1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *****************************************************************************/
65 #include <linux/kernel.h>
66 #include <linux/slab.h>
67 #include <linux/skbuff.h>
68 #include <linux/netdevice.h>
69 #include <linux/etherdevice.h>
71 #include <linux/if_arp.h>
72 #include <linux/devcoredump.h>
73 #include <net/mac80211.h>
74 #include <net/ieee80211_radiotap.h>
77 #include "iwl-op-mode.h"
81 #include "time-event.h"
82 #include "iwl-eeprom-parse.h"
83 #include "fw-api-scan.h"
84 #include "iwl-phy-db.h"
86 #include "iwl-fw-error-dump.h"
90 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
93 .types = BIT(NL80211_IFTYPE_STATION),
97 .types = BIT(NL80211_IFTYPE_AP) |
98 BIT(NL80211_IFTYPE_P2P_CLIENT) |
99 BIT(NL80211_IFTYPE_P2P_GO),
103 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
107 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
109 .num_different_channels = 2,
111 .limits = iwl_mvm_limits,
112 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
116 #ifdef CONFIG_PM_SLEEP
117 static const struct nl80211_wowlan_tcp_data_token_feature
118 iwl_mvm_wowlan_tcp_token_feature = {
121 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
124 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
125 .tok = &iwl_mvm_wowlan_tcp_token_feature,
126 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
127 sizeof(struct ethhdr) -
128 sizeof(struct iphdr) -
129 sizeof(struct tcphdr),
130 .data_interval_max = 65535, /* __le16 in API */
131 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
132 sizeof(struct ethhdr) -
133 sizeof(struct iphdr) -
134 sizeof(struct tcphdr),
139 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
141 * Use the reserved field to indicate magic values.
142 * these values will only be used internally by the driver,
143 * and won't make it to the fw (reserved will be 0).
144 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
145 * be the vif's ip address. in case there is not a single
146 * ip address (0, or more than 1), this attribute will
148 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
149 * the LSB bytes of the vif's mac address
152 BC_FILTER_MAGIC_NONE = 0,
157 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
161 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
164 /* frame type - arp, hw type - ethernet */
166 BCAST_FILTER_OFFSET_PAYLOAD_START,
167 .offset = sizeof(rfc1042_header),
168 .val = cpu_to_be32(0x08060001),
169 .mask = cpu_to_be32(0xffffffff),
174 BCAST_FILTER_OFFSET_PAYLOAD_START,
175 .offset = sizeof(rfc1042_header) + 2 +
176 sizeof(struct arphdr) +
177 ETH_ALEN + sizeof(__be32) +
179 .mask = cpu_to_be32(0xffffffff),
180 /* mark it as special field */
181 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
186 /* dhcp offer bcast */
188 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
191 /* udp dest port - 68 (bootp client)*/
192 .offset_type = BCAST_FILTER_OFFSET_IP_END,
193 .offset = offsetof(struct udphdr, dest),
194 .val = cpu_to_be32(0x00440000),
195 .mask = cpu_to_be32(0xffff0000),
198 /* dhcp - lsb bytes of client hw address */
199 .offset_type = BCAST_FILTER_OFFSET_IP_END,
201 .mask = cpu_to_be32(0xffffffff),
202 /* mark it as special field */
203 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
207 /* last filter must be empty */
212 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
214 if (!iwl_mvm_is_d0i3_supported(mvm))
217 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
218 spin_lock_bh(&mvm->refs_lock);
219 mvm->refs[ref_type]++;
220 spin_unlock_bh(&mvm->refs_lock);
221 iwl_trans_ref(mvm->trans);
224 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
226 if (!iwl_mvm_is_d0i3_supported(mvm))
229 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
230 spin_lock_bh(&mvm->refs_lock);
231 WARN_ON(!mvm->refs[ref_type]--);
232 spin_unlock_bh(&mvm->refs_lock);
233 iwl_trans_unref(mvm->trans);
236 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
237 enum iwl_mvm_ref_type except_ref)
241 if (!iwl_mvm_is_d0i3_supported(mvm))
244 spin_lock_bh(&mvm->refs_lock);
245 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
246 if (except_ref == i || !mvm->refs[i])
249 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
251 for (j = 0; j < mvm->refs[i]; j++)
252 iwl_trans_unref(mvm->trans);
255 spin_unlock_bh(&mvm->refs_lock);
258 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
263 if (!iwl_mvm_is_d0i3_supported(mvm))
266 spin_lock_bh(&mvm->refs_lock);
267 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
273 spin_unlock_bh(&mvm->refs_lock);
278 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
280 iwl_mvm_ref(mvm, ref_type);
282 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
283 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
286 iwl_mvm_unref(mvm, ref_type);
293 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
297 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
298 for (i = 0; i < NUM_PHY_CTX; i++) {
299 mvm->phy_ctxts[i].id = i;
300 mvm->phy_ctxts[i].ref = 0;
304 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
306 struct ieee80211_hw *hw = mvm->hw;
309 /* Tell mac80211 our characteristics */
310 hw->flags = IEEE80211_HW_SIGNAL_DBM |
311 IEEE80211_HW_SPECTRUM_MGMT |
312 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
313 IEEE80211_HW_QUEUE_CONTROL |
314 IEEE80211_HW_WANT_MONITOR_VIF |
315 IEEE80211_HW_SUPPORTS_PS |
316 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
317 IEEE80211_HW_AMPDU_AGGREGATION |
318 IEEE80211_HW_TIMING_BEACON_ONLY |
319 IEEE80211_HW_CONNECTION_MONITOR |
320 IEEE80211_HW_CHANCTX_STA_CSA |
321 IEEE80211_HW_SUPPORTS_CLONED_SKBS;
323 hw->queues = mvm->first_agg_queue;
324 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
325 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
326 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
327 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
328 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
329 hw->rate_control_algorithm = "iwl-mvm-rs";
330 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
331 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
334 * Enable 11w if advertised by firmware and software crypto
335 * is not enabled (as the firmware will interpret some mgmt
336 * packets, so enabling it with software crypto isn't safe)
338 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
339 !iwlwifi_mod_params.sw_crypto)
340 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
342 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
343 hw->wiphy->features |=
344 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
345 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
347 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
348 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
349 hw->chanctx_data_size = sizeof(u16);
351 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
352 BIT(NL80211_IFTYPE_P2P_CLIENT) |
353 BIT(NL80211_IFTYPE_AP) |
354 BIT(NL80211_IFTYPE_P2P_GO) |
355 BIT(NL80211_IFTYPE_P2P_DEVICE) |
356 BIT(NL80211_IFTYPE_ADHOC);
358 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
359 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
360 REGULATORY_DISABLE_BEACON_HINTS;
362 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
363 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
365 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
367 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
368 hw->wiphy->n_iface_combinations =
369 ARRAY_SIZE(iwl_mvm_iface_combinations);
371 hw->wiphy->max_remain_on_channel_duration = 10000;
372 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
373 /* we can compensate an offset of up to 3 channels = 15 MHz */
374 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
376 /* Extract MAC address */
377 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
378 hw->wiphy->addresses = mvm->addresses;
379 hw->wiphy->n_addresses = 1;
381 /* Extract additional MAC addresses if available */
382 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
383 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
385 for (i = 1; i < num_mac; i++) {
386 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
388 mvm->addresses[i].addr[5]++;
389 hw->wiphy->n_addresses++;
392 iwl_mvm_reset_phy_ctxts(mvm);
394 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
396 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
398 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
399 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
400 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
401 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
402 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
403 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
405 if ((mvm->fw->ucode_capa.capa[0] &
406 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
407 (mvm->fw->ucode_capa.api[0] &
408 IWL_UCODE_TLV_API_LQ_SS_PARAMS))
409 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
410 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
413 hw->wiphy->hw_version = mvm->trans->hw_id;
415 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
416 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
418 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
420 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
421 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
422 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
423 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
424 /* we create the 802.11 header and zero length SSID IE. */
425 hw->wiphy->max_sched_scan_ie_len =
426 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
429 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
430 NL80211_FEATURE_LOW_PRIORITY_SCAN |
431 NL80211_FEATURE_P2P_GO_OPPPS |
432 NL80211_FEATURE_DYNAMIC_SMPS |
433 NL80211_FEATURE_STATIC_SMPS |
434 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
436 if (mvm->fw->ucode_capa.capa[0] &
437 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
438 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
439 if (mvm->fw->ucode_capa.capa[0] &
440 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
441 hw->wiphy->features |= NL80211_FEATURE_QUIET;
443 if (mvm->fw->ucode_capa.capa[0] &
444 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
445 hw->wiphy->features |=
446 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
448 if (mvm->fw->ucode_capa.capa[0] &
449 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
450 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
452 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
454 /* currently FW API supports only one optional cipher scheme */
455 if (mvm->fw->cs[0].cipher) {
456 mvm->hw->n_cipher_schemes = 1;
457 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
460 #ifdef CONFIG_PM_SLEEP
461 if (iwl_mvm_is_d0i3_supported(mvm) &&
462 device_can_wakeup(mvm->trans->dev)) {
463 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
464 hw->wiphy->wowlan = &mvm->wowlan;
467 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
468 mvm->trans->ops->d3_suspend &&
469 mvm->trans->ops->d3_resume &&
470 device_can_wakeup(mvm->trans->dev)) {
471 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
472 WIPHY_WOWLAN_DISCONNECT |
473 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
474 WIPHY_WOWLAN_RFKILL_RELEASE |
475 WIPHY_WOWLAN_NET_DETECT;
476 if (!iwlwifi_mod_params.sw_crypto)
477 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
478 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
479 WIPHY_WOWLAN_4WAY_HANDSHAKE;
481 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
482 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
483 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
484 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
485 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
486 hw->wiphy->wowlan = &mvm->wowlan;
490 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
491 /* assign default bcast filtering configuration */
492 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
495 ret = iwl_mvm_leds_init(mvm);
499 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
500 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
501 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
504 if (mvm->fw->ucode_capa.capa[0] &
505 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
506 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
507 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
510 ret = ieee80211_register_hw(mvm->hw);
512 iwl_mvm_leds_exit(mvm);
517 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
518 struct ieee80211_sta *sta,
521 struct iwl_mvm_sta *mvmsta;
525 * double check the IN_D0I3 flag both before and after
526 * taking the spinlock, in order to prevent taking
527 * the spinlock when not needed.
