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iwlwifi: mvm: support random MAC address for scanning
[mirror_ubuntu-bionic-kernel.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
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 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
27 *
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65 #include <linux/kernel.h>
66 #include <linux/slab.h>
67 #include <linux/skbuff.h>
68 #include <linux/netdevice.h>
69 #include <linux/etherdevice.h>
70 #include <linux/ip.h>
71 #include <linux/if_arp.h>
72 #include <linux/devcoredump.h>
73 #include <net/mac80211.h>
74 #include <net/ieee80211_radiotap.h>
75 #include <net/tcp.h>
76
77 #include "iwl-op-mode.h"
78 #include "iwl-io.h"
79 #include "mvm.h"
80 #include "sta.h"
81 #include "time-event.h"
82 #include "iwl-eeprom-parse.h"
83 #include "fw-api-scan.h"
84 #include "iwl-phy-db.h"
85 #include "testmode.h"
86 #include "iwl-fw-error-dump.h"
87 #include "iwl-prph.h"
88
89 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
90 {
91 .max = 1,
92 .types = BIT(NL80211_IFTYPE_STATION),
93 },
94 {
95 .max = 1,
96 .types = BIT(NL80211_IFTYPE_AP) |
97 BIT(NL80211_IFTYPE_P2P_CLIENT) |
98 BIT(NL80211_IFTYPE_P2P_GO),
99 },
100 {
101 .max = 1,
102 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
103 },
104 };
105
106 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
107 {
108 .num_different_channels = 1,
109 .max_interfaces = 3,
110 .limits = iwl_mvm_limits,
111 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
112 },
113 };
114
115 #ifdef CONFIG_PM_SLEEP
116 static const struct nl80211_wowlan_tcp_data_token_feature
117 iwl_mvm_wowlan_tcp_token_feature = {
118 .min_len = 0,
119 .max_len = 255,
120 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
121 };
122
123 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
124 .tok = &iwl_mvm_wowlan_tcp_token_feature,
125 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
126 sizeof(struct ethhdr) -
127 sizeof(struct iphdr) -
128 sizeof(struct tcphdr),
129 .data_interval_max = 65535, /* __le16 in API */
130 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
131 sizeof(struct ethhdr) -
132 sizeof(struct iphdr) -
133 sizeof(struct tcphdr),
134 .seq = true,
135 };
136 #endif
137
138 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
139 /*
140 * Use the reserved field to indicate magic values.
141 * these values will only be used internally by the driver,
142 * and won't make it to the fw (reserved will be 0).
143 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
144 * be the vif's ip address. in case there is not a single
145 * ip address (0, or more than 1), this attribute will
146 * be skipped.
147 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
148 * the LSB bytes of the vif's mac address
149 */
150 enum {
151 BC_FILTER_MAGIC_NONE = 0,
152 BC_FILTER_MAGIC_IP,
153 BC_FILTER_MAGIC_MAC,
154 };
155
156 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
157 {
158 /* arp */
159 .discard = 0,
160 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
161 .attrs = {
162 {
163 /* frame type - arp, hw type - ethernet */
164 .offset_type =
165 BCAST_FILTER_OFFSET_PAYLOAD_START,
166 .offset = sizeof(rfc1042_header),
167 .val = cpu_to_be32(0x08060001),
168 .mask = cpu_to_be32(0xffffffff),
169 },
170 {
171 /* arp dest ip */
172 .offset_type =
173 BCAST_FILTER_OFFSET_PAYLOAD_START,
174 .offset = sizeof(rfc1042_header) + 2 +
175 sizeof(struct arphdr) +
176 ETH_ALEN + sizeof(__be32) +
177 ETH_ALEN,
178 .mask = cpu_to_be32(0xffffffff),
179 /* mark it as special field */
180 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
181 },
182 },
183 },
184 {
185 /* dhcp offer bcast */
186 .discard = 0,
187 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
188 .attrs = {
189 {
190 /* udp dest port - 68 (bootp client)*/
191 .offset_type = BCAST_FILTER_OFFSET_IP_END,
192 .offset = offsetof(struct udphdr, dest),
193 .val = cpu_to_be32(0x00440000),
194 .mask = cpu_to_be32(0xffff0000),
195 },
196 {
197 /* dhcp - lsb bytes of client hw address */
198 .offset_type = BCAST_FILTER_OFFSET_IP_END,
199 .offset = 38,
200 .mask = cpu_to_be32(0xffffffff),
201 /* mark it as special field */
202 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
203 },
204 },
205 },
206 /* last filter must be empty */
207 {},
208 };
209 #endif
210
211 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
212 {
213 if (!iwl_mvm_is_d0i3_supported(mvm))
214 return;
215
216 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
217 spin_lock_bh(&mvm->refs_lock);
218 mvm->refs[ref_type]++;
219 spin_unlock_bh(&mvm->refs_lock);
220 iwl_trans_ref(mvm->trans);
221 }
222
223 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
224 {
225 if (!iwl_mvm_is_d0i3_supported(mvm))
226 return;
227
228 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
229 spin_lock_bh(&mvm->refs_lock);
230 WARN_ON(!mvm->refs[ref_type]--);
231 spin_unlock_bh(&mvm->refs_lock);
232 iwl_trans_unref(mvm->trans);
233 }
234
235 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
236 enum iwl_mvm_ref_type except_ref)
237 {
238 int i, j;
239
240 if (!iwl_mvm_is_d0i3_supported(mvm))
241 return;
242
243 spin_lock_bh(&mvm->refs_lock);
244 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
245 if (except_ref == i || !mvm->refs[i])
246 continue;
247
248 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
249 i, mvm->refs[i]);
250 for (j = 0; j < mvm->refs[i]; j++)
251 iwl_trans_unref(mvm->trans);
252 mvm->refs[i] = 0;
253 }
254 spin_unlock_bh(&mvm->refs_lock);
255 }
256
257 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
258 {
259 int i;
260 bool taken = false;
261
262 if (!iwl_mvm_is_d0i3_supported(mvm))
263 return true;
264
265 spin_lock_bh(&mvm->refs_lock);
266 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
267 if (mvm->refs[i]) {
268 taken = true;
269 break;
270 }
271 }
272 spin_unlock_bh(&mvm->refs_lock);
273
274 return taken;
275 }
276
277 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
278 {
279 iwl_mvm_ref(mvm, ref_type);
280
281 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
282 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
283 HZ)) {
284 WARN_ON_ONCE(1);
285 iwl_mvm_unref(mvm, ref_type);
286 return -EIO;
287 }
288
289 return 0;
290 }
291
292 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
293 {
294 int i;
295
296 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
297 for (i = 0; i < NUM_PHY_CTX; i++) {
298 mvm->phy_ctxts[i].id = i;
299 mvm->phy_ctxts[i].ref = 0;
300 }
301 }
302
303 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
304 {
305 struct ieee80211_hw *hw = mvm->hw;
306 int num_mac, ret, i;
307
308 /* Tell mac80211 our characteristics */
309 hw->flags = IEEE80211_HW_SIGNAL_DBM |
310 IEEE80211_HW_SPECTRUM_MGMT |
311 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
312 IEEE80211_HW_QUEUE_CONTROL |
313 IEEE80211_HW_WANT_MONITOR_VIF |
314 IEEE80211_HW_SUPPORTS_PS |
315 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
316 IEEE80211_HW_AMPDU_AGGREGATION |
317 IEEE80211_HW_TIMING_BEACON_ONLY |
318 IEEE80211_HW_CONNECTION_MONITOR |
319 IEEE80211_HW_CHANCTX_STA_CSA |
320 IEEE80211_HW_SUPPORTS_CLONED_SKBS;
321
322 hw->queues = mvm->first_agg_queue;
323 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
324 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
325 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
326 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
327 hw->rate_control_algorithm = "iwl-mvm-rs";
328
329 /*
330 * Enable 11w if advertised by firmware and software crypto
331 * is not enabled (as the firmware will interpret some mgmt
332 * packets, so enabling it with software crypto isn't safe)
333 */
334 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
335 !iwlwifi_mod_params.sw_crypto)
336 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
337
338 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
339 IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 &&
340 !iwlwifi_mod_params.uapsd_disable) {
341 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
342 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
343 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
344 }
345
346 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN ||
347 mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
348 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
349 hw->wiphy->features |=
350 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
351 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
352 }
353
354 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
355 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
356 hw->chanctx_data_size = sizeof(u16);
357
358 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
359 BIT(NL80211_IFTYPE_P2P_CLIENT) |
360 BIT(NL80211_IFTYPE_AP) |
361 BIT(NL80211_IFTYPE_P2P_GO) |
362 BIT(NL80211_IFTYPE_P2P_DEVICE) |
363 BIT(NL80211_IFTYPE_ADHOC);
364
365 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
366 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
367 REGULATORY_DISABLE_BEACON_HINTS;
368
369 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
370 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
371
372 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW)
373 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
374
375 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
376 hw->wiphy->n_iface_combinations =
377 ARRAY_SIZE(iwl_mvm_iface_combinations);
378
379 hw->wiphy->max_remain_on_channel_duration = 10000;
380 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
381
382 /* Extract MAC address */
383 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
384 hw->wiphy->addresses = mvm->addresses;
385 hw->wiphy->n_addresses = 1;
386
387 /* Extract additional MAC addresses if available */
388 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
389 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
390
391 for (i = 1; i < num_mac; i++) {
392 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
393 ETH_ALEN);
394 mvm->addresses[i].addr[5]++;
395 hw->wiphy->n_addresses++;
396 }
397
398 iwl_mvm_reset_phy_ctxts(mvm);
399
400 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
401
402 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
403
404 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
405 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
406 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
407 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
408 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
409 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
410
411 hw->wiphy->hw_version = mvm->trans->hw_id;
412
413 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
414 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
415 else
416 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
417
418 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
419 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
420 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
421 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
422 /* we create the 802.11 header and zero length SSID IE. */
423 hw->wiphy->max_sched_scan_ie_len =
424 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
425 }
426
427 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
428 NL80211_FEATURE_LOW_PRIORITY_SCAN |
429 NL80211_FEATURE_P2P_GO_OPPPS |
430 NL80211_FEATURE_DYNAMIC_SMPS |
431 NL80211_FEATURE_STATIC_SMPS |
432 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
433
434 if (mvm->fw->ucode_capa.capa[0] &
435 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
436 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
437 if (mvm->fw->ucode_capa.capa[0] &
438 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
439 hw->wiphy->features |= NL80211_FEATURE_QUIET;
440
441 if (mvm->fw->ucode_capa.capa[0] &
442 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
443 hw->wiphy->features |=
444 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
445
446 if (mvm->fw->ucode_capa.capa[0] &
447 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
448 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
449
450 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
451
452 /* currently FW API supports only one optional cipher scheme */
453 if (mvm->fw->cs[0].cipher) {
454 mvm->hw->n_cipher_schemes = 1;
455 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
456 }
457
458 #ifdef CONFIG_PM_SLEEP
459 if (iwl_mvm_is_d0i3_supported(mvm) &&
460 device_can_wakeup(mvm->trans->dev)) {
461 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
462 hw->wiphy->wowlan = &mvm->wowlan;
463 } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
464 mvm->trans->ops->d3_suspend &&
465 mvm->trans->ops->d3_resume &&
466 device_can_wakeup(mvm->trans->dev)) {
467 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
468 WIPHY_WOWLAN_DISCONNECT |
469 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
470 WIPHY_WOWLAN_RFKILL_RELEASE;
471 if (!iwlwifi_mod_params.sw_crypto)
472 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
473 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
474 WIPHY_WOWLAN_4WAY_HANDSHAKE;
475
476 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
477 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
478 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
479 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
480 hw->wiphy->wowlan = &mvm->wowlan;
481 }
482 #endif
483
484 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
485 /* assign default bcast filtering configuration */
486 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
487 #endif
488
489 ret = iwl_mvm_leds_init(mvm);
490 if (ret)
491 return ret;
492
493 ret = ieee80211_register_hw(mvm->hw);
494 if (ret)
495 iwl_mvm_leds_exit(mvm);
496
497 return ret;
498 }
499
500 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
501 struct ieee80211_sta *sta,
502 struct sk_buff *skb)
503 {
504 struct iwl_mvm_sta *mvmsta;
505 bool defer = false;
506
507 /*
508 * double check the IN_D0I3 flag both before and after
509 * taking the spinlock, in order to prevent taking
510 * the spinlock when not needed.
