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Merge tag 'mac80211-next-for-net-next-2020-02-14' of git://git.kernel.org/pub/scm...
[thirdparty/linux.git] / drivers / net / wireless / intel / iwlwifi / mvm / mac80211.c
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
9 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
10 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called COPYING.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <linuxwifi@intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 * BSD LICENSE
29 *
30 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
31 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
32 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation
33 * All rights reserved.
34 *
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
37 * are met:
38 *
39 * * Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * * Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in
43 * the documentation and/or other materials provided with the
44 * distribution.
45 * * Neither the name Intel Corporation nor the names of its
46 * contributors may be used to endorse or promote products derived
47 * from this software without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
50 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
51 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
52 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
53 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
55 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
60 *
61 *****************************************************************************/
62 #include <linux/kernel.h>
63 #include <linux/slab.h>
64 #include <linux/skbuff.h>
65 #include <linux/netdevice.h>
66 #include <linux/etherdevice.h>
67 #include <linux/ip.h>
68 #include <linux/if_arp.h>
69 #include <linux/time.h>
70 #include <net/mac80211.h>
71 #include <net/ieee80211_radiotap.h>
72 #include <net/tcp.h>
73
74 #include "iwl-op-mode.h"
75 #include "iwl-io.h"
76 #include "mvm.h"
77 #include "sta.h"
78 #include "time-event.h"
79 #include "iwl-eeprom-parse.h"
80 #include "iwl-phy-db.h"
81 #include "testmode.h"
82 #include "fw/error-dump.h"
83 #include "iwl-prph.h"
84 #include "iwl-nvm-parse.h"
85
86 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
87 {
88 .max = 1,
89 .types = BIT(NL80211_IFTYPE_STATION),
90 },
91 {
92 .max = 1,
93 .types = BIT(NL80211_IFTYPE_AP) |
94 BIT(NL80211_IFTYPE_P2P_CLIENT) |
95 BIT(NL80211_IFTYPE_P2P_GO),
96 },
97 {
98 .max = 1,
99 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
100 },
101 };
102
103 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
104 {
105 .num_different_channels = 2,
106 .max_interfaces = 3,
107 .limits = iwl_mvm_limits,
108 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
109 },
110 };
111
112 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
113 /*
114 * Use the reserved field to indicate magic values.
115 * these values will only be used internally by the driver,
116 * and won't make it to the fw (reserved will be 0).
117 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
118 * be the vif's ip address. in case there is not a single
119 * ip address (0, or more than 1), this attribute will
120 * be skipped.
121 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
122 * the LSB bytes of the vif's mac address
123 */
124 enum {
125 BC_FILTER_MAGIC_NONE = 0,
126 BC_FILTER_MAGIC_IP,
127 BC_FILTER_MAGIC_MAC,
128 };
129
130 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
131 {
132 /* arp */
133 .discard = 0,
134 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
135 .attrs = {
136 {
137 /* frame type - arp, hw type - ethernet */
138 .offset_type =
139 BCAST_FILTER_OFFSET_PAYLOAD_START,
140 .offset = sizeof(rfc1042_header),
141 .val = cpu_to_be32(0x08060001),
142 .mask = cpu_to_be32(0xffffffff),
143 },
144 {
145 /* arp dest ip */
146 .offset_type =
147 BCAST_FILTER_OFFSET_PAYLOAD_START,
148 .offset = sizeof(rfc1042_header) + 2 +
149 sizeof(struct arphdr) +
150 ETH_ALEN + sizeof(__be32) +
151 ETH_ALEN,
152 .mask = cpu_to_be32(0xffffffff),
153 /* mark it as special field */
154 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
155 },
156 },
157 },
158 {
159 /* dhcp offer bcast */
160 .discard = 0,
161 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
162 .attrs = {
163 {
164 /* udp dest port - 68 (bootp client)*/
165 .offset_type = BCAST_FILTER_OFFSET_IP_END,
166 .offset = offsetof(struct udphdr, dest),
167 .val = cpu_to_be32(0x00440000),
168 .mask = cpu_to_be32(0xffff0000),
169 },
170 {
171 /* dhcp - lsb bytes of client hw address */
172 .offset_type = BCAST_FILTER_OFFSET_IP_END,
173 .offset = 38,
174 .mask = cpu_to_be32(0xffffffff),
175 /* mark it as special field */
176 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
177 },
178 },
179 },
180 /* last filter must be empty */
181 {},
182 };
183 #endif
184
185 static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = {
186 .max_peers = IWL_MVM_TOF_MAX_APS,
187 .report_ap_tsf = 1,
188 .randomize_mac_addr = 1,
189
190 .ftm = {
191 .supported = 1,
192 .asap = 1,
193 .non_asap = 1,
194 .request_lci = 1,
195 .request_civicloc = 1,
196 .max_bursts_exponent = -1, /* all supported */
197 .max_ftms_per_burst = 0, /* no limits */
198 .bandwidths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
199 BIT(NL80211_CHAN_WIDTH_20) |
200 BIT(NL80211_CHAN_WIDTH_40) |
201 BIT(NL80211_CHAN_WIDTH_80),
202 .preambles = BIT(NL80211_PREAMBLE_LEGACY) |
203 BIT(NL80211_PREAMBLE_HT) |
204 BIT(NL80211_PREAMBLE_VHT),
205 },
206 };
207
208 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
209 enum set_key_cmd cmd,
210 struct ieee80211_vif *vif,
211 struct ieee80211_sta *sta,
212 struct ieee80211_key_conf *key);
213
214 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
215 {
216 int i;
217
218 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
219 for (i = 0; i < NUM_PHY_CTX; i++) {
220 mvm->phy_ctxts[i].id = i;
221 mvm->phy_ctxts[i].ref = 0;
222 }
223 }
224
225 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
226 const char *alpha2,
227 enum iwl_mcc_source src_id,
228 bool *changed)
229 {
230 struct ieee80211_regdomain *regd = NULL;
231 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
232 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
233 struct iwl_mcc_update_resp *resp;
234
235 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
236
237 lockdep_assert_held(&mvm->mutex);
238
239 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
240 if (IS_ERR_OR_NULL(resp)) {
241 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
242 PTR_ERR_OR_ZERO(resp));
243 goto out;
244 }
245
246 if (changed) {
247 u32 status = le32_to_cpu(resp->status);
248
249 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE ||
250 status == MCC_RESP_ILLEGAL);
251 }
252
253 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
254 __le32_to_cpu(resp->n_channels),
255 resp->channels,
256 __le16_to_cpu(resp->mcc),
257 __le16_to_cpu(resp->geo_info),
258 __le16_to_cpu(resp->cap));
259 /* Store the return source id */
260 src_id = resp->source_id;
261 kfree(resp);
262 if (IS_ERR_OR_NULL(regd)) {
263 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
264 PTR_ERR_OR_ZERO(regd));
265 goto out;
266 }
267
268 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
269 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
270 mvm->lar_regdom_set = true;
271 mvm->mcc_src = src_id;
272
273 out:
274 return regd;
275 }
276
277 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
278 {
279 bool changed;
280 struct ieee80211_regdomain *regd;
281
282 if (!iwl_mvm_is_lar_supported(mvm))
283 return;
284
285 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
286 if (!IS_ERR_OR_NULL(regd)) {
287 /* only update the regulatory core if changed */
288 if (changed)
289 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
290
291 kfree(regd);
292 }
293 }
294
295 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
296 bool *changed)
297 {
298 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
299 iwl_mvm_is_wifi_mcc_supported(mvm) ?
300 MCC_SOURCE_GET_CURRENT :
301 MCC_SOURCE_OLD_FW, changed);
302 }
303
304 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
305 {
306 enum iwl_mcc_source used_src;
307 struct ieee80211_regdomain *regd;
308 int ret;
309 bool changed;
310 const struct ieee80211_regdomain *r =
311 rtnl_dereference(mvm->hw->wiphy->regd);
312
313 if (!r)
314 return -ENOENT;
315
316 /* save the last source in case we overwrite it below */
317 used_src = mvm->mcc_src;
318 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
319 /* Notify the firmware we support wifi location updates */
320 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
321 if (!IS_ERR_OR_NULL(regd))
322 kfree(regd);
323 }
324
325 /* Now set our last stored MCC and source */
326 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
327 &changed);
328 if (IS_ERR_OR_NULL(regd))
329 return -EIO;
330
331 /* update cfg80211 if the regdomain was changed */
332 if (changed)
333 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
334 else
335 ret = 0;
336
337 kfree(regd);
338 return ret;
339 }
340
341 static const u8 he_if_types_ext_capa_sta[] = {
342 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING,
343 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT,
344 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF,
345 [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT,
346 };
347
348 static const struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = {
349 {
350 .iftype = NL80211_IFTYPE_STATION,
351 .extended_capabilities = he_if_types_ext_capa_sta,
352 .extended_capabilities_mask = he_if_types_ext_capa_sta,
353 .extended_capabilities_len = sizeof(he_if_types_ext_capa_sta),
354 },
355 };
356
357 static int
358 iwl_mvm_op_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
359 {
360 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
361 *tx_ant = iwl_mvm_get_valid_tx_ant(mvm);
362 *rx_ant = iwl_mvm_get_valid_rx_ant(mvm);
363 return 0;
364 }
365
366 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
367 {
368 struct ieee80211_hw *hw = mvm->hw;
369 int num_mac, ret, i;
370 static const u32 mvm_ciphers[] = {
371 WLAN_CIPHER_SUITE_WEP40,
372 WLAN_CIPHER_SUITE_WEP104,
373 WLAN_CIPHER_SUITE_TKIP,
374 WLAN_CIPHER_SUITE_CCMP,
375 };
376 #ifdef CONFIG_PM_SLEEP
377 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
378 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
379 #endif
380
381 /* Tell mac80211 our characteristics */
382 ieee80211_hw_set(hw, SIGNAL_DBM);
383 ieee80211_hw_set(hw, SPECTRUM_MGMT);
384 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
385 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
386 ieee80211_hw_set(hw, SUPPORTS_PS);
387 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
388 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
389 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
390 ieee80211_hw_set(hw, CONNECTION_MONITOR);
391 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
392 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
393 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
394 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
395 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
396 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP);
397 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
398 ieee80211_hw_set(hw, BUFF_MMPDU_TXQ);
399 ieee80211_hw_set(hw, STA_MMPDU_TXQ);
400 /*
401 * On older devices, enabling TX A-MSDU occasionally leads to
402 * something getting messed up, the command read from the FIFO
403 * gets out of sync and isn't a TX command, so that we have an
404 * assert EDC.
405 *
406 * It's not clear where the bug is, but since we didn't used to
407 * support A-MSDU until moving the mac80211 iTXQs, just leave it
408 * for older devices. We also don't see this issue on any newer
409 * devices.
410 */
411 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000)
412 ieee80211_hw_set(hw, TX_AMSDU);
413 ieee80211_hw_set(hw, TX_FRAG_LIST);
414
415 if (iwl_mvm_has_tlc_offload(mvm)) {
416 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
417 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
418 }
419
420 if (iwl_mvm_has_new_rx_api(mvm))
421 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
422
423 if (fw_has_capa(&mvm->fw->ucode_capa,
424 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) {
425 ieee80211_hw_set(hw, AP_LINK_PS);
426 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) {
427 /*
428 * we absolutely need this for the new TX API since that comes
429 * with many more queues than the current code can deal with
430 * for station powersave
431 */
432 return -EINVAL;
433 }
434
435 if (mvm->trans->num_rx_queues > 1)
436 ieee80211_hw_set(hw, USES_RSS);
437
438 if (mvm->trans->max_skb_frags)
439 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
440
441 hw->queues = IEEE80211_MAX_QUEUES;
442 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
443 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
444 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
445 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
446 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
447
448 hw->radiotap_timestamp.units_pos =
449 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
450 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
451 /* this is the case for CCK frames, it's better (only 8) for OFDM */
452 hw->radiotap_timestamp.accuracy = 22;
453
454 if (!iwl_mvm_has_tlc_offload(mvm))
455 hw->rate_control_algorithm = RS_NAME;
456
457 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
458 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
459 hw->max_tx_fragments = mvm->trans->max_skb_frags;
460
461 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
462 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
463 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
464 hw->wiphy->cipher_suites = mvm->ciphers;
465
466 if (iwl_mvm_has_new_rx_api(mvm)) {
467 mvm->ciphers[hw->wiphy->n_cipher_suites] =
468 WLAN_CIPHER_SUITE_GCMP;
469 hw->wiphy->n_cipher_suites++;
470 mvm->ciphers[hw->wiphy->n_cipher_suites] =
471 WLAN_CIPHER_SUITE_GCMP_256;
472 hw->wiphy->n_cipher_suites++;
473 }
474
475 /* Enable 11w if software crypto is not enabled (as the
476 * firmware will interpret some mgmt packets, so enabling it
477 * with software crypto isn't safe).
478 */
479 if (!iwlwifi_mod_params.swcrypto) {
480 ieee80211_hw_set(hw, MFP_CAPABLE);
481 mvm->ciphers[hw->wiphy->n_cipher_suites] =
482 WLAN_CIPHER_SUITE_AES_CMAC;
483 hw->wiphy->n_cipher_suites++;
484 if (iwl_mvm_has_new_rx_api(mvm)) {
485 mvm->ciphers[hw->wiphy->n_cipher_suites] =
486 WLAN_CIPHER_SUITE_BIP_GMAC_128;
487 hw->wiphy->n_cipher_suites++;
488 mvm->ciphers[hw->wiphy->n_cipher_suites] =
489 WLAN_CIPHER_SUITE_BIP_GMAC_256;
490 hw->wiphy->n_cipher_suites++;
491 }
492 }
493
494 /* currently FW API supports only one optional cipher scheme */
495 if (mvm->fw->cs[0].cipher) {
496 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
497 struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
498
499 mvm->hw->n_cipher_schemes = 1;
500
501 cs->cipher = le32_to_cpu(fwcs->cipher);
502 cs->iftype = BIT(NL80211_IFTYPE_STATION);
503 cs->hdr_len = fwcs->hdr_len;
504 cs->pn_len = fwcs->pn_len;
505 cs->pn_off = fwcs->pn_off;
506 cs->key_idx_off = fwcs->key_idx_off;
507 cs->key_idx_mask = fwcs->key_idx_mask;
508 cs->key_idx_shift = fwcs->key_idx_shift;
509 cs->mic_len = fwcs->mic_len;
510
511 mvm->hw->cipher_schemes = mvm->cs;
512 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
513 hw->wiphy->n_cipher_suites++;
514 }
515
516 if (fw_has_capa(&mvm->fw->ucode_capa,
517 IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) {
518 wiphy_ext_feature_set(hw->wiphy,
519 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER);
520 hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa;
521 }
522
523 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
524 hw->wiphy->features |=
525 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
526 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
527 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
528
529 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
530 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
531 hw->chanctx_data_size = sizeof(u16);
532 hw->txq_data_size = sizeof(struct iwl_mvm_txq);
533
534 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
535 BIT(NL80211_IFTYPE_P2P_CLIENT) |
536 BIT(NL80211_IFTYPE_AP) |
537 BIT(NL80211_IFTYPE_P2P_GO) |
538 BIT(NL80211_IFTYPE_P2P_DEVICE) |
539 BIT(NL80211_IFTYPE_ADHOC);
540
541 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
542 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
543 hw->wiphy->features |= NL80211_FEATURE_HT_IBSS;
544
545 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
546 if (iwl_mvm_is_lar_supported(mvm))
547 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
548 else
549 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
550 REGULATORY_DISABLE_BEACON_HINTS;
551
552 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
553 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
554
555 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
556 hw->wiphy->n_iface_combinations =
557 ARRAY_SIZE(iwl_mvm_iface_combinations);
558
559 hw->wiphy->max_remain_on_channel_duration = 10000;
560 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
561
562 /* Extract MAC address */
563 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
564 hw->wiphy->addresses = mvm->addresses;
565 hw->wiphy->n_addresses = 1;
566
567 /* Extract additional MAC addresses if available */
568 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
569 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
570
571 for (i = 1; i < num_mac; i++) {
572 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
573 ETH_ALEN);
574 mvm->addresses[i].addr[5]++;
575 hw->wiphy->n_addresses++;
576 }
577
578 iwl_mvm_reset_phy_ctxts(mvm);
579
580 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
581
582 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
583
584 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
585 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
586 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
587
588 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
589 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
590 else
591 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
592
593 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
594 hw->wiphy->bands[NL80211_BAND_2GHZ] =
595 &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
596 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
597 hw->wiphy->bands[NL80211_BAND_5GHZ] =
598 &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
599
600 if (fw_has_capa(&mvm->fw->ucode_capa,
601 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
602 fw_has_api(&mvm->fw->ucode_capa,
603 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
604 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
605 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
606 }
607
608 hw->wiphy->hw_version = mvm->trans->hw_id;
609
610 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
611 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
612 else
613 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
614
615 hw->wiphy->max_sched_scan_reqs = 1;
616 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
617 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
618 /* we create the 802.11 header and zero length SSID IE. */
619 hw->wiphy->max_sched_scan_ie_len =
620 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
621 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
622 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
623
624 /*
625 * the firmware uses u8 for num of iterations, but 0xff is saved for
626 * infinite loop, so the maximum number of iterations is actually 254.
