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 <linuxwifi@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 if (mvm->trans->max_skb_frags)
443 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
445 hw->queues = mvm->first_agg_queue;
446 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
447 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
448 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
449 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
450 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
451 hw->rate_control_algorithm = "iwl-mvm-rs";
452 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
453 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
455 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2);
456 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
457 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
458 hw->wiphy->cipher_suites = mvm->ciphers;
461 * Enable 11w if advertised by firmware and software crypto
462 * is not enabled (as the firmware will interpret some mgmt
463 * packets, so enabling it with software crypto isn't safe)
465 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
466 !iwlwifi_mod_params.sw_crypto) {
467 ieee80211_hw_set(hw, MFP_CAPABLE);
468 mvm->ciphers[hw->wiphy->n_cipher_suites] =
469 WLAN_CIPHER_SUITE_AES_CMAC;
470 hw->wiphy->n_cipher_suites++;
473 /* currently FW API supports only one optional cipher scheme */
474 if (mvm->fw->cs[0].cipher) {
475 mvm->hw->n_cipher_schemes = 1;
476 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
477 mvm->ciphers[hw->wiphy->n_cipher_suites] =
478 mvm->fw->cs[0].cipher;
479 hw->wiphy->n_cipher_suites++;
482 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
483 hw->wiphy->features |=
484 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
485 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
486 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
488 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
489 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
490 hw->chanctx_data_size = sizeof(u16);
492 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
493 BIT(NL80211_IFTYPE_P2P_CLIENT) |
494 BIT(NL80211_IFTYPE_AP) |
495 BIT(NL80211_IFTYPE_P2P_GO) |
496 BIT(NL80211_IFTYPE_P2P_DEVICE) |
497 BIT(NL80211_IFTYPE_ADHOC);
499 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
500 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
501 if (iwl_mvm_is_lar_supported(mvm))
502 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
504 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
505 REGULATORY_DISABLE_BEACON_HINTS;
507 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
508 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
510 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
512 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
513 hw->wiphy->n_iface_combinations =
514 ARRAY_SIZE(iwl_mvm_iface_combinations);
516 hw->wiphy->max_remain_on_channel_duration = 10000;
517 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
518 /* we can compensate an offset of up to 3 channels = 15 MHz */
519 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
521 /* Extract MAC address */
522 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
523 hw->wiphy->addresses = mvm->addresses;
524 hw->wiphy->n_addresses = 1;
526 /* Extract additional MAC addresses if available */
527 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
528 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
530 for (i = 1; i < num_mac; i++) {
531 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
533 mvm->addresses[i].addr[5]++;
534 hw->wiphy->n_addresses++;
537 iwl_mvm_reset_phy_ctxts(mvm);
539 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
541 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
543 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
544 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
545 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
547 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
548 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
550 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
552 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
553 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
554 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
555 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
556 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
557 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
559 if (fw_has_capa(&mvm->fw->ucode_capa,
560 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
561 fw_has_api(&mvm->fw->ucode_capa,
562 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
563 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
564 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
567 hw->wiphy->hw_version = mvm->trans->hw_id;
569 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
570 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
572 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
574 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
575 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
576 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
577 /* we create the 802.11 header and zero length SSID IE. */
578 hw->wiphy->max_sched_scan_ie_len =
579 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
580 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
581 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
584 * the firmware uses u8 for num of iterations, but 0xff is saved for
585 * infinite loop, so the maximum number of iterations is actually 254.
587 hw->wiphy->max_sched_scan_plan_iterations = 254;
589 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
590 NL80211_FEATURE_LOW_PRIORITY_SCAN |
591 NL80211_FEATURE_P2P_GO_OPPPS |
592 NL80211_FEATURE_DYNAMIC_SMPS |
593 NL80211_FEATURE_STATIC_SMPS |
594 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
596 if (fw_has_capa(&mvm->fw->ucode_capa,
597 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
598 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
599 if (fw_has_capa(&mvm->fw->ucode_capa,
600 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
601 hw->wiphy->features |= NL80211_FEATURE_QUIET;
603 if (fw_has_capa(&mvm->fw->ucode_capa,
604 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
605 hw->wiphy->features |=
606 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
608 if (fw_has_capa(&mvm->fw->ucode_capa,
609 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
610 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
612 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
614 #ifdef CONFIG_PM_SLEEP
615 if (iwl_mvm_is_d0i3_supported(mvm) &&
616 device_can_wakeup(mvm->trans->dev)) {
617 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
618 hw->wiphy->wowlan = &mvm->wowlan;
621 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
622 mvm->trans->ops->d3_suspend &&
623 mvm->trans->ops->d3_resume &&
624 device_can_wakeup(mvm->trans->dev)) {
625 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
626 WIPHY_WOWLAN_DISCONNECT |
627 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
628 WIPHY_WOWLAN_RFKILL_RELEASE |
629 WIPHY_WOWLAN_NET_DETECT;
630 if (!iwlwifi_mod_params.sw_crypto)
631 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
632 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
633 WIPHY_WOWLAN_4WAY_HANDSHAKE;
635 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
636 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
637 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
638 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
639 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
640 hw->wiphy->wowlan = &mvm->wowlan;
644 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
645 /* assign default bcast filtering configuration */
646 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
649 ret = iwl_mvm_leds_init(mvm);
653 if (fw_has_capa(&mvm->fw->ucode_capa,
654 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
655 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
656 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
657 ieee80211_hw_set(hw, TDLS_WIDER_BW);
660 if (fw_has_capa(&mvm->fw->ucode_capa,
661 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
662 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
663 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
666 hw->netdev_features |= mvm->cfg->features;
667 if (!iwl_mvm_is_csum_supported(mvm))
668 hw->netdev_features &= ~NETIF_F_RXCSUM;
670 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
671 hw->netdev_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
672 NETIF_F_TSO | NETIF_F_TSO6;
674 ret = ieee80211_register_hw(mvm->hw);
676 iwl_mvm_leds_exit(mvm);
681 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
682 struct ieee80211_sta *sta,
685 struct iwl_mvm_sta *mvmsta;
689 * double check the IN_D0I3 flag both before and after
690 * taking the spinlock, in order to prevent taking
691 * the spinlock when not needed.
693 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
696 spin_lock(&mvm->d0i3_tx_lock);
698 * testing the flag again ensures the skb dequeue
699 * loop (on d0i3 exit) hasn't run yet.
701 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
704 mvmsta = iwl_mvm_sta_from_mac80211(sta);
705 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
706 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
709 __skb_queue_tail(&mvm->d0i3_tx, skb);
710 ieee80211_stop_queues(mvm->hw);
713 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
714 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
718 spin_unlock(&mvm->d0i3_tx_lock);
722 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
723 struct ieee80211_tx_control *control,
726 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
727 struct ieee80211_sta *sta = control->sta;
728 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
729 struct ieee80211_hdr *hdr = (void *)skb->data;
731 if (iwl_mvm_is_radio_killed(mvm)) {
732 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
736 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
737 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
738 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
741 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
742 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
743 ieee80211_is_mgmt(hdr->frame_control) &&
744 !ieee80211_is_deauth(hdr->frame_control) &&
745 !ieee80211_is_disassoc(hdr->frame_control) &&
746 !ieee80211_is_action(hdr->frame_control)))
750 if (iwl_mvm_defer_tx(mvm, sta, skb))
752 if (iwl_mvm_tx_skb(mvm, skb, sta))
757 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
761 ieee80211_free_txskb(hw, skb);
764 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
766 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
771 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
773 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
775 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
778 /* enabled by default */
782 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
784 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
786 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
790 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
791 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
792 enum ieee80211_ampdu_mlme_action action)
794 struct iwl_fw_dbg_trigger_tlv *trig;
795 struct iwl_fw_dbg_trigger_ba *ba_trig;
797 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
800 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
801 ba_trig = (void *)trig->data;
803 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
807 case IEEE80211_AMPDU_TX_OPERATIONAL: {
808 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
809 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
811 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
812 "TX AGG START: MAC %pM tid %d ssn %d\n",
813 sta->addr, tid, tid_data->ssn);
816 case IEEE80211_AMPDU_TX_STOP_CONT:
817 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
818 "TX AGG STOP: MAC %pM tid %d\n",
821 case IEEE80211_AMPDU_RX_START:
822 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
823 "RX AGG START: MAC %pM tid %d ssn %d\n",
824 sta->addr, tid, rx_ba_ssn);
826 case IEEE80211_AMPDU_RX_STOP:
827 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
828 "RX AGG STOP: MAC %pM tid %d\n",
836 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
837 struct ieee80211_vif *vif,
838 enum ieee80211_ampdu_mlme_action action,
839 struct ieee80211_sta *sta, u16 tid,
840 u16 *ssn, u8 buf_size, bool amsdu)
842 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
844 bool tx_agg_ref = false;
846 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
847 sta->addr, tid, action);
849 if (!(mvm->nvm_data->sku_cap_11n_enable))
852 /* return from D0i3 before starting a new Tx aggregation */
854 case IEEE80211_AMPDU_TX_START:
855 case IEEE80211_AMPDU_TX_STOP_CONT:
856 case IEEE80211_AMPDU_TX_STOP_FLUSH:
857 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
858 case IEEE80211_AMPDU_TX_OPERATIONAL:
860 * for tx start, wait synchronously until D0i3 exit to
861 * get the correct sequence number for the tid.
