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.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
34 * All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *****************************************************************************/
63 #include <linux/kernel.h>
64 #include <linux/slab.h>
65 #include <linux/skbuff.h>
66 #include <linux/netdevice.h>
67 #include <linux/etherdevice.h>
69 #include <linux/if_arp.h>
70 #include <net/mac80211.h>
71 #include <net/ieee80211_radiotap.h>
74 #include "iwl-op-mode.h"
78 #include "time-event.h"
79 #include "iwl-eeprom-parse.h"
80 #include "fw-api-scan.h"
81 #include "iwl-phy-db.h"
83 #include "iwl-fw-error-dump.h"
86 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
89 .types = BIT(NL80211_IFTYPE_STATION),
93 .types = BIT(NL80211_IFTYPE_AP) |
94 BIT(NL80211_IFTYPE_P2P_CLIENT) |
95 BIT(NL80211_IFTYPE_P2P_GO),
99 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
103 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
105 .num_different_channels = 1,
107 .limits = iwl_mvm_limits,
108 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
112 #ifdef CONFIG_PM_SLEEP
113 static const struct nl80211_wowlan_tcp_data_token_feature
114 iwl_mvm_wowlan_tcp_token_feature = {
117 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
120 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
121 .tok = &iwl_mvm_wowlan_tcp_token_feature,
122 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
123 sizeof(struct ethhdr) -
124 sizeof(struct iphdr) -
125 sizeof(struct tcphdr),
126 .data_interval_max = 65535, /* __le16 in API */
127 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
128 sizeof(struct ethhdr) -
129 sizeof(struct iphdr) -
130 sizeof(struct tcphdr),
135 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
137 * Use the reserved field to indicate magic values.
138 * these values will only be used internally by the driver,
139 * and won't make it to the fw (reserved will be 0).
140 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
141 * be the vif's ip address. in case there is not a single
142 * ip address (0, or more than 1), this attribute will
144 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
145 * the LSB bytes of the vif's mac address
148 BC_FILTER_MAGIC_NONE = 0,
153 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
157 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
160 /* frame type - arp, hw type - ethernet */
162 BCAST_FILTER_OFFSET_PAYLOAD_START,
163 .offset = sizeof(rfc1042_header),
164 .val = cpu_to_be32(0x08060001),
165 .mask = cpu_to_be32(0xffffffff),
170 BCAST_FILTER_OFFSET_PAYLOAD_START,
171 .offset = sizeof(rfc1042_header) + 2 +
172 sizeof(struct arphdr) +
173 ETH_ALEN + sizeof(__be32) +
175 .mask = cpu_to_be32(0xffffffff),
176 /* mark it as special field */
177 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
182 /* dhcp offer bcast */
184 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
187 /* udp dest port - 68 (bootp client)*/
188 .offset_type = BCAST_FILTER_OFFSET_IP_END,
189 .offset = offsetof(struct udphdr, dest),
190 .val = cpu_to_be32(0x00440000),
191 .mask = cpu_to_be32(0xffff0000),
194 /* dhcp - lsb bytes of client hw address */
195 .offset_type = BCAST_FILTER_OFFSET_IP_END,
197 .mask = cpu_to_be32(0xffffffff),
198 /* mark it as special field */
199 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
203 /* last filter must be empty */
208 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
210 if (!iwl_mvm_is_d0i3_supported(mvm))
213 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
214 spin_lock_bh(&mvm->refs_lock);
215 mvm->refs[ref_type]++;
216 spin_unlock_bh(&mvm->refs_lock);
217 iwl_trans_ref(mvm->trans);
220 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
222 if (!iwl_mvm_is_d0i3_supported(mvm))
225 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
226 spin_lock_bh(&mvm->refs_lock);
227 WARN_ON(!mvm->refs[ref_type]--);
228 spin_unlock_bh(&mvm->refs_lock);
229 iwl_trans_unref(mvm->trans);
232 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
233 enum iwl_mvm_ref_type except_ref)
237 if (!iwl_mvm_is_d0i3_supported(mvm))
240 spin_lock_bh(&mvm->refs_lock);
241 for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
242 if (except_ref == i || !mvm->refs[i])
245 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
247 for (j = 0; j < mvm->refs[i]; j++)
248 iwl_trans_unref(mvm->trans);
251 spin_unlock_bh(&mvm->refs_lock);
254 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
256 iwl_mvm_ref(mvm, ref_type);
258 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
259 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
262 iwl_mvm_unref(mvm, ref_type);
269 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
273 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
274 for (i = 0; i < NUM_PHY_CTX; i++) {
275 mvm->phy_ctxts[i].id = i;
276 mvm->phy_ctxts[i].ref = 0;
280 static int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
282 /* we create the 802.11 header and SSID element */
283 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID)
284 return mvm->fw->ucode_capa.max_probe_length - 24 - 2;
285 return mvm->fw->ucode_capa.max_probe_length - 24 - 34;
288 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
290 struct ieee80211_hw *hw = mvm->hw;
293 /* Tell mac80211 our characteristics */
294 hw->flags = IEEE80211_HW_SIGNAL_DBM |
295 IEEE80211_HW_SPECTRUM_MGMT |
296 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
297 IEEE80211_HW_QUEUE_CONTROL |
298 IEEE80211_HW_WANT_MONITOR_VIF |
299 IEEE80211_HW_SUPPORTS_PS |
300 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
301 IEEE80211_HW_AMPDU_AGGREGATION |
302 IEEE80211_HW_TIMING_BEACON_ONLY |
303 IEEE80211_HW_CONNECTION_MONITOR |
304 IEEE80211_HW_CHANCTX_STA_CSA |
305 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
306 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
308 hw->queues = mvm->first_agg_queue;
309 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
310 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
311 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
312 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
313 hw->rate_control_algorithm = "iwl-mvm-rs";
316 * Enable 11w if advertised by firmware and software crypto
317 * is not enabled (as the firmware will interpret some mgmt
318 * packets, so enabling it with software crypto isn't safe)
320 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
321 !iwlwifi_mod_params.sw_crypto)
322 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
324 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
325 IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 &&
326 !iwlwifi_mod_params.uapsd_disable) {
327 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
328 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
329 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
332 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
333 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
335 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
336 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
337 hw->chanctx_data_size = sizeof(u16);
339 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
340 BIT(NL80211_IFTYPE_P2P_CLIENT) |
341 BIT(NL80211_IFTYPE_AP) |
342 BIT(NL80211_IFTYPE_P2P_GO) |
343 BIT(NL80211_IFTYPE_P2P_DEVICE) |
344 BIT(NL80211_IFTYPE_ADHOC);
346 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
347 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
348 REGULATORY_DISABLE_BEACON_HINTS;
350 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
351 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
353 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW)
354 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
356 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
357 hw->wiphy->n_iface_combinations =
358 ARRAY_SIZE(iwl_mvm_iface_combinations);
360 hw->wiphy->max_remain_on_channel_duration = 10000;
361 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
363 /* Extract MAC address */
364 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
365 hw->wiphy->addresses = mvm->addresses;
366 hw->wiphy->n_addresses = 1;
368 /* Extract additional MAC addresses if available */
369 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
370 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
372 for (i = 1; i < num_mac; i++) {
373 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
375 mvm->addresses[i].addr[5]++;
376 hw->wiphy->n_addresses++;
379 iwl_mvm_reset_phy_ctxts(mvm);
381 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
383 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
385 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
386 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
387 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
388 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
389 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
390 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
392 hw->wiphy->hw_version = mvm->trans->hw_id;
394 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
395 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
397 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
399 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
400 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
401 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
402 /* we create the 802.11 header and zero length SSID IE. */
403 hw->wiphy->max_sched_scan_ie_len = SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
405 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
406 NL80211_FEATURE_LOW_PRIORITY_SCAN |
407 NL80211_FEATURE_P2P_GO_OPPPS;
409 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
411 /* currently FW API supports only one optional cipher scheme */
412 if (mvm->fw->cs[0].cipher) {
413 mvm->hw->n_cipher_schemes = 1;
414 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
417 #ifdef CONFIG_PM_SLEEP
418 if (iwl_mvm_is_d0i3_supported(mvm) &&
419 device_can_wakeup(mvm->trans->dev)) {
420 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
421 hw->wiphy->wowlan = &mvm->wowlan;
422 } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
423 mvm->trans->ops->d3_suspend &&
424 mvm->trans->ops->d3_resume &&
425 device_can_wakeup(mvm->trans->dev)) {
426 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
427 WIPHY_WOWLAN_DISCONNECT |
428 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
429 WIPHY_WOWLAN_RFKILL_RELEASE;
430 if (!iwlwifi_mod_params.sw_crypto)
431 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
432 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
433 WIPHY_WOWLAN_4WAY_HANDSHAKE;
435 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
436 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
437 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
438 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
439 hw->wiphy->wowlan = &mvm->wowlan;
443 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
444 /* assign default bcast filtering configuration */
445 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
448 ret = iwl_mvm_leds_init(mvm);
452 ret = ieee80211_register_hw(mvm->hw);
454 iwl_mvm_leds_exit(mvm);
459 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
460 struct ieee80211_sta *sta,
463 struct iwl_mvm_sta *mvmsta;
467 * double check the IN_D0I3 flag both before and after
468 * taking the spinlock, in order to prevent taking
469 * the spinlock when not needed.