627 */
628 hw->wiphy->max_sched_scan_plan_iterations = 254;
629
630 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
631 NL80211_FEATURE_LOW_PRIORITY_SCAN |
632 NL80211_FEATURE_P2P_GO_OPPPS |
633 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
634 NL80211_FEATURE_DYNAMIC_SMPS |
635 NL80211_FEATURE_STATIC_SMPS |
636 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
637
638 if (fw_has_capa(&mvm->fw->ucode_capa,
639 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
640 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
641 if (fw_has_capa(&mvm->fw->ucode_capa,
642 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
643 hw->wiphy->features |= NL80211_FEATURE_QUIET;
644
645 if (fw_has_capa(&mvm->fw->ucode_capa,
646 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
647 hw->wiphy->features |=
648 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
649
650 if (fw_has_capa(&mvm->fw->ucode_capa,
651 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
652 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
653
654 if (fw_has_api(&mvm->fw->ucode_capa,
655 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
656 wiphy_ext_feature_set(hw->wiphy,
657 NL80211_EXT_FEATURE_SCAN_START_TIME);
658 wiphy_ext_feature_set(hw->wiphy,
659 NL80211_EXT_FEATURE_BSS_PARENT_TSF);
660 wiphy_ext_feature_set(hw->wiphy,
661 NL80211_EXT_FEATURE_SET_SCAN_DWELL);
662 }
663
664 if (iwl_mvm_is_oce_supported(mvm)) {
665 wiphy_ext_feature_set(hw->wiphy,
666 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP);
667 wiphy_ext_feature_set(hw->wiphy,
668 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME);
669 wiphy_ext_feature_set(hw->wiphy,
670 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION);
671 wiphy_ext_feature_set(hw->wiphy,
672 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE);
673 }
674
675 if (mvm->nvm_data->sku_cap_11ax_enable &&
676 !iwlwifi_mod_params.disable_11ax) {
677 hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa;
678 hw->wiphy->num_iftype_ext_capab =
679 ARRAY_SIZE(he_iftypes_ext_capa);
680
681 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
682 ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID);
683 }
684
685 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
686
687 #ifdef CONFIG_PM_SLEEP
688 if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) &&
689 mvm->trans->ops->d3_suspend &&
690 mvm->trans->ops->d3_resume &&
691 device_can_wakeup(mvm->trans->dev)) {
692 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
693 WIPHY_WOWLAN_DISCONNECT |
694 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
695 WIPHY_WOWLAN_RFKILL_RELEASE |
696 WIPHY_WOWLAN_NET_DETECT;
697 if (!iwlwifi_mod_params.swcrypto)
698 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
699 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
700 WIPHY_WOWLAN_4WAY_HANDSHAKE;
701
702 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
703 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
704 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
705 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
706 hw->wiphy->wowlan = &mvm->wowlan;
707 }
708 #endif
709
710 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
711 /* assign default bcast filtering configuration */
712 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
713 #endif
714
715 ret = iwl_mvm_leds_init(mvm);
716 if (ret)
717 return ret;
718
719 if (fw_has_capa(&mvm->fw->ucode_capa,
720 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
721 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
722 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
723 ieee80211_hw_set(hw, TDLS_WIDER_BW);
724 }
725
726 if (fw_has_capa(&mvm->fw->ucode_capa,
727 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
728 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
729 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
730 }
731
732 hw->netdev_features |= mvm->cfg->features;
733 if (!iwl_mvm_is_csum_supported(mvm)) {
734 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
735 NETIF_F_RXCSUM);
736 /* We may support SW TX CSUM */
737 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
738 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
739 }
740
741 if (mvm->cfg->vht_mu_mimo_supported)
742 wiphy_ext_feature_set(hw->wiphy,
743 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
744
745 hw->wiphy->available_antennas_tx = iwl_mvm_get_valid_tx_ant(mvm);
746 hw->wiphy->available_antennas_rx = iwl_mvm_get_valid_rx_ant(mvm);
747
748 ret = ieee80211_register_hw(mvm->hw);
749 if (ret) {
750 iwl_mvm_leds_exit(mvm);
751 }
752
753 return ret;
754 }
755
756 static void iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
757 struct ieee80211_sta *sta)
758 {
759 if (likely(sta)) {
760 if (likely(iwl_mvm_tx_skb_sta(mvm, skb, sta) == 0))
761 return;
762 } else {
763 if (likely(iwl_mvm_tx_skb_non_sta(mvm, skb) == 0))
764 return;
765 }
766
767 ieee80211_free_txskb(mvm->hw, skb);
768 }
769
770 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
771 struct ieee80211_tx_control *control,
772 struct sk_buff *skb)
773 {
774 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
775 struct ieee80211_sta *sta = control->sta;
776 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
777 struct ieee80211_hdr *hdr = (void *)skb->data;
778 bool offchannel = IEEE80211_SKB_CB(skb)->flags &
779 IEEE80211_TX_CTL_TX_OFFCHAN;
780
781 if (iwl_mvm_is_radio_killed(mvm)) {
782 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
783 goto drop;
784 }
785
786 if (offchannel &&
787 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
788 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
789 goto drop;
790
791 /* treat non-bufferable MMPDUs on AP interfaces as broadcast */
792 if ((info->control.vif->type == NL80211_IFTYPE_AP ||
793 info->control.vif->type == NL80211_IFTYPE_ADHOC) &&
794 ieee80211_is_mgmt(hdr->frame_control) &&
795 !ieee80211_is_bufferable_mmpdu(hdr->frame_control))
796 sta = NULL;
797
798 /* If there is no sta, and it's not offchannel - send through AP */
799 if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION &&
800 !offchannel) {
801 struct iwl_mvm_vif *mvmvif =
802 iwl_mvm_vif_from_mac80211(info->control.vif);
803 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id);
804
805 if (ap_sta_id < IWL_MVM_STATION_COUNT) {
806 /* mac80211 holds rcu read lock */
807 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]);
808 if (IS_ERR_OR_NULL(sta))
809 goto drop;
810 }
811 }
812
813 iwl_mvm_tx_skb(mvm, skb, sta);
814 return;
815 drop:
816 ieee80211_free_txskb(hw, skb);
817 }
818
819 void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq)
820 {
821 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
822 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
823 struct sk_buff *skb = NULL;
824
825 /*
826 * No need for threads to be pending here, they can leave the first
827 * taker all the work.
828 *
829 * mvmtxq->tx_request logic:
830 *
831 * If 0, no one is currently TXing, set to 1 to indicate current thread
832 * will now start TX and other threads should quit.
833 *
834 * If 1, another thread is currently TXing, set to 2 to indicate to
835 * that thread that there was another request. Since that request may
836 * have raced with the check whether the queue is empty, the TXing
837 * thread should check the queue's status one more time before leaving.
838 * This check is done in order to not leave any TX hanging in the queue
839 * until the next TX invocation (which may not even happen).
840 *
841 * If 2, another thread is currently TXing, and it will already double
842 * check the queue, so do nothing.
843 */
844 if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2))
845 return;
846
847 rcu_read_lock();
848 do {
849 while (likely(!mvmtxq->stopped &&
850 (mvm->trans->system_pm_mode ==
851 IWL_PLAT_PM_MODE_DISABLED))) {
852 skb = ieee80211_tx_dequeue(hw, txq);
853
854 if (!skb) {
855 if (txq->sta)
856 IWL_DEBUG_TX(mvm,
857 "TXQ of sta %pM tid %d is now empty\n",
858 txq->sta->addr,
859 txq->tid);
860 break;
861 }
862
863 iwl_mvm_tx_skb(mvm, skb, txq->sta);
864 }
865 } while (atomic_dec_return(&mvmtxq->tx_request));
866 rcu_read_unlock();
867 }
868
869 static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw,
870 struct ieee80211_txq *txq)
871 {
872 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
873 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
874
875 /*
876 * Please note that racing is handled very carefully here:
877 * mvmtxq->txq_id is updated during allocation, and mvmtxq->list is
878 * deleted afterwards.
879 * This means that if:
880 * mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list):
881 * queue is allocated and we can TX.
882 * mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list):
883 * a race, should defer the frame.
884 * mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list):
885 * need to allocate the queue and defer the frame.
886 * mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list):
887 * queue is already scheduled for allocation, no need to allocate,
888 * should defer the frame.
889 */
890
891 /* If the queue is allocated TX and return. */
892 if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) {
893 /*
894 * Check that list is empty to avoid a race where txq_id is
895 * already updated, but the queue allocation work wasn't
896 * finished
897 */
898 if (unlikely(txq->sta && !list_empty(&mvmtxq->list)))
899 return;
900
901 iwl_mvm_mac_itxq_xmit(hw, txq);
902 return;
903 }
904
905 /* The list is being deleted only after the queue is fully allocated. */
906 if (!list_empty(&mvmtxq->list))
907 return;
908
909 list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs);
910 schedule_work(&mvm->add_stream_wk);
911 }
912
913 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
914 do { \
915 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
916 break; \
917 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \
918 } while (0)
919
920 static void
921 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
922 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
923 enum ieee80211_ampdu_mlme_action action)
924 {
925 struct iwl_fw_dbg_trigger_tlv *trig;
926 struct iwl_fw_dbg_trigger_ba *ba_trig;
927
928 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
929 FW_DBG_TRIGGER_BA);
930 if (!trig)
931 return;
932
933 ba_trig = (void *)trig->data;
934
935 switch (action) {
936 case IEEE80211_AMPDU_TX_OPERATIONAL: {
937 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
938 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
939
940 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
941 "TX AGG START: MAC %pM tid %d ssn %d\n",
942 sta->addr, tid, tid_data->ssn);
943 break;
944 }
945 case IEEE80211_AMPDU_TX_STOP_CONT:
946 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
947 "TX AGG STOP: MAC %pM tid %d\n",
948 sta->addr, tid);
949 break;
950 case IEEE80211_AMPDU_RX_START:
951 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
952 "RX AGG START: MAC %pM tid %d ssn %d\n",
953 sta->addr, tid, rx_ba_ssn);
954 break;
955 case IEEE80211_AMPDU_RX_STOP:
956 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
957 "RX AGG STOP: MAC %pM tid %d\n",
958 sta->addr, tid);
959 break;
960 default:
961 break;
962 }
963 }
964
965 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
966 struct ieee80211_vif *vif,
967 struct ieee80211_ampdu_params *params)
968 {
969 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
970 int ret;
971 struct ieee80211_sta *sta = params->sta;
972 enum ieee80211_ampdu_mlme_action action = params->action;
973 u16 tid = params->tid;
974 u16 *ssn = &params->ssn;
975 u16 buf_size = params->buf_size;
976 bool amsdu = params->amsdu;
977 u16 timeout = params->timeout;
978
979 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
980 sta->addr, tid, action);
981
982 if (!(mvm->nvm_data->sku_cap_11n_enable))
983 return -EACCES;
984
985 mutex_lock(&mvm->mutex);
986
987 switch (action) {
988 case IEEE80211_AMPDU_RX_START:
989 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id ==
990 iwl_mvm_sta_from_mac80211(sta)->sta_id) {
991 struct iwl_mvm_vif *mvmvif;
992 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id;
993 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid];
994
995 mdata->opened_rx_ba_sessions = true;
996 mvmvif = iwl_mvm_vif_from_mac80211(vif);
997 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk);
998 }
999 if (!iwl_enable_rx_ampdu()) {
1000 ret = -EINVAL;
1001 break;
1002 }
1003 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
1004 timeout);
1005 break;
1006 case IEEE80211_AMPDU_RX_STOP:
1007 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
1008 timeout);
1009 break;
1010 case IEEE80211_AMPDU_TX_START:
1011 if (!iwl_enable_tx_ampdu()) {
1012 ret = -EINVAL;
1013 break;
1014 }
1015 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
1016 break;
1017 case IEEE80211_AMPDU_TX_STOP_CONT:
1018 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
1019 break;
1020 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1021 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1022 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
1023 break;
1024 case IEEE80211_AMPDU_TX_OPERATIONAL:
1025 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
1026 buf_size, amsdu);
1027 break;
1028 default:
1029 WARN_ON_ONCE(1);
1030 ret = -EINVAL;
1031 break;
1032 }
1033
1034 if (!ret) {
1035 u16 rx_ba_ssn = 0;
1036
1037 if (action == IEEE80211_AMPDU_RX_START)
1038 rx_ba_ssn = *ssn;
1039
1040 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
1041 rx_ba_ssn, action);
1042 }
1043 mutex_unlock(&mvm->mutex);
1044
1045 return ret;
1046 }
1047
1048 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1049 struct ieee80211_vif *vif)
1050 {
1051 struct iwl_mvm *mvm = data;
1052 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1053
1054 mvmvif->uploaded = false;
1055 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1056
1057 spin_lock_bh(&mvm->time_event_lock);
1058 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1059 spin_unlock_bh(&mvm->time_event_lock);
1060
1061 mvmvif->phy_ctxt = NULL;
1062 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1063 memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data));
1064 }
1065
1066 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1067 {
1068 iwl_mvm_stop_device(mvm);
1069
1070 mvm->cur_aid = 0;
1071
1072 mvm->scan_status = 0;
1073 mvm->ps_disabled = false;
1074 mvm->rfkill_safe_init_done = false;
1075
1076 /* just in case one was running */
1077 iwl_mvm_cleanup_roc_te(mvm);
1078 ieee80211_remain_on_channel_expired(mvm->hw);
1079
1080 iwl_mvm_ftm_restart(mvm);
1081
1082 /*
1083 * cleanup all interfaces, even inactive ones, as some might have
1084 * gone down during the HW restart
1085 */
1086 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1087
1088 mvm->p2p_device_vif = NULL;
1089
1090 iwl_mvm_reset_phy_ctxts(mvm);
1091 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1092 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1093 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1094
1095 ieee80211_wake_queues(mvm->hw);
1096
1097 mvm->vif_count = 0;
1098 mvm->rx_ba_sessions = 0;
1099 mvm->fwrt.dump.conf = FW_DBG_INVALID;
1100 mvm->monitor_on = false;
1101
1102 /* keep statistics ticking */
1103 iwl_mvm_accu_radio_stats(mvm);
1104 }
1105
1106 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1107 {
1108 int ret;
1109
1110 lockdep_assert_held(&mvm->mutex);
1111
1112 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
1113 /*
1114 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
1115 * so later code will - from now on - see that we're doing it.
1116 */
1117 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1118 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1119 /* Clean up some internal and mac80211 state on restart */
1120 iwl_mvm_restart_cleanup(mvm);
1121 }
1122 ret = iwl_mvm_up(mvm);
1123
1124 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT,
1125 NULL);
1126 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC,
1127 NULL);
1128
1129 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1130 /* Something went wrong - we need to finish some cleanup
1131 * that normally iwl_mvm_mac_restart_complete() below
1132 * would do.
1133 */
1134 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1135 }
1136
1137 return ret;
1138 }
1139
1140 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1141 {
1142 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1143 int ret;
1144
1145 mutex_lock(&mvm->mutex);
1146 ret = __iwl_mvm_mac_start(mvm);
1147 mutex_unlock(&mvm->mutex);
1148
1149 return ret;
1150 }
1151
1152 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1153 {
1154 int ret;
1155
1156 mutex_lock(&mvm->mutex);
1157
1158 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1159
1160 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1161 if (ret)
1162 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1163 ret);
1164
1165 iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY);
1166
1167 /*
1168 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1169 * of packets the FW sent out, so we must reconnect.
1170 */
1171 iwl_mvm_teardown_tdls_peers(mvm);
1172
1173 mutex_unlock(&mvm->mutex);
1174 }
1175
1176 static void
1177 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1178 enum ieee80211_reconfig_type reconfig_type)
1179 {
1180 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1181
1182 switch (reconfig_type) {
1183 case IEEE80211_RECONFIG_TYPE_RESTART:
1184 iwl_mvm_restart_complete(mvm);
1185 break;
1186 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1187 break;
1188 }
1189 }
1190
1191 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1192 {
1193 lockdep_assert_held(&mvm->mutex);
1194
1195 /* firmware counters are obviously reset now, but we shouldn't
1196 * partially track so also clear the fw_reset_accu counters.
1197 */
1198 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1199
1200 /* async_handlers_wk is now blocked */
1201
1202 /*
1203 * The work item could be running or queued if the
1204 * ROC time event stops just as we get here.
1205 */
1206 flush_work(&mvm->roc_done_wk);
1207
1208 iwl_mvm_stop_device(mvm);
1209
1210 iwl_mvm_async_handlers_purge(mvm);
1211 /* async_handlers_list is empty and will stay empty: HW is stopped */
1212
1213 /* the fw is stopped, the aux sta is dead: clean up driver state */
1214 iwl_mvm_del_aux_sta(mvm);
1215
1216 /*
1217 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the
1218 * hw (as restart_complete() won't be called in this case) and mac80211
1219 * won't execute the restart.
1220 * But make sure to cleanup interfaces that have gone down before/during
1221 * HW restart was requested.
1222 */
1223 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
1224 test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
1225 &mvm->status))
1226 ieee80211_iterate_interfaces(mvm->hw, 0,
1227 iwl_mvm_cleanup_iterator, mvm);
1228
1229 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1230 * make sure there's nothing left there and warn if any is found.
1231 */
1232 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1233 int i;
1234
1235 for (i = 0; i < mvm->max_scans; i++) {
1236 if (WARN_ONCE(mvm->scan_uid_status[i],
1237 "UMAC scan UID %d status was not cleaned\n",
1238 i))
1239 mvm->scan_uid_status[i] = 0;
1240 }
1241 }
1242 }
1243
1244 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1245 {
1246 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1247
1248 flush_work(&mvm->async_handlers_wk);
1249 flush_work(&mvm->add_stream_wk);
1250
1251 /*
1252 * Lock and clear the firmware running bit here already, so that
1253 * new commands coming in elsewhere, e.g. from debugfs, will not
1254 * be able to proceed. This is important here because one of those
1255 * debugfs files causes the firmware dump to be triggered, and if we
1256 * don't stop debugfs accesses before canceling that it could be
1257 * retriggered after we flush it but before we've cleared the bit.
1258 */
1259 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1260
1261 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1262 cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1263 iwl_fw_free_dump_desc(&mvm->fwrt);
1264
1265 mutex_lock(&mvm->mutex);
1266 __iwl_mvm_mac_stop(mvm);
1267 mutex_unlock(&mvm->mutex);
1268
1269 /*
1270 * The worker might have been waiting for the mutex, let it run and
1271 * discover that its list is now empty.
1272 */
1273 cancel_work_sync(&mvm->async_handlers_wk);
1274 }
1275
1276 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1277 {
1278 u16 i;
1279
1280 lockdep_assert_held(&mvm->mutex);
1281
1282 for (i = 0; i < NUM_PHY_CTX; i++)
1283 if (!mvm->phy_ctxts[i].ref)
1284 return &mvm->phy_ctxts[i];
1285
1286 IWL_ERR(mvm, "No available PHY context\n");
1287 return NULL;
1288 }
1289
1290 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1291 s16 tx_power)
1292 {
1293 int len;
1294 union {
1295 struct iwl_dev_tx_power_cmd v5;
1296 struct iwl_dev_tx_power_cmd_v4 v4;
1297 } cmd = {
1298 .v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1299 .v5.v3.mac_context_id =
1300 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1301 .v5.v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1302 };
1303
1304 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1305 cmd.v5.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1306
1307 if (fw_has_api(&mvm->fw->ucode_capa,
1308 IWL_UCODE_TLV_API_REDUCE_TX_POWER))
1309 len = sizeof(cmd.v5);
1310 else if (fw_has_capa(&mvm->fw->ucode_capa,
1311 IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1312 len = sizeof(cmd.v4);
1313 else
1314 len = sizeof(cmd.v4.v3);
1315
1316 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1317 }
1318
1319 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
1320 struct ieee80211_vif *vif)
1321 {
1322 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1323 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1324 int ret;
1325
1326 mutex_lock(&mvm->mutex);
1327
1328 if (mvmvif->csa_failed) {
1329 mvmvif->csa_failed = false;
1330 ret = -EIO;
1331 goto out_unlock;
1332 }
1333
1334 if (vif->type == NL80211_IFTYPE_STATION) {
1335 struct iwl_mvm_sta *mvmsta;
1336
1337 mvmvif->csa_bcn_pending = false;
1338 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
1339 mvmvif->ap_sta_id);
1340
1341 if (WARN_ON(!mvmsta)) {
1342 ret = -EIO;
1343 goto out_unlock;
1344 }
1345
1346 if (!fw_has_capa(&mvm->fw->ucode_capa,
1347 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
1348 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
1349
1350 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1351
1352 if (!fw_has_capa(&mvm->fw->ucode_capa,
1353 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
1354 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1355 if (ret)
1356 goto out_unlock;
1357
1358 iwl_mvm_stop_session_protection(mvm, vif);
1359 }
1360 }
1361
1362 mvmvif->ps_disabled = false;
1363
1364 ret = iwl_mvm_power_update_ps(mvm);
1365
1366 out_unlock:
1367 mutex_unlock(&mvm->mutex);
1368
1369 return ret;
1370 }
1371
1372 static void iwl_mvm_abort_channel_switch(struct ieee80211_hw *hw,
1373 struct ieee80211_vif *vif)
1374 {
1375 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1376 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1377 struct iwl_chan_switch_te_cmd cmd = {
1378 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1379 mvmvif->color)),
1380 .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE),
1381 };
1382
1383 IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id);
1384
1385 mutex_lock(&mvm->mutex);
1386 WARN_ON(iwl_mvm_send_cmd_pdu(mvm,
1387 WIDE_ID(MAC_CONF_GROUP,
1388 CHANNEL_SWITCH_TIME_EVENT_CMD),
1389 0, sizeof(cmd), &cmd));
1390 mutex_unlock(&mvm->mutex);
1391
1392 WARN_ON(iwl_mvm_post_channel_switch(hw, vif));
1393 }
1394
1395 static void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk)
1396 {
1397 struct iwl_mvm *mvm;
1398 struct iwl_mvm_vif *mvmvif;
1399 struct ieee80211_vif *vif;
1400
1401 mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work);
1402 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);
1403 mvm = mvmvif->mvm;
1404
1405 iwl_mvm_abort_channel_switch(mvm->hw, vif);
1406 ieee80211_chswitch_done(vif, false);
1407 }
1408
1409 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1410 struct ieee80211_vif *vif)
1411 {
1412 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1413 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1414 int ret;
1415
1416 mvmvif->mvm = mvm;
1417 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1418
1419 /*
1420 * Not much to do here. The stack will not allow interface
1421 * types or combinations that we didn't advertise, so we
1422 * don't really have to check the types.