862 * additionally, some other ampdu actions use direct
863 * target access, which is not handled automatically
864 * by the trans layer (unlike commands), so wait for
865 * d0i3 exit in these cases as well.
867 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
877 mutex_lock(&mvm->mutex);
880 case IEEE80211_AMPDU_RX_START:
881 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
885 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
887 case IEEE80211_AMPDU_RX_STOP:
888 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
890 case IEEE80211_AMPDU_TX_START:
891 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
895 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
897 case IEEE80211_AMPDU_TX_STOP_CONT:
898 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
900 case IEEE80211_AMPDU_TX_STOP_FLUSH:
901 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
902 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
904 case IEEE80211_AMPDU_TX_OPERATIONAL:
905 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
916 if (action == IEEE80211_AMPDU_RX_START)
919 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
922 mutex_unlock(&mvm->mutex);
925 * If the tid is marked as started, we won't use it for offloaded
926 * traffic on the next D0i3 entry. It's safe to unref.
929 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
934 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
935 struct ieee80211_vif *vif)
937 struct iwl_mvm *mvm = data;
938 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
940 mvmvif->uploaded = false;
941 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
943 spin_lock_bh(&mvm->time_event_lock);
944 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
945 spin_unlock_bh(&mvm->time_event_lock);
947 mvmvif->phy_ctxt = NULL;
948 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
951 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
953 /* clear the D3 reconfig, we only need it to avoid dumping a
954 * firmware coredump on reconfiguration, we shouldn't do that
955 * on D3->D0 transition
957 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
958 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
959 iwl_mvm_fw_error_dump(mvm);
962 /* cleanup all stale references (scan, roc), but keep the
963 * ucode_down ref until reconfig is complete
965 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
967 iwl_trans_stop_device(mvm->trans);
969 mvm->scan_status = 0;
970 mvm->ps_disabled = false;
971 mvm->calibrating = false;
973 /* just in case one was running */
974 iwl_mvm_cleanup_roc_te(mvm);
975 ieee80211_remain_on_channel_expired(mvm->hw);
978 * cleanup all interfaces, even inactive ones, as some might have
979 * gone down during the HW restart
981 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
983 mvm->p2p_device_vif = NULL;
984 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
986 iwl_mvm_reset_phy_ctxts(mvm);
987 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
988 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
989 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
990 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
991 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
992 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
993 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
994 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
995 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
997 ieee80211_wake_queues(mvm->hw);
999 /* clear any stale d0i3 state */
1000 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1003 mvm->rx_ba_sessions = 0;
1004 mvm->fw_dbg_conf = FW_DBG_INVALID;
1005 mvm->scan_type = IWL_SCAN_TYPE_NOT_SET;
1007 /* keep statistics ticking */
1008 iwl_mvm_accu_radio_stats(mvm);
1011 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1015 lockdep_assert_held(&mvm->mutex);
1017 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1018 /* Clean up some internal and mac80211 state on restart */
1019 iwl_mvm_restart_cleanup(mvm);
1021 /* Hold the reference to prevent runtime suspend while
1022 * the start procedure runs. It's a bit confusing
1023 * that the UCODE_DOWN reference is taken, but it just
1024 * means "UCODE is not UP yet". ( TODO: rename this
1027 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1029 ret = iwl_mvm_up(mvm);
1031 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1032 /* Something went wrong - we need to finish some cleanup
1033 * that normally iwl_mvm_mac_restart_complete() below
1036 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1037 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1043 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1045 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1048 /* Some hw restart cleanups must not hold the mutex */
1049 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1051 * Make sure we are out of d0i3. This is needed
1052 * to make sure the reference accounting is correct
1053 * (and there is no stale d0i3_exit_work).
1055 wait_event_timeout(mvm->d0i3_exit_waitq,
1056 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1061 mutex_lock(&mvm->mutex);
1062 ret = __iwl_mvm_mac_start(mvm);
1063 mutex_unlock(&mvm->mutex);
1068 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1072 mutex_lock(&mvm->mutex);
1074 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1075 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1076 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1078 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1081 /* allow transport/FW low power modes */
1082 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1085 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1086 * of packets the FW sent out, so we must reconnect.
1088 iwl_mvm_teardown_tdls_peers(mvm);
1090 mutex_unlock(&mvm->mutex);
1093 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1095 if (iwl_mvm_is_d0i3_supported(mvm) &&
1096 iwl_mvm_enter_d0i3_on_suspend(mvm))
1097 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1098 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1101 "D0i3 exit on resume timed out\n");
1105 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1106 enum ieee80211_reconfig_type reconfig_type)
1108 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1110 switch (reconfig_type) {
1111 case IEEE80211_RECONFIG_TYPE_RESTART:
1112 iwl_mvm_restart_complete(mvm);
1114 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1115 iwl_mvm_resume_complete(mvm);
1120 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1122 lockdep_assert_held(&mvm->mutex);
1124 /* firmware counters are obviously reset now, but we shouldn't
1125 * partially track so also clear the fw_reset_accu counters.
1127 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1129 /* async_handlers_wk is now blocked */
1132 * The work item could be running or queued if the
1133 * ROC time event stops just as we get here.
1135 flush_work(&mvm->roc_done_wk);
1137 iwl_trans_stop_device(mvm->trans);
1139 iwl_mvm_async_handlers_purge(mvm);
1140 /* async_handlers_list is empty and will stay empty: HW is stopped */
1142 /* the fw is stopped, the aux sta is dead: clean up driver state */
1143 iwl_mvm_del_aux_sta(mvm);
1146 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1147 * won't be called in this case).
1148 * But make sure to cleanup interfaces that have gone down before/during
1149 * HW restart was requested.
1151 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1152 ieee80211_iterate_interfaces(mvm->hw, 0,
1153 iwl_mvm_cleanup_iterator, mvm);
1155 /* We shouldn't have any UIDs still set. Loop over all the UIDs to
1156 * make sure there's nothing left there and warn if any is found.
1158 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1161 for (i = 0; i < mvm->max_scans; i++) {
1162 if (WARN_ONCE(mvm->scan_uid_status[i],
1163 "UMAC scan UID %d status was not cleaned\n",
1165 mvm->scan_uid_status[i] = 0;
1169 mvm->ucode_loaded = false;
1172 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1174 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1176 flush_work(&mvm->d0i3_exit_work);
1177 flush_work(&mvm->async_handlers_wk);
1178 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1179 iwl_mvm_free_fw_dump_desc(mvm);
1181 mutex_lock(&mvm->mutex);
1182 __iwl_mvm_mac_stop(mvm);
1183 mutex_unlock(&mvm->mutex);
1186 * The worker might have been waiting for the mutex, let it run and
1187 * discover that its list is now empty.
1189 cancel_work_sync(&mvm->async_handlers_wk);
1192 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1196 lockdep_assert_held(&mvm->mutex);
1198 for (i = 0; i < NUM_PHY_CTX; i++)
1199 if (!mvm->phy_ctxts[i].ref)
1200 return &mvm->phy_ctxts[i];
1202 IWL_ERR(mvm, "No available PHY context\n");
1206 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1209 struct iwl_dev_tx_power_cmd cmd = {
1210 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1211 .v2.mac_context_id =
1212 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1213 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1215 int len = sizeof(cmd);
1217 if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1218 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1220 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1221 len = sizeof(cmd.v2);
1223 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1226 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1227 struct ieee80211_vif *vif)
1229 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1230 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1236 * make sure D0i3 exit is completed, otherwise a target access
1237 * during tx queue configuration could be done when still in
1240 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1245 * Not much to do here. The stack will not allow interface
1246 * types or combinations that we didn't advertise, so we
1247 * don't really have to check the types.
1250 mutex_lock(&mvm->mutex);
1252 /* make sure that beacon statistics don't go backwards with FW reset */
1253 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1254 mvmvif->beacon_stats.accu_num_beacons +=
1255 mvmvif->beacon_stats.num_beacons;
1257 /* Allocate resources for the MAC context, and add it to the fw */
1258 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1262 /* Counting number of interfaces is needed for legacy PM */
1263 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1267 * The AP binding flow can be done only after the beacon
1268 * template is configured (which happens only in the mac80211
1269 * start_ap() flow), and adding the broadcast station can happen
1270 * only after the binding.
1271 * In addition, since modifying the MAC before adding a bcast
1272 * station is not allowed by the FW, delay the adding of MAC context to
1273 * the point where we can also add the bcast station.
1274 * In short: there's not much we can do at this point, other than
1275 * allocating resources :)
1277 if (vif->type == NL80211_IFTYPE_AP ||
1278 vif->type == NL80211_IFTYPE_ADHOC) {
1279 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1281 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1285 iwl_mvm_vif_dbgfs_register(mvm, vif);
1289 mvmvif->features |= hw->netdev_features;
1291 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1295 ret = iwl_mvm_power_update_mac(mvm);
1297 goto out_remove_mac;
1299 /* beacon filtering */
1300 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1302 goto out_remove_mac;
1304 if (!mvm->bf_allowed_vif &&
1305 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1306 mvm->bf_allowed_vif = mvmvif;
1307 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1308 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1312 * P2P_DEVICE interface does not have a channel context assigned to it,
1313 * so a dedicated PHY context is allocated to it and the corresponding
1314 * MAC context is bound to it at this stage.