511 */
512 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
513 return false;
514
515 spin_lock(&mvm->d0i3_tx_lock);
516 /*
517 * testing the flag again ensures the skb dequeue
518 * loop (on d0i3 exit) hasn't run yet.
519 */
520 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
521 goto out;
522
523 mvmsta = iwl_mvm_sta_from_mac80211(sta);
524 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
525 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
526 goto out;
527
528 __skb_queue_tail(&mvm->d0i3_tx, skb);
529 ieee80211_stop_queues(mvm->hw);
530
531 /* trigger wakeup */
532 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
533 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
534
535 defer = true;
536 out:
537 spin_unlock(&mvm->d0i3_tx_lock);
538 return defer;
539 }
540
541 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
542 struct ieee80211_tx_control *control,
543 struct sk_buff *skb)
544 {
545 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
546 struct ieee80211_sta *sta = control->sta;
547 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
548 struct ieee80211_hdr *hdr = (void *)skb->data;
549
550 if (iwl_mvm_is_radio_killed(mvm)) {
551 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
552 goto drop;
553 }
554
555 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
556 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
557 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
558 goto drop;
559
560 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
561 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
562 ieee80211_is_mgmt(hdr->frame_control) &&
563 !ieee80211_is_deauth(hdr->frame_control) &&
564 !ieee80211_is_disassoc(hdr->frame_control) &&
565 !ieee80211_is_action(hdr->frame_control)))
566 sta = NULL;
567
568 if (sta) {
569 if (iwl_mvm_defer_tx(mvm, sta, skb))
570 return;
571 if (iwl_mvm_tx_skb(mvm, skb, sta))
572 goto drop;
573 return;
574 }
575
576 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
577 goto drop;
578 return;
579 drop:
580 ieee80211_free_txskb(hw, skb);
581 }
582
583 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
584 {
585 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
586 return false;
587 return true;
588 }
589
590 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
591 {
592 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
593 return false;
594 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
595 return true;
596
597 /* enabled by default */
598 return true;
599 }
600
601 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
602 struct ieee80211_vif *vif,
603 enum ieee80211_ampdu_mlme_action action,
604 struct ieee80211_sta *sta, u16 tid,
605 u16 *ssn, u8 buf_size)
606 {
607 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
608 int ret;
609 bool tx_agg_ref = false;
610
611 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
612 sta->addr, tid, action);
613
614 if (!(mvm->nvm_data->sku_cap_11n_enable))
615 return -EACCES;
616
617 /* return from D0i3 before starting a new Tx aggregation */
618 switch (action) {
619 case IEEE80211_AMPDU_TX_START:
620 case IEEE80211_AMPDU_TX_STOP_CONT:
621 case IEEE80211_AMPDU_TX_STOP_FLUSH:
622 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
623 case IEEE80211_AMPDU_TX_OPERATIONAL:
624 /*
625 * for tx start, wait synchronously until D0i3 exit to
626 * get the correct sequence number for the tid.
627 * additionally, some other ampdu actions use direct
628 * target access, which is not handled automatically
629 * by the trans layer (unlike commands), so wait for
630 * d0i3 exit in these cases as well.
631 */
632 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
633 if (ret)
634 return ret;
635
636 tx_agg_ref = true;
637 break;
638 default:
639 break;
640 }
641
642 mutex_lock(&mvm->mutex);
643
644 switch (action) {
645 case IEEE80211_AMPDU_RX_START:
646 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
647 ret = -EINVAL;
648 break;
649 }
650 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
651 break;
652 case IEEE80211_AMPDU_RX_STOP:
653 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
654 break;
655 case IEEE80211_AMPDU_TX_START:
656 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
657 ret = -EINVAL;
658 break;
659 }
660 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
661 break;
662 case IEEE80211_AMPDU_TX_STOP_CONT:
663 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
664 break;
665 case IEEE80211_AMPDU_TX_STOP_FLUSH:
666 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
667 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
668 break;
669 case IEEE80211_AMPDU_TX_OPERATIONAL:
670 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
671 break;
672 default:
673 WARN_ON_ONCE(1);
674 ret = -EINVAL;
675 break;
676 }
677 mutex_unlock(&mvm->mutex);
678
679 /*
680 * If the tid is marked as started, we won't use it for offloaded
681 * traffic on the next D0i3 entry. It's safe to unref.
682 */
683 if (tx_agg_ref)
684 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
685
686 return ret;
687 }
688
689 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
690 struct ieee80211_vif *vif)
691 {
692 struct iwl_mvm *mvm = data;
693 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
694
695 mvmvif->uploaded = false;
696 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
697
698 /* does this make sense at all? */
699 mvmvif->color++;
700
701 spin_lock_bh(&mvm->time_event_lock);
702 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
703 spin_unlock_bh(&mvm->time_event_lock);
704
705 mvmvif->phy_ctxt = NULL;
706 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
707 }
708
709 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
710 const void *data, size_t datalen)
711 {
712 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
713 ssize_t bytes_read;
714 ssize_t bytes_read_trans;
715
716 if (offset < dump_ptrs->op_mode_len) {
717 bytes_read = min_t(ssize_t, count,
718 dump_ptrs->op_mode_len - offset);
719 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
720 bytes_read);
721 offset += bytes_read;
722 count -= bytes_read;
723
724 if (count == 0)
725 return bytes_read;
726 } else {
727 bytes_read = 0;
728 }
729
730 if (!dump_ptrs->trans_ptr)
731 return bytes_read;
732
733 offset -= dump_ptrs->op_mode_len;
734 bytes_read_trans = min_t(ssize_t, count,
735 dump_ptrs->trans_ptr->len - offset);
736 memcpy(buffer + bytes_read,
737 (u8 *)dump_ptrs->trans_ptr->data + offset,
738 bytes_read_trans);
739
740 return bytes_read + bytes_read_trans;
741 }
742
743 static void iwl_mvm_free_coredump(const void *data)
744 {
745 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
746
747 vfree(fw_error_dump->op_mode_ptr);
748 vfree(fw_error_dump->trans_ptr);
749 kfree(fw_error_dump);
750 }
751
752 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
753 {
754 struct iwl_fw_error_dump_file *dump_file;
755 struct iwl_fw_error_dump_data *dump_data;
756 struct iwl_fw_error_dump_info *dump_info;
757 struct iwl_mvm_dump_ptrs *fw_error_dump;
758 const struct fw_img *img;
759 u32 sram_len, sram_ofs;
760 u32 file_len, rxf_len;
761 unsigned long flags;
762 int reg_val;
763
764 lockdep_assert_held(&mvm->mutex);
765
766 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
767 if (!fw_error_dump)
768 return;
769
770 img = &mvm->fw->img[mvm->cur_ucode];
771 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
772 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
773
774 /* reading buffer size */
775 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
776 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
777
778 /* the register holds the value divided by 128 */
779 rxf_len = rxf_len << 7;
780
781 file_len = sizeof(*dump_file) +
782 sizeof(*dump_data) * 3 +
783 sram_len +
784 rxf_len +
785 sizeof(*dump_info);
786
787 dump_file = vzalloc(file_len);
788 if (!dump_file) {
789 kfree(fw_error_dump);
790 return;
791 }
792
793 fw_error_dump->op_mode_ptr = dump_file;
794
795 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
796 dump_data = (void *)dump_file->data;
797
798 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
799 dump_data->len = cpu_to_le32(sizeof(*dump_info));
800 dump_info = (void *) dump_data->data;
801 dump_info->device_family =
802 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
803 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
804 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
805 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
806 sizeof(dump_info->fw_human_readable));
807 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
808 sizeof(dump_info->dev_human_readable));
809 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
810 sizeof(dump_info->bus_human_readable));
811
812 dump_data = iwl_fw_error_next_data(dump_data);
813 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
814 dump_data->len = cpu_to_le32(rxf_len);
815
816 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
817 u32 *rxf = (void *)dump_data->data;
818 int i;
819
820 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
821 iwl_trans_write_prph(mvm->trans,
822 RXF_LD_FENCE_OFFSET_ADDR,
823 i * sizeof(u32));
824 rxf[i] = iwl_trans_read_prph(mvm->trans,
825 RXF_FIFO_RD_FENCE_ADDR);
826 }
827 iwl_trans_release_nic_access(mvm->trans, &flags);
828 }
829
830 dump_data = iwl_fw_error_next_data(dump_data);
831 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
832 dump_data->len = cpu_to_le32(sram_len);
833 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
834 sram_len);
835
836 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
837 fw_error_dump->op_mode_len = file_len;
838 if (fw_error_dump->trans_ptr)
839 file_len += fw_error_dump->trans_ptr->len;
840 dump_file->file_len = cpu_to_le32(file_len);
841
842 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
843 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
844 }
845
846 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
847 {
848 /* clear the D3 reconfig, we only need it to avoid dumping a
849 * firmware coredump on reconfiguration, we shouldn't do that
850 * on D3->D0 transition
851 */
852 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status))
853 iwl_mvm_fw_error_dump(mvm);
854
855 iwl_trans_stop_device(mvm->trans);
856
857 mvm->scan_status = IWL_MVM_SCAN_NONE;
858 mvm->ps_disabled = false;
859 mvm->calibrating = false;
860
861 /* just in case one was running */
862 ieee80211_remain_on_channel_expired(mvm->hw);
863
864 ieee80211_iterate_active_interfaces_atomic(
865 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
866 iwl_mvm_cleanup_iterator, mvm);
867
868 mvm->p2p_device_vif = NULL;
869 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
870
871 iwl_mvm_reset_phy_ctxts(mvm);
872 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
873 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
874 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
875 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
876 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
877 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
878 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
879 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
880
881 ieee80211_wake_queues(mvm->hw);
882
883 /* cleanup all stale references (scan, roc), but keep the
884 * ucode_down ref until reconfig is complete */
885 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
886
887 /* clear any stale d0i3 state */
888 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
889
890 mvm->vif_count = 0;
891 mvm->rx_ba_sessions = 0;
892 }
893
894 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
895 {
896 int ret;
897
898 lockdep_assert_held(&mvm->mutex);
899
900 /* Clean up some internal and mac80211 state on restart */
901 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
902 iwl_mvm_restart_cleanup(mvm);
903
904 ret = iwl_mvm_up(mvm);
905
906 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
907 /* Something went wrong - we need to finish some cleanup
908 * that normally iwl_mvm_mac_restart_complete() below
909 * would do.
