1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2022 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
6 */
7 #include <linux/kernel.h>
8 #include <linux/slab.h>
9 #include <linux/skbuff.h>
10 #include <linux/netdevice.h>
11 #include <linux/etherdevice.h>
12 #include <linux/ip.h>
13 #include <linux/if_arp.h>
14 #include <linux/time.h>
15 #include <net/mac80211.h>
16 #include <net/ieee80211_radiotap.h>
17 #include <net/tcp.h>
18
19 #include "iwl-drv.h"
20 #include "iwl-op-mode.h"
21 #include "iwl-io.h"
22 #include "mvm.h"
23 #include "sta.h"
24 #include "time-event.h"
25 #include "iwl-eeprom-parse.h"
26 #include "iwl-phy-db.h"
27 #include "testmode.h"
28 #include "fw/error-dump.h"
29 #include "iwl-prph.h"
30 #include "iwl-nvm-parse.h"
31
32 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
33 {
34 .max = 1,
35 .types = BIT(NL80211_IFTYPE_STATION),
36 },
37 {
38 .max = 1,
39 .types = BIT(NL80211_IFTYPE_AP) |
40 BIT(NL80211_IFTYPE_P2P_CLIENT) |
41 BIT(NL80211_IFTYPE_P2P_GO),
42 },
43 {
44 .max = 1,
45 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
46 },
47 };
48
49 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
50 {
51 .num_different_channels = 2,
52 .max_interfaces = 3,
53 .limits = iwl_mvm_limits,
54 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
55 },
56 };
57
58 static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = {
59 .max_peers = IWL_MVM_TOF_MAX_APS,
60 .report_ap_tsf = 1,
61 .randomize_mac_addr = 1,
62
63 .ftm = {
64 .supported = 1,
65 .asap = 1,
66 .non_asap = 1,
67 .request_lci = 1,
68 .request_civicloc = 1,
69 .trigger_based = 1,
70 .non_trigger_based = 1,
71 .max_bursts_exponent = -1, /* all supported */
72 .max_ftms_per_burst = 0, /* no limits */
73 .bandwidths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
74 BIT(NL80211_CHAN_WIDTH_20) |
75 BIT(NL80211_CHAN_WIDTH_40) |
76 BIT(NL80211_CHAN_WIDTH_80) |
77 BIT(NL80211_CHAN_WIDTH_160),
78 .preambles = BIT(NL80211_PREAMBLE_LEGACY) |
79 BIT(NL80211_PREAMBLE_HT) |
80 BIT(NL80211_PREAMBLE_VHT) |
81 BIT(NL80211_PREAMBLE_HE),
82 },
83 };
84
85 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
86 enum set_key_cmd cmd,
87 struct ieee80211_vif *vif,
88 struct ieee80211_sta *sta,
89 struct ieee80211_key_conf *key);
90
iwl_mvm_reset_phy_ctxts(struct iwl_mvm * mvm)91 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
92 {
93 int i;
94
95 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
96 for (i = 0; i < NUM_PHY_CTX; i++) {
97 mvm->phy_ctxts[i].id = i;
98 mvm->phy_ctxts[i].ref = 0;
99 }
100 }
101
iwl_mvm_get_regdomain(struct wiphy * wiphy,const char * alpha2,enum iwl_mcc_source src_id,bool * changed)102 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
103 const char *alpha2,
104 enum iwl_mcc_source src_id,
105 bool *changed)
106 {
107 struct ieee80211_regdomain *regd = NULL;
108 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
109 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
110 struct iwl_mcc_update_resp *resp;
111 u8 resp_ver;
112
113 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
114
115 lockdep_assert_held(&mvm->mutex);
116
117 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
118 if (IS_ERR_OR_NULL(resp)) {
119 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
120 PTR_ERR_OR_ZERO(resp));
121 resp = NULL;
122 goto out;
123 }
124
125 if (changed) {
126 u32 status = le32_to_cpu(resp->status);
127
128 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE ||
129 status == MCC_RESP_ILLEGAL);
130 }
131 resp_ver = iwl_fw_lookup_notif_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
132 MCC_UPDATE_CMD, 0);
133 IWL_DEBUG_LAR(mvm, "MCC update response version: %d\n", resp_ver);
134
135 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
136 __le32_to_cpu(resp->n_channels),
137 resp->channels,
138 __le16_to_cpu(resp->mcc),
139 __le16_to_cpu(resp->geo_info),
140 __le16_to_cpu(resp->cap), resp_ver);
141 /* Store the return source id */
142 src_id = resp->source_id;
143 if (IS_ERR_OR_NULL(regd)) {
144 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
145 PTR_ERR_OR_ZERO(regd));
146 goto out;
147 }
148
149 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
150 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
151 mvm->lar_regdom_set = true;
152 mvm->mcc_src = src_id;
153
154 iwl_mei_set_country_code(__le16_to_cpu(resp->mcc));
155
156 out:
157 kfree(resp);
158 return regd;
159 }
160
iwl_mvm_update_changed_regdom(struct iwl_mvm * mvm)161 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
162 {
163 bool changed;
164 struct ieee80211_regdomain *regd;
165
166 if (!iwl_mvm_is_lar_supported(mvm))
167 return;
168
169 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
170 if (!IS_ERR_OR_NULL(regd)) {
171 /* only update the regulatory core if changed */
172 if (changed)
173 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
174
175 kfree(regd);
176 }
177 }
178
iwl_mvm_get_current_regdomain(struct iwl_mvm * mvm,bool * changed)179 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
180 bool *changed)
181 {
182 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
183 iwl_mvm_is_wifi_mcc_supported(mvm) ?
184 MCC_SOURCE_GET_CURRENT :
185 MCC_SOURCE_OLD_FW, changed);
186 }
187
iwl_mvm_init_fw_regd(struct iwl_mvm * mvm)188 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
189 {
190 enum iwl_mcc_source used_src;
191 struct ieee80211_regdomain *regd;
192 int ret;
193 bool changed;
194 const struct ieee80211_regdomain *r =
195 wiphy_dereference(mvm->hw->wiphy, mvm->hw->wiphy->regd);
196
197 if (!r)
198 return -ENOENT;
199
200 /* save the last source in case we overwrite it below */
201 used_src = mvm->mcc_src;
202 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
203 /* Notify the firmware we support wifi location updates */
204 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
205 if (!IS_ERR_OR_NULL(regd))
206 kfree(regd);
207 }
208
209 /* Now set our last stored MCC and source */
210 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
211 &changed);
212 if (IS_ERR_OR_NULL(regd))
213 return -EIO;
214
215 /* update cfg80211 if the regdomain was changed */
216 if (changed)
217 ret = regulatory_set_wiphy_regd_sync(mvm->hw->wiphy, regd);
218 else
219 ret = 0;
220
221 kfree(regd);
222 return ret;
223 }
224
225 static const u8 he_if_types_ext_capa_sta[] = {
226 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING,
227 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT,
228 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF,
229 };
230
231 static const struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = {
232 {
233 .iftype = NL80211_IFTYPE_STATION,
234 .extended_capabilities = he_if_types_ext_capa_sta,
235 .extended_capabilities_mask = he_if_types_ext_capa_sta,
236 .extended_capabilities_len = sizeof(he_if_types_ext_capa_sta),
237 },
238 };
239
240 static int
iwl_mvm_op_get_antenna(struct ieee80211_hw * hw,u32 * tx_ant,u32 * rx_ant)241 iwl_mvm_op_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
242 {
243 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
244 *tx_ant = iwl_mvm_get_valid_tx_ant(mvm);
245 *rx_ant = iwl_mvm_get_valid_rx_ant(mvm);
246 return 0;
247 }
248
iwl_mvm_mac_setup_register(struct iwl_mvm * mvm)249 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
250 {
251 struct ieee80211_hw *hw = mvm->hw;
252 int num_mac, ret, i;
253 static const u32 mvm_ciphers[] = {
254 WLAN_CIPHER_SUITE_WEP40,
255 WLAN_CIPHER_SUITE_WEP104,
256 WLAN_CIPHER_SUITE_TKIP,
257 WLAN_CIPHER_SUITE_CCMP,
258 };
259 #ifdef CONFIG_PM_SLEEP
260 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
261 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
262 #endif
263
264 /* Tell mac80211 our characteristics */
265 ieee80211_hw_set(hw, SIGNAL_DBM);
266 ieee80211_hw_set(hw, SPECTRUM_MGMT);
267 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
268 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
269 ieee80211_hw_set(hw, SUPPORTS_PS);
270 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
271 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
272 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
273 ieee80211_hw_set(hw, CONNECTION_MONITOR);
274 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
275 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
276 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
277 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
278 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
279 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP);
280 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
281 ieee80211_hw_set(hw, BUFF_MMPDU_TXQ);
282 ieee80211_hw_set(hw, STA_MMPDU_TXQ);
283 /*
284 * On older devices, enabling TX A-MSDU occasionally leads to
285 * something getting messed up, the command read from the FIFO
286 * gets out of sync and isn't a TX command, so that we have an
287 * assert EDC.
288 *
289 * It's not clear where the bug is, but since we didn't used to
290 * support A-MSDU until moving the mac80211 iTXQs, just leave it
291 * for older devices. We also don't see this issue on any newer
292 * devices.
293 */
294 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000)
295 ieee80211_hw_set(hw, TX_AMSDU);
296 ieee80211_hw_set(hw, TX_FRAG_LIST);
297
298 if (iwl_mvm_has_tlc_offload(mvm)) {
299 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
300 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
301 }
302
303 if (iwl_mvm_has_new_rx_api(mvm))
304 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
305
306 if (fw_has_capa(&mvm->fw->ucode_capa,
307 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) {
308 ieee80211_hw_set(hw, AP_LINK_PS);
309 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) {
310 /*
311 * we absolutely need this for the new TX API since that comes
312 * with many more queues than the current code can deal with
313 * for station powersave
314 */
315 return -EINVAL;
316 }
317
318 if (mvm->trans->num_rx_queues > 1)
319 ieee80211_hw_set(hw, USES_RSS);
320
321 if (mvm->trans->max_skb_frags)
322 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
323
324 hw->queues = IEEE80211_NUM_ACS;
325 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
326 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
327 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
328 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
329 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
330
331 hw->radiotap_timestamp.units_pos =
332 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
333 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
334 /* this is the case for CCK frames, it's better (only 8) for OFDM */
335 hw->radiotap_timestamp.accuracy = 22;
336
337 if (!iwl_mvm_has_tlc_offload(mvm))
338 hw->rate_control_algorithm = RS_NAME;
339
340 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
341 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
342 hw->max_tx_fragments = mvm->trans->max_skb_frags;
343
344 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
345 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
346 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
347 hw->wiphy->cipher_suites = mvm->ciphers;
348
349 if (iwl_mvm_has_new_rx_api(mvm)) {
350 mvm->ciphers[hw->wiphy->n_cipher_suites] =
351 WLAN_CIPHER_SUITE_GCMP;
352 hw->wiphy->n_cipher_suites++;
353 mvm->ciphers[hw->wiphy->n_cipher_suites] =
354 WLAN_CIPHER_SUITE_GCMP_256;
355 hw->wiphy->n_cipher_suites++;
356 }
357
358 if (iwlwifi_mod_params.swcrypto)
359 IWL_ERR(mvm,
360 "iwlmvm doesn't allow to disable HW crypto, check swcrypto module parameter\n");
361 if (!iwlwifi_mod_params.bt_coex_active)
362 IWL_ERR(mvm,
363 "iwlmvm doesn't allow to disable BT Coex, check bt_coex_active module parameter\n");
364
365 ieee80211_hw_set(hw, MFP_CAPABLE);
366 mvm->ciphers[hw->wiphy->n_cipher_suites] = WLAN_CIPHER_SUITE_AES_CMAC;
367 hw->wiphy->n_cipher_suites++;
368 if (iwl_mvm_has_new_rx_api(mvm)) {
369 mvm->ciphers[hw->wiphy->n_cipher_suites] =
370 WLAN_CIPHER_SUITE_BIP_GMAC_128;
371 hw->wiphy->n_cipher_suites++;
372 mvm->ciphers[hw->wiphy->n_cipher_suites] =
373 WLAN_CIPHER_SUITE_BIP_GMAC_256;
374 hw->wiphy->n_cipher_suites++;
375 }
376
377 if (fw_has_capa(&mvm->fw->ucode_capa,
378 IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) {
379 wiphy_ext_feature_set(hw->wiphy,
380 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER);
381 hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa;
382 }
383
384 if (fw_has_capa(&mvm->fw->ucode_capa,
385 IWL_UCODE_TLV_CAPA_BIGTK_SUPPORT))
386 wiphy_ext_feature_set(hw->wiphy,
387 NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT);
388
389 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
390 hw->wiphy->features |=
391 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
392 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
393 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
394
395 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
396 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
397 hw->chanctx_data_size = sizeof(u16);
398 hw->txq_data_size = sizeof(struct iwl_mvm_txq);
399
400 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
401 BIT(NL80211_IFTYPE_P2P_CLIENT) |
402 BIT(NL80211_IFTYPE_AP) |
403 BIT(NL80211_IFTYPE_P2P_GO) |
404 BIT(NL80211_IFTYPE_P2P_DEVICE) |
405 BIT(NL80211_IFTYPE_ADHOC);
406
407 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
408 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
409
410 /* The new Tx API does not allow to pass the key or keyid of a MPDU to
411 * the hw, preventing us to control which key(id) to use per MPDU.
412 * Till that's fixed we can't use Extended Key ID for the newer cards.
413 */
414 if (!iwl_mvm_has_new_tx_api(mvm))
415 wiphy_ext_feature_set(hw->wiphy,
416 NL80211_EXT_FEATURE_EXT_KEY_ID);
417 hw->wiphy->features |= NL80211_FEATURE_HT_IBSS;
418
419 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
420 if (iwl_mvm_is_lar_supported(mvm))
421 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
422 else
423 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
424 REGULATORY_DISABLE_BEACON_HINTS;
425
426 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
427 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
428 hw->wiphy->flags |= WIPHY_FLAG_SPLIT_SCAN_6GHZ;
429
430 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
431 hw->wiphy->n_iface_combinations =
432 ARRAY_SIZE(iwl_mvm_iface_combinations);
433
434 hw->wiphy->max_remain_on_channel_duration = 10000;
435 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
436
437 /* Extract MAC address */
438 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
439 hw->wiphy->addresses = mvm->addresses;
440 hw->wiphy->n_addresses = 1;
441
442 /* Extract additional MAC addresses if available */
443 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
444 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
445
446 for (i = 1; i < num_mac; i++) {
447 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
448 ETH_ALEN);
449 mvm->addresses[i].addr[5]++;
450 hw->wiphy->n_addresses++;
451 }
452
453 iwl_mvm_reset_phy_ctxts(mvm);
454
455 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
456
457 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
458
459 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
460 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
461 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
462
463 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
464 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
465 else
466 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
467
468 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
469 hw->wiphy->bands[NL80211_BAND_2GHZ] =
470 &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
471 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
472 hw->wiphy->bands[NL80211_BAND_5GHZ] =
473 &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
474
475 if (fw_has_capa(&mvm->fw->ucode_capa,
476 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
477 fw_has_api(&mvm->fw->ucode_capa,
478 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
479 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
480 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
481 }
482 if (fw_has_capa(&mvm->fw->ucode_capa,
483 IWL_UCODE_TLV_CAPA_PSC_CHAN_SUPPORT) &&
484 mvm->nvm_data->bands[NL80211_BAND_6GHZ].n_channels)
485 hw->wiphy->bands[NL80211_BAND_6GHZ] =
486 &mvm->nvm_data->bands[NL80211_BAND_6GHZ];
487
488 hw->wiphy->hw_version = mvm->trans->hw_id;
489
490 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
491 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
492 else
493 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
494
495 hw->wiphy->max_sched_scan_reqs = 1;
496 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
497 hw->wiphy->max_match_sets = iwl_umac_scan_get_max_profiles(mvm->fw);
498 /* we create the 802.11 header and zero length SSID IE. */
499 hw->wiphy->max_sched_scan_ie_len =
500 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
501 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
502 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
503
504 /*
505 * the firmware uses u8 for num of iterations, but 0xff is saved for
506 * infinite loop, so the maximum number of iterations is actually 254.
507 */
508 hw->wiphy->max_sched_scan_plan_iterations = 254;
509
510 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
511 NL80211_FEATURE_LOW_PRIORITY_SCAN |
512 NL80211_FEATURE_P2P_GO_OPPPS |
513 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
514 NL80211_FEATURE_DYNAMIC_SMPS |
515 NL80211_FEATURE_STATIC_SMPS |
516 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
517
518 if (fw_has_capa(&mvm->fw->ucode_capa,
519 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
520 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
521 if (fw_has_capa(&mvm->fw->ucode_capa,
522 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
523 hw->wiphy->features |= NL80211_FEATURE_QUIET;
524
525 if (fw_has_capa(&mvm->fw->ucode_capa,
526 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
527 hw->wiphy->features |=
528 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
529
530 if (fw_has_capa(&mvm->fw->ucode_capa,
531 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
532 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
533
534 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_KEK_KCK_MATERIAL,
535 IWL_FW_CMD_VER_UNKNOWN) == 3)
536 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK;
537
538 if (fw_has_api(&mvm->fw->ucode_capa,
539 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
540 wiphy_ext_feature_set(hw->wiphy,
541 NL80211_EXT_FEATURE_SCAN_START_TIME);
542 wiphy_ext_feature_set(hw->wiphy,
543 NL80211_EXT_FEATURE_BSS_PARENT_TSF);
544 }
545
546 if (iwl_mvm_is_oce_supported(mvm)) {
547 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 0);
548
549 wiphy_ext_feature_set(hw->wiphy,
550 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP);
551 wiphy_ext_feature_set(hw->wiphy,
552 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME);
553 wiphy_ext_feature_set(hw->wiphy,
554 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE);
555
556 /* Old firmware also supports probe deferral and suppression */
557 if (scan_ver < 15)
558 wiphy_ext_feature_set(hw->wiphy,
559 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION);
560 }
561
562 if (mvm->nvm_data->sku_cap_11ax_enable &&
563 !iwlwifi_mod_params.disable_11ax) {
564 hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa;
565 hw->wiphy->num_iftype_ext_capab =
566 ARRAY_SIZE(he_iftypes_ext_capa);
567
568 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
569 ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID);
570 }
571
572 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
573
574 #ifdef CONFIG_PM_SLEEP
575 if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) &&
576 mvm->trans->ops->d3_suspend &&
577 mvm->trans->ops->d3_resume &&
578 device_can_wakeup(mvm->trans->dev)) {
579 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
580 WIPHY_WOWLAN_DISCONNECT |
581 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
582 WIPHY_WOWLAN_RFKILL_RELEASE |
583 WIPHY_WOWLAN_NET_DETECT;
584 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
585 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
586 WIPHY_WOWLAN_4WAY_HANDSHAKE;
587
588 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
589 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
590 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
591 mvm->wowlan.max_nd_match_sets =
592 iwl_umac_scan_get_max_profiles(mvm->fw);
593 hw->wiphy->wowlan = &mvm->wowlan;
594 }
595 #endif
596
597 ret = iwl_mvm_leds_init(mvm);
598 if (ret)
599 return ret;
600
601 if (fw_has_capa(&mvm->fw->ucode_capa,
602 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
603 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
604 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
605 ieee80211_hw_set(hw, TDLS_WIDER_BW);
606 }
607
608 if (fw_has_capa(&mvm->fw->ucode_capa,
609 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
610 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
611 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
612 }
613
614 hw->netdev_features |= mvm->cfg->features;
615 if (!iwl_mvm_is_csum_supported(mvm))
616 hw->netdev_features &= ~IWL_CSUM_NETIF_FLAGS_MASK;
617
618 if (mvm->cfg->vht_mu_mimo_supported)
619 wiphy_ext_feature_set(hw->wiphy,
620 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
621
622 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_PROTECTED_TWT))
623 wiphy_ext_feature_set(hw->wiphy,
624 NL80211_EXT_FEATURE_PROTECTED_TWT);
625
626 iwl_mvm_vendor_cmds_register(mvm);
627
628 hw->wiphy->available_antennas_tx = iwl_mvm_get_valid_tx_ant(mvm);
629 hw->wiphy->available_antennas_rx = iwl_mvm_get_valid_rx_ant(mvm);
630
631 ret = ieee80211_register_hw(mvm->hw);
632 if (ret) {
633 iwl_mvm_leds_exit(mvm);
634 }
635
636 return ret;
637 }
638
iwl_mvm_tx_skb(struct iwl_mvm * mvm,struct sk_buff * skb,struct ieee80211_sta * sta)639 static void iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
640 struct ieee80211_sta *sta)
641 {
642 if (likely(sta)) {
643 if (likely(iwl_mvm_tx_skb_sta(mvm, skb, sta) == 0))
644 return;
645 } else {
646 if (likely(iwl_mvm_tx_skb_non_sta(mvm, skb) == 0))
647 return;
648 }
649
650 ieee80211_free_txskb(mvm->hw, skb);
651 }
652
iwl_mvm_mac_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)653 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
654 struct ieee80211_tx_control *control,
655 struct sk_buff *skb)
656 {
657 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
658 struct ieee80211_sta *sta = control->sta;
659 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
660 struct ieee80211_hdr *hdr = (void *)skb->data;
661 bool offchannel = IEEE80211_SKB_CB(skb)->flags &
662 IEEE80211_TX_CTL_TX_OFFCHAN;
663
664 if (iwl_mvm_is_radio_killed(mvm)) {
665 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
666 goto drop;
667 }
668
669 if (offchannel &&
670 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
671 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
672 goto drop;
673
674 /*
675 * bufferable MMPDUs or MMPDUs on STA interfaces come via TXQs
676 * so we treat the others as broadcast
677 */
678 if (ieee80211_is_mgmt(hdr->frame_control))
679 sta = NULL;
680
681 /* If there is no sta, and it's not offchannel - send through AP */
682 if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION &&
683 !offchannel) {
684 struct iwl_mvm_vif *mvmvif =
685 iwl_mvm_vif_from_mac80211(info->control.vif);
686 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id);
687
688 if (ap_sta_id < mvm->fw->ucode_capa.num_stations) {
689 /* mac80211 holds rcu read lock */
690 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]);
691 if (IS_ERR_OR_NULL(sta))
692 goto drop;
693 }
694 }
695
696 iwl_mvm_tx_skb(mvm, skb, sta);
697 return;
698 drop:
699 ieee80211_free_txskb(hw, skb);
700 }
701
iwl_mvm_mac_itxq_xmit(struct ieee80211_hw * hw,struct ieee80211_txq * txq)702 void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq)
703 {
704 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
705 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
706 struct sk_buff *skb = NULL;
707
708 /*
709 * No need for threads to be pending here, they can leave the first
710 * taker all the work.