1316 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1318 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1319 if (!mvmvif->phy_ctxt) {
1324 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1325 ret = iwl_mvm_binding_add_vif(mvm, vif);
1329 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1333 /* Save a pointer to p2p device vif, so it can later be used to
1334 * update the p2p device MAC when a GO is started/stopped */
1335 mvm->p2p_device_vif = vif;
1338 iwl_mvm_vif_dbgfs_register(mvm, vif);
1342 iwl_mvm_binding_remove_vif(mvm, vif);
1344 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1346 if (mvm->bf_allowed_vif == mvmvif) {
1347 mvm->bf_allowed_vif = NULL;
1348 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1349 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1352 mvmvif->phy_ctxt = NULL;
1353 iwl_mvm_mac_ctxt_remove(mvm, vif);
1355 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1358 iwl_mvm_mac_ctxt_release(mvm, vif);
1360 mutex_unlock(&mvm->mutex);
1362 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1367 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1368 struct ieee80211_vif *vif)
1370 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1374 * mac80211 first removes all the stations of the vif and
1375 * then removes the vif. When it removes a station it also
1376 * flushes the AMPDU session. So by now, all the AMPDU sessions
1377 * of all the stations of this vif are closed, and the queues
1378 * of these AMPDU sessions are properly closed.
1379 * We still need to take care of the shared queues of the vif.
1382 mutex_lock(&mvm->mutex);
1383 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1384 mutex_unlock(&mvm->mutex);
1387 * There are transports that buffer a few frames in the host.
1388 * For these, the flush above isn't enough since while we were
1389 * flushing, the transport might have sent more frames to the
1390 * device. To solve this, wait here until the transport is
1391 * empty. Technically, this could have replaced the flush
1392 * above, but flush is much faster than draining. So flush
1393 * first, and drain to make sure we have no frames in the
1394 * transport anymore.
1395 * If a station still had frames on the shared queues, it is
1396 * already marked as draining, so to complete the draining, we
1397 * just need to wait until the transport is empty.
1399 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1402 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1404 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1405 * We assume here that all the packets sent to the OFFCHANNEL
1406 * queue are sent in ROC session.
1408 flush_work(&mvm->roc_done_wk);
1411 * By now, all the AC queues are empty. The AGG queues are
1412 * empty too. We already got all the Tx responses for all the
1413 * packets in the queues. The drain work can have been
1414 * triggered. Flush it.
1416 flush_work(&mvm->sta_drained_wk);
1420 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1421 struct ieee80211_vif *vif)
1423 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1424 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1426 iwl_mvm_prepare_mac_removal(mvm, vif);
1428 mutex_lock(&mvm->mutex);
1430 if (mvm->bf_allowed_vif == mvmvif) {
1431 mvm->bf_allowed_vif = NULL;
1432 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1433 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1436 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1439 * For AP/GO interface, the tear down of the resources allocated to the
1440 * interface is be handled as part of the stop_ap flow.
1442 if (vif->type == NL80211_IFTYPE_AP ||
1443 vif->type == NL80211_IFTYPE_ADHOC) {
1444 #ifdef CONFIG_NL80211_TESTMODE
1445 if (vif == mvm->noa_vif) {
1446 mvm->noa_vif = NULL;
1447 mvm->noa_duration = 0;
1450 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1454 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1455 mvm->p2p_device_vif = NULL;
1456 iwl_mvm_rm_bcast_sta(mvm, vif);
1457 iwl_mvm_binding_remove_vif(mvm, vif);
1458 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1459 mvmvif->phy_ctxt = NULL;
1462 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1465 iwl_mvm_power_update_mac(mvm);
1466 iwl_mvm_mac_ctxt_remove(mvm, vif);
1469 iwl_mvm_mac_ctxt_release(mvm, vif);
1470 mutex_unlock(&mvm->mutex);
1473 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1478 struct iwl_mvm_mc_iter_data {
1479 struct iwl_mvm *mvm;
1483 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1484 struct ieee80211_vif *vif)
1486 struct iwl_mvm_mc_iter_data *data = _data;
1487 struct iwl_mvm *mvm = data->mvm;
1488 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1491 /* if we don't have free ports, mcast frames will be dropped */
1492 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1495 if (vif->type != NL80211_IFTYPE_STATION ||
1496 !vif->bss_conf.assoc)
1499 cmd->port_id = data->port_id++;
1500 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1501 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1503 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1505 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1508 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1510 struct iwl_mvm_mc_iter_data iter_data = {
1514 lockdep_assert_held(&mvm->mutex);
1516 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1519 ieee80211_iterate_active_interfaces_atomic(
1520 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1521 iwl_mvm_mc_iface_iterator, &iter_data);
1524 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1525 struct netdev_hw_addr_list *mc_list)
1527 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1528 struct iwl_mcast_filter_cmd *cmd;
1529 struct netdev_hw_addr *addr;
1534 addr_count = netdev_hw_addr_list_count(mc_list);
1535 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1536 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1540 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1541 cmd = kzalloc(len, GFP_ATOMIC);
1547 return (u64)(unsigned long)cmd;
1550 netdev_hw_addr_list_for_each(addr, mc_list) {
1551 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1552 cmd->count, addr->addr);
1553 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1554 addr->addr, ETH_ALEN);
1558 return (u64)(unsigned long)cmd;
1561 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1562 unsigned int changed_flags,
1563 unsigned int *total_flags,
1566 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1567 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1569 mutex_lock(&mvm->mutex);
1571 /* replace previous configuration */
1572 kfree(mvm->mcast_filter_cmd);
1573 mvm->mcast_filter_cmd = cmd;
1578 iwl_mvm_recalc_multicast(mvm);
1580 mutex_unlock(&mvm->mutex);
1584 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1585 struct ieee80211_vif *vif,
1586 unsigned int filter_flags,
1587 unsigned int changed_flags)
1589 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1591 /* We support only filter for probe requests */
1592 if (!(changed_flags & FIF_PROBE_REQ))
1595 /* Supported only for p2p client interfaces */
1596 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1600 mutex_lock(&mvm->mutex);
1601 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1602 mutex_unlock(&mvm->mutex);
1605 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1606 struct iwl_bcast_iter_data {
1607 struct iwl_mvm *mvm;
1608 struct iwl_bcast_filter_cmd *cmd;
1613 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1614 const struct iwl_fw_bcast_filter *in_filter,
1615 struct iwl_fw_bcast_filter *out_filter)
1617 struct iwl_fw_bcast_filter_attr *attr;
1620 memcpy(out_filter, in_filter, sizeof(*out_filter));
1622 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1623 attr = &out_filter->attrs[i];
1628 switch (attr->reserved1) {
1629 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1630 if (vif->bss_conf.arp_addr_cnt != 1) {
1635 attr->val = vif->bss_conf.arp_addr_list[0];
1637 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1638 attr->val = *(__be32 *)&vif->addr[2];
1643 attr->reserved1 = 0;
1644 out_filter->num_attrs++;
1648 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1649 struct ieee80211_vif *vif)
1651 struct iwl_bcast_iter_data *data = _data;
1652 struct iwl_mvm *mvm = data->mvm;
1653 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1654 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1655 struct iwl_fw_bcast_mac *bcast_mac;
1658 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1661 bcast_mac = &cmd->macs[mvmvif->id];
1664 * enable filtering only for associated stations, but not for P2P
1667 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1668 !vif->bss_conf.assoc)
1671 bcast_mac->default_discard = 1;
1673 /* copy all configured filters */
1674 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1676 * Make sure we don't exceed our filters limit.
1677 * if there is still a valid filter to be configured,
1678 * be on the safe side and just allow bcast for this mac.
1680 if (WARN_ON_ONCE(data->current_filter >=
1681 ARRAY_SIZE(cmd->filters))) {
1682 bcast_mac->default_discard = 0;
1683 bcast_mac->attached_filters = 0;
1687 iwl_mvm_set_bcast_filter(vif,
1688 &mvm->bcast_filters[i],
1689 &cmd->filters[data->current_filter]);
1691 /* skip current filter if it contains no attributes */
1692 if (!cmd->filters[data->current_filter].num_attrs)
1695 /* attach the filter to current mac */
1696 bcast_mac->attached_filters |=
1697 cpu_to_le16(BIT(data->current_filter));
1699 data->current_filter++;
1703 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1704 struct iwl_bcast_filter_cmd *cmd)
1706 struct iwl_bcast_iter_data iter_data = {
1711 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1714 memset(cmd, 0, sizeof(*cmd));
1715 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1716 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1718 #ifdef CONFIG_IWLWIFI_DEBUGFS
1719 /* use debugfs filters/macs if override is configured */
1720 if (mvm->dbgfs_bcast_filtering.override) {
1721 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1722 sizeof(cmd->filters));
1723 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1729 /* if no filters are configured, do nothing */
1730 if (!mvm->bcast_filters)
1733 /* configure and attach these filters for each associated sta vif */
1734 ieee80211_iterate_active_interfaces(
1735 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1736 iwl_mvm_bcast_filter_iterator, &iter_data);
1741 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1743 struct iwl_bcast_filter_cmd cmd;
1745 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1748 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1751 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1755 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1761 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1762 struct ieee80211_vif *vif,
1763 struct ieee80211_bss_conf *bss_conf,
1766 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1770 * Re-calculate the tsf id, as the master-slave relations depend on the
1771 * beacon interval, which was not known when the station interface was
1774 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1775 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1778 * If we're not associated yet, take the (new) BSSID before associating
1779 * so the firmware knows. If we're already associated, then use the old
1780 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1781 * branch for disassociation below.