529 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
532 spin_lock(&mvm->d0i3_tx_lock);
534 * testing the flag again ensures the skb dequeue
535 * loop (on d0i3 exit) hasn't run yet.
537 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
540 mvmsta = iwl_mvm_sta_from_mac80211(sta);
541 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
542 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
545 __skb_queue_tail(&mvm->d0i3_tx, skb);
546 ieee80211_stop_queues(mvm->hw);
549 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
550 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
554 spin_unlock(&mvm->d0i3_tx_lock);
558 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
559 struct ieee80211_tx_control *control,
562 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
563 struct ieee80211_sta *sta = control->sta;
564 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
565 struct ieee80211_hdr *hdr = (void *)skb->data;
567 if (iwl_mvm_is_radio_killed(mvm)) {
568 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
572 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
573 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
574 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
577 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
578 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
579 ieee80211_is_mgmt(hdr->frame_control) &&
580 !ieee80211_is_deauth(hdr->frame_control) &&
581 !ieee80211_is_disassoc(hdr->frame_control) &&
582 !ieee80211_is_action(hdr->frame_control)))
586 if (iwl_mvm_defer_tx(mvm, sta, skb))
588 if (iwl_mvm_tx_skb(mvm, skb, sta))
593 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
597 ieee80211_free_txskb(hw, skb);
600 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
602 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
607 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
609 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
611 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
614 /* enabled by default */
618 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
619 struct ieee80211_vif *vif,
620 enum ieee80211_ampdu_mlme_action action,
621 struct ieee80211_sta *sta, u16 tid,
622 u16 *ssn, u8 buf_size)
624 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
626 bool tx_agg_ref = false;
628 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
629 sta->addr, tid, action);
631 if (!(mvm->nvm_data->sku_cap_11n_enable))
634 /* return from D0i3 before starting a new Tx aggregation */
636 case IEEE80211_AMPDU_TX_START:
637 case IEEE80211_AMPDU_TX_STOP_CONT:
638 case IEEE80211_AMPDU_TX_STOP_FLUSH:
639 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
640 case IEEE80211_AMPDU_TX_OPERATIONAL:
642 * for tx start, wait synchronously until D0i3 exit to
643 * get the correct sequence number for the tid.
644 * additionally, some other ampdu actions use direct
645 * target access, which is not handled automatically
646 * by the trans layer (unlike commands), so wait for
647 * d0i3 exit in these cases as well.
649 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
659 mutex_lock(&mvm->mutex);
662 case IEEE80211_AMPDU_RX_START:
663 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
667 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
669 case IEEE80211_AMPDU_RX_STOP:
670 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
672 case IEEE80211_AMPDU_TX_START:
673 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
677 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
679 case IEEE80211_AMPDU_TX_STOP_CONT:
680 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
682 case IEEE80211_AMPDU_TX_STOP_FLUSH:
683 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
684 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
686 case IEEE80211_AMPDU_TX_OPERATIONAL:
687 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
694 mutex_unlock(&mvm->mutex);
697 * If the tid is marked as started, we won't use it for offloaded
698 * traffic on the next D0i3 entry. It's safe to unref.
701 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
706 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
707 struct ieee80211_vif *vif)
709 struct iwl_mvm *mvm = data;
710 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
712 mvmvif->uploaded = false;
713 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
715 spin_lock_bh(&mvm->time_event_lock);
716 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
717 spin_unlock_bh(&mvm->time_event_lock);
719 mvmvif->phy_ctxt = NULL;
720 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
723 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
724 const void *data, size_t datalen)
726 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
728 ssize_t bytes_read_trans;
730 if (offset < dump_ptrs->op_mode_len) {
731 bytes_read = min_t(ssize_t, count,
732 dump_ptrs->op_mode_len - offset);
733 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
735 offset += bytes_read;
744 if (!dump_ptrs->trans_ptr)
747 offset -= dump_ptrs->op_mode_len;
748 bytes_read_trans = min_t(ssize_t, count,
749 dump_ptrs->trans_ptr->len - offset);
750 memcpy(buffer + bytes_read,
751 (u8 *)dump_ptrs->trans_ptr->data + offset,
754 return bytes_read + bytes_read_trans;
757 static void iwl_mvm_free_coredump(const void *data)
759 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
761 vfree(fw_error_dump->op_mode_ptr);
762 vfree(fw_error_dump->trans_ptr);
763 kfree(fw_error_dump);
766 static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
767 struct iwl_fw_error_dump_data **dump_data)
769 struct iwl_fw_error_dump_fifo *fifo_hdr;
775 if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
778 /* Pull RXF data from all RXFs */
779 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
781 * Keep aside the additional offset that might be needed for
784 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
786 fifo_hdr = (void *)(*dump_data)->data;
787 fifo_data = (void *)fifo_hdr->data;
788 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
790 /* No need to try to read the data if the length is 0 */
794 /* Add a TLV for the RXF */
795 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
796 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
798 fifo_hdr->fifo_num = cpu_to_le32(i);
799 fifo_hdr->available_bytes =
800 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
804 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
808 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
811 fifo_hdr->fence_ptr =
812 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
815 fifo_hdr->fence_mode =
816 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
821 iwl_trans_write_prph(mvm->trans,
822 RXF_SET_FENCE_MODE + offset_diff, 0x1);
823 /* Set fence pointer to the same place like WR pointer */
824 iwl_trans_write_prph(mvm->trans,
825 RXF_LD_WR2FENCE + offset_diff, 0x1);
826 /* Set fence offset */
827 iwl_trans_write_prph(mvm->trans,
828 RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
832 fifo_len /= sizeof(u32); /* Size in DWORDS */
833 for (j = 0; j < fifo_len; j++)
834 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
835 RXF_FIFO_RD_FENCE_INC +
837 *dump_data = iwl_fw_error_next_data(*dump_data);
840 /* Pull TXF data from all TXFs */
841 for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
842 /* Mark the number of TXF we're pulling now */
843 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
845 fifo_hdr = (void *)(*dump_data)->data;
846 fifo_data = (void *)fifo_hdr->data;
847 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
849 /* No need to try to read the data if the length is 0 */
853 /* Add a TLV for the FIFO */
854 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
855 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
857 fifo_hdr->fifo_num = cpu_to_le32(i);
858 fifo_hdr->available_bytes =
859 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
862 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
865 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
867 fifo_hdr->fence_ptr =
868 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
870 fifo_hdr->fence_mode =
871 cpu_to_le32(iwl_trans_read_prph(mvm->trans,
874 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
875 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
878 /* Dummy-read to advance the read pointer to the head */
879 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
882 fifo_len /= sizeof(u32); /* Size in DWORDS */
883 for (j = 0; j < fifo_len; j++)
884 fifo_data[j] = iwl_trans_read_prph(mvm->trans,
885 TXF_READ_MODIFY_DATA);
886 *dump_data = iwl_fw_error_next_data(*dump_data);
889 iwl_trans_release_nic_access(mvm->trans, &flags);
892 void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
894 if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert ||
898 kfree(mvm->fw_dump_desc);
899 mvm->fw_dump_desc = NULL;
902 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
904 struct iwl_fw_error_dump_file *dump_file;
905 struct iwl_fw_error_dump_data *dump_data;
906 struct iwl_fw_error_dump_info *dump_info;
907 struct iwl_fw_error_dump_mem *dump_mem;
908 struct iwl_fw_error_dump_trigger_desc *dump_trig;
909 struct iwl_mvm_dump_ptrs *fw_error_dump;
910 u32 sram_len, sram_ofs;
911 u32 file_len, fifo_data_len = 0;
912 u32 smem_len = mvm->cfg->smem_len;
913 u32 sram2_len = mvm->cfg->dccm2_len;
915 lockdep_assert_held(&mvm->mutex);
917 /* W/A for 8000 HW family A-step */
918 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
919 CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_A_STEP) {
927 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
931 /* SRAM - include stack CCM if driver knows the values for it */
932 if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
933 const struct fw_img *img;
935 img = &mvm->fw->img[mvm->cur_ucode];
936 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
937 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
939 sram_ofs = mvm->cfg->dccm_offset;
940 sram_len = mvm->cfg->dccm_len;
943 /* reading RXF/TXF sizes */
944 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
945 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
951 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
952 if (!mem_cfg->rxfifo_size[i])
955 /* Add header info */
956 fifo_data_len += mem_cfg->rxfifo_size[i] +
958 sizeof(struct iwl_fw_error_dump_fifo);
961 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
962 if (!mem_cfg->txfifo_size[i])
965 /* Add header info */
966 fifo_data_len += mem_cfg->txfifo_size[i] +
968 sizeof(struct iwl_fw_error_dump_fifo);
972 file_len = sizeof(*dump_file) +
973 sizeof(*dump_data) * 2 +
974 sram_len + sizeof(*dump_mem) +
978 if (mvm->fw_dump_desc)
979 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
980 mvm->fw_dump_desc->len;
982 /* Make room for the SMEM, if it exists */
984 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
986 /* Make room for the secondary SRAM, if it exists */
988 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
990 dump_file = vzalloc(file_len);
992 kfree(fw_error_dump);
993 iwl_mvm_free_fw_dump_desc(mvm);
997 fw_error_dump->op_mode_ptr = dump_file;
999 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
1000 dump_data = (void *)dump_file->data;
1002 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
1003 dump_data->len = cpu_to_le32(sizeof(*dump_info));
1004 dump_info = (void *) dump_data->data;
1005 dump_info->device_family =
1006 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
1007 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
1008 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
1009 dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
1010 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
1011 sizeof(dump_info->fw_human_readable));
1012 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1013 sizeof(dump_info->dev_human_readable));
