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Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
27 *
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65 #include <linux/kernel.h>
66 #include <linux/slab.h>
67 #include <linux/skbuff.h>
68 #include <linux/netdevice.h>
69 #include <linux/etherdevice.h>
70 #include <linux/ip.h>
71 #include <linux/if_arp.h>
72 #include <linux/devcoredump.h>
73 #include <net/mac80211.h>
74 #include <net/ieee80211_radiotap.h>
75 #include <net/tcp.h>
76
77 #include "iwl-op-mode.h"
78 #include "iwl-io.h"
79 #include "mvm.h"
80 #include "sta.h"
81 #include "time-event.h"
82 #include "iwl-eeprom-parse.h"
83 #include "iwl-phy-db.h"
84 #include "testmode.h"
85 #include "iwl-fw-error-dump.h"
86 #include "iwl-prph.h"
87 #include "iwl-csr.h"
88 #include "iwl-nvm-parse.h"
89
90 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
91 {
92 .max = 1,
93 .types = BIT(NL80211_IFTYPE_STATION),
94 },
95 {
96 .max = 1,
97 .types = BIT(NL80211_IFTYPE_AP) |
98 BIT(NL80211_IFTYPE_P2P_CLIENT) |
99 BIT(NL80211_IFTYPE_P2P_GO),
100 },
101 {
102 .max = 1,
103 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
104 },
105 };
106
107 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
108 {
109 .num_different_channels = 2,
110 .max_interfaces = 3,
111 .limits = iwl_mvm_limits,
112 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
113 },
114 };
115
116 #ifdef CONFIG_PM_SLEEP
117 static const struct nl80211_wowlan_tcp_data_token_feature
118 iwl_mvm_wowlan_tcp_token_feature = {
119 .min_len = 0,
120 .max_len = 255,
121 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
122 };
123
124 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
125 .tok = &iwl_mvm_wowlan_tcp_token_feature,
126 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
127 sizeof(struct ethhdr) -
128 sizeof(struct iphdr) -
129 sizeof(struct tcphdr),
130 .data_interval_max = 65535, /* __le16 in API */
131 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
132 sizeof(struct ethhdr) -
133 sizeof(struct iphdr) -
134 sizeof(struct tcphdr),
135 .seq = true,
136 };
137 #endif
138
139 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
140 /*
141 * Use the reserved field to indicate magic values.
142 * these values will only be used internally by the driver,
143 * and won't make it to the fw (reserved will be 0).
144 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
145 * be the vif's ip address. in case there is not a single
146 * ip address (0, or more than 1), this attribute will
147 * be skipped.
148 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
149 * the LSB bytes of the vif's mac address
150 */
151 enum {
152 BC_FILTER_MAGIC_NONE = 0,
153 BC_FILTER_MAGIC_IP,
154 BC_FILTER_MAGIC_MAC,
155 };
156
157 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
158 {
159 /* arp */
160 .discard = 0,
161 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
162 .attrs = {
163 {
164 /* frame type - arp, hw type - ethernet */
165 .offset_type =
166 BCAST_FILTER_OFFSET_PAYLOAD_START,
167 .offset = sizeof(rfc1042_header),
168 .val = cpu_to_be32(0x08060001),
169 .mask = cpu_to_be32(0xffffffff),
170 },
171 {
172 /* arp dest ip */
173 .offset_type =
174 BCAST_FILTER_OFFSET_PAYLOAD_START,
175 .offset = sizeof(rfc1042_header) + 2 +
176 sizeof(struct arphdr) +
177 ETH_ALEN + sizeof(__be32) +
178 ETH_ALEN,
179 .mask = cpu_to_be32(0xffffffff),
180 /* mark it as special field */
181 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
182 },
183 },
184 },
185 {
186 /* dhcp offer bcast */
187 .discard = 0,
188 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
189 .attrs = {
190 {
191 /* udp dest port - 68 (bootp client)*/
192 .offset_type = BCAST_FILTER_OFFSET_IP_END,
193 .offset = offsetof(struct udphdr, dest),
194 .val = cpu_to_be32(0x00440000),
195 .mask = cpu_to_be32(0xffff0000),
196 },
197 {
198 /* dhcp - lsb bytes of client hw address */
199 .offset_type = BCAST_FILTER_OFFSET_IP_END,
200 .offset = 38,
201 .mask = cpu_to_be32(0xffffffff),
202 /* mark it as special field */
203 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
204 },
205 },
206 },
207 /* last filter must be empty */
208 {},
209 };
210 #endif
211
212 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
213 {
214 if (!iwl_mvm_is_d0i3_supported(mvm))
215 return;
216
217 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
218 spin_lock_bh(&mvm->refs_lock);
219 mvm->refs[ref_type]++;
220 spin_unlock_bh(&mvm->refs_lock);
221 iwl_trans_ref(mvm->trans);
222 }
223
224 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
225 {
226 if (!iwl_mvm_is_d0i3_supported(mvm))
227 return;
228
229 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
230 spin_lock_bh(&mvm->refs_lock);
231 WARN_ON(!mvm->refs[ref_type]--);
232 spin_unlock_bh(&mvm->refs_lock);
233 iwl_trans_unref(mvm->trans);
234 }
235
236 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
237 enum iwl_mvm_ref_type except_ref)
238 {
239 int i, j;
240
241 if (!iwl_mvm_is_d0i3_supported(mvm))
242 return;
243
244 spin_lock_bh(&mvm->refs_lock);
245 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
246 if (except_ref == i || !mvm->refs[i])
247 continue;
248
249 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
250 i, mvm->refs[i]);
251 for (j = 0; j < mvm->refs[i]; j++)
252 iwl_trans_unref(mvm->trans);
253 mvm->refs[i] = 0;
254 }
255 spin_unlock_bh(&mvm->refs_lock);
256 }
257
258 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
259 {
260 int i;
261 bool taken = false;
262
263 if (!iwl_mvm_is_d0i3_supported(mvm))
264 return true;
265
266 spin_lock_bh(&mvm->refs_lock);
267 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
268 if (mvm->refs[i]) {
269 taken = true;
270 break;
271 }
272 }
273 spin_unlock_bh(&mvm->refs_lock);
274
275 return taken;
276 }
277
278 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
279 {
280 iwl_mvm_ref(mvm, ref_type);
281
282 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
283 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
284 HZ)) {
285 WARN_ON_ONCE(1);
286 iwl_mvm_unref(mvm, ref_type);
287 return -EIO;
288 }
289
290 return 0;
291 }
292
293 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
294 {
295 int i;
296
297 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
298 for (i = 0; i < NUM_PHY_CTX; i++) {
299 mvm->phy_ctxts[i].id = i;
300 mvm->phy_ctxts[i].ref = 0;
301 }
302 }
303
304 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
305 const char *alpha2,
306 enum iwl_mcc_source src_id,
307 bool *changed)
308 {
309 struct ieee80211_regdomain *regd = NULL;
310 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
311 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
312 struct iwl_mcc_update_resp *resp;
313
314 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
315
316 lockdep_assert_held(&mvm->mutex);
317
318 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
319 if (IS_ERR_OR_NULL(resp)) {
320 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
321 PTR_ERR_OR_ZERO(resp));
322 goto out;
323 }
324
325 if (changed)
326 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
327
328 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
329 __le32_to_cpu(resp->n_channels),
330 resp->channels,
331 __le16_to_cpu(resp->mcc));
332 /* Store the return source id */
333 src_id = resp->source_id;
334 kfree(resp);
335 if (IS_ERR_OR_NULL(regd)) {
336 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
337 PTR_ERR_OR_ZERO(regd));
338 goto out;
339 }
340
341 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
342 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
343 mvm->lar_regdom_set = true;
344 mvm->mcc_src = src_id;
345
346 out:
347 return regd;
348 }
349
350 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
351 {
352 bool changed;
353 struct ieee80211_regdomain *regd;
354
355 if (!iwl_mvm_is_lar_supported(mvm))
356 return;
357
358 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
359 if (!IS_ERR_OR_NULL(regd)) {
360 /* only update the regulatory core if changed */
361 if (changed)
362 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
363
364 kfree(regd);
365 }
366 }
367
368 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
369 bool *changed)
370 {
371 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
372 iwl_mvm_is_wifi_mcc_supported(mvm) ?
373 MCC_SOURCE_GET_CURRENT :
374 MCC_SOURCE_OLD_FW, changed);
375 }
376
377 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
378 {
379 enum iwl_mcc_source used_src;
380 struct ieee80211_regdomain *regd;
381 int ret;
382 bool changed;
383 const struct ieee80211_regdomain *r =
384 rtnl_dereference(mvm->hw->wiphy->regd);
385
386 if (!r)
387 return -ENOENT;
388
389 /* save the last source in case we overwrite it below */
390 used_src = mvm->mcc_src;
391 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
392 /* Notify the firmware we support wifi location updates */
393 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
394 if (!IS_ERR_OR_NULL(regd))
395 kfree(regd);
396 }
397
398 /* Now set our last stored MCC and source */
399 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
400 &changed);
401 if (IS_ERR_OR_NULL(regd))
402 return -EIO;
403
404 /* update cfg80211 if the regdomain was changed */
405 if (changed)
406 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
407 else
408 ret = 0;
409
410 kfree(regd);
411 return ret;
412 }
413
414 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
415 {
416 struct ieee80211_hw *hw = mvm->hw;
417 int num_mac, ret, i;
418 static const u32 mvm_ciphers[] = {
419 WLAN_CIPHER_SUITE_WEP40,
420 WLAN_CIPHER_SUITE_WEP104,
421 WLAN_CIPHER_SUITE_TKIP,
422 WLAN_CIPHER_SUITE_CCMP,
423 };
424
425 /* Tell mac80211 our characteristics */
426 ieee80211_hw_set(hw, SIGNAL_DBM);
427 ieee80211_hw_set(hw, SPECTRUM_MGMT);
428 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
429 ieee80211_hw_set(hw, QUEUE_CONTROL);
430 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
431 ieee80211_hw_set(hw, SUPPORTS_PS);
432 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
433 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
434 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
435 ieee80211_hw_set(hw, CONNECTION_MONITOR);
436 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
437 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
438 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
439
440 hw->queues = mvm->first_agg_queue;
441 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
442 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
443 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
444 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
445 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
446 hw->rate_control_algorithm = "iwl-mvm-rs";
447 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
448 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
449
450 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2);
451 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
452 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
453 hw->wiphy->cipher_suites = mvm->ciphers;
454
455 /*
456 * Enable 11w if advertised by firmware and software crypto
457 * is not enabled (as the firmware will interpret some mgmt
458 * packets, so enabling it with software crypto isn't safe)
459 */
460 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
461 !iwlwifi_mod_params.sw_crypto) {
462 ieee80211_hw_set(hw, MFP_CAPABLE);
463 mvm->ciphers[hw->wiphy->n_cipher_suites] =
464 WLAN_CIPHER_SUITE_AES_CMAC;
465 hw->wiphy->n_cipher_suites++;
466 }
467
468 /* currently FW API supports only one optional cipher scheme */
469 if (mvm->fw->cs[0].cipher) {
470 mvm->hw->n_cipher_schemes = 1;
471 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
472 mvm->ciphers[hw->wiphy->n_cipher_suites] =
473 mvm->fw->cs[0].cipher;
474 hw->wiphy->n_cipher_suites++;
475 }
476
477 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
478 hw->wiphy->features |=
479 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
480 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
481 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
482
483 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
484 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
485 hw->chanctx_data_size = sizeof(u16);
486
487 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
488 BIT(NL80211_IFTYPE_P2P_CLIENT) |
489 BIT(NL80211_IFTYPE_AP) |
490 BIT(NL80211_IFTYPE_P2P_GO) |
491 BIT(NL80211_IFTYPE_P2P_DEVICE) |
492 BIT(NL80211_IFTYPE_ADHOC);
493
494 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
495 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
496 if (iwl_mvm_is_lar_supported(mvm))
497 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
498 else
499 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
500 REGULATORY_DISABLE_BEACON_HINTS;
501
502 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
503 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
504
505 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
506
507 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
508 hw->wiphy->n_iface_combinations =
509 ARRAY_SIZE(iwl_mvm_iface_combinations);
510
511 hw->wiphy->max_remain_on_channel_duration = 10000;
512 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
513 /* we can compensate an offset of up to 3 channels = 15 MHz */
514 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
515
516 /* Extract MAC address */
517 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
518 hw->wiphy->addresses = mvm->addresses;
519 hw->wiphy->n_addresses = 1;
520
521 /* Extract additional MAC addresses if available */
522 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
523 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
524
525 for (i = 1; i < num_mac; i++) {
526 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
527 ETH_ALEN);
528 mvm->addresses[i].addr[5]++;
529 hw->wiphy->n_addresses++;
530 }
531
532 iwl_mvm_reset_phy_ctxts(mvm);
533
534 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
535
536 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
537
538 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
539 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
540 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
541
542 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
543 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
544 else
545 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
546
547 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
548 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
549 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
550 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
551 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
552 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
553
554 if (fw_has_capa(&mvm->fw->ucode_capa,
555 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
556 fw_has_api(&mvm->fw->ucode_capa,
557 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
558 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
559 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
560 }
561
562 hw->wiphy->hw_version = mvm->trans->hw_id;
563
564 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
565 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
566 else
567 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
568
569 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
570 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
571 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
572 /* we create the 802.11 header and zero length SSID IE. */
573 hw->wiphy->max_sched_scan_ie_len =
574 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
575
576 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
577 NL80211_FEATURE_LOW_PRIORITY_SCAN |
578 NL80211_FEATURE_P2P_GO_OPPPS |
579 NL80211_FEATURE_DYNAMIC_SMPS |
580 NL80211_FEATURE_STATIC_SMPS |
581 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
582
583 if (fw_has_capa(&mvm->fw->ucode_capa,
584 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
585 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
586 if (fw_has_capa(&mvm->fw->ucode_capa,
587 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
588 hw->wiphy->features |= NL80211_FEATURE_QUIET;
589
590 if (fw_has_capa(&mvm->fw->ucode_capa,
591 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
592 hw->wiphy->features |=
593 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
594
595 if (fw_has_capa(&mvm->fw->ucode_capa,
596 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
597 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
598
599 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
600
601 #ifdef CONFIG_PM_SLEEP
602 if (iwl_mvm_is_d0i3_supported(mvm) &&
603 device_can_wakeup(mvm->trans->dev)) {
604 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
605 hw->wiphy->wowlan = &mvm->wowlan;
606 }
607
608 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
609 mvm->trans->ops->d3_suspend &&
610 mvm->trans->ops->d3_resume &&
611 device_can_wakeup(mvm->trans->dev)) {
612 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
613 WIPHY_WOWLAN_DISCONNECT |
614 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
615 WIPHY_WOWLAN_RFKILL_RELEASE |
616 WIPHY_WOWLAN_NET_DETECT;
617 if (!iwlwifi_mod_params.sw_crypto)
618 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
619 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
620 WIPHY_WOWLAN_4WAY_HANDSHAKE;
621
622 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
623 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
624 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
625 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
626 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
627 hw->wiphy->wowlan = &mvm->wowlan;
628 }
629 #endif
630
631 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
632 /* assign default bcast filtering configuration */
633 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
634 #endif
635
636 ret = iwl_mvm_leds_init(mvm);
637 if (ret)
638 return ret;
639
640 if (fw_has_capa(&mvm->fw->ucode_capa,
641 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
642 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
643 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
644 ieee80211_hw_set(hw, TDLS_WIDER_BW);
645 }
646
647 if (fw_has_capa(&mvm->fw->ucode_capa,
648 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
649 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
650 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
651 }
652
653 hw->netdev_features |= mvm->cfg->features;
654 if (!iwl_mvm_is_csum_supported(mvm))
655 hw->netdev_features &= ~NETIF_F_RXCSUM;
656
657 ret = ieee80211_register_hw(mvm->hw);
658 if (ret)
659 iwl_mvm_leds_exit(mvm);
660
661 return ret;
662 }
663
664 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
665 struct ieee80211_sta *sta,
666 struct sk_buff *skb)
667 {
668 struct iwl_mvm_sta *mvmsta;
669 bool defer = false;
670
671 /*
672 * double check the IN_D0I3 flag both before and after
673 * taking the spinlock, in order to prevent taking
674 * the spinlock when not needed.
