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 .trigger_based = 1,
197 .non_trigger_based = 1,
198 .max_bursts_exponent = -1, /* all supported */
199 .max_ftms_per_burst = 0, /* no limits */
200 .bandwidths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
201 BIT(NL80211_CHAN_WIDTH_20) |
202 BIT(NL80211_CHAN_WIDTH_40) |
203 BIT(NL80211_CHAN_WIDTH_80),
204 .preambles = BIT(NL80211_PREAMBLE_LEGACY) |
205 BIT(NL80211_PREAMBLE_HT) |
206 BIT(NL80211_PREAMBLE_VHT) |
207 BIT(NL80211_PREAMBLE_HE),
208 },
209 };
210
211 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
212 enum set_key_cmd cmd,
213 struct ieee80211_vif *vif,
214 struct ieee80211_sta *sta,
215 struct ieee80211_key_conf *key);
216
iwl_mvm_reset_phy_ctxts(struct iwl_mvm * mvm)217 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
218 {
219 int i;
220
221 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
222 for (i = 0; i < NUM_PHY_CTX; i++) {
223 mvm->phy_ctxts[i].id = i;
224 mvm->phy_ctxts[i].ref = 0;
225 }
226 }
227
iwl_mvm_get_regdomain(struct wiphy * wiphy,const char * alpha2,enum iwl_mcc_source src_id,bool * changed)228 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
229 const char *alpha2,
230 enum iwl_mcc_source src_id,
231 bool *changed)
232 {
233 struct ieee80211_regdomain *regd = NULL;
234 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
235 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
236 struct iwl_mcc_update_resp *resp;
237 u8 resp_ver;
238
239 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
240
241 lockdep_assert_held(&mvm->mutex);
242
243 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
244 if (IS_ERR_OR_NULL(resp)) {
245 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
246 PTR_ERR_OR_ZERO(resp));
247 goto out;
248 }
249
250 if (changed) {
251 u32 status = le32_to_cpu(resp->status);
252
253 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE ||
254 status == MCC_RESP_ILLEGAL);
255 }
256 resp_ver = iwl_fw_lookup_notif_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
257 MCC_UPDATE_CMD, 0);
258 IWL_DEBUG_LAR(mvm, "MCC update response version: %d\n", resp_ver);
259
260 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
261 __le32_to_cpu(resp->n_channels),
262 resp->channels,
263 __le16_to_cpu(resp->mcc),
264 __le16_to_cpu(resp->geo_info),
265 __le16_to_cpu(resp->cap), resp_ver);
266 /* Store the return source id */
267 src_id = resp->source_id;
268 kfree(resp);
269 if (IS_ERR_OR_NULL(regd)) {
270 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
271 PTR_ERR_OR_ZERO(regd));
272 goto out;
273 }
274
275 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
276 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
277 mvm->lar_regdom_set = true;
278 mvm->mcc_src = src_id;
279
280 out:
281 return regd;
282 }
283
iwl_mvm_update_changed_regdom(struct iwl_mvm * mvm)284 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
285 {
286 bool changed;
287 struct ieee80211_regdomain *regd;
288
289 if (!iwl_mvm_is_lar_supported(mvm))
290 return;
291
292 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
293 if (!IS_ERR_OR_NULL(regd)) {
294 /* only update the regulatory core if changed */
295 if (changed)
296 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
297
298 kfree(regd);
299 }
300 }
301
iwl_mvm_get_current_regdomain(struct iwl_mvm * mvm,bool * changed)302 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
303 bool *changed)
304 {
305 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
306 iwl_mvm_is_wifi_mcc_supported(mvm) ?
307 MCC_SOURCE_GET_CURRENT :
308 MCC_SOURCE_OLD_FW, changed);
309 }
310
iwl_mvm_init_fw_regd(struct iwl_mvm * mvm)311 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
312 {
313 enum iwl_mcc_source used_src;
314 struct ieee80211_regdomain *regd;
315 int ret;
316 bool changed;
317 const struct ieee80211_regdomain *r =
318 rtnl_dereference(mvm->hw->wiphy->regd);
319
320 if (!r)
321 return -ENOENT;
322
323 /* save the last source in case we overwrite it below */
324 used_src = mvm->mcc_src;
325 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
326 /* Notify the firmware we support wifi location updates */
327 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
328 if (!IS_ERR_OR_NULL(regd))
329 kfree(regd);
330 }
331
332 /* Now set our last stored MCC and source */
333 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
334 &changed);
335 if (IS_ERR_OR_NULL(regd))
336 return -EIO;
337
338 /* update cfg80211 if the regdomain was changed */
339 if (changed)
340 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
341 else
342 ret = 0;
343
344 kfree(regd);
345 return ret;
346 }
347
348 static const u8 he_if_types_ext_capa_sta[] = {
349 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING,
350 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT,
351 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF,
352 [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT,
353 };
354
355 static const struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = {
356 {
357 .iftype = NL80211_IFTYPE_STATION,
358 .extended_capabilities = he_if_types_ext_capa_sta,
359 .extended_capabilities_mask = he_if_types_ext_capa_sta,
360 .extended_capabilities_len = sizeof(he_if_types_ext_capa_sta),
361 },
362 };
363
364 static int
iwl_mvm_op_get_antenna(struct ieee80211_hw * hw,u32 * tx_ant,u32 * rx_ant)365 iwl_mvm_op_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
366 {
367 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
368 *tx_ant = iwl_mvm_get_valid_tx_ant(mvm);
369 *rx_ant = iwl_mvm_get_valid_rx_ant(mvm);
370 return 0;
371 }
372
iwl_mvm_mac_setup_register(struct iwl_mvm * mvm)373 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
374 {
375 struct ieee80211_hw *hw = mvm->hw;
376 int num_mac, ret, i;
377 static const u32 mvm_ciphers[] = {
378 WLAN_CIPHER_SUITE_WEP40,
379 WLAN_CIPHER_SUITE_WEP104,
380 WLAN_CIPHER_SUITE_TKIP,
381 WLAN_CIPHER_SUITE_CCMP,
382 };
383 #ifdef CONFIG_PM_SLEEP
384 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
385 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
386 #endif
387
388 /* Tell mac80211 our characteristics */
389 ieee80211_hw_set(hw, SIGNAL_DBM);
390 ieee80211_hw_set(hw, SPECTRUM_MGMT);
391 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
392 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
393 ieee80211_hw_set(hw, SUPPORTS_PS);
394 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
395 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
396 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
397 ieee80211_hw_set(hw, CONNECTION_MONITOR);
398 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
399 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
400 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
401 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
402 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
403 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP);
404 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
405 ieee80211_hw_set(hw, BUFF_MMPDU_TXQ);
406 ieee80211_hw_set(hw, STA_MMPDU_TXQ);
407 /*
408 * On older devices, enabling TX A-MSDU occasionally leads to
409 * something getting messed up, the command read from the FIFO
410 * gets out of sync and isn't a TX command, so that we have an
411 * assert EDC.
412 *
413 * It's not clear where the bug is, but since we didn't used to
414 * support A-MSDU until moving the mac80211 iTXQs, just leave it
415 * for older devices. We also don't see this issue on any newer
416 * devices.
417 */
418 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000)
419 ieee80211_hw_set(hw, TX_AMSDU);
420 ieee80211_hw_set(hw, TX_FRAG_LIST);
421
422 if (iwl_mvm_has_tlc_offload(mvm)) {
423 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
424 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
425 }
426
427 if (iwl_mvm_has_new_rx_api(mvm))
428 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
429
430 if (fw_has_capa(&mvm->fw->ucode_capa,
431 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) {
432 ieee80211_hw_set(hw, AP_LINK_PS);
433 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) {
434 /*
435 * we absolutely need this for the new TX API since that comes
436 * with many more queues than the current code can deal with
437 * for station powersave
438 */
439 return -EINVAL;
440 }
441
442 if (mvm->trans->num_rx_queues > 1)
443 ieee80211_hw_set(hw, USES_RSS);
444
445 if (mvm->trans->max_skb_frags)
446 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
447
448 hw->queues = IEEE80211_MAX_QUEUES;
449 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
450 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
451 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
452 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
453 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
454
455 hw->radiotap_timestamp.units_pos =
456 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
457 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
458 /* this is the case for CCK frames, it's better (only 8) for OFDM */
459 hw->radiotap_timestamp.accuracy = 22;
460
461 if (!iwl_mvm_has_tlc_offload(mvm))
462 hw->rate_control_algorithm = RS_NAME;
463
464 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
465 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
466 hw->max_tx_fragments = mvm->trans->max_skb_frags;
467
468 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
469 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
470 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
471 hw->wiphy->cipher_suites = mvm->ciphers;
472
473 if (iwl_mvm_has_new_rx_api(mvm)) {
474 mvm->ciphers[hw->wiphy->n_cipher_suites] =
475 WLAN_CIPHER_SUITE_GCMP;
476 hw->wiphy->n_cipher_suites++;
477 mvm->ciphers[hw->wiphy->n_cipher_suites] =
478 WLAN_CIPHER_SUITE_GCMP_256;
479 hw->wiphy->n_cipher_suites++;
480 }
481
482 if (iwlwifi_mod_params.swcrypto)
483 IWL_ERR(mvm,
484 "iwlmvm doesn't allow to disable HW crypto, check swcrypto module parameter\n");
485 if (!iwlwifi_mod_params.bt_coex_active)
486 IWL_ERR(mvm,
487 "iwlmvm doesn't allow to disable BT Coex, check bt_coex_active module parameter\n");
488
489 ieee80211_hw_set(hw, MFP_CAPABLE);
490 mvm->ciphers[hw->wiphy->n_cipher_suites] = WLAN_CIPHER_SUITE_AES_CMAC;
491 hw->wiphy->n_cipher_suites++;
492 if (iwl_mvm_has_new_rx_api(mvm)) {
493 mvm->ciphers[hw->wiphy->n_cipher_suites] =
494 WLAN_CIPHER_SUITE_BIP_GMAC_128;
495 hw->wiphy->n_cipher_suites++;
496 mvm->ciphers[hw->wiphy->n_cipher_suites] =
497 WLAN_CIPHER_SUITE_BIP_GMAC_256;
498 hw->wiphy->n_cipher_suites++;
499 }
500
501 /* currently FW API supports only one optional cipher scheme */
502 if (mvm->fw->cs[0].cipher) {
503 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
504 struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
505
506 mvm->hw->n_cipher_schemes = 1;
507
508 cs->cipher = le32_to_cpu(fwcs->cipher);
509 cs->iftype = BIT(NL80211_IFTYPE_STATION);
510 cs->hdr_len = fwcs->hdr_len;
511 cs->pn_len = fwcs->pn_len;
512 cs->pn_off = fwcs->pn_off;
513 cs->key_idx_off = fwcs->key_idx_off;
514 cs->key_idx_mask = fwcs->key_idx_mask;
515 cs->key_idx_shift = fwcs->key_idx_shift;
516 cs->mic_len = fwcs->mic_len;
517
518 mvm->hw->cipher_schemes = mvm->cs;
519 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
520 hw->wiphy->n_cipher_suites++;
521 }
522
523 if (fw_has_capa(&mvm->fw->ucode_capa,
524 IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) {
525 wiphy_ext_feature_set(hw->wiphy,
526 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER);
527 hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa;
528 }
529
530 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
531 hw->wiphy->features |=
532 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
533 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
534 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
535
536 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
537 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
538 hw->chanctx_data_size = sizeof(u16);
539 hw->txq_data_size = sizeof(struct iwl_mvm_txq);
540
541 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
542 BIT(NL80211_IFTYPE_P2P_CLIENT) |
543 BIT(NL80211_IFTYPE_AP) |
544 BIT(NL80211_IFTYPE_P2P_GO) |
545 BIT(NL80211_IFTYPE_P2P_DEVICE) |
546 BIT(NL80211_IFTYPE_ADHOC);
547
548 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
549 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
550
551 /* The new Tx API does not allow to pass the key or keyid of a MPDU to
552 * the hw, preventing us to control which key(id) to use per MPDU.
553 * Till that's fixed we can't use Extended Key ID for the newer cards.
554 */
555 if (!iwl_mvm_has_new_tx_api(mvm))
556 wiphy_ext_feature_set(hw->wiphy,
557 NL80211_EXT_FEATURE_EXT_KEY_ID);
558 hw->wiphy->features |= NL80211_FEATURE_HT_IBSS;
559
560 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
561 if (iwl_mvm_is_lar_supported(mvm))
562 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
563 else
564 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
565 REGULATORY_DISABLE_BEACON_HINTS;
566
567 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
568 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
569
570 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
571 hw->wiphy->n_iface_combinations =
572 ARRAY_SIZE(iwl_mvm_iface_combinations);
573
574 hw->wiphy->max_remain_on_channel_duration = 10000;
575 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
576
577 /* Extract MAC address */
578 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
579 hw->wiphy->addresses = mvm->addresses;
580 hw->wiphy->n_addresses = 1;
581
582 /* Extract additional MAC addresses if available */
583 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
584 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
585
586 for (i = 1; i < num_mac; i++) {
587 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
588 ETH_ALEN);
589 mvm->addresses[i].addr[5]++;
590 hw->wiphy->n_addresses++;
591 }
592
593 iwl_mvm_reset_phy_ctxts(mvm);
594
595 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
596
597 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
598
599 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
600 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
601 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
602
603 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
604 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
605 else
606 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
607
608 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
609 hw->wiphy->bands[NL80211_BAND_2GHZ] =
610 &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
611 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
612 hw->wiphy->bands[NL80211_BAND_5GHZ] =
613 &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
614
615 if (fw_has_capa(&mvm->fw->ucode_capa,
616 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
617 fw_has_api(&mvm->fw->ucode_capa,
618 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
619 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
620 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
621 }
622
623 hw->wiphy->hw_version = mvm->trans->hw_id;
624
625 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
626 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
627 else
628 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
629
630 hw->wiphy->max_sched_scan_reqs = 1;
631 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
632 hw->wiphy->max_match_sets = iwl_umac_scan_get_max_profiles(mvm->fw);
633 /* we create the 802.11 header and zero length SSID IE. */
634 hw->wiphy->max_sched_scan_ie_len =
635 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
636 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
637 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
638
639 /*
640 * the firmware uses u8 for num of iterations, but 0xff is saved for
641 * infinite loop, so the maximum number of iterations is actually 254.
642 */
643 hw->wiphy->max_sched_scan_plan_iterations = 254;
644
645 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
646 NL80211_FEATURE_LOW_PRIORITY_SCAN |
647 NL80211_FEATURE_P2P_GO_OPPPS |
648 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
649 NL80211_FEATURE_DYNAMIC_SMPS |
650 NL80211_FEATURE_STATIC_SMPS |
651 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
652
653 if (fw_has_capa(&mvm->fw->ucode_capa,
654 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
655 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
656 if (fw_has_capa(&mvm->fw->ucode_capa,
657 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
658 hw->wiphy->features |= NL80211_FEATURE_QUIET;
659
660 if (fw_has_capa(&mvm->fw->ucode_capa,
661 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
662 hw->wiphy->features |=
663 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
664
665 if (fw_has_capa(&mvm->fw->ucode_capa,
666 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
667 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
668
669 if (iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
670 WOWLAN_KEK_KCK_MATERIAL,
671 IWL_FW_CMD_VER_UNKNOWN) == 3)
672 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK;
673
674 if (fw_has_api(&mvm->fw->ucode_capa,
675 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
676 wiphy_ext_feature_set(hw->wiphy,
677 NL80211_EXT_FEATURE_SCAN_START_TIME);
678 wiphy_ext_feature_set(hw->wiphy,
679 NL80211_EXT_FEATURE_BSS_PARENT_TSF);
680 }
681
682 if (iwl_mvm_is_oce_supported(mvm)) {
683 wiphy_ext_feature_set(hw->wiphy,
684 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP);
685 wiphy_ext_feature_set(hw->wiphy,
686 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME);
687 wiphy_ext_feature_set(hw->wiphy,
688 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION);
689 wiphy_ext_feature_set(hw->wiphy,
690 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE);
691 }
692
693 if (mvm->nvm_data->sku_cap_11ax_enable &&
694 !iwlwifi_mod_params.disable_11ax) {
695 hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa;
696 hw->wiphy->num_iftype_ext_capab =
697 ARRAY_SIZE(he_iftypes_ext_capa);
698
699 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
700 ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID);
701 }
702
703 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
704
705 #ifdef CONFIG_PM_SLEEP
706 if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) &&
707 mvm->trans->ops->d3_suspend &&
708 mvm->trans->ops->d3_resume &&
709 device_can_wakeup(mvm->trans->dev)) {
710 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
711 WIPHY_WOWLAN_DISCONNECT |
712 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
713 WIPHY_WOWLAN_RFKILL_RELEASE |
714 WIPHY_WOWLAN_NET_DETECT;
715 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
716 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
717 WIPHY_WOWLAN_4WAY_HANDSHAKE;
718
719 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
720 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
721 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
722 mvm->wowlan.max_nd_match_sets =
723 iwl_umac_scan_get_max_profiles(mvm->fw);
724 hw->wiphy->wowlan = &mvm->wowlan;
725 }
726 #endif
727
728 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
729 /* assign default bcast filtering configuration */
730 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
731 #endif
732
733 ret = iwl_mvm_leds_init(mvm);
734 if (ret)
735 return ret;
736
737 if (fw_has_capa(&mvm->fw->ucode_capa,
738 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
739 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
740 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
741 ieee80211_hw_set(hw, TDLS_WIDER_BW);
742 }
743
744 if (fw_has_capa(&mvm->fw->ucode_capa,
745 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
746 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
747 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
748 }
749
750 hw->netdev_features |= mvm->cfg->features;
751 if (!iwl_mvm_is_csum_supported(mvm)) {
752 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
753 NETIF_F_RXCSUM);
754 /* We may support SW TX CSUM */
755 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
756 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
757 }
758
759 if (mvm->cfg->vht_mu_mimo_supported)
760 wiphy_ext_feature_set(hw->wiphy,
761 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
762
763 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_PROTECTED_TWT))
764 wiphy_ext_feature_set(hw->wiphy,
765 NL80211_EXT_FEATURE_PROTECTED_TWT);
766
767 hw->wiphy->available_antennas_tx = iwl_mvm_get_valid_tx_ant(mvm);
768 hw->wiphy->available_antennas_rx = iwl_mvm_get_valid_rx_ant(mvm);
769
770 ret = ieee80211_register_hw(mvm->hw);
771 if (ret) {
772 iwl_mvm_leds_exit(mvm);
773 }
774
775 return ret;
776 }
777
iwl_mvm_tx_skb(struct iwl_mvm * mvm,struct sk_buff * skb,struct ieee80211_sta * sta)778 static void iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
779 struct ieee80211_sta *sta)
780 {
781 if (likely(sta)) {
782 if (likely(iwl_mvm_tx_skb_sta(mvm, skb, sta) == 0))
783 return;
784 } else {
785 if (likely(iwl_mvm_tx_skb_non_sta(mvm, skb) == 0))
786 return;
787 }
788
789 ieee80211_free_txskb(mvm->hw, skb);
790 }
791
iwl_mvm_mac_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)792 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
793 struct ieee80211_tx_control *control,
794 struct sk_buff *skb)
795 {
796 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
797 struct ieee80211_sta *sta = control->sta;
798 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
799 struct ieee80211_hdr *hdr = (void *)skb->data;
800 bool offchannel = IEEE80211_SKB_CB(skb)->flags &
801 IEEE80211_TX_CTL_TX_OFFCHAN;
802
803 if (iwl_mvm_is_radio_killed(mvm)) {
804 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
805 goto drop;
806 }
807
808 if (offchannel &&
809 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
810 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
811 goto drop;
812
813 /* treat non-bufferable MMPDUs on AP interfaces as broadcast */
814 if ((info->control.vif->type == NL80211_IFTYPE_AP ||
815 info->control.vif->type == NL80211_IFTYPE_ADHOC) &&
816 ieee80211_is_mgmt(hdr->frame_control) &&
817 !ieee80211_is_bufferable_mmpdu(hdr->frame_control))
818 sta = NULL;
819
820 /* If there is no sta, and it's not offchannel - send through AP */
821 if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION &&
822 !offchannel) {
823 struct iwl_mvm_vif *mvmvif =
824 iwl_mvm_vif_from_mac80211(info->control.vif);
825 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id);
826
827 if (ap_sta_id < mvm->fw->ucode_capa.num_stations) {
828 /* mac80211 holds rcu read lock */
829 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]);
830 if (IS_ERR_OR_NULL(sta))
831 goto drop;
832 }
833 }
834
835 iwl_mvm_tx_skb(mvm, skb, sta);
836 return;
837 drop:
838 ieee80211_free_txskb(hw, skb);
839 }
840
iwl_mvm_mac_itxq_xmit(struct ieee80211_hw * hw,struct ieee80211_txq * txq)841 void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq)
842 {
843 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
844 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
845 struct sk_buff *skb = NULL;
846
847 /*
848 * No need for threads to be pending here, they can leave the first
849 * taker all the work.