711 *
712 * mvmtxq->tx_request logic:
713 *
714 * If 0, no one is currently TXing, set to 1 to indicate current thread
715 * will now start TX and other threads should quit.
716 *
717 * If 1, another thread is currently TXing, set to 2 to indicate to
718 * that thread that there was another request. Since that request may
719 * have raced with the check whether the queue is empty, the TXing
720 * thread should check the queue's status one more time before leaving.
721 * This check is done in order to not leave any TX hanging in the queue
722 * until the next TX invocation (which may not even happen).
723 *
724 * If 2, another thread is currently TXing, and it will already double
725 * check the queue, so do nothing.
726 */
727 if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2))
728 return;
729
730 rcu_read_lock();
731 do {
732 while (likely(!mvmtxq->stopped &&
733 !test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))) {
734 skb = ieee80211_tx_dequeue(hw, txq);
735
736 if (!skb) {
737 if (txq->sta)
738 IWL_DEBUG_TX(mvm,
739 "TXQ of sta %pM tid %d is now empty\n",
740 txq->sta->addr,
741 txq->tid);
742 break;
743 }
744
745 iwl_mvm_tx_skb(mvm, skb, txq->sta);
746 }
747 } while (atomic_dec_return(&mvmtxq->tx_request));
748 rcu_read_unlock();
749 }
750
iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw * hw,struct ieee80211_txq * txq)751 static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw,
752 struct ieee80211_txq *txq)
753 {
754 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
755 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
756
757 /*
758 * Please note that racing is handled very carefully here:
759 * mvmtxq->txq_id is updated during allocation, and mvmtxq->list is
760 * deleted afterwards.
761 * This means that if:
762 * mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list):
763 * queue is allocated and we can TX.
764 * mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list):
765 * a race, should defer the frame.
766 * mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list):
767 * need to allocate the queue and defer the frame.
768 * mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list):
769 * queue is already scheduled for allocation, no need to allocate,
770 * should defer the frame.
771 */
772
773 /* If the queue is allocated TX and return. */
774 if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) {
775 /*
776 * Check that list is empty to avoid a race where txq_id is
777 * already updated, but the queue allocation work wasn't
778 * finished
779 */
780 if (unlikely(txq->sta && !list_empty(&mvmtxq->list)))
781 return;
782
783 iwl_mvm_mac_itxq_xmit(hw, txq);
784 return;
785 }
786
787 /* The list is being deleted only after the queue is fully allocated. */
788 if (!list_empty(&mvmtxq->list))
789 return;
790
791 list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs);
792 schedule_work(&mvm->add_stream_wk);
793 }
794
795 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
796 do { \
797 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
798 break; \
799 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \
800 } while (0)
801
802 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)803 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
804 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
805 enum ieee80211_ampdu_mlme_action action)
806 {
807 struct iwl_fw_dbg_trigger_tlv *trig;
808 struct iwl_fw_dbg_trigger_ba *ba_trig;
809
810 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
811 FW_DBG_TRIGGER_BA);
812 if (!trig)
813 return;
814
815 ba_trig = (void *)trig->data;
816
817 switch (action) {
818 case IEEE80211_AMPDU_TX_OPERATIONAL: {
819 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
820 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
821
822 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
823 "TX AGG START: MAC %pM tid %d ssn %d\n",
824 sta->addr, tid, tid_data->ssn);
825 break;
826 }
827 case IEEE80211_AMPDU_TX_STOP_CONT:
828 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
829 "TX AGG STOP: MAC %pM tid %d\n",
830 sta->addr, tid);
831 break;
832 case IEEE80211_AMPDU_RX_START:
833 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
834 "RX AGG START: MAC %pM tid %d ssn %d\n",
835 sta->addr, tid, rx_ba_ssn);
836 break;
837 case IEEE80211_AMPDU_RX_STOP:
838 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
839 "RX AGG STOP: MAC %pM tid %d\n",
840 sta->addr, tid);
841 break;
842 default:
843 break;
844 }
845 }
846
iwl_mvm_mac_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)847 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
848 struct ieee80211_vif *vif,
849 struct ieee80211_ampdu_params *params)
850 {
851 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
852 int ret;
853 struct ieee80211_sta *sta = params->sta;
854 enum ieee80211_ampdu_mlme_action action = params->action;
855 u16 tid = params->tid;
856 u16 *ssn = ¶ms->ssn;
857 u16 buf_size = params->buf_size;
858 bool amsdu = params->amsdu;
859 u16 timeout = params->timeout;
860
861 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
862 sta->addr, tid, action);
863
864 if (!(mvm->nvm_data->sku_cap_11n_enable))
865 return -EACCES;
866
867 mutex_lock(&mvm->mutex);
868
869 switch (action) {
870 case IEEE80211_AMPDU_RX_START:
871 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id ==
872 iwl_mvm_sta_from_mac80211(sta)->sta_id) {
873 struct iwl_mvm_vif *mvmvif;
874 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id;
875 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid];
876
877 mdata->opened_rx_ba_sessions = true;
878 mvmvif = iwl_mvm_vif_from_mac80211(vif);
879 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk);
880 }
881 if (!iwl_enable_rx_ampdu()) {
882 ret = -EINVAL;
883 break;
884 }
885 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
886 timeout);
887 break;
888 case IEEE80211_AMPDU_RX_STOP:
889 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
890 timeout);
891 break;
892 case IEEE80211_AMPDU_TX_START:
893 if (!iwl_enable_tx_ampdu()) {
894 ret = -EINVAL;
895 break;
896 }
897 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
898 break;
899 case IEEE80211_AMPDU_TX_STOP_CONT:
900 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
901 break;
902 case IEEE80211_AMPDU_TX_STOP_FLUSH:
903 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
904 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
905 break;
906 case IEEE80211_AMPDU_TX_OPERATIONAL:
907 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
908 buf_size, amsdu);
909 break;
910 default:
911 WARN_ON_ONCE(1);
912 ret = -EINVAL;
913 break;
914 }
915
916 if (!ret) {
917 u16 rx_ba_ssn = 0;
918
919 if (action == IEEE80211_AMPDU_RX_START)
920 rx_ba_ssn = *ssn;
921
922 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
923 rx_ba_ssn, action);
924 }
925 mutex_unlock(&mvm->mutex);
926
927 return ret;
928 }
929
iwl_mvm_cleanup_iterator(void * data,u8 * mac,struct ieee80211_vif * vif)930 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
931 struct ieee80211_vif *vif)
932 {
933 struct iwl_mvm *mvm = data;
934 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
935
936 mvmvif->uploaded = false;
937 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
938
939 spin_lock_bh(&mvm->time_event_lock);
940 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
941 spin_unlock_bh(&mvm->time_event_lock);
942
943 mvmvif->phy_ctxt = NULL;
944 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
945 memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data));
946 }
947
iwl_mvm_restart_cleanup(struct iwl_mvm * mvm)948 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
949 {
950 iwl_mvm_stop_device(mvm);
951
952 mvm->cur_aid = 0;
953
954 mvm->scan_status = 0;
955 mvm->ps_disabled = false;
956 mvm->rfkill_safe_init_done = false;
957
958 /* just in case one was running */
959 iwl_mvm_cleanup_roc_te(mvm);
960 ieee80211_remain_on_channel_expired(mvm->hw);
961
962 iwl_mvm_ftm_restart(mvm);
963
964 /*
965 * cleanup all interfaces, even inactive ones, as some might have
966 * gone down during the HW restart
967 */
968 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
969
970 mvm->p2p_device_vif = NULL;
971
972 iwl_mvm_reset_phy_ctxts(mvm);
973 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
974 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
975 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
976
977 ieee80211_wake_queues(mvm->hw);
978
979 mvm->rx_ba_sessions = 0;
980 mvm->fwrt.dump.conf = FW_DBG_INVALID;
981 mvm->monitor_on = false;
982
983 /* keep statistics ticking */
984 iwl_mvm_accu_radio_stats(mvm);
985 }
986
__iwl_mvm_mac_start(struct iwl_mvm * mvm)987 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
988 {
989 int ret;
990
991 lockdep_assert_held(&mvm->mutex);
992
993 ret = iwl_mvm_mei_get_ownership(mvm);
994 if (ret)
995 return ret;
996
997 if (mvm->mei_nvm_data) {
998 /* We got the NIC, we can now free the MEI NVM data */
999 kfree(mvm->mei_nvm_data);
1000 mvm->mei_nvm_data = NULL;
1001
1002 /*
1003 * We can't free the nvm_data we allocated based on the SAP
1004 * data because we registered to cfg80211 with the channels
1005 * allocated on mvm->nvm_data. Keep a pointer in temp_nvm_data
1006 * just in order to be able free it later.
1007 * NULLify nvm_data so that we will read the NVM from the
1008 * firmware this time.
1009 */
1010 mvm->temp_nvm_data = mvm->nvm_data;
1011 mvm->nvm_data = NULL;
1012 }
1013
1014 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
1015 /*
1016 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
1017 * so later code will - from now on - see that we're doing it.
1018 */
1019 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1020 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1021 /* Clean up some internal and mac80211 state on restart */
1022 iwl_mvm_restart_cleanup(mvm);
1023 }
1024 ret = iwl_mvm_up(mvm);
1025
1026 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT,
1027 NULL);
1028 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC,
1029 NULL);
1030
1031 mvm->last_reset_or_resume_time_jiffies = jiffies;
1032
1033 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1034 /* Something went wrong - we need to finish some cleanup
1035 * that normally iwl_mvm_mac_restart_complete() below
1036 * would do.
1037 */
1038 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1039 }
1040
1041 return ret;
1042 }
1043
iwl_mvm_mac_start(struct ieee80211_hw * hw)1044 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1045 {
1046 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1047 int ret;
1048 int retry, max_retry = 0;
1049
1050 mutex_lock(&mvm->mutex);
1051
1052 /* we are starting the mac not in error flow, and restart is enabled */
1053 if (!test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) &&
1054 iwlwifi_mod_params.fw_restart) {
1055 max_retry = IWL_MAX_INIT_RETRY;
1056 /*
1057 * This will prevent mac80211 recovery flows to trigger during
1058 * init failures
1059 */
1060 set_bit(IWL_MVM_STATUS_STARTING, &mvm->status);
1061 }
1062
1063 for (retry = 0; retry <= max_retry; retry++) {
1064 ret = __iwl_mvm_mac_start(mvm);
1065 if (!ret)
1066 break;
1067
1068 IWL_ERR(mvm, "mac start retry %d\n", retry);
1069 }
1070 clear_bit(IWL_MVM_STATUS_STARTING, &mvm->status);
1071
1072 mutex_unlock(&mvm->mutex);
1073
1074 iwl_mvm_mei_set_sw_rfkill_state(mvm);
1075
1076 return ret;
1077 }
1078
iwl_mvm_restart_complete(struct iwl_mvm * mvm)1079 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1080 {
1081 int ret;
1082
1083 mutex_lock(&mvm->mutex);
1084
1085 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1086
1087 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1088 if (ret)
1089 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1090 ret);
1091
1092 iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY);
1093
1094 /*
1095 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1096 * of packets the FW sent out, so we must reconnect.
1097 */
1098 iwl_mvm_teardown_tdls_peers(mvm);
1099
1100 mutex_unlock(&mvm->mutex);
1101 }
1102
1103 static void
iwl_mvm_mac_reconfig_complete(struct ieee80211_hw * hw,enum ieee80211_reconfig_type reconfig_type)1104 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1105 enum ieee80211_reconfig_type reconfig_type)
1106 {
1107 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1108
1109 switch (reconfig_type) {
1110 case IEEE80211_RECONFIG_TYPE_RESTART:
1111 iwl_mvm_restart_complete(mvm);
1112 break;
1113 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1114 break;
1115 }
1116 }
1117
__iwl_mvm_mac_stop(struct iwl_mvm * mvm)1118 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1119 {
1120 lockdep_assert_held(&mvm->mutex);
1121
1122 iwl_mvm_ftm_initiator_smooth_stop(mvm);
1123
1124 /* firmware counters are obviously reset now, but we shouldn't
1125 * partially track so also clear the fw_reset_accu counters.
1126 */
1127 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1128
1129 /* async_handlers_wk is now blocked */
1130
1131 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) < 12)
1132 iwl_mvm_rm_aux_sta(mvm);
1133
1134 iwl_mvm_stop_device(mvm);
1135
1136 iwl_mvm_async_handlers_purge(mvm);
1137 /* async_handlers_list is empty and will stay empty: HW is stopped */
1138
1139 /*
1140 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the
1141 * hw (as restart_complete() won't be called in this case) and mac80211
1142 * won't execute the restart.
1143 * But make sure to cleanup interfaces that have gone down before/during
1144 * HW restart was requested.
1145 */
1146 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
1147 test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
1148 &mvm->status))
1149 ieee80211_iterate_interfaces(mvm->hw, 0,
1150 iwl_mvm_cleanup_iterator, mvm);
1151
1152 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1153 * make sure there's nothing left there and warn if any is found.
1154 */
1155 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1156 int i;
1157
1158 for (i = 0; i < mvm->max_scans; i++) {
1159 if (WARN_ONCE(mvm->scan_uid_status[i],
1160 "UMAC scan UID %d status was not cleaned\n",
1161 i))
1162 mvm->scan_uid_status[i] = 0;
1163 }
1164 }
1165 }
1166
iwl_mvm_mac_stop(struct ieee80211_hw * hw)1167 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1168 {
1169 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1170
1171 flush_work(&mvm->async_handlers_wk);
1172 flush_work(&mvm->add_stream_wk);
1173
1174 /*
1175 * Lock and clear the firmware running bit here already, so that
1176 * new commands coming in elsewhere, e.g. from debugfs, will not
1177 * be able to proceed. This is important here because one of those
1178 * debugfs files causes the firmware dump to be triggered, and if we
1179 * don't stop debugfs accesses before canceling that it could be
1180 * retriggered after we flush it but before we've cleared the bit.
1181 */
1182 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1183
1184 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1185 cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1186
1187 /*
1188 * The work item could be running or queued if the
1189 * ROC time event stops just as we get here.
1190 */
1191 flush_work(&mvm->roc_done_wk);
1192
1193 iwl_mvm_mei_set_sw_rfkill_state(mvm);
1194
1195 mutex_lock(&mvm->mutex);
1196 __iwl_mvm_mac_stop(mvm);
1197 mutex_unlock(&mvm->mutex);
1198
1199 /*
1200 * The worker might have been waiting for the mutex, let it run and
1201 * discover that its list is now empty.
1202 */
1203 cancel_work_sync(&mvm->async_handlers_wk);
1204 }
1205
iwl_mvm_get_free_phy_ctxt(struct iwl_mvm * mvm)1206 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1207 {
1208 u16 i;
1209
1210 lockdep_assert_held(&mvm->mutex);
1211
1212 for (i = 0; i < NUM_PHY_CTX; i++)
1213 if (!mvm->phy_ctxts[i].ref)
1214 return &mvm->phy_ctxts[i];
1215
1216 IWL_ERR(mvm, "No available PHY context\n");
1217 return NULL;
1218 }
1219
iwl_mvm_set_tx_power(struct iwl_mvm * mvm,struct ieee80211_vif * vif,s16 tx_power)1220 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1221 s16 tx_power)
1222 {
1223 u32 cmd_id = REDUCE_TX_POWER_CMD;
1224 int len;
1225 struct iwl_dev_tx_power_cmd cmd = {
1226 .common.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1227 .common.mac_context_id =
1228 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1229 .common.pwr_restriction = cpu_to_le16(8 * tx_power),
1230 };
1231 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id,
1232 IWL_FW_CMD_VER_UNKNOWN);
1233
1234 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1235 cmd.common.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1236
1237 if (cmd_ver == 7)
1238 len = sizeof(cmd.v7);
1239 else if (cmd_ver == 6)
1240 len = sizeof(cmd.v6);
1241 else if (fw_has_api(&mvm->fw->ucode_capa,
1242 IWL_UCODE_TLV_API_REDUCE_TX_POWER))
1243 len = sizeof(cmd.v5);
1244 else if (fw_has_capa(&mvm->fw->ucode_capa,
1245 IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1246 len = sizeof(cmd.v4);
1247 else
1248 len = sizeof(cmd.v3);
1249
1250 /* all structs have the same common part, add it */
1251 len += sizeof(cmd.common);
1252
1253 return iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, len, &cmd);
1254 }
1255
iwl_mvm_post_channel_switch(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1256 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
1257 struct ieee80211_vif *vif)
1258 {
1259 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1260 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1261 int ret;
1262
1263 mutex_lock(&mvm->mutex);
1264
1265 if (vif->type == NL80211_IFTYPE_STATION) {
1266 struct iwl_mvm_sta *mvmsta;
1267
1268 mvmvif->csa_bcn_pending = false;
1269 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
1270 mvmvif->ap_sta_id);
1271
1272 if (WARN_ON(!mvmsta)) {
1273 ret = -EIO;
1274 goto out_unlock;
1275 }
1276
1277 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
1278
1279 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1280
1281 if (!fw_has_capa(&mvm->fw->ucode_capa,
1282 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
1283 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1284 if (ret)
1285 goto out_unlock;
1286
1287 iwl_mvm_stop_session_protection(mvm, vif);
1288 }
1289 }
1290
1291 mvmvif->ps_disabled = false;
1292
1293 ret = iwl_mvm_power_update_ps(mvm);
1294
1295 out_unlock:
1296 if (mvmvif->csa_failed)
1297 ret = -EIO;
1298 mutex_unlock(&mvm->mutex);
1299
1300 return ret;
1301 }
1302
iwl_mvm_abort_channel_switch(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1303 static void iwl_mvm_abort_channel_switch(struct ieee80211_hw *hw,
1304 struct ieee80211_vif *vif)
1305 {
1306 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1307 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1308 struct iwl_chan_switch_te_cmd cmd = {
1309 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1310 mvmvif->color)),
1311 .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE),
1312 };
1313
1314 /*
1315 * In the new flow since FW is in charge of the timing,
1316 * if driver has canceled the channel switch he will receive the
1317 * CHANNEL_SWITCH_START_NOTIF notification from FW and then cancel it
1318 */
1319 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1320 CHANNEL_SWITCH_ERROR_NOTIF, 0))
1321 return;
1322
1323 IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id);
1324
1325 mutex_lock(&mvm->mutex);
1326 if (!fw_has_capa(&mvm->fw->ucode_capa,
1327 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
1328 iwl_mvm_remove_csa_period(mvm, vif);
1329 else
1330 WARN_ON(iwl_mvm_send_cmd_pdu(mvm,
1331 WIDE_ID(MAC_CONF_GROUP,
1332 CHANNEL_SWITCH_TIME_EVENT_CMD),
1333 0, sizeof(cmd), &cmd));
1334 mvmvif->csa_failed = true;
1335 mutex_unlock(&mvm->mutex);
1336
1337 iwl_mvm_post_channel_switch(hw, vif);
1338 }
1339
iwl_mvm_channel_switch_disconnect_wk(struct work_struct * wk)1340 static void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk)
1341 {
1342 struct iwl_mvm_vif *mvmvif;
1343 struct ieee80211_vif *vif;
1344
1345 mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work);
1346 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);
1347
1348 /* Trigger disconnect (should clear the CSA state) */
1349 ieee80211_chswitch_done(vif, false);
1350 }
1351
iwl_mvm_mac_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1352 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1353 struct ieee80211_vif *vif)
1354 {
1355 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1356 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1357 int ret;
1358
1359 mvmvif->mvm = mvm;
1360 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1361
1362 /*
1363 * Not much to do here. The stack will not allow interface
1364 * types or combinations that we didn't advertise, so we
1365 * don't really have to check the types.
1366 */
1367
1368 mutex_lock(&mvm->mutex);
1369
1370 /* make sure that beacon statistics don't go backwards with FW reset */
1371 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1372 mvmvif->beacon_stats.accu_num_beacons +=
1373 mvmvif->beacon_stats.num_beacons;
1374
1375 /* Allocate resources for the MAC context, and add it to the fw */
1376 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1377 if (ret)
1378 goto out_unlock;
1379
1380 rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif);
1381
1382 /*
1383 * The AP binding flow can be done only after the beacon
1384 * template is configured (which happens only in the mac80211
1385 * start_ap() flow), and adding the broadcast station can happen
1386 * only after the binding.
1387 * In addition, since modifying the MAC before adding a bcast
1388 * station is not allowed by the FW, delay the adding of MAC context to
1389 * the point where we can also add the bcast station.
1390 * In short: there's not much we can do at this point, other than
1391 * allocating resources :)
1392 */
1393 if (vif->type == NL80211_IFTYPE_AP ||
1394 vif->type == NL80211_IFTYPE_ADHOC) {
1395 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1396 if (ret) {
1397 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1398 goto out_unlock;
1399 }
1400
1401 /*
1402 * Only queue for this station is the mcast queue,
1403 * which shouldn't be in TFD mask anyway
1404 */
1405 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1406 0, vif->type,
1407 IWL_STA_MULTICAST);
1408 if (ret)
1409 goto out_unlock;
1410
1411 iwl_mvm_vif_dbgfs_register(mvm, vif);
1412 goto out_unlock;
1413 }
1414
1415 mvmvif->features |= hw->netdev_features;
1416
1417 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1418 if (ret)
1419 goto out_unlock;
1420
1421 ret = iwl_mvm_power_update_mac(mvm);
1422 if (ret)
1423 goto out_remove_mac;
1424
1425 /* beacon filtering */
1426 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1427 if (ret)
1428 goto out_remove_mac;
1429
1430 if (!mvm->bf_allowed_vif &&
1431 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1432 mvm->bf_allowed_vif = mvmvif;
1433 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1434 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1435 }
1436
1437 /*
1438 * P2P_DEVICE interface does not have a channel context assigned to it,
1439 * so a dedicated PHY context is allocated to it and the corresponding
1440 * MAC context is bound to it at this stage.
