2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2013-2015 Intel Mobile Communications GmbH
7 * Copyright (C) 2018 Intel Corporation
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
17 #include <linux/kernel.h>
18 #include <linux/device.h>
19 #include <linux/if_ether.h>
20 #include <linux/interrupt.h>
21 #include <linux/list.h>
22 #include <linux/netdevice.h>
23 #include <linux/skbuff.h>
24 #include <linux/workqueue.h>
25 #include <linux/types.h>
26 #include <linux/spinlock.h>
27 #include <linux/etherdevice.h>
28 #include <linux/leds.h>
29 #include <linux/idr.h>
30 #include <linux/rhashtable.h>
31 #include <net/ieee80211_radiotap.h>
32 #include <net/cfg80211.h>
33 #include <net/mac80211.h>
39 extern const struct cfg80211_ops mac80211_config_ops;
41 struct ieee80211_local;
43 /* Maximum number of broadcast/multicast frames to buffer when some of the
44 * associated stations are using power saving. */
45 #define AP_MAX_BC_BUFFER 128
47 /* Maximum number of frames buffered to all STAs, including multicast frames.
48 * Note: increasing this limit increases the potential memory requirement. Each
49 * frame can be up to about 2 kB long. */
50 #define TOTAL_MAX_TX_BUFFER 512
52 /* Required encryption head and tailroom */
53 #define IEEE80211_ENCRYPT_HEADROOM 8
54 #define IEEE80211_ENCRYPT_TAILROOM 18
56 /* power level hasn't been configured (or set to automatic) */
57 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
60 * Some APs experience problems when working with U-APSD. Decreasing the
61 * probability of that happening by using legacy mode for all ACs but VO isn't
64 * Cisco 4410N originally forced us to enable VO by default only because it
65 * treated non-VO ACs as legacy.
67 * However some APs (notably Netgear R7000) silently reclassify packets to
68 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
69 * clients would never see some frames (e.g. ARP responses) or would fetch them
70 * accidentally after a long time.
72 * It makes little sense to enable u-APSD queues by default because it needs
73 * userspace applications to be aware of it to actually take advantage of the
74 * possible additional powersavings. Implicitly depending on driver autotrigger
75 * frame support doesn't make much sense.
77 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
79 #define IEEE80211_DEFAULT_MAX_SP_LEN \
80 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
82 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
84 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
86 #define IEEE80211_MAX_NAN_INSTANCE_ID 255
88 struct ieee80211_bss {
89 u32 device_ts_beacon, device_ts_presp;
94 #define IEEE80211_MAX_SUPP_RATES 32
95 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
96 size_t supp_rates_len;
97 struct ieee80211_rate *beacon_rate;
100 * During association, we save an ERP value from a probe response so
101 * that we can feed ERP info to the driver when handling the
102 * association completes. these fields probably won't be up-to-date
103 * otherwise, you probably don't want to use them.
108 /* Keep track of the corruption of the last beacon/probe response. */
111 /* Keep track of what bits of information we have valid info for. */
116 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
117 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
118 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
120 * These are bss flags that are attached to a bss in the
121 * @corrupt_data field of &struct ieee80211_bss.
123 enum ieee80211_bss_corrupt_data_flags {
124 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
125 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
129 * enum ieee80211_valid_data_flags - BSS valid data flags
130 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
131 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
132 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
134 * These are bss flags that are attached to a bss in the
135 * @valid_data field of &struct ieee80211_bss. They show which parts
136 * of the data structure were received as a result of an un-corrupted
137 * beacon/probe response.
139 enum ieee80211_bss_valid_data_flags {
140 IEEE80211_BSS_VALID_WMM = BIT(1),
141 IEEE80211_BSS_VALID_RATES = BIT(2),
142 IEEE80211_BSS_VALID_ERP = BIT(3)
145 typedef unsigned __bitwise ieee80211_tx_result;
146 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
147 #define TX_DROP ((__force ieee80211_tx_result) 1u)
148 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
150 #define IEEE80211_TX_NO_SEQNO BIT(0)
151 #define IEEE80211_TX_UNICAST BIT(1)
152 #define IEEE80211_TX_PS_BUFFERED BIT(2)
154 struct ieee80211_tx_data {
156 struct sk_buff_head skbs;
157 struct ieee80211_local *local;
158 struct ieee80211_sub_if_data *sdata;
159 struct sta_info *sta;
160 struct ieee80211_key *key;
161 struct ieee80211_tx_rate rate;
167 typedef unsigned __bitwise ieee80211_rx_result;
168 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
169 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
170 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
171 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
174 * enum ieee80211_packet_rx_flags - packet RX flags
175 * @IEEE80211_RX_AMSDU: a-MSDU packet
176 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
177 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
179 * These are per-frame flags that are attached to a frame in the
180 * @rx_flags field of &struct ieee80211_rx_status.
182 enum ieee80211_packet_rx_flags {
183 IEEE80211_RX_AMSDU = BIT(3),
184 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
185 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
189 * enum ieee80211_rx_flags - RX data flags
191 * @IEEE80211_RX_CMNTR: received on cooked monitor already
192 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
193 * to cfg80211_report_obss_beacon().
195 * These flags are used across handling multiple interfaces
196 * for a single frame.
198 enum ieee80211_rx_flags {
199 IEEE80211_RX_CMNTR = BIT(0),
200 IEEE80211_RX_BEACON_REPORTED = BIT(1),
203 struct ieee80211_rx_data {
204 struct napi_struct *napi;
206 struct ieee80211_local *local;
207 struct ieee80211_sub_if_data *sdata;
208 struct sta_info *sta;
209 struct ieee80211_key *key;
214 * Index into sequence numbers array, 0..16
215 * since the last (16) is used for non-QoS,
216 * will be 16 on non-QoS frames.
221 * Index into the security IV/PN arrays, 0..16
222 * since the last (16) is used for CCMP-encrypted
223 * management frames, will be set to 16 on mgmt
224 * frames and 0 on non-QoS frames.
