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[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
26 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63 #include <linux/kernel.h>
64 #include <linux/slab.h>
65 #include <linux/skbuff.h>
66 #include <linux/netdevice.h>
67 #include <linux/etherdevice.h>
68 #include <linux/ip.h>
69 #include <linux/if_arp.h>
70 #include <net/mac80211.h>
71 #include <net/ieee80211_radiotap.h>
72 #include <net/tcp.h>
73
74 #include "iwl-op-mode.h"
75 #include "iwl-io.h"
76 #include "mvm.h"
77 #include "sta.h"
78 #include "time-event.h"
79 #include "iwl-eeprom-parse.h"
80 #include "fw-api-scan.h"
81 #include "iwl-phy-db.h"
82 #include "testmode.h"
83 #include "iwl-fw-error-dump.h"
84 #include "iwl-prph.h"
85
86 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
87 {
88 .max = 1,
89 .types = BIT(NL80211_IFTYPE_STATION),
90 },
91 {
92 .max = 1,
93 .types = BIT(NL80211_IFTYPE_AP) |
94 BIT(NL80211_IFTYPE_P2P_CLIENT) |
95 BIT(NL80211_IFTYPE_P2P_GO),
96 },
97 {
98 .max = 1,
99 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
100 },
101 };
102
103 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
104 {
105 .num_different_channels = 1,
106 .max_interfaces = 3,
107 .limits = iwl_mvm_limits,
108 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
109 },
110 };
111
112 #ifdef CONFIG_PM_SLEEP
113 static const struct nl80211_wowlan_tcp_data_token_feature
114 iwl_mvm_wowlan_tcp_token_feature = {
115 .min_len = 0,
116 .max_len = 255,
117 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
118 };
119
120 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
121 .tok = &iwl_mvm_wowlan_tcp_token_feature,
122 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
123 sizeof(struct ethhdr) -
124 sizeof(struct iphdr) -
125 sizeof(struct tcphdr),
126 .data_interval_max = 65535, /* __le16 in API */
127 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
128 sizeof(struct ethhdr) -
129 sizeof(struct iphdr) -
130 sizeof(struct tcphdr),
131 .seq = true,
132 };
133 #endif
134
135 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
136 /*
137 * Use the reserved field to indicate magic values.
138 * these values will only be used internally by the driver,
139 * and won't make it to the fw (reserved will be 0).
140 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
141 * be the vif's ip address. in case there is not a single
142 * ip address (0, or more than 1), this attribute will
143 * be skipped.
144 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
145 * the LSB bytes of the vif's mac address
146 */
147 enum {
148 BC_FILTER_MAGIC_NONE = 0,
149 BC_FILTER_MAGIC_IP,
150 BC_FILTER_MAGIC_MAC,
151 };
152
153 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
154 {
155 /* arp */
156 .discard = 0,
157 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
158 .attrs = {
159 {
160 /* frame type - arp, hw type - ethernet */
161 .offset_type =
162 BCAST_FILTER_OFFSET_PAYLOAD_START,
163 .offset = sizeof(rfc1042_header),
164 .val = cpu_to_be32(0x08060001),
165 .mask = cpu_to_be32(0xffffffff),
166 },
167 {
168 /* arp dest ip */
169 .offset_type =
170 BCAST_FILTER_OFFSET_PAYLOAD_START,
171 .offset = sizeof(rfc1042_header) + 2 +
172 sizeof(struct arphdr) +
173 ETH_ALEN + sizeof(__be32) +
174 ETH_ALEN,
175 .mask = cpu_to_be32(0xffffffff),
176 /* mark it as special field */
177 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
178 },
179 },
180 },
181 {
182 /* dhcp offer bcast */
183 .discard = 0,
184 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
185 .attrs = {
186 {
187 /* udp dest port - 68 (bootp client)*/
188 .offset_type = BCAST_FILTER_OFFSET_IP_END,
189 .offset = offsetof(struct udphdr, dest),
190 .val = cpu_to_be32(0x00440000),
191 .mask = cpu_to_be32(0xffff0000),
192 },
193 {
194 /* dhcp - lsb bytes of client hw address */
195 .offset_type = BCAST_FILTER_OFFSET_IP_END,
196 .offset = 38,
197 .mask = cpu_to_be32(0xffffffff),
198 /* mark it as special field */
199 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
200 },
201 },
202 },
203 /* last filter must be empty */
204 {},
205 };
206 #endif
207
208 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
209 {
210 if (!iwl_mvm_is_d0i3_supported(mvm))
211 return;
212
213 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
214 spin_lock_bh(&mvm->refs_lock);
215 mvm->refs[ref_type]++;
216 spin_unlock_bh(&mvm->refs_lock);
217 iwl_trans_ref(mvm->trans);
218 }
219
220 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
221 {
222 if (!iwl_mvm_is_d0i3_supported(mvm))
223 return;
224
225 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
226 spin_lock_bh(&mvm->refs_lock);
227 WARN_ON(!mvm->refs[ref_type]--);
228 spin_unlock_bh(&mvm->refs_lock);
229 iwl_trans_unref(mvm->trans);
230 }
231
232 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
233 enum iwl_mvm_ref_type except_ref)
234 {
235 int i, j;
236
237 if (!iwl_mvm_is_d0i3_supported(mvm))
238 return;
239
240 spin_lock_bh(&mvm->refs_lock);
241 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
242 if (except_ref == i || !mvm->refs[i])
243 continue;
244
245 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
246 i, mvm->refs[i]);
247 for (j = 0; j < mvm->refs[i]; j++)
248 iwl_trans_unref(mvm->trans);
249 mvm->refs[i] = 0;
250 }
251 spin_unlock_bh(&mvm->refs_lock);
252 }
253
254 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
255 {
256 iwl_mvm_ref(mvm, ref_type);
257
258 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
259 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
260 HZ)) {
261 WARN_ON_ONCE(1);
262 iwl_mvm_unref(mvm, ref_type);
263 return -EIO;
264 }
265
266 return 0;
267 }
268
269 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
270 {
271 int i;
272
273 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
274 for (i = 0; i < NUM_PHY_CTX; i++) {
275 mvm->phy_ctxts[i].id = i;
276 mvm->phy_ctxts[i].ref = 0;
277 }
278 }
279
280 static int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
281 {
282 /* we create the 802.11 header and SSID element */
283 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID)
284 return mvm->fw->ucode_capa.max_probe_length - 24 - 2;
285 return mvm->fw->ucode_capa.max_probe_length - 24 - 34;
286 }
287
288 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
289 {
290 struct ieee80211_hw *hw = mvm->hw;
291 int num_mac, ret, i;
292
293 /* Tell mac80211 our characteristics */
294 hw->flags = IEEE80211_HW_SIGNAL_DBM |
295 IEEE80211_HW_SPECTRUM_MGMT |
296 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
297 IEEE80211_HW_QUEUE_CONTROL |
298 IEEE80211_HW_WANT_MONITOR_VIF |
299 IEEE80211_HW_SUPPORTS_PS |
300 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
301 IEEE80211_HW_AMPDU_AGGREGATION |
302 IEEE80211_HW_TIMING_BEACON_ONLY |
303 IEEE80211_HW_CONNECTION_MONITOR |
304 IEEE80211_HW_CHANCTX_STA_CSA |
305 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
306 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
307
308 hw->queues = mvm->first_agg_queue;
309 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
310 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
311 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
312 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
313 hw->rate_control_algorithm = "iwl-mvm-rs";
314
315 /*
316 * Enable 11w if advertised by firmware and software crypto
317 * is not enabled (as the firmware will interpret some mgmt
318 * packets, so enabling it with software crypto isn't safe)
319 */
320 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
321 !iwlwifi_mod_params.sw_crypto)
322 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
323
324 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
325 IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 &&
326 !iwlwifi_mod_params.uapsd_disable) {
327 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
328 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
329 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
330 }
331
332 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
333 !iwlwifi_mod_params.uapsd_disable) {
334 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
335 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
336 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
337 }
338
339 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
340 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
341
342 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
343 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
344 hw->chanctx_data_size = sizeof(u16);
345
346 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
347 BIT(NL80211_IFTYPE_P2P_CLIENT) |
348 BIT(NL80211_IFTYPE_AP) |
349 BIT(NL80211_IFTYPE_P2P_GO) |
350 BIT(NL80211_IFTYPE_P2P_DEVICE) |
351 BIT(NL80211_IFTYPE_ADHOC);
352
353 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
354 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
355 REGULATORY_DISABLE_BEACON_HINTS;
356
357 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
358 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
359
360 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW)
361 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
362
363 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
364 hw->wiphy->n_iface_combinations =
365 ARRAY_SIZE(iwl_mvm_iface_combinations);
366
367 hw->wiphy->max_remain_on_channel_duration = 10000;
368 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
369
370 /* Extract MAC address */
371 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
372 hw->wiphy->addresses = mvm->addresses;
373 hw->wiphy->n_addresses = 1;
374
375 /* Extract additional MAC addresses if available */
376 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
377 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
378
379 for (i = 1; i < num_mac; i++) {
380 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
381 ETH_ALEN);
382 mvm->addresses[i].addr[5]++;
383 hw->wiphy->n_addresses++;
384 }
385
386 iwl_mvm_reset_phy_ctxts(mvm);
387
388 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
389
390 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
391
392 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
393 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
394 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
395 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
396 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
397 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
398
399 hw->wiphy->hw_version = mvm->trans->hw_id;
400
401 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
402 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
403 else
404 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
405
406 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
407 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
408 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
409 /* we create the 802.11 header and zero length SSID IE. */
410 hw->wiphy->max_sched_scan_ie_len = SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
411
412 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
413 NL80211_FEATURE_LOW_PRIORITY_SCAN |
414 NL80211_FEATURE_P2P_GO_OPPPS;
415
416 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
417
418 /* currently FW API supports only one optional cipher scheme */
419 if (mvm->fw->cs[0].cipher) {
420 mvm->hw->n_cipher_schemes = 1;
421 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
422 }
423
424 #ifdef CONFIG_PM_SLEEP
425 if (iwl_mvm_is_d0i3_supported(mvm) &&
426 device_can_wakeup(mvm->trans->dev)) {
427 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
428 hw->wiphy->wowlan = &mvm->wowlan;
429 } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
430 mvm->trans->ops->d3_suspend &&
431 mvm->trans->ops->d3_resume &&
432 device_can_wakeup(mvm->trans->dev)) {
433 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
434 WIPHY_WOWLAN_DISCONNECT |
435 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
436 WIPHY_WOWLAN_RFKILL_RELEASE;
437 if (!iwlwifi_mod_params.sw_crypto)
438 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
439 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
440 WIPHY_WOWLAN_4WAY_HANDSHAKE;
441
442 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
443 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
444 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
445 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
446 hw->wiphy->wowlan = &mvm->wowlan;
447 }
448 #endif
449
450 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
451 /* assign default bcast filtering configuration */
452 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
453 #endif
454
455 ret = iwl_mvm_leds_init(mvm);
456 if (ret)
457 return ret;
458
459 ret = ieee80211_register_hw(mvm->hw);
460 if (ret)
461 iwl_mvm_leds_exit(mvm);
462
463 return ret;
464 }
465
466 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
467 struct ieee80211_sta *sta,
468 struct sk_buff *skb)
469 {
470 struct iwl_mvm_sta *mvmsta;
471 bool defer = false;
472
473 /*
474 * double check the IN_D0I3 flag both before and after
475 * taking the spinlock, in order to prevent taking
476 * the spinlock when not needed.
