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iwlwifi: mvm: notify sched scan complete from stop routine
[linux-block.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"
8ca151b5
JB		 83
84static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
85 {
86 .max = 1,
8eb38710 87 .types = BIT(NL80211_IFTYPE_STATION),
8ca151b5 88 },
3c15a0fb
JB		 89 {
90 .max = 1,
8eb38710
IP		 91 .types = BIT(NL80211_IFTYPE_AP) |
92 BIT(NL80211_IFTYPE_P2P_CLIENT) |
3c15a0fb
JB		 93 BIT(NL80211_IFTYPE_P2P_GO),
94 },
95 {
96 .max = 1,
97 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
98 },
8ca151b5
JB		 99};
100
101static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
102 {
103 .num_different_channels = 1,
104 .max_interfaces = 3,
105 .limits = iwl_mvm_limits,
106 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
107 },
108};
109
f0c2646a
JB		 110#ifdef CONFIG_PM_SLEEP
111static const struct nl80211_wowlan_tcp_data_token_feature
112iwl_mvm_wowlan_tcp_token_feature = {
113 .min_len = 0,
114 .max_len = 255,
115 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
116};
117
118static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
119 .tok = &iwl_mvm_wowlan_tcp_token_feature,
120 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
121 sizeof(struct ethhdr) -
122 sizeof(struct iphdr) -
123 sizeof(struct tcphdr),
124 .data_interval_max = 65535, /* __le16 in API */
125 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
126 sizeof(struct ethhdr) -
127 sizeof(struct iphdr) -
128 sizeof(struct tcphdr),
129 .seq = true,
130};
131#endif
132
77736923 133#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
2ee8f021
EP		 134/*
135 * Use the reserved field to indicate magic values.
136 * these values will only be used internally by the driver,
137 * and won't make it to the fw (reserved will be 0).
138 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
139 * be the vif's ip address. in case there is not a single
140 * ip address (0, or more than 1), this attribute will
141 * be skipped.
142 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
143 * the LSB bytes of the vif's mac address
144 */
145enum {
146 BC_FILTER_MAGIC_NONE = 0,
147 BC_FILTER_MAGIC_IP,
148 BC_FILTER_MAGIC_MAC,
149};
150
77736923
EP		 151static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
152 {
153 /* arp */
154 .discard = 0,
155 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
156 .attrs = {
157 {
158 /* frame type - arp, hw type - ethernet */
159 .offset_type =
160 BCAST_FILTER_OFFSET_PAYLOAD_START,
161 .offset = sizeof(rfc1042_header),
162 .val = cpu_to_be32(0x08060001),
163 .mask = cpu_to_be32(0xffffffff),
164 },
2ee8f021
EP		 165 {
166 /* arp dest ip */
167 .offset_type =
168 BCAST_FILTER_OFFSET_PAYLOAD_START,
169 .offset = sizeof(rfc1042_header) + 2 +
170 sizeof(struct arphdr) +
171 ETH_ALEN + sizeof(__be32) +
172 ETH_ALEN,
173 .mask = cpu_to_be32(0xffffffff),
174 /* mark it as special field */
175 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
176 },
177 },
178 },
179 {
180 /* dhcp offer bcast */
181 .discard = 0,
182 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
183 .attrs = {
184 {
185 /* udp dest port - 68 (bootp client)*/
186 .offset_type = BCAST_FILTER_OFFSET_IP_END,
187 .offset = offsetof(struct udphdr, dest),
188 .val = cpu_to_be32(0x00440000),
189 .mask = cpu_to_be32(0xffff0000),
190 },
191 {
192 /* dhcp - lsb bytes of client hw address */
193 .offset_type = BCAST_FILTER_OFFSET_IP_END,
194 .offset = 38,
195 .mask = cpu_to_be32(0xffffffff),
196 /* mark it as special field */
197 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
198 },
77736923
EP		 199 },
200 },
201 /* last filter must be empty */
202 {},
203};
204#endif
205
7498cf4c
EP		 206void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
207{
7bb426ea 208 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 209 return;
210
211 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
212 WARN_ON(test_and_set_bit(ref_type, mvm->ref_bitmap));
213 iwl_trans_ref(mvm->trans);
214}
215
216void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
217{
7bb426ea 218 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 219 return;
220
221 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
222 WARN_ON(!test_and_clear_bit(ref_type, mvm->ref_bitmap));
223 iwl_trans_unref(mvm->trans);
224}
225
226static void
227iwl_mvm_unref_all_except(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref)
228{
229 int i;
230
7bb426ea 231 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 232 return;
233
234 for_each_set_bit(i, mvm->ref_bitmap, IWL_MVM_REF_COUNT) {
235 if (ref == i)
236 continue;
237
238 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d\n", i);
239 clear_bit(i, mvm->ref_bitmap);
240 iwl_trans_unref(mvm->trans);
241 }
242}
243
fe0f2de3
IP		 244static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
245{
246 int i;
247
248 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
249 for (i = 0; i < NUM_PHY_CTX; i++) {
250 mvm->phy_ctxts[i].id = i;
251 mvm->phy_ctxts[i].ref = 0;
252 }
253}
254
20f1a5de
DS		 255static int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
256{
257 /* we create the 802.11 header and SSID element */
258 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID)
259 return mvm->fw->ucode_capa.max_probe_length - 24 - 2;
260 return mvm->fw->ucode_capa.max_probe_length - 24 - 34;
261}
262
8ca151b5
JB		 263int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
264{
265 struct ieee80211_hw *hw = mvm->hw;
831e85f3 266 int num_mac, ret, i;
8ca151b5
JB		 267
268 /* Tell mac80211 our characteristics */
269 hw->flags = IEEE80211_HW_SIGNAL_DBM |
270 IEEE80211_HW_SPECTRUM_MGMT |
271 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
272 IEEE80211_HW_QUEUE_CONTROL |
273 IEEE80211_HW_WANT_MONITOR_VIF |
8ca151b5
JB		 274 IEEE80211_HW_SUPPORTS_PS |
275 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
d2931bbd 276 IEEE80211_HW_AMPDU_AGGREGATION |
d64048ed 277 IEEE80211_HW_TIMING_BEACON_ONLY |
147fc9be 278 IEEE80211_HW_CONNECTION_MONITOR |
dc9a1929 279 IEEE80211_HW_SUPPORTS_UAPSD |
147fc9be 280 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
e8e626ad 281 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
8ca151b5 282
19e737c9 283 hw->queues = mvm->first_agg_queue;
398e8c6c 284 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
7b1dd048
EG		 285 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
286 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
287 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
8ca151b5 288 hw->rate_control_algorithm = "iwl-mvm-rs";
dc9a1929
EG		 289 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
290 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
8ca151b5
JB		 291
292 /*
293 * Enable 11w if advertised by firmware and software crypto
294 * is not enabled (as the firmware will interpret some mgmt
295 * packets, so enabling it with software crypto isn't safe)
296 */
297 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
298 !iwlwifi_mod_params.sw_crypto)
299 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
300
dc9a1929
EG		 301 /* Disable uAPSD due to firmware issues */
302 if (true)
303 hw->flags &= ~IEEE80211_HW_SUPPORTS_UAPSD;
e8e626ad 304
8ca151b5
JB		 305 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
306 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
fe0f2de3 307 hw->chanctx_data_size = sizeof(u16);
8ca151b5
JB		 308
309 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3c15a0fb
JB		 310 BIT(NL80211_IFTYPE_P2P_CLIENT) |
311 BIT(NL80211_IFTYPE_AP) |
312 BIT(NL80211_IFTYPE_P2P_GO) |
c13b1725
EG		 313 BIT(NL80211_IFTYPE_P2P_DEVICE) |
314 BIT(NL80211_IFTYPE_ADHOC);
5023d966 315
a2f73b6c
LR		 316 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
317 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
318 REGULATORY_DISABLE_BEACON_HINTS;
8ca151b5 319
3e56eadf
JB		 320 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
321 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
322
bd3398e2
AO		 323 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW)
324 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
325
8ca151b5
JB		 326 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
327 hw->wiphy->n_iface_combinations =
328 ARRAY_SIZE(iwl_mvm_iface_combinations);
329
c451e6d4 330 hw->wiphy->max_remain_on_channel_duration = 10000;
8ca151b5
JB		 331 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
332
333 /* Extract MAC address */
334 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
335 hw->wiphy->addresses = mvm->addresses;
336 hw->wiphy->n_addresses = 1;
831e85f3
IP		 337
338 /* Extract additional MAC addresses if available */
339 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
340 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
341
342 for (i = 1; i < num_mac; i++) {
343 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
8ca151b5 344 ETH_ALEN);
831e85f3 345 mvm->addresses[i].addr[5]++;
8ca151b5
JB		 346 hw->wiphy->n_addresses++;
347 }
348
fe0f2de3
IP		 349 iwl_mvm_reset_phy_ctxts(mvm);
350
20f1a5de
DS		 351 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
352
8ca151b5
JB		 353 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
354
355 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
356 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
357 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
358 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
359 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
360 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
361
362 hw->wiphy->hw_version = mvm->trans->hw_id;
363
ade50652 364 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
8ca151b5
JB		 365 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
366 else
367 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
368
536a3eee
EG		 369 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
370 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
371 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
372 /* we create the 802.11 header and zero length SSID IE. */
373 hw->wiphy->max_sched_scan_ie_len = SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
35a000b7 374
8ca151b5 375 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
8a110d9b 376 NL80211_FEATURE_P2P_GO_OPPPS;
8ca151b5
JB		 377
378 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
379
e36e5433 380 /* currently FW API supports only one optional cipher scheme */
9ddca860 381 if (mvm->fw->cs[0].cipher) {
e36e5433 382 mvm->hw->n_cipher_schemes = 1;
9ddca860 383 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
e36e5433
MS		 384 }
385
8ca151b5 386#ifdef CONFIG_PM_SLEEP
d15a747f
EP		 387 if (iwl_mvm_is_d0i3_supported(mvm) &&
388 device_can_wakeup(mvm->trans->dev)) {
389 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
390 hw->wiphy->wowlan = &mvm->wowlan;
391 } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
8ca151b5
JB		 392 mvm->trans->ops->d3_suspend &&
393 mvm->trans->ops->d3_resume &&
394 device_can_wakeup(mvm->trans->dev)) {
964dc9e2
JB		 395 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
396 WIPHY_WOWLAN_DISCONNECT |
397 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
398 WIPHY_WOWLAN_RFKILL_RELEASE;
8ca151b5 399 if (!iwlwifi_mod_params.sw_crypto)
964dc9e2
JB		 400 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
401 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
402 WIPHY_WOWLAN_4WAY_HANDSHAKE;
403
404 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
405 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
406 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
407 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
408 hw->wiphy->wowlan = &mvm->wowlan;
8ca151b5
JB		 409 }
410#endif
411
77736923
EP		 412#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
413 /* assign default bcast filtering configuration */
414 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
415#endif
416
8ca151b5
JB		 417 ret = iwl_mvm_leds_init(mvm);
418 if (ret)
419 return ret;
420
b7327d89
EG		 421 ret = ieee80211_register_hw(mvm->hw);
422 if (ret)
423 iwl_mvm_leds_exit(mvm);
424
425 return ret;
8ca151b5
JB		 426}
427
b2492501
AN		 428static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
429 struct ieee80211_sta *sta,
430 struct sk_buff *skb)
431{
432 struct iwl_mvm_sta *mvmsta;
433 bool defer = false;
434
435 /*
436 * double check the IN_D0I3 flag both before and after
437 * taking the spinlock, in order to prevent taking
438 * the spinlock when not needed.