471 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
474 spin_lock(&mvm->d0i3_tx_lock);
476 * testing the flag again ensures the skb dequeue
477 * loop (on d0i3 exit) hasn't run yet.
479 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
482 mvmsta = iwl_mvm_sta_from_mac80211(sta);
483 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
484 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
487 __skb_queue_tail(&mvm->d0i3_tx, skb);
488 ieee80211_stop_queues(mvm->hw);
491 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
492 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
496 spin_unlock(&mvm->d0i3_tx_lock);
500 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
501 struct ieee80211_tx_control *control,
504 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
505 struct ieee80211_sta *sta = control->sta;
506 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
507 struct ieee80211_hdr *hdr = (void *)skb->data;
509 if (iwl_mvm_is_radio_killed(mvm)) {
510 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
514 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
515 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
518 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
519 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
520 ieee80211_is_mgmt(hdr->frame_control) &&
521 !ieee80211_is_deauth(hdr->frame_control) &&
522 !ieee80211_is_disassoc(hdr->frame_control) &&
523 !ieee80211_is_action(hdr->frame_control)))
527 if (iwl_mvm_defer_tx(mvm, sta, skb))
529 if (iwl_mvm_tx_skb(mvm, skb, sta))
534 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
538 ieee80211_free_txskb(hw, skb);
541 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
543 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
548 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
550 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
552 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
555 /* enabled by default */
559 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
560 struct ieee80211_vif *vif,
561 enum ieee80211_ampdu_mlme_action action,
562 struct ieee80211_sta *sta, u16 tid,
563 u16 *ssn, u8 buf_size)
565 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
567 bool tx_agg_ref = false;
569 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
570 sta->addr, tid, action);
572 if (!(mvm->nvm_data->sku_cap_11n_enable))
575 /* return from D0i3 before starting a new Tx aggregation */
577 case IEEE80211_AMPDU_TX_START:
578 case IEEE80211_AMPDU_TX_STOP_CONT:
579 case IEEE80211_AMPDU_TX_STOP_FLUSH:
580 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
581 case IEEE80211_AMPDU_TX_OPERATIONAL:
583 * for tx start, wait synchronously until D0i3 exit to
584 * get the correct sequence number for the tid.
585 * additionally, some other ampdu actions use direct
586 * target access, which is not handled automatically
587 * by the trans layer (unlike commands), so wait for
588 * d0i3 exit in these cases as well.
590 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
600 mutex_lock(&mvm->mutex);
603 case IEEE80211_AMPDU_RX_START:
604 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
608 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
610 case IEEE80211_AMPDU_RX_STOP:
611 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
613 case IEEE80211_AMPDU_TX_START:
614 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
618 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
620 case IEEE80211_AMPDU_TX_STOP_CONT:
621 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
623 case IEEE80211_AMPDU_TX_STOP_FLUSH:
624 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
625 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
627 case IEEE80211_AMPDU_TX_OPERATIONAL:
628 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
635 mutex_unlock(&mvm->mutex);
638 * If the tid is marked as started, we won't use it for offloaded
639 * traffic on the next D0i3 entry. It's safe to unref.
642 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
647 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
648 struct ieee80211_vif *vif)
650 struct iwl_mvm *mvm = data;
651 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
653 mvmvif->uploaded = false;
654 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
656 /* does this make sense at all? */
659 spin_lock_bh(&mvm->time_event_lock);
660 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
661 spin_unlock_bh(&mvm->time_event_lock);
663 mvmvif->phy_ctxt = NULL;
664 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
667 #ifdef CONFIG_IWLWIFI_DEBUGFS
668 static void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
670 struct iwl_fw_error_dump_file *dump_file;
671 struct iwl_fw_error_dump_data *dump_data;
672 struct iwl_fw_error_dump_info *dump_info;
673 struct iwl_mvm_dump_ptrs *fw_error_dump;
674 const struct fw_img *img;
675 u32 sram_len, sram_ofs;
676 u32 file_len, rxf_len;
680 lockdep_assert_held(&mvm->mutex);
682 if (mvm->fw_error_dump)
685 fw_error_dump = kzalloc(sizeof(*mvm->fw_error_dump), GFP_KERNEL);
689 img = &mvm->fw->img[mvm->cur_ucode];
690 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
691 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
693 /* reading buffer size */
694 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
695 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
697 /* the register holds the value divided by 128 */
698 rxf_len = rxf_len << 7;
700 file_len = sizeof(*dump_file) +
701 sizeof(*dump_data) * 3 +
706 dump_file = vzalloc(file_len);
708 kfree(fw_error_dump);
712 fw_error_dump->op_mode_ptr = dump_file;
714 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
715 dump_data = (void *)dump_file->data;
717 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
718 dump_data->len = cpu_to_le32(sizeof(*dump_info));
719 dump_info = (void *) dump_data->data;
720 dump_info->device_family =
721 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
722 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
723 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
724 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
725 sizeof(dump_info->fw_human_readable));
726 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
727 sizeof(dump_info->dev_human_readable));
728 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
729 sizeof(dump_info->bus_human_readable));
731 dump_data = iwl_fw_error_next_data(dump_data);
732 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
733 dump_data->len = cpu_to_le32(rxf_len);
735 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
736 u32 *rxf = (void *)dump_data->data;
739 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
740 iwl_trans_write_prph(mvm->trans,
741 RXF_LD_FENCE_OFFSET_ADDR,
743 rxf[i] = iwl_trans_read_prph(mvm->trans,
744 RXF_FIFO_RD_FENCE_ADDR);
746 iwl_trans_release_nic_access(mvm->trans, &flags);
749 dump_data = iwl_fw_error_next_data(dump_data);
750 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
751 dump_data->len = cpu_to_le32(sram_len);
752 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
755 fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
756 fw_error_dump->op_mode_len = file_len;
757 if (fw_error_dump->trans_ptr)
758 file_len += fw_error_dump->trans_ptr->len;
759 dump_file->file_len = cpu_to_le32(file_len);
760 mvm->fw_error_dump = fw_error_dump;
764 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
766 #ifdef CONFIG_IWLWIFI_DEBUGFS
767 static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL };
769 iwl_mvm_fw_error_dump(mvm);
771 /* notify the userspace about the error we had */
772 kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env);
775 iwl_trans_stop_device(mvm->trans);
777 mvm->scan_status = IWL_MVM_SCAN_NONE;
779 /* just in case one was running */
780 ieee80211_remain_on_channel_expired(mvm->hw);
782 ieee80211_iterate_active_interfaces_atomic(
783 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
784 iwl_mvm_cleanup_iterator, mvm);
786 mvm->p2p_device_vif = NULL;
787 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
789 iwl_mvm_reset_phy_ctxts(mvm);
790 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
791 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
792 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
793 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
794 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
795 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
796 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
797 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
799 ieee80211_wake_queues(mvm->hw);
801 /* cleanup all stale references (scan, roc), but keep the
802 * ucode_down ref until reconfig is complete */
803 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
806 mvm->rx_ba_sessions = 0;
809 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
811 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
814 mutex_lock(&mvm->mutex);
816 /* Clean up some internal and mac80211 state on restart */
817 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
818 iwl_mvm_restart_cleanup(mvm);
820 ret = iwl_mvm_up(mvm);
822 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
823 /* Something went wrong - we need to finish some cleanup
824 * that normally iwl_mvm_mac_restart_complete() below
827 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
828 iwl_mvm_d0i3_enable_tx(mvm, NULL);
831 mutex_unlock(&mvm->mutex);
836 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
838 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
841 mutex_lock(&mvm->mutex);
843 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
844 iwl_mvm_d0i3_enable_tx(mvm, NULL);
845 ret = iwl_mvm_update_quotas(mvm, NULL);
847 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
850 /* allow transport/FW low power modes */
851 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
853 mutex_unlock(&mvm->mutex);
856 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
858 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
860 flush_work(&mvm->d0i3_exit_work);
861 flush_work(&mvm->async_handlers_wk);
863 mutex_lock(&mvm->mutex);
865 /* disallow low power states when the FW is down */
866 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
868 /* async_handlers_wk is now blocked */
871 * The work item could be running or queued if the
872 * ROC time event stops just as we get here.