675 */
676 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
677 return false;
678
679 spin_lock(&mvm->d0i3_tx_lock);
680 /*
681 * testing the flag again ensures the skb dequeue
682 * loop (on d0i3 exit) hasn't run yet.
683 */
684 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
685 goto out;
686
687 mvmsta = iwl_mvm_sta_from_mac80211(sta);
688 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
689 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
690 goto out;
691
692 __skb_queue_tail(&mvm->d0i3_tx, skb);
693 ieee80211_stop_queues(mvm->hw);
694
695 /* trigger wakeup */
696 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
697 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
698
699 defer = true;
700 out:
701 spin_unlock(&mvm->d0i3_tx_lock);
702 return defer;
703 }
704
705 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
706 struct ieee80211_tx_control *control,
707 struct sk_buff *skb)
708 {
709 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
710 struct ieee80211_sta *sta = control->sta;
711 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
712 struct ieee80211_hdr *hdr = (void *)skb->data;
713
714 if (iwl_mvm_is_radio_killed(mvm)) {
715 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
716 goto drop;
717 }
718
719 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
720 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
721 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
722 goto drop;
723
724 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
725 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
726 ieee80211_is_mgmt(hdr->frame_control) &&
727 !ieee80211_is_deauth(hdr->frame_control) &&
728 !ieee80211_is_disassoc(hdr->frame_control) &&
729 !ieee80211_is_action(hdr->frame_control)))
730 sta = NULL;
731
732 if (sta) {
733 if (iwl_mvm_defer_tx(mvm, sta, skb))
734 return;
735 if (iwl_mvm_tx_skb(mvm, skb, sta))
736 goto drop;
737 return;
738 }
739
740 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
741 goto drop;
742 return;
743 drop:
744 ieee80211_free_txskb(hw, skb);
745 }
746
747 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
748 {
749 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
750 return false;
751 return true;
752 }
753
754 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
755 {
756 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
757 return false;
758 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
759 return true;
760
761 /* enabled by default */
762 return true;
763 }
764
765 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
766 do { \
767 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
768 break; \
769 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
770 } while (0)
771
772 static void
773 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
774 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
775 enum ieee80211_ampdu_mlme_action action)
776 {
777 struct iwl_fw_dbg_trigger_tlv *trig;
778 struct iwl_fw_dbg_trigger_ba *ba_trig;
779
780 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
781 return;
782
783 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
784 ba_trig = (void *)trig->data;
785
786 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
787 return;
788
789 switch (action) {
790 case IEEE80211_AMPDU_TX_OPERATIONAL: {
791 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
792 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
793
794 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
795 "TX AGG START: MAC %pM tid %d ssn %d\n",
796 sta->addr, tid, tid_data->ssn);
797 break;
798 }
799 case IEEE80211_AMPDU_TX_STOP_CONT:
800 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
801 "TX AGG STOP: MAC %pM tid %d\n",
802 sta->addr, tid);
803 break;
804 case IEEE80211_AMPDU_RX_START:
805 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
806 "RX AGG START: MAC %pM tid %d ssn %d\n",
807 sta->addr, tid, rx_ba_ssn);
808 break;
809 case IEEE80211_AMPDU_RX_STOP:
810 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
811 "RX AGG STOP: MAC %pM tid %d\n",
812 sta->addr, tid);
813 break;
814 default:
815 break;
816 }
817 }
818
819 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
820 struct ieee80211_vif *vif,
821 enum ieee80211_ampdu_mlme_action action,
822 struct ieee80211_sta *sta, u16 tid,
823 u16 *ssn, u8 buf_size)
824 {
825 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
826 int ret;
827 bool tx_agg_ref = false;
828
829 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
830 sta->addr, tid, action);
831
832 if (!(mvm->nvm_data->sku_cap_11n_enable))
833 return -EACCES;
834
835 /* return from D0i3 before starting a new Tx aggregation */
836 switch (action) {
837 case IEEE80211_AMPDU_TX_START:
838 case IEEE80211_AMPDU_TX_STOP_CONT:
839 case IEEE80211_AMPDU_TX_STOP_FLUSH:
840 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
841 case IEEE80211_AMPDU_TX_OPERATIONAL:
842 /*
843 * for tx start, wait synchronously until D0i3 exit to
844 * get the correct sequence number for the tid.
845 * additionally, some other ampdu actions use direct
846 * target access, which is not handled automatically
847 * by the trans layer (unlike commands), so wait for
848 * d0i3 exit in these cases as well.
849 */
850 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
851 if (ret)
852 return ret;
853
854 tx_agg_ref = true;
855 break;
856 default:
857 break;
858 }
859
860 mutex_lock(&mvm->mutex);
861
862 switch (action) {
863 case IEEE80211_AMPDU_RX_START:
864 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
865 ret = -EINVAL;
866 break;
867 }
868 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
869 break;
870 case IEEE80211_AMPDU_RX_STOP:
871 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
872 break;
873 case IEEE80211_AMPDU_TX_START:
874 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
875 ret = -EINVAL;
876 break;
877 }
878 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
879 break;
880 case IEEE80211_AMPDU_TX_STOP_CONT:
881 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
882 break;
883 case IEEE80211_AMPDU_TX_STOP_FLUSH:
884 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
885 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
886 break;
887 case IEEE80211_AMPDU_TX_OPERATIONAL:
888 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
889 break;
890 default:
891 WARN_ON_ONCE(1);
892 ret = -EINVAL;
893 break;
894 }
895
896 if (!ret) {
897 u16 rx_ba_ssn = 0;
898
899 if (action == IEEE80211_AMPDU_RX_START)
900 rx_ba_ssn = *ssn;
901
902 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
903 rx_ba_ssn, action);
904 }
905 mutex_unlock(&mvm->mutex);
906
907 /*
908 * If the tid is marked as started, we won't use it for offloaded
909 * traffic on the next D0i3 entry. It's safe to unref.
910 */
911 if (tx_agg_ref)
912 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
913
914 return ret;
915 }
916
917 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
918 struct ieee80211_vif *vif)
919 {
920 struct iwl_mvm *mvm = data;
921 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
922
923 mvmvif->uploaded = false;
924 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
925
926 spin_lock_bh(&mvm->time_event_lock);
927 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
928 spin_unlock_bh(&mvm->time_event_lock);
929
930 mvmvif->phy_ctxt = NULL;
931 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
932 }
933
934 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
935 const void *data, size_t datalen)
936 {
937 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
938 ssize_t bytes_read;
939 ssize_t bytes_read_trans;
940
941 if (offset < dump_ptrs->op_mode_len) {
942 bytes_read = min_t(ssize_t, count,
943 dump_ptrs->op_mode_len - offset);
944 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
945 bytes_read);
946 offset += bytes_read;
947 count -= bytes_read;
948
949 if (count == 0)
950 return bytes_read;
951 } else {
952 bytes_read = 0;
953 }
954
955 if (!dump_ptrs->trans_ptr)
956 return bytes_read;
957
958 offset -= dump_ptrs->op_mode_len;
959 bytes_read_trans = min_t(ssize_t, count,
960 dump_ptrs->trans_ptr->len - offset);
961 memcpy(buffer + bytes_read,
962 (u8 *)dump_ptrs->trans_ptr->data + offset,
963 bytes_read_trans);
964
965 return bytes_read + bytes_read_trans;
966 }
967
968 static void iwl_mvm_free_coredump(const void *data)
969 {
970 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
971
972 vfree(fw_error_dump->op_mode_ptr);
973 vfree(fw_error_dump->trans_ptr);
974 kfree(fw_error_dump);
975 }
976
977 static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
978 struct iwl_fw_error_dump_data **dump_data)
979 {
980 struct iwl_fw_error_dump_fifo *fifo_hdr;
981 u32 *fifo_data;
982 u32 fifo_len;
983 unsigned long flags;
984 int i, j;
985
986 if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
987 return;
988
989 /* Pull RXF data from all RXFs */
990 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
991 /*
992 * Keep aside the additional offset that might be needed for
993 * next RXF
994 */
995 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
996
997 fifo_hdr = (void *)(*dump_data)->data;
998 fifo_data = (void *)fifo_hdr->data;
999 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
1000
1001 /* No need to try to read the data if the length is 0 */
1002 if (fifo_len == 0)
1003 continue;
1004
1005 /* Add a TLV for the RXF */
1006 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
1007 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
1008
1009 fifo_hdr->fifo_num = cpu_to_le32(i);
1010 fifo_hdr->available_bytes =
1011 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1012 RXF_RD_D_SPACE +
1013 offset_diff));
1014 fifo_hdr->wr_ptr =
1015 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1016 RXF_RD_WR_PTR +
1017 offset_diff));
1018 fifo_hdr->rd_ptr =
1019 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1020 RXF_RD_RD_PTR +
1021 offset_diff));
1022 fifo_hdr->fence_ptr =
1023 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1024 RXF_RD_FENCE_PTR +
1025 offset_diff));
1026 fifo_hdr->fence_mode =
1027 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1028 RXF_SET_FENCE_MODE +
1029 offset_diff));
1030
1031 /* Lock fence */
1032 iwl_trans_write_prph(mvm->trans,
1033 RXF_SET_FENCE_MODE + offset_diff, 0x1);
1034 /* Set fence pointer to the same place like WR pointer */
1035 iwl_trans_write_prph(mvm->trans,
1036 RXF_LD_WR2FENCE + offset_diff, 0x1);
1037 /* Set fence offset */
1038 iwl_trans_write_prph(mvm->trans,
1039 RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
1040 0x0);
1041
1042 /* Read FIFO */
1043 fifo_len /= sizeof(u32); /* Size in DWORDS */
1044 for (j = 0; j < fifo_len; j++)
1045 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
1046 RXF_FIFO_RD_FENCE_INC +
1047 offset_diff);
1048 *dump_data = iwl_fw_error_next_data(*dump_data);
1049 }
1050
1051 /* Pull TXF data from all TXFs */
1052 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
1053 /* Mark the number of TXF we're pulling now */
1054 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
1055
1056 fifo_hdr = (void *)(*dump_data)->data;
1057 fifo_data = (void *)fifo_hdr->data;
1058 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
1059
1060 /* No need to try to read the data if the length is 0 */
1061 if (fifo_len == 0)
1062 continue;
1063
1064 /* Add a TLV for the FIFO */
1065 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
1066 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
1067
1068 fifo_hdr->fifo_num = cpu_to_le32(i);
1069 fifo_hdr->available_bytes =
1070 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1071 TXF_FIFO_ITEM_CNT));
1072 fifo_hdr->wr_ptr =
1073 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1074 TXF_WR_PTR));
1075 fifo_hdr->rd_ptr =
1076 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1077 TXF_RD_PTR));
1078 fifo_hdr->fence_ptr =
1079 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1080 TXF_FENCE_PTR));
1081 fifo_hdr->fence_mode =
1082 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1083 TXF_LOCK_FENCE));
1084
1085 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
1086 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
1087 TXF_WR_PTR);
1088
1089 /* Dummy-read to advance the read pointer to the head */
1090 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
1091
1092 /* Read FIFO */
1093 fifo_len /= sizeof(u32); /* Size in DWORDS */
1094 for (j = 0; j < fifo_len; j++)
1095 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
1096 TXF_READ_MODIFY_DATA);
1097 *dump_data = iwl_fw_error_next_data(*dump_data);
1098 }
1099
1100 iwl_trans_release_nic_access(mvm->trans, &flags);
1101 }
1102
1103 void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
1104 {
1105 if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert ||
1106 !mvm->fw_dump_desc)
1107 return;
1108
1109 kfree(mvm->fw_dump_desc);
1110 mvm->fw_dump_desc = NULL;
1111 }
1112
1113 #define IWL8260_ICCM_OFFSET 0x44000 /* Only for B-step */
1114 #define IWL8260_ICCM_LEN 0xC000 /* Only for B-step */
1115
1116 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
1117 {
1118 struct iwl_fw_error_dump_file *dump_file;
1119 struct iwl_fw_error_dump_data *dump_data;
1120 struct iwl_fw_error_dump_info *dump_info;
1121 struct iwl_fw_error_dump_mem *dump_mem;
1122 struct iwl_fw_error_dump_trigger_desc *dump_trig;
1123 struct iwl_mvm_dump_ptrs *fw_error_dump;
1124 u32 sram_len, sram_ofs;
1125 u32 file_len, fifo_data_len = 0;
1126 u32 smem_len = mvm->cfg->smem_len;
1127 u32 sram2_len = mvm->cfg->dccm2_len;
1128 bool monitor_dump_only = false;
1129
1130 lockdep_assert_held(&mvm->mutex);
1131
1132 if (mvm->fw_dump_trig &&
1133 mvm->fw_dump_trig->mode & IWL_FW_DBG_TRIGGER_MONITOR_ONLY)
1134 monitor_dump_only = true;
1135
1136 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
1137 if (!fw_error_dump)
1138 return;
1139
1140 /* SRAM - include stack CCM if driver knows the values for it */
1141 if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
1142 const struct fw_img *img;
1143
1144 img = &mvm->fw->img[mvm->cur_ucode];
1145 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1146 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
1147 } else {
1148 sram_ofs = mvm->cfg->dccm_offset;
1149 sram_len = mvm->cfg->dccm_len;
1150 }
1151
1152 /* reading RXF/TXF sizes */
1153 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
1154 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
1155 int i;
1156
1157 fifo_data_len = 0;
1158
1159 /* Count RXF size */
1160 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
1161 if (!mem_cfg->rxfifo_size[i])
1162 continue;
1163
1164 /* Add header info */
1165 fifo_data_len += mem_cfg->rxfifo_size[i] +
1166 sizeof(*dump_data) +
1167 sizeof(struct iwl_fw_error_dump_fifo);
1168 }
1169
1170 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
1171 if (!mem_cfg->txfifo_size[i])
1172 continue;
1173
1174 /* Add header info */
1175 fifo_data_len += mem_cfg->txfifo_size[i] +
1176 sizeof(*dump_data) +
1177 sizeof(struct iwl_fw_error_dump_fifo);
1178 }
1179 }
