1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *****************************************************************************/
65 #include <linux/kernel.h>
66 #include <linux/slab.h>
67 #include <linux/skbuff.h>
68 #include <linux/netdevice.h>
69 #include <linux/etherdevice.h>
71 #include <linux/if_arp.h>
72 #include <linux/devcoredump.h>
73 #include <linux/time.h>
74 #include <net/mac80211.h>
75 #include <net/ieee80211_radiotap.h>
78 #include "iwl-op-mode.h"
82 #include "time-event.h"
83 #include "iwl-eeprom-parse.h"
84 #include "iwl-phy-db.h"
86 #include "iwl-fw-error-dump.h"
89 #include "iwl-nvm-parse.h"
92 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
95 .types = BIT(NL80211_IFTYPE_STATION),
99 .types = BIT(NL80211_IFTYPE_AP) |
100 BIT(NL80211_IFTYPE_P2P_CLIENT) |
101 BIT(NL80211_IFTYPE_P2P_GO),
105 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
109 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
111 .num_different_channels = 2,
113 .limits = iwl_mvm_limits,
114 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
118 #ifdef CONFIG_PM_SLEEP
119 static const struct nl80211_wowlan_tcp_data_token_feature
120 iwl_mvm_wowlan_tcp_token_feature = {
123 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
126 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
127 .tok = &iwl_mvm_wowlan_tcp_token_feature,
128 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
129 sizeof(struct ethhdr) -
130 sizeof(struct iphdr) -
131 sizeof(struct tcphdr),
132 .data_interval_max = 65535, /* __le16 in API */
133 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
134 sizeof(struct ethhdr) -
135 sizeof(struct iphdr) -
136 sizeof(struct tcphdr),
141 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
143 * Use the reserved field to indicate magic values.
144 * these values will only be used internally by the driver,
145 * and won't make it to the fw (reserved will be 0).
146 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
147 * be the vif's ip address. in case there is not a single
148 * ip address (0, or more than 1), this attribute will
150 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
151 * the LSB bytes of the vif's mac address
154 BC_FILTER_MAGIC_NONE = 0,
159 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
163 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
166 /* frame type - arp, hw type - ethernet */
168 BCAST_FILTER_OFFSET_PAYLOAD_START,
169 .offset = sizeof(rfc1042_header),
170 .val = cpu_to_be32(0x08060001),
171 .mask = cpu_to_be32(0xffffffff),
176 BCAST_FILTER_OFFSET_PAYLOAD_START,
177 .offset = sizeof(rfc1042_header) + 2 +
178 sizeof(struct arphdr) +
179 ETH_ALEN + sizeof(__be32) +
181 .mask = cpu_to_be32(0xffffffff),
182 /* mark it as special field */
183 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
188 /* dhcp offer bcast */
190 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
193 /* udp dest port - 68 (bootp client)*/
194 .offset_type = BCAST_FILTER_OFFSET_IP_END,
195 .offset = offsetof(struct udphdr, dest),
196 .val = cpu_to_be32(0x00440000),
197 .mask = cpu_to_be32(0xffff0000),
200 /* dhcp - lsb bytes of client hw address */
201 .offset_type = BCAST_FILTER_OFFSET_IP_END,
203 .mask = cpu_to_be32(0xffffffff),
204 /* mark it as special field */
205 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
209 /* last filter must be empty */
214 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
216 if (!iwl_mvm_is_d0i3_supported(mvm))
219 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
220 spin_lock_bh(&mvm->refs_lock);
221 mvm->refs[ref_type]++;
222 spin_unlock_bh(&mvm->refs_lock);
223 iwl_trans_ref(mvm->trans);
226 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
228 if (!iwl_mvm_is_d0i3_supported(mvm))
231 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
232 spin_lock_bh(&mvm->refs_lock);
233 WARN_ON(!mvm->refs[ref_type]--);
234 spin_unlock_bh(&mvm->refs_lock);
235 iwl_trans_unref(mvm->trans);
238 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
239 enum iwl_mvm_ref_type except_ref)
243 if (!iwl_mvm_is_d0i3_supported(mvm))
246 spin_lock_bh(&mvm->refs_lock);
247 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
248 if (except_ref == i || !mvm->refs[i])
251 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
253 for (j = 0; j < mvm->refs[i]; j++)
254 iwl_trans_unref(mvm->trans);
257 spin_unlock_bh(&mvm->refs_lock);
260 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
265 if (!iwl_mvm_is_d0i3_supported(mvm))
268 spin_lock_bh(&mvm->refs_lock);
269 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
275 spin_unlock_bh(&mvm->refs_lock);
280 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
282 iwl_mvm_ref(mvm, ref_type);
284 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
285 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
288 iwl_mvm_unref(mvm, ref_type);
295 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
299 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
300 for (i = 0; i < NUM_PHY_CTX; i++) {
301 mvm->phy_ctxts[i].id = i;
302 mvm->phy_ctxts[i].ref = 0;
306 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
308 enum iwl_mcc_source src_id,
311 struct ieee80211_regdomain *regd = NULL;
312 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
313 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
314 struct iwl_mcc_update_resp *resp;
316 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
318 lockdep_assert_held(&mvm->mutex);
320 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
321 if (IS_ERR_OR_NULL(resp)) {
322 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
323 PTR_ERR_OR_ZERO(resp));
328 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
330 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
331 __le32_to_cpu(resp->n_channels),
333 __le16_to_cpu(resp->mcc));
334 /* Store the return source id */
335 src_id = resp->source_id;
337 if (IS_ERR_OR_NULL(regd)) {
338 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
339 PTR_ERR_OR_ZERO(regd));
343 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
344 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
345 mvm->lar_regdom_set = true;
346 mvm->mcc_src = src_id;
352 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
355 struct ieee80211_regdomain *regd;
357 if (!iwl_mvm_is_lar_supported(mvm))
360 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
361 if (!IS_ERR_OR_NULL(regd)) {
362 /* only update the regulatory core if changed */
364 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
370 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
373 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
374 iwl_mvm_is_wifi_mcc_supported(mvm) ?
375 MCC_SOURCE_GET_CURRENT :
376 MCC_SOURCE_OLD_FW, changed);
379 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
381 enum iwl_mcc_source used_src;
382 struct ieee80211_regdomain *regd;
385 const struct ieee80211_regdomain *r =
386 rtnl_dereference(mvm->hw->wiphy->regd);
391 /* save the last source in case we overwrite it below */
392 used_src = mvm->mcc_src;
393 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
394 /* Notify the firmware we support wifi location updates */
395 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
396 if (!IS_ERR_OR_NULL(regd))
400 /* Now set our last stored MCC and source */
401 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
403 if (IS_ERR_OR_NULL(regd))
406 /* update cfg80211 if the regdomain was changed */
408 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
416 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
418 struct ieee80211_hw *hw = mvm->hw;
420 static const u32 mvm_ciphers[] = {
421 WLAN_CIPHER_SUITE_WEP40,
422 WLAN_CIPHER_SUITE_WEP104,
423 WLAN_CIPHER_SUITE_TKIP,
424 WLAN_CIPHER_SUITE_CCMP,
427 /* Tell mac80211 our characteristics */
428 ieee80211_hw_set(hw, SIGNAL_DBM);
429 ieee80211_hw_set(hw, SPECTRUM_MGMT);
430 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
431 ieee80211_hw_set(hw, QUEUE_CONTROL);
432 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
433 ieee80211_hw_set(hw, SUPPORTS_PS);
434 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
435 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
436 ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
437 ieee80211_hw_set(hw, CONNECTION_MONITOR);
438 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
439 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
440 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
442 hw->queues = mvm->first_agg_queue;
443 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
444 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
445 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
446 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
447 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
448 hw->rate_control_algorithm = "iwl-mvm-rs";
449 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
450 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
452 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2);
453 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
454 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
455 hw->wiphy->cipher_suites = mvm->ciphers;
458 * Enable 11w if advertised by firmware and software crypto
459 * is not enabled (as the firmware will interpret some mgmt
460 * packets, so enabling it with software crypto isn't safe)
462 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
463 !iwlwifi_mod_params.sw_crypto) {
464 ieee80211_hw_set(hw, MFP_CAPABLE);
465 mvm->ciphers[hw->wiphy->n_cipher_suites] =
466 WLAN_CIPHER_SUITE_AES_CMAC;
467 hw->wiphy->n_cipher_suites++;
470 /* currently FW API supports only one optional cipher scheme */
471 if (mvm->fw->cs[0].cipher) {
472 mvm->hw->n_cipher_schemes = 1;
473 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
474 mvm->ciphers[hw->wiphy->n_cipher_suites] =
475 mvm->fw->cs[0].cipher;
476 hw->wiphy->n_cipher_suites++;
479 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
480 hw->wiphy->features |=
481 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
482 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
483 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
485 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
486 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
487 hw->chanctx_data_size = sizeof(u16);
489 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
490 BIT(NL80211_IFTYPE_P2P_CLIENT) |
491 BIT(NL80211_IFTYPE_AP) |
492 BIT(NL80211_IFTYPE_P2P_GO) |
493 BIT(NL80211_IFTYPE_P2P_DEVICE) |
494 BIT(NL80211_IFTYPE_ADHOC);
496 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
497 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
498 if (iwl_mvm_is_lar_supported(mvm))
499 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
501 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
502 REGULATORY_DISABLE_BEACON_HINTS;
504 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
505 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
507 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
509 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
510 hw->wiphy->n_iface_combinations =
511 ARRAY_SIZE(iwl_mvm_iface_combinations);
513 hw->wiphy->max_remain_on_channel_duration = 10000;
514 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
515 /* we can compensate an offset of up to 3 channels = 15 MHz */
516 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
518 /* Extract MAC address */
519 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
520 hw->wiphy->addresses = mvm->addresses;
521 hw->wiphy->n_addresses = 1;
523 /* Extract additional MAC addresses if available */
524 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
525 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
527 for (i = 1; i < num_mac; i++) {
528 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
530 mvm->addresses[i].addr[5]++;
531 hw->wiphy->n_addresses++;
534 iwl_mvm_reset_phy_ctxts(mvm);
536 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
538 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
540 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
541 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
542 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
544 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
545 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
547 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
549 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
550 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
551 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
552 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
553 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
554 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
556 if (fw_has_capa(&mvm->fw->ucode_capa,
557 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
558 fw_has_api(&mvm->fw->ucode_capa,
559 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
560 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
561 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
564 hw->wiphy->hw_version = mvm->trans->hw_id;
566 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
567 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
569 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
571 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
572 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
573 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
574 /* we create the 802.11 header and zero length SSID IE. */
575 hw->wiphy->max_sched_scan_ie_len =
576 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
577 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
578 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
581 * the firmware uses u8 for num of iterations, but 0xff is saved for
582 * infinite loop, so the maximum number of iterations is actually 254.
