1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright 2002-2005, Instant802 Networks, Inc.
4 * Copyright 2005, Devicescape Software, Inc.
5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
6 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net>
7 * Copyright 2013-2015 Intel Mobile Communications GmbH
8 * Copyright (C) 2018-2022 Intel Corporation
14 #include <linux/kernel.h>
15 #include <linux/device.h>
16 #include <linux/if_ether.h>
17 #include <linux/interrupt.h>
18 #include <linux/list.h>
19 #include <linux/netdevice.h>
20 #include <linux/skbuff.h>
21 #include <linux/workqueue.h>
22 #include <linux/types.h>
23 #include <linux/spinlock.h>
24 #include <linux/etherdevice.h>
25 #include <linux/leds.h>
26 #include <linux/idr.h>
27 #include <linux/rhashtable.h>
28 #include <linux/rbtree.h>
29 #include <net/ieee80211_radiotap.h>
30 #include <net/cfg80211.h>
31 #include <net/mac80211.h>
37 extern const struct cfg80211_ops mac80211_config_ops;
39 struct ieee80211_local;
41 /* Maximum number of broadcast/multicast frames to buffer when some of the
42 * associated stations are using power saving. */
43 #define AP_MAX_BC_BUFFER 128
45 /* Maximum number of frames buffered to all STAs, including multicast frames.
46 * Note: increasing this limit increases the potential memory requirement. Each
47 * frame can be up to about 2 kB long. */
48 #define TOTAL_MAX_TX_BUFFER 512
50 /* Required encryption head and tailroom */
51 #define IEEE80211_ENCRYPT_HEADROOM 8
52 #define IEEE80211_ENCRYPT_TAILROOM 18
54 /* power level hasn't been configured (or set to automatic) */
55 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
58 * Some APs experience problems when working with U-APSD. Decreasing the
59 * probability of that happening by using legacy mode for all ACs but VO isn't
62 * Cisco 4410N originally forced us to enable VO by default only because it
63 * treated non-VO ACs as legacy.
65 * However some APs (notably Netgear R7000) silently reclassify packets to
66 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
67 * clients would never see some frames (e.g. ARP responses) or would fetch them
68 * accidentally after a long time.
70 * It makes little sense to enable u-APSD queues by default because it needs
71 * userspace applications to be aware of it to actually take advantage of the
72 * possible additional powersavings. Implicitly depending on driver autotrigger
73 * frame support doesn't make much sense.
75 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
77 #define IEEE80211_DEFAULT_MAX_SP_LEN \
78 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
80 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
82 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
84 #define IEEE80211_MAX_NAN_INSTANCE_ID 255
88 * Keep a station's queues on the active list for deficit accounting purposes
89 * if it was active or queued during the last 100ms
91 #define AIRTIME_ACTIVE_DURATION (HZ / 10)
93 struct ieee80211_bss {
94 u32 device_ts_beacon, device_ts_presp;
99 #define IEEE80211_MAX_SUPP_RATES 32
100 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
101 size_t supp_rates_len;
102 struct ieee80211_rate *beacon_rate;
107 * During association, we save an ERP value from a probe response so
108 * that we can feed ERP info to the driver when handling the
109 * association completes. these fields probably won't be up-to-date
110 * otherwise, you probably don't want to use them.
115 /* Keep track of the corruption of the last beacon/probe response. */
118 /* Keep track of what bits of information we have valid info for. */
123 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
124 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
125 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
127 * These are bss flags that are attached to a bss in the
128 * @corrupt_data field of &struct ieee80211_bss.
130 enum ieee80211_bss_corrupt_data_flags {
131 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
132 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
136 * enum ieee80211_valid_data_flags - BSS valid data flags
137 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
138 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
139 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
141 * These are bss flags that are attached to a bss in the
142 * @valid_data field of &struct ieee80211_bss. They show which parts
143 * of the data structure were received as a result of an un-corrupted
144 * beacon/probe response.
146 enum ieee80211_bss_valid_data_flags {
147 IEEE80211_BSS_VALID_WMM = BIT(1),
148 IEEE80211_BSS_VALID_RATES = BIT(2),
149 IEEE80211_BSS_VALID_ERP = BIT(3)
152 typedef unsigned __bitwise ieee80211_tx_result;
153 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
154 #define TX_DROP ((__force ieee80211_tx_result) 1u)
155 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
157 #define IEEE80211_TX_UNICAST BIT(1)
158 #define IEEE80211_TX_PS_BUFFERED BIT(2)
160 struct ieee80211_tx_data {
162 struct sk_buff_head skbs;
163 struct ieee80211_local *local;
164 struct ieee80211_sub_if_data *sdata;
165 struct sta_info *sta;
166 struct ieee80211_key *key;
167 struct ieee80211_tx_rate rate;
173 typedef unsigned __bitwise ieee80211_rx_result;
174 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
175 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
176 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
177 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
180 * enum ieee80211_packet_rx_flags - packet RX flags
181 * @IEEE80211_RX_AMSDU: a-MSDU packet
182 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
183 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
185 * These are per-frame flags that are attached to a frame in the
186 * @rx_flags field of &struct ieee80211_rx_status.
188 enum ieee80211_packet_rx_flags {
189 IEEE80211_RX_AMSDU = BIT(3),
190 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
191 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
195 * enum ieee80211_rx_flags - RX data flags
197 * @IEEE80211_RX_CMNTR: received on cooked monitor already
198 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
199 * to cfg80211_report_obss_beacon().
201 * These flags are used across handling multiple interfaces
202 * for a single frame.
204 enum ieee80211_rx_flags {
205 IEEE80211_RX_CMNTR = BIT(0),
206 IEEE80211_RX_BEACON_REPORTED = BIT(1),
209 struct ieee80211_rx_data {
210 struct list_head *list;
212 struct ieee80211_local *local;
213 struct ieee80211_sub_if_data *sdata;
214 struct sta_info *sta;
215 struct ieee80211_key *key;
220 * Index into sequence numbers array, 0..16
221 * since the last (16) is used for non-QoS,
222 * will be 16 on non-QoS frames.