1180
1181 file_len = sizeof(*dump_file) +
1182 sizeof(*dump_data) * 2 +
1183 sram_len + sizeof(*dump_mem) +
1184 fifo_data_len +
1185 sizeof(*dump_info);
1186
1187 /* Make room for the SMEM, if it exists */
1188 if (smem_len)
1189 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
1190
1191 /* Make room for the secondary SRAM, if it exists */
1192 if (sram2_len)
1193 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
1194
1195 /* If we only want a monitor dump, reset the file length */
1196 if (monitor_dump_only) {
1197 file_len = sizeof(*dump_file) + sizeof(*dump_data) +
1198 sizeof(*dump_info);
1199 }
1200
1201 /*
1202 * In 8000 HW family B-step include the ICCM (which resides separately)
1203 */
1204 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1205 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP)
1206 file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
1207 IWL8260_ICCM_LEN;
1208
1209 if (mvm->fw_dump_desc)
1210 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
1211 mvm->fw_dump_desc->len;
1212
1213 dump_file = vzalloc(file_len);
1214 if (!dump_file) {
1215 kfree(fw_error_dump);
1216 iwl_mvm_free_fw_dump_desc(mvm);
1217 return;
1218 }
1219
1220 fw_error_dump->op_mode_ptr = dump_file;
1221
1222 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
1223 dump_data = (void *)dump_file->data;
1224
1225 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
1226 dump_data->len = cpu_to_le32(sizeof(*dump_info));
1227 dump_info = (void *) dump_data->data;
1228 dump_info->device_family =
1229 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
1230 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
1231 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
1232 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
1233 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
1234 sizeof(dump_info->fw_human_readable));
1235 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1236 sizeof(dump_info->dev_human_readable));
1237 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1238 sizeof(dump_info->bus_human_readable));
1239
1240 dump_data = iwl_fw_error_next_data(dump_data);
1241 /* We only dump the FIFOs if the FW is in error state */
1242 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1243 iwl_mvm_dump_fifos(mvm, &dump_data);
1244
1245 if (mvm->fw_dump_desc) {
1246 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
1247 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
1248 mvm->fw_dump_desc->len);
1249 dump_trig = (void *)dump_data->data;
1250 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
1251 sizeof(*dump_trig) + mvm->fw_dump_desc->len);
1252
1253 /* now we can free this copy */
1254 iwl_mvm_free_fw_dump_desc(mvm);
1255 dump_data = iwl_fw_error_next_data(dump_data);
1256 }
1257
1258 /* In case we only want monitor dump, skip to dump trasport data */
1259 if (monitor_dump_only)
1260 goto dump_trans_data;
1261
1262 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1263 dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1264 dump_mem = (void *)dump_data->data;
1265 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1266 dump_mem->offset = cpu_to_le32(sram_ofs);
1267 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
1268 sram_len);
1269
1270 if (smem_len) {
1271 dump_data = iwl_fw_error_next_data(dump_data);
1272 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1273 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1274 dump_mem = (void *)dump_data->data;
1275 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1276 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
1277 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
1278 dump_mem->data, smem_len);
1279 }
1280
1281 if (sram2_len) {
1282 dump_data = iwl_fw_error_next_data(dump_data);
1283 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1284 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1285 dump_mem = (void *)dump_data->data;
1286 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1287 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1288 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1289 dump_mem->data, sram2_len);
1290 }
1291
1292 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1293 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) {
1294 dump_data = iwl_fw_error_next_data(dump_data);
1295 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1296 dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN +
1297 sizeof(*dump_mem));
1298 dump_mem = (void *)dump_data->data;
1299 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1300 dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET);
1301 iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET,
1302 dump_mem->data, IWL8260_ICCM_LEN);
1303 }
1304
1305 dump_trans_data:
1306 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans,
1307 mvm->fw_dump_trig);
1308 fw_error_dump->op_mode_len = file_len;
1309 if (fw_error_dump->trans_ptr)
1310 file_len += fw_error_dump->trans_ptr->len;
1311 dump_file->file_len = cpu_to_le32(file_len);
1312
1313 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1314 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
1315
1316 mvm->fw_dump_trig = NULL;
1317 clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
1318 }
1319
1320 struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
1321 .trig_desc = {
1322 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
1323 },
1324 };
1325
1326 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1327 {
1328 /* clear the D3 reconfig, we only need it to avoid dumping a
1329 * firmware coredump on reconfiguration, we shouldn't do that
1330 * on D3->D0 transition
1331 */
1332 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1333 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1334 iwl_mvm_fw_error_dump(mvm);
1335 }
1336
1337 /* cleanup all stale references (scan, roc), but keep the
1338 * ucode_down ref until reconfig is complete
1339 */
1340 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1341
1342 iwl_trans_stop_device(mvm->trans);
1343
1344 mvm->scan_status = 0;
1345 mvm->ps_disabled = false;
1346 mvm->calibrating = false;
1347
1348 /* just in case one was running */
1349 ieee80211_remain_on_channel_expired(mvm->hw);
1350
1351 /*
1352 * cleanup all interfaces, even inactive ones, as some might have
1353 * gone down during the HW restart
1354 */
1355 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1356
1357 mvm->p2p_device_vif = NULL;
1358 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1359
1360 iwl_mvm_reset_phy_ctxts(mvm);
1361 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1362 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1363 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1364 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1365 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1366 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1367 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1368 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1369
1370 ieee80211_wake_queues(mvm->hw);
1371
1372 /* clear any stale d0i3 state */
1373 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1374
1375 mvm->vif_count = 0;
1376 mvm->rx_ba_sessions = 0;
1377 mvm->fw_dbg_conf = FW_DBG_INVALID;
1378
1379 /* keep statistics ticking */
1380 iwl_mvm_accu_radio_stats(mvm);
1381 }
1382
1383 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1384 {
1385 int ret;
1386
1387 lockdep_assert_held(&mvm->mutex);
1388
1389 /* Clean up some internal and mac80211 state on restart */
1390 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1391 iwl_mvm_restart_cleanup(mvm);
1392
1393 ret = iwl_mvm_up(mvm);
1394
1395 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1396 /* Something went wrong - we need to finish some cleanup
1397 * that normally iwl_mvm_mac_restart_complete() below
1398 * would do.
1399 */
1400 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1401 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1402 }
1403
1404 return ret;
1405 }
1406
1407 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1408 {
1409 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1410 int ret;
1411
1412 /* Some hw restart cleanups must not hold the mutex */
1413 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1414 /*
1415 * Make sure we are out of d0i3. This is needed
1416 * to make sure the reference accounting is correct
1417 * (and there is no stale d0i3_exit_work).
1418 */
1419 wait_event_timeout(mvm->d0i3_exit_waitq,
1420 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1421 &mvm->status),
1422 HZ);
1423 }
1424
1425 mutex_lock(&mvm->mutex);
1426 ret = __iwl_mvm_mac_start(mvm);
1427 mutex_unlock(&mvm->mutex);
1428
1429 return ret;
1430 }
1431
1432 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1433 {
1434 int ret;
1435
1436 mutex_lock(&mvm->mutex);
1437
1438 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1439 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1440 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1441 if (ret)
1442 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1443 ret);
1444
1445 /* allow transport/FW low power modes */
1446 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1447
1448 /*
1449 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1450 * of packets the FW sent out, so we must reconnect.
1451 */
1452 iwl_mvm_teardown_tdls_peers(mvm);
1453
1454 mutex_unlock(&mvm->mutex);
1455 }
1456
1457 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1458 {
1459 if (!iwl_mvm_is_d0i3_supported(mvm))
1460 return;
1461
1462 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1463 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1464 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1465 &mvm->status),
1466 HZ))
1467 WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1468 }
1469
1470 static void
1471 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1472 enum ieee80211_reconfig_type reconfig_type)
1473 {
1474 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1475
1476 switch (reconfig_type) {
1477 case IEEE80211_RECONFIG_TYPE_RESTART:
1478 iwl_mvm_restart_complete(mvm);
1479 break;
1480 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1481 iwl_mvm_resume_complete(mvm);
1482 break;
1483 }
1484 }
1485
1486 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1487 {
1488 lockdep_assert_held(&mvm->mutex);
1489
1490 /* firmware counters are obviously reset now, but we shouldn't
1491 * partially track so also clear the fw_reset_accu counters.
1492 */
1493 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1494
1495 /*
1496 * Disallow low power states when the FW is down by taking
1497 * the UCODE_DOWN ref. in case of ongoing hw restart the
1498 * ref is already taken, so don't take it again.
1499 */
1500 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1501 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1502
1503 /* async_handlers_wk is now blocked */
1504
1505 /*
1506 * The work item could be running or queued if the
1507 * ROC time event stops just as we get here.
1508 */
1509 flush_work(&mvm->roc_done_wk);
1510
1511 iwl_trans_stop_device(mvm->trans);
1512
1513 iwl_mvm_async_handlers_purge(mvm);
1514 /* async_handlers_list is empty and will stay empty: HW is stopped */
1515
1516 /* the fw is stopped, the aux sta is dead: clean up driver state */
1517 iwl_mvm_del_aux_sta(mvm);
1518
1519 /*
1520 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1521 * won't be called in this case).
1522 * But make sure to cleanup interfaces that have gone down before/during
1523 * HW restart was requested.
1524 */
1525 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1526 ieee80211_iterate_interfaces(mvm->hw, 0,
1527 iwl_mvm_cleanup_iterator, mvm);
1528
1529 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1530 * make sure there's nothing left there and warn if any is found.
1531 */
1532 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1533 int i;
1534
1535 for (i = 0; i < mvm->max_scans; i++) {
1536 if (WARN_ONCE(mvm->scan_uid_status[i],
1537 "UMAC scan UID %d status was not cleaned\n",
1538 i))
1539 mvm->scan_uid_status[i] = 0;
1540 }
1541 }
1542
1543 mvm->ucode_loaded = false;
1544 }
1545
1546 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1547 {
1548 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1549
1550 flush_work(&mvm->d0i3_exit_work);
1551 flush_work(&mvm->async_handlers_wk);
1552 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1553 iwl_mvm_free_fw_dump_desc(mvm);
1554
1555 mutex_lock(&mvm->mutex);
1556 __iwl_mvm_mac_stop(mvm);
1557 mutex_unlock(&mvm->mutex);
1558
1559 /*
1560 * The worker might have been waiting for the mutex, let it run and
1561 * discover that its list is now empty.
1562 */
1563 cancel_work_sync(&mvm->async_handlers_wk);
1564 }
1565
1566 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1567 {
1568 u16 i;
1569
1570 lockdep_assert_held(&mvm->mutex);
1571
1572 for (i = 0; i < NUM_PHY_CTX; i++)
1573 if (!mvm->phy_ctxts[i].ref)
1574 return &mvm->phy_ctxts[i];
1575
1576 IWL_ERR(mvm, "No available PHY context\n");
1577 return NULL;
1578 }
1579
1580 static int iwl_mvm_set_tx_power_old(struct iwl_mvm *mvm,
1581 struct ieee80211_vif *vif, s8 tx_power)
1582 {
1583 /* FW is in charge of regulatory enforcement */
1584 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1585 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1586 .pwr_restriction = cpu_to_le16(tx_power),
1587 };
1588
1589 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1590 sizeof(reduce_txpwr_cmd),
1591 &reduce_txpwr_cmd);
1592 }
1593
1594 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1595 s16 tx_power)
1596 {
1597 struct iwl_dev_tx_power_cmd cmd = {
1598 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1599 .v2.mac_context_id =
1600 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1601 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1602 };
1603 int len = sizeof(cmd);
1604
1605 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_DEV))
1606 return iwl_mvm_set_tx_power_old(mvm, vif, tx_power);
1607
1608 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1609 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1610
1611 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1612 len = sizeof(cmd.v2);
1613
1614 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1615 }
1616
1617 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1618 struct ieee80211_vif *vif)
1619 {
1620 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1621 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1622 int ret;
1623
1624 mvmvif->mvm = mvm;
1625
1626 /*
1627 * make sure D0i3 exit is completed, otherwise a target access
1628 * during tx queue configuration could be done when still in
1629 * D0i3 state.
1630 */
1631 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1632 if (ret)
1633 return ret;
1634
1635 /*
1636 * Not much to do here. The stack will not allow interface
1637 * types or combinations that we didn't advertise, so we
1638 * don't really have to check the types.