584 hw->wiphy->max_sched_scan_plan_iterations = 254;
586 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
587 NL80211_FEATURE_LOW_PRIORITY_SCAN |
588 NL80211_FEATURE_P2P_GO_OPPPS |
589 NL80211_FEATURE_DYNAMIC_SMPS |
590 NL80211_FEATURE_STATIC_SMPS |
591 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
593 if (fw_has_capa(&mvm->fw->ucode_capa,
594 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
595 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
596 if (fw_has_capa(&mvm->fw->ucode_capa,
597 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
598 hw->wiphy->features |= NL80211_FEATURE_QUIET;
600 if (fw_has_capa(&mvm->fw->ucode_capa,
601 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
602 hw->wiphy->features |=
603 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
605 if (fw_has_capa(&mvm->fw->ucode_capa,
606 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
607 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
609 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
611 #ifdef CONFIG_PM_SLEEP
612 if (iwl_mvm_is_d0i3_supported(mvm) &&
613 device_can_wakeup(mvm->trans->dev)) {
614 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
615 hw->wiphy->wowlan = &mvm->wowlan;
618 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
619 mvm->trans->ops->d3_suspend &&
620 mvm->trans->ops->d3_resume &&
621 device_can_wakeup(mvm->trans->dev)) {
622 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
623 WIPHY_WOWLAN_DISCONNECT |
624 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
625 WIPHY_WOWLAN_RFKILL_RELEASE |
626 WIPHY_WOWLAN_NET_DETECT;
627 if (!iwlwifi_mod_params.sw_crypto)
628 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
629 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
630 WIPHY_WOWLAN_4WAY_HANDSHAKE;
632 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
633 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
634 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
635 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
636 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
637 hw->wiphy->wowlan = &mvm->wowlan;
641 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
642 /* assign default bcast filtering configuration */
643 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
646 ret = iwl_mvm_leds_init(mvm);
650 if (fw_has_capa(&mvm->fw->ucode_capa,
651 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
652 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
653 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
654 ieee80211_hw_set(hw, TDLS_WIDER_BW);
657 if (fw_has_capa(&mvm->fw->ucode_capa,
658 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
659 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
660 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
663 hw->netdev_features |= mvm->cfg->features;
664 if (!iwl_mvm_is_csum_supported(mvm))
665 hw->netdev_features &= ~NETIF_F_RXCSUM;
667 ret = ieee80211_register_hw(mvm->hw);
669 iwl_mvm_leds_exit(mvm);
674 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
675 struct ieee80211_sta *sta,
678 struct iwl_mvm_sta *mvmsta;
682 * double check the IN_D0I3 flag both before and after
683 * taking the spinlock, in order to prevent taking
684 * the spinlock when not needed.
686 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
689 spin_lock(&mvm->d0i3_tx_lock);
691 * testing the flag again ensures the skb dequeue
692 * loop (on d0i3 exit) hasn't run yet.
694 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
697 mvmsta = iwl_mvm_sta_from_mac80211(sta);
698 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
699 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
702 __skb_queue_tail(&mvm->d0i3_tx, skb);
703 ieee80211_stop_queues(mvm->hw);
706 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
707 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
711 spin_unlock(&mvm->d0i3_tx_lock);
715 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
716 struct ieee80211_tx_control *control,
719 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
720 struct ieee80211_sta *sta = control->sta;
721 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
722 struct ieee80211_hdr *hdr = (void *)skb->data;
724 if (iwl_mvm_is_radio_killed(mvm)) {
725 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
729 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
730 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
731 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
734 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
735 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
736 ieee80211_is_mgmt(hdr->frame_control) &&
737 !ieee80211_is_deauth(hdr->frame_control) &&
738 !ieee80211_is_disassoc(hdr->frame_control) &&
739 !ieee80211_is_action(hdr->frame_control)))
743 if (iwl_mvm_defer_tx(mvm, sta, skb))
745 if (iwl_mvm_tx_skb(mvm, skb, sta))
750 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
754 ieee80211_free_txskb(hw, skb);
757 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
759 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
764 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
766 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
768 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
771 /* enabled by default */
775 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
777 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
779 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
783 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
784 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
785 enum ieee80211_ampdu_mlme_action action)
787 struct iwl_fw_dbg_trigger_tlv *trig;
788 struct iwl_fw_dbg_trigger_ba *ba_trig;
790 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
793 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
794 ba_trig = (void *)trig->data;
796 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
800 case IEEE80211_AMPDU_TX_OPERATIONAL: {
801 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
802 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
804 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
805 "TX AGG START: MAC %pM tid %d ssn %d\n",
806 sta->addr, tid, tid_data->ssn);
809 case IEEE80211_AMPDU_TX_STOP_CONT:
810 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
811 "TX AGG STOP: MAC %pM tid %d\n",
814 case IEEE80211_AMPDU_RX_START:
815 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
816 "RX AGG START: MAC %pM tid %d ssn %d\n",
817 sta->addr, tid, rx_ba_ssn);
819 case IEEE80211_AMPDU_RX_STOP:
820 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
821 "RX AGG STOP: MAC %pM tid %d\n",
829 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
830 struct ieee80211_vif *vif,
831 enum ieee80211_ampdu_mlme_action action,
832 struct ieee80211_sta *sta, u16 tid,
833 u16 *ssn, u8 buf_size, bool amsdu)
835 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
837 bool tx_agg_ref = false;
839 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
840 sta->addr, tid, action);
842 if (!(mvm->nvm_data->sku_cap_11n_enable))
845 /* return from D0i3 before starting a new Tx aggregation */
847 case IEEE80211_AMPDU_TX_START:
848 case IEEE80211_AMPDU_TX_STOP_CONT:
849 case IEEE80211_AMPDU_TX_STOP_FLUSH:
850 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
851 case IEEE80211_AMPDU_TX_OPERATIONAL:
853 * for tx start, wait synchronously until D0i3 exit to
854 * get the correct sequence number for the tid.
855 * additionally, some other ampdu actions use direct
856 * target access, which is not handled automatically
857 * by the trans layer (unlike commands), so wait for
858 * d0i3 exit in these cases as well.
860 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
870 mutex_lock(&mvm->mutex);
873 case IEEE80211_AMPDU_RX_START:
874 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
878 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
880 case IEEE80211_AMPDU_RX_STOP:
881 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
883 case IEEE80211_AMPDU_TX_START:
884 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
888 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
890 case IEEE80211_AMPDU_TX_STOP_CONT:
891 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
893 case IEEE80211_AMPDU_TX_STOP_FLUSH:
894 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
895 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
897 case IEEE80211_AMPDU_TX_OPERATIONAL:
898 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
909 if (action == IEEE80211_AMPDU_RX_START)
912 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
915 mutex_unlock(&mvm->mutex);
918 * If the tid is marked as started, we won't use it for offloaded
919 * traffic on the next D0i3 entry. It's safe to unref.
922 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
927 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
928 struct ieee80211_vif *vif)
930 struct iwl_mvm *mvm = data;
931 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
933 mvmvif->uploaded = false;
934 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
936 spin_lock_bh(&mvm->time_event_lock);
937 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
938 spin_unlock_bh(&mvm->time_event_lock);
940 mvmvif->phy_ctxt = NULL;
941 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
944 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
946 /* clear the D3 reconfig, we only need it to avoid dumping a
947 * firmware coredump on reconfiguration, we shouldn't do that
948 * on D3->D0 transition
950 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
951 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
952 iwl_mvm_fw_error_dump(mvm);
955 /* cleanup all stale references (scan, roc), but keep the
956 * ucode_down ref until reconfig is complete
958 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
960 iwl_trans_stop_device(mvm->trans);
962 mvm->scan_status = 0;
963 mvm->ps_disabled = false;
964 mvm->calibrating = false;
966 /* just in case one was running */
967 ieee80211_remain_on_channel_expired(mvm->hw);
970 * cleanup all interfaces, even inactive ones, as some might have
971 * gone down during the HW restart
973 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
975 mvm->p2p_device_vif = NULL;
976 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
978 iwl_mvm_reset_phy_ctxts(mvm);
979 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
980 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
981 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
982 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
983 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
984 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
985 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
986 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
988 ieee80211_wake_queues(mvm->hw);
990 /* clear any stale d0i3 state */
991 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
994 mvm->rx_ba_sessions = 0;
995 mvm->fw_dbg_conf = FW_DBG_INVALID;
996 mvm->scan_type = IWL_SCAN_TYPE_NOT_SET;
998 /* keep statistics ticking */
999 iwl_mvm_accu_radio_stats(mvm);
1002 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1006 lockdep_assert_held(&mvm->mutex);
1008 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1009 /* Clean up some internal and mac80211 state on restart */
1010 iwl_mvm_restart_cleanup(mvm);
1012 /* Hold the reference to prevent runtime suspend while
1013 * the start procedure runs. It's a bit confusing
1014 * that the UCODE_DOWN reference is taken, but it just
1015 * means "UCODE is not UP yet". ( TODO: rename this
1018 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1020 ret = iwl_mvm_up(mvm);
1022 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1023 /* Something went wrong - we need to finish some cleanup
1024 * that normally iwl_mvm_mac_restart_complete() below
1027 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1028 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1034 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1036 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1039 /* Some hw restart cleanups must not hold the mutex */
1040 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1042 * Make sure we are out of d0i3. This is needed
1043 * to make sure the reference accounting is correct
1044 * (and there is no stale d0i3_exit_work).