910 */
911 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
912 iwl_mvm_d0i3_enable_tx(mvm, NULL);
913 }
914
915 return ret;
916 }
917
918 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
919 {
920 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
921 int ret;
922
923 mutex_lock(&mvm->mutex);
924 ret = __iwl_mvm_mac_start(mvm);
925 mutex_unlock(&mvm->mutex);
926
927 return ret;
928 }
929
930 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
931 {
932 int ret;
933
934 mutex_lock(&mvm->mutex);
935
936 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
937 iwl_mvm_d0i3_enable_tx(mvm, NULL);
938 ret = iwl_mvm_update_quotas(mvm, NULL);
939 if (ret)
940 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
941 ret);
942
943 /* allow transport/FW low power modes */
944 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
945
946 mutex_unlock(&mvm->mutex);
947 }
948
949 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
950 {
951 bool exit_now;
952
953 if (!iwl_mvm_is_d0i3_supported(mvm))
954 return;
955
956 mutex_lock(&mvm->d0i3_suspend_mutex);
957 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
958 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
959 &mvm->d0i3_suspend_flags);
960 mutex_unlock(&mvm->d0i3_suspend_mutex);
961
962 if (exit_now) {
963 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
964 _iwl_mvm_exit_d0i3(mvm);
965 }
966 }
967
968 static void
969 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
970 enum ieee80211_reconfig_type reconfig_type)
971 {
972 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
973
974 switch (reconfig_type) {
975 case IEEE80211_RECONFIG_TYPE_RESTART:
976 iwl_mvm_restart_complete(mvm);
977 break;
978 case IEEE80211_RECONFIG_TYPE_SUSPEND:
979 iwl_mvm_resume_complete(mvm);
980 break;
981 }
982 }
983
984 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
985 {
986 lockdep_assert_held(&mvm->mutex);
987
988 /* disallow low power states when the FW is down */
989 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
990
991 /* async_handlers_wk is now blocked */
992
993 /*
994 * The work item could be running or queued if the
995 * ROC time event stops just as we get here.
996 */
997 cancel_work_sync(&mvm->roc_done_wk);
998
999 iwl_trans_stop_device(mvm->trans);
1000
1001 iwl_mvm_async_handlers_purge(mvm);
1002 /* async_handlers_list is empty and will stay empty: HW is stopped */
1003
1004 /* the fw is stopped, the aux sta is dead: clean up driver state */
1005 iwl_mvm_del_aux_sta(mvm);
1006
1007 mvm->ucode_loaded = false;
1008 }
1009
1010 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1011 {
1012 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1013
1014 flush_work(&mvm->d0i3_exit_work);
1015 flush_work(&mvm->async_handlers_wk);
1016 flush_work(&mvm->fw_error_dump_wk);
1017
1018 mutex_lock(&mvm->mutex);
1019 __iwl_mvm_mac_stop(mvm);
1020 mutex_unlock(&mvm->mutex);
1021
1022 /*
1023 * The worker might have been waiting for the mutex, let it run and
1024 * discover that its list is now empty.
1025 */
1026 cancel_work_sync(&mvm->async_handlers_wk);
1027 }
1028
1029 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1030 {
1031 u16 i;
1032
1033 lockdep_assert_held(&mvm->mutex);
1034
1035 for (i = 0; i < NUM_PHY_CTX; i++)
1036 if (!mvm->phy_ctxts[i].ref)
1037 return &mvm->phy_ctxts[i];
1038
1039 IWL_ERR(mvm, "No available PHY context\n");
1040 return NULL;
1041 }
1042
1043 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1044 s8 tx_power)
1045 {
1046 /* FW is in charge of regulatory enforcement */
1047 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1048 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1049 .pwr_restriction = cpu_to_le16(tx_power),
1050 };
1051
1052 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1053 sizeof(reduce_txpwr_cmd),
1054 &reduce_txpwr_cmd);
1055 }
1056
1057 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1058 struct ieee80211_vif *vif)
1059 {
1060 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1061 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1062 int ret;
1063
1064 /*
1065 * make sure D0i3 exit is completed, otherwise a target access
1066 * during tx queue configuration could be done when still in
1067 * D0i3 state.
1068 */
1069 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1070 if (ret)
1071 return ret;
1072
1073 /*
1074 * Not much to do here. The stack will not allow interface
1075 * types or combinations that we didn't advertise, so we
1076 * don't really have to check the types.
1077 */
1078
1079 mutex_lock(&mvm->mutex);
1080
1081 /* Allocate resources for the MAC context, and add it to the fw */
1082 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1083 if (ret)
1084 goto out_unlock;
1085
1086 /* Counting number of interfaces is needed for legacy PM */
1087 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1088 mvm->vif_count++;
1089
1090 /*
1091 * The AP binding flow can be done only after the beacon
1092 * template is configured (which happens only in the mac80211
1093 * start_ap() flow), and adding the broadcast station can happen
1094 * only after the binding.
1095 * In addition, since modifying the MAC before adding a bcast
1096 * station is not allowed by the FW, delay the adding of MAC context to
1097 * the point where we can also add the bcast station.
1098 * In short: there's not much we can do at this point, other than
1099 * allocating resources :)
1100 */
1101 if (vif->type == NL80211_IFTYPE_AP ||
1102 vif->type == NL80211_IFTYPE_ADHOC) {
1103 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1104 if (ret) {
1105 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1106 goto out_release;
1107 }
1108
1109 iwl_mvm_vif_dbgfs_register(mvm, vif);
1110 goto out_unlock;
1111 }
1112
1113 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1114 if (ret)
1115 goto out_release;
1116
1117 ret = iwl_mvm_power_update_mac(mvm);
1118 if (ret)
1119 goto out_release;
1120
1121 /* beacon filtering */
1122 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1123 if (ret)
1124 goto out_remove_mac;
1125
1126 if (!mvm->bf_allowed_vif &&
1127 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1128 mvm->bf_allowed_vif = mvmvif;
1129 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1130 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1131 }
1132
1133 /*
1134 * P2P_DEVICE interface does not have a channel context assigned to it,
1135 * so a dedicated PHY context is allocated to it and the corresponding
1136 * MAC context is bound to it at this stage.
1137 */
1138 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1139
1140 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1141 if (!mvmvif->phy_ctxt) {
1142 ret = -ENOSPC;
1143 goto out_free_bf;
1144 }
1145
1146 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1147 ret = iwl_mvm_binding_add_vif(mvm, vif);
1148 if (ret)
1149 goto out_unref_phy;
1150
1151 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1152 if (ret)
1153 goto out_unbind;
1154
1155 /* Save a pointer to p2p device vif, so it can later be used to
1156 * update the p2p device MAC when a GO is started/stopped */
1157 mvm->p2p_device_vif = vif;
1158 }
1159
1160 iwl_mvm_vif_dbgfs_register(mvm, vif);
1161 goto out_unlock;
1162
1163 out_unbind:
1164 iwl_mvm_binding_remove_vif(mvm, vif);
1165 out_unref_phy:
1166 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1167 out_free_bf:
1168 if (mvm->bf_allowed_vif == mvmvif) {
1169 mvm->bf_allowed_vif = NULL;
1170 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1171 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1172 }
1173 out_remove_mac:
1174 mvmvif->phy_ctxt = NULL;
1175 iwl_mvm_mac_ctxt_remove(mvm, vif);
1176 out_release:
1177 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1178 mvm->vif_count--;
1179
1180 iwl_mvm_mac_ctxt_release(mvm, vif);
1181 out_unlock:
1182 mutex_unlock(&mvm->mutex);
1183
1184 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1185
1186 return ret;
1187 }
1188
1189 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1190 struct ieee80211_vif *vif)
1191 {
1192 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1193
1194 if (tfd_msk) {
1195 mutex_lock(&mvm->mutex);
1196 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1197 mutex_unlock(&mvm->mutex);
1198 }
1199
1200 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1201 /*
1202 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1203 * We assume here that all the packets sent to the OFFCHANNEL
1204 * queue are sent in ROC session.
1205 */
1206 flush_work(&mvm->roc_done_wk);
1207 } else {
1208 /*
1209 * By now, all the AC queues are empty. The AGG queues are
1210 * empty too. We already got all the Tx responses for all the
1211 * packets in the queues. The drain work can have been
1212 * triggered. Flush it.
1213 */
1214 flush_work(&mvm->sta_drained_wk);
1215 }
1216 }
1217
1218 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1219 struct ieee80211_vif *vif)
1220 {
1221 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1222 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1223
1224 iwl_mvm_prepare_mac_removal(mvm, vif);
1225
1226 mutex_lock(&mvm->mutex);
1227
1228 if (mvm->bf_allowed_vif == mvmvif) {
1229 mvm->bf_allowed_vif = NULL;
1230 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1231 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1232 }
1233
1234 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1235
1236 /*
1237 * For AP/GO interface, the tear down of the resources allocated to the
1238 * interface is be handled as part of the stop_ap flow.
