projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
iwlwifi: mvm: add debugfs entry with the number of net-detect scans
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
CommitLineData
8ca151b5
JB		 1/******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
51368bf7 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5
JB		 10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
410dc5aa 26 * in the file called COPYING.
8ca151b5
JB		 27 *
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
51368bf7 34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc 35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5
JB		 36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65#include <linux/kernel.h>
66#include <linux/slab.h>
67#include <linux/skbuff.h>
68#include <linux/netdevice.h>
69#include <linux/etherdevice.h>
f0c2646a 70#include <linux/ip.h>
2ee8f021 71#include <linux/if_arp.h>
aadede6e 72#include <linux/devcoredump.h>
8ca151b5 73#include <net/mac80211.h>
7b1dd048 74#include <net/ieee80211_radiotap.h>
f0c2646a 75#include <net/tcp.h>
8ca151b5
JB		 76
77#include "iwl-op-mode.h"
78#include "iwl-io.h"
79#include "mvm.h"
80#include "sta.h"
81#include "time-event.h"
82#include "iwl-eeprom-parse.h"
83#include "fw-api-scan.h"
84#include "iwl-phy-db.h"
507cadf2 85#include "testmode.h"
655e6d6d
EG		 86#include "iwl-fw-error-dump.h"
87#include "iwl-prph.h"
363039be 88#include "iwl-csr.h"
88931cc9 89#include "iwl-nvm-parse.h"
8ca151b5
JB		 90
91static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
92 {
93 .max = 1,
8eb38710 94 .types = BIT(NL80211_IFTYPE_STATION),
8ca151b5 95 },
3c15a0fb
JB		 96 {
97 .max = 1,
8eb38710
IP		 98 .types = BIT(NL80211_IFTYPE_AP) |
99 BIT(NL80211_IFTYPE_P2P_CLIENT) |
3c15a0fb
JB		 100 BIT(NL80211_IFTYPE_P2P_GO),
101 },
102 {
103 .max = 1,
104 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
105 },
8ca151b5
JB		 106};
107
108static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
109 {
2624a5ca 110 .num_different_channels = 2,
8ca151b5
JB		 111 .max_interfaces = 3,
112 .limits = iwl_mvm_limits,
113 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
114 },
115};
116
f0c2646a
JB		 117#ifdef CONFIG_PM_SLEEP
118static const struct nl80211_wowlan_tcp_data_token_feature
119iwl_mvm_wowlan_tcp_token_feature = {
120 .min_len = 0,
121 .max_len = 255,
122 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
123};
124
125static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
126 .tok = &iwl_mvm_wowlan_tcp_token_feature,
127 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
128 sizeof(struct ethhdr) -
129 sizeof(struct iphdr) -
130 sizeof(struct tcphdr),
131 .data_interval_max = 65535, /* __le16 in API */
132 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
133 sizeof(struct ethhdr) -
134 sizeof(struct iphdr) -
135 sizeof(struct tcphdr),
136 .seq = true,
137};
138#endif
139
77736923 140#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
2ee8f021
EP		 141/*
142 * Use the reserved field to indicate magic values.
143 * these values will only be used internally by the driver,
144 * and won't make it to the fw (reserved will be 0).
145 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
146 * be the vif's ip address. in case there is not a single
147 * ip address (0, or more than 1), this attribute will
148 * be skipped.
149 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
150 * the LSB bytes of the vif's mac address
151 */
152enum {
153 BC_FILTER_MAGIC_NONE = 0,
154 BC_FILTER_MAGIC_IP,
155 BC_FILTER_MAGIC_MAC,
156};
157
77736923
EP		 158static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
159 {
160 /* arp */
161 .discard = 0,
162 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
163 .attrs = {
164 {
165 /* frame type - arp, hw type - ethernet */
166 .offset_type =
167 BCAST_FILTER_OFFSET_PAYLOAD_START,
168 .offset = sizeof(rfc1042_header),
169 .val = cpu_to_be32(0x08060001),
170 .mask = cpu_to_be32(0xffffffff),
171 },
2ee8f021
EP		 172 {
173 /* arp dest ip */
174 .offset_type =
175 BCAST_FILTER_OFFSET_PAYLOAD_START,
176 .offset = sizeof(rfc1042_header) + 2 +
177 sizeof(struct arphdr) +
178 ETH_ALEN + sizeof(__be32) +
179 ETH_ALEN,
180 .mask = cpu_to_be32(0xffffffff),
181 /* mark it as special field */
182 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
183 },
184 },
185 },
186 {
187 /* dhcp offer bcast */
188 .discard = 0,
189 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
190 .attrs = {
191 {
192 /* udp dest port - 68 (bootp client)*/
193 .offset_type = BCAST_FILTER_OFFSET_IP_END,
194 .offset = offsetof(struct udphdr, dest),
195 .val = cpu_to_be32(0x00440000),
196 .mask = cpu_to_be32(0xffff0000),
197 },
198 {
199 /* dhcp - lsb bytes of client hw address */
200 .offset_type = BCAST_FILTER_OFFSET_IP_END,
201 .offset = 38,
202 .mask = cpu_to_be32(0xffffffff),
203 /* mark it as special field */
204 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
205 },
77736923
EP		 206 },
207 },
208 /* last filter must be empty */
209 {},
210};
211#endif
212
7498cf4c
EP		 213void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
214{
7bb426ea 215 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 216 return;
217
218 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
576eeee9
EP		 219 spin_lock_bh(&mvm->refs_lock);
220 mvm->refs[ref_type]++;
221 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 222 iwl_trans_ref(mvm->trans);
223}
224
225void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
226{
7bb426ea 227 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 228 return;
229
230 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
576eeee9
EP		 231 spin_lock_bh(&mvm->refs_lock);
232 WARN_ON(!mvm->refs[ref_type]--);
233 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 234 iwl_trans_unref(mvm->trans);
235}
236
576eeee9
EP		 237static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
238 enum iwl_mvm_ref_type except_ref)
7498cf4c 239{
576eeee9 240 int i, j;
7498cf4c 241
7bb426ea 242 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 243 return;
244
576eeee9
EP		 245 spin_lock_bh(&mvm->refs_lock);
246 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
247 if (except_ref == i || !mvm->refs[i])
7498cf4c
EP		 248 continue;
249
576eeee9
EP		 250 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
251 i, mvm->refs[i]);
252 for (j = 0; j < mvm->refs[i]; j++)
253 iwl_trans_unref(mvm->trans);
254 mvm->refs[i] = 0;
7498cf4c 255 }
576eeee9 256 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 257}
258
f4cf8680
EP		 259bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
260{
261 int i;
262 bool taken = false;
263
264 if (!iwl_mvm_is_d0i3_supported(mvm))
265 return true;
266
267 spin_lock_bh(&mvm->refs_lock);
268 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
269 if (mvm->refs[i]) {
270 taken = true;
271 break;
272 }
273 }
274 spin_unlock_bh(&mvm->refs_lock);
275
276 return taken;
277}
278
576eeee9 279int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
d40fc489
GG		 280{
281 iwl_mvm_ref(mvm, ref_type);
282
283 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
284 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
285 HZ)) {
286 WARN_ON_ONCE(1);
287 iwl_mvm_unref(mvm, ref_type);
288 return -EIO;
289 }
290
291 return 0;
292}
293
fe0f2de3
IP		 294static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
295{
296 int i;
297
298 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
299 for (i = 0; i < NUM_PHY_CTX; i++) {
300 mvm->phy_ctxts[i].id = i;
301 mvm->phy_ctxts[i].ref = 0;
302 }
303}
304
88931cc9 305struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
8ba2d7a1 306 const char *alpha2,
47c8b154
JD		 307 enum iwl_mcc_source src_id,
308 bool *changed)
88931cc9
AN		 309{
310 struct ieee80211_regdomain *regd = NULL;
311 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
312 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
313 struct iwl_mcc_update_resp *resp;
314
315 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
316
8ba2d7a1 317 lockdep_assert_held(&mvm->mutex);
88931cc9 318
8ba2d7a1 319 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
88931cc9
AN		 320 if (IS_ERR_OR_NULL(resp)) {
321 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
322 PTR_RET(resp));
8ba2d7a1 323 goto out;
88931cc9
AN		 324 }
325
47c8b154
JD		 326 if (changed)
327 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
328
162ee3c9 329 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
88931cc9
AN		 330 __le32_to_cpu(resp->n_channels),
331 resp->channels,
332 __le16_to_cpu(resp->mcc));
8ba2d7a1
EH		 333 /* Store the return source id */
334 src_id = resp->source_id;
88931cc9
AN		 335 kfree(resp);
336 if (IS_ERR_OR_NULL(regd)) {
337 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
8ba2d7a1
EH		 338 PTR_RET(regd));
339 goto out;
88931cc9
AN		 340 }
341
8ba2d7a1
EH		 342 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
343 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
88931cc9 344 mvm->lar_regdom_set = true;
8ba2d7a1 345 mvm->mcc_src = src_id;
88931cc9 346
8ba2d7a1 347out:
88931cc9
AN		 348 return regd;
349}
350
47c8b154
JD		 351void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
352{
353 bool changed;
354 struct ieee80211_regdomain *regd;
355
356 if (!iwl_mvm_is_lar_supported(mvm))
357 return;
358
359 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
360 if (!IS_ERR_OR_NULL(regd)) {
361 /* only update the regulatory core if changed */
362 if (changed)
363 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
364
365 kfree(regd);
366 }
367}
368
369struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
370 bool *changed)
8ba2d7a1
EH		 371{
372 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
373 iwl_mvm_is_wifi_mcc_supported(mvm) ?
374 MCC_SOURCE_GET_CURRENT :
47c8b154 375 MCC_SOURCE_OLD_FW, changed);
8ba2d7a1
EH		 376}
377
378int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
379{
380 enum iwl_mcc_source used_src;
381 struct ieee80211_regdomain *regd;
382 const struct ieee80211_regdomain *r =
383 rtnl_dereference(mvm->hw->wiphy->regd);
384
385 if (!r)
386 return 0;
387
388 /* save the last source in case we overwrite it below */
389 used_src = mvm->mcc_src;
390 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
391 /* Notify the firmware we support wifi location updates */
47c8b154 392 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
8ba2d7a1
EH		 393 if (!IS_ERR_OR_NULL(regd))
394 kfree(regd);
395 }
396
397 /* Now set our last stored MCC and source */
47c8b154 398 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, NULL);
8ba2d7a1
EH		 399 if (IS_ERR_OR_NULL(regd))
400 return -EIO;
401
402 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
403 kfree(regd);
404
405 return 0;
406}
407
8ca151b5
JB		 408int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
409{
410 struct ieee80211_hw *hw = mvm->hw;
831e85f3 411 int num_mac, ret, i;
8ca151b5
JB		 412
413 /* Tell mac80211 our characteristics */
414 hw->flags = IEEE80211_HW_SIGNAL_DBM |
415 IEEE80211_HW_SPECTRUM_MGMT |
416 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
417 IEEE80211_HW_QUEUE_CONTROL |
418 IEEE80211_HW_WANT_MONITOR_VIF |
8ca151b5
JB		 419 IEEE80211_HW_SUPPORTS_PS |
420 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
d2931bbd 421 IEEE80211_HW_AMPDU_AGGREGATION |
d64048ed 422 IEEE80211_HW_TIMING_BEACON_ONLY |
147fc9be 423 IEEE80211_HW_CONNECTION_MONITOR |
b71d9c8a
IY		 424 IEEE80211_HW_CHANCTX_STA_CSA |
425 IEEE80211_HW_SUPPORTS_CLONED_SKBS;
8ca151b5 426
19e737c9 427 hw->queues = mvm->first_agg_queue;
398e8c6c 428 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
7b1dd048
EG		 429 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
430 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
339b3086
ES		 431 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
432 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
8ca151b5 433 hw->rate_control_algorithm = "iwl-mvm-rs";
848955cc
JB		 434 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
435 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
8ca151b5
JB		 436
437 /*
438 * Enable 11w if advertised by firmware and software crypto
439 * is not enabled (as the firmware will interpret some mgmt
440 * packets, so enabling it with software crypto isn't safe)
441 */
442 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
443 !iwlwifi_mod_params.sw_crypto)
444 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
445
1f940386
LC		 446 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
447 hw->wiphy->features |=
448 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
449 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
fb98be5e 450
8ca151b5
JB		 451 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
452 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
fe0f2de3 453 hw->chanctx_data_size = sizeof(u16);
8ca151b5
JB		 454
455 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3c15a0fb
JB		 456 BIT(NL80211_IFTYPE_P2P_CLIENT) |
457 BIT(NL80211_IFTYPE_AP) |
458 BIT(NL80211_IFTYPE_P2P_GO) |
c13b1725
EG		 459 BIT(NL80211_IFTYPE_P2P_DEVICE) |
460 BIT(NL80211_IFTYPE_ADHOC);
5023d966 461
a2f73b6c 462 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
8ba2d7a1
EH		 463 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
464 if (iwl_mvm_is_lar_supported(mvm))
465 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
466 else
467 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
468 REGULATORY_DISABLE_BEACON_HINTS;
8ca151b5 469
3e56eadf
JB		 470 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
471 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
472
94bbed72 473 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
bd3398e2 474
8ca151b5
JB		 475 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
476 hw->wiphy->n_iface_combinations =
477 ARRAY_SIZE(iwl_mvm_iface_combinations);
478
c451e6d4 479 hw->wiphy->max_remain_on_channel_duration = 10000;
8ca151b5 480 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
f1a68542
EG		 481 /* we can compensate an offset of up to 3 channels = 15 MHz */
482 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
8ca151b5
JB		 483
484 /* Extract MAC address */
485 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
486 hw->wiphy->addresses = mvm->addresses;
487 hw->wiphy->n_addresses = 1;
831e85f3
IP		 488
489 /* Extract additional MAC addresses if available */
490 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
491 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
492
493 for (i = 1; i < num_mac; i++) {
494 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
8ca151b5 495 ETH_ALEN);
831e85f3 496 mvm->addresses[i].addr[5]++;
8ca151b5
JB		 497 hw->wiphy->n_addresses++;
498 }
499
fe0f2de3
IP		 500 iwl_mvm_reset_phy_ctxts(mvm);
501
48849a41 502 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
20f1a5de 503
8ca151b5
JB		 504 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
505
506 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
507 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
508 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
3d44eebf 509 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
8ca151b5
JB		 510 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
511 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
512
c9faccc9
ES		 513 if ((mvm->fw->ucode_capa.capa[0] &
514 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
515 (mvm->fw->ucode_capa.api[0] &
516 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
3d44eebf
ES		 517 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
518 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
519 }
520
8ca151b5
JB		 521 hw->wiphy->hw_version = mvm->trans->hw_id;
522
ade50652 523 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
8ca151b5
JB		 524 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
525 else
526 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
527
6efaaf33
EG		 528 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
529 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
530 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
531 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
532 /* we create the 802.11 header and zero length SSID IE. */
533 hw->wiphy->max_sched_scan_ie_len =
534 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
535 }
35a000b7 536
8ca151b5 537 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
ab480030 538 NL80211_FEATURE_LOW_PRIORITY_SCAN |
0d8614b4
EP		 539 NL80211_FEATURE_P2P_GO_OPPPS |
540 NL80211_FEATURE_DYNAMIC_SMPS |
9b5452fd
EG		 541 NL80211_FEATURE_STATIC_SMPS |
542 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
8ca151b5 543
f1daa00e
AO		 544 if (mvm->fw->ucode_capa.capa[0] &
545 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
546 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
226bcd48
AK		 547 if (mvm->fw->ucode_capa.capa[0] &
548 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
549 hw->wiphy->features |= NL80211_FEATURE_QUIET;
f1daa00e 550
73897bd1
AO		 551 if (mvm->fw->ucode_capa.capa[0] &
552 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
553 hw->wiphy->features |=
554 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
555
556 if (mvm->fw->ucode_capa.capa[0] &
557 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
558 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
559
8ca151b5
JB		 560 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
561
e36e5433 562 /* currently FW API supports only one optional cipher scheme */
9ddca860 563 if (mvm->fw->cs[0].cipher) {
e36e5433 564 mvm->hw->n_cipher_schemes = 1;
9ddca860 565 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
e36e5433
MS		 566 }
567
8ca151b5 568#ifdef CONFIG_PM_SLEEP
d15a747f
EP		 569 if (iwl_mvm_is_d0i3_supported(mvm) &&
570 device_can_wakeup(mvm->trans->dev)) {
571 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
572 hw->wiphy->wowlan = &mvm->wowlan;
91742449
EP		 573 }
574
575 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
8ca151b5
JB		 576 mvm->trans->ops->d3_suspend &&
577 mvm->trans->ops->d3_resume &&
578 device_can_wakeup(mvm->trans->dev)) {
91742449
EP		 579 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
580 WIPHY_WOWLAN_DISCONNECT |
581 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
582 WIPHY_WOWLAN_RFKILL_RELEASE |
583 WIPHY_WOWLAN_NET_DETECT;
8ca151b5 584 if (!iwlwifi_mod_params.sw_crypto)
964dc9e2
JB		 585 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
586 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
587 WIPHY_WOWLAN_4WAY_HANDSHAKE;
588
589 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
590 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
591 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
c55385f5 592 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
964dc9e2
JB		 593 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
594 hw->wiphy->wowlan = &mvm->wowlan;
8ca151b5
JB		 595 }
596#endif
597
77736923
EP		 598#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
599 /* assign default bcast filtering configuration */
600 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
601#endif
602
8ca151b5
JB		 603 ret = iwl_mvm_leds_init(mvm);
604 if (ret)
605 return ret;
606
d8f1c515
AN		 607 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
608 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
609 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
610 }
611
1d3c3f63
AN		 612 if (mvm->fw->ucode_capa.capa[0] &
613 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
614 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
615 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
616 }
617
b7327d89
EG		 618 ret = ieee80211_register_hw(mvm->hw);
619 if (ret)
620 iwl_mvm_leds_exit(mvm);
621
622 return ret;
8ca151b5
JB		 623}
624
b2492501
AN		 625static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
626 struct ieee80211_sta *sta,
627 struct sk_buff *skb)
628{
629 struct iwl_mvm_sta *mvmsta;
630 bool defer = false;
631
632 /*
633 * double check the IN_D0I3 flag both before and after
634 * taking the spinlock, in order to prevent taking
635 * the spinlock when not needed.
