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