234 u8 pn[IEEE80211_CCMP_PN_LEN];
239 struct ieee80211_csa_settings {
240 const u16 *counter_offsets_beacon;
241 const u16 *counter_offsets_presp;
243 int n_counter_offsets_beacon;
244 int n_counter_offsets_presp;
251 int head_len, tail_len;
252 struct ieee80211_meshconf_ie *meshconf;
253 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
254 u8 csa_current_counter;
255 struct rcu_head rcu_head;
259 struct rcu_head rcu_head;
261 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
266 /* yes, this looks ugly, but guarantees that we can later use
268 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
269 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
270 __aligned(__alignof__(unsigned long));
271 struct sk_buff_head bc_buf;
272 atomic_t num_sta_ps; /* number of stations in PS mode */
277 struct ieee80211_if_ap {
278 struct beacon_data __rcu *beacon;
279 struct probe_resp __rcu *probe_resp;
281 /* to be used after channel switch. */
282 struct cfg80211_beacon_data *next_beacon;
283 struct list_head vlans; /* write-protected with RTNL and local->mtx */
286 atomic_t num_mcast_sta; /* number of stations receiving multicast */
287 enum ieee80211_smps_mode req_smps, /* requested smps mode */
288 driver_smps_mode; /* smps mode request */
290 struct work_struct request_smps_work;
291 bool multicast_to_unicast;
294 struct ieee80211_if_wds {
295 struct sta_info *sta;
296 u8 remote_addr[ETH_ALEN];
299 struct ieee80211_if_vlan {
300 struct list_head list; /* write-protected with RTNL and local->mtx */
302 /* used for all tx if the VLAN is configured to 4-addr mode */
303 struct sta_info __rcu *sta;
304 atomic_t num_mcast_sta; /* number of stations receiving multicast */
308 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
309 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
310 __u32 fwded_frames; /* Mesh total forwarded frames */
311 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
312 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
313 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
316 #define PREQ_Q_F_START 0x1
317 #define PREQ_Q_F_REFRESH 0x2
318 struct mesh_preq_queue {
319 struct list_head list;
324 struct ieee80211_roc_work {
325 struct list_head list;
327 struct ieee80211_sub_if_data *sdata;
329 struct ieee80211_channel *chan;
331 bool started, abort, hw_begun, notified;
334 unsigned long start_time;
336 u32 duration, req_duration;
337 struct sk_buff *frame;
338 u64 cookie, mgmt_tx_cookie;
339 enum ieee80211_roc_type type;
342 /* flags used in struct ieee80211_if_managed.flags */
343 enum ieee80211_sta_flags {
344 IEEE80211_STA_CONNECTION_POLL = BIT(1),
345 IEEE80211_STA_CONTROL_PORT = BIT(2),
346 IEEE80211_STA_DISABLE_HT = BIT(4),
347 IEEE80211_STA_MFP_ENABLED = BIT(6),
348 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
349 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
350 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
351 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
352 IEEE80211_STA_DISABLE_VHT = BIT(11),
353 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
354 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
355 IEEE80211_STA_DISABLE_WMM = BIT(14),
356 IEEE80211_STA_ENABLE_RRM = BIT(15),
357 IEEE80211_STA_DISABLE_HE = BIT(16),
360 struct ieee80211_mgd_auth_data {
361 struct cfg80211_bss *bss;
362 unsigned long timeout;
364 u16 algorithm, expected_transaction;
366 u8 key[WLAN_KEY_LEN_WEP104];
369 bool timeout_started;
371 u16 sae_trans, sae_status;
376 struct ieee80211_mgd_assoc_data {
377 struct cfg80211_bss *bss;
378 const u8 *supp_rates;
380 unsigned long timeout;
384 u8 prev_bssid[ETH_ALEN];
385 u8 ssid[IEEE80211_MAX_SSID_LEN];
391 bool timeout_started;
395 struct ieee80211_vht_cap ap_vht_cap;
397 u8 fils_nonces[2 * FILS_NONCE_LEN];
398 u8 fils_kek[FILS_MAX_KEK_LEN];
405 struct ieee80211_sta_tx_tspec {
406 /* timestamp of the first packet in the time slice */
407 unsigned long time_slice_start;
409 u32 admitted_time; /* in usecs, unlike over the air */
411 s8 up; /* signed to be able to invalidate with -1 during teardown */
413 /* consumed TX time in microseconds in the time slice */
414 u32 consumed_tx_time;
416 TX_TSPEC_ACTION_NONE = 0,
417 TX_TSPEC_ACTION_DOWNGRADE,
418 TX_TSPEC_ACTION_STOP_DOWNGRADE,
423 DECLARE_EWMA(beacon_signal, 4, 4)
425 struct ieee80211_if_managed {
426 struct timer_list timer;
427 struct timer_list conn_mon_timer;
428 struct timer_list bcn_mon_timer;
429 struct timer_list chswitch_timer;
430 struct work_struct monitor_work;
431 struct work_struct chswitch_work;
432 struct work_struct beacon_connection_loss_work;
433 struct work_struct csa_connection_drop_work;
435 unsigned long beacon_timeout;
436 unsigned long probe_timeout;
437 int probe_send_count;
438 bool nullfunc_failed;
439 bool connection_loss;
441 struct cfg80211_bss *associated;
442 struct ieee80211_mgd_auth_data *auth_data;
443 struct ieee80211_mgd_assoc_data *assoc_data;
445 u8 bssid[ETH_ALEN] __aligned(2);
449 bool powersave; /* powersave requested for this iface */
450 bool broken_ap; /* AP is broken -- turn off powersave */
453 enum ieee80211_smps_mode req_smps, /* requested smps mode */
454 driver_smps_mode; /* smps mode request */
456 struct work_struct request_smps_work;
460 bool csa_waiting_bcn;
461 bool csa_ignored_same_chan;
463 bool beacon_crc_valid;
467 bool status_received;
471 IEEE80211_MFP_DISABLED,
472 IEEE80211_MFP_OPTIONAL,
473 IEEE80211_MFP_REQUIRED
474 } mfp; /* management frame protection */
477 * Bitmask of enabled u-apsd queues,
478 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
481 unsigned int uapsd_queues;
484 * Maximum number of buffered frames AP can deliver during a
485 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
486 * Needs a new association to take effect.
488 unsigned int uapsd_max_sp_len;
490 int wmm_last_param_set;
496 struct ewma_beacon_signal ave_beacon_signal;
499 * Number of Beacon frames used in ave_beacon_signal. This can be used
500 * to avoid generating less reliable cqm events that would be based
501 * only on couple of received frames.
503 unsigned int count_beacon_signal;
505 /* Number of times beacon loss was invoked. */
506 unsigned int beacon_loss_count;
509 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
510 * that triggered a cqm event. 0 indicates that no event has been
511 * generated for the current association.
513 int last_cqm_event_signal;
516 * State variables for keeping track of RSSI of the AP currently
517 * connected to and informing driver when RSSI has gone
518 * below/above a certain threshold.
520 int rssi_min_thold, rssi_max_thold;
521 int last_ave_beacon_signal;
523 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
524 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
525 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
526 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
529 u8 tdls_peer[ETH_ALEN] __aligned(2);
530 struct delayed_work tdls_peer_del_work;
531 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
532 struct sk_buff *teardown_skb; /* A copy to send through the AP */
533 spinlock_t teardown_lock; /* To lock changing teardown_skb */
534 bool tdls_chan_switch_prohibited;
535 bool tdls_wider_bw_prohibited;
537 /* WMM-AC TSPEC support */
538 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
539 /* Use a separate work struct so that we can do something here
540 * while the sdata->work is flushing the queues, for example.
