvm_defer_tx(mvm, sta, skb))
817 return;
3e56eadf 818 if (iwl_mvm_tx_skb(mvm, skb, sta))
8ca151b5
JB		 819 goto drop;
820 return;
821 }
822
823 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
824 goto drop;
825 return;
826 drop:
827 ieee80211_free_txskb(hw, skb);
828}
829
205e2210
EG		 830static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
831{
832 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
833 return false;
834 return true;
835}
836
837static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
838{
839 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
840 return false;
841 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
842 return true;
843
844 /* enabled by default */
845 return true;
846}
847
4203263d
EG		 848#define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
849 do { \
850 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
851 break; \
852 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
853 } while (0)
854
855static void
856iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
857 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
858 enum ieee80211_ampdu_mlme_action action)
859{
860 struct iwl_fw_dbg_trigger_tlv *trig;
861 struct iwl_fw_dbg_trigger_ba *ba_trig;
862
863 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
864 return;
865
866 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
867 ba_trig = (void *)trig->data;
868
869 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
870 return;
871
872 switch (action) {
873 case IEEE80211_AMPDU_TX_OPERATIONAL: {
874 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
875 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
876
877 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
878 "TX AGG START: MAC %pM tid %d ssn %d\n",
879 sta->addr, tid, tid_data->ssn);
880 break;
881 }
882 case IEEE80211_AMPDU_TX_STOP_CONT:
883 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
884 "TX AGG STOP: MAC %pM tid %d\n",
885 sta->addr, tid);
886 break;
887 case IEEE80211_AMPDU_RX_START:
888 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
889 "RX AGG START: MAC %pM tid %d ssn %d\n",
890 sta->addr, tid, rx_ba_ssn);
891 break;
892 case IEEE80211_AMPDU_RX_STOP:
893 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
894 "RX AGG STOP: MAC %pM tid %d\n",
895 sta->addr, tid);
896 break;
897 default:
898 break;
899 }
900}
901
8ca151b5
JB		 902static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
903 struct ieee80211_vif *vif,
50ea05ef 904 struct ieee80211_ampdu_params *params)
8ca151b5
JB		 905{
906 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
907 int ret;
b2492501 908 bool tx_agg_ref = false;
50ea05ef
SS		 909 struct ieee80211_sta *sta = params->sta;
910 enum ieee80211_ampdu_mlme_action action = params->action;
911 u16 tid = params->tid;
912 u16 *ssn = &params->ssn;
913 u8 buf_size = params->buf_size;
bb81bb68 914 bool amsdu = params->amsdu;
10b2b201 915 u16 timeout = params->timeout;
8ca151b5
JB		 916
917 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
918 sta->addr, tid, action);
919
920 if (!(mvm->nvm_data->sku_cap_11n_enable))
921 return -EACCES;
922
b2492501 923 /* return from D0i3 before starting a new Tx aggregation */
9256c205
EP		 924 switch (action) {
925 case IEEE80211_AMPDU_TX_START:
926 case IEEE80211_AMPDU_TX_STOP_CONT:
927 case IEEE80211_AMPDU_TX_STOP_FLUSH:
928 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
929 case IEEE80211_AMPDU_TX_OPERATIONAL:
b2492501 930 /*
9256c205
EP		 931 * for tx start, wait synchronously until D0i3 exit to
932 * get the correct sequence number for the tid.
933 * additionally, some other ampdu actions use direct
934 * target access, which is not handled automatically
935 * by the trans layer (unlike commands), so wait for
936 * d0i3 exit in these cases as well.
b2492501 937 */
d40fc489
GG		 938 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
939 if (ret)
940 return ret;
941
942 tx_agg_ref = true;
9256c205
EP		 943 break;
944 default:
945 break;
b2492501
AN		 946 }
947
8ca151b5
JB		 948 mutex_lock(&mvm->mutex);
949
950 switch (action) {
951 case IEEE80211_AMPDU_RX_START:
205e2210 952 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
8ca151b5
JB		 953 ret = -EINVAL;
954 break;
955 }
10b2b201
SS		 956 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
957 timeout);
8ca151b5
JB		 958 break;
959 case IEEE80211_AMPDU_RX_STOP:
10b2b201
SS		 960 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
961 timeout);
8ca151b5
JB		 962 break;
963 case IEEE80211_AMPDU_TX_START:
205e2210 964 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
5d158efa
EG		 965 ret = -EINVAL;
966 break;
967 }
8ca151b5
JB		 968 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
969 break;
970 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 971 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
972 break;
8ca151b5
JB		 973 case IEEE80211_AMPDU_TX_STOP_FLUSH:
974 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 975 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 976 break;
977 case IEEE80211_AMPDU_TX_OPERATIONAL:
bb81bb68
EG		 978 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
979 buf_size, amsdu);
8ca151b5
JB		 980 break;
981 default:
982 WARN_ON_ONCE(1);
983 ret = -EINVAL;
984 break;
985 }
4203263d
EG		 986
987 if (!ret) {
988 u16 rx_ba_ssn = 0;
989
990 if (action == IEEE80211_AMPDU_RX_START)
991 rx_ba_ssn = *ssn;
992
993 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
994 rx_ba_ssn, action);
995 }
8ca151b5
JB		 996 mutex_unlock(&mvm->mutex);
997
b2492501
AN		 998 /*
999 * If the tid is marked as started, we won't use it for offloaded
1000 * traffic on the next D0i3 entry. It's safe to unref.
1001 */
1002 if (tx_agg_ref)
1003 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
1004
8ca151b5
JB		 1005 return ret;
1006}
1007
1008static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1009 struct ieee80211_vif *vif)
1010{
1011 struct iwl_mvm *mvm = data;
1012 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1013
1014 mvmvif->uploaded = false;
0ae98812 1015 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
8ca151b5 1016
8ca151b5
JB		 1017 spin_lock_bh(&mvm->time_event_lock);
1018 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1019 spin_unlock_bh(&mvm->time_event_lock);
1020
fe0f2de3 1021 mvmvif->phy_ctxt = NULL;
8a275bad 1022 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
8ca151b5
JB		 1023}
1024
1025static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1026{
58629d9d
JB		 1027 /* clear the D3 reconfig, we only need it to avoid dumping a
1028 * firmware coredump on reconfiguration, we shouldn't do that
1029 * on D3->D0 transition
1030 */
b6eaa45a
EG		 1031 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1032 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
58629d9d 1033 iwl_mvm_fw_error_dump(mvm);
b6eaa45a 1034 }
1bd3cbc1 1035
744cb695
EP		 1036 /* cleanup all stale references (scan, roc), but keep the
1037 * ucode_down ref until reconfig is complete
1038 */
1039 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1040
fcb6b92a 1041 iwl_mvm_stop_device(mvm);
8ca151b5 1042
9af91f46 1043 mvm->scan_status = 0;
b1873300 1044 mvm->ps_disabled = false;
31b8b343 1045 mvm->calibrating = false;
8ca151b5
JB		 1046
1047 /* just in case one was running */
305d236e 1048 iwl_mvm_cleanup_roc_te(mvm);
8ca151b5
JB		 1049 ieee80211_remain_on_channel_expired(mvm->hw);
1050
737719fe
AN		 1051 /*
1052 * cleanup all interfaces, even inactive ones, as some might have
1053 * gone down during the HW restart
1054 */
1055 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
8ca151b5 1056
fe0f2de3 1057 mvm->p2p_device_vif = NULL;
0ae98812 1058 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
fe0f2de3
IP		 1059
1060 iwl_mvm_reset_phy_ctxts(mvm);
9c3deeb5 1061 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
8ca151b5 1062 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
24afba76 1063 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
a0f6bf2a 1064 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
8a275bad 1065 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
8a275bad 1066 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
8ca151b5
JB		 1067
1068 ieee80211_wake_queues(mvm->hw);
1069
228670b2
EP		 1070 /* clear any stale d0i3 state */
1071 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1072
8ca151b5 1073 mvm->vif_count = 0;
113a0447 1074 mvm->rx_ba_sessions = 0;
d2709ad7 1075 mvm->fw_dbg_conf = FW_DBG_INVALID;
91a8bcde
JB		 1076
1077 /* keep statistics ticking */
1078 iwl_mvm_accu_radio_stats(mvm);
8ca151b5
JB		 1079}
1080
a0a09243 1081int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
8ca151b5 1082{
8ca151b5
JB		 1083 int ret;
1084
a0a09243 1085 lockdep_assert_held(&mvm->mutex);
8ca151b5 1086
a42b2af3
LC		 1087 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1088 /* Clean up some internal and mac80211 state on restart */
8ca151b5 1089 iwl_mvm_restart_cleanup(mvm);
a42b2af3
LC		 1090 } else {
1091 /* Hold the reference to prevent runtime suspend while
1092 * the start procedure runs. It's a bit confusing
1093 * that the UCODE_DOWN reference is taken, but it just
1094 * means "UCODE is not UP yet". ( TODO: rename this
1095 * reference).
1096 */
1097 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1098 }
8ca151b5 1099 ret = iwl_mvm_up(mvm);
c47af22a
JB		 1100
1101 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1102 /* Something went wrong - we need to finish some cleanup
1103 * that normally iwl_mvm_mac_restart_complete() below
1104 * would do.
1105 */
1106 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1107 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1108 }
1109
a0a09243
LC		 1110 return ret;
1111}
1112
1113static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1114{
1115 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1116 int ret;
1117
37948fcf
EP		 1118 /* Some hw restart cleanups must not hold the mutex */
1119 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1120 /*
1121 * Make sure we are out of d0i3. This is needed
1122 * to make sure the reference accounting is correct
1123 * (and there is no stale d0i3_exit_work).
1124 */
1125 wait_event_timeout(mvm->d0i3_exit_waitq,
1126 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1127 &mvm->status),
1128 HZ);
1129 }
1130
a0a09243
LC		 1131 mutex_lock(&mvm->mutex);
1132 ret = __iwl_mvm_mac_start(mvm);
8ca151b5
JB		 1133 mutex_unlock(&mvm->mutex);
1134
1135 return ret;
1136}
1137
cf2c92d8 1138static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
8ca151b5 1139{
8ca151b5
JB		 1140 int ret;
1141
1142 mutex_lock(&mvm->mutex);
1143
1144 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
b2492501 1145 iwl_mvm_d0i3_enable_tx(mvm, NULL);
e7afe89f 1146 ret = iwl_mvm_update_quotas(mvm, true, NULL);
8ca151b5
JB		 1147 if (ret)
1148 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1149 ret);
1150
7498cf4c
EP		 1151 /* allow transport/FW low power modes */
1152 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1153
cbd2ae2d
AN		 1154 /*
1155 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1156 * of packets the FW sent out, so we must reconnect.
1157 */
1158 iwl_mvm_teardown_tdls_peers(mvm);
1159
8ca151b5
JB		 1160 mutex_unlock(&mvm->mutex);
1161}
1162
088070a2
EP		 1163static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1164{
b7282643
LC		 1165 if (iwl_mvm_is_d0i3_supported(mvm) &&
1166 iwl_mvm_enter_d0i3_on_suspend(mvm))
1167 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1168 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1169 &mvm->status),
1170 HZ),
1171 "D0i3 exit on resume timed out\n");
088070a2
EP		 1172}
1173
cf2c92d8
EP		 1174static void
1175iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1176 enum ieee80211_reconfig_type reconfig_type)
1177{
1178 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1179
1180 switch (reconfig_type) {
1181 case IEEE80211_RECONFIG_TYPE_RESTART:
1182 iwl_mvm_restart_complete(mvm);
1183 break;
1184 case IEEE80211_RECONFIG_TYPE_SUSPEND:
088070a2 1185 iwl_mvm_resume_complete(mvm);
cf2c92d8
EP		 1186 break;
1187 }
1188}
1189
a0a09243 1190void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
8ca151b5 1191{
a0a09243 1192 lockdep_assert_held(&mvm->mutex);
7498cf4c 1193
91a8bcde
JB		 1194 /* firmware counters are obviously reset now, but we shouldn't
1195 * partially track so also clear the fw_reset_accu counters.
1196 */
1197 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1198
8ca151b5
JB		 1199 /* async_handlers_wk is now blocked */
1200
1201 /*
1202 * The work item could be running or queued if the
1203 * ROC time event stops just as we get here.
1204 */
c779273b 1205 flush_work(&mvm->roc_done_wk);
8ca151b5 1206
fcb6b92a 1207 iwl_mvm_stop_device(mvm);
8ca151b5
JB		 1208
1209 iwl_mvm_async_handlers_purge(mvm);
1210 /* async_handlers_list is empty and will stay empty: HW is stopped */
1211
1212 /* the fw is stopped, the aux sta is dead: clean up driver state */
712b24ad 1213 iwl_mvm_del_aux_sta(mvm);
8ca151b5 1214
0a79a0c0
EP		 1215 /*
1216 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1217 * won't be called in this case).
8b2b9fbf
AN		 1218 * But make sure to cleanup interfaces that have gone down before/during
1219 * HW restart was requested.
0a79a0c0 1220 */
8b2b9fbf
AN		 1221 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1222 ieee80211_iterate_interfaces(mvm->hw, 0,
1223 iwl_mvm_cleanup_iterator, mvm);
0a79a0c0 1224
963221be
AB		 1225 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1226 * make sure there's nothing left there and warn if any is found.
1227 */
859d914c 1228 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
963221be
AB		 1229 int i;
1230
507e4cda 1231 for (i = 0; i < mvm->max_scans; i++) {
6185af2a
LC		 1232 if (WARN_ONCE(mvm->scan_uid_status[i],
1233 "UMAC scan UID %d status was not cleaned\n",
1234 i))
1235 mvm->scan_uid_status[i] = 0;
963221be
AB		 1236 }
1237 }
a0a09243 1238}
bc44886d 1239
a0a09243
LC		 1240static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1241{
1242 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1243
1244 flush_work(&mvm->d0i3_exit_work);
1245 flush_work(&mvm->async_handlers_wk);
24afba76 1246 flush_work(&mvm->add_stream_wk);
771147b0
JB		 1247
1248 /*
1249 * Lock and clear the firmware running bit here already, so that
1250 * new commands coming in elsewhere, e.g. from debugfs, will not
1251 * be able to proceed. This is important here because one of those
1252 * debugfs files causes the fw_dump_wk to be triggered, and if we
1253 * don't stop debugfs accesses before canceling that it could be
1254 * retriggered after we flush it but before we've cleared the bit.
1255 */
1256 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1257
d2709ad7 1258 cancel_delayed_work_sync(&mvm->fw_dump_wk);
d3a108a4 1259 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
69e04642 1260 cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
b6eaa45a 1261 iwl_mvm_free_fw_dump_desc(mvm);
a0a09243
LC		 1262
1263 mutex_lock(&mvm->mutex);
1264 __iwl_mvm_mac_stop(mvm);
8ca151b5
JB		 1265 mutex_unlock(&mvm->mutex);
1266
1267 /*
1268 * The worker might have been waiting for the mutex, let it run and
1269 * discover that its list is now empty.
