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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / wireless / intel / iwlwifi / mvm / mac80211.c
blob6717f25c46b1c12b894dabdb0f2e363e815218b5
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 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
11 * Copyright(c) 2018 - 2019 Intel Corporation
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of version 2 of the GNU General Public License as
15 * published by the Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * The full GNU General Public License is included in this distribution
23 * in the file called COPYING.
24 *
25 * Contact Information:
26 * Intel Linux Wireless <linuxwifi@intel.com>
27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *
29 * BSD LICENSE
30 *
31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
32 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
33 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
34 * Copyright(c) 2018 - 2019 Intel Corporation
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 *
41 * * Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * * Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in
45 * the documentation and/or other materials provided with the
46 * distribution.
47 * * Neither the name Intel Corporation nor the names of its
48 * contributors may be used to endorse or promote products derived
49 * from this software without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *
63 *****************************************************************************/
64 #include <linux/kernel.h>
65 #include <linux/slab.h>
66 #include <linux/skbuff.h>
67 #include <linux/netdevice.h>
68 #include <linux/etherdevice.h>
69 #include <linux/ip.h>
70 #include <linux/if_arp.h>
71 #include <linux/time.h>
72 #include <net/mac80211.h>
73 #include <net/ieee80211_radiotap.h>
74 #include <net/tcp.h>
75
76 #include "iwl-op-mode.h"
77 #include "iwl-io.h"
78 #include "mvm.h"
79 #include "sta.h"
80 #include "time-event.h"
81 #include "iwl-eeprom-parse.h"
82 #include "iwl-phy-db.h"
83 #include "testmode.h"
84 #include "fw/error-dump.h"
85 #include "iwl-prph.h"
86 #include "iwl-nvm-parse.h"
87
88 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
89 {
90 .max = 1,
91 .types = BIT(NL80211_IFTYPE_STATION),
92 },
93 {
94 .max = 1,
95 .types = BIT(NL80211_IFTYPE_AP) |
96 BIT(NL80211_IFTYPE_P2P_CLIENT) |
97 BIT(NL80211_IFTYPE_P2P_GO),
98 },
99 {
100 .max = 1,
101 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
102 },
103 };
104
105 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
106 {
107 .num_different_channels = 2,
108 .max_interfaces = 3,
109 .limits = iwl_mvm_limits,
110 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
111 },
112 };
113
114 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
115 /*
116 * Use the reserved field to indicate magic values.
117 * these values will only be used internally by the driver,
118 * and won't make it to the fw (reserved will be 0).
119 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
120 * be the vif's ip address. in case there is not a single
121 * ip address (0, or more than 1), this attribute will
122 * be skipped.
123 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
124 * the LSB bytes of the vif's mac address
125 */
126 enum {
127 BC_FILTER_MAGIC_NONE = 0,
128 BC_FILTER_MAGIC_IP,
129 BC_FILTER_MAGIC_MAC,
130 };
131
132 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
133 {
134 /* arp */
135 .discard = 0,
136 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
137 .attrs = {
138 {
139 /* frame type - arp, hw type - ethernet */
140 .offset_type =
141 BCAST_FILTER_OFFSET_PAYLOAD_START,
142 .offset = sizeof(rfc1042_header),
143 .val = cpu_to_be32(0x08060001),
144 .mask = cpu_to_be32(0xffffffff),
145 },
146 {
147 /* arp dest ip */
148 .offset_type =
149 BCAST_FILTER_OFFSET_PAYLOAD_START,
150 .offset = sizeof(rfc1042_header) + 2 +
151 sizeof(struct arphdr) +
152 ETH_ALEN + sizeof(__be32) +
153 ETH_ALEN,
154 .mask = cpu_to_be32(0xffffffff),
155 /* mark it as special field */
156 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
157 },
158 },
159 },
160 {
161 /* dhcp offer bcast */
162 .discard = 0,
163 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
164 .attrs = {
165 {
166 /* udp dest port - 68 (bootp client)*/
167 .offset_type = BCAST_FILTER_OFFSET_IP_END,
168 .offset = offsetof(struct udphdr, dest),
169 .val = cpu_to_be32(0x00440000),
170 .mask = cpu_to_be32(0xffff0000),
171 },
172 {
173 /* dhcp - lsb bytes of client hw address */
174 .offset_type = BCAST_FILTER_OFFSET_IP_END,
175 .offset = 38,
176 .mask = cpu_to_be32(0xffffffff),
177 /* mark it as special field */
178 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
179 },
180 },
181 },
182 /* last filter must be empty */
183 {},
184 };
185 #endif
186
187 static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = {
188 .max_peers = IWL_MVM_TOF_MAX_APS,
189 .report_ap_tsf = 1,
190 .randomize_mac_addr = 1,
191
192 .ftm = {
193 .supported = 1,
194 .asap = 1,
195 .non_asap = 1,
196 .request_lci = 1,
197 .request_civicloc = 1,
198 .max_bursts_exponent = -1, /* all supported */
199 .max_ftms_per_burst = 0, /* no limits */
200 .bandwidths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
201 BIT(NL80211_CHAN_WIDTH_20) |
202 BIT(NL80211_CHAN_WIDTH_40) |
203 BIT(NL80211_CHAN_WIDTH_80),
204 .preambles = BIT(NL80211_PREAMBLE_LEGACY) |
205 BIT(NL80211_PREAMBLE_HT) |
206 BIT(NL80211_PREAMBLE_VHT),
207 },
208 };
209
210 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
211 enum set_key_cmd cmd,
212 struct ieee80211_vif *vif,
213 struct ieee80211_sta *sta,
214 struct ieee80211_key_conf *key);
215
216 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
217 {
218 int i;
219
220 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
221 for (i = 0; i < NUM_PHY_CTX; i++) {
222 mvm->phy_ctxts[i].id = i;
223 mvm->phy_ctxts[i].ref = 0;
224 }
225 }
226
227 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
228 const char *alpha2,
229 enum iwl_mcc_source src_id,
230 bool *changed)
231 {
232 struct ieee80211_regdomain *regd = NULL;
233 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
234 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
235 struct iwl_mcc_update_resp *resp;
236
237 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
238
239 lockdep_assert_held(&mvm->mutex);
240
241 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
242 if (IS_ERR_OR_NULL(resp)) {
243 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
244 PTR_ERR_OR_ZERO(resp));
245 goto out;
246 }
247
248 if (changed) {
249 u32 status = le32_to_cpu(resp->status);
250
251 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE ||
252 status == MCC_RESP_ILLEGAL);
253 }
254
255 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
256 __le32_to_cpu(resp->n_channels),
257 resp->channels,
258 __le16_to_cpu(resp->mcc),
259 __le16_to_cpu(resp->geo_info),
260 __le16_to_cpu(resp->cap));
261 /* Store the return source id */
262 src_id = resp->source_id;
263 kfree(resp);
264 if (IS_ERR_OR_NULL(regd)) {
265 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
266 PTR_ERR_OR_ZERO(regd));
267 goto out;
268 }
269
270 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
271 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
272 mvm->lar_regdom_set = true;
273 mvm->mcc_src = src_id;
274
275 out:
276 return regd;
277 }
278
279 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
280 {
281 bool changed;
282 struct ieee80211_regdomain *regd;
283
284 if (!iwl_mvm_is_lar_supported(mvm))
285 return;
286
287 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
288 if (!IS_ERR_OR_NULL(regd)) {
289 /* only update the regulatory core if changed */
290 if (changed)
291 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
292
293 kfree(regd);
294 }
295 }
296
297 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
298 bool *changed)
299 {
300 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
301 iwl_mvm_is_wifi_mcc_supported(mvm) ?
302 MCC_SOURCE_GET_CURRENT :
303 MCC_SOURCE_OLD_FW, changed);
304 }
305
306 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
307 {
308 enum iwl_mcc_source used_src;
309 struct ieee80211_regdomain *regd;
310 int ret;
311 bool changed;
312 const struct ieee80211_regdomain *r =
313 rtnl_dereference(mvm->hw->wiphy->regd);
314
315 if (!r)
316 return -ENOENT;
317
318 /* save the last source in case we overwrite it below */
319 used_src = mvm->mcc_src;
320 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
321 /* Notify the firmware we support wifi location updates */
322 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
323 if (!IS_ERR_OR_NULL(regd))
324 kfree(regd);
325 }
326
327 /* Now set our last stored MCC and source */
328 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
329 &changed);
330 if (IS_ERR_OR_NULL(regd))
331 return -EIO;
332
333 /* update cfg80211 if the regdomain was changed */
334 if (changed)
335 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
336 else
337 ret = 0;
338
339 kfree(regd);
340 return ret;
341 }
342
343 static const u8 he_if_types_ext_capa_sta[] = {
344 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING,
345 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT,
346 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF,
347 [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT,
348 };
349
350 static const struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = {
351 {
352 .iftype = NL80211_IFTYPE_STATION,
353 .extended_capabilities = he_if_types_ext_capa_sta,
354 .extended_capabilities_mask = he_if_types_ext_capa_sta,
355 .extended_capabilities_len = sizeof(he_if_types_ext_capa_sta),
356 },
357 };
358
359 static int
360 iwl_mvm_op_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
361 {
362 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
363 *tx_ant = iwl_mvm_get_valid_tx_ant(mvm);
364 *rx_ant = iwl_mvm_get_valid_rx_ant(mvm);
365 return 0;
366 }
367
368 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
369 {
370 struct ieee80211_hw *hw = mvm->hw;
371 int num_mac, ret, i;
372 static const u32 mvm_ciphers[] = {
373 WLAN_CIPHER_SUITE_WEP40,
374 WLAN_CIPHER_SUITE_WEP104,
375 WLAN_CIPHER_SUITE_TKIP,
376 WLAN_CIPHER_SUITE_CCMP,
377 };
378 #ifdef CONFIG_PM_SLEEP
379 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
380 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
381 #endif
382
383 /* Tell mac80211 our characteristics */
384 ieee80211_hw_set(hw, SIGNAL_DBM);
385 ieee80211_hw_set(hw, SPECTRUM_MGMT);
386 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
387 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
388 ieee80211_hw_set(hw, SUPPORTS_PS);
389 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
390 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
391 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
392 ieee80211_hw_set(hw, CONNECTION_MONITOR);
393 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
394 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
395 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
396 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
397 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
398 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP);
399 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
400 ieee80211_hw_set(hw, BUFF_MMPDU_TXQ);
401 ieee80211_hw_set(hw, STA_MMPDU_TXQ);
402 /*
403 * On older devices, enabling TX A-MSDU occasionally leads to
404 * something getting messed up, the command read from the FIFO
405 * gets out of sync and isn't a TX command, so that we have an
406 * assert EDC.
407 *
408 * It's not clear where the bug is, but since we didn't used to
409 * support A-MSDU until moving the mac80211 iTXQs, just leave it
410 * for older devices. We also don't see this issue on any newer
411 * devices.
412 */
413 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000)
414 ieee80211_hw_set(hw, TX_AMSDU);
415 ieee80211_hw_set(hw, TX_FRAG_LIST);
416
417 if (iwl_mvm_has_tlc_offload(mvm)) {
418 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
419 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
420 }
421
422 if (iwl_mvm_has_new_rx_api(mvm))
423 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
424
425 if (fw_has_capa(&mvm->fw->ucode_capa,
426 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) {
427 ieee80211_hw_set(hw, AP_LINK_PS);
428 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) {
429 /*
430 * we absolutely need this for the new TX API since that comes
431 * with many more queues than the current code can deal with
432 * for station powersave
433 */
434 return -EINVAL;
435 }
436
437 if (mvm->trans->num_rx_queues > 1)
438 ieee80211_hw_set(hw, USES_RSS);
439
440 if (mvm->trans->max_skb_frags)
441 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
442
443 hw->queues = IEEE80211_MAX_QUEUES;
444 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
445 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
446 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
447 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
448 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
449
450 hw->radiotap_timestamp.units_pos =
451 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
452 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
453 /* this is the case for CCK frames, it's better (only 8) for OFDM */
454 hw->radiotap_timestamp.accuracy = 22;
455
456 if (!iwl_mvm_has_tlc_offload(mvm))
457 hw->rate_control_algorithm = RS_NAME;
458
459 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
460 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
461 hw->max_tx_fragments = mvm->trans->max_skb_frags;
462
463 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
464 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
465 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
466 hw->wiphy->cipher_suites = mvm->ciphers;
467
468 if (iwl_mvm_has_new_rx_api(mvm)) {
469 mvm->ciphers[hw->wiphy->n_cipher_suites] =
470 WLAN_CIPHER_SUITE_GCMP;
471 hw->wiphy->n_cipher_suites++;
472 mvm->ciphers[hw->wiphy->n_cipher_suites] =
473 WLAN_CIPHER_SUITE_GCMP_256;
474 hw->wiphy->n_cipher_suites++;
475 }
476
477 /* Enable 11w if software crypto is not enabled (as the
478 * firmware will interpret some mgmt packets, so enabling it
479 * with software crypto isn't safe).
480 */
481 if (!iwlwifi_mod_params.swcrypto) {
482 ieee80211_hw_set(hw, MFP_CAPABLE);
483 mvm->ciphers[hw->wiphy->n_cipher_suites] =
484 WLAN_CIPHER_SUITE_AES_CMAC;
485 hw->wiphy->n_cipher_suites++;
486 if (iwl_mvm_has_new_rx_api(mvm)) {
487 mvm->ciphers[hw->wiphy->n_cipher_suites] =
488 WLAN_CIPHER_SUITE_BIP_GMAC_128;
489 hw->wiphy->n_cipher_suites++;
490 mvm->ciphers[hw->wiphy->n_cipher_suites] =
491 WLAN_CIPHER_SUITE_BIP_GMAC_256;
492 hw->wiphy->n_cipher_suites++;
493 }
494 }
495
496 /* currently FW API supports only one optional cipher scheme */
497 if (mvm->fw->cs[0].cipher) {
498 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
499 struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
500
501 mvm->hw->n_cipher_schemes = 1;
502
503 cs->cipher = le32_to_cpu(fwcs->cipher);
504 cs->iftype = BIT(NL80211_IFTYPE_STATION);
505 cs->hdr_len = fwcs->hdr_len;
506 cs->pn_len = fwcs->pn_len;
507 cs->pn_off = fwcs->pn_off;
508 cs->key_idx_off = fwcs->key_idx_off;
509 cs->key_idx_mask = fwcs->key_idx_mask;
510 cs->key_idx_shift = fwcs->key_idx_shift;
511 cs->mic_len = fwcs->mic_len;
512
513 mvm->hw->cipher_schemes = mvm->cs;
514 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
515 hw->wiphy->n_cipher_suites++;
516 }
517
518 if (fw_has_capa(&mvm->fw->ucode_capa,
519 IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) {
520 wiphy_ext_feature_set(hw->wiphy,
521 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER);
522 hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa;
523 }
524
525 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
526 hw->wiphy->features |=
527 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
528 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
529 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
530
531 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
532 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
533 hw->chanctx_data_size = sizeof(u16);
534 hw->txq_data_size = sizeof(struct iwl_mvm_txq);
535
536 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
537 BIT(NL80211_IFTYPE_P2P_CLIENT) |
538 BIT(NL80211_IFTYPE_AP) |
539 BIT(NL80211_IFTYPE_P2P_GO) |
540 BIT(NL80211_IFTYPE_P2P_DEVICE) |
541 BIT(NL80211_IFTYPE_ADHOC);
542
543 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
544 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
545 hw->wiphy->features |= NL80211_FEATURE_HT_IBSS;
546
547 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
548 if (iwl_mvm_is_lar_supported(mvm))
549 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
550 else
551 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
552 REGULATORY_DISABLE_BEACON_HINTS;
553
554 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
555 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
556
557 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
558 hw->wiphy->n_iface_combinations =
559 ARRAY_SIZE(iwl_mvm_iface_combinations);
560
561 hw->wiphy->max_remain_on_channel_duration = 10000;
562 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
563
564 /* Extract MAC address */
565 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
566 hw->wiphy->addresses = mvm->addresses;
567 hw->wiphy->n_addresses = 1;
568
569 /* Extract additional MAC addresses if available */
570 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
571 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
572
573 for (i = 1; i < num_mac; i++) {
574 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
575 ETH_ALEN);
576 mvm->addresses[i].addr[5]++;
577 hw->wiphy->n_addresses++;
578 }
579
580 iwl_mvm_reset_phy_ctxts(mvm);
581
582 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
583
584 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
585
586 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
587 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
588 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
589
590 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
591 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
592 else
593 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
594
595 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
596 hw->wiphy->bands[NL80211_BAND_2GHZ] =
597 &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
598 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
599 hw->wiphy->bands[NL80211_BAND_5GHZ] =
600 &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
601
602 if (fw_has_capa(&mvm->fw->ucode_capa,
603 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
604 fw_has_api(&mvm->fw->ucode_capa,
605 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
606 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
607 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
608 }
609
610 hw->wiphy->hw_version = mvm->trans->hw_id;
611
612 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
613 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
614 else
615 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
616
617 hw->wiphy->max_sched_scan_reqs = 1;
618 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
619 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
620 /* we create the 802.11 header and zero length SSID IE. */
621 hw->wiphy->max_sched_scan_ie_len =
622 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
623 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
624 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
625
626 /*
627 * the firmware uses u8 for num of iterations, but 0xff is saved for
628 * infinite loop, so the maximum number of iterations is actually 254.
