]> git.ipfire.org Git - thirdparty/linux.git/blame - drivers/net/wireless/iwlwifi/mvm/mac80211.c
projects / thirdparty / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
iwlwifi: mvm: consider d0i3_disable in iwl_mvm_is_d0i3_supported()
[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"
363039be 88#include "iwl-csr.h"
8ca151b5
JB		 89
90static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
91 {
92 .max = 1,
8eb38710 93 .types = BIT(NL80211_IFTYPE_STATION),
8ca151b5 94 },
3c15a0fb
JB		 95 {
96 .max = 1,
8eb38710
IP		 97 .types = BIT(NL80211_IFTYPE_AP) |
98 BIT(NL80211_IFTYPE_P2P_CLIENT) |
3c15a0fb
JB		 99 BIT(NL80211_IFTYPE_P2P_GO),
100 },
101 {
102 .max = 1,
103 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
104 },
8ca151b5
JB		 105};
106
107static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
108 {
109 .num_different_channels = 1,
110 .max_interfaces = 3,
111 .limits = iwl_mvm_limits,
112 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
113 },
114};
115
f0c2646a
JB		 116#ifdef CONFIG_PM_SLEEP
117static const struct nl80211_wowlan_tcp_data_token_feature
118iwl_mvm_wowlan_tcp_token_feature = {
119 .min_len = 0,
120 .max_len = 255,
121 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
122};
123
124static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
125 .tok = &iwl_mvm_wowlan_tcp_token_feature,
126 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
127 sizeof(struct ethhdr) -
128 sizeof(struct iphdr) -
129 sizeof(struct tcphdr),
130 .data_interval_max = 65535, /* __le16 in API */
131 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
132 sizeof(struct ethhdr) -
133 sizeof(struct iphdr) -
134 sizeof(struct tcphdr),
135 .seq = true,
136};
137#endif
138
77736923 139#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
2ee8f021
EP		 140/*
141 * Use the reserved field to indicate magic values.
142 * these values will only be used internally by the driver,
143 * and won't make it to the fw (reserved will be 0).
144 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
145 * be the vif's ip address. in case there is not a single
146 * ip address (0, or more than 1), this attribute will
147 * be skipped.
148 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
149 * the LSB bytes of the vif's mac address
150 */
151enum {
152 BC_FILTER_MAGIC_NONE = 0,
153 BC_FILTER_MAGIC_IP,
154 BC_FILTER_MAGIC_MAC,
155};
156
77736923
EP		 157static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
158 {
159 /* arp */
160 .discard = 0,
161 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
162 .attrs = {
163 {
164 /* frame type - arp, hw type - ethernet */
165 .offset_type =
166 BCAST_FILTER_OFFSET_PAYLOAD_START,
167 .offset = sizeof(rfc1042_header),
168 .val = cpu_to_be32(0x08060001),
169 .mask = cpu_to_be32(0xffffffff),
170 },
2ee8f021
EP		 171 {
172 /* arp dest ip */
173 .offset_type =
174 BCAST_FILTER_OFFSET_PAYLOAD_START,
175 .offset = sizeof(rfc1042_header) + 2 +
176 sizeof(struct arphdr) +
177 ETH_ALEN + sizeof(__be32) +
178 ETH_ALEN,
179 .mask = cpu_to_be32(0xffffffff),
180 /* mark it as special field */
181 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
182 },
183 },
184 },
185 {
186 /* dhcp offer bcast */
187 .discard = 0,
188 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
189 .attrs = {
190 {
191 /* udp dest port - 68 (bootp client)*/
192 .offset_type = BCAST_FILTER_OFFSET_IP_END,
193 .offset = offsetof(struct udphdr, dest),
194 .val = cpu_to_be32(0x00440000),
195 .mask = cpu_to_be32(0xffff0000),
196 },
197 {
198 /* dhcp - lsb bytes of client hw address */
199 .offset_type = BCAST_FILTER_OFFSET_IP_END,
200 .offset = 38,
201 .mask = cpu_to_be32(0xffffffff),
202 /* mark it as special field */
203 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
204 },
77736923
EP		 205 },
206 },
207 /* last filter must be empty */
208 {},
209};
210#endif
211
7498cf4c
EP		 212void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
213{
7bb426ea 214 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 215 return;
216
217 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
576eeee9
EP		 218 spin_lock_bh(&mvm->refs_lock);
219 mvm->refs[ref_type]++;
220 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 221 iwl_trans_ref(mvm->trans);
222}
223
224void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
225{
7bb426ea 226 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 227 return;
228
229 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
576eeee9
EP		 230 spin_lock_bh(&mvm->refs_lock);
231 WARN_ON(!mvm->refs[ref_type]--);
232 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 233 iwl_trans_unref(mvm->trans);
234}
235
576eeee9
EP		 236static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
237 enum iwl_mvm_ref_type except_ref)
7498cf4c 238{
576eeee9 239 int i, j;
7498cf4c 240
7bb426ea 241 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 242 return;
243
576eeee9
EP		 244 spin_lock_bh(&mvm->refs_lock);
245 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
246 if (except_ref == i || !mvm->refs[i])
7498cf4c
EP		 247 continue;
248
576eeee9
EP		 249 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
250 i, mvm->refs[i]);
251 for (j = 0; j < mvm->refs[i]; j++)
252 iwl_trans_unref(mvm->trans);
253 mvm->refs[i] = 0;
7498cf4c 254 }
576eeee9 255 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 256}
257
f4cf8680
EP		 258bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
259{
260 int i;
261 bool taken = false;
262
263 if (!iwl_mvm_is_d0i3_supported(mvm))
264 return true;
265
266 spin_lock_bh(&mvm->refs_lock);
267 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
268 if (mvm->refs[i]) {
269 taken = true;
270 break;
271 }
272 }
273 spin_unlock_bh(&mvm->refs_lock);
274
275 return taken;
276}
277
576eeee9 278int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
d40fc489
GG		 279{
280 iwl_mvm_ref(mvm, ref_type);
281
282 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
283 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
284 HZ)) {
285 WARN_ON_ONCE(1);
286 iwl_mvm_unref(mvm, ref_type);
287 return -EIO;
288 }
289
290 return 0;
291}
292
fe0f2de3
IP		 293static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
294{
295 int i;
296
297 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
298 for (i = 0; i < NUM_PHY_CTX; i++) {
299 mvm->phy_ctxts[i].id = i;
300 mvm->phy_ctxts[i].ref = 0;
301 }
302}
303
8ca151b5
JB		 304int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
305{
306 struct ieee80211_hw *hw = mvm->hw;
831e85f3 307 int num_mac, ret, i;
8ca151b5
JB		 308
309 /* Tell mac80211 our characteristics */
310 hw->flags = IEEE80211_HW_SIGNAL_DBM |
311 IEEE80211_HW_SPECTRUM_MGMT |
312 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
313 IEEE80211_HW_QUEUE_CONTROL |
314 IEEE80211_HW_WANT_MONITOR_VIF |
8ca151b5
JB		 315 IEEE80211_HW_SUPPORTS_PS |
316 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
d2931bbd 317 IEEE80211_HW_AMPDU_AGGREGATION |
d64048ed 318 IEEE80211_HW_TIMING_BEACON_ONLY |
147fc9be 319 IEEE80211_HW_CONNECTION_MONITOR |
b71d9c8a
IY		 320 IEEE80211_HW_CHANCTX_STA_CSA |
321 IEEE80211_HW_SUPPORTS_CLONED_SKBS;
8ca151b5 322
19e737c9 323 hw->queues = mvm->first_agg_queue;
398e8c6c 324 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
7b1dd048
EG		 325 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
326 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
339b3086
ES		 327 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
328 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
8ca151b5
JB		 329 hw->rate_control_algorithm = "iwl-mvm-rs";
330
331 /*
332 * Enable 11w if advertised by firmware and software crypto
333 * is not enabled (as the firmware will interpret some mgmt
334 * packets, so enabling it with software crypto isn't safe)
335 */
336 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
337 !iwlwifi_mod_params.sw_crypto)
338 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
339
1504f48d 340 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
1504f48d
MC		 341 !iwlwifi_mod_params.uapsd_disable) {
342 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
4cb832d5 343 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
1504f48d
MC		 344 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
345 }
e8e626ad 346
d2496221 347 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN ||
effd05ac 348 mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
fb98be5e 349 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
effd05ac
JB		 350 hw->wiphy->features |=
351 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
352 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
353 }
fb98be5e 354
8ca151b5
JB		 355 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
356 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
fe0f2de3 357 hw->chanctx_data_size = sizeof(u16);
8ca151b5
JB		 358
359 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3c15a0fb
JB		 360 BIT(NL80211_IFTYPE_P2P_CLIENT) |
361 BIT(NL80211_IFTYPE_AP) |
362 BIT(NL80211_IFTYPE_P2P_GO) |
c13b1725
EG		 363 BIT(NL80211_IFTYPE_P2P_DEVICE) |
364 BIT(NL80211_IFTYPE_ADHOC);
5023d966 365
a2f73b6c
LR		 366 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
367 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
368 REGULATORY_DISABLE_BEACON_HINTS;
8ca151b5 369
3e56eadf
JB		 370 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
371 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
372
94bbed72 373 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
bd3398e2 374
8ca151b5
JB		 375 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
376 hw->wiphy->n_iface_combinations =
377 ARRAY_SIZE(iwl_mvm_iface_combinations);
378
c451e6d4 379 hw->wiphy->max_remain_on_channel_duration = 10000;
8ca151b5 380 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
f1a68542
EG		 381 /* we can compensate an offset of up to 3 channels = 15 MHz */
382 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
8ca151b5
JB		 383
384 /* Extract MAC address */
385 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
386 hw->wiphy->addresses = mvm->addresses;
387 hw->wiphy->n_addresses = 1;
831e85f3
IP		 388
389 /* Extract additional MAC addresses if available */
390 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
391 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
392
393 for (i = 1; i < num_mac; i++) {
394 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
8ca151b5 395 ETH_ALEN);
831e85f3 396 mvm->addresses[i].addr[5]++;
8ca151b5
JB		 397 hw->wiphy->n_addresses++;
398 }
399
fe0f2de3
IP		 400 iwl_mvm_reset_phy_ctxts(mvm);
401
48849a41 402 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
20f1a5de 403
8ca151b5
JB		 404 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
405
406 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
407 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
408 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
409 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
410 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
411 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
412
413 hw->wiphy->hw_version = mvm->trans->hw_id;
414
ade50652 415 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
8ca151b5
JB		 416 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
417 else
418 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
419
6efaaf33
EG		 420 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
421 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
422 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
423 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
424 /* we create the 802.11 header and zero length SSID IE. */
425 hw->wiphy->max_sched_scan_ie_len =
426 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
427 }
35a000b7 428
8ca151b5 429 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
ab480030 430 NL80211_FEATURE_LOW_PRIORITY_SCAN |
0d8614b4
EP		 431 NL80211_FEATURE_P2P_GO_OPPPS |
432 NL80211_FEATURE_DYNAMIC_SMPS |
9b5452fd
EG		 433 NL80211_FEATURE_STATIC_SMPS |
434 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
8ca151b5 435
f1daa00e
AO		 436 if (mvm->fw->ucode_capa.capa[0] &
437 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
438 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
226bcd48
AK		 439 if (mvm->fw->ucode_capa.capa[0] &
440 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
441 hw->wiphy->features |= NL80211_FEATURE_QUIET;
f1daa00e 442
73897bd1
AO		 443 if (mvm->fw->ucode_capa.capa[0] &
444 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
445 hw->wiphy->features |=
446 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
447
448 if (mvm->fw->ucode_capa.capa[0] &
449 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
450 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
451
8ca151b5
JB		 452 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
453
e36e5433 454 /* currently FW API supports only one optional cipher scheme */
9ddca860 455 if (mvm->fw->cs[0].cipher) {
e36e5433 456 mvm->hw->n_cipher_schemes = 1;
9ddca860 457 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
e36e5433
MS		 458 }
459
8ca151b5 460#ifdef CONFIG_PM_SLEEP
d15a747f
EP		 461 if (iwl_mvm_is_d0i3_supported(mvm) &&
462 device_can_wakeup(mvm->trans->dev)) {
463 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
464 hw->wiphy->wowlan = &mvm->wowlan;
91742449
EP		 465 }
466
467 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
8ca151b5
JB		 468 mvm->trans->ops->d3_suspend &&
469 mvm->trans->ops->d3_resume &&
470 device_can_wakeup(mvm->trans->dev)) {
91742449
EP		 471 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
472 WIPHY_WOWLAN_DISCONNECT |
473 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
474 WIPHY_WOWLAN_RFKILL_RELEASE |
475 WIPHY_WOWLAN_NET_DETECT;
8ca151b5 476 if (!iwlwifi_mod_params.sw_crypto)
964dc9e2
JB		 477 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
478 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
479 WIPHY_WOWLAN_4WAY_HANDSHAKE;
480
481 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
482 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
483 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
c55385f5 484 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
964dc9e2
JB		 485 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
486 hw->wiphy->wowlan = &mvm->wowlan;
8ca151b5
JB		 487 }
488#endif
489
77736923
EP		 490#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
491 /* assign default bcast filtering configuration */
492 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
493#endif
494
8ca151b5
JB		 495 ret = iwl_mvm_leds_init(mvm);
496 if (ret)
497 return ret;
498
d8f1c515
AN		 499 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
500 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
501 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
502 }
503
1d3c3f63
AN		 504 if (mvm->fw->ucode_capa.capa[0] &
505 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
506 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
507 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
508 }
509
b7327d89
EG		 510 ret = ieee80211_register_hw(mvm->hw);
511 if (ret)
512 iwl_mvm_leds_exit(mvm);
513
514 return ret;
8ca151b5
JB		 515}
516
b2492501
AN		 517static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
518 struct ieee80211_sta *sta,
519 struct sk_buff *skb)
520{
521 struct iwl_mvm_sta *mvmsta;
522 bool defer = false;
523
524 /*
525 * double check the IN_D0I3 flag both before and after
526 * taking the spinlock, in order to prevent taking
527 * the spinlock when not needed.
