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iwlwifi: mvm: BT Coex - don't change AP SMPS mode
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
CommitLineData
8ca151b5
JB		 1/******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
51368bf7 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8ca151b5
JB		 9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
410dc5aa 25 * in the file called COPYING.
8ca151b5
JB		 26 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
51368bf7 33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8ca151b5
JB		 34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63#include <linux/kernel.h>
64#include <linux/slab.h>
65#include <linux/skbuff.h>
66#include <linux/netdevice.h>
67#include <linux/etherdevice.h>
f0c2646a 68#include <linux/ip.h>
2ee8f021 69#include <linux/if_arp.h>
8ca151b5 70#include <net/mac80211.h>
7b1dd048 71#include <net/ieee80211_radiotap.h>
f0c2646a 72#include <net/tcp.h>
8ca151b5
JB		 73
74#include "iwl-op-mode.h"
75#include "iwl-io.h"
76#include "mvm.h"
77#include "sta.h"
78#include "time-event.h"
79#include "iwl-eeprom-parse.h"
80#include "fw-api-scan.h"
81#include "iwl-phy-db.h"
507cadf2 82#include "testmode.h"
655e6d6d
EG		 83#include "iwl-fw-error-dump.h"
84#include "iwl-prph.h"
8ca151b5
JB		 85
86static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
87 {
88 .max = 1,
8eb38710 89 .types = BIT(NL80211_IFTYPE_STATION),
8ca151b5 90 },
3c15a0fb
JB		 91 {
92 .max = 1,
8eb38710
IP		 93 .types = BIT(NL80211_IFTYPE_AP) |
94 BIT(NL80211_IFTYPE_P2P_CLIENT) |
3c15a0fb
JB		 95 BIT(NL80211_IFTYPE_P2P_GO),
96 },
97 {
98 .max = 1,
99 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
100 },
8ca151b5
JB		 101};
102
103static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
104 {
105 .num_different_channels = 1,
106 .max_interfaces = 3,
107 .limits = iwl_mvm_limits,
108 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
109 },
110};
111
f0c2646a
JB		 112#ifdef CONFIG_PM_SLEEP
113static const struct nl80211_wowlan_tcp_data_token_feature
114iwl_mvm_wowlan_tcp_token_feature = {
115 .min_len = 0,
116 .max_len = 255,
117 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
118};
119
120static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
121 .tok = &iwl_mvm_wowlan_tcp_token_feature,
122 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
123 sizeof(struct ethhdr) -
124 sizeof(struct iphdr) -
125 sizeof(struct tcphdr),
126 .data_interval_max = 65535, /* __le16 in API */
127 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
128 sizeof(struct ethhdr) -
129 sizeof(struct iphdr) -
130 sizeof(struct tcphdr),
131 .seq = true,
132};
133#endif
134
77736923 135#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
2ee8f021
EP		 136/*
137 * Use the reserved field to indicate magic values.
138 * these values will only be used internally by the driver,
139 * and won't make it to the fw (reserved will be 0).
140 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
141 * be the vif's ip address. in case there is not a single
142 * ip address (0, or more than 1), this attribute will
143 * be skipped.
144 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
145 * the LSB bytes of the vif's mac address
146 */
147enum {
148 BC_FILTER_MAGIC_NONE = 0,
149 BC_FILTER_MAGIC_IP,
150 BC_FILTER_MAGIC_MAC,
151};
152
77736923
EP		 153static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
154 {
155 /* arp */
156 .discard = 0,
157 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
158 .attrs = {
159 {
160 /* frame type - arp, hw type - ethernet */
161 .offset_type =
162 BCAST_FILTER_OFFSET_PAYLOAD_START,
163 .offset = sizeof(rfc1042_header),
164 .val = cpu_to_be32(0x08060001),
165 .mask = cpu_to_be32(0xffffffff),
166 },
2ee8f021
EP		 167 {
168 /* arp dest ip */
169 .offset_type =
170 BCAST_FILTER_OFFSET_PAYLOAD_START,
171 .offset = sizeof(rfc1042_header) + 2 +
172 sizeof(struct arphdr) +
173 ETH_ALEN + sizeof(__be32) +
174 ETH_ALEN,
175 .mask = cpu_to_be32(0xffffffff),
176 /* mark it as special field */
177 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
178 },
179 },
180 },
181 {
182 /* dhcp offer bcast */
183 .discard = 0,
184 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
185 .attrs = {
186 {
187 /* udp dest port - 68 (bootp client)*/
188 .offset_type = BCAST_FILTER_OFFSET_IP_END,
189 .offset = offsetof(struct udphdr, dest),
190 .val = cpu_to_be32(0x00440000),
191 .mask = cpu_to_be32(0xffff0000),
192 },
193 {
194 /* dhcp - lsb bytes of client hw address */
195 .offset_type = BCAST_FILTER_OFFSET_IP_END,
196 .offset = 38,
197 .mask = cpu_to_be32(0xffffffff),
198 /* mark it as special field */
199 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
200 },
77736923
EP		 201 },
202 },
203 /* last filter must be empty */
204 {},
205};
206#endif
207
7498cf4c
EP		 208void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
209{
7bb426ea 210 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 211 return;
212
213 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
576eeee9
EP		 214 spin_lock_bh(&mvm->refs_lock);
215 mvm->refs[ref_type]++;
216 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 217 iwl_trans_ref(mvm->trans);
218}
219
220void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
221{
7bb426ea 222 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 223 return;
224
225 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
576eeee9
EP		 226 spin_lock_bh(&mvm->refs_lock);
227 WARN_ON(!mvm->refs[ref_type]--);
228 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 229 iwl_trans_unref(mvm->trans);
230}
231
576eeee9
EP		 232static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
233 enum iwl_mvm_ref_type except_ref)
7498cf4c 234{
576eeee9 235 int i, j;
7498cf4c 236
7bb426ea 237 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 238 return;
239
576eeee9
EP		 240 spin_lock_bh(&mvm->refs_lock);
241 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
242 if (except_ref == i || !mvm->refs[i])
7498cf4c
EP		 243 continue;
244
576eeee9
EP		 245 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
246 i, mvm->refs[i]);
247 for (j = 0; j < mvm->refs[i]; j++)
248 iwl_trans_unref(mvm->trans);
249 mvm->refs[i] = 0;
7498cf4c 250 }
576eeee9 251 spin_unlock_bh(&mvm->refs_lock);
7498cf4c
EP		 252}
253
576eeee9 254int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
d40fc489
GG		 255{
256 iwl_mvm_ref(mvm, ref_type);
257
258 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
259 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
260 HZ)) {
261 WARN_ON_ONCE(1);
262 iwl_mvm_unref(mvm, ref_type);
263 return -EIO;
264 }
265
266 return 0;
267}
268
fe0f2de3
IP		 269static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
270{
271 int i;
272
273 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
274 for (i = 0; i < NUM_PHY_CTX; i++) {
275 mvm->phy_ctxts[i].id = i;
276 mvm->phy_ctxts[i].ref = 0;
277 }
278}
279
20f1a5de
DS		 280static int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
281{
282 /* we create the 802.11 header and SSID element */
283 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID)
284 return mvm->fw->ucode_capa.max_probe_length - 24 - 2;
285 return mvm->fw->ucode_capa.max_probe_length - 24 - 34;
286}
287
8ca151b5
JB		 288int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
289{
290 struct ieee80211_hw *hw = mvm->hw;
831e85f3 291 int num_mac, ret, i;
8ca151b5
JB		 292
293 /* Tell mac80211 our characteristics */
294 hw->flags = IEEE80211_HW_SIGNAL_DBM |
295 IEEE80211_HW_SPECTRUM_MGMT |
296 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
297 IEEE80211_HW_QUEUE_CONTROL |
298 IEEE80211_HW_WANT_MONITOR_VIF |
8ca151b5
JB		 299 IEEE80211_HW_SUPPORTS_PS |
300 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
d2931bbd 301 IEEE80211_HW_AMPDU_AGGREGATION |
d64048ed 302 IEEE80211_HW_TIMING_BEACON_ONLY |
147fc9be 303 IEEE80211_HW_CONNECTION_MONITOR |
f0c97783 304 IEEE80211_HW_CHANCTX_STA_CSA |
147fc9be 305 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
e8e626ad 306 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
8ca151b5 307
19e737c9 308 hw->queues = mvm->first_agg_queue;
398e8c6c 309 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
7b1dd048
EG		 310 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
311 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
312 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
8ca151b5
JB		 313 hw->rate_control_algorithm = "iwl-mvm-rs";
314
315 /*
316 * Enable 11w if advertised by firmware and software crypto
317 * is not enabled (as the firmware will interpret some mgmt
318 * packets, so enabling it with software crypto isn't safe)
319 */
320 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
321 !iwlwifi_mod_params.sw_crypto)
322 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
323
1504f48d
MC		 324 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
325 IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 &&
326 !iwlwifi_mod_params.uapsd_disable) {
327 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
328 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
329 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
330 }
e8e626ad 331
a42c9fcc
AN		 332 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
333 !iwlwifi_mod_params.uapsd_disable) {
334 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
335 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
336 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
337 }
e8e626ad 338
fb98be5e
DS		 339 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
340 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
341
8ca151b5
JB		 342 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
343 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
fe0f2de3 344 hw->chanctx_data_size = sizeof(u16);
8ca151b5
JB		 345
346 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3c15a0fb
JB		 347 BIT(NL80211_IFTYPE_P2P_CLIENT) |
348 BIT(NL80211_IFTYPE_AP) |
349 BIT(NL80211_IFTYPE_P2P_GO) |
c13b1725
EG		 350 BIT(NL80211_IFTYPE_P2P_DEVICE) |
351 BIT(NL80211_IFTYPE_ADHOC);
5023d966 352
a2f73b6c
LR		 353 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
354 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
355 REGULATORY_DISABLE_BEACON_HINTS;
8ca151b5 356
3e56eadf
JB		 357 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
358 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
359
bd3398e2
AO		 360 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW)
361 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
362
8ca151b5
JB		 363 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
364 hw->wiphy->n_iface_combinations =
365 ARRAY_SIZE(iwl_mvm_iface_combinations);
366
c451e6d4 367 hw->wiphy->max_remain_on_channel_duration = 10000;
8ca151b5
JB		 368 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
369
370 /* Extract MAC address */
371 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
372 hw->wiphy->addresses = mvm->addresses;
373 hw->wiphy->n_addresses = 1;
831e85f3
IP		 374
375 /* Extract additional MAC addresses if available */
376 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
377 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
378
379 for (i = 1; i < num_mac; i++) {
380 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
8ca151b5 381 ETH_ALEN);
831e85f3 382 mvm->addresses[i].addr[5]++;
8ca151b5
JB		 383 hw->wiphy->n_addresses++;
384 }
385
fe0f2de3
IP		 386 iwl_mvm_reset_phy_ctxts(mvm);
387
20f1a5de
DS		 388 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
389
8ca151b5
JB		 390 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
391
392 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
393 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
394 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
395 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
396 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
397 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
398
399 hw->wiphy->hw_version = mvm->trans->hw_id;
400
ade50652 401 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
8ca151b5
JB		 402 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
403 else
404 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
405
536a3eee
EG		 406 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
407 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
408 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
409 /* we create the 802.11 header and zero length SSID IE. */
410 hw->wiphy->max_sched_scan_ie_len = SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
35a000b7 411
8ca151b5 412 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
ab480030 413 NL80211_FEATURE_LOW_PRIORITY_SCAN |
8a110d9b 414 NL80211_FEATURE_P2P_GO_OPPPS;
8ca151b5
JB		 415
416 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
417
e36e5433 418 /* currently FW API supports only one optional cipher scheme */
9ddca860 419 if (mvm->fw->cs[0].cipher) {
e36e5433 420 mvm->hw->n_cipher_schemes = 1;
9ddca860 421 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
e36e5433
MS		 422 }
423
8ca151b5 424#ifdef CONFIG_PM_SLEEP
d15a747f
EP		 425 if (iwl_mvm_is_d0i3_supported(mvm) &&
426 device_can_wakeup(mvm->trans->dev)) {
427 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
428 hw->wiphy->wowlan = &mvm->wowlan;
429 } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
8ca151b5
JB		 430 mvm->trans->ops->d3_suspend &&
431 mvm->trans->ops->d3_resume &&
432 device_can_wakeup(mvm->trans->dev)) {
964dc9e2
JB		 433 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
434 WIPHY_WOWLAN_DISCONNECT |
435 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
436 WIPHY_WOWLAN_RFKILL_RELEASE;
8ca151b5 437 if (!iwlwifi_mod_params.sw_crypto)
964dc9e2
JB		 438 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
439 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
440 WIPHY_WOWLAN_4WAY_HANDSHAKE;
441
442 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
443 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
444 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
445 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
446 hw->wiphy->wowlan = &mvm->wowlan;
8ca151b5
JB		 447 }
448#endif
449
77736923
EP		 450#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
451 /* assign default bcast filtering configuration */
452 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
453#endif
454
8ca151b5
JB		 455 ret = iwl_mvm_leds_init(mvm);
456 if (ret)
457 return ret;
458
b7327d89
EG		 459 ret = ieee80211_register_hw(mvm->hw);
460 if (ret)
461 iwl_mvm_leds_exit(mvm);
462
463 return ret;
8ca151b5
JB		 464}
465
b2492501
AN		 466static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
467 struct ieee80211_sta *sta,
468 struct sk_buff *skb)
469{
470 struct iwl_mvm_sta *mvmsta;
471 bool defer = false;
472
473 /*
474 * double check the IN_D0I3 flag both before and after
475 * taking the spinlock, in order to prevent taking
476 * the spinlock when not needed.