541 * otherwise, in scenarios where we hardly get any traffic out
542 * on the BE queue, but there's a lot of VO traffic, we might
543 * get stuck in a downgraded situation and flush takes forever.
545 struct delayed_work tx_tspec_wk;
548 struct ieee80211_if_ibss {
549 struct timer_list timer;
550 struct work_struct csa_connection_drop_work;
552 unsigned long last_scan_completed;
561 bool userspace_handles_dfs;
563 u8 bssid[ETH_ALEN] __aligned(2);
564 u8 ssid[IEEE80211_MAX_SSID_LEN];
567 struct cfg80211_chan_def chandef;
569 unsigned long ibss_join_req;
570 /* probe response/beacon for IBSS */
571 struct beacon_data __rcu *presp;
573 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
574 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
576 spinlock_t incomplete_lock;
577 struct list_head incomplete_stations;
580 IEEE80211_IBSS_MLME_SEARCH,
581 IEEE80211_IBSS_MLME_JOINED,
586 * struct ieee80211_if_ocb - OCB mode state
588 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
589 * @wrkq_flags: OCB deferred task action
590 * @incomplete_lock: delayed STA insertion lock
591 * @incomplete_stations: list of STAs waiting for delayed insertion
592 * @joined: indication if the interface is connected to an OCB network
594 struct ieee80211_if_ocb {
595 struct timer_list housekeeping_timer;
596 unsigned long wrkq_flags;
598 spinlock_t incomplete_lock;
599 struct list_head incomplete_stations;
605 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
607 * these declarations define the interface, which enables
608 * vendor-specific mesh synchronization
611 struct ieee802_11_elems;
612 struct ieee80211_mesh_sync_ops {
613 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
615 struct ieee80211_mgmt *mgmt,
616 struct ieee802_11_elems *elems,
617 struct ieee80211_rx_status *rx_status);
619 /* should be called with beacon_data under RCU read lock */
620 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
621 struct beacon_data *beacon);
622 /* add other framework functions here */
625 struct mesh_csa_settings {
626 struct rcu_head rcu_head;
627 struct cfg80211_csa_settings settings;
630 struct ieee80211_if_mesh {
631 struct timer_list housekeeping_timer;
632 struct timer_list mesh_path_timer;
633 struct timer_list mesh_path_root_timer;
635 unsigned long wrkq_flags;
636 unsigned long mbss_changed;
638 bool userspace_handles_dfs;
640 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
642 /* Active Path Selection Protocol Identifier */
644 /* Active Path Selection Metric Identifier */
646 /* Congestion Control Mode Identifier */
648 /* Synchronization Protocol Identifier */
650 /* Authentication Protocol Identifier */
652 /* Local mesh Sequence Number */
654 /* Last used PREQ ID */
657 /* Timestamp of last SN update */
658 unsigned long last_sn_update;
659 /* Time when it's ok to send next PERR */
660 unsigned long next_perr;
661 /* Timestamp of last PREQ sent */
662 unsigned long last_preq;
663 struct mesh_rmc *rmc;
664 spinlock_t mesh_preq_queue_lock;
665 struct mesh_preq_queue preq_queue;
667 struct mesh_stats mshstats;
668 struct mesh_config mshcfg;
669 atomic_t estab_plinks;
671 bool accepting_plinks;
673 struct beacon_data __rcu *beacon;
677 IEEE80211_MESH_SEC_NONE = 0x0,
678 IEEE80211_MESH_SEC_AUTHED = 0x1,
679 IEEE80211_MESH_SEC_SECURED = 0x2,
682 /* Extensible Synchronization Framework */
683 const struct ieee80211_mesh_sync_ops *sync_ops;
684 s64 sync_offset_clockdrift_max;
685 spinlock_t sync_offset_lock;
686 /* mesh power save */
687 enum nl80211_mesh_power_mode nonpeer_pm;
688 int ps_peers_light_sleep;
689 int ps_peers_deep_sleep;
691 /* Channel Switching Support */
692 struct mesh_csa_settings __rcu *csa;
694 IEEE80211_MESH_CSA_ROLE_NONE,
695 IEEE80211_MESH_CSA_ROLE_INIT,
696 IEEE80211_MESH_CSA_ROLE_REPEATER,
701 /* offset from skb->data while building IE */
704 struct mesh_table *mesh_paths;
705 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
706 int mesh_paths_generation;
707 int mpp_paths_generation;
710 #ifdef CONFIG_MAC80211_MESH
711 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
712 do { (msh)->mshstats.name++; } while (0)
714 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
719 * enum ieee80211_sub_if_data_flags - virtual interface flags
721 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
722 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
723 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
724 * associated stations and deliver multicast frames both
725 * back to wireless media and to the local net stack.
726 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
727 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
729 enum ieee80211_sub_if_data_flags {
730 IEEE80211_SDATA_ALLMULTI = BIT(0),
731 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
732 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
733 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
734 IEEE80211_SDATA_IN_DRIVER = BIT(5),
738 * enum ieee80211_sdata_state_bits - virtual interface state bits
739 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
740 * mirrors netif_running() but is separate for interface type
741 * change handling while the interface is up
742 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
743 * mode, so queues are stopped
744 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
745 * to offchannel, reset when offchannel returns
747 enum ieee80211_sdata_state_bits {
749 SDATA_STATE_OFFCHANNEL,
750 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
754 * enum ieee80211_chanctx_mode - channel context configuration mode
756 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
757 * multiple interfaces
758 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
759 * only by a single interface. This can be used for example for
760 * non-fixed channel IBSS.
762 enum ieee80211_chanctx_mode {
763 IEEE80211_CHANCTX_SHARED,
764 IEEE80211_CHANCTX_EXCLUSIVE
768 * enum ieee80211_chanctx_replace_state - channel context replacement state
770 * This is used for channel context in-place reservations that require channel
771 * context switch/swap.
773 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
774 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
775 * by a (not yet registered) channel context pointed by %replace_ctx.
776 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
777 * replaces an existing channel context pointed to by %replace_ctx.