1783 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1784 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1786 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1788 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1790 /* after sending it once, adopt mac80211 data */
1791 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1792 mvmvif->associated = bss_conf->assoc;
1794 if (changes & BSS_CHANGED_ASSOC) {
1795 if (bss_conf->assoc) {
1796 /* clear statistics to get clean beacon counter */
1797 iwl_mvm_request_statistics(mvm, true);
1798 memset(&mvmvif->beacon_stats, 0,
1799 sizeof(mvmvif->beacon_stats));
1801 /* add quota for this interface */
1802 ret = iwl_mvm_update_quotas(mvm, true, NULL);
1804 IWL_ERR(mvm, "failed to update quotas\n");
1808 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1811 * If we're restarting then the firmware will
1812 * obviously have lost synchronisation with
1813 * the AP. It will attempt to synchronise by
1814 * itself, but we can make it more reliable by
1815 * scheduling a session protection time event.
1817 * The firmware needs to receive a beacon to
1818 * catch up with synchronisation, use 110% of
1819 * the beacon interval.
1821 * Set a large maximum delay to allow for more
1822 * than a single interface.
1824 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1825 iwl_mvm_protect_session(mvm, vif, dur, dur,
1829 iwl_mvm_sf_update(mvm, vif, false);
1830 iwl_mvm_power_vif_assoc(mvm, vif);
1832 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1833 iwl_mvm_update_smps(mvm, vif,
1834 IWL_MVM_SMPS_REQ_PROT,
1835 IEEE80211_SMPS_DYNAMIC);
1837 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1839 * If update fails - SF might be running in associated
1840 * mode while disassociated - which is forbidden.
1842 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1843 "Failed to update SF upon disassociation\n");
1845 /* remove AP station now that the MAC is unassoc */
1846 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1848 IWL_ERR(mvm, "failed to remove AP station\n");
1850 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1851 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1852 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1853 /* remove quota for this interface */
1854 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1856 IWL_ERR(mvm, "failed to update quotas\n");
1859 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1861 /* this will take the cleared BSSID from bss_conf */
1862 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1865 "failed to update MAC %pM (clear after unassoc)\n",
1869 iwl_mvm_recalc_multicast(mvm);
1870 iwl_mvm_configure_bcast_filter(mvm);
1872 /* reset rssi values */
1873 mvmvif->bf_data.ave_beacon_signal = 0;
1875 iwl_mvm_bt_coex_vif_change(mvm);
1876 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1877 IEEE80211_SMPS_AUTOMATIC);
1878 if (fw_has_capa(&mvm->fw->ucode_capa,
1879 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1880 iwl_mvm_config_scan(mvm);
1881 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1883 * We received a beacon _after_ association so
1884 * remove the session protection.
1886 iwl_mvm_remove_time_event(mvm, mvmvif,
1887 &mvmvif->time_event_data);
1890 if (changes & BSS_CHANGED_BEACON_INFO) {
1891 iwl_mvm_sf_update(mvm, vif, false);
1892 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1895 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1896 ret = iwl_mvm_power_update_mac(mvm);
1898 IWL_ERR(mvm, "failed to update power mode\n");
1901 if (changes & BSS_CHANGED_TXPOWER) {
1902 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1904 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1907 if (changes & BSS_CHANGED_CQM) {
1908 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1909 /* reset cqm events tracking */
1910 mvmvif->bf_data.last_cqm_event = 0;
1911 if (mvmvif->bf_data.bf_enabled) {
1912 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1915 "failed to update CQM thresholds\n");
1919 if (changes & BSS_CHANGED_ARP_FILTER) {
1920 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1921 iwl_mvm_configure_bcast_filter(mvm);
1925 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1926 struct ieee80211_vif *vif)
1928 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1929 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1933 * iwl_mvm_mac_ctxt_add() might read directly from the device
1934 * (the system time), so make sure it is available.
1936 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1940 mutex_lock(&mvm->mutex);
1942 /* Send the beacon template */
1943 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1948 * Re-calculate the tsf id, as the master-slave relations depend on the
1949 * beacon interval, which was not known when the AP interface was added.
1951 if (vif->type == NL80211_IFTYPE_AP)
1952 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1954 mvmvif->ap_assoc_sta_count = 0;
1956 /* Add the mac context */
1957 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1961 /* Perform the binding */
1962 ret = iwl_mvm_binding_add_vif(mvm, vif);
1966 /* Send the bcast station. At this stage the TBTT and DTIM time events
1967 * are added and applied to the scheduler */
1968 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1972 /* must be set before quota calculations */
1973 mvmvif->ap_ibss_active = true;
1975 /* power updated needs to be done before quotas */
1976 iwl_mvm_power_update_mac(mvm);
1978 ret = iwl_mvm_update_quotas(mvm, false, NULL);
1980 goto out_quota_failed;
1982 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1983 if (vif->p2p && mvm->p2p_device_vif)
1984 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1986 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1988 iwl_mvm_bt_coex_vif_change(mvm);
1990 /* we don't support TDLS during DCM */
1991 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1992 iwl_mvm_teardown_tdls_peers(mvm);
1997 iwl_mvm_power_update_mac(mvm);
1998 mvmvif->ap_ibss_active = false;
1999 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2001 iwl_mvm_binding_remove_vif(mvm, vif);
2003 iwl_mvm_mac_ctxt_remove(mvm, vif);
2005 mutex_unlock(&mvm->mutex);
2006 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2010 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2011 struct ieee80211_vif *vif)
2013 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2014 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2016 iwl_mvm_prepare_mac_removal(mvm, vif);
2018 mutex_lock(&mvm->mutex);
2020 /* Handle AP stop while in CSA */
2021 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2022 iwl_mvm_remove_time_event(mvm, mvmvif,
2023 &mvmvif->time_event_data);
2024 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2025 mvmvif->csa_countdown = false;
2028 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2029 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2030 mvm->csa_tx_block_bcn_timeout = 0;
2033 mvmvif->ap_ibss_active = false;
2034 mvm->ap_last_beacon_gp2 = 0;
2036 iwl_mvm_bt_coex_vif_change(mvm);
2038 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2040 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2041 if (vif->p2p && mvm->p2p_device_vif)
2042 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2044 iwl_mvm_update_quotas(mvm, false, NULL);
2045 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2046 iwl_mvm_binding_remove_vif(mvm, vif);
2048 iwl_mvm_power_update_mac(mvm);
2050 iwl_mvm_mac_ctxt_remove(mvm, vif);
2052 mutex_unlock(&mvm->mutex);
2056 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2057 struct ieee80211_vif *vif,
2058 struct ieee80211_bss_conf *bss_conf,
2061 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2063 /* Changes will be applied when the AP/IBSS is started */
2064 if (!mvmvif->ap_ibss_active)
2067 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2068 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2069 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2070 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2072 /* Need to send a new beacon template to the FW */
2073 if (changes & BSS_CHANGED_BEACON &&
2074 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2075 IWL_WARN(mvm, "Failed updating beacon data\n");
2077 if (changes & BSS_CHANGED_TXPOWER) {
2078 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2080 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2085 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2086 struct ieee80211_vif *vif,
2087 struct ieee80211_bss_conf *bss_conf,
2090 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2093 * iwl_mvm_bss_info_changed_station() might call
2094 * iwl_mvm_protect_session(), which reads directly from
2095 * the device (the system time), so make sure it is available.
2097 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2100 mutex_lock(&mvm->mutex);
2102 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2103 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2105 switch (vif->type) {
2106 case NL80211_IFTYPE_STATION:
2107 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2109 case NL80211_IFTYPE_AP:
2110 case NL80211_IFTYPE_ADHOC:
2111 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2114 /* shouldn't happen */
2118 mutex_unlock(&mvm->mutex);
2119 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2122 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2123 struct ieee80211_vif *vif,
2124 struct ieee80211_scan_request *hw_req)
2126 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2129 if (hw_req->req.n_channels == 0 ||
2130 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2133 mutex_lock(&mvm->mutex);
2134 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2135 mutex_unlock(&mvm->mutex);
2140 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2141 struct ieee80211_vif *vif)
2143 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2145 mutex_lock(&mvm->mutex);
2147 /* Due to a race condition, it's possible that mac80211 asks
2148 * us to stop a hw_scan when it's already stopped. This can
2149 * happen, for instance, if we stopped the scan ourselves,
2150 * called ieee80211_scan_completed() and the userspace called
2151 * cancel scan scan before ieee80211_scan_work() could run.
2152 * To handle that, simply return if the scan is not running.
