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"
89 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
92 .types = BIT(NL80211_IFTYPE_STATION),
96 .types = BIT(NL80211_IFTYPE_AP) |
97 BIT(NL80211_IFTYPE_P2P_CLIENT) |
98 BIT(NL80211_IFTYPE_P2P_GO),
102 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
106 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
108 .num_different_channels = 1,
110 .limits = iwl_mvm_limits,
111 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
115 #ifdef CONFIG_PM_SLEEP
116 static const struct nl80211_wowlan_tcp_data_token_feature
117 iwl_mvm_wowlan_tcp_token_feature = {
120 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
123 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
124 .tok = &iwl_mvm_wowlan_tcp_token_feature,
125 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
126 sizeof(struct ethhdr) -
127 sizeof(struct iphdr) -
128 sizeof(struct tcphdr),
129 .data_interval_max = 65535, /* __le16 in API */
130 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
131 sizeof(struct ethhdr) -
132 sizeof(struct iphdr) -
133 sizeof(struct tcphdr),
138 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
140 * Use the reserved field to indicate magic values.
141 * these values will only be used internally by the driver,
142 * and won't make it to the fw (reserved will be 0).
143 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
144 * be the vif's ip address. in case there is not a single
145 * ip address (0, or more than 1), this attribute will
147 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
148 * the LSB bytes of the vif's mac address
151 BC_FILTER_MAGIC_NONE = 0,
156 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
160 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
163 /* frame type - arp, hw type - ethernet */
165 BCAST_FILTER_OFFSET_PAYLOAD_START,
166 .offset = sizeof(rfc1042_header),
167 .val = cpu_to_be32(0x08060001),
168 .mask = cpu_to_be32(0xffffffff),
173 BCAST_FILTER_OFFSET_PAYLOAD_START,
174 .offset = sizeof(rfc1042_header) + 2 +
175 sizeof(struct arphdr) +
176 ETH_ALEN + sizeof(__be32) +
178 .mask = cpu_to_be32(0xffffffff),
179 /* mark it as special field */
180 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
185 /* dhcp offer bcast */
187 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
190 /* udp dest port - 68 (bootp client)*/
191 .offset_type = BCAST_FILTER_OFFSET_IP_END,
192 .offset = offsetof(struct udphdr, dest),
193 .val = cpu_to_be32(0x00440000),
194 .mask = cpu_to_be32(0xffff0000),
197 /* dhcp - lsb bytes of client hw address */
198 .offset_type = BCAST_FILTER_OFFSET_IP_END,
200 .mask = cpu_to_be32(0xffffffff),
201 /* mark it as special field */
202 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
206 /* last filter must be empty */
211 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
213 if (!iwl_mvm_is_d0i3_supported(mvm))
216 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
217 spin_lock_bh(&mvm->refs_lock);
218 mvm->refs[ref_type]++;
219 spin_unlock_bh(&mvm->refs_lock);
220 iwl_trans_ref(mvm->trans);
223 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
225 if (!iwl_mvm_is_d0i3_supported(mvm))
228 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
229 spin_lock_bh(&mvm->refs_lock);
230 WARN_ON(!mvm->refs[ref_type]--);
231 spin_unlock_bh(&mvm->refs_lock);
232 iwl_trans_unref(mvm->trans);
235 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
236 enum iwl_mvm_ref_type except_ref)
240 if (!iwl_mvm_is_d0i3_supported(mvm))
243 spin_lock_bh(&mvm->refs_lock);
244 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
245 if (except_ref == i || !mvm->refs[i])
248 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
250 for (j = 0; j < mvm->refs[i]; j++)
251 iwl_trans_unref(mvm->trans);
254 spin_unlock_bh(&mvm->refs_lock);
257 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
262 if (!iwl_mvm_is_d0i3_supported(mvm))
265 spin_lock_bh(&mvm->refs_lock);
266 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
272 spin_unlock_bh(&mvm->refs_lock);
277 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
279 iwl_mvm_ref(mvm, ref_type);
281 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
282 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
285 iwl_mvm_unref(mvm, ref_type);
292 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
296 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
297 for (i = 0; i < NUM_PHY_CTX; i++) {
298 mvm->phy_ctxts[i].id = i;
299 mvm->phy_ctxts[i].ref = 0;
303 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
305 struct ieee80211_hw *hw = mvm->hw;
308 /* Tell mac80211 our characteristics */
309 hw->flags = IEEE80211_HW_SIGNAL_DBM |
310 IEEE80211_HW_SPECTRUM_MGMT |
311 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
312 IEEE80211_HW_QUEUE_CONTROL |
313 IEEE80211_HW_WANT_MONITOR_VIF |
314 IEEE80211_HW_SUPPORTS_PS |
315 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
316 IEEE80211_HW_AMPDU_AGGREGATION |
317 IEEE80211_HW_TIMING_BEACON_ONLY |
318 IEEE80211_HW_CONNECTION_MONITOR |
319 IEEE80211_HW_CHANCTX_STA_CSA |
320 IEEE80211_HW_SUPPORTS_CLONED_SKBS;
322 hw->queues = mvm->first_agg_queue;
323 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
324 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
325 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
326 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
327 hw->rate_control_algorithm = "iwl-mvm-rs";
330 * Enable 11w if advertised by firmware and software crypto
331 * is not enabled (as the firmware will interpret some mgmt
332 * packets, so enabling it with software crypto isn't safe)
334 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
335 !iwlwifi_mod_params.sw_crypto)
336 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
338 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
339 IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 &&
340 !iwlwifi_mod_params.uapsd_disable) {
341 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
342 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
343 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
346 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN ||
347 mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
348 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
349 hw->wiphy->features |=
350 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
351 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
354 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
355 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
356 hw->chanctx_data_size = sizeof(u16);
358 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
359 BIT(NL80211_IFTYPE_P2P_CLIENT) |
360 BIT(NL80211_IFTYPE_AP) |
361 BIT(NL80211_IFTYPE_P2P_GO) |
362 BIT(NL80211_IFTYPE_P2P_DEVICE) |
363 BIT(NL80211_IFTYPE_ADHOC);
365 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
366 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
367 REGULATORY_DISABLE_BEACON_HINTS;
369 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
370 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
372 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW)
373 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
375 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
376 hw->wiphy->n_iface_combinations =
377 ARRAY_SIZE(iwl_mvm_iface_combinations);
379 hw->wiphy->max_remain_on_channel_duration = 10000;
380 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
382 /* Extract MAC address */
383 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
384 hw->wiphy->addresses = mvm->addresses;
385 hw->wiphy->n_addresses = 1;
387 /* Extract additional MAC addresses if available */
388 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
389 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
391 for (i = 1; i < num_mac; i++) {
392 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
394 mvm->addresses[i].addr[5]++;
395 hw->wiphy->n_addresses++;
398 iwl_mvm_reset_phy_ctxts(mvm);
400 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
402 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
404 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
405 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
406 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
407 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
408 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
409 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
411 hw->wiphy->hw_version = mvm->trans->hw_id;
413 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
414 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
416 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
418 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
419 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
420 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
421 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
422 /* we create the 802.11 header and zero length SSID IE. */
423 hw->wiphy->max_sched_scan_ie_len =
424 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
427 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
428 NL80211_FEATURE_LOW_PRIORITY_SCAN |
429 NL80211_FEATURE_P2P_GO_OPPPS |
430 NL80211_FEATURE_DYNAMIC_SMPS |
431 NL80211_FEATURE_STATIC_SMPS |
432 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
434 if (mvm->fw->ucode_capa.capa[0] &
435 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
436 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
437 if (mvm->fw->ucode_capa.capa[0] &
438 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
439 hw->wiphy->features |= NL80211_FEATURE_QUIET;
441 if (mvm->fw->ucode_capa.capa[0] &
442 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
443 hw->wiphy->features |=
444 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
446 if (mvm->fw->ucode_capa.capa[0] &
447 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
448 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
450 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
452 /* currently FW API supports only one optional cipher scheme */
453 if (mvm->fw->cs[0].cipher) {
454 mvm->hw->n_cipher_schemes = 1;
455 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
458 #ifdef CONFIG_PM_SLEEP
459 if (iwl_mvm_is_d0i3_supported(mvm) &&
460 device_can_wakeup(mvm->trans->dev)) {
461 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
462 hw->wiphy->wowlan = &mvm->wowlan;
463 } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
464 mvm->trans->ops->d3_suspend &&
465 mvm->trans->ops->d3_resume &&
466 device_can_wakeup(mvm->trans->dev)) {
467 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
468 WIPHY_WOWLAN_DISCONNECT |
469 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
470 WIPHY_WOWLAN_RFKILL_RELEASE;
471 if (!iwlwifi_mod_params.sw_crypto)
472 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
473 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
474 WIPHY_WOWLAN_4WAY_HANDSHAKE;
476 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
477 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
478 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
479 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
480 hw->wiphy->wowlan = &mvm->wowlan;
484 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
485 /* assign default bcast filtering configuration */
486 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
489 ret = iwl_mvm_leds_init(mvm);
493 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
494 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
495 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
498 ret = ieee80211_register_hw(mvm->hw);
500 iwl_mvm_leds_exit(mvm);
505 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
506 struct ieee80211_sta *sta,
509 struct iwl_mvm_sta *mvmsta;
513 * double check the IN_D0I3 flag both before and after
514 * taking the spinlock, in order to prevent taking
515 * the spinlock when not needed.