528 */
529 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
530 return false;
531
532 spin_lock(&mvm->d0i3_tx_lock);
533 /*
534 * testing the flag again ensures the skb dequeue
535 * loop (on d0i3 exit) hasn't run yet.
536 */
537 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
538 goto out;
539
540 mvmsta = iwl_mvm_sta_from_mac80211(sta);
541 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
542 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
543 goto out;
544
545 __skb_queue_tail(&mvm->d0i3_tx, skb);
546 ieee80211_stop_queues(mvm->hw);
547
548 /* trigger wakeup */
549 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
550 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
551
552 defer = true;
553out:
554 spin_unlock(&mvm->d0i3_tx_lock);
555 return defer;
556}
557
8ca151b5
JB		 558static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
559 struct ieee80211_tx_control *control,
560 struct sk_buff *skb)
561{
562 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3e56eadf
JB		 563 struct ieee80211_sta *sta = control->sta;
564 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
565 struct ieee80211_hdr *hdr = (void *)skb->data;
8ca151b5 566
9ee718aa
EL		 567 if (iwl_mvm_is_radio_killed(mvm)) {
568 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
8ca151b5
JB		 569 goto drop;
570 }
571
398e8c6c 572 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
a6cc5163
MG		 573 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
574 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
8ca151b5
JB		 575 goto drop;
576
3e56eadf
JB		 577 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
578 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
579 ieee80211_is_mgmt(hdr->frame_control) &&
580 !ieee80211_is_deauth(hdr->frame_control) &&
581 !ieee80211_is_disassoc(hdr->frame_control) &&
582 !ieee80211_is_action(hdr->frame_control)))
583 sta = NULL;
584
585 if (sta) {
b2492501
AN		 586 if (iwl_mvm_defer_tx(mvm, sta, skb))
587 return;
3e56eadf 588 if (iwl_mvm_tx_skb(mvm, skb, sta))
8ca151b5
JB		 589 goto drop;
590 return;
591 }
592
593 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
594 goto drop;
595 return;
596 drop:
597 ieee80211_free_txskb(hw, skb);
598}
599
205e2210
EG		 600static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
601{
602 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
603 return false;
604 return true;
605}
606
607static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
608{
609 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
610 return false;
611 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
612 return true;
613
614 /* enabled by default */
615 return true;
616}
617
8ca151b5
JB		 618static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
619 struct ieee80211_vif *vif,
620 enum ieee80211_ampdu_mlme_action action,
621 struct ieee80211_sta *sta, u16 tid,
622 u16 *ssn, u8 buf_size)
623{
624 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
625 int ret;
b2492501 626 bool tx_agg_ref = false;
8ca151b5
JB		 627
628 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
629 sta->addr, tid, action);
630
631 if (!(mvm->nvm_data->sku_cap_11n_enable))
632 return -EACCES;
633
b2492501 634 /* return from D0i3 before starting a new Tx aggregation */
9256c205
EP		 635 switch (action) {
636 case IEEE80211_AMPDU_TX_START:
637 case IEEE80211_AMPDU_TX_STOP_CONT:
638 case IEEE80211_AMPDU_TX_STOP_FLUSH:
639 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
640 case IEEE80211_AMPDU_TX_OPERATIONAL:
b2492501 641 /*
9256c205
EP		 642 * for tx start, wait synchronously until D0i3 exit to
643 * get the correct sequence number for the tid.
644 * additionally, some other ampdu actions use direct
645 * target access, which is not handled automatically
646 * by the trans layer (unlike commands), so wait for
647 * d0i3 exit in these cases as well.
b2492501 648 */
d40fc489
GG		 649 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
650 if (ret)
651 return ret;
652
653 tx_agg_ref = true;
9256c205
EP		 654 break;
655 default:
656 break;
b2492501
AN		 657 }
658
8ca151b5
JB		 659 mutex_lock(&mvm->mutex);
660
661 switch (action) {
662 case IEEE80211_AMPDU_RX_START:
205e2210 663 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
8ca151b5
JB		 664 ret = -EINVAL;
665 break;
666 }
667 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
668 break;
669 case IEEE80211_AMPDU_RX_STOP:
670 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
671 break;
672 case IEEE80211_AMPDU_TX_START:
205e2210 673 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
5d158efa
EG		 674 ret = -EINVAL;
675 break;
676 }
8ca151b5
JB		 677 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
678 break;
679 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 680 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
681 break;
8ca151b5
JB		 682 case IEEE80211_AMPDU_TX_STOP_FLUSH:
683 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 684 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 685 break;
686 case IEEE80211_AMPDU_TX_OPERATIONAL:
687 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
688 break;
689 default:
690 WARN_ON_ONCE(1);
691 ret = -EINVAL;
692 break;
693 }
694 mutex_unlock(&mvm->mutex);
695
b2492501
AN		 696 /*
697 * If the tid is marked as started, we won't use it for offloaded
698 * traffic on the next D0i3 entry. It's safe to unref.
699 */
700 if (tx_agg_ref)
701 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
702
8ca151b5
JB		 703 return ret;
704}
705
706static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
707 struct ieee80211_vif *vif)
708{
709 struct iwl_mvm *mvm = data;
710 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
711
712 mvmvif->uploaded = false;
713 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
714
715 /* does this make sense at all? */
716 mvmvif->color++;
717
718 spin_lock_bh(&mvm->time_event_lock);
719 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
720 spin_unlock_bh(&mvm->time_event_lock);
721
fe0f2de3 722 mvmvif->phy_ctxt = NULL;
8a275bad 723 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
8ca151b5
JB		 724}
725
aadede6e
JB		 726static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
727 const void *data, size_t datalen)
728{
729 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
730 ssize_t bytes_read;
731 ssize_t bytes_read_trans;
732
733 if (offset < dump_ptrs->op_mode_len) {
734 bytes_read = min_t(ssize_t, count,
735 dump_ptrs->op_mode_len - offset);
736 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
737 bytes_read);
738 offset += bytes_read;
739 count -= bytes_read;
740
741 if (count == 0)
742 return bytes_read;
743 } else {
744 bytes_read = 0;
745 }
746
747 if (!dump_ptrs->trans_ptr)
748 return bytes_read;
749
750 offset -= dump_ptrs->op_mode_len;
751 bytes_read_trans = min_t(ssize_t, count,
752 dump_ptrs->trans_ptr->len - offset);
753 memcpy(buffer + bytes_read,
754 (u8 *)dump_ptrs->trans_ptr->data + offset,
755 bytes_read_trans);
756
757 return bytes_read + bytes_read_trans;
758}
759
760static void iwl_mvm_free_coredump(const void *data)
761{
762 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
763
764 vfree(fw_error_dump->op_mode_ptr);
765 vfree(fw_error_dump->trans_ptr);
766 kfree(fw_error_dump);
767}
768
4bfa47f3 769void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
655e6d6d
EG		 770{
771 struct iwl_fw_error_dump_file *dump_file;
772 struct iwl_fw_error_dump_data *dump_data;
773 struct iwl_fw_error_dump_info *dump_info;
a549b296 774 struct iwl_fw_error_dump_mem *dump_mem;
48eb7b34 775 struct iwl_mvm_dump_ptrs *fw_error_dump;
655e6d6d
EG		 776 u32 sram_len, sram_ofs;
777 u32 file_len, rxf_len;
778 unsigned long flags;
655e6d6d 779 int reg_val;
addfaada 780 u32 smem_len = mvm->cfg->smem_len;
655e6d6d
EG		 781
782 lockdep_assert_held(&mvm->mutex);
783
addfaada
LK		 784 /* W/A for 8000 HW family A-step */
785 if (mvm->cfg->smem_len &&
786 mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
787 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_A_STEP)
788 smem_len = 0x38000;
789
aadede6e 790 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
48eb7b34
EG		 791 if (!fw_error_dump)
792 return;
793
f53bf4c7
LK		 794 /* SRAM - include stack CCM if driver knows the values for it */
795 if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
796 const struct fw_img *img;
797
798 img = &mvm->fw->img[mvm->cur_ucode];
799 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
800 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
801 } else {
802 sram_ofs = mvm->cfg->dccm_offset;
803 sram_len = mvm->cfg->dccm_len;
804 }
655e6d6d
EG		 805
806 /* reading buffer size */
807 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
808 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
809
810 /* the register holds the value divided by 128 */
811 rxf_len = rxf_len << 7;
812
813 file_len = sizeof(*dump_file) +
814 sizeof(*dump_data) * 3 +
a549b296 815 sram_len + sizeof(*dump_mem) +
655e6d6d
EG		 816 rxf_len +
817 sizeof(*dump_info);
818
addfaada
LK		 819 /* Make room for the SMEM, if it exists */
820 if (smem_len)
a549b296 821 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
addfaada 822
5bfe6f53 823 dump_file = vzalloc(file_len);
48eb7b34
EG		 824 if (!dump_file) {
825 kfree(fw_error_dump);
655e6d6d 826 return;
48eb7b34 827 }
655e6d6d 828
48eb7b34 829 fw_error_dump->op_mode_ptr = dump_file;
655e6d6d
EG		 830
831 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
655e6d6d
EG		 832 dump_data = (void *)dump_file->data;
833
834 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
835 dump_data->len = cpu_to_le32(sizeof(*dump_info));
836 dump_info = (void *) dump_data->data;
837 dump_info->device_family =
838 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
839 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
840 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
435da2ce 841 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
655e6d6d
EG		 842 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
843 sizeof(dump_info->fw_human_readable));
844 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
845 sizeof(dump_info->dev_human_readable));
846 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
847 sizeof(dump_info->bus_human_readable));
848
849 dump_data = iwl_fw_error_next_data(dump_data);
850 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
851 dump_data->len = cpu_to_le32(rxf_len);
852
853 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
854 u32 *rxf = (void *)dump_data->data;
855 int i;
856
857 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
858 iwl_trans_write_prph(mvm->trans,
859 RXF_LD_FENCE_OFFSET_ADDR,
860 i * sizeof(u32));
861 rxf[i] = iwl_trans_read_prph(mvm->trans,
862 RXF_FIFO_RD_FENCE_ADDR);
863 }
864 iwl_trans_release_nic_access(mvm->trans, &flags);
865 }
866
867 dump_data = iwl_fw_error_next_data(dump_data);
a549b296
EG		 868 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
869 dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
870 dump_mem = (void *)dump_data->data;
871 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
872 dump_mem->offset = cpu_to_le32(sram_ofs);
873 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
655e6d6d
EG		 874 sram_len);
875
addfaada
LK		 876 if (smem_len) {
877 dump_data = iwl_fw_error_next_data(dump_data);
e06d8437
EG		 878 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
879 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
880 dump_mem = (void *)dump_data->data;
881 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
882 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
addfaada 883 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
e06d8437 884 dump_mem->data, smem_len);
addfaada
LK		 885 }
886
48eb7b34
EG		 887 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
888 fw_error_dump->op_mode_len = file_len;
889 if (fw_error_dump->trans_ptr)
890 file_len += fw_error_dump->trans_ptr->len;
891 dump_file->file_len = cpu_to_le32(file_len);
4bfa47f3 892
aadede6e
JB		 893 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
894 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
655e6d6d 895}
655e6d6d 896
8ca151b5
JB		 897static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
898{
58629d9d
JB		 899 /* clear the D3 reconfig, we only need it to avoid dumping a
900 * firmware coredump on reconfiguration, we shouldn't do that
901 * on D3->D0 transition
902 */
903 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status))
904 iwl_mvm_fw_error_dump(mvm);
1bd3cbc1 905
8ca151b5 906 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 907
908 mvm->scan_status = IWL_MVM_SCAN_NONE;
b1873300 909 mvm->ps_disabled = false;
31b8b343 910 mvm->calibrating = false;
8ca151b5
JB		 911
912 /* just in case one was running */
913 ieee80211_remain_on_channel_expired(mvm->hw);
914
915 ieee80211_iterate_active_interfaces_atomic(
916 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
917 iwl_mvm_cleanup_iterator, mvm);
918
fe0f2de3 919 mvm->p2p_device_vif = NULL;
37577fe2 920 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
fe0f2de3
IP		 921
922 iwl_mvm_reset_phy_ctxts(mvm);
8ca151b5
JB		 923 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
924 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
a0f6bf2a 925 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
8a275bad
EG		 926 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
927 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
928 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
929 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
930 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
931 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
8ca151b5
JB		 932
933 ieee80211_wake_queues(mvm->hw);
934
7498cf4c
EP		 935 /* cleanup all stale references (scan, roc), but keep the
936 * ucode_down ref until reconfig is complete */
937 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
938
228670b2
EP		 939 /* clear any stale d0i3 state */
940 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
941
8ca151b5 942 mvm->vif_count = 0;
113a0447 943 mvm->rx_ba_sessions = 0;
8ca151b5
JB		 944}
945
a0a09243 946int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
8ca151b5 947{
8ca151b5
JB		 948 int ret;
949
a0a09243 950 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 951
952 /* Clean up some internal and mac80211 state on restart */
953 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
954 iwl_mvm_restart_cleanup(mvm);
955
956 ret = iwl_mvm_up(mvm);
c47af22a
JB		 957
958 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
959 /* Something went wrong - we need to finish some cleanup
960 * that normally iwl_mvm_mac_restart_complete() below
961 * would do.