1441 */
1442 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1443
1444 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1445 if (!mvmvif->phy_ctxt) {
1446 ret = -ENOSPC;
1447 goto out_free_bf;
1448 }
1449
1450 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1451 ret = iwl_mvm_binding_add_vif(mvm, vif);
1452 if (ret)
1453 goto out_unref_phy;
1454
1455 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif);
1456 if (ret)
1457 goto out_unbind;
1458
1459 /* Save a pointer to p2p device vif, so it can later be used to
1460 * update the p2p device MAC when a GO is started/stopped */
1461 mvm->p2p_device_vif = vif;
1462 }
1463
1464 iwl_mvm_tcm_add_vif(mvm, vif);
1465 INIT_DELAYED_WORK(&mvmvif->csa_work,
1466 iwl_mvm_channel_switch_disconnect_wk);
1467
1468 if (vif->type == NL80211_IFTYPE_MONITOR)
1469 mvm->monitor_on = true;
1470
1471 iwl_mvm_vif_dbgfs_register(mvm, vif);
1472
1473 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1474 vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
1475 !mvm->csme_vif && mvm->mei_registered) {
1476 iwl_mei_set_nic_info(vif->addr, mvm->nvm_data->hw_addr);
1477 iwl_mei_set_netdev(ieee80211_vif_to_wdev(vif)->netdev);
1478 mvm->csme_vif = vif;
1479 }
1480
1481 goto out_unlock;
1482
1483 out_unbind:
1484 iwl_mvm_binding_remove_vif(mvm, vif);
1485 out_unref_phy:
1486 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1487 out_free_bf:
1488 if (mvm->bf_allowed_vif == mvmvif) {
1489 mvm->bf_allowed_vif = NULL;
1490 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1491 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1492 }
1493 out_remove_mac:
1494 mvmvif->phy_ctxt = NULL;
1495 iwl_mvm_mac_ctxt_remove(mvm, vif);
1496 out_unlock:
1497 mutex_unlock(&mvm->mutex);
1498
1499 return ret;
1500 }
1501
iwl_mvm_prepare_mac_removal(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1502 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1503 struct ieee80211_vif *vif)
1504 {
1505 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1506 /*
1507 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1508 * We assume here that all the packets sent to the OFFCHANNEL
1509 * queue are sent in ROC session.
1510 */
1511 flush_work(&mvm->roc_done_wk);
1512 }
1513 }
1514
iwl_mvm_mac_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1515 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1516 struct ieee80211_vif *vif)
1517 {
1518 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1519 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1520 struct iwl_probe_resp_data *probe_data;
1521
1522 iwl_mvm_prepare_mac_removal(mvm, vif);
1523
1524 if (!(vif->type == NL80211_IFTYPE_AP ||
1525 vif->type == NL80211_IFTYPE_ADHOC))
1526 iwl_mvm_tcm_rm_vif(mvm, vif);
1527
1528 mutex_lock(&mvm->mutex);
1529
1530 if (vif == mvm->csme_vif) {
1531 iwl_mei_set_netdev(NULL);
1532 mvm->csme_vif = NULL;
1533 }
1534
1535 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data,
1536 lockdep_is_held(&mvm->mutex));
1537 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1538 if (probe_data)
1539 kfree_rcu(probe_data, rcu_head);
1540
1541 if (mvm->bf_allowed_vif == mvmvif) {
1542 mvm->bf_allowed_vif = NULL;
1543 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1544 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1545 }
1546
1547 if (vif->bss_conf.ftm_responder)
1548 memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats));
1549
1550 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1551
1552 /*
1553 * For AP/GO interface, the tear down of the resources allocated to the
1554 * interface is be handled as part of the stop_ap flow.
1555 */
1556 if (vif->type == NL80211_IFTYPE_AP ||
1557 vif->type == NL80211_IFTYPE_ADHOC) {
1558 #ifdef CONFIG_NL80211_TESTMODE
1559 if (vif == mvm->noa_vif) {
1560 mvm->noa_vif = NULL;
1561 mvm->noa_duration = 0;
1562 }
1563 #endif
1564 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1565 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1566 goto out_release;
1567 }
1568
1569 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1570 mvm->p2p_device_vif = NULL;
1571 iwl_mvm_rm_p2p_bcast_sta(mvm, vif);
1572 iwl_mvm_binding_remove_vif(mvm, vif);
1573 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1574 mvmvif->phy_ctxt = NULL;
1575 }
1576
1577 iwl_mvm_power_update_mac(mvm);
1578 iwl_mvm_mac_ctxt_remove(mvm, vif);
1579
1580 RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL);
1581
1582 if (vif->type == NL80211_IFTYPE_MONITOR)
1583 mvm->monitor_on = false;
1584
1585 out_release:
1586 mutex_unlock(&mvm->mutex);
1587 }
1588
iwl_mvm_mac_config(struct ieee80211_hw * hw,u32 changed)1589 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1590 {
1591 return 0;
1592 }
1593
1594 struct iwl_mvm_mc_iter_data {
1595 struct iwl_mvm *mvm;
1596 int port_id;
1597 };
1598
iwl_mvm_mc_iface_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)1599 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1600 struct ieee80211_vif *vif)
1601 {
1602 struct iwl_mvm_mc_iter_data *data = _data;
1603 struct iwl_mvm *mvm = data->mvm;
1604 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1605 struct iwl_host_cmd hcmd = {
1606 .id = MCAST_FILTER_CMD,
1607 .flags = CMD_ASYNC,
1608 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1609 };
1610 int ret, len;
1611
1612 /* if we don't have free ports, mcast frames will be dropped */
1613 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1614 return;
1615
1616 if (vif->type != NL80211_IFTYPE_STATION ||
1617 !vif->cfg.assoc)
1618 return;
1619
1620 cmd->port_id = data->port_id++;
1621 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1622 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1623
1624 hcmd.len[0] = len;
1625 hcmd.data[0] = cmd;
1626
1627 ret = iwl_mvm_send_cmd(mvm, &hcmd);
1628 if (ret)
1629 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1630 }
1631
iwl_mvm_recalc_multicast(struct iwl_mvm * mvm)1632 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1633 {
1634 struct iwl_mvm_mc_iter_data iter_data = {
1635 .mvm = mvm,
1636 };
1637 int ret;
1638
1639 lockdep_assert_held(&mvm->mutex);
1640
1641 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1642 return;
1643
1644 ieee80211_iterate_active_interfaces_atomic(
1645 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1646 iwl_mvm_mc_iface_iterator, &iter_data);
1647
1648 /*
1649 * Send a (synchronous) ech command so that we wait for the
1650 * multiple asynchronous MCAST_FILTER_CMD commands sent by
1651 * the interface iterator. Otherwise, we might get here over
1652 * and over again (by userspace just sending a lot of these)
1653 * and the CPU can send them faster than the firmware can
1654 * process them.
1655 * Note that the CPU is still faster - but with this we'll
1656 * actually send fewer commands overall because the CPU will
1657 * not schedule the work in mac80211 as frequently if it's
1658 * still running when rescheduled (possibly multiple times).
1659 */
1660 ret = iwl_mvm_send_cmd_pdu(mvm, ECHO_CMD, 0, 0, NULL);
1661 if (ret)
1662 IWL_ERR(mvm, "Failed to synchronize multicast groups update\n");
1663 }
1664
iwl_mvm_prepare_multicast(struct ieee80211_hw * hw,struct netdev_hw_addr_list * mc_list)1665 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1666 struct netdev_hw_addr_list *mc_list)
1667 {
1668 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1669 struct iwl_mcast_filter_cmd *cmd;
1670 struct netdev_hw_addr *addr;
1671 int addr_count;
1672 bool pass_all;
1673 int len;
1674
1675 addr_count = netdev_hw_addr_list_count(mc_list);
1676 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1677 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1678 if (pass_all)
1679 addr_count = 0;
1680
1681 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1682 cmd = kzalloc(len, GFP_ATOMIC);
1683 if (!cmd)
1684 return 0;
1685
1686 if (pass_all) {
1687 cmd->pass_all = 1;
1688 return (u64)(unsigned long)cmd;
1689 }
1690
1691 netdev_hw_addr_list_for_each(addr, mc_list) {
1692 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1693 cmd->count, addr->addr);
1694 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1695 addr->addr, ETH_ALEN);
1696 cmd->count++;
1697 }
1698
1699 return (u64)(unsigned long)cmd;
1700 }
1701
iwl_mvm_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)1702 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1703 unsigned int changed_flags,
1704 unsigned int *total_flags,
1705 u64 multicast)
1706 {
1707 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1708 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1709
1710 mutex_lock(&mvm->mutex);
1711
1712 /* replace previous configuration */
1713 kfree(mvm->mcast_filter_cmd);
1714 mvm->mcast_filter_cmd = cmd;
1715
1716 if (!cmd)
1717 goto out;
1718
1719 if (changed_flags & FIF_ALLMULTI)
1720 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);
1721
1722 if (cmd->pass_all)
1723 cmd->count = 0;
1724
1725 iwl_mvm_recalc_multicast(mvm);
1726 out:
1727 mutex_unlock(&mvm->mutex);
1728 *total_flags = 0;
1729 }
1730
iwl_mvm_config_iface_filter(struct ieee80211_hw * hw,struct ieee80211_vif * vif,unsigned int filter_flags,unsigned int changed_flags)1731 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1732 struct ieee80211_vif *vif,
1733 unsigned int filter_flags,
1734 unsigned int changed_flags)
1735 {
1736 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1737
1738 /* We support only filter for probe requests */
1739 if (!(changed_flags & FIF_PROBE_REQ))
1740 return;
1741
1742 /* Supported only for p2p client interfaces */
1743 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc ||
1744 !vif->p2p)
1745 return;
1746
1747 mutex_lock(&mvm->mutex);
1748 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1749 mutex_unlock(&mvm->mutex);
1750 }
1751
iwl_mvm_update_mu_groups(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1752 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1753 struct ieee80211_vif *vif)
1754 {
1755 struct iwl_mu_group_mgmt_cmd cmd = {};
1756
1757 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1758 WLAN_MEMBERSHIP_LEN);
1759 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1760 WLAN_USER_POSITION_LEN);
1761
1762 return iwl_mvm_send_cmd_pdu(mvm,
1763 WIDE_ID(DATA_PATH_GROUP,
1764 UPDATE_MU_GROUPS_CMD),
1765 0, sizeof(cmd), &cmd);
1766 }
1767
iwl_mvm_mu_mimo_iface_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)1768 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1769 struct ieee80211_vif *vif)
1770 {
1771 if (vif->bss_conf.mu_mimo_owner) {
1772 struct iwl_mu_group_mgmt_notif *notif = _data;
1773
1774 /*
1775 * MU-MIMO Group Id action frame is little endian. We treat
1776 * the data received from firmware as if it came from the
1777 * action frame, so no conversion is needed.
1778 */
1779 ieee80211_update_mu_groups(vif, 0,
1780 (u8 *)¬if->membership_status,
1781 (u8 *)¬if->user_position);
1782 }
1783 }
1784
iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1785 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1786 struct iwl_rx_cmd_buffer *rxb)
1787 {
1788 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1789 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1790
1791 ieee80211_iterate_active_interfaces_atomic(
1792 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1793 iwl_mvm_mu_mimo_iface_iterator, notif);
1794 }
1795
iwl_mvm_he_get_ppe_val(u8 * ppe,u8 ppe_pos_bit)1796 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit)
1797 {
1798 u8 byte_num = ppe_pos_bit / 8;
1799 u8 bit_num = ppe_pos_bit % 8;
1800 u8 residue_bits;
1801 u8 res;
1802
1803 if (bit_num <= 5)
1804 return (ppe[byte_num] >> bit_num) &
1805 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1);
1806
1807 /*
1808 * If bit_num > 5, we have to combine bits with next byte.
1809 * Calculate how many bits we need to take from current byte (called
1810 * here "residue_bits"), and add them to bits from next byte.
1811 */
1812
1813 residue_bits = 8 - bit_num;
1814
1815 res = (ppe[byte_num + 1] &
1816 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) <<
1817 residue_bits;
1818 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1);
1819
1820 return res;
1821 }
1822
iwl_mvm_parse_ppe(struct iwl_mvm * mvm,struct iwl_he_pkt_ext_v2 * pkt_ext,u8 nss,u8 ru_index_bitmap,u8 * ppe,u8 ppe_pos_bit)1823 static void iwl_mvm_parse_ppe(struct iwl_mvm *mvm,
1824 struct iwl_he_pkt_ext_v2 *pkt_ext, u8 nss,
1825 u8 ru_index_bitmap, u8 *ppe, u8 ppe_pos_bit)
1826 {
1827 int i;
1828
1829 /*
1830 * FW currently supports only nss == MAX_HE_SUPP_NSS
1831 *
1832 * If nss > MAX: we can ignore values we don't support
1833 * If nss < MAX: we can set zeros in other streams
1834 */
1835 if (nss > MAX_HE_SUPP_NSS) {
1836 IWL_DEBUG_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss,
1837 MAX_HE_SUPP_NSS);
1838 nss = MAX_HE_SUPP_NSS;
1839 }
1840
1841 for (i = 0; i < nss; i++) {
1842 u8 ru_index_tmp = ru_index_bitmap << 1;
1843 u8 low_th = IWL_HE_PKT_EXT_NONE, high_th = IWL_HE_PKT_EXT_NONE;
1844 u8 bw;
1845
1846 for (bw = 0;
1847 bw < ARRAY_SIZE(pkt_ext->pkt_ext_qam_th[i]);
1848 bw++) {
1849 ru_index_tmp >>= 1;
1850
1851 if (!(ru_index_tmp & 1))
1852 continue;
1853
1854 high_th = iwl_mvm_he_get_ppe_val(ppe, ppe_pos_bit);
1855 ppe_pos_bit += IEEE80211_PPE_THRES_INFO_PPET_SIZE;
1856 low_th = iwl_mvm_he_get_ppe_val(ppe, ppe_pos_bit);
1857 ppe_pos_bit += IEEE80211_PPE_THRES_INFO_PPET_SIZE;
1858
1859 pkt_ext->pkt_ext_qam_th[i][bw][0] = low_th;
1860 pkt_ext->pkt_ext_qam_th[i][bw][1] = high_th;
1861 }
1862 }
1863 }
1864
iwl_mvm_set_pkt_ext_from_he_ppe(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct iwl_he_pkt_ext_v2 * pkt_ext)1865 static void iwl_mvm_set_pkt_ext_from_he_ppe(struct iwl_mvm *mvm,
1866 struct ieee80211_sta *sta,
1867 struct iwl_he_pkt_ext_v2 *pkt_ext)
1868 {
1869 u8 nss = (sta->deflink.he_cap.ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) + 1;
1870 u8 *ppe = &sta->deflink.he_cap.ppe_thres[0];
1871 u8 ru_index_bitmap =
1872 u8_get_bits(*ppe,
1873 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
1874 /* Starting after PPE header */
1875 u8 ppe_pos_bit = IEEE80211_HE_PPE_THRES_INFO_HEADER_SIZE;
1876
1877 iwl_mvm_parse_ppe(mvm, pkt_ext, nss, ru_index_bitmap, ppe, ppe_pos_bit);
1878 }
1879
iwl_mvm_set_pkt_ext_from_nominal_padding(struct iwl_he_pkt_ext_v2 * pkt_ext,u8 nominal_padding,u32 * flags)1880 static void iwl_mvm_set_pkt_ext_from_nominal_padding(struct iwl_he_pkt_ext_v2 *pkt_ext,
1881 u8 nominal_padding,
1882 u32 *flags)
1883 {
1884 int low_th = -1;
1885 int high_th = -1;
1886 int i;
1887
1888 switch (nominal_padding) {
1889 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_0US:
1890 low_th = IWL_HE_PKT_EXT_NONE;
1891 high_th = IWL_HE_PKT_EXT_NONE;
1892 break;
1893 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_8US:
1894 low_th = IWL_HE_PKT_EXT_BPSK;
1895 high_th = IWL_HE_PKT_EXT_NONE;
1896 break;
1897 case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_16US:
1898 low_th = IWL_HE_PKT_EXT_NONE;
1899 high_th = IWL_HE_PKT_EXT_BPSK;
1900 break;
1901 }
1902
1903 /* Set the PPE thresholds accordingly */
1904 if (low_th >= 0 && high_th >= 0) {
1905 for (i = 0; i < MAX_HE_SUPP_NSS; i++) {
1906 u8 bw;
1907
1908 for (bw = 0;
1909 bw < ARRAY_SIZE(pkt_ext->pkt_ext_qam_th[i]);
1910 bw++) {
1911 pkt_ext->pkt_ext_qam_th[i][bw][0] = low_th;
1912 pkt_ext->pkt_ext_qam_th[i][bw][1] = high_th;
1913 }
1914 }
1915
1916 *flags |= STA_CTXT_HE_PACKET_EXT;
1917 }
1918 }
1919
iwl_mvm_cfg_he_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u8 sta_id)1920 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm,
1921 struct ieee80211_vif *vif, u8 sta_id)
1922 {
1923 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1924 struct iwl_he_sta_context_cmd_v3 sta_ctxt_cmd = {
1925 .sta_id = sta_id,
1926 .tid_limit = IWL_MAX_TID_COUNT,
1927 .bss_color = vif->bss_conf.he_bss_color.color,
1928 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext,
1929 .frame_time_rts_th =
1930 cpu_to_le16(vif->bss_conf.frame_time_rts_th),
1931 };
1932 struct iwl_he_sta_context_cmd_v2 sta_ctxt_cmd_v2 = {};
1933 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, STA_HE_CTXT_CMD);
1934 u8 ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 2);
1935 int size;
1936 struct ieee80211_sta *sta;
1937 u32 flags;
1938 int i;
1939 const struct ieee80211_sta_he_cap *own_he_cap = NULL;
1940 struct ieee80211_chanctx_conf *chanctx_conf;
1941 const struct ieee80211_supported_band *sband;
1942 void *cmd;
1943
1944 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_MBSSID_HE))
1945 ver = 1;
1946
1947 switch (ver) {
1948 case 1:
1949 /* same layout as v2 except some data at the end */
1950 cmd = &sta_ctxt_cmd_v2;
1951 size = sizeof(struct iwl_he_sta_context_cmd_v1);
1952 break;
1953 case 2:
1954 cmd = &sta_ctxt_cmd_v2;
1955 size = sizeof(struct iwl_he_sta_context_cmd_v2);
1956 break;
1957 case 3:
1958 cmd = &sta_ctxt_cmd;
1959 size = sizeof(struct iwl_he_sta_context_cmd_v3);
1960 break;
1961 default:
1962 IWL_ERR(mvm, "bad STA_HE_CTXT_CMD version %d\n", ver);
1963 return;
1964 }
1965
1966 rcu_read_lock();
1967
1968 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
1969 if (WARN_ON(!chanctx_conf)) {
1970 rcu_read_unlock();
1971 return;
1972 }
1973
1974 sband = mvm->hw->wiphy->bands[chanctx_conf->def.chan->band];
1975 own_he_cap = ieee80211_get_he_iftype_cap(sband,
1976 ieee80211_vif_type_p2p(vif));
1977
1978 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]);
1979 if (IS_ERR_OR_NULL(sta)) {
1980 rcu_read_unlock();
1981 WARN(1, "Can't find STA to configure HE\n");
1982 return;
1983 }
1984
1985 if (!sta->deflink.he_cap.has_he) {
1986 rcu_read_unlock();
1987 return;
1988 }
1989
1990 flags = 0;
1991
1992 /* Block 26-tone RU OFDMA transmissions */
1993 if (mvmvif->he_ru_2mhz_block)
1994 flags |= STA_CTXT_HE_RU_2MHZ_BLOCK;
1995
1996 /* HTC flags */
1997 if (sta->deflink.he_cap.he_cap_elem.mac_cap_info[0] &
1998 IEEE80211_HE_MAC_CAP0_HTC_HE)
1999 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT);
2000 if ((sta->deflink.he_cap.he_cap_elem.mac_cap_info[1] &
2001 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) ||
2002 (sta->deflink.he_cap.he_cap_elem.mac_cap_info[2] &
2003 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) {
2004 u8 link_adap =
2005 ((sta->deflink.he_cap.he_cap_elem.mac_cap_info[2] &
2006 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) +
2007 (sta->deflink.he_cap.he_cap_elem.mac_cap_info[1] &
2008 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION);
2009
2010 if (link_adap == 2)
2011 sta_ctxt_cmd.htc_flags |=
2012 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED);
2013 else if (link_adap == 3)
2014 sta_ctxt_cmd.htc_flags |=
2015 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH);
2016 }
2017 if (sta->deflink.he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR)
2018 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP);
2019 if (sta->deflink.he_cap.he_cap_elem.mac_cap_info[3] &
2020 IEEE80211_HE_MAC_CAP3_OMI_CONTROL)
2021 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP);
2022 if (sta->deflink.he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR)
2023 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP);
2024
2025 /*
2026 * Initialize the PPE thresholds to "None" (7), as described in Table
2027 * 9-262ac of 80211.ax/D3.0.