477 */
478 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
479 return false;
480
481 spin_lock(&mvm->d0i3_tx_lock);
482 /*
483 * testing the flag again ensures the skb dequeue
484 * loop (on d0i3 exit) hasn't run yet.
485 */
486 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
487 goto out;
488
489 mvmsta = iwl_mvm_sta_from_mac80211(sta);
490 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
491 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
492 goto out;
493
494 __skb_queue_tail(&mvm->d0i3_tx, skb);
495 ieee80211_stop_queues(mvm->hw);
496
497 /* trigger wakeup */
498 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
499 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
500
501 defer = true;
502 out:
503 spin_unlock(&mvm->d0i3_tx_lock);
504 return defer;
505 }
506
507 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
508 struct ieee80211_tx_control *control,
509 struct sk_buff *skb)
510 {
511 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
512 struct ieee80211_sta *sta = control->sta;
513 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
514 struct ieee80211_hdr *hdr = (void *)skb->data;
515
516 if (iwl_mvm_is_radio_killed(mvm)) {
517 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
518 goto drop;
519 }
520
521 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
522 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
523 goto drop;
524
525 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
526 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
527 ieee80211_is_mgmt(hdr->frame_control) &&
528 !ieee80211_is_deauth(hdr->frame_control) &&
529 !ieee80211_is_disassoc(hdr->frame_control) &&
530 !ieee80211_is_action(hdr->frame_control)))
531 sta = NULL;
532
533 if (sta) {
534 if (iwl_mvm_defer_tx(mvm, sta, skb))
535 return;
536 if (iwl_mvm_tx_skb(mvm, skb, sta))
537 goto drop;
538 return;
539 }
540
541 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
542 goto drop;
543 return;
544 drop:
545 ieee80211_free_txskb(hw, skb);
546 }
547
548 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
549 {
550 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
551 return false;
552 return true;
553 }
554
555 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
556 {
557 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
558 return false;
559 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
560 return true;
561
562 /* enabled by default */
563 return true;
564 }
565
566 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
567 struct ieee80211_vif *vif,
568 enum ieee80211_ampdu_mlme_action action,
569 struct ieee80211_sta *sta, u16 tid,
570 u16 *ssn, u8 buf_size)
571 {
572 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
573 int ret;
574 bool tx_agg_ref = false;
575
576 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
577 sta->addr, tid, action);
578
579 if (!(mvm->nvm_data->sku_cap_11n_enable))
580 return -EACCES;
581
582 /* return from D0i3 before starting a new Tx aggregation */
583 switch (action) {
584 case IEEE80211_AMPDU_TX_START:
585 case IEEE80211_AMPDU_TX_STOP_CONT:
586 case IEEE80211_AMPDU_TX_STOP_FLUSH:
587 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
588 case IEEE80211_AMPDU_TX_OPERATIONAL:
589 /*
590 * for tx start, wait synchronously until D0i3 exit to
591 * get the correct sequence number for the tid.
592 * additionally, some other ampdu actions use direct
593 * target access, which is not handled automatically
594 * by the trans layer (unlike commands), so wait for
595 * d0i3 exit in these cases as well.
596 */
597 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
598 if (ret)
599 return ret;
600
601 tx_agg_ref = true;
602 break;
603 default:
604 break;
605 }
606
607 mutex_lock(&mvm->mutex);
608
609 switch (action) {
610 case IEEE80211_AMPDU_RX_START:
611 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
612 ret = -EINVAL;
613 break;
614 }
615 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
616 break;
617 case IEEE80211_AMPDU_RX_STOP:
618 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
619 break;
620 case IEEE80211_AMPDU_TX_START:
621 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
622 ret = -EINVAL;
623 break;
624 }
625 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
626 break;
627 case IEEE80211_AMPDU_TX_STOP_CONT:
628 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
629 break;
630 case IEEE80211_AMPDU_TX_STOP_FLUSH:
631 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
632 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
633 break;
634 case IEEE80211_AMPDU_TX_OPERATIONAL:
635 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
636 break;
637 default:
638 WARN_ON_ONCE(1);
639 ret = -EINVAL;
640 break;
641 }
642 mutex_unlock(&mvm->mutex);
643
644 /*
645 * If the tid is marked as started, we won't use it for offloaded
646 * traffic on the next D0i3 entry. It's safe to unref.
647 */
648 if (tx_agg_ref)
649 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
650
651 return ret;
652 }
653
654 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
655 struct ieee80211_vif *vif)
656 {
657 struct iwl_mvm *mvm = data;
658 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
659
660 mvmvif->uploaded = false;
661 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
662
663 /* does this make sense at all? */
664 mvmvif->color++;
665
666 spin_lock_bh(&mvm->time_event_lock);
667 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
668 spin_unlock_bh(&mvm->time_event_lock);
669
670 mvmvif->phy_ctxt = NULL;
671 }
672
673 #ifdef CONFIG_IWLWIFI_DEBUGFS
674 static void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
675 {
676 struct iwl_fw_error_dump_file *dump_file;
677 struct iwl_fw_error_dump_data *dump_data;
678 struct iwl_fw_error_dump_info *dump_info;
679 struct iwl_mvm_dump_ptrs *fw_error_dump;
680 const struct fw_img *img;
681 u32 sram_len, sram_ofs;
682 u32 file_len, rxf_len;
683 unsigned long flags;
684 int reg_val;
685
686 lockdep_assert_held(&mvm->mutex);
687
688 if (mvm->fw_error_dump)
689 return;
690
691 fw_error_dump = kzalloc(sizeof(*mvm->fw_error_dump), GFP_KERNEL);
692 if (!fw_error_dump)
693 return;
694
695 img = &mvm->fw->img[mvm->cur_ucode];
696 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
697 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
698
699 /* reading buffer size */
700 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
701 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
702
703 /* the register holds the value divided by 128 */
704 rxf_len = rxf_len << 7;
705
706 file_len = sizeof(*dump_file) +
707 sizeof(*dump_data) * 3 +
708 sram_len +
709 rxf_len +
710 sizeof(*dump_info);
711
712 dump_file = vzalloc(file_len);
713 if (!dump_file) {
714 kfree(fw_error_dump);
715 return;
716 }
717
718 fw_error_dump->op_mode_ptr = dump_file;
719
720 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
721 dump_data = (void *)dump_file->data;
722
723 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
724 dump_data->len = cpu_to_le32(sizeof(*dump_info));
725 dump_info = (void *) dump_data->data;
726 dump_info->device_family =
727 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
728 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
729 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
730 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
731 sizeof(dump_info->fw_human_readable));
732 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
733 sizeof(dump_info->dev_human_readable));
734 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
735 sizeof(dump_info->bus_human_readable));
736
737 dump_data = iwl_fw_error_next_data(dump_data);
738 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
739 dump_data->len = cpu_to_le32(rxf_len);
740
741 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
742 u32 *rxf = (void *)dump_data->data;
743 int i;
744
745 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
746 iwl_trans_write_prph(mvm->trans,
747 RXF_LD_FENCE_OFFSET_ADDR,
748 i * sizeof(u32));
749 rxf[i] = iwl_trans_read_prph(mvm->trans,
750 RXF_FIFO_RD_FENCE_ADDR);
751 }
752 iwl_trans_release_nic_access(mvm->trans, &flags);
753 }
754
755 dump_data = iwl_fw_error_next_data(dump_data);
756 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
757 dump_data->len = cpu_to_le32(sram_len);
758 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
759 sram_len);
760
761 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
762 fw_error_dump->op_mode_len = file_len;
763 if (fw_error_dump->trans_ptr)
764 file_len += fw_error_dump->trans_ptr->len;
765 dump_file->file_len = cpu_to_le32(file_len);
766 mvm->fw_error_dump = fw_error_dump;
767 }
768 #endif
769
770 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
771 {
772 #ifdef CONFIG_IWLWIFI_DEBUGFS
773 static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL };
774
775 iwl_mvm_fw_error_dump(mvm);
776
777 /* notify the userspace about the error we had */
778 kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env);
779 #endif
780
781 iwl_trans_stop_device(mvm->trans);
782
783 mvm->scan_status = IWL_MVM_SCAN_NONE;
784
785 /* just in case one was running */
786 ieee80211_remain_on_channel_expired(mvm->hw);
787
788 ieee80211_iterate_active_interfaces_atomic(
789 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
790 iwl_mvm_cleanup_iterator, mvm);
791
792 mvm->p2p_device_vif = NULL;
793 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
794
795 iwl_mvm_reset_phy_ctxts(mvm);
796 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
797 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
798
799 ieee80211_wake_queues(mvm->hw);
800
801 /* cleanup all stale references (scan, roc), but keep the
802 * ucode_down ref until reconfig is complete */
803 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
804
805 mvm->vif_count = 0;
806 mvm->rx_ba_sessions = 0;
807 }
808
809 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
810 {
811 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
812 int ret;
813
814 mutex_lock(&mvm->mutex);
815
816 /* Clean up some internal and mac80211 state on restart */
817 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
818 iwl_mvm_restart_cleanup(mvm);
819
820 ret = iwl_mvm_up(mvm);
821
822 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
823 /* Something went wrong - we need to finish some cleanup
824 * that normally iwl_mvm_mac_restart_complete() below
825 * would do.
