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iwlwifi: mvm: Fix the keep_alive calculation
[thirdparty/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
CommitLineData
8ca151b5
JB		 1/******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
51368bf7 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5
JB		 10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
410dc5aa 26 * in the file called COPYING.
8ca151b5
JB		 27 *
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
51368bf7 34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc 35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5
JB		 36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65#include <linux/kernel.h>
66#include <linux/slab.h>
67#include <linux/skbuff.h>
68#include <linux/netdevice.h>
69#include <linux/etherdevice.h>
f0c2646a 70#include <linux/ip.h>
2ee8f021 71#include <linux/if_arp.h>
aadede6e 72#include <linux/devcoredump.h>
8ca151b5 73#include <net/mac80211.h>
7b1dd048 74#include <net/ieee80211_radiotap.h>
f0c2646a 75#include <net/tcp.h>
8ca151b5
JB		 76
77#include "iwl-op-mode.h"
78#include "iwl-io.h"
79#include "mvm.h"
80#include "sta.h"
81#include "time-event.h"
82#include "iwl-eeprom-parse.h"
83#include "fw-api-scan.h"
84#include "iwl-phy-db.h"
507cadf2 85#include "testmode.h"
655e6d6d
EG		 86#include "iwl-fw-error-dump.h"
87#include "iwl-prph.h"
8ca151b5
JB		 88
89static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
90 {
91 .max = 1,
8eb38710 92 .types = BIT(NL80211_IFTYPE_STATION),
8ca151b5 93 },
3c15a0fb
JB		 94 {
95 .max = 1,
8eb38710
IP		 96 .types = BIT(NL80211_IFTYPE_AP) |
97 BIT(NL80211_IFTYPE_P2P_CLIENT) |
3c15a0fb
JB		 98 BIT(NL80211_IFTYPE_P2P_GO),
99 },
100 {
101 .max = 1,
102 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
103 },
8ca151b5
JB		 104};
105
106static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
107 {
108 .num_different_channels = 1,
109 .max_interfaces = 3,
110 .limits = iwl_mvm_limits,
111 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
112 },
113};
114
f0c2646a
JB		 115#ifdef CONFIG_PM_SLEEP
116static const struct nl80211_wowlan_tcp_data_token_feature
117iwl_mvm_wowlan_tcp_token_feature = {
118 .min_len = 0,
119 .max_len = 255,
120 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
121};
122
123static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
124 .tok = &iwl_mvm_wowlan_tcp_token_feature,
125 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
126 sizeof(struct ethhdr) -
127 sizeof(struct iphdr) -
128 sizeof(struct tcphdr),
129 .data_interval_max = 65535, /* __le16 in API */
130 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
131 sizeof(struct ethhdr) -
132 sizeof(struct iphdr) -
133 sizeof(struct tcphdr),
134 .seq = true,
135};
136#endif
137
77736923 138#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
2ee8f021
EP		 139/*
140 * Use the reserved field to indicate magic values.
141 * these values will only be used internally by the driver,
142 * and won't make it to the fw (reserved will be 0).
143 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
144 * be the vif's ip address. in case there is not a single
145 * ip address (0, or more than 1), this attribute will
146 * be skipped.
147 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
148 * the LSB bytes of the vif's mac address
149 */
150enum {
151 BC_FILTER_MAGIC_NONE = 0,
152 BC_FILTER_MAGIC_IP,
153 BC_FILTER_MAGIC_MAC,
154};
155
77736923
EP		 156static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
157 {
158 /* arp */
159 .discard = 0,
160 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
161 .attrs = {
162 {
163 /* frame type - arp, hw type - ethernet */
164 .offset_type =
165 BCAST_FILTER_OFFSET_PAYLOAD_START,
166 .offset = sizeof(rfc1042_header),
167 .val = cpu_to_be32(0x08060001),
168 .mask = cpu_to_be32(0xffffffff),
169 },
2ee8f021
EP		 170 {
171 /* arp dest ip */
172 .offset_type =
173 BCAST_FILTER_OFFSET_PAYLOAD_START,
174 .offset = sizeof(rfc1042_header) + 2 +
175 sizeof(struct arphdr) +
176 ETH_ALEN + sizeof(__be32) +
177 ETH_ALEN,
178 .mask = cpu_to_be32(0xffffffff),
179 /* mark it as special field */
180 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
181 },
182 },
183 },
184 {
185 /* dhcp offer bcast */
186 .discard = 0,
187 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
188 .attrs = {
189 {
190 /* udp dest port - 68 (bootp client)*/
191 .offset_type = BCAST_FILTER_OFFSET_IP_END,
192 .offset = offsetof(struct udphdr, dest),
193 .val = cpu_to_be32(0x00440000),
194 .mask = cpu_to_be32(0xffff0000),
195 },
196 {
197 /* dhcp - lsb bytes of client hw address */
198 .offset_type = BCAST_FILTER_OFFSET_IP_END,
199 .offset = 38,
200 .mask = cpu_to_be32(0xffffffff),
201 /* mark it as special field */
202 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
203 },
77736923
EP		 204 },
205 },
206 /* last filter must be empty */
207 {},
208};
209#endif
210
7498cf4c
EP		 211void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
212{
7bb426ea 213 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 214 return;
215
216 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
576eeee9
EP		 217 spin_lock_bh(&mvm->refs_lock);
218 mvm->refs[ref_type]++;
219 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 220 iwl_trans_ref(mvm->trans);
221}
222
223void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
224{
7bb426ea 225 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 226 return;
227
228 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
576eeee9
EP		 229 spin_lock_bh(&mvm->refs_lock);
230 WARN_ON(!mvm->refs[ref_type]--);
231 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 232 iwl_trans_unref(mvm->trans);
233}
234
576eeee9
EP		 235static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
236 enum iwl_mvm_ref_type except_ref)
7498cf4c 237{
576eeee9 238 int i, j;
7498cf4c 239
7bb426ea 240 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 241 return;
242
576eeee9
EP		 243 spin_lock_bh(&mvm->refs_lock);
244 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
245 if (except_ref == i || !mvm->refs[i])
7498cf4c
EP		 246 continue;
247
576eeee9
EP		 248 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
249 i, mvm->refs[i]);
250 for (j = 0; j < mvm->refs[i]; j++)
251 iwl_trans_unref(mvm->trans);
252 mvm->refs[i] = 0;
7498cf4c 253 }
576eeee9 254 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 255}
256
f4cf8680
EP		 257bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
258{
259 int i;
260 bool taken = false;
261
262 if (!iwl_mvm_is_d0i3_supported(mvm))
263 return true;
264
265 spin_lock_bh(&mvm->refs_lock);
266 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
267 if (mvm->refs[i]) {
268 taken = true;
269 break;
270 }
271 }
272 spin_unlock_bh(&mvm->refs_lock);
273
274 return taken;
275}
276
576eeee9 277int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
d40fc489
GG		 278{
279 iwl_mvm_ref(mvm, ref_type);
280
281 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
282 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
283 HZ)) {
284 WARN_ON_ONCE(1);
285 iwl_mvm_unref(mvm, ref_type);
286 return -EIO;
287 }
288
289 return 0;
290}
291
fe0f2de3
IP		 292static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
293{
294 int i;
295
296 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
297 for (i = 0; i < NUM_PHY_CTX; i++) {
298 mvm->phy_ctxts[i].id = i;
299 mvm->phy_ctxts[i].ref = 0;
300 }
301}
302
8ca151b5
JB		 303int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
304{
305 struct ieee80211_hw *hw = mvm->hw;
831e85f3 306 int num_mac, ret, i;
8ca151b5
JB		 307
308 /* Tell mac80211 our characteristics */
309 hw->flags = IEEE80211_HW_SIGNAL_DBM |
310 IEEE80211_HW_SPECTRUM_MGMT |
311 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
312 IEEE80211_HW_QUEUE_CONTROL |
313 IEEE80211_HW_WANT_MONITOR_VIF |
8ca151b5
JB		 314 IEEE80211_HW_SUPPORTS_PS |
315 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
d2931bbd 316 IEEE80211_HW_AMPDU_AGGREGATION |
d64048ed 317 IEEE80211_HW_TIMING_BEACON_ONLY |
147fc9be 318 IEEE80211_HW_CONNECTION_MONITOR |
b71d9c8a
IY		 319 IEEE80211_HW_CHANCTX_STA_CSA |
320 IEEE80211_HW_SUPPORTS_CLONED_SKBS;
8ca151b5 321
19e737c9 322 hw->queues = mvm->first_agg_queue;
398e8c6c 323 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
7b1dd048
EG		 324 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
325 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
326 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
8ca151b5
JB		 327 hw->rate_control_algorithm = "iwl-mvm-rs";
328
329 /*
330 * Enable 11w if advertised by firmware and software crypto
331 * is not enabled (as the firmware will interpret some mgmt
332 * packets, so enabling it with software crypto isn't safe)
333 */
334 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
335 !iwlwifi_mod_params.sw_crypto)
336 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
337
1504f48d
MC		 338 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
339 IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 &&
340 !iwlwifi_mod_params.uapsd_disable) {
341 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
4cb832d5 342 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
1504f48d
MC		 343 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
344 }
e8e626ad 345
fb98be5e
DS		 346 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
347 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
348
8ca151b5
JB		 349 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
350 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
fe0f2de3 351 hw->chanctx_data_size = sizeof(u16);
8ca151b5
JB		 352
353 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3c15a0fb
JB		 354 BIT(NL80211_IFTYPE_P2P_CLIENT) |
355 BIT(NL80211_IFTYPE_AP) |
356 BIT(NL80211_IFTYPE_P2P_GO) |
c13b1725
EG		 357 BIT(NL80211_IFTYPE_P2P_DEVICE) |
358 BIT(NL80211_IFTYPE_ADHOC);
5023d966 359
a2f73b6c
LR		 360 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
361 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
362 REGULATORY_DISABLE_BEACON_HINTS;
8ca151b5 363
3e56eadf
JB		 364 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
365 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
366
bd3398e2
AO		 367 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW)
368 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
369
8ca151b5
JB		 370 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
371 hw->wiphy->n_iface_combinations =
372 ARRAY_SIZE(iwl_mvm_iface_combinations);
373
c451e6d4 374 hw->wiphy->max_remain_on_channel_duration = 10000;
8ca151b5
JB		 375 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
376
377 /* Extract MAC address */
378 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
379 hw->wiphy->addresses = mvm->addresses;
380 hw->wiphy->n_addresses = 1;
831e85f3
IP		 381
382 /* Extract additional MAC addresses if available */
383 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
384 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
385
386 for (i = 1; i < num_mac; i++) {
387 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
8ca151b5 388 ETH_ALEN);
831e85f3 389 mvm->addresses[i].addr[5]++;
8ca151b5
JB		 390 hw->wiphy->n_addresses++;
391 }
392
fe0f2de3
IP		 393 iwl_mvm_reset_phy_ctxts(mvm);
394
48849a41 395 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
20f1a5de 396
8ca151b5
JB		 397 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
398
399 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
400 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
401 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
402 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
403 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
404 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
405
406 hw->wiphy->hw_version = mvm->trans->hw_id;
407
ade50652 408 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
8ca151b5
JB		 409 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
410 else
411 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
412
6efaaf33
EG		 413 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
414 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
415 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
416 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
417 /* we create the 802.11 header and zero length SSID IE. */
418 hw->wiphy->max_sched_scan_ie_len =
419 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
420 }
35a000b7 421
8ca151b5 422 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
ab480030 423 NL80211_FEATURE_LOW_PRIORITY_SCAN |
0d8614b4
EP		 424 NL80211_FEATURE_P2P_GO_OPPPS |
425 NL80211_FEATURE_DYNAMIC_SMPS |
9b5452fd
EG		 426 NL80211_FEATURE_STATIC_SMPS |
427 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
8ca151b5 428
f1daa00e
AO		 429 if (mvm->fw->ucode_capa.capa[0] &
430 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
431 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
226bcd48
AK		 432 if (mvm->fw->ucode_capa.capa[0] &
433 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
434 hw->wiphy->features |= NL80211_FEATURE_QUIET;
f1daa00e 435
73897bd1
AO		 436 if (mvm->fw->ucode_capa.capa[0] &
437 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
438 hw->wiphy->features |=
439 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
440
441 if (mvm->fw->ucode_capa.capa[0] &
442 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
443 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
444
8ca151b5
JB		 445 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
446
e36e5433 447 /* currently FW API supports only one optional cipher scheme */
9ddca860 448 if (mvm->fw->cs[0].cipher) {
e36e5433 449 mvm->hw->n_cipher_schemes = 1;
9ddca860 450 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
e36e5433
MS		 451 }
452
8ca151b5 453#ifdef CONFIG_PM_SLEEP
d15a747f
EP		 454 if (iwl_mvm_is_d0i3_supported(mvm) &&
455 device_can_wakeup(mvm->trans->dev)) {
456 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
457 hw->wiphy->wowlan = &mvm->wowlan;
458 } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
8ca151b5
JB		 459 mvm->trans->ops->d3_suspend &&
460 mvm->trans->ops->d3_resume &&
461 device_can_wakeup(mvm->trans->dev)) {
964dc9e2
JB		 462 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
463 WIPHY_WOWLAN_DISCONNECT |
464 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
465 WIPHY_WOWLAN_RFKILL_RELEASE;
8ca151b5 466 if (!iwlwifi_mod_params.sw_crypto)
964dc9e2
JB		 467 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
468 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
469 WIPHY_WOWLAN_4WAY_HANDSHAKE;
470
471 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
472 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
473 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
474 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
475 hw->wiphy->wowlan = &mvm->wowlan;
8ca151b5
JB		 476 }
477#endif
478
77736923
EP		 479#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
480 /* assign default bcast filtering configuration */
481 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
482#endif
483
8ca151b5
JB		 484 ret = iwl_mvm_leds_init(mvm);
485 if (ret)
486 return ret;
487
b7327d89
EG		 488 ret = ieee80211_register_hw(mvm->hw);
489 if (ret)
490 iwl_mvm_leds_exit(mvm);
491
492 return ret;
8ca151b5
JB		 493}
494
b2492501
AN		 495static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
496 struct ieee80211_sta *sta,
497 struct sk_buff *skb)
498{
499 struct iwl_mvm_sta *mvmsta;
500 bool defer = false;
501
502 /*
503 * double check the IN_D0I3 flag both before and after
504 * taking the spinlock, in order to prevent taking
505 * the spinlock when not needed.