629 */
630 hw->wiphy->max_sched_scan_plan_iterations = 254;
631
632 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
633 NL80211_FEATURE_LOW_PRIORITY_SCAN |
634 NL80211_FEATURE_P2P_GO_OPPPS |
635 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
636 NL80211_FEATURE_DYNAMIC_SMPS |
637 NL80211_FEATURE_STATIC_SMPS |
638 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
639
640 if (fw_has_capa(&mvm->fw->ucode_capa,
641 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
642 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
643 if (fw_has_capa(&mvm->fw->ucode_capa,
644 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
645 hw->wiphy->features |= NL80211_FEATURE_QUIET;
646
647 if (fw_has_capa(&mvm->fw->ucode_capa,
648 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
649 hw->wiphy->features |=
650 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
651
652 if (fw_has_capa(&mvm->fw->ucode_capa,
653 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
654 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
655
656 if (fw_has_api(&mvm->fw->ucode_capa,
657 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
658 wiphy_ext_feature_set(hw->wiphy,
659 NL80211_EXT_FEATURE_SCAN_START_TIME);
660 wiphy_ext_feature_set(hw->wiphy,
661 NL80211_EXT_FEATURE_BSS_PARENT_TSF);
662 wiphy_ext_feature_set(hw->wiphy,
663 NL80211_EXT_FEATURE_SET_SCAN_DWELL);
664 }
665
666 if (iwl_mvm_is_oce_supported(mvm)) {
667 wiphy_ext_feature_set(hw->wiphy,
668 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP);
669 wiphy_ext_feature_set(hw->wiphy,
670 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME);
671 wiphy_ext_feature_set(hw->wiphy,
672 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION);
673 wiphy_ext_feature_set(hw->wiphy,
674 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE);
675 }
676
677 if (mvm->nvm_data->sku_cap_11ax_enable &&
678 !iwlwifi_mod_params.disable_11ax) {
679 hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa;
680 hw->wiphy->num_iftype_ext_capab =
681 ARRAY_SIZE(he_iftypes_ext_capa);
682
683 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
684 ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID);
685 }
686
687 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
688
689 #ifdef CONFIG_PM_SLEEP
690 if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) &&
691 mvm->trans->ops->d3_suspend &&
692 mvm->trans->ops->d3_resume &&
693 device_can_wakeup(mvm->trans->dev)) {
694 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
695 WIPHY_WOWLAN_DISCONNECT |
696 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
697 WIPHY_WOWLAN_RFKILL_RELEASE |
698 WIPHY_WOWLAN_NET_DETECT;
699 if (!iwlwifi_mod_params.swcrypto)
700 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
701 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
702 WIPHY_WOWLAN_4WAY_HANDSHAKE;
703
704 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
705 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
706 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
707 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
708 hw->wiphy->wowlan = &mvm->wowlan;
709 }
710 #endif
711
712 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
713 /* assign default bcast filtering configuration */
714 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
715 #endif
716
717 ret = iwl_mvm_leds_init(mvm);
718 if (ret)
719 return ret;
720
721 if (fw_has_capa(&mvm->fw->ucode_capa,
722 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
723 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
724 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
725 ieee80211_hw_set(hw, TDLS_WIDER_BW);
726 }
727
728 if (fw_has_capa(&mvm->fw->ucode_capa,
729 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
730 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
731 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
732 }
733
734 hw->netdev_features |= mvm->cfg->features;
735 if (!iwl_mvm_is_csum_supported(mvm)) {
736 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
737 NETIF_F_RXCSUM);
738 /* We may support SW TX CSUM */
739 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
740 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
741 }
742
743 if (mvm->cfg->vht_mu_mimo_supported)
744 wiphy_ext_feature_set(hw->wiphy,
745 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
746
747 hw->wiphy->available_antennas_tx = iwl_mvm_get_valid_tx_ant(mvm);
748 hw->wiphy->available_antennas_rx = iwl_mvm_get_valid_rx_ant(mvm);
749
750 ret = ieee80211_register_hw(mvm->hw);
751 if (ret) {
752 iwl_mvm_leds_exit(mvm);
753 }
754
755 return ret;
756 }
757
758 static void iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
759 struct ieee80211_sta *sta)
760 {
761 if (likely(sta)) {
762 if (likely(iwl_mvm_tx_skb_sta(mvm, skb, sta) == 0))
763 return;
764 } else {
765 if (likely(iwl_mvm_tx_skb_non_sta(mvm, skb) == 0))
766 return;
767 }
768
769 ieee80211_free_txskb(mvm->hw, skb);
770 }
771
772 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
773 struct ieee80211_tx_control *control,
774 struct sk_buff *skb)
775 {
776 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
777 struct ieee80211_sta *sta = control->sta;
778 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
779 struct ieee80211_hdr *hdr = (void *)skb->data;
780 bool offchannel = IEEE80211_SKB_CB(skb)->flags &
781 IEEE80211_TX_CTL_TX_OFFCHAN;
782
783 if (iwl_mvm_is_radio_killed(mvm)) {
784 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
785 goto drop;
786 }
787
788 if (offchannel &&
789 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
790 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
791 goto drop;
792
793 /* treat non-bufferable MMPDUs on AP interfaces as broadcast */
794 if ((info->control.vif->type == NL80211_IFTYPE_AP ||
795 info->control.vif->type == NL80211_IFTYPE_ADHOC) &&
796 ieee80211_is_mgmt(hdr->frame_control) &&
797 !ieee80211_is_bufferable_mmpdu(hdr->frame_control))
798 sta = NULL;
799
800 /* If there is no sta, and it's not offchannel - send through AP */
801 if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION &&
802 !offchannel) {
803 struct iwl_mvm_vif *mvmvif =
804 iwl_mvm_vif_from_mac80211(info->control.vif);
805 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id);
806
807 if (ap_sta_id < IWL_MVM_STATION_COUNT) {
808 /* mac80211 holds rcu read lock */
809 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]);
810 if (IS_ERR_OR_NULL(sta))
811 goto drop;
812 }
813 }
814
815 iwl_mvm_tx_skb(mvm, skb, sta);
816 return;
817 drop:
818 ieee80211_free_txskb(hw, skb);
819 }
820
821 void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq)
822 {
823 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
824 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
825 struct sk_buff *skb = NULL;
826
827 /*
828 * No need for threads to be pending here, they can leave the first
829 * taker all the work.
830 *
831 * mvmtxq->tx_request logic:
832 *
833 * If 0, no one is currently TXing, set to 1 to indicate current thread
834 * will now start TX and other threads should quit.
835 *
836 * If 1, another thread is currently TXing, set to 2 to indicate to
837 * that thread that there was another request. Since that request may
838 * have raced with the check whether the queue is empty, the TXing
839 * thread should check the queue's status one more time before leaving.
840 * This check is done in order to not leave any TX hanging in the queue
841 * until the next TX invocation (which may not even happen).
842 *
843 * If 2, another thread is currently TXing, and it will already double
844 * check the queue, so do nothing.
845 */
846 if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2))
847 return;
848
849 rcu_read_lock();
850 do {
851 while (likely(!mvmtxq->stopped &&
852 (mvm->trans->system_pm_mode ==
853 IWL_PLAT_PM_MODE_DISABLED))) {
854 skb = ieee80211_tx_dequeue(hw, txq);
855
856 if (!skb) {
857 if (txq->sta)
858 IWL_DEBUG_TX(mvm,
859 "TXQ of sta %pM tid %d is now empty\n",
860 txq->sta->addr,
861 txq->tid);
862 break;
863 }
864
865 iwl_mvm_tx_skb(mvm, skb, txq->sta);
866 }
867 } while (atomic_dec_return(&mvmtxq->tx_request));
868 rcu_read_unlock();
869 }
870
871 static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw,
872 struct ieee80211_txq *txq)
873 {
874 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
875 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
876
877 /*
878 * Please note that racing is handled very carefully here:
879 * mvmtxq->txq_id is updated during allocation, and mvmtxq->list is
880 * deleted afterwards.
881 * This means that if:
882 * mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list):
883 * queue is allocated and we can TX.
884 * mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list):
885 * a race, should defer the frame.
886 * mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list):
887 * need to allocate the queue and defer the frame.
888 * mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list):
889 * queue is already scheduled for allocation, no need to allocate,
890 * should defer the frame.
891 */
892
893 /* If the queue is allocated TX and return. */
894 if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) {
895 /*
896 * Check that list is empty to avoid a race where txq_id is
897 * already updated, but the queue allocation work wasn't
898 * finished
899 */
900 if (unlikely(txq->sta && !list_empty(&mvmtxq->list)))
901 return;
902
903 iwl_mvm_mac_itxq_xmit(hw, txq);
904 return;
905 }
906
907 /* The list is being deleted only after the queue is fully allocated. */
908 if (!list_empty(&mvmtxq->list))
909 return;
910
911 list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs);
912 schedule_work(&mvm->add_stream_wk);
913 }
914
915 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
916 do { \
917 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
918 break; \
919 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \
920 } while (0)
921
922 static void
923 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
924 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
925 enum ieee80211_ampdu_mlme_action action)
926 {
927 struct iwl_fw_dbg_trigger_tlv *trig;
928 struct iwl_fw_dbg_trigger_ba *ba_trig;
929
930 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
931 FW_DBG_TRIGGER_BA);
932 if (!trig)
933 return;
934
935 ba_trig = (void *)trig->data;
936
937 switch (action) {
938 case IEEE80211_AMPDU_TX_OPERATIONAL: {
939 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
940 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
941
942 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
943 "TX AGG START: MAC %pM tid %d ssn %d\n",
944 sta->addr, tid, tid_data->ssn);
945 break;
946 }
947 case IEEE80211_AMPDU_TX_STOP_CONT:
948 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
949 "TX AGG STOP: MAC %pM tid %d\n",
950 sta->addr, tid);
951 break;
952 case IEEE80211_AMPDU_RX_START:
953 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
954 "RX AGG START: MAC %pM tid %d ssn %d\n",
955 sta->addr, tid, rx_ba_ssn);
956 break;
957 case IEEE80211_AMPDU_RX_STOP:
958 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
959 "RX AGG STOP: MAC %pM tid %d\n",
960 sta->addr, tid);
961 break;
962 default:
963 break;
964 }
965 }
966
967 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
968 struct ieee80211_vif *vif,
969 struct ieee80211_ampdu_params *params)
970 {
971 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
972 int ret;
973 struct ieee80211_sta *sta = params->sta;
974 enum ieee80211_ampdu_mlme_action action = params->action;
975 u16 tid = params->tid;
976 u16 *ssn = &params->ssn;
977 u16 buf_size = params->buf_size;
978 bool amsdu = params->amsdu;
979 u16 timeout = params->timeout;
980
981 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
982 sta->addr, tid, action);
983
984 if (!(mvm->nvm_data->sku_cap_11n_enable))
985 return -EACCES;
986
987 mutex_lock(&mvm->mutex);
988
989 switch (action) {
990 case IEEE80211_AMPDU_RX_START:
991 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id ==
992 iwl_mvm_sta_from_mac80211(sta)->sta_id) {
993 struct iwl_mvm_vif *mvmvif;
994 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id;
995 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid];
996
997 mdata->opened_rx_ba_sessions = true;
998 mvmvif = iwl_mvm_vif_from_mac80211(vif);
999 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk);
1000 }
1001 if (!iwl_enable_rx_ampdu()) {
1002 ret = -EINVAL;
1003 break;
1004 }
1005 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
1006 timeout);
1007 break;
1008 case IEEE80211_AMPDU_RX_STOP:
1009 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
1010 timeout);
1011 break;
1012 case IEEE80211_AMPDU_TX_START:
1013 if (!iwl_enable_tx_ampdu()) {
1014 ret = -EINVAL;
1015 break;
1016 }
1017 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
1018 break;
1019 case IEEE80211_AMPDU_TX_STOP_CONT:
1020 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
1021 break;
1022 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1023 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1024 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
1025 break;
1026 case IEEE80211_AMPDU_TX_OPERATIONAL:
1027 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
1028 buf_size, amsdu);
1029 break;
1030 default:
1031 WARN_ON_ONCE(1);
1032 ret = -EINVAL;
1033 break;
1034 }
1035
1036 if (!ret) {
1037 u16 rx_ba_ssn = 0;
1038
1039 if (action == IEEE80211_AMPDU_RX_START)
1040 rx_ba_ssn = *ssn;
1041
1042 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
1043 rx_ba_ssn, action);
1044 }
1045 mutex_unlock(&mvm->mutex);
1046
1047 return ret;
1048 }
1049
1050 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1051 struct ieee80211_vif *vif)
1052 {
1053 struct iwl_mvm *mvm = data;
1054 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1055
1056 mvmvif->uploaded = false;
1057 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1058
1059 spin_lock_bh(&mvm->time_event_lock);
1060 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1061 spin_unlock_bh(&mvm->time_event_lock);
1062
1063 mvmvif->phy_ctxt = NULL;
1064 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1065 memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data));
1066 }
1067
1068 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1069 {
1070 iwl_mvm_stop_device(mvm);
1071
1072 mvm->cur_aid = 0;
1073
1074 mvm->scan_status = 0;
1075 mvm->ps_disabled = false;
1076 mvm->rfkill_safe_init_done = false;
1077
1078 /* just in case one was running */
1079 iwl_mvm_cleanup_roc_te(mvm);
1080 ieee80211_remain_on_channel_expired(mvm->hw);
1081
1082 iwl_mvm_ftm_restart(mvm);
1083
1084 /*
1085 * cleanup all interfaces, even inactive ones, as some might have
1086 * gone down during the HW restart
1087 */
1088 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1089
1090 mvm->p2p_device_vif = NULL;
1091
1092 iwl_mvm_reset_phy_ctxts(mvm);
1093 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1094 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1095 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1096
1097 ieee80211_wake_queues(mvm->hw);
1098
1099 mvm->vif_count = 0;
1100 mvm->rx_ba_sessions = 0;
1101 mvm->fwrt.dump.conf = FW_DBG_INVALID;
1102 mvm->monitor_on = false;
1103
1104 /* keep statistics ticking */
1105 iwl_mvm_accu_radio_stats(mvm);
1106 }
1107
1108 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1109 {
1110 int ret;
1111
1112 lockdep_assert_held(&mvm->mutex);
1113
1114 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
1115 /*
1116 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
1117 * so later code will - from now on - see that we're doing it.
1118 */
1119 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1120 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1121 /* Clean up some internal and mac80211 state on restart */
1122 iwl_mvm_restart_cleanup(mvm);
1123 }
1124 ret = iwl_mvm_up(mvm);
1125
1126 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT,
1127 NULL);
1128 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC,
1129 NULL);
1130
1131 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1132 /* Something went wrong - we need to finish some cleanup
1133 * that normally iwl_mvm_mac_restart_complete() below
1134 * would do.
1135 */
1136 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1137 }
1138
1139 return ret;
1140 }
1141
1142 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1143 {
1144 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1145 int ret;
1146
1147 mutex_lock(&mvm->mutex);
1148 ret = __iwl_mvm_mac_start(mvm);
1149 mutex_unlock(&mvm->mutex);
1150
1151 return ret;
1152 }
1153
1154 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1155 {
1156 int ret;
1157
1158 mutex_lock(&mvm->mutex);
1159
1160 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1161
1162 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1163 if (ret)
1164 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1165 ret);
1166
1167 iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY);
1168
1169 /*
1170 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1171 * of packets the FW sent out, so we must reconnect.
1172 */
1173 iwl_mvm_teardown_tdls_peers(mvm);
1174
1175 mutex_unlock(&mvm->mutex);
1176 }
1177
1178 static void
1179 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1180 enum ieee80211_reconfig_type reconfig_type)
1181 {
1182 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1183
1184 switch (reconfig_type) {
1185 case IEEE80211_RECONFIG_TYPE_RESTART:
1186 iwl_mvm_restart_complete(mvm);
1187 break;
1188 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1189 break;
1190 }
1191 }
1192
1193 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1194 {
1195 lockdep_assert_held(&mvm->mutex);
1196
1197 /* firmware counters are obviously reset now, but we shouldn't
1198 * partially track so also clear the fw_reset_accu counters.
1199 */
1200 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1201
1202 /* async_handlers_wk is now blocked */
1203
1204 /*
1205 * The work item could be running or queued if the
1206 * ROC time event stops just as we get here.
1207 */
1208 flush_work(&mvm->roc_done_wk);
1209
1210 iwl_mvm_stop_device(mvm);
1211
1212 iwl_mvm_async_handlers_purge(mvm);
1213 /* async_handlers_list is empty and will stay empty: HW is stopped */
1214
1215 /* the fw is stopped, the aux sta is dead: clean up driver state */
1216 iwl_mvm_del_aux_sta(mvm);
1217
1218 /*
1219 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the
1220 * hw (as restart_complete() won't be called in this case) and mac80211
1221 * won't execute the restart.
1222 * But make sure to cleanup interfaces that have gone down before/during
1223 * HW restart was requested.
1224 */
1225 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
1226 test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
1227 &mvm->status))
1228 ieee80211_iterate_interfaces(mvm->hw, 0,
1229 iwl_mvm_cleanup_iterator, mvm);
1230
1231 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1232 * make sure there's nothing left there and warn if any is found.
1233 */
1234 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1235 int i;
1236
1237 for (i = 0; i < mvm->max_scans; i++) {
1238 if (WARN_ONCE(mvm->scan_uid_status[i],
1239 "UMAC scan UID %d status was not cleaned\n",
1240 i))
1241 mvm->scan_uid_status[i] = 0;
1242 }
1243 }
1244 }
1245
1246 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1247 {
1248 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1249
1250 flush_work(&mvm->async_handlers_wk);
1251 flush_work(&mvm->add_stream_wk);
1252
1253 /*
1254 * Lock and clear the firmware running bit here already, so that
1255 * new commands coming in elsewhere, e.g. from debugfs, will not
1256 * be able to proceed. This is important here because one of those
1257 * debugfs files causes the firmware dump to be triggered, and if we
1258 * don't stop debugfs accesses before canceling that it could be
1259 * retriggered after we flush it but before we've cleared the bit.
1260 */
1261 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1262
1263 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1264 cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1265 iwl_fw_free_dump_desc(&mvm->fwrt);
1266
1267 mutex_lock(&mvm->mutex);
1268 __iwl_mvm_mac_stop(mvm);
1269 mutex_unlock(&mvm->mutex);
1270
1271 /*
1272 * The worker might have been waiting for the mutex, let it run and
1273 * discover that its list is now empty.
1274 */
1275 cancel_work_sync(&mvm->async_handlers_wk);
1276 }
1277
1278 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1279 {
1280 u16 i;
1281
1282 lockdep_assert_held(&mvm->mutex);
1283
1284 for (i = 0; i < NUM_PHY_CTX; i++)
1285 if (!mvm->phy_ctxts[i].ref)
1286 return &mvm->phy_ctxts[i];
1287
1288 IWL_ERR(mvm, "No available PHY context\n");
1289 return NULL;
1290 }
1291
1292 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1293 s16 tx_power)
1294 {
1295 int len;
1296 union {
1297 struct iwl_dev_tx_power_cmd v5;
1298 struct iwl_dev_tx_power_cmd_v4 v4;
1299 } cmd = {
1300 .v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1301 .v5.v3.mac_context_id =
1302 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1303 .v5.v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1304 };
1305
1306 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1307 cmd.v5.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1308
1309 if (fw_has_api(&mvm->fw->ucode_capa,
1310 IWL_UCODE_TLV_API_REDUCE_TX_POWER))
1311 len = sizeof(cmd.v5);
1312 else if (fw_has_capa(&mvm->fw->ucode_capa,
1313 IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1314 len = sizeof(cmd.v4);
1315 else
1316 len = sizeof(cmd.v4.v3);
1317
1318 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1319 }
1320
1321 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
1322 struct ieee80211_vif *vif)
1323 {
1324 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1325 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1326 int ret;
1327
1328 mutex_lock(&mvm->mutex);
1329
1330 if (mvmvif->csa_failed) {
1331 mvmvif->csa_failed = false;
1332 ret = -EIO;
1333 goto out_unlock;
1334 }
1335
1336 if (vif->type == NL80211_IFTYPE_STATION) {
1337 struct iwl_mvm_sta *mvmsta;
1338
1339 mvmvif->csa_bcn_pending = false;
1340 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
1341 mvmvif->ap_sta_id);
1342
1343 if (WARN_ON(!mvmsta)) {
1344 ret = -EIO;
1345 goto out_unlock;
1346 }
1347
1348 if (!fw_has_capa(&mvm->fw->ucode_capa,
1349 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
1350 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
1351
1352 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1353
1354 if (!fw_has_capa(&mvm->fw->ucode_capa,
1355 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
1356 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1357 if (ret)
1358 goto out_unlock;
1359
1360 iwl_mvm_stop_session_protection(mvm, vif);
1361 }
1362 }
1363
1364 mvmvif->ps_disabled = false;
1365
1366 ret = iwl_mvm_power_update_ps(mvm);
1367
1368 out_unlock:
1369 mutex_unlock(&mvm->mutex);
1370
1371 return ret;
1372 }
1373
1374 static void iwl_mvm_abort_channel_switch(struct ieee80211_hw *hw,
1375 struct ieee80211_vif *vif)
1376 {
1377 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1378 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1379 struct iwl_chan_switch_te_cmd cmd = {
1380 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1381 mvmvif->color)),
1382 .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE),
1383 };
1384
1385 IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id);
1386
1387 mutex_lock(&mvm->mutex);
1388 WARN_ON(iwl_mvm_send_cmd_pdu(mvm,
1389 WIDE_ID(MAC_CONF_GROUP,
1390 CHANNEL_SWITCH_TIME_EVENT_CMD),
1391 0, sizeof(cmd), &cmd));
1392 mutex_unlock(&mvm->mutex);
1393
1394 WARN_ON(iwl_mvm_post_channel_switch(hw, vif));
1395 }
1396
1397 static void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk)
1398 {
1399 struct iwl_mvm *mvm;
1400 struct iwl_mvm_vif *mvmvif;
1401 struct ieee80211_vif *vif;
1402
1403 mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work);
1404 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);
1405 mvm = mvmvif->mvm;
1406
1407 iwl_mvm_abort_channel_switch(mvm->hw, vif);
1408 ieee80211_chswitch_done(vif, false);
1409 }
1410
1411 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1412 struct ieee80211_vif *vif)
1413 {
1414 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1415 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1416 int ret;
1417
1418 mvmvif->mvm = mvm;
1419 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1420
1421 /*
1422 * Not much to do here. The stack will not allow interface
1423 * types or combinations that we didn't advertise, so we
1424 * don't really have to check the types.
