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Merge tag 'mac80211-next-for-john-2014-11-04' of git://git.kernel.org/pub/scm/linux...
[people/ms/linux.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 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
258 {
259 iwl_mvm_ref(mvm, ref_type);
260
261 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
262 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
263 HZ)) {
264 WARN_ON_ONCE(1);
265 iwl_mvm_unref(mvm, ref_type);
266 return -EIO;
267 }
268
269 return 0;
270 }
271
272 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
273 {
274 int i;
275
276 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
277 for (i = 0; i < NUM_PHY_CTX; i++) {
278 mvm->phy_ctxts[i].id = i;
279 mvm->phy_ctxts[i].ref = 0;
280 }
281 }
282
283 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
284 {
285 struct ieee80211_hw *hw = mvm->hw;
286 int num_mac, ret, i;
287
288 /* Tell mac80211 our characteristics */
289 hw->flags = IEEE80211_HW_SIGNAL_DBM |
290 IEEE80211_HW_SPECTRUM_MGMT |
291 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
292 IEEE80211_HW_QUEUE_CONTROL |
293 IEEE80211_HW_WANT_MONITOR_VIF |
294 IEEE80211_HW_SUPPORTS_PS |
295 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
296 IEEE80211_HW_AMPDU_AGGREGATION |
297 IEEE80211_HW_TIMING_BEACON_ONLY |
298 IEEE80211_HW_CONNECTION_MONITOR |
299 IEEE80211_HW_CHANCTX_STA_CSA |
300 IEEE80211_HW_SUPPORTS_CLONED_SKBS;
301
302 hw->queues = mvm->first_agg_queue;
303 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
304 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
305 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
306 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
307 hw->rate_control_algorithm = "iwl-mvm-rs";
308
309 /*
310 * Enable 11w if advertised by firmware and software crypto
311 * is not enabled (as the firmware will interpret some mgmt
312 * packets, so enabling it with software crypto isn't safe)
313 */
314 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
315 !iwlwifi_mod_params.sw_crypto)
316 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
317
318 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
319 IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 &&
320 !iwlwifi_mod_params.uapsd_disable) {
321 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
322 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
323 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
324 }
325
326 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
327 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
328
329 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
330 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
331 hw->chanctx_data_size = sizeof(u16);
332
333 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
334 BIT(NL80211_IFTYPE_P2P_CLIENT) |
335 BIT(NL80211_IFTYPE_AP) |
336 BIT(NL80211_IFTYPE_P2P_GO) |
337 BIT(NL80211_IFTYPE_P2P_DEVICE) |
338 BIT(NL80211_IFTYPE_ADHOC);
339
340 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
341 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
342 REGULATORY_DISABLE_BEACON_HINTS;
343
344 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
345 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
346
347 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW)
348 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
349
350 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
351 hw->wiphy->n_iface_combinations =
352 ARRAY_SIZE(iwl_mvm_iface_combinations);
353
354 hw->wiphy->max_remain_on_channel_duration = 10000;
355 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
356
357 /* Extract MAC address */
358 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
359 hw->wiphy->addresses = mvm->addresses;
360 hw->wiphy->n_addresses = 1;
361
362 /* Extract additional MAC addresses if available */
363 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
364 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
365
366 for (i = 1; i < num_mac; i++) {
367 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
368 ETH_ALEN);
369 mvm->addresses[i].addr[5]++;
370 hw->wiphy->n_addresses++;
371 }
372
373 iwl_mvm_reset_phy_ctxts(mvm);
374
375 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
376
377 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
378
379 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
380 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
381 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
382 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
383 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
384 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
385
386 hw->wiphy->hw_version = mvm->trans->hw_id;
387
388 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
389 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
390 else
391 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
392
393 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
394 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
395 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
396 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
397 /* we create the 802.11 header and zero length SSID IE. */
398 hw->wiphy->max_sched_scan_ie_len =
399 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
400 }
401
402 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
403 NL80211_FEATURE_LOW_PRIORITY_SCAN |
404 NL80211_FEATURE_P2P_GO_OPPPS |
405 NL80211_FEATURE_DYNAMIC_SMPS |
406 NL80211_FEATURE_STATIC_SMPS;
407
408 if (mvm->fw->ucode_capa.capa[0] &
409 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
410 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
411 if (mvm->fw->ucode_capa.capa[0] &
412 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
413 hw->wiphy->features |= NL80211_FEATURE_QUIET;
414
415 if (mvm->fw->ucode_capa.capa[0] &
416 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
417 hw->wiphy->features |=
418 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
419
420 if (mvm->fw->ucode_capa.capa[0] &
421 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
422 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
423
424 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
425
426 /* currently FW API supports only one optional cipher scheme */
427 if (mvm->fw->cs[0].cipher) {
428 mvm->hw->n_cipher_schemes = 1;
429 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
430 }
431
432 #ifdef CONFIG_PM_SLEEP
433 if (iwl_mvm_is_d0i3_supported(mvm) &&
434 device_can_wakeup(mvm->trans->dev)) {
435 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
436 hw->wiphy->wowlan = &mvm->wowlan;
437 } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
438 mvm->trans->ops->d3_suspend &&
439 mvm->trans->ops->d3_resume &&
440 device_can_wakeup(mvm->trans->dev)) {
441 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
442 WIPHY_WOWLAN_DISCONNECT |
443 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
444 WIPHY_WOWLAN_RFKILL_RELEASE;
445 if (!iwlwifi_mod_params.sw_crypto)
446 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
447 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
448 WIPHY_WOWLAN_4WAY_HANDSHAKE;
449
450 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
451 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
452 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
453 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
454 hw->wiphy->wowlan = &mvm->wowlan;
455 }
456 #endif
457
458 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
459 /* assign default bcast filtering configuration */
460 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
461 #endif
462
463 ret = iwl_mvm_leds_init(mvm);
464 if (ret)
465 return ret;
466
467 ret = ieee80211_register_hw(mvm->hw);
468 if (ret)
469 iwl_mvm_leds_exit(mvm);
470
471 return ret;
472 }
473
474 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
475 struct ieee80211_sta *sta,
476 struct sk_buff *skb)
477 {
478 struct iwl_mvm_sta *mvmsta;
479 bool defer = false;
480
481 /*
482 * double check the IN_D0I3 flag both before and after
483 * taking the spinlock, in order to prevent taking
484 * the spinlock when not needed.
485 */
486 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
487 return false;
488
489 spin_lock(&mvm->d0i3_tx_lock);
490 /*
491 * testing the flag again ensures the skb dequeue
492 * loop (on d0i3 exit) hasn't run yet.
493 */
494 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
495 goto out;
496
497 mvmsta = iwl_mvm_sta_from_mac80211(sta);
498 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
499 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
500 goto out;
501
502 __skb_queue_tail(&mvm->d0i3_tx, skb);
503 ieee80211_stop_queues(mvm->hw);
504
505 /* trigger wakeup */
506 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
507 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
508
509 defer = true;
510 out:
511 spin_unlock(&mvm->d0i3_tx_lock);
512 return defer;
513 }
514
515 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
516 struct ieee80211_tx_control *control,
517 struct sk_buff *skb)
518 {
519 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
520 struct ieee80211_sta *sta = control->sta;
521 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
522 struct ieee80211_hdr *hdr = (void *)skb->data;
523
524 if (iwl_mvm_is_radio_killed(mvm)) {
525 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
526 goto drop;
527 }
528
529 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
530 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
531 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
532 goto drop;
533
534 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
535 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
536 ieee80211_is_mgmt(hdr->frame_control) &&
537 !ieee80211_is_deauth(hdr->frame_control) &&
538 !ieee80211_is_disassoc(hdr->frame_control) &&
539 !ieee80211_is_action(hdr->frame_control)))
540 sta = NULL;
541
542 if (sta) {
543 if (iwl_mvm_defer_tx(mvm, sta, skb))
544 return;
545 if (iwl_mvm_tx_skb(mvm, skb, sta))
546 goto drop;
547 return;
548 }
549
550 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
551 goto drop;
552 return;
553 drop:
554 ieee80211_free_txskb(hw, skb);
555 }
556
557 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
558 {
559 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
560 return false;
561 return true;
562 }
563
564 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
565 {
566 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
567 return false;
568 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
569 return true;
570
571 /* enabled by default */
572 return true;
573 }
574
575 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
576 struct ieee80211_vif *vif,
577 enum ieee80211_ampdu_mlme_action action,
578 struct ieee80211_sta *sta, u16 tid,
579 u16 *ssn, u8 buf_size)
580 {
581 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
582 int ret;
583 bool tx_agg_ref = false;
584
585 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
586 sta->addr, tid, action);
587
588 if (!(mvm->nvm_data->sku_cap_11n_enable))
589 return -EACCES;
590
591 /* return from D0i3 before starting a new Tx aggregation */
592 switch (action) {
593 case IEEE80211_AMPDU_TX_START:
594 case IEEE80211_AMPDU_TX_STOP_CONT:
595 case IEEE80211_AMPDU_TX_STOP_FLUSH:
596 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
597 case IEEE80211_AMPDU_TX_OPERATIONAL:
598 /*
599 * for tx start, wait synchronously until D0i3 exit to
600 * get the correct sequence number for the tid.
601 * additionally, some other ampdu actions use direct
602 * target access, which is not handled automatically
603 * by the trans layer (unlike commands), so wait for
604 * d0i3 exit in these cases as well.