1014 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1015 sizeof(dump_info->bus_human_readable));
1017 dump_data = iwl_fw_error_next_data(dump_data);
1018 /* We only dump the FIFOs if the FW is in error state */
1019 if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1020 iwl_mvm_dump_fifos(mvm, &dump_data);
1022 if (mvm->fw_dump_desc) {
1023 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
1024 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
1025 mvm->fw_dump_desc->len);
1026 dump_trig = (void *)dump_data->data;
1027 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
1028 sizeof(*dump_trig) + mvm->fw_dump_desc->len);
1030 /* now we can free this copy */
1031 iwl_mvm_free_fw_dump_desc(mvm);
1032 dump_data = iwl_fw_error_next_data(dump_data);
1035 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1036 dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1037 dump_mem = (void *)dump_data->data;
1038 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1039 dump_mem->offset = cpu_to_le32(sram_ofs);
1040 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
1044 dump_data = iwl_fw_error_next_data(dump_data);
1045 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1046 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1047 dump_mem = (void *)dump_data->data;
1048 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1049 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
1050 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
1051 dump_mem->data, smem_len);
1055 dump_data = iwl_fw_error_next_data(dump_data);
1056 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1057 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1058 dump_mem = (void *)dump_data->data;
1059 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1060 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1061 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1062 dump_mem->data, sram2_len);
1065 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
1066 fw_error_dump->op_mode_len = file_len;
1067 if (fw_error_dump->trans_ptr)
1068 file_len += fw_error_dump->trans_ptr->len;
1069 dump_file->file_len = cpu_to_le32(file_len);
1071 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1072 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
1074 clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
1077 struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
1079 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
1083 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1085 /* clear the D3 reconfig, we only need it to avoid dumping a
1086 * firmware coredump on reconfiguration, we shouldn't do that
1087 * on D3->D0 transition
1089 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1090 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1091 iwl_mvm_fw_error_dump(mvm);
1094 /* cleanup all stale references (scan, roc), but keep the
1095 * ucode_down ref until reconfig is complete
1097 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1099 iwl_trans_stop_device(mvm->trans);
1101 mvm->scan_status = IWL_MVM_SCAN_NONE;
1102 mvm->ps_disabled = false;
1103 mvm->calibrating = false;
1105 /* just in case one was running */
1106 ieee80211_remain_on_channel_expired(mvm->hw);
1108 ieee80211_iterate_active_interfaces_atomic(
1109 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1110 iwl_mvm_cleanup_iterator, mvm);
1112 mvm->p2p_device_vif = NULL;
1113 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1115 iwl_mvm_reset_phy_ctxts(mvm);
1116 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1117 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1118 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1119 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1120 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1121 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1122 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1123 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1124 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1126 ieee80211_wake_queues(mvm->hw);
1128 /* clear any stale d0i3 state */
1129 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1132 mvm->rx_ba_sessions = 0;
1133 mvm->fw_dbg_conf = FW_DBG_INVALID;
1135 /* keep statistics ticking */
1136 iwl_mvm_accu_radio_stats(mvm);
1139 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1143 lockdep_assert_held(&mvm->mutex);
1145 /* Clean up some internal and mac80211 state on restart */
1146 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1147 iwl_mvm_restart_cleanup(mvm);
1149 ret = iwl_mvm_up(mvm);
1151 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1152 /* Something went wrong - we need to finish some cleanup
1153 * that normally iwl_mvm_mac_restart_complete() below
1156 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1157 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1163 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1165 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1168 /* Some hw restart cleanups must not hold the mutex */
1169 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1171 * Make sure we are out of d0i3. This is needed
1172 * to make sure the reference accounting is correct
1173 * (and there is no stale d0i3_exit_work).
1175 wait_event_timeout(mvm->d0i3_exit_waitq,
1176 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1181 mutex_lock(&mvm->mutex);
1182 ret = __iwl_mvm_mac_start(mvm);
1183 mutex_unlock(&mvm->mutex);
1188 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1192 mutex_lock(&mvm->mutex);
1194 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1195 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1196 ret = iwl_mvm_update_quotas(mvm, NULL);
1198 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1201 /* allow transport/FW low power modes */
1202 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1205 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1206 * of packets the FW sent out, so we must reconnect.
1208 iwl_mvm_teardown_tdls_peers(mvm);
1210 mutex_unlock(&mvm->mutex);
1213 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1217 if (!iwl_mvm_is_d0i3_supported(mvm))
1220 mutex_lock(&mvm->d0i3_suspend_mutex);
1221 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1222 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1223 &mvm->d0i3_suspend_flags);
1224 mutex_unlock(&mvm->d0i3_suspend_mutex);
1227 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1228 _iwl_mvm_exit_d0i3(mvm);
1231 if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1232 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1233 !test_bit(IWL_MVM_STATUS_IN_D0I3,
1236 WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1240 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1241 enum ieee80211_reconfig_type reconfig_type)
1243 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1245 switch (reconfig_type) {
1246 case IEEE80211_RECONFIG_TYPE_RESTART:
1247 iwl_mvm_restart_complete(mvm);
1249 case IEEE80211_RECONFIG_TYPE_SUSPEND:
1250 iwl_mvm_resume_complete(mvm);
1255 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1257 lockdep_assert_held(&mvm->mutex);
1259 /* firmware counters are obviously reset now, but we shouldn't
1260 * partially track so also clear the fw_reset_accu counters.
1262 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1265 * Disallow low power states when the FW is down by taking
1266 * the UCODE_DOWN ref. in case of ongoing hw restart the
1267 * ref is already taken, so don't take it again.
1269 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1270 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1272 /* async_handlers_wk is now blocked */
1275 * The work item could be running or queued if the
1276 * ROC time event stops just as we get here.
1278 cancel_work_sync(&mvm->roc_done_wk);
1280 iwl_trans_stop_device(mvm->trans);
1282 iwl_mvm_async_handlers_purge(mvm);
1283 /* async_handlers_list is empty and will stay empty: HW is stopped */
1285 /* the fw is stopped, the aux sta is dead: clean up driver state */
1286 iwl_mvm_del_aux_sta(mvm);
1289 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1290 * won't be called in this case).
1292 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1294 mvm->ucode_loaded = false;
1297 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1299 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1301 flush_work(&mvm->d0i3_exit_work);
1302 flush_work(&mvm->async_handlers_wk);
1303 cancel_delayed_work_sync(&mvm->fw_dump_wk);
1304 iwl_mvm_free_fw_dump_desc(mvm);
1306 mutex_lock(&mvm->mutex);
1307 __iwl_mvm_mac_stop(mvm);
1308 mutex_unlock(&mvm->mutex);
1311 * The worker might have been waiting for the mutex, let it run and
1312 * discover that its list is now empty.
1314 cancel_work_sync(&mvm->async_handlers_wk);
1317 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1321 lockdep_assert_held(&mvm->mutex);
1323 for (i = 0; i < NUM_PHY_CTX; i++)
1324 if (!mvm->phy_ctxts[i].ref)
1325 return &mvm->phy_ctxts[i];
1327 IWL_ERR(mvm, "No available PHY context\n");
1331 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1334 /* FW is in charge of regulatory enforcement */
1335 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1336 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1337 .pwr_restriction = cpu_to_le16(tx_power),
1340 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1341 sizeof(reduce_txpwr_cmd),
1345 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1346 struct ieee80211_vif *vif)
1348 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1349 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1355 * make sure D0i3 exit is completed, otherwise a target access
1356 * during tx queue configuration could be done when still in
1359 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1364 * Not much to do here. The stack will not allow interface
1365 * types or combinations that we didn't advertise, so we
1366 * don't really have to check the types.
1369 mutex_lock(&mvm->mutex);
1371 /* make sure that beacon statistics don't go backwards with FW reset */
1372 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1373 mvmvif->beacon_stats.accu_num_beacons +=
1374 mvmvif->beacon_stats.num_beacons;
1376 /* Allocate resources for the MAC context, and add it to the fw */
1377 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1381 /* Counting number of interfaces is needed for legacy PM */
1382 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1386 * The AP binding flow can be done only after the beacon
1387 * template is configured (which happens only in the mac80211
1388 * start_ap() flow), and adding the broadcast station can happen
1389 * only after the binding.
1390 * In addition, since modifying the MAC before adding a bcast
1391 * station is not allowed by the FW, delay the adding of MAC context to
1392 * the point where we can also add the bcast station.
1393 * In short: there's not much we can do at this point, other than
1394 * allocating resources :)
1396 if (vif->type == NL80211_IFTYPE_AP ||
1397 vif->type == NL80211_IFTYPE_ADHOC) {
1398 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1400 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1404 iwl_mvm_vif_dbgfs_register(mvm, vif);
1408 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1412 ret = iwl_mvm_power_update_mac(mvm);
1414 goto out_remove_mac;
1416 /* beacon filtering */
1417 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1419 goto out_remove_mac;
1421 if (!mvm->bf_allowed_vif &&
1422 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1423 mvm->bf_allowed_vif = mvmvif;
1424 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1425 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1429 * P2P_DEVICE interface does not have a channel context assigned to it,
1430 * so a dedicated PHY context is allocated to it and the corresponding
1431 * MAC context is bound to it at this stage.