962 */
963 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
964 iwl_mvm_d0i3_enable_tx(mvm, NULL);
965 }
966
a0a09243
LC		 967 return ret;
968}
969
970static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
971{
972 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
973 int ret;
974
975 mutex_lock(&mvm->mutex);
976 ret = __iwl_mvm_mac_start(mvm);
8ca151b5
JB		 977 mutex_unlock(&mvm->mutex);
978
979 return ret;
980}
981
cf2c92d8 982static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
8ca151b5 983{
8ca151b5
JB		 984 int ret;
985
986 mutex_lock(&mvm->mutex);
987
988 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
b2492501 989 iwl_mvm_d0i3_enable_tx(mvm, NULL);
0166230c 990 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 991 if (ret)
992 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
993 ret);
994
7498cf4c
EP		 995 /* allow transport/FW low power modes */
996 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
997
cbd2ae2d
AN		 998 /*
999 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1000 * of packets the FW sent out, so we must reconnect.
1001 */
1002 iwl_mvm_teardown_tdls_peers(mvm);
1003
8ca151b5
JB		 1004 mutex_unlock(&mvm->mutex);
1005}
1006
088070a2
EP		 1007static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1008{
1009 bool exit_now;
1010
1011 if (!iwl_mvm_is_d0i3_supported(mvm))
1012 return;
1013
1014 mutex_lock(&mvm->d0i3_suspend_mutex);
1015 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1016 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1017 &mvm->d0i3_suspend_flags);
1018 mutex_unlock(&mvm->d0i3_suspend_mutex);
1019
1020 if (exit_now) {
1021 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1022 _iwl_mvm_exit_d0i3(mvm);
1023 }
6735943f
EP		 1024
1025 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1026 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1027 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1028 &mvm->status),
1029 HZ))
1030 WARN_ONCE(1, "D0i3 exit on resume timed out\n");
088070a2
EP		 1031}
1032
cf2c92d8
EP		 1033static void
1034iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1035 enum ieee80211_reconfig_type reconfig_type)
1036{
1037 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1038
1039 switch (reconfig_type) {
1040 case IEEE80211_RECONFIG_TYPE_RESTART:
1041 iwl_mvm_restart_complete(mvm);
1042 break;
1043 case IEEE80211_RECONFIG_TYPE_SUSPEND:
088070a2 1044 iwl_mvm_resume_complete(mvm);
cf2c92d8
EP		 1045 break;
1046 }
1047}
1048
a0a09243 1049void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
8ca151b5 1050{
a0a09243 1051 lockdep_assert_held(&mvm->mutex);
7498cf4c
EP		 1052
1053 /* disallow low power states when the FW is down */
1054 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1055
8ca151b5
JB		 1056 /* async_handlers_wk is now blocked */
1057
1058 /*
1059 * The work item could be running or queued if the
1060 * ROC time event stops just as we get here.
1061 */
1062 cancel_work_sync(&mvm->roc_done_wk);
1063
1064 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 1065
1066 iwl_mvm_async_handlers_purge(mvm);
1067 /* async_handlers_list is empty and will stay empty: HW is stopped */
1068
1069 /* the fw is stopped, the aux sta is dead: clean up driver state */
712b24ad 1070 iwl_mvm_del_aux_sta(mvm);
8ca151b5 1071
bc44886d 1072 mvm->ucode_loaded = false;
a0a09243 1073}
bc44886d 1074
a0a09243
LC		 1075static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1076{
1077 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1078
1079 flush_work(&mvm->d0i3_exit_work);
1080 flush_work(&mvm->async_handlers_wk);
4bfa47f3 1081 flush_work(&mvm->fw_error_dump_wk);
a0a09243
LC		 1082
1083 mutex_lock(&mvm->mutex);
1084 __iwl_mvm_mac_stop(mvm);
8ca151b5
JB		 1085 mutex_unlock(&mvm->mutex);
1086
1087 /*
1088 * The worker might have been waiting for the mutex, let it run and
1089 * discover that its list is now empty.
1090 */
1091 cancel_work_sync(&mvm->async_handlers_wk);
1092}
1093
fe0f2de3
IP		 1094static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1095{
1096 u16 i;
1097
1098 lockdep_assert_held(&mvm->mutex);
1099
1100 for (i = 0; i < NUM_PHY_CTX; i++)
1101 if (!mvm->phy_ctxts[i].ref)
1102 return &mvm->phy_ctxts[i];
1103
1104 IWL_ERR(mvm, "No available PHY context\n");
1105 return NULL;
1106}
1107
ee9c6cb0
EG		 1108static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1109 s8 tx_power)
1110{
1111 /* FW is in charge of regulatory enforcement */
1112 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1113 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1114 .pwr_restriction = cpu_to_le16(tx_power),
1115 };
1116
a1022927 1117 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
ee9c6cb0
EG		 1118 sizeof(reduce_txpwr_cmd),
1119 &reduce_txpwr_cmd);
1120}
1121
8ca151b5
JB		 1122static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1123 struct ieee80211_vif *vif)
1124{
1125 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1126 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1127 int ret;
1128
d40fc489
GG		 1129 /*
1130 * make sure D0i3 exit is completed, otherwise a target access
1131 * during tx queue configuration could be done when still in
1132 * D0i3 state.
1133 */
1134 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1135 if (ret)
1136 return ret;
1137
8ca151b5
JB		 1138 /*
1139 * Not much to do here. The stack will not allow interface
1140 * types or combinations that we didn't advertise, so we
1141 * don't really have to check the types.
1142 */
1143
1144 mutex_lock(&mvm->mutex);
1145
e89044d7 1146 /* Allocate resources for the MAC context, and add it to the fw */
8ca151b5
JB		 1147 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1148 if (ret)
1149 goto out_unlock;
1150
1c2abf72 1151 /* Counting number of interfaces is needed for legacy PM */
ea183d02
IP		 1152 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1153 mvm->vif_count++;
ea183d02 1154
8ca151b5
JB		 1155 /*
1156 * The AP binding flow can be done only after the beacon
1157 * template is configured (which happens only in the mac80211
1158 * start_ap() flow), and adding the broadcast station can happen
1159 * only after the binding.
1160 * In addition, since modifying the MAC before adding a bcast
1161 * station is not allowed by the FW, delay the adding of MAC context to
1162 * the point where we can also add the bcast station.
1163 * In short: there's not much we can do at this point, other than
1164 * allocating resources :)
1165 */
5023d966
JB		 1166 if (vif->type == NL80211_IFTYPE_AP ||
1167 vif->type == NL80211_IFTYPE_ADHOC) {
013290aa 1168 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1169 if (ret) {
1170 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1171 goto out_release;
1172 }
1173
77740cb4 1174 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1175 goto out_unlock;
1176 }
1177
8ca151b5
JB		 1178 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1179 if (ret)
1180 goto out_release;
1181
999609f1 1182 ret = iwl_mvm_power_update_mac(mvm);
e5e7aa8e
EG		 1183 if (ret)
1184 goto out_release;
8ca151b5 1185
7df15b1e 1186 /* beacon filtering */
a1022927 1187 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
bd3351ba
EP		 1188 if (ret)
1189 goto out_remove_mac;
1190
7df15b1e 1191 if (!mvm->bf_allowed_vif &&
73e5f2c5 1192 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
7df15b1e 1193 mvm->bf_allowed_vif = mvmvif;
a20fd398
AO		 1194 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1195 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
7df15b1e
HG		 1196 }
1197
8ca151b5
JB		 1198 /*
1199 * P2P_DEVICE interface does not have a channel context assigned to it,
1200 * so a dedicated PHY context is allocated to it and the corresponding
1201 * MAC context is bound to it at this stage.
1202 */
1203 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 1204
fe0f2de3
IP		 1205 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1206 if (!mvmvif->phy_ctxt) {
1207 ret = -ENOSPC;
bd3351ba 1208 goto out_free_bf;
fe0f2de3 1209 }
8ca151b5 1210
53a9d61e 1211 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1212 ret = iwl_mvm_binding_add_vif(mvm, vif);
1213 if (ret)
53a9d61e 1214 goto out_unref_phy;
8ca151b5 1215
013290aa 1216 ret = iwl_mvm_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1217 if (ret)
1218 goto out_unbind;
1219
1220 /* Save a pointer to p2p device vif, so it can later be used to
1221 * update the p2p device MAC when a GO is started/stopped */
1222 mvm->p2p_device_vif = vif;
1223 }
1224
63494374 1225 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1226 goto out_unlock;
1227
1228 out_unbind:
1229 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 1230 out_unref_phy:
fe0f2de3 1231 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
bd3351ba
EP		 1232 out_free_bf:
1233 if (mvm->bf_allowed_vif == mvmvif) {
1234 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1235 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1236 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
bd3351ba 1237 }
8ca151b5
JB		 1238 out_remove_mac:
1239 mvmvif->phy_ctxt = NULL;
1240 iwl_mvm_mac_ctxt_remove(mvm, vif);
1241 out_release:
5ee2b215
AB		 1242 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1243 mvm->vif_count--;
1c2abf72 1244
8ca151b5
JB		 1245 iwl_mvm_mac_ctxt_release(mvm, vif);
1246 out_unlock:
1247 mutex_unlock(&mvm->mutex);
1248
d40fc489
GG		 1249 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1250
8ca151b5
JB		 1251 return ret;
1252}
1253
38a12b5b
JB		 1254static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1255 struct ieee80211_vif *vif)
8ca151b5 1256{
d92b732e 1257 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
8ca151b5
JB		 1258
1259 if (tfd_msk) {
1260 mutex_lock(&mvm->mutex);
1261 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1262 mutex_unlock(&mvm->mutex);
1263 }
1264
1265 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1266 /*
1267 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1268 * We assume here that all the packets sent to the OFFCHANNEL
1269 * queue are sent in ROC session.
1270 */
1271 flush_work(&mvm->roc_done_wk);
1272 } else {
1273 /*
1274 * By now, all the AC queues are empty. The AGG queues are
1275 * empty too. We already got all the Tx responses for all the
1276 * packets in the queues. The drain work can have been
0742a75a 1277 * triggered. Flush it.
8ca151b5
JB		 1278 */
1279 flush_work(&mvm->sta_drained_wk);
1280 }
38a12b5b
JB		 1281}
1282
1283static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1284 struct ieee80211_vif *vif)
1285{
1286 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1287 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1288
1289 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 1290
1291 mutex_lock(&mvm->mutex);
1292
7df15b1e
HG		 1293 if (mvm->bf_allowed_vif == mvmvif) {
1294 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1295 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1296 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
7df15b1e
HG		 1297 }
1298
63494374
JB		 1299 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1300
8ca151b5
JB		 1301 /*
1302 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 1303 * interface is be handled as part of the stop_ap flow.