636 */
637 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
638 return false;
639
640 spin_lock(&mvm->d0i3_tx_lock);
641 /*
642 * testing the flag again ensures the skb dequeue
643 * loop (on d0i3 exit) hasn't run yet.
644 */
645 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
646 goto out;
647
648 mvmsta = iwl_mvm_sta_from_mac80211(sta);
649 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
650 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
651 goto out;
652
653 __skb_queue_tail(&mvm->d0i3_tx, skb);
654 ieee80211_stop_queues(mvm->hw);
655
656 /* trigger wakeup */
657 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
658 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
659
660 defer = true;
661out:
662 spin_unlock(&mvm->d0i3_tx_lock);
663 return defer;
664}
665
8ca151b5
JB		 666static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
667 struct ieee80211_tx_control *control,
668 struct sk_buff *skb)
669{
670 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3e56eadf
JB		 671 struct ieee80211_sta *sta = control->sta;
672 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
673 struct ieee80211_hdr *hdr = (void *)skb->data;
8ca151b5 674
9ee718aa
EL		 675 if (iwl_mvm_is_radio_killed(mvm)) {
676 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
8ca151b5
JB		 677 goto drop;
678 }
679
398e8c6c 680 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
a6cc5163
MG		 681 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
682 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
8ca151b5
JB		 683 goto drop;
684
3e56eadf
JB		 685 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
686 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
687 ieee80211_is_mgmt(hdr->frame_control) &&
688 !ieee80211_is_deauth(hdr->frame_control) &&
689 !ieee80211_is_disassoc(hdr->frame_control) &&
690 !ieee80211_is_action(hdr->frame_control)))
691 sta = NULL;
692
693 if (sta) {
b2492501
AN		 694 if (iwl_mvm_defer_tx(mvm, sta, skb))
695 return;
3e56eadf 696 if (iwl_mvm_tx_skb(mvm, skb, sta))
8ca151b5
JB		 697 goto drop;
698 return;
699 }
700
701 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
702 goto drop;
703 return;
704 drop:
705 ieee80211_free_txskb(hw, skb);
706}
707
205e2210
EG		 708static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
709{
710 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
711 return false;
712 return true;
713}
714
715static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
716{
717 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
718 return false;
719 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
720 return true;
721
722 /* enabled by default */
723 return true;
724}
725
8ca151b5
JB		 726static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
727 struct ieee80211_vif *vif,
728 enum ieee80211_ampdu_mlme_action action,
729 struct ieee80211_sta *sta, u16 tid,
730 u16 *ssn, u8 buf_size)
731{
732 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
733 int ret;
b2492501 734 bool tx_agg_ref = false;
8ca151b5
JB		 735
736 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
737 sta->addr, tid, action);
738
739 if (!(mvm->nvm_data->sku_cap_11n_enable))
740 return -EACCES;
741
b2492501 742 /* return from D0i3 before starting a new Tx aggregation */
9256c205
EP		 743 switch (action) {
744 case IEEE80211_AMPDU_TX_START:
745 case IEEE80211_AMPDU_TX_STOP_CONT:
746 case IEEE80211_AMPDU_TX_STOP_FLUSH:
747 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
748 case IEEE80211_AMPDU_TX_OPERATIONAL:
b2492501 749 /*
9256c205
EP		 750 * for tx start, wait synchronously until D0i3 exit to
751 * get the correct sequence number for the tid.
752 * additionally, some other ampdu actions use direct
753 * target access, which is not handled automatically
754 * by the trans layer (unlike commands), so wait for
755 * d0i3 exit in these cases as well.
b2492501 756 */
d40fc489
GG		 757 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
758 if (ret)
759 return ret;
760
761 tx_agg_ref = true;
9256c205
EP		 762 break;
763 default:
764 break;
b2492501
AN		 765 }
766
8ca151b5
JB		 767 mutex_lock(&mvm->mutex);
768
769 switch (action) {
770 case IEEE80211_AMPDU_RX_START:
205e2210 771 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
8ca151b5
JB		 772 ret = -EINVAL;
773 break;
774 }
775 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
776 break;
777 case IEEE80211_AMPDU_RX_STOP:
778 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
779 break;
780 case IEEE80211_AMPDU_TX_START:
205e2210 781 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
5d158efa
EG		 782 ret = -EINVAL;
783 break;
784 }
8ca151b5
JB		 785 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
786 break;
787 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 788 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
789 break;
8ca151b5
JB		 790 case IEEE80211_AMPDU_TX_STOP_FLUSH:
791 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 792 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 793 break;
794 case IEEE80211_AMPDU_TX_OPERATIONAL:
795 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
796 break;
797 default:
798 WARN_ON_ONCE(1);
799 ret = -EINVAL;
800 break;
801 }
802 mutex_unlock(&mvm->mutex);
803
b2492501
AN		 804 /*
805 * If the tid is marked as started, we won't use it for offloaded
806 * traffic on the next D0i3 entry. It's safe to unref.
807 */
808 if (tx_agg_ref)
809 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
810
8ca151b5
JB		 811 return ret;
812}
813
814static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
815 struct ieee80211_vif *vif)
816{
817 struct iwl_mvm *mvm = data;
818 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
819
820 mvmvif->uploaded = false;
821 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
822
8ca151b5
JB		 823 spin_lock_bh(&mvm->time_event_lock);
824 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
825 spin_unlock_bh(&mvm->time_event_lock);
826
fe0f2de3 827 mvmvif->phy_ctxt = NULL;
8a275bad 828 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
8ca151b5
JB		 829}
830
aadede6e
JB		 831static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
832 const void *data, size_t datalen)
833{
834 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
835 ssize_t bytes_read;
836 ssize_t bytes_read_trans;
837
838 if (offset < dump_ptrs->op_mode_len) {
839 bytes_read = min_t(ssize_t, count,
840 dump_ptrs->op_mode_len - offset);
841 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
842 bytes_read);
843 offset += bytes_read;
844 count -= bytes_read;
845
846 if (count == 0)
847 return bytes_read;
848 } else {
849 bytes_read = 0;
850 }
851
852 if (!dump_ptrs->trans_ptr)
853 return bytes_read;
854
855 offset -= dump_ptrs->op_mode_len;
856 bytes_read_trans = min_t(ssize_t, count,
857 dump_ptrs->trans_ptr->len - offset);
858 memcpy(buffer + bytes_read,
859 (u8 *)dump_ptrs->trans_ptr->data + offset,
860 bytes_read_trans);
861
862 return bytes_read + bytes_read_trans;
863}
864
865static void iwl_mvm_free_coredump(const void *data)
866{
867 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
868
869 vfree(fw_error_dump->op_mode_ptr);
870 vfree(fw_error_dump->trans_ptr);
871 kfree(fw_error_dump);
872}
873
04fd2c28
LK		 874static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
875 struct iwl_fw_error_dump_data **dump_data)
876{
877 struct iwl_fw_error_dump_fifo *fifo_hdr;
878 u32 *fifo_data;
879 u32 fifo_len;
880 unsigned long flags;
881 int i, j;
882
883 if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
884 return;
885
886 /* Pull RXF data from all RXFs */
887 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
888 /*
889 * Keep aside the additional offset that might be needed for
890 * next RXF
891 */
892 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
893
894 fifo_hdr = (void *)(*dump_data)->data;
895 fifo_data = (void *)fifo_hdr->data;
896 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
897
898 /* No need to try to read the data if the length is 0 */
899 if (fifo_len == 0)
900 continue;
901
902 /* Add a TLV for the RXF */
903 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
904 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
905
906 fifo_hdr->fifo_num = cpu_to_le32(i);
907 fifo_hdr->available_bytes =
908 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
909 RXF_RD_D_SPACE +
910 offset_diff));
911 fifo_hdr->wr_ptr =
912 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
913 RXF_RD_WR_PTR +
914 offset_diff));
915 fifo_hdr->rd_ptr =
916 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
917 RXF_RD_RD_PTR +
918 offset_diff));
919 fifo_hdr->fence_ptr =
920 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
921 RXF_RD_FENCE_PTR +
922 offset_diff));
923 fifo_hdr->fence_mode =
924 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
925 RXF_SET_FENCE_MODE +
926 offset_diff));
927
928 /* Lock fence */
929 iwl_trans_write_prph(mvm->trans,
930 RXF_SET_FENCE_MODE + offset_diff, 0x1);
931 /* Set fence pointer to the same place like WR pointer */
932 iwl_trans_write_prph(mvm->trans,
933 RXF_LD_WR2FENCE + offset_diff, 0x1);
934 /* Set fence offset */
935 iwl_trans_write_prph(mvm->trans,
936 RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
937 0x0);
938
939 /* Read FIFO */
940 fifo_len /= sizeof(u32); /* Size in DWORDS */
941 for (j = 0; j < fifo_len; j++)
942 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
943 RXF_FIFO_RD_FENCE_INC +
944 offset_diff);
945 *dump_data = iwl_fw_error_next_data(*dump_data);
946 }
947
948 /* Pull TXF data from all TXFs */
949 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
950 /* Mark the number of TXF we're pulling now */
951 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
952
953 fifo_hdr = (void *)(*dump_data)->data;
954 fifo_data = (void *)fifo_hdr->data;
955 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
956
957 /* No need to try to read the data if the length is 0 */
958 if (fifo_len == 0)
959 continue;
960
961 /* Add a TLV for the FIFO */
962 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
963 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
964
965 fifo_hdr->fifo_num = cpu_to_le32(i);
966 fifo_hdr->available_bytes =
967 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
968 TXF_FIFO_ITEM_CNT));
969 fifo_hdr->wr_ptr =
970 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
971 TXF_WR_PTR));
972 fifo_hdr->rd_ptr =
973 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
974 TXF_RD_PTR));
975 fifo_hdr->fence_ptr =
976 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
977 TXF_FENCE_PTR));
978 fifo_hdr->fence_mode =
979 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
980 TXF_LOCK_FENCE));
981
982 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
983 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
984 TXF_WR_PTR);
985
986 /* Dummy-read to advance the read pointer to the head */
987 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
988
989 /* Read FIFO */
990 fifo_len /= sizeof(u32); /* Size in DWORDS */
991 for (j = 0; j < fifo_len; j++)
992 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
993 TXF_READ_MODIFY_DATA);
994 *dump_data = iwl_fw_error_next_data(*dump_data);
995 }
996
997 iwl_trans_release_nic_access(mvm->trans, &flags);
998}
999
b6eaa45a
EG		 1000void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
1001{
1002 if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert ||
1003 !mvm->fw_dump_desc)
1004 return;
1005
1006 kfree(mvm->fw_dump_desc);
1007 mvm->fw_dump_desc = NULL;
1008}
1009
e539761d
LK		 1010#define IWL8260_ICCM_OFFSET 0x44000 /* Only for B-step */
1011#define IWL8260_ICCM_LEN 0xC000 /* Only for B-step */
1012
4bfa47f3 1013void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
655e6d6d
EG		 1014{
1015 struct iwl_fw_error_dump_file *dump_file;
1016 struct iwl_fw_error_dump_data *dump_data;
1017 struct iwl_fw_error_dump_info *dump_info;
a549b296 1018 struct iwl_fw_error_dump_mem *dump_mem;
b6eaa45a 1019 struct iwl_fw_error_dump_trigger_desc *dump_trig;
48eb7b34 1020 struct iwl_mvm_dump_ptrs *fw_error_dump;
655e6d6d 1021 u32 sram_len, sram_ofs;
04fd2c28 1022 u32 file_len, fifo_data_len = 0;
addfaada 1023 u32 smem_len = mvm->cfg->smem_len;
86138324 1024 u32 sram2_len = mvm->cfg->dccm2_len;
655e6d6d
EG		 1025
1026 lockdep_assert_held(&mvm->mutex);
1027
aadede6e 1028 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
48eb7b34
EG		 1029 if (!fw_error_dump)
1030 return;
1031
f53bf4c7
LK		 1032 /* SRAM - include stack CCM if driver knows the values for it */
1033 if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
1034 const struct fw_img *img;
1035
1036 img = &mvm->fw->img[mvm->cur_ucode];
1037 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1038 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
1039 } else {
1040 sram_ofs = mvm->cfg->dccm_offset;
1041 sram_len = mvm->cfg->dccm_len;
1042 }
655e6d6d 1043
04fd2c28
LK		 1044 /* reading RXF/TXF sizes */
1045 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
1046 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
1047 int i;
1048
1049 fifo_data_len = 0;
1050
1051 /* Count RXF size */
1052 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
1053 if (!mem_cfg->rxfifo_size[i])
1054 continue;
1055
1056 /* Add header info */
1057 fifo_data_len += mem_cfg->rxfifo_size[i] +
1058 sizeof(*dump_data) +
1059 sizeof(struct iwl_fw_error_dump_fifo);
1060 }
1061
1062 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
1063 if (!mem_cfg->txfifo_size[i])
1064 continue;
655e6d6d 1065
04fd2c28
LK		 1066 /* Add header info */
1067 fifo_data_len += mem_cfg->txfifo_size[i] +
1068 sizeof(*dump_data) +
1069 sizeof(struct iwl_fw_error_dump_fifo);
1070 }
1071 }
655e6d6d
EG		 1072
1073 file_len = sizeof(*dump_file) +
04fd2c28 1074 sizeof(*dump_data) * 2 +
a549b296 1075 sram_len + sizeof(*dump_mem) +
04fd2c28 1076 fifo_data_len +
655e6d6d
EG		 1077 sizeof(*dump_info);
1078
e539761d
LK		 1079 /*
1080 * In 8000 HW family B-step include the ICCM (which resides separately)
1081 */
1082 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1083 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP)
1084 file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
1085 IWL8260_ICCM_LEN;
1086
b6eaa45a
EG		 1087 if (mvm->fw_dump_desc)
1088 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
1089 mvm->fw_dump_desc->len;
1090
addfaada
LK		 1091 /* Make room for the SMEM, if it exists */
1092 if (smem_len)
a549b296 1093 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
addfaada 1094
86138324
IY		 1095 /* Make room for the secondary SRAM, if it exists */
1096 if (sram2_len)
1097 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
1098
5bfe6f53 1099 dump_file = vzalloc(file_len);
48eb7b34
EG		 1100 if (!dump_file) {
1101 kfree(fw_error_dump);
b6eaa45a 1102 iwl_mvm_free_fw_dump_desc(mvm);
655e6d6d 1103 return;
48eb7b34 1104 }
655e6d6d 1105
48eb7b34 1106 fw_error_dump->op_mode_ptr = dump_file;
655e6d6d
EG		 1107
1108 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
655e6d6d
EG		 1109 dump_data = (void *)dump_file->data;
1110
1111 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
1112 dump_data->len = cpu_to_le32(sizeof(*dump_info));
1113 dump_info = (void *) dump_data->data;
1114 dump_info->device_family =
1115 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
1116 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
1117 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
435da2ce 1118 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
655e6d6d
EG		 1119 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
1120 sizeof(dump_info->fw_human_readable));
1121 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1122 sizeof(dump_info->dev_human_readable));
1123 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1124 sizeof(dump_info->bus_human_readable));
1125
1126 dump_data = iwl_fw_error_next_data(dump_data);