850 *
851 * mvmtxq->tx_request logic:
852 *
853 * If 0, no one is currently TXing, set to 1 to indicate current thread
854 * will now start TX and other threads should quit.
855 *
856 * If 1, another thread is currently TXing, set to 2 to indicate to
857 * that thread that there was another request. Since that request may
858 * have raced with the check whether the queue is empty, the TXing
859 * thread should check the queue's status one more time before leaving.
860 * This check is done in order to not leave any TX hanging in the queue
861 * until the next TX invocation (which may not even happen).
862 *
863 * If 2, another thread is currently TXing, and it will already double
864 * check the queue, so do nothing.
865 */
866 if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2))
867 return;
868
869 rcu_read_lock();
870 do {
871 while (likely(!mvmtxq->stopped &&
872 (mvm->trans->system_pm_mode ==
873 IWL_PLAT_PM_MODE_DISABLED))) {
874 skb = ieee80211_tx_dequeue(hw, txq);
875
876 if (!skb) {
877 if (txq->sta)
878 IWL_DEBUG_TX(mvm,
879 "TXQ of sta %pM tid %d is now empty\n",
880 txq->sta->addr,
881 txq->tid);
882 break;
883 }
884
885 iwl_mvm_tx_skb(mvm, skb, txq->sta);
886 }
887 } while (atomic_dec_return(&mvmtxq->tx_request));
888 rcu_read_unlock();
889 }
890
iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw * hw,struct ieee80211_txq * txq)891 static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw,
892 struct ieee80211_txq *txq)
893 {
894 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
895 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
896
897 /*
898 * Please note that racing is handled very carefully here:
899 * mvmtxq->txq_id is updated during allocation, and mvmtxq->list is
900 * deleted afterwards.
901 * This means that if:
902 * mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list):
903 * queue is allocated and we can TX.
904 * mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list):
905 * a race, should defer the frame.
906 * mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list):
907 * need to allocate the queue and defer the frame.
908 * mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list):
909 * queue is already scheduled for allocation, no need to allocate,
910 * should defer the frame.
911 */
912
913 /* If the queue is allocated TX and return. */
914 if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) {
915 /*
916 * Check that list is empty to avoid a race where txq_id is
917 * already updated, but the queue allocation work wasn't
918 * finished
919 */
920 if (unlikely(txq->sta && !list_empty(&mvmtxq->list)))
921 return;
922
923 iwl_mvm_mac_itxq_xmit(hw, txq);
924 return;
925 }
926
927 /* The list is being deleted only after the queue is fully allocated. */
928 if (!list_empty(&mvmtxq->list))
929 return;
930
931 list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs);
932 schedule_work(&mvm->add_stream_wk);
933 }
934
935 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
936 do { \
937 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
938 break; \
939 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \
940 } while (0)
941
942 static void
iwl_mvm_ampdu_check_trigger(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u16 tid,u16 rx_ba_ssn,enum ieee80211_ampdu_mlme_action action)943 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
944 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
945 enum ieee80211_ampdu_mlme_action action)
946 {
947 struct iwl_fw_dbg_trigger_tlv *trig;
948 struct iwl_fw_dbg_trigger_ba *ba_trig;
949
950 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
951 FW_DBG_TRIGGER_BA);
952 if (!trig)
953 return;
954
955 ba_trig = (void *)trig->data;
956
957 switch (action) {
958 case IEEE80211_AMPDU_TX_OPERATIONAL: {
959 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
960 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
961
962 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
963 "TX AGG START: MAC %pM tid %d ssn %d\n",
964 sta->addr, tid, tid_data->ssn);
965 break;
966 }
967 case IEEE80211_AMPDU_TX_STOP_CONT:
968 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
969 "TX AGG STOP: MAC %pM tid %d\n",
970 sta->addr, tid);
971 break;
972 case IEEE80211_AMPDU_RX_START:
973 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
974 "RX AGG START: MAC %pM tid %d ssn %d\n",
975 sta->addr, tid, rx_ba_ssn);
976 break;
977 case IEEE80211_AMPDU_RX_STOP:
978 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
979 "RX AGG STOP: MAC %pM tid %d\n",
980 sta->addr, tid);
981 break;
982 default:
983 break;
984 }
985 }
986
iwl_mvm_mac_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)987 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
988 struct ieee80211_vif *vif,
989 struct ieee80211_ampdu_params *params)
990 {
991 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
992 int ret;
993 struct ieee80211_sta *sta = params->sta;
994 enum ieee80211_ampdu_mlme_action action = params->action;
995 u16 tid = params->tid;
996 u16 *ssn = ¶ms->ssn;
997 u16 buf_size = params->buf_size;
998 bool amsdu = params->amsdu;
999 u16 timeout = params->timeout;
1000
1001 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
1002 sta->addr, tid, action);
1003
1004 if (!(mvm->nvm_data->sku_cap_11n_enable))
1005 return -EACCES;
1006
1007 mutex_lock(&mvm->mutex);
1008
1009 switch (action) {
1010 case IEEE80211_AMPDU_RX_START:
1011 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id ==
1012 iwl_mvm_sta_from_mac80211(sta)->sta_id) {
1013 struct iwl_mvm_vif *mvmvif;
1014 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id;
1015 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid];
1016
1017 mdata->opened_rx_ba_sessions = true;
1018 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1019 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk);
1020 }
1021 if (!iwl_enable_rx_ampdu()) {
1022 ret = -EINVAL;
1023 break;
1024 }
1025 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
1026 timeout);
1027 break;
1028 case IEEE80211_AMPDU_RX_STOP:
1029 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
1030 timeout);
1031 break;
1032 case IEEE80211_AMPDU_TX_START:
1033 if (!iwl_enable_tx_ampdu()) {
1034 ret = -EINVAL;
1035 break;
1036 }
1037 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
1038 break;
1039 case IEEE80211_AMPDU_TX_STOP_CONT:
1040 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
1041 break;
1042 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1043 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1044 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
1045 break;
1046 case IEEE80211_AMPDU_TX_OPERATIONAL:
1047 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
1048 buf_size, amsdu);
1049 break;
1050 default:
1051 WARN_ON_ONCE(1);
1052 ret = -EINVAL;
1053 break;
1054 }
1055
1056 if (!ret) {
1057 u16 rx_ba_ssn = 0;
1058
1059 if (action == IEEE80211_AMPDU_RX_START)
1060 rx_ba_ssn = *ssn;
1061
1062 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
1063 rx_ba_ssn, action);
1064 }
1065 mutex_unlock(&mvm->mutex);
1066
1067 return ret;
1068 }
1069
iwl_mvm_cleanup_iterator(void * data,u8 * mac,struct ieee80211_vif * vif)1070 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1071 struct ieee80211_vif *vif)
1072 {
1073 struct iwl_mvm *mvm = data;
1074 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1075
1076 mvmvif->uploaded = false;
1077 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1078
1079 spin_lock_bh(&mvm->time_event_lock);
1080 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1081 spin_unlock_bh(&mvm->time_event_lock);
1082
1083 mvmvif->phy_ctxt = NULL;
1084 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1085 memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data));
1086 }
1087
iwl_mvm_restart_cleanup(struct iwl_mvm * mvm)1088 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1089 {
1090 iwl_mvm_stop_device(mvm);
1091
1092 mvm->cur_aid = 0;
1093
1094 mvm->scan_status = 0;
1095 mvm->ps_disabled = false;
1096 mvm->rfkill_safe_init_done = false;
1097
1098 /* just in case one was running */
1099 iwl_mvm_cleanup_roc_te(mvm);
1100 ieee80211_remain_on_channel_expired(mvm->hw);
1101
1102 iwl_mvm_ftm_restart(mvm);
1103
1104 /*
1105 * cleanup all interfaces, even inactive ones, as some might have
1106 * gone down during the HW restart
1107 */
1108 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1109
1110 mvm->p2p_device_vif = NULL;
1111
1112 iwl_mvm_reset_phy_ctxts(mvm);
1113 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1114 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1115 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1116
1117 ieee80211_wake_queues(mvm->hw);
1118
1119 mvm->vif_count = 0;
1120 mvm->rx_ba_sessions = 0;
1121 mvm->fwrt.dump.conf = FW_DBG_INVALID;
1122 mvm->monitor_on = false;
1123
1124 /* keep statistics ticking */
1125 iwl_mvm_accu_radio_stats(mvm);
1126 }
1127
__iwl_mvm_mac_start(struct iwl_mvm * mvm)1128 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1129 {
1130 int ret;
1131
1132 lockdep_assert_held(&mvm->mutex);
1133
1134 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
1135 /*
1136 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
1137 * so later code will - from now on - see that we're doing it.
1138 */
1139 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1140 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1141 /* Clean up some internal and mac80211 state on restart */
1142 iwl_mvm_restart_cleanup(mvm);
1143 }
1144 ret = iwl_mvm_up(mvm);
1145
1146 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT,
1147 NULL);
1148 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC,
1149 NULL);
1150
1151 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1152 /* Something went wrong - we need to finish some cleanup
1153 * that normally iwl_mvm_mac_restart_complete() below
1154 * would do.
1155 */
1156 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1157 }
1158
1159 return ret;
1160 }
1161
iwl_mvm_mac_start(struct ieee80211_hw * hw)1162 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1163 {
1164 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1165 int ret;
1166
1167 mutex_lock(&mvm->mutex);
1168 ret = __iwl_mvm_mac_start(mvm);
1169 mutex_unlock(&mvm->mutex);
1170
1171 return ret;
1172 }
1173
iwl_mvm_restart_complete(struct iwl_mvm * mvm)1174 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1175 {
1176 int ret;
1177
1178 mutex_lock(&mvm->mutex);
1179
1180 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1181
1182 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1183 if (ret)
1184 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1185 ret);
1186
1187 iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY);
1188
1189 /*
1190 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1191 * of packets the FW sent out, so we must reconnect.
1192 */
1193 iwl_mvm_teardown_tdls_peers(mvm);
1194
1195 mutex_unlock(&mvm->mutex);
1196 }
1197
1198 static void
iwl_mvm_mac_reconfig_complete(struct ieee80211_hw * hw,enum ieee80211_reconfig_type reconfig_type)1199 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1200 enum ieee80211_reconfig_type reconfig_type)
1201 {
1202 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1203
1204 switch (reconfig_type) {
1205 case IEEE80211_RECONFIG_TYPE_RESTART:
1206 iwl_mvm_restart_complete(mvm);
1207 break;
1208 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1209 break;
1210 }
1211 }
1212
__iwl_mvm_mac_stop(struct iwl_mvm * mvm)1213 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1214 {
1215 lockdep_assert_held(&mvm->mutex);
1216
1217 iwl_mvm_ftm_initiator_smooth_stop(mvm);
1218
1219 /* firmware counters are obviously reset now, but we shouldn't
1220 * partially track so also clear the fw_reset_accu counters.
1221 */
1222 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1223
1224 /* async_handlers_wk is now blocked */
1225
1226 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, ADD_STA, 0) < 12)
1227 iwl_mvm_rm_aux_sta(mvm);
1228
1229 iwl_mvm_stop_device(mvm);
1230
1231 iwl_mvm_async_handlers_purge(mvm);
1232 /* async_handlers_list is empty and will stay empty: HW is stopped */
1233
1234 /*
1235 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the
1236 * hw (as restart_complete() won't be called in this case) and mac80211
1237 * won't execute the restart.
1238 * But make sure to cleanup interfaces that have gone down before/during
1239 * HW restart was requested.
1240 */
1241 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
1242 test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
1243 &mvm->status))
1244 ieee80211_iterate_interfaces(mvm->hw, 0,
1245 iwl_mvm_cleanup_iterator, mvm);
1246
1247 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1248 * make sure there's nothing left there and warn if any is found.
1249 */
1250 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1251 int i;
1252
1253 for (i = 0; i < mvm->max_scans; i++) {
1254 if (WARN_ONCE(mvm->scan_uid_status[i],
1255 "UMAC scan UID %d status was not cleaned\n",
1256 i))
1257 mvm->scan_uid_status[i] = 0;
1258 }
1259 }
1260 }
1261
iwl_mvm_mac_stop(struct ieee80211_hw * hw)1262 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1263 {
1264 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1265
1266 flush_work(&mvm->async_handlers_wk);
1267 flush_work(&mvm->add_stream_wk);
1268
1269 /*
1270 * Lock and clear the firmware running bit here already, so that
1271 * new commands coming in elsewhere, e.g. from debugfs, will not
1272 * be able to proceed. This is important here because one of those
1273 * debugfs files causes the firmware dump to be triggered, and if we
1274 * don't stop debugfs accesses before canceling that it could be
1275 * retriggered after we flush it but before we've cleared the bit.
1276 */
1277 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1278
1279 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1280 cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1281
1282 /*
1283 * The work item could be running or queued if the
1284 * ROC time event stops just as we get here.
1285 */
1286 flush_work(&mvm->roc_done_wk);
1287
1288 mutex_lock(&mvm->mutex);
1289 __iwl_mvm_mac_stop(mvm);
1290 mutex_unlock(&mvm->mutex);
1291
1292 /*
1293 * The worker might have been waiting for the mutex, let it run and
1294 * discover that its list is now empty.
1295 */
1296 cancel_work_sync(&mvm->async_handlers_wk);
1297 }
1298
iwl_mvm_get_free_phy_ctxt(struct iwl_mvm * mvm)1299 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1300 {
1301 u16 i;
1302
1303 lockdep_assert_held(&mvm->mutex);
1304
1305 for (i = 0; i < NUM_PHY_CTX; i++)
1306 if (!mvm->phy_ctxts[i].ref)
1307 return &mvm->phy_ctxts[i];
1308
1309 IWL_ERR(mvm, "No available PHY context\n");
1310 return NULL;
1311 }
1312
iwl_mvm_set_tx_power(struct iwl_mvm * mvm,struct ieee80211_vif * vif,s16 tx_power)1313 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1314 s16 tx_power)
1315 {
1316 int len;
1317 struct iwl_dev_tx_power_cmd cmd = {
1318 .common.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1319 .common.mac_context_id =
1320 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1321 .common.pwr_restriction = cpu_to_le16(8 * tx_power),
1322 };
1323 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
1324 REDUCE_TX_POWER_CMD,
1325 IWL_FW_CMD_VER_UNKNOWN);
1326
1327 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1328 cmd.common.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1329
1330 if (cmd_ver == 6)
1331 len = sizeof(cmd.v6);
1332 else if (fw_has_api(&mvm->fw->ucode_capa,
1333 IWL_UCODE_TLV_API_REDUCE_TX_POWER))
1334 len = sizeof(cmd.v5);
1335 else if (fw_has_capa(&mvm->fw->ucode_capa,
1336 IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1337 len = sizeof(cmd.v4);
1338 else
1339 len = sizeof(cmd.v3);
1340
1341 /* all structs have the same common part, add it */
1342 len += sizeof(cmd.common);
1343
1344 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1345 }
1346
iwl_mvm_post_channel_switch(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1347 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
1348 struct ieee80211_vif *vif)
1349 {
1350 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1351 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1352 int ret;
1353
1354 mutex_lock(&mvm->mutex);
1355
1356 if (mvmvif->csa_failed) {
1357 mvmvif->csa_failed = false;
1358 ret = -EIO;
1359 goto out_unlock;
1360 }
1361
1362 if (vif->type == NL80211_IFTYPE_STATION) {
1363 struct iwl_mvm_sta *mvmsta;
1364
1365 mvmvif->csa_bcn_pending = false;
1366 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
1367 mvmvif->ap_sta_id);
1368
1369 if (WARN_ON(!mvmsta)) {
1370 ret = -EIO;
1371 goto out_unlock;
1372 }
1373
1374 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
1375
1376 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1377
1378 if (!fw_has_capa(&mvm->fw->ucode_capa,
1379 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
1380 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1381 if (ret)
1382 goto out_unlock;
1383
1384 iwl_mvm_stop_session_protection(mvm, vif);
1385 }
1386 }
1387
1388 mvmvif->ps_disabled = false;
1389
1390 ret = iwl_mvm_power_update_ps(mvm);
1391
1392 out_unlock:
1393 mutex_unlock(&mvm->mutex);
1394
1395 return ret;
1396 }
1397
iwl_mvm_abort_channel_switch(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1398 static void iwl_mvm_abort_channel_switch(struct ieee80211_hw *hw,
1399 struct ieee80211_vif *vif)
1400 {
1401 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1402 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1403 struct iwl_chan_switch_te_cmd cmd = {
1404 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1405 mvmvif->color)),
1406 .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE),
1407 };
1408
1409 IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id);
1410
1411 mutex_lock(&mvm->mutex);
1412 if (!fw_has_capa(&mvm->fw->ucode_capa,
1413 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
1414 iwl_mvm_remove_csa_period(mvm, vif);
1415 else
1416 WARN_ON(iwl_mvm_send_cmd_pdu(mvm,
1417 WIDE_ID(MAC_CONF_GROUP,
1418 CHANNEL_SWITCH_TIME_EVENT_CMD),
1419 0, sizeof(cmd), &cmd));
1420 mutex_unlock(&mvm->mutex);
1421
1422 WARN_ON(iwl_mvm_post_channel_switch(hw, vif));
1423 }
1424
iwl_mvm_channel_switch_disconnect_wk(struct work_struct * wk)1425 static void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk)
1426 {
1427 struct iwl_mvm *mvm;
1428 struct iwl_mvm_vif *mvmvif;
1429 struct ieee80211_vif *vif;
1430
1431 mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work);
1432 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);
1433 mvm = mvmvif->mvm;
1434
1435 iwl_mvm_abort_channel_switch(mvm->hw, vif);
1436 ieee80211_chswitch_done(vif, false);
1437 }
1438
iwl_mvm_mac_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1439 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1440 struct ieee80211_vif *vif)
1441 {
1442 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1443 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1444 int ret;
1445
1446 mvmvif->mvm = mvm;
1447 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1448
1449 /*
1450 * Not much to do here. The stack will not allow interface
1451 * types or combinations that we didn't advertise, so we
1452 * don't really have to check the types.
1453 */
1454
1455 mutex_lock(&mvm->mutex);
1456
1457 /* make sure that beacon statistics don't go backwards with FW reset */
1458 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1459 mvmvif->beacon_stats.accu_num_beacons +=
1460 mvmvif->beacon_stats.num_beacons;
1461
1462 /* Allocate resources for the MAC context, and add it to the fw */
1463 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1464 if (ret)
1465 goto out_unlock;
1466
1467 rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif);
1468
1469 /* Counting number of interfaces is needed for legacy PM */
1470 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1471 mvm->vif_count++;
1472
1473 /*
1474 * The AP binding flow can be done only after the beacon
1475 * template is configured (which happens only in the mac80211
1476 * start_ap() flow), and adding the broadcast station can happen
1477 * only after the binding.
1478 * In addition, since modifying the MAC before adding a bcast
1479 * station is not allowed by the FW, delay the adding of MAC context to
1480 * the point where we can also add the bcast station.
1481 * In short: there's not much we can do at this point, other than
1482 * allocating resources :)
1483 */
1484 if (vif->type == NL80211_IFTYPE_AP ||
1485 vif->type == NL80211_IFTYPE_ADHOC) {
1486 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1487 if (ret) {
1488 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1489 goto out_release;
1490 }
1491
1492 /*
1493 * Only queue for this station is the mcast queue,
1494 * which shouldn't be in TFD mask anyway
1495 */
1496 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1497 0, vif->type,
1498 IWL_STA_MULTICAST);
1499 if (ret)
1500 goto out_release;
1501
1502 iwl_mvm_vif_dbgfs_register(mvm, vif);
1503 goto out_unlock;
1504 }
1505
1506 mvmvif->features |= hw->netdev_features;
1507
1508 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1509 if (ret)
1510 goto out_release;
1511
1512 ret = iwl_mvm_power_update_mac(mvm);
1513 if (ret)
1514 goto out_remove_mac;
1515
1516 /* beacon filtering */
1517 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1518 if (ret)
1519 goto out_remove_mac;
1520
1521 if (!mvm->bf_allowed_vif &&
1522 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1523 mvm->bf_allowed_vif = mvmvif;
1524 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1525 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1526 }
1527
1528 /*
1529 * P2P_DEVICE interface does not have a channel context assigned to it,
1530 * so a dedicated PHY context is allocated to it and the corresponding
1531 * MAC context is bound to it at this stage.
