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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 goto drop;
531
532 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
533 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
534 ieee80211_is_mgmt(hdr->frame_control) &&
535 !ieee80211_is_deauth(hdr->frame_control) &&
536 !ieee80211_is_disassoc(hdr->frame_control) &&
537 !ieee80211_is_action(hdr->frame_control)))
538 sta = NULL;
539
540 if (sta) {
541 if (iwl_mvm_defer_tx(mvm, sta, skb))
542 return;
543 if (iwl_mvm_tx_skb(mvm, skb, sta))
544 goto drop;
545 return;
546 }
547
548 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
549 goto drop;
550 return;
551 drop:
552 ieee80211_free_txskb(hw, skb);
553 }
554
555 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
556 {
557 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
558 return false;
559 return true;
560 }
561
562 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
563 {
564 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
565 return false;
566 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
567 return true;
568
569 /* enabled by default */
570 return true;
571 }
572
573 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
574 struct ieee80211_vif *vif,
575 enum ieee80211_ampdu_mlme_action action,
576 struct ieee80211_sta *sta, u16 tid,
577 u16 *ssn, u8 buf_size)
578 {
579 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
580 int ret;
581 bool tx_agg_ref = false;
582
583 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
584 sta->addr, tid, action);
585
586 if (!(mvm->nvm_data->sku_cap_11n_enable))
587 return -EACCES;
588
589 /* return from D0i3 before starting a new Tx aggregation */
590 switch (action) {
591 case IEEE80211_AMPDU_TX_START:
592 case IEEE80211_AMPDU_TX_STOP_CONT:
593 case IEEE80211_AMPDU_TX_STOP_FLUSH:
594 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
595 case IEEE80211_AMPDU_TX_OPERATIONAL:
596 /*
597 * for tx start, wait synchronously until D0i3 exit to
598 * get the correct sequence number for the tid.
599 * additionally, some other ampdu actions use direct
600 * target access, which is not handled automatically
601 * by the trans layer (unlike commands), so wait for
602 * d0i3 exit in these cases as well.
603 */
604 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
605 if (ret)
606 return ret;
607
608 tx_agg_ref = true;
609 break;
610 default:
611 break;
612 }
613
614 mutex_lock(&mvm->mutex);
615
616 switch (action) {
617 case IEEE80211_AMPDU_RX_START:
618 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
619 ret = -EINVAL;
620 break;
621 }
622 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
623 break;
624 case IEEE80211_AMPDU_RX_STOP:
625 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
626 break;
627 case IEEE80211_AMPDU_TX_START:
628 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
629 ret = -EINVAL;
630 break;
631 }
632 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
633 break;
634 case IEEE80211_AMPDU_TX_STOP_CONT:
635 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
636 break;
637 case IEEE80211_AMPDU_TX_STOP_FLUSH:
638 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
639 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
640 break;
641 case IEEE80211_AMPDU_TX_OPERATIONAL:
642 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
643 break;
644 default:
645 WARN_ON_ONCE(1);
646 ret = -EINVAL;
647 break;
648 }
649 mutex_unlock(&mvm->mutex);
650
651 /*
652 * If the tid is marked as started, we won't use it for offloaded
653 * traffic on the next D0i3 entry. It's safe to unref.
654 */
655 if (tx_agg_ref)
656 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
657
658 return ret;
659 }
660
661 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
662 struct ieee80211_vif *vif)
663 {
664 struct iwl_mvm *mvm = data;
665 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
666
667 mvmvif->uploaded = false;
668 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
669
670 /* does this make sense at all? */
671 mvmvif->color++;
672
673 spin_lock_bh(&mvm->time_event_lock);
674 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
675 spin_unlock_bh(&mvm->time_event_lock);
676
677 mvmvif->phy_ctxt = NULL;
678 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
679 }
680
681 #ifdef CONFIG_IWLWIFI_DEBUGFS
682 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
683 {
684 static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL };
685 struct iwl_fw_error_dump_file *dump_file;
686 struct iwl_fw_error_dump_data *dump_data;
687 struct iwl_fw_error_dump_info *dump_info;
688 struct iwl_mvm_dump_ptrs *fw_error_dump;
689 const struct fw_img *img;
690 u32 sram_len, sram_ofs;
691 u32 file_len, rxf_len;
692 unsigned long flags;
693 int reg_val;
694
695 lockdep_assert_held(&mvm->mutex);
696
697 if (mvm->fw_error_dump)
698 return;
699
700 fw_error_dump = kzalloc(sizeof(*mvm->fw_error_dump), GFP_KERNEL);
701 if (!fw_error_dump)
702 return;
703
704 img = &mvm->fw->img[mvm->cur_ucode];
705 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
706 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
707
708 /* reading buffer size */
709 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
710 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
711
712 /* the register holds the value divided by 128 */
713 rxf_len = rxf_len << 7;
714
715 file_len = sizeof(*dump_file) +
716 sizeof(*dump_data) * 3 +
717 sram_len +
718 rxf_len +
719 sizeof(*dump_info);
720
721 dump_file = vzalloc(file_len);
722 if (!dump_file) {
723 kfree(fw_error_dump);
724 return;
725 }
726
727 fw_error_dump->op_mode_ptr = dump_file;
728
729 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
730 dump_data = (void *)dump_file->data;
731
732 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
733 dump_data->len = cpu_to_le32(sizeof(*dump_info));
734 dump_info = (void *) dump_data->data;
735 dump_info->device_family =
736 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
737 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
738 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
739 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
740 sizeof(dump_info->fw_human_readable));
741 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
742 sizeof(dump_info->dev_human_readable));
743 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
744 sizeof(dump_info->bus_human_readable));
745
746 dump_data = iwl_fw_error_next_data(dump_data);
747 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
748 dump_data->len = cpu_to_le32(rxf_len);
749
750 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
751 u32 *rxf = (void *)dump_data->data;
752 int i;
753
754 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
755 iwl_trans_write_prph(mvm->trans,
756 RXF_LD_FENCE_OFFSET_ADDR,
757 i * sizeof(u32));
758 rxf[i] = iwl_trans_read_prph(mvm->trans,
759 RXF_FIFO_RD_FENCE_ADDR);
760 }
761 iwl_trans_release_nic_access(mvm->trans, &flags);
762 }
763
764 dump_data = iwl_fw_error_next_data(dump_data);
765 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
766 dump_data->len = cpu_to_le32(sram_len);
767 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
768 sram_len);
769
770 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
771 fw_error_dump->op_mode_len = file_len;
772 if (fw_error_dump->trans_ptr)
773 file_len += fw_error_dump->trans_ptr->len;
774 dump_file->file_len = cpu_to_le32(file_len);
775 mvm->fw_error_dump = fw_error_dump;
776
777 /* notify the userspace about the error we had */
778 kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env);
779 }
780 #endif
781
782 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
783 {
784 iwl_mvm_fw_error_dump(mvm);
785
786 iwl_trans_stop_device(mvm->trans);
787
788 mvm->scan_status = IWL_MVM_SCAN_NONE;
789 mvm->ps_disabled = false;
790
791 /* just in case one was running */
792 ieee80211_remain_on_channel_expired(mvm->hw);
793
794 ieee80211_iterate_active_interfaces_atomic(
795 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
796 iwl_mvm_cleanup_iterator, mvm);
797
798 mvm->p2p_device_vif = NULL;
799 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
800
801 iwl_mvm_reset_phy_ctxts(mvm);
802 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
803 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
804 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
805 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
806 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
807 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
808 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
809 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
810
811 ieee80211_wake_queues(mvm->hw);
812
813 /* cleanup all stale references (scan, roc), but keep the
814 * ucode_down ref until reconfig is complete */
815 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
816
817 /* clear any stale d0i3 state */
818 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
819
820 mvm->vif_count = 0;
821 mvm->rx_ba_sessions = 0;
822 }
823
824 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
825 {
826 int ret;
827
828 lockdep_assert_held(&mvm->mutex);
829
830 /* Clean up some internal and mac80211 state on restart */
831 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
832 iwl_mvm_restart_cleanup(mvm);
833
834 ret = iwl_mvm_up(mvm);
835
836 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
837 /* Something went wrong - we need to finish some cleanup
838 * that normally iwl_mvm_mac_restart_complete() below
839 * would do.
