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iwlwifi: dump CSRs to fw-error-dump
[mirror_ubuntu-bionic-kernel.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
CommitLineData
8ca151b5
JB		 1/******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
51368bf7 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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;
48eb7b34 679 struct iwl_mvm_dump_ptrs *fw_error_dump;
655e6d6d
EG		 680 const struct fw_img *img;
681 u32 sram_len, sram_ofs;
682 u32 file_len, rxf_len;
683 unsigned long flags;
655e6d6d
EG		 684 int reg_val;
685
686 lockdep_assert_held(&mvm->mutex);
687
688 if (mvm->fw_error_dump)
689 return;
690
48eb7b34
EG		 691 fw_error_dump = kzalloc(sizeof(*mvm->fw_error_dump), GFP_KERNEL);
692 if (!fw_error_dump)
693 return;
694
655e6d6d
EG		 695 img = &mvm->fw->img[mvm->cur_ucode];
696 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
697 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
698
699 /* reading buffer size */
700 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
701 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
702
703 /* the register holds the value divided by 128 */
704 rxf_len = rxf_len << 7;
705
706 file_len = sizeof(*dump_file) +
707 sizeof(*dump_data) * 3 +
708 sram_len +
709 rxf_len +
710 sizeof(*dump_info);
711
5bfe6f53 712 dump_file = vzalloc(file_len);
48eb7b34
EG		 713 if (!dump_file) {
714 kfree(fw_error_dump);
655e6d6d 715 return;
48eb7b34 716 }
655e6d6d 717
48eb7b34 718 fw_error_dump->op_mode_ptr = dump_file;
655e6d6d
EG		 719
720 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
655e6d6d
EG		 721 dump_data = (void *)dump_file->data;
722
723 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
724 dump_data->len = cpu_to_le32(sizeof(*dump_info));
725 dump_info = (void *) dump_data->data;
726 dump_info->device_family =
727 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
728 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
729 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
730 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
731 sizeof(dump_info->fw_human_readable));
732 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
733 sizeof(dump_info->dev_human_readable));
734 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
735 sizeof(dump_info->bus_human_readable));
736
737 dump_data = iwl_fw_error_next_data(dump_data);
738 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
739 dump_data->len = cpu_to_le32(rxf_len);
740
741 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
742 u32 *rxf = (void *)dump_data->data;
743 int i;
744
745 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
746 iwl_trans_write_prph(mvm->trans,
747 RXF_LD_FENCE_OFFSET_ADDR,
748 i * sizeof(u32));
749 rxf[i] = iwl_trans_read_prph(mvm->trans,
750 RXF_FIFO_RD_FENCE_ADDR);
751 }
752 iwl_trans_release_nic_access(mvm->trans, &flags);
753 }
754
755 dump_data = iwl_fw_error_next_data(dump_data);
756 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
757 dump_data->len = cpu_to_le32(sram_len);
758 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
759 sram_len);
760
48eb7b34
EG		 761 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
762 fw_error_dump->op_mode_len = file_len;
763 if (fw_error_dump->trans_ptr)
764 file_len += fw_error_dump->trans_ptr->len;
765 dump_file->file_len = cpu_to_le32(file_len);
766 mvm->fw_error_dump = fw_error_dump;
655e6d6d
EG		 767}
768#endif
769
8ca151b5
JB		 770static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
771{
1bd3cbc1
EG		 772#ifdef CONFIG_IWLWIFI_DEBUGFS
773 static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL };
774
775 iwl_mvm_fw_error_dump(mvm);
776
777 /* notify the userspace about the error we had */
778 kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env);
779#endif
780
8ca151b5 781 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 782
783 mvm->scan_status = IWL_MVM_SCAN_NONE;
784
785 /* just in case one was running */
786 ieee80211_remain_on_channel_expired(mvm->hw);
787
788 ieee80211_iterate_active_interfaces_atomic(
789 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
790 iwl_mvm_cleanup_iterator, mvm);
791
fe0f2de3 792 mvm->p2p_device_vif = NULL;
37577fe2 793 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
fe0f2de3
IP		 794
795 iwl_mvm_reset_phy_ctxts(mvm);
8ca151b5
JB		 796 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
797 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
798
799 ieee80211_wake_queues(mvm->hw);
800
7498cf4c
EP		 801 /* cleanup all stale references (scan, roc), but keep the
802 * ucode_down ref until reconfig is complete */
803 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
804
8ca151b5 805 mvm->vif_count = 0;
113a0447 806 mvm->rx_ba_sessions = 0;
8ca151b5
JB		 807}
808
809static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
810{
811 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
812 int ret;
813
814 mutex_lock(&mvm->mutex);
815
816 /* Clean up some internal and mac80211 state on restart */
817 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
818 iwl_mvm_restart_cleanup(mvm);
819
820 ret = iwl_mvm_up(mvm);
c47af22a
JB		 821
822 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
823 /* Something went wrong - we need to finish some cleanup
824 * that normally iwl_mvm_mac_restart_complete() below
825 * would do.
826 */
827 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
828 iwl_mvm_d0i3_enable_tx(mvm, NULL);
829 }
830
8ca151b5
JB		 831 mutex_unlock(&mvm->mutex);
832
833 return ret;
834}
835
836static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
837{
838 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
839 int ret;
840
841 mutex_lock(&mvm->mutex);
842
843 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
b2492501 844 iwl_mvm_d0i3_enable_tx(mvm, NULL);
0166230c 845 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 846 if (ret)
847 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
848 ret);
849
7498cf4c
EP		 850 /* allow transport/FW low power modes */
851 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
852
8ca151b5
JB		 853 mutex_unlock(&mvm->mutex);
854}
855
856static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
857{
858 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
859
37577fe2 860 flush_work(&mvm->d0i3_exit_work);
8ca151b5
JB		 861 flush_work(&mvm->async_handlers_wk);
862
863 mutex_lock(&mvm->mutex);
7498cf4c
EP		 864
865 /* disallow low power states when the FW is down */
866 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
867
8ca151b5
JB		 868 /* async_handlers_wk is now blocked */
869
870 /*
871 * The work item could be running or queued if the
872 * ROC time event stops just as we get here.
873 */
874 cancel_work_sync(&mvm->roc_done_wk);
875
876 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 877
878 iwl_mvm_async_handlers_purge(mvm);
879 /* async_handlers_list is empty and will stay empty: HW is stopped */
880
881 /* the fw is stopped, the aux sta is dead: clean up driver state */
882 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
883
884 mutex_unlock(&mvm->mutex);
885
886 /*
887 * The worker might have been waiting for the mutex, let it run and
888 * discover that its list is now empty.
889 */
890 cancel_work_sync(&mvm->async_handlers_wk);
891}
892
fe0f2de3
IP		 893static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
894{
895 u16 i;
896
897 lockdep_assert_held(&mvm->mutex);
898
899 for (i = 0; i < NUM_PHY_CTX; i++)
900 if (!mvm->phy_ctxts[i].ref)
901 return &mvm->phy_ctxts[i];
902
903 IWL_ERR(mvm, "No available PHY context\n");
904 return NULL;
905}
906
ee9c6cb0
EG		 907static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
908 s8 tx_power)
909{
910 /* FW is in charge of regulatory enforcement */
911 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
912 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
913 .pwr_restriction = cpu_to_le16(tx_power),
914 };
915
a1022927 916 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
ee9c6cb0
EG		 917 sizeof(reduce_txpwr_cmd),
918 &reduce_txpwr_cmd);
919}
920
8ca151b5
JB		 921static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
922 struct ieee80211_vif *vif)
923{
924 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
925 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
926 int ret;
927
d40fc489
GG		 928 /*
929 * make sure D0i3 exit is completed, otherwise a target access
930 * during tx queue configuration could be done when still in
931 * D0i3 state.
932 */
933 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
934 if (ret)
935 return ret;
936
8ca151b5
JB		 937 /*
938 * Not much to do here. The stack will not allow interface
939 * types or combinations that we didn't advertise, so we
940 * don't really have to check the types.
941 */
942
943 mutex_lock(&mvm->mutex);
944
e89044d7 945 /* Allocate resources for the MAC context, and add it to the fw */
8ca151b5
JB		 946 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
947 if (ret)
948 goto out_unlock;
949
1c2abf72 950 /* Counting number of interfaces is needed for legacy PM */
ea183d02
IP		 951 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
952 mvm->vif_count++;
ea183d02 953
8ca151b5
JB		 954 /*
955 * The AP binding flow can be done only after the beacon
956 * template is configured (which happens only in the mac80211
957 * start_ap() flow), and adding the broadcast station can happen
958 * only after the binding.
959 * In addition, since modifying the MAC before adding a bcast
960 * station is not allowed by the FW, delay the adding of MAC context to
961 * the point where we can also add the bcast station.
962 * In short: there's not much we can do at this point, other than
963 * allocating resources :)
964 */
5023d966
JB		 965 if (vif->type == NL80211_IFTYPE_AP ||
966 vif->type == NL80211_IFTYPE_ADHOC) {
8ca151b5
JB		 967 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
968 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
b92e661b
EP		 969 qmask,
970 ieee80211_vif_type_p2p(vif));
8ca151b5
JB		 971 if (ret) {
972 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
973 goto out_release;
974 }
975
77740cb4 976 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 977 goto out_unlock;
978 }
979
8ca151b5
JB		 980 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
981 if (ret)
982 goto out_release;
983
999609f1 984 ret = iwl_mvm_power_update_mac(mvm);
e5e7aa8e
EG		 985 if (ret)
986 goto out_release;
8ca151b5 987
7df15b1e 988 /* beacon filtering */
a1022927 989 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
bd3351ba
EP		 990 if (ret)
991 goto out_remove_mac;
992
7df15b1e 993 if (!mvm->bf_allowed_vif &&
73e5f2c5 994 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
7df15b1e 995 mvm->bf_allowed_vif = mvmvif;
a20fd398
AO		 996 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
997 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
7df15b1e
HG		 998 }
999
8ca151b5
JB		 1000 /*
1001 * P2P_DEVICE interface does not have a channel context assigned to it,
1002 * so a dedicated PHY context is allocated to it and the corresponding
1003 * MAC context is bound to it at this stage.