1270 */
1271 cancel_work_sync(&mvm->async_handlers_wk);
1272}
1273
fe0f2de3
IP		 1274static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1275{
1276 u16 i;
1277
1278 lockdep_assert_held(&mvm->mutex);
1279
1280 for (i = 0; i < NUM_PHY_CTX; i++)
1281 if (!mvm->phy_ctxts[i].ref)
1282 return &mvm->phy_ctxts[i];
1283
1284 IWL_ERR(mvm, "No available PHY context\n");
1285 return NULL;
1286}
1287
d44c3fe6
AA		 1288static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1289 s16 tx_power)
1290{
1291 struct iwl_dev_tx_power_cmd cmd = {
4b87e5af
LC		 1292 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1293 .v3.mac_context_id =
d44c3fe6 1294 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
4b87e5af 1295 .v3.pwr_restriction = cpu_to_le16(8 * tx_power),
d44c3fe6 1296 };
da03f029 1297 int len = sizeof(cmd);
d44c3fe6 1298
d44c3fe6 1299 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
4b87e5af 1300 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
d44c3fe6 1301
55bfa4b9
LC		 1302 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1303 len = sizeof(cmd.v3);
da03f029
JB		 1304
1305 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
d44c3fe6
AA		 1306}
1307
8ca151b5
JB		 1308static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1309 struct ieee80211_vif *vif)
1310{
1311 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1312 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1313 int ret;
1314
aa5e1832
EG		 1315 mvmvif->mvm = mvm;
1316
d40fc489
GG		 1317 /*
1318 * make sure D0i3 exit is completed, otherwise a target access
1319 * during tx queue configuration could be done when still in
1320 * D0i3 state.
1321 */
1322 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1323 if (ret)
1324 return ret;
1325
8ca151b5
JB		 1326 /*
1327 * Not much to do here. The stack will not allow interface
1328 * types or combinations that we didn't advertise, so we
1329 * don't really have to check the types.
1330 */
1331
1332 mutex_lock(&mvm->mutex);
1333
33cef925
JB		 1334 /* make sure that beacon statistics don't go backwards with FW reset */
1335 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1336 mvmvif->beacon_stats.accu_num_beacons +=
1337 mvmvif->beacon_stats.num_beacons;
1338
e89044d7 1339 /* Allocate resources for the MAC context, and add it to the fw */
8ca151b5
JB		 1340 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1341 if (ret)
1342 goto out_unlock;
1343
1c2abf72 1344 /* Counting number of interfaces is needed for legacy PM */
ea183d02
IP		 1345 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1346 mvm->vif_count++;
ea183d02 1347
8ca151b5
JB		 1348 /*
1349 * The AP binding flow can be done only after the beacon
1350 * template is configured (which happens only in the mac80211
1351 * start_ap() flow), and adding the broadcast station can happen
1352 * only after the binding.
1353 * In addition, since modifying the MAC before adding a bcast
1354 * station is not allowed by the FW, delay the adding of MAC context to
1355 * the point where we can also add the bcast station.
1356 * In short: there's not much we can do at this point, other than
1357 * allocating resources :)
1358 */
5023d966
JB		 1359 if (vif->type == NL80211_IFTYPE_AP ||
1360 vif->type == NL80211_IFTYPE_ADHOC) {
013290aa 1361 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1362 if (ret) {
1363 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1364 goto out_release;
1365 }
1366
26d6c16b
SS		 1367 if (iwl_mvm_is_dqa_supported(mvm)) {
1368 /*
1369 * Only queue for this station is the mcast queue,
1370 * which shouldn't be in TFD mask anyway
1371 */
1372 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
ced19f26
SS		 1373 0, vif->type,
1374 IWL_STA_MULTICAST);
26d6c16b
SS		 1375 if (ret)
1376 goto out_release;
1377 }
1378
77740cb4 1379 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1380 goto out_unlock;
1381 }
1382
93190fb0
AA		 1383 mvmvif->features |= hw->netdev_features;
1384
8ca151b5
JB		 1385 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1386 if (ret)
1387 goto out_release;
1388
999609f1 1389 ret = iwl_mvm_power_update_mac(mvm);
e5e7aa8e 1390 if (ret)
fd66fc1c 1391 goto out_remove_mac;
8ca151b5 1392
7df15b1e 1393 /* beacon filtering */
a1022927 1394 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
bd3351ba
EP		 1395 if (ret)
1396 goto out_remove_mac;
1397
7df15b1e 1398 if (!mvm->bf_allowed_vif &&
73e5f2c5 1399 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
7df15b1e 1400 mvm->bf_allowed_vif = mvmvif;
a20fd398
AO		 1401 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1402 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
7df15b1e
HG		 1403 }
1404
8ca151b5
JB		 1405 /*
1406 * P2P_DEVICE interface does not have a channel context assigned to it,
1407 * so a dedicated PHY context is allocated to it and the corresponding
1408 * MAC context is bound to it at this stage.
1409 */
1410 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 1411
fe0f2de3
IP		 1412 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1413 if (!mvmvif->phy_ctxt) {
1414 ret = -ENOSPC;
bd3351ba 1415 goto out_free_bf;
fe0f2de3 1416 }
8ca151b5 1417
53a9d61e 1418 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1419 ret = iwl_mvm_binding_add_vif(mvm, vif);
1420 if (ret)
53a9d61e 1421 goto out_unref_phy;
8ca151b5 1422
013290aa 1423 ret = iwl_mvm_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1424 if (ret)
1425 goto out_unbind;
1426
1427 /* Save a pointer to p2p device vif, so it can later be used to
1428 * update the p2p device MAC when a GO is started/stopped */
1429 mvm->p2p_device_vif = vif;
1430 }
1431
63494374 1432 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1433 goto out_unlock;
1434
1435 out_unbind:
1436 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 1437 out_unref_phy:
fe0f2de3 1438 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
bd3351ba
EP		 1439 out_free_bf:
1440 if (mvm->bf_allowed_vif == mvmvif) {
1441 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1442 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1443 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
bd3351ba 1444 }
8ca151b5
JB		 1445 out_remove_mac:
1446 mvmvif->phy_ctxt = NULL;
1447 iwl_mvm_mac_ctxt_remove(mvm, vif);
1448 out_release:
5ee2b215
AB		 1449 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1450 mvm->vif_count--;
1c2abf72 1451
8ca151b5
JB		 1452 iwl_mvm_mac_ctxt_release(mvm, vif);
1453 out_unlock:
1454 mutex_unlock(&mvm->mutex);
1455
d40fc489
GG		 1456 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1457
8ca151b5
JB		 1458 return ret;
1459}
1460
38a12b5b
JB		 1461static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1462 struct ieee80211_vif *vif)
8ca151b5 1463{
d92b732e 1464 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
8ca151b5 1465
d49394a1 1466 if (tfd_msk && !iwl_mvm_is_dqa_supported(mvm)) {
fe92e32a
EG		 1467 /*
1468 * mac80211 first removes all the stations of the vif and
1469 * then removes the vif. When it removes a station it also
1470 * flushes the AMPDU session. So by now, all the AMPDU sessions
1471 * of all the stations of this vif are closed, and the queues
1472 * of these AMPDU sessions are properly closed.
1473 * We still need to take care of the shared queues of the vif.
1474 * Flush them here.
d49394a1
SS		 1475 * For DQA mode there is no need - broacast and multicast queue
1476 * are flushed separately.
fe92e32a 1477 */
8ca151b5 1478 mutex_lock(&mvm->mutex);
5888a40c 1479 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
8ca151b5 1480 mutex_unlock(&mvm->mutex);
fe92e32a
EG		 1481
1482 /*
1483 * There are transports that buffer a few frames in the host.
1484 * For these, the flush above isn't enough since while we were
1485 * flushing, the transport might have sent more frames to the
1486 * device. To solve this, wait here until the transport is
1487 * empty. Technically, this could have replaced the flush
1488 * above, but flush is much faster than draining. So flush
1489 * first, and drain to make sure we have no frames in the
1490 * transport anymore.
1491 * If a station still had frames on the shared queues, it is
1492 * already marked as draining, so to complete the draining, we
1493 * just need to wait until the transport is empty.
1494 */
a1a57877 1495 iwl_trans_wait_tx_queues_empty(mvm->trans, tfd_msk);
8ca151b5
JB		 1496 }
1497
1498 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1499 /*
1500 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1501 * We assume here that all the packets sent to the OFFCHANNEL
1502 * queue are sent in ROC session.
1503 */
1504 flush_work(&mvm->roc_done_wk);
1505 } else {
1506 /*
1507 * By now, all the AC queues are empty. The AGG queues are
1508 * empty too. We already got all the Tx responses for all the
1509 * packets in the queues. The drain work can have been
0742a75a 1510 * triggered. Flush it.
8ca151b5
JB		 1511 */
1512 flush_work(&mvm->sta_drained_wk);
1513 }
38a12b5b
JB		 1514}
1515
1516static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1517 struct ieee80211_vif *vif)
1518{
1519 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1520 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1521
1522 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 1523
1524 mutex_lock(&mvm->mutex);
1525
7df15b1e
HG		 1526 if (mvm->bf_allowed_vif == mvmvif) {
1527 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1528 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1529 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
7df15b1e
HG		 1530 }
1531
63494374
JB		 1532 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1533
8ca151b5
JB		 1534 /*
1535 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 1536 * interface is be handled as part of the stop_ap flow.
8ca151b5 1537 */
5023d966
JB		 1538 if (vif->type == NL80211_IFTYPE_AP ||
1539 vif->type == NL80211_IFTYPE_ADHOC) {
507cadf2
DS		 1540#ifdef CONFIG_NL80211_TESTMODE
1541 if (vif == mvm->noa_vif) {
1542 mvm->noa_vif = NULL;
1543 mvm->noa_duration = 0;
1544 }
1545#endif
26d6c16b 1546 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
013290aa 1547 iwl_mvm_dealloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1548 goto out_release;
1549 }
1550
1551 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1552 mvm->p2p_device_vif = NULL;
013290aa 1553 iwl_mvm_rm_bcast_sta(mvm, vif);
8ca151b5 1554 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 1555 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1556 mvmvif->phy_ctxt = NULL;
1557 }
1558
5ee2b215 1559 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5 1560 mvm->vif_count--;
1c2abf72 1561
999609f1 1562 iwl_mvm_power_update_mac(mvm);
8ca151b5
JB		 1563 iwl_mvm_mac_ctxt_remove(mvm, vif);
1564
1565out_release:
1566 iwl_mvm_mac_ctxt_release(mvm, vif);
1567 mutex_unlock(&mvm->mutex);
1568}
1569
1570static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
88f2fd73 1571{
8ca151b5
JB		 1572 return 0;
1573}
1574
e59647ea
EP		 1575struct iwl_mvm_mc_iter_data {
1576 struct iwl_mvm *mvm;
1577 int port_id;
1578};
1579
1580static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1581 struct ieee80211_vif *vif)
1582{
1583 struct iwl_mvm_mc_iter_data *data = _data;
1584 struct iwl_mvm *mvm = data->mvm;
1585 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1586 int ret, len;
1587
1588 /* if we don't have free ports, mcast frames will be dropped */
1589 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1590 return;
1591
1592 if (vif->type != NL80211_IFTYPE_STATION ||
1593 !vif->bss_conf.assoc)
1594 return;
1595
1596 cmd->port_id = data->port_id++;
1597 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1598 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1599
1c4abec0 1600 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
e59647ea
EP		 1601 if (ret)
1602 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1603}
1604
1605static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1606{
1607 struct iwl_mvm_mc_iter_data iter_data = {
1608 .mvm = mvm,
88f2fd73
MG		 1609 };
1610
e59647ea
EP		 1611 lockdep_assert_held(&mvm->mutex);
1612
1613 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1614 return;
1615
1c4abec0 1616 ieee80211_iterate_active_interfaces_atomic(
e59647ea
EP		 1617 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1618 iwl_mvm_mc_iface_iterator, &iter_data);
88f2fd73
MG		 1619}
1620
e59647ea
EP		 1621static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1622 struct netdev_hw_addr_list *mc_list)
8ca151b5 1623{
e59647ea
EP		 1624 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1625 struct iwl_mcast_filter_cmd *cmd;
1626 struct netdev_hw_addr *addr;
f3bd58f4
MS		 1627 int addr_count;
1628 bool pass_all;
e59647ea
EP		 1629 int len;
1630
f3bd58f4
MS		 1631 addr_count = netdev_hw_addr_list_count(mc_list);
1632 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1633 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1634 if (pass_all)
e59647ea 1635 addr_count = 0;
e59647ea
EP		 1636
1637 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1638 cmd = kzalloc(len, GFP_ATOMIC);
1639 if (!cmd)
1640 return 0;
1641
1642 if (pass_all) {
1643 cmd->pass_all = 1;
1644 return (u64)(unsigned long)cmd;
1645 }
1646
1647 netdev_hw_addr_list_for_each(addr, mc_list) {
1648 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1649 cmd->count, addr->addr);
1650 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1651 addr->addr, ETH_ALEN);
1652 cmd->count++;
1653 }
1654
1655 return (u64)(unsigned long)cmd;
8ca151b5
JB		 1656}
1657
1658static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1659 unsigned int changed_flags,
1660 unsigned int *total_flags,
1661 u64 multicast)
1662{
e59647ea
EP		 1663 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1664 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
8ca151b5 1665
e59647ea 1666 mutex_lock(&mvm->mutex);
51b6b9e0 1667
e59647ea
EP		 1668 /* replace previous configuration */
1669 kfree(mvm->mcast_filter_cmd);
1670 mvm->mcast_filter_cmd = cmd;
51b6b9e0 1671
e59647ea
EP		 1672 if (!cmd)
1673 goto out;
51b6b9e0 1674
e59647ea
EP		 1675 iwl_mvm_recalc_multicast(mvm);
1676out:
1677 mutex_unlock(&mvm->mutex);
1678 *total_flags = 0;
51b6b9e0
EG		 1679}
1680
effd1929
AO		 1681static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1682 struct ieee80211_vif *vif,
1683 unsigned int filter_flags,
1684 unsigned int changed_flags)
1685{
1686 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1687
1688 /* We support only filter for probe requests */
1689 if (!(changed_flags & FIF_PROBE_REQ))
1690 return;
1691
1692 /* Supported only for p2p client interfaces */
1693 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1694 !vif->p2p)
1695 return;
1696
1697 mutex_lock(&mvm->mutex);
1698 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1699 mutex_unlock(&mvm->mutex);
1700}
1701
c87163b9
EP		 1702#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1703struct iwl_bcast_iter_data {
1704 struct iwl_mvm *mvm;
1705 struct iwl_bcast_filter_cmd *cmd;
1706 u8 current_filter;
1707};
1708
1709static void
1710iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1711 const struct iwl_fw_bcast_filter *in_filter,
1712 struct iwl_fw_bcast_filter *out_filter)
1713{
1714 struct iwl_fw_bcast_filter_attr *attr;
1715 int i;
1716
1717 memcpy(out_filter, in_filter, sizeof(*out_filter));
1718
1719 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1720 attr = &out_filter->attrs[i];
1721
1722 if (!attr->mask)
1723 break;
1724
2ee8f021
EP		 1725 switch (attr->reserved1) {
1726 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1727 if (vif->bss_conf.arp_addr_cnt != 1) {
1728 attr->mask = 0;
1729 continue;
1730 }
1731
1732 attr->val = vif->bss_conf.arp_addr_list[0];
1733 break;
1734 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1735 attr->val = *(__be32 *)&vif->addr[2];
1736 break;
1737 default:
1738 break;
1739 }
1740 attr->reserved1 = 0;
c87163b9
EP		 1741 out_filter->num_attrs++;
1742 }
1743}
1744
1745static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1746 struct ieee80211_vif *vif)
1747{
1748 struct iwl_bcast_iter_data *data = _data;
1749 struct iwl_mvm *mvm = data->mvm;
1750 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1751 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1752 struct iwl_fw_bcast_mac *bcast_mac;
1753 int i;
1754
1755 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1756 return;
1757
1758 bcast_mac = &cmd->macs[mvmvif->id];
1759
e48393e8
IP		 1760 /*
1761 * enable filtering only for associated stations, but not for P2P
1762 * Clients
1763 */
1764 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1765 !vif->bss_conf.assoc)
c87163b9
EP		 1766 return;
1767
1768 bcast_mac->default_discard = 1;
1769
1770 /* copy all configured filters */
1771 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1772 /*
1773 * Make sure we don't exceed our filters limit.