1239 */
1240 if (vif->type == NL80211_IFTYPE_AP ||
1241 vif->type == NL80211_IFTYPE_ADHOC) {
1242 #ifdef CONFIG_NL80211_TESTMODE
1243 if (vif == mvm->noa_vif) {
1244 mvm->noa_vif = NULL;
1245 mvm->noa_duration = 0;
1246 }
1247 #endif
1248 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1249 goto out_release;
1250 }
1251
1252 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1253 mvm->p2p_device_vif = NULL;
1254 iwl_mvm_rm_bcast_sta(mvm, vif);
1255 iwl_mvm_binding_remove_vif(mvm, vif);
1256 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1257 mvmvif->phy_ctxt = NULL;
1258 }
1259
1260 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1261 mvm->vif_count--;
1262
1263 iwl_mvm_power_update_mac(mvm);
1264 iwl_mvm_mac_ctxt_remove(mvm, vif);
1265
1266 out_release:
1267 iwl_mvm_mac_ctxt_release(mvm, vif);
1268 mutex_unlock(&mvm->mutex);
1269 }
1270
1271 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1272 {
1273 return 0;
1274 }
1275
1276 struct iwl_mvm_mc_iter_data {
1277 struct iwl_mvm *mvm;
1278 int port_id;
1279 };
1280
1281 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1282 struct ieee80211_vif *vif)
1283 {
1284 struct iwl_mvm_mc_iter_data *data = _data;
1285 struct iwl_mvm *mvm = data->mvm;
1286 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1287 int ret, len;
1288
1289 /* if we don't have free ports, mcast frames will be dropped */
1290 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1291 return;
1292
1293 if (vif->type != NL80211_IFTYPE_STATION ||
1294 !vif->bss_conf.assoc)
1295 return;
1296
1297 cmd->port_id = data->port_id++;
1298 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1299 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1300
1301 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1302 if (ret)
1303 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1304 }
1305
1306 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1307 {
1308 struct iwl_mvm_mc_iter_data iter_data = {
1309 .mvm = mvm,
1310 };
1311
1312 lockdep_assert_held(&mvm->mutex);
1313
1314 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1315 return;
1316
1317 ieee80211_iterate_active_interfaces_atomic(
1318 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1319 iwl_mvm_mc_iface_iterator, &iter_data);
1320 }
1321
1322 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1323 struct netdev_hw_addr_list *mc_list)
1324 {
1325 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1326 struct iwl_mcast_filter_cmd *cmd;
1327 struct netdev_hw_addr *addr;
1328 int addr_count;
1329 bool pass_all;
1330 int len;
1331
1332 addr_count = netdev_hw_addr_list_count(mc_list);
1333 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1334 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1335 if (pass_all)
1336 addr_count = 0;
1337
1338 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1339 cmd = kzalloc(len, GFP_ATOMIC);
1340 if (!cmd)
1341 return 0;
1342
1343 if (pass_all) {
1344 cmd->pass_all = 1;
1345 return (u64)(unsigned long)cmd;
1346 }
1347
1348 netdev_hw_addr_list_for_each(addr, mc_list) {
1349 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1350 cmd->count, addr->addr);
1351 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1352 addr->addr, ETH_ALEN);
1353 cmd->count++;
1354 }
1355
1356 return (u64)(unsigned long)cmd;
1357 }
1358
1359 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1360 unsigned int changed_flags,
1361 unsigned int *total_flags,
1362 u64 multicast)
1363 {
1364 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1365 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1366
1367 mutex_lock(&mvm->mutex);
1368
1369 /* replace previous configuration */
1370 kfree(mvm->mcast_filter_cmd);
1371 mvm->mcast_filter_cmd = cmd;
1372
1373 if (!cmd)
1374 goto out;
1375
1376 iwl_mvm_recalc_multicast(mvm);
1377 out:
1378 mutex_unlock(&mvm->mutex);
1379 *total_flags = 0;
1380 }
1381
1382 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1383 struct iwl_bcast_iter_data {
1384 struct iwl_mvm *mvm;
1385 struct iwl_bcast_filter_cmd *cmd;
1386 u8 current_filter;
1387 };
1388
1389 static void
1390 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1391 const struct iwl_fw_bcast_filter *in_filter,
1392 struct iwl_fw_bcast_filter *out_filter)
1393 {
1394 struct iwl_fw_bcast_filter_attr *attr;
1395 int i;
1396
1397 memcpy(out_filter, in_filter, sizeof(*out_filter));
1398
1399 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1400 attr = &out_filter->attrs[i];
1401
1402 if (!attr->mask)
1403 break;
1404
1405 switch (attr->reserved1) {
1406 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1407 if (vif->bss_conf.arp_addr_cnt != 1) {
1408 attr->mask = 0;
1409 continue;
1410 }
1411
1412 attr->val = vif->bss_conf.arp_addr_list[0];
1413 break;
1414 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1415 attr->val = *(__be32 *)&vif->addr[2];
1416 break;
1417 default:
1418 break;
1419 }
1420 attr->reserved1 = 0;
1421 out_filter->num_attrs++;
1422 }
1423 }
1424
1425 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1426 struct ieee80211_vif *vif)
1427 {
1428 struct iwl_bcast_iter_data *data = _data;
1429 struct iwl_mvm *mvm = data->mvm;
1430 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1431 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1432 struct iwl_fw_bcast_mac *bcast_mac;
1433 int i;
1434
1435 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1436 return;
1437
1438 bcast_mac = &cmd->macs[mvmvif->id];
1439
1440 /*
1441 * enable filtering only for associated stations, but not for P2P
1442 * Clients
1443 */
1444 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1445 !vif->bss_conf.assoc)
1446 return;
1447
1448 bcast_mac->default_discard = 1;
1449
1450 /* copy all configured filters */
1451 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1452 /*
1453 * Make sure we don't exceed our filters limit.
1454 * if there is still a valid filter to be configured,
1455 * be on the safe side and just allow bcast for this mac.
1456 */
1457 if (WARN_ON_ONCE(data->current_filter >=
1458 ARRAY_SIZE(cmd->filters))) {
1459 bcast_mac->default_discard = 0;
1460 bcast_mac->attached_filters = 0;
1461 break;
1462 }
1463
1464 iwl_mvm_set_bcast_filter(vif,
1465 &mvm->bcast_filters[i],
1466 &cmd->filters[data->current_filter]);
1467
1468 /* skip current filter if it contains no attributes */
1469 if (!cmd->filters[data->current_filter].num_attrs)
1470 continue;
1471
1472 /* attach the filter to current mac */
1473 bcast_mac->attached_filters |=
1474 cpu_to_le16(BIT(data->current_filter));
1475
1476 data->current_filter++;
1477 }
1478 }
1479
1480 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1481 struct iwl_bcast_filter_cmd *cmd)
1482 {
1483 struct iwl_bcast_iter_data iter_data = {
1484 .mvm = mvm,
1485 .cmd = cmd,
1486 };
1487
1488 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1489 return false;
1490
1491 memset(cmd, 0, sizeof(*cmd));
1492 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1493 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1494
1495 #ifdef CONFIG_IWLWIFI_DEBUGFS
1496 /* use debugfs filters/macs if override is configured */
1497 if (mvm->dbgfs_bcast_filtering.override) {
1498 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1499 sizeof(cmd->filters));
1500 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1501 sizeof(cmd->macs));
1502 return true;
1503 }
1504 #endif
1505
1506 /* if no filters are configured, do nothing */
1507 if (!mvm->bcast_filters)
1508 return false;
1509
1510 /* configure and attach these filters for each associated sta vif */
1511 ieee80211_iterate_active_interfaces(
1512 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1513 iwl_mvm_bcast_filter_iterator, &iter_data);
1514
1515 return true;
1516 }
1517 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1518 struct ieee80211_vif *vif)
1519 {
1520 struct iwl_bcast_filter_cmd cmd;
1521
1522 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1523 return 0;
1524
1525 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1526 return 0;
1527
1528 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1529 sizeof(cmd), &cmd);
1530 }
1531 #else
1532 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1533 struct ieee80211_vif *vif)
1534 {
1535 return 0;
1536 }
1537 #endif
1538
1539 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1540 struct ieee80211_vif *vif,
1541 struct ieee80211_bss_conf *bss_conf,
1542 u32 changes)
1543 {
1544 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1545 int ret;
1546
1547 /*
1548 * Re-calculate the tsf id, as the master-slave relations depend on the
1549 * beacon interval, which was not known when the station interface was
1550 * added.
1551 */
1552 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1553 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1554
1555 /*
1556 * If we're not associated yet, take the (new) BSSID before associating
1557 * so the firmware knows. If we're already associated, then use the old
1558 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1559 * branch for disassociation below.
1560 */
1561 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1562 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1563
1564 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1565 if (ret)
1566 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1567
1568 /* after sending it once, adopt mac80211 data */
1569 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1570 mvmvif->associated = bss_conf->assoc;
1571
1572 if (changes & BSS_CHANGED_ASSOC) {
1573 if (bss_conf->assoc) {
1574 /* add quota for this interface */
1575 ret = iwl_mvm_update_quotas(mvm, NULL);
1576 if (ret) {
1577 IWL_ERR(mvm, "failed to update quotas\n");
1578 return;
1579 }
1580
1581 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1582 &mvm->status)) {
1583 /*
1584 * If we're restarting then the firmware will
1585 * obviously have lost synchronisation with
1586 * the AP. It will attempt to synchronise by
1587 * itself, but we can make it more reliable by
1588 * scheduling a session protection time event.
1589 *
1590 * The firmware needs to receive a beacon to
1591 * catch up with synchronisation, use 110% of
1592 * the beacon interval.
1593 *
1594 * Set a large maximum delay to allow for more
1595 * than a single interface.
1596 */
1597 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1598 iwl_mvm_protect_session(mvm, vif, dur, dur,
1599 5 * dur, false);
1600 }
1601
1602 iwl_mvm_sf_update(mvm, vif, false);
1603 iwl_mvm_power_vif_assoc(mvm, vif);
1604 if (vif->p2p) {
1605 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1606 iwl_mvm_update_smps(mvm, vif,
1607 IWL_MVM_SMPS_REQ_PROT,
1608 IEEE80211_SMPS_DYNAMIC);
1609 }
1610 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1611 /*
1612 * If update fails - SF might be running in associated
1613 * mode while disassociated - which is forbidden.
1614 */
1615 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1616 "Failed to update SF upon disassociation\n");
1617
1618 /* remove AP station now that the MAC is unassoc */
1619 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1620 if (ret)
1621 IWL_ERR(mvm, "failed to remove AP station\n");
1622
1623 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1624 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1625 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1626 /* remove quota for this interface */
1627 ret = iwl_mvm_update_quotas(mvm, NULL);
1628 if (ret)
1629 IWL_ERR(mvm, "failed to update quotas\n");
1630
1631 if (vif->p2p)
1632 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1633
1634 /* this will take the cleared BSSID from bss_conf */
1635 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1636 if (ret)
1637 IWL_ERR(mvm,
1638 "failed to update MAC %pM (clear after unassoc)\n",
1639 vif->addr);
1640 }
1641
1642 iwl_mvm_recalc_multicast(mvm);
1643 iwl_mvm_configure_bcast_filter(mvm, vif);
1644
1645 /* reset rssi values */
1646 mvmvif->bf_data.ave_beacon_signal = 0;
1647
1648 iwl_mvm_bt_coex_vif_change(mvm);
1649 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1650 IEEE80211_SMPS_AUTOMATIC);
1651 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1652 /*
1653 * We received a beacon _after_ association so
1654 * remove the session protection.