874 cancel_work_sync(&mvm->roc_done_wk);
876 iwl_trans_stop_device(mvm->trans);
878 iwl_mvm_async_handlers_purge(mvm);
879 /* async_handlers_list is empty and will stay empty: HW is stopped */
881 /* the fw is stopped, the aux sta is dead: clean up driver state */
882 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
884 mutex_unlock(&mvm->mutex);
887 * The worker might have been waiting for the mutex, let it run and
888 * discover that its list is now empty.
890 cancel_work_sync(&mvm->async_handlers_wk);
893 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
897 lockdep_assert_held(&mvm->mutex);
899 for (i = 0; i < NUM_PHY_CTX; i++)
900 if (!mvm->phy_ctxts[i].ref)
901 return &mvm->phy_ctxts[i];
903 IWL_ERR(mvm, "No available PHY context\n");
907 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
910 /* FW is in charge of regulatory enforcement */
911 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
912 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
913 .pwr_restriction = cpu_to_le16(tx_power),
916 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
917 sizeof(reduce_txpwr_cmd),
921 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
922 struct ieee80211_vif *vif)
924 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
925 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
929 * make sure D0i3 exit is completed, otherwise a target access
930 * during tx queue configuration could be done when still in
933 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
938 * Not much to do here. The stack will not allow interface
939 * types or combinations that we didn't advertise, so we
940 * don't really have to check the types.
943 mutex_lock(&mvm->mutex);
945 /* Allocate resources for the MAC context, and add it to the fw */
946 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
950 /* Counting number of interfaces is needed for legacy PM */
951 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
955 * The AP binding flow can be done only after the beacon
956 * template is configured (which happens only in the mac80211
957 * start_ap() flow), and adding the broadcast station can happen
958 * only after the binding.
959 * In addition, since modifying the MAC before adding a bcast
960 * station is not allowed by the FW, delay the adding of MAC context to
961 * the point where we can also add the bcast station.
962 * In short: there's not much we can do at this point, other than
963 * allocating resources :)
965 if (vif->type == NL80211_IFTYPE_AP ||
966 vif->type == NL80211_IFTYPE_ADHOC) {
967 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
968 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
970 ieee80211_vif_type_p2p(vif));
972 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
976 iwl_mvm_vif_dbgfs_register(mvm, vif);
980 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
984 ret = iwl_mvm_power_update_mac(mvm);
988 /* beacon filtering */
989 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
993 if (!mvm->bf_allowed_vif &&
994 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
995 mvm->bf_allowed_vif = mvmvif;
996 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
997 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1001 * P2P_DEVICE interface does not have a channel context assigned to it,
1002 * so a dedicated PHY context is allocated to it and the corresponding
1003 * MAC context is bound to it at this stage.
1005 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1007 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1008 if (!mvmvif->phy_ctxt) {
1013 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1014 ret = iwl_mvm_binding_add_vif(mvm, vif);
1018 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1022 /* Save a pointer to p2p device vif, so it can later be used to
1023 * update the p2p device MAC when a GO is started/stopped */
1024 mvm->p2p_device_vif = vif;
1027 iwl_mvm_vif_dbgfs_register(mvm, vif);
1031 iwl_mvm_binding_remove_vif(mvm, vif);
1033 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1035 if (mvm->bf_allowed_vif == mvmvif) {
1036 mvm->bf_allowed_vif = NULL;
1037 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1038 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1041 mvmvif->phy_ctxt = NULL;
1042 iwl_mvm_mac_ctxt_remove(mvm, vif);
1044 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1047 iwl_mvm_mac_ctxt_release(mvm, vif);
1049 mutex_unlock(&mvm->mutex);
1051 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1056 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1057 struct ieee80211_vif *vif)
1059 u32 tfd_msk = 0, ac;
1061 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1062 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
1063 tfd_msk |= BIT(vif->hw_queue[ac]);
1065 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
1066 tfd_msk |= BIT(vif->cab_queue);
1069 mutex_lock(&mvm->mutex);
1070 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1071 mutex_unlock(&mvm->mutex);
1074 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1076 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1077 * We assume here that all the packets sent to the OFFCHANNEL
1078 * queue are sent in ROC session.
1080 flush_work(&mvm->roc_done_wk);
1083 * By now, all the AC queues are empty. The AGG queues are
1084 * empty too. We already got all the Tx responses for all the
1085 * packets in the queues. The drain work can have been
1086 * triggered. Flush it.
1088 flush_work(&mvm->sta_drained_wk);
1092 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1093 struct ieee80211_vif *vif)
1095 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1096 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1098 iwl_mvm_prepare_mac_removal(mvm, vif);
1100 mutex_lock(&mvm->mutex);
1102 if (mvm->bf_allowed_vif == mvmvif) {
1103 mvm->bf_allowed_vif = NULL;
1104 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1105 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1108 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1111 * For AP/GO interface, the tear down of the resources allocated to the
1112 * interface is be handled as part of the stop_ap flow.