2154 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2155 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2157 mutex_unlock(&mvm->mutex);
2161 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2162 struct ieee80211_sta *sta, u16 tids,
2164 enum ieee80211_frame_release_type reason,
2167 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2169 /* Called when we need to transmit (a) frame(s) from mac80211 */
2171 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2172 tids, more_data, false);
2176 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2177 struct ieee80211_sta *sta, u16 tids,
2179 enum ieee80211_frame_release_type reason,
2182 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2184 /* Called when we need to transmit (a) frame(s) from agg queue */
2186 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2187 tids, more_data, true);
2190 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2191 struct ieee80211_vif *vif,
2192 enum sta_notify_cmd cmd,
2193 struct ieee80211_sta *sta)
2195 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2196 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2197 unsigned long txqs = 0, tids = 0;
2200 spin_lock_bh(&mvmsta->lock);
2201 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2202 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2204 if (tid_data->state != IWL_AGG_ON &&
2205 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2208 __set_bit(tid_data->txq_id, &txqs);
2210 if (iwl_mvm_tid_queued(tid_data) == 0)
2213 __set_bit(tid, &tids);
2217 case STA_NOTIFY_SLEEP:
2218 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2219 ieee80211_sta_block_awake(hw, sta, true);
2221 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2222 ieee80211_sta_set_buffered(sta, tid, true);
2225 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2227 * The fw updates the STA to be asleep. Tx packets on the Tx
2228 * queues to this station will not be transmitted. The fw will
2229 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2232 case STA_NOTIFY_AWAKE:
2233 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2237 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2238 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2243 spin_unlock_bh(&mvmsta->lock);
2246 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2247 struct ieee80211_vif *vif,
2248 struct ieee80211_sta *sta)
2250 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2251 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2252 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2255 * This is called before mac80211 does RCU synchronisation,
2256 * so here we already invalidate our internal RCU-protected
2257 * station pointer. The rest of the code will thus no longer
2258 * be able to find the station this way, and we don't rely
2259 * on further RCU synchronisation after the sta_state()
2260 * callback deleted the station.
2262 mutex_lock(&mvm->mutex);
2263 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2264 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2267 if (mvm_sta->vif->type == NL80211_IFTYPE_AP) {
2268 mvmvif->ap_assoc_sta_count--;
2269 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2272 mutex_unlock(&mvm->mutex);
2275 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2278 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2281 if (iwlwifi_mod_params.uapsd_disable) {
2282 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2286 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2290 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2291 struct ieee80211_vif *vif, u8 *peer_addr,
2292 enum nl80211_tdls_operation action)
2294 struct iwl_fw_dbg_trigger_tlv *trig;
2295 struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2297 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2300 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2301 tdls_trig = (void *)trig->data;
2302 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2305 if (!(tdls_trig->action_bitmap & BIT(action)))
2308 if (tdls_trig->peer_mode &&
2309 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2312 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2313 "TDLS event occurred, peer %pM, action %d",
2317 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2318 struct ieee80211_vif *vif,
2319 struct ieee80211_sta *sta,
2320 enum ieee80211_sta_state old_state,
2321 enum ieee80211_sta_state new_state)
2323 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2324 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2327 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2328 sta->addr, old_state, new_state);
2330 /* this would be a mac80211 bug ... but don't crash */
2331 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2334 /* if a STA is being removed, reuse its ID */
2335 flush_work(&mvm->sta_drained_wk);
2337 mutex_lock(&mvm->mutex);
2338 if (old_state == IEEE80211_STA_NOTEXIST &&
2339 new_state == IEEE80211_STA_NONE) {
2341 * Firmware bug - it'll crash if the beacon interval is less
2342 * than 16. We can't avoid connecting at all, so refuse the
2343 * station state change, this will cause mac80211 to abandon
2344 * attempts to connect to this AP, and eventually wpa_s will
2345 * blacklist the AP...
2347 if (vif->type == NL80211_IFTYPE_STATION &&
2348 vif->bss_conf.beacon_int < 16) {
2350 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2351 sta->addr, vif->bss_conf.beacon_int);
2358 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2359 IWL_MVM_TDLS_STA_COUNT ||
2360 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2361 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2366 ret = iwl_mvm_add_sta(mvm, vif, sta);
2367 if (sta->tdls && ret == 0) {
2368 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2369 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2370 NL80211_TDLS_SETUP);
2372 } else if (old_state == IEEE80211_STA_NONE &&
2373 new_state == IEEE80211_STA_AUTH) {
2375 * EBS may be disabled due to previous failures reported by FW.
2376 * Reset EBS status here assuming environment has been changed.
2378 mvm->last_ebs_successful = true;
2379 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2381 } else if (old_state == IEEE80211_STA_AUTH &&
2382 new_state == IEEE80211_STA_ASSOC) {
2383 ret = iwl_mvm_update_sta(mvm, vif, sta);
2385 iwl_mvm_rs_rate_init(mvm, sta,
2386 mvmvif->phy_ctxt->channel->band,
2388 } else if (old_state == IEEE80211_STA_ASSOC &&
2389 new_state == IEEE80211_STA_AUTHORIZED) {
2391 /* we don't support TDLS during DCM */
2392 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2393 iwl_mvm_teardown_tdls_peers(mvm);
2396 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2397 NL80211_TDLS_ENABLE_LINK);
2399 /* enable beacon filtering */
2400 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2402 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2403 new_state == IEEE80211_STA_ASSOC) {
2404 /* disable beacon filtering */
2405 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2407 } else if (old_state == IEEE80211_STA_ASSOC &&
2408 new_state == IEEE80211_STA_AUTH) {
2410 } else if (old_state == IEEE80211_STA_AUTH &&
2411 new_state == IEEE80211_STA_NONE) {
2413 } else if (old_state == IEEE80211_STA_NONE &&
2414 new_state == IEEE80211_STA_NOTEXIST) {
2415 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2417 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2418 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2419 NL80211_TDLS_DISABLE_LINK);
2425 mutex_unlock(&mvm->mutex);
2427 if (sta->tdls && ret == 0) {
2428 if (old_state == IEEE80211_STA_NOTEXIST &&
2429 new_state == IEEE80211_STA_NONE)
2430 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2431 else if (old_state == IEEE80211_STA_NONE &&
2432 new_state == IEEE80211_STA_NOTEXIST)
2433 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2439 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2441 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2443 mvm->rts_threshold = value;
2448 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2449 struct ieee80211_vif *vif,
2450 struct ieee80211_sta *sta, u32 changed)
2452 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2454 if (vif->type == NL80211_IFTYPE_STATION &&
2455 changed & IEEE80211_RC_NSS_CHANGED)
2456 iwl_mvm_sf_update(mvm, vif, false);
2459 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2460 struct ieee80211_vif *vif, u16 ac,
2461 const struct ieee80211_tx_queue_params *params)
2463 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2464 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2466 mvmvif->queue_params[ac] = *params;
2469 * No need to update right away, we'll get BSS_CHANGED_QOS
2470 * The exception is P2P_DEVICE interface which needs immediate update.
2472 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2475 mutex_lock(&mvm->mutex);
2476 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2477 mutex_unlock(&mvm->mutex);
2483 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2484 struct ieee80211_vif *vif)
2486 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2487 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2488 200 + vif->bss_conf.beacon_int);
2489 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2490 100 + vif->bss_conf.beacon_int);
2492 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2496 * iwl_mvm_protect_session() reads directly from the device
2497 * (the system time), so make sure it is available.
2499 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2502 mutex_lock(&mvm->mutex);
2503 /* Try really hard to protect the session and hear a beacon */
2504 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2505 mutex_unlock(&mvm->mutex);
2507 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2510 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2511 struct ieee80211_vif *vif,
2512 struct cfg80211_sched_scan_request *req,
2513 struct ieee80211_scan_ies *ies)
2515 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2519 mutex_lock(&mvm->mutex);
2521 if (!vif->bss_conf.idle) {
2526 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2529 mutex_unlock(&mvm->mutex);
2533 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2534 struct ieee80211_vif *vif)
2536 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2539 mutex_lock(&mvm->mutex);
2541 /* Due to a race condition, it's possible that mac80211 asks
2542 * us to stop a sched_scan when it's already stopped. This
2543 * can happen, for instance, if we stopped the scan ourselves,
2544 * called ieee80211_sched_scan_stopped() and the userspace called
2545 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2546 * could run. To handle this, simply return if the scan is
2549 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2550 mutex_unlock(&mvm->mutex);
2554 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2555 mutex_unlock(&mvm->mutex);
2556 iwl_mvm_wait_for_async_handlers(mvm);
2561 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2562 enum set_key_cmd cmd,
2563 struct ieee80211_vif *vif,
2564 struct ieee80211_sta *sta,
2565 struct ieee80211_key_conf *key)
2567 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2571 if (iwlwifi_mod_params.sw_crypto) {
2572 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2576 switch (key->cipher) {
2577 case WLAN_CIPHER_SUITE_TKIP:
2578 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2579 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2581 case WLAN_CIPHER_SUITE_CCMP:
2582 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2584 case WLAN_CIPHER_SUITE_AES_CMAC:
2585 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2587 case WLAN_CIPHER_SUITE_WEP40:
2588 case WLAN_CIPHER_SUITE_WEP104:
2589 /* For non-client mode, only use WEP keys for TX as we probably
2590 * don't have a station yet anyway and would then have to keep
2591 * track of the keys, linking them to each of the clients/peers
2592 * as they appear. For now, don't do that, for performance WEP
2593 * offload doesn't really matter much, but we need it for some
2594 * other offload features in client mode.
