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iwlwifi: mvm: use iwl_mvm_vif_from_mac80211() consistently
[mirror_ubuntu-artful-kernel.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 {
2624a5ca 109 .num_different_channels = 2,
8ca151b5
JB		 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;
91742449
EP		 465 }
466
467 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
8ca151b5
JB		 468 mvm->trans->ops->d3_suspend &&
469 mvm->trans->ops->d3_resume &&
470 device_can_wakeup(mvm->trans->dev)) {
91742449
EP		 471 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
472 WIPHY_WOWLAN_DISCONNECT |
473 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
474 WIPHY_WOWLAN_RFKILL_RELEASE |
475 WIPHY_WOWLAN_NET_DETECT;
8ca151b5 476 if (!iwlwifi_mod_params.sw_crypto)
964dc9e2
JB		 477 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
478 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
479 WIPHY_WOWLAN_4WAY_HANDSHAKE;
480
481 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
482 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
483 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
c55385f5 484 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
964dc9e2
JB		 485 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
486 hw->wiphy->wowlan = &mvm->wowlan;
8ca151b5
JB		 487 }
488#endif
489
77736923
EP		 490#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
491 /* assign default bcast filtering configuration */
492 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
493#endif
494
8ca151b5
JB		 495 ret = iwl_mvm_leds_init(mvm);
496 if (ret)
497 return ret;
498
d8f1c515
AN		 499 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
500 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
501 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
502 }
503
1d3c3f63
AN		 504 if (mvm->fw->ucode_capa.capa[0] &
505 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
506 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
507 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
508 }
509
b7327d89
EG		 510 ret = ieee80211_register_hw(mvm->hw);
511 if (ret)
512 iwl_mvm_leds_exit(mvm);
513
514 return ret;
8ca151b5
JB		 515}
516
b2492501
AN		 517static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
518 struct ieee80211_sta *sta,
519 struct sk_buff *skb)
520{
521 struct iwl_mvm_sta *mvmsta;
522 bool defer = false;
523
524 /*
525 * double check the IN_D0I3 flag both before and after
526 * taking the spinlock, in order to prevent taking
527 * the spinlock when not needed.
528 */
529 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
530 return false;
531
532 spin_lock(&mvm->d0i3_tx_lock);
533 /*
534 * testing the flag again ensures the skb dequeue
535 * loop (on d0i3 exit) hasn't run yet.
536 */
537 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
538 goto out;
539
540 mvmsta = iwl_mvm_sta_from_mac80211(sta);
541 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
542 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
543 goto out;
544
545 __skb_queue_tail(&mvm->d0i3_tx, skb);
546 ieee80211_stop_queues(mvm->hw);
547
548 /* trigger wakeup */
549 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
550 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
551
552 defer = true;
553out:
554 spin_unlock(&mvm->d0i3_tx_lock);
555 return defer;
556}
557
8ca151b5
JB		 558static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
559 struct ieee80211_tx_control *control,
560 struct sk_buff *skb)
561{
562 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3e56eadf
JB		 563 struct ieee80211_sta *sta = control->sta;
564 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
565 struct ieee80211_hdr *hdr = (void *)skb->data;
8ca151b5 566
9ee718aa
EL		 567 if (iwl_mvm_is_radio_killed(mvm)) {
568 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
8ca151b5
JB		 569 goto drop;
570 }
571
398e8c6c 572 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
a6cc5163
MG		 573 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
574 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
8ca151b5
JB		 575 goto drop;
576
3e56eadf
JB		 577 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
578 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
579 ieee80211_is_mgmt(hdr->frame_control) &&
580 !ieee80211_is_deauth(hdr->frame_control) &&
581 !ieee80211_is_disassoc(hdr->frame_control) &&
582 !ieee80211_is_action(hdr->frame_control)))
583 sta = NULL;
584
585 if (sta) {
b2492501
AN		 586 if (iwl_mvm_defer_tx(mvm, sta, skb))
587 return;
3e56eadf 588 if (iwl_mvm_tx_skb(mvm, skb, sta))
8ca151b5
JB		 589 goto drop;
590 return;
591 }
592
593 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
594 goto drop;
595 return;
596 drop:
597 ieee80211_free_txskb(hw, skb);
598}
599
205e2210
EG		 600static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
601{
602 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
603 return false;
604 return true;
605}
606
607static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
608{
609 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
610 return false;
611 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
612 return true;
613
614 /* enabled by default */
615 return true;
616}
617
8ca151b5
JB		 618static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
619 struct ieee80211_vif *vif,
620 enum ieee80211_ampdu_mlme_action action,
621 struct ieee80211_sta *sta, u16 tid,
622 u16 *ssn, u8 buf_size)
623{
624 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
625 int ret;
b2492501 626 bool tx_agg_ref = false;
8ca151b5
JB		 627
628 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
629 sta->addr, tid, action);
630
631 if (!(mvm->nvm_data->sku_cap_11n_enable))
632 return -EACCES;
633
b2492501 634 /* return from D0i3 before starting a new Tx aggregation */
9256c205
EP		 635 switch (action) {
636 case IEEE80211_AMPDU_TX_START:
637 case IEEE80211_AMPDU_TX_STOP_CONT:
638 case IEEE80211_AMPDU_TX_STOP_FLUSH:
639 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
640 case IEEE80211_AMPDU_TX_OPERATIONAL:
b2492501 641 /*
9256c205
EP		 642 * for tx start, wait synchronously until D0i3 exit to
643 * get the correct sequence number for the tid.
644 * additionally, some other ampdu actions use direct
645 * target access, which is not handled automatically
646 * by the trans layer (unlike commands), so wait for
647 * d0i3 exit in these cases as well.
b2492501 648 */
d40fc489
GG		 649 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
650 if (ret)
651 return ret;
652
653 tx_agg_ref = true;
9256c205
EP		 654 break;
655 default:
656 break;
b2492501
AN		 657 }
658
8ca151b5
JB		 659 mutex_lock(&mvm->mutex);
660
661 switch (action) {
662 case IEEE80211_AMPDU_RX_START:
205e2210 663 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
8ca151b5
JB		 664 ret = -EINVAL;
665 break;
666 }
667 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
668 break;
669 case IEEE80211_AMPDU_RX_STOP:
670 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
671 break;
672 case IEEE80211_AMPDU_TX_START:
205e2210 673 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
5d158efa
EG		 674 ret = -EINVAL;
675 break;
676 }
8ca151b5
JB		 677 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
678 break;
679 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 680 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
681 break;
8ca151b5
JB		 682 case IEEE80211_AMPDU_TX_STOP_FLUSH:
683 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 684 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 685 break;
686 case IEEE80211_AMPDU_TX_OPERATIONAL:
687 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
688 break;
689 default:
690 WARN_ON_ONCE(1);
691 ret = -EINVAL;
692 break;
693 }
694 mutex_unlock(&mvm->mutex);
695
b2492501
AN		 696 /*
697 * If the tid is marked as started, we won't use it for offloaded
698 * traffic on the next D0i3 entry. It's safe to unref.
699 */
700 if (tx_agg_ref)
701 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
702
8ca151b5
JB		 703 return ret;
704}
705
706static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
707 struct ieee80211_vif *vif)
708{
709 struct iwl_mvm *mvm = data;
710 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
711
712 mvmvif->uploaded = false;
713 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
714
715 /* does this make sense at all? */
716 mvmvif->color++;
717
718 spin_lock_bh(&mvm->time_event_lock);
719 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
720 spin_unlock_bh(&mvm->time_event_lock);
721
fe0f2de3 722 mvmvif->phy_ctxt = NULL;
8a275bad 723 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
8ca151b5
JB		 724}
725
aadede6e
JB		 726static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
727 const void *data, size_t datalen)
728{
729 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
730 ssize_t bytes_read;
731 ssize_t bytes_read_trans;
732
733 if (offset < dump_ptrs->op_mode_len) {
734 bytes_read = min_t(ssize_t, count,
735 dump_ptrs->op_mode_len - offset);
736 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
737 bytes_read);
738 offset += bytes_read;
739 count -= bytes_read;
740
741 if (count == 0)
742 return bytes_read;
743 } else {
744 bytes_read = 0;
745 }
746
747 if (!dump_ptrs->trans_ptr)
748 return bytes_read;
749
750 offset -= dump_ptrs->op_mode_len;
751 bytes_read_trans = min_t(ssize_t, count,
752 dump_ptrs->trans_ptr->len - offset);
753 memcpy(buffer + bytes_read,
754 (u8 *)dump_ptrs->trans_ptr->data + offset,
755 bytes_read_trans);
756
757 return bytes_read + bytes_read_trans;
758}
759
760static void iwl_mvm_free_coredump(const void *data)
761{
762 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
763
764 vfree(fw_error_dump->op_mode_ptr);
765 vfree(fw_error_dump->trans_ptr);
766 kfree(fw_error_dump);
767}
768
4bfa47f3 769void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
655e6d6d
EG		 770{
771 struct iwl_fw_error_dump_file *dump_file;
772 struct iwl_fw_error_dump_data *dump_data;
773 struct iwl_fw_error_dump_info *dump_info;
a549b296 774 struct iwl_fw_error_dump_mem *dump_mem;
48eb7b34 775 struct iwl_mvm_dump_ptrs *fw_error_dump;
655e6d6d
EG		 776 u32 sram_len, sram_ofs;
777 u32 file_len, rxf_len;
778 unsigned long flags;
655e6d6d 779 int reg_val;
addfaada 780 u32 smem_len = mvm->cfg->smem_len;
655e6d6d
EG		 781
782 lockdep_assert_held(&mvm->mutex);
783
addfaada
LK		 784 /* W/A for 8000 HW family A-step */
785 if (mvm->cfg->smem_len &&
786 mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
787 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_A_STEP)
788 smem_len = 0x38000;
789
aadede6e 790 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
48eb7b34
EG		 791 if (!fw_error_dump)
792 return;
793
f53bf4c7
LK		 794 /* SRAM - include stack CCM if driver knows the values for it */
795 if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
796 const struct fw_img *img;
797
798 img = &mvm->fw->img[mvm->cur_ucode];
799 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
800 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
801 } else {
802 sram_ofs = mvm->cfg->dccm_offset;
803 sram_len = mvm->cfg->dccm_len;
804 }
655e6d6d
EG		 805
806 /* reading buffer size */
807 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
808 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
809
810 /* the register holds the value divided by 128 */
811 rxf_len = rxf_len << 7;
812
813 file_len = sizeof(*dump_file) +
814 sizeof(*dump_data) * 3 +
a549b296 815 sram_len + sizeof(*dump_mem) +
655e6d6d
EG		 816 rxf_len +
817 sizeof(*dump_info);
818
addfaada
LK		 819 /* Make room for the SMEM, if it exists */
820 if (smem_len)
a549b296 821 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
addfaada 822
5bfe6f53 823 dump_file = vzalloc(file_len);
48eb7b34
EG		 824 if (!dump_file) {
825 kfree(fw_error_dump);
655e6d6d 826 return;
48eb7b34 827 }
655e6d6d 828
48eb7b34 829 fw_error_dump->op_mode_ptr = dump_file;
655e6d6d
EG		 830
831 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
655e6d6d
EG		 832 dump_data = (void *)dump_file->data;
833
834 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
835 dump_data->len = cpu_to_le32(sizeof(*dump_info));
836 dump_info = (void *) dump_data->data;
837 dump_info->device_family =
838 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
839 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
840 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
435da2ce 841 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
655e6d6d
EG		 842 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
843 sizeof(dump_info->fw_human_readable));
844 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
845 sizeof(dump_info->dev_human_readable));
846 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
847 sizeof(dump_info->bus_human_readable));
848
849 dump_data = iwl_fw_error_next_data(dump_data);
850 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
851 dump_data->len = cpu_to_le32(rxf_len);
852
853 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
854 u32 *rxf = (void *)dump_data->data;
855 int i;
856
857 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
858 iwl_trans_write_prph(mvm->trans,
859 RXF_LD_FENCE_OFFSET_ADDR,
860 i * sizeof(u32));
861 rxf[i] = iwl_trans_read_prph(mvm->trans,
862 RXF_FIFO_RD_FENCE_ADDR);
863 }
864 iwl_trans_release_nic_access(mvm->trans, &flags);
865 }
866
867 dump_data = iwl_fw_error_next_data(dump_data);
a549b296
EG		 868 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
869 dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
870 dump_mem = (void *)dump_data->data;
871 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
872 dump_mem->offset = cpu_to_le32(sram_ofs);
873 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
655e6d6d
EG		 874 sram_len);
875
addfaada
LK		 876 if (smem_len) {
877 dump_data = iwl_fw_error_next_data(dump_data);
e06d8437
EG		 878 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
879 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
880 dump_mem = (void *)dump_data->data;
881 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
882 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
addfaada 883 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
e06d8437 884 dump_mem->data, smem_len);
addfaada
LK		 885 }
886
48eb7b34
EG		 887 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
888 fw_error_dump->op_mode_len = file_len;
889 if (fw_error_dump->trans_ptr)
890 file_len += fw_error_dump->trans_ptr->len;
891 dump_file->file_len = cpu_to_le32(file_len);
4bfa47f3 892
aadede6e
JB		 893 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
894 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
655e6d6d 895}
655e6d6d 896
8ca151b5
JB		 897static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
898{
58629d9d
JB		 899 /* clear the D3 reconfig, we only need it to avoid dumping a
900 * firmware coredump on reconfiguration, we shouldn't do that
901 * on D3->D0 transition
902 */
903 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status))
904 iwl_mvm_fw_error_dump(mvm);
1bd3cbc1 905
744cb695
EP		 906 /* cleanup all stale references (scan, roc), but keep the
907 * ucode_down ref until reconfig is complete
908 */
909 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
910
8ca151b5 911 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 912
913 mvm->scan_status = IWL_MVM_SCAN_NONE;
b1873300 914 mvm->ps_disabled = false;
31b8b343 915 mvm->calibrating = false;
8ca151b5
JB		 916
917 /* just in case one was running */
918 ieee80211_remain_on_channel_expired(mvm->hw);
919
920 ieee80211_iterate_active_interfaces_atomic(
921 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
922 iwl_mvm_cleanup_iterator, mvm);
923
fe0f2de3 924 mvm->p2p_device_vif = NULL;
37577fe2 925 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
fe0f2de3
IP		 926
927 iwl_mvm_reset_phy_ctxts(mvm);
8ca151b5
JB		 928 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
929 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
a0f6bf2a 930 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
8a275bad
EG		 931 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
932 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
933 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
934 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
935 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
936 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
8ca151b5
JB		 937
938 ieee80211_wake_queues(mvm->hw);
939
228670b2
EP		 940 /* clear any stale d0i3 state */
941 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
942
8ca151b5 943 mvm->vif_count = 0;
113a0447 944 mvm->rx_ba_sessions = 0;
8ca151b5
JB		 945}
946
a0a09243 947int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
8ca151b5 948{
8ca151b5
JB		 949 int ret;
950
a0a09243 951 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 952
953 /* Clean up some internal and mac80211 state on restart */
954 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
955 iwl_mvm_restart_cleanup(mvm);
956
957 ret = iwl_mvm_up(mvm);
c47af22a
JB		 958
959 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
960 /* Something went wrong - we need to finish some cleanup
961 * that normally iwl_mvm_mac_restart_complete() below
962 * would do.