1114 if (vif->type == NL80211_IFTYPE_AP ||
1115 vif->type == NL80211_IFTYPE_ADHOC) {
1116 #ifdef CONFIG_NL80211_TESTMODE
1117 if (vif == mvm->noa_vif) {
1118 mvm->noa_vif = NULL;
1119 mvm->noa_duration = 0;
1122 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
1126 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1127 mvm->p2p_device_vif = NULL;
1128 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1129 iwl_mvm_binding_remove_vif(mvm, vif);
1130 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1131 mvmvif->phy_ctxt = NULL;
1134 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1137 iwl_mvm_power_update_mac(mvm);
1138 iwl_mvm_mac_ctxt_remove(mvm, vif);
1141 iwl_mvm_mac_ctxt_release(mvm, vif);
1142 mutex_unlock(&mvm->mutex);
1145 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1150 struct iwl_mvm_mc_iter_data {
1151 struct iwl_mvm *mvm;
1155 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1156 struct ieee80211_vif *vif)
1158 struct iwl_mvm_mc_iter_data *data = _data;
1159 struct iwl_mvm *mvm = data->mvm;
1160 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1163 /* if we don't have free ports, mcast frames will be dropped */
1164 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1167 if (vif->type != NL80211_IFTYPE_STATION ||
1168 !vif->bss_conf.assoc)
1171 cmd->port_id = data->port_id++;
1172 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1173 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1175 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1177 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1180 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1182 struct iwl_mvm_mc_iter_data iter_data = {
1186 lockdep_assert_held(&mvm->mutex);
1188 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1191 ieee80211_iterate_active_interfaces_atomic(
1192 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1193 iwl_mvm_mc_iface_iterator, &iter_data);
1196 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1197 struct netdev_hw_addr_list *mc_list)
1199 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1200 struct iwl_mcast_filter_cmd *cmd;
1201 struct netdev_hw_addr *addr;
1202 int addr_count = netdev_hw_addr_list_count(mc_list);
1203 bool pass_all = false;
1206 if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) {
1211 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1212 cmd = kzalloc(len, GFP_ATOMIC);
1218 return (u64)(unsigned long)cmd;
1221 netdev_hw_addr_list_for_each(addr, mc_list) {
1222 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1223 cmd->count, addr->addr);
1224 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1225 addr->addr, ETH_ALEN);
1229 return (u64)(unsigned long)cmd;
1232 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1233 unsigned int changed_flags,
1234 unsigned int *total_flags,
1237 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1238 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1240 mutex_lock(&mvm->mutex);
1242 /* replace previous configuration */
1243 kfree(mvm->mcast_filter_cmd);
1244 mvm->mcast_filter_cmd = cmd;
1249 iwl_mvm_recalc_multicast(mvm);
1251 mutex_unlock(&mvm->mutex);
1255 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1256 struct iwl_bcast_iter_data {
1257 struct iwl_mvm *mvm;
1258 struct iwl_bcast_filter_cmd *cmd;
1263 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1264 const struct iwl_fw_bcast_filter *in_filter,
1265 struct iwl_fw_bcast_filter *out_filter)
1267 struct iwl_fw_bcast_filter_attr *attr;
1270 memcpy(out_filter, in_filter, sizeof(*out_filter));
1272 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1273 attr = &out_filter->attrs[i];
1278 switch (attr->reserved1) {
1279 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1280 if (vif->bss_conf.arp_addr_cnt != 1) {
1285 attr->val = vif->bss_conf.arp_addr_list[0];
1287 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1288 attr->val = *(__be32 *)&vif->addr[2];
1293 attr->reserved1 = 0;
1294 out_filter->num_attrs++;
1298 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1299 struct ieee80211_vif *vif)
1301 struct iwl_bcast_iter_data *data = _data;
1302 struct iwl_mvm *mvm = data->mvm;
1303 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1304 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1305 struct iwl_fw_bcast_mac *bcast_mac;
1308 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1311 bcast_mac = &cmd->macs[mvmvif->id];
1314 * enable filtering only for associated stations, but not for P2P
1317 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1318 !vif->bss_conf.assoc)
1321 bcast_mac->default_discard = 1;
1323 /* copy all configured filters */
1324 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1326 * Make sure we don't exceed our filters limit.
1327 * if there is still a valid filter to be configured,
1328 * be on the safe side and just allow bcast for this mac.
1330 if (WARN_ON_ONCE(data->current_filter >=
1331 ARRAY_SIZE(cmd->filters))) {
1332 bcast_mac->default_discard = 0;
1333 bcast_mac->attached_filters = 0;
1337 iwl_mvm_set_bcast_filter(vif,
1338 &mvm->bcast_filters[i],
1339 &cmd->filters[data->current_filter]);
1341 /* skip current filter if it contains no attributes */
1342 if (!cmd->filters[data->current_filter].num_attrs)
1345 /* attach the filter to current mac */
1346 bcast_mac->attached_filters |=
1347 cpu_to_le16(BIT(data->current_filter));
1349 data->current_filter++;
1353 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1354 struct iwl_bcast_filter_cmd *cmd)
1356 struct iwl_bcast_iter_data iter_data = {
1361 memset(cmd, 0, sizeof(*cmd));
1362 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1363 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1365 #ifdef CONFIG_IWLWIFI_DEBUGFS
1366 /* use debugfs filters/macs if override is configured */
1367 if (mvm->dbgfs_bcast_filtering.override) {
1368 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1369 sizeof(cmd->filters));
1370 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1376 /* if no filters are configured, do nothing */
1377 if (!mvm->bcast_filters)
1380 /* configure and attach these filters for each associated sta vif */
1381 ieee80211_iterate_active_interfaces(
1382 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1383 iwl_mvm_bcast_filter_iterator, &iter_data);
1387 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1388 struct ieee80211_vif *vif)
1390 struct iwl_bcast_filter_cmd cmd;
1392 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1395 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1398 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1402 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1403 struct ieee80211_vif *vif)
1409 static void iwl_mvm_teardown_tdls_peers(struct iwl_mvm *mvm)
1411 struct ieee80211_sta *sta;
1412 struct iwl_mvm_sta *mvmsta;
1415 lockdep_assert_held(&mvm->mutex);
1417 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1418 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1419 lockdep_is_held(&mvm->mutex));
1420 if (!sta || IS_ERR(sta) || !sta->tdls)
1423 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1424 ieee80211_tdls_oper_request(mvmsta->vif, sta->addr,
1425 NL80211_TDLS_TEARDOWN,
1426 WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED,
1431 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1432 struct ieee80211_vif *vif,
1433 struct ieee80211_bss_conf *bss_conf,
1436 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1440 * Re-calculate the tsf id, as the master-slave relations depend on the
1441 * beacon interval, which was not known when the station interface was
1444 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1445 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1447 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false);
1449 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1451 if (changes & BSS_CHANGED_ASSOC) {
1452 if (bss_conf->assoc) {
1453 /* add quota for this interface */
1454 ret = iwl_mvm_update_quotas(mvm, NULL);
1456 IWL_ERR(mvm, "failed to update quotas\n");
1460 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1463 * If we're restarting then the firmware will
1464 * obviously have lost synchronisation with
1465 * the AP. It will attempt to synchronise by
1466 * itself, but we can make it more reliable by
1467 * scheduling a session protection time event.
1469 * The firmware needs to receive a beacon to
1470 * catch up with synchronisation, use 110% of
1471 * the beacon interval.
1473 * Set a large maximum delay to allow for more
1474 * than a single interface.
1476 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1477 iwl_mvm_protect_session(mvm, vif, dur, dur,
1481 iwl_mvm_sf_update(mvm, vif, false);
1482 iwl_mvm_power_vif_assoc(mvm, vif);
1484 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1485 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1487 * If update fails - SF might be running in associated
1488 * mode while disassociated - which is forbidden.
1490 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1491 "Failed to update SF upon disassociation\n");
1493 /* remove AP station now that the MAC is unassoc */
1494 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1496 IWL_ERR(mvm, "failed to remove AP station\n");
1498 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1499 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1500 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1501 /* remove quota for this interface */
1502 ret = iwl_mvm_update_quotas(mvm, NULL);
1504 IWL_ERR(mvm, "failed to update quotas\n");
1507 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1510 iwl_mvm_recalc_multicast(mvm);
1511 iwl_mvm_configure_bcast_filter(mvm, vif);
1513 /* reset rssi values */
1514 mvmvif->bf_data.ave_beacon_signal = 0;
1516 iwl_mvm_bt_coex_vif_change(mvm);
1517 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1518 IEEE80211_SMPS_AUTOMATIC);
1519 } else if (changes & BSS_CHANGED_BEACON_INFO) {
1521 * We received a beacon _after_ association so
1522 * remove the session protection.
1524 iwl_mvm_remove_time_event(mvm, mvmvif,
1525 &mvmvif->time_event_data);
1526 } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
1528 ret = iwl_mvm_power_update_mac(mvm);
1530 IWL_ERR(mvm, "failed to update power mode\n");
1533 if (changes & BSS_CHANGED_BEACON_INFO) {
1534 iwl_mvm_sf_update(mvm, vif, false);
1535 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1538 if (changes & BSS_CHANGED_TXPOWER) {
1539 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1541 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1544 if (changes & BSS_CHANGED_CQM) {
1545 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1546 /* reset cqm events tracking */
1547 mvmvif->bf_data.last_cqm_event = 0;
1548 if (mvmvif->bf_data.bf_enabled) {
1549 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1552 "failed to update CQM thresholds\n");
1556 if (changes & BSS_CHANGED_ARP_FILTER) {
1557 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1558 iwl_mvm_configure_bcast_filter(mvm, vif);
1562 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1563 struct ieee80211_vif *vif)
1565 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1566 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1570 * iwl_mvm_mac_ctxt_add() might read directly from the device
1571 * (the system time), so make sure it is available.
1573 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1577 mutex_lock(&mvm->mutex);
1579 /* Send the beacon template */
1580 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1585 * Re-calculate the tsf id, as the master-slave relations depend on the
1586 * beacon interval, which was not known when the AP interface was added.