439 */
440 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
441 return false;
442
443 spin_lock(&mvm->d0i3_tx_lock);
444 /*
445 * testing the flag again ensures the skb dequeue
446 * loop (on d0i3 exit) hasn't run yet.
447 */
448 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
449 goto out;
450
451 mvmsta = iwl_mvm_sta_from_mac80211(sta);
452 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
453 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
454 goto out;
455
456 __skb_queue_tail(&mvm->d0i3_tx, skb);
457 ieee80211_stop_queues(mvm->hw);
458
459 /* trigger wakeup */
460 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
461 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
462
463 defer = true;
464out:
465 spin_unlock(&mvm->d0i3_tx_lock);
466 return defer;
467}
468
8ca151b5
JB		 469static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
470 struct ieee80211_tx_control *control,
471 struct sk_buff *skb)
472{
473 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3e56eadf
JB		 474 struct ieee80211_sta *sta = control->sta;
475 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
476 struct ieee80211_hdr *hdr = (void *)skb->data;
8ca151b5 477
9ee718aa
EL		 478 if (iwl_mvm_is_radio_killed(mvm)) {
479 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
8ca151b5
JB		 480 goto drop;
481 }
482
398e8c6c 483 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
8ca151b5
JB		 484 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
485 goto drop;
486
3e56eadf
JB		 487 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
488 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
489 ieee80211_is_mgmt(hdr->frame_control) &&
490 !ieee80211_is_deauth(hdr->frame_control) &&
491 !ieee80211_is_disassoc(hdr->frame_control) &&
492 !ieee80211_is_action(hdr->frame_control)))
493 sta = NULL;
494
495 if (sta) {
b2492501
AN		 496 if (iwl_mvm_defer_tx(mvm, sta, skb))
497 return;
3e56eadf 498 if (iwl_mvm_tx_skb(mvm, skb, sta))
8ca151b5
JB		 499 goto drop;
500 return;
501 }
502
503 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
504 goto drop;
505 return;
506 drop:
507 ieee80211_free_txskb(hw, skb);
508}
509
205e2210
EG		 510static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
511{
512 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
513 return false;
514 return true;
515}
516
517static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
518{
519 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
520 return false;
521 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
522 return true;
523
524 /* enabled by default */
525 return true;
526}
527
8ca151b5
JB		 528static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
529 struct ieee80211_vif *vif,
530 enum ieee80211_ampdu_mlme_action action,
531 struct ieee80211_sta *sta, u16 tid,
532 u16 *ssn, u8 buf_size)
533{
534 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
535 int ret;
b2492501 536 bool tx_agg_ref = false;
8ca151b5
JB		 537
538 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
539 sta->addr, tid, action);
540
541 if (!(mvm->nvm_data->sku_cap_11n_enable))
542 return -EACCES;
543
b2492501 544 /* return from D0i3 before starting a new Tx aggregation */
9256c205
EP		 545 switch (action) {
546 case IEEE80211_AMPDU_TX_START:
547 case IEEE80211_AMPDU_TX_STOP_CONT:
548 case IEEE80211_AMPDU_TX_STOP_FLUSH:
549 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
550 case IEEE80211_AMPDU_TX_OPERATIONAL:
b2492501
AN		 551 iwl_mvm_ref(mvm, IWL_MVM_REF_TX_AGG);
552 tx_agg_ref = true;
553
554 /*
9256c205
EP		 555 * for tx start, wait synchronously until D0i3 exit to
556 * get the correct sequence number for the tid.
557 * additionally, some other ampdu actions use direct
558 * target access, which is not handled automatically
559 * by the trans layer (unlike commands), so wait for
560 * d0i3 exit in these cases as well.
b2492501
AN		 561 */
562 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
563 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), HZ)) {
564 WARN_ON_ONCE(1);
565 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
566 return -EIO;
567 }
9256c205
EP		 568 break;
569 default:
570 break;
b2492501
AN		 571 }
572
8ca151b5
JB		 573 mutex_lock(&mvm->mutex);
574
575 switch (action) {
576 case IEEE80211_AMPDU_RX_START:
205e2210 577 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
8ca151b5
JB		 578 ret = -EINVAL;
579 break;
580 }
581 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
582 break;
583 case IEEE80211_AMPDU_RX_STOP:
584 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
585 break;
586 case IEEE80211_AMPDU_TX_START:
205e2210 587 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
5d158efa
EG		 588 ret = -EINVAL;
589 break;
590 }
8ca151b5
JB		 591 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
592 break;
593 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 594 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
595 break;
8ca151b5
JB		 596 case IEEE80211_AMPDU_TX_STOP_FLUSH:
597 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 598 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 599 break;
600 case IEEE80211_AMPDU_TX_OPERATIONAL:
601 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
602 break;
603 default:
604 WARN_ON_ONCE(1);
605 ret = -EINVAL;
606 break;
607 }
608 mutex_unlock(&mvm->mutex);
609
b2492501
AN		 610 /*
611 * If the tid is marked as started, we won't use it for offloaded
612 * traffic on the next D0i3 entry. It's safe to unref.
613 */
614 if (tx_agg_ref)
615 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
616
8ca151b5
JB		 617 return ret;
618}
619
620static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
621 struct ieee80211_vif *vif)
622{
623 struct iwl_mvm *mvm = data;
624 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
625
626 mvmvif->uploaded = false;
627 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
628
629 /* does this make sense at all? */
630 mvmvif->color++;
631
632 spin_lock_bh(&mvm->time_event_lock);
633 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
634 spin_unlock_bh(&mvm->time_event_lock);
635
fe0f2de3 636 mvmvif->phy_ctxt = NULL;
8ca151b5
JB		 637}
638
639static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
640{
1bd3cbc1
EG		 641#ifdef CONFIG_IWLWIFI_DEBUGFS
642 static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL };
643
644 iwl_mvm_fw_error_dump(mvm);
645
646 /* notify the userspace about the error we had */
647 kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env);
648#endif
649
8ca151b5 650 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 651
652 mvm->scan_status = IWL_MVM_SCAN_NONE;
653
654 /* just in case one was running */
655 ieee80211_remain_on_channel_expired(mvm->hw);
656
657 ieee80211_iterate_active_interfaces_atomic(
658 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
659 iwl_mvm_cleanup_iterator, mvm);
660
fe0f2de3 661 mvm->p2p_device_vif = NULL;
37577fe2 662 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
fe0f2de3
IP		 663
664 iwl_mvm_reset_phy_ctxts(mvm);
8ca151b5
JB		 665 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
666 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
667
668 ieee80211_wake_queues(mvm->hw);
669
7498cf4c
EP		 670 /* cleanup all stale references (scan, roc), but keep the
671 * ucode_down ref until reconfig is complete */
672 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
673
8ca151b5 674 mvm->vif_count = 0;
113a0447 675 mvm->rx_ba_sessions = 0;
8ca151b5
JB		 676}
677
678static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
679{
680 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
681 int ret;
682
683 mutex_lock(&mvm->mutex);
684
685 /* Clean up some internal and mac80211 state on restart */
686 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
687 iwl_mvm_restart_cleanup(mvm);
688
689 ret = iwl_mvm_up(mvm);
690 mutex_unlock(&mvm->mutex);
691
692 return ret;
693}
694
695static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
696{
697 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
698 int ret;
699
700 mutex_lock(&mvm->mutex);
701
702 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
b2492501 703 iwl_mvm_d0i3_enable_tx(mvm, NULL);
8ca151b5
JB		 704 ret = iwl_mvm_update_quotas(mvm, NULL);
705 if (ret)
706 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
707 ret);
708
7498cf4c
EP		 709 /* allow transport/FW low power modes */
710 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
711
8ca151b5
JB		 712 mutex_unlock(&mvm->mutex);
713}
714
715static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
716{
717 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
718
37577fe2 719 flush_work(&mvm->d0i3_exit_work);
8ca151b5
JB		 720 flush_work(&mvm->async_handlers_wk);
721
722 mutex_lock(&mvm->mutex);
7498cf4c
EP		 723
724 /* disallow low power states when the FW is down */
725 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
726
8ca151b5
JB		 727 /* async_handlers_wk is now blocked */
728
729 /*
730 * The work item could be running or queued if the
731 * ROC time event stops just as we get here.
