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iwlwifi: mvm: prepare the code towards TSO implementation
[deliverable/linux.git] / drivers / net / wireless / intel / 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 <linuxwifi@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 <linux/time.h>
74 #include <net/mac80211.h>
75 #include <net/ieee80211_radiotap.h>
76 #include <net/tcp.h>
77
78 #include "iwl-op-mode.h"
79 #include "iwl-io.h"
80 #include "mvm.h"
81 #include "sta.h"
82 #include "time-event.h"
83 #include "iwl-eeprom-parse.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 #include "fw-dbg.h"
91
92 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
93 {
94 .max = 1,
95 .types = BIT(NL80211_IFTYPE_STATION),
96 },
97 {
98 .max = 1,
99 .types = BIT(NL80211_IFTYPE_AP) |
100 BIT(NL80211_IFTYPE_P2P_CLIENT) |
101 BIT(NL80211_IFTYPE_P2P_GO),
102 },
103 {
104 .max = 1,
105 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
106 },
107 };
108
109 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
110 {
111 .num_different_channels = 2,
112 .max_interfaces = 3,
113 .limits = iwl_mvm_limits,
114 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
115 },
116 };
117
118 #ifdef CONFIG_PM_SLEEP
119 static const struct nl80211_wowlan_tcp_data_token_feature
120 iwl_mvm_wowlan_tcp_token_feature = {
121 .min_len = 0,
122 .max_len = 255,
123 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
124 };
125
126 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
127 .tok = &iwl_mvm_wowlan_tcp_token_feature,
128 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
129 sizeof(struct ethhdr) -
130 sizeof(struct iphdr) -
131 sizeof(struct tcphdr),
132 .data_interval_max = 65535, /* __le16 in API */
133 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
134 sizeof(struct ethhdr) -
135 sizeof(struct iphdr) -
136 sizeof(struct tcphdr),
137 .seq = true,
138 };
139 #endif
140
141 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
142 /*
143 * Use the reserved field to indicate magic values.
144 * these values will only be used internally by the driver,
145 * and won't make it to the fw (reserved will be 0).
146 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
147 * be the vif's ip address. in case there is not a single
148 * ip address (0, or more than 1), this attribute will
149 * be skipped.
150 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
151 * the LSB bytes of the vif's mac address
152 */
153 enum {
154 BC_FILTER_MAGIC_NONE = 0,
155 BC_FILTER_MAGIC_IP,
156 BC_FILTER_MAGIC_MAC,
157 };
158
159 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
160 {
161 /* arp */
162 .discard = 0,
163 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
164 .attrs = {
165 {
166 /* frame type - arp, hw type - ethernet */
167 .offset_type =
168 BCAST_FILTER_OFFSET_PAYLOAD_START,
169 .offset = sizeof(rfc1042_header),
170 .val = cpu_to_be32(0x08060001),
171 .mask = cpu_to_be32(0xffffffff),
172 },
173 {
174 /* arp dest ip */
175 .offset_type =
176 BCAST_FILTER_OFFSET_PAYLOAD_START,
177 .offset = sizeof(rfc1042_header) + 2 +
178 sizeof(struct arphdr) +
179 ETH_ALEN + sizeof(__be32) +
180 ETH_ALEN,
181 .mask = cpu_to_be32(0xffffffff),
182 /* mark it as special field */
183 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
184 },
185 },
186 },
187 {
188 /* dhcp offer bcast */
189 .discard = 0,
190 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
191 .attrs = {
192 {
193 /* udp dest port - 68 (bootp client)*/
194 .offset_type = BCAST_FILTER_OFFSET_IP_END,
195 .offset = offsetof(struct udphdr, dest),
196 .val = cpu_to_be32(0x00440000),
197 .mask = cpu_to_be32(0xffff0000),
198 },
199 {
200 /* dhcp - lsb bytes of client hw address */
201 .offset_type = BCAST_FILTER_OFFSET_IP_END,
202 .offset = 38,
203 .mask = cpu_to_be32(0xffffffff),
204 /* mark it as special field */
205 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
206 },
207 },
208 },
209 /* last filter must be empty */
210 {},
211 };
212 #endif
213
214 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
215 {
216 if (!iwl_mvm_is_d0i3_supported(mvm))
217 return;
218
219 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
220 spin_lock_bh(&mvm->refs_lock);
221 mvm->refs[ref_type]++;
222 spin_unlock_bh(&mvm->refs_lock);
223 iwl_trans_ref(mvm->trans);
224 }
225
226 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
227 {
228 if (!iwl_mvm_is_d0i3_supported(mvm))
229 return;
230
231 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
232 spin_lock_bh(&mvm->refs_lock);
233 WARN_ON(!mvm->refs[ref_type]--);
234 spin_unlock_bh(&mvm->refs_lock);
235 iwl_trans_unref(mvm->trans);
236 }
237
238 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
239 enum iwl_mvm_ref_type except_ref)
240 {
241 int i, j;
242
243 if (!iwl_mvm_is_d0i3_supported(mvm))
244 return;
245
246 spin_lock_bh(&mvm->refs_lock);
247 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
248 if (except_ref == i || !mvm->refs[i])
249 continue;
250
251 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
252 i, mvm->refs[i]);
253 for (j = 0; j < mvm->refs[i]; j++)
254 iwl_trans_unref(mvm->trans);
255 mvm->refs[i] = 0;
256 }
257 spin_unlock_bh(&mvm->refs_lock);
258 }
259
260 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
261 {
262 int i;
263 bool taken = false;
264
265 if (!iwl_mvm_is_d0i3_supported(mvm))
266 return true;
267
268 spin_lock_bh(&mvm->refs_lock);
269 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
270 if (mvm->refs[i]) {
271 taken = true;
272 break;
273 }
274 }
275 spin_unlock_bh(&mvm->refs_lock);
276
277 return taken;
278 }
279
280 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
281 {
282 iwl_mvm_ref(mvm, ref_type);
283
284 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
285 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
286 HZ)) {
287 WARN_ON_ONCE(1);
288 iwl_mvm_unref(mvm, ref_type);
289 return -EIO;
290 }
291
292 return 0;
293 }
294
295 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
296 {
297 int i;
298
299 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
300 for (i = 0; i < NUM_PHY_CTX; i++) {
301 mvm->phy_ctxts[i].id = i;
302 mvm->phy_ctxts[i].ref = 0;
303 }
304 }
305
306 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
307 const char *alpha2,
308 enum iwl_mcc_source src_id,
309 bool *changed)
310 {
311 struct ieee80211_regdomain *regd = NULL;
312 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
313 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
314 struct iwl_mcc_update_resp *resp;
315
316 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
317
318 lockdep_assert_held(&mvm->mutex);
319
320 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
321 if (IS_ERR_OR_NULL(resp)) {
322 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
323 PTR_ERR_OR_ZERO(resp));
324 goto out;
325 }
326
327 if (changed)
328 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
329
330 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
331 __le32_to_cpu(resp->n_channels),
332 resp->channels,
333 __le16_to_cpu(resp->mcc));
334 /* Store the return source id */
335 src_id = resp->source_id;
336 kfree(resp);
337 if (IS_ERR_OR_NULL(regd)) {
338 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
339 PTR_ERR_OR_ZERO(regd));
340 goto out;
341 }
342
343 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
344 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
345 mvm->lar_regdom_set = true;
346 mvm->mcc_src = src_id;
347
348 out:
349 return regd;
350 }
351
352 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
353 {
354 bool changed;
355 struct ieee80211_regdomain *regd;
356
357 if (!iwl_mvm_is_lar_supported(mvm))
358 return;
359
360 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
361 if (!IS_ERR_OR_NULL(regd)) {
362 /* only update the regulatory core if changed */
363 if (changed)
364 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
365
366 kfree(regd);
367 }
368 }
369
370 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
371 bool *changed)
372 {
373 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
374 iwl_mvm_is_wifi_mcc_supported(mvm) ?
375 MCC_SOURCE_GET_CURRENT :
376 MCC_SOURCE_OLD_FW, changed);
377 }
378
379 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
380 {
381 enum iwl_mcc_source used_src;
382 struct ieee80211_regdomain *regd;
383 int ret;
384 bool changed;
385 const struct ieee80211_regdomain *r =
386 rtnl_dereference(mvm->hw->wiphy->regd);
387
388 if (!r)
389 return -ENOENT;
390
391 /* save the last source in case we overwrite it below */
392 used_src = mvm->mcc_src;
393 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
394 /* Notify the firmware we support wifi location updates */
395 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
396 if (!IS_ERR_OR_NULL(regd))
397 kfree(regd);
398 }
399
400 /* Now set our last stored MCC and source */
401 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
402 &changed);
403 if (IS_ERR_OR_NULL(regd))
404 return -EIO;
405
406 /* update cfg80211 if the regdomain was changed */
407 if (changed)
408 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
409 else
410 ret = 0;
411
412 kfree(regd);
413 return ret;
414 }
415
416 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
417 {
418 struct ieee80211_hw *hw = mvm->hw;
419 int num_mac, ret, i;
420 static const u32 mvm_ciphers[] = {
421 WLAN_CIPHER_SUITE_WEP40,
422 WLAN_CIPHER_SUITE_WEP104,
423 WLAN_CIPHER_SUITE_TKIP,
424 WLAN_CIPHER_SUITE_CCMP,
425 };
426
427 /* Tell mac80211 our characteristics */
428 ieee80211_hw_set(hw, SIGNAL_DBM);
429 ieee80211_hw_set(hw, SPECTRUM_MGMT);
430 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
431 ieee80211_hw_set(hw, QUEUE_CONTROL);
432 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
433 ieee80211_hw_set(hw, SUPPORTS_PS);
434 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
435 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
436 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
437 ieee80211_hw_set(hw, CONNECTION_MONITOR);
438 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
439 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
440 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
441
442 if (mvm->trans->max_skb_frags)
443 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
444
445 hw->queues = mvm->first_agg_queue;
446 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
447 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
448 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
449 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
450 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
451 hw->rate_control_algorithm = "iwl-mvm-rs";
452 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
453 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
454
455 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2);
456 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
457 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
458 hw->wiphy->cipher_suites = mvm->ciphers;
459
460 /*
461 * Enable 11w if advertised by firmware and software crypto
462 * is not enabled (as the firmware will interpret some mgmt
463 * packets, so enabling it with software crypto isn't safe)
464 */
465 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
466 !iwlwifi_mod_params.sw_crypto) {
467 ieee80211_hw_set(hw, MFP_CAPABLE);
468 mvm->ciphers[hw->wiphy->n_cipher_suites] =
469 WLAN_CIPHER_SUITE_AES_CMAC;
470 hw->wiphy->n_cipher_suites++;
471 }
472
473 /* currently FW API supports only one optional cipher scheme */
474 if (mvm->fw->cs[0].cipher) {
475 mvm->hw->n_cipher_schemes = 1;
476 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
477 mvm->ciphers[hw->wiphy->n_cipher_suites] =
478 mvm->fw->cs[0].cipher;
479 hw->wiphy->n_cipher_suites++;
480 }
481
482 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
483 hw->wiphy->features |=
484 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
485 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
486 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
487
488 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
489 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
490 hw->chanctx_data_size = sizeof(u16);
491
492 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
493 BIT(NL80211_IFTYPE_P2P_CLIENT) |
494 BIT(NL80211_IFTYPE_AP) |
495 BIT(NL80211_IFTYPE_P2P_GO) |
496 BIT(NL80211_IFTYPE_P2P_DEVICE) |
497 BIT(NL80211_IFTYPE_ADHOC);
498
499 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
500 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
501 if (iwl_mvm_is_lar_supported(mvm))
502 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
503 else
504 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
505 REGULATORY_DISABLE_BEACON_HINTS;
506
507 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
508 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
509
510 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
511
512 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
513 hw->wiphy->n_iface_combinations =
514 ARRAY_SIZE(iwl_mvm_iface_combinations);
515
516 hw->wiphy->max_remain_on_channel_duration = 10000;
517 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
518 /* we can compensate an offset of up to 3 channels = 15 MHz */
519 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
520
521 /* Extract MAC address */
522 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
523 hw->wiphy->addresses = mvm->addresses;
524 hw->wiphy->n_addresses = 1;
525
526 /* Extract additional MAC addresses if available */
527 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
528 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
529
530 for (i = 1; i < num_mac; i++) {
531 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
532 ETH_ALEN);
533 mvm->addresses[i].addr[5]++;
534 hw->wiphy->n_addresses++;
535 }
536
537 iwl_mvm_reset_phy_ctxts(mvm);
538
539 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
540
541 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
542
543 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
544 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
545 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
546
547 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
548 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
549 else
550 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
551
552 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
553 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
554 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
555 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
556 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
557 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
558
559 if (fw_has_capa(&mvm->fw->ucode_capa,
560 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
561 fw_has_api(&mvm->fw->ucode_capa,
562 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
563 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
564 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
565 }
566
567 hw->wiphy->hw_version = mvm->trans->hw_id;
568
569 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
570 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
571 else
572 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
573
574 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
575 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
576 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
577 /* we create the 802.11 header and zero length SSID IE. */
578 hw->wiphy->max_sched_scan_ie_len =
579 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
580 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
581 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
582
583 /*
584 * the firmware uses u8 for num of iterations, but 0xff is saved for
585 * infinite loop, so the maximum number of iterations is actually 254.