506 */
507 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
508 return false;
509
510 spin_lock(&mvm->d0i3_tx_lock);
511 /*
512 * testing the flag again ensures the skb dequeue
513 * loop (on d0i3 exit) hasn't run yet.
514 */
515 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
516 goto out;
517
518 mvmsta = iwl_mvm_sta_from_mac80211(sta);
519 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
520 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
521 goto out;
522
523 __skb_queue_tail(&mvm->d0i3_tx, skb);
524 ieee80211_stop_queues(mvm->hw);
525
526 /* trigger wakeup */
527 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
528 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
529
530 defer = true;
531out:
532 spin_unlock(&mvm->d0i3_tx_lock);
533 return defer;
534}
535
8ca151b5
JB		 536static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
537 struct ieee80211_tx_control *control,
538 struct sk_buff *skb)
539{
540 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3e56eadf
JB		 541 struct ieee80211_sta *sta = control->sta;
542 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
543 struct ieee80211_hdr *hdr = (void *)skb->data;
8ca151b5 544
9ee718aa
EL		 545 if (iwl_mvm_is_radio_killed(mvm)) {
546 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
8ca151b5
JB		 547 goto drop;
548 }
549
398e8c6c 550 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
a6cc5163
MG		 551 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
552 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
8ca151b5
JB		 553 goto drop;
554
3e56eadf
JB		 555 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
556 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
557 ieee80211_is_mgmt(hdr->frame_control) &&
558 !ieee80211_is_deauth(hdr->frame_control) &&
559 !ieee80211_is_disassoc(hdr->frame_control) &&
560 !ieee80211_is_action(hdr->frame_control)))
561 sta = NULL;
562
563 if (sta) {
b2492501
AN		 564 if (iwl_mvm_defer_tx(mvm, sta, skb))
565 return;
3e56eadf 566 if (iwl_mvm_tx_skb(mvm, skb, sta))
8ca151b5
JB		 567 goto drop;
568 return;
569 }
570
571 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
572 goto drop;
573 return;
574 drop:
575 ieee80211_free_txskb(hw, skb);
576}
577
205e2210
EG		 578static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
579{
580 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
581 return false;
582 return true;
583}
584
585static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
586{
587 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
588 return false;
589 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
590 return true;
591
592 /* enabled by default */
593 return true;
594}
595
8ca151b5
JB		 596static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
597 struct ieee80211_vif *vif,
598 enum ieee80211_ampdu_mlme_action action,
599 struct ieee80211_sta *sta, u16 tid,
600 u16 *ssn, u8 buf_size)
601{
602 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
603 int ret;
b2492501 604 bool tx_agg_ref = false;
8ca151b5
JB		 605
606 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
607 sta->addr, tid, action);
608
609 if (!(mvm->nvm_data->sku_cap_11n_enable))
610 return -EACCES;
611
b2492501 612 /* return from D0i3 before starting a new Tx aggregation */
9256c205
EP		 613 switch (action) {
614 case IEEE80211_AMPDU_TX_START:
615 case IEEE80211_AMPDU_TX_STOP_CONT:
616 case IEEE80211_AMPDU_TX_STOP_FLUSH:
617 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
618 case IEEE80211_AMPDU_TX_OPERATIONAL:
b2492501 619 /*
9256c205
EP		 620 * for tx start, wait synchronously until D0i3 exit to
621 * get the correct sequence number for the tid.
622 * additionally, some other ampdu actions use direct
623 * target access, which is not handled automatically
624 * by the trans layer (unlike commands), so wait for
625 * d0i3 exit in these cases as well.
b2492501 626 */
d40fc489
GG		 627 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
628 if (ret)
629 return ret;
630
631 tx_agg_ref = true;
9256c205
EP		 632 break;
633 default:
634 break;
b2492501
AN		 635 }
636
8ca151b5
JB		 637 mutex_lock(&mvm->mutex);
638
639 switch (action) {
640 case IEEE80211_AMPDU_RX_START:
205e2210 641 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
8ca151b5
JB		 642 ret = -EINVAL;
643 break;
644 }
645 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
646 break;
647 case IEEE80211_AMPDU_RX_STOP:
648 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
649 break;
650 case IEEE80211_AMPDU_TX_START:
205e2210 651 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
5d158efa
EG		 652 ret = -EINVAL;
653 break;
654 }
8ca151b5
JB		 655 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
656 break;
657 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 658 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
659 break;
8ca151b5
JB		 660 case IEEE80211_AMPDU_TX_STOP_FLUSH:
661 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 662 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 663 break;
664 case IEEE80211_AMPDU_TX_OPERATIONAL:
665 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
666 break;
667 default:
668 WARN_ON_ONCE(1);
669 ret = -EINVAL;
670 break;
671 }
672 mutex_unlock(&mvm->mutex);
673
b2492501
AN		 674 /*
675 * If the tid is marked as started, we won't use it for offloaded
676 * traffic on the next D0i3 entry. It's safe to unref.
677 */
678 if (tx_agg_ref)
679 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
680
8ca151b5
JB		 681 return ret;
682}
683
684static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
685 struct ieee80211_vif *vif)
686{
687 struct iwl_mvm *mvm = data;
688 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
689
690 mvmvif->uploaded = false;
691 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
692
693 /* does this make sense at all? */
694 mvmvif->color++;
695
696 spin_lock_bh(&mvm->time_event_lock);
697 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
698 spin_unlock_bh(&mvm->time_event_lock);
699
fe0f2de3 700 mvmvif->phy_ctxt = NULL;
8a275bad 701 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
8ca151b5
JB		 702}
703
aadede6e
JB		 704static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
705 const void *data, size_t datalen)
706{
707 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
708 ssize_t bytes_read;
709 ssize_t bytes_read_trans;
710
711 if (offset < dump_ptrs->op_mode_len) {
712 bytes_read = min_t(ssize_t, count,
713 dump_ptrs->op_mode_len - offset);
714 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
715 bytes_read);
716 offset += bytes_read;
717 count -= bytes_read;
718
719 if (count == 0)
720 return bytes_read;
721 } else {
722 bytes_read = 0;
723 }
724
725 if (!dump_ptrs->trans_ptr)
726 return bytes_read;
727
728 offset -= dump_ptrs->op_mode_len;
729 bytes_read_trans = min_t(ssize_t, count,
730 dump_ptrs->trans_ptr->len - offset);
731 memcpy(buffer + bytes_read,
732 (u8 *)dump_ptrs->trans_ptr->data + offset,
733 bytes_read_trans);
734
735 return bytes_read + bytes_read_trans;
736}
737
738static void iwl_mvm_free_coredump(const void *data)
739{
740 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
741
742 vfree(fw_error_dump->op_mode_ptr);
743 vfree(fw_error_dump->trans_ptr);
744 kfree(fw_error_dump);
745}
746
4bfa47f3 747void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
655e6d6d
EG		 748{
749 struct iwl_fw_error_dump_file *dump_file;
750 struct iwl_fw_error_dump_data *dump_data;
751 struct iwl_fw_error_dump_info *dump_info;
48eb7b34 752 struct iwl_mvm_dump_ptrs *fw_error_dump;
655e6d6d
EG		 753 const struct fw_img *img;
754 u32 sram_len, sram_ofs;
755 u32 file_len, rxf_len;
756 unsigned long flags;
655e6d6d
EG		 757 int reg_val;
758
759 lockdep_assert_held(&mvm->mutex);
760
aadede6e 761 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
48eb7b34
EG		 762 if (!fw_error_dump)
763 return;
764
655e6d6d
EG		 765 img = &mvm->fw->img[mvm->cur_ucode];
766 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
767 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
768
769 /* reading buffer size */
770 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
771 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
772
773 /* the register holds the value divided by 128 */
774 rxf_len = rxf_len << 7;
775
776 file_len = sizeof(*dump_file) +
777 sizeof(*dump_data) * 3 +
778 sram_len +
779 rxf_len +
780 sizeof(*dump_info);
781
5bfe6f53 782 dump_file = vzalloc(file_len);
48eb7b34
EG		 783 if (!dump_file) {
784 kfree(fw_error_dump);
655e6d6d 785 return;
48eb7b34 786 }
655e6d6d 787
48eb7b34 788 fw_error_dump->op_mode_ptr = dump_file;
655e6d6d
EG		 789
790 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
655e6d6d
EG		 791 dump_data = (void *)dump_file->data;
792
793 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
794 dump_data->len = cpu_to_le32(sizeof(*dump_info));
795 dump_info = (void *) dump_data->data;
796 dump_info->device_family =
797 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
798 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
799 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
800 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
801 sizeof(dump_info->fw_human_readable));
802 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
803 sizeof(dump_info->dev_human_readable));
804 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
805 sizeof(dump_info->bus_human_readable));
806
807 dump_data = iwl_fw_error_next_data(dump_data);
808 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
809 dump_data->len = cpu_to_le32(rxf_len);
810
811 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
812 u32 *rxf = (void *)dump_data->data;
813 int i;
814
815 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
816 iwl_trans_write_prph(mvm->trans,
817 RXF_LD_FENCE_OFFSET_ADDR,
818 i * sizeof(u32));
819 rxf[i] = iwl_trans_read_prph(mvm->trans,
820 RXF_FIFO_RD_FENCE_ADDR);
821 }
822 iwl_trans_release_nic_access(mvm->trans, &flags);
823 }
824
825 dump_data = iwl_fw_error_next_data(dump_data);
826 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
827 dump_data->len = cpu_to_le32(sram_len);
828 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
829 sram_len);
830
48eb7b34
EG		 831 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
832 fw_error_dump->op_mode_len = file_len;
833 if (fw_error_dump->trans_ptr)
834 file_len += fw_error_dump->trans_ptr->len;
835 dump_file->file_len = cpu_to_le32(file_len);
4bfa47f3 836
aadede6e
JB		 837 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
838 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
655e6d6d 839}
655e6d6d 840
8ca151b5
JB		 841static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
842{
58629d9d
JB		 843 /* clear the D3 reconfig, we only need it to avoid dumping a
844 * firmware coredump on reconfiguration, we shouldn't do that
845 * on D3->D0 transition
846 */
847 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status))
848 iwl_mvm_fw_error_dump(mvm);
1bd3cbc1 849
8ca151b5 850 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 851
852 mvm->scan_status = IWL_MVM_SCAN_NONE;
b1873300 853 mvm->ps_disabled = false;
31b8b343 854 mvm->calibrating = false;
8ca151b5
JB		 855
856 /* just in case one was running */
857 ieee80211_remain_on_channel_expired(mvm->hw);
858
859 ieee80211_iterate_active_interfaces_atomic(
860 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
861 iwl_mvm_cleanup_iterator, mvm);
862
fe0f2de3 863 mvm->p2p_device_vif = NULL;
37577fe2 864 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
fe0f2de3
IP		 865
866 iwl_mvm_reset_phy_ctxts(mvm);
8ca151b5
JB		 867 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
868 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
8a275bad
EG		 869 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
870 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
871 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
872 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
873 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
874 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
8ca151b5
JB		 875
876 ieee80211_wake_queues(mvm->hw);
877
7498cf4c
EP		 878 /* cleanup all stale references (scan, roc), but keep the
879 * ucode_down ref until reconfig is complete */
880 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
881
228670b2
EP		 882 /* clear any stale d0i3 state */
883 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
884
8ca151b5 885 mvm->vif_count = 0;
113a0447 886 mvm->rx_ba_sessions = 0;
8ca151b5
JB		 887}
888
a0a09243 889int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
8ca151b5 890{
8ca151b5
JB		 891 int ret;
892
a0a09243 893 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 894
895 /* Clean up some internal and mac80211 state on restart */
896 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
897 iwl_mvm_restart_cleanup(mvm);
898
899 ret = iwl_mvm_up(mvm);
c47af22a
JB		 900
901 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
902 /* Something went wrong - we need to finish some cleanup
903 * that normally iwl_mvm_mac_restart_complete() below
904 * would do.