2028 */
2029 memset(&sta_ctxt_cmd.pkt_ext, IWL_HE_PKT_EXT_NONE,
2030 sizeof(sta_ctxt_cmd.pkt_ext));
2031
2032 /* If PPE Thresholds exist, parse them into a FW-familiar format. */
2033 if (sta->deflink.he_cap.he_cap_elem.phy_cap_info[6] &
2034 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) {
2035 iwl_mvm_set_pkt_ext_from_he_ppe(mvm, sta,
2036 &sta_ctxt_cmd.pkt_ext);
2037 flags |= STA_CTXT_HE_PACKET_EXT;
2038 /* PPE Thresholds doesn't exist - set the API PPE values
2039 * according to Common Nominal Packet Padding fiels. */
2040 } else {
2041 u8 nominal_padding =
2042 u8_get_bits(sta->deflink.he_cap.he_cap_elem.phy_cap_info[9],
2043 IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_MASK);
2044 if (nominal_padding != IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_RESERVED)
2045 iwl_mvm_set_pkt_ext_from_nominal_padding(&sta_ctxt_cmd.pkt_ext,
2046 nominal_padding,
2047 &flags);
2048 }
2049
2050 if (sta->deflink.he_cap.he_cap_elem.mac_cap_info[2] &
2051 IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP)
2052 flags |= STA_CTXT_HE_32BIT_BA_BITMAP;
2053
2054 if (sta->deflink.he_cap.he_cap_elem.mac_cap_info[2] &
2055 IEEE80211_HE_MAC_CAP2_ACK_EN)
2056 flags |= STA_CTXT_HE_ACK_ENABLED;
2057
2058 rcu_read_unlock();
2059
2060 /* Mark MU EDCA as enabled, unless none detected on some AC */
2061 flags |= STA_CTXT_HE_MU_EDCA_CW;
2062 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
2063 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca =
2064 &mvmvif->queue_params[i].mu_edca_param_rec;
2065 u8 ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
2066
2067 if (!mvmvif->queue_params[i].mu_edca) {
2068 flags &= ~STA_CTXT_HE_MU_EDCA_CW;
2069 break;
2070 }
2071
2072 sta_ctxt_cmd.trig_based_txf[ac].cwmin =
2073 cpu_to_le16(mu_edca->ecw_min_max & 0xf);
2074 sta_ctxt_cmd.trig_based_txf[ac].cwmax =
2075 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4);
2076 sta_ctxt_cmd.trig_based_txf[ac].aifsn =
2077 cpu_to_le16(mu_edca->aifsn);
2078 sta_ctxt_cmd.trig_based_txf[ac].mu_time =
2079 cpu_to_le16(mu_edca->mu_edca_timer);
2080 }
2081
2082
2083 if (vif->bss_conf.uora_exists) {
2084 flags |= STA_CTXT_HE_TRIG_RND_ALLOC;
2085
2086 sta_ctxt_cmd.rand_alloc_ecwmin =
2087 vif->bss_conf.uora_ocw_range & 0x7;
2088 sta_ctxt_cmd.rand_alloc_ecwmax =
2089 (vif->bss_conf.uora_ocw_range >> 3) & 0x7;
2090 }
2091
2092 if (own_he_cap && !(own_he_cap->he_cap_elem.mac_cap_info[2] &
2093 IEEE80211_HE_MAC_CAP2_ACK_EN))
2094 flags |= STA_CTXT_HE_NIC_NOT_ACK_ENABLED;
2095
2096 if (vif->bss_conf.nontransmitted) {
2097 flags |= STA_CTXT_HE_REF_BSSID_VALID;
2098 ether_addr_copy(sta_ctxt_cmd.ref_bssid_addr,
2099 vif->bss_conf.transmitter_bssid);
2100 sta_ctxt_cmd.max_bssid_indicator =
2101 vif->bss_conf.bssid_indicator;
2102 sta_ctxt_cmd.bssid_index = vif->bss_conf.bssid_index;
2103 sta_ctxt_cmd.ema_ap = vif->bss_conf.ema_ap;
2104 sta_ctxt_cmd.profile_periodicity =
2105 vif->bss_conf.profile_periodicity;
2106 }
2107
2108 sta_ctxt_cmd.flags = cpu_to_le32(flags);
2109
2110 if (ver < 3) {
2111 /* fields before pkt_ext */
2112 BUILD_BUG_ON(offsetof(typeof(sta_ctxt_cmd), pkt_ext) !=
2113 offsetof(typeof(sta_ctxt_cmd_v2), pkt_ext));
2114 memcpy(&sta_ctxt_cmd_v2, &sta_ctxt_cmd,
2115 offsetof(typeof(sta_ctxt_cmd), pkt_ext));
2116
2117 /* pkt_ext */
2118 for (i = 0;
2119 i < ARRAY_SIZE(sta_ctxt_cmd_v2.pkt_ext.pkt_ext_qam_th);
2120 i++) {
2121 u8 bw;
2122
2123 for (bw = 0;
2124 bw < ARRAY_SIZE(sta_ctxt_cmd_v2.pkt_ext.pkt_ext_qam_th[i]);
2125 bw++) {
2126 BUILD_BUG_ON(sizeof(sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw]) !=
2127 sizeof(sta_ctxt_cmd_v2.pkt_ext.pkt_ext_qam_th[i][bw]));
2128
2129 memcpy(&sta_ctxt_cmd_v2.pkt_ext.pkt_ext_qam_th[i][bw],
2130 &sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw],
2131 sizeof(sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw]));
2132 }
2133 }
2134
2135 /* fields after pkt_ext */
2136 BUILD_BUG_ON(sizeof(sta_ctxt_cmd) -
2137 offsetofend(typeof(sta_ctxt_cmd), pkt_ext) !=
2138 sizeof(sta_ctxt_cmd_v2) -
2139 offsetofend(typeof(sta_ctxt_cmd_v2), pkt_ext));
2140 memcpy((u8 *)&sta_ctxt_cmd_v2 +
2141 offsetofend(typeof(sta_ctxt_cmd_v2), pkt_ext),
2142 (u8 *)&sta_ctxt_cmd +
2143 offsetofend(typeof(sta_ctxt_cmd), pkt_ext),
2144 sizeof(sta_ctxt_cmd) -
2145 offsetofend(typeof(sta_ctxt_cmd), pkt_ext));
2146 sta_ctxt_cmd_v2.reserved3 = 0;
2147 }
2148
2149 if (iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, size, cmd))
2150 IWL_ERR(mvm, "Failed to config FW to work HE!\n");
2151 }
2152
iwl_mvm_protect_assoc(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 duration_override)2153 static void iwl_mvm_protect_assoc(struct iwl_mvm *mvm,
2154 struct ieee80211_vif *vif,
2155 u32 duration_override)
2156 {
2157 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2158 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2159
2160 if (duration_override > duration)
2161 duration = duration_override;
2162
2163 /* Try really hard to protect the session and hear a beacon
2164 * The new session protection command allows us to protect the
2165 * session for a much longer time since the firmware will internally
2166 * create two events: a 300TU one with a very high priority that
2167 * won't be fragmented which should be enough for 99% of the cases,
2168 * and another one (which we configure here to be 900TU long) which
2169 * will have a slightly lower priority, but more importantly, can be
2170 * fragmented so that it'll allow other activities to run.
2171 */
2172 if (fw_has_capa(&mvm->fw->ucode_capa,
2173 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD))
2174 iwl_mvm_schedule_session_protection(mvm, vif, 900,
2175 min_duration, false);
2176 else
2177 iwl_mvm_protect_session(mvm, vif, duration,
2178 min_duration, 500, false);
2179 }
2180
iwl_mvm_bss_info_changed_station(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u64 changes)2181 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2182 struct ieee80211_vif *vif,
2183 struct ieee80211_bss_conf *bss_conf,
2184 u64 changes)
2185 {
2186 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2187 int ret;
2188
2189 /*
2190 * Re-calculate the tsf id, as the leader-follower relations depend
2191 * on the beacon interval, which was not known when the station
2192 * interface was added.
2193 */
2194 if (changes & BSS_CHANGED_ASSOC && vif->cfg.assoc) {
2195 if (vif->bss_conf.he_support &&
2196 !iwlwifi_mod_params.disable_11ax)
2197 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
2198
2199 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2200 }
2201
2202 /* Update MU EDCA params */
2203 if (changes & BSS_CHANGED_QOS && mvmvif->associated &&
2204 vif->cfg.assoc && vif->bss_conf.he_support &&
2205 !iwlwifi_mod_params.disable_11ax)
2206 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
2207
2208 /*
2209 * If we're not associated yet, take the (new) BSSID before associating
2210 * so the firmware knows. If we're already associated, then use the old
2211 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2212 * branch for disassociation below.
2213 */
2214 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2215 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2216
2217 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2218 if (ret)
2219 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2220
2221 /* after sending it once, adopt mac80211 data */
2222 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2223 mvmvif->associated = vif->cfg.assoc;
2224
2225 if (changes & BSS_CHANGED_ASSOC) {
2226 if (vif->cfg.assoc) {
2227 /* clear statistics to get clean beacon counter */
2228 iwl_mvm_request_statistics(mvm, true);
2229 memset(&mvmvif->beacon_stats, 0,
2230 sizeof(mvmvif->beacon_stats));
2231
2232 /* add quota for this interface */
2233 ret = iwl_mvm_update_quotas(mvm, true, NULL);
2234 if (ret) {
2235 IWL_ERR(mvm, "failed to update quotas\n");
2236 return;
2237 }
2238
2239 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2240 &mvm->status) &&
2241 !fw_has_capa(&mvm->fw->ucode_capa,
2242 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) {
2243 /*
2244 * If we're restarting then the firmware will
2245 * obviously have lost synchronisation with
2246 * the AP. It will attempt to synchronise by
2247 * itself, but we can make it more reliable by
2248 * scheduling a session protection time event.
2249 *
2250 * The firmware needs to receive a beacon to
2251 * catch up with synchronisation, use 110% of
2252 * the beacon interval.
2253 *
2254 * Set a large maximum delay to allow for more
2255 * than a single interface.
2256 *
2257 * For new firmware versions, rely on the
2258 * firmware. This is relevant for DCM scenarios
2259 * only anyway.
2260 */
2261 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2262 iwl_mvm_protect_session(mvm, vif, dur, dur,
2263 5 * dur, false);
2264 } else if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2265 &mvm->status) &&
2266 !vif->bss_conf.dtim_period) {
2267 /*
2268 * If we're not restarting and still haven't
2269 * heard a beacon (dtim period unknown) then
2270 * make sure we still have enough minimum time
2271 * remaining in the time event, since the auth
2272 * might actually have taken quite a while
2273 * (especially for SAE) and so the remaining
2274 * time could be small without us having heard
2275 * a beacon yet.
2276 */
2277 iwl_mvm_protect_assoc(mvm, vif, 0);
2278 }
2279
2280 iwl_mvm_sf_update(mvm, vif, false);
2281 iwl_mvm_power_vif_assoc(mvm, vif);
2282 if (vif->p2p) {
2283 iwl_mvm_update_smps(mvm, vif,
2284 IWL_MVM_SMPS_REQ_PROT,
2285 IEEE80211_SMPS_DYNAMIC);
2286 }
2287 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
2288 iwl_mvm_mei_host_disassociated(mvm);
2289 /*
2290 * If update fails - SF might be running in associated
2291 * mode while disassociated - which is forbidden.
2292 */
2293 ret = iwl_mvm_sf_update(mvm, vif, false);
2294 WARN_ONCE(ret &&
2295 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
2296 &mvm->status),
2297 "Failed to update SF upon disassociation\n");
2298
2299 /*
2300 * If we get an assert during the connection (after the
2301 * station has been added, but before the vif is set
2302 * to associated), mac80211 will re-add the station and
2303 * then configure the vif. Since the vif is not
2304 * associated, we would remove the station here and
2305 * this would fail the recovery.
2306 */
2307 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2308 &mvm->status)) {
2309 /*
2310 * Remove AP station now that
2311 * the MAC is unassoc
2312 */
2313 ret = iwl_mvm_rm_sta_id(mvm, vif,
2314 mvmvif->ap_sta_id);
2315 if (ret)
2316 IWL_ERR(mvm,
2317 "failed to remove AP station\n");
2318
2319 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
2320 }
2321
2322 /* remove quota for this interface */
2323 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2324 if (ret)
2325 IWL_ERR(mvm, "failed to update quotas\n");
2326
2327 /* this will take the cleared BSSID from bss_conf */
2328 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2329 if (ret)
2330 IWL_ERR(mvm,
2331 "failed to update MAC %pM (clear after unassoc)\n",
2332 vif->addr);
2333 }
2334
2335 /*
2336 * The firmware tracks the MU-MIMO group on its own.
2337 * However, on HW restart we should restore this data.
2338 */
2339 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2340 (changes & BSS_CHANGED_MU_GROUPS) && vif->bss_conf.mu_mimo_owner) {
2341 ret = iwl_mvm_update_mu_groups(mvm, vif);
2342 if (ret)
2343 IWL_ERR(mvm,
2344 "failed to update VHT MU_MIMO groups\n");
2345 }
2346
2347 iwl_mvm_recalc_multicast(mvm);
2348
2349 /* reset rssi values */
2350 mvmvif->bf_data.ave_beacon_signal = 0;
2351
2352 iwl_mvm_bt_coex_vif_change(mvm);
2353 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2354 IEEE80211_SMPS_AUTOMATIC);
2355 if (fw_has_capa(&mvm->fw->ucode_capa,
2356 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2357 iwl_mvm_config_scan(mvm);
2358 }
2359
2360 if (changes & BSS_CHANGED_BEACON_INFO) {
2361 /*
2362 * We received a beacon from the associated AP so
2363 * remove the session protection.
2364 */
2365 iwl_mvm_stop_session_protection(mvm, vif);
2366
2367 iwl_mvm_sf_update(mvm, vif, false);
2368 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2369 }
2370
2371 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2372 /*
2373 * Send power command on every beacon change,
2374 * because we may have not enabled beacon abort yet.
2375 */
2376 BSS_CHANGED_BEACON_INFO)) {
2377 ret = iwl_mvm_power_update_mac(mvm);
2378 if (ret)
2379 IWL_ERR(mvm, "failed to update power mode\n");
2380 }
2381
2382 if (changes & BSS_CHANGED_CQM) {
2383 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2384 /* reset cqm events tracking */
2385 mvmvif->bf_data.last_cqm_event = 0;
2386 if (mvmvif->bf_data.bf_enabled) {
2387 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2388 if (ret)
2389 IWL_ERR(mvm,
2390 "failed to update CQM thresholds\n");
2391 }
2392 }
2393
2394 if (changes & BSS_CHANGED_BANDWIDTH)
2395 iwl_mvm_apply_fw_smps_request(vif);
2396 }
2397
iwl_mvm_start_ap_ibss(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf)2398 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2399 struct ieee80211_vif *vif,
2400 struct ieee80211_bss_conf *link_conf)
2401 {
2402 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2403 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2404 int ret, i;
2405
2406 mutex_lock(&mvm->mutex);
2407
2408 /* Send the beacon template */
2409 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2410 if (ret)
2411 goto out_unlock;
2412
2413 /*
2414 * Re-calculate the tsf id, as the leader-follower relations depend on
2415 * the beacon interval, which was not known when the AP interface
2416 * was added.
2417 */
2418 if (vif->type == NL80211_IFTYPE_AP)
2419 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2420
2421 mvmvif->ap_assoc_sta_count = 0;
2422
2423 /* Add the mac context */
2424 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2425 if (ret)
2426 goto out_unlock;
2427
2428 /* Perform the binding */
2429 ret = iwl_mvm_binding_add_vif(mvm, vif);
2430 if (ret)
2431 goto out_remove;
2432
2433 /*
2434 * This is not very nice, but the simplest:
2435 * For older FWs adding the mcast sta before the bcast station may
2436 * cause assert 0x2b00.
2437 * This is fixed in later FW so make the order of removal depend on
2438 * the TLV
2439 */
2440 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2441 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2442 if (ret)
2443 goto out_unbind;
2444 /*
2445 * Send the bcast station. At this stage the TBTT and DTIM time
2446 * events are added and applied to the scheduler
2447 */
2448 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2449 if (ret) {
2450 iwl_mvm_rm_mcast_sta(mvm, vif);
2451 goto out_unbind;
2452 }
2453 } else {
2454 /*
2455 * Send the bcast station. At this stage the TBTT and DTIM time
2456 * events are added and applied to the scheduler
2457 */
2458 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2459 if (ret)
2460 goto out_unbind;
2461 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2462 if (ret) {
2463 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2464 goto out_unbind;
2465 }
2466 }
2467
2468 /* must be set before quota calculations */
2469 mvmvif->ap_ibss_active = true;
2470
2471 /* send all the early keys to the device now */
2472 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) {
2473 struct ieee80211_key_conf *key = mvmvif->ap_early_keys[i];
2474
2475 if (!key)
2476 continue;
2477
2478 mvmvif->ap_early_keys[i] = NULL;
2479
2480 ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key);
2481 if (ret)
2482 goto out_quota_failed;
2483 }
2484
2485 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) {
2486 iwl_mvm_vif_set_low_latency(mvmvif, true,
2487 LOW_LATENCY_VIF_TYPE);
2488 iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id);
2489 }
2490
2491 /* power updated needs to be done before quotas */
2492 iwl_mvm_power_update_mac(mvm);
2493
2494 ret = iwl_mvm_update_quotas(mvm, false, NULL);
2495 if (ret)
2496 goto out_quota_failed;
2497
2498 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2499 if (vif->p2p && mvm->p2p_device_vif)
2500 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2501
2502 iwl_mvm_bt_coex_vif_change(mvm);
2503
2504 /* we don't support TDLS during DCM */
2505 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2506 iwl_mvm_teardown_tdls_peers(mvm);
2507
2508 iwl_mvm_ftm_restart_responder(mvm, vif);
2509
2510 goto out_unlock;
2511
2512 out_quota_failed:
2513 iwl_mvm_power_update_mac(mvm);
2514 mvmvif->ap_ibss_active = false;
2515 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2516 iwl_mvm_rm_mcast_sta(mvm, vif);
2517 out_unbind:
2518 iwl_mvm_binding_remove_vif(mvm, vif);
2519 out_remove:
2520 iwl_mvm_mac_ctxt_remove(mvm, vif);
2521 out_unlock:
2522 mutex_unlock(&mvm->mutex);
2523 return ret;
2524 }
2525
iwl_mvm_start_ap(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf)2526 static int iwl_mvm_start_ap(struct ieee80211_hw *hw,
2527 struct ieee80211_vif *vif,
2528 struct ieee80211_bss_conf *link_conf)
2529 {
2530 return iwl_mvm_start_ap_ibss(hw, vif, link_conf);
2531 }
2532
iwl_mvm_start_ibss(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2533 static int iwl_mvm_start_ibss(struct ieee80211_hw *hw,
2534 struct ieee80211_vif *vif)
2535 {
2536 return iwl_mvm_start_ap_ibss(hw, vif, &vif->bss_conf);
2537 }
2538
iwl_mvm_stop_ap_ibss(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf)2539 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2540 struct ieee80211_vif *vif,
2541 struct ieee80211_bss_conf *link_conf)
2542 {
2543 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2544 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2545
2546 iwl_mvm_prepare_mac_removal(mvm, vif);
2547
2548 mutex_lock(&mvm->mutex);
2549
2550 /* Handle AP stop while in CSA */
2551 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2552 iwl_mvm_remove_time_event(mvm, mvmvif,
2553 &mvmvif->time_event_data);
2554 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2555 mvmvif->csa_countdown = false;
2556 }
2557
2558 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2559 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2560 mvm->csa_tx_block_bcn_timeout = 0;
2561 }
2562
2563 mvmvif->ap_ibss_active = false;
2564 mvm->ap_last_beacon_gp2 = 0;
2565
2566 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) {
2567 iwl_mvm_vif_set_low_latency(mvmvif, false,
2568 LOW_LATENCY_VIF_TYPE);
2569 iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id);
2570 }
2571
2572 iwl_mvm_bt_coex_vif_change(mvm);
2573
2574 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2575 if (vif->p2p && mvm->p2p_device_vif)
2576 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2577
2578 iwl_mvm_update_quotas(mvm, false, NULL);
2579
2580 iwl_mvm_ftm_responder_clear(mvm, vif);
2581
2582 /*
2583 * This is not very nice, but the simplest:
2584 * For older FWs removing the mcast sta before the bcast station may
2585 * cause assert 0x2b00.
2586 * This is fixed in later FW (which will stop beaconing when removing
2587 * bcast station).
2588 * So make the order of removal depend on the TLV
2589 */
2590 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2591 iwl_mvm_rm_mcast_sta(mvm, vif);
2592 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2593 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2594 iwl_mvm_rm_mcast_sta(mvm, vif);
2595 iwl_mvm_binding_remove_vif(mvm, vif);
2596
2597 iwl_mvm_power_update_mac(mvm);
2598
2599 iwl_mvm_mac_ctxt_remove(mvm, vif);
2600
2601 mutex_unlock(&mvm->mutex);
2602 }
2603
iwl_mvm_stop_ap(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf)2604 static void iwl_mvm_stop_ap(struct ieee80211_hw *hw,
2605 struct ieee80211_vif *vif,
2606 struct ieee80211_bss_conf *link_conf)
2607 {
2608 iwl_mvm_stop_ap_ibss(hw, vif, link_conf);
2609 }
2610
iwl_mvm_stop_ibss(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2611 static void iwl_mvm_stop_ibss(struct ieee80211_hw *hw,
2612 struct ieee80211_vif *vif)
2613 {
2614 iwl_mvm_stop_ap_ibss(hw, vif, &vif->bss_conf);
2615 }
2616
2617 static void
iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u64 changes)2618 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2619 struct ieee80211_vif *vif,
2620 struct ieee80211_bss_conf *bss_conf,
2621 u64 changes)
2622 {
2623 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2624
2625 /* Changes will be applied when the AP/IBSS is started */
2626 if (!mvmvif->ap_ibss_active)
2627 return;
2628
2629 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2630 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2631 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2632 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2633
2634 /* Need to send a new beacon template to the FW */
2635 if (changes & BSS_CHANGED_BEACON &&
2636 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2637 IWL_WARN(mvm, "Failed updating beacon data\n");
2638
2639 if (changes & BSS_CHANGED_FTM_RESPONDER) {
2640 int ret = iwl_mvm_ftm_start_responder(mvm, vif);
2641
2642 if (ret)
2643 IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n",
2644 ret);
2645 }
2646
2647 }
2648
iwl_mvm_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u64 changes)2649 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2650 struct ieee80211_vif *vif,
2651 struct ieee80211_bss_conf *bss_conf,
2652 u64 changes)
2653 {
2654 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2655
2656 mutex_lock(&mvm->mutex);
2657
2658 if (changes & BSS_CHANGED_IDLE && !vif->cfg.idle)
2659 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2660
2661 switch (vif->type) {
2662 case NL80211_IFTYPE_STATION:
2663 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2664 break;
2665 case NL80211_IFTYPE_AP:
2666 case NL80211_IFTYPE_ADHOC:
2667 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2668 break;
2669 case NL80211_IFTYPE_MONITOR:
2670 if (changes & BSS_CHANGED_MU_GROUPS)
2671 iwl_mvm_update_mu_groups(mvm, vif);
2672 break;
2673 default:
2674 /* shouldn't happen */
2675 WARN_ON_ONCE(1);
2676 }
2677
2678 if (changes & BSS_CHANGED_TXPOWER) {
2679 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d dBm\n",
2680 bss_conf->txpower);
2681 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2682 }
2683
2684 mutex_unlock(&mvm->mutex);
2685 }
2686
iwl_mvm_mac_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_scan_request * hw_req)2687 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2688 struct ieee80211_vif *vif,
2689 struct ieee80211_scan_request *hw_req)
2690 {
2691 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2692 int ret;
2693
2694 if (hw_req->req.n_channels == 0 ||
2695 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2696 return -EINVAL;
2697
2698 mutex_lock(&mvm->mutex);
2699 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2700 mutex_unlock(&mvm->mutex);
2701
2702 return ret;
2703 }
2704
iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2705 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2706 struct ieee80211_vif *vif)
2707 {
2708 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2709
2710 mutex_lock(&mvm->mutex);
2711
2712 /* Due to a race condition, it's possible that mac80211 asks
2713 * us to stop a hw_scan when it's already stopped. This can
2714 * happen, for instance, if we stopped the scan ourselves,
2715 * called ieee80211_scan_completed() and the userspace called
2716 * cancel scan scan before ieee80211_scan_work() could run.
