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iwlwifi: mvm: let any command flag be passed to iwl_mvm_flushtx_path()
[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, bool amsdu)
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 /* Make room for fw's virtual image pages, if it exists */
1196 if (mvm->fw->img[mvm->cur_ucode].paging_mem_size)
1197 file_len += mvm->num_of_paging_blk *
1198 (sizeof(*dump_data) +
1199 sizeof(struct iwl_fw_error_dump_paging) +
1200 PAGING_BLOCK_SIZE);
1201
1202 /* If we only want a monitor dump, reset the file length */
1203 if (monitor_dump_only) {
1204 file_len = sizeof(*dump_file) + sizeof(*dump_data) +
1205 sizeof(*dump_info);
1206 }
1207
1208 /*
1209 * In 8000 HW family B-step include the ICCM (which resides separately)
1210 */
1211 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1212 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP)
1213 file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
1214 IWL8260_ICCM_LEN;
1215
1216 if (mvm->fw_dump_desc)
1217 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
1218 mvm->fw_dump_desc->len;
1219
1220 dump_file = vzalloc(file_len);
1221 if (!dump_file) {
1222 kfree(fw_error_dump);
1223 iwl_mvm_free_fw_dump_desc(mvm);
1224 return;
1225 }
1226
1227 fw_error_dump->op_mode_ptr = dump_file;
1228
1229 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
1230 dump_data = (void *)dump_file->data;
1231
1232 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
1233 dump_data->len = cpu_to_le32(sizeof(*dump_info));
1234 dump_info = (void *) dump_data->data;
1235 dump_info->device_family =
1236 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
1237 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
1238 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
1239 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
1240 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
1241 sizeof(dump_info->fw_human_readable));
1242 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1243 sizeof(dump_info->dev_human_readable));
1244 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1245 sizeof(dump_info->bus_human_readable));
1246
1247 dump_data = iwl_fw_error_next_data(dump_data);
1248 /* We only dump the FIFOs if the FW is in error state */
1249 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1250 iwl_mvm_dump_fifos(mvm, &dump_data);
1251
1252 if (mvm->fw_dump_desc) {
1253 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
1254 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
1255 mvm->fw_dump_desc->len);
1256 dump_trig = (void *)dump_data->data;
1257 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
1258 sizeof(*dump_trig) + mvm->fw_dump_desc->len);
1259
1260 /* now we can free this copy */
1261 iwl_mvm_free_fw_dump_desc(mvm);
1262 dump_data = iwl_fw_error_next_data(dump_data);
1263 }
1264
1265 /* In case we only want monitor dump, skip to dump trasport data */
1266 if (monitor_dump_only)
1267 goto dump_trans_data;
1268
1269 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1270 dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1271 dump_mem = (void *)dump_data->data;
1272 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1273 dump_mem->offset = cpu_to_le32(sram_ofs);
1274 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
1275 sram_len);
1276
1277 if (smem_len) {
1278 dump_data = iwl_fw_error_next_data(dump_data);
1279 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1280 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1281 dump_mem = (void *)dump_data->data;
1282 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1283 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
1284 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
1285 dump_mem->data, smem_len);
1286 }
1287
1288 if (sram2_len) {
1289 dump_data = iwl_fw_error_next_data(dump_data);
1290 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1291 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1292 dump_mem = (void *)dump_data->data;
1293 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1294 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1295 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1296 dump_mem->data, sram2_len);
1297 }
1298
1299 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1300 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) {
1301 dump_data = iwl_fw_error_next_data(dump_data);
1302 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1303 dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN +
1304 sizeof(*dump_mem));
1305 dump_mem = (void *)dump_data->data;
1306 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1307 dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET);
1308 iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET,
1309 dump_mem->data, IWL8260_ICCM_LEN);
1310 }
1311
1312 /* Dump fw's virtual image */
1313 if (mvm->fw->img[mvm->cur_ucode].paging_mem_size) {
1314 u32 i;
1315
1316 for (i = 1; i < mvm->num_of_paging_blk + 1; i++) {
1317 struct iwl_fw_error_dump_paging *paging;
1318 struct page *pages =
1319 mvm->fw_paging_db[i].fw_paging_block;
1320
1321 dump_data = iwl_fw_error_next_data(dump_data);
1322 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PAGING);
1323 dump_data->len = cpu_to_le32(sizeof(*paging) +
1324 PAGING_BLOCK_SIZE);
1325 paging = (void *)dump_data->data;
1326 paging->index = cpu_to_le32(i);
1327 memcpy(paging->data, page_address(pages),
1328 PAGING_BLOCK_SIZE);
1329 }
1330 }
1331
1332 dump_trans_data:
1333 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans,
1334 mvm->fw_dump_trig);
1335 fw_error_dump->op_mode_len = file_len;
1336 if (fw_error_dump->trans_ptr)
1337 file_len += fw_error_dump->trans_ptr->len;
1338 dump_file->file_len = cpu_to_le32(file_len);
1339
1340 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1341 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
1342
1343 mvm->fw_dump_trig = NULL;
1344 clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
1345 }
1346
1347 struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
1348 .trig_desc = {
1349 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
1350 },
1351 };
1352
1353 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1354 {
1355 /* clear the D3 reconfig, we only need it to avoid dumping a
1356 * firmware coredump on reconfiguration, we shouldn't do that
1357 * on D3->D0 transition
1358 */
1359 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1360 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1361 iwl_mvm_fw_error_dump(mvm);
1362 }
1363
1364 /* cleanup all stale references (scan, roc), but keep the
1365 * ucode_down ref until reconfig is complete
1366 */
1367 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1368
1369 iwl_trans_stop_device(mvm->trans);
1370
1371 mvm->scan_status = 0;
1372 mvm->ps_disabled = false;
1373 mvm->calibrating = false;
1374
1375 /* just in case one was running */
1376 ieee80211_remain_on_channel_expired(mvm->hw);
1377
1378 /*
1379 * cleanup all interfaces, even inactive ones, as some might have
1380 * gone down during the HW restart
1381 */
1382 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1383
1384 mvm->p2p_device_vif = NULL;
1385 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1386
1387 iwl_mvm_reset_phy_ctxts(mvm);
1388 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1389 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1390 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1391 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1392 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1393 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1394 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1395 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1396
1397 ieee80211_wake_queues(mvm->hw);
1398
1399 /* clear any stale d0i3 state */
1400 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1401
1402 mvm->vif_count = 0;
1403 mvm->rx_ba_sessions = 0;
1404 mvm->fw_dbg_conf = FW_DBG_INVALID;
1405
1406 /* keep statistics ticking */
1407 iwl_mvm_accu_radio_stats(mvm);
1408 }
1409
1410 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1411 {
1412 int ret;
1413
1414 lockdep_assert_held(&mvm->mutex);
1415
1416 /* Clean up some internal and mac80211 state on restart */
1417 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1418 iwl_mvm_restart_cleanup(mvm);
1419
1420 ret = iwl_mvm_up(mvm);
1421
1422 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1423 /* Something went wrong - we need to finish some cleanup
1424 * that normally iwl_mvm_mac_restart_complete() below
1425 * would do.
1426 */
1427 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1428 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1429 }
1430
1431 return ret;
1432 }
1433
1434 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1435 {
1436 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1437 int ret;
1438
1439 /* Some hw restart cleanups must not hold the mutex */
1440 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1441 /*
1442 * Make sure we are out of d0i3. This is needed
1443 * to make sure the reference accounting is correct
1444 * (and there is no stale d0i3_exit_work).
1445 */
1446 wait_event_timeout(mvm->d0i3_exit_waitq,
1447 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1448 &mvm->status),
1449 HZ);
1450 }
1451
1452 mutex_lock(&mvm->mutex);
1453 ret = __iwl_mvm_mac_start(mvm);
1454 mutex_unlock(&mvm->mutex);
1455
1456 return ret;
1457 }
1458
1459 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1460 {
1461 int ret;
1462
1463 mutex_lock(&mvm->mutex);
1464
1465 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1466 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1467 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1468 if (ret)
1469 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1470 ret);
1471
1472 /* allow transport/FW low power modes */
1473 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1474
1475 /*
1476 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1477 * of packets the FW sent out, so we must reconnect.
1478 */
1479 iwl_mvm_teardown_tdls_peers(mvm);
1480
1481 mutex_unlock(&mvm->mutex);
1482 }
1483
1484 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1485 {
1486 if (!iwl_mvm_is_d0i3_supported(mvm))
1487 return;
1488
1489 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1490 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1491 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1492 &mvm->status),
1493 HZ))
1494 WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1495 }
1496
1497 static void
1498 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1499 enum ieee80211_reconfig_type reconfig_type)
1500 {
1501 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1502
1503 switch (reconfig_type) {
1504 case IEEE80211_RECONFIG_TYPE_RESTART:
1505 iwl_mvm_restart_complete(mvm);
1506 break;
1507 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1508 iwl_mvm_resume_complete(mvm);
1509 break;
1510 }
1511 }
1512
1513 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1514 {
1515 lockdep_assert_held(&mvm->mutex);
1516
1517 /* firmware counters are obviously reset now, but we shouldn't
1518 * partially track so also clear the fw_reset_accu counters.
1519 */
1520 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1521
1522 /*
1523 * Disallow low power states when the FW is down by taking
1524 * the UCODE_DOWN ref. in case of ongoing hw restart the
1525 * ref is already taken, so don't take it again.
1526 */
1527 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1528 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1529
1530 /* async_handlers_wk is now blocked */
1531
1532 /*
1533 * The work item could be running or queued if the
1534 * ROC time event stops just as we get here.
1535 */
1536 flush_work(&mvm->roc_done_wk);
1537
1538 iwl_trans_stop_device(mvm->trans);
1539
1540 iwl_mvm_async_handlers_purge(mvm);
1541 /* async_handlers_list is empty and will stay empty: HW is stopped */
1542
1543 /* the fw is stopped, the aux sta is dead: clean up driver state */
1544 iwl_mvm_del_aux_sta(mvm);
1545
1546 /*
1547 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1548 * won't be called in this case).
1549 * But make sure to cleanup interfaces that have gone down before/during
1550 * HW restart was requested.
1551 */
1552 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1553 ieee80211_iterate_interfaces(mvm->hw, 0,
1554 iwl_mvm_cleanup_iterator, mvm);
1555
1556 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1557 * make sure there's nothing left there and warn if any is found.