732 */
733 cancel_work_sync(&mvm->roc_done_wk);
734
735 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 736
737 iwl_mvm_async_handlers_purge(mvm);
738 /* async_handlers_list is empty and will stay empty: HW is stopped */
739
740 /* the fw is stopped, the aux sta is dead: clean up driver state */
741 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
742
743 mutex_unlock(&mvm->mutex);
744
745 /*
746 * The worker might have been waiting for the mutex, let it run and
747 * discover that its list is now empty.
748 */
749 cancel_work_sync(&mvm->async_handlers_wk);
750}
751
fe0f2de3
IP		 752static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
753{
754 u16 i;
755
756 lockdep_assert_held(&mvm->mutex);
757
758 for (i = 0; i < NUM_PHY_CTX; i++)
759 if (!mvm->phy_ctxts[i].ref)
760 return &mvm->phy_ctxts[i];
761
762 IWL_ERR(mvm, "No available PHY context\n");
763 return NULL;
764}
765
ee9c6cb0
EG		 766static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
767 s8 tx_power)
768{
769 /* FW is in charge of regulatory enforcement */
770 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
771 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
772 .pwr_restriction = cpu_to_le16(tx_power),
773 };
774
775 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, CMD_SYNC,
776 sizeof(reduce_txpwr_cmd),
777 &reduce_txpwr_cmd);
778}
779
8ca151b5
JB		 780static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
781 struct ieee80211_vif *vif)
782{
783 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
784 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
785 int ret;
786
787 /*
788 * Not much to do here. The stack will not allow interface
789 * types or combinations that we didn't advertise, so we
790 * don't really have to check the types.
791 */
792
793 mutex_lock(&mvm->mutex);
794
e89044d7 795 /* Allocate resources for the MAC context, and add it to the fw */
8ca151b5
JB		 796 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
797 if (ret)
798 goto out_unlock;
799
1c2abf72 800 /* Counting number of interfaces is needed for legacy PM */
ea183d02
IP		 801 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
802 mvm->vif_count++;
ea183d02 803
8ca151b5
JB		 804 /*
805 * The AP binding flow can be done only after the beacon
806 * template is configured (which happens only in the mac80211
807 * start_ap() flow), and adding the broadcast station can happen
808 * only after the binding.
809 * In addition, since modifying the MAC before adding a bcast
810 * station is not allowed by the FW, delay the adding of MAC context to
811 * the point where we can also add the bcast station.
812 * In short: there's not much we can do at this point, other than
813 * allocating resources :)
814 */
5023d966
JB		 815 if (vif->type == NL80211_IFTYPE_AP ||
816 vif->type == NL80211_IFTYPE_ADHOC) {
8ca151b5
JB		 817 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
818 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
b92e661b
EP		 819 qmask,
820 ieee80211_vif_type_p2p(vif));
8ca151b5
JB		 821 if (ret) {
822 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
823 goto out_release;
824 }
825
77740cb4 826 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 827 goto out_unlock;
828 }
829
8ca151b5
JB		 830 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
831 if (ret)
832 goto out_release;
833
e5e7aa8e
EG		 834 ret = iwl_mvm_power_update_mac(mvm, vif);
835 if (ret)
836 goto out_release;
8ca151b5 837
7df15b1e 838 /* beacon filtering */
3dd37d05 839 ret = iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC);
bd3351ba
EP		 840 if (ret)
841 goto out_remove_mac;
842
7df15b1e 843 if (!mvm->bf_allowed_vif &&
73e5f2c5 844 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
7df15b1e 845 mvm->bf_allowed_vif = mvmvif;
a20fd398
AO		 846 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
847 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
7df15b1e
HG		 848 }
849
8ca151b5
JB		 850 /*
851 * P2P_DEVICE interface does not have a channel context assigned to it,
852 * so a dedicated PHY context is allocated to it and the corresponding
853 * MAC context is bound to it at this stage.
854 */
855 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 856
fe0f2de3
IP		 857 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
858 if (!mvmvif->phy_ctxt) {
859 ret = -ENOSPC;
bd3351ba 860 goto out_free_bf;
fe0f2de3 861 }
8ca151b5 862
53a9d61e 863 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 864 ret = iwl_mvm_binding_add_vif(mvm, vif);
865 if (ret)
53a9d61e 866 goto out_unref_phy;
8ca151b5
JB		 867
868 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
869 if (ret)
870 goto out_unbind;
871
872 /* Save a pointer to p2p device vif, so it can later be used to
873 * update the p2p device MAC when a GO is started/stopped */
874 mvm->p2p_device_vif = vif;
875 }
876
63494374 877 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 878 goto out_unlock;
879
880 out_unbind:
881 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 882 out_unref_phy:
fe0f2de3 883 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
bd3351ba
EP		 884 out_free_bf:
885 if (mvm->bf_allowed_vif == mvmvif) {
886 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 887 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
888 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
bd3351ba 889 }
8ca151b5
JB		 890 out_remove_mac:
891 mvmvif->phy_ctxt = NULL;
892 iwl_mvm_mac_ctxt_remove(mvm, vif);
893 out_release:
5ee2b215
AB		 894 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
895 mvm->vif_count--;
1c2abf72 896
8ca151b5
JB		 897 iwl_mvm_mac_ctxt_release(mvm, vif);
898 out_unlock:
899 mutex_unlock(&mvm->mutex);
900
901 return ret;
902}
903
38a12b5b
JB		 904static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
905 struct ieee80211_vif *vif)
8ca151b5 906{
8ca151b5
JB		 907 u32 tfd_msk = 0, ac;
908
909 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
910 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
911 tfd_msk |= BIT(vif->hw_queue[ac]);
912
913 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
914 tfd_msk |= BIT(vif->cab_queue);
915
916 if (tfd_msk) {
917 mutex_lock(&mvm->mutex);
918 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
919 mutex_unlock(&mvm->mutex);
920 }
921
922 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
923 /*
924 * Flush the ROC worker which will flush the OFFCHANNEL queue.
925 * We assume here that all the packets sent to the OFFCHANNEL
926 * queue are sent in ROC session.
927 */
928 flush_work(&mvm->roc_done_wk);
929 } else {
930 /*
931 * By now, all the AC queues are empty. The AGG queues are
932 * empty too. We already got all the Tx responses for all the
933 * packets in the queues. The drain work can have been
0742a75a 934 * triggered. Flush it.
8ca151b5
JB		 935 */
936 flush_work(&mvm->sta_drained_wk);
937 }
38a12b5b
JB		 938}
939
940static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
941 struct ieee80211_vif *vif)
942{
943 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
944 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
945
946 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 947
948 mutex_lock(&mvm->mutex);
949
7df15b1e
HG		 950 if (mvm->bf_allowed_vif == mvmvif) {
951 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 952 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
953 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
7df15b1e
HG		 954 }
955
63494374
JB		 956 iwl_mvm_vif_dbgfs_clean(mvm, vif);
957
8ca151b5
JB		 958 /*
959 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 960 * interface is be handled as part of the stop_ap flow.
