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iwlwifi: mvm: add smem content to dump data
[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"
8ca151b5
JB		 89
90static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
91 {
92 .max = 1,
8eb38710 93 .types = BIT(NL80211_IFTYPE_STATION),
8ca151b5 94 },
3c15a0fb
JB		 95 {
96 .max = 1,
8eb38710
IP		 97 .types = BIT(NL80211_IFTYPE_AP) |
98 BIT(NL80211_IFTYPE_P2P_CLIENT) |
3c15a0fb
JB		 99 BIT(NL80211_IFTYPE_P2P_GO),
100 },
101 {
102 .max = 1,
103 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
104 },
8ca151b5
JB		 105};
106
107static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
108 {
109 .num_different_channels = 1,
110 .max_interfaces = 3,
111 .limits = iwl_mvm_limits,
112 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
113 },
114};
115
f0c2646a
JB		 116#ifdef CONFIG_PM_SLEEP
117static const struct nl80211_wowlan_tcp_data_token_feature
118iwl_mvm_wowlan_tcp_token_feature = {
119 .min_len = 0,
120 .max_len = 255,
121 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
122};
123
124static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
125 .tok = &iwl_mvm_wowlan_tcp_token_feature,
126 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
127 sizeof(struct ethhdr) -
128 sizeof(struct iphdr) -
129 sizeof(struct tcphdr),
130 .data_interval_max = 65535, /* __le16 in API */
131 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
132 sizeof(struct ethhdr) -
133 sizeof(struct iphdr) -
134 sizeof(struct tcphdr),
135 .seq = true,
136};
137#endif
138
77736923 139#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
2ee8f021
EP		 140/*
141 * Use the reserved field to indicate magic values.
142 * these values will only be used internally by the driver,
143 * and won't make it to the fw (reserved will be 0).
144 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
145 * be the vif's ip address. in case there is not a single
146 * ip address (0, or more than 1), this attribute will
147 * be skipped.
148 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
149 * the LSB bytes of the vif's mac address
150 */
151enum {
152 BC_FILTER_MAGIC_NONE = 0,
153 BC_FILTER_MAGIC_IP,
154 BC_FILTER_MAGIC_MAC,
155};
156
77736923
EP		 157static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
158 {
159 /* arp */
160 .discard = 0,
161 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
162 .attrs = {
163 {
164 /* frame type - arp, hw type - ethernet */
165 .offset_type =
166 BCAST_FILTER_OFFSET_PAYLOAD_START,
167 .offset = sizeof(rfc1042_header),
168 .val = cpu_to_be32(0x08060001),
169 .mask = cpu_to_be32(0xffffffff),
170 },
2ee8f021
EP		 171 {
172 /* arp dest ip */
173 .offset_type =
174 BCAST_FILTER_OFFSET_PAYLOAD_START,
175 .offset = sizeof(rfc1042_header) + 2 +
176 sizeof(struct arphdr) +
177 ETH_ALEN + sizeof(__be32) +
178 ETH_ALEN,
179 .mask = cpu_to_be32(0xffffffff),
180 /* mark it as special field */
181 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
182 },
183 },
184 },
185 {
186 /* dhcp offer bcast */
187 .discard = 0,
188 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
189 .attrs = {
190 {
191 /* udp dest port - 68 (bootp client)*/
192 .offset_type = BCAST_FILTER_OFFSET_IP_END,
193 .offset = offsetof(struct udphdr, dest),
194 .val = cpu_to_be32(0x00440000),
195 .mask = cpu_to_be32(0xffff0000),
196 },
197 {
198 /* dhcp - lsb bytes of client hw address */
199 .offset_type = BCAST_FILTER_OFFSET_IP_END,
200 .offset = 38,
201 .mask = cpu_to_be32(0xffffffff),
202 /* mark it as special field */
203 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
204 },
77736923
EP		 205 },
206 },
207 /* last filter must be empty */
208 {},
209};
210#endif
211
7498cf4c
EP		 212void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
213{
7bb426ea 214 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 215 return;
216
217 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
576eeee9
EP		 218 spin_lock_bh(&mvm->refs_lock);
219 mvm->refs[ref_type]++;
220 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 221 iwl_trans_ref(mvm->trans);
222}
223
224void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
225{
7bb426ea 226 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 227 return;
228
229 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
576eeee9
EP		 230 spin_lock_bh(&mvm->refs_lock);
231 WARN_ON(!mvm->refs[ref_type]--);
232 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 233 iwl_trans_unref(mvm->trans);
234}
235
576eeee9
EP		 236static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
237 enum iwl_mvm_ref_type except_ref)
7498cf4c 238{
576eeee9 239 int i, j;
7498cf4c 240
7bb426ea 241 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 242 return;
243
576eeee9
EP		 244 spin_lock_bh(&mvm->refs_lock);
245 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
246 if (except_ref == i || !mvm->refs[i])
7498cf4c
EP		 247 continue;
248
576eeee9
EP		 249 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
250 i, mvm->refs[i]);
251 for (j = 0; j < mvm->refs[i]; j++)
252 iwl_trans_unref(mvm->trans);
253 mvm->refs[i] = 0;
7498cf4c 254 }
576eeee9 255 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 256}
257
f4cf8680
EP		 258bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
259{
260 int i;
261 bool taken = false;
262
263 if (!iwl_mvm_is_d0i3_supported(mvm))
264 return true;
265
266 spin_lock_bh(&mvm->refs_lock);
267 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
268 if (mvm->refs[i]) {
269 taken = true;
270 break;
271 }
272 }
273 spin_unlock_bh(&mvm->refs_lock);
274
275 return taken;
276}
277
576eeee9 278int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
d40fc489
GG		 279{
280 iwl_mvm_ref(mvm, ref_type);
281
282 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
283 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
284 HZ)) {
285 WARN_ON_ONCE(1);
286 iwl_mvm_unref(mvm, ref_type);
287 return -EIO;
288 }
289
290 return 0;
291}
292
fe0f2de3
IP		 293static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
294{
295 int i;
296
297 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
298 for (i = 0; i < NUM_PHY_CTX; i++) {
299 mvm->phy_ctxts[i].id = i;
300 mvm->phy_ctxts[i].ref = 0;
301 }
302}
303
8ca151b5
JB		 304int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
305{
306 struct ieee80211_hw *hw = mvm->hw;
831e85f3 307 int num_mac, ret, i;
8ca151b5
JB		 308
309 /* Tell mac80211 our characteristics */
310 hw->flags = IEEE80211_HW_SIGNAL_DBM |
311 IEEE80211_HW_SPECTRUM_MGMT |
312 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
313 IEEE80211_HW_QUEUE_CONTROL |
314 IEEE80211_HW_WANT_MONITOR_VIF |
8ca151b5
JB		 315 IEEE80211_HW_SUPPORTS_PS |
316 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
d2931bbd 317 IEEE80211_HW_AMPDU_AGGREGATION |
d64048ed 318 IEEE80211_HW_TIMING_BEACON_ONLY |
147fc9be 319 IEEE80211_HW_CONNECTION_MONITOR |
b71d9c8a
IY		 320 IEEE80211_HW_CHANCTX_STA_CSA |
321 IEEE80211_HW_SUPPORTS_CLONED_SKBS;
8ca151b5 322
19e737c9 323 hw->queues = mvm->first_agg_queue;
398e8c6c 324 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
7b1dd048
EG		 325 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
326 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
339b3086
ES		 327 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
328 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
8ca151b5
JB		 329 hw->rate_control_algorithm = "iwl-mvm-rs";
330
331 /*
332 * Enable 11w if advertised by firmware and software crypto
333 * is not enabled (as the firmware will interpret some mgmt
334 * packets, so enabling it with software crypto isn't safe)
335 */
336 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
337 !iwlwifi_mod_params.sw_crypto)
338 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
339
1504f48d 340 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
1504f48d
MC		 341 !iwlwifi_mod_params.uapsd_disable) {
342 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
4cb832d5 343 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
1504f48d
MC		 344 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
345 }
e8e626ad 346
d2496221 347 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN ||
effd05ac 348 mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
fb98be5e 349 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
effd05ac
JB		 350 hw->wiphy->features |=
351 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
352 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
353 }
fb98be5e 354
8ca151b5
JB		 355 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
356 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
fe0f2de3 357 hw->chanctx_data_size = sizeof(u16);
8ca151b5
JB		 358
359 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3c15a0fb
JB		 360 BIT(NL80211_IFTYPE_P2P_CLIENT) |
361 BIT(NL80211_IFTYPE_AP) |
362 BIT(NL80211_IFTYPE_P2P_GO) |
c13b1725
EG		 363 BIT(NL80211_IFTYPE_P2P_DEVICE) |
364 BIT(NL80211_IFTYPE_ADHOC);
5023d966 365
a2f73b6c
LR		 366 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
367 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
368 REGULATORY_DISABLE_BEACON_HINTS;
8ca151b5 369
3e56eadf
JB		 370 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
371 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
372
94bbed72 373 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
bd3398e2 374
8ca151b5
JB		 375 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
376 hw->wiphy->n_iface_combinations =
377 ARRAY_SIZE(iwl_mvm_iface_combinations);
378
c451e6d4 379 hw->wiphy->max_remain_on_channel_duration = 10000;
8ca151b5 380 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
f1a68542
EG		 381 /* we can compensate an offset of up to 3 channels = 15 MHz */
382 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
8ca151b5
JB		 383
384 /* Extract MAC address */
385 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
386 hw->wiphy->addresses = mvm->addresses;
387 hw->wiphy->n_addresses = 1;
831e85f3
IP		 388
389 /* Extract additional MAC addresses if available */
390 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
391 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
392
393 for (i = 1; i < num_mac; i++) {
394 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
8ca151b5 395 ETH_ALEN);
831e85f3 396 mvm->addresses[i].addr[5]++;
8ca151b5
JB		 397 hw->wiphy->n_addresses++;
398 }
399
fe0f2de3
IP		 400 iwl_mvm_reset_phy_ctxts(mvm);
401
48849a41 402 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
20f1a5de 403
8ca151b5
JB		 404 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
405
406 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
407 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
408 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
409 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
410 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
411 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
412
413 hw->wiphy->hw_version = mvm->trans->hw_id;
414
ade50652 415 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
8ca151b5
JB		 416 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
417 else
418 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
419
6efaaf33
EG		 420 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
421 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
422 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
423 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
424 /* we create the 802.11 header and zero length SSID IE. */
425 hw->wiphy->max_sched_scan_ie_len =
426 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
427 }
35a000b7 428
8ca151b5 429 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
ab480030 430 NL80211_FEATURE_LOW_PRIORITY_SCAN |
0d8614b4
EP		 431 NL80211_FEATURE_P2P_GO_OPPPS |
432 NL80211_FEATURE_DYNAMIC_SMPS |
9b5452fd
EG		 433 NL80211_FEATURE_STATIC_SMPS |
434 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
8ca151b5 435
f1daa00e
AO		 436 if (mvm->fw->ucode_capa.capa[0] &
437 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
438 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
226bcd48
AK		 439 if (mvm->fw->ucode_capa.capa[0] &
440 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
441 hw->wiphy->features |= NL80211_FEATURE_QUIET;
f1daa00e 442
73897bd1
AO		 443 if (mvm->fw->ucode_capa.capa[0] &
444 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
445 hw->wiphy->features |=
446 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
447
448 if (mvm->fw->ucode_capa.capa[0] &
449 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
450 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
451
8ca151b5
JB		 452 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
453
e36e5433 454 /* currently FW API supports only one optional cipher scheme */
9ddca860 455 if (mvm->fw->cs[0].cipher) {
e36e5433 456 mvm->hw->n_cipher_schemes = 1;
9ddca860 457 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
e36e5433
MS		 458 }
459
8ca151b5 460#ifdef CONFIG_PM_SLEEP
d15a747f
EP		 461 if (iwl_mvm_is_d0i3_supported(mvm) &&
462 device_can_wakeup(mvm->trans->dev)) {
463 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
464 hw->wiphy->wowlan = &mvm->wowlan;
465 } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
8ca151b5
JB		 466 mvm->trans->ops->d3_suspend &&
467 mvm->trans->ops->d3_resume &&
468 device_can_wakeup(mvm->trans->dev)) {
964dc9e2
JB		 469 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
470 WIPHY_WOWLAN_DISCONNECT |
471 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
c55385f5
LC		 472 WIPHY_WOWLAN_RFKILL_RELEASE |
473 WIPHY_WOWLAN_NET_DETECT;
8ca151b5 474 if (!iwlwifi_mod_params.sw_crypto)
964dc9e2
JB		 475 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
476 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
477 WIPHY_WOWLAN_4WAY_HANDSHAKE;
478
479 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
480 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
481 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
c55385f5 482 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
964dc9e2
JB		 483 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
484 hw->wiphy->wowlan = &mvm->wowlan;
8ca151b5
JB		 485 }
486#endif
487
77736923
EP		 488#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
489 /* assign default bcast filtering configuration */
490 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
491#endif
492
8ca151b5
JB		 493 ret = iwl_mvm_leds_init(mvm);
494 if (ret)
495 return ret;
496
d8f1c515
AN		 497 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
498 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
499 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
500 }
501
1d3c3f63
AN		 502 if (mvm->fw->ucode_capa.capa[0] &
503 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
504 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
505 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
506 }
507
b7327d89
EG		 508 ret = ieee80211_register_hw(mvm->hw);
509 if (ret)
510 iwl_mvm_leds_exit(mvm);
511
512 return ret;
8ca151b5
JB		 513}
514
b2492501
AN		 515static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
516 struct ieee80211_sta *sta,
517 struct sk_buff *skb)
518{
519 struct iwl_mvm_sta *mvmsta;
520 bool defer = false;
521
522 /*
523 * double check the IN_D0I3 flag both before and after
524 * taking the spinlock, in order to prevent taking
525 * the spinlock when not needed.