227 * Index into the security IV/PN arrays, 0..16
228 * since the last (16) is used for CCMP-encrypted
229 * management frames, will be set to 16 on mgmt
230 * frames and 0 on non-QoS frames.
242 u8 pn[IEEE80211_CCMP_PN_LEN];
247 struct ieee80211_csa_settings {
248 const u16 *counter_offsets_beacon;
249 const u16 *counter_offsets_presp;
251 int n_counter_offsets_beacon;
252 int n_counter_offsets_presp;
257 struct ieee80211_color_change_settings {
258 u16 counter_offset_beacon;
259 u16 counter_offset_presp;
265 int head_len, tail_len;
266 struct ieee80211_meshconf_ie *meshconf;
267 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
268 u8 cntdwn_current_counter;
269 struct cfg80211_mbssid_elems *mbssid_ies;
270 struct rcu_head rcu_head;
274 struct rcu_head rcu_head;
276 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
280 struct fils_discovery_data {
281 struct rcu_head rcu_head;
286 struct unsol_bcast_probe_resp_data {
287 struct rcu_head rcu_head;
293 /* yes, this looks ugly, but guarantees that we can later use
295 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
296 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
297 __aligned(__alignof__(unsigned long));
298 struct sk_buff_head bc_buf;
299 atomic_t num_sta_ps; /* number of stations in PS mode */
304 struct ieee80211_if_ap {
305 struct list_head vlans; /* write-protected with RTNL and local->mtx */
308 atomic_t num_mcast_sta; /* number of stations receiving multicast */
310 bool multicast_to_unicast;
314 struct ieee80211_if_vlan {
315 struct list_head list; /* write-protected with RTNL and local->mtx */
317 /* used for all tx if the VLAN is configured to 4-addr mode */
318 struct sta_info __rcu *sta;
319 atomic_t num_mcast_sta; /* number of stations receiving multicast */
323 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
324 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
325 __u32 fwded_frames; /* Mesh total forwarded frames */
326 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
327 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
328 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
331 #define PREQ_Q_F_START 0x1
332 #define PREQ_Q_F_REFRESH 0x2
333 struct mesh_preq_queue {
334 struct list_head list;
339 struct ieee80211_roc_work {
340 struct list_head list;
342 struct ieee80211_sub_if_data *sdata;
344 struct ieee80211_channel *chan;
346 bool started, abort, hw_begun, notified;
349 unsigned long start_time;
351 u32 duration, req_duration;
352 struct sk_buff *frame;
353 u64 cookie, mgmt_tx_cookie;
354 enum ieee80211_roc_type type;
357 /* flags used in struct ieee80211_if_managed.flags */
358 enum ieee80211_sta_flags {
359 IEEE80211_STA_CONNECTION_POLL = BIT(1),
360 IEEE80211_STA_CONTROL_PORT = BIT(2),
361 IEEE80211_STA_MFP_ENABLED = BIT(6),
362 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
363 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
364 IEEE80211_STA_ENABLE_RRM = BIT(15),
367 typedef u32 __bitwise ieee80211_conn_flags_t;
369 enum ieee80211_conn_flags {
370 IEEE80211_CONN_DISABLE_HT = (__force ieee80211_conn_flags_t)BIT(0),
371 IEEE80211_CONN_DISABLE_40MHZ = (__force ieee80211_conn_flags_t)BIT(1),
372 IEEE80211_CONN_DISABLE_VHT = (__force ieee80211_conn_flags_t)BIT(2),
373 IEEE80211_CONN_DISABLE_80P80MHZ = (__force ieee80211_conn_flags_t)BIT(3),
374 IEEE80211_CONN_DISABLE_160MHZ = (__force ieee80211_conn_flags_t)BIT(4),
375 IEEE80211_CONN_DISABLE_HE = (__force ieee80211_conn_flags_t)BIT(5),
376 IEEE80211_CONN_DISABLE_EHT = (__force ieee80211_conn_flags_t)BIT(6),
377 IEEE80211_CONN_DISABLE_320MHZ = (__force ieee80211_conn_flags_t)BIT(7),
380 struct ieee80211_mgd_auth_data {
381 struct cfg80211_bss *bss;
382 unsigned long timeout;
384 u16 algorithm, expected_transaction;
386 u8 key[WLAN_KEY_LEN_WEP104];
390 bool timeout_started;
392 u16 sae_trans, sae_status;
397 struct ieee80211_mgd_assoc_data {
398 struct cfg80211_bss *bss;
399 const u8 *supp_rates;
401 unsigned long timeout;
405 u8 prev_bssid[ETH_ALEN];
406 u8 ssid[IEEE80211_MAX_SSID_LEN];
412 bool timeout_started;
416 struct ieee80211_vht_cap ap_vht_cap;
418 u8 fils_nonces[2 * FILS_NONCE_LEN];
419 u8 fils_kek[FILS_MAX_KEK_LEN];
426 struct ieee80211_sta_tx_tspec {
427 /* timestamp of the first packet in the time slice */
428 unsigned long time_slice_start;
430 u32 admitted_time; /* in usecs, unlike over the air */
432 s8 up; /* signed to be able to invalidate with -1 during teardown */
434 /* consumed TX time in microseconds in the time slice */
435 u32 consumed_tx_time;
437 TX_TSPEC_ACTION_NONE = 0,
438 TX_TSPEC_ACTION_DOWNGRADE,
439 TX_TSPEC_ACTION_STOP_DOWNGRADE,
444 DECLARE_EWMA(beacon_signal, 4, 4)
446 struct ieee80211_if_managed {
447 struct timer_list timer;
448 struct timer_list conn_mon_timer;
449 struct timer_list bcn_mon_timer;
450 struct work_struct monitor_work;
451 struct work_struct beacon_connection_loss_work;
452 struct work_struct csa_connection_drop_work;
454 unsigned long beacon_timeout;
455 unsigned long probe_timeout;
456 int probe_send_count;
457 bool nullfunc_failed;
458 u8 connection_loss:1,
463 struct ieee80211_mgd_auth_data *auth_data;
464 struct ieee80211_mgd_assoc_data *assoc_data;
466 bool powersave; /* powersave requested for this iface */
467 bool broken_ap; /* AP is broken -- turn off powersave */
472 bool status_received;
476 IEEE80211_MFP_DISABLED,
477 IEEE80211_MFP_OPTIONAL,
478 IEEE80211_MFP_REQUIRED
479 } mfp; /* management frame protection */
482 * Bitmask of enabled u-apsd queues,
483 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
486 unsigned int uapsd_queues;
489 * Maximum number of buffered frames AP can deliver during a
490 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
491 * Needs a new association to take effect.