1558 */
1559 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1560 int i;
1561
1562 for (i = 0; i < mvm->max_scans; i++) {
1563 if (WARN_ONCE(mvm->scan_uid_status[i],
1564 "UMAC scan UID %d status was not cleaned\n",
1565 i))
1566 mvm->scan_uid_status[i] = 0;
1567 }
1568 }
1569
1570 mvm->ucode_loaded = false;
1571 }
1572
1573 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1574 {
1575 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1576
1577 flush_work(&mvm->d0i3_exit_work);
1578 flush_work(&mvm->async_handlers_wk);
1579 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1580 iwl_mvm_free_fw_dump_desc(mvm);
1581
1582 mutex_lock(&mvm->mutex);
1583 __iwl_mvm_mac_stop(mvm);
1584 mutex_unlock(&mvm->mutex);
1585
1586 /*
1587 * The worker might have been waiting for the mutex, let it run and
1588 * discover that its list is now empty.
1589 */
1590 cancel_work_sync(&mvm->async_handlers_wk);
1591 }
1592
1593 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1594 {
1595 u16 i;
1596
1597 lockdep_assert_held(&mvm->mutex);
1598
1599 for (i = 0; i < NUM_PHY_CTX; i++)
1600 if (!mvm->phy_ctxts[i].ref)
1601 return &mvm->phy_ctxts[i];
1602
1603 IWL_ERR(mvm, "No available PHY context\n");
1604 return NULL;
1605 }
1606
1607 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1608 s16 tx_power)
1609 {
1610 struct iwl_dev_tx_power_cmd cmd = {
1611 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1612 .v2.mac_context_id =
1613 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1614 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1615 };
1616 int len = sizeof(cmd);
1617
1618 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1619 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1620
1621 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1622 len = sizeof(cmd.v2);
1623
1624 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1625 }
1626
1627 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1628 struct ieee80211_vif *vif)
1629 {
1630 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1631 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1632 int ret;
1633
1634 mvmvif->mvm = mvm;
1635
1636 /*
1637 * make sure D0i3 exit is completed, otherwise a target access
1638 * during tx queue configuration could be done when still in
1639 * D0i3 state.
1640 */
1641 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1642 if (ret)
1643 return ret;
1644
1645 /*
1646 * Not much to do here. The stack will not allow interface
1647 * types or combinations that we didn't advertise, so we
1648 * don't really have to check the types.
1649 */
1650
1651 mutex_lock(&mvm->mutex);
1652
1653 /* make sure that beacon statistics don't go backwards with FW reset */
1654 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1655 mvmvif->beacon_stats.accu_num_beacons +=
1656 mvmvif->beacon_stats.num_beacons;
1657
1658 /* Allocate resources for the MAC context, and add it to the fw */
1659 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1660 if (ret)
1661 goto out_unlock;
1662
1663 /* Counting number of interfaces is needed for legacy PM */
1664 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1665 mvm->vif_count++;
1666
1667 /*
1668 * The AP binding flow can be done only after the beacon
1669 * template is configured (which happens only in the mac80211
1670 * start_ap() flow), and adding the broadcast station can happen
1671 * only after the binding.
1672 * In addition, since modifying the MAC before adding a bcast
1673 * station is not allowed by the FW, delay the adding of MAC context to
1674 * the point where we can also add the bcast station.
1675 * In short: there's not much we can do at this point, other than
1676 * allocating resources :)
1677 */
1678 if (vif->type == NL80211_IFTYPE_AP ||
1679 vif->type == NL80211_IFTYPE_ADHOC) {
1680 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1681 if (ret) {
1682 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1683 goto out_release;
1684 }
1685
1686 iwl_mvm_vif_dbgfs_register(mvm, vif);
1687 goto out_unlock;
1688 }
1689
1690 mvmvif->features |= hw->netdev_features;
1691
1692 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1693 if (ret)
1694 goto out_release;
1695
1696 ret = iwl_mvm_power_update_mac(mvm);
1697 if (ret)
1698 goto out_remove_mac;
1699
1700 /* beacon filtering */
1701 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1702 if (ret)
1703 goto out_remove_mac;
1704
1705 if (!mvm->bf_allowed_vif &&
1706 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1707 mvm->bf_allowed_vif = mvmvif;
1708 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1709 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1710 }
1711
1712 /*
1713 * P2P_DEVICE interface does not have a channel context assigned to it,
1714 * so a dedicated PHY context is allocated to it and the corresponding
1715 * MAC context is bound to it at this stage.
1716 */
1717 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1718
1719 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1720 if (!mvmvif->phy_ctxt) {
1721 ret = -ENOSPC;
1722 goto out_free_bf;
1723 }
1724
1725 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1726 ret = iwl_mvm_binding_add_vif(mvm, vif);
1727 if (ret)
1728 goto out_unref_phy;
1729
1730 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1731 if (ret)
1732 goto out_unbind;
1733
1734 /* Save a pointer to p2p device vif, so it can later be used to
1735 * update the p2p device MAC when a GO is started/stopped */
1736 mvm->p2p_device_vif = vif;
1737 }
1738
1739 iwl_mvm_vif_dbgfs_register(mvm, vif);
1740 goto out_unlock;
1741
1742 out_unbind:
1743 iwl_mvm_binding_remove_vif(mvm, vif);
1744 out_unref_phy:
1745 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1746 out_free_bf:
1747 if (mvm->bf_allowed_vif == mvmvif) {
1748 mvm->bf_allowed_vif = NULL;
1749 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1750 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1751 }
1752 out_remove_mac:
1753 mvmvif->phy_ctxt = NULL;
1754 iwl_mvm_mac_ctxt_remove(mvm, vif);
1755 out_release:
1756 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1757 mvm->vif_count--;
1758
1759 iwl_mvm_mac_ctxt_release(mvm, vif);
1760 out_unlock:
1761 mutex_unlock(&mvm->mutex);
1762
1763 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1764
1765 return ret;
1766 }
1767
1768 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1769 struct ieee80211_vif *vif)
1770 {
1771 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1772
1773 if (tfd_msk) {
1774 /*
1775 * mac80211 first removes all the stations of the vif and
1776 * then removes the vif. When it removes a station it also
1777 * flushes the AMPDU session. So by now, all the AMPDU sessions
1778 * of all the stations of this vif are closed, and the queues
1779 * of these AMPDU sessions are properly closed.
1780 * We still need to take care of the shared queues of the vif.
1781 * Flush them here.
1782 */
1783 mutex_lock(&mvm->mutex);
1784 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1785 mutex_unlock(&mvm->mutex);
1786
1787 /*
1788 * There are transports that buffer a few frames in the host.
1789 * For these, the flush above isn't enough since while we were
1790 * flushing, the transport might have sent more frames to the
1791 * device. To solve this, wait here until the transport is
1792 * empty. Technically, this could have replaced the flush
1793 * above, but flush is much faster than draining. So flush
1794 * first, and drain to make sure we have no frames in the
1795 * transport anymore.
1796 * If a station still had frames on the shared queues, it is
1797 * already marked as draining, so to complete the draining, we
1798 * just need to wait until the transport is empty.
1799 */
1800 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1801 }
1802
1803 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1804 /*
1805 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1806 * We assume here that all the packets sent to the OFFCHANNEL
1807 * queue are sent in ROC session.
1808 */
1809 flush_work(&mvm->roc_done_wk);
1810 } else {
1811 /*
1812 * By now, all the AC queues are empty. The AGG queues are
1813 * empty too. We already got all the Tx responses for all the
1814 * packets in the queues. The drain work can have been
1815 * triggered. Flush it.
1816 */
1817 flush_work(&mvm->sta_drained_wk);
1818 }
1819 }
1820
1821 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1822 struct ieee80211_vif *vif)
1823 {
1824 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1825 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1826
1827 iwl_mvm_prepare_mac_removal(mvm, vif);
1828
1829 mutex_lock(&mvm->mutex);
1830
1831 if (mvm->bf_allowed_vif == mvmvif) {
1832 mvm->bf_allowed_vif = NULL;
1833 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1834 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1835 }
1836
1837 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1838
1839 /*
1840 * For AP/GO interface, the tear down of the resources allocated to the
1841 * interface is be handled as part of the stop_ap flow.