1655 */
1656 iwl_mvm_remove_time_event(mvm, mvmvif,
1657 &mvmvif->time_event_data);
1658 }
1659
1660 if (changes & BSS_CHANGED_BEACON_INFO) {
1661 iwl_mvm_sf_update(mvm, vif, false);
1662 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1663 }
1664
1665 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1666 ret = iwl_mvm_power_update_mac(mvm);
1667 if (ret)
1668 IWL_ERR(mvm, "failed to update power mode\n");
1669 }
1670
1671 if (changes & BSS_CHANGED_TXPOWER) {
1672 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1673 bss_conf->txpower);
1674 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1675 }
1676
1677 if (changes & BSS_CHANGED_CQM) {
1678 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1679 /* reset cqm events tracking */
1680 mvmvif->bf_data.last_cqm_event = 0;
1681 if (mvmvif->bf_data.bf_enabled) {
1682 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1683 if (ret)
1684 IWL_ERR(mvm,
1685 "failed to update CQM thresholds\n");
1686 }
1687 }
1688
1689 if (changes & BSS_CHANGED_ARP_FILTER) {
1690 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1691 iwl_mvm_configure_bcast_filter(mvm, vif);
1692 }
1693 }
1694
1695 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1696 struct ieee80211_vif *vif)
1697 {
1698 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1699 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1700 int ret;
1701
1702 /*
1703 * iwl_mvm_mac_ctxt_add() might read directly from the device
1704 * (the system time), so make sure it is available.
1705 */
1706 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1707 if (ret)
1708 return ret;
1709
1710 mutex_lock(&mvm->mutex);
1711
1712 /* Send the beacon template */
1713 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1714 if (ret)
1715 goto out_unlock;
1716
1717 /*
1718 * Re-calculate the tsf id, as the master-slave relations depend on the
1719 * beacon interval, which was not known when the AP interface was added.
1720 */
1721 if (vif->type == NL80211_IFTYPE_AP)
1722 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1723
1724 /* Add the mac context */
1725 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1726 if (ret)
1727 goto out_unlock;
1728
1729 /* Perform the binding */
1730 ret = iwl_mvm_binding_add_vif(mvm, vif);
1731 if (ret)
1732 goto out_remove;
1733
1734 /* Send the bcast station. At this stage the TBTT and DTIM time events
1735 * are added and applied to the scheduler */
1736 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1737 if (ret)
1738 goto out_unbind;
1739
1740 /* must be set before quota calculations */
1741 mvmvif->ap_ibss_active = true;
1742
1743 /* power updated needs to be done before quotas */
1744 iwl_mvm_power_update_mac(mvm);
1745
1746 ret = iwl_mvm_update_quotas(mvm, NULL);
1747 if (ret)
1748 goto out_quota_failed;
1749
1750 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1751 if (vif->p2p && mvm->p2p_device_vif)
1752 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1753
1754 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1755
1756 iwl_mvm_bt_coex_vif_change(mvm);
1757
1758 /* we don't support TDLS during DCM */
1759 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1760 iwl_mvm_teardown_tdls_peers(mvm);
1761
1762 mutex_unlock(&mvm->mutex);
1763 return 0;
1764
1765 out_quota_failed:
1766 iwl_mvm_power_update_mac(mvm);
1767 mvmvif->ap_ibss_active = false;
1768 iwl_mvm_send_rm_bcast_sta(mvm, vif);
1769 out_unbind:
1770 iwl_mvm_binding_remove_vif(mvm, vif);
1771 out_remove:
1772 iwl_mvm_mac_ctxt_remove(mvm, vif);
1773 out_unlock:
1774 mutex_unlock(&mvm->mutex);
1775 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
1776 return ret;
1777 }
1778
1779 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1780 struct ieee80211_vif *vif)
1781 {
1782 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1783 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1784
1785 iwl_mvm_prepare_mac_removal(mvm, vif);
1786
1787 mutex_lock(&mvm->mutex);
1788
1789 /* Handle AP stop while in CSA */
1790 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1791 iwl_mvm_remove_time_event(mvm, mvmvif,
1792 &mvmvif->time_event_data);
1793 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1794 }
1795
1796 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1797 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1798 mvm->csa_tx_block_bcn_timeout = 0;
1799 }
1800
1801 mvmvif->ap_ibss_active = false;
1802 mvm->ap_last_beacon_gp2 = 0;
1803
1804 iwl_mvm_bt_coex_vif_change(mvm);
1805
1806 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1807
1808 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1809 if (vif->p2p && mvm->p2p_device_vif)
1810 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1811
1812 iwl_mvm_update_quotas(mvm, NULL);
1813 iwl_mvm_send_rm_bcast_sta(mvm, vif);
1814 iwl_mvm_binding_remove_vif(mvm, vif);
1815
1816 iwl_mvm_power_update_mac(mvm);
1817
1818 iwl_mvm_mac_ctxt_remove(mvm, vif);
1819
1820 mutex_unlock(&mvm->mutex);
1821 }
1822
1823 static void
1824 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1825 struct ieee80211_vif *vif,
1826 struct ieee80211_bss_conf *bss_conf,
1827 u32 changes)
1828 {
1829 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1830
1831 /* Changes will be applied when the AP/IBSS is started */
1832 if (!mvmvif->ap_ibss_active)
1833 return;
1834
1835 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1836 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
1837 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
1838 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1839
1840 /* Need to send a new beacon template to the FW */
1841 if (changes & BSS_CHANGED_BEACON &&
1842 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1843 IWL_WARN(mvm, "Failed updating beacon data\n");
1844
1845 if (changes & BSS_CHANGED_TXPOWER) {
1846 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1847 bss_conf->txpower);
1848 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1849 }
1850
1851 }
1852
1853 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1854 struct ieee80211_vif *vif,
1855 struct ieee80211_bss_conf *bss_conf,
1856 u32 changes)
1857 {
1858 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1859
1860 /*
1861 * iwl_mvm_bss_info_changed_station() might call
1862 * iwl_mvm_protect_session(), which reads directly from
1863 * the device (the system time), so make sure it is available.
1864 */
1865 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1866 return;
1867
1868 mutex_lock(&mvm->mutex);
1869
1870 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
1871 iwl_mvm_scan_offload_stop(mvm, true);
1872
1873 switch (vif->type) {
1874 case NL80211_IFTYPE_STATION:
1875 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1876 break;
1877 case NL80211_IFTYPE_AP:
1878 case NL80211_IFTYPE_ADHOC:
1879 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1880 break;
1881 default:
1882 /* shouldn't happen */
1883 WARN_ON_ONCE(1);
1884 }
1885
1886 mutex_unlock(&mvm->mutex);
1887 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
1888 }
1889
1890 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1891 enum iwl_scan_status scan_type)
1892 {
1893 int ret;
1894 bool wait_for_handlers = false;
1895
1896 mutex_lock(&mvm->mutex);
1897
1898 if (mvm->scan_status != scan_type) {
1899 ret = 0;
1900 /* make sure there are no pending notifications */
1901 wait_for_handlers = true;
1902 goto out;
1903 }
1904
1905 switch (scan_type) {
1906 case IWL_MVM_SCAN_SCHED:
1907 ret = iwl_mvm_scan_offload_stop(mvm, true);
1908 break;
1909 case IWL_MVM_SCAN_OS:
1910 ret = iwl_mvm_cancel_scan(mvm);
1911 break;
1912 case IWL_MVM_SCAN_NONE:
1913 default:
1914 WARN_ON_ONCE(1);
1915 ret = -EINVAL;
1916 break;
1917 }
1918 if (ret)
1919 goto out;
1920
1921 wait_for_handlers = true;
1922 out:
1923 mutex_unlock(&mvm->mutex);
1924
1925 /* make sure we consume the completion notification */
1926 if (wait_for_handlers)
1927 iwl_mvm_wait_for_async_handlers(mvm);
1928
1929 return ret;
1930 }
1931 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1932 struct ieee80211_vif *vif,
1933 struct ieee80211_scan_request *hw_req)
1934 {
1935 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1936 struct cfg80211_scan_request *req = &hw_req->req;
1937 int ret;
1938
1939 if (req->n_channels == 0 ||
1940 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1941 return -EINVAL;
1942
1943 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1944 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1945 if (ret)
1946 return ret;
1947 }
1948
1949 mutex_lock(&mvm->mutex);
1950
1951 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1952 ret = -EBUSY;
1953 goto out;
1954 }
1955
1956 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1957
1958 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
1959 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
1960 else if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1961 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1962 else
1963 ret = iwl_mvm_scan_request(mvm, vif, req);
1964
1965 if (ret)
1966 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1967 out:
1968 mutex_unlock(&mvm->mutex);
1969 return ret;
1970 }
1971
1972 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1973 struct ieee80211_vif *vif)
1974 {
1975 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1976
1977 mutex_lock(&mvm->mutex);
1978
1979 iwl_mvm_cancel_scan(mvm);
1980
1981 mutex_unlock(&mvm->mutex);
1982 }
1983
1984 static void
1985 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1986 struct ieee80211_sta *sta, u16 tids,
1987 int num_frames,
1988 enum ieee80211_frame_release_type reason,
1989 bool more_data)
1990 {
1991 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1992
1993 /* Called when we need to transmit (a) frame(s) from mac80211 */
1994
1995 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1996 tids, more_data, false);
1997 }
1998
1999 static void
2000 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2001 struct ieee80211_sta *sta, u16 tids,
2002 int num_frames,
2003 enum ieee80211_frame_release_type reason,
2004 bool more_data)
2005 {
2006 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2007
2008 /* Called when we need to transmit (a) frame(s) from agg queue */
2009
2010 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2011 tids, more_data, true);
2012 }
2013
2014 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2015 struct ieee80211_vif *vif,
2016 enum sta_notify_cmd cmd,
2017 struct ieee80211_sta *sta)
2018 {
2019 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2020 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2021 int tid;
2022
2023 switch (cmd) {
2024 case STA_NOTIFY_SLEEP:
2025 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2026 ieee80211_sta_block_awake(hw, sta, true);
2027 spin_lock_bh(&mvmsta->lock);
2028 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2029 struct iwl_mvm_tid_data *tid_data;
2030
2031 tid_data = &mvmsta->tid_data[tid];
2032 if (tid_data->state != IWL_AGG_ON &&
2033 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2034 continue;
2035 if (iwl_mvm_tid_queued(tid_data) == 0)
2036 continue;
2037 ieee80211_sta_set_buffered(sta, tid, true);
2038 }
2039 spin_unlock_bh(&mvmsta->lock);
2040 /*
2041 * The fw updates the STA to be asleep. Tx packets on the Tx
2042 * queues to this station will not be transmitted. The fw will
2043 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2044 */
2045 break;
2046 case STA_NOTIFY_AWAKE:
2047 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2048 break;
2049 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2050 break;
2051 default:
2052 break;
2053 }
2054 }
2055
2056 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2057 struct ieee80211_vif *vif,
2058 struct ieee80211_sta *sta)
2059 {
2060 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2061 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2062
2063 /*
2064 * This is called before mac80211 does RCU synchronisation,
2065 * so here we already invalidate our internal RCU-protected
2066 * station pointer. The rest of the code will thus no longer
2067 * be able to find the station this way, and we don't rely
2068 * on further RCU synchronisation after the sta_state()
2069 * callback deleted the station.