1425 */
1426
1427 mutex_lock(&mvm->mutex);
1428
1429 /* make sure that beacon statistics don't go backwards with FW reset */
1430 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1431 mvmvif->beacon_stats.accu_num_beacons +=
1432 mvmvif->beacon_stats.num_beacons;
1433
1434 /* Allocate resources for the MAC context, and add it to the fw */
1435 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1436 if (ret)
1437 goto out_unlock;
1438
1439 rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif);
1440
1441 /* Counting number of interfaces is needed for legacy PM */
1442 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1443 mvm->vif_count++;
1444
1445 /*
1446 * The AP binding flow can be done only after the beacon
1447 * template is configured (which happens only in the mac80211
1448 * start_ap() flow), and adding the broadcast station can happen
1449 * only after the binding.
1450 * In addition, since modifying the MAC before adding a bcast
1451 * station is not allowed by the FW, delay the adding of MAC context to
1452 * the point where we can also add the bcast station.
1453 * In short: there's not much we can do at this point, other than
1454 * allocating resources :)
1455 */
1456 if (vif->type == NL80211_IFTYPE_AP ||
1457 vif->type == NL80211_IFTYPE_ADHOC) {
1458 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1459 if (ret) {
1460 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1461 goto out_release;
1462 }
1463
1464 /*
1465 * Only queue for this station is the mcast queue,
1466 * which shouldn't be in TFD mask anyway
1467 */
1468 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1469 0, vif->type,
1470 IWL_STA_MULTICAST);
1471 if (ret)
1472 goto out_release;
1473
1474 iwl_mvm_vif_dbgfs_register(mvm, vif);
1475 goto out_unlock;
1476 }
1477
1478 mvmvif->features |= hw->netdev_features;
1479
1480 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1481 if (ret)
1482 goto out_release;
1483
1484 ret = iwl_mvm_power_update_mac(mvm);
1485 if (ret)
1486 goto out_remove_mac;
1487
1488 /* beacon filtering */
1489 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1490 if (ret)
1491 goto out_remove_mac;
1492
1493 if (!mvm->bf_allowed_vif &&
1494 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1495 mvm->bf_allowed_vif = mvmvif;
1496 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1497 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1498 }
1499
1500 /*
1501 * P2P_DEVICE interface does not have a channel context assigned to it,
1502 * so a dedicated PHY context is allocated to it and the corresponding
1503 * MAC context is bound to it at this stage.
1504 */
1505 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1506
1507 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1508 if (!mvmvif->phy_ctxt) {
1509 ret = -ENOSPC;
1510 goto out_free_bf;
1511 }
1512
1513 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1514 ret = iwl_mvm_binding_add_vif(mvm, vif);
1515 if (ret)
1516 goto out_unref_phy;
1517
1518 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif);
1519 if (ret)
1520 goto out_unbind;
1521
1522 /* Save a pointer to p2p device vif, so it can later be used to
1523 * update the p2p device MAC when a GO is started/stopped */
1524 mvm->p2p_device_vif = vif;
1525 }
1526
1527 iwl_mvm_tcm_add_vif(mvm, vif);
1528 INIT_DELAYED_WORK(&mvmvif->csa_work,
1529 iwl_mvm_channel_switch_disconnect_wk);
1530
1531 if (vif->type == NL80211_IFTYPE_MONITOR)
1532 mvm->monitor_on = true;
1533
1534 iwl_mvm_vif_dbgfs_register(mvm, vif);
1535 goto out_unlock;
1536
1537 out_unbind:
1538 iwl_mvm_binding_remove_vif(mvm, vif);
1539 out_unref_phy:
1540 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1541 out_free_bf:
1542 if (mvm->bf_allowed_vif == mvmvif) {
1543 mvm->bf_allowed_vif = NULL;
1544 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1545 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1546 }
1547 out_remove_mac:
1548 mvmvif->phy_ctxt = NULL;
1549 iwl_mvm_mac_ctxt_remove(mvm, vif);
1550 out_release:
1551 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1552 mvm->vif_count--;
1553 out_unlock:
1554 mutex_unlock(&mvm->mutex);
1555
1556 return ret;
1557 }
1558
1559 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1560 struct ieee80211_vif *vif)
1561 {
1562 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1563 /*
1564 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1565 * We assume here that all the packets sent to the OFFCHANNEL
1566 * queue are sent in ROC session.
1567 */
1568 flush_work(&mvm->roc_done_wk);
1569 }
1570 }
1571
1572 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1573 struct ieee80211_vif *vif)
1574 {
1575 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1576 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1577 struct iwl_probe_resp_data *probe_data;
1578
1579 iwl_mvm_prepare_mac_removal(mvm, vif);
1580
1581 if (!(vif->type == NL80211_IFTYPE_AP ||
1582 vif->type == NL80211_IFTYPE_ADHOC))
1583 iwl_mvm_tcm_rm_vif(mvm, vif);
1584
1585 mutex_lock(&mvm->mutex);
1586
1587 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data,
1588 lockdep_is_held(&mvm->mutex));
1589 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1590 if (probe_data)
1591 kfree_rcu(probe_data, rcu_head);
1592
1593 if (mvm->bf_allowed_vif == mvmvif) {
1594 mvm->bf_allowed_vif = NULL;
1595 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1596 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1597 }
1598
1599 if (vif->bss_conf.ftm_responder)
1600 memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats));
1601
1602 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1603
1604 /*
1605 * For AP/GO interface, the tear down of the resources allocated to the
1606 * interface is be handled as part of the stop_ap flow.
1607 */
1608 if (vif->type == NL80211_IFTYPE_AP ||
1609 vif->type == NL80211_IFTYPE_ADHOC) {
1610 #ifdef CONFIG_NL80211_TESTMODE
1611 if (vif == mvm->noa_vif) {
1612 mvm->noa_vif = NULL;
1613 mvm->noa_duration = 0;
1614 }
1615 #endif
1616 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1617 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1618 goto out_release;
1619 }
1620
1621 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1622 mvm->p2p_device_vif = NULL;
1623 iwl_mvm_rm_p2p_bcast_sta(mvm, vif);
1624 iwl_mvm_binding_remove_vif(mvm, vif);
1625 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1626 mvmvif->phy_ctxt = NULL;
1627 }
1628
1629 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1630 mvm->vif_count--;
1631
1632 iwl_mvm_power_update_mac(mvm);
1633 iwl_mvm_mac_ctxt_remove(mvm, vif);
1634
1635 RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL);
1636
1637 if (vif->type == NL80211_IFTYPE_MONITOR)
1638 mvm->monitor_on = false;
1639
1640 out_release:
1641 mutex_unlock(&mvm->mutex);
1642 }
1643
1644 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1645 {
1646 return 0;
1647 }
1648
1649 struct iwl_mvm_mc_iter_data {
1650 struct iwl_mvm *mvm;
1651 int port_id;
1652 };
1653
1654 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1655 struct ieee80211_vif *vif)
1656 {
1657 struct iwl_mvm_mc_iter_data *data = _data;
1658 struct iwl_mvm *mvm = data->mvm;
1659 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1660 struct iwl_host_cmd hcmd = {
1661 .id = MCAST_FILTER_CMD,
1662 .flags = CMD_ASYNC,
1663 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1664 };
1665 int ret, len;
1666
1667 /* if we don't have free ports, mcast frames will be dropped */
1668 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1669 return;
1670
1671 if (vif->type != NL80211_IFTYPE_STATION ||
1672 !vif->bss_conf.assoc)
1673 return;
1674
1675 cmd->port_id = data->port_id++;
1676 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1677 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1678
1679 hcmd.len[0] = len;
1680 hcmd.data[0] = cmd;
1681
1682 ret = iwl_mvm_send_cmd(mvm, &hcmd);
1683 if (ret)
1684 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1685 }
1686
1687 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1688 {
1689 struct iwl_mvm_mc_iter_data iter_data = {
1690 .mvm = mvm,
1691 };
1692
1693 lockdep_assert_held(&mvm->mutex);
1694
1695 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1696 return;
1697
1698 ieee80211_iterate_active_interfaces_atomic(
1699 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1700 iwl_mvm_mc_iface_iterator, &iter_data);
1701 }
1702
1703 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1704 struct netdev_hw_addr_list *mc_list)
1705 {
1706 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1707 struct iwl_mcast_filter_cmd *cmd;
1708 struct netdev_hw_addr *addr;
1709 int addr_count;
1710 bool pass_all;
1711 int len;
1712
1713 addr_count = netdev_hw_addr_list_count(mc_list);
1714 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1715 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1716 if (pass_all)
1717 addr_count = 0;
1718
1719 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1720 cmd = kzalloc(len, GFP_ATOMIC);
1721 if (!cmd)
1722 return 0;
1723
1724 if (pass_all) {
1725 cmd->pass_all = 1;
1726 return (u64)(unsigned long)cmd;
1727 }
1728
1729 netdev_hw_addr_list_for_each(addr, mc_list) {
1730 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1731 cmd->count, addr->addr);
1732 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1733 addr->addr, ETH_ALEN);
1734 cmd->count++;
1735 }
1736
1737 return (u64)(unsigned long)cmd;
1738 }
1739
1740 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1741 unsigned int changed_flags,
1742 unsigned int *total_flags,
1743 u64 multicast)
1744 {
1745 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1746 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1747
1748 mutex_lock(&mvm->mutex);
1749
1750 /* replace previous configuration */
1751 kfree(mvm->mcast_filter_cmd);
1752 mvm->mcast_filter_cmd = cmd;
1753
1754 if (!cmd)
1755 goto out;
1756
1757 if (changed_flags & FIF_ALLMULTI)
1758 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);
1759
1760 if (cmd->pass_all)
1761 cmd->count = 0;
1762
1763 iwl_mvm_recalc_multicast(mvm);
1764 out:
1765 mutex_unlock(&mvm->mutex);
1766 *total_flags = 0;
1767 }
1768
1769 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1770 struct ieee80211_vif *vif,
1771 unsigned int filter_flags,
1772 unsigned int changed_flags)
1773 {
1774 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1775
1776 /* We support only filter for probe requests */
1777 if (!(changed_flags & FIF_PROBE_REQ))
1778 return;
1779
1780 /* Supported only for p2p client interfaces */
1781 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1782 !vif->p2p)
1783 return;
1784
1785 mutex_lock(&mvm->mutex);
1786 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1787 mutex_unlock(&mvm->mutex);
1788 }
1789
1790 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1791 struct iwl_bcast_iter_data {
1792 struct iwl_mvm *mvm;
1793 struct iwl_bcast_filter_cmd *cmd;
1794 u8 current_filter;
1795 };
1796
1797 static void
1798 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1799 const struct iwl_fw_bcast_filter *in_filter,
1800 struct iwl_fw_bcast_filter *out_filter)
1801 {
1802 struct iwl_fw_bcast_filter_attr *attr;
1803 int i;
1804
1805 memcpy(out_filter, in_filter, sizeof(*out_filter));
1806
1807 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1808 attr = &out_filter->attrs[i];
1809
1810 if (!attr->mask)
1811 break;
1812
1813 switch (attr->reserved1) {
1814 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1815 if (vif->bss_conf.arp_addr_cnt != 1) {
1816 attr->mask = 0;
1817 continue;
1818 }
1819
1820 attr->val = vif->bss_conf.arp_addr_list[0];
1821 break;
1822 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1823 attr->val = *(__be32 *)&vif->addr[2];
1824 break;
1825 default:
1826 break;
1827 }
1828 attr->reserved1 = 0;
1829 out_filter->num_attrs++;
1830 }
1831 }
1832
1833 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1834 struct ieee80211_vif *vif)
1835 {
1836 struct iwl_bcast_iter_data *data = _data;
1837 struct iwl_mvm *mvm = data->mvm;
1838 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1839 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1840 struct iwl_fw_bcast_mac *bcast_mac;
1841 int i;
1842
1843 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1844 return;
1845
1846 bcast_mac = &cmd->macs[mvmvif->id];
1847
1848 /*
1849 * enable filtering only for associated stations, but not for P2P
1850 * Clients
1851 */
1852 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1853 !vif->bss_conf.assoc)
1854 return;
1855
1856 bcast_mac->default_discard = 1;
1857
1858 /* copy all configured filters */
1859 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1860 /*
1861 * Make sure we don't exceed our filters limit.
1862 * if there is still a valid filter to be configured,
1863 * be on the safe side and just allow bcast for this mac.
1864 */
1865 if (WARN_ON_ONCE(data->current_filter >=
1866 ARRAY_SIZE(cmd->filters))) {
1867 bcast_mac->default_discard = 0;
1868 bcast_mac->attached_filters = 0;
1869 break;
1870 }
1871
1872 iwl_mvm_set_bcast_filter(vif,
1873 &mvm->bcast_filters[i],
1874 &cmd->filters[data->current_filter]);
1875
1876 /* skip current filter if it contains no attributes */
1877 if (!cmd->filters[data->current_filter].num_attrs)
1878 continue;
1879
1880 /* attach the filter to current mac */
1881 bcast_mac->attached_filters |=
1882 cpu_to_le16(BIT(data->current_filter));
1883
1884 data->current_filter++;
1885 }
1886 }
1887
1888 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1889 struct iwl_bcast_filter_cmd *cmd)
1890 {
1891 struct iwl_bcast_iter_data iter_data = {
1892 .mvm = mvm,
1893 .cmd = cmd,
1894 };
1895
1896 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1897 return false;
1898
1899 memset(cmd, 0, sizeof(*cmd));
1900 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1901 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1902
1903 #ifdef CONFIG_IWLWIFI_DEBUGFS
1904 /* use debugfs filters/macs if override is configured */
1905 if (mvm->dbgfs_bcast_filtering.override) {
1906 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1907 sizeof(cmd->filters));
1908 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1909 sizeof(cmd->macs));
1910 return true;
1911 }
1912 #endif
1913
1914 /* if no filters are configured, do nothing */
1915 if (!mvm->bcast_filters)
1916 return false;
1917
1918 /* configure and attach these filters for each associated sta vif */
1919 ieee80211_iterate_active_interfaces(
1920 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1921 iwl_mvm_bcast_filter_iterator, &iter_data);
1922
1923 return true;
1924 }
1925
1926 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1927 {
1928 struct iwl_bcast_filter_cmd cmd;
1929
1930 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1931 return 0;
1932
1933 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1934 return 0;
1935
1936 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1937 sizeof(cmd), &cmd);
1938 }
1939 #else
1940 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1941 {
1942 return 0;
1943 }
1944 #endif
1945
1946 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1947 struct ieee80211_vif *vif)
1948 {
1949 struct iwl_mu_group_mgmt_cmd cmd = {};
1950
1951 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1952 WLAN_MEMBERSHIP_LEN);
1953 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1954 WLAN_USER_POSITION_LEN);
1955
1956 return iwl_mvm_send_cmd_pdu(mvm,
1957 WIDE_ID(DATA_PATH_GROUP,
1958 UPDATE_MU_GROUPS_CMD),
1959 0, sizeof(cmd), &cmd);
1960 }
1961
1962 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1963 struct ieee80211_vif *vif)
1964 {
1965 if (vif->mu_mimo_owner) {
1966 struct iwl_mu_group_mgmt_notif *notif = _data;
1967
1968 /*
1969 * MU-MIMO Group Id action frame is little endian. We treat
1970 * the data received from firmware as if it came from the
1971 * action frame, so no conversion is needed.
1972 */
1973 ieee80211_update_mu_groups(vif,
1974 (u8 *)&notif->membership_status,
1975 (u8 *)&notif->user_position);
1976 }
1977 }
1978
1979 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1980 struct iwl_rx_cmd_buffer *rxb)
1981 {
1982 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1983 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1984
1985 ieee80211_iterate_active_interfaces_atomic(
1986 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1987 iwl_mvm_mu_mimo_iface_iterator, notif);
1988 }
1989
1990 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit)
1991 {
1992 u8 byte_num = ppe_pos_bit / 8;
1993 u8 bit_num = ppe_pos_bit % 8;
1994 u8 residue_bits;
1995 u8 res;
1996
1997 if (bit_num <= 5)
1998 return (ppe[byte_num] >> bit_num) &
1999 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1);
2000
2001 /*
2002 * If bit_num > 5, we have to combine bits with next byte.
2003 * Calculate how many bits we need to take from current byte (called
2004 * here "residue_bits"), and add them to bits from next byte.
2005 */
2006
2007 residue_bits = 8 - bit_num;
2008
2009 res = (ppe[byte_num + 1] &
2010 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) <<
2011 residue_bits;
2012 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1);
2013
2014 return res;
2015 }
2016
2017 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm,
2018 struct ieee80211_vif *vif, u8 sta_id)
2019 {
2020 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2021 struct iwl_he_sta_context_cmd sta_ctxt_cmd = {
2022 .sta_id = sta_id,
2023 .tid_limit = IWL_MAX_TID_COUNT,
2024 .bss_color = vif->bss_conf.bss_color,
2025 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext,
2026 .frame_time_rts_th =
2027 cpu_to_le16(vif->bss_conf.frame_time_rts_th),
2028 };
2029 int size = fw_has_api(&mvm->fw->ucode_capa,
2030 IWL_UCODE_TLV_API_MBSSID_HE) ?
2031 sizeof(sta_ctxt_cmd) :
2032 sizeof(struct iwl_he_sta_context_cmd_v1);
2033 struct ieee80211_sta *sta;
2034 u32 flags;
2035 int i;
2036
2037 rcu_read_lock();
2038
2039 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]);
2040 if (IS_ERR(sta)) {
2041 rcu_read_unlock();
2042 WARN(1, "Can't find STA to configure HE\n");
2043 return;
2044 }
2045
2046 if (!sta->he_cap.has_he) {
2047 rcu_read_unlock();
2048 return;
2049 }
2050
2051 flags = 0;
2052
2053 /* Block 26-tone RU OFDMA transmissions */
2054 if (mvmvif->he_ru_2mhz_block)
2055 flags |= STA_CTXT_HE_RU_2MHZ_BLOCK;
2056
2057 /* HTC flags */
2058 if (sta->he_cap.he_cap_elem.mac_cap_info[0] &
2059 IEEE80211_HE_MAC_CAP0_HTC_HE)
2060 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT);
2061 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] &
2062 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) ||
2063 (sta->he_cap.he_cap_elem.mac_cap_info[2] &
2064 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) {
2065 u8 link_adap =
2066 ((sta->he_cap.he_cap_elem.mac_cap_info[2] &
2067 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) +
2068 (sta->he_cap.he_cap_elem.mac_cap_info[1] &
2069 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION);
2070
2071 if (link_adap == 2)
2072 sta_ctxt_cmd.htc_flags |=
2073 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED);
2074 else if (link_adap == 3)
2075 sta_ctxt_cmd.htc_flags |=
2076 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH);
2077 }
2078 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR)
2079 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP);
2080 if (sta->he_cap.he_cap_elem.mac_cap_info[3] &
2081 IEEE80211_HE_MAC_CAP3_OMI_CONTROL)
2082 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP);
2083 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR)
2084 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP);
2085
2086 /*
2087 * Initialize the PPE thresholds to "None" (7), as described in Table
2088 * 9-262ac of 80211.ax/D3.0.