963 */
964 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
965 iwl_mvm_d0i3_enable_tx(mvm, NULL);
966 }
967
a0a09243
LC		 968 return ret;
969}
970
971static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
972{
973 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
974 int ret;
975
37948fcf
EP		 976 /* Some hw restart cleanups must not hold the mutex */
977 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
978 /*
979 * Make sure we are out of d0i3. This is needed
980 * to make sure the reference accounting is correct
981 * (and there is no stale d0i3_exit_work).
982 */
983 wait_event_timeout(mvm->d0i3_exit_waitq,
984 !test_bit(IWL_MVM_STATUS_IN_D0I3,
985 &mvm->status),
986 HZ);
987 }
988
a0a09243
LC		 989 mutex_lock(&mvm->mutex);
990 ret = __iwl_mvm_mac_start(mvm);
8ca151b5
JB		 991 mutex_unlock(&mvm->mutex);
992
993 return ret;
994}
995
cf2c92d8 996static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
8ca151b5 997{
8ca151b5
JB		 998 int ret;
999
1000 mutex_lock(&mvm->mutex);
1001
1002 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
b2492501 1003 iwl_mvm_d0i3_enable_tx(mvm, NULL);
0166230c 1004 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1005 if (ret)
1006 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1007 ret);
1008
7498cf4c
EP		 1009 /* allow transport/FW low power modes */
1010 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1011
cbd2ae2d
AN		 1012 /*
1013 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1014 * of packets the FW sent out, so we must reconnect.
1015 */
1016 iwl_mvm_teardown_tdls_peers(mvm);
1017
8ca151b5
JB		 1018 mutex_unlock(&mvm->mutex);
1019}
1020
088070a2
EP		 1021static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1022{
1023 bool exit_now;
1024
1025 if (!iwl_mvm_is_d0i3_supported(mvm))
1026 return;
1027
1028 mutex_lock(&mvm->d0i3_suspend_mutex);
1029 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1030 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1031 &mvm->d0i3_suspend_flags);
1032 mutex_unlock(&mvm->d0i3_suspend_mutex);
1033
1034 if (exit_now) {
1035 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1036 _iwl_mvm_exit_d0i3(mvm);
1037 }
6735943f
EP		 1038
1039 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1040 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1041 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1042 &mvm->status),
1043 HZ))
1044 WARN_ONCE(1, "D0i3 exit on resume timed out\n");
088070a2
EP		 1045}
1046
cf2c92d8
EP		 1047static void
1048iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1049 enum ieee80211_reconfig_type reconfig_type)
1050{
1051 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1052
1053 switch (reconfig_type) {
1054 case IEEE80211_RECONFIG_TYPE_RESTART:
1055 iwl_mvm_restart_complete(mvm);
1056 break;
1057 case IEEE80211_RECONFIG_TYPE_SUSPEND:
088070a2 1058 iwl_mvm_resume_complete(mvm);
cf2c92d8
EP		 1059 break;
1060 }
1061}
1062
a0a09243 1063void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
8ca151b5 1064{
a0a09243 1065 lockdep_assert_held(&mvm->mutex);
7498cf4c
EP		 1066
1067 /* disallow low power states when the FW is down */
1068 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1069
8ca151b5
JB		 1070 /* async_handlers_wk is now blocked */
1071
1072 /*
1073 * The work item could be running or queued if the
1074 * ROC time event stops just as we get here.
1075 */
1076 cancel_work_sync(&mvm->roc_done_wk);
1077
1078 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 1079
1080 iwl_mvm_async_handlers_purge(mvm);
1081 /* async_handlers_list is empty and will stay empty: HW is stopped */
1082
1083 /* the fw is stopped, the aux sta is dead: clean up driver state */
712b24ad 1084 iwl_mvm_del_aux_sta(mvm);
8ca151b5 1085
bc44886d 1086 mvm->ucode_loaded = false;
a0a09243 1087}
bc44886d 1088
a0a09243
LC		 1089static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1090{
1091 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1092
1093 flush_work(&mvm->d0i3_exit_work);
1094 flush_work(&mvm->async_handlers_wk);
4bfa47f3 1095 flush_work(&mvm->fw_error_dump_wk);
a0a09243
LC		 1096
1097 mutex_lock(&mvm->mutex);
1098 __iwl_mvm_mac_stop(mvm);
8ca151b5
JB		 1099 mutex_unlock(&mvm->mutex);
1100
1101 /*
1102 * The worker might have been waiting for the mutex, let it run and
1103 * discover that its list is now empty.
1104 */
1105 cancel_work_sync(&mvm->async_handlers_wk);
1106}
1107
fe0f2de3
IP		 1108static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1109{
1110 u16 i;
1111
1112 lockdep_assert_held(&mvm->mutex);
1113
1114 for (i = 0; i < NUM_PHY_CTX; i++)
1115 if (!mvm->phy_ctxts[i].ref)
1116 return &mvm->phy_ctxts[i];
1117
1118 IWL_ERR(mvm, "No available PHY context\n");
1119 return NULL;
1120}
1121
ee9c6cb0
EG		 1122static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1123 s8 tx_power)
1124{
1125 /* FW is in charge of regulatory enforcement */
1126 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1127 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1128 .pwr_restriction = cpu_to_le16(tx_power),
1129 };
1130
a1022927 1131 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
ee9c6cb0
EG		 1132 sizeof(reduce_txpwr_cmd),
1133 &reduce_txpwr_cmd);
1134}
1135
8ca151b5
JB		 1136static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1137 struct ieee80211_vif *vif)
1138{
1139 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1140 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1141 int ret;
1142
d40fc489
GG		 1143 /*
1144 * make sure D0i3 exit is completed, otherwise a target access
1145 * during tx queue configuration could be done when still in
1146 * D0i3 state.
1147 */
1148 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1149 if (ret)
1150 return ret;
1151
8ca151b5
JB		 1152 /*
1153 * Not much to do here. The stack will not allow interface
1154 * types or combinations that we didn't advertise, so we
1155 * don't really have to check the types.
1156 */
1157
1158 mutex_lock(&mvm->mutex);
1159
e89044d7 1160 /* Allocate resources for the MAC context, and add it to the fw */
8ca151b5
JB		 1161 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1162 if (ret)
1163 goto out_unlock;
1164
1c2abf72 1165 /* Counting number of interfaces is needed for legacy PM */
ea183d02
IP		 1166 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1167 mvm->vif_count++;
ea183d02 1168
8ca151b5
JB		 1169 /*
1170 * The AP binding flow can be done only after the beacon
1171 * template is configured (which happens only in the mac80211
1172 * start_ap() flow), and adding the broadcast station can happen
1173 * only after the binding.
1174 * In addition, since modifying the MAC before adding a bcast
1175 * station is not allowed by the FW, delay the adding of MAC context to
1176 * the point where we can also add the bcast station.
1177 * In short: there's not much we can do at this point, other than
1178 * allocating resources :)
1179 */
5023d966
JB		 1180 if (vif->type == NL80211_IFTYPE_AP ||
1181 vif->type == NL80211_IFTYPE_ADHOC) {
013290aa 1182 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1183 if (ret) {
1184 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1185 goto out_release;
1186 }
1187
77740cb4 1188 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1189 goto out_unlock;
1190 }
1191
8ca151b5
JB		 1192 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1193 if (ret)
1194 goto out_release;
1195
999609f1 1196 ret = iwl_mvm_power_update_mac(mvm);
e5e7aa8e
EG		 1197 if (ret)
1198 goto out_release;
8ca151b5 1199
7df15b1e 1200 /* beacon filtering */
a1022927 1201 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
bd3351ba
EP		 1202 if (ret)
1203 goto out_remove_mac;
1204
7df15b1e 1205 if (!mvm->bf_allowed_vif &&
73e5f2c5 1206 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
7df15b1e 1207 mvm->bf_allowed_vif = mvmvif;
a20fd398
AO		 1208 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1209 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
7df15b1e
HG		 1210 }
1211
8ca151b5
JB		 1212 /*
1213 * P2P_DEVICE interface does not have a channel context assigned to it,
1214 * so a dedicated PHY context is allocated to it and the corresponding
1215 * MAC context is bound to it at this stage.
