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iwlwifi: mvm: always update the quota after association
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
27 *
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65 #include <linux/kernel.h>
66 #include <linux/slab.h>
67 #include <linux/skbuff.h>
68 #include <linux/netdevice.h>
69 #include <linux/etherdevice.h>
70 #include <linux/ip.h>
71 #include <linux/if_arp.h>
72 #include <linux/devcoredump.h>
73 #include <net/mac80211.h>
74 #include <net/ieee80211_radiotap.h>
75 #include <net/tcp.h>
76
77 #include "iwl-op-mode.h"
78 #include "iwl-io.h"
79 #include "mvm.h"
80 #include "sta.h"
81 #include "time-event.h"
82 #include "iwl-eeprom-parse.h"
83 #include "fw-api-scan.h"
84 #include "iwl-phy-db.h"
85 #include "testmode.h"
86 #include "iwl-fw-error-dump.h"
87 #include "iwl-prph.h"
88 #include "iwl-csr.h"
89 #include "iwl-nvm-parse.h"
90
91 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
92 {
93 .max = 1,
94 .types = BIT(NL80211_IFTYPE_STATION),
95 },
96 {
97 .max = 1,
98 .types = BIT(NL80211_IFTYPE_AP) |
99 BIT(NL80211_IFTYPE_P2P_CLIENT) |
100 BIT(NL80211_IFTYPE_P2P_GO),
101 },
102 {
103 .max = 1,
104 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
105 },
106 };
107
108 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
109 {
110 .num_different_channels = 2,
111 .max_interfaces = 3,
112 .limits = iwl_mvm_limits,
113 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
114 },
115 };
116
117 #ifdef CONFIG_PM_SLEEP
118 static const struct nl80211_wowlan_tcp_data_token_feature
119 iwl_mvm_wowlan_tcp_token_feature = {
120 .min_len = 0,
121 .max_len = 255,
122 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
123 };
124
125 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
126 .tok = &iwl_mvm_wowlan_tcp_token_feature,
127 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
128 sizeof(struct ethhdr) -
129 sizeof(struct iphdr) -
130 sizeof(struct tcphdr),
131 .data_interval_max = 65535, /* __le16 in API */
132 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
133 sizeof(struct ethhdr) -
134 sizeof(struct iphdr) -
135 sizeof(struct tcphdr),
136 .seq = true,
137 };
138 #endif
139
140 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
141 /*
142 * Use the reserved field to indicate magic values.
143 * these values will only be used internally by the driver,
144 * and won't make it to the fw (reserved will be 0).
145 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
146 * be the vif's ip address. in case there is not a single
147 * ip address (0, or more than 1), this attribute will
148 * be skipped.
149 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
150 * the LSB bytes of the vif's mac address
151 */
152 enum {
153 BC_FILTER_MAGIC_NONE = 0,
154 BC_FILTER_MAGIC_IP,
155 BC_FILTER_MAGIC_MAC,
156 };
157
158 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
159 {
160 /* arp */
161 .discard = 0,
162 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
163 .attrs = {
164 {
165 /* frame type - arp, hw type - ethernet */
166 .offset_type =
167 BCAST_FILTER_OFFSET_PAYLOAD_START,
168 .offset = sizeof(rfc1042_header),
169 .val = cpu_to_be32(0x08060001),
170 .mask = cpu_to_be32(0xffffffff),
171 },
172 {
173 /* arp dest ip */
174 .offset_type =
175 BCAST_FILTER_OFFSET_PAYLOAD_START,
176 .offset = sizeof(rfc1042_header) + 2 +
177 sizeof(struct arphdr) +
178 ETH_ALEN + sizeof(__be32) +
179 ETH_ALEN,
180 .mask = cpu_to_be32(0xffffffff),
181 /* mark it as special field */
182 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
183 },
184 },
185 },
186 {
187 /* dhcp offer bcast */
188 .discard = 0,
189 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
190 .attrs = {
191 {
192 /* udp dest port - 68 (bootp client)*/
193 .offset_type = BCAST_FILTER_OFFSET_IP_END,
194 .offset = offsetof(struct udphdr, dest),
195 .val = cpu_to_be32(0x00440000),
196 .mask = cpu_to_be32(0xffff0000),
197 },
198 {
199 /* dhcp - lsb bytes of client hw address */
200 .offset_type = BCAST_FILTER_OFFSET_IP_END,
201 .offset = 38,
202 .mask = cpu_to_be32(0xffffffff),
203 /* mark it as special field */
204 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
205 },
206 },
207 },
208 /* last filter must be empty */
209 {},
210 };
211 #endif
212
213 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
214 {
215 if (!iwl_mvm_is_d0i3_supported(mvm))
216 return;
217
218 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
219 spin_lock_bh(&mvm->refs_lock);
220 mvm->refs[ref_type]++;
221 spin_unlock_bh(&mvm->refs_lock);
222 iwl_trans_ref(mvm->trans);
223 }
224
225 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
226 {
227 if (!iwl_mvm_is_d0i3_supported(mvm))
228 return;
229
230 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
231 spin_lock_bh(&mvm->refs_lock);
232 WARN_ON(!mvm->refs[ref_type]--);
233 spin_unlock_bh(&mvm->refs_lock);
234 iwl_trans_unref(mvm->trans);
235 }
236
237 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
238 enum iwl_mvm_ref_type except_ref)
239 {
240 int i, j;
241
242 if (!iwl_mvm_is_d0i3_supported(mvm))
243 return;
244
245 spin_lock_bh(&mvm->refs_lock);
246 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
247 if (except_ref == i || !mvm->refs[i])
248 continue;
249
250 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
251 i, mvm->refs[i]);
252 for (j = 0; j < mvm->refs[i]; j++)
253 iwl_trans_unref(mvm->trans);
254 mvm->refs[i] = 0;
255 }
256 spin_unlock_bh(&mvm->refs_lock);
257 }
258
259 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
260 {
261 int i;
262 bool taken = false;
263
264 if (!iwl_mvm_is_d0i3_supported(mvm))
265 return true;
266
267 spin_lock_bh(&mvm->refs_lock);
268 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
269 if (mvm->refs[i]) {
270 taken = true;
271 break;
272 }
273 }
274 spin_unlock_bh(&mvm->refs_lock);
275
276 return taken;
277 }
278
279 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
280 {
281 iwl_mvm_ref(mvm, ref_type);
282
283 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
284 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
285 HZ)) {
286 WARN_ON_ONCE(1);
287 iwl_mvm_unref(mvm, ref_type);
288 return -EIO;
289 }
290
291 return 0;
292 }
293
294 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
295 {
296 int i;
297
298 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
299 for (i = 0; i < NUM_PHY_CTX; i++) {
300 mvm->phy_ctxts[i].id = i;
301 mvm->phy_ctxts[i].ref = 0;
302 }
303 }
304
305 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
306 const char *alpha2,
307 enum iwl_mcc_source src_id,
308 bool *changed)
309 {
310 struct ieee80211_regdomain *regd = NULL;
311 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
312 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
313 struct iwl_mcc_update_resp *resp;
314
315 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
316
317 lockdep_assert_held(&mvm->mutex);
318
319 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
320 if (IS_ERR_OR_NULL(resp)) {
321 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
322 PTR_RET(resp));
323 goto out;
324 }
325
326 if (changed)
327 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
328
329 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
330 __le32_to_cpu(resp->n_channels),
331 resp->channels,
332 __le16_to_cpu(resp->mcc));
333 /* Store the return source id */
334 src_id = resp->source_id;
335 kfree(resp);
336 if (IS_ERR_OR_NULL(regd)) {
337 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
338 PTR_RET(regd));
339 goto out;
340 }
341
342 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
343 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
344 mvm->lar_regdom_set = true;
345 mvm->mcc_src = src_id;
346
347 out:
348 return regd;
349 }
350
351 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
352 {
353 bool changed;
354 struct ieee80211_regdomain *regd;
355
356 if (!iwl_mvm_is_lar_supported(mvm))
357 return;
358
359 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
360 if (!IS_ERR_OR_NULL(regd)) {
361 /* only update the regulatory core if changed */
362 if (changed)
363 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
364
365 kfree(regd);
366 }
367 }
368
369 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
370 bool *changed)
371 {
372 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
373 iwl_mvm_is_wifi_mcc_supported(mvm) ?
374 MCC_SOURCE_GET_CURRENT :
375 MCC_SOURCE_OLD_FW, changed);
376 }
377
378 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
379 {
380 enum iwl_mcc_source used_src;
381 struct ieee80211_regdomain *regd;
382 const struct ieee80211_regdomain *r =
383 rtnl_dereference(mvm->hw->wiphy->regd);
384
385 if (!r)
386 return 0;
387
388 /* save the last source in case we overwrite it below */
389 used_src = mvm->mcc_src;
390 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
391 /* Notify the firmware we support wifi location updates */
392 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
393 if (!IS_ERR_OR_NULL(regd))
394 kfree(regd);
395 }
396
397 /* Now set our last stored MCC and source */
398 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, NULL);
399 if (IS_ERR_OR_NULL(regd))
400 return -EIO;
401
402 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
403 kfree(regd);
404
405 return 0;
406 }
407
408 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
409 {
410 struct ieee80211_hw *hw = mvm->hw;
411 int num_mac, ret, i;
412
413 /* Tell mac80211 our characteristics */
414 hw->flags = IEEE80211_HW_SIGNAL_DBM |
415 IEEE80211_HW_SPECTRUM_MGMT |
416 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
417 IEEE80211_HW_QUEUE_CONTROL |
418 IEEE80211_HW_WANT_MONITOR_VIF |
419 IEEE80211_HW_SUPPORTS_PS |
420 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
421 IEEE80211_HW_AMPDU_AGGREGATION |
422 IEEE80211_HW_TIMING_BEACON_ONLY |
423 IEEE80211_HW_CONNECTION_MONITOR |
424 IEEE80211_HW_CHANCTX_STA_CSA |
425 IEEE80211_HW_SUPPORTS_CLONED_SKBS;
426
427 hw->queues = mvm->first_agg_queue;
428 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
429 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
430 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
431 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
432 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
433 hw->rate_control_algorithm = "iwl-mvm-rs";
434 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
435 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
436
437 /*
438 * Enable 11w if advertised by firmware and software crypto
439 * is not enabled (as the firmware will interpret some mgmt
440 * packets, so enabling it with software crypto isn't safe)
441 */
442 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
443 !iwlwifi_mod_params.sw_crypto)
444 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
445
446 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
447 hw->wiphy->features |=
448 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
449 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
450
451 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
452 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
453 hw->chanctx_data_size = sizeof(u16);
454
455 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
456 BIT(NL80211_IFTYPE_P2P_CLIENT) |
457 BIT(NL80211_IFTYPE_AP) |
458 BIT(NL80211_IFTYPE_P2P_GO) |
459 BIT(NL80211_IFTYPE_P2P_DEVICE) |
460 BIT(NL80211_IFTYPE_ADHOC);
461
462 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
463 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
464 if (iwl_mvm_is_lar_supported(mvm))
465 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
466 else
467 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
468 REGULATORY_DISABLE_BEACON_HINTS;
469
470 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
471 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
472
473 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
474
475 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
476 hw->wiphy->n_iface_combinations =
477 ARRAY_SIZE(iwl_mvm_iface_combinations);
478
479 hw->wiphy->max_remain_on_channel_duration = 10000;
480 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
481 /* we can compensate an offset of up to 3 channels = 15 MHz */
482 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
483
484 /* Extract MAC address */
485 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
486 hw->wiphy->addresses = mvm->addresses;
487 hw->wiphy->n_addresses = 1;
488
489 /* Extract additional MAC addresses if available */
490 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
491 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
492
493 for (i = 1; i < num_mac; i++) {
494 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
495 ETH_ALEN);
496 mvm->addresses[i].addr[5]++;
497 hw->wiphy->n_addresses++;
498 }
499
500 iwl_mvm_reset_phy_ctxts(mvm);
501
502 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
503
504 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
505
506 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
507 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
508 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
509 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
510 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
511 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
512
513 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_BEAMFORMER)
514 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
515 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
516 }
517
518 hw->wiphy->hw_version = mvm->trans->hw_id;
519
520 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
521 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
522 else
523 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
524
525 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
526 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
527 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
528 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
529 /* we create the 802.11 header and zero length SSID IE. */
530 hw->wiphy->max_sched_scan_ie_len =
531 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
532 }
533
534 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
535 NL80211_FEATURE_LOW_PRIORITY_SCAN |
536 NL80211_FEATURE_P2P_GO_OPPPS |
537 NL80211_FEATURE_DYNAMIC_SMPS |
538 NL80211_FEATURE_STATIC_SMPS |
539 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
540
541 if (mvm->fw->ucode_capa.capa[0] &
542 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
543 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
544 if (mvm->fw->ucode_capa.capa[0] &
545 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
546 hw->wiphy->features |= NL80211_FEATURE_QUIET;
547
548 if (mvm->fw->ucode_capa.capa[0] &
549 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
550 hw->wiphy->features |=
551 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
552
553 if (mvm->fw->ucode_capa.capa[0] &
554 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
555 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
556
557 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
558
559 /* currently FW API supports only one optional cipher scheme */
560 if (mvm->fw->cs[0].cipher) {
561 mvm->hw->n_cipher_schemes = 1;
562 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
563 }
564
565 #ifdef CONFIG_PM_SLEEP
566 if (iwl_mvm_is_d0i3_supported(mvm) &&
567 device_can_wakeup(mvm->trans->dev)) {
568 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
569 hw->wiphy->wowlan = &mvm->wowlan;
570 }
571
572 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
573 mvm->trans->ops->d3_suspend &&
574 mvm->trans->ops->d3_resume &&
575 device_can_wakeup(mvm->trans->dev)) {
576 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
577 WIPHY_WOWLAN_DISCONNECT |
578 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
579 WIPHY_WOWLAN_RFKILL_RELEASE |
580 WIPHY_WOWLAN_NET_DETECT;
581 if (!iwlwifi_mod_params.sw_crypto)
582 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
583 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
584 WIPHY_WOWLAN_4WAY_HANDSHAKE;
585
586 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
587 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
588 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
589 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
590 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
591 hw->wiphy->wowlan = &mvm->wowlan;
592 }
593 #endif
594
595 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
596 /* assign default bcast filtering configuration */
597 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
598 #endif
599
600 ret = iwl_mvm_leds_init(mvm);
601 if (ret)
602 return ret;
603
604 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
605 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
606 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
607 }
608
609 if (mvm->fw->ucode_capa.capa[0] &
610 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
611 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
612 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
613 }
614
615 ret = ieee80211_register_hw(mvm->hw);
616 if (ret)
617 iwl_mvm_leds_exit(mvm);
618
619 return ret;
620 }
621
622 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
623 struct ieee80211_sta *sta,
624 struct sk_buff *skb)
625 {
626 struct iwl_mvm_sta *mvmsta;
627 bool defer = false;
628
629 /*
630 * double check the IN_D0I3 flag both before and after
631 * taking the spinlock, in order to prevent taking
632 * the spinlock when not needed.