2089 */
2090 memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext));
2091
2092 /* If PPE Thresholds exist, parse them into a FW-familiar format. */
2093 if (sta->he_cap.he_cap_elem.phy_cap_info[6] &
2094 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) {
2095 u8 nss = (sta->he_cap.ppe_thres[0] &
2096 IEEE80211_PPE_THRES_NSS_MASK) + 1;
2097 u8 ru_index_bitmap =
2098 (sta->he_cap.ppe_thres[0] &
2099 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >>
2100 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS;
2101 u8 *ppe = &sta->he_cap.ppe_thres[0];
2102 u8 ppe_pos_bit = 7; /* Starting after PPE header */
2103
2104 /*
2105 * FW currently supports only nss == MAX_HE_SUPP_NSS
2106 *
2107 * If nss > MAX: we can ignore values we don't support
2108 * If nss < MAX: we can set zeros in other streams
2109 */
2110 if (nss > MAX_HE_SUPP_NSS) {
2111 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss,
2112 MAX_HE_SUPP_NSS);
2113 nss = MAX_HE_SUPP_NSS;
2114 }
2115
2116 for (i = 0; i < nss; i++) {
2117 u8 ru_index_tmp = ru_index_bitmap << 1;
2118 u8 bw;
2119
2120 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) {
2121 ru_index_tmp >>= 1;
2122 if (!(ru_index_tmp & 1))
2123 continue;
2124
2125 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] =
2126 iwl_mvm_he_get_ppe_val(ppe,
2127 ppe_pos_bit);
2128 ppe_pos_bit +=
2129 IEEE80211_PPE_THRES_INFO_PPET_SIZE;
2130 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] =
2131 iwl_mvm_he_get_ppe_val(ppe,
2132 ppe_pos_bit);
2133 ppe_pos_bit +=
2134 IEEE80211_PPE_THRES_INFO_PPET_SIZE;
2135 }
2136 }
2137
2138 flags |= STA_CTXT_HE_PACKET_EXT;
2139 } else if ((sta->he_cap.he_cap_elem.phy_cap_info[9] &
2140 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) !=
2141 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_RESERVED) {
2142 int low_th = -1;
2143 int high_th = -1;
2144
2145 /* Take the PPE thresholds from the nominal padding info */
2146 switch (sta->he_cap.he_cap_elem.phy_cap_info[9] &
2147 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) {
2148 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_0US:
2149 low_th = IWL_HE_PKT_EXT_NONE;
2150 high_th = IWL_HE_PKT_EXT_NONE;
2151 break;
2152 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_8US:
2153 low_th = IWL_HE_PKT_EXT_BPSK;
2154 high_th = IWL_HE_PKT_EXT_NONE;
2155 break;
2156 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_16US:
2157 low_th = IWL_HE_PKT_EXT_NONE;
2158 high_th = IWL_HE_PKT_EXT_BPSK;
2159 break;
2160 }
2161
2162 /* Set the PPE thresholds accordingly */
2163 if (low_th >= 0 && high_th >= 0) {
2164 struct iwl_he_pkt_ext *pkt_ext =
2165 (struct iwl_he_pkt_ext *)&sta_ctxt_cmd.pkt_ext;
2166
2167 for (i = 0; i < MAX_HE_SUPP_NSS; i++) {
2168 u8 bw;
2169
2170 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX;
2171 bw++) {
2172 pkt_ext->pkt_ext_qam_th[i][bw][0] =
2173 low_th;
2174 pkt_ext->pkt_ext_qam_th[i][bw][1] =
2175 high_th;
2176 }
2177 }
2178
2179 flags |= STA_CTXT_HE_PACKET_EXT;
2180 }
2181 }
2182 rcu_read_unlock();
2183
2184 /* Mark MU EDCA as enabled, unless none detected on some AC */
2185 flags |= STA_CTXT_HE_MU_EDCA_CW;
2186 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
2187 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca =
2188 &mvmvif->queue_params[i].mu_edca_param_rec;
2189 u8 ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
2190
2191 if (!mvmvif->queue_params[i].mu_edca) {
2192 flags &= ~STA_CTXT_HE_MU_EDCA_CW;
2193 break;
2194 }
2195
2196 sta_ctxt_cmd.trig_based_txf[ac].cwmin =
2197 cpu_to_le16(mu_edca->ecw_min_max & 0xf);
2198 sta_ctxt_cmd.trig_based_txf[ac].cwmax =
2199 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4);
2200 sta_ctxt_cmd.trig_based_txf[ac].aifsn =
2201 cpu_to_le16(mu_edca->aifsn);
2202 sta_ctxt_cmd.trig_based_txf[ac].mu_time =
2203 cpu_to_le16(mu_edca->mu_edca_timer);
2204 }
2205
2206 if (vif->bss_conf.multi_sta_back_32bit)
2207 flags |= STA_CTXT_HE_32BIT_BA_BITMAP;
2208
2209 if (vif->bss_conf.ack_enabled)
2210 flags |= STA_CTXT_HE_ACK_ENABLED;
2211
2212 if (vif->bss_conf.uora_exists) {
2213 flags |= STA_CTXT_HE_TRIG_RND_ALLOC;
2214
2215 sta_ctxt_cmd.rand_alloc_ecwmin =
2216 vif->bss_conf.uora_ocw_range & 0x7;
2217 sta_ctxt_cmd.rand_alloc_ecwmax =
2218 (vif->bss_conf.uora_ocw_range >> 3) & 0x7;
2219 }
2220
2221 if (vif->bss_conf.nontransmitted) {
2222 flags |= STA_CTXT_HE_REF_BSSID_VALID;
2223 ether_addr_copy(sta_ctxt_cmd.ref_bssid_addr,
2224 vif->bss_conf.transmitter_bssid);
2225 sta_ctxt_cmd.max_bssid_indicator =
2226 vif->bss_conf.bssid_indicator;
2227 sta_ctxt_cmd.bssid_index = vif->bss_conf.bssid_index;
2228 sta_ctxt_cmd.ema_ap = vif->bss_conf.ema_ap;
2229 sta_ctxt_cmd.profile_periodicity =
2230 vif->bss_conf.profile_periodicity;
2231 }
2232
2233 sta_ctxt_cmd.flags = cpu_to_le32(flags);
2234
2235 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD,
2236 DATA_PATH_GROUP, 0),
2237 0, size, &sta_ctxt_cmd))
2238 IWL_ERR(mvm, "Failed to config FW to work HE!\n");
2239 }
2240
2241 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2242 struct ieee80211_vif *vif,
2243 struct ieee80211_bss_conf *bss_conf,
2244 u32 changes)
2245 {
2246 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2247 int ret;
2248
2249 /*
2250 * Re-calculate the tsf id, as the master-slave relations depend on the
2251 * beacon interval, which was not known when the station interface was
2252 * added.
2253 */
2254 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) {
2255 if (vif->bss_conf.he_support &&
2256 !iwlwifi_mod_params.disable_11ax)
2257 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
2258
2259 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2260 }
2261
2262 /* Update MU EDCA params */
2263 if (changes & BSS_CHANGED_QOS && mvmvif->associated &&
2264 bss_conf->assoc && vif->bss_conf.he_support &&
2265 !iwlwifi_mod_params.disable_11ax)
2266 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
2267
2268 /*
2269 * If we're not associated yet, take the (new) BSSID before associating
2270 * so the firmware knows. If we're already associated, then use the old
2271 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2272 * branch for disassociation below.
2273 */
2274 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2275 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2276
2277 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2278 if (ret)
2279 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2280
2281 /* after sending it once, adopt mac80211 data */
2282 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2283 mvmvif->associated = bss_conf->assoc;
2284
2285 if (changes & BSS_CHANGED_ASSOC) {
2286 if (bss_conf->assoc) {
2287 /* clear statistics to get clean beacon counter */
2288 iwl_mvm_request_statistics(mvm, true);
2289 memset(&mvmvif->beacon_stats, 0,
2290 sizeof(mvmvif->beacon_stats));
2291
2292 /* add quota for this interface */
2293 ret = iwl_mvm_update_quotas(mvm, true, NULL);
2294 if (ret) {
2295 IWL_ERR(mvm, "failed to update quotas\n");
2296 return;
2297 }
2298
2299 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2300 &mvm->status) &&
2301 !fw_has_capa(&mvm->fw->ucode_capa,
2302 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) {
2303 /*
2304 * If we're restarting then the firmware will
2305 * obviously have lost synchronisation with
2306 * the AP. It will attempt to synchronise by
2307 * itself, but we can make it more reliable by
2308 * scheduling a session protection time event.
2309 *
2310 * The firmware needs to receive a beacon to
2311 * catch up with synchronisation, use 110% of
2312 * the beacon interval.
2313 *
2314 * Set a large maximum delay to allow for more
2315 * than a single interface.
2316 *
2317 * For new firmware versions, rely on the
2318 * firmware. This is relevant for DCM scenarios
2319 * only anyway.
2320 */
2321 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2322 iwl_mvm_protect_session(mvm, vif, dur, dur,
2323 5 * dur, false);
2324 }
2325
2326 iwl_mvm_sf_update(mvm, vif, false);
2327 iwl_mvm_power_vif_assoc(mvm, vif);
2328 if (vif->p2p) {
2329 iwl_mvm_update_smps(mvm, vif,
2330 IWL_MVM_SMPS_REQ_PROT,
2331 IEEE80211_SMPS_DYNAMIC);
2332 }
2333 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
2334 /*
2335 * If update fails - SF might be running in associated
2336 * mode while disassociated - which is forbidden.
2337 */
2338 ret = iwl_mvm_sf_update(mvm, vif, false);
2339 WARN_ONCE(ret &&
2340 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
2341 &mvm->status),
2342 "Failed to update SF upon disassociation\n");
2343
2344 /*
2345 * If we get an assert during the connection (after the
2346 * station has been added, but before the vif is set
2347 * to associated), mac80211 will re-add the station and
2348 * then configure the vif. Since the vif is not
2349 * associated, we would remove the station here and
2350 * this would fail the recovery.
2351 */
2352 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2353 &mvm->status)) {
2354 /*
2355 * Remove AP station now that
2356 * the MAC is unassoc
2357 */
2358 ret = iwl_mvm_rm_sta_id(mvm, vif,
2359 mvmvif->ap_sta_id);
2360 if (ret)
2361 IWL_ERR(mvm,
2362 "failed to remove AP station\n");
2363
2364 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
2365 }
2366
2367 /* remove quota for this interface */
2368 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2369 if (ret)
2370 IWL_ERR(mvm, "failed to update quotas\n");
2371
2372 /* this will take the cleared BSSID from bss_conf */
2373 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2374 if (ret)
2375 IWL_ERR(mvm,
2376 "failed to update MAC %pM (clear after unassoc)\n",
2377 vif->addr);
2378 }
2379
2380 /*
2381 * The firmware tracks the MU-MIMO group on its own.
2382 * However, on HW restart we should restore this data.
2383 */
2384 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2385 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2386 ret = iwl_mvm_update_mu_groups(mvm, vif);
2387 if (ret)
2388 IWL_ERR(mvm,
2389 "failed to update VHT MU_MIMO groups\n");
2390 }
2391
2392 iwl_mvm_recalc_multicast(mvm);
2393 iwl_mvm_configure_bcast_filter(mvm);
2394
2395 /* reset rssi values */
2396 mvmvif->bf_data.ave_beacon_signal = 0;
2397
2398 iwl_mvm_bt_coex_vif_change(mvm);
2399 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2400 IEEE80211_SMPS_AUTOMATIC);
2401 if (fw_has_capa(&mvm->fw->ucode_capa,
2402 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2403 iwl_mvm_config_scan(mvm);
2404 }
2405
2406 if (changes & BSS_CHANGED_BEACON_INFO) {
2407 /*
2408 * We received a beacon from the associated AP so
2409 * remove the session protection.
2410 * A firmware with the new API will remove it automatically.
2411 */
2412 if (!fw_has_capa(&mvm->fw->ucode_capa,
2413 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD))
2414 iwl_mvm_stop_session_protection(mvm, vif);
2415
2416 iwl_mvm_sf_update(mvm, vif, false);
2417 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2418 }
2419
2420 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2421 /*
2422 * Send power command on every beacon change,
2423 * because we may have not enabled beacon abort yet.
2424 */
2425 BSS_CHANGED_BEACON_INFO)) {
2426 ret = iwl_mvm_power_update_mac(mvm);
2427 if (ret)
2428 IWL_ERR(mvm, "failed to update power mode\n");
2429 }
2430
2431 if (changes & BSS_CHANGED_TXPOWER) {
2432 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2433 bss_conf->txpower);
2434 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2435 }
2436
2437 if (changes & BSS_CHANGED_CQM) {
2438 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2439 /* reset cqm events tracking */
2440 mvmvif->bf_data.last_cqm_event = 0;
2441 if (mvmvif->bf_data.bf_enabled) {
2442 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2443 if (ret)
2444 IWL_ERR(mvm,
2445 "failed to update CQM thresholds\n");
2446 }
2447 }
2448
2449 if (changes & BSS_CHANGED_ARP_FILTER) {
2450 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2451 iwl_mvm_configure_bcast_filter(mvm);
2452 }
2453 }
2454
2455 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2456 struct ieee80211_vif *vif)
2457 {
2458 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2459 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2460 int ret, i;
2461
2462 mutex_lock(&mvm->mutex);
2463
2464 /* Send the beacon template */
2465 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2466 if (ret)
2467 goto out_unlock;
2468
2469 /*
2470 * Re-calculate the tsf id, as the master-slave relations depend on the
2471 * beacon interval, which was not known when the AP interface was added.
2472 */
2473 if (vif->type == NL80211_IFTYPE_AP)
2474 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2475
2476 mvmvif->ap_assoc_sta_count = 0;
2477
2478 /* Add the mac context */
2479 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2480 if (ret)
2481 goto out_unlock;
2482
2483 /* Perform the binding */
2484 ret = iwl_mvm_binding_add_vif(mvm, vif);
2485 if (ret)
2486 goto out_remove;
2487
2488 /*
2489 * This is not very nice, but the simplest:
2490 * For older FWs adding the mcast sta before the bcast station may
2491 * cause assert 0x2b00.
2492 * This is fixed in later FW so make the order of removal depend on
2493 * the TLV
2494 */
2495 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2496 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2497 if (ret)
2498 goto out_unbind;
2499 /*
2500 * Send the bcast station. At this stage the TBTT and DTIM time
2501 * events are added and applied to the scheduler
2502 */
2503 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2504 if (ret) {
2505 iwl_mvm_rm_mcast_sta(mvm, vif);
2506 goto out_unbind;
2507 }
2508 } else {
2509 /*
2510 * Send the bcast station. At this stage the TBTT and DTIM time
2511 * events are added and applied to the scheduler
2512 */
2513 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2514 if (ret)
2515 goto out_unbind;
2516 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2517 if (ret) {
2518 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2519 goto out_unbind;
2520 }
2521 }
2522
2523 /* must be set before quota calculations */
2524 mvmvif->ap_ibss_active = true;
2525
2526 /* send all the early keys to the device now */
2527 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) {
2528 struct ieee80211_key_conf *key = mvmvif->ap_early_keys[i];
2529
2530 if (!key)
2531 continue;
2532
2533 mvmvif->ap_early_keys[i] = NULL;
2534
2535 ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key);
2536 if (ret)
2537 goto out_quota_failed;
2538 }
2539
2540 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) {
2541 iwl_mvm_vif_set_low_latency(mvmvif, true,
2542 LOW_LATENCY_VIF_TYPE);
2543 iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id);
2544 }
2545
2546 /* power updated needs to be done before quotas */
2547 iwl_mvm_power_update_mac(mvm);
2548
2549 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2550 if (ret)
2551 goto out_quota_failed;
2552
2553 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2554 if (vif->p2p && mvm->p2p_device_vif)
2555 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2556
2557 iwl_mvm_bt_coex_vif_change(mvm);
2558
2559 /* we don't support TDLS during DCM */
2560 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2561 iwl_mvm_teardown_tdls_peers(mvm);
2562
2563 iwl_mvm_ftm_restart_responder(mvm, vif);
2564
2565 goto out_unlock;
2566
2567 out_quota_failed:
2568 iwl_mvm_power_update_mac(mvm);
2569 mvmvif->ap_ibss_active = false;
2570 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2571 iwl_mvm_rm_mcast_sta(mvm, vif);
2572 out_unbind:
2573 iwl_mvm_binding_remove_vif(mvm, vif);
2574 out_remove:
2575 iwl_mvm_mac_ctxt_remove(mvm, vif);
2576 out_unlock:
2577 mutex_unlock(&mvm->mutex);
2578 return ret;
2579 }
2580
2581 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2582 struct ieee80211_vif *vif)
2583 {
2584 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2585 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2586
2587 iwl_mvm_prepare_mac_removal(mvm, vif);
2588
2589 mutex_lock(&mvm->mutex);
2590
2591 /* Handle AP stop while in CSA */
2592 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2593 iwl_mvm_remove_time_event(mvm, mvmvif,
2594 &mvmvif->time_event_data);
2595 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2596 mvmvif->csa_countdown = false;
2597 }
2598
2599 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2600 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2601 mvm->csa_tx_block_bcn_timeout = 0;
2602 }
2603
2604 mvmvif->ap_ibss_active = false;
2605 mvm->ap_last_beacon_gp2 = 0;
2606
2607 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) {
2608 iwl_mvm_vif_set_low_latency(mvmvif, false,
2609 LOW_LATENCY_VIF_TYPE);
2610 iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id);
2611 }
2612
2613 iwl_mvm_bt_coex_vif_change(mvm);
2614
2615 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2616 if (vif->p2p && mvm->p2p_device_vif)
2617 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2618
2619 iwl_mvm_update_quotas(mvm, false, NULL);
2620
2621 /*
2622 * This is not very nice, but the simplest:
2623 * For older FWs removing the mcast sta before the bcast station may
2624 * cause assert 0x2b00.
2625 * This is fixed in later FW (which will stop beaconing when removing
2626 * bcast station).