477 */
478 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
479 return false;
480
481 spin_lock(&mvm->d0i3_tx_lock);
482 /*
483 * testing the flag again ensures the skb dequeue
484 * loop (on d0i3 exit) hasn't run yet.
485 */
486 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
487 goto out;
488
489 mvmsta = iwl_mvm_sta_from_mac80211(sta);
490 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
491 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
492 goto out;
493
494 __skb_queue_tail(&mvm->d0i3_tx, skb);
495 ieee80211_stop_queues(mvm->hw);
496
497 /* trigger wakeup */
498 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
499 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
500
501 defer = true;
502out:
503 spin_unlock(&mvm->d0i3_tx_lock);
504 return defer;
505}
506
8ca151b5
JB		 507static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
508 struct ieee80211_tx_control *control,
509 struct sk_buff *skb)
510{
511 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3e56eadf
JB		 512 struct ieee80211_sta *sta = control->sta;
513 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
514 struct ieee80211_hdr *hdr = (void *)skb->data;
8ca151b5 515
9ee718aa
EL		 516 if (iwl_mvm_is_radio_killed(mvm)) {
517 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
8ca151b5
JB		 518 goto drop;
519 }
520
398e8c6c 521 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
8ca151b5
JB		 522 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
523 goto drop;
524
3e56eadf
JB		 525 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
526 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
527 ieee80211_is_mgmt(hdr->frame_control) &&
528 !ieee80211_is_deauth(hdr->frame_control) &&
529 !ieee80211_is_disassoc(hdr->frame_control) &&
530 !ieee80211_is_action(hdr->frame_control)))
531 sta = NULL;
532
533 if (sta) {
b2492501
AN		 534 if (iwl_mvm_defer_tx(mvm, sta, skb))
535 return;
3e56eadf 536 if (iwl_mvm_tx_skb(mvm, skb, sta))
8ca151b5
JB		 537 goto drop;
538 return;
539 }
540
541 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
542 goto drop;
543 return;
544 drop:
545 ieee80211_free_txskb(hw, skb);
546}
547
205e2210
EG		 548static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
549{
550 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
551 return false;
552 return true;
553}
554
555static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
556{
557 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
558 return false;
559 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
560 return true;
561
562 /* enabled by default */
563 return true;
564}
565
8ca151b5
JB		 566static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
567 struct ieee80211_vif *vif,
568 enum ieee80211_ampdu_mlme_action action,
569 struct ieee80211_sta *sta, u16 tid,
570 u16 *ssn, u8 buf_size)
571{
572 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
573 int ret;
b2492501 574 bool tx_agg_ref = false;
8ca151b5
JB		 575
576 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
577 sta->addr, tid, action);
578
579 if (!(mvm->nvm_data->sku_cap_11n_enable))
580 return -EACCES;
581
b2492501 582 /* return from D0i3 before starting a new Tx aggregation */
9256c205
EP		 583 switch (action) {
584 case IEEE80211_AMPDU_TX_START:
585 case IEEE80211_AMPDU_TX_STOP_CONT:
586 case IEEE80211_AMPDU_TX_STOP_FLUSH:
587 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
588 case IEEE80211_AMPDU_TX_OPERATIONAL:
b2492501 589 /*
9256c205
EP		 590 * for tx start, wait synchronously until D0i3 exit to
591 * get the correct sequence number for the tid.
592 * additionally, some other ampdu actions use direct
593 * target access, which is not handled automatically
594 * by the trans layer (unlike commands), so wait for
595 * d0i3 exit in these cases as well.
b2492501 596 */
d40fc489
GG		 597 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
598 if (ret)
599 return ret;
600
601 tx_agg_ref = true;
9256c205
EP		 602 break;
603 default:
604 break;
b2492501
AN		 605 }
606
8ca151b5
JB		 607 mutex_lock(&mvm->mutex);
608
609 switch (action) {
610 case IEEE80211_AMPDU_RX_START:
205e2210 611 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
8ca151b5
JB		 612 ret = -EINVAL;
613 break;
614 }
615 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
616 break;
617 case IEEE80211_AMPDU_RX_STOP:
618 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
619 break;
620 case IEEE80211_AMPDU_TX_START:
205e2210 621 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
5d158efa
EG		 622 ret = -EINVAL;
623 break;
624 }
8ca151b5
JB		 625 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
626 break;
627 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 628 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
629 break;
8ca151b5
JB		 630 case IEEE80211_AMPDU_TX_STOP_FLUSH:
631 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 632 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 633 break;
634 case IEEE80211_AMPDU_TX_OPERATIONAL:
635 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
636 break;
637 default:
638 WARN_ON_ONCE(1);
639 ret = -EINVAL;
640 break;
641 }
642 mutex_unlock(&mvm->mutex);
643
b2492501
AN		 644 /*
645 * If the tid is marked as started, we won't use it for offloaded
646 * traffic on the next D0i3 entry. It's safe to unref.
647 */
648 if (tx_agg_ref)
649 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
650
8ca151b5
JB		 651 return ret;
652}
653
654static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
655 struct ieee80211_vif *vif)
656{
657 struct iwl_mvm *mvm = data;
658 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
659
660 mvmvif->uploaded = false;
661 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
662
663 /* does this make sense at all? */
664 mvmvif->color++;
665
666 spin_lock_bh(&mvm->time_event_lock);
667 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
668 spin_unlock_bh(&mvm->time_event_lock);
669
fe0f2de3 670 mvmvif->phy_ctxt = NULL;
8ca151b5
JB		 671}
672
655e6d6d
EG		 673#ifdef CONFIG_IWLWIFI_DEBUGFS
674static void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
675{
676 struct iwl_fw_error_dump_file *dump_file;
677 struct iwl_fw_error_dump_data *dump_data;
678 struct iwl_fw_error_dump_info *dump_info;
679 const struct fw_img *img;
680 u32 sram_len, sram_ofs;
681 u32 file_len, rxf_len;
682 unsigned long flags;
683 u32 trans_len;
684 int reg_val;
685
686 lockdep_assert_held(&mvm->mutex);
687
688 if (mvm->fw_error_dump)
689 return;
690
691 img = &mvm->fw->img[mvm->cur_ucode];
692 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
693 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
694
695 /* reading buffer size */
696 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
697 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
698
699 /* the register holds the value divided by 128 */
700 rxf_len = rxf_len << 7;
701
702 file_len = sizeof(*dump_file) +
703 sizeof(*dump_data) * 3 +
704 sram_len +
705 rxf_len +
706 sizeof(*dump_info);
707
708 trans_len = iwl_trans_dump_data(mvm->trans, NULL, 0);
709 if (trans_len)
710 file_len += trans_len;
711
5bfe6f53 712 dump_file = vzalloc(file_len);
655e6d6d
EG		 713 if (!dump_file)
714 return;
715
716 mvm->fw_error_dump = dump_file;
717
718 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
719 dump_file->file_len = cpu_to_le32(file_len);
720 dump_data = (void *)dump_file->data;
721
722 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
723 dump_data->len = cpu_to_le32(sizeof(*dump_info));
724 dump_info = (void *) dump_data->data;
725 dump_info->device_family =
726 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
727 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
728 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
729 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
730 sizeof(dump_info->fw_human_readable));
731 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
732 sizeof(dump_info->dev_human_readable));
733 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
734 sizeof(dump_info->bus_human_readable));
735
736 dump_data = iwl_fw_error_next_data(dump_data);
737 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
738 dump_data->len = cpu_to_le32(rxf_len);
739
740 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
741 u32 *rxf = (void *)dump_data->data;
742 int i;
743
744 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
745 iwl_trans_write_prph(mvm->trans,
746 RXF_LD_FENCE_OFFSET_ADDR,
747 i * sizeof(u32));
748 rxf[i] = iwl_trans_read_prph(mvm->trans,
749 RXF_FIFO_RD_FENCE_ADDR);
750 }
751 iwl_trans_release_nic_access(mvm->trans, &flags);
752 }
753
754 dump_data = iwl_fw_error_next_data(dump_data);
755 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
756 dump_data->len = cpu_to_le32(sram_len);
757 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
758 sram_len);
759
760 if (trans_len) {
761 void *buf = iwl_fw_error_next_data(dump_data);
762 u32 real_trans_len = iwl_trans_dump_data(mvm->trans, buf,
763 trans_len);
764 dump_data = (void *)((u8 *)buf + real_trans_len);
765 dump_file->file_len =
766 cpu_to_le32(file_len - trans_len + real_trans_len);
767 }
768}
769#endif
770
8ca151b5
JB		 771static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
772{
1bd3cbc1
EG		 773#ifdef CONFIG_IWLWIFI_DEBUGFS
774 static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL };
775
776 iwl_mvm_fw_error_dump(mvm);
777
778 /* notify the userspace about the error we had */
779 kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env);
780#endif
781
8ca151b5 782 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 783
784 mvm->scan_status = IWL_MVM_SCAN_NONE;
785
786 /* just in case one was running */
787 ieee80211_remain_on_channel_expired(mvm->hw);
788
789 ieee80211_iterate_active_interfaces_atomic(
790 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
791 iwl_mvm_cleanup_iterator, mvm);
792
fe0f2de3 793 mvm->p2p_device_vif = NULL;
37577fe2 794 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
fe0f2de3
IP		 795
796 iwl_mvm_reset_phy_ctxts(mvm);
8ca151b5
JB		 797 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
798 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
799
800 ieee80211_wake_queues(mvm->hw);
801
7498cf4c
EP		 802 /* cleanup all stale references (scan, roc), but keep the
803 * ucode_down ref until reconfig is complete */
804 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
805
8ca151b5 806 mvm->vif_count = 0;
113a0447 807 mvm->rx_ba_sessions = 0;
8ca151b5
JB		 808}
809
810static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
811{
812 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
813 int ret;
814
815 mutex_lock(&mvm->mutex);
816
817 /* Clean up some internal and mac80211 state on restart */
818 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
819 iwl_mvm_restart_cleanup(mvm);
820
821 ret = iwl_mvm_up(mvm);
c47af22a
JB		 822
823 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
824 /* Something went wrong - we need to finish some cleanup
825 * that normally iwl_mvm_mac_restart_complete() below
826 * would do.
