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
iwl_mvm_ref(struct iwl_mvm * mvm,enum iwl_mvm_ref_type ref_type)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
iwl_mvm_unref(struct iwl_mvm * mvm,enum iwl_mvm_ref_type ref_type)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
iwl_mvm_unref_all_except(struct iwl_mvm * mvm,enum iwl_mvm_ref_type except_ref)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
iwl_mvm_ref_taken(struct iwl_mvm * mvm)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
iwl_mvm_ref_sync(struct iwl_mvm * mvm,enum iwl_mvm_ref_type ref_type)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
iwl_mvm_reset_phy_ctxts(struct iwl_mvm * mvm)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
iwl_mvm_get_regdomain(struct wiphy * wiphy,const char * alpha2,enum iwl_mcc_source src_id,bool * changed)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 u32 status = le32_to_cpu(resp->status);
327
328 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE ||
329 status == MCC_RESP_ILLEGAL);
330 }
331
332 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
333 __le32_to_cpu(resp->n_channels),
334 resp->channels,
335 __le16_to_cpu(resp->mcc));
336 /* Store the return source id */
337 src_id = resp->source_id;
338 kfree(resp);
339 if (IS_ERR_OR_NULL(regd)) {
340 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
341 PTR_ERR_OR_ZERO(regd));
342 goto out;
343 }
344
345 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
346 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
347 mvm->lar_regdom_set = true;
348 mvm->mcc_src = src_id;
349
350 out:
351 return regd;
352 }
353
iwl_mvm_update_changed_regdom(struct iwl_mvm * mvm)354 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
355 {
356 bool changed;
357 struct ieee80211_regdomain *regd;
358
359 if (!iwl_mvm_is_lar_supported(mvm))
360 return;
361
362 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
363 if (!IS_ERR_OR_NULL(regd)) {
364 /* only update the regulatory core if changed */
365 if (changed)
366 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
367
368 kfree(regd);
369 }
370 }
371
iwl_mvm_get_current_regdomain(struct iwl_mvm * mvm,bool * changed)372 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
373 bool *changed)
374 {
375 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
376 iwl_mvm_is_wifi_mcc_supported(mvm) ?
377 MCC_SOURCE_GET_CURRENT :
378 MCC_SOURCE_OLD_FW, changed);
379 }
380
iwl_mvm_init_fw_regd(struct iwl_mvm * mvm)381 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
382 {
383 enum iwl_mcc_source used_src;
384 struct ieee80211_regdomain *regd;
385 int ret;
386 bool changed;
387 const struct ieee80211_regdomain *r =
388 rtnl_dereference(mvm->hw->wiphy->regd);
389
390 if (!r)
391 return -ENOENT;
392
393 /* save the last source in case we overwrite it below */
394 used_src = mvm->mcc_src;
395 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
396 /* Notify the firmware we support wifi location updates */
397 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
398 if (!IS_ERR_OR_NULL(regd))
399 kfree(regd);
400 }
401
402 /* Now set our last stored MCC and source */
403 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
404 &changed);
405 if (IS_ERR_OR_NULL(regd))
406 return -EIO;
407
408 /* update cfg80211 if the regdomain was changed */
409 if (changed)
410 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
411 else
412 ret = 0;
413
414 kfree(regd);
415 return ret;
416 }
417
iwl_mvm_mac_setup_register(struct iwl_mvm * mvm)418 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
419 {
420 struct ieee80211_hw *hw = mvm->hw;
421 int num_mac, ret, i;
422 static const u32 mvm_ciphers[] = {
423 WLAN_CIPHER_SUITE_WEP40,
424 WLAN_CIPHER_SUITE_WEP104,
425 WLAN_CIPHER_SUITE_TKIP,
426 WLAN_CIPHER_SUITE_CCMP,
427 };
428
429 /* Tell mac80211 our characteristics */
430 ieee80211_hw_set(hw, SIGNAL_DBM);
431 ieee80211_hw_set(hw, SPECTRUM_MGMT);
432 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
433 ieee80211_hw_set(hw, QUEUE_CONTROL);
434 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
435 ieee80211_hw_set(hw, SUPPORTS_PS);
436 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
437 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
438 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
439 ieee80211_hw_set(hw, CONNECTION_MONITOR);
440 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
441 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
442 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
443
444 hw->queues = mvm->first_agg_queue;
445 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
446 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
447 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
448 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
449 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
450 hw->rate_control_algorithm = "iwl-mvm-rs";
451 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
452 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
453
454 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2);
455 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
456 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
457 hw->wiphy->cipher_suites = mvm->ciphers;
458
459 /*
460 * Enable 11w if advertised by firmware and software crypto
461 * is not enabled (as the firmware will interpret some mgmt
462 * packets, so enabling it with software crypto isn't safe)
463 */
464 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
465 !iwlwifi_mod_params.sw_crypto) {
466 ieee80211_hw_set(hw, MFP_CAPABLE);
467 mvm->ciphers[hw->wiphy->n_cipher_suites] =
468 WLAN_CIPHER_SUITE_AES_CMAC;
469 hw->wiphy->n_cipher_suites++;
470 }
471
472 /* currently FW API supports only one optional cipher scheme */
473 if (mvm->fw->cs[0].cipher) {
474 mvm->hw->n_cipher_schemes = 1;
475 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
476 mvm->ciphers[hw->wiphy->n_cipher_suites] =
477 mvm->fw->cs[0].cipher;
478 hw->wiphy->n_cipher_suites++;
479 }
480
481 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
482 hw->wiphy->features |=
483 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
484 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
485 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
486
487 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
488 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
489 hw->chanctx_data_size = sizeof(u16);
490
491 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
492 BIT(NL80211_IFTYPE_P2P_CLIENT) |
493 BIT(NL80211_IFTYPE_AP) |
494 BIT(NL80211_IFTYPE_P2P_GO) |
495 BIT(NL80211_IFTYPE_P2P_DEVICE) |
496 BIT(NL80211_IFTYPE_ADHOC);
497
498 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
499 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
500 if (iwl_mvm_is_lar_supported(mvm))
501 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
502 else
503 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
504 REGULATORY_DISABLE_BEACON_HINTS;
505
506 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
507 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
508
509 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
510
511 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
512 hw->wiphy->n_iface_combinations =
513 ARRAY_SIZE(iwl_mvm_iface_combinations);
514
515 hw->wiphy->max_remain_on_channel_duration = 10000;
516 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
517 /* we can compensate an offset of up to 3 channels = 15 MHz */
518 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
519
520 /* Extract MAC address */
521 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
522 hw->wiphy->addresses = mvm->addresses;
523 hw->wiphy->n_addresses = 1;
524
525 /* Extract additional MAC addresses if available */
526 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
527 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
528
529 for (i = 1; i < num_mac; i++) {
530 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
531 ETH_ALEN);
532 mvm->addresses[i].addr[5]++;
533 hw->wiphy->n_addresses++;
534 }
535
536 iwl_mvm_reset_phy_ctxts(mvm);
537
538 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
539
540 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
541
542 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
543 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
544 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
545
546 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
547 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
548 else
549 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
550
551 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
552 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
553 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
554 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
555 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
556 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
557
558 if (fw_has_capa(&mvm->fw->ucode_capa,
559 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
560 fw_has_api(&mvm->fw->ucode_capa,
561 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
562 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
563 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
564 }
565
566 hw->wiphy->hw_version = mvm->trans->hw_id;
567
568 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
569 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
570 else
571 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
572
573 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
574 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
575 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
576 /* we create the 802.11 header and zero length SSID IE. */
577 hw->wiphy->max_sched_scan_ie_len =
578 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
579 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
580 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
581
582 /*
583 * the firmware uses u8 for num of iterations, but 0xff is saved for
584 * infinite loop, so the maximum number of iterations is actually 254.
585 */
586 hw->wiphy->max_sched_scan_plan_iterations = 254;
587
588 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
589 NL80211_FEATURE_LOW_PRIORITY_SCAN |
590 NL80211_FEATURE_P2P_GO_OPPPS |
591 NL80211_FEATURE_DYNAMIC_SMPS |
592 NL80211_FEATURE_STATIC_SMPS |
593 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
594
595 if (fw_has_capa(&mvm->fw->ucode_capa,
596 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
597 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
598 if (fw_has_capa(&mvm->fw->ucode_capa,
599 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
600 hw->wiphy->features |= NL80211_FEATURE_QUIET;
601
602 if (fw_has_capa(&mvm->fw->ucode_capa,
603 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
604 hw->wiphy->features |=
605 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
606
607 if (fw_has_capa(&mvm->fw->ucode_capa,
608 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
609 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
610
611 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
612
613 #ifdef CONFIG_PM_SLEEP
614 if (iwl_mvm_is_d0i3_supported(mvm) &&
615 device_can_wakeup(mvm->trans->dev)) {
616 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
617 hw->wiphy->wowlan = &mvm->wowlan;
618 }
619
620 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
621 mvm->trans->ops->d3_suspend &&
622 mvm->trans->ops->d3_resume &&
623 device_can_wakeup(mvm->trans->dev)) {
624 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
625 WIPHY_WOWLAN_DISCONNECT |
626 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
627 WIPHY_WOWLAN_RFKILL_RELEASE |
628 WIPHY_WOWLAN_NET_DETECT;
629 if (!iwlwifi_mod_params.sw_crypto)
630 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
631 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
632 WIPHY_WOWLAN_4WAY_HANDSHAKE;
633
634 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
635 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
636 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
637 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
638 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
639 hw->wiphy->wowlan = &mvm->wowlan;
640 }
641 #endif
642
643 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
644 /* assign default bcast filtering configuration */
645 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
646 #endif
647
648 ret = iwl_mvm_leds_init(mvm);
649 if (ret)
650 return ret;
651
652 if (fw_has_capa(&mvm->fw->ucode_capa,
653 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
654 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
655 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
656 ieee80211_hw_set(hw, TDLS_WIDER_BW);
657 }
658
659 if (fw_has_capa(&mvm->fw->ucode_capa,
660 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
661 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
662 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
663 }
664
665 hw->netdev_features |= mvm->cfg->features;
666 if (!iwl_mvm_is_csum_supported(mvm))
667 hw->netdev_features &= ~NETIF_F_RXCSUM;
668
669 ret = ieee80211_register_hw(mvm->hw);
670 if (ret)
671 iwl_mvm_leds_exit(mvm);
672
673 return ret;
674 }
675
iwl_mvm_defer_tx(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct sk_buff * skb)676 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
677 struct ieee80211_sta *sta,
678 struct sk_buff *skb)
679 {
680 struct iwl_mvm_sta *mvmsta;
681 bool defer = false;
682
683 /*
684 * double check the IN_D0I3 flag both before and after
685 * taking the spinlock, in order to prevent taking
686 * the spinlock when not needed.
687 */
688 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
689 return false;
690
691 spin_lock(&mvm->d0i3_tx_lock);
692 /*
693 * testing the flag again ensures the skb dequeue
694 * loop (on d0i3 exit) hasn't run yet.
695 */
696 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
697 goto out;
698
699 mvmsta = iwl_mvm_sta_from_mac80211(sta);
700 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
701 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
702 goto out;
703
704 __skb_queue_tail(&mvm->d0i3_tx, skb);
705 ieee80211_stop_queues(mvm->hw);
706
707 /* trigger wakeup */
708 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
709 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
710
711 defer = true;
712 out:
713 spin_unlock(&mvm->d0i3_tx_lock);
714 return defer;
715 }
716
iwl_mvm_mac_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)717 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
718 struct ieee80211_tx_control *control,
719 struct sk_buff *skb)
720 {
721 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
722 struct ieee80211_sta *sta = control->sta;
723 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
724 struct ieee80211_hdr *hdr = (void *)skb->data;
725
726 if (iwl_mvm_is_radio_killed(mvm)) {
727 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
728 goto drop;
729 }
730
731 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
732 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
733 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
734 goto drop;
735
736 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
737 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
738 ieee80211_is_mgmt(hdr->frame_control) &&
739 !ieee80211_is_deauth(hdr->frame_control) &&
740 !ieee80211_is_disassoc(hdr->frame_control) &&
741 !ieee80211_is_action(hdr->frame_control)))
742 sta = NULL;
743
744 /* If there is no sta, and it's not offchannel - send through AP */
745 if (info->control.vif->type == NL80211_IFTYPE_STATION &&
746 info->hw_queue != IWL_MVM_OFFCHANNEL_QUEUE && !sta) {
747 struct iwl_mvm_vif *mvmvif =
748 iwl_mvm_vif_from_mac80211(info->control.vif);
749 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id);
750
751 if (ap_sta_id < IWL_MVM_STATION_COUNT) {
752 /* mac80211 holds rcu read lock */
753 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]);
754 if (IS_ERR_OR_NULL(sta))
755 goto drop;
756 }
757 }
758
759 if (sta) {
760 if (iwl_mvm_defer_tx(mvm, sta, skb))
761 return;
762 if (iwl_mvm_tx_skb(mvm, skb, sta))
763 goto drop;
764 return;
765 }
766
767 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
768 goto drop;
769 return;
770 drop:
771 ieee80211_free_txskb(hw, skb);
772 }
773
iwl_enable_rx_ampdu(const struct iwl_cfg * cfg)774 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
775 {
776 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
777 return false;
778 return true;
779 }
780
iwl_enable_tx_ampdu(const struct iwl_cfg * cfg)781 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
782 {
783 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
784 return false;
785 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
786 return true;
787
788 /* enabled by default */
789 return true;
790 }
791
792 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
793 do { \
794 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
795 break; \
796 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
797 } while (0)
798
799 static void
iwl_mvm_ampdu_check_trigger(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u16 tid,u16 rx_ba_ssn,enum ieee80211_ampdu_mlme_action action)800 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
801 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
802 enum ieee80211_ampdu_mlme_action action)
803 {
804 struct iwl_fw_dbg_trigger_tlv *trig;
805 struct iwl_fw_dbg_trigger_ba *ba_trig;
806
807 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
808 return;
809
810 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
811 ba_trig = (void *)trig->data;
812
813 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
814 return;
815
816 switch (action) {
817 case IEEE80211_AMPDU_TX_OPERATIONAL: {
818 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
819 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
820
821 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
822 "TX AGG START: MAC %pM tid %d ssn %d\n",
823 sta->addr, tid, tid_data->ssn);
824 break;
825 }
826 case IEEE80211_AMPDU_TX_STOP_CONT:
827 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
828 "TX AGG STOP: MAC %pM tid %d\n",
829 sta->addr, tid);
830 break;
831 case IEEE80211_AMPDU_RX_START:
832 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
833 "RX AGG START: MAC %pM tid %d ssn %d\n",
834 sta->addr, tid, rx_ba_ssn);
835 break;
836 case IEEE80211_AMPDU_RX_STOP:
837 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
838 "RX AGG STOP: MAC %pM tid %d\n",
839 sta->addr, tid);
840 break;
841 default:
842 break;
843 }
844 }
845
iwl_mvm_mac_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)846 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
847 struct ieee80211_vif *vif,
848 struct ieee80211_ampdu_params *params)
849 {
850 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
851 int ret;
852 bool tx_agg_ref = false;
853 struct ieee80211_sta *sta = params->sta;
854 enum ieee80211_ampdu_mlme_action action = params->action;
855 u16 tid = params->tid;
856 u16 *ssn = ¶ms->ssn;
857 u8 buf_size = params->buf_size;
858
859 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
860 sta->addr, tid, action);
861
862 if (!(mvm->nvm_data->sku_cap_11n_enable))
863 return -EACCES;
864
865 /* return from D0i3 before starting a new Tx aggregation */
866 switch (action) {
867 case IEEE80211_AMPDU_TX_START:
868 case IEEE80211_AMPDU_TX_STOP_CONT:
869 case IEEE80211_AMPDU_TX_STOP_FLUSH:
870 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
871 case IEEE80211_AMPDU_TX_OPERATIONAL:
872 /*
873 * for tx start, wait synchronously until D0i3 exit to
874 * get the correct sequence number for the tid.