1639 */
1640
1641 mutex_lock(&mvm->mutex);
1642
1643 /* make sure that beacon statistics don't go backwards with FW reset */
1644 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1645 mvmvif->beacon_stats.accu_num_beacons +=
1646 mvmvif->beacon_stats.num_beacons;
1647
1648 /* Allocate resources for the MAC context, and add it to the fw */
1649 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1650 if (ret)
1651 goto out_unlock;
1652
1653 /* Counting number of interfaces is needed for legacy PM */
1654 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1655 mvm->vif_count++;
1656
1657 /*
1658 * The AP binding flow can be done only after the beacon
1659 * template is configured (which happens only in the mac80211
1660 * start_ap() flow), and adding the broadcast station can happen
1661 * only after the binding.
1662 * In addition, since modifying the MAC before adding a bcast
1663 * station is not allowed by the FW, delay the adding of MAC context to
1664 * the point where we can also add the bcast station.
1665 * In short: there's not much we can do at this point, other than
1666 * allocating resources :)
1667 */
1668 if (vif->type == NL80211_IFTYPE_AP ||
1669 vif->type == NL80211_IFTYPE_ADHOC) {
1670 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1671 if (ret) {
1672 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1673 goto out_release;
1674 }
1675
1676 iwl_mvm_vif_dbgfs_register(mvm, vif);
1677 goto out_unlock;
1678 }
1679
1680 mvmvif->features |= hw->netdev_features;
1681
1682 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1683 if (ret)
1684 goto out_release;
1685
1686 ret = iwl_mvm_power_update_mac(mvm);
1687 if (ret)
1688 goto out_remove_mac;
1689
1690 /* beacon filtering */
1691 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1692 if (ret)
1693 goto out_remove_mac;
1694
1695 if (!mvm->bf_allowed_vif &&
1696 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1697 mvm->bf_allowed_vif = mvmvif;
1698 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1699 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1700 }
1701
1702 /*
1703 * P2P_DEVICE interface does not have a channel context assigned to it,
1704 * so a dedicated PHY context is allocated to it and the corresponding
1705 * MAC context is bound to it at this stage.
1706 */
1707 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1708
1709 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1710 if (!mvmvif->phy_ctxt) {
1711 ret = -ENOSPC;
1712 goto out_free_bf;
1713 }
1714
1715 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1716 ret = iwl_mvm_binding_add_vif(mvm, vif);
1717 if (ret)
1718 goto out_unref_phy;
1719
1720 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1721 if (ret)
1722 goto out_unbind;
1723
1724 /* Save a pointer to p2p device vif, so it can later be used to
1725 * update the p2p device MAC when a GO is started/stopped */
1726 mvm->p2p_device_vif = vif;
1727 }
1728
1729 iwl_mvm_vif_dbgfs_register(mvm, vif);
1730 goto out_unlock;
1731
1732 out_unbind:
1733 iwl_mvm_binding_remove_vif(mvm, vif);
1734 out_unref_phy:
1735 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1736 out_free_bf:
1737 if (mvm->bf_allowed_vif == mvmvif) {
1738 mvm->bf_allowed_vif = NULL;
1739 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1740 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1741 }
1742 out_remove_mac:
1743 mvmvif->phy_ctxt = NULL;
1744 iwl_mvm_mac_ctxt_remove(mvm, vif);
1745 out_release:
1746 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1747 mvm->vif_count--;
1748
1749 iwl_mvm_mac_ctxt_release(mvm, vif);
1750 out_unlock:
1751 mutex_unlock(&mvm->mutex);
1752
1753 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1754
1755 return ret;
1756 }
1757
1758 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1759 struct ieee80211_vif *vif)
1760 {
1761 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1762
1763 if (tfd_msk) {
1764 /*
1765 * mac80211 first removes all the stations of the vif and
1766 * then removes the vif. When it removes a station it also
1767 * flushes the AMPDU session. So by now, all the AMPDU sessions
1768 * of all the stations of this vif are closed, and the queues
1769 * of these AMPDU sessions are properly closed.
1770 * We still need to take care of the shared queues of the vif.
1771 * Flush them here.
1772 */
1773 mutex_lock(&mvm->mutex);
1774 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1775 mutex_unlock(&mvm->mutex);
1776
1777 /*
1778 * There are transports that buffer a few frames in the host.
1779 * For these, the flush above isn't enough since while we were
1780 * flushing, the transport might have sent more frames to the
1781 * device. To solve this, wait here until the transport is
1782 * empty. Technically, this could have replaced the flush
1783 * above, but flush is much faster than draining. So flush
1784 * first, and drain to make sure we have no frames in the
1785 * transport anymore.
1786 * If a station still had frames on the shared queues, it is
1787 * already marked as draining, so to complete the draining, we
1788 * just need to wait until the transport is empty.
1789 */
1790 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1791 }
1792
1793 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1794 /*
1795 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1796 * We assume here that all the packets sent to the OFFCHANNEL
1797 * queue are sent in ROC session.
1798 */
1799 flush_work(&mvm->roc_done_wk);
1800 } else {
1801 /*
1802 * By now, all the AC queues are empty. The AGG queues are
1803 * empty too. We already got all the Tx responses for all the
1804 * packets in the queues. The drain work can have been
1805 * triggered. Flush it.
1806 */
1807 flush_work(&mvm->sta_drained_wk);
1808 }
1809 }
1810
1811 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1812 struct ieee80211_vif *vif)
1813 {
1814 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1815 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1816
1817 iwl_mvm_prepare_mac_removal(mvm, vif);
1818
1819 mutex_lock(&mvm->mutex);
1820
1821 if (mvm->bf_allowed_vif == mvmvif) {
1822 mvm->bf_allowed_vif = NULL;
1823 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1824 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1825 }
1826
1827 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1828
1829 /*
1830 * For AP/GO interface, the tear down of the resources allocated to the
1831 * interface is be handled as part of the stop_ap flow.
1832 */
1833 if (vif->type == NL80211_IFTYPE_AP ||
1834 vif->type == NL80211_IFTYPE_ADHOC) {
1835 #ifdef CONFIG_NL80211_TESTMODE
1836 if (vif == mvm->noa_vif) {
1837 mvm->noa_vif = NULL;
1838 mvm->noa_duration = 0;
1839 }
1840 #endif
1841 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1842 goto out_release;
1843 }
1844
1845 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1846 mvm->p2p_device_vif = NULL;
1847 iwl_mvm_rm_bcast_sta(mvm, vif);
1848 iwl_mvm_binding_remove_vif(mvm, vif);
1849 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1850 mvmvif->phy_ctxt = NULL;
1851 }
1852
1853 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1854 mvm->vif_count--;
1855
1856 iwl_mvm_power_update_mac(mvm);
1857 iwl_mvm_mac_ctxt_remove(mvm, vif);
1858
1859 out_release:
1860 iwl_mvm_mac_ctxt_release(mvm, vif);
1861 mutex_unlock(&mvm->mutex);
1862 }
1863
1864 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1865 {
1866 return 0;
1867 }
1868
1869 struct iwl_mvm_mc_iter_data {
1870 struct iwl_mvm *mvm;
1871 int port_id;
1872 };
1873
1874 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1875 struct ieee80211_vif *vif)
1876 {
1877 struct iwl_mvm_mc_iter_data *data = _data;
1878 struct iwl_mvm *mvm = data->mvm;
1879 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1880 int ret, len;
1881
1882 /* if we don't have free ports, mcast frames will be dropped */
1883 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1884 return;
1885
1886 if (vif->type != NL80211_IFTYPE_STATION ||
1887 !vif->bss_conf.assoc)
1888 return;
1889
1890 cmd->port_id = data->port_id++;
1891 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1892 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1893
1894 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1895 if (ret)
1896 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1897 }
1898
1899 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1900 {
1901 struct iwl_mvm_mc_iter_data iter_data = {
1902 .mvm = mvm,
1903 };
1904
1905 lockdep_assert_held(&mvm->mutex);
1906
1907 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1908 return;
1909
1910 ieee80211_iterate_active_interfaces_atomic(
1911 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1912 iwl_mvm_mc_iface_iterator, &iter_data);
1913 }
1914
1915 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1916 struct netdev_hw_addr_list *mc_list)
1917 {
1918 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1919 struct iwl_mcast_filter_cmd *cmd;
1920 struct netdev_hw_addr *addr;
1921 int addr_count;
1922 bool pass_all;
1923 int len;
1924
1925 addr_count = netdev_hw_addr_list_count(mc_list);
1926 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1927 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1928 if (pass_all)
1929 addr_count = 0;
1930
1931 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1932 cmd = kzalloc(len, GFP_ATOMIC);
1933 if (!cmd)
1934 return 0;
1935
1936 if (pass_all) {
1937 cmd->pass_all = 1;
1938 return (u64)(unsigned long)cmd;
1939 }
1940
1941 netdev_hw_addr_list_for_each(addr, mc_list) {
1942 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1943 cmd->count, addr->addr);
1944 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1945 addr->addr, ETH_ALEN);
1946 cmd->count++;
1947 }
1948
1949 return (u64)(unsigned long)cmd;
1950 }
1951
1952 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1953 unsigned int changed_flags,
1954 unsigned int *total_flags,
1955 u64 multicast)
1956 {
1957 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1958 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1959
1960 mutex_lock(&mvm->mutex);
1961
1962 /* replace previous configuration */
1963 kfree(mvm->mcast_filter_cmd);
1964 mvm->mcast_filter_cmd = cmd;
1965
1966 if (!cmd)
1967 goto out;
1968
1969 iwl_mvm_recalc_multicast(mvm);
1970 out:
1971 mutex_unlock(&mvm->mutex);
1972 *total_flags = 0;
1973 }
1974
1975 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1976 struct iwl_bcast_iter_data {
1977 struct iwl_mvm *mvm;
1978 struct iwl_bcast_filter_cmd *cmd;
1979 u8 current_filter;
1980 };
1981
1982 static void
1983 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1984 const struct iwl_fw_bcast_filter *in_filter,
1985 struct iwl_fw_bcast_filter *out_filter)
1986 {
1987 struct iwl_fw_bcast_filter_attr *attr;
1988 int i;
1989
1990 memcpy(out_filter, in_filter, sizeof(*out_filter));
1991
1992 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1993 attr = &out_filter->attrs[i];
1994
1995 if (!attr->mask)
1996 break;
1997
1998 switch (attr->reserved1) {
1999 case cpu_to_le16(BC_FILTER_MAGIC_IP):
2000 if (vif->bss_conf.arp_addr_cnt != 1) {
2001 attr->mask = 0;
2002 continue;
2003 }
2004
2005 attr->val = vif->bss_conf.arp_addr_list[0];
2006 break;
2007 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
2008 attr->val = *(__be32 *)&vif->addr[2];
2009 break;
2010 default:
2011 break;
2012 }
2013 attr->reserved1 = 0;
2014 out_filter->num_attrs++;
2015 }
2016 }
2017
2018 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
2019 struct ieee80211_vif *vif)
2020 {
2021 struct iwl_bcast_iter_data *data = _data;
2022 struct iwl_mvm *mvm = data->mvm;
2023 struct iwl_bcast_filter_cmd *cmd = data->cmd;
2024 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2025 struct iwl_fw_bcast_mac *bcast_mac;
2026 int i;
2027
2028 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
2029 return;
2030
2031 bcast_mac = &cmd->macs[mvmvif->id];
2032
2033 /*
2034 * enable filtering only for associated stations, but not for P2P
2035 * Clients
2036 */
2037 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
2038 !vif->bss_conf.assoc)
2039 return;
2040
2041 bcast_mac->default_discard = 1;
2042
2043 /* copy all configured filters */
2044 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
2045 /*
2046 * Make sure we don't exceed our filters limit.
2047 * if there is still a valid filter to be configured,
2048 * be on the safe side and just allow bcast for this mac.
2049 */
2050 if (WARN_ON_ONCE(data->current_filter >=
2051 ARRAY_SIZE(cmd->filters))) {
2052 bcast_mac->default_discard = 0;
2053 bcast_mac->attached_filters = 0;
2054 break;
2055 }
2056
2057 iwl_mvm_set_bcast_filter(vif,
2058 &mvm->bcast_filters[i],
2059 &cmd->filters[data->current_filter]);
2060
2061 /* skip current filter if it contains no attributes */
2062 if (!cmd->filters[data->current_filter].num_attrs)
2063 continue;
2064
2065 /* attach the filter to current mac */
2066 bcast_mac->attached_filters |=
2067 cpu_to_le16(BIT(data->current_filter));
2068
2069 data->current_filter++;
2070 }
2071 }
2072
2073 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
2074 struct iwl_bcast_filter_cmd *cmd)
2075 {
2076 struct iwl_bcast_iter_data iter_data = {
2077 .mvm = mvm,
2078 .cmd = cmd,
2079 };
2080
2081 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
2082 return false;
2083
2084 memset(cmd, 0, sizeof(*cmd));
2085 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
2086 cmd->max_macs = ARRAY_SIZE(cmd->macs);
2087
2088 #ifdef CONFIG_IWLWIFI_DEBUGFS
2089 /* use debugfs filters/macs if override is configured */
2090 if (mvm->dbgfs_bcast_filtering.override) {
2091 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
2092 sizeof(cmd->filters));
2093 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
2094 sizeof(cmd->macs));
2095 return true;
2096 }
2097 #endif
2098
2099 /* if no filters are configured, do nothing */
2100 if (!mvm->bcast_filters)
2101 return false;
2102
2103 /* configure and attach these filters for each associated sta vif */
2104 ieee80211_iterate_active_interfaces(
2105 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2106 iwl_mvm_bcast_filter_iterator, &iter_data);
2107
2108 return true;
2109 }
2110 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2111 struct ieee80211_vif *vif)
2112 {
2113 struct iwl_bcast_filter_cmd cmd;
2114
2115 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
2116 return 0;
2117
2118 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
2119 return 0;
2120
2121 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
2122 sizeof(cmd), &cmd);
2123 }
2124 #else
2125 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2126 struct ieee80211_vif *vif)
2127 {
2128 return 0;
2129 }
2130 #endif
2131
2132 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2133 struct ieee80211_vif *vif,
2134 struct ieee80211_bss_conf *bss_conf,
2135 u32 changes)
2136 {
2137 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2138 int ret;
2139
2140 /*
2141 * Re-calculate the tsf id, as the master-slave relations depend on the
2142 * beacon interval, which was not known when the station interface was
2143 * added.