8ca151b5 961 */
5023d966
JB		 962 if (vif->type == NL80211_IFTYPE_AP ||
963 vif->type == NL80211_IFTYPE_ADHOC) {
507cadf2
DS		 964#ifdef CONFIG_NL80211_TESTMODE
965 if (vif == mvm->noa_vif) {
966 mvm->noa_vif = NULL;
967 mvm->noa_duration = 0;
968 }
969#endif
8ca151b5
JB		 970 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
971 goto out_release;
972 }
973
974 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
975 mvm->p2p_device_vif = NULL;
976 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
977 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 978 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 979 mvmvif->phy_ctxt = NULL;
980 }
981
5ee2b215 982 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5 983 mvm->vif_count--;
1c2abf72 984
e5e7aa8e 985 iwl_mvm_power_update_mac(mvm, vif);
8ca151b5
JB		 986 iwl_mvm_mac_ctxt_remove(mvm, vif);
987
988out_release:
989 iwl_mvm_mac_ctxt_release(mvm, vif);
990 mutex_unlock(&mvm->mutex);
991}
992
993static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
88f2fd73 994{
8ca151b5
JB		 995 return 0;
996}
997
e59647ea
EP		 998struct iwl_mvm_mc_iter_data {
999 struct iwl_mvm *mvm;
1000 int port_id;
1001};
1002
1003static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1004 struct ieee80211_vif *vif)
1005{
1006 struct iwl_mvm_mc_iter_data *data = _data;
1007 struct iwl_mvm *mvm = data->mvm;
1008 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1009 int ret, len;
1010
1011 /* if we don't have free ports, mcast frames will be dropped */
1012 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1013 return;
1014
1015 if (vif->type != NL80211_IFTYPE_STATION ||
1016 !vif->bss_conf.assoc)
1017 return;
1018
1019 cmd->port_id = data->port_id++;
1020 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1021 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1022
1023 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_SYNC, len, cmd);
1024 if (ret)
1025 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1026}
1027
1028static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1029{
1030 struct iwl_mvm_mc_iter_data iter_data = {
1031 .mvm = mvm,
88f2fd73
MG		 1032 };
1033
e59647ea
EP		 1034 lockdep_assert_held(&mvm->mutex);
1035
1036 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1037 return;
1038
1039 ieee80211_iterate_active_interfaces(
1040 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1041 iwl_mvm_mc_iface_iterator, &iter_data);
88f2fd73
MG		 1042}
1043
e59647ea
EP		 1044static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1045 struct netdev_hw_addr_list *mc_list)
8ca151b5 1046{
e59647ea
EP		 1047 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1048 struct iwl_mcast_filter_cmd *cmd;
1049 struct netdev_hw_addr *addr;
1050 int addr_count = netdev_hw_addr_list_count(mc_list);
1051 bool pass_all = false;
1052 int len;
1053
1054 if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) {
1055 pass_all = true;
1056 addr_count = 0;
1057 }
1058
1059 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1060 cmd = kzalloc(len, GFP_ATOMIC);
1061 if (!cmd)
1062 return 0;
1063
1064 if (pass_all) {
1065 cmd->pass_all = 1;
1066 return (u64)(unsigned long)cmd;
1067 }
1068
1069 netdev_hw_addr_list_for_each(addr, mc_list) {
1070 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1071 cmd->count, addr->addr);
1072 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1073 addr->addr, ETH_ALEN);
1074 cmd->count++;
1075 }
1076
1077 return (u64)(unsigned long)cmd;
8ca151b5
JB		 1078}
1079
1080static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1081 unsigned int changed_flags,
1082 unsigned int *total_flags,
1083 u64 multicast)
1084{
e59647ea
EP		 1085 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1086 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
8ca151b5 1087
e59647ea 1088 mutex_lock(&mvm->mutex);
51b6b9e0 1089
e59647ea
EP		 1090 /* replace previous configuration */
1091 kfree(mvm->mcast_filter_cmd);
1092 mvm->mcast_filter_cmd = cmd;
51b6b9e0 1093
e59647ea
EP		 1094 if (!cmd)
1095 goto out;
51b6b9e0 1096
e59647ea
EP		 1097 iwl_mvm_recalc_multicast(mvm);
1098out:
1099 mutex_unlock(&mvm->mutex);
1100 *total_flags = 0;
51b6b9e0
EG		 1101}
1102
c87163b9
EP		 1103#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1104struct iwl_bcast_iter_data {
1105 struct iwl_mvm *mvm;
1106 struct iwl_bcast_filter_cmd *cmd;
1107 u8 current_filter;
1108};
1109
1110static void
1111iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1112 const struct iwl_fw_bcast_filter *in_filter,
1113 struct iwl_fw_bcast_filter *out_filter)
1114{
1115 struct iwl_fw_bcast_filter_attr *attr;
1116 int i;
1117
1118 memcpy(out_filter, in_filter, sizeof(*out_filter));
1119
1120 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1121 attr = &out_filter->attrs[i];
1122
1123 if (!attr->mask)
1124 break;
1125
2ee8f021
EP		 1126 switch (attr->reserved1) {
1127 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1128 if (vif->bss_conf.arp_addr_cnt != 1) {
1129 attr->mask = 0;
1130 continue;
1131 }
1132
1133 attr->val = vif->bss_conf.arp_addr_list[0];
1134 break;
1135 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1136 attr->val = *(__be32 *)&vif->addr[2];
1137 break;
1138 default:
1139 break;
1140 }
1141 attr->reserved1 = 0;
c87163b9
EP		 1142 out_filter->num_attrs++;
1143 }
1144}
1145
1146static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1147 struct ieee80211_vif *vif)
1148{
1149 struct iwl_bcast_iter_data *data = _data;
1150 struct iwl_mvm *mvm = data->mvm;
1151 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1152 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1153 struct iwl_fw_bcast_mac *bcast_mac;
1154 int i;
1155
1156 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1157 return;
1158
1159 bcast_mac = &cmd->macs[mvmvif->id];
1160
1161 /* enable filtering only for associated stations */
1162 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
1163 return;
1164
1165 bcast_mac->default_discard = 1;
1166
1167 /* copy all configured filters */
1168 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1169 /*
1170 * Make sure we don't exceed our filters limit.
1171 * if there is still a valid filter to be configured,
1172 * be on the safe side and just allow bcast for this mac.
1173 */
1174 if (WARN_ON_ONCE(data->current_filter >=
1175 ARRAY_SIZE(cmd->filters))) {
1176 bcast_mac->default_discard = 0;
1177 bcast_mac->attached_filters = 0;
1178 break;
1179 }
1180
1181 iwl_mvm_set_bcast_filter(vif,
1182 &mvm->bcast_filters[i],
1183 &cmd->filters[data->current_filter]);
1184
1185 /* skip current filter if it contains no attributes */
1186 if (!cmd->filters[data->current_filter].num_attrs)
1187 continue;
1188
1189 /* attach the filter to current mac */
1190 bcast_mac->attached_filters |=
1191 cpu_to_le16(BIT(data->current_filter));
1192
1193 data->current_filter++;
1194 }
1195}
1196
de06a59e
EP		 1197bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1198 struct iwl_bcast_filter_cmd *cmd)
c87163b9 1199{
c87163b9
EP		 1200 struct iwl_bcast_iter_data iter_data = {
1201 .mvm = mvm,
de06a59e 1202 .cmd = cmd,
c87163b9
EP		 1203 };
1204
de06a59e
EP		 1205 memset(cmd, 0, sizeof(*cmd));
1206 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1207 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1208
1209#ifdef CONFIG_IWLWIFI_DEBUGFS
1210 /* use debugfs filters/macs if override is configured */
1211 if (mvm->dbgfs_bcast_filtering.override) {
1212 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1213 sizeof(cmd->filters));
1214 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1215 sizeof(cmd->macs));
1216 return true;
1217 }
1218#endif
c87163b9
EP		 1219
1220 /* if no filters are configured, do nothing */
1221 if (!mvm->bcast_filters)
de06a59e 1222 return false;
c87163b9
EP		 1223
1224 /* configure and attach these filters for each associated sta vif */
1225 ieee80211_iterate_active_interfaces(
1226 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1227 iwl_mvm_bcast_filter_iterator, &iter_data);
1228
de06a59e
EP		 1229 return true;
1230}
1231static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1232 struct ieee80211_vif *vif)
1233{
1234 struct iwl_bcast_filter_cmd cmd;
1235
1236 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1237 return 0;
1238
003e3c4e
EG		 1239 /* bcast filtering isn't supported for P2P client */
1240 if (vif->p2p)
1241 return 0;
1242
de06a59e
EP		 1243 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1244 return 0;
1245
c87163b9
EP		 1246 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, CMD_SYNC,
1247 sizeof(cmd), &cmd);
1248}
1249#else
1250static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1251 struct ieee80211_vif *vif)
1252{
1253 return 0;
1254}
1255#endif
1256
8ca151b5
JB		 1257static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1258 struct ieee80211_vif *vif,
1259 struct ieee80211_bss_conf *bss_conf,
1260 u32 changes)
1261{
1262 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1263 int ret;
1264
6e97b0d2
IP		 1265 /*
1266 * Re-calculate the tsf id, as the master-slave relations depend on the
1267 * beacon interval, which was not known when the station interface was
1268 * added.
1269 */
1270 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1271 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1272
8ca151b5
JB		 1273 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1274 if (ret)
1275 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1276
1277 if (changes & BSS_CHANGED_ASSOC) {
1278 if (bss_conf->assoc) {
1279 /* add quota for this interface */
1280 ret = iwl_mvm_update_quotas(mvm, vif);
1281 if (ret) {
1282 IWL_ERR(mvm, "failed to update quotas\n");
1283 return;
1284 }
016d27e1
JB		 1285
1286 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1287 &mvm->status)) {
1288 /*
1289 * If we're restarting then the firmware will
1290 * obviously have lost synchronisation with
1291 * the AP. It will attempt to synchronise by
1292 * itself, but we can make it more reliable by
1293 * scheduling a session protection time event.
1294 *
1295 * The firmware needs to receive a beacon to
1296 * catch up with synchronisation, use 110% of
1297 * the beacon interval.
1298 *
1299 * Set a large maximum delay to allow for more
1300 * than a single interface.
1301 */
1302 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1303 iwl_mvm_protect_session(mvm, vif, dur, dur,
1304 5 * dur);
1305 }
1f3b0ff8
LE		 1306
1307 iwl_mvm_sf_update(mvm, vif, false);
175a70b7 1308 iwl_mvm_power_vif_assoc(mvm, vif);
29a90a49
EP		 1309 if (vif->p2p)
1310 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
8ca151b5 1311 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1f3b0ff8
LE		 1312 /*
1313 * If update fails - SF might be running in associated
1314 * mode while disassociated - which is forbidden.
1315 */
1316 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1317 "Failed to update SF upon disassociation\n");
1318
8ca151b5
JB		 1319 /* remove AP station now that the MAC is unassoc */
1320 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1321 if (ret)
1322 IWL_ERR(mvm, "failed to remove AP station\n");
37577fe2
EP		 1323
1324 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1325 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
8ca151b5
JB		 1326 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1327 /* remove quota for this interface */
1328 ret = iwl_mvm_update_quotas(mvm, NULL);
1329 if (ret)
1330 IWL_ERR(mvm, "failed to update quotas\n");
29a90a49
EP		 1331
1332 if (vif->p2p)
1333 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
8ca151b5 1334 }
a20fd398 1335
e59647ea 1336 iwl_mvm_recalc_multicast(mvm);
c87163b9 1337 iwl_mvm_configure_bcast_filter(mvm, vif);
e59647ea 1338
a20fd398
AO		 1339 /* reset rssi values */
1340 mvmvif->bf_data.ave_beacon_signal = 0;
1341
8e484f0b 1342 iwl_mvm_bt_coex_vif_change(mvm);
f94045ed
EG		 1343 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1344 IEEE80211_SMPS_AUTOMATIC);
989c6505 1345 } else if (changes & BSS_CHANGED_BEACON_INFO) {
210a544e
JB		 1346 /*
1347 * We received a beacon _after_ association so
1348 * remove the session protection.