526 */
527 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
528 return false;
529
530 spin_lock(&mvm->d0i3_tx_lock);
531 /*
532 * testing the flag again ensures the skb dequeue
533 * loop (on d0i3 exit) hasn't run yet.
534 */
535 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
536 goto out;
537
538 mvmsta = iwl_mvm_sta_from_mac80211(sta);
539 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
540 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
541 goto out;
542
543 __skb_queue_tail(&mvm->d0i3_tx, skb);
544 ieee80211_stop_queues(mvm->hw);
545
546 /* trigger wakeup */
547 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
548 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
549
550 defer = true;
551out:
552 spin_unlock(&mvm->d0i3_tx_lock);
553 return defer;
554}
555
8ca151b5
JB		 556static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
557 struct ieee80211_tx_control *control,
558 struct sk_buff *skb)
559{
560 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3e56eadf
JB		 561 struct ieee80211_sta *sta = control->sta;
562 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
563 struct ieee80211_hdr *hdr = (void *)skb->data;
8ca151b5 564
9ee718aa
EL		 565 if (iwl_mvm_is_radio_killed(mvm)) {
566 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
8ca151b5
JB		 567 goto drop;
568 }
569
398e8c6c 570 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
a6cc5163
MG		 571 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
572 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
8ca151b5
JB		 573 goto drop;
574
3e56eadf
JB		 575 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
576 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
577 ieee80211_is_mgmt(hdr->frame_control) &&
578 !ieee80211_is_deauth(hdr->frame_control) &&
579 !ieee80211_is_disassoc(hdr->frame_control) &&
580 !ieee80211_is_action(hdr->frame_control)))
581 sta = NULL;
582
583 if (sta) {
b2492501
AN		 584 if (iwl_mvm_defer_tx(mvm, sta, skb))
585 return;
3e56eadf 586 if (iwl_mvm_tx_skb(mvm, skb, sta))
8ca151b5
JB		 587 goto drop;
588 return;
589 }
590
591 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
592 goto drop;
593 return;
594 drop:
595 ieee80211_free_txskb(hw, skb);
596}
597
205e2210
EG		 598static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
599{
600 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
601 return false;
602 return true;
603}
604
605static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
606{
607 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
608 return false;
609 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
610 return true;
611
612 /* enabled by default */
613 return true;
614}
615
8ca151b5
JB		 616static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
617 struct ieee80211_vif *vif,
618 enum ieee80211_ampdu_mlme_action action,
619 struct ieee80211_sta *sta, u16 tid,
620 u16 *ssn, u8 buf_size)
621{
622 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
623 int ret;
b2492501 624 bool tx_agg_ref = false;
8ca151b5
JB		 625
626 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
627 sta->addr, tid, action);
628
629 if (!(mvm->nvm_data->sku_cap_11n_enable))
630 return -EACCES;
631
b2492501 632 /* return from D0i3 before starting a new Tx aggregation */
9256c205
EP		 633 switch (action) {
634 case IEEE80211_AMPDU_TX_START:
635 case IEEE80211_AMPDU_TX_STOP_CONT:
636 case IEEE80211_AMPDU_TX_STOP_FLUSH:
637 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
638 case IEEE80211_AMPDU_TX_OPERATIONAL:
b2492501 639 /*
9256c205
EP		 640 * for tx start, wait synchronously until D0i3 exit to
641 * get the correct sequence number for the tid.
642 * additionally, some other ampdu actions use direct
643 * target access, which is not handled automatically
644 * by the trans layer (unlike commands), so wait for
645 * d0i3 exit in these cases as well.
b2492501 646 */
d40fc489
GG		 647 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
648 if (ret)
649 return ret;
650
651 tx_agg_ref = true;
9256c205
EP		 652 break;
653 default:
654 break;
b2492501
AN		 655 }
656
8ca151b5
JB		 657 mutex_lock(&mvm->mutex);
658
659 switch (action) {
660 case IEEE80211_AMPDU_RX_START:
205e2210 661 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
8ca151b5
JB		 662 ret = -EINVAL;
663 break;
664 }
665 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
666 break;
667 case IEEE80211_AMPDU_RX_STOP:
668 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
669 break;
670 case IEEE80211_AMPDU_TX_START:
205e2210 671 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
5d158efa
EG		 672 ret = -EINVAL;
673 break;
674 }
8ca151b5
JB		 675 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
676 break;
677 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 678 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
679 break;
8ca151b5
JB		 680 case IEEE80211_AMPDU_TX_STOP_FLUSH:
681 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 682 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 683 break;
684 case IEEE80211_AMPDU_TX_OPERATIONAL:
685 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
686 break;
687 default:
688 WARN_ON_ONCE(1);
689 ret = -EINVAL;
690 break;
691 }
692 mutex_unlock(&mvm->mutex);
693
b2492501
AN		 694 /*
695 * If the tid is marked as started, we won't use it for offloaded
696 * traffic on the next D0i3 entry. It's safe to unref.
697 */
698 if (tx_agg_ref)
699 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
700
8ca151b5
JB		 701 return ret;
702}
703
704static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
705 struct ieee80211_vif *vif)
706{
707 struct iwl_mvm *mvm = data;
708 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
709
710 mvmvif->uploaded = false;
711 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
712
713 /* does this make sense at all? */
714 mvmvif->color++;
715
716 spin_lock_bh(&mvm->time_event_lock);
717 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
718 spin_unlock_bh(&mvm->time_event_lock);
719
fe0f2de3 720 mvmvif->phy_ctxt = NULL;
8a275bad 721 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
8ca151b5
JB		 722}
723
aadede6e
JB		 724static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
725 const void *data, size_t datalen)
726{
727 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
728 ssize_t bytes_read;
729 ssize_t bytes_read_trans;
730
731 if (offset < dump_ptrs->op_mode_len) {
732 bytes_read = min_t(ssize_t, count,
733 dump_ptrs->op_mode_len - offset);
734 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
735 bytes_read);
736 offset += bytes_read;
737 count -= bytes_read;
738
739 if (count == 0)
740 return bytes_read;
741 } else {
742 bytes_read = 0;
743 }
744
745 if (!dump_ptrs->trans_ptr)
746 return bytes_read;
747
748 offset -= dump_ptrs->op_mode_len;
749 bytes_read_trans = min_t(ssize_t, count,
750 dump_ptrs->trans_ptr->len - offset);
751 memcpy(buffer + bytes_read,
752 (u8 *)dump_ptrs->trans_ptr->data + offset,
753 bytes_read_trans);
754
755 return bytes_read + bytes_read_trans;
756}
757
758static void iwl_mvm_free_coredump(const void *data)
759{
760 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
761
762 vfree(fw_error_dump->op_mode_ptr);
763 vfree(fw_error_dump->trans_ptr);
764 kfree(fw_error_dump);
765}
766
4bfa47f3 767void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
655e6d6d
EG		 768{
769 struct iwl_fw_error_dump_file *dump_file;
770 struct iwl_fw_error_dump_data *dump_data;
771 struct iwl_fw_error_dump_info *dump_info;
48eb7b34 772 struct iwl_mvm_dump_ptrs *fw_error_dump;
655e6d6d
EG		 773 u32 sram_len, sram_ofs;
774 u32 file_len, rxf_len;
775 unsigned long flags;
655e6d6d 776 int reg_val;
addfaada 777 u32 smem_len = mvm->cfg->smem_len;
655e6d6d
EG		 778
779 lockdep_assert_held(&mvm->mutex);
780
addfaada
LK		 781 /* W/A for 8000 HW family A-step */
782 if (mvm->cfg->smem_len &&
783 mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
784 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_A_STEP)
785 smem_len = 0x38000;
786
aadede6e 787 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
48eb7b34
EG		 788 if (!fw_error_dump)
789 return;
790
f53bf4c7
LK		 791 /* SRAM - include stack CCM if driver knows the values for it */
792 if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
793 const struct fw_img *img;
794
795 img = &mvm->fw->img[mvm->cur_ucode];
796 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
797 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
798 } else {
799 sram_ofs = mvm->cfg->dccm_offset;
800 sram_len = mvm->cfg->dccm_len;
801 }
655e6d6d
EG		 802
803 /* reading buffer size */
804 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
805 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
806
807 /* the register holds the value divided by 128 */
808 rxf_len = rxf_len << 7;
809
810 file_len = sizeof(*dump_file) +
811 sizeof(*dump_data) * 3 +
812 sram_len +
813 rxf_len +
814 sizeof(*dump_info);
815
addfaada
LK		 816 /* Make room for the SMEM, if it exists */
817 if (smem_len)
818 file_len += sizeof(*dump_data) + smem_len;
819
5bfe6f53 820 dump_file = vzalloc(file_len);
48eb7b34
EG		 821 if (!dump_file) {
822 kfree(fw_error_dump);
655e6d6d 823 return;
48eb7b34 824 }
655e6d6d 825
48eb7b34 826 fw_error_dump->op_mode_ptr = dump_file;
655e6d6d
EG		 827
828 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
655e6d6d
EG		 829 dump_data = (void *)dump_file->data;
830
831 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
832 dump_data->len = cpu_to_le32(sizeof(*dump_info));
833 dump_info = (void *) dump_data->data;
834 dump_info->device_family =
835 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
836 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
837 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
435da2ce 838 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
655e6d6d
EG		 839 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
840 sizeof(dump_info->fw_human_readable));
841 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
842 sizeof(dump_info->dev_human_readable));
843 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
844 sizeof(dump_info->bus_human_readable));
845
846 dump_data = iwl_fw_error_next_data(dump_data);
847 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
848 dump_data->len = cpu_to_le32(rxf_len);
849
850 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
851 u32 *rxf = (void *)dump_data->data;
852 int i;
853
854 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
855 iwl_trans_write_prph(mvm->trans,
856 RXF_LD_FENCE_OFFSET_ADDR,
857 i * sizeof(u32));
858 rxf[i] = iwl_trans_read_prph(mvm->trans,
859 RXF_FIFO_RD_FENCE_ADDR);
860 }
861 iwl_trans_release_nic_access(mvm->trans, &flags);
862 }
863
864 dump_data = iwl_fw_error_next_data(dump_data);
865 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
866 dump_data->len = cpu_to_le32(sram_len);
867 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
868 sram_len);
869
addfaada
LK		 870 if (smem_len) {
871 dump_data = iwl_fw_error_next_data(dump_data);
872 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SMEM);
873 dump_data->len = cpu_to_le32(smem_len);
874 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
875 dump_data->data, smem_len);
876 }
877
48eb7b34
EG		 878 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
879 fw_error_dump->op_mode_len = file_len;
880 if (fw_error_dump->trans_ptr)
881 file_len += fw_error_dump->trans_ptr->len;
882 dump_file->file_len = cpu_to_le32(file_len);
4bfa47f3 883
aadede6e
JB		 884 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
885 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
655e6d6d 886}
655e6d6d 887
8ca151b5
JB		 888static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
889{
58629d9d
JB		 890 /* clear the D3 reconfig, we only need it to avoid dumping a
891 * firmware coredump on reconfiguration, we shouldn't do that
892 * on D3->D0 transition
893 */
894 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status))
895 iwl_mvm_fw_error_dump(mvm);
1bd3cbc1 896
8ca151b5 897 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 898
899 mvm->scan_status = IWL_MVM_SCAN_NONE;
b1873300 900 mvm->ps_disabled = false;
31b8b343 901 mvm->calibrating = false;
8ca151b5
JB		 902
903 /* just in case one was running */
904 ieee80211_remain_on_channel_expired(mvm->hw);
905
906 ieee80211_iterate_active_interfaces_atomic(
907 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
908 iwl_mvm_cleanup_iterator, mvm);
909
fe0f2de3 910 mvm->p2p_device_vif = NULL;
37577fe2 911 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
fe0f2de3
IP		 912
913 iwl_mvm_reset_phy_ctxts(mvm);
8ca151b5
JB		 914 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
915 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
a0f6bf2a 916 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
8a275bad
EG		 917 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
918 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
919 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
920 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
921 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
922 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
8ca151b5
JB		 923
924 ieee80211_wake_queues(mvm->hw);
925
7498cf4c
EP		 926 /* cleanup all stale references (scan, roc), but keep the
927 * ucode_down ref until reconfig is complete */
928 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
929
228670b2
EP		 930 /* clear any stale d0i3 state */
931 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
932
8ca151b5 933 mvm->vif_count = 0;
113a0447 934 mvm->rx_ba_sessions = 0;
8ca151b5
JB		 935}
936
a0a09243 937int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
8ca151b5 938{
8ca151b5
JB		 939 int ret;
940
a0a09243 941 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 942
943 /* Clean up some internal and mac80211 state on restart */
944 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
945 iwl_mvm_restart_cleanup(mvm);
946
947 ret = iwl_mvm_up(mvm);
c47af22a
JB		 948
949 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
950 /* Something went wrong - we need to finish some cleanup
951 * that normally iwl_mvm_mac_restart_complete() below
952 * would do.