905 */
906 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
907 iwl_mvm_d0i3_enable_tx(mvm, NULL);
908 }
909
a0a09243
LC		 910 return ret;
911}
912
913static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
914{
915 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
916 int ret;
917
918 mutex_lock(&mvm->mutex);
919 ret = __iwl_mvm_mac_start(mvm);
8ca151b5
JB		 920 mutex_unlock(&mvm->mutex);
921
922 return ret;
923}
924
cf2c92d8 925static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
8ca151b5 926{
8ca151b5
JB		 927 int ret;
928
929 mutex_lock(&mvm->mutex);
930
931 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
b2492501 932 iwl_mvm_d0i3_enable_tx(mvm, NULL);
0166230c 933 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 934 if (ret)
935 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
936 ret);
937
7498cf4c
EP		 938 /* allow transport/FW low power modes */
939 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
940
8ca151b5
JB		 941 mutex_unlock(&mvm->mutex);
942}
943
088070a2
EP		 944static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
945{
946 bool exit_now;
947
948 if (!iwl_mvm_is_d0i3_supported(mvm))
949 return;
950
951 mutex_lock(&mvm->d0i3_suspend_mutex);
952 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
953 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
954 &mvm->d0i3_suspend_flags);
955 mutex_unlock(&mvm->d0i3_suspend_mutex);
956
957 if (exit_now) {
958 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
959 _iwl_mvm_exit_d0i3(mvm);
960 }
961}
962
cf2c92d8
EP		 963static void
964iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
965 enum ieee80211_reconfig_type reconfig_type)
966{
967 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
968
969 switch (reconfig_type) {
970 case IEEE80211_RECONFIG_TYPE_RESTART:
971 iwl_mvm_restart_complete(mvm);
972 break;
973 case IEEE80211_RECONFIG_TYPE_SUSPEND:
088070a2 974 iwl_mvm_resume_complete(mvm);
cf2c92d8
EP		 975 break;
976 }
977}
978
a0a09243 979void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
8ca151b5 980{
a0a09243 981 lockdep_assert_held(&mvm->mutex);
7498cf4c
EP		 982
983 /* disallow low power states when the FW is down */
984 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
985
8ca151b5
JB		 986 /* async_handlers_wk is now blocked */
987
988 /*
989 * The work item could be running or queued if the
990 * ROC time event stops just as we get here.
991 */
992 cancel_work_sync(&mvm->roc_done_wk);
993
994 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 995
996 iwl_mvm_async_handlers_purge(mvm);
997 /* async_handlers_list is empty and will stay empty: HW is stopped */
998
999 /* the fw is stopped, the aux sta is dead: clean up driver state */
712b24ad 1000 iwl_mvm_del_aux_sta(mvm);
8ca151b5 1001
bc44886d 1002 mvm->ucode_loaded = false;
a0a09243 1003}
bc44886d 1004
a0a09243
LC		 1005static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1006{
1007 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1008
1009 flush_work(&mvm->d0i3_exit_work);
1010 flush_work(&mvm->async_handlers_wk);
4bfa47f3 1011 flush_work(&mvm->fw_error_dump_wk);
a0a09243
LC		 1012
1013 mutex_lock(&mvm->mutex);
1014 __iwl_mvm_mac_stop(mvm);
8ca151b5
JB		 1015 mutex_unlock(&mvm->mutex);
1016
1017 /*
1018 * The worker might have been waiting for the mutex, let it run and
1019 * discover that its list is now empty.
1020 */
1021 cancel_work_sync(&mvm->async_handlers_wk);
1022}
1023
fe0f2de3
IP		 1024static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1025{
1026 u16 i;
1027
1028 lockdep_assert_held(&mvm->mutex);
1029
1030 for (i = 0; i < NUM_PHY_CTX; i++)
1031 if (!mvm->phy_ctxts[i].ref)
1032 return &mvm->phy_ctxts[i];
1033
1034 IWL_ERR(mvm, "No available PHY context\n");
1035 return NULL;
1036}
1037
ee9c6cb0
EG		 1038static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1039 s8 tx_power)
1040{
1041 /* FW is in charge of regulatory enforcement */
1042 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1043 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1044 .pwr_restriction = cpu_to_le16(tx_power),
1045 };
1046
a1022927 1047 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
ee9c6cb0
EG		 1048 sizeof(reduce_txpwr_cmd),
1049 &reduce_txpwr_cmd);
1050}
1051
8ca151b5
JB		 1052static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1053 struct ieee80211_vif *vif)
1054{
1055 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1056 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1057 int ret;
1058
d40fc489
GG		 1059 /*
1060 * make sure D0i3 exit is completed, otherwise a target access
1061 * during tx queue configuration could be done when still in
1062 * D0i3 state.
1063 */
1064 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1065 if (ret)
1066 return ret;
1067
8ca151b5
JB		 1068 /*
1069 * Not much to do here. The stack will not allow interface
1070 * types or combinations that we didn't advertise, so we
1071 * don't really have to check the types.
1072 */
1073
1074 mutex_lock(&mvm->mutex);
1075
e89044d7 1076 /* Allocate resources for the MAC context, and add it to the fw */
8ca151b5
JB		 1077 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1078 if (ret)
1079 goto out_unlock;
1080
1c2abf72 1081 /* Counting number of interfaces is needed for legacy PM */
ea183d02
IP		 1082 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1083 mvm->vif_count++;
ea183d02 1084
8ca151b5
JB		 1085 /*
1086 * The AP binding flow can be done only after the beacon
1087 * template is configured (which happens only in the mac80211
1088 * start_ap() flow), and adding the broadcast station can happen
1089 * only after the binding.
1090 * In addition, since modifying the MAC before adding a bcast
1091 * station is not allowed by the FW, delay the adding of MAC context to
1092 * the point where we can also add the bcast station.
1093 * In short: there's not much we can do at this point, other than
1094 * allocating resources :)
1095 */
5023d966
JB		 1096 if (vif->type == NL80211_IFTYPE_AP ||
1097 vif->type == NL80211_IFTYPE_ADHOC) {
013290aa 1098 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1099 if (ret) {
1100 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1101 goto out_release;
1102 }
1103
77740cb4 1104 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1105 goto out_unlock;
1106 }
1107
8ca151b5
JB		 1108 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1109 if (ret)
1110 goto out_release;
1111
999609f1 1112 ret = iwl_mvm_power_update_mac(mvm);
e5e7aa8e
EG		 1113 if (ret)
1114 goto out_release;
8ca151b5 1115
7df15b1e 1116 /* beacon filtering */
a1022927 1117 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
bd3351ba
EP		 1118 if (ret)
1119 goto out_remove_mac;
1120
7df15b1e 1121 if (!mvm->bf_allowed_vif &&
73e5f2c5 1122 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
7df15b1e 1123 mvm->bf_allowed_vif = mvmvif;
a20fd398
AO		 1124 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1125 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
7df15b1e
HG		 1126 }
1127
8ca151b5
JB		 1128 /*
1129 * P2P_DEVICE interface does not have a channel context assigned to it,
1130 * so a dedicated PHY context is allocated to it and the corresponding
1131 * MAC context is bound to it at this stage.
1132 */
1133 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 1134
fe0f2de3
IP		 1135 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1136 if (!mvmvif->phy_ctxt) {
1137 ret = -ENOSPC;
bd3351ba 1138 goto out_free_bf;
fe0f2de3 1139 }
8ca151b5 1140
53a9d61e 1141 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1142 ret = iwl_mvm_binding_add_vif(mvm, vif);
1143 if (ret)
53a9d61e 1144 goto out_unref_phy;
8ca151b5 1145
013290aa 1146 ret = iwl_mvm_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1147 if (ret)
1148 goto out_unbind;
1149
1150 /* Save a pointer to p2p device vif, so it can later be used to
1151 * update the p2p device MAC when a GO is started/stopped */
1152 mvm->p2p_device_vif = vif;
1153 }
1154
63494374 1155 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1156 goto out_unlock;
1157
1158 out_unbind:
1159 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 1160 out_unref_phy:
fe0f2de3 1161 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
bd3351ba
EP		 1162 out_free_bf:
1163 if (mvm->bf_allowed_vif == mvmvif) {
1164 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1165 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1166 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
bd3351ba 1167 }
8ca151b5
JB		 1168 out_remove_mac:
1169 mvmvif->phy_ctxt = NULL;
1170 iwl_mvm_mac_ctxt_remove(mvm, vif);
1171 out_release:
5ee2b215
AB		 1172 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1173 mvm->vif_count--;
1c2abf72 1174
8ca151b5
JB		 1175 iwl_mvm_mac_ctxt_release(mvm, vif);
1176 out_unlock:
1177 mutex_unlock(&mvm->mutex);
1178
d40fc489
GG		 1179 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1180
8ca151b5
JB		 1181 return ret;
1182}
1183
38a12b5b
JB		 1184static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1185 struct ieee80211_vif *vif)
8ca151b5 1186{
d92b732e 1187 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
8ca151b5
JB		 1188
1189 if (tfd_msk) {
1190 mutex_lock(&mvm->mutex);
1191 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1192 mutex_unlock(&mvm->mutex);
1193 }
1194
1195 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1196 /*
1197 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1198 * We assume here that all the packets sent to the OFFCHANNEL
1199 * queue are sent in ROC session.
1200 */
1201 flush_work(&mvm->roc_done_wk);
1202 } else {
1203 /*
1204 * By now, all the AC queues are empty. The AGG queues are
1205 * empty too. We already got all the Tx responses for all the
1206 * packets in the queues. The drain work can have been
0742a75a 1207 * triggered. Flush it.
8ca151b5
JB		 1208 */
1209 flush_work(&mvm->sta_drained_wk);
1210 }
38a12b5b
JB		 1211}
1212
1213static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1214 struct ieee80211_vif *vif)
1215{
1216 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1217 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1218
1219 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 1220
1221 mutex_lock(&mvm->mutex);
1222
7df15b1e
HG		 1223 if (mvm->bf_allowed_vif == mvmvif) {
1224 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1225 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1226 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
7df15b1e
HG		 1227 }
1228
63494374
JB		 1229 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1230
8ca151b5
JB		 1231 /*
1232 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 1233 * interface is be handled as part of the stop_ap flow.