633 */
634 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
635 return false;
636
637 spin_lock(&mvm->d0i3_tx_lock);
638 /*
639 * testing the flag again ensures the skb dequeue
640 * loop (on d0i3 exit) hasn't run yet.
641 */
642 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
643 goto out;
644
645 mvmsta = iwl_mvm_sta_from_mac80211(sta);
646 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
647 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
648 goto out;
649
650 __skb_queue_tail(&mvm->d0i3_tx, skb);
651 ieee80211_stop_queues(mvm->hw);
652
653 /* trigger wakeup */
654 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
655 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
656
657 defer = true;
658 out:
659 spin_unlock(&mvm->d0i3_tx_lock);
660 return defer;
661 }
662
663 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
664 struct ieee80211_tx_control *control,
665 struct sk_buff *skb)
666 {
667 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
668 struct ieee80211_sta *sta = control->sta;
669 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
670 struct ieee80211_hdr *hdr = (void *)skb->data;
671
672 if (iwl_mvm_is_radio_killed(mvm)) {
673 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
674 goto drop;
675 }
676
677 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
678 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
679 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
680 goto drop;
681
682 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
683 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
684 ieee80211_is_mgmt(hdr->frame_control) &&
685 !ieee80211_is_deauth(hdr->frame_control) &&
686 !ieee80211_is_disassoc(hdr->frame_control) &&
687 !ieee80211_is_action(hdr->frame_control)))
688 sta = NULL;
689
690 if (sta) {
691 if (iwl_mvm_defer_tx(mvm, sta, skb))
692 return;
693 if (iwl_mvm_tx_skb(mvm, skb, sta))
694 goto drop;
695 return;
696 }
697
698 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
699 goto drop;
700 return;
701 drop:
702 ieee80211_free_txskb(hw, skb);
703 }
704
705 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
706 {
707 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
708 return false;
709 return true;
710 }
711
712 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
713 {
714 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
715 return false;
716 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
717 return true;
718
719 /* enabled by default */
720 return true;
721 }
722
723 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
724 struct ieee80211_vif *vif,
725 enum ieee80211_ampdu_mlme_action action,
726 struct ieee80211_sta *sta, u16 tid,
727 u16 *ssn, u8 buf_size)
728 {
729 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
730 int ret;
731 bool tx_agg_ref = false;
732
733 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
734 sta->addr, tid, action);
735
736 if (!(mvm->nvm_data->sku_cap_11n_enable))
737 return -EACCES;
738
739 /* return from D0i3 before starting a new Tx aggregation */
740 switch (action) {
741 case IEEE80211_AMPDU_TX_START:
742 case IEEE80211_AMPDU_TX_STOP_CONT:
743 case IEEE80211_AMPDU_TX_STOP_FLUSH:
744 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
745 case IEEE80211_AMPDU_TX_OPERATIONAL:
746 /*
747 * for tx start, wait synchronously until D0i3 exit to
748 * get the correct sequence number for the tid.
749 * additionally, some other ampdu actions use direct
750 * target access, which is not handled automatically
751 * by the trans layer (unlike commands), so wait for
752 * d0i3 exit in these cases as well.
753 */
754 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
755 if (ret)
756 return ret;
757
758 tx_agg_ref = true;
759 break;
760 default:
761 break;
762 }
763
764 mutex_lock(&mvm->mutex);
765
766 switch (action) {
767 case IEEE80211_AMPDU_RX_START:
768 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
769 ret = -EINVAL;
770 break;
771 }
772 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
773 break;
774 case IEEE80211_AMPDU_RX_STOP:
775 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
776 break;
777 case IEEE80211_AMPDU_TX_START:
778 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
779 ret = -EINVAL;
780 break;
781 }
782 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
783 break;
784 case IEEE80211_AMPDU_TX_STOP_CONT:
785 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
786 break;
787 case IEEE80211_AMPDU_TX_STOP_FLUSH:
788 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
789 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
790 break;
791 case IEEE80211_AMPDU_TX_OPERATIONAL:
792 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
793 break;
794 default:
795 WARN_ON_ONCE(1);
796 ret = -EINVAL;
797 break;
798 }
799 mutex_unlock(&mvm->mutex);
800
801 /*
802 * If the tid is marked as started, we won't use it for offloaded
803 * traffic on the next D0i3 entry. It's safe to unref.
804 */
805 if (tx_agg_ref)
806 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
807
808 return ret;
809 }
810
811 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
812 struct ieee80211_vif *vif)
813 {
814 struct iwl_mvm *mvm = data;
815 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
816
817 mvmvif->uploaded = false;
818 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
819
820 spin_lock_bh(&mvm->time_event_lock);
821 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
822 spin_unlock_bh(&mvm->time_event_lock);
823
824 mvmvif->phy_ctxt = NULL;
825 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
826 }
827
828 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
829 const void *data, size_t datalen)
830 {
831 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
832 ssize_t bytes_read;
833 ssize_t bytes_read_trans;
834
835 if (offset < dump_ptrs->op_mode_len) {
836 bytes_read = min_t(ssize_t, count,
837 dump_ptrs->op_mode_len - offset);
838 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
839 bytes_read);
840 offset += bytes_read;
841 count -= bytes_read;
842
843 if (count == 0)
844 return bytes_read;
845 } else {
846 bytes_read = 0;
847 }
848
849 if (!dump_ptrs->trans_ptr)
850 return bytes_read;
851
852 offset -= dump_ptrs->op_mode_len;
853 bytes_read_trans = min_t(ssize_t, count,
854 dump_ptrs->trans_ptr->len - offset);
855 memcpy(buffer + bytes_read,
856 (u8 *)dump_ptrs->trans_ptr->data + offset,
857 bytes_read_trans);
858
859 return bytes_read + bytes_read_trans;
860 }
861
862 static void iwl_mvm_free_coredump(const void *data)
863 {
864 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
865
866 vfree(fw_error_dump->op_mode_ptr);
867 vfree(fw_error_dump->trans_ptr);
868 kfree(fw_error_dump);
869 }
870
871 static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
872 struct iwl_fw_error_dump_data **dump_data)
873 {
874 struct iwl_fw_error_dump_fifo *fifo_hdr;
875 u32 *fifo_data;
876 u32 fifo_len;
877 unsigned long flags;
878 int i, j;
879
880 if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
881 return;
882
883 /* Pull RXF data from all RXFs */
884 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
885 /*
886 * Keep aside the additional offset that might be needed for
887 * next RXF
888 */
889 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
890
891 fifo_hdr = (void *)(*dump_data)->data;
892 fifo_data = (void *)fifo_hdr->data;
893 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
894
895 /* No need to try to read the data if the length is 0 */
896 if (fifo_len == 0)
897 continue;
898
899 /* Add a TLV for the RXF */
900 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
901 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
902
903 fifo_hdr->fifo_num = cpu_to_le32(i);
904 fifo_hdr->available_bytes =
905 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
906 RXF_RD_D_SPACE +
907 offset_diff));
908 fifo_hdr->wr_ptr =
909 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
910 RXF_RD_WR_PTR +
911 offset_diff));
912 fifo_hdr->rd_ptr =
913 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
914 RXF_RD_RD_PTR +
915 offset_diff));
916 fifo_hdr->fence_ptr =
917 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
918 RXF_RD_FENCE_PTR +
919 offset_diff));
920 fifo_hdr->fence_mode =
921 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
922 RXF_SET_FENCE_MODE +
923 offset_diff));
924
925 /* Lock fence */
926 iwl_trans_write_prph(mvm->trans,
927 RXF_SET_FENCE_MODE + offset_diff, 0x1);
928 /* Set fence pointer to the same place like WR pointer */
929 iwl_trans_write_prph(mvm->trans,
930 RXF_LD_WR2FENCE + offset_diff, 0x1);
931 /* Set fence offset */
932 iwl_trans_write_prph(mvm->trans,
933 RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
934 0x0);
935
936 /* Read FIFO */
937 fifo_len /= sizeof(u32); /* Size in DWORDS */
938 for (j = 0; j < fifo_len; j++)
939 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
940 RXF_FIFO_RD_FENCE_INC +
941 offset_diff);
942 *dump_data = iwl_fw_error_next_data(*dump_data);
943 }
944
945 /* Pull TXF data from all TXFs */
946 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
947 /* Mark the number of TXF we're pulling now */
948 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
949
950 fifo_hdr = (void *)(*dump_data)->data;
951 fifo_data = (void *)fifo_hdr->data;
952 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
953
954 /* No need to try to read the data if the length is 0 */
955 if (fifo_len == 0)
956 continue;
957
958 /* Add a TLV for the FIFO */
959 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
960 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
961
962 fifo_hdr->fifo_num = cpu_to_le32(i);
963 fifo_hdr->available_bytes =
964 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
965 TXF_FIFO_ITEM_CNT));
966 fifo_hdr->wr_ptr =
967 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
968 TXF_WR_PTR));
969 fifo_hdr->rd_ptr =
970 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
971 TXF_RD_PTR));
972 fifo_hdr->fence_ptr =
973 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
974 TXF_FENCE_PTR));
975 fifo_hdr->fence_mode =
976 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
977 TXF_LOCK_FENCE));
978
979 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
980 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
981 TXF_WR_PTR);
982
983 /* Dummy-read to advance the read pointer to the head */
984 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
985
986 /* Read FIFO */
987 fifo_len /= sizeof(u32); /* Size in DWORDS */
988 for (j = 0; j < fifo_len; j++)
989 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
990 TXF_READ_MODIFY_DATA);
991 *dump_data = iwl_fw_error_next_data(*dump_data);
992 }
993
994 iwl_trans_release_nic_access(mvm->trans, &flags);
995 }
996
997 void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
998 {
999 if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert ||
1000 !mvm->fw_dump_desc)
1001 return;
1002
1003 kfree(mvm->fw_dump_desc);
1004 mvm->fw_dump_desc = NULL;
1005 }
1006
1007 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
1008 {
1009 struct iwl_fw_error_dump_file *dump_file;
1010 struct iwl_fw_error_dump_data *dump_data;
1011 struct iwl_fw_error_dump_info *dump_info;
1012 struct iwl_fw_error_dump_mem *dump_mem;
1013 struct iwl_fw_error_dump_trigger_desc *dump_trig;
1014 struct iwl_mvm_dump_ptrs *fw_error_dump;
1015 u32 sram_len, sram_ofs;
1016 u32 file_len, fifo_data_len = 0;
1017 u32 smem_len = mvm->cfg->smem_len;
1018 u32 sram2_len = mvm->cfg->dccm2_len;
1019
1020 lockdep_assert_held(&mvm->mutex);
1021
1022 /* W/A for 8000 HW family A-step */
1023 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1024 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_A_STEP) {
1025 if (smem_len)
1026 smem_len = 0x38000;
1027
1028 if (sram2_len)
1029 sram2_len = 0x10000;
1030 }
1031
1032 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
1033 if (!fw_error_dump)
1034 return;
1035
1036 /* SRAM - include stack CCM if driver knows the values for it */
1037 if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
1038 const struct fw_img *img;
1039
1040 img = &mvm->fw->img[mvm->cur_ucode];
1041 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1042 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
1043 } else {
1044 sram_ofs = mvm->cfg->dccm_offset;
1045 sram_len = mvm->cfg->dccm_len;
1046 }
1047
1048 /* reading RXF/TXF sizes */
1049 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
1050 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
1051 int i;
1052
1053 fifo_data_len = 0;
1054
1055 /* Count RXF size */
1056 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
1057 if (!mem_cfg->rxfifo_size[i])
1058 continue;
1059
1060 /* Add header info */
1061 fifo_data_len += mem_cfg->rxfifo_size[i] +
1062 sizeof(*dump_data) +
1063 sizeof(struct iwl_fw_error_dump_fifo);
1064 }
1065
1066 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
1067 if (!mem_cfg->txfifo_size[i])
1068 continue;
1069
1070 /* Add header info */
1071 fifo_data_len += mem_cfg->txfifo_size[i] +
1072 sizeof(*dump_data) +
1073 sizeof(struct iwl_fw_error_dump_fifo);
1074 }
1075 }
1076
1077 file_len = sizeof(*dump_file) +
1078 sizeof(*dump_data) * 2 +
1079 sram_len + sizeof(*dump_mem) +
1080 fifo_data_len +
1081 sizeof(*dump_info);
1082
1083 if (mvm->fw_dump_desc)
1084 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
1085 mvm->fw_dump_desc->len;
1086
1087 /* Make room for the SMEM, if it exists */
1088 if (smem_len)
1089 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
1090
1091 /* Make room for the secondary SRAM, if it exists */
1092 if (sram2_len)
1093 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
1094
1095 dump_file = vzalloc(file_len);
1096 if (!dump_file) {
1097 kfree(fw_error_dump);
1098 iwl_mvm_free_fw_dump_desc(mvm);
1099 return;
1100 }
1101
1102 fw_error_dump->op_mode_ptr = dump_file;
1103
1104 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
1105 dump_data = (void *)dump_file->data;
1106
1107 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
1108 dump_data->len = cpu_to_le32(sizeof(*dump_info));