04fd2c28
LK		 1127 /* We only dump the FIFOs if the FW is in error state */
1128 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1129 iwl_mvm_dump_fifos(mvm, &dump_data);
655e6d6d 1130
b6eaa45a
EG		 1131 if (mvm->fw_dump_desc) {
1132 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
1133 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
1134 mvm->fw_dump_desc->len);
1135 dump_trig = (void *)dump_data->data;
1136 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
1137 sizeof(*dump_trig) + mvm->fw_dump_desc->len);
1138
1139 /* now we can free this copy */
1140 iwl_mvm_free_fw_dump_desc(mvm);
1141 dump_data = iwl_fw_error_next_data(dump_data);
1142 }
1143
a549b296
EG		 1144 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1145 dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1146 dump_mem = (void *)dump_data->data;
1147 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1148 dump_mem->offset = cpu_to_le32(sram_ofs);
1149 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
655e6d6d
EG		 1150 sram_len);
1151
addfaada
LK		 1152 if (smem_len) {
1153 dump_data = iwl_fw_error_next_data(dump_data);
e06d8437
EG		 1154 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1155 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1156 dump_mem = (void *)dump_data->data;
1157 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1158 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
addfaada 1159 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
e06d8437 1160 dump_mem->data, smem_len);
addfaada
LK		 1161 }
1162
86138324
IY		 1163 if (sram2_len) {
1164 dump_data = iwl_fw_error_next_data(dump_data);
1165 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1166 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1167 dump_mem = (void *)dump_data->data;
1168 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1169 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1170 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1171 dump_mem->data, sram2_len);
1172 }
1173
e539761d
LK		 1174 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1175 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) {
1176 dump_data = iwl_fw_error_next_data(dump_data);
1177 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1178 dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN +
1179 sizeof(*dump_mem));
1180 dump_mem = (void *)dump_data->data;
1181 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1182 dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET);
1183 iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET,
1184 dump_mem->data, IWL8260_ICCM_LEN);
1185 }
1186
48eb7b34
EG		 1187 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
1188 fw_error_dump->op_mode_len = file_len;
1189 if (fw_error_dump->trans_ptr)
1190 file_len += fw_error_dump->trans_ptr->len;
1191 dump_file->file_len = cpu_to_le32(file_len);
4bfa47f3 1192
aadede6e
JB		 1193 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1194 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
d2709ad7
EG		 1195
1196 clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
655e6d6d 1197}
655e6d6d 1198
b6eaa45a
EG		 1199struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
1200 .trig_desc = {
1201 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
1202 },
1203};
1204
8ca151b5
JB		 1205static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1206{
58629d9d
JB		 1207 /* clear the D3 reconfig, we only need it to avoid dumping a
1208 * firmware coredump on reconfiguration, we shouldn't do that
1209 * on D3->D0 transition
1210 */
b6eaa45a
EG		 1211 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1212 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
58629d9d 1213 iwl_mvm_fw_error_dump(mvm);
b6eaa45a 1214 }
1bd3cbc1 1215
744cb695
EP		 1216 /* cleanup all stale references (scan, roc), but keep the
1217 * ucode_down ref until reconfig is complete
1218 */
1219 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1220
8ca151b5 1221 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 1222
1223 mvm->scan_status = IWL_MVM_SCAN_NONE;
b1873300 1224 mvm->ps_disabled = false;
31b8b343 1225 mvm->calibrating = false;
8ca151b5
JB		 1226
1227 /* just in case one was running */
1228 ieee80211_remain_on_channel_expired(mvm->hw);
1229
1230 ieee80211_iterate_active_interfaces_atomic(
1231 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1232 iwl_mvm_cleanup_iterator, mvm);
1233
fe0f2de3 1234 mvm->p2p_device_vif = NULL;
37577fe2 1235 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
fe0f2de3
IP		 1236
1237 iwl_mvm_reset_phy_ctxts(mvm);
8ca151b5
JB		 1238 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1239 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
a0f6bf2a 1240 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
8a275bad
EG		 1241 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1242 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1243 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1244 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1245 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1246 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
8ca151b5
JB		 1247
1248 ieee80211_wake_queues(mvm->hw);
1249
228670b2
EP		 1250 /* clear any stale d0i3 state */
1251 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1252
8ca151b5 1253 mvm->vif_count = 0;
113a0447 1254 mvm->rx_ba_sessions = 0;
d2709ad7 1255 mvm->fw_dbg_conf = FW_DBG_INVALID;
91a8bcde
JB		 1256
1257 /* keep statistics ticking */
1258 iwl_mvm_accu_radio_stats(mvm);
8ca151b5
JB		 1259}
1260
a0a09243 1261int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
8ca151b5 1262{
8ca151b5
JB		 1263 int ret;
1264
a0a09243 1265 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 1266
1267 /* Clean up some internal and mac80211 state on restart */
1268 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1269 iwl_mvm_restart_cleanup(mvm);
1270
1271 ret = iwl_mvm_up(mvm);
c47af22a
JB		 1272
1273 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1274 /* Something went wrong - we need to finish some cleanup
1275 * that normally iwl_mvm_mac_restart_complete() below
1276 * would do.
1277 */
1278 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1279 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1280 }
1281
a0a09243
LC		 1282 return ret;
1283}
1284
1285static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1286{
1287 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1288 int ret;
1289
37948fcf
EP		 1290 /* Some hw restart cleanups must not hold the mutex */
1291 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1292 /*
1293 * Make sure we are out of d0i3. This is needed
1294 * to make sure the reference accounting is correct
1295 * (and there is no stale d0i3_exit_work).
1296 */
1297 wait_event_timeout(mvm->d0i3_exit_waitq,
1298 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1299 &mvm->status),
1300 HZ);
1301 }
1302
a0a09243
LC		 1303 mutex_lock(&mvm->mutex);
1304 ret = __iwl_mvm_mac_start(mvm);
8ca151b5
JB		 1305 mutex_unlock(&mvm->mutex);
1306
1307 return ret;
1308}
1309
cf2c92d8 1310static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
8ca151b5 1311{
8ca151b5
JB		 1312 int ret;
1313
1314 mutex_lock(&mvm->mutex);
1315
1316 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
b2492501 1317 iwl_mvm_d0i3_enable_tx(mvm, NULL);
7754ae79 1318 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5
JB		 1319 if (ret)
1320 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1321 ret);
1322
7498cf4c
EP		 1323 /* allow transport/FW low power modes */
1324 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1325
cbd2ae2d
AN		 1326 /*
1327 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1328 * of packets the FW sent out, so we must reconnect.
1329 */
1330 iwl_mvm_teardown_tdls_peers(mvm);
1331
8ca151b5
JB		 1332 mutex_unlock(&mvm->mutex);
1333}
1334
088070a2
EP		 1335static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1336{
1337 bool exit_now;
1338
1339 if (!iwl_mvm_is_d0i3_supported(mvm))
1340 return;
1341
1342 mutex_lock(&mvm->d0i3_suspend_mutex);
1343 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1344 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1345 &mvm->d0i3_suspend_flags);
1346 mutex_unlock(&mvm->d0i3_suspend_mutex);
1347
1348 if (exit_now) {
1349 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1350 _iwl_mvm_exit_d0i3(mvm);
1351 }
6735943f
EP		 1352
1353 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1354 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1355 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1356 &mvm->status),
1357 HZ))
1358 WARN_ONCE(1, "D0i3 exit on resume timed out\n");
088070a2
EP		 1359}
1360
cf2c92d8
EP		 1361static void
1362iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1363 enum ieee80211_reconfig_type reconfig_type)
1364{
1365 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1366
1367 switch (reconfig_type) {
1368 case IEEE80211_RECONFIG_TYPE_RESTART:
1369 iwl_mvm_restart_complete(mvm);
1370 break;
1371 case IEEE80211_RECONFIG_TYPE_SUSPEND:
088070a2 1372 iwl_mvm_resume_complete(mvm);
cf2c92d8
EP		 1373 break;
1374 }
1375}
1376
a0a09243 1377void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
8ca151b5 1378{
a0a09243 1379 lockdep_assert_held(&mvm->mutex);
7498cf4c 1380
91a8bcde
JB		 1381 /* firmware counters are obviously reset now, but we shouldn't
1382 * partially track so also clear the fw_reset_accu counters.
1383 */
1384 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1385
0a79a0c0
EP		 1386 /*
1387 * Disallow low power states when the FW is down by taking
1388 * the UCODE_DOWN ref. in case of ongoing hw restart the
1389 * ref is already taken, so don't take it again.
1390 */
1391 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1392 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
7498cf4c 1393
8ca151b5
JB		 1394 /* async_handlers_wk is now blocked */
1395
1396 /*
1397 * The work item could be running or queued if the
1398 * ROC time event stops just as we get here.
1399 */
1400 cancel_work_sync(&mvm->roc_done_wk);
1401
1402 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 1403
1404 iwl_mvm_async_handlers_purge(mvm);
1405 /* async_handlers_list is empty and will stay empty: HW is stopped */
1406
1407 /* the fw is stopped, the aux sta is dead: clean up driver state */
712b24ad 1408 iwl_mvm_del_aux_sta(mvm);
8ca151b5 1409
0a79a0c0
EP		 1410 /*
1411 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1412 * won't be called in this case).
1413 */
1414 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1415
963221be
AB		 1416 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1417 * make sure there's nothing left there and warn if any is found.
1418 */
1419 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
1420 int i;
1421
1422 for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++) {
1423 if (WARN_ONCE(mvm->scan_uid[i],
1424 "UMAC scan UID %d was not cleaned\n",
1425 mvm->scan_uid[i]))
1426 mvm->scan_uid[i] = 0;
1427 }
1428 }
1429
bc44886d 1430 mvm->ucode_loaded = false;
a0a09243 1431}
bc44886d 1432
a0a09243
LC		 1433static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1434{
1435 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1436
1437 flush_work(&mvm->d0i3_exit_work);
1438 flush_work(&mvm->async_handlers_wk);
d2709ad7 1439 cancel_delayed_work_sync(&mvm->fw_dump_wk);
b6eaa45a 1440 iwl_mvm_free_fw_dump_desc(mvm);
a0a09243
LC		 1441
1442 mutex_lock(&mvm->mutex);
1443 __iwl_mvm_mac_stop(mvm);
8ca151b5
JB		 1444 mutex_unlock(&mvm->mutex);
1445
1446 /*
1447 * The worker might have been waiting for the mutex, let it run and
1448 * discover that its list is now empty.
1449 */
1450 cancel_work_sync(&mvm->async_handlers_wk);
1451}
1452
fe0f2de3
IP		 1453static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1454{
1455 u16 i;
1456
1457 lockdep_assert_held(&mvm->mutex);
1458
1459 for (i = 0; i < NUM_PHY_CTX; i++)
1460 if (!mvm->phy_ctxts[i].ref)
1461 return &mvm->phy_ctxts[i];
1462
1463 IWL_ERR(mvm, "No available PHY context\n");
1464 return NULL;
1465}
1466
ee9c6cb0
EG		 1467static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1468 s8 tx_power)
1469{
1470 /* FW is in charge of regulatory enforcement */
1471 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1472 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1473 .pwr_restriction = cpu_to_le16(tx_power),
1474 };
1475
a1022927 1476 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
ee9c6cb0
EG		 1477 sizeof(reduce_txpwr_cmd),
1478 &reduce_txpwr_cmd);
1479}
1480
8ca151b5
JB		 1481static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1482 struct ieee80211_vif *vif)
1483{
1484 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1485 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1486 int ret;
1487
aa5e1832
EG		 1488 mvmvif->mvm = mvm;
1489
d40fc489
GG		 1490 /*
1491 * make sure D0i3 exit is completed, otherwise a target access
1492 * during tx queue configuration could be done when still in
1493 * D0i3 state.
1494 */
1495 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1496 if (ret)
1497 return ret;
1498
8ca151b5
JB		 1499 /*
1500 * Not much to do here. The stack will not allow interface
1501 * types or combinations that we didn't advertise, so we
1502 * don't really have to check the types.
1503 */
1504
1505 mutex_lock(&mvm->mutex);
1506
33cef925
JB		 1507 /* make sure that beacon statistics don't go backwards with FW reset */
1508 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1509 mvmvif->beacon_stats.accu_num_beacons +=
1510 mvmvif->beacon_stats.num_beacons;
1511
e89044d7 1512 /* Allocate resources for the MAC context, and add it to the fw */
8ca151b5
JB		 1513 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1514 if (ret)
1515 goto out_unlock;
1516
1c2abf72 1517 /* Counting number of interfaces is needed for legacy PM */
ea183d02
IP		 1518 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1519 mvm->vif_count++;
ea183d02 1520
8ca151b5
JB		 1521 /*
1522 * The AP binding flow can be done only after the beacon
1523 * template is configured (which happens only in the mac80211
1524 * start_ap() flow), and adding the broadcast station can happen
1525 * only after the binding.
1526 * In addition, since modifying the MAC before adding a bcast
1527 * station is not allowed by the FW, delay the adding of MAC context to
1528 * the point where we can also add the bcast station.
1529 * In short: there's not much we can do at this point, other than
1530 * allocating resources :)
1531 */
5023d966
JB		 1532 if (vif->type == NL80211_IFTYPE_AP ||
1533 vif->type == NL80211_IFTYPE_ADHOC) {
013290aa 1534 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1535 if (ret) {
1536 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1537 goto out_release;
1538 }
1539
77740cb4 1540 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1541 goto out_unlock;
1542 }
1543
8ca151b5
JB		 1544 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1545 if (ret)
1546 goto out_release;
1547
999609f1 1548 ret = iwl_mvm_power_update_mac(mvm);
e5e7aa8e 1549 if (ret)
fd66fc1c 1550 goto out_remove_mac;
8ca151b5 1551
7df15b1e 1552 /* beacon filtering */
a1022927 1553 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
bd3351ba
EP		 1554 if (ret)
1555 goto out_remove_mac;
1556
7df15b1e 1557 if (!mvm->bf_allowed_vif &&
73e5f2c5 1558 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
7df15b1e 1559 mvm->bf_allowed_vif = mvmvif;
a20fd398
AO		 1560 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1561 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
7df15b1e
HG		 1562 }
1563
8ca151b5
JB		 1564 /*
1565 * P2P_DEVICE interface does not have a channel context assigned to it,
1566 * so a dedicated PHY context is allocated to it and the corresponding
1567 * MAC context is bound to it at this stage.