875 * additionally, some other ampdu actions use direct
876 * target access, which is not handled automatically
877 * by the trans layer (unlike commands), so wait for
878 * d0i3 exit in these cases as well.
879 */
880 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
881 if (ret)
882 return ret;
883
884 tx_agg_ref = true;
885 break;
886 default:
887 break;
888 }
889
890 mutex_lock(&mvm->mutex);
891
892 switch (action) {
893 case IEEE80211_AMPDU_RX_START:
894 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
895 ret = -EINVAL;
896 break;
897 }
898 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
899 break;
900 case IEEE80211_AMPDU_RX_STOP:
901 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
902 break;
903 case IEEE80211_AMPDU_TX_START:
904 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
905 ret = -EINVAL;
906 break;
907 }
908 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
909 break;
910 case IEEE80211_AMPDU_TX_STOP_CONT:
911 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
912 break;
913 case IEEE80211_AMPDU_TX_STOP_FLUSH:
914 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
915 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
916 break;
917 case IEEE80211_AMPDU_TX_OPERATIONAL:
918 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
919 break;
920 default:
921 WARN_ON_ONCE(1);
922 ret = -EINVAL;
923 break;
924 }
925
926 if (!ret) {
927 u16 rx_ba_ssn = 0;
928
929 if (action == IEEE80211_AMPDU_RX_START)
930 rx_ba_ssn = *ssn;
931
932 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
933 rx_ba_ssn, action);
934 }
935 mutex_unlock(&mvm->mutex);
936
937 /*
938 * If the tid is marked as started, we won't use it for offloaded
939 * traffic on the next D0i3 entry. It's safe to unref.
940 */
941 if (tx_agg_ref)
942 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
943
944 return ret;
945 }
946
iwl_mvm_cleanup_iterator(void * data,u8 * mac,struct ieee80211_vif * vif)947 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
948 struct ieee80211_vif *vif)
949 {
950 struct iwl_mvm *mvm = data;
951 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
952
953 mvmvif->uploaded = false;
954 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
955
956 spin_lock_bh(&mvm->time_event_lock);
957 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
958 spin_unlock_bh(&mvm->time_event_lock);
959
960 mvmvif->phy_ctxt = NULL;
961 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
962 }
963
iwl_mvm_read_coredump(char * buffer,loff_t offset,size_t count,const void * data,size_t datalen)964 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
965 const void *data, size_t datalen)
966 {
967 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
968 ssize_t bytes_read;
969 ssize_t bytes_read_trans;
970
971 if (offset < dump_ptrs->op_mode_len) {
972 bytes_read = min_t(ssize_t, count,
973 dump_ptrs->op_mode_len - offset);
974 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
975 bytes_read);
976 offset += bytes_read;
977 count -= bytes_read;
978
979 if (count == 0)
980 return bytes_read;
981 } else {
982 bytes_read = 0;
983 }
984
985 if (!dump_ptrs->trans_ptr)
986 return bytes_read;
987
988 offset -= dump_ptrs->op_mode_len;
989 bytes_read_trans = min_t(ssize_t, count,
990 dump_ptrs->trans_ptr->len - offset);
991 memcpy(buffer + bytes_read,
992 (u8 *)dump_ptrs->trans_ptr->data + offset,
993 bytes_read_trans);
994
995 return bytes_read + bytes_read_trans;
996 }
997
iwl_mvm_free_coredump(const void * data)998 static void iwl_mvm_free_coredump(const void *data)
999 {
1000 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
1001
1002 vfree(fw_error_dump->op_mode_ptr);
1003 vfree(fw_error_dump->trans_ptr);
1004 kfree(fw_error_dump);
1005 }
1006
iwl_mvm_dump_fifos(struct iwl_mvm * mvm,struct iwl_fw_error_dump_data ** dump_data)1007 static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
1008 struct iwl_fw_error_dump_data **dump_data)
1009 {
1010 struct iwl_fw_error_dump_fifo *fifo_hdr;
1011 u32 *fifo_data;
1012 u32 fifo_len;
1013 unsigned long flags;
1014 int i, j;
1015
1016 if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
1017 return;
1018
1019 /* Pull RXF data from all RXFs */
1020 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
1021 /*
1022 * Keep aside the additional offset that might be needed for
1023 * next RXF
1024 */
1025 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
1026
1027 fifo_hdr = (void *)(*dump_data)->data;
1028 fifo_data = (void *)fifo_hdr->data;
1029 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
1030
1031 /* No need to try to read the data if the length is 0 */
1032 if (fifo_len == 0)
1033 continue;
1034
1035 /* Add a TLV for the RXF */
1036 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
1037 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
1038
1039 fifo_hdr->fifo_num = cpu_to_le32(i);
1040 fifo_hdr->available_bytes =
1041 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1042 RXF_RD_D_SPACE +
1043 offset_diff));
1044 fifo_hdr->wr_ptr =
1045 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1046 RXF_RD_WR_PTR +
1047 offset_diff));
1048 fifo_hdr->rd_ptr =
1049 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1050 RXF_RD_RD_PTR +
1051 offset_diff));
1052 fifo_hdr->fence_ptr =
1053 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1054 RXF_RD_FENCE_PTR +
1055 offset_diff));
1056 fifo_hdr->fence_mode =
1057 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1058 RXF_SET_FENCE_MODE +
1059 offset_diff));
1060
1061 /* Lock fence */
1062 iwl_trans_write_prph(mvm->trans,
1063 RXF_SET_FENCE_MODE + offset_diff, 0x1);
1064 /* Set fence pointer to the same place like WR pointer */
1065 iwl_trans_write_prph(mvm->trans,
1066 RXF_LD_WR2FENCE + offset_diff, 0x1);
1067 /* Set fence offset */
1068 iwl_trans_write_prph(mvm->trans,
1069 RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
1070 0x0);
1071
1072 /* Read FIFO */
1073 fifo_len /= sizeof(u32); /* Size in DWORDS */
1074 for (j = 0; j < fifo_len; j++)
1075 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
1076 RXF_FIFO_RD_FENCE_INC +
1077 offset_diff);
1078 *dump_data = iwl_fw_error_next_data(*dump_data);
1079 }
1080
1081 /* Pull TXF data from all TXFs */
1082 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
1083 /* Mark the number of TXF we're pulling now */
1084 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
1085
1086 fifo_hdr = (void *)(*dump_data)->data;
1087 fifo_data = (void *)fifo_hdr->data;
1088 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
1089
1090 /* No need to try to read the data if the length is 0 */
1091 if (fifo_len == 0)
1092 continue;
1093
1094 /* Add a TLV for the FIFO */
1095 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
1096 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
1097
1098 fifo_hdr->fifo_num = cpu_to_le32(i);
1099 fifo_hdr->available_bytes =
1100 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1101 TXF_FIFO_ITEM_CNT));
1102 fifo_hdr->wr_ptr =
1103 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1104 TXF_WR_PTR));
1105 fifo_hdr->rd_ptr =
1106 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1107 TXF_RD_PTR));
1108 fifo_hdr->fence_ptr =
1109 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1110 TXF_FENCE_PTR));
1111 fifo_hdr->fence_mode =
1112 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1113 TXF_LOCK_FENCE));
1114
1115 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
1116 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
1117 TXF_WR_PTR);
1118
1119 /* Dummy-read to advance the read pointer to the head */
1120 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
1121
1122 /* Read FIFO */
1123 fifo_len /= sizeof(u32); /* Size in DWORDS */
1124 for (j = 0; j < fifo_len; j++)
1125 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
1126 TXF_READ_MODIFY_DATA);
1127 *dump_data = iwl_fw_error_next_data(*dump_data);
1128 }
1129
1130 iwl_trans_release_nic_access(mvm->trans, &flags);
1131 }
1132
iwl_mvm_free_fw_dump_desc(struct iwl_mvm * mvm)1133 void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
1134 {
1135 if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert ||
1136 !mvm->fw_dump_desc)
1137 return;
1138
1139 kfree(mvm->fw_dump_desc);
1140 mvm->fw_dump_desc = NULL;
1141 }
1142
1143 #define IWL8260_ICCM_OFFSET 0x44000 /* Only for B-step */
1144 #define IWL8260_ICCM_LEN 0xC000 /* Only for B-step */
1145
iwl_mvm_fw_error_dump(struct iwl_mvm * mvm)1146 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
1147 {
1148 struct iwl_fw_error_dump_file *dump_file;
1149 struct iwl_fw_error_dump_data *dump_data;
1150 struct iwl_fw_error_dump_info *dump_info;
1151 struct iwl_fw_error_dump_mem *dump_mem;
1152 struct iwl_fw_error_dump_trigger_desc *dump_trig;
1153 struct iwl_mvm_dump_ptrs *fw_error_dump;
1154 u32 sram_len, sram_ofs;
1155 u32 file_len, fifo_data_len = 0;
1156 u32 smem_len = mvm->cfg->smem_len;
1157 u32 sram2_len = mvm->cfg->dccm2_len;
1158 bool monitor_dump_only = false;
1159
1160 lockdep_assert_held(&mvm->mutex);
1161
1162 /* there's no point in fw dump if the bus is dead */
1163 if (test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
1164 IWL_ERR(mvm, "Skip fw error dump since bus is dead\n");
1165 return;
1166 }
1167
1168 if (mvm->fw_dump_trig &&
1169 mvm->fw_dump_trig->mode & IWL_FW_DBG_TRIGGER_MONITOR_ONLY)
1170 monitor_dump_only = true;
1171
1172 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
1173 if (!fw_error_dump)
1174 return;
1175
1176 /* SRAM - include stack CCM if driver knows the values for it */
1177 if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
1178 const struct fw_img *img;
1179
1180 img = &mvm->fw->img[mvm->cur_ucode];
1181 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1182 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
1183 } else {
1184 sram_ofs = mvm->cfg->dccm_offset;
1185 sram_len = mvm->cfg->dccm_len;
1186 }
1187
1188 /* reading RXF/TXF sizes */
1189 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
1190 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
1191 int i;
1192
1193 fifo_data_len = 0;
1194
1195 /* Count RXF size */
1196 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
1197 if (!mem_cfg->rxfifo_size[i])
1198 continue;
1199
1200 /* Add header info */
1201 fifo_data_len += mem_cfg->rxfifo_size[i] +
1202 sizeof(*dump_data) +
1203 sizeof(struct iwl_fw_error_dump_fifo);
1204 }
1205
1206 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
1207 if (!mem_cfg->txfifo_size[i])
1208 continue;
1209
1210 /* Add header info */
1211 fifo_data_len += mem_cfg->txfifo_size[i] +
1212 sizeof(*dump_data) +
1213 sizeof(struct iwl_fw_error_dump_fifo);
1214 }
1215 }
1216
1217 file_len = sizeof(*dump_file) +
1218 sizeof(*dump_data) * 2 +
1219 sram_len + sizeof(*dump_mem) +
1220 fifo_data_len +
1221 sizeof(*dump_info);
1222
1223 /* Make room for the SMEM, if it exists */
1224 if (smem_len)
1225 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
1226
1227 /* Make room for the secondary SRAM, if it exists */
1228 if (sram2_len)
1229 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
1230
1231 /* Make room for fw's virtual image pages, if it exists */
1232 if (mvm->fw->img[mvm->cur_ucode].paging_mem_size)
1233 file_len += mvm->num_of_paging_blk *
1234 (sizeof(*dump_data) +
1235 sizeof(struct iwl_fw_error_dump_paging) +
1236 PAGING_BLOCK_SIZE);
1237
1238 /* If we only want a monitor dump, reset the file length */
1239 if (monitor_dump_only) {
1240 file_len = sizeof(*dump_file) + sizeof(*dump_data) +
1241 sizeof(*dump_info);
1242 }
1243
1244 /*
1245 * In 8000 HW family B-step include the ICCM (which resides separately)
1246 */
1247 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1248 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP)
1249 file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
1250 IWL8260_ICCM_LEN;
1251
1252 if (mvm->fw_dump_desc)
1253 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
1254 mvm->fw_dump_desc->len;
1255
1256 dump_file = vzalloc(file_len);
1257 if (!dump_file) {
1258 kfree(fw_error_dump);
1259 iwl_mvm_free_fw_dump_desc(mvm);
1260 return;
1261 }
1262
1263 fw_error_dump->op_mode_ptr = dump_file;
1264
1265 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
1266 dump_data = (void *)dump_file->data;
1267
1268 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
1269 dump_data->len = cpu_to_le32(sizeof(*dump_info));
1270 dump_info = (void *) dump_data->data;
1271 dump_info->device_family =
1272 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
1273 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
1274 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
1275 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
1276 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
1277 sizeof(dump_info->fw_human_readable));
1278 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1279 sizeof(dump_info->dev_human_readable));
1280 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1281 sizeof(dump_info->bus_human_readable));
1282
1283 dump_data = iwl_fw_error_next_data(dump_data);
1284 /* We only dump the FIFOs if the FW is in error state */
1285 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1286 iwl_mvm_dump_fifos(mvm, &dump_data);
1287
1288 if (mvm->fw_dump_desc) {
1289 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
1290 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
1291 mvm->fw_dump_desc->len);
1292 dump_trig = (void *)dump_data->data;
1293 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
1294 sizeof(*dump_trig) + mvm->fw_dump_desc->len);
1295
1296 /* now we can free this copy */
1297 iwl_mvm_free_fw_dump_desc(mvm);
1298 dump_data = iwl_fw_error_next_data(dump_data);
1299 }
1300
1301 /* In case we only want monitor dump, skip to dump trasport data */
1302 if (monitor_dump_only)
1303 goto dump_trans_data;
1304
1305 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1306 dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1307 dump_mem = (void *)dump_data->data;
1308 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1309 dump_mem->offset = cpu_to_le32(sram_ofs);
1310 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
1311 sram_len);
1312
1313 if (smem_len) {
1314 dump_data = iwl_fw_error_next_data(dump_data);
1315 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1316 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1317 dump_mem = (void *)dump_data->data;
1318 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1319 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
1320 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
1321 dump_mem->data, smem_len);
1322 }
1323
1324 if (sram2_len) {
1325 dump_data = iwl_fw_error_next_data(dump_data);
1326 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1327 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1328 dump_mem = (void *)dump_data->data;
1329 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1330 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1331 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1332 dump_mem->data, sram2_len);
1333 }
1334
1335 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1336 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) {
1337 dump_data = iwl_fw_error_next_data(dump_data);
1338 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1339 dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN +
1340 sizeof(*dump_mem));
1341 dump_mem = (void *)dump_data->data;