1433 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1435 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1436 if (!mvmvif->phy_ctxt) {
1441 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1442 ret = iwl_mvm_binding_add_vif(mvm, vif);
1446 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1450 /* Save a pointer to p2p device vif, so it can later be used to
1451 * update the p2p device MAC when a GO is started/stopped */
1452 mvm->p2p_device_vif = vif;
1455 iwl_mvm_vif_dbgfs_register(mvm, vif);
1459 iwl_mvm_binding_remove_vif(mvm, vif);
1461 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1463 if (mvm->bf_allowed_vif == mvmvif) {
1464 mvm->bf_allowed_vif = NULL;
1465 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1466 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1469 mvmvif->phy_ctxt = NULL;
1470 iwl_mvm_mac_ctxt_remove(mvm, vif);
1472 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1475 iwl_mvm_mac_ctxt_release(mvm, vif);
1477 mutex_unlock(&mvm->mutex);
1479 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1484 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1485 struct ieee80211_vif *vif)
1487 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1490 mutex_lock(&mvm->mutex);
1491 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1492 mutex_unlock(&mvm->mutex);
1495 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1497 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1498 * We assume here that all the packets sent to the OFFCHANNEL
1499 * queue are sent in ROC session.
1501 flush_work(&mvm->roc_done_wk);
1504 * By now, all the AC queues are empty. The AGG queues are
1505 * empty too. We already got all the Tx responses for all the
1506 * packets in the queues. The drain work can have been
1507 * triggered. Flush it.
1509 flush_work(&mvm->sta_drained_wk);
1513 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1514 struct ieee80211_vif *vif)
1516 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1517 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1519 iwl_mvm_prepare_mac_removal(mvm, vif);
1521 mutex_lock(&mvm->mutex);
1523 if (mvm->bf_allowed_vif == mvmvif) {
1524 mvm->bf_allowed_vif = NULL;
1525 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1526 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1529 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1532 * For AP/GO interface, the tear down of the resources allocated to the
1533 * interface is be handled as part of the stop_ap flow.
1535 if (vif->type == NL80211_IFTYPE_AP ||
1536 vif->type == NL80211_IFTYPE_ADHOC) {
1537 #ifdef CONFIG_NL80211_TESTMODE
1538 if (vif == mvm->noa_vif) {
1539 mvm->noa_vif = NULL;
1540 mvm->noa_duration = 0;
1543 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1547 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1548 mvm->p2p_device_vif = NULL;
1549 iwl_mvm_rm_bcast_sta(mvm, vif);
1550 iwl_mvm_binding_remove_vif(mvm, vif);
1551 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1552 mvmvif->phy_ctxt = NULL;
1555 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1558 iwl_mvm_power_update_mac(mvm);
1559 iwl_mvm_mac_ctxt_remove(mvm, vif);
1562 iwl_mvm_mac_ctxt_release(mvm, vif);
1563 mutex_unlock(&mvm->mutex);
1566 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1571 struct iwl_mvm_mc_iter_data {
1572 struct iwl_mvm *mvm;
1576 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1577 struct ieee80211_vif *vif)
1579 struct iwl_mvm_mc_iter_data *data = _data;
1580 struct iwl_mvm *mvm = data->mvm;
1581 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1584 /* if we don't have free ports, mcast frames will be dropped */
1585 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1588 if (vif->type != NL80211_IFTYPE_STATION ||
1589 !vif->bss_conf.assoc)
1592 cmd->port_id = data->port_id++;
1593 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1594 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1596 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1598 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1601 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1603 struct iwl_mvm_mc_iter_data iter_data = {
1607 lockdep_assert_held(&mvm->mutex);
1609 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1612 ieee80211_iterate_active_interfaces_atomic(
1613 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1614 iwl_mvm_mc_iface_iterator, &iter_data);
1617 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1618 struct netdev_hw_addr_list *mc_list)
1620 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1621 struct iwl_mcast_filter_cmd *cmd;
1622 struct netdev_hw_addr *addr;
1627 addr_count = netdev_hw_addr_list_count(mc_list);
1628 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1629 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1633 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1634 cmd = kzalloc(len, GFP_ATOMIC);
1640 return (u64)(unsigned long)cmd;
1643 netdev_hw_addr_list_for_each(addr, mc_list) {
1644 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1645 cmd->count, addr->addr);
1646 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1647 addr->addr, ETH_ALEN);
1651 return (u64)(unsigned long)cmd;
1654 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1655 unsigned int changed_flags,
1656 unsigned int *total_flags,
1659 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1660 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1662 mutex_lock(&mvm->mutex);
1664 /* replace previous configuration */
1665 kfree(mvm->mcast_filter_cmd);
1666 mvm->mcast_filter_cmd = cmd;
1671 iwl_mvm_recalc_multicast(mvm);
1673 mutex_unlock(&mvm->mutex);
1677 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1678 struct iwl_bcast_iter_data {
1679 struct iwl_mvm *mvm;
1680 struct iwl_bcast_filter_cmd *cmd;
1685 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1686 const struct iwl_fw_bcast_filter *in_filter,
1687 struct iwl_fw_bcast_filter *out_filter)
1689 struct iwl_fw_bcast_filter_attr *attr;
1692 memcpy(out_filter, in_filter, sizeof(*out_filter));
1694 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1695 attr = &out_filter->attrs[i];
1700 switch (attr->reserved1) {
1701 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1702 if (vif->bss_conf.arp_addr_cnt != 1) {
1707 attr->val = vif->bss_conf.arp_addr_list[0];
1709 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1710 attr->val = *(__be32 *)&vif->addr[2];
1715 attr->reserved1 = 0;
1716 out_filter->num_attrs++;
1720 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1721 struct ieee80211_vif *vif)
1723 struct iwl_bcast_iter_data *data = _data;
1724 struct iwl_mvm *mvm = data->mvm;
1725 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1726 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1727 struct iwl_fw_bcast_mac *bcast_mac;
1730 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1733 bcast_mac = &cmd->macs[mvmvif->id];
1736 * enable filtering only for associated stations, but not for P2P
1739 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1740 !vif->bss_conf.assoc)
1743 bcast_mac->default_discard = 1;
1745 /* copy all configured filters */
1746 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1748 * Make sure we don't exceed our filters limit.
1749 * if there is still a valid filter to be configured,
1750 * be on the safe side and just allow bcast for this mac.
1752 if (WARN_ON_ONCE(data->current_filter >=
1753 ARRAY_SIZE(cmd->filters))) {
1754 bcast_mac->default_discard = 0;
1755 bcast_mac->attached_filters = 0;
1759 iwl_mvm_set_bcast_filter(vif,
1760 &mvm->bcast_filters[i],
1761 &cmd->filters[data->current_filter]);
1763 /* skip current filter if it contains no attributes */
1764 if (!cmd->filters[data->current_filter].num_attrs)
1767 /* attach the filter to current mac */
1768 bcast_mac->attached_filters |=
1769 cpu_to_le16(BIT(data->current_filter));
1771 data->current_filter++;
1775 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1776 struct iwl_bcast_filter_cmd *cmd)
1778 struct iwl_bcast_iter_data iter_data = {
1783 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1786 memset(cmd, 0, sizeof(*cmd));
1787 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1788 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1790 #ifdef CONFIG_IWLWIFI_DEBUGFS
1791 /* use debugfs filters/macs if override is configured */
1792 if (mvm->dbgfs_bcast_filtering.override) {
1793 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1794 sizeof(cmd->filters));
1795 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1801 /* if no filters are configured, do nothing */
1802 if (!mvm->bcast_filters)
1805 /* configure and attach these filters for each associated sta vif */
1806 ieee80211_iterate_active_interfaces(
1807 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1808 iwl_mvm_bcast_filter_iterator, &iter_data);
1812 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1813 struct ieee80211_vif *vif)
1815 struct iwl_bcast_filter_cmd cmd;
1817 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1820 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1823 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1827 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1828 struct ieee80211_vif *vif)
1834 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1835 struct ieee80211_vif *vif,
1836 struct ieee80211_bss_conf *bss_conf,
1839 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1843 * Re-calculate the tsf id, as the master-slave relations depend on the
1844 * beacon interval, which was not known when the station interface was
1847 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1848 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1851 * If we're not associated yet, take the (new) BSSID before associating
1852 * so the firmware knows. If we're already associated, then use the old
1853 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1854 * branch for disassociation below.
1856 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1857 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1859 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1861 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1863 /* after sending it once, adopt mac80211 data */
1864 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1865 mvmvif->associated = bss_conf->assoc;
1867 if (changes & BSS_CHANGED_ASSOC) {
1868 if (bss_conf->assoc) {
1869 /* clear statistics to get clean beacon counter */
1870 iwl_mvm_request_statistics(mvm, true);
1871 memset(&mvmvif->beacon_stats, 0,
1872 sizeof(mvmvif->beacon_stats));
1874 /* add quota for this interface */
1875 ret = iwl_mvm_update_quotas(mvm, NULL);
1877 IWL_ERR(mvm, "failed to update quotas\n");
1881 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1884 * If we're restarting then the firmware will
1885 * obviously have lost synchronisation with
1886 * the AP. It will attempt to synchronise by
1887 * itself, but we can make it more reliable by
1888 * scheduling a session protection time event.
1890 * The firmware needs to receive a beacon to
1891 * catch up with synchronisation, use 110% of
1892 * the beacon interval.
1894 * Set a large maximum delay to allow for more
1895 * than a single interface.
1897 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1898 iwl_mvm_protect_session(mvm, vif, dur, dur,
1902 iwl_mvm_sf_update(mvm, vif, false);
1903 iwl_mvm_power_vif_assoc(mvm, vif);
1905 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1906 iwl_mvm_update_smps(mvm, vif,
1907 IWL_MVM_SMPS_REQ_PROT,
1908 IEEE80211_SMPS_DYNAMIC);
1910 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1912 * If update fails - SF might be running in associated
1913 * mode while disassociated - which is forbidden.