1423 */
1424
1425 mutex_lock(&mvm->mutex);
1426
1427 /* make sure that beacon statistics don't go backwards with FW reset */
1428 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1429 mvmvif->beacon_stats.accu_num_beacons +=
1430 mvmvif->beacon_stats.num_beacons;
1431
1432 /* Allocate resources for the MAC context, and add it to the fw */
1433 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1434 if (ret)
1435 goto out_unlock;
1436
1437 rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif);
1438
1439 /* Counting number of interfaces is needed for legacy PM */
1440 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1441 mvm->vif_count++;
1442
1443 /*
1444 * The AP binding flow can be done only after the beacon
1445 * template is configured (which happens only in the mac80211
1446 * start_ap() flow), and adding the broadcast station can happen
1447 * only after the binding.
1448 * In addition, since modifying the MAC before adding a bcast
1449 * station is not allowed by the FW, delay the adding of MAC context to
1450 * the point where we can also add the bcast station.
1451 * In short: there's not much we can do at this point, other than
1452 * allocating resources :)
1453 */
1454 if (vif->type == NL80211_IFTYPE_AP ||
1455 vif->type == NL80211_IFTYPE_ADHOC) {
1456 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1457 if (ret) {
1458 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1459 goto out_release;
1460 }
1461
1462 /*
1463 * Only queue for this station is the mcast queue,
1464 * which shouldn't be in TFD mask anyway
1465 */
1466 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1467 0, vif->type,
1468 IWL_STA_MULTICAST);
1469 if (ret)
1470 goto out_release;
1471
1472 iwl_mvm_vif_dbgfs_register(mvm, vif);
1473 goto out_unlock;
1474 }
1475
1476 mvmvif->features |= hw->netdev_features;
1477
1478 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1479 if (ret)
1480 goto out_release;
1481
1482 ret = iwl_mvm_power_update_mac(mvm);
1483 if (ret)
1484 goto out_remove_mac;
1485
1486 /* beacon filtering */
1487 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1488 if (ret)
1489 goto out_remove_mac;
1490
1491 if (!mvm->bf_allowed_vif &&
1492 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1493 mvm->bf_allowed_vif = mvmvif;
1494 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1495 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1496 }
1497
1498 /*
1499 * P2P_DEVICE interface does not have a channel context assigned to it,
1500 * so a dedicated PHY context is allocated to it and the corresponding
1501 * MAC context is bound to it at this stage.
1502 */
1503 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1504
1505 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1506 if (!mvmvif->phy_ctxt) {
1507 ret = -ENOSPC;
1508 goto out_free_bf;
1509 }
1510
1511 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1512 ret = iwl_mvm_binding_add_vif(mvm, vif);
1513 if (ret)
1514 goto out_unref_phy;
1515
1516 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif);
1517 if (ret)
1518 goto out_unbind;
1519
1520 /* Save a pointer to p2p device vif, so it can later be used to
1521 * update the p2p device MAC when a GO is started/stopped */
1522 mvm->p2p_device_vif = vif;
1523 }
1524
1525 iwl_mvm_tcm_add_vif(mvm, vif);
1526 INIT_DELAYED_WORK(&mvmvif->csa_work,
1527 iwl_mvm_channel_switch_disconnect_wk);
1528
1529 if (vif->type == NL80211_IFTYPE_MONITOR)
1530 mvm->monitor_on = true;
1531
1532 iwl_mvm_vif_dbgfs_register(mvm, vif);
1533 goto out_unlock;
1534
1535 out_unbind:
1536 iwl_mvm_binding_remove_vif(mvm, vif);
1537 out_unref_phy:
1538 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1539 out_free_bf:
1540 if (mvm->bf_allowed_vif == mvmvif) {
1541 mvm->bf_allowed_vif = NULL;
1542 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1543 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1544 }
1545 out_remove_mac:
1546 mvmvif->phy_ctxt = NULL;
1547 iwl_mvm_mac_ctxt_remove(mvm, vif);
1548 out_release:
1549 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1550 mvm->vif_count--;
1551 out_unlock:
1552 mutex_unlock(&mvm->mutex);
1553
1554 return ret;
1555 }
1556
1557 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1558 struct ieee80211_vif *vif)
1559 {
1560 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1561 /*
1562 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1563 * We assume here that all the packets sent to the OFFCHANNEL
1564 * queue are sent in ROC session.
1565 */
1566 flush_work(&mvm->roc_done_wk);
1567 }
1568 }
1569
1570 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1571 struct ieee80211_vif *vif)
1572 {
1573 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1574 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1575 struct iwl_probe_resp_data *probe_data;
1576
1577 iwl_mvm_prepare_mac_removal(mvm, vif);
1578
1579 if (!(vif->type == NL80211_IFTYPE_AP ||
1580 vif->type == NL80211_IFTYPE_ADHOC))
1581 iwl_mvm_tcm_rm_vif(mvm, vif);
1582
1583 mutex_lock(&mvm->mutex);
1584
1585 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data,
1586 lockdep_is_held(&mvm->mutex));
1587 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1588 if (probe_data)
1589 kfree_rcu(probe_data, rcu_head);
1590
1591 if (mvm->bf_allowed_vif == mvmvif) {
1592 mvm->bf_allowed_vif = NULL;
1593 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1594 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1595 }
1596
1597 if (vif->bss_conf.ftm_responder)
1598 memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats));
1599
1600 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1601
1602 /*
1603 * For AP/GO interface, the tear down of the resources allocated to the
1604 * interface is be handled as part of the stop_ap flow.
1605 */
1606 if (vif->type == NL80211_IFTYPE_AP ||
1607 vif->type == NL80211_IFTYPE_ADHOC) {
1608 #ifdef CONFIG_NL80211_TESTMODE
1609 if (vif == mvm->noa_vif) {
1610 mvm->noa_vif = NULL;
1611 mvm->noa_duration = 0;
1612 }
1613 #endif
1614 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1615 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1616 goto out_release;
1617 }
1618
1619 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1620 mvm->p2p_device_vif = NULL;
1621 iwl_mvm_rm_p2p_bcast_sta(mvm, vif);
1622 iwl_mvm_binding_remove_vif(mvm, vif);
1623 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1624 mvmvif->phy_ctxt = NULL;
1625 }
1626
1627 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1628 mvm->vif_count--;
1629
1630 iwl_mvm_power_update_mac(mvm);
1631 iwl_mvm_mac_ctxt_remove(mvm, vif);
1632
1633 RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL);
1634
1635 if (vif->type == NL80211_IFTYPE_MONITOR)
1636 mvm->monitor_on = false;
1637
1638 out_release:
1639 mutex_unlock(&mvm->mutex);
1640 }
1641
1642 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1643 {
1644 return 0;
1645 }
1646
1647 struct iwl_mvm_mc_iter_data {
1648 struct iwl_mvm *mvm;
1649 int port_id;
1650 };
1651
1652 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1653 struct ieee80211_vif *vif)
1654 {
1655 struct iwl_mvm_mc_iter_data *data = _data;
1656 struct iwl_mvm *mvm = data->mvm;
1657 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1658 struct iwl_host_cmd hcmd = {
1659 .id = MCAST_FILTER_CMD,
1660 .flags = CMD_ASYNC,
1661 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1662 };
1663 int ret, len;
1664
1665 /* if we don't have free ports, mcast frames will be dropped */
1666 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1667 return;
1668
1669 if (vif->type != NL80211_IFTYPE_STATION ||
1670 !vif->bss_conf.assoc)
1671 return;
1672
1673 cmd->port_id = data->port_id++;
1674 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1675 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1676
1677 hcmd.len[0] = len;
1678 hcmd.data[0] = cmd;
1679
1680 ret = iwl_mvm_send_cmd(mvm, &hcmd);
1681 if (ret)
1682 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1683 }
1684
1685 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1686 {
1687 struct iwl_mvm_mc_iter_data iter_data = {
1688 .mvm = mvm,
1689 };
1690
1691 lockdep_assert_held(&mvm->mutex);
1692
1693 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1694 return;
1695
1696 ieee80211_iterate_active_interfaces_atomic(
1697 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1698 iwl_mvm_mc_iface_iterator, &iter_data);
1699 }
1700
1701 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1702 struct netdev_hw_addr_list *mc_list)
1703 {
1704 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1705 struct iwl_mcast_filter_cmd *cmd;
1706 struct netdev_hw_addr *addr;
1707 int addr_count;
1708 bool pass_all;
1709 int len;
1710
1711 addr_count = netdev_hw_addr_list_count(mc_list);
1712 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1713 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1714 if (pass_all)
1715 addr_count = 0;
1716
1717 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1718 cmd = kzalloc(len, GFP_ATOMIC);
1719 if (!cmd)
1720 return 0;
1721
1722 if (pass_all) {
1723 cmd->pass_all = 1;
1724 return (u64)(unsigned long)cmd;
1725 }
1726
1727 netdev_hw_addr_list_for_each(addr, mc_list) {
1728 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1729 cmd->count, addr->addr);
1730 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1731 addr->addr, ETH_ALEN);
1732 cmd->count++;
1733 }
1734
1735 return (u64)(unsigned long)cmd;
1736 }
1737
1738 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1739 unsigned int changed_flags,
1740 unsigned int *total_flags,
1741 u64 multicast)
1742 {
1743 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1744 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1745
1746 mutex_lock(&mvm->mutex);
1747
1748 /* replace previous configuration */
1749 kfree(mvm->mcast_filter_cmd);
1750 mvm->mcast_filter_cmd = cmd;
1751
1752 if (!cmd)
1753 goto out;
1754
1755 if (changed_flags & FIF_ALLMULTI)
1756 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);
1757
1758 if (cmd->pass_all)
1759 cmd->count = 0;
1760
1761 iwl_mvm_recalc_multicast(mvm);
1762 out:
1763 mutex_unlock(&mvm->mutex);
1764 *total_flags = 0;
1765 }
1766
1767 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1768 struct ieee80211_vif *vif,
1769 unsigned int filter_flags,
1770 unsigned int changed_flags)
1771 {
1772 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1773
1774 /* We support only filter for probe requests */
1775 if (!(changed_flags & FIF_PROBE_REQ))
1776 return;
1777
1778 /* Supported only for p2p client interfaces */
1779 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1780 !vif->p2p)
1781 return;
1782
1783 mutex_lock(&mvm->mutex);
1784 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1785 mutex_unlock(&mvm->mutex);
1786 }
1787
1788 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1789 struct iwl_bcast_iter_data {
1790 struct iwl_mvm *mvm;
1791 struct iwl_bcast_filter_cmd *cmd;
1792 u8 current_filter;
1793 };
1794
1795 static void
1796 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1797 const struct iwl_fw_bcast_filter *in_filter,
1798 struct iwl_fw_bcast_filter *out_filter)
1799 {
1800 struct iwl_fw_bcast_filter_attr *attr;
1801 int i;
1802
1803 memcpy(out_filter, in_filter, sizeof(*out_filter));
1804
1805 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1806 attr = &out_filter->attrs[i];
1807
1808 if (!attr->mask)
1809 break;
1810
1811 switch (attr->reserved1) {
1812 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1813 if (vif->bss_conf.arp_addr_cnt != 1) {
1814 attr->mask = 0;
1815 continue;
1816 }
1817
1818 attr->val = vif->bss_conf.arp_addr_list[0];
1819 break;
1820 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1821 attr->val = *(__be32 *)&vif->addr[2];
1822 break;
1823 default:
1824 break;
1825 }
1826 attr->reserved1 = 0;
1827 out_filter->num_attrs++;
1828 }
1829 }
1830
1831 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1832 struct ieee80211_vif *vif)
1833 {
1834 struct iwl_bcast_iter_data *data = _data;
1835 struct iwl_mvm *mvm = data->mvm;
1836 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1837 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1838 struct iwl_fw_bcast_mac *bcast_mac;
1839 int i;
1840
1841 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1842 return;
1843
1844 bcast_mac = &cmd->macs[mvmvif->id];
1845
1846 /*
1847 * enable filtering only for associated stations, but not for P2P
1848 * Clients
1849 */
1850 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1851 !vif->bss_conf.assoc)
1852 return;
1853
1854 bcast_mac->default_discard = 1;
1855
1856 /* copy all configured filters */
1857 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1858 /*
1859 * Make sure we don't exceed our filters limit.
1860 * if there is still a valid filter to be configured,
1861 * be on the safe side and just allow bcast for this mac.
1862 */
1863 if (WARN_ON_ONCE(data->current_filter >=
1864 ARRAY_SIZE(cmd->filters))) {
1865 bcast_mac->default_discard = 0;
1866 bcast_mac->attached_filters = 0;
1867 break;
1868 }
1869
1870 iwl_mvm_set_bcast_filter(vif,
1871 &mvm->bcast_filters[i],
1872 &cmd->filters[data->current_filter]);
1873
1874 /* skip current filter if it contains no attributes */
1875 if (!cmd->filters[data->current_filter].num_attrs)
1876 continue;
1877
1878 /* attach the filter to current mac */
1879 bcast_mac->attached_filters |=
1880 cpu_to_le16(BIT(data->current_filter));
1881
1882 data->current_filter++;
1883 }
1884 }
1885
1886 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1887 struct iwl_bcast_filter_cmd *cmd)
1888 {
1889 struct iwl_bcast_iter_data iter_data = {
1890 .mvm = mvm,
1891 .cmd = cmd,
1892 };
1893
1894 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1895 return false;
1896
1897 memset(cmd, 0, sizeof(*cmd));
1898 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1899 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1900
1901 #ifdef CONFIG_IWLWIFI_DEBUGFS
1902 /* use debugfs filters/macs if override is configured */
1903 if (mvm->dbgfs_bcast_filtering.override) {
1904 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1905 sizeof(cmd->filters));
1906 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1907 sizeof(cmd->macs));
1908 return true;
1909 }
1910 #endif
1911
1912 /* if no filters are configured, do nothing */
1913 if (!mvm->bcast_filters)
1914 return false;
1915
1916 /* configure and attach these filters for each associated sta vif */
1917 ieee80211_iterate_active_interfaces(
1918 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1919 iwl_mvm_bcast_filter_iterator, &iter_data);
1920
1921 return true;
1922 }
1923
1924 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1925 {
1926 struct iwl_bcast_filter_cmd cmd;
1927
1928 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1929 return 0;
1930
1931 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1932 return 0;
1933
1934 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1935 sizeof(cmd), &cmd);
1936 }
1937 #else
1938 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1939 {
1940 return 0;
1941 }
1942 #endif
1943
1944 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1945 struct ieee80211_vif *vif)
1946 {
1947 struct iwl_mu_group_mgmt_cmd cmd = {};
1948
1949 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1950 WLAN_MEMBERSHIP_LEN);
1951 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1952 WLAN_USER_POSITION_LEN);
1953
1954 return iwl_mvm_send_cmd_pdu(mvm,
1955 WIDE_ID(DATA_PATH_GROUP,
1956 UPDATE_MU_GROUPS_CMD),
1957 0, sizeof(cmd), &cmd);
1958 }
1959
1960 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1961 struct ieee80211_vif *vif)
1962 {
1963 if (vif->mu_mimo_owner) {
1964 struct iwl_mu_group_mgmt_notif *notif = _data;
1965
1966 /*
1967 * MU-MIMO Group Id action frame is little endian. We treat
1968 * the data received from firmware as if it came from the
1969 * action frame, so no conversion is needed.
1970 */
1971 ieee80211_update_mu_groups(vif,
1972 (u8 *)&notif->membership_status,
1973 (u8 *)&notif->user_position);
1974 }
1975 }
1976
1977 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1978 struct iwl_rx_cmd_buffer *rxb)
1979 {
1980 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1981 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1982
1983 ieee80211_iterate_active_interfaces_atomic(
1984 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1985 iwl_mvm_mu_mimo_iface_iterator, notif);
1986 }
1987
1988 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit)
1989 {
1990 u8 byte_num = ppe_pos_bit / 8;
1991 u8 bit_num = ppe_pos_bit % 8;
1992 u8 residue_bits;
1993 u8 res;
1994
1995 if (bit_num <= 5)
1996 return (ppe[byte_num] >> bit_num) &
1997 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1);
1998
1999 /*
2000 * If bit_num > 5, we have to combine bits with next byte.
2001 * Calculate how many bits we need to take from current byte (called
2002 * here "residue_bits"), and add them to bits from next byte.
2003 */
2004
2005 residue_bits = 8 - bit_num;
2006
2007 res = (ppe[byte_num + 1] &
2008 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) <<
2009 residue_bits;
2010 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1);
2011
2012 return res;
2013 }
2014
2015 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm,
2016 struct ieee80211_vif *vif, u8 sta_id)
2017 {
2018 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2019 struct iwl_he_sta_context_cmd sta_ctxt_cmd = {
2020 .sta_id = sta_id,
2021 .tid_limit = IWL_MAX_TID_COUNT,
2022 .bss_color = vif->bss_conf.he_bss_color.color,
2023 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext,
2024 .frame_time_rts_th =
2025 cpu_to_le16(vif->bss_conf.frame_time_rts_th),
2026 };
2027 int size = fw_has_api(&mvm->fw->ucode_capa,
2028 IWL_UCODE_TLV_API_MBSSID_HE) ?
2029 sizeof(sta_ctxt_cmd) :
2030 sizeof(struct iwl_he_sta_context_cmd_v1);
2031 struct ieee80211_sta *sta;
2032 u32 flags;
2033 int i;
2034
2035 rcu_read_lock();
2036
2037 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]);
2038 if (IS_ERR_OR_NULL(sta)) {
2039 rcu_read_unlock();
2040 WARN(1, "Can't find STA to configure HE\n");
2041 return;
2042 }
2043
2044 if (!sta->he_cap.has_he) {
2045 rcu_read_unlock();
2046 return;
2047 }
2048
2049 flags = 0;
2050
2051 /* Block 26-tone RU OFDMA transmissions */
2052 if (mvmvif->he_ru_2mhz_block)
2053 flags |= STA_CTXT_HE_RU_2MHZ_BLOCK;
2054
2055 /* HTC flags */
2056 if (sta->he_cap.he_cap_elem.mac_cap_info[0] &
2057 IEEE80211_HE_MAC_CAP0_HTC_HE)
2058 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT);
2059 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] &
2060 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) ||
2061 (sta->he_cap.he_cap_elem.mac_cap_info[2] &
2062 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) {
2063 u8 link_adap =
2064 ((sta->he_cap.he_cap_elem.mac_cap_info[2] &
2065 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) +
2066 (sta->he_cap.he_cap_elem.mac_cap_info[1] &
2067 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION);
2068
2069 if (link_adap == 2)
2070 sta_ctxt_cmd.htc_flags |=
2071 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED);
2072 else if (link_adap == 3)
2073 sta_ctxt_cmd.htc_flags |=
2074 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH);
2075 }
2076 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR)
2077 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP);
2078 if (sta->he_cap.he_cap_elem.mac_cap_info[3] &
2079 IEEE80211_HE_MAC_CAP3_OMI_CONTROL)
2080 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP);
2081 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR)
2082 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP);
2083
2084 /*
2085 * Initialize the PPE thresholds to "None" (7), as described in Table
2086 * 9-262ac of 80211.ax/D3.0.