1342 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1343 dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET);
1344 iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET,
1345 dump_mem->data, IWL8260_ICCM_LEN);
1346 }
1347
1348 /* Dump fw's virtual image */
1349 if (mvm->fw->img[mvm->cur_ucode].paging_mem_size) {
1350 u32 i;
1351
1352 for (i = 1; i < mvm->num_of_paging_blk + 1; i++) {
1353 struct iwl_fw_error_dump_paging *paging;
1354 struct page *pages =
1355 mvm->fw_paging_db[i].fw_paging_block;
1356
1357 dump_data = iwl_fw_error_next_data(dump_data);
1358 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PAGING);
1359 dump_data->len = cpu_to_le32(sizeof(*paging) +
1360 PAGING_BLOCK_SIZE);
1361 paging = (void *)dump_data->data;
1362 paging->index = cpu_to_le32(i);
1363 memcpy(paging->data, page_address(pages),
1364 PAGING_BLOCK_SIZE);
1365 }
1366 }
1367
1368 dump_trans_data:
1369 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans,
1370 mvm->fw_dump_trig);
1371 fw_error_dump->op_mode_len = file_len;
1372 if (fw_error_dump->trans_ptr)
1373 file_len += fw_error_dump->trans_ptr->len;
1374 dump_file->file_len = cpu_to_le32(file_len);
1375
1376 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1377 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
1378
1379 mvm->fw_dump_trig = NULL;
1380 clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
1381 }
1382
1383 struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
1384 .trig_desc = {
1385 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
1386 },
1387 };
1388
iwl_mvm_restart_cleanup(struct iwl_mvm * mvm)1389 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1390 {
1391 /* clear the D3 reconfig, we only need it to avoid dumping a
1392 * firmware coredump on reconfiguration, we shouldn't do that
1393 * on D3->D0 transition
1394 */
1395 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1396 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1397 iwl_mvm_fw_error_dump(mvm);
1398 }
1399
1400 /* cleanup all stale references (scan, roc), but keep the
1401 * ucode_down ref until reconfig is complete
1402 */
1403 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1404
1405 iwl_trans_stop_device(mvm->trans);
1406
1407 mvm->scan_status = 0;
1408 mvm->ps_disabled = false;
1409 mvm->calibrating = false;
1410
1411 /* just in case one was running */
1412 ieee80211_remain_on_channel_expired(mvm->hw);
1413
1414 /*
1415 * cleanup all interfaces, even inactive ones, as some might have
1416 * gone down during the HW restart
1417 */
1418 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1419
1420 mvm->p2p_device_vif = NULL;
1421 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1422
1423 iwl_mvm_reset_phy_ctxts(mvm);
1424 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1425 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1426 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1427 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1428 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1429 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1430 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1431 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1432
1433 ieee80211_wake_queues(mvm->hw);
1434
1435 /* clear any stale d0i3 state */
1436 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1437
1438 mvm->vif_count = 0;
1439 mvm->rx_ba_sessions = 0;
1440 mvm->fw_dbg_conf = FW_DBG_INVALID;
1441
1442 /* keep statistics ticking */
1443 iwl_mvm_accu_radio_stats(mvm);
1444 }
1445
__iwl_mvm_mac_start(struct iwl_mvm * mvm)1446 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1447 {
1448 int ret;
1449
1450 lockdep_assert_held(&mvm->mutex);
1451
1452 /* Clean up some internal and mac80211 state on restart */
1453 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1454 iwl_mvm_restart_cleanup(mvm);
1455
1456 ret = iwl_mvm_up(mvm);
1457
1458 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1459 /* Something went wrong - we need to finish some cleanup
1460 * that normally iwl_mvm_mac_restart_complete() below
1461 * would do.
1462 */
1463 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1464 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1465 }
1466
1467 return ret;
1468 }
1469
iwl_mvm_mac_start(struct ieee80211_hw * hw)1470 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1471 {
1472 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1473 int ret;
1474
1475 /* Some hw restart cleanups must not hold the mutex */
1476 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1477 /*
1478 * Make sure we are out of d0i3. This is needed
1479 * to make sure the reference accounting is correct
1480 * (and there is no stale d0i3_exit_work).
1481 */
1482 wait_event_timeout(mvm->d0i3_exit_waitq,
1483 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1484 &mvm->status),
1485 HZ);
1486 }
1487
1488 mutex_lock(&mvm->mutex);
1489 ret = __iwl_mvm_mac_start(mvm);
1490 mutex_unlock(&mvm->mutex);
1491
1492 return ret;
1493 }
1494
iwl_mvm_restart_complete(struct iwl_mvm * mvm)1495 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1496 {
1497 int ret;
1498
1499 mutex_lock(&mvm->mutex);
1500
1501 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1502 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1503 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1504 if (ret)
1505 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1506 ret);
1507
1508 /* allow transport/FW low power modes */
1509 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1510
1511 /*
1512 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1513 * of packets the FW sent out, so we must reconnect.
1514 */
1515 iwl_mvm_teardown_tdls_peers(mvm);
1516
1517 mutex_unlock(&mvm->mutex);
1518 }
1519
iwl_mvm_resume_complete(struct iwl_mvm * mvm)1520 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1521 {
1522 if (!iwl_mvm_is_d0i3_supported(mvm))
1523 return;
1524
1525 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1526 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1527 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1528 &mvm->status),
1529 HZ))
1530 WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1531 }
1532
1533 static void
iwl_mvm_mac_reconfig_complete(struct ieee80211_hw * hw,enum ieee80211_reconfig_type reconfig_type)1534 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1535 enum ieee80211_reconfig_type reconfig_type)
1536 {
1537 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1538
1539 switch (reconfig_type) {
1540 case IEEE80211_RECONFIG_TYPE_RESTART:
1541 iwl_mvm_restart_complete(mvm);
1542 break;
1543 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1544 iwl_mvm_resume_complete(mvm);
1545 break;
1546 }
1547 }
1548
__iwl_mvm_mac_stop(struct iwl_mvm * mvm)1549 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1550 {
1551 lockdep_assert_held(&mvm->mutex);
1552
1553 /* firmware counters are obviously reset now, but we shouldn't
1554 * partially track so also clear the fw_reset_accu counters.
1555 */
1556 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1557
1558 /*
1559 * Disallow low power states when the FW is down by taking
1560 * the UCODE_DOWN ref. in case of ongoing hw restart the
1561 * ref is already taken, so don't take it again.
1562 */
1563 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1564 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1565
1566 /* async_handlers_wk is now blocked */
1567
1568 /*
1569 * The work item could be running or queued if the
1570 * ROC time event stops just as we get here.
1571 */
1572 flush_work(&mvm->roc_done_wk);
1573
1574 iwl_trans_stop_device(mvm->trans);
1575
1576 iwl_mvm_async_handlers_purge(mvm);
1577 /* async_handlers_list is empty and will stay empty: HW is stopped */
1578
1579 /* the fw is stopped, the aux sta is dead: clean up driver state */
1580 iwl_mvm_del_aux_sta(mvm);
1581
1582 iwl_free_fw_paging(mvm);
1583
1584 /*
1585 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1586 * won't be called in this case).
1587 * But make sure to cleanup interfaces that have gone down before/during
1588 * HW restart was requested.
1589 */
1590 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1591 ieee80211_iterate_interfaces(mvm->hw, 0,
1592 iwl_mvm_cleanup_iterator, mvm);
1593
1594 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1595 * make sure there's nothing left there and warn if any is found.
1596 */
1597 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1598 int i;
1599
1600 for (i = 0; i < mvm->max_scans; i++) {
1601 if (WARN_ONCE(mvm->scan_uid_status[i],
1602 "UMAC scan UID %d status was not cleaned\n",
1603 i))
1604 mvm->scan_uid_status[i] = 0;
1605 }
1606 }
1607
1608 mvm->ucode_loaded = false;
1609 }
1610
iwl_mvm_mac_stop(struct ieee80211_hw * hw)1611 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1612 {
1613 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1614
1615 flush_work(&mvm->d0i3_exit_work);
1616 flush_work(&mvm->async_handlers_wk);
1617 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1618 iwl_mvm_free_fw_dump_desc(mvm);
1619
1620 mutex_lock(&mvm->mutex);
1621 __iwl_mvm_mac_stop(mvm);
1622 mutex_unlock(&mvm->mutex);
1623
1624 /*
1625 * The worker might have been waiting for the mutex, let it run and
1626 * discover that its list is now empty.
1627 */
1628 cancel_work_sync(&mvm->async_handlers_wk);
1629 }
1630
iwl_mvm_get_free_phy_ctxt(struct iwl_mvm * mvm)1631 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1632 {
1633 u16 i;
1634
1635 lockdep_assert_held(&mvm->mutex);
1636
1637 for (i = 0; i < NUM_PHY_CTX; i++)
1638 if (!mvm->phy_ctxts[i].ref)
1639 return &mvm->phy_ctxts[i];
1640
1641 IWL_ERR(mvm, "No available PHY context\n");
1642 return NULL;
1643 }
1644
iwl_mvm_set_tx_power(struct iwl_mvm * mvm,struct ieee80211_vif * vif,s16 tx_power)1645 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1646 s16 tx_power)
1647 {
1648 struct iwl_dev_tx_power_cmd cmd = {
1649 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1650 .v2.mac_context_id =
1651 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1652 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1653 };
1654 int len = sizeof(cmd);
1655
1656 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1657 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1658
1659 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1660 len = sizeof(cmd.v2);
1661
1662 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1663 }
1664
iwl_mvm_mac_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1665 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1666 struct ieee80211_vif *vif)
1667 {
1668 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1669 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1670 int ret;
1671
1672 mvmvif->mvm = mvm;
1673
1674 /*
1675 * make sure D0i3 exit is completed, otherwise a target access
1676 * during tx queue configuration could be done when still in
1677 * D0i3 state.
1678 */
1679 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1680 if (ret)
1681 return ret;
1682
1683 /*
1684 * Not much to do here. The stack will not allow interface
1685 * types or combinations that we didn't advertise, so we
1686 * don't really have to check the types.
1687 */
1688
1689 mutex_lock(&mvm->mutex);
1690
1691 /* make sure that beacon statistics don't go backwards with FW reset */
1692 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1693 mvmvif->beacon_stats.accu_num_beacons +=
1694 mvmvif->beacon_stats.num_beacons;
1695
1696 /* Allocate resources for the MAC context, and add it to the fw */
1697 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1698 if (ret)
1699 goto out_unlock;
1700
1701 /* Counting number of interfaces is needed for legacy PM */
1702 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1703 mvm->vif_count++;
1704
1705 /*
1706 * The AP binding flow can be done only after the beacon
1707 * template is configured (which happens only in the mac80211
1708 * start_ap() flow), and adding the broadcast station can happen
1709 * only after the binding.
1710 * In addition, since modifying the MAC before adding a bcast
1711 * station is not allowed by the FW, delay the adding of MAC context to
1712 * the point where we can also add the bcast station.
1713 * In short: there's not much we can do at this point, other than
1714 * allocating resources :)
1715 */
1716 if (vif->type == NL80211_IFTYPE_AP ||
1717 vif->type == NL80211_IFTYPE_ADHOC) {
1718 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1719 if (ret) {
1720 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1721 goto out_release;
1722 }
1723
1724 iwl_mvm_vif_dbgfs_register(mvm, vif);
1725 goto out_unlock;
1726 }
1727
1728 mvmvif->features |= hw->netdev_features;
1729
1730 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1731 if (ret)
1732 goto out_release;
1733
1734 ret = iwl_mvm_power_update_mac(mvm);
1735 if (ret)
1736 goto out_remove_mac;
1737
1738 /* beacon filtering */
1739 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1740 if (ret)
1741 goto out_remove_mac;
1742
1743 if (!mvm->bf_allowed_vif &&
1744 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1745 mvm->bf_allowed_vif = mvmvif;
1746 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1747 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1748 }
1749
1750 /*
1751 * P2P_DEVICE interface does not have a channel context assigned to it,
1752 * so a dedicated PHY context is allocated to it and the corresponding
1753 * MAC context is bound to it at this stage.
1754 */
1755 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1756
1757 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1758 if (!mvmvif->phy_ctxt) {
1759 ret = -ENOSPC;
1760 goto out_free_bf;
1761 }
1762
1763 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1764 ret = iwl_mvm_binding_add_vif(mvm, vif);
1765 if (ret)
1766 goto out_unref_phy;
1767
1768 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1769 if (ret)
1770 goto out_unbind;
1771
1772 /* Save a pointer to p2p device vif, so it can later be used to
1773 * update the p2p device MAC when a GO is started/stopped */
1774 mvm->p2p_device_vif = vif;
1775 }
1776
1777 iwl_mvm_vif_dbgfs_register(mvm, vif);
1778 goto out_unlock;
1779
1780 out_unbind:
1781 iwl_mvm_binding_remove_vif(mvm, vif);
1782 out_unref_phy:
1783 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1784 out_free_bf:
1785 if (mvm->bf_allowed_vif == mvmvif) {
1786 mvm->bf_allowed_vif = NULL;
1787 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1788 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1789 }
1790 out_remove_mac:
1791 mvmvif->phy_ctxt = NULL;
1792 iwl_mvm_mac_ctxt_remove(mvm, vif);
1793 out_release:
1794 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1795 mvm->vif_count--;
1796
1797 iwl_mvm_mac_ctxt_release(mvm, vif);
1798 out_unlock:
1799 mutex_unlock(&mvm->mutex);
1800
1801 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1802
1803 return ret;
1804 }
1805
iwl_mvm_prepare_mac_removal(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1806 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1807 struct ieee80211_vif *vif)
1808 {
1809 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1810
1811 if (tfd_msk) {
1812 /*
1813 * mac80211 first removes all the stations of the vif and
1814 * then removes the vif. When it removes a station it also
1815 * flushes the AMPDU session. So by now, all the AMPDU sessions
1816 * of all the stations of this vif are closed, and the queues
1817 * of these AMPDU sessions are properly closed.