1046 wait_event_timeout(mvm->d0i3_exit_waitq,
1047 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1052 mutex_lock(&mvm->mutex);
1053 ret = __iwl_mvm_mac_start(mvm);
1054 mutex_unlock(&mvm->mutex);
1059 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1063 mutex_lock(&mvm->mutex);
1065 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1066 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1067 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1069 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1072 /* allow transport/FW low power modes */
1073 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1076 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1077 * of packets the FW sent out, so we must reconnect.
1079 iwl_mvm_teardown_tdls_peers(mvm);
1081 mutex_unlock(&mvm->mutex);
1084 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1086 if (!iwl_mvm_is_d0i3_supported(mvm))
1089 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1090 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1091 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1094 WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1098 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1099 enum ieee80211_reconfig_type reconfig_type)
1101 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1103 switch (reconfig_type) {
1104 case IEEE80211_RECONFIG_TYPE_RESTART:
1105 iwl_mvm_restart_complete(mvm);
1107 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1108 iwl_mvm_resume_complete(mvm);
1113 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1115 lockdep_assert_held(&mvm->mutex);
1117 /* firmware counters are obviously reset now, but we shouldn't
1118 * partially track so also clear the fw_reset_accu counters.
1120 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1122 /* async_handlers_wk is now blocked */
1125 * The work item could be running or queued if the
1126 * ROC time event stops just as we get here.
1128 flush_work(&mvm->roc_done_wk);
1130 iwl_trans_stop_device(mvm->trans);
1132 iwl_mvm_async_handlers_purge(mvm);
1133 /* async_handlers_list is empty and will stay empty: HW is stopped */
1135 /* the fw is stopped, the aux sta is dead: clean up driver state */
1136 iwl_mvm_del_aux_sta(mvm);
1139 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1140 * won't be called in this case).
1141 * But make sure to cleanup interfaces that have gone down before/during
1142 * HW restart was requested.
1144 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1145 ieee80211_iterate_interfaces(mvm->hw, 0,
1146 iwl_mvm_cleanup_iterator, mvm);
1148 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1149 * make sure there's nothing left there and warn if any is found.
1151 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1154 for (i = 0; i < mvm->max_scans; i++) {
1155 if (WARN_ONCE(mvm->scan_uid_status[i],
1156 "UMAC scan UID %d status was not cleaned\n",
1158 mvm->scan_uid_status[i] = 0;
1162 mvm->ucode_loaded = false;
1165 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1167 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1169 flush_work(&mvm->d0i3_exit_work);
1170 flush_work(&mvm->async_handlers_wk);
1171 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1172 iwl_mvm_free_fw_dump_desc(mvm);
1174 mutex_lock(&mvm->mutex);
1175 __iwl_mvm_mac_stop(mvm);
1176 mutex_unlock(&mvm->mutex);
1179 * The worker might have been waiting for the mutex, let it run and
1180 * discover that its list is now empty.
1182 cancel_work_sync(&mvm->async_handlers_wk);
1185 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1189 lockdep_assert_held(&mvm->mutex);
1191 for (i = 0; i < NUM_PHY_CTX; i++)
1192 if (!mvm->phy_ctxts[i].ref)
1193 return &mvm->phy_ctxts[i];
1195 IWL_ERR(mvm, "No available PHY context\n");
1199 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1202 struct iwl_dev_tx_power_cmd cmd = {
1203 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1204 .v2.mac_context_id =
1205 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1206 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1208 int len = sizeof(cmd);
1210 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1211 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1213 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1214 len = sizeof(cmd.v2);
1216 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1219 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1220 struct ieee80211_vif *vif)
1222 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1223 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1229 * make sure D0i3 exit is completed, otherwise a target access
1230 * during tx queue configuration could be done when still in
1233 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1238 * Not much to do here. The stack will not allow interface
1239 * types or combinations that we didn't advertise, so we
1240 * don't really have to check the types.
1243 mutex_lock(&mvm->mutex);
1245 /* make sure that beacon statistics don't go backwards with FW reset */
1246 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1247 mvmvif->beacon_stats.accu_num_beacons +=
1248 mvmvif->beacon_stats.num_beacons;
1250 /* Allocate resources for the MAC context, and add it to the fw */
1251 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1255 /* Counting number of interfaces is needed for legacy PM */
1256 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1260 * The AP binding flow can be done only after the beacon
1261 * template is configured (which happens only in the mac80211
1262 * start_ap() flow), and adding the broadcast station can happen
1263 * only after the binding.
1264 * In addition, since modifying the MAC before adding a bcast
1265 * station is not allowed by the FW, delay the adding of MAC context to
1266 * the point where we can also add the bcast station.
1267 * In short: there's not much we can do at this point, other than
1268 * allocating resources :)
1270 if (vif->type == NL80211_IFTYPE_AP ||
1271 vif->type == NL80211_IFTYPE_ADHOC) {
1272 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1274 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1278 iwl_mvm_vif_dbgfs_register(mvm, vif);
1282 mvmvif->features |= hw->netdev_features;
1284 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1288 ret = iwl_mvm_power_update_mac(mvm);
1290 goto out_remove_mac;
1292 /* beacon filtering */
1293 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1295 goto out_remove_mac;
1297 if (!mvm->bf_allowed_vif &&
1298 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1299 mvm->bf_allowed_vif = mvmvif;
1300 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1301 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1305 * P2P_DEVICE interface does not have a channel context assigned to it,
1306 * so a dedicated PHY context is allocated to it and the corresponding
1307 * MAC context is bound to it at this stage.
1309 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1311 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1312 if (!mvmvif->phy_ctxt) {
1317 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1318 ret = iwl_mvm_binding_add_vif(mvm, vif);
1322 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1326 /* Save a pointer to p2p device vif, so it can later be used to
1327 * update the p2p device MAC when a GO is started/stopped */
1328 mvm->p2p_device_vif = vif;
1331 iwl_mvm_vif_dbgfs_register(mvm, vif);
1335 iwl_mvm_binding_remove_vif(mvm, vif);
1337 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1339 if (mvm->bf_allowed_vif == mvmvif) {
1340 mvm->bf_allowed_vif = NULL;
1341 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1342 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1345 mvmvif->phy_ctxt = NULL;
1346 iwl_mvm_mac_ctxt_remove(mvm, vif);
1348 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1351 iwl_mvm_mac_ctxt_release(mvm, vif);
1353 mutex_unlock(&mvm->mutex);
1355 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1360 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1361 struct ieee80211_vif *vif)
1363 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1367 * mac80211 first removes all the stations of the vif and
1368 * then removes the vif. When it removes a station it also
1369 * flushes the AMPDU session. So by now, all the AMPDU sessions
1370 * of all the stations of this vif are closed, and the queues
1371 * of these AMPDU sessions are properly closed.
1372 * We still need to take care of the shared queues of the vif.
1375 mutex_lock(&mvm->mutex);
1376 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1377 mutex_unlock(&mvm->mutex);
1380 * There are transports that buffer a few frames in the host.
1381 * For these, the flush above isn't enough since while we were
1382 * flushing, the transport might have sent more frames to the
1383 * device. To solve this, wait here until the transport is
1384 * empty. Technically, this could have replaced the flush
1385 * above, but flush is much faster than draining. So flush
1386 * first, and drain to make sure we have no frames in the
1387 * transport anymore.
1388 * If a station still had frames on the shared queues, it is
1389 * already marked as draining, so to complete the draining, we
1390 * just need to wait until the transport is empty.
1392 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1395 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1397 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1398 * We assume here that all the packets sent to the OFFCHANNEL
1399 * queue are sent in ROC session.
1401 flush_work(&mvm->roc_done_wk);
1404 * By now, all the AC queues are empty. The AGG queues are
1405 * empty too. We already got all the Tx responses for all the
1406 * packets in the queues. The drain work can have been
1407 * triggered. Flush it.
1409 flush_work(&mvm->sta_drained_wk);
1413 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1414 struct ieee80211_vif *vif)
1416 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1417 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1419 iwl_mvm_prepare_mac_removal(mvm, vif);
1421 mutex_lock(&mvm->mutex);
1423 if (mvm->bf_allowed_vif == mvmvif) {
1424 mvm->bf_allowed_vif = NULL;
1425 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1426 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1429 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1432 * For AP/GO interface, the tear down of the resources allocated to the
1433 * interface is be handled as part of the stop_ap flow.