2087 */
2088 memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext));
2089
2090 /* If PPE Thresholds exist, parse them into a FW-familiar format. */
2091 if (sta->he_cap.he_cap_elem.phy_cap_info[6] &
2092 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) {
2093 u8 nss = (sta->he_cap.ppe_thres[0] &
2094 IEEE80211_PPE_THRES_NSS_MASK) + 1;
2095 u8 ru_index_bitmap =
2096 (sta->he_cap.ppe_thres[0] &
2097 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >>
2098 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS;
2099 u8 *ppe = &sta->he_cap.ppe_thres[0];
2100 u8 ppe_pos_bit = 7; /* Starting after PPE header */
2101
2102 /*
2103 * FW currently supports only nss == MAX_HE_SUPP_NSS
2104 *
2105 * If nss > MAX: we can ignore values we don't support
2106 * If nss < MAX: we can set zeros in other streams
2107 */
2108 if (nss > MAX_HE_SUPP_NSS) {
2109 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss,
2110 MAX_HE_SUPP_NSS);
2111 nss = MAX_HE_SUPP_NSS;
2112 }
2113
2114 for (i = 0; i < nss; i++) {
2115 u8 ru_index_tmp = ru_index_bitmap << 1;
2116 u8 bw;
2117
2118 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) {
2119 ru_index_tmp >>= 1;
2120 if (!(ru_index_tmp & 1))
2121 continue;
2122
2123 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] =
2124 iwl_mvm_he_get_ppe_val(ppe,
2125 ppe_pos_bit);
2126 ppe_pos_bit +=
2127 IEEE80211_PPE_THRES_INFO_PPET_SIZE;
2128 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] =
2129 iwl_mvm_he_get_ppe_val(ppe,
2130 ppe_pos_bit);
2131 ppe_pos_bit +=
2132 IEEE80211_PPE_THRES_INFO_PPET_SIZE;
2133 }
2134 }
2135
2136 flags |= STA_CTXT_HE_PACKET_EXT;
2137 } else if ((sta->he_cap.he_cap_elem.phy_cap_info[9] &
2138 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) !=
2139 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_RESERVED) {
2140 int low_th = -1;
2141 int high_th = -1;
2142
2143 /* Take the PPE thresholds from the nominal padding info */
2144 switch (sta->he_cap.he_cap_elem.phy_cap_info[9] &
2145 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) {
2146 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_0US:
2147 low_th = IWL_HE_PKT_EXT_NONE;
2148 high_th = IWL_HE_PKT_EXT_NONE;
2149 break;
2150 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_8US:
2151 low_th = IWL_HE_PKT_EXT_BPSK;
2152 high_th = IWL_HE_PKT_EXT_NONE;
2153 break;
2154 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_16US:
2155 low_th = IWL_HE_PKT_EXT_NONE;
2156 high_th = IWL_HE_PKT_EXT_BPSK;
2157 break;
2158 }
2159
2160 /* Set the PPE thresholds accordingly */
2161 if (low_th >= 0 && high_th >= 0) {
2162 struct iwl_he_pkt_ext *pkt_ext =
2163 (struct iwl_he_pkt_ext *)&sta_ctxt_cmd.pkt_ext;
2164
2165 for (i = 0; i < MAX_HE_SUPP_NSS; i++) {
2166 u8 bw;
2167
2168 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX;
2169 bw++) {
2170 pkt_ext->pkt_ext_qam_th[i][bw][0] =
2171 low_th;
2172 pkt_ext->pkt_ext_qam_th[i][bw][1] =
2173 high_th;
2174 }
2175 }
2176
2177 flags |= STA_CTXT_HE_PACKET_EXT;
2178 }
2179 }
2180 rcu_read_unlock();
2181
2182 /* Mark MU EDCA as enabled, unless none detected on some AC */
2183 flags |= STA_CTXT_HE_MU_EDCA_CW;
2184 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
2185 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca =
2186 &mvmvif->queue_params[i].mu_edca_param_rec;
2187 u8 ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
2188
2189 if (!mvmvif->queue_params[i].mu_edca) {
2190 flags &= ~STA_CTXT_HE_MU_EDCA_CW;
2191 break;
2192 }
2193
2194 sta_ctxt_cmd.trig_based_txf[ac].cwmin =
2195 cpu_to_le16(mu_edca->ecw_min_max & 0xf);
2196 sta_ctxt_cmd.trig_based_txf[ac].cwmax =
2197 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4);
2198 sta_ctxt_cmd.trig_based_txf[ac].aifsn =
2199 cpu_to_le16(mu_edca->aifsn);
2200 sta_ctxt_cmd.trig_based_txf[ac].mu_time =
2201 cpu_to_le16(mu_edca->mu_edca_timer);
2202 }
2203
2204 if (vif->bss_conf.multi_sta_back_32bit)
2205 flags |= STA_CTXT_HE_32BIT_BA_BITMAP;
2206
2207 if (vif->bss_conf.ack_enabled)
2208 flags |= STA_CTXT_HE_ACK_ENABLED;
2209
2210 if (vif->bss_conf.uora_exists) {
2211 flags |= STA_CTXT_HE_TRIG_RND_ALLOC;
2212
2213 sta_ctxt_cmd.rand_alloc_ecwmin =
2214 vif->bss_conf.uora_ocw_range & 0x7;
2215 sta_ctxt_cmd.rand_alloc_ecwmax =
2216 (vif->bss_conf.uora_ocw_range >> 3) & 0x7;
2217 }
2218
2219 if (vif->bss_conf.nontransmitted) {
2220 flags |= STA_CTXT_HE_REF_BSSID_VALID;
2221 ether_addr_copy(sta_ctxt_cmd.ref_bssid_addr,
2222 vif->bss_conf.transmitter_bssid);
2223 sta_ctxt_cmd.max_bssid_indicator =
2224 vif->bss_conf.bssid_indicator;
2225 sta_ctxt_cmd.bssid_index = vif->bss_conf.bssid_index;
2226 sta_ctxt_cmd.ema_ap = vif->bss_conf.ema_ap;
2227 sta_ctxt_cmd.profile_periodicity =
2228 vif->bss_conf.profile_periodicity;
2229 }
2230
2231 sta_ctxt_cmd.flags = cpu_to_le32(flags);
2232
2233 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD,
2234 DATA_PATH_GROUP, 0),
2235 0, size, &sta_ctxt_cmd))
2236 IWL_ERR(mvm, "Failed to config FW to work HE!\n");
2237 }
2238
2239 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2240 struct ieee80211_vif *vif,
2241 struct ieee80211_bss_conf *bss_conf,
2242 u32 changes)
2243 {
2244 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2245 int ret;
2246
2247 /*
2248 * Re-calculate the tsf id, as the master-slave relations depend on the
2249 * beacon interval, which was not known when the station interface was
2250 * added.
2251 */
2252 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) {
2253 if (vif->bss_conf.he_support &&
2254 !iwlwifi_mod_params.disable_11ax)
2255 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
2256
2257 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2258 }
2259
2260 /* Update MU EDCA params */
2261 if (changes & BSS_CHANGED_QOS && mvmvif->associated &&
2262 bss_conf->assoc && vif->bss_conf.he_support &&
2263 !iwlwifi_mod_params.disable_11ax)
2264 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
2265
2266 /*
2267 * If we're not associated yet, take the (new) BSSID before associating
2268 * so the firmware knows. If we're already associated, then use the old
2269 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2270 * branch for disassociation below.
2271 */
2272 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2273 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2274
2275 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2276 if (ret)
2277 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2278
2279 /* after sending it once, adopt mac80211 data */
2280 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2281 mvmvif->associated = bss_conf->assoc;
2282
2283 if (changes & BSS_CHANGED_ASSOC) {
2284 if (bss_conf->assoc) {
2285 /* clear statistics to get clean beacon counter */
2286 iwl_mvm_request_statistics(mvm, true);
2287 memset(&mvmvif->beacon_stats, 0,
2288 sizeof(mvmvif->beacon_stats));
2289
2290 /* add quota for this interface */
2291 ret = iwl_mvm_update_quotas(mvm, true, NULL);
2292 if (ret) {
2293 IWL_ERR(mvm, "failed to update quotas\n");
2294 return;
2295 }
2296
2297 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2298 &mvm->status) &&
2299 !fw_has_capa(&mvm->fw->ucode_capa,
2300 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) {
2301 /*
2302 * If we're restarting then the firmware will
2303 * obviously have lost synchronisation with
2304 * the AP. It will attempt to synchronise by
2305 * itself, but we can make it more reliable by
2306 * scheduling a session protection time event.
2307 *
2308 * The firmware needs to receive a beacon to
2309 * catch up with synchronisation, use 110% of
2310 * the beacon interval.
2311 *
2312 * Set a large maximum delay to allow for more
2313 * than a single interface.
2314 *
2315 * For new firmware versions, rely on the
2316 * firmware. This is relevant for DCM scenarios
2317 * only anyway.
2318 */
2319 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2320 iwl_mvm_protect_session(mvm, vif, dur, dur,
2321 5 * dur, false);
2322 }
2323
2324 iwl_mvm_sf_update(mvm, vif, false);
2325 iwl_mvm_power_vif_assoc(mvm, vif);
2326 if (vif->p2p) {
2327 iwl_mvm_update_smps(mvm, vif,
2328 IWL_MVM_SMPS_REQ_PROT,
2329 IEEE80211_SMPS_DYNAMIC);
2330 }
2331 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
2332 /*
2333 * If update fails - SF might be running in associated
2334 * mode while disassociated - which is forbidden.
2335 */
2336 ret = iwl_mvm_sf_update(mvm, vif, false);
2337 WARN_ONCE(ret &&
2338 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
2339 &mvm->status),
2340 "Failed to update SF upon disassociation\n");
2341
2342 /*
2343 * If we get an assert during the connection (after the
2344 * station has been added, but before the vif is set
2345 * to associated), mac80211 will re-add the station and
2346 * then configure the vif. Since the vif is not
2347 * associated, we would remove the station here and
2348 * this would fail the recovery.
2349 */
2350 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2351 &mvm->status)) {
2352 /*
2353 * Remove AP station now that
2354 * the MAC is unassoc
2355 */
2356 ret = iwl_mvm_rm_sta_id(mvm, vif,
2357 mvmvif->ap_sta_id);
2358 if (ret)
2359 IWL_ERR(mvm,
2360 "failed to remove AP station\n");
2361
2362 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
2363 }
2364
2365 /* remove quota for this interface */
2366 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2367 if (ret)
2368 IWL_ERR(mvm, "failed to update quotas\n");
2369
2370 /* this will take the cleared BSSID from bss_conf */
2371 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2372 if (ret)
2373 IWL_ERR(mvm,
2374 "failed to update MAC %pM (clear after unassoc)\n",
2375 vif->addr);
2376 }
2377
2378 /*
2379 * The firmware tracks the MU-MIMO group on its own.
2380 * However, on HW restart we should restore this data.
2381 */
2382 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2383 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2384 ret = iwl_mvm_update_mu_groups(mvm, vif);
2385 if (ret)
2386 IWL_ERR(mvm,
2387 "failed to update VHT MU_MIMO groups\n");
2388 }
2389
2390 iwl_mvm_recalc_multicast(mvm);
2391 iwl_mvm_configure_bcast_filter(mvm);
2392
2393 /* reset rssi values */
2394 mvmvif->bf_data.ave_beacon_signal = 0;
2395
2396 iwl_mvm_bt_coex_vif_change(mvm);
2397 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2398 IEEE80211_SMPS_AUTOMATIC);
2399 if (fw_has_capa(&mvm->fw->ucode_capa,
2400 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2401 iwl_mvm_config_scan(mvm);
2402 }
2403
2404 if (changes & BSS_CHANGED_BEACON_INFO) {
2405 /*
2406 * We received a beacon from the associated AP so
2407 * remove the session protection.
2408 * A firmware with the new API will remove it automatically.
2409 */
2410 if (!fw_has_capa(&mvm->fw->ucode_capa,
2411 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD))
2412 iwl_mvm_stop_session_protection(mvm, vif);
2413
2414 iwl_mvm_sf_update(mvm, vif, false);
2415 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2416 }
2417
2418 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2419 /*
2420 * Send power command on every beacon change,
2421 * because we may have not enabled beacon abort yet.
2422 */
2423 BSS_CHANGED_BEACON_INFO)) {
2424 ret = iwl_mvm_power_update_mac(mvm);
2425 if (ret)
2426 IWL_ERR(mvm, "failed to update power mode\n");
2427 }
2428
2429 if (changes & BSS_CHANGED_TXPOWER) {
2430 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2431 bss_conf->txpower);
2432 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2433 }
2434
2435 if (changes & BSS_CHANGED_CQM) {
2436 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2437 /* reset cqm events tracking */
2438 mvmvif->bf_data.last_cqm_event = 0;
2439 if (mvmvif->bf_data.bf_enabled) {
2440 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2441 if (ret)
2442 IWL_ERR(mvm,
2443 "failed to update CQM thresholds\n");
2444 }
2445 }
2446
2447 if (changes & BSS_CHANGED_ARP_FILTER) {
2448 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2449 iwl_mvm_configure_bcast_filter(mvm);
2450 }
2451 }
2452
2453 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2454 struct ieee80211_vif *vif)
2455 {
2456 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2457 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2458 int ret, i;
2459
2460 mutex_lock(&mvm->mutex);
2461
2462 /* Send the beacon template */
2463 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2464 if (ret)
2465 goto out_unlock;
2466
2467 /*
2468 * Re-calculate the tsf id, as the master-slave relations depend on the
2469 * beacon interval, which was not known when the AP interface was added.
2470 */
2471 if (vif->type == NL80211_IFTYPE_AP)
2472 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2473
2474 mvmvif->ap_assoc_sta_count = 0;
2475
2476 /* Add the mac context */
2477 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2478 if (ret)
2479 goto out_unlock;
2480
2481 /* Perform the binding */
2482 ret = iwl_mvm_binding_add_vif(mvm, vif);
2483 if (ret)
2484 goto out_remove;
2485
2486 /*
2487 * This is not very nice, but the simplest:
2488 * For older FWs adding the mcast sta before the bcast station may
2489 * cause assert 0x2b00.
2490 * This is fixed in later FW so make the order of removal depend on
2491 * the TLV
2492 */
2493 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2494 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2495 if (ret)
2496 goto out_unbind;
2497 /*
2498 * Send the bcast station. At this stage the TBTT and DTIM time
2499 * events are added and applied to the scheduler
2500 */
2501 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2502 if (ret) {
2503 iwl_mvm_rm_mcast_sta(mvm, vif);
2504 goto out_unbind;
2505 }
2506 } else {
2507 /*
2508 * Send the bcast station. At this stage the TBTT and DTIM time
2509 * events are added and applied to the scheduler
2510 */
2511 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2512 if (ret)
2513 goto out_unbind;
2514 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2515 if (ret) {
2516 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2517 goto out_unbind;
2518 }
2519 }
2520
2521 /* must be set before quota calculations */
2522 mvmvif->ap_ibss_active = true;
2523
2524 /* send all the early keys to the device now */
2525 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) {
2526 struct ieee80211_key_conf *key = mvmvif->ap_early_keys[i];
2527
2528 if (!key)
2529 continue;
2530
2531 mvmvif->ap_early_keys[i] = NULL;
2532
2533 ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key);
2534 if (ret)
2535 goto out_quota_failed;
2536 }
2537
2538 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) {
2539 iwl_mvm_vif_set_low_latency(mvmvif, true,
2540 LOW_LATENCY_VIF_TYPE);
2541 iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id);
2542 }
2543
2544 /* power updated needs to be done before quotas */
2545 iwl_mvm_power_update_mac(mvm);
2546
2547 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2548 if (ret)
2549 goto out_quota_failed;
2550
2551 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2552 if (vif->p2p && mvm->p2p_device_vif)
2553 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2554
2555 iwl_mvm_bt_coex_vif_change(mvm);
2556
2557 /* we don't support TDLS during DCM */
2558 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2559 iwl_mvm_teardown_tdls_peers(mvm);
2560
2561 iwl_mvm_ftm_restart_responder(mvm, vif);
2562
2563 goto out_unlock;
2564
2565 out_quota_failed:
2566 iwl_mvm_power_update_mac(mvm);
2567 mvmvif->ap_ibss_active = false;
2568 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2569 iwl_mvm_rm_mcast_sta(mvm, vif);
2570 out_unbind:
2571 iwl_mvm_binding_remove_vif(mvm, vif);
2572 out_remove:
2573 iwl_mvm_mac_ctxt_remove(mvm, vif);
2574 out_unlock:
2575 mutex_unlock(&mvm->mutex);
2576 return ret;
2577 }
2578
2579 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2580 struct ieee80211_vif *vif)
2581 {
2582 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2583 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2584
2585 iwl_mvm_prepare_mac_removal(mvm, vif);
2586
2587 mutex_lock(&mvm->mutex);
2588
2589 /* Handle AP stop while in CSA */
2590 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2591 iwl_mvm_remove_time_event(mvm, mvmvif,
2592 &mvmvif->time_event_data);
2593 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2594 mvmvif->csa_countdown = false;
2595 }
2596
2597 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2598 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2599 mvm->csa_tx_block_bcn_timeout = 0;
2600 }
2601
2602 mvmvif->ap_ibss_active = false;
2603 mvm->ap_last_beacon_gp2 = 0;
2604
2605 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) {
2606 iwl_mvm_vif_set_low_latency(mvmvif, false,
2607 LOW_LATENCY_VIF_TYPE);
2608 iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id);
2609 }
2610
2611 iwl_mvm_bt_coex_vif_change(mvm);
2612
2613 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2614 if (vif->p2p && mvm->p2p_device_vif)
2615 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2616
2617 iwl_mvm_update_quotas(mvm, false, NULL);
2618
2619 /*
2620 * This is not very nice, but the simplest:
2621 * For older FWs removing the mcast sta before the bcast station may
2622 * cause assert 0x2b00.
2623 * This is fixed in later FW (which will stop beaconing when removing
2624 * bcast station).