826 */
827 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
828 iwl_mvm_d0i3_enable_tx(mvm, NULL);
829 }
830
831 mutex_unlock(&mvm->mutex);
832
833 return ret;
834 }
835
836 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
837 {
838 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
839 int ret;
840
841 mutex_lock(&mvm->mutex);
842
843 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
844 iwl_mvm_d0i3_enable_tx(mvm, NULL);
845 ret = iwl_mvm_update_quotas(mvm, NULL);
846 if (ret)
847 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
848 ret);
849
850 /* allow transport/FW low power modes */
851 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
852
853 mutex_unlock(&mvm->mutex);
854 }
855
856 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
857 {
858 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
859
860 flush_work(&mvm->d0i3_exit_work);
861 flush_work(&mvm->async_handlers_wk);
862
863 mutex_lock(&mvm->mutex);
864
865 /* disallow low power states when the FW is down */
866 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
867
868 /* async_handlers_wk is now blocked */
869
870 /*
871 * The work item could be running or queued if the
872 * ROC time event stops just as we get here.
873 */
874 cancel_work_sync(&mvm->roc_done_wk);
875
876 iwl_trans_stop_device(mvm->trans);
877
878 iwl_mvm_async_handlers_purge(mvm);
879 /* async_handlers_list is empty and will stay empty: HW is stopped */
880
881 /* the fw is stopped, the aux sta is dead: clean up driver state */
882 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
883
884 mutex_unlock(&mvm->mutex);
885
886 /*
887 * The worker might have been waiting for the mutex, let it run and
888 * discover that its list is now empty.
889 */
890 cancel_work_sync(&mvm->async_handlers_wk);
891 }
892
893 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
894 {
895 u16 i;
896
897 lockdep_assert_held(&mvm->mutex);
898
899 for (i = 0; i < NUM_PHY_CTX; i++)
900 if (!mvm->phy_ctxts[i].ref)
901 return &mvm->phy_ctxts[i];
902
903 IWL_ERR(mvm, "No available PHY context\n");
904 return NULL;
905 }
906
907 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
908 s8 tx_power)
909 {
910 /* FW is in charge of regulatory enforcement */
911 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
912 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
913 .pwr_restriction = cpu_to_le16(tx_power),
914 };
915
916 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
917 sizeof(reduce_txpwr_cmd),
918 &reduce_txpwr_cmd);
919 }
920
921 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
922 struct ieee80211_vif *vif)
923 {
924 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
925 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
926 int ret;
927
928 /*
929 * make sure D0i3 exit is completed, otherwise a target access
930 * during tx queue configuration could be done when still in
931 * D0i3 state.
932 */
933 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
934 if (ret)
935 return ret;
936
937 /*
938 * Not much to do here. The stack will not allow interface
939 * types or combinations that we didn't advertise, so we
940 * don't really have to check the types.
941 */
942
943 mutex_lock(&mvm->mutex);
944
945 /* Allocate resources for the MAC context, and add it to the fw */
946 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
947 if (ret)
948 goto out_unlock;
949
950 /* Counting number of interfaces is needed for legacy PM */
951 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
952 mvm->vif_count++;
953
954 /*
955 * The AP binding flow can be done only after the beacon
956 * template is configured (which happens only in the mac80211
957 * start_ap() flow), and adding the broadcast station can happen
958 * only after the binding.
959 * In addition, since modifying the MAC before adding a bcast
960 * station is not allowed by the FW, delay the adding of MAC context to
961 * the point where we can also add the bcast station.
962 * In short: there's not much we can do at this point, other than
963 * allocating resources :)
964 */
965 if (vif->type == NL80211_IFTYPE_AP ||
966 vif->type == NL80211_IFTYPE_ADHOC) {
967 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
968 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
969 qmask,
970 ieee80211_vif_type_p2p(vif));
971 if (ret) {
972 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
973 goto out_release;
974 }
975
976 iwl_mvm_vif_dbgfs_register(mvm, vif);
977 goto out_unlock;
978 }
979
980 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
981 if (ret)
982 goto out_release;
983
984 ret = iwl_mvm_power_update_mac(mvm);
985 if (ret)
986 goto out_release;
987
988 /* beacon filtering */
989 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
990 if (ret)
991 goto out_remove_mac;
992
993 if (!mvm->bf_allowed_vif &&
994 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
995 mvm->bf_allowed_vif = mvmvif;
996 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
997 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
998 }
999
1000 /*
1001 * P2P_DEVICE interface does not have a channel context assigned to it,
1002 * so a dedicated PHY context is allocated to it and the corresponding
1003 * MAC context is bound to it at this stage.
1004 */
1005 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1006
1007 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1008 if (!mvmvif->phy_ctxt) {
1009 ret = -ENOSPC;
1010 goto out_free_bf;
1011 }
1012
1013 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1014 ret = iwl_mvm_binding_add_vif(mvm, vif);
1015 if (ret)
1016 goto out_unref_phy;
1017
1018 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1019 if (ret)
1020 goto out_unbind;
1021
1022 /* Save a pointer to p2p device vif, so it can later be used to
1023 * update the p2p device MAC when a GO is started/stopped */
1024 mvm->p2p_device_vif = vif;
1025 }
1026
1027 iwl_mvm_vif_dbgfs_register(mvm, vif);
1028 goto out_unlock;
1029
1030 out_unbind:
1031 iwl_mvm_binding_remove_vif(mvm, vif);
1032 out_unref_phy:
1033 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1034 out_free_bf:
1035 if (mvm->bf_allowed_vif == mvmvif) {
1036 mvm->bf_allowed_vif = NULL;
1037 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1038 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1039 }
1040 out_remove_mac:
1041 mvmvif->phy_ctxt = NULL;
1042 iwl_mvm_mac_ctxt_remove(mvm, vif);
1043 out_release:
1044 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1045 mvm->vif_count--;
1046
1047 iwl_mvm_mac_ctxt_release(mvm, vif);
1048 out_unlock:
1049 mutex_unlock(&mvm->mutex);
1050
1051 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1052
1053 return ret;
1054 }
1055
1056 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1057 struct ieee80211_vif *vif)
1058 {
1059 u32 tfd_msk = 0, ac;
1060
1061 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1062 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
1063 tfd_msk |= BIT(vif->hw_queue[ac]);
1064
1065 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
1066 tfd_msk |= BIT(vif->cab_queue);
1067
1068 if (tfd_msk) {
1069 mutex_lock(&mvm->mutex);
1070 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1071 mutex_unlock(&mvm->mutex);
1072 }
1073
1074 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1075 /*
1076 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1077 * We assume here that all the packets sent to the OFFCHANNEL
1078 * queue are sent in ROC session.
1079 */
1080 flush_work(&mvm->roc_done_wk);
1081 } else {
1082 /*
1083 * By now, all the AC queues are empty. The AGG queues are
1084 * empty too. We already got all the Tx responses for all the
1085 * packets in the queues. The drain work can have been
1086 * triggered. Flush it.
1087 */
1088 flush_work(&mvm->sta_drained_wk);
1089 }
1090 }
1091
1092 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1093 struct ieee80211_vif *vif)
1094 {
1095 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1096 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1097
1098 iwl_mvm_prepare_mac_removal(mvm, vif);
1099
1100 mutex_lock(&mvm->mutex);
1101
1102 if (mvm->bf_allowed_vif == mvmvif) {
1103 mvm->bf_allowed_vif = NULL;
1104 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1105 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1106 }
1107
1108 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1109
1110 /*
1111 * For AP/GO interface, the tear down of the resources allocated to the
1112 * interface is be handled as part of the stop_ap flow.
1113 */
1114 if (vif->type == NL80211_IFTYPE_AP ||
1115 vif->type == NL80211_IFTYPE_ADHOC) {
1116 #ifdef CONFIG_NL80211_TESTMODE
1117 if (vif == mvm->noa_vif) {
1118 mvm->noa_vif = NULL;
1119 mvm->noa_duration = 0;
1120 }
1121 #endif
1122 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
1123 goto out_release;
1124 }
1125
1126 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1127 mvm->p2p_device_vif = NULL;
1128 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1129 iwl_mvm_binding_remove_vif(mvm, vif);
1130 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1131 mvmvif->phy_ctxt = NULL;
1132 }
1133
1134 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1135 mvm->vif_count--;
1136
1137 iwl_mvm_power_update_mac(mvm);
1138 iwl_mvm_mac_ctxt_remove(mvm, vif);
1139
1140 out_release:
1141 iwl_mvm_mac_ctxt_release(mvm, vif);
1142 mutex_unlock(&mvm->mutex);
1143 }
1144
1145 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1146 {
1147 return 0;
1148 }
1149
1150 struct iwl_mvm_mc_iter_data {
1151 struct iwl_mvm *mvm;
1152 int port_id;
1153 };
1154
1155 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1156 struct ieee80211_vif *vif)
1157 {
1158 struct iwl_mvm_mc_iter_data *data = _data;
1159 struct iwl_mvm *mvm = data->mvm;
1160 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1161 int ret, len;
1162
1163 /* if we don't have free ports, mcast frames will be dropped */
1164 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1165 return;
1166
1167 if (vif->type != NL80211_IFTYPE_STATION ||
1168 !vif->bss_conf.assoc)
1169 return;
1170
1171 cmd->port_id = data->port_id++;
1172 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1173 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1174
1175 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1176 if (ret)
1177 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1178 }
1179
1180 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1181 {
1182 struct iwl_mvm_mc_iter_data iter_data = {
1183 .mvm = mvm,
1184 };
1185
1186 lockdep_assert_held(&mvm->mutex);
1187
1188 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1189 return;
1190
1191 ieee80211_iterate_active_interfaces_atomic(
1192 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1193 iwl_mvm_mc_iface_iterator, &iter_data);
1194 }
1195
1196 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1197 struct netdev_hw_addr_list *mc_list)
1198 {
1199 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1200 struct iwl_mcast_filter_cmd *cmd;
1201 struct netdev_hw_addr *addr;
1202 int addr_count = netdev_hw_addr_list_count(mc_list);
1203 bool pass_all = false;
1204 int len;
1205
1206 if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) {
1207 pass_all = true;
1208 addr_count = 0;
1209 }
1210
1211 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1212 cmd = kzalloc(len, GFP_ATOMIC);
1213 if (!cmd)
1214 return 0;
1215
1216 if (pass_all) {
1217 cmd->pass_all = 1;
1218 return (u64)(unsigned long)cmd;
1219 }
1220
1221 netdev_hw_addr_list_for_each(addr, mc_list) {
1222 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1223 cmd->count, addr->addr);
1224 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1225 addr->addr, ETH_ALEN);
1226 cmd->count++;
1227 }
1228
1229 return (u64)(unsigned long)cmd;
1230 }
1231
1232 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1233 unsigned int changed_flags,
1234 unsigned int *total_flags,
1235 u64 multicast)
1236 {
1237 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1238 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1239
1240 mutex_lock(&mvm->mutex);
1241
1242 /* replace previous configuration */
1243 kfree(mvm->mcast_filter_cmd);
1244 mvm->mcast_filter_cmd = cmd;
1245
1246 if (!cmd)
1247 goto out;
1248
1249 iwl_mvm_recalc_multicast(mvm);
1250 out:
1251 mutex_unlock(&mvm->mutex);
1252 *total_flags = 0;
1253 }
1254
1255 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1256 struct iwl_bcast_iter_data {
1257 struct iwl_mvm *mvm;
1258 struct iwl_bcast_filter_cmd *cmd;
1259 u8 current_filter;
1260 };
1261
1262 static void
1263 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1264 const struct iwl_fw_bcast_filter *in_filter,
1265 struct iwl_fw_bcast_filter *out_filter)
1266 {
1267 struct iwl_fw_bcast_filter_attr *attr;
1268 int i;
1269
1270 memcpy(out_filter, in_filter, sizeof(*out_filter));
1271
1272 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1273 attr = &out_filter->attrs[i];
1274
1275 if (!attr->mask)
1276 break;
1277
1278 switch (attr->reserved1) {
1279 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1280 if (vif->bss_conf.arp_addr_cnt != 1) {
1281 attr->mask = 0;
1282 continue;
1283 }
1284
1285 attr->val = vif->bss_conf.arp_addr_list[0];
1286 break;
1287 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1288 attr->val = *(__be32 *)&vif->addr[2];
1289 break;
1290 default:
1291 break;
1292 }
1293 attr->reserved1 = 0;
1294 out_filter->num_attrs++;
1295 }
1296 }
1297
1298 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1299 struct ieee80211_vif *vif)
1300 {
1301 struct iwl_bcast_iter_data *data = _data;
1302 struct iwl_mvm *mvm = data->mvm;
1303 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1304 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1305 struct iwl_fw_bcast_mac *bcast_mac;
1306 int i;
1307
1308 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1309 return;
1310
1311 bcast_mac = &cmd->macs[mvmvif->id];
1312
1313 /*
1314 * enable filtering only for associated stations, but not for P2P
1315 * Clients
1316 */
1317 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1318 !vif->bss_conf.assoc)
1319 return;
1320
1321 bcast_mac->default_discard = 1;
1322
1323 /* copy all configured filters */
1324 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1325 /*
1326 * Make sure we don't exceed our filters limit.