1818 * We still need to take care of the shared queues of the vif.
1819 * Flush them here.
1820 */
1821 mutex_lock(&mvm->mutex);
1822 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1823 mutex_unlock(&mvm->mutex);
1824
1825 /*
1826 * There are transports that buffer a few frames in the host.
1827 * For these, the flush above isn't enough since while we were
1828 * flushing, the transport might have sent more frames to the
1829 * device. To solve this, wait here until the transport is
1830 * empty. Technically, this could have replaced the flush
1831 * above, but flush is much faster than draining. So flush
1832 * first, and drain to make sure we have no frames in the
1833 * transport anymore.
1834 * If a station still had frames on the shared queues, it is
1835 * already marked as draining, so to complete the draining, we
1836 * just need to wait until the transport is empty.
1837 */
1838 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1839 }
1840
1841 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1842 /*
1843 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1844 * We assume here that all the packets sent to the OFFCHANNEL
1845 * queue are sent in ROC session.
1846 */
1847 flush_work(&mvm->roc_done_wk);
1848 } else {
1849 /*
1850 * By now, all the AC queues are empty. The AGG queues are
1851 * empty too. We already got all the Tx responses for all the
1852 * packets in the queues. The drain work can have been
1853 * triggered. Flush it.
1854 */
1855 flush_work(&mvm->sta_drained_wk);
1856 }
1857 }
1858
iwl_mvm_mac_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1859 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1860 struct ieee80211_vif *vif)
1861 {
1862 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1863 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1864
1865 iwl_mvm_prepare_mac_removal(mvm, vif);
1866
1867 mutex_lock(&mvm->mutex);
1868
1869 if (mvm->bf_allowed_vif == mvmvif) {
1870 mvm->bf_allowed_vif = NULL;
1871 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1872 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1873 }
1874
1875 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1876
1877 /*
1878 * For AP/GO interface, the tear down of the resources allocated to the
1879 * interface is be handled as part of the stop_ap flow.
1880 */
1881 if (vif->type == NL80211_IFTYPE_AP ||
1882 vif->type == NL80211_IFTYPE_ADHOC) {
1883 #ifdef CONFIG_NL80211_TESTMODE
1884 if (vif == mvm->noa_vif) {
1885 mvm->noa_vif = NULL;
1886 mvm->noa_duration = 0;
1887 }
1888 #endif
1889 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1890 goto out_release;
1891 }
1892
1893 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1894 mvm->p2p_device_vif = NULL;
1895 iwl_mvm_rm_bcast_sta(mvm, vif);
1896 iwl_mvm_binding_remove_vif(mvm, vif);
1897 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1898 mvmvif->phy_ctxt = NULL;
1899 }
1900
1901 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1902 mvm->vif_count--;
1903
1904 iwl_mvm_power_update_mac(mvm);
1905 iwl_mvm_mac_ctxt_remove(mvm, vif);
1906
1907 out_release:
1908 iwl_mvm_mac_ctxt_release(mvm, vif);
1909 mutex_unlock(&mvm->mutex);
1910 }
1911
iwl_mvm_mac_config(struct ieee80211_hw * hw,u32 changed)1912 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1913 {
1914 return 0;
1915 }
1916
1917 struct iwl_mvm_mc_iter_data {
1918 struct iwl_mvm *mvm;
1919 int port_id;
1920 };
1921
iwl_mvm_mc_iface_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)1922 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1923 struct ieee80211_vif *vif)
1924 {
1925 struct iwl_mvm_mc_iter_data *data = _data;
1926 struct iwl_mvm *mvm = data->mvm;
1927 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1928 struct iwl_host_cmd hcmd = {
1929 .id = MCAST_FILTER_CMD,
1930 .flags = CMD_ASYNC,
1931 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1932 };
1933 int ret, len;
1934
1935 /* if we don't have free ports, mcast frames will be dropped */
1936 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1937 return;
1938
1939 if (vif->type != NL80211_IFTYPE_STATION ||
1940 !vif->bss_conf.assoc)
1941 return;
1942
1943 cmd->port_id = data->port_id++;
1944 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1945 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1946
1947 hcmd.len[0] = len;
1948 hcmd.data[0] = cmd;
1949
1950 ret = iwl_mvm_send_cmd(mvm, &hcmd);
1951 if (ret)
1952 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1953 }
1954
iwl_mvm_recalc_multicast(struct iwl_mvm * mvm)1955 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1956 {
1957 struct iwl_mvm_mc_iter_data iter_data = {
1958 .mvm = mvm,
1959 };
1960 int ret;
1961
1962 lockdep_assert_held(&mvm->mutex);
1963
1964 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1965 return;
1966
1967 ieee80211_iterate_active_interfaces_atomic(
1968 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1969 iwl_mvm_mc_iface_iterator, &iter_data);
1970
1971 /*
1972 * Send a (synchronous) ech command so that we wait for the
1973 * multiple asynchronous MCAST_FILTER_CMD commands sent by
1974 * the interface iterator. Otherwise, we might get here over
1975 * and over again (by userspace just sending a lot of these)
1976 * and the CPU can send them faster than the firmware can
1977 * process them.
1978 * Note that the CPU is still faster - but with this we'll
1979 * actually send fewer commands overall because the CPU will
1980 * not schedule the work in mac80211 as frequently if it's
1981 * still running when rescheduled (possibly multiple times).
1982 */
1983 ret = iwl_mvm_send_cmd_pdu(mvm, ECHO_CMD, 0, 0, NULL);
1984 if (ret)
1985 IWL_ERR(mvm, "Failed to synchronize multicast groups update\n");
1986 }
1987
iwl_mvm_prepare_multicast(struct ieee80211_hw * hw,struct netdev_hw_addr_list * mc_list)1988 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1989 struct netdev_hw_addr_list *mc_list)
1990 {
1991 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1992 struct iwl_mcast_filter_cmd *cmd;
1993 struct netdev_hw_addr *addr;
1994 int addr_count;
1995 bool pass_all;
1996 int len;
1997
1998 addr_count = netdev_hw_addr_list_count(mc_list);
1999 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
2000 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
2001 if (pass_all)
2002 addr_count = 0;
2003
2004 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
2005 cmd = kzalloc(len, GFP_ATOMIC);
2006 if (!cmd)
2007 return 0;
2008
2009 if (pass_all) {
2010 cmd->pass_all = 1;
2011 return (u64)(unsigned long)cmd;
2012 }
2013
2014 netdev_hw_addr_list_for_each(addr, mc_list) {
2015 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
2016 cmd->count, addr->addr);
2017 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
2018 addr->addr, ETH_ALEN);
2019 cmd->count++;
2020 }
2021
2022 return (u64)(unsigned long)cmd;
2023 }
2024
iwl_mvm_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)2025 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
2026 unsigned int changed_flags,
2027 unsigned int *total_flags,
2028 u64 multicast)
2029 {
2030 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2031 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
2032
2033 mutex_lock(&mvm->mutex);
2034
2035 /* replace previous configuration */
2036 kfree(mvm->mcast_filter_cmd);
2037 mvm->mcast_filter_cmd = cmd;
2038
2039 if (!cmd)
2040 goto out;
2041
2042 iwl_mvm_recalc_multicast(mvm);
2043 out:
2044 mutex_unlock(&mvm->mutex);
2045 *total_flags = 0;
2046 }
2047
iwl_mvm_config_iface_filter(struct ieee80211_hw * hw,struct ieee80211_vif * vif,unsigned int filter_flags,unsigned int changed_flags)2048 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
2049 struct ieee80211_vif *vif,
2050 unsigned int filter_flags,
2051 unsigned int changed_flags)
2052 {
2053 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2054
2055 /* We support only filter for probe requests */
2056 if (!(changed_flags & FIF_PROBE_REQ))
2057 return;
2058
2059 /* Supported only for p2p client interfaces */
2060 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
2061 !vif->p2p)
2062 return;
2063
2064 mutex_lock(&mvm->mutex);
2065 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2066 mutex_unlock(&mvm->mutex);
2067 }
2068
2069 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
2070 struct iwl_bcast_iter_data {
2071 struct iwl_mvm *mvm;
2072 struct iwl_bcast_filter_cmd *cmd;
2073 u8 current_filter;
2074 };
2075
2076 static void
iwl_mvm_set_bcast_filter(struct ieee80211_vif * vif,const struct iwl_fw_bcast_filter * in_filter,struct iwl_fw_bcast_filter * out_filter)2077 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
2078 const struct iwl_fw_bcast_filter *in_filter,
2079 struct iwl_fw_bcast_filter *out_filter)
2080 {
2081 struct iwl_fw_bcast_filter_attr *attr;
2082 int i;
2083
2084 memcpy(out_filter, in_filter, sizeof(*out_filter));
2085
2086 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
2087 attr = &out_filter->attrs[i];
2088
2089 if (!attr->mask)
2090 break;
2091
2092 switch (attr->reserved1) {
2093 case cpu_to_le16(BC_FILTER_MAGIC_IP):
2094 if (vif->bss_conf.arp_addr_cnt != 1) {
2095 attr->mask = 0;
2096 continue;
2097 }
2098
2099 attr->val = vif->bss_conf.arp_addr_list[0];
2100 break;
2101 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
2102 attr->val = *(__be32 *)&vif->addr[2];
2103 break;
2104 default:
2105 break;
2106 }
2107 attr->reserved1 = 0;
2108 out_filter->num_attrs++;
2109 }
2110 }
2111
iwl_mvm_bcast_filter_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)2112 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
2113 struct ieee80211_vif *vif)
2114 {
2115 struct iwl_bcast_iter_data *data = _data;
2116 struct iwl_mvm *mvm = data->mvm;
2117 struct iwl_bcast_filter_cmd *cmd = data->cmd;
2118 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2119 struct iwl_fw_bcast_mac *bcast_mac;
2120 int i;
2121
2122 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
2123 return;
2124
2125 bcast_mac = &cmd->macs[mvmvif->id];
2126
2127 /*
2128 * enable filtering only for associated stations, but not for P2P
2129 * Clients
2130 */
2131 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
2132 !vif->bss_conf.assoc)
2133 return;
2134
2135 bcast_mac->default_discard = 1;
2136
2137 /* copy all configured filters */
2138 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
2139 /*
2140 * Make sure we don't exceed our filters limit.
2141 * if there is still a valid filter to be configured,
2142 * be on the safe side and just allow bcast for this mac.
2143 */
2144 if (WARN_ON_ONCE(data->current_filter >=
2145 ARRAY_SIZE(cmd->filters))) {
2146 bcast_mac->default_discard = 0;
2147 bcast_mac->attached_filters = 0;
2148 break;
2149 }
2150
2151 iwl_mvm_set_bcast_filter(vif,
2152 &mvm->bcast_filters[i],
2153 &cmd->filters[data->current_filter]);
2154
2155 /* skip current filter if it contains no attributes */
2156 if (!cmd->filters[data->current_filter].num_attrs)
2157 continue;
2158
2159 /* attach the filter to current mac */
2160 bcast_mac->attached_filters |=
2161 cpu_to_le16(BIT(data->current_filter));
2162
2163 data->current_filter++;
2164 }
2165 }
2166
iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm * mvm,struct iwl_bcast_filter_cmd * cmd)2167 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
2168 struct iwl_bcast_filter_cmd *cmd)
2169 {
2170 struct iwl_bcast_iter_data iter_data = {
2171 .mvm = mvm,
2172 .cmd = cmd,
2173 };
2174
2175 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
2176 return false;
2177
2178 memset(cmd, 0, sizeof(*cmd));
2179 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
2180 cmd->max_macs = ARRAY_SIZE(cmd->macs);
2181
2182 #ifdef CONFIG_IWLWIFI_DEBUGFS
2183 /* use debugfs filters/macs if override is configured */
2184 if (mvm->dbgfs_bcast_filtering.override) {
2185 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
2186 sizeof(cmd->filters));
2187 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
2188 sizeof(cmd->macs));
2189 return true;
2190 }
2191 #endif
2192
2193 /* if no filters are configured, do nothing */
2194 if (!mvm->bcast_filters)
2195 return false;
2196
2197 /* configure and attach these filters for each associated sta vif */
2198 ieee80211_iterate_active_interfaces(
2199 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2200 iwl_mvm_bcast_filter_iterator, &iter_data);
2201
2202 return true;
2203 }
iwl_mvm_configure_bcast_filter(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2204 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2205 struct ieee80211_vif *vif)
2206 {
2207 struct iwl_bcast_filter_cmd cmd;
2208
2209 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
2210 return 0;
2211
2212 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
2213 return 0;
2214
2215 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
2216 sizeof(cmd), &cmd);
2217 }
2218 #else
iwl_mvm_configure_bcast_filter(struct iwl_mvm * mvm,struct ieee80211_vif * vif)2219 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2220 struct ieee80211_vif *vif)
2221 {
2222 return 0;
2223 }
2224 #endif
2225
iwl_mvm_bss_info_changed_station(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u32 changes)2226 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2227 struct ieee80211_vif *vif,
2228 struct ieee80211_bss_conf *bss_conf,
2229 u32 changes)
2230 {
2231 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2232 int ret;
2233
2234 /*
2235 * Re-calculate the tsf id, as the master-slave relations depend on the
2236 * beacon interval, which was not known when the station interface was
2237 * added.
2238 */
2239 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
2240 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2241
2242 /*
2243 * If we're not associated yet, take the (new) BSSID before associating
2244 * so the firmware knows. If we're already associated, then use the old
2245 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2246 * branch for disassociation below.
2247 */
2248 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2249 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2250
2251 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2252 if (ret)
2253 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2254
2255 /* after sending it once, adopt mac80211 data */
2256 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2257 mvmvif->associated = bss_conf->assoc;
2258
2259 if (changes & BSS_CHANGED_ASSOC) {
2260 if (bss_conf->assoc) {
2261 /* clear statistics to get clean beacon counter */
2262 iwl_mvm_request_statistics(mvm, true);
2263 memset(&mvmvif->beacon_stats, 0,
2264 sizeof(mvmvif->beacon_stats));
2265
2266 /* add quota for this interface */
2267 ret = iwl_mvm_update_quotas(mvm, true, NULL);
2268 if (ret) {
2269 IWL_ERR(mvm, "failed to update quotas\n");
2270 return;
2271 }
2272
2273 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2274 &mvm->status)) {
2275 /*
2276 * If we're restarting then the firmware will
2277 * obviously have lost synchronisation with
2278 * the AP. It will attempt to synchronise by
2279 * itself, but we can make it more reliable by
2280 * scheduling a session protection time event.
2281 *
2282 * The firmware needs to receive a beacon to
2283 * catch up with synchronisation, use 110% of
2284 * the beacon interval.
2285 *
2286 * Set a large maximum delay to allow for more
2287 * than a single interface.