8ca151b5 1304 */
5023d966
JB		 1305 if (vif->type == NL80211_IFTYPE_AP ||
1306 vif->type == NL80211_IFTYPE_ADHOC) {
507cadf2
DS		 1307#ifdef CONFIG_NL80211_TESTMODE
1308 if (vif == mvm->noa_vif) {
1309 mvm->noa_vif = NULL;
1310 mvm->noa_duration = 0;
1311 }
1312#endif
013290aa 1313 iwl_mvm_dealloc_bcast_sta(mvm, vif);
8ca151b5
JB		 1314 goto out_release;
1315 }
1316
1317 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1318 mvm->p2p_device_vif = NULL;
013290aa 1319 iwl_mvm_rm_bcast_sta(mvm, vif);
8ca151b5 1320 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 1321 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1322 mvmvif->phy_ctxt = NULL;
1323 }
1324
5ee2b215 1325 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5 1326 mvm->vif_count--;
1c2abf72 1327
999609f1 1328 iwl_mvm_power_update_mac(mvm);
8ca151b5
JB		 1329 iwl_mvm_mac_ctxt_remove(mvm, vif);
1330
1331out_release:
1332 iwl_mvm_mac_ctxt_release(mvm, vif);
1333 mutex_unlock(&mvm->mutex);
1334}
1335
1336static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
88f2fd73 1337{
8ca151b5
JB		 1338 return 0;
1339}
1340
e59647ea
EP		 1341struct iwl_mvm_mc_iter_data {
1342 struct iwl_mvm *mvm;
1343 int port_id;
1344};
1345
1346static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1347 struct ieee80211_vif *vif)
1348{
1349 struct iwl_mvm_mc_iter_data *data = _data;
1350 struct iwl_mvm *mvm = data->mvm;
1351 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1352 int ret, len;
1353
1354 /* if we don't have free ports, mcast frames will be dropped */
1355 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1356 return;
1357
1358 if (vif->type != NL80211_IFTYPE_STATION ||
1359 !vif->bss_conf.assoc)
1360 return;
1361
1362 cmd->port_id = data->port_id++;
1363 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1364 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1365
1c4abec0 1366 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
e59647ea
EP		 1367 if (ret)
1368 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1369}
1370
1371static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1372{
1373 struct iwl_mvm_mc_iter_data iter_data = {
1374 .mvm = mvm,
88f2fd73
MG		 1375 };
1376
e59647ea
EP		 1377 lockdep_assert_held(&mvm->mutex);
1378
1379 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1380 return;
1381
1c4abec0 1382 ieee80211_iterate_active_interfaces_atomic(
e59647ea
EP		 1383 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1384 iwl_mvm_mc_iface_iterator, &iter_data);
88f2fd73
MG		 1385}
1386
e59647ea
EP		 1387static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1388 struct netdev_hw_addr_list *mc_list)
8ca151b5 1389{
e59647ea
EP		 1390 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1391 struct iwl_mcast_filter_cmd *cmd;
1392 struct netdev_hw_addr *addr;
f3bd58f4
MS		 1393 int addr_count;
1394 bool pass_all;
e59647ea
EP		 1395 int len;
1396
f3bd58f4
MS		 1397 addr_count = netdev_hw_addr_list_count(mc_list);
1398 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1399 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1400 if (pass_all)
e59647ea 1401 addr_count = 0;
e59647ea
EP		 1402
1403 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1404 cmd = kzalloc(len, GFP_ATOMIC);
1405 if (!cmd)
1406 return 0;
1407
1408 if (pass_all) {
1409 cmd->pass_all = 1;
1410 return (u64)(unsigned long)cmd;
1411 }
1412
1413 netdev_hw_addr_list_for_each(addr, mc_list) {
1414 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1415 cmd->count, addr->addr);
1416 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1417 addr->addr, ETH_ALEN);
1418 cmd->count++;
1419 }
1420
1421 return (u64)(unsigned long)cmd;
8ca151b5
JB		 1422}
1423
1424static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1425 unsigned int changed_flags,
1426 unsigned int *total_flags,
1427 u64 multicast)
1428{
e59647ea
EP		 1429 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1430 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
8ca151b5 1431
e59647ea 1432 mutex_lock(&mvm->mutex);
51b6b9e0 1433
e59647ea
EP		 1434 /* replace previous configuration */
1435 kfree(mvm->mcast_filter_cmd);
1436 mvm->mcast_filter_cmd = cmd;
51b6b9e0 1437
e59647ea
EP		 1438 if (!cmd)
1439 goto out;
51b6b9e0 1440
e59647ea
EP		 1441 iwl_mvm_recalc_multicast(mvm);
1442out:
1443 mutex_unlock(&mvm->mutex);
1444 *total_flags = 0;
51b6b9e0
EG		 1445}
1446
c87163b9
EP		 1447#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1448struct iwl_bcast_iter_data {
1449 struct iwl_mvm *mvm;
1450 struct iwl_bcast_filter_cmd *cmd;
1451 u8 current_filter;
1452};
1453
1454static void
1455iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1456 const struct iwl_fw_bcast_filter *in_filter,
1457 struct iwl_fw_bcast_filter *out_filter)
1458{
1459 struct iwl_fw_bcast_filter_attr *attr;
1460 int i;
1461
1462 memcpy(out_filter, in_filter, sizeof(*out_filter));
1463
1464 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1465 attr = &out_filter->attrs[i];
1466
1467 if (!attr->mask)
1468 break;
1469
2ee8f021
EP		 1470 switch (attr->reserved1) {
1471 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1472 if (vif->bss_conf.arp_addr_cnt != 1) {
1473 attr->mask = 0;
1474 continue;
1475 }
1476
1477 attr->val = vif->bss_conf.arp_addr_list[0];
1478 break;
1479 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1480 attr->val = *(__be32 *)&vif->addr[2];
1481 break;
1482 default:
1483 break;
1484 }
1485 attr->reserved1 = 0;
c87163b9
EP		 1486 out_filter->num_attrs++;
1487 }
1488}
1489
1490static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1491 struct ieee80211_vif *vif)
1492{
1493 struct iwl_bcast_iter_data *data = _data;
1494 struct iwl_mvm *mvm = data->mvm;
1495 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1496 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1497 struct iwl_fw_bcast_mac *bcast_mac;
1498 int i;
1499
1500 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1501 return;
1502
1503 bcast_mac = &cmd->macs[mvmvif->id];
1504
e48393e8
IP		 1505 /*
1506 * enable filtering only for associated stations, but not for P2P
1507 * Clients
1508 */
1509 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1510 !vif->bss_conf.assoc)
c87163b9
EP		 1511 return;
1512
1513 bcast_mac->default_discard = 1;
1514
1515 /* copy all configured filters */
1516 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1517 /*
1518 * Make sure we don't exceed our filters limit.
1519 * if there is still a valid filter to be configured,
1520 * be on the safe side and just allow bcast for this mac.
1521 */
1522 if (WARN_ON_ONCE(data->current_filter >=
1523 ARRAY_SIZE(cmd->filters))) {
1524 bcast_mac->default_discard = 0;
1525 bcast_mac->attached_filters = 0;
1526 break;
1527 }
1528
1529 iwl_mvm_set_bcast_filter(vif,
1530 &mvm->bcast_filters[i],
1531 &cmd->filters[data->current_filter]);
1532
1533 /* skip current filter if it contains no attributes */
1534 if (!cmd->filters[data->current_filter].num_attrs)
1535 continue;
1536
1537 /* attach the filter to current mac */
1538 bcast_mac->attached_filters |=
1539 cpu_to_le16(BIT(data->current_filter));
1540
1541 data->current_filter++;
1542 }
1543}
1544
de06a59e
EP		 1545bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1546 struct iwl_bcast_filter_cmd *cmd)
c87163b9 1547{
c87163b9
EP		 1548 struct iwl_bcast_iter_data iter_data = {
1549 .mvm = mvm,
de06a59e 1550 .cmd = cmd,
c87163b9
EP		 1551 };
1552
3b8983b1
MS		 1553 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1554 return false;
1555
de06a59e
EP		 1556 memset(cmd, 0, sizeof(*cmd));
1557 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1558 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1559
1560#ifdef CONFIG_IWLWIFI_DEBUGFS
1561 /* use debugfs filters/macs if override is configured */
1562 if (mvm->dbgfs_bcast_filtering.override) {
1563 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1564 sizeof(cmd->filters));
1565 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1566 sizeof(cmd->macs));
1567 return true;
1568 }
1569#endif
c87163b9
EP		 1570
1571 /* if no filters are configured, do nothing */
1572 if (!mvm->bcast_filters)
de06a59e 1573 return false;
c87163b9
EP		 1574
1575 /* configure and attach these filters for each associated sta vif */
1576 ieee80211_iterate_active_interfaces(
1577 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1578 iwl_mvm_bcast_filter_iterator, &iter_data);
1579
de06a59e
EP		 1580 return true;
1581}
1582static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1583 struct ieee80211_vif *vif)
1584{
1585 struct iwl_bcast_filter_cmd cmd;
1586
1587 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1588 return 0;
1589
1590 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1591 return 0;
1592
a1022927 1593 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
c87163b9
EP		 1594 sizeof(cmd), &cmd);
1595}
1596#else
1597static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1598 struct ieee80211_vif *vif)
1599{
1600 return 0;
1601}
1602#endif
1603
8ca151b5
JB		 1604static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1605 struct ieee80211_vif *vif,
1606 struct ieee80211_bss_conf *bss_conf,
1607 u32 changes)
1608{
1609 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1610 int ret;
1611
6e97b0d2
IP		 1612 /*
1613 * Re-calculate the tsf id, as the master-slave relations depend on the
1614 * beacon interval, which was not known when the station interface was
1615 * added.
1616 */
1617 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1618 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1619
3dfd3a97
JB		 1620 /*
1621 * If we're not associated yet, take the (new) BSSID before associating
1622 * so the firmware knows. If we're already associated, then use the old
1623 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1624 * branch for disassociation below.
1625 */
1626 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1627 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1628
1629 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
8ca151b5
JB		 1630 if (ret)
1631 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1632
3dfd3a97
JB		 1633 /* after sending it once, adopt mac80211 data */
1634 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1635 mvmvif->associated = bss_conf->assoc;
1636
8ca151b5
JB		 1637 if (changes & BSS_CHANGED_ASSOC) {
1638 if (bss_conf->assoc) {
1639 /* add quota for this interface */
0166230c 1640 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1641 if (ret) {
1642 IWL_ERR(mvm, "failed to update quotas\n");
1643 return;
1644 }
016d27e1
JB		 1645
1646 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1647 &mvm->status)) {
1648 /*
1649 * If we're restarting then the firmware will
1650 * obviously have lost synchronisation with
1651 * the AP. It will attempt to synchronise by
1652 * itself, but we can make it more reliable by
1653 * scheduling a session protection time event.
1654 *
1655 * The firmware needs to receive a beacon to
1656 * catch up with synchronisation, use 110% of
1657 * the beacon interval.
1658 *
1659 * Set a large maximum delay to allow for more
1660 * than a single interface.
1661 */
1662 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1663 iwl_mvm_protect_session(mvm, vif, dur, dur,
d20d37bc 1664 5 * dur, false);
016d27e1 1665 }
1f3b0ff8
LE		 1666
1667 iwl_mvm_sf_update(mvm, vif, false);
175a70b7 1668 iwl_mvm_power_vif_assoc(mvm, vif);
697162a1 1669 if (vif->p2p) {
29a90a49 1670 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
697162a1
EG		 1671 iwl_mvm_update_smps(mvm, vif,
1672 IWL_MVM_SMPS_REQ_PROT,
1673 IEEE80211_SMPS_DYNAMIC);
1674 }
8ca151b5 1675 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1f3b0ff8
LE		 1676 /*
1677 * If update fails - SF might be running in associated
1678 * mode while disassociated - which is forbidden.
1679 */
1680 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1681 "Failed to update SF upon disassociation\n");
1682
8ca151b5
JB		 1683 /* remove AP station now that the MAC is unassoc */
1684 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1685 if (ret)
1686 IWL_ERR(mvm, "failed to remove AP station\n");
37577fe2
EP		 1687
1688 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1689 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
8ca151b5
JB		 1690 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1691 /* remove quota for this interface */
0166230c 1692 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1693 if (ret)
1694 IWL_ERR(mvm, "failed to update quotas\n");
29a90a49
EP		 1695
1696 if (vif->p2p)
1697 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
3dfd3a97
JB		 1698
1699 /* this will take the cleared BSSID from bss_conf */
1700 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1701 if (ret)
1702 IWL_ERR(mvm,
1703 "failed to update MAC %pM (clear after unassoc)\n",
1704 vif->addr);
8ca151b5 1705 }
a20fd398 1706
e59647ea 1707 iwl_mvm_recalc_multicast(mvm);
c87163b9 1708 iwl_mvm_configure_bcast_filter(mvm, vif);
e59647ea 1709
a20fd398
AO		 1710 /* reset rssi values */
1711 mvmvif->bf_data.ave_beacon_signal = 0;
1712
8e484f0b 1713 iwl_mvm_bt_coex_vif_change(mvm);
f94045ed
EG		 1714 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1715 IEEE80211_SMPS_AUTOMATIC);
989c6505 1716 } else if (changes & BSS_CHANGED_BEACON_INFO) {
210a544e
JB		 1717 /*
1718 * We received a beacon _after_ association so
1719 * remove the session protection.
1720 */
1721 iwl_mvm_remove_time_event(mvm, mvmvif,
1722 &mvmvif->time_event_data);
8ca151b5 1723 }
cc87d322
EH		 1724
1725 if (changes & BSS_CHANGED_BEACON_INFO) {
1726 iwl_mvm_sf_update(mvm, vif, false);
1727 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1728 }
1729
1bc10d3b
JB		 1730 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1731 ret = iwl_mvm_power_update_mac(mvm);
1732 if (ret)
1733 IWL_ERR(mvm, "failed to update power mode\n");
1734 }
1735
88f2fd73
MG		 1736 if (changes & BSS_CHANGED_TXPOWER) {
1737 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1738 bss_conf->txpower);
1739 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1740 }
a20fd398
AO		 1741
1742 if (changes & BSS_CHANGED_CQM) {
3c6acb61 1743 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
a20fd398
AO		 1744 /* reset cqm events tracking */
1745 mvmvif->bf_data.last_cqm_event = 0;
fa7b2e7f
AA		 1746 if (mvmvif->bf_data.bf_enabled) {
1747 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1748 if (ret)
1749 IWL_ERR(mvm,
1750 "failed to update CQM thresholds\n");
1751 }
a20fd398 1752 }
2ee8f021
EP		 1753
1754 if (changes & BSS_CHANGED_ARP_FILTER) {
3c6acb61 1755 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2ee8f021
EP		 1756 iwl_mvm_configure_bcast_filter(mvm, vif);
1757 }
8ca151b5
JB		 1758}
1759
5023d966
JB		 1760static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1761 struct ieee80211_vif *vif)
8ca151b5
JB		 1762{
1763 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1764 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1765 int ret;
1766
576eeee9
EP		 1767 /*
1768 * iwl_mvm_mac_ctxt_add() might read directly from the device
1769 * (the system time), so make sure it is available.
1770 */
1771 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1772 if (ret)
1773 return ret;
1774
8ca151b5
JB		 1775 mutex_lock(&mvm->mutex);
1776
1777 /* Send the beacon template */
1778 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1779 if (ret)
1780 goto out_unlock;
1781
6e97b0d2
IP		 1782 /*
1783 * Re-calculate the tsf id, as the master-slave relations depend on the
1784 * beacon interval, which was not known when the AP interface was added.