1435 if (vif->type == NL80211_IFTYPE_AP ||
1436 vif->type == NL80211_IFTYPE_ADHOC) {
1437 #ifdef CONFIG_NL80211_TESTMODE
1438 if (vif == mvm->noa_vif) {
1439 mvm->noa_vif = NULL;
1440 mvm->noa_duration = 0;
1443 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1447 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1448 mvm->p2p_device_vif = NULL;
1449 iwl_mvm_rm_bcast_sta(mvm, vif);
1450 iwl_mvm_binding_remove_vif(mvm, vif);
1451 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1452 mvmvif->phy_ctxt = NULL;
1455 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1458 iwl_mvm_power_update_mac(mvm);
1459 iwl_mvm_mac_ctxt_remove(mvm, vif);
1462 iwl_mvm_mac_ctxt_release(mvm, vif);
1463 mutex_unlock(&mvm->mutex);
1466 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1471 struct iwl_mvm_mc_iter_data {
1472 struct iwl_mvm *mvm;
1476 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1477 struct ieee80211_vif *vif)
1479 struct iwl_mvm_mc_iter_data *data = _data;
1480 struct iwl_mvm *mvm = data->mvm;
1481 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1484 /* if we don't have free ports, mcast frames will be dropped */
1485 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1488 if (vif->type != NL80211_IFTYPE_STATION ||
1489 !vif->bss_conf.assoc)
1492 cmd->port_id = data->port_id++;
1493 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1494 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1496 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1498 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1501 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1503 struct iwl_mvm_mc_iter_data iter_data = {
1507 lockdep_assert_held(&mvm->mutex);
1509 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1512 ieee80211_iterate_active_interfaces_atomic(
1513 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1514 iwl_mvm_mc_iface_iterator, &iter_data);
1517 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1518 struct netdev_hw_addr_list *mc_list)
1520 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1521 struct iwl_mcast_filter_cmd *cmd;
1522 struct netdev_hw_addr *addr;
1527 addr_count = netdev_hw_addr_list_count(mc_list);
1528 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1529 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1533 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1534 cmd = kzalloc(len, GFP_ATOMIC);
1540 return (u64)(unsigned long)cmd;
1543 netdev_hw_addr_list_for_each(addr, mc_list) {
1544 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1545 cmd->count, addr->addr);
1546 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1547 addr->addr, ETH_ALEN);
1551 return (u64)(unsigned long)cmd;
1554 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1555 unsigned int changed_flags,
1556 unsigned int *total_flags,
1559 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1560 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1562 mutex_lock(&mvm->mutex);
1564 /* replace previous configuration */
1565 kfree(mvm->mcast_filter_cmd);
1566 mvm->mcast_filter_cmd = cmd;
1571 iwl_mvm_recalc_multicast(mvm);
1573 mutex_unlock(&mvm->mutex);
1577 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1578 struct ieee80211_vif *vif,
1579 unsigned int filter_flags,
1580 unsigned int changed_flags)
1582 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1584 /* We support only filter for probe requests */
1585 if (!(changed_flags & FIF_PROBE_REQ))
1588 /* Supported only for p2p client interfaces */
1589 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1593 mutex_lock(&mvm->mutex);
1594 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1595 mutex_unlock(&mvm->mutex);
1598 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1599 struct iwl_bcast_iter_data {
1600 struct iwl_mvm *mvm;
1601 struct iwl_bcast_filter_cmd *cmd;
1606 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1607 const struct iwl_fw_bcast_filter *in_filter,
1608 struct iwl_fw_bcast_filter *out_filter)
1610 struct iwl_fw_bcast_filter_attr *attr;
1613 memcpy(out_filter, in_filter, sizeof(*out_filter));
1615 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1616 attr = &out_filter->attrs[i];
1621 switch (attr->reserved1) {
1622 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1623 if (vif->bss_conf.arp_addr_cnt != 1) {
1628 attr->val = vif->bss_conf.arp_addr_list[0];
1630 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1631 attr->val = *(__be32 *)&vif->addr[2];
1636 attr->reserved1 = 0;
1637 out_filter->num_attrs++;
1641 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1642 struct ieee80211_vif *vif)
1644 struct iwl_bcast_iter_data *data = _data;
1645 struct iwl_mvm *mvm = data->mvm;
1646 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1647 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1648 struct iwl_fw_bcast_mac *bcast_mac;
1651 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1654 bcast_mac = &cmd->macs[mvmvif->id];
1657 * enable filtering only for associated stations, but not for P2P
1660 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1661 !vif->bss_conf.assoc)
1664 bcast_mac->default_discard = 1;
1666 /* copy all configured filters */
1667 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1669 * Make sure we don't exceed our filters limit.
1670 * if there is still a valid filter to be configured,
1671 * be on the safe side and just allow bcast for this mac.
1673 if (WARN_ON_ONCE(data->current_filter >=
1674 ARRAY_SIZE(cmd->filters))) {
1675 bcast_mac->default_discard = 0;
1676 bcast_mac->attached_filters = 0;
1680 iwl_mvm_set_bcast_filter(vif,
1681 &mvm->bcast_filters[i],
1682 &cmd->filters[data->current_filter]);
1684 /* skip current filter if it contains no attributes */
1685 if (!cmd->filters[data->current_filter].num_attrs)
1688 /* attach the filter to current mac */
1689 bcast_mac->attached_filters |=
1690 cpu_to_le16(BIT(data->current_filter));
1692 data->current_filter++;
1696 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1697 struct iwl_bcast_filter_cmd *cmd)
1699 struct iwl_bcast_iter_data iter_data = {
1704 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1707 memset(cmd, 0, sizeof(*cmd));
1708 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1709 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1711 #ifdef CONFIG_IWLWIFI_DEBUGFS
1712 /* use debugfs filters/macs if override is configured */
1713 if (mvm->dbgfs_bcast_filtering.override) {
1714 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1715 sizeof(cmd->filters));
1716 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1722 /* if no filters are configured, do nothing */
1723 if (!mvm->bcast_filters)
1726 /* configure and attach these filters for each associated sta vif */
1727 ieee80211_iterate_active_interfaces(
1728 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1729 iwl_mvm_bcast_filter_iterator, &iter_data);
1733 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1734 struct ieee80211_vif *vif)
1736 struct iwl_bcast_filter_cmd cmd;
1738 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1741 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1744 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1748 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1749 struct ieee80211_vif *vif)
1755 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1756 struct ieee80211_vif *vif,
1757 struct ieee80211_bss_conf *bss_conf,
1760 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1764 * Re-calculate the tsf id, as the master-slave relations depend on the
1765 * beacon interval, which was not known when the station interface was
1768 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1769 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1772 * If we're not associated yet, take the (new) BSSID before associating
1773 * so the firmware knows. If we're already associated, then use the old
1774 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1775 * branch for disassociation below.
1777 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1778 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1780 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1782 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1784 /* after sending it once, adopt mac80211 data */
1785 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1786 mvmvif->associated = bss_conf->assoc;
1788 if (changes & BSS_CHANGED_ASSOC) {
1789 if (bss_conf->assoc) {
1790 /* clear statistics to get clean beacon counter */
1791 iwl_mvm_request_statistics(mvm, true);
1792 memset(&mvmvif->beacon_stats, 0,
1793 sizeof(mvmvif->beacon_stats));
1795 /* add quota for this interface */
1796 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1798 IWL_ERR(mvm, "failed to update quotas\n");
1802 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1805 * If we're restarting then the firmware will
1806 * obviously have lost synchronisation with
1807 * the AP. It will attempt to synchronise by
1808 * itself, but we can make it more reliable by
1809 * scheduling a session protection time event.
1811 * The firmware needs to receive a beacon to
1812 * catch up with synchronisation, use 110% of
1813 * the beacon interval.
1815 * Set a large maximum delay to allow for more
1816 * than a single interface.
1818 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1819 iwl_mvm_protect_session(mvm, vif, dur, dur,
1823 iwl_mvm_sf_update(mvm, vif, false);
1824 iwl_mvm_power_vif_assoc(mvm, vif);
1826 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1827 iwl_mvm_update_smps(mvm, vif,
1828 IWL_MVM_SMPS_REQ_PROT,
1829 IEEE80211_SMPS_DYNAMIC);
1831 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1833 * If update fails - SF might be running in associated
1834 * mode while disassociated - which is forbidden.
1836 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1837 "Failed to update SF upon disassociation\n");
1839 /* remove AP station now that the MAC is unassoc */
1840 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1842 IWL_ERR(mvm, "failed to remove AP station\n");
1844 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1845 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1846 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1847 /* remove quota for this interface */
1848 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1850 IWL_ERR(mvm, "failed to update quotas\n");
1853 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1855 /* this will take the cleared BSSID from bss_conf */
1856 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1859 "failed to update MAC %pM (clear after unassoc)\n",
1863 iwl_mvm_recalc_multicast(mvm);
1864 iwl_mvm_configure_bcast_filter(mvm, vif);
1866 /* reset rssi values */
1867 mvmvif->bf_data.ave_beacon_signal = 0;
1869 iwl_mvm_bt_coex_vif_change(mvm);
1870 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1871 IEEE80211_SMPS_AUTOMATIC);
1872 if (fw_has_capa(&mvm->fw->ucode_capa,
1873 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1874 iwl_mvm_config_scan(mvm);
1875 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1877 * We received a beacon _after_ association so
1878 * remove the session protection.
1880 iwl_mvm_remove_time_event(mvm, mvmvif,
1881 &mvmvif->time_event_data);
1884 if (changes & BSS_CHANGED_BEACON_INFO) {
1885 iwl_mvm_sf_update(mvm, vif, false);
1886 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1889 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1890 ret = iwl_mvm_power_update_mac(mvm);
1892 IWL_ERR(mvm, "failed to update power mode\n");
1895 if (changes & BSS_CHANGED_TXPOWER) {
1896 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1898 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1901 if (changes & BSS_CHANGED_CQM) {
1902 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1903 /* reset cqm events tracking */
1904 mvmvif->bf_data.last_cqm_event = 0;
1905 if (mvmvif->bf_data.bf_enabled) {
1906 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1909 "failed to update CQM thresholds\n");
1913 if (changes & BSS_CHANGED_ARP_FILTER) {
1914 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1915 iwl_mvm_configure_bcast_filter(mvm, vif);
1919 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1920 struct ieee80211_vif *vif)
1922 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1923 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1927 * iwl_mvm_mac_ctxt_add() might read directly from the device
1928 * (the system time), so make sure it is available.
1930 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1934 mutex_lock(&mvm->mutex);
1936 /* Send the beacon template */
1937 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1942 * Re-calculate the tsf id, as the master-slave relations depend on the
1943 * beacon interval, which was not known when the AP interface was added.