1349 */
1350 iwl_mvm_remove_time_event(mvm, mvmvif,
1351 &mvmvif->time_event_data);
0229cdaf 1352 iwl_mvm_sf_update(mvm, vif, false);
c63722cf 1353 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, CMD_SYNC));
51498cf6
AB		 1354 } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
1355 BSS_CHANGED_QOS)) {
e5e7aa8e 1356 ret = iwl_mvm_power_update_mac(mvm, vif);
4bf881f5
AB		 1357 if (ret)
1358 IWL_ERR(mvm, "failed to update power mode\n");
8ca151b5 1359 }
88f2fd73
MG		 1360 if (changes & BSS_CHANGED_TXPOWER) {
1361 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1362 bss_conf->txpower);
1363 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1364 }
a20fd398
AO		 1365
1366 if (changes & BSS_CHANGED_CQM) {
3c6acb61 1367 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
a20fd398
AO		 1368 /* reset cqm events tracking */
1369 mvmvif->bf_data.last_cqm_event = 0;
3dd37d05 1370 ret = iwl_mvm_update_beacon_filter(mvm, vif, false, CMD_SYNC);
a20fd398
AO		 1371 if (ret)
1372 IWL_ERR(mvm, "failed to update CQM thresholds\n");
1373 }
2ee8f021
EP		 1374
1375 if (changes & BSS_CHANGED_ARP_FILTER) {
3c6acb61 1376 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2ee8f021
EP		 1377 iwl_mvm_configure_bcast_filter(mvm, vif);
1378 }
8ca151b5
JB		 1379}
1380
5023d966
JB		 1381static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1382 struct ieee80211_vif *vif)
8ca151b5
JB		 1383{
1384 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1385 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1386 int ret;
1387
1388 mutex_lock(&mvm->mutex);
1389
1390 /* Send the beacon template */
1391 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1392 if (ret)
1393 goto out_unlock;
1394
6e97b0d2
IP		 1395 /*
1396 * Re-calculate the tsf id, as the master-slave relations depend on the
1397 * beacon interval, which was not known when the AP interface was added.
1398 */
1399 if (vif->type == NL80211_IFTYPE_AP)
1400 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1401
8ca151b5
JB		 1402 /* Add the mac context */
1403 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1404 if (ret)
1405 goto out_unlock;
1406
1407 /* Perform the binding */
1408 ret = iwl_mvm_binding_add_vif(mvm, vif);
1409 if (ret)
1410 goto out_remove;
1411
8ca151b5
JB		 1412 /* Send the bcast station. At this stage the TBTT and DTIM time events
1413 * are added and applied to the scheduler */
1414 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1415 if (ret)
1416 goto out_unbind;
1417
5691e218
IP		 1418 /* must be set before quota calculations */
1419 mvmvif->ap_ibss_active = true;
1420
a11e144e 1421 /* power updated needs to be done before quotas */
e5e7aa8e 1422 iwl_mvm_power_update_mac(mvm, vif);
a11e144e 1423
8ca151b5
JB		 1424 ret = iwl_mvm_update_quotas(mvm, vif);
1425 if (ret)
a11e144e 1426 goto out_quota_failed;
8ca151b5 1427
5023d966 1428 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5
JB		 1429 if (vif->p2p && mvm->p2p_device_vif)
1430 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1431
29a90a49
EP		 1432 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1433
8e484f0b 1434 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1435
8ca151b5
JB		 1436 mutex_unlock(&mvm->mutex);
1437 return 0;
1438
a11e144e 1439out_quota_failed:
e5e7aa8e 1440 iwl_mvm_power_update_mac(mvm, vif);
5691e218 1441 mvmvif->ap_ibss_active = false;
8ca151b5
JB		 1442 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1443out_unbind:
1444 iwl_mvm_binding_remove_vif(mvm, vif);
1445out_remove:
1446 iwl_mvm_mac_ctxt_remove(mvm, vif);
1447out_unlock:
1448 mutex_unlock(&mvm->mutex);
1449 return ret;
1450}
1451
5023d966
JB		 1452static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1453 struct ieee80211_vif *vif)
8ca151b5
JB		 1454{
1455 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1456 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1457
38a12b5b
JB		 1458 iwl_mvm_prepare_mac_removal(mvm, vif);
1459
8ca151b5
JB		 1460 mutex_lock(&mvm->mutex);
1461
5023d966 1462 mvmvif->ap_ibss_active = false;
8ca151b5 1463
8e484f0b 1464 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1465
29a90a49
EP		 1466 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1467
5023d966 1468 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5
JB		 1469 if (vif->p2p && mvm->p2p_device_vif)
1470 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1471
1472 iwl_mvm_update_quotas(mvm, NULL);
1473 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1474 iwl_mvm_binding_remove_vif(mvm, vif);
a11e144e 1475
e5e7aa8e 1476 iwl_mvm_power_update_mac(mvm, vif);
a11e144e 1477
8ca151b5
JB		 1478 iwl_mvm_mac_ctxt_remove(mvm, vif);
1479
1480 mutex_unlock(&mvm->mutex);
1481}
1482
5023d966
JB		 1483static void
1484iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1485 struct ieee80211_vif *vif,
1486 struct ieee80211_bss_conf *bss_conf,
1487 u32 changes)
8ca151b5 1488{
be2056fc 1489 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8a5e3660 1490
be2056fc
IP		 1491 /* Changes will be applied when the AP/IBSS is started */
1492 if (!mvmvif->ap_ibss_active)
1493 return;
1494
863230da
JB		 1495 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1496 BSS_CHANGED_BANDWIDTH) &&
1497 iwl_mvm_mac_ctxt_changed(mvm, vif))
1498 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
8a5e3660 1499
8ca151b5 1500 /* Need to send a new beacon template to the FW */
863230da
JB		 1501 if (changes & BSS_CHANGED_BEACON &&
1502 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1503 IWL_WARN(mvm, "Failed updating beacon data\n");
8ca151b5
JB		 1504}
1505
1506static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1507 struct ieee80211_vif *vif,
1508 struct ieee80211_bss_conf *bss_conf,
1509 u32 changes)
1510{
1511 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1512
1513 mutex_lock(&mvm->mutex);
1514
1515 switch (vif->type) {
1516 case NL80211_IFTYPE_STATION:
1517 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1518 break;
1519 case NL80211_IFTYPE_AP:
5023d966
JB		 1520 case NL80211_IFTYPE_ADHOC:
1521 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
8ca151b5
JB		 1522 break;
1523 default:
1524 /* shouldn't happen */
1525 WARN_ON_ONCE(1);
1526 }
1527
1528 mutex_unlock(&mvm->mutex);
1529}
1530
1531static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1532 struct ieee80211_vif *vif,
1533 struct cfg80211_scan_request *req)
1534{
1535 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1536 int ret;
1537
1538 if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
1539 return -EINVAL;
1540
1541 mutex_lock(&mvm->mutex);
1542
a6623e84
JB		 1543 switch (mvm->scan_status) {
1544 case IWL_MVM_SCAN_SCHED:
636a2cdc 1545 ret = iwl_mvm_sched_scan_stop(mvm, true);
a6623e84
JB		 1546 if (ret) {
1547 ret = -EBUSY;
1548 goto out;
1549 }
a6623e84
JB		 1550 break;
1551 case IWL_MVM_SCAN_NONE:
1552 break;
1553 default:
8ca151b5 1554 ret = -EBUSY;
519e2026
AN		 1555 goto out;
1556 }
8ca151b5 1557
519e2026
AN		 1558 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1559
1560 ret = iwl_mvm_scan_request(mvm, vif, req);
1561 if (ret)
1562 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1563out:
8ca151b5 1564 mutex_unlock(&mvm->mutex);
33ea27f6
AN		 1565 /* make sure to flush the Rx handler before the next scan arrives */
1566 iwl_mvm_wait_for_async_handlers(mvm);
8ca151b5
JB		 1567 return ret;
1568}
1569
1570static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1571 struct ieee80211_vif *vif)
1572{
1573 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1574
1575 mutex_lock(&mvm->mutex);
1576
1577 iwl_mvm_cancel_scan(mvm);
1578
1579 mutex_unlock(&mvm->mutex);
1580}
1581
1582static void
1583iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
3e56eadf 1584 struct ieee80211_sta *sta, u16 tids,
8ca151b5
JB		 1585 int num_frames,
1586 enum ieee80211_frame_release_type reason,
1587 bool more_data)
1588{
1589 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5 1590
3e56eadf 1591 /* Called when we need to transmit (a) frame(s) from mac80211 */
8ca151b5 1592
3e56eadf
JB		 1593 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1594 tids, more_data, false);
1595}
1596
1597static void
1598iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1599 struct ieee80211_sta *sta, u16 tids,
1600 int num_frames,
1601 enum ieee80211_frame_release_type reason,
1602 bool more_data)
1603{
1604 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1605
1606 /* Called when we need to transmit (a) frame(s) from agg queue */
1607
1608 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1609 tids, more_data, true);
8ca151b5
JB		 1610}
1611
1612static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1613 struct ieee80211_vif *vif,
1614 enum sta_notify_cmd cmd,
1615 struct ieee80211_sta *sta)
1616{
1617 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5b577a90 1618 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3e56eadf 1619 int tid;
8ca151b5
JB		 1620
1621 switch (cmd) {
1622 case STA_NOTIFY_SLEEP:
e3d4bc8c 1623 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5 1624 ieee80211_sta_block_awake(hw, sta, true);
3e56eadf
JB		 1625 spin_lock_bh(&mvmsta->lock);
1626 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1627 struct iwl_mvm_tid_data *tid_data;
1628
1629 tid_data = &mvmsta->tid_data[tid];
1630 if (tid_data->state != IWL_AGG_ON &&
1631 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
1632 continue;
1633 if (iwl_mvm_tid_queued(tid_data) == 0)
1634 continue;
1635 ieee80211_sta_set_buffered(sta, tid, true);
1636 }
1637 spin_unlock_bh(&mvmsta->lock);
8ca151b5
JB		 1638 /*
1639 * The fw updates the STA to be asleep. Tx packets on the Tx
1640 * queues to this station will not be transmitted. The fw will
1641 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1642 */
1643 break;
1644 case STA_NOTIFY_AWAKE:
881acd89 1645 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
8ca151b5 1646 break;
9cc40712 1647 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 1648 break;
1649 default:
1650 break;
1651 }
1652}
1653
1ddbbb0c
JB		 1654static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1655 struct ieee80211_vif *vif,
1656 struct ieee80211_sta *sta)
1657{
1658 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1659 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1660
1661 /*
1662 * This is called before mac80211 does RCU synchronisation,
1663 * so here we already invalidate our internal RCU-protected
1664 * station pointer. The rest of the code will thus no longer
1665 * be able to find the station this way, and we don't rely
1666 * on further RCU synchronisation after the sta_state()
1667 * callback deleted the station.