1532 */
1533 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1534
1535 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1536 if (!mvmvif->phy_ctxt) {
1537 ret = -ENOSPC;
1538 goto out_free_bf;
1539 }
1540
1541 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1542 ret = iwl_mvm_binding_add_vif(mvm, vif);
1543 if (ret)
1544 goto out_unref_phy;
1545
1546 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif);
1547 if (ret)
1548 goto out_unbind;
1549
1550 /* Save a pointer to p2p device vif, so it can later be used to
1551 * update the p2p device MAC when a GO is started/stopped */
1552 mvm->p2p_device_vif = vif;
1553 }
1554
1555 iwl_mvm_tcm_add_vif(mvm, vif);
1556 INIT_DELAYED_WORK(&mvmvif->csa_work,
1557 iwl_mvm_channel_switch_disconnect_wk);
1558
1559 if (vif->type == NL80211_IFTYPE_MONITOR)
1560 mvm->monitor_on = true;
1561
1562 iwl_mvm_vif_dbgfs_register(mvm, vif);
1563 goto out_unlock;
1564
1565 out_unbind:
1566 iwl_mvm_binding_remove_vif(mvm, vif);
1567 out_unref_phy:
1568 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1569 out_free_bf:
1570 if (mvm->bf_allowed_vif == mvmvif) {
1571 mvm->bf_allowed_vif = NULL;
1572 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1573 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1574 }
1575 out_remove_mac:
1576 mvmvif->phy_ctxt = NULL;
1577 iwl_mvm_mac_ctxt_remove(mvm, vif);
1578 out_release:
1579 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1580 mvm->vif_count--;
1581 out_unlock:
1582 mutex_unlock(&mvm->mutex);
1583
1584 return ret;
1585 }
1586
iwl_mvm_prepare_mac_removal(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1587 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1588 struct ieee80211_vif *vif)
1589 {
1590 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1591 /*
1592 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1593 * We assume here that all the packets sent to the OFFCHANNEL
1594 * queue are sent in ROC session.
1595 */
1596 flush_work(&mvm->roc_done_wk);
1597 }
1598 }
1599
iwl_mvm_mac_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1600 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1601 struct ieee80211_vif *vif)
1602 {
1603 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1604 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1605 struct iwl_probe_resp_data *probe_data;
1606
1607 iwl_mvm_prepare_mac_removal(mvm, vif);
1608
1609 if (!(vif->type == NL80211_IFTYPE_AP ||
1610 vif->type == NL80211_IFTYPE_ADHOC))
1611 iwl_mvm_tcm_rm_vif(mvm, vif);
1612
1613 mutex_lock(&mvm->mutex);
1614
1615 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data,
1616 lockdep_is_held(&mvm->mutex));
1617 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1618 if (probe_data)
1619 kfree_rcu(probe_data, rcu_head);
1620
1621 if (mvm->bf_allowed_vif == mvmvif) {
1622 mvm->bf_allowed_vif = NULL;
1623 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1624 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1625 }
1626
1627 if (vif->bss_conf.ftm_responder)
1628 memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats));
1629
1630 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1631
1632 /*
1633 * For AP/GO interface, the tear down of the resources allocated to the
1634 * interface is be handled as part of the stop_ap flow.
1635 */
1636 if (vif->type == NL80211_IFTYPE_AP ||
1637 vif->type == NL80211_IFTYPE_ADHOC) {
1638 #ifdef CONFIG_NL80211_TESTMODE
1639 if (vif == mvm->noa_vif) {
1640 mvm->noa_vif = NULL;
1641 mvm->noa_duration = 0;
1642 }
1643 #endif
1644 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1645 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1646 goto out_release;
1647 }
1648
1649 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1650 mvm->p2p_device_vif = NULL;
1651 iwl_mvm_rm_p2p_bcast_sta(mvm, vif);
1652 iwl_mvm_binding_remove_vif(mvm, vif);
1653 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1654 mvmvif->phy_ctxt = NULL;
1655 }
1656
1657 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1658 mvm->vif_count--;
1659
1660 iwl_mvm_power_update_mac(mvm);
1661 iwl_mvm_mac_ctxt_remove(mvm, vif);
1662
1663 RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL);
1664
1665 if (vif->type == NL80211_IFTYPE_MONITOR)
1666 mvm->monitor_on = false;
1667
1668 out_release:
1669 mutex_unlock(&mvm->mutex);
1670 }
1671
iwl_mvm_mac_config(struct ieee80211_hw * hw,u32 changed)1672 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1673 {
1674 return 0;
1675 }
1676
1677 struct iwl_mvm_mc_iter_data {
1678 struct iwl_mvm *mvm;
1679 int port_id;
1680 };
1681
iwl_mvm_mc_iface_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)1682 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1683 struct ieee80211_vif *vif)
1684 {
1685 struct iwl_mvm_mc_iter_data *data = _data;
1686 struct iwl_mvm *mvm = data->mvm;
1687 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1688 struct iwl_host_cmd hcmd = {
1689 .id = MCAST_FILTER_CMD,
1690 .flags = CMD_ASYNC,
1691 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1692 };
1693 int ret, len;
1694
1695 /* if we don't have free ports, mcast frames will be dropped */
1696 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1697 return;
1698
1699 if (vif->type != NL80211_IFTYPE_STATION ||
1700 !vif->bss_conf.assoc)
1701 return;
1702
1703 cmd->port_id = data->port_id++;
1704 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1705 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1706
1707 hcmd.len[0] = len;
1708 hcmd.data[0] = cmd;
1709
1710 ret = iwl_mvm_send_cmd(mvm, &hcmd);
1711 if (ret)
1712 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1713 }
1714
iwl_mvm_recalc_multicast(struct iwl_mvm * mvm)1715 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1716 {
1717 struct iwl_mvm_mc_iter_data iter_data = {
1718 .mvm = mvm,
1719 };
1720
1721 lockdep_assert_held(&mvm->mutex);
1722
1723 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1724 return;
1725
1726 ieee80211_iterate_active_interfaces_atomic(
1727 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1728 iwl_mvm_mc_iface_iterator, &iter_data);
1729 }
1730
iwl_mvm_prepare_multicast(struct ieee80211_hw * hw,struct netdev_hw_addr_list * mc_list)1731 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1732 struct netdev_hw_addr_list *mc_list)
1733 {
1734 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1735 struct iwl_mcast_filter_cmd *cmd;
1736 struct netdev_hw_addr *addr;
1737 int addr_count;
1738 bool pass_all;
1739 int len;
1740
1741 addr_count = netdev_hw_addr_list_count(mc_list);
1742 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1743 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1744 if (pass_all)
1745 addr_count = 0;
1746
1747 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1748 cmd = kzalloc(len, GFP_ATOMIC);
1749 if (!cmd)
1750 return 0;
1751
1752 if (pass_all) {
1753 cmd->pass_all = 1;
1754 return (u64)(unsigned long)cmd;
1755 }
1756
1757 netdev_hw_addr_list_for_each(addr, mc_list) {
1758 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1759 cmd->count, addr->addr);
1760 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1761 addr->addr, ETH_ALEN);
1762 cmd->count++;
1763 }
1764
1765 return (u64)(unsigned long)cmd;
1766 }
1767
iwl_mvm_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)1768 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1769 unsigned int changed_flags,
1770 unsigned int *total_flags,
1771 u64 multicast)
1772 {
1773 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1774 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1775
1776 mutex_lock(&mvm->mutex);
1777
1778 /* replace previous configuration */
1779 kfree(mvm->mcast_filter_cmd);
1780 mvm->mcast_filter_cmd = cmd;
1781
1782 if (!cmd)
1783 goto out;
1784
1785 if (changed_flags & FIF_ALLMULTI)
1786 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);
1787
1788 if (cmd->pass_all)
1789 cmd->count = 0;
1790
1791 iwl_mvm_recalc_multicast(mvm);
1792 out:
1793 mutex_unlock(&mvm->mutex);
1794 *total_flags = 0;
1795 }
1796
iwl_mvm_config_iface_filter(struct ieee80211_hw * hw,struct ieee80211_vif * vif,unsigned int filter_flags,unsigned int changed_flags)1797 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1798 struct ieee80211_vif *vif,
1799 unsigned int filter_flags,
1800 unsigned int changed_flags)
1801 {
1802 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1803
1804 /* We support only filter for probe requests */
1805 if (!(changed_flags & FIF_PROBE_REQ))
1806 return;
1807
1808 /* Supported only for p2p client interfaces */
1809 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1810 !vif->p2p)
1811 return;
1812
1813 mutex_lock(&mvm->mutex);
1814 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1815 mutex_unlock(&mvm->mutex);
1816 }
1817
1818 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1819 struct iwl_bcast_iter_data {
1820 struct iwl_mvm *mvm;
1821 struct iwl_bcast_filter_cmd *cmd;
1822 u8 current_filter;
1823 };
1824
1825 static void
iwl_mvm_set_bcast_filter(struct ieee80211_vif * vif,const struct iwl_fw_bcast_filter * in_filter,struct iwl_fw_bcast_filter * out_filter)1826 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1827 const struct iwl_fw_bcast_filter *in_filter,
1828 struct iwl_fw_bcast_filter *out_filter)
1829 {
1830 struct iwl_fw_bcast_filter_attr *attr;
1831 int i;
1832
1833 memcpy(out_filter, in_filter, sizeof(*out_filter));
1834
1835 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1836 attr = &out_filter->attrs[i];
1837
1838 if (!attr->mask)
1839 break;
1840
1841 switch (attr->reserved1) {
1842 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1843 if (vif->bss_conf.arp_addr_cnt != 1) {
1844 attr->mask = 0;
1845 continue;
1846 }
1847
1848 attr->val = vif->bss_conf.arp_addr_list[0];
1849 break;
1850 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1851 attr->val = *(__be32 *)&vif->addr[2];
1852 break;
1853 default:
1854 break;
1855 }
1856 attr->reserved1 = 0;
1857 out_filter->num_attrs++;
1858 }
1859 }
1860
iwl_mvm_bcast_filter_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)1861 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1862 struct ieee80211_vif *vif)
1863 {
1864 struct iwl_bcast_iter_data *data = _data;
1865 struct iwl_mvm *mvm = data->mvm;
1866 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1867 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1868 struct iwl_fw_bcast_mac *bcast_mac;
1869 int i;
1870
1871 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1872 return;
1873
1874 bcast_mac = &cmd->macs[mvmvif->id];
1875
1876 /*
1877 * enable filtering only for associated stations, but not for P2P
1878 * Clients
1879 */
1880 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1881 !vif->bss_conf.assoc)
1882 return;
1883
1884 bcast_mac->default_discard = 1;
1885
1886 /* copy all configured filters */
1887 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1888 /*
1889 * Make sure we don't exceed our filters limit.
1890 * if there is still a valid filter to be configured,
1891 * be on the safe side and just allow bcast for this mac.
1892 */
1893 if (WARN_ON_ONCE(data->current_filter >=
1894 ARRAY_SIZE(cmd->filters))) {
1895 bcast_mac->default_discard = 0;
1896 bcast_mac->attached_filters = 0;
1897 break;
1898 }
1899
1900 iwl_mvm_set_bcast_filter(vif,
1901 &mvm->bcast_filters[i],
1902 &cmd->filters[data->current_filter]);
1903
1904 /* skip current filter if it contains no attributes */
1905 if (!cmd->filters[data->current_filter].num_attrs)
1906 continue;
1907
1908 /* attach the filter to current mac */
1909 bcast_mac->attached_filters |=
1910 cpu_to_le16(BIT(data->current_filter));
1911
1912 data->current_filter++;
1913 }
1914 }
1915
iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm * mvm,struct iwl_bcast_filter_cmd * cmd)1916 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1917 struct iwl_bcast_filter_cmd *cmd)
1918 {
1919 struct iwl_bcast_iter_data iter_data = {
1920 .mvm = mvm,
1921 .cmd = cmd,
1922 };
1923
1924 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1925 return false;
1926
1927 memset(cmd, 0, sizeof(*cmd));
1928 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1929 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1930
1931 #ifdef CONFIG_IWLWIFI_DEBUGFS
1932 /* use debugfs filters/macs if override is configured */
1933 if (mvm->dbgfs_bcast_filtering.override) {
1934 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1935 sizeof(cmd->filters));
1936 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1937 sizeof(cmd->macs));
1938 return true;
1939 }
1940 #endif
1941
1942 /* if no filters are configured, do nothing */
1943 if (!mvm->bcast_filters)
1944 return false;
1945
1946 /* configure and attach these filters for each associated sta vif */
1947 ieee80211_iterate_active_interfaces(
1948 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1949 iwl_mvm_bcast_filter_iterator, &iter_data);
1950
1951 return true;
1952 }
1953
iwl_mvm_configure_bcast_filter(struct iwl_mvm * mvm)1954 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1955 {
1956 struct iwl_bcast_filter_cmd cmd;
1957
1958 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1959 return 0;
1960
1961 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1962 return 0;
1963
1964 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1965 sizeof(cmd), &cmd);
1966 }
1967 #else
iwl_mvm_configure_bcast_filter(struct iwl_mvm * mvm)1968 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1969 {
1970 return 0;
1971 }
1972 #endif
1973
iwl_mvm_update_mu_groups(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1974 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1975 struct ieee80211_vif *vif)
1976 {
1977 struct iwl_mu_group_mgmt_cmd cmd = {};
1978
1979 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1980 WLAN_MEMBERSHIP_LEN);
1981 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1982 WLAN_USER_POSITION_LEN);
1983
1984 return iwl_mvm_send_cmd_pdu(mvm,
1985 WIDE_ID(DATA_PATH_GROUP,
1986 UPDATE_MU_GROUPS_CMD),
1987 0, sizeof(cmd), &cmd);
1988 }
1989
iwl_mvm_mu_mimo_iface_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)1990 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1991 struct ieee80211_vif *vif)
1992 {
1993 if (vif->mu_mimo_owner) {
1994 struct iwl_mu_group_mgmt_notif *notif = _data;
1995
1996 /*
1997 * MU-MIMO Group Id action frame is little endian. We treat
1998 * the data received from firmware as if it came from the
1999 * action frame, so no conversion is needed.
2000 */
2001 ieee80211_update_mu_groups(vif,
2002 (u8 *)¬if->membership_status,
2003 (u8 *)¬if->user_position);
2004 }
2005 }
2006
iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)2007 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
2008 struct iwl_rx_cmd_buffer *rxb)
2009 {
2010 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2011 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
2012
2013 ieee80211_iterate_active_interfaces_atomic(
2014 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2015 iwl_mvm_mu_mimo_iface_iterator, notif);
2016 }
2017
iwl_mvm_he_get_ppe_val(u8 * ppe,u8 ppe_pos_bit)2018 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit)
2019 {
2020 u8 byte_num = ppe_pos_bit / 8;
2021 u8 bit_num = ppe_pos_bit % 8;
2022 u8 residue_bits;
2023 u8 res;
2024
2025 if (bit_num <= 5)
2026 return (ppe[byte_num] >> bit_num) &
2027 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1);
2028
2029 /*
2030 * If bit_num > 5, we have to combine bits with next byte.
2031 * Calculate how many bits we need to take from current byte (called
2032 * here "residue_bits"), and add them to bits from next byte.
2033 */
2034
2035 residue_bits = 8 - bit_num;
2036
2037 res = (ppe[byte_num + 1] &
2038 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) <<
2039 residue_bits;
2040 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1);
2041
2042 return res;
2043 }
2044
iwl_mvm_cfg_he_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u8 sta_id)2045 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm,
2046 struct ieee80211_vif *vif, u8 sta_id)
2047 {
2048 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2049 struct iwl_he_sta_context_cmd sta_ctxt_cmd = {
2050 .sta_id = sta_id,
2051 .tid_limit = IWL_MAX_TID_COUNT,
2052 .bss_color = vif->bss_conf.he_bss_color.color,
2053 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext,
2054 .frame_time_rts_th =
2055 cpu_to_le16(vif->bss_conf.frame_time_rts_th),
2056 };
2057 int size = fw_has_api(&mvm->fw->ucode_capa,
2058 IWL_UCODE_TLV_API_MBSSID_HE) ?
2059 sizeof(sta_ctxt_cmd) :
2060 sizeof(struct iwl_he_sta_context_cmd_v1);
2061 struct ieee80211_sta *sta;
2062 u32 flags;
2063 int i;
2064
2065 rcu_read_lock();
2066
2067 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]);
2068 if (IS_ERR_OR_NULL(sta)) {
2069 rcu_read_unlock();
2070 WARN(1, "Can't find STA to configure HE\n");
2071 return;
2072 }
2073
2074 if (!sta->he_cap.has_he) {
2075 rcu_read_unlock();
2076 return;
2077 }
2078
2079 flags = 0;
2080
2081 /* Block 26-tone RU OFDMA transmissions */
2082 if (mvmvif->he_ru_2mhz_block)
2083 flags |= STA_CTXT_HE_RU_2MHZ_BLOCK;
2084
2085 /* HTC flags */
2086 if (sta->he_cap.he_cap_elem.mac_cap_info[0] &
2087 IEEE80211_HE_MAC_CAP0_HTC_HE)
2088 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT);
2089 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] &
2090 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) ||
2091 (sta->he_cap.he_cap_elem.mac_cap_info[2] &
2092 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) {
2093 u8 link_adap =
2094 ((sta->he_cap.he_cap_elem.mac_cap_info[2] &
2095 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) +
2096 (sta->he_cap.he_cap_elem.mac_cap_info[1] &
2097 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION);
2098
2099 if (link_adap == 2)
2100 sta_ctxt_cmd.htc_flags |=
2101 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED);
2102 else if (link_adap == 3)
2103 sta_ctxt_cmd.htc_flags |=
2104 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH);
2105 }
2106 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR)
2107 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP);
2108 if (sta->he_cap.he_cap_elem.mac_cap_info[3] &
2109 IEEE80211_HE_MAC_CAP3_OMI_CONTROL)
2110 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP);
2111 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR)
2112 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP);
2113
2114 /*
2115 * Initialize the PPE thresholds to "None" (7), as described in Table
2116 * 9-262ac of 80211.ax/D3.0.