586 */
587 hw->wiphy->max_sched_scan_plan_iterations = 254;
588
589 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
590 NL80211_FEATURE_LOW_PRIORITY_SCAN |
591 NL80211_FEATURE_P2P_GO_OPPPS |
592 NL80211_FEATURE_DYNAMIC_SMPS |
593 NL80211_FEATURE_STATIC_SMPS |
594 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
595
596 if (fw_has_capa(&mvm->fw->ucode_capa,
597 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
598 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
599 if (fw_has_capa(&mvm->fw->ucode_capa,
600 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
601 hw->wiphy->features |= NL80211_FEATURE_QUIET;
602
603 if (fw_has_capa(&mvm->fw->ucode_capa,
604 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
605 hw->wiphy->features |=
606 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
607
608 if (fw_has_capa(&mvm->fw->ucode_capa,
609 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
610 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
611
612 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
613
614 #ifdef CONFIG_PM_SLEEP
615 if (iwl_mvm_is_d0i3_supported(mvm) &&
616 device_can_wakeup(mvm->trans->dev)) {
617 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
618 hw->wiphy->wowlan = &mvm->wowlan;
619 }
620
621 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
622 mvm->trans->ops->d3_suspend &&
623 mvm->trans->ops->d3_resume &&
624 device_can_wakeup(mvm->trans->dev)) {
625 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
626 WIPHY_WOWLAN_DISCONNECT |
627 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
628 WIPHY_WOWLAN_RFKILL_RELEASE |
629 WIPHY_WOWLAN_NET_DETECT;
630 if (!iwlwifi_mod_params.sw_crypto)
631 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
632 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
633 WIPHY_WOWLAN_4WAY_HANDSHAKE;
634
635 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
636 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
637 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
638 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
639 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
640 hw->wiphy->wowlan = &mvm->wowlan;
641 }
642 #endif
643
644 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
645 /* assign default bcast filtering configuration */
646 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
647 #endif
648
649 ret = iwl_mvm_leds_init(mvm);
650 if (ret)
651 return ret;
652
653 if (fw_has_capa(&mvm->fw->ucode_capa,
654 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
655 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
656 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
657 ieee80211_hw_set(hw, TDLS_WIDER_BW);
658 }
659
660 if (fw_has_capa(&mvm->fw->ucode_capa,
661 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
662 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
663 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
664 }
665
666 hw->netdev_features |= mvm->cfg->features;
667 if (!iwl_mvm_is_csum_supported(mvm))
668 hw->netdev_features &= ~NETIF_F_RXCSUM;
669
670 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
671 hw->netdev_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
672 NETIF_F_TSO | NETIF_F_TSO6;
673
674 ret = ieee80211_register_hw(mvm->hw);
675 if (ret)
676 iwl_mvm_leds_exit(mvm);
677
678 return ret;
679 }
680
681 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
682 struct ieee80211_sta *sta,
683 struct sk_buff *skb)
684 {
685 struct iwl_mvm_sta *mvmsta;
686 bool defer = false;
687
688 /*
689 * double check the IN_D0I3 flag both before and after
690 * taking the spinlock, in order to prevent taking
691 * the spinlock when not needed.
692 */
693 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
694 return false;
695
696 spin_lock(&mvm->d0i3_tx_lock);
697 /*
698 * testing the flag again ensures the skb dequeue
699 * loop (on d0i3 exit) hasn't run yet.
700 */
701 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
702 goto out;
703
704 mvmsta = iwl_mvm_sta_from_mac80211(sta);
705 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
706 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
707 goto out;
708
709 __skb_queue_tail(&mvm->d0i3_tx, skb);
710 ieee80211_stop_queues(mvm->hw);
711
712 /* trigger wakeup */
713 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
714 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
715
716 defer = true;
717 out:
718 spin_unlock(&mvm->d0i3_tx_lock);
719 return defer;
720 }
721
722 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
723 struct ieee80211_tx_control *control,
724 struct sk_buff *skb)
725 {
726 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
727 struct ieee80211_sta *sta = control->sta;
728 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
729 struct ieee80211_hdr *hdr = (void *)skb->data;
730
731 if (iwl_mvm_is_radio_killed(mvm)) {
732 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
733 goto drop;
734 }
735
736 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
737 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
738 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
739 goto drop;
740
741 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
742 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
743 ieee80211_is_mgmt(hdr->frame_control) &&
744 !ieee80211_is_deauth(hdr->frame_control) &&
745 !ieee80211_is_disassoc(hdr->frame_control) &&
746 !ieee80211_is_action(hdr->frame_control)))
747 sta = NULL;
748
749 if (sta) {
750 if (iwl_mvm_defer_tx(mvm, sta, skb))
751 return;
752 if (iwl_mvm_tx_skb(mvm, skb, sta))
753 goto drop;
754 return;
755 }
756
757 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
758 goto drop;
759 return;
760 drop:
761 ieee80211_free_txskb(hw, skb);
762 }
763
764 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
765 {
766 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
767 return false;
768 return true;
769 }
770
771 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
772 {
773 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
774 return false;
775 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
776 return true;
777
778 /* enabled by default */
779 return true;
780 }
781
782 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
783 do { \
784 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
785 break; \
786 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
787 } while (0)
788
789 static void
790 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
791 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
792 enum ieee80211_ampdu_mlme_action action)
793 {
794 struct iwl_fw_dbg_trigger_tlv *trig;
795 struct iwl_fw_dbg_trigger_ba *ba_trig;
796
797 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
798 return;
799
800 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
801 ba_trig = (void *)trig->data;
802
803 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
804 return;
805
806 switch (action) {
807 case IEEE80211_AMPDU_TX_OPERATIONAL: {
808 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
809 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
810
811 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
812 "TX AGG START: MAC %pM tid %d ssn %d\n",
813 sta->addr, tid, tid_data->ssn);
814 break;
815 }
816 case IEEE80211_AMPDU_TX_STOP_CONT:
817 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
818 "TX AGG STOP: MAC %pM tid %d\n",
819 sta->addr, tid);
820 break;
821 case IEEE80211_AMPDU_RX_START:
822 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
823 "RX AGG START: MAC %pM tid %d ssn %d\n",
824 sta->addr, tid, rx_ba_ssn);
825 break;
826 case IEEE80211_AMPDU_RX_STOP:
827 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
828 "RX AGG STOP: MAC %pM tid %d\n",
829 sta->addr, tid);
830 break;
831 default:
832 break;
833 }
834 }
835
836 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
837 struct ieee80211_vif *vif,
838 enum ieee80211_ampdu_mlme_action action,
839 struct ieee80211_sta *sta, u16 tid,
840 u16 *ssn, u8 buf_size, bool amsdu)
841 {
842 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
843 int ret;
844 bool tx_agg_ref = false;
845
846 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
847 sta->addr, tid, action);
848
849 if (!(mvm->nvm_data->sku_cap_11n_enable))
850 return -EACCES;
851
852 /* return from D0i3 before starting a new Tx aggregation */
853 switch (action) {
854 case IEEE80211_AMPDU_TX_START:
855 case IEEE80211_AMPDU_TX_STOP_CONT:
856 case IEEE80211_AMPDU_TX_STOP_FLUSH:
857 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
858 case IEEE80211_AMPDU_TX_OPERATIONAL:
859 /*
860 * for tx start, wait synchronously until D0i3 exit to
861 * get the correct sequence number for the tid.
862 * additionally, some other ampdu actions use direct
863 * target access, which is not handled automatically
864 * by the trans layer (unlike commands), so wait for
865 * d0i3 exit in these cases as well.
866 */
867 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
868 if (ret)
869 return ret;
870
871 tx_agg_ref = true;
872 break;
873 default:
874 break;
875 }
876
877 mutex_lock(&mvm->mutex);
878
879 switch (action) {
880 case IEEE80211_AMPDU_RX_START:
881 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
882 ret = -EINVAL;
883 break;
884 }
885 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
886 break;
887 case IEEE80211_AMPDU_RX_STOP:
888 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
889 break;
890 case IEEE80211_AMPDU_TX_START:
891 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
892 ret = -EINVAL;
893 break;
894 }
895 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
896 break;
897 case IEEE80211_AMPDU_TX_STOP_CONT:
898 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
899 break;
900 case IEEE80211_AMPDU_TX_STOP_FLUSH:
901 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
902 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
903 break;
904 case IEEE80211_AMPDU_TX_OPERATIONAL:
905 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
906 break;
907 default:
908 WARN_ON_ONCE(1);
909 ret = -EINVAL;
910 break;
911 }
912
913 if (!ret) {
914 u16 rx_ba_ssn = 0;
915
916 if (action == IEEE80211_AMPDU_RX_START)
917 rx_ba_ssn = *ssn;
918
919 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
920 rx_ba_ssn, action);
921 }
922 mutex_unlock(&mvm->mutex);
923
924 /*
925 * If the tid is marked as started, we won't use it for offloaded
926 * traffic on the next D0i3 entry. It's safe to unref.
927 */
928 if (tx_agg_ref)
929 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
930
931 return ret;
932 }
933
934 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
935 struct ieee80211_vif *vif)
936 {
937 struct iwl_mvm *mvm = data;
938 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
939
940 mvmvif->uploaded = false;
941 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
942
943 spin_lock_bh(&mvm->time_event_lock);
944 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
945 spin_unlock_bh(&mvm->time_event_lock);
946
947 mvmvif->phy_ctxt = NULL;
948 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
949 }
950
951 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
952 {
953 /* clear the D3 reconfig, we only need it to avoid dumping a
954 * firmware coredump on reconfiguration, we shouldn't do that
955 * on D3->D0 transition
956 */
957 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
958 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
959 iwl_mvm_fw_error_dump(mvm);
960 }
961
962 /* cleanup all stale references (scan, roc), but keep the
963 * ucode_down ref until reconfig is complete
964 */
965 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
966
967 iwl_trans_stop_device(mvm->trans);
968
969 mvm->scan_status = 0;
970 mvm->ps_disabled = false;
971 mvm->calibrating = false;
972
973 /* just in case one was running */
974 iwl_mvm_cleanup_roc_te(mvm);
975 ieee80211_remain_on_channel_expired(mvm->hw);
976
977 /*
978 * cleanup all interfaces, even inactive ones, as some might have
979 * gone down during the HW restart
980 */
981 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
982
983 mvm->p2p_device_vif = NULL;
984 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
985
986 iwl_mvm_reset_phy_ctxts(mvm);
987 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
988 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
989 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
990 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
991 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
992 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
993 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
994 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
995
996 ieee80211_wake_queues(mvm->hw);
997
998 /* clear any stale d0i3 state */
999 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1000
1001 mvm->vif_count = 0;
1002 mvm->rx_ba_sessions = 0;
1003 mvm->fw_dbg_conf = FW_DBG_INVALID;
1004 mvm->scan_type = IWL_SCAN_TYPE_NOT_SET;
1005
1006 /* keep statistics ticking */
1007 iwl_mvm_accu_radio_stats(mvm);
1008 }
1009
1010 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1011 {
1012 int ret;
1013
1014 lockdep_assert_held(&mvm->mutex);
1015
1016 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1017 /* Clean up some internal and mac80211 state on restart */
1018 iwl_mvm_restart_cleanup(mvm);
1019 } else {
1020 /* Hold the reference to prevent runtime suspend while
1021 * the start procedure runs. It's a bit confusing
1022 * that the UCODE_DOWN reference is taken, but it just
1023 * means "UCODE is not UP yet". ( TODO: rename this
1024 * reference).
1025 */
1026 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1027 }
1028 ret = iwl_mvm_up(mvm);
1029
1030 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1031 /* Something went wrong - we need to finish some cleanup
1032 * that normally iwl_mvm_mac_restart_complete() below
1033 * would do.
1034 */
1035 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1036 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1037 }
1038
1039 return ret;
1040 }
1041
1042 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1043 {
1044 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1045 int ret;
1046
1047 /* Some hw restart cleanups must not hold the mutex */
1048 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1049 /*
1050 * Make sure we are out of d0i3. This is needed
1051 * to make sure the reference accounting is correct
1052 * (and there is no stale d0i3_exit_work).
1053 */
1054 wait_event_timeout(mvm->d0i3_exit_waitq,
1055 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1056 &mvm->status),
1057 HZ);
1058 }
1059
1060 mutex_lock(&mvm->mutex);
1061 ret = __iwl_mvm_mac_start(mvm);
1062 mutex_unlock(&mvm->mutex);
1063
1064 return ret;
1065 }
1066
1067 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1068 {
1069 int ret;
1070
1071 mutex_lock(&mvm->mutex);
1072
1073 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1074 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1075 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1076 if (ret)
1077 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1078 ret);
1079
1080 /* allow transport/FW low power modes */
1081 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1082
1083 /*
1084 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1085 * of packets the FW sent out, so we must reconnect.