1004 */
1005 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 1006
fe0f2de3
IP		 1007 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1008 if (!mvmvif->phy_ctxt) {
1009 ret = -ENOSPC;
bd3351ba 1010 goto out_free_bf;
fe0f2de3 1011 }
8ca151b5 1012
53a9d61e 1013 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1014 ret = iwl_mvm_binding_add_vif(mvm, vif);
1015 if (ret)
53a9d61e 1016 goto out_unref_phy;
8ca151b5
JB		 1017
1018 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1019 if (ret)
1020 goto out_unbind;
1021
1022 /* Save a pointer to p2p device vif, so it can later be used to
1023 * update the p2p device MAC when a GO is started/stopped */
1024 mvm->p2p_device_vif = vif;
1025 }
1026
63494374 1027 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1028 goto out_unlock;
1029
1030 out_unbind:
1031 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 1032 out_unref_phy:
fe0f2de3 1033 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
bd3351ba
EP		 1034 out_free_bf:
1035 if (mvm->bf_allowed_vif == mvmvif) {
1036 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1037 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1038 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
bd3351ba 1039 }
8ca151b5
JB		 1040 out_remove_mac:
1041 mvmvif->phy_ctxt = NULL;
1042 iwl_mvm_mac_ctxt_remove(mvm, vif);
1043 out_release:
5ee2b215
AB		 1044 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1045 mvm->vif_count--;
1c2abf72 1046
8ca151b5
JB		 1047 iwl_mvm_mac_ctxt_release(mvm, vif);
1048 out_unlock:
1049 mutex_unlock(&mvm->mutex);
1050
d40fc489
GG		 1051 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1052
8ca151b5
JB		 1053 return ret;
1054}
1055
38a12b5b
JB		 1056static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1057 struct ieee80211_vif *vif)
8ca151b5 1058{
8ca151b5
JB		 1059 u32 tfd_msk = 0, ac;
1060
1061 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1062 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
1063 tfd_msk |= BIT(vif->hw_queue[ac]);
1064
1065 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
1066 tfd_msk |= BIT(vif->cab_queue);
1067
1068 if (tfd_msk) {
1069 mutex_lock(&mvm->mutex);
1070 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1071 mutex_unlock(&mvm->mutex);
1072 }
1073
1074 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1075 /*
1076 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1077 * We assume here that all the packets sent to the OFFCHANNEL
1078 * queue are sent in ROC session.
1079 */
1080 flush_work(&mvm->roc_done_wk);
1081 } else {
1082 /*
1083 * By now, all the AC queues are empty. The AGG queues are
1084 * empty too. We already got all the Tx responses for all the
1085 * packets in the queues. The drain work can have been
0742a75a 1086 * triggered. Flush it.
8ca151b5
JB		 1087 */
1088 flush_work(&mvm->sta_drained_wk);
1089 }
38a12b5b
JB		 1090}
1091
1092static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1093 struct ieee80211_vif *vif)
1094{
1095 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1096 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1097
1098 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 1099
1100 mutex_lock(&mvm->mutex);
1101
7df15b1e
HG		 1102 if (mvm->bf_allowed_vif == mvmvif) {
1103 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1104 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1105 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
7df15b1e
HG		 1106 }
1107
63494374
JB		 1108 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1109
8ca151b5
JB		 1110 /*
1111 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 1112 * interface is be handled as part of the stop_ap flow.
8ca151b5 1113 */
5023d966
JB		 1114 if (vif->type == NL80211_IFTYPE_AP ||
1115 vif->type == NL80211_IFTYPE_ADHOC) {
507cadf2
DS		 1116#ifdef CONFIG_NL80211_TESTMODE
1117 if (vif == mvm->noa_vif) {
1118 mvm->noa_vif = NULL;
1119 mvm->noa_duration = 0;
1120 }
1121#endif
8ca151b5
JB		 1122 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
1123 goto out_release;
1124 }
1125
1126 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1127 mvm->p2p_device_vif = NULL;
1128 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1129 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 1130 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1131 mvmvif->phy_ctxt = NULL;
1132 }
1133
5ee2b215 1134 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5 1135 mvm->vif_count--;
1c2abf72 1136
999609f1 1137 iwl_mvm_power_update_mac(mvm);
8ca151b5
JB		 1138 iwl_mvm_mac_ctxt_remove(mvm, vif);
1139
1140out_release:
1141 iwl_mvm_mac_ctxt_release(mvm, vif);
1142 mutex_unlock(&mvm->mutex);
1143}
1144
1145static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
88f2fd73 1146{
8ca151b5
JB		 1147 return 0;
1148}
1149
e59647ea
EP		 1150struct iwl_mvm_mc_iter_data {
1151 struct iwl_mvm *mvm;
1152 int port_id;
1153};
1154
1155static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1156 struct ieee80211_vif *vif)
1157{
1158 struct iwl_mvm_mc_iter_data *data = _data;
1159 struct iwl_mvm *mvm = data->mvm;
1160 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1161 int ret, len;
1162
1163 /* if we don't have free ports, mcast frames will be dropped */
1164 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1165 return;
1166
1167 if (vif->type != NL80211_IFTYPE_STATION ||
1168 !vif->bss_conf.assoc)
1169 return;
1170
1171 cmd->port_id = data->port_id++;
1172 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1173 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1174
1c4abec0 1175 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
e59647ea
EP		 1176 if (ret)
1177 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1178}
1179
1180static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1181{
1182 struct iwl_mvm_mc_iter_data iter_data = {
1183 .mvm = mvm,
88f2fd73
MG		 1184 };
1185
e59647ea
EP		 1186 lockdep_assert_held(&mvm->mutex);
1187
1188 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1189 return;
1190
1c4abec0 1191 ieee80211_iterate_active_interfaces_atomic(
e59647ea
EP		 1192 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1193 iwl_mvm_mc_iface_iterator, &iter_data);
88f2fd73
MG		 1194}
1195
e59647ea
EP		 1196static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1197 struct netdev_hw_addr_list *mc_list)
8ca151b5 1198{
e59647ea
EP		 1199 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1200 struct iwl_mcast_filter_cmd *cmd;
1201 struct netdev_hw_addr *addr;
1202 int addr_count = netdev_hw_addr_list_count(mc_list);
1203 bool pass_all = false;
1204 int len;
1205
1206 if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) {
1207 pass_all = true;
1208 addr_count = 0;
1209 }
1210
1211 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1212 cmd = kzalloc(len, GFP_ATOMIC);
1213 if (!cmd)
1214 return 0;
1215
1216 if (pass_all) {
1217 cmd->pass_all = 1;
1218 return (u64)(unsigned long)cmd;
1219 }
1220
1221 netdev_hw_addr_list_for_each(addr, mc_list) {
1222 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1223 cmd->count, addr->addr);
1224 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1225 addr->addr, ETH_ALEN);
1226 cmd->count++;
1227 }
1228
1229 return (u64)(unsigned long)cmd;
8ca151b5
JB		 1230}
1231
1232static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1233 unsigned int changed_flags,
1234 unsigned int *total_flags,
1235 u64 multicast)
1236{
e59647ea
EP		 1237 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1238 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
8ca151b5 1239
e59647ea 1240 mutex_lock(&mvm->mutex);
51b6b9e0 1241
e59647ea
EP		 1242 /* replace previous configuration */
1243 kfree(mvm->mcast_filter_cmd);
1244 mvm->mcast_filter_cmd = cmd;
51b6b9e0 1245
e59647ea
EP		 1246 if (!cmd)
1247 goto out;
51b6b9e0 1248
e59647ea
EP		 1249 iwl_mvm_recalc_multicast(mvm);
1250out:
1251 mutex_unlock(&mvm->mutex);
1252 *total_flags = 0;
51b6b9e0
EG		 1253}
1254
c87163b9
EP		 1255#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1256struct iwl_bcast_iter_data {
1257 struct iwl_mvm *mvm;
1258 struct iwl_bcast_filter_cmd *cmd;
1259 u8 current_filter;
1260};
1261
1262static void
1263iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1264 const struct iwl_fw_bcast_filter *in_filter,
1265 struct iwl_fw_bcast_filter *out_filter)
1266{
1267 struct iwl_fw_bcast_filter_attr *attr;
1268 int i;
1269
1270 memcpy(out_filter, in_filter, sizeof(*out_filter));
1271
1272 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1273 attr = &out_filter->attrs[i];
1274
1275 if (!attr->mask)
1276 break;
1277
2ee8f021
EP		 1278 switch (attr->reserved1) {
1279 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1280 if (vif->bss_conf.arp_addr_cnt != 1) {
1281 attr->mask = 0;
1282 continue;
1283 }
1284
1285 attr->val = vif->bss_conf.arp_addr_list[0];
1286 break;
1287 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1288 attr->val = *(__be32 *)&vif->addr[2];
1289 break;
1290 default:
1291 break;
1292 }
1293 attr->reserved1 = 0;
c87163b9
EP		 1294 out_filter->num_attrs++;
1295 }
1296}
1297
1298static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1299 struct ieee80211_vif *vif)
1300{
1301 struct iwl_bcast_iter_data *data = _data;
1302 struct iwl_mvm *mvm = data->mvm;
1303 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1304 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1305 struct iwl_fw_bcast_mac *bcast_mac;
1306 int i;
1307
1308 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1309 return;
1310
1311 bcast_mac = &cmd->macs[mvmvif->id];
1312
e48393e8
IP		 1313 /*
1314 * enable filtering only for associated stations, but not for P2P
1315 * Clients
1316 */
1317 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1318 !vif->bss_conf.assoc)
c87163b9
EP		 1319 return;
1320
1321 bcast_mac->default_discard = 1;
1322
1323 /* copy all configured filters */
1324 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1325 /*
1326 * Make sure we don't exceed our filters limit.