605 */
606 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
607 if (ret)
608 return ret;
609
610 tx_agg_ref = true;
611 break;
612 default:
613 break;
614 }
615
616 mutex_lock(&mvm->mutex);
617
618 switch (action) {
619 case IEEE80211_AMPDU_RX_START:
620 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
621 ret = -EINVAL;
622 break;
623 }
624 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
625 break;
626 case IEEE80211_AMPDU_RX_STOP:
627 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
628 break;
629 case IEEE80211_AMPDU_TX_START:
630 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
631 ret = -EINVAL;
632 break;
633 }
634 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
635 break;
636 case IEEE80211_AMPDU_TX_STOP_CONT:
637 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
638 break;
639 case IEEE80211_AMPDU_TX_STOP_FLUSH:
640 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
641 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
642 break;
643 case IEEE80211_AMPDU_TX_OPERATIONAL:
644 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
645 break;
646 default:
647 WARN_ON_ONCE(1);
648 ret = -EINVAL;
649 break;
650 }
651 mutex_unlock(&mvm->mutex);
652
653 /*
654 * If the tid is marked as started, we won't use it for offloaded
655 * traffic on the next D0i3 entry. It's safe to unref.
656 */
657 if (tx_agg_ref)
658 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
659
660 return ret;
661 }
662
663 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
664 struct ieee80211_vif *vif)
665 {
666 struct iwl_mvm *mvm = data;
667 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
668
669 mvmvif->uploaded = false;
670 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
671
672 /* does this make sense at all? */
673 mvmvif->color++;
674
675 spin_lock_bh(&mvm->time_event_lock);
676 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
677 spin_unlock_bh(&mvm->time_event_lock);
678
679 mvmvif->phy_ctxt = NULL;
680 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
681 }
682
683 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
684 const void *data, size_t datalen)
685 {
686 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
687 ssize_t bytes_read;
688 ssize_t bytes_read_trans;
689
690 if (offset < dump_ptrs->op_mode_len) {
691 bytes_read = min_t(ssize_t, count,
692 dump_ptrs->op_mode_len - offset);
693 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
694 bytes_read);
695 offset += bytes_read;
696 count -= bytes_read;
697
698 if (count == 0)
699 return bytes_read;
700 } else {
701 bytes_read = 0;
702 }
703
704 if (!dump_ptrs->trans_ptr)
705 return bytes_read;
706
707 offset -= dump_ptrs->op_mode_len;
708 bytes_read_trans = min_t(ssize_t, count,
709 dump_ptrs->trans_ptr->len - offset);
710 memcpy(buffer + bytes_read,
711 (u8 *)dump_ptrs->trans_ptr->data + offset,
712 bytes_read_trans);
713
714 return bytes_read + bytes_read_trans;
715 }
716
717 static void iwl_mvm_free_coredump(const void *data)
718 {
719 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
720
721 vfree(fw_error_dump->op_mode_ptr);
722 vfree(fw_error_dump->trans_ptr);
723 kfree(fw_error_dump);
724 }
725
726 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
727 {
728 struct iwl_fw_error_dump_file *dump_file;
729 struct iwl_fw_error_dump_data *dump_data;
730 struct iwl_fw_error_dump_info *dump_info;
731 struct iwl_mvm_dump_ptrs *fw_error_dump;
732 const struct fw_img *img;
733 u32 sram_len, sram_ofs;
734 u32 file_len, rxf_len;
735 unsigned long flags;
736 int reg_val;
737
738 lockdep_assert_held(&mvm->mutex);
739
740 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
741 if (!fw_error_dump)
742 return;
743
744 img = &mvm->fw->img[mvm->cur_ucode];
745 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
746 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
747
748 /* reading buffer size */
749 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
750 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
751
752 /* the register holds the value divided by 128 */
753 rxf_len = rxf_len << 7;
754
755 file_len = sizeof(*dump_file) +
756 sizeof(*dump_data) * 3 +
757 sram_len +
758 rxf_len +
759 sizeof(*dump_info);
760
761 dump_file = vzalloc(file_len);
762 if (!dump_file) {
763 kfree(fw_error_dump);
764 return;
765 }
766
767 fw_error_dump->op_mode_ptr = dump_file;
768
769 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
770 dump_data = (void *)dump_file->data;
771
772 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
773 dump_data->len = cpu_to_le32(sizeof(*dump_info));
774 dump_info = (void *) dump_data->data;
775 dump_info->device_family =
776 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
777 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
778 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
779 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
780 sizeof(dump_info->fw_human_readable));
781 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
782 sizeof(dump_info->dev_human_readable));
783 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
784 sizeof(dump_info->bus_human_readable));
785
786 dump_data = iwl_fw_error_next_data(dump_data);
787 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
788 dump_data->len = cpu_to_le32(rxf_len);
789
790 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
791 u32 *rxf = (void *)dump_data->data;
792 int i;
793
794 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
795 iwl_trans_write_prph(mvm->trans,
796 RXF_LD_FENCE_OFFSET_ADDR,
797 i * sizeof(u32));
798 rxf[i] = iwl_trans_read_prph(mvm->trans,
799 RXF_FIFO_RD_FENCE_ADDR);
800 }
801 iwl_trans_release_nic_access(mvm->trans, &flags);
802 }
803
804 dump_data = iwl_fw_error_next_data(dump_data);
805 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
806 dump_data->len = cpu_to_le32(sram_len);
807 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
808 sram_len);
809
810 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
811 fw_error_dump->op_mode_len = file_len;
812 if (fw_error_dump->trans_ptr)
813 file_len += fw_error_dump->trans_ptr->len;
814 dump_file->file_len = cpu_to_le32(file_len);
815
816 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
817 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
818 }
819
820 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
821 {
822 iwl_mvm_fw_error_dump(mvm);
823
824 iwl_trans_stop_device(mvm->trans);
825
826 mvm->scan_status = IWL_MVM_SCAN_NONE;
827 mvm->ps_disabled = false;
828
829 /* just in case one was running */
830 ieee80211_remain_on_channel_expired(mvm->hw);
831
832 ieee80211_iterate_active_interfaces_atomic(
833 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
834 iwl_mvm_cleanup_iterator, mvm);
835
836 mvm->p2p_device_vif = NULL;
837 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
838
839 iwl_mvm_reset_phy_ctxts(mvm);
840 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
841 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
842 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
843 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
844 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
845 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
846 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
847 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
848
849 ieee80211_wake_queues(mvm->hw);
850
851 /* cleanup all stale references (scan, roc), but keep the
852 * ucode_down ref until reconfig is complete */
853 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
854
855 /* clear any stale d0i3 state */
856 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
857
858 mvm->vif_count = 0;
859 mvm->rx_ba_sessions = 0;
860 }
861
862 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
863 {
864 int ret;
865
866 lockdep_assert_held(&mvm->mutex);
867
868 /* Clean up some internal and mac80211 state on restart */
869 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
870 iwl_mvm_restart_cleanup(mvm);
871
872 ret = iwl_mvm_up(mvm);
873
874 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
875 /* Something went wrong - we need to finish some cleanup
876 * that normally iwl_mvm_mac_restart_complete() below
877 * would do.
878 */
879 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
880 iwl_mvm_d0i3_enable_tx(mvm, NULL);
881 }
882
883 return ret;
884 }
885
886 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
887 {
888 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
889 int ret;
890
891 mutex_lock(&mvm->mutex);
892 ret = __iwl_mvm_mac_start(mvm);
893 mutex_unlock(&mvm->mutex);
894
895 return ret;
896 }
897
898 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
899 {
900 int ret;
901
902 mutex_lock(&mvm->mutex);
903
904 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
905 iwl_mvm_d0i3_enable_tx(mvm, NULL);
906 ret = iwl_mvm_update_quotas(mvm, NULL);
907 if (ret)
908 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
909 ret);
910
911 /* allow transport/FW low power modes */
912 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
913
914 mutex_unlock(&mvm->mutex);
915 }
916
917 static void
918 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
919 enum ieee80211_reconfig_type reconfig_type)
920 {
921 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
922
923 switch (reconfig_type) {
924 case IEEE80211_RECONFIG_TYPE_RESTART:
925 iwl_mvm_restart_complete(mvm);
926 break;
927 case IEEE80211_RECONFIG_TYPE_SUSPEND:
928 break;
929 }
930 }
931
932 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
933 {
934 lockdep_assert_held(&mvm->mutex);
935
936 /* disallow low power states when the FW is down */
937 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
938
939 /* async_handlers_wk is now blocked */
940
941 /*
942 * The work item could be running or queued if the
943 * ROC time event stops just as we get here.
944 */
945 cancel_work_sync(&mvm->roc_done_wk);
946
947 iwl_trans_stop_device(mvm->trans);
948
949 iwl_mvm_async_handlers_purge(mvm);
950 /* async_handlers_list is empty and will stay empty: HW is stopped */
951
952 /* the fw is stopped, the aux sta is dead: clean up driver state */
953 iwl_mvm_del_aux_sta(mvm);
954
955 mvm->ucode_loaded = false;
956 }
957
958 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
959 {
960 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
961
962 flush_work(&mvm->d0i3_exit_work);
963 flush_work(&mvm->async_handlers_wk);
964 flush_work(&mvm->fw_error_dump_wk);
965
966 mutex_lock(&mvm->mutex);
967 __iwl_mvm_mac_stop(mvm);
968 mutex_unlock(&mvm->mutex);
969
970 /*
971 * The worker might have been waiting for the mutex, let it run and
972 * discover that its list is now empty.
973 */
974 cancel_work_sync(&mvm->async_handlers_wk);
975 }
976
977 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
978 {
979 u16 i;
980
981 lockdep_assert_held(&mvm->mutex);
982
983 for (i = 0; i < NUM_PHY_CTX; i++)
984 if (!mvm->phy_ctxts[i].ref)
985 return &mvm->phy_ctxts[i];
986
987 IWL_ERR(mvm, "No available PHY context\n");
988 return NULL;
989 }
990
991 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
992 s8 tx_power)
993 {
994 /* FW is in charge of regulatory enforcement */
995 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
996 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
997 .pwr_restriction = cpu_to_le16(tx_power),
998 };
999
1000 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1001 sizeof(reduce_txpwr_cmd),
1002 &reduce_txpwr_cmd);
1003 }
1004
1005 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1006 struct ieee80211_vif *vif)
1007 {
1008 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1009 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1010 int ret;
1011
1012 /*
1013 * make sure D0i3 exit is completed, otherwise a target access
1014 * during tx queue configuration could be done when still in
1015 * D0i3 state.