1568 */
1569 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 1570
fe0f2de3
IP		 1571 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1572 if (!mvmvif->phy_ctxt) {
1573 ret = -ENOSPC;
bd3351ba 1574 goto out_free_bf;
fe0f2de3 1575 }
8ca151b5 1576
53a9d61e 1577 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1578 ret = iwl_mvm_binding_add_vif(mvm, vif);
1579 if (ret)
53a9d61e 1580 goto out_unref_phy;
8ca151b5 1581
013290aa 1582 ret = iwl_mvm_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1583 if (ret)
1584 goto out_unbind;
1585
1586 /* Save a pointer to p2p device vif, so it can later be used to
1587 * update the p2p device MAC when a GO is started/stopped */
1588 mvm->p2p_device_vif = vif;
1589 }
1590
63494374 1591 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1592 goto out_unlock;
1593
1594 out_unbind:
1595 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 1596 out_unref_phy:
fe0f2de3 1597 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
bd3351ba
EP		 1598 out_free_bf:
1599 if (mvm->bf_allowed_vif == mvmvif) {
1600 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1601 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1602 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
bd3351ba 1603 }
8ca151b5
JB		 1604 out_remove_mac:
1605 mvmvif->phy_ctxt = NULL;
1606 iwl_mvm_mac_ctxt_remove(mvm, vif);
1607 out_release:
5ee2b215
AB		 1608 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1609 mvm->vif_count--;
1c2abf72 1610
8ca151b5
JB		 1611 iwl_mvm_mac_ctxt_release(mvm, vif);
1612 out_unlock:
1613 mutex_unlock(&mvm->mutex);
1614
d40fc489
GG		 1615 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1616
8ca151b5
JB		 1617 return ret;
1618}
1619
38a12b5b
JB		 1620static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1621 struct ieee80211_vif *vif)
8ca151b5 1622{
d92b732e 1623 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
8ca151b5
JB		 1624
1625 if (tfd_msk) {
fe92e32a
EG		 1626 /*
1627 * mac80211 first removes all the stations of the vif and
1628 * then removes the vif. When it removes a station it also
1629 * flushes the AMPDU session. So by now, all the AMPDU sessions
1630 * of all the stations of this vif are closed, and the queues
1631 * of these AMPDU sessions are properly closed.
1632 * We still need to take care of the shared queues of the vif.
1633 * Flush them here.
1634 */
8ca151b5
JB		 1635 mutex_lock(&mvm->mutex);
1636 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1637 mutex_unlock(&mvm->mutex);
fe92e32a
EG		 1638
1639 /*
1640 * There are transports that buffer a few frames in the host.
1641 * For these, the flush above isn't enough since while we were
1642 * flushing, the transport might have sent more frames to the
1643 * device. To solve this, wait here until the transport is
1644 * empty. Technically, this could have replaced the flush
1645 * above, but flush is much faster than draining. So flush
1646 * first, and drain to make sure we have no frames in the
1647 * transport anymore.
1648 * If a station still had frames on the shared queues, it is
1649 * already marked as draining, so to complete the draining, we
1650 * just need to wait until the transport is empty.
1651 */
1652 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
8ca151b5
JB		 1653 }
1654
1655 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1656 /*
1657 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1658 * We assume here that all the packets sent to the OFFCHANNEL
1659 * queue are sent in ROC session.
1660 */
1661 flush_work(&mvm->roc_done_wk);
1662 } else {
1663 /*
1664 * By now, all the AC queues are empty. The AGG queues are
1665 * empty too. We already got all the Tx responses for all the
1666 * packets in the queues. The drain work can have been
0742a75a 1667 * triggered. Flush it.
8ca151b5
JB		 1668 */
1669 flush_work(&mvm->sta_drained_wk);
1670 }
38a12b5b
JB		 1671}
1672
1673static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1674 struct ieee80211_vif *vif)
1675{
1676 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1677 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1678
1679 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 1680
1681 mutex_lock(&mvm->mutex);
1682
7df15b1e
HG		 1683 if (mvm->bf_allowed_vif == mvmvif) {
1684 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1685 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1686 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
7df15b1e
HG		 1687 }
1688
63494374
JB		 1689 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1690
8ca151b5
JB		 1691 /*
1692 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 1693 * interface is be handled as part of the stop_ap flow.
8ca151b5 1694 */
5023d966
JB		 1695 if (vif->type == NL80211_IFTYPE_AP ||
1696 vif->type == NL80211_IFTYPE_ADHOC) {
507cadf2
DS		 1697#ifdef CONFIG_NL80211_TESTMODE
1698 if (vif == mvm->noa_vif) {
1699 mvm->noa_vif = NULL;
1700 mvm->noa_duration = 0;
1701 }
1702#endif
013290aa 1703 iwl_mvm_dealloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1704 goto out_release;
1705 }
1706
1707 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1708 mvm->p2p_device_vif = NULL;
013290aa 1709 iwl_mvm_rm_bcast_sta(mvm, vif);
8ca151b5 1710 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 1711 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1712 mvmvif->phy_ctxt = NULL;
1713 }
1714
5ee2b215 1715 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5 1716 mvm->vif_count--;
1c2abf72 1717
999609f1 1718 iwl_mvm_power_update_mac(mvm);
8ca151b5
JB		 1719 iwl_mvm_mac_ctxt_remove(mvm, vif);
1720
1721out_release:
1722 iwl_mvm_mac_ctxt_release(mvm, vif);
1723 mutex_unlock(&mvm->mutex);
1724}
1725
1726static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
88f2fd73 1727{
8ca151b5
JB		 1728 return 0;
1729}
1730
e59647ea
EP		 1731struct iwl_mvm_mc_iter_data {
1732 struct iwl_mvm *mvm;
1733 int port_id;
1734};
1735
1736static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1737 struct ieee80211_vif *vif)
1738{
1739 struct iwl_mvm_mc_iter_data *data = _data;
1740 struct iwl_mvm *mvm = data->mvm;
1741 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1742 int ret, len;
1743
1744 /* if we don't have free ports, mcast frames will be dropped */
1745 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1746 return;
1747
1748 if (vif->type != NL80211_IFTYPE_STATION ||
1749 !vif->bss_conf.assoc)
1750 return;
1751
1752 cmd->port_id = data->port_id++;
1753 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1754 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1755
1c4abec0 1756 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
e59647ea
EP		 1757 if (ret)
1758 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1759}
1760
1761static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1762{
1763 struct iwl_mvm_mc_iter_data iter_data = {
1764 .mvm = mvm,
88f2fd73
MG		 1765 };
1766
e59647ea
EP		 1767 lockdep_assert_held(&mvm->mutex);
1768
1769 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1770 return;
1771
1c4abec0 1772 ieee80211_iterate_active_interfaces_atomic(
e59647ea
EP		 1773 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1774 iwl_mvm_mc_iface_iterator, &iter_data);
88f2fd73
MG		 1775}
1776
e59647ea
EP		 1777static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1778 struct netdev_hw_addr_list *mc_list)
8ca151b5 1779{
e59647ea
EP		 1780 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1781 struct iwl_mcast_filter_cmd *cmd;
1782 struct netdev_hw_addr *addr;
f3bd58f4
MS		 1783 int addr_count;
1784 bool pass_all;
e59647ea
EP		 1785 int len;
1786
f3bd58f4
MS		 1787 addr_count = netdev_hw_addr_list_count(mc_list);
1788 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1789 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1790 if (pass_all)
e59647ea 1791 addr_count = 0;
e59647ea
EP		 1792
1793 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1794 cmd = kzalloc(len, GFP_ATOMIC);
1795 if (!cmd)
1796 return 0;
1797
1798 if (pass_all) {
1799 cmd->pass_all = 1;
1800 return (u64)(unsigned long)cmd;
1801 }
1802
1803 netdev_hw_addr_list_for_each(addr, mc_list) {
1804 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1805 cmd->count, addr->addr);
1806 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1807 addr->addr, ETH_ALEN);
1808 cmd->count++;
1809 }
1810
1811 return (u64)(unsigned long)cmd;
8ca151b5
JB		 1812}
1813
1814static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1815 unsigned int changed_flags,
1816 unsigned int *total_flags,
1817 u64 multicast)
1818{
e59647ea
EP		 1819 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1820 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
8ca151b5 1821
e59647ea 1822 mutex_lock(&mvm->mutex);
51b6b9e0 1823
e59647ea
EP		 1824 /* replace previous configuration */
1825 kfree(mvm->mcast_filter_cmd);
1826 mvm->mcast_filter_cmd = cmd;
51b6b9e0 1827
e59647ea
EP		 1828 if (!cmd)
1829 goto out;
51b6b9e0 1830
e59647ea
EP		 1831 iwl_mvm_recalc_multicast(mvm);
1832out:
1833 mutex_unlock(&mvm->mutex);
1834 *total_flags = 0;
51b6b9e0
EG		 1835}
1836
c87163b9
EP		 1837#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1838struct iwl_bcast_iter_data {
1839 struct iwl_mvm *mvm;
1840 struct iwl_bcast_filter_cmd *cmd;
1841 u8 current_filter;
1842};
1843
1844static void
1845iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1846 const struct iwl_fw_bcast_filter *in_filter,
1847 struct iwl_fw_bcast_filter *out_filter)
1848{
1849 struct iwl_fw_bcast_filter_attr *attr;
1850 int i;
1851
1852 memcpy(out_filter, in_filter, sizeof(*out_filter));
1853
1854 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1855 attr = &out_filter->attrs[i];
1856
1857 if (!attr->mask)
1858 break;
1859
2ee8f021
EP		 1860 switch (attr->reserved1) {
1861 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1862 if (vif->bss_conf.arp_addr_cnt != 1) {
1863 attr->mask = 0;
1864 continue;
1865 }
1866
1867 attr->val = vif->bss_conf.arp_addr_list[0];
1868 break;
1869 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1870 attr->val = *(__be32 *)&vif->addr[2];
1871 break;
1872 default:
1873 break;
1874 }
1875 attr->reserved1 = 0;
c87163b9
EP		 1876 out_filter->num_attrs++;
1877 }
1878}
1879
1880static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1881 struct ieee80211_vif *vif)
1882{
1883 struct iwl_bcast_iter_data *data = _data;
1884 struct iwl_mvm *mvm = data->mvm;
1885 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1886 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1887 struct iwl_fw_bcast_mac *bcast_mac;
1888 int i;
1889
1890 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1891 return;
1892
1893 bcast_mac = &cmd->macs[mvmvif->id];
1894
e48393e8
IP		 1895 /*
1896 * enable filtering only for associated stations, but not for P2P
1897 * Clients
1898 */
1899 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1900 !vif->bss_conf.assoc)
c87163b9
EP		 1901 return;
1902
1903 bcast_mac->default_discard = 1;
1904
1905 /* copy all configured filters */
1906 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1907 /*
1908 * Make sure we don't exceed our filters limit.
1909 * if there is still a valid filter to be configured,
1910 * be on the safe side and just allow bcast for this mac.
1911 */
1912 if (WARN_ON_ONCE(data->current_filter >=
1913 ARRAY_SIZE(cmd->filters))) {
1914 bcast_mac->default_discard = 0;
1915 bcast_mac->attached_filters = 0;
1916 break;
1917 }
1918
1919 iwl_mvm_set_bcast_filter(vif,
1920 &mvm->bcast_filters[i],
1921 &cmd->filters[data->current_filter]);
1922
1923 /* skip current filter if it contains no attributes */
1924 if (!cmd->filters[data->current_filter].num_attrs)
1925 continue;
1926
1927 /* attach the filter to current mac */
1928 bcast_mac->attached_filters |=
1929 cpu_to_le16(BIT(data->current_filter));
1930
1931 data->current_filter++;
1932 }
1933}
1934
de06a59e
EP		 1935bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1936 struct iwl_bcast_filter_cmd *cmd)
c87163b9 1937{
c87163b9
EP		 1938 struct iwl_bcast_iter_data iter_data = {
1939 .mvm = mvm,
de06a59e 1940 .cmd = cmd,
c87163b9
EP		 1941 };
1942
3b8983b1
MS		 1943 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1944 return false;
1945
de06a59e
EP		 1946 memset(cmd, 0, sizeof(*cmd));
1947 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1948 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1949
1950#ifdef CONFIG_IWLWIFI_DEBUGFS
1951 /* use debugfs filters/macs if override is configured */
1952 if (mvm->dbgfs_bcast_filtering.override) {
1953 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1954 sizeof(cmd->filters));
1955 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1956 sizeof(cmd->macs));
1957 return true;
1958 }
1959#endif
c87163b9
EP		 1960
1961 /* if no filters are configured, do nothing */
1962 if (!mvm->bcast_filters)
de06a59e 1963 return false;
c87163b9
EP		 1964
1965 /* configure and attach these filters for each associated sta vif */
1966 ieee80211_iterate_active_interfaces(
1967 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1968 iwl_mvm_bcast_filter_iterator, &iter_data);
1969
de06a59e
EP		 1970 return true;
1971}
1972static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1973 struct ieee80211_vif *vif)
1974{
1975 struct iwl_bcast_filter_cmd cmd;
1976
1977 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1978 return 0;
1979
1980 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1981 return 0;
1982
a1022927 1983 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
c87163b9
EP		 1984 sizeof(cmd), &cmd);
1985}
1986#else
1987static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1988 struct ieee80211_vif *vif)
1989{
1990 return 0;
1991}
1992#endif
1993
8ca151b5
JB		 1994static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1995 struct ieee80211_vif *vif,
1996 struct ieee80211_bss_conf *bss_conf,
1997 u32 changes)
1998{
1999 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2000 int ret;
2001
6e97b0d2
IP		 2002 /*
2003 * Re-calculate the tsf id, as the master-slave relations depend on the
2004 * beacon interval, which was not known when the station interface was
2005 * added.
2006 */
2007 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
2008 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2009
3dfd3a97
JB		 2010 /*
2011 * If we're not associated yet, take the (new) BSSID before associating
2012 * so the firmware knows. If we're already associated, then use the old
2013 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2014 * branch for disassociation below.
2015 */
2016 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2017 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2018
2019 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
8ca151b5
JB		 2020 if (ret)
2021 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2022
3dfd3a97
JB		 2023 /* after sending it once, adopt mac80211 data */
2024 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2025 mvmvif->associated = bss_conf->assoc;
2026
8ca151b5
JB		 2027 if (changes & BSS_CHANGED_ASSOC) {
2028 if (bss_conf->assoc) {
33cef925
JB		 2029 /* clear statistics to get clean beacon counter */
2030 iwl_mvm_request_statistics(mvm, true);
2031 memset(&mvmvif->beacon_stats, 0,
2032 sizeof(mvmvif->beacon_stats));
2033
8ca151b5 2034 /* add quota for this interface */
7754ae79 2035 ret = iwl_mvm_update_quotas(mvm, true, NULL);
8ca151b5
JB		 2036 if (ret) {
2037 IWL_ERR(mvm, "failed to update quotas\n");
2038 return;
2039 }
016d27e1
JB		 2040
2041 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2042 &mvm->status)) {
2043 /*
2044 * If we're restarting then the firmware will
2045 * obviously have lost synchronisation with
2046 * the AP. It will attempt to synchronise by
2047 * itself, but we can make it more reliable by
2048 * scheduling a session protection time event.
2049 *
2050 * The firmware needs to receive a beacon to
2051 * catch up with synchronisation, use 110% of
2052 * the beacon interval.
2053 *
2054 * Set a large maximum delay to allow for more
2055 * than a single interface.