517 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
520 spin_lock(&mvm->d0i3_tx_lock);
522 * testing the flag again ensures the skb dequeue
523 * loop (on d0i3 exit) hasn't run yet.
525 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
528 mvmsta = iwl_mvm_sta_from_mac80211(sta);
529 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
530 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
533 __skb_queue_tail(&mvm->d0i3_tx, skb);
534 ieee80211_stop_queues(mvm->hw);
537 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
538 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
542 spin_unlock(&mvm->d0i3_tx_lock);
546 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
547 struct ieee80211_tx_control *control,
550 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
551 struct ieee80211_sta *sta = control->sta;
552 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
553 struct ieee80211_hdr *hdr = (void *)skb->data;
555 if (iwl_mvm_is_radio_killed(mvm)) {
556 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
560 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
561 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
562 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
565 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
566 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
567 ieee80211_is_mgmt(hdr->frame_control) &&
568 !ieee80211_is_deauth(hdr->frame_control) &&
569 !ieee80211_is_disassoc(hdr->frame_control) &&
570 !ieee80211_is_action(hdr->frame_control)))
574 if (iwl_mvm_defer_tx(mvm, sta, skb))
576 if (iwl_mvm_tx_skb(mvm, skb, sta))
581 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
585 ieee80211_free_txskb(hw, skb);
588 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
590 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
595 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
597 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
599 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
602 /* enabled by default */
606 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
607 struct ieee80211_vif *vif,
608 enum ieee80211_ampdu_mlme_action action,
609 struct ieee80211_sta *sta, u16 tid,
610 u16 *ssn, u8 buf_size)
612 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
614 bool tx_agg_ref = false;
616 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
617 sta->addr, tid, action);
619 if (!(mvm->nvm_data->sku_cap_11n_enable))
622 /* return from D0i3 before starting a new Tx aggregation */
624 case IEEE80211_AMPDU_TX_START:
625 case IEEE80211_AMPDU_TX_STOP_CONT:
626 case IEEE80211_AMPDU_TX_STOP_FLUSH:
627 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
628 case IEEE80211_AMPDU_TX_OPERATIONAL:
630 * for tx start, wait synchronously until D0i3 exit to
631 * get the correct sequence number for the tid.
632 * additionally, some other ampdu actions use direct
633 * target access, which is not handled automatically
634 * by the trans layer (unlike commands), so wait for
635 * d0i3 exit in these cases as well.
637 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
647 mutex_lock(&mvm->mutex);
650 case IEEE80211_AMPDU_RX_START:
651 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
655 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
657 case IEEE80211_AMPDU_RX_STOP:
658 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
660 case IEEE80211_AMPDU_TX_START:
661 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
665 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
667 case IEEE80211_AMPDU_TX_STOP_CONT:
668 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
670 case IEEE80211_AMPDU_TX_STOP_FLUSH:
671 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
672 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
674 case IEEE80211_AMPDU_TX_OPERATIONAL:
675 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
682 mutex_unlock(&mvm->mutex);
685 * If the tid is marked as started, we won't use it for offloaded
686 * traffic on the next D0i3 entry. It's safe to unref.
689 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
694 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
695 struct ieee80211_vif *vif)
697 struct iwl_mvm *mvm = data;
698 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
700 mvmvif->uploaded = false;
701 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
703 /* does this make sense at all? */
706 spin_lock_bh(&mvm->time_event_lock);
707 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
708 spin_unlock_bh(&mvm->time_event_lock);
710 mvmvif->phy_ctxt = NULL;
711 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
714 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
715 const void *data, size_t datalen)
717 const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
719 ssize_t bytes_read_trans;
721 if (offset < dump_ptrs->op_mode_len) {
722 bytes_read = min_t(ssize_t, count,
723 dump_ptrs->op_mode_len - offset);
724 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
726 offset += bytes_read;
735 if (!dump_ptrs->trans_ptr)
738 offset -= dump_ptrs->op_mode_len;
739 bytes_read_trans = min_t(ssize_t, count,
740 dump_ptrs->trans_ptr->len - offset);
741 memcpy(buffer + bytes_read,
742 (u8 *)dump_ptrs->trans_ptr->data + offset,
745 return bytes_read + bytes_read_trans;
748 static void iwl_mvm_free_coredump(const void *data)
750 const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
752 vfree(fw_error_dump->op_mode_ptr);
753 vfree(fw_error_dump->trans_ptr);
754 kfree(fw_error_dump);
757 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
759 struct iwl_fw_error_dump_file *dump_file;
760 struct iwl_fw_error_dump_data *dump_data;
761 struct iwl_fw_error_dump_info *dump_info;
762 struct iwl_mvm_dump_ptrs *fw_error_dump;
763 const struct fw_img *img;
764 u32 sram_len, sram_ofs;
765 u32 file_len, rxf_len;
769 lockdep_assert_held(&mvm->mutex);
771 fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
775 img = &mvm->fw->img[mvm->cur_ucode];
776 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
777 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
779 /* reading buffer size */
780 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
781 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
783 /* the register holds the value divided by 128 */
784 rxf_len = rxf_len << 7;
786 file_len = sizeof(*dump_file) +
787 sizeof(*dump_data) * 3 +
792 dump_file = vzalloc(file_len);
794 kfree(fw_error_dump);
798 fw_error_dump->op_mode_ptr = dump_file;
800 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
801 dump_data = (void *)dump_file->data;
803 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
804 dump_data->len = cpu_to_le32(sizeof(*dump_info));
805 dump_info = (void *) dump_data->data;
806 dump_info->device_family =
807 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
808 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
809 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
810 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
811 sizeof(dump_info->fw_human_readable));
812 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
813 sizeof(dump_info->dev_human_readable));
814 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
815 sizeof(dump_info->bus_human_readable));
817 dump_data = iwl_fw_error_next_data(dump_data);
818 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
819 dump_data->len = cpu_to_le32(rxf_len);
821 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
822 u32 *rxf = (void *)dump_data->data;
825 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
826 iwl_trans_write_prph(mvm->trans,
827 RXF_LD_FENCE_OFFSET_ADDR,
829 rxf[i] = iwl_trans_read_prph(mvm->trans,
830 RXF_FIFO_RD_FENCE_ADDR);
832 iwl_trans_release_nic_access(mvm->trans, &flags);
835 dump_data = iwl_fw_error_next_data(dump_data);
836 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
837 dump_data->len = cpu_to_le32(sram_len);
838 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
841 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
842 fw_error_dump->op_mode_len = file_len;
843 if (fw_error_dump->trans_ptr)
844 file_len += fw_error_dump->trans_ptr->len;
845 dump_file->file_len = cpu_to_le32(file_len);
847 dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
848 GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
851 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
853 /* clear the D3 reconfig, we only need it to avoid dumping a
854 * firmware coredump on reconfiguration, we shouldn't do that
855 * on D3->D0 transition
857 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status))
858 iwl_mvm_fw_error_dump(mvm);
860 iwl_trans_stop_device(mvm->trans);
862 mvm->scan_status = IWL_MVM_SCAN_NONE;
863 mvm->ps_disabled = false;
864 mvm->calibrating = false;
866 /* just in case one was running */
867 ieee80211_remain_on_channel_expired(mvm->hw);
869 ieee80211_iterate_active_interfaces_atomic(
870 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
871 iwl_mvm_cleanup_iterator, mvm);
873 mvm->p2p_device_vif = NULL;
874 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
876 iwl_mvm_reset_phy_ctxts(mvm);
877 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
878 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
879 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
880 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
881 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
882 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
883 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
884 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
885 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
887 ieee80211_wake_queues(mvm->hw);
889 /* cleanup all stale references (scan, roc), but keep the
890 * ucode_down ref until reconfig is complete */
891 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
893 /* clear any stale d0i3 state */
894 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
897 mvm->rx_ba_sessions = 0;
900 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
904 lockdep_assert_held(&mvm->mutex);
906 /* Clean up some internal and mac80211 state on restart */
907 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
908 iwl_mvm_restart_cleanup(mvm);
910 ret = iwl_mvm_up(mvm);
912 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
913 /* Something went wrong - we need to finish some cleanup
914 * that normally iwl_mvm_mac_restart_complete() below
917 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
918 iwl_mvm_d0i3_enable_tx(mvm, NULL);
924 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
926 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
929 mutex_lock(&mvm->mutex);
930 ret = __iwl_mvm_mac_start(mvm);
931 mutex_unlock(&mvm->mutex);
936 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
940 mutex_lock(&mvm->mutex);
942 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
943 iwl_mvm_d0i3_enable_tx(mvm, NULL);
944 ret = iwl_mvm_update_quotas(mvm, NULL);
946 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
949 /* allow transport/FW low power modes */
950 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
953 * If we have TDLS peers, remove them. We don't know the last seqno/PN
954 * of packets the FW sent out, so we must reconnect.