779 enum ieee80211_chanctx_replace_state {
780 IEEE80211_CHANCTX_REPLACE_NONE,
781 IEEE80211_CHANCTX_WILL_BE_REPLACED,
782 IEEE80211_CHANCTX_REPLACES_OTHER,
785 struct ieee80211_chanctx {
786 struct list_head list;
787 struct rcu_head rcu_head;
789 struct list_head assigned_vifs;
790 struct list_head reserved_vifs;
792 enum ieee80211_chanctx_replace_state replace_state;
793 struct ieee80211_chanctx *replace_ctx;
795 enum ieee80211_chanctx_mode mode;
798 struct ieee80211_chanctx_conf conf;
801 struct mac80211_qos_map {
802 struct cfg80211_qos_map qos_map;
803 struct rcu_head rcu_head;
806 enum txq_info_flags {
809 IEEE80211_TXQ_NO_AMSDU,
813 * struct txq_info - per tid queue
815 * @tin: contains packets split into multiple flows
816 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
817 * a fq_flow which is already owned by a different tin
818 * @def_cvars: codel vars for @def_flow
819 * @frags: used to keep fragments created after dequeue
823 struct fq_flow def_flow;
824 struct codel_vars def_cvars;
825 struct codel_stats cstats;
826 struct sk_buff_head frags;
830 struct ieee80211_txq txq;
833 struct ieee80211_if_mntr {
835 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
837 struct list_head list;
841 * struct ieee80211_if_nan - NAN state
843 * @conf: current NAN configuration
844 * @func_ids: a bitmap of available instance_id's
846 struct ieee80211_if_nan {
847 struct cfg80211_nan_conf conf;
849 /* protects function_inst_ids */
850 spinlock_t func_lock;
851 struct idr function_inst_ids;
854 struct ieee80211_sub_if_data {
855 struct list_head list;
857 struct wireless_dev wdev;
860 struct list_head key_list;
862 /* count for keys needing tailroom space allocation */
863 int crypto_tx_tailroom_needed_cnt;
864 int crypto_tx_tailroom_pending_dec;
865 struct delayed_work dec_tailroom_needed_wk;
867 struct net_device *dev;
868 struct ieee80211_local *local;
876 struct ieee80211_fragment_cache frags;
878 /* TID bitmap for NoAck policy */
881 /* bit field of ACM bits (BIT(802.1D tag)) */
884 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
885 struct ieee80211_key __rcu *default_unicast_key;
886 struct ieee80211_key __rcu *default_multicast_key;
887 struct ieee80211_key __rcu *default_mgmt_key;
890 __be16 control_port_protocol;
891 bool control_port_no_encrypt;
892 bool control_port_over_nl80211;
893 int encrypt_headroom;
895 atomic_t num_tx_queued;
896 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
897 struct mac80211_qos_map __rcu *qos_map;
899 struct work_struct csa_finalize_work;
900 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
901 struct cfg80211_chan_def csa_chandef;
903 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
904 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
906 /* context reservation -- protected with chanctx_mtx */
907 struct ieee80211_chanctx *reserved_chanctx;
908 struct cfg80211_chan_def reserved_chandef;
909 bool reserved_radar_required;
912 /* used to reconfigure hardware SM PS */
913 struct work_struct recalc_smps;
915 struct work_struct work;
916 struct sk_buff_head skb_queue;
919 enum ieee80211_smps_mode smps_mode;
921 int user_power_level; /* in dBm */
922 int ap_power_level; /* in dBm */
925 struct delayed_work dfs_cac_timer_work;
928 * AP this belongs to: self in AP mode and
929 * corresponding AP in VLAN mode, NULL for
930 * all others (might be needed later in IBSS)
932 struct ieee80211_if_ap *bss;
934 /* bitmap of allowed (non-MCS) rate indexes for rate control */
935 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
937 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
938 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
940 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
941 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
944 struct ieee80211_if_ap ap;
945 struct ieee80211_if_wds wds;
946 struct ieee80211_if_vlan vlan;
947 struct ieee80211_if_managed mgd;
948 struct ieee80211_if_ibss ibss;
949 struct ieee80211_if_mesh mesh;
950 struct ieee80211_if_ocb ocb;
951 struct ieee80211_if_mntr mntr;
952 struct ieee80211_if_nan nan;
955 #ifdef CONFIG_MAC80211_DEBUGFS
957 struct dentry *subdir_stations;
958 struct dentry *default_unicast_key;
959 struct dentry *default_multicast_key;
960 struct dentry *default_mgmt_key;
964 /* must be last, dynamically sized area in this! */
965 struct ieee80211_vif vif;
969 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
971 return container_of(p, struct ieee80211_sub_if_data, vif);
974 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
975 __acquires(&sdata->wdev.mtx)
977 mutex_lock(&sdata->wdev.mtx);
978 __acquire(&sdata->wdev.mtx);
981 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
982 __releases(&sdata->wdev.mtx)
984 mutex_unlock(&sdata->wdev.mtx);
985 __release(&sdata->wdev.mtx);
988 #define sdata_dereference(p, sdata) \
989 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
992 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
994 lockdep_assert_held(&sdata->wdev.mtx);
998 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1000 switch (chandef->width) {
1001 case NL80211_CHAN_WIDTH_5:
1003 case NL80211_CHAN_WIDTH_10:
1011 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1013 struct ieee80211_chanctx_conf *chanctx_conf;
1017 chanctx_conf = rcu_dereference(vif->chanctx_conf);
1019 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1026 IEEE80211_RX_MSG = 1,
1027 IEEE80211_TX_STATUS_MSG = 2,
1030 enum queue_stop_reason {
1031 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1032 IEEE80211_QUEUE_STOP_REASON_PS,
1033 IEEE80211_QUEUE_STOP_REASON_CSA,
1034 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1035 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1036 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1037 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1038 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1039 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1040 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1041 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1043 IEEE80211_QUEUE_STOP_REASONS,
1046 #ifdef CONFIG_MAC80211_LEDS
1047 struct tpt_led_trigger {
1049 const struct ieee80211_tpt_blink *blink_table;
1050 unsigned int blink_table_len;
1051 struct timer_list timer;
1052 struct ieee80211_local *local;
1053 unsigned long prev_traffic;
1054 unsigned long tx_bytes, rx_bytes;
1055 unsigned int active, want;
1061 * mac80211 scan flags - currently active scan mode
1063 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1064 * well be on the operating channel
1065 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1066 * determine if we are on the operating channel or not
1067 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1068 * channel. This should not interrupt normal traffic.
1069 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1070 * that the scan completed.
1071 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1072 * a scan complete for an aborted scan.
1073 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1079 SCAN_ONCHANNEL_SCANNING,
1086 * enum mac80211_scan_state - scan state machine states
1088 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1089 * determines if we should keep on scanning or switch back to the
1091 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1092 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1093 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1095 * @SCAN_RESUME: Resume the scan and scan the next channel
1096 * @SCAN_ABORT: Abort the scan and go back to operating channel
1098 enum mac80211_scan_state {
1107 struct ieee80211_local {
1108 /* embed the driver visible part.
1109 * don't cast (use the static inlines below), but we keep
1110 * it first anyway so they become a no-op */
1111 struct ieee80211_hw hw;
1114 struct codel_vars *cvars;
1115 struct codel_params cparams;
1117 const struct ieee80211_ops *ops;
1120 * private workqueue to mac80211. mac80211 makes this accessible
1121 * via ieee80211_queue_work()
1123 struct workqueue_struct *workqueue;
1125 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1126 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1127 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1128 spinlock_t queue_stop_reason_lock;
1131 int monitors, cooked_mntrs;
1132 /* number of interfaces with corresponding FIF_ flags */
1133 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1136 unsigned int filter_flags; /* FIF_* */
1138 bool wiphy_ciphers_allocated;
1142 /* protects the aggregated multicast list and filter calls */
1143 spinlock_t filter_lock;
1145 /* used for uploading changed mc list */
1146 struct work_struct reconfig_filter;
1148 /* aggregated multicast list */
1149 struct netdev_hw_addr_list mc_list;
1151 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1154 * suspended is true if we finished all the suspend _and_ we have
1155 * not yet come up from resume. This is to be used by mac80211
1156 * to ensure driver sanity during suspend and mac80211's own
1157 * sanity. It can eventually be used for WoW as well.