840 */
841 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
842 iwl_mvm_d0i3_enable_tx(mvm, NULL);
843 }
844
845 return ret;
846 }
847
848 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
849 {
850 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
851 int ret;
852
853 mutex_lock(&mvm->mutex);
854 ret = __iwl_mvm_mac_start(mvm);
855 mutex_unlock(&mvm->mutex);
856
857 return ret;
858 }
859
860 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
861 {
862 int ret;
863
864 mutex_lock(&mvm->mutex);
865
866 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
867 iwl_mvm_d0i3_enable_tx(mvm, NULL);
868 ret = iwl_mvm_update_quotas(mvm, NULL);
869 if (ret)
870 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
871 ret);
872
873 /* allow transport/FW low power modes */
874 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
875
876 mutex_unlock(&mvm->mutex);
877 }
878
879 static void
880 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
881 enum ieee80211_reconfig_type reconfig_type)
882 {
883 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
884
885 switch (reconfig_type) {
886 case IEEE80211_RECONFIG_TYPE_RESTART:
887 iwl_mvm_restart_complete(mvm);
888 break;
889 case IEEE80211_RECONFIG_TYPE_SUSPEND:
890 break;
891 }
892 }
893
894 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
895 {
896 lockdep_assert_held(&mvm->mutex);
897
898 /* disallow low power states when the FW is down */
899 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
900
901 /* async_handlers_wk is now blocked */
902
903 /*
904 * The work item could be running or queued if the
905 * ROC time event stops just as we get here.
906 */
907 cancel_work_sync(&mvm->roc_done_wk);
908
909 iwl_trans_stop_device(mvm->trans);
910
911 iwl_mvm_async_handlers_purge(mvm);
912 /* async_handlers_list is empty and will stay empty: HW is stopped */
913
914 /* the fw is stopped, the aux sta is dead: clean up driver state */
915 iwl_mvm_del_aux_sta(mvm);
916
917 mvm->ucode_loaded = false;
918 }
919
920 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
921 {
922 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
923
924 flush_work(&mvm->d0i3_exit_work);
925 flush_work(&mvm->async_handlers_wk);
926 flush_work(&mvm->fw_error_dump_wk);
927
928 mutex_lock(&mvm->mutex);
929 __iwl_mvm_mac_stop(mvm);
930 mutex_unlock(&mvm->mutex);
931
932 /*
933 * The worker might have been waiting for the mutex, let it run and
934 * discover that its list is now empty.
935 */
936 cancel_work_sync(&mvm->async_handlers_wk);
937 }
938
939 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
940 {
941 u16 i;
942
943 lockdep_assert_held(&mvm->mutex);
944
945 for (i = 0; i < NUM_PHY_CTX; i++)
946 if (!mvm->phy_ctxts[i].ref)
947 return &mvm->phy_ctxts[i];
948
949 IWL_ERR(mvm, "No available PHY context\n");
950 return NULL;
951 }
952
953 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
954 s8 tx_power)
955 {
956 /* FW is in charge of regulatory enforcement */
957 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
958 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
959 .pwr_restriction = cpu_to_le16(tx_power),
960 };
961
962 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
963 sizeof(reduce_txpwr_cmd),
964 &reduce_txpwr_cmd);
965 }
966
967 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
968 struct ieee80211_vif *vif)
969 {
970 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
971 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
972 int ret;
973
974 /*
975 * make sure D0i3 exit is completed, otherwise a target access
976 * during tx queue configuration could be done when still in
977 * D0i3 state.
978 */
979 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
980 if (ret)
981 return ret;
982
983 /*
984 * Not much to do here. The stack will not allow interface
985 * types or combinations that we didn't advertise, so we
986 * don't really have to check the types.
987 */
988
989 mutex_lock(&mvm->mutex);
990
991 /* Allocate resources for the MAC context, and add it to the fw */
992 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
993 if (ret)
994 goto out_unlock;
995
996 /* Counting number of interfaces is needed for legacy PM */
997 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
998 mvm->vif_count++;
999
1000 /*
1001 * The AP binding flow can be done only after the beacon
1002 * template is configured (which happens only in the mac80211
1003 * start_ap() flow), and adding the broadcast station can happen
1004 * only after the binding.
1005 * In addition, since modifying the MAC before adding a bcast
1006 * station is not allowed by the FW, delay the adding of MAC context to
1007 * the point where we can also add the bcast station.
1008 * In short: there's not much we can do at this point, other than
1009 * allocating resources :)
1010 */
1011 if (vif->type == NL80211_IFTYPE_AP ||
1012 vif->type == NL80211_IFTYPE_ADHOC) {
1013 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1014 if (ret) {
1015 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1016 goto out_release;
1017 }
1018
1019 iwl_mvm_vif_dbgfs_register(mvm, vif);
1020 goto out_unlock;
1021 }
1022
1023 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1024 if (ret)
1025 goto out_release;
1026
1027 ret = iwl_mvm_power_update_mac(mvm);
1028 if (ret)
1029 goto out_release;
1030
1031 /* beacon filtering */
1032 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1033 if (ret)
1034 goto out_remove_mac;
1035
1036 if (!mvm->bf_allowed_vif &&
1037 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1038 mvm->bf_allowed_vif = mvmvif;
1039 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1040 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1041 }
1042
1043 /*
1044 * P2P_DEVICE interface does not have a channel context assigned to it,
1045 * so a dedicated PHY context is allocated to it and the corresponding
1046 * MAC context is bound to it at this stage.
1047 */
1048 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1049
1050 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1051 if (!mvmvif->phy_ctxt) {
1052 ret = -ENOSPC;
1053 goto out_free_bf;
1054 }
1055
1056 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1057 ret = iwl_mvm_binding_add_vif(mvm, vif);
1058 if (ret)
1059 goto out_unref_phy;
1060
1061 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1062 if (ret)
1063 goto out_unbind;
1064
1065 /* Save a pointer to p2p device vif, so it can later be used to
1066 * update the p2p device MAC when a GO is started/stopped */
1067 mvm->p2p_device_vif = vif;
1068 }
1069
1070 iwl_mvm_vif_dbgfs_register(mvm, vif);
1071 goto out_unlock;
1072
1073 out_unbind:
1074 iwl_mvm_binding_remove_vif(mvm, vif);
1075 out_unref_phy:
1076 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1077 out_free_bf:
1078 if (mvm->bf_allowed_vif == mvmvif) {
1079 mvm->bf_allowed_vif = NULL;
1080 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1081 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1082 }
1083 out_remove_mac:
1084 mvmvif->phy_ctxt = NULL;
1085 iwl_mvm_mac_ctxt_remove(mvm, vif);
1086 out_release:
1087 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1088 mvm->vif_count--;
1089
1090 iwl_mvm_mac_ctxt_release(mvm, vif);
1091 out_unlock:
1092 mutex_unlock(&mvm->mutex);
1093
1094 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1095
1096 return ret;
1097 }
1098
1099 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1100 struct ieee80211_vif *vif)
1101 {
1102 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(mvm, vif);
1103
1104 if (tfd_msk) {
1105 mutex_lock(&mvm->mutex);
1106 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1107 mutex_unlock(&mvm->mutex);
1108 }
1109
1110 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1111 /*
1112 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1113 * We assume here that all the packets sent to the OFFCHANNEL
1114 * queue are sent in ROC session.
1115 */
1116 flush_work(&mvm->roc_done_wk);
1117 } else {
1118 /*
1119 * By now, all the AC queues are empty. The AGG queues are
1120 * empty too. We already got all the Tx responses for all the
1121 * packets in the queues. The drain work can have been
1122 * triggered. Flush it.
1123 */
1124 flush_work(&mvm->sta_drained_wk);
1125 }
1126 }
1127
1128 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1129 struct ieee80211_vif *vif)
1130 {
1131 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1132 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1133
1134 iwl_mvm_prepare_mac_removal(mvm, vif);
1135
1136 mutex_lock(&mvm->mutex);
1137
1138 if (mvm->bf_allowed_vif == mvmvif) {
1139 mvm->bf_allowed_vif = NULL;
1140 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1141 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1142 }
1143
1144 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1145
1146 /*
1147 * For AP/GO interface, the tear down of the resources allocated to the
1148 * interface is be handled as part of the stop_ap flow.