1327 * if there is still a valid filter to be configured,
1328 * be on the safe side and just allow bcast for this mac.
1329 */
1330 if (WARN_ON_ONCE(data->current_filter >=
1331 ARRAY_SIZE(cmd->filters))) {
1332 bcast_mac->default_discard = 0;
1333 bcast_mac->attached_filters = 0;
1334 break;
1335 }
1336
1337 iwl_mvm_set_bcast_filter(vif,
1338 &mvm->bcast_filters[i],
1339 &cmd->filters[data->current_filter]);
1340
1341 /* skip current filter if it contains no attributes */
1342 if (!cmd->filters[data->current_filter].num_attrs)
1343 continue;
1344
1345 /* attach the filter to current mac */
1346 bcast_mac->attached_filters |=
1347 cpu_to_le16(BIT(data->current_filter));
1348
1349 data->current_filter++;
1350 }
1351 }
1352
1353 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1354 struct iwl_bcast_filter_cmd *cmd)
1355 {
1356 struct iwl_bcast_iter_data iter_data = {
1357 .mvm = mvm,
1358 .cmd = cmd,
1359 };
1360
1361 memset(cmd, 0, sizeof(*cmd));
1362 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1363 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1364
1365 #ifdef CONFIG_IWLWIFI_DEBUGFS
1366 /* use debugfs filters/macs if override is configured */
1367 if (mvm->dbgfs_bcast_filtering.override) {
1368 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1369 sizeof(cmd->filters));
1370 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1371 sizeof(cmd->macs));
1372 return true;
1373 }
1374 #endif
1375
1376 /* if no filters are configured, do nothing */
1377 if (!mvm->bcast_filters)
1378 return false;
1379
1380 /* configure and attach these filters for each associated sta vif */
1381 ieee80211_iterate_active_interfaces(
1382 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1383 iwl_mvm_bcast_filter_iterator, &iter_data);
1384
1385 return true;
1386 }
1387 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1388 struct ieee80211_vif *vif)
1389 {
1390 struct iwl_bcast_filter_cmd cmd;
1391
1392 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1393 return 0;
1394
1395 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1396 return 0;
1397
1398 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1399 sizeof(cmd), &cmd);
1400 }
1401 #else
1402 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1403 struct ieee80211_vif *vif)
1404 {
1405 return 0;
1406 }
1407 #endif
1408
1409 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1410 struct ieee80211_vif *vif,
1411 struct ieee80211_bss_conf *bss_conf,
1412 u32 changes)
1413 {
1414 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1415 int ret;
1416
1417 /*
1418 * Re-calculate the tsf id, as the master-slave relations depend on the
1419 * beacon interval, which was not known when the station interface was
1420 * added.
1421 */
1422 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1423 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1424
1425 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false);
1426 if (ret)
1427 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1428
1429 if (changes & BSS_CHANGED_ASSOC) {
1430 if (bss_conf->assoc) {
1431 /* add quota for this interface */
1432 ret = iwl_mvm_update_quotas(mvm, NULL);
1433 if (ret) {
1434 IWL_ERR(mvm, "failed to update quotas\n");
1435 return;
1436 }
1437
1438 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1439 &mvm->status)) {
1440 /*
1441 * If we're restarting then the firmware will
1442 * obviously have lost synchronisation with
1443 * the AP. It will attempt to synchronise by
1444 * itself, but we can make it more reliable by
1445 * scheduling a session protection time event.
1446 *
1447 * The firmware needs to receive a beacon to
1448 * catch up with synchronisation, use 110% of
1449 * the beacon interval.
1450 *
1451 * Set a large maximum delay to allow for more
1452 * than a single interface.
1453 */
1454 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1455 iwl_mvm_protect_session(mvm, vif, dur, dur,
1456 5 * dur);
1457 }
1458
1459 iwl_mvm_sf_update(mvm, vif, false);
1460 iwl_mvm_power_vif_assoc(mvm, vif);
1461 if (vif->p2p)
1462 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1463 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1464 /*
1465 * If update fails - SF might be running in associated
1466 * mode while disassociated - which is forbidden.
1467 */
1468 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1469 "Failed to update SF upon disassociation\n");
1470
1471 /* remove AP station now that the MAC is unassoc */
1472 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1473 if (ret)
1474 IWL_ERR(mvm, "failed to remove AP station\n");
1475
1476 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1477 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1478 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1479 /* remove quota for this interface */
1480 ret = iwl_mvm_update_quotas(mvm, NULL);
1481 if (ret)
1482 IWL_ERR(mvm, "failed to update quotas\n");
1483
1484 if (vif->p2p)
1485 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1486 }
1487
1488 iwl_mvm_recalc_multicast(mvm);
1489 iwl_mvm_configure_bcast_filter(mvm, vif);
1490
1491 /* reset rssi values */
1492 mvmvif->bf_data.ave_beacon_signal = 0;
1493
1494 iwl_mvm_bt_coex_vif_change(mvm);
1495 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1496 IEEE80211_SMPS_AUTOMATIC);
1497 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1498 /*
1499 * We received a beacon _after_ association so
1500 * remove the session protection.
1501 */
1502 iwl_mvm_remove_time_event(mvm, mvmvif,
1503 &mvmvif->time_event_data);
1504 } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
1505 BSS_CHANGED_QOS)) {
1506 ret = iwl_mvm_power_update_mac(mvm);
1507 if (ret)
1508 IWL_ERR(mvm, "failed to update power mode\n");
1509 }
1510
1511 if (changes & BSS_CHANGED_BEACON_INFO) {
1512 iwl_mvm_sf_update(mvm, vif, false);
1513 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1514 }
1515
1516 if (changes & BSS_CHANGED_TXPOWER) {
1517 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1518 bss_conf->txpower);
1519 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1520 }
1521
1522 if (changes & BSS_CHANGED_CQM) {
1523 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1524 /* reset cqm events tracking */
1525 mvmvif->bf_data.last_cqm_event = 0;
1526 if (mvmvif->bf_data.bf_enabled) {
1527 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1528 if (ret)
1529 IWL_ERR(mvm,
1530 "failed to update CQM thresholds\n");
1531 }
1532 }
1533
1534 if (changes & BSS_CHANGED_ARP_FILTER) {
1535 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1536 iwl_mvm_configure_bcast_filter(mvm, vif);
1537 }
1538 }
1539
1540 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1541 struct ieee80211_vif *vif)
1542 {
1543 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1544 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1545 int ret;
1546
1547 /*
1548 * iwl_mvm_mac_ctxt_add() might read directly from the device
1549 * (the system time), so make sure it is available.
1550 */
1551 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1552 if (ret)
1553 return ret;
1554
1555 mutex_lock(&mvm->mutex);
1556
1557 /* Send the beacon template */
1558 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1559 if (ret)
1560 goto out_unlock;
1561
1562 /*
1563 * Re-calculate the tsf id, as the master-slave relations depend on the
1564 * beacon interval, which was not known when the AP interface was added.