1774 * if there is still a valid filter to be configured,
1775 * be on the safe side and just allow bcast for this mac.
1776 */
1777 if (WARN_ON_ONCE(data->current_filter >=
1778 ARRAY_SIZE(cmd->filters))) {
1779 bcast_mac->default_discard = 0;
1780 bcast_mac->attached_filters = 0;
1781 break;
1782 }
1783
1784 iwl_mvm_set_bcast_filter(vif,
1785 &mvm->bcast_filters[i],
1786 &cmd->filters[data->current_filter]);
1787
1788 /* skip current filter if it contains no attributes */
1789 if (!cmd->filters[data->current_filter].num_attrs)
1790 continue;
1791
1792 /* attach the filter to current mac */
1793 bcast_mac->attached_filters |=
1794 cpu_to_le16(BIT(data->current_filter));
1795
1796 data->current_filter++;
1797 }
1798}
1799
de06a59e
EP		 1800bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1801 struct iwl_bcast_filter_cmd *cmd)
c87163b9 1802{
c87163b9
EP		 1803 struct iwl_bcast_iter_data iter_data = {
1804 .mvm = mvm,
de06a59e 1805 .cmd = cmd,
c87163b9
EP		 1806 };
1807
3b8983b1
MS		 1808 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1809 return false;
1810
de06a59e
EP		 1811 memset(cmd, 0, sizeof(*cmd));
1812 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1813 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1814
1815#ifdef CONFIG_IWLWIFI_DEBUGFS
1816 /* use debugfs filters/macs if override is configured */
1817 if (mvm->dbgfs_bcast_filtering.override) {
1818 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1819 sizeof(cmd->filters));
1820 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1821 sizeof(cmd->macs));
1822 return true;
1823 }
1824#endif
c87163b9
EP		 1825
1826 /* if no filters are configured, do nothing */
1827 if (!mvm->bcast_filters)
de06a59e 1828 return false;
c87163b9
EP		 1829
1830 /* configure and attach these filters for each associated sta vif */
1831 ieee80211_iterate_active_interfaces(
1832 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1833 iwl_mvm_bcast_filter_iterator, &iter_data);
1834
de06a59e
EP		 1835 return true;
1836}
34672bb3
EP		 1837
1838static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
de06a59e
EP		 1839{
1840 struct iwl_bcast_filter_cmd cmd;
1841
1842 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1843 return 0;
1844
1845 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1846 return 0;
1847
a1022927 1848 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
c87163b9
EP		 1849 sizeof(cmd), &cmd);
1850}
1851#else
34672bb3 1852static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
c87163b9
EP		 1853{
1854 return 0;
1855}
1856#endif
1857
a07a8f37
SS		 1858static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1859 struct ieee80211_vif *vif)
1860{
1861 struct iwl_mu_group_mgmt_cmd cmd = {};
1862
1863 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1864 WLAN_MEMBERSHIP_LEN);
1865 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1866 WLAN_USER_POSITION_LEN);
1867
1868 return iwl_mvm_send_cmd_pdu(mvm,
1869 WIDE_ID(DATA_PATH_GROUP,
1870 UPDATE_MU_GROUPS_CMD),
1871 0, sizeof(cmd), &cmd);
1872}
1873
f92659a1
SS		 1874static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1875 struct ieee80211_vif *vif)
1876{
1877 if (vif->mu_mimo_owner) {
1878 struct iwl_mu_group_mgmt_notif *notif = _data;
1879
1880 /*
1881 * MU-MIMO Group Id action frame is little endian. We treat
1882 * the data received from firmware as if it came from the
1883 * action frame, so no conversion is needed.
1884 */
1885 ieee80211_update_mu_groups(vif,
1886 (u8 *)&notif->membership_status,
1887 (u8 *)&notif->user_position);
1888 }
1889}
1890
1891void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1892 struct iwl_rx_cmd_buffer *rxb)
1893{
1894 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1895 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1896
1897 ieee80211_iterate_active_interfaces_atomic(
1898 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1899 iwl_mvm_mu_mimo_iface_iterator, notif);
1900}
1901
8ca151b5
JB		 1902static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1903 struct ieee80211_vif *vif,
1904 struct ieee80211_bss_conf *bss_conf,
1905 u32 changes)
1906{
1907 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1908 int ret;
1909
6e97b0d2
IP		 1910 /*
1911 * Re-calculate the tsf id, as the master-slave relations depend on the
1912 * beacon interval, which was not known when the station interface was
1913 * added.
1914 */
1915 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1916 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1917
03098268
AE		 1918 if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1919 mvmvif->lqm_active)
1920 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1921 0, 0);
1922
3dfd3a97
JB		 1923 /*
1924 * If we're not associated yet, take the (new) BSSID before associating
1925 * so the firmware knows. If we're already associated, then use the old
1926 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1927 * branch for disassociation below.
1928 */
1929 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1930 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1931
1932 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
8ca151b5
JB		 1933 if (ret)
1934 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1935
3dfd3a97
JB		 1936 /* after sending it once, adopt mac80211 data */
1937 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1938 mvmvif->associated = bss_conf->assoc;
1939
8ca151b5
JB		 1940 if (changes & BSS_CHANGED_ASSOC) {
1941 if (bss_conf->assoc) {
33cef925
JB		 1942 /* clear statistics to get clean beacon counter */
1943 iwl_mvm_request_statistics(mvm, true);
1944 memset(&mvmvif->beacon_stats, 0,
1945 sizeof(mvmvif->beacon_stats));
1946
8ca151b5 1947 /* add quota for this interface */
7754ae79 1948 ret = iwl_mvm_update_quotas(mvm, true, NULL);
8ca151b5
JB		 1949 if (ret) {
1950 IWL_ERR(mvm, "failed to update quotas\n");
1951 return;
1952 }
016d27e1
JB		 1953
1954 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1955 &mvm->status)) {
1956 /*
1957 * If we're restarting then the firmware will
1958 * obviously have lost synchronisation with
1959 * the AP. It will attempt to synchronise by
1960 * itself, but we can make it more reliable by
1961 * scheduling a session protection time event.
1962 *
1963 * The firmware needs to receive a beacon to
1964 * catch up with synchronisation, use 110% of
1965 * the beacon interval.
1966 *
1967 * Set a large maximum delay to allow for more
1968 * than a single interface.
1969 */
1970 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1971 iwl_mvm_protect_session(mvm, vif, dur, dur,
d20d37bc 1972 5 * dur, false);
016d27e1 1973 }
1f3b0ff8
LE		 1974
1975 iwl_mvm_sf_update(mvm, vif, false);
175a70b7 1976 iwl_mvm_power_vif_assoc(mvm, vif);
697162a1 1977 if (vif->p2p) {
29a90a49 1978 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
697162a1
EG		 1979 iwl_mvm_update_smps(mvm, vif,
1980 IWL_MVM_SMPS_REQ_PROT,
1981 IEEE80211_SMPS_DYNAMIC);
1982 }
0ae98812 1983 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
1f3b0ff8
LE		 1984 /*
1985 * If update fails - SF might be running in associated
1986 * mode while disassociated - which is forbidden.
1987 */
1988 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1989 "Failed to update SF upon disassociation\n");
1990
8ca151b5
JB		 1991 /* remove AP station now that the MAC is unassoc */
1992 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1993 if (ret)
1994 IWL_ERR(mvm, "failed to remove AP station\n");
37577fe2
EP		 1995
1996 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
0ae98812
SS		 1997 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1998 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
8ca151b5 1999 /* remove quota for this interface */
7754ae79 2000 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5
JB		 2001 if (ret)
2002 IWL_ERR(mvm, "failed to update quotas\n");
29a90a49
EP		 2003
2004 if (vif->p2p)
2005 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
3dfd3a97
JB		 2006
2007 /* this will take the cleared BSSID from bss_conf */
2008 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2009 if (ret)
2010 IWL_ERR(mvm,
2011 "failed to update MAC %pM (clear after unassoc)\n",
2012 vif->addr);
8ca151b5 2013 }
a20fd398 2014
a07a8f37
SS		 2015 /*
2016 * The firmware tracks the MU-MIMO group on its own.
f92659a1 2017 * However, on HW restart we should restore this data.
a07a8f37
SS		 2018 */
2019 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
f92659a1 2020 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
a07a8f37
SS		 2021 ret = iwl_mvm_update_mu_groups(mvm, vif);
2022 if (ret)
2023 IWL_ERR(mvm,
2024 "failed to update VHT MU_MIMO groups\n");
2025 }
2026
e59647ea 2027 iwl_mvm_recalc_multicast(mvm);
34672bb3 2028 iwl_mvm_configure_bcast_filter(mvm);
e59647ea 2029
a20fd398
AO		 2030 /* reset rssi values */
2031 mvmvif->bf_data.ave_beacon_signal = 0;
2032
8e484f0b 2033 iwl_mvm_bt_coex_vif_change(mvm);
f94045ed
EG		 2034 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2035 IEEE80211_SMPS_AUTOMATIC);
355346ba
AS		 2036 if (fw_has_capa(&mvm->fw->ucode_capa,
2037 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2038 iwl_mvm_config_scan(mvm);
b45242c9
AS		 2039 }
2040
2041 if (changes & BSS_CHANGED_BEACON_INFO) {
210a544e 2042 /*
b45242c9 2043 * We received a beacon from the associated AP so
210a544e
JB		 2044 * remove the session protection.
2045 */
2046 iwl_mvm_remove_time_event(mvm, mvmvif,
2047 &mvmvif->time_event_data);
cc87d322 2048
cc87d322
EH		 2049 iwl_mvm_sf_update(mvm, vif, false);
2050 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2051 }
2052
283115fb
AA		 2053 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2054 /*
2055 * Send power command on every beacon change,
2056 * because we may have not enabled beacon abort yet.
2057 */
2058 BSS_CHANGED_BEACON_INFO)) {
1bc10d3b
JB		 2059 ret = iwl_mvm_power_update_mac(mvm);
2060 if (ret)
2061 IWL_ERR(mvm, "failed to update power mode\n");
2062 }
2063
88f2fd73
MG		 2064 if (changes & BSS_CHANGED_TXPOWER) {
2065 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2066 bss_conf->txpower);
2067 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2068 }
a20fd398
AO		 2069
2070 if (changes & BSS_CHANGED_CQM) {
3c6acb61 2071 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
a20fd398
AO		 2072 /* reset cqm events tracking */
2073 mvmvif->bf_data.last_cqm_event = 0;
fa7b2e7f
AA		 2074 if (mvmvif->bf_data.bf_enabled) {
2075 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2076 if (ret)
2077 IWL_ERR(mvm,
2078 "failed to update CQM thresholds\n");
2079 }
a20fd398 2080 }
2ee8f021
EP		 2081
2082 if (changes & BSS_CHANGED_ARP_FILTER) {
3c6acb61 2083 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
34672bb3 2084 iwl_mvm_configure_bcast_filter(mvm);
2ee8f021 2085 }
8ca151b5
JB		 2086}
2087
5023d966
JB		 2088static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2089 struct ieee80211_vif *vif)
8ca151b5
JB		 2090{
2091 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2092 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2093 int ret;
2094
576eeee9
EP		 2095 /*
2096 * iwl_mvm_mac_ctxt_add() might read directly from the device
2097 * (the system time), so make sure it is available.
2098 */
2099 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2100 if (ret)
2101 return ret;
2102
8ca151b5
JB		 2103 mutex_lock(&mvm->mutex);
2104
2105 /* Send the beacon template */
2106 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2107 if (ret)
2108 goto out_unlock;
2109
6e97b0d2
IP		 2110 /*
2111 * Re-calculate the tsf id, as the master-slave relations depend on the
2112 * beacon interval, which was not known when the AP interface was added.