1149 */
1150 if (vif->type == NL80211_IFTYPE_AP ||
1151 vif->type == NL80211_IFTYPE_ADHOC) {
1152 #ifdef CONFIG_NL80211_TESTMODE
1153 if (vif == mvm->noa_vif) {
1154 mvm->noa_vif = NULL;
1155 mvm->noa_duration = 0;
1156 }
1157 #endif
1158 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1159 goto out_release;
1160 }
1161
1162 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1163 mvm->p2p_device_vif = NULL;
1164 iwl_mvm_rm_bcast_sta(mvm, vif);
1165 iwl_mvm_binding_remove_vif(mvm, vif);
1166 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1167 mvmvif->phy_ctxt = NULL;
1168 }
1169
1170 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1171 mvm->vif_count--;
1172
1173 iwl_mvm_power_update_mac(mvm);
1174 iwl_mvm_mac_ctxt_remove(mvm, vif);
1175
1176 out_release:
1177 iwl_mvm_mac_ctxt_release(mvm, vif);
1178 mutex_unlock(&mvm->mutex);
1179 }
1180
1181 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1182 {
1183 return 0;
1184 }
1185
1186 struct iwl_mvm_mc_iter_data {
1187 struct iwl_mvm *mvm;
1188 int port_id;
1189 };
1190
1191 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1192 struct ieee80211_vif *vif)
1193 {
1194 struct iwl_mvm_mc_iter_data *data = _data;
1195 struct iwl_mvm *mvm = data->mvm;
1196 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1197 int ret, len;
1198
1199 /* if we don't have free ports, mcast frames will be dropped */
1200 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1201 return;
1202
1203 if (vif->type != NL80211_IFTYPE_STATION ||
1204 !vif->bss_conf.assoc)
1205 return;
1206
1207 cmd->port_id = data->port_id++;
1208 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1209 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1210
1211 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1212 if (ret)
1213 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1214 }
1215
1216 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1217 {
1218 struct iwl_mvm_mc_iter_data iter_data = {
1219 .mvm = mvm,
1220 };
1221
1222 lockdep_assert_held(&mvm->mutex);
1223
1224 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1225 return;
1226
1227 ieee80211_iterate_active_interfaces_atomic(
1228 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1229 iwl_mvm_mc_iface_iterator, &iter_data);
1230 }
1231
1232 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1233 struct netdev_hw_addr_list *mc_list)
1234 {
1235 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1236 struct iwl_mcast_filter_cmd *cmd;
1237 struct netdev_hw_addr *addr;
1238 int addr_count;
1239 bool pass_all;
1240 int len;
1241
1242 addr_count = netdev_hw_addr_list_count(mc_list);
1243 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1244 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1245 if (pass_all)
1246 addr_count = 0;
1247
1248 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1249 cmd = kzalloc(len, GFP_ATOMIC);
1250 if (!cmd)
1251 return 0;
1252
1253 if (pass_all) {
1254 cmd->pass_all = 1;
1255 return (u64)(unsigned long)cmd;
1256 }
1257
1258 netdev_hw_addr_list_for_each(addr, mc_list) {
1259 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1260 cmd->count, addr->addr);
1261 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1262 addr->addr, ETH_ALEN);
1263 cmd->count++;
1264 }
1265
1266 return (u64)(unsigned long)cmd;
1267 }
1268
1269 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1270 unsigned int changed_flags,
1271 unsigned int *total_flags,
1272 u64 multicast)
1273 {
1274 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1275 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1276
1277 mutex_lock(&mvm->mutex);
1278
1279 /* replace previous configuration */
1280 kfree(mvm->mcast_filter_cmd);
1281 mvm->mcast_filter_cmd = cmd;
1282
1283 if (!cmd)
1284 goto out;
1285
1286 iwl_mvm_recalc_multicast(mvm);
1287 out:
1288 mutex_unlock(&mvm->mutex);
1289 *total_flags = 0;
1290 }
1291
1292 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1293 struct iwl_bcast_iter_data {
1294 struct iwl_mvm *mvm;
1295 struct iwl_bcast_filter_cmd *cmd;
1296 u8 current_filter;
1297 };
1298
1299 static void
1300 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1301 const struct iwl_fw_bcast_filter *in_filter,
1302 struct iwl_fw_bcast_filter *out_filter)
1303 {
1304 struct iwl_fw_bcast_filter_attr *attr;
1305 int i;
1306
1307 memcpy(out_filter, in_filter, sizeof(*out_filter));
1308
1309 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1310 attr = &out_filter->attrs[i];
1311
1312 if (!attr->mask)
1313 break;
1314
1315 switch (attr->reserved1) {
1316 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1317 if (vif->bss_conf.arp_addr_cnt != 1) {
1318 attr->mask = 0;
1319 continue;
1320 }
1321
1322 attr->val = vif->bss_conf.arp_addr_list[0];
1323 break;
1324 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1325 attr->val = *(__be32 *)&vif->addr[2];
1326 break;
1327 default:
1328 break;
1329 }
1330 attr->reserved1 = 0;
1331 out_filter->num_attrs++;
1332 }
1333 }
1334
1335 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1336 struct ieee80211_vif *vif)
1337 {
1338 struct iwl_bcast_iter_data *data = _data;
1339 struct iwl_mvm *mvm = data->mvm;
1340 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1341 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1342 struct iwl_fw_bcast_mac *bcast_mac;
1343 int i;
1344
1345 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1346 return;
1347
1348 bcast_mac = &cmd->macs[mvmvif->id];
1349
1350 /*
1351 * enable filtering only for associated stations, but not for P2P
1352 * Clients
1353 */
1354 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1355 !vif->bss_conf.assoc)
1356 return;
1357
1358 bcast_mac->default_discard = 1;
1359
1360 /* copy all configured filters */
1361 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1362 /*
1363 * Make sure we don't exceed our filters limit.
1364 * if there is still a valid filter to be configured,
1365 * be on the safe side and just allow bcast for this mac.
1366 */
1367 if (WARN_ON_ONCE(data->current_filter >=
1368 ARRAY_SIZE(cmd->filters))) {
1369 bcast_mac->default_discard = 0;
1370 bcast_mac->attached_filters = 0;
1371 break;
1372 }
1373
1374 iwl_mvm_set_bcast_filter(vif,
1375 &mvm->bcast_filters[i],
1376 &cmd->filters[data->current_filter]);
1377
1378 /* skip current filter if it contains no attributes */
1379 if (!cmd->filters[data->current_filter].num_attrs)
1380 continue;
1381
1382 /* attach the filter to current mac */
1383 bcast_mac->attached_filters |=
1384 cpu_to_le16(BIT(data->current_filter));
1385
1386 data->current_filter++;
1387 }
1388 }
1389
1390 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1391 struct iwl_bcast_filter_cmd *cmd)
1392 {
1393 struct iwl_bcast_iter_data iter_data = {
1394 .mvm = mvm,
1395 .cmd = cmd,
1396 };
1397
1398 memset(cmd, 0, sizeof(*cmd));
1399 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1400 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1401
1402 #ifdef CONFIG_IWLWIFI_DEBUGFS
1403 /* use debugfs filters/macs if override is configured */
1404 if (mvm->dbgfs_bcast_filtering.override) {
1405 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1406 sizeof(cmd->filters));
1407 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1408 sizeof(cmd->macs));
1409 return true;
1410 }
1411 #endif
1412
1413 /* if no filters are configured, do nothing */
1414 if (!mvm->bcast_filters)
1415 return false;
1416
1417 /* configure and attach these filters for each associated sta vif */
1418 ieee80211_iterate_active_interfaces(
1419 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1420 iwl_mvm_bcast_filter_iterator, &iter_data);
1421
1422 return true;
1423 }
1424 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1425 struct ieee80211_vif *vif)
1426 {
1427 struct iwl_bcast_filter_cmd cmd;
1428
1429 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1430 return 0;
1431
1432 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1433 return 0;
1434
1435 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1436 sizeof(cmd), &cmd);
1437 }
1438 #else
1439 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1440 struct ieee80211_vif *vif)
1441 {
1442 return 0;
1443 }
1444 #endif
1445
1446 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1447 struct ieee80211_vif *vif,
1448 struct ieee80211_bss_conf *bss_conf,
1449 u32 changes)
1450 {
1451 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1452 int ret;
1453
1454 /*
1455 * Re-calculate the tsf id, as the master-slave relations depend on the
1456 * beacon interval, which was not known when the station interface was
1457 * added.
1458 */
1459 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1460 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1461
1462 /*
1463 * If we're not associated yet, take the (new) BSSID before associating
1464 * so the firmware knows. If we're already associated, then use the old
1465 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1466 * branch for disassociation below.
1467 */
1468 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1469 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1470
1471 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1472 if (ret)
1473 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1474
1475 /* after sending it once, adopt mac80211 data */
1476 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1477 mvmvif->associated = bss_conf->assoc;
1478
1479 if (changes & BSS_CHANGED_ASSOC) {
1480 if (bss_conf->assoc) {
1481 /* add quota for this interface */
1482 ret = iwl_mvm_update_quotas(mvm, NULL);
1483 if (ret) {
1484 IWL_ERR(mvm, "failed to update quotas\n");
1485 return;
1486 }
1487
1488 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1489 &mvm->status)) {
1490 /*
1491 * If we're restarting then the firmware will
1492 * obviously have lost synchronisation with
1493 * the AP. It will attempt to synchronise by
1494 * itself, but we can make it more reliable by
1495 * scheduling a session protection time event.