1565 */
1566 if (vif->type == NL80211_IFTYPE_AP)
1567 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1568
1569 /* Add the mac context */
1570 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1571 if (ret)
1572 goto out_unlock;
1573
1574 /* Perform the binding */
1575 ret = iwl_mvm_binding_add_vif(mvm, vif);
1576 if (ret)
1577 goto out_remove;
1578
1579 /* Send the bcast station. At this stage the TBTT and DTIM time events
1580 * are added and applied to the scheduler */
1581 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1582 if (ret)
1583 goto out_unbind;
1584
1585 /* must be set before quota calculations */
1586 mvmvif->ap_ibss_active = true;
1587
1588 /* power updated needs to be done before quotas */
1589 iwl_mvm_power_update_mac(mvm);
1590
1591 ret = iwl_mvm_update_quotas(mvm, NULL);
1592 if (ret)
1593 goto out_quota_failed;
1594
1595 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1596 if (vif->p2p && mvm->p2p_device_vif)
1597 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
1598
1599 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1600
1601 iwl_mvm_bt_coex_vif_change(mvm);
1602
1603 mutex_unlock(&mvm->mutex);
1604 return 0;
1605
1606 out_quota_failed:
1607 iwl_mvm_power_update_mac(mvm);
1608 mvmvif->ap_ibss_active = false;
1609 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1610 out_unbind:
1611 iwl_mvm_binding_remove_vif(mvm, vif);
1612 out_remove:
1613 iwl_mvm_mac_ctxt_remove(mvm, vif);
1614 out_unlock:
1615 mutex_unlock(&mvm->mutex);
1616 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
1617 return ret;
1618 }
1619
1620 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1621 struct ieee80211_vif *vif)
1622 {
1623 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1624 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1625
1626 iwl_mvm_prepare_mac_removal(mvm, vif);
1627
1628 mutex_lock(&mvm->mutex);
1629
1630 /* Handle AP stop while in CSA */
1631 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1632 iwl_mvm_remove_time_event(mvm, mvmvif,
1633 &mvmvif->time_event_data);
1634 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1635 }
1636
1637 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1638 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1639 mvm->csa_tx_block_bcn_timeout = 0;
1640 }
1641
1642 mvmvif->ap_ibss_active = false;
1643 mvm->ap_last_beacon_gp2 = 0;
1644
1645 iwl_mvm_bt_coex_vif_change(mvm);
1646
1647 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1648
1649 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1650 if (vif->p2p && mvm->p2p_device_vif)
1651 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
1652
1653 iwl_mvm_update_quotas(mvm, NULL);
1654 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1655 iwl_mvm_binding_remove_vif(mvm, vif);
1656
1657 iwl_mvm_power_update_mac(mvm);
1658
1659 iwl_mvm_mac_ctxt_remove(mvm, vif);
1660
1661 mutex_unlock(&mvm->mutex);
1662 }
1663
1664 static void
1665 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1666 struct ieee80211_vif *vif,
1667 struct ieee80211_bss_conf *bss_conf,
1668 u32 changes)
1669 {
1670 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1671
1672 /* Changes will be applied when the AP/IBSS is started */
1673 if (!mvmvif->ap_ibss_active)
1674 return;
1675
1676 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1677 BSS_CHANGED_BANDWIDTH) &&
1678 iwl_mvm_mac_ctxt_changed(mvm, vif, false))
1679 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1680
1681 /* Need to send a new beacon template to the FW */
1682 if (changes & BSS_CHANGED_BEACON &&
1683 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1684 IWL_WARN(mvm, "Failed updating beacon data\n");
1685 }
1686
1687 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1688 struct ieee80211_vif *vif,
1689 struct ieee80211_bss_conf *bss_conf,
1690 u32 changes)
1691 {
1692 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1693
1694 /*
1695 * iwl_mvm_bss_info_changed_station() might call
1696 * iwl_mvm_protect_session(), which reads directly from
1697 * the device (the system time), so make sure it is available.
1698 */
1699 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1700 return;
1701
1702 mutex_lock(&mvm->mutex);
1703
1704 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
1705 iwl_mvm_scan_offload_stop(mvm, true);
1706
1707 switch (vif->type) {
1708 case NL80211_IFTYPE_STATION:
1709 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1710 break;
1711 case NL80211_IFTYPE_AP:
1712 case NL80211_IFTYPE_ADHOC:
1713 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1714 break;
1715 default:
1716 /* shouldn't happen */
1717 WARN_ON_ONCE(1);
1718 }
1719
1720 mutex_unlock(&mvm->mutex);
1721 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
1722 }
1723
1724 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1725 enum iwl_scan_status scan_type)
1726 {
1727 int ret;
1728 bool wait_for_handlers = false;
1729
1730 mutex_lock(&mvm->mutex);
1731
1732 if (mvm->scan_status != scan_type) {
1733 ret = 0;
1734 /* make sure there are no pending notifications */
1735 wait_for_handlers = true;
1736 goto out;
1737 }
1738
1739 switch (scan_type) {
1740 case IWL_MVM_SCAN_SCHED:
1741 ret = iwl_mvm_scan_offload_stop(mvm, true);
1742 break;
1743 case IWL_MVM_SCAN_OS:
1744 ret = iwl_mvm_cancel_scan(mvm);
1745 break;
1746 case IWL_MVM_SCAN_NONE:
1747 default:
1748 WARN_ON_ONCE(1);
1749 ret = -EINVAL;
1750 break;
1751 }
1752 if (ret)
1753 goto out;
1754
1755 wait_for_handlers = true;
1756 out:
1757 mutex_unlock(&mvm->mutex);
1758
1759 /* make sure we consume the completion notification */
1760 if (wait_for_handlers)
1761 iwl_mvm_wait_for_async_handlers(mvm);
1762
1763 return ret;
1764 }
1765 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1766 struct ieee80211_vif *vif,
1767 struct ieee80211_scan_request *hw_req)
1768 {
1769 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1770 struct cfg80211_scan_request *req = &hw_req->req;
1771 int ret;
1772
1773 if (req->n_channels == 0 ||
1774 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1775 return -EINVAL;
1776
1777 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1778 if (ret)
1779 return ret;
1780
1781 mutex_lock(&mvm->mutex);
1782
1783 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1784 ret = -EBUSY;
1785 goto out;
1786 }
1787
1788 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1789
1790 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1791 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1792 else
1793 ret = iwl_mvm_scan_request(mvm, vif, req);
1794
1795 if (ret)
1796 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1797 out:
1798 mutex_unlock(&mvm->mutex);
1799 return ret;
1800 }
1801
1802 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1803 struct ieee80211_vif *vif)
1804 {
1805 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1806
1807 mutex_lock(&mvm->mutex);
1808
1809 iwl_mvm_cancel_scan(mvm);
1810
1811 mutex_unlock(&mvm->mutex);
1812 }
1813
1814 static void
1815 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1816 struct ieee80211_sta *sta, u16 tids,
1817 int num_frames,
1818 enum ieee80211_frame_release_type reason,
1819 bool more_data)
1820 {
1821 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1822
1823 /* Called when we need to transmit (a) frame(s) from mac80211 */
1824
1825 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1826 tids, more_data, false);
1827 }
1828
1829 static void
1830 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1831 struct ieee80211_sta *sta, u16 tids,
1832 int num_frames,
1833 enum ieee80211_frame_release_type reason,
1834 bool more_data)
1835 {
1836 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1837
1838 /* Called when we need to transmit (a) frame(s) from agg queue */
1839
1840 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1841 tids, more_data, true);
1842 }
1843
1844 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1845 struct ieee80211_vif *vif,
1846 enum sta_notify_cmd cmd,
1847 struct ieee80211_sta *sta)
1848 {
1849 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1850 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1851 int tid;
1852
1853 switch (cmd) {
1854 case STA_NOTIFY_SLEEP:
1855 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
1856 ieee80211_sta_block_awake(hw, sta, true);
1857 spin_lock_bh(&mvmsta->lock);
1858 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1859 struct iwl_mvm_tid_data *tid_data;
1860
1861 tid_data = &mvmsta->tid_data[tid];
1862 if (tid_data->state != IWL_AGG_ON &&
1863 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
1864 continue;
1865 if (iwl_mvm_tid_queued(tid_data) == 0)
1866 continue;
1867 ieee80211_sta_set_buffered(sta, tid, true);
1868 }
1869 spin_unlock_bh(&mvmsta->lock);
1870 /*
1871 * The fw updates the STA to be asleep. Tx packets on the Tx
1872 * queues to this station will not be transmitted. The fw will
1873 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1874 */
1875 break;
1876 case STA_NOTIFY_AWAKE:
1877 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1878 break;
1879 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1880 break;
1881 default:
1882 break;
1883 }
1884 }
1885
1886 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1887 struct ieee80211_vif *vif,
1888 struct ieee80211_sta *sta)
1889 {
1890 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1891 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1892
1893 /*
1894 * This is called before mac80211 does RCU synchronisation,
1895 * so here we already invalidate our internal RCU-protected
1896 * station pointer. The rest of the code will thus no longer
1897 * be able to find the station this way, and we don't rely
1898 * on further RCU synchronisation after the sta_state()
1899 * callback deleted the station.
1900 */
1901 mutex_lock(&mvm->mutex);
1902 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1903 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1904 ERR_PTR(-ENOENT));
1905 mutex_unlock(&mvm->mutex);
1906 }
1907
1908 int iwl_mvm_tdls_sta_count(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1909 {
1910 struct ieee80211_sta *sta;
1911 struct iwl_mvm_sta *mvmsta;
1912 int count = 0;
1913 int i;
1914
1915 lockdep_assert_held(&mvm->mutex);
1916
1917 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1918 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1919 lockdep_is_held(&mvm->mutex));
1920 if (!sta || IS_ERR(sta) || !sta->tdls)
1921 continue;
1922
1923 if (vif) {
1924 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1925 if (mvmsta->vif != vif)
1926 continue;
1927 }
1928
1929 count++;
1930 }
1931
1932 return count;
1933 }
1934
1935 static void iwl_mvm_recalc_tdls_state(struct iwl_mvm *mvm,
1936 struct ieee80211_vif *vif,
1937 bool sta_added)
1938 {
1939 int tdls_sta_cnt = iwl_mvm_tdls_sta_count(mvm, vif);
1940
1941 /*
1942 * Disable ps when the first TDLS sta is added and re-enable it
1943 * when the last TDLS sta is removed
1944 */
1945 if ((tdls_sta_cnt == 1 && sta_added) ||
1946 (tdls_sta_cnt == 0 && !sta_added))
1947 iwl_mvm_power_update_mac(mvm);
1948 }
1949
1950 static void iwl_mvm_teardown_tdls_peers(struct iwl_mvm *mvm)
1951 {
1952 struct ieee80211_sta *sta;
1953 struct iwl_mvm_sta *mvmsta;
1954 int i;
1955
1956 lockdep_assert_held(&mvm->mutex);
1957
1958 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1959 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1960 lockdep_is_held(&mvm->mutex));
1961 if (!sta || IS_ERR(sta) || !sta->tdls)
1962 continue;
1963
1964 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1965 ieee80211_tdls_oper_request(mvmsta->vif, sta->addr,
1966 NL80211_TDLS_TEARDOWN,
1967 WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED,
1968 GFP_KERNEL);
1969 }
1970 }
1971
1972 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1973 struct ieee80211_vif *vif,
1974 struct ieee80211_sta *sta,
1975 enum ieee80211_sta_state old_state,
1976 enum ieee80211_sta_state new_state)
1977 {
1978 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1979 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1980 int ret;
1981
1982 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1983 sta->addr, old_state, new_state);
1984
1985 /* this would be a mac80211 bug ... but don't crash */
1986 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1987 return -EINVAL;
1988
1989 /* if a STA is being removed, reuse its ID */
1990 flush_work(&mvm->sta_drained_wk);
1991
1992 mutex_lock(&mvm->mutex);
1993 if (old_state == IEEE80211_STA_NOTEXIST &&
1994 new_state == IEEE80211_STA_NONE) {
1995 /*
1996 * Firmware bug - it'll crash if the beacon interval is less
1997 * than 16. We can't avoid connecting at all, so refuse the
1998 * station state change, this will cause mac80211 to abandon
1999 * attempts to connect to this AP, and eventually wpa_s will
2000 * blacklist the AP...