2113 */
2114 if (vif->type == NL80211_IFTYPE_AP)
2115 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2116
94939080
GG		 2117 mvmvif->ap_assoc_sta_count = 0;
2118
8ca151b5
JB		 2119 /* Add the mac context */
2120 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2121 if (ret)
2122 goto out_unlock;
2123
2124 /* Perform the binding */
2125 ret = iwl_mvm_binding_add_vif(mvm, vif);
2126 if (ret)
2127 goto out_remove;
2128
ced19f26 2129 ret = iwl_mvm_add_mcast_sta(mvm, vif);
8ca151b5
JB		 2130 if (ret)
2131 goto out_unbind;
2132
ced19f26
SS		 2133 /* Send the bcast station. At this stage the TBTT and DTIM time events
2134 * are added and applied to the scheduler */
2135 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
26d6c16b 2136 if (ret)
ced19f26 2137 goto out_rm_mcast;
26d6c16b 2138
5691e218
IP		 2139 /* must be set before quota calculations */
2140 mvmvif->ap_ibss_active = true;
2141
a11e144e 2142 /* power updated needs to be done before quotas */
999609f1 2143 iwl_mvm_power_update_mac(mvm);
a11e144e 2144
7754ae79 2145 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5 2146 if (ret)
a11e144e 2147 goto out_quota_failed;
8ca151b5 2148
5023d966 2149 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 2150 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 2151 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 2152
29a90a49
EP		 2153 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2154
8e484f0b 2155 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 2156
f697267f
AN		 2157 /* we don't support TDLS during DCM */
2158 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2159 iwl_mvm_teardown_tdls_peers(mvm);
2160
939e4904 2161 goto out_unlock;
8ca151b5 2162
a11e144e 2163out_quota_failed:
999609f1 2164 iwl_mvm_power_update_mac(mvm);
5691e218 2165 mvmvif->ap_ibss_active = false;
013290aa 2166 iwl_mvm_send_rm_bcast_sta(mvm, vif);
ced19f26
SS		 2167out_rm_mcast:
2168 iwl_mvm_rm_mcast_sta(mvm, vif);
8ca151b5
JB		 2169out_unbind:
2170 iwl_mvm_binding_remove_vif(mvm, vif);
2171out_remove:
2172 iwl_mvm_mac_ctxt_remove(mvm, vif);
2173out_unlock:
2174 mutex_unlock(&mvm->mutex);
576eeee9 2175 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
8ca151b5
JB		 2176 return ret;
2177}
2178
5023d966
JB		 2179static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2180 struct ieee80211_vif *vif)
8ca151b5
JB		 2181{
2182 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2183 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2184
38a12b5b
JB		 2185 iwl_mvm_prepare_mac_removal(mvm, vif);
2186
8ca151b5
JB		 2187 mutex_lock(&mvm->mutex);
2188
664322fa 2189 /* Handle AP stop while in CSA */
7f0a7c67
AO		 2190 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2191 iwl_mvm_remove_time_event(mvm, mvmvif,
2192 &mvmvif->time_event_data);
664322fa 2193 RCU_INIT_POINTER(mvm->csa_vif, NULL);
e9cb0327 2194 mvmvif->csa_countdown = false;
7f0a7c67 2195 }
664322fa 2196
003e5236
AO		 2197 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2198 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2199 mvm->csa_tx_block_bcn_timeout = 0;
2200 }
2201
5023d966 2202 mvmvif->ap_ibss_active = false;
1c87bbad 2203 mvm->ap_last_beacon_gp2 = 0;
8ca151b5 2204
8e484f0b 2205 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 2206
29a90a49
EP		 2207 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2208
5023d966 2209 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 2210 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 2211 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 2212
7754ae79 2213 iwl_mvm_update_quotas(mvm, false, NULL);
ced19f26
SS		 2214
2215 /*
2216 * This is not very nice, but the simplest:
2217 * For older FWs removing the mcast sta before the bcast station may
2218 * cause assert 0x2b00.
2219 * This is fixed in later FW (which will stop beaconing when removing
2220 * bcast station).
2221 * So make the order of removal depend on the TLV
2222 */
2223 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2224 iwl_mvm_rm_mcast_sta(mvm, vif);
013290aa 2225 iwl_mvm_send_rm_bcast_sta(mvm, vif);
ced19f26
SS		 2226 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2227 iwl_mvm_rm_mcast_sta(mvm, vif);
8ca151b5 2228 iwl_mvm_binding_remove_vif(mvm, vif);
a11e144e 2229
999609f1 2230 iwl_mvm_power_update_mac(mvm);
a11e144e 2231
8ca151b5
JB		 2232 iwl_mvm_mac_ctxt_remove(mvm, vif);
2233
2234 mutex_unlock(&mvm->mutex);
2235}
2236
5023d966
JB		 2237static void
2238iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2239 struct ieee80211_vif *vif,
2240 struct ieee80211_bss_conf *bss_conf,
2241 u32 changes)
8ca151b5 2242{
be2056fc 2243 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8a5e3660 2244
be2056fc
IP		 2245 /* Changes will be applied when the AP/IBSS is started */
2246 if (!mvmvif->ap_ibss_active)
2247 return;
2248
863230da 2249 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
f7d8b702 2250 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
3dfd3a97 2251 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
863230da 2252 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
8a5e3660 2253
8ca151b5 2254 /* Need to send a new beacon template to the FW */
863230da
JB		 2255 if (changes & BSS_CHANGED_BEACON &&
2256 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2257 IWL_WARN(mvm, "Failed updating beacon data\n");
79b7a69d
HD		 2258
2259 if (changes & BSS_CHANGED_TXPOWER) {
2260 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2261 bss_conf->txpower);
2262 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2263 }
8ca151b5
JB		 2264}
2265
2266static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2267 struct ieee80211_vif *vif,
2268 struct ieee80211_bss_conf *bss_conf,
2269 u32 changes)
2270{
2271 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2272
576eeee9
EP		 2273 /*
2274 * iwl_mvm_bss_info_changed_station() might call
2275 * iwl_mvm_protect_session(), which reads directly from
2276 * the device (the system time), so make sure it is available.
2277 */
2278 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2279 return;
2280
8ca151b5
JB		 2281 mutex_lock(&mvm->mutex);
2282
723f02ed 2283 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
c7d42480 2284 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
723f02ed 2285
8ca151b5
JB		 2286 switch (vif->type) {
2287 case NL80211_IFTYPE_STATION:
2288 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2289 break;
2290 case NL80211_IFTYPE_AP:
5023d966
JB		 2291 case NL80211_IFTYPE_ADHOC:
2292 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
8ca151b5 2293 break;
91b08c2d
AE		 2294 case NL80211_IFTYPE_MONITOR:
2295 if (changes & BSS_CHANGED_MU_GROUPS)
2296 iwl_mvm_update_mu_groups(mvm, vif);
2297 break;
8ca151b5
JB		 2298 default:
2299 /* shouldn't happen */
2300 WARN_ON_ONCE(1);
2301 }
2302
2303 mutex_unlock(&mvm->mutex);
576eeee9 2304 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
8ca151b5
JB		 2305}
2306
2307static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2308 struct ieee80211_vif *vif,
c56ef672 2309 struct ieee80211_scan_request *hw_req)
8ca151b5
JB		 2310{
2311 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2312 int ret;
2313
6749dd80
LC		 2314 if (hw_req->req.n_channels == 0 ||
2315 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
8ca151b5
JB		 2316 return -EINVAL;
2317
2318 mutex_lock(&mvm->mutex);
6749dd80 2319 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
8ca151b5 2320 mutex_unlock(&mvm->mutex);
6749dd80 2321
8ca151b5
JB		 2322 return ret;
2323}
2324
2325static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2326 struct ieee80211_vif *vif)
2327{
2328 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2329
2330 mutex_lock(&mvm->mutex);
2331
e7d3abab
LC		 2332 /* Due to a race condition, it's possible that mac80211 asks
2333 * us to stop a hw_scan when it's already stopped. This can
2334 * happen, for instance, if we stopped the scan ourselves,
2335 * called ieee80211_scan_completed() and the userspace called
2336 * cancel scan scan before ieee80211_scan_work() could run.
2337 * To handle that, simply return if the scan is not running.
2338 */
262888fc 2339 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
c7d42480 2340 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
8ca151b5
JB		 2341
2342 mutex_unlock(&mvm->mutex);
2343}
2344
2345static void
2346iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
3e56eadf 2347 struct ieee80211_sta *sta, u16 tids,
8ca151b5
JB		 2348 int num_frames,
2349 enum ieee80211_frame_release_type reason,
2350 bool more_data)
2351{
2352 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5 2353
3e56eadf 2354 /* Called when we need to transmit (a) frame(s) from mac80211 */
8ca151b5 2355
3e56eadf
JB		 2356 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2357 tids, more_data, false);
2358}
2359
2360static void
2361iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2362 struct ieee80211_sta *sta, u16 tids,
2363 int num_frames,
2364 enum ieee80211_frame_release_type reason,
2365 bool more_data)
2366{
2367 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2368
9a3fcf91 2369 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
3e56eadf
JB		 2370
2371 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2372 tids, more_data, true);
8ca151b5
JB		 2373}
2374
65e25482
JB		 2375static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2376 enum sta_notify_cmd cmd,
2377 struct ieee80211_sta *sta)
8ca151b5
JB		 2378{
2379 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5b577a90 2380 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
c22b0ff5 2381 unsigned long txqs = 0, tids = 0;
3e56eadf 2382 int tid;
8ca151b5 2383
c22b0ff5
EG		 2384 spin_lock_bh(&mvmsta->lock);
2385 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2386 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2387
9a3fcf91
SS		 2388 if (!iwl_mvm_is_dqa_supported(mvm) &&
2389 tid_data->state != IWL_AGG_ON &&
c22b0ff5
EG		 2390 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2391 continue;
2392
6862fcee 2393 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
1c17627b
SS		 2394 continue;
2395
c22b0ff5
EG		 2396 __set_bit(tid_data->txq_id, &txqs);
2397
2398 if (iwl_mvm_tid_queued(tid_data) == 0)
2399 continue;
2400
2401 __set_bit(tid, &tids);
2402 }
2403
8ca151b5
JB		 2404 switch (cmd) {
2405 case STA_NOTIFY_SLEEP:
e3d4bc8c 2406 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5 2407 ieee80211_sta_block_awake(hw, sta, true);
3e56eadf 2408
c22b0ff5 2409 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
3e56eadf 2410 ieee80211_sta_set_buffered(sta, tid, true);
c22b0ff5
EG		 2411
2412 if (txqs)
2413 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
8ca151b5
JB		 2414 /*
2415 * The fw updates the STA to be asleep. Tx packets on the Tx
2416 * queues to this station will not be transmitted. The fw will
2417 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2418 */
2419 break;
2420 case STA_NOTIFY_AWAKE:
0ae98812 2421 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
8ca151b5 2422 break;
c22b0ff5
EG		 2423
2424 if (txqs)
2425 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
9cc40712 2426 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 2427 break;
2428 default:
2429 break;
2430 }
c22b0ff5 2431 spin_unlock_bh(&mvmsta->lock);
8ca151b5
JB		 2432}
2433
65e25482
JB		 2434static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2435 struct ieee80211_vif *vif,
2436 enum sta_notify_cmd cmd,
2437 struct ieee80211_sta *sta)
2438{
2439 __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2440}
2441
2442void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2443{
2444 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2445 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2446 struct ieee80211_sta *sta;
2447 struct iwl_mvm_sta *mvmsta;
2448 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2449
2450 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2451 return;
2452
2453 rcu_read_lock();
a9560029 2454 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
65e25482
JB		 2455 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2456 rcu_read_unlock();
2457 return;
2458 }
2459
2460 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2461
2462 if (!mvmsta->vif ||
2463 mvmsta->vif->type != NL80211_IFTYPE_AP) {
2464 rcu_read_unlock();
2465 return;
2466 }
2467
2468 if (mvmsta->sleeping != sleeping) {
2469 mvmsta->sleeping = sleeping;
2470 __iwl_mvm_mac_sta_notify(mvm->hw,
2471 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2472 sta);
2473 ieee80211_sta_ps_transition(sta, sleeping);
2474 }
2475
2476 if (sleeping) {
2477 switch (notif->type) {
2478 case IWL_MVM_PM_EVENT_AWAKE:
2479 case IWL_MVM_PM_EVENT_ASLEEP:
2480 break;
2481 case IWL_MVM_PM_EVENT_UAPSD:
2482 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2483 break;
2484 case IWL_MVM_PM_EVENT_PS_POLL:
2485 ieee80211_sta_pspoll(sta);
2486 break;
2487 default:
2488 break;
2489 }
2490 }
2491
2492 rcu_read_unlock();
2493}
2494
1ddbbb0c
JB		 2495static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2496 struct ieee80211_vif *vif,
2497 struct ieee80211_sta *sta)
2498{
2499 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
9d8ce6af 2500 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1ddbbb0c
JB		 2501
2502 /*
2503 * This is called before mac80211 does RCU synchronisation,
2504 * so here we already invalidate our internal RCU-protected
2505 * station pointer. The rest of the code will thus no longer
2506 * be able to find the station this way, and we don't rely
2507 * on further RCU synchronisation after the sta_state()
2508 * callback deleted the station.
2509 */
2510 mutex_lock(&mvm->mutex);
2511 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2512 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2513 ERR_PTR(-ENOENT));
94939080 2514
1ddbbb0c
JB		 2515 mutex_unlock(&mvm->mutex);
2516}
2517
bd1ba664
JB		 2518static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2519 const u8 *bssid)
2520{
2521 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2522 return;
2523
c5241b0c 2524 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
cee5a882
AA		 2525 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2526 return;
2527 }
2528
11dee0b4
EG		 2529 if (!vif->p2p &&
2530 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
bd1ba664
JB		 2531 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2532 return;
2533 }
2534
2535 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2536}
2537
1e8f1329
GBA		 2538static void
2539iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2540 struct ieee80211_vif *vif, u8 *peer_addr,
2541 enum nl80211_tdls_operation action)
2542{
2543 struct iwl_fw_dbg_trigger_tlv *trig;
2544 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2545
2546 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2547 return;
2548
2549 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2550 tdls_trig = (void *)trig->data;
2551 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2552 return;
2553
2554 if (!(tdls_trig->action_bitmap & BIT(action)))
2555 return;
2556
2557 if (tdls_trig->peer_mode &&
2558 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2559 return;
2560
2561 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2562 "TDLS event occurred, peer %pM, action %d",
2563 peer_addr, action);
2564}
2565
24afba76
LK		 2566static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2567 struct iwl_mvm_sta *mvm_sta)
2568{
2569 struct iwl_mvm_tid_data *tid_data;
2570 struct sk_buff *skb;
2571 int i;
2572
2573 spin_lock_bh(&mvm_sta->lock);
2574 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2575 tid_data = &mvm_sta->tid_data[i];
2576 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames)))
2577 ieee80211_free_txskb(mvm->hw, skb);
2578 }
2579 spin_unlock_bh(&mvm_sta->lock);
2580}
2581
8ca151b5
JB		 2582static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2583 struct ieee80211_vif *vif,
2584 struct ieee80211_sta *sta,
2585 enum ieee80211_sta_state old_state,
2586 enum ieee80211_sta_state new_state)
2587{
2588 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2589 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
6ea29ce5 2590 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 2591 int ret;
2592
2593 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2594 sta->addr, old_state, new_state);
2595
2596 /* this would be a mac80211 bug ... but don't crash */
2597 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2598 return -EINVAL;
2599
2600 /* if a STA is being removed, reuse its ID */
2601 flush_work(&mvm->sta_drained_wk);
2602
24afba76
LK		 2603 /*
2604 * If we are in a STA removal flow and in DQA mode:
2605 *
2606 * This is after the sync_rcu part, so the queues have already been
2607 * flushed. No more TXs on their way in mac80211's path, and no more in
2608 * the queues.
2609 * Also, we won't be getting any new TX frames for this station.
2610 * What we might have are deferred TX frames that need to be taken care
2611 * of.