2288 */
2289 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2290 iwl_mvm_protect_session(mvm, vif, dur, dur,
2291 5 * dur, false);
2292 }
2293
2294 iwl_mvm_sf_update(mvm, vif, false);
2295 iwl_mvm_power_vif_assoc(mvm, vif);
2296 if (vif->p2p) {
2297 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2298 iwl_mvm_update_smps(mvm, vif,
2299 IWL_MVM_SMPS_REQ_PROT,
2300 IEEE80211_SMPS_DYNAMIC);
2301 }
2302 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2303 /*
2304 * If update fails - SF might be running in associated
2305 * mode while disassociated - which is forbidden.
2306 */
2307 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2308 "Failed to update SF upon disassociation\n");
2309
2310 /* remove AP station now that the MAC is unassoc */
2311 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
2312 if (ret)
2313 IWL_ERR(mvm, "failed to remove AP station\n");
2314
2315 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2316 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
2317 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
2318 /* remove quota for this interface */
2319 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2320 if (ret)
2321 IWL_ERR(mvm, "failed to update quotas\n");
2322
2323 if (vif->p2p)
2324 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2325
2326 /* this will take the cleared BSSID from bss_conf */
2327 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2328 if (ret)
2329 IWL_ERR(mvm,
2330 "failed to update MAC %pM (clear after unassoc)\n",
2331 vif->addr);
2332 }
2333
2334 iwl_mvm_recalc_multicast(mvm);
2335 iwl_mvm_configure_bcast_filter(mvm, vif);
2336
2337 /* reset rssi values */
2338 mvmvif->bf_data.ave_beacon_signal = 0;
2339
2340 iwl_mvm_bt_coex_vif_change(mvm);
2341 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2342 IEEE80211_SMPS_AUTOMATIC);
2343 } else if (changes & BSS_CHANGED_BEACON_INFO) {
2344 /*
2345 * We received a beacon _after_ association so
2346 * remove the session protection.
2347 */
2348 iwl_mvm_remove_time_event(mvm, mvmvif,
2349 &mvmvif->time_event_data);
2350 }
2351
2352 if (changes & BSS_CHANGED_BEACON_INFO) {
2353 iwl_mvm_sf_update(mvm, vif, false);
2354 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2355 }
2356
2357 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
2358 ret = iwl_mvm_power_update_mac(mvm);
2359 if (ret)
2360 IWL_ERR(mvm, "failed to update power mode\n");
2361 }
2362
2363 if (changes & BSS_CHANGED_TXPOWER) {
2364 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2365 bss_conf->txpower);
2366 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2367 }
2368
2369 if (changes & BSS_CHANGED_CQM) {
2370 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2371 /* reset cqm events tracking */
2372 mvmvif->bf_data.last_cqm_event = 0;
2373 if (mvmvif->bf_data.bf_enabled) {
2374 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2375 if (ret)
2376 IWL_ERR(mvm,
2377 "failed to update CQM thresholds\n");
2378 }
2379 }
2380
2381 if (changes & BSS_CHANGED_ARP_FILTER) {
2382 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2383 iwl_mvm_configure_bcast_filter(mvm, vif);
2384 }
2385 }
2386
iwl_mvm_start_ap_ibss(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2387 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2388 struct ieee80211_vif *vif)
2389 {
2390 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2391 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2392 int ret;
2393
2394 /*
2395 * iwl_mvm_mac_ctxt_add() might read directly from the device
2396 * (the system time), so make sure it is available.
2397 */
2398 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2399 if (ret)
2400 return ret;
2401
2402 mutex_lock(&mvm->mutex);
2403
2404 /* Send the beacon template */
2405 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2406 if (ret)
2407 goto out_unlock;
2408
2409 /*
2410 * Re-calculate the tsf id, as the master-slave relations depend on the
2411 * beacon interval, which was not known when the AP interface was added.
2412 */
2413 if (vif->type == NL80211_IFTYPE_AP)
2414 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2415
2416 mvmvif->ap_assoc_sta_count = 0;
2417
2418 /* Add the mac context */
2419 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2420 if (ret)
2421 goto out_unlock;
2422
2423 /* Perform the binding */
2424 ret = iwl_mvm_binding_add_vif(mvm, vif);
2425 if (ret)
2426 goto out_remove;
2427
2428 /* Send the bcast station. At this stage the TBTT and DTIM time events
2429 * are added and applied to the scheduler */
2430 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2431 if (ret)
2432 goto out_unbind;
2433
2434 /* must be set before quota calculations */
2435 mvmvif->ap_ibss_active = true;
2436
2437 /* power updated needs to be done before quotas */
2438 iwl_mvm_power_update_mac(mvm);
2439
2440 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2441 if (ret)
2442 goto out_quota_failed;
2443
2444 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2445 if (vif->p2p && mvm->p2p_device_vif)
2446 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2447
2448 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2449
2450 iwl_mvm_bt_coex_vif_change(mvm);
2451
2452 /* we don't support TDLS during DCM */
2453 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2454 iwl_mvm_teardown_tdls_peers(mvm);
2455
2456 goto out_unlock;
2457
2458 out_quota_failed:
2459 iwl_mvm_power_update_mac(mvm);
2460 mvmvif->ap_ibss_active = false;
2461 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2462 out_unbind:
2463 iwl_mvm_binding_remove_vif(mvm, vif);
2464 out_remove:
2465 iwl_mvm_mac_ctxt_remove(mvm, vif);
2466 out_unlock:
2467 mutex_unlock(&mvm->mutex);
2468 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2469 return ret;
2470 }
2471
iwl_mvm_stop_ap_ibss(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2472 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2473 struct ieee80211_vif *vif)
2474 {
2475 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2476 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2477
2478 iwl_mvm_prepare_mac_removal(mvm, vif);
2479
2480 mutex_lock(&mvm->mutex);
2481
2482 /* Handle AP stop while in CSA */
2483 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2484 iwl_mvm_remove_time_event(mvm, mvmvif,
2485 &mvmvif->time_event_data);
2486 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2487 mvmvif->csa_countdown = false;
2488 }
2489
2490 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2491 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2492 mvm->csa_tx_block_bcn_timeout = 0;
2493 }
2494
2495 mvmvif->ap_ibss_active = false;
2496 mvm->ap_last_beacon_gp2 = 0;
2497
2498 iwl_mvm_bt_coex_vif_change(mvm);
2499
2500 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2501
2502 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2503 if (vif->p2p && mvm->p2p_device_vif)
2504 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2505
2506 iwl_mvm_update_quotas(mvm, false, NULL);
2507 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2508 iwl_mvm_binding_remove_vif(mvm, vif);
2509
2510 iwl_mvm_power_update_mac(mvm);
2511
2512 iwl_mvm_mac_ctxt_remove(mvm, vif);
2513
2514 mutex_unlock(&mvm->mutex);
2515 }
2516
2517 static void
iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u32 changes)2518 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2519 struct ieee80211_vif *vif,
2520 struct ieee80211_bss_conf *bss_conf,
2521 u32 changes)
2522 {
2523 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2524
2525 /* Changes will be applied when the AP/IBSS is started */
2526 if (!mvmvif->ap_ibss_active)
2527 return;
2528
2529 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2530 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2531 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2532 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2533
2534 /* Need to send a new beacon template to the FW */
2535 if (changes & BSS_CHANGED_BEACON &&
2536 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2537 IWL_WARN(mvm, "Failed updating beacon data\n");
2538
2539 if (changes & BSS_CHANGED_TXPOWER) {
2540 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2541 bss_conf->txpower);
2542 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2543 }
2544
2545 }
2546
iwl_mvm_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u32 changes)2547 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2548 struct ieee80211_vif *vif,
2549 struct ieee80211_bss_conf *bss_conf,
2550 u32 changes)
2551 {
2552 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2553
2554 /*
2555 * iwl_mvm_bss_info_changed_station() might call
2556 * iwl_mvm_protect_session(), which reads directly from
2557 * the device (the system time), so make sure it is available.
2558 */
2559 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2560 return;
2561
2562 mutex_lock(&mvm->mutex);
2563
2564 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2565 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2566
2567 switch (vif->type) {
2568 case NL80211_IFTYPE_STATION:
2569 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2570 break;
2571 case NL80211_IFTYPE_AP:
2572 case NL80211_IFTYPE_ADHOC:
2573 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2574 break;
2575 default:
2576 /* shouldn't happen */
2577 WARN_ON_ONCE(1);
2578 }
2579
2580 mutex_unlock(&mvm->mutex);
2581 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2582 }
2583
iwl_mvm_mac_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_scan_request * hw_req)2584 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2585 struct ieee80211_vif *vif,
2586 struct ieee80211_scan_request *hw_req)
2587 {
2588 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2589 int ret;
2590
2591 if (hw_req->req.n_channels == 0 ||
2592 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2593 return -EINVAL;
2594
2595 mutex_lock(&mvm->mutex);
2596 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2597 mutex_unlock(&mvm->mutex);
2598
2599 return ret;
2600 }
2601
iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2602 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2603 struct ieee80211_vif *vif)
2604 {
2605 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2606
2607 mutex_lock(&mvm->mutex);
2608
2609 /* Due to a race condition, it's possible that mac80211 asks
2610 * us to stop a hw_scan when it's already stopped. This can
2611 * happen, for instance, if we stopped the scan ourselves,
2612 * called ieee80211_scan_completed() and the userspace called
2613 * cancel scan scan before ieee80211_scan_work() could run.
2614 * To handle that, simply return if the scan is not running.
2615 */
2616 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2617 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2618
2619 mutex_unlock(&mvm->mutex);
2620 }
2621
2622 static void
iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tids,int num_frames,enum ieee80211_frame_release_type reason,bool more_data)2623 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2624 struct ieee80211_sta *sta, u16 tids,
2625 int num_frames,
2626 enum ieee80211_frame_release_type reason,
2627 bool more_data)
2628 {
2629 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2630
2631 /* Called when we need to transmit (a) frame(s) from mac80211 */
2632
2633 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2634 tids, more_data, false);
2635 }
2636
2637 static void
iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tids,int num_frames,enum ieee80211_frame_release_type reason,bool more_data)2638 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2639 struct ieee80211_sta *sta, u16 tids,
2640 int num_frames,
2641 enum ieee80211_frame_release_type reason,
2642 bool more_data)
2643 {
2644 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2645
2646 /* Called when we need to transmit (a) frame(s) from agg queue */
2647
2648 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2649 tids, more_data, true);
2650 }
2651
iwl_mvm_mac_sta_notify(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum sta_notify_cmd cmd,struct ieee80211_sta * sta)2652 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2653 struct ieee80211_vif *vif,
2654 enum sta_notify_cmd cmd,
2655 struct ieee80211_sta *sta)
2656 {
2657 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2658 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2659 unsigned long txqs = 0, tids = 0;
2660 int tid;
2661
2662 spin_lock_bh(&mvmsta->lock);
2663 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2664 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2665
2666 if (tid_data->state != IWL_AGG_ON &&
2667 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2668 continue;
2669
2670 __set_bit(tid_data->txq_id, &txqs);
2671
2672 if (iwl_mvm_tid_queued(tid_data) == 0)
2673 continue;
2674
2675 __set_bit(tid, &tids);
2676 }
2677
2678 switch (cmd) {
2679 case STA_NOTIFY_SLEEP:
2680 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2681 ieee80211_sta_block_awake(hw, sta, true);
2682
2683 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2684 ieee80211_sta_set_buffered(sta, tid, true);
2685
2686 if (txqs)
2687 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2688 /*
2689 * The fw updates the STA to be asleep. Tx packets on the Tx
2690 * queues to this station will not be transmitted. The fw will
2691 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2692 */
2693 break;
2694 case STA_NOTIFY_AWAKE:
2695 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2696 break;
2697
2698 if (txqs)
2699 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2700 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2701 break;
2702 default:
2703 break;
2704 }
2705 spin_unlock_bh(&mvmsta->lock);
2706 }
2707
iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)2708 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2709 struct ieee80211_vif *vif,
2710 struct ieee80211_sta *sta)
2711 {
2712 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2713 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2714 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2715
2716 /*
2717 * This is called before mac80211 does RCU synchronisation,
2718 * so here we already invalidate our internal RCU-protected
2719 * station pointer. The rest of the code will thus no longer
2720 * be able to find the station this way, and we don't rely
2721 * on further RCU synchronisation after the sta_state()
2722 * callback deleted the station.
2723 */
2724 mutex_lock(&mvm->mutex);
2725 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2726 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2727 ERR_PTR(-ENOENT));
2728
2729 if (mvm_sta->vif->type == NL80211_IFTYPE_AP) {
2730 mvmvif->ap_assoc_sta_count--;
2731 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2732 }
2733
2734 mutex_unlock(&mvm->mutex);
2735 }
2736
iwl_mvm_check_uapsd(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const u8 * bssid)2737 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2738 const u8 *bssid)
2739 {
2740 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2741 return;
2742
2743 if (iwlwifi_mod_params.uapsd_disable) {
2744 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2745 return;
2746 }
2747
2748 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2749 }
2750
iwl_mvm_mac_sta_state(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,enum ieee80211_sta_state old_state,enum ieee80211_sta_state new_state)2751 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2752 struct ieee80211_vif *vif,
2753 struct ieee80211_sta *sta,
2754 enum ieee80211_sta_state old_state,
2755 enum ieee80211_sta_state new_state)
2756 {
2757 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2758 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2759 int ret;
2760
2761 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2762 sta->addr, old_state, new_state);
2763
2764 /* this would be a mac80211 bug ... but don't crash */
2765 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2766 return -EINVAL;
2767
2768 /* if a STA is being removed, reuse its ID */
2769 flush_work(&mvm->sta_drained_wk);
2770
2771 mutex_lock(&mvm->mutex);
2772 if (old_state == IEEE80211_STA_NOTEXIST &&
2773 new_state == IEEE80211_STA_NONE) {
2774 /*
2775 * Firmware bug - it'll crash if the beacon interval is less
2776 * than 16. We can't avoid connecting at all, so refuse the
2777 * station state change, this will cause mac80211 to abandon
2778 * attempts to connect to this AP, and eventually wpa_s will
2779 * blacklist the AP...
2780 */
2781 if (vif->type == NL80211_IFTYPE_STATION &&
2782 vif->bss_conf.beacon_int < 16) {
2783 IWL_ERR(mvm,
2784 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2785 sta->addr, vif->bss_conf.beacon_int);
2786 ret = -EINVAL;
2787 goto out_unlock;
2788 }
2789
2790 if (sta->tdls &&
2791 (vif->p2p ||
2792 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2793 IWL_MVM_TDLS_STA_COUNT ||
2794 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2795 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2796 ret = -EBUSY;
2797 goto out_unlock;
2798 }
2799
2800 ret = iwl_mvm_add_sta(mvm, vif, sta);
2801 if (sta->tdls && ret == 0)
2802 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2803 } else if (old_state == IEEE80211_STA_NONE &&
2804 new_state == IEEE80211_STA_AUTH) {
2805 /*
2806 * EBS may be disabled due to previous failures reported by FW.