1162 * Resuming is true while suspended, but when we're reprogramming the
1163 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1164 * again even though some other parts of the stack are still suspended
1165 * and we still drop received frames to avoid waking the stack.
1170 * quiescing is true during the suspend process _only_ to
1171 * ease timer cancelling etc.
1175 /* device is started */
1178 /* device is during a HW reconfig */
1181 /* wowlan is enabled -- don't reconfig on resume */
1184 struct work_struct radar_detected_work;
1186 /* number of RX chains the hardware has */
1189 int tx_headroom; /* required headroom for hardware/radiotap */
1191 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1192 * added to skb_queue will be processed, but frames in
1193 * skb_queue_unreliable may be dropped if the total length of these
1194 * queues increases over the limit. */
1195 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1196 struct tasklet_struct tasklet;
1197 struct sk_buff_head skb_queue;
1198 struct sk_buff_head skb_queue_unreliable;
1200 spinlock_t rx_path_lock;
1204 * The mutex only protects the list, hash table and
1205 * counter, reads are done with RCU.
1207 struct mutex sta_mtx;
1208 spinlock_t tim_lock;
1209 unsigned long num_sta;
1210 struct list_head sta_list;
1211 struct rhltable sta_hash;
1212 struct timer_list sta_cleanup;
1215 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1216 struct tasklet_struct tx_pending_tasklet;
1218 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1220 /* number of interfaces with allmulti RX */
1221 atomic_t iff_allmultis;
1223 struct rate_control_ref *rate_ctrl;
1225 struct crypto_cipher *wep_tx_tfm;
1226 struct crypto_cipher *wep_rx_tfm;
1230 struct list_head interfaces;
1231 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1232 struct mutex iflist_mtx;
1235 * Key mutex, protects sdata's key_list and sta_info's
1236 * key pointers (write access, they're RCU.)
1238 struct mutex key_mtx;
1240 /* mutex for scan and work locking */
1243 /* Scanning and BSS list */
1244 unsigned long scanning;
1245 struct cfg80211_ssid scan_ssid;
1246 struct cfg80211_scan_request *int_scan_req;
1247 struct cfg80211_scan_request __rcu *scan_req;
1248 struct ieee80211_scan_request *hw_scan_req;
1249 struct cfg80211_chan_def scan_chandef;
1250 enum nl80211_band hw_scan_band;
1251 int scan_channel_idx;
1253 int hw_scan_ies_bufsize;
1254 struct cfg80211_scan_info scan_info;
1256 struct work_struct sched_scan_stopped_work;
1257 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1258 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1259 u8 scan_addr[ETH_ALEN];
1261 unsigned long leave_oper_channel_time;
1262 enum mac80211_scan_state next_scan_state;
1263 struct delayed_work scan_work;
1264 struct ieee80211_sub_if_data __rcu *scan_sdata;
1265 /* For backward compatibility only -- do not use */
1266 struct cfg80211_chan_def _oper_chandef;
1268 /* Temporary remain-on-channel for off-channel operations */
1269 struct ieee80211_channel *tmp_channel;
1271 /* channel contexts */
1272 struct list_head chanctx_list;
1273 struct mutex chanctx_mtx;
1275 #ifdef CONFIG_MAC80211_LEDS
1276 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1277 struct led_trigger tpt_led;
1278 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1279 atomic_t radio_led_active, tpt_led_active;
1280 struct tpt_led_trigger *tpt_led_trigger;
1283 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1285 /* dot11CountersTable */
1286 u32 dot11TransmittedFragmentCount;
1287 u32 dot11MulticastTransmittedFrameCount;
1288 u32 dot11FailedCount;
1289 u32 dot11RetryCount;
1290 u32 dot11MultipleRetryCount;
1291 u32 dot11FrameDuplicateCount;
1292 u32 dot11ReceivedFragmentCount;
1293 u32 dot11MulticastReceivedFrameCount;
1294 u32 dot11TransmittedFrameCount;
1296 /* TX/RX handler statistics */
1297 unsigned int tx_handlers_drop;
1298 unsigned int tx_handlers_queued;
1299 unsigned int tx_handlers_drop_wep;
1300 unsigned int tx_handlers_drop_not_assoc;
1301 unsigned int tx_handlers_drop_unauth_port;
1302 unsigned int rx_handlers_drop;
1303 unsigned int rx_handlers_queued;
1304 unsigned int rx_handlers_drop_nullfunc;
1305 unsigned int rx_handlers_drop_defrag;
1306 unsigned int tx_expand_skb_head;
1307 unsigned int tx_expand_skb_head_cloned;
1308 unsigned int rx_expand_skb_head_defrag;
1309 unsigned int rx_handlers_fragments;
1310 unsigned int tx_status_drop;
1311 #define I802_DEBUG_INC(c) (c)++
1312 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1313 #define I802_DEBUG_INC(c) do { } while (0)
1314 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1317 int total_ps_buffered; /* total number of all buffered unicast and
1318 * multicast packets for power saving stations
1322 bool offchannel_ps_enabled;
1324 * PS can only be enabled when we have exactly one managed
1325 * interface (and monitors) in PS, this then points there.
1327 struct ieee80211_sub_if_data *ps_sdata;
1328 struct work_struct dynamic_ps_enable_work;
1329 struct work_struct dynamic_ps_disable_work;
1330 struct timer_list dynamic_ps_timer;
1331 struct notifier_block ifa_notifier;
1332 struct notifier_block ifa6_notifier;
1335 * The dynamic ps timeout configured from user space via WEXT -
1336 * this will override whatever chosen by mac80211 internally.