1945 if (vif->type == NL80211_IFTYPE_AP)
1946 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1948 mvmvif->ap_assoc_sta_count = 0;
1950 /* Add the mac context */
1951 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1955 /* Perform the binding */
1956 ret = iwl_mvm_binding_add_vif(mvm, vif);
1960 /* Send the bcast station. At this stage the TBTT and DTIM time events
1961 * are added and applied to the scheduler */
1962 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1966 /* must be set before quota calculations */
1967 mvmvif->ap_ibss_active = true;
1969 /* power updated needs to be done before quotas */
1970 iwl_mvm_power_update_mac(mvm);
1972 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1974 goto out_quota_failed;
1976 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1977 if (vif->p2p && mvm->p2p_device_vif)
1978 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1980 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1982 iwl_mvm_bt_coex_vif_change(mvm);
1984 /* we don't support TDLS during DCM */
1985 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1986 iwl_mvm_teardown_tdls_peers(mvm);
1991 iwl_mvm_power_update_mac(mvm);
1992 mvmvif->ap_ibss_active = false;
1993 iwl_mvm_send_rm_bcast_sta(mvm, vif);
1995 iwl_mvm_binding_remove_vif(mvm, vif);
1997 iwl_mvm_mac_ctxt_remove(mvm, vif);
1999 mutex_unlock(&mvm->mutex);
2000 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2004 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2005 struct ieee80211_vif *vif)
2007 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2008 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2010 iwl_mvm_prepare_mac_removal(mvm, vif);
2012 mutex_lock(&mvm->mutex);
2014 /* Handle AP stop while in CSA */
2015 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2016 iwl_mvm_remove_time_event(mvm, mvmvif,
2017 &mvmvif->time_event_data);
2018 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2019 mvmvif->csa_countdown = false;
2022 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2023 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2024 mvm->csa_tx_block_bcn_timeout = 0;
2027 mvmvif->ap_ibss_active = false;
2028 mvm->ap_last_beacon_gp2 = 0;
2030 iwl_mvm_bt_coex_vif_change(mvm);
2032 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2034 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2035 if (vif->p2p && mvm->p2p_device_vif)
2036 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2038 iwl_mvm_update_quotas(mvm, false, NULL);
2039 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2040 iwl_mvm_binding_remove_vif(mvm, vif);
2042 iwl_mvm_power_update_mac(mvm);
2044 iwl_mvm_mac_ctxt_remove(mvm, vif);
2046 mutex_unlock(&mvm->mutex);
2050 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2051 struct ieee80211_vif *vif,
2052 struct ieee80211_bss_conf *bss_conf,
2055 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2057 /* Changes will be applied when the AP/IBSS is started */
2058 if (!mvmvif->ap_ibss_active)
2061 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2062 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2063 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2064 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2066 /* Need to send a new beacon template to the FW */
2067 if (changes & BSS_CHANGED_BEACON &&
2068 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2069 IWL_WARN(mvm, "Failed updating beacon data\n");
2071 if (changes & BSS_CHANGED_TXPOWER) {
2072 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2074 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2079 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2080 struct ieee80211_vif *vif,
2081 struct ieee80211_bss_conf *bss_conf,
2084 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2087 * iwl_mvm_bss_info_changed_station() might call
2088 * iwl_mvm_protect_session(), which reads directly from
2089 * the device (the system time), so make sure it is available.
2091 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2094 mutex_lock(&mvm->mutex);
2096 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2097 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2099 switch (vif->type) {
2100 case NL80211_IFTYPE_STATION:
2101 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2103 case NL80211_IFTYPE_AP:
2104 case NL80211_IFTYPE_ADHOC:
2105 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2108 /* shouldn't happen */
2112 mutex_unlock(&mvm->mutex);
2113 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2116 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2117 struct ieee80211_vif *vif,
2118 struct ieee80211_scan_request *hw_req)
2120 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2123 if (hw_req->req.n_channels == 0 ||
2124 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2127 mutex_lock(&mvm->mutex);
2128 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2129 mutex_unlock(&mvm->mutex);
2134 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2135 struct ieee80211_vif *vif)
2137 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2139 mutex_lock(&mvm->mutex);
2141 /* Due to a race condition, it's possible that mac80211 asks
2142 * us to stop a hw_scan when it's already stopped. This can
2143 * happen, for instance, if we stopped the scan ourselves,
2144 * called ieee80211_scan_completed() and the userspace called
2145 * cancel scan scan before ieee80211_scan_work() could run.
2146 * To handle that, simply return if the scan is not running.
2148 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2149 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2151 mutex_unlock(&mvm->mutex);
2155 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2156 struct ieee80211_sta *sta, u16 tids,
2158 enum ieee80211_frame_release_type reason,
2161 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2163 /* Called when we need to transmit (a) frame(s) from mac80211 */
2165 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2166 tids, more_data, false);
2170 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2171 struct ieee80211_sta *sta, u16 tids,
2173 enum ieee80211_frame_release_type reason,
2176 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2178 /* Called when we need to transmit (a) frame(s) from agg queue */
2180 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2181 tids, more_data, true);
2184 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2185 struct ieee80211_vif *vif,
2186 enum sta_notify_cmd cmd,
2187 struct ieee80211_sta *sta)
2189 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2190 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2191 unsigned long txqs = 0, tids = 0;
2194 spin_lock_bh(&mvmsta->lock);
2195 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2196 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2198 if (tid_data->state != IWL_AGG_ON &&
2199 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2202 __set_bit(tid_data->txq_id, &txqs);
2204 if (iwl_mvm_tid_queued(tid_data) == 0)
2207 __set_bit(tid, &tids);
2211 case STA_NOTIFY_SLEEP:
2212 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2213 ieee80211_sta_block_awake(hw, sta, true);
2215 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2216 ieee80211_sta_set_buffered(sta, tid, true);
2219 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2221 * The fw updates the STA to be asleep. Tx packets on the Tx
2222 * queues to this station will not be transmitted. The fw will
2223 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2226 case STA_NOTIFY_AWAKE:
2227 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2231 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2232 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2237 spin_unlock_bh(&mvmsta->lock);
2240 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2241 struct ieee80211_vif *vif,
2242 struct ieee80211_sta *sta)
2244 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2245 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2246 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2249 * This is called before mac80211 does RCU synchronisation,
2250 * so here we already invalidate our internal RCU-protected
2251 * station pointer. The rest of the code will thus no longer
2252 * be able to find the station this way, and we don't rely
2253 * on further RCU synchronisation after the sta_state()
2254 * callback deleted the station.
2256 mutex_lock(&mvm->mutex);
2257 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2258 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2261 if (mvm_sta->vif->type == NL80211_IFTYPE_AP) {
2262 mvmvif->ap_assoc_sta_count--;
2263 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2266 mutex_unlock(&mvm->mutex);
2269 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2272 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2275 if (iwlwifi_mod_params.uapsd_disable) {
2276 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2280 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2284 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2285 struct ieee80211_vif *vif, u8 *peer_addr,
2286 enum nl80211_tdls_operation action)
2288 struct iwl_fw_dbg_trigger_tlv *trig;
2289 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2291 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2294 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2295 tdls_trig = (void *)trig->data;
2296 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2299 if (!(tdls_trig->action_bitmap & BIT(action)))
2302 if (tdls_trig->peer_mode &&
2303 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2306 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2307 "TDLS event occurred, peer %pM, action %d",
2311 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2312 struct ieee80211_vif *vif,
2313 struct ieee80211_sta *sta,
2314 enum ieee80211_sta_state old_state,
2315 enum ieee80211_sta_state new_state)
2317 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2318 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2321 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2322 sta->addr, old_state, new_state);
2324 /* this would be a mac80211 bug ... but don't crash */
2325 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2328 /* if a STA is being removed, reuse its ID */
2329 flush_work(&mvm->sta_drained_wk);
2331 mutex_lock(&mvm->mutex);
2332 if (old_state == IEEE80211_STA_NOTEXIST &&
2333 new_state == IEEE80211_STA_NONE) {
2335 * Firmware bug - it'll crash if the beacon interval is less
2336 * than 16. We can't avoid connecting at all, so refuse the
2337 * station state change, this will cause mac80211 to abandon
2338 * attempts to connect to this AP, and eventually wpa_s will
2339 * blacklist the AP...
2341 if (vif->type == NL80211_IFTYPE_STATION &&
2342 vif->bss_conf.beacon_int < 16) {
2344 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2345 sta->addr, vif->bss_conf.beacon_int);
2352 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2353 IWL_MVM_TDLS_STA_COUNT ||
2354 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2355 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2360 ret = iwl_mvm_add_sta(mvm, vif, sta);
2361 if (sta->tdls && ret == 0) {
2362 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2363 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2364 NL80211_TDLS_SETUP);
2366 } else if (old_state == IEEE80211_STA_NONE &&
2367 new_state == IEEE80211_STA_AUTH) {
2369 * EBS may be disabled due to previous failures reported by FW.
2370 * Reset EBS status here assuming environment has been changed.
2372 mvm->last_ebs_successful = true;
2373 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2375 } else if (old_state == IEEE80211_STA_AUTH &&
2376 new_state == IEEE80211_STA_ASSOC) {
2377 ret = iwl_mvm_update_sta(mvm, vif, sta);
2379 iwl_mvm_rs_rate_init(mvm, sta,
2380 mvmvif->phy_ctxt->channel->band,
2382 } else if (old_state == IEEE80211_STA_ASSOC &&
2383 new_state == IEEE80211_STA_AUTHORIZED) {
2385 /* we don't support TDLS during DCM */
2386 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2387 iwl_mvm_teardown_tdls_peers(mvm);
2390 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2391 NL80211_TDLS_ENABLE_LINK);
2393 /* enable beacon filtering */
2394 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2396 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2397 new_state == IEEE80211_STA_ASSOC) {
2398 /* disable beacon filtering */
2399 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2401 } else if (old_state == IEEE80211_STA_ASSOC &&
2402 new_state == IEEE80211_STA_AUTH) {
2404 } else if (old_state == IEEE80211_STA_AUTH &&
2405 new_state == IEEE80211_STA_NONE) {
2407 } else if (old_state == IEEE80211_STA_NONE &&
2408 new_state == IEEE80211_STA_NOTEXIST) {
2409 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2411 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2412 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2413 NL80211_TDLS_DISABLE_LINK);
2419 mutex_unlock(&mvm->mutex);
2421 if (sta->tdls && ret == 0) {
2422 if (old_state == IEEE80211_STA_NOTEXIST &&
2423 new_state == IEEE80211_STA_NONE)
2424 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2425 else if (old_state == IEEE80211_STA_NONE &&
2426 new_state == IEEE80211_STA_NOTEXIST)
2427 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2433 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2435 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2437 mvm->rts_threshold = value;
2442 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2443 struct ieee80211_vif *vif,
2444 struct ieee80211_sta *sta, u32 changed)
2446 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2448 if (vif->type == NL80211_IFTYPE_STATION &&
2449 changed & IEEE80211_RC_NSS_CHANGED)
2450 iwl_mvm_sf_update(mvm, vif, false);
2453 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2454 struct ieee80211_vif *vif, u16 ac,
2455 const struct ieee80211_tx_queue_params *params)
2457 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2458 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2460 mvmvif->queue_params[ac] = *params;
2463 * No need to update right away, we'll get BSS_CHANGED_QOS
2464 * The exception is P2P_DEVICE interface which needs immediate update.