493 unsigned int uapsd_max_sp_len;
498 * State variables for keeping track of RSSI of the AP currently
499 * connected to and informing driver when RSSI has gone
500 * below/above a certain threshold.
502 int rssi_min_thold, rssi_max_thold;
504 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
505 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
506 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
507 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
508 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
509 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
512 u8 tdls_peer[ETH_ALEN] __aligned(2);
513 struct delayed_work tdls_peer_del_work;
514 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
515 struct sk_buff *teardown_skb; /* A copy to send through the AP */
516 spinlock_t teardown_lock; /* To lock changing teardown_skb */
517 bool tdls_wider_bw_prohibited;
519 /* WMM-AC TSPEC support */
520 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
521 /* Use a separate work struct so that we can do something here
522 * while the sdata->work is flushing the queues, for example.
523 * otherwise, in scenarios where we hardly get any traffic out
524 * on the BE queue, but there's a lot of VO traffic, we might
525 * get stuck in a downgraded situation and flush takes forever.
527 struct delayed_work tx_tspec_wk;
529 /* Information elements from the last transmitted (Re)Association
533 size_t assoc_req_ies_len;
536 struct ieee80211_if_ibss {
537 struct timer_list timer;
538 struct work_struct csa_connection_drop_work;
540 unsigned long last_scan_completed;
549 bool userspace_handles_dfs;
551 u8 bssid[ETH_ALEN] __aligned(2);
552 u8 ssid[IEEE80211_MAX_SSID_LEN];
555 struct cfg80211_chan_def chandef;
557 unsigned long ibss_join_req;
558 /* probe response/beacon for IBSS */
559 struct beacon_data __rcu *presp;
561 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
562 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
564 spinlock_t incomplete_lock;
565 struct list_head incomplete_stations;
568 IEEE80211_IBSS_MLME_SEARCH,
569 IEEE80211_IBSS_MLME_JOINED,
574 * struct ieee80211_if_ocb - OCB mode state
576 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
577 * @wrkq_flags: OCB deferred task action
578 * @incomplete_lock: delayed STA insertion lock
579 * @incomplete_stations: list of STAs waiting for delayed insertion
580 * @joined: indication if the interface is connected to an OCB network
582 struct ieee80211_if_ocb {
583 struct timer_list housekeeping_timer;
584 unsigned long wrkq_flags;
586 spinlock_t incomplete_lock;
587 struct list_head incomplete_stations;
593 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
595 * these declarations define the interface, which enables
596 * vendor-specific mesh synchronization
599 struct ieee802_11_elems;
600 struct ieee80211_mesh_sync_ops {
601 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype,
602 struct ieee80211_mgmt *mgmt, unsigned int len,
603 const struct ieee80211_meshconf_ie *mesh_cfg,
604 struct ieee80211_rx_status *rx_status);
606 /* should be called with beacon_data under RCU read lock */
607 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
608 struct beacon_data *beacon);
609 /* add other framework functions here */
612 struct mesh_csa_settings {
613 struct rcu_head rcu_head;
614 struct cfg80211_csa_settings settings;
620 * @known_gates: list of known mesh gates and their mpaths by the station. The
621 * gate's mpath may or may not be resolved and active.
622 * @gates_lock: protects updates to known_gates
623 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
624 * @walk_head: linked list containing all mesh_path objects
625 * @walk_lock: lock protecting walk_head
626 * @entries: number of entries in the table
629 struct hlist_head known_gates;
630 spinlock_t gates_lock;
631 struct rhashtable rhead;
632 struct hlist_head walk_head;
633 spinlock_t walk_lock;
634 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
637 struct ieee80211_if_mesh {
638 struct timer_list housekeeping_timer;
639 struct timer_list mesh_path_timer;
640 struct timer_list mesh_path_root_timer;
642 unsigned long wrkq_flags;
643 unsigned long mbss_changed;
645 bool userspace_handles_dfs;
647 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
649 /* Active Path Selection Protocol Identifier */
651 /* Active Path Selection Metric Identifier */
653 /* Congestion Control Mode Identifier */
655 /* Synchronization Protocol Identifier */
657 /* Authentication Protocol Identifier */
659 /* Local mesh Sequence Number */
661 /* Last used PREQ ID */
664 /* Timestamp of last SN update */
665 unsigned long last_sn_update;
666 /* Time when it's ok to send next PERR */
667 unsigned long next_perr;
668 /* Timestamp of last PREQ sent */
669 unsigned long last_preq;
670 struct mesh_rmc *rmc;
671 spinlock_t mesh_preq_queue_lock;
672 struct mesh_preq_queue preq_queue;
674 struct mesh_stats mshstats;
675 struct mesh_config mshcfg;
676 atomic_t estab_plinks;
678 bool accepting_plinks;
680 struct beacon_data __rcu *beacon;
684 IEEE80211_MESH_SEC_NONE = 0x0,
685 IEEE80211_MESH_SEC_AUTHED = 0x1,
686 IEEE80211_MESH_SEC_SECURED = 0x2,
689 /* Extensible Synchronization Framework */
690 const struct ieee80211_mesh_sync_ops *sync_ops;
691 s64 sync_offset_clockdrift_max;
692 spinlock_t sync_offset_lock;
693 /* mesh power save */
694 enum nl80211_mesh_power_mode nonpeer_pm;
695 int ps_peers_light_sleep;
696 int ps_peers_deep_sleep;
698 /* Channel Switching Support */
699 struct mesh_csa_settings __rcu *csa;
701 IEEE80211_MESH_CSA_ROLE_NONE,
702 IEEE80211_MESH_CSA_ROLE_INIT,
703 IEEE80211_MESH_CSA_ROLE_REPEATER,
708 /* offset from skb->data while building IE */
711 struct mesh_table mesh_paths;
712 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */
713 int mesh_paths_generation;
714 int mpp_paths_generation;
717 #ifdef CONFIG_MAC80211_MESH
718 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
719 do { (msh)->mshstats.name++; } while (0)
721 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
726 * enum ieee80211_sub_if_data_flags - virtual interface flags
728 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
729 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
730 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
731 * associated stations and deliver multicast frames both
732 * back to wireless media and to the local net stack.