8ca151b5 1234 */
5023d966
JB		 1235 if (vif->type == NL80211_IFTYPE_AP ||
1236 vif->type == NL80211_IFTYPE_ADHOC) {
507cadf2
DS		 1237#ifdef CONFIG_NL80211_TESTMODE
1238 if (vif == mvm->noa_vif) {
1239 mvm->noa_vif = NULL;
1240 mvm->noa_duration = 0;
1241 }
1242#endif
013290aa 1243 iwl_mvm_dealloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1244 goto out_release;
1245 }
1246
1247 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1248 mvm->p2p_device_vif = NULL;
013290aa 1249 iwl_mvm_rm_bcast_sta(mvm, vif);
8ca151b5 1250 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 1251 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1252 mvmvif->phy_ctxt = NULL;
1253 }
1254
5ee2b215 1255 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5 1256 mvm->vif_count--;
1c2abf72 1257
999609f1 1258 iwl_mvm_power_update_mac(mvm);
8ca151b5
JB		 1259 iwl_mvm_mac_ctxt_remove(mvm, vif);
1260
1261out_release:
1262 iwl_mvm_mac_ctxt_release(mvm, vif);
1263 mutex_unlock(&mvm->mutex);
1264}
1265
1266static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
88f2fd73 1267{
8ca151b5
JB		 1268 return 0;
1269}
1270
e59647ea
EP		 1271struct iwl_mvm_mc_iter_data {
1272 struct iwl_mvm *mvm;
1273 int port_id;
1274};
1275
1276static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1277 struct ieee80211_vif *vif)
1278{
1279 struct iwl_mvm_mc_iter_data *data = _data;
1280 struct iwl_mvm *mvm = data->mvm;
1281 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1282 int ret, len;
1283
1284 /* if we don't have free ports, mcast frames will be dropped */
1285 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1286 return;
1287
1288 if (vif->type != NL80211_IFTYPE_STATION ||
1289 !vif->bss_conf.assoc)
1290 return;
1291
1292 cmd->port_id = data->port_id++;
1293 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1294 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1295
1c4abec0 1296 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
e59647ea
EP		 1297 if (ret)
1298 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1299}
1300
1301static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1302{
1303 struct iwl_mvm_mc_iter_data iter_data = {
1304 .mvm = mvm,
88f2fd73
MG		 1305 };
1306
e59647ea
EP		 1307 lockdep_assert_held(&mvm->mutex);
1308
1309 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1310 return;
1311
1c4abec0 1312 ieee80211_iterate_active_interfaces_atomic(
e59647ea
EP		 1313 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1314 iwl_mvm_mc_iface_iterator, &iter_data);
88f2fd73
MG		 1315}
1316
e59647ea
EP		 1317static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1318 struct netdev_hw_addr_list *mc_list)
8ca151b5 1319{
e59647ea
EP		 1320 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1321 struct iwl_mcast_filter_cmd *cmd;
1322 struct netdev_hw_addr *addr;
f3bd58f4
MS		 1323 int addr_count;
1324 bool pass_all;
e59647ea
EP		 1325 int len;
1326
f3bd58f4
MS		 1327 addr_count = netdev_hw_addr_list_count(mc_list);
1328 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1329 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1330 if (pass_all)
e59647ea 1331 addr_count = 0;
e59647ea
EP		 1332
1333 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1334 cmd = kzalloc(len, GFP_ATOMIC);
1335 if (!cmd)
1336 return 0;
1337
1338 if (pass_all) {
1339 cmd->pass_all = 1;
1340 return (u64)(unsigned long)cmd;
1341 }
1342
1343 netdev_hw_addr_list_for_each(addr, mc_list) {
1344 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1345 cmd->count, addr->addr);
1346 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1347 addr->addr, ETH_ALEN);
1348 cmd->count++;
1349 }
1350
1351 return (u64)(unsigned long)cmd;
8ca151b5
JB		 1352}
1353
1354static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1355 unsigned int changed_flags,
1356 unsigned int *total_flags,
1357 u64 multicast)
1358{
e59647ea
EP		 1359 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1360 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
8ca151b5 1361
e59647ea 1362 mutex_lock(&mvm->mutex);
51b6b9e0 1363
e59647ea
EP		 1364 /* replace previous configuration */
1365 kfree(mvm->mcast_filter_cmd);
1366 mvm->mcast_filter_cmd = cmd;
51b6b9e0 1367
e59647ea
EP		 1368 if (!cmd)
1369 goto out;
51b6b9e0 1370
e59647ea
EP		 1371 iwl_mvm_recalc_multicast(mvm);
1372out:
1373 mutex_unlock(&mvm->mutex);
1374 *total_flags = 0;
51b6b9e0
EG		 1375}
1376
c87163b9
EP		 1377#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1378struct iwl_bcast_iter_data {
1379 struct iwl_mvm *mvm;
1380 struct iwl_bcast_filter_cmd *cmd;
1381 u8 current_filter;
1382};
1383
1384static void
1385iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1386 const struct iwl_fw_bcast_filter *in_filter,
1387 struct iwl_fw_bcast_filter *out_filter)
1388{
1389 struct iwl_fw_bcast_filter_attr *attr;
1390 int i;
1391
1392 memcpy(out_filter, in_filter, sizeof(*out_filter));
1393
1394 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1395 attr = &out_filter->attrs[i];
1396
1397 if (!attr->mask)
1398 break;
1399
2ee8f021
EP		 1400 switch (attr->reserved1) {
1401 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1402 if (vif->bss_conf.arp_addr_cnt != 1) {
1403 attr->mask = 0;
1404 continue;
1405 }
1406
1407 attr->val = vif->bss_conf.arp_addr_list[0];
1408 break;
1409 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1410 attr->val = *(__be32 *)&vif->addr[2];
1411 break;
1412 default:
1413 break;
1414 }
1415 attr->reserved1 = 0;
c87163b9
EP		 1416 out_filter->num_attrs++;
1417 }
1418}
1419
1420static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1421 struct ieee80211_vif *vif)
1422{
1423 struct iwl_bcast_iter_data *data = _data;
1424 struct iwl_mvm *mvm = data->mvm;
1425 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1426 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1427 struct iwl_fw_bcast_mac *bcast_mac;
1428 int i;
1429
1430 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1431 return;
1432
1433 bcast_mac = &cmd->macs[mvmvif->id];
1434
e48393e8
IP		 1435 /*
1436 * enable filtering only for associated stations, but not for P2P
1437 * Clients
1438 */
1439 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1440 !vif->bss_conf.assoc)
c87163b9
EP		 1441 return;
1442
1443 bcast_mac->default_discard = 1;
1444
1445 /* copy all configured filters */
1446 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1447 /*
1448 * Make sure we don't exceed our filters limit.
1449 * if there is still a valid filter to be configured,
1450 * be on the safe side and just allow bcast for this mac.
1451 */
1452 if (WARN_ON_ONCE(data->current_filter >=
1453 ARRAY_SIZE(cmd->filters))) {
1454 bcast_mac->default_discard = 0;
1455 bcast_mac->attached_filters = 0;
1456 break;
1457 }
1458
1459 iwl_mvm_set_bcast_filter(vif,
1460 &mvm->bcast_filters[i],
1461 &cmd->filters[data->current_filter]);
1462
1463 /* skip current filter if it contains no attributes */
1464 if (!cmd->filters[data->current_filter].num_attrs)
1465 continue;
1466
1467 /* attach the filter to current mac */
1468 bcast_mac->attached_filters |=
1469 cpu_to_le16(BIT(data->current_filter));
1470
1471 data->current_filter++;
1472 }
1473}
1474
de06a59e
EP		 1475bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1476 struct iwl_bcast_filter_cmd *cmd)
c87163b9 1477{
c87163b9
EP		 1478 struct iwl_bcast_iter_data iter_data = {
1479 .mvm = mvm,
de06a59e 1480 .cmd = cmd,
c87163b9
EP		 1481 };
1482
3b8983b1
MS		 1483 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1484 return false;
1485
de06a59e
EP		 1486 memset(cmd, 0, sizeof(*cmd));
1487 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1488 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1489
1490#ifdef CONFIG_IWLWIFI_DEBUGFS
1491 /* use debugfs filters/macs if override is configured */
1492 if (mvm->dbgfs_bcast_filtering.override) {
1493 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1494 sizeof(cmd->filters));
1495 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1496 sizeof(cmd->macs));
1497 return true;
1498 }
1499#endif
c87163b9
EP		 1500
1501 /* if no filters are configured, do nothing */
1502 if (!mvm->bcast_filters)
de06a59e 1503 return false;
c87163b9
EP		 1504
1505 /* configure and attach these filters for each associated sta vif */
1506 ieee80211_iterate_active_interfaces(
1507 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1508 iwl_mvm_bcast_filter_iterator, &iter_data);
1509
de06a59e
EP		 1510 return true;
1511}
1512static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1513 struct ieee80211_vif *vif)
1514{
1515 struct iwl_bcast_filter_cmd cmd;
1516
1517 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1518 return 0;
1519
1520 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1521 return 0;
1522
a1022927 1523 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
c87163b9
EP		 1524 sizeof(cmd), &cmd);
1525}
1526#else
1527static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1528 struct ieee80211_vif *vif)
1529{
1530 return 0;
1531}
1532#endif
1533
8ca151b5
JB		 1534static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1535 struct ieee80211_vif *vif,
1536 struct ieee80211_bss_conf *bss_conf,
1537 u32 changes)
1538{
1539 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1540 int ret;
1541
6e97b0d2
IP		 1542 /*
1543 * Re-calculate the tsf id, as the master-slave relations depend on the
1544 * beacon interval, which was not known when the station interface was
1545 * added.
1546 */
1547 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1548 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1549
3dfd3a97
JB		 1550 /*
1551 * If we're not associated yet, take the (new) BSSID before associating
1552 * so the firmware knows. If we're already associated, then use the old
1553 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1554 * branch for disassociation below.
1555 */
1556 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1557 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1558
1559 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
8ca151b5
JB		 1560 if (ret)
1561 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1562
3dfd3a97
JB		 1563 /* after sending it once, adopt mac80211 data */
1564 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1565 mvmvif->associated = bss_conf->assoc;
1566
8ca151b5
JB		 1567 if (changes & BSS_CHANGED_ASSOC) {
1568 if (bss_conf->assoc) {
1569 /* add quota for this interface */
0166230c 1570 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1571 if (ret) {
1572 IWL_ERR(mvm, "failed to update quotas\n");
1573 return;
1574 }
016d27e1
JB		 1575
1576 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1577 &mvm->status)) {
1578 /*
1579 * If we're restarting then the firmware will
1580 * obviously have lost synchronisation with
1581 * the AP. It will attempt to synchronise by
1582 * itself, but we can make it more reliable by
1583 * scheduling a session protection time event.
1584 *
1585 * The firmware needs to receive a beacon to
1586 * catch up with synchronisation, use 110% of
1587 * the beacon interval.
1588 *
1589 * Set a large maximum delay to allow for more
1590 * than a single interface.
1591 */
1592 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1593 iwl_mvm_protect_session(mvm, vif, dur, dur,
d20d37bc 1594 5 * dur, false);
016d27e1 1595 }
1f3b0ff8
LE		 1596
1597 iwl_mvm_sf_update(mvm, vif, false);
175a70b7 1598 iwl_mvm_power_vif_assoc(mvm, vif);
697162a1 1599 if (vif->p2p) {
29a90a49 1600 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
697162a1
EG		 1601 iwl_mvm_update_smps(mvm, vif,
1602 IWL_MVM_SMPS_REQ_PROT,
1603 IEEE80211_SMPS_DYNAMIC);
1604 }
8ca151b5 1605 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1f3b0ff8
LE		 1606 /*
1607 * If update fails - SF might be running in associated
1608 * mode while disassociated - which is forbidden.
1609 */
1610 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1611 "Failed to update SF upon disassociation\n");
1612
8ca151b5
JB		 1613 /* remove AP station now that the MAC is unassoc */
1614 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1615 if (ret)
1616 IWL_ERR(mvm, "failed to remove AP station\n");
37577fe2
EP		 1617
1618 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1619 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
8ca151b5
JB		 1620 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1621 /* remove quota for this interface */
0166230c 1622 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1623 if (ret)
1624 IWL_ERR(mvm, "failed to update quotas\n");
29a90a49
EP		 1625
1626 if (vif->p2p)
1627 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
3dfd3a97
JB		 1628
1629 /* this will take the cleared BSSID from bss_conf */
1630 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1631 if (ret)
1632 IWL_ERR(mvm,
1633 "failed to update MAC %pM (clear after unassoc)\n",
1634 vif->addr);
8ca151b5 1635 }
a20fd398 1636
e59647ea 1637 iwl_mvm_recalc_multicast(mvm);
c87163b9 1638 iwl_mvm_configure_bcast_filter(mvm, vif);
e59647ea 1639
a20fd398
AO		 1640 /* reset rssi values */
1641 mvmvif->bf_data.ave_beacon_signal = 0;
1642
8e484f0b 1643 iwl_mvm_bt_coex_vif_change(mvm);
f94045ed
EG		 1644 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1645 IEEE80211_SMPS_AUTOMATIC);
989c6505 1646 } else if (changes & BSS_CHANGED_BEACON_INFO) {
210a544e
JB		 1647 /*
1648 * We received a beacon _after_ association so
1649 * remove the session protection.