1016 */
1017 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1018 if (ret)
1019 return ret;
1020
1021 /*
1022 * Not much to do here. The stack will not allow interface
1023 * types or combinations that we didn't advertise, so we
1024 * don't really have to check the types.
1025 */
1026
1027 mutex_lock(&mvm->mutex);
1028
1029 /* Allocate resources for the MAC context, and add it to the fw */
1030 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1031 if (ret)
1032 goto out_unlock;
1033
1034 /* Counting number of interfaces is needed for legacy PM */
1035 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1036 mvm->vif_count++;
1037
1038 /*
1039 * The AP binding flow can be done only after the beacon
1040 * template is configured (which happens only in the mac80211
1041 * start_ap() flow), and adding the broadcast station can happen
1042 * only after the binding.
1043 * In addition, since modifying the MAC before adding a bcast
1044 * station is not allowed by the FW, delay the adding of MAC context to
1045 * the point where we can also add the bcast station.
1046 * In short: there's not much we can do at this point, other than
1047 * allocating resources :)
1048 */
1049 if (vif->type == NL80211_IFTYPE_AP ||
1050 vif->type == NL80211_IFTYPE_ADHOC) {
1051 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1052 if (ret) {
1053 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1054 goto out_release;
1055 }
1056
1057 iwl_mvm_vif_dbgfs_register(mvm, vif);
1058 goto out_unlock;
1059 }
1060
1061 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1062 if (ret)
1063 goto out_release;
1064
1065 ret = iwl_mvm_power_update_mac(mvm);
1066 if (ret)
1067 goto out_release;
1068
1069 /* beacon filtering */
1070 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1071 if (ret)
1072 goto out_remove_mac;
1073
1074 if (!mvm->bf_allowed_vif &&
1075 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1076 mvm->bf_allowed_vif = mvmvif;
1077 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1078 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1079 }
1080
1081 /*
1082 * P2P_DEVICE interface does not have a channel context assigned to it,
1083 * so a dedicated PHY context is allocated to it and the corresponding
1084 * MAC context is bound to it at this stage.
1085 */
1086 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1087
1088 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1089 if (!mvmvif->phy_ctxt) {
1090 ret = -ENOSPC;
1091 goto out_free_bf;
1092 }
1093
1094 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1095 ret = iwl_mvm_binding_add_vif(mvm, vif);
1096 if (ret)
1097 goto out_unref_phy;
1098
1099 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1100 if (ret)
1101 goto out_unbind;
1102
1103 /* Save a pointer to p2p device vif, so it can later be used to
1104 * update the p2p device MAC when a GO is started/stopped */
1105 mvm->p2p_device_vif = vif;
1106 }
1107
1108 iwl_mvm_vif_dbgfs_register(mvm, vif);
1109 goto out_unlock;
1110
1111 out_unbind:
1112 iwl_mvm_binding_remove_vif(mvm, vif);
1113 out_unref_phy:
1114 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1115 out_free_bf:
1116 if (mvm->bf_allowed_vif == mvmvif) {
1117 mvm->bf_allowed_vif = NULL;
1118 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1119 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1120 }
1121 out_remove_mac:
1122 mvmvif->phy_ctxt = NULL;
1123 iwl_mvm_mac_ctxt_remove(mvm, vif);
1124 out_release:
1125 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1126 mvm->vif_count--;
1127
1128 iwl_mvm_mac_ctxt_release(mvm, vif);
1129 out_unlock:
1130 mutex_unlock(&mvm->mutex);
1131
1132 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1133
1134 return ret;
1135 }
1136
1137 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1138 struct ieee80211_vif *vif)
1139 {
1140 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1141
1142 if (tfd_msk) {
1143 mutex_lock(&mvm->mutex);
1144 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1145 mutex_unlock(&mvm->mutex);
1146 }
1147
1148 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1149 /*
1150 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1151 * We assume here that all the packets sent to the OFFCHANNEL
1152 * queue are sent in ROC session.
1153 */
1154 flush_work(&mvm->roc_done_wk);
1155 } else {
1156 /*
1157 * By now, all the AC queues are empty. The AGG queues are
1158 * empty too. We already got all the Tx responses for all the
1159 * packets in the queues. The drain work can have been
1160 * triggered. Flush it.
1161 */
1162 flush_work(&mvm->sta_drained_wk);
1163 }
1164 }
1165
1166 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1167 struct ieee80211_vif *vif)
1168 {
1169 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1170 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1171
1172 iwl_mvm_prepare_mac_removal(mvm, vif);
1173
1174 mutex_lock(&mvm->mutex);
1175
1176 if (mvm->bf_allowed_vif == mvmvif) {
1177 mvm->bf_allowed_vif = NULL;
1178 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1179 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1180 }
1181
1182 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1183
1184 /*
1185 * For AP/GO interface, the tear down of the resources allocated to the
1186 * interface is be handled as part of the stop_ap flow.
1187 */
1188 if (vif->type == NL80211_IFTYPE_AP ||
1189 vif->type == NL80211_IFTYPE_ADHOC) {
1190 #ifdef CONFIG_NL80211_TESTMODE
1191 if (vif == mvm->noa_vif) {
1192 mvm->noa_vif = NULL;
1193 mvm->noa_duration = 0;
1194 }
1195 #endif
1196 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1197 goto out_release;
1198 }
1199
1200 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1201 mvm->p2p_device_vif = NULL;
1202 iwl_mvm_rm_bcast_sta(mvm, vif);
1203 iwl_mvm_binding_remove_vif(mvm, vif);
1204 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1205 mvmvif->phy_ctxt = NULL;
1206 }
1207
1208 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1209 mvm->vif_count--;
1210
1211 iwl_mvm_power_update_mac(mvm);
1212 iwl_mvm_mac_ctxt_remove(mvm, vif);
1213
1214 out_release:
1215 iwl_mvm_mac_ctxt_release(mvm, vif);
1216 mutex_unlock(&mvm->mutex);
1217 }
1218
1219 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1220 {
1221 return 0;
1222 }
1223
1224 struct iwl_mvm_mc_iter_data {
1225 struct iwl_mvm *mvm;
1226 int port_id;
1227 };
1228
1229 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1230 struct ieee80211_vif *vif)
1231 {
1232 struct iwl_mvm_mc_iter_data *data = _data;
1233 struct iwl_mvm *mvm = data->mvm;
1234 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1235 int ret, len;
1236
1237 /* if we don't have free ports, mcast frames will be dropped */
1238 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1239 return;
1240
1241 if (vif->type != NL80211_IFTYPE_STATION ||
1242 !vif->bss_conf.assoc)
1243 return;
1244
1245 cmd->port_id = data->port_id++;
1246 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1247 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1248
1249 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1250 if (ret)
1251 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1252 }
1253
1254 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1255 {
1256 struct iwl_mvm_mc_iter_data iter_data = {
1257 .mvm = mvm,
1258 };
1259
1260 lockdep_assert_held(&mvm->mutex);
1261
1262 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1263 return;
1264
1265 ieee80211_iterate_active_interfaces_atomic(
1266 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1267 iwl_mvm_mc_iface_iterator, &iter_data);
1268 }
1269
1270 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1271 struct netdev_hw_addr_list *mc_list)
1272 {
1273 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1274 struct iwl_mcast_filter_cmd *cmd;
1275 struct netdev_hw_addr *addr;
1276 int addr_count;
1277 bool pass_all;
1278 int len;
1279
1280 addr_count = netdev_hw_addr_list_count(mc_list);
1281 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1282 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1283 if (pass_all)
1284 addr_count = 0;
1285
1286 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1287 cmd = kzalloc(len, GFP_ATOMIC);
1288 if (!cmd)
1289 return 0;
1290
1291 if (pass_all) {
1292 cmd->pass_all = 1;
1293 return (u64)(unsigned long)cmd;
1294 }
1295
1296 netdev_hw_addr_list_for_each(addr, mc_list) {
1297 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1298 cmd->count, addr->addr);
1299 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1300 addr->addr, ETH_ALEN);
1301 cmd->count++;
1302 }
1303
1304 return (u64)(unsigned long)cmd;
1305 }
1306
1307 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1308 unsigned int changed_flags,
1309 unsigned int *total_flags,
1310 u64 multicast)
1311 {
1312 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1313 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1314
1315 mutex_lock(&mvm->mutex);
1316
1317 /* replace previous configuration */
1318 kfree(mvm->mcast_filter_cmd);
1319 mvm->mcast_filter_cmd = cmd;
1320
1321 if (!cmd)
1322 goto out;
1323
1324 iwl_mvm_recalc_multicast(mvm);
1325 out:
1326 mutex_unlock(&mvm->mutex);
1327 *total_flags = 0;
1328 }
1329
1330 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1331 struct iwl_bcast_iter_data {
1332 struct iwl_mvm *mvm;
1333 struct iwl_bcast_filter_cmd *cmd;
1334 u8 current_filter;
1335 };
1336
1337 static void
1338 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1339 const struct iwl_fw_bcast_filter *in_filter,
1340 struct iwl_fw_bcast_filter *out_filter)
1341 {
1342 struct iwl_fw_bcast_filter_attr *attr;
1343 int i;
1344
1345 memcpy(out_filter, in_filter, sizeof(*out_filter));
1346
1347 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1348 attr = &out_filter->attrs[i];
1349
1350 if (!attr->mask)
1351 break;
1352
1353 switch (attr->reserved1) {
1354 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1355 if (vif->bss_conf.arp_addr_cnt != 1) {
1356 attr->mask = 0;
1357 continue;
1358 }
1359
1360 attr->val = vif->bss_conf.arp_addr_list[0];
1361 break;
1362 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1363 attr->val = *(__be32 *)&vif->addr[2];
1364 break;
1365 default:
1366 break;
1367 }
1368 attr->reserved1 = 0;
1369 out_filter->num_attrs++;
1370 }
1371 }
1372
1373 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1374 struct ieee80211_vif *vif)
1375 {
1376 struct iwl_bcast_iter_data *data = _data;
1377 struct iwl_mvm *mvm = data->mvm;
1378 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1379 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1380 struct iwl_fw_bcast_mac *bcast_mac;
1381 int i;
1382
1383 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1384 return;
1385
1386 bcast_mac = &cmd->macs[mvmvif->id];
1387
1388 /*
1389 * enable filtering only for associated stations, but not for P2P
1390 * Clients
1391 */
1392 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1393 !vif->bss_conf.assoc)
1394 return;
1395
1396 bcast_mac->default_discard = 1;
1397
1398 /* copy all configured filters */
1399 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1400 /*
1401 * Make sure we don't exceed our filters limit.