2144 */
2145 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
2146 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2147
2148 /*
2149 * If we're not associated yet, take the (new) BSSID before associating
2150 * so the firmware knows. If we're already associated, then use the old
2151 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2152 * branch for disassociation below.
2153 */
2154 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2155 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2156
2157 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2158 if (ret)
2159 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2160
2161 /* after sending it once, adopt mac80211 data */
2162 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2163 mvmvif->associated = bss_conf->assoc;
2164
2165 if (changes & BSS_CHANGED_ASSOC) {
2166 if (bss_conf->assoc) {
2167 /* clear statistics to get clean beacon counter */
2168 iwl_mvm_request_statistics(mvm, true);
2169 memset(&mvmvif->beacon_stats, 0,
2170 sizeof(mvmvif->beacon_stats));
2171
2172 /* add quota for this interface */
2173 ret = iwl_mvm_update_quotas(mvm, true, NULL);
2174 if (ret) {
2175 IWL_ERR(mvm, "failed to update quotas\n");
2176 return;
2177 }
2178
2179 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2180 &mvm->status)) {
2181 /*
2182 * If we're restarting then the firmware will
2183 * obviously have lost synchronisation with
2184 * the AP. It will attempt to synchronise by
2185 * itself, but we can make it more reliable by
2186 * scheduling a session protection time event.
2187 *
2188 * The firmware needs to receive a beacon to
2189 * catch up with synchronisation, use 110% of
2190 * the beacon interval.
2191 *
2192 * Set a large maximum delay to allow for more
2193 * than a single interface.
2194 */
2195 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2196 iwl_mvm_protect_session(mvm, vif, dur, dur,
2197 5 * dur, false);
2198 }
2199
2200 iwl_mvm_sf_update(mvm, vif, false);
2201 iwl_mvm_power_vif_assoc(mvm, vif);
2202 if (vif->p2p) {
2203 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2204 iwl_mvm_update_smps(mvm, vif,
2205 IWL_MVM_SMPS_REQ_PROT,
2206 IEEE80211_SMPS_DYNAMIC);
2207 }
2208 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2209 /*
2210 * If update fails - SF might be running in associated
2211 * mode while disassociated - which is forbidden.
2212 */
2213 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2214 "Failed to update SF upon disassociation\n");
2215
2216 /* remove AP station now that the MAC is unassoc */
2217 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
2218 if (ret)
2219 IWL_ERR(mvm, "failed to remove AP station\n");
2220
2221 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2222 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
2223 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
2224 /* remove quota for this interface */
2225 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2226 if (ret)
2227 IWL_ERR(mvm, "failed to update quotas\n");
2228
2229 if (vif->p2p)
2230 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2231
2232 /* this will take the cleared BSSID from bss_conf */
2233 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2234 if (ret)
2235 IWL_ERR(mvm,
2236 "failed to update MAC %pM (clear after unassoc)\n",
2237 vif->addr);
2238 }
2239
2240 iwl_mvm_recalc_multicast(mvm);
2241 iwl_mvm_configure_bcast_filter(mvm, vif);
2242
2243 /* reset rssi values */
2244 mvmvif->bf_data.ave_beacon_signal = 0;
2245
2246 iwl_mvm_bt_coex_vif_change(mvm);
2247 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2248 IEEE80211_SMPS_AUTOMATIC);
2249 } else if (changes & BSS_CHANGED_BEACON_INFO) {
2250 /*
2251 * We received a beacon _after_ association so
2252 * remove the session protection.
2253 */
2254 iwl_mvm_remove_time_event(mvm, mvmvif,
2255 &mvmvif->time_event_data);
2256 }
2257
2258 if (changes & BSS_CHANGED_BEACON_INFO) {
2259 iwl_mvm_sf_update(mvm, vif, false);
2260 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2261 }
2262
2263 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
2264 ret = iwl_mvm_power_update_mac(mvm);
2265 if (ret)
2266 IWL_ERR(mvm, "failed to update power mode\n");
2267 }
2268
2269 if (changes & BSS_CHANGED_TXPOWER) {
2270 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2271 bss_conf->txpower);
2272 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2273 }
2274
2275 if (changes & BSS_CHANGED_CQM) {
2276 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2277 /* reset cqm events tracking */
2278 mvmvif->bf_data.last_cqm_event = 0;
2279 if (mvmvif->bf_data.bf_enabled) {
2280 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2281 if (ret)
2282 IWL_ERR(mvm,
2283 "failed to update CQM thresholds\n");
2284 }
2285 }
2286
2287 if (changes & BSS_CHANGED_ARP_FILTER) {
2288 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2289 iwl_mvm_configure_bcast_filter(mvm, vif);
2290 }
2291 }
2292
2293 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2294 struct ieee80211_vif *vif)
2295 {
2296 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2297 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2298 int ret;
2299
2300 /*
2301 * iwl_mvm_mac_ctxt_add() might read directly from the device
2302 * (the system time), so make sure it is available.
2303 */
2304 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2305 if (ret)
2306 return ret;
2307
2308 mutex_lock(&mvm->mutex);
2309
2310 /* Send the beacon template */
2311 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2312 if (ret)
2313 goto out_unlock;
2314
2315 /*
2316 * Re-calculate the tsf id, as the master-slave relations depend on the
2317 * beacon interval, which was not known when the AP interface was added.
2318 */
2319 if (vif->type == NL80211_IFTYPE_AP)
2320 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2321
2322 /* Add the mac context */
2323 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2324 if (ret)
2325 goto out_unlock;
2326
2327 /* Perform the binding */
2328 ret = iwl_mvm_binding_add_vif(mvm, vif);
2329 if (ret)
2330 goto out_remove;
2331
2332 /* Send the bcast station. At this stage the TBTT and DTIM time events
2333 * are added and applied to the scheduler */
2334 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2335 if (ret)
2336 goto out_unbind;
2337
2338 /* must be set before quota calculations */
2339 mvmvif->ap_ibss_active = true;
2340
2341 /* power updated needs to be done before quotas */
2342 iwl_mvm_power_update_mac(mvm);
2343
2344 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2345 if (ret)
2346 goto out_quota_failed;
2347
2348 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2349 if (vif->p2p && mvm->p2p_device_vif)
2350 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2351
2352 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2353
2354 iwl_mvm_bt_coex_vif_change(mvm);
2355
2356 /* we don't support TDLS during DCM */
2357 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2358 iwl_mvm_teardown_tdls_peers(mvm);
2359
2360 goto out_unlock;
2361
2362 out_quota_failed:
2363 iwl_mvm_power_update_mac(mvm);
2364 mvmvif->ap_ibss_active = false;
2365 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2366 out_unbind:
2367 iwl_mvm_binding_remove_vif(mvm, vif);
2368 out_remove:
2369 iwl_mvm_mac_ctxt_remove(mvm, vif);
2370 out_unlock:
2371 mutex_unlock(&mvm->mutex);
2372 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2373 return ret;
2374 }
2375
2376 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2377 struct ieee80211_vif *vif)
2378 {
2379 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2380 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2381
2382 iwl_mvm_prepare_mac_removal(mvm, vif);
2383
2384 mutex_lock(&mvm->mutex);
2385
2386 /* Handle AP stop while in CSA */
2387 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2388 iwl_mvm_remove_time_event(mvm, mvmvif,
2389 &mvmvif->time_event_data);
2390 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2391 }
2392
2393 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2394 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2395 mvm->csa_tx_block_bcn_timeout = 0;
2396 }
2397
2398 mvmvif->ap_ibss_active = false;
2399 mvm->ap_last_beacon_gp2 = 0;
2400
2401 iwl_mvm_bt_coex_vif_change(mvm);
2402
2403 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2404
2405 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2406 if (vif->p2p && mvm->p2p_device_vif)
2407 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2408
2409 iwl_mvm_update_quotas(mvm, false, NULL);
2410 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2411 iwl_mvm_binding_remove_vif(mvm, vif);
2412
2413 iwl_mvm_power_update_mac(mvm);
2414
2415 iwl_mvm_mac_ctxt_remove(mvm, vif);
2416
2417 mutex_unlock(&mvm->mutex);
2418 }
2419
2420 static void
2421 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2422 struct ieee80211_vif *vif,
2423 struct ieee80211_bss_conf *bss_conf,
2424 u32 changes)
2425 {
2426 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2427
2428 /* Changes will be applied when the AP/IBSS is started */
2429 if (!mvmvif->ap_ibss_active)
2430 return;
2431
2432 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2433 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2434 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2435 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2436
2437 /* Need to send a new beacon template to the FW */
2438 if (changes & BSS_CHANGED_BEACON &&
2439 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2440 IWL_WARN(mvm, "Failed updating beacon data\n");
2441
2442 if (changes & BSS_CHANGED_TXPOWER) {
2443 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2444 bss_conf->txpower);
2445 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2446 }
2447
2448 }
2449
2450 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2451 struct ieee80211_vif *vif,
2452 struct ieee80211_bss_conf *bss_conf,
2453 u32 changes)
2454 {
2455 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2456
2457 /*
2458 * iwl_mvm_bss_info_changed_station() might call
2459 * iwl_mvm_protect_session(), which reads directly from
2460 * the device (the system time), so make sure it is available.
2461 */
2462 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2463 return;
2464
2465 mutex_lock(&mvm->mutex);
2466
2467 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2468 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2469
2470 switch (vif->type) {
2471 case NL80211_IFTYPE_STATION:
2472 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2473 break;
2474 case NL80211_IFTYPE_AP:
2475 case NL80211_IFTYPE_ADHOC:
2476 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2477 break;
2478 default:
2479 /* shouldn't happen */
2480 WARN_ON_ONCE(1);
2481 }
2482
2483 mutex_unlock(&mvm->mutex);
2484 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2485 }
2486
2487 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2488 struct ieee80211_vif *vif,
2489 struct ieee80211_scan_request *hw_req)
2490 {
2491 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2492 int ret;
2493
2494 if (hw_req->req.n_channels == 0 ||
2495 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2496 return -EINVAL;
2497
2498 mutex_lock(&mvm->mutex);
2499 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2500 mutex_unlock(&mvm->mutex);
2501
2502 return ret;
2503 }
2504
2505 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2506 struct ieee80211_vif *vif)
2507 {
2508 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2509
2510 mutex_lock(&mvm->mutex);
2511
2512 /* Due to a race condition, it's possible that mac80211 asks
2513 * us to stop a hw_scan when it's already stopped. This can
2514 * happen, for instance, if we stopped the scan ourselves,
2515 * called ieee80211_scan_completed() and the userspace called
2516 * cancel scan scan before ieee80211_scan_work() could run.
2517 * To handle that, simply return if the scan is not running.
2518 */
2519 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2520 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2521
2522 mutex_unlock(&mvm->mutex);
2523 }
2524
2525 static void
2526 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2527 struct ieee80211_sta *sta, u16 tids,
2528 int num_frames,
2529 enum ieee80211_frame_release_type reason,
2530 bool more_data)
2531 {
2532 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2533
2534 /* Called when we need to transmit (a) frame(s) from mac80211 */
2535
2536 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2537 tids, more_data, false);
2538 }
2539
2540 static void
2541 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2542 struct ieee80211_sta *sta, u16 tids,
2543 int num_frames,
2544 enum ieee80211_frame_release_type reason,
2545 bool more_data)
2546 {
2547 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2548
2549 /* Called when we need to transmit (a) frame(s) from agg queue */
2550
2551 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2552 tids, more_data, true);
2553 }
2554
2555 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2556 struct ieee80211_vif *vif,
2557 enum sta_notify_cmd cmd,
2558 struct ieee80211_sta *sta)
2559 {
2560 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2561 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2562 unsigned long txqs = 0, tids = 0;
2563 int tid;
2564
2565 spin_lock_bh(&mvmsta->lock);
2566 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2567 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2568
2569 if (tid_data->state != IWL_AGG_ON &&
2570 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2571 continue;
2572
2573 __set_bit(tid_data->txq_id, &txqs);
2574
2575 if (iwl_mvm_tid_queued(tid_data) == 0)
2576 continue;
2577
2578 __set_bit(tid, &tids);
2579 }
2580
2581 switch (cmd) {
2582 case STA_NOTIFY_SLEEP:
2583 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2584 ieee80211_sta_block_awake(hw, sta, true);
2585
2586 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2587 ieee80211_sta_set_buffered(sta, tid, true);
2588
2589 if (txqs)
2590 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2591 /*
2592 * The fw updates the STA to be asleep. Tx packets on the Tx
2593 * queues to this station will not be transmitted. The fw will
2594 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2595 */
2596 break;
2597 case STA_NOTIFY_AWAKE:
2598 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2599 break;
2600
2601 if (txqs)
2602 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2603 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2604 break;
2605 default:
2606 break;
2607 }
2608 spin_unlock_bh(&mvmsta->lock);
2609 }
2610
2611 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2612 struct ieee80211_vif *vif,
2613 struct ieee80211_sta *sta)
2614 {
2615 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2616 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2617
2618 /*
2619 * This is called before mac80211 does RCU synchronisation,
2620 * so here we already invalidate our internal RCU-protected
2621 * station pointer. The rest of the code will thus no longer
2622 * be able to find the station this way, and we don't rely
2623 * on further RCU synchronisation after the sta_state()
2624 * callback deleted the station.
2625 */
2626 mutex_lock(&mvm->mutex);
2627 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2628 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2629 ERR_PTR(-ENOENT));
2630 mutex_unlock(&mvm->mutex);
2631 }
2632
2633 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2634 const u8 *bssid)
2635 {
2636 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2637 return;
2638
2639 if (iwlwifi_mod_params.uapsd_disable) {
2640 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2641 return;
2642 }
2643
2644 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2645 }
2646
2647 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2648 struct ieee80211_vif *vif,
2649 struct ieee80211_sta *sta,
2650 enum ieee80211_sta_state old_state,
2651 enum ieee80211_sta_state new_state)
2652 {
2653 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2654 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2655 int ret;
2656
2657 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2658 sta->addr, old_state, new_state);
2659
2660 /* this would be a mac80211 bug ... but don't crash */
2661 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2662 return -EINVAL;
2663
2664 /* if a STA is being removed, reuse its ID */
2665 flush_work(&mvm->sta_drained_wk);
2666
2667 mutex_lock(&mvm->mutex);
2668 if (old_state == IEEE80211_STA_NOTEXIST &&
2669 new_state == IEEE80211_STA_NONE) {
2670 /*
2671 * Firmware bug - it'll crash if the beacon interval is less
2672 * than 16. We can't avoid connecting at all, so refuse the
2673 * station state change, this will cause mac80211 to abandon
2674 * attempts to connect to this AP, and eventually wpa_s will
2675 * blacklist the AP...