1588 if (vif->type == NL80211_IFTYPE_AP)
1589 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1591 /* Add the mac context */
1592 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1596 /* Perform the binding */
1597 ret = iwl_mvm_binding_add_vif(mvm, vif);
1601 /* Send the bcast station. At this stage the TBTT and DTIM time events
1602 * are added and applied to the scheduler */
1603 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1607 /* must be set before quota calculations */
1608 mvmvif->ap_ibss_active = true;
1610 /* power updated needs to be done before quotas */
1611 iwl_mvm_power_update_mac(mvm);
1613 ret = iwl_mvm_update_quotas(mvm, NULL);
1615 goto out_quota_failed;
1617 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1618 if (vif->p2p && mvm->p2p_device_vif)
1619 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
1621 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1623 iwl_mvm_bt_coex_vif_change(mvm);
1625 /* we don't support TDLS during DCM */
1626 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1627 iwl_mvm_teardown_tdls_peers(mvm);
1629 mutex_unlock(&mvm->mutex);
1633 iwl_mvm_power_update_mac(mvm);
1634 mvmvif->ap_ibss_active = false;
1635 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1637 iwl_mvm_binding_remove_vif(mvm, vif);
1639 iwl_mvm_mac_ctxt_remove(mvm, vif);
1641 mutex_unlock(&mvm->mutex);
1642 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
1646 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1647 struct ieee80211_vif *vif)
1649 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1650 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1652 iwl_mvm_prepare_mac_removal(mvm, vif);
1654 mutex_lock(&mvm->mutex);
1656 /* Handle AP stop while in CSA */
1657 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1658 iwl_mvm_remove_time_event(mvm, mvmvif,
1659 &mvmvif->time_event_data);
1660 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1663 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1664 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1665 mvm->csa_tx_block_bcn_timeout = 0;
1668 mvmvif->ap_ibss_active = false;
1669 mvm->ap_last_beacon_gp2 = 0;
1671 iwl_mvm_bt_coex_vif_change(mvm);
1673 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1675 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1676 if (vif->p2p && mvm->p2p_device_vif)
1677 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
1679 iwl_mvm_update_quotas(mvm, NULL);
1680 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1681 iwl_mvm_binding_remove_vif(mvm, vif);
1683 iwl_mvm_power_update_mac(mvm);
1685 iwl_mvm_mac_ctxt_remove(mvm, vif);
1687 mutex_unlock(&mvm->mutex);
1691 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1692 struct ieee80211_vif *vif,
1693 struct ieee80211_bss_conf *bss_conf,
1696 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1698 /* Changes will be applied when the AP/IBSS is started */
1699 if (!mvmvif->ap_ibss_active)
1702 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1703 BSS_CHANGED_BANDWIDTH) &&
1704 iwl_mvm_mac_ctxt_changed(mvm, vif, false))
1705 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1707 /* Need to send a new beacon template to the FW */
1708 if (changes & BSS_CHANGED_BEACON &&
1709 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1710 IWL_WARN(mvm, "Failed updating beacon data\n");
1713 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1714 struct ieee80211_vif *vif,
1715 struct ieee80211_bss_conf *bss_conf,
1718 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1721 * iwl_mvm_bss_info_changed_station() might call
1722 * iwl_mvm_protect_session(), which reads directly from
1723 * the device (the system time), so make sure it is available.
1725 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1728 mutex_lock(&mvm->mutex);
1730 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
1731 iwl_mvm_scan_offload_stop(mvm, true);
1733 switch (vif->type) {
1734 case NL80211_IFTYPE_STATION:
1735 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1737 case NL80211_IFTYPE_AP:
1738 case NL80211_IFTYPE_ADHOC:
1739 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1742 /* shouldn't happen */
1746 mutex_unlock(&mvm->mutex);
1747 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
1750 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1751 enum iwl_scan_status scan_type)
1754 bool wait_for_handlers = false;
1756 mutex_lock(&mvm->mutex);
1758 if (mvm->scan_status != scan_type) {
1760 /* make sure there are no pending notifications */
1761 wait_for_handlers = true;
1765 switch (scan_type) {
1766 case IWL_MVM_SCAN_SCHED:
1767 ret = iwl_mvm_scan_offload_stop(mvm, true);
1769 case IWL_MVM_SCAN_OS:
1770 ret = iwl_mvm_cancel_scan(mvm);
1772 case IWL_MVM_SCAN_NONE:
1781 wait_for_handlers = true;
1783 mutex_unlock(&mvm->mutex);
1785 /* make sure we consume the completion notification */
1786 if (wait_for_handlers)
1787 iwl_mvm_wait_for_async_handlers(mvm);
1791 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1792 struct ieee80211_vif *vif,
1793 struct ieee80211_scan_request *hw_req)
1795 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1796 struct cfg80211_scan_request *req = &hw_req->req;
1799 if (req->n_channels == 0 ||
1800 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1803 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1807 mutex_lock(&mvm->mutex);
1809 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1814 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1816 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1817 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1819 ret = iwl_mvm_scan_request(mvm, vif, req);
1822 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1824 mutex_unlock(&mvm->mutex);
1828 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1829 struct ieee80211_vif *vif)
1831 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1833 mutex_lock(&mvm->mutex);
1835 iwl_mvm_cancel_scan(mvm);
1837 mutex_unlock(&mvm->mutex);
1841 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1842 struct ieee80211_sta *sta, u16 tids,
1844 enum ieee80211_frame_release_type reason,
1847 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1849 /* Called when we need to transmit (a) frame(s) from mac80211 */
1851 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1852 tids, more_data, false);
1856 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1857 struct ieee80211_sta *sta, u16 tids,
1859 enum ieee80211_frame_release_type reason,
1862 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1864 /* Called when we need to transmit (a) frame(s) from agg queue */
1866 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1867 tids, more_data, true);
1870 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1871 struct ieee80211_vif *vif,
1872 enum sta_notify_cmd cmd,
1873 struct ieee80211_sta *sta)
1875 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1876 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1880 case STA_NOTIFY_SLEEP:
1881 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
1882 ieee80211_sta_block_awake(hw, sta, true);
1883 spin_lock_bh(&mvmsta->lock);
1884 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1885 struct iwl_mvm_tid_data *tid_data;
1887 tid_data = &mvmsta->tid_data[tid];
1888 if (tid_data->state != IWL_AGG_ON &&
1889 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
1891 if (iwl_mvm_tid_queued(tid_data) == 0)
1893 ieee80211_sta_set_buffered(sta, tid, true);
1895 spin_unlock_bh(&mvmsta->lock);
1897 * The fw updates the STA to be asleep. Tx packets on the Tx
1898 * queues to this station will not be transmitted. The fw will
1899 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1902 case STA_NOTIFY_AWAKE:
1903 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1905 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1912 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1913 struct ieee80211_vif *vif,
1914 struct ieee80211_sta *sta)
1916 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1917 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1920 * This is called before mac80211 does RCU synchronisation,
1921 * so here we already invalidate our internal RCU-protected
1922 * station pointer. The rest of the code will thus no longer
1923 * be able to find the station this way, and we don't rely
1924 * on further RCU synchronisation after the sta_state()
1925 * callback deleted the station.