2596 if (vif->type != NL80211_IFTYPE_STATION)
2600 /* currently FW supports only one optional cipher scheme */
2601 if (hw->n_cipher_schemes &&
2602 hw->cipher_schemes->cipher == key->cipher)
2603 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2608 mutex_lock(&mvm->mutex);
2612 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2613 vif->type == NL80211_IFTYPE_AP) && !sta) {
2615 * GTK on AP interface is a TX-only key, return 0;
2616 * on IBSS they're per-station and because we're lazy
2617 * we don't support them for RX, so do the same.
2620 key->hw_key_idx = STA_KEY_IDX_INVALID;
2624 /* During FW restart, in order to restore the state as it was,
2625 * don't try to reprogram keys we previously failed for.
2627 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2628 key->hw_key_idx == STA_KEY_IDX_INVALID) {
2629 IWL_DEBUG_MAC80211(mvm,
2630 "skip invalid idx key programming during restart\n");
2635 /* in HW restart reuse the index, otherwise request a new one */
2636 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2637 key_offset = key->hw_key_idx;
2639 key_offset = STA_KEY_IDX_INVALID;
2641 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2642 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2644 IWL_WARN(mvm, "set key failed\n");
2646 * can't add key for RX, but we don't need it
2647 * in the device for TX so still return 0
2649 key->hw_key_idx = STA_KEY_IDX_INVALID;
2655 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2660 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2661 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2667 mutex_unlock(&mvm->mutex);
2671 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2672 struct ieee80211_vif *vif,
2673 struct ieee80211_key_conf *keyconf,
2674 struct ieee80211_sta *sta,
2675 u32 iv32, u16 *phase1key)
2677 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2679 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2682 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2686 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2687 struct iwl_rx_packet *pkt, void *data)
2689 struct iwl_mvm *mvm =
2690 container_of(notif_wait, struct iwl_mvm, notif_wait);
2691 struct iwl_hs20_roc_res *resp;
2692 int resp_len = iwl_rx_packet_payload_len(pkt);
2693 struct iwl_mvm_time_event_data *te_data = data;
2695 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2698 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2699 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2703 resp = (void *)pkt->data;
2706 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2707 resp->status, resp->event_unique_id);
2709 te_data->uid = le32_to_cpu(resp->event_unique_id);
2710 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2713 spin_lock_bh(&mvm->time_event_lock);
2714 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2715 spin_unlock_bh(&mvm->time_event_lock);
2720 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2721 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2722 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2723 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2724 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2725 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2726 struct ieee80211_channel *channel,
2727 struct ieee80211_vif *vif,
2730 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2731 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2732 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2733 static const u16 time_event_response[] = { HOT_SPOT_CMD };
2734 struct iwl_notification_wait wait_time_event;
2735 u32 dtim_interval = vif->bss_conf.dtim_period *
2736 vif->bss_conf.beacon_int;
2738 struct iwl_hs20_roc_req aux_roc_req = {
2739 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2741 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2742 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2743 /* Set the channel info data */
2744 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2745 PHY_BAND_24 : PHY_BAND_5,
2746 .channel_info.channel = channel->hw_value,
2747 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2748 /* Set the time and duration */
2749 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2752 delay = AUX_ROC_MIN_DELAY;
2753 req_dur = MSEC_TO_TU(duration);
2756 * If we are associated we want the delay time to be at least one
2757 * dtim interval so that the FW can wait until after the DTIM and
2758 * then start the time event, this will potentially allow us to
2759 * remain off-channel for the max duration.
2760 * Since we want to use almost a whole dtim interval we would also
2761 * like the delay to be for 2-3 dtim intervals, in case there are
2762 * other time events with higher priority.
2764 if (vif->bss_conf.assoc) {
2765 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2766 /* We cannot remain off-channel longer than the DTIM interval */
2767 if (dtim_interval <= req_dur) {
2768 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2769 if (req_dur <= AUX_ROC_MIN_DURATION)
2770 req_dur = dtim_interval -
2771 AUX_ROC_MIN_SAFETY_BUFFER;
2775 aux_roc_req.duration = cpu_to_le32(req_dur);
2776 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2779 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2780 channel->hw_value, req_dur, duration, delay,
2782 /* Set the node address */
2783 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2785 lockdep_assert_held(&mvm->mutex);
2787 spin_lock_bh(&mvm->time_event_lock);
2789 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2790 spin_unlock_bh(&mvm->time_event_lock);
2795 te_data->duration = duration;
2796 te_data->id = HOT_SPOT_CMD;
2798 spin_unlock_bh(&mvm->time_event_lock);
2801 * Use a notification wait, which really just processes the
2802 * command response and doesn't wait for anything, in order
2803 * to be able to process the response and get the UID inside
2804 * the RX path. Using CMD_WANT_SKB doesn't work because it
2805 * stores the buffer and then wakes up this thread, by which
2806 * time another notification (that the time event started)
2807 * might already be processed unsuccessfully.
2809 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2810 time_event_response,
2811 ARRAY_SIZE(time_event_response),
2812 iwl_mvm_rx_aux_roc, te_data);
2814 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2818 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2819 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2823 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2824 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2825 /* should never fail */
2830 spin_lock_bh(&mvm->time_event_lock);
2831 iwl_mvm_te_clear_data(mvm, te_data);
2832 spin_unlock_bh(&mvm->time_event_lock);
2838 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2839 struct ieee80211_vif *vif,
2840 struct ieee80211_channel *channel,
2842 enum ieee80211_roc_type type)
2844 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2845 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2846 struct cfg80211_chan_def chandef;
2847 struct iwl_mvm_phy_ctxt *phy_ctxt;
2850 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2853 flush_work(&mvm->roc_done_wk);
2855 mutex_lock(&mvm->mutex);
2857 switch (vif->type) {
2858 case NL80211_IFTYPE_STATION:
2859 if (fw_has_capa(&mvm->fw->ucode_capa,
2860 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2861 /* Use aux roc framework (HS20) */
2862 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2866 IWL_ERR(mvm, "hotspot not supported\n");
2869 case NL80211_IFTYPE_P2P_DEVICE:
2873 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2878 for (i = 0; i < NUM_PHY_CTX; i++) {
2879 phy_ctxt = &mvm->phy_ctxts[i];
2880 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2883 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2885 * Unbind the P2P_DEVICE from the current PHY context,
2886 * and if the PHY context is not used remove it.
2888 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2889 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2892 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2894 /* Bind the P2P_DEVICE to the current PHY Context */
2895 mvmvif->phy_ctxt = phy_ctxt;
2897 ret = iwl_mvm_binding_add_vif(mvm, vif);
2898 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2901 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2902 goto schedule_time_event;
2906 /* Need to update the PHY context only if the ROC channel changed */
2907 if (channel == mvmvif->phy_ctxt->channel)
2908 goto schedule_time_event;
2910 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2913 * Change the PHY context configuration as it is currently referenced
2914 * only by the P2P Device MAC
2916 if (mvmvif->phy_ctxt->ref == 1) {
2917 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2923 * The PHY context is shared with other MACs. Need to remove the
2924 * P2P Device from the binding, allocate an new PHY context and
2925 * create a new binding
2927 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2933 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2936 IWL_ERR(mvm, "Failed to change PHY context\n");
2940 /* Unbind the P2P_DEVICE from the current PHY context */
2941 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2942 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2945 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2947 /* Bind the P2P_DEVICE to the new allocated PHY context */
2948 mvmvif->phy_ctxt = phy_ctxt;
2950 ret = iwl_mvm_binding_add_vif(mvm, vif);
2951 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2954 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2957 schedule_time_event:
2958 /* Schedule the time events */
2959 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2962 mutex_unlock(&mvm->mutex);
2963 IWL_DEBUG_MAC80211(mvm, "leave\n");
2967 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2969 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2971 IWL_DEBUG_MAC80211(mvm, "enter\n");
2973 mutex_lock(&mvm->mutex);
2974 iwl_mvm_stop_roc(mvm);
2975 mutex_unlock(&mvm->mutex);
2977 IWL_DEBUG_MAC80211(mvm, "leave\n");
2981 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2982 struct ieee80211_chanctx_conf *ctx)
2984 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2985 struct iwl_mvm_phy_ctxt *phy_ctxt;
2988 lockdep_assert_held(&mvm->mutex);
2990 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2992 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2998 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2999 ctx->rx_chains_static,
3000 ctx->rx_chains_dynamic);
3002 IWL_ERR(mvm, "Failed to add PHY context\n");
3006 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3007 *phy_ctxt_id = phy_ctxt->id;
3012 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3013 struct ieee80211_chanctx_conf *ctx)
3015 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3018 mutex_lock(&mvm->mutex);
3019 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3020 mutex_unlock(&mvm->mutex);
3025 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3026 struct ieee80211_chanctx_conf *ctx)
3028 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3029 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3031 lockdep_assert_held(&mvm->mutex);
3033 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3036 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3037 struct ieee80211_chanctx_conf *ctx)
3039 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3041 mutex_lock(&mvm->mutex);
3042 __iwl_mvm_remove_chanctx(mvm, ctx);
3043 mutex_unlock(&mvm->mutex);
3046 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3047 struct ieee80211_chanctx_conf *ctx,
3050 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3051 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3052 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3054 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3055 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3056 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3057 IEEE80211_CHANCTX_CHANGE_RADAR |
3058 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3059 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3060 phy_ctxt->ref, changed))
3063 mutex_lock(&mvm->mutex);
3064 iwl_mvm_bt_coex_vif_change(mvm);
3065 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3066 ctx->rx_chains_static,
3067 ctx->rx_chains_dynamic);
3068 mutex_unlock(&mvm->mutex);
3071 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3072 struct ieee80211_vif *vif,
3073 struct ieee80211_chanctx_conf *ctx,
3074 bool switching_chanctx)
3076 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3077 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3078 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3081 lockdep_assert_held(&mvm->mutex);
3083 mvmvif->phy_ctxt = phy_ctxt;
3085 switch (vif->type) {
3086 case NL80211_IFTYPE_AP:
3087 /* only needed if we're switching chanctx (i.e. during CSA) */
3088 if (switching_chanctx) {
3089 mvmvif->ap_ibss_active = true;
3092 case NL80211_IFTYPE_ADHOC:
3094 * The AP binding flow is handled as part of the start_ap flow
3095 * (in bss_info_changed), similarly for IBSS.