2625 * So make the order of removal depend on the TLV
2626 */
2627 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2628 iwl_mvm_rm_mcast_sta(mvm, vif);
2629 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2630 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2631 iwl_mvm_rm_mcast_sta(mvm, vif);
2632 iwl_mvm_binding_remove_vif(mvm, vif);
2633
2634 iwl_mvm_power_update_mac(mvm);
2635
2636 iwl_mvm_mac_ctxt_remove(mvm, vif);
2637
2638 mutex_unlock(&mvm->mutex);
2639 }
2640
2641 static void
2642 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2643 struct ieee80211_vif *vif,
2644 struct ieee80211_bss_conf *bss_conf,
2645 u32 changes)
2646 {
2647 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2648
2649 /* Changes will be applied when the AP/IBSS is started */
2650 if (!mvmvif->ap_ibss_active)
2651 return;
2652
2653 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2654 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2655 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2656 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2657
2658 /* Need to send a new beacon template to the FW */
2659 if (changes & BSS_CHANGED_BEACON &&
2660 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2661 IWL_WARN(mvm, "Failed updating beacon data\n");
2662
2663 if (changes & BSS_CHANGED_TXPOWER) {
2664 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2665 bss_conf->txpower);
2666 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2667 }
2668
2669 if (changes & BSS_CHANGED_FTM_RESPONDER) {
2670 int ret = iwl_mvm_ftm_start_responder(mvm, vif);
2671
2672 if (ret)
2673 IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n",
2674 ret);
2675 }
2676
2677 }
2678
2679 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2680 struct ieee80211_vif *vif,
2681 struct ieee80211_bss_conf *bss_conf,
2682 u32 changes)
2683 {
2684 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2685
2686 mutex_lock(&mvm->mutex);
2687
2688 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2689 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2690
2691 switch (vif->type) {
2692 case NL80211_IFTYPE_STATION:
2693 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2694 break;
2695 case NL80211_IFTYPE_AP:
2696 case NL80211_IFTYPE_ADHOC:
2697 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2698 break;
2699 case NL80211_IFTYPE_MONITOR:
2700 if (changes & BSS_CHANGED_MU_GROUPS)
2701 iwl_mvm_update_mu_groups(mvm, vif);
2702 break;
2703 default:
2704 /* shouldn't happen */
2705 WARN_ON_ONCE(1);
2706 }
2707
2708 mutex_unlock(&mvm->mutex);
2709 }
2710
2711 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2712 struct ieee80211_vif *vif,
2713 struct ieee80211_scan_request *hw_req)
2714 {
2715 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2716 int ret;
2717
2718 if (hw_req->req.n_channels == 0 ||
2719 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2720 return -EINVAL;
2721
2722 mutex_lock(&mvm->mutex);
2723 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2724 mutex_unlock(&mvm->mutex);
2725
2726 return ret;
2727 }
2728
2729 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2730 struct ieee80211_vif *vif)
2731 {
2732 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2733
2734 mutex_lock(&mvm->mutex);
2735
2736 /* Due to a race condition, it's possible that mac80211 asks
2737 * us to stop a hw_scan when it's already stopped. This can
2738 * happen, for instance, if we stopped the scan ourselves,
2739 * called ieee80211_scan_completed() and the userspace called
2740 * cancel scan scan before ieee80211_scan_work() could run.
2741 * To handle that, simply return if the scan is not running.
2742 */
2743 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2744 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2745
2746 mutex_unlock(&mvm->mutex);
2747 }
2748
2749 static void
2750 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2751 struct ieee80211_sta *sta, u16 tids,
2752 int num_frames,
2753 enum ieee80211_frame_release_type reason,
2754 bool more_data)
2755 {
2756 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2757
2758 /* Called when we need to transmit (a) frame(s) from mac80211 */
2759
2760 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2761 tids, more_data, false);
2762 }
2763
2764 static void
2765 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2766 struct ieee80211_sta *sta, u16 tids,
2767 int num_frames,
2768 enum ieee80211_frame_release_type reason,
2769 bool more_data)
2770 {
2771 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2772
2773 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2774
2775 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2776 tids, more_data, true);
2777 }
2778
2779 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2780 enum sta_notify_cmd cmd,
2781 struct ieee80211_sta *sta)
2782 {
2783 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2784 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2785 unsigned long txqs = 0, tids = 0;
2786 int tid;
2787
2788 /*
2789 * If we have TVQM then we get too high queue numbers - luckily
2790 * we really shouldn't get here with that because such hardware
2791 * should have firmware supporting buffer station offload.
2792 */
2793 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
2794 return;
2795
2796 spin_lock_bh(&mvmsta->lock);
2797 for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) {
2798 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2799
2800 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2801 continue;
2802
2803 __set_bit(tid_data->txq_id, &txqs);
2804
2805 if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2806 continue;
2807
2808 __set_bit(tid, &tids);
2809 }
2810
2811 switch (cmd) {
2812 case STA_NOTIFY_SLEEP:
2813 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2814 ieee80211_sta_set_buffered(sta, tid, true);
2815
2816 if (txqs)
2817 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2818 /*
2819 * The fw updates the STA to be asleep. Tx packets on the Tx
2820 * queues to this station will not be transmitted. The fw will
2821 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2822 */
2823 break;
2824 case STA_NOTIFY_AWAKE:
2825 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2826 break;
2827
2828 if (txqs)
2829 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2830 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2831 break;
2832 default:
2833 break;
2834 }
2835 spin_unlock_bh(&mvmsta->lock);
2836 }
2837
2838 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2839 struct ieee80211_vif *vif,
2840 enum sta_notify_cmd cmd,
2841 struct ieee80211_sta *sta)
2842 {
2843 __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2844 }
2845
2846 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2847 {
2848 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2849 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2850 struct ieee80211_sta *sta;
2851 struct iwl_mvm_sta *mvmsta;
2852 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2853
2854 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2855 return;
2856
2857 rcu_read_lock();
2858 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2859 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2860 rcu_read_unlock();
2861 return;
2862 }
2863
2864 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2865
2866 if (!mvmsta->vif ||
2867 mvmsta->vif->type != NL80211_IFTYPE_AP) {
2868 rcu_read_unlock();
2869 return;
2870 }
2871
2872 if (mvmsta->sleeping != sleeping) {
2873 mvmsta->sleeping = sleeping;
2874 __iwl_mvm_mac_sta_notify(mvm->hw,
2875 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2876 sta);
2877 ieee80211_sta_ps_transition(sta, sleeping);
2878 }
2879
2880 if (sleeping) {
2881 switch (notif->type) {
2882 case IWL_MVM_PM_EVENT_AWAKE:
2883 case IWL_MVM_PM_EVENT_ASLEEP:
2884 break;
2885 case IWL_MVM_PM_EVENT_UAPSD:
2886 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2887 break;
2888 case IWL_MVM_PM_EVENT_PS_POLL:
2889 ieee80211_sta_pspoll(sta);
2890 break;
2891 default:
2892 break;
2893 }
2894 }
2895
2896 rcu_read_unlock();
2897 }
2898
2899 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2900 struct ieee80211_vif *vif,
2901 struct ieee80211_sta *sta)
2902 {
2903 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2904 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2905
2906 /*
2907 * This is called before mac80211 does RCU synchronisation,
2908 * so here we already invalidate our internal RCU-protected
2909 * station pointer. The rest of the code will thus no longer
2910 * be able to find the station this way, and we don't rely
2911 * on further RCU synchronisation after the sta_state()
2912 * callback deleted the station.
2913 */
2914 mutex_lock(&mvm->mutex);
2915 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2916 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2917 ERR_PTR(-ENOENT));
2918
2919 mutex_unlock(&mvm->mutex);
2920 }
2921
2922 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2923 const u8 *bssid)
2924 {
2925 int i;
2926
2927 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
2928 struct iwl_mvm_tcm_mac *mdata;
2929
2930 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id];
2931 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
2932 mdata->opened_rx_ba_sessions = false;
2933 }
2934
2935 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2936 return;
2937
2938 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2939 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2940 return;
2941 }
2942
2943 if (!vif->p2p &&
2944 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2945 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2946 return;
2947 }
2948
2949 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) {
2950 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) {
2951 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2952 return;
2953 }
2954 }
2955
2956 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2957 }
2958
2959 static void
2960 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2961 struct ieee80211_vif *vif, u8 *peer_addr,
2962 enum nl80211_tdls_operation action)
2963 {
2964 struct iwl_fw_dbg_trigger_tlv *trig;
2965 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2966
2967 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
2968 FW_DBG_TRIGGER_TDLS);
2969 if (!trig)
2970 return;
2971
2972 tdls_trig = (void *)trig->data;
2973
2974 if (!(tdls_trig->action_bitmap & BIT(action)))
2975 return;
2976
2977 if (tdls_trig->peer_mode &&
2978 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2979 return;
2980
2981 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2982 "TDLS event occurred, peer %pM, action %d",
2983 peer_addr, action);
2984 }
2985
2986 struct iwl_mvm_he_obss_narrow_bw_ru_data {
2987 bool tolerated;
2988 };
2989
2990 static void iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy,
2991 struct cfg80211_bss *bss,
2992 void *_data)
2993 {
2994 struct iwl_mvm_he_obss_narrow_bw_ru_data *data = _data;
2995 const struct element *elem;
2996
2997 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, bss->ies->data,
2998 bss->ies->len);
2999
3000 if (!elem || elem->datalen < 10 ||
3001 !(elem->data[10] &
3002 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) {
3003 data->tolerated = false;
3004 }
3005 }
3006
3007 static void iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw *hw,
3008 struct ieee80211_vif *vif)
3009 {
3010 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3011 struct iwl_mvm_he_obss_narrow_bw_ru_data iter_data = {
3012 .tolerated = true,
3013 };
3014
3015 if (!(vif->bss_conf.chandef.chan->flags & IEEE80211_CHAN_RADAR)) {
3016 mvmvif->he_ru_2mhz_block = false;
3017 return;
3018 }
3019
3020 cfg80211_bss_iter(hw->wiphy, &vif->bss_conf.chandef,
3021 iwl_mvm_check_he_obss_narrow_bw_ru_iter,
3022 &iter_data);
3023
3024 /*
3025 * If there is at least one AP on radar channel that cannot
3026 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU.
3027 */
3028 mvmvif->he_ru_2mhz_block = !iter_data.tolerated;
3029 }
3030
3031 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
3032 struct ieee80211_vif *vif,
3033 struct ieee80211_sta *sta,
3034 enum ieee80211_sta_state old_state,
3035 enum ieee80211_sta_state new_state)
3036 {
3037 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3038 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3039 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3040 int ret;
3041
3042 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
3043 sta->addr, old_state, new_state);
3044
3045 /* this would be a mac80211 bug ... but don't crash */
3046 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
3047 return -EINVAL;
3048
3049 /*
3050 * If we are in a STA removal flow and in DQA mode:
3051 *
3052 * This is after the sync_rcu part, so the queues have already been
3053 * flushed. No more TXs on their way in mac80211's path, and no more in
3054 * the queues.
3055 * Also, we won't be getting any new TX frames for this station.
3056 * What we might have are deferred TX frames that need to be taken care
3057 * of.
3058 *
3059 * Drop any still-queued deferred-frame before removing the STA, and
3060 * make sure the worker is no longer handling frames for this STA.
3061 */
3062 if (old_state == IEEE80211_STA_NONE &&
3063 new_state == IEEE80211_STA_NOTEXIST) {
3064 flush_work(&mvm->add_stream_wk);
3065
3066 /*
3067 * No need to make sure deferred TX indication is off since the
3068 * worker will already remove it if it was on
3069 */
3070 }
3071
3072 mutex_lock(&mvm->mutex);
3073 /* track whether or not the station is associated */
3074 mvm_sta->sta_state = new_state;
3075
3076 if (old_state == IEEE80211_STA_NOTEXIST &&
3077 new_state == IEEE80211_STA_NONE) {
3078 /*
3079 * Firmware bug - it'll crash if the beacon interval is less
3080 * than 16. We can't avoid connecting at all, so refuse the
3081 * station state change, this will cause mac80211 to abandon
3082 * attempts to connect to this AP, and eventually wpa_s will
3083 * blacklist the AP...
3084 */
3085 if (vif->type == NL80211_IFTYPE_STATION &&
3086 vif->bss_conf.beacon_int < 16) {
3087 IWL_ERR(mvm,
3088 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
3089 sta->addr, vif->bss_conf.beacon_int);
3090 ret = -EINVAL;
3091 goto out_unlock;
3092 }
3093
3094 if (sta->tdls &&
3095 (vif->p2p ||
3096 iwl_mvm_tdls_sta_count(mvm, NULL) ==
3097 IWL_MVM_TDLS_STA_COUNT ||
3098 iwl_mvm_phy_ctx_count(mvm) > 1)) {
3099 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
3100 ret = -EBUSY;
3101 goto out_unlock;
3102 }
3103
3104 ret = iwl_mvm_add_sta(mvm, vif, sta);
3105 if (sta->tdls && ret == 0) {
3106 iwl_mvm_recalc_tdls_state(mvm, vif, true);
3107 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3108 NL80211_TDLS_SETUP);
3109 }
3110
3111 sta->max_rc_amsdu_len = 1;
3112 } else if (old_state == IEEE80211_STA_NONE &&
3113 new_state == IEEE80211_STA_AUTH) {
3114 /*
3115 * EBS may be disabled due to previous failures reported by FW.
3116 * Reset EBS status here assuming environment has been changed.
3117 */
3118 mvm->last_ebs_successful = true;
3119 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
3120 ret = 0;
3121 } else if (old_state == IEEE80211_STA_AUTH &&
3122 new_state == IEEE80211_STA_ASSOC) {
3123 if (vif->type == NL80211_IFTYPE_AP) {
3124 vif->bss_conf.he_support = sta->he_cap.has_he;
3125 mvmvif->ap_assoc_sta_count++;
3126 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3127 if (vif->bss_conf.he_support &&
3128 !iwlwifi_mod_params.disable_11ax)
3129 iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id);
3130 } else if (vif->type == NL80211_IFTYPE_STATION) {
3131 vif->bss_conf.he_support = sta->he_cap.has_he;
3132
3133 mvmvif->he_ru_2mhz_block = false;
3134 if (sta->he_cap.has_he)
3135 iwl_mvm_check_he_obss_narrow_bw_ru(hw, vif);
3136
3137 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3138 }
3139
3140 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3141 false);
3142 ret = iwl_mvm_update_sta(mvm, vif, sta);
3143 } else if (old_state == IEEE80211_STA_ASSOC &&
3144 new_state == IEEE80211_STA_AUTHORIZED) {
3145 ret = 0;
3146
3147 /* we don't support TDLS during DCM */
3148 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3149 iwl_mvm_teardown_tdls_peers(mvm);
3150
3151 if (sta->tdls)
3152 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3153 NL80211_TDLS_ENABLE_LINK);
3154
3155 /* enable beacon filtering */
3156 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
3157
3158 /*
3159 * Now that the station is authorized, i.e., keys were already
3160 * installed, need to indicate to the FW that
3161 * multicast data frames can be forwarded to the driver
3162 */
3163 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3164
3165 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3166 true);
3167 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
3168 new_state == IEEE80211_STA_ASSOC) {
3169 /* Multicast data frames are no longer allowed */
3170 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3171
3172 /* disable beacon filtering */
3173 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3174 WARN_ON(ret &&
3175 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
3176 &mvm->status));
3177 ret = 0;
3178 } else if (old_state == IEEE80211_STA_ASSOC &&
3179 new_state == IEEE80211_STA_AUTH) {
3180 if (vif->type == NL80211_IFTYPE_AP) {
3181 mvmvif->ap_assoc_sta_count--;
3182 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3183 }
3184 ret = 0;
3185 } else if (old_state == IEEE80211_STA_AUTH &&
3186 new_state == IEEE80211_STA_NONE) {
3187 ret = 0;
3188 } else if (old_state == IEEE80211_STA_NONE &&
3189 new_state == IEEE80211_STA_NOTEXIST) {
3190 ret = iwl_mvm_rm_sta(mvm, vif, sta);
3191 if (sta->tdls) {
3192 iwl_mvm_recalc_tdls_state(mvm, vif, false);
3193 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3194 NL80211_TDLS_DISABLE_LINK);
3195 }
3196
3197 if (unlikely(ret &&
3198 test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
3199 &mvm->status)))
3200 ret = 0;
3201 } else {
3202 ret = -EIO;
3203 }
3204 out_unlock:
3205 mutex_unlock(&mvm->mutex);
3206
3207 if (sta->tdls && ret == 0) {
3208 if (old_state == IEEE80211_STA_NOTEXIST &&
3209 new_state == IEEE80211_STA_NONE)
3210 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3211 else if (old_state == IEEE80211_STA_NONE &&
3212 new_state == IEEE80211_STA_NOTEXIST)
3213 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3214 }
3215
3216 return ret;
3217 }
3218
3219 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3220 {
3221 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3222
3223 mvm->rts_threshold = value;
3224
3225 return 0;
3226 }
3227
3228 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
3229 struct ieee80211_vif *vif,
3230 struct ieee80211_sta *sta, u32 changed)
3231 {
3232 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3233 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3234
3235 if (changed & (IEEE80211_RC_BW_CHANGED |
3236 IEEE80211_RC_SUPP_RATES_CHANGED |
3237 IEEE80211_RC_NSS_CHANGED))
3238 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3239 true);
3240
3241 if (vif->type == NL80211_IFTYPE_STATION &&
3242 changed & IEEE80211_RC_NSS_CHANGED)
3243 iwl_mvm_sf_update(mvm, vif, false);
3244 }
3245
3246 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
3247 struct ieee80211_vif *vif, u16 ac,
3248 const struct ieee80211_tx_queue_params *params)
3249 {
3250 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3251 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3252
3253 mvmvif->queue_params[ac] = *params;
3254
3255 /*
3256 * No need to update right away, we'll get BSS_CHANGED_QOS
3257 * The exception is P2P_DEVICE interface which needs immediate update.
3258 */
3259 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
3260 int ret;
3261
3262 mutex_lock(&mvm->mutex);
3263 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3264 mutex_unlock(&mvm->mutex);
3265 return ret;
3266 }
3267 return 0;
3268 }
3269
3270 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
3271 struct ieee80211_vif *vif,
3272 u16 req_duration)
3273 {
3274 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3275 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
3276 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
3277
3278 if (req_duration > duration)
3279 duration = req_duration;
3280
3281 mutex_lock(&mvm->mutex);
3282 /* Try really hard to protect the session and hear a beacon
3283 * The new session protection command allows us to protect the
3284 * session for a much longer time since the firmware will internally
3285 * create two events: a 300TU one with a very high priority that
3286 * won't be fragmented which should be enough for 99% of the cases,
3287 * and another one (which we configure here to be 900TU long) which
3288 * will have a slightly lower priority, but more importantly, can be
3289 * fragmented so that it'll allow other activities to run.
3290 */
3291 if (fw_has_capa(&mvm->fw->ucode_capa,
3292 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD))
3293 iwl_mvm_schedule_session_protection(mvm, vif, 900,
3294 min_duration, false);
3295 else
3296 iwl_mvm_protect_session(mvm, vif, duration,
3297 min_duration, 500, false);
3298 mutex_unlock(&mvm->mutex);
3299 }
3300
3301 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
3302 struct ieee80211_vif *vif,
3303 struct cfg80211_sched_scan_request *req,
3304 struct ieee80211_scan_ies *ies)
3305 {
3306 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3307
3308 int ret;
3309
3310 mutex_lock(&mvm->mutex);
3311
3312 if (!vif->bss_conf.idle) {
3313 ret = -EBUSY;
3314 goto out;
3315 }
3316
3317 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
3318
3319 out:
3320 mutex_unlock(&mvm->mutex);
3321 return ret;
3322 }
3323
3324 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
3325 struct ieee80211_vif *vif)
3326 {
3327 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3328 int ret;
3329
3330 mutex_lock(&mvm->mutex);
3331
3332 /* Due to a race condition, it's possible that mac80211 asks
3333 * us to stop a sched_scan when it's already stopped. This
3334 * can happen, for instance, if we stopped the scan ourselves,
3335 * called ieee80211_sched_scan_stopped() and the userspace called
3336 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
3337 * could run. To handle this, simply return if the scan is
3338 * not running.