1842 */
1843 if (vif->type == NL80211_IFTYPE_AP ||
1844 vif->type == NL80211_IFTYPE_ADHOC) {
1845 #ifdef CONFIG_NL80211_TESTMODE
1846 if (vif == mvm->noa_vif) {
1847 mvm->noa_vif = NULL;
1848 mvm->noa_duration = 0;
1849 }
1850 #endif
1851 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1852 goto out_release;
1853 }
1854
1855 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1856 mvm->p2p_device_vif = NULL;
1857 iwl_mvm_rm_bcast_sta(mvm, vif);
1858 iwl_mvm_binding_remove_vif(mvm, vif);
1859 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1860 mvmvif->phy_ctxt = NULL;
1861 }
1862
1863 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1864 mvm->vif_count--;
1865
1866 iwl_mvm_power_update_mac(mvm);
1867 iwl_mvm_mac_ctxt_remove(mvm, vif);
1868
1869 out_release:
1870 iwl_mvm_mac_ctxt_release(mvm, vif);
1871 mutex_unlock(&mvm->mutex);
1872 }
1873
1874 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1875 {
1876 return 0;
1877 }
1878
1879 struct iwl_mvm_mc_iter_data {
1880 struct iwl_mvm *mvm;
1881 int port_id;
1882 };
1883
1884 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1885 struct ieee80211_vif *vif)
1886 {
1887 struct iwl_mvm_mc_iter_data *data = _data;
1888 struct iwl_mvm *mvm = data->mvm;
1889 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1890 int ret, len;
1891
1892 /* if we don't have free ports, mcast frames will be dropped */
1893 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1894 return;
1895
1896 if (vif->type != NL80211_IFTYPE_STATION ||
1897 !vif->bss_conf.assoc)
1898 return;
1899
1900 cmd->port_id = data->port_id++;
1901 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1902 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1903
1904 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1905 if (ret)
1906 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1907 }
1908
1909 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1910 {
1911 struct iwl_mvm_mc_iter_data iter_data = {
1912 .mvm = mvm,
1913 };
1914
1915 lockdep_assert_held(&mvm->mutex);
1916
1917 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1918 return;
1919
1920 ieee80211_iterate_active_interfaces_atomic(
1921 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1922 iwl_mvm_mc_iface_iterator, &iter_data);
1923 }
1924
1925 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1926 struct netdev_hw_addr_list *mc_list)
1927 {
1928 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1929 struct iwl_mcast_filter_cmd *cmd;
1930 struct netdev_hw_addr *addr;
1931 int addr_count;
1932 bool pass_all;
1933 int len;
1934
1935 addr_count = netdev_hw_addr_list_count(mc_list);
1936 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1937 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1938 if (pass_all)
1939 addr_count = 0;
1940
1941 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1942 cmd = kzalloc(len, GFP_ATOMIC);
1943 if (!cmd)
1944 return 0;
1945
1946 if (pass_all) {
1947 cmd->pass_all = 1;
1948 return (u64)(unsigned long)cmd;
1949 }
1950
1951 netdev_hw_addr_list_for_each(addr, mc_list) {
1952 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1953 cmd->count, addr->addr);
1954 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1955 addr->addr, ETH_ALEN);
1956 cmd->count++;
1957 }
1958
1959 return (u64)(unsigned long)cmd;
1960 }
1961
1962 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1963 unsigned int changed_flags,
1964 unsigned int *total_flags,
1965 u64 multicast)
1966 {
1967 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1968 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1969
1970 mutex_lock(&mvm->mutex);
1971
1972 /* replace previous configuration */
1973 kfree(mvm->mcast_filter_cmd);
1974 mvm->mcast_filter_cmd = cmd;
1975
1976 if (!cmd)
1977 goto out;
1978
1979 iwl_mvm_recalc_multicast(mvm);
1980 out:
1981 mutex_unlock(&mvm->mutex);
1982 *total_flags = 0;
1983 }
1984
1985 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1986 struct iwl_bcast_iter_data {
1987 struct iwl_mvm *mvm;
1988 struct iwl_bcast_filter_cmd *cmd;
1989 u8 current_filter;
1990 };
1991
1992 static void
1993 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1994 const struct iwl_fw_bcast_filter *in_filter,
1995 struct iwl_fw_bcast_filter *out_filter)
1996 {
1997 struct iwl_fw_bcast_filter_attr *attr;
1998 int i;
1999
2000 memcpy(out_filter, in_filter, sizeof(*out_filter));
2001
2002 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
2003 attr = &out_filter->attrs[i];
2004
2005 if (!attr->mask)
2006 break;
2007
2008 switch (attr->reserved1) {
2009 case cpu_to_le16(BC_FILTER_MAGIC_IP):
2010 if (vif->bss_conf.arp_addr_cnt != 1) {
2011 attr->mask = 0;
2012 continue;
2013 }
2014
2015 attr->val = vif->bss_conf.arp_addr_list[0];
2016 break;
2017 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
2018 attr->val = *(__be32 *)&vif->addr[2];
2019 break;
2020 default:
2021 break;
2022 }
2023 attr->reserved1 = 0;
2024 out_filter->num_attrs++;
2025 }
2026 }
2027
2028 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
2029 struct ieee80211_vif *vif)
2030 {
2031 struct iwl_bcast_iter_data *data = _data;
2032 struct iwl_mvm *mvm = data->mvm;
2033 struct iwl_bcast_filter_cmd *cmd = data->cmd;
2034 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2035 struct iwl_fw_bcast_mac *bcast_mac;
2036 int i;
2037
2038 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
2039 return;
2040
2041 bcast_mac = &cmd->macs[mvmvif->id];
2042
2043 /*
2044 * enable filtering only for associated stations, but not for P2P
2045 * Clients
2046 */
2047 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
2048 !vif->bss_conf.assoc)
2049 return;
2050
2051 bcast_mac->default_discard = 1;
2052
2053 /* copy all configured filters */
2054 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
2055 /*
2056 * Make sure we don't exceed our filters limit.
2057 * if there is still a valid filter to be configured,
2058 * be on the safe side and just allow bcast for this mac.
2059 */
2060 if (WARN_ON_ONCE(data->current_filter >=
2061 ARRAY_SIZE(cmd->filters))) {
2062 bcast_mac->default_discard = 0;
2063 bcast_mac->attached_filters = 0;
2064 break;
2065 }
2066
2067 iwl_mvm_set_bcast_filter(vif,
2068 &mvm->bcast_filters[i],
2069 &cmd->filters[data->current_filter]);
2070
2071 /* skip current filter if it contains no attributes */
2072 if (!cmd->filters[data->current_filter].num_attrs)
2073 continue;
2074
2075 /* attach the filter to current mac */
2076 bcast_mac->attached_filters |=
2077 cpu_to_le16(BIT(data->current_filter));
2078
2079 data->current_filter++;
2080 }
2081 }
2082
2083 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
2084 struct iwl_bcast_filter_cmd *cmd)
2085 {
2086 struct iwl_bcast_iter_data iter_data = {
2087 .mvm = mvm,
2088 .cmd = cmd,
2089 };
2090
2091 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
2092 return false;
2093
2094 memset(cmd, 0, sizeof(*cmd));
2095 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
2096 cmd->max_macs = ARRAY_SIZE(cmd->macs);
2097
2098 #ifdef CONFIG_IWLWIFI_DEBUGFS
2099 /* use debugfs filters/macs if override is configured */
2100 if (mvm->dbgfs_bcast_filtering.override) {
2101 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
2102 sizeof(cmd->filters));
2103 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
2104 sizeof(cmd->macs));
2105 return true;
2106 }
2107 #endif
2108
2109 /* if no filters are configured, do nothing */
2110 if (!mvm->bcast_filters)
2111 return false;
2112
2113 /* configure and attach these filters for each associated sta vif */
2114 ieee80211_iterate_active_interfaces(
2115 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2116 iwl_mvm_bcast_filter_iterator, &iter_data);
2117
2118 return true;
2119 }
2120 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2121 struct ieee80211_vif *vif)
2122 {
2123 struct iwl_bcast_filter_cmd cmd;
2124
2125 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
2126 return 0;
2127
2128 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
2129 return 0;
2130
2131 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
2132 sizeof(cmd), &cmd);
2133 }
2134 #else
2135 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2136 struct ieee80211_vif *vif)
2137 {
2138 return 0;
2139 }
2140 #endif
2141
2142 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2143 struct ieee80211_vif *vif,
2144 struct ieee80211_bss_conf *bss_conf,
2145 u32 changes)
2146 {
2147 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2148 int ret;
2149
2150 /*
2151 * Re-calculate the tsf id, as the master-slave relations depend on the
2152 * beacon interval, which was not known when the station interface was
2153 * added.
2154 */
2155 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
2156 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2157
2158 /*
2159 * If we're not associated yet, take the (new) BSSID before associating
2160 * so the firmware knows. If we're already associated, then use the old
2161 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2162 * branch for disassociation below.
2163 */
2164 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2165 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2166
2167 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2168 if (ret)
2169 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2170
2171 /* after sending it once, adopt mac80211 data */
2172 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2173 mvmvif->associated = bss_conf->assoc;
2174
2175 if (changes & BSS_CHANGED_ASSOC) {
2176 if (bss_conf->assoc) {
2177 /* clear statistics to get clean beacon counter */
2178 iwl_mvm_request_statistics(mvm, true);
2179 memset(&mvmvif->beacon_stats, 0,
2180 sizeof(mvmvif->beacon_stats));
2181
2182 /* add quota for this interface */
2183 ret = iwl_mvm_update_quotas(mvm, true, NULL);
2184 if (ret) {
2185 IWL_ERR(mvm, "failed to update quotas\n");
2186 return;
2187 }
2188
2189 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2190 &mvm->status)) {
2191 /*
2192 * If we're restarting then the firmware will
2193 * obviously have lost synchronisation with
2194 * the AP. It will attempt to synchronise by
2195 * itself, but we can make it more reliable by
2196 * scheduling a session protection time event.
2197 *
2198 * The firmware needs to receive a beacon to
2199 * catch up with synchronisation, use 110% of
2200 * the beacon interval.
2201 *
2202 * Set a large maximum delay to allow for more
2203 * than a single interface.
2204 */
2205 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2206 iwl_mvm_protect_session(mvm, vif, dur, dur,
2207 5 * dur, false);
2208 }
2209
2210 iwl_mvm_sf_update(mvm, vif, false);
2211 iwl_mvm_power_vif_assoc(mvm, vif);
2212 if (vif->p2p) {
2213 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2214 iwl_mvm_update_smps(mvm, vif,
2215 IWL_MVM_SMPS_REQ_PROT,
2216 IEEE80211_SMPS_DYNAMIC);
2217 }
2218 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2219 /*
2220 * If update fails - SF might be running in associated
2221 * mode while disassociated - which is forbidden.
2222 */
2223 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2224 "Failed to update SF upon disassociation\n");
2225
2226 /* remove AP station now that the MAC is unassoc */
2227 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
2228 if (ret)
2229 IWL_ERR(mvm, "failed to remove AP station\n");
2230
2231 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2232 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
2233 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
2234 /* remove quota for this interface */
2235 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2236 if (ret)
2237 IWL_ERR(mvm, "failed to update quotas\n");
2238
2239 if (vif->p2p)
2240 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2241
2242 /* this will take the cleared BSSID from bss_conf */
2243 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2244 if (ret)
2245 IWL_ERR(mvm,
2246 "failed to update MAC %pM (clear after unassoc)\n",
2247 vif->addr);
2248 }
2249
2250 iwl_mvm_recalc_multicast(mvm);
2251 iwl_mvm_configure_bcast_filter(mvm, vif);
2252
2253 /* reset rssi values */
2254 mvmvif->bf_data.ave_beacon_signal = 0;
2255
2256 iwl_mvm_bt_coex_vif_change(mvm);
2257 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2258 IEEE80211_SMPS_AUTOMATIC);
2259 } else if (changes & BSS_CHANGED_BEACON_INFO) {
2260 /*
2261 * We received a beacon _after_ association so
2262 * remove the session protection.
2263 */
2264 iwl_mvm_remove_time_event(mvm, mvmvif,
2265 &mvmvif->time_event_data);
2266 }
2267
2268 if (changes & BSS_CHANGED_BEACON_INFO) {
2269 iwl_mvm_sf_update(mvm, vif, false);
2270 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2271 }
2272
2273 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
2274 ret = iwl_mvm_power_update_mac(mvm);
2275 if (ret)
2276 IWL_ERR(mvm, "failed to update power mode\n");
2277 }
2278
2279 if (changes & BSS_CHANGED_TXPOWER) {
2280 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2281 bss_conf->txpower);
2282 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2283 }
2284
2285 if (changes & BSS_CHANGED_CQM) {
2286 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2287 /* reset cqm events tracking */
2288 mvmvif->bf_data.last_cqm_event = 0;
2289 if (mvmvif->bf_data.bf_enabled) {
2290 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2291 if (ret)
2292 IWL_ERR(mvm,
2293 "failed to update CQM thresholds\n");
2294 }
2295 }
2296
2297 if (changes & BSS_CHANGED_ARP_FILTER) {
2298 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2299 iwl_mvm_configure_bcast_filter(mvm, vif);
2300 }
2301 }
2302
2303 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2304 struct ieee80211_vif *vif)
2305 {
2306 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2307 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2308 int ret;
2309
2310 /*
2311 * iwl_mvm_mac_ctxt_add() might read directly from the device
2312 * (the system time), so make sure it is available.