2056 */
2057 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2058 iwl_mvm_protect_session(mvm, vif, dur, dur,
d20d37bc 2059 5 * dur, false);
016d27e1 2060 }
1f3b0ff8
LE		 2061
2062 iwl_mvm_sf_update(mvm, vif, false);
175a70b7 2063 iwl_mvm_power_vif_assoc(mvm, vif);
697162a1 2064 if (vif->p2p) {
29a90a49 2065 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
697162a1
EG		 2066 iwl_mvm_update_smps(mvm, vif,
2067 IWL_MVM_SMPS_REQ_PROT,
2068 IEEE80211_SMPS_DYNAMIC);
2069 }
8ca151b5 2070 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1f3b0ff8
LE		 2071 /*
2072 * If update fails - SF might be running in associated
2073 * mode while disassociated - which is forbidden.
2074 */
2075 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2076 "Failed to update SF upon disassociation\n");
2077
8ca151b5
JB		 2078 /* remove AP station now that the MAC is unassoc */
2079 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
2080 if (ret)
2081 IWL_ERR(mvm, "failed to remove AP station\n");
37577fe2
EP		 2082
2083 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2084 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
8ca151b5
JB		 2085 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
2086 /* remove quota for this interface */
7754ae79 2087 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5
JB		 2088 if (ret)
2089 IWL_ERR(mvm, "failed to update quotas\n");
29a90a49
EP		 2090
2091 if (vif->p2p)
2092 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
3dfd3a97
JB		 2093
2094 /* this will take the cleared BSSID from bss_conf */
2095 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2096 if (ret)
2097 IWL_ERR(mvm,
2098 "failed to update MAC %pM (clear after unassoc)\n",
2099 vif->addr);
8ca151b5 2100 }
a20fd398 2101
e59647ea 2102 iwl_mvm_recalc_multicast(mvm);
c87163b9 2103 iwl_mvm_configure_bcast_filter(mvm, vif);
e59647ea 2104
a20fd398
AO		 2105 /* reset rssi values */
2106 mvmvif->bf_data.ave_beacon_signal = 0;
2107
8e484f0b 2108 iwl_mvm_bt_coex_vif_change(mvm);
f94045ed
EG		 2109 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2110 IEEE80211_SMPS_AUTOMATIC);
989c6505 2111 } else if (changes & BSS_CHANGED_BEACON_INFO) {
210a544e
JB		 2112 /*
2113 * We received a beacon _after_ association so
2114 * remove the session protection.
2115 */
2116 iwl_mvm_remove_time_event(mvm, mvmvif,
2117 &mvmvif->time_event_data);
8ca151b5 2118 }
cc87d322
EH		 2119
2120 if (changes & BSS_CHANGED_BEACON_INFO) {
2121 iwl_mvm_sf_update(mvm, vif, false);
2122 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2123 }
2124
1bc10d3b
JB		 2125 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
2126 ret = iwl_mvm_power_update_mac(mvm);
2127 if (ret)
2128 IWL_ERR(mvm, "failed to update power mode\n");
2129 }
2130
88f2fd73
MG		 2131 if (changes & BSS_CHANGED_TXPOWER) {
2132 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2133 bss_conf->txpower);
2134 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2135 }
a20fd398
AO		 2136
2137 if (changes & BSS_CHANGED_CQM) {
3c6acb61 2138 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
a20fd398
AO		 2139 /* reset cqm events tracking */
2140 mvmvif->bf_data.last_cqm_event = 0;
fa7b2e7f
AA		 2141 if (mvmvif->bf_data.bf_enabled) {
2142 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2143 if (ret)
2144 IWL_ERR(mvm,
2145 "failed to update CQM thresholds\n");
2146 }
a20fd398 2147 }
2ee8f021
EP		 2148
2149 if (changes & BSS_CHANGED_ARP_FILTER) {
3c6acb61 2150 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2ee8f021
EP		 2151 iwl_mvm_configure_bcast_filter(mvm, vif);
2152 }
8ca151b5
JB		 2153}
2154
5023d966
JB		 2155static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2156 struct ieee80211_vif *vif)
8ca151b5
JB		 2157{
2158 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2159 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2160 int ret;
2161
576eeee9
EP		 2162 /*
2163 * iwl_mvm_mac_ctxt_add() might read directly from the device
2164 * (the system time), so make sure it is available.
2165 */
2166 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2167 if (ret)
2168 return ret;
2169
8ca151b5
JB		 2170 mutex_lock(&mvm->mutex);
2171
2172 /* Send the beacon template */
2173 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2174 if (ret)
2175 goto out_unlock;
2176
6e97b0d2
IP		 2177 /*
2178 * Re-calculate the tsf id, as the master-slave relations depend on the
2179 * beacon interval, which was not known when the AP interface was added.
2180 */
2181 if (vif->type == NL80211_IFTYPE_AP)
2182 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2183
8ca151b5
JB		 2184 /* Add the mac context */
2185 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2186 if (ret)
2187 goto out_unlock;
2188
2189 /* Perform the binding */
2190 ret = iwl_mvm_binding_add_vif(mvm, vif);
2191 if (ret)
2192 goto out_remove;
2193
8ca151b5
JB		 2194 /* Send the bcast station. At this stage the TBTT and DTIM time events
2195 * are added and applied to the scheduler */
013290aa 2196 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
8ca151b5
JB		 2197 if (ret)
2198 goto out_unbind;
2199
5691e218
IP		 2200 /* must be set before quota calculations */
2201 mvmvif->ap_ibss_active = true;
2202
a11e144e 2203 /* power updated needs to be done before quotas */
999609f1 2204 iwl_mvm_power_update_mac(mvm);
a11e144e 2205
7754ae79 2206 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5 2207 if (ret)
a11e144e 2208 goto out_quota_failed;
8ca151b5 2209
5023d966 2210 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 2211 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 2212 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 2213
29a90a49
EP		 2214 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2215
8e484f0b 2216 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 2217
f697267f
AN		 2218 /* we don't support TDLS during DCM */
2219 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2220 iwl_mvm_teardown_tdls_peers(mvm);
2221
939e4904 2222 goto out_unlock;
8ca151b5 2223
a11e144e 2224out_quota_failed:
999609f1 2225 iwl_mvm_power_update_mac(mvm);
5691e218 2226 mvmvif->ap_ibss_active = false;
013290aa 2227 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5
JB		 2228out_unbind:
2229 iwl_mvm_binding_remove_vif(mvm, vif);
2230out_remove:
2231 iwl_mvm_mac_ctxt_remove(mvm, vif);
2232out_unlock:
2233 mutex_unlock(&mvm->mutex);
576eeee9 2234 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
8ca151b5
JB		 2235 return ret;
2236}
2237
5023d966
JB		 2238static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2239 struct ieee80211_vif *vif)
8ca151b5
JB		 2240{
2241 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2242 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2243
38a12b5b
JB		 2244 iwl_mvm_prepare_mac_removal(mvm, vif);
2245
8ca151b5
JB		 2246 mutex_lock(&mvm->mutex);
2247
664322fa 2248 /* Handle AP stop while in CSA */
7f0a7c67
AO		 2249 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2250 iwl_mvm_remove_time_event(mvm, mvmvif,
2251 &mvmvif->time_event_data);
664322fa 2252 RCU_INIT_POINTER(mvm->csa_vif, NULL);
7f0a7c67 2253 }
664322fa 2254
003e5236
AO		 2255 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2256 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2257 mvm->csa_tx_block_bcn_timeout = 0;
2258 }
2259
5023d966 2260 mvmvif->ap_ibss_active = false;
1c87bbad 2261 mvm->ap_last_beacon_gp2 = 0;
8ca151b5 2262
8e484f0b 2263 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 2264
29a90a49
EP		 2265 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2266
5023d966 2267 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 2268 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 2269 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 2270
7754ae79 2271 iwl_mvm_update_quotas(mvm, false, NULL);
013290aa 2272 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5 2273 iwl_mvm_binding_remove_vif(mvm, vif);
a11e144e 2274
999609f1 2275 iwl_mvm_power_update_mac(mvm);
a11e144e 2276
8ca151b5
JB		 2277 iwl_mvm_mac_ctxt_remove(mvm, vif);
2278
2279 mutex_unlock(&mvm->mutex);
2280}
2281
5023d966
JB		 2282static void
2283iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2284 struct ieee80211_vif *vif,
2285 struct ieee80211_bss_conf *bss_conf,
2286 u32 changes)
8ca151b5 2287{
be2056fc 2288 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8a5e3660 2289
be2056fc
IP		 2290 /* Changes will be applied when the AP/IBSS is started */
2291 if (!mvmvif->ap_ibss_active)
2292 return;
2293
863230da 2294 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
f7d8b702 2295 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
3dfd3a97 2296 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
863230da 2297 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
8a5e3660 2298
8ca151b5 2299 /* Need to send a new beacon template to the FW */
863230da
JB		 2300 if (changes & BSS_CHANGED_BEACON &&
2301 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2302 IWL_WARN(mvm, "Failed updating beacon data\n");
79b7a69d
HD		 2303
2304 if (changes & BSS_CHANGED_TXPOWER) {
2305 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2306 bss_conf->txpower);
2307 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2308 }
2309
8ca151b5
JB		 2310}
2311
2312static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2313 struct ieee80211_vif *vif,
2314 struct ieee80211_bss_conf *bss_conf,
2315 u32 changes)
2316{
2317 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2318
576eeee9
EP		 2319 /*
2320 * iwl_mvm_bss_info_changed_station() might call
2321 * iwl_mvm_protect_session(), which reads directly from
2322 * the device (the system time), so make sure it is available.
2323 */
2324 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2325 return;
2326
8ca151b5
JB		 2327 mutex_lock(&mvm->mutex);
2328
723f02ed 2329 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
fb98be5e 2330 iwl_mvm_scan_offload_stop(mvm, true);
723f02ed 2331
8ca151b5
JB		 2332 switch (vif->type) {
2333 case NL80211_IFTYPE_STATION:
2334 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2335 break;
2336 case NL80211_IFTYPE_AP:
5023d966
JB		 2337 case NL80211_IFTYPE_ADHOC:
2338 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
8ca151b5
JB		 2339 break;
2340 default:
2341 /* shouldn't happen */
2342 WARN_ON_ONCE(1);
2343 }
2344
2345 mutex_unlock(&mvm->mutex);
576eeee9 2346 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
8ca151b5
JB		 2347}
2348
4660dfbb
EP		 2349static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
2350 enum iwl_scan_status scan_type)
2351{
2352 int ret;
2353 bool wait_for_handlers = false;
2354
2355 mutex_lock(&mvm->mutex);
2356
2357 if (mvm->scan_status != scan_type) {
2358 ret = 0;
2359 /* make sure there are no pending notifications */
2360 wait_for_handlers = true;
2361 goto out;
2362 }
2363
2364 switch (scan_type) {
2365 case IWL_MVM_SCAN_SCHED:
2366 ret = iwl_mvm_scan_offload_stop(mvm, true);
2367 break;
2368 case IWL_MVM_SCAN_OS:
2369 ret = iwl_mvm_cancel_scan(mvm);
2370 break;
2371 case IWL_MVM_SCAN_NONE:
2372 default:
2373 WARN_ON_ONCE(1);
2374 ret = -EINVAL;
2375 break;
2376 }
2377 if (ret)
2378 goto out;
2379
2380 wait_for_handlers = true;
2381out:
2382 mutex_unlock(&mvm->mutex);
2383
2384 /* make sure we consume the completion notification */
2385 if (wait_for_handlers)
2386 iwl_mvm_wait_for_async_handlers(mvm);
2387
2388 return ret;
2389}
8ca151b5
JB		 2390static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2391 struct ieee80211_vif *vif,
c56ef672 2392 struct ieee80211_scan_request *hw_req)
8ca151b5
JB		 2393{
2394 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
c56ef672 2395 struct cfg80211_scan_request *req = &hw_req->req;
8ca151b5
JB		 2396 int ret;
2397
762533ba
DS		 2398 if (req->n_channels == 0 ||
2399 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
8ca151b5
JB		 2400 return -EINVAL;
2401
d2496221
DS		 2402 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2403 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
2404 if (ret)
2405 return ret;
2406 }
4660dfbb 2407
8ca151b5
JB		 2408 mutex_lock(&mvm->mutex);
2409
88931cc9
AN		 2410 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2411 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2412 ret = -EBUSY;
2413 goto out;
2414 }
2415
4660dfbb 2416 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
8ca151b5 2417 ret = -EBUSY;
519e2026
AN		 2418 goto out;
2419 }
8ca151b5 2420
519e2026
AN		 2421 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
2422
b975e55a 2423 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
d2496221 2424 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
fb98be5e 2425 else
1f940386 2426 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
fb98be5e 2427
519e2026
AN		 2428 if (ret)
2429 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
2430out:
8ca151b5 2431 mutex_unlock(&mvm->mutex);
8ca151b5
JB		 2432 return ret;
2433}
2434
2435static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2436 struct ieee80211_vif *vif)
2437{
2438 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2439
2440 mutex_lock(&mvm->mutex);
2441
e7d3abab
LC		 2442 /* Due to a race condition, it's possible that mac80211 asks
2443 * us to stop a hw_scan when it's already stopped. This can
2444 * happen, for instance, if we stopped the scan ourselves,
2445 * called ieee80211_scan_completed() and the userspace called
2446 * cancel scan scan before ieee80211_scan_work() could run.
2447 * To handle that, simply return if the scan is not running.
2448 */
2449 /* FIXME: for now, we ignore this race for UMAC scans, since
2450 * they don't set the scan_status.
2451 */
2452 if ((mvm->scan_status == IWL_MVM_SCAN_OS) ||
2453 (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2454 iwl_mvm_cancel_scan(mvm);
8ca151b5
JB		 2455
2456 mutex_unlock(&mvm->mutex);
2457}
2458
2459static void
2460iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
3e56eadf 2461 struct ieee80211_sta *sta, u16 tids,
8ca151b5
JB		 2462 int num_frames,
2463 enum ieee80211_frame_release_type reason,
2464 bool more_data)
2465{
2466 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5 2467
3e56eadf 2468 /* Called when we need to transmit (a) frame(s) from mac80211 */
8ca151b5 2469
3e56eadf
JB		 2470 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2471 tids, more_data, false);
2472}
2473
2474static void
2475iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2476 struct ieee80211_sta *sta, u16 tids,
2477 int num_frames,
2478 enum ieee80211_frame_release_type reason,
2479 bool more_data)
2480{
2481 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2482
2483 /* Called when we need to transmit (a) frame(s) from agg queue */
2484
2485 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2486 tids, more_data, true);
8ca151b5
JB		 2487}
2488
2489static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2490 struct ieee80211_vif *vif,
2491 enum sta_notify_cmd cmd,
2492 struct ieee80211_sta *sta)
2493{
2494 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5b577a90 2495 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
c22b0ff5 2496 unsigned long txqs = 0, tids = 0;
3e56eadf 2497 int tid;
8ca151b5 2498
c22b0ff5
EG		 2499 spin_lock_bh(&mvmsta->lock);
2500 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2501 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2502
2503 if (tid_data->state != IWL_AGG_ON &&
2504 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2505 continue;
2506
2507 __set_bit(tid_data->txq_id, &txqs);
2508
2509 if (iwl_mvm_tid_queued(tid_data) == 0)
2510 continue;
2511
2512 __set_bit(tid, &tids);
2513 }
2514
8ca151b5
JB		 2515 switch (cmd) {
2516 case STA_NOTIFY_SLEEP:
e3d4bc8c 2517 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5 2518 ieee80211_sta_block_awake(hw, sta, true);
3e56eadf 2519
c22b0ff5 2520 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
3e56eadf 2521 ieee80211_sta_set_buffered(sta, tid, true);
c22b0ff5
EG		 2522
2523 if (txqs)
2524 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
8ca151b5
JB		 2525 /*
2526 * The fw updates the STA to be asleep. Tx packets on the Tx
2527 * queues to this station will not be transmitted. The fw will
2528 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2529 */
2530 break;
2531 case STA_NOTIFY_AWAKE:
881acd89 2532 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
8ca151b5 2533 break;
c22b0ff5
EG		 2534
2535 if (txqs)
2536 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
9cc40712 2537 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 2538 break;
2539 default:
2540 break;
2541 }
c22b0ff5 2542 spin_unlock_bh(&mvmsta->lock);
8ca151b5
JB		 2543}
2544
1ddbbb0c
JB		 2545static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2546 struct ieee80211_vif *vif,
2547 struct ieee80211_sta *sta)
2548{
2549 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
9d8ce6af 2550 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
1ddbbb0c
JB		 2551
2552 /*
2553 * This is called before mac80211 does RCU synchronisation,
2554 * so here we already invalidate our internal RCU-protected
2555 * station pointer. The rest of the code will thus no longer
2556 * be able to find the station this way, and we don't rely
2557 * on further RCU synchronisation after the sta_state()
2558 * callback deleted the station.