1496 *
1497 * The firmware needs to receive a beacon to
1498 * catch up with synchronisation, use 110% of
1499 * the beacon interval.
1500 *
1501 * Set a large maximum delay to allow for more
1502 * than a single interface.
1503 */
1504 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1505 iwl_mvm_protect_session(mvm, vif, dur, dur,
1506 5 * dur, false);
1507 }
1508
1509 iwl_mvm_sf_update(mvm, vif, false);
1510 iwl_mvm_power_vif_assoc(mvm, vif);
1511 if (vif->p2p) {
1512 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1513 iwl_mvm_update_smps(mvm, vif,
1514 IWL_MVM_SMPS_REQ_PROT,
1515 IEEE80211_SMPS_DYNAMIC);
1516 }
1517 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1518 /*
1519 * If update fails - SF might be running in associated
1520 * mode while disassociated - which is forbidden.
1521 */
1522 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1523 "Failed to update SF upon disassociation\n");
1524
1525 /* remove AP station now that the MAC is unassoc */
1526 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1527 if (ret)
1528 IWL_ERR(mvm, "failed to remove AP station\n");
1529
1530 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1531 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1532 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1533 /* remove quota for this interface */
1534 ret = iwl_mvm_update_quotas(mvm, NULL);
1535 if (ret)
1536 IWL_ERR(mvm, "failed to update quotas\n");
1537
1538 if (vif->p2p)
1539 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1540
1541 /* this will take the cleared BSSID from bss_conf */
1542 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1543 if (ret)
1544 IWL_ERR(mvm,
1545 "failed to update MAC %pM (clear after unassoc)\n",
1546 vif->addr);
1547 }
1548
1549 iwl_mvm_recalc_multicast(mvm);
1550 iwl_mvm_configure_bcast_filter(mvm, vif);
1551
1552 /* reset rssi values */
1553 mvmvif->bf_data.ave_beacon_signal = 0;
1554
1555 iwl_mvm_bt_coex_vif_change(mvm);
1556 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1557 IEEE80211_SMPS_AUTOMATIC);
1558 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1559 /*
1560 * We received a beacon _after_ association so
1561 * remove the session protection.
1562 */
1563 iwl_mvm_remove_time_event(mvm, mvmvif,
1564 &mvmvif->time_event_data);
1565 }
1566
1567 if (changes & BSS_CHANGED_BEACON_INFO) {
1568 iwl_mvm_sf_update(mvm, vif, false);
1569 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1570 }
1571
1572 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1573 ret = iwl_mvm_power_update_mac(mvm);
1574 if (ret)
1575 IWL_ERR(mvm, "failed to update power mode\n");
1576 }
1577
1578 if (changes & BSS_CHANGED_TXPOWER) {
1579 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1580 bss_conf->txpower);
1581 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1582 }
1583
1584 if (changes & BSS_CHANGED_CQM) {
1585 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1586 /* reset cqm events tracking */
1587 mvmvif->bf_data.last_cqm_event = 0;
1588 if (mvmvif->bf_data.bf_enabled) {
1589 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1590 if (ret)
1591 IWL_ERR(mvm,
1592 "failed to update CQM thresholds\n");
1593 }
1594 }
1595
1596 if (changes & BSS_CHANGED_ARP_FILTER) {
1597 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1598 iwl_mvm_configure_bcast_filter(mvm, vif);
1599 }
1600 }
1601
1602 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1603 struct ieee80211_vif *vif)
1604 {
1605 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1606 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1607 int ret;
1608
1609 /*
1610 * iwl_mvm_mac_ctxt_add() might read directly from the device
1611 * (the system time), so make sure it is available.
1612 */
1613 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1614 if (ret)
1615 return ret;
1616
1617 mutex_lock(&mvm->mutex);
1618
1619 /* Send the beacon template */
1620 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1621 if (ret)
1622 goto out_unlock;
1623
1624 /*
1625 * Re-calculate the tsf id, as the master-slave relations depend on the
1626 * beacon interval, which was not known when the AP interface was added.
1627 */
1628 if (vif->type == NL80211_IFTYPE_AP)
1629 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1630
1631 /* Add the mac context */
1632 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1633 if (ret)
1634 goto out_unlock;
1635
1636 /* Perform the binding */
1637 ret = iwl_mvm_binding_add_vif(mvm, vif);
1638 if (ret)
1639 goto out_remove;
1640
1641 /* Send the bcast station. At this stage the TBTT and DTIM time events
1642 * are added and applied to the scheduler */
1643 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1644 if (ret)
1645 goto out_unbind;
1646
1647 /* must be set before quota calculations */
1648 mvmvif->ap_ibss_active = true;
1649
1650 /* power updated needs to be done before quotas */
1651 iwl_mvm_power_update_mac(mvm);
1652
1653 ret = iwl_mvm_update_quotas(mvm, NULL);
1654 if (ret)
1655 goto out_quota_failed;
1656
1657 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1658 if (vif->p2p && mvm->p2p_device_vif)
1659 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1660
1661 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1662
1663 iwl_mvm_bt_coex_vif_change(mvm);
1664
1665 /* we don't support TDLS during DCM */
1666 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1667 iwl_mvm_teardown_tdls_peers(mvm);
1668
1669 mutex_unlock(&mvm->mutex);
1670 return 0;
1671
1672 out_quota_failed:
1673 iwl_mvm_power_update_mac(mvm);
1674 mvmvif->ap_ibss_active = false;
1675 iwl_mvm_send_rm_bcast_sta(mvm, vif);
1676 out_unbind:
1677 iwl_mvm_binding_remove_vif(mvm, vif);
1678 out_remove:
1679 iwl_mvm_mac_ctxt_remove(mvm, vif);
1680 out_unlock:
1681 mutex_unlock(&mvm->mutex);
1682 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
1683 return ret;
1684 }
1685
1686 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1687 struct ieee80211_vif *vif)
1688 {
1689 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1690 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1691
1692 iwl_mvm_prepare_mac_removal(mvm, vif);
1693
1694 mutex_lock(&mvm->mutex);
1695
1696 /* Handle AP stop while in CSA */
1697 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1698 iwl_mvm_remove_time_event(mvm, mvmvif,
1699 &mvmvif->time_event_data);
1700 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1701 }
1702
1703 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1704 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1705 mvm->csa_tx_block_bcn_timeout = 0;
1706 }
1707
1708 mvmvif->ap_ibss_active = false;
1709 mvm->ap_last_beacon_gp2 = 0;
1710
1711 iwl_mvm_bt_coex_vif_change(mvm);
1712
1713 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1714
1715 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1716 if (vif->p2p && mvm->p2p_device_vif)
1717 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1718
1719 iwl_mvm_update_quotas(mvm, NULL);
1720 iwl_mvm_send_rm_bcast_sta(mvm, vif);
1721 iwl_mvm_binding_remove_vif(mvm, vif);
1722
1723 iwl_mvm_power_update_mac(mvm);
1724
1725 iwl_mvm_mac_ctxt_remove(mvm, vif);
1726
1727 mutex_unlock(&mvm->mutex);
1728 }
1729
1730 static void
1731 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1732 struct ieee80211_vif *vif,
1733 struct ieee80211_bss_conf *bss_conf,
1734 u32 changes)
1735 {
1736 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1737
1738 /* Changes will be applied when the AP/IBSS is started */
1739 if (!mvmvif->ap_ibss_active)
1740 return;
1741
1742 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1743 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
1744 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
1745 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1746
1747 /* Need to send a new beacon template to the FW */
1748 if (changes & BSS_CHANGED_BEACON &&
1749 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1750 IWL_WARN(mvm, "Failed updating beacon data\n");
1751 }
1752
1753 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1754 struct ieee80211_vif *vif,
1755 struct ieee80211_bss_conf *bss_conf,
1756 u32 changes)
1757 {
1758 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1759
1760 /*
1761 * iwl_mvm_bss_info_changed_station() might call
1762 * iwl_mvm_protect_session(), which reads directly from
1763 * the device (the system time), so make sure it is available.
