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[mirror_ubuntu-eoan-kernel.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
27 *
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65 #include <linux/kernel.h>
66 #include <linux/slab.h>
67 #include <linux/skbuff.h>
68 #include <linux/netdevice.h>
69 #include <linux/etherdevice.h>
70 #include <linux/ip.h>
71 #include <linux/if_arp.h>
72 #include <net/mac80211.h>
73 #include <net/ieee80211_radiotap.h>
74 #include <net/tcp.h>
75
76 #include "iwl-op-mode.h"
77 #include "iwl-io.h"
78 #include "mvm.h"
79 #include "sta.h"
80 #include "time-event.h"
81 #include "iwl-eeprom-parse.h"
82 #include "fw-api-scan.h"
83 #include "iwl-phy-db.h"
84 #include "testmode.h"
85 #include "iwl-fw-error-dump.h"
86 #include "iwl-prph.h"
87
88 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
89 {
90 .max = 1,
91 .types = BIT(NL80211_IFTYPE_STATION),
92 },
93 {
94 .max = 1,
95 .types = BIT(NL80211_IFTYPE_AP) |
96 BIT(NL80211_IFTYPE_P2P_CLIENT) |
97 BIT(NL80211_IFTYPE_P2P_GO),
98 },
99 {
100 .max = 1,
101 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
102 },
103 };
104
105 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
106 {
107 .num_different_channels = 1,
108 .max_interfaces = 3,
109 .limits = iwl_mvm_limits,
110 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
111 },
112 };
113
114 #ifdef CONFIG_PM_SLEEP
115 static const struct nl80211_wowlan_tcp_data_token_feature
116 iwl_mvm_wowlan_tcp_token_feature = {
117 .min_len = 0,
118 .max_len = 255,
119 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
120 };
121
122 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
123 .tok = &iwl_mvm_wowlan_tcp_token_feature,
124 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
125 sizeof(struct ethhdr) -
126 sizeof(struct iphdr) -
127 sizeof(struct tcphdr),
128 .data_interval_max = 65535, /* __le16 in API */
129 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
130 sizeof(struct ethhdr) -
131 sizeof(struct iphdr) -
132 sizeof(struct tcphdr),
133 .seq = true,
134 };
135 #endif
136
137 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
138 /*
139 * Use the reserved field to indicate magic values.
140 * these values will only be used internally by the driver,
141 * and won't make it to the fw (reserved will be 0).
142 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
143 * be the vif's ip address. in case there is not a single
144 * ip address (0, or more than 1), this attribute will
145 * be skipped.
146 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
147 * the LSB bytes of the vif's mac address
148 */
149 enum {
150 BC_FILTER_MAGIC_NONE = 0,
151 BC_FILTER_MAGIC_IP,
152 BC_FILTER_MAGIC_MAC,
153 };
154
155 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
156 {
157 /* arp */
158 .discard = 0,
159 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
160 .attrs = {
161 {
162 /* frame type - arp, hw type - ethernet */
163 .offset_type =
164 BCAST_FILTER_OFFSET_PAYLOAD_START,
165 .offset = sizeof(rfc1042_header),
166 .val = cpu_to_be32(0x08060001),
167 .mask = cpu_to_be32(0xffffffff),
168 },
169 {
170 /* arp dest ip */
171 .offset_type =
172 BCAST_FILTER_OFFSET_PAYLOAD_START,
173 .offset = sizeof(rfc1042_header) + 2 +
174 sizeof(struct arphdr) +
175 ETH_ALEN + sizeof(__be32) +
176 ETH_ALEN,
177 .mask = cpu_to_be32(0xffffffff),
178 /* mark it as special field */
179 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
180 },
181 },
182 },
183 {
184 /* dhcp offer bcast */
185 .discard = 0,
186 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
187 .attrs = {
188 {
189 /* udp dest port - 68 (bootp client)*/
190 .offset_type = BCAST_FILTER_OFFSET_IP_END,
191 .offset = offsetof(struct udphdr, dest),
192 .val = cpu_to_be32(0x00440000),
193 .mask = cpu_to_be32(0xffff0000),
194 },
195 {
196 /* dhcp - lsb bytes of client hw address */
197 .offset_type = BCAST_FILTER_OFFSET_IP_END,
198 .offset = 38,
199 .mask = cpu_to_be32(0xffffffff),
200 /* mark it as special field */
201 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
202 },
203 },
204 },
205 /* last filter must be empty */
206 {},
207 };
208 #endif
209
210 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
211 {
212 if (!iwl_mvm_is_d0i3_supported(mvm))
213 return;
214
215 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
216 spin_lock_bh(&mvm->refs_lock);
217 mvm->refs[ref_type]++;
218 spin_unlock_bh(&mvm->refs_lock);
219 iwl_trans_ref(mvm->trans);
220 }
221
222 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
223 {
224 if (!iwl_mvm_is_d0i3_supported(mvm))
225 return;
226
227 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
228 spin_lock_bh(&mvm->refs_lock);
229 WARN_ON(!mvm->refs[ref_type]--);
230 spin_unlock_bh(&mvm->refs_lock);
231 iwl_trans_unref(mvm->trans);
232 }
233
234 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
235 enum iwl_mvm_ref_type except_ref)
236 {
237 int i, j;
238
239 if (!iwl_mvm_is_d0i3_supported(mvm))
240 return;
241
242 spin_lock_bh(&mvm->refs_lock);
243 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
244 if (except_ref == i || !mvm->refs[i])
245 continue;
246
247 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
248 i, mvm->refs[i]);
249 for (j = 0; j < mvm->refs[i]; j++)
250 iwl_trans_unref(mvm->trans);
251 mvm->refs[i] = 0;
252 }
253 spin_unlock_bh(&mvm->refs_lock);
254 }
255
256 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
257 {
258 iwl_mvm_ref(mvm, ref_type);
259
260 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
261 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
262 HZ)) {
263 WARN_ON_ONCE(1);
264 iwl_mvm_unref(mvm, ref_type);
265 return -EIO;
266 }
267
268 return 0;
269 }
270
271 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
272 {
273 int i;
274
275 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
276 for (i = 0; i < NUM_PHY_CTX; i++) {
277 mvm->phy_ctxts[i].id = i;
278 mvm->phy_ctxts[i].ref = 0;
279 }
280 }
281
282 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
283 {
284 struct ieee80211_hw *hw = mvm->hw;
285 int num_mac, ret, i;
286
287 /* Tell mac80211 our characteristics */
288 hw->flags = IEEE80211_HW_SIGNAL_DBM |
289 IEEE80211_HW_SPECTRUM_MGMT |
290 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
291 IEEE80211_HW_QUEUE_CONTROL |
292 IEEE80211_HW_WANT_MONITOR_VIF |
293 IEEE80211_HW_SUPPORTS_PS |
294 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
295 IEEE80211_HW_AMPDU_AGGREGATION |
296 IEEE80211_HW_TIMING_BEACON_ONLY |
297 IEEE80211_HW_CONNECTION_MONITOR |
298 IEEE80211_HW_CHANCTX_STA_CSA |
299 IEEE80211_HW_SUPPORTS_CLONED_SKBS;
300
301 hw->queues = mvm->first_agg_queue;
302 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
303 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
304 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
305 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
306 hw->rate_control_algorithm = "iwl-mvm-rs";
307
308 /*
309 * Enable 11w if advertised by firmware and software crypto
310 * is not enabled (as the firmware will interpret some mgmt
311 * packets, so enabling it with software crypto isn't safe)
312 */
313 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
314 !iwlwifi_mod_params.sw_crypto)
315 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
316
317 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
318 IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 &&
319 !iwlwifi_mod_params.uapsd_disable) {
320 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
321 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
322 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
323 }
324
325 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
326 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
327
328 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
329 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
330 hw->chanctx_data_size = sizeof(u16);
331
332 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
333 BIT(NL80211_IFTYPE_P2P_CLIENT) |
334 BIT(NL80211_IFTYPE_AP) |
335 BIT(NL80211_IFTYPE_P2P_GO) |
336 BIT(NL80211_IFTYPE_P2P_DEVICE) |
337 BIT(NL80211_IFTYPE_ADHOC);
338
339 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
340 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
341 REGULATORY_DISABLE_BEACON_HINTS;
342
343 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
344 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
345
346 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW)
347 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
348
349 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
350 hw->wiphy->n_iface_combinations =
351 ARRAY_SIZE(iwl_mvm_iface_combinations);
352
353 hw->wiphy->max_remain_on_channel_duration = 10000;
354 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
355
356 /* Extract MAC address */
357 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
358 hw->wiphy->addresses = mvm->addresses;
359 hw->wiphy->n_addresses = 1;
360
361 /* Extract additional MAC addresses if available */
362 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
363 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
364
365 for (i = 1; i < num_mac; i++) {
366 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
367 ETH_ALEN);
368 mvm->addresses[i].addr[5]++;
369 hw->wiphy->n_addresses++;
370 }
371
372 iwl_mvm_reset_phy_ctxts(mvm);
373
374 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
375
376 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
377
378 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
379 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
380 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
381 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
382 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
383 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
384
385 hw->wiphy->hw_version = mvm->trans->hw_id;
386
387 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
388 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
389 else
390 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
391
392 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
393 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
394 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
395 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
396 /* we create the 802.11 header and zero length SSID IE. */
397 hw->wiphy->max_sched_scan_ie_len =
398 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
399 }
400
401 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
402 NL80211_FEATURE_LOW_PRIORITY_SCAN |
403 NL80211_FEATURE_P2P_GO_OPPPS |
404 NL80211_FEATURE_DYNAMIC_SMPS |
405 NL80211_FEATURE_STATIC_SMPS;
406
407 if (mvm->fw->ucode_capa.capa[0] &
408 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
409 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
410 if (mvm->fw->ucode_capa.capa[0] &
411 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
412 hw->wiphy->features |= NL80211_FEATURE_QUIET;
413
414 if (mvm->fw->ucode_capa.capa[0] &
415 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
416 hw->wiphy->features |=
417 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
418
419 if (mvm->fw->ucode_capa.capa[0] &
420 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
421 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
422
423 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
424
425 /* currently FW API supports only one optional cipher scheme */
426 if (mvm->fw->cs[0].cipher) {
427 mvm->hw->n_cipher_schemes = 1;
428 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
429 }
430
431 #ifdef CONFIG_PM_SLEEP
432 if (iwl_mvm_is_d0i3_supported(mvm) &&
433 device_can_wakeup(mvm->trans->dev)) {
434 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
435 hw->wiphy->wowlan = &mvm->wowlan;
436 } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
437 mvm->trans->ops->d3_suspend &&
438 mvm->trans->ops->d3_resume &&
439 device_can_wakeup(mvm->trans->dev)) {
440 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
441 WIPHY_WOWLAN_DISCONNECT |
442 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
443 WIPHY_WOWLAN_RFKILL_RELEASE;
444 if (!iwlwifi_mod_params.sw_crypto)
445 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
446 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
447 WIPHY_WOWLAN_4WAY_HANDSHAKE;
448
449 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
450 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
451 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
452 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
453 hw->wiphy->wowlan = &mvm->wowlan;
454 }
455 #endif
456
457 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
458 /* assign default bcast filtering configuration */
459 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
460 #endif
461
462 ret = iwl_mvm_leds_init(mvm);
463 if (ret)
464 return ret;
465
466 ret = ieee80211_register_hw(mvm->hw);
467 if (ret)
468 iwl_mvm_leds_exit(mvm);
469
470 return ret;
471 }
472
473 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
474 struct ieee80211_sta *sta,
475 struct sk_buff *skb)
476 {
477 struct iwl_mvm_sta *mvmsta;
478 bool defer = false;
479
480 /*
481 * double check the IN_D0I3 flag both before and after
482 * taking the spinlock, in order to prevent taking
483 * the spinlock when not needed.