1402 * if there is still a valid filter to be configured,
1403 * be on the safe side and just allow bcast for this mac.
1404 */
1405 if (WARN_ON_ONCE(data->current_filter >=
1406 ARRAY_SIZE(cmd->filters))) {
1407 bcast_mac->default_discard = 0;
1408 bcast_mac->attached_filters = 0;
1409 break;
1410 }
1411
1412 iwl_mvm_set_bcast_filter(vif,
1413 &mvm->bcast_filters[i],
1414 &cmd->filters[data->current_filter]);
1415
1416 /* skip current filter if it contains no attributes */
1417 if (!cmd->filters[data->current_filter].num_attrs)
1418 continue;
1419
1420 /* attach the filter to current mac */
1421 bcast_mac->attached_filters |=
1422 cpu_to_le16(BIT(data->current_filter));
1423
1424 data->current_filter++;
1425 }
1426 }
1427
1428 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1429 struct iwl_bcast_filter_cmd *cmd)
1430 {
1431 struct iwl_bcast_iter_data iter_data = {
1432 .mvm = mvm,
1433 .cmd = cmd,
1434 };
1435
1436 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1437 return false;
1438
1439 memset(cmd, 0, sizeof(*cmd));
1440 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1441 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1442
1443 #ifdef CONFIG_IWLWIFI_DEBUGFS
1444 /* use debugfs filters/macs if override is configured */
1445 if (mvm->dbgfs_bcast_filtering.override) {
1446 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1447 sizeof(cmd->filters));
1448 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1449 sizeof(cmd->macs));
1450 return true;
1451 }
1452 #endif
1453
1454 /* if no filters are configured, do nothing */
1455 if (!mvm->bcast_filters)
1456 return false;
1457
1458 /* configure and attach these filters for each associated sta vif */
1459 ieee80211_iterate_active_interfaces(
1460 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1461 iwl_mvm_bcast_filter_iterator, &iter_data);
1462
1463 return true;
1464 }
1465 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1466 struct ieee80211_vif *vif)
1467 {
1468 struct iwl_bcast_filter_cmd cmd;
1469
1470 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1471 return 0;
1472
1473 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1474 return 0;
1475
1476 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1477 sizeof(cmd), &cmd);
1478 }
1479 #else
1480 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1481 struct ieee80211_vif *vif)
1482 {
1483 return 0;
1484 }
1485 #endif
1486
1487 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1488 struct ieee80211_vif *vif,
1489 struct ieee80211_bss_conf *bss_conf,
1490 u32 changes)
1491 {
1492 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1493 int ret;
1494
1495 /*
1496 * Re-calculate the tsf id, as the master-slave relations depend on the
1497 * beacon interval, which was not known when the station interface was
1498 * added.
1499 */
1500 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1501 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1502
1503 /*
1504 * If we're not associated yet, take the (new) BSSID before associating
1505 * so the firmware knows. If we're already associated, then use the old
1506 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1507 * branch for disassociation below.
1508 */
1509 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1510 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1511
1512 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1513 if (ret)
1514 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1515
1516 /* after sending it once, adopt mac80211 data */
1517 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1518 mvmvif->associated = bss_conf->assoc;
1519
1520 if (changes & BSS_CHANGED_ASSOC) {
1521 if (bss_conf->assoc) {
1522 /* add quota for this interface */
1523 ret = iwl_mvm_update_quotas(mvm, NULL);
1524 if (ret) {
1525 IWL_ERR(mvm, "failed to update quotas\n");
1526 return;
1527 }
1528
1529 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1530 &mvm->status)) {
1531 /*
1532 * If we're restarting then the firmware will
1533 * obviously have lost synchronisation with
1534 * the AP. It will attempt to synchronise by
1535 * itself, but we can make it more reliable by
1536 * scheduling a session protection time event.
1537 *
1538 * The firmware needs to receive a beacon to
1539 * catch up with synchronisation, use 110% of
1540 * the beacon interval.
1541 *
1542 * Set a large maximum delay to allow for more
1543 * than a single interface.
1544 */
1545 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1546 iwl_mvm_protect_session(mvm, vif, dur, dur,
1547 5 * dur, false);
1548 }
1549
1550 iwl_mvm_sf_update(mvm, vif, false);
1551 iwl_mvm_power_vif_assoc(mvm, vif);
1552 if (vif->p2p) {
1553 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1554 iwl_mvm_update_smps(mvm, vif,
1555 IWL_MVM_SMPS_REQ_PROT,
1556 IEEE80211_SMPS_DYNAMIC);
1557 }
1558 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1559 /*
1560 * If update fails - SF might be running in associated
1561 * mode while disassociated - which is forbidden.
1562 */
1563 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1564 "Failed to update SF upon disassociation\n");
1565
1566 /* remove AP station now that the MAC is unassoc */
1567 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1568 if (ret)
1569 IWL_ERR(mvm, "failed to remove AP station\n");
1570
1571 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1572 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1573 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1574 /* remove 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
1579 if (vif->p2p)
1580 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1581
1582 /* this will take the cleared BSSID from bss_conf */
1583 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1584 if (ret)
1585 IWL_ERR(mvm,
1586 "failed to update MAC %pM (clear after unassoc)\n",
1587 vif->addr);
1588 }
1589
1590 iwl_mvm_recalc_multicast(mvm);
1591 iwl_mvm_configure_bcast_filter(mvm, vif);
1592
1593 /* reset rssi values */
1594 mvmvif->bf_data.ave_beacon_signal = 0;
1595
1596 iwl_mvm_bt_coex_vif_change(mvm);
1597 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1598 IEEE80211_SMPS_AUTOMATIC);
1599 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1600 /*
1601 * We received a beacon _after_ association so
1602 * remove the session protection.
1603 */
1604 iwl_mvm_remove_time_event(mvm, mvmvif,
1605 &mvmvif->time_event_data);
1606 }
1607
1608 if (changes & BSS_CHANGED_BEACON_INFO) {
1609 iwl_mvm_sf_update(mvm, vif, false);
1610 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1611 }
1612
1613 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1614 ret = iwl_mvm_power_update_mac(mvm);
1615 if (ret)
1616 IWL_ERR(mvm, "failed to update power mode\n");
1617 }
1618
1619 if (changes & BSS_CHANGED_TXPOWER) {
1620 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1621 bss_conf->txpower);
1622 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1623 }
1624
1625 if (changes & BSS_CHANGED_CQM) {
1626 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1627 /* reset cqm events tracking */
1628 mvmvif->bf_data.last_cqm_event = 0;
1629 if (mvmvif->bf_data.bf_enabled) {
1630 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1631 if (ret)
1632 IWL_ERR(mvm,
1633 "failed to update CQM thresholds\n");
1634 }
1635 }
1636
1637 if (changes & BSS_CHANGED_ARP_FILTER) {
1638 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1639 iwl_mvm_configure_bcast_filter(mvm, vif);
1640 }
1641 }
1642
1643 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1644 struct ieee80211_vif *vif)
1645 {
1646 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1647 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1648 int ret;
1649
1650 /*
1651 * iwl_mvm_mac_ctxt_add() might read directly from the device
1652 * (the system time), so make sure it is available.
1653 */
1654 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1655 if (ret)
1656 return ret;
1657
1658 mutex_lock(&mvm->mutex);
1659
1660 /* Send the beacon template */
1661 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1662 if (ret)
1663 goto out_unlock;
1664
1665 /*
1666 * Re-calculate the tsf id, as the master-slave relations depend on the
1667 * beacon interval, which was not known when the AP interface was added.