827 */
828 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
829 iwl_mvm_d0i3_enable_tx(mvm, NULL);
830 }
831
8ca151b5
JB		 832 mutex_unlock(&mvm->mutex);
833
834 return ret;
835}
836
837static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
838{
839 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
840 int ret;
841
842 mutex_lock(&mvm->mutex);
843
844 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
b2492501 845 iwl_mvm_d0i3_enable_tx(mvm, NULL);
0166230c 846 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 847 if (ret)
848 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
849 ret);
850
7498cf4c
EP		 851 /* allow transport/FW low power modes */
852 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
853
8ca151b5
JB		 854 mutex_unlock(&mvm->mutex);
855}
856
857static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
858{
859 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
860
37577fe2 861 flush_work(&mvm->d0i3_exit_work);
8ca151b5
JB		 862 flush_work(&mvm->async_handlers_wk);
863
864 mutex_lock(&mvm->mutex);
7498cf4c
EP		 865
866 /* disallow low power states when the FW is down */
867 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
868
8ca151b5
JB		 869 /* async_handlers_wk is now blocked */
870
871 /*
872 * The work item could be running or queued if the
873 * ROC time event stops just as we get here.
874 */
875 cancel_work_sync(&mvm->roc_done_wk);
876
877 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 878
879 iwl_mvm_async_handlers_purge(mvm);
880 /* async_handlers_list is empty and will stay empty: HW is stopped */
881
882 /* the fw is stopped, the aux sta is dead: clean up driver state */
883 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
884
885 mutex_unlock(&mvm->mutex);
886
887 /*
888 * The worker might have been waiting for the mutex, let it run and
889 * discover that its list is now empty.
890 */
891 cancel_work_sync(&mvm->async_handlers_wk);
892}
893
fe0f2de3
IP		 894static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
895{
896 u16 i;
897
898 lockdep_assert_held(&mvm->mutex);
899
900 for (i = 0; i < NUM_PHY_CTX; i++)
901 if (!mvm->phy_ctxts[i].ref)
902 return &mvm->phy_ctxts[i];
903
904 IWL_ERR(mvm, "No available PHY context\n");
905 return NULL;
906}
907
ee9c6cb0
EG		 908static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
909 s8 tx_power)
910{
911 /* FW is in charge of regulatory enforcement */
912 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
913 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
914 .pwr_restriction = cpu_to_le16(tx_power),
915 };
916
a1022927 917 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
ee9c6cb0
EG		 918 sizeof(reduce_txpwr_cmd),
919 &reduce_txpwr_cmd);
920}
921
8ca151b5
JB		 922static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
923 struct ieee80211_vif *vif)
924{
925 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
926 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
927 int ret;
928
d40fc489
GG		 929 /*
930 * make sure D0i3 exit is completed, otherwise a target access
931 * during tx queue configuration could be done when still in
932 * D0i3 state.
933 */
934 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
935 if (ret)
936 return ret;
937
8ca151b5
JB		 938 /*
939 * Not much to do here. The stack will not allow interface
940 * types or combinations that we didn't advertise, so we
941 * don't really have to check the types.
942 */
943
944 mutex_lock(&mvm->mutex);
945
e89044d7 946 /* Allocate resources for the MAC context, and add it to the fw */
8ca151b5
JB		 947 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
948 if (ret)
949 goto out_unlock;
950
1c2abf72 951 /* Counting number of interfaces is needed for legacy PM */
ea183d02
IP		 952 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
953 mvm->vif_count++;
ea183d02 954
8ca151b5
JB		 955 /*
956 * The AP binding flow can be done only after the beacon
957 * template is configured (which happens only in the mac80211
958 * start_ap() flow), and adding the broadcast station can happen
959 * only after the binding.
960 * In addition, since modifying the MAC before adding a bcast
961 * station is not allowed by the FW, delay the adding of MAC context to
962 * the point where we can also add the bcast station.
963 * In short: there's not much we can do at this point, other than
964 * allocating resources :)
965 */
5023d966
JB		 966 if (vif->type == NL80211_IFTYPE_AP ||
967 vif->type == NL80211_IFTYPE_ADHOC) {
8ca151b5
JB		 968 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
969 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
b92e661b
EP		 970 qmask,
971 ieee80211_vif_type_p2p(vif));
8ca151b5
JB		 972 if (ret) {
973 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
974 goto out_release;
975 }
976
77740cb4 977 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 978 goto out_unlock;
979 }
980
8ca151b5
JB		 981 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
982 if (ret)
983 goto out_release;
984
999609f1 985 ret = iwl_mvm_power_update_mac(mvm);
e5e7aa8e
EG		 986 if (ret)
987 goto out_release;
8ca151b5 988
7df15b1e 989 /* beacon filtering */
a1022927 990 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
bd3351ba
EP		 991 if (ret)
992 goto out_remove_mac;
993
7df15b1e 994 if (!mvm->bf_allowed_vif &&
73e5f2c5 995 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
7df15b1e 996 mvm->bf_allowed_vif = mvmvif;
a20fd398
AO		 997 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
998 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
7df15b1e
HG		 999 }
1000
8ca151b5
JB		 1001 /*
1002 * P2P_DEVICE interface does not have a channel context assigned to it,
1003 * so a dedicated PHY context is allocated to it and the corresponding
1004 * MAC context is bound to it at this stage.
1005 */
1006 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 1007
fe0f2de3
IP		 1008 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1009 if (!mvmvif->phy_ctxt) {
1010 ret = -ENOSPC;
bd3351ba 1011 goto out_free_bf;
fe0f2de3 1012 }
8ca151b5 1013
53a9d61e 1014 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1015 ret = iwl_mvm_binding_add_vif(mvm, vif);
1016 if (ret)
53a9d61e 1017 goto out_unref_phy;
8ca151b5
JB		 1018
1019 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1020 if (ret)
1021 goto out_unbind;
1022
1023 /* Save a pointer to p2p device vif, so it can later be used to
1024 * update the p2p device MAC when a GO is started/stopped */
1025 mvm->p2p_device_vif = vif;
1026 }
1027
63494374 1028 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1029 goto out_unlock;
1030
1031 out_unbind:
1032 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 1033 out_unref_phy:
fe0f2de3 1034 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
bd3351ba
EP		 1035 out_free_bf:
1036 if (mvm->bf_allowed_vif == mvmvif) {
1037 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1038 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1039 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
bd3351ba 1040 }
8ca151b5
JB		 1041 out_remove_mac:
1042 mvmvif->phy_ctxt = NULL;
1043 iwl_mvm_mac_ctxt_remove(mvm, vif);
1044 out_release:
5ee2b215
AB		 1045 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1046 mvm->vif_count--;
1c2abf72 1047
8ca151b5
JB		 1048 iwl_mvm_mac_ctxt_release(mvm, vif);
1049 out_unlock:
1050 mutex_unlock(&mvm->mutex);
1051
d40fc489
GG		 1052 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1053
8ca151b5
JB		 1054 return ret;
1055}
1056
38a12b5b
JB		 1057static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1058 struct ieee80211_vif *vif)
8ca151b5 1059{
8ca151b5
JB		 1060 u32 tfd_msk = 0, ac;
1061
1062 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1063 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
1064 tfd_msk |= BIT(vif->hw_queue[ac]);
1065
1066 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
1067 tfd_msk |= BIT(vif->cab_queue);
1068
1069 if (tfd_msk) {
1070 mutex_lock(&mvm->mutex);
1071 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1072 mutex_unlock(&mvm->mutex);
1073 }
1074
1075 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1076 /*
1077 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1078 * We assume here that all the packets sent to the OFFCHANNEL
1079 * queue are sent in ROC session.
1080 */
1081 flush_work(&mvm->roc_done_wk);
1082 } else {
1083 /*
1084 * By now, all the AC queues are empty. The AGG queues are
1085 * empty too. We already got all the Tx responses for all the
1086 * packets in the queues. The drain work can have been
0742a75a 1087 * triggered. Flush it.
8ca151b5
JB		 1088 */
1089 flush_work(&mvm->sta_drained_wk);
1090 }
38a12b5b
JB		 1091}
1092
1093static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1094 struct ieee80211_vif *vif)
1095{
1096 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1097 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1098
1099 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 1100
1101 mutex_lock(&mvm->mutex);
1102
7df15b1e
HG		 1103 if (mvm->bf_allowed_vif == mvmvif) {
1104 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1105 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1106 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
7df15b1e
HG		 1107 }
1108
63494374
JB		 1109 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1110
8ca151b5
JB		 1111 /*
1112 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 1113 * interface is be handled as part of the stop_ap flow.
8ca151b5 1114 */
5023d966
JB		 1115 if (vif->type == NL80211_IFTYPE_AP ||
1116 vif->type == NL80211_IFTYPE_ADHOC) {
507cadf2
DS		 1117#ifdef CONFIG_NL80211_TESTMODE
1118 if (vif == mvm->noa_vif) {
1119 mvm->noa_vif = NULL;
1120 mvm->noa_duration = 0;
1121 }
1122#endif
8ca151b5
JB		 1123 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
1124 goto out_release;
1125 }
1126
1127 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1128 mvm->p2p_device_vif = NULL;
1129 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1130 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 1131 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1132 mvmvif->phy_ctxt = NULL;
1133 }
1134
5ee2b215 1135 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5 1136 mvm->vif_count--;
1c2abf72 1137
999609f1 1138 iwl_mvm_power_update_mac(mvm);
8ca151b5
JB		 1139 iwl_mvm_mac_ctxt_remove(mvm, vif);
1140
1141out_release:
1142 iwl_mvm_mac_ctxt_release(mvm, vif);
1143 mutex_unlock(&mvm->mutex);
1144}
1145
1146static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
88f2fd73 1147{
8ca151b5
JB		 1148 return 0;
1149}
1150
e59647ea
EP		 1151struct iwl_mvm_mc_iter_data {
1152 struct iwl_mvm *mvm;
1153 int port_id;
1154};
1155
1156static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1157 struct ieee80211_vif *vif)
1158{
1159 struct iwl_mvm_mc_iter_data *data = _data;
1160 struct iwl_mvm *mvm = data->mvm;
1161 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1162 int ret, len;
1163
1164 /* if we don't have free ports, mcast frames will be dropped */
1165 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1166 return;
1167
1168 if (vif->type != NL80211_IFTYPE_STATION ||
1169 !vif->bss_conf.assoc)
1170 return;
1171
1172 cmd->port_id = data->port_id++;
1173 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1174 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1175
1c4abec0 1176 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
e59647ea
EP		 1177 if (ret)
1178 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1179}
1180
1181static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1182{
1183 struct iwl_mvm_mc_iter_data iter_data = {
1184 .mvm = mvm,
88f2fd73
MG		 1185 };
1186
e59647ea
EP		 1187 lockdep_assert_held(&mvm->mutex);
1188
1189 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1190 return;
1191
1c4abec0 1192 ieee80211_iterate_active_interfaces_atomic(
e59647ea
EP		 1193 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1194 iwl_mvm_mc_iface_iterator, &iter_data);
88f2fd73
MG		 1195}
1196
e59647ea
EP		 1197static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1198 struct netdev_hw_addr_list *mc_list)
8ca151b5 1199{
e59647ea
EP		 1200 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1201 struct iwl_mcast_filter_cmd *cmd;
1202 struct netdev_hw_addr *addr;
1203 int addr_count = netdev_hw_addr_list_count(mc_list);
1204 bool pass_all = false;
1205 int len;
1206
1207 if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) {
1208 pass_all = true;
1209 addr_count = 0;
1210 }
1211
1212 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1213 cmd = kzalloc(len, GFP_ATOMIC);
1214 if (!cmd)
1215 return 0;
1216
1217 if (pass_all) {
1218 cmd->pass_all = 1;
1219 return (u64)(unsigned long)cmd;
1220 }
1221
1222 netdev_hw_addr_list_for_each(addr, mc_list) {
1223 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1224 cmd->count, addr->addr);
1225 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1226 addr->addr, ETH_ALEN);
1227 cmd->count++;
1228 }
1229
1230 return (u64)(unsigned long)cmd;
8ca151b5
JB		 1231}
1232
1233static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1234 unsigned int changed_flags,
1235 unsigned int *total_flags,
1236 u64 multicast)
1237{
e59647ea
EP		 1238 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1239 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
8ca151b5 1240
e59647ea 1241 mutex_lock(&mvm->mutex);
51b6b9e0 1242
e59647ea
EP		 1243 /* replace previous configuration */
1244 kfree(mvm->mcast_filter_cmd);
1245 mvm->mcast_filter_cmd = cmd;
51b6b9e0 1246
e59647ea
EP		 1247 if (!cmd)
1248 goto out;
51b6b9e0 1249
e59647ea
EP		 1250 iwl_mvm_recalc_multicast(mvm);
1251out:
1252 mutex_unlock(&mvm->mutex);
1253 *total_flags = 0;
51b6b9e0
EG		 1254}
1255
c87163b9
EP		 1256#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1257struct iwl_bcast_iter_data {
1258 struct iwl_mvm *mvm;
1259 struct iwl_bcast_filter_cmd *cmd;
1260 u8 current_filter;
1261};
1262
1263static void
1264iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1265 const struct iwl_fw_bcast_filter *in_filter,
1266 struct iwl_fw_bcast_filter *out_filter)
1267{
1268 struct iwl_fw_bcast_filter_attr *attr;
1269 int i;
1270
1271 memcpy(out_filter, in_filter, sizeof(*out_filter));
1272
1273 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1274 attr = &out_filter->attrs[i];
1275
1276 if (!attr->mask)
1277 break;
1278
2ee8f021
EP		 1279 switch (attr->reserved1) {
1280 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1281 if (vif->bss_conf.arp_addr_cnt != 1) {
1282 attr->mask = 0;
1283 continue;
1284 }
1285
1286 attr->val = vif->bss_conf.arp_addr_list[0];
1287 break;
1288 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1289 attr->val = *(__be32 *)&vif->addr[2];
1290 break;
1291 default:
1292 break;
1293 }
1294 attr->reserved1 = 0;
c87163b9
EP		 1295 out_filter->num_attrs++;
1296 }
1297}
1298
1299static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1300 struct ieee80211_vif *vif)
1301{
1302 struct iwl_bcast_iter_data *data = _data;
1303 struct iwl_mvm *mvm = data->mvm;
1304 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1305 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1306 struct iwl_fw_bcast_mac *bcast_mac;
1307 int i;
1308
1309 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1310 return;
1311
1312 bcast_mac = &cmd->macs[mvmvif->id];
1313
e48393e8
IP		 1314 /*
1315 * enable filtering only for associated stations, but not for P2P
1316 * Clients
1317 */
1318 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1319 !vif->bss_conf.assoc)
c87163b9
EP		 1320 return;
1321
1322 bcast_mac->default_discard = 1;
1323
1324 /* copy all configured filters */
1325 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1326 /*
1327 * Make sure we don't exceed our filters limit.