484 */
485 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
486 return false;
487
488 spin_lock(&mvm->d0i3_tx_lock);
489 /*
490 * testing the flag again ensures the skb dequeue
491 * loop (on d0i3 exit) hasn't run yet.
492 */
493 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
494 goto out;
495
496 mvmsta = iwl_mvm_sta_from_mac80211(sta);
497 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
498 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
499 goto out;
500
501 __skb_queue_tail(&mvm->d0i3_tx, skb);
502 ieee80211_stop_queues(mvm->hw);
503
504 /* trigger wakeup */
505 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
506 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
507
508 defer = true;
509 out:
510 spin_unlock(&mvm->d0i3_tx_lock);
511 return defer;
512 }
513
514 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
515 struct ieee80211_tx_control *control,
516 struct sk_buff *skb)
517 {
518 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
519 struct ieee80211_sta *sta = control->sta;
520 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
521 struct ieee80211_hdr *hdr = (void *)skb->data;
522
523 if (iwl_mvm_is_radio_killed(mvm)) {
524 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
525 goto drop;
526 }
527
528 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
529 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
530 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
531 goto drop;
532
533 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
534 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
535 ieee80211_is_mgmt(hdr->frame_control) &&
536 !ieee80211_is_deauth(hdr->frame_control) &&
537 !ieee80211_is_disassoc(hdr->frame_control) &&
538 !ieee80211_is_action(hdr->frame_control)))
539 sta = NULL;
540
541 if (sta) {
542 if (iwl_mvm_defer_tx(mvm, sta, skb))
543 return;
544 if (iwl_mvm_tx_skb(mvm, skb, sta))
545 goto drop;
546 return;
547 }
548
549 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
550 goto drop;
551 return;
552 drop:
553 ieee80211_free_txskb(hw, skb);
554 }
555
556 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
557 {
558 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
559 return false;
560 return true;
561 }
562
563 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
564 {
565 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
566 return false;
567 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
568 return true;
569
570 /* enabled by default */
571 return true;
572 }
573
574 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
575 struct ieee80211_vif *vif,
576 enum ieee80211_ampdu_mlme_action action,
577 struct ieee80211_sta *sta, u16 tid,
578 u16 *ssn, u8 buf_size)
579 {
580 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
581 int ret;
582 bool tx_agg_ref = false;
583
584 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
585 sta->addr, tid, action);
586
587 if (!(mvm->nvm_data->sku_cap_11n_enable))
588 return -EACCES;
589
590 /* return from D0i3 before starting a new Tx aggregation */
591 switch (action) {
592 case IEEE80211_AMPDU_TX_START:
593 case IEEE80211_AMPDU_TX_STOP_CONT:
594 case IEEE80211_AMPDU_TX_STOP_FLUSH:
595 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
596 case IEEE80211_AMPDU_TX_OPERATIONAL:
597 /*
598 * for tx start, wait synchronously until D0i3 exit to
599 * get the correct sequence number for the tid.
600 * additionally, some other ampdu actions use direct
601 * target access, which is not handled automatically
602 * by the trans layer (unlike commands), so wait for
603 * d0i3 exit in these cases as well.
604 */
605 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
606 if (ret)
607 return ret;
608
609 tx_agg_ref = true;
610 break;
611 default:
612 break;
613 }
614
615 mutex_lock(&mvm->mutex);
616
617 switch (action) {
618 case IEEE80211_AMPDU_RX_START:
619 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
620 ret = -EINVAL;
621 break;
622 }
623 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
624 break;
625 case IEEE80211_AMPDU_RX_STOP:
626 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
627 break;
628 case IEEE80211_AMPDU_TX_START:
629 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
630 ret = -EINVAL;
631 break;
632 }
633 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
634 break;
635 case IEEE80211_AMPDU_TX_STOP_CONT:
636 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
637 break;
638 case IEEE80211_AMPDU_TX_STOP_FLUSH:
639 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
640 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
641 break;
642 case IEEE80211_AMPDU_TX_OPERATIONAL:
643 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
644 break;
645 default:
646 WARN_ON_ONCE(1);
647 ret = -EINVAL;
648 break;
649 }
650 mutex_unlock(&mvm->mutex);
651
652 /*
653 * If the tid is marked as started, we won't use it for offloaded
654 * traffic on the next D0i3 entry. It's safe to unref.
655 */
656 if (tx_agg_ref)
657 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
658
659 return ret;
660 }
661
662 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
663 struct ieee80211_vif *vif)
664 {
665 struct iwl_mvm *mvm = data;
666 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
667
668 mvmvif->uploaded = false;
669 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
670
671 /* does this make sense at all? */
672 mvmvif->color++;
673
674 spin_lock_bh(&mvm->time_event_lock);
675 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
676 spin_unlock_bh(&mvm->time_event_lock);
677
678 mvmvif->phy_ctxt = NULL;
679 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
680 }
681
682 #ifdef CONFIG_IWLWIFI_DEBUGFS
683 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
684 {
685 static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL };
686 struct iwl_fw_error_dump_file *dump_file;
687 struct iwl_fw_error_dump_data *dump_data;
688 struct iwl_fw_error_dump_info *dump_info;
689 struct iwl_mvm_dump_ptrs *fw_error_dump;
690 const struct fw_img *img;
691 u32 sram_len, sram_ofs;
692 u32 file_len, rxf_len;
693 unsigned long flags;
694 int reg_val;
695
696 lockdep_assert_held(&mvm->mutex);
697
698 if (mvm->fw_error_dump)
699 return;
700
701 fw_error_dump = kzalloc(sizeof(*mvm->fw_error_dump), GFP_KERNEL);
702 if (!fw_error_dump)
703 return;
704
705 img = &mvm->fw->img[mvm->cur_ucode];
706 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
707 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
708
709 /* reading buffer size */
710 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
711 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
712
713 /* the register holds the value divided by 128 */
714 rxf_len = rxf_len << 7;
715
716 file_len = sizeof(*dump_file) +
717 sizeof(*dump_data) * 3 +
718 sram_len +
719 rxf_len +
720 sizeof(*dump_info);
721
722 dump_file = vzalloc(file_len);
723 if (!dump_file) {
724 kfree(fw_error_dump);
725 return;
726 }
727
728 fw_error_dump->op_mode_ptr = dump_file;
729
730 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
731 dump_data = (void *)dump_file->data;
732
733 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
734 dump_data->len = cpu_to_le32(sizeof(*dump_info));
735 dump_info = (void *) dump_data->data;
736 dump_info->device_family =
737 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
738 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
739 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
740 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
741 sizeof(dump_info->fw_human_readable));
742 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
743 sizeof(dump_info->dev_human_readable));
744 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
745 sizeof(dump_info->bus_human_readable));
746
747 dump_data = iwl_fw_error_next_data(dump_data);
748 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
749 dump_data->len = cpu_to_le32(rxf_len);
750
751 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
752 u32 *rxf = (void *)dump_data->data;
753 int i;
754
755 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
756 iwl_trans_write_prph(mvm->trans,
757 RXF_LD_FENCE_OFFSET_ADDR,
758 i * sizeof(u32));
759 rxf[i] = iwl_trans_read_prph(mvm->trans,
760 RXF_FIFO_RD_FENCE_ADDR);
761 }
762 iwl_trans_release_nic_access(mvm->trans, &flags);
763 }
764
765 dump_data = iwl_fw_error_next_data(dump_data);
766 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
767 dump_data->len = cpu_to_le32(sram_len);
768 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
769 sram_len);
770
771 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
772 fw_error_dump->op_mode_len = file_len;
773 if (fw_error_dump->trans_ptr)
774 file_len += fw_error_dump->trans_ptr->len;
775 dump_file->file_len = cpu_to_le32(file_len);
776 mvm->fw_error_dump = fw_error_dump;
777
778 /* notify the userspace about the error we had */
779 kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env);
780 }
781 #endif
782
783 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
784 {
785 iwl_mvm_fw_error_dump(mvm);
786
787 iwl_trans_stop_device(mvm->trans);
788
789 mvm->scan_status = IWL_MVM_SCAN_NONE;
790 mvm->ps_disabled = false;
791 mvm->calibrating = false;
792
793 /* just in case one was running */
794 ieee80211_remain_on_channel_expired(mvm->hw);
795
796 ieee80211_iterate_active_interfaces_atomic(
797 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
798 iwl_mvm_cleanup_iterator, mvm);
799
800 mvm->p2p_device_vif = NULL;
801 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
802
803 iwl_mvm_reset_phy_ctxts(mvm);
804 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
805 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
806 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
807 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
808 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
809 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
810 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
811 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
812
813 ieee80211_wake_queues(mvm->hw);
814
815 /* cleanup all stale references (scan, roc), but keep the
816 * ucode_down ref until reconfig is complete */
817 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
818
819 /* clear any stale d0i3 state */
820 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
821
822 mvm->vif_count = 0;
823 mvm->rx_ba_sessions = 0;
824 }
825
826 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
827 {
828 int ret;
829
830 lockdep_assert_held(&mvm->mutex);
831
832 /* Clean up some internal and mac80211 state on restart */
833 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
834 iwl_mvm_restart_cleanup(mvm);
835
836 ret = iwl_mvm_up(mvm);
837
838 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
839 /* Something went wrong - we need to finish some cleanup
840 * that normally iwl_mvm_mac_restart_complete() below
841 * would do.