2676 */
2677 if (vif->type == NL80211_IFTYPE_STATION &&
2678 vif->bss_conf.beacon_int < 16) {
2679 IWL_ERR(mvm,
2680 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2681 sta->addr, vif->bss_conf.beacon_int);
2682 ret = -EINVAL;
2683 goto out_unlock;
2684 }
2685
2686 if (sta->tdls &&
2687 (vif->p2p ||
2688 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2689 IWL_MVM_TDLS_STA_COUNT ||
2690 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2691 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2692 ret = -EBUSY;
2693 goto out_unlock;
2694 }
2695
2696 ret = iwl_mvm_add_sta(mvm, vif, sta);
2697 if (sta->tdls && ret == 0)
2698 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2699 } else if (old_state == IEEE80211_STA_NONE &&
2700 new_state == IEEE80211_STA_AUTH) {
2701 /*
2702 * EBS may be disabled due to previous failures reported by FW.
2703 * Reset EBS status here assuming environment has been changed.
2704 */
2705 mvm->last_ebs_successful = true;
2706 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2707 ret = 0;
2708 } else if (old_state == IEEE80211_STA_AUTH &&
2709 new_state == IEEE80211_STA_ASSOC) {
2710 ret = iwl_mvm_update_sta(mvm, vif, sta);
2711 if (ret == 0)
2712 iwl_mvm_rs_rate_init(mvm, sta,
2713 mvmvif->phy_ctxt->channel->band,
2714 true);
2715 } else if (old_state == IEEE80211_STA_ASSOC &&
2716 new_state == IEEE80211_STA_AUTHORIZED) {
2717
2718 /* we don't support TDLS during DCM */
2719 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2720 iwl_mvm_teardown_tdls_peers(mvm);
2721
2722 /* enable beacon filtering */
2723 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2724 ret = 0;
2725 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2726 new_state == IEEE80211_STA_ASSOC) {
2727 /* disable beacon filtering */
2728 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2729 ret = 0;
2730 } else if (old_state == IEEE80211_STA_ASSOC &&
2731 new_state == IEEE80211_STA_AUTH) {
2732 ret = 0;
2733 } else if (old_state == IEEE80211_STA_AUTH &&
2734 new_state == IEEE80211_STA_NONE) {
2735 ret = 0;
2736 } else if (old_state == IEEE80211_STA_NONE &&
2737 new_state == IEEE80211_STA_NOTEXIST) {
2738 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2739 if (sta->tdls)
2740 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2741 } else {
2742 ret = -EIO;
2743 }
2744 out_unlock:
2745 mutex_unlock(&mvm->mutex);
2746
2747 if (sta->tdls && ret == 0) {
2748 if (old_state == IEEE80211_STA_NOTEXIST &&
2749 new_state == IEEE80211_STA_NONE)
2750 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2751 else if (old_state == IEEE80211_STA_NONE &&
2752 new_state == IEEE80211_STA_NOTEXIST)
2753 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2754 }
2755
2756 return ret;
2757 }
2758
2759 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2760 {
2761 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2762
2763 mvm->rts_threshold = value;
2764
2765 return 0;
2766 }
2767
2768 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2769 struct ieee80211_vif *vif,
2770 struct ieee80211_sta *sta, u32 changed)
2771 {
2772 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2773
2774 if (vif->type == NL80211_IFTYPE_STATION &&
2775 changed & IEEE80211_RC_NSS_CHANGED)
2776 iwl_mvm_sf_update(mvm, vif, false);
2777 }
2778
2779 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2780 struct ieee80211_vif *vif, u16 ac,
2781 const struct ieee80211_tx_queue_params *params)
2782 {
2783 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2784 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2785
2786 mvmvif->queue_params[ac] = *params;
2787
2788 /*
2789 * No need to update right away, we'll get BSS_CHANGED_QOS
2790 * The exception is P2P_DEVICE interface which needs immediate update.
2791 */
2792 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2793 int ret;
2794
2795 mutex_lock(&mvm->mutex);
2796 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2797 mutex_unlock(&mvm->mutex);
2798 return ret;
2799 }
2800 return 0;
2801 }
2802
2803 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2804 struct ieee80211_vif *vif)
2805 {
2806 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2807 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2808 200 + vif->bss_conf.beacon_int);
2809 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2810 100 + vif->bss_conf.beacon_int);
2811
2812 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2813 return;
2814
2815 /*
2816 * iwl_mvm_protect_session() reads directly from the device
2817 * (the system time), so make sure it is available.
2818 */
2819 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2820 return;
2821
2822 mutex_lock(&mvm->mutex);
2823 /* Try really hard to protect the session and hear a beacon */
2824 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2825 mutex_unlock(&mvm->mutex);
2826
2827 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2828 }
2829
2830 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2831 struct ieee80211_vif *vif,
2832 struct cfg80211_sched_scan_request *req,
2833 struct ieee80211_scan_ies *ies)
2834 {
2835 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2836
2837 int ret;
2838
2839 mutex_lock(&mvm->mutex);
2840
2841 if (!vif->bss_conf.idle) {
2842 ret = -EBUSY;
2843 goto out;
2844 }
2845
2846 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2847
2848 out:
2849 mutex_unlock(&mvm->mutex);
2850 return ret;
2851 }
2852
2853 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2854 struct ieee80211_vif *vif)
2855 {
2856 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2857 int ret;
2858
2859 mutex_lock(&mvm->mutex);
2860
2861 /* Due to a race condition, it's possible that mac80211 asks
2862 * us to stop a sched_scan when it's already stopped. This
2863 * can happen, for instance, if we stopped the scan ourselves,
2864 * called ieee80211_sched_scan_stopped() and the userspace called
2865 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2866 * could run. To handle this, simply return if the scan is
2867 * not running.
2868 */
2869 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2870 mutex_unlock(&mvm->mutex);
2871 return 0;
2872 }
2873
2874 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2875 mutex_unlock(&mvm->mutex);
2876 iwl_mvm_wait_for_async_handlers(mvm);
2877
2878 return ret;
2879 }
2880
2881 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2882 enum set_key_cmd cmd,
2883 struct ieee80211_vif *vif,
2884 struct ieee80211_sta *sta,
2885 struct ieee80211_key_conf *key)
2886 {
2887 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2888 int ret;
2889
2890 if (iwlwifi_mod_params.sw_crypto) {
2891 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2892 return -EOPNOTSUPP;
2893 }
2894
2895 switch (key->cipher) {
2896 case WLAN_CIPHER_SUITE_TKIP:
2897 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2898 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2899 break;
2900 case WLAN_CIPHER_SUITE_CCMP:
2901 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2902 break;
2903 case WLAN_CIPHER_SUITE_AES_CMAC:
2904 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2905 break;
2906 case WLAN_CIPHER_SUITE_WEP40:
2907 case WLAN_CIPHER_SUITE_WEP104:
2908 /* For non-client mode, only use WEP keys for TX as we probably
2909 * don't have a station yet anyway and would then have to keep
2910 * track of the keys, linking them to each of the clients/peers
2911 * as they appear. For now, don't do that, for performance WEP
2912 * offload doesn't really matter much, but we need it for some
2913 * other offload features in client mode.
2914 */
2915 if (vif->type != NL80211_IFTYPE_STATION)
2916 return 0;
2917 break;
2918 default:
2919 /* currently FW supports only one optional cipher scheme */
2920 if (hw->n_cipher_schemes &&
2921 hw->cipher_schemes->cipher == key->cipher)
2922 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2923 else
2924 return -EOPNOTSUPP;
2925 }
2926
2927 mutex_lock(&mvm->mutex);
2928
2929 switch (cmd) {
2930 case SET_KEY:
2931 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2932 vif->type == NL80211_IFTYPE_AP) && !sta) {
2933 /*
2934 * GTK on AP interface is a TX-only key, return 0;
2935 * on IBSS they're per-station and because we're lazy
2936 * we don't support them for RX, so do the same.
2937 */
2938 ret = 0;
2939 key->hw_key_idx = STA_KEY_IDX_INVALID;
2940 break;
2941 }
2942
2943 /* During FW restart, in order to restore the state as it was,
2944 * don't try to reprogram keys we previously failed for.
2945 */
2946 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2947 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2948 IWL_DEBUG_MAC80211(mvm,
2949 "skip invalid idx key programming during restart\n");
2950 ret = 0;
2951 break;
2952 }
2953
2954 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2955 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key,
2956 test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2957 &mvm->status));
2958 if (ret) {
2959 IWL_WARN(mvm, "set key failed\n");
2960 /*
2961 * can't add key for RX, but we don't need it
2962 * in the device for TX so still return 0
2963 */
2964 key->hw_key_idx = STA_KEY_IDX_INVALID;
2965 ret = 0;
2966 }
2967
2968 break;
2969 case DISABLE_KEY:
2970 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2971 ret = 0;
2972 break;
2973 }
2974
2975 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2976 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2977 break;
2978 default:
2979 ret = -EINVAL;
2980 }
2981
2982 mutex_unlock(&mvm->mutex);
2983 return ret;
2984 }
2985
2986 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2987 struct ieee80211_vif *vif,
2988 struct ieee80211_key_conf *keyconf,
2989 struct ieee80211_sta *sta,
2990 u32 iv32, u16 *phase1key)
2991 {
2992 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2993
2994 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2995 return;
2996
2997 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2998 }
2999
3000
3001 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3002 struct iwl_rx_packet *pkt, void *data)
3003 {
3004 struct iwl_mvm *mvm =
3005 container_of(notif_wait, struct iwl_mvm, notif_wait);
3006 struct iwl_hs20_roc_res *resp;
3007 int resp_len = iwl_rx_packet_payload_len(pkt);
3008 struct iwl_mvm_time_event_data *te_data = data;
3009
3010 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3011 return true;
3012
3013 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3014 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3015 return true;
3016 }
3017
3018 resp = (void *)pkt->data;
3019
3020 IWL_DEBUG_TE(mvm,
3021 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3022 resp->status, resp->event_unique_id);
3023
3024 te_data->uid = le32_to_cpu(resp->event_unique_id);
3025 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3026 te_data->uid);
3027
3028 spin_lock_bh(&mvm->time_event_lock);
3029 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3030 spin_unlock_bh(&mvm->time_event_lock);
3031
3032 return true;
3033 }
3034
3035 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 200
3036 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3037 struct ieee80211_channel *channel,
3038 struct ieee80211_vif *vif,
3039 int duration)
3040 {
3041 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3042 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3043 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3044 static const u16 time_event_response[] = { HOT_SPOT_CMD };
3045 struct iwl_notification_wait wait_time_event;
3046 struct iwl_hs20_roc_req aux_roc_req = {
3047 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3048 .id_and_color =
3049 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3050 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3051 /* Set the channel info data */
3052 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
3053 PHY_BAND_24 : PHY_BAND_5,
3054 .channel_info.channel = channel->hw_value,
3055 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3056 /* Set the time and duration */
3057 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3058 .apply_time_max_delay =
3059 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
3060 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
3061 };
3062
3063 /* Set the node address */
3064 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3065
3066 lockdep_assert_held(&mvm->mutex);
3067
3068 spin_lock_bh(&mvm->time_event_lock);
3069
3070 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3071 spin_unlock_bh(&mvm->time_event_lock);
3072 return -EIO;
3073 }
3074
3075 te_data->vif = vif;
3076 te_data->duration = duration;
3077 te_data->id = HOT_SPOT_CMD;
3078
3079 spin_unlock_bh(&mvm->time_event_lock);
3080
3081 /*
3082 * Use a notification wait, which really just processes the
3083 * command response and doesn't wait for anything, in order
3084 * to be able to process the response and get the UID inside
3085 * the RX path. Using CMD_WANT_SKB doesn't work because it
3086 * stores the buffer and then wakes up this thread, by which
3087 * time another notification (that the time event started)
3088 * might already be processed unsuccessfully.
3089 */
3090 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3091 time_event_response,
3092 ARRAY_SIZE(time_event_response),
3093 iwl_mvm_rx_aux_roc, te_data);
3094
3095 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3096 &aux_roc_req);
3097
3098 if (res) {
3099 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3100 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3101 goto out_clear_te;
3102 }
3103
3104 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3105 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3106 /* should never fail */
3107 WARN_ON_ONCE(res);
3108
3109 if (res) {
3110 out_clear_te:
3111 spin_lock_bh(&mvm->time_event_lock);
3112 iwl_mvm_te_clear_data(mvm, te_data);
3113 spin_unlock_bh(&mvm->time_event_lock);
3114 }
3115
3116 return res;
3117 }
3118
3119 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3120 struct ieee80211_vif *vif,
3121 struct ieee80211_channel *channel,
3122 int duration,
3123 enum ieee80211_roc_type type)
3124 {
3125 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3126 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3127 struct cfg80211_chan_def chandef;
3128 struct iwl_mvm_phy_ctxt *phy_ctxt;
3129 int ret, i;
3130
3131 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3132 duration, type);
3133
3134 flush_work(&mvm->roc_done_wk);
3135
3136 mutex_lock(&mvm->mutex);
3137
3138 switch (vif->type) {
3139 case NL80211_IFTYPE_STATION:
3140 if (fw_has_capa(&mvm->fw->ucode_capa,
3141 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3142 /* Use aux roc framework (HS20) */
3143 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3144 vif, duration);
3145 goto out_unlock;
3146 }
3147 IWL_ERR(mvm, "hotspot not supported\n");
3148 ret = -EINVAL;
3149 goto out_unlock;
3150 case NL80211_IFTYPE_P2P_DEVICE:
3151 /* handle below */
3152 break;
3153 default:
3154 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3155 ret = -EINVAL;
3156 goto out_unlock;
3157 }
3158
3159 for (i = 0; i < NUM_PHY_CTX; i++) {
3160 phy_ctxt = &mvm->phy_ctxts[i];
3161 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3162 continue;
3163
3164 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3165 /*
3166 * Unbind the P2P_DEVICE from the current PHY context,
3167 * and if the PHY context is not used remove it.