2807 * Reset EBS status here assuming environment has been changed.
2808 */
2809 mvm->last_ebs_successful = true;
2810 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2811 ret = 0;
2812 } else if (old_state == IEEE80211_STA_AUTH &&
2813 new_state == IEEE80211_STA_ASSOC) {
2814 ret = iwl_mvm_update_sta(mvm, vif, sta);
2815 if (ret == 0)
2816 iwl_mvm_rs_rate_init(mvm, sta,
2817 mvmvif->phy_ctxt->channel->band,
2818 true);
2819 } else if (old_state == IEEE80211_STA_ASSOC &&
2820 new_state == IEEE80211_STA_AUTHORIZED) {
2821
2822 /* we don't support TDLS during DCM */
2823 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2824 iwl_mvm_teardown_tdls_peers(mvm);
2825
2826 /* enable beacon filtering */
2827 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2828 ret = 0;
2829 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2830 new_state == IEEE80211_STA_ASSOC) {
2831 /* disable beacon filtering */
2832 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2833 ret = 0;
2834 } else if (old_state == IEEE80211_STA_ASSOC &&
2835 new_state == IEEE80211_STA_AUTH) {
2836 ret = 0;
2837 } else if (old_state == IEEE80211_STA_AUTH &&
2838 new_state == IEEE80211_STA_NONE) {
2839 ret = 0;
2840 } else if (old_state == IEEE80211_STA_NONE &&
2841 new_state == IEEE80211_STA_NOTEXIST) {
2842 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2843 if (sta->tdls)
2844 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2845 } else {
2846 ret = -EIO;
2847 }
2848 out_unlock:
2849 mutex_unlock(&mvm->mutex);
2850
2851 if (sta->tdls && ret == 0) {
2852 if (old_state == IEEE80211_STA_NOTEXIST &&
2853 new_state == IEEE80211_STA_NONE)
2854 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2855 else if (old_state == IEEE80211_STA_NONE &&
2856 new_state == IEEE80211_STA_NOTEXIST)
2857 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2858 }
2859
2860 return ret;
2861 }
2862
iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw * hw,u32 value)2863 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2864 {
2865 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2866
2867 mvm->rts_threshold = value;
2868
2869 return 0;
2870 }
2871
iwl_mvm_sta_rc_update(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u32 changed)2872 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2873 struct ieee80211_vif *vif,
2874 struct ieee80211_sta *sta, u32 changed)
2875 {
2876 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2877
2878 if (vif->type == NL80211_IFTYPE_STATION &&
2879 changed & IEEE80211_RC_NSS_CHANGED)
2880 iwl_mvm_sf_update(mvm, vif, false);
2881 }
2882
iwl_mvm_mac_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 ac,const struct ieee80211_tx_queue_params * params)2883 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2884 struct ieee80211_vif *vif, u16 ac,
2885 const struct ieee80211_tx_queue_params *params)
2886 {
2887 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2888 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2889
2890 mvmvif->queue_params[ac] = *params;
2891
2892 /*
2893 * No need to update right away, we'll get BSS_CHANGED_QOS
2894 * The exception is P2P_DEVICE interface which needs immediate update.
2895 */
2896 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2897 int ret;
2898
2899 mutex_lock(&mvm->mutex);
2900 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2901 mutex_unlock(&mvm->mutex);
2902 return ret;
2903 }
2904 return 0;
2905 }
2906
iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2907 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2908 struct ieee80211_vif *vif)
2909 {
2910 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2911 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2912 200 + vif->bss_conf.beacon_int);
2913 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2914 100 + vif->bss_conf.beacon_int);
2915
2916 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2917 return;
2918
2919 /*
2920 * iwl_mvm_protect_session() reads directly from the device
2921 * (the system time), so make sure it is available.
2922 */
2923 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2924 return;
2925
2926 mutex_lock(&mvm->mutex);
2927 /* Try really hard to protect the session and hear a beacon */
2928 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2929 mutex_unlock(&mvm->mutex);
2930
2931 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2932 }
2933
iwl_mvm_mac_sched_scan_start(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_sched_scan_request * req,struct ieee80211_scan_ies * ies)2934 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2935 struct ieee80211_vif *vif,
2936 struct cfg80211_sched_scan_request *req,
2937 struct ieee80211_scan_ies *ies)
2938 {
2939 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2940
2941 int ret;
2942
2943 mutex_lock(&mvm->mutex);
2944
2945 if (!vif->bss_conf.idle) {
2946 ret = -EBUSY;
2947 goto out;
2948 }
2949
2950 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2951
2952 out:
2953 mutex_unlock(&mvm->mutex);
2954 return ret;
2955 }
2956
iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2957 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2958 struct ieee80211_vif *vif)
2959 {
2960 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2961 int ret;
2962
2963 mutex_lock(&mvm->mutex);
2964
2965 /* Due to a race condition, it's possible that mac80211 asks
2966 * us to stop a sched_scan when it's already stopped. This
2967 * can happen, for instance, if we stopped the scan ourselves,
2968 * called ieee80211_sched_scan_stopped() and the userspace called
2969 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2970 * could run. To handle this, simply return if the scan is
2971 * not running.
2972 */
2973 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2974 mutex_unlock(&mvm->mutex);
2975 return 0;
2976 }
2977
2978 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2979 mutex_unlock(&mvm->mutex);
2980 iwl_mvm_wait_for_async_handlers(mvm);
2981
2982 return ret;
2983 }
2984
iwl_mvm_mac_set_key(struct ieee80211_hw * hw,enum set_key_cmd cmd,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)2985 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2986 enum set_key_cmd cmd,
2987 struct ieee80211_vif *vif,
2988 struct ieee80211_sta *sta,
2989 struct ieee80211_key_conf *key)
2990 {
2991 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2992 int ret;
2993 u8 key_offset;
2994
2995 if (iwlwifi_mod_params.sw_crypto) {
2996 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2997 return -EOPNOTSUPP;
2998 }
2999
3000 switch (key->cipher) {
3001 case WLAN_CIPHER_SUITE_TKIP:
3002 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3003 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3004 break;
3005 case WLAN_CIPHER_SUITE_CCMP:
3006 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3007 break;
3008 case WLAN_CIPHER_SUITE_AES_CMAC:
3009 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
3010 break;
3011 case WLAN_CIPHER_SUITE_WEP40:
3012 case WLAN_CIPHER_SUITE_WEP104:
3013 /* For non-client mode, only use WEP keys for TX as we probably
3014 * don't have a station yet anyway and would then have to keep
3015 * track of the keys, linking them to each of the clients/peers
3016 * as they appear. For now, don't do that, for performance WEP
3017 * offload doesn't really matter much, but we need it for some
3018 * other offload features in client mode.
3019 */
3020 if (vif->type != NL80211_IFTYPE_STATION)
3021 return 0;
3022 break;
3023 default:
3024 /* currently FW supports only one optional cipher scheme */
3025 if (hw->n_cipher_schemes &&
3026 hw->cipher_schemes->cipher == key->cipher)
3027 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3028 else
3029 return -EOPNOTSUPP;
3030 }
3031
3032 mutex_lock(&mvm->mutex);
3033
3034 switch (cmd) {
3035 case SET_KEY:
3036 if ((vif->type == NL80211_IFTYPE_ADHOC ||
3037 vif->type == NL80211_IFTYPE_AP) && !sta) {
3038 /*
3039 * GTK on AP interface is a TX-only key, return 0;
3040 * on IBSS they're per-station and because we're lazy
3041 * we don't support them for RX, so do the same.
3042 */
3043 ret = 0;
3044 key->hw_key_idx = STA_KEY_IDX_INVALID;
3045 break;
3046 }
3047
3048 /* During FW restart, in order to restore the state as it was,
3049 * don't try to reprogram keys we previously failed for.
3050 */
3051 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3052 key->hw_key_idx == STA_KEY_IDX_INVALID) {
3053 IWL_DEBUG_MAC80211(mvm,
3054 "skip invalid idx key programming during restart\n");
3055 ret = 0;
3056 break;
3057 }
3058
3059 /* in HW restart reuse the index, otherwise request a new one */
3060 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3061 key_offset = key->hw_key_idx;
3062 else
3063 key_offset = STA_KEY_IDX_INVALID;
3064
3065 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3066 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
3067 if (ret) {
3068 IWL_WARN(mvm, "set key failed\n");
3069 /*
3070 * can't add key for RX, but we don't need it
3071 * in the device for TX so still return 0
3072 */
3073 key->hw_key_idx = STA_KEY_IDX_INVALID;
3074 ret = 0;
3075 }
3076
3077 break;
3078 case DISABLE_KEY:
3079 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3080 ret = 0;
3081 break;
3082 }
3083
3084 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3085 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3086 break;
3087 default:
3088 ret = -EINVAL;
3089 }
3090
3091 mutex_unlock(&mvm->mutex);
3092 return ret;
3093 }
3094
iwl_mvm_mac_update_tkip_key(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_key_conf * keyconf,struct ieee80211_sta * sta,u32 iv32,u16 * phase1key)3095 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3096 struct ieee80211_vif *vif,
3097 struct ieee80211_key_conf *keyconf,
3098 struct ieee80211_sta *sta,
3099 u32 iv32, u16 *phase1key)
3100 {
3101 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3102
3103 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3104 return;
3105
3106 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3107 }
3108
3109
iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data * notif_wait,struct iwl_rx_packet * pkt,void * data)3110 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3111 struct iwl_rx_packet *pkt, void *data)
3112 {
3113 struct iwl_mvm *mvm =
3114 container_of(notif_wait, struct iwl_mvm, notif_wait);
3115 struct iwl_hs20_roc_res *resp;
3116 int resp_len = iwl_rx_packet_payload_len(pkt);
3117 struct iwl_mvm_time_event_data *te_data = data;
3118
3119 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3120 return true;
3121
3122 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3123 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3124 return true;
3125 }
3126
3127 resp = (void *)pkt->data;
3128
3129 IWL_DEBUG_TE(mvm,
3130 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3131 resp->status, resp->event_unique_id);
3132
3133 te_data->uid = le32_to_cpu(resp->event_unique_id);
3134 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3135 te_data->uid);
3136
3137 spin_lock_bh(&mvm->time_event_lock);
3138 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3139 spin_unlock_bh(&mvm->time_event_lock);
3140
3141 return true;
3142 }
3143
3144 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 200
iwl_mvm_send_aux_roc_cmd(struct iwl_mvm * mvm,struct ieee80211_channel * channel,struct ieee80211_vif * vif,int duration)3145 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3146 struct ieee80211_channel *channel,
3147 struct ieee80211_vif *vif,
3148 int duration)
3149 {
3150 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3151 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3152 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3153 static const u16 time_event_response[] = { HOT_SPOT_CMD };
3154 struct iwl_notification_wait wait_time_event;
3155 struct iwl_hs20_roc_req aux_roc_req = {
3156 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3157 .id_and_color =
3158 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3159 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3160 /* Set the channel info data */
3161 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
3162 PHY_BAND_24 : PHY_BAND_5,
3163 .channel_info.channel = channel->hw_value,
3164 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3165 /* Set the time and duration */
3166 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3167 .apply_time_max_delay =
3168 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
3169 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
3170 };
3171
3172 /* Set the node address */
3173 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3174
3175 lockdep_assert_held(&mvm->mutex);
3176
3177 spin_lock_bh(&mvm->time_event_lock);
3178
3179 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3180 spin_unlock_bh(&mvm->time_event_lock);
3181 return -EIO;
3182 }
3183
3184 te_data->vif = vif;
3185 te_data->duration = duration;
3186 te_data->id = HOT_SPOT_CMD;
3187
3188 spin_unlock_bh(&mvm->time_event_lock);
3189
3190 /*
3191 * Use a notification wait, which really just processes the
3192 * command response and doesn't wait for anything, in order
3193 * to be able to process the response and get the UID inside
3194 * the RX path. Using CMD_WANT_SKB doesn't work because it
3195 * stores the buffer and then wakes up this thread, by which
3196 * time another notification (that the time event started)
3197 * might already be processed unsuccessfully.
3198 */
3199 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3200 time_event_response,
3201 ARRAY_SIZE(time_event_response),
3202 iwl_mvm_rx_aux_roc, te_data);
3203
3204 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3205 &aux_roc_req);
3206
3207 if (res) {
3208 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3209 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3210 goto out_clear_te;
3211 }
3212
3213 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3214 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3215 /* should never fail */
3216 WARN_ON_ONCE(res);
3217
3218 if (res) {
3219 out_clear_te:
3220 spin_lock_bh(&mvm->time_event_lock);
3221 iwl_mvm_te_clear_data(mvm, te_data);
3222 spin_unlock_bh(&mvm->time_event_lock);
3223 }
3224
3225 return res;
3226 }
3227
iwl_mvm_roc(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel * channel,int duration,enum ieee80211_roc_type type)3228 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3229 struct ieee80211_vif *vif,
3230 struct ieee80211_channel *channel,
3231 int duration,
3232 enum ieee80211_roc_type type)
3233 {
3234 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3235 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3236 struct cfg80211_chan_def chandef;
3237 struct iwl_mvm_phy_ctxt *phy_ctxt;
3238 int ret, i;
3239
3240 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3241 duration, type);
3242
3243 flush_work(&mvm->roc_done_wk);
3244
3245 mutex_lock(&mvm->mutex);
3246
3247 switch (vif->type) {
3248 case NL80211_IFTYPE_STATION:
3249 if (fw_has_capa(&mvm->fw->ucode_capa,
3250 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3251 /* Use aux roc framework (HS20) */
3252 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3253 vif, duration);
3254 goto out_unlock;
3255 }
3256 IWL_ERR(mvm, "hotspot not supported\n");
3257 ret = -EINVAL;
3258 goto out_unlock;
3259 case NL80211_IFTYPE_P2P_DEVICE:
3260 /* handle below */
3261 break;
3262 default:
3263 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3264 ret = -EINVAL;
3265 goto out_unlock;
3266 }
3267
3268 for (i = 0; i < NUM_PHY_CTX; i++) {
3269 phy_ctxt = &mvm->phy_ctxts[i];
3270 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3271 continue;
3272
3273 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3274 /*
3275 * Unbind the P2P_DEVICE from the current PHY context,
3276 * and if the PHY context is not used remove it.