842 */
843 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
844 iwl_mvm_d0i3_enable_tx(mvm, NULL);
845 }
846
847 return ret;
848 }
849
850 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
851 {
852 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
853 int ret;
854
855 mutex_lock(&mvm->mutex);
856 ret = __iwl_mvm_mac_start(mvm);
857 mutex_unlock(&mvm->mutex);
858
859 return ret;
860 }
861
862 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
863 {
864 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
865 int ret;
866
867 mutex_lock(&mvm->mutex);
868
869 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
870 iwl_mvm_d0i3_enable_tx(mvm, NULL);
871 ret = iwl_mvm_update_quotas(mvm, NULL);
872 if (ret)
873 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
874 ret);
875
876 /* allow transport/FW low power modes */
877 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
878
879 mutex_unlock(&mvm->mutex);
880 }
881
882 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
883 {
884 lockdep_assert_held(&mvm->mutex);
885
886 /* disallow low power states when the FW is down */
887 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
888
889 /* async_handlers_wk is now blocked */
890
891 /*
892 * The work item could be running or queued if the
893 * ROC time event stops just as we get here.
894 */
895 cancel_work_sync(&mvm->roc_done_wk);
896
897 iwl_trans_stop_device(mvm->trans);
898
899 iwl_mvm_async_handlers_purge(mvm);
900 /* async_handlers_list is empty and will stay empty: HW is stopped */
901
902 /* the fw is stopped, the aux sta is dead: clean up driver state */
903 iwl_mvm_del_aux_sta(mvm);
904
905 mvm->ucode_loaded = false;
906 }
907
908 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
909 {
910 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
911
912 flush_work(&mvm->d0i3_exit_work);
913 flush_work(&mvm->async_handlers_wk);
914 flush_work(&mvm->fw_error_dump_wk);
915
916 mutex_lock(&mvm->mutex);
917 __iwl_mvm_mac_stop(mvm);
918 mutex_unlock(&mvm->mutex);
919
920 /*
921 * The worker might have been waiting for the mutex, let it run and
922 * discover that its list is now empty.
923 */
924 cancel_work_sync(&mvm->async_handlers_wk);
925 }
926
927 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
928 {
929 u16 i;
930
931 lockdep_assert_held(&mvm->mutex);
932
933 for (i = 0; i < NUM_PHY_CTX; i++)
934 if (!mvm->phy_ctxts[i].ref)
935 return &mvm->phy_ctxts[i];
936
937 IWL_ERR(mvm, "No available PHY context\n");
938 return NULL;
939 }
940
941 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
942 s8 tx_power)
943 {
944 /* FW is in charge of regulatory enforcement */
945 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
946 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
947 .pwr_restriction = cpu_to_le16(tx_power),
948 };
949
950 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
951 sizeof(reduce_txpwr_cmd),
952 &reduce_txpwr_cmd);
953 }
954
955 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
956 struct ieee80211_vif *vif)
957 {
958 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
959 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
960 int ret;
961
962 /*
963 * make sure D0i3 exit is completed, otherwise a target access
964 * during tx queue configuration could be done when still in
965 * D0i3 state.
966 */
967 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
968 if (ret)
969 return ret;
970
971 /*
972 * Not much to do here. The stack will not allow interface
973 * types or combinations that we didn't advertise, so we
974 * don't really have to check the types.
975 */
976
977 mutex_lock(&mvm->mutex);
978
979 /* Allocate resources for the MAC context, and add it to the fw */
980 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
981 if (ret)
982 goto out_unlock;
983
984 /* Counting number of interfaces is needed for legacy PM */
985 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
986 mvm->vif_count++;
987
988 /*
989 * The AP binding flow can be done only after the beacon
990 * template is configured (which happens only in the mac80211
991 * start_ap() flow), and adding the broadcast station can happen
992 * only after the binding.
993 * In addition, since modifying the MAC before adding a bcast
994 * station is not allowed by the FW, delay the adding of MAC context to
995 * the point where we can also add the bcast station.
996 * In short: there's not much we can do at this point, other than
997 * allocating resources :)
998 */
999 if (vif->type == NL80211_IFTYPE_AP ||
1000 vif->type == NL80211_IFTYPE_ADHOC) {
1001 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1002 if (ret) {
1003 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1004 goto out_release;
1005 }
1006
1007 iwl_mvm_vif_dbgfs_register(mvm, vif);
1008 goto out_unlock;
1009 }
1010
1011 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1012 if (ret)
1013 goto out_release;
1014
1015 ret = iwl_mvm_power_update_mac(mvm);
1016 if (ret)
1017 goto out_release;
1018
1019 /* beacon filtering */
1020 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1021 if (ret)
1022 goto out_remove_mac;
1023
1024 if (!mvm->bf_allowed_vif &&
1025 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1026 mvm->bf_allowed_vif = mvmvif;
1027 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1028 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1029 }
1030
1031 /*
1032 * P2P_DEVICE interface does not have a channel context assigned to it,
1033 * so a dedicated PHY context is allocated to it and the corresponding
1034 * MAC context is bound to it at this stage.
1035 */
1036 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1037
1038 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1039 if (!mvmvif->phy_ctxt) {
1040 ret = -ENOSPC;
1041 goto out_free_bf;
1042 }
1043
1044 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1045 ret = iwl_mvm_binding_add_vif(mvm, vif);
1046 if (ret)
1047 goto out_unref_phy;
1048
1049 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1050 if (ret)
1051 goto out_unbind;
1052
1053 /* Save a pointer to p2p device vif, so it can later be used to
1054 * update the p2p device MAC when a GO is started/stopped */
1055 mvm->p2p_device_vif = vif;
1056 }
1057
1058 iwl_mvm_vif_dbgfs_register(mvm, vif);
1059 goto out_unlock;
1060
1061 out_unbind:
1062 iwl_mvm_binding_remove_vif(mvm, vif);
1063 out_unref_phy:
1064 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1065 out_free_bf:
1066 if (mvm->bf_allowed_vif == mvmvif) {
1067 mvm->bf_allowed_vif = NULL;
1068 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1069 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1070 }
1071 out_remove_mac:
1072 mvmvif->phy_ctxt = NULL;
1073 iwl_mvm_mac_ctxt_remove(mvm, vif);
1074 out_release:
1075 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1076 mvm->vif_count--;
1077
1078 iwl_mvm_mac_ctxt_release(mvm, vif);
1079 out_unlock:
1080 mutex_unlock(&mvm->mutex);
1081
1082 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1083
1084 return ret;
1085 }
1086
1087 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1088 struct ieee80211_vif *vif)
1089 {
1090 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(mvm, vif);
1091
1092 if (tfd_msk) {
1093 mutex_lock(&mvm->mutex);
1094 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1095 mutex_unlock(&mvm->mutex);
1096 }
1097
1098 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1099 /*
1100 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1101 * We assume here that all the packets sent to the OFFCHANNEL
1102 * queue are sent in ROC session.
1103 */
1104 flush_work(&mvm->roc_done_wk);
1105 } else {
1106 /*
1107 * By now, all the AC queues are empty. The AGG queues are
1108 * empty too. We already got all the Tx responses for all the
1109 * packets in the queues. The drain work can have been
1110 * triggered. Flush it.
1111 */
1112 flush_work(&mvm->sta_drained_wk);
1113 }
1114 }
1115
1116 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1117 struct ieee80211_vif *vif)
1118 {
1119 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1120 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1121
1122 iwl_mvm_prepare_mac_removal(mvm, vif);
1123
1124 mutex_lock(&mvm->mutex);
1125
1126 if (mvm->bf_allowed_vif == mvmvif) {
1127 mvm->bf_allowed_vif = NULL;
1128 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1129 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1130 }
1131
1132 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1133
1134 /*
1135 * For AP/GO interface, the tear down of the resources allocated to the
1136 * interface is be handled as part of the stop_ap flow.