1915 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1916 "Failed to update SF upon disassociation\n");
1918 /* remove AP station now that the MAC is unassoc */
1919 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1921 IWL_ERR(mvm, "failed to remove AP station\n");
1923 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1924 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1925 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1926 /* remove quota for this interface */
1927 ret = iwl_mvm_update_quotas(mvm, NULL);
1929 IWL_ERR(mvm, "failed to update quotas\n");
1932 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1934 /* this will take the cleared BSSID from bss_conf */
1935 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1938 "failed to update MAC %pM (clear after unassoc)\n",
1942 iwl_mvm_recalc_multicast(mvm);
1943 iwl_mvm_configure_bcast_filter(mvm, vif);
1945 /* reset rssi values */
1946 mvmvif->bf_data.ave_beacon_signal = 0;
1948 iwl_mvm_bt_coex_vif_change(mvm);
1949 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1950 IEEE80211_SMPS_AUTOMATIC);
1951 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1953 * We received a beacon _after_ association so
1954 * remove the session protection.
1956 iwl_mvm_remove_time_event(mvm, mvmvif,
1957 &mvmvif->time_event_data);
1960 if (changes & BSS_CHANGED_BEACON_INFO) {
1961 iwl_mvm_sf_update(mvm, vif, false);
1962 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1965 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1966 ret = iwl_mvm_power_update_mac(mvm);
1968 IWL_ERR(mvm, "failed to update power mode\n");
1971 if (changes & BSS_CHANGED_TXPOWER) {
1972 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1974 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1977 if (changes & BSS_CHANGED_CQM) {
1978 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1979 /* reset cqm events tracking */
1980 mvmvif->bf_data.last_cqm_event = 0;
1981 if (mvmvif->bf_data.bf_enabled) {
1982 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1985 "failed to update CQM thresholds\n");
1989 if (changes & BSS_CHANGED_ARP_FILTER) {
1990 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1991 iwl_mvm_configure_bcast_filter(mvm, vif);
1995 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1996 struct ieee80211_vif *vif)
1998 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1999 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2003 * iwl_mvm_mac_ctxt_add() might read directly from the device
2004 * (the system time), so make sure it is available.
2006 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2010 mutex_lock(&mvm->mutex);
2012 /* Send the beacon template */
2013 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2018 * Re-calculate the tsf id, as the master-slave relations depend on the
2019 * beacon interval, which was not known when the AP interface was added.
2021 if (vif->type == NL80211_IFTYPE_AP)
2022 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2024 /* Add the mac context */
2025 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2029 /* Perform the binding */
2030 ret = iwl_mvm_binding_add_vif(mvm, vif);
2034 /* Send the bcast station. At this stage the TBTT and DTIM time events
2035 * are added and applied to the scheduler */
2036 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2040 /* must be set before quota calculations */
2041 mvmvif->ap_ibss_active = true;
2043 /* power updated needs to be done before quotas */
2044 iwl_mvm_power_update_mac(mvm);
2046 ret = iwl_mvm_update_quotas(mvm, NULL);
2048 goto out_quota_failed;
2050 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2051 if (vif->p2p && mvm->p2p_device_vif)
2052 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2054 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2056 iwl_mvm_bt_coex_vif_change(mvm);
2058 /* we don't support TDLS during DCM */
2059 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2060 iwl_mvm_teardown_tdls_peers(mvm);
2062 mutex_unlock(&mvm->mutex);
2066 iwl_mvm_power_update_mac(mvm);
2067 mvmvif->ap_ibss_active = false;
2068 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2070 iwl_mvm_binding_remove_vif(mvm, vif);
2072 iwl_mvm_mac_ctxt_remove(mvm, vif);
2074 mutex_unlock(&mvm->mutex);
2075 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2079 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2080 struct ieee80211_vif *vif)
2082 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2083 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2085 iwl_mvm_prepare_mac_removal(mvm, vif);
2087 mutex_lock(&mvm->mutex);
2089 /* Handle AP stop while in CSA */
2090 if (rcu_access_pointer(mvm->csa_vif) == vif) {
2091 iwl_mvm_remove_time_event(mvm, mvmvif,
2092 &mvmvif->time_event_data);
2093 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2096 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2097 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2098 mvm->csa_tx_block_bcn_timeout = 0;
2101 mvmvif->ap_ibss_active = false;
2102 mvm->ap_last_beacon_gp2 = 0;
2104 iwl_mvm_bt_coex_vif_change(mvm);
2106 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2108 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2109 if (vif->p2p && mvm->p2p_device_vif)
2110 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2112 iwl_mvm_update_quotas(mvm, NULL);
2113 iwl_mvm_send_rm_bcast_sta(mvm, vif);
2114 iwl_mvm_binding_remove_vif(mvm, vif);
2116 iwl_mvm_power_update_mac(mvm);
2118 iwl_mvm_mac_ctxt_remove(mvm, vif);
2120 mutex_unlock(&mvm->mutex);
2124 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2125 struct ieee80211_vif *vif,
2126 struct ieee80211_bss_conf *bss_conf,
2129 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2131 /* Changes will be applied when the AP/IBSS is started */
2132 if (!mvmvif->ap_ibss_active)
2135 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2136 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2137 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2138 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2140 /* Need to send a new beacon template to the FW */
2141 if (changes & BSS_CHANGED_BEACON &&
2142 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2143 IWL_WARN(mvm, "Failed updating beacon data\n");
2145 if (changes & BSS_CHANGED_TXPOWER) {
2146 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2148 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2153 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2154 struct ieee80211_vif *vif,
2155 struct ieee80211_bss_conf *bss_conf,
2158 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2161 * iwl_mvm_bss_info_changed_station() might call
2162 * iwl_mvm_protect_session(), which reads directly from
2163 * the device (the system time), so make sure it is available.
2165 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2168 mutex_lock(&mvm->mutex);
2170 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2171 iwl_mvm_scan_offload_stop(mvm, true);
2173 switch (vif->type) {
2174 case NL80211_IFTYPE_STATION:
2175 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2177 case NL80211_IFTYPE_AP:
2178 case NL80211_IFTYPE_ADHOC:
2179 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2182 /* shouldn't happen */
2186 mutex_unlock(&mvm->mutex);
2187 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2190 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
2191 enum iwl_scan_status scan_type)
2194 bool wait_for_handlers = false;
2196 mutex_lock(&mvm->mutex);
2198 if (mvm->scan_status != scan_type) {
2200 /* make sure there are no pending notifications */
2201 wait_for_handlers = true;
2205 switch (scan_type) {
2206 case IWL_MVM_SCAN_SCHED:
2207 ret = iwl_mvm_scan_offload_stop(mvm, true);
2209 case IWL_MVM_SCAN_OS:
2210 ret = iwl_mvm_cancel_scan(mvm);
2212 case IWL_MVM_SCAN_NONE:
2221 wait_for_handlers = true;
2223 mutex_unlock(&mvm->mutex);
2225 /* make sure we consume the completion notification */
2226 if (wait_for_handlers)
2227 iwl_mvm_wait_for_async_handlers(mvm);
2231 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2232 struct ieee80211_vif *vif,
2233 struct ieee80211_scan_request *hw_req)
2235 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2236 struct cfg80211_scan_request *req = &hw_req->req;
2239 if (req->n_channels == 0 ||
2240 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
2243 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2244 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
2249 mutex_lock(&mvm->mutex);
2251 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2256 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
2258 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
2259 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
2261 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
2264 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
2266 mutex_unlock(&mvm->mutex);
2270 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2271 struct ieee80211_vif *vif)
2273 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2275 mutex_lock(&mvm->mutex);
2277 /* Due to a race condition, it's possible that mac80211 asks
2278 * us to stop a hw_scan when it's already stopped. This can
2279 * happen, for instance, if we stopped the scan ourselves,
2280 * called ieee80211_scan_completed() and the userspace called
2281 * cancel scan scan before ieee80211_scan_work() could run.
2282 * To handle that, simply return if the scan is not running.
2284 /* FIXME: for now, we ignore this race for UMAC scans, since
2285 * they don't set the scan_status.
2287 if ((mvm->scan_status == IWL_MVM_SCAN_OS) ||
2288 (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2289 iwl_mvm_cancel_scan(mvm);
2291 mutex_unlock(&mvm->mutex);
2295 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2296 struct ieee80211_sta *sta, u16 tids,
2298 enum ieee80211_frame_release_type reason,
2301 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2303 /* Called when we need to transmit (a) frame(s) from mac80211 */
2305 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2306 tids, more_data, false);
2310 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2311 struct ieee80211_sta *sta, u16 tids,
2313 enum ieee80211_frame_release_type reason,
2316 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2318 /* Called when we need to transmit (a) frame(s) from agg queue */
2320 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2321 tids, more_data, true);
2324 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2325 struct ieee80211_vif *vif,
2326 enum sta_notify_cmd cmd,
2327 struct ieee80211_sta *sta)
2329 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2330 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2334 case STA_NOTIFY_SLEEP:
2335 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2336 ieee80211_sta_block_awake(hw, sta, true);
2337 spin_lock_bh(&mvmsta->lock);
2338 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2339 struct iwl_mvm_tid_data *tid_data;
2341 tid_data = &mvmsta->tid_data[tid];
2342 if (tid_data->state != IWL_AGG_ON &&
2343 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2345 if (iwl_mvm_tid_queued(tid_data) == 0)
2347 ieee80211_sta_set_buffered(sta, tid, true);
2349 spin_unlock_bh(&mvmsta->lock);
2351 * The fw updates the STA to be asleep. Tx packets on the Tx
2352 * queues to this station will not be transmitted. The fw will
2353 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2356 case STA_NOTIFY_AWAKE:
2357 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2359 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2366 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2367 struct ieee80211_vif *vif,
2368 struct ieee80211_sta *sta)
2370 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2371 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2374 * This is called before mac80211 does RCU synchronisation,
2375 * so here we already invalidate our internal RCU-protected
2376 * station pointer. The rest of the code will thus no longer
2377 * be able to find the station this way, and we don't rely
2378 * on further RCU synchronisation after the sta_state()
2379 * callback deleted the station.