1328 * if there is still a valid filter to be configured,
1329 * be on the safe side and just allow bcast for this mac.
1330 */
1331 if (WARN_ON_ONCE(data->current_filter >=
1332 ARRAY_SIZE(cmd->filters))) {
1333 bcast_mac->default_discard = 0;
1334 bcast_mac->attached_filters = 0;
1335 break;
1336 }
1337
1338 iwl_mvm_set_bcast_filter(vif,
1339 &mvm->bcast_filters[i],
1340 &cmd->filters[data->current_filter]);
1341
1342 /* skip current filter if it contains no attributes */
1343 if (!cmd->filters[data->current_filter].num_attrs)
1344 continue;
1345
1346 /* attach the filter to current mac */
1347 bcast_mac->attached_filters |=
1348 cpu_to_le16(BIT(data->current_filter));
1349
1350 data->current_filter++;
1351 }
1352}
1353
de06a59e
EP		 1354bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1355 struct iwl_bcast_filter_cmd *cmd)
c87163b9 1356{
c87163b9
EP		 1357 struct iwl_bcast_iter_data iter_data = {
1358 .mvm = mvm,
de06a59e 1359 .cmd = cmd,
c87163b9
EP		 1360 };
1361
de06a59e
EP		 1362 memset(cmd, 0, sizeof(*cmd));
1363 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1364 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1365
1366#ifdef CONFIG_IWLWIFI_DEBUGFS
1367 /* use debugfs filters/macs if override is configured */
1368 if (mvm->dbgfs_bcast_filtering.override) {
1369 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1370 sizeof(cmd->filters));
1371 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1372 sizeof(cmd->macs));
1373 return true;
1374 }
1375#endif
c87163b9
EP		 1376
1377 /* if no filters are configured, do nothing */
1378 if (!mvm->bcast_filters)
de06a59e 1379 return false;
c87163b9
EP		 1380
1381 /* configure and attach these filters for each associated sta vif */
1382 ieee80211_iterate_active_interfaces(
1383 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1384 iwl_mvm_bcast_filter_iterator, &iter_data);
1385
de06a59e
EP		 1386 return true;
1387}
1388static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1389 struct ieee80211_vif *vif)
1390{
1391 struct iwl_bcast_filter_cmd cmd;
1392
1393 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1394 return 0;
1395
1396 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1397 return 0;
1398
a1022927 1399 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
c87163b9
EP		 1400 sizeof(cmd), &cmd);
1401}
1402#else
1403static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1404 struct ieee80211_vif *vif)
1405{
1406 return 0;
1407}
1408#endif
1409
8ca151b5
JB		 1410static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1411 struct ieee80211_vif *vif,
1412 struct ieee80211_bss_conf *bss_conf,
1413 u32 changes)
1414{
1415 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1416 int ret;
1417
6e97b0d2
IP		 1418 /*
1419 * Re-calculate the tsf id, as the master-slave relations depend on the
1420 * beacon interval, which was not known when the station interface was
1421 * added.
1422 */
1423 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1424 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1425
bca49d9a 1426 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false);
8ca151b5
JB		 1427 if (ret)
1428 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1429
1430 if (changes & BSS_CHANGED_ASSOC) {
1431 if (bss_conf->assoc) {
1432 /* add quota for this interface */
0166230c 1433 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1434 if (ret) {
1435 IWL_ERR(mvm, "failed to update quotas\n");
1436 return;
1437 }
016d27e1
JB		 1438
1439 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1440 &mvm->status)) {
1441 /*
1442 * If we're restarting then the firmware will
1443 * obviously have lost synchronisation with
1444 * the AP. It will attempt to synchronise by
1445 * itself, but we can make it more reliable by
1446 * scheduling a session protection time event.
1447 *
1448 * The firmware needs to receive a beacon to
1449 * catch up with synchronisation, use 110% of
1450 * the beacon interval.
1451 *
1452 * Set a large maximum delay to allow for more
1453 * than a single interface.
1454 */
1455 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1456 iwl_mvm_protect_session(mvm, vif, dur, dur,
1457 5 * dur);
1458 }
1f3b0ff8
LE		 1459
1460 iwl_mvm_sf_update(mvm, vif, false);
175a70b7 1461 iwl_mvm_power_vif_assoc(mvm, vif);
29a90a49
EP		 1462 if (vif->p2p)
1463 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
8ca151b5 1464 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1f3b0ff8
LE		 1465 /*
1466 * If update fails - SF might be running in associated
1467 * mode while disassociated - which is forbidden.
1468 */
1469 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1470 "Failed to update SF upon disassociation\n");
1471
8ca151b5
JB		 1472 /* remove AP station now that the MAC is unassoc */
1473 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1474 if (ret)
1475 IWL_ERR(mvm, "failed to remove AP station\n");
37577fe2
EP		 1476
1477 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1478 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
8ca151b5
JB		 1479 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1480 /* remove quota for this interface */
0166230c 1481 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1482 if (ret)
1483 IWL_ERR(mvm, "failed to update quotas\n");
29a90a49
EP		 1484
1485 if (vif->p2p)
1486 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
8ca151b5 1487 }
a20fd398 1488
e59647ea 1489 iwl_mvm_recalc_multicast(mvm);
c87163b9 1490 iwl_mvm_configure_bcast_filter(mvm, vif);
e59647ea 1491
a20fd398
AO		 1492 /* reset rssi values */
1493 mvmvif->bf_data.ave_beacon_signal = 0;
1494
8e484f0b 1495 iwl_mvm_bt_coex_vif_change(mvm);
f94045ed
EG		 1496 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1497 IEEE80211_SMPS_AUTOMATIC);
989c6505 1498 } else if (changes & BSS_CHANGED_BEACON_INFO) {
210a544e
JB		 1499 /*
1500 * We received a beacon _after_ association so
1501 * remove the session protection.
1502 */
1503 iwl_mvm_remove_time_event(mvm, mvmvif,
1504 &mvmvif->time_event_data);
0229cdaf 1505 iwl_mvm_sf_update(mvm, vif, false);
a1022927 1506 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
51498cf6
AB		 1507 } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
1508 BSS_CHANGED_QOS)) {
999609f1 1509 ret = iwl_mvm_power_update_mac(mvm);
4bf881f5
AB		 1510 if (ret)
1511 IWL_ERR(mvm, "failed to update power mode\n");
8ca151b5 1512 }
88f2fd73
MG		 1513 if (changes & BSS_CHANGED_TXPOWER) {
1514 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1515 bss_conf->txpower);
1516 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1517 }
a20fd398
AO		 1518
1519 if (changes & BSS_CHANGED_CQM) {
3c6acb61 1520 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
a20fd398
AO		 1521 /* reset cqm events tracking */
1522 mvmvif->bf_data.last_cqm_event = 0;
fa7b2e7f
AA		 1523 if (mvmvif->bf_data.bf_enabled) {
1524 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1525 if (ret)
1526 IWL_ERR(mvm,
1527 "failed to update CQM thresholds\n");
1528 }
a20fd398 1529 }
2ee8f021
EP		 1530
1531 if (changes & BSS_CHANGED_ARP_FILTER) {
3c6acb61 1532 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2ee8f021
EP		 1533 iwl_mvm_configure_bcast_filter(mvm, vif);
1534 }
8ca151b5
JB		 1535}
1536
5023d966
JB		 1537static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1538 struct ieee80211_vif *vif)
8ca151b5
JB		 1539{
1540 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1541 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1542 int ret;
1543
576eeee9
EP		 1544 /*
1545 * iwl_mvm_mac_ctxt_add() might read directly from the device
1546 * (the system time), so make sure it is available.
1547 */
1548 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1549 if (ret)
1550 return ret;
1551
8ca151b5
JB		 1552 mutex_lock(&mvm->mutex);
1553
1554 /* Send the beacon template */
1555 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1556 if (ret)
1557 goto out_unlock;
1558
6e97b0d2
IP		 1559 /*
1560 * Re-calculate the tsf id, as the master-slave relations depend on the
1561 * beacon interval, which was not known when the AP interface was added.