1668 */
1669 if (vif->type == NL80211_IFTYPE_AP)
1670 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1671
1672 /* Add the mac context */
1673 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1674 if (ret)
1675 goto out_unlock;
1676
1677 /* Perform the binding */
1678 ret = iwl_mvm_binding_add_vif(mvm, vif);
1679 if (ret)
1680 goto out_remove;
1681
1682 /* Send the bcast station. At this stage the TBTT and DTIM time events
1683 * are added and applied to the scheduler */
1684 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1685 if (ret)
1686 goto out_unbind;
1687
1688 /* must be set before quota calculations */
1689 mvmvif->ap_ibss_active = true;
1690
1691 /* power updated needs to be done before quotas */
1692 iwl_mvm_power_update_mac(mvm);
1693
1694 ret = iwl_mvm_update_quotas(mvm, NULL);
1695 if (ret)
1696 goto out_quota_failed;
1697
1698 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1699 if (vif->p2p && mvm->p2p_device_vif)
1700 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1701
1702 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1703
1704 iwl_mvm_bt_coex_vif_change(mvm);
1705
1706 /* we don't support TDLS during DCM */
1707 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1708 iwl_mvm_teardown_tdls_peers(mvm);
1709
1710 mutex_unlock(&mvm->mutex);
1711 return 0;
1712
1713 out_quota_failed:
1714 iwl_mvm_power_update_mac(mvm);
1715 mvmvif->ap_ibss_active = false;
1716 iwl_mvm_send_rm_bcast_sta(mvm, vif);
1717 out_unbind:
1718 iwl_mvm_binding_remove_vif(mvm, vif);
1719 out_remove:
1720 iwl_mvm_mac_ctxt_remove(mvm, vif);
1721 out_unlock:
1722 mutex_unlock(&mvm->mutex);
1723 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
1724 return ret;
1725 }
1726
1727 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1728 struct ieee80211_vif *vif)
1729 {
1730 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1731 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1732
1733 iwl_mvm_prepare_mac_removal(mvm, vif);
1734
1735 mutex_lock(&mvm->mutex);
1736
1737 /* Handle AP stop while in CSA */
1738 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1739 iwl_mvm_remove_time_event(mvm, mvmvif,
1740 &mvmvif->time_event_data);
1741 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1742 }
1743
1744 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1745 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1746 mvm->csa_tx_block_bcn_timeout = 0;
1747 }
1748
1749 mvmvif->ap_ibss_active = false;
1750 mvm->ap_last_beacon_gp2 = 0;
1751
1752 iwl_mvm_bt_coex_vif_change(mvm);
1753
1754 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1755
1756 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1757 if (vif->p2p && mvm->p2p_device_vif)
1758 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1759
1760 iwl_mvm_update_quotas(mvm, NULL);
1761 iwl_mvm_send_rm_bcast_sta(mvm, vif);
1762 iwl_mvm_binding_remove_vif(mvm, vif);
1763
1764 iwl_mvm_power_update_mac(mvm);
1765
1766 iwl_mvm_mac_ctxt_remove(mvm, vif);
1767
1768 mutex_unlock(&mvm->mutex);
1769 }
1770
1771 static void
1772 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1773 struct ieee80211_vif *vif,
1774 struct ieee80211_bss_conf *bss_conf,
1775 u32 changes)
1776 {
1777 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1778
1779 /* Changes will be applied when the AP/IBSS is started */
1780 if (!mvmvif->ap_ibss_active)
1781 return;
1782
1783 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1784 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
1785 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
1786 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1787
1788 /* Need to send a new beacon template to the FW */
1789 if (changes & BSS_CHANGED_BEACON &&
1790 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1791 IWL_WARN(mvm, "Failed updating beacon data\n");
1792
1793 if (changes & BSS_CHANGED_TXPOWER) {
1794 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1795 bss_conf->txpower);
1796 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1797 }
1798
1799 }
1800
1801 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1802 struct ieee80211_vif *vif,
1803 struct ieee80211_bss_conf *bss_conf,
1804 u32 changes)
1805 {
1806 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1807
1808 /*
1809 * iwl_mvm_bss_info_changed_station() might call
1810 * iwl_mvm_protect_session(), which reads directly from
1811 * the device (the system time), so make sure it is available.
1812 */
1813 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1814 return;
1815
1816 mutex_lock(&mvm->mutex);
1817
1818 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
1819 iwl_mvm_scan_offload_stop(mvm, true);
1820
1821 switch (vif->type) {
1822 case NL80211_IFTYPE_STATION:
1823 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1824 break;
1825 case NL80211_IFTYPE_AP:
1826 case NL80211_IFTYPE_ADHOC:
1827 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1828 break;
1829 default:
1830 /* shouldn't happen */
1831 WARN_ON_ONCE(1);
1832 }
1833
1834 mutex_unlock(&mvm->mutex);
1835 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
1836 }
1837
1838 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1839 enum iwl_scan_status scan_type)
1840 {
1841 int ret;
1842 bool wait_for_handlers = false;
1843
1844 mutex_lock(&mvm->mutex);
1845
1846 if (mvm->scan_status != scan_type) {
1847 ret = 0;
1848 /* make sure there are no pending notifications */
1849 wait_for_handlers = true;
1850 goto out;
1851 }
1852
1853 switch (scan_type) {
1854 case IWL_MVM_SCAN_SCHED:
1855 ret = iwl_mvm_scan_offload_stop(mvm, true);
1856 break;
1857 case IWL_MVM_SCAN_OS:
1858 ret = iwl_mvm_cancel_scan(mvm);
1859 break;
1860 case IWL_MVM_SCAN_NONE:
1861 default:
1862 WARN_ON_ONCE(1);
1863 ret = -EINVAL;
1864 break;
1865 }
1866 if (ret)
1867 goto out;
1868
1869 wait_for_handlers = true;
1870 out:
1871 mutex_unlock(&mvm->mutex);
1872
1873 /* make sure we consume the completion notification */
1874 if (wait_for_handlers)
1875 iwl_mvm_wait_for_async_handlers(mvm);
1876
1877 return ret;
1878 }
1879 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1880 struct ieee80211_vif *vif,
1881 struct ieee80211_scan_request *hw_req)
1882 {
1883 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1884 struct cfg80211_scan_request *req = &hw_req->req;
1885 int ret;
1886
1887 if (req->n_channels == 0 ||
1888 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1889 return -EINVAL;
1890
1891 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1892 if (ret)
1893 return ret;
1894
1895 mutex_lock(&mvm->mutex);
1896
1897 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1898 ret = -EBUSY;
1899 goto out;
1900 }
1901
1902 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1903
1904 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1905 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1906 else
1907 ret = iwl_mvm_scan_request(mvm, vif, req);
1908
1909 if (ret)
1910 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1911 out:
1912 mutex_unlock(&mvm->mutex);
1913 return ret;
1914 }
1915
1916 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1917 struct ieee80211_vif *vif)
1918 {
1919 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1920
1921 mutex_lock(&mvm->mutex);
1922
1923 iwl_mvm_cancel_scan(mvm);
1924
1925 mutex_unlock(&mvm->mutex);
1926 }
1927
1928 static void
1929 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1930 struct ieee80211_sta *sta, u16 tids,
1931 int num_frames,
1932 enum ieee80211_frame_release_type reason,
1933 bool more_data)
1934 {
1935 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1936
1937 /* Called when we need to transmit (a) frame(s) from mac80211 */
1938
1939 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1940 tids, more_data, false);
1941 }
1942
1943 static void
1944 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1945 struct ieee80211_sta *sta, u16 tids,
1946 int num_frames,
1947 enum ieee80211_frame_release_type reason,
1948 bool more_data)
1949 {
1950 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1951
1952 /* Called when we need to transmit (a) frame(s) from agg queue */
1953
1954 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1955 tids, more_data, true);
1956 }
1957
1958 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1959 struct ieee80211_vif *vif,
1960 enum sta_notify_cmd cmd,
1961 struct ieee80211_sta *sta)
1962 {
1963 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1964 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1965 int tid;
1966
1967 switch (cmd) {
1968 case STA_NOTIFY_SLEEP:
1969 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
1970 ieee80211_sta_block_awake(hw, sta, true);
1971 spin_lock_bh(&mvmsta->lock);
1972 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1973 struct iwl_mvm_tid_data *tid_data;
1974
1975 tid_data = &mvmsta->tid_data[tid];
1976 if (tid_data->state != IWL_AGG_ON &&
1977 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
1978 continue;
1979 if (iwl_mvm_tid_queued(tid_data) == 0)
1980 continue;
1981 ieee80211_sta_set_buffered(sta, tid, true);
1982 }
1983 spin_unlock_bh(&mvmsta->lock);
1984 /*
1985 * The fw updates the STA to be asleep. Tx packets on the Tx
1986 * queues to this station will not be transmitted. The fw will
1987 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1988 */
1989 break;
1990 case STA_NOTIFY_AWAKE:
1991 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1992 break;
1993 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1994 break;
1995 default:
1996 break;
1997 }
1998 }
1999
2000 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2001 struct ieee80211_vif *vif,
2002 struct ieee80211_sta *sta)
2003 {
2004 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2005 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2006
2007 /*
2008 * This is called before mac80211 does RCU synchronisation,
2009 * so here we already invalidate our internal RCU-protected
2010 * station pointer. The rest of the code will thus no longer
2011 * be able to find the station this way, and we don't rely
2012 * on further RCU synchronisation after the sta_state()
2013 * callback deleted the station.
2014 */
2015 mutex_lock(&mvm->mutex);
2016 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2017 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2018 ERR_PTR(-ENOENT));
2019 mutex_unlock(&mvm->mutex);
2020 }
2021
2022 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2023 struct ieee80211_vif *vif,
2024 struct ieee80211_sta *sta,
2025 enum ieee80211_sta_state old_state,
2026 enum ieee80211_sta_state new_state)
2027 {
2028 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2029 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2030 int ret;
2031
2032 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2033 sta->addr, old_state, new_state);
2034
2035 /* this would be a mac80211 bug ... but don't crash */
2036 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2037 return -EINVAL;
2038
2039 /* if a STA is being removed, reuse its ID */
2040 flush_work(&mvm->sta_drained_wk);
2041
2042 mutex_lock(&mvm->mutex);
2043 if (old_state == IEEE80211_STA_NOTEXIST &&
2044 new_state == IEEE80211_STA_NONE) {
2045 /*
2046 * Firmware bug - it'll crash if the beacon interval is less
2047 * than 16. We can't avoid connecting at all, so refuse the
2048 * station state change, this will cause mac80211 to abandon
2049 * attempts to connect to this AP, and eventually wpa_s will
2050 * blacklist the AP...
2051 */
2052 if (vif->type == NL80211_IFTYPE_STATION &&
2053 vif->bss_conf.beacon_int < 16) {
2054 IWL_ERR(mvm,
2055 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2056 sta->addr, vif->bss_conf.beacon_int);
2057 ret = -EINVAL;
2058 goto out_unlock;
2059 }
2060
2061 if (sta->tdls &&
2062 (vif->p2p ||
2063 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2064 IWL_MVM_TDLS_STA_COUNT ||
2065 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2066 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2067 ret = -EBUSY;
2068 goto out_unlock;
2069 }
2070
2071 ret = iwl_mvm_add_sta(mvm, vif, sta);
2072 if (sta->tdls && ret == 0)
2073 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2074 } else if (old_state == IEEE80211_STA_NONE &&
2075 new_state == IEEE80211_STA_AUTH) {
2076 /*
2077 * EBS may be disabled due to previous failures reported by FW.