1216 */
1217 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 1218
fe0f2de3
IP		 1219 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1220 if (!mvmvif->phy_ctxt) {
1221 ret = -ENOSPC;
bd3351ba 1222 goto out_free_bf;
fe0f2de3 1223 }
8ca151b5 1224
53a9d61e 1225 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1226 ret = iwl_mvm_binding_add_vif(mvm, vif);
1227 if (ret)
53a9d61e 1228 goto out_unref_phy;
8ca151b5 1229
013290aa 1230 ret = iwl_mvm_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1231 if (ret)
1232 goto out_unbind;
1233
1234 /* Save a pointer to p2p device vif, so it can later be used to
1235 * update the p2p device MAC when a GO is started/stopped */
1236 mvm->p2p_device_vif = vif;
1237 }
1238
63494374 1239 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1240 goto out_unlock;
1241
1242 out_unbind:
1243 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 1244 out_unref_phy:
fe0f2de3 1245 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
bd3351ba
EP		 1246 out_free_bf:
1247 if (mvm->bf_allowed_vif == mvmvif) {
1248 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1249 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1250 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
bd3351ba 1251 }
8ca151b5
JB		 1252 out_remove_mac:
1253 mvmvif->phy_ctxt = NULL;
1254 iwl_mvm_mac_ctxt_remove(mvm, vif);
1255 out_release:
5ee2b215
AB		 1256 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1257 mvm->vif_count--;
1c2abf72 1258
8ca151b5
JB		 1259 iwl_mvm_mac_ctxt_release(mvm, vif);
1260 out_unlock:
1261 mutex_unlock(&mvm->mutex);
1262
d40fc489
GG		 1263 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1264
8ca151b5
JB		 1265 return ret;
1266}
1267
38a12b5b
JB		 1268static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1269 struct ieee80211_vif *vif)
8ca151b5 1270{
d92b732e 1271 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
8ca151b5
JB		 1272
1273 if (tfd_msk) {
1274 mutex_lock(&mvm->mutex);
1275 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1276 mutex_unlock(&mvm->mutex);
1277 }
1278
1279 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1280 /*
1281 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1282 * We assume here that all the packets sent to the OFFCHANNEL
1283 * queue are sent in ROC session.
1284 */
1285 flush_work(&mvm->roc_done_wk);
1286 } else {
1287 /*
1288 * By now, all the AC queues are empty. The AGG queues are
1289 * empty too. We already got all the Tx responses for all the
1290 * packets in the queues. The drain work can have been
0742a75a 1291 * triggered. Flush it.
8ca151b5
JB		 1292 */
1293 flush_work(&mvm->sta_drained_wk);
1294 }
38a12b5b
JB		 1295}
1296
1297static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1298 struct ieee80211_vif *vif)
1299{
1300 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1301 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1302
1303 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 1304
1305 mutex_lock(&mvm->mutex);
1306
7df15b1e
HG		 1307 if (mvm->bf_allowed_vif == mvmvif) {
1308 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1309 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1310 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
7df15b1e
HG		 1311 }
1312
63494374
JB		 1313 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1314
8ca151b5
JB		 1315 /*
1316 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 1317 * interface is be handled as part of the stop_ap flow.
8ca151b5 1318 */
5023d966
JB		 1319 if (vif->type == NL80211_IFTYPE_AP ||
1320 vif->type == NL80211_IFTYPE_ADHOC) {
507cadf2
DS		 1321#ifdef CONFIG_NL80211_TESTMODE
1322 if (vif == mvm->noa_vif) {
1323 mvm->noa_vif = NULL;
1324 mvm->noa_duration = 0;
1325 }
1326#endif
013290aa 1327 iwl_mvm_dealloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1328 goto out_release;
1329 }
1330
1331 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1332 mvm->p2p_device_vif = NULL;
013290aa 1333 iwl_mvm_rm_bcast_sta(mvm, vif);
8ca151b5 1334 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 1335 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1336 mvmvif->phy_ctxt = NULL;
1337 }
1338
5ee2b215 1339 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5 1340 mvm->vif_count--;
1c2abf72 1341
999609f1 1342 iwl_mvm_power_update_mac(mvm);
8ca151b5
JB		 1343 iwl_mvm_mac_ctxt_remove(mvm, vif);
1344
1345out_release:
1346 iwl_mvm_mac_ctxt_release(mvm, vif);
1347 mutex_unlock(&mvm->mutex);
1348}
1349
1350static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
88f2fd73 1351{
8ca151b5
JB		 1352 return 0;
1353}
1354
e59647ea
EP		 1355struct iwl_mvm_mc_iter_data {
1356 struct iwl_mvm *mvm;
1357 int port_id;
1358};
1359
1360static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1361 struct ieee80211_vif *vif)
1362{
1363 struct iwl_mvm_mc_iter_data *data = _data;
1364 struct iwl_mvm *mvm = data->mvm;
1365 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1366 int ret, len;
1367
1368 /* if we don't have free ports, mcast frames will be dropped */
1369 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1370 return;
1371
1372 if (vif->type != NL80211_IFTYPE_STATION ||
1373 !vif->bss_conf.assoc)
1374 return;
1375
1376 cmd->port_id = data->port_id++;
1377 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1378 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1379
1c4abec0 1380 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
e59647ea
EP		 1381 if (ret)
1382 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1383}
1384
1385static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1386{
1387 struct iwl_mvm_mc_iter_data iter_data = {
1388 .mvm = mvm,
88f2fd73
MG		 1389 };
1390
e59647ea
EP		 1391 lockdep_assert_held(&mvm->mutex);
1392
1393 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1394 return;
1395
1c4abec0 1396 ieee80211_iterate_active_interfaces_atomic(
e59647ea
EP		 1397 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1398 iwl_mvm_mc_iface_iterator, &iter_data);
88f2fd73
MG		 1399}
1400
e59647ea
EP		 1401static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1402 struct netdev_hw_addr_list *mc_list)
8ca151b5 1403{
e59647ea
EP		 1404 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1405 struct iwl_mcast_filter_cmd *cmd;
1406 struct netdev_hw_addr *addr;
f3bd58f4
MS		 1407 int addr_count;
1408 bool pass_all;
e59647ea
EP		 1409 int len;
1410
f3bd58f4
MS		 1411 addr_count = netdev_hw_addr_list_count(mc_list);
1412 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1413 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1414 if (pass_all)
e59647ea 1415 addr_count = 0;
e59647ea
EP		 1416
1417 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1418 cmd = kzalloc(len, GFP_ATOMIC);
1419 if (!cmd)
1420 return 0;
1421
1422 if (pass_all) {
1423 cmd->pass_all = 1;
1424 return (u64)(unsigned long)cmd;
1425 }
1426
1427 netdev_hw_addr_list_for_each(addr, mc_list) {
1428 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1429 cmd->count, addr->addr);
1430 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1431 addr->addr, ETH_ALEN);
1432 cmd->count++;
1433 }
1434
1435 return (u64)(unsigned long)cmd;
8ca151b5
JB		 1436}
1437
1438static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1439 unsigned int changed_flags,
1440 unsigned int *total_flags,
1441 u64 multicast)
1442{
e59647ea
EP		 1443 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1444 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
8ca151b5 1445
e59647ea 1446 mutex_lock(&mvm->mutex);
51b6b9e0 1447
e59647ea
EP		 1448 /* replace previous configuration */
1449 kfree(mvm->mcast_filter_cmd);
1450 mvm->mcast_filter_cmd = cmd;
51b6b9e0 1451
e59647ea
EP		 1452 if (!cmd)
1453 goto out;
51b6b9e0 1454
e59647ea
EP		 1455 iwl_mvm_recalc_multicast(mvm);
1456out:
1457 mutex_unlock(&mvm->mutex);
1458 *total_flags = 0;
51b6b9e0
EG		 1459}
1460
c87163b9
EP		 1461#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1462struct iwl_bcast_iter_data {
1463 struct iwl_mvm *mvm;
1464 struct iwl_bcast_filter_cmd *cmd;
1465 u8 current_filter;
1466};
1467
1468static void
1469iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1470 const struct iwl_fw_bcast_filter *in_filter,
1471 struct iwl_fw_bcast_filter *out_filter)
1472{
1473 struct iwl_fw_bcast_filter_attr *attr;
1474 int i;
1475
1476 memcpy(out_filter, in_filter, sizeof(*out_filter));
1477
1478 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1479 attr = &out_filter->attrs[i];
1480
1481 if (!attr->mask)
1482 break;
1483
2ee8f021
EP		 1484 switch (attr->reserved1) {
1485 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1486 if (vif->bss_conf.arp_addr_cnt != 1) {
1487 attr->mask = 0;
1488 continue;
1489 }
1490
1491 attr->val = vif->bss_conf.arp_addr_list[0];
1492 break;
1493 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1494 attr->val = *(__be32 *)&vif->addr[2];
1495 break;
1496 default:
1497 break;
1498 }
1499 attr->reserved1 = 0;
c87163b9
EP		 1500 out_filter->num_attrs++;
1501 }
1502}
1503
1504static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1505 struct ieee80211_vif *vif)
1506{
1507 struct iwl_bcast_iter_data *data = _data;
1508 struct iwl_mvm *mvm = data->mvm;
1509 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1510 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1511 struct iwl_fw_bcast_mac *bcast_mac;
1512 int i;
1513
1514 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1515 return;
1516
1517 bcast_mac = &cmd->macs[mvmvif->id];
1518
e48393e8
IP		 1519 /*
1520 * enable filtering only for associated stations, but not for P2P
1521 * Clients
1522 */
1523 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1524 !vif->bss_conf.assoc)
c87163b9
EP		 1525 return;
1526
1527 bcast_mac->default_discard = 1;
1528
1529 /* copy all configured filters */
1530 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1531 /*
1532 * Make sure we don't exceed our filters limit.
1533 * if there is still a valid filter to be configured,
1534 * be on the safe side and just allow bcast for this mac.
1535 */
1536 if (WARN_ON_ONCE(data->current_filter >=
1537 ARRAY_SIZE(cmd->filters))) {
1538 bcast_mac->default_discard = 0;
1539 bcast_mac->attached_filters = 0;
1540 break;
1541 }
1542
1543 iwl_mvm_set_bcast_filter(vif,
1544 &mvm->bcast_filters[i],
1545 &cmd->filters[data->current_filter]);
1546
1547 /* skip current filter if it contains no attributes */
1548 if (!cmd->filters[data->current_filter].num_attrs)
1549 continue;
1550
1551 /* attach the filter to current mac */
1552 bcast_mac->attached_filters |=
1553 cpu_to_le16(BIT(data->current_filter));
1554
1555 data->current_filter++;
1556 }
1557}
1558
de06a59e
EP		 1559bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1560 struct iwl_bcast_filter_cmd *cmd)
c87163b9 1561{
c87163b9
EP		 1562 struct iwl_bcast_iter_data iter_data = {
1563 .mvm = mvm,
de06a59e 1564 .cmd = cmd,
c87163b9
EP		 1565 };
1566
3b8983b1
MS		 1567 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1568 return false;
1569
de06a59e
EP		 1570 memset(cmd, 0, sizeof(*cmd));
1571 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1572 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1573
1574#ifdef CONFIG_IWLWIFI_DEBUGFS
1575 /* use debugfs filters/macs if override is configured */
1576 if (mvm->dbgfs_bcast_filtering.override) {
1577 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1578 sizeof(cmd->filters));
1579 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1580 sizeof(cmd->macs));
1581 return true;
1582 }
1583#endif
c87163b9
EP		 1584
1585 /* if no filters are configured, do nothing */
1586 if (!mvm->bcast_filters)
de06a59e 1587 return false;
c87163b9
EP		 1588
1589 /* configure and attach these filters for each associated sta vif */
1590 ieee80211_iterate_active_interfaces(
1591 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1592 iwl_mvm_bcast_filter_iterator, &iter_data);
1593
de06a59e
EP		 1594 return true;
1595}
1596static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1597 struct ieee80211_vif *vif)
1598{
1599 struct iwl_bcast_filter_cmd cmd;
1600
1601 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1602 return 0;
1603
1604 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1605 return 0;
1606
a1022927 1607 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
c87163b9
EP		 1608 sizeof(cmd), &cmd);
1609}
1610#else
1611static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1612 struct ieee80211_vif *vif)
1613{
1614 return 0;
1615}
1616#endif
1617
8ca151b5
JB		 1618static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1619 struct ieee80211_vif *vif,
1620 struct ieee80211_bss_conf *bss_conf,
1621 u32 changes)
1622{
1623 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1624 int ret;
1625
6e97b0d2
IP		 1626 /*
1627 * Re-calculate the tsf id, as the master-slave relations depend on the
1628 * beacon interval, which was not known when the station interface was
1629 * added.