2717 * To handle that, simply return if the scan is not running.
2718 */
2719 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2720 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2721
2722 mutex_unlock(&mvm->mutex);
2723 }
2724
2725 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)2726 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2727 struct ieee80211_sta *sta, u16 tids,
2728 int num_frames,
2729 enum ieee80211_frame_release_type reason,
2730 bool more_data)
2731 {
2732 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2733
2734 /* Called when we need to transmit (a) frame(s) from mac80211 */
2735
2736 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2737 tids, more_data, false);
2738 }
2739
2740 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)2741 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2742 struct ieee80211_sta *sta, u16 tids,
2743 int num_frames,
2744 enum ieee80211_frame_release_type reason,
2745 bool more_data)
2746 {
2747 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2748
2749 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2750
2751 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2752 tids, more_data, true);
2753 }
2754
__iwl_mvm_mac_sta_notify(struct ieee80211_hw * hw,enum sta_notify_cmd cmd,struct ieee80211_sta * sta)2755 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2756 enum sta_notify_cmd cmd,
2757 struct ieee80211_sta *sta)
2758 {
2759 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2760 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2761 unsigned long txqs = 0, tids = 0;
2762 int tid;
2763
2764 /*
2765 * If we have TVQM then we get too high queue numbers - luckily
2766 * we really shouldn't get here with that because such hardware
2767 * should have firmware supporting buffer station offload.
2768 */
2769 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
2770 return;
2771
2772 spin_lock_bh(&mvmsta->lock);
2773 for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) {
2774 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2775
2776 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2777 continue;
2778
2779 __set_bit(tid_data->txq_id, &txqs);
2780
2781 if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2782 continue;
2783
2784 __set_bit(tid, &tids);
2785 }
2786
2787 switch (cmd) {
2788 case STA_NOTIFY_SLEEP:
2789 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2790 ieee80211_sta_set_buffered(sta, tid, true);
2791
2792 if (txqs)
2793 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2794 /*
2795 * The fw updates the STA to be asleep. Tx packets on the Tx
2796 * queues to this station will not be transmitted. The fw will
2797 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2798 */
2799 break;
2800 case STA_NOTIFY_AWAKE:
2801 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2802 break;
2803
2804 if (txqs)
2805 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2806 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2807 break;
2808 default:
2809 break;
2810 }
2811 spin_unlock_bh(&mvmsta->lock);
2812 }
2813
iwl_mvm_mac_sta_notify(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum sta_notify_cmd cmd,struct ieee80211_sta * sta)2814 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2815 struct ieee80211_vif *vif,
2816 enum sta_notify_cmd cmd,
2817 struct ieee80211_sta *sta)
2818 {
2819 __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2820 }
2821
iwl_mvm_sta_pm_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)2822 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2823 {
2824 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2825 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2826 struct ieee80211_sta *sta;
2827 struct iwl_mvm_sta *mvmsta;
2828 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2829
2830 if (WARN_ON(notif->sta_id >= mvm->fw->ucode_capa.num_stations))
2831 return;
2832
2833 rcu_read_lock();
2834 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2835 if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2836 rcu_read_unlock();
2837 return;
2838 }
2839
2840 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2841
2842 if (!mvmsta->vif ||
2843 mvmsta->vif->type != NL80211_IFTYPE_AP) {
2844 rcu_read_unlock();
2845 return;
2846 }
2847
2848 if (mvmsta->sleeping != sleeping) {
2849 mvmsta->sleeping = sleeping;
2850 __iwl_mvm_mac_sta_notify(mvm->hw,
2851 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2852 sta);
2853 ieee80211_sta_ps_transition(sta, sleeping);
2854 }
2855
2856 if (sleeping) {
2857 switch (notif->type) {
2858 case IWL_MVM_PM_EVENT_AWAKE:
2859 case IWL_MVM_PM_EVENT_ASLEEP:
2860 break;
2861 case IWL_MVM_PM_EVENT_UAPSD:
2862 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2863 break;
2864 case IWL_MVM_PM_EVENT_PS_POLL:
2865 ieee80211_sta_pspoll(sta);
2866 break;
2867 default:
2868 break;
2869 }
2870 }
2871
2872 rcu_read_unlock();
2873 }
2874
iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)2875 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2876 struct ieee80211_vif *vif,
2877 struct ieee80211_sta *sta)
2878 {
2879 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2880 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2881
2882 /*
2883 * This is called before mac80211 does RCU synchronisation,
2884 * so here we already invalidate our internal RCU-protected
2885 * station pointer. The rest of the code will thus no longer
2886 * be able to find the station this way, and we don't rely
2887 * on further RCU synchronisation after the sta_state()
2888 * callback deleted the station.
2889 */
2890 mutex_lock(&mvm->mutex);
2891 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2892 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2893 ERR_PTR(-ENOENT));
2894
2895 mutex_unlock(&mvm->mutex);
2896 }
2897
iwl_mvm_check_uapsd(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const u8 * bssid)2898 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2899 const u8 *bssid)
2900 {
2901 int i;
2902
2903 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
2904 struct iwl_mvm_tcm_mac *mdata;
2905
2906 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id];
2907 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
2908 mdata->opened_rx_ba_sessions = false;
2909 }
2910
2911 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2912 return;
2913
2914 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2915 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2916 return;
2917 }
2918
2919 if (!vif->p2p &&
2920 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2921 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2922 return;
2923 }
2924
2925 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) {
2926 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) {
2927 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2928 return;
2929 }
2930 }
2931
2932 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2933 }
2934
2935 static void
iwl_mvm_tdls_check_trigger(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u8 * peer_addr,enum nl80211_tdls_operation action)2936 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2937 struct ieee80211_vif *vif, u8 *peer_addr,
2938 enum nl80211_tdls_operation action)
2939 {
2940 struct iwl_fw_dbg_trigger_tlv *trig;
2941 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2942
2943 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
2944 FW_DBG_TRIGGER_TDLS);
2945 if (!trig)
2946 return;
2947
2948 tdls_trig = (void *)trig->data;
2949
2950 if (!(tdls_trig->action_bitmap & BIT(action)))
2951 return;
2952
2953 if (tdls_trig->peer_mode &&
2954 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2955 return;
2956
2957 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2958 "TDLS event occurred, peer %pM, action %d",
2959 peer_addr, action);
2960 }
2961
2962 struct iwl_mvm_he_obss_narrow_bw_ru_data {
2963 bool tolerated;
2964 };
2965
iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy * wiphy,struct cfg80211_bss * bss,void * _data)2966 static void iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy,
2967 struct cfg80211_bss *bss,
2968 void *_data)
2969 {
2970 struct iwl_mvm_he_obss_narrow_bw_ru_data *data = _data;
2971 const struct cfg80211_bss_ies *ies;
2972 const struct element *elem;
2973
2974 rcu_read_lock();
2975 ies = rcu_dereference(bss->ies);
2976 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, ies->data,
2977 ies->len);
2978
2979 if (!elem || elem->datalen < 10 ||
2980 !(elem->data[10] &
2981 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) {
2982 data->tolerated = false;
2983 }
2984 rcu_read_unlock();
2985 }
2986
iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2987 static void iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw *hw,
2988 struct ieee80211_vif *vif)
2989 {
2990 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2991 struct iwl_mvm_he_obss_narrow_bw_ru_data iter_data = {
2992 .tolerated = true,
2993 };
2994
2995 if (!(vif->bss_conf.chandef.chan->flags & IEEE80211_CHAN_RADAR)) {
2996 mvmvif->he_ru_2mhz_block = false;
2997 return;
2998 }
2999
3000 cfg80211_bss_iter(hw->wiphy, &vif->bss_conf.chandef,
3001 iwl_mvm_check_he_obss_narrow_bw_ru_iter,
3002 &iter_data);
3003
3004 /*
3005 * If there is at least one AP on radar channel that cannot
3006 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU.
3007 */
3008 mvmvif->he_ru_2mhz_block = !iter_data.tolerated;
3009 }
3010
iwl_mvm_reset_cca_40mhz_workaround(struct iwl_mvm * mvm,struct ieee80211_vif * vif)3011 static void iwl_mvm_reset_cca_40mhz_workaround(struct iwl_mvm *mvm,
3012 struct ieee80211_vif *vif)
3013 {
3014 struct ieee80211_supported_band *sband;
3015 const struct ieee80211_sta_he_cap *he_cap;
3016
3017 if (vif->type != NL80211_IFTYPE_STATION)
3018 return;
3019
3020 if (!mvm->cca_40mhz_workaround)
3021 return;
3022
3023 /* decrement and check that we reached zero */
3024 mvm->cca_40mhz_workaround--;
3025 if (mvm->cca_40mhz_workaround)
3026 return;
3027
3028 sband = mvm->hw->wiphy->bands[NL80211_BAND_2GHZ];
3029
3030 sband->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
3031
3032 he_cap = ieee80211_get_he_iftype_cap(sband,
3033 ieee80211_vif_type_p2p(vif));
3034
3035 if (he_cap) {
3036 /* we know that ours is writable */
3037 struct ieee80211_sta_he_cap *he = (void *)(uintptr_t)he_cap;
3038
3039 he->he_cap_elem.phy_cap_info[0] |=
3040 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G;
3041 }
3042 }
3043
iwl_mvm_mei_host_associated(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mvm_sta * mvm_sta)3044 static void iwl_mvm_mei_host_associated(struct iwl_mvm *mvm,
3045 struct ieee80211_vif *vif,
3046 struct iwl_mvm_sta *mvm_sta)
3047 {
3048 #if IS_ENABLED(CONFIG_IWLMEI)
3049 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3050 struct iwl_mei_conn_info conn_info = {
3051 .ssid_len = vif->cfg.ssid_len,
3052 .channel = vif->bss_conf.chandef.chan->hw_value,
3053 };
3054
3055 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3056 return;
3057
3058 if (!mvm->mei_registered)
3059 return;
3060
3061 switch (mvm_sta->pairwise_cipher) {
3062 case WLAN_CIPHER_SUITE_CCMP:
3063 conn_info.pairwise_cipher = IWL_MEI_CIPHER_CCMP;
3064 break;
3065 case WLAN_CIPHER_SUITE_GCMP:
3066 conn_info.pairwise_cipher = IWL_MEI_CIPHER_GCMP;
3067 break;
3068 case WLAN_CIPHER_SUITE_GCMP_256:
3069 conn_info.pairwise_cipher = IWL_MEI_CIPHER_GCMP_256;
3070 break;
3071 case 0:
3072 /* open profile */
3073 break;
3074 default:
3075 /* cipher not supported, don't send anything to iwlmei */
3076 return;
3077 }
3078
3079 switch (mvmvif->rekey_data.akm) {
3080 case WLAN_AKM_SUITE_SAE & 0xff:
3081 conn_info.auth_mode = IWL_MEI_AKM_AUTH_SAE;
3082 break;
3083 case WLAN_AKM_SUITE_PSK & 0xff:
3084 conn_info.auth_mode = IWL_MEI_AKM_AUTH_RSNA_PSK;
3085 break;
3086 case WLAN_AKM_SUITE_8021X & 0xff:
3087 conn_info.auth_mode = IWL_MEI_AKM_AUTH_RSNA;
3088 break;
3089 case 0:
3090 /* open profile */
3091 conn_info.auth_mode = IWL_MEI_AKM_AUTH_OPEN;
3092 break;
3093 default:
3094 /* auth method / AKM not supported */
3095 /* TODO: All the FT vesions of these? */
3096 return;
3097 }
3098
3099 memcpy(conn_info.ssid, vif->cfg.ssid, vif->cfg.ssid_len);
3100 memcpy(conn_info.bssid, vif->bss_conf.bssid, ETH_ALEN);
3101
3102 /* TODO: add support for collocated AP data */
3103 iwl_mei_host_associated(&conn_info, NULL);
3104 #endif
3105 }
3106
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)3107 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
3108 struct ieee80211_vif *vif,
3109 struct ieee80211_sta *sta,
3110 enum ieee80211_sta_state old_state,
3111 enum ieee80211_sta_state new_state)
3112 {
3113 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3114 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3115 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3116 int ret;
3117
3118 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
3119 sta->addr, old_state, new_state);
3120
3121 /* this would be a mac80211 bug ... but don't crash */
3122 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
3123 return test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) ? 0 : -EINVAL;
3124
3125 /*
3126 * If we are in a STA removal flow and in DQA mode:
3127 *
3128 * This is after the sync_rcu part, so the queues have already been
3129 * flushed. No more TXs on their way in mac80211's path, and no more in
3130 * the queues.
3131 * Also, we won't be getting any new TX frames for this station.
3132 * What we might have are deferred TX frames that need to be taken care
3133 * of.
3134 *
3135 * Drop any still-queued deferred-frame before removing the STA, and
3136 * make sure the worker is no longer handling frames for this STA.
3137 */
3138 if (old_state == IEEE80211_STA_NONE &&
3139 new_state == IEEE80211_STA_NOTEXIST) {
3140 flush_work(&mvm->add_stream_wk);
3141
3142 /*
3143 * No need to make sure deferred TX indication is off since the
3144 * worker will already remove it if it was on
3145 */
3146
3147 /*
3148 * Additionally, reset the 40 MHz capability if we disconnected
3149 * from the AP now.
3150 */
3151 iwl_mvm_reset_cca_40mhz_workaround(mvm, vif);
3152 }
3153
3154 mutex_lock(&mvm->mutex);
3155 /* track whether or not the station is associated */
3156 mvm_sta->sta_state = new_state;
3157
3158 if (old_state == IEEE80211_STA_NOTEXIST &&
3159 new_state == IEEE80211_STA_NONE) {
3160 /*
3161 * Firmware bug - it'll crash if the beacon interval is less
3162 * than 16. We can't avoid connecting at all, so refuse the
3163 * station state change, this will cause mac80211 to abandon
3164 * attempts to connect to this AP, and eventually wpa_s will
3165 * blocklist the AP...
3166 */
3167 if (vif->type == NL80211_IFTYPE_STATION &&
3168 vif->bss_conf.beacon_int < 16) {
3169 IWL_ERR(mvm,
3170 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
3171 sta->addr, vif->bss_conf.beacon_int);
3172 ret = -EINVAL;
3173 goto out_unlock;
3174 }
3175
3176 if (vif->type == NL80211_IFTYPE_STATION)
3177 vif->bss_conf.he_support = sta->deflink.he_cap.has_he;
3178
3179 if (sta->tdls &&
3180 (vif->p2p ||
3181 iwl_mvm_tdls_sta_count(mvm, NULL) ==
3182 IWL_MVM_TDLS_STA_COUNT ||
3183 iwl_mvm_phy_ctx_count(mvm) > 1)) {
3184 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
3185 ret = -EBUSY;
3186 goto out_unlock;
3187 }
3188
3189 ret = iwl_mvm_add_sta(mvm, vif, sta);
3190 if (sta->tdls && ret == 0) {
3191 iwl_mvm_recalc_tdls_state(mvm, vif, true);
3192 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3193 NL80211_TDLS_SETUP);
3194 }
3195
3196 sta->deflink.agg.max_rc_amsdu_len = 1;
3197 } else if (old_state == IEEE80211_STA_NONE &&
3198 new_state == IEEE80211_STA_AUTH) {
3199 /*
3200 * EBS may be disabled due to previous failures reported by FW.
3201 * Reset EBS status here assuming environment has been changed.
3202 */
3203 mvm->last_ebs_successful = true;
3204 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
3205 ret = 0;
3206 } else if (old_state == IEEE80211_STA_AUTH &&
3207 new_state == IEEE80211_STA_ASSOC) {
3208 if (vif->type == NL80211_IFTYPE_AP) {
3209 vif->bss_conf.he_support = sta->deflink.he_cap.has_he;
3210 mvmvif->ap_assoc_sta_count++;
3211 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3212 if (vif->bss_conf.he_support &&
3213 !iwlwifi_mod_params.disable_11ax)
3214 iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id);
3215 } else if (vif->type == NL80211_IFTYPE_STATION) {
3216 vif->bss_conf.he_support = sta->deflink.he_cap.has_he;
3217
3218 mvmvif->he_ru_2mhz_block = false;
3219 if (sta->deflink.he_cap.has_he)
3220 iwl_mvm_check_he_obss_narrow_bw_ru(hw, vif);
3221
3222 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3223 }
3224
3225 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3226 false);
3227 ret = iwl_mvm_update_sta(mvm, vif, sta);
3228 } else if (old_state == IEEE80211_STA_ASSOC &&
3229 new_state == IEEE80211_STA_AUTHORIZED) {
3230 ret = 0;
3231
3232 /* we don't support TDLS during DCM */
3233 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3234 iwl_mvm_teardown_tdls_peers(mvm);
3235
3236 if (sta->tdls) {
3237 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3238 NL80211_TDLS_ENABLE_LINK);
3239 } else {
3240 /* enable beacon filtering */
3241 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
3242
3243 mvmvif->authorized = 1;
3244
3245 /*
3246 * Now that the station is authorized, i.e., keys were already
3247 * installed, need to indicate to the FW that
3248 * multicast data frames can be forwarded to the driver
3249 */
3250 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3251 iwl_mvm_mei_host_associated(mvm, vif, mvm_sta);
3252 }
3253
3254 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3255 true);
3256 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
3257 new_state == IEEE80211_STA_ASSOC) {
3258 /* once we move into assoc state, need to update rate scale to
3259 * disable using wide bandwidth
3260 */
3261 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3262 false);
3263 if (!sta->tdls) {
3264 /* Multicast data frames are no longer allowed */
3265 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3266
3267 /*
3268 * Set this after the above iwl_mvm_mac_ctxt_changed()
3269 * to avoid sending high prio again for a little time.
3270 */
3271 mvmvif->authorized = 0;
3272
3273 /* disable beacon filtering */
3274 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3275 WARN_ON(ret &&
3276 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
3277 &mvm->status));
3278 }
3279 ret = 0;
3280 } else if (old_state == IEEE80211_STA_ASSOC &&
3281 new_state == IEEE80211_STA_AUTH) {
3282 if (vif->type == NL80211_IFTYPE_AP) {
3283 mvmvif->ap_assoc_sta_count--;
3284 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3285 } else if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls)
3286 iwl_mvm_stop_session_protection(mvm, vif);
3287 ret = 0;
3288 } else if (old_state == IEEE80211_STA_AUTH &&
3289 new_state == IEEE80211_STA_NONE) {
3290 ret = 0;
3291 } else if (old_state == IEEE80211_STA_NONE &&
3292 new_state == IEEE80211_STA_NOTEXIST) {
3293 if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls)
3294 iwl_mvm_stop_session_protection(mvm, vif);
3295 ret = iwl_mvm_rm_sta(mvm, vif, sta);
3296 if (sta->tdls) {
3297 iwl_mvm_recalc_tdls_state(mvm, vif, false);
3298 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3299 NL80211_TDLS_DISABLE_LINK);
3300 }
3301
3302 if (unlikely(ret &&
3303 test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
3304 &mvm->status)))
3305 ret = 0;
3306 } else {
3307 ret = -EIO;
3308 }
3309 out_unlock:
3310 mutex_unlock(&mvm->mutex);
3311
3312 if (sta->tdls && ret == 0) {
3313 if (old_state == IEEE80211_STA_NOTEXIST &&
3314 new_state == IEEE80211_STA_NONE)
3315 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3316 else if (old_state == IEEE80211_STA_NONE &&
3317 new_state == IEEE80211_STA_NOTEXIST)
3318 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3319 }
3320
3321 return ret;
3322 }
3323
iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw * hw,u32 value)3324 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3325 {
3326 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3327
3328 mvm->rts_threshold = value;
3329
3330 return 0;
3331 }
3332
iwl_mvm_sta_rc_update(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u32 changed)3333 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
3334 struct ieee80211_vif *vif,
3335 struct ieee80211_sta *sta, u32 changed)
3336 {
3337 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3338 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3339
3340 if (changed & (IEEE80211_RC_BW_CHANGED |
3341 IEEE80211_RC_SUPP_RATES_CHANGED |
3342 IEEE80211_RC_NSS_CHANGED))
3343 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3344 true);
3345
3346 if (vif->type == NL80211_IFTYPE_STATION &&
3347 changed & IEEE80211_RC_NSS_CHANGED)
3348 iwl_mvm_sf_update(mvm, vif, false);
3349 }
3350
iwl_mvm_mac_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,unsigned int link_id,u16 ac,const struct ieee80211_tx_queue_params * params)3351 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
3352 struct ieee80211_vif *vif,
3353 unsigned int link_id, u16 ac,
3354 const struct ieee80211_tx_queue_params *params)
3355 {
3356 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3357 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3358
3359 mvmvif->queue_params[ac] = *params;
3360
3361 /*
3362 * No need to update right away, we'll get BSS_CHANGED_QOS
3363 * The exception is P2P_DEVICE interface which needs immediate update.
3364 */
3365 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
3366 int ret;
3367
3368 mutex_lock(&mvm->mutex);
3369 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3370 mutex_unlock(&mvm->mutex);
3371 return ret;
3372 }
3373 return 0;
3374 }
3375
iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_prep_tx_info * info)3376 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
3377 struct ieee80211_vif *vif,
3378 struct ieee80211_prep_tx_info *info)
3379 {
3380 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3381
3382 mutex_lock(&mvm->mutex);
3383 iwl_mvm_protect_assoc(mvm, vif, info->duration);
3384 mutex_unlock(&mvm->mutex);
3385 }
3386
iwl_mvm_mac_mgd_complete_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_prep_tx_info * info)3387 static void iwl_mvm_mac_mgd_complete_tx(struct ieee80211_hw *hw,
3388 struct ieee80211_vif *vif,
3389 struct ieee80211_prep_tx_info *info)
3390 {
3391 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3392
3393 /* for successful cases (auth/assoc), don't cancel session protection */
3394 if (info->success)
3395 return;
3396
3397 mutex_lock(&mvm->mutex);
3398 iwl_mvm_stop_session_protection(mvm, vif);
3399 mutex_unlock(&mvm->mutex);
3400 }
3401
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)3402 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
3403 struct ieee80211_vif *vif,
3404 struct cfg80211_sched_scan_request *req,
3405 struct ieee80211_scan_ies *ies)
3406 {
3407 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3408
3409 int ret;
3410
3411 mutex_lock(&mvm->mutex);
3412
3413 if (!vif->cfg.idle) {
3414 ret = -EBUSY;
3415 goto out;
3416 }
3417
3418 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
3419
3420 out:
3421 mutex_unlock(&mvm->mutex);
3422 return ret;
3423 }
3424
iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw * hw,struct ieee80211_vif * vif)3425 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
3426 struct ieee80211_vif *vif)
3427 {
3428 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3429 int ret;
3430
3431 mutex_lock(&mvm->mutex);
3432
3433 /* Due to a race condition, it's possible that mac80211 asks
3434 * us to stop a sched_scan when it's already stopped. This
3435 * can happen, for instance, if we stopped the scan ourselves,
3436 * called ieee80211_sched_scan_stopped() and the userspace called
3437 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
3438 * could run. To handle this, simply return if the scan is
3439 * not running.