733 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
734 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
735 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart
738 enum ieee80211_sub_if_data_flags {
739 IEEE80211_SDATA_ALLMULTI = BIT(0),
740 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
741 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
742 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
743 IEEE80211_SDATA_IN_DRIVER = BIT(5),
744 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6),
748 * enum ieee80211_sdata_state_bits - virtual interface state bits
749 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
750 * mirrors netif_running() but is separate for interface type
751 * change handling while the interface is up
752 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
753 * mode, so queues are stopped
754 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
755 * to offchannel, reset when offchannel returns
757 enum ieee80211_sdata_state_bits {
759 SDATA_STATE_OFFCHANNEL,
760 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
764 * enum ieee80211_chanctx_mode - channel context configuration mode
766 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
767 * multiple interfaces
768 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
769 * only by a single interface. This can be used for example for
770 * non-fixed channel IBSS.
772 enum ieee80211_chanctx_mode {
773 IEEE80211_CHANCTX_SHARED,
774 IEEE80211_CHANCTX_EXCLUSIVE
778 * enum ieee80211_chanctx_replace_state - channel context replacement state
780 * This is used for channel context in-place reservations that require channel
781 * context switch/swap.
783 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
784 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
785 * by a (not yet registered) channel context pointed by %replace_ctx.
786 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
787 * replaces an existing channel context pointed to by %replace_ctx.
789 enum ieee80211_chanctx_replace_state {
790 IEEE80211_CHANCTX_REPLACE_NONE,
791 IEEE80211_CHANCTX_WILL_BE_REPLACED,
792 IEEE80211_CHANCTX_REPLACES_OTHER,
795 struct ieee80211_chanctx {
796 struct list_head list;
797 struct rcu_head rcu_head;
799 struct list_head assigned_links;
800 struct list_head reserved_links;
802 enum ieee80211_chanctx_replace_state replace_state;
803 struct ieee80211_chanctx *replace_ctx;
805 enum ieee80211_chanctx_mode mode;
808 struct ieee80211_chanctx_conf conf;
811 struct mac80211_qos_map {
812 struct cfg80211_qos_map qos_map;
813 struct rcu_head rcu_head;
816 enum txq_info_flags {
819 IEEE80211_TXQ_NO_AMSDU,
820 IEEE80211_TXQ_STOP_NETIF_TX,
824 * struct txq_info - per tid queue
826 * @tin: contains packets split into multiple flows
827 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
828 * a fq_flow which is already owned by a different tin
829 * @def_cvars: codel vars for @def_flow
830 * @frags: used to keep fragments created after dequeue
831 * @schedule_order: used with ieee80211_local->active_txqs
832 * @schedule_round: counter to prevent infinite loops on TXQ scheduling
836 struct codel_vars def_cvars;
837 struct codel_stats cstats;
840 struct list_head schedule_order;
842 struct sk_buff_head frags;
847 struct ieee80211_txq txq;
850 struct ieee80211_if_mntr {
852 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
854 struct list_head list;
858 * struct ieee80211_if_nan - NAN state
860 * @conf: current NAN configuration
861 * @func_ids: a bitmap of available instance_id's
863 struct ieee80211_if_nan {
864 struct cfg80211_nan_conf conf;
866 /* protects function_inst_ids */
867 spinlock_t func_lock;
868 struct idr function_inst_ids;
871 struct ieee80211_link_data_managed {
872 u8 bssid[ETH_ALEN] __aligned(2);
875 enum ieee80211_smps_mode req_smps, /* requested smps mode */
876 driver_smps_mode; /* smps mode request */
878 ieee80211_conn_flags_t conn_flags;
882 bool tdls_chan_switch_prohibited;
885 bool tracking_signal_avg;
886 bool disable_wmm_tracking;
888 bool csa_waiting_bcn;
889 bool csa_ignored_same_chan;
890 struct timer_list chswitch_timer;
891 struct work_struct chswitch_work;
893 struct work_struct request_smps_work;
894 bool beacon_crc_valid;
896 struct ewma_beacon_signal ave_beacon_signal;
897 int last_ave_beacon_signal;
900 * Number of Beacon frames used in ave_beacon_signal. This can be used
901 * to avoid generating less reliable cqm events that would be based
902 * only on couple of received frames.
904 unsigned int count_beacon_signal;
906 /* Number of times beacon loss was invoked. */
907 unsigned int beacon_loss_count;
910 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
911 * that triggered a cqm event. 0 indicates that no event has been
912 * generated for the current association.