1764 */
1765 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1766 return;
1767
1768 mutex_lock(&mvm->mutex);
1769
1770 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
1771 iwl_mvm_scan_offload_stop(mvm, true);
1772
1773 switch (vif->type) {
1774 case NL80211_IFTYPE_STATION:
1775 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1776 break;
1777 case NL80211_IFTYPE_AP:
1778 case NL80211_IFTYPE_ADHOC:
1779 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1780 break;
1781 default:
1782 /* shouldn't happen */
1783 WARN_ON_ONCE(1);
1784 }
1785
1786 mutex_unlock(&mvm->mutex);
1787 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
1788 }
1789
1790 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1791 enum iwl_scan_status scan_type)
1792 {
1793 int ret;
1794 bool wait_for_handlers = false;
1795
1796 mutex_lock(&mvm->mutex);
1797
1798 if (mvm->scan_status != scan_type) {
1799 ret = 0;
1800 /* make sure there are no pending notifications */
1801 wait_for_handlers = true;
1802 goto out;
1803 }
1804
1805 switch (scan_type) {
1806 case IWL_MVM_SCAN_SCHED:
1807 ret = iwl_mvm_scan_offload_stop(mvm, true);
1808 break;
1809 case IWL_MVM_SCAN_OS:
1810 ret = iwl_mvm_cancel_scan(mvm);
1811 break;
1812 case IWL_MVM_SCAN_NONE:
1813 default:
1814 WARN_ON_ONCE(1);
1815 ret = -EINVAL;
1816 break;
1817 }
1818 if (ret)
1819 goto out;
1820
1821 wait_for_handlers = true;
1822 out:
1823 mutex_unlock(&mvm->mutex);
1824
1825 /* make sure we consume the completion notification */
1826 if (wait_for_handlers)
1827 iwl_mvm_wait_for_async_handlers(mvm);
1828
1829 return ret;
1830 }
1831 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1832 struct ieee80211_vif *vif,
1833 struct ieee80211_scan_request *hw_req)
1834 {
1835 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1836 struct cfg80211_scan_request *req = &hw_req->req;
1837 int ret;
1838
1839 if (req->n_channels == 0 ||
1840 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1841 return -EINVAL;
1842
1843 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1844 if (ret)
1845 return ret;
1846
1847 mutex_lock(&mvm->mutex);
1848
1849 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1850 ret = -EBUSY;
1851 goto out;
1852 }
1853
1854 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1855
1856 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1857 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1858 else
1859 ret = iwl_mvm_scan_request(mvm, vif, req);
1860
1861 if (ret)
1862 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1863 out:
1864 mutex_unlock(&mvm->mutex);
1865 return ret;
1866 }
1867
1868 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1869 struct ieee80211_vif *vif)
1870 {
1871 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1872
1873 mutex_lock(&mvm->mutex);
1874
1875 iwl_mvm_cancel_scan(mvm);
1876
1877 mutex_unlock(&mvm->mutex);
1878 }
1879
1880 static void
1881 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1882 struct ieee80211_sta *sta, u16 tids,
1883 int num_frames,
1884 enum ieee80211_frame_release_type reason,
1885 bool more_data)
1886 {
1887 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1888
1889 /* Called when we need to transmit (a) frame(s) from mac80211 */
1890
1891 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1892 tids, more_data, false);
1893 }
1894
1895 static void
1896 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1897 struct ieee80211_sta *sta, u16 tids,
1898 int num_frames,
1899 enum ieee80211_frame_release_type reason,
1900 bool more_data)
1901 {
1902 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1903
1904 /* Called when we need to transmit (a) frame(s) from agg queue */
1905
1906 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1907 tids, more_data, true);
1908 }
1909
1910 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1911 struct ieee80211_vif *vif,
1912 enum sta_notify_cmd cmd,
1913 struct ieee80211_sta *sta)
1914 {
1915 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1916 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1917 int tid;
1918
1919 switch (cmd) {
1920 case STA_NOTIFY_SLEEP:
1921 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
1922 ieee80211_sta_block_awake(hw, sta, true);
1923 spin_lock_bh(&mvmsta->lock);
1924 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1925 struct iwl_mvm_tid_data *tid_data;
1926
1927 tid_data = &mvmsta->tid_data[tid];
1928 if (tid_data->state != IWL_AGG_ON &&
1929 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
1930 continue;
1931 if (iwl_mvm_tid_queued(tid_data) == 0)
1932 continue;
1933 ieee80211_sta_set_buffered(sta, tid, true);
1934 }
1935 spin_unlock_bh(&mvmsta->lock);
1936 /*
1937 * The fw updates the STA to be asleep. Tx packets on the Tx
1938 * queues to this station will not be transmitted. The fw will
1939 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1940 */
1941 break;
1942 case STA_NOTIFY_AWAKE:
1943 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1944 break;
1945 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1946 break;
1947 default:
1948 break;
1949 }
1950 }
1951
1952 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1953 struct ieee80211_vif *vif,
1954 struct ieee80211_sta *sta)
1955 {
1956 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1957 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1958
1959 /*
1960 * This is called before mac80211 does RCU synchronisation,
1961 * so here we already invalidate our internal RCU-protected
1962 * station pointer. The rest of the code will thus no longer
1963 * be able to find the station this way, and we don't rely
1964 * on further RCU synchronisation after the sta_state()
1965 * callback deleted the station.
1966 */
1967 mutex_lock(&mvm->mutex);
1968 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1969 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1970 ERR_PTR(-ENOENT));
1971 mutex_unlock(&mvm->mutex);
1972 }
1973
1974 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1975 struct ieee80211_vif *vif,
1976 struct ieee80211_sta *sta,
1977 enum ieee80211_sta_state old_state,
1978 enum ieee80211_sta_state new_state)
1979 {
1980 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1981 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1982 int ret;
1983
1984 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1985 sta->addr, old_state, new_state);
1986
1987 /* this would be a mac80211 bug ... but don't crash */
1988 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1989 return -EINVAL;
1990
1991 /* if a STA is being removed, reuse its ID */
1992 flush_work(&mvm->sta_drained_wk);
1993
1994 mutex_lock(&mvm->mutex);
1995 if (old_state == IEEE80211_STA_NOTEXIST &&
1996 new_state == IEEE80211_STA_NONE) {
1997 /*
1998 * Firmware bug - it'll crash if the beacon interval is less
1999 * than 16. We can't avoid connecting at all, so refuse the
2000 * station state change, this will cause mac80211 to abandon
2001 * attempts to connect to this AP, and eventually wpa_s will
2002 * blacklist the AP...
2003 */
2004 if (vif->type == NL80211_IFTYPE_STATION &&
2005 vif->bss_conf.beacon_int < 16) {
2006 IWL_ERR(mvm,
2007 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2008 sta->addr, vif->bss_conf.beacon_int);
2009 ret = -EINVAL;
2010 goto out_unlock;
2011 }
2012
2013 if (sta->tdls &&
2014 (vif->p2p ||
2015 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2016 IWL_MVM_TDLS_STA_COUNT ||
2017 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2018 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2019 ret = -EBUSY;
2020 goto out_unlock;
2021 }
2022
2023 ret = iwl_mvm_add_sta(mvm, vif, sta);
2024 if (sta->tdls && ret == 0)
2025 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2026 } else if (old_state == IEEE80211_STA_NONE &&
2027 new_state == IEEE80211_STA_AUTH) {
2028 /*
2029 * EBS may be disabled due to previous failures reported by FW.
2030 * Reset EBS status here assuming environment has been changed.
2031 */
2032 mvm->last_ebs_successful = true;
2033 ret = 0;
2034 } else if (old_state == IEEE80211_STA_AUTH &&
2035 new_state == IEEE80211_STA_ASSOC) {
2036 ret = iwl_mvm_update_sta(mvm, vif, sta);
2037 if (ret == 0)
2038 iwl_mvm_rs_rate_init(mvm, sta,
2039 mvmvif->phy_ctxt->channel->band,
2040 true);
2041 } else if (old_state == IEEE80211_STA_ASSOC &&
2042 new_state == IEEE80211_STA_AUTHORIZED) {
2043
2044 /* we don't support TDLS during DCM */
2045 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2046 iwl_mvm_teardown_tdls_peers(mvm);
2047
2048 /* enable beacon filtering */
2049 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2050 ret = 0;
2051 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2052 new_state == IEEE80211_STA_ASSOC) {
2053 /* disable beacon filtering */
2054 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2055 ret = 0;
2056 } else if (old_state == IEEE80211_STA_ASSOC &&
2057 new_state == IEEE80211_STA_AUTH) {
2058 ret = 0;
2059 } else if (old_state == IEEE80211_STA_AUTH &&
2060 new_state == IEEE80211_STA_NONE) {
2061 ret = 0;
2062 } else if (old_state == IEEE80211_STA_NONE &&
2063 new_state == IEEE80211_STA_NOTEXIST) {
2064 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2065 if (sta->tdls)
2066 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2067 } else {
2068 ret = -EIO;
2069 }
2070 out_unlock:
2071 mutex_unlock(&mvm->mutex);
2072
2073 return ret;
2074 }
2075
2076 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2077 {
2078 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2079
2080 mvm->rts_threshold = value;
2081
2082 return 0;
2083 }
2084
2085 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2086 struct ieee80211_vif *vif,
2087 struct ieee80211_sta *sta, u32 changed)
2088 {
2089 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2090
2091 if (vif->type == NL80211_IFTYPE_STATION &&
2092 changed & IEEE80211_RC_NSS_CHANGED)
2093 iwl_mvm_sf_update(mvm, vif, false);
2094 }
2095
2096 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2097 struct ieee80211_vif *vif, u16 ac,
2098 const struct ieee80211_tx_queue_params *params)
2099 {
2100 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2101 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2102
2103 mvmvif->queue_params[ac] = *params;
2104
2105 /*
2106 * No need to update right away, we'll get BSS_CHANGED_QOS
2107 * The exception is P2P_DEVICE interface which needs immediate update.