3440 */
3441 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
3442 mutex_unlock(&mvm->mutex);
3443 return 0;
3444 }
3445
3446 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
3447 mutex_unlock(&mvm->mutex);
3448 iwl_mvm_wait_for_async_handlers(mvm);
3449
3450 return ret;
3451 }
3452
__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)3453 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
3454 enum set_key_cmd cmd,
3455 struct ieee80211_vif *vif,
3456 struct ieee80211_sta *sta,
3457 struct ieee80211_key_conf *key)
3458 {
3459 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3460 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3461 struct iwl_mvm_sta *mvmsta = NULL;
3462 struct iwl_mvm_key_pn *ptk_pn;
3463 int keyidx = key->keyidx;
3464 int ret, i;
3465 u8 key_offset;
3466
3467 if (sta)
3468 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3469
3470 switch (key->cipher) {
3471 case WLAN_CIPHER_SUITE_TKIP:
3472 if (!mvm->trans->trans_cfg->gen2) {
3473 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3474 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3475 } else if (vif->type == NL80211_IFTYPE_STATION) {
3476 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE;
3477 } else {
3478 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n");
3479 return -EOPNOTSUPP;
3480 }
3481 break;
3482 case WLAN_CIPHER_SUITE_CCMP:
3483 case WLAN_CIPHER_SUITE_GCMP:
3484 case WLAN_CIPHER_SUITE_GCMP_256:
3485 if (!iwl_mvm_has_new_tx_api(mvm))
3486 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3487 break;
3488 case WLAN_CIPHER_SUITE_AES_CMAC:
3489 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3490 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3491 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
3492 break;
3493 case WLAN_CIPHER_SUITE_WEP40:
3494 case WLAN_CIPHER_SUITE_WEP104:
3495 if (vif->type == NL80211_IFTYPE_STATION)
3496 break;
3497 if (iwl_mvm_has_new_tx_api(mvm))
3498 return -EOPNOTSUPP;
3499 /* support HW crypto on TX */
3500 return 0;
3501 default:
3502 return -EOPNOTSUPP;
3503 }
3504
3505 switch (cmd) {
3506 case SET_KEY:
3507 if (keyidx == 6 || keyidx == 7)
3508 rcu_assign_pointer(mvmvif->bcn_prot.keys[keyidx - 6],
3509 key);
3510
3511 if ((vif->type == NL80211_IFTYPE_ADHOC ||
3512 vif->type == NL80211_IFTYPE_AP) && !sta) {
3513 /*
3514 * GTK on AP interface is a TX-only key, return 0;
3515 * on IBSS they're per-station and because we're lazy
3516 * we don't support them for RX, so do the same.
3517 * CMAC/GMAC in AP/IBSS modes must be done in software.
3518 */
3519 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3520 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3521 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
3522 ret = -EOPNOTSUPP;
3523 break;
3524 }
3525
3526 if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
3527 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
3528 !iwl_mvm_has_new_tx_api(mvm)) {
3529 key->hw_key_idx = STA_KEY_IDX_INVALID;
3530 ret = 0;
3531 break;
3532 }
3533
3534 if (!mvmvif->ap_ibss_active) {
3535 for (i = 0;
3536 i < ARRAY_SIZE(mvmvif->ap_early_keys);
3537 i++) {
3538 if (!mvmvif->ap_early_keys[i]) {
3539 mvmvif->ap_early_keys[i] = key;
3540 break;
3541 }
3542 }
3543
3544 if (i >= ARRAY_SIZE(mvmvif->ap_early_keys))
3545 ret = -ENOSPC;
3546 else
3547 ret = 0;
3548
3549 break;
3550 }
3551 }
3552
3553 /* During FW restart, in order to restore the state as it was,
3554 * don't try to reprogram keys we previously failed for.
3555 */
3556 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3557 key->hw_key_idx == STA_KEY_IDX_INVALID) {
3558 IWL_DEBUG_MAC80211(mvm,
3559 "skip invalid idx key programming during restart\n");
3560 ret = 0;
3561 break;
3562 }
3563
3564 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3565 mvmsta && iwl_mvm_has_new_rx_api(mvm) &&
3566 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3567 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3568 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3569 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3570 struct ieee80211_key_seq seq;
3571 int tid, q;
3572
3573 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
3574 ptk_pn = kzalloc(struct_size(ptk_pn, q,
3575 mvm->trans->num_rx_queues),
3576 GFP_KERNEL);
3577 if (!ptk_pn) {
3578 ret = -ENOMEM;
3579 break;
3580 }
3581
3582 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
3583 ieee80211_get_key_rx_seq(key, tid, &seq);
3584 for (q = 0; q < mvm->trans->num_rx_queues; q++)
3585 memcpy(ptk_pn->q[q].pn[tid],
3586 seq.ccmp.pn,
3587 IEEE80211_CCMP_PN_LEN);
3588 }
3589
3590 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
3591 }
3592
3593 /* in HW restart reuse the index, otherwise request a new one */
3594 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3595 key_offset = key->hw_key_idx;
3596 else
3597 key_offset = STA_KEY_IDX_INVALID;
3598
3599 if (mvmsta && key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3600 mvmsta->pairwise_cipher = key->cipher;
3601
3602 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3603 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
3604 if (ret) {
3605 IWL_WARN(mvm, "set key failed\n");
3606 key->hw_key_idx = STA_KEY_IDX_INVALID;
3607 /*
3608 * can't add key for RX, but we don't need it
3609 * in the device for TX so still return 0,
3610 * unless we have new TX API where we cannot
3611 * put key material into the TX_CMD
3612 */
3613 if (iwl_mvm_has_new_tx_api(mvm))
3614 ret = -EOPNOTSUPP;
3615 else
3616 ret = 0;
3617 }
3618
3619 break;
3620 case DISABLE_KEY:
3621 if (keyidx == 6 || keyidx == 7)
3622 RCU_INIT_POINTER(mvmvif->bcn_prot.keys[keyidx - 6],
3623 NULL);
3624
3625 ret = -ENOENT;
3626 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) {
3627 if (mvmvif->ap_early_keys[i] == key) {
3628 mvmvif->ap_early_keys[i] = NULL;
3629 ret = 0;
3630 }
3631 }
3632
3633 /* found in pending list - don't do anything else */
3634 if (ret == 0)
3635 break;
3636
3637 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3638 ret = 0;
3639 break;
3640 }
3641
3642 if (mvmsta && iwl_mvm_has_new_rx_api(mvm) &&
3643 key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3644 (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3645 key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3646 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3647 ptk_pn = rcu_dereference_protected(
3648 mvmsta->ptk_pn[keyidx],
3649 lockdep_is_held(&mvm->mutex));
3650 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3651 if (ptk_pn)
3652 kfree_rcu(ptk_pn, rcu_head);
3653 }
3654
3655 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3656 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3657 break;
3658 default:
3659 ret = -EINVAL;
3660 }
3661
3662 return ret;
3663 }
3664
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)3665 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
3666 enum set_key_cmd cmd,
3667 struct ieee80211_vif *vif,
3668 struct ieee80211_sta *sta,
3669 struct ieee80211_key_conf *key)
3670 {
3671 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3672 int ret;
3673
3674 mutex_lock(&mvm->mutex);
3675 ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key);
3676 mutex_unlock(&mvm->mutex);
3677
3678 return ret;
3679 }
3680
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)3681 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3682 struct ieee80211_vif *vif,
3683 struct ieee80211_key_conf *keyconf,
3684 struct ieee80211_sta *sta,
3685 u32 iv32, u16 *phase1key)
3686 {
3687 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3688
3689 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3690 return;
3691
3692 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3693 }
3694
3695
iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data * notif_wait,struct iwl_rx_packet * pkt,void * data)3696 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3697 struct iwl_rx_packet *pkt, void *data)
3698 {
3699 struct iwl_mvm *mvm =
3700 container_of(notif_wait, struct iwl_mvm, notif_wait);
3701 struct iwl_hs20_roc_res *resp;
3702 int resp_len = iwl_rx_packet_payload_len(pkt);
3703 struct iwl_mvm_time_event_data *te_data = data;
3704
3705 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3706 return true;
3707
3708 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3709 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3710 return true;
3711 }
3712
3713 resp = (void *)pkt->data;
3714
3715 IWL_DEBUG_TE(mvm,
3716 "Aux ROC: Received response from ucode: status=%d uid=%d\n",
3717 resp->status, resp->event_unique_id);
3718
3719 te_data->uid = le32_to_cpu(resp->event_unique_id);
3720 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3721 te_data->uid);
3722
3723 spin_lock_bh(&mvm->time_event_lock);
3724 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3725 spin_unlock_bh(&mvm->time_event_lock);
3726
3727 return true;
3728 }
3729
3730 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3731 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3732 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3733 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3734 #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)3735 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3736 struct ieee80211_channel *channel,
3737 struct ieee80211_vif *vif,
3738 int duration)
3739 {
3740 int res;
3741 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3742 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3743 static const u16 time_event_response[] = { HOT_SPOT_CMD };
3744 struct iwl_notification_wait wait_time_event;
3745 u32 dtim_interval = vif->bss_conf.dtim_period *
3746 vif->bss_conf.beacon_int;
3747 u32 req_dur, delay;
3748 struct iwl_hs20_roc_req aux_roc_req = {
3749 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3750 .id_and_color =
3751 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3752 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3753 };
3754 struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm,
3755 &aux_roc_req.channel_info);
3756 u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm);
3757
3758 /* Set the channel info data */
3759 iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value,
3760 iwl_mvm_phy_band_from_nl80211(channel->band),
3761 PHY_VHT_CHANNEL_MODE20,
3762 0);
3763
3764 /* Set the time and duration */
3765 tail->apply_time = cpu_to_le32(iwl_mvm_get_systime(mvm));
3766
3767 delay = AUX_ROC_MIN_DELAY;
3768 req_dur = MSEC_TO_TU(duration);
3769
3770 /*
3771 * If we are associated we want the delay time to be at least one
3772 * dtim interval so that the FW can wait until after the DTIM and
3773 * then start the time event, this will potentially allow us to
3774 * remain off-channel for the max duration.
3775 * Since we want to use almost a whole dtim interval we would also
3776 * like the delay to be for 2-3 dtim intervals, in case there are
3777 * other time events with higher priority.
3778 */
3779 if (vif->cfg.assoc) {
3780 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3781 /* We cannot remain off-channel longer than the DTIM interval */
3782 if (dtim_interval <= req_dur) {
3783 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3784 if (req_dur <= AUX_ROC_MIN_DURATION)
3785 req_dur = dtim_interval -
3786 AUX_ROC_MIN_SAFETY_BUFFER;
3787 }
3788 }
3789
3790 tail->duration = cpu_to_le32(req_dur);
3791 tail->apply_time_max_delay = cpu_to_le32(delay);
3792
3793 IWL_DEBUG_TE(mvm,
3794 "ROC: Requesting to remain on channel %u for %ums\n",
3795 channel->hw_value, req_dur);
3796 IWL_DEBUG_TE(mvm,
3797 "\t(requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3798 duration, delay, dtim_interval);
3799
3800 /* Set the node address */
3801 memcpy(tail->node_addr, vif->addr, ETH_ALEN);
3802
3803 lockdep_assert_held(&mvm->mutex);
3804
3805 spin_lock_bh(&mvm->time_event_lock);
3806
3807 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3808 spin_unlock_bh(&mvm->time_event_lock);
3809 return -EIO;
3810 }
3811
3812 te_data->vif = vif;
3813 te_data->duration = duration;
3814 te_data->id = HOT_SPOT_CMD;
3815
3816 spin_unlock_bh(&mvm->time_event_lock);
3817
3818 /*
3819 * Use a notification wait, which really just processes the
3820 * command response and doesn't wait for anything, in order
3821 * to be able to process the response and get the UID inside
3822 * the RX path. Using CMD_WANT_SKB doesn't work because it
3823 * stores the buffer and then wakes up this thread, by which
3824 * time another notification (that the time event started)
3825 * might already be processed unsuccessfully.
3826 */
3827 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3828 time_event_response,
3829 ARRAY_SIZE(time_event_response),
3830 iwl_mvm_rx_aux_roc, te_data);
3831
3832 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, len,
3833 &aux_roc_req);
3834
3835 if (res) {
3836 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3837 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3838 goto out_clear_te;
3839 }
3840
3841 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3842 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3843 /* should never fail */
3844 WARN_ON_ONCE(res);
3845
3846 if (res) {
3847 out_clear_te:
3848 spin_lock_bh(&mvm->time_event_lock);
3849 iwl_mvm_te_clear_data(mvm, te_data);
3850 spin_unlock_bh(&mvm->time_event_lock);
3851 }
3852
3853 return res;
3854 }
3855
iwl_mvm_roc(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel * channel,int duration,enum ieee80211_roc_type type)3856 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3857 struct ieee80211_vif *vif,
3858 struct ieee80211_channel *channel,
3859 int duration,
3860 enum ieee80211_roc_type type)
3861 {
3862 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3863 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3864 struct cfg80211_chan_def chandef;
3865 struct iwl_mvm_phy_ctxt *phy_ctxt;
3866 bool band_change_removal;
3867 int ret, i;
3868
3869 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3870 duration, type);
3871
3872 /*
3873 * Flush the done work, just in case it's still pending, so that
3874 * the work it does can complete and we can accept new frames.
3875 */
3876 flush_work(&mvm->roc_done_wk);
3877
3878 mutex_lock(&mvm->mutex);
3879
3880 switch (vif->type) {
3881 case NL80211_IFTYPE_STATION:
3882 if (fw_has_capa(&mvm->fw->ucode_capa,
3883 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3884 /* Use aux roc framework (HS20) */
3885 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12) {
3886 u32 lmac_id;
3887
3888 lmac_id = iwl_mvm_get_lmac_id(mvm->fw,
3889 channel->band);
3890 ret = iwl_mvm_add_aux_sta(mvm, lmac_id);
3891 if (WARN(ret,
3892 "Failed to allocate aux station"))
3893 goto out_unlock;
3894 }
3895 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3896 vif, duration);
3897 goto out_unlock;
3898 }
3899 IWL_ERR(mvm, "hotspot not supported\n");
3900 ret = -EINVAL;
3901 goto out_unlock;
3902 case NL80211_IFTYPE_P2P_DEVICE:
3903 /* handle below */
3904 break;
3905 default:
3906 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3907 ret = -EINVAL;
3908 goto out_unlock;
3909 }
3910
3911 for (i = 0; i < NUM_PHY_CTX; i++) {
3912 phy_ctxt = &mvm->phy_ctxts[i];
3913 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3914 continue;
3915
3916 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3917 /*
3918 * Unbind the P2P_DEVICE from the current PHY context,
3919 * and if the PHY context is not used remove it.
3920 */
3921 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3922 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3923 goto out_unlock;
3924
3925 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3926
3927 /* Bind the P2P_DEVICE to the current PHY Context */
3928 mvmvif->phy_ctxt = phy_ctxt;
3929
3930 ret = iwl_mvm_binding_add_vif(mvm, vif);
3931 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3932 goto out_unlock;
3933
3934 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3935 goto schedule_time_event;
3936 }
3937 }
3938
3939 /* Need to update the PHY context only if the ROC channel changed */
3940 if (channel == mvmvif->phy_ctxt->channel)
3941 goto schedule_time_event;
3942
3943 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3944
3945 /*
3946 * Check if the remain-on-channel is on a different band and that
3947 * requires context removal, see iwl_mvm_phy_ctxt_changed(). If
3948 * so, we'll need to release and then re-configure here, since we
3949 * must not remove a PHY context that's part of a binding.
3950 */
3951 band_change_removal =
3952 fw_has_capa(&mvm->fw->ucode_capa,
3953 IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT) &&
3954 mvmvif->phy_ctxt->channel->band != chandef.chan->band;
3955
3956 if (mvmvif->phy_ctxt->ref == 1 && !band_change_removal) {
3957 /*
3958 * Change the PHY context configuration as it is currently
3959 * referenced only by the P2P Device MAC (and we can modify it)
3960 */
3961 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3962 &chandef, 1, 1);
3963 if (ret)
3964 goto out_unlock;
3965 } else {
3966 /*
3967 * The PHY context is shared with other MACs (or we're trying to
3968 * switch bands), so remove the P2P Device from the binding,
3969 * allocate an new PHY context and create a new binding.
3970 */
3971 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3972 if (!phy_ctxt) {
3973 ret = -ENOSPC;
3974 goto out_unlock;
3975 }
3976
3977 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3978 1, 1);
3979 if (ret) {
3980 IWL_ERR(mvm, "Failed to change PHY context\n");
3981 goto out_unlock;
3982 }
3983
3984 /* Unbind the P2P_DEVICE from the current PHY context */
3985 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3986 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3987 goto out_unlock;
3988
3989 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3990
3991 /* Bind the P2P_DEVICE to the new allocated PHY context */
3992 mvmvif->phy_ctxt = phy_ctxt;
3993
3994 ret = iwl_mvm_binding_add_vif(mvm, vif);
3995 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3996 goto out_unlock;
3997
3998 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3999 }
4000
4001 schedule_time_event:
4002 /* Schedule the time events */
4003 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
4004
4005 out_unlock:
4006 mutex_unlock(&mvm->mutex);
4007 IWL_DEBUG_MAC80211(mvm, "leave\n");
4008 return ret;
4009 }
4010
iwl_mvm_cancel_roc(struct ieee80211_hw * hw,struct ieee80211_vif * vif)4011 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw,
4012 struct ieee80211_vif *vif)
4013 {
4014 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4015
4016 IWL_DEBUG_MAC80211(mvm, "enter\n");
4017
4018 mutex_lock(&mvm->mutex);
4019 iwl_mvm_stop_roc(mvm, vif);
4020 mutex_unlock(&mvm->mutex);
4021
4022 IWL_DEBUG_MAC80211(mvm, "leave\n");
4023 return 0;
4024 }
4025
4026 struct iwl_mvm_ftm_responder_iter_data {
4027 bool responder;
4028 struct ieee80211_chanctx_conf *ctx;
4029 };
4030
iwl_mvm_ftm_responder_chanctx_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)4031 static void iwl_mvm_ftm_responder_chanctx_iter(void *_data, u8 *mac,
4032 struct ieee80211_vif *vif)
4033 {
4034 struct iwl_mvm_ftm_responder_iter_data *data = _data;
4035
4036 if (rcu_access_pointer(vif->bss_conf.chanctx_conf) == data->ctx &&
4037 vif->type == NL80211_IFTYPE_AP && vif->bss_conf.ftmr_params)
4038 data->responder = true;
4039 }
4040
iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm * mvm,struct ieee80211_chanctx_conf * ctx)4041 static bool iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm *mvm,
4042 struct ieee80211_chanctx_conf *ctx)
4043 {
4044 struct iwl_mvm_ftm_responder_iter_data data = {
4045 .responder = false,
4046 .ctx = ctx,
4047 };
4048
4049 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
4050 IEEE80211_IFACE_ITER_NORMAL,
4051 iwl_mvm_ftm_responder_chanctx_iter,
4052 &data);
4053 return data.responder;
4054 }
4055
__iwl_mvm_add_chanctx(struct iwl_mvm * mvm,struct ieee80211_chanctx_conf * ctx)4056 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
4057 struct ieee80211_chanctx_conf *ctx)
4058 {
4059 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
4060 struct iwl_mvm_phy_ctxt *phy_ctxt;
4061 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx);
4062 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def;
4063 int ret;
4064
4065 lockdep_assert_held(&mvm->mutex);
4066
4067 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
4068
4069 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
4070 if (!phy_ctxt) {
4071 ret = -ENOSPC;
4072 goto out;
4073 }
4074
4075 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def,
4076 ctx->rx_chains_static,
4077 ctx->rx_chains_dynamic);
4078 if (ret) {
4079 IWL_ERR(mvm, "Failed to add PHY context\n");
4080 goto out;
4081 }
4082
4083 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
4084 *phy_ctxt_id = phy_ctxt->id;
4085 out:
4086 return ret;
4087 }
4088
iwl_mvm_add_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)4089 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
4090 struct ieee80211_chanctx_conf *ctx)
4091 {
4092 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4093 int ret;
4094
4095 mutex_lock(&mvm->mutex);
4096 ret = __iwl_mvm_add_chanctx(mvm, ctx);
4097 mutex_unlock(&mvm->mutex);
4098
4099 return ret;
4100 }
4101
__iwl_mvm_remove_chanctx(struct iwl_mvm * mvm,struct ieee80211_chanctx_conf * ctx)4102 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
4103 struct ieee80211_chanctx_conf *ctx)
4104 {
4105 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
4106 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
4107
4108 lockdep_assert_held(&mvm->mutex);
4109
4110 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
4111 }
4112
iwl_mvm_remove_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)4113 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
4114 struct ieee80211_chanctx_conf *ctx)
4115 {
4116 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4117
4118 mutex_lock(&mvm->mutex);
4119 __iwl_mvm_remove_chanctx(mvm, ctx);
4120 mutex_unlock(&mvm->mutex);
4121 }
4122
iwl_mvm_change_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx,u32 changed)4123 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
4124 struct ieee80211_chanctx_conf *ctx,
4125 u32 changed)
4126 {
4127 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4128 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
4129 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
4130 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx);
4131 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def;
4132
4133 if (WARN_ONCE((phy_ctxt->ref > 1) &&
4134 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
4135 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
4136 IEEE80211_CHANCTX_CHANGE_RADAR |
4137 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
4138 "Cannot change PHY. Ref=%d, changed=0x%X\n",
4139 phy_ctxt->ref, changed))
4140 return;
4141
4142 mutex_lock(&mvm->mutex);
4143
4144 /* we are only changing the min_width, may be a noop */
4145 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) {
4146 if (phy_ctxt->width == def->width)
4147 goto out_unlock;
4148
4149 /* we are just toggling between 20_NOHT and 20 */
4150 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 &&
4151 def->width <= NL80211_CHAN_WIDTH_20)
4152 goto out_unlock;
4153 }
4154
4155 iwl_mvm_bt_coex_vif_change(mvm);
4156 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def,
4157 ctx->rx_chains_static,
4158 ctx->rx_chains_dynamic);
4159
4160 out_unlock:
4161 mutex_unlock(&mvm->mutex);
4162 }
4163
__iwl_mvm_assign_vif_chanctx(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx,bool switching_chanctx)4164 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
4165 struct ieee80211_vif *vif,
4166 struct ieee80211_chanctx_conf *ctx,
4167 bool switching_chanctx)
4168 {
4169 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
4170 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
4171 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4172 int ret;
4173
4174 lockdep_assert_held(&mvm->mutex);
4175
4176 mvmvif->phy_ctxt = phy_ctxt;
4177
4178 switch (vif->type) {
4179 case NL80211_IFTYPE_AP:
4180 /* only needed if we're switching chanctx (i.e. during CSA) */
4181 if (switching_chanctx) {
4182 mvmvif->ap_ibss_active = true;
4183 break;
4184 }
4185 fallthrough;
4186 case NL80211_IFTYPE_ADHOC:
4187 /*
4188 * The AP binding flow is handled as part of the start_ap flow
4189 * (in bss_info_changed), similarly for IBSS.