3099 case NL80211_IFTYPE_STATION:
3101 case NL80211_IFTYPE_MONITOR:
3102 /* always disable PS when a monitor interface is active */
3103 mvmvif->ps_disabled = true;
3110 ret = iwl_mvm_binding_add_vif(mvm, vif);
3115 * Power state must be updated before quotas,
3116 * otherwise fw will complain.
3118 iwl_mvm_power_update_mac(mvm);
3120 /* Setting the quota at this stage is only required for monitor
3121 * interfaces. For the other types, the bss_info changed flow
3122 * will handle quota settings.
3124 if (vif->type == NL80211_IFTYPE_MONITOR) {
3125 mvmvif->monitor_active = true;
3126 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3128 goto out_remove_binding;
3130 ret = iwl_mvm_add_snif_sta(mvm, vif);
3132 goto out_remove_binding;
3136 /* Handle binding during CSA */
3137 if (vif->type == NL80211_IFTYPE_AP) {
3138 iwl_mvm_update_quotas(mvm, false, NULL);
3139 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3142 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3143 u32 duration = 2 * vif->bss_conf.beacon_int;
3145 /* iwl_mvm_protect_session() reads directly from the
3146 * device (the system time), so make sure it is
3149 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3151 goto out_remove_binding;
3153 /* Protect the session to make sure we hear the first
3154 * beacon on the new channel.
3156 iwl_mvm_protect_session(mvm, vif, duration, duration,
3157 vif->bss_conf.beacon_int / 2,
3160 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3162 iwl_mvm_update_quotas(mvm, false, NULL);
3168 iwl_mvm_binding_remove_vif(mvm, vif);
3169 iwl_mvm_power_update_mac(mvm);
3172 mvmvif->phy_ctxt = NULL;
3175 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3176 struct ieee80211_vif *vif,
3177 struct ieee80211_chanctx_conf *ctx)
3179 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3182 mutex_lock(&mvm->mutex);
3183 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3184 mutex_unlock(&mvm->mutex);
3189 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3190 struct ieee80211_vif *vif,
3191 struct ieee80211_chanctx_conf *ctx,
3192 bool switching_chanctx)
3194 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3195 struct ieee80211_vif *disabled_vif = NULL;
3197 lockdep_assert_held(&mvm->mutex);
3199 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3201 switch (vif->type) {
3202 case NL80211_IFTYPE_ADHOC:
3204 case NL80211_IFTYPE_MONITOR:
3205 mvmvif->monitor_active = false;
3206 mvmvif->ps_disabled = false;
3207 iwl_mvm_rm_snif_sta(mvm, vif);
3209 case NL80211_IFTYPE_AP:
3210 /* This part is triggered only during CSA */
3211 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3214 mvmvif->csa_countdown = false;
3216 /* Set CS bit on all the stations */
3217 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3219 /* Save blocked iface, the timeout is set on the next beacon */
3220 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3222 mvmvif->ap_ibss_active = false;
3224 case NL80211_IFTYPE_STATION:
3225 if (!switching_chanctx)
3230 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3236 iwl_mvm_update_quotas(mvm, false, disabled_vif);
3237 iwl_mvm_binding_remove_vif(mvm, vif);
3240 mvmvif->phy_ctxt = NULL;
3241 iwl_mvm_power_update_mac(mvm);
3244 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3245 struct ieee80211_vif *vif,
3246 struct ieee80211_chanctx_conf *ctx)
3248 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3250 mutex_lock(&mvm->mutex);
3251 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3252 mutex_unlock(&mvm->mutex);
3256 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3257 struct ieee80211_vif_chanctx_switch *vifs)
3261 mutex_lock(&mvm->mutex);
3262 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3263 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3265 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3267 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3271 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3275 "failed to assign new_ctx during channel switch\n");
3279 /* we don't support TDLS during DCM - can be caused by channel switch */
3280 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3281 iwl_mvm_teardown_tdls_peers(mvm);
3286 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3289 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3290 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3294 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3296 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3303 /* things keep failing, better restart the hw */
3304 iwl_mvm_nic_restart(mvm, false);
3307 mutex_unlock(&mvm->mutex);
3313 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3314 struct ieee80211_vif_chanctx_switch *vifs)
3318 mutex_lock(&mvm->mutex);
3319 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3321 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3325 "failed to assign new_ctx during channel switch\n");
3332 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3334 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3341 /* things keep failing, better restart the hw */
3342 iwl_mvm_nic_restart(mvm, false);
3345 mutex_unlock(&mvm->mutex);
3350 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3351 struct ieee80211_vif_chanctx_switch *vifs,
3353 enum ieee80211_chanctx_switch_mode mode)
3355 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3358 /* we only support a single-vif right now */
3363 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3364 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3366 case CHANCTX_SWMODE_REASSIGN_VIF:
3367 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3377 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3378 struct ieee80211_sta *sta,
3381 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3382 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3384 if (!mvm_sta || !mvm_sta->vif) {
3385 IWL_ERR(mvm, "Station is not associated to a vif\n");
3389 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3392 #ifdef CONFIG_NL80211_TESTMODE
3393 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3394 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3395 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3396 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3399 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3400 struct ieee80211_vif *vif,
3401 void *data, int len)
3403 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3407 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3411 if (!tb[IWL_MVM_TM_ATTR_CMD])
3414 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3415 case IWL_MVM_TM_CMD_SET_NOA:
3416 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3417 !vif->bss_conf.enable_beacon ||
3418 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3421 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3422 if (noa_duration >= vif->bss_conf.beacon_int)
3425 mvm->noa_duration = noa_duration;
3428 return iwl_mvm_update_quotas(mvm, false, NULL);
3429 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3430 /* must be associated client vif - ignore authorized */
3431 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3432 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3433 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3436 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3437 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3438 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3444 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3445 struct ieee80211_vif *vif,
3446 void *data, int len)
3448 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3451 mutex_lock(&mvm->mutex);
3452 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3453 mutex_unlock(&mvm->mutex);
3459 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3460 struct ieee80211_vif *vif,
3461 struct ieee80211_channel_switch *chsw)
3463 /* By implementing this operation, we prevent mac80211 from
3464 * starting its own channel switch timer, so that we can call
3465 * ieee80211_chswitch_done() ourselves at the right time
3466 * (which is when the absence time event starts).