1086 */
1087 iwl_mvm_teardown_tdls_peers(mvm);
1088
1089 mutex_unlock(&mvm->mutex);
1090 }
1091
1092 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1093 {
1094 if (iwl_mvm_is_d0i3_supported(mvm) &&
1095 iwl_mvm_enter_d0i3_on_suspend(mvm))
1096 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1097 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1098 &mvm->status),
1099 HZ),
1100 "D0i3 exit on resume timed out\n");
1101 }
1102
1103 static void
1104 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1105 enum ieee80211_reconfig_type reconfig_type)
1106 {
1107 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1108
1109 switch (reconfig_type) {
1110 case IEEE80211_RECONFIG_TYPE_RESTART:
1111 iwl_mvm_restart_complete(mvm);
1112 break;
1113 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1114 iwl_mvm_resume_complete(mvm);
1115 break;
1116 }
1117 }
1118
1119 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1120 {
1121 lockdep_assert_held(&mvm->mutex);
1122
1123 /* firmware counters are obviously reset now, but we shouldn't
1124 * partially track so also clear the fw_reset_accu counters.
1125 */
1126 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1127
1128 /* async_handlers_wk is now blocked */
1129
1130 /*
1131 * The work item could be running or queued if the
1132 * ROC time event stops just as we get here.
1133 */
1134 flush_work(&mvm->roc_done_wk);
1135
1136 iwl_trans_stop_device(mvm->trans);
1137
1138 iwl_mvm_async_handlers_purge(mvm);
1139 /* async_handlers_list is empty and will stay empty: HW is stopped */
1140
1141 /* the fw is stopped, the aux sta is dead: clean up driver state */
1142 iwl_mvm_del_aux_sta(mvm);
1143
1144 /*
1145 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1146 * won't be called in this case).
1147 * But make sure to cleanup interfaces that have gone down before/during
1148 * HW restart was requested.
1149 */
1150 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1151 ieee80211_iterate_interfaces(mvm->hw, 0,
1152 iwl_mvm_cleanup_iterator, mvm);
1153
1154 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1155 * make sure there's nothing left there and warn if any is found.
1156 */
1157 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1158 int i;
1159
1160 for (i = 0; i < mvm->max_scans; i++) {
1161 if (WARN_ONCE(mvm->scan_uid_status[i],
1162 "UMAC scan UID %d status was not cleaned\n",
1163 i))
1164 mvm->scan_uid_status[i] = 0;
1165 }
1166 }
1167
1168 mvm->ucode_loaded = false;
1169 }
1170
1171 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1172 {
1173 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1174
1175 flush_work(&mvm->d0i3_exit_work);
1176 flush_work(&mvm->async_handlers_wk);
1177 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1178 iwl_mvm_free_fw_dump_desc(mvm);
1179
1180 mutex_lock(&mvm->mutex);
1181 __iwl_mvm_mac_stop(mvm);
1182 mutex_unlock(&mvm->mutex);
1183
1184 /*
1185 * The worker might have been waiting for the mutex, let it run and
1186 * discover that its list is now empty.
1187 */
1188 cancel_work_sync(&mvm->async_handlers_wk);
1189 }
1190
1191 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1192 {
1193 u16 i;
1194
1195 lockdep_assert_held(&mvm->mutex);
1196
1197 for (i = 0; i < NUM_PHY_CTX; i++)
1198 if (!mvm->phy_ctxts[i].ref)
1199 return &mvm->phy_ctxts[i];
1200
1201 IWL_ERR(mvm, "No available PHY context\n");
1202 return NULL;
1203 }
1204
1205 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1206 s16 tx_power)
1207 {
1208 struct iwl_dev_tx_power_cmd cmd = {
1209 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1210 .v2.mac_context_id =
1211 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1212 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1213 };
1214 int len = sizeof(cmd);
1215
1216 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1217 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1218
1219 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1220 len = sizeof(cmd.v2);
1221
1222 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1223 }
1224
1225 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1226 struct ieee80211_vif *vif)
1227 {
1228 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1229 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1230 int ret;
1231
1232 mvmvif->mvm = mvm;
1233
1234 /*
1235 * make sure D0i3 exit is completed, otherwise a target access
1236 * during tx queue configuration could be done when still in
1237 * D0i3 state.
1238 */
1239 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1240 if (ret)
1241 return ret;
1242
1243 /*
1244 * Not much to do here. The stack will not allow interface
1245 * types or combinations that we didn't advertise, so we
1246 * don't really have to check the types.
1247 */
1248
1249 mutex_lock(&mvm->mutex);
1250
1251 /* make sure that beacon statistics don't go backwards with FW reset */
1252 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1253 mvmvif->beacon_stats.accu_num_beacons +=
1254 mvmvif->beacon_stats.num_beacons;
1255
1256 /* Allocate resources for the MAC context, and add it to the fw */
1257 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1258 if (ret)
1259 goto out_unlock;
1260
1261 /* Counting number of interfaces is needed for legacy PM */
1262 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1263 mvm->vif_count++;
1264
1265 /*
1266 * The AP binding flow can be done only after the beacon
1267 * template is configured (which happens only in the mac80211
1268 * start_ap() flow), and adding the broadcast station can happen
1269 * only after the binding.
1270 * In addition, since modifying the MAC before adding a bcast
1271 * station is not allowed by the FW, delay the adding of MAC context to
1272 * the point where we can also add the bcast station.
1273 * In short: there's not much we can do at this point, other than
1274 * allocating resources :)
1275 */
1276 if (vif->type == NL80211_IFTYPE_AP ||
1277 vif->type == NL80211_IFTYPE_ADHOC) {
1278 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1279 if (ret) {
1280 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1281 goto out_release;
1282 }
1283
1284 iwl_mvm_vif_dbgfs_register(mvm, vif);
1285 goto out_unlock;
1286 }
1287
1288 mvmvif->features |= hw->netdev_features;
1289
1290 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1291 if (ret)
1292 goto out_release;
1293
1294 ret = iwl_mvm_power_update_mac(mvm);
1295 if (ret)
1296 goto out_remove_mac;
1297
1298 /* beacon filtering */
1299 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1300 if (ret)
1301 goto out_remove_mac;
1302
1303 if (!mvm->bf_allowed_vif &&
1304 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1305 mvm->bf_allowed_vif = mvmvif;
1306 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1307 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1308 }
1309
1310 /*
1311 * P2P_DEVICE interface does not have a channel context assigned to it,
1312 * so a dedicated PHY context is allocated to it and the corresponding
1313 * MAC context is bound to it at this stage.
1314 */
1315 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1316
1317 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1318 if (!mvmvif->phy_ctxt) {
1319 ret = -ENOSPC;
1320 goto out_free_bf;
1321 }
1322
1323 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1324 ret = iwl_mvm_binding_add_vif(mvm, vif);
1325 if (ret)
1326 goto out_unref_phy;
1327
1328 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1329 if (ret)
1330 goto out_unbind;
1331
1332 /* Save a pointer to p2p device vif, so it can later be used to
1333 * update the p2p device MAC when a GO is started/stopped */
1334 mvm->p2p_device_vif = vif;
1335 }
1336
1337 iwl_mvm_vif_dbgfs_register(mvm, vif);
1338 goto out_unlock;
1339
1340 out_unbind:
1341 iwl_mvm_binding_remove_vif(mvm, vif);
1342 out_unref_phy:
1343 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1344 out_free_bf:
1345 if (mvm->bf_allowed_vif == mvmvif) {
1346 mvm->bf_allowed_vif = NULL;
1347 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1348 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1349 }
1350 out_remove_mac:
1351 mvmvif->phy_ctxt = NULL;
1352 iwl_mvm_mac_ctxt_remove(mvm, vif);
1353 out_release:
1354 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1355 mvm->vif_count--;
1356
1357 iwl_mvm_mac_ctxt_release(mvm, vif);
1358 out_unlock:
1359 mutex_unlock(&mvm->mutex);
1360
1361 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1362
1363 return ret;
1364 }
1365
1366 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1367 struct ieee80211_vif *vif)
1368 {
1369 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1370
1371 if (tfd_msk) {
1372 /*
1373 * mac80211 first removes all the stations of the vif and
1374 * then removes the vif. When it removes a station it also
1375 * flushes the AMPDU session. So by now, all the AMPDU sessions
1376 * of all the stations of this vif are closed, and the queues
1377 * of these AMPDU sessions are properly closed.
1378 * We still need to take care of the shared queues of the vif.
1379 * Flush them here.
1380 */
1381 mutex_lock(&mvm->mutex);
1382 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1383 mutex_unlock(&mvm->mutex);
1384
1385 /*
1386 * There are transports that buffer a few frames in the host.
1387 * For these, the flush above isn't enough since while we were
1388 * flushing, the transport might have sent more frames to the
1389 * device. To solve this, wait here until the transport is
1390 * empty. Technically, this could have replaced the flush
1391 * above, but flush is much faster than draining. So flush
1392 * first, and drain to make sure we have no frames in the
1393 * transport anymore.
1394 * If a station still had frames on the shared queues, it is
1395 * already marked as draining, so to complete the draining, we
1396 * just need to wait until the transport is empty.
1397 */
1398 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1399 }
1400
1401 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1402 /*
1403 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1404 * We assume here that all the packets sent to the OFFCHANNEL
1405 * queue are sent in ROC session.
1406 */
1407 flush_work(&mvm->roc_done_wk);
1408 } else {
1409 /*
1410 * By now, all the AC queues are empty. The AGG queues are
1411 * empty too. We already got all the Tx responses for all the
1412 * packets in the queues. The drain work can have been
1413 * triggered. Flush it.
1414 */
1415 flush_work(&mvm->sta_drained_wk);
1416 }
1417 }
1418
1419 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1420 struct ieee80211_vif *vif)
1421 {
1422 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1423 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1424
1425 iwl_mvm_prepare_mac_removal(mvm, vif);
1426
1427 mutex_lock(&mvm->mutex);
1428
1429 if (mvm->bf_allowed_vif == mvmvif) {
1430 mvm->bf_allowed_vif = NULL;
1431 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1432 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1433 }
1434
1435 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1436
1437 /*
1438 * For AP/GO interface, the tear down of the resources allocated to the
1439 * interface is be handled as part of the stop_ap flow.