2559 */
2560 mutex_lock(&mvm->mutex);
2561 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2562 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2563 ERR_PTR(-ENOENT));
2564 mutex_unlock(&mvm->mutex);
2565}
2566
bd1ba664
JB		 2567static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2568 const u8 *bssid)
2569{
2570 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2571 return;
2572
2573 if (iwlwifi_mod_params.uapsd_disable) {
2574 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2575 return;
2576 }
2577
2578 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2579}
2580
8ca151b5
JB		 2581static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2582 struct ieee80211_vif *vif,
2583 struct ieee80211_sta *sta,
2584 enum ieee80211_sta_state old_state,
2585 enum ieee80211_sta_state new_state)
2586{
2587 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2588 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2589 int ret;
2590
2591 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2592 sta->addr, old_state, new_state);
2593
2594 /* this would be a mac80211 bug ... but don't crash */
2595 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2596 return -EINVAL;
2597
2598 /* if a STA is being removed, reuse its ID */
2599 flush_work(&mvm->sta_drained_wk);
2600
2601 mutex_lock(&mvm->mutex);
2602 if (old_state == IEEE80211_STA_NOTEXIST &&
2603 new_state == IEEE80211_STA_NONE) {
48bc1307
JB		 2604 /*
2605 * Firmware bug - it'll crash if the beacon interval is less
2606 * than 16. We can't avoid connecting at all, so refuse the
2607 * station state change, this will cause mac80211 to abandon
2608 * attempts to connect to this AP, and eventually wpa_s will
2609 * blacklist the AP...
2610 */
2611 if (vif->type == NL80211_IFTYPE_STATION &&
2612 vif->bss_conf.beacon_int < 16) {
2613 IWL_ERR(mvm,
2614 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2615 sta->addr, vif->bss_conf.beacon_int);
2616 ret = -EINVAL;
2617 goto out_unlock;
2618 }
cf7b491d
AN		 2619
2620 if (sta->tdls &&
2621 (vif->p2p ||
fa3d07e4
AN		 2622 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2623 IWL_MVM_TDLS_STA_COUNT ||
cf7b491d
AN		 2624 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2625 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2626 ret = -EBUSY;
2627 goto out_unlock;
2628 }
2629
8ca151b5 2630 ret = iwl_mvm_add_sta(mvm, vif, sta);
fa3d07e4
AN		 2631 if (sta->tdls && ret == 0)
2632 iwl_mvm_recalc_tdls_state(mvm, vif, true);
8ca151b5
JB		 2633 } else if (old_state == IEEE80211_STA_NONE &&
2634 new_state == IEEE80211_STA_AUTH) {
e820c2da
HD		 2635 /*
2636 * EBS may be disabled due to previous failures reported by FW.
2637 * Reset EBS status here assuming environment has been changed.
2638 */
2639 mvm->last_ebs_successful = true;
bd1ba664 2640 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
8ca151b5
JB		 2641 ret = 0;
2642 } else if (old_state == IEEE80211_STA_AUTH &&
2643 new_state == IEEE80211_STA_ASSOC) {
7a453973
JB		 2644 ret = iwl_mvm_update_sta(mvm, vif, sta);
2645 if (ret == 0)
2646 iwl_mvm_rs_rate_init(mvm, sta,
b87c2179
ES		 2647 mvmvif->phy_ctxt->channel->band,
2648 true);
8ca151b5
JB		 2649 } else if (old_state == IEEE80211_STA_ASSOC &&
2650 new_state == IEEE80211_STA_AUTHORIZED) {
f59e0e3c
AN		 2651
2652 /* we don't support TDLS during DCM */
2653 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2654 iwl_mvm_teardown_tdls_peers(mvm);
2655
7df15b1e 2656 /* enable beacon filtering */
fa7b2e7f 2657 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2658 ret = 0;
2659 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2660 new_state == IEEE80211_STA_ASSOC) {
7df15b1e 2661 /* disable beacon filtering */
a1022927 2662 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2663 ret = 0;
2664 } else if (old_state == IEEE80211_STA_ASSOC &&
2665 new_state == IEEE80211_STA_AUTH) {
2666 ret = 0;
2667 } else if (old_state == IEEE80211_STA_AUTH &&
2668 new_state == IEEE80211_STA_NONE) {
2669 ret = 0;
2670 } else if (old_state == IEEE80211_STA_NONE &&
2671 new_state == IEEE80211_STA_NOTEXIST) {
2672 ret = iwl_mvm_rm_sta(mvm, vif, sta);
fa3d07e4
AN		 2673 if (sta->tdls)
2674 iwl_mvm_recalc_tdls_state(mvm, vif, false);
8ca151b5
JB		 2675 } else {
2676 ret = -EIO;
2677 }
48bc1307 2678 out_unlock:
8ca151b5
JB		 2679 mutex_unlock(&mvm->mutex);
2680
9c126cd6
LK		 2681 if (sta->tdls && ret == 0) {
2682 if (old_state == IEEE80211_STA_NOTEXIST &&
2683 new_state == IEEE80211_STA_NONE)
2684 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2685 else if (old_state == IEEE80211_STA_NONE &&
2686 new_state == IEEE80211_STA_NOTEXIST)
2687 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2688 }
2689
8ca151b5
JB		 2690 return ret;
2691}
2692
2693static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2694{
2695 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2696
2697 mvm->rts_threshold = value;
2698
2699 return 0;
2700}
2701
1f3b0ff8
LE		 2702static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2703 struct ieee80211_vif *vif,
2704 struct ieee80211_sta *sta, u32 changed)
2705{
2706 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2707
2708 if (vif->type == NL80211_IFTYPE_STATION &&
2709 changed & IEEE80211_RC_NSS_CHANGED)
2710 iwl_mvm_sf_update(mvm, vif, false);
2711}
2712
8ca151b5
JB		 2713static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2714 struct ieee80211_vif *vif, u16 ac,
2715 const struct ieee80211_tx_queue_params *params)
2716{
2717 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2718 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2719
2720 mvmvif->queue_params[ac] = *params;
2721
2722 /*
2723 * No need to update right away, we'll get BSS_CHANGED_QOS
2724 * The exception is P2P_DEVICE interface which needs immediate update.
2725 */
2726 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2727 int ret;
2728
2729 mutex_lock(&mvm->mutex);
3dfd3a97 2730 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
8ca151b5
JB		 2731 mutex_unlock(&mvm->mutex);
2732 return ret;
2733 }
2734 return 0;
2735}
2736
2737static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2738 struct ieee80211_vif *vif)
2739{
2740 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2741 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2742 200 + vif->bss_conf.beacon_int);
2743 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2744 100 + vif->bss_conf.beacon_int);
2745
2746 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2747 return;
2748
576eeee9
EP		 2749 /*
2750 * iwl_mvm_protect_session() reads directly from the device
2751 * (the system time), so make sure it is available.
2752 */
2753 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2754 return;
2755
8ca151b5
JB		 2756 mutex_lock(&mvm->mutex);
2757 /* Try really hard to protect the session and hear a beacon */
d20d37bc 2758 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
8ca151b5 2759 mutex_unlock(&mvm->mutex);
576eeee9
EP		 2760
2761 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
8ca151b5
JB		 2762}
2763
35a000b7
DS		 2764static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2765 struct ieee80211_vif *vif,
2766 struct cfg80211_sched_scan_request *req,
633e2713 2767 struct ieee80211_scan_ies *ies)
35a000b7
DS		 2768{
2769 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2770 int ret;
2771
d2496221
DS		 2772 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2773 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2774 if (ret)
2775 return ret;
2776 }
4660dfbb 2777
35a000b7
DS		 2778 mutex_lock(&mvm->mutex);
2779
88931cc9
AN		 2780 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2781 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
2782 ret = -EBUSY;
2783 goto out;
2784 }
2785
1f940386 2786 if (!vif->bss_conf.idle) {
bd5e4744
DS		 2787 ret = -EBUSY;
2788 goto out;
2789 }
2790
4660dfbb 2791 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
35a000b7
DS		 2792 ret = -EBUSY;
2793 goto out;
2794 }
2795
b141c235 2796 ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
35a000b7 2797 if (ret)
b141c235 2798 mvm->scan_status = IWL_MVM_SCAN_NONE;
d2496221 2799
35a000b7
DS		 2800out:
2801 mutex_unlock(&mvm->mutex);
2802 return ret;
2803}
2804
37e3308c
JB		 2805static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2806 struct ieee80211_vif *vif)
35a000b7
DS		 2807{
2808 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
33ea27f6 2809 int ret;
35a000b7
DS		 2810
2811 mutex_lock(&mvm->mutex);
e7d3abab
LC		 2812
2813 /* Due to a race condition, it's possible that mac80211 asks
2814 * us to stop a sched_scan when it's already stopped. This
2815 * can happen, for instance, if we stopped the scan ourselves,
2816 * called ieee80211_sched_scan_stopped() and the userspace called
2817 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2818 * could run. To handle this, simply return if the scan is
2819 * not running.
2820 */
2821 /* FIXME: for now, we ignore this race for UMAC scans, since
2822 * they don't set the scan_status.
2823 */
2824 if (mvm->scan_status != IWL_MVM_SCAN_SCHED &&
2825 !(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2826 mutex_unlock(&mvm->mutex);
2827 return 0;
2828 }
2829
fb98be5e 2830 ret = iwl_mvm_scan_offload_stop(mvm, false);
35a000b7 2831 mutex_unlock(&mvm->mutex);
33ea27f6 2832 iwl_mvm_wait_for_async_handlers(mvm);
37e3308c 2833
33ea27f6 2834 return ret;
35a000b7
DS		 2835}
2836
8ca151b5
JB		 2837static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2838 enum set_key_cmd cmd,
2839 struct ieee80211_vif *vif,
2840 struct ieee80211_sta *sta,
2841 struct ieee80211_key_conf *key)
2842{
2843 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2844 int ret;
2845
2846 if (iwlwifi_mod_params.sw_crypto) {
2847 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2848 return -EOPNOTSUPP;
2849 }
2850
2851 switch (key->cipher) {
2852 case WLAN_CIPHER_SUITE_TKIP:
2853 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2854 /* fall-through */
2855 case WLAN_CIPHER_SUITE_CCMP:
2856 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2857 break;
2858 case WLAN_CIPHER_SUITE_AES_CMAC:
2859 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2860 break;
2861 case WLAN_CIPHER_SUITE_WEP40:
2862 case WLAN_CIPHER_SUITE_WEP104:
ba3943b0
JB		 2863 /* For non-client mode, only use WEP keys for TX as we probably
2864 * don't have a station yet anyway and would then have to keep
2865 * track of the keys, linking them to each of the clients/peers
2866 * as they appear. For now, don't do that, for performance WEP
2867 * offload doesn't really matter much, but we need it for some
2868 * other offload features in client mode.
8ca151b5 2869 */
ba3943b0
JB		 2870 if (vif->type != NL80211_IFTYPE_STATION)
2871 return 0;
2872 break;
8ca151b5 2873 default:
e36e5433
MS		 2874 /* currently FW supports only one optional cipher scheme */
2875 if (hw->n_cipher_schemes &&
2876 hw->cipher_schemes->cipher == key->cipher)
2877 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2878 else
2879 return -EOPNOTSUPP;
8ca151b5
JB		 2880 }
2881
2882 mutex_lock(&mvm->mutex);
2883
2884 switch (cmd) {
2885 case SET_KEY:
5023d966
JB		 2886 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2887 vif->type == NL80211_IFTYPE_AP) && !sta) {
2888 /*
2889 * GTK on AP interface is a TX-only key, return 0;
2890 * on IBSS they're per-station and because we're lazy
2891 * we don't support them for RX, so do the same.
2892 */
6caffd4f
JB		 2893 ret = 0;
2894 key->hw_key_idx = STA_KEY_IDX_INVALID;
2895 break;
2896 }
2897
8ca151b5
JB		 2898 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2899 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2900 if (ret) {
2901 IWL_WARN(mvm, "set key failed\n");
2902 /*
2903 * can't add key for RX, but we don't need it
2904 * in the device for TX so still return 0
2905 */
6caffd4f 2906 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 2907 ret = 0;
2908 }
2909
2910 break;
2911 case DISABLE_KEY:
6caffd4f
JB		 2912 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2913 ret = 0;
2914 break;
2915 }
2916
8ca151b5
JB		 2917 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2918 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2919 break;
2920 default:
2921 ret = -EINVAL;
2922 }
2923
2924 mutex_unlock(&mvm->mutex);
2925 return ret;
2926}
2927
2928static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2929 struct ieee80211_vif *vif,
2930 struct ieee80211_key_conf *keyconf,
2931 struct ieee80211_sta *sta,
2932 u32 iv32, u16 *phase1key)
2933{
2934 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2935
5023d966
JB		 2936 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2937 return;
2938
8ca151b5
JB		 2939 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2940}
2941
2942
b112889c
AM		 2943static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2944 struct iwl_rx_packet *pkt, void *data)
2945{
2946 struct iwl_mvm *mvm =
2947 container_of(notif_wait, struct iwl_mvm, notif_wait);
2948 struct iwl_hs20_roc_res *resp;
2949 int resp_len = iwl_rx_packet_payload_len(pkt);
2950 struct iwl_mvm_time_event_data *te_data = data;
2951
2952 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2953 return true;
2954
2955 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2956 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2957 return true;
2958 }
2959
2960 resp = (void *)pkt->data;
2961
2962 IWL_DEBUG_TE(mvm,
2963 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2964 resp->status, resp->event_unique_id);
2965
2966 te_data->uid = le32_to_cpu(resp->event_unique_id);
2967 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2968 te_data->uid);
2969
2970 spin_lock_bh(&mvm->time_event_lock);
2971 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2972 spin_unlock_bh(&mvm->time_event_lock);
2973
2974 return true;
2975}
2976
2977#define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2978static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2979 struct ieee80211_channel *channel,
2980 struct ieee80211_vif *vif,
2981 int duration)
2982{
2983 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2984 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2985 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2986 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2987 struct iwl_notification_wait wait_time_event;
2988 struct iwl_hs20_roc_req aux_roc_req = {
2989 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2990 .id_and_color =
2991 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2992 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2993 /* Set the channel info data */
2994 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2995 PHY_BAND_24 : PHY_BAND_5,
2996 .channel_info.channel = channel->hw_value,
2997 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2998 /* Set the time and duration */
2999 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3000 .apply_time_max_delay =
3001 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
3002 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
3003 };
3004
3005 /* Set the node address */
3006 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3007
a6cc5163
MG		 3008 lockdep_assert_held(&mvm->mutex);
3009
3010 spin_lock_bh(&mvm->time_event_lock);
3011
3012 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3013 spin_unlock_bh(&mvm->time_event_lock);
3014 return -EIO;
3015 }
3016
b112889c
AM		 3017 te_data->vif = vif;
3018 te_data->duration = duration;
3019 te_data->id = HOT_SPOT_CMD;
3020
b112889c
AM		 3021 spin_unlock_bh(&mvm->time_event_lock);
3022
3023 /*
3024 * Use a notification wait, which really just processes the
3025 * command response and doesn't wait for anything, in order
3026 * to be able to process the response and get the UID inside
3027 * the RX path. Using CMD_WANT_SKB doesn't work because it
3028 * stores the buffer and then wakes up this thread, by which
3029 * time another notification (that the time event started)
3030 * might already be processed unsuccessfully.