2078 * Reset EBS status here assuming environment has been changed.
2079 */
2080 mvm->last_ebs_successful = true;
2081 ret = 0;
2082 } else if (old_state == IEEE80211_STA_AUTH &&
2083 new_state == IEEE80211_STA_ASSOC) {
2084 ret = iwl_mvm_update_sta(mvm, vif, sta);
2085 if (ret == 0)
2086 iwl_mvm_rs_rate_init(mvm, sta,
2087 mvmvif->phy_ctxt->channel->band,
2088 true);
2089 } else if (old_state == IEEE80211_STA_ASSOC &&
2090 new_state == IEEE80211_STA_AUTHORIZED) {
2091
2092 /* we don't support TDLS during DCM */
2093 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2094 iwl_mvm_teardown_tdls_peers(mvm);
2095
2096 /* enable beacon filtering */
2097 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2098 ret = 0;
2099 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2100 new_state == IEEE80211_STA_ASSOC) {
2101 /* disable beacon filtering */
2102 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2103 ret = 0;
2104 } else if (old_state == IEEE80211_STA_ASSOC &&
2105 new_state == IEEE80211_STA_AUTH) {
2106 ret = 0;
2107 } else if (old_state == IEEE80211_STA_AUTH &&
2108 new_state == IEEE80211_STA_NONE) {
2109 ret = 0;
2110 } else if (old_state == IEEE80211_STA_NONE &&
2111 new_state == IEEE80211_STA_NOTEXIST) {
2112 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2113 if (sta->tdls)
2114 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2115 } else {
2116 ret = -EIO;
2117 }
2118 out_unlock:
2119 mutex_unlock(&mvm->mutex);
2120
2121 return ret;
2122 }
2123
2124 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2125 {
2126 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2127
2128 mvm->rts_threshold = value;
2129
2130 return 0;
2131 }
2132
2133 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2134 struct ieee80211_vif *vif,
2135 struct ieee80211_sta *sta, u32 changed)
2136 {
2137 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2138
2139 if (vif->type == NL80211_IFTYPE_STATION &&
2140 changed & IEEE80211_RC_NSS_CHANGED)
2141 iwl_mvm_sf_update(mvm, vif, false);
2142 }
2143
2144 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2145 struct ieee80211_vif *vif, u16 ac,
2146 const struct ieee80211_tx_queue_params *params)
2147 {
2148 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2149 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2150
2151 mvmvif->queue_params[ac] = *params;
2152
2153 /*
2154 * No need to update right away, we'll get BSS_CHANGED_QOS
2155 * The exception is P2P_DEVICE interface which needs immediate update.
2156 */
2157 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2158 int ret;
2159
2160 mutex_lock(&mvm->mutex);
2161 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2162 mutex_unlock(&mvm->mutex);
2163 return ret;
2164 }
2165 return 0;
2166 }
2167
2168 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2169 struct ieee80211_vif *vif)
2170 {
2171 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2172 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2173 200 + vif->bss_conf.beacon_int);
2174 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2175 100 + vif->bss_conf.beacon_int);
2176
2177 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2178 return;
2179
2180 /*
2181 * iwl_mvm_protect_session() reads directly from the device
2182 * (the system time), so make sure it is available.
2183 */
2184 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2185 return;
2186
2187 mutex_lock(&mvm->mutex);
2188 /* Try really hard to protect the session and hear a beacon */
2189 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2190 mutex_unlock(&mvm->mutex);
2191
2192 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2193 }
2194
2195 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2196 struct ieee80211_vif *vif,
2197 struct cfg80211_sched_scan_request *req,
2198 struct ieee80211_scan_ies *ies)
2199 {
2200 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2201 int ret;
2202
2203 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2204 if (ret)
2205 return ret;
2206
2207 mutex_lock(&mvm->mutex);
2208
2209 /* Newest FW fixes sched scan while connected on another interface */
2210 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2211 if (!vif->bss_conf.idle) {
2212 ret = -EBUSY;
2213 goto out;
2214 }
2215 } else if (!iwl_mvm_is_idle(mvm)) {
2216 ret = -EBUSY;
2217 goto out;
2218 }
2219
2220 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2221 ret = -EBUSY;
2222 goto out;
2223 }
2224
2225 mvm->scan_status = IWL_MVM_SCAN_SCHED;
2226
2227 ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
2228 if (ret)
2229 mvm->scan_status = IWL_MVM_SCAN_NONE;
2230 out:
2231 mutex_unlock(&mvm->mutex);
2232 return ret;
2233 }
2234
2235 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2236 struct ieee80211_vif *vif)
2237 {
2238 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2239 int ret;
2240
2241 mutex_lock(&mvm->mutex);
2242 ret = iwl_mvm_scan_offload_stop(mvm, false);
2243 mutex_unlock(&mvm->mutex);
2244 iwl_mvm_wait_for_async_handlers(mvm);
2245
2246 return ret;
2247 }
2248
2249 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2250 enum set_key_cmd cmd,
2251 struct ieee80211_vif *vif,
2252 struct ieee80211_sta *sta,
2253 struct ieee80211_key_conf *key)
2254 {
2255 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2256 int ret;
2257
2258 if (iwlwifi_mod_params.sw_crypto) {
2259 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2260 return -EOPNOTSUPP;
2261 }
2262
2263 switch (key->cipher) {
2264 case WLAN_CIPHER_SUITE_TKIP:
2265 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2266 /* fall-through */
2267 case WLAN_CIPHER_SUITE_CCMP:
2268 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2269 break;
2270 case WLAN_CIPHER_SUITE_AES_CMAC:
2271 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2272 break;
2273 case WLAN_CIPHER_SUITE_WEP40:
2274 case WLAN_CIPHER_SUITE_WEP104:
2275 /*
2276 * Support for TX only, at least for now, so accept
2277 * the key and do nothing else. Then mac80211 will
2278 * pass it for TX but we don't have to use it for RX.
2279 */
2280 return 0;
2281 default:
2282 /* currently FW supports only one optional cipher scheme */
2283 if (hw->n_cipher_schemes &&
2284 hw->cipher_schemes->cipher == key->cipher)
2285 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2286 else
2287 return -EOPNOTSUPP;
2288 }
2289
2290 mutex_lock(&mvm->mutex);
2291
2292 switch (cmd) {
2293 case SET_KEY:
2294 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2295 vif->type == NL80211_IFTYPE_AP) && !sta) {
2296 /*
2297 * GTK on AP interface is a TX-only key, return 0;
2298 * on IBSS they're per-station and because we're lazy
2299 * we don't support them for RX, so do the same.
2300 */
2301 ret = 0;
2302 key->hw_key_idx = STA_KEY_IDX_INVALID;
2303 break;
2304 }
2305
2306 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2307 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2308 if (ret) {
2309 IWL_WARN(mvm, "set key failed\n");
2310 /*
2311 * can't add key for RX, but we don't need it
2312 * in the device for TX so still return 0
2313 */
2314 key->hw_key_idx = STA_KEY_IDX_INVALID;
2315 ret = 0;
2316 }
2317
2318 break;
2319 case DISABLE_KEY:
2320 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2321 ret = 0;
2322 break;
2323 }
2324
2325 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2326 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2327 break;
2328 default:
2329 ret = -EINVAL;
2330 }
2331
2332 mutex_unlock(&mvm->mutex);
2333 return ret;
2334 }
2335
2336 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2337 struct ieee80211_vif *vif,
2338 struct ieee80211_key_conf *keyconf,
2339 struct ieee80211_sta *sta,
2340 u32 iv32, u16 *phase1key)
2341 {
2342 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2343
2344 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2345 return;
2346
2347 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2348 }
2349
2350
2351 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2352 struct iwl_rx_packet *pkt, void *data)
2353 {
2354 struct iwl_mvm *mvm =
2355 container_of(notif_wait, struct iwl_mvm, notif_wait);
2356 struct iwl_hs20_roc_res *resp;
2357 int resp_len = iwl_rx_packet_payload_len(pkt);
2358 struct iwl_mvm_time_event_data *te_data = data;
2359
2360 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2361 return true;
2362
2363 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2364 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2365 return true;
2366 }
2367
2368 resp = (void *)pkt->data;
2369
2370 IWL_DEBUG_TE(mvm,
2371 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2372 resp->status, resp->event_unique_id);
2373
2374 te_data->uid = le32_to_cpu(resp->event_unique_id);
2375 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2376 te_data->uid);
2377
2378 spin_lock_bh(&mvm->time_event_lock);
2379 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2380 spin_unlock_bh(&mvm->time_event_lock);
2381
2382 return true;
2383 }
2384
2385 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2386 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2387 struct ieee80211_channel *channel,
2388 struct ieee80211_vif *vif,
2389 int duration)
2390 {
2391 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2392 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2393 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2394 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2395 struct iwl_notification_wait wait_time_event;
2396 struct iwl_hs20_roc_req aux_roc_req = {
2397 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2398 .id_and_color =
2399 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2400 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2401 /* Set the channel info data */
2402 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2403 PHY_BAND_24 : PHY_BAND_5,
2404 .channel_info.channel = channel->hw_value,
2405 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2406 /* Set the time and duration */
2407 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2408 .apply_time_max_delay =
2409 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2410 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2411 };
2412
2413 /* Set the node address */
2414 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2415
2416 lockdep_assert_held(&mvm->mutex);
2417
2418 spin_lock_bh(&mvm->time_event_lock);
2419
2420 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2421 spin_unlock_bh(&mvm->time_event_lock);
2422 return -EIO;
2423 }
2424
2425 te_data->vif = vif;
2426 te_data->duration = duration;
2427 te_data->id = HOT_SPOT_CMD;
2428
2429 spin_unlock_bh(&mvm->time_event_lock);
2430
2431 /*
2432 * Use a notification wait, which really just processes the
2433 * command response and doesn't wait for anything, in order
2434 * to be able to process the response and get the UID inside
2435 * the RX path. Using CMD_WANT_SKB doesn't work because it
2436 * stores the buffer and then wakes up this thread, by which
2437 * time another notification (that the time event started)
2438 * might already be processed unsuccessfully.