1668 */
1669 mutex_lock(&mvm->mutex);
1670 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1671 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1672 ERR_PTR(-ENOENT));
1673 mutex_unlock(&mvm->mutex);
1674}
1675
8ca151b5
JB		 1676static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1677 struct ieee80211_vif *vif,
1678 struct ieee80211_sta *sta,
1679 enum ieee80211_sta_state old_state,
1680 enum ieee80211_sta_state new_state)
1681{
1682 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1683 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1684 int ret;
1685
1686 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1687 sta->addr, old_state, new_state);
1688
1689 /* this would be a mac80211 bug ... but don't crash */
1690 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1691 return -EINVAL;
1692
1693 /* if a STA is being removed, reuse its ID */
1694 flush_work(&mvm->sta_drained_wk);
1695
1696 mutex_lock(&mvm->mutex);
1697 if (old_state == IEEE80211_STA_NOTEXIST &&
1698 new_state == IEEE80211_STA_NONE) {
48bc1307
JB		 1699 /*
1700 * Firmware bug - it'll crash if the beacon interval is less
1701 * than 16. We can't avoid connecting at all, so refuse the
1702 * station state change, this will cause mac80211 to abandon
1703 * attempts to connect to this AP, and eventually wpa_s will
1704 * blacklist the AP...
1705 */
1706 if (vif->type == NL80211_IFTYPE_STATION &&
1707 vif->bss_conf.beacon_int < 16) {
1708 IWL_ERR(mvm,
1709 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
1710 sta->addr, vif->bss_conf.beacon_int);
1711 ret = -EINVAL;
1712 goto out_unlock;
1713 }
8ca151b5
JB		 1714 ret = iwl_mvm_add_sta(mvm, vif, sta);
1715 } else if (old_state == IEEE80211_STA_NONE &&
1716 new_state == IEEE80211_STA_AUTH) {
e820c2da
HD		 1717 /*
1718 * EBS may be disabled due to previous failures reported by FW.
1719 * Reset EBS status here assuming environment has been changed.
1720 */
1721 mvm->last_ebs_successful = true;
8ca151b5
JB		 1722 ret = 0;
1723 } else if (old_state == IEEE80211_STA_AUTH &&
1724 new_state == IEEE80211_STA_ASSOC) {
7a453973
JB		 1725 ret = iwl_mvm_update_sta(mvm, vif, sta);
1726 if (ret == 0)
1727 iwl_mvm_rs_rate_init(mvm, sta,
b87c2179
ES		 1728 mvmvif->phy_ctxt->channel->band,
1729 true);
8ca151b5
JB		 1730 } else if (old_state == IEEE80211_STA_ASSOC &&
1731 new_state == IEEE80211_STA_AUTHORIZED) {
7df15b1e 1732 /* enable beacon filtering */
c63722cf
AB		 1733 if (vif->bss_conf.dtim_period)
1734 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif,
1735 CMD_SYNC));
8ca151b5
JB		 1736 ret = 0;
1737 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1738 new_state == IEEE80211_STA_ASSOC) {
7df15b1e 1739 /* disable beacon filtering */
3dd37d05 1740 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC));
8ca151b5
JB		 1741 ret = 0;
1742 } else if (old_state == IEEE80211_STA_ASSOC &&
1743 new_state == IEEE80211_STA_AUTH) {
1744 ret = 0;
1745 } else if (old_state == IEEE80211_STA_AUTH &&
1746 new_state == IEEE80211_STA_NONE) {
1747 ret = 0;
1748 } else if (old_state == IEEE80211_STA_NONE &&
1749 new_state == IEEE80211_STA_NOTEXIST) {
1750 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1751 } else {
1752 ret = -EIO;
1753 }
48bc1307 1754 out_unlock:
8ca151b5
JB		 1755 mutex_unlock(&mvm->mutex);
1756
1757 return ret;
1758}
1759
1760static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1761{
1762 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1763
1764 mvm->rts_threshold = value;
1765
1766 return 0;
1767}
1768
1f3b0ff8
LE		 1769static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
1770 struct ieee80211_vif *vif,
1771 struct ieee80211_sta *sta, u32 changed)
1772{
1773 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1774
1775 if (vif->type == NL80211_IFTYPE_STATION &&
1776 changed & IEEE80211_RC_NSS_CHANGED)
1777 iwl_mvm_sf_update(mvm, vif, false);
1778}
1779
8ca151b5
JB		 1780static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1781 struct ieee80211_vif *vif, u16 ac,
1782 const struct ieee80211_tx_queue_params *params)
1783{
1784 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1785 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1786
1787 mvmvif->queue_params[ac] = *params;
1788
1789 /*
1790 * No need to update right away, we'll get BSS_CHANGED_QOS
1791 * The exception is P2P_DEVICE interface which needs immediate update.
1792 */
1793 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1794 int ret;
1795
1796 mutex_lock(&mvm->mutex);
1797 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1798 mutex_unlock(&mvm->mutex);
1799 return ret;
1800 }
1801 return 0;
1802}
1803
1804static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1805 struct ieee80211_vif *vif)
1806{
1807 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1808 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1809 200 + vif->bss_conf.beacon_int);
1810 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1811 100 + vif->bss_conf.beacon_int);
1812
1813 if (WARN_ON_ONCE(vif->bss_conf.assoc))
1814 return;
1815
1816 mutex_lock(&mvm->mutex);
1817 /* Try really hard to protect the session and hear a beacon */
016d27e1 1818 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
8ca151b5
JB		 1819 mutex_unlock(&mvm->mutex);
1820}
1821
35a000b7
DS		 1822static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
1823 struct ieee80211_vif *vif,
1824 struct cfg80211_sched_scan_request *req,
1825 struct ieee80211_sched_scan_ies *ies)
1826{
1827 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1828 int ret;
1829
1830 mutex_lock(&mvm->mutex);
1831
91b80256
AN		 1832 switch (mvm->scan_status) {
1833 case IWL_MVM_SCAN_OS:
1834 IWL_DEBUG_SCAN(mvm, "Stopping previous scan for sched_scan\n");
1835 ret = iwl_mvm_cancel_scan(mvm);
1836 if (ret) {
1837 ret = -EBUSY;
1838 goto out;
1839 }
1840
1841 /*
1842 * iwl_mvm_rx_scan_complete() will be called soon but will
1843 * not reset the scan status as it won't be IWL_MVM_SCAN_OS
1844 * any more since we queue the next scan immediately (below).
1845 * We make sure it is called before the next scan starts by
1846 * flushing the async-handlers work.
1847 */
1848 break;
1849 case IWL_MVM_SCAN_NONE:
1850 break;
1851 default:
35a000b7
DS		 1852 ret = -EBUSY;
1853 goto out;
1854 }
1855
1856 mvm->scan_status = IWL_MVM_SCAN_SCHED;
1857
1858 ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
1859 if (ret)
1860 goto err;
1861
1862 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
1863 if (ret)
1864 goto err;
1865
1866 ret = iwl_mvm_sched_scan_start(mvm, req);
1867 if (!ret)
1868 goto out;
1869err:
1870 mvm->scan_status = IWL_MVM_SCAN_NONE;
1871out:
1872 mutex_unlock(&mvm->mutex);
91b80256
AN		 1873 /* make sure to flush the Rx handler before the next scan arrives */
1874 iwl_mvm_wait_for_async_handlers(mvm);
35a000b7
DS		 1875 return ret;
1876}
1877
37e3308c
JB		 1878static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
1879 struct ieee80211_vif *vif)
35a000b7
DS		 1880{
1881 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
33ea27f6 1882 int ret;
35a000b7
DS		 1883
1884 mutex_lock(&mvm->mutex);
636a2cdc 1885 ret = iwl_mvm_sched_scan_stop(mvm, false);
35a000b7 1886 mutex_unlock(&mvm->mutex);
33ea27f6 1887 iwl_mvm_wait_for_async_handlers(mvm);
37e3308c 1888
33ea27f6 1889 return ret;
35a000b7
DS		 1890}
1891
8ca151b5
JB		 1892static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1893 enum set_key_cmd cmd,
1894 struct ieee80211_vif *vif,
1895 struct ieee80211_sta *sta,
1896 struct ieee80211_key_conf *key)
1897{
1898 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1899 int ret;
1900
1901 if (iwlwifi_mod_params.sw_crypto) {
1902 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1903 return -EOPNOTSUPP;
1904 }
1905
1906 switch (key->cipher) {
1907 case WLAN_CIPHER_SUITE_TKIP:
1908 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1909 /* fall-through */
1910 case WLAN_CIPHER_SUITE_CCMP:
1911 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1912 break;
1913 case WLAN_CIPHER_SUITE_AES_CMAC:
1914 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1915 break;
1916 case WLAN_CIPHER_SUITE_WEP40:
1917 case WLAN_CIPHER_SUITE_WEP104:
1918 /*
1919 * Support for TX only, at least for now, so accept
1920 * the key and do nothing else. Then mac80211 will
1921 * pass it for TX but we don't have to use it for RX.