2627 * So make the order of removal depend on the TLV
2628 */
2629 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2630 iwl_mvm_rm_mcast_sta(mvm, vif);
2631 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2632 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2633 iwl_mvm_rm_mcast_sta(mvm, vif);
2634 iwl_mvm_binding_remove_vif(mvm, vif);
2635
2636 iwl_mvm_power_update_mac(mvm);
2637
2638 iwl_mvm_mac_ctxt_remove(mvm, vif);
2639
2640 mutex_unlock(&mvm->mutex);
2641 }
2642
2643 static void
2644 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2645 struct ieee80211_vif *vif,
2646 struct ieee80211_bss_conf *bss_conf,
2647 u32 changes)
2648 {
2649 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2650
2651 /* Changes will be applied when the AP/IBSS is started */
2652 if (!mvmvif->ap_ibss_active)
2653 return;
2654
2655 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2656 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2657 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2658 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2659
2660 /* Need to send a new beacon template to the FW */
2661 if (changes & BSS_CHANGED_BEACON &&
2662 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2663 IWL_WARN(mvm, "Failed updating beacon data\n");
2664
2665 if (changes & BSS_CHANGED_TXPOWER) {
2666 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2667 bss_conf->txpower);
2668 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2669 }
2670
2671 if (changes & BSS_CHANGED_FTM_RESPONDER) {
2672 int ret = iwl_mvm_ftm_start_responder(mvm, vif);
2673
2674 if (ret)
2675 IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n",
2676 ret);
2677 }
2678
2679 }
2680
2681 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2682 struct ieee80211_vif *vif,
2683 struct ieee80211_bss_conf *bss_conf,
2684 u32 changes)
2685 {
2686 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2687
2688 mutex_lock(&mvm->mutex);
2689
2690 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2691 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2692
2693 switch (vif->type) {
2694 case NL80211_IFTYPE_STATION:
2695 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2696 break;
2697 case NL80211_IFTYPE_AP:
2698 case NL80211_IFTYPE_ADHOC:
2699 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2700 break;
2701 case NL80211_IFTYPE_MONITOR:
2702 if (changes & BSS_CHANGED_MU_GROUPS)
2703 iwl_mvm_update_mu_groups(mvm, vif);
2704 break;
2705 default:
2706 /* shouldn't happen */
2707 WARN_ON_ONCE(1);
2708 }
2709
2710 mutex_unlock(&mvm->mutex);
2711 }
2712
2713 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2714 struct ieee80211_vif *vif,
2715 struct ieee80211_scan_request *hw_req)
2716 {
2717 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2718 int ret;
2719
2720 if (hw_req->req.n_channels == 0 ||
2721 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2722 return -EINVAL;
2723
2724 mutex_lock(&mvm->mutex);
2725 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2726 mutex_unlock(&mvm->mutex);
2727
2728 return ret;
2729 }
2730
2731 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2732 struct ieee80211_vif *vif)
2733 {
2734 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2735
2736 mutex_lock(&mvm->mutex);
2737
2738 /* Due to a race condition, it's possible that mac80211 asks
2739 * us to stop a hw_scan when it's already stopped. This can
2740 * happen, for instance, if we stopped the scan ourselves,
2741 * called ieee80211_scan_completed() and the userspace called
2742 * cancel scan scan before ieee80211_scan_work() could run.
2743 * To handle that, simply return if the scan is not running.
2744 */
2745 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2746 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2747
2748 mutex_unlock(&mvm->mutex);
2749 }
2750
2751 static void
2752 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2753 struct ieee80211_sta *sta, u16 tids,
2754 int num_frames,
2755 enum ieee80211_frame_release_type reason,
2756 bool more_data)
2757 {
2758 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2759
2760 /* Called when we need to transmit (a) frame(s) from mac80211 */
2761
2762 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2763 tids, more_data, false);
2764 }
2765
2766 static void
2767 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2768 struct ieee80211_sta *sta, u16 tids,
2769 int num_frames,
2770 enum ieee80211_frame_release_type reason,
2771 bool more_data)
2772 {
2773 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2774
2775 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2776
2777 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2778 tids, more_data, true);
2779 }
2780
2781 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2782 enum sta_notify_cmd cmd,
2783 struct ieee80211_sta *sta)
2784 {
2785 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2786 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2787 unsigned long txqs = 0, tids = 0;
2788 int tid;
2789
2790 /*
2791 * If we have TVQM then we get too high queue numbers - luckily
2792 * we really shouldn't get here with that because such hardware
2793 * should have firmware supporting buffer station offload.
2794 */
2795 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
2796 return;
2797
2798 spin_lock_bh(&mvmsta->lock);
2799 for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) {
2800 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2801
2802 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2803 continue;
2804
2805 __set_bit(tid_data->txq_id, &txqs);
2806
2807 if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2808 continue;
2809
2810 __set_bit(tid, &tids);
2811 }
2812
2813 switch (cmd) {
2814 case STA_NOTIFY_SLEEP:
2815 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2816 ieee80211_sta_set_buffered(sta, tid, true);
2817
2818 if (txqs)
2819 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2820 /*
2821 * The fw updates the STA to be asleep. Tx packets on the Tx
2822 * queues to this station will not be transmitted. The fw will
2823 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2824 */
2825 break;
2826 case STA_NOTIFY_AWAKE:
2827 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2828 break;
2829
2830 if (txqs)
2831 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2832 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2833 break;
2834 default:
2835 break;
2836 }
2837 spin_unlock_bh(&mvmsta->lock);
2838 }
2839
2840 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2841 struct ieee80211_vif *vif,
2842 enum sta_notify_cmd cmd,
2843 struct ieee80211_sta *sta)
2844 {
2845 __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2846 }
2847
2848 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2849 {
2850 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2851 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2852 struct ieee80211_sta *sta;
2853 struct iwl_mvm_sta *mvmsta;
2854 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2855
2856 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2857 return;
2858
2859 rcu_read_lock();
2860 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2861 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2862 rcu_read_unlock();
2863 return;
2864 }
2865
2866 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2867
2868 if (!mvmsta->vif ||
2869 mvmsta->vif->type != NL80211_IFTYPE_AP) {
2870 rcu_read_unlock();
2871 return;
2872 }
2873
2874 if (mvmsta->sleeping != sleeping) {
2875 mvmsta->sleeping = sleeping;
2876 __iwl_mvm_mac_sta_notify(mvm->hw,
2877 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2878 sta);
2879 ieee80211_sta_ps_transition(sta, sleeping);
2880 }
2881
2882 if (sleeping) {
2883 switch (notif->type) {
2884 case IWL_MVM_PM_EVENT_AWAKE:
2885 case IWL_MVM_PM_EVENT_ASLEEP:
2886 break;
2887 case IWL_MVM_PM_EVENT_UAPSD:
2888 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2889 break;
2890 case IWL_MVM_PM_EVENT_PS_POLL:
2891 ieee80211_sta_pspoll(sta);
2892 break;
2893 default:
2894 break;
2895 }
2896 }
2897
2898 rcu_read_unlock();
2899 }
2900
2901 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2902 struct ieee80211_vif *vif,
2903 struct ieee80211_sta *sta)
2904 {
2905 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2906 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2907
2908 /*
2909 * This is called before mac80211 does RCU synchronisation,
2910 * so here we already invalidate our internal RCU-protected
2911 * station pointer. The rest of the code will thus no longer
2912 * be able to find the station this way, and we don't rely
2913 * on further RCU synchronisation after the sta_state()
2914 * callback deleted the station.
2915 */
2916 mutex_lock(&mvm->mutex);
2917 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2918 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2919 ERR_PTR(-ENOENT));
2920
2921 mutex_unlock(&mvm->mutex);
2922 }
2923
2924 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2925 const u8 *bssid)
2926 {
2927 int i;
2928
2929 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
2930 struct iwl_mvm_tcm_mac *mdata;
2931
2932 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id];
2933 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
2934 mdata->opened_rx_ba_sessions = false;
2935 }
2936
2937 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2938 return;
2939
2940 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2941 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2942 return;
2943 }
2944
2945 if (!vif->p2p &&
2946 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2947 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2948 return;
2949 }
2950
2951 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) {
2952 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) {
2953 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2954 return;
2955 }
2956 }
2957
2958 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2959 }
2960
2961 static void
2962 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2963 struct ieee80211_vif *vif, u8 *peer_addr,
2964 enum nl80211_tdls_operation action)
2965 {
2966 struct iwl_fw_dbg_trigger_tlv *trig;
2967 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2968
2969 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
2970 FW_DBG_TRIGGER_TDLS);
2971 if (!trig)
2972 return;
2973
2974 tdls_trig = (void *)trig->data;
2975
2976 if (!(tdls_trig->action_bitmap & BIT(action)))
2977 return;
2978
2979 if (tdls_trig->peer_mode &&
2980 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2981 return;
2982
2983 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2984 "TDLS event occurred, peer %pM, action %d",
2985 peer_addr, action);
2986 }
2987
2988 struct iwl_mvm_he_obss_narrow_bw_ru_data {
2989 bool tolerated;
2990 };
2991
2992 static void iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy,
2993 struct cfg80211_bss *bss,
2994 void *_data)
2995 {
2996 struct iwl_mvm_he_obss_narrow_bw_ru_data *data = _data;
2997 const struct element *elem;
2998
2999 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, bss->ies->data,
3000 bss->ies->len);
3001
3002 if (!elem || elem->datalen < 10 ||
3003 !(elem->data[10] &
3004 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) {
3005 data->tolerated = false;
3006 }
3007 }
3008
3009 static void iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw *hw,
3010 struct ieee80211_vif *vif)
3011 {
3012 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3013 struct iwl_mvm_he_obss_narrow_bw_ru_data iter_data = {
3014 .tolerated = true,
3015 };
3016
3017 if (!(vif->bss_conf.chandef.chan->flags & IEEE80211_CHAN_RADAR)) {
3018 mvmvif->he_ru_2mhz_block = false;
3019 return;
3020 }
3021
3022 cfg80211_bss_iter(hw->wiphy, &vif->bss_conf.chandef,
3023 iwl_mvm_check_he_obss_narrow_bw_ru_iter,
3024 &iter_data);
3025
3026 /*
3027 * If there is at least one AP on radar channel that cannot
3028 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU.
3029 */
3030 mvmvif->he_ru_2mhz_block = !iter_data.tolerated;
3031 }
3032
3033 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
3034 struct ieee80211_vif *vif,
3035 struct ieee80211_sta *sta,
3036 enum ieee80211_sta_state old_state,
3037 enum ieee80211_sta_state new_state)
3038 {
3039 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3040 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3041 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3042 int ret;
3043
3044 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
3045 sta->addr, old_state, new_state);
3046
3047 /* this would be a mac80211 bug ... but don't crash */
3048 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
3049 return -EINVAL;
3050
3051 /*
3052 * If we are in a STA removal flow and in DQA mode:
3053 *
3054 * This is after the sync_rcu part, so the queues have already been
3055 * flushed. No more TXs on their way in mac80211's path, and no more in
3056 * the queues.
3057 * Also, we won't be getting any new TX frames for this station.
3058 * What we might have are deferred TX frames that need to be taken care
3059 * of.
3060 *
3061 * Drop any still-queued deferred-frame before removing the STA, and
3062 * make sure the worker is no longer handling frames for this STA.
3063 */
3064 if (old_state == IEEE80211_STA_NONE &&
3065 new_state == IEEE80211_STA_NOTEXIST) {
3066 flush_work(&mvm->add_stream_wk);
3067
3068 /*
3069 * No need to make sure deferred TX indication is off since the
3070 * worker will already remove it if it was on
3071 */
3072 }
3073
3074 mutex_lock(&mvm->mutex);
3075 /* track whether or not the station is associated */
3076 mvm_sta->sta_state = new_state;
3077
3078 if (old_state == IEEE80211_STA_NOTEXIST &&
3079 new_state == IEEE80211_STA_NONE) {
3080 /*
3081 * Firmware bug - it'll crash if the beacon interval is less
3082 * than 16. We can't avoid connecting at all, so refuse the
3083 * station state change, this will cause mac80211 to abandon
3084 * attempts to connect to this AP, and eventually wpa_s will
3085 * blacklist the AP...
3086 */
3087 if (vif->type == NL80211_IFTYPE_STATION &&
3088 vif->bss_conf.beacon_int < 16) {
3089 IWL_ERR(mvm,
3090 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
3091 sta->addr, vif->bss_conf.beacon_int);
3092 ret = -EINVAL;
3093 goto out_unlock;
3094 }
3095
3096 if (sta->tdls &&
3097 (vif->p2p ||
3098 iwl_mvm_tdls_sta_count(mvm, NULL) ==
3099 IWL_MVM_TDLS_STA_COUNT ||
3100 iwl_mvm_phy_ctx_count(mvm) > 1)) {
3101 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
3102 ret = -EBUSY;
3103 goto out_unlock;
3104 }
3105
3106 ret = iwl_mvm_add_sta(mvm, vif, sta);
3107 if (sta->tdls && ret == 0) {
3108 iwl_mvm_recalc_tdls_state(mvm, vif, true);
3109 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3110 NL80211_TDLS_SETUP);
3111 }
3112
3113 sta->max_rc_amsdu_len = 1;
3114 } else if (old_state == IEEE80211_STA_NONE &&
3115 new_state == IEEE80211_STA_AUTH) {
3116 /*
3117 * EBS may be disabled due to previous failures reported by FW.
3118 * Reset EBS status here assuming environment has been changed.
3119 */
3120 mvm->last_ebs_successful = true;
3121 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
3122 ret = 0;
3123 } else if (old_state == IEEE80211_STA_AUTH &&
3124 new_state == IEEE80211_STA_ASSOC) {
3125 if (vif->type == NL80211_IFTYPE_AP) {
3126 vif->bss_conf.he_support = sta->he_cap.has_he;
3127 mvmvif->ap_assoc_sta_count++;
3128 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3129 if (vif->bss_conf.he_support &&
3130 !iwlwifi_mod_params.disable_11ax)
3131 iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id);
3132 } else if (vif->type == NL80211_IFTYPE_STATION) {
3133 vif->bss_conf.he_support = sta->he_cap.has_he;
3134
3135 mvmvif->he_ru_2mhz_block = false;
3136 if (sta->he_cap.has_he)
3137 iwl_mvm_check_he_obss_narrow_bw_ru(hw, vif);
3138
3139 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3140 }
3141
3142 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3143 false);
3144 ret = iwl_mvm_update_sta(mvm, vif, sta);
3145 } else if (old_state == IEEE80211_STA_ASSOC &&
3146 new_state == IEEE80211_STA_AUTHORIZED) {
3147 ret = 0;
3148
3149 /* we don't support TDLS during DCM */
3150 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3151 iwl_mvm_teardown_tdls_peers(mvm);
3152
3153 if (sta->tdls)
3154 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3155 NL80211_TDLS_ENABLE_LINK);
3156
3157 /* enable beacon filtering */
3158 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
3159
3160 /*
3161 * Now that the station is authorized, i.e., keys were already
3162 * installed, need to indicate to the FW that
3163 * multicast data frames can be forwarded to the driver
3164 */
3165 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3166
3167 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3168 true);
3169 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
3170 new_state == IEEE80211_STA_ASSOC) {
3171 /* Multicast data frames are no longer allowed */
3172 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3173
3174 /* disable beacon filtering */
3175 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3176 WARN_ON(ret &&
3177 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
3178 &mvm->status));
3179 ret = 0;
3180 } else if (old_state == IEEE80211_STA_ASSOC &&
3181 new_state == IEEE80211_STA_AUTH) {
3182 if (vif->type == NL80211_IFTYPE_AP) {
3183 mvmvif->ap_assoc_sta_count--;
3184 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3185 }
3186 ret = 0;
3187 } else if (old_state == IEEE80211_STA_AUTH &&
3188 new_state == IEEE80211_STA_NONE) {
3189 ret = 0;
3190 } else if (old_state == IEEE80211_STA_NONE &&
3191 new_state == IEEE80211_STA_NOTEXIST) {
3192 ret = iwl_mvm_rm_sta(mvm, vif, sta);
3193 if (sta->tdls) {
3194 iwl_mvm_recalc_tdls_state(mvm, vif, false);
3195 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3196 NL80211_TDLS_DISABLE_LINK);
3197 }
3198
3199 if (unlikely(ret &&
3200 test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
3201 &mvm->status)))
3202 ret = 0;
3203 } else {
3204 ret = -EIO;
3205 }
3206 out_unlock:
3207 mutex_unlock(&mvm->mutex);
3208
3209 if (sta->tdls && ret == 0) {
3210 if (old_state == IEEE80211_STA_NOTEXIST &&
3211 new_state == IEEE80211_STA_NONE)
3212 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3213 else if (old_state == IEEE80211_STA_NONE &&
3214 new_state == IEEE80211_STA_NOTEXIST)
3215 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3216 }
3217
3218 return ret;
3219 }
3220
3221 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3222 {
3223 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3224
3225 mvm->rts_threshold = value;
3226
3227 return 0;
3228 }
3229
3230 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
3231 struct ieee80211_vif *vif,
3232 struct ieee80211_sta *sta, u32 changed)
3233 {
3234 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3235 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3236
3237 if (changed & (IEEE80211_RC_BW_CHANGED |
3238 IEEE80211_RC_SUPP_RATES_CHANGED |
3239 IEEE80211_RC_NSS_CHANGED))
3240 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3241 true);
3242
3243 if (vif->type == NL80211_IFTYPE_STATION &&
3244 changed & IEEE80211_RC_NSS_CHANGED)
3245 iwl_mvm_sf_update(mvm, vif, false);
3246 }
3247
3248 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
3249 struct ieee80211_vif *vif, u16 ac,
3250 const struct ieee80211_tx_queue_params *params)
3251 {
3252 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3253 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3254
3255 mvmvif->queue_params[ac] = *params;
3256
3257 /*
3258 * No need to update right away, we'll get BSS_CHANGED_QOS
3259 * The exception is P2P_DEVICE interface which needs immediate update.
3260 */
3261 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
3262 int ret;
3263
3264 mutex_lock(&mvm->mutex);
3265 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3266 mutex_unlock(&mvm->mutex);
3267 return ret;
3268 }
3269 return 0;
3270 }
3271
3272 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
3273 struct ieee80211_vif *vif,
3274 u16 req_duration)
3275 {
3276 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3277 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
3278 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
3279
3280 if (req_duration > duration)
3281 duration = req_duration;
3282
3283 mutex_lock(&mvm->mutex);
3284 /* Try really hard to protect the session and hear a beacon
3285 * The new session protection command allows us to protect the
3286 * session for a much longer time since the firmware will internally
3287 * create two events: a 300TU one with a very high priority that
3288 * won't be fragmented which should be enough for 99% of the cases,
3289 * and another one (which we configure here to be 900TU long) which
3290 * will have a slightly lower priority, but more importantly, can be
3291 * fragmented so that it'll allow other activities to run.
3292 */
3293 if (fw_has_capa(&mvm->fw->ucode_capa,
3294 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD))
3295 iwl_mvm_schedule_session_protection(mvm, vif, 900,
3296 min_duration);
3297 else
3298 iwl_mvm_protect_session(mvm, vif, duration,
3299 min_duration, 500, false);
3300 mutex_unlock(&mvm->mutex);
3301 }
3302
3303 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
3304 struct ieee80211_vif *vif,
3305 struct cfg80211_sched_scan_request *req,
3306 struct ieee80211_scan_ies *ies)
3307 {
3308 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3309
3310 int ret;
3311
3312 mutex_lock(&mvm->mutex);
3313
3314 if (!vif->bss_conf.idle) {
3315 ret = -EBUSY;
3316 goto out;
3317 }
3318
3319 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
3320
3321 out:
3322 mutex_unlock(&mvm->mutex);
3323 return ret;
3324 }
3325
3326 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
3327 struct ieee80211_vif *vif)
3328 {
3329 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3330 int ret;
3331
3332 mutex_lock(&mvm->mutex);
3333
3334 /* Due to a race condition, it's possible that mac80211 asks
3335 * us to stop a sched_scan when it's already stopped. This
3336 * can happen, for instance, if we stopped the scan ourselves,
3337 * called ieee80211_sched_scan_stopped() and the userspace called
3338 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
3339 * could run. To handle this, simply return if the scan is
3340 * not running.