953 */
954 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
955 iwl_mvm_d0i3_enable_tx(mvm, NULL);
956 }
957
a0a09243
LC		 958 return ret;
959}
960
961static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
962{
963 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
964 int ret;
965
966 mutex_lock(&mvm->mutex);
967 ret = __iwl_mvm_mac_start(mvm);
8ca151b5
JB		 968 mutex_unlock(&mvm->mutex);
969
970 return ret;
971}
972
cf2c92d8 973static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
8ca151b5 974{
8ca151b5
JB		 975 int ret;
976
977 mutex_lock(&mvm->mutex);
978
979 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
b2492501 980 iwl_mvm_d0i3_enable_tx(mvm, NULL);
0166230c 981 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 982 if (ret)
983 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
984 ret);
985
7498cf4c
EP		 986 /* allow transport/FW low power modes */
987 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
988
cbd2ae2d
AN		 989 /*
990 * If we have TDLS peers, remove them. We don't know the last seqno/PN
991 * of packets the FW sent out, so we must reconnect.
992 */
993 iwl_mvm_teardown_tdls_peers(mvm);
994
8ca151b5
JB		 995 mutex_unlock(&mvm->mutex);
996}
997
088070a2
EP		 998static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
999{
1000 bool exit_now;
1001
1002 if (!iwl_mvm_is_d0i3_supported(mvm))
1003 return;
1004
1005 mutex_lock(&mvm->d0i3_suspend_mutex);
1006 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1007 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1008 &mvm->d0i3_suspend_flags);
1009 mutex_unlock(&mvm->d0i3_suspend_mutex);
1010
1011 if (exit_now) {
1012 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1013 _iwl_mvm_exit_d0i3(mvm);
1014 }
1015}
1016
cf2c92d8
EP		 1017static void
1018iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1019 enum ieee80211_reconfig_type reconfig_type)
1020{
1021 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1022
1023 switch (reconfig_type) {
1024 case IEEE80211_RECONFIG_TYPE_RESTART:
1025 iwl_mvm_restart_complete(mvm);
1026 break;
1027 case IEEE80211_RECONFIG_TYPE_SUSPEND:
088070a2 1028 iwl_mvm_resume_complete(mvm);
cf2c92d8
EP		 1029 break;
1030 }
1031}
1032
a0a09243 1033void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
8ca151b5 1034{
a0a09243 1035 lockdep_assert_held(&mvm->mutex);
7498cf4c
EP		 1036
1037 /* disallow low power states when the FW is down */
1038 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1039
8ca151b5
JB		 1040 /* async_handlers_wk is now blocked */
1041
1042 /*
1043 * The work item could be running or queued if the
1044 * ROC time event stops just as we get here.
1045 */
1046 cancel_work_sync(&mvm->roc_done_wk);
1047
1048 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 1049
1050 iwl_mvm_async_handlers_purge(mvm);
1051 /* async_handlers_list is empty and will stay empty: HW is stopped */
1052
1053 /* the fw is stopped, the aux sta is dead: clean up driver state */
712b24ad 1054 iwl_mvm_del_aux_sta(mvm);
8ca151b5 1055
bc44886d 1056 mvm->ucode_loaded = false;
a0a09243 1057}
bc44886d 1058
a0a09243
LC		 1059static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1060{
1061 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1062
1063 flush_work(&mvm->d0i3_exit_work);
1064 flush_work(&mvm->async_handlers_wk);
4bfa47f3 1065 flush_work(&mvm->fw_error_dump_wk);
a0a09243
LC		 1066
1067 mutex_lock(&mvm->mutex);
1068 __iwl_mvm_mac_stop(mvm);
8ca151b5
JB		 1069 mutex_unlock(&mvm->mutex);
1070
1071 /*
1072 * The worker might have been waiting for the mutex, let it run and
1073 * discover that its list is now empty.
1074 */
1075 cancel_work_sync(&mvm->async_handlers_wk);
1076}
1077
fe0f2de3
IP		 1078static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1079{
1080 u16 i;
1081
1082 lockdep_assert_held(&mvm->mutex);
1083
1084 for (i = 0; i < NUM_PHY_CTX; i++)
1085 if (!mvm->phy_ctxts[i].ref)
1086 return &mvm->phy_ctxts[i];
1087
1088 IWL_ERR(mvm, "No available PHY context\n");
1089 return NULL;
1090}
1091
ee9c6cb0
EG		 1092static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1093 s8 tx_power)
1094{
1095 /* FW is in charge of regulatory enforcement */
1096 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1097 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1098 .pwr_restriction = cpu_to_le16(tx_power),
1099 };
1100
a1022927 1101 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
ee9c6cb0
EG		 1102 sizeof(reduce_txpwr_cmd),
1103 &reduce_txpwr_cmd);
1104}
1105
8ca151b5
JB		 1106static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1107 struct ieee80211_vif *vif)
1108{
1109 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1110 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1111 int ret;
1112
d40fc489
GG		 1113 /*
1114 * make sure D0i3 exit is completed, otherwise a target access
1115 * during tx queue configuration could be done when still in
1116 * D0i3 state.
1117 */
1118 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1119 if (ret)
1120 return ret;
1121
8ca151b5
JB		 1122 /*
1123 * Not much to do here. The stack will not allow interface
1124 * types or combinations that we didn't advertise, so we
1125 * don't really have to check the types.
1126 */
1127
1128 mutex_lock(&mvm->mutex);
1129
e89044d7 1130 /* Allocate resources for the MAC context, and add it to the fw */
8ca151b5
JB		 1131 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1132 if (ret)
1133 goto out_unlock;
1134
1c2abf72 1135 /* Counting number of interfaces is needed for legacy PM */
ea183d02
IP		 1136 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1137 mvm->vif_count++;
ea183d02 1138
8ca151b5
JB		 1139 /*
1140 * The AP binding flow can be done only after the beacon
1141 * template is configured (which happens only in the mac80211
1142 * start_ap() flow), and adding the broadcast station can happen
1143 * only after the binding.
1144 * In addition, since modifying the MAC before adding a bcast
1145 * station is not allowed by the FW, delay the adding of MAC context to
1146 * the point where we can also add the bcast station.
1147 * In short: there's not much we can do at this point, other than
1148 * allocating resources :)
1149 */
5023d966
JB		 1150 if (vif->type == NL80211_IFTYPE_AP ||
1151 vif->type == NL80211_IFTYPE_ADHOC) {
013290aa 1152 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1153 if (ret) {
1154 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1155 goto out_release;
1156 }
1157
77740cb4 1158 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1159 goto out_unlock;
1160 }
1161
8ca151b5
JB		 1162 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1163 if (ret)
1164 goto out_release;
1165
999609f1 1166 ret = iwl_mvm_power_update_mac(mvm);
e5e7aa8e
EG		 1167 if (ret)
1168 goto out_release;
8ca151b5 1169
7df15b1e 1170 /* beacon filtering */
a1022927 1171 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
bd3351ba
EP		 1172 if (ret)
1173 goto out_remove_mac;
1174
7df15b1e 1175 if (!mvm->bf_allowed_vif &&
73e5f2c5 1176 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
7df15b1e 1177 mvm->bf_allowed_vif = mvmvif;
a20fd398
AO		 1178 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1179 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
7df15b1e
HG		 1180 }
1181
8ca151b5
JB		 1182 /*
1183 * P2P_DEVICE interface does not have a channel context assigned to it,
1184 * so a dedicated PHY context is allocated to it and the corresponding
1185 * MAC context is bound to it at this stage.
1186 */
1187 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 1188
fe0f2de3
IP		 1189 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1190 if (!mvmvif->phy_ctxt) {
1191 ret = -ENOSPC;
bd3351ba 1192 goto out_free_bf;
fe0f2de3 1193 }
8ca151b5 1194
53a9d61e 1195 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1196 ret = iwl_mvm_binding_add_vif(mvm, vif);
1197 if (ret)
53a9d61e 1198 goto out_unref_phy;
8ca151b5 1199
013290aa 1200 ret = iwl_mvm_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1201 if (ret)
1202 goto out_unbind;
1203
1204 /* Save a pointer to p2p device vif, so it can later be used to
1205 * update the p2p device MAC when a GO is started/stopped */
1206 mvm->p2p_device_vif = vif;
1207 }
1208
63494374 1209 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1210 goto out_unlock;
1211
1212 out_unbind:
1213 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 1214 out_unref_phy:
fe0f2de3 1215 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
bd3351ba
EP		 1216 out_free_bf:
1217 if (mvm->bf_allowed_vif == mvmvif) {
1218 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1219 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1220 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
bd3351ba 1221 }
8ca151b5
JB		 1222 out_remove_mac:
1223 mvmvif->phy_ctxt = NULL;
1224 iwl_mvm_mac_ctxt_remove(mvm, vif);
1225 out_release:
5ee2b215
AB		 1226 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1227 mvm->vif_count--;
1c2abf72 1228
8ca151b5
JB		 1229 iwl_mvm_mac_ctxt_release(mvm, vif);
1230 out_unlock:
1231 mutex_unlock(&mvm->mutex);
1232
d40fc489
GG		 1233 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1234
8ca151b5
JB		 1235 return ret;
1236}
1237
38a12b5b
JB		 1238static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1239 struct ieee80211_vif *vif)
8ca151b5 1240{
d92b732e 1241 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
8ca151b5
JB		 1242
1243 if (tfd_msk) {
1244 mutex_lock(&mvm->mutex);
1245 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1246 mutex_unlock(&mvm->mutex);
1247 }
1248
1249 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1250 /*
1251 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1252 * We assume here that all the packets sent to the OFFCHANNEL
1253 * queue are sent in ROC session.
1254 */
1255 flush_work(&mvm->roc_done_wk);
1256 } else {
1257 /*
1258 * By now, all the AC queues are empty. The AGG queues are
1259 * empty too. We already got all the Tx responses for all the
1260 * packets in the queues. The drain work can have been
0742a75a 1261 * triggered. Flush it.
8ca151b5
JB		 1262 */
1263 flush_work(&mvm->sta_drained_wk);
1264 }
38a12b5b
JB		 1265}
1266
1267static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1268 struct ieee80211_vif *vif)
1269{
1270 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1271 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1272
1273 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 1274
1275 mutex_lock(&mvm->mutex);
1276
7df15b1e
HG		 1277 if (mvm->bf_allowed_vif == mvmvif) {
1278 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1279 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1280 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
7df15b1e
HG		 1281 }
1282
63494374
JB		 1283 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1284
8ca151b5
JB		 1285 /*
1286 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 1287 * interface is be handled as part of the stop_ap flow.