1927 mutex_lock(&mvm->mutex);
1928 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1929 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1931 mutex_unlock(&mvm->mutex);
1934 int iwl_mvm_tdls_sta_count(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1936 struct ieee80211_sta *sta;
1937 struct iwl_mvm_sta *mvmsta;
1941 lockdep_assert_held(&mvm->mutex);
1943 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1944 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1945 lockdep_is_held(&mvm->mutex));
1946 if (!sta || IS_ERR(sta) || !sta->tdls)
1950 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1951 if (mvmsta->vif != vif)
1961 static void iwl_mvm_recalc_tdls_state(struct iwl_mvm *mvm,
1962 struct ieee80211_vif *vif,
1965 int tdls_sta_cnt = iwl_mvm_tdls_sta_count(mvm, vif);
1968 * Disable ps when the first TDLS sta is added and re-enable it
1969 * when the last TDLS sta is removed
1971 if ((tdls_sta_cnt == 1 && sta_added) ||
1972 (tdls_sta_cnt == 0 && !sta_added))
1973 iwl_mvm_power_update_mac(mvm);
1976 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1977 struct ieee80211_vif *vif,
1978 struct ieee80211_sta *sta,
1979 enum ieee80211_sta_state old_state,
1980 enum ieee80211_sta_state new_state)
1982 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1983 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1986 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1987 sta->addr, old_state, new_state);
1989 /* this would be a mac80211 bug ... but don't crash */
1990 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1993 /* if a STA is being removed, reuse its ID */
1994 flush_work(&mvm->sta_drained_wk);
1996 mutex_lock(&mvm->mutex);
1997 if (old_state == IEEE80211_STA_NOTEXIST &&
1998 new_state == IEEE80211_STA_NONE) {
2000 * Firmware bug - it'll crash if the beacon interval is less
2001 * than 16. We can't avoid connecting at all, so refuse the
2002 * station state change, this will cause mac80211 to abandon
2003 * attempts to connect to this AP, and eventually wpa_s will
2004 * blacklist the AP...
2006 if (vif->type == NL80211_IFTYPE_STATION &&
2007 vif->bss_conf.beacon_int < 16) {
2009 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2010 sta->addr, vif->bss_conf.beacon_int);
2017 iwl_mvm_tdls_sta_count(mvm, NULL) ==
2018 IWL_MVM_TDLS_STA_COUNT ||
2019 iwl_mvm_phy_ctx_count(mvm) > 1)) {
2020 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2025 ret = iwl_mvm_add_sta(mvm, vif, sta);
2026 if (sta->tdls && ret == 0)
2027 iwl_mvm_recalc_tdls_state(mvm, vif, true);
2028 } else if (old_state == IEEE80211_STA_NONE &&
2029 new_state == IEEE80211_STA_AUTH) {
2031 * EBS may be disabled due to previous failures reported by FW.
2032 * Reset EBS status here assuming environment has been changed.
2034 mvm->last_ebs_successful = true;
2036 } else if (old_state == IEEE80211_STA_AUTH &&
2037 new_state == IEEE80211_STA_ASSOC) {
2038 ret = iwl_mvm_update_sta(mvm, vif, sta);
2040 iwl_mvm_rs_rate_init(mvm, sta,
2041 mvmvif->phy_ctxt->channel->band,
2043 } else if (old_state == IEEE80211_STA_ASSOC &&
2044 new_state == IEEE80211_STA_AUTHORIZED) {
2046 /* we don't support TDLS during DCM */
2047 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2048 iwl_mvm_teardown_tdls_peers(mvm);
2050 /* enable beacon filtering */
2051 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2053 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2054 new_state == IEEE80211_STA_ASSOC) {
2055 /* disable beacon filtering */
2056 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2058 } else if (old_state == IEEE80211_STA_ASSOC &&
2059 new_state == IEEE80211_STA_AUTH) {
2061 } else if (old_state == IEEE80211_STA_AUTH &&
2062 new_state == IEEE80211_STA_NONE) {
2064 } else if (old_state == IEEE80211_STA_NONE &&
2065 new_state == IEEE80211_STA_NOTEXIST) {
2066 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2068 iwl_mvm_recalc_tdls_state(mvm, vif, false);
2073 mutex_unlock(&mvm->mutex);
2078 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2080 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2082 mvm->rts_threshold = value;
2087 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2088 struct ieee80211_vif *vif,
2089 struct ieee80211_sta *sta, u32 changed)
2091 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2093 if (vif->type == NL80211_IFTYPE_STATION &&
2094 changed & IEEE80211_RC_NSS_CHANGED)
2095 iwl_mvm_sf_update(mvm, vif, false);
2098 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2099 struct ieee80211_vif *vif, u16 ac,
2100 const struct ieee80211_tx_queue_params *params)
2102 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2103 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2105 mvmvif->queue_params[ac] = *params;
2108 * No need to update right away, we'll get BSS_CHANGED_QOS
2109 * The exception is P2P_DEVICE interface which needs immediate update.
2111 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2114 mutex_lock(&mvm->mutex);
2115 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false);
2116 mutex_unlock(&mvm->mutex);
2122 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2123 struct ieee80211_vif *vif)
2125 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2126 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2127 200 + vif->bss_conf.beacon_int);
2128 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2129 100 + vif->bss_conf.beacon_int);
2131 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2135 * iwl_mvm_protect_session() reads directly from the device
2136 * (the system time), so make sure it is available.
2138 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2141 mutex_lock(&mvm->mutex);
2142 /* Try really hard to protect the session and hear a beacon */
2143 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
2144 mutex_unlock(&mvm->mutex);
2146 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2149 static void iwl_mvm_mac_mgd_protect_tdls_discover(struct ieee80211_hw *hw,
2150 struct ieee80211_vif *vif)
2152 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2153 u32 duration = 2 * vif->bss_conf.dtim_period * vif->bss_conf.beacon_int;
2156 * iwl_mvm_protect_session() reads directly from the device
2157 * (the system time), so make sure it is available.
2159 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_TDLS))
2162 mutex_lock(&mvm->mutex);
2163 /* Protect the session to hear the TDLS setup response on the channel */
2164 iwl_mvm_protect_session(mvm, vif, duration, duration, 100);
2165 mutex_unlock(&mvm->mutex);
2167 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_TDLS);
2170 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2171 struct ieee80211_vif *vif,
2172 struct cfg80211_sched_scan_request *req,
2173 struct ieee80211_scan_ies *ies)
2175 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2178 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2182 mutex_lock(&mvm->mutex);
2184 if (!iwl_mvm_is_idle(mvm)) {
2189 if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2194 mvm->scan_status = IWL_MVM_SCAN_SCHED;
2196 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
2197 ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
2202 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2206 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
2207 ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies);
2209 ret = iwl_mvm_sched_scan_start(mvm, req);
2214 mvm->scan_status = IWL_MVM_SCAN_NONE;
2216 mutex_unlock(&mvm->mutex);
2220 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2221 struct ieee80211_vif *vif)
2223 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2226 mutex_lock(&mvm->mutex);
2227 ret = iwl_mvm_scan_offload_stop(mvm, false);
2228 mutex_unlock(&mvm->mutex);
2229 iwl_mvm_wait_for_async_handlers(mvm);
2234 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2235 enum set_key_cmd cmd,
2236 struct ieee80211_vif *vif,
2237 struct ieee80211_sta *sta,
2238 struct ieee80211_key_conf *key)
2240 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2243 if (iwlwifi_mod_params.sw_crypto) {
2244 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2248 switch (key->cipher) {
2249 case WLAN_CIPHER_SUITE_TKIP:
2250 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2252 case WLAN_CIPHER_SUITE_CCMP:
2253 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2255 case WLAN_CIPHER_SUITE_AES_CMAC:
2256 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2258 case WLAN_CIPHER_SUITE_WEP40:
2259 case WLAN_CIPHER_SUITE_WEP104:
2261 * Support for TX only, at least for now, so accept
2262 * the key and do nothing else. Then mac80211 will
2263 * pass it for TX but we don't have to use it for RX.
2267 /* currently FW supports only one optional cipher scheme */
2268 if (hw->n_cipher_schemes &&
2269 hw->cipher_schemes->cipher == key->cipher)
2270 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2275 mutex_lock(&mvm->mutex);
2279 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2280 vif->type == NL80211_IFTYPE_AP) && !sta) {
2282 * GTK on AP interface is a TX-only key, return 0;
2283 * on IBSS they're per-station and because we're lazy
2284 * we don't support them for RX, so do the same.