4190 */
4191 ret = 0;
4192 goto out;
4193 case NL80211_IFTYPE_STATION:
4194 mvmvif->csa_bcn_pending = false;
4195 break;
4196 case NL80211_IFTYPE_MONITOR:
4197 /* always disable PS when a monitor interface is active */
4198 mvmvif->ps_disabled = true;
4199 break;
4200 default:
4201 ret = -EINVAL;
4202 goto out;
4203 }
4204
4205 ret = iwl_mvm_binding_add_vif(mvm, vif);
4206 if (ret)
4207 goto out;
4208
4209 /*
4210 * Power state must be updated before quotas,
4211 * otherwise fw will complain.
4212 */
4213 iwl_mvm_power_update_mac(mvm);
4214
4215 /* Setting the quota at this stage is only required for monitor
4216 * interfaces. For the other types, the bss_info changed flow
4217 * will handle quota settings.
4218 */
4219 if (vif->type == NL80211_IFTYPE_MONITOR) {
4220 mvmvif->monitor_active = true;
4221 ret = iwl_mvm_update_quotas(mvm, false, NULL);
4222 if (ret)
4223 goto out_remove_binding;
4224
4225 ret = iwl_mvm_add_snif_sta(mvm, vif);
4226 if (ret)
4227 goto out_remove_binding;
4228
4229 }
4230
4231 /* Handle binding during CSA */
4232 if (vif->type == NL80211_IFTYPE_AP) {
4233 iwl_mvm_update_quotas(mvm, false, NULL);
4234 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
4235 }
4236
4237 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
4238 mvmvif->csa_bcn_pending = true;
4239
4240 if (!fw_has_capa(&mvm->fw->ucode_capa,
4241 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
4242 u32 duration = 3 * vif->bss_conf.beacon_int;
4243
4244 /* Protect the session to make sure we hear the first
4245 * beacon on the new channel.
4246 */
4247 iwl_mvm_protect_session(mvm, vif, duration, duration,
4248 vif->bss_conf.beacon_int / 2,
4249 true);
4250 }
4251
4252 iwl_mvm_update_quotas(mvm, false, NULL);
4253 }
4254
4255 goto out;
4256
4257 out_remove_binding:
4258 iwl_mvm_binding_remove_vif(mvm, vif);
4259 iwl_mvm_power_update_mac(mvm);
4260 out:
4261 if (ret)
4262 mvmvif->phy_ctxt = NULL;
4263 return ret;
4264 }
iwl_mvm_assign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf,struct ieee80211_chanctx_conf * ctx)4265 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
4266 struct ieee80211_vif *vif,
4267 struct ieee80211_bss_conf *link_conf,
4268 struct ieee80211_chanctx_conf *ctx)
4269 {
4270 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4271 int ret;
4272
4273 mutex_lock(&mvm->mutex);
4274 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
4275 mutex_unlock(&mvm->mutex);
4276
4277 return ret;
4278 }
4279
__iwl_mvm_unassign_vif_chanctx(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx,bool switching_chanctx)4280 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
4281 struct ieee80211_vif *vif,
4282 struct ieee80211_chanctx_conf *ctx,
4283 bool switching_chanctx)
4284 {
4285 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4286 struct ieee80211_vif *disabled_vif = NULL;
4287
4288 lockdep_assert_held(&mvm->mutex);
4289 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
4290
4291 switch (vif->type) {
4292 case NL80211_IFTYPE_ADHOC:
4293 goto out;
4294 case NL80211_IFTYPE_MONITOR:
4295 mvmvif->monitor_active = false;
4296 mvmvif->ps_disabled = false;
4297 iwl_mvm_rm_snif_sta(mvm, vif);
4298 break;
4299 case NL80211_IFTYPE_AP:
4300 /* This part is triggered only during CSA */
4301 if (!switching_chanctx || !mvmvif->ap_ibss_active)
4302 goto out;
4303
4304 mvmvif->csa_countdown = false;
4305
4306 /* Set CS bit on all the stations */
4307 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
4308
4309 /* Save blocked iface, the timeout is set on the next beacon */
4310 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
4311
4312 mvmvif->ap_ibss_active = false;
4313 break;
4314 case NL80211_IFTYPE_STATION:
4315 if (!switching_chanctx)
4316 break;
4317
4318 disabled_vif = vif;
4319
4320 if (!fw_has_capa(&mvm->fw->ucode_capa,
4321 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
4322 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
4323 break;
4324 default:
4325 break;
4326 }
4327
4328 iwl_mvm_update_quotas(mvm, false, disabled_vif);
4329 iwl_mvm_binding_remove_vif(mvm, vif);
4330
4331 out:
4332 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD) &&
4333 switching_chanctx)
4334 return;
4335 mvmvif->phy_ctxt = NULL;
4336 iwl_mvm_power_update_mac(mvm);
4337 }
4338
iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf,struct ieee80211_chanctx_conf * ctx)4339 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
4340 struct ieee80211_vif *vif,
4341 struct ieee80211_bss_conf *link_conf,
4342 struct ieee80211_chanctx_conf *ctx)
4343 {
4344 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4345
4346 mutex_lock(&mvm->mutex);
4347 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
4348 mutex_unlock(&mvm->mutex);
4349 }
4350
4351 static int
iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm * mvm,struct ieee80211_vif_chanctx_switch * vifs)4352 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
4353 struct ieee80211_vif_chanctx_switch *vifs)
4354 {
4355 int ret;
4356
4357 mutex_lock(&mvm->mutex);
4358 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
4359 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
4360
4361 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
4362 if (ret) {
4363 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
4364 goto out_reassign;
4365 }
4366
4367 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
4368 true);
4369 if (ret) {
4370 IWL_ERR(mvm,
4371 "failed to assign new_ctx during channel switch\n");
4372 goto out_remove;
4373 }
4374
4375 /* we don't support TDLS during DCM - can be caused by channel switch */
4376 if (iwl_mvm_phy_ctx_count(mvm) > 1)
4377 iwl_mvm_teardown_tdls_peers(mvm);
4378
4379 goto out;
4380
4381 out_remove:
4382 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
4383
4384 out_reassign:
4385 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
4386 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
4387 goto out_restart;
4388 }
4389
4390 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
4391 true)) {
4392 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
4393 goto out_restart;
4394 }
4395
4396 goto out;
4397
4398 out_restart:
4399 /* things keep failing, better restart the hw */
4400 iwl_mvm_nic_restart(mvm, false);
4401
4402 out:
4403 mutex_unlock(&mvm->mutex);
4404
4405 return ret;
4406 }
4407
4408 static int
iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm * mvm,struct ieee80211_vif_chanctx_switch * vifs)4409 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
4410 struct ieee80211_vif_chanctx_switch *vifs)
4411 {
4412 int ret;
4413
4414 mutex_lock(&mvm->mutex);
4415 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
4416
4417 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
4418 true);
4419 if (ret) {
4420 IWL_ERR(mvm,
4421 "failed to assign new_ctx during channel switch\n");
4422 goto out_reassign;
4423 }
4424
4425 goto out;
4426
4427 out_reassign:
4428 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
4429 true)) {
4430 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
4431 goto out_restart;
4432 }
4433
4434 goto out;
4435
4436 out_restart:
4437 /* things keep failing, better restart the hw */
4438 iwl_mvm_nic_restart(mvm, false);
4439
4440 out:
4441 mutex_unlock(&mvm->mutex);
4442
4443 return ret;
4444 }
4445
iwl_mvm_switch_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif_chanctx_switch * vifs,int n_vifs,enum ieee80211_chanctx_switch_mode mode)4446 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
4447 struct ieee80211_vif_chanctx_switch *vifs,
4448 int n_vifs,
4449 enum ieee80211_chanctx_switch_mode mode)
4450 {
4451 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4452 int ret;
4453
4454 /* we only support a single-vif right now */
4455 if (n_vifs > 1)
4456 return -EOPNOTSUPP;
4457
4458 switch (mode) {
4459 case CHANCTX_SWMODE_SWAP_CONTEXTS:
4460 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
4461 break;
4462 case CHANCTX_SWMODE_REASSIGN_VIF:
4463 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
4464 break;
4465 default:
4466 ret = -EOPNOTSUPP;
4467 break;
4468 }
4469
4470 return ret;
4471 }
4472
iwl_mvm_tx_last_beacon(struct ieee80211_hw * hw)4473 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
4474 {
4475 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4476
4477 return mvm->ibss_manager;
4478 }
4479
iwl_mvm_set_tim(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool set)4480 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
4481 struct ieee80211_sta *sta,
4482 bool set)
4483 {
4484 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4485 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4486
4487 if (!mvm_sta || !mvm_sta->vif) {
4488 IWL_ERR(mvm, "Station is not associated to a vif\n");
4489 return -EINVAL;
4490 }
4491
4492 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
4493 }
4494
4495 #ifdef CONFIG_NL80211_TESTMODE
4496 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
4497 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
4498 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
4499 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
4500 };
4501
__iwl_mvm_mac_testmode_cmd(struct iwl_mvm * mvm,struct ieee80211_vif * vif,void * data,int len)4502 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
4503 struct ieee80211_vif *vif,
4504 void *data, int len)
4505 {
4506 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
4507 int err;
4508 u32 noa_duration;
4509
4510 err = nla_parse_deprecated(tb, IWL_MVM_TM_ATTR_MAX, data, len,
4511 iwl_mvm_tm_policy, NULL);
4512 if (err)
4513 return err;
4514
4515 if (!tb[IWL_MVM_TM_ATTR_CMD])
4516 return -EINVAL;
4517
4518 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
4519 case IWL_MVM_TM_CMD_SET_NOA:
4520 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
4521 !vif->bss_conf.enable_beacon ||
4522 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
4523 return -EINVAL;
4524
4525 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
4526 if (noa_duration >= vif->bss_conf.beacon_int)
4527 return -EINVAL;
4528
4529 mvm->noa_duration = noa_duration;
4530 mvm->noa_vif = vif;
4531
4532 return iwl_mvm_update_quotas(mvm, true, NULL);
4533 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
4534 /* must be associated client vif - ignore authorized */
4535 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
4536 !vif->cfg.assoc || !vif->bss_conf.dtim_period ||
4537 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
4538 return -EINVAL;
4539
4540 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
4541 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
4542 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4543 }
4544
4545 return -EOPNOTSUPP;
4546 }
4547
iwl_mvm_mac_testmode_cmd(struct ieee80211_hw * hw,struct ieee80211_vif * vif,void * data,int len)4548 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
4549 struct ieee80211_vif *vif,
4550 void *data, int len)
4551 {
4552 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4553 int err;
4554
4555 mutex_lock(&mvm->mutex);
4556 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
4557 mutex_unlock(&mvm->mutex);
4558
4559 return err;
4560 }
4561 #endif
4562
iwl_mvm_channel_switch(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)4563 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
4564 struct ieee80211_vif *vif,
4565 struct ieee80211_channel_switch *chsw)
4566 {
4567 /* By implementing this operation, we prevent mac80211 from
4568 * starting its own channel switch timer, so that we can call
4569 * ieee80211_chswitch_done() ourselves at the right time
4570 * (which is when the absence time event starts).
4571 */
4572
4573 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
4574 "dummy channel switch op\n");
4575 }
4576
iwl_mvm_schedule_client_csa(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)4577 static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm,
4578 struct ieee80211_vif *vif,
4579 struct ieee80211_channel_switch *chsw)
4580 {
4581 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4582 struct iwl_chan_switch_te_cmd cmd = {
4583 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
4584 mvmvif->color)),
4585 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
4586 .tsf = cpu_to_le32(chsw->timestamp),
4587 .cs_count = chsw->count,
4588 .cs_mode = chsw->block_tx,
4589 };
4590
4591 lockdep_assert_held(&mvm->mutex);
4592
4593 if (chsw->delay)
4594 cmd.cs_delayed_bcn_count =
4595 DIV_ROUND_UP(chsw->delay, vif->bss_conf.beacon_int);
4596
4597 return iwl_mvm_send_cmd_pdu(mvm,
4598 WIDE_ID(MAC_CONF_GROUP,
4599 CHANNEL_SWITCH_TIME_EVENT_CMD),
4600 0, sizeof(cmd), &cmd);
4601 }
4602
iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)4603 static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm,
4604 struct ieee80211_vif *vif,
4605 struct ieee80211_channel_switch *chsw)
4606 {
4607 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4608 u32 apply_time;
4609
4610 /* Schedule the time event to a bit before beacon 1,
4611 * to make sure we're in the new channel when the
4612 * GO/AP arrives. In case count <= 1 immediately schedule the
4613 * TE (this might result with some packet loss or connection
4614 * loss).
4615 */
4616 if (chsw->count <= 1)
4617 apply_time = 0;
4618 else
4619 apply_time = chsw->device_timestamp +
4620 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
4621 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
4622
4623 if (chsw->block_tx)
4624 iwl_mvm_csa_client_absent(mvm, vif);
4625
4626 if (mvmvif->bf_data.bf_enabled) {
4627 int ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4628
4629 if (ret)
4630 return ret;
4631 }
4632
4633 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
4634 apply_time);
4635
4636 return 0;
4637 }
4638
4639 #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)4640 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
4641 struct ieee80211_vif *vif,
4642 struct ieee80211_channel_switch *chsw)
4643 {
4644 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4645 struct ieee80211_vif *csa_vif;
4646 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4647 int ret;
4648
4649 mutex_lock(&mvm->mutex);
4650
4651 mvmvif->csa_failed = false;
4652
4653 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
4654 chsw->chandef.center_freq1);
4655
4656 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt,
4657 ieee80211_vif_to_wdev(vif),
4658 FW_DBG_TRIGGER_CHANNEL_SWITCH);
4659
4660 switch (vif->type) {
4661 case NL80211_IFTYPE_AP:
4662 csa_vif =
4663 rcu_dereference_protected(mvm->csa_vif,
4664 lockdep_is_held(&mvm->mutex));
4665 if (WARN_ONCE(csa_vif && csa_vif->bss_conf.csa_active,
4666 "Another CSA is already in progress")) {
4667 ret = -EBUSY;
4668 goto out_unlock;
4669 }
4670
4671 /* we still didn't unblock tx. prevent new CS meanwhile */
4672 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
4673 lockdep_is_held(&mvm->mutex))) {
4674 ret = -EBUSY;
4675 goto out_unlock;
4676 }
4677
4678 rcu_assign_pointer(mvm->csa_vif, vif);
4679
4680 if (WARN_ONCE(mvmvif->csa_countdown,
4681 "Previous CSA countdown didn't complete")) {
4682 ret = -EBUSY;
4683 goto out_unlock;
4684 }
4685
4686 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
4687
4688 break;
4689 case NL80211_IFTYPE_STATION:
4690 /*
4691 * In the new flow FW is in charge of timing the switch so there
4692 * is no need for all of this
4693 */
4694 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
4695 CHANNEL_SWITCH_ERROR_NOTIF,
4696 0))
4697 break;
4698
4699 /*
4700 * We haven't configured the firmware to be associated yet since
4701 * we don't know the dtim period. In this case, the firmware can't
4702 * track the beacons.
4703 */
4704 if (!vif->cfg.assoc || !vif->bss_conf.dtim_period) {
4705 ret = -EBUSY;
4706 goto out_unlock;
4707 }
4708
4709 if (chsw->delay > IWL_MAX_CSA_BLOCK_TX)
4710 schedule_delayed_work(&mvmvif->csa_work, 0);
4711
4712 if (chsw->block_tx) {
4713 /*
4714 * In case of undetermined / long time with immediate
4715 * quiet monitor status to gracefully disconnect
4716 */
4717 if (!chsw->count ||
4718 chsw->count * vif->bss_conf.beacon_int >
4719 IWL_MAX_CSA_BLOCK_TX)
4720 schedule_delayed_work(&mvmvif->csa_work,
4721 msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX));
4722 }
4723
4724 if (!fw_has_capa(&mvm->fw->ucode_capa,
4725 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
4726 ret = iwl_mvm_old_pre_chan_sw_sta(mvm, vif, chsw);
4727 if (ret)
4728 goto out_unlock;
4729 } else {
4730 iwl_mvm_schedule_client_csa(mvm, vif, chsw);
4731 }
4732
4733 mvmvif->csa_count = chsw->count;
4734 mvmvif->csa_misbehave = false;
4735 break;
4736 default:
4737 break;
4738 }
4739
4740 mvmvif->ps_disabled = true;
4741
4742 ret = iwl_mvm_power_update_ps(mvm);
4743 if (ret)
4744 goto out_unlock;
4745
4746 /* we won't be on this channel any longer */
4747 iwl_mvm_teardown_tdls_peers(mvm);
4748
4749 out_unlock:
4750 mutex_unlock(&mvm->mutex);
4751
4752 return ret;
4753 }
4754
iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)4755 static void iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw *hw,
4756 struct ieee80211_vif *vif,
4757 struct ieee80211_channel_switch *chsw)
4758 {
4759 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4760 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4761 struct iwl_chan_switch_te_cmd cmd = {
4762 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
4763 mvmvif->color)),
4764 .action = cpu_to_le32(FW_CTXT_ACTION_MODIFY),
4765 .tsf = cpu_to_le32(chsw->timestamp),
4766 .cs_count = chsw->count,
4767 .cs_mode = chsw->block_tx,
4768 };
4769
4770 /*
4771 * In the new flow FW is in charge of timing the switch so there is no
4772 * need for all of this
4773 */
4774 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
4775 CHANNEL_SWITCH_ERROR_NOTIF, 0))
4776 return;
4777
4778 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CS_MODIFY))
4779 return;
4780
4781 IWL_DEBUG_MAC80211(mvm, "Modify CSA on mac %d count = %d (old %d) mode = %d\n",
4782 mvmvif->id, chsw->count, mvmvif->csa_count, chsw->block_tx);
4783
4784 if (chsw->count >= mvmvif->csa_count && chsw->block_tx) {
4785 if (mvmvif->csa_misbehave) {
4786 /* Second time, give up on this AP*/
4787 iwl_mvm_abort_channel_switch(hw, vif);
4788 ieee80211_chswitch_done(vif, false);
4789 mvmvif->csa_misbehave = false;
4790 return;
4791 }
4792 mvmvif->csa_misbehave = true;
4793 }
4794 mvmvif->csa_count = chsw->count;
4795
4796 mutex_lock(&mvm->mutex);
4797 if (mvmvif->csa_failed)
4798 goto out_unlock;
4799
4800 WARN_ON(iwl_mvm_send_cmd_pdu(mvm,
4801 WIDE_ID(MAC_CONF_GROUP,
4802 CHANNEL_SWITCH_TIME_EVENT_CMD),
4803 0, sizeof(cmd), &cmd));
4804 out_unlock:
4805 mutex_unlock(&mvm->mutex);
4806 }
4807
iwl_mvm_flush_no_vif(struct iwl_mvm * mvm,u32 queues,bool drop)4808 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
4809 {
4810 int i;
4811
4812 if (!iwl_mvm_has_new_tx_api(mvm)) {
4813 if (drop) {
4814 mutex_lock(&mvm->mutex);
4815 iwl_mvm_flush_tx_path(mvm,
4816 iwl_mvm_flushable_queues(mvm) & queues);
4817 mutex_unlock(&mvm->mutex);
4818 } else {
4819 iwl_trans_wait_tx_queues_empty(mvm->trans, queues);
4820 }
4821 return;
4822 }
4823
4824 mutex_lock(&mvm->mutex);
4825 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
4826 struct ieee80211_sta *sta;
4827
4828 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4829 lockdep_is_held(&mvm->mutex));
4830 if (IS_ERR_OR_NULL(sta))
4831 continue;
4832
4833 if (drop)
4834 iwl_mvm_flush_sta_tids(mvm, i, 0xFFFF);
4835 else
4836 iwl_mvm_wait_sta_queues_empty(mvm,
4837 iwl_mvm_sta_from_mac80211(sta));
4838 }
4839 mutex_unlock(&mvm->mutex);
4840 }
4841
iwl_mvm_mac_flush(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 queues,bool drop)4842 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
4843 struct ieee80211_vif *vif, u32 queues, bool drop)
4844 {
4845 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4846 struct iwl_mvm_vif *mvmvif;
4847 struct iwl_mvm_sta *mvmsta;
4848 struct ieee80211_sta *sta;
4849 int i;
4850 u32 msk = 0;
4851
4852 if (!vif) {
4853 iwl_mvm_flush_no_vif(mvm, queues, drop);
4854 return;
4855 }
4856
4857 if (vif->type != NL80211_IFTYPE_STATION)
4858 return;
4859
4860 /* Make sure we're done with the deferred traffic before flushing */
4861 flush_work(&mvm->add_stream_wk);
4862
4863 mutex_lock(&mvm->mutex);
4864 mvmvif = iwl_mvm_vif_from_mac80211(vif);
4865
4866 /* flush the AP-station and all TDLS peers */
4867 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
4868 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4869 lockdep_is_held(&mvm->mutex));
4870 if (IS_ERR_OR_NULL(sta))
4871 continue;
4872
4873 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4874 if (mvmsta->vif != vif)
4875 continue;
4876
4877 /* make sure only TDLS peers or the AP are flushed */
4878 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4879
4880 if (drop) {
4881 if (iwl_mvm_flush_sta(mvm, mvmsta, false))
4882 IWL_ERR(mvm, "flush request fail\n");
4883 } else {
4884 msk |= mvmsta->tfd_queue_msk;
4885 if (iwl_mvm_has_new_tx_api(mvm))
4886 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4887 }
4888 }
4889
4890 mutex_unlock(&mvm->mutex);
4891
4892 /* this can take a while, and we may need/want other operations
4893 * to succeed while doing this, so do it without the mutex held
4894 */
4895 if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4896 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4897 }
4898
iwl_mvm_mac_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)4899 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4900 struct survey_info *survey)
4901 {
4902 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4903 int ret;
4904
4905 memset(survey, 0, sizeof(*survey));
4906
4907 /* only support global statistics right now */
4908 if (idx != 0)
4909 return -ENOENT;
4910
4911 if (!fw_has_capa(&mvm->fw->ucode_capa,
4912 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4913 return -ENOENT;
4914
4915 mutex_lock(&mvm->mutex);
4916
4917 if (iwl_mvm_firmware_running(mvm)) {
4918 ret = iwl_mvm_request_statistics(mvm, false);
4919 if (ret)
4920 goto out;
4921 }
4922
4923 survey->filled = SURVEY_INFO_TIME |
4924 SURVEY_INFO_TIME_RX |
4925 SURVEY_INFO_TIME_TX |
4926 SURVEY_INFO_TIME_SCAN;
4927 survey->time = mvm->accu_radio_stats.on_time_rf +
4928 mvm->radio_stats.on_time_rf;
4929 do_div(survey->time, USEC_PER_MSEC);
4930
4931 survey->time_rx = mvm->accu_radio_stats.rx_time +
4932 mvm->radio_stats.rx_time;
4933 do_div(survey->time_rx, USEC_PER_MSEC);
4934
4935 survey->time_tx = mvm->accu_radio_stats.tx_time +
4936 mvm->radio_stats.tx_time;
4937 do_div(survey->time_tx, USEC_PER_MSEC);
4938
4939 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4940 mvm->radio_stats.on_time_scan;
4941 do_div(survey->time_scan, USEC_PER_MSEC);
4942
4943 ret = 0;
4944 out:
4945 mutex_unlock(&mvm->mutex);
4946 return ret;
4947 }
4948
iwl_mvm_set_sta_rate(u32 rate_n_flags,struct rate_info * rinfo)4949 static void iwl_mvm_set_sta_rate(u32 rate_n_flags, struct rate_info *rinfo)
4950 {
4951 u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
4952 u32 gi_ltf;
4953
4954 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
4955 case RATE_MCS_CHAN_WIDTH_20:
4956 rinfo->bw = RATE_INFO_BW_20;
4957 break;
4958 case RATE_MCS_CHAN_WIDTH_40:
4959 rinfo->bw = RATE_INFO_BW_40;
4960 break;
4961 case RATE_MCS_CHAN_WIDTH_80:
4962 rinfo->bw = RATE_INFO_BW_80;
4963 break;
4964 case RATE_MCS_CHAN_WIDTH_160:
4965 rinfo->bw = RATE_INFO_BW_160;
4966 break;
4967 }
4968
4969 if (format == RATE_MCS_CCK_MSK ||
4970 format == RATE_MCS_LEGACY_OFDM_MSK) {
4971 int rate = u32_get_bits(rate_n_flags, RATE_LEGACY_RATE_MSK);
4972
4973 /* add the offset needed to get to the legacy ofdm indices */
4974 if (format == RATE_MCS_LEGACY_OFDM_MSK)
4975 rate += IWL_FIRST_OFDM_RATE;
4976
4977 switch (rate) {
4978 case IWL_RATE_1M_INDEX:
4979 rinfo->legacy = 10;
4980 break;
4981 case IWL_RATE_2M_INDEX:
4982 rinfo->legacy = 20;
4983 break;
4984 case IWL_RATE_5M_INDEX:
4985 rinfo->legacy = 55;
4986 break;
4987 case IWL_RATE_11M_INDEX:
4988 rinfo->legacy = 110;
4989 break;
4990 case IWL_RATE_6M_INDEX:
4991 rinfo->legacy = 60;
4992 break;
4993 case IWL_RATE_9M_INDEX:
4994 rinfo->legacy = 90;
4995 break;
4996 case IWL_RATE_12M_INDEX:
4997 rinfo->legacy = 120;
4998 break;
4999 case IWL_RATE_18M_INDEX:
5000 rinfo->legacy = 180;
5001 break;
5002 case IWL_RATE_24M_INDEX:
5003 rinfo->legacy = 240;
5004 break;
5005 case IWL_RATE_36M_INDEX:
5006 rinfo->legacy = 360;
5007 break;
5008 case IWL_RATE_48M_INDEX:
5009 rinfo->legacy = 480;
5010 break;
5011 case IWL_RATE_54M_INDEX:
5012 rinfo->legacy = 540;
5013 }
5014 return;
5015 }
5016
5017 rinfo->nss = u32_get_bits(rate_n_flags,
5018 RATE_MCS_NSS_MSK) + 1;
5019 rinfo->mcs = format == RATE_MCS_HT_MSK ?