3339 */
3340 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
3341 mutex_unlock(&mvm->mutex);
3342 return 0;
3343 }
3344
3345 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
3346 mutex_unlock(&mvm->mutex);
3347 iwl_mvm_wait_for_async_handlers(mvm);
3348
3349 return ret;
3350 }
3351
3352 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
3353 enum set_key_cmd cmd,
3354 struct ieee80211_vif *vif,
3355 struct ieee80211_sta *sta,
3356 struct ieee80211_key_conf *key)
3357 {
3358 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3359 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3360 struct iwl_mvm_sta *mvmsta;
3361 struct iwl_mvm_key_pn *ptk_pn;
3362 int keyidx = key->keyidx;
3363 int ret, i;
3364 u8 key_offset;
3365
3366 if (iwlwifi_mod_params.swcrypto) {
3367 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
3368 return -EOPNOTSUPP;
3369 }
3370
3371 switch (key->cipher) {
3372 case WLAN_CIPHER_SUITE_TKIP:
3373 if (!mvm->trans->trans_cfg->gen2) {
3374 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3375 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3376 } else if (vif->type == NL80211_IFTYPE_STATION) {
3377 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE;
3378 } else {
3379 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n");
3380 return -EOPNOTSUPP;
3381 }
3382 break;
3383 case WLAN_CIPHER_SUITE_CCMP:
3384 case WLAN_CIPHER_SUITE_GCMP:
3385 case WLAN_CIPHER_SUITE_GCMP_256:
3386 if (!iwl_mvm_has_new_tx_api(mvm))
3387 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3388 break;
3389 case WLAN_CIPHER_SUITE_AES_CMAC:
3390 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3391 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3392 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
3393 break;
3394 case WLAN_CIPHER_SUITE_WEP40:
3395 case WLAN_CIPHER_SUITE_WEP104:
3396 if (vif->type == NL80211_IFTYPE_STATION)
3397 break;
3398 if (iwl_mvm_has_new_tx_api(mvm))
3399 return -EOPNOTSUPP;
3400 /* support HW crypto on TX */
3401 return 0;
3402 default:
3403 /* currently FW supports only one optional cipher scheme */
3404 if (hw->n_cipher_schemes &&
3405 hw->cipher_schemes->cipher == key->cipher)
3406 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3407 else
3408 return -EOPNOTSUPP;
3409 }
3410
3411 switch (cmd) {
3412 case SET_KEY:
3413 if ((vif->type == NL80211_IFTYPE_ADHOC ||
3414 vif->type == NL80211_IFTYPE_AP) && !sta) {
3415 /*
3416 * GTK on AP interface is a TX-only key, return 0;
3417 * on IBSS they're per-station and because we're lazy
3418 * we don't support them for RX, so do the same.
3419 * CMAC/GMAC in AP/IBSS modes must be done in software.
3420 */
3421 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3422 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3423 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3424 ret = -EOPNOTSUPP;
3425 else
3426 ret = 0;
3427
3428 if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
3429 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
3430 !iwl_mvm_has_new_tx_api(mvm)) {
3431 key->hw_key_idx = STA_KEY_IDX_INVALID;
3432 break;
3433 }
3434
3435 if (!mvmvif->ap_ibss_active) {
3436 for (i = 0;
3437 i < ARRAY_SIZE(mvmvif->ap_early_keys);
3438 i++) {
3439 if (!mvmvif->ap_early_keys[i]) {
3440 mvmvif->ap_early_keys[i] = key;
3441 break;
3442 }
3443 }
3444
3445 if (i >= ARRAY_SIZE(mvmvif->ap_early_keys))
3446 ret = -ENOSPC;
3447
3448 break;
3449 }
3450 }
3451
3452 /* During FW restart, in order to restore the state as it was,
3453 * don't try to reprogram keys we previously failed for.
3454 */
3455 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3456 key->hw_key_idx == STA_KEY_IDX_INVALID) {
3457 IWL_DEBUG_MAC80211(mvm,
3458 "skip invalid idx key programming during restart\n");
3459 ret = 0;
3460 break;
3461 }
3462
3463 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3464 sta && iwl_mvm_has_new_rx_api(mvm) &&
3465 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3466 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3467 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3468 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3469 struct ieee80211_key_seq seq;
3470 int tid, q;
3471
3472 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3473 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
3474 ptk_pn = kzalloc(struct_size(ptk_pn, q,
3475 mvm->trans->num_rx_queues),
3476 GFP_KERNEL);
3477 if (!ptk_pn) {
3478 ret = -ENOMEM;
3479 break;
3480 }
3481
3482 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
3483 ieee80211_get_key_rx_seq(key, tid, &seq);
3484 for (q = 0; q < mvm->trans->num_rx_queues; q++)
3485 memcpy(ptk_pn->q[q].pn[tid],
3486 seq.ccmp.pn,
3487 IEEE80211_CCMP_PN_LEN);
3488 }
3489
3490 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
3491 }
3492
3493 /* in HW restart reuse the index, otherwise request a new one */
3494 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3495 key_offset = key->hw_key_idx;
3496 else
3497 key_offset = STA_KEY_IDX_INVALID;
3498
3499 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3500 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
3501 if (ret) {
3502 IWL_WARN(mvm, "set key failed\n");
3503 key->hw_key_idx = STA_KEY_IDX_INVALID;
3504 /*
3505 * can't add key for RX, but we don't need it
3506 * in the device for TX so still return 0,
3507 * unless we have new TX API where we cannot
3508 * put key material into the TX_CMD
3509 */
3510 if (iwl_mvm_has_new_tx_api(mvm))
3511 ret = -EOPNOTSUPP;
3512 else
3513 ret = 0;
3514 }
3515
3516 break;
3517 case DISABLE_KEY:
3518 ret = -ENOENT;
3519 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) {
3520 if (mvmvif->ap_early_keys[i] == key) {
3521 mvmvif->ap_early_keys[i] = NULL;
3522 ret = 0;
3523 }
3524 }
3525
3526 /* found in pending list - don't do anything else */
3527 if (ret == 0)
3528 break;
3529
3530 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3531 ret = 0;
3532 break;
3533 }
3534
3535 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
3536 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3537 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3538 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3539 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3540 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3541 ptk_pn = rcu_dereference_protected(
3542 mvmsta->ptk_pn[keyidx],
3543 lockdep_is_held(&mvm->mutex));
3544 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3545 if (ptk_pn)
3546 kfree_rcu(ptk_pn, rcu_head);
3547 }
3548
3549 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3550 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3551 break;
3552 default:
3553 ret = -EINVAL;
3554 }
3555
3556 return ret;
3557 }
3558
3559 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
3560 enum set_key_cmd cmd,
3561 struct ieee80211_vif *vif,
3562 struct ieee80211_sta *sta,
3563 struct ieee80211_key_conf *key)
3564 {
3565 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3566 int ret;
3567
3568 mutex_lock(&mvm->mutex);
3569 ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key);
3570 mutex_unlock(&mvm->mutex);
3571
3572 return ret;
3573 }
3574
3575 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3576 struct ieee80211_vif *vif,
3577 struct ieee80211_key_conf *keyconf,
3578 struct ieee80211_sta *sta,
3579 u32 iv32, u16 *phase1key)
3580 {
3581 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3582
3583 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3584 return;
3585
3586 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3587 }
3588
3589
3590 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3591 struct iwl_rx_packet *pkt, void *data)
3592 {
3593 struct iwl_mvm *mvm =
3594 container_of(notif_wait, struct iwl_mvm, notif_wait);
3595 struct iwl_hs20_roc_res *resp;
3596 int resp_len = iwl_rx_packet_payload_len(pkt);
3597 struct iwl_mvm_time_event_data *te_data = data;
3598
3599 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3600 return true;
3601
3602 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3603 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3604 return true;
3605 }
3606
3607 resp = (void *)pkt->data;
3608
3609 IWL_DEBUG_TE(mvm,
3610 "Aux ROC: Received response from ucode: status=%d uid=%d\n",
3611 resp->status, resp->event_unique_id);
3612
3613 te_data->uid = le32_to_cpu(resp->event_unique_id);
3614 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3615 te_data->uid);
3616
3617 spin_lock_bh(&mvm->time_event_lock);
3618 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3619 spin_unlock_bh(&mvm->time_event_lock);
3620
3621 return true;
3622 }
3623
3624 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3625 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3626 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3627 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3628 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3629 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3630 struct ieee80211_channel *channel,
3631 struct ieee80211_vif *vif,
3632 int duration)
3633 {
3634 int res;
3635 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3636 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3637 static const u16 time_event_response[] = { HOT_SPOT_CMD };
3638 struct iwl_notification_wait wait_time_event;
3639 u32 dtim_interval = vif->bss_conf.dtim_period *
3640 vif->bss_conf.beacon_int;
3641 u32 req_dur, delay;
3642 struct iwl_hs20_roc_req aux_roc_req = {
3643 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3644 .id_and_color =
3645 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3646 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3647 };
3648 struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm,
3649 &aux_roc_req.channel_info);
3650 u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm);
3651
3652 /* Set the channel info data */
3653 iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value,
3654 iwl_mvm_phy_band_from_nl80211(channel->band),
3655 PHY_VHT_CHANNEL_MODE20,
3656 0);
3657
3658 /* Set the time and duration */
3659 tail->apply_time = cpu_to_le32(iwl_mvm_get_systime(mvm));
3660
3661 delay = AUX_ROC_MIN_DELAY;
3662 req_dur = MSEC_TO_TU(duration);
3663
3664 /*
3665 * If we are associated we want the delay time to be at least one
3666 * dtim interval so that the FW can wait until after the DTIM and
3667 * then start the time event, this will potentially allow us to
3668 * remain off-channel for the max duration.
3669 * Since we want to use almost a whole dtim interval we would also
3670 * like the delay to be for 2-3 dtim intervals, in case there are
3671 * other time events with higher priority.
3672 */
3673 if (vif->bss_conf.assoc) {
3674 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3675 /* We cannot remain off-channel longer than the DTIM interval */
3676 if (dtim_interval <= req_dur) {
3677 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3678 if (req_dur <= AUX_ROC_MIN_DURATION)
3679 req_dur = dtim_interval -
3680 AUX_ROC_MIN_SAFETY_BUFFER;
3681 }
3682 }
3683
3684 tail->duration = cpu_to_le32(req_dur);
3685 tail->apply_time_max_delay = cpu_to_le32(delay);
3686
3687 IWL_DEBUG_TE(mvm,
3688 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3689 channel->hw_value, req_dur, duration, delay,
3690 dtim_interval);
3691 /* Set the node address */
3692 memcpy(tail->node_addr, vif->addr, ETH_ALEN);
3693
3694 lockdep_assert_held(&mvm->mutex);
3695
3696 spin_lock_bh(&mvm->time_event_lock);
3697
3698 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3699 spin_unlock_bh(&mvm->time_event_lock);
3700 return -EIO;
3701 }
3702
3703 te_data->vif = vif;
3704 te_data->duration = duration;
3705 te_data->id = HOT_SPOT_CMD;
3706
3707 spin_unlock_bh(&mvm->time_event_lock);
3708
3709 /*
3710 * Use a notification wait, which really just processes the
3711 * command response and doesn't wait for anything, in order
3712 * to be able to process the response and get the UID inside
3713 * the RX path. Using CMD_WANT_SKB doesn't work because it
3714 * stores the buffer and then wakes up this thread, by which
3715 * time another notification (that the time event started)
3716 * might already be processed unsuccessfully.
3717 */
3718 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3719 time_event_response,
3720 ARRAY_SIZE(time_event_response),
3721 iwl_mvm_rx_aux_roc, te_data);
3722
3723 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, len,
3724 &aux_roc_req);
3725
3726 if (res) {
3727 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3728 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3729 goto out_clear_te;
3730 }
3731
3732 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3733 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3734 /* should never fail */
3735 WARN_ON_ONCE(res);
3736
3737 if (res) {
3738 out_clear_te:
3739 spin_lock_bh(&mvm->time_event_lock);
3740 iwl_mvm_te_clear_data(mvm, te_data);
3741 spin_unlock_bh(&mvm->time_event_lock);
3742 }
3743
3744 return res;
3745 }
3746
3747 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3748 struct ieee80211_vif *vif,
3749 struct ieee80211_channel *channel,
3750 int duration,
3751 enum ieee80211_roc_type type)
3752 {
3753 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3754 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3755 struct cfg80211_chan_def chandef;
3756 struct iwl_mvm_phy_ctxt *phy_ctxt;
3757 int ret, i;
3758
3759 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3760 duration, type);
3761
3762 /*
3763 * Flush the done work, just in case it's still pending, so that
3764 * the work it does can complete and we can accept new frames.
3765 */
3766 flush_work(&mvm->roc_done_wk);
3767
3768 mutex_lock(&mvm->mutex);
3769
3770 switch (vif->type) {
3771 case NL80211_IFTYPE_STATION:
3772 if (fw_has_capa(&mvm->fw->ucode_capa,
3773 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3774 /* Use aux roc framework (HS20) */
3775 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3776 vif, duration);
3777 goto out_unlock;
3778 }
3779 IWL_ERR(mvm, "hotspot not supported\n");
3780 ret = -EINVAL;
3781 goto out_unlock;
3782 case NL80211_IFTYPE_P2P_DEVICE:
3783 /* handle below */
3784 break;
3785 default:
3786 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3787 ret = -EINVAL;
3788 goto out_unlock;
3789 }
3790
3791 for (i = 0; i < NUM_PHY_CTX; i++) {
3792 phy_ctxt = &mvm->phy_ctxts[i];
3793 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3794 continue;
3795
3796 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3797 /*
3798 * Unbind the P2P_DEVICE from the current PHY context,
3799 * and if the PHY context is not used remove it.
3800 */
3801 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3802 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3803 goto out_unlock;
3804
3805 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3806
3807 /* Bind the P2P_DEVICE to the current PHY Context */
3808 mvmvif->phy_ctxt = phy_ctxt;
3809
3810 ret = iwl_mvm_binding_add_vif(mvm, vif);
3811 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3812 goto out_unlock;
3813
3814 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3815 goto schedule_time_event;
3816 }
3817 }
3818
3819 /* Need to update the PHY context only if the ROC channel changed */
3820 if (channel == mvmvif->phy_ctxt->channel)
3821 goto schedule_time_event;
3822
3823 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3824
3825 /*
3826 * Change the PHY context configuration as it is currently referenced
3827 * only by the P2P Device MAC
3828 */
3829 if (mvmvif->phy_ctxt->ref == 1) {
3830 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3831 &chandef, 1, 1);
3832 if (ret)
3833 goto out_unlock;
3834 } else {
3835 /*
3836 * The PHY context is shared with other MACs. Need to remove the
3837 * P2P Device from the binding, allocate an new PHY context and
3838 * create a new binding
3839 */
3840 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3841 if (!phy_ctxt) {
3842 ret = -ENOSPC;
3843 goto out_unlock;
3844 }
3845
3846 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3847 1, 1);
3848 if (ret) {
3849 IWL_ERR(mvm, "Failed to change PHY context\n");
3850 goto out_unlock;
3851 }
3852
3853 /* Unbind the P2P_DEVICE from the current PHY context */
3854 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3855 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3856 goto out_unlock;
3857
3858 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3859
3860 /* Bind the P2P_DEVICE to the new allocated PHY context */
3861 mvmvif->phy_ctxt = phy_ctxt;
3862
3863 ret = iwl_mvm_binding_add_vif(mvm, vif);
3864 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3865 goto out_unlock;
3866
3867 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3868 }
3869
3870 schedule_time_event:
3871 /* Schedule the time events */
3872 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3873
3874 out_unlock:
3875 mutex_unlock(&mvm->mutex);
3876 IWL_DEBUG_MAC80211(mvm, "leave\n");
3877 return ret;
3878 }
3879
3880 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw,
3881 struct ieee80211_vif *vif)
3882 {
3883 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3884
3885 IWL_DEBUG_MAC80211(mvm, "enter\n");
3886
3887 mutex_lock(&mvm->mutex);
3888 iwl_mvm_stop_roc(mvm, vif);
3889 mutex_unlock(&mvm->mutex);
3890
3891 IWL_DEBUG_MAC80211(mvm, "leave\n");
3892 return 0;
3893 }
3894
3895 struct iwl_mvm_ftm_responder_iter_data {
3896 bool responder;
3897 struct ieee80211_chanctx_conf *ctx;
3898 };
3899
3900 static void iwl_mvm_ftm_responder_chanctx_iter(void *_data, u8 *mac,
3901 struct ieee80211_vif *vif)
3902 {
3903 struct iwl_mvm_ftm_responder_iter_data *data = _data;
3904
3905 if (rcu_access_pointer(vif->chanctx_conf) == data->ctx &&
3906 vif->type == NL80211_IFTYPE_AP && vif->bss_conf.ftmr_params)
3907 data->responder = true;
3908 }
3909
3910 static bool iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm *mvm,
3911 struct ieee80211_chanctx_conf *ctx)
3912 {
3913 struct iwl_mvm_ftm_responder_iter_data data = {
3914 .responder = false,
3915 .ctx = ctx,
3916 };
3917
3918 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
3919 IEEE80211_IFACE_ITER_NORMAL,
3920 iwl_mvm_ftm_responder_chanctx_iter,
3921 &data);
3922 return data.responder;
3923 }
3924
3925 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3926 struct ieee80211_chanctx_conf *ctx)
3927 {
3928 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3929 struct iwl_mvm_phy_ctxt *phy_ctxt;
3930 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx);
3931 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def;
3932 int ret;
3933
3934 lockdep_assert_held(&mvm->mutex);
3935
3936 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3937
3938 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3939 if (!phy_ctxt) {
3940 ret = -ENOSPC;
3941 goto out;
3942 }
3943
3944 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def,
3945 ctx->rx_chains_static,
3946 ctx->rx_chains_dynamic);
3947 if (ret) {
3948 IWL_ERR(mvm, "Failed to add PHY context\n");
3949 goto out;
3950 }
3951
3952 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3953 *phy_ctxt_id = phy_ctxt->id;
3954 out:
3955 return ret;
3956 }
3957
3958 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3959 struct ieee80211_chanctx_conf *ctx)
3960 {
3961 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3962 int ret;
3963
3964 mutex_lock(&mvm->mutex);
3965 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3966 mutex_unlock(&mvm->mutex);
3967
3968 return ret;
3969 }
3970
3971 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3972 struct ieee80211_chanctx_conf *ctx)
3973 {
3974 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3975 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3976
3977 lockdep_assert_held(&mvm->mutex);
3978
3979 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3980 }
3981
3982 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3983 struct ieee80211_chanctx_conf *ctx)
3984 {
3985 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3986
3987 mutex_lock(&mvm->mutex);
3988 __iwl_mvm_remove_chanctx(mvm, ctx);
3989 mutex_unlock(&mvm->mutex);
3990 }
3991
3992 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3993 struct ieee80211_chanctx_conf *ctx,
3994 u32 changed)
3995 {
3996 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3997 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3998 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3999 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx);
4000 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def;
4001
4002 if (WARN_ONCE((phy_ctxt->ref > 1) &&
4003 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
4004 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
4005 IEEE80211_CHANCTX_CHANGE_RADAR |
4006 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
4007 "Cannot change PHY. Ref=%d, changed=0x%X\n",
4008 phy_ctxt->ref, changed))
4009 return;
4010
4011 mutex_lock(&mvm->mutex);
4012
4013 /* we are only changing the min_width, may be a noop */
4014 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) {
4015 if (phy_ctxt->width == def->width)
4016 goto out_unlock;
4017
4018 /* we are just toggling between 20_NOHT and 20 */
4019 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 &&
4020 def->width <= NL80211_CHAN_WIDTH_20)
4021 goto out_unlock;
4022 }
4023
4024 iwl_mvm_bt_coex_vif_change(mvm);
4025 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def,
4026 ctx->rx_chains_static,
4027 ctx->rx_chains_dynamic);
4028
4029 out_unlock:
4030 mutex_unlock(&mvm->mutex);
4031 }
4032
4033 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
4034 struct ieee80211_vif *vif,
4035 struct ieee80211_chanctx_conf *ctx,
4036 bool switching_chanctx)
4037 {
4038 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
4039 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
4040 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4041 int ret;
4042
4043 lockdep_assert_held(&mvm->mutex);
4044
4045 mvmvif->phy_ctxt = phy_ctxt;
4046
4047 switch (vif->type) {
4048 case NL80211_IFTYPE_AP:
4049 /* only needed if we're switching chanctx (i.e. during CSA) */
4050 if (switching_chanctx) {
4051 mvmvif->ap_ibss_active = true;
4052 break;
4053 }
4054 /* fall through */
4055 case NL80211_IFTYPE_ADHOC:
4056 /*
4057 * The AP binding flow is handled as part of the start_ap flow
4058 * (in bss_info_changed), similarly for IBSS.