914 int last_cqm_event_signal;
916 int wmm_last_param_set;
917 int mu_edca_last_param_set;
919 struct cfg80211_bss *bss;
922 struct ieee80211_link_data_ap {
923 struct beacon_data __rcu *beacon;
924 struct probe_resp __rcu *probe_resp;
925 struct fils_discovery_data __rcu *fils_discovery;
926 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
928 /* to be used after channel switch. */
929 struct cfg80211_beacon_data *next_beacon;
932 struct ieee80211_link_data {
933 struct ieee80211_sub_if_data *sdata;
934 unsigned int link_id;
936 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
937 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
939 /* multicast keys only */
940 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS +
941 NUM_DEFAULT_MGMT_KEYS +
942 NUM_DEFAULT_BEACON_KEYS];
943 struct ieee80211_key __rcu *default_multicast_key;
944 struct ieee80211_key __rcu *default_mgmt_key;
945 struct ieee80211_key __rcu *default_beacon_key;
947 struct work_struct csa_finalize_work;
948 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
949 struct cfg80211_chan_def csa_chandef;
951 struct work_struct color_change_finalize_work;
953 /* context reservation -- protected with chanctx_mtx */
954 struct ieee80211_chanctx *reserved_chanctx;
955 struct cfg80211_chan_def reserved_chandef;
956 bool reserved_radar_required;
960 enum ieee80211_smps_mode smps_mode;
962 int user_power_level; /* in dBm */
963 int ap_power_level; /* in dBm */
966 struct delayed_work dfs_cac_timer_work;
969 struct ieee80211_link_data_managed mgd;
970 struct ieee80211_link_data_ap ap;
973 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
975 struct ieee80211_bss_conf *conf;
978 struct ieee80211_sub_if_data {
979 struct list_head list;
981 struct wireless_dev wdev;
984 struct list_head key_list;
986 /* count for keys needing tailroom space allocation */
987 int crypto_tx_tailroom_needed_cnt;
988 int crypto_tx_tailroom_pending_dec;
989 struct delayed_work dec_tailroom_needed_wk;
991 struct net_device *dev;
992 struct ieee80211_local *local;
1000 struct ieee80211_fragment_cache frags;
1002 /* TID bitmap for NoAck policy */
1005 /* bit field of ACM bits (BIT(802.1D tag)) */
1008 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS];
1009 struct ieee80211_key __rcu *default_unicast_key;
1011 u16 sequence_number;
1012 __be16 control_port_protocol;
1013 bool control_port_no_encrypt;
1014 bool control_port_no_preauth;
1015 bool control_port_over_nl80211;
1017 atomic_t num_tx_queued;
1018 struct mac80211_qos_map __rcu *qos_map;
1020 /* used to reconfigure hardware SM PS */
1021 struct work_struct recalc_smps;
1023 struct work_struct work;
1024 struct sk_buff_head skb_queue;
1025 struct sk_buff_head status_queue;
1028 * AP this belongs to: self in AP mode and
1029 * corresponding AP in VLAN mode, NULL for
1030 * all others (might be needed later in IBSS)
1032 struct ieee80211_if_ap *bss;
1034 /* bitmap of allowed (non-MCS) rate indexes for rate control */
1035 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
1037 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
1038 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
1040 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
1041 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
1043 /* Beacon frame (non-MCS) rate (as a bitmap) */
1044 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
1045 bool beacon_rate_set;
1048 struct ieee80211_if_ap ap;
1049 struct ieee80211_if_vlan vlan;
1050 struct ieee80211_if_managed mgd;
1051 struct ieee80211_if_ibss ibss;
1052 struct ieee80211_if_mesh mesh;
1053 struct ieee80211_if_ocb ocb;
1054 struct ieee80211_if_mntr mntr;
1055 struct ieee80211_if_nan nan;
1058 struct ieee80211_link_data deflink;
1059 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS];
1061 #ifdef CONFIG_MAC80211_DEBUGFS
1063 struct dentry *subdir_stations;
1064 struct dentry *default_unicast_key;
1065 struct dentry *default_multicast_key;
1066 struct dentry *default_mgmt_key;
1067 struct dentry *default_beacon_key;
1071 /* must be last, dynamically sized area in this! */
1072 struct ieee80211_vif vif;
1076 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1078 return container_of(p, struct ieee80211_sub_if_data, vif);
1081 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1082 __acquires(&sdata->wdev.mtx)
1084 mutex_lock(&sdata->wdev.mtx);
1085 __acquire(&sdata->wdev.mtx);
1088 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1089 __releases(&sdata->wdev.mtx)
1091 mutex_unlock(&sdata->wdev.mtx);
1092 __release(&sdata->wdev.mtx);
1095 #define sdata_dereference(p, sdata) \
1096 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1099 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1101 lockdep_assert_held(&sdata->wdev.mtx);
1105 ieee80211_chanwidth_get_shift(enum nl80211_chan_width width)
1108 case NL80211_CHAN_WIDTH_5:
1110 case NL80211_CHAN_WIDTH_10:
1118 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1120 return ieee80211_chanwidth_get_shift(chandef->width);
1124 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1126 struct ieee80211_chanctx_conf *chanctx_conf;
1130 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
1132 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1139 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems)
1146 for (i = 0; i < elems->cnt; i++)
1147 len += elems->elem[i].len;
1153 IEEE80211_RX_MSG = 1,
1154 IEEE80211_TX_STATUS_MSG = 2,
1157 enum queue_stop_reason {
1158 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1159 IEEE80211_QUEUE_STOP_REASON_PS,
1160 IEEE80211_QUEUE_STOP_REASON_CSA,
1161 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1162 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1163 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1164 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1165 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1166 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1167 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1168 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1170 IEEE80211_QUEUE_STOP_REASONS,
1173 #ifdef CONFIG_MAC80211_LEDS
1174 struct tpt_led_trigger {
1176 const struct ieee80211_tpt_blink *blink_table;
1177 unsigned int blink_table_len;
1178 struct timer_list timer;
1179 struct ieee80211_local *local;
1180 unsigned long prev_traffic;
1181 unsigned long tx_bytes, rx_bytes;
1182 unsigned int active, want;
1188 * mac80211 scan flags - currently active scan mode
1190 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1191 * well be on the operating channel
1192 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1193 * determine if we are on the operating channel or not
1194 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1195 * channel. This should not interrupt normal traffic.
1196 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1197 * that the scan completed.
1198 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1199 * a scan complete for an aborted scan.
1200 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1202 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR
1203 * and could send a probe request after receiving a beacon.
1204 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request
1209 SCAN_ONCHANNEL_SCANNING,
1218 * enum mac80211_scan_state - scan state machine states
1220 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1221 * determines if we should keep on scanning or switch back to the
1223 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1224 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1225 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1227 * @SCAN_RESUME: Resume the scan and scan the next channel
1228 * @SCAN_ABORT: Abort the scan and go back to operating channel
1230 enum mac80211_scan_state {
1239 DECLARE_STATIC_KEY_FALSE(aql_disable);
1241 struct ieee80211_local {
1242 /* embed the driver visible part.