1109 dump_info = (void *) dump_data->data;
1110 dump_info->device_family =
1111 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
1112 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
1113 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
1114 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
1115 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
1116 sizeof(dump_info->fw_human_readable));
1117 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1118 sizeof(dump_info->dev_human_readable));
1119 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1120 sizeof(dump_info->bus_human_readable));
1121
1122 dump_data = iwl_fw_error_next_data(dump_data);
1123 /* We only dump the FIFOs if the FW is in error state */
1124 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1125 iwl_mvm_dump_fifos(mvm, &dump_data);
1126
1127 if (mvm->fw_dump_desc) {
1128 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
1129 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
1130 mvm->fw_dump_desc->len);
1131 dump_trig = (void *)dump_data->data;
1132 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
1133 sizeof(*dump_trig) + mvm->fw_dump_desc->len);
1134
1135 /* now we can free this copy */
1136 iwl_mvm_free_fw_dump_desc(mvm);
1137 dump_data = iwl_fw_error_next_data(dump_data);
1138 }
1139
1140 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1141 dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1142 dump_mem = (void *)dump_data->data;
1143 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1144 dump_mem->offset = cpu_to_le32(sram_ofs);
1145 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
1146 sram_len);
1147
1148 if (smem_len) {
1149 dump_data = iwl_fw_error_next_data(dump_data);
1150 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1151 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1152 dump_mem = (void *)dump_data->data;
1153 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1154 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
1155 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
1156 dump_mem->data, smem_len);
1157 }
1158
1159 if (sram2_len) {
1160 dump_data = iwl_fw_error_next_data(dump_data);
1161 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1162 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1163 dump_mem = (void *)dump_data->data;
1164 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1165 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1166 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1167 dump_mem->data, sram2_len);
1168 }
1169
1170 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
1171 fw_error_dump->op_mode_len = file_len;
1172 if (fw_error_dump->trans_ptr)
1173 file_len += fw_error_dump->trans_ptr->len;
1174 dump_file->file_len = cpu_to_le32(file_len);
1175
1176 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1177 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
1178
1179 clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
1180 }
1181
1182 struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
1183 .trig_desc = {
1184 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
1185 },
1186 };
1187
1188 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1189 {
1190 /* clear the D3 reconfig, we only need it to avoid dumping a
1191 * firmware coredump on reconfiguration, we shouldn't do that
1192 * on D3->D0 transition
1193 */
1194 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1195 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1196 iwl_mvm_fw_error_dump(mvm);
1197 }
1198
1199 /* cleanup all stale references (scan, roc), but keep the
1200 * ucode_down ref until reconfig is complete
1201 */
1202 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1203
1204 iwl_trans_stop_device(mvm->trans);
1205
1206 mvm->scan_status = IWL_MVM_SCAN_NONE;
1207 mvm->ps_disabled = false;
1208 mvm->calibrating = false;
1209
1210 /* just in case one was running */
1211 ieee80211_remain_on_channel_expired(mvm->hw);
1212
1213 ieee80211_iterate_active_interfaces_atomic(
1214 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1215 iwl_mvm_cleanup_iterator, mvm);
1216
1217 mvm->p2p_device_vif = NULL;
1218 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1219
1220 iwl_mvm_reset_phy_ctxts(mvm);
1221 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1222 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1223 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1224 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1225 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1226 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1227 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1228 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1229 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1230
1231 ieee80211_wake_queues(mvm->hw);
1232
1233 /* clear any stale d0i3 state */
1234 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1235
1236 mvm->vif_count = 0;
1237 mvm->rx_ba_sessions = 0;
1238 mvm->fw_dbg_conf = FW_DBG_INVALID;
1239
1240 /* keep statistics ticking */
1241 iwl_mvm_accu_radio_stats(mvm);
1242 }
1243
1244 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1245 {
1246 int ret;
1247
1248 lockdep_assert_held(&mvm->mutex);
1249
1250 /* Clean up some internal and mac80211 state on restart */
1251 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1252 iwl_mvm_restart_cleanup(mvm);
1253
1254 ret = iwl_mvm_up(mvm);
1255
1256 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1257 /* Something went wrong - we need to finish some cleanup
1258 * that normally iwl_mvm_mac_restart_complete() below
1259 * would do.
1260 */
1261 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1262 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1263 }
1264
1265 return ret;
1266 }
1267
1268 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1269 {
1270 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1271 int ret;
1272
1273 /* Some hw restart cleanups must not hold the mutex */
1274 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1275 /*
1276 * Make sure we are out of d0i3. This is needed
1277 * to make sure the reference accounting is correct
1278 * (and there is no stale d0i3_exit_work).
1279 */
1280 wait_event_timeout(mvm->d0i3_exit_waitq,
1281 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1282 &mvm->status),
1283 HZ);
1284 }
1285
1286 mutex_lock(&mvm->mutex);
1287 ret = __iwl_mvm_mac_start(mvm);
1288 mutex_unlock(&mvm->mutex);
1289
1290 return ret;
1291 }
1292
1293 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1294 {
1295 int ret;
1296
1297 mutex_lock(&mvm->mutex);
1298
1299 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1300 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1301 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1302 if (ret)
1303 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1304 ret);
1305
1306 /* allow transport/FW low power modes */
1307 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1308
1309 /*
1310 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1311 * of packets the FW sent out, so we must reconnect.
1312 */
1313 iwl_mvm_teardown_tdls_peers(mvm);
1314
1315 mutex_unlock(&mvm->mutex);
1316 }
1317
1318 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1319 {
1320 bool exit_now;
1321
1322 if (!iwl_mvm_is_d0i3_supported(mvm))
1323 return;
1324
1325 mutex_lock(&mvm->d0i3_suspend_mutex);
1326 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1327 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1328 &mvm->d0i3_suspend_flags);
1329 mutex_unlock(&mvm->d0i3_suspend_mutex);
1330
1331 if (exit_now) {
1332 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1333 _iwl_mvm_exit_d0i3(mvm);
1334 }
1335
1336 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1337 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1338 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1339 &mvm->status),
1340 HZ))
1341 WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1342 }
1343
1344 static void
1345 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1346 enum ieee80211_reconfig_type reconfig_type)
1347 {
1348 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1349
1350 switch (reconfig_type) {
1351 case IEEE80211_RECONFIG_TYPE_RESTART:
1352 iwl_mvm_restart_complete(mvm);
1353 break;
1354 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1355 iwl_mvm_resume_complete(mvm);
1356 break;
1357 }
1358 }
1359
1360 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1361 {
1362 lockdep_assert_held(&mvm->mutex);
1363
1364 /* firmware counters are obviously reset now, but we shouldn't
1365 * partially track so also clear the fw_reset_accu counters.
1366 */
1367 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1368
1369 /*
1370 * Disallow low power states when the FW is down by taking
1371 * the UCODE_DOWN ref. in case of ongoing hw restart the
1372 * ref is already taken, so don't take it again.
1373 */
1374 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1375 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1376
1377 /* async_handlers_wk is now blocked */
1378
1379 /*
1380 * The work item could be running or queued if the
1381 * ROC time event stops just as we get here.
1382 */
1383 cancel_work_sync(&mvm->roc_done_wk);
1384
1385 iwl_trans_stop_device(mvm->trans);
1386
1387 iwl_mvm_async_handlers_purge(mvm);
1388 /* async_handlers_list is empty and will stay empty: HW is stopped */
1389
1390 /* the fw is stopped, the aux sta is dead: clean up driver state */
1391 iwl_mvm_del_aux_sta(mvm);
1392
1393 /*
1394 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1395 * won't be called in this case).
1396 */
1397 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1398
1399 mvm->ucode_loaded = false;
1400 }
1401
1402 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1403 {
1404 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1405
1406 flush_work(&mvm->d0i3_exit_work);
1407 flush_work(&mvm->async_handlers_wk);
1408 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1409 iwl_mvm_free_fw_dump_desc(mvm);
1410
1411 mutex_lock(&mvm->mutex);
1412 __iwl_mvm_mac_stop(mvm);
1413 mutex_unlock(&mvm->mutex);
1414
1415 /*
1416 * The worker might have been waiting for the mutex, let it run and
1417 * discover that its list is now empty.
1418 */
1419 cancel_work_sync(&mvm->async_handlers_wk);
1420 }
1421
1422 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1423 {
1424 u16 i;
1425
1426 lockdep_assert_held(&mvm->mutex);
1427
1428 for (i = 0; i < NUM_PHY_CTX; i++)
1429 if (!mvm->phy_ctxts[i].ref)
1430 return &mvm->phy_ctxts[i];
1431
1432 IWL_ERR(mvm, "No available PHY context\n");
1433 return NULL;
1434 }
1435
1436 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1437 s8 tx_power)
1438 {
1439 /* FW is in charge of regulatory enforcement */
1440 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1441 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1442 .pwr_restriction = cpu_to_le16(tx_power),
1443 };
1444
1445 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1446 sizeof(reduce_txpwr_cmd),
1447 &reduce_txpwr_cmd);
1448 }
1449
1450 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1451 struct ieee80211_vif *vif)
1452 {
1453 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1454 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1455 int ret;
1456
1457 mvmvif->mvm = mvm;
1458
1459 /*
1460 * make sure D0i3 exit is completed, otherwise a target access
1461 * during tx queue configuration could be done when still in
1462 * D0i3 state.
1463 */
1464 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1465 if (ret)
1466 return ret;
1467
1468 /*
1469 * Not much to do here. The stack will not allow interface
1470 * types or combinations that we didn't advertise, so we
1471 * don't really have to check the types.
1472 */
1473
1474 mutex_lock(&mvm->mutex);
1475
1476 /* make sure that beacon statistics don't go backwards with FW reset */
1477 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1478 mvmvif->beacon_stats.accu_num_beacons +=
1479 mvmvif->beacon_stats.num_beacons;
1480
1481 /* Allocate resources for the MAC context, and add it to the fw */
1482 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1483 if (ret)
1484 goto out_unlock;
1485
1486 /* Counting number of interfaces is needed for legacy PM */
1487 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1488 mvm->vif_count++;
1489
1490 /*
1491 * The AP binding flow can be done only after the beacon
1492 * template is configured (which happens only in the mac80211
1493 * start_ap() flow), and adding the broadcast station can happen
1494 * only after the binding.
1495 * In addition, since modifying the MAC before adding a bcast
1496 * station is not allowed by the FW, delay the adding of MAC context to
1497 * the point where we can also add the bcast station.
1498 * In short: there's not much we can do at this point, other than
1499 * allocating resources :)
1500 */
1501 if (vif->type == NL80211_IFTYPE_AP ||
1502 vif->type == NL80211_IFTYPE_ADHOC) {
1503 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1504 if (ret) {
1505 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1506 goto out_release;
1507 }
1508
1509 iwl_mvm_vif_dbgfs_register(mvm, vif);
1510 goto out_unlock;
1511 }
1512
1513 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1514 if (ret)
1515 goto out_release;
1516
1517 ret = iwl_mvm_power_update_mac(mvm);
1518 if (ret)
1519 goto out_remove_mac;
1520
1521 /* beacon filtering */
1522 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1523 if (ret)
1524 goto out_remove_mac;
1525
1526 if (!mvm->bf_allowed_vif &&
1527 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1528 mvm->bf_allowed_vif = mvmvif;
1529 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1530 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1531 }
1532
1533 /*
1534 * P2P_DEVICE interface does not have a channel context assigned to it,
1535 * so a dedicated PHY context is allocated to it and the corresponding
1536 * MAC context is bound to it at this stage.