2313 */
2314 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2315 if (ret)
2316 return ret;
2317
2318 mutex_lock(&mvm->mutex);
2319
2320 /* Send the beacon template */
2321 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2322 if (ret)
2323 goto out_unlock;
2324
2325 /*
2326 * Re-calculate the tsf id, as the master-slave relations depend on the
2327 * beacon interval, which was not known when the AP interface was added.
2328 */
2329 if (vif->type == NL80211_IFTYPE_AP)
2330 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2331
2332 mvmvif->ap_assoc_sta_count = 0;
2333
2334 /* Add the mac context */
2335 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2336 if (ret)
2337 goto out_unlock;
2338
2339 /* Perform the binding */
2340 ret = iwl_mvm_binding_add_vif(mvm, vif);
2341 if (ret)
2342 goto out_remove;
2343
2344 /* Send the bcast station. At this stage the TBTT and DTIM time events
2345 * are added and applied to the scheduler */
2346 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2347 if (ret)
2348 goto out_unbind;
2349
2350 /* must be set before quota calculations */
2351 mvmvif->ap_ibss_active = true;
2352
2353 /* power updated needs to be done before quotas */
2354 iwl_mvm_power_update_mac(mvm);
2355
2356 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2357 if (ret)
2358 goto out_quota_failed;
2359
2360 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2361 if (vif->p2p && mvm->p2p_device_vif)
2362 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2363
2364 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2365
2366 iwl_mvm_bt_coex_vif_change(mvm);
2367
2368 /* we don't support TDLS during DCM */
2369 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2370 iwl_mvm_teardown_tdls_peers(mvm);
2371
2372 goto out_unlock;
2373
2374 out_quota_failed:
2375 iwl_mvm_power_update_mac(mvm);
2376 mvmvif->ap_ibss_active = false;
2377 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2378 out_unbind:
2379 iwl_mvm_binding_remove_vif(mvm, vif);
2380 out_remove:
2381 iwl_mvm_mac_ctxt_remove(mvm, vif);
2382 out_unlock:
2383 mutex_unlock(&mvm->mutex);
2384 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2385 return ret;
2386 }
2387
2388 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2389 struct ieee80211_vif *vif)
2390 {
2391 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2392 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2393
2394 iwl_mvm_prepare_mac_removal(mvm, vif);
2395
2396 mutex_lock(&mvm->mutex);
2397
2398 /* Handle AP stop while in CSA */
2399 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2400 iwl_mvm_remove_time_event(mvm, mvmvif,
2401 &mvmvif->time_event_data);
2402 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2403 }
2404
2405 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2406 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2407 mvm->csa_tx_block_bcn_timeout = 0;
2408 }
2409
2410 mvmvif->ap_ibss_active = false;
2411 mvm->ap_last_beacon_gp2 = 0;
2412
2413 iwl_mvm_bt_coex_vif_change(mvm);
2414
2415 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2416
2417 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2418 if (vif->p2p && mvm->p2p_device_vif)
2419 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2420
2421 iwl_mvm_update_quotas(mvm, false, NULL);
2422 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2423 iwl_mvm_binding_remove_vif(mvm, vif);
2424
2425 iwl_mvm_power_update_mac(mvm);
2426
2427 iwl_mvm_mac_ctxt_remove(mvm, vif);
2428
2429 mutex_unlock(&mvm->mutex);
2430 }
2431
2432 static void
2433 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2434 struct ieee80211_vif *vif,
2435 struct ieee80211_bss_conf *bss_conf,
2436 u32 changes)
2437 {
2438 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2439
2440 /* Changes will be applied when the AP/IBSS is started */
2441 if (!mvmvif->ap_ibss_active)
2442 return;
2443
2444 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2445 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2446 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2447 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2448
2449 /* Need to send a new beacon template to the FW */
2450 if (changes & BSS_CHANGED_BEACON &&
2451 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2452 IWL_WARN(mvm, "Failed updating beacon data\n");
2453
2454 if (changes & BSS_CHANGED_TXPOWER) {
2455 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2456 bss_conf->txpower);
2457 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2458 }
2459
2460 }
2461
2462 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2463 struct ieee80211_vif *vif,
2464 struct ieee80211_bss_conf *bss_conf,
2465 u32 changes)
2466 {
2467 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2468
2469 /*
2470 * iwl_mvm_bss_info_changed_station() might call
2471 * iwl_mvm_protect_session(), which reads directly from
2472 * the device (the system time), so make sure it is available.
2473 */
2474 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2475 return;
2476
2477 mutex_lock(&mvm->mutex);
2478
2479 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2480 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2481
2482 switch (vif->type) {
2483 case NL80211_IFTYPE_STATION:
2484 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2485 break;
2486 case NL80211_IFTYPE_AP:
2487 case NL80211_IFTYPE_ADHOC:
2488 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2489 break;
2490 default:
2491 /* shouldn't happen */
2492 WARN_ON_ONCE(1);
2493 }
2494
2495 mutex_unlock(&mvm->mutex);
2496 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2497 }
2498
2499 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2500 struct ieee80211_vif *vif,
2501 struct ieee80211_scan_request *hw_req)
2502 {
2503 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2504 int ret;
2505
2506 if (hw_req->req.n_channels == 0 ||
2507 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2508 return -EINVAL;
2509
2510 mutex_lock(&mvm->mutex);
2511 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2512 mutex_unlock(&mvm->mutex);
2513
2514 return ret;
2515 }
2516
2517 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2518 struct ieee80211_vif *vif)
2519 {
2520 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2521
2522 mutex_lock(&mvm->mutex);
2523
2524 /* Due to a race condition, it's possible that mac80211 asks
2525 * us to stop a hw_scan when it's already stopped. This can
2526 * happen, for instance, if we stopped the scan ourselves,
2527 * called ieee80211_scan_completed() and the userspace called
2528 * cancel scan scan before ieee80211_scan_work() could run.
2529 * To handle that, simply return if the scan is not running.
2530 */
2531 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2532 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2533
2534 mutex_unlock(&mvm->mutex);
2535 }
2536
2537 static void
2538 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2539 struct ieee80211_sta *sta, u16 tids,
2540 int num_frames,
2541 enum ieee80211_frame_release_type reason,
2542 bool more_data)
2543 {
2544 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2545
2546 /* Called when we need to transmit (a) frame(s) from mac80211 */
2547
2548 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2549 tids, more_data, false);
2550 }
2551
2552 static void
2553 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2554 struct ieee80211_sta *sta, u16 tids,
2555 int num_frames,
2556 enum ieee80211_frame_release_type reason,
2557 bool more_data)
2558 {
2559 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2560
2561 /* Called when we need to transmit (a) frame(s) from agg queue */
2562
2563 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2564 tids, more_data, true);
2565 }
2566
2567 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2568 struct ieee80211_vif *vif,
2569 enum sta_notify_cmd cmd,
2570 struct ieee80211_sta *sta)
2571 {
2572 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2573 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2574 unsigned long txqs = 0, tids = 0;
2575 int tid;
2576
2577 spin_lock_bh(&mvmsta->lock);
2578 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2579 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2580
2581 if (tid_data->state != IWL_AGG_ON &&
2582 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2583 continue;
2584
2585 __set_bit(tid_data->txq_id, &txqs);
2586
2587 if (iwl_mvm_tid_queued(tid_data) == 0)
2588 continue;
2589
2590 __set_bit(tid, &tids);
2591 }
2592
2593 switch (cmd) {
2594 case STA_NOTIFY_SLEEP:
2595 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2596 ieee80211_sta_block_awake(hw, sta, true);
2597
2598 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2599 ieee80211_sta_set_buffered(sta, tid, true);
2600
2601 if (txqs)
2602 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2603 /*
2604 * The fw updates the STA to be asleep. Tx packets on the Tx
2605 * queues to this station will not be transmitted. The fw will
2606 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2607 */
2608 break;
2609 case STA_NOTIFY_AWAKE:
2610 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2611 break;
2612
2613 if (txqs)
2614 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2615 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2616 break;
2617 default:
2618 break;
2619 }
2620 spin_unlock_bh(&mvmsta->lock);
2621 }
2622
2623 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2624 struct ieee80211_vif *vif,
2625 struct ieee80211_sta *sta)
2626 {
2627 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2628 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2629 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2630
2631 /*
2632 * This is called before mac80211 does RCU synchronisation,
2633 * so here we already invalidate our internal RCU-protected
2634 * station pointer. The rest of the code will thus no longer
2635 * be able to find the station this way, and we don't rely
2636 * on further RCU synchronisation after the sta_state()
2637 * callback deleted the station.
2638 */
2639 mutex_lock(&mvm->mutex);
2640 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2641 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2642 ERR_PTR(-ENOENT));
2643
2644 if (mvm_sta->vif->type == NL80211_IFTYPE_AP) {
2645 mvmvif->ap_assoc_sta_count--;
2646 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2647 }
2648
2649 mutex_unlock(&mvm->mutex);
2650 }
2651
2652 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2653 const u8 *bssid)
2654 {
2655 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2656 return;
2657
2658 if (iwlwifi_mod_params.uapsd_disable) {
2659 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2660 return;
2661 }
2662
2663 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2664 }
2665
2666 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2667 struct ieee80211_vif *vif,
2668 struct ieee80211_sta *sta,
2669 enum ieee80211_sta_state old_state,
2670 enum ieee80211_sta_state new_state)
2671 {
2672 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2673 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2674 int ret;
2675
2676 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2677 sta->addr, old_state, new_state);
2678
2679 /* this would be a mac80211 bug ... but don't crash */
2680 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2681 return -EINVAL;
2682
2683 /* if a STA is being removed, reuse its ID */
2684 flush_work(&mvm->sta_drained_wk);
2685
2686 mutex_lock(&mvm->mutex);
2687 if (old_state == IEEE80211_STA_NOTEXIST &&
2688 new_state == IEEE80211_STA_NONE) {
2689 /*
2690 * Firmware bug - it'll crash if the beacon interval is less
2691 * than 16. We can't avoid connecting at all, so refuse the
2692 * station state change, this will cause mac80211 to abandon
2693 * attempts to connect to this AP, and eventually wpa_s will
2694 * blacklist the AP...