1440 */
1441 if (vif->type == NL80211_IFTYPE_AP ||
1442 vif->type == NL80211_IFTYPE_ADHOC) {
1443 #ifdef CONFIG_NL80211_TESTMODE
1444 if (vif == mvm->noa_vif) {
1445 mvm->noa_vif = NULL;
1446 mvm->noa_duration = 0;
1447 }
1448 #endif
1449 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1450 goto out_release;
1451 }
1452
1453 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1454 mvm->p2p_device_vif = NULL;
1455 iwl_mvm_rm_bcast_sta(mvm, vif);
1456 iwl_mvm_binding_remove_vif(mvm, vif);
1457 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1458 mvmvif->phy_ctxt = NULL;
1459 }
1460
1461 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1462 mvm->vif_count--;
1463
1464 iwl_mvm_power_update_mac(mvm);
1465 iwl_mvm_mac_ctxt_remove(mvm, vif);
1466
1467 out_release:
1468 iwl_mvm_mac_ctxt_release(mvm, vif);
1469 mutex_unlock(&mvm->mutex);
1470 }
1471
1472 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1473 {
1474 return 0;
1475 }
1476
1477 struct iwl_mvm_mc_iter_data {
1478 struct iwl_mvm *mvm;
1479 int port_id;
1480 };
1481
1482 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1483 struct ieee80211_vif *vif)
1484 {
1485 struct iwl_mvm_mc_iter_data *data = _data;
1486 struct iwl_mvm *mvm = data->mvm;
1487 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1488 int ret, len;
1489
1490 /* if we don't have free ports, mcast frames will be dropped */
1491 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1492 return;
1493
1494 if (vif->type != NL80211_IFTYPE_STATION ||
1495 !vif->bss_conf.assoc)
1496 return;
1497
1498 cmd->port_id = data->port_id++;
1499 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1500 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1501
1502 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1503 if (ret)
1504 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1505 }
1506
1507 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1508 {
1509 struct iwl_mvm_mc_iter_data iter_data = {
1510 .mvm = mvm,
1511 };
1512
1513 lockdep_assert_held(&mvm->mutex);
1514
1515 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1516 return;
1517
1518 ieee80211_iterate_active_interfaces_atomic(
1519 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1520 iwl_mvm_mc_iface_iterator, &iter_data);
1521 }
1522
1523 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1524 struct netdev_hw_addr_list *mc_list)
1525 {
1526 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1527 struct iwl_mcast_filter_cmd *cmd;
1528 struct netdev_hw_addr *addr;
1529 int addr_count;
1530 bool pass_all;
1531 int len;
1532
1533 addr_count = netdev_hw_addr_list_count(mc_list);
1534 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1535 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1536 if (pass_all)
1537 addr_count = 0;
1538
1539 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1540 cmd = kzalloc(len, GFP_ATOMIC);
1541 if (!cmd)
1542 return 0;
1543
1544 if (pass_all) {
1545 cmd->pass_all = 1;
1546 return (u64)(unsigned long)cmd;
1547 }
1548
1549 netdev_hw_addr_list_for_each(addr, mc_list) {
1550 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1551 cmd->count, addr->addr);
1552 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1553 addr->addr, ETH_ALEN);
1554 cmd->count++;
1555 }
1556
1557 return (u64)(unsigned long)cmd;
1558 }
1559
1560 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1561 unsigned int changed_flags,
1562 unsigned int *total_flags,
1563 u64 multicast)
1564 {
1565 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1566 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1567
1568 mutex_lock(&mvm->mutex);
1569
1570 /* replace previous configuration */
1571 kfree(mvm->mcast_filter_cmd);
1572 mvm->mcast_filter_cmd = cmd;
1573
1574 if (!cmd)
1575 goto out;
1576
1577 iwl_mvm_recalc_multicast(mvm);
1578 out:
1579 mutex_unlock(&mvm->mutex);
1580 *total_flags = 0;
1581 }
1582
1583 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1584 struct ieee80211_vif *vif,
1585 unsigned int filter_flags,
1586 unsigned int changed_flags)
1587 {
1588 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1589
1590 /* We support only filter for probe requests */
1591 if (!(changed_flags & FIF_PROBE_REQ))
1592 return;
1593
1594 /* Supported only for p2p client interfaces */
1595 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1596 !vif->p2p)
1597 return;
1598
1599 mutex_lock(&mvm->mutex);
1600 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1601 mutex_unlock(&mvm->mutex);
1602 }
1603
1604 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1605 struct iwl_bcast_iter_data {
1606 struct iwl_mvm *mvm;
1607 struct iwl_bcast_filter_cmd *cmd;
1608 u8 current_filter;
1609 };
1610
1611 static void
1612 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1613 const struct iwl_fw_bcast_filter *in_filter,
1614 struct iwl_fw_bcast_filter *out_filter)
1615 {
1616 struct iwl_fw_bcast_filter_attr *attr;
1617 int i;
1618
1619 memcpy(out_filter, in_filter, sizeof(*out_filter));
1620
1621 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1622 attr = &out_filter->attrs[i];
1623
1624 if (!attr->mask)
1625 break;
1626
1627 switch (attr->reserved1) {
1628 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1629 if (vif->bss_conf.arp_addr_cnt != 1) {
1630 attr->mask = 0;
1631 continue;
1632 }
1633
1634 attr->val = vif->bss_conf.arp_addr_list[0];
1635 break;
1636 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1637 attr->val = *(__be32 *)&vif->addr[2];
1638 break;
1639 default:
1640 break;
1641 }
1642 attr->reserved1 = 0;
1643 out_filter->num_attrs++;
1644 }
1645 }
1646
1647 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1648 struct ieee80211_vif *vif)
1649 {
1650 struct iwl_bcast_iter_data *data = _data;
1651 struct iwl_mvm *mvm = data->mvm;
1652 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1653 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1654 struct iwl_fw_bcast_mac *bcast_mac;
1655 int i;
1656
1657 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1658 return;
1659
1660 bcast_mac = &cmd->macs[mvmvif->id];
1661
1662 /*
1663 * enable filtering only for associated stations, but not for P2P
1664 * Clients
1665 */
1666 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1667 !vif->bss_conf.assoc)
1668 return;
1669
1670 bcast_mac->default_discard = 1;
1671
1672 /* copy all configured filters */
1673 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1674 /*
1675 * Make sure we don't exceed our filters limit.
1676 * if there is still a valid filter to be configured,
1677 * be on the safe side and just allow bcast for this mac.
1678 */
1679 if (WARN_ON_ONCE(data->current_filter >=
1680 ARRAY_SIZE(cmd->filters))) {
1681 bcast_mac->default_discard = 0;
1682 bcast_mac->attached_filters = 0;
1683 break;
1684 }
1685
1686 iwl_mvm_set_bcast_filter(vif,
1687 &mvm->bcast_filters[i],
1688 &cmd->filters[data->current_filter]);
1689
1690 /* skip current filter if it contains no attributes */
1691 if (!cmd->filters[data->current_filter].num_attrs)
1692 continue;
1693
1694 /* attach the filter to current mac */
1695 bcast_mac->attached_filters |=
1696 cpu_to_le16(BIT(data->current_filter));
1697
1698 data->current_filter++;
1699 }
1700 }
1701
1702 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1703 struct iwl_bcast_filter_cmd *cmd)
1704 {
1705 struct iwl_bcast_iter_data iter_data = {
1706 .mvm = mvm,
1707 .cmd = cmd,
1708 };
1709
1710 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1711 return false;
1712
1713 memset(cmd, 0, sizeof(*cmd));
1714 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1715 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1716
1717 #ifdef CONFIG_IWLWIFI_DEBUGFS
1718 /* use debugfs filters/macs if override is configured */
1719 if (mvm->dbgfs_bcast_filtering.override) {
1720 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1721 sizeof(cmd->filters));
1722 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1723 sizeof(cmd->macs));
1724 return true;
1725 }
1726 #endif
1727
1728 /* if no filters are configured, do nothing */
1729 if (!mvm->bcast_filters)
1730 return false;
1731
1732 /* configure and attach these filters for each associated sta vif */
1733 ieee80211_iterate_active_interfaces(
1734 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1735 iwl_mvm_bcast_filter_iterator, &iter_data);
1736
1737 return true;
1738 }
1739
1740 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1741 {
1742 struct iwl_bcast_filter_cmd cmd;
1743
1744 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1745 return 0;
1746
1747 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1748 return 0;
1749
1750 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1751 sizeof(cmd), &cmd);
1752 }
1753 #else
1754 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1755 {
1756 return 0;
1757 }
1758 #endif
1759
1760 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1761 struct ieee80211_vif *vif,
1762 struct ieee80211_bss_conf *bss_conf,
1763 u32 changes)
1764 {
1765 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1766 int ret;
1767
1768 /*
1769 * Re-calculate the tsf id, as the master-slave relations depend on the
1770 * beacon interval, which was not known when the station interface was
1771 * added.
1772 */
1773 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1774 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1775
1776 /*
1777 * If we're not associated yet, take the (new) BSSID before associating
1778 * so the firmware knows. If we're already associated, then use the old
1779 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1780 * branch for disassociation below.
1781 */
1782 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1783 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1784
1785 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1786 if (ret)
1787 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1788
1789 /* after sending it once, adopt mac80211 data */
1790 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1791 mvmvif->associated = bss_conf->assoc;
1792
1793 if (changes & BSS_CHANGED_ASSOC) {
1794 if (bss_conf->assoc) {
1795 /* clear statistics to get clean beacon counter */
1796 iwl_mvm_request_statistics(mvm, true);
1797 memset(&mvmvif->beacon_stats, 0,
1798 sizeof(mvmvif->beacon_stats));
1799
1800 /* add quota for this interface */
1801 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1802 if (ret) {
1803 IWL_ERR(mvm, "failed to update quotas\n");
1804 return;
1805 }
1806
1807 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1808 &mvm->status)) {
1809 /*
1810 * If we're restarting then the firmware will
1811 * obviously have lost synchronisation with
1812 * the AP. It will attempt to synchronise by
1813 * itself, but we can make it more reliable by
1814 * scheduling a session protection time event.
1815 *
1816 * The firmware needs to receive a beacon to
1817 * catch up with synchronisation, use 110% of
1818 * the beacon interval.
1819 *
1820 * Set a large maximum delay to allow for more
1821 * than a single interface.
1822 */
1823 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1824 iwl_mvm_protect_session(mvm, vif, dur, dur,
1825 5 * dur, false);
1826 }
1827
1828 iwl_mvm_sf_update(mvm, vif, false);
1829 iwl_mvm_power_vif_assoc(mvm, vif);
1830 if (vif->p2p) {
1831 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1832 iwl_mvm_update_smps(mvm, vif,
1833 IWL_MVM_SMPS_REQ_PROT,
1834 IEEE80211_SMPS_DYNAMIC);
1835 }
1836 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1837 /*
1838 * If update fails - SF might be running in associated
1839 * mode while disassociated - which is forbidden.
1840 */
1841 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1842 "Failed to update SF upon disassociation\n");
1843
1844 /* remove AP station now that the MAC is unassoc */
1845 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1846 if (ret)
1847 IWL_ERR(mvm, "failed to remove AP station\n");
1848
1849 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1850 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1851 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1852 /* remove quota for this interface */
1853 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1854 if (ret)
1855 IWL_ERR(mvm, "failed to update quotas\n");
1856
1857 if (vif->p2p)
1858 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1859
1860 /* this will take the cleared BSSID from bss_conf */
1861 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1862 if (ret)
1863 IWL_ERR(mvm,
1864 "failed to update MAC %pM (clear after unassoc)\n",
1865 vif->addr);
1866 }
1867
1868 iwl_mvm_recalc_multicast(mvm);
1869 iwl_mvm_configure_bcast_filter(mvm);
1870
1871 /* reset rssi values */
1872 mvmvif->bf_data.ave_beacon_signal = 0;
1873
1874 iwl_mvm_bt_coex_vif_change(mvm);
1875 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1876 IEEE80211_SMPS_AUTOMATIC);
1877 if (fw_has_capa(&mvm->fw->ucode_capa,
1878 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1879 iwl_mvm_config_scan(mvm);
1880 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1881 /*
1882 * We received a beacon _after_ association so
1883 * remove the session protection.
1884 */
1885 iwl_mvm_remove_time_event(mvm, mvmvif,
1886 &mvmvif->time_event_data);
1887 }
1888
1889 if (changes & BSS_CHANGED_BEACON_INFO) {
1890 iwl_mvm_sf_update(mvm, vif, false);
1891 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1892 }
1893
1894 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1895 ret = iwl_mvm_power_update_mac(mvm);
1896 if (ret)
1897 IWL_ERR(mvm, "failed to update power mode\n");
1898 }
1899
1900 if (changes & BSS_CHANGED_TXPOWER) {
1901 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1902 bss_conf->txpower);
1903 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1904 }
1905
1906 if (changes & BSS_CHANGED_CQM) {
1907 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1908 /* reset cqm events tracking */
1909 mvmvif->bf_data.last_cqm_event = 0;
1910 if (mvmvif->bf_data.bf_enabled) {
1911 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1912 if (ret)
1913 IWL_ERR(mvm,
1914 "failed to update CQM thresholds\n");
1915 }
1916 }
1917
1918 if (changes & BSS_CHANGED_ARP_FILTER) {
1919 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1920 iwl_mvm_configure_bcast_filter(mvm);
1921 }
1922 }
1923
1924 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1925 struct ieee80211_vif *vif)
1926 {
1927 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1928 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1929 int ret;
1930
1931 /*
1932 * iwl_mvm_mac_ctxt_add() might read directly from the device
1933 * (the system time), so make sure it is available.
1934 */
1935 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1936 if (ret)
1937 return ret;
1938
1939 mutex_lock(&mvm->mutex);
1940
1941 /* Send the beacon template */
1942 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1943 if (ret)
1944 goto out_unlock;
1945
1946 /*
1947 * Re-calculate the tsf id, as the master-slave relations depend on the
1948 * beacon interval, which was not known when the AP interface was added.
1949 */
1950 if (vif->type == NL80211_IFTYPE_AP)
1951 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1952
1953 mvmvif->ap_assoc_sta_count = 0;
1954
1955 /* Add the mac context */
1956 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1957 if (ret)
1958 goto out_unlock;
1959
1960 /* Perform the binding */
1961 ret = iwl_mvm_binding_add_vif(mvm, vif);
1962 if (ret)
1963 goto out_remove;
1964
1965 /* Send the bcast station. At this stage the TBTT and DTIM time events
1966 * are added and applied to the scheduler */
1967 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1968 if (ret)
1969 goto out_unbind;
1970
1971 /* must be set before quota calculations */
1972 mvmvif->ap_ibss_active = true;
1973
1974 /* power updated needs to be done before quotas */
1975 iwl_mvm_power_update_mac(mvm);
1976
1977 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1978 if (ret)
1979 goto out_quota_failed;
1980
1981 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1982 if (vif->p2p && mvm->p2p_device_vif)
1983 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1984
1985 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1986
1987 iwl_mvm_bt_coex_vif_change(mvm);
1988
1989 /* we don't support TDLS during DCM */
1990 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1991 iwl_mvm_teardown_tdls_peers(mvm);
1992
1993 goto out_unlock;
1994
1995 out_quota_failed:
1996 iwl_mvm_power_update_mac(mvm);
1997 mvmvif->ap_ibss_active = false;
1998 iwl_mvm_send_rm_bcast_sta(mvm, vif);
1999 out_unbind:
2000 iwl_mvm_binding_remove_vif(mvm, vif);
2001 out_remove:
2002 iwl_mvm_mac_ctxt_remove(mvm, vif);
2003 out_unlock:
2004 mutex_unlock(&mvm->mutex);
2005 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2006 return ret;
2007 }
2008
2009 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2010 struct ieee80211_vif *vif)
2011 {
2012 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2013 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2014
2015 iwl_mvm_prepare_mac_removal(mvm, vif);
2016
2017 mutex_lock(&mvm->mutex);
2018
2019 /* Handle AP stop while in CSA */
2020 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2021 iwl_mvm_remove_time_event(mvm, mvmvif,
2022 &mvmvif->time_event_data);
2023 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2024 mvmvif->csa_countdown = false;
2025 }
2026
2027 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2028 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2029 mvm->csa_tx_block_bcn_timeout = 0;
2030 }
2031
2032 mvmvif->ap_ibss_active = false;
2033 mvm->ap_last_beacon_gp2 = 0;
2034
2035 iwl_mvm_bt_coex_vif_change(mvm);
2036
2037 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2038
2039 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2040 if (vif->p2p && mvm->p2p_device_vif)
2041 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2042
2043 iwl_mvm_update_quotas(mvm, false, NULL);
2044 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2045 iwl_mvm_binding_remove_vif(mvm, vif);
2046
2047 iwl_mvm_power_update_mac(mvm);
2048
2049 iwl_mvm_mac_ctxt_remove(mvm, vif);
2050
2051 mutex_unlock(&mvm->mutex);
2052 }
2053
2054 static void
2055 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2056 struct ieee80211_vif *vif,
2057 struct ieee80211_bss_conf *bss_conf,
2058 u32 changes)
2059 {
2060 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2061
2062 /* Changes will be applied when the AP/IBSS is started */
2063 if (!mvmvif->ap_ibss_active)
2064 return;
2065
2066 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2067 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2068 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2069 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2070
2071 /* Need to send a new beacon template to the FW */
2072 if (changes & BSS_CHANGED_BEACON &&
2073 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2074 IWL_WARN(mvm, "Failed updating beacon data\n");
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 }
2083
2084 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2085 struct ieee80211_vif *vif,
2086 struct ieee80211_bss_conf *bss_conf,
2087 u32 changes)
2088 {
2089 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2090
2091 /*
2092 * iwl_mvm_bss_info_changed_station() might call
2093 * iwl_mvm_protect_session(), which reads directly from
2094 * the device (the system time), so make sure it is available.