1537 */
1538 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1539
1540 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1541 if (!mvmvif->phy_ctxt) {
1542 ret = -ENOSPC;
1543 goto out_free_bf;
1544 }
1545
1546 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1547 ret = iwl_mvm_binding_add_vif(mvm, vif);
1548 if (ret)
1549 goto out_unref_phy;
1550
1551 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1552 if (ret)
1553 goto out_unbind;
1554
1555 /* Save a pointer to p2p device vif, so it can later be used to
1556 * update the p2p device MAC when a GO is started/stopped */
1557 mvm->p2p_device_vif = vif;
1558 }
1559
1560 iwl_mvm_vif_dbgfs_register(mvm, vif);
1561 goto out_unlock;
1562
1563 out_unbind:
1564 iwl_mvm_binding_remove_vif(mvm, vif);
1565 out_unref_phy:
1566 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1567 out_free_bf:
1568 if (mvm->bf_allowed_vif == mvmvif) {
1569 mvm->bf_allowed_vif = NULL;
1570 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1571 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1572 }
1573 out_remove_mac:
1574 mvmvif->phy_ctxt = NULL;
1575 iwl_mvm_mac_ctxt_remove(mvm, vif);
1576 out_release:
1577 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1578 mvm->vif_count--;
1579
1580 iwl_mvm_mac_ctxt_release(mvm, vif);
1581 out_unlock:
1582 mutex_unlock(&mvm->mutex);
1583
1584 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1585
1586 return ret;
1587 }
1588
1589 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1590 struct ieee80211_vif *vif)
1591 {
1592 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1593
1594 if (tfd_msk) {
1595 mutex_lock(&mvm->mutex);
1596 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1597 mutex_unlock(&mvm->mutex);
1598 }
1599
1600 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1601 /*
1602 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1603 * We assume here that all the packets sent to the OFFCHANNEL
1604 * queue are sent in ROC session.
1605 */
1606 flush_work(&mvm->roc_done_wk);
1607 } else {
1608 /*
1609 * By now, all the AC queues are empty. The AGG queues are
1610 * empty too. We already got all the Tx responses for all the
1611 * packets in the queues. The drain work can have been
1612 * triggered. Flush it.
1613 */
1614 flush_work(&mvm->sta_drained_wk);
1615 }
1616 }
1617
1618 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1619 struct ieee80211_vif *vif)
1620 {
1621 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1622 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1623
1624 iwl_mvm_prepare_mac_removal(mvm, vif);
1625
1626 mutex_lock(&mvm->mutex);
1627
1628 if (mvm->bf_allowed_vif == mvmvif) {
1629 mvm->bf_allowed_vif = NULL;
1630 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1631 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1632 }
1633
1634 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1635
1636 /*
1637 * For AP/GO interface, the tear down of the resources allocated to the
1638 * interface is be handled as part of the stop_ap flow.
1639 */
1640 if (vif->type == NL80211_IFTYPE_AP ||
1641 vif->type == NL80211_IFTYPE_ADHOC) {
1642 #ifdef CONFIG_NL80211_TESTMODE
1643 if (vif == mvm->noa_vif) {
1644 mvm->noa_vif = NULL;
1645 mvm->noa_duration = 0;
1646 }
1647 #endif
1648 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1649 goto out_release;
1650 }
1651
1652 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1653 mvm->p2p_device_vif = NULL;
1654 iwl_mvm_rm_bcast_sta(mvm, vif);
1655 iwl_mvm_binding_remove_vif(mvm, vif);
1656 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1657 mvmvif->phy_ctxt = NULL;
1658 }
1659
1660 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1661 mvm->vif_count--;
1662
1663 iwl_mvm_power_update_mac(mvm);
1664 iwl_mvm_mac_ctxt_remove(mvm, vif);
1665
1666 out_release:
1667 iwl_mvm_mac_ctxt_release(mvm, vif);
1668 mutex_unlock(&mvm->mutex);
1669 }
1670
1671 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1672 {
1673 return 0;
1674 }
1675
1676 struct iwl_mvm_mc_iter_data {
1677 struct iwl_mvm *mvm;
1678 int port_id;
1679 };
1680
1681 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1682 struct ieee80211_vif *vif)
1683 {
1684 struct iwl_mvm_mc_iter_data *data = _data;
1685 struct iwl_mvm *mvm = data->mvm;
1686 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1687 int ret, len;
1688
1689 /* if we don't have free ports, mcast frames will be dropped */
1690 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1691 return;
1692
1693 if (vif->type != NL80211_IFTYPE_STATION ||
1694 !vif->bss_conf.assoc)
1695 return;
1696
1697 cmd->port_id = data->port_id++;
1698 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1699 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1700
1701 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1702 if (ret)
1703 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1704 }
1705
1706 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1707 {
1708 struct iwl_mvm_mc_iter_data iter_data = {
1709 .mvm = mvm,
1710 };
1711
1712 lockdep_assert_held(&mvm->mutex);
1713
1714 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1715 return;
1716
1717 ieee80211_iterate_active_interfaces_atomic(
1718 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1719 iwl_mvm_mc_iface_iterator, &iter_data);
1720 }
1721
1722 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1723 struct netdev_hw_addr_list *mc_list)
1724 {
1725 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1726 struct iwl_mcast_filter_cmd *cmd;
1727 struct netdev_hw_addr *addr;
1728 int addr_count;
1729 bool pass_all;
1730 int len;
1731
1732 addr_count = netdev_hw_addr_list_count(mc_list);
1733 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1734 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1735 if (pass_all)
1736 addr_count = 0;
1737
1738 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1739 cmd = kzalloc(len, GFP_ATOMIC);
1740 if (!cmd)
1741 return 0;
1742
1743 if (pass_all) {
1744 cmd->pass_all = 1;
1745 return (u64)(unsigned long)cmd;
1746 }
1747
1748 netdev_hw_addr_list_for_each(addr, mc_list) {
1749 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1750 cmd->count, addr->addr);
1751 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1752 addr->addr, ETH_ALEN);
1753 cmd->count++;
1754 }
1755
1756 return (u64)(unsigned long)cmd;
1757 }
1758
1759 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1760 unsigned int changed_flags,
1761 unsigned int *total_flags,
1762 u64 multicast)
1763 {
1764 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1765 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1766
1767 mutex_lock(&mvm->mutex);
1768
1769 /* replace previous configuration */
1770 kfree(mvm->mcast_filter_cmd);
1771 mvm->mcast_filter_cmd = cmd;
1772
1773 if (!cmd)
1774 goto out;
1775
1776 iwl_mvm_recalc_multicast(mvm);
1777 out:
1778 mutex_unlock(&mvm->mutex);
1779 *total_flags = 0;
1780 }
1781
1782 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1783 struct iwl_bcast_iter_data {
1784 struct iwl_mvm *mvm;
1785 struct iwl_bcast_filter_cmd *cmd;
1786 u8 current_filter;
1787 };
1788
1789 static void
1790 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1791 const struct iwl_fw_bcast_filter *in_filter,
1792 struct iwl_fw_bcast_filter *out_filter)
1793 {
1794 struct iwl_fw_bcast_filter_attr *attr;
1795 int i;
1796
1797 memcpy(out_filter, in_filter, sizeof(*out_filter));
1798
1799 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1800 attr = &out_filter->attrs[i];
1801
1802 if (!attr->mask)
1803 break;
1804
1805 switch (attr->reserved1) {
1806 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1807 if (vif->bss_conf.arp_addr_cnt != 1) {
1808 attr->mask = 0;
1809 continue;
1810 }
1811
1812 attr->val = vif->bss_conf.arp_addr_list[0];
1813 break;
1814 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1815 attr->val = *(__be32 *)&vif->addr[2];
1816 break;
1817 default:
1818 break;
1819 }
1820 attr->reserved1 = 0;
1821 out_filter->num_attrs++;
1822 }
1823 }
1824
1825 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1826 struct ieee80211_vif *vif)
1827 {
1828 struct iwl_bcast_iter_data *data = _data;
1829 struct iwl_mvm *mvm = data->mvm;
1830 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1831 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1832 struct iwl_fw_bcast_mac *bcast_mac;
1833 int i;
1834
1835 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1836 return;
1837
1838 bcast_mac = &cmd->macs[mvmvif->id];
1839
1840 /*
1841 * enable filtering only for associated stations, but not for P2P
1842 * Clients
1843 */
1844 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1845 !vif->bss_conf.assoc)
1846 return;
1847
1848 bcast_mac->default_discard = 1;
1849
1850 /* copy all configured filters */
1851 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1852 /*
1853 * Make sure we don't exceed our filters limit.
1854 * if there is still a valid filter to be configured,
1855 * be on the safe side and just allow bcast for this mac.
1856 */
1857 if (WARN_ON_ONCE(data->current_filter >=
1858 ARRAY_SIZE(cmd->filters))) {
1859 bcast_mac->default_discard = 0;
1860 bcast_mac->attached_filters = 0;
1861 break;
1862 }
1863
1864 iwl_mvm_set_bcast_filter(vif,
1865 &mvm->bcast_filters[i],
1866 &cmd->filters[data->current_filter]);
1867
1868 /* skip current filter if it contains no attributes */
1869 if (!cmd->filters[data->current_filter].num_attrs)
1870 continue;
1871
1872 /* attach the filter to current mac */
1873 bcast_mac->attached_filters |=
1874 cpu_to_le16(BIT(data->current_filter));
1875
1876 data->current_filter++;
1877 }
1878 }
1879
1880 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1881 struct iwl_bcast_filter_cmd *cmd)
1882 {
1883 struct iwl_bcast_iter_data iter_data = {
1884 .mvm = mvm,
1885 .cmd = cmd,
1886 };
1887
1888 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1889 return false;
1890
1891 memset(cmd, 0, sizeof(*cmd));
1892 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1893 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1894
1895 #ifdef CONFIG_IWLWIFI_DEBUGFS
1896 /* use debugfs filters/macs if override is configured */
1897 if (mvm->dbgfs_bcast_filtering.override) {
1898 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1899 sizeof(cmd->filters));
1900 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1901 sizeof(cmd->macs));
1902 return true;
1903 }
1904 #endif
1905
1906 /* if no filters are configured, do nothing */
1907 if (!mvm->bcast_filters)
1908 return false;
1909
1910 /* configure and attach these filters for each associated sta vif */
1911 ieee80211_iterate_active_interfaces(
1912 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1913 iwl_mvm_bcast_filter_iterator, &iter_data);
1914
1915 return true;
1916 }
1917 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1918 struct ieee80211_vif *vif)
1919 {
1920 struct iwl_bcast_filter_cmd cmd;
1921
1922 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1923 return 0;
1924
1925 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1926 return 0;
1927
1928 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1929 sizeof(cmd), &cmd);
1930 }
1931 #else
1932 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1933 struct ieee80211_vif *vif)
1934 {
1935 return 0;
1936 }
1937 #endif
1938
1939 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1940 struct ieee80211_vif *vif,
1941 struct ieee80211_bss_conf *bss_conf,
1942 u32 changes)
1943 {
1944 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1945 int ret;
1946
1947 /*
1948 * Re-calculate the tsf id, as the master-slave relations depend on the
1949 * beacon interval, which was not known when the station interface was
1950 * added.
1951 */
1952 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1953 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1954
1955 /*
1956 * If we're not associated yet, take the (new) BSSID before associating
1957 * so the firmware knows. If we're already associated, then use the old
1958 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1959 * branch for disassociation below.
1960 */
1961 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1962 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1963
1964 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1965 if (ret)
1966 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1967
1968 /* after sending it once, adopt mac80211 data */
1969 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1970 mvmvif->associated = bss_conf->assoc;
1971
1972 if (changes & BSS_CHANGED_ASSOC) {
1973 if (bss_conf->assoc) {
1974 /* clear statistics to get clean beacon counter */
1975 iwl_mvm_request_statistics(mvm, true);
1976 memset(&mvmvif->beacon_stats, 0,
1977 sizeof(mvmvif->beacon_stats));
1978
1979 /* add quota for this interface */
1980 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1981 if (ret) {
1982 IWL_ERR(mvm, "failed to update quotas\n");
1983 return;
1984 }
1985
1986 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1987 &mvm->status)) {
1988 /*
1989 * If we're restarting then the firmware will
1990 * obviously have lost synchronisation with
1991 * the AP. It will attempt to synchronise by
1992 * itself, but we can make it more reliable by
1993 * scheduling a session protection time event.
1994 *
1995 * The firmware needs to receive a beacon to
1996 * catch up with synchronisation, use 110% of
1997 * the beacon interval.