1630 */
1631 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1632 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1633
3dfd3a97
JB		 1634 /*
1635 * If we're not associated yet, take the (new) BSSID before associating
1636 * so the firmware knows. If we're already associated, then use the old
1637 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1638 * branch for disassociation below.
1639 */
1640 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1641 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1642
1643 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
8ca151b5
JB		 1644 if (ret)
1645 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1646
3dfd3a97
JB		 1647 /* after sending it once, adopt mac80211 data */
1648 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1649 mvmvif->associated = bss_conf->assoc;
1650
8ca151b5
JB		 1651 if (changes & BSS_CHANGED_ASSOC) {
1652 if (bss_conf->assoc) {
1653 /* add quota for this interface */
0166230c 1654 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1655 if (ret) {
1656 IWL_ERR(mvm, "failed to update quotas\n");
1657 return;
1658 }
016d27e1
JB		 1659
1660 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1661 &mvm->status)) {
1662 /*
1663 * If we're restarting then the firmware will
1664 * obviously have lost synchronisation with
1665 * the AP. It will attempt to synchronise by
1666 * itself, but we can make it more reliable by
1667 * scheduling a session protection time event.
1668 *
1669 * The firmware needs to receive a beacon to
1670 * catch up with synchronisation, use 110% of
1671 * the beacon interval.
1672 *
1673 * Set a large maximum delay to allow for more
1674 * than a single interface.
1675 */
1676 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1677 iwl_mvm_protect_session(mvm, vif, dur, dur,
d20d37bc 1678 5 * dur, false);
016d27e1 1679 }
1f3b0ff8
LE		 1680
1681 iwl_mvm_sf_update(mvm, vif, false);
175a70b7 1682 iwl_mvm_power_vif_assoc(mvm, vif);
697162a1 1683 if (vif->p2p) {
29a90a49 1684 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
697162a1
EG		 1685 iwl_mvm_update_smps(mvm, vif,
1686 IWL_MVM_SMPS_REQ_PROT,
1687 IEEE80211_SMPS_DYNAMIC);
1688 }
8ca151b5 1689 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1f3b0ff8
LE		 1690 /*
1691 * If update fails - SF might be running in associated
1692 * mode while disassociated - which is forbidden.
1693 */
1694 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1695 "Failed to update SF upon disassociation\n");
1696
8ca151b5
JB		 1697 /* remove AP station now that the MAC is unassoc */
1698 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1699 if (ret)
1700 IWL_ERR(mvm, "failed to remove AP station\n");
37577fe2
EP		 1701
1702 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1703 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
8ca151b5
JB		 1704 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1705 /* remove quota for this interface */
0166230c 1706 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1707 if (ret)
1708 IWL_ERR(mvm, "failed to update quotas\n");
29a90a49
EP		 1709
1710 if (vif->p2p)
1711 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
3dfd3a97
JB		 1712
1713 /* this will take the cleared BSSID from bss_conf */
1714 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1715 if (ret)
1716 IWL_ERR(mvm,
1717 "failed to update MAC %pM (clear after unassoc)\n",
1718 vif->addr);
8ca151b5 1719 }
a20fd398 1720
e59647ea 1721 iwl_mvm_recalc_multicast(mvm);
c87163b9 1722 iwl_mvm_configure_bcast_filter(mvm, vif);
e59647ea 1723
a20fd398
AO		 1724 /* reset rssi values */
1725 mvmvif->bf_data.ave_beacon_signal = 0;
1726
8e484f0b 1727 iwl_mvm_bt_coex_vif_change(mvm);
f94045ed
EG		 1728 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1729 IEEE80211_SMPS_AUTOMATIC);
989c6505 1730 } else if (changes & BSS_CHANGED_BEACON_INFO) {
210a544e
JB		 1731 /*
1732 * We received a beacon _after_ association so
1733 * remove the session protection.
1734 */
1735 iwl_mvm_remove_time_event(mvm, mvmvif,
1736 &mvmvif->time_event_data);
8ca151b5 1737 }
cc87d322
EH		 1738
1739 if (changes & BSS_CHANGED_BEACON_INFO) {
1740 iwl_mvm_sf_update(mvm, vif, false);
1741 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1742 }
1743
1bc10d3b
JB		 1744 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1745 ret = iwl_mvm_power_update_mac(mvm);
1746 if (ret)
1747 IWL_ERR(mvm, "failed to update power mode\n");
1748 }
1749
88f2fd73
MG		 1750 if (changes & BSS_CHANGED_TXPOWER) {
1751 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1752 bss_conf->txpower);
1753 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1754 }
a20fd398
AO		 1755
1756 if (changes & BSS_CHANGED_CQM) {
3c6acb61 1757 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
a20fd398
AO		 1758 /* reset cqm events tracking */
1759 mvmvif->bf_data.last_cqm_event = 0;
fa7b2e7f
AA		 1760 if (mvmvif->bf_data.bf_enabled) {
1761 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1762 if (ret)
1763 IWL_ERR(mvm,
1764 "failed to update CQM thresholds\n");
1765 }
a20fd398 1766 }
2ee8f021
EP		 1767
1768 if (changes & BSS_CHANGED_ARP_FILTER) {
3c6acb61 1769 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2ee8f021
EP		 1770 iwl_mvm_configure_bcast_filter(mvm, vif);
1771 }
8ca151b5
JB		 1772}
1773
5023d966
JB		 1774static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1775 struct ieee80211_vif *vif)
8ca151b5
JB		 1776{
1777 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1778 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1779 int ret;
1780
576eeee9
EP		 1781 /*
1782 * iwl_mvm_mac_ctxt_add() might read directly from the device
1783 * (the system time), so make sure it is available.
1784 */
1785 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1786 if (ret)
1787 return ret;
1788
8ca151b5
JB		 1789 mutex_lock(&mvm->mutex);
1790
1791 /* Send the beacon template */
1792 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1793 if (ret)
1794 goto out_unlock;
1795
6e97b0d2
IP		 1796 /*
1797 * Re-calculate the tsf id, as the master-slave relations depend on the
1798 * beacon interval, which was not known when the AP interface was added.
1799 */
1800 if (vif->type == NL80211_IFTYPE_AP)
1801 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1802
8ca151b5
JB		 1803 /* Add the mac context */
1804 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1805 if (ret)
1806 goto out_unlock;
1807
1808 /* Perform the binding */
1809 ret = iwl_mvm_binding_add_vif(mvm, vif);
1810 if (ret)
1811 goto out_remove;
1812
8ca151b5
JB		 1813 /* Send the bcast station. At this stage the TBTT and DTIM time events
1814 * are added and applied to the scheduler */
013290aa 1815 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1816 if (ret)
1817 goto out_unbind;
1818
5691e218
IP		 1819 /* must be set before quota calculations */
1820 mvmvif->ap_ibss_active = true;
1821
a11e144e 1822 /* power updated needs to be done before quotas */
999609f1 1823 iwl_mvm_power_update_mac(mvm);
a11e144e 1824
0166230c 1825 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5 1826 if (ret)
a11e144e 1827 goto out_quota_failed;
8ca151b5 1828
5023d966 1829 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1830 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 1831 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 1832
29a90a49
EP		 1833 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1834
8e484f0b 1835 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1836
f697267f
AN		 1837 /* we don't support TDLS during DCM */
1838 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1839 iwl_mvm_teardown_tdls_peers(mvm);
1840
8ca151b5
JB		 1841 mutex_unlock(&mvm->mutex);
1842 return 0;
1843
a11e144e 1844out_quota_failed:
999609f1 1845 iwl_mvm_power_update_mac(mvm);
5691e218 1846 mvmvif->ap_ibss_active = false;
013290aa 1847 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5
JB		 1848out_unbind:
1849 iwl_mvm_binding_remove_vif(mvm, vif);
1850out_remove:
1851 iwl_mvm_mac_ctxt_remove(mvm, vif);
1852out_unlock:
1853 mutex_unlock(&mvm->mutex);
576eeee9 1854 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
8ca151b5
JB		 1855 return ret;
1856}
1857
5023d966
JB		 1858static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1859 struct ieee80211_vif *vif)
8ca151b5
JB		 1860{
1861 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1862 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1863
38a12b5b
JB		 1864 iwl_mvm_prepare_mac_removal(mvm, vif);
1865
8ca151b5
JB		 1866 mutex_lock(&mvm->mutex);
1867
664322fa 1868 /* Handle AP stop while in CSA */
7f0a7c67
AO		 1869 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1870 iwl_mvm_remove_time_event(mvm, mvmvif,
1871 &mvmvif->time_event_data);
664322fa 1872 RCU_INIT_POINTER(mvm->csa_vif, NULL);
7f0a7c67 1873 }
664322fa 1874
003e5236
AO		 1875 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1876 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1877 mvm->csa_tx_block_bcn_timeout = 0;
1878 }
1879
5023d966 1880 mvmvif->ap_ibss_active = false;
1c87bbad 1881 mvm->ap_last_beacon_gp2 = 0;
8ca151b5 1882
8e484f0b 1883 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1884
29a90a49
EP		 1885 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1886
5023d966 1887 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1888 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 1889 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 1890
0166230c 1891 iwl_mvm_update_quotas(mvm, NULL);
013290aa 1892 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5 1893 iwl_mvm_binding_remove_vif(mvm, vif);
a11e144e 1894
999609f1 1895 iwl_mvm_power_update_mac(mvm);
a11e144e 1896
8ca151b5
JB		 1897 iwl_mvm_mac_ctxt_remove(mvm, vif);
1898
1899 mutex_unlock(&mvm->mutex);
1900}
1901
5023d966
JB		 1902static void
1903iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1904 struct ieee80211_vif *vif,
1905 struct ieee80211_bss_conf *bss_conf,
1906 u32 changes)
8ca151b5 1907{
be2056fc 1908 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8a5e3660 1909
be2056fc
IP		 1910 /* Changes will be applied when the AP/IBSS is started */
1911 if (!mvmvif->ap_ibss_active)
1912 return;
1913
863230da 1914 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
f7d8b702 1915 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
3dfd3a97 1916 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
863230da 1917 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
8a5e3660 1918
8ca151b5 1919 /* Need to send a new beacon template to the FW */
863230da
JB		 1920 if (changes & BSS_CHANGED_BEACON &&
1921 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1922 IWL_WARN(mvm, "Failed updating beacon data\n");
79b7a69d
HD		 1923
1924 if (changes & BSS_CHANGED_TXPOWER) {
1925 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1926 bss_conf->txpower);
1927 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1928 }
1929
8ca151b5
JB		 1930}
1931
1932static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1933 struct ieee80211_vif *vif,
1934 struct ieee80211_bss_conf *bss_conf,
1935 u32 changes)
1936{
1937 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1938
576eeee9
EP		 1939 /*
1940 * iwl_mvm_bss_info_changed_station() might call
1941 * iwl_mvm_protect_session(), which reads directly from
1942 * the device (the system time), so make sure it is available.