2108 */
2109 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2110 int ret;
2111
2112 mutex_lock(&mvm->mutex);
2113 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2114 mutex_unlock(&mvm->mutex);
2115 return ret;
2116 }
2117 return 0;
2118 }
2119
2120 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2121 struct ieee80211_vif *vif)
2122 {
2123 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2124 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2125 200 + vif->bss_conf.beacon_int);
2126 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2127 100 + vif->bss_conf.beacon_int);
2128
2129 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2130 return;
2131
2132 /*
2133 * iwl_mvm_protect_session() reads directly from the device
2134 * (the system time), so make sure it is available.
2135 */
2136 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2137 return;
2138
2139 mutex_lock(&mvm->mutex);
2140 /* Try really hard to protect the session and hear a beacon */
2141 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2142 mutex_unlock(&mvm->mutex);
2143
2144 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2145 }
2146
2147 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2148 struct ieee80211_vif *vif,
2149 struct cfg80211_sched_scan_request *req,
2150 struct ieee80211_scan_ies *ies)
2151 {
2152 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2153 int ret;
2154
2155 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2156 if (ret)
2157 return ret;
2158
2159 mutex_lock(&mvm->mutex);
2160
2161 /* Newest FW fixes sched scan while connected on another interface */
2162 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2163 if (!vif->bss_conf.idle) {
2164 ret = -EBUSY;
2165 goto out;
2166 }
2167 } else if (!iwl_mvm_is_idle(mvm)) {
2168 ret = -EBUSY;
2169 goto out;
2170 }
2171
2172 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2173 ret = -EBUSY;
2174 goto out;
2175 }
2176
2177 mvm->scan_status = IWL_MVM_SCAN_SCHED;
2178
2179 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
2180 ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
2181 if (ret)
2182 goto err;
2183 }
2184
2185 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2186 if (ret)
2187 goto err;
2188
2189 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
2190 ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies);
2191 else
2192 ret = iwl_mvm_sched_scan_start(mvm, req);
2193
2194 if (!ret)
2195 goto out;
2196 err:
2197 mvm->scan_status = IWL_MVM_SCAN_NONE;
2198 out:
2199 mutex_unlock(&mvm->mutex);
2200 return ret;
2201 }
2202
2203 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2204 struct ieee80211_vif *vif)
2205 {
2206 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2207 int ret;
2208
2209 mutex_lock(&mvm->mutex);
2210 ret = iwl_mvm_scan_offload_stop(mvm, false);
2211 mutex_unlock(&mvm->mutex);
2212 iwl_mvm_wait_for_async_handlers(mvm);
2213
2214 return ret;
2215 }
2216
2217 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2218 enum set_key_cmd cmd,
2219 struct ieee80211_vif *vif,
2220 struct ieee80211_sta *sta,
2221 struct ieee80211_key_conf *key)
2222 {
2223 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2224 int ret;
2225
2226 if (iwlwifi_mod_params.sw_crypto) {
2227 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2228 return -EOPNOTSUPP;
2229 }
2230
2231 switch (key->cipher) {
2232 case WLAN_CIPHER_SUITE_TKIP:
2233 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2234 /* fall-through */
2235 case WLAN_CIPHER_SUITE_CCMP:
2236 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2237 break;
2238 case WLAN_CIPHER_SUITE_AES_CMAC:
2239 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2240 break;
2241 case WLAN_CIPHER_SUITE_WEP40:
2242 case WLAN_CIPHER_SUITE_WEP104:
2243 /*
2244 * Support for TX only, at least for now, so accept
2245 * the key and do nothing else. Then mac80211 will
2246 * pass it for TX but we don't have to use it for RX.
2247 */
2248 return 0;
2249 default:
2250 /* currently FW supports only one optional cipher scheme */
2251 if (hw->n_cipher_schemes &&
2252 hw->cipher_schemes->cipher == key->cipher)
2253 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2254 else
2255 return -EOPNOTSUPP;
2256 }
2257
2258 mutex_lock(&mvm->mutex);
2259
2260 switch (cmd) {
2261 case SET_KEY:
2262 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2263 vif->type == NL80211_IFTYPE_AP) && !sta) {
2264 /*
2265 * GTK on AP interface is a TX-only key, return 0;
2266 * on IBSS they're per-station and because we're lazy
2267 * we don't support them for RX, so do the same.
2268 */
2269 ret = 0;
2270 key->hw_key_idx = STA_KEY_IDX_INVALID;
2271 break;
2272 }
2273
2274 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2275 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2276 if (ret) {
2277 IWL_WARN(mvm, "set key failed\n");
2278 /*
2279 * can't add key for RX, but we don't need it
2280 * in the device for TX so still return 0
2281 */
2282 key->hw_key_idx = STA_KEY_IDX_INVALID;
2283 ret = 0;
2284 }
2285
2286 break;
2287 case DISABLE_KEY:
2288 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2289 ret = 0;
2290 break;
2291 }
2292
2293 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2294 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2295 break;
2296 default:
2297 ret = -EINVAL;
2298 }
2299
2300 mutex_unlock(&mvm->mutex);
2301 return ret;
2302 }
2303
2304 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2305 struct ieee80211_vif *vif,
2306 struct ieee80211_key_conf *keyconf,
2307 struct ieee80211_sta *sta,
2308 u32 iv32, u16 *phase1key)
2309 {
2310 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2311
2312 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2313 return;
2314
2315 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2316 }
2317
2318
2319 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2320 struct iwl_rx_packet *pkt, void *data)
2321 {
2322 struct iwl_mvm *mvm =
2323 container_of(notif_wait, struct iwl_mvm, notif_wait);
2324 struct iwl_hs20_roc_res *resp;
2325 int resp_len = iwl_rx_packet_payload_len(pkt);
2326 struct iwl_mvm_time_event_data *te_data = data;
2327
2328 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2329 return true;
2330
2331 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2332 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2333 return true;
2334 }
2335
2336 resp = (void *)pkt->data;
2337
2338 IWL_DEBUG_TE(mvm,
2339 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2340 resp->status, resp->event_unique_id);
2341
2342 te_data->uid = le32_to_cpu(resp->event_unique_id);
2343 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2344 te_data->uid);
2345
2346 spin_lock_bh(&mvm->time_event_lock);
2347 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2348 spin_unlock_bh(&mvm->time_event_lock);
2349
2350 return true;
2351 }
2352
2353 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2354 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2355 struct ieee80211_channel *channel,
2356 struct ieee80211_vif *vif,
2357 int duration)
2358 {
2359 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2360 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2361 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2362 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2363 struct iwl_notification_wait wait_time_event;
2364 struct iwl_hs20_roc_req aux_roc_req = {
2365 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2366 .id_and_color =
2367 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2368 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2369 /* Set the channel info data */
2370 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2371 PHY_BAND_24 : PHY_BAND_5,
2372 .channel_info.channel = channel->hw_value,
2373 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2374 /* Set the time and duration */
2375 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2376 .apply_time_max_delay =
2377 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2378 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2379 };
2380
2381 /* Set the node address */
2382 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2383
2384 te_data->vif = vif;
2385 te_data->duration = duration;
2386 te_data->id = HOT_SPOT_CMD;
2387
2388 lockdep_assert_held(&mvm->mutex);
2389
2390 spin_lock_bh(&mvm->time_event_lock);
2391 list_add_tail(&te_data->list, &mvm->time_event_list);
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 switch (vif->type) {
2448 case NL80211_IFTYPE_STATION:
2449 /* Use aux roc framework (HS20) */
2450 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2451 vif, duration);
2452 return ret;
2453 case NL80211_IFTYPE_P2P_DEVICE:
2454 /* handle below */
2455 break;
2456 default:
2457 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2458 return -EINVAL;
2459 }
2460
2461 mutex_lock(&mvm->mutex);
2462
2463 for (i = 0; i < NUM_PHY_CTX; i++) {
2464 phy_ctxt = &mvm->phy_ctxts[i];
2465 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2466 continue;
2467
2468 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2469 /*
2470 * Unbind the P2P_DEVICE from the current PHY context,
2471 * and if the PHY context is not used remove it.