1998 *
1999 * Set a large maximum delay to allow for more
2000 * than a single interface.
2001 */
2002 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2003 iwl_mvm_protect_session(mvm, vif, dur, dur,
2004 5 * dur, false);
2005 }
2006
2007 iwl_mvm_sf_update(mvm, vif, false);
2008 iwl_mvm_power_vif_assoc(mvm, vif);
2009 if (vif->p2p) {
2010 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2011 iwl_mvm_update_smps(mvm, vif,
2012 IWL_MVM_SMPS_REQ_PROT,
2013 IEEE80211_SMPS_DYNAMIC);
2014 }
2015 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2016 /*
2017 * If update fails - SF might be running in associated
2018 * mode while disassociated - which is forbidden.
2019 */
2020 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2021 "Failed to update SF upon disassociation\n");
2022
2023 /* remove AP station now that the MAC is unassoc */
2024 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
2025 if (ret)
2026 IWL_ERR(mvm, "failed to remove AP station\n");
2027
2028 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2029 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
2030 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
2031 /* remove quota for this interface */
2032 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2033 if (ret)
2034 IWL_ERR(mvm, "failed to update quotas\n");
2035
2036 if (vif->p2p)
2037 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2038
2039 /* this will take the cleared BSSID from bss_conf */
2040 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2041 if (ret)
2042 IWL_ERR(mvm,
2043 "failed to update MAC %pM (clear after unassoc)\n",
2044 vif->addr);
2045 }
2046
2047 iwl_mvm_recalc_multicast(mvm);
2048 iwl_mvm_configure_bcast_filter(mvm, vif);
2049
2050 /* reset rssi values */
2051 mvmvif->bf_data.ave_beacon_signal = 0;
2052
2053 iwl_mvm_bt_coex_vif_change(mvm);
2054 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2055 IEEE80211_SMPS_AUTOMATIC);
2056 } else if (changes & BSS_CHANGED_BEACON_INFO) {
2057 /*
2058 * We received a beacon _after_ association so
2059 * remove the session protection.
2060 */
2061 iwl_mvm_remove_time_event(mvm, mvmvif,
2062 &mvmvif->time_event_data);
2063 }
2064
2065 if (changes & BSS_CHANGED_BEACON_INFO) {
2066 iwl_mvm_sf_update(mvm, vif, false);
2067 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2068 }
2069
2070 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
2071 ret = iwl_mvm_power_update_mac(mvm);
2072 if (ret)
2073 IWL_ERR(mvm, "failed to update power mode\n");
2074 }
2075
2076 if (changes & BSS_CHANGED_TXPOWER) {
2077 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2078 bss_conf->txpower);
2079 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2080 }
2081
2082 if (changes & BSS_CHANGED_CQM) {
2083 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2084 /* reset cqm events tracking */
2085 mvmvif->bf_data.last_cqm_event = 0;
2086 if (mvmvif->bf_data.bf_enabled) {
2087 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2088 if (ret)
2089 IWL_ERR(mvm,
2090 "failed to update CQM thresholds\n");
2091 }
2092 }
2093
2094 if (changes & BSS_CHANGED_ARP_FILTER) {
2095 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2096 iwl_mvm_configure_bcast_filter(mvm, vif);
2097 }
2098 }
2099
2100 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2101 struct ieee80211_vif *vif)
2102 {
2103 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2104 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2105 int ret;
2106
2107 /*
2108 * iwl_mvm_mac_ctxt_add() might read directly from the device
2109 * (the system time), so make sure it is available.
2110 */
2111 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2112 if (ret)
2113 return ret;
2114
2115 mutex_lock(&mvm->mutex);
2116
2117 /* Send the beacon template */
2118 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2119 if (ret)
2120 goto out_unlock;
2121
2122 /*
2123 * Re-calculate the tsf id, as the master-slave relations depend on the
2124 * beacon interval, which was not known when the AP interface was added.
2125 */
2126 if (vif->type == NL80211_IFTYPE_AP)
2127 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2128
2129 /* Add the mac context */
2130 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2131 if (ret)
2132 goto out_unlock;
2133
2134 /* Perform the binding */
2135 ret = iwl_mvm_binding_add_vif(mvm, vif);
2136 if (ret)
2137 goto out_remove;
2138
2139 /* Send the bcast station. At this stage the TBTT and DTIM time events
2140 * are added and applied to the scheduler */
2141 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2142 if (ret)
2143 goto out_unbind;
2144
2145 /* must be set before quota calculations */
2146 mvmvif->ap_ibss_active = true;
2147
2148 /* power updated needs to be done before quotas */
2149 iwl_mvm_power_update_mac(mvm);
2150
2151 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2152 if (ret)
2153 goto out_quota_failed;
2154
2155 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2156 if (vif->p2p && mvm->p2p_device_vif)
2157 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2158
2159 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2160
2161 iwl_mvm_bt_coex_vif_change(mvm);
2162
2163 /* we don't support TDLS during DCM */
2164 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2165 iwl_mvm_teardown_tdls_peers(mvm);
2166
2167 mutex_unlock(&mvm->mutex);
2168 return 0;
2169
2170 out_quota_failed:
2171 iwl_mvm_power_update_mac(mvm);
2172 mvmvif->ap_ibss_active = false;
2173 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2174 out_unbind:
2175 iwl_mvm_binding_remove_vif(mvm, vif);
2176 out_remove:
2177 iwl_mvm_mac_ctxt_remove(mvm, vif);
2178 out_unlock:
2179 mutex_unlock(&mvm->mutex);
2180 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2181 return ret;
2182 }
2183
2184 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2185 struct ieee80211_vif *vif)
2186 {
2187 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2188 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2189
2190 iwl_mvm_prepare_mac_removal(mvm, vif);
2191
2192 mutex_lock(&mvm->mutex);
2193
2194 /* Handle AP stop while in CSA */
2195 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2196 iwl_mvm_remove_time_event(mvm, mvmvif,
2197 &mvmvif->time_event_data);
2198 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2199 }
2200
2201 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2202 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2203 mvm->csa_tx_block_bcn_timeout = 0;
2204 }
2205
2206 mvmvif->ap_ibss_active = false;
2207 mvm->ap_last_beacon_gp2 = 0;
2208
2209 iwl_mvm_bt_coex_vif_change(mvm);
2210
2211 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2212
2213 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2214 if (vif->p2p && mvm->p2p_device_vif)
2215 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2216
2217 iwl_mvm_update_quotas(mvm, false, NULL);
2218 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2219 iwl_mvm_binding_remove_vif(mvm, vif);
2220
2221 iwl_mvm_power_update_mac(mvm);
2222
2223 iwl_mvm_mac_ctxt_remove(mvm, vif);
2224
2225 mutex_unlock(&mvm->mutex);
2226 }
2227
2228 static void
2229 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2230 struct ieee80211_vif *vif,
2231 struct ieee80211_bss_conf *bss_conf,
2232 u32 changes)
2233 {
2234 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2235
2236 /* Changes will be applied when the AP/IBSS is started */
2237 if (!mvmvif->ap_ibss_active)
2238 return;
2239
2240 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2241 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2242 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2243 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2244
2245 /* Need to send a new beacon template to the FW */
2246 if (changes & BSS_CHANGED_BEACON &&
2247 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2248 IWL_WARN(mvm, "Failed updating beacon data\n");
2249
2250 if (changes & BSS_CHANGED_TXPOWER) {
2251 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2252 bss_conf->txpower);
2253 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2254 }
2255
2256 }
2257
2258 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2259 struct ieee80211_vif *vif,
2260 struct ieee80211_bss_conf *bss_conf,
2261 u32 changes)
2262 {
2263 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2264
2265 /*
2266 * iwl_mvm_bss_info_changed_station() might call
2267 * iwl_mvm_protect_session(), which reads directly from
2268 * the device (the system time), so make sure it is available.
2269 */
2270 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2271 return;
2272
2273 mutex_lock(&mvm->mutex);
2274
2275 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2276 iwl_mvm_scan_offload_stop(mvm, true);
2277
2278 switch (vif->type) {
2279 case NL80211_IFTYPE_STATION:
2280 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2281 break;
2282 case NL80211_IFTYPE_AP:
2283 case NL80211_IFTYPE_ADHOC:
2284 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2285 break;
2286 default:
2287 /* shouldn't happen */
2288 WARN_ON_ONCE(1);
2289 }
2290
2291 mutex_unlock(&mvm->mutex);
2292 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2293 }
2294
2295 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
2296 enum iwl_scan_status scan_type)
2297 {
2298 int ret;
2299 bool wait_for_handlers = false;
2300
2301 mutex_lock(&mvm->mutex);
2302
2303 if (mvm->scan_status != scan_type) {
2304 ret = 0;
2305 /* make sure there are no pending notifications */
2306 wait_for_handlers = true;
2307 goto out;
2308 }
2309
2310 switch (scan_type) {
2311 case IWL_MVM_SCAN_SCHED:
2312 ret = iwl_mvm_scan_offload_stop(mvm, true);
2313 break;
2314 case IWL_MVM_SCAN_OS:
2315 ret = iwl_mvm_cancel_scan(mvm);
2316 break;
2317 case IWL_MVM_SCAN_NONE:
2318 default:
2319 WARN_ON_ONCE(1);
2320 ret = -EINVAL;
2321 break;
2322 }
2323 if (ret)
2324 goto out;
2325
2326 wait_for_handlers = true;
2327 out:
2328 mutex_unlock(&mvm->mutex);
2329
2330 /* make sure we consume the completion notification */
2331 if (wait_for_handlers)
2332 iwl_mvm_wait_for_async_handlers(mvm);
2333
2334 return ret;
2335 }
2336 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2337 struct ieee80211_vif *vif,
2338 struct ieee80211_scan_request *hw_req)
2339 {
2340 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2341 struct cfg80211_scan_request *req = &hw_req->req;
2342 int ret;
2343
2344 if (req->n_channels == 0 ||
2345 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
2346 return -EINVAL;
2347
2348 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2349 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
2350 if (ret)
2351 return ret;
2352 }
2353
2354 mutex_lock(&mvm->mutex);
2355
2356 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2357 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2358 ret = -EBUSY;
2359 goto out;
2360 }
2361
2362 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2363 ret = -EBUSY;
2364 goto out;
2365 }
2366
2367 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
2368
2369 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
2370 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
2371 else
2372 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
2373
2374 if (ret)
2375 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
2376 out:
2377 mutex_unlock(&mvm->mutex);
2378 return ret;
2379 }
2380
2381 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2382 struct ieee80211_vif *vif)
2383 {
2384 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2385
2386 mutex_lock(&mvm->mutex);
2387
2388 iwl_mvm_cancel_scan(mvm);
2389
2390 mutex_unlock(&mvm->mutex);
2391 }
2392
2393 static void
2394 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2395 struct ieee80211_sta *sta, u16 tids,
2396 int num_frames,
2397 enum ieee80211_frame_release_type reason,
2398 bool more_data)
2399 {
2400 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2401
2402 /* Called when we need to transmit (a) frame(s) from mac80211 */
2403
2404 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2405 tids, more_data, false);
2406 }
2407
2408 static void
2409 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2410 struct ieee80211_sta *sta, u16 tids,
2411 int num_frames,
2412 enum ieee80211_frame_release_type reason,
2413 bool more_data)
2414 {
2415 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2416
2417 /* Called when we need to transmit (a) frame(s) from agg queue */
2418
2419 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2420 tids, more_data, true);
2421 }
2422
2423 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2424 struct ieee80211_vif *vif,
2425 enum sta_notify_cmd cmd,
2426 struct ieee80211_sta *sta)
2427 {
2428 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2429 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2430 int tid;
2431
2432 switch (cmd) {
2433 case STA_NOTIFY_SLEEP:
2434 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2435 ieee80211_sta_block_awake(hw, sta, true);
2436 spin_lock_bh(&mvmsta->lock);
2437 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2438 struct iwl_mvm_tid_data *tid_data;
2439
2440 tid_data = &mvmsta->tid_data[tid];
2441 if (tid_data->state != IWL_AGG_ON &&
2442 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2443 continue;
2444 if (iwl_mvm_tid_queued(tid_data) == 0)
2445 continue;
2446 ieee80211_sta_set_buffered(sta, tid, true);
2447 }
2448 spin_unlock_bh(&mvmsta->lock);
2449 /*
2450 * The fw updates the STA to be asleep. Tx packets on the Tx
2451 * queues to this station will not be transmitted. The fw will
2452 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2453 */
2454 break;
2455 case STA_NOTIFY_AWAKE:
2456 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2457 break;
2458 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2459 break;
2460 default:
2461 break;
2462 }
2463 }
2464
2465 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2466 struct ieee80211_vif *vif,
2467 struct ieee80211_sta *sta)
2468 {
2469 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2470 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2471
2472 /*
2473 * This is called before mac80211 does RCU synchronisation,
2474 * so here we already invalidate our internal RCU-protected
2475 * station pointer. The rest of the code will thus no longer
2476 * be able to find the station this way, and we don't rely
2477 * on further RCU synchronisation after the sta_state()
2478 * callback deleted the station.