2001 */
2002 if (vif->type == NL80211_IFTYPE_STATION &&
2003 vif->bss_conf.beacon_int < 16) {
2004 IWL_ERR(mvm,
2005 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2006 sta->addr, vif->bss_conf.beacon_int);
2007 ret = -EINVAL;
2008 goto out_unlock;
2009 }
2010
2011 if (sta->tdls &&
2012 (vif->p2p ||
2013 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2014 IWL_MVM_TDLS_STA_COUNT ||
2015 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2016 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2017 ret = -EBUSY;
2018 goto out_unlock;
2019 }
2020
2021 ret = iwl_mvm_add_sta(mvm, vif, sta);
2022 if (sta->tdls && ret == 0)
2023 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2024 } else if (old_state == IEEE80211_STA_NONE &&
2025 new_state == IEEE80211_STA_AUTH) {
2026 /*
2027 * EBS may be disabled due to previous failures reported by FW.
2028 * Reset EBS status here assuming environment has been changed.
2029 */
2030 mvm->last_ebs_successful = true;
2031 ret = 0;
2032 } else if (old_state == IEEE80211_STA_AUTH &&
2033 new_state == IEEE80211_STA_ASSOC) {
2034 ret = iwl_mvm_update_sta(mvm, vif, sta);
2035 if (ret == 0)
2036 iwl_mvm_rs_rate_init(mvm, sta,
2037 mvmvif->phy_ctxt->channel->band,
2038 true);
2039 } else if (old_state == IEEE80211_STA_ASSOC &&
2040 new_state == IEEE80211_STA_AUTHORIZED) {
2041
2042 /* we don't support TDLS during DCM */
2043 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2044 iwl_mvm_teardown_tdls_peers(mvm);
2045
2046 /* enable beacon filtering */
2047 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2048 ret = 0;
2049 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2050 new_state == IEEE80211_STA_ASSOC) {
2051 /* disable beacon filtering */
2052 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2053 ret = 0;
2054 } else if (old_state == IEEE80211_STA_ASSOC &&
2055 new_state == IEEE80211_STA_AUTH) {
2056 ret = 0;
2057 } else if (old_state == IEEE80211_STA_AUTH &&
2058 new_state == IEEE80211_STA_NONE) {
2059 ret = 0;
2060 } else if (old_state == IEEE80211_STA_NONE &&
2061 new_state == IEEE80211_STA_NOTEXIST) {
2062 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2063 if (sta->tdls)
2064 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2065 } else {
2066 ret = -EIO;
2067 }
2068 out_unlock:
2069 mutex_unlock(&mvm->mutex);
2070
2071 return ret;
2072 }
2073
2074 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2075 {
2076 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2077
2078 mvm->rts_threshold = value;
2079
2080 return 0;
2081 }
2082
2083 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2084 struct ieee80211_vif *vif,
2085 struct ieee80211_sta *sta, u32 changed)
2086 {
2087 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2088
2089 if (vif->type == NL80211_IFTYPE_STATION &&
2090 changed & IEEE80211_RC_NSS_CHANGED)
2091 iwl_mvm_sf_update(mvm, vif, false);
2092 }
2093
2094 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2095 struct ieee80211_vif *vif, u16 ac,
2096 const struct ieee80211_tx_queue_params *params)
2097 {
2098 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2099 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2100
2101 mvmvif->queue_params[ac] = *params;
2102
2103 /*
2104 * No need to update right away, we'll get BSS_CHANGED_QOS
2105 * The exception is P2P_DEVICE interface which needs immediate update.
2106 */
2107 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2108 int ret;
2109
2110 mutex_lock(&mvm->mutex);
2111 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false);
2112 mutex_unlock(&mvm->mutex);
2113 return ret;
2114 }
2115 return 0;
2116 }
2117
2118 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2119 struct ieee80211_vif *vif)
2120 {
2121 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2122 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2123 200 + vif->bss_conf.beacon_int);
2124 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2125 100 + vif->bss_conf.beacon_int);
2126
2127 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2128 return;
2129
2130 /*
2131 * iwl_mvm_protect_session() reads directly from the device
2132 * (the system time), so make sure it is available.
2133 */
2134 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2135 return;
2136
2137 mutex_lock(&mvm->mutex);
2138 /* Try really hard to protect the session and hear a beacon */
2139 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
2140 mutex_unlock(&mvm->mutex);
2141
2142 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2143 }
2144
2145 static void iwl_mvm_mac_mgd_protect_tdls_discover(struct ieee80211_hw *hw,
2146 struct ieee80211_vif *vif)
2147 {
2148 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2149 u32 duration = 2 * vif->bss_conf.dtim_period * vif->bss_conf.beacon_int;
2150
2151 /*
2152 * iwl_mvm_protect_session() reads directly from the device
2153 * (the system time), so make sure it is available.
2154 */
2155 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_TDLS))
2156 return;
2157
2158 mutex_lock(&mvm->mutex);
2159 /* Protect the session to hear the TDLS setup response on the channel */
2160 iwl_mvm_protect_session(mvm, vif, duration, duration, 100);
2161 mutex_unlock(&mvm->mutex);
2162
2163 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_TDLS);
2164 }
2165
2166 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2167 struct ieee80211_vif *vif,
2168 struct cfg80211_sched_scan_request *req,
2169 struct ieee80211_scan_ies *ies)
2170 {
2171 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2172 int ret;
2173
2174 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2175 if (ret)
2176 return ret;
2177
2178 mutex_lock(&mvm->mutex);
2179
2180 if (!iwl_mvm_is_idle(mvm)) {
2181 ret = -EBUSY;
2182 goto out;
2183 }
2184
2185 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2186 ret = -EBUSY;
2187 goto out;
2188 }
2189
2190 mvm->scan_status = IWL_MVM_SCAN_SCHED;
2191
2192 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
2193 ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
2194 if (ret)
2195 goto err;
2196 }
2197
2198 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2199 if (ret)
2200 goto err;
2201
2202 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
2203 ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies);
2204 else
2205 ret = iwl_mvm_sched_scan_start(mvm, req);
2206
2207 if (!ret)
2208 goto out;
2209 err:
2210 mvm->scan_status = IWL_MVM_SCAN_NONE;
2211 out:
2212 mutex_unlock(&mvm->mutex);
2213 return ret;
2214 }
2215
2216 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2217 struct ieee80211_vif *vif)
2218 {
2219 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2220 int ret;
2221
2222 mutex_lock(&mvm->mutex);
2223 ret = iwl_mvm_scan_offload_stop(mvm, false);
2224 mutex_unlock(&mvm->mutex);
2225 iwl_mvm_wait_for_async_handlers(mvm);
2226
2227 return ret;
2228 }
2229
2230 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2231 enum set_key_cmd cmd,
2232 struct ieee80211_vif *vif,
2233 struct ieee80211_sta *sta,
2234 struct ieee80211_key_conf *key)
2235 {
2236 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2237 int ret;
2238
2239 if (iwlwifi_mod_params.sw_crypto) {
2240 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2241 return -EOPNOTSUPP;
2242 }
2243
2244 switch (key->cipher) {
2245 case WLAN_CIPHER_SUITE_TKIP:
2246 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2247 /* fall-through */
2248 case WLAN_CIPHER_SUITE_CCMP:
2249 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2250 break;
2251 case WLAN_CIPHER_SUITE_AES_CMAC:
2252 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2253 break;
2254 case WLAN_CIPHER_SUITE_WEP40:
2255 case WLAN_CIPHER_SUITE_WEP104:
2256 /*
2257 * Support for TX only, at least for now, so accept
2258 * the key and do nothing else. Then mac80211 will
2259 * pass it for TX but we don't have to use it for RX.
2260 */
2261 return 0;
2262 default:
2263 /* currently FW supports only one optional cipher scheme */
2264 if (hw->n_cipher_schemes &&
2265 hw->cipher_schemes->cipher == key->cipher)
2266 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2267 else
2268 return -EOPNOTSUPP;
2269 }
2270
2271 mutex_lock(&mvm->mutex);
2272
2273 switch (cmd) {
2274 case SET_KEY:
2275 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2276 vif->type == NL80211_IFTYPE_AP) && !sta) {
2277 /*
2278 * GTK on AP interface is a TX-only key, return 0;
2279 * on IBSS they're per-station and because we're lazy
2280 * we don't support them for RX, so do the same.