2095 */
2096 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2097 return;
2098
2099 mutex_lock(&mvm->mutex);
2100
2101 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2102 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2103
2104 switch (vif->type) {
2105 case NL80211_IFTYPE_STATION:
2106 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2107 break;
2108 case NL80211_IFTYPE_AP:
2109 case NL80211_IFTYPE_ADHOC:
2110 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2111 break;
2112 default:
2113 /* shouldn't happen */
2114 WARN_ON_ONCE(1);
2115 }
2116
2117 mutex_unlock(&mvm->mutex);
2118 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2119 }
2120
2121 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2122 struct ieee80211_vif *vif,
2123 struct ieee80211_scan_request *hw_req)
2124 {
2125 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2126 int ret;
2127
2128 if (hw_req->req.n_channels == 0 ||
2129 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2130 return -EINVAL;
2131
2132 mutex_lock(&mvm->mutex);
2133 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2134 mutex_unlock(&mvm->mutex);
2135
2136 return ret;
2137 }
2138
2139 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2140 struct ieee80211_vif *vif)
2141 {
2142 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2143
2144 mutex_lock(&mvm->mutex);
2145
2146 /* Due to a race condition, it's possible that mac80211 asks
2147 * us to stop a hw_scan when it's already stopped. This can
2148 * happen, for instance, if we stopped the scan ourselves,
2149 * called ieee80211_scan_completed() and the userspace called
2150 * cancel scan scan before ieee80211_scan_work() could run.
2151 * To handle that, simply return if the scan is not running.
2152 */
2153 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2154 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2155
2156 mutex_unlock(&mvm->mutex);
2157 }
2158
2159 static void
2160 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2161 struct ieee80211_sta *sta, u16 tids,
2162 int num_frames,
2163 enum ieee80211_frame_release_type reason,
2164 bool more_data)
2165 {
2166 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2167
2168 /* Called when we need to transmit (a) frame(s) from mac80211 */
2169
2170 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2171 tids, more_data, false);
2172 }
2173
2174 static void
2175 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2176 struct ieee80211_sta *sta, u16 tids,
2177 int num_frames,
2178 enum ieee80211_frame_release_type reason,
2179 bool more_data)
2180 {
2181 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2182
2183 /* Called when we need to transmit (a) frame(s) from agg queue */
2184
2185 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2186 tids, more_data, true);
2187 }
2188
2189 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2190 struct ieee80211_vif *vif,
2191 enum sta_notify_cmd cmd,
2192 struct ieee80211_sta *sta)
2193 {
2194 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2195 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2196 unsigned long txqs = 0, tids = 0;
2197 int tid;
2198
2199 spin_lock_bh(&mvmsta->lock);
2200 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2201 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2202
2203 if (tid_data->state != IWL_AGG_ON &&
2204 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2205 continue;
2206
2207 __set_bit(tid_data->txq_id, &txqs);
2208
2209 if (iwl_mvm_tid_queued(tid_data) == 0)
2210 continue;
2211
2212 __set_bit(tid, &tids);
2213 }
2214
2215 switch (cmd) {
2216 case STA_NOTIFY_SLEEP:
2217 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2218 ieee80211_sta_block_awake(hw, sta, true);
2219
2220 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2221 ieee80211_sta_set_buffered(sta, tid, true);
2222
2223 if (txqs)
2224 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2225 /*
2226 * The fw updates the STA to be asleep. Tx packets on the Tx
2227 * queues to this station will not be transmitted. The fw will
2228 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2229 */
2230 break;
2231 case STA_NOTIFY_AWAKE:
2232 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2233 break;
2234
2235 if (txqs)
2236 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2237 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2238 break;
2239 default:
2240 break;
2241 }
2242 spin_unlock_bh(&mvmsta->lock);
2243 }
2244
2245 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2246 struct ieee80211_vif *vif,
2247 struct ieee80211_sta *sta)
2248 {
2249 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2250 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2251 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2252
2253 /*
2254 * This is called before mac80211 does RCU synchronisation,
2255 * so here we already invalidate our internal RCU-protected
2256 * station pointer. The rest of the code will thus no longer
2257 * be able to find the station this way, and we don't rely
2258 * on further RCU synchronisation after the sta_state()
2259 * callback deleted the station.
2260 */
2261 mutex_lock(&mvm->mutex);
2262 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2263 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2264 ERR_PTR(-ENOENT));
2265
2266 if (mvm_sta->vif->type == NL80211_IFTYPE_AP) {
2267 mvmvif->ap_assoc_sta_count--;
2268 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2269 }
2270
2271 mutex_unlock(&mvm->mutex);
2272 }
2273
2274 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2275 const u8 *bssid)
2276 {
2277 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2278 return;
2279
2280 if (iwlwifi_mod_params.uapsd_disable) {
2281 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2282 return;
2283 }
2284
2285 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2286 }
2287
2288 static void
2289 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2290 struct ieee80211_vif *vif, u8 *peer_addr,
2291 enum nl80211_tdls_operation action)
2292 {
2293 struct iwl_fw_dbg_trigger_tlv *trig;
2294 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2295
2296 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2297 return;
2298
2299 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2300 tdls_trig = (void *)trig->data;
2301 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2302 return;
2303
2304 if (!(tdls_trig->action_bitmap & BIT(action)))
2305 return;
2306
2307 if (tdls_trig->peer_mode &&
2308 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2309 return;
2310
2311 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2312 "TDLS event occurred, peer %pM, action %d",
2313 peer_addr, action);
2314 }
2315
2316 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2317 struct ieee80211_vif *vif,
2318 struct ieee80211_sta *sta,
2319 enum ieee80211_sta_state old_state,
2320 enum ieee80211_sta_state new_state)
2321 {
2322 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2323 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2324 int ret;
2325
2326 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2327 sta->addr, old_state, new_state);
2328
2329 /* this would be a mac80211 bug ... but don't crash */
2330 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2331 return -EINVAL;
2332
2333 /* if a STA is being removed, reuse its ID */
2334 flush_work(&mvm->sta_drained_wk);
2335
2336 mutex_lock(&mvm->mutex);
2337 if (old_state == IEEE80211_STA_NOTEXIST &&
2338 new_state == IEEE80211_STA_NONE) {
2339 /*
2340 * Firmware bug - it'll crash if the beacon interval is less
2341 * than 16. We can't avoid connecting at all, so refuse the
2342 * station state change, this will cause mac80211 to abandon
2343 * attempts to connect to this AP, and eventually wpa_s will
2344 * blacklist the AP...
2345 */
2346 if (vif->type == NL80211_IFTYPE_STATION &&
2347 vif->bss_conf.beacon_int < 16) {
2348 IWL_ERR(mvm,
2349 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2350 sta->addr, vif->bss_conf.beacon_int);
2351 ret = -EINVAL;
2352 goto out_unlock;
2353 }
2354
2355 if (sta->tdls &&
2356 (vif->p2p ||
2357 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2358 IWL_MVM_TDLS_STA_COUNT ||
2359 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2360 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2361 ret = -EBUSY;
2362 goto out_unlock;
2363 }
2364
2365 ret = iwl_mvm_add_sta(mvm, vif, sta);
2366 if (sta->tdls && ret == 0) {
2367 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2368 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2369 NL80211_TDLS_SETUP);
2370 }
2371 } else if (old_state == IEEE80211_STA_NONE &&
2372 new_state == IEEE80211_STA_AUTH) {
2373 /*
2374 * EBS may be disabled due to previous failures reported by FW.
2375 * Reset EBS status here assuming environment has been changed.
2376 */
2377 mvm->last_ebs_successful = true;
2378 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2379 ret = 0;
2380 } else if (old_state == IEEE80211_STA_AUTH &&
2381 new_state == IEEE80211_STA_ASSOC) {
2382 ret = iwl_mvm_update_sta(mvm, vif, sta);
2383 if (ret == 0)
2384 iwl_mvm_rs_rate_init(mvm, sta,
2385 mvmvif->phy_ctxt->channel->band,
2386 true);
2387 } else if (old_state == IEEE80211_STA_ASSOC &&
2388 new_state == IEEE80211_STA_AUTHORIZED) {
2389
2390 /* we don't support TDLS during DCM */
2391 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2392 iwl_mvm_teardown_tdls_peers(mvm);
2393
2394 if (sta->tdls)
2395 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2396 NL80211_TDLS_ENABLE_LINK);
2397
2398 /* enable beacon filtering */
2399 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2400 ret = 0;
2401 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2402 new_state == IEEE80211_STA_ASSOC) {
2403 /* disable beacon filtering */
2404 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2405 ret = 0;
2406 } else if (old_state == IEEE80211_STA_ASSOC &&
2407 new_state == IEEE80211_STA_AUTH) {
2408 ret = 0;
2409 } else if (old_state == IEEE80211_STA_AUTH &&
2410 new_state == IEEE80211_STA_NONE) {
2411 ret = 0;
2412 } else if (old_state == IEEE80211_STA_NONE &&
2413 new_state == IEEE80211_STA_NOTEXIST) {
2414 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2415 if (sta->tdls) {
2416 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2417 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2418 NL80211_TDLS_DISABLE_LINK);
2419 }
2420 } else {
2421 ret = -EIO;
2422 }
2423 out_unlock:
2424 mutex_unlock(&mvm->mutex);
2425
2426 if (sta->tdls && ret == 0) {
2427 if (old_state == IEEE80211_STA_NOTEXIST &&
2428 new_state == IEEE80211_STA_NONE)
2429 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2430 else if (old_state == IEEE80211_STA_NONE &&
2431 new_state == IEEE80211_STA_NOTEXIST)
2432 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2433 }
2434
2435 return ret;
2436 }
2437
2438 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2439 {
2440 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2441
2442 mvm->rts_threshold = value;
2443
2444 return 0;
2445 }
2446
2447 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2448 struct ieee80211_vif *vif,
2449 struct ieee80211_sta *sta, u32 changed)
2450 {
2451 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2452
2453 if (vif->type == NL80211_IFTYPE_STATION &&
2454 changed & IEEE80211_RC_NSS_CHANGED)
2455 iwl_mvm_sf_update(mvm, vif, false);
2456 }
2457
2458 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2459 struct ieee80211_vif *vif, u16 ac,
2460 const struct ieee80211_tx_queue_params *params)
2461 {
2462 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2463 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2464
2465 mvmvif->queue_params[ac] = *params;
2466
2467 /*
2468 * No need to update right away, we'll get BSS_CHANGED_QOS
2469 * The exception is P2P_DEVICE interface which needs immediate update.
2470 */
2471 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2472 int ret;
2473
2474 mutex_lock(&mvm->mutex);
2475 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2476 mutex_unlock(&mvm->mutex);
2477 return ret;
2478 }
2479 return 0;
2480 }
2481
2482 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2483 struct ieee80211_vif *vif)
2484 {
2485 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2486 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2487 200 + vif->bss_conf.beacon_int);
2488 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2489 100 + vif->bss_conf.beacon_int);
2490
2491 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2492 return;
2493
2494 /*
2495 * iwl_mvm_protect_session() reads directly from the device
2496 * (the system time), so make sure it is available.