2479 */
2480 mutex_lock(&mvm->mutex);
2481 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2482 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2483 ERR_PTR(-ENOENT));
2484 mutex_unlock(&mvm->mutex);
2485 }
2486
2487 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2488 const u8 *bssid)
2489 {
2490 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2491 return;
2492
2493 if (iwlwifi_mod_params.uapsd_disable) {
2494 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2495 return;
2496 }
2497
2498 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2499 }
2500
2501 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2502 struct ieee80211_vif *vif,
2503 struct ieee80211_sta *sta,
2504 enum ieee80211_sta_state old_state,
2505 enum ieee80211_sta_state new_state)
2506 {
2507 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2508 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2509 int ret;
2510
2511 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2512 sta->addr, old_state, new_state);
2513
2514 /* this would be a mac80211 bug ... but don't crash */
2515 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2516 return -EINVAL;
2517
2518 /* if a STA is being removed, reuse its ID */
2519 flush_work(&mvm->sta_drained_wk);
2520
2521 mutex_lock(&mvm->mutex);
2522 if (old_state == IEEE80211_STA_NOTEXIST &&
2523 new_state == IEEE80211_STA_NONE) {
2524 /*
2525 * Firmware bug - it'll crash if the beacon interval is less
2526 * than 16. We can't avoid connecting at all, so refuse the
2527 * station state change, this will cause mac80211 to abandon
2528 * attempts to connect to this AP, and eventually wpa_s will
2529 * blacklist the AP...
2530 */
2531 if (vif->type == NL80211_IFTYPE_STATION &&
2532 vif->bss_conf.beacon_int < 16) {
2533 IWL_ERR(mvm,
2534 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2535 sta->addr, vif->bss_conf.beacon_int);
2536 ret = -EINVAL;
2537 goto out_unlock;
2538 }
2539
2540 if (sta->tdls &&
2541 (vif->p2p ||
2542 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2543 IWL_MVM_TDLS_STA_COUNT ||
2544 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2545 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2546 ret = -EBUSY;
2547 goto out_unlock;
2548 }
2549
2550 ret = iwl_mvm_add_sta(mvm, vif, sta);
2551 if (sta->tdls && ret == 0)
2552 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2553 } else if (old_state == IEEE80211_STA_NONE &&
2554 new_state == IEEE80211_STA_AUTH) {
2555 /*
2556 * EBS may be disabled due to previous failures reported by FW.
2557 * Reset EBS status here assuming environment has been changed.
2558 */
2559 mvm->last_ebs_successful = true;
2560 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2561 ret = 0;
2562 } else if (old_state == IEEE80211_STA_AUTH &&
2563 new_state == IEEE80211_STA_ASSOC) {
2564 ret = iwl_mvm_update_sta(mvm, vif, sta);
2565 if (ret == 0)
2566 iwl_mvm_rs_rate_init(mvm, sta,
2567 mvmvif->phy_ctxt->channel->band,
2568 true);
2569 } else if (old_state == IEEE80211_STA_ASSOC &&
2570 new_state == IEEE80211_STA_AUTHORIZED) {
2571
2572 /* we don't support TDLS during DCM */
2573 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2574 iwl_mvm_teardown_tdls_peers(mvm);
2575
2576 /* enable beacon filtering */
2577 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2578 ret = 0;
2579 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2580 new_state == IEEE80211_STA_ASSOC) {
2581 /* disable beacon filtering */
2582 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2583 ret = 0;
2584 } else if (old_state == IEEE80211_STA_ASSOC &&
2585 new_state == IEEE80211_STA_AUTH) {
2586 ret = 0;
2587 } else if (old_state == IEEE80211_STA_AUTH &&
2588 new_state == IEEE80211_STA_NONE) {
2589 ret = 0;
2590 } else if (old_state == IEEE80211_STA_NONE &&
2591 new_state == IEEE80211_STA_NOTEXIST) {
2592 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2593 if (sta->tdls)
2594 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2595 } else {
2596 ret = -EIO;
2597 }
2598 out_unlock:
2599 mutex_unlock(&mvm->mutex);
2600
2601 if (sta->tdls && ret == 0) {
2602 if (old_state == IEEE80211_STA_NOTEXIST &&
2603 new_state == IEEE80211_STA_NONE)
2604 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2605 else if (old_state == IEEE80211_STA_NONE &&
2606 new_state == IEEE80211_STA_NOTEXIST)
2607 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2608 }
2609
2610 return ret;
2611 }
2612
2613 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2614 {
2615 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2616
2617 mvm->rts_threshold = value;
2618
2619 return 0;
2620 }
2621
2622 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2623 struct ieee80211_vif *vif,
2624 struct ieee80211_sta *sta, u32 changed)
2625 {
2626 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2627
2628 if (vif->type == NL80211_IFTYPE_STATION &&
2629 changed & IEEE80211_RC_NSS_CHANGED)
2630 iwl_mvm_sf_update(mvm, vif, false);
2631 }
2632
2633 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2634 struct ieee80211_vif *vif, u16 ac,
2635 const struct ieee80211_tx_queue_params *params)
2636 {
2637 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2638 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2639
2640 mvmvif->queue_params[ac] = *params;
2641
2642 /*
2643 * No need to update right away, we'll get BSS_CHANGED_QOS
2644 * The exception is P2P_DEVICE interface which needs immediate update.
2645 */
2646 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2647 int ret;
2648
2649 mutex_lock(&mvm->mutex);
2650 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2651 mutex_unlock(&mvm->mutex);
2652 return ret;
2653 }
2654 return 0;
2655 }
2656
2657 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2658 struct ieee80211_vif *vif)
2659 {
2660 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2661 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2662 200 + vif->bss_conf.beacon_int);
2663 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2664 100 + vif->bss_conf.beacon_int);
2665
2666 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2667 return;
2668
2669 /*
2670 * iwl_mvm_protect_session() reads directly from the device
2671 * (the system time), so make sure it is available.
2672 */
2673 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2674 return;
2675
2676 mutex_lock(&mvm->mutex);
2677 /* Try really hard to protect the session and hear a beacon */
2678 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2679 mutex_unlock(&mvm->mutex);
2680
2681 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2682 }
2683
2684 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2685 struct ieee80211_vif *vif,
2686 struct cfg80211_sched_scan_request *req,
2687 struct ieee80211_scan_ies *ies)
2688 {
2689 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2690 int ret;
2691
2692 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2693 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2694 if (ret)
2695 return ret;
2696 }
2697
2698 mutex_lock(&mvm->mutex);
2699
2700 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2701 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
2702 ret = -EBUSY;
2703 goto out;
2704 }
2705
2706 if (!vif->bss_conf.idle) {
2707 ret = -EBUSY;
2708 goto out;
2709 }
2710
2711 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2712 ret = -EBUSY;
2713 goto out;
2714 }
2715
2716 ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
2717 if (ret)
2718 mvm->scan_status = IWL_MVM_SCAN_NONE;
2719
2720 out:
2721 mutex_unlock(&mvm->mutex);
2722 return ret;
2723 }
2724
2725 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2726 struct ieee80211_vif *vif)
2727 {
2728 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2729 int ret;
2730
2731 mutex_lock(&mvm->mutex);
2732 ret = iwl_mvm_scan_offload_stop(mvm, false);
2733 mutex_unlock(&mvm->mutex);
2734 iwl_mvm_wait_for_async_handlers(mvm);
2735
2736 return ret;
2737
2738 }
2739
2740 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2741 enum set_key_cmd cmd,
2742 struct ieee80211_vif *vif,
2743 struct ieee80211_sta *sta,
2744 struct ieee80211_key_conf *key)
2745 {
2746 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2747 int ret;
2748
2749 if (iwlwifi_mod_params.sw_crypto) {
2750 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2751 return -EOPNOTSUPP;
2752 }
2753
2754 switch (key->cipher) {
2755 case WLAN_CIPHER_SUITE_TKIP:
2756 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2757 /* fall-through */
2758 case WLAN_CIPHER_SUITE_CCMP:
2759 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2760 break;
2761 case WLAN_CIPHER_SUITE_AES_CMAC:
2762 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2763 break;
2764 case WLAN_CIPHER_SUITE_WEP40:
2765 case WLAN_CIPHER_SUITE_WEP104:
2766 /* For non-client mode, only use WEP keys for TX as we probably
2767 * don't have a station yet anyway and would then have to keep
2768 * track of the keys, linking them to each of the clients/peers
2769 * as they appear. For now, don't do that, for performance WEP
2770 * offload doesn't really matter much, but we need it for some
2771 * other offload features in client mode.
2772 */
2773 if (vif->type != NL80211_IFTYPE_STATION)
2774 return 0;
2775 break;
2776 default:
2777 /* currently FW supports only one optional cipher scheme */
2778 if (hw->n_cipher_schemes &&
2779 hw->cipher_schemes->cipher == key->cipher)
2780 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2781 else
2782 return -EOPNOTSUPP;
2783 }
2784
2785 mutex_lock(&mvm->mutex);
2786
2787 switch (cmd) {
2788 case SET_KEY:
2789 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2790 vif->type == NL80211_IFTYPE_AP) && !sta) {
2791 /*
2792 * GTK on AP interface is a TX-only key, return 0;
2793 * on IBSS they're per-station and because we're lazy
2794 * we don't support them for RX, so do the same.
2795 */
2796 ret = 0;
2797 key->hw_key_idx = STA_KEY_IDX_INVALID;
2798 break;
2799 }
2800
2801 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2802 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2803 if (ret) {
2804 IWL_WARN(mvm, "set key failed\n");
2805 /*
2806 * can't add key for RX, but we don't need it
2807 * in the device for TX so still return 0
2808 */
2809 key->hw_key_idx = STA_KEY_IDX_INVALID;
2810 ret = 0;
2811 }
2812
2813 break;
2814 case DISABLE_KEY:
2815 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2816 ret = 0;
2817 break;
2818 }
2819
2820 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2821 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2822 break;
2823 default:
2824 ret = -EINVAL;
2825 }
2826
2827 mutex_unlock(&mvm->mutex);
2828 return ret;
2829 }
2830
2831 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2832 struct ieee80211_vif *vif,
2833 struct ieee80211_key_conf *keyconf,
2834 struct ieee80211_sta *sta,
2835 u32 iv32, u16 *phase1key)
2836 {
2837 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2838
2839 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2840 return;
2841
2842 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2843 }
2844
2845
2846 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2847 struct iwl_rx_packet *pkt, void *data)
2848 {
2849 struct iwl_mvm *mvm =
2850 container_of(notif_wait, struct iwl_mvm, notif_wait);
2851 struct iwl_hs20_roc_res *resp;
2852 int resp_len = iwl_rx_packet_payload_len(pkt);
2853 struct iwl_mvm_time_event_data *te_data = data;
2854
2855 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2856 return true;
2857
2858 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2859 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2860 return true;
2861 }
2862
2863 resp = (void *)pkt->data;
2864
2865 IWL_DEBUG_TE(mvm,
2866 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2867 resp->status, resp->event_unique_id);
2868
2869 te_data->uid = le32_to_cpu(resp->event_unique_id);
2870 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2871 te_data->uid);
2872
2873 spin_lock_bh(&mvm->time_event_lock);
2874 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2875 spin_unlock_bh(&mvm->time_event_lock);
2876
2877 return true;
2878 }
2879
2880 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2881 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2882 struct ieee80211_channel *channel,
2883 struct ieee80211_vif *vif,
2884 int duration)
2885 {
2886 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2887 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2888 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2889 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2890 struct iwl_notification_wait wait_time_event;
2891 struct iwl_hs20_roc_req aux_roc_req = {
2892 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2893 .id_and_color =
2894 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2895 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2896 /* Set the channel info data */
2897 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2898 PHY_BAND_24 : PHY_BAND_5,
2899 .channel_info.channel = channel->hw_value,
2900 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2901 /* Set the time and duration */
2902 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2903 .apply_time_max_delay =
2904 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2905 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2906 };
2907
2908 /* Set the node address */
2909 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2910
2911 lockdep_assert_held(&mvm->mutex);
2912
2913 spin_lock_bh(&mvm->time_event_lock);
2914
2915 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2916 spin_unlock_bh(&mvm->time_event_lock);
2917 return -EIO;
2918 }
2919
2920 te_data->vif = vif;
2921 te_data->duration = duration;
2922 te_data->id = HOT_SPOT_CMD;
2923
2924 spin_unlock_bh(&mvm->time_event_lock);
2925
2926 /*
2927 * Use a notification wait, which really just processes the
2928 * command response and doesn't wait for anything, in order
2929 * to be able to process the response and get the UID inside
2930 * the RX path. Using CMD_WANT_SKB doesn't work because it
2931 * stores the buffer and then wakes up this thread, by which
2932 * time another notification (that the time event started)
2933 * might already be processed unsuccessfully.