4059 */
4060 ret = 0;
4061 goto out;
4062 case NL80211_IFTYPE_STATION:
4063 mvmvif->csa_bcn_pending = false;
4064 break;
4065 case NL80211_IFTYPE_MONITOR:
4066 /* always disable PS when a monitor interface is active */
4067 mvmvif->ps_disabled = true;
4068 break;
4069 default:
4070 ret = -EINVAL;
4071 goto out;
4072 }
4073
4074 ret = iwl_mvm_binding_add_vif(mvm, vif);
4075 if (ret)
4076 goto out;
4077
4078 /*
4079 * Power state must be updated before quotas,
4080 * otherwise fw will complain.
4081 */
4082 iwl_mvm_power_update_mac(mvm);
4083
4084 /* Setting the quota at this stage is only required for monitor
4085 * interfaces. For the other types, the bss_info changed flow
4086 * will handle quota settings.
4087 */
4088 if (vif->type == NL80211_IFTYPE_MONITOR) {
4089 mvmvif->monitor_active = true;
4090 ret = iwl_mvm_update_quotas(mvm, false, NULL);
4091 if (ret)
4092 goto out_remove_binding;
4093
4094 ret = iwl_mvm_add_snif_sta(mvm, vif);
4095 if (ret)
4096 goto out_remove_binding;
4097
4098 }
4099
4100 /* Handle binding during CSA */
4101 if (vif->type == NL80211_IFTYPE_AP) {
4102 iwl_mvm_update_quotas(mvm, false, NULL);
4103 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
4104 }
4105
4106 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
4107 mvmvif->csa_bcn_pending = true;
4108
4109 if (!fw_has_capa(&mvm->fw->ucode_capa,
4110 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
4111 u32 duration = 3 * vif->bss_conf.beacon_int;
4112
4113 /* Protect the session to make sure we hear the first
4114 * beacon on the new channel.
4115 */
4116 iwl_mvm_protect_session(mvm, vif, duration, duration,
4117 vif->bss_conf.beacon_int / 2,
4118 true);
4119 }
4120
4121 iwl_mvm_update_quotas(mvm, false, NULL);
4122 }
4123
4124 goto out;
4125
4126 out_remove_binding:
4127 iwl_mvm_binding_remove_vif(mvm, vif);
4128 iwl_mvm_power_update_mac(mvm);
4129 out:
4130 if (ret)
4131 mvmvif->phy_ctxt = NULL;
4132 return ret;
4133 }
4134 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
4135 struct ieee80211_vif *vif,
4136 struct ieee80211_chanctx_conf *ctx)
4137 {
4138 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4139 int ret;
4140
4141 mutex_lock(&mvm->mutex);
4142 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
4143 mutex_unlock(&mvm->mutex);
4144
4145 return ret;
4146 }
4147
4148 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
4149 struct ieee80211_vif *vif,
4150 struct ieee80211_chanctx_conf *ctx,
4151 bool switching_chanctx)
4152 {
4153 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4154 struct ieee80211_vif *disabled_vif = NULL;
4155
4156 lockdep_assert_held(&mvm->mutex);
4157
4158 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
4159
4160 switch (vif->type) {
4161 case NL80211_IFTYPE_ADHOC:
4162 goto out;
4163 case NL80211_IFTYPE_MONITOR:
4164 mvmvif->monitor_active = false;
4165 mvmvif->ps_disabled = false;
4166 iwl_mvm_rm_snif_sta(mvm, vif);
4167 break;
4168 case NL80211_IFTYPE_AP:
4169 /* This part is triggered only during CSA */
4170 if (!switching_chanctx || !mvmvif->ap_ibss_active)
4171 goto out;
4172
4173 mvmvif->csa_countdown = false;
4174
4175 /* Set CS bit on all the stations */
4176 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
4177
4178 /* Save blocked iface, the timeout is set on the next beacon */
4179 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
4180
4181 mvmvif->ap_ibss_active = false;
4182 break;
4183 case NL80211_IFTYPE_STATION:
4184 if (!switching_chanctx)
4185 break;
4186
4187 disabled_vif = vif;
4188
4189 if (!fw_has_capa(&mvm->fw->ucode_capa,
4190 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
4191 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
4192 break;
4193 default:
4194 break;
4195 }
4196
4197 iwl_mvm_update_quotas(mvm, false, disabled_vif);
4198 iwl_mvm_binding_remove_vif(mvm, vif);
4199
4200 out:
4201 mvmvif->phy_ctxt = NULL;
4202 iwl_mvm_power_update_mac(mvm);
4203 }
4204
4205 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
4206 struct ieee80211_vif *vif,
4207 struct ieee80211_chanctx_conf *ctx)
4208 {
4209 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4210
4211 mutex_lock(&mvm->mutex);
4212 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
4213 mutex_unlock(&mvm->mutex);
4214 }
4215
4216 static int
4217 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
4218 struct ieee80211_vif_chanctx_switch *vifs)
4219 {
4220 int ret;
4221
4222 mutex_lock(&mvm->mutex);
4223 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
4224 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
4225
4226 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
4227 if (ret) {
4228 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
4229 goto out_reassign;
4230 }
4231
4232 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
4233 true);
4234 if (ret) {
4235 IWL_ERR(mvm,
4236 "failed to assign new_ctx during channel switch\n");
4237 goto out_remove;
4238 }
4239
4240 /* we don't support TDLS during DCM - can be caused by channel switch */
4241 if (iwl_mvm_phy_ctx_count(mvm) > 1)
4242 iwl_mvm_teardown_tdls_peers(mvm);
4243
4244 goto out;
4245
4246 out_remove:
4247 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
4248
4249 out_reassign:
4250 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
4251 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
4252 goto out_restart;
4253 }
4254
4255 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
4256 true)) {
4257 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
4258 goto out_restart;
4259 }
4260
4261 goto out;
4262
4263 out_restart:
4264 /* things keep failing, better restart the hw */
4265 iwl_mvm_nic_restart(mvm, false);
4266
4267 out:
4268 mutex_unlock(&mvm->mutex);
4269
4270 return ret;
4271 }
4272
4273 static int
4274 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
4275 struct ieee80211_vif_chanctx_switch *vifs)
4276 {
4277 int ret;
4278
4279 mutex_lock(&mvm->mutex);
4280 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
4281
4282 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
4283 true);
4284 if (ret) {
4285 IWL_ERR(mvm,
4286 "failed to assign new_ctx during channel switch\n");
4287 goto out_reassign;
4288 }
4289
4290 goto out;
4291
4292 out_reassign:
4293 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
4294 true)) {
4295 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
4296 goto out_restart;
4297 }
4298
4299 goto out;
4300
4301 out_restart:
4302 /* things keep failing, better restart the hw */
4303 iwl_mvm_nic_restart(mvm, false);
4304
4305 out:
4306 mutex_unlock(&mvm->mutex);
4307
4308 return ret;
4309 }
4310
4311 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
4312 struct ieee80211_vif_chanctx_switch *vifs,
4313 int n_vifs,
4314 enum ieee80211_chanctx_switch_mode mode)
4315 {
4316 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4317 int ret;
4318
4319 /* we only support a single-vif right now */
4320 if (n_vifs > 1)
4321 return -EOPNOTSUPP;
4322
4323 switch (mode) {
4324 case CHANCTX_SWMODE_SWAP_CONTEXTS:
4325 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
4326 break;
4327 case CHANCTX_SWMODE_REASSIGN_VIF:
4328 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
4329 break;
4330 default:
4331 ret = -EOPNOTSUPP;
4332 break;
4333 }
4334
4335 return ret;
4336 }
4337
4338 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
4339 {
4340 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4341
4342 return mvm->ibss_manager;
4343 }
4344
4345 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
4346 struct ieee80211_sta *sta,
4347 bool set)
4348 {
4349 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4350 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4351
4352 if (!mvm_sta || !mvm_sta->vif) {
4353 IWL_ERR(mvm, "Station is not associated to a vif\n");
4354 return -EINVAL;
4355 }
4356
4357 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
4358 }
4359
4360 #ifdef CONFIG_NL80211_TESTMODE
4361 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
4362 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
4363 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
4364 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
4365 };
4366
4367 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
4368 struct ieee80211_vif *vif,
4369 void *data, int len)
4370 {
4371 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
4372 int err;
4373 u32 noa_duration;
4374
4375 err = nla_parse_deprecated(tb, IWL_MVM_TM_ATTR_MAX, data, len,
4376 iwl_mvm_tm_policy, NULL);
4377 if (err)
4378 return err;
4379
4380 if (!tb[IWL_MVM_TM_ATTR_CMD])
4381 return -EINVAL;
4382
4383 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
4384 case IWL_MVM_TM_CMD_SET_NOA:
4385 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
4386 !vif->bss_conf.enable_beacon ||
4387 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
4388 return -EINVAL;
4389
4390 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
4391 if (noa_duration >= vif->bss_conf.beacon_int)
4392 return -EINVAL;
4393
4394 mvm->noa_duration = noa_duration;
4395 mvm->noa_vif = vif;
4396
4397 return iwl_mvm_update_quotas(mvm, true, NULL);
4398 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
4399 /* must be associated client vif - ignore authorized */
4400 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
4401 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
4402 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
4403 return -EINVAL;
4404
4405 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
4406 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
4407 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4408 }
4409
4410 return -EOPNOTSUPP;
4411 }
4412
4413 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
4414 struct ieee80211_vif *vif,
4415 void *data, int len)
4416 {
4417 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4418 int err;
4419
4420 mutex_lock(&mvm->mutex);
4421 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
4422 mutex_unlock(&mvm->mutex);
4423
4424 return err;
4425 }
4426 #endif
4427
4428 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
4429 struct ieee80211_vif *vif,
4430 struct ieee80211_channel_switch *chsw)
4431 {
4432 /* By implementing this operation, we prevent mac80211 from
4433 * starting its own channel switch timer, so that we can call
4434 * ieee80211_chswitch_done() ourselves at the right time
4435 * (which is when the absence time event starts).
4436 */
4437
4438 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
4439 "dummy channel switch op\n");
4440 }
4441
4442 static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm,
4443 struct ieee80211_vif *vif,
4444 struct ieee80211_channel_switch *chsw)
4445 {
4446 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4447 struct iwl_chan_switch_te_cmd cmd = {
4448 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
4449 mvmvif->color)),
4450 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
4451 .tsf = cpu_to_le32(chsw->timestamp),
4452 .cs_count = chsw->count,
4453 .cs_mode = chsw->block_tx,
4454 };
4455
4456 lockdep_assert_held(&mvm->mutex);
4457
4458 if (chsw->delay)
4459 cmd.cs_delayed_bcn_count =
4460 DIV_ROUND_UP(chsw->delay, vif->bss_conf.beacon_int);
4461
4462 return iwl_mvm_send_cmd_pdu(mvm,
4463 WIDE_ID(MAC_CONF_GROUP,
4464 CHANNEL_SWITCH_TIME_EVENT_CMD),
4465 0, sizeof(cmd), &cmd);
4466 }
4467
4468 static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm,
4469 struct ieee80211_vif *vif,
4470 struct ieee80211_channel_switch *chsw)
4471 {
4472 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4473 u32 apply_time;
4474
4475 /* Schedule the time event to a bit before beacon 1,
4476 * to make sure we're in the new channel when the
4477 * GO/AP arrives. In case count <= 1 immediately schedule the
4478 * TE (this might result with some packet loss or connection
4479 * loss).
4480 */
4481 if (chsw->count <= 1)
4482 apply_time = 0;
4483 else
4484 apply_time = chsw->device_timestamp +
4485 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
4486 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
4487
4488 if (chsw->block_tx)
4489 iwl_mvm_csa_client_absent(mvm, vif);
4490
4491 if (mvmvif->bf_data.bf_enabled) {
4492 int ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4493
4494 if (ret)
4495 return ret;
4496 }
4497
4498 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
4499 apply_time);
4500
4501 return 0;
4502 }
4503
4504 #define IWL_MAX_CSA_BLOCK_TX 1500
4505 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
4506 struct ieee80211_vif *vif,
4507 struct ieee80211_channel_switch *chsw)
4508 {
4509 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4510 struct ieee80211_vif *csa_vif;
4511 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4512 int ret;
4513
4514 mutex_lock(&mvm->mutex);
4515
4516 mvmvif->csa_failed = false;
4517
4518 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
4519 chsw->chandef.center_freq1);
4520
4521 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt,
4522 ieee80211_vif_to_wdev(vif),
4523 FW_DBG_TRIGGER_CHANNEL_SWITCH);
4524
4525 switch (vif->type) {
4526 case NL80211_IFTYPE_AP:
4527 csa_vif =
4528 rcu_dereference_protected(mvm->csa_vif,
4529 lockdep_is_held(&mvm->mutex));
4530 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
4531 "Another CSA is already in progress")) {
4532 ret = -EBUSY;
4533 goto out_unlock;
4534 }
4535
4536 /* we still didn't unblock tx. prevent new CS meanwhile */
4537 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
4538 lockdep_is_held(&mvm->mutex))) {
4539 ret = -EBUSY;
4540 goto out_unlock;
4541 }
4542
4543 rcu_assign_pointer(mvm->csa_vif, vif);
4544
4545 if (WARN_ONCE(mvmvif->csa_countdown,
4546 "Previous CSA countdown didn't complete")) {
4547 ret = -EBUSY;
4548 goto out_unlock;
4549 }
4550
4551 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
4552
4553 break;
4554 case NL80211_IFTYPE_STATION:
4555 if (chsw->block_tx) {
4556 /*
4557 * In case of undetermined / long time with immediate
4558 * quiet monitor status to gracefully disconnect
4559 */
4560 if (!chsw->count ||
4561 chsw->count * vif->bss_conf.beacon_int >
4562 IWL_MAX_CSA_BLOCK_TX)
4563 schedule_delayed_work(&mvmvif->csa_work,
4564 msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX));
4565 }
4566
4567 if (!fw_has_capa(&mvm->fw->ucode_capa,
4568 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
4569 ret = iwl_mvm_old_pre_chan_sw_sta(mvm, vif, chsw);
4570 if (ret)
4571 goto out_unlock;
4572 } else {
4573 iwl_mvm_schedule_client_csa(mvm, vif, chsw);
4574 }
4575
4576 mvmvif->csa_count = chsw->count;
4577 mvmvif->csa_misbehave = false;
4578 break;
4579 default:
4580 break;
4581 }
4582
4583 mvmvif->ps_disabled = true;
4584
4585 ret = iwl_mvm_power_update_ps(mvm);
4586 if (ret)
4587 goto out_unlock;
4588
4589 /* we won't be on this channel any longer */
4590 iwl_mvm_teardown_tdls_peers(mvm);
4591
4592 out_unlock:
4593 mutex_unlock(&mvm->mutex);
4594
4595 return ret;
4596 }
4597
4598 static void iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw *hw,
4599 struct ieee80211_vif *vif,
4600 struct ieee80211_channel_switch *chsw)
4601 {
4602 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4603 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4604 struct iwl_chan_switch_te_cmd cmd = {
4605 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
4606 mvmvif->color)),
4607 .action = cpu_to_le32(FW_CTXT_ACTION_MODIFY),
4608 .tsf = cpu_to_le32(chsw->timestamp),
4609 .cs_count = chsw->count,
4610 .cs_mode = chsw->block_tx,
4611 };
4612
4613 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CS_MODIFY))
4614 return;
4615
4616 if (chsw->count >= mvmvif->csa_count && chsw->block_tx) {
4617 if (mvmvif->csa_misbehave) {
4618 /* Second time, give up on this AP*/
4619 iwl_mvm_abort_channel_switch(hw, vif);
4620 ieee80211_chswitch_done(vif, false);
4621 mvmvif->csa_misbehave = false;
4622 return;
4623 }
4624 mvmvif->csa_misbehave = true;
4625 }
4626 mvmvif->csa_count = chsw->count;
4627
4628 IWL_DEBUG_MAC80211(mvm, "Modify CSA on mac %d\n", mvmvif->id);
4629
4630 WARN_ON(iwl_mvm_send_cmd_pdu(mvm,
4631 WIDE_ID(MAC_CONF_GROUP,
4632 CHANNEL_SWITCH_TIME_EVENT_CMD),
4633 CMD_ASYNC, sizeof(cmd), &cmd));
4634 }
4635
4636 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
4637 {
4638 int i;
4639
4640 if (!iwl_mvm_has_new_tx_api(mvm)) {
4641 if (drop) {
4642 mutex_lock(&mvm->mutex);
4643 iwl_mvm_flush_tx_path(mvm,
4644 iwl_mvm_flushable_queues(mvm) & queues, 0);
4645 mutex_unlock(&mvm->mutex);
4646 } else {
4647 iwl_trans_wait_tx_queues_empty(mvm->trans, queues);
4648 }
4649 return;
4650 }
4651
4652 mutex_lock(&mvm->mutex);
4653 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4654 struct ieee80211_sta *sta;
4655
4656 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4657 lockdep_is_held(&mvm->mutex));
4658 if (IS_ERR_OR_NULL(sta))
4659 continue;
4660
4661 if (drop)
4662 iwl_mvm_flush_sta_tids(mvm, i, 0xFFFF, 0);
4663 else
4664 iwl_mvm_wait_sta_queues_empty(mvm,
4665 iwl_mvm_sta_from_mac80211(sta));
4666 }
4667 mutex_unlock(&mvm->mutex);
4668 }
4669
4670 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
4671 struct ieee80211_vif *vif, u32 queues, bool drop)
4672 {
4673 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4674 struct iwl_mvm_vif *mvmvif;
4675 struct iwl_mvm_sta *mvmsta;
4676 struct ieee80211_sta *sta;
4677 int i;
4678 u32 msk = 0;
4679
4680 if (!vif) {
4681 iwl_mvm_flush_no_vif(mvm, queues, drop);
4682 return;
4683 }
4684
4685 if (vif->type != NL80211_IFTYPE_STATION)
4686 return;
4687
4688 /* Make sure we're done with the deferred traffic before flushing */
4689 flush_work(&mvm->add_stream_wk);
4690
4691 mutex_lock(&mvm->mutex);
4692 mvmvif = iwl_mvm_vif_from_mac80211(vif);
4693
4694 /* flush the AP-station and all TDLS peers */
4695 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4696 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4697 lockdep_is_held(&mvm->mutex));