2117 */
2118 memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext));
2119
2120 /* If PPE Thresholds exist, parse them into a FW-familiar format. */
2121 if (sta->he_cap.he_cap_elem.phy_cap_info[6] &
2122 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) {
2123 u8 nss = (sta->he_cap.ppe_thres[0] &
2124 IEEE80211_PPE_THRES_NSS_MASK) + 1;
2125 u8 ru_index_bitmap =
2126 (sta->he_cap.ppe_thres[0] &
2127 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >>
2128 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS;
2129 u8 *ppe = &sta->he_cap.ppe_thres[0];
2130 u8 ppe_pos_bit = 7; /* Starting after PPE header */
2131
2132 /*
2133 * FW currently supports only nss == MAX_HE_SUPP_NSS
2134 *
2135 * If nss > MAX: we can ignore values we don't support
2136 * If nss < MAX: we can set zeros in other streams
2137 */
2138 if (nss > MAX_HE_SUPP_NSS) {
2139 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss,
2140 MAX_HE_SUPP_NSS);
2141 nss = MAX_HE_SUPP_NSS;
2142 }
2143
2144 for (i = 0; i < nss; i++) {
2145 u8 ru_index_tmp = ru_index_bitmap << 1;
2146 u8 bw;
2147
2148 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) {
2149 ru_index_tmp >>= 1;
2150 if (!(ru_index_tmp & 1))
2151 continue;
2152
2153 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] =
2154 iwl_mvm_he_get_ppe_val(ppe,
2155 ppe_pos_bit);
2156 ppe_pos_bit +=
2157 IEEE80211_PPE_THRES_INFO_PPET_SIZE;
2158 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] =
2159 iwl_mvm_he_get_ppe_val(ppe,
2160 ppe_pos_bit);
2161 ppe_pos_bit +=
2162 IEEE80211_PPE_THRES_INFO_PPET_SIZE;
2163 }
2164 }
2165
2166 flags |= STA_CTXT_HE_PACKET_EXT;
2167 } else if ((sta->he_cap.he_cap_elem.phy_cap_info[9] &
2168 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) !=
2169 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_RESERVED) {
2170 int low_th = -1;
2171 int high_th = -1;
2172
2173 /* Take the PPE thresholds from the nominal padding info */
2174 switch (sta->he_cap.he_cap_elem.phy_cap_info[9] &
2175 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) {
2176 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_0US:
2177 low_th = IWL_HE_PKT_EXT_NONE;
2178 high_th = IWL_HE_PKT_EXT_NONE;
2179 break;
2180 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_8US:
2181 low_th = IWL_HE_PKT_EXT_BPSK;
2182 high_th = IWL_HE_PKT_EXT_NONE;
2183 break;
2184 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_16US:
2185 low_th = IWL_HE_PKT_EXT_NONE;
2186 high_th = IWL_HE_PKT_EXT_BPSK;
2187 break;
2188 }
2189
2190 /* Set the PPE thresholds accordingly */
2191 if (low_th >= 0 && high_th >= 0) {
2192 struct iwl_he_pkt_ext *pkt_ext =
2193 (struct iwl_he_pkt_ext *)&sta_ctxt_cmd.pkt_ext;
2194
2195 for (i = 0; i < MAX_HE_SUPP_NSS; i++) {
2196 u8 bw;
2197
2198 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX;
2199 bw++) {
2200 pkt_ext->pkt_ext_qam_th[i][bw][0] =
2201 low_th;
2202 pkt_ext->pkt_ext_qam_th[i][bw][1] =
2203 high_th;
2204 }
2205 }
2206
2207 flags |= STA_CTXT_HE_PACKET_EXT;
2208 }
2209 }
2210
2211 if (sta->he_cap.he_cap_elem.mac_cap_info[2] &
2212 IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP)
2213 flags |= STA_CTXT_HE_32BIT_BA_BITMAP;
2214
2215 if (sta->he_cap.he_cap_elem.mac_cap_info[2] &
2216 IEEE80211_HE_MAC_CAP2_ACK_EN)
2217 flags |= STA_CTXT_HE_ACK_ENABLED;
2218
2219 rcu_read_unlock();
2220
2221 /* Mark MU EDCA as enabled, unless none detected on some AC */
2222 flags |= STA_CTXT_HE_MU_EDCA_CW;
2223 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
2224 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca =
2225 &mvmvif->queue_params[i].mu_edca_param_rec;
2226 u8 ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
2227
2228 if (!mvmvif->queue_params[i].mu_edca) {
2229 flags &= ~STA_CTXT_HE_MU_EDCA_CW;
2230 break;
2231 }
2232
2233 sta_ctxt_cmd.trig_based_txf[ac].cwmin =
2234 cpu_to_le16(mu_edca->ecw_min_max & 0xf);
2235 sta_ctxt_cmd.trig_based_txf[ac].cwmax =
2236 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4);
2237 sta_ctxt_cmd.trig_based_txf[ac].aifsn =
2238 cpu_to_le16(mu_edca->aifsn);
2239 sta_ctxt_cmd.trig_based_txf[ac].mu_time =
2240 cpu_to_le16(mu_edca->mu_edca_timer);
2241 }
2242
2243
2244 if (vif->bss_conf.uora_exists) {
2245 flags |= STA_CTXT_HE_TRIG_RND_ALLOC;
2246
2247 sta_ctxt_cmd.rand_alloc_ecwmin =
2248 vif->bss_conf.uora_ocw_range & 0x7;
2249 sta_ctxt_cmd.rand_alloc_ecwmax =
2250 (vif->bss_conf.uora_ocw_range >> 3) & 0x7;
2251 }
2252
2253 if (vif->bss_conf.nontransmitted) {
2254 flags |= STA_CTXT_HE_REF_BSSID_VALID;
2255 ether_addr_copy(sta_ctxt_cmd.ref_bssid_addr,
2256 vif->bss_conf.transmitter_bssid);
2257 sta_ctxt_cmd.max_bssid_indicator =
2258 vif->bss_conf.bssid_indicator;
2259 sta_ctxt_cmd.bssid_index = vif->bss_conf.bssid_index;
2260 sta_ctxt_cmd.ema_ap = vif->bss_conf.ema_ap;
2261 sta_ctxt_cmd.profile_periodicity =
2262 vif->bss_conf.profile_periodicity;
2263 }
2264
2265 sta_ctxt_cmd.flags = cpu_to_le32(flags);
2266
2267 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD,
2268 DATA_PATH_GROUP, 0),
2269 0, size, &sta_ctxt_cmd))
2270 IWL_ERR(mvm, "Failed to config FW to work HE!\n");
2271 }
2272
iwl_mvm_bss_info_changed_station(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u32 changes)2273 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2274 struct ieee80211_vif *vif,
2275 struct ieee80211_bss_conf *bss_conf,
2276 u32 changes)
2277 {
2278 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2279 int ret;
2280
2281 /*
2282 * Re-calculate the tsf id, as the leader-follower relations depend
2283 * on the beacon interval, which was not known when the station
2284 * interface was added.
2285 */
2286 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) {
2287 if (vif->bss_conf.he_support &&
2288 !iwlwifi_mod_params.disable_11ax)
2289 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
2290
2291 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2292 }
2293
2294 /* Update MU EDCA params */
2295 if (changes & BSS_CHANGED_QOS && mvmvif->associated &&
2296 bss_conf->assoc && vif->bss_conf.he_support &&
2297 !iwlwifi_mod_params.disable_11ax)
2298 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
2299
2300 /*
2301 * If we're not associated yet, take the (new) BSSID before associating
2302 * so the firmware knows. If we're already associated, then use the old
2303 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2304 * branch for disassociation below.
2305 */
2306 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2307 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2308
2309 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2310 if (ret)
2311 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2312
2313 /* after sending it once, adopt mac80211 data */
2314 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2315 mvmvif->associated = bss_conf->assoc;
2316
2317 if (changes & BSS_CHANGED_ASSOC) {
2318 if (bss_conf->assoc) {
2319 /* clear statistics to get clean beacon counter */
2320 iwl_mvm_request_statistics(mvm, true);
2321 memset(&mvmvif->beacon_stats, 0,
2322 sizeof(mvmvif->beacon_stats));
2323
2324 /* add quota for this interface */
2325 ret = iwl_mvm_update_quotas(mvm, true, NULL);
2326 if (ret) {
2327 IWL_ERR(mvm, "failed to update quotas\n");
2328 return;
2329 }
2330
2331 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2332 &mvm->status) &&
2333 !fw_has_capa(&mvm->fw->ucode_capa,
2334 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) {
2335 /*
2336 * If we're restarting then the firmware will
2337 * obviously have lost synchronisation with
2338 * the AP. It will attempt to synchronise by
2339 * itself, but we can make it more reliable by
2340 * scheduling a session protection time event.
2341 *
2342 * The firmware needs to receive a beacon to
2343 * catch up with synchronisation, use 110% of
2344 * the beacon interval.
2345 *
2346 * Set a large maximum delay to allow for more
2347 * than a single interface.
2348 *
2349 * For new firmware versions, rely on the
2350 * firmware. This is relevant for DCM scenarios
2351 * only anyway.
2352 */
2353 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2354 iwl_mvm_protect_session(mvm, vif, dur, dur,
2355 5 * dur, false);
2356 }
2357
2358 iwl_mvm_sf_update(mvm, vif, false);
2359 iwl_mvm_power_vif_assoc(mvm, vif);
2360 if (vif->p2p) {
2361 iwl_mvm_update_smps(mvm, vif,
2362 IWL_MVM_SMPS_REQ_PROT,
2363 IEEE80211_SMPS_DYNAMIC);
2364 }
2365 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
2366 /*
2367 * If update fails - SF might be running in associated
2368 * mode while disassociated - which is forbidden.
2369 */
2370 ret = iwl_mvm_sf_update(mvm, vif, false);
2371 WARN_ONCE(ret &&
2372 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
2373 &mvm->status),
2374 "Failed to update SF upon disassociation\n");
2375
2376 /*
2377 * If we get an assert during the connection (after the
2378 * station has been added, but before the vif is set
2379 * to associated), mac80211 will re-add the station and
2380 * then configure the vif. Since the vif is not
2381 * associated, we would remove the station here and
2382 * this would fail the recovery.
2383 */
2384 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2385 &mvm->status)) {
2386 /*
2387 * Remove AP station now that
2388 * the MAC is unassoc
2389 */
2390 ret = iwl_mvm_rm_sta_id(mvm, vif,
2391 mvmvif->ap_sta_id);
2392 if (ret)
2393 IWL_ERR(mvm,
2394 "failed to remove AP station\n");
2395
2396 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
2397 }
2398
2399 /* remove quota for this interface */
2400 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2401 if (ret)
2402 IWL_ERR(mvm, "failed to update quotas\n");
2403
2404 /* this will take the cleared BSSID from bss_conf */
2405 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2406 if (ret)
2407 IWL_ERR(mvm,
2408 "failed to update MAC %pM (clear after unassoc)\n",
2409 vif->addr);
2410 }
2411
2412 /*
2413 * The firmware tracks the MU-MIMO group on its own.
2414 * However, on HW restart we should restore this data.
2415 */
2416 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2417 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2418 ret = iwl_mvm_update_mu_groups(mvm, vif);
2419 if (ret)
2420 IWL_ERR(mvm,
2421 "failed to update VHT MU_MIMO groups\n");
2422 }
2423
2424 iwl_mvm_recalc_multicast(mvm);
2425 iwl_mvm_configure_bcast_filter(mvm);
2426
2427 /* reset rssi values */
2428 mvmvif->bf_data.ave_beacon_signal = 0;
2429
2430 iwl_mvm_bt_coex_vif_change(mvm);
2431 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2432 IEEE80211_SMPS_AUTOMATIC);
2433 if (fw_has_capa(&mvm->fw->ucode_capa,
2434 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2435 iwl_mvm_config_scan(mvm);
2436 }
2437
2438 if (changes & BSS_CHANGED_BEACON_INFO) {
2439 /*
2440 * We received a beacon from the associated AP so
2441 * remove the session protection.
2442 * A firmware with the new API will remove it automatically.
2443 */
2444 if (!fw_has_capa(&mvm->fw->ucode_capa,
2445 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD))
2446 iwl_mvm_stop_session_protection(mvm, vif);
2447
2448 iwl_mvm_sf_update(mvm, vif, false);
2449 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2450 }
2451
2452 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2453 /*
2454 * Send power command on every beacon change,
2455 * because we may have not enabled beacon abort yet.
2456 */
2457 BSS_CHANGED_BEACON_INFO)) {
2458 ret = iwl_mvm_power_update_mac(mvm);
2459 if (ret)
2460 IWL_ERR(mvm, "failed to update power mode\n");
2461 }
2462
2463 if (changes & BSS_CHANGED_TXPOWER) {
2464 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2465 bss_conf->txpower);
2466 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2467 }
2468
2469 if (changes & BSS_CHANGED_CQM) {
2470 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2471 /* reset cqm events tracking */
2472 mvmvif->bf_data.last_cqm_event = 0;
2473 if (mvmvif->bf_data.bf_enabled) {
2474 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2475 if (ret)
2476 IWL_ERR(mvm,
2477 "failed to update CQM thresholds\n");
2478 }
2479 }
2480
2481 if (changes & BSS_CHANGED_ARP_FILTER) {
2482 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2483 iwl_mvm_configure_bcast_filter(mvm);
2484 }
2485 }
2486
iwl_mvm_start_ap_ibss(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2487 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2488 struct ieee80211_vif *vif)
2489 {
2490 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2491 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2492 int ret, i;
2493
2494 mutex_lock(&mvm->mutex);
2495
2496 /* Send the beacon template */
2497 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2498 if (ret)
2499 goto out_unlock;
2500
2501 /*
2502 * Re-calculate the tsf id, as the leader-follower relations depend on
2503 * the beacon interval, which was not known when the AP interface
2504 * was added.
2505 */
2506 if (vif->type == NL80211_IFTYPE_AP)
2507 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2508
2509 mvmvif->ap_assoc_sta_count = 0;
2510
2511 /* Add the mac context */
2512 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2513 if (ret)
2514 goto out_unlock;
2515
2516 /* Perform the binding */
2517 ret = iwl_mvm_binding_add_vif(mvm, vif);
2518 if (ret)
2519 goto out_remove;
2520
2521 /*
2522 * This is not very nice, but the simplest:
2523 * For older FWs adding the mcast sta before the bcast station may
2524 * cause assert 0x2b00.
2525 * This is fixed in later FW so make the order of removal depend on
2526 * the TLV
2527 */
2528 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2529 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2530 if (ret)
2531 goto out_unbind;
2532 /*
2533 * Send the bcast station. At this stage the TBTT and DTIM time
2534 * events are added and applied to the scheduler
2535 */
2536 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2537 if (ret) {
2538 iwl_mvm_rm_mcast_sta(mvm, vif);
2539 goto out_unbind;
2540 }
2541 } else {
2542 /*
2543 * Send the bcast station. At this stage the TBTT and DTIM time
2544 * events are added and applied to the scheduler
2545 */
2546 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2547 if (ret)
2548 goto out_unbind;
2549 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2550 if (ret) {
2551 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2552 goto out_unbind;
2553 }
2554 }
2555
2556 /* must be set before quota calculations */
2557 mvmvif->ap_ibss_active = true;
2558
2559 /* send all the early keys to the device now */
2560 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) {
2561 struct ieee80211_key_conf *key = mvmvif->ap_early_keys[i];
2562
2563 if (!key)
2564 continue;
2565
2566 mvmvif->ap_early_keys[i] = NULL;
2567
2568 ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key);
2569 if (ret)
2570 goto out_quota_failed;
2571 }
2572
2573 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) {
2574 iwl_mvm_vif_set_low_latency(mvmvif, true,
2575 LOW_LATENCY_VIF_TYPE);
2576 iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id);
2577 }
2578
2579 /* power updated needs to be done before quotas */
2580 iwl_mvm_power_update_mac(mvm);
2581
2582 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2583 if (ret)
2584 goto out_quota_failed;
2585
2586 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2587 if (vif->p2p && mvm->p2p_device_vif)
2588 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2589
2590 iwl_mvm_bt_coex_vif_change(mvm);
2591
2592 /* we don't support TDLS during DCM */
2593 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2594 iwl_mvm_teardown_tdls_peers(mvm);
2595
2596 iwl_mvm_ftm_restart_responder(mvm, vif);
2597
2598 goto out_unlock;
2599
2600 out_quota_failed:
2601 iwl_mvm_power_update_mac(mvm);
2602 mvmvif->ap_ibss_active = false;
2603 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2604 iwl_mvm_rm_mcast_sta(mvm, vif);
2605 out_unbind:
2606 iwl_mvm_binding_remove_vif(mvm, vif);
2607 out_remove:
2608 iwl_mvm_mac_ctxt_remove(mvm, vif);
2609 out_unlock:
2610 mutex_unlock(&mvm->mutex);
2611 return ret;
2612 }
2613
iwl_mvm_stop_ap_ibss(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2614 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2615 struct ieee80211_vif *vif)
2616 {
2617 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2618 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2619
2620 iwl_mvm_prepare_mac_removal(mvm, vif);
2621
2622 mutex_lock(&mvm->mutex);
2623
2624 /* Handle AP stop while in CSA */
2625 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2626 iwl_mvm_remove_time_event(mvm, mvmvif,
2627 &mvmvif->time_event_data);
2628 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2629 mvmvif->csa_countdown = false;
2630 }
2631
2632 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2633 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2634 mvm->csa_tx_block_bcn_timeout = 0;
2635 }
2636
2637 mvmvif->ap_ibss_active = false;
2638 mvm->ap_last_beacon_gp2 = 0;
2639
2640 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) {
2641 iwl_mvm_vif_set_low_latency(mvmvif, false,
2642 LOW_LATENCY_VIF_TYPE);
2643 iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id);
2644 }
2645
2646 iwl_mvm_bt_coex_vif_change(mvm);
2647
2648 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2649 if (vif->p2p && mvm->p2p_device_vif)
2650 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2651
2652 iwl_mvm_update_quotas(mvm, false, NULL);
2653
2654 iwl_mvm_ftm_responder_clear(mvm, vif);
2655
2656 /*
2657 * This is not very nice, but the simplest:
2658 * For older FWs removing the mcast sta before the bcast station may
2659 * cause assert 0x2b00.
2660 * This is fixed in later FW (which will stop beaconing when removing
2661 * bcast station).
2662 * So make the order of removal depend on the TLV
2663 */
2664 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2665 iwl_mvm_rm_mcast_sta(mvm, vif);
2666 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2667 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2668 iwl_mvm_rm_mcast_sta(mvm, vif);
2669 iwl_mvm_binding_remove_vif(mvm, vif);
2670
2671 iwl_mvm_power_update_mac(mvm);
2672
2673 iwl_mvm_mac_ctxt_remove(mvm, vif);
2674
2675 mutex_unlock(&mvm->mutex);
2676 }
2677
2678 static void
iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u32 changes)2679 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2680 struct ieee80211_vif *vif,
2681 struct ieee80211_bss_conf *bss_conf,
2682 u32 changes)
2683 {
2684 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2685
2686 /* Changes will be applied when the AP/IBSS is started */
2687 if (!mvmvif->ap_ibss_active)
2688 return;
2689
2690 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2691 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2692 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2693 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2694
2695 /* Need to send a new beacon template to the FW */
2696 if (changes & BSS_CHANGED_BEACON &&
2697 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2698 IWL_WARN(mvm, "Failed updating beacon data\n");
2699
2700 if (changes & BSS_CHANGED_TXPOWER) {
2701 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2702 bss_conf->txpower);
2703 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2704 }
2705
2706 if (changes & BSS_CHANGED_FTM_RESPONDER) {
2707 int ret = iwl_mvm_ftm_start_responder(mvm, vif);
2708
2709 if (ret)
2710 IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n",
2711 ret);
2712 }
2713
2714 }
2715
iwl_mvm_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u32 changes)2716 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2717 struct ieee80211_vif *vif,
2718 struct ieee80211_bss_conf *bss_conf,
2719 u32 changes)
2720 {
2721 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2722
2723 mutex_lock(&mvm->mutex);
2724
2725 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2726 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2727
2728 switch (vif->type) {
2729 case NL80211_IFTYPE_STATION:
2730 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2731 break;
2732 case NL80211_IFTYPE_AP:
2733 case NL80211_IFTYPE_ADHOC:
2734 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2735 break;
2736 case NL80211_IFTYPE_MONITOR:
2737 if (changes & BSS_CHANGED_MU_GROUPS)
2738 iwl_mvm_update_mu_groups(mvm, vif);
2739 break;
2740 default:
2741 /* shouldn't happen */
2742 WARN_ON_ONCE(1);
2743 }
2744
2745 mutex_unlock(&mvm->mutex);
2746 }
2747
iwl_mvm_mac_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_scan_request * hw_req)2748 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2749 struct ieee80211_vif *vif,
2750 struct ieee80211_scan_request *hw_req)
2751 {
2752 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2753 int ret;
2754
2755 if (hw_req->req.n_channels == 0 ||
2756 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2757 return -EINVAL;
2758
2759 mutex_lock(&mvm->mutex);
2760 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2761 mutex_unlock(&mvm->mutex);
2762
2763 return ret;
2764 }
2765
iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2766 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2767 struct ieee80211_vif *vif)
2768 {
2769 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2770
2771 mutex_lock(&mvm->mutex);
2772
2773 /* Due to a race condition, it's possible that mac80211 asks
2774 * us to stop a hw_scan when it's already stopped. This can
2775 * happen, for instance, if we stopped the scan ourselves,
2776 * called ieee80211_scan_completed() and the userspace called
2777 * cancel scan scan before ieee80211_scan_work() could run.
2778 * To handle that, simply return if the scan is not running.