2281 */
2282 ret = 0;
2283 key->hw_key_idx = STA_KEY_IDX_INVALID;
2284 break;
2285 }
2286
2287 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2288 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2289 if (ret) {
2290 IWL_WARN(mvm, "set key failed\n");
2291 /*
2292 * can't add key for RX, but we don't need it
2293 * in the device for TX so still return 0
2294 */
2295 key->hw_key_idx = STA_KEY_IDX_INVALID;
2296 ret = 0;
2297 }
2298
2299 break;
2300 case DISABLE_KEY:
2301 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2302 ret = 0;
2303 break;
2304 }
2305
2306 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2307 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2308 break;
2309 default:
2310 ret = -EINVAL;
2311 }
2312
2313 mutex_unlock(&mvm->mutex);
2314 return ret;
2315 }
2316
2317 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2318 struct ieee80211_vif *vif,
2319 struct ieee80211_key_conf *keyconf,
2320 struct ieee80211_sta *sta,
2321 u32 iv32, u16 *phase1key)
2322 {
2323 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2324
2325 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2326 return;
2327
2328 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2329 }
2330
2331
2332 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2333 struct iwl_rx_packet *pkt, void *data)
2334 {
2335 struct iwl_mvm *mvm =
2336 container_of(notif_wait, struct iwl_mvm, notif_wait);
2337 struct iwl_hs20_roc_res *resp;
2338 int resp_len = iwl_rx_packet_payload_len(pkt);
2339 struct iwl_mvm_time_event_data *te_data = data;
2340
2341 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2342 return true;
2343
2344 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2345 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2346 return true;
2347 }
2348
2349 resp = (void *)pkt->data;
2350
2351 IWL_DEBUG_TE(mvm,
2352 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2353 resp->status, resp->event_unique_id);
2354
2355 te_data->uid = le32_to_cpu(resp->event_unique_id);
2356 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2357 te_data->uid);
2358
2359 spin_lock_bh(&mvm->time_event_lock);
2360 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2361 spin_unlock_bh(&mvm->time_event_lock);
2362
2363 return true;
2364 }
2365
2366 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2367 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2368 struct ieee80211_channel *channel,
2369 struct ieee80211_vif *vif,
2370 int duration)
2371 {
2372 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2373 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2374 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2375 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2376 struct iwl_notification_wait wait_time_event;
2377 struct iwl_hs20_roc_req aux_roc_req = {
2378 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2379 .id_and_color =
2380 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2381 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2382 /* Set the channel info data */
2383 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2384 PHY_BAND_24 : PHY_BAND_5,
2385 .channel_info.channel = channel->hw_value,
2386 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2387 /* Set the time and duration */
2388 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2389 .apply_time_max_delay =
2390 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2391 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2392 };
2393
2394 /* Set the node address */
2395 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2396
2397 te_data->vif = vif;
2398 te_data->duration = duration;
2399 te_data->id = HOT_SPOT_CMD;
2400
2401 lockdep_assert_held(&mvm->mutex);
2402
2403 spin_lock_bh(&mvm->time_event_lock);
2404 list_add_tail(&te_data->list, &mvm->time_event_list);
2405 spin_unlock_bh(&mvm->time_event_lock);
2406
2407 /*
2408 * Use a notification wait, which really just processes the
2409 * command response and doesn't wait for anything, in order
2410 * to be able to process the response and get the UID inside
2411 * the RX path. Using CMD_WANT_SKB doesn't work because it
2412 * stores the buffer and then wakes up this thread, by which
2413 * time another notification (that the time event started)
2414 * might already be processed unsuccessfully.
2415 */
2416 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2417 time_event_response,
2418 ARRAY_SIZE(time_event_response),
2419 iwl_mvm_rx_aux_roc, te_data);
2420
2421 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2422 &aux_roc_req);
2423
2424 if (res) {
2425 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2426 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2427 goto out_clear_te;
2428 }
2429
2430 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2431 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2432 /* should never fail */
2433 WARN_ON_ONCE(res);
2434
2435 if (res) {
2436 out_clear_te:
2437 spin_lock_bh(&mvm->time_event_lock);
2438 iwl_mvm_te_clear_data(mvm, te_data);
2439 spin_unlock_bh(&mvm->time_event_lock);
2440 }
2441
2442 return res;
2443 }
2444
2445 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2446 struct ieee80211_vif *vif,
2447 struct ieee80211_channel *channel,
2448 int duration,
2449 enum ieee80211_roc_type type)
2450 {
2451 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2452 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2453 struct cfg80211_chan_def chandef;
2454 struct iwl_mvm_phy_ctxt *phy_ctxt;
2455 int ret, i;
2456
2457 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2458 duration, type);
2459
2460 switch (vif->type) {
2461 case NL80211_IFTYPE_STATION:
2462 /* Use aux roc framework (HS20) */
2463 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2464 vif, duration);
2465 return ret;
2466 case NL80211_IFTYPE_P2P_DEVICE:
2467 /* handle below */
2468 break;
2469 default:
2470 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2471 return -EINVAL;
2472 }
2473
2474 mutex_lock(&mvm->mutex);
2475
2476 for (i = 0; i < NUM_PHY_CTX; i++) {
2477 phy_ctxt = &mvm->phy_ctxts[i];
2478 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2479 continue;
2480
2481 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2482 /*
2483 * Unbind the P2P_DEVICE from the current PHY context,
2484 * and if the PHY context is not used remove it.
2485 */
2486 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2487 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2488 goto out_unlock;
2489
2490 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2491
2492 /* Bind the P2P_DEVICE to the current PHY Context */
2493 mvmvif->phy_ctxt = phy_ctxt;
2494
2495 ret = iwl_mvm_binding_add_vif(mvm, vif);
2496 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2497 goto out_unlock;
2498
2499 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2500 goto schedule_time_event;
2501 }
2502 }
2503
2504 /* Need to update the PHY context only if the ROC channel changed */
2505 if (channel == mvmvif->phy_ctxt->channel)
2506 goto schedule_time_event;
2507
2508 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2509
2510 /*
2511 * Change the PHY context configuration as it is currently referenced
2512 * only by the P2P Device MAC
2513 */
2514 if (mvmvif->phy_ctxt->ref == 1) {
2515 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2516 &chandef, 1, 1);
2517 if (ret)
2518 goto out_unlock;
2519 } else {
2520 /*
2521 * The PHY context is shared with other MACs. Need to remove the
2522 * P2P Device from the binding, allocate an new PHY context and
2523 * create a new binding
2524 */
2525 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2526 if (!phy_ctxt) {
2527 ret = -ENOSPC;
2528 goto out_unlock;
2529 }
2530
2531 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2532 1, 1);
2533 if (ret) {
2534 IWL_ERR(mvm, "Failed to change PHY context\n");
2535 goto out_unlock;
2536 }
2537
2538 /* Unbind the P2P_DEVICE from the current PHY context */
2539 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2540 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2541 goto out_unlock;
2542
2543 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2544
2545 /* Bind the P2P_DEVICE to the new allocated PHY context */
2546 mvmvif->phy_ctxt = phy_ctxt;
2547
2548 ret = iwl_mvm_binding_add_vif(mvm, vif);
2549 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2550 goto out_unlock;
2551
2552 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2553 }
2554
2555 schedule_time_event:
2556 /* Schedule the time events */
2557 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2558
2559 out_unlock:
2560 mutex_unlock(&mvm->mutex);
2561 IWL_DEBUG_MAC80211(mvm, "leave\n");
2562 return ret;
2563 }
2564
2565 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2566 {
2567 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2568
2569 IWL_DEBUG_MAC80211(mvm, "enter\n");
2570
2571 mutex_lock(&mvm->mutex);
2572 iwl_mvm_stop_p2p_roc(mvm);
2573 mutex_unlock(&mvm->mutex);
2574
2575 IWL_DEBUG_MAC80211(mvm, "leave\n");
2576 return 0;
2577 }
2578
2579 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2580 struct ieee80211_chanctx_conf *ctx)
2581 {
2582 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2583 struct iwl_mvm_phy_ctxt *phy_ctxt;
2584 int ret;
2585
2586 lockdep_assert_held(&mvm->mutex);
2587
2588 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2589
2590 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2591 if (!phy_ctxt) {
2592 ret = -ENOSPC;
2593 goto out;
2594 }
2595
2596 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2597 ctx->rx_chains_static,
2598 ctx->rx_chains_dynamic);
2599 if (ret) {
2600 IWL_ERR(mvm, "Failed to add PHY context\n");
2601 goto out;
2602 }
2603
2604 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2605 *phy_ctxt_id = phy_ctxt->id;
2606 out:
2607 return ret;
2608 }
2609
2610 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2611 struct ieee80211_chanctx_conf *ctx)
2612 {
2613 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2614 int ret;
2615
2616 mutex_lock(&mvm->mutex);
2617 ret = __iwl_mvm_add_chanctx(mvm, ctx);
2618 mutex_unlock(&mvm->mutex);
2619
2620 return ret;
2621 }
2622
2623 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2624 struct ieee80211_chanctx_conf *ctx)
2625 {
2626 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2627 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2628
2629 lockdep_assert_held(&mvm->mutex);
2630
2631 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2632 }
2633
2634 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2635 struct ieee80211_chanctx_conf *ctx)
2636 {
2637 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2638
2639 mutex_lock(&mvm->mutex);
2640 __iwl_mvm_remove_chanctx(mvm, ctx);
2641 mutex_unlock(&mvm->mutex);
2642 }
2643
2644 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2645 struct ieee80211_chanctx_conf *ctx,
2646 u32 changed)
2647 {
2648 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2649 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2650 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2651
2652 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2653 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2654 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2655 IEEE80211_CHANCTX_CHANGE_RADAR |
2656 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2657 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2658 phy_ctxt->ref, changed))
2659 return;
2660
2661 mutex_lock(&mvm->mutex);
2662 iwl_mvm_bt_coex_vif_change(mvm);
2663 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2664 ctx->rx_chains_static,
2665 ctx->rx_chains_dynamic);
2666 mutex_unlock(&mvm->mutex);
2667 }
2668
2669 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2670 struct ieee80211_vif *vif,
2671 struct ieee80211_chanctx_conf *ctx,
2672 bool switching_chanctx)
2673 {
2674 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2675 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2676 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2677 int ret;
2678
2679 lockdep_assert_held(&mvm->mutex);
2680
2681 mvmvif->phy_ctxt = phy_ctxt;
2682
2683 switch (vif->type) {
2684 case NL80211_IFTYPE_AP:
2685 /* Unless it's a CSA flow we have nothing to do here */
2686 if (vif->csa_active) {
2687 mvmvif->ap_ibss_active = true;
2688 break;
2689 }
2690 case NL80211_IFTYPE_ADHOC:
2691 /*
2692 * The AP binding flow is handled as part of the start_ap flow
2693 * (in bss_info_changed), similarly for IBSS.
2694 */
2695 ret = 0;
2696 goto out;
2697 case NL80211_IFTYPE_STATION:
2698 case NL80211_IFTYPE_MONITOR:
2699 break;
2700 default:
2701 ret = -EINVAL;
2702 goto out;
2703 }
2704
2705 ret = iwl_mvm_binding_add_vif(mvm, vif);
2706 if (ret)
2707 goto out;
2708
2709 /*
2710 * Power state must be updated before quotas,
2711 * otherwise fw will complain.