1785 */
1786 if (vif->type == NL80211_IFTYPE_AP)
1787 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1788
8ca151b5
JB		 1789 /* Add the mac context */
1790 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1791 if (ret)
1792 goto out_unlock;
1793
1794 /* Perform the binding */
1795 ret = iwl_mvm_binding_add_vif(mvm, vif);
1796 if (ret)
1797 goto out_remove;
1798
8ca151b5
JB		 1799 /* Send the bcast station. At this stage the TBTT and DTIM time events
1800 * are added and applied to the scheduler */
013290aa 1801 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
8ca151b5
JB		 1802 if (ret)
1803 goto out_unbind;
1804
5691e218
IP		 1805 /* must be set before quota calculations */
1806 mvmvif->ap_ibss_active = true;
1807
a11e144e 1808 /* power updated needs to be done before quotas */
999609f1 1809 iwl_mvm_power_update_mac(mvm);
a11e144e 1810
0166230c 1811 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5 1812 if (ret)
a11e144e 1813 goto out_quota_failed;
8ca151b5 1814
5023d966 1815 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1816 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 1817 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 1818
29a90a49
EP		 1819 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1820
8e484f0b 1821 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1822
f697267f
AN		 1823 /* we don't support TDLS during DCM */
1824 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1825 iwl_mvm_teardown_tdls_peers(mvm);
1826
8ca151b5
JB		 1827 mutex_unlock(&mvm->mutex);
1828 return 0;
1829
a11e144e 1830out_quota_failed:
999609f1 1831 iwl_mvm_power_update_mac(mvm);
5691e218 1832 mvmvif->ap_ibss_active = false;
013290aa 1833 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5
JB		 1834out_unbind:
1835 iwl_mvm_binding_remove_vif(mvm, vif);
1836out_remove:
1837 iwl_mvm_mac_ctxt_remove(mvm, vif);
1838out_unlock:
1839 mutex_unlock(&mvm->mutex);
576eeee9 1840 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
8ca151b5
JB		 1841 return ret;
1842}
1843
5023d966
JB		 1844static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1845 struct ieee80211_vif *vif)
8ca151b5
JB		 1846{
1847 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1848 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1849
38a12b5b
JB		 1850 iwl_mvm_prepare_mac_removal(mvm, vif);
1851
8ca151b5
JB		 1852 mutex_lock(&mvm->mutex);
1853
664322fa 1854 /* Handle AP stop while in CSA */
7f0a7c67
AO		 1855 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1856 iwl_mvm_remove_time_event(mvm, mvmvif,
1857 &mvmvif->time_event_data);
664322fa 1858 RCU_INIT_POINTER(mvm->csa_vif, NULL);
7f0a7c67 1859 }
664322fa 1860
003e5236
AO		 1861 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1862 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1863 mvm->csa_tx_block_bcn_timeout = 0;
1864 }
1865
5023d966 1866 mvmvif->ap_ibss_active = false;
1c87bbad 1867 mvm->ap_last_beacon_gp2 = 0;
8ca151b5 1868
8e484f0b 1869 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1870
29a90a49
EP		 1871 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1872
5023d966 1873 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1874 if (vif->p2p && mvm->p2p_device_vif)
3dfd3a97 1875 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
8ca151b5 1876
0166230c 1877 iwl_mvm_update_quotas(mvm, NULL);
013290aa 1878 iwl_mvm_send_rm_bcast_sta(mvm, vif);
8ca151b5 1879 iwl_mvm_binding_remove_vif(mvm, vif);
a11e144e 1880
999609f1 1881 iwl_mvm_power_update_mac(mvm);
a11e144e 1882
8ca151b5
JB		 1883 iwl_mvm_mac_ctxt_remove(mvm, vif);
1884
1885 mutex_unlock(&mvm->mutex);
1886}
1887
5023d966
JB		 1888static void
1889iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1890 struct ieee80211_vif *vif,
1891 struct ieee80211_bss_conf *bss_conf,
1892 u32 changes)
8ca151b5 1893{
be2056fc 1894 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8a5e3660 1895
be2056fc
IP		 1896 /* Changes will be applied when the AP/IBSS is started */
1897 if (!mvmvif->ap_ibss_active)
1898 return;
1899
863230da 1900 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
f7d8b702 1901 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
3dfd3a97 1902 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
863230da 1903 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
8a5e3660 1904
8ca151b5 1905 /* Need to send a new beacon template to the FW */
863230da
JB		 1906 if (changes & BSS_CHANGED_BEACON &&
1907 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1908 IWL_WARN(mvm, "Failed updating beacon data\n");
79b7a69d
HD		 1909
1910 if (changes & BSS_CHANGED_TXPOWER) {
1911 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1912 bss_conf->txpower);
1913 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1914 }
1915
8ca151b5
JB		 1916}
1917
1918static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1919 struct ieee80211_vif *vif,
1920 struct ieee80211_bss_conf *bss_conf,
1921 u32 changes)
1922{
1923 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1924
576eeee9
EP		 1925 /*
1926 * iwl_mvm_bss_info_changed_station() might call
1927 * iwl_mvm_protect_session(), which reads directly from
1928 * the device (the system time), so make sure it is available.
1929 */
1930 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1931 return;
1932
8ca151b5
JB		 1933 mutex_lock(&mvm->mutex);
1934
723f02ed 1935 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
fb98be5e 1936 iwl_mvm_scan_offload_stop(mvm, true);
723f02ed 1937
8ca151b5
JB		 1938 switch (vif->type) {
1939 case NL80211_IFTYPE_STATION:
1940 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1941 break;
1942 case NL80211_IFTYPE_AP:
5023d966
JB		 1943 case NL80211_IFTYPE_ADHOC:
1944 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
8ca151b5
JB		 1945 break;
1946 default:
1947 /* shouldn't happen */
1948 WARN_ON_ONCE(1);
1949 }
1950
1951 mutex_unlock(&mvm->mutex);
576eeee9 1952 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
8ca151b5
JB		 1953}
1954
4660dfbb
EP		 1955static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1956 enum iwl_scan_status scan_type)
1957{
1958 int ret;
1959 bool wait_for_handlers = false;
1960
1961 mutex_lock(&mvm->mutex);
1962
1963 if (mvm->scan_status != scan_type) {
1964 ret = 0;
1965 /* make sure there are no pending notifications */
1966 wait_for_handlers = true;
1967 goto out;
1968 }
1969
1970 switch (scan_type) {
1971 case IWL_MVM_SCAN_SCHED:
1972 ret = iwl_mvm_scan_offload_stop(mvm, true);
1973 break;
1974 case IWL_MVM_SCAN_OS:
1975 ret = iwl_mvm_cancel_scan(mvm);
1976 break;
1977 case IWL_MVM_SCAN_NONE:
1978 default:
1979 WARN_ON_ONCE(1);
1980 ret = -EINVAL;
1981 break;
1982 }
1983 if (ret)
1984 goto out;
1985
1986 wait_for_handlers = true;
1987out:
1988 mutex_unlock(&mvm->mutex);
1989
1990 /* make sure we consume the completion notification */
1991 if (wait_for_handlers)
1992 iwl_mvm_wait_for_async_handlers(mvm);
1993
1994 return ret;
1995}
8ca151b5
JB		 1996static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1997 struct ieee80211_vif *vif,
c56ef672 1998 struct ieee80211_scan_request *hw_req)
8ca151b5
JB		 1999{
2000 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
c56ef672 2001 struct cfg80211_scan_request *req = &hw_req->req;
8ca151b5
JB		 2002 int ret;
2003
762533ba
DS		 2004 if (req->n_channels == 0 ||
2005 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
8ca151b5
JB		 2006 return -EINVAL;
2007
d2496221
DS		 2008 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2009 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
2010 if (ret)
2011 return ret;
2012 }
4660dfbb 2013
8ca151b5
JB		 2014 mutex_lock(&mvm->mutex);
2015
4660dfbb 2016 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
8ca151b5 2017 ret = -EBUSY;
519e2026
AN		 2018 goto out;
2019 }
8ca151b5 2020
519e2026
AN		 2021 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
2022
b975e55a 2023 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
d2496221 2024 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
b975e55a
DS		 2025 else if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
2026 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
fb98be5e
DS		 2027 else
2028 ret = iwl_mvm_scan_request(mvm, vif, req);
2029
519e2026
AN		 2030 if (ret)
2031 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
2032out:
8ca151b5 2033 mutex_unlock(&mvm->mutex);
8ca151b5
JB		 2034 return ret;
2035}
2036
2037static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2038 struct ieee80211_vif *vif)
2039{
2040 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2041
2042 mutex_lock(&mvm->mutex);
2043
2044 iwl_mvm_cancel_scan(mvm);
2045
2046 mutex_unlock(&mvm->mutex);
2047}
2048
2049static void
2050iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
3e56eadf 2051 struct ieee80211_sta *sta, u16 tids,
8ca151b5
JB		 2052 int num_frames,
2053 enum ieee80211_frame_release_type reason,
2054 bool more_data)
2055{
2056 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5 2057
3e56eadf 2058 /* Called when we need to transmit (a) frame(s) from mac80211 */
8ca151b5 2059
3e56eadf
JB		 2060 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2061 tids, more_data, false);
2062}
2063
2064static void
2065iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2066 struct ieee80211_sta *sta, u16 tids,
2067 int num_frames,
2068 enum ieee80211_frame_release_type reason,
2069 bool more_data)
2070{
2071 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2072
2073 /* Called when we need to transmit (a) frame(s) from agg queue */
2074
2075 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2076 tids, more_data, true);
8ca151b5
JB		 2077}
2078
2079static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2080 struct ieee80211_vif *vif,
2081 enum sta_notify_cmd cmd,
2082 struct ieee80211_sta *sta)
2083{
2084 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5b577a90 2085 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3e56eadf 2086 int tid;
8ca151b5
JB		 2087
2088 switch (cmd) {
2089 case STA_NOTIFY_SLEEP:
e3d4bc8c 2090 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5 2091 ieee80211_sta_block_awake(hw, sta, true);
3e56eadf
JB		 2092 spin_lock_bh(&mvmsta->lock);
2093 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2094 struct iwl_mvm_tid_data *tid_data;
2095
2096 tid_data = &mvmsta->tid_data[tid];
2097 if (tid_data->state != IWL_AGG_ON &&
2098 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2099 continue;
2100 if (iwl_mvm_tid_queued(tid_data) == 0)
2101 continue;
2102 ieee80211_sta_set_buffered(sta, tid, true);
2103 }
2104 spin_unlock_bh(&mvmsta->lock);
8ca151b5
JB		 2105 /*
2106 * The fw updates the STA to be asleep. Tx packets on the Tx
2107 * queues to this station will not be transmitted. The fw will
2108 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2109 */
2110 break;
2111 case STA_NOTIFY_AWAKE:
881acd89 2112 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
8ca151b5 2113 break;
9cc40712 2114 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 2115 break;
2116 default:
2117 break;
2118 }
2119}
2120
1ddbbb0c
JB		 2121static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2122 struct ieee80211_vif *vif,
2123 struct ieee80211_sta *sta)
2124{
2125 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2126 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2127
2128 /*
2129 * This is called before mac80211 does RCU synchronisation,
2130 * so here we already invalidate our internal RCU-protected
2131 * station pointer. The rest of the code will thus no longer
2132 * be able to find the station this way, and we don't rely
2133 * on further RCU synchronisation after the sta_state()
2134 * callback deleted the station.
2135 */
2136 mutex_lock(&mvm->mutex);
2137 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2138 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2139 ERR_PTR(-ENOENT));
2140 mutex_unlock(&mvm->mutex);
2141}
2142
8ca151b5
JB		 2143static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2144 struct ieee80211_vif *vif,
2145 struct ieee80211_sta *sta,
2146 enum ieee80211_sta_state old_state,
2147 enum ieee80211_sta_state new_state)
2148{
2149 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2150 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2151 int ret;
2152
2153 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2154 sta->addr, old_state, new_state);
2155
2156 /* this would be a mac80211 bug ... but don't crash */
2157 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2158 return -EINVAL;
2159
2160 /* if a STA is being removed, reuse its ID */
2161 flush_work(&mvm->sta_drained_wk);
2162
2163 mutex_lock(&mvm->mutex);
2164 if (old_state == IEEE80211_STA_NOTEXIST &&
2165 new_state == IEEE80211_STA_NONE) {
48bc1307
JB		 2166 /*
2167 * Firmware bug - it'll crash if the beacon interval is less
2168 * than 16. We can't avoid connecting at all, so refuse the
2169 * station state change, this will cause mac80211 to abandon
2170 * attempts to connect to this AP, and eventually wpa_s will
2171 * blacklist the AP...
2172 */
2173 if (vif->type == NL80211_IFTYPE_STATION &&
2174 vif->bss_conf.beacon_int < 16) {
2175 IWL_ERR(mvm,
2176 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2177 sta->addr, vif->bss_conf.beacon_int);
2178 ret = -EINVAL;
2179 goto out_unlock;
2180 }
cf7b491d
AN		 2181
2182 if (sta->tdls &&
2183 (vif->p2p ||
fa3d07e4
AN		 2184 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2185 IWL_MVM_TDLS_STA_COUNT ||
cf7b491d
AN		 2186 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2187 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2188 ret = -EBUSY;
2189 goto out_unlock;
2190 }
2191
8ca151b5 2192 ret = iwl_mvm_add_sta(mvm, vif, sta);
fa3d07e4
AN		 2193 if (sta->tdls && ret == 0)
2194 iwl_mvm_recalc_tdls_state(mvm, vif, true);
8ca151b5
JB		 2195 } else if (old_state == IEEE80211_STA_NONE &&
2196 new_state == IEEE80211_STA_AUTH) {
e820c2da
HD		 2197 /*
2198 * EBS may be disabled due to previous failures reported by FW.
2199 * Reset EBS status here assuming environment has been changed.