2287 key->hw_key_idx = STA_KEY_IDX_INVALID;
2291 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2292 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2294 IWL_WARN(mvm, "set key failed\n");
2296 * can't add key for RX, but we don't need it
2297 * in the device for TX so still return 0
2299 key->hw_key_idx = STA_KEY_IDX_INVALID;
2305 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2310 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2311 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2317 mutex_unlock(&mvm->mutex);
2321 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2322 struct ieee80211_vif *vif,
2323 struct ieee80211_key_conf *keyconf,
2324 struct ieee80211_sta *sta,
2325 u32 iv32, u16 *phase1key)
2327 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2329 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2332 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2336 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2337 struct iwl_rx_packet *pkt, void *data)
2339 struct iwl_mvm *mvm =
2340 container_of(notif_wait, struct iwl_mvm, notif_wait);
2341 struct iwl_hs20_roc_res *resp;
2342 int resp_len = iwl_rx_packet_payload_len(pkt);
2343 struct iwl_mvm_time_event_data *te_data = data;
2345 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2348 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2349 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2353 resp = (void *)pkt->data;
2356 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2357 resp->status, resp->event_unique_id);
2359 te_data->uid = le32_to_cpu(resp->event_unique_id);
2360 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2363 spin_lock_bh(&mvm->time_event_lock);
2364 list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2365 spin_unlock_bh(&mvm->time_event_lock);
2370 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2371 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2372 struct ieee80211_channel *channel,
2373 struct ieee80211_vif *vif,
2376 int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2377 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2378 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2379 static const u8 time_event_response[] = { HOT_SPOT_CMD };
2380 struct iwl_notification_wait wait_time_event;
2381 struct iwl_hs20_roc_req aux_roc_req = {
2382 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2384 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2385 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2386 /* Set the channel info data */
2387 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2388 PHY_BAND_24 : PHY_BAND_5,
2389 .channel_info.channel = channel->hw_value,
2390 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2391 /* Set the time and duration */
2392 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2393 .apply_time_max_delay =
2394 cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2395 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2398 /* Set the node address */
2399 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2402 te_data->duration = duration;
2403 te_data->id = HOT_SPOT_CMD;
2405 lockdep_assert_held(&mvm->mutex);
2407 spin_lock_bh(&mvm->time_event_lock);
2408 list_add_tail(&te_data->list, &mvm->time_event_list);
2409 spin_unlock_bh(&mvm->time_event_lock);
2412 * Use a notification wait, which really just processes the
2413 * command response and doesn't wait for anything, in order
2414 * to be able to process the response and get the UID inside
2415 * the RX path. Using CMD_WANT_SKB doesn't work because it
2416 * stores the buffer and then wakes up this thread, by which
2417 * time another notification (that the time event started)
2418 * might already be processed unsuccessfully.
2420 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2421 time_event_response,
2422 ARRAY_SIZE(time_event_response),
2423 iwl_mvm_rx_aux_roc, te_data);
2425 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2429 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2430 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2434 /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2435 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2436 /* should never fail */
2441 spin_lock_bh(&mvm->time_event_lock);
2442 iwl_mvm_te_clear_data(mvm, te_data);
2443 spin_unlock_bh(&mvm->time_event_lock);
2449 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2450 struct ieee80211_vif *vif,
2451 struct ieee80211_channel *channel,
2453 enum ieee80211_roc_type type)
2455 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2456 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2457 struct cfg80211_chan_def chandef;
2458 struct iwl_mvm_phy_ctxt *phy_ctxt;
2461 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2464 switch (vif->type) {
2465 case NL80211_IFTYPE_STATION:
2466 /* Use aux roc framework (HS20) */
2467 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2470 case NL80211_IFTYPE_P2P_DEVICE:
2474 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2478 mutex_lock(&mvm->mutex);
2480 for (i = 0; i < NUM_PHY_CTX; i++) {
2481 phy_ctxt = &mvm->phy_ctxts[i];
2482 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2485 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2487 * Unbind the P2P_DEVICE from the current PHY context,
2488 * and if the PHY context is not used remove it.
2490 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2491 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2494 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2496 /* Bind the P2P_DEVICE to the current PHY Context */
2497 mvmvif->phy_ctxt = phy_ctxt;
2499 ret = iwl_mvm_binding_add_vif(mvm, vif);
2500 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2503 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2504 goto schedule_time_event;
2508 /* Need to update the PHY context only if the ROC channel changed */
2509 if (channel == mvmvif->phy_ctxt->channel)
2510 goto schedule_time_event;
2512 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2515 * Change the PHY context configuration as it is currently referenced
2516 * only by the P2P Device MAC
2518 if (mvmvif->phy_ctxt->ref == 1) {
2519 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2525 * The PHY context is shared with other MACs. Need to remove the
2526 * P2P Device from the binding, allocate an new PHY context and
2527 * create a new binding
2529 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2535 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2538 IWL_ERR(mvm, "Failed to change PHY context\n");
2542 /* Unbind the P2P_DEVICE from the current PHY context */
2543 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2544 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2547 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2549 /* Bind the P2P_DEVICE to the new allocated PHY context */
2550 mvmvif->phy_ctxt = phy_ctxt;
2552 ret = iwl_mvm_binding_add_vif(mvm, vif);
2553 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2556 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2559 schedule_time_event:
2560 /* Schedule the time events */
2561 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2564 mutex_unlock(&mvm->mutex);
2565 IWL_DEBUG_MAC80211(mvm, "leave\n");
2569 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2571 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2573 IWL_DEBUG_MAC80211(mvm, "enter\n");
2575 mutex_lock(&mvm->mutex);
2576 iwl_mvm_stop_p2p_roc(mvm);
2577 mutex_unlock(&mvm->mutex);
2579 IWL_DEBUG_MAC80211(mvm, "leave\n");
2583 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2584 struct ieee80211_chanctx_conf *ctx)
2586 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2587 struct iwl_mvm_phy_ctxt *phy_ctxt;
2590 lockdep_assert_held(&mvm->mutex);
2592 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2594 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2600 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2601 ctx->rx_chains_static,
2602 ctx->rx_chains_dynamic);
2604 IWL_ERR(mvm, "Failed to add PHY context\n");
2608 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2609 *phy_ctxt_id = phy_ctxt->id;
2614 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2615 struct ieee80211_chanctx_conf *ctx)
2617 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2620 mutex_lock(&mvm->mutex);
2621 ret = __iwl_mvm_add_chanctx(mvm, ctx);
2622 mutex_unlock(&mvm->mutex);
2627 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2628 struct ieee80211_chanctx_conf *ctx)
2630 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2631 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2633 lockdep_assert_held(&mvm->mutex);
2635 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2638 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2639 struct ieee80211_chanctx_conf *ctx)
2641 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2643 mutex_lock(&mvm->mutex);
2644 __iwl_mvm_remove_chanctx(mvm, ctx);
2645 mutex_unlock(&mvm->mutex);
2648 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2649 struct ieee80211_chanctx_conf *ctx,
2652 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2653 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2654 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2656 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2657 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2658 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2659 IEEE80211_CHANCTX_CHANGE_RADAR |
2660 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2661 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2662 phy_ctxt->ref, changed))
2665 mutex_lock(&mvm->mutex);
2666 iwl_mvm_bt_coex_vif_change(mvm);
2667 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2668 ctx->rx_chains_static,
2669 ctx->rx_chains_dynamic);
2670 mutex_unlock(&mvm->mutex);
2673 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2674 struct ieee80211_vif *vif,
2675 struct ieee80211_chanctx_conf *ctx,
2676 bool switching_chanctx)
2678 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2679 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2680 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2683 lockdep_assert_held(&mvm->mutex);
2685 mvmvif->phy_ctxt = phy_ctxt;
2687 switch (vif->type) {
2688 case NL80211_IFTYPE_AP:
2689 /* Unless it's a CSA flow we have nothing to do here */
2690 if (vif->csa_active) {
2691 mvmvif->ap_ibss_active = true;
2694 case NL80211_IFTYPE_ADHOC:
2696 * The AP binding flow is handled as part of the start_ap flow
2697 * (in bss_info_changed), similarly for IBSS.
2701 case NL80211_IFTYPE_STATION:
2702 case NL80211_IFTYPE_MONITOR:
2709 ret = iwl_mvm_binding_add_vif(mvm, vif);
2714 * Power state must be updated before quotas,
2715 * otherwise fw will complain.
2717 iwl_mvm_power_update_mac(mvm);
2719 /* Setting the quota at this stage is only required for monitor
2720 * interfaces. For the other types, the bss_info changed flow
2721 * will handle quota settings.