5020 RATE_HT_MCS_INDEX(rate_n_flags) :
5021 u32_get_bits(rate_n_flags, RATE_MCS_CODE_MSK);
5022
5023 if (rate_n_flags & RATE_MCS_SGI_MSK)
5024 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
5025
5026 switch (format) {
5027 case RATE_MCS_HE_MSK:
5028 gi_ltf = u32_get_bits(rate_n_flags, RATE_MCS_HE_GI_LTF_MSK);
5029
5030 rinfo->flags |= RATE_INFO_FLAGS_HE_MCS;
5031
5032 if (rate_n_flags & RATE_MCS_HE_106T_MSK) {
5033 rinfo->bw = RATE_INFO_BW_HE_RU;
5034 rinfo->he_ru_alloc = NL80211_RATE_INFO_HE_RU_ALLOC_106;
5035 }
5036
5037 switch (rate_n_flags & RATE_MCS_HE_TYPE_MSK) {
5038 case RATE_MCS_HE_TYPE_SU:
5039 case RATE_MCS_HE_TYPE_EXT_SU:
5040 if (gi_ltf == 0 || gi_ltf == 1)
5041 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
5042 else if (gi_ltf == 2)
5043 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
5044 else if (gi_ltf == 3)
5045 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
5046 else
5047 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
5048 break;
5049 case RATE_MCS_HE_TYPE_MU:
5050 if (gi_ltf == 0 || gi_ltf == 1)
5051 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
5052 else if (gi_ltf == 2)
5053 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
5054 else
5055 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
5056 break;
5057 case RATE_MCS_HE_TYPE_TRIG:
5058 if (gi_ltf == 0 || gi_ltf == 1)
5059 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
5060 else
5061 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
5062 break;
5063 }
5064
5065 if (rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK)
5066 rinfo->he_dcm = 1;
5067 break;
5068 case RATE_MCS_HT_MSK:
5069 rinfo->flags |= RATE_INFO_FLAGS_MCS;
5070 break;
5071 case RATE_MCS_VHT_MSK:
5072 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
5073 break;
5074 }
5075 }
5076
iwl_mvm_mac_sta_statistics(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct station_info * sinfo)5077 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
5078 struct ieee80211_vif *vif,
5079 struct ieee80211_sta *sta,
5080 struct station_info *sinfo)
5081 {
5082 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5083 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
5084 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
5085
5086 if (mvmsta->avg_energy) {
5087 sinfo->signal_avg = -(s8)mvmsta->avg_energy;
5088 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG);
5089 }
5090
5091 if (iwl_mvm_has_tlc_offload(mvm)) {
5092 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
5093
5094 iwl_mvm_set_sta_rate(lq_sta->last_rate_n_flags, &sinfo->txrate);
5095 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
5096 }
5097
5098 /* if beacon filtering isn't on mac80211 does it anyway */
5099 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
5100 return;
5101
5102 if (!vif->cfg.assoc)
5103 return;
5104
5105 mutex_lock(&mvm->mutex);
5106
5107 if (mvmvif->ap_sta_id != mvmsta->sta_id)
5108 goto unlock;
5109
5110 if (iwl_mvm_request_statistics(mvm, false))
5111 goto unlock;
5112
5113 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
5114 mvmvif->beacon_stats.accu_num_beacons;
5115 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX);
5116 if (mvmvif->beacon_stats.avg_signal) {
5117 /* firmware only reports a value after RXing a few beacons */
5118 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
5119 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
5120 }
5121 unlock:
5122 mutex_unlock(&mvm->mutex);
5123 }
5124
iwl_mvm_event_mlme_callback_ini(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const struct ieee80211_mlme_event * mlme)5125 static void iwl_mvm_event_mlme_callback_ini(struct iwl_mvm *mvm,
5126 struct ieee80211_vif *vif,
5127 const struct ieee80211_mlme_event *mlme)
5128 {
5129 if ((mlme->data == ASSOC_EVENT || mlme->data == AUTH_EVENT) &&
5130 (mlme->status == MLME_DENIED || mlme->status == MLME_TIMEOUT)) {
5131 iwl_dbg_tlv_time_point(&mvm->fwrt,
5132 IWL_FW_INI_TIME_POINT_ASSOC_FAILED,
5133 NULL);
5134 return;
5135 }
5136
5137 if (mlme->data == DEAUTH_RX_EVENT || mlme->data == DEAUTH_TX_EVENT) {
5138 iwl_dbg_tlv_time_point(&mvm->fwrt,
5139 IWL_FW_INI_TIME_POINT_DEASSOC,
5140 NULL);
5141 return;
5142 }
5143 }
5144
iwl_mvm_event_mlme_callback(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const struct ieee80211_event * event)5145 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
5146 struct ieee80211_vif *vif,
5147 const struct ieee80211_event *event)
5148 {
5149 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \
5150 do { \
5151 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \
5152 break; \
5153 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \
5154 } while (0)
5155
5156 struct iwl_fw_dbg_trigger_tlv *trig;
5157 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
5158
5159 if (iwl_trans_dbg_ini_valid(mvm->trans)) {
5160 iwl_mvm_event_mlme_callback_ini(mvm, vif, &event->u.mlme);
5161 return;
5162 }
5163
5164 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
5165 FW_DBG_TRIGGER_MLME);
5166 if (!trig)
5167 return;
5168
5169 trig_mlme = (void *)trig->data;
5170
5171 if (event->u.mlme.data == ASSOC_EVENT) {
5172 if (event->u.mlme.status == MLME_DENIED)
5173 CHECK_MLME_TRIGGER(stop_assoc_denied,
5174 "DENIED ASSOC: reason %d",
5175 event->u.mlme.reason);
5176 else if (event->u.mlme.status == MLME_TIMEOUT)
5177 CHECK_MLME_TRIGGER(stop_assoc_timeout,
5178 "ASSOC TIMEOUT");
5179 } else if (event->u.mlme.data == AUTH_EVENT) {
5180 if (event->u.mlme.status == MLME_DENIED)
5181 CHECK_MLME_TRIGGER(stop_auth_denied,
5182 "DENIED AUTH: reason %d",
5183 event->u.mlme.reason);
5184 else if (event->u.mlme.status == MLME_TIMEOUT)
5185 CHECK_MLME_TRIGGER(stop_auth_timeout,
5186 "AUTH TIMEOUT");
5187 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
5188 CHECK_MLME_TRIGGER(stop_rx_deauth,
5189 "DEAUTH RX %d", event->u.mlme.reason);
5190 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
5191 CHECK_MLME_TRIGGER(stop_tx_deauth,
5192 "DEAUTH TX %d", event->u.mlme.reason);
5193 }
5194 #undef CHECK_MLME_TRIGGER
5195 }
5196
iwl_mvm_event_bar_rx_callback(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const struct ieee80211_event * event)5197 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
5198 struct ieee80211_vif *vif,
5199 const struct ieee80211_event *event)
5200 {
5201 struct iwl_fw_dbg_trigger_tlv *trig;
5202 struct iwl_fw_dbg_trigger_ba *ba_trig;
5203
5204 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
5205 FW_DBG_TRIGGER_BA);
5206 if (!trig)
5207 return;
5208
5209 ba_trig = (void *)trig->data;
5210
5211 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
5212 return;
5213
5214 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
5215 "BAR received from %pM, tid %d, ssn %d",
5216 event->u.ba.sta->addr, event->u.ba.tid,
5217 event->u.ba.ssn);
5218 }
5219
iwl_mvm_mac_event_callback(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const struct ieee80211_event * event)5220 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
5221 struct ieee80211_vif *vif,
5222 const struct ieee80211_event *event)
5223 {
5224 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5225
5226 switch (event->type) {
5227 case MLME_EVENT:
5228 iwl_mvm_event_mlme_callback(mvm, vif, event);
5229 break;
5230 case BAR_RX_EVENT:
5231 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
5232 break;
5233 case BA_FRAME_TIMEOUT:
5234 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta,
5235 event->u.ba.tid);
5236 break;
5237 default:
5238 break;
5239 }
5240 }
5241
iwl_mvm_sync_rx_queues_internal(struct iwl_mvm * mvm,enum iwl_mvm_rxq_notif_type type,bool sync,const void * data,u32 size)5242 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
5243 enum iwl_mvm_rxq_notif_type type,
5244 bool sync,
5245 const void *data, u32 size)
5246 {
5247 struct {
5248 struct iwl_rxq_sync_cmd cmd;
5249 struct iwl_mvm_internal_rxq_notif notif;
5250 } __packed cmd = {
5251 .cmd.rxq_mask = cpu_to_le32(BIT(mvm->trans->num_rx_queues) - 1),
5252 .cmd.count =
5253 cpu_to_le32(sizeof(struct iwl_mvm_internal_rxq_notif) +
5254 size),
5255 .notif.type = type,
5256 .notif.sync = sync,
5257 };
5258 struct iwl_host_cmd hcmd = {
5259 .id = WIDE_ID(DATA_PATH_GROUP, TRIGGER_RX_QUEUES_NOTIF_CMD),
5260 .data[0] = &cmd,
5261 .len[0] = sizeof(cmd),
5262 .data[1] = data,
5263 .len[1] = size,
5264 .flags = sync ? 0 : CMD_ASYNC,
5265 };
5266 int ret;
5267
5268 /* size must be a multiple of DWORD */
5269 if (WARN_ON(cmd.cmd.count & cpu_to_le32(3)))
5270 return;
5271
5272 if (!iwl_mvm_has_new_rx_api(mvm))
5273 return;
5274
5275 if (sync) {
5276 cmd.notif.cookie = mvm->queue_sync_cookie;
5277 mvm->queue_sync_state = (1 << mvm->trans->num_rx_queues) - 1;
5278 }
5279
5280 ret = iwl_mvm_send_cmd(mvm, &hcmd);
5281 if (ret) {
5282 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
5283 goto out;
5284 }
5285
5286 if (sync) {
5287 lockdep_assert_held(&mvm->mutex);
5288 ret = wait_event_timeout(mvm->rx_sync_waitq,
5289 READ_ONCE(mvm->queue_sync_state) == 0 ||
5290 iwl_mvm_is_radio_killed(mvm),
5291 HZ);
5292 WARN_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm),
5293 "queue sync: failed to sync, state is 0x%lx\n",
5294 mvm->queue_sync_state);
5295 }
5296
5297 out:
5298 if (sync) {
5299 mvm->queue_sync_state = 0;
5300 mvm->queue_sync_cookie++;
5301 }
5302 }
5303
iwl_mvm_sync_rx_queues(struct ieee80211_hw * hw)5304 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
5305 {
5306 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5307
5308 mutex_lock(&mvm->mutex);
5309 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY, true, NULL, 0);
5310 mutex_unlock(&mvm->mutex);
5311 }
5312
5313 static int
iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_ftm_responder_stats * stats)5314 iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw *hw,
5315 struct ieee80211_vif *vif,
5316 struct cfg80211_ftm_responder_stats *stats)
5317 {
5318 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5319 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
5320
5321 if (vif->p2p || vif->type != NL80211_IFTYPE_AP ||
5322 !mvmvif->ap_ibss_active || !vif->bss_conf.ftm_responder)
5323 return -EINVAL;
5324
5325 mutex_lock(&mvm->mutex);
5326 *stats = mvm->ftm_resp_stats;
5327 mutex_unlock(&mvm->mutex);
5328
5329 stats->filled = BIT(NL80211_FTM_STATS_SUCCESS_NUM) |
5330 BIT(NL80211_FTM_STATS_PARTIAL_NUM) |
5331 BIT(NL80211_FTM_STATS_FAILED_NUM) |
5332 BIT(NL80211_FTM_STATS_ASAP_NUM) |
5333 BIT(NL80211_FTM_STATS_NON_ASAP_NUM) |
5334 BIT(NL80211_FTM_STATS_TOTAL_DURATION_MSEC) |
5335 BIT(NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM) |
5336 BIT(NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM) |
5337 BIT(NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM);
5338
5339 return 0;
5340 }
5341
iwl_mvm_start_pmsr(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_pmsr_request * request)5342 static int iwl_mvm_start_pmsr(struct ieee80211_hw *hw,
5343 struct ieee80211_vif *vif,
5344 struct cfg80211_pmsr_request *request)
5345 {
5346 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5347 int ret;
5348
5349 mutex_lock(&mvm->mutex);
5350 ret = iwl_mvm_ftm_start(mvm, vif, request);
5351 mutex_unlock(&mvm->mutex);
5352
5353 return ret;
5354 }
5355
iwl_mvm_abort_pmsr(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_pmsr_request * request)5356 static void iwl_mvm_abort_pmsr(struct ieee80211_hw *hw,
5357 struct ieee80211_vif *vif,
5358 struct cfg80211_pmsr_request *request)
5359 {
5360 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5361
5362 mutex_lock(&mvm->mutex);
5363 iwl_mvm_ftm_abort(mvm, request);
5364 mutex_unlock(&mvm->mutex);
5365 }
5366
iwl_mvm_can_hw_csum(struct sk_buff * skb)5367 static bool iwl_mvm_can_hw_csum(struct sk_buff *skb)
5368 {
5369 u8 protocol = ip_hdr(skb)->protocol;
5370
5371 if (!IS_ENABLED(CONFIG_INET))
5372 return false;
5373
5374 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP;
5375 }
5376
iwl_mvm_mac_can_aggregate(struct ieee80211_hw * hw,struct sk_buff * head,struct sk_buff * skb)5377 static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw,
5378 struct sk_buff *head,
5379 struct sk_buff *skb)
5380 {
5381 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5382
5383 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ)
5384 return iwl_mvm_tx_csum_bz(mvm, head, true) ==
5385 iwl_mvm_tx_csum_bz(mvm, skb, true);
5386
5387 /* For now don't aggregate IPv6 in AMSDU */
5388 if (skb->protocol != htons(ETH_P_IP))
5389 return false;
5390
5391 if (!iwl_mvm_is_csum_supported(mvm))
5392 return true;
5393
5394 return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head);
5395 }
5396
5397 const struct ieee80211_ops iwl_mvm_hw_ops = {
5398 .tx = iwl_mvm_mac_tx,
5399 .wake_tx_queue = iwl_mvm_mac_wake_tx_queue,
5400 .ampdu_action = iwl_mvm_mac_ampdu_action,
5401 .get_antenna = iwl_mvm_op_get_antenna,
5402 .start = iwl_mvm_mac_start,
5403 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
5404 .stop = iwl_mvm_mac_stop,
5405 .add_interface = iwl_mvm_mac_add_interface,
5406 .remove_interface = iwl_mvm_mac_remove_interface,
5407 .config = iwl_mvm_mac_config,
5408 .prepare_multicast = iwl_mvm_prepare_multicast,
5409 .configure_filter = iwl_mvm_configure_filter,
5410 .config_iface_filter = iwl_mvm_config_iface_filter,
5411 .bss_info_changed = iwl_mvm_bss_info_changed,
5412 .hw_scan = iwl_mvm_mac_hw_scan,
5413 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
5414 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
5415 .sta_state = iwl_mvm_mac_sta_state,
5416 .sta_notify = iwl_mvm_mac_sta_notify,
5417 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
5418 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
5419 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
5420 .sta_rc_update = iwl_mvm_sta_rc_update,
5421 .conf_tx = iwl_mvm_mac_conf_tx,
5422 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
5423 .mgd_complete_tx = iwl_mvm_mac_mgd_complete_tx,
5424 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
5425 .flush = iwl_mvm_mac_flush,
5426 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
5427 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
5428 .set_key = iwl_mvm_mac_set_key,
5429 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
5430 .remain_on_channel = iwl_mvm_roc,
5431 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
5432 .add_chanctx = iwl_mvm_add_chanctx,
5433 .remove_chanctx = iwl_mvm_remove_chanctx,
5434 .change_chanctx = iwl_mvm_change_chanctx,
5435 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
5436 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
5437 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
5438
5439 .start_ap = iwl_mvm_start_ap,
5440 .stop_ap = iwl_mvm_stop_ap,
5441 .join_ibss = iwl_mvm_start_ibss,
5442 .leave_ibss = iwl_mvm_stop_ibss,
5443
5444 .tx_last_beacon = iwl_mvm_tx_last_beacon,
5445
5446 .set_tim = iwl_mvm_set_tim,
5447
5448 .channel_switch = iwl_mvm_channel_switch,
5449 .pre_channel_switch = iwl_mvm_pre_channel_switch,
5450 .post_channel_switch = iwl_mvm_post_channel_switch,
5451 .abort_channel_switch = iwl_mvm_abort_channel_switch,
5452 .channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon,
5453
5454 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
5455 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
5456 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
5457
5458 .event_callback = iwl_mvm_mac_event_callback,
5459
5460 .sync_rx_queues = iwl_mvm_sync_rx_queues,
5461
5462 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
5463
5464 #ifdef CONFIG_PM_SLEEP
5465 /* look at d3.c */
5466 .suspend = iwl_mvm_suspend,
5467 .resume = iwl_mvm_resume,
5468 .set_wakeup = iwl_mvm_set_wakeup,
5469 .set_rekey_data = iwl_mvm_set_rekey_data,
5470 #if IS_ENABLED(CONFIG_IPV6)
5471 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
5472 #endif
5473 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
5474 #endif
5475 .get_survey = iwl_mvm_mac_get_survey,
5476 .sta_statistics = iwl_mvm_mac_sta_statistics,
5477 .get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats,
5478 .start_pmsr = iwl_mvm_start_pmsr,
5479 .abort_pmsr = iwl_mvm_abort_pmsr,
5480
5481 .can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate,
5482 #ifdef CONFIG_IWLWIFI_DEBUGFS
5483 .sta_add_debugfs = iwl_mvm_sta_add_debugfs,
5484 #endif
5485 };
5486