2472 */
2473 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2474 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2475 goto out_unlock;
2476
2477 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2478
2479 /* Bind the P2P_DEVICE to the current PHY Context */
2480 mvmvif->phy_ctxt = phy_ctxt;
2481
2482 ret = iwl_mvm_binding_add_vif(mvm, vif);
2483 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2484 goto out_unlock;
2485
2486 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2487 goto schedule_time_event;
2488 }
2489 }
2490
2491 /* Need to update the PHY context only if the ROC channel changed */
2492 if (channel == mvmvif->phy_ctxt->channel)
2493 goto schedule_time_event;
2494
2495 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2496
2497 /*
2498 * Change the PHY context configuration as it is currently referenced
2499 * only by the P2P Device MAC
2500 */
2501 if (mvmvif->phy_ctxt->ref == 1) {
2502 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2503 &chandef, 1, 1);
2504 if (ret)
2505 goto out_unlock;
2506 } else {
2507 /*
2508 * The PHY context is shared with other MACs. Need to remove the
2509 * P2P Device from the binding, allocate an new PHY context and
2510 * create a new binding
2511 */
2512 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2513 if (!phy_ctxt) {
2514 ret = -ENOSPC;
2515 goto out_unlock;
2516 }
2517
2518 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2519 1, 1);
2520 if (ret) {
2521 IWL_ERR(mvm, "Failed to change PHY context\n");
2522 goto out_unlock;
2523 }
2524
2525 /* Unbind the P2P_DEVICE from the current PHY context */
2526 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2527 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2528 goto out_unlock;
2529
2530 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2531
2532 /* Bind the P2P_DEVICE to the new allocated PHY context */
2533 mvmvif->phy_ctxt = phy_ctxt;
2534
2535 ret = iwl_mvm_binding_add_vif(mvm, vif);
2536 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2537 goto out_unlock;
2538
2539 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2540 }
2541
2542 schedule_time_event:
2543 /* Schedule the time events */
2544 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2545
2546 out_unlock:
2547 mutex_unlock(&mvm->mutex);
2548 IWL_DEBUG_MAC80211(mvm, "leave\n");
2549 return ret;
2550 }
2551
2552 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2553 {
2554 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2555
2556 IWL_DEBUG_MAC80211(mvm, "enter\n");
2557
2558 mutex_lock(&mvm->mutex);
2559 iwl_mvm_stop_p2p_roc(mvm);
2560 mutex_unlock(&mvm->mutex);
2561
2562 IWL_DEBUG_MAC80211(mvm, "leave\n");
2563 return 0;
2564 }
2565
2566 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2567 struct ieee80211_chanctx_conf *ctx)
2568 {
2569 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2570 struct iwl_mvm_phy_ctxt *phy_ctxt;
2571 int ret;
2572
2573 lockdep_assert_held(&mvm->mutex);
2574
2575 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2576
2577 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2578 if (!phy_ctxt) {
2579 ret = -ENOSPC;
2580 goto out;
2581 }
2582
2583 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2584 ctx->rx_chains_static,
2585 ctx->rx_chains_dynamic);
2586 if (ret) {
2587 IWL_ERR(mvm, "Failed to add PHY context\n");
2588 goto out;
2589 }
2590
2591 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2592 *phy_ctxt_id = phy_ctxt->id;
2593 out:
2594 return ret;
2595 }
2596
2597 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2598 struct ieee80211_chanctx_conf *ctx)
2599 {
2600 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2601 int ret;
2602
2603 mutex_lock(&mvm->mutex);
2604 ret = __iwl_mvm_add_chanctx(mvm, ctx);
2605 mutex_unlock(&mvm->mutex);
2606
2607 return ret;
2608 }
2609
2610 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2611 struct ieee80211_chanctx_conf *ctx)
2612 {
2613 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2614 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2615
2616 lockdep_assert_held(&mvm->mutex);
2617
2618 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2619 }
2620
2621 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2622 struct ieee80211_chanctx_conf *ctx)
2623 {
2624 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2625
2626 mutex_lock(&mvm->mutex);
2627 __iwl_mvm_remove_chanctx(mvm, ctx);
2628 mutex_unlock(&mvm->mutex);
2629 }
2630
2631 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2632 struct ieee80211_chanctx_conf *ctx,
2633 u32 changed)
2634 {
2635 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2636 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2637 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2638
2639 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2640 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2641 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2642 IEEE80211_CHANCTX_CHANGE_RADAR |
2643 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2644 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2645 phy_ctxt->ref, changed))
2646 return;
2647
2648 mutex_lock(&mvm->mutex);
2649 iwl_mvm_bt_coex_vif_change(mvm);
2650 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2651 ctx->rx_chains_static,
2652 ctx->rx_chains_dynamic);
2653 mutex_unlock(&mvm->mutex);
2654 }
2655
2656 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2657 struct ieee80211_vif *vif,
2658 struct ieee80211_chanctx_conf *ctx,
2659 bool switching_chanctx)
2660 {
2661 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2662 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2663 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2664 int ret;
2665
2666 lockdep_assert_held(&mvm->mutex);
2667
2668 mvmvif->phy_ctxt = phy_ctxt;
2669
2670 switch (vif->type) {
2671 case NL80211_IFTYPE_AP:
2672 /* Unless it's a CSA flow we have nothing to do here */
2673 if (vif->csa_active) {
2674 mvmvif->ap_ibss_active = true;
2675 break;
2676 }
2677 case NL80211_IFTYPE_ADHOC:
2678 /*
2679 * The AP binding flow is handled as part of the start_ap flow
2680 * (in bss_info_changed), similarly for IBSS.
2681 */
2682 ret = 0;
2683 goto out;
2684 case NL80211_IFTYPE_STATION:
2685 break;
2686 case NL80211_IFTYPE_MONITOR:
2687 /* always disable PS when a monitor interface is active */
2688 mvmvif->ps_disabled = true;
2689 break;
2690 default:
2691 ret = -EINVAL;
2692 goto out;
2693 }
2694
2695 ret = iwl_mvm_binding_add_vif(mvm, vif);
2696 if (ret)
2697 goto out;
2698
2699 /*
2700 * Power state must be updated before quotas,
2701 * otherwise fw will complain.
2702 */
2703 iwl_mvm_power_update_mac(mvm);
2704
2705 /* Setting the quota at this stage is only required for monitor
2706 * interfaces. For the other types, the bss_info changed flow
2707 * will handle quota settings.