1562 */
1563 if (vif->type == NL80211_IFTYPE_AP)
1564 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1565
8ca151b5
JB		 1566 /* Add the mac context */
1567 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1568 if (ret)
1569 goto out_unlock;
1570
1571 /* Perform the binding */
1572 ret = iwl_mvm_binding_add_vif(mvm, vif);
1573 if (ret)
1574 goto out_remove;
1575
8ca151b5
JB		 1576 /* Send the bcast station. At this stage the TBTT and DTIM time events
1577 * are added and applied to the scheduler */
1578 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1579 if (ret)
1580 goto out_unbind;
1581
5691e218
IP		 1582 /* must be set before quota calculations */
1583 mvmvif->ap_ibss_active = true;
1584
a11e144e 1585 /* power updated needs to be done before quotas */
999609f1 1586 iwl_mvm_power_update_mac(mvm);
a11e144e 1587
0166230c 1588 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5 1589 if (ret)
a11e144e 1590 goto out_quota_failed;
8ca151b5 1591
5023d966 1592 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1593 if (vif->p2p && mvm->p2p_device_vif)
bca49d9a 1594 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
8ca151b5 1595
29a90a49
EP		 1596 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1597
8e484f0b 1598 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1599
8ca151b5
JB		 1600 mutex_unlock(&mvm->mutex);
1601 return 0;
1602
a11e144e 1603out_quota_failed:
999609f1 1604 iwl_mvm_power_update_mac(mvm);
5691e218 1605 mvmvif->ap_ibss_active = false;
8ca151b5
JB		 1606 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1607out_unbind:
1608 iwl_mvm_binding_remove_vif(mvm, vif);
1609out_remove:
1610 iwl_mvm_mac_ctxt_remove(mvm, vif);
1611out_unlock:
1612 mutex_unlock(&mvm->mutex);
576eeee9 1613 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
8ca151b5
JB		 1614 return ret;
1615}
1616
5023d966
JB		 1617static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1618 struct ieee80211_vif *vif)
8ca151b5
JB		 1619{
1620 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1621 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1622
38a12b5b
JB		 1623 iwl_mvm_prepare_mac_removal(mvm, vif);
1624
8ca151b5
JB		 1625 mutex_lock(&mvm->mutex);
1626
664322fa 1627 /* Handle AP stop while in CSA */
7f0a7c67
AO		 1628 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1629 iwl_mvm_remove_time_event(mvm, mvmvif,
1630 &mvmvif->time_event_data);
664322fa 1631 RCU_INIT_POINTER(mvm->csa_vif, NULL);
7f0a7c67 1632 }
664322fa 1633
003e5236
AO		 1634 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1635 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1636 mvm->csa_tx_block_bcn_timeout = 0;
1637 }
1638
5023d966 1639 mvmvif->ap_ibss_active = false;
1c87bbad 1640 mvm->ap_last_beacon_gp2 = 0;
8ca151b5 1641
8e484f0b 1642 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1643
29a90a49
EP		 1644 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1645
5023d966 1646 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1647 if (vif->p2p && mvm->p2p_device_vif)
bca49d9a 1648 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
8ca151b5 1649
0166230c 1650 iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1651 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1652 iwl_mvm_binding_remove_vif(mvm, vif);
a11e144e 1653
999609f1 1654 iwl_mvm_power_update_mac(mvm);
a11e144e 1655
8ca151b5
JB		 1656 iwl_mvm_mac_ctxt_remove(mvm, vif);
1657
1658 mutex_unlock(&mvm->mutex);
1659}
1660
5023d966
JB		 1661static void
1662iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1663 struct ieee80211_vif *vif,
1664 struct ieee80211_bss_conf *bss_conf,
1665 u32 changes)
8ca151b5 1666{
be2056fc 1667 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8a5e3660 1668
be2056fc
IP		 1669 /* Changes will be applied when the AP/IBSS is started */
1670 if (!mvmvif->ap_ibss_active)
1671 return;
1672
863230da
JB		 1673 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1674 BSS_CHANGED_BANDWIDTH) &&
bca49d9a 1675 iwl_mvm_mac_ctxt_changed(mvm, vif, false))
863230da 1676 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
8a5e3660 1677
8ca151b5 1678 /* Need to send a new beacon template to the FW */
863230da
JB		 1679 if (changes & BSS_CHANGED_BEACON &&
1680 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1681 IWL_WARN(mvm, "Failed updating beacon data\n");
8ca151b5
JB		 1682}
1683
1684static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1685 struct ieee80211_vif *vif,
1686 struct ieee80211_bss_conf *bss_conf,
1687 u32 changes)
1688{
1689 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1690
576eeee9
EP		 1691 /*
1692 * iwl_mvm_bss_info_changed_station() might call
1693 * iwl_mvm_protect_session(), which reads directly from
1694 * the device (the system time), so make sure it is available.
1695 */
1696 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1697 return;
1698
8ca151b5
JB		 1699 mutex_lock(&mvm->mutex);
1700
723f02ed 1701 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
fb98be5e 1702 iwl_mvm_scan_offload_stop(mvm, true);
723f02ed 1703
8ca151b5
JB		 1704 switch (vif->type) {
1705 case NL80211_IFTYPE_STATION:
1706 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1707 break;
1708 case NL80211_IFTYPE_AP:
5023d966
JB		 1709 case NL80211_IFTYPE_ADHOC:
1710 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
8ca151b5
JB		 1711 break;
1712 default:
1713 /* shouldn't happen */
1714 WARN_ON_ONCE(1);
1715 }
1716
1717 mutex_unlock(&mvm->mutex);
576eeee9 1718 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
8ca151b5
JB		 1719}
1720
1721static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1722 struct ieee80211_vif *vif,
c56ef672 1723 struct ieee80211_scan_request *hw_req)
8ca151b5
JB		 1724{
1725 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
c56ef672 1726 struct cfg80211_scan_request *req = &hw_req->req;
8ca151b5
JB		 1727 int ret;
1728
762533ba
DS		 1729 if (req->n_channels == 0 ||
1730 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
8ca151b5
JB		 1731 return -EINVAL;
1732
1733 mutex_lock(&mvm->mutex);
1734
a6623e84
JB		 1735 switch (mvm->scan_status) {
1736 case IWL_MVM_SCAN_SCHED:
fb98be5e 1737 ret = iwl_mvm_scan_offload_stop(mvm, true);
a6623e84
JB		 1738 if (ret) {
1739 ret = -EBUSY;
1740 goto out;
1741 }
a6623e84
JB		 1742 break;
1743 case IWL_MVM_SCAN_NONE:
1744 break;
1745 default:
8ca151b5 1746 ret = -EBUSY;
519e2026
AN		 1747 goto out;
1748 }
8ca151b5 1749
519e2026
AN		 1750 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1751
fb98be5e
DS		 1752 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1753 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1754 else
1755 ret = iwl_mvm_scan_request(mvm, vif, req);
1756
519e2026
AN		 1757 if (ret)
1758 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1759out:
8ca151b5 1760 mutex_unlock(&mvm->mutex);
33ea27f6
AN		 1761 /* make sure to flush the Rx handler before the next scan arrives */
1762 iwl_mvm_wait_for_async_handlers(mvm);
8ca151b5
JB		 1763 return ret;
1764}
1765
1766static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1767 struct ieee80211_vif *vif)
1768{
1769 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1770
1771 mutex_lock(&mvm->mutex);
1772
1773 iwl_mvm_cancel_scan(mvm);
1774
1775 mutex_unlock(&mvm->mutex);
1776}
1777
1778static void
1779iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
3e56eadf 1780 struct ieee80211_sta *sta, u16 tids,
8ca151b5
JB		 1781 int num_frames,
1782 enum ieee80211_frame_release_type reason,
1783 bool more_data)
1784{
1785 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5 1786
3e56eadf 1787 /* Called when we need to transmit (a) frame(s) from mac80211 */
8ca151b5 1788
3e56eadf
JB		 1789 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1790 tids, more_data, false);
1791}
1792
1793static void
1794iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1795 struct ieee80211_sta *sta, u16 tids,
1796 int num_frames,
1797 enum ieee80211_frame_release_type reason,
1798 bool more_data)
1799{
1800 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1801
1802 /* Called when we need to transmit (a) frame(s) from agg queue */
1803
1804 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1805 tids, more_data, true);
8ca151b5
JB		 1806}
1807
1808static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1809 struct ieee80211_vif *vif,
1810 enum sta_notify_cmd cmd,
1811 struct ieee80211_sta *sta)
1812{
1813 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5b577a90 1814 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3e56eadf 1815 int tid;
8ca151b5
JB		 1816
1817 switch (cmd) {
1818 case STA_NOTIFY_SLEEP:
e3d4bc8c 1819 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5 1820 ieee80211_sta_block_awake(hw, sta, true);
3e56eadf
JB		 1821 spin_lock_bh(&mvmsta->lock);
1822 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1823 struct iwl_mvm_tid_data *tid_data;
1824
1825 tid_data = &mvmsta->tid_data[tid];
1826 if (tid_data->state != IWL_AGG_ON &&
1827 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
1828 continue;
1829 if (iwl_mvm_tid_queued(tid_data) == 0)
1830 continue;
1831 ieee80211_sta_set_buffered(sta, tid, true);
1832 }
1833 spin_unlock_bh(&mvmsta->lock);
8ca151b5
JB		 1834 /*
1835 * The fw updates the STA to be asleep. Tx packets on the Tx
1836 * queues to this station will not be transmitted. The fw will
1837 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1838 */
1839 break;
1840 case STA_NOTIFY_AWAKE:
881acd89 1841 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
8ca151b5 1842 break;
9cc40712 1843 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 1844 break;
1845 default:
1846 break;
1847 }
1848}
1849
1ddbbb0c
JB		 1850static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1851 struct ieee80211_vif *vif,
1852 struct ieee80211_sta *sta)
1853{
1854 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1855 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1856
1857 /*
1858 * This is called before mac80211 does RCU synchronisation,
1859 * so here we already invalidate our internal RCU-protected
1860 * station pointer. The rest of the code will thus no longer
1861 * be able to find the station this way, and we don't rely
1862 * on further RCU synchronisation after the sta_state()
1863 * callback deleted the station.
1864 */
1865 mutex_lock(&mvm->mutex);
1866 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1867 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1868 ERR_PTR(-ENOENT));
1869 mutex_unlock(&mvm->mutex);
1870}
1871
fa3d07e4 1872int iwl_mvm_tdls_sta_count(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
cf7b491d
AN		 1873{
1874 struct ieee80211_sta *sta;
fa3d07e4 1875 struct iwl_mvm_sta *mvmsta;
cf7b491d
AN		 1876 int count = 0;
1877 int i;
1878
1879 lockdep_assert_held(&mvm->mutex);
1880
1881 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1882 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1883 lockdep_is_held(&mvm->mutex));
1884 if (!sta || IS_ERR(sta) || !sta->tdls)
1885 continue;
1886
fa3d07e4
AN		 1887 if (vif) {
1888 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1889 if (mvmsta->vif != vif)
1890 continue;
1891 }
1892
cf7b491d
AN		 1893 count++;
1894 }
1895
1896 return count;
1897}
1898
fa3d07e4
AN		 1899static void iwl_mvm_recalc_tdls_state(struct iwl_mvm *mvm,
1900 struct ieee80211_vif *vif,
1901 bool sta_added)
1902{
1903 int tdls_sta_cnt = iwl_mvm_tdls_sta_count(mvm, vif);
1904
1905 /*
1906 * Disable ps when the first TDLS sta is added and re-enable it
1907 * when the last TDLS sta is removed
1908 */
1909 if ((tdls_sta_cnt == 1 && sta_added) ||
1910 (tdls_sta_cnt == 0 && !sta_added))
1911 iwl_mvm_power_update_mac(mvm);
1912}
1913
f59e0e3c
AN		 1914static void iwl_mvm_teardown_tdls_peers(struct iwl_mvm *mvm)
1915{
1916 struct ieee80211_sta *sta;
1917 struct iwl_mvm_sta *mvmsta;
1918 int i;
1919
1920 lockdep_assert_held(&mvm->mutex);
1921
1922 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1923 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1924 lockdep_is_held(&mvm->mutex));
1925 if (!sta || IS_ERR(sta) || !sta->tdls)
1926 continue;
1927
1928 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1929 ieee80211_tdls_oper_request(mvmsta->vif, sta->addr,
1930 NL80211_TDLS_TEARDOWN,
1931 WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED,
1932 GFP_KERNEL);
1933 }
1934}
1935
8ca151b5
JB		 1936static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1937 struct ieee80211_vif *vif,
1938 struct ieee80211_sta *sta,
1939 enum ieee80211_sta_state old_state,
1940 enum ieee80211_sta_state new_state)
1941{
1942 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1943 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1944 int ret;
1945
1946 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1947 sta->addr, old_state, new_state);
1948
1949 /* this would be a mac80211 bug ... but don't crash */
1950 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1951 return -EINVAL;
1952
1953 /* if a STA is being removed, reuse its ID */
1954 flush_work(&mvm->sta_drained_wk);
1955
1956 mutex_lock(&mvm->mutex);
1957 if (old_state == IEEE80211_STA_NOTEXIST &&
1958 new_state == IEEE80211_STA_NONE) {
48bc1307
JB		 1959 /*
1960 * Firmware bug - it'll crash if the beacon interval is less
1961 * than 16. We can't avoid connecting at all, so refuse the
1962 * station state change, this will cause mac80211 to abandon
1963 * attempts to connect to this AP, and eventually wpa_s will
1964 * blacklist the AP...