2934 */
2935 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2936 time_event_response,
2937 ARRAY_SIZE(time_event_response),
2938 iwl_mvm_rx_aux_roc, te_data);
2939
2940 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2941 &aux_roc_req);
2942
2943 if (res) {
2944 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2945 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2946 goto out_clear_te;
2947 }
2948
2949 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2950 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2951 /* should never fail */
2952 WARN_ON_ONCE(res);
2953
2954 if (res) {
2955 out_clear_te:
2956 spin_lock_bh(&mvm->time_event_lock);
2957 iwl_mvm_te_clear_data(mvm, te_data);
2958 spin_unlock_bh(&mvm->time_event_lock);
2959 }
2960
2961 return res;
2962 }
2963
2964 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2965 struct ieee80211_vif *vif,
2966 struct ieee80211_channel *channel,
2967 int duration,
2968 enum ieee80211_roc_type type)
2969 {
2970 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2971 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2972 struct cfg80211_chan_def chandef;
2973 struct iwl_mvm_phy_ctxt *phy_ctxt;
2974 int ret, i;
2975
2976 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2977 duration, type);
2978
2979 mutex_lock(&mvm->mutex);
2980
2981 switch (vif->type) {
2982 case NL80211_IFTYPE_STATION:
2983 if (mvm->fw->ucode_capa.capa[0] &
2984 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
2985 /* Use aux roc framework (HS20) */
2986 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2987 vif, duration);
2988 goto out_unlock;
2989 }
2990 IWL_ERR(mvm, "hotspot not supported\n");
2991 ret = -EINVAL;
2992 goto out_unlock;
2993 case NL80211_IFTYPE_P2P_DEVICE:
2994 /* handle below */
2995 break;
2996 default:
2997 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2998 ret = -EINVAL;
2999 goto out_unlock;
3000 }
3001
3002 for (i = 0; i < NUM_PHY_CTX; i++) {
3003 phy_ctxt = &mvm->phy_ctxts[i];
3004 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3005 continue;
3006
3007 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3008 /*
3009 * Unbind the P2P_DEVICE from the current PHY context,
3010 * and if the PHY context is not used remove it.
3011 */
3012 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3013 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3014 goto out_unlock;
3015
3016 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3017
3018 /* Bind the P2P_DEVICE to the current PHY Context */
3019 mvmvif->phy_ctxt = phy_ctxt;
3020
3021 ret = iwl_mvm_binding_add_vif(mvm, vif);
3022 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3023 goto out_unlock;
3024
3025 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3026 goto schedule_time_event;
3027 }
3028 }
3029
3030 /* Need to update the PHY context only if the ROC channel changed */
3031 if (channel == mvmvif->phy_ctxt->channel)
3032 goto schedule_time_event;
3033
3034 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3035
3036 /*
3037 * Change the PHY context configuration as it is currently referenced
3038 * only by the P2P Device MAC
3039 */
3040 if (mvmvif->phy_ctxt->ref == 1) {
3041 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3042 &chandef, 1, 1);
3043 if (ret)
3044 goto out_unlock;
3045 } else {
3046 /*
3047 * The PHY context is shared with other MACs. Need to remove the
3048 * P2P Device from the binding, allocate an new PHY context and
3049 * create a new binding
3050 */
3051 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3052 if (!phy_ctxt) {
3053 ret = -ENOSPC;
3054 goto out_unlock;
3055 }
3056
3057 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3058 1, 1);
3059 if (ret) {
3060 IWL_ERR(mvm, "Failed to change PHY context\n");
3061 goto out_unlock;
3062 }
3063
3064 /* Unbind the P2P_DEVICE from the current PHY context */
3065 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3066 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3067 goto out_unlock;
3068
3069 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3070
3071 /* Bind the P2P_DEVICE to the new allocated PHY context */
3072 mvmvif->phy_ctxt = phy_ctxt;
3073
3074 ret = iwl_mvm_binding_add_vif(mvm, vif);
3075 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3076 goto out_unlock;
3077
3078 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3079 }
3080
3081 schedule_time_event:
3082 /* Schedule the time events */
3083 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3084
3085 out_unlock:
3086 mutex_unlock(&mvm->mutex);
3087 IWL_DEBUG_MAC80211(mvm, "leave\n");
3088 return ret;
3089 }
3090
3091 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3092 {
3093 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3094
3095 IWL_DEBUG_MAC80211(mvm, "enter\n");
3096
3097 mutex_lock(&mvm->mutex);
3098 iwl_mvm_stop_roc(mvm);
3099 mutex_unlock(&mvm->mutex);
3100
3101 IWL_DEBUG_MAC80211(mvm, "leave\n");
3102 return 0;
3103 }
3104
3105 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3106 struct ieee80211_chanctx_conf *ctx)
3107 {
3108 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3109 struct iwl_mvm_phy_ctxt *phy_ctxt;
3110 int ret;
3111
3112 lockdep_assert_held(&mvm->mutex);
3113
3114 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3115
3116 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3117 if (!phy_ctxt) {
3118 ret = -ENOSPC;
3119 goto out;
3120 }
3121
3122 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3123 ctx->rx_chains_static,
3124 ctx->rx_chains_dynamic);
3125 if (ret) {
3126 IWL_ERR(mvm, "Failed to add PHY context\n");
3127 goto out;
3128 }
3129
3130 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3131 *phy_ctxt_id = phy_ctxt->id;
3132 out:
3133 return ret;
3134 }
3135
3136 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3137 struct ieee80211_chanctx_conf *ctx)
3138 {
3139 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3140 int ret;
3141
3142 mutex_lock(&mvm->mutex);
3143 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3144 mutex_unlock(&mvm->mutex);
3145
3146 return ret;
3147 }
3148
3149 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3150 struct ieee80211_chanctx_conf *ctx)
3151 {
3152 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3153 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3154
3155 lockdep_assert_held(&mvm->mutex);
3156
3157 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3158 }
3159
3160 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3161 struct ieee80211_chanctx_conf *ctx)
3162 {
3163 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3164
3165 mutex_lock(&mvm->mutex);
3166 __iwl_mvm_remove_chanctx(mvm, ctx);
3167 mutex_unlock(&mvm->mutex);
3168 }
3169
3170 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3171 struct ieee80211_chanctx_conf *ctx,
3172 u32 changed)
3173 {
3174 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3175 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3176 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3177
3178 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3179 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3180 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3181 IEEE80211_CHANCTX_CHANGE_RADAR |
3182 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3183 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3184 phy_ctxt->ref, changed))
3185 return;
3186
3187 mutex_lock(&mvm->mutex);
3188 iwl_mvm_bt_coex_vif_change(mvm);
3189 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3190 ctx->rx_chains_static,
3191 ctx->rx_chains_dynamic);
3192 mutex_unlock(&mvm->mutex);
3193 }
3194
3195 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3196 struct ieee80211_vif *vif,
3197 struct ieee80211_chanctx_conf *ctx,
3198 bool switching_chanctx)
3199 {
3200 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3201 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3202 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3203 int ret;
3204
3205 lockdep_assert_held(&mvm->mutex);
3206
3207 mvmvif->phy_ctxt = phy_ctxt;
3208
3209 switch (vif->type) {
3210 case NL80211_IFTYPE_AP:
3211 /* only needed if we're switching chanctx (i.e. during CSA) */
3212 if (switching_chanctx) {
3213 mvmvif->ap_ibss_active = true;
3214 break;
3215 }
3216 case NL80211_IFTYPE_ADHOC:
3217 /*
3218 * The AP binding flow is handled as part of the start_ap flow
3219 * (in bss_info_changed), similarly for IBSS.
3220 */
3221 ret = 0;
3222 goto out;
3223 case NL80211_IFTYPE_STATION:
3224 break;
3225 case NL80211_IFTYPE_MONITOR:
3226 /* always disable PS when a monitor interface is active */
3227 mvmvif->ps_disabled = true;
3228 break;
3229 default:
3230 ret = -EINVAL;
3231 goto out;
3232 }
3233
3234 ret = iwl_mvm_binding_add_vif(mvm, vif);
3235 if (ret)
3236 goto out;
3237
3238 /*
3239 * Power state must be updated before quotas,
3240 * otherwise fw will complain.
3241 */
3242 iwl_mvm_power_update_mac(mvm);
3243
3244 /* Setting the quota at this stage is only required for monitor
3245 * interfaces. For the other types, the bss_info changed flow
3246 * will handle quota settings.
3247 */
3248 if (vif->type == NL80211_IFTYPE_MONITOR) {
3249 mvmvif->monitor_active = true;
3250 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3251 if (ret)
3252 goto out_remove_binding;
3253 }
3254
3255 /* Handle binding during CSA */
3256 if (vif->type == NL80211_IFTYPE_AP) {
3257 iwl_mvm_update_quotas(mvm, false, NULL);
3258 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3259 }
3260
3261 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3262 u32 duration = 2 * vif->bss_conf.beacon_int;
3263
3264 /* iwl_mvm_protect_session() reads directly from the
3265 * device (the system time), so make sure it is
3266 * available.
3267 */
3268 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3269 if (ret)
3270 goto out_remove_binding;
3271
3272 /* Protect the session to make sure we hear the first
3273 * beacon on the new channel.
3274 */
3275 iwl_mvm_protect_session(mvm, vif, duration, duration,
3276 vif->bss_conf.beacon_int / 2,
3277 true);
3278
3279 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3280
3281 iwl_mvm_update_quotas(mvm, false, NULL);
3282 }
3283
3284 goto out;
3285
3286 out_remove_binding:
3287 iwl_mvm_binding_remove_vif(mvm, vif);
3288 iwl_mvm_power_update_mac(mvm);
3289 out:
3290 if (ret)
3291 mvmvif->phy_ctxt = NULL;
3292 return ret;
3293 }
3294 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3295 struct ieee80211_vif *vif,
3296 struct ieee80211_chanctx_conf *ctx)
3297 {
3298 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3299 int ret;
3300
3301 mutex_lock(&mvm->mutex);
3302 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3303 mutex_unlock(&mvm->mutex);
3304
3305 return ret;
3306 }
3307
3308 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3309 struct ieee80211_vif *vif,
3310 struct ieee80211_chanctx_conf *ctx,
3311 bool switching_chanctx)
3312 {
3313 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3314 struct ieee80211_vif *disabled_vif = NULL;
3315
3316 lockdep_assert_held(&mvm->mutex);
3317
3318 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3319
3320 switch (vif->type) {
3321 case NL80211_IFTYPE_ADHOC:
3322 goto out;
3323 case NL80211_IFTYPE_MONITOR:
3324 mvmvif->monitor_active = false;
3325 mvmvif->ps_disabled = false;
3326 break;
3327 case NL80211_IFTYPE_AP:
3328 /* This part is triggered only during CSA */
3329 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3330 goto out;
3331
3332 mvmvif->csa_countdown = false;
3333
3334 /* Set CS bit on all the stations */
3335 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3336
3337 /* Save blocked iface, the timeout is set on the next beacon */
3338 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3339
3340 mvmvif->ap_ibss_active = false;
3341 break;
3342 case NL80211_IFTYPE_STATION:
3343 if (!switching_chanctx)
3344 break;
3345
3346 disabled_vif = vif;
3347
3348 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3349 break;
3350 default:
3351 break;
3352 }
3353
3354 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3355 iwl_mvm_binding_remove_vif(mvm, vif);
3356
3357 out:
3358 mvmvif->phy_ctxt = NULL;
3359 iwl_mvm_power_update_mac(mvm);
3360 }
3361
3362 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3363 struct ieee80211_vif *vif,
3364 struct ieee80211_chanctx_conf *ctx)
3365 {
3366 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3367
3368 mutex_lock(&mvm->mutex);
3369 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3370 mutex_unlock(&mvm->mutex);
3371 }
3372
3373 static int
3374 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3375 struct ieee80211_vif_chanctx_switch *vifs)
3376 {
3377 int ret;
3378
3379 mutex_lock(&mvm->mutex);
3380 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3381 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3382
3383 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3384 if (ret) {
3385 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3386 goto out_reassign;
3387 }
3388
3389 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3390 true);
3391 if (ret) {
3392 IWL_ERR(mvm,
3393 "failed to assign new_ctx during channel switch\n");
3394 goto out_remove;
3395 }
3396
3397 /* we don't support TDLS during DCM - can be caused by channel switch */
3398 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3399 iwl_mvm_teardown_tdls_peers(mvm);
3400
3401 goto out;
3402
3403 out_remove:
3404 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3405
3406 out_reassign:
3407 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3408 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3409 goto out_restart;
3410 }
3411
3412 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3413 true)) {
3414 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3415 goto out_restart;
3416 }
3417
3418 goto out;
3419
3420 out_restart:
3421 /* things keep failing, better restart the hw */
3422 iwl_mvm_nic_restart(mvm, false);
3423
3424 out:
3425 mutex_unlock(&mvm->mutex);
3426
3427 return ret;
3428 }
3429
3430 static int
3431 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3432 struct ieee80211_vif_chanctx_switch *vifs)
3433 {
3434 int ret;
3435
3436 mutex_lock(&mvm->mutex);
3437 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3438
3439 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3440 true);
3441 if (ret) {
3442 IWL_ERR(mvm,
3443 "failed to assign new_ctx during channel switch\n");
3444 goto out_reassign;
3445 }
3446
3447 goto out;
3448
3449 out_reassign:
3450 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3451 true)) {
3452 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3453 goto out_restart;
3454 }
3455
3456 goto out;
3457
3458 out_restart:
3459 /* things keep failing, better restart the hw */
3460 iwl_mvm_nic_restart(mvm, false);
3461
3462 out:
3463 mutex_unlock(&mvm->mutex);
3464
3465 return ret;
3466 }
3467
3468 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3469 struct ieee80211_vif_chanctx_switch *vifs,
3470 int n_vifs,
3471 enum ieee80211_chanctx_switch_mode mode)
3472 {
3473 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3474 int ret;
3475
3476 /* we only support a single-vif right now */
3477 if (n_vifs > 1)
3478 return -EOPNOTSUPP;
3479
3480 switch (mode) {
3481 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3482 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3483 break;
3484 case CHANCTX_SWMODE_REASSIGN_VIF:
3485 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3486 break;
3487 default:
3488 ret = -EOPNOTSUPP;
3489 break;
3490 }
3491
3492 return ret;
3493 }
3494
3495 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3496 struct ieee80211_sta *sta,
3497 bool set)
3498 {
3499 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3500 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3501
3502 if (!mvm_sta || !mvm_sta->vif) {
3503 IWL_ERR(mvm, "Station is not associated to a vif\n");
3504 return -EINVAL;
3505 }
3506
3507 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3508 }
3509
3510 #ifdef CONFIG_NL80211_TESTMODE
3511 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3512 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3513 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3514 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3515 };
3516
3517 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3518 struct ieee80211_vif *vif,
3519 void *data, int len)
3520 {
3521 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3522 int err;
3523 u32 noa_duration;
3524
3525 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3526 if (err)
3527 return err;
3528
3529 if (!tb[IWL_MVM_TM_ATTR_CMD])
3530 return -EINVAL;
3531
3532 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3533 case IWL_MVM_TM_CMD_SET_NOA:
3534 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3535 !vif->bss_conf.enable_beacon ||
3536 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3537 return -EINVAL;
3538
3539 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3540 if (noa_duration >= vif->bss_conf.beacon_int)
3541 return -EINVAL;
3542
3543 mvm->noa_duration = noa_duration;
3544 mvm->noa_vif = vif;
3545
3546 return iwl_mvm_update_quotas(mvm, false, NULL);
3547 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3548 /* must be associated client vif - ignore authorized */
3549 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3550 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3551 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3552 return -EINVAL;
3553
3554 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3555 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3556 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3557 }
3558
3559 return -EOPNOTSUPP;
3560 }
3561
3562 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3563 struct ieee80211_vif *vif,
3564 void *data, int len)
3565 {
3566 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3567 int err;
3568
3569 mutex_lock(&mvm->mutex);
3570 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3571 mutex_unlock(&mvm->mutex);
3572
3573 return err;
3574 }
3575 #endif
3576
3577 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3578 struct ieee80211_vif *vif,
3579 struct ieee80211_channel_switch *chsw)
3580 {
3581 /* By implementing this operation, we prevent mac80211 from
3582 * starting its own channel switch timer, so that we can call
3583 * ieee80211_chswitch_done() ourselves at the right time
3584 * (which is when the absence time event starts).