1137 */
1138 if (vif->type == NL80211_IFTYPE_AP ||
1139 vif->type == NL80211_IFTYPE_ADHOC) {
1140 #ifdef CONFIG_NL80211_TESTMODE
1141 if (vif == mvm->noa_vif) {
1142 mvm->noa_vif = NULL;
1143 mvm->noa_duration = 0;
1144 }
1145 #endif
1146 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1147 goto out_release;
1148 }
1149
1150 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1151 mvm->p2p_device_vif = NULL;
1152 iwl_mvm_rm_bcast_sta(mvm, vif);
1153 iwl_mvm_binding_remove_vif(mvm, vif);
1154 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1155 mvmvif->phy_ctxt = NULL;
1156 }
1157
1158 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1159 mvm->vif_count--;
1160
1161 iwl_mvm_power_update_mac(mvm);
1162 iwl_mvm_mac_ctxt_remove(mvm, vif);
1163
1164 out_release:
1165 iwl_mvm_mac_ctxt_release(mvm, vif);
1166 mutex_unlock(&mvm->mutex);
1167 }
1168
1169 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1170 {
1171 return 0;
1172 }
1173
1174 struct iwl_mvm_mc_iter_data {
1175 struct iwl_mvm *mvm;
1176 int port_id;
1177 };
1178
1179 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1180 struct ieee80211_vif *vif)
1181 {
1182 struct iwl_mvm_mc_iter_data *data = _data;
1183 struct iwl_mvm *mvm = data->mvm;
1184 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1185 int ret, len;
1186
1187 /* if we don't have free ports, mcast frames will be dropped */
1188 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1189 return;
1190
1191 if (vif->type != NL80211_IFTYPE_STATION ||
1192 !vif->bss_conf.assoc)
1193 return;
1194
1195 cmd->port_id = data->port_id++;
1196 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1197 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1198
1199 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1200 if (ret)
1201 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1202 }
1203
1204 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1205 {
1206 struct iwl_mvm_mc_iter_data iter_data = {
1207 .mvm = mvm,
1208 };
1209
1210 lockdep_assert_held(&mvm->mutex);
1211
1212 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1213 return;
1214
1215 ieee80211_iterate_active_interfaces_atomic(
1216 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1217 iwl_mvm_mc_iface_iterator, &iter_data);
1218 }
1219
1220 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1221 struct netdev_hw_addr_list *mc_list)
1222 {
1223 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1224 struct iwl_mcast_filter_cmd *cmd;
1225 struct netdev_hw_addr *addr;
1226 int addr_count;
1227 bool pass_all;
1228 int len;
1229
1230 addr_count = netdev_hw_addr_list_count(mc_list);
1231 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1232 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1233 if (pass_all)
1234 addr_count = 0;
1235
1236 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1237 cmd = kzalloc(len, GFP_ATOMIC);
1238 if (!cmd)
1239 return 0;
1240
1241 if (pass_all) {
1242 cmd->pass_all = 1;
1243 return (u64)(unsigned long)cmd;
1244 }
1245
1246 netdev_hw_addr_list_for_each(addr, mc_list) {
1247 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1248 cmd->count, addr->addr);
1249 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1250 addr->addr, ETH_ALEN);
1251 cmd->count++;
1252 }
1253
1254 return (u64)(unsigned long)cmd;
1255 }
1256
1257 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1258 unsigned int changed_flags,
1259 unsigned int *total_flags,
1260 u64 multicast)
1261 {
1262 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1263 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1264
1265 mutex_lock(&mvm->mutex);
1266
1267 /* replace previous configuration */
1268 kfree(mvm->mcast_filter_cmd);
1269 mvm->mcast_filter_cmd = cmd;
1270
1271 if (!cmd)
1272 goto out;
1273
1274 iwl_mvm_recalc_multicast(mvm);
1275 out:
1276 mutex_unlock(&mvm->mutex);
1277 *total_flags = 0;
1278 }
1279
1280 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1281 struct iwl_bcast_iter_data {
1282 struct iwl_mvm *mvm;
1283 struct iwl_bcast_filter_cmd *cmd;
1284 u8 current_filter;
1285 };
1286
1287 static void
1288 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1289 const struct iwl_fw_bcast_filter *in_filter,
1290 struct iwl_fw_bcast_filter *out_filter)
1291 {
1292 struct iwl_fw_bcast_filter_attr *attr;
1293 int i;
1294
1295 memcpy(out_filter, in_filter, sizeof(*out_filter));
1296
1297 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1298 attr = &out_filter->attrs[i];
1299
1300 if (!attr->mask)
1301 break;
1302
1303 switch (attr->reserved1) {
1304 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1305 if (vif->bss_conf.arp_addr_cnt != 1) {
1306 attr->mask = 0;
1307 continue;
1308 }
1309
1310 attr->val = vif->bss_conf.arp_addr_list[0];
1311 break;
1312 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1313 attr->val = *(__be32 *)&vif->addr[2];
1314 break;
1315 default:
1316 break;
1317 }
1318 attr->reserved1 = 0;
1319 out_filter->num_attrs++;
1320 }
1321 }
1322
1323 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1324 struct ieee80211_vif *vif)
1325 {
1326 struct iwl_bcast_iter_data *data = _data;
1327 struct iwl_mvm *mvm = data->mvm;
1328 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1329 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1330 struct iwl_fw_bcast_mac *bcast_mac;
1331 int i;
1332
1333 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1334 return;
1335
1336 bcast_mac = &cmd->macs[mvmvif->id];
1337
1338 /*
1339 * enable filtering only for associated stations, but not for P2P
1340 * Clients
1341 */
1342 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1343 !vif->bss_conf.assoc)
1344 return;
1345
1346 bcast_mac->default_discard = 1;
1347
1348 /* copy all configured filters */
1349 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1350 /*
1351 * Make sure we don't exceed our filters limit.
1352 * if there is still a valid filter to be configured,
1353 * be on the safe side and just allow bcast for this mac.
1354 */
1355 if (WARN_ON_ONCE(data->current_filter >=
1356 ARRAY_SIZE(cmd->filters))) {
1357 bcast_mac->default_discard = 0;
1358 bcast_mac->attached_filters = 0;
1359 break;
1360 }
1361
1362 iwl_mvm_set_bcast_filter(vif,
1363 &mvm->bcast_filters[i],
1364 &cmd->filters[data->current_filter]);
1365
1366 /* skip current filter if it contains no attributes */
1367 if (!cmd->filters[data->current_filter].num_attrs)
1368 continue;
1369
1370 /* attach the filter to current mac */
1371 bcast_mac->attached_filters |=
1372 cpu_to_le16(BIT(data->current_filter));
1373
1374 data->current_filter++;
1375 }
1376 }
1377
1378 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1379 struct iwl_bcast_filter_cmd *cmd)
1380 {
1381 struct iwl_bcast_iter_data iter_data = {
1382 .mvm = mvm,
1383 .cmd = cmd,
1384 };
1385
1386 memset(cmd, 0, sizeof(*cmd));
1387 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1388 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1389
1390 #ifdef CONFIG_IWLWIFI_DEBUGFS
1391 /* use debugfs filters/macs if override is configured */
1392 if (mvm->dbgfs_bcast_filtering.override) {
1393 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1394 sizeof(cmd->filters));
1395 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1396 sizeof(cmd->macs));
1397 return true;
1398 }
1399 #endif
1400
1401 /* if no filters are configured, do nothing */
1402 if (!mvm->bcast_filters)
1403 return false;
1404
1405 /* configure and attach these filters for each associated sta vif */
1406 ieee80211_iterate_active_interfaces(
1407 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1408 iwl_mvm_bcast_filter_iterator, &iter_data);
1409
1410 return true;
1411 }
1412 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1413 struct ieee80211_vif *vif)
1414 {
1415 struct iwl_bcast_filter_cmd cmd;
1416
1417 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1418 return 0;
1419
1420 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1421 return 0;
1422
1423 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1424 sizeof(cmd), &cmd);
1425 }
1426 #else
1427 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1428 struct ieee80211_vif *vif)
1429 {
1430 return 0;
1431 }
1432 #endif
1433
1434 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1435 struct ieee80211_vif *vif,
1436 struct ieee80211_bss_conf *bss_conf,
1437 u32 changes)
1438 {
1439 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1440 int ret;
1441
1442 /*
1443 * Re-calculate the tsf id, as the master-slave relations depend on the
1444 * beacon interval, which was not known when the station interface was
1445 * added.
1446 */
1447 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1448 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1449
1450 /*
1451 * If we're not associated yet, take the (new) BSSID before associating
1452 * so the firmware knows. If we're already associated, then use the old
1453 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1454 * branch for disassociation below.
1455 */
1456 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1457 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1458
1459 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1460 if (ret)
1461 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1462
1463 /* after sending it once, adopt mac80211 data */
1464 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1465 mvmvif->associated = bss_conf->assoc;
1466
1467 if (changes & BSS_CHANGED_ASSOC) {
1468 if (bss_conf->assoc) {
1469 /* add quota for this interface */
1470 ret = iwl_mvm_update_quotas(mvm, NULL);
1471 if (ret) {
1472 IWL_ERR(mvm, "failed to update quotas\n");
1473 return;
1474 }
1475
1476 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1477 &mvm->status)) {
1478 /*
1479 * If we're restarting then the firmware will
1480 * obviously have lost synchronisation with
1481 * the AP. It will attempt to synchronise by
1482 * itself, but we can make it more reliable by
1483 * scheduling a session protection time event.
1484 *
1485 * The firmware needs to receive a beacon to
1486 * catch up with synchronisation, use 110% of
1487 * the beacon interval.
1488 *
1489 * Set a large maximum delay to allow for more
1490 * than a single interface.
1491 */
1492 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1493 iwl_mvm_protect_session(mvm, vif, dur, dur,
1494 5 * dur, false);
1495 }
1496
1497 iwl_mvm_sf_update(mvm, vif, false);
1498 iwl_mvm_power_vif_assoc(mvm, vif);
1499 if (vif->p2p) {
1500 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1501 iwl_mvm_update_smps(mvm, vif,
1502 IWL_MVM_SMPS_REQ_PROT,
1503 IEEE80211_SMPS_DYNAMIC);
1504 }
1505 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1506 /*
1507 * If update fails - SF might be running in associated
1508 * mode while disassociated - which is forbidden.
1509 */
1510 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1511 "Failed to update SF upon disassociation\n");
1512
1513 /* remove AP station now that the MAC is unassoc */
1514 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1515 if (ret)
1516 IWL_ERR(mvm, "failed to remove AP station\n");
1517
1518 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1519 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1520 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1521 /* remove quota for this interface */
1522 ret = iwl_mvm_update_quotas(mvm, NULL);
1523 if (ret)
1524 IWL_ERR(mvm, "failed to update quotas\n");
1525
1526 if (vif->p2p)
1527 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1528
1529 /* this will take the cleared BSSID from bss_conf */
1530 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1531 if (ret)
1532 IWL_ERR(mvm,
1533 "failed to update MAC %pM (clear after unassoc)\n",
1534 vif->addr);
1535 }
1536
1537 iwl_mvm_recalc_multicast(mvm);
1538 iwl_mvm_configure_bcast_filter(mvm, vif);
1539
1540 /* reset rssi values */
1541 mvmvif->bf_data.ave_beacon_signal = 0;
1542
1543 iwl_mvm_bt_coex_vif_change(mvm);
1544 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1545 IEEE80211_SMPS_AUTOMATIC);
1546 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1547 /*
1548 * We received a beacon _after_ association so
1549 * remove the session protection.
1550 */
1551 iwl_mvm_remove_time_event(mvm, mvmvif,
1552 &mvmvif->time_event_data);
1553 }
1554
1555 if (changes & BSS_CHANGED_BEACON_INFO) {
1556 iwl_mvm_sf_update(mvm, vif, false);
1557 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1558 }
1559
1560 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1561 ret = iwl_mvm_power_update_mac(mvm);
1562 if (ret)
1563 IWL_ERR(mvm, "failed to update power mode\n");
1564 }
1565
1566 if (changes & BSS_CHANGED_TXPOWER) {
1567 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1568 bss_conf->txpower);
1569 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1570 }
1571
1572 if (changes & BSS_CHANGED_CQM) {
1573 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1574 /* reset cqm events tracking */
1575 mvmvif->bf_data.last_cqm_event = 0;
1576 if (mvmvif->bf_data.bf_enabled) {
1577 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1578 if (ret)
1579 IWL_ERR(mvm,
1580 "failed to update CQM thresholds\n");
1581 }
1582 }
1583
1584 if (changes & BSS_CHANGED_ARP_FILTER) {
1585 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1586 iwl_mvm_configure_bcast_filter(mvm, vif);
1587 }
1588 }
1589
1590 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1591 struct ieee80211_vif *vif)
1592 {
1593 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1594 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1595 int ret;
1596
1597 /*
1598 * iwl_mvm_mac_ctxt_add() might read directly from the device
1599 * (the system time), so make sure it is available.