3168 */
3169 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3170 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3171 goto out_unlock;
3172
3173 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3174
3175 /* Bind the P2P_DEVICE to the current PHY Context */
3176 mvmvif->phy_ctxt = phy_ctxt;
3177
3178 ret = iwl_mvm_binding_add_vif(mvm, vif);
3179 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3180 goto out_unlock;
3181
3182 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3183 goto schedule_time_event;
3184 }
3185 }
3186
3187 /* Need to update the PHY context only if the ROC channel changed */
3188 if (channel == mvmvif->phy_ctxt->channel)
3189 goto schedule_time_event;
3190
3191 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3192
3193 /*
3194 * Change the PHY context configuration as it is currently referenced
3195 * only by the P2P Device MAC
3196 */
3197 if (mvmvif->phy_ctxt->ref == 1) {
3198 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3199 &chandef, 1, 1);
3200 if (ret)
3201 goto out_unlock;
3202 } else {
3203 /*
3204 * The PHY context is shared with other MACs. Need to remove the
3205 * P2P Device from the binding, allocate an new PHY context and
3206 * create a new binding
3207 */
3208 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3209 if (!phy_ctxt) {
3210 ret = -ENOSPC;
3211 goto out_unlock;
3212 }
3213
3214 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3215 1, 1);
3216 if (ret) {
3217 IWL_ERR(mvm, "Failed to change PHY context\n");
3218 goto out_unlock;
3219 }
3220
3221 /* Unbind the P2P_DEVICE from the current PHY context */
3222 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3223 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3224 goto out_unlock;
3225
3226 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3227
3228 /* Bind the P2P_DEVICE to the new allocated PHY context */
3229 mvmvif->phy_ctxt = phy_ctxt;
3230
3231 ret = iwl_mvm_binding_add_vif(mvm, vif);
3232 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3233 goto out_unlock;
3234
3235 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3236 }
3237
3238 schedule_time_event:
3239 /* Schedule the time events */
3240 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3241
3242 out_unlock:
3243 mutex_unlock(&mvm->mutex);
3244 IWL_DEBUG_MAC80211(mvm, "leave\n");
3245 return ret;
3246 }
3247
3248 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3249 {
3250 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3251
3252 IWL_DEBUG_MAC80211(mvm, "enter\n");
3253
3254 mutex_lock(&mvm->mutex);
3255 iwl_mvm_stop_roc(mvm);
3256 mutex_unlock(&mvm->mutex);
3257
3258 IWL_DEBUG_MAC80211(mvm, "leave\n");
3259 return 0;
3260 }
3261
3262 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3263 struct ieee80211_chanctx_conf *ctx)
3264 {
3265 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3266 struct iwl_mvm_phy_ctxt *phy_ctxt;
3267 int ret;
3268
3269 lockdep_assert_held(&mvm->mutex);
3270
3271 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3272
3273 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3274 if (!phy_ctxt) {
3275 ret = -ENOSPC;
3276 goto out;
3277 }
3278
3279 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3280 ctx->rx_chains_static,
3281 ctx->rx_chains_dynamic);
3282 if (ret) {
3283 IWL_ERR(mvm, "Failed to add PHY context\n");
3284 goto out;
3285 }
3286
3287 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3288 *phy_ctxt_id = phy_ctxt->id;
3289 out:
3290 return ret;
3291 }
3292
3293 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3294 struct ieee80211_chanctx_conf *ctx)
3295 {
3296 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3297 int ret;
3298
3299 mutex_lock(&mvm->mutex);
3300 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3301 mutex_unlock(&mvm->mutex);
3302
3303 return ret;
3304 }
3305
3306 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3307 struct ieee80211_chanctx_conf *ctx)
3308 {
3309 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3310 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3311
3312 lockdep_assert_held(&mvm->mutex);
3313
3314 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3315 }
3316
3317 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3318 struct ieee80211_chanctx_conf *ctx)
3319 {
3320 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3321
3322 mutex_lock(&mvm->mutex);
3323 __iwl_mvm_remove_chanctx(mvm, ctx);
3324 mutex_unlock(&mvm->mutex);
3325 }
3326
3327 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3328 struct ieee80211_chanctx_conf *ctx,
3329 u32 changed)
3330 {
3331 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3332 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3333 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3334
3335 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3336 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3337 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3338 IEEE80211_CHANCTX_CHANGE_RADAR |
3339 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3340 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3341 phy_ctxt->ref, changed))
3342 return;
3343
3344 mutex_lock(&mvm->mutex);
3345 iwl_mvm_bt_coex_vif_change(mvm);
3346 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3347 ctx->rx_chains_static,
3348 ctx->rx_chains_dynamic);
3349 mutex_unlock(&mvm->mutex);
3350 }
3351
3352 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3353 struct ieee80211_vif *vif,
3354 struct ieee80211_chanctx_conf *ctx,
3355 bool switching_chanctx)
3356 {
3357 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3358 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3359 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3360 int ret;
3361
3362 lockdep_assert_held(&mvm->mutex);
3363
3364 mvmvif->phy_ctxt = phy_ctxt;
3365
3366 switch (vif->type) {
3367 case NL80211_IFTYPE_AP:
3368 /* only needed if we're switching chanctx (i.e. during CSA) */
3369 if (switching_chanctx) {
3370 mvmvif->ap_ibss_active = true;
3371 break;
3372 }
3373 case NL80211_IFTYPE_ADHOC:
3374 /*
3375 * The AP binding flow is handled as part of the start_ap flow
3376 * (in bss_info_changed), similarly for IBSS.
3377 */
3378 ret = 0;
3379 goto out;
3380 case NL80211_IFTYPE_STATION:
3381 break;
3382 case NL80211_IFTYPE_MONITOR:
3383 /* always disable PS when a monitor interface is active */
3384 mvmvif->ps_disabled = true;
3385 break;
3386 default:
3387 ret = -EINVAL;
3388 goto out;
3389 }
3390
3391 ret = iwl_mvm_binding_add_vif(mvm, vif);
3392 if (ret)
3393 goto out;
3394
3395 /*
3396 * Power state must be updated before quotas,
3397 * otherwise fw will complain.
3398 */
3399 iwl_mvm_power_update_mac(mvm);
3400
3401 /* Setting the quota at this stage is only required for monitor
3402 * interfaces. For the other types, the bss_info changed flow
3403 * will handle quota settings.
3404 */
3405 if (vif->type == NL80211_IFTYPE_MONITOR) {
3406 mvmvif->monitor_active = true;
3407 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3408 if (ret)
3409 goto out_remove_binding;
3410 }
3411
3412 /* Handle binding during CSA */
3413 if (vif->type == NL80211_IFTYPE_AP) {
3414 iwl_mvm_update_quotas(mvm, false, NULL);
3415 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3416 }
3417
3418 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3419 u32 duration = 2 * vif->bss_conf.beacon_int;
3420
3421 /* iwl_mvm_protect_session() reads directly from the
3422 * device (the system time), so make sure it is
3423 * available.
3424 */
3425 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3426 if (ret)
3427 goto out_remove_binding;
3428
3429 /* Protect the session to make sure we hear the first
3430 * beacon on the new channel.
3431 */
3432 iwl_mvm_protect_session(mvm, vif, duration, duration,
3433 vif->bss_conf.beacon_int / 2,
3434 true);
3435
3436 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3437
3438 iwl_mvm_update_quotas(mvm, false, NULL);
3439 }
3440
3441 goto out;
3442
3443 out_remove_binding:
3444 iwl_mvm_binding_remove_vif(mvm, vif);
3445 iwl_mvm_power_update_mac(mvm);
3446 out:
3447 if (ret)
3448 mvmvif->phy_ctxt = NULL;
3449 return ret;
3450 }
3451 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3452 struct ieee80211_vif *vif,
3453 struct ieee80211_chanctx_conf *ctx)
3454 {
3455 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3456 int ret;
3457
3458 mutex_lock(&mvm->mutex);
3459 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3460 mutex_unlock(&mvm->mutex);
3461
3462 return ret;
3463 }
3464
3465 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3466 struct ieee80211_vif *vif,
3467 struct ieee80211_chanctx_conf *ctx,
3468 bool switching_chanctx)
3469 {
3470 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3471 struct ieee80211_vif *disabled_vif = NULL;
3472
3473 lockdep_assert_held(&mvm->mutex);
3474
3475 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3476
3477 switch (vif->type) {
3478 case NL80211_IFTYPE_ADHOC:
3479 goto out;
3480 case NL80211_IFTYPE_MONITOR:
3481 mvmvif->monitor_active = false;
3482 mvmvif->ps_disabled = false;
3483 break;
3484 case NL80211_IFTYPE_AP:
3485 /* This part is triggered only during CSA */
3486 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3487 goto out;
3488
3489 mvmvif->csa_countdown = false;
3490
3491 /* Set CS bit on all the stations */
3492 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3493
3494 /* Save blocked iface, the timeout is set on the next beacon */
3495 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3496
3497 mvmvif->ap_ibss_active = false;
3498 break;
3499 case NL80211_IFTYPE_STATION:
3500 if (!switching_chanctx)
3501 break;
3502
3503 disabled_vif = vif;
3504
3505 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3506 break;
3507 default:
3508 break;
3509 }
3510
3511 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3512 iwl_mvm_binding_remove_vif(mvm, vif);
3513
3514 out:
3515 mvmvif->phy_ctxt = NULL;
3516 iwl_mvm_power_update_mac(mvm);
3517 }
3518
3519 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3520 struct ieee80211_vif *vif,
3521 struct ieee80211_chanctx_conf *ctx)
3522 {
3523 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3524
3525 mutex_lock(&mvm->mutex);
3526 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3527 mutex_unlock(&mvm->mutex);
3528 }
3529
3530 static int
3531 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3532 struct ieee80211_vif_chanctx_switch *vifs)
3533 {
3534 int ret;
3535
3536 mutex_lock(&mvm->mutex);
3537 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3538 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3539
3540 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3541 if (ret) {
3542 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3543 goto out_reassign;
3544 }
3545
3546 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3547 true);
3548 if (ret) {
3549 IWL_ERR(mvm,
3550 "failed to assign new_ctx during channel switch\n");
3551 goto out_remove;
3552 }
3553
3554 /* we don't support TDLS during DCM - can be caused by channel switch */
3555 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3556 iwl_mvm_teardown_tdls_peers(mvm);
3557
3558 goto out;
3559
3560 out_remove:
3561 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3562
3563 out_reassign:
3564 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3565 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3566 goto out_restart;
3567 }
3568
3569 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3570 true)) {
3571 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3572 goto out_restart;
3573 }
3574
3575 goto out;
3576
3577 out_restart:
3578 /* things keep failing, better restart the hw */
3579 iwl_mvm_nic_restart(mvm, false);
3580
3581 out:
3582 mutex_unlock(&mvm->mutex);
3583
3584 return ret;
3585 }
3586
3587 static int
3588 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3589 struct ieee80211_vif_chanctx_switch *vifs)
3590 {
3591 int ret;
3592
3593 mutex_lock(&mvm->mutex);
3594 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3595
3596 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3597 true);
3598 if (ret) {
3599 IWL_ERR(mvm,
3600 "failed to assign new_ctx during channel switch\n");
3601 goto out_reassign;
3602 }
3603
3604 goto out;
3605
3606 out_reassign:
3607 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3608 true)) {
3609 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3610 goto out_restart;
3611 }
3612
3613 goto out;
3614
3615 out_restart:
3616 /* things keep failing, better restart the hw */
3617 iwl_mvm_nic_restart(mvm, false);
3618
3619 out:
3620 mutex_unlock(&mvm->mutex);
3621
3622 return ret;
3623 }
3624
3625 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3626 struct ieee80211_vif_chanctx_switch *vifs,
3627 int n_vifs,
3628 enum ieee80211_chanctx_switch_mode mode)
3629 {
3630 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3631 int ret;
3632
3633 /* we only support a single-vif right now */
3634 if (n_vifs > 1)
3635 return -EOPNOTSUPP;
3636
3637 switch (mode) {
3638 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3639 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3640 break;
3641 case CHANCTX_SWMODE_REASSIGN_VIF:
3642 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3643 break;
3644 default:
3645 ret = -EOPNOTSUPP;
3646 break;
3647 }
3648
3649 return ret;
3650 }
3651
3652 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3653 struct ieee80211_sta *sta,
3654 bool set)
3655 {
3656 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3657 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3658
3659 if (!mvm_sta || !mvm_sta->vif) {
3660 IWL_ERR(mvm, "Station is not associated to a vif\n");
3661 return -EINVAL;
3662 }
3663
3664 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3665 }
3666
3667 #ifdef CONFIG_NL80211_TESTMODE
3668 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3669 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3670 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3671 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3672 };
3673
3674 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3675 struct ieee80211_vif *vif,
3676 void *data, int len)
3677 {
3678 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3679 int err;
3680 u32 noa_duration;
3681
3682 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3683 if (err)
3684 return err;
3685
3686 if (!tb[IWL_MVM_TM_ATTR_CMD])
3687 return -EINVAL;
3688
3689 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3690 case IWL_MVM_TM_CMD_SET_NOA:
3691 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3692 !vif->bss_conf.enable_beacon ||
3693 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3694 return -EINVAL;
3695
3696 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3697 if (noa_duration >= vif->bss_conf.beacon_int)
3698 return -EINVAL;
3699
3700 mvm->noa_duration = noa_duration;
3701 mvm->noa_vif = vif;
3702
3703 return iwl_mvm_update_quotas(mvm, false, NULL);
3704 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3705 /* must be associated client vif - ignore authorized */
3706 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3707 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3708 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3709 return -EINVAL;
3710
3711 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3712 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3713 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3714 }
3715
3716 return -EOPNOTSUPP;
3717 }
3718
3719 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3720 struct ieee80211_vif *vif,
3721 void *data, int len)
3722 {
3723 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3724 int err;
3725
3726 mutex_lock(&mvm->mutex);
3727 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3728 mutex_unlock(&mvm->mutex);
3729
3730 return err;
3731 }
3732 #endif
3733
3734 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3735 struct ieee80211_vif *vif,
3736 struct ieee80211_channel_switch *chsw)
3737 {
3738 /* By implementing this operation, we prevent mac80211 from
3739 * starting its own channel switch timer, so that we can call
3740 * ieee80211_chswitch_done() ourselves at the right time
3741 * (which is when the absence time event starts).