1327 * if there is still a valid filter to be configured,
1328 * be on the safe side and just allow bcast for this mac.
1329 */
1330 if (WARN_ON_ONCE(data->current_filter >=
1331 ARRAY_SIZE(cmd->filters))) {
1332 bcast_mac->default_discard = 0;
1333 bcast_mac->attached_filters = 0;
1334 break;
1335 }
1336
1337 iwl_mvm_set_bcast_filter(vif,
1338 &mvm->bcast_filters[i],
1339 &cmd->filters[data->current_filter]);
1340
1341 /* skip current filter if it contains no attributes */
1342 if (!cmd->filters[data->current_filter].num_attrs)
1343 continue;
1344
1345 /* attach the filter to current mac */
1346 bcast_mac->attached_filters |=
1347 cpu_to_le16(BIT(data->current_filter));
1348
1349 data->current_filter++;
1350 }
1351}
1352
de06a59e
EP		 1353bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1354 struct iwl_bcast_filter_cmd *cmd)
c87163b9 1355{
c87163b9
EP		 1356 struct iwl_bcast_iter_data iter_data = {
1357 .mvm = mvm,
de06a59e 1358 .cmd = cmd,
c87163b9
EP		 1359 };
1360
de06a59e
EP		 1361 memset(cmd, 0, sizeof(*cmd));
1362 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1363 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1364
1365#ifdef CONFIG_IWLWIFI_DEBUGFS
1366 /* use debugfs filters/macs if override is configured */
1367 if (mvm->dbgfs_bcast_filtering.override) {
1368 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1369 sizeof(cmd->filters));
1370 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1371 sizeof(cmd->macs));
1372 return true;
1373 }
1374#endif
c87163b9
EP		 1375
1376 /* if no filters are configured, do nothing */
1377 if (!mvm->bcast_filters)
de06a59e 1378 return false;
c87163b9
EP		 1379
1380 /* configure and attach these filters for each associated sta vif */
1381 ieee80211_iterate_active_interfaces(
1382 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1383 iwl_mvm_bcast_filter_iterator, &iter_data);
1384
de06a59e
EP		 1385 return true;
1386}
1387static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1388 struct ieee80211_vif *vif)
1389{
1390 struct iwl_bcast_filter_cmd cmd;
1391
1392 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1393 return 0;
1394
1395 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1396 return 0;
1397
a1022927 1398 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
c87163b9
EP		 1399 sizeof(cmd), &cmd);
1400}
1401#else
1402static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1403 struct ieee80211_vif *vif)
1404{
1405 return 0;
1406}
1407#endif
1408
8ca151b5
JB		 1409static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1410 struct ieee80211_vif *vif,
1411 struct ieee80211_bss_conf *bss_conf,
1412 u32 changes)
1413{
1414 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1415 int ret;
1416
6e97b0d2
IP		 1417 /*
1418 * Re-calculate the tsf id, as the master-slave relations depend on the
1419 * beacon interval, which was not known when the station interface was
1420 * added.
1421 */
1422 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1423 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1424
bca49d9a 1425 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false);
8ca151b5
JB		 1426 if (ret)
1427 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1428
1429 if (changes & BSS_CHANGED_ASSOC) {
1430 if (bss_conf->assoc) {
1431 /* add quota for this interface */
0166230c 1432 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1433 if (ret) {
1434 IWL_ERR(mvm, "failed to update quotas\n");
1435 return;
1436 }
016d27e1
JB		 1437
1438 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1439 &mvm->status)) {
1440 /*
1441 * If we're restarting then the firmware will
1442 * obviously have lost synchronisation with
1443 * the AP. It will attempt to synchronise by
1444 * itself, but we can make it more reliable by
1445 * scheduling a session protection time event.
1446 *
1447 * The firmware needs to receive a beacon to
1448 * catch up with synchronisation, use 110% of
1449 * the beacon interval.
1450 *
1451 * Set a large maximum delay to allow for more
1452 * than a single interface.
1453 */
1454 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1455 iwl_mvm_protect_session(mvm, vif, dur, dur,
1456 5 * dur);
1457 }
1f3b0ff8
LE		 1458
1459 iwl_mvm_sf_update(mvm, vif, false);
175a70b7 1460 iwl_mvm_power_vif_assoc(mvm, vif);
29a90a49
EP		 1461 if (vif->p2p)
1462 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
8ca151b5 1463 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1f3b0ff8
LE		 1464 /*
1465 * If update fails - SF might be running in associated
1466 * mode while disassociated - which is forbidden.
1467 */
1468 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1469 "Failed to update SF upon disassociation\n");
1470
8ca151b5
JB		 1471 /* remove AP station now that the MAC is unassoc */
1472 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1473 if (ret)
1474 IWL_ERR(mvm, "failed to remove AP station\n");
37577fe2
EP		 1475
1476 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1477 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
8ca151b5
JB		 1478 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1479 /* remove quota for this interface */
0166230c 1480 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1481 if (ret)
1482 IWL_ERR(mvm, "failed to update quotas\n");
29a90a49
EP		 1483
1484 if (vif->p2p)
1485 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
8ca151b5 1486 }
a20fd398 1487
e59647ea 1488 iwl_mvm_recalc_multicast(mvm);
c87163b9 1489 iwl_mvm_configure_bcast_filter(mvm, vif);
e59647ea 1490
a20fd398
AO		 1491 /* reset rssi values */
1492 mvmvif->bf_data.ave_beacon_signal = 0;
1493
8e484f0b 1494 iwl_mvm_bt_coex_vif_change(mvm);
f94045ed
EG		 1495 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1496 IEEE80211_SMPS_AUTOMATIC);
989c6505 1497 } else if (changes & BSS_CHANGED_BEACON_INFO) {
210a544e
JB		 1498 /*
1499 * We received a beacon _after_ association so
1500 * remove the session protection.
1501 */
1502 iwl_mvm_remove_time_event(mvm, mvmvif,
1503 &mvmvif->time_event_data);
0229cdaf 1504 iwl_mvm_sf_update(mvm, vif, false);
a1022927 1505 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
51498cf6
AB		 1506 } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
1507 BSS_CHANGED_QOS)) {
999609f1 1508 ret = iwl_mvm_power_update_mac(mvm);
4bf881f5
AB		 1509 if (ret)
1510 IWL_ERR(mvm, "failed to update power mode\n");
8ca151b5 1511 }
88f2fd73
MG		 1512 if (changes & BSS_CHANGED_TXPOWER) {
1513 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1514 bss_conf->txpower);
1515 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1516 }
a20fd398
AO		 1517
1518 if (changes & BSS_CHANGED_CQM) {
3c6acb61 1519 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
a20fd398
AO		 1520 /* reset cqm events tracking */
1521 mvmvif->bf_data.last_cqm_event = 0;
fa7b2e7f
AA		 1522 if (mvmvif->bf_data.bf_enabled) {
1523 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1524 if (ret)
1525 IWL_ERR(mvm,
1526 "failed to update CQM thresholds\n");
1527 }
a20fd398 1528 }
2ee8f021
EP		 1529
1530 if (changes & BSS_CHANGED_ARP_FILTER) {
3c6acb61 1531 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2ee8f021
EP		 1532 iwl_mvm_configure_bcast_filter(mvm, vif);
1533 }
8ca151b5
JB		 1534}
1535
5023d966
JB		 1536static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1537 struct ieee80211_vif *vif)
8ca151b5
JB		 1538{
1539 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1540 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1541 int ret;
1542
576eeee9
EP		 1543 /*
1544 * iwl_mvm_mac_ctxt_add() might read directly from the device
1545 * (the system time), so make sure it is available.
1546 */
1547 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1548 if (ret)
1549 return ret;
1550
8ca151b5
JB		 1551 mutex_lock(&mvm->mutex);
1552
1553 /* Send the beacon template */
1554 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1555 if (ret)
1556 goto out_unlock;
1557
6e97b0d2
IP		 1558 /*
1559 * Re-calculate the tsf id, as the master-slave relations depend on the
1560 * beacon interval, which was not known when the AP interface was added.