1600 */
1601 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1602 if (ret)
1603 return ret;
1604
1605 mutex_lock(&mvm->mutex);
1606
1607 /* Send the beacon template */
1608 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1609 if (ret)
1610 goto out_unlock;
1611
1612 /*
1613 * Re-calculate the tsf id, as the master-slave relations depend on the
1614 * beacon interval, which was not known when the AP interface was added.
1615 */
1616 if (vif->type == NL80211_IFTYPE_AP)
1617 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1618
1619 /* Add the mac context */
1620 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1621 if (ret)
1622 goto out_unlock;
1623
1624 /* Perform the binding */
1625 ret = iwl_mvm_binding_add_vif(mvm, vif);
1626 if (ret)
1627 goto out_remove;
1628
1629 /* Send the bcast station. At this stage the TBTT and DTIM time events
1630 * are added and applied to the scheduler */
1631 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1632 if (ret)
1633 goto out_unbind;
1634
1635 /* must be set before quota calculations */
1636 mvmvif->ap_ibss_active = true;
1637
1638 /* power updated needs to be done before quotas */
1639 iwl_mvm_power_update_mac(mvm);
1640
1641 ret = iwl_mvm_update_quotas(mvm, NULL);
1642 if (ret)
1643 goto out_quota_failed;
1644
1645 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1646 if (vif->p2p && mvm->p2p_device_vif)
1647 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1648
1649 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1650
1651 iwl_mvm_bt_coex_vif_change(mvm);
1652
1653 /* we don't support TDLS during DCM */
1654 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1655 iwl_mvm_teardown_tdls_peers(mvm);
1656
1657 mutex_unlock(&mvm->mutex);
1658 return 0;
1659
1660 out_quota_failed:
1661 iwl_mvm_power_update_mac(mvm);
1662 mvmvif->ap_ibss_active = false;
1663 iwl_mvm_send_rm_bcast_sta(mvm, vif);
1664 out_unbind:
1665 iwl_mvm_binding_remove_vif(mvm, vif);
1666 out_remove:
1667 iwl_mvm_mac_ctxt_remove(mvm, vif);
1668 out_unlock:
1669 mutex_unlock(&mvm->mutex);
1670 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
1671 return ret;
1672 }
1673
1674 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1675 struct ieee80211_vif *vif)
1676 {
1677 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1678 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1679
1680 iwl_mvm_prepare_mac_removal(mvm, vif);
1681
1682 mutex_lock(&mvm->mutex);
1683
1684 /* Handle AP stop while in CSA */
1685 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1686 iwl_mvm_remove_time_event(mvm, mvmvif,
1687 &mvmvif->time_event_data);
1688 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1689 }
1690
1691 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1692 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1693 mvm->csa_tx_block_bcn_timeout = 0;
1694 }
1695
1696 mvmvif->ap_ibss_active = false;
1697 mvm->ap_last_beacon_gp2 = 0;
1698
1699 iwl_mvm_bt_coex_vif_change(mvm);
1700
1701 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1702
1703 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1704 if (vif->p2p && mvm->p2p_device_vif)
1705 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1706
1707 iwl_mvm_update_quotas(mvm, NULL);
1708 iwl_mvm_send_rm_bcast_sta(mvm, vif);
1709 iwl_mvm_binding_remove_vif(mvm, vif);
1710
1711 iwl_mvm_power_update_mac(mvm);
1712
1713 iwl_mvm_mac_ctxt_remove(mvm, vif);
1714
1715 mutex_unlock(&mvm->mutex);
1716 }
1717
1718 static void
1719 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1720 struct ieee80211_vif *vif,
1721 struct ieee80211_bss_conf *bss_conf,
1722 u32 changes)
1723 {
1724 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1725
1726 /* Changes will be applied when the AP/IBSS is started */
1727 if (!mvmvif->ap_ibss_active)
1728 return;
1729
1730 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1731 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
1732 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
1733 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1734
1735 /* Need to send a new beacon template to the FW */
1736 if (changes & BSS_CHANGED_BEACON &&
1737 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1738 IWL_WARN(mvm, "Failed updating beacon data\n");
1739
1740 if (changes & BSS_CHANGED_TXPOWER) {
1741 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1742 bss_conf->txpower);
1743 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1744 }
1745
1746 }
1747
1748 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1749 struct ieee80211_vif *vif,
1750 struct ieee80211_bss_conf *bss_conf,
1751 u32 changes)
1752 {
1753 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1754
1755 /*
1756 * iwl_mvm_bss_info_changed_station() might call
1757 * iwl_mvm_protect_session(), which reads directly from
1758 * the device (the system time), so make sure it is available.
1759 */
1760 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1761 return;
1762
1763 mutex_lock(&mvm->mutex);
1764
1765 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
1766 iwl_mvm_scan_offload_stop(mvm, true);
1767
1768 switch (vif->type) {
1769 case NL80211_IFTYPE_STATION:
1770 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1771 break;
1772 case NL80211_IFTYPE_AP:
1773 case NL80211_IFTYPE_ADHOC:
1774 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1775 break;
1776 default:
1777 /* shouldn't happen */
1778 WARN_ON_ONCE(1);
1779 }
1780
1781 mutex_unlock(&mvm->mutex);
1782 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
1783 }
1784
1785 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1786 enum iwl_scan_status scan_type)
1787 {
1788 int ret;
1789 bool wait_for_handlers = false;
1790
1791 mutex_lock(&mvm->mutex);
1792
1793 if (mvm->scan_status != scan_type) {
1794 ret = 0;
1795 /* make sure there are no pending notifications */
1796 wait_for_handlers = true;
1797 goto out;
1798 }
1799
1800 switch (scan_type) {
1801 case IWL_MVM_SCAN_SCHED:
1802 ret = iwl_mvm_scan_offload_stop(mvm, true);
1803 break;
1804 case IWL_MVM_SCAN_OS:
1805 ret = iwl_mvm_cancel_scan(mvm);
1806 break;
1807 case IWL_MVM_SCAN_NONE:
1808 default:
1809 WARN_ON_ONCE(1);
1810 ret = -EINVAL;
1811 break;
1812 }
1813 if (ret)
1814 goto out;
1815
1816 wait_for_handlers = true;
1817 out:
1818 mutex_unlock(&mvm->mutex);
1819
1820 /* make sure we consume the completion notification */
1821 if (wait_for_handlers)
1822 iwl_mvm_wait_for_async_handlers(mvm);
1823
1824 return ret;
1825 }
1826 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1827 struct ieee80211_vif *vif,
1828 struct ieee80211_scan_request *hw_req)
1829 {
1830 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1831 struct cfg80211_scan_request *req = &hw_req->req;
1832 int ret;
1833
1834 if (req->n_channels == 0 ||
1835 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1836 return -EINVAL;
1837
1838 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1839 if (ret)
1840 return ret;
1841
1842 mutex_lock(&mvm->mutex);
1843
1844 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1845 ret = -EBUSY;
1846 goto out;
1847 }
1848
1849 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1850
1851 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1852 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1853 else
1854 ret = iwl_mvm_scan_request(mvm, vif, req);
1855
1856 if (ret)
1857 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1858 out:
1859 mutex_unlock(&mvm->mutex);
1860 return ret;
1861 }
1862
1863 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1864 struct ieee80211_vif *vif)
1865 {
1866 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1867
1868 mutex_lock(&mvm->mutex);
1869
1870 iwl_mvm_cancel_scan(mvm);
1871
1872 mutex_unlock(&mvm->mutex);
1873 }
1874
1875 static void
1876 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1877 struct ieee80211_sta *sta, u16 tids,
1878 int num_frames,
1879 enum ieee80211_frame_release_type reason,
1880 bool more_data)
1881 {
1882 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1883
1884 /* Called when we need to transmit (a) frame(s) from mac80211 */
1885
1886 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1887 tids, more_data, false);
1888 }
1889
1890 static void
1891 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1892 struct ieee80211_sta *sta, u16 tids,
1893 int num_frames,
1894 enum ieee80211_frame_release_type reason,
1895 bool more_data)
1896 {
1897 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1898
1899 /* Called when we need to transmit (a) frame(s) from agg queue */
1900
1901 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1902 tids, more_data, true);
1903 }
1904
1905 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1906 struct ieee80211_vif *vif,
1907 enum sta_notify_cmd cmd,
1908 struct ieee80211_sta *sta)
1909 {
1910 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1911 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1912 int tid;
1913
1914 switch (cmd) {
1915 case STA_NOTIFY_SLEEP:
1916 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
1917 ieee80211_sta_block_awake(hw, sta, true);
1918 spin_lock_bh(&mvmsta->lock);
1919 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1920 struct iwl_mvm_tid_data *tid_data;
1921
1922 tid_data = &mvmsta->tid_data[tid];
1923 if (tid_data->state != IWL_AGG_ON &&
1924 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
1925 continue;
1926 if (iwl_mvm_tid_queued(tid_data) == 0)
1927 continue;
1928 ieee80211_sta_set_buffered(sta, tid, true);
1929 }
1930 spin_unlock_bh(&mvmsta->lock);
1931 /*
1932 * The fw updates the STA to be asleep. Tx packets on the Tx
1933 * queues to this station will not be transmitted. The fw will
1934 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1935 */
1936 break;
1937 case STA_NOTIFY_AWAKE:
1938 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1939 break;
1940 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1941 break;
1942 default:
1943 break;
1944 }
1945 }
1946
1947 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1948 struct ieee80211_vif *vif,
1949 struct ieee80211_sta *sta)
1950 {
1951 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1952 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1953
1954 /*
1955 * This is called before mac80211 does RCU synchronisation,
1956 * so here we already invalidate our internal RCU-protected
1957 * station pointer. The rest of the code will thus no longer
1958 * be able to find the station this way, and we don't rely
1959 * on further RCU synchronisation after the sta_state()
1960 * callback deleted the station.