956 iwl_mvm_teardown_tdls_peers(mvm);
958 mutex_unlock(&mvm->mutex);
961 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
965 if (!iwl_mvm_is_d0i3_supported(mvm))
968 mutex_lock(&mvm->d0i3_suspend_mutex);
969 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
970 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
971 &mvm->d0i3_suspend_flags);
972 mutex_unlock(&mvm->d0i3_suspend_mutex);
975 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
976 _iwl_mvm_exit_d0i3(mvm);
981 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
982 enum ieee80211_reconfig_type reconfig_type)
984 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
986 switch (reconfig_type) {
987 case IEEE80211_RECONFIG_TYPE_RESTART:
988 iwl_mvm_restart_complete(mvm);
990 case IEEE80211_RECONFIG_TYPE_SUSPEND:
991 iwl_mvm_resume_complete(mvm);
996 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
998 lockdep_assert_held(&mvm->mutex);
1000 /* disallow low power states when the FW is down */
1001 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1003 /* async_handlers_wk is now blocked */
1006 * The work item could be running or queued if the
1007 * ROC time event stops just as we get here.
1009 cancel_work_sync(&mvm->roc_done_wk);
1011 iwl_trans_stop_device(mvm->trans);
1013 iwl_mvm_async_handlers_purge(mvm);
1014 /* async_handlers_list is empty and will stay empty: HW is stopped */
1016 /* the fw is stopped, the aux sta is dead: clean up driver state */
1017 iwl_mvm_del_aux_sta(mvm);
1019 mvm->ucode_loaded = false;
1022 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1024 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1026 flush_work(&mvm->d0i3_exit_work);
1027 flush_work(&mvm->async_handlers_wk);
1028 flush_work(&mvm->fw_error_dump_wk);
1030 mutex_lock(&mvm->mutex);
1031 __iwl_mvm_mac_stop(mvm);
1032 mutex_unlock(&mvm->mutex);
1035 * The worker might have been waiting for the mutex, let it run and
1036 * discover that its list is now empty.
1038 cancel_work_sync(&mvm->async_handlers_wk);
1041 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1045 lockdep_assert_held(&mvm->mutex);
1047 for (i = 0; i < NUM_PHY_CTX; i++)
1048 if (!mvm->phy_ctxts[i].ref)
1049 return &mvm->phy_ctxts[i];
1051 IWL_ERR(mvm, "No available PHY context\n");
1055 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1058 /* FW is in charge of regulatory enforcement */
1059 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1060 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1061 .pwr_restriction = cpu_to_le16(tx_power),
1064 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1065 sizeof(reduce_txpwr_cmd),
1069 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1070 struct ieee80211_vif *vif)
1072 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1073 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1077 * make sure D0i3 exit is completed, otherwise a target access
1078 * during tx queue configuration could be done when still in
1081 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1086 * Not much to do here. The stack will not allow interface
1087 * types or combinations that we didn't advertise, so we
1088 * don't really have to check the types.
1091 mutex_lock(&mvm->mutex);
1093 /* Allocate resources for the MAC context, and add it to the fw */
1094 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1098 /* Counting number of interfaces is needed for legacy PM */
1099 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1103 * The AP binding flow can be done only after the beacon
1104 * template is configured (which happens only in the mac80211
1105 * start_ap() flow), and adding the broadcast station can happen
1106 * only after the binding.
1107 * In addition, since modifying the MAC before adding a bcast
1108 * station is not allowed by the FW, delay the adding of MAC context to
1109 * the point where we can also add the bcast station.
1110 * In short: there's not much we can do at this point, other than
1111 * allocating resources :)
1113 if (vif->type == NL80211_IFTYPE_AP ||
1114 vif->type == NL80211_IFTYPE_ADHOC) {
1115 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1117 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1121 iwl_mvm_vif_dbgfs_register(mvm, vif);
1125 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1129 ret = iwl_mvm_power_update_mac(mvm);
1133 /* beacon filtering */
1134 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1136 goto out_remove_mac;
1138 if (!mvm->bf_allowed_vif &&
1139 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1140 mvm->bf_allowed_vif = mvmvif;
1141 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1142 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1146 * P2P_DEVICE interface does not have a channel context assigned to it,
1147 * so a dedicated PHY context is allocated to it and the corresponding
1148 * MAC context is bound to it at this stage.
1150 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1152 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1153 if (!mvmvif->phy_ctxt) {
1158 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1159 ret = iwl_mvm_binding_add_vif(mvm, vif);
1163 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1167 /* Save a pointer to p2p device vif, so it can later be used to
1168 * update the p2p device MAC when a GO is started/stopped */
1169 mvm->p2p_device_vif = vif;
1172 iwl_mvm_vif_dbgfs_register(mvm, vif);
1176 iwl_mvm_binding_remove_vif(mvm, vif);
1178 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1180 if (mvm->bf_allowed_vif == mvmvif) {
1181 mvm->bf_allowed_vif = NULL;
1182 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1183 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1186 mvmvif->phy_ctxt = NULL;
1187 iwl_mvm_mac_ctxt_remove(mvm, vif);
1189 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1192 iwl_mvm_mac_ctxt_release(mvm, vif);
1194 mutex_unlock(&mvm->mutex);
1196 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1201 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1202 struct ieee80211_vif *vif)
1204 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1207 mutex_lock(&mvm->mutex);
1208 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1209 mutex_unlock(&mvm->mutex);
1212 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1214 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1215 * We assume here that all the packets sent to the OFFCHANNEL
1216 * queue are sent in ROC session.
1218 flush_work(&mvm->roc_done_wk);
1221 * By now, all the AC queues are empty. The AGG queues are
1222 * empty too. We already got all the Tx responses for all the
1223 * packets in the queues. The drain work can have been
1224 * triggered. Flush it.
1226 flush_work(&mvm->sta_drained_wk);
1230 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1231 struct ieee80211_vif *vif)
1233 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1234 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1236 iwl_mvm_prepare_mac_removal(mvm, vif);
1238 mutex_lock(&mvm->mutex);
1240 if (mvm->bf_allowed_vif == mvmvif) {
1241 mvm->bf_allowed_vif = NULL;
1242 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1243 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1246 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1249 * For AP/GO interface, the tear down of the resources allocated to the
1250 * interface is be handled as part of the stop_ap flow.