2070 */
2071 mutex_lock(&mvm->mutex);
2072 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2073 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2074 ERR_PTR(-ENOENT));
2075 mutex_unlock(&mvm->mutex);
2076 }
2077
2078 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2079 struct ieee80211_vif *vif,
2080 struct ieee80211_sta *sta,
2081 enum ieee80211_sta_state old_state,
2082 enum ieee80211_sta_state new_state)
2083 {
2084 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2085 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2086 int ret;
2087
2088 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2089 sta->addr, old_state, new_state);
2090
2091 /* this would be a mac80211 bug ... but don't crash */
2092 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2093 return -EINVAL;
2094
2095 /* if a STA is being removed, reuse its ID */
2096 flush_work(&mvm->sta_drained_wk);
2097
2098 mutex_lock(&mvm->mutex);
2099 if (old_state == IEEE80211_STA_NOTEXIST &&
2100 new_state == IEEE80211_STA_NONE) {
2101 /*
2102 * Firmware bug - it'll crash if the beacon interval is less
2103 * than 16. We can't avoid connecting at all, so refuse the
2104 * station state change, this will cause mac80211 to abandon
2105 * attempts to connect to this AP, and eventually wpa_s will
2106 * blacklist the AP...
2107 */
2108 if (vif->type == NL80211_IFTYPE_STATION &&
2109 vif->bss_conf.beacon_int < 16) {
2110 IWL_ERR(mvm,
2111 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2112 sta->addr, vif->bss_conf.beacon_int);
2113 ret = -EINVAL;
2114 goto out_unlock;
2115 }
2116
2117 if (sta->tdls &&
2118 (vif->p2p ||
2119 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2120 IWL_MVM_TDLS_STA_COUNT ||
2121 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2122 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2123 ret = -EBUSY;
2124 goto out_unlock;
2125 }
2126
2127 ret = iwl_mvm_add_sta(mvm, vif, sta);
2128 if (sta->tdls && ret == 0)
2129 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2130 } else if (old_state == IEEE80211_STA_NONE &&
2131 new_state == IEEE80211_STA_AUTH) {
2132 /*
2133 * EBS may be disabled due to previous failures reported by FW.
2134 * Reset EBS status here assuming environment has been changed.
2135 */
2136 mvm->last_ebs_successful = true;
2137 ret = 0;
2138 } else if (old_state == IEEE80211_STA_AUTH &&
2139 new_state == IEEE80211_STA_ASSOC) {
2140 ret = iwl_mvm_update_sta(mvm, vif, sta);
2141 if (ret == 0)
2142 iwl_mvm_rs_rate_init(mvm, sta,
2143 mvmvif->phy_ctxt->channel->band,
2144 true);
2145 } else if (old_state == IEEE80211_STA_ASSOC &&
2146 new_state == IEEE80211_STA_AUTHORIZED) {
2147
2148 /* we don't support TDLS during DCM */
2149 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2150 iwl_mvm_teardown_tdls_peers(mvm);
2151
2152 /* enable beacon filtering */
2153 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2154 ret = 0;
2155 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2156 new_state == IEEE80211_STA_ASSOC) {
2157 /* disable beacon filtering */
2158 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2159 ret = 0;
2160 } else if (old_state == IEEE80211_STA_ASSOC &&
2161 new_state == IEEE80211_STA_AUTH) {
2162 ret = 0;
2163 } else if (old_state == IEEE80211_STA_AUTH &&
2164 new_state == IEEE80211_STA_NONE) {
2165 ret = 0;
2166 } else if (old_state == IEEE80211_STA_NONE &&
2167 new_state == IEEE80211_STA_NOTEXIST) {
2168 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2169 if (sta->tdls)
2170 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2171 } else {
2172 ret = -EIO;
2173 }
2174 out_unlock:
2175 mutex_unlock(&mvm->mutex);
2176
2177 return ret;
2178 }
2179
2180 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2181 {
2182 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2183
2184 mvm->rts_threshold = value;
2185
2186 return 0;
2187 }
2188
2189 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2190 struct ieee80211_vif *vif,
2191 struct ieee80211_sta *sta, u32 changed)
2192 {
2193 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2194
2195 if (vif->type == NL80211_IFTYPE_STATION &&
2196 changed & IEEE80211_RC_NSS_CHANGED)
2197 iwl_mvm_sf_update(mvm, vif, false);
2198 }
2199
2200 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2201 struct ieee80211_vif *vif, u16 ac,
2202 const struct ieee80211_tx_queue_params *params)
2203 {
2204 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2205 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2206
2207 mvmvif->queue_params[ac] = *params;
2208
2209 /*
2210 * No need to update right away, we'll get BSS_CHANGED_QOS
2211 * The exception is P2P_DEVICE interface which needs immediate update.
2212 */
2213 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2214 int ret;
2215
2216 mutex_lock(&mvm->mutex);
2217 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2218 mutex_unlock(&mvm->mutex);
2219 return ret;
2220 }
2221 return 0;
2222 }
2223
2224 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2225 struct ieee80211_vif *vif)
2226 {
2227 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2228 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2229 200 + vif->bss_conf.beacon_int);
2230 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2231 100 + vif->bss_conf.beacon_int);
2232
2233 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2234 return;
2235
2236 /*
2237 * iwl_mvm_protect_session() reads directly from the device
2238 * (the system time), so make sure it is available.
2239 */
2240 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2241 return;
2242
2243 mutex_lock(&mvm->mutex);
2244 /* Try really hard to protect the session and hear a beacon */
2245 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2246 mutex_unlock(&mvm->mutex);
2247
2248 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2249 }
2250
2251 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2252 struct ieee80211_vif *vif,
2253 struct cfg80211_sched_scan_request *req,
2254 struct ieee80211_scan_ies *ies)
2255 {
2256 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2257 int ret;
2258
2259 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2260 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2261 if (ret)
2262 return ret;
2263 }
2264
2265 mutex_lock(&mvm->mutex);
2266
2267 /* Newest FW fixes sched scan while connected on another interface */
2268 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2269 if (!vif->bss_conf.idle) {
2270 ret = -EBUSY;
2271 goto out;
2272 }
2273 } else if (!iwl_mvm_is_idle(mvm)) {
2274 ret = -EBUSY;
2275 goto out;
2276 }
2277
2278 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2279 ret = -EBUSY;
2280 goto out;
2281 }
2282
2283 ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
2284 if (ret)
2285 mvm->scan_status = IWL_MVM_SCAN_NONE;
2286
2287 out:
2288 mutex_unlock(&mvm->mutex);
2289 return ret;
2290 }
2291
2292 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2293 struct ieee80211_vif *vif)
2294 {
2295 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2296 int ret;
2297
2298 mutex_lock(&mvm->mutex);
2299 ret = iwl_mvm_scan_offload_stop(mvm, false);
2300 mutex_unlock(&mvm->mutex);
2301 iwl_mvm_wait_for_async_handlers(mvm);
2302
2303 return ret;
2304
2305 }
2306
2307 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2308 enum set_key_cmd cmd,
2309 struct ieee80211_vif *vif,
2310 struct ieee80211_sta *sta,
2311 struct ieee80211_key_conf *key)
2312 {
2313 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2314 int ret;
2315
2316 if (iwlwifi_mod_params.sw_crypto) {
2317 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2318 return -EOPNOTSUPP;
2319 }
2320
2321 switch (key->cipher) {
2322 case WLAN_CIPHER_SUITE_TKIP:
2323 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2324 /* fall-through */
2325 case WLAN_CIPHER_SUITE_CCMP:
2326 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2327 break;
2328 case WLAN_CIPHER_SUITE_AES_CMAC:
2329 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2330 break;
2331 case WLAN_CIPHER_SUITE_WEP40:
2332 case WLAN_CIPHER_SUITE_WEP104:
2333 /*
2334 * Support for TX only, at least for now, so accept
2335 * the key and do nothing else. Then mac80211 will
2336 * pass it for TX but we don't have to use it for RX.
2337 */
2338 return 0;
2339 default:
2340 /* currently FW supports only one optional cipher scheme */
2341 if (hw->n_cipher_schemes &&
2342 hw->cipher_schemes->cipher == key->cipher)
2343 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2344 else
2345 return -EOPNOTSUPP;
2346 }
2347
2348 mutex_lock(&mvm->mutex);
2349
2350 switch (cmd) {
2351 case SET_KEY:
2352 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2353 vif->type == NL80211_IFTYPE_AP) && !sta) {
2354 /*
2355 * GTK on AP interface is a TX-only key, return 0;
2356 * on IBSS they're per-station and because we're lazy
2357 * we don't support them for RX, so do the same.