8ca151b5 1288 */
5023d966
JB		 1289 if (vif->type == NL80211_IFTYPE_AP ||
1290 vif->type == NL80211_IFTYPE_ADHOC) {
507cadf2
DS		 1291#ifdef CONFIG_NL80211_TESTMODE
1292 if (vif == mvm->noa_vif) {
1293 mvm->noa_vif = NULL;
1294 mvm->noa_duration = 0;
1295 }
1296#endif
013290aa 1297 iwl_mvm_dealloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1298 goto out_release;
1299 }
1300
1301 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1302 mvm->p2p_device_vif = NULL;
013290aa 1303 iwl_mvm_rm_bcast_sta(mvm, vif);
8ca151b5 1304 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 1305 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1306 mvmvif->phy_ctxt = NULL;
1307 }
1308
5ee2b215 1309 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5 1310 mvm->vif_count--;
1c2abf72 1311
999609f1 1312 iwl_mvm_power_update_mac(mvm);
8ca151b5
JB		 1313 iwl_mvm_mac_ctxt_remove(mvm, vif);
1314
1315out_release:
1316 iwl_mvm_mac_ctxt_release(mvm, vif);
1317 mutex_unlock(&mvm->mutex);
1318}
1319
1320static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
88f2fd73 1321{
8ca151b5
JB		 1322 return 0;
1323}
1324
e59647ea
EP		 1325struct iwl_mvm_mc_iter_data {
1326 struct iwl_mvm *mvm;
1327 int port_id;
1328};
1329
1330static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1331 struct ieee80211_vif *vif)
1332{
1333 struct iwl_mvm_mc_iter_data *data = _data;
1334 struct iwl_mvm *mvm = data->mvm;
1335 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1336 int ret, len;
1337
1338 /* if we don't have free ports, mcast frames will be dropped */
1339 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1340 return;
1341
1342 if (vif->type != NL80211_IFTYPE_STATION ||
1343 !vif->bss_conf.assoc)
1344 return;
1345
1346 cmd->port_id = data->port_id++;
1347 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1348 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1349
1c4abec0 1350 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
e59647ea
EP		 1351 if (ret)
1352 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1353}
1354
1355static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1356{
1357 struct iwl_mvm_mc_iter_data iter_data = {
1358 .mvm = mvm,
88f2fd73
MG		 1359 };
1360
e59647ea
EP		 1361 lockdep_assert_held(&mvm->mutex);
1362
1363 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1364 return;
1365
1c4abec0 1366 ieee80211_iterate_active_interfaces_atomic(
e59647ea
EP		 1367 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1368 iwl_mvm_mc_iface_iterator, &iter_data);
88f2fd73
MG		 1369}
1370
e59647ea
EP		 1371static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1372 struct netdev_hw_addr_list *mc_list)
8ca151b5 1373{
e59647ea
EP		 1374 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1375 struct iwl_mcast_filter_cmd *cmd;
1376 struct netdev_hw_addr *addr;
f3bd58f4
MS		 1377 int addr_count;
1378 bool pass_all;
e59647ea
EP		 1379 int len;
1380
f3bd58f4
MS		 1381 addr_count = netdev_hw_addr_list_count(mc_list);
1382 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1383 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1384 if (pass_all)
e59647ea 1385 addr_count = 0;
e59647ea
EP		 1386
1387 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1388 cmd = kzalloc(len, GFP_ATOMIC);
1389 if (!cmd)
1390 return 0;
1391
1392 if (pass_all) {
1393 cmd->pass_all = 1;
1394 return (u64)(unsigned long)cmd;
1395 }
1396
1397 netdev_hw_addr_list_for_each(addr, mc_list) {
1398 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1399 cmd->count, addr->addr);
1400 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1401 addr->addr, ETH_ALEN);
1402 cmd->count++;
1403 }
1404
1405 return (u64)(unsigned long)cmd;
8ca151b5
JB		 1406}
1407
1408static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1409 unsigned int changed_flags,
1410 unsigned int *total_flags,
1411 u64 multicast)
1412{
e59647ea
EP		 1413 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1414 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
8ca151b5 1415
e59647ea 1416 mutex_lock(&mvm->mutex);
51b6b9e0 1417
e59647ea
EP		 1418 /* replace previous configuration */
1419 kfree(mvm->mcast_filter_cmd);
1420 mvm->mcast_filter_cmd = cmd;
51b6b9e0 1421
e59647ea
EP		 1422 if (!cmd)
1423 goto out;
51b6b9e0 1424
e59647ea
EP		 1425 iwl_mvm_recalc_multicast(mvm);
1426out:
1427 mutex_unlock(&mvm->mutex);
1428 *total_flags = 0;
51b6b9e0
EG		 1429}
1430
c87163b9
EP		 1431#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1432struct iwl_bcast_iter_data {
1433 struct iwl_mvm *mvm;
1434 struct iwl_bcast_filter_cmd *cmd;
1435 u8 current_filter;
1436};
1437
1438static void
1439iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1440 const struct iwl_fw_bcast_filter *in_filter,
1441 struct iwl_fw_bcast_filter *out_filter)
1442{
1443 struct iwl_fw_bcast_filter_attr *attr;
1444 int i;
1445
1446 memcpy(out_filter, in_filter, sizeof(*out_filter));
1447
1448 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1449 attr = &out_filter->attrs[i];
1450
1451 if (!attr->mask)
1452 break;
1453
2ee8f021
EP		 1454 switch (attr->reserved1) {
1455 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1456 if (vif->bss_conf.arp_addr_cnt != 1) {
1457 attr->mask = 0;
1458 continue;
1459 }
1460
1461 attr->val = vif->bss_conf.arp_addr_list[0];
1462 break;
1463 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1464 attr->val = *(__be32 *)&vif->addr[2];
1465 break;
1466 default:
1467 break;
1468 }
1469 attr->reserved1 = 0;
c87163b9
EP		 1470 out_filter->num_attrs++;
1471 }
1472}
1473
1474static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1475 struct ieee80211_vif *vif)
1476{
1477 struct iwl_bcast_iter_data *data = _data;
1478 struct iwl_mvm *mvm = data->mvm;
1479 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1480 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1481 struct iwl_fw_bcast_mac *bcast_mac;
1482 int i;
1483
1484 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1485 return;
1486
1487 bcast_mac = &cmd->macs[mvmvif->id];
1488
e48393e8
IP		 1489 /*
1490 * enable filtering only for associated stations, but not for P2P
1491 * Clients
1492 */
1493 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1494 !vif->bss_conf.assoc)
c87163b9
EP		 1495 return;
1496
1497 bcast_mac->default_discard = 1;
1498
1499 /* copy all configured filters */
1500 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1501 /*
1502 * Make sure we don't exceed our filters limit.
1503 * if there is still a valid filter to be configured,
1504 * be on the safe side and just allow bcast for this mac.
1505 */
1506 if (WARN_ON_ONCE(data->current_filter >=
1507 ARRAY_SIZE(cmd->filters))) {
1508 bcast_mac->default_discard = 0;
1509 bcast_mac->attached_filters = 0;
1510 break;
1511 }
1512
1513 iwl_mvm_set_bcast_filter(vif,
1514 &mvm->bcast_filters[i],
1515 &cmd->filters[data->current_filter]);
1516
1517 /* skip current filter if it contains no attributes */
1518 if (!cmd->filters[data->current_filter].num_attrs)
1519 continue;
1520
1521 /* attach the filter to current mac */
1522 bcast_mac->attached_filters |=
1523 cpu_to_le16(BIT(data->current_filter));
1524
1525 data->current_filter++;
1526 }
1527}
1528
de06a59e
EP		 1529bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1530 struct iwl_bcast_filter_cmd *cmd)
c87163b9 1531{
c87163b9
EP		 1532 struct iwl_bcast_iter_data iter_data = {
1533 .mvm = mvm,
de06a59e 1534 .cmd = cmd,
c87163b9
EP		 1535 };
1536
3b8983b1
MS		 1537 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1538 return false;
1539
de06a59e
EP		 1540 memset(cmd, 0, sizeof(*cmd));
1541 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1542 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1543
1544#ifdef CONFIG_IWLWIFI_DEBUGFS
1545 /* use debugfs filters/macs if override is configured */
1546 if (mvm->dbgfs_bcast_filtering.override) {
1547 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1548 sizeof(cmd->filters));
1549 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1550 sizeof(cmd->macs));
1551 return true;
1552 }
1553#endif
c87163b9
EP		 1554
1555 /* if no filters are configured, do nothing */
1556 if (!mvm->bcast_filters)
de06a59e 1557 return false;
c87163b9
EP		 1558
1559 /* configure and attach these filters for each associated sta vif */
1560 ieee80211_iterate_active_interfaces(
1561 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1562 iwl_mvm_bcast_filter_iterator, &iter_data);
1563
de06a59e
EP		 1564 return true;
1565}
1566static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1567 struct ieee80211_vif *vif)
1568{
1569 struct iwl_bcast_filter_cmd cmd;
1570
1571 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1572 return 0;
1573
1574 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1575 return 0;
1576
a1022927 1577 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
c87163b9
EP		 1578 sizeof(cmd), &cmd);
1579}
1580#else
1581static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1582 struct ieee80211_vif *vif)
1583{
1584 return 0;
1585}
1586#endif
1587
8ca151b5
JB		 1588static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1589 struct ieee80211_vif *vif,
1590 struct ieee80211_bss_conf *bss_conf,
1591 u32 changes)
1592{
1593 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1594 int ret;
1595
6e97b0d2
IP		 1596 /*
1597 * Re-calculate the tsf id, as the master-slave relations depend on the
1598 * beacon interval, which was not known when the station interface was
1599 * added.
1600 */
1601 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1602 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1603
3dfd3a97
JB		 1604 /*
1605 * If we're not associated yet, take the (new) BSSID before associating
1606 * so the firmware knows. If we're already associated, then use the old
1607 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1608 * branch for disassociation below.
1609 */
1610 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1611 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1612
1613 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
8ca151b5
JB		 1614 if (ret)
1615 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1616
3dfd3a97
JB		 1617 /* after sending it once, adopt mac80211 data */
1618 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1619 mvmvif->associated = bss_conf->assoc;
1620
8ca151b5
JB		 1621 if (changes & BSS_CHANGED_ASSOC) {
1622 if (bss_conf->assoc) {
1623 /* add quota for this interface */
0166230c 1624 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1625 if (ret) {
1626 IWL_ERR(mvm, "failed to update quotas\n");
1627 return;
1628 }
016d27e1
JB		 1629
1630 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1631 &mvm->status)) {
1632 /*
1633 * If we're restarting then the firmware will
1634 * obviously have lost synchronisation with
1635 * the AP. It will attempt to synchronise by
1636 * itself, but we can make it more reliable by
1637 * scheduling a session protection time event.
1638 *
1639 * The firmware needs to receive a beacon to
1640 * catch up with synchronisation, use 110% of
1641 * the beacon interval.
1642 *
1643 * Set a large maximum delay to allow for more
1644 * than a single interface.
1645 */
1646 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1647 iwl_mvm_protect_session(mvm, vif, dur, dur,
d20d37bc 1648 5 * dur, false);
016d27e1 1649 }
1f3b0ff8
LE		 1650
1651 iwl_mvm_sf_update(mvm, vif, false);
175a70b7 1652 iwl_mvm_power_vif_assoc(mvm, vif);
697162a1 1653 if (vif->p2p) {
29a90a49 1654 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
697162a1
EG		 1655 iwl_mvm_update_smps(mvm, vif,
1656 IWL_MVM_SMPS_REQ_PROT,
1657 IEEE80211_SMPS_DYNAMIC);
1658 }
8ca151b5 1659 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1f3b0ff8
LE		 1660 /*
1661 * If update fails - SF might be running in associated
1662 * mode while disassociated - which is forbidden.
1663 */
1664 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1665 "Failed to update SF upon disassociation\n");
1666
8ca151b5
JB		 1667 /* remove AP station now that the MAC is unassoc */
1668 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1669 if (ret)
1670 IWL_ERR(mvm, "failed to remove AP station\n");
37577fe2
EP		 1671
1672 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1673 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
8ca151b5
JB		 1674 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1675 /* remove quota for this interface */
0166230c 1676 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1677 if (ret)
1678 IWL_ERR(mvm, "failed to update quotas\n");
29a90a49
EP		 1679
1680 if (vif->p2p)
1681 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
3dfd3a97
JB		 1682
1683 /* this will take the cleared BSSID from bss_conf */
1684 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1685 if (ret)
1686 IWL_ERR(mvm,
1687 "failed to update MAC %pM (clear after unassoc)\n",
1688 vif->addr);
8ca151b5 1689 }
a20fd398 1690
e59647ea 1691 iwl_mvm_recalc_multicast(mvm);
c87163b9 1692 iwl_mvm_configure_bcast_filter(mvm, vif);
e59647ea 1693
a20fd398
AO		 1694 /* reset rssi values */
1695 mvmvif->bf_data.ave_beacon_signal = 0;
1696
8e484f0b 1697 iwl_mvm_bt_coex_vif_change(mvm);
f94045ed
EG		 1698 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1699 IEEE80211_SMPS_AUTOMATIC);
989c6505 1700 } else if (changes & BSS_CHANGED_BEACON_INFO) {
210a544e
JB		 1701 /*
1702 * We received a beacon _after_ association so
1703 * remove the session protection.
1704 */
1705 iwl_mvm_remove_time_event(mvm, mvmvif,
1706 &mvmvif->time_event_data);
8ca151b5 1707 }
cc87d322
EH		 1708
1709 if (changes & BSS_CHANGED_BEACON_INFO) {
1710 iwl_mvm_sf_update(mvm, vif, false);
1711 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1712 }
1713
1bc10d3b
JB		 1714 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1715 ret = iwl_mvm_power_update_mac(mvm);
1716 if (ret)
1717 IWL_ERR(mvm, "failed to update power mode\n");
1718 }
1719
88f2fd73
MG		 1720 if (changes & BSS_CHANGED_TXPOWER) {
1721 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1722 bss_conf->txpower);
1723 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1724 }
a20fd398
AO		 1725
1726 if (changes & BSS_CHANGED_CQM) {
3c6acb61 1727 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
a20fd398
AO		 1728 /* reset cqm events tracking */
1729 mvmvif->bf_data.last_cqm_event = 0;
fa7b2e7f
AA		 1730 if (mvmvif->bf_data.bf_enabled) {
1731 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1732 if (ret)
1733 IWL_ERR(mvm,
1734 "failed to update CQM thresholds\n");
1735 }
a20fd398 1736 }
2ee8f021
EP		 1737
1738 if (changes & BSS_CHANGED_ARP_FILTER) {
3c6acb61 1739 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2ee8f021
EP		 1740 iwl_mvm_configure_bcast_filter(mvm, vif);
1741 }
8ca151b5
JB		 1742}
1743
5023d966
JB		 1744static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1745 struct ieee80211_vif *vif)
8ca151b5
JB		 1746{
1747 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1748 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1749 int ret;
1750
576eeee9
EP		 1751 /*
1752 * iwl_mvm_mac_ctxt_add() might read directly from the device
1753 * (the system time), so make sure it is available.
1754 */
1755 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1756 if (ret)
1757 return ret;
1758
8ca151b5
JB		 1759 mutex_lock(&mvm->mutex);
1760
1761 /* Send the beacon template */
1762 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1763 if (ret)
1764 goto out_unlock;
1765
6e97b0d2
IP		 1766 /*
1767 * Re-calculate the tsf id, as the master-slave relations depend on the
1768 * beacon interval, which was not known when the AP interface was added.