1943 */
1944 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1945 return;
1946
8ca151b5
JB		 1947 mutex_lock(&mvm->mutex);
1948
723f02ed 1949 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
fb98be5e 1950 iwl_mvm_scan_offload_stop(mvm, true);
723f02ed 1951
8ca151b5
JB		 1952 switch (vif->type) {
1953 case NL80211_IFTYPE_STATION:
1954 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1955 break;
1956 case NL80211_IFTYPE_AP:
5023d966
JB		 1957 case NL80211_IFTYPE_ADHOC:
1958 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
8ca151b5
JB		 1959 break;
1960 default:
1961 /* shouldn't happen */
1962 WARN_ON_ONCE(1);
1963 }
1964
1965 mutex_unlock(&mvm->mutex);
576eeee9 1966 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
8ca151b5
JB		 1967}
1968
4660dfbb
EP		 1969static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1970 enum iwl_scan_status scan_type)
1971{
1972 int ret;
1973 bool wait_for_handlers = false;
1974
1975 mutex_lock(&mvm->mutex);
1976
1977 if (mvm->scan_status != scan_type) {
1978 ret = 0;
1979 /* make sure there are no pending notifications */
1980 wait_for_handlers = true;
1981 goto out;
1982 }
1983
1984 switch (scan_type) {
1985 case IWL_MVM_SCAN_SCHED:
1986 ret = iwl_mvm_scan_offload_stop(mvm, true);
1987 break;
1988 case IWL_MVM_SCAN_OS:
1989 ret = iwl_mvm_cancel_scan(mvm);
1990 break;
1991 case IWL_MVM_SCAN_NONE:
1992 default:
1993 WARN_ON_ONCE(1);
1994 ret = -EINVAL;
1995 break;
1996 }
1997 if (ret)
1998 goto out;
1999
2000 wait_for_handlers = true;
2001out:
2002 mutex_unlock(&mvm->mutex);
2003
2004 /* make sure we consume the completion notification */
2005 if (wait_for_handlers)
2006 iwl_mvm_wait_for_async_handlers(mvm);
2007
2008 return ret;
2009}
8ca151b5
JB		 2010static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2011 struct ieee80211_vif *vif,
c56ef672 2012 struct ieee80211_scan_request *hw_req)
8ca151b5
JB		 2013{
2014 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
c56ef672 2015 struct cfg80211_scan_request *req = &hw_req->req;
8ca151b5
JB		 2016 int ret;
2017
762533ba
DS		 2018 if (req->n_channels == 0 ||
2019 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
8ca151b5
JB		 2020 return -EINVAL;
2021
d2496221
DS		 2022 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2023 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
2024 if (ret)
2025 return ret;
2026 }
4660dfbb 2027
8ca151b5
JB		 2028 mutex_lock(&mvm->mutex);
2029
4660dfbb 2030 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
8ca151b5 2031 ret = -EBUSY;
519e2026
AN		 2032 goto out;
2033 }
8ca151b5 2034
519e2026
AN		 2035 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
2036
b975e55a 2037 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
d2496221 2038 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
b975e55a
DS		 2039 else if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
2040 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
fb98be5e
DS		 2041 else
2042 ret = iwl_mvm_scan_request(mvm, vif, req);
2043
519e2026
AN		 2044 if (ret)
2045 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
2046out:
8ca151b5 2047 mutex_unlock(&mvm->mutex);
8ca151b5
JB		 2048 return ret;
2049}
2050
2051static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2052 struct ieee80211_vif *vif)
2053{
2054 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2055
2056 mutex_lock(&mvm->mutex);
2057
2058 iwl_mvm_cancel_scan(mvm);
2059
2060 mutex_unlock(&mvm->mutex);
2061}
2062
2063static void
2064iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
3e56eadf 2065 struct ieee80211_sta *sta, u16 tids,
8ca151b5
JB		 2066 int num_frames,
2067 enum ieee80211_frame_release_type reason,
2068 bool more_data)
2069{
2070 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5 2071
3e56eadf 2072 /* Called when we need to transmit (a) frame(s) from mac80211 */
8ca151b5 2073
3e56eadf
JB		 2074 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2075 tids, more_data, false);
2076}
2077
2078static void
2079iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2080 struct ieee80211_sta *sta, u16 tids,
2081 int num_frames,
2082 enum ieee80211_frame_release_type reason,
2083 bool more_data)
2084{
2085 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2086
2087 /* Called when we need to transmit (a) frame(s) from agg queue */
2088
2089 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2090 tids, more_data, true);
8ca151b5
JB		 2091}
2092
2093static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2094 struct ieee80211_vif *vif,
2095 enum sta_notify_cmd cmd,
2096 struct ieee80211_sta *sta)
2097{
2098 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5b577a90 2099 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3e56eadf 2100 int tid;
8ca151b5
JB		 2101
2102 switch (cmd) {
2103 case STA_NOTIFY_SLEEP:
e3d4bc8c 2104 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5 2105 ieee80211_sta_block_awake(hw, sta, true);
3e56eadf
JB		 2106 spin_lock_bh(&mvmsta->lock);
2107 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2108 struct iwl_mvm_tid_data *tid_data;
2109
2110 tid_data = &mvmsta->tid_data[tid];
2111 if (tid_data->state != IWL_AGG_ON &&
2112 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2113 continue;
2114 if (iwl_mvm_tid_queued(tid_data) == 0)
2115 continue;
2116 ieee80211_sta_set_buffered(sta, tid, true);
2117 }
2118 spin_unlock_bh(&mvmsta->lock);
8ca151b5
JB		 2119 /*
2120 * The fw updates the STA to be asleep. Tx packets on the Tx
2121 * queues to this station will not be transmitted. The fw will
2122 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2123 */
2124 break;
2125 case STA_NOTIFY_AWAKE:
881acd89 2126 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
8ca151b5 2127 break;
9cc40712 2128 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 2129 break;
2130 default:
2131 break;
2132 }
2133}
2134
1ddbbb0c
JB		 2135static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2136 struct ieee80211_vif *vif,
2137 struct ieee80211_sta *sta)
2138{
2139 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2140 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2141
2142 /*
2143 * This is called before mac80211 does RCU synchronisation,
2144 * so here we already invalidate our internal RCU-protected
2145 * station pointer. The rest of the code will thus no longer
2146 * be able to find the station this way, and we don't rely
2147 * on further RCU synchronisation after the sta_state()
2148 * callback deleted the station.
2149 */
2150 mutex_lock(&mvm->mutex);
2151 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2152 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2153 ERR_PTR(-ENOENT));
2154 mutex_unlock(&mvm->mutex);
2155}
2156
8ca151b5
JB		 2157static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2158 struct ieee80211_vif *vif,
2159 struct ieee80211_sta *sta,
2160 enum ieee80211_sta_state old_state,
2161 enum ieee80211_sta_state new_state)
2162{
2163 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2164 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2165 int ret;
2166
2167 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2168 sta->addr, old_state, new_state);
2169
2170 /* this would be a mac80211 bug ... but don't crash */
2171 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2172 return -EINVAL;
2173
2174 /* if a STA is being removed, reuse its ID */
2175 flush_work(&mvm->sta_drained_wk);
2176
2177 mutex_lock(&mvm->mutex);
2178 if (old_state == IEEE80211_STA_NOTEXIST &&
2179 new_state == IEEE80211_STA_NONE) {
48bc1307
JB		 2180 /*
2181 * Firmware bug - it'll crash if the beacon interval is less
2182 * than 16. We can't avoid connecting at all, so refuse the
2183 * station state change, this will cause mac80211 to abandon
2184 * attempts to connect to this AP, and eventually wpa_s will
2185 * blacklist the AP...
2186 */
2187 if (vif->type == NL80211_IFTYPE_STATION &&
2188 vif->bss_conf.beacon_int < 16) {
2189 IWL_ERR(mvm,
2190 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2191 sta->addr, vif->bss_conf.beacon_int);
2192 ret = -EINVAL;
2193 goto out_unlock;
2194 }
cf7b491d
AN		 2195
2196 if (sta->tdls &&
2197 (vif->p2p ||
fa3d07e4
AN		 2198 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2199 IWL_MVM_TDLS_STA_COUNT ||
cf7b491d
AN		 2200 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2201 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2202 ret = -EBUSY;
2203 goto out_unlock;
2204 }
2205
8ca151b5 2206 ret = iwl_mvm_add_sta(mvm, vif, sta);
fa3d07e4
AN		 2207 if (sta->tdls && ret == 0)
2208 iwl_mvm_recalc_tdls_state(mvm, vif, true);
8ca151b5
JB		 2209 } else if (old_state == IEEE80211_STA_NONE &&
2210 new_state == IEEE80211_STA_AUTH) {
e820c2da
HD		 2211 /*
2212 * EBS may be disabled due to previous failures reported by FW.
2213 * Reset EBS status here assuming environment has been changed.
2214 */
2215 mvm->last_ebs_successful = true;
8ca151b5
JB		 2216 ret = 0;
2217 } else if (old_state == IEEE80211_STA_AUTH &&
2218 new_state == IEEE80211_STA_ASSOC) {
7a453973
JB		 2219 ret = iwl_mvm_update_sta(mvm, vif, sta);
2220 if (ret == 0)
2221 iwl_mvm_rs_rate_init(mvm, sta,
b87c2179
ES		 2222 mvmvif->phy_ctxt->channel->band,
2223 true);
8ca151b5
JB		 2224 } else if (old_state == IEEE80211_STA_ASSOC &&
2225 new_state == IEEE80211_STA_AUTHORIZED) {
f59e0e3c
AN		 2226
2227 /* we don't support TDLS during DCM */
2228 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2229 iwl_mvm_teardown_tdls_peers(mvm);
2230
7df15b1e 2231 /* enable beacon filtering */
fa7b2e7f 2232 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2233 ret = 0;
2234 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2235 new_state == IEEE80211_STA_ASSOC) {
7df15b1e 2236 /* disable beacon filtering */
a1022927 2237 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2238 ret = 0;
2239 } else if (old_state == IEEE80211_STA_ASSOC &&
2240 new_state == IEEE80211_STA_AUTH) {
2241 ret = 0;
2242 } else if (old_state == IEEE80211_STA_AUTH &&
2243 new_state == IEEE80211_STA_NONE) {
2244 ret = 0;
2245 } else if (old_state == IEEE80211_STA_NONE &&
2246 new_state == IEEE80211_STA_NOTEXIST) {
2247 ret = iwl_mvm_rm_sta(mvm, vif, sta);
fa3d07e4
AN		 2248 if (sta->tdls)
2249 iwl_mvm_recalc_tdls_state(mvm, vif, false);
8ca151b5
JB		 2250 } else {
2251 ret = -EIO;
2252 }
48bc1307 2253 out_unlock:
8ca151b5
JB		 2254 mutex_unlock(&mvm->mutex);
2255
9c126cd6
LK		 2256 if (sta->tdls && ret == 0) {
2257 if (old_state == IEEE80211_STA_NOTEXIST &&
2258 new_state == IEEE80211_STA_NONE)
2259 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2260 else if (old_state == IEEE80211_STA_NONE &&
2261 new_state == IEEE80211_STA_NOTEXIST)
2262 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2263 }
2264
8ca151b5
JB		 2265 return ret;
2266}
2267
2268static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2269{
2270 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2271
2272 mvm->rts_threshold = value;
2273
2274 return 0;
2275}
2276
1f3b0ff8
LE		 2277static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2278 struct ieee80211_vif *vif,
2279 struct ieee80211_sta *sta, u32 changed)
2280{
2281 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2282
2283 if (vif->type == NL80211_IFTYPE_STATION &&
2284 changed & IEEE80211_RC_NSS_CHANGED)
2285 iwl_mvm_sf_update(mvm, vif, false);
2286}
2287
8ca151b5
JB		 2288static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2289 struct ieee80211_vif *vif, u16 ac,
2290 const struct ieee80211_tx_queue_params *params)
2291{
2292 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2293 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2294
2295 mvmvif->queue_params[ac] = *params;
2296
2297 /*
2298 * No need to update right away, we'll get BSS_CHANGED_QOS
2299 * The exception is P2P_DEVICE interface which needs immediate update.
2300 */
2301 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2302 int ret;
2303
2304 mutex_lock(&mvm->mutex);
3dfd3a97 2305 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
8ca151b5
JB		 2306 mutex_unlock(&mvm->mutex);
2307 return ret;
2308 }
2309 return 0;
2310}
2311
2312static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2313 struct ieee80211_vif *vif)
2314{
2315 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2316 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2317 200 + vif->bss_conf.beacon_int);
2318 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2319 100 + vif->bss_conf.beacon_int);
2320
2321 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2322 return;
2323
576eeee9
EP		 2324 /*
2325 * iwl_mvm_protect_session() reads directly from the device
2326 * (the system time), so make sure it is available.