2200 */
2201 mvm->last_ebs_successful = true;
8ca151b5
JB		 2202 ret = 0;
2203 } else if (old_state == IEEE80211_STA_AUTH &&
2204 new_state == IEEE80211_STA_ASSOC) {
7a453973
JB		 2205 ret = iwl_mvm_update_sta(mvm, vif, sta);
2206 if (ret == 0)
2207 iwl_mvm_rs_rate_init(mvm, sta,
b87c2179
ES		 2208 mvmvif->phy_ctxt->channel->band,
2209 true);
8ca151b5
JB		 2210 } else if (old_state == IEEE80211_STA_ASSOC &&
2211 new_state == IEEE80211_STA_AUTHORIZED) {
f59e0e3c
AN		 2212
2213 /* we don't support TDLS during DCM */
2214 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2215 iwl_mvm_teardown_tdls_peers(mvm);
2216
7df15b1e 2217 /* enable beacon filtering */
fa7b2e7f 2218 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2219 ret = 0;
2220 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2221 new_state == IEEE80211_STA_ASSOC) {
7df15b1e 2222 /* disable beacon filtering */
a1022927 2223 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2224 ret = 0;
2225 } else if (old_state == IEEE80211_STA_ASSOC &&
2226 new_state == IEEE80211_STA_AUTH) {
2227 ret = 0;
2228 } else if (old_state == IEEE80211_STA_AUTH &&
2229 new_state == IEEE80211_STA_NONE) {
2230 ret = 0;
2231 } else if (old_state == IEEE80211_STA_NONE &&
2232 new_state == IEEE80211_STA_NOTEXIST) {
2233 ret = iwl_mvm_rm_sta(mvm, vif, sta);
fa3d07e4
AN		 2234 if (sta->tdls)
2235 iwl_mvm_recalc_tdls_state(mvm, vif, false);
8ca151b5
JB		 2236 } else {
2237 ret = -EIO;
2238 }
48bc1307 2239 out_unlock:
8ca151b5
JB		 2240 mutex_unlock(&mvm->mutex);
2241
9c126cd6
LK		 2242 if (sta->tdls && ret == 0) {
2243 if (old_state == IEEE80211_STA_NOTEXIST &&
2244 new_state == IEEE80211_STA_NONE)
2245 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2246 else if (old_state == IEEE80211_STA_NONE &&
2247 new_state == IEEE80211_STA_NOTEXIST)
2248 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2249 }
2250
8ca151b5
JB		 2251 return ret;
2252}
2253
2254static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2255{
2256 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2257
2258 mvm->rts_threshold = value;
2259
2260 return 0;
2261}
2262
1f3b0ff8
LE		 2263static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2264 struct ieee80211_vif *vif,
2265 struct ieee80211_sta *sta, u32 changed)
2266{
2267 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2268
2269 if (vif->type == NL80211_IFTYPE_STATION &&
2270 changed & IEEE80211_RC_NSS_CHANGED)
2271 iwl_mvm_sf_update(mvm, vif, false);
2272}
2273
8ca151b5
JB		 2274static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2275 struct ieee80211_vif *vif, u16 ac,
2276 const struct ieee80211_tx_queue_params *params)
2277{
2278 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2279 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2280
2281 mvmvif->queue_params[ac] = *params;
2282
2283 /*
2284 * No need to update right away, we'll get BSS_CHANGED_QOS
2285 * The exception is P2P_DEVICE interface which needs immediate update.
2286 */
2287 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2288 int ret;
2289
2290 mutex_lock(&mvm->mutex);
3dfd3a97 2291 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
8ca151b5
JB		 2292 mutex_unlock(&mvm->mutex);
2293 return ret;
2294 }
2295 return 0;
2296}
2297
2298static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2299 struct ieee80211_vif *vif)
2300{
2301 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2302 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2303 200 + vif->bss_conf.beacon_int);
2304 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2305 100 + vif->bss_conf.beacon_int);
2306
2307 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2308 return;
2309
576eeee9
EP		 2310 /*
2311 * iwl_mvm_protect_session() reads directly from the device
2312 * (the system time), so make sure it is available.
2313 */
2314 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2315 return;
2316
8ca151b5
JB		 2317 mutex_lock(&mvm->mutex);
2318 /* Try really hard to protect the session and hear a beacon */
d20d37bc 2319 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
8ca151b5 2320 mutex_unlock(&mvm->mutex);
576eeee9
EP		 2321
2322 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
8ca151b5
JB		 2323}
2324
35a000b7
DS		 2325static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2326 struct ieee80211_vif *vif,
2327 struct cfg80211_sched_scan_request *req,
633e2713 2328 struct ieee80211_scan_ies *ies)
35a000b7
DS		 2329{
2330 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2331 int ret;
2332
d2496221
DS		 2333 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2334 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2335 if (ret)
2336 return ret;
2337 }
4660dfbb 2338
35a000b7
DS		 2339 mutex_lock(&mvm->mutex);
2340
59ecb128
AB		 2341 /* Newest FW fixes sched scan while connected on another interface */
2342 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2343 if (!vif->bss_conf.idle) {
2344 ret = -EBUSY;
2345 goto out;
2346 }
2347 } else if (!iwl_mvm_is_idle(mvm)) {
bd5e4744
DS		 2348 ret = -EBUSY;
2349 goto out;
2350 }
2351
4660dfbb 2352 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
35a000b7
DS		 2353 ret = -EBUSY;
2354 goto out;
2355 }
2356
b141c235 2357 ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
35a000b7 2358 if (ret)
b141c235 2359 mvm->scan_status = IWL_MVM_SCAN_NONE;
d2496221 2360
35a000b7
DS		 2361out:
2362 mutex_unlock(&mvm->mutex);
2363 return ret;
2364}
2365
37e3308c
JB		 2366static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2367 struct ieee80211_vif *vif)
35a000b7
DS		 2368{
2369 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
33ea27f6 2370 int ret;
35a000b7
DS		 2371
2372 mutex_lock(&mvm->mutex);
fb98be5e 2373 ret = iwl_mvm_scan_offload_stop(mvm, false);
35a000b7 2374 mutex_unlock(&mvm->mutex);
33ea27f6 2375 iwl_mvm_wait_for_async_handlers(mvm);
37e3308c 2376
33ea27f6 2377 return ret;
d2496221 2378
35a000b7
DS		 2379}
2380
8ca151b5
JB		 2381static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2382 enum set_key_cmd cmd,
2383 struct ieee80211_vif *vif,
2384 struct ieee80211_sta *sta,
2385 struct ieee80211_key_conf *key)
2386{
2387 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2388 int ret;
2389
2390 if (iwlwifi_mod_params.sw_crypto) {
2391 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2392 return -EOPNOTSUPP;
2393 }
2394
2395 switch (key->cipher) {
2396 case WLAN_CIPHER_SUITE_TKIP:
2397 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2398 /* fall-through */
2399 case WLAN_CIPHER_SUITE_CCMP:
2400 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2401 break;
2402 case WLAN_CIPHER_SUITE_AES_CMAC:
2403 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2404 break;
2405 case WLAN_CIPHER_SUITE_WEP40:
2406 case WLAN_CIPHER_SUITE_WEP104:
ba3943b0
JB		 2407 /* For non-client mode, only use WEP keys for TX as we probably
2408 * don't have a station yet anyway and would then have to keep
2409 * track of the keys, linking them to each of the clients/peers
2410 * as they appear. For now, don't do that, for performance WEP
2411 * offload doesn't really matter much, but we need it for some
2412 * other offload features in client mode.
8ca151b5 2413 */
ba3943b0
JB		 2414 if (vif->type != NL80211_IFTYPE_STATION)
2415 return 0;
2416 break;
8ca151b5 2417 default:
e36e5433
MS		 2418 /* currently FW supports only one optional cipher scheme */
2419 if (hw->n_cipher_schemes &&
2420 hw->cipher_schemes->cipher == key->cipher)
2421 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2422 else
2423 return -EOPNOTSUPP;
8ca151b5
JB		 2424 }
2425
2426 mutex_lock(&mvm->mutex);
2427
2428 switch (cmd) {
2429 case SET_KEY:
5023d966
JB		 2430 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2431 vif->type == NL80211_IFTYPE_AP) && !sta) {
2432 /*
2433 * GTK on AP interface is a TX-only key, return 0;
2434 * on IBSS they're per-station and because we're lazy
2435 * we don't support them for RX, so do the same.
2436 */
6caffd4f
JB		 2437 ret = 0;
2438 key->hw_key_idx = STA_KEY_IDX_INVALID;
2439 break;
2440 }
2441
8ca151b5
JB		 2442 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2443 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2444 if (ret) {
2445 IWL_WARN(mvm, "set key failed\n");
2446 /*
2447 * can't add key for RX, but we don't need it
2448 * in the device for TX so still return 0
2449 */
6caffd4f 2450 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 2451 ret = 0;
2452 }
2453
2454 break;
2455 case DISABLE_KEY:
6caffd4f
JB		 2456 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2457 ret = 0;
2458 break;
2459 }
2460
8ca151b5
JB		 2461 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2462 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2463 break;
2464 default:
2465 ret = -EINVAL;
2466 }
2467
2468 mutex_unlock(&mvm->mutex);
2469 return ret;
2470}
2471
2472static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2473 struct ieee80211_vif *vif,
2474 struct ieee80211_key_conf *keyconf,
2475 struct ieee80211_sta *sta,
2476 u32 iv32, u16 *phase1key)
2477{
2478 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2479
5023d966
JB		 2480 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2481 return;
2482
8ca151b5
JB		 2483 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2484}
2485
2486
b112889c
AM		 2487static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2488 struct iwl_rx_packet *pkt, void *data)
2489{
2490 struct iwl_mvm *mvm =
2491 container_of(notif_wait, struct iwl_mvm, notif_wait);
2492 struct iwl_hs20_roc_res *resp;
2493 int resp_len = iwl_rx_packet_payload_len(pkt);
2494 struct iwl_mvm_time_event_data *te_data = data;
2495
2496 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2497 return true;
2498
2499 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2500 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2501 return true;
2502 }
2503
2504 resp = (void *)pkt->data;
2505
2506 IWL_DEBUG_TE(mvm,
2507 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2508 resp->status, resp->event_unique_id);
2509
2510 te_data->uid = le32_to_cpu(resp->event_unique_id);
2511 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2512 te_data->uid);
2513
2514 spin_lock_bh(&mvm->time_event_lock);
2515 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2516 spin_unlock_bh(&mvm->time_event_lock);
2517
2518 return true;
2519}
2520
2521#define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2522static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2523 struct ieee80211_channel *channel,
2524 struct ieee80211_vif *vif,
2525 int duration)
2526{
2527 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2528 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2529 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2530 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2531 struct iwl_notification_wait wait_time_event;
2532 struct iwl_hs20_roc_req aux_roc_req = {
2533 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2534 .id_and_color =
2535 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2536 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2537 /* Set the channel info data */
2538 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2539 PHY_BAND_24 : PHY_BAND_5,
2540 .channel_info.channel = channel->hw_value,
2541 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2542 /* Set the time and duration */
2543 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2544 .apply_time_max_delay =
2545 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2546 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2547 };
2548
2549 /* Set the node address */
2550 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2551
a6cc5163
MG		 2552 lockdep_assert_held(&mvm->mutex);
2553
2554 spin_lock_bh(&mvm->time_event_lock);
2555
2556 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2557 spin_unlock_bh(&mvm->time_event_lock);
2558 return -EIO;
2559 }
2560
b112889c
AM		 2561 te_data->vif = vif;
2562 te_data->duration = duration;
2563 te_data->id = HOT_SPOT_CMD;
2564
b112889c
AM		 2565 spin_unlock_bh(&mvm->time_event_lock);
2566
2567 /*
2568 * Use a notification wait, which really just processes the
2569 * command response and doesn't wait for anything, in order
2570 * to be able to process the response and get the UID inside
2571 * the RX path. Using CMD_WANT_SKB doesn't work because it
2572 * stores the buffer and then wakes up this thread, by which
2573 * time another notification (that the time event started)
2574 * might already be processed unsuccessfully.
2575 */
2576 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2577 time_event_response,
2578 ARRAY_SIZE(time_event_response),
2579 iwl_mvm_rx_aux_roc, te_data);
2580
2581 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2582 &aux_roc_req);
2583
2584 if (res) {
2585 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2586 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2587 goto out_clear_te;
2588 }
2589
2590 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2591 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2592 /* should never fail */
2593 WARN_ON_ONCE(res);
2594
2595 if (res) {
2596 out_clear_te:
2597 spin_lock_bh(&mvm->time_event_lock);
2598 iwl_mvm_te_clear_data(mvm, te_data);
2599 spin_unlock_bh(&mvm->time_event_lock);
2600 }
2601
2602 return res;
2603}
2604
8ca151b5
JB		 2605static int iwl_mvm_roc(struct ieee80211_hw *hw,
2606 struct ieee80211_vif *vif,
2607 struct ieee80211_channel *channel,
d339d5ca
IP		 2608 int duration,
2609 enum ieee80211_roc_type type)
8ca151b5
JB		 2610{
2611 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 2612 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 2613 struct cfg80211_chan_def chandef;
31d385ae
IP		 2614 struct iwl_mvm_phy_ctxt *phy_ctxt;
2615 int ret, i;
2616
2617 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2618 duration, type);
8ca151b5 2619
a6cc5163
MG		 2620 mutex_lock(&mvm->mutex);
2621
b112889c
AM		 2622 switch (vif->type) {
2623 case NL80211_IFTYPE_STATION:
5ac6c72e
LC		 2624 if (mvm->fw->ucode_capa.capa[0] &
2625 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
2626 /* Use aux roc framework (HS20) */
2627 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2628 vif, duration);
2629 goto out_unlock;
2630 }
2631 IWL_ERR(mvm, "hotspot not supported\n");
2632 ret = -EINVAL;
a6cc5163 2633 goto out_unlock;
b112889c
AM		 2634 case NL80211_IFTYPE_P2P_DEVICE:
2635 /* handle below */
2636 break;
2637 default:
2638 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
a6cc5163
MG		 2639 ret = -EINVAL;
2640 goto out_unlock;
8ca151b5
JB		 2641 }
2642
31d385ae
IP		 2643 for (i = 0; i < NUM_PHY_CTX; i++) {
2644 phy_ctxt = &mvm->phy_ctxts[i];
2645 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2646 continue;
2647
2648 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2649 /*
2650 * Unbind the P2P_DEVICE from the current PHY context,
2651 * and if the PHY context is not used remove it.