2779 */
2780 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2781 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2782
2783 mutex_unlock(&mvm->mutex);
2784 }
2785
2786 static void
iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tids,int num_frames,enum ieee80211_frame_release_type reason,bool more_data)2787 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2788 struct ieee80211_sta *sta, u16 tids,
2789 int num_frames,
2790 enum ieee80211_frame_release_type reason,
2791 bool more_data)
2792 {
2793 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2794
2795 /* Called when we need to transmit (a) frame(s) from mac80211 */
2796
2797 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2798 tids, more_data, false);
2799 }
2800
2801 static void
iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tids,int num_frames,enum ieee80211_frame_release_type reason,bool more_data)2802 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2803 struct ieee80211_sta *sta, u16 tids,
2804 int num_frames,
2805 enum ieee80211_frame_release_type reason,
2806 bool more_data)
2807 {
2808 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2809
2810 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2811
2812 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2813 tids, more_data, true);
2814 }
2815
__iwl_mvm_mac_sta_notify(struct ieee80211_hw * hw,enum sta_notify_cmd cmd,struct ieee80211_sta * sta)2816 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2817 enum sta_notify_cmd cmd,
2818 struct ieee80211_sta *sta)
2819 {
2820 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2821 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2822 unsigned long txqs = 0, tids = 0;
2823 int tid;
2824
2825 /*
2826 * If we have TVQM then we get too high queue numbers - luckily
2827 * we really shouldn't get here with that because such hardware
2828 * should have firmware supporting buffer station offload.
2829 */
2830 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
2831 return;
2832
2833 spin_lock_bh(&mvmsta->lock);
2834 for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) {
2835 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2836
2837 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2838 continue;
2839
2840 __set_bit(tid_data->txq_id, &txqs);
2841
2842 if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2843 continue;
2844
2845 __set_bit(tid, &tids);
2846 }
2847
2848 switch (cmd) {
2849 case STA_NOTIFY_SLEEP:
2850 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2851 ieee80211_sta_set_buffered(sta, tid, true);
2852
2853 if (txqs)
2854 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2855 /*
2856 * The fw updates the STA to be asleep. Tx packets on the Tx
2857 * queues to this station will not be transmitted. The fw will
2858 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2859 */
2860 break;
2861 case STA_NOTIFY_AWAKE:
2862 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2863 break;
2864
2865 if (txqs)
2866 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2867 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2868 break;
2869 default:
2870 break;
2871 }
2872 spin_unlock_bh(&mvmsta->lock);
2873 }
2874
iwl_mvm_mac_sta_notify(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum sta_notify_cmd cmd,struct ieee80211_sta * sta)2875 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2876 struct ieee80211_vif *vif,
2877 enum sta_notify_cmd cmd,
2878 struct ieee80211_sta *sta)
2879 {
2880 __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2881 }
2882
iwl_mvm_sta_pm_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)2883 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2884 {
2885 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2886 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2887 struct ieee80211_sta *sta;
2888 struct iwl_mvm_sta *mvmsta;
2889 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2890
2891 if (WARN_ON(notif->sta_id >= mvm->fw->ucode_capa.num_stations))
2892 return;
2893
2894 rcu_read_lock();
2895 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2896 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2897 rcu_read_unlock();
2898 return;
2899 }
2900
2901 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2902
2903 if (!mvmsta->vif ||
2904 mvmsta->vif->type != NL80211_IFTYPE_AP) {
2905 rcu_read_unlock();
2906 return;
2907 }
2908
2909 if (mvmsta->sleeping != sleeping) {
2910 mvmsta->sleeping = sleeping;
2911 __iwl_mvm_mac_sta_notify(mvm->hw,
2912 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2913 sta);
2914 ieee80211_sta_ps_transition(sta, sleeping);
2915 }
2916
2917 if (sleeping) {
2918 switch (notif->type) {
2919 case IWL_MVM_PM_EVENT_AWAKE:
2920 case IWL_MVM_PM_EVENT_ASLEEP:
2921 break;
2922 case IWL_MVM_PM_EVENT_UAPSD:
2923 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2924 break;
2925 case IWL_MVM_PM_EVENT_PS_POLL:
2926 ieee80211_sta_pspoll(sta);
2927 break;
2928 default:
2929 break;
2930 }
2931 }
2932
2933 rcu_read_unlock();
2934 }
2935
iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)2936 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2937 struct ieee80211_vif *vif,
2938 struct ieee80211_sta *sta)
2939 {
2940 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2941 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2942
2943 /*
2944 * This is called before mac80211 does RCU synchronisation,
2945 * so here we already invalidate our internal RCU-protected
2946 * station pointer. The rest of the code will thus no longer
2947 * be able to find the station this way, and we don't rely
2948 * on further RCU synchronisation after the sta_state()
2949 * callback deleted the station.
2950 */
2951 mutex_lock(&mvm->mutex);
2952 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2953 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2954 ERR_PTR(-ENOENT));
2955
2956 mutex_unlock(&mvm->mutex);
2957 }
2958
iwl_mvm_check_uapsd(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const u8 * bssid)2959 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2960 const u8 *bssid)
2961 {
2962 int i;
2963
2964 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
2965 struct iwl_mvm_tcm_mac *mdata;
2966
2967 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id];
2968 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
2969 mdata->opened_rx_ba_sessions = false;
2970 }
2971
2972 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2973 return;
2974
2975 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2976 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2977 return;
2978 }
2979
2980 if (!vif->p2p &&
2981 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2982 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2983 return;
2984 }
2985
2986 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) {
2987 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) {
2988 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2989 return;
2990 }
2991 }
2992
2993 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2994 }
2995
2996 static void
iwl_mvm_tdls_check_trigger(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u8 * peer_addr,enum nl80211_tdls_operation action)2997 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2998 struct ieee80211_vif *vif, u8 *peer_addr,
2999 enum nl80211_tdls_operation action)
3000 {
3001 struct iwl_fw_dbg_trigger_tlv *trig;
3002 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
3003
3004 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
3005 FW_DBG_TRIGGER_TDLS);
3006 if (!trig)
3007 return;
3008
3009 tdls_trig = (void *)trig->data;
3010
3011 if (!(tdls_trig->action_bitmap & BIT(action)))
3012 return;
3013
3014 if (tdls_trig->peer_mode &&
3015 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
3016 return;
3017
3018 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
3019 "TDLS event occurred, peer %pM, action %d",
3020 peer_addr, action);
3021 }
3022
3023 struct iwl_mvm_he_obss_narrow_bw_ru_data {
3024 bool tolerated;
3025 };
3026
iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy * wiphy,struct cfg80211_bss * bss,void * _data)3027 static void iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy,
3028 struct cfg80211_bss *bss,
3029 void *_data)
3030 {
3031 struct iwl_mvm_he_obss_narrow_bw_ru_data *data = _data;
3032 const struct cfg80211_bss_ies *ies;
3033 const struct element *elem;
3034
3035 rcu_read_lock();
3036 ies = rcu_dereference(bss->ies);
3037 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, ies->data,
3038 ies->len);
3039
3040 if (!elem || elem->datalen < 10 ||
3041 !(elem->data[10] &
3042 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) {
3043 data->tolerated = false;
3044 }
3045 rcu_read_unlock();
3046 }
3047
iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw * hw,struct ieee80211_vif * vif)3048 static void iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw *hw,
3049 struct ieee80211_vif *vif)
3050 {
3051 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3052 struct iwl_mvm_he_obss_narrow_bw_ru_data iter_data = {
3053 .tolerated = true,
3054 };
3055
3056 if (!(vif->bss_conf.chandef.chan->flags & IEEE80211_CHAN_RADAR)) {
3057 mvmvif->he_ru_2mhz_block = false;
3058 return;
3059 }
3060
3061 cfg80211_bss_iter(hw->wiphy, &vif->bss_conf.chandef,
3062 iwl_mvm_check_he_obss_narrow_bw_ru_iter,
3063 &iter_data);
3064
3065 /*
3066 * If there is at least one AP on radar channel that cannot
3067 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU.
3068 */
3069 mvmvif->he_ru_2mhz_block = !iter_data.tolerated;
3070 }
3071
iwl_mvm_mac_sta_state(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,enum ieee80211_sta_state old_state,enum ieee80211_sta_state new_state)3072 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
3073 struct ieee80211_vif *vif,
3074 struct ieee80211_sta *sta,
3075 enum ieee80211_sta_state old_state,
3076 enum ieee80211_sta_state new_state)
3077 {
3078 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3079 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3080 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3081 int ret;
3082
3083 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
3084 sta->addr, old_state, new_state);
3085
3086 /* this would be a mac80211 bug ... but don't crash */
3087 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
3088 return test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) ? 0 : -EINVAL;
3089
3090 /*
3091 * If we are in a STA removal flow and in DQA mode:
3092 *
3093 * This is after the sync_rcu part, so the queues have already been
3094 * flushed. No more TXs on their way in mac80211's path, and no more in
3095 * the queues.
3096 * Also, we won't be getting any new TX frames for this station.
3097 * What we might have are deferred TX frames that need to be taken care
3098 * of.
3099 *
3100 * Drop any still-queued deferred-frame before removing the STA, and
3101 * make sure the worker is no longer handling frames for this STA.
3102 */
3103 if (old_state == IEEE80211_STA_NONE &&
3104 new_state == IEEE80211_STA_NOTEXIST) {
3105 flush_work(&mvm->add_stream_wk);
3106
3107 /*
3108 * No need to make sure deferred TX indication is off since the
3109 * worker will already remove it if it was on
3110 */
3111 }
3112
3113 mutex_lock(&mvm->mutex);
3114 /* track whether or not the station is associated */
3115 mvm_sta->sta_state = new_state;
3116
3117 if (old_state == IEEE80211_STA_NOTEXIST &&
3118 new_state == IEEE80211_STA_NONE) {
3119 /*
3120 * Firmware bug - it'll crash if the beacon interval is less
3121 * than 16. We can't avoid connecting at all, so refuse the
3122 * station state change, this will cause mac80211 to abandon
3123 * attempts to connect to this AP, and eventually wpa_s will
3124 * blocklist the AP...
3125 */
3126 if (vif->type == NL80211_IFTYPE_STATION &&
3127 vif->bss_conf.beacon_int < 16) {
3128 IWL_ERR(mvm,
3129 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
3130 sta->addr, vif->bss_conf.beacon_int);
3131 ret = -EINVAL;
3132 goto out_unlock;
3133 }
3134
3135 if (vif->type == NL80211_IFTYPE_STATION)
3136 vif->bss_conf.he_support = sta->he_cap.has_he;
3137
3138 if (sta->tdls &&
3139 (vif->p2p ||
3140 iwl_mvm_tdls_sta_count(mvm, NULL) ==
3141 IWL_MVM_TDLS_STA_COUNT ||
3142 iwl_mvm_phy_ctx_count(mvm) > 1)) {
3143 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
3144 ret = -EBUSY;
3145 goto out_unlock;
3146 }
3147
3148 ret = iwl_mvm_add_sta(mvm, vif, sta);
3149 if (sta->tdls && ret == 0) {
3150 iwl_mvm_recalc_tdls_state(mvm, vif, true);
3151 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3152 NL80211_TDLS_SETUP);
3153 }
3154
3155 sta->max_rc_amsdu_len = 1;
3156 } else if (old_state == IEEE80211_STA_NONE &&
3157 new_state == IEEE80211_STA_AUTH) {
3158 /*
3159 * EBS may be disabled due to previous failures reported by FW.
3160 * Reset EBS status here assuming environment has been changed.
3161 */
3162 mvm->last_ebs_successful = true;
3163 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
3164 ret = 0;
3165 } else if (old_state == IEEE80211_STA_AUTH &&
3166 new_state == IEEE80211_STA_ASSOC) {
3167 if (vif->type == NL80211_IFTYPE_AP) {
3168 vif->bss_conf.he_support = sta->he_cap.has_he;
3169 mvmvif->ap_assoc_sta_count++;
3170 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3171 if (vif->bss_conf.he_support &&
3172 !iwlwifi_mod_params.disable_11ax)
3173 iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id);
3174 } else if (vif->type == NL80211_IFTYPE_STATION) {
3175 vif->bss_conf.he_support = sta->he_cap.has_he;
3176
3177 mvmvif->he_ru_2mhz_block = false;
3178 if (sta->he_cap.has_he)
3179 iwl_mvm_check_he_obss_narrow_bw_ru(hw, vif);
3180
3181 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3182 }
3183
3184 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3185 false);
3186 ret = iwl_mvm_update_sta(mvm, vif, sta);
3187 } else if (old_state == IEEE80211_STA_ASSOC &&
3188 new_state == IEEE80211_STA_AUTHORIZED) {
3189 ret = 0;
3190
3191 /* we don't support TDLS during DCM */
3192 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3193 iwl_mvm_teardown_tdls_peers(mvm);
3194
3195 if (sta->tdls)
3196 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3197 NL80211_TDLS_ENABLE_LINK);
3198
3199 /* enable beacon filtering */
3200 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
3201
3202 /*
3203 * Now that the station is authorized, i.e., keys were already
3204 * installed, need to indicate to the FW that
3205 * multicast data frames can be forwarded to the driver
3206 */
3207 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3208
3209 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3210 true);
3211 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
3212 new_state == IEEE80211_STA_ASSOC) {
3213 /* Multicast data frames are no longer allowed */
3214 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3215
3216 /* disable beacon filtering */
3217 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3218 WARN_ON(ret &&
3219 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
3220 &mvm->status));
3221 ret = 0;
3222 } else if (old_state == IEEE80211_STA_ASSOC &&
3223 new_state == IEEE80211_STA_AUTH) {
3224 if (vif->type == NL80211_IFTYPE_AP) {
3225 mvmvif->ap_assoc_sta_count--;
3226 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3227 }
3228 ret = 0;
3229 } else if (old_state == IEEE80211_STA_AUTH &&
3230 new_state == IEEE80211_STA_NONE) {
3231 ret = 0;
3232 } else if (old_state == IEEE80211_STA_NONE &&
3233 new_state == IEEE80211_STA_NOTEXIST) {
3234 ret = iwl_mvm_rm_sta(mvm, vif, sta);
3235 if (sta->tdls) {
3236 iwl_mvm_recalc_tdls_state(mvm, vif, false);
3237 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3238 NL80211_TDLS_DISABLE_LINK);
3239 }
3240
3241 if (unlikely(ret &&
3242 test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
3243 &mvm->status)))
3244 ret = 0;
3245 } else {
3246 ret = -EIO;
3247 }
3248 out_unlock:
3249 mutex_unlock(&mvm->mutex);
3250
3251 if (sta->tdls && ret == 0) {
3252 if (old_state == IEEE80211_STA_NOTEXIST &&
3253 new_state == IEEE80211_STA_NONE)
3254 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3255 else if (old_state == IEEE80211_STA_NONE &&
3256 new_state == IEEE80211_STA_NOTEXIST)
3257 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3258 }
3259
3260 return ret;
3261 }
3262
iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw * hw,u32 value)3263 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3264 {
3265 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3266
3267 mvm->rts_threshold = value;
3268
3269 return 0;
3270 }
3271
iwl_mvm_sta_rc_update(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u32 changed)3272 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
3273 struct ieee80211_vif *vif,
3274 struct ieee80211_sta *sta, u32 changed)
3275 {
3276 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3277 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3278
3279 if (changed & (IEEE80211_RC_BW_CHANGED |
3280 IEEE80211_RC_SUPP_RATES_CHANGED |
3281 IEEE80211_RC_NSS_CHANGED))
3282 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3283 true);
3284
3285 if (vif->type == NL80211_IFTYPE_STATION &&
3286 changed & IEEE80211_RC_NSS_CHANGED)
3287 iwl_mvm_sf_update(mvm, vif, false);
3288 }
3289
iwl_mvm_mac_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 ac,const struct ieee80211_tx_queue_params * params)3290 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
3291 struct ieee80211_vif *vif, u16 ac,
3292 const struct ieee80211_tx_queue_params *params)
3293 {
3294 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3295 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3296
3297 mvmvif->queue_params[ac] = *params;
3298
3299 /*
3300 * No need to update right away, we'll get BSS_CHANGED_QOS
3301 * The exception is P2P_DEVICE interface which needs immediate update.
3302 */
3303 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
3304 int ret;
3305
3306 mutex_lock(&mvm->mutex);
3307 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3308 mutex_unlock(&mvm->mutex);
3309 return ret;
3310 }
3311 return 0;
3312 }
3313
iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 req_duration)3314 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
3315 struct ieee80211_vif *vif,
3316 u16 req_duration)
3317 {
3318 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3319 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
3320 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
3321
3322 if (req_duration > duration)
3323 duration = req_duration;
3324
3325 mutex_lock(&mvm->mutex);
3326 /* Try really hard to protect the session and hear a beacon
3327 * The new session protection command allows us to protect the
3328 * session for a much longer time since the firmware will internally
3329 * create two events: a 300TU one with a very high priority that
3330 * won't be fragmented which should be enough for 99% of the cases,
3331 * and another one (which we configure here to be 900TU long) which
3332 * will have a slightly lower priority, but more importantly, can be
3333 * fragmented so that it'll allow other activities to run.
3334 */
3335 if (fw_has_capa(&mvm->fw->ucode_capa,
3336 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD))
3337 iwl_mvm_schedule_session_protection(mvm, vif, 900,
3338 min_duration, false);
3339 else
3340 iwl_mvm_protect_session(mvm, vif, duration,
3341 min_duration, 500, false);
3342 mutex_unlock(&mvm->mutex);
3343 }
3344
iwl_mvm_mac_sched_scan_start(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_sched_scan_request * req,struct ieee80211_scan_ies * ies)3345 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
3346 struct ieee80211_vif *vif,
3347 struct cfg80211_sched_scan_request *req,
3348 struct ieee80211_scan_ies *ies)
3349 {
3350 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3351
3352 int ret;
3353
3354 mutex_lock(&mvm->mutex);
3355
3356 if (!vif->bss_conf.idle) {
3357 ret = -EBUSY;
3358 goto out;
3359 }
3360
3361 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
3362
3363 out:
3364 mutex_unlock(&mvm->mutex);
3365 return ret;
3366 }
3367
iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw * hw,struct ieee80211_vif * vif)3368 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
3369 struct ieee80211_vif *vif)
3370 {
3371 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3372 int ret;
3373
3374 mutex_lock(&mvm->mutex);
3375
3376 /* Due to a race condition, it's possible that mac80211 asks
3377 * us to stop a sched_scan when it's already stopped. This
3378 * can happen, for instance, if we stopped the scan ourselves,
3379 * called ieee80211_sched_scan_stopped() and the userspace called
3380 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
3381 * could run. To handle this, simply return if the scan is
3382 * not running.
3383 */
3384 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
3385 mutex_unlock(&mvm->mutex);
3386 return 0;
3387 }
3388
3389 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
3390 mutex_unlock(&mvm->mutex);
3391 iwl_mvm_wait_for_async_handlers(mvm);
3392
3393 return ret;
3394 }
3395
__iwl_mvm_mac_set_key(struct ieee80211_hw * hw,enum set_key_cmd cmd,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)3396 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
3397 enum set_key_cmd cmd,
3398 struct ieee80211_vif *vif,
3399 struct ieee80211_sta *sta,
3400 struct ieee80211_key_conf *key)
3401 {
3402 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3403 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3404 struct iwl_mvm_sta *mvmsta;
3405 struct iwl_mvm_key_pn *ptk_pn;
3406 int keyidx = key->keyidx;
3407 int ret, i;
3408 u8 key_offset;
3409
3410 switch (key->cipher) {
3411 case WLAN_CIPHER_SUITE_TKIP:
3412 if (!mvm->trans->trans_cfg->gen2) {
3413 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3414 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3415 } else if (vif->type == NL80211_IFTYPE_STATION) {
3416 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE;
3417 } else {
3418 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n");
3419 return -EOPNOTSUPP;
3420 }
3421 break;
3422 case WLAN_CIPHER_SUITE_CCMP:
3423 case WLAN_CIPHER_SUITE_GCMP:
3424 case WLAN_CIPHER_SUITE_GCMP_256:
3425 if (!iwl_mvm_has_new_tx_api(mvm))
3426 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3427 break;
3428 case WLAN_CIPHER_SUITE_AES_CMAC:
3429 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3430 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3431 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
3432 break;
3433 case WLAN_CIPHER_SUITE_WEP40:
3434 case WLAN_CIPHER_SUITE_WEP104:
3435 if (vif->type == NL80211_IFTYPE_STATION)
3436 break;
3437 if (iwl_mvm_has_new_tx_api(mvm))
3438 return -EOPNOTSUPP;
3439 /* support HW crypto on TX */
3440 return 0;
3441 default:
3442 /* currently FW supports only one optional cipher scheme */
3443 if (hw->n_cipher_schemes &&
3444 hw->cipher_schemes->cipher == key->cipher)
3445 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3446 else
3447 return -EOPNOTSUPP;
3448 }
3449
3450 switch (cmd) {
3451 case SET_KEY:
3452 if ((vif->type == NL80211_IFTYPE_ADHOC ||
3453 vif->type == NL80211_IFTYPE_AP) && !sta) {
3454 /*
3455 * GTK on AP interface is a TX-only key, return 0;
3456 * on IBSS they're per-station and because we're lazy
3457 * we don't support them for RX, so do the same.