2612 *
2613 * Drop any still-queued deferred-frame before removing the STA, and
2614 * make sure the worker is no longer handling frames for this STA.
2615 */
2616 if (old_state == IEEE80211_STA_NONE &&
2617 new_state == IEEE80211_STA_NOTEXIST &&
2618 iwl_mvm_is_dqa_supported(mvm)) {
24afba76
LK		 2619 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2620 flush_work(&mvm->add_stream_wk);
2621
2622 /*
2623 * No need to make sure deferred TX indication is off since the
2624 * worker will already remove it if it was on
2625 */
2626 }
2627
8ca151b5 2628 mutex_lock(&mvm->mutex);
6ea29ce5
JB		 2629 /* track whether or not the station is associated */
2630 mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC;
2631
8ca151b5
JB		 2632 if (old_state == IEEE80211_STA_NOTEXIST &&
2633 new_state == IEEE80211_STA_NONE) {
48bc1307
JB		 2634 /*
2635 * Firmware bug - it'll crash if the beacon interval is less
2636 * than 16. We can't avoid connecting at all, so refuse the
2637 * station state change, this will cause mac80211 to abandon
2638 * attempts to connect to this AP, and eventually wpa_s will
2639 * blacklist the AP...
2640 */
2641 if (vif->type == NL80211_IFTYPE_STATION &&
2642 vif->bss_conf.beacon_int < 16) {
2643 IWL_ERR(mvm,
2644 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2645 sta->addr, vif->bss_conf.beacon_int);
2646 ret = -EINVAL;
2647 goto out_unlock;
2648 }
cf7b491d
AN		 2649
2650 if (sta->tdls &&
2651 (vif->p2p ||
fa3d07e4
AN		 2652 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2653 IWL_MVM_TDLS_STA_COUNT ||
cf7b491d
AN		 2654 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2655 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2656 ret = -EBUSY;
2657 goto out_unlock;
2658 }
2659
8ca151b5 2660 ret = iwl_mvm_add_sta(mvm, vif, sta);
1e8f1329 2661 if (sta->tdls && ret == 0) {
fa3d07e4 2662 iwl_mvm_recalc_tdls_state(mvm, vif, true);
1e8f1329
GBA		 2663 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2664 NL80211_TDLS_SETUP);
2665 }
8ca151b5
JB		 2666 } else if (old_state == IEEE80211_STA_NONE &&
2667 new_state == IEEE80211_STA_AUTH) {
e820c2da
HD		 2668 /*
2669 * EBS may be disabled due to previous failures reported by FW.
2670 * Reset EBS status here assuming environment has been changed.
2671 */
2672 mvm->last_ebs_successful = true;
bd1ba664 2673 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
8ca151b5
JB		 2674 ret = 0;
2675 } else if (old_state == IEEE80211_STA_AUTH &&
2676 new_state == IEEE80211_STA_ASSOC) {
8be30c13
AB		 2677 if (vif->type == NL80211_IFTYPE_AP) {
2678 mvmvif->ap_assoc_sta_count++;
2679 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2680 }
735a0045
GM		 2681
2682 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2683 true);
7a453973 2684 ret = iwl_mvm_update_sta(mvm, vif, sta);
8ca151b5
JB		 2685 } else if (old_state == IEEE80211_STA_ASSOC &&
2686 new_state == IEEE80211_STA_AUTHORIZED) {
f59e0e3c
AN		 2687
2688 /* we don't support TDLS during DCM */
2689 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2690 iwl_mvm_teardown_tdls_peers(mvm);
2691
1e8f1329
GBA		 2692 if (sta->tdls)
2693 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2694 NL80211_TDLS_ENABLE_LINK);
2695
7df15b1e 2696 /* enable beacon filtering */
fa7b2e7f 2697 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2698 ret = 0;
2699 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2700 new_state == IEEE80211_STA_ASSOC) {
7df15b1e 2701 /* disable beacon filtering */
a1022927 2702 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2703 ret = 0;
2704 } else if (old_state == IEEE80211_STA_ASSOC &&
2705 new_state == IEEE80211_STA_AUTH) {
8be30c13
AB		 2706 if (vif->type == NL80211_IFTYPE_AP) {
2707 mvmvif->ap_assoc_sta_count--;
2708 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2709 }
8ca151b5
JB		 2710 ret = 0;
2711 } else if (old_state == IEEE80211_STA_AUTH &&
2712 new_state == IEEE80211_STA_NONE) {
2713 ret = 0;
2714 } else if (old_state == IEEE80211_STA_NONE &&
2715 new_state == IEEE80211_STA_NOTEXIST) {
2716 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1e8f1329 2717 if (sta->tdls) {
fa3d07e4 2718 iwl_mvm_recalc_tdls_state(mvm, vif, false);
1e8f1329
GBA		 2719 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2720 NL80211_TDLS_DISABLE_LINK);
2721 }
8ca151b5
JB		 2722 } else {
2723 ret = -EIO;
2724 }
48bc1307 2725 out_unlock:
8ca151b5
JB		 2726 mutex_unlock(&mvm->mutex);
2727
9c126cd6
LK		 2728 if (sta->tdls && ret == 0) {
2729 if (old_state == IEEE80211_STA_NOTEXIST &&
2730 new_state == IEEE80211_STA_NONE)
2731 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2732 else if (old_state == IEEE80211_STA_NONE &&
2733 new_state == IEEE80211_STA_NOTEXIST)
2734 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2735 }
2736
8ca151b5
JB		 2737 return ret;
2738}
2739
2740static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2741{
2742 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2743
2744 mvm->rts_threshold = value;
2745
2746 return 0;
2747}
2748
1f3b0ff8
LE		 2749static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2750 struct ieee80211_vif *vif,
2751 struct ieee80211_sta *sta, u32 changed)
2752{
2753 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2754
2755 if (vif->type == NL80211_IFTYPE_STATION &&
2756 changed & IEEE80211_RC_NSS_CHANGED)
2757 iwl_mvm_sf_update(mvm, vif, false);
2758}
2759
8ca151b5
JB		 2760static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2761 struct ieee80211_vif *vif, u16 ac,
2762 const struct ieee80211_tx_queue_params *params)
2763{
2764 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2765 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2766
2767 mvmvif->queue_params[ac] = *params;
2768
2769 /*
2770 * No need to update right away, we'll get BSS_CHANGED_QOS
2771 * The exception is P2P_DEVICE interface which needs immediate update.
2772 */
2773 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2774 int ret;
2775
2776 mutex_lock(&mvm->mutex);
3dfd3a97 2777 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
8ca151b5
JB		 2778 mutex_unlock(&mvm->mutex);
2779 return ret;
2780 }
2781 return 0;
2782}
2783
2784static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2785 struct ieee80211_vif *vif)
2786{
2787 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
7c70fee5
SS		 2788 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2789 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
8ca151b5
JB		 2790
2791 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2792 return;
2793
576eeee9
EP		 2794 /*
2795 * iwl_mvm_protect_session() reads directly from the device
2796 * (the system time), so make sure it is available.
2797 */
2798 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2799 return;
2800
8ca151b5
JB		 2801 mutex_lock(&mvm->mutex);
2802 /* Try really hard to protect the session and hear a beacon */
d20d37bc 2803 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
8ca151b5 2804 mutex_unlock(&mvm->mutex);
576eeee9
EP		 2805
2806 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
8ca151b5
JB		 2807}
2808
35a000b7
DS		 2809static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2810 struct ieee80211_vif *vif,
2811 struct cfg80211_sched_scan_request *req,
633e2713 2812 struct ieee80211_scan_ies *ies)
35a000b7
DS		 2813{
2814 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
35a000b7 2815
35a000b7 2816 int ret;
4660dfbb 2817
35a000b7
DS		 2818 mutex_lock(&mvm->mutex);
2819
1f940386 2820 if (!vif->bss_conf.idle) {
bd5e4744
DS		 2821 ret = -EBUSY;
2822 goto out;
2823 }
2824
19945dfb 2825 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
d2496221 2826
35a000b7
DS		 2827out:
2828 mutex_unlock(&mvm->mutex);
2829 return ret;
2830}
2831
37e3308c
JB		 2832static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2833 struct ieee80211_vif *vif)
35a000b7
DS		 2834{
2835 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
33ea27f6 2836 int ret;
35a000b7
DS		 2837
2838 mutex_lock(&mvm->mutex);
e7d3abab
LC		 2839
2840 /* Due to a race condition, it's possible that mac80211 asks
2841 * us to stop a sched_scan when it's already stopped. This
2842 * can happen, for instance, if we stopped the scan ourselves,
2843 * called ieee80211_sched_scan_stopped() and the userspace called
2844 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2845 * could run. To handle this, simply return if the scan is
2846 * not running.
2847 */
262888fc 2848 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
e7d3abab
LC		 2849 mutex_unlock(&mvm->mutex);
2850 return 0;
2851 }
2852
c7d42480 2853 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
35a000b7 2854 mutex_unlock(&mvm->mutex);
33ea27f6 2855 iwl_mvm_wait_for_async_handlers(mvm);
37e3308c 2856
33ea27f6 2857 return ret;
35a000b7
DS		 2858}
2859
8ca151b5
JB		 2860static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2861 enum set_key_cmd cmd,
2862 struct ieee80211_vif *vif,
2863 struct ieee80211_sta *sta,
2864 struct ieee80211_key_conf *key)
2865{
2866 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
f5e28eac
JB		 2867 struct iwl_mvm_sta *mvmsta;
2868 struct iwl_mvm_key_pn *ptk_pn;
2869 int keyidx = key->keyidx;
8ca151b5 2870 int ret;
d6ee54a9 2871 u8 key_offset;
8ca151b5
JB		 2872
2873 if (iwlwifi_mod_params.sw_crypto) {
2874 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2875 return -EOPNOTSUPP;
2876 }
2877
2878 switch (key->cipher) {
2879 case WLAN_CIPHER_SUITE_TKIP:
2880 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1ad4f639 2881 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
8ca151b5 2882 break;
ca8c0f4b 2883 case WLAN_CIPHER_SUITE_CCMP:
2a53d166
AB		 2884 case WLAN_CIPHER_SUITE_GCMP:
2885 case WLAN_CIPHER_SUITE_GCMP_256:
85aeb58c
DS		 2886 if (!iwl_mvm_has_new_tx_api(mvm))
2887 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
ca8c0f4b 2888 break;
8ca151b5 2889 case WLAN_CIPHER_SUITE_AES_CMAC:
8e160ab8
AB		 2890 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2891 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
30686bf7 2892 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
8ca151b5
JB		 2893 break;
2894 case WLAN_CIPHER_SUITE_WEP40:
2895 case WLAN_CIPHER_SUITE_WEP104:
ba3943b0
JB		 2896 /* For non-client mode, only use WEP keys for TX as we probably
2897 * don't have a station yet anyway and would then have to keep
2898 * track of the keys, linking them to each of the clients/peers
2899 * as they appear. For now, don't do that, for performance WEP
2900 * offload doesn't really matter much, but we need it for some
2901 * other offload features in client mode.
8ca151b5 2902 */
ba3943b0
JB		 2903 if (vif->type != NL80211_IFTYPE_STATION)
2904 return 0;
2905 break;
8ca151b5 2906 default:
e36e5433
MS		 2907 /* currently FW supports only one optional cipher scheme */
2908 if (hw->n_cipher_schemes &&
2909 hw->cipher_schemes->cipher == key->cipher)
2910 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2911 else
2912 return -EOPNOTSUPP;
8ca151b5
JB		 2913 }
2914
2915 mutex_lock(&mvm->mutex);
2916
2917 switch (cmd) {
2918 case SET_KEY:
5023d966
JB		 2919 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2920 vif->type == NL80211_IFTYPE_AP) && !sta) {
2921 /*
2922 * GTK on AP interface is a TX-only key, return 0;
2923 * on IBSS they're per-station and because we're lazy
2924 * we don't support them for RX, so do the same.
8e160ab8 2925 * CMAC/GMAC in AP/IBSS modes must be done in software.
5023d966 2926 */
8e160ab8
AB		 2927 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2928 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2929 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
81279c49
JB		 2930 ret = -EOPNOTSUPP;
2931 else
2932 ret = 0;
85aeb58c
DS		 2933
2934 if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
2935 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
2936 !iwl_mvm_has_new_tx_api(mvm)) {
2937 key->hw_key_idx = STA_KEY_IDX_INVALID;
2938 break;
2939 }
6caffd4f
JB		 2940 }
2941
b546dcd6
JB		 2942 /* During FW restart, in order to restore the state as it was,
2943 * don't try to reprogram keys we previously failed for.