1961 */
1962 mutex_lock(&mvm->mutex);
1963 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1964 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1965 ERR_PTR(-ENOENT));
1966 mutex_unlock(&mvm->mutex);
1967 }
1968
1969 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1970 struct ieee80211_vif *vif,
1971 struct ieee80211_sta *sta,
1972 enum ieee80211_sta_state old_state,
1973 enum ieee80211_sta_state new_state)
1974 {
1975 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1976 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1977 int ret;
1978
1979 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1980 sta->addr, old_state, new_state);
1981
1982 /* this would be a mac80211 bug ... but don't crash */
1983 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1984 return -EINVAL;
1985
1986 /* if a STA is being removed, reuse its ID */
1987 flush_work(&mvm->sta_drained_wk);
1988
1989 mutex_lock(&mvm->mutex);
1990 if (old_state == IEEE80211_STA_NOTEXIST &&
1991 new_state == IEEE80211_STA_NONE) {
1992 /*
1993 * Firmware bug - it'll crash if the beacon interval is less
1994 * than 16. We can't avoid connecting at all, so refuse the
1995 * station state change, this will cause mac80211 to abandon
1996 * attempts to connect to this AP, and eventually wpa_s will
1997 * blacklist the AP...
1998 */
1999 if (vif->type == NL80211_IFTYPE_STATION &&
2000 vif->bss_conf.beacon_int < 16) {
2001 IWL_ERR(mvm,
2002 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2003 sta->addr, vif->bss_conf.beacon_int);
2004 ret = -EINVAL;
2005 goto out_unlock;
2006 }
2007
2008 if (sta->tdls &&
2009 (vif->p2p ||
2010 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2011 IWL_MVM_TDLS_STA_COUNT ||
2012 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2013 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2014 ret = -EBUSY;
2015 goto out_unlock;
2016 }
2017
2018 ret = iwl_mvm_add_sta(mvm, vif, sta);
2019 if (sta->tdls && ret == 0)
2020 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2021 } else if (old_state == IEEE80211_STA_NONE &&
2022 new_state == IEEE80211_STA_AUTH) {
2023 /*
2024 * EBS may be disabled due to previous failures reported by FW.
2025 * Reset EBS status here assuming environment has been changed.
2026 */
2027 mvm->last_ebs_successful = true;
2028 ret = 0;
2029 } else if (old_state == IEEE80211_STA_AUTH &&
2030 new_state == IEEE80211_STA_ASSOC) {
2031 ret = iwl_mvm_update_sta(mvm, vif, sta);
2032 if (ret == 0)
2033 iwl_mvm_rs_rate_init(mvm, sta,
2034 mvmvif->phy_ctxt->channel->band,
2035 true);
2036 } else if (old_state == IEEE80211_STA_ASSOC &&
2037 new_state == IEEE80211_STA_AUTHORIZED) {
2038
2039 /* we don't support TDLS during DCM */
2040 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2041 iwl_mvm_teardown_tdls_peers(mvm);
2042
2043 /* enable beacon filtering */
2044 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2045 ret = 0;
2046 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2047 new_state == IEEE80211_STA_ASSOC) {
2048 /* disable beacon filtering */
2049 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2050 ret = 0;
2051 } else if (old_state == IEEE80211_STA_ASSOC &&
2052 new_state == IEEE80211_STA_AUTH) {
2053 ret = 0;
2054 } else if (old_state == IEEE80211_STA_AUTH &&
2055 new_state == IEEE80211_STA_NONE) {
2056 ret = 0;
2057 } else if (old_state == IEEE80211_STA_NONE &&
2058 new_state == IEEE80211_STA_NOTEXIST) {
2059 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2060 if (sta->tdls)
2061 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2062 } else {
2063 ret = -EIO;
2064 }
2065 out_unlock:
2066 mutex_unlock(&mvm->mutex);
2067
2068 return ret;
2069 }
2070
2071 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2072 {
2073 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2074
2075 mvm->rts_threshold = value;
2076
2077 return 0;
2078 }
2079
2080 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2081 struct ieee80211_vif *vif,
2082 struct ieee80211_sta *sta, u32 changed)
2083 {
2084 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2085
2086 if (vif->type == NL80211_IFTYPE_STATION &&
2087 changed & IEEE80211_RC_NSS_CHANGED)
2088 iwl_mvm_sf_update(mvm, vif, false);
2089 }
2090
2091 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2092 struct ieee80211_vif *vif, u16 ac,
2093 const struct ieee80211_tx_queue_params *params)
2094 {
2095 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2096 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2097
2098 mvmvif->queue_params[ac] = *params;
2099
2100 /*
2101 * No need to update right away, we'll get BSS_CHANGED_QOS
2102 * The exception is P2P_DEVICE interface which needs immediate update.
2103 */
2104 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2105 int ret;
2106
2107 mutex_lock(&mvm->mutex);
2108 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2109 mutex_unlock(&mvm->mutex);
2110 return ret;
2111 }
2112 return 0;
2113 }
2114
2115 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2116 struct ieee80211_vif *vif)
2117 {
2118 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2119 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2120 200 + vif->bss_conf.beacon_int);
2121 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2122 100 + vif->bss_conf.beacon_int);
2123
2124 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2125 return;
2126
2127 /*
2128 * iwl_mvm_protect_session() reads directly from the device
2129 * (the system time), so make sure it is available.
2130 */
2131 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2132 return;
2133
2134 mutex_lock(&mvm->mutex);
2135 /* Try really hard to protect the session and hear a beacon */
2136 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2137 mutex_unlock(&mvm->mutex);
2138
2139 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2140 }
2141
2142 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2143 struct ieee80211_vif *vif,
2144 struct cfg80211_sched_scan_request *req,
2145 struct ieee80211_scan_ies *ies)
2146 {
2147 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2148 int ret;
2149
2150 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2151 if (ret)
2152 return ret;
2153
2154 mutex_lock(&mvm->mutex);
2155
2156 /* Newest FW fixes sched scan while connected on another interface */
2157 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2158 if (!vif->bss_conf.idle) {
2159 ret = -EBUSY;
2160 goto out;
2161 }
2162 } else if (!iwl_mvm_is_idle(mvm)) {
2163 ret = -EBUSY;
2164 goto out;
2165 }
2166
2167 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2168 ret = -EBUSY;
2169 goto out;
2170 }
2171
2172 mvm->scan_status = IWL_MVM_SCAN_SCHED;
2173
2174 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
2175 ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
2176 if (ret)
2177 goto err;
2178 }
2179
2180 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2181 if (ret)
2182 goto err;
2183
2184 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
2185 ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies);
2186 else
2187 ret = iwl_mvm_sched_scan_start(mvm, req);
2188
2189 if (!ret)
2190 goto out;
2191 err:
2192 mvm->scan_status = IWL_MVM_SCAN_NONE;
2193 out:
2194 mutex_unlock(&mvm->mutex);
2195 return ret;
2196 }
2197
2198 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2199 struct ieee80211_vif *vif)
2200 {
2201 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2202 int ret;
2203
2204 mutex_lock(&mvm->mutex);
2205 ret = iwl_mvm_scan_offload_stop(mvm, false);
2206 mutex_unlock(&mvm->mutex);
2207 iwl_mvm_wait_for_async_handlers(mvm);
2208
2209 return ret;
2210 }
2211
2212 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2213 enum set_key_cmd cmd,
2214 struct ieee80211_vif *vif,
2215 struct ieee80211_sta *sta,
2216 struct ieee80211_key_conf *key)
2217 {
2218 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2219 int ret;
2220
2221 if (iwlwifi_mod_params.sw_crypto) {
2222 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2223 return -EOPNOTSUPP;
2224 }
2225
2226 switch (key->cipher) {
2227 case WLAN_CIPHER_SUITE_TKIP:
2228 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2229 /* fall-through */
2230 case WLAN_CIPHER_SUITE_CCMP:
2231 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2232 break;
2233 case WLAN_CIPHER_SUITE_AES_CMAC:
2234 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2235 break;
2236 case WLAN_CIPHER_SUITE_WEP40:
2237 case WLAN_CIPHER_SUITE_WEP104:
2238 /*
2239 * Support for TX only, at least for now, so accept
2240 * the key and do nothing else. Then mac80211 will
2241 * pass it for TX but we don't have to use it for RX.
2242 */
2243 return 0;
2244 default:
2245 /* currently FW supports only one optional cipher scheme */
2246 if (hw->n_cipher_schemes &&
2247 hw->cipher_schemes->cipher == key->cipher)
2248 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2249 else
2250 return -EOPNOTSUPP;
2251 }
2252
2253 mutex_lock(&mvm->mutex);
2254
2255 switch (cmd) {
2256 case SET_KEY:
2257 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2258 vif->type == NL80211_IFTYPE_AP) && !sta) {
2259 /*
2260 * GTK on AP interface is a TX-only key, return 0;
2261 * on IBSS they're per-station and because we're lazy
2262 * we don't support them for RX, so do the same.
2263 */
2264 ret = 0;
2265 key->hw_key_idx = STA_KEY_IDX_INVALID;
2266 break;
2267 }
2268
2269 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2270 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2271 if (ret) {
2272 IWL_WARN(mvm, "set key failed\n");
2273 /*
2274 * can't add key for RX, but we don't need it
2275 * in the device for TX so still return 0
2276 */
2277 key->hw_key_idx = STA_KEY_IDX_INVALID;
2278 ret = 0;
2279 }
2280
2281 break;
2282 case DISABLE_KEY:
2283 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2284 ret = 0;
2285 break;
2286 }
2287
2288 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2289 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2290 break;
2291 default:
2292 ret = -EINVAL;
2293 }
2294
2295 mutex_unlock(&mvm->mutex);
2296 return ret;
2297 }
2298
2299 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2300 struct ieee80211_vif *vif,
2301 struct ieee80211_key_conf *keyconf,
2302 struct ieee80211_sta *sta,
2303 u32 iv32, u16 *phase1key)
2304 {
2305 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2306
2307 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2308 return;
2309
2310 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2311 }
2312
2313
2314 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2315 struct iwl_rx_packet *pkt, void *data)
2316 {
2317 struct iwl_mvm *mvm =
2318 container_of(notif_wait, struct iwl_mvm, notif_wait);
2319 struct iwl_hs20_roc_res *resp;
2320 int resp_len = iwl_rx_packet_payload_len(pkt);
2321 struct iwl_mvm_time_event_data *te_data = data;
2322
2323 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2324 return true;
2325
2326 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2327 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2328 return true;
2329 }
2330
2331 resp = (void *)pkt->data;
2332
2333 IWL_DEBUG_TE(mvm,
2334 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2335 resp->status, resp->event_unique_id);
2336
2337 te_data->uid = le32_to_cpu(resp->event_unique_id);
2338 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2339 te_data->uid);
2340
2341 spin_lock_bh(&mvm->time_event_lock);
2342 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2343 spin_unlock_bh(&mvm->time_event_lock);
2344
2345 return true;
2346 }
2347
2348 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2349 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2350 struct ieee80211_channel *channel,
2351 struct ieee80211_vif *vif,
2352 int duration)
2353 {
2354 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2355 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2356 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2357 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2358 struct iwl_notification_wait wait_time_event;
2359 struct iwl_hs20_roc_req aux_roc_req = {
2360 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2361 .id_and_color =
2362 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2363 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2364 /* Set the channel info data */
2365 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2366 PHY_BAND_24 : PHY_BAND_5,
2367 .channel_info.channel = channel->hw_value,
2368 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2369 /* Set the time and duration */
2370 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2371 .apply_time_max_delay =
2372 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2373 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2374 };
2375
2376 /* Set the node address */
2377 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2378
2379 lockdep_assert_held(&mvm->mutex);
2380
2381 spin_lock_bh(&mvm->time_event_lock);
2382
2383 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2384 spin_unlock_bh(&mvm->time_event_lock);
2385 return -EIO;
2386 }
2387
2388 te_data->vif = vif;
2389 te_data->duration = duration;
2390 te_data->id = HOT_SPOT_CMD;
2391
2392 spin_unlock_bh(&mvm->time_event_lock);
2393
2394 /*
2395 * Use a notification wait, which really just processes the
2396 * command response and doesn't wait for anything, in order
2397 * to be able to process the response and get the UID inside
2398 * the RX path. Using CMD_WANT_SKB doesn't work because it
2399 * stores the buffer and then wakes up this thread, by which
2400 * time another notification (that the time event started)
2401 * might already be processed unsuccessfully.