3277 */
3278 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3279 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3280 goto out_unlock;
3281
3282 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3283
3284 /* Bind the P2P_DEVICE to the current PHY Context */
3285 mvmvif->phy_ctxt = phy_ctxt;
3286
3287 ret = iwl_mvm_binding_add_vif(mvm, vif);
3288 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3289 goto out_unlock;
3290
3291 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3292 goto schedule_time_event;
3293 }
3294 }
3295
3296 /* Need to update the PHY context only if the ROC channel changed */
3297 if (channel == mvmvif->phy_ctxt->channel)
3298 goto schedule_time_event;
3299
3300 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3301
3302 /*
3303 * Change the PHY context configuration as it is currently referenced
3304 * only by the P2P Device MAC
3305 */
3306 if (mvmvif->phy_ctxt->ref == 1) {
3307 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3308 &chandef, 1, 1);
3309 if (ret)
3310 goto out_unlock;
3311 } else {
3312 /*
3313 * The PHY context is shared with other MACs. Need to remove the
3314 * P2P Device from the binding, allocate an new PHY context and
3315 * create a new binding
3316 */
3317 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3318 if (!phy_ctxt) {
3319 ret = -ENOSPC;
3320 goto out_unlock;
3321 }
3322
3323 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3324 1, 1);
3325 if (ret) {
3326 IWL_ERR(mvm, "Failed to change PHY context\n");
3327 goto out_unlock;
3328 }
3329
3330 /* Unbind the P2P_DEVICE from the current PHY context */
3331 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3332 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3333 goto out_unlock;
3334
3335 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3336
3337 /* Bind the P2P_DEVICE to the new allocated PHY context */
3338 mvmvif->phy_ctxt = phy_ctxt;
3339
3340 ret = iwl_mvm_binding_add_vif(mvm, vif);
3341 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3342 goto out_unlock;
3343
3344 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3345 }
3346
3347 schedule_time_event:
3348 /* Schedule the time events */
3349 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3350
3351 out_unlock:
3352 mutex_unlock(&mvm->mutex);
3353 IWL_DEBUG_MAC80211(mvm, "leave\n");
3354 return ret;
3355 }
3356
iwl_mvm_cancel_roc(struct ieee80211_hw * hw)3357 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3358 {
3359 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3360
3361 IWL_DEBUG_MAC80211(mvm, "enter\n");
3362
3363 mutex_lock(&mvm->mutex);
3364 iwl_mvm_stop_roc(mvm);
3365 mutex_unlock(&mvm->mutex);
3366
3367 IWL_DEBUG_MAC80211(mvm, "leave\n");
3368 return 0;
3369 }
3370
__iwl_mvm_add_chanctx(struct iwl_mvm * mvm,struct ieee80211_chanctx_conf * ctx)3371 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3372 struct ieee80211_chanctx_conf *ctx)
3373 {
3374 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3375 struct iwl_mvm_phy_ctxt *phy_ctxt;
3376 int ret;
3377
3378 lockdep_assert_held(&mvm->mutex);
3379
3380 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3381
3382 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3383 if (!phy_ctxt) {
3384 ret = -ENOSPC;
3385 goto out;
3386 }
3387
3388 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3389 ctx->rx_chains_static,
3390 ctx->rx_chains_dynamic);
3391 if (ret) {
3392 IWL_ERR(mvm, "Failed to add PHY context\n");
3393 goto out;
3394 }
3395
3396 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3397 *phy_ctxt_id = phy_ctxt->id;
3398 out:
3399 return ret;
3400 }
3401
iwl_mvm_add_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)3402 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3403 struct ieee80211_chanctx_conf *ctx)
3404 {
3405 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3406 int ret;
3407
3408 mutex_lock(&mvm->mutex);
3409 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3410 mutex_unlock(&mvm->mutex);
3411
3412 return ret;
3413 }
3414
__iwl_mvm_remove_chanctx(struct iwl_mvm * mvm,struct ieee80211_chanctx_conf * ctx)3415 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3416 struct ieee80211_chanctx_conf *ctx)
3417 {
3418 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3419 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3420
3421 lockdep_assert_held(&mvm->mutex);
3422
3423 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3424 }
3425
iwl_mvm_remove_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)3426 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3427 struct ieee80211_chanctx_conf *ctx)
3428 {
3429 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3430
3431 mutex_lock(&mvm->mutex);
3432 __iwl_mvm_remove_chanctx(mvm, ctx);
3433 mutex_unlock(&mvm->mutex);
3434 }
3435
iwl_mvm_change_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx,u32 changed)3436 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3437 struct ieee80211_chanctx_conf *ctx,
3438 u32 changed)
3439 {
3440 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3441 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3442 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3443
3444 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3445 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3446 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3447 IEEE80211_CHANCTX_CHANGE_RADAR |
3448 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3449 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3450 phy_ctxt->ref, changed))
3451 return;
3452
3453 mutex_lock(&mvm->mutex);
3454 iwl_mvm_bt_coex_vif_change(mvm);
3455 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3456 ctx->rx_chains_static,
3457 ctx->rx_chains_dynamic);
3458 mutex_unlock(&mvm->mutex);
3459 }
3460
__iwl_mvm_assign_vif_chanctx(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx,bool switching_chanctx)3461 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3462 struct ieee80211_vif *vif,
3463 struct ieee80211_chanctx_conf *ctx,
3464 bool switching_chanctx)
3465 {
3466 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3467 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3468 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3469 int ret;
3470
3471 lockdep_assert_held(&mvm->mutex);
3472
3473 mvmvif->phy_ctxt = phy_ctxt;
3474
3475 switch (vif->type) {
3476 case NL80211_IFTYPE_AP:
3477 /* only needed if we're switching chanctx (i.e. during CSA) */
3478 if (switching_chanctx) {
3479 mvmvif->ap_ibss_active = true;
3480 break;
3481 }
3482 case NL80211_IFTYPE_ADHOC:
3483 /*
3484 * The AP binding flow is handled as part of the start_ap flow
3485 * (in bss_info_changed), similarly for IBSS.
3486 */
3487 ret = 0;
3488 goto out;
3489 case NL80211_IFTYPE_STATION:
3490 break;
3491 case NL80211_IFTYPE_MONITOR:
3492 /* always disable PS when a monitor interface is active */
3493 mvmvif->ps_disabled = true;
3494 break;
3495 default:
3496 ret = -EINVAL;
3497 goto out;
3498 }
3499
3500 ret = iwl_mvm_binding_add_vif(mvm, vif);
3501 if (ret)
3502 goto out;
3503
3504 /*
3505 * Power state must be updated before quotas,
3506 * otherwise fw will complain.
3507 */
3508 iwl_mvm_power_update_mac(mvm);
3509
3510 /* Setting the quota at this stage is only required for monitor
3511 * interfaces. For the other types, the bss_info changed flow
3512 * will handle quota settings.
3513 */
3514 if (vif->type == NL80211_IFTYPE_MONITOR) {
3515 mvmvif->monitor_active = true;
3516 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3517 if (ret)
3518 goto out_remove_binding;
3519 }
3520
3521 /* Handle binding during CSA */
3522 if (vif->type == NL80211_IFTYPE_AP) {
3523 iwl_mvm_update_quotas(mvm, false, NULL);
3524 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3525 }
3526
3527 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3528 u32 duration = 2 * vif->bss_conf.beacon_int;
3529
3530 /* iwl_mvm_protect_session() reads directly from the
3531 * device (the system time), so make sure it is
3532 * available.
3533 */
3534 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3535 if (ret)
3536 goto out_remove_binding;
3537
3538 /* Protect the session to make sure we hear the first
3539 * beacon on the new channel.
3540 */
3541 iwl_mvm_protect_session(mvm, vif, duration, duration,
3542 vif->bss_conf.beacon_int / 2,
3543 true);
3544
3545 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3546
3547 iwl_mvm_update_quotas(mvm, false, NULL);
3548 }
3549
3550 goto out;
3551
3552 out_remove_binding:
3553 iwl_mvm_binding_remove_vif(mvm, vif);
3554 iwl_mvm_power_update_mac(mvm);
3555 out:
3556 if (ret)
3557 mvmvif->phy_ctxt = NULL;
3558 return ret;
3559 }
iwl_mvm_assign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx)3560 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3561 struct ieee80211_vif *vif,
3562 struct ieee80211_chanctx_conf *ctx)
3563 {
3564 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3565 int ret;
3566
3567 mutex_lock(&mvm->mutex);
3568 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3569 mutex_unlock(&mvm->mutex);
3570
3571 return ret;
3572 }
3573
__iwl_mvm_unassign_vif_chanctx(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx,bool switching_chanctx)3574 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3575 struct ieee80211_vif *vif,
3576 struct ieee80211_chanctx_conf *ctx,
3577 bool switching_chanctx)
3578 {
3579 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3580 struct ieee80211_vif *disabled_vif = NULL;
3581
3582 lockdep_assert_held(&mvm->mutex);
3583
3584 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3585
3586 switch (vif->type) {
3587 case NL80211_IFTYPE_ADHOC:
3588 goto out;
3589 case NL80211_IFTYPE_MONITOR:
3590 mvmvif->monitor_active = false;
3591 mvmvif->ps_disabled = false;
3592 break;
3593 case NL80211_IFTYPE_AP:
3594 /* This part is triggered only during CSA */
3595 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3596 goto out;
3597
3598 mvmvif->csa_countdown = false;
3599
3600 /* Set CS bit on all the stations */
3601 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3602
3603 /* Save blocked iface, the timeout is set on the next beacon */
3604 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3605
3606 mvmvif->ap_ibss_active = false;
3607 break;
3608 case NL80211_IFTYPE_STATION:
3609 if (!switching_chanctx)
3610 break;
3611
3612 disabled_vif = vif;
3613
3614 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3615 break;
3616 default:
3617 break;
3618 }
3619
3620 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3621 iwl_mvm_binding_remove_vif(mvm, vif);
3622
3623 out:
3624 mvmvif->phy_ctxt = NULL;
3625 iwl_mvm_power_update_mac(mvm);
3626 }
3627
iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx)3628 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3629 struct ieee80211_vif *vif,
3630 struct ieee80211_chanctx_conf *ctx)
3631 {
3632 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3633
3634 mutex_lock(&mvm->mutex);
3635 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3636 mutex_unlock(&mvm->mutex);
3637 }
3638
3639 static int
iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm * mvm,struct ieee80211_vif_chanctx_switch * vifs)3640 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3641 struct ieee80211_vif_chanctx_switch *vifs)
3642 {
3643 int ret;
3644
3645 mutex_lock(&mvm->mutex);
3646 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3647 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3648
3649 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3650 if (ret) {
3651 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3652 goto out_reassign;
3653 }
3654
3655 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3656 true);
3657 if (ret) {
3658 IWL_ERR(mvm,
3659 "failed to assign new_ctx during channel switch\n");
3660 goto out_remove;
3661 }
3662
3663 /* we don't support TDLS during DCM - can be caused by channel switch */
3664 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3665 iwl_mvm_teardown_tdls_peers(mvm);
3666
3667 goto out;
3668
3669 out_remove:
3670 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3671
3672 out_reassign:
3673 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3674 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3675 goto out_restart;
3676 }
3677
3678 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3679 true)) {
3680 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3681 goto out_restart;
3682 }
3683
3684 goto out;
3685
3686 out_restart:
3687 /* things keep failing, better restart the hw */
3688 iwl_mvm_nic_restart(mvm, false);
3689
3690 out:
3691 mutex_unlock(&mvm->mutex);
3692
3693 return ret;
3694 }
3695
3696 static int
iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm * mvm,struct ieee80211_vif_chanctx_switch * vifs)3697 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3698 struct ieee80211_vif_chanctx_switch *vifs)
3699 {
3700 int ret;
3701
3702 mutex_lock(&mvm->mutex);
3703 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3704
3705 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3706 true);
3707 if (ret) {
3708 IWL_ERR(mvm,
3709 "failed to assign new_ctx during channel switch\n");
3710 goto out_reassign;
3711 }
3712
3713 goto out;
3714
3715 out_reassign:
3716 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3717 true)) {
3718 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3719 goto out_restart;
3720 }
3721
3722 goto out;
3723
3724 out_restart:
3725 /* things keep failing, better restart the hw */
3726 iwl_mvm_nic_restart(mvm, false);
3727
3728 out:
3729 mutex_unlock(&mvm->mutex);
3730
3731 return ret;
3732 }
3733
iwl_mvm_switch_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif_chanctx_switch * vifs,int n_vifs,enum ieee80211_chanctx_switch_mode mode)3734 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3735 struct ieee80211_vif_chanctx_switch *vifs,
3736 int n_vifs,
3737 enum ieee80211_chanctx_switch_mode mode)
3738 {
3739 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3740 int ret;
3741
3742 /* we only support a single-vif right now */
3743 if (n_vifs > 1)
3744 return -EOPNOTSUPP;
3745
3746 switch (mode) {
3747 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3748 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3749 break;
3750 case CHANCTX_SWMODE_REASSIGN_VIF:
3751 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3752 break;
3753 default:
3754 ret = -EOPNOTSUPP;
3755 break;
3756 }
3757
3758 return ret;
3759 }
3760
iwl_mvm_set_tim(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool set)3761 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3762 struct ieee80211_sta *sta,
3763 bool set)
3764 {
3765 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3766 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3767
3768 if (!mvm_sta || !mvm_sta->vif) {
3769 IWL_ERR(mvm, "Station is not associated to a vif\n");
3770 return -EINVAL;
3771 }
3772
3773 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3774 }
3775
3776 #ifdef CONFIG_NL80211_TESTMODE
3777 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3778 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3779 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3780 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3781 };
3782
__iwl_mvm_mac_testmode_cmd(struct iwl_mvm * mvm,struct ieee80211_vif * vif,void * data,int len)3783 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3784 struct ieee80211_vif *vif,
3785 void *data, int len)
3786 {
3787 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3788 int err;
3789 u32 noa_duration;
3790
3791 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3792 if (err)
3793 return err;
3794
3795 if (!tb[IWL_MVM_TM_ATTR_CMD])
3796 return -EINVAL;
3797
3798 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3799 case IWL_MVM_TM_CMD_SET_NOA:
3800 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3801 !vif->bss_conf.enable_beacon ||
3802 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3803 return -EINVAL;
3804
3805 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3806 if (noa_duration >= vif->bss_conf.beacon_int)
3807 return -EINVAL;
3808
3809 mvm->noa_duration = noa_duration;
3810 mvm->noa_vif = vif;
3811
3812 return iwl_mvm_update_quotas(mvm, false, NULL);
3813 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3814 /* must be associated client vif - ignore authorized */
3815 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3816 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3817 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3818 return -EINVAL;
3819
3820 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3821 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3822 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3823 }
3824
3825 return -EOPNOTSUPP;
3826 }
3827
iwl_mvm_mac_testmode_cmd(struct ieee80211_hw * hw,struct ieee80211_vif * vif,void * data,int len)3828 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3829 struct ieee80211_vif *vif,
3830 void *data, int len)
3831 {
3832 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3833 int err;
3834
3835 mutex_lock(&mvm->mutex);
3836 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3837 mutex_unlock(&mvm->mutex);
3838
3839 return err;
3840 }
3841 #endif
3842
iwl_mvm_channel_switch(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)3843 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3844 struct ieee80211_vif *vif,
3845 struct ieee80211_channel_switch *chsw)
3846 {
3847 /* By implementing this operation, we prevent mac80211 from
3848 * starting its own channel switch timer, so that we can call
3849 * ieee80211_chswitch_done() ourselves at the right time
3850 * (which is when the absence time event starts).