1252 if (vif->type == NL80211_IFTYPE_AP ||
1253 vif->type == NL80211_IFTYPE_ADHOC) {
1254 #ifdef CONFIG_NL80211_TESTMODE
1255 if (vif == mvm->noa_vif) {
1256 mvm->noa_vif = NULL;
1257 mvm->noa_duration = 0;
1260 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1264 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1265 mvm->p2p_device_vif = NULL;
1266 iwl_mvm_rm_bcast_sta(mvm, vif);
1267 iwl_mvm_binding_remove_vif(mvm, vif);
1268 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1269 mvmvif->phy_ctxt = NULL;
1272 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1275 iwl_mvm_power_update_mac(mvm);
1276 iwl_mvm_mac_ctxt_remove(mvm, vif);
1279 iwl_mvm_mac_ctxt_release(mvm, vif);
1280 mutex_unlock(&mvm->mutex);
1283 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1288 struct iwl_mvm_mc_iter_data {
1289 struct iwl_mvm *mvm;
1293 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1294 struct ieee80211_vif *vif)
1296 struct iwl_mvm_mc_iter_data *data = _data;
1297 struct iwl_mvm *mvm = data->mvm;
1298 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1301 /* if we don't have free ports, mcast frames will be dropped */
1302 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1305 if (vif->type != NL80211_IFTYPE_STATION ||
1306 !vif->bss_conf.assoc)
1309 cmd->port_id = data->port_id++;
1310 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1311 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1313 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1315 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1318 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1320 struct iwl_mvm_mc_iter_data iter_data = {
1324 lockdep_assert_held(&mvm->mutex);
1326 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1329 ieee80211_iterate_active_interfaces_atomic(
1330 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1331 iwl_mvm_mc_iface_iterator, &iter_data);
1334 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1335 struct netdev_hw_addr_list *mc_list)
1337 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1338 struct iwl_mcast_filter_cmd *cmd;
1339 struct netdev_hw_addr *addr;
1344 addr_count = netdev_hw_addr_list_count(mc_list);
1345 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1346 IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1350 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1351 cmd = kzalloc(len, GFP_ATOMIC);
1357 return (u64)(unsigned long)cmd;
1360 netdev_hw_addr_list_for_each(addr, mc_list) {
1361 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1362 cmd->count, addr->addr);
1363 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1364 addr->addr, ETH_ALEN);
1368 return (u64)(unsigned long)cmd;
1371 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1372 unsigned int changed_flags,
1373 unsigned int *total_flags,
1376 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1377 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1379 mutex_lock(&mvm->mutex);
1381 /* replace previous configuration */
1382 kfree(mvm->mcast_filter_cmd);
1383 mvm->mcast_filter_cmd = cmd;
1388 iwl_mvm_recalc_multicast(mvm);
1390 mutex_unlock(&mvm->mutex);
1394 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1395 struct iwl_bcast_iter_data {
1396 struct iwl_mvm *mvm;
1397 struct iwl_bcast_filter_cmd *cmd;
1402 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1403 const struct iwl_fw_bcast_filter *in_filter,
1404 struct iwl_fw_bcast_filter *out_filter)
1406 struct iwl_fw_bcast_filter_attr *attr;
1409 memcpy(out_filter, in_filter, sizeof(*out_filter));
1411 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1412 attr = &out_filter->attrs[i];
1417 switch (attr->reserved1) {
1418 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1419 if (vif->bss_conf.arp_addr_cnt != 1) {
1424 attr->val = vif->bss_conf.arp_addr_list[0];
1426 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1427 attr->val = *(__be32 *)&vif->addr[2];
1432 attr->reserved1 = 0;
1433 out_filter->num_attrs++;
1437 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1438 struct ieee80211_vif *vif)
1440 struct iwl_bcast_iter_data *data = _data;
1441 struct iwl_mvm *mvm = data->mvm;
1442 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1443 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1444 struct iwl_fw_bcast_mac *bcast_mac;
1447 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1450 bcast_mac = &cmd->macs[mvmvif->id];
1453 * enable filtering only for associated stations, but not for P2P
1456 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1457 !vif->bss_conf.assoc)
1460 bcast_mac->default_discard = 1;
1462 /* copy all configured filters */
1463 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1465 * Make sure we don't exceed our filters limit.
1466 * if there is still a valid filter to be configured,
1467 * be on the safe side and just allow bcast for this mac.
1469 if (WARN_ON_ONCE(data->current_filter >=
1470 ARRAY_SIZE(cmd->filters))) {
1471 bcast_mac->default_discard = 0;
1472 bcast_mac->attached_filters = 0;
1476 iwl_mvm_set_bcast_filter(vif,
1477 &mvm->bcast_filters[i],
1478 &cmd->filters[data->current_filter]);
1480 /* skip current filter if it contains no attributes */
1481 if (!cmd->filters[data->current_filter].num_attrs)
1484 /* attach the filter to current mac */
1485 bcast_mac->attached_filters |=
1486 cpu_to_le16(BIT(data->current_filter));
1488 data->current_filter++;
1492 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1493 struct iwl_bcast_filter_cmd *cmd)
1495 struct iwl_bcast_iter_data iter_data = {
1500 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1503 memset(cmd, 0, sizeof(*cmd));
1504 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1505 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1507 #ifdef CONFIG_IWLWIFI_DEBUGFS
1508 /* use debugfs filters/macs if override is configured */
1509 if (mvm->dbgfs_bcast_filtering.override) {
1510 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1511 sizeof(cmd->filters));
1512 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1518 /* if no filters are configured, do nothing */
1519 if (!mvm->bcast_filters)
1522 /* configure and attach these filters for each associated sta vif */
1523 ieee80211_iterate_active_interfaces(
1524 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1525 iwl_mvm_bcast_filter_iterator, &iter_data);
1529 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1530 struct ieee80211_vif *vif)
1532 struct iwl_bcast_filter_cmd cmd;
1534 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1537 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1540 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1544 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1545 struct ieee80211_vif *vif)
1551 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1552 struct ieee80211_vif *vif,
1553 struct ieee80211_bss_conf *bss_conf,
1556 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1560 * Re-calculate the tsf id, as the master-slave relations depend on the
1561 * beacon interval, which was not known when the station interface was
1564 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1565 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1568 * If we're not associated yet, take the (new) BSSID before associating
1569 * so the firmware knows. If we're already associated, then use the old
1570 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1571 * branch for disassociation below.
1573 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1574 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1576 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1578 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1580 /* after sending it once, adopt mac80211 data */
1581 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1582 mvmvif->associated = bss_conf->assoc;
1584 if (changes & BSS_CHANGED_ASSOC) {
1585 if (bss_conf->assoc) {
1586 /* add quota for this interface */
1587 ret = iwl_mvm_update_quotas(mvm, NULL);
1589 IWL_ERR(mvm, "failed to update quotas\n");
1593 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1596 * If we're restarting then the firmware will
1597 * obviously have lost synchronisation with
1598 * the AP. It will attempt to synchronise by
1599 * itself, but we can make it more reliable by
1600 * scheduling a session protection time event.
1602 * The firmware needs to receive a beacon to
1603 * catch up with synchronisation, use 110% of
1604 * the beacon interval.
1606 * Set a large maximum delay to allow for more
1607 * than a single interface.
1609 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1610 iwl_mvm_protect_session(mvm, vif, dur, dur,
1614 iwl_mvm_sf_update(mvm, vif, false);
1615 iwl_mvm_power_vif_assoc(mvm, vif);
1617 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1618 iwl_mvm_update_smps(mvm, vif,
1619 IWL_MVM_SMPS_REQ_PROT,
1620 IEEE80211_SMPS_DYNAMIC);
1622 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1624 * If update fails - SF might be running in associated
1625 * mode while disassociated - which is forbidden.
1627 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1628 "Failed to update SF upon disassociation\n");
1630 /* remove AP station now that the MAC is unassoc */
1631 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1633 IWL_ERR(mvm, "failed to remove AP station\n");
1635 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1636 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1637 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1638 /* remove quota for this interface */
1639 ret = iwl_mvm_update_quotas(mvm, NULL);
1641 IWL_ERR(mvm, "failed to update quotas\n");
1644 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1646 /* this will take the cleared BSSID from bss_conf */
1647 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1650 "failed to update MAC %pM (clear after unassoc)\n",
1654 iwl_mvm_recalc_multicast(mvm);
1655 iwl_mvm_configure_bcast_filter(mvm, vif);
1657 /* reset rssi values */
1658 mvmvif->bf_data.ave_beacon_signal = 0;
1660 iwl_mvm_bt_coex_vif_change(mvm);
1661 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1662 IEEE80211_SMPS_AUTOMATIC);
1663 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1665 * We received a beacon _after_ association so
1666 * remove the session protection.