1650 */
1651 iwl_mvm_remove_time_event(mvm, mvmvif,
1652 &mvmvif->time_event_data);
8ca151b5 1653 }
cc87d322
EH		 1654
1655 if (changes & BSS_CHANGED_BEACON_INFO) {
1656 iwl_mvm_sf_update(mvm, vif, false);
1657 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1658 }
1659
1bc10d3b
JB		 1660 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1661 ret = iwl_mvm_power_update_mac(mvm);
1662 if (ret)
1663 IWL_ERR(mvm, "failed to update power mode\n");
1664 }
1665
88f2fd73
MG		 1666 if (changes & BSS_CHANGED_TXPOWER) {
1667 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1668 bss_conf->txpower);
1669 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1670 }
a20fd398
AO		 1671
1672 if (changes & BSS_CHANGED_CQM) {
3c6acb61 1673 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
a20fd398
AO		 1674 /* reset cqm events tracking */
1675 mvmvif->bf_data.last_cqm_event = 0;
fa7b2e7f
AA		 1676 if (mvmvif->bf_data.bf_enabled) {
1677 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1678 if (ret)
1679 IWL_ERR(mvm,
1680 "failed to update CQM thresholds\n");
1681 }
a20fd398 1682 }
2ee8f021
EP		 1683
1684 if (changes & BSS_CHANGED_ARP_FILTER) {
3c6acb61 1685 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2ee8f021
EP		 1686 iwl_mvm_configure_bcast_filter(mvm, vif);
1687 }
8ca151b5
JB		 1688}
1689
5023d966
JB		 1690static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1691 struct ieee80211_vif *vif)
8ca151b5
JB		 1692{
1693 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1694 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1695 int ret;
1696
576eeee9
EP		 1697 /*
1698 * iwl_mvm_mac_ctxt_add() might read directly from the device
1699 * (the system time), so make sure it is available.
1700 */
1701 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1702 if (ret)
1703 return ret;
1704
8ca151b5
JB		 1705 mutex_lock(&mvm->mutex);
1706
1707 /* Send the beacon template */
1708 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1709 if (ret)
1710 goto out_unlock;
1711
6e97b0d2
IP		 1712 /*
1713 * Re-calculate the tsf id, as the master-slave relations depend on the
1714 * beacon interval, which was not known when the AP interface was added.
1715 */
1716 if (vif->type == NL80211_IFTYPE_AP)
1717 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1718
8ca151b5
JB		 1719 /* Add the mac context */
1720 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1721 if (ret)
1722 goto out_unlock;
1723
1724 /* Perform the binding */
1725 ret = iwl_mvm_binding_add_vif(mvm, vif);
1726 if (ret)
1727 goto out_remove;
1728
8ca151b5
JB		 1729 /* Send the bcast station. At this stage the TBTT and DTIM time events
1730 * are added and applied to the scheduler */
013290aa 1731 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1732 if (ret)
1733 goto out_unbind;
1734
5691e218
IP		 1735 /* must be set before quota calculations */
1736 mvmvif->ap_ibss_active = true;
1737
a11e144e 1738 /* power updated needs to be done before quotas */
999609f1 1739 iwl_mvm_power_update_mac(mvm);
a11e144e 1740
0166230c 1741 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5 1742 if (ret)
a11e144e 1743 goto out_quota_failed;
8ca151b5 1744
5023d966 1745 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1746 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 1747 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 1748
29a90a49
EP		 1749 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1750
8e484f0b 1751 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1752
f697267f
AN		 1753 /* we don't support TDLS during DCM */
1754 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1755 iwl_mvm_teardown_tdls_peers(mvm);
1756
8ca151b5
JB		 1757 mutex_unlock(&mvm->mutex);
1758 return 0;
1759
a11e144e 1760out_quota_failed:
999609f1 1761 iwl_mvm_power_update_mac(mvm);
5691e218 1762 mvmvif->ap_ibss_active = false;
013290aa 1763 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5
JB		 1764out_unbind:
1765 iwl_mvm_binding_remove_vif(mvm, vif);
1766out_remove:
1767 iwl_mvm_mac_ctxt_remove(mvm, vif);
1768out_unlock:
1769 mutex_unlock(&mvm->mutex);
576eeee9 1770 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
8ca151b5
JB		 1771 return ret;
1772}
1773
5023d966
JB		 1774static void iwl_mvm_stop_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
38a12b5b
JB		 1780 iwl_mvm_prepare_mac_removal(mvm, vif);
1781
8ca151b5
JB		 1782 mutex_lock(&mvm->mutex);
1783
664322fa 1784 /* Handle AP stop while in CSA */
7f0a7c67
AO		 1785 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1786 iwl_mvm_remove_time_event(mvm, mvmvif,
1787 &mvmvif->time_event_data);
664322fa 1788 RCU_INIT_POINTER(mvm->csa_vif, NULL);
7f0a7c67 1789 }
664322fa 1790
003e5236
AO		 1791 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1792 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1793 mvm->csa_tx_block_bcn_timeout = 0;
1794 }
1795
5023d966 1796 mvmvif->ap_ibss_active = false;
1c87bbad 1797 mvm->ap_last_beacon_gp2 = 0;
8ca151b5 1798
8e484f0b 1799 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1800
29a90a49
EP		 1801 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1802
5023d966 1803 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1804 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 1805 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 1806
0166230c 1807 iwl_mvm_update_quotas(mvm, NULL);
013290aa 1808 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5 1809 iwl_mvm_binding_remove_vif(mvm, vif);
a11e144e 1810
999609f1 1811 iwl_mvm_power_update_mac(mvm);
a11e144e 1812
8ca151b5
JB		 1813 iwl_mvm_mac_ctxt_remove(mvm, vif);
1814
1815 mutex_unlock(&mvm->mutex);
1816}
1817
5023d966
JB		 1818static void
1819iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1820 struct ieee80211_vif *vif,
1821 struct ieee80211_bss_conf *bss_conf,
1822 u32 changes)
8ca151b5 1823{
be2056fc 1824 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8a5e3660 1825
be2056fc
IP		 1826 /* Changes will be applied when the AP/IBSS is started */
1827 if (!mvmvif->ap_ibss_active)
1828 return;
1829
863230da 1830 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
f7d8b702 1831 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
3dfd3a97 1832 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
863230da 1833 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
8a5e3660 1834
8ca151b5 1835 /* Need to send a new beacon template to the FW */
863230da
JB		 1836 if (changes & BSS_CHANGED_BEACON &&
1837 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1838 IWL_WARN(mvm, "Failed updating beacon data\n");
79b7a69d
HD		 1839
1840 if (changes & BSS_CHANGED_TXPOWER) {
1841 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1842 bss_conf->txpower);
1843 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1844 }
1845
8ca151b5
JB		 1846}
1847
1848static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1849 struct ieee80211_vif *vif,
1850 struct ieee80211_bss_conf *bss_conf,
1851 u32 changes)
1852{
1853 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1854
576eeee9
EP		 1855 /*
1856 * iwl_mvm_bss_info_changed_station() might call
1857 * iwl_mvm_protect_session(), which reads directly from
1858 * the device (the system time), so make sure it is available.
1859 */
1860 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1861 return;
1862
8ca151b5
JB		 1863 mutex_lock(&mvm->mutex);
1864
723f02ed 1865 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
fb98be5e 1866 iwl_mvm_scan_offload_stop(mvm, true);
723f02ed 1867
8ca151b5
JB		 1868 switch (vif->type) {
1869 case NL80211_IFTYPE_STATION:
1870 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1871 break;
1872 case NL80211_IFTYPE_AP:
5023d966
JB		 1873 case NL80211_IFTYPE_ADHOC:
1874 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
8ca151b5
JB		 1875 break;
1876 default:
1877 /* shouldn't happen */
1878 WARN_ON_ONCE(1);
1879 }
1880
1881 mutex_unlock(&mvm->mutex);
576eeee9 1882 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
8ca151b5
JB		 1883}
1884
4660dfbb
EP		 1885static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1886 enum iwl_scan_status scan_type)
1887{
1888 int ret;
1889 bool wait_for_handlers = false;
1890
1891 mutex_lock(&mvm->mutex);
1892
1893 if (mvm->scan_status != scan_type) {
1894 ret = 0;
1895 /* make sure there are no pending notifications */
1896 wait_for_handlers = true;
1897 goto out;
1898 }
1899
1900 switch (scan_type) {
1901 case IWL_MVM_SCAN_SCHED:
1902 ret = iwl_mvm_scan_offload_stop(mvm, true);
1903 break;
1904 case IWL_MVM_SCAN_OS:
1905 ret = iwl_mvm_cancel_scan(mvm);
1906 break;
1907 case IWL_MVM_SCAN_NONE:
1908 default:
1909 WARN_ON_ONCE(1);
1910 ret = -EINVAL;
1911 break;
1912 }
1913 if (ret)
1914 goto out;
1915
1916 wait_for_handlers = true;
1917out:
1918 mutex_unlock(&mvm->mutex);
1919
1920 /* make sure we consume the completion notification */
1921 if (wait_for_handlers)
1922 iwl_mvm_wait_for_async_handlers(mvm);
1923
1924 return ret;
1925}
8ca151b5
JB		 1926static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1927 struct ieee80211_vif *vif,
c56ef672 1928 struct ieee80211_scan_request *hw_req)
8ca151b5
JB		 1929{
1930 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
c56ef672 1931 struct cfg80211_scan_request *req = &hw_req->req;
8ca151b5
JB		 1932 int ret;
1933
762533ba
DS		 1934 if (req->n_channels == 0 ||
1935 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
8ca151b5
JB		 1936 return -EINVAL;
1937
4660dfbb
EP		 1938 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1939 if (ret)
1940 return ret;
1941
8ca151b5
JB		 1942 mutex_lock(&mvm->mutex);
1943
4660dfbb 1944 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
8ca151b5 1945 ret = -EBUSY;
519e2026
AN		 1946 goto out;
1947 }
8ca151b5 1948
519e2026
AN		 1949 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1950
fb98be5e
DS		 1951 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1952 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1953 else
1954 ret = iwl_mvm_scan_request(mvm, vif, req);
1955
519e2026
AN		 1956 if (ret)
1957 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1958out:
8ca151b5 1959 mutex_unlock(&mvm->mutex);
8ca151b5
JB		 1960 return ret;
1961}
1962
1963static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1964 struct ieee80211_vif *vif)
1965{
1966 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1967
1968 mutex_lock(&mvm->mutex);
1969
1970 iwl_mvm_cancel_scan(mvm);
1971
1972 mutex_unlock(&mvm->mutex);
1973}
1974
1975static void
1976iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
3e56eadf 1977 struct ieee80211_sta *sta, u16 tids,
8ca151b5
JB		 1978 int num_frames,
1979 enum ieee80211_frame_release_type reason,
1980 bool more_data)
1981{
1982 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5 1983
3e56eadf 1984 /* Called when we need to transmit (a) frame(s) from mac80211 */
8ca151b5 1985
3e56eadf
JB		 1986 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1987 tids, more_data, false);
1988}
1989
1990static void
1991iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1992 struct ieee80211_sta *sta, u16 tids,
1993 int num_frames,
1994 enum ieee80211_frame_release_type reason,
1995 bool more_data)
1996{
1997 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1998
1999 /* Called when we need to transmit (a) frame(s) from agg queue */
2000
2001 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2002 tids, more_data, true);
8ca151b5
JB		 2003}
2004
2005static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2006 struct ieee80211_vif *vif,
2007 enum sta_notify_cmd cmd,
2008 struct ieee80211_sta *sta)
2009{
2010 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5b577a90 2011 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3e56eadf 2012 int tid;
8ca151b5
JB		 2013
2014 switch (cmd) {
2015 case STA_NOTIFY_SLEEP:
e3d4bc8c 2016 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5 2017 ieee80211_sta_block_awake(hw, sta, true);
3e56eadf
JB		 2018 spin_lock_bh(&mvmsta->lock);
2019 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2020 struct iwl_mvm_tid_data *tid_data;
2021
2022 tid_data = &mvmsta->tid_data[tid];
2023 if (tid_data->state != IWL_AGG_ON &&
2024 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2025 continue;
2026 if (iwl_mvm_tid_queued(tid_data) == 0)
2027 continue;
2028 ieee80211_sta_set_buffered(sta, tid, true);
2029 }
2030 spin_unlock_bh(&mvmsta->lock);
8ca151b5
JB		 2031 /*
2032 * The fw updates the STA to be asleep. Tx packets on the Tx
2033 * queues to this station will not be transmitted. The fw will
2034 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2035 */
2036 break;
2037 case STA_NOTIFY_AWAKE:
881acd89 2038 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
8ca151b5 2039 break;
9cc40712 2040 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 2041 break;
2042 default:
2043 break;
2044 }
2045}
2046
1ddbbb0c
JB		 2047static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2048 struct ieee80211_vif *vif,
2049 struct ieee80211_sta *sta)
2050{
2051 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2052 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2053
2054 /*
2055 * This is called before mac80211 does RCU synchronisation,
2056 * so here we already invalidate our internal RCU-protected
2057 * station pointer. The rest of the code will thus no longer
2058 * be able to find the station this way, and we don't rely
2059 * on further RCU synchronisation after the sta_state()
2060 * callback deleted the station.