3031 */
3032 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3033 time_event_response,
3034 ARRAY_SIZE(time_event_response),
3035 iwl_mvm_rx_aux_roc, te_data);
3036
3037 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3038 &aux_roc_req);
3039
3040 if (res) {
3041 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3042 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3043 goto out_clear_te;
3044 }
3045
3046 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3047 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3048 /* should never fail */
3049 WARN_ON_ONCE(res);
3050
3051 if (res) {
3052 out_clear_te:
3053 spin_lock_bh(&mvm->time_event_lock);
3054 iwl_mvm_te_clear_data(mvm, te_data);
3055 spin_unlock_bh(&mvm->time_event_lock);
3056 }
3057
3058 return res;
3059}
3060
8ca151b5
JB		 3061static int iwl_mvm_roc(struct ieee80211_hw *hw,
3062 struct ieee80211_vif *vif,
3063 struct ieee80211_channel *channel,
d339d5ca
IP		 3064 int duration,
3065 enum ieee80211_roc_type type)
8ca151b5
JB		 3066{
3067 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 3068 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 3069 struct cfg80211_chan_def chandef;
31d385ae
IP		 3070 struct iwl_mvm_phy_ctxt *phy_ctxt;
3071 int ret, i;
3072
3073 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3074 duration, type);
8ca151b5 3075
a6cc5163
MG		 3076 mutex_lock(&mvm->mutex);
3077
b112889c
AM		 3078 switch (vif->type) {
3079 case NL80211_IFTYPE_STATION:
5ac6c72e
LC		 3080 if (mvm->fw->ucode_capa.capa[0] &
3081 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
3082 /* Use aux roc framework (HS20) */
3083 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3084 vif, duration);
3085 goto out_unlock;
3086 }
3087 IWL_ERR(mvm, "hotspot not supported\n");
3088 ret = -EINVAL;
a6cc5163 3089 goto out_unlock;
b112889c
AM		 3090 case NL80211_IFTYPE_P2P_DEVICE:
3091 /* handle below */
3092 break;
3093 default:
3094 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
a6cc5163
MG		 3095 ret = -EINVAL;
3096 goto out_unlock;
8ca151b5
JB		 3097 }
3098
31d385ae
IP		 3099 for (i = 0; i < NUM_PHY_CTX; i++) {
3100 phy_ctxt = &mvm->phy_ctxts[i];
3101 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3102 continue;
3103
3104 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3105 /*
3106 * Unbind the P2P_DEVICE from the current PHY context,
3107 * and if the PHY context is not used remove it.
3108 */
3109 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3110 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3111 goto out_unlock;
3112
3113 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3114
3115 /* Bind the P2P_DEVICE to the current PHY Context */
3116 mvmvif->phy_ctxt = phy_ctxt;
3117
3118 ret = iwl_mvm_binding_add_vif(mvm, vif);
3119 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3120 goto out_unlock;
3121
3122 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3123 goto schedule_time_event;
3124 }
3125 }
3126
3127 /* Need to update the PHY context only if the ROC channel changed */
3128 if (channel == mvmvif->phy_ctxt->channel)
3129 goto schedule_time_event;
3130
8ca151b5 3131 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 3132
31d385ae
IP		 3133 /*
3134 * Change the PHY context configuration as it is currently referenced
3135 * only by the P2P Device MAC
3136 */
3137 if (mvmvif->phy_ctxt->ref == 1) {
3138 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3139 &chandef, 1, 1);
3140 if (ret)
3141 goto out_unlock;
3142 } else {
3143 /*
3144 * The PHY context is shared with other MACs. Need to remove the
3145 * P2P Device from the binding, allocate an new PHY context and
3146 * create a new binding
3147 */
3148 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3149 if (!phy_ctxt) {
3150 ret = -ENOSPC;
3151 goto out_unlock;
3152 }
3153
3154 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3155 1, 1);
3156 if (ret) {
3157 IWL_ERR(mvm, "Failed to change PHY context\n");
3158 goto out_unlock;
3159 }
3160
3161 /* Unbind the P2P_DEVICE from the current PHY context */
3162 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3163 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3164 goto out_unlock;
3165
3166 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3167
3168 /* Bind the P2P_DEVICE to the new allocated PHY context */
3169 mvmvif->phy_ctxt = phy_ctxt;
3170
3171 ret = iwl_mvm_binding_add_vif(mvm, vif);
3172 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3173 goto out_unlock;
3174
3175 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3176 }
3177
3178schedule_time_event:
8ca151b5 3179 /* Schedule the time events */
e635c797 3180 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 3181
31d385ae 3182out_unlock:
8ca151b5
JB		 3183 mutex_unlock(&mvm->mutex);
3184 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 3185 return ret;
3186}
3187
3188static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3189{
3190 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3191
3192 IWL_DEBUG_MAC80211(mvm, "enter\n");
3193
3194 mutex_lock(&mvm->mutex);
bf5da87f 3195 iwl_mvm_stop_roc(mvm);
8ca151b5
JB		 3196 mutex_unlock(&mvm->mutex);
3197
3198 IWL_DEBUG_MAC80211(mvm, "leave\n");
3199 return 0;
3200}
3201
b08c1d97
LC		 3202static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3203 struct ieee80211_chanctx_conf *ctx)
8ca151b5 3204{
fe0f2de3
IP		 3205 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3206 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 3207 int ret;
3208
b08c1d97
LC		 3209 lockdep_assert_held(&mvm->mutex);
3210
53a9d61e 3211 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 3212
fe0f2de3
IP		 3213 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3214 if (!phy_ctxt) {
3215 ret = -ENOSPC;
3216 goto out;
3217 }
8ca151b5 3218
dcbc3e1a 3219 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
53a9d61e
IP		 3220 ctx->rx_chains_static,
3221 ctx->rx_chains_dynamic);
fe0f2de3
IP		 3222 if (ret) {
3223 IWL_ERR(mvm, "Failed to add PHY context\n");
3224 goto out;
3225 }
3226
53a9d61e 3227 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 3228 *phy_ctxt_id = phy_ctxt->id;
3229out:
b08c1d97
LC		 3230 return ret;
3231}
3232
3233static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3234 struct ieee80211_chanctx_conf *ctx)
3235{
3236 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3237 int ret;
3238
3239 mutex_lock(&mvm->mutex);
3240 ret = __iwl_mvm_add_chanctx(mvm, ctx);
8ca151b5 3241 mutex_unlock(&mvm->mutex);
b08c1d97 3242
8ca151b5
JB		 3243 return ret;
3244}
3245
b08c1d97
LC		 3246static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3247 struct ieee80211_chanctx_conf *ctx)
3248{
3249 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3250 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3251
3252 lockdep_assert_held(&mvm->mutex);
3253
3254 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3255}
3256
8ca151b5
JB		 3257static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3258 struct ieee80211_chanctx_conf *ctx)
3259{
3260 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 3261
3262 mutex_lock(&mvm->mutex);
b08c1d97 3263 __iwl_mvm_remove_chanctx(mvm, ctx);
8ca151b5
JB		 3264 mutex_unlock(&mvm->mutex);
3265}
3266
3267static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3268 struct ieee80211_chanctx_conf *ctx,
3269 u32 changed)
3270{
3271 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 3272 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3273 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 3274
31d385ae
IP		 3275 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3276 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3277 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2dceedae
AN		 3278 IEEE80211_CHANCTX_CHANGE_RADAR |
3279 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
31d385ae
IP		 3280 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3281 phy_ctxt->ref, changed))
3282 return;
3283
8ca151b5 3284 mutex_lock(&mvm->mutex);
4d66449a 3285 iwl_mvm_bt_coex_vif_change(mvm);
dcbc3e1a 3286 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
8ca151b5
JB		 3287 ctx->rx_chains_static,
3288 ctx->rx_chains_dynamic);
3289 mutex_unlock(&mvm->mutex);
3290}
3291
b08c1d97
LC		 3292static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3293 struct ieee80211_vif *vif,
f0c97783
LC		 3294 struct ieee80211_chanctx_conf *ctx,
3295 bool switching_chanctx)
8ca151b5 3296{
fe0f2de3
IP		 3297 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3298 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 3299 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3300 int ret;
3301
b08c1d97 3302 lockdep_assert_held(&mvm->mutex);
8ca151b5 3303
fe0f2de3 3304 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 3305
3306 switch (vif->type) {
3307 case NL80211_IFTYPE_AP:
4741dd04
LC		 3308 /* only needed if we're switching chanctx (i.e. during CSA) */
3309 if (switching_chanctx) {
bd3398e2
AO		 3310 mvmvif->ap_ibss_active = true;
3311 break;
3312 }
5023d966 3313 case NL80211_IFTYPE_ADHOC:
8ca151b5
JB		 3314 /*
3315 * The AP binding flow is handled as part of the start_ap flow
5023d966 3316 * (in bss_info_changed), similarly for IBSS.
8ca151b5
JB		 3317 */
3318 ret = 0;
b08c1d97 3319 goto out;
8ca151b5 3320 case NL80211_IFTYPE_STATION:
2533edce 3321 break;
8ca151b5 3322 case NL80211_IFTYPE_MONITOR:
2533edce
LC		 3323 /* always disable PS when a monitor interface is active */
3324 mvmvif->ps_disabled = true;
8ca151b5
JB		 3325 break;
3326 default:
3327 ret = -EINVAL;
b08c1d97 3328 goto out;
8ca151b5
JB		 3329 }
3330
3331 ret = iwl_mvm_binding_add_vif(mvm, vif);
3332 if (ret)
b08c1d97 3333 goto out;
8ca151b5
JB		 3334
3335 /*
92d85562
AB		 3336 * Power state must be updated before quotas,
3337 * otherwise fw will complain.
3338 */
999609f1 3339 iwl_mvm_power_update_mac(mvm);
92d85562
AB		 3340
3341 /* Setting the quota at this stage is only required for monitor
8ca151b5
JB		 3342 * interfaces. For the other types, the bss_info changed flow
3343 * will handle quota settings.
3344 */
3345 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 3346 mvmvif->monitor_active = true;
7754ae79 3347 ret = iwl_mvm_update_quotas(mvm, false, NULL);
8ca151b5
JB		 3348 if (ret)
3349 goto out_remove_binding;
3350 }
3351
bd3398e2 3352 /* Handle binding during CSA */
a57c688d 3353 if (vif->type == NL80211_IFTYPE_AP) {
7754ae79 3354 iwl_mvm_update_quotas(mvm, false, NULL);
3dfd3a97 3355 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
bd3398e2
AO		 3356 }
3357
4741dd04 3358 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
686e7fe1
LC		 3359 u32 duration = 2 * vif->bss_conf.beacon_int;
3360
3361 /* iwl_mvm_protect_session() reads directly from the
3362 * device (the system time), so make sure it is
3363 * available.
3364 */
3365 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3366 if (ret)
3367 goto out_remove_binding;
3368
3369 /* Protect the session to make sure we hear the first
3370 * beacon on the new channel.
3371 */
3372 iwl_mvm_protect_session(mvm, vif, duration, duration,
3373 vif->bss_conf.beacon_int / 2,
3374 true);
3375
3376 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3377
7754ae79 3378 iwl_mvm_update_quotas(mvm, false, NULL);
0ce04ce7
LC		 3379 }
3380
b08c1d97 3381 goto out;
8ca151b5 3382
b08c1d97 3383out_remove_binding:
8ca151b5 3384 iwl_mvm_binding_remove_vif(mvm, vif);
999609f1 3385 iwl_mvm_power_update_mac(mvm);
b08c1d97 3386out:
8ca151b5
JB		 3387 if (ret)
3388 mvmvif->phy_ctxt = NULL;
3389 return ret;
3390}
b08c1d97
LC		 3391static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3392 struct ieee80211_vif *vif,
3393 struct ieee80211_chanctx_conf *ctx)
8ca151b5
JB		 3394{
3395 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
b08c1d97 3396 int ret;
8ca151b5
JB		 3397
3398 mutex_lock(&mvm->mutex);
f0c97783 3399 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
b08c1d97
LC		 3400 mutex_unlock(&mvm->mutex);
3401
3402 return ret;
3403}
3404
3405static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3406 struct ieee80211_vif *vif,
f0c97783
LC		 3407 struct ieee80211_chanctx_conf *ctx,
3408 bool switching_chanctx)
b08c1d97
LC		 3409{
3410 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
f0c97783 3411 struct ieee80211_vif *disabled_vif = NULL;
b08c1d97
LC		 3412
3413 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 3414
3415 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3416
8ca151b5 3417 switch (vif->type) {
5023d966 3418 case NL80211_IFTYPE_ADHOC:
b08c1d97 3419 goto out;
8ca151b5 3420 case NL80211_IFTYPE_MONITOR:
1e1391ca 3421 mvmvif->monitor_active = false;
2533edce 3422 mvmvif->ps_disabled = false;
8ca151b5 3423 break;
bd3398e2
AO		 3424 case NL80211_IFTYPE_AP:
3425 /* This part is triggered only during CSA */
4741dd04 3426 if (!switching_chanctx || !mvmvif->ap_ibss_active)
b08c1d97 3427 goto out;
bd3398e2 3428
7ef0aab6
AO		 3429 mvmvif->csa_countdown = false;
3430
003e5236
AO		 3431 /* Set CS bit on all the stations */
3432 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3433
3434 /* Save blocked iface, the timeout is set on the next beacon */
3435 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3436
bd3398e2 3437 mvmvif->ap_ibss_active = false;
f0c97783
LC		 3438 break;
3439 case NL80211_IFTYPE_STATION:
3440 if (!switching_chanctx)
3441 break;
3442
3443 disabled_vif = vif;
3444
3dfd3a97 3445 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
f0c97783 3446 break;
8ca151b5
JB		 3447 default:
3448 break;
3449 }
3450
7754ae79 3451 iwl_mvm_update_quotas(mvm, false, disabled_vif);
1e1391ca 3452 iwl_mvm_binding_remove_vif(mvm, vif);
1c2abf72 3453
b08c1d97 3454out:
a11e144e 3455 mvmvif->phy_ctxt = NULL;
999609f1 3456 iwl_mvm_power_update_mac(mvm);
b08c1d97
LC		 3457}
3458
3459static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3460 struct ieee80211_vif *vif,
3461 struct ieee80211_chanctx_conf *ctx)
3462{
3463 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3464
3465 mutex_lock(&mvm->mutex);
f0c97783 3466 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
8ca151b5
JB		 3467 mutex_unlock(&mvm->mutex);
3468}
3469
50cc9574
LC		 3470static int
3471iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3472 struct ieee80211_vif_chanctx_switch *vifs)
b08c1d97 3473{
b08c1d97
LC		 3474 int ret;
3475
b08c1d97 3476 mutex_lock(&mvm->mutex);
f0c97783 3477 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
b08c1d97
LC		 3478 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3479
3480 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3481 if (ret) {
3482 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3483 goto out_reassign;
3484 }
3485
f0c97783
LC		 3486 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3487 true);
b08c1d97
LC		 3488 if (ret) {
3489 IWL_ERR(mvm,
3490 "failed to assign new_ctx during channel switch\n");
3491 goto out_remove;
3492 }
3493
f697267f
AN		 3494 /* we don't support TDLS during DCM - can be caused by channel switch */
3495 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3496 iwl_mvm_teardown_tdls_peers(mvm);
3497
b08c1d97
LC		 3498 goto out;
3499
3500out_remove:
3501 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3502
3503out_reassign:
6fd1fb63 3504 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
b08c1d97
LC		 3505 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3506 goto out_restart;
3507 }
3508
6fd1fb63
LC		 3509 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3510 true)) {
b08c1d97
LC		 3511 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3512 goto out_restart;
3513 }
3514
3515 goto out;
3516
3517out_restart:
3518 /* things keep failing, better restart the hw */
3519 iwl_mvm_nic_restart(mvm, false);
3520
3521out:
3522 mutex_unlock(&mvm->mutex);
50cc9574
LC		 3523
3524 return ret;
3525}
3526
48a256e8
LC		 3527static int
3528iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3529 struct ieee80211_vif_chanctx_switch *vifs)
3530{
3531 int ret;
3532
3533 mutex_lock(&mvm->mutex);
3534 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3535
3536 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3537 true);
3538 if (ret) {
3539 IWL_ERR(mvm,
3540 "failed to assign new_ctx during channel switch\n");
3541 goto out_reassign;
3542 }
3543
3544 goto out;
3545
3546out_reassign:
3547 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3548 true)) {
3549 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3550 goto out_restart;
3551 }
3552
3553 goto out;
3554
3555out_restart:
3556 /* things keep failing, better restart the hw */
3557 iwl_mvm_nic_restart(mvm, false);
3558
3559out:
3560 mutex_unlock(&mvm->mutex);
3561
3562 return ret;
3563}
3564
50cc9574
LC		 3565static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3566 struct ieee80211_vif_chanctx_switch *vifs,
3567 int n_vifs,
3568 enum ieee80211_chanctx_switch_mode mode)
3569{
3570 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3571 int ret;
3572
3573 /* we only support a single-vif right now */
3574 if (n_vifs > 1)
3575 return -EOPNOTSUPP;
3576
3577 switch (mode) {
3578 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3579 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3580 break;
3581 case CHANCTX_SWMODE_REASSIGN_VIF:
48a256e8 3582 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
50cc9574
LC		 3583 break;
3584 default:
3585 ret = -EOPNOTSUPP;
3586 break;
3587 }
3588
b08c1d97
LC		 3589 return ret;
3590}
3591
8ca151b5
JB		 3592static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3593 struct ieee80211_sta *sta,
3594 bool set)
3595{
3596 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
9d8ce6af 3597 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
8ca151b5
JB		 3598
3599 if (!mvm_sta || !mvm_sta->vif) {
3600 IWL_ERR(mvm, "Station is not associated to a vif\n");
3601 return -EINVAL;
3602 }
3603
3604 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3605}
3606
507cadf2
DS		 3607#ifdef CONFIG_NL80211_TESTMODE
3608static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3609 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3610 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
f6c6ad42 3611 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
507cadf2
DS		 3612};
3613
3614static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3615 struct ieee80211_vif *vif,
3616 void *data, int len)
3617{
3618 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3619 int err;
3620 u32 noa_duration;
3621
3622 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3623 if (err)
3624 return err;
3625
3626 if (!tb[IWL_MVM_TM_ATTR_CMD])
3627 return -EINVAL;
3628
3629 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3630 case IWL_MVM_TM_CMD_SET_NOA:
3631 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3632 !vif->bss_conf.enable_beacon ||
3633 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3634 return -EINVAL;
3635
3636 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3637 if (noa_duration >= vif->bss_conf.beacon_int)
3638 return -EINVAL;
3639
3640 mvm->noa_duration = noa_duration;
3641 mvm->noa_vif = vif;
3642
7754ae79 3643 return iwl_mvm_update_quotas(mvm, false, NULL);
f6c6ad42
JB		 3644 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3645 /* must be associated client vif - ignore authorized */
3646 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3647 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3648 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3649 return -EINVAL;
3650
3651 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
a1022927
EG		 3652 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3653 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
507cadf2
DS		 3654 }
3655
3656 return -EOPNOTSUPP;
3657}
3658
3659static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3660 struct ieee80211_vif *vif,
3661 void *data, int len)
3662{
3663 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3664 int err;
3665
3666 mutex_lock(&mvm->mutex);
3667 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3668 mutex_unlock(&mvm->mutex);
3669
3670 return err;
3671}
3672#endif
3673
622e3f9b
LC		 3674static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3675 struct ieee80211_vif *vif,
3676 struct ieee80211_channel_switch *chsw)
3677{
3678 /* By implementing this operation, we prevent mac80211 from
3679 * starting its own channel switch timer, so that we can call
3680 * ieee80211_chswitch_done() ourselves at the right time
3681 * (which is when the absence time event starts).