2723 if (vif->type == NL80211_IFTYPE_MONITOR) {
2724 mvmvif->monitor_active = true;
2725 ret = iwl_mvm_update_quotas(mvm, NULL);
2727 goto out_remove_binding;
2730 /* Handle binding during CSA */
2731 if ((vif->type == NL80211_IFTYPE_AP) ||
2732 (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) {
2733 iwl_mvm_update_quotas(mvm, NULL);
2734 iwl_mvm_mac_ctxt_changed(mvm, vif, false);
2740 iwl_mvm_binding_remove_vif(mvm, vif);
2741 iwl_mvm_power_update_mac(mvm);
2744 mvmvif->phy_ctxt = NULL;
2747 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2748 struct ieee80211_vif *vif,
2749 struct ieee80211_chanctx_conf *ctx)
2751 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2754 mutex_lock(&mvm->mutex);
2755 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
2756 mutex_unlock(&mvm->mutex);
2761 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2762 struct ieee80211_vif *vif,
2763 struct ieee80211_chanctx_conf *ctx,
2764 bool switching_chanctx)
2766 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2767 struct ieee80211_vif *disabled_vif = NULL;
2769 lockdep_assert_held(&mvm->mutex);
2771 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2773 switch (vif->type) {
2774 case NL80211_IFTYPE_ADHOC:
2776 case NL80211_IFTYPE_MONITOR:
2777 mvmvif->monitor_active = false;
2779 case NL80211_IFTYPE_AP:
2780 /* This part is triggered only during CSA */
2781 if (!vif->csa_active || !mvmvif->ap_ibss_active)
2784 /* Set CS bit on all the stations */
2785 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2787 /* Save blocked iface, the timeout is set on the next beacon */
2788 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2790 mvmvif->ap_ibss_active = false;
2792 case NL80211_IFTYPE_STATION:
2793 if (!switching_chanctx)
2798 iwl_mvm_mac_ctxt_changed(mvm, vif, true);
2804 iwl_mvm_update_quotas(mvm, disabled_vif);
2805 iwl_mvm_binding_remove_vif(mvm, vif);
2808 mvmvif->phy_ctxt = NULL;
2809 iwl_mvm_power_update_mac(mvm);
2812 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2813 struct ieee80211_vif *vif,
2814 struct ieee80211_chanctx_conf *ctx)
2816 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2818 mutex_lock(&mvm->mutex);
2819 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
2820 mutex_unlock(&mvm->mutex);
2823 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
2824 struct ieee80211_vif_chanctx_switch *vifs,
2826 enum ieee80211_chanctx_switch_mode mode)
2828 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2831 /* we only support SWAP_CONTEXTS and with a single-vif right now */
2832 if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1)
2835 mutex_lock(&mvm->mutex);
2836 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
2837 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2839 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2841 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2845 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2849 "failed to assign new_ctx during channel switch\n");
2853 /* we don't support TDLS during DCM - can be caused by channel switch */
2854 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2855 iwl_mvm_teardown_tdls_peers(mvm);
2860 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
2863 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx);
2865 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
2869 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
2872 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
2879 /* things keep failing, better restart the hw */
2880 iwl_mvm_nic_restart(mvm, false);
2883 mutex_unlock(&mvm->mutex);
2887 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2888 struct ieee80211_sta *sta,
2891 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2892 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2894 if (!mvm_sta || !mvm_sta->vif) {
2895 IWL_ERR(mvm, "Station is not associated to a vif\n");
2899 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2902 #ifdef CONFIG_NL80211_TESTMODE
2903 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2904 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2905 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
2906 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
2909 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
2910 struct ieee80211_vif *vif,
2911 void *data, int len)
2913 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
2917 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
2921 if (!tb[IWL_MVM_TM_ATTR_CMD])
2924 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
2925 case IWL_MVM_TM_CMD_SET_NOA:
2926 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
2927 !vif->bss_conf.enable_beacon ||
2928 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
2931 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
2932 if (noa_duration >= vif->bss_conf.beacon_int)
2935 mvm->noa_duration = noa_duration;
2938 return iwl_mvm_update_quotas(mvm, NULL);
2939 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
2940 /* must be associated client vif - ignore authorized */
2941 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
2942 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
2943 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
2946 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
2947 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2948 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
2954 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
2955 struct ieee80211_vif *vif,
2956 void *data, int len)
2958 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2961 mutex_lock(&mvm->mutex);
2962 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
2963 mutex_unlock(&mvm->mutex);
2969 static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
2970 struct ieee80211_vif *vif,
2971 struct cfg80211_chan_def *chandef)
2973 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2974 struct ieee80211_vif *csa_vif;
2976 mutex_lock(&mvm->mutex);
2978 csa_vif = rcu_dereference_protected(mvm->csa_vif,
2979 lockdep_is_held(&mvm->mutex));
2980 if (WARN(csa_vif && csa_vif->csa_active,
2981 "Another CSA is already in progress"))
2984 IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
2985 chandef->center_freq1);
2986 rcu_assign_pointer(mvm->csa_vif, vif);
2989 mutex_unlock(&mvm->mutex);
2992 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
2993 struct ieee80211_vif *vif, u32 queues, bool drop)
2995 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2996 struct iwl_mvm_vif *mvmvif;
2997 struct iwl_mvm_sta *mvmsta;
2999 if (!vif || vif->type != NL80211_IFTYPE_STATION)
3002 mutex_lock(&mvm->mutex);
3003 mvmvif = iwl_mvm_vif_from_mac80211(vif);
3004 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
3006 if (WARN_ON_ONCE(!mvmsta))
3010 if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
3011 IWL_ERR(mvm, "flush request fail\n");
3013 iwl_trans_wait_tx_queue_empty(mvm->trans,
3014 mvmsta->tfd_queue_msk);
3017 mutex_unlock(&mvm->mutex);
3020 const struct ieee80211_ops iwl_mvm_hw_ops = {
3021 .tx = iwl_mvm_mac_tx,
3022 .ampdu_action = iwl_mvm_mac_ampdu_action,
3023 .start = iwl_mvm_mac_start,
3024 .restart_complete = iwl_mvm_mac_restart_complete,
3025 .stop = iwl_mvm_mac_stop,
3026 .add_interface = iwl_mvm_mac_add_interface,
3027 .remove_interface = iwl_mvm_mac_remove_interface,
3028 .config = iwl_mvm_mac_config,
3029 .prepare_multicast = iwl_mvm_prepare_multicast,
3030 .configure_filter = iwl_mvm_configure_filter,
3031 .bss_info_changed = iwl_mvm_bss_info_changed,
3032 .hw_scan = iwl_mvm_mac_hw_scan,
3033 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3034 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3035 .sta_state = iwl_mvm_mac_sta_state,
3036 .sta_notify = iwl_mvm_mac_sta_notify,
3037 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3038 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3039 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3040 .sta_rc_update = iwl_mvm_sta_rc_update,
3041 .conf_tx = iwl_mvm_mac_conf_tx,
3042 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3043 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3044 .flush = iwl_mvm_mac_flush,
3045 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3046 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3047 .set_key = iwl_mvm_mac_set_key,
3048 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3049 .remain_on_channel = iwl_mvm_roc,
3050 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3051 .add_chanctx = iwl_mvm_add_chanctx,
3052 .remove_chanctx = iwl_mvm_remove_chanctx,
3053 .change_chanctx = iwl_mvm_change_chanctx,
3054 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3055 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3056 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3058 .start_ap = iwl_mvm_start_ap_ibss,
3059 .stop_ap = iwl_mvm_stop_ap_ibss,
3060 .join_ibss = iwl_mvm_start_ap_ibss,
3061 .leave_ibss = iwl_mvm_stop_ap_ibss,
3063 .set_tim = iwl_mvm_set_tim,
3065 .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
3067 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3069 #ifdef CONFIG_PM_SLEEP
3071 .suspend = iwl_mvm_suspend,
3072 .resume = iwl_mvm_resume,
3073 .set_wakeup = iwl_mvm_set_wakeup,
3074 .set_rekey_data = iwl_mvm_set_rekey_data,
3075 #if IS_ENABLED(CONFIG_IPV6)
3076 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3078 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,