1561 */
1562 if (vif->type == NL80211_IFTYPE_AP)
1563 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1564
8ca151b5
JB		 1565 /* Add the mac context */
1566 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1567 if (ret)
1568 goto out_unlock;
1569
1570 /* Perform the binding */
1571 ret = iwl_mvm_binding_add_vif(mvm, vif);
1572 if (ret)
1573 goto out_remove;
1574
8ca151b5
JB		 1575 /* Send the bcast station. At this stage the TBTT and DTIM time events
1576 * are added and applied to the scheduler */
1577 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1578 if (ret)
1579 goto out_unbind;
1580
5691e218
IP		 1581 /* must be set before quota calculations */
1582 mvmvif->ap_ibss_active = true;
1583
a11e144e 1584 /* power updated needs to be done before quotas */
999609f1 1585 iwl_mvm_power_update_mac(mvm);
a11e144e 1586
0166230c 1587 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5 1588 if (ret)
a11e144e 1589 goto out_quota_failed;
8ca151b5 1590
5023d966 1591 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1592 if (vif->p2p && mvm->p2p_device_vif)
bca49d9a 1593 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
8ca151b5 1594
29a90a49
EP		 1595 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1596
8e484f0b 1597 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1598
8ca151b5
JB		 1599 mutex_unlock(&mvm->mutex);
1600 return 0;
1601
a11e144e 1602out_quota_failed:
999609f1 1603 iwl_mvm_power_update_mac(mvm);
5691e218 1604 mvmvif->ap_ibss_active = false;
8ca151b5
JB		 1605 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1606out_unbind:
1607 iwl_mvm_binding_remove_vif(mvm, vif);
1608out_remove:
1609 iwl_mvm_mac_ctxt_remove(mvm, vif);
1610out_unlock:
1611 mutex_unlock(&mvm->mutex);
576eeee9 1612 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
8ca151b5
JB		 1613 return ret;
1614}
1615
5023d966
JB		 1616static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1617 struct ieee80211_vif *vif)
8ca151b5
JB		 1618{
1619 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1620 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1621
38a12b5b
JB		 1622 iwl_mvm_prepare_mac_removal(mvm, vif);
1623
8ca151b5
JB		 1624 mutex_lock(&mvm->mutex);
1625
664322fa 1626 /* Handle AP stop while in CSA */
7f0a7c67
AO		 1627 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1628 iwl_mvm_remove_time_event(mvm, mvmvif,
1629 &mvmvif->time_event_data);
664322fa 1630 RCU_INIT_POINTER(mvm->csa_vif, NULL);
7f0a7c67 1631 }
664322fa 1632
003e5236
AO		 1633 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1634 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1635 mvm->csa_tx_block_bcn_timeout = 0;
1636 }
1637
5023d966 1638 mvmvif->ap_ibss_active = false;
1c87bbad 1639 mvm->ap_last_beacon_gp2 = 0;
8ca151b5 1640
8e484f0b 1641 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1642
29a90a49
EP		 1643 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1644
5023d966 1645 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1646 if (vif->p2p && mvm->p2p_device_vif)
bca49d9a 1647 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
8ca151b5 1648
0166230c 1649 iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1650 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1651 iwl_mvm_binding_remove_vif(mvm, vif);
a11e144e 1652
999609f1 1653 iwl_mvm_power_update_mac(mvm);
a11e144e 1654
8ca151b5
JB		 1655 iwl_mvm_mac_ctxt_remove(mvm, vif);
1656
1657 mutex_unlock(&mvm->mutex);
1658}
1659
5023d966
JB		 1660static void
1661iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1662 struct ieee80211_vif *vif,
1663 struct ieee80211_bss_conf *bss_conf,
1664 u32 changes)
8ca151b5 1665{
be2056fc 1666 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8a5e3660 1667
be2056fc
IP		 1668 /* Changes will be applied when the AP/IBSS is started */
1669 if (!mvmvif->ap_ibss_active)
1670 return;
1671
863230da
JB		 1672 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1673 BSS_CHANGED_BANDWIDTH) &&
bca49d9a 1674 iwl_mvm_mac_ctxt_changed(mvm, vif, false))
863230da 1675 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
8a5e3660 1676
8ca151b5 1677 /* Need to send a new beacon template to the FW */
863230da
JB		 1678 if (changes & BSS_CHANGED_BEACON &&
1679 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1680 IWL_WARN(mvm, "Failed updating beacon data\n");
8ca151b5
JB		 1681}
1682
1683static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1684 struct ieee80211_vif *vif,
1685 struct ieee80211_bss_conf *bss_conf,
1686 u32 changes)
1687{
1688 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1689
576eeee9
EP		 1690 /*
1691 * iwl_mvm_bss_info_changed_station() might call
1692 * iwl_mvm_protect_session(), which reads directly from
1693 * the device (the system time), so make sure it is available.
1694 */
1695 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1696 return;
1697
8ca151b5
JB		 1698 mutex_lock(&mvm->mutex);
1699
723f02ed 1700 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
fb98be5e 1701 iwl_mvm_scan_offload_stop(mvm, true);
723f02ed 1702
8ca151b5
JB		 1703 switch (vif->type) {
1704 case NL80211_IFTYPE_STATION:
1705 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1706 break;
1707 case NL80211_IFTYPE_AP:
5023d966
JB		 1708 case NL80211_IFTYPE_ADHOC:
1709 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
8ca151b5
JB		 1710 break;
1711 default:
1712 /* shouldn't happen */
1713 WARN_ON_ONCE(1);
1714 }
1715
1716 mutex_unlock(&mvm->mutex);
576eeee9 1717 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
8ca151b5
JB		 1718}
1719
4660dfbb
EP		 1720static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1721 enum iwl_scan_status scan_type)
1722{
1723 int ret;
1724 bool wait_for_handlers = false;
1725
1726 mutex_lock(&mvm->mutex);
1727
1728 if (mvm->scan_status != scan_type) {
1729 ret = 0;
1730 /* make sure there are no pending notifications */
1731 wait_for_handlers = true;
1732 goto out;
1733 }
1734
1735 switch (scan_type) {
1736 case IWL_MVM_SCAN_SCHED:
1737 ret = iwl_mvm_scan_offload_stop(mvm, true);
1738 break;
1739 case IWL_MVM_SCAN_OS:
1740 ret = iwl_mvm_cancel_scan(mvm);
1741 break;
1742 case IWL_MVM_SCAN_NONE:
1743 default:
1744 WARN_ON_ONCE(1);
1745 ret = -EINVAL;
1746 break;
1747 }
1748 if (ret)
1749 goto out;
1750
1751 wait_for_handlers = true;
1752out:
1753 mutex_unlock(&mvm->mutex);
1754
1755 /* make sure we consume the completion notification */
1756 if (wait_for_handlers)
1757 iwl_mvm_wait_for_async_handlers(mvm);
1758
1759 return ret;
1760}
8ca151b5
JB		 1761static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1762 struct ieee80211_vif *vif,
c56ef672 1763 struct ieee80211_scan_request *hw_req)
8ca151b5
JB		 1764{
1765 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
c56ef672 1766 struct cfg80211_scan_request *req = &hw_req->req;
8ca151b5
JB		 1767 int ret;
1768
762533ba
DS		 1769 if (req->n_channels == 0 ||
1770 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
8ca151b5
JB		 1771 return -EINVAL;
1772
4660dfbb
EP		 1773 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1774 if (ret)
1775 return ret;
1776
8ca151b5
JB		 1777 mutex_lock(&mvm->mutex);
1778
4660dfbb 1779 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
8ca151b5 1780 ret = -EBUSY;
519e2026
AN		 1781 goto out;
1782 }
8ca151b5 1783
519e2026
AN		 1784 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1785
fb98be5e
DS		 1786 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1787 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1788 else
1789 ret = iwl_mvm_scan_request(mvm, vif, req);
1790
519e2026
AN		 1791 if (ret)
1792 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1793out:
8ca151b5 1794 mutex_unlock(&mvm->mutex);
8ca151b5
JB		 1795 return ret;
1796}
1797
1798static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1799 struct ieee80211_vif *vif)
1800{
1801 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1802
1803 mutex_lock(&mvm->mutex);
1804
1805 iwl_mvm_cancel_scan(mvm);
1806
1807 mutex_unlock(&mvm->mutex);
1808}
1809
1810static void
1811iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
3e56eadf 1812 struct ieee80211_sta *sta, u16 tids,
8ca151b5
JB		 1813 int num_frames,
1814 enum ieee80211_frame_release_type reason,
1815 bool more_data)
1816{
1817 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5 1818
3e56eadf 1819 /* Called when we need to transmit (a) frame(s) from mac80211 */
8ca151b5 1820
3e56eadf
JB		 1821 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1822 tids, more_data, false);
1823}
1824
1825static void
1826iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1827 struct ieee80211_sta *sta, u16 tids,
1828 int num_frames,
1829 enum ieee80211_frame_release_type reason,
1830 bool more_data)
1831{
1832 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1833
1834 /* Called when we need to transmit (a) frame(s) from agg queue */
1835
1836 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1837 tids, more_data, true);
8ca151b5
JB		 1838}
1839
1840static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1841 struct ieee80211_vif *vif,
1842 enum sta_notify_cmd cmd,
1843 struct ieee80211_sta *sta)
1844{
1845 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5b577a90 1846 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3e56eadf 1847 int tid;
8ca151b5
JB		 1848
1849 switch (cmd) {
1850 case STA_NOTIFY_SLEEP:
e3d4bc8c 1851 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5 1852 ieee80211_sta_block_awake(hw, sta, true);
3e56eadf
JB		 1853 spin_lock_bh(&mvmsta->lock);
1854 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1855 struct iwl_mvm_tid_data *tid_data;
1856
1857 tid_data = &mvmsta->tid_data[tid];
1858 if (tid_data->state != IWL_AGG_ON &&
1859 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
1860 continue;
1861 if (iwl_mvm_tid_queued(tid_data) == 0)
1862 continue;
1863 ieee80211_sta_set_buffered(sta, tid, true);
1864 }
1865 spin_unlock_bh(&mvmsta->lock);
8ca151b5
JB		 1866 /*
1867 * The fw updates the STA to be asleep. Tx packets on the Tx
1868 * queues to this station will not be transmitted. The fw will
1869 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1870 */
1871 break;
1872 case STA_NOTIFY_AWAKE:
881acd89 1873 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
8ca151b5 1874 break;
9cc40712 1875 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 1876 break;
1877 default:
1878 break;
1879 }
1880}
1881
1ddbbb0c
JB		 1882static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1883 struct ieee80211_vif *vif,
1884 struct ieee80211_sta *sta)
1885{
1886 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1887 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1888
1889 /*
1890 * This is called before mac80211 does RCU synchronisation,
1891 * so here we already invalidate our internal RCU-protected
1892 * station pointer. The rest of the code will thus no longer
1893 * be able to find the station this way, and we don't rely
1894 * on further RCU synchronisation after the sta_state()
1895 * callback deleted the station.