3341 */
3342 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
3343 mutex_unlock(&mvm->mutex);
3344 return 0;
3345 }
3346
3347 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
3348 mutex_unlock(&mvm->mutex);
3349 iwl_mvm_wait_for_async_handlers(mvm);
3350
3351 return ret;
3352 }
3353
3354 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
3355 enum set_key_cmd cmd,
3356 struct ieee80211_vif *vif,
3357 struct ieee80211_sta *sta,
3358 struct ieee80211_key_conf *key)
3359 {
3360 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3361 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3362 struct iwl_mvm_sta *mvmsta;
3363 struct iwl_mvm_key_pn *ptk_pn;
3364 int keyidx = key->keyidx;
3365 int ret, i;
3366 u8 key_offset;
3367
3368 if (iwlwifi_mod_params.swcrypto) {
3369 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
3370 return -EOPNOTSUPP;
3371 }
3372
3373 switch (key->cipher) {
3374 case WLAN_CIPHER_SUITE_TKIP:
3375 if (!mvm->trans->trans_cfg->gen2) {
3376 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3377 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3378 } else if (vif->type == NL80211_IFTYPE_STATION) {
3379 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE;
3380 } else {
3381 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n");
3382 return -EOPNOTSUPP;
3383 }
3384 break;
3385 case WLAN_CIPHER_SUITE_CCMP:
3386 case WLAN_CIPHER_SUITE_GCMP:
3387 case WLAN_CIPHER_SUITE_GCMP_256:
3388 if (!iwl_mvm_has_new_tx_api(mvm))
3389 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3390 break;
3391 case WLAN_CIPHER_SUITE_AES_CMAC:
3392 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3393 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3394 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
3395 break;
3396 case WLAN_CIPHER_SUITE_WEP40:
3397 case WLAN_CIPHER_SUITE_WEP104:
3398 if (vif->type == NL80211_IFTYPE_STATION)
3399 break;
3400 if (iwl_mvm_has_new_tx_api(mvm))
3401 return -EOPNOTSUPP;
3402 /* support HW crypto on TX */
3403 return 0;
3404 default:
3405 /* currently FW supports only one optional cipher scheme */
3406 if (hw->n_cipher_schemes &&
3407 hw->cipher_schemes->cipher == key->cipher)
3408 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3409 else
3410 return -EOPNOTSUPP;
3411 }
3412
3413 switch (cmd) {
3414 case SET_KEY:
3415 if ((vif->type == NL80211_IFTYPE_ADHOC ||
3416 vif->type == NL80211_IFTYPE_AP) && !sta) {
3417 /*
3418 * GTK on AP interface is a TX-only key, return 0;
3419 * on IBSS they're per-station and because we're lazy
3420 * we don't support them for RX, so do the same.
3421 * CMAC/GMAC in AP/IBSS modes must be done in software.
3422 */
3423 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3424 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3425 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3426 ret = -EOPNOTSUPP;
3427 else
3428 ret = 0;
3429
3430 if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
3431 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
3432 !iwl_mvm_has_new_tx_api(mvm)) {
3433 key->hw_key_idx = STA_KEY_IDX_INVALID;
3434 break;
3435 }
3436
3437 if (!mvmvif->ap_ibss_active) {
3438 for (i = 0;
3439 i < ARRAY_SIZE(mvmvif->ap_early_keys);
3440 i++) {
3441 if (!mvmvif->ap_early_keys[i]) {
3442 mvmvif->ap_early_keys[i] = key;
3443 break;
3444 }
3445 }
3446
3447 if (i >= ARRAY_SIZE(mvmvif->ap_early_keys))
3448 ret = -ENOSPC;
3449
3450 break;
3451 }
3452 }
3453
3454 /* During FW restart, in order to restore the state as it was,
3455 * don't try to reprogram keys we previously failed for.
3456 */
3457 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3458 key->hw_key_idx == STA_KEY_IDX_INVALID) {
3459 IWL_DEBUG_MAC80211(mvm,
3460 "skip invalid idx key programming during restart\n");
3461 ret = 0;
3462 break;
3463 }
3464
3465 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3466 sta && iwl_mvm_has_new_rx_api(mvm) &&
3467 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3468 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3469 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3470 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3471 struct ieee80211_key_seq seq;
3472 int tid, q;
3473
3474 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3475 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
3476 ptk_pn = kzalloc(struct_size(ptk_pn, q,
3477 mvm->trans->num_rx_queues),
3478 GFP_KERNEL);
3479 if (!ptk_pn) {
3480 ret = -ENOMEM;
3481 break;
3482 }
3483
3484 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
3485 ieee80211_get_key_rx_seq(key, tid, &seq);
3486 for (q = 0; q < mvm->trans->num_rx_queues; q++)
3487 memcpy(ptk_pn->q[q].pn[tid],
3488 seq.ccmp.pn,
3489 IEEE80211_CCMP_PN_LEN);
3490 }
3491
3492 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
3493 }
3494
3495 /* in HW restart reuse the index, otherwise request a new one */
3496 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3497 key_offset = key->hw_key_idx;
3498 else
3499 key_offset = STA_KEY_IDX_INVALID;
3500
3501 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3502 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
3503 if (ret) {
3504 IWL_WARN(mvm, "set key failed\n");
3505 key->hw_key_idx = STA_KEY_IDX_INVALID;
3506 /*
3507 * can't add key for RX, but we don't need it
3508 * in the device for TX so still return 0,
3509 * unless we have new TX API where we cannot
3510 * put key material into the TX_CMD
3511 */
3512 if (iwl_mvm_has_new_tx_api(mvm))
3513 ret = -EOPNOTSUPP;
3514 else
3515 ret = 0;
3516 }
3517
3518 break;
3519 case DISABLE_KEY:
3520 ret = -ENOENT;
3521 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) {
3522 if (mvmvif->ap_early_keys[i] == key) {
3523 mvmvif->ap_early_keys[i] = NULL;
3524 ret = 0;
3525 }
3526 }
3527
3528 /* found in pending list - don't do anything else */
3529 if (ret == 0)
3530 break;
3531
3532 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3533 ret = 0;
3534 break;
3535 }
3536
3537 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
3538 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3539 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3540 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3541 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3542 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3543 ptk_pn = rcu_dereference_protected(
3544 mvmsta->ptk_pn[keyidx],
3545 lockdep_is_held(&mvm->mutex));
3546 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3547 if (ptk_pn)
3548 kfree_rcu(ptk_pn, rcu_head);
3549 }
3550
3551 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3552 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3553 break;
3554 default:
3555 ret = -EINVAL;
3556 }
3557
3558 return ret;
3559 }
3560
3561 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
3562 enum set_key_cmd cmd,
3563 struct ieee80211_vif *vif,
3564 struct ieee80211_sta *sta,
3565 struct ieee80211_key_conf *key)
3566 {
3567 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3568 int ret;
3569
3570 mutex_lock(&mvm->mutex);
3571 ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key);
3572 mutex_unlock(&mvm->mutex);
3573
3574 return ret;
3575 }
3576
3577 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3578 struct ieee80211_vif *vif,
3579 struct ieee80211_key_conf *keyconf,
3580 struct ieee80211_sta *sta,
3581 u32 iv32, u16 *phase1key)
3582 {
3583 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3584
3585 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3586 return;
3587
3588 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3589 }
3590
3591
3592 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3593 struct iwl_rx_packet *pkt, void *data)
3594 {
3595 struct iwl_mvm *mvm =
3596 container_of(notif_wait, struct iwl_mvm, notif_wait);
3597 struct iwl_hs20_roc_res *resp;
3598 int resp_len = iwl_rx_packet_payload_len(pkt);
3599 struct iwl_mvm_time_event_data *te_data = data;
3600
3601 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3602 return true;
3603
3604 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3605 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3606 return true;
3607 }
3608
3609 resp = (void *)pkt->data;
3610
3611 IWL_DEBUG_TE(mvm,
3612 "Aux ROC: Received response from ucode: status=%d uid=%d\n",
3613 resp->status, resp->event_unique_id);
3614
3615 te_data->uid = le32_to_cpu(resp->event_unique_id);
3616 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3617 te_data->uid);
3618
3619 spin_lock_bh(&mvm->time_event_lock);
3620 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3621 spin_unlock_bh(&mvm->time_event_lock);
3622
3623 return true;
3624 }
3625
3626 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3627 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3628 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3629 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3630 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3631 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3632 struct ieee80211_channel *channel,
3633 struct ieee80211_vif *vif,
3634 int duration)
3635 {
3636 int res;
3637 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3638 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3639 static const u16 time_event_response[] = { HOT_SPOT_CMD };
3640 struct iwl_notification_wait wait_time_event;
3641 u32 dtim_interval = vif->bss_conf.dtim_period *
3642 vif->bss_conf.beacon_int;
3643 u32 req_dur, delay;
3644 struct iwl_hs20_roc_req aux_roc_req = {
3645 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3646 .id_and_color =
3647 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3648 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3649 };
3650 struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm,
3651 &aux_roc_req.channel_info);
3652 u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm);
3653
3654 /* Set the channel info data */
3655 iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value,
3656 iwl_mvm_phy_band_from_nl80211(channel->band),
3657 PHY_VHT_CHANNEL_MODE20,
3658 0);
3659
3660 /* Set the time and duration */
3661 tail->apply_time = cpu_to_le32(iwl_mvm_get_systime(mvm));
3662
3663 delay = AUX_ROC_MIN_DELAY;
3664 req_dur = MSEC_TO_TU(duration);
3665
3666 /*
3667 * If we are associated we want the delay time to be at least one
3668 * dtim interval so that the FW can wait until after the DTIM and
3669 * then start the time event, this will potentially allow us to
3670 * remain off-channel for the max duration.
3671 * Since we want to use almost a whole dtim interval we would also
3672 * like the delay to be for 2-3 dtim intervals, in case there are
3673 * other time events with higher priority.
3674 */
3675 if (vif->bss_conf.assoc) {
3676 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3677 /* We cannot remain off-channel longer than the DTIM interval */
3678 if (dtim_interval <= req_dur) {
3679 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3680 if (req_dur <= AUX_ROC_MIN_DURATION)
3681 req_dur = dtim_interval -
3682 AUX_ROC_MIN_SAFETY_BUFFER;
3683 }
3684 }
3685
3686 tail->duration = cpu_to_le32(req_dur);
3687 tail->apply_time_max_delay = cpu_to_le32(delay);
3688
3689 IWL_DEBUG_TE(mvm,
3690 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3691 channel->hw_value, req_dur, duration, delay,
3692 dtim_interval);
3693 /* Set the node address */
3694 memcpy(tail->node_addr, vif->addr, ETH_ALEN);
3695
3696 lockdep_assert_held(&mvm->mutex);
3697
3698 spin_lock_bh(&mvm->time_event_lock);
3699
3700 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3701 spin_unlock_bh(&mvm->time_event_lock);
3702 return -EIO;
3703 }
3704
3705 te_data->vif = vif;
3706 te_data->duration = duration;
3707 te_data->id = HOT_SPOT_CMD;
3708
3709 spin_unlock_bh(&mvm->time_event_lock);
3710
3711 /*
3712 * Use a notification wait, which really just processes the
3713 * command response and doesn't wait for anything, in order
3714 * to be able to process the response and get the UID inside
3715 * the RX path. Using CMD_WANT_SKB doesn't work because it
3716 * stores the buffer and then wakes up this thread, by which
3717 * time another notification (that the time event started)
3718 * might already be processed unsuccessfully.
3719 */
3720 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3721 time_event_response,
3722 ARRAY_SIZE(time_event_response),
3723 iwl_mvm_rx_aux_roc, te_data);
3724
3725 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, len,
3726 &aux_roc_req);
3727
3728 if (res) {
3729 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3730 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3731 goto out_clear_te;
3732 }
3733
3734 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3735 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3736 /* should never fail */
3737 WARN_ON_ONCE(res);
3738
3739 if (res) {
3740 out_clear_te:
3741 spin_lock_bh(&mvm->time_event_lock);
3742 iwl_mvm_te_clear_data(mvm, te_data);
3743 spin_unlock_bh(&mvm->time_event_lock);
3744 }
3745
3746 return res;
3747 }
3748
3749 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3750 struct ieee80211_vif *vif,
3751 struct ieee80211_channel *channel,
3752 int duration,
3753 enum ieee80211_roc_type type)
3754 {
3755 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3756 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3757 struct cfg80211_chan_def chandef;
3758 struct iwl_mvm_phy_ctxt *phy_ctxt;
3759 int ret, i;
3760
3761 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3762 duration, type);
3763
3764 /*
3765 * Flush the done work, just in case it's still pending, so that
3766 * the work it does can complete and we can accept new frames.
3767 */
3768 flush_work(&mvm->roc_done_wk);
3769
3770 mutex_lock(&mvm->mutex);
3771
3772 switch (vif->type) {
3773 case NL80211_IFTYPE_STATION:
3774 if (fw_has_capa(&mvm->fw->ucode_capa,
3775 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3776 /* Use aux roc framework (HS20) */
3777 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3778 vif, duration);
3779 goto out_unlock;
3780 }
3781 IWL_ERR(mvm, "hotspot not supported\n");
3782 ret = -EINVAL;
3783 goto out_unlock;
3784 case NL80211_IFTYPE_P2P_DEVICE:
3785 /* handle below */
3786 break;
3787 default:
3788 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3789 ret = -EINVAL;
3790 goto out_unlock;
3791 }
3792
3793 for (i = 0; i < NUM_PHY_CTX; i++) {
3794 phy_ctxt = &mvm->phy_ctxts[i];
3795 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3796 continue;
3797
3798 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3799 /*
3800 * Unbind the P2P_DEVICE from the current PHY context,
3801 * and if the PHY context is not used remove it.
3802 */
3803 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3804 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3805 goto out_unlock;
3806
3807 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3808
3809 /* Bind the P2P_DEVICE to the current PHY Context */
3810 mvmvif->phy_ctxt = phy_ctxt;
3811
3812 ret = iwl_mvm_binding_add_vif(mvm, vif);
3813 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3814 goto out_unlock;
3815
3816 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3817 goto schedule_time_event;
3818 }
3819 }
3820
3821 /* Need to update the PHY context only if the ROC channel changed */
3822 if (channel == mvmvif->phy_ctxt->channel)
3823 goto schedule_time_event;
3824
3825 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3826
3827 /*
3828 * Change the PHY context configuration as it is currently referenced
3829 * only by the P2P Device MAC
3830 */
3831 if (mvmvif->phy_ctxt->ref == 1) {
3832 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3833 &chandef, 1, 1);
3834 if (ret)
3835 goto out_unlock;
3836 } else {
3837 /*
3838 * The PHY context is shared with other MACs. Need to remove the
3839 * P2P Device from the binding, allocate an new PHY context and
3840 * create a new binding
3841 */
3842 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3843 if (!phy_ctxt) {
3844 ret = -ENOSPC;
3845 goto out_unlock;
3846 }
3847
3848 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3849 1, 1);
3850 if (ret) {
3851 IWL_ERR(mvm, "Failed to change PHY context\n");
3852 goto out_unlock;
3853 }
3854
3855 /* Unbind the P2P_DEVICE from the current PHY context */
3856 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3857 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3858 goto out_unlock;
3859
3860 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3861
3862 /* Bind the P2P_DEVICE to the new allocated PHY context */
3863 mvmvif->phy_ctxt = phy_ctxt;
3864
3865 ret = iwl_mvm_binding_add_vif(mvm, vif);
3866 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3867 goto out_unlock;
3868
3869 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3870 }
3871
3872 schedule_time_event:
3873 /* Schedule the time events */
3874 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3875
3876 out_unlock:
3877 mutex_unlock(&mvm->mutex);
3878 IWL_DEBUG_MAC80211(mvm, "leave\n");
3879 return ret;
3880 }
3881
3882 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw,
3883 struct ieee80211_vif *vif)
3884 {
3885 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3886
3887 IWL_DEBUG_MAC80211(mvm, "enter\n");
3888
3889 mutex_lock(&mvm->mutex);
3890 iwl_mvm_stop_roc(mvm, vif);
3891 mutex_unlock(&mvm->mutex);
3892
3893 IWL_DEBUG_MAC80211(mvm, "leave\n");
3894 return 0;
3895 }
3896
3897 struct iwl_mvm_ftm_responder_iter_data {
3898 bool responder;
3899 struct ieee80211_chanctx_conf *ctx;
3900 };
3901
3902 static void iwl_mvm_ftm_responder_chanctx_iter(void *_data, u8 *mac,
3903 struct ieee80211_vif *vif)
3904 {
3905 struct iwl_mvm_ftm_responder_iter_data *data = _data;
3906
3907 if (rcu_access_pointer(vif->chanctx_conf) == data->ctx &&
3908 vif->type == NL80211_IFTYPE_AP && vif->bss_conf.ftmr_params)
3909 data->responder = true;
3910 }
3911
3912 static bool iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm *mvm,
3913 struct ieee80211_chanctx_conf *ctx)
3914 {
3915 struct iwl_mvm_ftm_responder_iter_data data = {
3916 .responder = false,
3917 .ctx = ctx,
3918 };
3919
3920 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
3921 IEEE80211_IFACE_ITER_NORMAL,
3922 iwl_mvm_ftm_responder_chanctx_iter,
3923 &data);
3924 return data.responder;
3925 }
3926
3927 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3928 struct ieee80211_chanctx_conf *ctx)
3929 {
3930 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3931 struct iwl_mvm_phy_ctxt *phy_ctxt;
3932 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx);
3933 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def;
3934 int ret;
3935
3936 lockdep_assert_held(&mvm->mutex);
3937
3938 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3939
3940 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3941 if (!phy_ctxt) {
3942 ret = -ENOSPC;
3943 goto out;
3944 }
3945
3946 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def,
3947 ctx->rx_chains_static,
3948 ctx->rx_chains_dynamic);
3949 if (ret) {
3950 IWL_ERR(mvm, "Failed to add PHY context\n");
3951 goto out;
3952 }
3953
3954 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3955 *phy_ctxt_id = phy_ctxt->id;
3956 out:
3957 return ret;
3958 }
3959
3960 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3961 struct ieee80211_chanctx_conf *ctx)
3962 {
3963 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3964 int ret;
3965
3966 mutex_lock(&mvm->mutex);
3967 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3968 mutex_unlock(&mvm->mutex);
3969
3970 return ret;
3971 }
3972
3973 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3974 struct ieee80211_chanctx_conf *ctx)
3975 {
3976 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3977 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3978
3979 lockdep_assert_held(&mvm->mutex);
3980
3981 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3982 }
3983
3984 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3985 struct ieee80211_chanctx_conf *ctx)
3986 {
3987 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3988
3989 mutex_lock(&mvm->mutex);
3990 __iwl_mvm_remove_chanctx(mvm, ctx);
3991 mutex_unlock(&mvm->mutex);
3992 }
3993
3994 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3995 struct ieee80211_chanctx_conf *ctx,
3996 u32 changed)
3997 {
3998 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3999 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
4000 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
4001 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx);
4002 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def;
4003
4004 if (WARN_ONCE((phy_ctxt->ref > 1) &&
4005 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
4006 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
4007 IEEE80211_CHANCTX_CHANGE_RADAR |
4008 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
4009 "Cannot change PHY. Ref=%d, changed=0x%X\n",
4010 phy_ctxt->ref, changed))
4011 return;
4012
4013 mutex_lock(&mvm->mutex);
4014
4015 /* we are only changing the min_width, may be a noop */
4016 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) {
4017 if (phy_ctxt->width == def->width)
4018 goto out_unlock;
4019
4020 /* we are just toggling between 20_NOHT and 20 */
4021 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 &&
4022 def->width <= NL80211_CHAN_WIDTH_20)
4023 goto out_unlock;
4024 }
4025
4026 iwl_mvm_bt_coex_vif_change(mvm);
4027 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def,
4028 ctx->rx_chains_static,
4029 ctx->rx_chains_dynamic);
4030
4031 out_unlock:
4032 mutex_unlock(&mvm->mutex);
4033 }
4034
4035 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
4036 struct ieee80211_vif *vif,
4037 struct ieee80211_chanctx_conf *ctx,
4038 bool switching_chanctx)
4039 {
4040 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
4041 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
4042 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4043 int ret;
4044
4045 lockdep_assert_held(&mvm->mutex);
4046
4047 mvmvif->phy_ctxt = phy_ctxt;
4048
4049 switch (vif->type) {
4050 case NL80211_IFTYPE_AP:
4051 /* only needed if we're switching chanctx (i.e. during CSA) */
4052 if (switching_chanctx) {
4053 mvmvif->ap_ibss_active = true;
4054 break;
4055 }
4056 /* fall through */
4057 case NL80211_IFTYPE_ADHOC:
4058 /*
4059 * The AP binding flow is handled as part of the start_ap flow
4060 * (in bss_info_changed), similarly for IBSS.