1769 */
1770 if (vif->type == NL80211_IFTYPE_AP)
1771 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1772
8ca151b5
JB		 1773 /* Add the mac context */
1774 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1775 if (ret)
1776 goto out_unlock;
1777
1778 /* Perform the binding */
1779 ret = iwl_mvm_binding_add_vif(mvm, vif);
1780 if (ret)
1781 goto out_remove;
1782
8ca151b5
JB		 1783 /* Send the bcast station. At this stage the TBTT and DTIM time events
1784 * are added and applied to the scheduler */
013290aa 1785 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1786 if (ret)
1787 goto out_unbind;
1788
5691e218
IP		 1789 /* must be set before quota calculations */
1790 mvmvif->ap_ibss_active = true;
1791
a11e144e 1792 /* power updated needs to be done before quotas */
999609f1 1793 iwl_mvm_power_update_mac(mvm);
a11e144e 1794
0166230c 1795 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5 1796 if (ret)
a11e144e 1797 goto out_quota_failed;
8ca151b5 1798
5023d966 1799 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1800 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 1801 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 1802
29a90a49
EP		 1803 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1804
8e484f0b 1805 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1806
f697267f
AN		 1807 /* we don't support TDLS during DCM */
1808 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1809 iwl_mvm_teardown_tdls_peers(mvm);
1810
8ca151b5
JB		 1811 mutex_unlock(&mvm->mutex);
1812 return 0;
1813
a11e144e 1814out_quota_failed:
999609f1 1815 iwl_mvm_power_update_mac(mvm);
5691e218 1816 mvmvif->ap_ibss_active = false;
013290aa 1817 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5
JB		 1818out_unbind:
1819 iwl_mvm_binding_remove_vif(mvm, vif);
1820out_remove:
1821 iwl_mvm_mac_ctxt_remove(mvm, vif);
1822out_unlock:
1823 mutex_unlock(&mvm->mutex);
576eeee9 1824 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
8ca151b5
JB		 1825 return ret;
1826}
1827
5023d966
JB		 1828static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1829 struct ieee80211_vif *vif)
8ca151b5
JB		 1830{
1831 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1832 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1833
38a12b5b
JB		 1834 iwl_mvm_prepare_mac_removal(mvm, vif);
1835
8ca151b5
JB		 1836 mutex_lock(&mvm->mutex);
1837
664322fa 1838 /* Handle AP stop while in CSA */
7f0a7c67
AO		 1839 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1840 iwl_mvm_remove_time_event(mvm, mvmvif,
1841 &mvmvif->time_event_data);
664322fa 1842 RCU_INIT_POINTER(mvm->csa_vif, NULL);
7f0a7c67 1843 }
664322fa 1844
003e5236
AO		 1845 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1846 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1847 mvm->csa_tx_block_bcn_timeout = 0;
1848 }
1849
5023d966 1850 mvmvif->ap_ibss_active = false;
1c87bbad 1851 mvm->ap_last_beacon_gp2 = 0;
8ca151b5 1852
8e484f0b 1853 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1854
29a90a49
EP		 1855 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1856
5023d966 1857 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1858 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 1859 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 1860
0166230c 1861 iwl_mvm_update_quotas(mvm, NULL);
013290aa 1862 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5 1863 iwl_mvm_binding_remove_vif(mvm, vif);
a11e144e 1864
999609f1 1865 iwl_mvm_power_update_mac(mvm);
a11e144e 1866
8ca151b5
JB		 1867 iwl_mvm_mac_ctxt_remove(mvm, vif);
1868
1869 mutex_unlock(&mvm->mutex);
1870}
1871
5023d966
JB		 1872static void
1873iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1874 struct ieee80211_vif *vif,
1875 struct ieee80211_bss_conf *bss_conf,
1876 u32 changes)
8ca151b5 1877{
be2056fc 1878 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8a5e3660 1879
be2056fc
IP		 1880 /* Changes will be applied when the AP/IBSS is started */
1881 if (!mvmvif->ap_ibss_active)
1882 return;
1883
863230da 1884 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
f7d8b702 1885 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
3dfd3a97 1886 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
863230da 1887 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
8a5e3660 1888
8ca151b5 1889 /* Need to send a new beacon template to the FW */
863230da
JB		 1890 if (changes & BSS_CHANGED_BEACON &&
1891 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1892 IWL_WARN(mvm, "Failed updating beacon data\n");
79b7a69d
HD		 1893
1894 if (changes & BSS_CHANGED_TXPOWER) {
1895 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1896 bss_conf->txpower);
1897 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1898 }
1899
8ca151b5
JB		 1900}
1901
1902static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1903 struct ieee80211_vif *vif,
1904 struct ieee80211_bss_conf *bss_conf,
1905 u32 changes)
1906{
1907 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1908
576eeee9
EP		 1909 /*
1910 * iwl_mvm_bss_info_changed_station() might call
1911 * iwl_mvm_protect_session(), which reads directly from
1912 * the device (the system time), so make sure it is available.
1913 */
1914 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1915 return;
1916
8ca151b5
JB		 1917 mutex_lock(&mvm->mutex);
1918
723f02ed 1919 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
fb98be5e 1920 iwl_mvm_scan_offload_stop(mvm, true);
723f02ed 1921
8ca151b5
JB		 1922 switch (vif->type) {
1923 case NL80211_IFTYPE_STATION:
1924 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1925 break;
1926 case NL80211_IFTYPE_AP:
5023d966
JB		 1927 case NL80211_IFTYPE_ADHOC:
1928 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
8ca151b5
JB		 1929 break;
1930 default:
1931 /* shouldn't happen */
1932 WARN_ON_ONCE(1);
1933 }
1934
1935 mutex_unlock(&mvm->mutex);
576eeee9 1936 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
8ca151b5
JB		 1937}
1938
4660dfbb
EP		 1939static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1940 enum iwl_scan_status scan_type)
1941{
1942 int ret;
1943 bool wait_for_handlers = false;
1944
1945 mutex_lock(&mvm->mutex);
1946
1947 if (mvm->scan_status != scan_type) {
1948 ret = 0;
1949 /* make sure there are no pending notifications */
1950 wait_for_handlers = true;
1951 goto out;
1952 }
1953
1954 switch (scan_type) {
1955 case IWL_MVM_SCAN_SCHED:
1956 ret = iwl_mvm_scan_offload_stop(mvm, true);
1957 break;
1958 case IWL_MVM_SCAN_OS:
1959 ret = iwl_mvm_cancel_scan(mvm);
1960 break;
1961 case IWL_MVM_SCAN_NONE:
1962 default:
1963 WARN_ON_ONCE(1);
1964 ret = -EINVAL;
1965 break;
1966 }
1967 if (ret)
1968 goto out;
1969
1970 wait_for_handlers = true;
1971out:
1972 mutex_unlock(&mvm->mutex);
1973
1974 /* make sure we consume the completion notification */
1975 if (wait_for_handlers)
1976 iwl_mvm_wait_for_async_handlers(mvm);
1977
1978 return ret;
1979}
8ca151b5
JB		 1980static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1981 struct ieee80211_vif *vif,
c56ef672 1982 struct ieee80211_scan_request *hw_req)
8ca151b5
JB		 1983{
1984 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
c56ef672 1985 struct cfg80211_scan_request *req = &hw_req->req;
8ca151b5
JB		 1986 int ret;
1987
762533ba
DS		 1988 if (req->n_channels == 0 ||
1989 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
8ca151b5
JB		 1990 return -EINVAL;
1991
d2496221
DS		 1992 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1993 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1994 if (ret)
1995 return ret;
1996 }
4660dfbb 1997
8ca151b5
JB		 1998 mutex_lock(&mvm->mutex);
1999
4660dfbb 2000 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
8ca151b5 2001 ret = -EBUSY;
519e2026
AN		 2002 goto out;
2003 }
8ca151b5 2004
519e2026
AN		 2005 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
2006
b975e55a 2007 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
d2496221 2008 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
b975e55a
DS		 2009 else if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
2010 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
fb98be5e
DS		 2011 else
2012 ret = iwl_mvm_scan_request(mvm, vif, req);
2013
519e2026
AN		 2014 if (ret)
2015 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
2016out:
8ca151b5 2017 mutex_unlock(&mvm->mutex);
8ca151b5
JB		 2018 return ret;
2019}
2020
2021static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2022 struct ieee80211_vif *vif)
2023{
2024 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2025
2026 mutex_lock(&mvm->mutex);
2027
2028 iwl_mvm_cancel_scan(mvm);
2029
2030 mutex_unlock(&mvm->mutex);
2031}
2032
2033static void
2034iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
3e56eadf 2035 struct ieee80211_sta *sta, u16 tids,
8ca151b5
JB		 2036 int num_frames,
2037 enum ieee80211_frame_release_type reason,
2038 bool more_data)
2039{
2040 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5 2041
3e56eadf 2042 /* Called when we need to transmit (a) frame(s) from mac80211 */
8ca151b5 2043
3e56eadf
JB		 2044 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2045 tids, more_data, false);
2046}
2047
2048static void
2049iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2050 struct ieee80211_sta *sta, u16 tids,
2051 int num_frames,
2052 enum ieee80211_frame_release_type reason,
2053 bool more_data)
2054{
2055 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2056
2057 /* Called when we need to transmit (a) frame(s) from agg queue */
2058
2059 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2060 tids, more_data, true);
8ca151b5
JB		 2061}
2062
2063static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2064 struct ieee80211_vif *vif,
2065 enum sta_notify_cmd cmd,
2066 struct ieee80211_sta *sta)
2067{
2068 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5b577a90 2069 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3e56eadf 2070 int tid;
8ca151b5
JB		 2071
2072 switch (cmd) {
2073 case STA_NOTIFY_SLEEP:
e3d4bc8c 2074 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5 2075 ieee80211_sta_block_awake(hw, sta, true);
3e56eadf
JB		 2076 spin_lock_bh(&mvmsta->lock);
2077 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2078 struct iwl_mvm_tid_data *tid_data;
2079
2080 tid_data = &mvmsta->tid_data[tid];
2081 if (tid_data->state != IWL_AGG_ON &&
2082 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2083 continue;
2084 if (iwl_mvm_tid_queued(tid_data) == 0)
2085 continue;
2086 ieee80211_sta_set_buffered(sta, tid, true);
2087 }
2088 spin_unlock_bh(&mvmsta->lock);
8ca151b5
JB		 2089 /*
2090 * The fw updates the STA to be asleep. Tx packets on the Tx
2091 * queues to this station will not be transmitted. The fw will
2092 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2093 */
2094 break;
2095 case STA_NOTIFY_AWAKE:
881acd89 2096 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
8ca151b5 2097 break;
9cc40712 2098 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 2099 break;
2100 default:
2101 break;
2102 }
2103}
2104
1ddbbb0c
JB		 2105static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2106 struct ieee80211_vif *vif,
2107 struct ieee80211_sta *sta)
2108{
2109 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2110 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2111
2112 /*
2113 * This is called before mac80211 does RCU synchronisation,
2114 * so here we already invalidate our internal RCU-protected
2115 * station pointer. The rest of the code will thus no longer
2116 * be able to find the station this way, and we don't rely
2117 * on further RCU synchronisation after the sta_state()
2118 * callback deleted the station.
2119 */
2120 mutex_lock(&mvm->mutex);
2121 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2122 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2123 ERR_PTR(-ENOENT));
2124 mutex_unlock(&mvm->mutex);
2125}
2126
8ca151b5
JB		 2127static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2128 struct ieee80211_vif *vif,
2129 struct ieee80211_sta *sta,
2130 enum ieee80211_sta_state old_state,
2131 enum ieee80211_sta_state new_state)
2132{
2133 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2134 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2135 int ret;
2136
2137 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2138 sta->addr, old_state, new_state);
2139
2140 /* this would be a mac80211 bug ... but don't crash */
2141 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2142 return -EINVAL;
2143
2144 /* if a STA is being removed, reuse its ID */
2145 flush_work(&mvm->sta_drained_wk);
2146
2147 mutex_lock(&mvm->mutex);
2148 if (old_state == IEEE80211_STA_NOTEXIST &&
2149 new_state == IEEE80211_STA_NONE) {
48bc1307
JB		 2150 /*
2151 * Firmware bug - it'll crash if the beacon interval is less
2152 * than 16. We can't avoid connecting at all, so refuse the
2153 * station state change, this will cause mac80211 to abandon
2154 * attempts to connect to this AP, and eventually wpa_s will
2155 * blacklist the AP...
2156 */
2157 if (vif->type == NL80211_IFTYPE_STATION &&
2158 vif->bss_conf.beacon_int < 16) {
2159 IWL_ERR(mvm,
2160 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2161 sta->addr, vif->bss_conf.beacon_int);
2162 ret = -EINVAL;
2163 goto out_unlock;
2164 }
cf7b491d
AN		 2165
2166 if (sta->tdls &&
2167 (vif->p2p ||
fa3d07e4
AN		 2168 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2169 IWL_MVM_TDLS_STA_COUNT ||
cf7b491d
AN		 2170 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2171 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2172 ret = -EBUSY;
2173 goto out_unlock;
2174 }
2175
8ca151b5 2176 ret = iwl_mvm_add_sta(mvm, vif, sta);
fa3d07e4
AN		 2177 if (sta->tdls && ret == 0)
2178 iwl_mvm_recalc_tdls_state(mvm, vif, true);
8ca151b5
JB		 2179 } else if (old_state == IEEE80211_STA_NONE &&
2180 new_state == IEEE80211_STA_AUTH) {
e820c2da
HD		 2181 /*
2182 * EBS may be disabled due to previous failures reported by FW.
2183 * Reset EBS status here assuming environment has been changed.