2439 */
2440 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2441 time_event_response,
2442 ARRAY_SIZE(time_event_response),
2443 iwl_mvm_rx_aux_roc, te_data);
2444
2445 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2446 &aux_roc_req);
2447
2448 if (res) {
2449 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2450 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2451 goto out_clear_te;
2452 }
2453
2454 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2455 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2456 /* should never fail */
2457 WARN_ON_ONCE(res);
2458
2459 if (res) {
2460 out_clear_te:
2461 spin_lock_bh(&mvm->time_event_lock);
2462 iwl_mvm_te_clear_data(mvm, te_data);
2463 spin_unlock_bh(&mvm->time_event_lock);
2464 }
2465
2466 return res;
2467 }
2468
2469 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2470 struct ieee80211_vif *vif,
2471 struct ieee80211_channel *channel,
2472 int duration,
2473 enum ieee80211_roc_type type)
2474 {
2475 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2476 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2477 struct cfg80211_chan_def chandef;
2478 struct iwl_mvm_phy_ctxt *phy_ctxt;
2479 int ret, i;
2480
2481 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2482 duration, type);
2483
2484 mutex_lock(&mvm->mutex);
2485
2486 switch (vif->type) {
2487 case NL80211_IFTYPE_STATION:
2488 /* Use aux roc framework (HS20) */
2489 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2490 vif, duration);
2491 goto out_unlock;
2492 case NL80211_IFTYPE_P2P_DEVICE:
2493 /* handle below */
2494 break;
2495 default:
2496 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2497 ret = -EINVAL;
2498 goto out_unlock;
2499 }
2500
2501 for (i = 0; i < NUM_PHY_CTX; i++) {
2502 phy_ctxt = &mvm->phy_ctxts[i];
2503 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2504 continue;
2505
2506 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2507 /*
2508 * Unbind the P2P_DEVICE from the current PHY context,
2509 * and if the PHY context is not used remove it.
2510 */
2511 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2512 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2513 goto out_unlock;
2514
2515 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2516
2517 /* Bind the P2P_DEVICE to the current PHY Context */
2518 mvmvif->phy_ctxt = phy_ctxt;
2519
2520 ret = iwl_mvm_binding_add_vif(mvm, vif);
2521 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2522 goto out_unlock;
2523
2524 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2525 goto schedule_time_event;
2526 }
2527 }
2528
2529 /* Need to update the PHY context only if the ROC channel changed */
2530 if (channel == mvmvif->phy_ctxt->channel)
2531 goto schedule_time_event;
2532
2533 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2534
2535 /*
2536 * Change the PHY context configuration as it is currently referenced
2537 * only by the P2P Device MAC
2538 */
2539 if (mvmvif->phy_ctxt->ref == 1) {
2540 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2541 &chandef, 1, 1);
2542 if (ret)
2543 goto out_unlock;
2544 } else {
2545 /*
2546 * The PHY context is shared with other MACs. Need to remove the
2547 * P2P Device from the binding, allocate an new PHY context and
2548 * create a new binding
2549 */
2550 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2551 if (!phy_ctxt) {
2552 ret = -ENOSPC;
2553 goto out_unlock;
2554 }
2555
2556 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2557 1, 1);
2558 if (ret) {
2559 IWL_ERR(mvm, "Failed to change PHY context\n");
2560 goto out_unlock;
2561 }
2562
2563 /* Unbind the P2P_DEVICE from the current PHY context */
2564 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2565 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2566 goto out_unlock;
2567
2568 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2569
2570 /* Bind the P2P_DEVICE to the new allocated PHY context */
2571 mvmvif->phy_ctxt = phy_ctxt;
2572
2573 ret = iwl_mvm_binding_add_vif(mvm, vif);
2574 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2575 goto out_unlock;
2576
2577 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2578 }
2579
2580 schedule_time_event:
2581 /* Schedule the time events */
2582 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2583
2584 out_unlock:
2585 mutex_unlock(&mvm->mutex);
2586 IWL_DEBUG_MAC80211(mvm, "leave\n");
2587 return ret;
2588 }
2589
2590 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2591 {
2592 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2593
2594 IWL_DEBUG_MAC80211(mvm, "enter\n");
2595
2596 mutex_lock(&mvm->mutex);
2597 iwl_mvm_stop_p2p_roc(mvm);
2598 mutex_unlock(&mvm->mutex);
2599
2600 IWL_DEBUG_MAC80211(mvm, "leave\n");
2601 return 0;
2602 }
2603
2604 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2605 struct ieee80211_chanctx_conf *ctx)
2606 {
2607 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2608 struct iwl_mvm_phy_ctxt *phy_ctxt;
2609 int ret;
2610
2611 lockdep_assert_held(&mvm->mutex);
2612
2613 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2614
2615 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2616 if (!phy_ctxt) {
2617 ret = -ENOSPC;
2618 goto out;
2619 }
2620
2621 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2622 ctx->rx_chains_static,
2623 ctx->rx_chains_dynamic);
2624 if (ret) {
2625 IWL_ERR(mvm, "Failed to add PHY context\n");
2626 goto out;
2627 }
2628
2629 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2630 *phy_ctxt_id = phy_ctxt->id;
2631 out:
2632 return ret;
2633 }
2634
2635 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2636 struct ieee80211_chanctx_conf *ctx)
2637 {
2638 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2639 int ret;
2640
2641 mutex_lock(&mvm->mutex);
2642 ret = __iwl_mvm_add_chanctx(mvm, ctx);
2643 mutex_unlock(&mvm->mutex);
2644
2645 return ret;
2646 }
2647
2648 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2649 struct ieee80211_chanctx_conf *ctx)
2650 {
2651 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2652 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2653
2654 lockdep_assert_held(&mvm->mutex);
2655
2656 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2657 }
2658
2659 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2660 struct ieee80211_chanctx_conf *ctx)
2661 {
2662 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2663
2664 mutex_lock(&mvm->mutex);
2665 __iwl_mvm_remove_chanctx(mvm, ctx);
2666 mutex_unlock(&mvm->mutex);
2667 }
2668
2669 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2670 struct ieee80211_chanctx_conf *ctx,
2671 u32 changed)
2672 {
2673 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2674 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2675 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2676
2677 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2678 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2679 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2680 IEEE80211_CHANCTX_CHANGE_RADAR |
2681 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2682 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2683 phy_ctxt->ref, changed))
2684 return;
2685
2686 mutex_lock(&mvm->mutex);
2687 iwl_mvm_bt_coex_vif_change(mvm);
2688 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2689 ctx->rx_chains_static,
2690 ctx->rx_chains_dynamic);
2691 mutex_unlock(&mvm->mutex);
2692 }
2693
2694 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2695 struct ieee80211_vif *vif,
2696 struct ieee80211_chanctx_conf *ctx,
2697 bool switching_chanctx)
2698 {
2699 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2700 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2701 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2702 int ret;
2703
2704 lockdep_assert_held(&mvm->mutex);
2705
2706 mvmvif->phy_ctxt = phy_ctxt;
2707
2708 switch (vif->type) {
2709 case NL80211_IFTYPE_AP:
2710 /* Unless it's a CSA flow we have nothing to do here */
2711 if (vif->csa_active) {
2712 mvmvif->ap_ibss_active = true;
2713 break;
2714 }
2715 case NL80211_IFTYPE_ADHOC:
2716 /*
2717 * The AP binding flow is handled as part of the start_ap flow
2718 * (in bss_info_changed), similarly for IBSS.
2719 */
2720 ret = 0;
2721 goto out;
2722 case NL80211_IFTYPE_STATION:
2723 break;
2724 case NL80211_IFTYPE_MONITOR:
2725 /* always disable PS when a monitor interface is active */
2726 mvmvif->ps_disabled = true;
2727 break;
2728 default:
2729 ret = -EINVAL;
2730 goto out;
2731 }
2732
2733 ret = iwl_mvm_binding_add_vif(mvm, vif);
2734 if (ret)
2735 goto out;
2736
2737 /*
2738 * Power state must be updated before quotas,
2739 * otherwise fw will complain.
2740 */
2741 iwl_mvm_power_update_mac(mvm);
2742
2743 /* Setting the quota at this stage is only required for monitor
2744 * interfaces. For the other types, the bss_info changed flow
2745 * will handle quota settings.