1896 */
1897 mutex_lock(&mvm->mutex);
1898 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1899 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1900 ERR_PTR(-ENOENT));
1901 mutex_unlock(&mvm->mutex);
1902}
1903
fa3d07e4 1904int iwl_mvm_tdls_sta_count(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
cf7b491d
AN		 1905{
1906 struct ieee80211_sta *sta;
fa3d07e4 1907 struct iwl_mvm_sta *mvmsta;
cf7b491d
AN		 1908 int count = 0;
1909 int i;
1910
1911 lockdep_assert_held(&mvm->mutex);
1912
1913 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1914 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1915 lockdep_is_held(&mvm->mutex));
1916 if (!sta || IS_ERR(sta) || !sta->tdls)
1917 continue;
1918
fa3d07e4
AN		 1919 if (vif) {
1920 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1921 if (mvmsta->vif != vif)
1922 continue;
1923 }
1924
cf7b491d
AN		 1925 count++;
1926 }
1927
1928 return count;
1929}
1930
fa3d07e4
AN		 1931static void iwl_mvm_recalc_tdls_state(struct iwl_mvm *mvm,
1932 struct ieee80211_vif *vif,
1933 bool sta_added)
1934{
1935 int tdls_sta_cnt = iwl_mvm_tdls_sta_count(mvm, vif);
1936
1937 /*
1938 * Disable ps when the first TDLS sta is added and re-enable it
1939 * when the last TDLS sta is removed
1940 */
1941 if ((tdls_sta_cnt == 1 && sta_added) ||
1942 (tdls_sta_cnt == 0 && !sta_added))
1943 iwl_mvm_power_update_mac(mvm);
1944}
1945
f59e0e3c
AN		 1946static void iwl_mvm_teardown_tdls_peers(struct iwl_mvm *mvm)
1947{
1948 struct ieee80211_sta *sta;
1949 struct iwl_mvm_sta *mvmsta;
1950 int i;
1951
1952 lockdep_assert_held(&mvm->mutex);
1953
1954 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1955 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1956 lockdep_is_held(&mvm->mutex));
1957 if (!sta || IS_ERR(sta) || !sta->tdls)
1958 continue;
1959
1960 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1961 ieee80211_tdls_oper_request(mvmsta->vif, sta->addr,
1962 NL80211_TDLS_TEARDOWN,
1963 WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED,
1964 GFP_KERNEL);
1965 }
1966}
1967
8ca151b5
JB		 1968static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1969 struct ieee80211_vif *vif,
1970 struct ieee80211_sta *sta,
1971 enum ieee80211_sta_state old_state,
1972 enum ieee80211_sta_state new_state)
1973{
1974 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1975 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1976 int ret;
1977
1978 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1979 sta->addr, old_state, new_state);
1980
1981 /* this would be a mac80211 bug ... but don't crash */
1982 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1983 return -EINVAL;
1984
1985 /* if a STA is being removed, reuse its ID */
1986 flush_work(&mvm->sta_drained_wk);
1987
1988 mutex_lock(&mvm->mutex);
1989 if (old_state == IEEE80211_STA_NOTEXIST &&
1990 new_state == IEEE80211_STA_NONE) {
48bc1307
JB		 1991 /*
1992 * Firmware bug - it'll crash if the beacon interval is less
1993 * than 16. We can't avoid connecting at all, so refuse the
1994 * station state change, this will cause mac80211 to abandon
1995 * attempts to connect to this AP, and eventually wpa_s will
1996 * blacklist the AP...
1997 */
1998 if (vif->type == NL80211_IFTYPE_STATION &&
1999 vif->bss_conf.beacon_int < 16) {
2000 IWL_ERR(mvm,
2001 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2002 sta->addr, vif->bss_conf.beacon_int);
2003 ret = -EINVAL;
2004 goto out_unlock;
2005 }
cf7b491d
AN		 2006
2007 if (sta->tdls &&
2008 (vif->p2p ||
fa3d07e4
AN		 2009 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2010 IWL_MVM_TDLS_STA_COUNT ||
cf7b491d
AN		 2011 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2012 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2013 ret = -EBUSY;
2014 goto out_unlock;
2015 }
2016
8ca151b5 2017 ret = iwl_mvm_add_sta(mvm, vif, sta);
fa3d07e4
AN		 2018 if (sta->tdls && ret == 0)
2019 iwl_mvm_recalc_tdls_state(mvm, vif, true);
8ca151b5
JB		 2020 } else if (old_state == IEEE80211_STA_NONE &&
2021 new_state == IEEE80211_STA_AUTH) {
e820c2da
HD		 2022 /*
2023 * EBS may be disabled due to previous failures reported by FW.
2024 * Reset EBS status here assuming environment has been changed.
2025 */
2026 mvm->last_ebs_successful = true;
8ca151b5
JB		 2027 ret = 0;
2028 } else if (old_state == IEEE80211_STA_AUTH &&
2029 new_state == IEEE80211_STA_ASSOC) {
7a453973
JB		 2030 ret = iwl_mvm_update_sta(mvm, vif, sta);
2031 if (ret == 0)
2032 iwl_mvm_rs_rate_init(mvm, sta,
b87c2179
ES		 2033 mvmvif->phy_ctxt->channel->band,
2034 true);
8ca151b5
JB		 2035 } else if (old_state == IEEE80211_STA_ASSOC &&
2036 new_state == IEEE80211_STA_AUTHORIZED) {
f59e0e3c
AN		 2037
2038 /* we don't support TDLS during DCM */
2039 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2040 iwl_mvm_teardown_tdls_peers(mvm);
2041
7df15b1e 2042 /* enable beacon filtering */
fa7b2e7f 2043 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2044 ret = 0;
2045 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2046 new_state == IEEE80211_STA_ASSOC) {
7df15b1e 2047 /* disable beacon filtering */
a1022927 2048 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 2049 ret = 0;
2050 } else if (old_state == IEEE80211_STA_ASSOC &&
2051 new_state == IEEE80211_STA_AUTH) {
2052 ret = 0;
2053 } else if (old_state == IEEE80211_STA_AUTH &&
2054 new_state == IEEE80211_STA_NONE) {
2055 ret = 0;
2056 } else if (old_state == IEEE80211_STA_NONE &&
2057 new_state == IEEE80211_STA_NOTEXIST) {
2058 ret = iwl_mvm_rm_sta(mvm, vif, sta);
fa3d07e4
AN		 2059 if (sta->tdls)
2060 iwl_mvm_recalc_tdls_state(mvm, vif, false);
8ca151b5
JB		 2061 } else {
2062 ret = -EIO;
2063 }
48bc1307 2064 out_unlock:
8ca151b5
JB		 2065 mutex_unlock(&mvm->mutex);
2066
2067 return ret;
2068}
2069
2070static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2071{
2072 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2073
2074 mvm->rts_threshold = value;
2075
2076 return 0;
2077}
2078
1f3b0ff8
LE		 2079static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2080 struct ieee80211_vif *vif,
2081 struct ieee80211_sta *sta, u32 changed)
2082{
2083 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2084
2085 if (vif->type == NL80211_IFTYPE_STATION &&
2086 changed & IEEE80211_RC_NSS_CHANGED)
2087 iwl_mvm_sf_update(mvm, vif, false);
2088}
2089
8ca151b5
JB		 2090static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2091 struct ieee80211_vif *vif, u16 ac,
2092 const struct ieee80211_tx_queue_params *params)
2093{
2094 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2095 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2096
2097 mvmvif->queue_params[ac] = *params;
2098
2099 /*
2100 * No need to update right away, we'll get BSS_CHANGED_QOS
2101 * The exception is P2P_DEVICE interface which needs immediate update.
2102 */
2103 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2104 int ret;
2105
2106 mutex_lock(&mvm->mutex);
bca49d9a 2107 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false);
8ca151b5
JB		 2108 mutex_unlock(&mvm->mutex);
2109 return ret;
2110 }
2111 return 0;
2112}
2113
2114static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2115 struct ieee80211_vif *vif)
2116{
2117 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2118 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2119 200 + vif->bss_conf.beacon_int);
2120 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2121 100 + vif->bss_conf.beacon_int);
2122
2123 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2124 return;
2125
576eeee9
EP		 2126 /*
2127 * iwl_mvm_protect_session() reads directly from the device
2128 * (the system time), so make sure it is available.
2129 */
2130 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2131 return;
2132
8ca151b5
JB		 2133 mutex_lock(&mvm->mutex);
2134 /* Try really hard to protect the session and hear a beacon */
016d27e1 2135 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
8ca151b5 2136 mutex_unlock(&mvm->mutex);
576eeee9
EP		 2137
2138 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
8ca151b5
JB		 2139}
2140
07ecd897
AN		 2141static void iwl_mvm_mac_mgd_protect_tdls_discover(struct ieee80211_hw *hw,
2142 struct ieee80211_vif *vif)
2143{
2144 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2145 u32 duration = 2 * vif->bss_conf.dtim_period * vif->bss_conf.beacon_int;
2146
576eeee9
EP		 2147 /*
2148 * iwl_mvm_protect_session() reads directly from the device
2149 * (the system time), so make sure it is available.