2358 */
2359 ret = 0;
2360 key->hw_key_idx = STA_KEY_IDX_INVALID;
2361 break;
2362 }
2363
2364 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2365 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2366 if (ret) {
2367 IWL_WARN(mvm, "set key failed\n");
2368 /*
2369 * can't add key for RX, but we don't need it
2370 * in the device for TX so still return 0
2371 */
2372 key->hw_key_idx = STA_KEY_IDX_INVALID;
2373 ret = 0;
2374 }
2375
2376 break;
2377 case DISABLE_KEY:
2378 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2379 ret = 0;
2380 break;
2381 }
2382
2383 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2384 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2385 break;
2386 default:
2387 ret = -EINVAL;
2388 }
2389
2390 mutex_unlock(&mvm->mutex);
2391 return ret;
2392 }
2393
2394 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2395 struct ieee80211_vif *vif,
2396 struct ieee80211_key_conf *keyconf,
2397 struct ieee80211_sta *sta,
2398 u32 iv32, u16 *phase1key)
2399 {
2400 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2401
2402 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2403 return;
2404
2405 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2406 }
2407
2408
2409 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2410 struct iwl_rx_packet *pkt, void *data)
2411 {
2412 struct iwl_mvm *mvm =
2413 container_of(notif_wait, struct iwl_mvm, notif_wait);
2414 struct iwl_hs20_roc_res *resp;
2415 int resp_len = iwl_rx_packet_payload_len(pkt);
2416 struct iwl_mvm_time_event_data *te_data = data;
2417
2418 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2419 return true;
2420
2421 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2422 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2423 return true;
2424 }
2425
2426 resp = (void *)pkt->data;
2427
2428 IWL_DEBUG_TE(mvm,
2429 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2430 resp->status, resp->event_unique_id);
2431
2432 te_data->uid = le32_to_cpu(resp->event_unique_id);
2433 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2434 te_data->uid);
2435
2436 spin_lock_bh(&mvm->time_event_lock);
2437 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2438 spin_unlock_bh(&mvm->time_event_lock);
2439
2440 return true;
2441 }
2442
2443 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2444 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2445 struct ieee80211_channel *channel,
2446 struct ieee80211_vif *vif,
2447 int duration)
2448 {
2449 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2450 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2451 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2452 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2453 struct iwl_notification_wait wait_time_event;
2454 struct iwl_hs20_roc_req aux_roc_req = {
2455 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2456 .id_and_color =
2457 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2458 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2459 /* Set the channel info data */
2460 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2461 PHY_BAND_24 : PHY_BAND_5,
2462 .channel_info.channel = channel->hw_value,
2463 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2464 /* Set the time and duration */
2465 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2466 .apply_time_max_delay =
2467 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2468 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2469 };
2470
2471 /* Set the node address */
2472 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2473
2474 lockdep_assert_held(&mvm->mutex);
2475
2476 spin_lock_bh(&mvm->time_event_lock);
2477
2478 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2479 spin_unlock_bh(&mvm->time_event_lock);
2480 return -EIO;
2481 }
2482
2483 te_data->vif = vif;
2484 te_data->duration = duration;
2485 te_data->id = HOT_SPOT_CMD;
2486
2487 spin_unlock_bh(&mvm->time_event_lock);
2488
2489 /*
2490 * Use a notification wait, which really just processes the
2491 * command response and doesn't wait for anything, in order
2492 * to be able to process the response and get the UID inside
2493 * the RX path. Using CMD_WANT_SKB doesn't work because it
2494 * stores the buffer and then wakes up this thread, by which
2495 * time another notification (that the time event started)
2496 * might already be processed unsuccessfully.
2497 */
2498 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2499 time_event_response,
2500 ARRAY_SIZE(time_event_response),
2501 iwl_mvm_rx_aux_roc, te_data);
2502
2503 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2504 &aux_roc_req);
2505
2506 if (res) {
2507 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2508 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2509 goto out_clear_te;
2510 }
2511
2512 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2513 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2514 /* should never fail */
2515 WARN_ON_ONCE(res);
2516
2517 if (res) {
2518 out_clear_te:
2519 spin_lock_bh(&mvm->time_event_lock);
2520 iwl_mvm_te_clear_data(mvm, te_data);
2521 spin_unlock_bh(&mvm->time_event_lock);
2522 }
2523
2524 return res;
2525 }
2526
2527 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2528 struct ieee80211_vif *vif,
2529 struct ieee80211_channel *channel,
2530 int duration,
2531 enum ieee80211_roc_type type)
2532 {
2533 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2534 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2535 struct cfg80211_chan_def chandef;
2536 struct iwl_mvm_phy_ctxt *phy_ctxt;
2537 int ret, i;
2538
2539 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2540 duration, type);
2541
2542 mutex_lock(&mvm->mutex);
2543
2544 switch (vif->type) {
2545 case NL80211_IFTYPE_STATION:
2546 /* Use aux roc framework (HS20) */
2547 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2548 vif, duration);
2549 goto out_unlock;
2550 case NL80211_IFTYPE_P2P_DEVICE:
2551 /* handle below */
2552 break;
2553 default:
2554 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2555 ret = -EINVAL;
2556 goto out_unlock;
2557 }
2558
2559 for (i = 0; i < NUM_PHY_CTX; i++) {
2560 phy_ctxt = &mvm->phy_ctxts[i];
2561 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2562 continue;
2563
2564 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2565 /*
2566 * Unbind the P2P_DEVICE from the current PHY context,
2567 * and if the PHY context is not used remove it.
2568 */
2569 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2570 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2571 goto out_unlock;
2572
2573 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2574
2575 /* Bind the P2P_DEVICE to the current PHY Context */
2576 mvmvif->phy_ctxt = phy_ctxt;
2577
2578 ret = iwl_mvm_binding_add_vif(mvm, vif);
2579 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2580 goto out_unlock;
2581
2582 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2583 goto schedule_time_event;
2584 }
2585 }
2586
2587 /* Need to update the PHY context only if the ROC channel changed */
2588 if (channel == mvmvif->phy_ctxt->channel)
2589 goto schedule_time_event;
2590
2591 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2592
2593 /*
2594 * Change the PHY context configuration as it is currently referenced
2595 * only by the P2P Device MAC
2596 */
2597 if (mvmvif->phy_ctxt->ref == 1) {
2598 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2599 &chandef, 1, 1);
2600 if (ret)
2601 goto out_unlock;
2602 } else {
2603 /*
2604 * The PHY context is shared with other MACs. Need to remove the
2605 * P2P Device from the binding, allocate an new PHY context and
2606 * create a new binding
2607 */
2608 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2609 if (!phy_ctxt) {
2610 ret = -ENOSPC;
2611 goto out_unlock;
2612 }
2613
2614 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2615 1, 1);
2616 if (ret) {
2617 IWL_ERR(mvm, "Failed to change PHY context\n");
2618 goto out_unlock;
2619 }
2620
2621 /* Unbind the P2P_DEVICE from the current PHY context */
2622 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2623 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2624 goto out_unlock;
2625
2626 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2627
2628 /* Bind the P2P_DEVICE to the new allocated PHY context */
2629 mvmvif->phy_ctxt = phy_ctxt;
2630
2631 ret = iwl_mvm_binding_add_vif(mvm, vif);
2632 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2633 goto out_unlock;
2634
2635 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2636 }
2637
2638 schedule_time_event:
2639 /* Schedule the time events */
2640 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2641
2642 out_unlock:
2643 mutex_unlock(&mvm->mutex);
2644 IWL_DEBUG_MAC80211(mvm, "leave\n");
2645 return ret;
2646 }
2647
2648 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2649 {
2650 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2651
2652 IWL_DEBUG_MAC80211(mvm, "enter\n");
2653
2654 mutex_lock(&mvm->mutex);
2655 iwl_mvm_stop_p2p_roc(mvm);
2656 mutex_unlock(&mvm->mutex);
2657
2658 IWL_DEBUG_MAC80211(mvm, "leave\n");
2659 return 0;
2660 }
2661
2662 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2663 struct ieee80211_chanctx_conf *ctx)
2664 {
2665 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2666 struct iwl_mvm_phy_ctxt *phy_ctxt;
2667 int ret;
2668
2669 lockdep_assert_held(&mvm->mutex);
2670
2671 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2672
2673 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2674 if (!phy_ctxt) {
2675 ret = -ENOSPC;
2676 goto out;
2677 }
2678
2679 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2680 ctx->rx_chains_static,
2681 ctx->rx_chains_dynamic);
2682 if (ret) {
2683 IWL_ERR(mvm, "Failed to add PHY context\n");
2684 goto out;
2685 }
2686
2687 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2688 *phy_ctxt_id = phy_ctxt->id;
2689 out:
2690 return ret;
2691 }
2692
2693 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2694 struct ieee80211_chanctx_conf *ctx)
2695 {
2696 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2697 int ret;
2698
2699 mutex_lock(&mvm->mutex);
2700 ret = __iwl_mvm_add_chanctx(mvm, ctx);
2701 mutex_unlock(&mvm->mutex);
2702
2703 return ret;
2704 }
2705
2706 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2707 struct ieee80211_chanctx_conf *ctx)
2708 {
2709 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2710 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2711
2712 lockdep_assert_held(&mvm->mutex);
2713
2714 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2715 }
2716
2717 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2718 struct ieee80211_chanctx_conf *ctx)
2719 {
2720 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2721
2722 mutex_lock(&mvm->mutex);
2723 __iwl_mvm_remove_chanctx(mvm, ctx);
2724 mutex_unlock(&mvm->mutex);
2725 }
2726
2727 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2728 struct ieee80211_chanctx_conf *ctx,
2729 u32 changed)
2730 {
2731 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2732 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2733 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2734
2735 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2736 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2737 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2738 IEEE80211_CHANCTX_CHANGE_RADAR |
2739 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2740 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2741 phy_ctxt->ref, changed))
2742 return;
2743
2744 mutex_lock(&mvm->mutex);
2745 iwl_mvm_bt_coex_vif_change(mvm);
2746 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2747 ctx->rx_chains_static,
2748 ctx->rx_chains_dynamic);
2749 mutex_unlock(&mvm->mutex);
2750 }
2751
2752 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2753 struct ieee80211_vif *vif,
2754 struct ieee80211_chanctx_conf *ctx,
2755 bool switching_chanctx)
2756 {
2757 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2758 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2759 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2760 int ret;
2761
2762 lockdep_assert_held(&mvm->mutex);
2763
2764 mvmvif->phy_ctxt = phy_ctxt;
2765
2766 switch (vif->type) {
2767 case NL80211_IFTYPE_AP:
2768 /* Unless it's a CSA flow we have nothing to do here */
2769 if (vif->csa_active) {
2770 mvmvif->ap_ibss_active = true;
2771 break;
2772 }
2773 case NL80211_IFTYPE_ADHOC:
2774 /*
2775 * The AP binding flow is handled as part of the start_ap flow
2776 * (in bss_info_changed), similarly for IBSS.
2777 */
2778 ret = 0;
2779 goto out;
2780 case NL80211_IFTYPE_STATION:
2781 break;
2782 case NL80211_IFTYPE_MONITOR:
2783 /* always disable PS when a monitor interface is active */
2784 mvmvif->ps_disabled = true;
2785 break;
2786 default:
2787 ret = -EINVAL;
2788 goto out;
2789 }
2790
2791 ret = iwl_mvm_binding_add_vif(mvm, vif);
2792 if (ret)
2793 goto out;
2794
2795 /*
2796 * Power state must be updated before quotas,
2797 * otherwise fw will complain.
2798 */
2799 iwl_mvm_power_update_mac(mvm);
2800
2801 /* Setting the quota at this stage is only required for monitor
2802 * interfaces. For the other types, the bss_info changed flow
2803 * will handle quota settings.