2944 */
2945 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2946 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2947 IWL_DEBUG_MAC80211(mvm,
2948 "skip invalid idx key programming during restart\n");
2949 ret = 0;
2950 break;
2951 }
2952
f5e28eac
JB		 2953 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2954 sta && iwl_mvm_has_new_rx_api(mvm) &&
2955 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2956 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2a53d166
AB		 2957 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2958 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
f5e28eac
JB		 2959 struct ieee80211_key_seq seq;
2960 int tid, q;
2961
2962 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2963 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2964 ptk_pn = kzalloc(sizeof(*ptk_pn) +
2965 mvm->trans->num_rx_queues *
2966 sizeof(ptk_pn->q[0]),
2967 GFP_KERNEL);
2968 if (!ptk_pn) {
2969 ret = -ENOMEM;
2970 break;
2971 }
2972
2973 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2974 ieee80211_get_key_rx_seq(key, tid, &seq);
2975 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2976 memcpy(ptk_pn->q[q].pn[tid],
2977 seq.ccmp.pn,
2978 IEEE80211_CCMP_PN_LEN);
2979 }
2980
2981 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2982 }
2983
d6ee54a9
LC		 2984 /* in HW restart reuse the index, otherwise request a new one */
2985 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2986 key_offset = key->hw_key_idx;
2987 else
2988 key_offset = STA_KEY_IDX_INVALID;
2989
8ca151b5 2990 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
d6ee54a9 2991 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
8ca151b5
JB		 2992 if (ret) {
2993 IWL_WARN(mvm, "set key failed\n");
2994 /*
2995 * can't add key for RX, but we don't need it
2996 * in the device for TX so still return 0
2997 */
6caffd4f 2998 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 2999 ret = 0;
3000 }
3001
3002 break;
3003 case DISABLE_KEY:
6caffd4f
JB		 3004 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3005 ret = 0;
3006 break;
3007 }
3008
f5e28eac
JB		 3009 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
3010 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3011 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2a53d166
AB		 3012 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3013 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
f5e28eac
JB		 3014 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3015 ptk_pn = rcu_dereference_protected(
3016 mvmsta->ptk_pn[keyidx],
3017 lockdep_is_held(&mvm->mutex));
3018 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3019 if (ptk_pn)
3020 kfree_rcu(ptk_pn, rcu_head);
3021 }
3022
8ca151b5
JB		 3023 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3024 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3025 break;
3026 default:
3027 ret = -EINVAL;
3028 }
3029
3030 mutex_unlock(&mvm->mutex);
3031 return ret;
3032}
3033
3034static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3035 struct ieee80211_vif *vif,
3036 struct ieee80211_key_conf *keyconf,
3037 struct ieee80211_sta *sta,
3038 u32 iv32, u16 *phase1key)
3039{
3040 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3041
5023d966
JB		 3042 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3043 return;
3044
8ca151b5
JB		 3045 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3046}
3047
3048
b112889c
AM		 3049static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3050 struct iwl_rx_packet *pkt, void *data)
3051{
3052 struct iwl_mvm *mvm =
3053 container_of(notif_wait, struct iwl_mvm, notif_wait);
3054 struct iwl_hs20_roc_res *resp;
3055 int resp_len = iwl_rx_packet_payload_len(pkt);
3056 struct iwl_mvm_time_event_data *te_data = data;
3057
3058 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3059 return true;
3060
3061 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3062 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3063 return true;
3064 }
3065
3066 resp = (void *)pkt->data;
3067
3068 IWL_DEBUG_TE(mvm,
3069 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3070 resp->status, resp->event_unique_id);
3071
3072 te_data->uid = le32_to_cpu(resp->event_unique_id);
3073 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3074 te_data->uid);
3075
3076 spin_lock_bh(&mvm->time_event_lock);
3077 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3078 spin_unlock_bh(&mvm->time_event_lock);
3079
3080 return true;
3081}
3082
dc28e12f
MG		 3083#define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3084#define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3085#define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3086#define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3087#define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
b112889c
AM		 3088static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3089 struct ieee80211_channel *channel,
3090 struct ieee80211_vif *vif,
3091 int duration)
3092{
3093 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3094 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3095 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
6eb031d2 3096 static const u16 time_event_response[] = { HOT_SPOT_CMD };
b112889c 3097 struct iwl_notification_wait wait_time_event;
dc28e12f
MG		 3098 u32 dtim_interval = vif->bss_conf.dtim_period *
3099 vif->bss_conf.beacon_int;
3100 u32 req_dur, delay;
b112889c
AM		 3101 struct iwl_hs20_roc_req aux_roc_req = {
3102 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3103 .id_and_color =
3104 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3105 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3106 /* Set the channel info data */
57fbcce3 3107 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
b112889c
AM		 3108 PHY_BAND_24 : PHY_BAND_5,
3109 .channel_info.channel = channel->hw_value,
3110 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3111 /* Set the time and duration */
3112 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
b112889c
AM		 3113 };
3114
dc28e12f
MG		 3115 delay = AUX_ROC_MIN_DELAY;
3116 req_dur = MSEC_TO_TU(duration);
3117
3118 /*
3119 * If we are associated we want the delay time to be at least one
3120 * dtim interval so that the FW can wait until after the DTIM and
3121 * then start the time event, this will potentially allow us to
3122 * remain off-channel for the max duration.
3123 * Since we want to use almost a whole dtim interval we would also
3124 * like the delay to be for 2-3 dtim intervals, in case there are
3125 * other time events with higher priority.
3126 */
3127 if (vif->bss_conf.assoc) {
3128 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3129 /* We cannot remain off-channel longer than the DTIM interval */
3130 if (dtim_interval <= req_dur) {
3131 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3132 if (req_dur <= AUX_ROC_MIN_DURATION)
3133 req_dur = dtim_interval -
3134 AUX_ROC_MIN_SAFETY_BUFFER;
3135 }
3136 }
3137
3138 aux_roc_req.duration = cpu_to_le32(req_dur);
3139 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3140
3141 IWL_DEBUG_TE(mvm,
3142 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3143 channel->hw_value, req_dur, duration, delay,
3144 dtim_interval);
b112889c
AM		 3145 /* Set the node address */
3146 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3147
a6cc5163
MG		 3148 lockdep_assert_held(&mvm->mutex);
3149
3150 spin_lock_bh(&mvm->time_event_lock);
3151
3152 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3153 spin_unlock_bh(&mvm->time_event_lock);
3154 return -EIO;
3155 }
3156
b112889c
AM		 3157 te_data->vif = vif;
3158 te_data->duration = duration;
3159 te_data->id = HOT_SPOT_CMD;
3160
b112889c
AM		 3161 spin_unlock_bh(&mvm->time_event_lock);
3162
3163 /*
3164 * Use a notification wait, which really just processes the
3165 * command response and doesn't wait for anything, in order
3166 * to be able to process the response and get the UID inside
3167 * the RX path. Using CMD_WANT_SKB doesn't work because it
3168 * stores the buffer and then wakes up this thread, by which
3169 * time another notification (that the time event started)
3170 * might already be processed unsuccessfully.
3171 */
3172 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3173 time_event_response,
3174 ARRAY_SIZE(time_event_response),
3175 iwl_mvm_rx_aux_roc, te_data);
3176
3177 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3178 &aux_roc_req);
3179
3180 if (res) {
3181 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3182 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3183 goto out_clear_te;
3184 }
3185
3186 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3187 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3188 /* should never fail */
3189 WARN_ON_ONCE(res);
3190
3191 if (res) {
3192 out_clear_te:
3193 spin_lock_bh(&mvm->time_event_lock);
3194 iwl_mvm_te_clear_data(mvm, te_data);
3195 spin_unlock_bh(&mvm->time_event_lock);
3196 }
3197
3198 return res;
3199}
3200
8ca151b5
JB		 3201static int iwl_mvm_roc(struct ieee80211_hw *hw,
3202 struct ieee80211_vif *vif,
3203 struct ieee80211_channel *channel,
d339d5ca
IP		 3204 int duration,
3205 enum ieee80211_roc_type type)
8ca151b5
JB		 3206{
3207 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 3208 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 3209 struct cfg80211_chan_def chandef;
31d385ae
IP		 3210 struct iwl_mvm_phy_ctxt *phy_ctxt;
3211 int ret, i;
3212
3213 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3214 duration, type);
8ca151b5 3215
6ed13164
MG		 3216 flush_work(&mvm->roc_done_wk);
3217
a6cc5163
MG		 3218 mutex_lock(&mvm->mutex);
3219
b112889c
AM		 3220 switch (vif->type) {
3221 case NL80211_IFTYPE_STATION:
859d914c
JB		 3222 if (fw_has_capa(&mvm->fw->ucode_capa,
3223 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
5ac6c72e
LC		 3224 /* Use aux roc framework (HS20) */
3225 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3226 vif, duration);
3227 goto out_unlock;
3228 }
3229 IWL_ERR(mvm, "hotspot not supported\n");
3230 ret = -EINVAL;
a6cc5163 3231 goto out_unlock;
b112889c
AM		 3232 case NL80211_IFTYPE_P2P_DEVICE:
3233 /* handle below */
3234 break;
3235 default:
3236 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
a6cc5163
MG		 3237 ret = -EINVAL;
3238 goto out_unlock;
8ca151b5
JB		 3239 }
3240
31d385ae
IP		 3241 for (i = 0; i < NUM_PHY_CTX; i++) {
3242 phy_ctxt = &mvm->phy_ctxts[i];
3243 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3244 continue;
3245
3246 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3247 /*
3248 * Unbind the P2P_DEVICE from the current PHY context,
3249 * and if the PHY context is not used remove it.
3250 */
3251 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3252 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3253 goto out_unlock;
3254
3255 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3256
3257 /* Bind the P2P_DEVICE to the current PHY Context */
3258 mvmvif->phy_ctxt = phy_ctxt;
3259
3260 ret = iwl_mvm_binding_add_vif(mvm, vif);
3261 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3262 goto out_unlock;
3263
3264 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3265 goto schedule_time_event;
3266 }
3267 }
3268
3269 /* Need to update the PHY context only if the ROC channel changed */
3270 if (channel == mvmvif->phy_ctxt->channel)
3271 goto schedule_time_event;
3272
8ca151b5 3273 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 3274
31d385ae
IP		 3275 /*
3276 * Change the PHY context configuration as it is currently referenced
3277 * only by the P2P Device MAC
3278 */
3279 if (mvmvif->phy_ctxt->ref == 1) {
3280 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3281 &chandef, 1, 1);
3282 if (ret)
3283 goto out_unlock;
3284 } else {
3285 /*
3286 * The PHY context is shared with other MACs. Need to remove the
3287 * P2P Device from the binding, allocate an new PHY context and
3288 * create a new binding
3289 */
3290 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3291 if (!phy_ctxt) {
3292 ret = -ENOSPC;
3293 goto out_unlock;
3294 }
3295
3296 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3297 1, 1);
3298 if (ret) {
3299 IWL_ERR(mvm, "Failed to change PHY context\n");
3300 goto out_unlock;
3301 }
3302
3303 /* Unbind the P2P_DEVICE from the current PHY context */
3304 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3305 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3306 goto out_unlock;
3307
3308 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3309
3310 /* Bind the P2P_DEVICE to the new allocated PHY context */
3311 mvmvif->phy_ctxt = phy_ctxt;
3312
3313 ret = iwl_mvm_binding_add_vif(mvm, vif);
3314 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3315 goto out_unlock;
3316
3317 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3318 }
3319
3320schedule_time_event:
8ca151b5 3321 /* Schedule the time events */
e635c797 3322 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 3323
31d385ae 3324out_unlock:
8ca151b5
JB		 3325 mutex_unlock(&mvm->mutex);
3326 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 3327 return ret;
3328}
3329
3330static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3331{
3332 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3333
3334 IWL_DEBUG_MAC80211(mvm, "enter\n");
3335
3336 mutex_lock(&mvm->mutex);
bf5da87f 3337 iwl_mvm_stop_roc(mvm);
8ca151b5
JB		 3338 mutex_unlock(&mvm->mutex);
3339
3340 IWL_DEBUG_MAC80211(mvm, "leave\n");
3341 return 0;
3342}
3343
b08c1d97
LC		 3344static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3345 struct ieee80211_chanctx_conf *ctx)
8ca151b5 3346{
fe0f2de3
IP		 3347 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3348 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 3349 int ret;
3350
b08c1d97
LC		 3351 lockdep_assert_held(&mvm->mutex);
3352
53a9d61e 3353 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 3354
fe0f2de3
IP		 3355 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3356 if (!phy_ctxt) {
3357 ret = -ENOSPC;
3358 goto out;
3359 }
8ca151b5 3360
dcbc3e1a 3361 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
53a9d61e
IP		 3362 ctx->rx_chains_static,
3363 ctx->rx_chains_dynamic);
fe0f2de3
IP		 3364 if (ret) {
3365 IWL_ERR(mvm, "Failed to add PHY context\n");
3366 goto out;
3367 }
3368
53a9d61e 3369 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 3370 *phy_ctxt_id = phy_ctxt->id;
3371out:
b08c1d97
LC		 3372 return ret;
3373}
3374
3375static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3376 struct ieee80211_chanctx_conf *ctx)
3377{
3378 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3379 int ret;
3380
3381 mutex_lock(&mvm->mutex);
3382 ret = __iwl_mvm_add_chanctx(mvm, ctx);
8ca151b5 3383 mutex_unlock(&mvm->mutex);
b08c1d97 3384
8ca151b5
JB		 3385 return ret;
3386}
3387
b08c1d97
LC		 3388static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3389 struct ieee80211_chanctx_conf *ctx)
3390{
3391 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3392 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3393
3394 lockdep_assert_held(&mvm->mutex);
3395
3396 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3397}
3398
8ca151b5
JB		 3399static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3400 struct ieee80211_chanctx_conf *ctx)
3401{
3402 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 3403
3404 mutex_lock(&mvm->mutex);
b08c1d97 3405 __iwl_mvm_remove_chanctx(mvm, ctx);
8ca151b5
JB		 3406 mutex_unlock(&mvm->mutex);
3407}
3408
3409static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3410 struct ieee80211_chanctx_conf *ctx,
3411 u32 changed)
3412{
3413 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 3414 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3415 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 3416
31d385ae
IP		 3417 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3418 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3419 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2dceedae
AN		 3420 IEEE80211_CHANCTX_CHANGE_RADAR |
3421 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
31d385ae
IP		 3422 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3423 phy_ctxt->ref, changed))
3424 return;
3425
8ca151b5 3426 mutex_lock(&mvm->mutex);
4d66449a 3427 iwl_mvm_bt_coex_vif_change(mvm);
dcbc3e1a 3428 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
8ca151b5
JB		 3429 ctx->rx_chains_static,
3430 ctx->rx_chains_dynamic);
3431 mutex_unlock(&mvm->mutex);
3432}
3433
b08c1d97
LC		 3434static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3435 struct ieee80211_vif *vif,
f0c97783
LC		 3436 struct ieee80211_chanctx_conf *ctx,
3437 bool switching_chanctx)
8ca151b5 3438{
fe0f2de3
IP		 3439 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3440 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 3441 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3442 int ret;
3443
b08c1d97 3444 lockdep_assert_held(&mvm->mutex);
8ca151b5 3445
fe0f2de3 3446 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 3447
3448 switch (vif->type) {
3449 case NL80211_IFTYPE_AP:
4741dd04
LC		 3450 /* only needed if we're switching chanctx (i.e. during CSA) */
3451 if (switching_chanctx) {
bd3398e2
AO		 3452 mvmvif->ap_ibss_active = true;
3453 break;
3454 }
5023d966 3455 case NL80211_IFTYPE_ADHOC:
8ca151b5
JB		 3456 /*
3457 * The AP binding flow is handled as part of the start_ap flow
5023d966 3458 * (in bss_info_changed), similarly for IBSS.
8ca151b5
JB		 3459 */
3460 ret = 0;
b08c1d97 3461 goto out;
8ca151b5 3462 case NL80211_IFTYPE_STATION:
2533edce 3463 break;
8ca151b5 3464 case NL80211_IFTYPE_MONITOR:
2533edce
LC		 3465 /* always disable PS when a monitor interface is active */
3466 mvmvif->ps_disabled = true;
8ca151b5
JB		 3467 break;
3468 default:
3469 ret = -EINVAL;
b08c1d97 3470 goto out;
8ca151b5
JB		 3471 }
3472
3473 ret = iwl_mvm_binding_add_vif(mvm, vif);
3474 if (ret)
b08c1d97 3475 goto out;
8ca151b5
JB		 3476
3477 /*
92d85562
AB		 3478 * Power state must be updated before quotas,
3479 * otherwise fw will complain.
3480 */
999609f1 3481 iwl_mvm_power_update_mac(mvm);
92d85562
AB		 3482
3483 /* Setting the quota at this stage is only required for monitor
8ca151b5
JB		 3484 * interfaces. For the other types, the bss_info changed flow
3485 * will handle quota settings.