1338 int dynamic_ps_forced_timeout;
1340 int user_power_level; /* in dBm, for all interfaces */
1342 enum ieee80211_smps_mode smps_mode;
1344 struct work_struct restart_work;
1346 #ifdef CONFIG_MAC80211_DEBUGFS
1347 struct local_debugfsdentries {
1348 struct dentry *rcdir;
1349 struct dentry *keys;
1354 * Remain-on-channel support
1356 struct delayed_work roc_work;
1357 struct list_head roc_list;
1358 struct work_struct hw_roc_start, hw_roc_done;
1359 unsigned long hw_roc_start_time;
1360 u64 roc_cookie_counter;
1362 struct idr ack_status_frames;
1363 spinlock_t ack_status_lock;
1365 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1367 /* virtual monitor interface */
1368 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1369 struct cfg80211_chan_def monitor_chandef;
1371 /* extended capabilities provided by mac80211 */
1374 /* TDLS channel switch */
1375 struct work_struct tdls_chsw_work;
1376 struct sk_buff_head skb_queue_tdls_chsw;
1379 static inline struct ieee80211_sub_if_data *
1380 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1382 return netdev_priv(dev);
1385 static inline struct ieee80211_sub_if_data *
1386 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1388 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1391 static inline struct ieee80211_supported_band *
1392 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1394 struct ieee80211_local *local = sdata->local;
1395 struct ieee80211_chanctx_conf *chanctx_conf;
1396 enum nl80211_band band;
1399 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1401 if (!chanctx_conf) {
1406 band = chanctx_conf->def.chan->band;
1409 return local->hw.wiphy->bands[band];
1412 /* this struct holds the value parsing from channel switch IE */
1413 struct ieee80211_csa_ie {
1414 struct cfg80211_chan_def chandef;
1422 /* Parsed Information Elements */
1423 struct ieee802_11_elems {
1427 /* pointers to IEs */
1428 const struct ieee80211_tdls_lnkie *lnk_id;
1429 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1430 const u8 *ext_capab;
1432 const u8 *supp_rates;
1433 const u8 *ds_params;
1434 const struct ieee80211_tim_ie *tim;
1435 const u8 *challenge;
1438 const u8 *ext_supp_rates;
1440 const u8 *wmm_param;
1441 const struct ieee80211_ht_cap *ht_cap_elem;
1442 const struct ieee80211_ht_operation *ht_operation;
1443 const struct ieee80211_vht_cap *vht_cap_elem;
1444 const struct ieee80211_vht_operation *vht_operation;
1445 const struct ieee80211_meshconf_ie *mesh_config;
1447 const struct ieee80211_he_operation *he_operation;
1448 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1449 const u8 *uora_element;
1452 const __le16 *awake_window;
1456 const struct ieee80211_rann_ie *rann;
1457 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1458 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1459 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1460 const u8 *country_elem;
1461 const u8 *pwr_constr_elem;
1462 const u8 *cisco_dtpc_elem;
1463 const struct ieee80211_timeout_interval_ie *timeout_int;
1464 const u8 *opmode_notif;
1465 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1466 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1467 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1469 /* length of them, respectively */
1476 u8 ext_supp_rates_len;
1485 u8 country_elem_len;
1487 /* whether a parse error occurred while retrieving these elements */
1491 static inline struct ieee80211_local *hw_to_local(
1492 struct ieee80211_hw *hw)
1494 return container_of(hw, struct ieee80211_local, hw);
1497 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1499 return container_of(txq, struct txq_info, txq);
1502 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1504 struct txq_info *txqi = to_txq_info(txq);
1506 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1509 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1511 return ether_addr_equal(raddr, addr) ||
1512 is_broadcast_ether_addr(raddr);
1516 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1518 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1519 status->flag & RX_FLAG_MACTIME_END);
1520 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1522 /* can't handle non-legacy preamble yet */
1523 if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1524 status->encoding == RX_ENC_LEGACY)
1529 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1530 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1532 /* This function returns the number of multicast stations connected to this
1533 * interface. It returns -1 if that number is not tracked, that is for netdevs
1534 * not in AP or AP_VLAN mode or when using 4addr.
1537 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1539 if (sdata->vif.type == NL80211_IFTYPE_AP)
1540 return atomic_read(&sdata->u.ap.num_mcast_sta);
1541 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1542 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1546 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1547 struct ieee80211_rx_status *status,
1548 unsigned int mpdu_len,
1549 unsigned int mpdu_offset);
1550 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1551 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1552 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1554 void ieee80211_configure_filter(struct ieee80211_local *local);
1555 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1557 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1558 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1559 u64 *cookie, gfp_t gfp);
1561 void ieee80211_check_fast_rx(struct sta_info *sta);
1562 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1563 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1564 void ieee80211_clear_fast_rx(struct sta_info *sta);
1567 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1568 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1569 struct cfg80211_auth_request *req);
1570 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1571 struct cfg80211_assoc_request *req);
1572 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1573 struct cfg80211_deauth_request *req);
1574 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1575 struct cfg80211_disassoc_request *req);
1576 void ieee80211_send_pspoll(struct ieee80211_local *local,
1577 struct ieee80211_sub_if_data *sdata);
1578 void ieee80211_recalc_ps(struct ieee80211_local *local);
1579 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1580 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1581 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1582 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1583 struct sk_buff *skb);
1584 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1585 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1586 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1587 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1588 __le16 fc, bool acked);
1589 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1590 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1591 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1594 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1595 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1596 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1597 const u8 *bssid, const u8 *addr, u32 supp_rates);
1598 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1599 struct cfg80211_ibss_params *params);
1600 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1601 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1602 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1603 struct sk_buff *skb);
1604 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1605 struct cfg80211_csa_settings *csa_settings);
1606 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1607 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1610 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1611 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1612 const u8 *bssid, const u8 *addr, u32 supp_rates);
1613 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1614 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1615 struct ocb_setup *setup);
1616 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1619 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1620 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1621 struct sk_buff *skb);
1622 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1623 struct cfg80211_csa_settings *csa_settings);
1624 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1626 /* scan/BSS handling */
1627 void ieee80211_scan_work(struct work_struct *work);
1628 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1629 const u8 *ssid, u8 ssid_len,
1630 struct ieee80211_channel **channels,
1631 unsigned int n_channels,
1632 enum nl80211_bss_scan_width scan_width);
1633 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1634 struct cfg80211_scan_request *req);
1635 void ieee80211_scan_cancel(struct ieee80211_local *local);
1636 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1637 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1639 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1640 struct ieee80211_bss *
1641 ieee80211_bss_info_update(struct ieee80211_local *local,
1642 struct ieee80211_rx_status *rx_status,
1643 struct ieee80211_mgmt *mgmt,
1645 struct ieee802_11_elems *elems,
1646 struct ieee80211_channel *channel);
1647 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1648 struct ieee80211_bss *bss);
1650 /* scheduled scan handling */
1652 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1653 struct cfg80211_sched_scan_request *req);
1654 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1655 struct cfg80211_sched_scan_request *req);
1656 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1657 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1658 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1660 /* off-channel/mgmt-tx */
1661 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1662 void ieee80211_offchannel_return(struct ieee80211_local *local);
1663 void ieee80211_roc_setup(struct ieee80211_local *local);
1664 void ieee80211_start_next_roc(struct ieee80211_local *local);
1665 void ieee80211_roc_purge(struct ieee80211_local *local,
1666 struct ieee80211_sub_if_data *sdata);
1667 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1668 struct ieee80211_channel *chan,
1669 unsigned int duration, u64 *cookie);
1670 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1671 struct wireless_dev *wdev, u64 cookie);
1672 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1673 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1674 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1675 struct wireless_dev *wdev, u64 cookie);
1677 /* channel switch handling */
1678 void ieee80211_csa_finalize_work(struct work_struct *work);
1679 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1680 struct cfg80211_csa_settings *params);
1682 /* interface handling */
1683 int ieee80211_iface_init(void);
1684 void ieee80211_iface_exit(void);
1685 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1686 unsigned char name_assign_type,