2381 mutex_lock(&mvm->mutex);
2382 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2383 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2385 mutex_unlock(&mvm->mutex);
2388 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2391 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2394 if (iwlwifi_mod_params.uapsd_disable) {
2395 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2399 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2402 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2403 struct ieee80211_vif *vif,
2404 struct ieee80211_sta *sta,
2405 enum ieee80211_sta_state old_state,
2406 enum ieee80211_sta_state new_state)
2408 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2409 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2412 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2413 sta->addr, old_state, new_state);
2415 /* this would be a mac80211 bug ... but don't crash */
2416 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2419 /* if a STA is being removed, reuse its ID */
2420 flush_work(&mvm->sta_drained_wk);
2422 mutex_lock(&mvm->mutex);
2423 if (old_state == IEEE80211_STA_NOTEXIST &&
2424 new_state == IEEE80211_STA_NONE) {
2426 * Firmware bug - it'll crash if the beacon interval is less
2427 * than 16. We can't avoid connecting at all, so refuse the
2428 * station state change, this will cause mac80211 to abandon
2429 * attempts to connect to this AP, and eventually wpa_s will
2430 * blacklist the AP...
2432 if (vif->type == NL80211_IFTYPE_STATION &&
2433 vif->bss_conf.beacon_int < 16) {
2435 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2436 sta->addr, vif->bss_conf.beacon_int);
2443 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2444 IWL_MVM_TDLS_STA_COUNT ||
2445 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2446 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2451 ret = iwl_mvm_add_sta(mvm, vif, sta);
2452 if (sta->tdls && ret == 0)
2453 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2454 } else if (old_state == IEEE80211_STA_NONE &&
2455 new_state == IEEE80211_STA_AUTH) {
2457 * EBS may be disabled due to previous failures reported by FW.
2458 * Reset EBS status here assuming environment has been changed.
2460 mvm->last_ebs_successful = true;
2461 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2463 } else if (old_state == IEEE80211_STA_AUTH &&
2464 new_state == IEEE80211_STA_ASSOC) {
2465 ret = iwl_mvm_update_sta(mvm, vif, sta);
2467 iwl_mvm_rs_rate_init(mvm, sta,
2468 mvmvif->phy_ctxt->channel->band,
2470 } else if (old_state == IEEE80211_STA_ASSOC &&
2471 new_state == IEEE80211_STA_AUTHORIZED) {
2473 /* we don't support TDLS during DCM */
2474 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2475 iwl_mvm_teardown_tdls_peers(mvm);
2477 /* enable beacon filtering */
2478 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2480 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2481 new_state == IEEE80211_STA_ASSOC) {
2482 /* disable beacon filtering */
2483 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2485 } else if (old_state == IEEE80211_STA_ASSOC &&
2486 new_state == IEEE80211_STA_AUTH) {
2488 } else if (old_state == IEEE80211_STA_AUTH &&
2489 new_state == IEEE80211_STA_NONE) {
2491 } else if (old_state == IEEE80211_STA_NONE &&
2492 new_state == IEEE80211_STA_NOTEXIST) {
2493 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2495 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2500 mutex_unlock(&mvm->mutex);
2502 if (sta->tdls && ret == 0) {
2503 if (old_state == IEEE80211_STA_NOTEXIST &&
2504 new_state == IEEE80211_STA_NONE)
2505 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2506 else if (old_state == IEEE80211_STA_NONE &&
2507 new_state == IEEE80211_STA_NOTEXIST)
2508 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2514 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2516 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2518 mvm->rts_threshold = value;
2523 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2524 struct ieee80211_vif *vif,
2525 struct ieee80211_sta *sta, u32 changed)
2527 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2529 if (vif->type == NL80211_IFTYPE_STATION &&
2530 changed & IEEE80211_RC_NSS_CHANGED)
2531 iwl_mvm_sf_update(mvm, vif, false);
2534 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2535 struct ieee80211_vif *vif, u16 ac,
2536 const struct ieee80211_tx_queue_params *params)
2538 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2539 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2541 mvmvif->queue_params[ac] = *params;
2544 * No need to update right away, we'll get BSS_CHANGED_QOS
2545 * The exception is P2P_DEVICE interface which needs immediate update.
2547 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2550 mutex_lock(&mvm->mutex);
2551 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2552 mutex_unlock(&mvm->mutex);
2558 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2559 struct ieee80211_vif *vif)
2561 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2562 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2563 200 + vif->bss_conf.beacon_int);
2564 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2565 100 + vif->bss_conf.beacon_int);
2567 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2571 * iwl_mvm_protect_session() reads directly from the device
2572 * (the system time), so make sure it is available.
2574 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2577 mutex_lock(&mvm->mutex);
2578 /* Try really hard to protect the session and hear a beacon */
2579 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2580 mutex_unlock(&mvm->mutex);
2582 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2585 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2586 struct ieee80211_vif *vif,
2587 struct cfg80211_sched_scan_request *req,
2588 struct ieee80211_scan_ies *ies)
2590 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2593 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2594 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2599 mutex_lock(&mvm->mutex);
2601 if (!vif->bss_conf.idle) {
2606 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2611 ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
2613 mvm->scan_status = IWL_MVM_SCAN_NONE;
2616 mutex_unlock(&mvm->mutex);
2620 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2621 struct ieee80211_vif *vif)
2623 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2626 mutex_lock(&mvm->mutex);
2628 /* Due to a race condition, it's possible that mac80211 asks
2629 * us to stop a sched_scan when it's already stopped. This
2630 * can happen, for instance, if we stopped the scan ourselves,
2631 * called ieee80211_sched_scan_stopped() and the userspace called
2632 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2633 * could run. To handle this, simply return if the scan is
2636 /* FIXME: for now, we ignore this race for UMAC scans, since
2637 * they don't set the scan_status.
2639 if (mvm->scan_status != IWL_MVM_SCAN_SCHED &&
2640 !(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2641 mutex_unlock(&mvm->mutex);
2645 ret = iwl_mvm_scan_offload_stop(mvm, false);
2646 mutex_unlock(&mvm->mutex);
2647 iwl_mvm_wait_for_async_handlers(mvm);
2652 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2653 enum set_key_cmd cmd,
2654 struct ieee80211_vif *vif,
2655 struct ieee80211_sta *sta,
2656 struct ieee80211_key_conf *key)
2658 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2661 if (iwlwifi_mod_params.sw_crypto) {
2662 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2666 switch (key->cipher) {
2667 case WLAN_CIPHER_SUITE_TKIP:
2668 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2670 case WLAN_CIPHER_SUITE_CCMP:
2671 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2673 case WLAN_CIPHER_SUITE_AES_CMAC:
2674 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2676 case WLAN_CIPHER_SUITE_WEP40:
2677 case WLAN_CIPHER_SUITE_WEP104:
2678 /* For non-client mode, only use WEP keys for TX as we probably
2679 * don't have a station yet anyway and would then have to keep
2680 * track of the keys, linking them to each of the clients/peers
2681 * as they appear. For now, don't do that, for performance WEP
2682 * offload doesn't really matter much, but we need it for some
2683 * other offload features in client mode.
2685 if (vif->type != NL80211_IFTYPE_STATION)
2689 /* currently FW supports only one optional cipher scheme */
2690 if (hw->n_cipher_schemes &&
2691 hw->cipher_schemes->cipher == key->cipher)
2692 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2697 mutex_lock(&mvm->mutex);
2701 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2702 vif->type == NL80211_IFTYPE_AP) && !sta) {
2704 * GTK on AP interface is a TX-only key, return 0;
2705 * on IBSS they're per-station and because we're lazy
2706 * we don't support them for RX, so do the same.
2709 key->hw_key_idx = STA_KEY_IDX_INVALID;
2713 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2714 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2716 IWL_WARN(mvm, "set key failed\n");
2718 * can't add key for RX, but we don't need it
2719 * in the device for TX so still return 0
2721 key->hw_key_idx = STA_KEY_IDX_INVALID;
2727 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2732 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2733 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2739 mutex_unlock(&mvm->mutex);
2743 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2744 struct ieee80211_vif *vif,
2745 struct ieee80211_key_conf *keyconf,
2746 struct ieee80211_sta *sta,
2747 u32 iv32, u16 *phase1key)
2749 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2751 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2754 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2758 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2759 struct iwl_rx_packet *pkt, void *data)
2761 struct iwl_mvm *mvm =
2762 container_of(notif_wait, struct iwl_mvm, notif_wait);
2763 struct iwl_hs20_roc_res *resp;
2764 int resp_len = iwl_rx_packet_payload_len(pkt);
2765 struct iwl_mvm_time_event_data *te_data = data;
2767 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2770 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2771 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2775 resp = (void *)pkt->data;
2778 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2779 resp->status, resp->event_unique_id);
2781 te_data->uid = le32_to_cpu(resp->event_unique_id);
2782 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2785 spin_lock_bh(&mvm->time_event_lock);
2786 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2787 spin_unlock_bh(&mvm->time_event_lock);
2792 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2793 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2794 struct ieee80211_channel *channel,
2795 struct ieee80211_vif *vif,
2798 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2799 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2800 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2801 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2802 struct iwl_notification_wait wait_time_event;
2803 struct iwl_hs20_roc_req aux_roc_req = {
2804 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2806 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2807 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2808 /* Set the channel info data */
2809 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2810 PHY_BAND_24 : PHY_BAND_5,
2811 .channel_info.channel = channel->hw_value,
2812 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2813 /* Set the time and duration */
2814 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2815 .apply_time_max_delay =
2816 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2817 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2820 /* Set the node address */
2821 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2823 lockdep_assert_held(&mvm->mutex);
2825 spin_lock_bh(&mvm->time_event_lock);
2827 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2828 spin_unlock_bh(&mvm->time_event_lock);
2833 te_data->duration = duration;
2834 te_data->id = HOT_SPOT_CMD;
2836 spin_unlock_bh(&mvm->time_event_lock);
2839 * Use a notification wait, which really just processes the
2840 * command response and doesn't wait for anything, in order
2841 * to be able to process the response and get the UID inside
2842 * the RX path. Using CMD_WANT_SKB doesn't work because it
2843 * stores the buffer and then wakes up this thread, by which
2844 * time another notification (that the time event started)
2845 * might already be processed unsuccessfully.