1922 */
1923 return 0;
1924 default:
e36e5433
MS		 1925 /* currently FW supports only one optional cipher scheme */
1926 if (hw->n_cipher_schemes &&
1927 hw->cipher_schemes->cipher == key->cipher)
1928 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
1929 else
1930 return -EOPNOTSUPP;
8ca151b5
JB		 1931 }
1932
1933 mutex_lock(&mvm->mutex);
1934
1935 switch (cmd) {
1936 case SET_KEY:
5023d966
JB		 1937 if ((vif->type == NL80211_IFTYPE_ADHOC ||
1938 vif->type == NL80211_IFTYPE_AP) && !sta) {
1939 /*
1940 * GTK on AP interface is a TX-only key, return 0;
1941 * on IBSS they're per-station and because we're lazy
1942 * we don't support them for RX, so do the same.
1943 */
6caffd4f
JB		 1944 ret = 0;
1945 key->hw_key_idx = STA_KEY_IDX_INVALID;
1946 break;
1947 }
1948
8ca151b5
JB		 1949 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1950 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1951 if (ret) {
1952 IWL_WARN(mvm, "set key failed\n");
1953 /*
1954 * can't add key for RX, but we don't need it
1955 * in the device for TX so still return 0
1956 */
6caffd4f 1957 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 1958 ret = 0;
1959 }
1960
1961 break;
1962 case DISABLE_KEY:
6caffd4f
JB		 1963 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1964 ret = 0;
1965 break;
1966 }
1967
8ca151b5
JB		 1968 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1969 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1970 break;
1971 default:
1972 ret = -EINVAL;
1973 }
1974
1975 mutex_unlock(&mvm->mutex);
1976 return ret;
1977}
1978
1979static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1980 struct ieee80211_vif *vif,
1981 struct ieee80211_key_conf *keyconf,
1982 struct ieee80211_sta *sta,
1983 u32 iv32, u16 *phase1key)
1984{
1985 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1986
5023d966
JB		 1987 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
1988 return;
1989
8ca151b5
JB		 1990 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1991}
1992
1993
1994static int iwl_mvm_roc(struct ieee80211_hw *hw,
1995 struct ieee80211_vif *vif,
1996 struct ieee80211_channel *channel,
d339d5ca
IP		 1997 int duration,
1998 enum ieee80211_roc_type type)
8ca151b5
JB		 1999{
2000 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 2001 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 2002 struct cfg80211_chan_def chandef;
31d385ae
IP		 2003 struct iwl_mvm_phy_ctxt *phy_ctxt;
2004 int ret, i;
2005
2006 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2007 duration, type);
8ca151b5
JB		 2008
2009 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
2010 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
2011 return -EINVAL;
2012 }
2013
8ca151b5
JB		 2014 mutex_lock(&mvm->mutex);
2015
31d385ae
IP		 2016 for (i = 0; i < NUM_PHY_CTX; i++) {
2017 phy_ctxt = &mvm->phy_ctxts[i];
2018 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2019 continue;
2020
2021 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2022 /*
2023 * Unbind the P2P_DEVICE from the current PHY context,
2024 * and if the PHY context is not used remove it.
2025 */
2026 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2027 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2028 goto out_unlock;
2029
2030 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2031
2032 /* Bind the P2P_DEVICE to the current PHY Context */
2033 mvmvif->phy_ctxt = phy_ctxt;
2034
2035 ret = iwl_mvm_binding_add_vif(mvm, vif);
2036 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2037 goto out_unlock;
2038
2039 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2040 goto schedule_time_event;
2041 }
2042 }
2043
2044 /* Need to update the PHY context only if the ROC channel changed */
2045 if (channel == mvmvif->phy_ctxt->channel)
2046 goto schedule_time_event;
2047
8ca151b5 2048 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 2049
31d385ae
IP		 2050 /*
2051 * Change the PHY context configuration as it is currently referenced
2052 * only by the P2P Device MAC
2053 */
2054 if (mvmvif->phy_ctxt->ref == 1) {
2055 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2056 &chandef, 1, 1);
2057 if (ret)
2058 goto out_unlock;
2059 } else {
2060 /*
2061 * The PHY context is shared with other MACs. Need to remove the
2062 * P2P Device from the binding, allocate an new PHY context and
2063 * create a new binding
2064 */
2065 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2066 if (!phy_ctxt) {
2067 ret = -ENOSPC;
2068 goto out_unlock;
2069 }
2070
2071 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2072 1, 1);
2073 if (ret) {
2074 IWL_ERR(mvm, "Failed to change PHY context\n");
2075 goto out_unlock;
2076 }
2077
2078 /* Unbind the P2P_DEVICE from the current PHY context */
2079 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2080 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2081 goto out_unlock;
2082
2083 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2084
2085 /* Bind the P2P_DEVICE to the new allocated PHY context */
2086 mvmvif->phy_ctxt = phy_ctxt;
2087
2088 ret = iwl_mvm_binding_add_vif(mvm, vif);
2089 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2090 goto out_unlock;
2091
2092 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2093 }
2094
2095schedule_time_event:
8ca151b5 2096 /* Schedule the time events */
e635c797 2097 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 2098
31d385ae 2099out_unlock:
8ca151b5
JB		 2100 mutex_unlock(&mvm->mutex);
2101 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 2102 return ret;
2103}
2104
2105static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2106{
2107 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2108
2109 IWL_DEBUG_MAC80211(mvm, "enter\n");
2110
2111 mutex_lock(&mvm->mutex);
2112 iwl_mvm_stop_p2p_roc(mvm);
2113 mutex_unlock(&mvm->mutex);
2114
2115 IWL_DEBUG_MAC80211(mvm, "leave\n");
2116 return 0;
2117}
2118
2119static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2120 struct ieee80211_chanctx_conf *ctx)
2121{
2122 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 2123 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2124 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 2125 int ret;
2126
53a9d61e 2127 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 2128
8ca151b5 2129 mutex_lock(&mvm->mutex);
fe0f2de3
IP		 2130 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2131 if (!phy_ctxt) {
2132 ret = -ENOSPC;
2133 goto out;
2134 }
8ca151b5 2135
dcbc3e1a 2136 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
53a9d61e
IP		 2137 ctx->rx_chains_static,
2138 ctx->rx_chains_dynamic);
fe0f2de3
IP		 2139 if (ret) {
2140 IWL_ERR(mvm, "Failed to add PHY context\n");
2141 goto out;
2142 }
2143
53a9d61e 2144 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 2145 *phy_ctxt_id = phy_ctxt->id;
2146out:
8ca151b5
JB		 2147 mutex_unlock(&mvm->mutex);
2148 return ret;
2149}
2150
2151static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2152 struct ieee80211_chanctx_conf *ctx)
2153{
2154 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 2155 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2156 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 2157
2158 mutex_lock(&mvm->mutex);
fe0f2de3 2159 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
8ca151b5
JB		 2160 mutex_unlock(&mvm->mutex);
2161}
2162
2163static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2164 struct ieee80211_chanctx_conf *ctx,
2165 u32 changed)
2166{
2167 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 2168 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2169 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 2170
31d385ae
IP		 2171 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2172 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2173 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2dceedae
AN		 2174 IEEE80211_CHANCTX_CHANGE_RADAR |
2175 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
31d385ae
IP		 2176 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2177 phy_ctxt->ref, changed))
2178 return;
2179
8ca151b5 2180 mutex_lock(&mvm->mutex);
dcbc3e1a 2181 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
8ca151b5
JB		 2182 ctx->rx_chains_static,
2183 ctx->rx_chains_dynamic);
8e484f0b 2184 iwl_mvm_bt_coex_vif_change(mvm);
8ca151b5
JB		 2185 mutex_unlock(&mvm->mutex);
2186}
2187
2188static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2189 struct ieee80211_vif *vif,
2190 struct ieee80211_chanctx_conf *ctx)
2191{
2192 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 2193 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2194 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 2195 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2196 int ret;
2197
2198 mutex_lock(&mvm->mutex);
2199
fe0f2de3 2200 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 2201
2202 switch (vif->type) {
2203 case NL80211_IFTYPE_AP:
bd3398e2
AO		 2204 /* Unless it's a CSA flow we have nothing to do here */
2205 if (vif->csa_active) {
2206 mvmvif->ap_ibss_active = true;
2207 break;
2208 }
5023d966 2209 case NL80211_IFTYPE_ADHOC:
8ca151b5
JB		 2210 /*
2211 * The AP binding flow is handled as part of the start_ap flow
5023d966 2212 * (in bss_info_changed), similarly for IBSS.