2061 */
2062 mutex_lock(&mvm->mutex);
2063 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2064 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2065 ERR_PTR(-ENOENT));
2066 mutex_unlock(&mvm->mutex);
2067}
2068
8ca151b5
JB		 2069static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2070 struct ieee80211_vif *vif,
2071 struct ieee80211_sta *sta,
2072 enum ieee80211_sta_state old_state,
2073 enum ieee80211_sta_state new_state)
2074{
2075 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2076 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2077 int ret;
2078
2079 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2080 sta->addr, old_state, new_state);
2081
2082 /* this would be a mac80211 bug ... but don't crash */
2083 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2084 return -EINVAL;
2085
2086 /* if a STA is being removed, reuse its ID */
2087 flush_work(&mvm->sta_drained_wk);
2088
2089 mutex_lock(&mvm->mutex);
2090 if (old_state == IEEE80211_STA_NOTEXIST &&
2091 new_state == IEEE80211_STA_NONE) {
48bc1307
JB		 2092 /*
2093 * Firmware bug - it'll crash if the beacon interval is less
2094 * than 16. We can't avoid connecting at all, so refuse the
2095 * station state change, this will cause mac80211 to abandon
2096 * attempts to connect to this AP, and eventually wpa_s will
2097 * blacklist the AP...
2098 */
2099 if (vif->type == NL80211_IFTYPE_STATION &&
2100 vif->bss_conf.beacon_int < 16) {
2101 IWL_ERR(mvm,
2102 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2103 sta->addr, vif->bss_conf.beacon_int);
2104 ret = -EINVAL;
2105 goto out_unlock;
2106 }
cf7b491d
AN		 2107
2108 if (sta->tdls &&
2109 (vif->p2p ||
fa3d07e4
AN		 2110 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2111 IWL_MVM_TDLS_STA_COUNT ||
cf7b491d
AN		 2112 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2113 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2114 ret = -EBUSY;
2115 goto out_unlock;
2116 }
2117
8ca151b5 2118 ret = iwl_mvm_add_sta(mvm, vif, sta);
fa3d07e4
AN		 2119 if (sta->tdls && ret == 0)
2120 iwl_mvm_recalc_tdls_state(mvm, vif, true);
8ca151b5
JB		 2121 } else if (old_state == IEEE80211_STA_NONE &&
2122 new_state == IEEE80211_STA_AUTH) {
e820c2da
HD		 2123 /*
2124 * EBS may be disabled due to previous failures reported by FW.
2125 * Reset EBS status here assuming environment has been changed.
2126 */
2127 mvm->last_ebs_successful = true;
8ca151b5
JB		 2128 ret = 0;
2129 } else if (old_state == IEEE80211_STA_AUTH &&
2130 new_state == IEEE80211_STA_ASSOC) {
7a453973
JB		 2131 ret = iwl_mvm_update_sta(mvm, vif, sta);
2132 if (ret == 0)
2133 iwl_mvm_rs_rate_init(mvm, sta,
b87c2179
ES		 2134 mvmvif->phy_ctxt->channel->band,
2135 true);
8ca151b5
JB		 2136 } else if (old_state == IEEE80211_STA_ASSOC &&
2137 new_state == IEEE80211_STA_AUTHORIZED) {
f59e0e3c
AN		 2138
2139 /* we don't support TDLS during DCM */
2140 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2141 iwl_mvm_teardown_tdls_peers(mvm);
2142
7df15b1e 2143 /* enable beacon filtering */
fa7b2e7f 2144 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2145 ret = 0;
2146 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2147 new_state == IEEE80211_STA_ASSOC) {
7df15b1e 2148 /* disable beacon filtering */
a1022927 2149 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2150 ret = 0;
2151 } else if (old_state == IEEE80211_STA_ASSOC &&
2152 new_state == IEEE80211_STA_AUTH) {
2153 ret = 0;
2154 } else if (old_state == IEEE80211_STA_AUTH &&
2155 new_state == IEEE80211_STA_NONE) {
2156 ret = 0;
2157 } else if (old_state == IEEE80211_STA_NONE &&
2158 new_state == IEEE80211_STA_NOTEXIST) {
2159 ret = iwl_mvm_rm_sta(mvm, vif, sta);
fa3d07e4
AN		 2160 if (sta->tdls)
2161 iwl_mvm_recalc_tdls_state(mvm, vif, false);
8ca151b5
JB		 2162 } else {
2163 ret = -EIO;
2164 }
48bc1307 2165 out_unlock:
8ca151b5
JB		 2166 mutex_unlock(&mvm->mutex);
2167
2168 return ret;
2169}
2170
2171static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2172{
2173 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2174
2175 mvm->rts_threshold = value;
2176
2177 return 0;
2178}
2179
1f3b0ff8
LE		 2180static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2181 struct ieee80211_vif *vif,
2182 struct ieee80211_sta *sta, u32 changed)
2183{
2184 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2185
2186 if (vif->type == NL80211_IFTYPE_STATION &&
2187 changed & IEEE80211_RC_NSS_CHANGED)
2188 iwl_mvm_sf_update(mvm, vif, false);
2189}
2190
8ca151b5
JB		 2191static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2192 struct ieee80211_vif *vif, u16 ac,
2193 const struct ieee80211_tx_queue_params *params)
2194{
2195 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2196 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2197
2198 mvmvif->queue_params[ac] = *params;
2199
2200 /*
2201 * No need to update right away, we'll get BSS_CHANGED_QOS
2202 * The exception is P2P_DEVICE interface which needs immediate update.
2203 */
2204 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2205 int ret;
2206
2207 mutex_lock(&mvm->mutex);
3dfd3a97 2208 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
8ca151b5
JB		 2209 mutex_unlock(&mvm->mutex);
2210 return ret;
2211 }
2212 return 0;
2213}
2214
2215static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2216 struct ieee80211_vif *vif)
2217{
2218 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2219 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2220 200 + vif->bss_conf.beacon_int);
2221 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2222 100 + vif->bss_conf.beacon_int);
2223
2224 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2225 return;
2226
576eeee9
EP		 2227 /*
2228 * iwl_mvm_protect_session() reads directly from the device
2229 * (the system time), so make sure it is available.
2230 */
2231 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2232 return;
2233
8ca151b5
JB		 2234 mutex_lock(&mvm->mutex);
2235 /* Try really hard to protect the session and hear a beacon */
d20d37bc 2236 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
8ca151b5 2237 mutex_unlock(&mvm->mutex);
576eeee9
EP		 2238
2239 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
8ca151b5
JB		 2240}
2241
35a000b7
DS		 2242static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2243 struct ieee80211_vif *vif,
2244 struct cfg80211_sched_scan_request *req,
633e2713 2245 struct ieee80211_scan_ies *ies)
35a000b7
DS		 2246{
2247 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2248 int ret;
2249
4660dfbb
EP		 2250 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2251 if (ret)
2252 return ret;
2253
35a000b7
DS		 2254 mutex_lock(&mvm->mutex);
2255
59ecb128
AB		 2256 /* Newest FW fixes sched scan while connected on another interface */
2257 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2258 if (!vif->bss_conf.idle) {
2259 ret = -EBUSY;
2260 goto out;
2261 }
2262 } else if (!iwl_mvm_is_idle(mvm)) {
bd5e4744
DS		 2263 ret = -EBUSY;
2264 goto out;
2265 }
2266
4660dfbb 2267 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
35a000b7
DS		 2268 ret = -EBUSY;
2269 goto out;
2270 }
2271
2272 mvm->scan_status = IWL_MVM_SCAN_SCHED;
2273
b141c235 2274 ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
35a000b7 2275 if (ret)
b141c235 2276 mvm->scan_status = IWL_MVM_SCAN_NONE;
35a000b7
DS		 2277out:
2278 mutex_unlock(&mvm->mutex);
2279 return ret;
2280}
2281
37e3308c
JB		 2282static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2283 struct ieee80211_vif *vif)
35a000b7
DS		 2284{
2285 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
33ea27f6 2286 int ret;
35a000b7
DS		 2287
2288 mutex_lock(&mvm->mutex);
fb98be5e 2289 ret = iwl_mvm_scan_offload_stop(mvm, false);
35a000b7 2290 mutex_unlock(&mvm->mutex);
33ea27f6 2291 iwl_mvm_wait_for_async_handlers(mvm);
37e3308c 2292
33ea27f6 2293 return ret;
35a000b7
DS		 2294}
2295
8ca151b5
JB		 2296static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2297 enum set_key_cmd cmd,
2298 struct ieee80211_vif *vif,
2299 struct ieee80211_sta *sta,
2300 struct ieee80211_key_conf *key)
2301{
2302 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2303 int ret;
2304
2305 if (iwlwifi_mod_params.sw_crypto) {
2306 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2307 return -EOPNOTSUPP;
2308 }
2309
2310 switch (key->cipher) {
2311 case WLAN_CIPHER_SUITE_TKIP:
2312 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2313 /* fall-through */
2314 case WLAN_CIPHER_SUITE_CCMP:
2315 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2316 break;
2317 case WLAN_CIPHER_SUITE_AES_CMAC:
2318 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2319 break;
2320 case WLAN_CIPHER_SUITE_WEP40:
2321 case WLAN_CIPHER_SUITE_WEP104:
2322 /*
2323 * Support for TX only, at least for now, so accept
2324 * the key and do nothing else. Then mac80211 will
2325 * pass it for TX but we don't have to use it for RX.
2326 */
2327 return 0;
2328 default:
e36e5433
MS		 2329 /* currently FW supports only one optional cipher scheme */
2330 if (hw->n_cipher_schemes &&
2331 hw->cipher_schemes->cipher == key->cipher)
2332 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2333 else
2334 return -EOPNOTSUPP;
8ca151b5
JB		 2335 }
2336
2337 mutex_lock(&mvm->mutex);
2338
2339 switch (cmd) {
2340 case SET_KEY:
5023d966
JB		 2341 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2342 vif->type == NL80211_IFTYPE_AP) && !sta) {
2343 /*
2344 * GTK on AP interface is a TX-only key, return 0;
2345 * on IBSS they're per-station and because we're lazy
2346 * we don't support them for RX, so do the same.