4061 */
4062 ret = 0;
4063 goto out;
4064 case NL80211_IFTYPE_STATION:
4065 mvmvif->csa_bcn_pending = false;
4066 break;
4067 case NL80211_IFTYPE_MONITOR:
4068 /* always disable PS when a monitor interface is active */
4069 mvmvif->ps_disabled = true;
4070 break;
4071 default:
4072 ret = -EINVAL;
4073 goto out;
4074 }
4075
4076 ret = iwl_mvm_binding_add_vif(mvm, vif);
4077 if (ret)
4078 goto out;
4079
4080 /*
4081 * Power state must be updated before quotas,
4082 * otherwise fw will complain.
4083 */
4084 iwl_mvm_power_update_mac(mvm);
4085
4086 /* Setting the quota at this stage is only required for monitor
4087 * interfaces. For the other types, the bss_info changed flow
4088 * will handle quota settings.
4089 */
4090 if (vif->type == NL80211_IFTYPE_MONITOR) {
4091 mvmvif->monitor_active = true;
4092 ret = iwl_mvm_update_quotas(mvm, false, NULL);
4093 if (ret)
4094 goto out_remove_binding;
4095
4096 ret = iwl_mvm_add_snif_sta(mvm, vif);
4097 if (ret)
4098 goto out_remove_binding;
4099
4100 }
4101
4102 /* Handle binding during CSA */
4103 if (vif->type == NL80211_IFTYPE_AP) {
4104 iwl_mvm_update_quotas(mvm, false, NULL);
4105 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
4106 }
4107
4108 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
4109 mvmvif->csa_bcn_pending = true;
4110
4111 if (!fw_has_capa(&mvm->fw->ucode_capa,
4112 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
4113 u32 duration = 3 * vif->bss_conf.beacon_int;
4114
4115 /* Protect the session to make sure we hear the first
4116 * beacon on the new channel.
4117 */
4118 iwl_mvm_protect_session(mvm, vif, duration, duration,
4119 vif->bss_conf.beacon_int / 2,
4120 true);
4121 }
4122
4123 iwl_mvm_update_quotas(mvm, false, NULL);
4124 }
4125
4126 goto out;
4127
4128 out_remove_binding:
4129 iwl_mvm_binding_remove_vif(mvm, vif);
4130 iwl_mvm_power_update_mac(mvm);
4131 out:
4132 if (ret)
4133 mvmvif->phy_ctxt = NULL;
4134 return ret;
4135 }
4136 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
4137 struct ieee80211_vif *vif,
4138 struct ieee80211_chanctx_conf *ctx)
4139 {
4140 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4141 int ret;
4142
4143 mutex_lock(&mvm->mutex);
4144 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
4145 mutex_unlock(&mvm->mutex);
4146
4147 return ret;
4148 }
4149
4150 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
4151 struct ieee80211_vif *vif,
4152 struct ieee80211_chanctx_conf *ctx,
4153 bool switching_chanctx)
4154 {
4155 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4156 struct ieee80211_vif *disabled_vif = NULL;
4157
4158 lockdep_assert_held(&mvm->mutex);
4159
4160 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
4161
4162 switch (vif->type) {
4163 case NL80211_IFTYPE_ADHOC:
4164 goto out;
4165 case NL80211_IFTYPE_MONITOR:
4166 mvmvif->monitor_active = false;
4167 mvmvif->ps_disabled = false;
4168 iwl_mvm_rm_snif_sta(mvm, vif);
4169 break;
4170 case NL80211_IFTYPE_AP:
4171 /* This part is triggered only during CSA */
4172 if (!switching_chanctx || !mvmvif->ap_ibss_active)
4173 goto out;
4174
4175 mvmvif->csa_countdown = false;
4176
4177 /* Set CS bit on all the stations */
4178 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
4179
4180 /* Save blocked iface, the timeout is set on the next beacon */
4181 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
4182
4183 mvmvif->ap_ibss_active = false;
4184 break;
4185 case NL80211_IFTYPE_STATION:
4186 if (!switching_chanctx)
4187 break;
4188
4189 disabled_vif = vif;
4190
4191 if (!fw_has_capa(&mvm->fw->ucode_capa,
4192 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
4193 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
4194 break;
4195 default:
4196 break;
4197 }
4198
4199 iwl_mvm_update_quotas(mvm, false, disabled_vif);
4200 iwl_mvm_binding_remove_vif(mvm, vif);
4201
4202 out:
4203 mvmvif->phy_ctxt = NULL;
4204 iwl_mvm_power_update_mac(mvm);
4205 }
4206
4207 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
4208 struct ieee80211_vif *vif,
4209 struct ieee80211_chanctx_conf *ctx)
4210 {
4211 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4212
4213 mutex_lock(&mvm->mutex);
4214 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
4215 mutex_unlock(&mvm->mutex);
4216 }
4217
4218 static int
4219 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
4220 struct ieee80211_vif_chanctx_switch *vifs)
4221 {
4222 int ret;
4223
4224 mutex_lock(&mvm->mutex);
4225 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
4226 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
4227
4228 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
4229 if (ret) {
4230 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
4231 goto out_reassign;
4232 }
4233
4234 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
4235 true);
4236 if (ret) {
4237 IWL_ERR(mvm,
4238 "failed to assign new_ctx during channel switch\n");
4239 goto out_remove;
4240 }
4241
4242 /* we don't support TDLS during DCM - can be caused by channel switch */
4243 if (iwl_mvm_phy_ctx_count(mvm) > 1)
4244 iwl_mvm_teardown_tdls_peers(mvm);
4245
4246 goto out;
4247
4248 out_remove:
4249 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
4250
4251 out_reassign:
4252 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
4253 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
4254 goto out_restart;
4255 }
4256
4257 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
4258 true)) {
4259 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
4260 goto out_restart;
4261 }
4262
4263 goto out;
4264
4265 out_restart:
4266 /* things keep failing, better restart the hw */
4267 iwl_mvm_nic_restart(mvm, false);
4268
4269 out:
4270 mutex_unlock(&mvm->mutex);
4271
4272 return ret;
4273 }
4274
4275 static int
4276 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
4277 struct ieee80211_vif_chanctx_switch *vifs)
4278 {
4279 int ret;
4280
4281 mutex_lock(&mvm->mutex);
4282 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
4283
4284 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
4285 true);
4286 if (ret) {
4287 IWL_ERR(mvm,
4288 "failed to assign new_ctx during channel switch\n");
4289 goto out_reassign;
4290 }
4291
4292 goto out;
4293
4294 out_reassign:
4295 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
4296 true)) {
4297 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
4298 goto out_restart;
4299 }
4300
4301 goto out;
4302
4303 out_restart:
4304 /* things keep failing, better restart the hw */
4305 iwl_mvm_nic_restart(mvm, false);
4306
4307 out:
4308 mutex_unlock(&mvm->mutex);
4309
4310 return ret;
4311 }
4312
4313 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
4314 struct ieee80211_vif_chanctx_switch *vifs,
4315 int n_vifs,
4316 enum ieee80211_chanctx_switch_mode mode)
4317 {
4318 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4319 int ret;
4320
4321 /* we only support a single-vif right now */
4322 if (n_vifs > 1)
4323 return -EOPNOTSUPP;
4324
4325 switch (mode) {
4326 case CHANCTX_SWMODE_SWAP_CONTEXTS:
4327 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
4328 break;
4329 case CHANCTX_SWMODE_REASSIGN_VIF:
4330 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
4331 break;
4332 default:
4333 ret = -EOPNOTSUPP;
4334 break;
4335 }
4336
4337 return ret;
4338 }
4339
4340 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
4341 {
4342 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4343
4344 return mvm->ibss_manager;
4345 }
4346
4347 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
4348 struct ieee80211_sta *sta,
4349 bool set)
4350 {
4351 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4352 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4353
4354 if (!mvm_sta || !mvm_sta->vif) {
4355 IWL_ERR(mvm, "Station is not associated to a vif\n");
4356 return -EINVAL;
4357 }
4358
4359 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
4360 }
4361
4362 #ifdef CONFIG_NL80211_TESTMODE
4363 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
4364 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
4365 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
4366 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
4367 };
4368
4369 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
4370 struct ieee80211_vif *vif,
4371 void *data, int len)
4372 {
4373 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
4374 int err;
4375 u32 noa_duration;
4376
4377 err = nla_parse_deprecated(tb, IWL_MVM_TM_ATTR_MAX, data, len,
4378 iwl_mvm_tm_policy, NULL);
4379 if (err)
4380 return err;
4381
4382 if (!tb[IWL_MVM_TM_ATTR_CMD])
4383 return -EINVAL;
4384
4385 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
4386 case IWL_MVM_TM_CMD_SET_NOA:
4387 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
4388 !vif->bss_conf.enable_beacon ||
4389 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
4390 return -EINVAL;
4391
4392 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
4393 if (noa_duration >= vif->bss_conf.beacon_int)
4394 return -EINVAL;
4395
4396 mvm->noa_duration = noa_duration;
4397 mvm->noa_vif = vif;
4398
4399 return iwl_mvm_update_quotas(mvm, true, NULL);
4400 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
4401 /* must be associated client vif - ignore authorized */
4402 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
4403 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
4404 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
4405 return -EINVAL;
4406
4407 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
4408 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
4409 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4410 }
4411
4412 return -EOPNOTSUPP;
4413 }
4414
4415 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
4416 struct ieee80211_vif *vif,
4417 void *data, int len)
4418 {
4419 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4420 int err;
4421
4422 mutex_lock(&mvm->mutex);
4423 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
4424 mutex_unlock(&mvm->mutex);
4425
4426 return err;
4427 }
4428 #endif
4429
4430 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
4431 struct ieee80211_vif *vif,
4432 struct ieee80211_channel_switch *chsw)
4433 {
4434 /* By implementing this operation, we prevent mac80211 from
4435 * starting its own channel switch timer, so that we can call
4436 * ieee80211_chswitch_done() ourselves at the right time
4437 * (which is when the absence time event starts).
4438 */
4439
4440 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
4441 "dummy channel switch op\n");
4442 }
4443
4444 static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm,
4445 struct ieee80211_vif *vif,
4446 struct ieee80211_channel_switch *chsw)
4447 {
4448 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4449 struct iwl_chan_switch_te_cmd cmd = {
4450 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
4451 mvmvif->color)),
4452 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
4453 .tsf = cpu_to_le32(chsw->timestamp),
4454 .cs_count = chsw->count,
4455 .cs_mode = chsw->block_tx,
4456 };
4457
4458 lockdep_assert_held(&mvm->mutex);
4459
4460 if (chsw->delay)
4461 cmd.cs_delayed_bcn_count =
4462 DIV_ROUND_UP(chsw->delay, vif->bss_conf.beacon_int);
4463
4464 return iwl_mvm_send_cmd_pdu(mvm,
4465 WIDE_ID(MAC_CONF_GROUP,
4466 CHANNEL_SWITCH_TIME_EVENT_CMD),
4467 0, sizeof(cmd), &cmd);
4468 }
4469
4470 static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm,
4471 struct ieee80211_vif *vif,
4472 struct ieee80211_channel_switch *chsw)
4473 {
4474 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4475 u32 apply_time;
4476
4477 /* Schedule the time event to a bit before beacon 1,
4478 * to make sure we're in the new channel when the
4479 * GO/AP arrives. In case count <= 1 immediately schedule the
4480 * TE (this might result with some packet loss or connection
4481 * loss).
4482 */
4483 if (chsw->count <= 1)
4484 apply_time = 0;
4485 else
4486 apply_time = chsw->device_timestamp +
4487 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
4488 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
4489
4490 if (chsw->block_tx)
4491 iwl_mvm_csa_client_absent(mvm, vif);
4492
4493 if (mvmvif->bf_data.bf_enabled) {
4494 int ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4495
4496 if (ret)
4497 return ret;
4498 }
4499
4500 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
4501 apply_time);
4502
4503 return 0;
4504 }
4505
4506 #define IWL_MAX_CSA_BLOCK_TX 1500
4507 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
4508 struct ieee80211_vif *vif,
4509 struct ieee80211_channel_switch *chsw)
4510 {
4511 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4512 struct ieee80211_vif *csa_vif;
4513 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4514 int ret;
4515
4516 mutex_lock(&mvm->mutex);
4517
4518 mvmvif->csa_failed = false;
4519
4520 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
4521 chsw->chandef.center_freq1);
4522
4523 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt,
4524 ieee80211_vif_to_wdev(vif),
4525 FW_DBG_TRIGGER_CHANNEL_SWITCH);
4526
4527 switch (vif->type) {
4528 case NL80211_IFTYPE_AP:
4529 csa_vif =
4530 rcu_dereference_protected(mvm->csa_vif,
4531 lockdep_is_held(&mvm->mutex));
4532 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
4533 "Another CSA is already in progress")) {
4534 ret = -EBUSY;
4535 goto out_unlock;
4536 }
4537
4538 /* we still didn't unblock tx. prevent new CS meanwhile */
4539 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
4540 lockdep_is_held(&mvm->mutex))) {
4541 ret = -EBUSY;
4542 goto out_unlock;
4543 }
4544
4545 rcu_assign_pointer(mvm->csa_vif, vif);
4546
4547 if (WARN_ONCE(mvmvif->csa_countdown,
4548 "Previous CSA countdown didn't complete")) {
4549 ret = -EBUSY;
4550 goto out_unlock;
4551 }
4552
4553 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
4554
4555 break;
4556 case NL80211_IFTYPE_STATION:
4557 if (chsw->block_tx) {
4558 /*
4559 * In case of undetermined / long time with immediate
4560 * quiet monitor status to gracefully disconnect
4561 */
4562 if (!chsw->count ||
4563 chsw->count * vif->bss_conf.beacon_int >
4564 IWL_MAX_CSA_BLOCK_TX)
4565 schedule_delayed_work(&mvmvif->csa_work,
4566 msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX));
4567 }
4568
4569 if (!fw_has_capa(&mvm->fw->ucode_capa,
4570 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
4571 ret = iwl_mvm_old_pre_chan_sw_sta(mvm, vif, chsw);
4572 if (ret)
4573 goto out_unlock;
4574 } else {
4575 iwl_mvm_schedule_client_csa(mvm, vif, chsw);
4576 }
4577
4578 mvmvif->csa_count = chsw->count;
4579 mvmvif->csa_misbehave = false;
4580 break;
4581 default:
4582 break;
4583 }
4584
4585 mvmvif->ps_disabled = true;
4586
4587 ret = iwl_mvm_power_update_ps(mvm);
4588 if (ret)
4589 goto out_unlock;
4590
4591 /* we won't be on this channel any longer */
4592 iwl_mvm_teardown_tdls_peers(mvm);
4593
4594 out_unlock:
4595 mutex_unlock(&mvm->mutex);
4596
4597 return ret;
4598 }
4599
4600 static void iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw *hw,
4601 struct ieee80211_vif *vif,
4602 struct ieee80211_channel_switch *chsw)
4603 {
4604 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4605 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4606 struct iwl_chan_switch_te_cmd cmd = {
4607 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
4608 mvmvif->color)),
4609 .action = cpu_to_le32(FW_CTXT_ACTION_MODIFY),
4610 .tsf = cpu_to_le32(chsw->timestamp),
4611 .cs_count = chsw->count,
4612 .cs_mode = chsw->block_tx,
4613 };
4614
4615 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CS_MODIFY))
4616 return;
4617
4618 if (chsw->count >= mvmvif->csa_count && chsw->block_tx) {
4619 if (mvmvif->csa_misbehave) {
4620 /* Second time, give up on this AP*/
4621 iwl_mvm_abort_channel_switch(hw, vif);
4622 ieee80211_chswitch_done(vif, false);
4623 mvmvif->csa_misbehave = false;
4624 return;
4625 }
4626 mvmvif->csa_misbehave = true;
4627 }
4628 mvmvif->csa_count = chsw->count;
4629
4630 IWL_DEBUG_MAC80211(mvm, "Modify CSA on mac %d\n", mvmvif->id);
4631
4632 WARN_ON(iwl_mvm_send_cmd_pdu(mvm,
4633 WIDE_ID(MAC_CONF_GROUP,
4634 CHANNEL_SWITCH_TIME_EVENT_CMD),
4635 CMD_ASYNC, sizeof(cmd), &cmd));
4636 }
4637
4638 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
4639 {
4640 int i;
4641
4642 if (!iwl_mvm_has_new_tx_api(mvm)) {
4643 if (drop) {
4644 mutex_lock(&mvm->mutex);
4645 iwl_mvm_flush_tx_path(mvm,
4646 iwl_mvm_flushable_queues(mvm) & queues, 0);
4647 mutex_unlock(&mvm->mutex);
4648 } else {
4649 iwl_trans_wait_tx_queues_empty(mvm->trans, queues);
4650 }
4651 return;
4652 }
4653
4654 mutex_lock(&mvm->mutex);
4655 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4656 struct ieee80211_sta *sta;
4657
4658 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4659 lockdep_is_held(&mvm->mutex));
4660 if (IS_ERR_OR_NULL(sta))
4661 continue;
4662
4663 if (drop)
4664 iwl_mvm_flush_sta_tids(mvm, i, 0xFFFF, 0);
4665 else
4666 iwl_mvm_wait_sta_queues_empty(mvm,
4667 iwl_mvm_sta_from_mac80211(sta));
4668 }
4669 mutex_unlock(&mvm->mutex);
4670 }
4671
4672 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
4673 struct ieee80211_vif *vif, u32 queues, bool drop)
4674 {
4675 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4676 struct iwl_mvm_vif *mvmvif;
4677 struct iwl_mvm_sta *mvmsta;
4678 struct ieee80211_sta *sta;
4679 int i;
4680 u32 msk = 0;
4681
4682 if (!vif) {
4683 iwl_mvm_flush_no_vif(mvm, queues, drop);
4684 return;
4685 }
4686
4687 if (vif->type != NL80211_IFTYPE_STATION)
4688 return;
4689
4690 /* Make sure we're done with the deferred traffic before flushing */
4691 flush_work(&mvm->add_stream_wk);
4692
4693 mutex_lock(&mvm->mutex);
4694 mvmvif = iwl_mvm_vif_from_mac80211(vif);
4695
4696 /* flush the AP-station and all TDLS peers */
4697 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4698 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4699 lockdep_is_held(&mvm->mutex));