1965 */
1966 if (vif->type == NL80211_IFTYPE_STATION &&
1967 vif->bss_conf.beacon_int < 16) {
1968 IWL_ERR(mvm,
1969 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
1970 sta->addr, vif->bss_conf.beacon_int);
1971 ret = -EINVAL;
1972 goto out_unlock;
1973 }
cf7b491d
AN		 1974
1975 if (sta->tdls &&
1976 (vif->p2p ||
fa3d07e4
AN		 1977 iwl_mvm_tdls_sta_count(mvm, NULL) ==
1978 IWL_MVM_TDLS_STA_COUNT ||
cf7b491d
AN		 1979 iwl_mvm_phy_ctx_count(mvm) > 1)) {
1980 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
1981 ret = -EBUSY;
1982 goto out_unlock;
1983 }
1984
8ca151b5 1985 ret = iwl_mvm_add_sta(mvm, vif, sta);
fa3d07e4
AN		 1986 if (sta->tdls && ret == 0)
1987 iwl_mvm_recalc_tdls_state(mvm, vif, true);
8ca151b5
JB		 1988 } else if (old_state == IEEE80211_STA_NONE &&
1989 new_state == IEEE80211_STA_AUTH) {
e820c2da
HD		 1990 /*
1991 * EBS may be disabled due to previous failures reported by FW.
1992 * Reset EBS status here assuming environment has been changed.
1993 */
1994 mvm->last_ebs_successful = true;
8ca151b5
JB		 1995 ret = 0;
1996 } else if (old_state == IEEE80211_STA_AUTH &&
1997 new_state == IEEE80211_STA_ASSOC) {
7a453973
JB		 1998 ret = iwl_mvm_update_sta(mvm, vif, sta);
1999 if (ret == 0)
2000 iwl_mvm_rs_rate_init(mvm, sta,
b87c2179
ES		 2001 mvmvif->phy_ctxt->channel->band,
2002 true);
8ca151b5
JB		 2003 } else if (old_state == IEEE80211_STA_ASSOC &&
2004 new_state == IEEE80211_STA_AUTHORIZED) {
f59e0e3c
AN		 2005
2006 /* we don't support TDLS during DCM */
2007 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2008 iwl_mvm_teardown_tdls_peers(mvm);
2009
7df15b1e 2010 /* enable beacon filtering */
fa7b2e7f 2011 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2012 ret = 0;
2013 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2014 new_state == IEEE80211_STA_ASSOC) {
7df15b1e 2015 /* disable beacon filtering */
a1022927 2016 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2017 ret = 0;
2018 } else if (old_state == IEEE80211_STA_ASSOC &&
2019 new_state == IEEE80211_STA_AUTH) {
2020 ret = 0;
2021 } else if (old_state == IEEE80211_STA_AUTH &&
2022 new_state == IEEE80211_STA_NONE) {
2023 ret = 0;
2024 } else if (old_state == IEEE80211_STA_NONE &&
2025 new_state == IEEE80211_STA_NOTEXIST) {
2026 ret = iwl_mvm_rm_sta(mvm, vif, sta);
fa3d07e4
AN		 2027 if (sta->tdls)
2028 iwl_mvm_recalc_tdls_state(mvm, vif, false);
8ca151b5
JB		 2029 } else {
2030 ret = -EIO;
2031 }
48bc1307 2032 out_unlock:
8ca151b5
JB		 2033 mutex_unlock(&mvm->mutex);
2034
2035 return ret;
2036}
2037
2038static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2039{
2040 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2041
2042 mvm->rts_threshold = value;
2043
2044 return 0;
2045}
2046
1f3b0ff8
LE		 2047static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2048 struct ieee80211_vif *vif,
2049 struct ieee80211_sta *sta, u32 changed)
2050{
2051 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2052
2053 if (vif->type == NL80211_IFTYPE_STATION &&
2054 changed & IEEE80211_RC_NSS_CHANGED)
2055 iwl_mvm_sf_update(mvm, vif, false);
2056}
2057
8ca151b5
JB		 2058static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2059 struct ieee80211_vif *vif, u16 ac,
2060 const struct ieee80211_tx_queue_params *params)
2061{
2062 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2063 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2064
2065 mvmvif->queue_params[ac] = *params;
2066
2067 /*
2068 * No need to update right away, we'll get BSS_CHANGED_QOS
2069 * The exception is P2P_DEVICE interface which needs immediate update.
2070 */
2071 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2072 int ret;
2073
2074 mutex_lock(&mvm->mutex);
bca49d9a 2075 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false);
8ca151b5
JB		 2076 mutex_unlock(&mvm->mutex);
2077 return ret;
2078 }
2079 return 0;
2080}
2081
2082static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2083 struct ieee80211_vif *vif)
2084{
2085 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2086 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2087 200 + vif->bss_conf.beacon_int);
2088 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2089 100 + vif->bss_conf.beacon_int);
2090
2091 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2092 return;
2093
576eeee9
EP		 2094 /*
2095 * iwl_mvm_protect_session() reads directly from the device
2096 * (the system time), so make sure it is available.
2097 */
2098 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2099 return;
2100
8ca151b5
JB		 2101 mutex_lock(&mvm->mutex);
2102 /* Try really hard to protect the session and hear a beacon */
016d27e1 2103 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
8ca151b5 2104 mutex_unlock(&mvm->mutex);
576eeee9
EP		 2105
2106 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
8ca151b5
JB		 2107}
2108
07ecd897
AN		 2109static void iwl_mvm_mac_mgd_protect_tdls_discover(struct ieee80211_hw *hw,
2110 struct ieee80211_vif *vif)
2111{
2112 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2113 u32 duration = 2 * vif->bss_conf.dtim_period * vif->bss_conf.beacon_int;
2114
576eeee9
EP		 2115 /*
2116 * iwl_mvm_protect_session() reads directly from the device
2117 * (the system time), so make sure it is available.
2118 */
2119 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_TDLS))
2120 return;
2121
07ecd897
AN		 2122 mutex_lock(&mvm->mutex);
2123 /* Protect the session to hear the TDLS setup response on the channel */
2124 iwl_mvm_protect_session(mvm, vif, duration, duration, 100);
2125 mutex_unlock(&mvm->mutex);
576eeee9
EP		 2126
2127 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_TDLS);
07ecd897
AN		 2128}
2129
35a000b7
DS		 2130static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2131 struct ieee80211_vif *vif,
2132 struct cfg80211_sched_scan_request *req,
633e2713 2133 struct ieee80211_scan_ies *ies)
35a000b7
DS		 2134{
2135 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2136 int ret;
2137
2138 mutex_lock(&mvm->mutex);
2139
b538b8ce 2140 if (!iwl_mvm_is_idle(mvm)) {
bd5e4744
DS		 2141 ret = -EBUSY;
2142 goto out;
2143 }
2144
91b80256
AN		 2145 switch (mvm->scan_status) {
2146 case IWL_MVM_SCAN_OS:
2147 IWL_DEBUG_SCAN(mvm, "Stopping previous scan for sched_scan\n");
2148 ret = iwl_mvm_cancel_scan(mvm);
2149 if (ret) {
2150 ret = -EBUSY;
2151 goto out;
2152 }
2153
2154 /*
2155 * iwl_mvm_rx_scan_complete() will be called soon but will
2156 * not reset the scan status as it won't be IWL_MVM_SCAN_OS
2157 * any more since we queue the next scan immediately (below).
2158 * We make sure it is called before the next scan starts by
2159 * flushing the async-handlers work.
2160 */
2161 break;
2162 case IWL_MVM_SCAN_NONE:
2163 break;
2164 default:
35a000b7
DS		 2165 ret = -EBUSY;
2166 goto out;
2167 }
2168
2169 mvm->scan_status = IWL_MVM_SCAN_SCHED;
2170
fb98be5e
DS		 2171 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
2172 ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
2173 if (ret)
2174 goto err;
2175 }
35a000b7
DS		 2176
2177 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2178 if (ret)
2179 goto err;
2180
fb98be5e
DS		 2181 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
2182 ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies);
2183 else
2184 ret = iwl_mvm_sched_scan_start(mvm, req);
2185
35a000b7
DS		 2186 if (!ret)
2187 goto out;
2188err:
2189 mvm->scan_status = IWL_MVM_SCAN_NONE;
2190out:
2191 mutex_unlock(&mvm->mutex);
91b80256
AN		 2192 /* make sure to flush the Rx handler before the next scan arrives */
2193 iwl_mvm_wait_for_async_handlers(mvm);
35a000b7
DS		 2194 return ret;
2195}
2196
37e3308c
JB		 2197static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2198 struct ieee80211_vif *vif)
35a000b7
DS		 2199{
2200 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
33ea27f6 2201 int ret;
35a000b7
DS		 2202
2203 mutex_lock(&mvm->mutex);
fb98be5e 2204 ret = iwl_mvm_scan_offload_stop(mvm, false);
35a000b7 2205 mutex_unlock(&mvm->mutex);
33ea27f6 2206 iwl_mvm_wait_for_async_handlers(mvm);
37e3308c 2207
33ea27f6 2208 return ret;
35a000b7
DS		 2209}
2210
8ca151b5
JB		 2211static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2212 enum set_key_cmd cmd,
2213 struct ieee80211_vif *vif,
2214 struct ieee80211_sta *sta,
2215 struct ieee80211_key_conf *key)
2216{
2217 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2218 int ret;
2219
2220 if (iwlwifi_mod_params.sw_crypto) {
2221 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2222 return -EOPNOTSUPP;
2223 }
2224
2225 switch (key->cipher) {
2226 case WLAN_CIPHER_SUITE_TKIP:
2227 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2228 /* fall-through */
2229 case WLAN_CIPHER_SUITE_CCMP:
2230 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2231 break;
2232 case WLAN_CIPHER_SUITE_AES_CMAC:
2233 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2234 break;
2235 case WLAN_CIPHER_SUITE_WEP40:
2236 case WLAN_CIPHER_SUITE_WEP104:
2237 /*
2238 * Support for TX only, at least for now, so accept
2239 * the key and do nothing else. Then mac80211 will
2240 * pass it for TX but we don't have to use it for RX.
2241 */
2242 return 0;
2243 default:
e36e5433
MS		 2244 /* currently FW supports only one optional cipher scheme */
2245 if (hw->n_cipher_schemes &&
2246 hw->cipher_schemes->cipher == key->cipher)
2247 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2248 else
2249 return -EOPNOTSUPP;
8ca151b5
JB		 2250 }
2251
2252 mutex_lock(&mvm->mutex);
2253
2254 switch (cmd) {
2255 case SET_KEY:
5023d966
JB		 2256 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2257 vif->type == NL80211_IFTYPE_AP) && !sta) {
2258 /*
2259 * GTK on AP interface is a TX-only key, return 0;
2260 * on IBSS they're per-station and because we're lazy
2261 * we don't support them for RX, so do the same.