2347 */
6caffd4f
JB		 2348 ret = 0;
2349 key->hw_key_idx = STA_KEY_IDX_INVALID;
2350 break;
2351 }
2352
8ca151b5
JB		 2353 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2354 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2355 if (ret) {
2356 IWL_WARN(mvm, "set key failed\n");
2357 /*
2358 * can't add key for RX, but we don't need it
2359 * in the device for TX so still return 0
2360 */
6caffd4f 2361 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 2362 ret = 0;
2363 }
2364
2365 break;
2366 case DISABLE_KEY:
6caffd4f
JB		 2367 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2368 ret = 0;
2369 break;
2370 }
2371
8ca151b5
JB		 2372 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2373 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2374 break;
2375 default:
2376 ret = -EINVAL;
2377 }
2378
2379 mutex_unlock(&mvm->mutex);
2380 return ret;
2381}
2382
2383static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2384 struct ieee80211_vif *vif,
2385 struct ieee80211_key_conf *keyconf,
2386 struct ieee80211_sta *sta,
2387 u32 iv32, u16 *phase1key)
2388{
2389 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2390
5023d966
JB		 2391 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2392 return;
2393
8ca151b5
JB		 2394 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2395}
2396
2397
b112889c
AM		 2398static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2399 struct iwl_rx_packet *pkt, void *data)
2400{
2401 struct iwl_mvm *mvm =
2402 container_of(notif_wait, struct iwl_mvm, notif_wait);
2403 struct iwl_hs20_roc_res *resp;
2404 int resp_len = iwl_rx_packet_payload_len(pkt);
2405 struct iwl_mvm_time_event_data *te_data = data;
2406
2407 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2408 return true;
2409
2410 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2411 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2412 return true;
2413 }
2414
2415 resp = (void *)pkt->data;
2416
2417 IWL_DEBUG_TE(mvm,
2418 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2419 resp->status, resp->event_unique_id);
2420
2421 te_data->uid = le32_to_cpu(resp->event_unique_id);
2422 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2423 te_data->uid);
2424
2425 spin_lock_bh(&mvm->time_event_lock);
2426 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2427 spin_unlock_bh(&mvm->time_event_lock);
2428
2429 return true;
2430}
2431
2432#define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2433static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2434 struct ieee80211_channel *channel,
2435 struct ieee80211_vif *vif,
2436 int duration)
2437{
2438 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2439 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2440 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2441 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2442 struct iwl_notification_wait wait_time_event;
2443 struct iwl_hs20_roc_req aux_roc_req = {
2444 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2445 .id_and_color =
2446 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2447 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2448 /* Set the channel info data */
2449 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2450 PHY_BAND_24 : PHY_BAND_5,
2451 .channel_info.channel = channel->hw_value,
2452 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2453 /* Set the time and duration */
2454 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2455 .apply_time_max_delay =
2456 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2457 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2458 };
2459
2460 /* Set the node address */
2461 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2462
a6cc5163
MG		 2463 lockdep_assert_held(&mvm->mutex);
2464
2465 spin_lock_bh(&mvm->time_event_lock);
2466
2467 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2468 spin_unlock_bh(&mvm->time_event_lock);
2469 return -EIO;
2470 }
2471
b112889c
AM		 2472 te_data->vif = vif;
2473 te_data->duration = duration;
2474 te_data->id = HOT_SPOT_CMD;
2475
b112889c
AM		 2476 spin_unlock_bh(&mvm->time_event_lock);
2477
2478 /*
2479 * Use a notification wait, which really just processes the
2480 * command response and doesn't wait for anything, in order
2481 * to be able to process the response and get the UID inside
2482 * the RX path. Using CMD_WANT_SKB doesn't work because it
2483 * stores the buffer and then wakes up this thread, by which
2484 * time another notification (that the time event started)
2485 * might already be processed unsuccessfully.
2486 */
2487 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2488 time_event_response,
2489 ARRAY_SIZE(time_event_response),
2490 iwl_mvm_rx_aux_roc, te_data);
2491
2492 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2493 &aux_roc_req);
2494
2495 if (res) {
2496 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2497 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2498 goto out_clear_te;
2499 }
2500
2501 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2502 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2503 /* should never fail */
2504 WARN_ON_ONCE(res);
2505
2506 if (res) {
2507 out_clear_te:
2508 spin_lock_bh(&mvm->time_event_lock);
2509 iwl_mvm_te_clear_data(mvm, te_data);
2510 spin_unlock_bh(&mvm->time_event_lock);
2511 }
2512
2513 return res;
2514}
2515
8ca151b5
JB		 2516static int iwl_mvm_roc(struct ieee80211_hw *hw,
2517 struct ieee80211_vif *vif,
2518 struct ieee80211_channel *channel,
d339d5ca
IP		 2519 int duration,
2520 enum ieee80211_roc_type type)
8ca151b5
JB		 2521{
2522 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 2523 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 2524 struct cfg80211_chan_def chandef;
31d385ae
IP		 2525 struct iwl_mvm_phy_ctxt *phy_ctxt;
2526 int ret, i;
2527
2528 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2529 duration, type);
8ca151b5 2530
a6cc5163
MG		 2531 mutex_lock(&mvm->mutex);
2532
b112889c
AM		 2533 switch (vif->type) {
2534 case NL80211_IFTYPE_STATION:
2535 /* Use aux roc framework (HS20) */
2536 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2537 vif, duration);
a6cc5163 2538 goto out_unlock;
b112889c
AM		 2539 case NL80211_IFTYPE_P2P_DEVICE:
2540 /* handle below */
2541 break;
2542 default:
2543 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
a6cc5163
MG		 2544 ret = -EINVAL;
2545 goto out_unlock;
8ca151b5
JB		 2546 }
2547
31d385ae
IP		 2548 for (i = 0; i < NUM_PHY_CTX; i++) {
2549 phy_ctxt = &mvm->phy_ctxts[i];
2550 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2551 continue;
2552
2553 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2554 /*
2555 * Unbind the P2P_DEVICE from the current PHY context,
2556 * and if the PHY context is not used remove it.
2557 */
2558 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2559 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2560 goto out_unlock;
2561
2562 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2563
2564 /* Bind the P2P_DEVICE to the current PHY Context */
2565 mvmvif->phy_ctxt = phy_ctxt;
2566
2567 ret = iwl_mvm_binding_add_vif(mvm, vif);
2568 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2569 goto out_unlock;
2570
2571 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2572 goto schedule_time_event;
2573 }
2574 }
2575
2576 /* Need to update the PHY context only if the ROC channel changed */
2577 if (channel == mvmvif->phy_ctxt->channel)
2578 goto schedule_time_event;
2579
8ca151b5 2580 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 2581
31d385ae
IP		 2582 /*
2583 * Change the PHY context configuration as it is currently referenced
2584 * only by the P2P Device MAC
2585 */
2586 if (mvmvif->phy_ctxt->ref == 1) {
2587 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2588 &chandef, 1, 1);
2589 if (ret)
2590 goto out_unlock;
2591 } else {
2592 /*
2593 * The PHY context is shared with other MACs. Need to remove the
2594 * P2P Device from the binding, allocate an new PHY context and
2595 * create a new binding
2596 */
2597 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2598 if (!phy_ctxt) {
2599 ret = -ENOSPC;
2600 goto out_unlock;
2601 }
2602
2603 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2604 1, 1);
2605 if (ret) {
2606 IWL_ERR(mvm, "Failed to change PHY context\n");
2607 goto out_unlock;
2608 }
2609
2610 /* Unbind the P2P_DEVICE from the current PHY context */
2611 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2612 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2613 goto out_unlock;
2614
2615 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2616
2617 /* Bind the P2P_DEVICE to the new allocated PHY context */
2618 mvmvif->phy_ctxt = phy_ctxt;
2619
2620 ret = iwl_mvm_binding_add_vif(mvm, vif);
2621 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2622 goto out_unlock;
2623
2624 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2625 }
2626
2627schedule_time_event:
8ca151b5 2628 /* Schedule the time events */
e635c797 2629 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 2630
31d385ae 2631out_unlock:
8ca151b5
JB		 2632 mutex_unlock(&mvm->mutex);
2633 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 2634 return ret;
2635}
2636
2637static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2638{
2639 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2640
2641 IWL_DEBUG_MAC80211(mvm, "enter\n");
2642
2643 mutex_lock(&mvm->mutex);
2644 iwl_mvm_stop_p2p_roc(mvm);
2645 mutex_unlock(&mvm->mutex);
2646
2647 IWL_DEBUG_MAC80211(mvm, "leave\n");
2648 return 0;
2649}
2650
b08c1d97
LC		 2651static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2652 struct ieee80211_chanctx_conf *ctx)
8ca151b5 2653{
fe0f2de3
IP		 2654 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2655 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 2656 int ret;
2657
b08c1d97
LC		 2658 lockdep_assert_held(&mvm->mutex);
2659
53a9d61e 2660 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 2661
fe0f2de3
IP		 2662 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2663 if (!phy_ctxt) {
2664 ret = -ENOSPC;
2665 goto out;
2666 }
8ca151b5 2667
dcbc3e1a 2668 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
53a9d61e
IP		 2669 ctx->rx_chains_static,
2670 ctx->rx_chains_dynamic);
fe0f2de3
IP		 2671 if (ret) {
2672 IWL_ERR(mvm, "Failed to add PHY context\n");
2673 goto out;
2674 }
2675
53a9d61e 2676 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 2677 *phy_ctxt_id = phy_ctxt->id;
2678out:
b08c1d97
LC		 2679 return ret;
2680}
2681
2682static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2683 struct ieee80211_chanctx_conf *ctx)
2684{
2685 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2686 int ret;
2687
2688 mutex_lock(&mvm->mutex);
2689 ret = __iwl_mvm_add_chanctx(mvm, ctx);
8ca151b5 2690 mutex_unlock(&mvm->mutex);
b08c1d97 2691
8ca151b5
JB		 2692 return ret;
2693}
2694
b08c1d97
LC		 2695static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2696 struct ieee80211_chanctx_conf *ctx)
2697{
2698 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2699 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2700
2701 lockdep_assert_held(&mvm->mutex);
2702
2703 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2704}
2705
8ca151b5
JB		 2706static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2707 struct ieee80211_chanctx_conf *ctx)
2708{
2709 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 2710
2711 mutex_lock(&mvm->mutex);
b08c1d97 2712 __iwl_mvm_remove_chanctx(mvm, ctx);
8ca151b5
JB		 2713 mutex_unlock(&mvm->mutex);
2714}
2715
2716static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2717 struct ieee80211_chanctx_conf *ctx,
2718 u32 changed)
2719{
2720 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 2721 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2722 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 2723
31d385ae
IP		 2724 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2725 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2726 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2dceedae
AN		 2727 IEEE80211_CHANCTX_CHANGE_RADAR |
2728 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
31d385ae
IP		 2729 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2730 phy_ctxt->ref, changed))
2731 return;
2732
8ca151b5 2733 mutex_lock(&mvm->mutex);
4d66449a 2734 iwl_mvm_bt_coex_vif_change(mvm);
dcbc3e1a 2735 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
8ca151b5
JB		 2736 ctx->rx_chains_static,
2737 ctx->rx_chains_dynamic);
2738 mutex_unlock(&mvm->mutex);
2739}
2740
b08c1d97
LC		 2741static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2742 struct ieee80211_vif *vif,
f0c97783
LC		 2743 struct ieee80211_chanctx_conf *ctx,
2744 bool switching_chanctx)
8ca151b5 2745{
fe0f2de3
IP		 2746 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2747 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 2748 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2749 int ret;
2750
b08c1d97 2751 lockdep_assert_held(&mvm->mutex);
8ca151b5 2752
fe0f2de3 2753 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 2754
2755 switch (vif->type) {
2756 case NL80211_IFTYPE_AP:
bd3398e2
AO		 2757 /* Unless it's a CSA flow we have nothing to do here */
2758 if (vif->csa_active) {
2759 mvmvif->ap_ibss_active = true;
2760 break;
2761 }
5023d966 2762 case NL80211_IFTYPE_ADHOC:
8ca151b5
JB		 2763 /*
2764 * The AP binding flow is handled as part of the start_ap flow
5023d966 2765 * (in bss_info_changed), similarly for IBSS.
8ca151b5
JB		 2766 */
2767 ret = 0;
b08c1d97 2768 goto out;
8ca151b5 2769 case NL80211_IFTYPE_STATION:
2533edce 2770 break;
8ca151b5 2771 case NL80211_IFTYPE_MONITOR:
2533edce
LC		 2772 /* always disable PS when a monitor interface is active */
2773 mvmvif->ps_disabled = true;
8ca151b5
JB		 2774 break;
2775 default:
2776 ret = -EINVAL;
b08c1d97 2777 goto out;
8ca151b5
JB		 2778 }
2779
2780 ret = iwl_mvm_binding_add_vif(mvm, vif);
2781 if (ret)
b08c1d97 2782 goto out;
8ca151b5
JB		 2783
2784 /*
92d85562
AB		 2785 * Power state must be updated before quotas,
2786 * otherwise fw will complain.
2787 */
999609f1 2788 iwl_mvm_power_update_mac(mvm);
92d85562
AB		 2789
2790 /* Setting the quota at this stage is only required for monitor
8ca151b5
JB		 2791 * interfaces. For the other types, the bss_info changed flow
2792 * will handle quota settings.