1668 iwl_mvm_remove_time_event(mvm, mvmvif,
1669 &mvmvif->time_event_data);
1672 if (changes & BSS_CHANGED_BEACON_INFO) {
1673 iwl_mvm_sf_update(mvm, vif, false);
1674 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1677 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1678 ret = iwl_mvm_power_update_mac(mvm);
1680 IWL_ERR(mvm, "failed to update power mode\n");
1683 if (changes & BSS_CHANGED_TXPOWER) {
1684 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1686 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1689 if (changes & BSS_CHANGED_CQM) {
1690 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1691 /* reset cqm events tracking */
1692 mvmvif->bf_data.last_cqm_event = 0;
1693 if (mvmvif->bf_data.bf_enabled) {
1694 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1697 "failed to update CQM thresholds\n");
1701 if (changes & BSS_CHANGED_ARP_FILTER) {
1702 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1703 iwl_mvm_configure_bcast_filter(mvm, vif);
1707 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1708 struct ieee80211_vif *vif)
1710 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1711 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1715 * iwl_mvm_mac_ctxt_add() might read directly from the device
1716 * (the system time), so make sure it is available.
1718 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1722 mutex_lock(&mvm->mutex);
1724 /* Send the beacon template */
1725 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1730 * Re-calculate the tsf id, as the master-slave relations depend on the
1731 * beacon interval, which was not known when the AP interface was added.
1733 if (vif->type == NL80211_IFTYPE_AP)
1734 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1736 /* Add the mac context */
1737 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1741 /* Perform the binding */
1742 ret = iwl_mvm_binding_add_vif(mvm, vif);
1746 /* Send the bcast station. At this stage the TBTT and DTIM time events
1747 * are added and applied to the scheduler */
1748 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1752 /* must be set before quota calculations */
1753 mvmvif->ap_ibss_active = true;
1755 /* power updated needs to be done before quotas */
1756 iwl_mvm_power_update_mac(mvm);
1758 ret = iwl_mvm_update_quotas(mvm, NULL);
1760 goto out_quota_failed;
1762 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1763 if (vif->p2p && mvm->p2p_device_vif)
1764 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1766 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1768 iwl_mvm_bt_coex_vif_change(mvm);
1770 /* we don't support TDLS during DCM */
1771 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1772 iwl_mvm_teardown_tdls_peers(mvm);
1774 mutex_unlock(&mvm->mutex);
1778 iwl_mvm_power_update_mac(mvm);
1779 mvmvif->ap_ibss_active = false;
1780 iwl_mvm_send_rm_bcast_sta(mvm, vif);
1782 iwl_mvm_binding_remove_vif(mvm, vif);
1784 iwl_mvm_mac_ctxt_remove(mvm, vif);
1786 mutex_unlock(&mvm->mutex);
1787 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
1791 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1792 struct ieee80211_vif *vif)
1794 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1795 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1797 iwl_mvm_prepare_mac_removal(mvm, vif);
1799 mutex_lock(&mvm->mutex);
1801 /* Handle AP stop while in CSA */
1802 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1803 iwl_mvm_remove_time_event(mvm, mvmvif,
1804 &mvmvif->time_event_data);
1805 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1808 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1809 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1810 mvm->csa_tx_block_bcn_timeout = 0;
1813 mvmvif->ap_ibss_active = false;
1814 mvm->ap_last_beacon_gp2 = 0;
1816 iwl_mvm_bt_coex_vif_change(mvm);
1818 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1820 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1821 if (vif->p2p && mvm->p2p_device_vif)
1822 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1824 iwl_mvm_update_quotas(mvm, NULL);
1825 iwl_mvm_send_rm_bcast_sta(mvm, vif);
1826 iwl_mvm_binding_remove_vif(mvm, vif);
1828 iwl_mvm_power_update_mac(mvm);
1830 iwl_mvm_mac_ctxt_remove(mvm, vif);
1832 mutex_unlock(&mvm->mutex);
1836 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1837 struct ieee80211_vif *vif,
1838 struct ieee80211_bss_conf *bss_conf,
1841 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1843 /* Changes will be applied when the AP/IBSS is started */
1844 if (!mvmvif->ap_ibss_active)
1847 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1848 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
1849 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
1850 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1852 /* Need to send a new beacon template to the FW */
1853 if (changes & BSS_CHANGED_BEACON &&
1854 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1855 IWL_WARN(mvm, "Failed updating beacon data\n");
1857 if (changes & BSS_CHANGED_TXPOWER) {
1858 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1860 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1865 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1866 struct ieee80211_vif *vif,
1867 struct ieee80211_bss_conf *bss_conf,
1870 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1873 * iwl_mvm_bss_info_changed_station() might call
1874 * iwl_mvm_protect_session(), which reads directly from
1875 * the device (the system time), so make sure it is available.
1877 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1880 mutex_lock(&mvm->mutex);
1882 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
1883 iwl_mvm_scan_offload_stop(mvm, true);
1885 switch (vif->type) {
1886 case NL80211_IFTYPE_STATION:
1887 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1889 case NL80211_IFTYPE_AP:
1890 case NL80211_IFTYPE_ADHOC:
1891 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1894 /* shouldn't happen */
1898 mutex_unlock(&mvm->mutex);
1899 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
1902 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1903 enum iwl_scan_status scan_type)
1906 bool wait_for_handlers = false;
1908 mutex_lock(&mvm->mutex);
1910 if (mvm->scan_status != scan_type) {
1912 /* make sure there are no pending notifications */
1913 wait_for_handlers = true;
1917 switch (scan_type) {
1918 case IWL_MVM_SCAN_SCHED:
1919 ret = iwl_mvm_scan_offload_stop(mvm, true);
1921 case IWL_MVM_SCAN_OS:
1922 ret = iwl_mvm_cancel_scan(mvm);
1924 case IWL_MVM_SCAN_NONE:
1933 wait_for_handlers = true;
1935 mutex_unlock(&mvm->mutex);
1937 /* make sure we consume the completion notification */
1938 if (wait_for_handlers)
1939 iwl_mvm_wait_for_async_handlers(mvm);
1943 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1944 struct ieee80211_vif *vif,
1945 struct ieee80211_scan_request *hw_req)
1947 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1948 struct cfg80211_scan_request *req = &hw_req->req;
1951 if (req->n_channels == 0 ||
1952 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1955 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1956 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1961 mutex_lock(&mvm->mutex);
1963 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1968 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1970 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
1971 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
1972 else if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1973 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1975 ret = iwl_mvm_scan_request(mvm, vif, req);
1978 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1980 mutex_unlock(&mvm->mutex);
1984 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1985 struct ieee80211_vif *vif)
1987 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1989 mutex_lock(&mvm->mutex);
1991 iwl_mvm_cancel_scan(mvm);
1993 mutex_unlock(&mvm->mutex);
1997 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1998 struct ieee80211_sta *sta, u16 tids,
2000 enum ieee80211_frame_release_type reason,
2003 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2005 /* Called when we need to transmit (a) frame(s) from mac80211 */
2007 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2008 tids, more_data, false);
2012 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2013 struct ieee80211_sta *sta, u16 tids,
2015 enum ieee80211_frame_release_type reason,
2018 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2020 /* Called when we need to transmit (a) frame(s) from agg queue */
2022 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2023 tids, more_data, true);
2026 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2027 struct ieee80211_vif *vif,
2028 enum sta_notify_cmd cmd,
2029 struct ieee80211_sta *sta)
2031 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2032 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2036 case STA_NOTIFY_SLEEP:
2037 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2038 ieee80211_sta_block_awake(hw, sta, true);
2039 spin_lock_bh(&mvmsta->lock);
2040 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2041 struct iwl_mvm_tid_data *tid_data;
2043 tid_data = &mvmsta->tid_data[tid];
2044 if (tid_data->state != IWL_AGG_ON &&
2045 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2047 if (iwl_mvm_tid_queued(tid_data) == 0)
2049 ieee80211_sta_set_buffered(sta, tid, true);
2051 spin_unlock_bh(&mvmsta->lock);
2053 * The fw updates the STA to be asleep. Tx packets on the Tx
2054 * queues to this station will not be transmitted. The fw will
2055 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2058 case STA_NOTIFY_AWAKE:
2059 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2061 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2068 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2069 struct ieee80211_vif *vif,
2070 struct ieee80211_sta *sta)
2072 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2073 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2076 * This is called before mac80211 does RCU synchronisation,
2077 * so here we already invalidate our internal RCU-protected
2078 * station pointer. The rest of the code will thus no longer
2079 * be able to find the station this way, and we don't rely
2080 * on further RCU synchronisation after the sta_state()
2081 * callback deleted the station.