2652 */
2653 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2654 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2655 goto out_unlock;
2656
2657 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2658
2659 /* Bind the P2P_DEVICE to the current PHY Context */
2660 mvmvif->phy_ctxt = phy_ctxt;
2661
2662 ret = iwl_mvm_binding_add_vif(mvm, vif);
2663 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2664 goto out_unlock;
2665
2666 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2667 goto schedule_time_event;
2668 }
2669 }
2670
2671 /* Need to update the PHY context only if the ROC channel changed */
2672 if (channel == mvmvif->phy_ctxt->channel)
2673 goto schedule_time_event;
2674
8ca151b5 2675 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 2676
31d385ae
IP		 2677 /*
2678 * Change the PHY context configuration as it is currently referenced
2679 * only by the P2P Device MAC
2680 */
2681 if (mvmvif->phy_ctxt->ref == 1) {
2682 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2683 &chandef, 1, 1);
2684 if (ret)
2685 goto out_unlock;
2686 } else {
2687 /*
2688 * The PHY context is shared with other MACs. Need to remove the
2689 * P2P Device from the binding, allocate an new PHY context and
2690 * create a new binding
2691 */
2692 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2693 if (!phy_ctxt) {
2694 ret = -ENOSPC;
2695 goto out_unlock;
2696 }
2697
2698 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2699 1, 1);
2700 if (ret) {
2701 IWL_ERR(mvm, "Failed to change PHY context\n");
2702 goto out_unlock;
2703 }
2704
2705 /* Unbind the P2P_DEVICE from the current PHY context */
2706 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2707 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2708 goto out_unlock;
2709
2710 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2711
2712 /* Bind the P2P_DEVICE to the new allocated PHY context */
2713 mvmvif->phy_ctxt = phy_ctxt;
2714
2715 ret = iwl_mvm_binding_add_vif(mvm, vif);
2716 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2717 goto out_unlock;
2718
2719 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2720 }
2721
2722schedule_time_event:
8ca151b5 2723 /* Schedule the time events */
e635c797 2724 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 2725
31d385ae 2726out_unlock:
8ca151b5
JB		 2727 mutex_unlock(&mvm->mutex);
2728 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 2729 return ret;
2730}
2731
2732static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2733{
2734 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2735
2736 IWL_DEBUG_MAC80211(mvm, "enter\n");
2737
2738 mutex_lock(&mvm->mutex);
bf5da87f 2739 iwl_mvm_stop_roc(mvm);
8ca151b5
JB		 2740 mutex_unlock(&mvm->mutex);
2741
2742 IWL_DEBUG_MAC80211(mvm, "leave\n");
2743 return 0;
2744}
2745
b08c1d97
LC		 2746static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2747 struct ieee80211_chanctx_conf *ctx)
8ca151b5 2748{
fe0f2de3
IP		 2749 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2750 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 2751 int ret;
2752
b08c1d97
LC		 2753 lockdep_assert_held(&mvm->mutex);
2754
53a9d61e 2755 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 2756
fe0f2de3
IP		 2757 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2758 if (!phy_ctxt) {
2759 ret = -ENOSPC;
2760 goto out;
2761 }
8ca151b5 2762
dcbc3e1a 2763 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
53a9d61e
IP		 2764 ctx->rx_chains_static,
2765 ctx->rx_chains_dynamic);
fe0f2de3
IP		 2766 if (ret) {
2767 IWL_ERR(mvm, "Failed to add PHY context\n");
2768 goto out;
2769 }
2770
53a9d61e 2771 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 2772 *phy_ctxt_id = phy_ctxt->id;
2773out:
b08c1d97
LC		 2774 return ret;
2775}
2776
2777static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2778 struct ieee80211_chanctx_conf *ctx)
2779{
2780 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2781 int ret;
2782
2783 mutex_lock(&mvm->mutex);
2784 ret = __iwl_mvm_add_chanctx(mvm, ctx);
8ca151b5 2785 mutex_unlock(&mvm->mutex);
b08c1d97 2786
8ca151b5
JB		 2787 return ret;
2788}
2789
b08c1d97
LC		 2790static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2791 struct ieee80211_chanctx_conf *ctx)
2792{
2793 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2794 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2795
2796 lockdep_assert_held(&mvm->mutex);
2797
2798 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2799}
2800
8ca151b5
JB		 2801static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2802 struct ieee80211_chanctx_conf *ctx)
2803{
2804 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 2805
2806 mutex_lock(&mvm->mutex);
b08c1d97 2807 __iwl_mvm_remove_chanctx(mvm, ctx);
8ca151b5
JB		 2808 mutex_unlock(&mvm->mutex);
2809}
2810
2811static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2812 struct ieee80211_chanctx_conf *ctx,
2813 u32 changed)
2814{
2815 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 2816 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2817 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 2818
31d385ae
IP		 2819 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2820 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2821 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2dceedae
AN		 2822 IEEE80211_CHANCTX_CHANGE_RADAR |
2823 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
31d385ae
IP		 2824 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2825 phy_ctxt->ref, changed))
2826 return;
2827
8ca151b5 2828 mutex_lock(&mvm->mutex);
4d66449a 2829 iwl_mvm_bt_coex_vif_change(mvm);
dcbc3e1a 2830 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
8ca151b5
JB		 2831 ctx->rx_chains_static,
2832 ctx->rx_chains_dynamic);
2833 mutex_unlock(&mvm->mutex);
2834}
2835
b08c1d97
LC		 2836static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2837 struct ieee80211_vif *vif,
f0c97783
LC		 2838 struct ieee80211_chanctx_conf *ctx,
2839 bool switching_chanctx)
8ca151b5 2840{
fe0f2de3
IP		 2841 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2842 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 2843 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2844 int ret;
2845
b08c1d97 2846 lockdep_assert_held(&mvm->mutex);
8ca151b5 2847
fe0f2de3 2848 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 2849
2850 switch (vif->type) {
2851 case NL80211_IFTYPE_AP:
4741dd04
LC		 2852 /* only needed if we're switching chanctx (i.e. during CSA) */
2853 if (switching_chanctx) {
bd3398e2
AO		 2854 mvmvif->ap_ibss_active = true;
2855 break;
2856 }
5023d966 2857 case NL80211_IFTYPE_ADHOC:
8ca151b5
JB		 2858 /*
2859 * The AP binding flow is handled as part of the start_ap flow
5023d966 2860 * (in bss_info_changed), similarly for IBSS.
8ca151b5
JB		 2861 */
2862 ret = 0;
b08c1d97 2863 goto out;
8ca151b5 2864 case NL80211_IFTYPE_STATION:
2533edce 2865 break;
8ca151b5 2866 case NL80211_IFTYPE_MONITOR:
2533edce
LC		 2867 /* always disable PS when a monitor interface is active */
2868 mvmvif->ps_disabled = true;
8ca151b5
JB		 2869 break;
2870 default:
2871 ret = -EINVAL;
b08c1d97 2872 goto out;
8ca151b5
JB		 2873 }
2874
2875 ret = iwl_mvm_binding_add_vif(mvm, vif);
2876 if (ret)
b08c1d97 2877 goto out;
8ca151b5
JB		 2878
2879 /*
92d85562
AB		 2880 * Power state must be updated before quotas,
2881 * otherwise fw will complain.
2882 */
999609f1 2883 iwl_mvm_power_update_mac(mvm);
92d85562
AB		 2884
2885 /* Setting the quota at this stage is only required for monitor
8ca151b5
JB		 2886 * interfaces. For the other types, the bss_info changed flow
2887 * will handle quota settings.
2888 */
2889 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 2890 mvmvif->monitor_active = true;
0166230c 2891 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 2892 if (ret)
2893 goto out_remove_binding;
2894 }
2895
bd3398e2 2896 /* Handle binding during CSA */
a57c688d 2897 if (vif->type == NL80211_IFTYPE_AP) {
0166230c 2898 iwl_mvm_update_quotas(mvm, NULL);
3dfd3a97 2899 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
bd3398e2
AO		 2900 }
2901
4741dd04 2902 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
686e7fe1
LC		 2903 u32 duration = 2 * vif->bss_conf.beacon_int;
2904
2905 /* iwl_mvm_protect_session() reads directly from the
2906 * device (the system time), so make sure it is
2907 * available.
2908 */
2909 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
2910 if (ret)
2911 goto out_remove_binding;
2912
2913 /* Protect the session to make sure we hear the first
2914 * beacon on the new channel.
2915 */
2916 iwl_mvm_protect_session(mvm, vif, duration, duration,
2917 vif->bss_conf.beacon_int / 2,
2918 true);
2919
2920 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
2921
a57c688d 2922 iwl_mvm_update_quotas(mvm, NULL);
0ce04ce7
LC		 2923 }
2924
b08c1d97 2925 goto out;
8ca151b5 2926
b08c1d97 2927out_remove_binding:
8ca151b5 2928 iwl_mvm_binding_remove_vif(mvm, vif);
999609f1 2929 iwl_mvm_power_update_mac(mvm);
b08c1d97 2930out:
8ca151b5
JB		 2931 if (ret)
2932 mvmvif->phy_ctxt = NULL;
2933 return ret;
2934}
b08c1d97
LC		 2935static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2936 struct ieee80211_vif *vif,
2937 struct ieee80211_chanctx_conf *ctx)
8ca151b5
JB		 2938{
2939 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
b08c1d97 2940 int ret;
8ca151b5
JB		 2941
2942 mutex_lock(&mvm->mutex);
f0c97783 2943 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
b08c1d97
LC		 2944 mutex_unlock(&mvm->mutex);
2945
2946 return ret;
2947}
2948
2949static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2950 struct ieee80211_vif *vif,
f0c97783
LC		 2951 struct ieee80211_chanctx_conf *ctx,
2952 bool switching_chanctx)
b08c1d97
LC		 2953{
2954 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
f0c97783 2955 struct ieee80211_vif *disabled_vif = NULL;
b08c1d97
LC		 2956
2957 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 2958
2959 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2960
8ca151b5 2961 switch (vif->type) {
5023d966 2962 case NL80211_IFTYPE_ADHOC:
b08c1d97 2963 goto out;
8ca151b5 2964 case NL80211_IFTYPE_MONITOR:
1e1391ca 2965 mvmvif->monitor_active = false;
2533edce 2966 mvmvif->ps_disabled = false;
8ca151b5 2967 break;
bd3398e2
AO		 2968 case NL80211_IFTYPE_AP:
2969 /* This part is triggered only during CSA */
4741dd04 2970 if (!switching_chanctx || !mvmvif->ap_ibss_active)
b08c1d97 2971 goto out;
bd3398e2 2972
7ef0aab6
AO		 2973 mvmvif->csa_countdown = false;
2974
003e5236
AO		 2975 /* Set CS bit on all the stations */
2976 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2977
2978 /* Save blocked iface, the timeout is set on the next beacon */
2979 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2980
bd3398e2 2981 mvmvif->ap_ibss_active = false;
f0c97783
LC		 2982 break;
2983 case NL80211_IFTYPE_STATION:
2984 if (!switching_chanctx)
2985 break;
2986
2987 disabled_vif = vif;
2988
3dfd3a97 2989 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
f0c97783 2990 break;
8ca151b5
JB		 2991 default:
2992 break;
2993 }
2994
f0c97783 2995 iwl_mvm_update_quotas(mvm, disabled_vif);
1e1391ca 2996 iwl_mvm_binding_remove_vif(mvm, vif);
1c2abf72 2997
b08c1d97 2998out:
a11e144e 2999 mvmvif->phy_ctxt = NULL;
999609f1 3000 iwl_mvm_power_update_mac(mvm);
b08c1d97
LC		 3001}
3002
3003static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3004 struct ieee80211_vif *vif,
3005 struct ieee80211_chanctx_conf *ctx)
3006{
3007 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3008
3009 mutex_lock(&mvm->mutex);
f0c97783 3010 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
8ca151b5
JB		 3011 mutex_unlock(&mvm->mutex);
3012}
3013
50cc9574
LC		 3014static int
3015iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3016 struct ieee80211_vif_chanctx_switch *vifs)
b08c1d97 3017{
b08c1d97
LC		 3018 int ret;
3019
b08c1d97 3020 mutex_lock(&mvm->mutex);
f0c97783 3021 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
b08c1d97
LC		 3022 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3023
3024 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3025 if (ret) {
3026 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3027 goto out_reassign;
3028 }
3029
f0c97783
LC		 3030 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3031 true);
b08c1d97
LC		 3032 if (ret) {
3033 IWL_ERR(mvm,
3034 "failed to assign new_ctx during channel switch\n");
3035 goto out_remove;
3036 }
3037
f697267f
AN		 3038 /* we don't support TDLS during DCM - can be caused by channel switch */
3039 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3040 iwl_mvm_teardown_tdls_peers(mvm);
3041
b08c1d97
LC		 3042 goto out;
3043
3044out_remove:
3045 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3046
3047out_reassign:
6fd1fb63 3048 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
b08c1d97
LC		 3049 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3050 goto out_restart;
3051 }
3052
6fd1fb63
LC		 3053 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3054 true)) {
b08c1d97
LC		 3055 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3056 goto out_restart;