2746 */
2747 if (vif->type == NL80211_IFTYPE_MONITOR) {
2748 mvmvif->monitor_active = true;
2749 ret = iwl_mvm_update_quotas(mvm, NULL);
2750 if (ret)
2751 goto out_remove_binding;
2752 }
2753
2754 /* Handle binding during CSA */
2755 if ((vif->type == NL80211_IFTYPE_AP) ||
2756 (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) {
2757 iwl_mvm_update_quotas(mvm, NULL);
2758 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2759 }
2760
2761 if (vif->csa_active && vif->type == NL80211_IFTYPE_STATION) {
2762 struct iwl_mvm_sta *mvmsta;
2763
2764 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
2765 mvmvif->ap_sta_id);
2766
2767 if (WARN_ON(!mvmsta))
2768 goto out;
2769
2770 /* TODO: only re-enable after the first beacon */
2771 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
2772 }
2773
2774 goto out;
2775
2776 out_remove_binding:
2777 iwl_mvm_binding_remove_vif(mvm, vif);
2778 iwl_mvm_power_update_mac(mvm);
2779 out:
2780 if (ret)
2781 mvmvif->phy_ctxt = NULL;
2782 return ret;
2783 }
2784 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2785 struct ieee80211_vif *vif,
2786 struct ieee80211_chanctx_conf *ctx)
2787 {
2788 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2789 int ret;
2790
2791 mutex_lock(&mvm->mutex);
2792 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
2793 mutex_unlock(&mvm->mutex);
2794
2795 return ret;
2796 }
2797
2798 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2799 struct ieee80211_vif *vif,
2800 struct ieee80211_chanctx_conf *ctx,
2801 bool switching_chanctx)
2802 {
2803 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2804 struct ieee80211_vif *disabled_vif = NULL;
2805 struct iwl_mvm_sta *mvmsta;
2806
2807 lockdep_assert_held(&mvm->mutex);
2808
2809 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2810
2811 switch (vif->type) {
2812 case NL80211_IFTYPE_ADHOC:
2813 goto out;
2814 case NL80211_IFTYPE_MONITOR:
2815 mvmvif->monitor_active = false;
2816 mvmvif->ps_disabled = false;
2817 break;
2818 case NL80211_IFTYPE_AP:
2819 /* This part is triggered only during CSA */
2820 if (!vif->csa_active || !mvmvif->ap_ibss_active)
2821 goto out;
2822
2823 /* Set CS bit on all the stations */
2824 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2825
2826 /* Save blocked iface, the timeout is set on the next beacon */
2827 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2828
2829 mvmvif->ap_ibss_active = false;
2830 break;
2831 case NL80211_IFTYPE_STATION:
2832 if (!switching_chanctx)
2833 break;
2834
2835 disabled_vif = vif;
2836
2837 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
2838 mvmvif->ap_sta_id);
2839
2840 if (!WARN_ON(!mvmsta))
2841 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
2842
2843 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
2844 break;
2845 default:
2846 break;
2847 }
2848
2849 iwl_mvm_update_quotas(mvm, disabled_vif);
2850 iwl_mvm_binding_remove_vif(mvm, vif);
2851
2852 out:
2853 mvmvif->phy_ctxt = NULL;
2854 iwl_mvm_power_update_mac(mvm);
2855 }
2856
2857 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2858 struct ieee80211_vif *vif,
2859 struct ieee80211_chanctx_conf *ctx)
2860 {
2861 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2862
2863 mutex_lock(&mvm->mutex);
2864 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
2865 mutex_unlock(&mvm->mutex);
2866 }
2867
2868 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
2869 struct ieee80211_vif_chanctx_switch *vifs,
2870 int n_vifs,
2871 enum ieee80211_chanctx_switch_mode mode)
2872 {
2873 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2874 int ret;
2875
2876 /* we only support SWAP_CONTEXTS and with a single-vif right now */
2877 if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1)
2878 return -EOPNOTSUPP;
2879
2880 mutex_lock(&mvm->mutex);
2881 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
2882 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2883
2884 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2885 if (ret) {
2886 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2887 goto out_reassign;
2888 }
2889
2890 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2891 true);
2892 if (ret) {
2893 IWL_ERR(mvm,
2894 "failed to assign new_ctx during channel switch\n");
2895 goto out_remove;
2896 }
2897
2898 /* we don't support TDLS during DCM - can be caused by channel switch */
2899 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2900 iwl_mvm_teardown_tdls_peers(mvm);
2901
2902 goto out;
2903
2904 out_remove:
2905 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
2906
2907 out_reassign:
2908 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx);
2909 if (ret) {
2910 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
2911 goto out_restart;
2912 }
2913
2914 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
2915 true);
2916 if (ret) {
2917 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
2918 goto out_restart;
2919 }
2920
2921 goto out;
2922
2923 out_restart:
2924 /* things keep failing, better restart the hw */
2925 iwl_mvm_nic_restart(mvm, false);
2926
2927 out:
2928 mutex_unlock(&mvm->mutex);
2929 return ret;
2930 }
2931
2932 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2933 struct ieee80211_sta *sta,
2934 bool set)
2935 {
2936 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2937 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2938
2939 if (!mvm_sta || !mvm_sta->vif) {
2940 IWL_ERR(mvm, "Station is not associated to a vif\n");
2941 return -EINVAL;
2942 }
2943
2944 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2945 }
2946
2947 #ifdef CONFIG_NL80211_TESTMODE
2948 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2949 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2950 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
2951 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
2952 };
2953
2954 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
2955 struct ieee80211_vif *vif,
2956 void *data, int len)
2957 {
2958 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
2959 int err;
2960 u32 noa_duration;
2961
2962 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
2963 if (err)
2964 return err;
2965
2966 if (!tb[IWL_MVM_TM_ATTR_CMD])
2967 return -EINVAL;
2968
2969 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
2970 case IWL_MVM_TM_CMD_SET_NOA:
2971 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
2972 !vif->bss_conf.enable_beacon ||
2973 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
2974 return -EINVAL;
2975
2976 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
2977 if (noa_duration >= vif->bss_conf.beacon_int)
2978 return -EINVAL;
2979
2980 mvm->noa_duration = noa_duration;
2981 mvm->noa_vif = vif;
2982
2983 return iwl_mvm_update_quotas(mvm, NULL);
2984 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
2985 /* must be associated client vif - ignore authorized */
2986 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
2987 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
2988 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
2989 return -EINVAL;
2990
2991 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
2992 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2993 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
2994 }
2995
2996 return -EOPNOTSUPP;
2997 }
2998
2999 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3000 struct ieee80211_vif *vif,
3001 void *data, int len)
3002 {
3003 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3004 int err;
3005
3006 mutex_lock(&mvm->mutex);
3007 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3008 mutex_unlock(&mvm->mutex);
3009
3010 return err;
3011 }
3012 #endif
3013
3014 static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
3015 struct ieee80211_vif *vif,
3016 struct cfg80211_chan_def *chandef)
3017 {
3018 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3019 struct ieee80211_vif *csa_vif;
3020
3021 mutex_lock(&mvm->mutex);
3022
3023 csa_vif = rcu_dereference_protected(mvm->csa_vif,
3024 lockdep_is_held(&mvm->mutex));
3025 if (WARN(csa_vif && csa_vif->csa_active,
3026 "Another CSA is already in progress"))
3027 goto out_unlock;
3028
3029 IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
3030 chandef->center_freq1);
3031 rcu_assign_pointer(mvm->csa_vif, vif);
3032
3033 out_unlock:
3034 mutex_unlock(&mvm->mutex);
3035 }
3036
3037 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3038 struct ieee80211_vif *vif, u32 queues, bool drop)
3039 {
3040 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3041 struct iwl_mvm_vif *mvmvif;
3042 struct iwl_mvm_sta *mvmsta;
3043
3044 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3045 return;
3046
3047 mutex_lock(&mvm->mutex);
3048 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3049 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
3050
3051 if (WARN_ON_ONCE(!mvmsta)) {
3052 mutex_unlock(&mvm->mutex);
3053 return;
3054 }
3055
3056 if (drop) {
3057 if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
3058 IWL_ERR(mvm, "flush request fail\n");
3059 mutex_unlock(&mvm->mutex);
3060 } else {
3061 u32 tfd_queue_msk = mvmsta->tfd_queue_msk;
3062 mutex_unlock(&mvm->mutex);
3063
3064 /* this can take a while, and we may need/want other operations
3065 * to succeed while doing this, so do it without the mutex held
3066 */
3067 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_queue_msk);
3068 }
3069 }
3070
3071 const struct ieee80211_ops iwl_mvm_hw_ops = {
3072 .tx = iwl_mvm_mac_tx,
3073 .ampdu_action = iwl_mvm_mac_ampdu_action,
3074 .start = iwl_mvm_mac_start,
3075 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3076 .stop = iwl_mvm_mac_stop,
3077 .add_interface = iwl_mvm_mac_add_interface,
3078 .remove_interface = iwl_mvm_mac_remove_interface,
3079 .config = iwl_mvm_mac_config,
3080 .prepare_multicast = iwl_mvm_prepare_multicast,
3081 .configure_filter = iwl_mvm_configure_filter,
3082 .bss_info_changed = iwl_mvm_bss_info_changed,
3083 .hw_scan = iwl_mvm_mac_hw_scan,
3084 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3085 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3086 .sta_state = iwl_mvm_mac_sta_state,
3087 .sta_notify = iwl_mvm_mac_sta_notify,
3088 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3089 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3090 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3091 .sta_rc_update = iwl_mvm_sta_rc_update,
3092 .conf_tx = iwl_mvm_mac_conf_tx,
3093 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3094 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3095 .flush = iwl_mvm_mac_flush,
3096 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3097 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3098 .set_key = iwl_mvm_mac_set_key,
3099 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3100 .remain_on_channel = iwl_mvm_roc,
3101 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3102 .add_chanctx = iwl_mvm_add_chanctx,
3103 .remove_chanctx = iwl_mvm_remove_chanctx,
3104 .change_chanctx = iwl_mvm_change_chanctx,
3105 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3106 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3107 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3108
3109 .start_ap = iwl_mvm_start_ap_ibss,
3110 .stop_ap = iwl_mvm_stop_ap_ibss,
3111 .join_ibss = iwl_mvm_start_ap_ibss,
3112 .leave_ibss = iwl_mvm_stop_ap_ibss,
3113
3114 .set_tim = iwl_mvm_set_tim,
3115
3116 .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
3117
3118 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3119
3120 #ifdef CONFIG_PM_SLEEP
3121 /* look at d3.c */
3122 .suspend = iwl_mvm_suspend,
3123 .resume = iwl_mvm_resume,
3124 .set_wakeup = iwl_mvm_set_wakeup,
3125 .set_rekey_data = iwl_mvm_set_rekey_data,
3126 #if IS_ENABLED(CONFIG_IPV6)
3127 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3128 #endif
3129 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3130 #endif
3131 };
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