2083 mutex_lock(&mvm->mutex);
2084 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2085 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2087 mutex_unlock(&mvm->mutex);
2090 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2091 struct ieee80211_vif *vif,
2092 struct ieee80211_sta *sta,
2093 enum ieee80211_sta_state old_state,
2094 enum ieee80211_sta_state new_state)
2096 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2097 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2100 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2101 sta->addr, old_state, new_state);
2103 /* this would be a mac80211 bug ... but don't crash */
2104 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2107 /* if a STA is being removed, reuse its ID */
2108 flush_work(&mvm->sta_drained_wk);
2110 mutex_lock(&mvm->mutex);
2111 if (old_state == IEEE80211_STA_NOTEXIST &&
2112 new_state == IEEE80211_STA_NONE) {
2114 * Firmware bug - it'll crash if the beacon interval is less
2115 * than 16. We can't avoid connecting at all, so refuse the
2116 * station state change, this will cause mac80211 to abandon
2117 * attempts to connect to this AP, and eventually wpa_s will
2118 * blacklist the AP...
2120 if (vif->type == NL80211_IFTYPE_STATION &&
2121 vif->bss_conf.beacon_int < 16) {
2123 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2124 sta->addr, vif->bss_conf.beacon_int);
2131 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2132 IWL_MVM_TDLS_STA_COUNT ||
2133 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2134 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2139 ret = iwl_mvm_add_sta(mvm, vif, sta);
2140 if (sta->tdls && ret == 0)
2141 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2142 } else if (old_state == IEEE80211_STA_NONE &&
2143 new_state == IEEE80211_STA_AUTH) {
2145 * EBS may be disabled due to previous failures reported by FW.
2146 * Reset EBS status here assuming environment has been changed.
2148 mvm->last_ebs_successful = true;
2150 } else if (old_state == IEEE80211_STA_AUTH &&
2151 new_state == IEEE80211_STA_ASSOC) {
2152 ret = iwl_mvm_update_sta(mvm, vif, sta);
2154 iwl_mvm_rs_rate_init(mvm, sta,
2155 mvmvif->phy_ctxt->channel->band,
2157 } else if (old_state == IEEE80211_STA_ASSOC &&
2158 new_state == IEEE80211_STA_AUTHORIZED) {
2160 /* we don't support TDLS during DCM */
2161 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2162 iwl_mvm_teardown_tdls_peers(mvm);
2164 /* enable beacon filtering */
2165 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2167 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2168 new_state == IEEE80211_STA_ASSOC) {
2169 /* disable beacon filtering */
2170 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2172 } else if (old_state == IEEE80211_STA_ASSOC &&
2173 new_state == IEEE80211_STA_AUTH) {
2175 } else if (old_state == IEEE80211_STA_AUTH &&
2176 new_state == IEEE80211_STA_NONE) {
2178 } else if (old_state == IEEE80211_STA_NONE &&
2179 new_state == IEEE80211_STA_NOTEXIST) {
2180 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2182 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2187 mutex_unlock(&mvm->mutex);
2189 if (sta->tdls && ret == 0) {
2190 if (old_state == IEEE80211_STA_NOTEXIST &&
2191 new_state == IEEE80211_STA_NONE)
2192 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2193 else if (old_state == IEEE80211_STA_NONE &&
2194 new_state == IEEE80211_STA_NOTEXIST)
2195 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2201 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2203 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2205 mvm->rts_threshold = value;
2210 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2211 struct ieee80211_vif *vif,
2212 struct ieee80211_sta *sta, u32 changed)
2214 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2216 if (vif->type == NL80211_IFTYPE_STATION &&
2217 changed & IEEE80211_RC_NSS_CHANGED)
2218 iwl_mvm_sf_update(mvm, vif, false);
2221 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2222 struct ieee80211_vif *vif, u16 ac,
2223 const struct ieee80211_tx_queue_params *params)
2225 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2226 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2228 mvmvif->queue_params[ac] = *params;
2231 * No need to update right away, we'll get BSS_CHANGED_QOS
2232 * The exception is P2P_DEVICE interface which needs immediate update.
2234 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2237 mutex_lock(&mvm->mutex);
2238 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2239 mutex_unlock(&mvm->mutex);
2245 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2246 struct ieee80211_vif *vif)
2248 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2249 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2250 200 + vif->bss_conf.beacon_int);
2251 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2252 100 + vif->bss_conf.beacon_int);
2254 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2258 * iwl_mvm_protect_session() reads directly from the device
2259 * (the system time), so make sure it is available.
2261 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2264 mutex_lock(&mvm->mutex);
2265 /* Try really hard to protect the session and hear a beacon */
2266 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2267 mutex_unlock(&mvm->mutex);
2269 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2272 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2273 struct ieee80211_vif *vif,
2274 struct cfg80211_sched_scan_request *req,
2275 struct ieee80211_scan_ies *ies)
2277 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2280 if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2281 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2286 mutex_lock(&mvm->mutex);
2288 /* Newest FW fixes sched scan while connected on another interface */
2289 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2290 if (!vif->bss_conf.idle) {
2294 } else if (!iwl_mvm_is_idle(mvm)) {
2299 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2304 ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
2306 mvm->scan_status = IWL_MVM_SCAN_NONE;
2309 mutex_unlock(&mvm->mutex);
2313 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2314 struct ieee80211_vif *vif)
2316 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2319 mutex_lock(&mvm->mutex);
2320 ret = iwl_mvm_scan_offload_stop(mvm, false);
2321 mutex_unlock(&mvm->mutex);
2322 iwl_mvm_wait_for_async_handlers(mvm);
2328 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2329 enum set_key_cmd cmd,
2330 struct ieee80211_vif *vif,
2331 struct ieee80211_sta *sta,
2332 struct ieee80211_key_conf *key)
2334 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2337 if (iwlwifi_mod_params.sw_crypto) {
2338 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2342 switch (key->cipher) {
2343 case WLAN_CIPHER_SUITE_TKIP:
2344 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2346 case WLAN_CIPHER_SUITE_CCMP:
2347 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2349 case WLAN_CIPHER_SUITE_AES_CMAC:
2350 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2352 case WLAN_CIPHER_SUITE_WEP40:
2353 case WLAN_CIPHER_SUITE_WEP104:
2354 /* For non-client mode, only use WEP keys for TX as we probably
2355 * don't have a station yet anyway and would then have to keep
2356 * track of the keys, linking them to each of the clients/peers
2357 * as they appear. For now, don't do that, for performance WEP
2358 * offload doesn't really matter much, but we need it for some
2359 * other offload features in client mode.
2361 if (vif->type != NL80211_IFTYPE_STATION)
2365 /* currently FW supports only one optional cipher scheme */
2366 if (hw->n_cipher_schemes &&
2367 hw->cipher_schemes->cipher == key->cipher)
2368 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2373 mutex_lock(&mvm->mutex);
2377 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2378 vif->type == NL80211_IFTYPE_AP) && !sta) {
2380 * GTK on AP interface is a TX-only key, return 0;
2381 * on IBSS they're per-station and because we're lazy
2382 * we don't support them for RX, so do the same.