3057 }
3058
3059 goto out;
3060
3061out_restart:
3062 /* things keep failing, better restart the hw */
3063 iwl_mvm_nic_restart(mvm, false);
3064
3065out:
3066 mutex_unlock(&mvm->mutex);
50cc9574
LC		 3067
3068 return ret;
3069}
3070
48a256e8
LC		 3071static int
3072iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3073 struct ieee80211_vif_chanctx_switch *vifs)
3074{
3075 int ret;
3076
3077 mutex_lock(&mvm->mutex);
3078 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3079
3080 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3081 true);
3082 if (ret) {
3083 IWL_ERR(mvm,
3084 "failed to assign new_ctx during channel switch\n");
3085 goto out_reassign;
3086 }
3087
3088 goto out;
3089
3090out_reassign:
3091 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3092 true)) {
3093 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3094 goto out_restart;
3095 }
3096
3097 goto out;
3098
3099out_restart:
3100 /* things keep failing, better restart the hw */
3101 iwl_mvm_nic_restart(mvm, false);
3102
3103out:
3104 mutex_unlock(&mvm->mutex);
3105
3106 return ret;
3107}
3108
50cc9574
LC		 3109static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3110 struct ieee80211_vif_chanctx_switch *vifs,
3111 int n_vifs,
3112 enum ieee80211_chanctx_switch_mode mode)
3113{
3114 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3115 int ret;
3116
3117 /* we only support a single-vif right now */
3118 if (n_vifs > 1)
3119 return -EOPNOTSUPP;
3120
3121 switch (mode) {
3122 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3123 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3124 break;
3125 case CHANCTX_SWMODE_REASSIGN_VIF:
48a256e8 3126 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
50cc9574
LC		 3127 break;
3128 default:
3129 ret = -EOPNOTSUPP;
3130 break;
3131 }
3132
b08c1d97
LC		 3133 return ret;
3134}
3135
8ca151b5
JB		 3136static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3137 struct ieee80211_sta *sta,
3138 bool set)
3139{
3140 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3141 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
3142
3143 if (!mvm_sta || !mvm_sta->vif) {
3144 IWL_ERR(mvm, "Station is not associated to a vif\n");
3145 return -EINVAL;
3146 }
3147
3148 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3149}
3150
507cadf2
DS		 3151#ifdef CONFIG_NL80211_TESTMODE
3152static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3153 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3154 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
f6c6ad42 3155 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
507cadf2
DS		 3156};
3157
3158static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3159 struct ieee80211_vif *vif,
3160 void *data, int len)
3161{
3162 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3163 int err;
3164 u32 noa_duration;
3165
3166 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3167 if (err)
3168 return err;
3169
3170 if (!tb[IWL_MVM_TM_ATTR_CMD])
3171 return -EINVAL;
3172
3173 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3174 case IWL_MVM_TM_CMD_SET_NOA:
3175 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3176 !vif->bss_conf.enable_beacon ||
3177 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3178 return -EINVAL;
3179
3180 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3181 if (noa_duration >= vif->bss_conf.beacon_int)
3182 return -EINVAL;
3183
3184 mvm->noa_duration = noa_duration;
3185 mvm->noa_vif = vif;
3186
0166230c 3187 return iwl_mvm_update_quotas(mvm, NULL);
f6c6ad42
JB		 3188 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3189 /* must be associated client vif - ignore authorized */
3190 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3191 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3192 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3193 return -EINVAL;
3194
3195 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
a1022927
EG		 3196 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3197 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
507cadf2
DS		 3198 }
3199
3200 return -EOPNOTSUPP;
3201}
3202
3203static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3204 struct ieee80211_vif *vif,
3205 void *data, int len)
3206{
3207 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3208 int err;
3209
3210 mutex_lock(&mvm->mutex);
3211 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3212 mutex_unlock(&mvm->mutex);
3213
3214 return err;
3215}
3216#endif
3217
622e3f9b
LC		 3218static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3219 struct ieee80211_vif *vif,
3220 struct ieee80211_channel_switch *chsw)
3221{
3222 /* By implementing this operation, we prevent mac80211 from
3223 * starting its own channel switch timer, so that we can call
3224 * ieee80211_chswitch_done() ourselves at the right time
3225 * (which is when the absence time event starts).
3226 */
3227
3228 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3229 "dummy channel switch op\n");
3230}
3231
f028905c
LC		 3232static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3233 struct ieee80211_vif *vif,
3234 struct ieee80211_channel_switch *chsw)
bd3398e2
AO		 3235{
3236 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
664322fa 3237 struct ieee80211_vif *csa_vif;
f6c34820 3238 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
dc88b4ba 3239 u32 apply_time;
f028905c 3240 int ret;
bd3398e2
AO		 3241
3242 mutex_lock(&mvm->mutex);
664322fa 3243
6b20d774 3244 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
f028905c 3245 chsw->chandef.center_freq1);
6b20d774
LC		 3246
3247 switch (vif->type) {
3248 case NL80211_IFTYPE_AP:
3249 csa_vif =
3250 rcu_dereference_protected(mvm->csa_vif,
3251 lockdep_is_held(&mvm->mutex));
3252 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3253 "Another CSA is already in progress")) {
3254 ret = -EBUSY;
3255 goto out_unlock;
3256 }
3257
3258 rcu_assign_pointer(mvm->csa_vif, vif);
7ef0aab6 3259
7ef0aab6
AO		 3260 if (WARN_ONCE(mvmvif->csa_countdown,
3261 "Previous CSA countdown didn't complete")) {
3262 ret = -EBUSY;
3263 goto out_unlock;
3264 }
3265
6b20d774 3266 break;
dc88b4ba 3267 case NL80211_IFTYPE_STATION:
4500e133
LC		 3268 /* Schedule the time event to a bit before beacon 1,
3269 * to make sure we're in the new channel when the
3270 * GO/AP arrives.
3271 */
3272 apply_time = chsw->device_timestamp +
3273 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3274 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
dc88b4ba
LC		 3275
3276 if (chsw->block_tx)
3277 iwl_mvm_csa_client_absent(mvm, vif);
3278
4500e133 3279 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
dc88b4ba 3280 apply_time);
c6e0a3e0
LC		 3281 if (mvmvif->bf_data.bf_enabled) {
3282 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3283 if (ret)
3284 goto out_unlock;
3285 }
3286
dc88b4ba 3287 break;
6b20d774
LC		 3288 default:
3289 break;
3290 }
bd3398e2 3291
f6c34820
LC		 3292 mvmvif->ps_disabled = true;
3293
3294 ret = iwl_mvm_power_update_ps(mvm);
3295 if (ret)
3296 goto out_unlock;
f028905c 3297
e198f5e7
AN		 3298 /* we won't be on this channel any longer */
3299 iwl_mvm_teardown_tdls_peers(mvm);
3300
bd3398e2
AO		 3301out_unlock:
3302 mutex_unlock(&mvm->mutex);
f028905c
LC		 3303
3304 return ret;
bd3398e2
AO		 3305}
3306
f6c34820
LC		 3307static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3308 struct ieee80211_vif *vif)
3309{
3310 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3311 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3312 int ret;
3313
3314 mutex_lock(&mvm->mutex);
3315
a57c688d
LC		 3316 if (vif->type == NL80211_IFTYPE_STATION) {
3317 struct iwl_mvm_sta *mvmsta;
3318
3319 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3320 mvmvif->ap_sta_id);
3321
3322 if (WARN_ON(!mvmsta)) {
3323 ret = -EIO;
3324 goto out_unlock;
3325 }
3326
3327 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3328
3329 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
c6e0a3e0
LC		 3330
3331 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3332 if (ret)
3333 goto out_unlock;
686e7fe1
LC		 3334
3335 iwl_mvm_stop_session_protection(mvm, vif);
a57c688d
LC		 3336 }
3337
f6c34820
LC		 3338 mvmvif->ps_disabled = false;
3339
3340 ret = iwl_mvm_power_update_ps(mvm);
3341
a57c688d 3342out_unlock:
f6c34820
LC		 3343 mutex_unlock(&mvm->mutex);
3344
3345 return ret;
3346}
3347
c5b0e7c0
EG		 3348static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3349 struct ieee80211_vif *vif, u32 queues, bool drop)
3350{
3351 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3352 struct iwl_mvm_vif *mvmvif;
3353 struct iwl_mvm_sta *mvmsta;
a0f6bf2a
AN		 3354 struct ieee80211_sta *sta;
3355 int i;
3356 u32 msk = 0;
c5b0e7c0
EG		 3357
3358 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3359 return;
3360
3361 mutex_lock(&mvm->mutex);
3362 mvmvif = iwl_mvm_vif_from_mac80211(vif);
c5b0e7c0 3363
a0f6bf2a
AN		 3364 /* flush the AP-station and all TDLS peers */
3365 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3366 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3367 lockdep_is_held(&mvm->mutex));
3368 if (IS_ERR_OR_NULL(sta))
3369 continue;
3370
3371 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3372 if (mvmsta->vif != vif)
3373 continue;
3374
3375 /* make sure only TDLS peers or the AP are flushed */
3376 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3377
3378 msk |= mvmsta->tfd_queue_msk;
480acbce 3379 }
c5b0e7c0
EG		 3380
3381 if (drop) {
a0f6bf2a 3382 if (iwl_mvm_flush_tx_path(mvm, msk, true))
c5b0e7c0 3383 IWL_ERR(mvm, "flush request fail\n");
480acbce 3384 mutex_unlock(&mvm->mutex);
c5b0e7c0 3385 } else {
480acbce
JB		 3386 mutex_unlock(&mvm->mutex);
3387
3388 /* this can take a while, and we may need/want other operations
3389 * to succeed while doing this, so do it without the mutex held
3390 */
a0f6bf2a 3391 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
c5b0e7c0 3392 }
c5b0e7c0
EG		 3393}
3394
e5209263 3395const struct ieee80211_ops iwl_mvm_hw_ops = {
8ca151b5
JB		 3396 .tx = iwl_mvm_mac_tx,
3397 .ampdu_action = iwl_mvm_mac_ampdu_action,
3398 .start = iwl_mvm_mac_start,
cf2c92d8 3399 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
8ca151b5
JB		 3400 .stop = iwl_mvm_mac_stop,
3401 .add_interface = iwl_mvm_mac_add_interface,
3402 .remove_interface = iwl_mvm_mac_remove_interface,
3403 .config = iwl_mvm_mac_config,
e59647ea 3404 .prepare_multicast = iwl_mvm_prepare_multicast,
8ca151b5
JB		 3405 .configure_filter = iwl_mvm_configure_filter,
3406 .bss_info_changed = iwl_mvm_bss_info_changed,
3407 .hw_scan = iwl_mvm_mac_hw_scan,
3408 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1ddbbb0c 3409 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
8ca151b5
JB		 3410 .sta_state = iwl_mvm_mac_sta_state,
3411 .sta_notify = iwl_mvm_mac_sta_notify,
3412 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3e56eadf 3413 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
8ca151b5 3414 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1f3b0ff8 3415 .sta_rc_update = iwl_mvm_sta_rc_update,
8ca151b5
JB		 3416 .conf_tx = iwl_mvm_mac_conf_tx,
3417 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
07ecd897 3418 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
c5b0e7c0 3419 .flush = iwl_mvm_mac_flush,
35a000b7
DS		 3420 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3421 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
8ca151b5
JB		 3422 .set_key = iwl_mvm_mac_set_key,
3423 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3424 .remain_on_channel = iwl_mvm_roc,
3425 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
8ca151b5
JB		 3426 .add_chanctx = iwl_mvm_add_chanctx,
3427 .remove_chanctx = iwl_mvm_remove_chanctx,
3428 .change_chanctx = iwl_mvm_change_chanctx,
3429 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3430 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
b08c1d97 3431 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
8ca151b5 3432
5023d966
JB		 3433 .start_ap = iwl_mvm_start_ap_ibss,
3434 .stop_ap = iwl_mvm_stop_ap_ibss,
3435 .join_ibss = iwl_mvm_start_ap_ibss,
3436 .leave_ibss = iwl_mvm_stop_ap_ibss,
8ca151b5
JB		 3437
3438 .set_tim = iwl_mvm_set_tim,
3439
622e3f9b 3440 .channel_switch = iwl_mvm_channel_switch,
f028905c 3441 .pre_channel_switch = iwl_mvm_pre_channel_switch,
f6c34820 3442 .post_channel_switch = iwl_mvm_post_channel_switch,
bd3398e2 3443
1d3c3f63
AN		 3444 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3445 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3446 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3447
507cadf2
DS		 3448 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3449
8ca151b5
JB		 3450#ifdef CONFIG_PM_SLEEP
3451 /* look at d3.c */
3452 .suspend = iwl_mvm_suspend,
3453 .resume = iwl_mvm_resume,
3454 .set_wakeup = iwl_mvm_set_wakeup,
3455 .set_rekey_data = iwl_mvm_set_rekey_data,
3456#if IS_ENABLED(CONFIG_IPV6)
3457 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3458#endif
3459 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3460#endif
3461};
A mirror of Linus' kernel repository