3742 */
3743
3744 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3745 "dummy channel switch op\n");
3746 }
3747
3748 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3749 struct ieee80211_vif *vif,
3750 struct ieee80211_channel_switch *chsw)
3751 {
3752 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3753 struct ieee80211_vif *csa_vif;
3754 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3755 u32 apply_time;
3756 int ret;
3757
3758 mutex_lock(&mvm->mutex);
3759
3760 mvmvif->csa_failed = false;
3761
3762 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3763 chsw->chandef.center_freq1);
3764
3765 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3766
3767 switch (vif->type) {
3768 case NL80211_IFTYPE_AP:
3769 csa_vif =
3770 rcu_dereference_protected(mvm->csa_vif,
3771 lockdep_is_held(&mvm->mutex));
3772 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3773 "Another CSA is already in progress")) {
3774 ret = -EBUSY;
3775 goto out_unlock;
3776 }
3777
3778 rcu_assign_pointer(mvm->csa_vif, vif);
3779
3780 if (WARN_ONCE(mvmvif->csa_countdown,
3781 "Previous CSA countdown didn't complete")) {
3782 ret = -EBUSY;
3783 goto out_unlock;
3784 }
3785
3786 break;
3787 case NL80211_IFTYPE_STATION:
3788 /* Schedule the time event to a bit before beacon 1,
3789 * to make sure we're in the new channel when the
3790 * GO/AP arrives.
3791 */
3792 apply_time = chsw->device_timestamp +
3793 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3794 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3795
3796 if (chsw->block_tx)
3797 iwl_mvm_csa_client_absent(mvm, vif);
3798
3799 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3800 apply_time);
3801 if (mvmvif->bf_data.bf_enabled) {
3802 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3803 if (ret)
3804 goto out_unlock;
3805 }
3806
3807 break;
3808 default:
3809 break;
3810 }
3811
3812 mvmvif->ps_disabled = true;
3813
3814 ret = iwl_mvm_power_update_ps(mvm);
3815 if (ret)
3816 goto out_unlock;
3817
3818 /* we won't be on this channel any longer */
3819 iwl_mvm_teardown_tdls_peers(mvm);
3820
3821 out_unlock:
3822 mutex_unlock(&mvm->mutex);
3823
3824 return ret;
3825 }
3826
3827 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3828 struct ieee80211_vif *vif)
3829 {
3830 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3831 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3832 int ret;
3833
3834 mutex_lock(&mvm->mutex);
3835
3836 if (mvmvif->csa_failed) {
3837 mvmvif->csa_failed = false;
3838 ret = -EIO;
3839 goto out_unlock;
3840 }
3841
3842 if (vif->type == NL80211_IFTYPE_STATION) {
3843 struct iwl_mvm_sta *mvmsta;
3844
3845 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3846 mvmvif->ap_sta_id);
3847
3848 if (WARN_ON(!mvmsta)) {
3849 ret = -EIO;
3850 goto out_unlock;
3851 }
3852
3853 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3854
3855 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3856
3857 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3858 if (ret)
3859 goto out_unlock;
3860
3861 iwl_mvm_stop_session_protection(mvm, vif);
3862 }
3863
3864 mvmvif->ps_disabled = false;
3865
3866 ret = iwl_mvm_power_update_ps(mvm);
3867
3868 out_unlock:
3869 mutex_unlock(&mvm->mutex);
3870
3871 return ret;
3872 }
3873
3874 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3875 struct ieee80211_vif *vif, u32 queues, bool drop)
3876 {
3877 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3878 struct iwl_mvm_vif *mvmvif;
3879 struct iwl_mvm_sta *mvmsta;
3880 struct ieee80211_sta *sta;
3881 int i;
3882 u32 msk = 0;
3883
3884 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3885 return;
3886
3887 mutex_lock(&mvm->mutex);
3888 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3889
3890 /* flush the AP-station and all TDLS peers */
3891 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3892 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3893 lockdep_is_held(&mvm->mutex));
3894 if (IS_ERR_OR_NULL(sta))
3895 continue;
3896
3897 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3898 if (mvmsta->vif != vif)
3899 continue;
3900
3901 /* make sure only TDLS peers or the AP are flushed */
3902 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3903
3904 msk |= mvmsta->tfd_queue_msk;
3905 }
3906
3907 if (drop) {
3908 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3909 IWL_ERR(mvm, "flush request fail\n");
3910 mutex_unlock(&mvm->mutex);
3911 } else {
3912 mutex_unlock(&mvm->mutex);
3913
3914 /* this can take a while, and we may need/want other operations
3915 * to succeed while doing this, so do it without the mutex held
3916 */
3917 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3918 }
3919 }
3920
3921 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3922 struct survey_info *survey)
3923 {
3924 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3925 int ret;
3926
3927 memset(survey, 0, sizeof(*survey));
3928
3929 /* only support global statistics right now */
3930 if (idx != 0)
3931 return -ENOENT;
3932
3933 if (fw_has_capa(&mvm->fw->ucode_capa,
3934 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3935 return -ENOENT;
3936
3937 mutex_lock(&mvm->mutex);
3938
3939 if (mvm->ucode_loaded) {
3940 ret = iwl_mvm_request_statistics(mvm, false);
3941 if (ret)
3942 goto out;
3943 }
3944
3945 survey->filled = SURVEY_INFO_TIME |
3946 SURVEY_INFO_TIME_RX |
3947 SURVEY_INFO_TIME_TX |
3948 SURVEY_INFO_TIME_SCAN;
3949 survey->time = mvm->accu_radio_stats.on_time_rf +
3950 mvm->radio_stats.on_time_rf;
3951 do_div(survey->time, USEC_PER_MSEC);
3952
3953 survey->time_rx = mvm->accu_radio_stats.rx_time +
3954 mvm->radio_stats.rx_time;
3955 do_div(survey->time_rx, USEC_PER_MSEC);
3956
3957 survey->time_tx = mvm->accu_radio_stats.tx_time +
3958 mvm->radio_stats.tx_time;
3959 do_div(survey->time_tx, USEC_PER_MSEC);
3960
3961 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3962 mvm->radio_stats.on_time_scan;
3963 do_div(survey->time_scan, USEC_PER_MSEC);
3964
3965 ret = 0;
3966 out:
3967 mutex_unlock(&mvm->mutex);
3968 return ret;
3969 }
3970
3971 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3972 struct ieee80211_vif *vif,
3973 struct ieee80211_sta *sta,
3974 struct station_info *sinfo)
3975 {
3976 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3977 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3978 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3979
3980 if (fw_has_capa(&mvm->fw->ucode_capa,
3981 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3982 return;
3983
3984 /* if beacon filtering isn't on mac80211 does it anyway */
3985 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3986 return;
3987
3988 if (!vif->bss_conf.assoc)
3989 return;
3990
3991 mutex_lock(&mvm->mutex);
3992
3993 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3994 goto unlock;
3995
3996 if (iwl_mvm_request_statistics(mvm, false))
3997 goto unlock;
3998
3999 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4000 mvmvif->beacon_stats.accu_num_beacons;
4001 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
4002 if (mvmvif->beacon_stats.avg_signal) {
4003 /* firmware only reports a value after RXing a few beacons */
4004 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4005 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4006 }
4007 unlock:
4008 mutex_unlock(&mvm->mutex);
4009 }
4010
4011 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4012 struct ieee80211_vif *vif,
4013 const struct ieee80211_event *event)
4014 {
4015 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
4016 do { \
4017 if ((_cnt) && --(_cnt)) \
4018 break; \
4019 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
4020 } while (0)
4021
4022 struct iwl_fw_dbg_trigger_tlv *trig;
4023 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4024
4025 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4026 return;
4027
4028 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4029 trig_mlme = (void *)trig->data;
4030 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4031 return;
4032
4033 if (event->u.mlme.data == ASSOC_EVENT) {
4034 if (event->u.mlme.status == MLME_DENIED)
4035 CHECK_MLME_TRIGGER(mvm, trig, buf,
4036 trig_mlme->stop_assoc_denied,
4037 "DENIED ASSOC: reason %d",
4038 event->u.mlme.reason);
4039 else if (event->u.mlme.status == MLME_TIMEOUT)
4040 CHECK_MLME_TRIGGER(mvm, trig, buf,
4041 trig_mlme->stop_assoc_timeout,
4042 "ASSOC TIMEOUT");
4043 } else if (event->u.mlme.data == AUTH_EVENT) {
4044 if (event->u.mlme.status == MLME_DENIED)
4045 CHECK_MLME_TRIGGER(mvm, trig, buf,
4046 trig_mlme->stop_auth_denied,
4047 "DENIED AUTH: reason %d",
4048 event->u.mlme.reason);
4049 else if (event->u.mlme.status == MLME_TIMEOUT)
4050 CHECK_MLME_TRIGGER(mvm, trig, buf,
4051 trig_mlme->stop_auth_timeout,
4052 "AUTH TIMEOUT");
4053 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4054 CHECK_MLME_TRIGGER(mvm, trig, buf,
4055 trig_mlme->stop_rx_deauth,
4056 "DEAUTH RX %d", event->u.mlme.reason);
4057 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4058 CHECK_MLME_TRIGGER(mvm, trig, buf,
4059 trig_mlme->stop_tx_deauth,
4060 "DEAUTH TX %d", event->u.mlme.reason);
4061 }
4062 #undef CHECK_MLME_TRIGGER
4063 }
4064
4065 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4066 struct ieee80211_vif *vif,
4067 const struct ieee80211_event *event)
4068 {
4069 struct iwl_fw_dbg_trigger_tlv *trig;
4070 struct iwl_fw_dbg_trigger_ba *ba_trig;
4071
4072 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4073 return;
4074
4075 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4076 ba_trig = (void *)trig->data;
4077 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4078 return;
4079
4080 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4081 return;
4082
4083 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4084 "BAR received from %pM, tid %d, ssn %d",
4085 event->u.ba.sta->addr, event->u.ba.tid,
4086 event->u.ba.ssn);
4087 }
4088
4089 static void
4090 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4091 struct ieee80211_vif *vif,
4092 const struct ieee80211_event *event)
4093 {
4094 struct iwl_fw_dbg_trigger_tlv *trig;
4095 struct iwl_fw_dbg_trigger_ba *ba_trig;
4096
4097 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4098 return;
4099
4100 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4101 ba_trig = (void *)trig->data;
4102 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4103 return;
4104
4105 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4106 return;
4107
4108 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4109 "Frame from %pM timed out, tid %d",
4110 event->u.ba.sta->addr, event->u.ba.tid);
4111 }
4112
4113 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4114 struct ieee80211_vif *vif,
4115 const struct ieee80211_event *event)
4116 {
4117 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4118
4119 switch (event->type) {
4120 case MLME_EVENT:
4121 iwl_mvm_event_mlme_callback(mvm, vif, event);
4122 break;
4123 case BAR_RX_EVENT:
4124 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4125 break;
4126 case BA_FRAME_TIMEOUT:
4127 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4128 break;
4129 default:
4130 break;
4131 }
4132 }
4133
4134 const struct ieee80211_ops iwl_mvm_hw_ops = {
4135 .tx = iwl_mvm_mac_tx,
4136 .ampdu_action = iwl_mvm_mac_ampdu_action,
4137 .start = iwl_mvm_mac_start,
4138 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4139 .stop = iwl_mvm_mac_stop,
4140 .add_interface = iwl_mvm_mac_add_interface,
4141 .remove_interface = iwl_mvm_mac_remove_interface,
4142 .config = iwl_mvm_mac_config,
4143 .prepare_multicast = iwl_mvm_prepare_multicast,
4144 .configure_filter = iwl_mvm_configure_filter,
4145 .bss_info_changed = iwl_mvm_bss_info_changed,
4146 .hw_scan = iwl_mvm_mac_hw_scan,
4147 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4148 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4149 .sta_state = iwl_mvm_mac_sta_state,
4150 .sta_notify = iwl_mvm_mac_sta_notify,
4151 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4152 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4153 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4154 .sta_rc_update = iwl_mvm_sta_rc_update,
4155 .conf_tx = iwl_mvm_mac_conf_tx,
4156 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4157 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4158 .flush = iwl_mvm_mac_flush,
4159 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4160 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4161 .set_key = iwl_mvm_mac_set_key,
4162 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4163 .remain_on_channel = iwl_mvm_roc,
4164 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4165 .add_chanctx = iwl_mvm_add_chanctx,
4166 .remove_chanctx = iwl_mvm_remove_chanctx,
4167 .change_chanctx = iwl_mvm_change_chanctx,
4168 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4169 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4170 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4171
4172 .start_ap = iwl_mvm_start_ap_ibss,
4173 .stop_ap = iwl_mvm_stop_ap_ibss,
4174 .join_ibss = iwl_mvm_start_ap_ibss,
4175 .leave_ibss = iwl_mvm_stop_ap_ibss,
4176
4177 .set_tim = iwl_mvm_set_tim,
4178
4179 .channel_switch = iwl_mvm_channel_switch,
4180 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4181 .post_channel_switch = iwl_mvm_post_channel_switch,
4182
4183 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4184 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4185 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4186
4187 .event_callback = iwl_mvm_mac_event_callback,
4188
4189 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4190
4191 #ifdef CONFIG_PM_SLEEP
4192 /* look at d3.c */
4193 .suspend = iwl_mvm_suspend,
4194 .resume = iwl_mvm_resume,
4195 .set_wakeup = iwl_mvm_set_wakeup,
4196 .set_rekey_data = iwl_mvm_set_rekey_data,
4197 #if IS_ENABLED(CONFIG_IPV6)
4198 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4199 #endif
4200 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4201 #endif
4202 .get_survey = iwl_mvm_mac_get_survey,
4203 .sta_statistics = iwl_mvm_mac_sta_statistics,
4204 };
Linux kernel - Deliverables
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