1687 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1688 struct vif_params *params);
1689 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1690 enum nl80211_iftype type);
1691 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1692 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1693 u32 ieee80211_idle_off(struct ieee80211_local *local);
1694 void ieee80211_recalc_idle(struct ieee80211_local *local);
1695 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1697 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1698 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1699 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1700 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1702 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1703 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1706 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1708 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1712 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1713 void ieee80211_tx_pending(unsigned long data);
1714 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1715 struct net_device *dev);
1716 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1717 struct net_device *dev);
1718 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1719 struct net_device *dev,
1722 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1723 struct sk_buff_head *skbs);
1725 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1726 struct sk_buff *skb, u32 info_flags);
1727 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1728 struct ieee80211_supported_band *sband,
1729 int retry_count, int shift, bool send_to_cooked);
1731 void ieee80211_check_fast_xmit(struct sta_info *sta);
1732 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1733 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1734 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1735 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1736 const u8 *buf, size_t len,
1737 const u8 *dest, __be16 proto, bool unencrypted);
1740 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1741 struct ieee80211_sta_ht_cap *ht_cap);
1742 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1743 struct ieee80211_supported_band *sband,
1744 const struct ieee80211_ht_cap *ht_cap_ie,
1745 struct sta_info *sta);
1746 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1747 const u8 *da, u16 tid,
1748 u16 initiator, u16 reason_code);
1749 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1750 enum ieee80211_smps_mode smps, const u8 *da,
1752 void ieee80211_request_smps_ap_work(struct work_struct *work);
1753 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1754 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1755 enum ieee80211_smps_mode smps_mode_new);
1757 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1758 u16 initiator, u16 reason, bool stop);
1759 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1760 u16 initiator, u16 reason, bool stop);
1761 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
1762 u8 dialog_token, u16 timeout,
1763 u16 start_seq_num, u16 ba_policy, u16 tid,
1764 u16 buf_size, bool tx, bool auto_seq);
1765 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1766 enum ieee80211_agg_stop_reason reason);
1767 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1768 struct sta_info *sta,
1769 struct ieee80211_mgmt *mgmt, size_t len);
1770 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1771 struct sta_info *sta,
1772 struct ieee80211_mgmt *mgmt,
1774 void ieee80211_process_addba_request(struct ieee80211_local *local,
1775 struct sta_info *sta,
1776 struct ieee80211_mgmt *mgmt,
1779 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1780 enum ieee80211_agg_stop_reason reason);
1781 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1782 enum ieee80211_agg_stop_reason reason);
1783 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
1784 struct tid_ampdu_tx *tid_tx);
1785 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
1786 struct tid_ampdu_tx *tid_tx);
1787 void ieee80211_ba_session_work(struct work_struct *work);
1788 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1789 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1791 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1792 enum nl80211_smps_mode
1793 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
1797 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1798 struct ieee80211_supported_band *sband,
1799 const struct ieee80211_vht_cap *vht_cap_ie,
1800 struct sta_info *sta);
1801 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1802 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1803 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1804 enum ieee80211_sta_rx_bandwidth
1805 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1806 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1807 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1808 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1809 struct ieee80211_mgmt *mgmt);
1810 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1811 struct sta_info *sta, u8 opmode,
1812 enum nl80211_band band);
1813 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1814 struct sta_info *sta, u8 opmode,
1815 enum nl80211_band band);
1816 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1817 struct ieee80211_sta_vht_cap *vht_cap);
1818 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1819 u16 vht_mask[NL80211_VHT_NSS_MAX]);
1820 enum nl80211_chan_width
1821 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta);
1825 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
1826 struct ieee80211_supported_band *sband,
1827 const u8 *he_cap_ie, u8 he_cap_len,
1828 struct sta_info *sta);
1830 /* Spectrum management */
1831 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1832 struct ieee80211_mgmt *mgmt,
1835 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1836 * @sdata: the sdata of the interface which has received the frame
1837 * @elems: parsed 802.11 elements received with the frame
1838 * @current_band: indicates the current band
1839 * @sta_flags: contains information about own capabilities and restrictions
1840 * to decide which channel switch announcements can be accepted. Only the
1841 * following subset of &enum ieee80211_sta_flags are evaluated:
1842 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1843 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1844 * %IEEE80211_STA_DISABLE_160MHZ.
1845 * @bssid: the currently connected bssid (for reporting)
1846 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1847 All of them will be filled with if success only.
1848 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1850 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1851 struct ieee802_11_elems *elems,
1852 enum nl80211_band current_band,
1853 u32 sta_flags, u8 *bssid,
1854 struct ieee80211_csa_ie *csa_ie);
1856 /* Suspend/resume and hw reconfiguration */
1857 int ieee80211_reconfig(struct ieee80211_local *local);
1858 void ieee80211_stop_device(struct ieee80211_local *local);
1860 int __ieee80211_suspend(struct ieee80211_hw *hw,
1861 struct cfg80211_wowlan *wowlan);
1863 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1865 struct ieee80211_local *local = hw_to_local(hw);
1867 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1868 !test_bit(SCAN_COMPLETED, &local->scanning),
1869 "%s: resume with hardware scan still in progress\n",
1870 wiphy_name(hw->wiphy));
1872 return ieee80211_reconfig(hw_to_local(hw));
1875 /* utility functions/constants */
1876 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1877 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1878 int rate, int erp, int short_preamble,
1880 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
1881 struct ieee80211_tx_queue_params *qparam,
1883 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1884 bool bss_notify, bool enable_qos);
1885 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1886 struct sta_info *sta, struct sk_buff *skb,
1889 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1890 struct sk_buff *skb, int tid,
1891 enum nl80211_band band, u32 txdata_flags);
1894 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1895 struct sk_buff *skb, int tid,
1896 enum nl80211_band band, u32 txdata_flags)
1899 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band, txdata_flags);
1903 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1904 struct sk_buff *skb, int tid)
1906 struct ieee80211_chanctx_conf *chanctx_conf;
1909 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1910 if (WARN_ON(!chanctx_conf)) {
1916 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1917 chanctx_conf->def.chan->band, 0);
1921 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1922 struct sk_buff *skb)
1924 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1925 ieee80211_tx_skb_tid(sdata, skb, 7);
1928 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1929 struct ieee802_11_elems *elems,
1930 u64 filter, u32 crc);
1931 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1933 struct ieee802_11_elems *elems)
1935 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1939 extern const int ieee802_1d_to_ac[8];
1941 static inline int ieee80211_ac_from_tid(int tid)
1943 return ieee802_1d_to_ac[tid & 7];
1946 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1947 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1948 void ieee80211_dynamic_ps_timer(struct timer_list *t);
1949 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1950 struct ieee80211_sub_if_data *sdata,
1952 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1953 struct ieee80211_hdr *hdr);
1954 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1955 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1957 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1958 unsigned long queues,
1959 enum queue_stop_reason reason,
1961 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1962 struct ieee80211_sub_if_data *sdata,
1963 enum queue_stop_reason reason);
1964 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1965 struct ieee80211_sub_if_data *sdata,
1966 enum queue_stop_reason reason);
1967 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1968 unsigned long queues,
1969 enum queue_stop_reason reason,
1971 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1972 enum queue_stop_reason reason,
1974 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1975 enum queue_stop_reason reason,
1977 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1978 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1979 struct sk_buff *skb);
1980 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1981 struct sk_buff_head *skbs);
1982 void ieee80211_flush_queues(struct ieee80211_local *local,
1983 struct ieee80211_sub_if_data *sdata, bool drop);
1984 void __ieee80211_flush_queues(struct ieee80211_local *local,
1985 struct ieee80211_sub_if_data *sdata,
1986 unsigned int queues, bool drop);
1988 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
1991 * It's unsafe to try to do any work during reconfigure flow.