2466 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2469 mutex_lock(&mvm->mutex);
2470 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2471 mutex_unlock(&mvm->mutex);
2477 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2478 struct ieee80211_vif *vif)
2480 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2481 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2482 200 + vif->bss_conf.beacon_int);
2483 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2484 100 + vif->bss_conf.beacon_int);
2486 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2490 * iwl_mvm_protect_session() reads directly from the device
2491 * (the system time), so make sure it is available.
2493 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2496 mutex_lock(&mvm->mutex);
2497 /* Try really hard to protect the session and hear a beacon */
2498 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2499 mutex_unlock(&mvm->mutex);
2501 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2504 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2505 struct ieee80211_vif *vif,
2506 struct cfg80211_sched_scan_request *req,
2507 struct ieee80211_scan_ies *ies)
2509 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2513 mutex_lock(&mvm->mutex);
2515 if (!vif->bss_conf.idle) {
2520 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2523 mutex_unlock(&mvm->mutex);
2527 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2528 struct ieee80211_vif *vif)
2530 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2533 mutex_lock(&mvm->mutex);
2535 /* Due to a race condition, it's possible that mac80211 asks
2536 * us to stop a sched_scan when it's already stopped. This
2537 * can happen, for instance, if we stopped the scan ourselves,
2538 * called ieee80211_sched_scan_stopped() and the userspace called
2539 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2540 * could run. To handle this, simply return if the scan is
2543 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2544 mutex_unlock(&mvm->mutex);
2548 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2549 mutex_unlock(&mvm->mutex);
2550 iwl_mvm_wait_for_async_handlers(mvm);
2555 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2556 enum set_key_cmd cmd,
2557 struct ieee80211_vif *vif,
2558 struct ieee80211_sta *sta,
2559 struct ieee80211_key_conf *key)
2561 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2565 if (iwlwifi_mod_params.sw_crypto) {
2566 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2570 switch (key->cipher) {
2571 case WLAN_CIPHER_SUITE_TKIP:
2572 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2573 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2575 case WLAN_CIPHER_SUITE_CCMP:
2576 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2578 case WLAN_CIPHER_SUITE_AES_CMAC:
2579 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2581 case WLAN_CIPHER_SUITE_WEP40:
2582 case WLAN_CIPHER_SUITE_WEP104:
2583 /* For non-client mode, only use WEP keys for TX as we probably
2584 * don't have a station yet anyway and would then have to keep
2585 * track of the keys, linking them to each of the clients/peers
2586 * as they appear. For now, don't do that, for performance WEP
2587 * offload doesn't really matter much, but we need it for some
2588 * other offload features in client mode.
2590 if (vif->type != NL80211_IFTYPE_STATION)
2594 /* currently FW supports only one optional cipher scheme */
2595 if (hw->n_cipher_schemes &&
2596 hw->cipher_schemes->cipher == key->cipher)
2597 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2602 mutex_lock(&mvm->mutex);
2606 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2607 vif->type == NL80211_IFTYPE_AP) && !sta) {
2609 * GTK on AP interface is a TX-only key, return 0;
2610 * on IBSS they're per-station and because we're lazy
2611 * we don't support them for RX, so do the same.
2614 key->hw_key_idx = STA_KEY_IDX_INVALID;
2618 /* During FW restart, in order to restore the state as it was,
2619 * don't try to reprogram keys we previously failed for.
2621 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2622 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2623 IWL_DEBUG_MAC80211(mvm,
2624 "skip invalid idx key programming during restart\n");
2629 /* in HW restart reuse the index, otherwise request a new one */
2630 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2631 key_offset = key->hw_key_idx;
2633 key_offset = STA_KEY_IDX_INVALID;
2635 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2636 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2638 IWL_WARN(mvm, "set key failed\n");
2640 * can't add key for RX, but we don't need it
2641 * in the device for TX so still return 0
2643 key->hw_key_idx = STA_KEY_IDX_INVALID;
2649 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2654 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2655 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2661 mutex_unlock(&mvm->mutex);
2665 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2666 struct ieee80211_vif *vif,
2667 struct ieee80211_key_conf *keyconf,
2668 struct ieee80211_sta *sta,
2669 u32 iv32, u16 *phase1key)
2671 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2673 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2676 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2680 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2681 struct iwl_rx_packet *pkt, void *data)
2683 struct iwl_mvm *mvm =
2684 container_of(notif_wait, struct iwl_mvm, notif_wait);
2685 struct iwl_hs20_roc_res *resp;
2686 int resp_len = iwl_rx_packet_payload_len(pkt);
2687 struct iwl_mvm_time_event_data *te_data = data;
2689 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2692 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2693 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2697 resp = (void *)pkt->data;
2700 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2701 resp->status, resp->event_unique_id);
2703 te_data->uid = le32_to_cpu(resp->event_unique_id);
2704 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2707 spin_lock_bh(&mvm->time_event_lock);
2708 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2709 spin_unlock_bh(&mvm->time_event_lock);
2714 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2715 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2716 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2717 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2718 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2719 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2720 struct ieee80211_channel *channel,
2721 struct ieee80211_vif *vif,
2724 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2725 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2726 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2727 static const u16 time_event_response[] = { HOT_SPOT_CMD };
2728 struct iwl_notification_wait wait_time_event;
2729 u32 dtim_interval = vif->bss_conf.dtim_period *
2730 vif->bss_conf.beacon_int;
2732 struct iwl_hs20_roc_req aux_roc_req = {
2733 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2735 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2736 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2737 /* Set the channel info data */
2738 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2739 PHY_BAND_24 : PHY_BAND_5,
2740 .channel_info.channel = channel->hw_value,
2741 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2742 /* Set the time and duration */
2743 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2746 delay = AUX_ROC_MIN_DELAY;
2747 req_dur = MSEC_TO_TU(duration);
2750 * If we are associated we want the delay time to be at least one
2751 * dtim interval so that the FW can wait until after the DTIM and
2752 * then start the time event, this will potentially allow us to
2753 * remain off-channel for the max duration.
2754 * Since we want to use almost a whole dtim interval we would also
2755 * like the delay to be for 2-3 dtim intervals, in case there are
2756 * other time events with higher priority.
2758 if (vif->bss_conf.assoc) {
2759 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2760 /* We cannot remain off-channel longer than the DTIM interval */
2761 if (dtim_interval <= req_dur) {
2762 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2763 if (req_dur <= AUX_ROC_MIN_DURATION)
2764 req_dur = dtim_interval -
2765 AUX_ROC_MIN_SAFETY_BUFFER;
2769 aux_roc_req.duration = cpu_to_le32(req_dur);
2770 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2773 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2774 channel->hw_value, req_dur, duration, delay,
2776 /* Set the node address */
2777 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2779 lockdep_assert_held(&mvm->mutex);
2781 spin_lock_bh(&mvm->time_event_lock);
2783 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2784 spin_unlock_bh(&mvm->time_event_lock);
2789 te_data->duration = duration;
2790 te_data->id = HOT_SPOT_CMD;
2792 spin_unlock_bh(&mvm->time_event_lock);
2795 * Use a notification wait, which really just processes the
2796 * command response and doesn't wait for anything, in order
2797 * to be able to process the response and get the UID inside
2798 * the RX path. Using CMD_WANT_SKB doesn't work because it
2799 * stores the buffer and then wakes up this thread, by which
2800 * time another notification (that the time event started)
2801 * might already be processed unsuccessfully.
2803 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2804 time_event_response,
2805 ARRAY_SIZE(time_event_response),
2806 iwl_mvm_rx_aux_roc, te_data);
2808 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2812 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2813 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2817 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2818 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2819 /* should never fail */
2824 spin_lock_bh(&mvm->time_event_lock);
2825 iwl_mvm_te_clear_data(mvm, te_data);
2826 spin_unlock_bh(&mvm->time_event_lock);
2832 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2833 struct ieee80211_vif *vif,
2834 struct ieee80211_channel *channel,
2836 enum ieee80211_roc_type type)
2838 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2839 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2840 struct cfg80211_chan_def chandef;
2841 struct iwl_mvm_phy_ctxt *phy_ctxt;
2844 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2847 flush_work(&mvm->roc_done_wk);
2849 mutex_lock(&mvm->mutex);
2851 switch (vif->type) {
2852 case NL80211_IFTYPE_STATION:
2853 if (fw_has_capa(&mvm->fw->ucode_capa,
2854 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2855 /* Use aux roc framework (HS20) */
2856 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2860 IWL_ERR(mvm, "hotspot not supported\n");
2863 case NL80211_IFTYPE_P2P_DEVICE:
2867 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2872 for (i = 0; i < NUM_PHY_CTX; i++) {
2873 phy_ctxt = &mvm->phy_ctxts[i];
2874 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2877 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2879 * Unbind the P2P_DEVICE from the current PHY context,
2880 * and if the PHY context is not used remove it.