1243 * don't cast (use the static inlines below), but we keep
1244 * it first anyway so they become a no-op */
1245 struct ieee80211_hw hw;
1248 struct codel_vars *cvars;
1249 struct codel_params cparams;
1251 /* protects active_txqs and txqi->schedule_order */
1252 spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1253 struct list_head active_txqs[IEEE80211_NUM_ACS];
1254 u16 schedule_round[IEEE80211_NUM_ACS];
1257 u32 aql_txq_limit_low[IEEE80211_NUM_ACS];
1258 u32 aql_txq_limit_high[IEEE80211_NUM_ACS];
1260 atomic_t aql_total_pending_airtime;
1261 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS];
1263 const struct ieee80211_ops *ops;
1266 * private workqueue to mac80211. mac80211 makes this accessible
1267 * via ieee80211_queue_work()
1269 struct workqueue_struct *workqueue;
1271 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1272 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1273 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1274 spinlock_t queue_stop_reason_lock;
1277 int monitors, cooked_mntrs;
1278 /* number of interfaces with corresponding FIF_ flags */
1279 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1282 bool rx_mcast_action_reg;
1283 unsigned int filter_flags; /* FIF_* */
1285 bool wiphy_ciphers_allocated;
1289 /* protects the aggregated multicast list and filter calls */
1290 spinlock_t filter_lock;
1292 /* used for uploading changed mc list */
1293 struct work_struct reconfig_filter;
1295 /* aggregated multicast list */
1296 struct netdev_hw_addr_list mc_list;
1298 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1301 * suspended is true if we finished all the suspend _and_ we have
1302 * not yet come up from resume. This is to be used by mac80211
1303 * to ensure driver sanity during suspend and mac80211's own
1304 * sanity. It can eventually be used for WoW as well.
1308 /* suspending is true during the whole suspend process */
1312 * Resuming is true while suspended, but when we're reprogramming the
1313 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1314 * again even though some other parts of the stack are still suspended
1315 * and we still drop received frames to avoid waking the stack.
1320 * quiescing is true during the suspend process _only_ to
1321 * ease timer cancelling etc.
1325 /* device is started */
1328 /* device is during a HW reconfig */
1331 /* wowlan is enabled -- don't reconfig on resume */
1334 struct work_struct radar_detected_work;
1336 /* number of RX chains the hardware has */
1339 /* bitmap of which sbands were copied */
1342 int tx_headroom; /* required headroom for hardware/radiotap */
1344 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1345 * added to skb_queue will be processed, but frames in
1346 * skb_queue_unreliable may be dropped if the total length of these
1347 * queues increases over the limit. */
1348 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1349 struct tasklet_struct tasklet;
1350 struct sk_buff_head skb_queue;
1351 struct sk_buff_head skb_queue_unreliable;
1353 spinlock_t rx_path_lock;
1357 * The mutex only protects the list, hash table and
1358 * counter, reads are done with RCU.
1360 struct mutex sta_mtx;
1361 spinlock_t tim_lock;
1362 unsigned long num_sta;
1363 struct list_head sta_list;
1364 struct rhltable sta_hash;
1365 struct rhltable link_sta_hash;
1366 struct timer_list sta_cleanup;
1369 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1370 struct tasklet_struct tx_pending_tasklet;
1371 struct tasklet_struct wake_txqs_tasklet;
1373 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1375 /* number of interfaces with allmulti RX */
1376 atomic_t iff_allmultis;
1378 struct rate_control_ref *rate_ctrl;
1380 struct arc4_ctx wep_tx_ctx;
1381 struct arc4_ctx wep_rx_ctx;
1385 struct list_head interfaces;
1386 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1387 struct mutex iflist_mtx;
1390 * Key mutex, protects sdata's key_list and sta_info's
1391 * key pointers and ptk_idx (write access, they're RCU.)
1393 struct mutex key_mtx;
1395 /* mutex for scan and work locking */
1398 /* Scanning and BSS list */
1399 unsigned long scanning;
1400 struct cfg80211_ssid scan_ssid;
1401 struct cfg80211_scan_request *int_scan_req;
1402 struct cfg80211_scan_request __rcu *scan_req;
1403 struct ieee80211_scan_request *hw_scan_req;
1404 struct cfg80211_chan_def scan_chandef;
1405 enum nl80211_band hw_scan_band;
1406 int scan_channel_idx;
1408 int hw_scan_ies_bufsize;
1409 struct cfg80211_scan_info scan_info;
1411 struct work_struct sched_scan_stopped_work;
1412 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1413 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1414 u8 scan_addr[ETH_ALEN];
1416 unsigned long leave_oper_channel_time;
1417 enum mac80211_scan_state next_scan_state;
1418 struct delayed_work scan_work;
1419 struct ieee80211_sub_if_data __rcu *scan_sdata;
1420 /* For backward compatibility only -- do not use */
1421 struct cfg80211_chan_def _oper_chandef;
1423 /* Temporary remain-on-channel for off-channel operations */
1424 struct ieee80211_channel *tmp_channel;
1426 /* channel contexts */
1427 struct list_head chanctx_list;
1428 struct mutex chanctx_mtx;
1430 #ifdef CONFIG_MAC80211_LEDS
1431 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1432 struct led_trigger tpt_led;
1433 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1434 atomic_t radio_led_active, tpt_led_active;
1435 struct tpt_led_trigger *tpt_led_trigger;
1438 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1440 /* dot11CountersTable */
1441 u32 dot11TransmittedFragmentCount;
1442 u32 dot11MulticastTransmittedFrameCount;
1443 u32 dot11FailedCount;
1444 u32 dot11RetryCount;
1445 u32 dot11MultipleRetryCount;
1446 u32 dot11FrameDuplicateCount;
1447 u32 dot11ReceivedFragmentCount;
1448 u32 dot11MulticastReceivedFrameCount;
1449 u32 dot11TransmittedFrameCount;
1451 /* TX/RX handler statistics */
1452 unsigned int tx_handlers_drop;
1453 unsigned int tx_handlers_queued;
1454 unsigned int tx_handlers_drop_wep;
1455 unsigned int tx_handlers_drop_not_assoc;
1456 unsigned int tx_handlers_drop_unauth_port;
1457 unsigned int rx_handlers_drop;
1458 unsigned int rx_handlers_queued;
1459 unsigned int rx_handlers_drop_nullfunc;
1460 unsigned int rx_handlers_drop_defrag;
1461 unsigned int tx_expand_skb_head;
1462 unsigned int tx_expand_skb_head_cloned;
1463 unsigned int rx_expand_skb_head_defrag;
1464 unsigned int rx_handlers_fragments;
1465 unsigned int tx_status_drop;
1466 #define I802_DEBUG_INC(c) (c)++
1467 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1468 #define I802_DEBUG_INC(c) do { } while (0)
1469 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1472 int total_ps_buffered; /* total number of all buffered unicast and
1473 * multicast packets for power saving stations
1478 * PS can only be enabled when we have exactly one managed
1479 * interface (and monitors) in PS, this then points there.