3469 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3470 "dummy channel switch op\n");
3473 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3474 struct ieee80211_vif *vif,
3475 struct ieee80211_channel_switch *chsw)
3477 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3478 struct ieee80211_vif *csa_vif;
3479 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3483 mutex_lock(&mvm->mutex);
3485 mvmvif->csa_failed = false;
3487 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3488 chsw->chandef.center_freq1);
3490 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3492 switch (vif->type) {
3493 case NL80211_IFTYPE_AP:
3495 rcu_dereference_protected(mvm->csa_vif,
3496 lockdep_is_held(&mvm->mutex));
3497 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3498 "Another CSA is already in progress")) {
3503 rcu_assign_pointer(mvm->csa_vif, vif);
3505 if (WARN_ONCE(mvmvif->csa_countdown,
3506 "Previous CSA countdown didn't complete")) {
3512 case NL80211_IFTYPE_STATION:
3513 /* Schedule the time event to a bit before beacon 1,
3514 * to make sure we're in the new channel when the
3517 apply_time = chsw->device_timestamp +
3518 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3519 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3522 iwl_mvm_csa_client_absent(mvm, vif);
3524 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3526 if (mvmvif->bf_data.bf_enabled) {
3527 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3537 mvmvif->ps_disabled = true;
3539 ret = iwl_mvm_power_update_ps(mvm);
3543 /* we won't be on this channel any longer */
3544 iwl_mvm_teardown_tdls_peers(mvm);
3547 mutex_unlock(&mvm->mutex);
3552 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3553 struct ieee80211_vif *vif)
3555 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3556 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3559 mutex_lock(&mvm->mutex);
3561 if (mvmvif->csa_failed) {
3562 mvmvif->csa_failed = false;
3567 if (vif->type == NL80211_IFTYPE_STATION) {
3568 struct iwl_mvm_sta *mvmsta;
3570 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3573 if (WARN_ON(!mvmsta)) {
3578 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3580 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3582 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3586 iwl_mvm_stop_session_protection(mvm, vif);
3589 mvmvif->ps_disabled = false;
3591 ret = iwl_mvm_power_update_ps(mvm);
3594 mutex_unlock(&mvm->mutex);
3599 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3600 struct ieee80211_vif *vif, u32 queues, bool drop)
3602 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3603 struct iwl_mvm_vif *mvmvif;
3604 struct iwl_mvm_sta *mvmsta;
3605 struct ieee80211_sta *sta;
3609 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3612 mutex_lock(&mvm->mutex);
3613 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3615 /* flush the AP-station and all TDLS peers */
3616 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3617 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3618 lockdep_is_held(&mvm->mutex));
3619 if (IS_ERR_OR_NULL(sta))
3622 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3623 if (mvmsta->vif != vif)
3626 /* make sure only TDLS peers or the AP are flushed */
3627 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3629 msk |= mvmsta->tfd_queue_msk;
3633 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3634 IWL_ERR(mvm, "flush request fail\n");
3635 mutex_unlock(&mvm->mutex);
3637 mutex_unlock(&mvm->mutex);
3639 /* this can take a while, and we may need/want other operations
3640 * to succeed while doing this, so do it without the mutex held
3642 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3646 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3647 struct survey_info *survey)
3649 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3652 memset(survey, 0, sizeof(*survey));
3654 /* only support global statistics right now */
3658 if (fw_has_capa(&mvm->fw->ucode_capa,
3659 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3662 mutex_lock(&mvm->mutex);
3664 if (mvm->ucode_loaded) {
3665 ret = iwl_mvm_request_statistics(mvm, false);
3670 survey->filled = SURVEY_INFO_TIME |
3671 SURVEY_INFO_TIME_RX |
3672 SURVEY_INFO_TIME_TX |
3673 SURVEY_INFO_TIME_SCAN;
3674 survey->time = mvm->accu_radio_stats.on_time_rf +
3675 mvm->radio_stats.on_time_rf;
3676 do_div(survey->time, USEC_PER_MSEC);
3678 survey->time_rx = mvm->accu_radio_stats.rx_time +
3679 mvm->radio_stats.rx_time;
3680 do_div(survey->time_rx, USEC_PER_MSEC);
3682 survey->time_tx = mvm->accu_radio_stats.tx_time +
3683 mvm->radio_stats.tx_time;
3684 do_div(survey->time_tx, USEC_PER_MSEC);
3686 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3687 mvm->radio_stats.on_time_scan;
3688 do_div(survey->time_scan, USEC_PER_MSEC);
3692 mutex_unlock(&mvm->mutex);
3696 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3697 struct ieee80211_vif *vif,
3698 struct ieee80211_sta *sta,
3699 struct station_info *sinfo)
3701 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3702 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3703 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3705 if (fw_has_capa(&mvm->fw->ucode_capa,
3706 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3709 /* if beacon filtering isn't on mac80211 does it anyway */
3710 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3713 if (!vif->bss_conf.assoc)
3716 mutex_lock(&mvm->mutex);
3718 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3721 if (iwl_mvm_request_statistics(mvm, false))
3724 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3725 mvmvif->beacon_stats.accu_num_beacons;
3726 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3727 if (mvmvif->beacon_stats.avg_signal) {
3728 /* firmware only reports a value after RXing a few beacons */
3729 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3730 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3733 mutex_unlock(&mvm->mutex);
3736 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3737 struct ieee80211_vif *vif,
3738 const struct ieee80211_event *event)
3740 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
3742 if ((_cnt) && --(_cnt)) \
3744 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3747 struct iwl_fw_dbg_trigger_tlv *trig;
3748 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3750 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3753 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3754 trig_mlme = (void *)trig->data;
3755 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3758 if (event->u.mlme.data == ASSOC_EVENT) {
3759 if (event->u.mlme.status == MLME_DENIED)
3760 CHECK_MLME_TRIGGER(mvm, trig, buf,
3761 trig_mlme->stop_assoc_denied,
3762 "DENIED ASSOC: reason %d",
3763 event->u.mlme.reason);
3764 else if (event->u.mlme.status == MLME_TIMEOUT)
3765 CHECK_MLME_TRIGGER(mvm, trig, buf,
3766 trig_mlme->stop_assoc_timeout,
3768 } else if (event->u.mlme.data == AUTH_EVENT) {
3769 if (event->u.mlme.status == MLME_DENIED)
3770 CHECK_MLME_TRIGGER(mvm, trig, buf,
3771 trig_mlme->stop_auth_denied,
3772 "DENIED AUTH: reason %d",
3773 event->u.mlme.reason);
3774 else if (event->u.mlme.status == MLME_TIMEOUT)
3775 CHECK_MLME_TRIGGER(mvm, trig, buf,
3776 trig_mlme->stop_auth_timeout,
3778 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3779 CHECK_MLME_TRIGGER(mvm, trig, buf,
3780 trig_mlme->stop_rx_deauth,
3781 "DEAUTH RX %d", event->u.mlme.reason);
3782 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3783 CHECK_MLME_TRIGGER(mvm, trig, buf,
3784 trig_mlme->stop_tx_deauth,
3785 "DEAUTH TX %d", event->u.mlme.reason);
3787 #undef CHECK_MLME_TRIGGER
3790 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3791 struct ieee80211_vif *vif,
3792 const struct ieee80211_event *event)
3794 struct iwl_fw_dbg_trigger_tlv *trig;
3795 struct iwl_fw_dbg_trigger_ba *ba_trig;
3797 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3800 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3801 ba_trig = (void *)trig->data;
3802 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3805 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3808 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3809 "BAR received from %pM, tid %d, ssn %d",
3810 event->u.ba.sta->addr, event->u.ba.tid,
3815 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3816 struct ieee80211_vif *vif,
3817 const struct ieee80211_event *event)
3819 struct iwl_fw_dbg_trigger_tlv *trig;
3820 struct iwl_fw_dbg_trigger_ba *ba_trig;
3822 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3825 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3826 ba_trig = (void *)trig->data;
3827 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3830 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3833 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3834 "Frame from %pM timed out, tid %d",
3835 event->u.ba.sta->addr, event->u.ba.tid);
3838 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3839 struct ieee80211_vif *vif,
3840 const struct ieee80211_event *event)
3842 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3844 switch (event->type) {
3846 iwl_mvm_event_mlme_callback(mvm, vif, event);
3849 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3851 case BA_FRAME_TIMEOUT:
3852 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3859 const struct ieee80211_ops iwl_mvm_hw_ops = {
3860 .tx = iwl_mvm_mac_tx,
3861 .ampdu_action = iwl_mvm_mac_ampdu_action,
3862 .start = iwl_mvm_mac_start,
3863 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3864 .stop = iwl_mvm_mac_stop,
3865 .add_interface = iwl_mvm_mac_add_interface,
3866 .remove_interface = iwl_mvm_mac_remove_interface,
3867 .config = iwl_mvm_mac_config,
3868 .prepare_multicast = iwl_mvm_prepare_multicast,
3869 .configure_filter = iwl_mvm_configure_filter,
3870 .config_iface_filter = iwl_mvm_config_iface_filter,
3871 .bss_info_changed = iwl_mvm_bss_info_changed,
3872 .hw_scan = iwl_mvm_mac_hw_scan,
3873 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3874 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3875 .sta_state = iwl_mvm_mac_sta_state,
3876 .sta_notify = iwl_mvm_mac_sta_notify,
3877 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3878 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3879 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3880 .sta_rc_update = iwl_mvm_sta_rc_update,
3881 .conf_tx = iwl_mvm_mac_conf_tx,
3882 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3883 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3884 .flush = iwl_mvm_mac_flush,
3885 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3886 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3887 .set_key = iwl_mvm_mac_set_key,
3888 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3889 .remain_on_channel = iwl_mvm_roc,
3890 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3891 .add_chanctx = iwl_mvm_add_chanctx,
3892 .remove_chanctx = iwl_mvm_remove_chanctx,
3893 .change_chanctx = iwl_mvm_change_chanctx,
3894 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3895 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3896 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3898 .start_ap = iwl_mvm_start_ap_ibss,
3899 .stop_ap = iwl_mvm_stop_ap_ibss,
3900 .join_ibss = iwl_mvm_start_ap_ibss,
3901 .leave_ibss = iwl_mvm_stop_ap_ibss,
3903 .set_tim = iwl_mvm_set_tim,
3905 .channel_switch = iwl_mvm_channel_switch,
3906 .pre_channel_switch = iwl_mvm_pre_channel_switch,
3907 .post_channel_switch = iwl_mvm_post_channel_switch,
3909 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3910 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3911 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3913 .event_callback = iwl_mvm_mac_event_callback,
3915 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3917 #ifdef CONFIG_PM_SLEEP
3919 .suspend = iwl_mvm_suspend,
3920 .resume = iwl_mvm_resume,
3921 .set_wakeup = iwl_mvm_set_wakeup,
3922 .set_rekey_data = iwl_mvm_set_rekey_data,
3923 #if IS_ENABLED(CONFIG_IPV6)
3924 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3926 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3928 .get_survey = iwl_mvm_mac_get_survey,
3929 .sta_statistics = iwl_mvm_mac_sta_statistics,