2497 */
2498 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2499 return;
2500
2501 mutex_lock(&mvm->mutex);
2502 /* Try really hard to protect the session and hear a beacon */
2503 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2504 mutex_unlock(&mvm->mutex);
2505
2506 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2507 }
2508
2509 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2510 struct ieee80211_vif *vif,
2511 struct cfg80211_sched_scan_request *req,
2512 struct ieee80211_scan_ies *ies)
2513 {
2514 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2515
2516 int ret;
2517
2518 mutex_lock(&mvm->mutex);
2519
2520 if (!vif->bss_conf.idle) {
2521 ret = -EBUSY;
2522 goto out;
2523 }
2524
2525 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2526
2527 out:
2528 mutex_unlock(&mvm->mutex);
2529 return ret;
2530 }
2531
2532 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2533 struct ieee80211_vif *vif)
2534 {
2535 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2536 int ret;
2537
2538 mutex_lock(&mvm->mutex);
2539
2540 /* Due to a race condition, it's possible that mac80211 asks
2541 * us to stop a sched_scan when it's already stopped. This
2542 * can happen, for instance, if we stopped the scan ourselves,
2543 * called ieee80211_sched_scan_stopped() and the userspace called
2544 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2545 * could run. To handle this, simply return if the scan is
2546 * not running.
2547 */
2548 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2549 mutex_unlock(&mvm->mutex);
2550 return 0;
2551 }
2552
2553 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2554 mutex_unlock(&mvm->mutex);
2555 iwl_mvm_wait_for_async_handlers(mvm);
2556
2557 return ret;
2558 }
2559
2560 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2561 enum set_key_cmd cmd,
2562 struct ieee80211_vif *vif,
2563 struct ieee80211_sta *sta,
2564 struct ieee80211_key_conf *key)
2565 {
2566 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2567 int ret;
2568 u8 key_offset;
2569
2570 if (iwlwifi_mod_params.sw_crypto) {
2571 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2572 return -EOPNOTSUPP;
2573 }
2574
2575 switch (key->cipher) {
2576 case WLAN_CIPHER_SUITE_TKIP:
2577 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2578 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2579 break;
2580 case WLAN_CIPHER_SUITE_CCMP:
2581 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2582 break;
2583 case WLAN_CIPHER_SUITE_AES_CMAC:
2584 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2585 break;
2586 case WLAN_CIPHER_SUITE_WEP40:
2587 case WLAN_CIPHER_SUITE_WEP104:
2588 /* For non-client mode, only use WEP keys for TX as we probably
2589 * don't have a station yet anyway and would then have to keep
2590 * track of the keys, linking them to each of the clients/peers
2591 * as they appear. For now, don't do that, for performance WEP
2592 * offload doesn't really matter much, but we need it for some
2593 * other offload features in client mode.
2594 */
2595 if (vif->type != NL80211_IFTYPE_STATION)
2596 return 0;
2597 break;
2598 default:
2599 /* currently FW supports only one optional cipher scheme */
2600 if (hw->n_cipher_schemes &&
2601 hw->cipher_schemes->cipher == key->cipher)
2602 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2603 else
2604 return -EOPNOTSUPP;
2605 }
2606
2607 mutex_lock(&mvm->mutex);
2608
2609 switch (cmd) {
2610 case SET_KEY:
2611 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2612 vif->type == NL80211_IFTYPE_AP) && !sta) {
2613 /*
2614 * GTK on AP interface is a TX-only key, return 0;
2615 * on IBSS they're per-station and because we're lazy
2616 * we don't support them for RX, so do the same.
2617 */
2618 ret = 0;
2619 key->hw_key_idx = STA_KEY_IDX_INVALID;
2620 break;
2621 }
2622
2623 /* During FW restart, in order to restore the state as it was,
2624 * don't try to reprogram keys we previously failed for.
2625 */
2626 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2627 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2628 IWL_DEBUG_MAC80211(mvm,
2629 "skip invalid idx key programming during restart\n");
2630 ret = 0;
2631 break;
2632 }
2633
2634 /* in HW restart reuse the index, otherwise request a new one */
2635 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2636 key_offset = key->hw_key_idx;
2637 else
2638 key_offset = STA_KEY_IDX_INVALID;
2639
2640 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2641 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2642 if (ret) {
2643 IWL_WARN(mvm, "set key failed\n");
2644 /*
2645 * can't add key for RX, but we don't need it
2646 * in the device for TX so still return 0
2647 */
2648 key->hw_key_idx = STA_KEY_IDX_INVALID;
2649 ret = 0;
2650 }
2651
2652 break;
2653 case DISABLE_KEY:
2654 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2655 ret = 0;
2656 break;
2657 }
2658
2659 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2660 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2661 break;
2662 default:
2663 ret = -EINVAL;
2664 }
2665
2666 mutex_unlock(&mvm->mutex);
2667 return ret;
2668 }
2669
2670 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2671 struct ieee80211_vif *vif,
2672 struct ieee80211_key_conf *keyconf,
2673 struct ieee80211_sta *sta,
2674 u32 iv32, u16 *phase1key)
2675 {
2676 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2677
2678 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2679 return;
2680
2681 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2682 }
2683
2684
2685 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2686 struct iwl_rx_packet *pkt, void *data)
2687 {
2688 struct iwl_mvm *mvm =
2689 container_of(notif_wait, struct iwl_mvm, notif_wait);
2690 struct iwl_hs20_roc_res *resp;
2691 int resp_len = iwl_rx_packet_payload_len(pkt);
2692 struct iwl_mvm_time_event_data *te_data = data;
2693
2694 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2695 return true;
2696
2697 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2698 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2699 return true;
2700 }
2701
2702 resp = (void *)pkt->data;
2703
2704 IWL_DEBUG_TE(mvm,
2705 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2706 resp->status, resp->event_unique_id);
2707
2708 te_data->uid = le32_to_cpu(resp->event_unique_id);
2709 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2710 te_data->uid);
2711
2712 spin_lock_bh(&mvm->time_event_lock);
2713 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2714 spin_unlock_bh(&mvm->time_event_lock);
2715
2716 return true;
2717 }
2718
2719 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2720 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2721 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2722 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2723 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2724 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2725 struct ieee80211_channel *channel,
2726 struct ieee80211_vif *vif,
2727 int duration)
2728 {
2729 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2730 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2731 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2732 static const u16 time_event_response[] = { HOT_SPOT_CMD };
2733 struct iwl_notification_wait wait_time_event;
2734 u32 dtim_interval = vif->bss_conf.dtim_period *
2735 vif->bss_conf.beacon_int;
2736 u32 req_dur, delay;
2737 struct iwl_hs20_roc_req aux_roc_req = {
2738 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2739 .id_and_color =
2740 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2741 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2742 /* Set the channel info data */
2743 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2744 PHY_BAND_24 : PHY_BAND_5,
2745 .channel_info.channel = channel->hw_value,
2746 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2747 /* Set the time and duration */
2748 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2749 };
2750
2751 delay = AUX_ROC_MIN_DELAY;
2752 req_dur = MSEC_TO_TU(duration);
2753
2754 /*
2755 * If we are associated we want the delay time to be at least one
2756 * dtim interval so that the FW can wait until after the DTIM and
2757 * then start the time event, this will potentially allow us to
2758 * remain off-channel for the max duration.
2759 * Since we want to use almost a whole dtim interval we would also
2760 * like the delay to be for 2-3 dtim intervals, in case there are
2761 * other time events with higher priority.
2762 */
2763 if (vif->bss_conf.assoc) {
2764 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2765 /* We cannot remain off-channel longer than the DTIM interval */
2766 if (dtim_interval <= req_dur) {
2767 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2768 if (req_dur <= AUX_ROC_MIN_DURATION)
2769 req_dur = dtim_interval -
2770 AUX_ROC_MIN_SAFETY_BUFFER;
2771 }
2772 }
2773
2774 aux_roc_req.duration = cpu_to_le32(req_dur);
2775 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2776
2777 IWL_DEBUG_TE(mvm,
2778 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2779 channel->hw_value, req_dur, duration, delay,
2780 dtim_interval);
2781 /* Set the node address */
2782 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2783
2784 lockdep_assert_held(&mvm->mutex);
2785
2786 spin_lock_bh(&mvm->time_event_lock);
2787
2788 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2789 spin_unlock_bh(&mvm->time_event_lock);
2790 return -EIO;
2791 }
2792
2793 te_data->vif = vif;
2794 te_data->duration = duration;
2795 te_data->id = HOT_SPOT_CMD;
2796
2797 spin_unlock_bh(&mvm->time_event_lock);
2798
2799 /*
2800 * Use a notification wait, which really just processes the
2801 * command response and doesn't wait for anything, in order
2802 * to be able to process the response and get the UID inside
2803 * the RX path. Using CMD_WANT_SKB doesn't work because it
2804 * stores the buffer and then wakes up this thread, by which
2805 * time another notification (that the time event started)
2806 * might already be processed unsuccessfully.
2807 */
2808 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2809 time_event_response,
2810 ARRAY_SIZE(time_event_response),
2811 iwl_mvm_rx_aux_roc, te_data);
2812
2813 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2814 &aux_roc_req);
2815
2816 if (res) {
2817 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2818 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2819 goto out_clear_te;
2820 }
2821
2822 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2823 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2824 /* should never fail */
2825 WARN_ON_ONCE(res);
2826
2827 if (res) {
2828 out_clear_te:
2829 spin_lock_bh(&mvm->time_event_lock);
2830 iwl_mvm_te_clear_data(mvm, te_data);
2831 spin_unlock_bh(&mvm->time_event_lock);
2832 }
2833
2834 return res;
2835 }
2836
2837 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2838 struct ieee80211_vif *vif,
2839 struct ieee80211_channel *channel,
2840 int duration,
2841 enum ieee80211_roc_type type)
2842 {
2843 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2844 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2845 struct cfg80211_chan_def chandef;
2846 struct iwl_mvm_phy_ctxt *phy_ctxt;
2847 int ret, i;
2848
2849 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2850 duration, type);
2851
2852 flush_work(&mvm->roc_done_wk);
2853
2854 mutex_lock(&mvm->mutex);
2855
2856 switch (vif->type) {
2857 case NL80211_IFTYPE_STATION:
2858 if (fw_has_capa(&mvm->fw->ucode_capa,
2859 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2860 /* Use aux roc framework (HS20) */
2861 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2862 vif, duration);
2863 goto out_unlock;
2864 }
2865 IWL_ERR(mvm, "hotspot not supported\n");
2866 ret = -EINVAL;
2867 goto out_unlock;
2868 case NL80211_IFTYPE_P2P_DEVICE:
2869 /* handle below */
2870 break;
2871 default:
2872 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2873 ret = -EINVAL;
2874 goto out_unlock;
2875 }
2876
2877 for (i = 0; i < NUM_PHY_CTX; i++) {
2878 phy_ctxt = &mvm->phy_ctxts[i];
2879 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2880 continue;
2881
2882 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2883 /*
2884 * Unbind the P2P_DEVICE from the current PHY context,
2885 * and if the PHY context is not used remove it.