2327 */
2328 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2329 return;
2330
8ca151b5
JB		 2331 mutex_lock(&mvm->mutex);
2332 /* Try really hard to protect the session and hear a beacon */
d20d37bc 2333 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
8ca151b5 2334 mutex_unlock(&mvm->mutex);
576eeee9
EP		 2335
2336 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
8ca151b5
JB		 2337}
2338
35a000b7
DS		 2339static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2340 struct ieee80211_vif *vif,
2341 struct cfg80211_sched_scan_request *req,
633e2713 2342 struct ieee80211_scan_ies *ies)
35a000b7
DS		 2343{
2344 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2345 int ret;
2346
d2496221
DS		 2347 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2348 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2349 if (ret)
2350 return ret;
2351 }
4660dfbb 2352
35a000b7
DS		 2353 mutex_lock(&mvm->mutex);
2354
59ecb128
AB		 2355 /* Newest FW fixes sched scan while connected on another interface */
2356 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2357 if (!vif->bss_conf.idle) {
2358 ret = -EBUSY;
2359 goto out;
2360 }
2361 } else if (!iwl_mvm_is_idle(mvm)) {
bd5e4744
DS		 2362 ret = -EBUSY;
2363 goto out;
2364 }
2365
4660dfbb 2366 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
35a000b7
DS		 2367 ret = -EBUSY;
2368 goto out;
2369 }
2370
b141c235 2371 ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
35a000b7 2372 if (ret)
b141c235 2373 mvm->scan_status = IWL_MVM_SCAN_NONE;
d2496221 2374
35a000b7
DS		 2375out:
2376 mutex_unlock(&mvm->mutex);
2377 return ret;
2378}
2379
37e3308c
JB		 2380static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2381 struct ieee80211_vif *vif)
35a000b7
DS		 2382{
2383 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
33ea27f6 2384 int ret;
35a000b7
DS		 2385
2386 mutex_lock(&mvm->mutex);
fb98be5e 2387 ret = iwl_mvm_scan_offload_stop(mvm, false);
35a000b7 2388 mutex_unlock(&mvm->mutex);
33ea27f6 2389 iwl_mvm_wait_for_async_handlers(mvm);
37e3308c 2390
33ea27f6 2391 return ret;
d2496221 2392
35a000b7
DS		 2393}
2394
8ca151b5
JB		 2395static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2396 enum set_key_cmd cmd,
2397 struct ieee80211_vif *vif,
2398 struct ieee80211_sta *sta,
2399 struct ieee80211_key_conf *key)
2400{
2401 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2402 int ret;
2403
2404 if (iwlwifi_mod_params.sw_crypto) {
2405 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2406 return -EOPNOTSUPP;
2407 }
2408
2409 switch (key->cipher) {
2410 case WLAN_CIPHER_SUITE_TKIP:
2411 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2412 /* fall-through */
2413 case WLAN_CIPHER_SUITE_CCMP:
2414 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2415 break;
2416 case WLAN_CIPHER_SUITE_AES_CMAC:
2417 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2418 break;
2419 case WLAN_CIPHER_SUITE_WEP40:
2420 case WLAN_CIPHER_SUITE_WEP104:
ba3943b0
JB		 2421 /* For non-client mode, only use WEP keys for TX as we probably
2422 * don't have a station yet anyway and would then have to keep
2423 * track of the keys, linking them to each of the clients/peers
2424 * as they appear. For now, don't do that, for performance WEP
2425 * offload doesn't really matter much, but we need it for some
2426 * other offload features in client mode.
8ca151b5 2427 */
ba3943b0
JB		 2428 if (vif->type != NL80211_IFTYPE_STATION)
2429 return 0;
2430 break;
8ca151b5 2431 default:
e36e5433
MS		 2432 /* currently FW supports only one optional cipher scheme */
2433 if (hw->n_cipher_schemes &&
2434 hw->cipher_schemes->cipher == key->cipher)
2435 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2436 else
2437 return -EOPNOTSUPP;
8ca151b5
JB		 2438 }
2439
2440 mutex_lock(&mvm->mutex);
2441
2442 switch (cmd) {
2443 case SET_KEY:
5023d966
JB		 2444 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2445 vif->type == NL80211_IFTYPE_AP) && !sta) {
2446 /*
2447 * GTK on AP interface is a TX-only key, return 0;
2448 * on IBSS they're per-station and because we're lazy
2449 * we don't support them for RX, so do the same.
2450 */
6caffd4f
JB		 2451 ret = 0;
2452 key->hw_key_idx = STA_KEY_IDX_INVALID;
2453 break;
2454 }
2455
8ca151b5
JB		 2456 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2457 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2458 if (ret) {
2459 IWL_WARN(mvm, "set key failed\n");
2460 /*
2461 * can't add key for RX, but we don't need it
2462 * in the device for TX so still return 0
2463 */
6caffd4f 2464 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 2465 ret = 0;
2466 }
2467
2468 break;
2469 case DISABLE_KEY:
6caffd4f
JB		 2470 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2471 ret = 0;
2472 break;
2473 }
2474
8ca151b5
JB		 2475 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2476 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2477 break;
2478 default:
2479 ret = -EINVAL;
2480 }
2481
2482 mutex_unlock(&mvm->mutex);
2483 return ret;
2484}
2485
2486static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2487 struct ieee80211_vif *vif,
2488 struct ieee80211_key_conf *keyconf,
2489 struct ieee80211_sta *sta,
2490 u32 iv32, u16 *phase1key)
2491{
2492 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2493
5023d966
JB		 2494 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2495 return;
2496
8ca151b5
JB		 2497 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2498}
2499
2500
b112889c
AM		 2501static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2502 struct iwl_rx_packet *pkt, void *data)
2503{
2504 struct iwl_mvm *mvm =
2505 container_of(notif_wait, struct iwl_mvm, notif_wait);
2506 struct iwl_hs20_roc_res *resp;
2507 int resp_len = iwl_rx_packet_payload_len(pkt);
2508 struct iwl_mvm_time_event_data *te_data = data;
2509
2510 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2511 return true;
2512
2513 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2514 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2515 return true;
2516 }
2517
2518 resp = (void *)pkt->data;
2519
2520 IWL_DEBUG_TE(mvm,
2521 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2522 resp->status, resp->event_unique_id);
2523
2524 te_data->uid = le32_to_cpu(resp->event_unique_id);
2525 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2526 te_data->uid);
2527
2528 spin_lock_bh(&mvm->time_event_lock);
2529 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2530 spin_unlock_bh(&mvm->time_event_lock);
2531
2532 return true;
2533}
2534
2535#define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2536static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2537 struct ieee80211_channel *channel,
2538 struct ieee80211_vif *vif,
2539 int duration)
2540{
2541 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2542 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2543 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2544 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2545 struct iwl_notification_wait wait_time_event;
2546 struct iwl_hs20_roc_req aux_roc_req = {
2547 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2548 .id_and_color =
2549 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2550 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2551 /* Set the channel info data */
2552 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2553 PHY_BAND_24 : PHY_BAND_5,
2554 .channel_info.channel = channel->hw_value,
2555 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2556 /* Set the time and duration */
2557 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2558 .apply_time_max_delay =
2559 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2560 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2561 };
2562
2563 /* Set the node address */
2564 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2565
a6cc5163
MG		 2566 lockdep_assert_held(&mvm->mutex);
2567
2568 spin_lock_bh(&mvm->time_event_lock);
2569
2570 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2571 spin_unlock_bh(&mvm->time_event_lock);
2572 return -EIO;
2573 }
2574
b112889c
AM		 2575 te_data->vif = vif;
2576 te_data->duration = duration;
2577 te_data->id = HOT_SPOT_CMD;
2578
b112889c
AM		 2579 spin_unlock_bh(&mvm->time_event_lock);
2580
2581 /*
2582 * Use a notification wait, which really just processes the
2583 * command response and doesn't wait for anything, in order
2584 * to be able to process the response and get the UID inside
2585 * the RX path. Using CMD_WANT_SKB doesn't work because it
2586 * stores the buffer and then wakes up this thread, by which
2587 * time another notification (that the time event started)
2588 * might already be processed unsuccessfully.
2589 */
2590 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2591 time_event_response,
2592 ARRAY_SIZE(time_event_response),
2593 iwl_mvm_rx_aux_roc, te_data);
2594
2595 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2596 &aux_roc_req);
2597
2598 if (res) {
2599 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2600 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2601 goto out_clear_te;
2602 }
2603
2604 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2605 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2606 /* should never fail */
2607 WARN_ON_ONCE(res);
2608
2609 if (res) {
2610 out_clear_te:
2611 spin_lock_bh(&mvm->time_event_lock);
2612 iwl_mvm_te_clear_data(mvm, te_data);
2613 spin_unlock_bh(&mvm->time_event_lock);
2614 }
2615
2616 return res;
2617}
2618
8ca151b5
JB		 2619static int iwl_mvm_roc(struct ieee80211_hw *hw,
2620 struct ieee80211_vif *vif,
2621 struct ieee80211_channel *channel,
d339d5ca
IP		 2622 int duration,
2623 enum ieee80211_roc_type type)
8ca151b5
JB		 2624{
2625 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 2626 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 2627 struct cfg80211_chan_def chandef;
31d385ae
IP		 2628 struct iwl_mvm_phy_ctxt *phy_ctxt;
2629 int ret, i;
2630
2631 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2632 duration, type);
8ca151b5 2633
a6cc5163
MG		 2634 mutex_lock(&mvm->mutex);
2635
b112889c
AM		 2636 switch (vif->type) {
2637 case NL80211_IFTYPE_STATION:
5ac6c72e
LC		 2638 if (mvm->fw->ucode_capa.capa[0] &
2639 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
2640 /* Use aux roc framework (HS20) */
2641 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2642 vif, duration);
2643 goto out_unlock;
2644 }
2645 IWL_ERR(mvm, "hotspot not supported\n");
2646 ret = -EINVAL;
a6cc5163 2647 goto out_unlock;
b112889c
AM		 2648 case NL80211_IFTYPE_P2P_DEVICE:
2649 /* handle below */
2650 break;
2651 default:
2652 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
a6cc5163
MG		 2653 ret = -EINVAL;
2654 goto out_unlock;
8ca151b5
JB		 2655 }
2656
31d385ae
IP		 2657 for (i = 0; i < NUM_PHY_CTX; i++) {
2658 phy_ctxt = &mvm->phy_ctxts[i];
2659 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2660 continue;
2661
2662 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2663 /*
2664 * Unbind the P2P_DEVICE from the current PHY context,
2665 * and if the PHY context is not used remove it.