2402 */
2403 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2404 time_event_response,
2405 ARRAY_SIZE(time_event_response),
2406 iwl_mvm_rx_aux_roc, te_data);
2407
2408 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2409 &aux_roc_req);
2410
2411 if (res) {
2412 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2413 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2414 goto out_clear_te;
2415 }
2416
2417 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2418 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2419 /* should never fail */
2420 WARN_ON_ONCE(res);
2421
2422 if (res) {
2423 out_clear_te:
2424 spin_lock_bh(&mvm->time_event_lock);
2425 iwl_mvm_te_clear_data(mvm, te_data);
2426 spin_unlock_bh(&mvm->time_event_lock);
2427 }
2428
2429 return res;
2430 }
2431
2432 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2433 struct ieee80211_vif *vif,
2434 struct ieee80211_channel *channel,
2435 int duration,
2436 enum ieee80211_roc_type type)
2437 {
2438 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2439 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2440 struct cfg80211_chan_def chandef;
2441 struct iwl_mvm_phy_ctxt *phy_ctxt;
2442 int ret, i;
2443
2444 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2445 duration, type);
2446
2447 mutex_lock(&mvm->mutex);
2448
2449 switch (vif->type) {
2450 case NL80211_IFTYPE_STATION:
2451 if (mvm->fw->ucode_capa.capa[0] &
2452 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
2453 /* Use aux roc framework (HS20) */
2454 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2455 vif, duration);
2456 goto out_unlock;
2457 }
2458 IWL_ERR(mvm, "hotspot not supported\n");
2459 ret = -EINVAL;
2460 goto out_unlock;
2461 case NL80211_IFTYPE_P2P_DEVICE:
2462 /* handle below */
2463 break;
2464 default:
2465 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2466 ret = -EINVAL;
2467 goto out_unlock;
2468 }
2469
2470 for (i = 0; i < NUM_PHY_CTX; i++) {
2471 phy_ctxt = &mvm->phy_ctxts[i];
2472 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2473 continue;
2474
2475 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2476 /*
2477 * Unbind the P2P_DEVICE from the current PHY context,
2478 * and if the PHY context is not used remove it.
2479 */
2480 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2481 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2482 goto out_unlock;
2483
2484 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2485
2486 /* Bind the P2P_DEVICE to the current PHY Context */
2487 mvmvif->phy_ctxt = phy_ctxt;
2488
2489 ret = iwl_mvm_binding_add_vif(mvm, vif);
2490 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2491 goto out_unlock;
2492
2493 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2494 goto schedule_time_event;
2495 }
2496 }
2497
2498 /* Need to update the PHY context only if the ROC channel changed */
2499 if (channel == mvmvif->phy_ctxt->channel)
2500 goto schedule_time_event;
2501
2502 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2503
2504 /*
2505 * Change the PHY context configuration as it is currently referenced
2506 * only by the P2P Device MAC
2507 */
2508 if (mvmvif->phy_ctxt->ref == 1) {
2509 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2510 &chandef, 1, 1);
2511 if (ret)
2512 goto out_unlock;
2513 } else {
2514 /*
2515 * The PHY context is shared with other MACs. Need to remove the
2516 * P2P Device from the binding, allocate an new PHY context and
2517 * create a new binding
2518 */
2519 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2520 if (!phy_ctxt) {
2521 ret = -ENOSPC;
2522 goto out_unlock;
2523 }
2524
2525 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2526 1, 1);
2527 if (ret) {
2528 IWL_ERR(mvm, "Failed to change PHY context\n");
2529 goto out_unlock;
2530 }
2531
2532 /* Unbind the P2P_DEVICE from the current PHY context */
2533 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2534 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2535 goto out_unlock;
2536
2537 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2538
2539 /* Bind the P2P_DEVICE to the new allocated PHY context */
2540 mvmvif->phy_ctxt = phy_ctxt;
2541
2542 ret = iwl_mvm_binding_add_vif(mvm, vif);
2543 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2544 goto out_unlock;
2545
2546 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2547 }
2548
2549 schedule_time_event:
2550 /* Schedule the time events */
2551 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2552
2553 out_unlock:
2554 mutex_unlock(&mvm->mutex);
2555 IWL_DEBUG_MAC80211(mvm, "leave\n");
2556 return ret;
2557 }
2558
2559 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2560 {
2561 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2562
2563 IWL_DEBUG_MAC80211(mvm, "enter\n");
2564
2565 mutex_lock(&mvm->mutex);
2566 iwl_mvm_stop_p2p_roc(mvm);
2567 mutex_unlock(&mvm->mutex);
2568
2569 IWL_DEBUG_MAC80211(mvm, "leave\n");
2570 return 0;
2571 }
2572
2573 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2574 struct ieee80211_chanctx_conf *ctx)
2575 {
2576 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2577 struct iwl_mvm_phy_ctxt *phy_ctxt;
2578 int ret;
2579
2580 lockdep_assert_held(&mvm->mutex);
2581
2582 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2583
2584 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2585 if (!phy_ctxt) {
2586 ret = -ENOSPC;
2587 goto out;
2588 }
2589
2590 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2591 ctx->rx_chains_static,
2592 ctx->rx_chains_dynamic);
2593 if (ret) {
2594 IWL_ERR(mvm, "Failed to add PHY context\n");
2595 goto out;
2596 }
2597
2598 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2599 *phy_ctxt_id = phy_ctxt->id;
2600 out:
2601 return ret;
2602 }
2603
2604 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2605 struct ieee80211_chanctx_conf *ctx)
2606 {
2607 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2608 int ret;
2609
2610 mutex_lock(&mvm->mutex);
2611 ret = __iwl_mvm_add_chanctx(mvm, ctx);
2612 mutex_unlock(&mvm->mutex);
2613
2614 return ret;
2615 }
2616
2617 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2618 struct ieee80211_chanctx_conf *ctx)
2619 {
2620 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2621 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2622
2623 lockdep_assert_held(&mvm->mutex);
2624
2625 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2626 }
2627
2628 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2629 struct ieee80211_chanctx_conf *ctx)
2630 {
2631 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2632
2633 mutex_lock(&mvm->mutex);
2634 __iwl_mvm_remove_chanctx(mvm, ctx);
2635 mutex_unlock(&mvm->mutex);
2636 }
2637
2638 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2639 struct ieee80211_chanctx_conf *ctx,
2640 u32 changed)
2641 {
2642 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2643 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2644 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2645
2646 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2647 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2648 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2649 IEEE80211_CHANCTX_CHANGE_RADAR |
2650 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2651 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2652 phy_ctxt->ref, changed))
2653 return;
2654
2655 mutex_lock(&mvm->mutex);
2656 iwl_mvm_bt_coex_vif_change(mvm);
2657 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2658 ctx->rx_chains_static,
2659 ctx->rx_chains_dynamic);
2660 mutex_unlock(&mvm->mutex);
2661 }
2662
2663 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2664 struct ieee80211_vif *vif,
2665 struct ieee80211_chanctx_conf *ctx,
2666 bool switching_chanctx)
2667 {
2668 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2669 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2670 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2671 int ret;
2672
2673 lockdep_assert_held(&mvm->mutex);
2674
2675 mvmvif->phy_ctxt = phy_ctxt;
2676
2677 switch (vif->type) {
2678 case NL80211_IFTYPE_AP:
2679 /* Unless it's a CSA flow we have nothing to do here */
2680 if (vif->csa_active) {
2681 mvmvif->ap_ibss_active = true;
2682 break;
2683 }
2684 case NL80211_IFTYPE_ADHOC:
2685 /*
2686 * The AP binding flow is handled as part of the start_ap flow
2687 * (in bss_info_changed), similarly for IBSS.
2688 */
2689 ret = 0;
2690 goto out;
2691 case NL80211_IFTYPE_STATION:
2692 break;
2693 case NL80211_IFTYPE_MONITOR:
2694 /* always disable PS when a monitor interface is active */
2695 mvmvif->ps_disabled = true;
2696 break;
2697 default:
2698 ret = -EINVAL;
2699 goto out;
2700 }
2701
2702 ret = iwl_mvm_binding_add_vif(mvm, vif);
2703 if (ret)
2704 goto out;
2705
2706 /*
2707 * Power state must be updated before quotas,
2708 * otherwise fw will complain.
2709 */
2710 iwl_mvm_power_update_mac(mvm);
2711
2712 /* Setting the quota at this stage is only required for monitor
2713 * interfaces. For the other types, the bss_info changed flow
2714 * will handle quota settings.