2262 */
6caffd4f
JB		 2263 ret = 0;
2264 key->hw_key_idx = STA_KEY_IDX_INVALID;
2265 break;
2266 }
2267
8ca151b5
JB		 2268 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2269 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2270 if (ret) {
2271 IWL_WARN(mvm, "set key failed\n");
2272 /*
2273 * can't add key for RX, but we don't need it
2274 * in the device for TX so still return 0
2275 */
6caffd4f 2276 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 2277 ret = 0;
2278 }
2279
2280 break;
2281 case DISABLE_KEY:
6caffd4f
JB		 2282 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2283 ret = 0;
2284 break;
2285 }
2286
8ca151b5
JB		 2287 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2288 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2289 break;
2290 default:
2291 ret = -EINVAL;
2292 }
2293
2294 mutex_unlock(&mvm->mutex);
2295 return ret;
2296}
2297
2298static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2299 struct ieee80211_vif *vif,
2300 struct ieee80211_key_conf *keyconf,
2301 struct ieee80211_sta *sta,
2302 u32 iv32, u16 *phase1key)
2303{
2304 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2305
5023d966
JB		 2306 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2307 return;
2308
8ca151b5
JB		 2309 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2310}
2311
2312
b112889c
AM		 2313static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2314 struct iwl_rx_packet *pkt, void *data)
2315{
2316 struct iwl_mvm *mvm =
2317 container_of(notif_wait, struct iwl_mvm, notif_wait);
2318 struct iwl_hs20_roc_res *resp;
2319 int resp_len = iwl_rx_packet_payload_len(pkt);
2320 struct iwl_mvm_time_event_data *te_data = data;
2321
2322 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2323 return true;
2324
2325 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2326 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2327 return true;
2328 }
2329
2330 resp = (void *)pkt->data;
2331
2332 IWL_DEBUG_TE(mvm,
2333 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2334 resp->status, resp->event_unique_id);
2335
2336 te_data->uid = le32_to_cpu(resp->event_unique_id);
2337 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2338 te_data->uid);
2339
2340 spin_lock_bh(&mvm->time_event_lock);
2341 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2342 spin_unlock_bh(&mvm->time_event_lock);
2343
2344 return true;
2345}
2346
2347#define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2348static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2349 struct ieee80211_channel *channel,
2350 struct ieee80211_vif *vif,
2351 int duration)
2352{
2353 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2354 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2355 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2356 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2357 struct iwl_notification_wait wait_time_event;
2358 struct iwl_hs20_roc_req aux_roc_req = {
2359 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2360 .id_and_color =
2361 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2362 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2363 /* Set the channel info data */
2364 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2365 PHY_BAND_24 : PHY_BAND_5,
2366 .channel_info.channel = channel->hw_value,
2367 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2368 /* Set the time and duration */
2369 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2370 .apply_time_max_delay =
2371 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2372 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2373 };
2374
2375 /* Set the node address */
2376 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2377
2378 te_data->vif = vif;
2379 te_data->duration = duration;
2380 te_data->id = HOT_SPOT_CMD;
2381
2382 lockdep_assert_held(&mvm->mutex);
2383
2384 spin_lock_bh(&mvm->time_event_lock);
2385 list_add_tail(&te_data->list, &mvm->time_event_list);
2386 spin_unlock_bh(&mvm->time_event_lock);
2387
2388 /*
2389 * Use a notification wait, which really just processes the
2390 * command response and doesn't wait for anything, in order
2391 * to be able to process the response and get the UID inside
2392 * the RX path. Using CMD_WANT_SKB doesn't work because it
2393 * stores the buffer and then wakes up this thread, by which
2394 * time another notification (that the time event started)
2395 * might already be processed unsuccessfully.
2396 */
2397 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2398 time_event_response,
2399 ARRAY_SIZE(time_event_response),
2400 iwl_mvm_rx_aux_roc, te_data);
2401
2402 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2403 &aux_roc_req);
2404
2405 if (res) {
2406 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2407 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2408 goto out_clear_te;
2409 }
2410
2411 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2412 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2413 /* should never fail */
2414 WARN_ON_ONCE(res);
2415
2416 if (res) {
2417 out_clear_te:
2418 spin_lock_bh(&mvm->time_event_lock);
2419 iwl_mvm_te_clear_data(mvm, te_data);
2420 spin_unlock_bh(&mvm->time_event_lock);
2421 }
2422
2423 return res;
2424}
2425
8ca151b5
JB		 2426static int iwl_mvm_roc(struct ieee80211_hw *hw,
2427 struct ieee80211_vif *vif,
2428 struct ieee80211_channel *channel,
d339d5ca
IP		 2429 int duration,
2430 enum ieee80211_roc_type type)
8ca151b5
JB		 2431{
2432 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 2433 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 2434 struct cfg80211_chan_def chandef;
31d385ae
IP		 2435 struct iwl_mvm_phy_ctxt *phy_ctxt;
2436 int ret, i;
2437
2438 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2439 duration, type);
8ca151b5 2440
b112889c
AM		 2441 switch (vif->type) {
2442 case NL80211_IFTYPE_STATION:
2443 /* Use aux roc framework (HS20) */
2444 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2445 vif, duration);
2446 return ret;
2447 case NL80211_IFTYPE_P2P_DEVICE:
2448 /* handle below */
2449 break;
2450 default:
2451 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
8ca151b5
JB		 2452 return -EINVAL;
2453 }
2454
8ca151b5
JB		 2455 mutex_lock(&mvm->mutex);
2456
31d385ae
IP		 2457 for (i = 0; i < NUM_PHY_CTX; i++) {
2458 phy_ctxt = &mvm->phy_ctxts[i];
2459 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2460 continue;
2461
2462 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2463 /*
2464 * Unbind the P2P_DEVICE from the current PHY context,
2465 * and if the PHY context is not used remove it.
2466 */
2467 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2468 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2469 goto out_unlock;
2470
2471 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2472
2473 /* Bind the P2P_DEVICE to the current PHY Context */
2474 mvmvif->phy_ctxt = phy_ctxt;
2475
2476 ret = iwl_mvm_binding_add_vif(mvm, vif);
2477 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2478 goto out_unlock;
2479
2480 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2481 goto schedule_time_event;
2482 }
2483 }
2484
2485 /* Need to update the PHY context only if the ROC channel changed */
2486 if (channel == mvmvif->phy_ctxt->channel)
2487 goto schedule_time_event;
2488
8ca151b5 2489 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 2490
31d385ae
IP		 2491 /*
2492 * Change the PHY context configuration as it is currently referenced
2493 * only by the P2P Device MAC
2494 */
2495 if (mvmvif->phy_ctxt->ref == 1) {
2496 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2497 &chandef, 1, 1);
2498 if (ret)
2499 goto out_unlock;
2500 } else {
2501 /*
2502 * The PHY context is shared with other MACs. Need to remove the
2503 * P2P Device from the binding, allocate an new PHY context and
2504 * create a new binding
2505 */
2506 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2507 if (!phy_ctxt) {
2508 ret = -ENOSPC;
2509 goto out_unlock;
2510 }
2511
2512 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2513 1, 1);
2514 if (ret) {
2515 IWL_ERR(mvm, "Failed to change PHY context\n");
2516 goto out_unlock;
2517 }
2518
2519 /* Unbind the P2P_DEVICE from the current PHY context */
2520 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2521 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2522 goto out_unlock;
2523
2524 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2525
2526 /* Bind the P2P_DEVICE to the new allocated PHY context */
2527 mvmvif->phy_ctxt = phy_ctxt;
2528
2529 ret = iwl_mvm_binding_add_vif(mvm, vif);
2530 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2531 goto out_unlock;
2532
2533 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2534 }
2535
2536schedule_time_event:
8ca151b5 2537 /* Schedule the time events */
e635c797 2538 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 2539
31d385ae 2540out_unlock:
8ca151b5
JB		 2541 mutex_unlock(&mvm->mutex);
2542 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 2543 return ret;
2544}
2545
2546static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2547{
2548 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2549
2550 IWL_DEBUG_MAC80211(mvm, "enter\n");
2551
2552 mutex_lock(&mvm->mutex);
2553 iwl_mvm_stop_p2p_roc(mvm);
2554 mutex_unlock(&mvm->mutex);
2555
2556 IWL_DEBUG_MAC80211(mvm, "leave\n");
2557 return 0;
2558}
2559
b08c1d97
LC		 2560static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2561 struct ieee80211_chanctx_conf *ctx)
8ca151b5 2562{
fe0f2de3
IP		 2563 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2564 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 2565 int ret;
2566
b08c1d97
LC		 2567 lockdep_assert_held(&mvm->mutex);
2568
53a9d61e 2569 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 2570
fe0f2de3
IP		 2571 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2572 if (!phy_ctxt) {
2573 ret = -ENOSPC;
2574 goto out;
2575 }
8ca151b5 2576
dcbc3e1a 2577 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
53a9d61e
IP		 2578 ctx->rx_chains_static,
2579 ctx->rx_chains_dynamic);
fe0f2de3
IP		 2580 if (ret) {
2581 IWL_ERR(mvm, "Failed to add PHY context\n");
2582 goto out;
2583 }
2584
53a9d61e 2585 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 2586 *phy_ctxt_id = phy_ctxt->id;
2587out:
b08c1d97
LC		 2588 return ret;
2589}
2590
2591static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2592 struct ieee80211_chanctx_conf *ctx)
2593{
2594 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2595 int ret;
2596
2597 mutex_lock(&mvm->mutex);
2598 ret = __iwl_mvm_add_chanctx(mvm, ctx);
8ca151b5 2599 mutex_unlock(&mvm->mutex);
b08c1d97 2600
8ca151b5
JB		 2601 return ret;
2602}
2603
b08c1d97
LC		 2604static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2605 struct ieee80211_chanctx_conf *ctx)
2606{
2607 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2608 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2609
2610 lockdep_assert_held(&mvm->mutex);
2611
2612 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2613}
2614
8ca151b5
JB		 2615static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2616 struct ieee80211_chanctx_conf *ctx)
2617{
2618 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 2619
2620 mutex_lock(&mvm->mutex);
b08c1d97 2621 __iwl_mvm_remove_chanctx(mvm, ctx);
8ca151b5
JB		 2622 mutex_unlock(&mvm->mutex);
2623}
2624
2625static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2626 struct ieee80211_chanctx_conf *ctx,
2627 u32 changed)
2628{
2629 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 2630 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2631 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 2632
31d385ae
IP		 2633 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2634 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2635 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2dceedae
AN		 2636 IEEE80211_CHANCTX_CHANGE_RADAR |
2637 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
31d385ae
IP		 2638 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2639 phy_ctxt->ref, changed))
2640 return;
2641
8ca151b5 2642 mutex_lock(&mvm->mutex);
4d66449a 2643 iwl_mvm_bt_coex_vif_change(mvm);
dcbc3e1a 2644 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
8ca151b5
JB		 2645 ctx->rx_chains_static,
2646 ctx->rx_chains_dynamic);
2647 mutex_unlock(&mvm->mutex);
2648}
2649
b08c1d97
LC		 2650static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2651 struct ieee80211_vif *vif,
f0c97783
LC		 2652 struct ieee80211_chanctx_conf *ctx,
2653 bool switching_chanctx)
8ca151b5 2654{
fe0f2de3
IP		 2655 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2656 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 2657 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2658 int ret;
2659
b08c1d97 2660 lockdep_assert_held(&mvm->mutex);
8ca151b5 2661
fe0f2de3 2662 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 2663
2664 switch (vif->type) {
2665 case NL80211_IFTYPE_AP:
bd3398e2
AO		 2666 /* Unless it's a CSA flow we have nothing to do here */
2667 if (vif->csa_active) {
2668 mvmvif->ap_ibss_active = true;
2669 break;
2670 }
5023d966 2671 case NL80211_IFTYPE_ADHOC:
8ca151b5
JB		 2672 /*
2673 * The AP binding flow is handled as part of the start_ap flow
5023d966 2674 * (in bss_info_changed), similarly for IBSS.
8ca151b5
JB		 2675 */
2676 ret = 0;
b08c1d97 2677 goto out;
8ca151b5 2678 case NL80211_IFTYPE_STATION:
8ca151b5
JB		 2679 case NL80211_IFTYPE_MONITOR:
2680 break;
2681 default:
2682 ret = -EINVAL;
b08c1d97 2683 goto out;
8ca151b5
JB		 2684 }
2685
2686 ret = iwl_mvm_binding_add_vif(mvm, vif);
2687 if (ret)
b08c1d97 2688 goto out;
8ca151b5
JB		 2689
2690 /*
92d85562
AB		 2691 * Power state must be updated before quotas,
2692 * otherwise fw will complain.
2693 */
999609f1 2694 iwl_mvm_power_update_mac(mvm);
92d85562
AB		 2695
2696 /* Setting the quota at this stage is only required for monitor
8ca151b5
JB		 2697 * interfaces. For the other types, the bss_info changed flow
2698 * will handle quota settings.