2385 key->hw_key_idx = STA_KEY_IDX_INVALID;
2389 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2390 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2392 IWL_WARN(mvm, "set key failed\n");
2394 * can't add key for RX, but we don't need it
2395 * in the device for TX so still return 0
2397 key->hw_key_idx = STA_KEY_IDX_INVALID;
2403 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2408 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2409 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2415 mutex_unlock(&mvm->mutex);
2419 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2420 struct ieee80211_vif *vif,
2421 struct ieee80211_key_conf *keyconf,
2422 struct ieee80211_sta *sta,
2423 u32 iv32, u16 *phase1key)
2425 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2427 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2430 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2434 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2435 struct iwl_rx_packet *pkt, void *data)
2437 struct iwl_mvm *mvm =
2438 container_of(notif_wait, struct iwl_mvm, notif_wait);
2439 struct iwl_hs20_roc_res *resp;
2440 int resp_len = iwl_rx_packet_payload_len(pkt);
2441 struct iwl_mvm_time_event_data *te_data = data;
2443 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2446 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2447 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2451 resp = (void *)pkt->data;
2454 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2455 resp->status, resp->event_unique_id);
2457 te_data->uid = le32_to_cpu(resp->event_unique_id);
2458 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2461 spin_lock_bh(&mvm->time_event_lock);
2462 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2463 spin_unlock_bh(&mvm->time_event_lock);
2468 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2469 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2470 struct ieee80211_channel *channel,
2471 struct ieee80211_vif *vif,
2474 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2475 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2476 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2477 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2478 struct iwl_notification_wait wait_time_event;
2479 struct iwl_hs20_roc_req aux_roc_req = {
2480 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2482 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2483 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2484 /* Set the channel info data */
2485 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2486 PHY_BAND_24 : PHY_BAND_5,
2487 .channel_info.channel = channel->hw_value,
2488 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2489 /* Set the time and duration */
2490 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2491 .apply_time_max_delay =
2492 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2493 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2496 /* Set the node address */
2497 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2499 lockdep_assert_held(&mvm->mutex);
2501 spin_lock_bh(&mvm->time_event_lock);
2503 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2504 spin_unlock_bh(&mvm->time_event_lock);
2509 te_data->duration = duration;
2510 te_data->id = HOT_SPOT_CMD;
2512 spin_unlock_bh(&mvm->time_event_lock);
2515 * Use a notification wait, which really just processes the
2516 * command response and doesn't wait for anything, in order
2517 * to be able to process the response and get the UID inside
2518 * the RX path. Using CMD_WANT_SKB doesn't work because it
2519 * stores the buffer and then wakes up this thread, by which
2520 * time another notification (that the time event started)
2521 * might already be processed unsuccessfully.
2523 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2524 time_event_response,
2525 ARRAY_SIZE(time_event_response),
2526 iwl_mvm_rx_aux_roc, te_data);
2528 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2532 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2533 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2537 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2538 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2539 /* should never fail */
2544 spin_lock_bh(&mvm->time_event_lock);
2545 iwl_mvm_te_clear_data(mvm, te_data);
2546 spin_unlock_bh(&mvm->time_event_lock);
2552 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2553 struct ieee80211_vif *vif,
2554 struct ieee80211_channel *channel,
2556 enum ieee80211_roc_type type)
2558 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2559 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2560 struct cfg80211_chan_def chandef;
2561 struct iwl_mvm_phy_ctxt *phy_ctxt;
2564 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2567 mutex_lock(&mvm->mutex);
2569 switch (vif->type) {
2570 case NL80211_IFTYPE_STATION:
2571 /* Use aux roc framework (HS20) */
2572 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2575 case NL80211_IFTYPE_P2P_DEVICE:
2579 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2584 for (i = 0; i < NUM_PHY_CTX; i++) {
2585 phy_ctxt = &mvm->phy_ctxts[i];
2586 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2589 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2591 * Unbind the P2P_DEVICE from the current PHY context,
2592 * and if the PHY context is not used remove it.
2594 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2595 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2598 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2600 /* Bind the P2P_DEVICE to the current PHY Context */
2601 mvmvif->phy_ctxt = phy_ctxt;
2603 ret = iwl_mvm_binding_add_vif(mvm, vif);
2604 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2607 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2608 goto schedule_time_event;
2612 /* Need to update the PHY context only if the ROC channel changed */
2613 if (channel == mvmvif->phy_ctxt->channel)
2614 goto schedule_time_event;
2616 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2619 * Change the PHY context configuration as it is currently referenced
2620 * only by the P2P Device MAC
2622 if (mvmvif->phy_ctxt->ref == 1) {
2623 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2629 * The PHY context is shared with other MACs. Need to remove the
2630 * P2P Device from the binding, allocate an new PHY context and
2631 * create a new binding
2633 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2639 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2642 IWL_ERR(mvm, "Failed to change PHY context\n");
2646 /* Unbind the P2P_DEVICE from the current PHY context */
2647 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2648 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2651 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2653 /* Bind the P2P_DEVICE to the new allocated PHY context */
2654 mvmvif->phy_ctxt = phy_ctxt;
2656 ret = iwl_mvm_binding_add_vif(mvm, vif);
2657 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2660 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2663 schedule_time_event:
2664 /* Schedule the time events */
2665 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2668 mutex_unlock(&mvm->mutex);
2669 IWL_DEBUG_MAC80211(mvm, "leave\n");
2673 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2675 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2677 IWL_DEBUG_MAC80211(mvm, "enter\n");
2679 mutex_lock(&mvm->mutex);
2680 iwl_mvm_stop_roc(mvm);
2681 mutex_unlock(&mvm->mutex);
2683 IWL_DEBUG_MAC80211(mvm, "leave\n");
2687 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2688 struct ieee80211_chanctx_conf *ctx)
2690 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2691 struct iwl_mvm_phy_ctxt *phy_ctxt;
2694 lockdep_assert_held(&mvm->mutex);
2696 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2698 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2704 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2705 ctx->rx_chains_static,
2706 ctx->rx_chains_dynamic);
2708 IWL_ERR(mvm, "Failed to add PHY context\n");
2712 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2713 *phy_ctxt_id = phy_ctxt->id;
2718 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2719 struct ieee80211_chanctx_conf *ctx)
2721 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2724 mutex_lock(&mvm->mutex);
2725 ret = __iwl_mvm_add_chanctx(mvm, ctx);
2726 mutex_unlock(&mvm->mutex);
2731 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2732 struct ieee80211_chanctx_conf *ctx)
2734 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2735 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2737 lockdep_assert_held(&mvm->mutex);
2739 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2742 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2743 struct ieee80211_chanctx_conf *ctx)
2745 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2747 mutex_lock(&mvm->mutex);
2748 __iwl_mvm_remove_chanctx(mvm, ctx);
2749 mutex_unlock(&mvm->mutex);
2752 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2753 struct ieee80211_chanctx_conf *ctx,
2756 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2757 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2758 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2760 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2761 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2762 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2763 IEEE80211_CHANCTX_CHANGE_RADAR |
2764 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2765 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2766 phy_ctxt->ref, changed))
2769 mutex_lock(&mvm->mutex);
2770 iwl_mvm_bt_coex_vif_change(mvm);
2771 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2772 ctx->rx_chains_static,
2773 ctx->rx_chains_dynamic);
2774 mutex_unlock(&mvm->mutex);
2777 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2778 struct ieee80211_vif *vif,
2779 struct ieee80211_chanctx_conf *ctx,
2780 bool switching_chanctx)
2782 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2783 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2784 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2787 lockdep_assert_held(&mvm->mutex);
2789 mvmvif->phy_ctxt = phy_ctxt;
2791 switch (vif->type) {
2792 case NL80211_IFTYPE_AP:
2793 /* Unless it's a CSA flow we have nothing to do here */
2794 if (vif->csa_active) {
2795 mvmvif->ap_ibss_active = true;
2798 case NL80211_IFTYPE_ADHOC:
2800 * The AP binding flow is handled as part of the start_ap flow
2801 * (in bss_info_changed), similarly for IBSS.
2805 case NL80211_IFTYPE_STATION:
2807 case NL80211_IFTYPE_MONITOR:
2808 /* always disable PS when a monitor interface is active */
2809 mvmvif->ps_disabled = true;
2816 ret = iwl_mvm_binding_add_vif(mvm, vif);
2821 * Power state must be updated before quotas,
2822 * otherwise fw will complain.
2824 iwl_mvm_power_update_mac(mvm);
2826 /* Setting the quota at this stage is only required for monitor
2827 * interfaces. For the other types, the bss_info changed flow
2828 * will handle quota settings.