2666 */
2667 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2668 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2669 goto out_unlock;
2670
2671 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2672
2673 /* Bind the P2P_DEVICE to the current PHY Context */
2674 mvmvif->phy_ctxt = phy_ctxt;
2675
2676 ret = iwl_mvm_binding_add_vif(mvm, vif);
2677 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2678 goto out_unlock;
2679
2680 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2681 goto schedule_time_event;
2682 }
2683 }
2684
2685 /* Need to update the PHY context only if the ROC channel changed */
2686 if (channel == mvmvif->phy_ctxt->channel)
2687 goto schedule_time_event;
2688
8ca151b5 2689 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 2690
31d385ae
IP		 2691 /*
2692 * Change the PHY context configuration as it is currently referenced
2693 * only by the P2P Device MAC
2694 */
2695 if (mvmvif->phy_ctxt->ref == 1) {
2696 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2697 &chandef, 1, 1);
2698 if (ret)
2699 goto out_unlock;
2700 } else {
2701 /*
2702 * The PHY context is shared with other MACs. Need to remove the
2703 * P2P Device from the binding, allocate an new PHY context and
2704 * create a new binding
2705 */
2706 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2707 if (!phy_ctxt) {
2708 ret = -ENOSPC;
2709 goto out_unlock;
2710 }
2711
2712 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2713 1, 1);
2714 if (ret) {
2715 IWL_ERR(mvm, "Failed to change PHY context\n");
2716 goto out_unlock;
2717 }
2718
2719 /* Unbind the P2P_DEVICE from the current PHY context */
2720 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2721 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2722 goto out_unlock;
2723
2724 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2725
2726 /* Bind the P2P_DEVICE to the new allocated PHY context */
2727 mvmvif->phy_ctxt = phy_ctxt;
2728
2729 ret = iwl_mvm_binding_add_vif(mvm, vif);
2730 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2731 goto out_unlock;
2732
2733 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2734 }
2735
2736schedule_time_event:
8ca151b5 2737 /* Schedule the time events */
e635c797 2738 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 2739
31d385ae 2740out_unlock:
8ca151b5
JB		 2741 mutex_unlock(&mvm->mutex);
2742 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 2743 return ret;
2744}
2745
2746static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2747{
2748 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2749
2750 IWL_DEBUG_MAC80211(mvm, "enter\n");
2751
2752 mutex_lock(&mvm->mutex);
bf5da87f 2753 iwl_mvm_stop_roc(mvm);
8ca151b5
JB		 2754 mutex_unlock(&mvm->mutex);
2755
2756 IWL_DEBUG_MAC80211(mvm, "leave\n");
2757 return 0;
2758}
2759
b08c1d97
LC		 2760static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2761 struct ieee80211_chanctx_conf *ctx)
8ca151b5 2762{
fe0f2de3
IP		 2763 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2764 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 2765 int ret;
2766
b08c1d97
LC		 2767 lockdep_assert_held(&mvm->mutex);
2768
53a9d61e 2769 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 2770
fe0f2de3
IP		 2771 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2772 if (!phy_ctxt) {
2773 ret = -ENOSPC;
2774 goto out;
2775 }
8ca151b5 2776
dcbc3e1a 2777 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
53a9d61e
IP		 2778 ctx->rx_chains_static,
2779 ctx->rx_chains_dynamic);
fe0f2de3
IP		 2780 if (ret) {
2781 IWL_ERR(mvm, "Failed to add PHY context\n");
2782 goto out;
2783 }
2784
53a9d61e 2785 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 2786 *phy_ctxt_id = phy_ctxt->id;
2787out:
b08c1d97
LC		 2788 return ret;
2789}
2790
2791static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2792 struct ieee80211_chanctx_conf *ctx)
2793{
2794 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2795 int ret;
2796
2797 mutex_lock(&mvm->mutex);
2798 ret = __iwl_mvm_add_chanctx(mvm, ctx);
8ca151b5 2799 mutex_unlock(&mvm->mutex);
b08c1d97 2800
8ca151b5
JB		 2801 return ret;
2802}
2803
b08c1d97
LC		 2804static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2805 struct ieee80211_chanctx_conf *ctx)
2806{
2807 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2808 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2809
2810 lockdep_assert_held(&mvm->mutex);
2811
2812 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2813}
2814
8ca151b5
JB		 2815static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2816 struct ieee80211_chanctx_conf *ctx)
2817{
2818 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 2819
2820 mutex_lock(&mvm->mutex);
b08c1d97 2821 __iwl_mvm_remove_chanctx(mvm, ctx);
8ca151b5
JB		 2822 mutex_unlock(&mvm->mutex);
2823}
2824
2825static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2826 struct ieee80211_chanctx_conf *ctx,
2827 u32 changed)
2828{
2829 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 2830 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2831 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 2832
31d385ae
IP		 2833 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2834 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2835 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2dceedae
AN		 2836 IEEE80211_CHANCTX_CHANGE_RADAR |
2837 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
31d385ae
IP		 2838 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2839 phy_ctxt->ref, changed))
2840 return;
2841
8ca151b5 2842 mutex_lock(&mvm->mutex);
4d66449a 2843 iwl_mvm_bt_coex_vif_change(mvm);
dcbc3e1a 2844 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
8ca151b5
JB		 2845 ctx->rx_chains_static,
2846 ctx->rx_chains_dynamic);
2847 mutex_unlock(&mvm->mutex);
2848}
2849
b08c1d97
LC		 2850static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2851 struct ieee80211_vif *vif,
f0c97783
LC		 2852 struct ieee80211_chanctx_conf *ctx,
2853 bool switching_chanctx)
8ca151b5 2854{
fe0f2de3
IP		 2855 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2856 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 2857 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2858 int ret;
2859
b08c1d97 2860 lockdep_assert_held(&mvm->mutex);
8ca151b5 2861
fe0f2de3 2862 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 2863
2864 switch (vif->type) {
2865 case NL80211_IFTYPE_AP:
4741dd04
LC		 2866 /* only needed if we're switching chanctx (i.e. during CSA) */
2867 if (switching_chanctx) {
bd3398e2
AO		 2868 mvmvif->ap_ibss_active = true;
2869 break;
2870 }
5023d966 2871 case NL80211_IFTYPE_ADHOC:
8ca151b5
JB		 2872 /*
2873 * The AP binding flow is handled as part of the start_ap flow
5023d966 2874 * (in bss_info_changed), similarly for IBSS.
8ca151b5
JB		 2875 */
2876 ret = 0;
b08c1d97 2877 goto out;
8ca151b5 2878 case NL80211_IFTYPE_STATION:
2533edce 2879 break;
8ca151b5 2880 case NL80211_IFTYPE_MONITOR:
2533edce
LC		 2881 /* always disable PS when a monitor interface is active */
2882 mvmvif->ps_disabled = true;
8ca151b5
JB		 2883 break;
2884 default:
2885 ret = -EINVAL;
b08c1d97 2886 goto out;
8ca151b5
JB		 2887 }
2888
2889 ret = iwl_mvm_binding_add_vif(mvm, vif);
2890 if (ret)
b08c1d97 2891 goto out;
8ca151b5
JB		 2892
2893 /*
92d85562
AB		 2894 * Power state must be updated before quotas,
2895 * otherwise fw will complain.
2896 */
999609f1 2897 iwl_mvm_power_update_mac(mvm);
92d85562
AB		 2898
2899 /* Setting the quota at this stage is only required for monitor
8ca151b5
JB		 2900 * interfaces. For the other types, the bss_info changed flow
2901 * will handle quota settings.
2902 */
2903 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 2904 mvmvif->monitor_active = true;
0166230c 2905 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 2906 if (ret)
2907 goto out_remove_binding;
2908 }
2909
bd3398e2 2910 /* Handle binding during CSA */
a57c688d 2911 if (vif->type == NL80211_IFTYPE_AP) {
0166230c 2912 iwl_mvm_update_quotas(mvm, NULL);
3dfd3a97 2913 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
bd3398e2
AO		 2914 }
2915
4741dd04 2916 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
686e7fe1
LC		 2917 u32 duration = 2 * vif->bss_conf.beacon_int;
2918
2919 /* iwl_mvm_protect_session() reads directly from the
2920 * device (the system time), so make sure it is
2921 * available.
2922 */
2923 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
2924 if (ret)
2925 goto out_remove_binding;
2926
2927 /* Protect the session to make sure we hear the first
2928 * beacon on the new channel.
2929 */
2930 iwl_mvm_protect_session(mvm, vif, duration, duration,
2931 vif->bss_conf.beacon_int / 2,
2932 true);
2933
2934 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
2935
a57c688d 2936 iwl_mvm_update_quotas(mvm, NULL);
0ce04ce7
LC		 2937 }
2938
b08c1d97 2939 goto out;
8ca151b5 2940
b08c1d97 2941out_remove_binding:
8ca151b5 2942 iwl_mvm_binding_remove_vif(mvm, vif);
999609f1 2943 iwl_mvm_power_update_mac(mvm);
b08c1d97 2944out:
8ca151b5
JB		 2945 if (ret)
2946 mvmvif->phy_ctxt = NULL;
2947 return ret;
2948}
b08c1d97
LC		 2949static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2950 struct ieee80211_vif *vif,
2951 struct ieee80211_chanctx_conf *ctx)
8ca151b5
JB		 2952{
2953 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
b08c1d97 2954 int ret;
8ca151b5
JB		 2955
2956 mutex_lock(&mvm->mutex);
f0c97783 2957 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
b08c1d97
LC		 2958 mutex_unlock(&mvm->mutex);
2959
2960 return ret;
2961}
2962
2963static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2964 struct ieee80211_vif *vif,
f0c97783
LC		 2965 struct ieee80211_chanctx_conf *ctx,
2966 bool switching_chanctx)
b08c1d97
LC		 2967{
2968 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
f0c97783 2969 struct ieee80211_vif *disabled_vif = NULL;
b08c1d97
LC		 2970
2971 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 2972
2973 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2974
8ca151b5 2975 switch (vif->type) {
5023d966 2976 case NL80211_IFTYPE_ADHOC:
b08c1d97 2977 goto out;
8ca151b5 2978 case NL80211_IFTYPE_MONITOR:
1e1391ca 2979 mvmvif->monitor_active = false;
2533edce 2980 mvmvif->ps_disabled = false;
8ca151b5 2981 break;
bd3398e2
AO		 2982 case NL80211_IFTYPE_AP:
2983 /* This part is triggered only during CSA */
4741dd04 2984 if (!switching_chanctx || !mvmvif->ap_ibss_active)
b08c1d97 2985 goto out;
bd3398e2 2986
7ef0aab6
AO		 2987 mvmvif->csa_countdown = false;
2988
003e5236
AO		 2989 /* Set CS bit on all the stations */
2990 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2991
2992 /* Save blocked iface, the timeout is set on the next beacon */
2993 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2994
bd3398e2 2995 mvmvif->ap_ibss_active = false;
f0c97783
LC		 2996 break;
2997 case NL80211_IFTYPE_STATION:
2998 if (!switching_chanctx)
2999 break;
3000
3001 disabled_vif = vif;
3002
3dfd3a97 3003 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
f0c97783 3004 break;
8ca151b5
JB		 3005 default:
3006 break;
3007 }
3008
f0c97783 3009 iwl_mvm_update_quotas(mvm, disabled_vif);
1e1391ca 3010 iwl_mvm_binding_remove_vif(mvm, vif);
1c2abf72 3011
b08c1d97 3012out:
a11e144e 3013 mvmvif->phy_ctxt = NULL;
999609f1 3014 iwl_mvm_power_update_mac(mvm);
b08c1d97
LC		 3015}
3016
3017static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3018 struct ieee80211_vif *vif,
3019 struct ieee80211_chanctx_conf *ctx)
3020{
3021 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3022
3023 mutex_lock(&mvm->mutex);
f0c97783 3024 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
8ca151b5
JB		 3025 mutex_unlock(&mvm->mutex);
3026}
3027
50cc9574
LC		 3028static int
3029iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3030 struct ieee80211_vif_chanctx_switch *vifs)
b08c1d97 3031{
b08c1d97
LC		 3032 int ret;
3033
b08c1d97 3034 mutex_lock(&mvm->mutex);
f0c97783 3035 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
b08c1d97
LC		 3036 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3037
3038 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3039 if (ret) {
3040 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3041 goto out_reassign;
3042 }
3043
f0c97783
LC		 3044 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3045 true);
b08c1d97
LC		 3046 if (ret) {
3047 IWL_ERR(mvm,
3048 "failed to assign new_ctx during channel switch\n");
3049 goto out_remove;
3050 }
3051
f697267f
AN		 3052 /* we don't support TDLS during DCM - can be caused by channel switch */
3053 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3054 iwl_mvm_teardown_tdls_peers(mvm);
3055
b08c1d97
LC		 3056 goto out;
3057
3058out_remove:
3059 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3060
3061out_reassign:
6fd1fb63 3062 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
b08c1d97
LC		 3063 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3064 goto out_restart;
3065 }
3066
6fd1fb63
LC		 3067 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3068 true)) {
b08c1d97
LC		 3069 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3070 goto out_restart;
3071 }
3072
3073 goto out;
3074
3075out_restart:
3076 /* things keep failing, better restart the hw */
3077 iwl_mvm_nic_restart(mvm, false);
3078
3079out:
3080 mutex_unlock(&mvm->mutex);
50cc9574
LC		 3081
3082 return ret;
3083}
3084
48a256e8
LC		 3085static int
3086iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3087 struct ieee80211_vif_chanctx_switch *vifs)
3088{
3089 int ret;
3090
3091 mutex_lock(&mvm->mutex);
3092 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3093
3094 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3095 true);
3096 if (ret) {
3097 IWL_ERR(mvm,
3098 "failed to assign new_ctx during channel switch\n");
3099 goto out_reassign;
3100 }
3101
3102 goto out;
3103
3104out_reassign:
3105 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3106 true)) {
3107 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3108 goto out_restart;
3109 }
3110
3111 goto out;
3112
3113out_restart:
3114 /* things keep failing, better restart the hw */
3115 iwl_mvm_nic_restart(mvm, false);
3116
3117out:
3118 mutex_unlock(&mvm->mutex);
3119
3120 return ret;
3121}
3122
50cc9574
LC		 3123static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3124 struct ieee80211_vif_chanctx_switch *vifs,
3125 int n_vifs,
3126 enum ieee80211_chanctx_switch_mode mode)
3127{
3128 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3129 int ret;
3130
3131 /* we only support a single-vif right now */
3132 if (n_vifs > 1)
3133 return -EOPNOTSUPP;
3134
3135 switch (mode) {
3136 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3137 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3138 break;
3139 case CHANCTX_SWMODE_REASSIGN_VIF:
48a256e8 3140 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
50cc9574
LC		 3141 break;
3142 default:
3143 ret = -EOPNOTSUPP;
3144 break;
3145 }
3146
b08c1d97
LC		 3147 return ret;
3148}
3149
8ca151b5
JB		 3150static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3151 struct ieee80211_sta *sta,
3152 bool set)
3153{
3154 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3155 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
3156
3157 if (!mvm_sta || !mvm_sta->vif) {
3158 IWL_ERR(mvm, "Station is not associated to a vif\n");
3159 return -EINVAL;
3160 }
3161
3162 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3163}
3164
507cadf2
DS		 3165#ifdef CONFIG_NL80211_TESTMODE
3166static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3167 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3168 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
f6c6ad42 3169 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
507cadf2
DS		 3170};
3171
3172static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3173 struct ieee80211_vif *vif,
3174 void *data, int len)
3175{
3176 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3177 int err;
3178 u32 noa_duration;
3179
3180 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3181 if (err)
3182 return err;
3183
3184 if (!tb[IWL_MVM_TM_ATTR_CMD])
3185 return -EINVAL;
3186
3187 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3188 case IWL_MVM_TM_CMD_SET_NOA:
3189 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3190 !vif->bss_conf.enable_beacon ||
3191 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3192 return -EINVAL;
3193
3194 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3195 if (noa_duration >= vif->bss_conf.beacon_int)
3196 return -EINVAL;
3197
3198 mvm->noa_duration = noa_duration;
3199 mvm->noa_vif = vif;
3200
0166230c 3201 return iwl_mvm_update_quotas(mvm, NULL);
f6c6ad42
JB		 3202 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3203 /* must be associated client vif - ignore authorized */
3204 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3205 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3206 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3207 return -EINVAL;
3208
3209 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
a1022927
EG		 3210 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3211 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
507cadf2
DS		 3212 }
3213
3214 return -EOPNOTSUPP;
3215}
3216
3217static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3218 struct ieee80211_vif *vif,
3219 void *data, int len)
3220{
3221 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3222 int err;
3223
3224 mutex_lock(&mvm->mutex);
3225 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3226 mutex_unlock(&mvm->mutex);
3227
3228 return err;
3229}
3230#endif
3231
622e3f9b
LC		 3232static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3233 struct ieee80211_vif *vif,
3234 struct ieee80211_channel_switch *chsw)
3235{
3236 /* By implementing this operation, we prevent mac80211 from
3237 * starting its own channel switch timer, so that we can call
3238 * ieee80211_chswitch_done() ourselves at the right time
3239 * (which is when the absence time event starts).