2699 */
2700 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 2701 mvmvif->monitor_active = true;
0166230c 2702 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 2703 if (ret)
2704 goto out_remove_binding;
2705 }
2706
bd3398e2 2707 /* Handle binding during CSA */
f0c97783
LC		 2708 if ((vif->type == NL80211_IFTYPE_AP) ||
2709 (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) {
0166230c 2710 iwl_mvm_update_quotas(mvm, NULL);
bca49d9a 2711 iwl_mvm_mac_ctxt_changed(mvm, vif, false);
bd3398e2
AO		 2712 }
2713
b08c1d97 2714 goto out;
8ca151b5 2715
b08c1d97 2716out_remove_binding:
8ca151b5 2717 iwl_mvm_binding_remove_vif(mvm, vif);
999609f1 2718 iwl_mvm_power_update_mac(mvm);
b08c1d97 2719out:
8ca151b5
JB		 2720 if (ret)
2721 mvmvif->phy_ctxt = NULL;
2722 return ret;
2723}
b08c1d97
LC		 2724static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2725 struct ieee80211_vif *vif,
2726 struct ieee80211_chanctx_conf *ctx)
8ca151b5
JB		 2727{
2728 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
b08c1d97 2729 int ret;
8ca151b5
JB		 2730
2731 mutex_lock(&mvm->mutex);
f0c97783 2732 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
b08c1d97
LC		 2733 mutex_unlock(&mvm->mutex);
2734
2735 return ret;
2736}
2737
2738static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2739 struct ieee80211_vif *vif,
f0c97783
LC		 2740 struct ieee80211_chanctx_conf *ctx,
2741 bool switching_chanctx)
b08c1d97
LC		 2742{
2743 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
f0c97783 2744 struct ieee80211_vif *disabled_vif = NULL;
b08c1d97
LC		 2745
2746 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 2747
2748 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2749
8ca151b5 2750 switch (vif->type) {
5023d966 2751 case NL80211_IFTYPE_ADHOC:
b08c1d97 2752 goto out;
8ca151b5 2753 case NL80211_IFTYPE_MONITOR:
1e1391ca 2754 mvmvif->monitor_active = false;
8ca151b5 2755 break;
bd3398e2
AO		 2756 case NL80211_IFTYPE_AP:
2757 /* This part is triggered only during CSA */
2758 if (!vif->csa_active || !mvmvif->ap_ibss_active)
b08c1d97 2759 goto out;
bd3398e2 2760
003e5236
AO		 2761 /* Set CS bit on all the stations */
2762 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2763
2764 /* Save blocked iface, the timeout is set on the next beacon */
2765 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2766
bd3398e2 2767 mvmvif->ap_ibss_active = false;
f0c97783
LC		 2768 break;
2769 case NL80211_IFTYPE_STATION:
2770 if (!switching_chanctx)
2771 break;
2772
2773 disabled_vif = vif;
2774
2775 iwl_mvm_mac_ctxt_changed(mvm, vif, true);
2776 break;
8ca151b5
JB		 2777 default:
2778 break;
2779 }
2780
f0c97783 2781 iwl_mvm_update_quotas(mvm, disabled_vif);
1e1391ca 2782 iwl_mvm_binding_remove_vif(mvm, vif);
1c2abf72 2783
b08c1d97 2784out:
a11e144e 2785 mvmvif->phy_ctxt = NULL;
999609f1 2786 iwl_mvm_power_update_mac(mvm);
b08c1d97
LC		 2787}
2788
2789static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2790 struct ieee80211_vif *vif,
2791 struct ieee80211_chanctx_conf *ctx)
2792{
2793 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2794
2795 mutex_lock(&mvm->mutex);
f0c97783 2796 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
8ca151b5
JB		 2797 mutex_unlock(&mvm->mutex);
2798}
2799
b08c1d97
LC		 2800static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
2801 struct ieee80211_vif_chanctx_switch *vifs,
2802 int n_vifs,
2803 enum ieee80211_chanctx_switch_mode mode)
2804{
2805 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2806 int ret;
2807
2808 /* we only support SWAP_CONTEXTS and with a single-vif right now */
2809 if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1)
2810 return -EOPNOTSUPP;
2811
2812 mutex_lock(&mvm->mutex);
f0c97783 2813 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
b08c1d97
LC		 2814 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2815
2816 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2817 if (ret) {
2818 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2819 goto out_reassign;
2820 }
2821
f0c97783
LC		 2822 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2823 true);
b08c1d97
LC		 2824 if (ret) {
2825 IWL_ERR(mvm,
2826 "failed to assign new_ctx during channel switch\n");
2827 goto out_remove;
2828 }
2829
2830 goto out;
2831
2832out_remove:
2833 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
2834
2835out_reassign:
2836 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx);
2837 if (ret) {
2838 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
2839 goto out_restart;
2840 }
2841
f0c97783
LC		 2842 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
2843 true);
b08c1d97
LC		 2844 if (ret) {
2845 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
2846 goto out_restart;
2847 }
2848
2849 goto out;
2850
2851out_restart:
2852 /* things keep failing, better restart the hw */
2853 iwl_mvm_nic_restart(mvm, false);
2854
2855out:
2856 mutex_unlock(&mvm->mutex);
2857 return ret;
2858}
2859
8ca151b5
JB		 2860static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2861 struct ieee80211_sta *sta,
2862 bool set)
2863{
2864 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2865 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2866
2867 if (!mvm_sta || !mvm_sta->vif) {
2868 IWL_ERR(mvm, "Station is not associated to a vif\n");
2869 return -EINVAL;
2870 }
2871
2872 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2873}
2874
507cadf2
DS		 2875#ifdef CONFIG_NL80211_TESTMODE
2876static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2877 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2878 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
f6c6ad42 2879 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
507cadf2
DS		 2880};
2881
2882static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
2883 struct ieee80211_vif *vif,
2884 void *data, int len)
2885{
2886 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
2887 int err;
2888 u32 noa_duration;
2889
2890 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
2891 if (err)
2892 return err;
2893
2894 if (!tb[IWL_MVM_TM_ATTR_CMD])
2895 return -EINVAL;
2896
2897 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
2898 case IWL_MVM_TM_CMD_SET_NOA:
2899 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
2900 !vif->bss_conf.enable_beacon ||
2901 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
2902 return -EINVAL;
2903
2904 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
2905 if (noa_duration >= vif->bss_conf.beacon_int)
2906 return -EINVAL;
2907
2908 mvm->noa_duration = noa_duration;
2909 mvm->noa_vif = vif;
2910
0166230c 2911 return iwl_mvm_update_quotas(mvm, NULL);
f6c6ad42
JB		 2912 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
2913 /* must be associated client vif - ignore authorized */
2914 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
2915 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
2916 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
2917 return -EINVAL;
2918
2919 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
a1022927
EG		 2920 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2921 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
507cadf2
DS		 2922 }
2923
2924 return -EOPNOTSUPP;
2925}
2926
2927static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
2928 struct ieee80211_vif *vif,
2929 void *data, int len)
2930{
2931 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2932 int err;
2933
2934 mutex_lock(&mvm->mutex);
2935 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
2936 mutex_unlock(&mvm->mutex);
2937
2938 return err;
2939}
2940#endif
2941
bd3398e2
AO		 2942static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
2943 struct ieee80211_vif *vif,
2944 struct cfg80211_chan_def *chandef)
2945{
2946 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
664322fa 2947 struct ieee80211_vif *csa_vif;
bd3398e2
AO		 2948
2949 mutex_lock(&mvm->mutex);
664322fa
AO		 2950
2951 csa_vif = rcu_dereference_protected(mvm->csa_vif,
2952 lockdep_is_held(&mvm->mutex));
2953 if (WARN(csa_vif && csa_vif->csa_active,
bd3398e2
AO		 2954 "Another CSA is already in progress"))
2955 goto out_unlock;
2956
2957 IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
2958 chandef->center_freq1);
664322fa 2959 rcu_assign_pointer(mvm->csa_vif, vif);
bd3398e2
AO		 2960
2961out_unlock:
2962 mutex_unlock(&mvm->mutex);
2963}
2964
c5b0e7c0
EG		 2965static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
2966 struct ieee80211_vif *vif, u32 queues, bool drop)
2967{
2968 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2969 struct iwl_mvm_vif *mvmvif;
2970 struct iwl_mvm_sta *mvmsta;
2971
2972 if (!vif || vif->type != NL80211_IFTYPE_STATION)
2973 return;
2974
2975 mutex_lock(&mvm->mutex);
2976 mvmvif = iwl_mvm_vif_from_mac80211(vif);
2977 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
2978
2979 if (WARN_ON_ONCE(!mvmsta))
2980 goto done;
2981
2982 if (drop) {
2983 if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
2984 IWL_ERR(mvm, "flush request fail\n");
2985 } else {
2986 iwl_trans_wait_tx_queue_empty(mvm->trans,
2987 mvmsta->tfd_queue_msk);
2988 }
2989done:
2990 mutex_unlock(&mvm->mutex);
2991}
2992
e5209263 2993const struct ieee80211_ops iwl_mvm_hw_ops = {
8ca151b5
JB		 2994 .tx = iwl_mvm_mac_tx,
2995 .ampdu_action = iwl_mvm_mac_ampdu_action,
2996 .start = iwl_mvm_mac_start,
2997 .restart_complete = iwl_mvm_mac_restart_complete,
2998 .stop = iwl_mvm_mac_stop,
2999 .add_interface = iwl_mvm_mac_add_interface,
3000 .remove_interface = iwl_mvm_mac_remove_interface,
3001 .config = iwl_mvm_mac_config,
e59647ea 3002 .prepare_multicast = iwl_mvm_prepare_multicast,
8ca151b5
JB		 3003 .configure_filter = iwl_mvm_configure_filter,
3004 .bss_info_changed = iwl_mvm_bss_info_changed,
3005 .hw_scan = iwl_mvm_mac_hw_scan,
3006 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1ddbbb0c 3007 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
8ca151b5
JB		 3008 .sta_state = iwl_mvm_mac_sta_state,
3009 .sta_notify = iwl_mvm_mac_sta_notify,
3010 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3e56eadf 3011 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
8ca151b5 3012 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1f3b0ff8 3013 .sta_rc_update = iwl_mvm_sta_rc_update,
8ca151b5
JB		 3014 .conf_tx = iwl_mvm_mac_conf_tx,
3015 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
07ecd897 3016 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
c5b0e7c0 3017 .flush = iwl_mvm_mac_flush,
35a000b7
DS		 3018 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3019 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
8ca151b5
JB		 3020 .set_key = iwl_mvm_mac_set_key,
3021 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3022 .remain_on_channel = iwl_mvm_roc,
3023 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
8ca151b5
JB		 3024 .add_chanctx = iwl_mvm_add_chanctx,
3025 .remove_chanctx = iwl_mvm_remove_chanctx,
3026 .change_chanctx = iwl_mvm_change_chanctx,
3027 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3028 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
b08c1d97 3029 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
8ca151b5 3030
5023d966
JB		 3031 .start_ap = iwl_mvm_start_ap_ibss,
3032 .stop_ap = iwl_mvm_stop_ap_ibss,
3033 .join_ibss = iwl_mvm_start_ap_ibss,
3034 .leave_ibss = iwl_mvm_stop_ap_ibss,
8ca151b5
JB		 3035
3036 .set_tim = iwl_mvm_set_tim,
3037
bd3398e2
AO		 3038 .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
3039
507cadf2
DS		 3040 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3041
8ca151b5
JB		 3042#ifdef CONFIG_PM_SLEEP
3043 /* look at d3.c */
3044 .suspend = iwl_mvm_suspend,
3045 .resume = iwl_mvm_resume,
3046 .set_wakeup = iwl_mvm_set_wakeup,
3047 .set_rekey_data = iwl_mvm_set_rekey_data,
3048#if IS_ENABLED(CONFIG_IPV6)
3049 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3050#endif
3051 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3052#endif
3053};
Linux kernel - Deliverables
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