2886 */
2887 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2888 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2889 goto out_unlock;
2890
2891 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2892
2893 /* Bind the P2P_DEVICE to the current PHY Context */
2894 mvmvif->phy_ctxt = phy_ctxt;
2895
2896 ret = iwl_mvm_binding_add_vif(mvm, vif);
2897 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2898 goto out_unlock;
2899
2900 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2901 goto schedule_time_event;
2902 }
2903 }
2904
2905 /* Need to update the PHY context only if the ROC channel changed */
2906 if (channel == mvmvif->phy_ctxt->channel)
2907 goto schedule_time_event;
2908
2909 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2910
2911 /*
2912 * Change the PHY context configuration as it is currently referenced
2913 * only by the P2P Device MAC
2914 */
2915 if (mvmvif->phy_ctxt->ref == 1) {
2916 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2917 &chandef, 1, 1);
2918 if (ret)
2919 goto out_unlock;
2920 } else {
2921 /*
2922 * The PHY context is shared with other MACs. Need to remove the
2923 * P2P Device from the binding, allocate an new PHY context and
2924 * create a new binding
2925 */
2926 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2927 if (!phy_ctxt) {
2928 ret = -ENOSPC;
2929 goto out_unlock;
2930 }
2931
2932 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2933 1, 1);
2934 if (ret) {
2935 IWL_ERR(mvm, "Failed to change PHY context\n");
2936 goto out_unlock;
2937 }
2938
2939 /* Unbind the P2P_DEVICE from the current PHY context */
2940 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2941 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2942 goto out_unlock;
2943
2944 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2945
2946 /* Bind the P2P_DEVICE to the new allocated PHY context */
2947 mvmvif->phy_ctxt = phy_ctxt;
2948
2949 ret = iwl_mvm_binding_add_vif(mvm, vif);
2950 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2951 goto out_unlock;
2952
2953 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2954 }
2955
2956 schedule_time_event:
2957 /* Schedule the time events */
2958 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2959
2960 out_unlock:
2961 mutex_unlock(&mvm->mutex);
2962 IWL_DEBUG_MAC80211(mvm, "leave\n");
2963 return ret;
2964 }
2965
2966 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2967 {
2968 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2969
2970 IWL_DEBUG_MAC80211(mvm, "enter\n");
2971
2972 mutex_lock(&mvm->mutex);
2973 iwl_mvm_stop_roc(mvm);
2974 mutex_unlock(&mvm->mutex);
2975
2976 IWL_DEBUG_MAC80211(mvm, "leave\n");
2977 return 0;
2978 }
2979
2980 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2981 struct ieee80211_chanctx_conf *ctx)
2982 {
2983 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2984 struct iwl_mvm_phy_ctxt *phy_ctxt;
2985 int ret;
2986
2987 lockdep_assert_held(&mvm->mutex);
2988
2989 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2990
2991 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2992 if (!phy_ctxt) {
2993 ret = -ENOSPC;
2994 goto out;
2995 }
2996
2997 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2998 ctx->rx_chains_static,
2999 ctx->rx_chains_dynamic);
3000 if (ret) {
3001 IWL_ERR(mvm, "Failed to add PHY context\n");
3002 goto out;
3003 }
3004
3005 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3006 *phy_ctxt_id = phy_ctxt->id;
3007 out:
3008 return ret;
3009 }
3010
3011 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3012 struct ieee80211_chanctx_conf *ctx)
3013 {
3014 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3015 int ret;
3016
3017 mutex_lock(&mvm->mutex);
3018 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3019 mutex_unlock(&mvm->mutex);
3020
3021 return ret;
3022 }
3023
3024 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3025 struct ieee80211_chanctx_conf *ctx)
3026 {
3027 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3028 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3029
3030 lockdep_assert_held(&mvm->mutex);
3031
3032 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3033 }
3034
3035 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3036 struct ieee80211_chanctx_conf *ctx)
3037 {
3038 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3039
3040 mutex_lock(&mvm->mutex);
3041 __iwl_mvm_remove_chanctx(mvm, ctx);
3042 mutex_unlock(&mvm->mutex);
3043 }
3044
3045 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3046 struct ieee80211_chanctx_conf *ctx,
3047 u32 changed)
3048 {
3049 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3050 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3051 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3052
3053 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3054 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3055 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3056 IEEE80211_CHANCTX_CHANGE_RADAR |
3057 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3058 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3059 phy_ctxt->ref, changed))
3060 return;
3061
3062 mutex_lock(&mvm->mutex);
3063 iwl_mvm_bt_coex_vif_change(mvm);
3064 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3065 ctx->rx_chains_static,
3066 ctx->rx_chains_dynamic);
3067 mutex_unlock(&mvm->mutex);
3068 }
3069
3070 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3071 struct ieee80211_vif *vif,
3072 struct ieee80211_chanctx_conf *ctx,
3073 bool switching_chanctx)
3074 {
3075 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3076 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3077 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3078 int ret;
3079
3080 lockdep_assert_held(&mvm->mutex);
3081
3082 mvmvif->phy_ctxt = phy_ctxt;
3083
3084 switch (vif->type) {
3085 case NL80211_IFTYPE_AP:
3086 /* only needed if we're switching chanctx (i.e. during CSA) */
3087 if (switching_chanctx) {
3088 mvmvif->ap_ibss_active = true;
3089 break;
3090 }
3091 case NL80211_IFTYPE_ADHOC:
3092 /*
3093 * The AP binding flow is handled as part of the start_ap flow
3094 * (in bss_info_changed), similarly for IBSS.
3095 */
3096 ret = 0;
3097 goto out;
3098 case NL80211_IFTYPE_STATION:
3099 break;
3100 case NL80211_IFTYPE_MONITOR:
3101 /* always disable PS when a monitor interface is active */
3102 mvmvif->ps_disabled = true;
3103 break;
3104 default:
3105 ret = -EINVAL;
3106 goto out;
3107 }
3108
3109 ret = iwl_mvm_binding_add_vif(mvm, vif);
3110 if (ret)
3111 goto out;
3112
3113 /*
3114 * Power state must be updated before quotas,
3115 * otherwise fw will complain.
3116 */
3117 iwl_mvm_power_update_mac(mvm);
3118
3119 /* Setting the quota at this stage is only required for monitor
3120 * interfaces. For the other types, the bss_info changed flow
3121 * will handle quota settings.
3122 */
3123 if (vif->type == NL80211_IFTYPE_MONITOR) {
3124 mvmvif->monitor_active = true;
3125 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3126 if (ret)
3127 goto out_remove_binding;
3128 }
3129
3130 /* Handle binding during CSA */
3131 if (vif->type == NL80211_IFTYPE_AP) {
3132 iwl_mvm_update_quotas(mvm, false, NULL);
3133 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3134 }
3135
3136 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3137 u32 duration = 2 * vif->bss_conf.beacon_int;
3138
3139 /* iwl_mvm_protect_session() reads directly from the
3140 * device (the system time), so make sure it is
3141 * available.
3142 */
3143 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3144 if (ret)
3145 goto out_remove_binding;
3146
3147 /* Protect the session to make sure we hear the first
3148 * beacon on the new channel.
3149 */
3150 iwl_mvm_protect_session(mvm, vif, duration, duration,
3151 vif->bss_conf.beacon_int / 2,
3152 true);
3153
3154 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3155
3156 iwl_mvm_update_quotas(mvm, false, NULL);
3157 }
3158
3159 goto out;
3160
3161 out_remove_binding:
3162 iwl_mvm_binding_remove_vif(mvm, vif);
3163 iwl_mvm_power_update_mac(mvm);
3164 out:
3165 if (ret)
3166 mvmvif->phy_ctxt = NULL;
3167 return ret;
3168 }
3169 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3170 struct ieee80211_vif *vif,
3171 struct ieee80211_chanctx_conf *ctx)
3172 {
3173 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3174 int ret;
3175
3176 mutex_lock(&mvm->mutex);
3177 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3178 mutex_unlock(&mvm->mutex);
3179
3180 return ret;
3181 }
3182
3183 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3184 struct ieee80211_vif *vif,
3185 struct ieee80211_chanctx_conf *ctx,
3186 bool switching_chanctx)
3187 {
3188 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3189 struct ieee80211_vif *disabled_vif = NULL;
3190
3191 lockdep_assert_held(&mvm->mutex);
3192
3193 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3194
3195 switch (vif->type) {
3196 case NL80211_IFTYPE_ADHOC:
3197 goto out;
3198 case NL80211_IFTYPE_MONITOR:
3199 mvmvif->monitor_active = false;
3200 mvmvif->ps_disabled = false;
3201 break;
3202 case NL80211_IFTYPE_AP:
3203 /* This part is triggered only during CSA */
3204 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3205 goto out;
3206
3207 mvmvif->csa_countdown = false;
3208
3209 /* Set CS bit on all the stations */
3210 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3211
3212 /* Save blocked iface, the timeout is set on the next beacon */
3213 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3214
3215 mvmvif->ap_ibss_active = false;
3216 break;
3217 case NL80211_IFTYPE_STATION:
3218 if (!switching_chanctx)
3219 break;
3220
3221 disabled_vif = vif;
3222
3223 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3224 break;
3225 default:
3226 break;
3227 }
3228
3229 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3230 iwl_mvm_binding_remove_vif(mvm, vif);
3231
3232 out:
3233 mvmvif->phy_ctxt = NULL;
3234 iwl_mvm_power_update_mac(mvm);
3235 }
3236
3237 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3238 struct ieee80211_vif *vif,
3239 struct ieee80211_chanctx_conf *ctx)
3240 {
3241 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3242
3243 mutex_lock(&mvm->mutex);
3244 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3245 mutex_unlock(&mvm->mutex);
3246 }
3247
3248 static int
3249 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3250 struct ieee80211_vif_chanctx_switch *vifs)
3251 {
3252 int ret;
3253
3254 mutex_lock(&mvm->mutex);
3255 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3256 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3257
3258 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3259 if (ret) {
3260 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3261 goto out_reassign;
3262 }
3263
3264 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3265 true);
3266 if (ret) {
3267 IWL_ERR(mvm,
3268 "failed to assign new_ctx during channel switch\n");
3269 goto out_remove;
3270 }
3271
3272 /* we don't support TDLS during DCM - can be caused by channel switch */
3273 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3274 iwl_mvm_teardown_tdls_peers(mvm);
3275
3276 goto out;
3277
3278 out_remove:
3279 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3280
3281 out_reassign:
3282 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3283 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3284 goto out_restart;
3285 }
3286
3287 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3288 true)) {
3289 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3290 goto out_restart;
3291 }
3292
3293 goto out;
3294
3295 out_restart:
3296 /* things keep failing, better restart the hw */
3297 iwl_mvm_nic_restart(mvm, false);
3298
3299 out:
3300 mutex_unlock(&mvm->mutex);
3301
3302 return ret;
3303 }
3304
3305 static int
3306 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3307 struct ieee80211_vif_chanctx_switch *vifs)
3308 {
3309 int ret;
3310
3311 mutex_lock(&mvm->mutex);
3312 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3313
3314 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3315 true);
3316 if (ret) {
3317 IWL_ERR(mvm,
3318 "failed to assign new_ctx during channel switch\n");
3319 goto out_reassign;
3320 }
3321
3322 goto out;
3323
3324 out_reassign:
3325 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3326 true)) {
3327 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3328 goto out_restart;
3329 }
3330
3331 goto out;
3332
3333 out_restart:
3334 /* things keep failing, better restart the hw */
3335 iwl_mvm_nic_restart(mvm, false);
3336
3337 out:
3338 mutex_unlock(&mvm->mutex);
3339
3340 return ret;
3341 }
3342
3343 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3344 struct ieee80211_vif_chanctx_switch *vifs,
3345 int n_vifs,
3346 enum ieee80211_chanctx_switch_mode mode)
3347 {
3348 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3349 int ret;
3350
3351 /* we only support a single-vif right now */
3352 if (n_vifs > 1)
3353 return -EOPNOTSUPP;
3354
3355 switch (mode) {
3356 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3357 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3358 break;
3359 case CHANCTX_SWMODE_REASSIGN_VIF:
3360 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3361 break;
3362 default:
3363 ret = -EOPNOTSUPP;
3364 break;
3365 }
3366
3367 return ret;
3368 }
3369
3370 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3371 struct ieee80211_sta *sta,
3372 bool set)
3373 {
3374 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3375 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3376
3377 if (!mvm_sta || !mvm_sta->vif) {
3378 IWL_ERR(mvm, "Station is not associated to a vif\n");
3379 return -EINVAL;
3380 }
3381
3382 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3383 }
3384
3385 #ifdef CONFIG_NL80211_TESTMODE
3386 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3387 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3388 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3389 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3390 };
3391
3392 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3393 struct ieee80211_vif *vif,
3394 void *data, int len)
3395 {
3396 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3397 int err;
3398 u32 noa_duration;
3399
3400 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3401 if (err)
3402 return err;
3403
3404 if (!tb[IWL_MVM_TM_ATTR_CMD])
3405 return -EINVAL;
3406
3407 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3408 case IWL_MVM_TM_CMD_SET_NOA:
3409 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3410 !vif->bss_conf.enable_beacon ||
3411 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3412 return -EINVAL;
3413
3414 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3415 if (noa_duration >= vif->bss_conf.beacon_int)
3416 return -EINVAL;
3417
3418 mvm->noa_duration = noa_duration;
3419 mvm->noa_vif = vif;
3420
3421 return iwl_mvm_update_quotas(mvm, false, NULL);
3422 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3423 /* must be associated client vif - ignore authorized */
3424 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3425 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3426 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3427 return -EINVAL;
3428
3429 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3430 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3431 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3432 }
3433
3434 return -EOPNOTSUPP;
3435 }
3436
3437 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3438 struct ieee80211_vif *vif,
3439 void *data, int len)
3440 {
3441 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3442 int err;
3443
3444 mutex_lock(&mvm->mutex);
3445 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3446 mutex_unlock(&mvm->mutex);
3447
3448 return err;
3449 }
3450 #endif
3451
3452 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3453 struct ieee80211_vif *vif,
3454 struct ieee80211_channel_switch *chsw)
3455 {
3456 /* By implementing this operation, we prevent mac80211 from
3457 * starting its own channel switch timer, so that we can call
3458 * ieee80211_chswitch_done() ourselves at the right time
3459 * (which is when the absence time event starts).
3460 */
3461
3462 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3463 "dummy channel switch op\n");
3464 }
3465
3466 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3467 struct ieee80211_vif *vif,
3468 struct ieee80211_channel_switch *chsw)
3469 {
3470 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3471 struct ieee80211_vif *csa_vif;
3472 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3473 u32 apply_time;
3474 int ret;
3475
3476 mutex_lock(&mvm->mutex);
3477
3478 mvmvif->csa_failed = false;
3479
3480 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3481 chsw->chandef.center_freq1);
3482
3483 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3484
3485 switch (vif->type) {
3486 case NL80211_IFTYPE_AP:
3487 csa_vif =
3488 rcu_dereference_protected(mvm->csa_vif,
3489 lockdep_is_held(&mvm->mutex));
3490 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3491 "Another CSA is already in progress")) {
3492 ret = -EBUSY;
3493 goto out_unlock;
3494 }
3495
3496 rcu_assign_pointer(mvm->csa_vif, vif);
3497
3498 if (WARN_ONCE(mvmvif->csa_countdown,
3499 "Previous CSA countdown didn't complete")) {
3500 ret = -EBUSY;
3501 goto out_unlock;
3502 }
3503
3504 break;
3505 case NL80211_IFTYPE_STATION:
3506 /* Schedule the time event to a bit before beacon 1,
3507 * to make sure we're in the new channel when the
3508 * GO/AP arrives.