2712 */
2713 iwl_mvm_power_update_mac(mvm);
2714
2715 /* Setting the quota at this stage is only required for monitor
2716 * interfaces. For the other types, the bss_info changed flow
2717 * will handle quota settings.
2718 */
2719 if (vif->type == NL80211_IFTYPE_MONITOR) {
2720 mvmvif->monitor_active = true;
2721 ret = iwl_mvm_update_quotas(mvm, NULL);
2722 if (ret)
2723 goto out_remove_binding;
2724 }
2725
2726 /* Handle binding during CSA */
2727 if ((vif->type == NL80211_IFTYPE_AP) ||
2728 (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) {
2729 iwl_mvm_update_quotas(mvm, NULL);
2730 iwl_mvm_mac_ctxt_changed(mvm, vif, false);
2731 }
2732
2733 goto out;
2734
2735 out_remove_binding:
2736 iwl_mvm_binding_remove_vif(mvm, vif);
2737 iwl_mvm_power_update_mac(mvm);
2738 out:
2739 if (ret)
2740 mvmvif->phy_ctxt = NULL;
2741 return ret;
2742 }
2743 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2744 struct ieee80211_vif *vif,
2745 struct ieee80211_chanctx_conf *ctx)
2746 {
2747 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2748 int ret;
2749
2750 mutex_lock(&mvm->mutex);
2751 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
2752 mutex_unlock(&mvm->mutex);
2753
2754 return ret;
2755 }
2756
2757 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2758 struct ieee80211_vif *vif,
2759 struct ieee80211_chanctx_conf *ctx,
2760 bool switching_chanctx)
2761 {
2762 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2763 struct ieee80211_vif *disabled_vif = NULL;
2764
2765 lockdep_assert_held(&mvm->mutex);
2766
2767 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2768
2769 switch (vif->type) {
2770 case NL80211_IFTYPE_ADHOC:
2771 goto out;
2772 case NL80211_IFTYPE_MONITOR:
2773 mvmvif->monitor_active = false;
2774 break;
2775 case NL80211_IFTYPE_AP:
2776 /* This part is triggered only during CSA */
2777 if (!vif->csa_active || !mvmvif->ap_ibss_active)
2778 goto out;
2779
2780 /* Set CS bit on all the stations */
2781 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2782
2783 /* Save blocked iface, the timeout is set on the next beacon */
2784 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2785
2786 mvmvif->ap_ibss_active = false;
2787 break;
2788 case NL80211_IFTYPE_STATION:
2789 if (!switching_chanctx)
2790 break;
2791
2792 disabled_vif = vif;
2793
2794 iwl_mvm_mac_ctxt_changed(mvm, vif, true);
2795 break;
2796 default:
2797 break;
2798 }
2799
2800 iwl_mvm_update_quotas(mvm, disabled_vif);
2801 iwl_mvm_binding_remove_vif(mvm, vif);
2802
2803 out:
2804 mvmvif->phy_ctxt = NULL;
2805 iwl_mvm_power_update_mac(mvm);
2806 }
2807
2808 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2809 struct ieee80211_vif *vif,
2810 struct ieee80211_chanctx_conf *ctx)
2811 {
2812 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2813
2814 mutex_lock(&mvm->mutex);
2815 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
2816 mutex_unlock(&mvm->mutex);
2817 }
2818
2819 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
2820 struct ieee80211_vif_chanctx_switch *vifs,
2821 int n_vifs,
2822 enum ieee80211_chanctx_switch_mode mode)
2823 {
2824 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2825 int ret;
2826
2827 /* we only support SWAP_CONTEXTS and with a single-vif right now */
2828 if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1)
2829 return -EOPNOTSUPP;
2830
2831 mutex_lock(&mvm->mutex);
2832 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
2833 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2834
2835 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2836 if (ret) {
2837 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2838 goto out_reassign;
2839 }
2840
2841 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2842 true);
2843 if (ret) {
2844 IWL_ERR(mvm,
2845 "failed to assign new_ctx during channel switch\n");
2846 goto out_remove;
2847 }
2848
2849 goto out;
2850
2851 out_remove:
2852 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
2853
2854 out_reassign:
2855 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx);
2856 if (ret) {
2857 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
2858 goto out_restart;
2859 }
2860
2861 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
2862 true);
2863 if (ret) {
2864 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
2865 goto out_restart;
2866 }
2867
2868 goto out;
2869
2870 out_restart:
2871 /* things keep failing, better restart the hw */
2872 iwl_mvm_nic_restart(mvm, false);
2873
2874 out:
2875 mutex_unlock(&mvm->mutex);
2876 return ret;
2877 }
2878
2879 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2880 struct ieee80211_sta *sta,
2881 bool set)
2882 {
2883 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2884 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2885
2886 if (!mvm_sta || !mvm_sta->vif) {
2887 IWL_ERR(mvm, "Station is not associated to a vif\n");
2888 return -EINVAL;
2889 }
2890
2891 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2892 }
2893
2894 #ifdef CONFIG_NL80211_TESTMODE
2895 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2896 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2897 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
2898 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
2899 };
2900
2901 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
2902 struct ieee80211_vif *vif,
2903 void *data, int len)
2904 {
2905 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
2906 int err;
2907 u32 noa_duration;
2908
2909 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
2910 if (err)
2911 return err;
2912
2913 if (!tb[IWL_MVM_TM_ATTR_CMD])
2914 return -EINVAL;
2915
2916 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
2917 case IWL_MVM_TM_CMD_SET_NOA:
2918 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
2919 !vif->bss_conf.enable_beacon ||
2920 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
2921 return -EINVAL;
2922
2923 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
2924 if (noa_duration >= vif->bss_conf.beacon_int)
2925 return -EINVAL;
2926
2927 mvm->noa_duration = noa_duration;
2928 mvm->noa_vif = vif;
2929
2930 return iwl_mvm_update_quotas(mvm, NULL);
2931 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
2932 /* must be associated client vif - ignore authorized */
2933 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
2934 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
2935 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
2936 return -EINVAL;
2937
2938 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
2939 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2940 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
2941 }
2942
2943 return -EOPNOTSUPP;
2944 }
2945
2946 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
2947 struct ieee80211_vif *vif,
2948 void *data, int len)
2949 {
2950 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2951 int err;
2952
2953 mutex_lock(&mvm->mutex);
2954 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
2955 mutex_unlock(&mvm->mutex);
2956
2957 return err;
2958 }
2959 #endif
2960
2961 static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
2962 struct ieee80211_vif *vif,
2963 struct cfg80211_chan_def *chandef)
2964 {
2965 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2966 struct ieee80211_vif *csa_vif;
2967
2968 mutex_lock(&mvm->mutex);
2969
2970 csa_vif = rcu_dereference_protected(mvm->csa_vif,
2971 lockdep_is_held(&mvm->mutex));
2972 if (WARN(csa_vif && csa_vif->csa_active,
2973 "Another CSA is already in progress"))
2974 goto out_unlock;
2975
2976 IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
2977 chandef->center_freq1);
2978 rcu_assign_pointer(mvm->csa_vif, vif);
2979
2980 out_unlock:
2981 mutex_unlock(&mvm->mutex);
2982 }
2983
2984 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
2985 struct ieee80211_vif *vif, u32 queues, bool drop)
2986 {
2987 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2988 struct iwl_mvm_vif *mvmvif;
2989 struct iwl_mvm_sta *mvmsta;
2990
2991 if (!vif || vif->type != NL80211_IFTYPE_STATION)
2992 return;
2993
2994 mutex_lock(&mvm->mutex);
2995 mvmvif = iwl_mvm_vif_from_mac80211(vif);
2996 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
2997
2998 if (WARN_ON_ONCE(!mvmsta))
2999 goto done;
3000
3001 if (drop) {
3002 if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
3003 IWL_ERR(mvm, "flush request fail\n");
3004 } else {
3005 iwl_trans_wait_tx_queue_empty(mvm->trans,
3006 mvmsta->tfd_queue_msk);
3007 }
3008 done:
3009 mutex_unlock(&mvm->mutex);
3010 }
3011
3012 const struct ieee80211_ops iwl_mvm_hw_ops = {
3013 .tx = iwl_mvm_mac_tx,
3014 .ampdu_action = iwl_mvm_mac_ampdu_action,
3015 .start = iwl_mvm_mac_start,
3016 .restart_complete = iwl_mvm_mac_restart_complete,
3017 .stop = iwl_mvm_mac_stop,
3018 .add_interface = iwl_mvm_mac_add_interface,
3019 .remove_interface = iwl_mvm_mac_remove_interface,
3020 .config = iwl_mvm_mac_config,
3021 .prepare_multicast = iwl_mvm_prepare_multicast,
3022 .configure_filter = iwl_mvm_configure_filter,
3023 .bss_info_changed = iwl_mvm_bss_info_changed,
3024 .hw_scan = iwl_mvm_mac_hw_scan,
3025 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3026 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3027 .sta_state = iwl_mvm_mac_sta_state,
3028 .sta_notify = iwl_mvm_mac_sta_notify,
3029 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3030 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3031 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3032 .sta_rc_update = iwl_mvm_sta_rc_update,
3033 .conf_tx = iwl_mvm_mac_conf_tx,
3034 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3035 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3036 .flush = iwl_mvm_mac_flush,
3037 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3038 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3039 .set_key = iwl_mvm_mac_set_key,
3040 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3041 .remain_on_channel = iwl_mvm_roc,
3042 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3043 .add_chanctx = iwl_mvm_add_chanctx,
3044 .remove_chanctx = iwl_mvm_remove_chanctx,
3045 .change_chanctx = iwl_mvm_change_chanctx,
3046 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3047 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3048 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3049
3050 .start_ap = iwl_mvm_start_ap_ibss,
3051 .stop_ap = iwl_mvm_stop_ap_ibss,
3052 .join_ibss = iwl_mvm_start_ap_ibss,
3053 .leave_ibss = iwl_mvm_stop_ap_ibss,
3054
3055 .set_tim = iwl_mvm_set_tim,
3056
3057 .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
3058
3059 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3060
3061 #ifdef CONFIG_PM_SLEEP
3062 /* look at d3.c */
3063 .suspend = iwl_mvm_suspend,
3064 .resume = iwl_mvm_resume,
3065 .set_wakeup = iwl_mvm_set_wakeup,
3066 .set_rekey_data = iwl_mvm_set_rekey_data,
3067 #if IS_ENABLED(CONFIG_IPV6)
3068 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3069 #endif
3070 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3071 #endif
3072 };
Linux kernel - Deliverables
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