1992 * When the flow ends the work will be requeued.
1994 if (local->in_reconfig)
1998 * If quiescing is set, we are racing with __ieee80211_suspend.
1999 * __ieee80211_suspend flushes the workers after setting quiescing,
2000 * and we check quiescing / suspended before enqueing new workers.
2001 * We should abort the worker to avoid the races below.
2003 if (local->quiescing)
2007 * We might already be suspended if the following scenario occurs:
2008 * __ieee80211_suspend Control path
2010 * if (local->quiescing)
2012 * local->quiescing = true;
2013 * flush_workqueue();
2015 * local->suspended = true;
2016 * local->quiescing = false;
2017 * worker starts running...
2019 if (local->suspended)
2025 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2026 void ieee80211_txq_set_params(struct ieee80211_local *local);
2027 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2028 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2029 struct sta_info *sta,
2030 struct txq_info *txq, int tid);
2031 void ieee80211_txq_purge(struct ieee80211_local *local,
2032 struct txq_info *txqi);
2033 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2034 struct ieee80211_sub_if_data *sdata);
2035 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2036 struct txq_info *txqi);
2037 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2038 u16 transaction, u16 auth_alg, u16 status,
2039 const u8 *extra, size_t extra_len, const u8 *bssid,
2040 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2042 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2043 const u8 *bssid, u16 stype, u16 reason,
2044 bool send_frame, u8 *frame_buf);
2047 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2048 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2049 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2052 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
2054 struct ieee80211_scan_ies *ie_desc,
2055 const u8 *ie, size_t ie_len,
2056 u8 bands_used, u32 *rate_masks,
2057 struct cfg80211_chan_def *chandef,
2059 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2060 const u8 *src, const u8 *dst,
2062 struct ieee80211_channel *chan,
2063 const u8 *ssid, size_t ssid_len,
2064 const u8 *ie, size_t ie_len,
2066 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2067 struct ieee802_11_elems *elems,
2068 enum nl80211_band band, u32 *basic_rates);
2069 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2070 enum ieee80211_smps_mode smps_mode);
2071 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2072 enum ieee80211_smps_mode smps_mode);
2073 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2074 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2076 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2077 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2079 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2080 const struct cfg80211_chan_def *chandef,
2081 u16 prot_mode, bool rifs_mode);
2082 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2083 const struct cfg80211_chan_def *chandef);
2084 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2086 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2087 const struct cfg80211_chan_def *chandef);
2088 u8 *ieee80211_ie_build_he_cap(u8 *pos,
2089 const struct ieee80211_sta_he_cap *he_cap,
2091 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2092 const struct ieee80211_supported_band *sband,
2093 const u8 *srates, int srates_len, u32 *rates);
2094 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2095 struct sk_buff *skb, bool need_basic,
2096 enum nl80211_band band);
2097 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2098 struct sk_buff *skb, bool need_basic,
2099 enum nl80211_band band);
2100 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2102 /* channel management */
2103 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2104 struct cfg80211_chan_def *chandef);
2105 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper,
2106 struct cfg80211_chan_def *chandef);
2107 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2110 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2111 const struct cfg80211_chan_def *chandef,
2112 enum ieee80211_chanctx_mode mode);
2114 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2115 const struct cfg80211_chan_def *chandef,
2116 enum ieee80211_chanctx_mode mode,
2117 bool radar_required);
2119 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2120 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2123 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2124 const struct cfg80211_chan_def *chandef,
2126 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2127 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2128 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2130 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2131 struct ieee80211_chanctx *ctx);
2133 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2134 struct ieee80211_chanctx *chanctx);
2135 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2136 struct ieee80211_chanctx *ctx);
2137 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2139 void ieee80211_dfs_cac_timer(unsigned long data);
2140 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2141 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2142 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2143 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2144 struct cfg80211_csa_settings *csa_settings);
2146 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2147 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2148 const struct ieee80211_cipher_scheme *
2149 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2150 enum nl80211_iftype iftype);
2151 int ieee80211_cs_headroom(struct ieee80211_local *local,
2152 struct cfg80211_crypto_settings *crypto,
2153 enum nl80211_iftype iftype);
2154 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2155 struct ieee80211_sub_if_data *sdata);
2156 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2157 const struct cfg80211_chan_def *chandef,
2158 enum ieee80211_chanctx_mode chanmode,
2160 int ieee80211_max_num_channels(struct ieee80211_local *local);
2161 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2162 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2163 struct ieee80211_chanctx *ctx);
2166 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2167 const u8 *peer, u8 action_code, u8 dialog_token,
2168 u16 status_code, u32 peer_capability,
2169 bool initiator, const u8 *extra_ies,
2170 size_t extra_ies_len);
2171 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2172 const u8 *peer, enum nl80211_tdls_operation oper);
2173 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2174 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2175 const u8 *addr, u8 oper_class,
2176 struct cfg80211_chan_def *chandef);
2177 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2178 struct net_device *dev,
2180 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2181 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2182 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2183 const u8 *peer, u16 reason);
2184 const char *ieee80211_get_reason_code_string(u16 reason_code);
2186 extern const struct ethtool_ops ieee80211_ethtool_ops;
2188 #ifdef CONFIG_MAC80211_NOINLINE
2189 #define debug_noinline noinline
2191 #define debug_noinline
2194 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2195 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2197 #endif /* IEEE80211_I_H */