3486 */
3487 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 3488 mvmvif->monitor_active = true;
7754ae79 3489 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5
JB		 3490 if (ret)
3491 goto out_remove_binding;
0e39eb03
CRI		 3492
3493 ret = iwl_mvm_add_snif_sta(mvm, vif);
3494 if (ret)
3495 goto out_remove_binding;
3496
8ca151b5
JB		 3497 }
3498
bd3398e2 3499 /* Handle binding during CSA */
a57c688d 3500 if (vif->type == NL80211_IFTYPE_AP) {
7754ae79 3501 iwl_mvm_update_quotas(mvm, false, NULL);
3dfd3a97 3502 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
bd3398e2
AO		 3503 }
3504
4741dd04 3505 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
686e7fe1
LC		 3506 u32 duration = 2 * vif->bss_conf.beacon_int;
3507
3508 /* iwl_mvm_protect_session() reads directly from the
3509 * device (the system time), so make sure it is
3510 * available.
3511 */
3512 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3513 if (ret)
3514 goto out_remove_binding;
3515
3516 /* Protect the session to make sure we hear the first
3517 * beacon on the new channel.
3518 */
3519 iwl_mvm_protect_session(mvm, vif, duration, duration,
3520 vif->bss_conf.beacon_int / 2,
3521 true);
3522
3523 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3524
7754ae79 3525 iwl_mvm_update_quotas(mvm, false, NULL);
0ce04ce7
LC		 3526 }
3527
b08c1d97 3528 goto out;
8ca151b5 3529
b08c1d97 3530out_remove_binding:
8ca151b5 3531 iwl_mvm_binding_remove_vif(mvm, vif);
999609f1 3532 iwl_mvm_power_update_mac(mvm);
b08c1d97 3533out:
8ca151b5
JB		 3534 if (ret)
3535 mvmvif->phy_ctxt = NULL;
3536 return ret;
3537}
b08c1d97
LC		 3538static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3539 struct ieee80211_vif *vif,
3540 struct ieee80211_chanctx_conf *ctx)
8ca151b5
JB		 3541{
3542 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
b08c1d97 3543 int ret;
8ca151b5
JB		 3544
3545 mutex_lock(&mvm->mutex);
f0c97783 3546 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
b08c1d97
LC		 3547 mutex_unlock(&mvm->mutex);
3548
3549 return ret;
3550}
3551
3552static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3553 struct ieee80211_vif *vif,
f0c97783
LC		 3554 struct ieee80211_chanctx_conf *ctx,
3555 bool switching_chanctx)
b08c1d97
LC		 3556{
3557 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
f0c97783 3558 struct ieee80211_vif *disabled_vif = NULL;
b08c1d97
LC		 3559
3560 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 3561
3562 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3563
8ca151b5 3564 switch (vif->type) {
5023d966 3565 case NL80211_IFTYPE_ADHOC:
b08c1d97 3566 goto out;
8ca151b5 3567 case NL80211_IFTYPE_MONITOR:
1e1391ca 3568 mvmvif->monitor_active = false;
2533edce 3569 mvmvif->ps_disabled = false;
0e39eb03 3570 iwl_mvm_rm_snif_sta(mvm, vif);
8ca151b5 3571 break;
bd3398e2
AO		 3572 case NL80211_IFTYPE_AP:
3573 /* This part is triggered only during CSA */
4741dd04 3574 if (!switching_chanctx || !mvmvif->ap_ibss_active)
b08c1d97 3575 goto out;
bd3398e2 3576
7ef0aab6
AO		 3577 mvmvif->csa_countdown = false;
3578
003e5236
AO		 3579 /* Set CS bit on all the stations */
3580 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3581
3582 /* Save blocked iface, the timeout is set on the next beacon */
3583 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3584
bd3398e2 3585 mvmvif->ap_ibss_active = false;
f0c97783
LC		 3586 break;
3587 case NL80211_IFTYPE_STATION:
3588 if (!switching_chanctx)
3589 break;
3590
3591 disabled_vif = vif;
3592
3dfd3a97 3593 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
f0c97783 3594 break;
8ca151b5
JB		 3595 default:
3596 break;
3597 }
3598
7754ae79 3599 iwl_mvm_update_quotas(mvm, false, disabled_vif);
1e1391ca 3600 iwl_mvm_binding_remove_vif(mvm, vif);
1c2abf72 3601
b08c1d97 3602out:
a11e144e 3603 mvmvif->phy_ctxt = NULL;
999609f1 3604 iwl_mvm_power_update_mac(mvm);
b08c1d97
LC		 3605}
3606
3607static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3608 struct ieee80211_vif *vif,
3609 struct ieee80211_chanctx_conf *ctx)
3610{
3611 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3612
3613 mutex_lock(&mvm->mutex);
f0c97783 3614 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
8ca151b5
JB		 3615 mutex_unlock(&mvm->mutex);
3616}
3617
50cc9574
LC		 3618static int
3619iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3620 struct ieee80211_vif_chanctx_switch *vifs)
b08c1d97 3621{
b08c1d97
LC		 3622 int ret;
3623
b08c1d97 3624 mutex_lock(&mvm->mutex);
f0c97783 3625 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
b08c1d97
LC		 3626 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3627
3628 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3629 if (ret) {
3630 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3631 goto out_reassign;
3632 }
3633
f0c97783
LC		 3634 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3635 true);
b08c1d97
LC		 3636 if (ret) {
3637 IWL_ERR(mvm,
3638 "failed to assign new_ctx during channel switch\n");
3639 goto out_remove;
3640 }
3641
f697267f
AN		 3642 /* we don't support TDLS during DCM - can be caused by channel switch */
3643 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3644 iwl_mvm_teardown_tdls_peers(mvm);
3645
b08c1d97
LC		 3646 goto out;
3647
3648out_remove:
3649 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3650
3651out_reassign:
6fd1fb63 3652 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
b08c1d97
LC		 3653 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3654 goto out_restart;
3655 }
3656
6fd1fb63
LC		 3657 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3658 true)) {
b08c1d97
LC		 3659 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3660 goto out_restart;
3661 }
3662
3663 goto out;
3664
3665out_restart:
3666 /* things keep failing, better restart the hw */
3667 iwl_mvm_nic_restart(mvm, false);
3668
3669out:
3670 mutex_unlock(&mvm->mutex);
50cc9574
LC		 3671
3672 return ret;
3673}
3674
48a256e8
LC		 3675static int
3676iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3677 struct ieee80211_vif_chanctx_switch *vifs)
3678{
3679 int ret;
3680
3681 mutex_lock(&mvm->mutex);
3682 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3683
3684 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3685 true);
3686 if (ret) {
3687 IWL_ERR(mvm,
3688 "failed to assign new_ctx during channel switch\n");
3689 goto out_reassign;
3690 }
3691
3692 goto out;
3693
3694out_reassign:
3695 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3696 true)) {
3697 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3698 goto out_restart;
3699 }
3700
3701 goto out;
3702
3703out_restart:
3704 /* things keep failing, better restart the hw */
3705 iwl_mvm_nic_restart(mvm, false);
3706
3707out:
3708 mutex_unlock(&mvm->mutex);
3709
3710 return ret;
3711}
3712
50cc9574
LC		 3713static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3714 struct ieee80211_vif_chanctx_switch *vifs,
3715 int n_vifs,
3716 enum ieee80211_chanctx_switch_mode mode)
3717{
3718 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3719 int ret;
3720
3721 /* we only support a single-vif right now */
3722 if (n_vifs > 1)
3723 return -EOPNOTSUPP;
3724
3725 switch (mode) {
3726 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3727 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3728 break;
3729 case CHANCTX_SWMODE_REASSIGN_VIF:
48a256e8 3730 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
50cc9574
LC		 3731 break;
3732 default:
3733 ret = -EOPNOTSUPP;
3734 break;
3735 }
3736
b08c1d97
LC		 3737 return ret;
3738}
3739
8ca151b5
JB		 3740static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3741 struct ieee80211_sta *sta,
3742 bool set)
3743{
3744 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
9d8ce6af 3745 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 3746
3747 if (!mvm_sta || !mvm_sta->vif) {
3748 IWL_ERR(mvm, "Station is not associated to a vif\n");
3749 return -EINVAL;
3750 }
3751
3752 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3753}
3754
507cadf2
DS		 3755#ifdef CONFIG_NL80211_TESTMODE
3756static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3757 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3758 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
f6c6ad42 3759 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
507cadf2
DS		 3760};
3761
3762static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3763 struct ieee80211_vif *vif,
3764 void *data, int len)
3765{
3766 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3767 int err;
3768 u32 noa_duration;
3769
fceb6435
JB		 3770 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
3771 NULL);
507cadf2
DS		 3772 if (err)
3773 return err;
3774
3775 if (!tb[IWL_MVM_TM_ATTR_CMD])
3776 return -EINVAL;
3777
3778 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3779 case IWL_MVM_TM_CMD_SET_NOA:
3780 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3781 !vif->bss_conf.enable_beacon ||
3782 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3783 return -EINVAL;
3784
3785 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3786 if (noa_duration >= vif->bss_conf.beacon_int)
3787 return -EINVAL;
3788
3789 mvm->noa_duration = noa_duration;
3790 mvm->noa_vif = vif;
3791
7754ae79 3792 return iwl_mvm_update_quotas(mvm, false, NULL);
f6c6ad42
JB		 3793 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3794 /* must be associated client vif - ignore authorized */
3795 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3796 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3797 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3798 return -EINVAL;
3799
3800 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
a1022927
EG		 3801 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3802 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
507cadf2
DS		 3803 }
3804
3805 return -EOPNOTSUPP;
3806}
3807
3808static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3809 struct ieee80211_vif *vif,
3810 void *data, int len)
3811{
3812 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3813 int err;
3814
3815 mutex_lock(&mvm->mutex);
3816 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3817 mutex_unlock(&mvm->mutex);
3818
3819 return err;
3820}
3821#endif
3822
622e3f9b
LC		 3823static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3824 struct ieee80211_vif *vif,
3825 struct ieee80211_channel_switch *chsw)
3826{
3827 /* By implementing this operation, we prevent mac80211 from
3828 * starting its own channel switch timer, so that we can call
3829 * ieee80211_chswitch_done() ourselves at the right time
3830 * (which is when the absence time event starts).
3831 */
3832
3833 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3834 "dummy channel switch op\n");
3835}
3836
f028905c
LC		 3837static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3838 struct ieee80211_vif *vif,
3839 struct ieee80211_channel_switch *chsw)
bd3398e2
AO		 3840{
3841 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
664322fa 3842 struct ieee80211_vif *csa_vif;
f6c34820 3843 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
dc88b4ba 3844 u32 apply_time;
f028905c 3845 int ret;
bd3398e2
AO		 3846
3847 mutex_lock(&mvm->mutex);
664322fa 3848
81d62d5a
JB		 3849 mvmvif->csa_failed = false;
3850
6b20d774 3851 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
f028905c 3852 chsw->chandef.center_freq1);
6b20d774 3853
21023b1e 3854 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
f35d9c55 3855
6b20d774
LC		 3856 switch (vif->type) {
3857 case NL80211_IFTYPE_AP:
3858 csa_vif =
3859 rcu_dereference_protected(mvm->csa_vif,
3860 lockdep_is_held(&mvm->mutex));
3861 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3862 "Another CSA is already in progress")) {
3863 ret = -EBUSY;
3864 goto out_unlock;
3865 }
3866
d3a108a4
AO		 3867 /* we still didn't unblock tx. prevent new CS meanwhile */
3868 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
3869 lockdep_is_held(&mvm->mutex))) {
3870 ret = -EBUSY;
3871 goto out_unlock;
3872 }
3873
6b20d774 3874 rcu_assign_pointer(mvm->csa_vif, vif);
7ef0aab6 3875
7ef0aab6
AO		 3876 if (WARN_ONCE(mvmvif->csa_countdown,
3877 "Previous CSA countdown didn't complete")) {
3878 ret = -EBUSY;
3879 goto out_unlock;
3880 }
3881
d3a108a4
AO		 3882 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
3883
6b20d774 3884 break;
dc88b4ba 3885 case NL80211_IFTYPE_STATION:
03098268
AE		 3886 if (mvmvif->lqm_active)
3887 iwl_mvm_send_lqm_cmd(vif,
3888 LQM_CMD_OPERATION_STOP_MEASUREMENT,
3889 0, 0);
3890
4500e133
LC		 3891 /* Schedule the time event to a bit before beacon 1,
3892 * to make sure we're in the new channel when the
3893 * GO/AP arrives.