2882 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2883 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2886 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2888 /* Bind the P2P_DEVICE to the current PHY Context */
2889 mvmvif->phy_ctxt = phy_ctxt;
2891 ret = iwl_mvm_binding_add_vif(mvm, vif);
2892 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2895 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2896 goto schedule_time_event;
2900 /* Need to update the PHY context only if the ROC channel changed */
2901 if (channel == mvmvif->phy_ctxt->channel)
2902 goto schedule_time_event;
2904 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2907 * Change the PHY context configuration as it is currently referenced
2908 * only by the P2P Device MAC
2910 if (mvmvif->phy_ctxt->ref == 1) {
2911 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2917 * The PHY context is shared with other MACs. Need to remove the
2918 * P2P Device from the binding, allocate an new PHY context and
2919 * create a new binding
2921 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2927 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2930 IWL_ERR(mvm, "Failed to change PHY context\n");
2934 /* Unbind the P2P_DEVICE from the current PHY context */
2935 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2936 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2939 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2941 /* Bind the P2P_DEVICE to the new allocated PHY context */
2942 mvmvif->phy_ctxt = phy_ctxt;
2944 ret = iwl_mvm_binding_add_vif(mvm, vif);
2945 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2948 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2951 schedule_time_event:
2952 /* Schedule the time events */
2953 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2956 mutex_unlock(&mvm->mutex);
2957 IWL_DEBUG_MAC80211(mvm, "leave\n");
2961 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2963 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2965 IWL_DEBUG_MAC80211(mvm, "enter\n");
2967 mutex_lock(&mvm->mutex);
2968 iwl_mvm_stop_roc(mvm);
2969 mutex_unlock(&mvm->mutex);
2971 IWL_DEBUG_MAC80211(mvm, "leave\n");
2975 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2976 struct ieee80211_chanctx_conf *ctx)
2978 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2979 struct iwl_mvm_phy_ctxt *phy_ctxt;
2982 lockdep_assert_held(&mvm->mutex);
2984 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2986 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2992 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2993 ctx->rx_chains_static,
2994 ctx->rx_chains_dynamic);
2996 IWL_ERR(mvm, "Failed to add PHY context\n");
3000 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3001 *phy_ctxt_id = phy_ctxt->id;
3006 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3007 struct ieee80211_chanctx_conf *ctx)
3009 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3012 mutex_lock(&mvm->mutex);
3013 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3014 mutex_unlock(&mvm->mutex);
3019 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3020 struct ieee80211_chanctx_conf *ctx)
3022 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3023 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3025 lockdep_assert_held(&mvm->mutex);
3027 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3030 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3031 struct ieee80211_chanctx_conf *ctx)
3033 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3035 mutex_lock(&mvm->mutex);
3036 __iwl_mvm_remove_chanctx(mvm, ctx);
3037 mutex_unlock(&mvm->mutex);
3040 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3041 struct ieee80211_chanctx_conf *ctx,
3044 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3045 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3046 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3048 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3049 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3050 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3051 IEEE80211_CHANCTX_CHANGE_RADAR |
3052 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3053 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3054 phy_ctxt->ref, changed))
3057 mutex_lock(&mvm->mutex);
3058 iwl_mvm_bt_coex_vif_change(mvm);
3059 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3060 ctx->rx_chains_static,
3061 ctx->rx_chains_dynamic);
3062 mutex_unlock(&mvm->mutex);
3065 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3066 struct ieee80211_vif *vif,
3067 struct ieee80211_chanctx_conf *ctx,
3068 bool switching_chanctx)
3070 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3071 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3072 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3075 lockdep_assert_held(&mvm->mutex);
3077 mvmvif->phy_ctxt = phy_ctxt;
3079 switch (vif->type) {
3080 case NL80211_IFTYPE_AP:
3081 /* only needed if we're switching chanctx (i.e. during CSA) */
3082 if (switching_chanctx) {
3083 mvmvif->ap_ibss_active = true;
3086 case NL80211_IFTYPE_ADHOC:
3088 * The AP binding flow is handled as part of the start_ap flow
3089 * (in bss_info_changed), similarly for IBSS.
3093 case NL80211_IFTYPE_STATION:
3095 case NL80211_IFTYPE_MONITOR:
3096 /* always disable PS when a monitor interface is active */
3097 mvmvif->ps_disabled = true;
3104 ret = iwl_mvm_binding_add_vif(mvm, vif);
3109 * Power state must be updated before quotas,
3110 * otherwise fw will complain.
3112 iwl_mvm_power_update_mac(mvm);
3114 /* Setting the quota at this stage is only required for monitor
3115 * interfaces. For the other types, the bss_info changed flow
3116 * will handle quota settings.
3118 if (vif->type == NL80211_IFTYPE_MONITOR) {
3119 mvmvif->monitor_active = true;
3120 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3122 goto out_remove_binding;
3125 /* Handle binding during CSA */
3126 if (vif->type == NL80211_IFTYPE_AP) {
3127 iwl_mvm_update_quotas(mvm, false, NULL);
3128 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3131 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3132 u32 duration = 2 * vif->bss_conf.beacon_int;
3134 /* iwl_mvm_protect_session() reads directly from the
3135 * device (the system time), so make sure it is
3138 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3140 goto out_remove_binding;
3142 /* Protect the session to make sure we hear the first
3143 * beacon on the new channel.
3145 iwl_mvm_protect_session(mvm, vif, duration, duration,
3146 vif->bss_conf.beacon_int / 2,
3149 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3151 iwl_mvm_update_quotas(mvm, false, NULL);
3157 iwl_mvm_binding_remove_vif(mvm, vif);
3158 iwl_mvm_power_update_mac(mvm);
3161 mvmvif->phy_ctxt = NULL;
3164 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3165 struct ieee80211_vif *vif,
3166 struct ieee80211_chanctx_conf *ctx)
3168 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3171 mutex_lock(&mvm->mutex);
3172 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3173 mutex_unlock(&mvm->mutex);
3178 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3179 struct ieee80211_vif *vif,
3180 struct ieee80211_chanctx_conf *ctx,
3181 bool switching_chanctx)
3183 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3184 struct ieee80211_vif *disabled_vif = NULL;
3186 lockdep_assert_held(&mvm->mutex);
3188 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3190 switch (vif->type) {
3191 case NL80211_IFTYPE_ADHOC:
3193 case NL80211_IFTYPE_MONITOR:
3194 mvmvif->monitor_active = false;
3195 mvmvif->ps_disabled = false;
3197 case NL80211_IFTYPE_AP:
3198 /* This part is triggered only during CSA */
3199 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3202 mvmvif->csa_countdown = false;
3204 /* Set CS bit on all the stations */
3205 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3207 /* Save blocked iface, the timeout is set on the next beacon */
3208 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3210 mvmvif->ap_ibss_active = false;
3212 case NL80211_IFTYPE_STATION:
3213 if (!switching_chanctx)
3218 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3224 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3225 iwl_mvm_binding_remove_vif(mvm, vif);
3228 mvmvif->phy_ctxt = NULL;
3229 iwl_mvm_power_update_mac(mvm);
3232 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3233 struct ieee80211_vif *vif,
3234 struct ieee80211_chanctx_conf *ctx)
3236 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3238 mutex_lock(&mvm->mutex);
3239 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3240 mutex_unlock(&mvm->mutex);
3244 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3245 struct ieee80211_vif_chanctx_switch *vifs)
3249 mutex_lock(&mvm->mutex);
3250 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3251 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3253 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3255 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3259 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3263 "failed to assign new_ctx during channel switch\n");
3267 /* we don't support TDLS during DCM - can be caused by channel switch */
3268 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3269 iwl_mvm_teardown_tdls_peers(mvm);
3274 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3277 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3278 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3282 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3284 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3291 /* things keep failing, better restart the hw */
3292 iwl_mvm_nic_restart(mvm, false);
3295 mutex_unlock(&mvm->mutex);
3301 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3302 struct ieee80211_vif_chanctx_switch *vifs)
3306 mutex_lock(&mvm->mutex);
3307 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3309 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3313 "failed to assign new_ctx during channel switch\n");
3320 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3322 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3329 /* things keep failing, better restart the hw */
3330 iwl_mvm_nic_restart(mvm, false);
3333 mutex_unlock(&mvm->mutex);
3338 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3339 struct ieee80211_vif_chanctx_switch *vifs,
3341 enum ieee80211_chanctx_switch_mode mode)
3343 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3346 /* we only support a single-vif right now */
3351 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3352 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3354 case CHANCTX_SWMODE_REASSIGN_VIF:
3355 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3365 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3366 struct ieee80211_sta *sta,
3369 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3370 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3372 if (!mvm_sta || !mvm_sta->vif) {
3373 IWL_ERR(mvm, "Station is not associated to a vif\n");
3377 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3380 #ifdef CONFIG_NL80211_TESTMODE
3381 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3382 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3383 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3384 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3387 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3388 struct ieee80211_vif *vif,
3389 void *data, int len)
3391 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3395 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3399 if (!tb[IWL_MVM_TM_ATTR_CMD])
3402 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3403 case IWL_MVM_TM_CMD_SET_NOA:
3404 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3405 !vif->bss_conf.enable_beacon ||
3406 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3409 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3410 if (noa_duration >= vif->bss_conf.beacon_int)
3413 mvm->noa_duration = noa_duration;
3416 return iwl_mvm_update_quotas(mvm, false, NULL);
3417 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3418 /* must be associated client vif - ignore authorized */
3419 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3420 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3421 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3424 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3425 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3426 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3432 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3433 struct ieee80211_vif *vif,
3434 void *data, int len)
3436 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3439 mutex_lock(&mvm->mutex);
3440 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3441 mutex_unlock(&mvm->mutex);
3447 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3448 struct ieee80211_vif *vif,
3449 struct ieee80211_channel_switch *chsw)
3451 /* By implementing this operation, we prevent mac80211 from
3452 * starting its own channel switch timer, so that we can call
3453 * ieee80211_chswitch_done() ourselves at the right time
3454 * (which is when the absence time event starts).