3458 * CMAC/GMAC in AP/IBSS modes must be done in software.
3459 */
3460 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3461 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3462 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
3463 ret = -EOPNOTSUPP;
3464 break;
3465 }
3466
3467 if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
3468 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
3469 !iwl_mvm_has_new_tx_api(mvm)) {
3470 key->hw_key_idx = STA_KEY_IDX_INVALID;
3471 ret = 0;
3472 break;
3473 }
3474
3475 if (!mvmvif->ap_ibss_active) {
3476 for (i = 0;
3477 i < ARRAY_SIZE(mvmvif->ap_early_keys);
3478 i++) {
3479 if (!mvmvif->ap_early_keys[i]) {
3480 mvmvif->ap_early_keys[i] = key;
3481 break;
3482 }
3483 }
3484
3485 if (i >= ARRAY_SIZE(mvmvif->ap_early_keys))
3486 ret = -ENOSPC;
3487 else
3488 ret = 0;
3489
3490 break;
3491 }
3492 }
3493
3494 /* During FW restart, in order to restore the state as it was,
3495 * don't try to reprogram keys we previously failed for.
3496 */
3497 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3498 key->hw_key_idx == STA_KEY_IDX_INVALID) {
3499 IWL_DEBUG_MAC80211(mvm,
3500 "skip invalid idx key programming during restart\n");
3501 ret = 0;
3502 break;
3503 }
3504
3505 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3506 sta && iwl_mvm_has_new_rx_api(mvm) &&
3507 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3508 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3509 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3510 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3511 struct ieee80211_key_seq seq;
3512 int tid, q;
3513
3514 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3515 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
3516 ptk_pn = kzalloc(struct_size(ptk_pn, q,
3517 mvm->trans->num_rx_queues),
3518 GFP_KERNEL);
3519 if (!ptk_pn) {
3520 ret = -ENOMEM;
3521 break;
3522 }
3523
3524 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
3525 ieee80211_get_key_rx_seq(key, tid, &seq);
3526 for (q = 0; q < mvm->trans->num_rx_queues; q++)
3527 memcpy(ptk_pn->q[q].pn[tid],
3528 seq.ccmp.pn,
3529 IEEE80211_CCMP_PN_LEN);
3530 }
3531
3532 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
3533 }
3534
3535 /* in HW restart reuse the index, otherwise request a new one */
3536 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3537 key_offset = key->hw_key_idx;
3538 else
3539 key_offset = STA_KEY_IDX_INVALID;
3540
3541 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3542 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
3543 if (ret) {
3544 IWL_WARN(mvm, "set key failed\n");
3545 key->hw_key_idx = STA_KEY_IDX_INVALID;
3546 /*
3547 * can't add key for RX, but we don't need it
3548 * in the device for TX so still return 0,
3549 * unless we have new TX API where we cannot
3550 * put key material into the TX_CMD
3551 */
3552 if (iwl_mvm_has_new_tx_api(mvm))
3553 ret = -EOPNOTSUPP;
3554 else
3555 ret = 0;
3556 }
3557
3558 break;
3559 case DISABLE_KEY:
3560 ret = -ENOENT;
3561 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) {
3562 if (mvmvif->ap_early_keys[i] == key) {
3563 mvmvif->ap_early_keys[i] = NULL;
3564 ret = 0;
3565 }
3566 }
3567
3568 /* found in pending list - don't do anything else */
3569 if (ret == 0)
3570 break;
3571
3572 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3573 ret = 0;
3574 break;
3575 }
3576
3577 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
3578 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3579 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3580 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3581 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3582 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3583 ptk_pn = rcu_dereference_protected(
3584 mvmsta->ptk_pn[keyidx],
3585 lockdep_is_held(&mvm->mutex));
3586 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3587 if (ptk_pn)
3588 kfree_rcu(ptk_pn, rcu_head);
3589 }
3590
3591 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3592 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3593 break;
3594 default:
3595 ret = -EINVAL;
3596 }
3597
3598 return ret;
3599 }
3600
iwl_mvm_mac_set_key(struct ieee80211_hw * hw,enum set_key_cmd cmd,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)3601 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
3602 enum set_key_cmd cmd,
3603 struct ieee80211_vif *vif,
3604 struct ieee80211_sta *sta,
3605 struct ieee80211_key_conf *key)
3606 {
3607 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3608 int ret;
3609
3610 mutex_lock(&mvm->mutex);
3611 ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key);
3612 mutex_unlock(&mvm->mutex);
3613
3614 return ret;
3615 }
3616
iwl_mvm_mac_update_tkip_key(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_key_conf * keyconf,struct ieee80211_sta * sta,u32 iv32,u16 * phase1key)3617 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3618 struct ieee80211_vif *vif,
3619 struct ieee80211_key_conf *keyconf,
3620 struct ieee80211_sta *sta,
3621 u32 iv32, u16 *phase1key)
3622 {
3623 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3624
3625 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3626 return;
3627
3628 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3629 }
3630
3631
iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data * notif_wait,struct iwl_rx_packet * pkt,void * data)3632 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3633 struct iwl_rx_packet *pkt, void *data)
3634 {
3635 struct iwl_mvm *mvm =
3636 container_of(notif_wait, struct iwl_mvm, notif_wait);
3637 struct iwl_hs20_roc_res *resp;
3638 int resp_len = iwl_rx_packet_payload_len(pkt);
3639 struct iwl_mvm_time_event_data *te_data = data;
3640
3641 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3642 return true;
3643
3644 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3645 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3646 return true;
3647 }
3648
3649 resp = (void *)pkt->data;
3650
3651 IWL_DEBUG_TE(mvm,
3652 "Aux ROC: Received response from ucode: status=%d uid=%d\n",
3653 resp->status, resp->event_unique_id);
3654
3655 te_data->uid = le32_to_cpu(resp->event_unique_id);
3656 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3657 te_data->uid);
3658
3659 spin_lock_bh(&mvm->time_event_lock);
3660 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3661 spin_unlock_bh(&mvm->time_event_lock);
3662
3663 return true;
3664 }
3665
3666 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3667 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3668 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3669 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3670 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
iwl_mvm_send_aux_roc_cmd(struct iwl_mvm * mvm,struct ieee80211_channel * channel,struct ieee80211_vif * vif,int duration)3671 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3672 struct ieee80211_channel *channel,
3673 struct ieee80211_vif *vif,
3674 int duration)
3675 {
3676 int res;
3677 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3678 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3679 static const u16 time_event_response[] = { HOT_SPOT_CMD };
3680 struct iwl_notification_wait wait_time_event;
3681 u32 dtim_interval = vif->bss_conf.dtim_period *
3682 vif->bss_conf.beacon_int;
3683 u32 req_dur, delay;
3684 struct iwl_hs20_roc_req aux_roc_req = {
3685 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3686 .id_and_color =
3687 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3688 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3689 };
3690 struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm,
3691 &aux_roc_req.channel_info);
3692 u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm);
3693
3694 /* Set the channel info data */
3695 iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value,
3696 iwl_mvm_phy_band_from_nl80211(channel->band),
3697 PHY_VHT_CHANNEL_MODE20,
3698 0);
3699
3700 /* Set the time and duration */
3701 tail->apply_time = cpu_to_le32(iwl_mvm_get_systime(mvm));
3702
3703 delay = AUX_ROC_MIN_DELAY;
3704 req_dur = MSEC_TO_TU(duration);
3705
3706 /*
3707 * If we are associated we want the delay time to be at least one
3708 * dtim interval so that the FW can wait until after the DTIM and
3709 * then start the time event, this will potentially allow us to
3710 * remain off-channel for the max duration.
3711 * Since we want to use almost a whole dtim interval we would also
3712 * like the delay to be for 2-3 dtim intervals, in case there are
3713 * other time events with higher priority.
3714 */
3715 if (vif->bss_conf.assoc) {
3716 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3717 /* We cannot remain off-channel longer than the DTIM interval */
3718 if (dtim_interval <= req_dur) {
3719 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3720 if (req_dur <= AUX_ROC_MIN_DURATION)
3721 req_dur = dtim_interval -
3722 AUX_ROC_MIN_SAFETY_BUFFER;
3723 }
3724 }
3725
3726 tail->duration = cpu_to_le32(req_dur);
3727 tail->apply_time_max_delay = cpu_to_le32(delay);
3728
3729 IWL_DEBUG_TE(mvm,
3730 "ROC: Requesting to remain on channel %u for %ums\n",
3731 channel->hw_value, req_dur);
3732 IWL_DEBUG_TE(mvm,
3733 "\t(requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3734 duration, delay, dtim_interval);
3735
3736 /* Set the node address */
3737 memcpy(tail->node_addr, vif->addr, ETH_ALEN);
3738
3739 lockdep_assert_held(&mvm->mutex);
3740
3741 spin_lock_bh(&mvm->time_event_lock);
3742
3743 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3744 spin_unlock_bh(&mvm->time_event_lock);
3745 return -EIO;
3746 }
3747
3748 te_data->vif = vif;
3749 te_data->duration = duration;
3750 te_data->id = HOT_SPOT_CMD;
3751
3752 spin_unlock_bh(&mvm->time_event_lock);
3753
3754 /*
3755 * Use a notification wait, which really just processes the
3756 * command response and doesn't wait for anything, in order
3757 * to be able to process the response and get the UID inside
3758 * the RX path. Using CMD_WANT_SKB doesn't work because it
3759 * stores the buffer and then wakes up this thread, by which
3760 * time another notification (that the time event started)
3761 * might already be processed unsuccessfully.
3762 */
3763 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3764 time_event_response,
3765 ARRAY_SIZE(time_event_response),
3766 iwl_mvm_rx_aux_roc, te_data);
3767
3768 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, len,
3769 &aux_roc_req);
3770
3771 if (res) {
3772 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3773 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3774 goto out_clear_te;
3775 }
3776
3777 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3778 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3779 /* should never fail */
3780 WARN_ON_ONCE(res);
3781
3782 if (res) {
3783 out_clear_te:
3784 spin_lock_bh(&mvm->time_event_lock);
3785 iwl_mvm_te_clear_data(mvm, te_data);
3786 spin_unlock_bh(&mvm->time_event_lock);
3787 }
3788
3789 return res;
3790 }
3791
iwl_mvm_roc(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel * channel,int duration,enum ieee80211_roc_type type)3792 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3793 struct ieee80211_vif *vif,
3794 struct ieee80211_channel *channel,
3795 int duration,
3796 enum ieee80211_roc_type type)
3797 {
3798 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3799 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3800 struct cfg80211_chan_def chandef;
3801 struct iwl_mvm_phy_ctxt *phy_ctxt;
3802 bool band_change_removal;
3803 int ret, i;
3804
3805 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3806 duration, type);
3807
3808 /*
3809 * Flush the done work, just in case it's still pending, so that
3810 * the work it does can complete and we can accept new frames.
3811 */
3812 flush_work(&mvm->roc_done_wk);
3813
3814 mutex_lock(&mvm->mutex);
3815
3816 switch (vif->type) {
3817 case NL80211_IFTYPE_STATION:
3818 if (fw_has_capa(&mvm->fw->ucode_capa,
3819 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3820 /* Use aux roc framework (HS20) */
3821 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
3822 ADD_STA, 0) >= 12) {
3823 u32 lmac_id;
3824
3825 lmac_id = iwl_mvm_get_lmac_id(mvm->fw,
3826 channel->band);
3827 ret = iwl_mvm_add_aux_sta(mvm, lmac_id);
3828 if (WARN(ret,
3829 "Failed to allocate aux station"))
3830 goto out_unlock;
3831 }
3832 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3833 vif, duration);
3834 goto out_unlock;
3835 }
3836 IWL_ERR(mvm, "hotspot not supported\n");
3837 ret = -EINVAL;
3838 goto out_unlock;
3839 case NL80211_IFTYPE_P2P_DEVICE:
3840 /* handle below */
3841 break;
3842 default:
3843 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3844 ret = -EINVAL;
3845 goto out_unlock;
3846 }
3847
3848 for (i = 0; i < NUM_PHY_CTX; i++) {
3849 phy_ctxt = &mvm->phy_ctxts[i];
3850 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3851 continue;
3852
3853 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3854 /*
3855 * Unbind the P2P_DEVICE from the current PHY context,
3856 * and if the PHY context is not used remove it.
3857 */
3858 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3859 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3860 goto out_unlock;
3861
3862 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3863
3864 /* Bind the P2P_DEVICE to the current PHY Context */
3865 mvmvif->phy_ctxt = phy_ctxt;
3866
3867 ret = iwl_mvm_binding_add_vif(mvm, vif);
3868 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3869 goto out_unlock;
3870
3871 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3872 goto schedule_time_event;
3873 }
3874 }
3875
3876 /* Need to update the PHY context only if the ROC channel changed */
3877 if (channel == mvmvif->phy_ctxt->channel)
3878 goto schedule_time_event;
3879
3880 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3881
3882 /*
3883 * Check if the remain-on-channel is on a different band and that
3884 * requires context removal, see iwl_mvm_phy_ctxt_changed(). If
3885 * so, we'll need to release and then re-configure here, since we
3886 * must not remove a PHY context that's part of a binding.
3887 */
3888 band_change_removal =
3889 fw_has_capa(&mvm->fw->ucode_capa,
3890 IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT) &&
3891 mvmvif->phy_ctxt->channel->band != chandef.chan->band;
3892
3893 if (mvmvif->phy_ctxt->ref == 1 && !band_change_removal) {
3894 /*
3895 * Change the PHY context configuration as it is currently
3896 * referenced only by the P2P Device MAC (and we can modify it)
3897 */
3898 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3899 &chandef, 1, 1);
3900 if (ret)
3901 goto out_unlock;
3902 } else {
3903 /*
3904 * The PHY context is shared with other MACs (or we're trying to
3905 * switch bands), so remove the P2P Device from the binding,
3906 * allocate an new PHY context and create a new binding.
3907 */
3908 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3909 if (!phy_ctxt) {
3910 ret = -ENOSPC;
3911 goto out_unlock;
3912 }
3913
3914 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3915 1, 1);
3916 if (ret) {
3917 IWL_ERR(mvm, "Failed to change PHY context\n");
3918 goto out_unlock;
3919 }
3920
3921 /* Unbind the P2P_DEVICE from the current PHY context */
3922 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3923 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3924 goto out_unlock;
3925
3926 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3927
3928 /* Bind the P2P_DEVICE to the new allocated PHY context */
3929 mvmvif->phy_ctxt = phy_ctxt;
3930
3931 ret = iwl_mvm_binding_add_vif(mvm, vif);
3932 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3933 goto out_unlock;
3934
3935 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3936 }
3937
3938 schedule_time_event:
3939 /* Schedule the time events */
3940 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3941
3942 out_unlock:
3943 mutex_unlock(&mvm->mutex);
3944 IWL_DEBUG_MAC80211(mvm, "leave\n");
3945 return ret;
3946 }
3947
iwl_mvm_cancel_roc(struct ieee80211_hw * hw,struct ieee80211_vif * vif)3948 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw,
3949 struct ieee80211_vif *vif)
3950 {
3951 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3952
3953 IWL_DEBUG_MAC80211(mvm, "enter\n");
3954
3955 mutex_lock(&mvm->mutex);
3956 iwl_mvm_stop_roc(mvm, vif);
3957 mutex_unlock(&mvm->mutex);
3958
3959 IWL_DEBUG_MAC80211(mvm, "leave\n");
3960 return 0;
3961 }
3962
3963 struct iwl_mvm_ftm_responder_iter_data {
3964 bool responder;
3965 struct ieee80211_chanctx_conf *ctx;
3966 };
3967
iwl_mvm_ftm_responder_chanctx_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)3968 static void iwl_mvm_ftm_responder_chanctx_iter(void *_data, u8 *mac,
3969 struct ieee80211_vif *vif)
3970 {
3971 struct iwl_mvm_ftm_responder_iter_data *data = _data;
3972
3973 if (rcu_access_pointer(vif->chanctx_conf) == data->ctx &&
3974 vif->type == NL80211_IFTYPE_AP && vif->bss_conf.ftmr_params)
3975 data->responder = true;
3976 }
3977
iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm * mvm,struct ieee80211_chanctx_conf * ctx)3978 static bool iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm *mvm,
3979 struct ieee80211_chanctx_conf *ctx)
3980 {
3981 struct iwl_mvm_ftm_responder_iter_data data = {
3982 .responder = false,
3983 .ctx = ctx,
3984 };
3985
3986 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
3987 IEEE80211_IFACE_ITER_NORMAL,
3988 iwl_mvm_ftm_responder_chanctx_iter,
3989 &data);
3990 return data.responder;
3991 }
3992
__iwl_mvm_add_chanctx(struct iwl_mvm * mvm,struct ieee80211_chanctx_conf * ctx)3993 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3994 struct ieee80211_chanctx_conf *ctx)
3995 {
3996 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3997 struct iwl_mvm_phy_ctxt *phy_ctxt;
3998 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx);
3999 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def;
4000 int ret;
4001
4002 lockdep_assert_held(&mvm->mutex);
4003
4004 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
4005
4006 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
4007 if (!phy_ctxt) {
4008 ret = -ENOSPC;
4009 goto out;
4010 }
4011
4012 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def,
4013 ctx->rx_chains_static,
4014 ctx->rx_chains_dynamic);
4015 if (ret) {
4016 IWL_ERR(mvm, "Failed to add PHY context\n");
4017 goto out;
4018 }
4019
4020 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
4021 *phy_ctxt_id = phy_ctxt->id;
4022 out:
4023 return ret;
4024 }
4025
iwl_mvm_add_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)4026 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
4027 struct ieee80211_chanctx_conf *ctx)
4028 {
4029 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4030 int ret;
4031
4032 mutex_lock(&mvm->mutex);
4033 ret = __iwl_mvm_add_chanctx(mvm, ctx);
4034 mutex_unlock(&mvm->mutex);
4035
4036 return ret;
4037 }
4038
__iwl_mvm_remove_chanctx(struct iwl_mvm * mvm,struct ieee80211_chanctx_conf * ctx)4039 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
4040 struct ieee80211_chanctx_conf *ctx)
4041 {
4042 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
4043 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
4044
4045 lockdep_assert_held(&mvm->mutex);
4046
4047 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
4048 }
4049
iwl_mvm_remove_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)4050 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
4051 struct ieee80211_chanctx_conf *ctx)
4052 {
4053 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4054
4055 mutex_lock(&mvm->mutex);
4056 __iwl_mvm_remove_chanctx(mvm, ctx);
4057 mutex_unlock(&mvm->mutex);
4058 }
4059
iwl_mvm_change_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx,u32 changed)4060 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
4061 struct ieee80211_chanctx_conf *ctx,
4062 u32 changed)
4063 {
4064 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4065 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
4066 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
4067 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx);
4068 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def;
4069
4070 if (WARN_ONCE((phy_ctxt->ref > 1) &&
4071 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
4072 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
4073 IEEE80211_CHANCTX_CHANGE_RADAR |
4074 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
4075 "Cannot change PHY. Ref=%d, changed=0x%X\n",
4076 phy_ctxt->ref, changed))
4077 return;
4078
4079 mutex_lock(&mvm->mutex);
4080
4081 /* we are only changing the min_width, may be a noop */
4082 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) {
4083 if (phy_ctxt->width == def->width)
4084 goto out_unlock;
4085
4086 /* we are just toggling between 20_NOHT and 20 */
4087 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 &&
4088 def->width <= NL80211_CHAN_WIDTH_20)
4089 goto out_unlock;
4090 }
4091
4092 iwl_mvm_bt_coex_vif_change(mvm);
4093 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def,
4094 ctx->rx_chains_static,
4095 ctx->rx_chains_dynamic);
4096
4097 out_unlock:
4098 mutex_unlock(&mvm->mutex);
4099 }
4100
__iwl_mvm_assign_vif_chanctx(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx,bool switching_chanctx)4101 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
4102 struct ieee80211_vif *vif,
4103 struct ieee80211_chanctx_conf *ctx,
4104 bool switching_chanctx)
4105 {
4106 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
4107 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
4108 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4109 int ret;
4110
4111 lockdep_assert_held(&mvm->mutex);
4112
4113 mvmvif->phy_ctxt = phy_ctxt;
4114
4115 switch (vif->type) {
4116 case NL80211_IFTYPE_AP:
4117 /* only needed if we're switching chanctx (i.e. during CSA) */
4118 if (switching_chanctx) {
4119 mvmvif->ap_ibss_active = true;
4120 break;
4121 }
4122 /* fall through */
4123 case NL80211_IFTYPE_ADHOC:
4124 /*
4125 * The AP binding flow is handled as part of the start_ap flow
4126 * (in bss_info_changed), similarly for IBSS.