2150 */
2151 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_TDLS))
2152 return;
2153
07ecd897
AN		 2154 mutex_lock(&mvm->mutex);
2155 /* Protect the session to hear the TDLS setup response on the channel */
2156 iwl_mvm_protect_session(mvm, vif, duration, duration, 100);
2157 mutex_unlock(&mvm->mutex);
576eeee9
EP		 2158
2159 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_TDLS);
07ecd897
AN		 2160}
2161
35a000b7
DS		 2162static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2163 struct ieee80211_vif *vif,
2164 struct cfg80211_sched_scan_request *req,
633e2713 2165 struct ieee80211_scan_ies *ies)
35a000b7
DS		 2166{
2167 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2168 int ret;
2169
4660dfbb
EP		 2170 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2171 if (ret)
2172 return ret;
2173
35a000b7
DS		 2174 mutex_lock(&mvm->mutex);
2175
b538b8ce 2176 if (!iwl_mvm_is_idle(mvm)) {
bd5e4744
DS		 2177 ret = -EBUSY;
2178 goto out;
2179 }
2180
4660dfbb 2181 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
35a000b7
DS		 2182 ret = -EBUSY;
2183 goto out;
2184 }
2185
2186 mvm->scan_status = IWL_MVM_SCAN_SCHED;
2187
fb98be5e
DS		 2188 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
2189 ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
2190 if (ret)
2191 goto err;
2192 }
35a000b7
DS		 2193
2194 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2195 if (ret)
2196 goto err;
2197
fb98be5e
DS		 2198 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
2199 ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies);
2200 else
2201 ret = iwl_mvm_sched_scan_start(mvm, req);
2202
35a000b7
DS		 2203 if (!ret)
2204 goto out;
2205err:
2206 mvm->scan_status = IWL_MVM_SCAN_NONE;
2207out:
2208 mutex_unlock(&mvm->mutex);
2209 return ret;
2210}
2211
37e3308c
JB		 2212static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2213 struct ieee80211_vif *vif)
35a000b7
DS		 2214{
2215 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
33ea27f6 2216 int ret;
35a000b7
DS		 2217
2218 mutex_lock(&mvm->mutex);
fb98be5e 2219 ret = iwl_mvm_scan_offload_stop(mvm, false);
35a000b7 2220 mutex_unlock(&mvm->mutex);
33ea27f6 2221 iwl_mvm_wait_for_async_handlers(mvm);
37e3308c 2222
33ea27f6 2223 return ret;
35a000b7
DS		 2224}
2225
8ca151b5
JB		 2226static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2227 enum set_key_cmd cmd,
2228 struct ieee80211_vif *vif,
2229 struct ieee80211_sta *sta,
2230 struct ieee80211_key_conf *key)
2231{
2232 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2233 int ret;
2234
2235 if (iwlwifi_mod_params.sw_crypto) {
2236 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2237 return -EOPNOTSUPP;
2238 }
2239
2240 switch (key->cipher) {
2241 case WLAN_CIPHER_SUITE_TKIP:
2242 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2243 /* fall-through */
2244 case WLAN_CIPHER_SUITE_CCMP:
2245 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2246 break;
2247 case WLAN_CIPHER_SUITE_AES_CMAC:
2248 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2249 break;
2250 case WLAN_CIPHER_SUITE_WEP40:
2251 case WLAN_CIPHER_SUITE_WEP104:
2252 /*
2253 * Support for TX only, at least for now, so accept
2254 * the key and do nothing else. Then mac80211 will
2255 * pass it for TX but we don't have to use it for RX.
2256 */
2257 return 0;
2258 default:
e36e5433
MS		 2259 /* currently FW supports only one optional cipher scheme */
2260 if (hw->n_cipher_schemes &&
2261 hw->cipher_schemes->cipher == key->cipher)
2262 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2263 else
2264 return -EOPNOTSUPP;
8ca151b5
JB		 2265 }
2266
2267 mutex_lock(&mvm->mutex);
2268
2269 switch (cmd) {
2270 case SET_KEY:
5023d966
JB		 2271 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2272 vif->type == NL80211_IFTYPE_AP) && !sta) {
2273 /*
2274 * GTK on AP interface is a TX-only key, return 0;
2275 * on IBSS they're per-station and because we're lazy
2276 * we don't support them for RX, so do the same.
2277 */
6caffd4f
JB		 2278 ret = 0;
2279 key->hw_key_idx = STA_KEY_IDX_INVALID;
2280 break;
2281 }
2282
8ca151b5
JB		 2283 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2284 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2285 if (ret) {
2286 IWL_WARN(mvm, "set key failed\n");
2287 /*
2288 * can't add key for RX, but we don't need it
2289 * in the device for TX so still return 0
2290 */
6caffd4f 2291 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 2292 ret = 0;
2293 }
2294
2295 break;
2296 case DISABLE_KEY:
6caffd4f
JB		 2297 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2298 ret = 0;
2299 break;
2300 }
2301
8ca151b5
JB		 2302 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2303 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2304 break;
2305 default:
2306 ret = -EINVAL;
2307 }
2308
2309 mutex_unlock(&mvm->mutex);
2310 return ret;
2311}
2312
2313static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2314 struct ieee80211_vif *vif,
2315 struct ieee80211_key_conf *keyconf,
2316 struct ieee80211_sta *sta,
2317 u32 iv32, u16 *phase1key)
2318{
2319 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2320
5023d966
JB		 2321 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2322 return;
2323
8ca151b5
JB		 2324 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2325}
2326
2327
b112889c
AM		 2328static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2329 struct iwl_rx_packet *pkt, void *data)
2330{
2331 struct iwl_mvm *mvm =
2332 container_of(notif_wait, struct iwl_mvm, notif_wait);
2333 struct iwl_hs20_roc_res *resp;
2334 int resp_len = iwl_rx_packet_payload_len(pkt);
2335 struct iwl_mvm_time_event_data *te_data = data;
2336
2337 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2338 return true;
2339
2340 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2341 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2342 return true;
2343 }
2344
2345 resp = (void *)pkt->data;
2346
2347 IWL_DEBUG_TE(mvm,
2348 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2349 resp->status, resp->event_unique_id);
2350
2351 te_data->uid = le32_to_cpu(resp->event_unique_id);
2352 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2353 te_data->uid);
2354
2355 spin_lock_bh(&mvm->time_event_lock);
2356 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2357 spin_unlock_bh(&mvm->time_event_lock);
2358
2359 return true;
2360}
2361
2362#define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2363static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2364 struct ieee80211_channel *channel,
2365 struct ieee80211_vif *vif,
2366 int duration)
2367{
2368 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2369 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2370 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2371 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2372 struct iwl_notification_wait wait_time_event;
2373 struct iwl_hs20_roc_req aux_roc_req = {
2374 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2375 .id_and_color =
2376 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2377 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2378 /* Set the channel info data */
2379 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2380 PHY_BAND_24 : PHY_BAND_5,
2381 .channel_info.channel = channel->hw_value,
2382 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2383 /* Set the time and duration */
2384 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2385 .apply_time_max_delay =
2386 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2387 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2388 };
2389
2390 /* Set the node address */
2391 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2392
2393 te_data->vif = vif;
2394 te_data->duration = duration;
2395 te_data->id = HOT_SPOT_CMD;
2396
2397 lockdep_assert_held(&mvm->mutex);
2398
2399 spin_lock_bh(&mvm->time_event_lock);
2400 list_add_tail(&te_data->list, &mvm->time_event_list);
2401 spin_unlock_bh(&mvm->time_event_lock);
2402
2403 /*
2404 * Use a notification wait, which really just processes the
2405 * command response and doesn't wait for anything, in order
2406 * to be able to process the response and get the UID inside
2407 * the RX path. Using CMD_WANT_SKB doesn't work because it
2408 * stores the buffer and then wakes up this thread, by which
2409 * time another notification (that the time event started)
2410 * might already be processed unsuccessfully.
2411 */
2412 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2413 time_event_response,
2414 ARRAY_SIZE(time_event_response),
2415 iwl_mvm_rx_aux_roc, te_data);
2416
2417 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2418 &aux_roc_req);
2419
2420 if (res) {
2421 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2422 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2423 goto out_clear_te;
2424 }
2425
2426 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2427 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2428 /* should never fail */
2429 WARN_ON_ONCE(res);
2430
2431 if (res) {
2432 out_clear_te:
2433 spin_lock_bh(&mvm->time_event_lock);
2434 iwl_mvm_te_clear_data(mvm, te_data);
2435 spin_unlock_bh(&mvm->time_event_lock);
2436 }
2437
2438 return res;
2439}
2440
8ca151b5
JB		 2441static int iwl_mvm_roc(struct ieee80211_hw *hw,
2442 struct ieee80211_vif *vif,
2443 struct ieee80211_channel *channel,
d339d5ca
IP		 2444 int duration,
2445 enum ieee80211_roc_type type)
8ca151b5
JB		 2446{
2447 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 2448 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 2449 struct cfg80211_chan_def chandef;
31d385ae
IP		 2450 struct iwl_mvm_phy_ctxt *phy_ctxt;
2451 int ret, i;
2452
2453 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2454 duration, type);
8ca151b5 2455
b112889c
AM		 2456 switch (vif->type) {
2457 case NL80211_IFTYPE_STATION:
2458 /* Use aux roc framework (HS20) */
2459 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2460 vif, duration);
2461 return ret;
2462 case NL80211_IFTYPE_P2P_DEVICE:
2463 /* handle below */
2464 break;
2465 default:
2466 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
8ca151b5
JB		 2467 return -EINVAL;
2468 }
2469
8ca151b5
JB		 2470 mutex_lock(&mvm->mutex);
2471
31d385ae
IP		 2472 for (i = 0; i < NUM_PHY_CTX; i++) {
2473 phy_ctxt = &mvm->phy_ctxts[i];
2474 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2475 continue;
2476
2477 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2478 /*
2479 * Unbind the P2P_DEVICE from the current PHY context,
2480 * and if the PHY context is not used remove it.