3457 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3458 "dummy channel switch op\n");
3461 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3462 struct ieee80211_vif *vif,
3463 struct ieee80211_channel_switch *chsw)
3465 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3466 struct ieee80211_vif *csa_vif;
3467 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3471 mutex_lock(&mvm->mutex);
3473 mvmvif->csa_failed = false;
3475 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3476 chsw->chandef.center_freq1);
3478 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3480 switch (vif->type) {
3481 case NL80211_IFTYPE_AP:
3483 rcu_dereference_protected(mvm->csa_vif,
3484 lockdep_is_held(&mvm->mutex));
3485 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3486 "Another CSA is already in progress")) {
3491 rcu_assign_pointer(mvm->csa_vif, vif);
3493 if (WARN_ONCE(mvmvif->csa_countdown,
3494 "Previous CSA countdown didn't complete")) {
3500 case NL80211_IFTYPE_STATION:
3501 /* Schedule the time event to a bit before beacon 1,
3502 * to make sure we're in the new channel when the
3505 apply_time = chsw->device_timestamp +
3506 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3507 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3510 iwl_mvm_csa_client_absent(mvm, vif);
3512 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3514 if (mvmvif->bf_data.bf_enabled) {
3515 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3525 mvmvif->ps_disabled = true;
3527 ret = iwl_mvm_power_update_ps(mvm);
3531 /* we won't be on this channel any longer */
3532 iwl_mvm_teardown_tdls_peers(mvm);
3535 mutex_unlock(&mvm->mutex);
3540 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3541 struct ieee80211_vif *vif)
3543 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3544 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3547 mutex_lock(&mvm->mutex);
3549 if (mvmvif->csa_failed) {
3550 mvmvif->csa_failed = false;
3555 if (vif->type == NL80211_IFTYPE_STATION) {
3556 struct iwl_mvm_sta *mvmsta;
3558 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3561 if (WARN_ON(!mvmsta)) {
3566 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3568 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3570 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3574 iwl_mvm_stop_session_protection(mvm, vif);
3577 mvmvif->ps_disabled = false;
3579 ret = iwl_mvm_power_update_ps(mvm);
3582 mutex_unlock(&mvm->mutex);
3587 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3588 struct ieee80211_vif *vif, u32 queues, bool drop)
3590 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3591 struct iwl_mvm_vif *mvmvif;
3592 struct iwl_mvm_sta *mvmsta;
3593 struct ieee80211_sta *sta;
3597 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3600 mutex_lock(&mvm->mutex);
3601 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3603 /* flush the AP-station and all TDLS peers */
3604 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3605 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3606 lockdep_is_held(&mvm->mutex));
3607 if (IS_ERR_OR_NULL(sta))
3610 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3611 if (mvmsta->vif != vif)
3614 /* make sure only TDLS peers or the AP are flushed */
3615 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3617 msk |= mvmsta->tfd_queue_msk;
3621 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3622 IWL_ERR(mvm, "flush request fail\n");
3623 mutex_unlock(&mvm->mutex);
3625 mutex_unlock(&mvm->mutex);
3627 /* this can take a while, and we may need/want other operations
3628 * to succeed while doing this, so do it without the mutex held
3630 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3634 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3635 struct survey_info *survey)
3637 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3640 memset(survey, 0, sizeof(*survey));
3642 /* only support global statistics right now */
3646 if (fw_has_capa(&mvm->fw->ucode_capa,
3647 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3650 mutex_lock(&mvm->mutex);
3652 if (mvm->ucode_loaded) {
3653 ret = iwl_mvm_request_statistics(mvm, false);
3658 survey->filled = SURVEY_INFO_TIME |
3659 SURVEY_INFO_TIME_RX |
3660 SURVEY_INFO_TIME_TX |
3661 SURVEY_INFO_TIME_SCAN;
3662 survey->time = mvm->accu_radio_stats.on_time_rf +
3663 mvm->radio_stats.on_time_rf;
3664 do_div(survey->time, USEC_PER_MSEC);
3666 survey->time_rx = mvm->accu_radio_stats.rx_time +
3667 mvm->radio_stats.rx_time;
3668 do_div(survey->time_rx, USEC_PER_MSEC);
3670 survey->time_tx = mvm->accu_radio_stats.tx_time +
3671 mvm->radio_stats.tx_time;
3672 do_div(survey->time_tx, USEC_PER_MSEC);
3674 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3675 mvm->radio_stats.on_time_scan;
3676 do_div(survey->time_scan, USEC_PER_MSEC);
3680 mutex_unlock(&mvm->mutex);
3684 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3685 struct ieee80211_vif *vif,
3686 struct ieee80211_sta *sta,
3687 struct station_info *sinfo)
3689 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3690 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3691 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3693 if (fw_has_capa(&mvm->fw->ucode_capa,
3694 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3697 /* if beacon filtering isn't on mac80211 does it anyway */
3698 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3701 if (!vif->bss_conf.assoc)
3704 mutex_lock(&mvm->mutex);
3706 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3709 if (iwl_mvm_request_statistics(mvm, false))
3712 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3713 mvmvif->beacon_stats.accu_num_beacons;
3714 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3715 if (mvmvif->beacon_stats.avg_signal) {
3716 /* firmware only reports a value after RXing a few beacons */
3717 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3718 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3721 mutex_unlock(&mvm->mutex);
3724 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3725 struct ieee80211_vif *vif,
3726 const struct ieee80211_event *event)
3728 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
3730 if ((_cnt) && --(_cnt)) \
3732 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3735 struct iwl_fw_dbg_trigger_tlv *trig;
3736 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3738 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3741 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3742 trig_mlme = (void *)trig->data;
3743 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3746 if (event->u.mlme.data == ASSOC_EVENT) {
3747 if (event->u.mlme.status == MLME_DENIED)
3748 CHECK_MLME_TRIGGER(mvm, trig, buf,
3749 trig_mlme->stop_assoc_denied,
3750 "DENIED ASSOC: reason %d",
3751 event->u.mlme.reason);
3752 else if (event->u.mlme.status == MLME_TIMEOUT)
3753 CHECK_MLME_TRIGGER(mvm, trig, buf,
3754 trig_mlme->stop_assoc_timeout,
3756 } else if (event->u.mlme.data == AUTH_EVENT) {
3757 if (event->u.mlme.status == MLME_DENIED)
3758 CHECK_MLME_TRIGGER(mvm, trig, buf,
3759 trig_mlme->stop_auth_denied,
3760 "DENIED AUTH: reason %d",
3761 event->u.mlme.reason);
3762 else if (event->u.mlme.status == MLME_TIMEOUT)
3763 CHECK_MLME_TRIGGER(mvm, trig, buf,
3764 trig_mlme->stop_auth_timeout,
3766 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3767 CHECK_MLME_TRIGGER(mvm, trig, buf,
3768 trig_mlme->stop_rx_deauth,
3769 "DEAUTH RX %d", event->u.mlme.reason);
3770 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3771 CHECK_MLME_TRIGGER(mvm, trig, buf,
3772 trig_mlme->stop_tx_deauth,
3773 "DEAUTH TX %d", event->u.mlme.reason);
3775 #undef CHECK_MLME_TRIGGER
3778 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3779 struct ieee80211_vif *vif,
3780 const struct ieee80211_event *event)
3782 struct iwl_fw_dbg_trigger_tlv *trig;
3783 struct iwl_fw_dbg_trigger_ba *ba_trig;
3785 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3788 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3789 ba_trig = (void *)trig->data;
3790 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3793 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3796 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3797 "BAR received from %pM, tid %d, ssn %d",
3798 event->u.ba.sta->addr, event->u.ba.tid,
3803 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3804 struct ieee80211_vif *vif,
3805 const struct ieee80211_event *event)
3807 struct iwl_fw_dbg_trigger_tlv *trig;
3808 struct iwl_fw_dbg_trigger_ba *ba_trig;
3810 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3813 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3814 ba_trig = (void *)trig->data;
3815 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3818 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3821 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3822 "Frame from %pM timed out, tid %d",
3823 event->u.ba.sta->addr, event->u.ba.tid);
3826 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3827 struct ieee80211_vif *vif,
3828 const struct ieee80211_event *event)
3830 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3832 switch (event->type) {
3834 iwl_mvm_event_mlme_callback(mvm, vif, event);
3837 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3839 case BA_FRAME_TIMEOUT:
3840 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3847 const struct ieee80211_ops iwl_mvm_hw_ops = {
3848 .tx = iwl_mvm_mac_tx,
3849 .ampdu_action = iwl_mvm_mac_ampdu_action,
3850 .start = iwl_mvm_mac_start,
3851 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3852 .stop = iwl_mvm_mac_stop,
3853 .add_interface = iwl_mvm_mac_add_interface,
3854 .remove_interface = iwl_mvm_mac_remove_interface,
3855 .config = iwl_mvm_mac_config,
3856 .prepare_multicast = iwl_mvm_prepare_multicast,
3857 .configure_filter = iwl_mvm_configure_filter,
3858 .config_iface_filter = iwl_mvm_config_iface_filter,
3859 .bss_info_changed = iwl_mvm_bss_info_changed,
3860 .hw_scan = iwl_mvm_mac_hw_scan,
3861 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3862 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3863 .sta_state = iwl_mvm_mac_sta_state,
3864 .sta_notify = iwl_mvm_mac_sta_notify,
3865 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3866 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3867 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3868 .sta_rc_update = iwl_mvm_sta_rc_update,
3869 .conf_tx = iwl_mvm_mac_conf_tx,
3870 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3871 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3872 .flush = iwl_mvm_mac_flush,
3873 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3874 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3875 .set_key = iwl_mvm_mac_set_key,
3876 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3877 .remain_on_channel = iwl_mvm_roc,
3878 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3879 .add_chanctx = iwl_mvm_add_chanctx,
3880 .remove_chanctx = iwl_mvm_remove_chanctx,
3881 .change_chanctx = iwl_mvm_change_chanctx,
3882 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3883 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3884 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3886 .start_ap = iwl_mvm_start_ap_ibss,
3887 .stop_ap = iwl_mvm_stop_ap_ibss,
3888 .join_ibss = iwl_mvm_start_ap_ibss,
3889 .leave_ibss = iwl_mvm_stop_ap_ibss,
3891 .set_tim = iwl_mvm_set_tim,
3893 .channel_switch = iwl_mvm_channel_switch,
3894 .pre_channel_switch = iwl_mvm_pre_channel_switch,
3895 .post_channel_switch = iwl_mvm_post_channel_switch,
3897 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3898 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3899 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3901 .event_callback = iwl_mvm_mac_event_callback,
3903 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3905 #ifdef CONFIG_PM_SLEEP
3907 .suspend = iwl_mvm_suspend,
3908 .resume = iwl_mvm_resume,
3909 .set_wakeup = iwl_mvm_set_wakeup,
3910 .set_rekey_data = iwl_mvm_set_rekey_data,
3911 #if IS_ENABLED(CONFIG_IPV6)
3912 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3914 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3916 .get_survey = iwl_mvm_mac_get_survey,
3917 .sta_statistics = iwl_mvm_mac_sta_statistics,