2695 */
2696 if (vif->type == NL80211_IFTYPE_STATION &&
2697 vif->bss_conf.beacon_int < 16) {
2698 IWL_ERR(mvm,
2699 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2700 sta->addr, vif->bss_conf.beacon_int);
2701 ret = -EINVAL;
2702 goto out_unlock;
2703 }
2704
2705 if (sta->tdls &&
2706 (vif->p2p ||
2707 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2708 IWL_MVM_TDLS_STA_COUNT ||
2709 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2710 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2711 ret = -EBUSY;
2712 goto out_unlock;
2713 }
2714
2715 ret = iwl_mvm_add_sta(mvm, vif, sta);
2716 if (sta->tdls && ret == 0)
2717 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2718 } else if (old_state == IEEE80211_STA_NONE &&
2719 new_state == IEEE80211_STA_AUTH) {
2720 /*
2721 * EBS may be disabled due to previous failures reported by FW.
2722 * Reset EBS status here assuming environment has been changed.
2723 */
2724 mvm->last_ebs_successful = true;
2725 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2726 ret = 0;
2727 } else if (old_state == IEEE80211_STA_AUTH &&
2728 new_state == IEEE80211_STA_ASSOC) {
2729 ret = iwl_mvm_update_sta(mvm, vif, sta);
2730 if (ret == 0)
2731 iwl_mvm_rs_rate_init(mvm, sta,
2732 mvmvif->phy_ctxt->channel->band,
2733 true);
2734 } else if (old_state == IEEE80211_STA_ASSOC &&
2735 new_state == IEEE80211_STA_AUTHORIZED) {
2736
2737 /* we don't support TDLS during DCM */
2738 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2739 iwl_mvm_teardown_tdls_peers(mvm);
2740
2741 /* enable beacon filtering */
2742 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2743 ret = 0;
2744 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2745 new_state == IEEE80211_STA_ASSOC) {
2746 /* disable beacon filtering */
2747 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2748 ret = 0;
2749 } else if (old_state == IEEE80211_STA_ASSOC &&
2750 new_state == IEEE80211_STA_AUTH) {
2751 ret = 0;
2752 } else if (old_state == IEEE80211_STA_AUTH &&
2753 new_state == IEEE80211_STA_NONE) {
2754 ret = 0;
2755 } else if (old_state == IEEE80211_STA_NONE &&
2756 new_state == IEEE80211_STA_NOTEXIST) {
2757 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2758 if (sta->tdls)
2759 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2760 } else {
2761 ret = -EIO;
2762 }
2763 out_unlock:
2764 mutex_unlock(&mvm->mutex);
2765
2766 if (sta->tdls && ret == 0) {
2767 if (old_state == IEEE80211_STA_NOTEXIST &&
2768 new_state == IEEE80211_STA_NONE)
2769 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2770 else if (old_state == IEEE80211_STA_NONE &&
2771 new_state == IEEE80211_STA_NOTEXIST)
2772 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2773 }
2774
2775 return ret;
2776 }
2777
2778 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2779 {
2780 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2781
2782 mvm->rts_threshold = value;
2783
2784 return 0;
2785 }
2786
2787 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2788 struct ieee80211_vif *vif,
2789 struct ieee80211_sta *sta, u32 changed)
2790 {
2791 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2792
2793 if (vif->type == NL80211_IFTYPE_STATION &&
2794 changed & IEEE80211_RC_NSS_CHANGED)
2795 iwl_mvm_sf_update(mvm, vif, false);
2796 }
2797
2798 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2799 struct ieee80211_vif *vif, u16 ac,
2800 const struct ieee80211_tx_queue_params *params)
2801 {
2802 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2803 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2804
2805 mvmvif->queue_params[ac] = *params;
2806
2807 /*
2808 * No need to update right away, we'll get BSS_CHANGED_QOS
2809 * The exception is P2P_DEVICE interface which needs immediate update.
2810 */
2811 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2812 int ret;
2813
2814 mutex_lock(&mvm->mutex);
2815 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2816 mutex_unlock(&mvm->mutex);
2817 return ret;
2818 }
2819 return 0;
2820 }
2821
2822 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2823 struct ieee80211_vif *vif)
2824 {
2825 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2826 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2827 200 + vif->bss_conf.beacon_int);
2828 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2829 100 + vif->bss_conf.beacon_int);
2830
2831 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2832 return;
2833
2834 /*
2835 * iwl_mvm_protect_session() reads directly from the device
2836 * (the system time), so make sure it is available.
2837 */
2838 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2839 return;
2840
2841 mutex_lock(&mvm->mutex);
2842 /* Try really hard to protect the session and hear a beacon */
2843 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2844 mutex_unlock(&mvm->mutex);
2845
2846 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2847 }
2848
2849 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2850 struct ieee80211_vif *vif,
2851 struct cfg80211_sched_scan_request *req,
2852 struct ieee80211_scan_ies *ies)
2853 {
2854 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2855
2856 int ret;
2857
2858 mutex_lock(&mvm->mutex);
2859
2860 if (!vif->bss_conf.idle) {
2861 ret = -EBUSY;
2862 goto out;
2863 }
2864
2865 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2866
2867 out:
2868 mutex_unlock(&mvm->mutex);
2869 return ret;
2870 }
2871
2872 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2873 struct ieee80211_vif *vif)
2874 {
2875 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2876 int ret;
2877
2878 mutex_lock(&mvm->mutex);
2879
2880 /* Due to a race condition, it's possible that mac80211 asks
2881 * us to stop a sched_scan when it's already stopped. This
2882 * can happen, for instance, if we stopped the scan ourselves,
2883 * called ieee80211_sched_scan_stopped() and the userspace called
2884 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2885 * could run. To handle this, simply return if the scan is
2886 * not running.
2887 */
2888 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2889 mutex_unlock(&mvm->mutex);
2890 return 0;
2891 }
2892
2893 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2894 mutex_unlock(&mvm->mutex);
2895 iwl_mvm_wait_for_async_handlers(mvm);
2896
2897 return ret;
2898 }
2899
2900 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2901 enum set_key_cmd cmd,
2902 struct ieee80211_vif *vif,
2903 struct ieee80211_sta *sta,
2904 struct ieee80211_key_conf *key)
2905 {
2906 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2907 int ret;
2908
2909 if (iwlwifi_mod_params.sw_crypto) {
2910 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2911 return -EOPNOTSUPP;
2912 }
2913
2914 switch (key->cipher) {
2915 case WLAN_CIPHER_SUITE_TKIP:
2916 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2917 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2918 break;
2919 case WLAN_CIPHER_SUITE_CCMP:
2920 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2921 break;
2922 case WLAN_CIPHER_SUITE_AES_CMAC:
2923 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2924 break;
2925 case WLAN_CIPHER_SUITE_WEP40:
2926 case WLAN_CIPHER_SUITE_WEP104:
2927 /* For non-client mode, only use WEP keys for TX as we probably
2928 * don't have a station yet anyway and would then have to keep
2929 * track of the keys, linking them to each of the clients/peers
2930 * as they appear. For now, don't do that, for performance WEP
2931 * offload doesn't really matter much, but we need it for some
2932 * other offload features in client mode.
2933 */
2934 if (vif->type != NL80211_IFTYPE_STATION)
2935 return 0;
2936 break;
2937 default:
2938 /* currently FW supports only one optional cipher scheme */
2939 if (hw->n_cipher_schemes &&
2940 hw->cipher_schemes->cipher == key->cipher)
2941 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2942 else
2943 return -EOPNOTSUPP;
2944 }
2945
2946 mutex_lock(&mvm->mutex);
2947
2948 switch (cmd) {
2949 case SET_KEY:
2950 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2951 vif->type == NL80211_IFTYPE_AP) && !sta) {
2952 /*
2953 * GTK on AP interface is a TX-only key, return 0;
2954 * on IBSS they're per-station and because we're lazy
2955 * we don't support them for RX, so do the same.
2956 */
2957 ret = 0;
2958 key->hw_key_idx = STA_KEY_IDX_INVALID;
2959 break;
2960 }
2961
2962 /* During FW restart, in order to restore the state as it was,
2963 * don't try to reprogram keys we previously failed for.
2964 */
2965 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2966 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2967 IWL_DEBUG_MAC80211(mvm,
2968 "skip invalid idx key programming during restart\n");
2969 ret = 0;
2970 break;
2971 }
2972
2973 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2974 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key,
2975 test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2976 &mvm->status));
2977 if (ret) {
2978 IWL_WARN(mvm, "set key failed\n");
2979 /*
2980 * can't add key for RX, but we don't need it
2981 * in the device for TX so still return 0
2982 */
2983 key->hw_key_idx = STA_KEY_IDX_INVALID;
2984 ret = 0;
2985 }
2986
2987 break;
2988 case DISABLE_KEY:
2989 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2990 ret = 0;
2991 break;
2992 }
2993
2994 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2995 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2996 break;
2997 default:
2998 ret = -EINVAL;
2999 }
3000
3001 mutex_unlock(&mvm->mutex);
3002 return ret;
3003 }
3004
3005 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3006 struct ieee80211_vif *vif,
3007 struct ieee80211_key_conf *keyconf,
3008 struct ieee80211_sta *sta,
3009 u32 iv32, u16 *phase1key)
3010 {
3011 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3012
3013 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3014 return;
3015
3016 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3017 }
3018
3019
3020 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3021 struct iwl_rx_packet *pkt, void *data)
3022 {
3023 struct iwl_mvm *mvm =
3024 container_of(notif_wait, struct iwl_mvm, notif_wait);
3025 struct iwl_hs20_roc_res *resp;
3026 int resp_len = iwl_rx_packet_payload_len(pkt);
3027 struct iwl_mvm_time_event_data *te_data = data;
3028
3029 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3030 return true;
3031
3032 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3033 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3034 return true;
3035 }
3036
3037 resp = (void *)pkt->data;
3038
3039 IWL_DEBUG_TE(mvm,
3040 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3041 resp->status, resp->event_unique_id);
3042
3043 te_data->uid = le32_to_cpu(resp->event_unique_id);
3044 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3045 te_data->uid);
3046
3047 spin_lock_bh(&mvm->time_event_lock);
3048 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3049 spin_unlock_bh(&mvm->time_event_lock);
3050
3051 return true;
3052 }
3053
3054 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 200
3055 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3056 struct ieee80211_channel *channel,
3057 struct ieee80211_vif *vif,
3058 int duration)
3059 {
3060 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3061 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3062 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3063 static const u16 time_event_response[] = { HOT_SPOT_CMD };
3064 struct iwl_notification_wait wait_time_event;
3065 struct iwl_hs20_roc_req aux_roc_req = {
3066 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3067 .id_and_color =
3068 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3069 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3070 /* Set the channel info data */
3071 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
3072 PHY_BAND_24 : PHY_BAND_5,
3073 .channel_info.channel = channel->hw_value,
3074 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3075 /* Set the time and duration */
3076 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3077 .apply_time_max_delay =
3078 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
3079 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
3080 };
3081
3082 /* Set the node address */
3083 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3084
3085 lockdep_assert_held(&mvm->mutex);
3086
3087 spin_lock_bh(&mvm->time_event_lock);
3088
3089 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3090 spin_unlock_bh(&mvm->time_event_lock);
3091 return -EIO;
3092 }
3093
3094 te_data->vif = vif;
3095 te_data->duration = duration;
3096 te_data->id = HOT_SPOT_CMD;
3097
3098 spin_unlock_bh(&mvm->time_event_lock);
3099
3100 /*
3101 * Use a notification wait, which really just processes the
3102 * command response and doesn't wait for anything, in order
3103 * to be able to process the response and get the UID inside
3104 * the RX path. Using CMD_WANT_SKB doesn't work because it
3105 * stores the buffer and then wakes up this thread, by which
3106 * time another notification (that the time event started)
3107 * might already be processed unsuccessfully.