2793 */
2794 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 2795 mvmvif->monitor_active = true;
0166230c 2796 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 2797 if (ret)
2798 goto out_remove_binding;
2799 }
2800
bd3398e2 2801 /* Handle binding during CSA */
f0c97783
LC		 2802 if ((vif->type == NL80211_IFTYPE_AP) ||
2803 (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) {
0166230c 2804 iwl_mvm_update_quotas(mvm, NULL);
3dfd3a97 2805 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
bd3398e2
AO		 2806 }
2807
0ce04ce7
LC		 2808 if (vif->csa_active && vif->type == NL80211_IFTYPE_STATION) {
2809 struct iwl_mvm_sta *mvmsta;
2810
2811 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
2812 mvmvif->ap_sta_id);
2813
2814 if (WARN_ON(!mvmsta))
2815 goto out;
2816
2817 /* TODO: only re-enable after the first beacon */
2818 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
2819 }
2820
b08c1d97 2821 goto out;
8ca151b5 2822
b08c1d97 2823out_remove_binding:
8ca151b5 2824 iwl_mvm_binding_remove_vif(mvm, vif);
999609f1 2825 iwl_mvm_power_update_mac(mvm);
b08c1d97 2826out:
8ca151b5
JB		 2827 if (ret)
2828 mvmvif->phy_ctxt = NULL;
2829 return ret;
2830}
b08c1d97
LC		 2831static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2832 struct ieee80211_vif *vif,
2833 struct ieee80211_chanctx_conf *ctx)
8ca151b5
JB		 2834{
2835 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
b08c1d97 2836 int ret;
8ca151b5
JB		 2837
2838 mutex_lock(&mvm->mutex);
f0c97783 2839 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
b08c1d97
LC		 2840 mutex_unlock(&mvm->mutex);
2841
2842 return ret;
2843}
2844
2845static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2846 struct ieee80211_vif *vif,
f0c97783
LC		 2847 struct ieee80211_chanctx_conf *ctx,
2848 bool switching_chanctx)
b08c1d97
LC		 2849{
2850 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
f0c97783 2851 struct ieee80211_vif *disabled_vif = NULL;
0ce04ce7 2852 struct iwl_mvm_sta *mvmsta;
b08c1d97
LC		 2853
2854 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 2855
2856 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2857
8ca151b5 2858 switch (vif->type) {
5023d966 2859 case NL80211_IFTYPE_ADHOC:
b08c1d97 2860 goto out;
8ca151b5 2861 case NL80211_IFTYPE_MONITOR:
1e1391ca 2862 mvmvif->monitor_active = false;
2533edce 2863 mvmvif->ps_disabled = false;
8ca151b5 2864 break;
bd3398e2
AO		 2865 case NL80211_IFTYPE_AP:
2866 /* This part is triggered only during CSA */
2867 if (!vif->csa_active || !mvmvif->ap_ibss_active)
b08c1d97 2868 goto out;
bd3398e2 2869
003e5236
AO		 2870 /* Set CS bit on all the stations */
2871 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2872
2873 /* Save blocked iface, the timeout is set on the next beacon */
2874 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2875
bd3398e2 2876 mvmvif->ap_ibss_active = false;
f0c97783
LC		 2877 break;
2878 case NL80211_IFTYPE_STATION:
2879 if (!switching_chanctx)
2880 break;
2881
2882 disabled_vif = vif;
2883
0ce04ce7
LC		 2884 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
2885 mvmvif->ap_sta_id);
2886
2887 if (!WARN_ON(!mvmsta))
2888 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
2889
3dfd3a97 2890 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
f0c97783 2891 break;
8ca151b5
JB		 2892 default:
2893 break;
2894 }
2895
f0c97783 2896 iwl_mvm_update_quotas(mvm, disabled_vif);
1e1391ca 2897 iwl_mvm_binding_remove_vif(mvm, vif);
1c2abf72 2898
b08c1d97 2899out:
a11e144e 2900 mvmvif->phy_ctxt = NULL;
999609f1 2901 iwl_mvm_power_update_mac(mvm);
b08c1d97
LC		 2902}
2903
2904static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2905 struct ieee80211_vif *vif,
2906 struct ieee80211_chanctx_conf *ctx)
2907{
2908 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2909
2910 mutex_lock(&mvm->mutex);
f0c97783 2911 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
8ca151b5
JB		 2912 mutex_unlock(&mvm->mutex);
2913}
2914
b08c1d97
LC		 2915static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
2916 struct ieee80211_vif_chanctx_switch *vifs,
2917 int n_vifs,
2918 enum ieee80211_chanctx_switch_mode mode)
2919{
2920 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2921 int ret;
2922
2923 /* we only support SWAP_CONTEXTS and with a single-vif right now */
2924 if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1)
2925 return -EOPNOTSUPP;
2926
2927 mutex_lock(&mvm->mutex);
f0c97783 2928 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
b08c1d97
LC		 2929 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2930
2931 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2932 if (ret) {
2933 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2934 goto out_reassign;
2935 }
2936
f0c97783
LC		 2937 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2938 true);
b08c1d97
LC		 2939 if (ret) {
2940 IWL_ERR(mvm,
2941 "failed to assign new_ctx during channel switch\n");
2942 goto out_remove;
2943 }
2944
f697267f
AN		 2945 /* we don't support TDLS during DCM - can be caused by channel switch */
2946 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2947 iwl_mvm_teardown_tdls_peers(mvm);
2948
b08c1d97
LC		 2949 goto out;
2950
2951out_remove:
2952 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
2953
2954out_reassign:
2955 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx);
2956 if (ret) {
2957 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
2958 goto out_restart;
2959 }
2960
f0c97783
LC		 2961 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
2962 true);
b08c1d97
LC		 2963 if (ret) {
2964 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
2965 goto out_restart;
2966 }
2967
2968 goto out;
2969
2970out_restart:
2971 /* things keep failing, better restart the hw */
2972 iwl_mvm_nic_restart(mvm, false);
2973
2974out:
2975 mutex_unlock(&mvm->mutex);
2976 return ret;
2977}
2978
8ca151b5
JB		 2979static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2980 struct ieee80211_sta *sta,
2981 bool set)
2982{
2983 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2984 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2985
2986 if (!mvm_sta || !mvm_sta->vif) {
2987 IWL_ERR(mvm, "Station is not associated to a vif\n");
2988 return -EINVAL;
2989 }
2990
2991 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2992}
2993
507cadf2
DS		 2994#ifdef CONFIG_NL80211_TESTMODE
2995static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2996 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2997 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
f6c6ad42 2998 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
507cadf2
DS		 2999};
3000
3001static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3002 struct ieee80211_vif *vif,
3003 void *data, int len)
3004{
3005 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3006 int err;
3007 u32 noa_duration;
3008
3009 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3010 if (err)
3011 return err;
3012
3013 if (!tb[IWL_MVM_TM_ATTR_CMD])
3014 return -EINVAL;
3015
3016 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3017 case IWL_MVM_TM_CMD_SET_NOA:
3018 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3019 !vif->bss_conf.enable_beacon ||
3020 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3021 return -EINVAL;
3022
3023 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3024 if (noa_duration >= vif->bss_conf.beacon_int)
3025 return -EINVAL;
3026
3027 mvm->noa_duration = noa_duration;
3028 mvm->noa_vif = vif;
3029
0166230c 3030 return iwl_mvm_update_quotas(mvm, NULL);
f6c6ad42
JB		 3031 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3032 /* must be associated client vif - ignore authorized */
3033 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3034 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3035 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3036 return -EINVAL;
3037
3038 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
a1022927
EG		 3039 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3040 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
507cadf2
DS		 3041 }
3042
3043 return -EOPNOTSUPP;
3044}
3045
3046static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3047 struct ieee80211_vif *vif,
3048 void *data, int len)
3049{
3050 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3051 int err;
3052
3053 mutex_lock(&mvm->mutex);
3054 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3055 mutex_unlock(&mvm->mutex);
3056
3057 return err;
3058}
3059#endif
3060
bd3398e2
AO		 3061static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
3062 struct ieee80211_vif *vif,
3063 struct cfg80211_chan_def *chandef)
3064{
3065 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
664322fa 3066 struct ieee80211_vif *csa_vif;
bd3398e2
AO		 3067
3068 mutex_lock(&mvm->mutex);
664322fa
AO		 3069
3070 csa_vif = rcu_dereference_protected(mvm->csa_vif,
3071 lockdep_is_held(&mvm->mutex));
3072 if (WARN(csa_vif && csa_vif->csa_active,
bd3398e2
AO		 3073 "Another CSA is already in progress"))
3074 goto out_unlock;
3075
3076 IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
3077 chandef->center_freq1);
664322fa 3078 rcu_assign_pointer(mvm->csa_vif, vif);
bd3398e2
AO		 3079
3080out_unlock:
3081 mutex_unlock(&mvm->mutex);
3082}
3083
c5b0e7c0
EG		 3084static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3085 struct ieee80211_vif *vif, u32 queues, bool drop)
3086{
3087 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3088 struct iwl_mvm_vif *mvmvif;
3089 struct iwl_mvm_sta *mvmsta;
3090
3091 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3092 return;
3093
3094 mutex_lock(&mvm->mutex);
3095 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3096 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
3097
480acbce
JB		 3098 if (WARN_ON_ONCE(!mvmsta)) {
3099 mutex_unlock(&mvm->mutex);
3100 return;
3101 }
c5b0e7c0
EG		 3102
3103 if (drop) {
3104 if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
3105 IWL_ERR(mvm, "flush request fail\n");
480acbce 3106 mutex_unlock(&mvm->mutex);
c5b0e7c0 3107 } else {
480acbce
JB		 3108 u32 tfd_queue_msk = mvmsta->tfd_queue_msk;
3109 mutex_unlock(&mvm->mutex);
3110
3111 /* this can take a while, and we may need/want other operations
3112 * to succeed while doing this, so do it without the mutex held
3113 */
3114 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_queue_msk);
c5b0e7c0 3115 }
c5b0e7c0
EG		 3116}
3117
e5209263 3118const struct ieee80211_ops iwl_mvm_hw_ops = {
8ca151b5
JB		 3119 .tx = iwl_mvm_mac_tx,
3120 .ampdu_action = iwl_mvm_mac_ampdu_action,
3121 .start = iwl_mvm_mac_start,
cf2c92d8 3122 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
8ca151b5
JB		 3123 .stop = iwl_mvm_mac_stop,
3124 .add_interface = iwl_mvm_mac_add_interface,
3125 .remove_interface = iwl_mvm_mac_remove_interface,
3126 .config = iwl_mvm_mac_config,
e59647ea 3127 .prepare_multicast = iwl_mvm_prepare_multicast,
8ca151b5
JB		 3128 .configure_filter = iwl_mvm_configure_filter,
3129 .bss_info_changed = iwl_mvm_bss_info_changed,
3130 .hw_scan = iwl_mvm_mac_hw_scan,
3131 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1ddbbb0c 3132 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
8ca151b5
JB		 3133 .sta_state = iwl_mvm_mac_sta_state,
3134 .sta_notify = iwl_mvm_mac_sta_notify,
3135 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3e56eadf 3136 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
8ca151b5 3137 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1f3b0ff8 3138 .sta_rc_update = iwl_mvm_sta_rc_update,
8ca151b5
JB		 3139 .conf_tx = iwl_mvm_mac_conf_tx,
3140 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
07ecd897 3141 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
c5b0e7c0 3142 .flush = iwl_mvm_mac_flush,
35a000b7
DS		 3143 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3144 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
8ca151b5
JB		 3145 .set_key = iwl_mvm_mac_set_key,
3146 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3147 .remain_on_channel = iwl_mvm_roc,
3148 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
8ca151b5
JB		 3149 .add_chanctx = iwl_mvm_add_chanctx,
3150 .remove_chanctx = iwl_mvm_remove_chanctx,
3151 .change_chanctx = iwl_mvm_change_chanctx,
3152 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3153 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
b08c1d97 3154 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
8ca151b5 3155
5023d966
JB		 3156 .start_ap = iwl_mvm_start_ap_ibss,
3157 .stop_ap = iwl_mvm_stop_ap_ibss,
3158 .join_ibss = iwl_mvm_start_ap_ibss,
3159 .leave_ibss = iwl_mvm_stop_ap_ibss,
8ca151b5
JB		 3160
3161 .set_tim = iwl_mvm_set_tim,
3162
bd3398e2
AO		 3163 .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
3164
507cadf2
DS		 3165 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3166
8ca151b5
JB		 3167#ifdef CONFIG_PM_SLEEP
3168 /* look at d3.c */
3169 .suspend = iwl_mvm_suspend,
3170 .resume = iwl_mvm_resume,
3171 .set_wakeup = iwl_mvm_set_wakeup,
3172 .set_rekey_data = iwl_mvm_set_rekey_data,
3173#if IS_ENABLED(CONFIG_IPV6)
3174 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3175#endif
3176 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3177#endif
3178};
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