2804 */
2805 if (vif->type == NL80211_IFTYPE_MONITOR) {
2806 mvmvif->monitor_active = true;
2807 ret = iwl_mvm_update_quotas(mvm, NULL);
2808 if (ret)
2809 goto out_remove_binding;
2810 }
2811
2812 /* Handle binding during CSA */
2813 if ((vif->type == NL80211_IFTYPE_AP) ||
2814 (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) {
2815 iwl_mvm_update_quotas(mvm, NULL);
2816 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2817 }
2818
2819 if (vif->csa_active && vif->type == NL80211_IFTYPE_STATION) {
2820 struct iwl_mvm_sta *mvmsta;
2821
2822 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
2823 mvmvif->ap_sta_id);
2824
2825 if (WARN_ON(!mvmsta))
2826 goto out;
2827
2828 /* TODO: only re-enable after the first beacon */
2829 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
2830 }
2831
2832 goto out;
2833
2834 out_remove_binding:
2835 iwl_mvm_binding_remove_vif(mvm, vif);
2836 iwl_mvm_power_update_mac(mvm);
2837 out:
2838 if (ret)
2839 mvmvif->phy_ctxt = NULL;
2840 return ret;
2841 }
2842 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2843 struct ieee80211_vif *vif,
2844 struct ieee80211_chanctx_conf *ctx)
2845 {
2846 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2847 int ret;
2848
2849 mutex_lock(&mvm->mutex);
2850 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
2851 mutex_unlock(&mvm->mutex);
2852
2853 return ret;
2854 }
2855
2856 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2857 struct ieee80211_vif *vif,
2858 struct ieee80211_chanctx_conf *ctx,
2859 bool switching_chanctx)
2860 {
2861 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2862 struct ieee80211_vif *disabled_vif = NULL;
2863 struct iwl_mvm_sta *mvmsta;
2864
2865 lockdep_assert_held(&mvm->mutex);
2866
2867 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2868
2869 switch (vif->type) {
2870 case NL80211_IFTYPE_ADHOC:
2871 goto out;
2872 case NL80211_IFTYPE_MONITOR:
2873 mvmvif->monitor_active = false;
2874 mvmvif->ps_disabled = false;
2875 break;
2876 case NL80211_IFTYPE_AP:
2877 /* This part is triggered only during CSA */
2878 if (!vif->csa_active || !mvmvif->ap_ibss_active)
2879 goto out;
2880
2881 /* Set CS bit on all the stations */
2882 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2883
2884 /* Save blocked iface, the timeout is set on the next beacon */
2885 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2886
2887 mvmvif->ap_ibss_active = false;
2888 break;
2889 case NL80211_IFTYPE_STATION:
2890 if (!switching_chanctx)
2891 break;
2892
2893 disabled_vif = vif;
2894
2895 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
2896 mvmvif->ap_sta_id);
2897
2898 if (!WARN_ON(!mvmsta))
2899 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
2900
2901 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
2902 break;
2903 default:
2904 break;
2905 }
2906
2907 iwl_mvm_update_quotas(mvm, disabled_vif);
2908 iwl_mvm_binding_remove_vif(mvm, vif);
2909
2910 out:
2911 mvmvif->phy_ctxt = NULL;
2912 iwl_mvm_power_update_mac(mvm);
2913 }
2914
2915 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2916 struct ieee80211_vif *vif,
2917 struct ieee80211_chanctx_conf *ctx)
2918 {
2919 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2920
2921 mutex_lock(&mvm->mutex);
2922 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
2923 mutex_unlock(&mvm->mutex);
2924 }
2925
2926 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
2927 struct ieee80211_vif_chanctx_switch *vifs,
2928 int n_vifs,
2929 enum ieee80211_chanctx_switch_mode mode)
2930 {
2931 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2932 int ret;
2933
2934 /* we only support SWAP_CONTEXTS and with a single-vif right now */
2935 if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1)
2936 return -EOPNOTSUPP;
2937
2938 mutex_lock(&mvm->mutex);
2939 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
2940 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2941
2942 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2943 if (ret) {
2944 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2945 goto out_reassign;
2946 }
2947
2948 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2949 true);
2950 if (ret) {
2951 IWL_ERR(mvm,
2952 "failed to assign new_ctx during channel switch\n");
2953 goto out_remove;
2954 }
2955
2956 /* we don't support TDLS during DCM - can be caused by channel switch */
2957 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2958 iwl_mvm_teardown_tdls_peers(mvm);
2959
2960 goto out;
2961
2962 out_remove:
2963 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
2964
2965 out_reassign:
2966 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx);
2967 if (ret) {
2968 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
2969 goto out_restart;
2970 }
2971
2972 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
2973 true);
2974 if (ret) {
2975 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
2976 goto out_restart;
2977 }
2978
2979 goto out;
2980
2981 out_restart:
2982 /* things keep failing, better restart the hw */
2983 iwl_mvm_nic_restart(mvm, false);
2984
2985 out:
2986 mutex_unlock(&mvm->mutex);
2987 return ret;
2988 }
2989
2990 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2991 struct ieee80211_sta *sta,
2992 bool set)
2993 {
2994 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2995 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2996
2997 if (!mvm_sta || !mvm_sta->vif) {
2998 IWL_ERR(mvm, "Station is not associated to a vif\n");
2999 return -EINVAL;
3000 }
3001
3002 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3003 }
3004
3005 #ifdef CONFIG_NL80211_TESTMODE
3006 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3007 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3008 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3009 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3010 };
3011
3012 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3013 struct ieee80211_vif *vif,
3014 void *data, int len)
3015 {
3016 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3017 int err;
3018 u32 noa_duration;
3019
3020 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3021 if (err)
3022 return err;
3023
3024 if (!tb[IWL_MVM_TM_ATTR_CMD])
3025 return -EINVAL;
3026
3027 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3028 case IWL_MVM_TM_CMD_SET_NOA:
3029 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3030 !vif->bss_conf.enable_beacon ||
3031 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3032 return -EINVAL;
3033
3034 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3035 if (noa_duration >= vif->bss_conf.beacon_int)
3036 return -EINVAL;
3037
3038 mvm->noa_duration = noa_duration;
3039 mvm->noa_vif = vif;
3040
3041 return iwl_mvm_update_quotas(mvm, NULL);
3042 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3043 /* must be associated client vif - ignore authorized */
3044 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3045 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3046 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3047 return -EINVAL;
3048
3049 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3050 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3051 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3052 }
3053
3054 return -EOPNOTSUPP;
3055 }
3056
3057 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3058 struct ieee80211_vif *vif,
3059 void *data, int len)
3060 {
3061 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3062 int err;
3063
3064 mutex_lock(&mvm->mutex);
3065 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3066 mutex_unlock(&mvm->mutex);
3067
3068 return err;
3069 }
3070 #endif
3071
3072 static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
3073 struct ieee80211_vif *vif,
3074 struct cfg80211_chan_def *chandef)
3075 {
3076 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3077 struct ieee80211_vif *csa_vif;
3078
3079 mutex_lock(&mvm->mutex);
3080
3081 csa_vif = rcu_dereference_protected(mvm->csa_vif,
3082 lockdep_is_held(&mvm->mutex));
3083 if (WARN(csa_vif && csa_vif->csa_active,
3084 "Another CSA is already in progress"))
3085 goto out_unlock;
3086
3087 IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
3088 chandef->center_freq1);
3089 rcu_assign_pointer(mvm->csa_vif, vif);
3090
3091 out_unlock:
3092 mutex_unlock(&mvm->mutex);
3093 }
3094
3095 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3096 struct ieee80211_vif *vif, u32 queues, bool drop)
3097 {
3098 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3099 struct iwl_mvm_vif *mvmvif;
3100 struct iwl_mvm_sta *mvmsta;
3101
3102 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3103 return;
3104
3105 mutex_lock(&mvm->mutex);
3106 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3107 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
3108
3109 if (WARN_ON_ONCE(!mvmsta)) {
3110 mutex_unlock(&mvm->mutex);
3111 return;
3112 }
3113
3114 if (drop) {
3115 if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
3116 IWL_ERR(mvm, "flush request fail\n");
3117 mutex_unlock(&mvm->mutex);
3118 } else {
3119 u32 tfd_queue_msk = mvmsta->tfd_queue_msk;
3120 mutex_unlock(&mvm->mutex);
3121
3122 /* this can take a while, and we may need/want other operations
3123 * to succeed while doing this, so do it without the mutex held
3124 */
3125 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_queue_msk);
3126 }
3127 }
3128
3129 const struct ieee80211_ops iwl_mvm_hw_ops = {
3130 .tx = iwl_mvm_mac_tx,
3131 .ampdu_action = iwl_mvm_mac_ampdu_action,
3132 .start = iwl_mvm_mac_start,
3133 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3134 .stop = iwl_mvm_mac_stop,
3135 .add_interface = iwl_mvm_mac_add_interface,
3136 .remove_interface = iwl_mvm_mac_remove_interface,
3137 .config = iwl_mvm_mac_config,
3138 .prepare_multicast = iwl_mvm_prepare_multicast,
3139 .configure_filter = iwl_mvm_configure_filter,
3140 .bss_info_changed = iwl_mvm_bss_info_changed,
3141 .hw_scan = iwl_mvm_mac_hw_scan,
3142 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3143 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3144 .sta_state = iwl_mvm_mac_sta_state,
3145 .sta_notify = iwl_mvm_mac_sta_notify,
3146 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3147 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3148 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3149 .sta_rc_update = iwl_mvm_sta_rc_update,
3150 .conf_tx = iwl_mvm_mac_conf_tx,
3151 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3152 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3153 .flush = iwl_mvm_mac_flush,
3154 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3155 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3156 .set_key = iwl_mvm_mac_set_key,
3157 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3158 .remain_on_channel = iwl_mvm_roc,
3159 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3160 .add_chanctx = iwl_mvm_add_chanctx,
3161 .remove_chanctx = iwl_mvm_remove_chanctx,
3162 .change_chanctx = iwl_mvm_change_chanctx,
3163 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3164 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3165 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3166
3167 .start_ap = iwl_mvm_start_ap_ibss,
3168 .stop_ap = iwl_mvm_stop_ap_ibss,
3169 .join_ibss = iwl_mvm_start_ap_ibss,
3170 .leave_ibss = iwl_mvm_stop_ap_ibss,
3171
3172 .set_tim = iwl_mvm_set_tim,
3173
3174 .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
3175
3176 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3177
3178 #ifdef CONFIG_PM_SLEEP
3179 /* look at d3.c */
3180 .suspend = iwl_mvm_suspend,
3181 .resume = iwl_mvm_resume,
3182 .set_wakeup = iwl_mvm_set_wakeup,
3183 .set_rekey_data = iwl_mvm_set_rekey_data,
3184 #if IS_ENABLED(CONFIG_IPV6)
3185 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3186 #endif
3187 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3188 #endif
3189 };
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