3108 */
3109 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3110 time_event_response,
3111 ARRAY_SIZE(time_event_response),
3112 iwl_mvm_rx_aux_roc, te_data);
3113
3114 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3115 &aux_roc_req);
3116
3117 if (res) {
3118 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3119 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3120 goto out_clear_te;
3121 }
3122
3123 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3124 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3125 /* should never fail */
3126 WARN_ON_ONCE(res);
3127
3128 if (res) {
3129 out_clear_te:
3130 spin_lock_bh(&mvm->time_event_lock);
3131 iwl_mvm_te_clear_data(mvm, te_data);
3132 spin_unlock_bh(&mvm->time_event_lock);
3133 }
3134
3135 return res;
3136 }
3137
3138 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3139 struct ieee80211_vif *vif,
3140 struct ieee80211_channel *channel,
3141 int duration,
3142 enum ieee80211_roc_type type)
3143 {
3144 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3145 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3146 struct cfg80211_chan_def chandef;
3147 struct iwl_mvm_phy_ctxt *phy_ctxt;
3148 int ret, i;
3149
3150 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3151 duration, type);
3152
3153 flush_work(&mvm->roc_done_wk);
3154
3155 mutex_lock(&mvm->mutex);
3156
3157 switch (vif->type) {
3158 case NL80211_IFTYPE_STATION:
3159 if (fw_has_capa(&mvm->fw->ucode_capa,
3160 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3161 /* Use aux roc framework (HS20) */
3162 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3163 vif, duration);
3164 goto out_unlock;
3165 }
3166 IWL_ERR(mvm, "hotspot not supported\n");
3167 ret = -EINVAL;
3168 goto out_unlock;
3169 case NL80211_IFTYPE_P2P_DEVICE:
3170 /* handle below */
3171 break;
3172 default:
3173 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3174 ret = -EINVAL;
3175 goto out_unlock;
3176 }
3177
3178 for (i = 0; i < NUM_PHY_CTX; i++) {
3179 phy_ctxt = &mvm->phy_ctxts[i];
3180 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3181 continue;
3182
3183 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3184 /*
3185 * Unbind the P2P_DEVICE from the current PHY context,
3186 * and if the PHY context is not used remove it.
3187 */
3188 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3189 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3190 goto out_unlock;
3191
3192 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3193
3194 /* Bind the P2P_DEVICE to the current PHY Context */
3195 mvmvif->phy_ctxt = phy_ctxt;
3196
3197 ret = iwl_mvm_binding_add_vif(mvm, vif);
3198 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3199 goto out_unlock;
3200
3201 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3202 goto schedule_time_event;
3203 }
3204 }
3205
3206 /* Need to update the PHY context only if the ROC channel changed */
3207 if (channel == mvmvif->phy_ctxt->channel)
3208 goto schedule_time_event;
3209
3210 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3211
3212 /*
3213 * Change the PHY context configuration as it is currently referenced
3214 * only by the P2P Device MAC
3215 */
3216 if (mvmvif->phy_ctxt->ref == 1) {
3217 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3218 &chandef, 1, 1);
3219 if (ret)
3220 goto out_unlock;
3221 } else {
3222 /*
3223 * The PHY context is shared with other MACs. Need to remove the
3224 * P2P Device from the binding, allocate an new PHY context and
3225 * create a new binding
3226 */
3227 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3228 if (!phy_ctxt) {
3229 ret = -ENOSPC;
3230 goto out_unlock;
3231 }
3232
3233 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3234 1, 1);
3235 if (ret) {
3236 IWL_ERR(mvm, "Failed to change PHY context\n");
3237 goto out_unlock;
3238 }
3239
3240 /* Unbind the P2P_DEVICE from the current PHY context */
3241 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3242 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3243 goto out_unlock;
3244
3245 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3246
3247 /* Bind the P2P_DEVICE to the new allocated PHY context */
3248 mvmvif->phy_ctxt = phy_ctxt;
3249
3250 ret = iwl_mvm_binding_add_vif(mvm, vif);
3251 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3252 goto out_unlock;
3253
3254 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3255 }
3256
3257 schedule_time_event:
3258 /* Schedule the time events */
3259 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3260
3261 out_unlock:
3262 mutex_unlock(&mvm->mutex);
3263 IWL_DEBUG_MAC80211(mvm, "leave\n");
3264 return ret;
3265 }
3266
3267 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3268 {
3269 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3270
3271 IWL_DEBUG_MAC80211(mvm, "enter\n");
3272
3273 mutex_lock(&mvm->mutex);
3274 iwl_mvm_stop_roc(mvm);
3275 mutex_unlock(&mvm->mutex);
3276
3277 IWL_DEBUG_MAC80211(mvm, "leave\n");
3278 return 0;
3279 }
3280
3281 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3282 struct ieee80211_chanctx_conf *ctx)
3283 {
3284 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3285 struct iwl_mvm_phy_ctxt *phy_ctxt;
3286 int ret;
3287
3288 lockdep_assert_held(&mvm->mutex);
3289
3290 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3291
3292 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3293 if (!phy_ctxt) {
3294 ret = -ENOSPC;
3295 goto out;
3296 }
3297
3298 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3299 ctx->rx_chains_static,
3300 ctx->rx_chains_dynamic);
3301 if (ret) {
3302 IWL_ERR(mvm, "Failed to add PHY context\n");
3303 goto out;
3304 }
3305
3306 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3307 *phy_ctxt_id = phy_ctxt->id;
3308 out:
3309 return ret;
3310 }
3311
3312 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3313 struct ieee80211_chanctx_conf *ctx)
3314 {
3315 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3316 int ret;
3317
3318 mutex_lock(&mvm->mutex);
3319 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3320 mutex_unlock(&mvm->mutex);
3321
3322 return ret;
3323 }
3324
3325 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3326 struct ieee80211_chanctx_conf *ctx)
3327 {
3328 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3329 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3330
3331 lockdep_assert_held(&mvm->mutex);
3332
3333 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3334 }
3335
3336 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3337 struct ieee80211_chanctx_conf *ctx)
3338 {
3339 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3340
3341 mutex_lock(&mvm->mutex);
3342 __iwl_mvm_remove_chanctx(mvm, ctx);
3343 mutex_unlock(&mvm->mutex);
3344 }
3345
3346 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3347 struct ieee80211_chanctx_conf *ctx,
3348 u32 changed)
3349 {
3350 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3351 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3352 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3353
3354 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3355 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3356 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3357 IEEE80211_CHANCTX_CHANGE_RADAR |
3358 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3359 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3360 phy_ctxt->ref, changed))
3361 return;
3362
3363 mutex_lock(&mvm->mutex);
3364 iwl_mvm_bt_coex_vif_change(mvm);
3365 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3366 ctx->rx_chains_static,
3367 ctx->rx_chains_dynamic);
3368 mutex_unlock(&mvm->mutex);
3369 }
3370
3371 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3372 struct ieee80211_vif *vif,
3373 struct ieee80211_chanctx_conf *ctx,
3374 bool switching_chanctx)
3375 {
3376 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3377 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3378 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3379 int ret;
3380
3381 lockdep_assert_held(&mvm->mutex);
3382
3383 mvmvif->phy_ctxt = phy_ctxt;
3384
3385 switch (vif->type) {
3386 case NL80211_IFTYPE_AP:
3387 /* only needed if we're switching chanctx (i.e. during CSA) */
3388 if (switching_chanctx) {
3389 mvmvif->ap_ibss_active = true;
3390 break;
3391 }
3392 case NL80211_IFTYPE_ADHOC:
3393 /*
3394 * The AP binding flow is handled as part of the start_ap flow
3395 * (in bss_info_changed), similarly for IBSS.
3396 */
3397 ret = 0;
3398 goto out;
3399 case NL80211_IFTYPE_STATION:
3400 break;
3401 case NL80211_IFTYPE_MONITOR:
3402 /* always disable PS when a monitor interface is active */
3403 mvmvif->ps_disabled = true;
3404 break;
3405 default:
3406 ret = -EINVAL;
3407 goto out;
3408 }
3409
3410 ret = iwl_mvm_binding_add_vif(mvm, vif);
3411 if (ret)
3412 goto out;
3413
3414 /*
3415 * Power state must be updated before quotas,
3416 * otherwise fw will complain.
3417 */
3418 iwl_mvm_power_update_mac(mvm);
3419
3420 /* Setting the quota at this stage is only required for monitor
3421 * interfaces. For the other types, the bss_info changed flow
3422 * will handle quota settings.
3423 */
3424 if (vif->type == NL80211_IFTYPE_MONITOR) {
3425 mvmvif->monitor_active = true;
3426 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3427 if (ret)
3428 goto out_remove_binding;
3429 }
3430
3431 /* Handle binding during CSA */
3432 if (vif->type == NL80211_IFTYPE_AP) {
3433 iwl_mvm_update_quotas(mvm, false, NULL);
3434 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3435 }
3436
3437 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3438 u32 duration = 2 * vif->bss_conf.beacon_int;
3439
3440 /* iwl_mvm_protect_session() reads directly from the
3441 * device (the system time), so make sure it is
3442 * available.
3443 */
3444 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3445 if (ret)
3446 goto out_remove_binding;
3447
3448 /* Protect the session to make sure we hear the first
3449 * beacon on the new channel.