2184 */
2185 mvm->last_ebs_successful = true;
8ca151b5
JB		 2186 ret = 0;
2187 } else if (old_state == IEEE80211_STA_AUTH &&
2188 new_state == IEEE80211_STA_ASSOC) {
7a453973
JB		 2189 ret = iwl_mvm_update_sta(mvm, vif, sta);
2190 if (ret == 0)
2191 iwl_mvm_rs_rate_init(mvm, sta,
b87c2179
ES		 2192 mvmvif->phy_ctxt->channel->band,
2193 true);
8ca151b5
JB		 2194 } else if (old_state == IEEE80211_STA_ASSOC &&
2195 new_state == IEEE80211_STA_AUTHORIZED) {
f59e0e3c
AN		 2196
2197 /* we don't support TDLS during DCM */
2198 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2199 iwl_mvm_teardown_tdls_peers(mvm);
2200
7df15b1e 2201 /* enable beacon filtering */
fa7b2e7f 2202 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2203 ret = 0;
2204 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2205 new_state == IEEE80211_STA_ASSOC) {
7df15b1e 2206 /* disable beacon filtering */
a1022927 2207 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2208 ret = 0;
2209 } else if (old_state == IEEE80211_STA_ASSOC &&
2210 new_state == IEEE80211_STA_AUTH) {
2211 ret = 0;
2212 } else if (old_state == IEEE80211_STA_AUTH &&
2213 new_state == IEEE80211_STA_NONE) {
2214 ret = 0;
2215 } else if (old_state == IEEE80211_STA_NONE &&
2216 new_state == IEEE80211_STA_NOTEXIST) {
2217 ret = iwl_mvm_rm_sta(mvm, vif, sta);
fa3d07e4
AN		 2218 if (sta->tdls)
2219 iwl_mvm_recalc_tdls_state(mvm, vif, false);
8ca151b5
JB		 2220 } else {
2221 ret = -EIO;
2222 }
48bc1307 2223 out_unlock:
8ca151b5
JB		 2224 mutex_unlock(&mvm->mutex);
2225
9c126cd6
LK		 2226 if (sta->tdls && ret == 0) {
2227 if (old_state == IEEE80211_STA_NOTEXIST &&
2228 new_state == IEEE80211_STA_NONE)
2229 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2230 else if (old_state == IEEE80211_STA_NONE &&
2231 new_state == IEEE80211_STA_NOTEXIST)
2232 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2233 }
2234
8ca151b5
JB		 2235 return ret;
2236}
2237
2238static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2239{
2240 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2241
2242 mvm->rts_threshold = value;
2243
2244 return 0;
2245}
2246
1f3b0ff8
LE		 2247static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2248 struct ieee80211_vif *vif,
2249 struct ieee80211_sta *sta, u32 changed)
2250{
2251 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2252
2253 if (vif->type == NL80211_IFTYPE_STATION &&
2254 changed & IEEE80211_RC_NSS_CHANGED)
2255 iwl_mvm_sf_update(mvm, vif, false);
2256}
2257
8ca151b5
JB		 2258static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2259 struct ieee80211_vif *vif, u16 ac,
2260 const struct ieee80211_tx_queue_params *params)
2261{
2262 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2263 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2264
2265 mvmvif->queue_params[ac] = *params;
2266
2267 /*
2268 * No need to update right away, we'll get BSS_CHANGED_QOS
2269 * The exception is P2P_DEVICE interface which needs immediate update.
2270 */
2271 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2272 int ret;
2273
2274 mutex_lock(&mvm->mutex);
3dfd3a97 2275 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
8ca151b5
JB		 2276 mutex_unlock(&mvm->mutex);
2277 return ret;
2278 }
2279 return 0;
2280}
2281
2282static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2283 struct ieee80211_vif *vif)
2284{
2285 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2286 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2287 200 + vif->bss_conf.beacon_int);
2288 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2289 100 + vif->bss_conf.beacon_int);
2290
2291 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2292 return;
2293
576eeee9
EP		 2294 /*
2295 * iwl_mvm_protect_session() reads directly from the device
2296 * (the system time), so make sure it is available.
2297 */
2298 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2299 return;
2300
8ca151b5
JB		 2301 mutex_lock(&mvm->mutex);
2302 /* Try really hard to protect the session and hear a beacon */
d20d37bc 2303 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
8ca151b5 2304 mutex_unlock(&mvm->mutex);
576eeee9
EP		 2305
2306 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
8ca151b5
JB		 2307}
2308
35a000b7
DS		 2309static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2310 struct ieee80211_vif *vif,
2311 struct cfg80211_sched_scan_request *req,
633e2713 2312 struct ieee80211_scan_ies *ies)
35a000b7
DS		 2313{
2314 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2315 int ret;
2316
d2496221
DS		 2317 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2318 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2319 if (ret)
2320 return ret;
2321 }
4660dfbb 2322
35a000b7
DS		 2323 mutex_lock(&mvm->mutex);
2324
59ecb128
AB		 2325 /* Newest FW fixes sched scan while connected on another interface */
2326 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2327 if (!vif->bss_conf.idle) {
2328 ret = -EBUSY;
2329 goto out;
2330 }
2331 } else if (!iwl_mvm_is_idle(mvm)) {
bd5e4744
DS		 2332 ret = -EBUSY;
2333 goto out;
2334 }
2335
4660dfbb 2336 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
35a000b7
DS		 2337 ret = -EBUSY;
2338 goto out;
2339 }
2340
b141c235 2341 ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
35a000b7 2342 if (ret)
b141c235 2343 mvm->scan_status = IWL_MVM_SCAN_NONE;
d2496221 2344
35a000b7
DS		 2345out:
2346 mutex_unlock(&mvm->mutex);
2347 return ret;
2348}
2349
37e3308c
JB		 2350static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2351 struct ieee80211_vif *vif)
35a000b7
DS		 2352{
2353 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
33ea27f6 2354 int ret;
35a000b7
DS		 2355
2356 mutex_lock(&mvm->mutex);
fb98be5e 2357 ret = iwl_mvm_scan_offload_stop(mvm, false);
35a000b7 2358 mutex_unlock(&mvm->mutex);
33ea27f6 2359 iwl_mvm_wait_for_async_handlers(mvm);
37e3308c 2360
33ea27f6 2361 return ret;
d2496221 2362
35a000b7
DS		 2363}
2364
8ca151b5
JB		 2365static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2366 enum set_key_cmd cmd,
2367 struct ieee80211_vif *vif,
2368 struct ieee80211_sta *sta,
2369 struct ieee80211_key_conf *key)
2370{
2371 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2372 int ret;
2373
2374 if (iwlwifi_mod_params.sw_crypto) {
2375 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2376 return -EOPNOTSUPP;
2377 }
2378
2379 switch (key->cipher) {
2380 case WLAN_CIPHER_SUITE_TKIP:
2381 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2382 /* fall-through */
2383 case WLAN_CIPHER_SUITE_CCMP:
2384 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2385 break;
2386 case WLAN_CIPHER_SUITE_AES_CMAC:
2387 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2388 break;
2389 case WLAN_CIPHER_SUITE_WEP40:
2390 case WLAN_CIPHER_SUITE_WEP104:
ba3943b0
JB		 2391 /* For non-client mode, only use WEP keys for TX as we probably
2392 * don't have a station yet anyway and would then have to keep
2393 * track of the keys, linking them to each of the clients/peers
2394 * as they appear. For now, don't do that, for performance WEP
2395 * offload doesn't really matter much, but we need it for some
2396 * other offload features in client mode.
8ca151b5 2397 */
ba3943b0
JB		 2398 if (vif->type != NL80211_IFTYPE_STATION)
2399 return 0;
2400 break;
8ca151b5 2401 default:
e36e5433
MS		 2402 /* currently FW supports only one optional cipher scheme */
2403 if (hw->n_cipher_schemes &&
2404 hw->cipher_schemes->cipher == key->cipher)
2405 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2406 else
2407 return -EOPNOTSUPP;
8ca151b5
JB		 2408 }
2409
2410 mutex_lock(&mvm->mutex);
2411
2412 switch (cmd) {
2413 case SET_KEY:
5023d966
JB		 2414 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2415 vif->type == NL80211_IFTYPE_AP) && !sta) {
2416 /*
2417 * GTK on AP interface is a TX-only key, return 0;
2418 * on IBSS they're per-station and because we're lazy
2419 * we don't support them for RX, so do the same.
2420 */
6caffd4f
JB		 2421 ret = 0;
2422 key->hw_key_idx = STA_KEY_IDX_INVALID;
2423 break;
2424 }
2425
8ca151b5
JB		 2426 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2427 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2428 if (ret) {
2429 IWL_WARN(mvm, "set key failed\n");
2430 /*
2431 * can't add key for RX, but we don't need it
2432 * in the device for TX so still return 0
2433 */
6caffd4f 2434 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 2435 ret = 0;
2436 }
2437
2438 break;
2439 case DISABLE_KEY:
6caffd4f
JB		 2440 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2441 ret = 0;
2442 break;
2443 }
2444
8ca151b5
JB		 2445 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2446 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2447 break;
2448 default:
2449 ret = -EINVAL;
2450 }
2451
2452 mutex_unlock(&mvm->mutex);
2453 return ret;
2454}
2455
2456static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2457 struct ieee80211_vif *vif,
2458 struct ieee80211_key_conf *keyconf,
2459 struct ieee80211_sta *sta,
2460 u32 iv32, u16 *phase1key)
2461{
2462 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2463
5023d966
JB		 2464 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2465 return;
2466
8ca151b5
JB		 2467 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2468}
2469
2470
b112889c
AM		 2471static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2472 struct iwl_rx_packet *pkt, void *data)
2473{
2474 struct iwl_mvm *mvm =
2475 container_of(notif_wait, struct iwl_mvm, notif_wait);
2476 struct iwl_hs20_roc_res *resp;
2477 int resp_len = iwl_rx_packet_payload_len(pkt);
2478 struct iwl_mvm_time_event_data *te_data = data;
2479
2480 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2481 return true;
2482
2483 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2484 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2485 return true;
2486 }
2487
2488 resp = (void *)pkt->data;
2489
2490 IWL_DEBUG_TE(mvm,
2491 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2492 resp->status, resp->event_unique_id);
2493
2494 te_data->uid = le32_to_cpu(resp->event_unique_id);
2495 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2496 te_data->uid);
2497
2498 spin_lock_bh(&mvm->time_event_lock);
2499 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2500 spin_unlock_bh(&mvm->time_event_lock);
2501
2502 return true;
2503}
2504
2505#define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2506static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2507 struct ieee80211_channel *channel,
2508 struct ieee80211_vif *vif,
2509 int duration)
2510{
2511 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2512 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2513 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2514 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2515 struct iwl_notification_wait wait_time_event;
2516 struct iwl_hs20_roc_req aux_roc_req = {
2517 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2518 .id_and_color =
2519 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2520 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2521 /* Set the channel info data */
2522 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2523 PHY_BAND_24 : PHY_BAND_5,
2524 .channel_info.channel = channel->hw_value,
2525 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2526 /* Set the time and duration */
2527 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2528 .apply_time_max_delay =
2529 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2530 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2531 };
2532
2533 /* Set the node address */
2534 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2535
a6cc5163
MG		 2536 lockdep_assert_held(&mvm->mutex);
2537
2538 spin_lock_bh(&mvm->time_event_lock);
2539
2540 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2541 spin_unlock_bh(&mvm->time_event_lock);
2542 return -EIO;
2543 }
2544
b112889c
AM		 2545 te_data->vif = vif;
2546 te_data->duration = duration;
2547 te_data->id = HOT_SPOT_CMD;
2548
b112889c
AM		 2549 spin_unlock_bh(&mvm->time_event_lock);
2550
2551 /*
2552 * Use a notification wait, which really just processes the
2553 * command response and doesn't wait for anything, in order
2554 * to be able to process the response and get the UID inside
2555 * the RX path. Using CMD_WANT_SKB doesn't work because it
2556 * stores the buffer and then wakes up this thread, by which
2557 * time another notification (that the time event started)
2558 * might already be processed unsuccessfully.
2559 */
2560 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2561 time_event_response,
2562 ARRAY_SIZE(time_event_response),
2563 iwl_mvm_rx_aux_roc, te_data);
2564
2565 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2566 &aux_roc_req);
2567
2568 if (res) {
2569 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2570 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2571 goto out_clear_te;
2572 }
2573
2574 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2575 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2576 /* should never fail */
2577 WARN_ON_ONCE(res);
2578
2579 if (res) {
2580 out_clear_te:
2581 spin_lock_bh(&mvm->time_event_lock);
2582 iwl_mvm_te_clear_data(mvm, te_data);
2583 spin_unlock_bh(&mvm->time_event_lock);
2584 }
2585
2586 return res;
2587}
2588
8ca151b5
JB		 2589static int iwl_mvm_roc(struct ieee80211_hw *hw,
2590 struct ieee80211_vif *vif,
2591 struct ieee80211_channel *channel,
d339d5ca
IP		 2592 int duration,
2593 enum ieee80211_roc_type type)
8ca151b5
JB		 2594{
2595 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 2596 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 2597 struct cfg80211_chan_def chandef;
31d385ae
IP		 2598 struct iwl_mvm_phy_ctxt *phy_ctxt;
2599 int ret, i;
2600
2601 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2602 duration, type);
8ca151b5 2603
a6cc5163
MG		 2604 mutex_lock(&mvm->mutex);
2605
b112889c
AM		 2606 switch (vif->type) {
2607 case NL80211_IFTYPE_STATION:
5ac6c72e
LC		 2608 if (mvm->fw->ucode_capa.capa[0] &
2609 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
2610 /* Use aux roc framework (HS20) */
2611 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2612 vif, duration);
2613 goto out_unlock;
2614 }
2615 IWL_ERR(mvm, "hotspot not supported\n");
2616 ret = -EINVAL;
a6cc5163 2617 goto out_unlock;
b112889c
AM		 2618 case NL80211_IFTYPE_P2P_DEVICE:
2619 /* handle below */
2620 break;
2621 default:
2622 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
a6cc5163
MG		 2623 ret = -EINVAL;
2624 goto out_unlock;
8ca151b5
JB		 2625 }
2626
31d385ae
IP		 2627 for (i = 0; i < NUM_PHY_CTX; i++) {
2628 phy_ctxt = &mvm->phy_ctxts[i];
2629 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2630 continue;
2631
2632 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2633 /*
2634 * Unbind the P2P_DEVICE from the current PHY context,
2635 * and if the PHY context is not used remove it.