3240 */
3241
3242 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3243 "dummy channel switch op\n");
3244}
3245
f028905c
LC		 3246static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3247 struct ieee80211_vif *vif,
3248 struct ieee80211_channel_switch *chsw)
bd3398e2
AO		 3249{
3250 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
664322fa 3251 struct ieee80211_vif *csa_vif;
f6c34820 3252 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
dc88b4ba 3253 u32 apply_time;
f028905c 3254 int ret;
bd3398e2
AO		 3255
3256 mutex_lock(&mvm->mutex);
664322fa 3257
6b20d774 3258 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
f028905c 3259 chsw->chandef.center_freq1);
6b20d774
LC		 3260
3261 switch (vif->type) {
3262 case NL80211_IFTYPE_AP:
3263 csa_vif =
3264 rcu_dereference_protected(mvm->csa_vif,
3265 lockdep_is_held(&mvm->mutex));
3266 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3267 "Another CSA is already in progress")) {
3268 ret = -EBUSY;
3269 goto out_unlock;
3270 }
3271
3272 rcu_assign_pointer(mvm->csa_vif, vif);
7ef0aab6 3273
7ef0aab6
AO		 3274 if (WARN_ONCE(mvmvif->csa_countdown,
3275 "Previous CSA countdown didn't complete")) {
3276 ret = -EBUSY;
3277 goto out_unlock;
3278 }
3279
6b20d774 3280 break;
dc88b4ba 3281 case NL80211_IFTYPE_STATION:
4500e133
LC		 3282 /* Schedule the time event to a bit before beacon 1,
3283 * to make sure we're in the new channel when the
3284 * GO/AP arrives.
3285 */
3286 apply_time = chsw->device_timestamp +
3287 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3288 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
dc88b4ba
LC		 3289
3290 if (chsw->block_tx)
3291 iwl_mvm_csa_client_absent(mvm, vif);
3292
4500e133 3293 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
dc88b4ba 3294 apply_time);
c6e0a3e0
LC		 3295 if (mvmvif->bf_data.bf_enabled) {
3296 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3297 if (ret)
3298 goto out_unlock;
3299 }
3300
dc88b4ba 3301 break;
6b20d774
LC		 3302 default:
3303 break;
3304 }
bd3398e2 3305
f6c34820
LC		 3306 mvmvif->ps_disabled = true;
3307
3308 ret = iwl_mvm_power_update_ps(mvm);
3309 if (ret)
3310 goto out_unlock;
f028905c 3311
e198f5e7
AN		 3312 /* we won't be on this channel any longer */
3313 iwl_mvm_teardown_tdls_peers(mvm);
3314
bd3398e2
AO		 3315out_unlock:
3316 mutex_unlock(&mvm->mutex);
f028905c
LC		 3317
3318 return ret;
bd3398e2
AO		 3319}
3320
f6c34820
LC		 3321static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3322 struct ieee80211_vif *vif)
3323{
3324 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3325 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3326 int ret;
3327
3328 mutex_lock(&mvm->mutex);
3329
a57c688d
LC		 3330 if (vif->type == NL80211_IFTYPE_STATION) {
3331 struct iwl_mvm_sta *mvmsta;
3332
3333 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3334 mvmvif->ap_sta_id);
3335
3336 if (WARN_ON(!mvmsta)) {
3337 ret = -EIO;
3338 goto out_unlock;
3339 }
3340
3341 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3342
3343 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
c6e0a3e0
LC		 3344
3345 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3346 if (ret)
3347 goto out_unlock;
686e7fe1
LC		 3348
3349 iwl_mvm_stop_session_protection(mvm, vif);
a57c688d
LC		 3350 }
3351
f6c34820
LC		 3352 mvmvif->ps_disabled = false;
3353
3354 ret = iwl_mvm_power_update_ps(mvm);
3355
a57c688d 3356out_unlock:
f6c34820
LC		 3357 mutex_unlock(&mvm->mutex);
3358
3359 return ret;
3360}
3361
c5b0e7c0
EG		 3362static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3363 struct ieee80211_vif *vif, u32 queues, bool drop)
3364{
3365 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3366 struct iwl_mvm_vif *mvmvif;
3367 struct iwl_mvm_sta *mvmsta;
a0f6bf2a
AN		 3368 struct ieee80211_sta *sta;
3369 int i;
3370 u32 msk = 0;
c5b0e7c0
EG		 3371
3372 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3373 return;
3374
3375 mutex_lock(&mvm->mutex);
3376 mvmvif = iwl_mvm_vif_from_mac80211(vif);
c5b0e7c0 3377
a0f6bf2a
AN		 3378 /* flush the AP-station and all TDLS peers */
3379 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3380 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3381 lockdep_is_held(&mvm->mutex));
3382 if (IS_ERR_OR_NULL(sta))
3383 continue;
3384
3385 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3386 if (mvmsta->vif != vif)
3387 continue;
3388
3389 /* make sure only TDLS peers or the AP are flushed */
3390 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3391
3392 msk |= mvmsta->tfd_queue_msk;
480acbce 3393 }
c5b0e7c0
EG		 3394
3395 if (drop) {
a0f6bf2a 3396 if (iwl_mvm_flush_tx_path(mvm, msk, true))
c5b0e7c0 3397 IWL_ERR(mvm, "flush request fail\n");
480acbce 3398 mutex_unlock(&mvm->mutex);
c5b0e7c0 3399 } else {
480acbce
JB		 3400 mutex_unlock(&mvm->mutex);
3401
3402 /* this can take a while, and we may need/want other operations
3403 * to succeed while doing this, so do it without the mutex held
3404 */
a0f6bf2a 3405 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
c5b0e7c0 3406 }
c5b0e7c0
EG		 3407}
3408
e5209263 3409const struct ieee80211_ops iwl_mvm_hw_ops = {
8ca151b5
JB		 3410 .tx = iwl_mvm_mac_tx,
3411 .ampdu_action = iwl_mvm_mac_ampdu_action,
3412 .start = iwl_mvm_mac_start,
cf2c92d8 3413 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
8ca151b5
JB		 3414 .stop = iwl_mvm_mac_stop,
3415 .add_interface = iwl_mvm_mac_add_interface,
3416 .remove_interface = iwl_mvm_mac_remove_interface,
3417 .config = iwl_mvm_mac_config,
e59647ea 3418 .prepare_multicast = iwl_mvm_prepare_multicast,
8ca151b5
JB		 3419 .configure_filter = iwl_mvm_configure_filter,
3420 .bss_info_changed = iwl_mvm_bss_info_changed,
3421 .hw_scan = iwl_mvm_mac_hw_scan,
3422 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1ddbbb0c 3423 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
8ca151b5
JB		 3424 .sta_state = iwl_mvm_mac_sta_state,
3425 .sta_notify = iwl_mvm_mac_sta_notify,
3426 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3e56eadf 3427 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
8ca151b5 3428 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1f3b0ff8 3429 .sta_rc_update = iwl_mvm_sta_rc_update,
8ca151b5
JB		 3430 .conf_tx = iwl_mvm_mac_conf_tx,
3431 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
07ecd897 3432 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
c5b0e7c0 3433 .flush = iwl_mvm_mac_flush,
35a000b7
DS		 3434 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3435 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
8ca151b5
JB		 3436 .set_key = iwl_mvm_mac_set_key,
3437 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3438 .remain_on_channel = iwl_mvm_roc,
3439 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
8ca151b5
JB		 3440 .add_chanctx = iwl_mvm_add_chanctx,
3441 .remove_chanctx = iwl_mvm_remove_chanctx,
3442 .change_chanctx = iwl_mvm_change_chanctx,
3443 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3444 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
b08c1d97 3445 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
8ca151b5 3446
5023d966
JB		 3447 .start_ap = iwl_mvm_start_ap_ibss,
3448 .stop_ap = iwl_mvm_stop_ap_ibss,
3449 .join_ibss = iwl_mvm_start_ap_ibss,
3450 .leave_ibss = iwl_mvm_stop_ap_ibss,
8ca151b5
JB		 3451
3452 .set_tim = iwl_mvm_set_tim,
3453
622e3f9b 3454 .channel_switch = iwl_mvm_channel_switch,
f028905c 3455 .pre_channel_switch = iwl_mvm_pre_channel_switch,
f6c34820 3456 .post_channel_switch = iwl_mvm_post_channel_switch,
bd3398e2 3457
1d3c3f63
AN		 3458 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3459 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3460 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3461
507cadf2
DS		 3462 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3463
8ca151b5
JB		 3464#ifdef CONFIG_PM_SLEEP
3465 /* look at d3.c */
3466 .suspend = iwl_mvm_suspend,
3467 .resume = iwl_mvm_resume,
3468 .set_wakeup = iwl_mvm_set_wakeup,
3469 .set_rekey_data = iwl_mvm_set_rekey_data,
3470#if IS_ENABLED(CONFIG_IPV6)
3471 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3472#endif
3473 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3474#endif
3475};
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