3450 */
3451 iwl_mvm_protect_session(mvm, vif, duration, duration,
3452 vif->bss_conf.beacon_int / 2,
3453 true);
3454
3455 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3456
3457 iwl_mvm_update_quotas(mvm, false, NULL);
3458 }
3459
3460 goto out;
3461
3462 out_remove_binding:
3463 iwl_mvm_binding_remove_vif(mvm, vif);
3464 iwl_mvm_power_update_mac(mvm);
3465 out:
3466 if (ret)
3467 mvmvif->phy_ctxt = NULL;
3468 return ret;
3469 }
3470 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3471 struct ieee80211_vif *vif,
3472 struct ieee80211_chanctx_conf *ctx)
3473 {
3474 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3475 int ret;
3476
3477 mutex_lock(&mvm->mutex);
3478 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3479 mutex_unlock(&mvm->mutex);
3480
3481 return ret;
3482 }
3483
3484 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3485 struct ieee80211_vif *vif,
3486 struct ieee80211_chanctx_conf *ctx,
3487 bool switching_chanctx)
3488 {
3489 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3490 struct ieee80211_vif *disabled_vif = NULL;
3491
3492 lockdep_assert_held(&mvm->mutex);
3493
3494 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3495
3496 switch (vif->type) {
3497 case NL80211_IFTYPE_ADHOC:
3498 goto out;
3499 case NL80211_IFTYPE_MONITOR:
3500 mvmvif->monitor_active = false;
3501 mvmvif->ps_disabled = false;
3502 break;
3503 case NL80211_IFTYPE_AP:
3504 /* This part is triggered only during CSA */
3505 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3506 goto out;
3507
3508 mvmvif->csa_countdown = false;
3509
3510 /* Set CS bit on all the stations */
3511 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3512
3513 /* Save blocked iface, the timeout is set on the next beacon */
3514 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3515
3516 mvmvif->ap_ibss_active = false;
3517 break;
3518 case NL80211_IFTYPE_STATION:
3519 if (!switching_chanctx)
3520 break;
3521
3522 disabled_vif = vif;
3523
3524 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3525 break;
3526 default:
3527 break;
3528 }
3529
3530 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3531 iwl_mvm_binding_remove_vif(mvm, vif);
3532
3533 out:
3534 mvmvif->phy_ctxt = NULL;
3535 iwl_mvm_power_update_mac(mvm);
3536 }
3537
3538 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3539 struct ieee80211_vif *vif,
3540 struct ieee80211_chanctx_conf *ctx)
3541 {
3542 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3543
3544 mutex_lock(&mvm->mutex);
3545 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3546 mutex_unlock(&mvm->mutex);
3547 }
3548
3549 static int
3550 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3551 struct ieee80211_vif_chanctx_switch *vifs)
3552 {
3553 int ret;
3554
3555 mutex_lock(&mvm->mutex);
3556 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3557 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3558
3559 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3560 if (ret) {
3561 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3562 goto out_reassign;
3563 }
3564
3565 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3566 true);
3567 if (ret) {
3568 IWL_ERR(mvm,
3569 "failed to assign new_ctx during channel switch\n");
3570 goto out_remove;
3571 }
3572
3573 /* we don't support TDLS during DCM - can be caused by channel switch */
3574 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3575 iwl_mvm_teardown_tdls_peers(mvm);
3576
3577 goto out;
3578
3579 out_remove:
3580 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3581
3582 out_reassign:
3583 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3584 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3585 goto out_restart;
3586 }
3587
3588 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3589 true)) {
3590 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3591 goto out_restart;
3592 }
3593
3594 goto out;
3595
3596 out_restart:
3597 /* things keep failing, better restart the hw */
3598 iwl_mvm_nic_restart(mvm, false);
3599
3600 out:
3601 mutex_unlock(&mvm->mutex);
3602
3603 return ret;
3604 }
3605
3606 static int
3607 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3608 struct ieee80211_vif_chanctx_switch *vifs)
3609 {
3610 int ret;
3611
3612 mutex_lock(&mvm->mutex);
3613 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3614
3615 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3616 true);
3617 if (ret) {
3618 IWL_ERR(mvm,
3619 "failed to assign new_ctx during channel switch\n");
3620 goto out_reassign;
3621 }
3622
3623 goto out;
3624
3625 out_reassign:
3626 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3627 true)) {
3628 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3629 goto out_restart;
3630 }
3631
3632 goto out;
3633
3634 out_restart:
3635 /* things keep failing, better restart the hw */
3636 iwl_mvm_nic_restart(mvm, false);
3637
3638 out:
3639 mutex_unlock(&mvm->mutex);
3640
3641 return ret;
3642 }
3643
3644 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3645 struct ieee80211_vif_chanctx_switch *vifs,
3646 int n_vifs,
3647 enum ieee80211_chanctx_switch_mode mode)
3648 {
3649 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3650 int ret;
3651
3652 /* we only support a single-vif right now */
3653 if (n_vifs > 1)
3654 return -EOPNOTSUPP;
3655
3656 switch (mode) {
3657 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3658 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3659 break;
3660 case CHANCTX_SWMODE_REASSIGN_VIF:
3661 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3662 break;
3663 default:
3664 ret = -EOPNOTSUPP;
3665 break;
3666 }
3667
3668 return ret;
3669 }
3670
3671 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3672 struct ieee80211_sta *sta,
3673 bool set)
3674 {
3675 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3676 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3677
3678 if (!mvm_sta || !mvm_sta->vif) {
3679 IWL_ERR(mvm, "Station is not associated to a vif\n");
3680 return -EINVAL;
3681 }
3682
3683 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3684 }
3685
3686 #ifdef CONFIG_NL80211_TESTMODE
3687 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3688 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3689 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3690 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3691 };
3692
3693 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3694 struct ieee80211_vif *vif,
3695 void *data, int len)
3696 {
3697 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3698 int err;
3699 u32 noa_duration;
3700
3701 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3702 if (err)
3703 return err;
3704
3705 if (!tb[IWL_MVM_TM_ATTR_CMD])
3706 return -EINVAL;
3707
3708 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3709 case IWL_MVM_TM_CMD_SET_NOA:
3710 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3711 !vif->bss_conf.enable_beacon ||
3712 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3713 return -EINVAL;
3714
3715 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3716 if (noa_duration >= vif->bss_conf.beacon_int)
3717 return -EINVAL;
3718
3719 mvm->noa_duration = noa_duration;
3720 mvm->noa_vif = vif;
3721
3722 return iwl_mvm_update_quotas(mvm, false, NULL);
3723 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3724 /* must be associated client vif - ignore authorized */
3725 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3726 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3727 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3728 return -EINVAL;
3729
3730 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3731 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3732 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3733 }
3734
3735 return -EOPNOTSUPP;
3736 }
3737
3738 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3739 struct ieee80211_vif *vif,
3740 void *data, int len)
3741 {
3742 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3743 int err;
3744
3745 mutex_lock(&mvm->mutex);
3746 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3747 mutex_unlock(&mvm->mutex);
3748
3749 return err;
3750 }
3751 #endif
3752
3753 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3754 struct ieee80211_vif *vif,
3755 struct ieee80211_channel_switch *chsw)
3756 {
3757 /* By implementing this operation, we prevent mac80211 from
3758 * starting its own channel switch timer, so that we can call
3759 * ieee80211_chswitch_done() ourselves at the right time
3760 * (which is when the absence time event starts).
3761 */
3762
3763 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3764 "dummy channel switch op\n");
3765 }
3766
3767 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3768 struct ieee80211_vif *vif,
3769 struct ieee80211_channel_switch *chsw)
3770 {
3771 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3772 struct ieee80211_vif *csa_vif;
3773 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3774 u32 apply_time;
3775 int ret;
3776
3777 mutex_lock(&mvm->mutex);
3778
3779 mvmvif->csa_failed = false;
3780
3781 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3782 chsw->chandef.center_freq1);
3783
3784 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3785
3786 switch (vif->type) {
3787 case NL80211_IFTYPE_AP:
3788 csa_vif =
3789 rcu_dereference_protected(mvm->csa_vif,
3790 lockdep_is_held(&mvm->mutex));
3791 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3792 "Another CSA is already in progress")) {
3793 ret = -EBUSY;
3794 goto out_unlock;
3795 }
3796
3797 rcu_assign_pointer(mvm->csa_vif, vif);
3798
3799 if (WARN_ONCE(mvmvif->csa_countdown,
3800 "Previous CSA countdown didn't complete")) {
3801 ret = -EBUSY;
3802 goto out_unlock;
3803 }
3804
3805 break;
3806 case NL80211_IFTYPE_STATION:
3807 /* Schedule the time event to a bit before beacon 1,
3808 * to make sure we're in the new channel when the
3809 * GO/AP arrives.