1481 struct ieee80211_sub_if_data *ps_sdata;
1482 struct work_struct dynamic_ps_enable_work;
1483 struct work_struct dynamic_ps_disable_work;
1484 struct timer_list dynamic_ps_timer;
1485 struct notifier_block ifa_notifier;
1486 struct notifier_block ifa6_notifier;
1489 * The dynamic ps timeout configured from user space via WEXT -
1490 * this will override whatever chosen by mac80211 internally.
1492 int dynamic_ps_forced_timeout;
1494 int user_power_level; /* in dBm, for all interfaces */
1496 enum ieee80211_smps_mode smps_mode;
1498 struct work_struct restart_work;
1500 #ifdef CONFIG_MAC80211_DEBUGFS
1501 struct local_debugfsdentries {
1502 struct dentry *rcdir;
1503 struct dentry *keys;
1505 bool force_tx_status;
1509 * Remain-on-channel support
1511 struct delayed_work roc_work;
1512 struct list_head roc_list;
1513 struct work_struct hw_roc_start, hw_roc_done;
1514 unsigned long hw_roc_start_time;
1515 u64 roc_cookie_counter;
1517 struct idr ack_status_frames;
1518 spinlock_t ack_status_lock;
1520 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1522 /* virtual monitor interface */
1523 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1524 struct cfg80211_chan_def monitor_chandef;
1526 /* extended capabilities provided by mac80211 */
1530 static inline struct ieee80211_sub_if_data *
1531 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev)
1533 return netdev_priv(dev);
1536 static inline struct ieee80211_sub_if_data *
1537 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1539 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1542 static inline struct ieee80211_supported_band *
1543 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1545 struct ieee80211_local *local = sdata->local;
1546 struct ieee80211_chanctx_conf *chanctx_conf;
1547 enum nl80211_band band;
1549 WARN_ON(sdata->vif.valid_links);
1552 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
1554 if (!chanctx_conf) {
1559 band = chanctx_conf->def.chan->band;
1562 return local->hw.wiphy->bands[band];
1565 static inline struct ieee80211_supported_band *
1566 ieee80211_get_link_sband(struct ieee80211_link_data *link)
1568 struct ieee80211_local *local = link->sdata->local;
1569 struct ieee80211_chanctx_conf *chanctx_conf;
1570 enum nl80211_band band;
1573 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
1574 if (!chanctx_conf) {
1579 band = chanctx_conf->def.chan->band;
1582 return local->hw.wiphy->bands[band];
1585 /* this struct holds the value parsing from channel switch IE */
1586 struct ieee80211_csa_ie {
1587 struct cfg80211_chan_def chandef;
1593 u32 max_switch_time;
1596 /* Parsed Information Elements */
1597 struct ieee802_11_elems {
1602 /* pointers to IEs */
1603 const struct ieee80211_tdls_lnkie *lnk_id;
1604 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1605 const u8 *ext_capab;
1607 const u8 *supp_rates;
1608 const u8 *ds_params;
1609 const struct ieee80211_tim_ie *tim;
1613 const u8 *ext_supp_rates;
1615 const u8 *wmm_param;
1616 const struct ieee80211_ht_cap *ht_cap_elem;
1617 const struct ieee80211_ht_operation *ht_operation;
1618 const struct ieee80211_vht_cap *vht_cap_elem;
1619 const struct ieee80211_vht_operation *vht_operation;
1620 const struct ieee80211_meshconf_ie *mesh_config;
1622 const struct ieee80211_he_operation *he_operation;
1623 const struct ieee80211_he_spr *he_spr;
1624 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1625 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1626 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT];
1627 const u8 *uora_element;
1630 const __le16 *awake_window;
1634 const struct ieee80211_rann_ie *rann;
1635 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1636 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1637 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1638 const u8 *max_channel_switch_time;
1639 const u8 *country_elem;
1640 const u8 *pwr_constr_elem;
1641 const u8 *cisco_dtpc_elem;
1642 const struct ieee80211_timeout_interval_ie *timeout_int;
1643 const u8 *opmode_notif;
1644 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1645 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1646 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1647 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1648 const struct ieee80211_bssid_index *bssid_index;
1649 u8 max_bssid_indicator;
1652 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1653 const struct ieee80211_s1g_cap *s1g_capab;
1654 const struct ieee80211_s1g_oper_ie *s1g_oper;
1655 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1656 const struct ieee80211_aid_response_ie *aid_resp;
1657 const struct ieee80211_eht_cap_elem *eht_cap;
1658 const struct ieee80211_eht_operation *eht_operation;
1660 /* length of them, respectively */
1667 u8 ext_supp_rates_len;
1676 u8 country_elem_len;
1678 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT];
1682 /* whether a parse error occurred while retrieving these elements */
1686 static inline struct ieee80211_local *hw_to_local(
1687 struct ieee80211_hw *hw)
1689 return container_of(hw, struct ieee80211_local, hw);
1692 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1694 return container_of(txq, struct txq_info, txq);
1697 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1699 struct txq_info *txqi = to_txq_info(txq);
1701 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1705 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1707 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1708 status->flag & RX_FLAG_MACTIME_END);
1709 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END |
1710 RX_FLAG_MACTIME_PLCP_START));
1713 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1714 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1716 /* This function returns the number of multicast stations connected to this
1717 * interface. It returns -1 if that number is not tracked, that is for netdevs
1718 * not in AP or AP_VLAN mode or when using 4addr.