3682 */
3683
3684 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3685 "dummy channel switch op\n");
3686}
3687
f028905c
LC		 3688static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3689 struct ieee80211_vif *vif,
3690 struct ieee80211_channel_switch *chsw)
bd3398e2
AO		 3691{
3692 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
664322fa 3693 struct ieee80211_vif *csa_vif;
f6c34820 3694 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
dc88b4ba 3695 u32 apply_time;
f028905c 3696 int ret;
bd3398e2
AO		 3697
3698 mutex_lock(&mvm->mutex);
664322fa 3699
81d62d5a
JB		 3700 mvmvif->csa_failed = false;
3701
6b20d774 3702 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
f028905c 3703 chsw->chandef.center_freq1);
6b20d774 3704
f35d9c55
EG		 3705 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH,
3706 NULL, 0);
3707
6b20d774
LC		 3708 switch (vif->type) {
3709 case NL80211_IFTYPE_AP:
3710 csa_vif =
3711 rcu_dereference_protected(mvm->csa_vif,
3712 lockdep_is_held(&mvm->mutex));
3713 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3714 "Another CSA is already in progress")) {
3715 ret = -EBUSY;
3716 goto out_unlock;
3717 }
3718
3719 rcu_assign_pointer(mvm->csa_vif, vif);
7ef0aab6 3720
7ef0aab6
AO		 3721 if (WARN_ONCE(mvmvif->csa_countdown,
3722 "Previous CSA countdown didn't complete")) {
3723 ret = -EBUSY;
3724 goto out_unlock;
3725 }
3726
6b20d774 3727 break;
dc88b4ba 3728 case NL80211_IFTYPE_STATION:
4500e133
LC		 3729 /* Schedule the time event to a bit before beacon 1,
3730 * to make sure we're in the new channel when the
3731 * GO/AP arrives.
3732 */
3733 apply_time = chsw->device_timestamp +
3734 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3735 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
dc88b4ba
LC		 3736
3737 if (chsw->block_tx)
3738 iwl_mvm_csa_client_absent(mvm, vif);
3739
4500e133 3740 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
dc88b4ba 3741 apply_time);
c6e0a3e0
LC		 3742 if (mvmvif->bf_data.bf_enabled) {
3743 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3744 if (ret)
3745 goto out_unlock;
3746 }
3747
dc88b4ba 3748 break;
6b20d774
LC		 3749 default:
3750 break;
3751 }
bd3398e2 3752
f6c34820
LC		 3753 mvmvif->ps_disabled = true;
3754
3755 ret = iwl_mvm_power_update_ps(mvm);
3756 if (ret)
3757 goto out_unlock;
f028905c 3758
e198f5e7
AN		 3759 /* we won't be on this channel any longer */
3760 iwl_mvm_teardown_tdls_peers(mvm);
3761
bd3398e2
AO		 3762out_unlock:
3763 mutex_unlock(&mvm->mutex);
f028905c
LC		 3764
3765 return ret;
bd3398e2
AO		 3766}
3767
f6c34820
LC		 3768static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3769 struct ieee80211_vif *vif)
3770{
3771 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3772 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3773 int ret;
3774
3775 mutex_lock(&mvm->mutex);
3776
81d62d5a
JB		 3777 if (mvmvif->csa_failed) {
3778 mvmvif->csa_failed = false;
3779 ret = -EIO;
3780 goto out_unlock;
3781 }
3782
a57c688d
LC		 3783 if (vif->type == NL80211_IFTYPE_STATION) {
3784 struct iwl_mvm_sta *mvmsta;
3785
3786 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3787 mvmvif->ap_sta_id);
3788
3789 if (WARN_ON(!mvmsta)) {
3790 ret = -EIO;
3791 goto out_unlock;
3792 }
3793
3794 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3795
3796 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
c6e0a3e0
LC		 3797
3798 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3799 if (ret)
3800 goto out_unlock;
686e7fe1
LC		 3801
3802 iwl_mvm_stop_session_protection(mvm, vif);
a57c688d
LC		 3803 }
3804
f6c34820
LC		 3805 mvmvif->ps_disabled = false;
3806
3807 ret = iwl_mvm_power_update_ps(mvm);
3808
a57c688d 3809out_unlock:
f6c34820
LC		 3810 mutex_unlock(&mvm->mutex);
3811
3812 return ret;
3813}
3814
c5b0e7c0
EG		 3815static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3816 struct ieee80211_vif *vif, u32 queues, bool drop)
3817{
3818 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3819 struct iwl_mvm_vif *mvmvif;
3820 struct iwl_mvm_sta *mvmsta;
a0f6bf2a
AN		 3821 struct ieee80211_sta *sta;
3822 int i;
3823 u32 msk = 0;
c5b0e7c0
EG		 3824
3825 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3826 return;
3827
3828 mutex_lock(&mvm->mutex);
3829 mvmvif = iwl_mvm_vif_from_mac80211(vif);
c5b0e7c0 3830
a0f6bf2a
AN		 3831 /* flush the AP-station and all TDLS peers */
3832 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3833 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3834 lockdep_is_held(&mvm->mutex));
3835 if (IS_ERR_OR_NULL(sta))
3836 continue;
3837
3838 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3839 if (mvmsta->vif != vif)
3840 continue;
3841
3842 /* make sure only TDLS peers or the AP are flushed */
3843 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3844
3845 msk |= mvmsta->tfd_queue_msk;
480acbce 3846 }
c5b0e7c0 3847
6d440b25
EG		 3848 if (drop) {
3849 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3850 IWL_ERR(mvm, "flush request fail\n");
3851 mutex_unlock(&mvm->mutex);
3852 } else {
3853 mutex_unlock(&mvm->mutex);
4e6c48e0 3854
6d440b25
EG		 3855 /* this can take a while, and we may need/want other operations
3856 * to succeed while doing this, so do it without the mutex held
3857 */
3858 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3859 }
c5b0e7c0
EG		 3860}
3861
91a8bcde
JB		 3862static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3863 struct survey_info *survey)
3864{
3865 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3866 int ret;
3867
3868 memset(survey, 0, sizeof(*survey));
3869
3870 /* only support global statistics right now */
3871 if (idx != 0)
3872 return -ENOENT;
3873
3874 if (!(mvm->fw->ucode_capa.capa[0] &
3875 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3876 return -ENOENT;
3877
3878 mutex_lock(&mvm->mutex);
3879
3880 if (mvm->ucode_loaded) {
33cef925 3881 ret = iwl_mvm_request_statistics(mvm, false);
91a8bcde
JB		 3882 if (ret)
3883 goto out;
3884 }
3885
3886 survey->filled = SURVEY_INFO_TIME |
3887 SURVEY_INFO_TIME_RX |
3888 SURVEY_INFO_TIME_TX |
3889 SURVEY_INFO_TIME_SCAN;
3890 survey->time = mvm->accu_radio_stats.on_time_rf +
3891 mvm->radio_stats.on_time_rf;
3892 do_div(survey->time, USEC_PER_MSEC);
3893
3894 survey->time_rx = mvm->accu_radio_stats.rx_time +
3895 mvm->radio_stats.rx_time;
3896 do_div(survey->time_rx, USEC_PER_MSEC);
3897
3898 survey->time_tx = mvm->accu_radio_stats.tx_time +
3899 mvm->radio_stats.tx_time;
3900 do_div(survey->time_tx, USEC_PER_MSEC);
3901
3902 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3903 mvm->radio_stats.on_time_scan;
3904 do_div(survey->time_scan, USEC_PER_MSEC);
3905
3906 out:
3907 mutex_unlock(&mvm->mutex);
3908 return ret;
3909}
3910
33cef925
JB		 3911static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3912 struct ieee80211_vif *vif,
3913 struct ieee80211_sta *sta,
3914 struct station_info *sinfo)
3915{
3916 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3917 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3918 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3919
3920 if (!(mvm->fw->ucode_capa.capa[0] &
3921 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3922 return;
3923
3924 /* if beacon filtering isn't on mac80211 does it anyway */
3925 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3926 return;
3927
3928 if (!vif->bss_conf.assoc)
3929 return;
3930
3931 mutex_lock(&mvm->mutex);
3932
3933 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3934 goto unlock;
3935
3936 if (iwl_mvm_request_statistics(mvm, false))
3937 goto unlock;
3938
3939 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3940 mvmvif->beacon_stats.accu_num_beacons;
3941 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3942 if (mvmvif->beacon_stats.avg_signal) {
3943 /* firmware only reports a value after RXing a few beacons */
3944 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3945 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3946 }
3947 unlock:
3948 mutex_unlock(&mvm->mutex);
3949}
3950
e5209263 3951const struct ieee80211_ops iwl_mvm_hw_ops = {
8ca151b5
JB		 3952 .tx = iwl_mvm_mac_tx,
3953 .ampdu_action = iwl_mvm_mac_ampdu_action,
3954 .start = iwl_mvm_mac_start,
cf2c92d8 3955 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
8ca151b5
JB		 3956 .stop = iwl_mvm_mac_stop,
3957 .add_interface = iwl_mvm_mac_add_interface,
3958 .remove_interface = iwl_mvm_mac_remove_interface,
3959 .config = iwl_mvm_mac_config,
e59647ea 3960 .prepare_multicast = iwl_mvm_prepare_multicast,
8ca151b5
JB		 3961 .configure_filter = iwl_mvm_configure_filter,
3962 .bss_info_changed = iwl_mvm_bss_info_changed,
3963 .hw_scan = iwl_mvm_mac_hw_scan,
3964 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1ddbbb0c 3965 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
8ca151b5
JB		 3966 .sta_state = iwl_mvm_mac_sta_state,
3967 .sta_notify = iwl_mvm_mac_sta_notify,
3968 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3e56eadf 3969 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
8ca151b5 3970 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1f3b0ff8 3971 .sta_rc_update = iwl_mvm_sta_rc_update,
8ca151b5
JB		 3972 .conf_tx = iwl_mvm_mac_conf_tx,
3973 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
07ecd897 3974 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
c5b0e7c0 3975 .flush = iwl_mvm_mac_flush,
35a000b7
DS		 3976 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3977 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
8ca151b5
JB		 3978 .set_key = iwl_mvm_mac_set_key,
3979 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3980 .remain_on_channel = iwl_mvm_roc,
3981 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
8ca151b5
JB		 3982 .add_chanctx = iwl_mvm_add_chanctx,
3983 .remove_chanctx = iwl_mvm_remove_chanctx,
3984 .change_chanctx = iwl_mvm_change_chanctx,
3985 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3986 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
b08c1d97 3987 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
8ca151b5 3988
5023d966
JB		 3989 .start_ap = iwl_mvm_start_ap_ibss,
3990 .stop_ap = iwl_mvm_stop_ap_ibss,
3991 .join_ibss = iwl_mvm_start_ap_ibss,
3992 .leave_ibss = iwl_mvm_stop_ap_ibss,
8ca151b5
JB		 3993
3994 .set_tim = iwl_mvm_set_tim,
3995
622e3f9b 3996 .channel_switch = iwl_mvm_channel_switch,
f028905c 3997 .pre_channel_switch = iwl_mvm_pre_channel_switch,
f6c34820 3998 .post_channel_switch = iwl_mvm_post_channel_switch,
bd3398e2 3999
1d3c3f63
AN		 4000 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4001 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4002 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4003
507cadf2
DS		 4004 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4005
8ca151b5
JB		 4006#ifdef CONFIG_PM_SLEEP
4007 /* look at d3.c */
4008 .suspend = iwl_mvm_suspend,
4009 .resume = iwl_mvm_resume,
4010 .set_wakeup = iwl_mvm_set_wakeup,
4011 .set_rekey_data = iwl_mvm_set_rekey_data,
4012#if IS_ENABLED(CONFIG_IPV6)
4013 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4014#endif
4015 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4016#endif
91a8bcde 4017 .get_survey = iwl_mvm_mac_get_survey,
33cef925 4018 .sta_statistics = iwl_mvm_mac_sta_statistics,
8ca151b5 4019};
Linux kernel - Deliverables
This page took 0.414098 seconds and 5 git commands to generate.