2847 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2848 time_event_response,
2849 ARRAY_SIZE(time_event_response),
2850 iwl_mvm_rx_aux_roc, te_data);
2852 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2856 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2857 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2861 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2862 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2863 /* should never fail */
2868 spin_lock_bh(&mvm->time_event_lock);
2869 iwl_mvm_te_clear_data(mvm, te_data);
2870 spin_unlock_bh(&mvm->time_event_lock);
2876 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2877 struct ieee80211_vif *vif,
2878 struct ieee80211_channel *channel,
2880 enum ieee80211_roc_type type)
2882 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2883 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2884 struct cfg80211_chan_def chandef;
2885 struct iwl_mvm_phy_ctxt *phy_ctxt;
2888 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2891 mutex_lock(&mvm->mutex);
2893 switch (vif->type) {
2894 case NL80211_IFTYPE_STATION:
2895 if (mvm->fw->ucode_capa.capa[0] &
2896 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
2897 /* Use aux roc framework (HS20) */
2898 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2902 IWL_ERR(mvm, "hotspot not supported\n");
2905 case NL80211_IFTYPE_P2P_DEVICE:
2909 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2914 for (i = 0; i < NUM_PHY_CTX; i++) {
2915 phy_ctxt = &mvm->phy_ctxts[i];
2916 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2919 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2921 * Unbind the P2P_DEVICE from the current PHY context,
2922 * and if the PHY context is not used remove it.
2924 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2925 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2928 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2930 /* Bind the P2P_DEVICE to the current PHY Context */
2931 mvmvif->phy_ctxt = phy_ctxt;
2933 ret = iwl_mvm_binding_add_vif(mvm, vif);
2934 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2937 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2938 goto schedule_time_event;
2942 /* Need to update the PHY context only if the ROC channel changed */
2943 if (channel == mvmvif->phy_ctxt->channel)
2944 goto schedule_time_event;
2946 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2949 * Change the PHY context configuration as it is currently referenced
2950 * only by the P2P Device MAC
2952 if (mvmvif->phy_ctxt->ref == 1) {
2953 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2959 * The PHY context is shared with other MACs. Need to remove the
2960 * P2P Device from the binding, allocate an new PHY context and
2961 * create a new binding
2963 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2969 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2972 IWL_ERR(mvm, "Failed to change PHY context\n");
2976 /* Unbind the P2P_DEVICE from the current PHY context */
2977 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2978 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2981 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2983 /* Bind the P2P_DEVICE to the new allocated PHY context */
2984 mvmvif->phy_ctxt = phy_ctxt;
2986 ret = iwl_mvm_binding_add_vif(mvm, vif);
2987 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2990 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2993 schedule_time_event:
2994 /* Schedule the time events */
2995 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2998 mutex_unlock(&mvm->mutex);
2999 IWL_DEBUG_MAC80211(mvm, "leave\n");
3003 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3005 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3007 IWL_DEBUG_MAC80211(mvm, "enter\n");
3009 mutex_lock(&mvm->mutex);
3010 iwl_mvm_stop_roc(mvm);
3011 mutex_unlock(&mvm->mutex);
3013 IWL_DEBUG_MAC80211(mvm, "leave\n");
3017 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3018 struct ieee80211_chanctx_conf *ctx)
3020 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3021 struct iwl_mvm_phy_ctxt *phy_ctxt;
3024 lockdep_assert_held(&mvm->mutex);
3026 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3028 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3034 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3035 ctx->rx_chains_static,
3036 ctx->rx_chains_dynamic);
3038 IWL_ERR(mvm, "Failed to add PHY context\n");
3042 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3043 *phy_ctxt_id = phy_ctxt->id;
3048 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3049 struct ieee80211_chanctx_conf *ctx)
3051 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3054 mutex_lock(&mvm->mutex);
3055 ret = __iwl_mvm_add_chanctx(mvm, ctx);
3056 mutex_unlock(&mvm->mutex);
3061 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3062 struct ieee80211_chanctx_conf *ctx)
3064 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3065 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3067 lockdep_assert_held(&mvm->mutex);
3069 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3072 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3073 struct ieee80211_chanctx_conf *ctx)
3075 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3077 mutex_lock(&mvm->mutex);
3078 __iwl_mvm_remove_chanctx(mvm, ctx);
3079 mutex_unlock(&mvm->mutex);
3082 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3083 struct ieee80211_chanctx_conf *ctx,
3086 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3087 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3088 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3090 if (WARN_ONCE((phy_ctxt->ref > 1) &&
3091 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3092 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3093 IEEE80211_CHANCTX_CHANGE_RADAR |
3094 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3095 "Cannot change PHY. Ref=%d, changed=0x%X\n",
3096 phy_ctxt->ref, changed))
3099 mutex_lock(&mvm->mutex);
3100 iwl_mvm_bt_coex_vif_change(mvm);
3101 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3102 ctx->rx_chains_static,
3103 ctx->rx_chains_dynamic);
3104 mutex_unlock(&mvm->mutex);
3107 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3108 struct ieee80211_vif *vif,
3109 struct ieee80211_chanctx_conf *ctx,
3110 bool switching_chanctx)
3112 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3113 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3114 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3117 lockdep_assert_held(&mvm->mutex);
3119 mvmvif->phy_ctxt = phy_ctxt;
3121 switch (vif->type) {
3122 case NL80211_IFTYPE_AP:
3123 /* only needed if we're switching chanctx (i.e. during CSA) */
3124 if (switching_chanctx) {
3125 mvmvif->ap_ibss_active = true;
3128 case NL80211_IFTYPE_ADHOC:
3130 * The AP binding flow is handled as part of the start_ap flow
3131 * (in bss_info_changed), similarly for IBSS.
3135 case NL80211_IFTYPE_STATION:
3137 case NL80211_IFTYPE_MONITOR:
3138 /* always disable PS when a monitor interface is active */
3139 mvmvif->ps_disabled = true;
3146 ret = iwl_mvm_binding_add_vif(mvm, vif);
3151 * Power state must be updated before quotas,
3152 * otherwise fw will complain.
3154 iwl_mvm_power_update_mac(mvm);
3156 /* Setting the quota at this stage is only required for monitor
3157 * interfaces. For the other types, the bss_info changed flow
3158 * will handle quota settings.
3160 if (vif->type == NL80211_IFTYPE_MONITOR) {
3161 mvmvif->monitor_active = true;
3162 ret = iwl_mvm_update_quotas(mvm, NULL);
3164 goto out_remove_binding;
3167 /* Handle binding during CSA */
3168 if (vif->type == NL80211_IFTYPE_AP) {
3169 iwl_mvm_update_quotas(mvm, NULL);
3170 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3173 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3174 u32 duration = 2 * vif->bss_conf.beacon_int;
3176 /* iwl_mvm_protect_session() reads directly from the
3177 * device (the system time), so make sure it is
3180 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3182 goto out_remove_binding;
3184 /* Protect the session to make sure we hear the first
3185 * beacon on the new channel.
3187 iwl_mvm_protect_session(mvm, vif, duration, duration,
3188 vif->bss_conf.beacon_int / 2,
3191 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3193 iwl_mvm_update_quotas(mvm, NULL);
3199 iwl_mvm_binding_remove_vif(mvm, vif);
3200 iwl_mvm_power_update_mac(mvm);
3203 mvmvif->phy_ctxt = NULL;
3206 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3207 struct ieee80211_vif *vif,
3208 struct ieee80211_chanctx_conf *ctx)
3210 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3213 mutex_lock(&mvm->mutex);
3214 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3215 mutex_unlock(&mvm->mutex);
3220 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3221 struct ieee80211_vif *vif,
3222 struct ieee80211_chanctx_conf *ctx,
3223 bool switching_chanctx)
3225 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3226 struct ieee80211_vif *disabled_vif = NULL;
3228 lockdep_assert_held(&mvm->mutex);
3230 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3232 switch (vif->type) {
3233 case NL80211_IFTYPE_ADHOC:
3235 case NL80211_IFTYPE_MONITOR:
3236 mvmvif->monitor_active = false;
3237 mvmvif->ps_disabled = false;
3239 case NL80211_IFTYPE_AP:
3240 /* This part is triggered only during CSA */
3241 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3244 mvmvif->csa_countdown = false;
3246 /* Set CS bit on all the stations */
3247 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3249 /* Save blocked iface, the timeout is set on the next beacon */
3250 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3252 mvmvif->ap_ibss_active = false;
3254 case NL80211_IFTYPE_STATION:
3255 if (!switching_chanctx)
3260 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3266 iwl_mvm_update_quotas(mvm, disabled_vif);
3267 iwl_mvm_binding_remove_vif(mvm, vif);
3270 mvmvif->phy_ctxt = NULL;
3271 iwl_mvm_power_update_mac(mvm);
3274 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3275 struct ieee80211_vif *vif,
3276 struct ieee80211_chanctx_conf *ctx)
3278 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3280 mutex_lock(&mvm->mutex);
3281 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3282 mutex_unlock(&mvm->mutex);
3286 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3287 struct ieee80211_vif_chanctx_switch *vifs)
3291 mutex_lock(&mvm->mutex);
3292 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3293 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3295 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3297 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3301 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3305 "failed to assign new_ctx during channel switch\n");
3309 /* we don't support TDLS during DCM - can be caused by channel switch */
3310 if (iwl_mvm_phy_ctx_count(mvm) > 1)
3311 iwl_mvm_teardown_tdls_peers(mvm);
3316 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3319 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3320 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3324 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3326 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3333 /* things keep failing, better restart the hw */
3334 iwl_mvm_nic_restart(mvm, false);
3337 mutex_unlock(&mvm->mutex);
3343 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3344 struct ieee80211_vif_chanctx_switch *vifs)
3348 mutex_lock(&mvm->mutex);
3349 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3351 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3355 "failed to assign new_ctx during channel switch\n");
3362 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3364 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3371 /* things keep failing, better restart the hw */
3372 iwl_mvm_nic_restart(mvm, false);
3375 mutex_unlock(&mvm->mutex);
3380 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3381 struct ieee80211_vif_chanctx_switch *vifs,
3383 enum ieee80211_chanctx_switch_mode mode)
3385 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3388 /* we only support a single-vif right now */
3393 case CHANCTX_SWMODE_SWAP_CONTEXTS:
3394 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3396 case CHANCTX_SWMODE_REASSIGN_VIF:
3397 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3407 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3408 struct ieee80211_sta *sta,
3411 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3412 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3414 if (!mvm_sta || !mvm_sta->vif) {
3415 IWL_ERR(mvm, "Station is not associated to a vif\n");
3419 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3422 #ifdef CONFIG_NL80211_TESTMODE
3423 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3424 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3425 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3426 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3429 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3430 struct ieee80211_vif *vif,
3431 void *data, int len)
3433 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3437 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3441 if (!tb[IWL_MVM_TM_ATTR_CMD])
3444 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3445 case IWL_MVM_TM_CMD_SET_NOA:
3446 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3447 !vif->bss_conf.enable_beacon ||
3448 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3451 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3452 if (noa_duration >= vif->bss_conf.beacon_int)
3455 mvm->noa_duration = noa_duration;
3458 return iwl_mvm_update_quotas(mvm, NULL);
3459 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3460 /* must be associated client vif - ignore authorized */
3461 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3462 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3463 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3466 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3467 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3468 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3474 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3475 struct ieee80211_vif *vif,
3476 void *data, int len)
3478 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3481 mutex_lock(&mvm->mutex);
3482 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3483 mutex_unlock(&mvm->mutex);
3489 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3490 struct ieee80211_vif *vif,
3491 struct ieee80211_channel_switch *chsw)
3493 /* By implementing this operation, we prevent mac80211 from
3494 * starting its own channel switch timer, so that we can call
3495 * ieee80211_chswitch_done() ourselves at the right time
3496 * (which is when the absence time event starts).