4700 if (IS_ERR_OR_NULL(sta))
4701 continue;
4702
4703 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4704 if (mvmsta->vif != vif)
4705 continue;
4706
4707 /* make sure only TDLS peers or the AP are flushed */
4708 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4709
4710 if (drop) {
4711 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
4712 IWL_ERR(mvm, "flush request fail\n");
4713 } else {
4714 msk |= mvmsta->tfd_queue_msk;
4715 if (iwl_mvm_has_new_tx_api(mvm))
4716 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4717 }
4718 }
4719
4720 mutex_unlock(&mvm->mutex);
4721
4722 /* this can take a while, and we may need/want other operations
4723 * to succeed while doing this, so do it without the mutex held
4724 */
4725 if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4726 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4727 }
4728
4729 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4730 struct survey_info *survey)
4731 {
4732 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4733 int ret;
4734
4735 memset(survey, 0, sizeof(*survey));
4736
4737 /* only support global statistics right now */
4738 if (idx != 0)
4739 return -ENOENT;
4740
4741 if (!fw_has_capa(&mvm->fw->ucode_capa,
4742 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4743 return -ENOENT;
4744
4745 mutex_lock(&mvm->mutex);
4746
4747 if (iwl_mvm_firmware_running(mvm)) {
4748 ret = iwl_mvm_request_statistics(mvm, false);
4749 if (ret)
4750 goto out;
4751 }
4752
4753 survey->filled = SURVEY_INFO_TIME |
4754 SURVEY_INFO_TIME_RX |
4755 SURVEY_INFO_TIME_TX |
4756 SURVEY_INFO_TIME_SCAN;
4757 survey->time = mvm->accu_radio_stats.on_time_rf +
4758 mvm->radio_stats.on_time_rf;
4759 do_div(survey->time, USEC_PER_MSEC);
4760
4761 survey->time_rx = mvm->accu_radio_stats.rx_time +
4762 mvm->radio_stats.rx_time;
4763 do_div(survey->time_rx, USEC_PER_MSEC);
4764
4765 survey->time_tx = mvm->accu_radio_stats.tx_time +
4766 mvm->radio_stats.tx_time;
4767 do_div(survey->time_tx, USEC_PER_MSEC);
4768
4769 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4770 mvm->radio_stats.on_time_scan;
4771 do_div(survey->time_scan, USEC_PER_MSEC);
4772
4773 ret = 0;
4774 out:
4775 mutex_unlock(&mvm->mutex);
4776 return ret;
4777 }
4778
4779 static void iwl_mvm_set_sta_rate(u32 rate_n_flags, struct rate_info *rinfo)
4780 {
4781 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
4782 case RATE_MCS_CHAN_WIDTH_20:
4783 rinfo->bw = RATE_INFO_BW_20;
4784 break;
4785 case RATE_MCS_CHAN_WIDTH_40:
4786 rinfo->bw = RATE_INFO_BW_40;
4787 break;
4788 case RATE_MCS_CHAN_WIDTH_80:
4789 rinfo->bw = RATE_INFO_BW_80;
4790 break;
4791 case RATE_MCS_CHAN_WIDTH_160:
4792 rinfo->bw = RATE_INFO_BW_160;
4793 break;
4794 }
4795
4796 if (rate_n_flags & RATE_MCS_HT_MSK) {
4797 rinfo->flags |= RATE_INFO_FLAGS_MCS;
4798 rinfo->mcs = u32_get_bits(rate_n_flags, RATE_HT_MCS_INDEX_MSK);
4799 rinfo->nss = u32_get_bits(rate_n_flags,
4800 RATE_HT_MCS_NSS_MSK) + 1;
4801 if (rate_n_flags & RATE_MCS_SGI_MSK)
4802 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
4803 } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
4804 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
4805 rinfo->mcs = u32_get_bits(rate_n_flags,
4806 RATE_VHT_MCS_RATE_CODE_MSK);
4807 rinfo->nss = u32_get_bits(rate_n_flags,
4808 RATE_VHT_MCS_NSS_MSK) + 1;
4809 if (rate_n_flags & RATE_MCS_SGI_MSK)
4810 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
4811 } else if (rate_n_flags & RATE_MCS_HE_MSK) {
4812 u32 gi_ltf = u32_get_bits(rate_n_flags,
4813 RATE_MCS_HE_GI_LTF_MSK);
4814
4815 rinfo->flags |= RATE_INFO_FLAGS_HE_MCS;
4816 rinfo->mcs = u32_get_bits(rate_n_flags,
4817 RATE_VHT_MCS_RATE_CODE_MSK);
4818 rinfo->nss = u32_get_bits(rate_n_flags,
4819 RATE_VHT_MCS_NSS_MSK) + 1;
4820
4821 if (rate_n_flags & RATE_MCS_HE_106T_MSK) {
4822 rinfo->bw = RATE_INFO_BW_HE_RU;
4823 rinfo->he_ru_alloc = NL80211_RATE_INFO_HE_RU_ALLOC_106;
4824 }
4825
4826 switch (rate_n_flags & RATE_MCS_HE_TYPE_MSK) {
4827 case RATE_MCS_HE_TYPE_SU:
4828 case RATE_MCS_HE_TYPE_EXT_SU:
4829 if (gi_ltf == 0 || gi_ltf == 1)
4830 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
4831 else if (gi_ltf == 2)
4832 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
4833 else if (rate_n_flags & RATE_MCS_SGI_MSK)
4834 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
4835 else
4836 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
4837 break;
4838 case RATE_MCS_HE_TYPE_MU:
4839 if (gi_ltf == 0 || gi_ltf == 1)
4840 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
4841 else if (gi_ltf == 2)
4842 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
4843 else
4844 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
4845 break;
4846 case RATE_MCS_HE_TYPE_TRIG:
4847 if (gi_ltf == 0 || gi_ltf == 1)
4848 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
4849 else
4850 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
4851 break;
4852 }
4853
4854 if (rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK)
4855 rinfo->he_dcm = 1;
4856 } else {
4857 switch (u32_get_bits(rate_n_flags, RATE_LEGACY_RATE_MSK)) {
4858 case IWL_RATE_1M_PLCP:
4859 rinfo->legacy = 10;
4860 break;
4861 case IWL_RATE_2M_PLCP:
4862 rinfo->legacy = 20;
4863 break;
4864 case IWL_RATE_5M_PLCP:
4865 rinfo->legacy = 55;
4866 break;
4867 case IWL_RATE_11M_PLCP:
4868 rinfo->legacy = 110;
4869 break;
4870 case IWL_RATE_6M_PLCP:
4871 rinfo->legacy = 60;
4872 break;
4873 case IWL_RATE_9M_PLCP:
4874 rinfo->legacy = 90;
4875 break;
4876 case IWL_RATE_12M_PLCP:
4877 rinfo->legacy = 120;
4878 break;
4879 case IWL_RATE_18M_PLCP:
4880 rinfo->legacy = 180;
4881 break;
4882 case IWL_RATE_24M_PLCP:
4883 rinfo->legacy = 240;
4884 break;
4885 case IWL_RATE_36M_PLCP:
4886 rinfo->legacy = 360;
4887 break;
4888 case IWL_RATE_48M_PLCP:
4889 rinfo->legacy = 480;
4890 break;
4891 case IWL_RATE_54M_PLCP:
4892 rinfo->legacy = 540;
4893 break;
4894 }
4895 }
4896 }
4897
4898 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4899 struct ieee80211_vif *vif,
4900 struct ieee80211_sta *sta,
4901 struct station_info *sinfo)
4902 {
4903 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4904 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4905 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4906
4907 if (mvmsta->avg_energy) {
4908 sinfo->signal_avg = mvmsta->avg_energy;
4909 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG);
4910 }
4911
4912 if (iwl_mvm_has_tlc_offload(mvm)) {
4913 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
4914
4915 iwl_mvm_set_sta_rate(lq_sta->last_rate_n_flags, &sinfo->txrate);
4916 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
4917 }
4918
4919 /* if beacon filtering isn't on mac80211 does it anyway */
4920 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4921 return;
4922
4923 if (!vif->bss_conf.assoc)
4924 return;
4925
4926 mutex_lock(&mvm->mutex);
4927
4928 if (mvmvif->ap_sta_id != mvmsta->sta_id)
4929 goto unlock;
4930
4931 if (iwl_mvm_request_statistics(mvm, false))
4932 goto unlock;
4933
4934 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4935 mvmvif->beacon_stats.accu_num_beacons;
4936 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX);
4937 if (mvmvif->beacon_stats.avg_signal) {
4938 /* firmware only reports a value after RXing a few beacons */
4939 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4940 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4941 }
4942 unlock:
4943 mutex_unlock(&mvm->mutex);
4944 }
4945
4946 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4947 struct ieee80211_vif *vif,
4948 const struct ieee80211_event *event)
4949 {
4950 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \
4951 do { \
4952 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \
4953 break; \
4954 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \
4955 } while (0)
4956
4957 struct iwl_fw_dbg_trigger_tlv *trig;
4958 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4959
4960 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
4961 FW_DBG_TRIGGER_MLME);
4962 if (!trig)
4963 return;
4964
4965 trig_mlme = (void *)trig->data;
4966
4967 if (event->u.mlme.data == ASSOC_EVENT) {
4968 if (event->u.mlme.status == MLME_DENIED)
4969 CHECK_MLME_TRIGGER(stop_assoc_denied,
4970 "DENIED ASSOC: reason %d",
4971 event->u.mlme.reason);
4972 else if (event->u.mlme.status == MLME_TIMEOUT)
4973 CHECK_MLME_TRIGGER(stop_assoc_timeout,
4974 "ASSOC TIMEOUT");
4975 } else if (event->u.mlme.data == AUTH_EVENT) {
4976 if (event->u.mlme.status == MLME_DENIED)
4977 CHECK_MLME_TRIGGER(stop_auth_denied,
4978 "DENIED AUTH: reason %d",
4979 event->u.mlme.reason);
4980 else if (event->u.mlme.status == MLME_TIMEOUT)
4981 CHECK_MLME_TRIGGER(stop_auth_timeout,
4982 "AUTH TIMEOUT");
4983 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4984 CHECK_MLME_TRIGGER(stop_rx_deauth,
4985 "DEAUTH RX %d", event->u.mlme.reason);
4986 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4987 CHECK_MLME_TRIGGER(stop_tx_deauth,
4988 "DEAUTH TX %d", event->u.mlme.reason);
4989 }
4990 #undef CHECK_MLME_TRIGGER
4991 }
4992
4993 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4994 struct ieee80211_vif *vif,
4995 const struct ieee80211_event *event)
4996 {
4997 struct iwl_fw_dbg_trigger_tlv *trig;
4998 struct iwl_fw_dbg_trigger_ba *ba_trig;
4999
5000 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
5001 FW_DBG_TRIGGER_BA);
5002 if (!trig)
5003 return;
5004
5005 ba_trig = (void *)trig->data;
5006
5007 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
5008 return;
5009
5010 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
5011 "BAR received from %pM, tid %d, ssn %d",
5012 event->u.ba.sta->addr, event->u.ba.tid,
5013 event->u.ba.ssn);
5014 }
5015
5016 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
5017 struct ieee80211_vif *vif,
5018 const struct ieee80211_event *event)
5019 {
5020 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5021
5022 switch (event->type) {
5023 case MLME_EVENT:
5024 iwl_mvm_event_mlme_callback(mvm, vif, event);
5025 break;
5026 case BAR_RX_EVENT:
5027 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
5028 break;
5029 case BA_FRAME_TIMEOUT:
5030 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta,
5031 event->u.ba.tid);
5032 break;
5033 default:
5034 break;
5035 }
5036 }
5037
5038 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
5039 struct iwl_mvm_internal_rxq_notif *notif,
5040 u32 size)
5041 {
5042 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
5043 int ret;
5044
5045
5046 if (!iwl_mvm_has_new_rx_api(mvm))
5047 return;
5048
5049 if (notif->sync) {
5050 notif->cookie = mvm->queue_sync_cookie;
5051 atomic_set(&mvm->queue_sync_counter,
5052 mvm->trans->num_rx_queues);
5053 }
5054
5055 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif,
5056 size, !notif->sync);
5057 if (ret) {
5058 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
5059 goto out;
5060 }
5061
5062 if (notif->sync) {
5063 lockdep_assert_held(&mvm->mutex);
5064 ret = wait_event_timeout(mvm->rx_sync_waitq,
5065 atomic_read(&mvm->queue_sync_counter) == 0 ||
5066 iwl_mvm_is_radio_killed(mvm),
5067 HZ);
5068 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
5069 }
5070
5071 out:
5072 atomic_set(&mvm->queue_sync_counter, 0);
5073 if (notif->sync)
5074 mvm->queue_sync_cookie++;
5075 }
5076
5077 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
5078 {
5079 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5080 struct iwl_mvm_internal_rxq_notif data = {
5081 .type = IWL_MVM_RXQ_EMPTY,
5082 .sync = 1,
5083 };
5084
5085 mutex_lock(&mvm->mutex);
5086 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
5087 mutex_unlock(&mvm->mutex);
5088 }
5089
5090 static int
5091 iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw *hw,
5092 struct ieee80211_vif *vif,
5093 struct cfg80211_ftm_responder_stats *stats)
5094 {
5095 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5096 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
5097
5098 if (vif->p2p || vif->type != NL80211_IFTYPE_AP ||
5099 !mvmvif->ap_ibss_active || !vif->bss_conf.ftm_responder)
5100 return -EINVAL;
5101
5102 mutex_lock(&mvm->mutex);
5103 *stats = mvm->ftm_resp_stats;
5104 mutex_unlock(&mvm->mutex);
5105
5106 stats->filled = BIT(NL80211_FTM_STATS_SUCCESS_NUM) |
5107 BIT(NL80211_FTM_STATS_PARTIAL_NUM) |
5108 BIT(NL80211_FTM_STATS_FAILED_NUM) |
5109 BIT(NL80211_FTM_STATS_ASAP_NUM) |
5110 BIT(NL80211_FTM_STATS_NON_ASAP_NUM) |
5111 BIT(NL80211_FTM_STATS_TOTAL_DURATION_MSEC) |
5112 BIT(NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM) |
5113 BIT(NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM) |
5114 BIT(NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM);
5115
5116 return 0;
5117 }
5118
5119 static int iwl_mvm_start_pmsr(struct ieee80211_hw *hw,
5120 struct ieee80211_vif *vif,
5121 struct cfg80211_pmsr_request *request)
5122 {
5123 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5124 int ret;
5125
5126 mutex_lock(&mvm->mutex);
5127 ret = iwl_mvm_ftm_start(mvm, vif, request);
5128 mutex_unlock(&mvm->mutex);
5129
5130 return ret;
5131 }
5132
5133 static void iwl_mvm_abort_pmsr(struct ieee80211_hw *hw,
5134 struct ieee80211_vif *vif,
5135 struct cfg80211_pmsr_request *request)
5136 {
5137 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5138
5139 mutex_lock(&mvm->mutex);
5140 iwl_mvm_ftm_abort(mvm, request);
5141 mutex_unlock(&mvm->mutex);
5142 }
5143
5144 static bool iwl_mvm_can_hw_csum(struct sk_buff *skb)
5145 {
5146 u8 protocol = ip_hdr(skb)->protocol;
5147
5148 if (!IS_ENABLED(CONFIG_INET))
5149 return false;
5150
5151 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP;
5152 }
5153
5154 static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw,
5155 struct sk_buff *head,
5156 struct sk_buff *skb)
5157 {
5158 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5159
5160 /* For now don't aggregate IPv6 in AMSDU */
5161 if (skb->protocol != htons(ETH_P_IP))
5162 return false;
5163
5164 if (!iwl_mvm_is_csum_supported(mvm))
5165 return true;
5166
5167 return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head);
5168 }
5169
5170 const struct ieee80211_ops iwl_mvm_hw_ops = {
5171 .tx = iwl_mvm_mac_tx,
5172 .wake_tx_queue = iwl_mvm_mac_wake_tx_queue,
5173 .ampdu_action = iwl_mvm_mac_ampdu_action,
5174 .get_antenna = iwl_mvm_op_get_antenna,
5175 .start = iwl_mvm_mac_start,
5176 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
5177 .stop = iwl_mvm_mac_stop,
5178 .add_interface = iwl_mvm_mac_add_interface,
5179 .remove_interface = iwl_mvm_mac_remove_interface,
5180 .config = iwl_mvm_mac_config,
5181 .prepare_multicast = iwl_mvm_prepare_multicast,
5182 .configure_filter = iwl_mvm_configure_filter,
5183 .config_iface_filter = iwl_mvm_config_iface_filter,
5184 .bss_info_changed = iwl_mvm_bss_info_changed,
5185 .hw_scan = iwl_mvm_mac_hw_scan,
5186 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
5187 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
5188 .sta_state = iwl_mvm_mac_sta_state,
5189 .sta_notify = iwl_mvm_mac_sta_notify,
5190 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
5191 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
5192 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
5193 .sta_rc_update = iwl_mvm_sta_rc_update,
5194 .conf_tx = iwl_mvm_mac_conf_tx,
5195 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
5196 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
5197 .flush = iwl_mvm_mac_flush,
5198 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
5199 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
5200 .set_key = iwl_mvm_mac_set_key,
5201 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
5202 .remain_on_channel = iwl_mvm_roc,
5203 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
5204 .add_chanctx = iwl_mvm_add_chanctx,
5205 .remove_chanctx = iwl_mvm_remove_chanctx,
5206 .change_chanctx = iwl_mvm_change_chanctx,
5207 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
5208 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
5209 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
5210
5211 .start_ap = iwl_mvm_start_ap_ibss,
5212 .stop_ap = iwl_mvm_stop_ap_ibss,
5213 .join_ibss = iwl_mvm_start_ap_ibss,
5214 .leave_ibss = iwl_mvm_stop_ap_ibss,
5215
5216 .tx_last_beacon = iwl_mvm_tx_last_beacon,
5217
5218 .set_tim = iwl_mvm_set_tim,
5219
5220 .channel_switch = iwl_mvm_channel_switch,
5221 .pre_channel_switch = iwl_mvm_pre_channel_switch,
5222 .post_channel_switch = iwl_mvm_post_channel_switch,
5223 .abort_channel_switch = iwl_mvm_abort_channel_switch,
5224 .channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon,
5225
5226 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
5227 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
5228 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
5229
5230 .event_callback = iwl_mvm_mac_event_callback,
5231
5232 .sync_rx_queues = iwl_mvm_sync_rx_queues,
5233
5234 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
5235
5236 #ifdef CONFIG_PM_SLEEP
5237 /* look at d3.c */
5238 .suspend = iwl_mvm_suspend,
5239 .resume = iwl_mvm_resume,
5240 .set_wakeup = iwl_mvm_set_wakeup,
5241 .set_rekey_data = iwl_mvm_set_rekey_data,
5242 #if IS_ENABLED(CONFIG_IPV6)
5243 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
5244 #endif
5245 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
5246 #endif
5247 .get_survey = iwl_mvm_mac_get_survey,
5248 .sta_statistics = iwl_mvm_mac_sta_statistics,
5249 .get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats,
5250 .start_pmsr = iwl_mvm_start_pmsr,
5251 .abort_pmsr = iwl_mvm_abort_pmsr,
5252
5253 .can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate,
5254 #ifdef CONFIG_IWLWIFI_DEBUGFS
5255 .sta_add_debugfs = iwl_mvm_sta_add_debugfs,
5256 #endif
5257 };
Linux with added FPC-III support