2708 */
2709 if (vif->type == NL80211_IFTYPE_MONITOR) {
2710 mvmvif->monitor_active = true;
2711 ret = iwl_mvm_update_quotas(mvm, NULL);
2712 if (ret)
2713 goto out_remove_binding;
2714 }
2715
2716 /* Handle binding during CSA */
2717 if ((vif->type == NL80211_IFTYPE_AP) ||
2718 (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) {
2719 iwl_mvm_update_quotas(mvm, NULL);
2720 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2721 }
2722
2723 if (vif->csa_active && vif->type == NL80211_IFTYPE_STATION) {
2724 struct iwl_mvm_sta *mvmsta;
2725
2726 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
2727 mvmvif->ap_sta_id);
2728
2729 if (WARN_ON(!mvmsta))
2730 goto out;
2731
2732 /* TODO: only re-enable after the first beacon */
2733 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
2734 }
2735
2736 goto out;
2737
2738 out_remove_binding:
2739 iwl_mvm_binding_remove_vif(mvm, vif);
2740 iwl_mvm_power_update_mac(mvm);
2741 out:
2742 if (ret)
2743 mvmvif->phy_ctxt = NULL;
2744 return ret;
2745 }
2746 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2747 struct ieee80211_vif *vif,
2748 struct ieee80211_chanctx_conf *ctx)
2749 {
2750 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2751 int ret;
2752
2753 mutex_lock(&mvm->mutex);
2754 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
2755 mutex_unlock(&mvm->mutex);
2756
2757 return ret;
2758 }
2759
2760 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2761 struct ieee80211_vif *vif,
2762 struct ieee80211_chanctx_conf *ctx,
2763 bool switching_chanctx)
2764 {
2765 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2766 struct ieee80211_vif *disabled_vif = NULL;
2767 struct iwl_mvm_sta *mvmsta;
2768
2769 lockdep_assert_held(&mvm->mutex);
2770
2771 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2772
2773 switch (vif->type) {
2774 case NL80211_IFTYPE_ADHOC:
2775 goto out;
2776 case NL80211_IFTYPE_MONITOR:
2777 mvmvif->monitor_active = false;
2778 mvmvif->ps_disabled = false;
2779 break;
2780 case NL80211_IFTYPE_AP:
2781 /* This part is triggered only during CSA */
2782 if (!vif->csa_active || !mvmvif->ap_ibss_active)
2783 goto out;
2784
2785 /* Set CS bit on all the stations */
2786 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2787
2788 /* Save blocked iface, the timeout is set on the next beacon */
2789 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2790
2791 mvmvif->ap_ibss_active = false;
2792 break;
2793 case NL80211_IFTYPE_STATION:
2794 if (!switching_chanctx)
2795 break;
2796
2797 disabled_vif = vif;
2798
2799 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
2800 mvmvif->ap_sta_id);
2801
2802 if (!WARN_ON(!mvmsta))
2803 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
2804
2805 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
2806 break;
2807 default:
2808 break;
2809 }
2810
2811 iwl_mvm_update_quotas(mvm, disabled_vif);
2812 iwl_mvm_binding_remove_vif(mvm, vif);
2813
2814 out:
2815 mvmvif->phy_ctxt = NULL;
2816 iwl_mvm_power_update_mac(mvm);
2817 }
2818
2819 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2820 struct ieee80211_vif *vif,
2821 struct ieee80211_chanctx_conf *ctx)
2822 {
2823 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2824
2825 mutex_lock(&mvm->mutex);
2826 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
2827 mutex_unlock(&mvm->mutex);
2828 }
2829
2830 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
2831 struct ieee80211_vif_chanctx_switch *vifs,
2832 int n_vifs,
2833 enum ieee80211_chanctx_switch_mode mode)
2834 {
2835 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2836 int ret;
2837
2838 /* we only support SWAP_CONTEXTS and with a single-vif right now */
2839 if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1)
2840 return -EOPNOTSUPP;
2841
2842 mutex_lock(&mvm->mutex);
2843 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
2844 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2845
2846 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2847 if (ret) {
2848 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2849 goto out_reassign;
2850 }
2851
2852 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2853 true);
2854 if (ret) {
2855 IWL_ERR(mvm,
2856 "failed to assign new_ctx during channel switch\n");
2857 goto out_remove;
2858 }
2859
2860 /* we don't support TDLS during DCM - can be caused by channel switch */
2861 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2862 iwl_mvm_teardown_tdls_peers(mvm);
2863
2864 goto out;
2865
2866 out_remove:
2867 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
2868
2869 out_reassign:
2870 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx);
2871 if (ret) {
2872 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
2873 goto out_restart;
2874 }
2875
2876 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
2877 true);
2878 if (ret) {
2879 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
2880 goto out_restart;
2881 }
2882
2883 goto out;
2884
2885 out_restart:
2886 /* things keep failing, better restart the hw */
2887 iwl_mvm_nic_restart(mvm, false);
2888
2889 out:
2890 mutex_unlock(&mvm->mutex);
2891 return ret;
2892 }
2893
2894 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2895 struct ieee80211_sta *sta,
2896 bool set)
2897 {
2898 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2899 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2900
2901 if (!mvm_sta || !mvm_sta->vif) {
2902 IWL_ERR(mvm, "Station is not associated to a vif\n");
2903 return -EINVAL;
2904 }
2905
2906 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2907 }
2908
2909 #ifdef CONFIG_NL80211_TESTMODE
2910 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2911 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2912 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
2913 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
2914 };
2915
2916 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
2917 struct ieee80211_vif *vif,
2918 void *data, int len)
2919 {
2920 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
2921 int err;
2922 u32 noa_duration;
2923
2924 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
2925 if (err)
2926 return err;
2927
2928 if (!tb[IWL_MVM_TM_ATTR_CMD])
2929 return -EINVAL;
2930
2931 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
2932 case IWL_MVM_TM_CMD_SET_NOA:
2933 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
2934 !vif->bss_conf.enable_beacon ||
2935 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
2936 return -EINVAL;
2937
2938 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
2939 if (noa_duration >= vif->bss_conf.beacon_int)
2940 return -EINVAL;
2941
2942 mvm->noa_duration = noa_duration;
2943 mvm->noa_vif = vif;
2944
2945 return iwl_mvm_update_quotas(mvm, NULL);
2946 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
2947 /* must be associated client vif - ignore authorized */
2948 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
2949 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
2950 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
2951 return -EINVAL;
2952
2953 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
2954 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2955 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
2956 }
2957
2958 return -EOPNOTSUPP;
2959 }
2960
2961 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
2962 struct ieee80211_vif *vif,
2963 void *data, int len)
2964 {
2965 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2966 int err;
2967
2968 mutex_lock(&mvm->mutex);
2969 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
2970 mutex_unlock(&mvm->mutex);
2971
2972 return err;
2973 }
2974 #endif
2975
2976 static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
2977 struct ieee80211_vif *vif,
2978 struct cfg80211_chan_def *chandef)
2979 {
2980 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2981 struct ieee80211_vif *csa_vif;
2982
2983 mutex_lock(&mvm->mutex);
2984
2985 csa_vif = rcu_dereference_protected(mvm->csa_vif,
2986 lockdep_is_held(&mvm->mutex));
2987 if (WARN(csa_vif && csa_vif->csa_active,
2988 "Another CSA is already in progress"))
2989 goto out_unlock;
2990
2991 IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
2992 chandef->center_freq1);
2993 rcu_assign_pointer(mvm->csa_vif, vif);
2994
2995 out_unlock:
2996 mutex_unlock(&mvm->mutex);
2997 }
2998
2999 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3000 struct ieee80211_vif *vif, u32 queues, bool drop)
3001 {
3002 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3003 struct iwl_mvm_vif *mvmvif;
3004 struct iwl_mvm_sta *mvmsta;
3005
3006 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3007 return;
3008
3009 mutex_lock(&mvm->mutex);
3010 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3011 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
3012
3013 if (WARN_ON_ONCE(!mvmsta))
3014 goto done;
3015
3016 if (drop) {
3017 if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
3018 IWL_ERR(mvm, "flush request fail\n");
3019 } else {
3020 iwl_trans_wait_tx_queue_empty(mvm->trans,
3021 mvmsta->tfd_queue_msk);
3022 }
3023 done:
3024 mutex_unlock(&mvm->mutex);
3025 }
3026
3027 const struct ieee80211_ops iwl_mvm_hw_ops = {
3028 .tx = iwl_mvm_mac_tx,
3029 .ampdu_action = iwl_mvm_mac_ampdu_action,
3030 .start = iwl_mvm_mac_start,
3031 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3032 .stop = iwl_mvm_mac_stop,
3033 .add_interface = iwl_mvm_mac_add_interface,
3034 .remove_interface = iwl_mvm_mac_remove_interface,
3035 .config = iwl_mvm_mac_config,
3036 .prepare_multicast = iwl_mvm_prepare_multicast,
3037 .configure_filter = iwl_mvm_configure_filter,
3038 .bss_info_changed = iwl_mvm_bss_info_changed,
3039 .hw_scan = iwl_mvm_mac_hw_scan,
3040 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3041 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3042 .sta_state = iwl_mvm_mac_sta_state,
3043 .sta_notify = iwl_mvm_mac_sta_notify,
3044 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3045 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3046 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3047 .sta_rc_update = iwl_mvm_sta_rc_update,
3048 .conf_tx = iwl_mvm_mac_conf_tx,
3049 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3050 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3051 .flush = iwl_mvm_mac_flush,
3052 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3053 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3054 .set_key = iwl_mvm_mac_set_key,
3055 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3056 .remain_on_channel = iwl_mvm_roc,
3057 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3058 .add_chanctx = iwl_mvm_add_chanctx,
3059 .remove_chanctx = iwl_mvm_remove_chanctx,
3060 .change_chanctx = iwl_mvm_change_chanctx,
3061 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3062 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3063 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3064
3065 .start_ap = iwl_mvm_start_ap_ibss,
3066 .stop_ap = iwl_mvm_stop_ap_ibss,
3067 .join_ibss = iwl_mvm_start_ap_ibss,
3068 .leave_ibss = iwl_mvm_stop_ap_ibss,
3069
3070 .set_tim = iwl_mvm_set_tim,
3071
3072 .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
3073
3074 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3075
3076 #ifdef CONFIG_PM_SLEEP
3077 /* look at d3.c */
3078 .suspend = iwl_mvm_suspend,
3079 .resume = iwl_mvm_resume,
3080 .set_wakeup = iwl_mvm_set_wakeup,
3081 .set_rekey_data = iwl_mvm_set_rekey_data,
3082 #if IS_ENABLED(CONFIG_IPV6)
3083 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3084 #endif
3085 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3086 #endif
3087 };
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