2636 */
2637 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2638 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2639 goto out_unlock;
2640
2641 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2642
2643 /* Bind the P2P_DEVICE to the current PHY Context */
2644 mvmvif->phy_ctxt = phy_ctxt;
2645
2646 ret = iwl_mvm_binding_add_vif(mvm, vif);
2647 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2648 goto out_unlock;
2649
2650 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2651 goto schedule_time_event;
2652 }
2653 }
2654
2655 /* Need to update the PHY context only if the ROC channel changed */
2656 if (channel == mvmvif->phy_ctxt->channel)
2657 goto schedule_time_event;
2658
8ca151b5 2659 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 2660
31d385ae
IP		 2661 /*
2662 * Change the PHY context configuration as it is currently referenced
2663 * only by the P2P Device MAC
2664 */
2665 if (mvmvif->phy_ctxt->ref == 1) {
2666 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2667 &chandef, 1, 1);
2668 if (ret)
2669 goto out_unlock;
2670 } else {
2671 /*
2672 * The PHY context is shared with other MACs. Need to remove the
2673 * P2P Device from the binding, allocate an new PHY context and
2674 * create a new binding
2675 */
2676 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2677 if (!phy_ctxt) {
2678 ret = -ENOSPC;
2679 goto out_unlock;
2680 }
2681
2682 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2683 1, 1);
2684 if (ret) {
2685 IWL_ERR(mvm, "Failed to change PHY context\n");
2686 goto out_unlock;
2687 }
2688
2689 /* Unbind the P2P_DEVICE from the current PHY context */
2690 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2691 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2692 goto out_unlock;
2693
2694 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2695
2696 /* Bind the P2P_DEVICE to the new allocated PHY context */
2697 mvmvif->phy_ctxt = phy_ctxt;
2698
2699 ret = iwl_mvm_binding_add_vif(mvm, vif);
2700 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2701 goto out_unlock;
2702
2703 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2704 }
2705
2706schedule_time_event:
8ca151b5 2707 /* Schedule the time events */
e635c797 2708 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 2709
31d385ae 2710out_unlock:
8ca151b5
JB		 2711 mutex_unlock(&mvm->mutex);
2712 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 2713 return ret;
2714}
2715
2716static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2717{
2718 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2719
2720 IWL_DEBUG_MAC80211(mvm, "enter\n");
2721
2722 mutex_lock(&mvm->mutex);
bf5da87f 2723 iwl_mvm_stop_roc(mvm);
8ca151b5
JB		 2724 mutex_unlock(&mvm->mutex);
2725
2726 IWL_DEBUG_MAC80211(mvm, "leave\n");
2727 return 0;
2728}
2729
b08c1d97
LC		 2730static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2731 struct ieee80211_chanctx_conf *ctx)
8ca151b5 2732{
fe0f2de3
IP		 2733 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2734 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 2735 int ret;
2736
b08c1d97
LC		 2737 lockdep_assert_held(&mvm->mutex);
2738
53a9d61e 2739 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 2740
fe0f2de3
IP		 2741 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2742 if (!phy_ctxt) {
2743 ret = -ENOSPC;
2744 goto out;
2745 }
8ca151b5 2746
dcbc3e1a 2747 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
53a9d61e
IP		 2748 ctx->rx_chains_static,
2749 ctx->rx_chains_dynamic);
fe0f2de3
IP		 2750 if (ret) {
2751 IWL_ERR(mvm, "Failed to add PHY context\n");
2752 goto out;
2753 }
2754
53a9d61e 2755 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 2756 *phy_ctxt_id = phy_ctxt->id;
2757out:
b08c1d97
LC		 2758 return ret;
2759}
2760
2761static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2762 struct ieee80211_chanctx_conf *ctx)
2763{
2764 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2765 int ret;
2766
2767 mutex_lock(&mvm->mutex);
2768 ret = __iwl_mvm_add_chanctx(mvm, ctx);
8ca151b5 2769 mutex_unlock(&mvm->mutex);
b08c1d97 2770
8ca151b5
JB		 2771 return ret;
2772}
2773
b08c1d97
LC		 2774static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2775 struct ieee80211_chanctx_conf *ctx)
2776{
2777 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2778 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2779
2780 lockdep_assert_held(&mvm->mutex);
2781
2782 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2783}
2784
8ca151b5
JB		 2785static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2786 struct ieee80211_chanctx_conf *ctx)
2787{
2788 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 2789
2790 mutex_lock(&mvm->mutex);
b08c1d97 2791 __iwl_mvm_remove_chanctx(mvm, ctx);
8ca151b5
JB		 2792 mutex_unlock(&mvm->mutex);
2793}
2794
2795static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2796 struct ieee80211_chanctx_conf *ctx,
2797 u32 changed)
2798{
2799 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 2800 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2801 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 2802
31d385ae
IP		 2803 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2804 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2805 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2dceedae
AN		 2806 IEEE80211_CHANCTX_CHANGE_RADAR |
2807 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
31d385ae
IP		 2808 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2809 phy_ctxt->ref, changed))
2810 return;
2811
8ca151b5 2812 mutex_lock(&mvm->mutex);
4d66449a 2813 iwl_mvm_bt_coex_vif_change(mvm);
dcbc3e1a 2814 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
8ca151b5
JB		 2815 ctx->rx_chains_static,
2816 ctx->rx_chains_dynamic);
2817 mutex_unlock(&mvm->mutex);
2818}
2819
b08c1d97
LC		 2820static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2821 struct ieee80211_vif *vif,
f0c97783
LC		 2822 struct ieee80211_chanctx_conf *ctx,
2823 bool switching_chanctx)
8ca151b5 2824{
fe0f2de3
IP		 2825 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2826 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 2827 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2828 int ret;
2829
b08c1d97 2830 lockdep_assert_held(&mvm->mutex);
8ca151b5 2831
fe0f2de3 2832 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 2833
2834 switch (vif->type) {
2835 case NL80211_IFTYPE_AP:
4741dd04
LC		 2836 /* only needed if we're switching chanctx (i.e. during CSA) */
2837 if (switching_chanctx) {
bd3398e2
AO		 2838 mvmvif->ap_ibss_active = true;
2839 break;
2840 }
5023d966 2841 case NL80211_IFTYPE_ADHOC:
8ca151b5
JB		 2842 /*
2843 * The AP binding flow is handled as part of the start_ap flow
5023d966 2844 * (in bss_info_changed), similarly for IBSS.
8ca151b5
JB		 2845 */
2846 ret = 0;
b08c1d97 2847 goto out;
8ca151b5 2848 case NL80211_IFTYPE_STATION:
2533edce 2849 break;
8ca151b5 2850 case NL80211_IFTYPE_MONITOR:
2533edce
LC		 2851 /* always disable PS when a monitor interface is active */
2852 mvmvif->ps_disabled = true;
8ca151b5
JB		 2853 break;
2854 default:
2855 ret = -EINVAL;
b08c1d97 2856 goto out;
8ca151b5
JB		 2857 }
2858
2859 ret = iwl_mvm_binding_add_vif(mvm, vif);
2860 if (ret)
b08c1d97 2861 goto out;
8ca151b5
JB		 2862
2863 /*
92d85562
AB		 2864 * Power state must be updated before quotas,
2865 * otherwise fw will complain.
2866 */
999609f1 2867 iwl_mvm_power_update_mac(mvm);
92d85562
AB		 2868
2869 /* Setting the quota at this stage is only required for monitor
8ca151b5
JB		 2870 * interfaces. For the other types, the bss_info changed flow
2871 * will handle quota settings.
2872 */
2873 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 2874 mvmvif->monitor_active = true;
0166230c 2875 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 2876 if (ret)
2877 goto out_remove_binding;
2878 }
2879
bd3398e2 2880 /* Handle binding during CSA */
a57c688d 2881 if (vif->type == NL80211_IFTYPE_AP) {
0166230c 2882 iwl_mvm_update_quotas(mvm, NULL);
3dfd3a97 2883 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
bd3398e2
AO		 2884 }
2885
4741dd04 2886 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
686e7fe1
LC		 2887 u32 duration = 2 * vif->bss_conf.beacon_int;
2888
2889 /* iwl_mvm_protect_session() reads directly from the
2890 * device (the system time), so make sure it is
2891 * available.
2892 */
2893 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
2894 if (ret)
2895 goto out_remove_binding;
2896
2897 /* Protect the session to make sure we hear the first
2898 * beacon on the new channel.
2899 */
2900 iwl_mvm_protect_session(mvm, vif, duration, duration,
2901 vif->bss_conf.beacon_int / 2,
2902 true);
2903
2904 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
2905
a57c688d 2906 iwl_mvm_update_quotas(mvm, NULL);
0ce04ce7
LC		 2907 }
2908
b08c1d97 2909 goto out;
8ca151b5 2910
b08c1d97 2911out_remove_binding:
8ca151b5 2912 iwl_mvm_binding_remove_vif(mvm, vif);
999609f1 2913 iwl_mvm_power_update_mac(mvm);
b08c1d97 2914out:
8ca151b5
JB		 2915 if (ret)
2916 mvmvif->phy_ctxt = NULL;
2917 return ret;
2918}
b08c1d97
LC		 2919static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2920 struct ieee80211_vif *vif,
2921 struct ieee80211_chanctx_conf *ctx)
8ca151b5
JB		 2922{
2923 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
b08c1d97 2924 int ret;
8ca151b5
JB		 2925
2926 mutex_lock(&mvm->mutex);
f0c97783 2927 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
b08c1d97
LC		 2928 mutex_unlock(&mvm->mutex);
2929
2930 return ret;
2931}
2932
2933static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2934 struct ieee80211_vif *vif,
f0c97783
LC		 2935 struct ieee80211_chanctx_conf *ctx,
2936 bool switching_chanctx)
b08c1d97
LC		 2937{
2938 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
f0c97783 2939 struct ieee80211_vif *disabled_vif = NULL;
b08c1d97
LC		 2940
2941 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 2942
2943 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2944
8ca151b5 2945 switch (vif->type) {
5023d966 2946 case NL80211_IFTYPE_ADHOC:
b08c1d97 2947 goto out;
8ca151b5 2948 case NL80211_IFTYPE_MONITOR:
1e1391ca 2949 mvmvif->monitor_active = false;
2533edce 2950 mvmvif->ps_disabled = false;
8ca151b5 2951 break;
bd3398e2
AO		 2952 case NL80211_IFTYPE_AP:
2953 /* This part is triggered only during CSA */
4741dd04 2954 if (!switching_chanctx || !mvmvif->ap_ibss_active)
b08c1d97 2955 goto out;
bd3398e2 2956
7ef0aab6
AO		 2957 mvmvif->csa_countdown = false;
2958
003e5236
AO		 2959 /* Set CS bit on all the stations */
2960 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2961
2962 /* Save blocked iface, the timeout is set on the next beacon */
2963 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2964
bd3398e2 2965 mvmvif->ap_ibss_active = false;
f0c97783
LC		 2966 break;
2967 case NL80211_IFTYPE_STATION:
2968 if (!switching_chanctx)
2969 break;
2970
2971 disabled_vif = vif;
2972
3dfd3a97 2973 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
f0c97783 2974 break;
8ca151b5
JB		 2975 default:
2976 break;
2977 }
2978
f0c97783 2979 iwl_mvm_update_quotas(mvm, disabled_vif);
1e1391ca 2980 iwl_mvm_binding_remove_vif(mvm, vif);
1c2abf72 2981
b08c1d97 2982out:
a11e144e 2983 mvmvif->phy_ctxt = NULL;
999609f1 2984 iwl_mvm_power_update_mac(mvm);
b08c1d97
LC		 2985}
2986
2987static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2988 struct ieee80211_vif *vif,
2989 struct ieee80211_chanctx_conf *ctx)
2990{
2991 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2992
2993 mutex_lock(&mvm->mutex);
f0c97783 2994 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
8ca151b5
JB		 2995 mutex_unlock(&mvm->mutex);
2996}
2997
50cc9574
LC		 2998static int
2999iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3000 struct ieee80211_vif_chanctx_switch *vifs)
b08c1d97 3001{
b08c1d97
LC		 3002 int ret;
3003
b08c1d97 3004 mutex_lock(&mvm->mutex);
f0c97783 3005 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
b08c1d97
LC		 3006 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3007
3008 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3009 if (ret) {
3010 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3011 goto out_reassign;
3012 }
3013
f0c97783
LC		 3014 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3015 true);
b08c1d97
LC		 3016 if (ret) {
3017 IWL_ERR(mvm,
3018 "failed to assign new_ctx during channel switch\n");
3019 goto out_remove;
3020 }
3021
f697267f
AN		 3022 /* we don't support TDLS during DCM - can be caused by channel switch */
3023 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3024 iwl_mvm_teardown_tdls_peers(mvm);
3025
b08c1d97
LC		 3026 goto out;
3027
3028out_remove:
3029 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3030
3031out_reassign:
6fd1fb63 3032 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
b08c1d97
LC		 3033 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3034 goto out_restart;
3035 }
3036
6fd1fb63
LC		 3037 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3038 true)) {
b08c1d97
LC		 3039 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3040 goto out_restart;
3041 }
3042