2481 */
2482 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2483 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2484 goto out_unlock;
2485
2486 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2487
2488 /* Bind the P2P_DEVICE to the current PHY Context */
2489 mvmvif->phy_ctxt = phy_ctxt;
2490
2491 ret = iwl_mvm_binding_add_vif(mvm, vif);
2492 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2493 goto out_unlock;
2494
2495 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2496 goto schedule_time_event;
2497 }
2498 }
2499
2500 /* Need to update the PHY context only if the ROC channel changed */
2501 if (channel == mvmvif->phy_ctxt->channel)
2502 goto schedule_time_event;
2503
8ca151b5 2504 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 2505
31d385ae
IP		 2506 /*
2507 * Change the PHY context configuration as it is currently referenced
2508 * only by the P2P Device MAC
2509 */
2510 if (mvmvif->phy_ctxt->ref == 1) {
2511 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2512 &chandef, 1, 1);
2513 if (ret)
2514 goto out_unlock;
2515 } else {
2516 /*
2517 * The PHY context is shared with other MACs. Need to remove the
2518 * P2P Device from the binding, allocate an new PHY context and
2519 * create a new binding
2520 */
2521 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2522 if (!phy_ctxt) {
2523 ret = -ENOSPC;
2524 goto out_unlock;
2525 }
2526
2527 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2528 1, 1);
2529 if (ret) {
2530 IWL_ERR(mvm, "Failed to change PHY context\n");
2531 goto out_unlock;
2532 }
2533
2534 /* Unbind the P2P_DEVICE from the current PHY context */
2535 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2536 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2537 goto out_unlock;
2538
2539 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2540
2541 /* Bind the P2P_DEVICE to the new allocated PHY context */
2542 mvmvif->phy_ctxt = phy_ctxt;
2543
2544 ret = iwl_mvm_binding_add_vif(mvm, vif);
2545 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2546 goto out_unlock;
2547
2548 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2549 }
2550
2551schedule_time_event:
8ca151b5 2552 /* Schedule the time events */
e635c797 2553 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 2554
31d385ae 2555out_unlock:
8ca151b5
JB		 2556 mutex_unlock(&mvm->mutex);
2557 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 2558 return ret;
2559}
2560
2561static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2562{
2563 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2564
2565 IWL_DEBUG_MAC80211(mvm, "enter\n");
2566
2567 mutex_lock(&mvm->mutex);
2568 iwl_mvm_stop_p2p_roc(mvm);
2569 mutex_unlock(&mvm->mutex);
2570
2571 IWL_DEBUG_MAC80211(mvm, "leave\n");
2572 return 0;
2573}
2574
b08c1d97
LC		 2575static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2576 struct ieee80211_chanctx_conf *ctx)
8ca151b5 2577{
fe0f2de3
IP		 2578 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2579 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 2580 int ret;
2581
b08c1d97
LC		 2582 lockdep_assert_held(&mvm->mutex);
2583
53a9d61e 2584 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 2585
fe0f2de3
IP		 2586 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2587 if (!phy_ctxt) {
2588 ret = -ENOSPC;
2589 goto out;
2590 }
8ca151b5 2591
dcbc3e1a 2592 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
53a9d61e
IP		 2593 ctx->rx_chains_static,
2594 ctx->rx_chains_dynamic);
fe0f2de3
IP		 2595 if (ret) {
2596 IWL_ERR(mvm, "Failed to add PHY context\n");
2597 goto out;
2598 }
2599
53a9d61e 2600 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 2601 *phy_ctxt_id = phy_ctxt->id;
2602out:
b08c1d97
LC		 2603 return ret;
2604}
2605
2606static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2607 struct ieee80211_chanctx_conf *ctx)
2608{
2609 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2610 int ret;
2611
2612 mutex_lock(&mvm->mutex);
2613 ret = __iwl_mvm_add_chanctx(mvm, ctx);
8ca151b5 2614 mutex_unlock(&mvm->mutex);
b08c1d97 2615
8ca151b5
JB		 2616 return ret;
2617}
2618
b08c1d97
LC		 2619static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2620 struct ieee80211_chanctx_conf *ctx)
2621{
2622 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2623 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2624
2625 lockdep_assert_held(&mvm->mutex);
2626
2627 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2628}
2629
8ca151b5
JB		 2630static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2631 struct ieee80211_chanctx_conf *ctx)
2632{
2633 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 2634
2635 mutex_lock(&mvm->mutex);
b08c1d97 2636 __iwl_mvm_remove_chanctx(mvm, ctx);
8ca151b5
JB		 2637 mutex_unlock(&mvm->mutex);
2638}
2639
2640static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2641 struct ieee80211_chanctx_conf *ctx,
2642 u32 changed)
2643{
2644 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 2645 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2646 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 2647
31d385ae
IP		 2648 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2649 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2650 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2dceedae
AN		 2651 IEEE80211_CHANCTX_CHANGE_RADAR |
2652 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
31d385ae
IP		 2653 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2654 phy_ctxt->ref, changed))
2655 return;
2656
8ca151b5 2657 mutex_lock(&mvm->mutex);
4d66449a 2658 iwl_mvm_bt_coex_vif_change(mvm);
dcbc3e1a 2659 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
8ca151b5
JB		 2660 ctx->rx_chains_static,
2661 ctx->rx_chains_dynamic);
2662 mutex_unlock(&mvm->mutex);
2663}
2664
b08c1d97
LC		 2665static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2666 struct ieee80211_vif *vif,
f0c97783
LC		 2667 struct ieee80211_chanctx_conf *ctx,
2668 bool switching_chanctx)
8ca151b5 2669{
fe0f2de3
IP		 2670 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2671 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 2672 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2673 int ret;
2674
b08c1d97 2675 lockdep_assert_held(&mvm->mutex);
8ca151b5 2676
fe0f2de3 2677 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 2678
2679 switch (vif->type) {
2680 case NL80211_IFTYPE_AP:
bd3398e2
AO		 2681 /* Unless it's a CSA flow we have nothing to do here */
2682 if (vif->csa_active) {
2683 mvmvif->ap_ibss_active = true;
2684 break;
2685 }
5023d966 2686 case NL80211_IFTYPE_ADHOC:
8ca151b5
JB		 2687 /*
2688 * The AP binding flow is handled as part of the start_ap flow
5023d966 2689 * (in bss_info_changed), similarly for IBSS.
8ca151b5
JB		 2690 */
2691 ret = 0;
b08c1d97 2692 goto out;
8ca151b5 2693 case NL80211_IFTYPE_STATION:
8ca151b5
JB		 2694 case NL80211_IFTYPE_MONITOR:
2695 break;
2696 default:
2697 ret = -EINVAL;
b08c1d97 2698 goto out;
8ca151b5
JB		 2699 }
2700
2701 ret = iwl_mvm_binding_add_vif(mvm, vif);
2702 if (ret)
b08c1d97 2703 goto out;
8ca151b5
JB		 2704
2705 /*
92d85562
AB		 2706 * Power state must be updated before quotas,
2707 * otherwise fw will complain.
2708 */
999609f1 2709 iwl_mvm_power_update_mac(mvm);
92d85562
AB		 2710
2711 /* Setting the quota at this stage is only required for monitor
8ca151b5
JB		 2712 * interfaces. For the other types, the bss_info changed flow
2713 * will handle quota settings.