2830 if (vif->type == NL80211_IFTYPE_MONITOR) {
2831 mvmvif->monitor_active = true;
2832 ret = iwl_mvm_update_quotas(mvm, NULL);
2834 goto out_remove_binding;
2837 /* Handle binding during CSA */
2838 if ((vif->type == NL80211_IFTYPE_AP) ||
2839 (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) {
2840 iwl_mvm_update_quotas(mvm, NULL);
2841 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2844 if (vif->csa_active && vif->type == NL80211_IFTYPE_STATION) {
2845 struct iwl_mvm_sta *mvmsta;
2847 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
2850 if (WARN_ON(!mvmsta))
2853 /* TODO: only re-enable after the first beacon */
2854 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
2860 iwl_mvm_binding_remove_vif(mvm, vif);
2861 iwl_mvm_power_update_mac(mvm);
2864 mvmvif->phy_ctxt = NULL;
2867 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2868 struct ieee80211_vif *vif,
2869 struct ieee80211_chanctx_conf *ctx)
2871 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2874 mutex_lock(&mvm->mutex);
2875 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
2876 mutex_unlock(&mvm->mutex);
2881 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2882 struct ieee80211_vif *vif,
2883 struct ieee80211_chanctx_conf *ctx,
2884 bool switching_chanctx)
2886 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2887 struct ieee80211_vif *disabled_vif = NULL;
2888 struct iwl_mvm_sta *mvmsta;
2890 lockdep_assert_held(&mvm->mutex);
2892 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2894 switch (vif->type) {
2895 case NL80211_IFTYPE_ADHOC:
2897 case NL80211_IFTYPE_MONITOR:
2898 mvmvif->monitor_active = false;
2899 mvmvif->ps_disabled = false;
2901 case NL80211_IFTYPE_AP:
2902 /* This part is triggered only during CSA */
2903 if (!vif->csa_active || !mvmvif->ap_ibss_active)
2906 /* Set CS bit on all the stations */
2907 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2909 /* Save blocked iface, the timeout is set on the next beacon */
2910 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2912 mvmvif->ap_ibss_active = false;
2914 case NL80211_IFTYPE_STATION:
2915 if (!switching_chanctx)
2920 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
2923 if (!WARN_ON(!mvmsta))
2924 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);
2926 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
2932 iwl_mvm_update_quotas(mvm, disabled_vif);
2933 iwl_mvm_binding_remove_vif(mvm, vif);
2936 mvmvif->phy_ctxt = NULL;
2937 iwl_mvm_power_update_mac(mvm);
2940 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2941 struct ieee80211_vif *vif,
2942 struct ieee80211_chanctx_conf *ctx)
2944 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2946 mutex_lock(&mvm->mutex);
2947 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
2948 mutex_unlock(&mvm->mutex);
2951 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
2952 struct ieee80211_vif_chanctx_switch *vifs,
2954 enum ieee80211_chanctx_switch_mode mode)
2956 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2959 /* we only support SWAP_CONTEXTS and with a single-vif right now */
2960 if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1)
2963 mutex_lock(&mvm->mutex);
2964 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
2965 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2967 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2969 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2973 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2977 "failed to assign new_ctx during channel switch\n");
2981 /* we don't support TDLS during DCM - can be caused by channel switch */
2982 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2983 iwl_mvm_teardown_tdls_peers(mvm);
2988 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
2991 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx);
2993 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
2997 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3000 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3007 /* things keep failing, better restart the hw */
3008 iwl_mvm_nic_restart(mvm, false);
3011 mutex_unlock(&mvm->mutex);
3015 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3016 struct ieee80211_sta *sta,
3019 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3020 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
3022 if (!mvm_sta || !mvm_sta->vif) {
3023 IWL_ERR(mvm, "Station is not associated to a vif\n");
3027 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3030 #ifdef CONFIG_NL80211_TESTMODE
3031 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3032 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3033 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3034 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3037 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3038 struct ieee80211_vif *vif,
3039 void *data, int len)
3041 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3045 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3049 if (!tb[IWL_MVM_TM_ATTR_CMD])
3052 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3053 case IWL_MVM_TM_CMD_SET_NOA:
3054 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3055 !vif->bss_conf.enable_beacon ||
3056 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3059 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3060 if (noa_duration >= vif->bss_conf.beacon_int)
3063 mvm->noa_duration = noa_duration;
3066 return iwl_mvm_update_quotas(mvm, NULL);
3067 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3068 /* must be associated client vif - ignore authorized */
3069 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3070 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3071 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3074 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3075 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3076 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3082 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3083 struct ieee80211_vif *vif,
3084 void *data, int len)
3086 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3089 mutex_lock(&mvm->mutex);
3090 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3091 mutex_unlock(&mvm->mutex);
3097 static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
3098 struct ieee80211_vif *vif,
3099 struct cfg80211_chan_def *chandef)
3101 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3102 struct ieee80211_vif *csa_vif;
3104 mutex_lock(&mvm->mutex);
3106 csa_vif = rcu_dereference_protected(mvm->csa_vif,
3107 lockdep_is_held(&mvm->mutex));
3108 if (WARN(csa_vif && csa_vif->csa_active,
3109 "Another CSA is already in progress"))
3112 IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
3113 chandef->center_freq1);
3114 rcu_assign_pointer(mvm->csa_vif, vif);
3117 mutex_unlock(&mvm->mutex);
3120 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3121 struct ieee80211_vif *vif, u32 queues, bool drop)
3123 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3124 struct iwl_mvm_vif *mvmvif;
3125 struct iwl_mvm_sta *mvmsta;
3126 struct ieee80211_sta *sta;
3130 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3133 mutex_lock(&mvm->mutex);
3134 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3136 /* flush the AP-station and all TDLS peers */
3137 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3138 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3139 lockdep_is_held(&mvm->mutex));
3140 if (IS_ERR_OR_NULL(sta))
3143 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3144 if (mvmsta->vif != vif)
3147 /* make sure only TDLS peers or the AP are flushed */
3148 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3150 msk |= mvmsta->tfd_queue_msk;
3154 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3155 IWL_ERR(mvm, "flush request fail\n");
3156 mutex_unlock(&mvm->mutex);
3158 mutex_unlock(&mvm->mutex);
3160 /* this can take a while, and we may need/want other operations
3161 * to succeed while doing this, so do it without the mutex held
3163 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3167 const struct ieee80211_ops iwl_mvm_hw_ops = {
3168 .tx = iwl_mvm_mac_tx,
3169 .ampdu_action = iwl_mvm_mac_ampdu_action,
3170 .start = iwl_mvm_mac_start,
3171 .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3172 .stop = iwl_mvm_mac_stop,
3173 .add_interface = iwl_mvm_mac_add_interface,
3174 .remove_interface = iwl_mvm_mac_remove_interface,
3175 .config = iwl_mvm_mac_config,
3176 .prepare_multicast = iwl_mvm_prepare_multicast,
3177 .configure_filter = iwl_mvm_configure_filter,
3178 .bss_info_changed = iwl_mvm_bss_info_changed,
3179 .hw_scan = iwl_mvm_mac_hw_scan,
3180 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3181 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3182 .sta_state = iwl_mvm_mac_sta_state,
3183 .sta_notify = iwl_mvm_mac_sta_notify,
3184 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3185 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3186 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3187 .sta_rc_update = iwl_mvm_sta_rc_update,
3188 .conf_tx = iwl_mvm_mac_conf_tx,
3189 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3190 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3191 .flush = iwl_mvm_mac_flush,
3192 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3193 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3194 .set_key = iwl_mvm_mac_set_key,
3195 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3196 .remain_on_channel = iwl_mvm_roc,
3197 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3198 .add_chanctx = iwl_mvm_add_chanctx,
3199 .remove_chanctx = iwl_mvm_remove_chanctx,
3200 .change_chanctx = iwl_mvm_change_chanctx,
3201 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3202 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3203 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3205 .start_ap = iwl_mvm_start_ap_ibss,
3206 .stop_ap = iwl_mvm_stop_ap_ibss,
3207 .join_ibss = iwl_mvm_start_ap_ibss,
3208 .leave_ibss = iwl_mvm_stop_ap_ibss,
3210 .set_tim = iwl_mvm_set_tim,
3212 .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
3214 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3216 #ifdef CONFIG_PM_SLEEP
3218 .suspend = iwl_mvm_suspend,
3219 .resume = iwl_mvm_resume,
3220 .set_wakeup = iwl_mvm_set_wakeup,
3221 .set_rekey_data = iwl_mvm_set_rekey_data,
3222 #if IS_ENABLED(CONFIG_IPV6)
3223 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3225 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,