3894 */
3895 apply_time = chsw->device_timestamp +
3896 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3897 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
dc88b4ba
LC		 3898
3899 if (chsw->block_tx)
3900 iwl_mvm_csa_client_absent(mvm, vif);
3901
4500e133 3902 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
dc88b4ba 3903 apply_time);
c6e0a3e0
LC		 3904 if (mvmvif->bf_data.bf_enabled) {
3905 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3906 if (ret)
3907 goto out_unlock;
3908 }
3909
dc88b4ba 3910 break;
6b20d774
LC		 3911 default:
3912 break;
3913 }
bd3398e2 3914
f6c34820
LC		 3915 mvmvif->ps_disabled = true;
3916
3917 ret = iwl_mvm_power_update_ps(mvm);
3918 if (ret)
3919 goto out_unlock;
f028905c 3920
e198f5e7
AN		 3921 /* we won't be on this channel any longer */
3922 iwl_mvm_teardown_tdls_peers(mvm);
3923
bd3398e2
AO		 3924out_unlock:
3925 mutex_unlock(&mvm->mutex);
f028905c
LC		 3926
3927 return ret;
bd3398e2
AO		 3928}
3929
f6c34820
LC		 3930static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3931 struct ieee80211_vif *vif)
3932{
3933 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3934 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3935 int ret;
3936
3937 mutex_lock(&mvm->mutex);
3938
81d62d5a
JB		 3939 if (mvmvif->csa_failed) {
3940 mvmvif->csa_failed = false;
3941 ret = -EIO;
3942 goto out_unlock;
3943 }
3944
a57c688d
LC		 3945 if (vif->type == NL80211_IFTYPE_STATION) {
3946 struct iwl_mvm_sta *mvmsta;
3947
3948 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3949 mvmvif->ap_sta_id);
3950
3951 if (WARN_ON(!mvmsta)) {
3952 ret = -EIO;
3953 goto out_unlock;
3954 }
3955
3956 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3957
3958 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
c6e0a3e0
LC		 3959
3960 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3961 if (ret)
3962 goto out_unlock;
686e7fe1
LC		 3963
3964 iwl_mvm_stop_session_protection(mvm, vif);
a57c688d
LC		 3965 }
3966
f6c34820
LC		 3967 mvmvif->ps_disabled = false;
3968
3969 ret = iwl_mvm_power_update_ps(mvm);
3970
a57c688d 3971out_unlock:
f6c34820
LC		 3972 mutex_unlock(&mvm->mutex);
3973
3974 return ret;
3975}
3976
c5b0e7c0
EG		 3977static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3978 struct ieee80211_vif *vif, u32 queues, bool drop)
3979{
3980 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3981 struct iwl_mvm_vif *mvmvif;
3982 struct iwl_mvm_sta *mvmsta;
a0f6bf2a
AN		 3983 struct ieee80211_sta *sta;
3984 int i;
3985 u32 msk = 0;
c5b0e7c0
EG		 3986
3987 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3988 return;
3989
24afba76
LK		 3990 /* Make sure we're done with the deferred traffic before flushing */
3991 if (iwl_mvm_is_dqa_supported(mvm))
3992 flush_work(&mvm->add_stream_wk);
3993
c5b0e7c0
EG		 3994 mutex_lock(&mvm->mutex);
3995 mvmvif = iwl_mvm_vif_from_mac80211(vif);
c5b0e7c0 3996
a0f6bf2a 3997 /* flush the AP-station and all TDLS peers */
0ae98812 3998 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
a0f6bf2a
AN		 3999 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4000 lockdep_is_held(&mvm->mutex));
4001 if (IS_ERR_OR_NULL(sta))
4002 continue;
4003
4004 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4005 if (mvmsta->vif != vif)
4006 continue;
4007
4008 /* make sure only TDLS peers or the AP are flushed */
4009 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4010
d49394a1
SS		 4011 if (drop) {
4012 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
4013 IWL_ERR(mvm, "flush request fail\n");
4014 } else {
4015 msk |= mvmsta->tfd_queue_msk;
d6d517b7
SS		 4016 if (iwl_mvm_has_new_tx_api(mvm))
4017 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
d49394a1 4018 }
480acbce 4019 }
c5b0e7c0 4020
d49394a1 4021 mutex_unlock(&mvm->mutex);
4e6c48e0 4022
d49394a1
SS		 4023 /* this can take a while, and we may need/want other operations
4024 * to succeed while doing this, so do it without the mutex held
4025 */
d6d517b7 4026 if (!drop && !iwl_mvm_has_new_tx_api(mvm))
a1a57877 4027 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
c5b0e7c0
EG		 4028}
4029
91a8bcde
JB		 4030static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4031 struct survey_info *survey)
4032{
4033 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4034 int ret;
4035
4036 memset(survey, 0, sizeof(*survey));
4037
4038 /* only support global statistics right now */
4039 if (idx != 0)
4040 return -ENOENT;
4041
280a3efa
JB		 4042 if (!fw_has_capa(&mvm->fw->ucode_capa,
4043 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
91a8bcde
JB		 4044 return -ENOENT;
4045
4046 mutex_lock(&mvm->mutex);
4047
aab6930d 4048 if (iwl_mvm_firmware_running(mvm)) {
33cef925 4049 ret = iwl_mvm_request_statistics(mvm, false);
91a8bcde
JB		 4050 if (ret)
4051 goto out;
4052 }
4053
4054 survey->filled = SURVEY_INFO_TIME |
4055 SURVEY_INFO_TIME_RX |
4056 SURVEY_INFO_TIME_TX |
4057 SURVEY_INFO_TIME_SCAN;
4058 survey->time = mvm->accu_radio_stats.on_time_rf +
4059 mvm->radio_stats.on_time_rf;
4060 do_div(survey->time, USEC_PER_MSEC);
4061
4062 survey->time_rx = mvm->accu_radio_stats.rx_time +
4063 mvm->radio_stats.rx_time;
4064 do_div(survey->time_rx, USEC_PER_MSEC);
4065
4066 survey->time_tx = mvm->accu_radio_stats.tx_time +
4067 mvm->radio_stats.tx_time;
4068 do_div(survey->time_tx, USEC_PER_MSEC);
4069
4070 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4071 mvm->radio_stats.on_time_scan;
4072 do_div(survey->time_scan, USEC_PER_MSEC);
4073
10a7c028 4074 ret = 0;
91a8bcde
JB		 4075 out:
4076 mutex_unlock(&mvm->mutex);
4077 return ret;
4078}
4079
33cef925
JB		 4080static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4081 struct ieee80211_vif *vif,
4082 struct ieee80211_sta *sta,
4083 struct station_info *sinfo)
4084{
4085 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4086 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4087 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4088
988b5968
SS		 4089 if (mvmsta->avg_energy) {
4090 sinfo->signal_avg = mvmsta->avg_energy;
4091 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
4092 }
4093
280a3efa
JB		 4094 if (!fw_has_capa(&mvm->fw->ucode_capa,
4095 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
33cef925
JB		 4096 return;
4097
4098 /* if beacon filtering isn't on mac80211 does it anyway */
4099 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4100 return;
4101
4102 if (!vif->bss_conf.assoc)
4103 return;
4104
4105 mutex_lock(&mvm->mutex);
4106
4107 if (mvmvif->ap_sta_id != mvmsta->sta_id)
4108 goto unlock;
4109
4110 if (iwl_mvm_request_statistics(mvm, false))
4111 goto unlock;
4112
4113 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4114 mvmvif->beacon_stats.accu_num_beacons;
4115 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
4116 if (mvmvif->beacon_stats.avg_signal) {
4117 /* firmware only reports a value after RXing a few beacons */
4118 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4119 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4120 }
4121 unlock:
4122 mutex_unlock(&mvm->mutex);
4123}
4124
4203263d
EG		 4125static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4126 struct ieee80211_vif *vif,
4127 const struct ieee80211_event *event)
d42f5350 4128{
5d4f929e 4129#define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
d42f5350
EG		 4130 do { \
4131 if ((_cnt) && --(_cnt)) \
4132 break; \
5d4f929e 4133 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
d42f5350
EG		 4134 } while (0)
4135
d42f5350
EG		 4136 struct iwl_fw_dbg_trigger_tlv *trig;
4137 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
d42f5350
EG		 4138
4139 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4140 return;
4141
d42f5350
EG		 4142 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4143 trig_mlme = (void *)trig->data;
4144 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4145 return;
4146
d42f5350
EG		 4147 if (event->u.mlme.data == ASSOC_EVENT) {
4148 if (event->u.mlme.status == MLME_DENIED)
4149 CHECK_MLME_TRIGGER(mvm, trig, buf,
4150 trig_mlme->stop_assoc_denied,
4151 "DENIED ASSOC: reason %d",
4152 event->u.mlme.reason);
4153 else if (event->u.mlme.status == MLME_TIMEOUT)
4154 CHECK_MLME_TRIGGER(mvm, trig, buf,
4155 trig_mlme->stop_assoc_timeout,
4156 "ASSOC TIMEOUT");
4157 } else if (event->u.mlme.data == AUTH_EVENT) {
4158 if (event->u.mlme.status == MLME_DENIED)
4159 CHECK_MLME_TRIGGER(mvm, trig, buf,
4160 trig_mlme->stop_auth_denied,
4161 "DENIED AUTH: reason %d",
4162 event->u.mlme.reason);
4163 else if (event->u.mlme.status == MLME_TIMEOUT)
4164 CHECK_MLME_TRIGGER(mvm, trig, buf,
4165 trig_mlme->stop_auth_timeout,
4166 "AUTH TIMEOUT");
4167 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4168 CHECK_MLME_TRIGGER(mvm, trig, buf,
4169 trig_mlme->stop_rx_deauth,
4170 "DEAUTH RX %d", event->u.mlme.reason);
4171 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4172 CHECK_MLME_TRIGGER(mvm, trig, buf,
4173 trig_mlme->stop_tx_deauth,
4174 "DEAUTH TX %d", event->u.mlme.reason);
4175 }
4176#undef CHECK_MLME_TRIGGER
4177}
4178
4203263d
EG		 4179static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4180 struct ieee80211_vif *vif,
4181 const struct ieee80211_event *event)
4182{
4183 struct iwl_fw_dbg_trigger_tlv *trig;
4184 struct iwl_fw_dbg_trigger_ba *ba_trig;
4185
4186 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4187 return;
4188
4189 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4190 ba_trig = (void *)trig->data;
4191 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4192 return;
4193
4194 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4195 return;
4196
4197 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4198 "BAR received from %pM, tid %d, ssn %d",
4199 event->u.ba.sta->addr, event->u.ba.tid,
4200 event->u.ba.ssn);
4201}
4202
4203static void
4204iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4205 struct ieee80211_vif *vif,
4206 const struct ieee80211_event *event)
4207{
4208 struct iwl_fw_dbg_trigger_tlv *trig;
4209 struct iwl_fw_dbg_trigger_ba *ba_trig;
4210
4211 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4212 return;
4213
4214 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4215 ba_trig = (void *)trig->data;
4216 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4217 return;
4218
4219 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4220 return;
4221
4222 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4223 "Frame from %pM timed out, tid %d",
4224 event->u.ba.sta->addr, event->u.ba.tid);
4225}
4226
4227static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4228 struct ieee80211_vif *vif,
4229 const struct ieee80211_event *event)
4230{
4231 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4232
4233 switch (event->type) {
4234 case MLME_EVENT:
4235 iwl_mvm_event_mlme_callback(mvm, vif, event);
4236 break;
4237 case BAR_RX_EVENT:
4238 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4239 break;
4240 case BA_FRAME_TIMEOUT:
4241 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4242 break;
4243 default:
4244 break;
4245 }
4246}
4247
d0ff5d22
SS		 4248void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4249 struct iwl_mvm_internal_rxq_notif *notif,
4250 u32 size)
0636b938 4251{
0636b938
SS		 4252 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4253 int ret;
4254
4255 lockdep_assert_held(&mvm->mutex);
4256
bc029469
SS		 4257 /* TODO - remove a000 disablement when we have RXQ config API */
4258 if (!iwl_mvm_has_new_rx_api(mvm) || iwl_mvm_has_new_tx_api(mvm))
0636b938
SS		 4259 return;
4260
d0ff5d22
SS		 4261 notif->cookie = mvm->queue_sync_cookie;
4262
4263 if (notif->sync)
4264 atomic_set(&mvm->queue_sync_counter,
4265 mvm->trans->num_rx_queues);
0636b938 4266
d0ff5d22 4267 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
0636b938
SS		 4268 if (ret) {
4269 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4270 goto out;
4271 }
d0ff5d22
SS		 4272
4273 if (notif->sync)
3a732c65 4274 ret = wait_event_timeout(mvm->rx_sync_waitq,
d0ff5d22
SS		 4275 atomic_read(&mvm->queue_sync_counter) == 0,
4276 HZ);
0636b938
SS		 4277 WARN_ON_ONCE(!ret);
4278
4279out:
4280 atomic_set(&mvm->queue_sync_counter, 0);
4281 mvm->queue_sync_cookie++;
4282}
4283
4284static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4285{
4286 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
d0ff5d22
SS		 4287 struct iwl_mvm_internal_rxq_notif data = {
4288 .type = IWL_MVM_RXQ_EMPTY,
4289 .sync = 1,
4290 };
0636b938
SS		 4291
4292 mutex_lock(&mvm->mutex);
d0ff5d22 4293 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
0636b938
SS		 4294 mutex_unlock(&mvm->mutex);
4295}
4296
e5209263 4297const struct ieee80211_ops iwl_mvm_hw_ops = {
8ca151b5
JB		 4298 .tx = iwl_mvm_mac_tx,
4299 .ampdu_action = iwl_mvm_mac_ampdu_action,
4300 .start = iwl_mvm_mac_start,
cf2c92d8 4301 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
8ca151b5
JB		 4302 .stop = iwl_mvm_mac_stop,
4303 .add_interface = iwl_mvm_mac_add_interface,
4304 .remove_interface = iwl_mvm_mac_remove_interface,
4305 .config = iwl_mvm_mac_config,
e59647ea 4306 .prepare_multicast = iwl_mvm_prepare_multicast,
8ca151b5 4307 .configure_filter = iwl_mvm_configure_filter,
effd1929 4308 .config_iface_filter = iwl_mvm_config_iface_filter,
8ca151b5
JB		 4309 .bss_info_changed = iwl_mvm_bss_info_changed,
4310 .hw_scan = iwl_mvm_mac_hw_scan,
4311 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1ddbbb0c 4312 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
8ca151b5
JB		 4313 .sta_state = iwl_mvm_mac_sta_state,
4314 .sta_notify = iwl_mvm_mac_sta_notify,
4315 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3e56eadf 4316 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
8ca151b5 4317 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1f3b0ff8 4318 .sta_rc_update = iwl_mvm_sta_rc_update,
8ca151b5
JB		 4319 .conf_tx = iwl_mvm_mac_conf_tx,
4320 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
07ecd897 4321 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
c5b0e7c0 4322 .flush = iwl_mvm_mac_flush,
35a000b7
DS		 4323 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4324 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
8ca151b5
JB		 4325 .set_key = iwl_mvm_mac_set_key,
4326 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4327 .remain_on_channel = iwl_mvm_roc,
4328 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
8ca151b5
JB		 4329 .add_chanctx = iwl_mvm_add_chanctx,
4330 .remove_chanctx = iwl_mvm_remove_chanctx,
4331 .change_chanctx = iwl_mvm_change_chanctx,
4332 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4333 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
b08c1d97 4334 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
8ca151b5 4335
5023d966
JB		 4336 .start_ap = iwl_mvm_start_ap_ibss,
4337 .stop_ap = iwl_mvm_stop_ap_ibss,
4338 .join_ibss = iwl_mvm_start_ap_ibss,
4339 .leave_ibss = iwl_mvm_stop_ap_ibss,
8ca151b5
JB		 4340
4341 .set_tim = iwl_mvm_set_tim,
4342
622e3f9b 4343 .channel_switch = iwl_mvm_channel_switch,
f028905c 4344 .pre_channel_switch = iwl_mvm_pre_channel_switch,
f6c34820 4345 .post_channel_switch = iwl_mvm_post_channel_switch,
bd3398e2 4346
1d3c3f63
AN		 4347 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4348 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4349 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4350
d42f5350
EG		 4351 .event_callback = iwl_mvm_mac_event_callback,
4352
0636b938
SS		 4353 .sync_rx_queues = iwl_mvm_sync_rx_queues,
4354
507cadf2
DS		 4355 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4356
8ca151b5
JB		 4357#ifdef CONFIG_PM_SLEEP
4358 /* look at d3.c */
4359 .suspend = iwl_mvm_suspend,
4360 .resume = iwl_mvm_resume,
4361 .set_wakeup = iwl_mvm_set_wakeup,
4362 .set_rekey_data = iwl_mvm_set_rekey_data,
4363#if IS_ENABLED(CONFIG_IPV6)
4364 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4365#endif
4366 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4367#endif
91a8bcde 4368 .get_survey = iwl_mvm_mac_get_survey,
33cef925 4369 .sta_statistics = iwl_mvm_mac_sta_statistics,
8ca151b5 4370};
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