3043 goto out;
3044
3045out_restart:
3046 /* things keep failing, better restart the hw */
3047 iwl_mvm_nic_restart(mvm, false);
3048
3049out:
3050 mutex_unlock(&mvm->mutex);
50cc9574
LC		 3051
3052 return ret;
3053}
3054
48a256e8
LC		 3055static int
3056iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3057 struct ieee80211_vif_chanctx_switch *vifs)
3058{
3059 int ret;
3060
3061 mutex_lock(&mvm->mutex);
3062 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3063
3064 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3065 true);
3066 if (ret) {
3067 IWL_ERR(mvm,
3068 "failed to assign new_ctx during channel switch\n");
3069 goto out_reassign;
3070 }
3071
3072 goto out;
3073
3074out_reassign:
3075 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3076 true)) {
3077 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3078 goto out_restart;
3079 }
3080
3081 goto out;
3082
3083out_restart:
3084 /* things keep failing, better restart the hw */
3085 iwl_mvm_nic_restart(mvm, false);
3086
3087out:
3088 mutex_unlock(&mvm->mutex);
3089
3090 return ret;
3091}
3092
50cc9574
LC		 3093static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3094 struct ieee80211_vif_chanctx_switch *vifs,
3095 int n_vifs,
3096 enum ieee80211_chanctx_switch_mode mode)
3097{
3098 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3099 int ret;
3100
3101 /* we only support a single-vif right now */
3102 if (n_vifs > 1)
3103 return -EOPNOTSUPP;
3104
3105 switch (mode) {
3106 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3107 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3108 break;
3109 case CHANCTX_SWMODE_REASSIGN_VIF:
48a256e8 3110 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
50cc9574
LC		 3111 break;
3112 default:
3113 ret = -EOPNOTSUPP;
3114 break;
3115 }
3116
b08c1d97
LC		 3117 return ret;
3118}
3119
8ca151b5
JB		 3120static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3121 struct ieee80211_sta *sta,
3122 bool set)
3123{
3124 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3125 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
3126
3127 if (!mvm_sta || !mvm_sta->vif) {
3128 IWL_ERR(mvm, "Station is not associated to a vif\n");
3129 return -EINVAL;
3130 }
3131
3132 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3133}
3134
507cadf2
DS		 3135#ifdef CONFIG_NL80211_TESTMODE
3136static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3137 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3138 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
f6c6ad42 3139 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
507cadf2
DS		 3140};
3141
3142static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3143 struct ieee80211_vif *vif,
3144 void *data, int len)
3145{
3146 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3147 int err;
3148 u32 noa_duration;
3149
3150 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3151 if (err)
3152 return err;
3153
3154 if (!tb[IWL_MVM_TM_ATTR_CMD])
3155 return -EINVAL;
3156
3157 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3158 case IWL_MVM_TM_CMD_SET_NOA:
3159 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3160 !vif->bss_conf.enable_beacon ||
3161 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3162 return -EINVAL;
3163
3164 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3165 if (noa_duration >= vif->bss_conf.beacon_int)
3166 return -EINVAL;
3167
3168 mvm->noa_duration = noa_duration;
3169 mvm->noa_vif = vif;
3170
0166230c 3171 return iwl_mvm_update_quotas(mvm, NULL);
f6c6ad42
JB		 3172 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3173 /* must be associated client vif - ignore authorized */
3174 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3175 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3176 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3177 return -EINVAL;
3178
3179 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
a1022927
EG		 3180 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3181 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
507cadf2
DS		 3182 }
3183
3184 return -EOPNOTSUPP;
3185}
3186
3187static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3188 struct ieee80211_vif *vif,
3189 void *data, int len)
3190{
3191 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3192 int err;
3193
3194 mutex_lock(&mvm->mutex);
3195 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3196 mutex_unlock(&mvm->mutex);
3197
3198 return err;
3199}
3200#endif
3201
622e3f9b
LC		 3202static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3203 struct ieee80211_vif *vif,
3204 struct ieee80211_channel_switch *chsw)
3205{
3206 /* By implementing this operation, we prevent mac80211 from
3207 * starting its own channel switch timer, so that we can call
3208 * ieee80211_chswitch_done() ourselves at the right time
3209 * (which is when the absence time event starts).
3210 */
3211
3212 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3213 "dummy channel switch op\n");
3214}
3215
f028905c
LC		 3216static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3217 struct ieee80211_vif *vif,
3218 struct ieee80211_channel_switch *chsw)
bd3398e2
AO		 3219{
3220 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
664322fa 3221 struct ieee80211_vif *csa_vif;
f6c34820 3222 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
dc88b4ba 3223 u32 apply_time;
f028905c 3224 int ret;
bd3398e2
AO		 3225
3226 mutex_lock(&mvm->mutex);
664322fa 3227
6b20d774 3228 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
f028905c 3229 chsw->chandef.center_freq1);
6b20d774
LC		 3230
3231 switch (vif->type) {
3232 case NL80211_IFTYPE_AP:
3233 csa_vif =
3234 rcu_dereference_protected(mvm->csa_vif,
3235 lockdep_is_held(&mvm->mutex));
3236 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3237 "Another CSA is already in progress")) {
3238 ret = -EBUSY;
3239 goto out_unlock;
3240 }
3241
3242 rcu_assign_pointer(mvm->csa_vif, vif);
7ef0aab6 3243
7ef0aab6
AO		 3244 if (WARN_ONCE(mvmvif->csa_countdown,
3245 "Previous CSA countdown didn't complete")) {
3246 ret = -EBUSY;
3247 goto out_unlock;
3248 }
3249
6b20d774 3250 break;
dc88b4ba 3251 case NL80211_IFTYPE_STATION:
4500e133
LC		 3252 /* Schedule the time event to a bit before beacon 1,
3253 * to make sure we're in the new channel when the
3254 * GO/AP arrives.
3255 */
3256 apply_time = chsw->device_timestamp +
3257 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3258 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
dc88b4ba
LC		 3259
3260 if (chsw->block_tx)
3261 iwl_mvm_csa_client_absent(mvm, vif);
3262
4500e133 3263 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
dc88b4ba 3264 apply_time);
c6e0a3e0
LC		 3265 if (mvmvif->bf_data.bf_enabled) {
3266 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3267 if (ret)
3268 goto out_unlock;
3269 }
3270
dc88b4ba 3271 break;
6b20d774
LC		 3272 default:
3273 break;
3274 }
bd3398e2 3275
f6c34820
LC		 3276 mvmvif->ps_disabled = true;
3277
3278 ret = iwl_mvm_power_update_ps(mvm);
3279 if (ret)
3280 goto out_unlock;
f028905c 3281
e198f5e7
AN		 3282 /* we won't be on this channel any longer */
3283 iwl_mvm_teardown_tdls_peers(mvm);
3284
bd3398e2
AO		 3285out_unlock:
3286 mutex_unlock(&mvm->mutex);
f028905c
LC		 3287
3288 return ret;
bd3398e2
AO		 3289}
3290
f6c34820
LC		 3291static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3292 struct ieee80211_vif *vif)
3293{
3294 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3295 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3296 int ret;
3297
3298 mutex_lock(&mvm->mutex);
3299
a57c688d
LC		 3300 if (vif->type == NL80211_IFTYPE_STATION) {
3301 struct iwl_mvm_sta *mvmsta;
3302
3303 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3304 mvmvif->ap_sta_id);
3305
3306 if (WARN_ON(!mvmsta)) {
3307 ret = -EIO;
3308 goto out_unlock;
3309 }
3310
3311 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3312
3313 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
c6e0a3e0
LC		 3314
3315 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3316 if (ret)
3317 goto out_unlock;
686e7fe1
LC		 3318
3319 iwl_mvm_stop_session_protection(mvm, vif);
a57c688d
LC		 3320 }
3321
f6c34820
LC		 3322 mvmvif->ps_disabled = false;
3323
3324 ret = iwl_mvm_power_update_ps(mvm);
3325
a57c688d 3326out_unlock:
f6c34820
LC		 3327 mutex_unlock(&mvm->mutex);
3328
3329 return ret;
3330}
3331
c5b0e7c0
EG		 3332static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3333 struct ieee80211_vif *vif, u32 queues, bool drop)
3334{
3335 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3336 struct iwl_mvm_vif *mvmvif;
3337 struct iwl_mvm_sta *mvmsta;
a0f6bf2a
AN		 3338 struct ieee80211_sta *sta;
3339 int i;
3340 u32 msk = 0;
c5b0e7c0
EG		 3341
3342 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3343 return;
3344
3345 mutex_lock(&mvm->mutex);
3346 mvmvif = iwl_mvm_vif_from_mac80211(vif);
c5b0e7c0 3347
a0f6bf2a
AN		 3348 /* flush the AP-station and all TDLS peers */
3349 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3350 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3351 lockdep_is_held(&mvm->mutex));
3352 if (IS_ERR_OR_NULL(sta))
3353 continue;
3354
3355 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3356 if (mvmsta->vif != vif)
3357 continue;
3358
3359 /* make sure only TDLS peers or the AP are flushed */
3360 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3361
3362 msk |= mvmsta->tfd_queue_msk;
480acbce 3363 }
c5b0e7c0
EG		 3364
3365 if (drop) {
a0f6bf2a 3366 if (iwl_mvm_flush_tx_path(mvm, msk, true))
c5b0e7c0 3367 IWL_ERR(mvm, "flush request fail\n");
480acbce 3368 mutex_unlock(&mvm->mutex);
c5b0e7c0 3369 } else {
480acbce
JB		 3370 mutex_unlock(&mvm->mutex);
3371
3372 /* this can take a while, and we may need/want other operations
3373 * to succeed while doing this, so do it without the mutex held
3374 */
a0f6bf2a 3375 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
c5b0e7c0 3376 }
c5b0e7c0
EG		 3377}
3378
e5209263 3379const struct ieee80211_ops iwl_mvm_hw_ops = {
8ca151b5
JB		 3380 .tx = iwl_mvm_mac_tx,
3381 .ampdu_action = iwl_mvm_mac_ampdu_action,
3382 .start = iwl_mvm_mac_start,
cf2c92d8 3383 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
8ca151b5
JB		 3384 .stop = iwl_mvm_mac_stop,
3385 .add_interface = iwl_mvm_mac_add_interface,
3386 .remove_interface = iwl_mvm_mac_remove_interface,
3387 .config = iwl_mvm_mac_config,
e59647ea 3388 .prepare_multicast = iwl_mvm_prepare_multicast,
8ca151b5
JB		 3389 .configure_filter = iwl_mvm_configure_filter,
3390 .bss_info_changed = iwl_mvm_bss_info_changed,
3391 .hw_scan = iwl_mvm_mac_hw_scan,
3392 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1ddbbb0c 3393 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
8ca151b5
JB		 3394 .sta_state = iwl_mvm_mac_sta_state,
3395 .sta_notify = iwl_mvm_mac_sta_notify,
3396 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3e56eadf 3397 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
8ca151b5 3398 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1f3b0ff8 3399 .sta_rc_update = iwl_mvm_sta_rc_update,
8ca151b5
JB		 3400 .conf_tx = iwl_mvm_mac_conf_tx,
3401 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
07ecd897 3402 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
c5b0e7c0 3403 .flush = iwl_mvm_mac_flush,
35a000b7
DS		 3404 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3405 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
8ca151b5
JB		 3406 .set_key = iwl_mvm_mac_set_key,
3407 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3408 .remain_on_channel = iwl_mvm_roc,
3409 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
8ca151b5
JB		 3410 .add_chanctx = iwl_mvm_add_chanctx,
3411 .remove_chanctx = iwl_mvm_remove_chanctx,
3412 .change_chanctx = iwl_mvm_change_chanctx,
3413 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3414 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
b08c1d97 3415 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
8ca151b5 3416
5023d966
JB		 3417 .start_ap = iwl_mvm_start_ap_ibss,
3418 .stop_ap = iwl_mvm_stop_ap_ibss,
3419 .join_ibss = iwl_mvm_start_ap_ibss,
3420 .leave_ibss = iwl_mvm_stop_ap_ibss,
8ca151b5
JB		 3421
3422 .set_tim = iwl_mvm_set_tim,
3423
622e3f9b 3424 .channel_switch = iwl_mvm_channel_switch,
f028905c 3425 .pre_channel_switch = iwl_mvm_pre_channel_switch,
f6c34820 3426 .post_channel_switch = iwl_mvm_post_channel_switch,
bd3398e2 3427
1d3c3f63
AN		 3428 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3429 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3430 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3431
507cadf2
DS		 3432 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3433
8ca151b5
JB		 3434#ifdef CONFIG_PM_SLEEP
3435 /* look at d3.c */
3436 .suspend = iwl_mvm_suspend,
3437 .resume = iwl_mvm_resume,
3438 .set_wakeup = iwl_mvm_set_wakeup,
3439 .set_rekey_data = iwl_mvm_set_rekey_data,
3440#if IS_ENABLED(CONFIG_IPV6)
3441 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3442#endif
3443 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3444#endif
3445};
Linux kernel - Deliverables
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