2714 */
2715 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 2716 mvmvif->monitor_active = true;
0166230c 2717 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 2718 if (ret)
2719 goto out_remove_binding;
2720 }
2721
bd3398e2 2722 /* Handle binding during CSA */
f0c97783
LC		 2723 if ((vif->type == NL80211_IFTYPE_AP) ||
2724 (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) {
0166230c 2725 iwl_mvm_update_quotas(mvm, NULL);
bca49d9a 2726 iwl_mvm_mac_ctxt_changed(mvm, vif, false);
bd3398e2
AO		 2727 }
2728
b08c1d97 2729 goto out;
8ca151b5 2730
b08c1d97 2731out_remove_binding:
8ca151b5 2732 iwl_mvm_binding_remove_vif(mvm, vif);
999609f1 2733 iwl_mvm_power_update_mac(mvm);
b08c1d97 2734out:
8ca151b5
JB		 2735 if (ret)
2736 mvmvif->phy_ctxt = NULL;
2737 return ret;
2738}
b08c1d97
LC		 2739static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2740 struct ieee80211_vif *vif,
2741 struct ieee80211_chanctx_conf *ctx)
8ca151b5
JB		 2742{
2743 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
b08c1d97 2744 int ret;
8ca151b5
JB		 2745
2746 mutex_lock(&mvm->mutex);
f0c97783 2747 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
b08c1d97
LC		 2748 mutex_unlock(&mvm->mutex);
2749
2750 return ret;
2751}
2752
2753static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2754 struct ieee80211_vif *vif,
f0c97783
LC		 2755 struct ieee80211_chanctx_conf *ctx,
2756 bool switching_chanctx)
b08c1d97
LC		 2757{
2758 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
f0c97783 2759 struct ieee80211_vif *disabled_vif = NULL;
b08c1d97
LC		 2760
2761 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 2762
2763 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2764
8ca151b5 2765 switch (vif->type) {
5023d966 2766 case NL80211_IFTYPE_ADHOC:
b08c1d97 2767 goto out;
8ca151b5 2768 case NL80211_IFTYPE_MONITOR:
1e1391ca 2769 mvmvif->monitor_active = false;
8ca151b5 2770 break;
bd3398e2
AO		 2771 case NL80211_IFTYPE_AP:
2772 /* This part is triggered only during CSA */
2773 if (!vif->csa_active || !mvmvif->ap_ibss_active)
b08c1d97 2774 goto out;
bd3398e2 2775
003e5236
AO		 2776 /* Set CS bit on all the stations */
2777 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2778
2779 /* Save blocked iface, the timeout is set on the next beacon */
2780 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2781
bd3398e2 2782 mvmvif->ap_ibss_active = false;
f0c97783
LC		 2783 break;
2784 case NL80211_IFTYPE_STATION:
2785 if (!switching_chanctx)
2786 break;
2787
2788 disabled_vif = vif;
2789
2790 iwl_mvm_mac_ctxt_changed(mvm, vif, true);
2791 break;
8ca151b5
JB		 2792 default:
2793 break;
2794 }
2795
f0c97783 2796 iwl_mvm_update_quotas(mvm, disabled_vif);
1e1391ca 2797 iwl_mvm_binding_remove_vif(mvm, vif);
1c2abf72 2798
b08c1d97 2799out:
a11e144e 2800 mvmvif->phy_ctxt = NULL;
999609f1 2801 iwl_mvm_power_update_mac(mvm);
b08c1d97
LC		 2802}
2803
2804static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2805 struct ieee80211_vif *vif,
2806 struct ieee80211_chanctx_conf *ctx)
2807{
2808 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2809
2810 mutex_lock(&mvm->mutex);
f0c97783 2811 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
8ca151b5
JB		 2812 mutex_unlock(&mvm->mutex);
2813}
2814
b08c1d97
LC		 2815static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
2816 struct ieee80211_vif_chanctx_switch *vifs,
2817 int n_vifs,
2818 enum ieee80211_chanctx_switch_mode mode)
2819{
2820 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2821 int ret;
2822
2823 /* we only support SWAP_CONTEXTS and with a single-vif right now */
2824 if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1)
2825 return -EOPNOTSUPP;
2826
2827 mutex_lock(&mvm->mutex);
f0c97783 2828 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
b08c1d97
LC		 2829 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2830
2831 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2832 if (ret) {
2833 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2834 goto out_reassign;
2835 }
2836
f0c97783
LC		 2837 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2838 true);
b08c1d97
LC		 2839 if (ret) {
2840 IWL_ERR(mvm,
2841 "failed to assign new_ctx during channel switch\n");
2842 goto out_remove;
2843 }
2844
2845 goto out;
2846
2847out_remove:
2848 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
2849
2850out_reassign:
2851 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx);
2852 if (ret) {
2853 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
2854 goto out_restart;
2855 }
2856
f0c97783
LC		 2857 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
2858 true);
b08c1d97
LC		 2859 if (ret) {
2860 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
2861 goto out_restart;
2862 }
2863
2864 goto out;
2865
2866out_restart:
2867 /* things keep failing, better restart the hw */
2868 iwl_mvm_nic_restart(mvm, false);
2869
2870out:
2871 mutex_unlock(&mvm->mutex);
2872 return ret;
2873}
2874
8ca151b5
JB		 2875static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2876 struct ieee80211_sta *sta,
2877 bool set)
2878{
2879 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2880 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2881
2882 if (!mvm_sta || !mvm_sta->vif) {
2883 IWL_ERR(mvm, "Station is not associated to a vif\n");
2884 return -EINVAL;
2885 }
2886
2887 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2888}
2889
507cadf2
DS		 2890#ifdef CONFIG_NL80211_TESTMODE
2891static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2892 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2893 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
f6c6ad42 2894 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
507cadf2
DS		 2895};
2896
2897static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
2898 struct ieee80211_vif *vif,
2899 void *data, int len)
2900{
2901 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
2902 int err;
2903 u32 noa_duration;
2904
2905 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
2906 if (err)
2907 return err;
2908
2909 if (!tb[IWL_MVM_TM_ATTR_CMD])
2910 return -EINVAL;
2911
2912 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
2913 case IWL_MVM_TM_CMD_SET_NOA:
2914 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
2915 !vif->bss_conf.enable_beacon ||
2916 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
2917 return -EINVAL;
2918
2919 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
2920 if (noa_duration >= vif->bss_conf.beacon_int)
2921 return -EINVAL;
2922
2923 mvm->noa_duration = noa_duration;
2924 mvm->noa_vif = vif;
2925
0166230c 2926 return iwl_mvm_update_quotas(mvm, NULL);
f6c6ad42
JB		 2927 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
2928 /* must be associated client vif - ignore authorized */
2929 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
2930 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
2931 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
2932 return -EINVAL;
2933
2934 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
a1022927
EG		 2935 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2936 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
507cadf2
DS		 2937 }
2938
2939 return -EOPNOTSUPP;
2940}
2941
2942static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
2943 struct ieee80211_vif *vif,
2944 void *data, int len)
2945{
2946 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2947 int err;
2948
2949 mutex_lock(&mvm->mutex);
2950 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
2951 mutex_unlock(&mvm->mutex);
2952
2953 return err;
2954}
2955#endif
2956
bd3398e2
AO		 2957static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
2958 struct ieee80211_vif *vif,
2959 struct cfg80211_chan_def *chandef)
2960{
2961 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
664322fa 2962 struct ieee80211_vif *csa_vif;
bd3398e2
AO		 2963
2964 mutex_lock(&mvm->mutex);
664322fa
AO		 2965
2966 csa_vif = rcu_dereference_protected(mvm->csa_vif,
2967 lockdep_is_held(&mvm->mutex));
2968 if (WARN(csa_vif && csa_vif->csa_active,
bd3398e2
AO		 2969 "Another CSA is already in progress"))
2970 goto out_unlock;
2971
2972 IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
2973 chandef->center_freq1);
664322fa 2974 rcu_assign_pointer(mvm->csa_vif, vif);
bd3398e2
AO		 2975
2976out_unlock:
2977 mutex_unlock(&mvm->mutex);
2978}
2979
c5b0e7c0
EG		 2980static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
2981 struct ieee80211_vif *vif, u32 queues, bool drop)
2982{
2983 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2984 struct iwl_mvm_vif *mvmvif;
2985 struct iwl_mvm_sta *mvmsta;
2986
2987 if (!vif || vif->type != NL80211_IFTYPE_STATION)
2988 return;
2989
2990 mutex_lock(&mvm->mutex);
2991 mvmvif = iwl_mvm_vif_from_mac80211(vif);
2992 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
2993
2994 if (WARN_ON_ONCE(!mvmsta))
2995 goto done;
2996
2997 if (drop) {
2998 if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
2999 IWL_ERR(mvm, "flush request fail\n");
3000 } else {
3001 iwl_trans_wait_tx_queue_empty(mvm->trans,
3002 mvmsta->tfd_queue_msk);
3003 }
3004done:
3005 mutex_unlock(&mvm->mutex);
3006}
3007
e5209263 3008const struct ieee80211_ops iwl_mvm_hw_ops = {
8ca151b5
JB		 3009 .tx = iwl_mvm_mac_tx,
3010 .ampdu_action = iwl_mvm_mac_ampdu_action,
3011 .start = iwl_mvm_mac_start,
3012 .restart_complete = iwl_mvm_mac_restart_complete,
3013 .stop = iwl_mvm_mac_stop,
3014 .add_interface = iwl_mvm_mac_add_interface,
3015 .remove_interface = iwl_mvm_mac_remove_interface,
3016 .config = iwl_mvm_mac_config,
e59647ea 3017 .prepare_multicast = iwl_mvm_prepare_multicast,
8ca151b5
JB		 3018 .configure_filter = iwl_mvm_configure_filter,
3019 .bss_info_changed = iwl_mvm_bss_info_changed,
3020 .hw_scan = iwl_mvm_mac_hw_scan,
3021 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1ddbbb0c 3022 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
8ca151b5
JB		 3023 .sta_state = iwl_mvm_mac_sta_state,
3024 .sta_notify = iwl_mvm_mac_sta_notify,
3025 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3e56eadf 3026 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
8ca151b5 3027 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1f3b0ff8 3028 .sta_rc_update = iwl_mvm_sta_rc_update,
8ca151b5
JB		 3029 .conf_tx = iwl_mvm_mac_conf_tx,
3030 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
07ecd897 3031 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
c5b0e7c0 3032 .flush = iwl_mvm_mac_flush,
35a000b7
DS		 3033 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3034 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
8ca151b5
JB		 3035 .set_key = iwl_mvm_mac_set_key,
3036 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3037 .remain_on_channel = iwl_mvm_roc,
3038 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
8ca151b5
JB		 3039 .add_chanctx = iwl_mvm_add_chanctx,
3040 .remove_chanctx = iwl_mvm_remove_chanctx,
3041 .change_chanctx = iwl_mvm_change_chanctx,
3042 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3043 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
b08c1d97 3044 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
8ca151b5 3045
5023d966
JB		 3046 .start_ap = iwl_mvm_start_ap_ibss,
3047 .stop_ap = iwl_mvm_stop_ap_ibss,
3048 .join_ibss = iwl_mvm_start_ap_ibss,
3049 .leave_ibss = iwl_mvm_stop_ap_ibss,
8ca151b5
JB		 3050
3051 .set_tim = iwl_mvm_set_tim,
3052
bd3398e2
AO		 3053 .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
3054
507cadf2
DS		 3055 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3056
8ca151b5
JB		 3057#ifdef CONFIG_PM_SLEEP
3058 /* look at d3.c */
3059 .suspend = iwl_mvm_suspend,
3060 .resume = iwl_mvm_resume,
3061 .set_wakeup = iwl_mvm_set_wakeup,
3062 .set_rekey_data = iwl_mvm_set_rekey_data,
3063#if IS_ENABLED(CONFIG_IPV6)
3064 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3065#endif
3066 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3067#endif
3068};
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