4698 if (IS_ERR_OR_NULL(sta))
4699 continue;
4700
4701 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4702 if (mvmsta->vif != vif)
4703 continue;
4704
4705 /* make sure only TDLS peers or the AP are flushed */
4706 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4707
4708 if (drop) {
4709 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
4710 IWL_ERR(mvm, "flush request fail\n");
4711 } else {
4712 msk |= mvmsta->tfd_queue_msk;
4713 if (iwl_mvm_has_new_tx_api(mvm))
4714 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4715 }
4716 }
4717
4718 mutex_unlock(&mvm->mutex);
4719
4720 /* this can take a while, and we may need/want other operations
4721 * to succeed while doing this, so do it without the mutex held
4722 */
4723 if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4724 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4725 }
4726
4727 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4728 struct survey_info *survey)
4729 {
4730 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4731 int ret;
4732
4733 memset(survey, 0, sizeof(*survey));
4734
4735 /* only support global statistics right now */
4736 if (idx != 0)
4737 return -ENOENT;
4738
4739 if (!fw_has_capa(&mvm->fw->ucode_capa,
4740 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4741 return -ENOENT;
4742
4743 mutex_lock(&mvm->mutex);
4744
4745 if (iwl_mvm_firmware_running(mvm)) {
4746 ret = iwl_mvm_request_statistics(mvm, false);
4747 if (ret)
4748 goto out;
4749 }
4750
4751 survey->filled = SURVEY_INFO_TIME |
4752 SURVEY_INFO_TIME_RX |
4753 SURVEY_INFO_TIME_TX |
4754 SURVEY_INFO_TIME_SCAN;
4755 survey->time = mvm->accu_radio_stats.on_time_rf +
4756 mvm->radio_stats.on_time_rf;
4757 do_div(survey->time, USEC_PER_MSEC);
4758
4759 survey->time_rx = mvm->accu_radio_stats.rx_time +
4760 mvm->radio_stats.rx_time;
4761 do_div(survey->time_rx, USEC_PER_MSEC);
4762
4763 survey->time_tx = mvm->accu_radio_stats.tx_time +
4764 mvm->radio_stats.tx_time;
4765 do_div(survey->time_tx, USEC_PER_MSEC);
4766
4767 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4768 mvm->radio_stats.on_time_scan;
4769 do_div(survey->time_scan, USEC_PER_MSEC);
4770
4771 ret = 0;
4772 out:
4773 mutex_unlock(&mvm->mutex);
4774 return ret;
4775 }
4776
4777 static void iwl_mvm_set_sta_rate(u32 rate_n_flags, struct rate_info *rinfo)
4778 {
4779 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
4780 case RATE_MCS_CHAN_WIDTH_20:
4781 rinfo->bw = RATE_INFO_BW_20;
4782 break;
4783 case RATE_MCS_CHAN_WIDTH_40:
4784 rinfo->bw = RATE_INFO_BW_40;
4785 break;
4786 case RATE_MCS_CHAN_WIDTH_80:
4787 rinfo->bw = RATE_INFO_BW_80;
4788 break;
4789 case RATE_MCS_CHAN_WIDTH_160:
4790 rinfo->bw = RATE_INFO_BW_160;
4791 break;
4792 }
4793
4794 if (rate_n_flags & RATE_MCS_HT_MSK) {
4795 rinfo->flags |= RATE_INFO_FLAGS_MCS;
4796 rinfo->mcs = u32_get_bits(rate_n_flags, RATE_HT_MCS_INDEX_MSK);
4797 rinfo->nss = u32_get_bits(rate_n_flags,
4798 RATE_HT_MCS_NSS_MSK) + 1;
4799 if (rate_n_flags & RATE_MCS_SGI_MSK)
4800 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
4801 } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
4802 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
4803 rinfo->mcs = u32_get_bits(rate_n_flags,
4804 RATE_VHT_MCS_RATE_CODE_MSK);
4805 rinfo->nss = u32_get_bits(rate_n_flags,
4806 RATE_VHT_MCS_NSS_MSK) + 1;
4807 if (rate_n_flags & RATE_MCS_SGI_MSK)
4808 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
4809 } else if (rate_n_flags & RATE_MCS_HE_MSK) {
4810 u32 gi_ltf = u32_get_bits(rate_n_flags,
4811 RATE_MCS_HE_GI_LTF_MSK);
4812
4813 rinfo->flags |= RATE_INFO_FLAGS_HE_MCS;
4814 rinfo->mcs = u32_get_bits(rate_n_flags,
4815 RATE_VHT_MCS_RATE_CODE_MSK);
4816 rinfo->nss = u32_get_bits(rate_n_flags,
4817 RATE_VHT_MCS_NSS_MSK) + 1;
4818
4819 if (rate_n_flags & RATE_MCS_HE_106T_MSK) {
4820 rinfo->bw = RATE_INFO_BW_HE_RU;
4821 rinfo->he_ru_alloc = NL80211_RATE_INFO_HE_RU_ALLOC_106;
4822 }
4823
4824 switch (rate_n_flags & RATE_MCS_HE_TYPE_MSK) {
4825 case RATE_MCS_HE_TYPE_SU:
4826 case RATE_MCS_HE_TYPE_EXT_SU:
4827 if (gi_ltf == 0 || gi_ltf == 1)
4828 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
4829 else if (gi_ltf == 2)
4830 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
4831 else if (rate_n_flags & RATE_MCS_SGI_MSK)
4832 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
4833 else
4834 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
4835 break;
4836 case RATE_MCS_HE_TYPE_MU:
4837 if (gi_ltf == 0 || gi_ltf == 1)
4838 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
4839 else if (gi_ltf == 2)
4840 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
4841 else
4842 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
4843 break;
4844 case RATE_MCS_HE_TYPE_TRIG:
4845 if (gi_ltf == 0 || gi_ltf == 1)
4846 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
4847 else
4848 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
4849 break;
4850 }
4851
4852 if (rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK)
4853 rinfo->he_dcm = 1;
4854 } else {
4855 switch (u32_get_bits(rate_n_flags, RATE_LEGACY_RATE_MSK)) {
4856 case IWL_RATE_1M_PLCP:
4857 rinfo->legacy = 10;
4858 break;
4859 case IWL_RATE_2M_PLCP:
4860 rinfo->legacy = 20;
4861 break;
4862 case IWL_RATE_5M_PLCP:
4863 rinfo->legacy = 55;
4864 break;
4865 case IWL_RATE_11M_PLCP:
4866 rinfo->legacy = 110;
4867 break;
4868 case IWL_RATE_6M_PLCP:
4869 rinfo->legacy = 60;
4870 break;
4871 case IWL_RATE_9M_PLCP:
4872 rinfo->legacy = 90;
4873 break;
4874 case IWL_RATE_12M_PLCP:
4875 rinfo->legacy = 120;
4876 break;
4877 case IWL_RATE_18M_PLCP:
4878 rinfo->legacy = 180;
4879 break;
4880 case IWL_RATE_24M_PLCP:
4881 rinfo->legacy = 240;
4882 break;
4883 case IWL_RATE_36M_PLCP:
4884 rinfo->legacy = 360;
4885 break;
4886 case IWL_RATE_48M_PLCP:
4887 rinfo->legacy = 480;
4888 break;
4889 case IWL_RATE_54M_PLCP:
4890 rinfo->legacy = 540;
4891 break;
4892 }
4893 }
4894 }
4895
4896 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4897 struct ieee80211_vif *vif,
4898 struct ieee80211_sta *sta,
4899 struct station_info *sinfo)
4900 {
4901 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4902 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4903 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4904
4905 if (mvmsta->avg_energy) {
4906 sinfo->signal_avg = mvmsta->avg_energy;
4907 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG);
4908 }
4909
4910 if (iwl_mvm_has_tlc_offload(mvm)) {
4911 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
4912
4913 iwl_mvm_set_sta_rate(lq_sta->last_rate_n_flags, &sinfo->txrate);
4914 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
4915 }
4916
4917 /* if beacon filtering isn't on mac80211 does it anyway */
4918 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4919 return;
4920
4921 if (!vif->bss_conf.assoc)
4922 return;
4923
4924 mutex_lock(&mvm->mutex);
4925
4926 if (mvmvif->ap_sta_id != mvmsta->sta_id)
4927 goto unlock;
4928
4929 if (iwl_mvm_request_statistics(mvm, false))
4930 goto unlock;
4931
4932 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4933 mvmvif->beacon_stats.accu_num_beacons;
4934 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX);
4935 if (mvmvif->beacon_stats.avg_signal) {
4936 /* firmware only reports a value after RXing a few beacons */
4937 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4938 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4939 }
4940 unlock:
4941 mutex_unlock(&mvm->mutex);
4942 }
4943
4944 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4945 struct ieee80211_vif *vif,
4946 const struct ieee80211_event *event)
4947 {
4948 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \
4949 do { \
4950 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \
4951 break; \
4952 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \
4953 } while (0)
4954
4955 struct iwl_fw_dbg_trigger_tlv *trig;
4956 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4957
4958 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
4959 FW_DBG_TRIGGER_MLME);
4960 if (!trig)
4961 return;
4962
4963 trig_mlme = (void *)trig->data;
4964
4965 if (event->u.mlme.data == ASSOC_EVENT) {
4966 if (event->u.mlme.status == MLME_DENIED)
4967 CHECK_MLME_TRIGGER(stop_assoc_denied,
4968 "DENIED ASSOC: reason %d",
4969 event->u.mlme.reason);
4970 else if (event->u.mlme.status == MLME_TIMEOUT)
4971 CHECK_MLME_TRIGGER(stop_assoc_timeout,
4972 "ASSOC TIMEOUT");
4973 } else if (event->u.mlme.data == AUTH_EVENT) {
4974 if (event->u.mlme.status == MLME_DENIED)
4975 CHECK_MLME_TRIGGER(stop_auth_denied,
4976 "DENIED AUTH: reason %d",
4977 event->u.mlme.reason);
4978 else if (event->u.mlme.status == MLME_TIMEOUT)
4979 CHECK_MLME_TRIGGER(stop_auth_timeout,
4980 "AUTH TIMEOUT");
4981 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4982 CHECK_MLME_TRIGGER(stop_rx_deauth,
4983 "DEAUTH RX %d", event->u.mlme.reason);
4984 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4985 CHECK_MLME_TRIGGER(stop_tx_deauth,
4986 "DEAUTH TX %d", event->u.mlme.reason);
4987 }
4988 #undef CHECK_MLME_TRIGGER
4989 }
4990
4991 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4992 struct ieee80211_vif *vif,
4993 const struct ieee80211_event *event)
4994 {
4995 struct iwl_fw_dbg_trigger_tlv *trig;
4996 struct iwl_fw_dbg_trigger_ba *ba_trig;
4997
4998 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
4999 FW_DBG_TRIGGER_BA);
5000 if (!trig)
5001 return;
5002
5003 ba_trig = (void *)trig->data;
5004
5005 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
5006 return;
5007
5008 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
5009 "BAR received from %pM, tid %d, ssn %d",
5010 event->u.ba.sta->addr, event->u.ba.tid,
5011 event->u.ba.ssn);
5012 }
5013
5014 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
5015 struct ieee80211_vif *vif,
5016 const struct ieee80211_event *event)
5017 {
5018 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5019
5020 switch (event->type) {
5021 case MLME_EVENT:
5022 iwl_mvm_event_mlme_callback(mvm, vif, event);
5023 break;
5024 case BAR_RX_EVENT:
5025 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
5026 break;
5027 case BA_FRAME_TIMEOUT:
5028 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta,
5029 event->u.ba.tid);
5030 break;
5031 default:
5032 break;
5033 }
5034 }
5035
5036 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
5037 struct iwl_mvm_internal_rxq_notif *notif,
5038 u32 size)
5039 {
5040 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
5041 int ret;
5042
5043
5044 if (!iwl_mvm_has_new_rx_api(mvm))
5045 return;
5046
5047 if (notif->sync) {
5048 notif->cookie = mvm->queue_sync_cookie;
5049 atomic_set(&mvm->queue_sync_counter,
5050 mvm->trans->num_rx_queues);
5051 }
5052
5053 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif,
5054 size, !notif->sync);
5055 if (ret) {
5056 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
5057 goto out;
5058 }
5059
5060 if (notif->sync) {
5061 lockdep_assert_held(&mvm->mutex);
5062 ret = wait_event_timeout(mvm->rx_sync_waitq,
5063 atomic_read(&mvm->queue_sync_counter) == 0 ||
5064 iwl_mvm_is_radio_killed(mvm),
5065 HZ);
5066 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
5067 }
5068
5069 out:
5070 atomic_set(&mvm->queue_sync_counter, 0);
5071 if (notif->sync)
5072 mvm->queue_sync_cookie++;
5073 }
5074
5075 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
5076 {
5077 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5078 struct iwl_mvm_internal_rxq_notif data = {
5079 .type = IWL_MVM_RXQ_EMPTY,
5080 .sync = 1,
5081 };
5082
5083 mutex_lock(&mvm->mutex);
5084 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
5085 mutex_unlock(&mvm->mutex);
5086 }
5087
5088 static int
5089 iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw *hw,
5090 struct ieee80211_vif *vif,
5091 struct cfg80211_ftm_responder_stats *stats)
5092 {
5093 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5094 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
5095
5096 if (vif->p2p || vif->type != NL80211_IFTYPE_AP ||
5097 !mvmvif->ap_ibss_active || !vif->bss_conf.ftm_responder)
5098 return -EINVAL;
5099
5100 mutex_lock(&mvm->mutex);
5101 *stats = mvm->ftm_resp_stats;
5102 mutex_unlock(&mvm->mutex);
5103
5104 stats->filled = BIT(NL80211_FTM_STATS_SUCCESS_NUM) |
5105 BIT(NL80211_FTM_STATS_PARTIAL_NUM) |
5106 BIT(NL80211_FTM_STATS_FAILED_NUM) |
5107 BIT(NL80211_FTM_STATS_ASAP_NUM) |
5108 BIT(NL80211_FTM_STATS_NON_ASAP_NUM) |
5109 BIT(NL80211_FTM_STATS_TOTAL_DURATION_MSEC) |
5110 BIT(NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM) |
5111 BIT(NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM) |
5112 BIT(NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM);
5113
5114 return 0;
5115 }
5116
5117 static int iwl_mvm_start_pmsr(struct ieee80211_hw *hw,
5118 struct ieee80211_vif *vif,
5119 struct cfg80211_pmsr_request *request)
5120 {
5121 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5122 int ret;
5123
5124 mutex_lock(&mvm->mutex);
5125 ret = iwl_mvm_ftm_start(mvm, vif, request);
5126 mutex_unlock(&mvm->mutex);
5127
5128 return ret;
5129 }
5130
5131 static void iwl_mvm_abort_pmsr(struct ieee80211_hw *hw,
5132 struct ieee80211_vif *vif,
5133 struct cfg80211_pmsr_request *request)
5134 {
5135 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5136
5137 mutex_lock(&mvm->mutex);
5138 iwl_mvm_ftm_abort(mvm, request);
5139 mutex_unlock(&mvm->mutex);
5140 }
5141
5142 static bool iwl_mvm_can_hw_csum(struct sk_buff *skb)
5143 {
5144 u8 protocol = ip_hdr(skb)->protocol;
5145
5146 if (!IS_ENABLED(CONFIG_INET))
5147 return false;
5148
5149 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP;
5150 }
5151
5152 static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw,
5153 struct sk_buff *head,
5154 struct sk_buff *skb)
5155 {
5156 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5157
5158 /* For now don't aggregate IPv6 in AMSDU */
5159 if (skb->protocol != htons(ETH_P_IP))
5160 return false;
5161
5162 if (!iwl_mvm_is_csum_supported(mvm))
5163 return true;
5164
5165 return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head);
5166 }
5167
5168 const struct ieee80211_ops iwl_mvm_hw_ops = {
5169 .tx = iwl_mvm_mac_tx,
5170 .wake_tx_queue = iwl_mvm_mac_wake_tx_queue,
5171 .ampdu_action = iwl_mvm_mac_ampdu_action,
5172 .get_antenna = iwl_mvm_op_get_antenna,
5173 .start = iwl_mvm_mac_start,
5174 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
5175 .stop = iwl_mvm_mac_stop,
5176 .add_interface = iwl_mvm_mac_add_interface,
5177 .remove_interface = iwl_mvm_mac_remove_interface,
5178 .config = iwl_mvm_mac_config,
5179 .prepare_multicast = iwl_mvm_prepare_multicast,
5180 .configure_filter = iwl_mvm_configure_filter,
5181 .config_iface_filter = iwl_mvm_config_iface_filter,
5182 .bss_info_changed = iwl_mvm_bss_info_changed,
5183 .hw_scan = iwl_mvm_mac_hw_scan,
5184 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
5185 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
5186 .sta_state = iwl_mvm_mac_sta_state,
5187 .sta_notify = iwl_mvm_mac_sta_notify,
5188 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
5189 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
5190 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
5191 .sta_rc_update = iwl_mvm_sta_rc_update,
5192 .conf_tx = iwl_mvm_mac_conf_tx,
5193 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
5194 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
5195 .flush = iwl_mvm_mac_flush,
5196 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
5197 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
5198 .set_key = iwl_mvm_mac_set_key,
5199 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
5200 .remain_on_channel = iwl_mvm_roc,
5201 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
5202 .add_chanctx = iwl_mvm_add_chanctx,
5203 .remove_chanctx = iwl_mvm_remove_chanctx,
5204 .change_chanctx = iwl_mvm_change_chanctx,
5205 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
5206 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
5207 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
5208
5209 .start_ap = iwl_mvm_start_ap_ibss,
5210 .stop_ap = iwl_mvm_stop_ap_ibss,
5211 .join_ibss = iwl_mvm_start_ap_ibss,
5212 .leave_ibss = iwl_mvm_stop_ap_ibss,
5213
5214 .tx_last_beacon = iwl_mvm_tx_last_beacon,
5215
5216 .set_tim = iwl_mvm_set_tim,
5217
5218 .channel_switch = iwl_mvm_channel_switch,
5219 .pre_channel_switch = iwl_mvm_pre_channel_switch,
5220 .post_channel_switch = iwl_mvm_post_channel_switch,
5221 .abort_channel_switch = iwl_mvm_abort_channel_switch,
5222 .channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon,
5223
5224 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
5225 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
5226 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
5227
5228 .event_callback = iwl_mvm_mac_event_callback,
5229
5230 .sync_rx_queues = iwl_mvm_sync_rx_queues,
5231
5232 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
5233
5234 #ifdef CONFIG_PM_SLEEP
5235 /* look at d3.c */
5236 .suspend = iwl_mvm_suspend,
5237 .resume = iwl_mvm_resume,
5238 .set_wakeup = iwl_mvm_set_wakeup,
5239 .set_rekey_data = iwl_mvm_set_rekey_data,
5240 #if IS_ENABLED(CONFIG_IPV6)
5241 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
5242 #endif
5243 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
5244 #endif
5245 .get_survey = iwl_mvm_mac_get_survey,
5246 .sta_statistics = iwl_mvm_mac_sta_statistics,
5247 .get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats,
5248 .start_pmsr = iwl_mvm_start_pmsr,
5249 .abort_pmsr = iwl_mvm_abort_pmsr,
5250
5251 .can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate,
5252 #ifdef CONFIG_IWLWIFI_DEBUGFS
5253 .sta_add_debugfs = iwl_mvm_sta_add_debugfs,
5254 #endif
5255 };
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