2715 */
2716 if (vif->type == NL80211_IFTYPE_MONITOR) {
2717 mvmvif->monitor_active = true;
2718 ret = iwl_mvm_update_quotas(mvm, NULL);
2719 if (ret)
2720 goto out_remove_binding;
2721 }
2722
2723 /* Handle binding during CSA */
2724 if ((vif->type == NL80211_IFTYPE_AP) ||
2725 (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) {
2726 iwl_mvm_update_quotas(mvm, NULL);
2727 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2728 }
2729
2730 if (vif->csa_active && vif->type == NL80211_IFTYPE_STATION) {
2731 struct iwl_mvm_sta *mvmsta;
2732
2733 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
2734 mvmvif->ap_sta_id);
2735
2736 if (WARN_ON(!mvmsta))
2737 goto out;
2738
2739 /* TODO: only re-enable after the first beacon */
2740 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
2741 }
2742
2743 goto out;
2744
2745 out_remove_binding:
2746 iwl_mvm_binding_remove_vif(mvm, vif);
2747 iwl_mvm_power_update_mac(mvm);
2748 out:
2749 if (ret)
2750 mvmvif->phy_ctxt = NULL;
2751 return ret;
2752 }
2753 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2754 struct ieee80211_vif *vif,
2755 struct ieee80211_chanctx_conf *ctx)
2756 {
2757 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2758 int ret;
2759
2760 mutex_lock(&mvm->mutex);
2761 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
2762 mutex_unlock(&mvm->mutex);
2763
2764 return ret;
2765 }
2766
2767 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2768 struct ieee80211_vif *vif,
2769 struct ieee80211_chanctx_conf *ctx,
2770 bool switching_chanctx)
2771 {
2772 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2773 struct ieee80211_vif *disabled_vif = NULL;
2774 struct iwl_mvm_sta *mvmsta;
2775
2776 lockdep_assert_held(&mvm->mutex);
2777
2778 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2779
2780 switch (vif->type) {
2781 case NL80211_IFTYPE_ADHOC:
2782 goto out;
2783 case NL80211_IFTYPE_MONITOR:
2784 mvmvif->monitor_active = false;
2785 mvmvif->ps_disabled = false;
2786 break;
2787 case NL80211_IFTYPE_AP:
2788 /* This part is triggered only during CSA */
2789 if (!vif->csa_active || !mvmvif->ap_ibss_active)
2790 goto out;
2791
2792 /* Set CS bit on all the stations */
2793 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2794
2795 /* Save blocked iface, the timeout is set on the next beacon */
2796 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2797
2798 mvmvif->ap_ibss_active = false;
2799 break;
2800 case NL80211_IFTYPE_STATION:
2801 if (!switching_chanctx)
2802 break;
2803
2804 disabled_vif = vif;
2805
2806 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
2807 mvmvif->ap_sta_id);
2808
2809 if (!WARN_ON(!mvmsta))
2810 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
2811
2812 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
2813 break;
2814 default:
2815 break;
2816 }
2817
2818 iwl_mvm_update_quotas(mvm, disabled_vif);
2819 iwl_mvm_binding_remove_vif(mvm, vif);
2820
2821 out:
2822 mvmvif->phy_ctxt = NULL;
2823 iwl_mvm_power_update_mac(mvm);
2824 }
2825
2826 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2827 struct ieee80211_vif *vif,
2828 struct ieee80211_chanctx_conf *ctx)
2829 {
2830 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2831
2832 mutex_lock(&mvm->mutex);
2833 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
2834 mutex_unlock(&mvm->mutex);
2835 }
2836
2837 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
2838 struct ieee80211_vif_chanctx_switch *vifs,
2839 int n_vifs,
2840 enum ieee80211_chanctx_switch_mode mode)
2841 {
2842 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2843 int ret;
2844
2845 /* we only support SWAP_CONTEXTS and with a single-vif right now */
2846 if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1)
2847 return -EOPNOTSUPP;
2848
2849 mutex_lock(&mvm->mutex);
2850 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
2851 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2852
2853 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2854 if (ret) {
2855 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2856 goto out_reassign;
2857 }
2858
2859 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2860 true);
2861 if (ret) {
2862 IWL_ERR(mvm,
2863 "failed to assign new_ctx during channel switch\n");
2864 goto out_remove;
2865 }
2866
2867 /* we don't support TDLS during DCM - can be caused by channel switch */
2868 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2869 iwl_mvm_teardown_tdls_peers(mvm);
2870
2871 goto out;
2872
2873 out_remove:
2874 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
2875
2876 out_reassign:
2877 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx);
2878 if (ret) {
2879 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
2880 goto out_restart;
2881 }
2882
2883 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
2884 true);
2885 if (ret) {
2886 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
2887 goto out_restart;
2888 }
2889
2890 goto out;
2891
2892 out_restart:
2893 /* things keep failing, better restart the hw */
2894 iwl_mvm_nic_restart(mvm, false);
2895
2896 out:
2897 mutex_unlock(&mvm->mutex);
2898 return ret;
2899 }
2900
2901 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2902 struct ieee80211_sta *sta,
2903 bool set)
2904 {
2905 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2906 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2907
2908 if (!mvm_sta || !mvm_sta->vif) {
2909 IWL_ERR(mvm, "Station is not associated to a vif\n");
2910 return -EINVAL;
2911 }
2912
2913 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2914 }
2915
2916 #ifdef CONFIG_NL80211_TESTMODE
2917 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2918 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2919 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
2920 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
2921 };
2922
2923 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
2924 struct ieee80211_vif *vif,
2925 void *data, int len)
2926 {
2927 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
2928 int err;
2929 u32 noa_duration;
2930
2931 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
2932 if (err)
2933 return err;
2934
2935 if (!tb[IWL_MVM_TM_ATTR_CMD])
2936 return -EINVAL;
2937
2938 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
2939 case IWL_MVM_TM_CMD_SET_NOA:
2940 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
2941 !vif->bss_conf.enable_beacon ||
2942 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
2943 return -EINVAL;
2944
2945 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
2946 if (noa_duration >= vif->bss_conf.beacon_int)
2947 return -EINVAL;
2948
2949 mvm->noa_duration = noa_duration;
2950 mvm->noa_vif = vif;
2951
2952 return iwl_mvm_update_quotas(mvm, NULL);
2953 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
2954 /* must be associated client vif - ignore authorized */
2955 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
2956 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
2957 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
2958 return -EINVAL;
2959
2960 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
2961 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2962 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
2963 }
2964
2965 return -EOPNOTSUPP;
2966 }
2967
2968 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
2969 struct ieee80211_vif *vif,
2970 void *data, int len)
2971 {
2972 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2973 int err;
2974
2975 mutex_lock(&mvm->mutex);
2976 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
2977 mutex_unlock(&mvm->mutex);
2978
2979 return err;
2980 }
2981 #endif
2982
2983 static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
2984 struct ieee80211_vif *vif,
2985 struct cfg80211_chan_def *chandef)
2986 {
2987 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2988 struct ieee80211_vif *csa_vif;
2989
2990 mutex_lock(&mvm->mutex);
2991
2992 csa_vif = rcu_dereference_protected(mvm->csa_vif,
2993 lockdep_is_held(&mvm->mutex));
2994 if (WARN(csa_vif && csa_vif->csa_active,
2995 "Another CSA is already in progress"))
2996 goto out_unlock;
2997
2998 IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
2999 chandef->center_freq1);
3000 rcu_assign_pointer(mvm->csa_vif, vif);
3001
3002 out_unlock:
3003 mutex_unlock(&mvm->mutex);
3004 }
3005
3006 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3007 struct ieee80211_vif *vif, u32 queues, bool drop)
3008 {
3009 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3010 struct iwl_mvm_vif *mvmvif;
3011 struct iwl_mvm_sta *mvmsta;
3012
3013 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3014 return;
3015
3016 mutex_lock(&mvm->mutex);
3017 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3018 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
3019
3020 if (WARN_ON_ONCE(!mvmsta))
3021 goto done;
3022
3023 if (drop) {
3024 if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
3025 IWL_ERR(mvm, "flush request fail\n");
3026 } else {
3027 iwl_trans_wait_tx_queue_empty(mvm->trans,
3028 mvmsta->tfd_queue_msk);
3029 }
3030 done:
3031 mutex_unlock(&mvm->mutex);
3032 }
3033
3034 const struct ieee80211_ops iwl_mvm_hw_ops = {
3035 .tx = iwl_mvm_mac_tx,
3036 .ampdu_action = iwl_mvm_mac_ampdu_action,
3037 .start = iwl_mvm_mac_start,
3038 .restart_complete = iwl_mvm_mac_restart_complete,
3039 .stop = iwl_mvm_mac_stop,
3040 .add_interface = iwl_mvm_mac_add_interface,
3041 .remove_interface = iwl_mvm_mac_remove_interface,
3042 .config = iwl_mvm_mac_config,
3043 .prepare_multicast = iwl_mvm_prepare_multicast,
3044 .configure_filter = iwl_mvm_configure_filter,
3045 .bss_info_changed = iwl_mvm_bss_info_changed,
3046 .hw_scan = iwl_mvm_mac_hw_scan,
3047 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3048 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3049 .sta_state = iwl_mvm_mac_sta_state,
3050 .sta_notify = iwl_mvm_mac_sta_notify,
3051 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3052 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3053 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3054 .sta_rc_update = iwl_mvm_sta_rc_update,
3055 .conf_tx = iwl_mvm_mac_conf_tx,
3056 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3057 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3058 .flush = iwl_mvm_mac_flush,
3059 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3060 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3061 .set_key = iwl_mvm_mac_set_key,
3062 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3063 .remain_on_channel = iwl_mvm_roc,
3064 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3065 .add_chanctx = iwl_mvm_add_chanctx,
3066 .remove_chanctx = iwl_mvm_remove_chanctx,
3067 .change_chanctx = iwl_mvm_change_chanctx,
3068 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3069 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3070 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3071
3072 .start_ap = iwl_mvm_start_ap_ibss,
3073 .stop_ap = iwl_mvm_stop_ap_ibss,
3074 .join_ibss = iwl_mvm_start_ap_ibss,
3075 .leave_ibss = iwl_mvm_stop_ap_ibss,
3076
3077 .set_tim = iwl_mvm_set_tim,
3078
3079 .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
3080
3081 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3082
3083 #ifdef CONFIG_PM_SLEEP
3084 /* look at d3.c */
3085 .suspend = iwl_mvm_suspend,
3086 .resume = iwl_mvm_resume,
3087 .set_wakeup = iwl_mvm_set_wakeup,
3088 .set_rekey_data = iwl_mvm_set_rekey_data,
3089 #if IS_ENABLED(CONFIG_IPV6)
3090 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3091 #endif
3092 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3093 #endif
3094 };
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