3585 */
3586
3587 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3588 "dummy channel switch op\n");
3589 }
3590
3591 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3592 struct ieee80211_vif *vif,
3593 struct ieee80211_channel_switch *chsw)
3594 {
3595 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3596 struct ieee80211_vif *csa_vif;
3597 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3598 u32 apply_time;
3599 int ret;
3600
3601 mutex_lock(&mvm->mutex);
3602
3603 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3604 chsw->chandef.center_freq1);
3605
3606 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH,
3607 NULL, 0);
3608
3609 switch (vif->type) {
3610 case NL80211_IFTYPE_AP:
3611 csa_vif =
3612 rcu_dereference_protected(mvm->csa_vif,
3613 lockdep_is_held(&mvm->mutex));
3614 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3615 "Another CSA is already in progress")) {
3616 ret = -EBUSY;
3617 goto out_unlock;
3618 }
3619
3620 rcu_assign_pointer(mvm->csa_vif, vif);
3621
3622 if (WARN_ONCE(mvmvif->csa_countdown,
3623 "Previous CSA countdown didn't complete")) {
3624 ret = -EBUSY;
3625 goto out_unlock;
3626 }
3627
3628 break;
3629 case NL80211_IFTYPE_STATION:
3630 /* Schedule the time event to a bit before beacon 1,
3631 * to make sure we're in the new channel when the
3632 * GO/AP arrives.
3633 */
3634 apply_time = chsw->device_timestamp +
3635 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3636 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3637
3638 if (chsw->block_tx)
3639 iwl_mvm_csa_client_absent(mvm, vif);
3640
3641 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3642 apply_time);
3643 if (mvmvif->bf_data.bf_enabled) {
3644 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3645 if (ret)
3646 goto out_unlock;
3647 }
3648
3649 break;
3650 default:
3651 break;
3652 }
3653
3654 mvmvif->ps_disabled = true;
3655
3656 ret = iwl_mvm_power_update_ps(mvm);
3657 if (ret)
3658 goto out_unlock;
3659
3660 /* we won't be on this channel any longer */
3661 iwl_mvm_teardown_tdls_peers(mvm);
3662
3663 out_unlock:
3664 mutex_unlock(&mvm->mutex);
3665
3666 return ret;
3667 }
3668
3669 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3670 struct ieee80211_vif *vif)
3671 {
3672 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3673 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3674 int ret;
3675
3676 mutex_lock(&mvm->mutex);
3677
3678 if (vif->type == NL80211_IFTYPE_STATION) {
3679 struct iwl_mvm_sta *mvmsta;
3680
3681 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3682 mvmvif->ap_sta_id);
3683
3684 if (WARN_ON(!mvmsta)) {
3685 ret = -EIO;
3686 goto out_unlock;
3687 }
3688
3689 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3690
3691 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3692
3693 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3694 if (ret)
3695 goto out_unlock;
3696
3697 iwl_mvm_stop_session_protection(mvm, vif);
3698 }
3699
3700 mvmvif->ps_disabled = false;
3701
3702 ret = iwl_mvm_power_update_ps(mvm);
3703
3704 out_unlock:
3705 mutex_unlock(&mvm->mutex);
3706
3707 return ret;
3708 }
3709
3710 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3711 struct ieee80211_vif *vif, u32 queues, bool drop)
3712 {
3713 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3714 struct iwl_mvm_vif *mvmvif;
3715 struct iwl_mvm_sta *mvmsta;
3716 struct ieee80211_sta *sta;
3717 int i;
3718 u32 msk = 0;
3719
3720 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3721 return;
3722
3723 mutex_lock(&mvm->mutex);
3724 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3725
3726 /* flush the AP-station and all TDLS peers */
3727 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3728 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3729 lockdep_is_held(&mvm->mutex));
3730 if (IS_ERR_OR_NULL(sta))
3731 continue;
3732
3733 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3734 if (mvmsta->vif != vif)
3735 continue;
3736
3737 /* make sure only TDLS peers or the AP are flushed */
3738 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3739
3740 msk |= mvmsta->tfd_queue_msk;
3741 }
3742
3743 if (drop) {
3744 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3745 IWL_ERR(mvm, "flush request fail\n");
3746 mutex_unlock(&mvm->mutex);
3747 } else {
3748 mutex_unlock(&mvm->mutex);
3749
3750 /* this can take a while, and we may need/want other operations
3751 * to succeed while doing this, so do it without the mutex held
3752 */
3753 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3754 }
3755 }
3756
3757 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3758 struct survey_info *survey)
3759 {
3760 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3761 int ret;
3762
3763 memset(survey, 0, sizeof(*survey));
3764
3765 /* only support global statistics right now */
3766 if (idx != 0)
3767 return -ENOENT;
3768
3769 if (!(mvm->fw->ucode_capa.capa[0] &
3770 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3771 return -ENOENT;
3772
3773 mutex_lock(&mvm->mutex);
3774
3775 if (mvm->ucode_loaded) {
3776 ret = iwl_mvm_request_statistics(mvm, false);
3777 if (ret)
3778 goto out;
3779 }
3780
3781 survey->filled = SURVEY_INFO_TIME |
3782 SURVEY_INFO_TIME_RX |
3783 SURVEY_INFO_TIME_TX |
3784 SURVEY_INFO_TIME_SCAN;
3785 survey->time = mvm->accu_radio_stats.on_time_rf +
3786 mvm->radio_stats.on_time_rf;
3787 do_div(survey->time, USEC_PER_MSEC);
3788
3789 survey->time_rx = mvm->accu_radio_stats.rx_time +
3790 mvm->radio_stats.rx_time;
3791 do_div(survey->time_rx, USEC_PER_MSEC);
3792
3793 survey->time_tx = mvm->accu_radio_stats.tx_time +
3794 mvm->radio_stats.tx_time;
3795 do_div(survey->time_tx, USEC_PER_MSEC);
3796
3797 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3798 mvm->radio_stats.on_time_scan;
3799 do_div(survey->time_scan, USEC_PER_MSEC);
3800
3801 out:
3802 mutex_unlock(&mvm->mutex);
3803 return ret;
3804 }
3805
3806 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3807 struct ieee80211_vif *vif,
3808 struct ieee80211_sta *sta,
3809 struct station_info *sinfo)
3810 {
3811 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3812 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3813 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3814
3815 if (!(mvm->fw->ucode_capa.capa[0] &
3816 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3817 return;
3818
3819 /* if beacon filtering isn't on mac80211 does it anyway */
3820 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3821 return;
3822
3823 if (!vif->bss_conf.assoc)
3824 return;
3825
3826 mutex_lock(&mvm->mutex);
3827
3828 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3829 goto unlock;
3830
3831 if (iwl_mvm_request_statistics(mvm, false))
3832 goto unlock;
3833
3834 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3835 mvmvif->beacon_stats.accu_num_beacons;
3836 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3837 if (mvmvif->beacon_stats.avg_signal) {
3838 /* firmware only reports a value after RXing a few beacons */
3839 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3840 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3841 }
3842 unlock:
3843 mutex_unlock(&mvm->mutex);
3844 }
3845
3846 const struct ieee80211_ops iwl_mvm_hw_ops = {
3847 .tx = iwl_mvm_mac_tx,
3848 .ampdu_action = iwl_mvm_mac_ampdu_action,
3849 .start = iwl_mvm_mac_start,
3850 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3851 .stop = iwl_mvm_mac_stop,
3852 .add_interface = iwl_mvm_mac_add_interface,
3853 .remove_interface = iwl_mvm_mac_remove_interface,
3854 .config = iwl_mvm_mac_config,
3855 .prepare_multicast = iwl_mvm_prepare_multicast,
3856 .configure_filter = iwl_mvm_configure_filter,
3857 .bss_info_changed = iwl_mvm_bss_info_changed,
3858 .hw_scan = iwl_mvm_mac_hw_scan,
3859 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3860 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3861 .sta_state = iwl_mvm_mac_sta_state,
3862 .sta_notify = iwl_mvm_mac_sta_notify,
3863 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3864 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3865 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3866 .sta_rc_update = iwl_mvm_sta_rc_update,
3867 .conf_tx = iwl_mvm_mac_conf_tx,
3868 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3869 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3870 .flush = iwl_mvm_mac_flush,
3871 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3872 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3873 .set_key = iwl_mvm_mac_set_key,
3874 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3875 .remain_on_channel = iwl_mvm_roc,
3876 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3877 .add_chanctx = iwl_mvm_add_chanctx,
3878 .remove_chanctx = iwl_mvm_remove_chanctx,
3879 .change_chanctx = iwl_mvm_change_chanctx,
3880 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3881 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3882 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3883
3884 .start_ap = iwl_mvm_start_ap_ibss,
3885 .stop_ap = iwl_mvm_stop_ap_ibss,
3886 .join_ibss = iwl_mvm_start_ap_ibss,
3887 .leave_ibss = iwl_mvm_stop_ap_ibss,
3888
3889 .set_tim = iwl_mvm_set_tim,
3890
3891 .channel_switch = iwl_mvm_channel_switch,
3892 .pre_channel_switch = iwl_mvm_pre_channel_switch,
3893 .post_channel_switch = iwl_mvm_post_channel_switch,
3894
3895 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3896 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3897 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3898
3899 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3900
3901 #ifdef CONFIG_PM_SLEEP
3902 /* look at d3.c */
3903 .suspend = iwl_mvm_suspend,
3904 .resume = iwl_mvm_resume,
3905 .set_wakeup = iwl_mvm_set_wakeup,
3906 .set_rekey_data = iwl_mvm_set_rekey_data,
3907 #if IS_ENABLED(CONFIG_IPV6)
3908 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3909 #endif
3910 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3911 #endif
3912 .get_survey = iwl_mvm_mac_get_survey,
3913 .sta_statistics = iwl_mvm_mac_sta_statistics,
3914 };
Linux kernel - Deliverables
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