3851 */
3852
3853 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3854 "dummy channel switch op\n");
3855 }
3856
iwl_mvm_pre_channel_switch(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)3857 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3858 struct ieee80211_vif *vif,
3859 struct ieee80211_channel_switch *chsw)
3860 {
3861 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3862 struct ieee80211_vif *csa_vif;
3863 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3864 u32 apply_time;
3865 int ret;
3866
3867 mutex_lock(&mvm->mutex);
3868
3869 mvmvif->csa_failed = false;
3870
3871 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3872 chsw->chandef.center_freq1);
3873
3874 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3875
3876 switch (vif->type) {
3877 case NL80211_IFTYPE_AP:
3878 csa_vif =
3879 rcu_dereference_protected(mvm->csa_vif,
3880 lockdep_is_held(&mvm->mutex));
3881 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3882 "Another CSA is already in progress")) {
3883 ret = -EBUSY;
3884 goto out_unlock;
3885 }
3886
3887 rcu_assign_pointer(mvm->csa_vif, vif);
3888
3889 if (WARN_ONCE(mvmvif->csa_countdown,
3890 "Previous CSA countdown didn't complete")) {
3891 ret = -EBUSY;
3892 goto out_unlock;
3893 }
3894
3895 break;
3896 case NL80211_IFTYPE_STATION:
3897 /* Schedule the time event to a bit before beacon 1,
3898 * to make sure we're in the new channel when the
3899 * GO/AP arrives.
3900 */
3901 apply_time = chsw->device_timestamp +
3902 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3903 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3904
3905 if (chsw->block_tx)
3906 iwl_mvm_csa_client_absent(mvm, vif);
3907
3908 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3909 apply_time);
3910 if (mvmvif->bf_data.bf_enabled) {
3911 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3912 if (ret)
3913 goto out_unlock;
3914 }
3915
3916 break;
3917 default:
3918 break;
3919 }
3920
3921 mvmvif->ps_disabled = true;
3922
3923 ret = iwl_mvm_power_update_ps(mvm);
3924 if (ret)
3925 goto out_unlock;
3926
3927 /* we won't be on this channel any longer */
3928 iwl_mvm_teardown_tdls_peers(mvm);
3929
3930 out_unlock:
3931 mutex_unlock(&mvm->mutex);
3932
3933 return ret;
3934 }
3935
iwl_mvm_post_channel_switch(struct ieee80211_hw * hw,struct ieee80211_vif * vif)3936 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3937 struct ieee80211_vif *vif)
3938 {
3939 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3940 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3941 int ret;
3942
3943 mutex_lock(&mvm->mutex);
3944
3945 if (mvmvif->csa_failed) {
3946 mvmvif->csa_failed = false;
3947 ret = -EIO;
3948 goto out_unlock;
3949 }
3950
3951 if (vif->type == NL80211_IFTYPE_STATION) {
3952 struct iwl_mvm_sta *mvmsta;
3953
3954 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3955 mvmvif->ap_sta_id);
3956
3957 if (WARN_ON(!mvmsta)) {
3958 ret = -EIO;
3959 goto out_unlock;
3960 }
3961
3962 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3963
3964 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3965
3966 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3967 if (ret)
3968 goto out_unlock;
3969
3970 iwl_mvm_stop_session_protection(mvm, vif);
3971 }
3972
3973 mvmvif->ps_disabled = false;
3974
3975 ret = iwl_mvm_power_update_ps(mvm);
3976
3977 out_unlock:
3978 mutex_unlock(&mvm->mutex);
3979
3980 return ret;
3981 }
3982
iwl_mvm_mac_flush(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 queues,bool drop)3983 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3984 struct ieee80211_vif *vif, u32 queues, bool drop)
3985 {
3986 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3987 struct iwl_mvm_vif *mvmvif;
3988 struct iwl_mvm_sta *mvmsta;
3989 struct ieee80211_sta *sta;
3990 int i;
3991 u32 msk = 0;
3992
3993 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3994 return;
3995
3996 mutex_lock(&mvm->mutex);
3997 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3998
3999 /* flush the AP-station and all TDLS peers */
4000 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
4001 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4002 lockdep_is_held(&mvm->mutex));
4003 if (IS_ERR_OR_NULL(sta))
4004 continue;
4005
4006 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4007 if (mvmsta->vif != vif)
4008 continue;
4009
4010 /* make sure only TDLS peers or the AP are flushed */
4011 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4012
4013 msk |= mvmsta->tfd_queue_msk;
4014 }
4015
4016 if (drop) {
4017 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
4018 IWL_ERR(mvm, "flush request fail\n");
4019 mutex_unlock(&mvm->mutex);
4020 } else {
4021 mutex_unlock(&mvm->mutex);
4022
4023 /* this can take a while, and we may need/want other operations
4024 * to succeed while doing this, so do it without the mutex held
4025 */
4026 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
4027 }
4028 }
4029
iwl_mvm_mac_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)4030 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4031 struct survey_info *survey)
4032 {
4033 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4034 int ret;
4035
4036 memset(survey, 0, sizeof(*survey));
4037
4038 /* only support global statistics right now */
4039 if (idx != 0)
4040 return -ENOENT;
4041
4042 if (!fw_has_capa(&mvm->fw->ucode_capa,
4043 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4044 return -ENOENT;
4045
4046 mutex_lock(&mvm->mutex);
4047
4048 if (mvm->ucode_loaded) {
4049 ret = iwl_mvm_request_statistics(mvm, false);
4050 if (ret)
4051 goto out;
4052 }
4053
4054 survey->filled = SURVEY_INFO_TIME |
4055 SURVEY_INFO_TIME_RX |
4056 SURVEY_INFO_TIME_TX |
4057 SURVEY_INFO_TIME_SCAN;
4058 survey->time = mvm->accu_radio_stats.on_time_rf +
4059 mvm->radio_stats.on_time_rf;
4060 do_div(survey->time, USEC_PER_MSEC);
4061
4062 survey->time_rx = mvm->accu_radio_stats.rx_time +
4063 mvm->radio_stats.rx_time;
4064 do_div(survey->time_rx, USEC_PER_MSEC);
4065
4066 survey->time_tx = mvm->accu_radio_stats.tx_time +
4067 mvm->radio_stats.tx_time;
4068 do_div(survey->time_tx, USEC_PER_MSEC);
4069
4070 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4071 mvm->radio_stats.on_time_scan;
4072 do_div(survey->time_scan, USEC_PER_MSEC);
4073
4074 ret = 0;
4075 out:
4076 mutex_unlock(&mvm->mutex);
4077 return ret;
4078 }
4079
iwl_mvm_mac_sta_statistics(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct station_info * sinfo)4080 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4081 struct ieee80211_vif *vif,
4082 struct ieee80211_sta *sta,
4083 struct station_info *sinfo)
4084 {
4085 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4086 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4087 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4088
4089 /* if beacon filtering isn't on mac80211 does it anyway */
4090 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4091 return;
4092
4093 if (!vif->bss_conf.assoc)
4094 return;
4095
4096 mutex_lock(&mvm->mutex);
4097
4098 if (mvmvif->ap_sta_id != mvmsta->sta_id)
4099 goto unlock;
4100
4101 if (iwl_mvm_request_statistics(mvm, false))
4102 goto unlock;
4103
4104 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4105 mvmvif->beacon_stats.accu_num_beacons;
4106 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
4107 if (mvmvif->beacon_stats.avg_signal) {
4108 /* firmware only reports a value after RXing a few beacons */
4109 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4110 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4111 }
4112 unlock:
4113 mutex_unlock(&mvm->mutex);
4114 }
4115
iwl_mvm_event_mlme_callback(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const struct ieee80211_event * event)4116 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4117 struct ieee80211_vif *vif,
4118 const struct ieee80211_event *event)
4119 {
4120 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
4121 do { \
4122 if ((_cnt) && --(_cnt)) \
4123 break; \
4124 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
4125 } while (0)
4126
4127 struct iwl_fw_dbg_trigger_tlv *trig;
4128 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4129
4130 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4131 return;
4132
4133 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4134 trig_mlme = (void *)trig->data;
4135 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4136 return;
4137
4138 if (event->u.mlme.data == ASSOC_EVENT) {
4139 if (event->u.mlme.status == MLME_DENIED)
4140 CHECK_MLME_TRIGGER(mvm, trig, buf,
4141 trig_mlme->stop_assoc_denied,
4142 "DENIED ASSOC: reason %d",
4143 event->u.mlme.reason);
4144 else if (event->u.mlme.status == MLME_TIMEOUT)
4145 CHECK_MLME_TRIGGER(mvm, trig, buf,
4146 trig_mlme->stop_assoc_timeout,
4147 "ASSOC TIMEOUT");
4148 } else if (event->u.mlme.data == AUTH_EVENT) {
4149 if (event->u.mlme.status == MLME_DENIED)
4150 CHECK_MLME_TRIGGER(mvm, trig, buf,
4151 trig_mlme->stop_auth_denied,
4152 "DENIED AUTH: reason %d",
4153 event->u.mlme.reason);
4154 else if (event->u.mlme.status == MLME_TIMEOUT)
4155 CHECK_MLME_TRIGGER(mvm, trig, buf,
4156 trig_mlme->stop_auth_timeout,
4157 "AUTH TIMEOUT");
4158 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4159 CHECK_MLME_TRIGGER(mvm, trig, buf,
4160 trig_mlme->stop_rx_deauth,
4161 "DEAUTH RX %d", event->u.mlme.reason);
4162 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4163 CHECK_MLME_TRIGGER(mvm, trig, buf,
4164 trig_mlme->stop_tx_deauth,
4165 "DEAUTH TX %d", event->u.mlme.reason);
4166 }
4167 #undef CHECK_MLME_TRIGGER
4168 }
4169
iwl_mvm_event_bar_rx_callback(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const struct ieee80211_event * event)4170 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4171 struct ieee80211_vif *vif,
4172 const struct ieee80211_event *event)
4173 {
4174 struct iwl_fw_dbg_trigger_tlv *trig;
4175 struct iwl_fw_dbg_trigger_ba *ba_trig;
4176
4177 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4178 return;
4179
4180 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4181 ba_trig = (void *)trig->data;
4182 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4183 return;
4184
4185 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4186 return;
4187
4188 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4189 "BAR received from %pM, tid %d, ssn %d",
4190 event->u.ba.sta->addr, event->u.ba.tid,
4191 event->u.ba.ssn);
4192 }
4193
4194 static void
iwl_mvm_event_frame_timeout_callback(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const struct ieee80211_event * event)4195 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4196 struct ieee80211_vif *vif,
4197 const struct ieee80211_event *event)
4198 {
4199 struct iwl_fw_dbg_trigger_tlv *trig;
4200 struct iwl_fw_dbg_trigger_ba *ba_trig;
4201
4202 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4203 return;
4204
4205 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4206 ba_trig = (void *)trig->data;
4207 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4208 return;
4209
4210 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4211 return;
4212
4213 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4214 "Frame from %pM timed out, tid %d",
4215 event->u.ba.sta->addr, event->u.ba.tid);
4216 }
4217
iwl_mvm_mac_event_callback(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const struct ieee80211_event * event)4218 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4219 struct ieee80211_vif *vif,
4220 const struct ieee80211_event *event)
4221 {
4222 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4223
4224 switch (event->type) {
4225 case MLME_EVENT:
4226 iwl_mvm_event_mlme_callback(mvm, vif, event);
4227 break;
4228 case BAR_RX_EVENT:
4229 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4230 break;
4231 case BA_FRAME_TIMEOUT:
4232 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4233 break;
4234 default:
4235 break;
4236 }
4237 }
4238
4239 const struct ieee80211_ops iwl_mvm_hw_ops = {
4240 .tx = iwl_mvm_mac_tx,
4241 .ampdu_action = iwl_mvm_mac_ampdu_action,
4242 .start = iwl_mvm_mac_start,
4243 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4244 .stop = iwl_mvm_mac_stop,
4245 .add_interface = iwl_mvm_mac_add_interface,
4246 .remove_interface = iwl_mvm_mac_remove_interface,
4247 .config = iwl_mvm_mac_config,
4248 .prepare_multicast = iwl_mvm_prepare_multicast,
4249 .configure_filter = iwl_mvm_configure_filter,
4250 .config_iface_filter = iwl_mvm_config_iface_filter,
4251 .bss_info_changed = iwl_mvm_bss_info_changed,
4252 .hw_scan = iwl_mvm_mac_hw_scan,
4253 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4254 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4255 .sta_state = iwl_mvm_mac_sta_state,
4256 .sta_notify = iwl_mvm_mac_sta_notify,
4257 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4258 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4259 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4260 .sta_rc_update = iwl_mvm_sta_rc_update,
4261 .conf_tx = iwl_mvm_mac_conf_tx,
4262 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4263 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4264 .flush = iwl_mvm_mac_flush,
4265 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4266 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4267 .set_key = iwl_mvm_mac_set_key,
4268 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4269 .remain_on_channel = iwl_mvm_roc,
4270 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4271 .add_chanctx = iwl_mvm_add_chanctx,
4272 .remove_chanctx = iwl_mvm_remove_chanctx,
4273 .change_chanctx = iwl_mvm_change_chanctx,
4274 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4275 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4276 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4277
4278 .start_ap = iwl_mvm_start_ap_ibss,
4279 .stop_ap = iwl_mvm_stop_ap_ibss,
4280 .join_ibss = iwl_mvm_start_ap_ibss,
4281 .leave_ibss = iwl_mvm_stop_ap_ibss,
4282
4283 .set_tim = iwl_mvm_set_tim,
4284
4285 .channel_switch = iwl_mvm_channel_switch,
4286 .pre_channel_switch = iwl_mvm_pre_channel_switch,
4287 .post_channel_switch = iwl_mvm_post_channel_switch,
4288
4289 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4290 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4291 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4292
4293 .event_callback = iwl_mvm_mac_event_callback,
4294
4295 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4296
4297 #ifdef CONFIG_PM_SLEEP
4298 /* look at d3.c */
4299 .suspend = iwl_mvm_suspend,
4300 .resume = iwl_mvm_resume,
4301 .set_wakeup = iwl_mvm_set_wakeup,
4302 .set_rekey_data = iwl_mvm_set_rekey_data,
4303 #if IS_ENABLED(CONFIG_IPV6)
4304 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4305 #endif
4306 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4307 #endif
4308 .get_survey = iwl_mvm_mac_get_survey,
4309 .sta_statistics = iwl_mvm_mac_sta_statistics,
4310 };
4311