4127 */
4128 ret = 0;
4129 goto out;
4130 case NL80211_IFTYPE_STATION:
4131 mvmvif->csa_bcn_pending = false;
4132 break;
4133 case NL80211_IFTYPE_MONITOR:
4134 /* always disable PS when a monitor interface is active */
4135 mvmvif->ps_disabled = true;
4136 break;
4137 default:
4138 ret = -EINVAL;
4139 goto out;
4140 }
4141
4142 ret = iwl_mvm_binding_add_vif(mvm, vif);
4143 if (ret)
4144 goto out;
4145
4146 /*
4147 * Power state must be updated before quotas,
4148 * otherwise fw will complain.
4149 */
4150 iwl_mvm_power_update_mac(mvm);
4151
4152 /* Setting the quota at this stage is only required for monitor
4153 * interfaces. For the other types, the bss_info changed flow
4154 * will handle quota settings.
4155 */
4156 if (vif->type == NL80211_IFTYPE_MONITOR) {
4157 mvmvif->monitor_active = true;
4158 ret = iwl_mvm_update_quotas(mvm, false, NULL);
4159 if (ret)
4160 goto out_remove_binding;
4161
4162 ret = iwl_mvm_add_snif_sta(mvm, vif);
4163 if (ret)
4164 goto out_remove_binding;
4165
4166 }
4167
4168 /* Handle binding during CSA */
4169 if (vif->type == NL80211_IFTYPE_AP) {
4170 iwl_mvm_update_quotas(mvm, false, NULL);
4171 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
4172 }
4173
4174 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
4175 mvmvif->csa_bcn_pending = true;
4176
4177 if (!fw_has_capa(&mvm->fw->ucode_capa,
4178 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
4179 u32 duration = 3 * vif->bss_conf.beacon_int;
4180
4181 /* Protect the session to make sure we hear the first
4182 * beacon on the new channel.
4183 */
4184 iwl_mvm_protect_session(mvm, vif, duration, duration,
4185 vif->bss_conf.beacon_int / 2,
4186 true);
4187 }
4188
4189 iwl_mvm_update_quotas(mvm, false, NULL);
4190 }
4191
4192 goto out;
4193
4194 out_remove_binding:
4195 iwl_mvm_binding_remove_vif(mvm, vif);
4196 iwl_mvm_power_update_mac(mvm);
4197 out:
4198 if (ret)
4199 mvmvif->phy_ctxt = NULL;
4200 return ret;
4201 }
iwl_mvm_assign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx)4202 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
4203 struct ieee80211_vif *vif,
4204 struct ieee80211_chanctx_conf *ctx)
4205 {
4206 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4207 int ret;
4208
4209 mutex_lock(&mvm->mutex);
4210 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
4211 mutex_unlock(&mvm->mutex);
4212
4213 return ret;
4214 }
4215
__iwl_mvm_unassign_vif_chanctx(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx,bool switching_chanctx)4216 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
4217 struct ieee80211_vif *vif,
4218 struct ieee80211_chanctx_conf *ctx,
4219 bool switching_chanctx)
4220 {
4221 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4222 struct ieee80211_vif *disabled_vif = NULL;
4223
4224 lockdep_assert_held(&mvm->mutex);
4225
4226 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
4227
4228 switch (vif->type) {
4229 case NL80211_IFTYPE_ADHOC:
4230 goto out;
4231 case NL80211_IFTYPE_MONITOR:
4232 mvmvif->monitor_active = false;
4233 mvmvif->ps_disabled = false;
4234 iwl_mvm_rm_snif_sta(mvm, vif);
4235 break;
4236 case NL80211_IFTYPE_AP:
4237 /* This part is triggered only during CSA */
4238 if (!switching_chanctx || !mvmvif->ap_ibss_active)
4239 goto out;
4240
4241 mvmvif->csa_countdown = false;
4242
4243 /* Set CS bit on all the stations */
4244 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
4245
4246 /* Save blocked iface, the timeout is set on the next beacon */
4247 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
4248
4249 mvmvif->ap_ibss_active = false;
4250 break;
4251 case NL80211_IFTYPE_STATION:
4252 if (!switching_chanctx)
4253 break;
4254
4255 disabled_vif = vif;
4256
4257 if (!fw_has_capa(&mvm->fw->ucode_capa,
4258 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
4259 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
4260 break;
4261 default:
4262 break;
4263 }
4264
4265 iwl_mvm_update_quotas(mvm, false, disabled_vif);
4266 iwl_mvm_binding_remove_vif(mvm, vif);
4267
4268 out:
4269 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD) &&
4270 switching_chanctx)
4271 return;
4272 mvmvif->phy_ctxt = NULL;
4273 iwl_mvm_power_update_mac(mvm);
4274 }
4275
iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx)4276 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
4277 struct ieee80211_vif *vif,
4278 struct ieee80211_chanctx_conf *ctx)
4279 {
4280 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4281
4282 mutex_lock(&mvm->mutex);
4283 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
4284 mutex_unlock(&mvm->mutex);
4285 }
4286
4287 static int
iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm * mvm,struct ieee80211_vif_chanctx_switch * vifs)4288 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
4289 struct ieee80211_vif_chanctx_switch *vifs)
4290 {
4291 int ret;
4292
4293 mutex_lock(&mvm->mutex);
4294 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
4295 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
4296
4297 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
4298 if (ret) {
4299 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
4300 goto out_reassign;
4301 }
4302
4303 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
4304 true);
4305 if (ret) {
4306 IWL_ERR(mvm,
4307 "failed to assign new_ctx during channel switch\n");
4308 goto out_remove;
4309 }
4310
4311 /* we don't support TDLS during DCM - can be caused by channel switch */
4312 if (iwl_mvm_phy_ctx_count(mvm) > 1)
4313 iwl_mvm_teardown_tdls_peers(mvm);
4314
4315 goto out;
4316
4317 out_remove:
4318 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
4319
4320 out_reassign:
4321 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
4322 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
4323 goto out_restart;
4324 }
4325
4326 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
4327 true)) {
4328 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
4329 goto out_restart;
4330 }
4331
4332 goto out;
4333
4334 out_restart:
4335 /* things keep failing, better restart the hw */
4336 iwl_mvm_nic_restart(mvm, false);
4337
4338 out:
4339 mutex_unlock(&mvm->mutex);
4340
4341 return ret;
4342 }
4343
4344 static int
iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm * mvm,struct ieee80211_vif_chanctx_switch * vifs)4345 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
4346 struct ieee80211_vif_chanctx_switch *vifs)
4347 {
4348 int ret;
4349
4350 mutex_lock(&mvm->mutex);
4351 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
4352
4353 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
4354 true);
4355 if (ret) {
4356 IWL_ERR(mvm,
4357 "failed to assign new_ctx during channel switch\n");
4358 goto out_reassign;
4359 }
4360
4361 goto out;
4362
4363 out_reassign:
4364 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
4365 true)) {
4366 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
4367 goto out_restart;
4368 }
4369
4370 goto out;
4371
4372 out_restart:
4373 /* things keep failing, better restart the hw */
4374 iwl_mvm_nic_restart(mvm, false);
4375
4376 out:
4377 mutex_unlock(&mvm->mutex);
4378
4379 return ret;
4380 }
4381
iwl_mvm_switch_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif_chanctx_switch * vifs,int n_vifs,enum ieee80211_chanctx_switch_mode mode)4382 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
4383 struct ieee80211_vif_chanctx_switch *vifs,
4384 int n_vifs,
4385 enum ieee80211_chanctx_switch_mode mode)
4386 {
4387 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4388 int ret;
4389
4390 /* we only support a single-vif right now */
4391 if (n_vifs > 1)
4392 return -EOPNOTSUPP;
4393
4394 switch (mode) {
4395 case CHANCTX_SWMODE_SWAP_CONTEXTS:
4396 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
4397 break;
4398 case CHANCTX_SWMODE_REASSIGN_VIF:
4399 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
4400 break;
4401 default:
4402 ret = -EOPNOTSUPP;
4403 break;
4404 }
4405
4406 return ret;
4407 }
4408
iwl_mvm_tx_last_beacon(struct ieee80211_hw * hw)4409 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
4410 {
4411 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4412
4413 return mvm->ibss_manager;
4414 }
4415
iwl_mvm_set_tim(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool set)4416 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
4417 struct ieee80211_sta *sta,
4418 bool set)
4419 {
4420 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4421 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4422
4423 if (!mvm_sta || !mvm_sta->vif) {
4424 IWL_ERR(mvm, "Station is not associated to a vif\n");
4425 return -EINVAL;
4426 }
4427
4428 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
4429 }
4430
4431 #ifdef CONFIG_NL80211_TESTMODE
4432 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
4433 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
4434 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
4435 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
4436 };
4437
__iwl_mvm_mac_testmode_cmd(struct iwl_mvm * mvm,struct ieee80211_vif * vif,void * data,int len)4438 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
4439 struct ieee80211_vif *vif,
4440 void *data, int len)
4441 {
4442 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
4443 int err;
4444 u32 noa_duration;
4445
4446 err = nla_parse_deprecated(tb, IWL_MVM_TM_ATTR_MAX, data, len,
4447 iwl_mvm_tm_policy, NULL);
4448 if (err)
4449 return err;
4450
4451 if (!tb[IWL_MVM_TM_ATTR_CMD])
4452 return -EINVAL;
4453
4454 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
4455 case IWL_MVM_TM_CMD_SET_NOA:
4456 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
4457 !vif->bss_conf.enable_beacon ||
4458 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
4459 return -EINVAL;
4460
4461 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
4462 if (noa_duration >= vif->bss_conf.beacon_int)
4463 return -EINVAL;
4464
4465 mvm->noa_duration = noa_duration;
4466 mvm->noa_vif = vif;
4467
4468 return iwl_mvm_update_quotas(mvm, true, NULL);
4469 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
4470 /* must be associated client vif - ignore authorized */
4471 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
4472 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
4473 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
4474 return -EINVAL;
4475
4476 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
4477 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
4478 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4479 }
4480
4481 return -EOPNOTSUPP;
4482 }
4483
iwl_mvm_mac_testmode_cmd(struct ieee80211_hw * hw,struct ieee80211_vif * vif,void * data,int len)4484 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
4485 struct ieee80211_vif *vif,
4486 void *data, int len)
4487 {
4488 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4489 int err;
4490
4491 mutex_lock(&mvm->mutex);
4492 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
4493 mutex_unlock(&mvm->mutex);
4494
4495 return err;
4496 }
4497 #endif
4498
iwl_mvm_channel_switch(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)4499 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
4500 struct ieee80211_vif *vif,
4501 struct ieee80211_channel_switch *chsw)
4502 {
4503 /* By implementing this operation, we prevent mac80211 from
4504 * starting its own channel switch timer, so that we can call
4505 * ieee80211_chswitch_done() ourselves at the right time
4506 * (which is when the absence time event starts).
4507 */
4508
4509 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
4510 "dummy channel switch op\n");
4511 }
4512
iwl_mvm_schedule_client_csa(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)4513 static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm,
4514 struct ieee80211_vif *vif,
4515 struct ieee80211_channel_switch *chsw)
4516 {
4517 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4518 struct iwl_chan_switch_te_cmd cmd = {
4519 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
4520 mvmvif->color)),
4521 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
4522 .tsf = cpu_to_le32(chsw->timestamp),
4523 .cs_count = chsw->count,
4524 .cs_mode = chsw->block_tx,
4525 };
4526
4527 lockdep_assert_held(&mvm->mutex);
4528
4529 if (chsw->delay)
4530 cmd.cs_delayed_bcn_count =
4531 DIV_ROUND_UP(chsw->delay, vif->bss_conf.beacon_int);
4532
4533 return iwl_mvm_send_cmd_pdu(mvm,
4534 WIDE_ID(MAC_CONF_GROUP,
4535 CHANNEL_SWITCH_TIME_EVENT_CMD),
4536 0, sizeof(cmd), &cmd);
4537 }
4538
iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)4539 static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm,
4540 struct ieee80211_vif *vif,
4541 struct ieee80211_channel_switch *chsw)
4542 {
4543 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4544 u32 apply_time;
4545
4546 /* Schedule the time event to a bit before beacon 1,
4547 * to make sure we're in the new channel when the
4548 * GO/AP arrives. In case count <= 1 immediately schedule the
4549 * TE (this might result with some packet loss or connection
4550 * loss).
4551 */
4552 if (chsw->count <= 1)
4553 apply_time = 0;
4554 else
4555 apply_time = chsw->device_timestamp +
4556 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
4557 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
4558
4559 if (chsw->block_tx)
4560 iwl_mvm_csa_client_absent(mvm, vif);
4561
4562 if (mvmvif->bf_data.bf_enabled) {
4563 int ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4564
4565 if (ret)
4566 return ret;
4567 }
4568
4569 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
4570 apply_time);
4571
4572 return 0;
4573 }
4574
4575 #define IWL_MAX_CSA_BLOCK_TX 1500
iwl_mvm_pre_channel_switch(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)4576 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
4577 struct ieee80211_vif *vif,
4578 struct ieee80211_channel_switch *chsw)
4579 {
4580 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4581 struct ieee80211_vif *csa_vif;
4582 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4583 int ret;
4584
4585 mutex_lock(&mvm->mutex);
4586
4587 mvmvif->csa_failed = false;
4588
4589 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
4590 chsw->chandef.center_freq1);
4591
4592 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt,
4593 ieee80211_vif_to_wdev(vif),
4594 FW_DBG_TRIGGER_CHANNEL_SWITCH);
4595
4596 switch (vif->type) {
4597 case NL80211_IFTYPE_AP:
4598 csa_vif =
4599 rcu_dereference_protected(mvm->csa_vif,
4600 lockdep_is_held(&mvm->mutex));
4601 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
4602 "Another CSA is already in progress")) {
4603 ret = -EBUSY;
4604 goto out_unlock;
4605 }
4606
4607 /* we still didn't unblock tx. prevent new CS meanwhile */
4608 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
4609 lockdep_is_held(&mvm->mutex))) {
4610 ret = -EBUSY;
4611 goto out_unlock;
4612 }
4613
4614 rcu_assign_pointer(mvm->csa_vif, vif);
4615
4616 if (WARN_ONCE(mvmvif->csa_countdown,
4617 "Previous CSA countdown didn't complete")) {
4618 ret = -EBUSY;
4619 goto out_unlock;
4620 }
4621
4622 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
4623
4624 break;
4625 case NL80211_IFTYPE_STATION:
4626 if (chsw->block_tx) {
4627 /*
4628 * In case of undetermined / long time with immediate
4629 * quiet monitor status to gracefully disconnect
4630 */
4631 if (!chsw->count ||
4632 chsw->count * vif->bss_conf.beacon_int >
4633 IWL_MAX_CSA_BLOCK_TX)
4634 schedule_delayed_work(&mvmvif->csa_work,
4635 msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX));
4636 }
4637
4638 if (!fw_has_capa(&mvm->fw->ucode_capa,
4639 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
4640 ret = iwl_mvm_old_pre_chan_sw_sta(mvm, vif, chsw);
4641 if (ret)
4642 goto out_unlock;
4643 } else {
4644 iwl_mvm_schedule_client_csa(mvm, vif, chsw);
4645 }
4646
4647 mvmvif->csa_count = chsw->count;
4648 mvmvif->csa_misbehave = false;
4649 break;
4650 default:
4651 break;
4652 }
4653
4654 mvmvif->ps_disabled = true;
4655
4656 ret = iwl_mvm_power_update_ps(mvm);
4657 if (ret)
4658 goto out_unlock;
4659
4660 /* we won't be on this channel any longer */
4661 iwl_mvm_teardown_tdls_peers(mvm);
4662
4663 out_unlock:
4664 mutex_unlock(&mvm->mutex);
4665
4666 return ret;
4667 }
4668
iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)4669 static void iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw *hw,
4670 struct ieee80211_vif *vif,
4671 struct ieee80211_channel_switch *chsw)
4672 {
4673 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4674 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4675 struct iwl_chan_switch_te_cmd cmd = {
4676 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
4677 mvmvif->color)),
4678 .action = cpu_to_le32(FW_CTXT_ACTION_MODIFY),
4679 .tsf = cpu_to_le32(chsw->timestamp),
4680 .cs_count = chsw->count,
4681 .cs_mode = chsw->block_tx,
4682 };
4683
4684 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CS_MODIFY))
4685 return;
4686
4687 if (chsw->count >= mvmvif->csa_count && chsw->block_tx) {
4688 if (mvmvif->csa_misbehave) {
4689 /* Second time, give up on this AP*/
4690 iwl_mvm_abort_channel_switch(hw, vif);
4691 ieee80211_chswitch_done(vif, false);
4692 mvmvif->csa_misbehave = false;
4693 return;
4694 }
4695 mvmvif->csa_misbehave = true;
4696 }
4697 mvmvif->csa_count = chsw->count;
4698
4699 IWL_DEBUG_MAC80211(mvm, "Modify CSA on mac %d\n", mvmvif->id);
4700
4701 WARN_ON(iwl_mvm_send_cmd_pdu(mvm,
4702 WIDE_ID(MAC_CONF_GROUP,
4703 CHANNEL_SWITCH_TIME_EVENT_CMD),
4704 CMD_ASYNC, sizeof(cmd), &cmd));
4705 }
4706
iwl_mvm_flush_no_vif(struct iwl_mvm * mvm,u32 queues,bool drop)4707 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
4708 {
4709 int i;
4710
4711 if (!iwl_mvm_has_new_tx_api(mvm)) {
4712 if (drop) {
4713 mutex_lock(&mvm->mutex);
4714 iwl_mvm_flush_tx_path(mvm,
4715 iwl_mvm_flushable_queues(mvm) & queues, 0);
4716 mutex_unlock(&mvm->mutex);
4717 } else {
4718 iwl_trans_wait_tx_queues_empty(mvm->trans, queues);
4719 }
4720 return;
4721 }
4722
4723 mutex_lock(&mvm->mutex);
4724 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
4725 struct ieee80211_sta *sta;
4726
4727 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4728 lockdep_is_held(&mvm->mutex));
4729 if (IS_ERR_OR_NULL(sta))
4730 continue;
4731
4732 if (drop)
4733 iwl_mvm_flush_sta_tids(mvm, i, 0xFFFF, 0);
4734 else
4735 iwl_mvm_wait_sta_queues_empty(mvm,
4736 iwl_mvm_sta_from_mac80211(sta));
4737 }
4738 mutex_unlock(&mvm->mutex);
4739 }
4740
iwl_mvm_mac_flush(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 queues,bool drop)4741 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
4742 struct ieee80211_vif *vif, u32 queues, bool drop)
4743 {
4744 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4745 struct iwl_mvm_vif *mvmvif;
4746 struct iwl_mvm_sta *mvmsta;
4747 struct ieee80211_sta *sta;
4748 int i;
4749 u32 msk = 0;
4750
4751 if (!vif) {
4752 iwl_mvm_flush_no_vif(mvm, queues, drop);
4753 return;
4754 }
4755
4756 if (vif->type != NL80211_IFTYPE_STATION)
4757 return;
4758
4759 /* Make sure we're done with the deferred traffic before flushing */
4760 flush_work(&mvm->add_stream_wk);
4761
4762 mutex_lock(&mvm->mutex);