3499 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3500 "dummy channel switch op\n");
3503 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3504 struct ieee80211_vif *vif,
3505 struct ieee80211_channel_switch *chsw)
3507 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3508 struct ieee80211_vif *csa_vif;
3509 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3513 mutex_lock(&mvm->mutex);
3515 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3516 chsw->chandef.center_freq1);
3518 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH,
3521 switch (vif->type) {
3522 case NL80211_IFTYPE_AP:
3524 rcu_dereference_protected(mvm->csa_vif,
3525 lockdep_is_held(&mvm->mutex));
3526 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3527 "Another CSA is already in progress")) {
3532 rcu_assign_pointer(mvm->csa_vif, vif);
3534 if (WARN_ONCE(mvmvif->csa_countdown,
3535 "Previous CSA countdown didn't complete")) {
3541 case NL80211_IFTYPE_STATION:
3542 /* Schedule the time event to a bit before beacon 1,
3543 * to make sure we're in the new channel when the
3546 apply_time = chsw->device_timestamp +
3547 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3548 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3551 iwl_mvm_csa_client_absent(mvm, vif);
3553 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3555 if (mvmvif->bf_data.bf_enabled) {
3556 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3566 mvmvif->ps_disabled = true;
3568 ret = iwl_mvm_power_update_ps(mvm);
3572 /* we won't be on this channel any longer */
3573 iwl_mvm_teardown_tdls_peers(mvm);
3576 mutex_unlock(&mvm->mutex);
3581 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3582 struct ieee80211_vif *vif)
3584 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3585 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3588 mutex_lock(&mvm->mutex);
3590 if (vif->type == NL80211_IFTYPE_STATION) {
3591 struct iwl_mvm_sta *mvmsta;
3593 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3596 if (WARN_ON(!mvmsta)) {
3601 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3603 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3605 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3609 iwl_mvm_stop_session_protection(mvm, vif);
3612 mvmvif->ps_disabled = false;
3614 ret = iwl_mvm_power_update_ps(mvm);
3617 mutex_unlock(&mvm->mutex);
3622 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3623 struct ieee80211_vif *vif, u32 queues, bool drop)
3625 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3626 struct iwl_mvm_vif *mvmvif;
3627 struct iwl_mvm_sta *mvmsta;
3628 struct ieee80211_sta *sta;
3632 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3635 mutex_lock(&mvm->mutex);
3636 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3638 /* flush the AP-station and all TDLS peers */
3639 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3640 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3641 lockdep_is_held(&mvm->mutex));
3642 if (IS_ERR_OR_NULL(sta))
3645 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3646 if (mvmsta->vif != vif)
3649 /* make sure only TDLS peers or the AP are flushed */
3650 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3652 msk |= mvmsta->tfd_queue_msk;
3656 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3657 IWL_ERR(mvm, "flush request fail\n");
3658 mutex_unlock(&mvm->mutex);
3660 mutex_unlock(&mvm->mutex);
3662 /* this can take a while, and we may need/want other operations
3663 * to succeed while doing this, so do it without the mutex held
3665 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3669 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3670 struct survey_info *survey)
3672 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3675 memset(survey, 0, sizeof(*survey));
3677 /* only support global statistics right now */
3681 if (!(mvm->fw->ucode_capa.capa[0] &
3682 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3685 mutex_lock(&mvm->mutex);
3687 if (mvm->ucode_loaded) {
3688 ret = iwl_mvm_request_statistics(mvm, false);
3693 survey->filled = SURVEY_INFO_TIME |
3694 SURVEY_INFO_TIME_RX |
3695 SURVEY_INFO_TIME_TX |
3696 SURVEY_INFO_TIME_SCAN;
3697 survey->time = mvm->accu_radio_stats.on_time_rf +
3698 mvm->radio_stats.on_time_rf;
3699 do_div(survey->time, USEC_PER_MSEC);
3701 survey->time_rx = mvm->accu_radio_stats.rx_time +
3702 mvm->radio_stats.rx_time;
3703 do_div(survey->time_rx, USEC_PER_MSEC);
3705 survey->time_tx = mvm->accu_radio_stats.tx_time +
3706 mvm->radio_stats.tx_time;
3707 do_div(survey->time_tx, USEC_PER_MSEC);
3709 survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3710 mvm->radio_stats.on_time_scan;
3711 do_div(survey->time_scan, USEC_PER_MSEC);
3714 mutex_unlock(&mvm->mutex);
3718 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3719 struct ieee80211_vif *vif,
3720 struct ieee80211_sta *sta,
3721 struct station_info *sinfo)
3723 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3724 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3725 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3727 if (!(mvm->fw->ucode_capa.capa[0] &
3728 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3731 /* if beacon filtering isn't on mac80211 does it anyway */
3732 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3735 if (!vif->bss_conf.assoc)
3738 mutex_lock(&mvm->mutex);
3740 if (mvmvif->ap_sta_id != mvmsta->sta_id)
3743 if (iwl_mvm_request_statistics(mvm, false))
3746 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3747 mvmvif->beacon_stats.accu_num_beacons;
3748 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3749 if (mvmvif->beacon_stats.avg_signal) {
3750 /* firmware only reports a value after RXing a few beacons */
3751 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3752 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3755 mutex_unlock(&mvm->mutex);
3758 const struct ieee80211_ops iwl_mvm_hw_ops = {
3759 .tx = iwl_mvm_mac_tx,
3760 .ampdu_action = iwl_mvm_mac_ampdu_action,
3761 .start = iwl_mvm_mac_start,
3762 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3763 .stop = iwl_mvm_mac_stop,
3764 .add_interface = iwl_mvm_mac_add_interface,
3765 .remove_interface = iwl_mvm_mac_remove_interface,
3766 .config = iwl_mvm_mac_config,
3767 .prepare_multicast = iwl_mvm_prepare_multicast,
3768 .configure_filter = iwl_mvm_configure_filter,
3769 .bss_info_changed = iwl_mvm_bss_info_changed,
3770 .hw_scan = iwl_mvm_mac_hw_scan,
3771 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3772 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3773 .sta_state = iwl_mvm_mac_sta_state,
3774 .sta_notify = iwl_mvm_mac_sta_notify,
3775 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3776 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3777 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3778 .sta_rc_update = iwl_mvm_sta_rc_update,
3779 .conf_tx = iwl_mvm_mac_conf_tx,
3780 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3781 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3782 .flush = iwl_mvm_mac_flush,
3783 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3784 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3785 .set_key = iwl_mvm_mac_set_key,
3786 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3787 .remain_on_channel = iwl_mvm_roc,
3788 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3789 .add_chanctx = iwl_mvm_add_chanctx,
3790 .remove_chanctx = iwl_mvm_remove_chanctx,
3791 .change_chanctx = iwl_mvm_change_chanctx,
3792 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3793 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3794 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3796 .start_ap = iwl_mvm_start_ap_ibss,
3797 .stop_ap = iwl_mvm_stop_ap_ibss,
3798 .join_ibss = iwl_mvm_start_ap_ibss,
3799 .leave_ibss = iwl_mvm_stop_ap_ibss,
3801 .set_tim = iwl_mvm_set_tim,
3803 .channel_switch = iwl_mvm_channel_switch,
3804 .pre_channel_switch = iwl_mvm_pre_channel_switch,
3805 .post_channel_switch = iwl_mvm_post_channel_switch,
3807 .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3808 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3809 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3811 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3813 #ifdef CONFIG_PM_SLEEP
3815 .suspend = iwl_mvm_suspend,
3816 .resume = iwl_mvm_resume,
3817 .set_wakeup = iwl_mvm_set_wakeup,
3818 .set_rekey_data = iwl_mvm_set_rekey_data,
3819 #if IS_ENABLED(CONFIG_IPV6)
3820 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3822 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3824 .get_survey = iwl_mvm_mac_get_survey,
3825 .sta_statistics = iwl_mvm_mac_sta_statistics,