8ca151b5
JB		 2213 */
2214 ret = 0;
2215 goto out_unlock;
2216 case NL80211_IFTYPE_STATION:
8ca151b5
JB		 2217 case NL80211_IFTYPE_MONITOR:
2218 break;
2219 default:
2220 ret = -EINVAL;
2221 goto out_unlock;
2222 }
2223
2224 ret = iwl_mvm_binding_add_vif(mvm, vif);
2225 if (ret)
2226 goto out_unlock;
2227
2228 /*
92d85562
AB		 2229 * Power state must be updated before quotas,
2230 * otherwise fw will complain.
2231 */
e5e7aa8e 2232 iwl_mvm_power_update_mac(mvm, vif);
92d85562
AB		 2233
2234 /* Setting the quota at this stage is only required for monitor
8ca151b5
JB		 2235 * interfaces. For the other types, the bss_info changed flow
2236 * will handle quota settings.
2237 */
2238 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 2239 mvmvif->monitor_active = true;
8ca151b5
JB		 2240 ret = iwl_mvm_update_quotas(mvm, vif);
2241 if (ret)
2242 goto out_remove_binding;
2243 }
2244
bd3398e2
AO		 2245 /* Handle binding during CSA */
2246 if (vif->type == NL80211_IFTYPE_AP) {
2247 iwl_mvm_update_quotas(mvm, vif);
2248 iwl_mvm_mac_ctxt_changed(mvm, vif);
2249 }
2250
8ca151b5
JB		 2251 goto out_unlock;
2252
2253 out_remove_binding:
2254 iwl_mvm_binding_remove_vif(mvm, vif);
e5e7aa8e 2255 iwl_mvm_power_update_mac(mvm, vif);
8ca151b5
JB		 2256 out_unlock:
2257 mutex_unlock(&mvm->mutex);
2258 if (ret)
2259 mvmvif->phy_ctxt = NULL;
2260 return ret;
2261}
2262
2263static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2264 struct ieee80211_vif *vif,
2265 struct ieee80211_chanctx_conf *ctx)
2266{
2267 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2268 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2269
2270 mutex_lock(&mvm->mutex);
2271
2272 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2273
8ca151b5 2274 switch (vif->type) {
5023d966
JB		 2275 case NL80211_IFTYPE_ADHOC:
2276 goto out_unlock;
8ca151b5 2277 case NL80211_IFTYPE_MONITOR:
1e1391ca
IP		 2278 mvmvif->monitor_active = false;
2279 iwl_mvm_update_quotas(mvm, NULL);
8ca151b5 2280 break;
bd3398e2
AO		 2281 case NL80211_IFTYPE_AP:
2282 /* This part is triggered only during CSA */
2283 if (!vif->csa_active || !mvmvif->ap_ibss_active)
2284 goto out_unlock;
2285
2286 mvmvif->ap_ibss_active = false;
2287 iwl_mvm_update_quotas(mvm, NULL);
2288 /*TODO: bt_coex notification here? */
8ca151b5
JB		 2289 default:
2290 break;
2291 }
2292
1e1391ca 2293 iwl_mvm_binding_remove_vif(mvm, vif);
e5e7aa8e 2294 iwl_mvm_power_update_mac(mvm, vif);
1c2abf72 2295
a11e144e
IP		 2296out_unlock:
2297 mvmvif->phy_ctxt = NULL;
8ca151b5
JB		 2298 mutex_unlock(&mvm->mutex);
2299}
2300
2301static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2302 struct ieee80211_sta *sta,
2303 bool set)
2304{
2305 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2306 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2307
2308 if (!mvm_sta || !mvm_sta->vif) {
2309 IWL_ERR(mvm, "Station is not associated to a vif\n");
2310 return -EINVAL;
2311 }
2312
2313 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2314}
2315
507cadf2
DS		 2316#ifdef CONFIG_NL80211_TESTMODE
2317static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2318 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2319 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
f6c6ad42 2320 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
507cadf2
DS		 2321};
2322
2323static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
2324 struct ieee80211_vif *vif,
2325 void *data, int len)
2326{
2327 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
2328 int err;
2329 u32 noa_duration;
2330
2331 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
2332 if (err)
2333 return err;
2334
2335 if (!tb[IWL_MVM_TM_ATTR_CMD])
2336 return -EINVAL;
2337
2338 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
2339 case IWL_MVM_TM_CMD_SET_NOA:
2340 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
2341 !vif->bss_conf.enable_beacon ||
2342 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
2343 return -EINVAL;
2344
2345 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
2346 if (noa_duration >= vif->bss_conf.beacon_int)
2347 return -EINVAL;
2348
2349 mvm->noa_duration = noa_duration;
2350 mvm->noa_vif = vif;
2351
2352 return iwl_mvm_update_quotas(mvm, NULL);
f6c6ad42
JB		 2353 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
2354 /* must be associated client vif - ignore authorized */
2355 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
2356 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
2357 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
2358 return -EINVAL;
2359
2360 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3dd37d05
EP		 2361 return iwl_mvm_enable_beacon_filter(mvm, vif,
2362 CMD_SYNC);
2363 return iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC);
507cadf2
DS		 2364 }
2365
2366 return -EOPNOTSUPP;
2367}
2368
2369static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
2370 struct ieee80211_vif *vif,
2371 void *data, int len)
2372{
2373 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2374 int err;
2375
2376 mutex_lock(&mvm->mutex);
2377 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
2378 mutex_unlock(&mvm->mutex);
2379
2380 return err;
2381}
2382#endif
2383
bd3398e2
AO		 2384static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
2385 struct ieee80211_vif *vif,
2386 struct cfg80211_chan_def *chandef)
2387{
2388 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2389
2390 mutex_lock(&mvm->mutex);
2391 if (WARN(mvm->csa_vif && mvm->csa_vif->csa_active,
2392 "Another CSA is already in progress"))
2393 goto out_unlock;
2394
2395 IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
2396 chandef->center_freq1);
2397 mvm->csa_vif = vif;
2398
2399out_unlock:
2400 mutex_unlock(&mvm->mutex);
2401}
2402
c5b0e7c0
EG		 2403static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
2404 struct ieee80211_vif *vif, u32 queues, bool drop)
2405{
2406 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2407 struct iwl_mvm_vif *mvmvif;
2408 struct iwl_mvm_sta *mvmsta;
2409
2410 if (!vif || vif->type != NL80211_IFTYPE_STATION)
2411 return;
2412
2413 mutex_lock(&mvm->mutex);
2414 mvmvif = iwl_mvm_vif_from_mac80211(vif);
2415 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
2416
2417 if (WARN_ON_ONCE(!mvmsta))
2418 goto done;
2419
2420 if (drop) {
2421 if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
2422 IWL_ERR(mvm, "flush request fail\n");
2423 } else {
2424 iwl_trans_wait_tx_queue_empty(mvm->trans,
2425 mvmsta->tfd_queue_msk);
2426 }
2427done:
2428 mutex_unlock(&mvm->mutex);
2429}
2430
e5209263 2431const struct ieee80211_ops iwl_mvm_hw_ops = {
8ca151b5
JB		 2432 .tx = iwl_mvm_mac_tx,
2433 .ampdu_action = iwl_mvm_mac_ampdu_action,
2434 .start = iwl_mvm_mac_start,
2435 .restart_complete = iwl_mvm_mac_restart_complete,
2436 .stop = iwl_mvm_mac_stop,
2437 .add_interface = iwl_mvm_mac_add_interface,
2438 .remove_interface = iwl_mvm_mac_remove_interface,
2439 .config = iwl_mvm_mac_config,
e59647ea 2440 .prepare_multicast = iwl_mvm_prepare_multicast,
8ca151b5
JB		 2441 .configure_filter = iwl_mvm_configure_filter,
2442 .bss_info_changed = iwl_mvm_bss_info_changed,
2443 .hw_scan = iwl_mvm_mac_hw_scan,
2444 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1ddbbb0c 2445 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
8ca151b5
JB		 2446 .sta_state = iwl_mvm_mac_sta_state,
2447 .sta_notify = iwl_mvm_mac_sta_notify,
2448 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3e56eadf 2449 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
8ca151b5 2450 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1f3b0ff8 2451 .sta_rc_update = iwl_mvm_sta_rc_update,
8ca151b5
JB		 2452 .conf_tx = iwl_mvm_mac_conf_tx,
2453 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
c5b0e7c0 2454 .flush = iwl_mvm_mac_flush,
35a000b7
DS		 2455 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
2456 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
8ca151b5
JB		 2457 .set_key = iwl_mvm_mac_set_key,
2458 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
2459 .remain_on_channel = iwl_mvm_roc,
2460 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
8ca151b5
JB		 2461 .add_chanctx = iwl_mvm_add_chanctx,
2462 .remove_chanctx = iwl_mvm_remove_chanctx,
2463 .change_chanctx = iwl_mvm_change_chanctx,
2464 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
2465 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
2466
5023d966
JB		 2467 .start_ap = iwl_mvm_start_ap_ibss,
2468 .stop_ap = iwl_mvm_stop_ap_ibss,
2469 .join_ibss = iwl_mvm_start_ap_ibss,
2470 .leave_ibss = iwl_mvm_stop_ap_ibss,
8ca151b5
JB		 2471
2472 .set_tim = iwl_mvm_set_tim,
2473
bd3398e2
AO		 2474 .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
2475
507cadf2
DS		 2476 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
2477
8ca151b5
JB		 2478#ifdef CONFIG_PM_SLEEP
2479 /* look at d3.c */
2480 .suspend = iwl_mvm_suspend,
2481 .resume = iwl_mvm_resume,
2482 .set_wakeup = iwl_mvm_set_wakeup,
2483 .set_rekey_data = iwl_mvm_set_rekey_data,
2484#if IS_ENABLED(CONFIG_IPV6)
2485 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
2486#endif
2487 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
2488#endif
2489};
Linux 6.x block layer and io_uring tree(s)