4763 mvmvif = iwl_mvm_vif_from_mac80211(vif);
4764
4765 /* flush the AP-station and all TDLS peers */
4766 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
4767 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4768 lockdep_is_held(&mvm->mutex));
4769 if (IS_ERR_OR_NULL(sta))
4770 continue;
4771
4772 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4773 if (mvmsta->vif != vif)
4774 continue;
4775
4776 /* make sure only TDLS peers or the AP are flushed */
4777 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4778
4779 if (drop) {
4780 if (iwl_mvm_flush_sta(mvm, mvmsta, false))
4781 IWL_ERR(mvm, "flush request fail\n");
4782 } else {
4783 msk |= mvmsta->tfd_queue_msk;
4784 if (iwl_mvm_has_new_tx_api(mvm))
4785 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4786 }
4787 }
4788
4789 mutex_unlock(&mvm->mutex);
4790
4791 /* this can take a while, and we may need/want other operations
4792 * to succeed while doing this, so do it without the mutex held
4793 */
4794 if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4795 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4796 }
4797
iwl_mvm_mac_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)4798 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4799 struct survey_info *survey)
4800 {
4801 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4802 int ret;
4803
4804 memset(survey, 0, sizeof(*survey));
4805
4806 /* only support global statistics right now */
4807 if (idx != 0)
4808 return -ENOENT;
4809
4810 if (!fw_has_capa(&mvm->fw->ucode_capa,
4811 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4812 return -ENOENT;
4813
4814 mutex_lock(&mvm->mutex);
4815
4816 if (iwl_mvm_firmware_running(mvm)) {
4817 ret = iwl_mvm_request_statistics(mvm, false);
4818 if (ret)
4819 goto out;
4820 }
4821
4822 survey->filled = SURVEY_INFO_TIME |
4823 SURVEY_INFO_TIME_RX |
4824 SURVEY_INFO_TIME_TX |
4825 SURVEY_INFO_TIME_SCAN;
4826 survey->time = mvm->accu_radio_stats.on_time_rf +
4827 mvm->radio_stats.on_time_rf;
4828 do_div(survey->time, USEC_PER_MSEC);
4829
4830 survey->time_rx = mvm->accu_radio_stats.rx_time +
4831 mvm->radio_stats.rx_time;
4832 do_div(survey->time_rx, USEC_PER_MSEC);
4833
4834 survey->time_tx = mvm->accu_radio_stats.tx_time +
4835 mvm->radio_stats.tx_time;
4836 do_div(survey->time_tx, USEC_PER_MSEC);
4837
4838 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4839 mvm->radio_stats.on_time_scan;
4840 do_div(survey->time_scan, USEC_PER_MSEC);
4841
4842 ret = 0;
4843 out:
4844 mutex_unlock(&mvm->mutex);
4845 return ret;
4846 }
4847
iwl_mvm_set_sta_rate(u32 rate_n_flags,struct rate_info * rinfo)4848 static void iwl_mvm_set_sta_rate(u32 rate_n_flags, struct rate_info *rinfo)
4849 {
4850 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
4851 case RATE_MCS_CHAN_WIDTH_20:
4852 rinfo->bw = RATE_INFO_BW_20;
4853 break;
4854 case RATE_MCS_CHAN_WIDTH_40:
4855 rinfo->bw = RATE_INFO_BW_40;
4856 break;
4857 case RATE_MCS_CHAN_WIDTH_80:
4858 rinfo->bw = RATE_INFO_BW_80;
4859 break;
4860 case RATE_MCS_CHAN_WIDTH_160:
4861 rinfo->bw = RATE_INFO_BW_160;
4862 break;
4863 }
4864
4865 if (rate_n_flags & RATE_MCS_HT_MSK) {
4866 rinfo->flags |= RATE_INFO_FLAGS_MCS;
4867 rinfo->mcs = u32_get_bits(rate_n_flags, RATE_HT_MCS_INDEX_MSK);
4868 rinfo->nss = u32_get_bits(rate_n_flags,
4869 RATE_HT_MCS_NSS_MSK) + 1;
4870 if (rate_n_flags & RATE_MCS_SGI_MSK)
4871 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
4872 } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
4873 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
4874 rinfo->mcs = u32_get_bits(rate_n_flags,
4875 RATE_VHT_MCS_RATE_CODE_MSK);
4876 rinfo->nss = u32_get_bits(rate_n_flags,
4877 RATE_VHT_MCS_NSS_MSK) + 1;
4878 if (rate_n_flags & RATE_MCS_SGI_MSK)
4879 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
4880 } else if (rate_n_flags & RATE_MCS_HE_MSK) {
4881 u32 gi_ltf = u32_get_bits(rate_n_flags,
4882 RATE_MCS_HE_GI_LTF_MSK);
4883
4884 rinfo->flags |= RATE_INFO_FLAGS_HE_MCS;
4885 rinfo->mcs = u32_get_bits(rate_n_flags,
4886 RATE_VHT_MCS_RATE_CODE_MSK);
4887 rinfo->nss = u32_get_bits(rate_n_flags,
4888 RATE_VHT_MCS_NSS_MSK) + 1;
4889
4890 if (rate_n_flags & RATE_MCS_HE_106T_MSK) {
4891 rinfo->bw = RATE_INFO_BW_HE_RU;
4892 rinfo->he_ru_alloc = NL80211_RATE_INFO_HE_RU_ALLOC_106;
4893 }
4894
4895 switch (rate_n_flags & RATE_MCS_HE_TYPE_MSK) {
4896 case RATE_MCS_HE_TYPE_SU:
4897 case RATE_MCS_HE_TYPE_EXT_SU:
4898 if (gi_ltf == 0 || gi_ltf == 1)
4899 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
4900 else if (gi_ltf == 2)
4901 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
4902 else if (rate_n_flags & RATE_MCS_SGI_MSK)
4903 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
4904 else
4905 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
4906 break;
4907 case RATE_MCS_HE_TYPE_MU:
4908 if (gi_ltf == 0 || gi_ltf == 1)
4909 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
4910 else if (gi_ltf == 2)
4911 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
4912 else
4913 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
4914 break;
4915 case RATE_MCS_HE_TYPE_TRIG:
4916 if (gi_ltf == 0 || gi_ltf == 1)
4917 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
4918 else
4919 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
4920 break;
4921 }
4922
4923 if (rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK)
4924 rinfo->he_dcm = 1;
4925 } else {
4926 switch (u32_get_bits(rate_n_flags, RATE_LEGACY_RATE_MSK)) {
4927 case IWL_RATE_1M_PLCP:
4928 rinfo->legacy = 10;
4929 break;
4930 case IWL_RATE_2M_PLCP:
4931 rinfo->legacy = 20;
4932 break;
4933 case IWL_RATE_5M_PLCP:
4934 rinfo->legacy = 55;
4935 break;
4936 case IWL_RATE_11M_PLCP:
4937 rinfo->legacy = 110;
4938 break;
4939 case IWL_RATE_6M_PLCP:
4940 rinfo->legacy = 60;
4941 break;
4942 case IWL_RATE_9M_PLCP:
4943 rinfo->legacy = 90;
4944 break;
4945 case IWL_RATE_12M_PLCP:
4946 rinfo->legacy = 120;
4947 break;
4948 case IWL_RATE_18M_PLCP:
4949 rinfo->legacy = 180;
4950 break;
4951 case IWL_RATE_24M_PLCP:
4952 rinfo->legacy = 240;
4953 break;
4954 case IWL_RATE_36M_PLCP:
4955 rinfo->legacy = 360;
4956 break;
4957 case IWL_RATE_48M_PLCP:
4958 rinfo->legacy = 480;
4959 break;
4960 case IWL_RATE_54M_PLCP:
4961 rinfo->legacy = 540;
4962 break;
4963 }
4964 }
4965 }
4966
iwl_mvm_mac_sta_statistics(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct station_info * sinfo)4967 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4968 struct ieee80211_vif *vif,
4969 struct ieee80211_sta *sta,
4970 struct station_info *sinfo)
4971 {
4972 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4973 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4974 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4975
4976 if (mvmsta->avg_energy) {
4977 sinfo->signal_avg = -(s8)mvmsta->avg_energy;
4978 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG);
4979 }
4980
4981 if (iwl_mvm_has_tlc_offload(mvm)) {
4982 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
4983
4984 iwl_mvm_set_sta_rate(lq_sta->last_rate_n_flags, &sinfo->txrate);
4985 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
4986 }
4987
4988 /* if beacon filtering isn't on mac80211 does it anyway */
4989 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4990 return;
4991
4992 if (!vif->bss_conf.assoc)
4993 return;
4994
4995 mutex_lock(&mvm->mutex);
4996
4997 if (mvmvif->ap_sta_id != mvmsta->sta_id)
4998 goto unlock;
4999
5000 if (iwl_mvm_request_statistics(mvm, false))
5001 goto unlock;
5002
5003 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
5004 mvmvif->beacon_stats.accu_num_beacons;
5005 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX);
5006 if (mvmvif->beacon_stats.avg_signal) {
5007 /* firmware only reports a value after RXing a few beacons */
5008 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
5009 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
5010 }
5011 unlock:
5012 mutex_unlock(&mvm->mutex);
5013 }
5014
iwl_mvm_event_mlme_callback(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const struct ieee80211_event * event)5015 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
5016 struct ieee80211_vif *vif,
5017 const struct ieee80211_event *event)
5018 {
5019 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \
5020 do { \
5021 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \
5022 break; \
5023 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \
5024 } while (0)
5025
5026 struct iwl_fw_dbg_trigger_tlv *trig;
5027 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
5028
5029 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
5030 FW_DBG_TRIGGER_MLME);
5031 if (!trig)
5032 return;
5033
5034 trig_mlme = (void *)trig->data;
5035
5036 if (event->u.mlme.data == ASSOC_EVENT) {
5037 if (event->u.mlme.status == MLME_DENIED)
5038 CHECK_MLME_TRIGGER(stop_assoc_denied,
5039 "DENIED ASSOC: reason %d",
5040 event->u.mlme.reason);
5041 else if (event->u.mlme.status == MLME_TIMEOUT)
5042 CHECK_MLME_TRIGGER(stop_assoc_timeout,
5043 "ASSOC TIMEOUT");
5044 } else if (event->u.mlme.data == AUTH_EVENT) {
5045 if (event->u.mlme.status == MLME_DENIED)
5046 CHECK_MLME_TRIGGER(stop_auth_denied,
5047 "DENIED AUTH: reason %d",
5048 event->u.mlme.reason);
5049 else if (event->u.mlme.status == MLME_TIMEOUT)
5050 CHECK_MLME_TRIGGER(stop_auth_timeout,
5051 "AUTH TIMEOUT");
5052 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
5053 CHECK_MLME_TRIGGER(stop_rx_deauth,
5054 "DEAUTH RX %d", event->u.mlme.reason);
5055 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
5056 CHECK_MLME_TRIGGER(stop_tx_deauth,
5057 "DEAUTH TX %d", event->u.mlme.reason);
5058 }
5059 #undef CHECK_MLME_TRIGGER
5060 }
5061
iwl_mvm_event_bar_rx_callback(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const struct ieee80211_event * event)5062 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
5063 struct ieee80211_vif *vif,
5064 const struct ieee80211_event *event)
5065 {
5066 struct iwl_fw_dbg_trigger_tlv *trig;
5067 struct iwl_fw_dbg_trigger_ba *ba_trig;
5068
5069 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
5070 FW_DBG_TRIGGER_BA);
5071 if (!trig)
5072 return;
5073
5074 ba_trig = (void *)trig->data;
5075
5076 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
5077 return;
5078
5079 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
5080 "BAR received from %pM, tid %d, ssn %d",
5081 event->u.ba.sta->addr, event->u.ba.tid,
5082 event->u.ba.ssn);
5083 }
5084
iwl_mvm_mac_event_callback(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const struct ieee80211_event * event)5085 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
5086 struct ieee80211_vif *vif,
5087 const struct ieee80211_event *event)
5088 {
5089 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5090
5091 switch (event->type) {
5092 case MLME_EVENT:
5093 iwl_mvm_event_mlme_callback(mvm, vif, event);
5094 break;
5095 case BAR_RX_EVENT:
5096 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
5097 break;
5098 case BA_FRAME_TIMEOUT:
5099 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta,
5100 event->u.ba.tid);
5101 break;
5102 default:
5103 break;
5104 }
5105 }
5106
iwl_mvm_sync_rx_queues_internal(struct iwl_mvm * mvm,struct iwl_mvm_internal_rxq_notif * notif,u32 size)5107 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
5108 struct iwl_mvm_internal_rxq_notif *notif,
5109 u32 size)
5110 {
5111 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
5112 int ret;
5113
5114
5115 if (!iwl_mvm_has_new_rx_api(mvm))
5116 return;
5117
5118 if (notif->sync) {
5119 notif->cookie = mvm->queue_sync_cookie;
5120 atomic_set(&mvm->queue_sync_counter,
5121 mvm->trans->num_rx_queues);
5122 }
5123
5124 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif,
5125 size, !notif->sync);
5126 if (ret) {
5127 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
5128 goto out;
5129 }
5130
5131 if (notif->sync) {
5132 lockdep_assert_held(&mvm->mutex);
5133 ret = wait_event_timeout(mvm->rx_sync_waitq,
5134 atomic_read(&mvm->queue_sync_counter) == 0 ||
5135 iwl_mvm_is_radio_killed(mvm),
5136 HZ);
5137 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
5138 }
5139
5140 out:
5141 atomic_set(&mvm->queue_sync_counter, 0);
5142 if (notif->sync)
5143 mvm->queue_sync_cookie++;
5144 }
5145
iwl_mvm_sync_rx_queues(struct ieee80211_hw * hw)5146 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
5147 {
5148 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5149 struct iwl_mvm_internal_rxq_notif data = {
5150 .type = IWL_MVM_RXQ_EMPTY,
5151 .sync = 1,
5152 };
5153
5154 mutex_lock(&mvm->mutex);
5155 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
5156 mutex_unlock(&mvm->mutex);
5157 }
5158
5159 static int
iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_ftm_responder_stats * stats)5160 iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw *hw,
5161 struct ieee80211_vif *vif,
5162 struct cfg80211_ftm_responder_stats *stats)
5163 {
5164 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5165 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
5166
5167 if (vif->p2p || vif->type != NL80211_IFTYPE_AP ||
5168 !mvmvif->ap_ibss_active || !vif->bss_conf.ftm_responder)
5169 return -EINVAL;
5170
5171 mutex_lock(&mvm->mutex);
5172 *stats = mvm->ftm_resp_stats;
5173 mutex_unlock(&mvm->mutex);
5174
5175 stats->filled = BIT(NL80211_FTM_STATS_SUCCESS_NUM) |
5176 BIT(NL80211_FTM_STATS_PARTIAL_NUM) |
5177 BIT(NL80211_FTM_STATS_FAILED_NUM) |
5178 BIT(NL80211_FTM_STATS_ASAP_NUM) |
5179 BIT(NL80211_FTM_STATS_NON_ASAP_NUM) |
5180 BIT(NL80211_FTM_STATS_TOTAL_DURATION_MSEC) |
5181 BIT(NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM) |
5182 BIT(NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM) |
5183 BIT(NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM);
5184
5185 return 0;
5186 }
5187
iwl_mvm_start_pmsr(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_pmsr_request * request)5188 static int iwl_mvm_start_pmsr(struct ieee80211_hw *hw,
5189 struct ieee80211_vif *vif,
5190 struct cfg80211_pmsr_request *request)
5191 {
5192 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5193 int ret;
5194
5195 mutex_lock(&mvm->mutex);
5196 ret = iwl_mvm_ftm_start(mvm, vif, request);
5197 mutex_unlock(&mvm->mutex);
5198
5199 return ret;
5200 }
5201
iwl_mvm_abort_pmsr(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_pmsr_request * request)5202 static void iwl_mvm_abort_pmsr(struct ieee80211_hw *hw,
5203 struct ieee80211_vif *vif,
5204 struct cfg80211_pmsr_request *request)
5205 {
5206 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5207
5208 mutex_lock(&mvm->mutex);
5209 iwl_mvm_ftm_abort(mvm, request);
5210 mutex_unlock(&mvm->mutex);
5211 }
5212
iwl_mvm_can_hw_csum(struct sk_buff * skb)5213 static bool iwl_mvm_can_hw_csum(struct sk_buff *skb)
5214 {
5215 u8 protocol = ip_hdr(skb)->protocol;
5216
5217 if (!IS_ENABLED(CONFIG_INET))
5218 return false;
5219
5220 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP;
5221 }
5222
iwl_mvm_mac_can_aggregate(struct ieee80211_hw * hw,struct sk_buff * head,struct sk_buff * skb)5223 static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw,
5224 struct sk_buff *head,
5225 struct sk_buff *skb)
5226 {
5227 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5228
5229 /* For now don't aggregate IPv6 in AMSDU */
5230 if (skb->protocol != htons(ETH_P_IP))
5231 return false;
5232
5233 if (!iwl_mvm_is_csum_supported(mvm))
5234 return true;
5235
5236 return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head);
5237 }
5238
5239 const struct ieee80211_ops iwl_mvm_hw_ops = {
5240 .tx = iwl_mvm_mac_tx,
5241 .wake_tx_queue = iwl_mvm_mac_wake_tx_queue,
5242 .ampdu_action = iwl_mvm_mac_ampdu_action,
5243 .get_antenna = iwl_mvm_op_get_antenna,
5244 .start = iwl_mvm_mac_start,
5245 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
5246 .stop = iwl_mvm_mac_stop,
5247 .add_interface = iwl_mvm_mac_add_interface,
5248 .remove_interface = iwl_mvm_mac_remove_interface,
5249 .config = iwl_mvm_mac_config,
5250 .prepare_multicast = iwl_mvm_prepare_multicast,
5251 .configure_filter = iwl_mvm_configure_filter,
5252 .config_iface_filter = iwl_mvm_config_iface_filter,
5253 .bss_info_changed = iwl_mvm_bss_info_changed,
5254 .hw_scan = iwl_mvm_mac_hw_scan,
5255 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
5256 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
5257 .sta_state = iwl_mvm_mac_sta_state,
5258 .sta_notify = iwl_mvm_mac_sta_notify,
5259 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
5260 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
5261 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
5262 .sta_rc_update = iwl_mvm_sta_rc_update,
5263 .conf_tx = iwl_mvm_mac_conf_tx,
5264 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
5265 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
5266 .flush = iwl_mvm_mac_flush,
5267 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
5268 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
5269 .set_key = iwl_mvm_mac_set_key,
5270 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
5271 .remain_on_channel = iwl_mvm_roc,
5272 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
5273 .add_chanctx = iwl_mvm_add_chanctx,
5274 .remove_chanctx = iwl_mvm_remove_chanctx,
5275 .change_chanctx = iwl_mvm_change_chanctx,
5276 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
5277 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
5278 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
5279
5280 .start_ap = iwl_mvm_start_ap_ibss,
5281 .stop_ap = iwl_mvm_stop_ap_ibss,
5282 .join_ibss = iwl_mvm_start_ap_ibss,
5283 .leave_ibss = iwl_mvm_stop_ap_ibss,
5284
5285 .tx_last_beacon = iwl_mvm_tx_last_beacon,
5286
5287 .set_tim = iwl_mvm_set_tim,
5288
5289 .channel_switch = iwl_mvm_channel_switch,
5290 .pre_channel_switch = iwl_mvm_pre_channel_switch,
5291 .post_channel_switch = iwl_mvm_post_channel_switch,
5292 .abort_channel_switch = iwl_mvm_abort_channel_switch,
5293 .channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon,
5294
5295 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
5296 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
5297 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
5298
5299 .event_callback = iwl_mvm_mac_event_callback,
5300
5301 .sync_rx_queues = iwl_mvm_sync_rx_queues,
5302
5303 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
5304
5305 #ifdef CONFIG_PM_SLEEP
5306 /* look at d3.c */
5307 .suspend = iwl_mvm_suspend,
5308 .resume = iwl_mvm_resume,
5309 .set_wakeup = iwl_mvm_set_wakeup,
5310 .set_rekey_data = iwl_mvm_set_rekey_data,
5311 #if IS_ENABLED(CONFIG_IPV6)
5312 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
5313 #endif
5314 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
5315 #endif
5316 .get_survey = iwl_mvm_mac_get_survey,
5317 .sta_statistics = iwl_mvm_mac_sta_statistics,
5318 .get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats,
5319 .start_pmsr = iwl_mvm_start_pmsr,
5320 .abort_pmsr = iwl_mvm_abort_pmsr,
5321
5322 .can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate,
5323 #ifdef CONFIG_IWLWIFI_DEBUGFS
5324 .sta_add_debugfs = iwl_mvm_sta_add_debugfs,
5325 #endif
5326 };
5327