3810 */
3811 apply_time = chsw->device_timestamp +
3812 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3813 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3814
3815 if (chsw->block_tx)
3816 iwl_mvm_csa_client_absent(mvm, vif);
3817
3818 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3819 apply_time);
3820 if (mvmvif->bf_data.bf_enabled) {
3821 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3822 if (ret)
3823 goto out_unlock;
3824 }
3825
3826 break;
3827 default:
3828 break;
3829 }
3830
3831 mvmvif->ps_disabled = true;
3832
3833 ret = iwl_mvm_power_update_ps(mvm);
3834 if (ret)
3835 goto out_unlock;
3836
3837 /* we won't be on this channel any longer */
3838 iwl_mvm_teardown_tdls_peers(mvm);
3839
3840 out_unlock:
3841 mutex_unlock(&mvm->mutex);
3842
3843 return ret;
3844 }
3845
3846 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3847 struct ieee80211_vif *vif)
3848 {
3849 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3850 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3851 int ret;
3852
3853 mutex_lock(&mvm->mutex);
3854
3855 if (mvmvif->csa_failed) {
3856 mvmvif->csa_failed = false;
3857 ret = -EIO;
3858 goto out_unlock;
3859 }
3860
3861 if (vif->type == NL80211_IFTYPE_STATION) {
3862 struct iwl_mvm_sta *mvmsta;
3863
3864 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3865 mvmvif->ap_sta_id);
3866
3867 if (WARN_ON(!mvmsta)) {
3868 ret = -EIO;
3869 goto out_unlock;
3870 }
3871
3872 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3873
3874 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3875
3876 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3877 if (ret)
3878 goto out_unlock;
3879
3880 iwl_mvm_stop_session_protection(mvm, vif);
3881 }
3882
3883 mvmvif->ps_disabled = false;
3884
3885 ret = iwl_mvm_power_update_ps(mvm);
3886
3887 out_unlock:
3888 mutex_unlock(&mvm->mutex);
3889
3890 return ret;
3891 }
3892
3893 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3894 struct ieee80211_vif *vif, u32 queues, bool drop)
3895 {
3896 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3897 struct iwl_mvm_vif *mvmvif;
3898 struct iwl_mvm_sta *mvmsta;
3899 struct ieee80211_sta *sta;
3900 int i;
3901 u32 msk = 0;
3902
3903 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3904 return;
3905
3906 mutex_lock(&mvm->mutex);
3907 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3908
3909 /* flush the AP-station and all TDLS peers */
3910 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3911 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3912 lockdep_is_held(&mvm->mutex));
3913 if (IS_ERR_OR_NULL(sta))
3914 continue;
3915
3916 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3917 if (mvmsta->vif != vif)
3918 continue;
3919
3920 /* make sure only TDLS peers or the AP are flushed */
3921 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3922
3923 msk |= mvmsta->tfd_queue_msk;
3924 }
3925
3926 if (drop) {
3927 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3928 IWL_ERR(mvm, "flush request fail\n");
3929 mutex_unlock(&mvm->mutex);
3930 } else {
3931 mutex_unlock(&mvm->mutex);
3932
3933 /* this can take a while, and we may need/want other operations
3934 * to succeed while doing this, so do it without the mutex held
3935 */
3936 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3937 }
3938 }
3939
3940 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3941 struct survey_info *survey)
3942 {
3943 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3944 int ret;
3945
3946 memset(survey, 0, sizeof(*survey));
3947
3948 /* only support global statistics right now */
3949 if (idx != 0)
3950 return -ENOENT;
3951
3952 if (fw_has_capa(&mvm->fw->ucode_capa,
3953 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3954 return -ENOENT;
3955
3956 mutex_lock(&mvm->mutex);
3957
3958 if (mvm->ucode_loaded) {
3959 ret = iwl_mvm_request_statistics(mvm, false);
3960 if (ret)
3961 goto out;
3962 }
3963
3964 survey->filled = SURVEY_INFO_TIME |
3965 SURVEY_INFO_TIME_RX |
3966 SURVEY_INFO_TIME_TX |
3967 SURVEY_INFO_TIME_SCAN;
3968 survey->time = mvm->accu_radio_stats.on_time_rf +
3969 mvm->radio_stats.on_time_rf;
3970 do_div(survey->time, USEC_PER_MSEC);
3971
3972 survey->time_rx = mvm->accu_radio_stats.rx_time +
3973 mvm->radio_stats.rx_time;
3974 do_div(survey->time_rx, USEC_PER_MSEC);
3975
3976 survey->time_tx = mvm->accu_radio_stats.tx_time +
3977 mvm->radio_stats.tx_time;
3978 do_div(survey->time_tx, USEC_PER_MSEC);
3979
3980 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3981 mvm->radio_stats.on_time_scan;
3982 do_div(survey->time_scan, USEC_PER_MSEC);
3983
3984 ret = 0;
3985 out:
3986 mutex_unlock(&mvm->mutex);
3987 return ret;
3988 }
3989
3990 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3991 struct ieee80211_vif *vif,
3992 struct ieee80211_sta *sta,
3993 struct station_info *sinfo)
3994 {
3995 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3996 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3997 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3998
3999 if (fw_has_capa(&mvm->fw->ucode_capa,
4000 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4001 return;
4002
4003 /* if beacon filtering isn't on mac80211 does it anyway */
4004 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4005 return;
4006
4007 if (!vif->bss_conf.assoc)
4008 return;
4009
4010 mutex_lock(&mvm->mutex);
4011
4012 if (mvmvif->ap_sta_id != mvmsta->sta_id)
4013 goto unlock;
4014
4015 if (iwl_mvm_request_statistics(mvm, false))
4016 goto unlock;
4017
4018 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4019 mvmvif->beacon_stats.accu_num_beacons;
4020 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
4021 if (mvmvif->beacon_stats.avg_signal) {
4022 /* firmware only reports a value after RXing a few beacons */
4023 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4024 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4025 }
4026 unlock:
4027 mutex_unlock(&mvm->mutex);
4028 }
4029
4030 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4031 struct ieee80211_vif *vif,
4032 const struct ieee80211_event *event)
4033 {
4034 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
4035 do { \
4036 if ((_cnt) && --(_cnt)) \
4037 break; \
4038 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
4039 } while (0)
4040
4041 struct iwl_fw_dbg_trigger_tlv *trig;
4042 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4043
4044 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4045 return;
4046
4047 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4048 trig_mlme = (void *)trig->data;
4049 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4050 return;
4051
4052 if (event->u.mlme.data == ASSOC_EVENT) {
4053 if (event->u.mlme.status == MLME_DENIED)
4054 CHECK_MLME_TRIGGER(mvm, trig, buf,
4055 trig_mlme->stop_assoc_denied,
4056 "DENIED ASSOC: reason %d",
4057 event->u.mlme.reason);
4058 else if (event->u.mlme.status == MLME_TIMEOUT)
4059 CHECK_MLME_TRIGGER(mvm, trig, buf,
4060 trig_mlme->stop_assoc_timeout,
4061 "ASSOC TIMEOUT");
4062 } else if (event->u.mlme.data == AUTH_EVENT) {
4063 if (event->u.mlme.status == MLME_DENIED)
4064 CHECK_MLME_TRIGGER(mvm, trig, buf,
4065 trig_mlme->stop_auth_denied,
4066 "DENIED AUTH: reason %d",
4067 event->u.mlme.reason);
4068 else if (event->u.mlme.status == MLME_TIMEOUT)
4069 CHECK_MLME_TRIGGER(mvm, trig, buf,
4070 trig_mlme->stop_auth_timeout,
4071 "AUTH TIMEOUT");
4072 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4073 CHECK_MLME_TRIGGER(mvm, trig, buf,
4074 trig_mlme->stop_rx_deauth,
4075 "DEAUTH RX %d", event->u.mlme.reason);
4076 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4077 CHECK_MLME_TRIGGER(mvm, trig, buf,
4078 trig_mlme->stop_tx_deauth,
4079 "DEAUTH TX %d", event->u.mlme.reason);
4080 }
4081 #undef CHECK_MLME_TRIGGER
4082 }
4083
4084 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4085 struct ieee80211_vif *vif,
4086 const struct ieee80211_event *event)
4087 {
4088 struct iwl_fw_dbg_trigger_tlv *trig;
4089 struct iwl_fw_dbg_trigger_ba *ba_trig;
4090
4091 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4092 return;
4093
4094 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4095 ba_trig = (void *)trig->data;
4096 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4097 return;
4098
4099 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4100 return;
4101
4102 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4103 "BAR received from %pM, tid %d, ssn %d",
4104 event->u.ba.sta->addr, event->u.ba.tid,
4105 event->u.ba.ssn);
4106 }
4107
4108 static void
4109 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4110 struct ieee80211_vif *vif,
4111 const struct ieee80211_event *event)
4112 {
4113 struct iwl_fw_dbg_trigger_tlv *trig;
4114 struct iwl_fw_dbg_trigger_ba *ba_trig;
4115
4116 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4117 return;
4118
4119 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4120 ba_trig = (void *)trig->data;
4121 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4122 return;
4123
4124 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4125 return;
4126
4127 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4128 "Frame from %pM timed out, tid %d",
4129 event->u.ba.sta->addr, event->u.ba.tid);
4130 }
4131
4132 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4133 struct ieee80211_vif *vif,
4134 const struct ieee80211_event *event)
4135 {
4136 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4137
4138 switch (event->type) {
4139 case MLME_EVENT:
4140 iwl_mvm_event_mlme_callback(mvm, vif, event);
4141 break;
4142 case BAR_RX_EVENT:
4143 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4144 break;
4145 case BA_FRAME_TIMEOUT:
4146 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4147 break;
4148 default:
4149 break;
4150 }
4151 }
4152
4153 const struct ieee80211_ops iwl_mvm_hw_ops = {
4154 .tx = iwl_mvm_mac_tx,
4155 .ampdu_action = iwl_mvm_mac_ampdu_action,
4156 .start = iwl_mvm_mac_start,
4157 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4158 .stop = iwl_mvm_mac_stop,
4159 .add_interface = iwl_mvm_mac_add_interface,
4160 .remove_interface = iwl_mvm_mac_remove_interface,
4161 .config = iwl_mvm_mac_config,
4162 .prepare_multicast = iwl_mvm_prepare_multicast,
4163 .configure_filter = iwl_mvm_configure_filter,
4164 .bss_info_changed = iwl_mvm_bss_info_changed,
4165 .hw_scan = iwl_mvm_mac_hw_scan,
4166 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4167 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4168 .sta_state = iwl_mvm_mac_sta_state,
4169 .sta_notify = iwl_mvm_mac_sta_notify,
4170 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4171 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4172 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4173 .sta_rc_update = iwl_mvm_sta_rc_update,
4174 .conf_tx = iwl_mvm_mac_conf_tx,
4175 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4176 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4177 .flush = iwl_mvm_mac_flush,
4178 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4179 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4180 .set_key = iwl_mvm_mac_set_key,
4181 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4182 .remain_on_channel = iwl_mvm_roc,
4183 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4184 .add_chanctx = iwl_mvm_add_chanctx,
4185 .remove_chanctx = iwl_mvm_remove_chanctx,
4186 .change_chanctx = iwl_mvm_change_chanctx,
4187 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4188 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4189 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4190
4191 .start_ap = iwl_mvm_start_ap_ibss,
4192 .stop_ap = iwl_mvm_stop_ap_ibss,
4193 .join_ibss = iwl_mvm_start_ap_ibss,
4194 .leave_ibss = iwl_mvm_stop_ap_ibss,
4195
4196 .set_tim = iwl_mvm_set_tim,
4197
4198 .channel_switch = iwl_mvm_channel_switch,
4199 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4200 .post_channel_switch = iwl_mvm_post_channel_switch,
4201
4202 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4203 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4204 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4205
4206 .event_callback = iwl_mvm_mac_event_callback,
4207
4208 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4209
4210 #ifdef CONFIG_PM_SLEEP
4211 /* look at d3.c */
4212 .suspend = iwl_mvm_suspend,
4213 .resume = iwl_mvm_resume,
4214 .set_wakeup = iwl_mvm_set_wakeup,
4215 .set_rekey_data = iwl_mvm_set_rekey_data,
4216 #if IS_ENABLED(CONFIG_IPV6)
4217 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4218 #endif
4219 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4220 #endif
4221 .get_survey = iwl_mvm_mac_get_survey,
4222 .sta_statistics = iwl_mvm_mac_sta_statistics,
4223 };
Linux kernel - Deliverables
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