3509 */
3510 apply_time = chsw->device_timestamp +
3511 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3512 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3513
3514 if (chsw->block_tx)
3515 iwl_mvm_csa_client_absent(mvm, vif);
3516
3517 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3518 apply_time);
3519 if (mvmvif->bf_data.bf_enabled) {
3520 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3521 if (ret)
3522 goto out_unlock;
3523 }
3524
3525 break;
3526 default:
3527 break;
3528 }
3529
3530 mvmvif->ps_disabled = true;
3531
3532 ret = iwl_mvm_power_update_ps(mvm);
3533 if (ret)
3534 goto out_unlock;
3535
3536 /* we won't be on this channel any longer */
3537 iwl_mvm_teardown_tdls_peers(mvm);
3538
3539 out_unlock:
3540 mutex_unlock(&mvm->mutex);
3541
3542 return ret;
3543 }
3544
3545 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3546 struct ieee80211_vif *vif)
3547 {
3548 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3549 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3550 int ret;
3551
3552 mutex_lock(&mvm->mutex);
3553
3554 if (mvmvif->csa_failed) {
3555 mvmvif->csa_failed = false;
3556 ret = -EIO;
3557 goto out_unlock;
3558 }
3559
3560 if (vif->type == NL80211_IFTYPE_STATION) {
3561 struct iwl_mvm_sta *mvmsta;
3562
3563 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3564 mvmvif->ap_sta_id);
3565
3566 if (WARN_ON(!mvmsta)) {
3567 ret = -EIO;
3568 goto out_unlock;
3569 }
3570
3571 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3572
3573 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3574
3575 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3576 if (ret)
3577 goto out_unlock;
3578
3579 iwl_mvm_stop_session_protection(mvm, vif);
3580 }
3581
3582 mvmvif->ps_disabled = false;
3583
3584 ret = iwl_mvm_power_update_ps(mvm);
3585
3586 out_unlock:
3587 mutex_unlock(&mvm->mutex);
3588
3589 return ret;
3590 }
3591
3592 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3593 struct ieee80211_vif *vif, u32 queues, bool drop)
3594 {
3595 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3596 struct iwl_mvm_vif *mvmvif;
3597 struct iwl_mvm_sta *mvmsta;
3598 struct ieee80211_sta *sta;
3599 int i;
3600 u32 msk = 0;
3601
3602 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3603 return;
3604
3605 mutex_lock(&mvm->mutex);
3606 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3607
3608 /* flush the AP-station and all TDLS peers */
3609 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3610 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3611 lockdep_is_held(&mvm->mutex));
3612 if (IS_ERR_OR_NULL(sta))
3613 continue;
3614
3615 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3616 if (mvmsta->vif != vif)
3617 continue;
3618
3619 /* make sure only TDLS peers or the AP are flushed */
3620 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3621
3622 msk |= mvmsta->tfd_queue_msk;
3623 }
3624
3625 if (drop) {
3626 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3627 IWL_ERR(mvm, "flush request fail\n");
3628 mutex_unlock(&mvm->mutex);
3629 } else {
3630 mutex_unlock(&mvm->mutex);
3631
3632 /* this can take a while, and we may need/want other operations
3633 * to succeed while doing this, so do it without the mutex held
3634 */
3635 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3636 }
3637 }
3638
3639 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3640 struct survey_info *survey)
3641 {
3642 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3643 int ret;
3644
3645 memset(survey, 0, sizeof(*survey));
3646
3647 /* only support global statistics right now */
3648 if (idx != 0)
3649 return -ENOENT;
3650
3651 if (fw_has_capa(&mvm->fw->ucode_capa,
3652 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3653 return -ENOENT;
3654
3655 mutex_lock(&mvm->mutex);
3656
3657 if (mvm->ucode_loaded) {
3658 ret = iwl_mvm_request_statistics(mvm, false);
3659 if (ret)
3660 goto out;
3661 }
3662
3663 survey->filled = SURVEY_INFO_TIME |
3664 SURVEY_INFO_TIME_RX |
3665 SURVEY_INFO_TIME_TX |
3666 SURVEY_INFO_TIME_SCAN;
3667 survey->time = mvm->accu_radio_stats.on_time_rf +
3668 mvm->radio_stats.on_time_rf;
3669 do_div(survey->time, USEC_PER_MSEC);
3670
3671 survey->time_rx = mvm->accu_radio_stats.rx_time +
3672 mvm->radio_stats.rx_time;
3673 do_div(survey->time_rx, USEC_PER_MSEC);
3674
3675 survey->time_tx = mvm->accu_radio_stats.tx_time +
3676 mvm->radio_stats.tx_time;
3677 do_div(survey->time_tx, USEC_PER_MSEC);
3678
3679 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3680 mvm->radio_stats.on_time_scan;
3681 do_div(survey->time_scan, USEC_PER_MSEC);
3682
3683 ret = 0;
3684 out:
3685 mutex_unlock(&mvm->mutex);
3686 return ret;
3687 }
3688
3689 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3690 struct ieee80211_vif *vif,
3691 struct ieee80211_sta *sta,
3692 struct station_info *sinfo)
3693 {
3694 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3695 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3696 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3697
3698 if (fw_has_capa(&mvm->fw->ucode_capa,
3699 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3700 return;
3701
3702 /* if beacon filtering isn't on mac80211 does it anyway */
3703 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3704 return;
3705
3706 if (!vif->bss_conf.assoc)
3707 return;
3708
3709 mutex_lock(&mvm->mutex);
3710
3711 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3712 goto unlock;
3713
3714 if (iwl_mvm_request_statistics(mvm, false))
3715 goto unlock;
3716
3717 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3718 mvmvif->beacon_stats.accu_num_beacons;
3719 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3720 if (mvmvif->beacon_stats.avg_signal) {
3721 /* firmware only reports a value after RXing a few beacons */
3722 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3723 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3724 }
3725 unlock:
3726 mutex_unlock(&mvm->mutex);
3727 }
3728
3729 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3730 struct ieee80211_vif *vif,
3731 const struct ieee80211_event *event)
3732 {
3733 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
3734 do { \
3735 if ((_cnt) && --(_cnt)) \
3736 break; \
3737 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3738 } while (0)
3739
3740 struct iwl_fw_dbg_trigger_tlv *trig;
3741 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3742
3743 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3744 return;
3745
3746 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3747 trig_mlme = (void *)trig->data;
3748 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3749 return;
3750
3751 if (event->u.mlme.data == ASSOC_EVENT) {
3752 if (event->u.mlme.status == MLME_DENIED)
3753 CHECK_MLME_TRIGGER(mvm, trig, buf,
3754 trig_mlme->stop_assoc_denied,
3755 "DENIED ASSOC: reason %d",
3756 event->u.mlme.reason);
3757 else if (event->u.mlme.status == MLME_TIMEOUT)
3758 CHECK_MLME_TRIGGER(mvm, trig, buf,
3759 trig_mlme->stop_assoc_timeout,
3760 "ASSOC TIMEOUT");
3761 } else if (event->u.mlme.data == AUTH_EVENT) {
3762 if (event->u.mlme.status == MLME_DENIED)
3763 CHECK_MLME_TRIGGER(mvm, trig, buf,
3764 trig_mlme->stop_auth_denied,
3765 "DENIED AUTH: reason %d",
3766 event->u.mlme.reason);
3767 else if (event->u.mlme.status == MLME_TIMEOUT)
3768 CHECK_MLME_TRIGGER(mvm, trig, buf,
3769 trig_mlme->stop_auth_timeout,
3770 "AUTH TIMEOUT");
3771 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3772 CHECK_MLME_TRIGGER(mvm, trig, buf,
3773 trig_mlme->stop_rx_deauth,
3774 "DEAUTH RX %d", event->u.mlme.reason);
3775 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3776 CHECK_MLME_TRIGGER(mvm, trig, buf,
3777 trig_mlme->stop_tx_deauth,
3778 "DEAUTH TX %d", event->u.mlme.reason);
3779 }
3780 #undef CHECK_MLME_TRIGGER
3781 }
3782
3783 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3784 struct ieee80211_vif *vif,
3785 const struct ieee80211_event *event)
3786 {
3787 struct iwl_fw_dbg_trigger_tlv *trig;
3788 struct iwl_fw_dbg_trigger_ba *ba_trig;
3789
3790 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3791 return;
3792
3793 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3794 ba_trig = (void *)trig->data;
3795 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3796 return;
3797
3798 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3799 return;
3800
3801 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3802 "BAR received from %pM, tid %d, ssn %d",
3803 event->u.ba.sta->addr, event->u.ba.tid,
3804 event->u.ba.ssn);
3805 }
3806
3807 static void
3808 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3809 struct ieee80211_vif *vif,
3810 const struct ieee80211_event *event)
3811 {
3812 struct iwl_fw_dbg_trigger_tlv *trig;
3813 struct iwl_fw_dbg_trigger_ba *ba_trig;
3814
3815 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3816 return;
3817
3818 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3819 ba_trig = (void *)trig->data;
3820 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3821 return;
3822
3823 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3824 return;
3825
3826 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3827 "Frame from %pM timed out, tid %d",
3828 event->u.ba.sta->addr, event->u.ba.tid);
3829 }
3830
3831 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3832 struct ieee80211_vif *vif,
3833 const struct ieee80211_event *event)
3834 {
3835 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3836
3837 switch (event->type) {
3838 case MLME_EVENT:
3839 iwl_mvm_event_mlme_callback(mvm, vif, event);
3840 break;
3841 case BAR_RX_EVENT:
3842 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3843 break;
3844 case BA_FRAME_TIMEOUT:
3845 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3846 break;
3847 default:
3848 break;
3849 }
3850 }
3851
3852 const struct ieee80211_ops iwl_mvm_hw_ops = {
3853 .tx = iwl_mvm_mac_tx,
3854 .ampdu_action = iwl_mvm_mac_ampdu_action,
3855 .start = iwl_mvm_mac_start,
3856 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3857 .stop = iwl_mvm_mac_stop,
3858 .add_interface = iwl_mvm_mac_add_interface,
3859 .remove_interface = iwl_mvm_mac_remove_interface,
3860 .config = iwl_mvm_mac_config,
3861 .prepare_multicast = iwl_mvm_prepare_multicast,
3862 .configure_filter = iwl_mvm_configure_filter,
3863 .config_iface_filter = iwl_mvm_config_iface_filter,
3864 .bss_info_changed = iwl_mvm_bss_info_changed,
3865 .hw_scan = iwl_mvm_mac_hw_scan,
3866 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3867 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3868 .sta_state = iwl_mvm_mac_sta_state,
3869 .sta_notify = iwl_mvm_mac_sta_notify,
3870 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3871 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3872 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3873 .sta_rc_update = iwl_mvm_sta_rc_update,
3874 .conf_tx = iwl_mvm_mac_conf_tx,
3875 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3876 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3877 .flush = iwl_mvm_mac_flush,
3878 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3879 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3880 .set_key = iwl_mvm_mac_set_key,
3881 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3882 .remain_on_channel = iwl_mvm_roc,
3883 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3884 .add_chanctx = iwl_mvm_add_chanctx,
3885 .remove_chanctx = iwl_mvm_remove_chanctx,
3886 .change_chanctx = iwl_mvm_change_chanctx,
3887 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3888 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3889 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3890
3891 .start_ap = iwl_mvm_start_ap_ibss,
3892 .stop_ap = iwl_mvm_stop_ap_ibss,
3893 .join_ibss = iwl_mvm_start_ap_ibss,
3894 .leave_ibss = iwl_mvm_stop_ap_ibss,
3895
3896 .set_tim = iwl_mvm_set_tim,
3897
3898 .channel_switch = iwl_mvm_channel_switch,
3899 .pre_channel_switch = iwl_mvm_pre_channel_switch,
3900 .post_channel_switch = iwl_mvm_post_channel_switch,
3901
3902 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3903 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3904 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3905
3906 .event_callback = iwl_mvm_mac_event_callback,
3907
3908 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3909
3910 #ifdef CONFIG_PM_SLEEP
3911 /* look at d3.c */
3912 .suspend = iwl_mvm_suspend,
3913 .resume = iwl_mvm_resume,
3914 .set_wakeup = iwl_mvm_set_wakeup,
3915 .set_rekey_data = iwl_mvm_set_rekey_data,
3916 #if IS_ENABLED(CONFIG_IPV6)
3917 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3918 #endif
3919 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3920 #endif
3921 .get_survey = iwl_mvm_mac_get_survey,
3922 .sta_statistics = iwl_mvm_mac_sta_statistics,
3923 };
Linux kernel - Deliverables
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