1721 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1723 if (sdata->vif.type == NL80211_IFTYPE_AP)
1724 return atomic_read(&sdata->u.ap.num_mcast_sta);
1725 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1726 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1730 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1731 struct ieee80211_rx_status *status,
1732 unsigned int mpdu_len,
1733 unsigned int mpdu_offset);
1734 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1735 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1736 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1738 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata,
1740 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata,
1741 struct ieee80211_link_data *link,
1743 void ieee80211_configure_filter(struct ieee80211_local *local);
1744 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1746 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1747 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1748 u64 *cookie, gfp_t gfp);
1750 void ieee80211_check_fast_rx(struct sta_info *sta);
1751 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1752 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1753 void ieee80211_clear_fast_rx(struct sta_info *sta);
1755 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata,
1756 const u8 *addr, int *out_link_id);
1759 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1760 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1761 struct cfg80211_auth_request *req);
1762 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1763 struct cfg80211_assoc_request *req);
1764 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1765 struct cfg80211_deauth_request *req);
1766 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1767 struct cfg80211_disassoc_request *req);
1768 void ieee80211_send_pspoll(struct ieee80211_local *local,
1769 struct ieee80211_sub_if_data *sdata);
1770 void ieee80211_recalc_ps(struct ieee80211_local *local);
1771 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1772 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1773 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1774 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1775 struct sk_buff *skb);
1776 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1777 struct sk_buff *skb);
1778 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1779 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1780 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1781 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1782 __le16 fc, bool acked);
1783 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1784 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1785 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1786 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1787 u8 reason, bool tx);
1788 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link);
1789 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link);
1792 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1793 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1794 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1795 const u8 *bssid, const u8 *addr, u32 supp_rates);
1796 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1797 struct cfg80211_ibss_params *params);
1798 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1799 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1800 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1801 struct sk_buff *skb);
1802 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1803 struct cfg80211_csa_settings *csa_settings);
1804 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1805 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1808 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1809 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1810 const u8 *bssid, const u8 *addr, u32 supp_rates);
1811 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1812 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1813 struct ocb_setup *setup);
1814 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1817 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1818 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1819 struct sk_buff *skb);
1820 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1821 struct cfg80211_csa_settings *csa_settings);
1822 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1824 /* scan/BSS handling */
1825 void ieee80211_scan_work(struct work_struct *work);
1826 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1827 const u8 *ssid, u8 ssid_len,
1828 struct ieee80211_channel **channels,
1829 unsigned int n_channels,
1830 enum nl80211_bss_scan_width scan_width);
1831 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1832 struct cfg80211_scan_request *req);
1833 void ieee80211_scan_cancel(struct ieee80211_local *local);
1834 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1835 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1837 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1838 struct ieee80211_bss *
1839 ieee80211_bss_info_update(struct ieee80211_local *local,
1840 struct ieee80211_rx_status *rx_status,
1841 struct ieee80211_mgmt *mgmt,
1843 struct ieee80211_channel *channel);
1844 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1845 struct ieee80211_bss *bss);
1847 /* scheduled scan handling */
1849 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1850 struct cfg80211_sched_scan_request *req);
1851 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1852 struct cfg80211_sched_scan_request *req);
1853 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1854 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1855 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1857 /* off-channel/mgmt-tx */
1858 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1859 void ieee80211_offchannel_return(struct ieee80211_local *local);
1860 void ieee80211_roc_setup(struct ieee80211_local *local);
1861 void ieee80211_start_next_roc(struct ieee80211_local *local);
1862 void ieee80211_roc_purge(struct ieee80211_local *local,
1863 struct ieee80211_sub_if_data *sdata);
1864 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1865 struct ieee80211_channel *chan,
1866 unsigned int duration, u64 *cookie);
1867 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1868 struct wireless_dev *wdev, u64 cookie);
1869 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1870 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1871 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1872 struct wireless_dev *wdev, u64 cookie);
1874 /* channel switch handling */
1875 void ieee80211_csa_finalize_work(struct work_struct *work);
1876 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1877 struct cfg80211_csa_settings *params);
1879 /* color change handling */
1880 void ieee80211_color_change_finalize_work(struct work_struct *work);
1882 /* interface handling */
1883 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1884 NETIF_F_HW_CSUM | NETIF_F_SG | \
1885 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
1886 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
1887 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
1888 MAC80211_SUPPORTED_FEATURES_RX)
1890 int ieee80211_iface_init(void);
1891 void ieee80211_iface_exit(void);
1892 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1893 unsigned char name_assign_type,
1894 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1895 struct vif_params *params);
1896 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1897 enum nl80211_iftype type);
1898 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1899 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1900 u32 ieee80211_idle_off(struct ieee80211_local *local);
1901 void ieee80211_recalc_idle(struct ieee80211_local *local);
1902 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1904 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1905 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1906 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1907 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1909 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata,
1912 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1913 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1915 void ieee80211_recalc_offload(struct ieee80211_local *local);
1917 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1919 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1923 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1924 void ieee80211_tx_pending(struct tasklet_struct *t);
1925 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1926 struct net_device *dev);
1927 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1928 struct net_device *dev);
1929 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
1930 struct net_device *dev);
1931 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1932 struct net_device *dev,
1936 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1937 struct sk_buff_head *skbs);
1939 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1940 struct sk_buff *skb, u32 info_flags);
1941 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1942 int retry_count, int shift, bool send_to_cooked,
1943 struct ieee80211_tx_status *status);
1945 void ieee80211_check_fast_xmit(struct sta_info *sta);
1946 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1947 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1948 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1949 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1950 const u8 *buf, size_t len,
1951 const u8 *dest, __be16 proto, bool unencrypted,
1952 int link_id, u64 *cookie);
1953 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
1954 const u8 *buf, size_t len);
1957 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1958 struct ieee80211_sta_ht_cap *ht_cap);
1959 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1960 struct ieee80211_supported_band *sband,
1961 const struct ieee80211_ht_cap *ht_cap_ie,
1962 struct link_sta_info *link_sta);
1963 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1964 const u8 *da, u16 tid,
1965 u16 initiator, u16 reason_code);
1966 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1967 enum ieee80211_smps_mode smps, const u8 *da,
1969 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1970 enum ieee80211_smps_mode smps_mode_new);
1972 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1973 u16 initiator, u16 reason, bool stop);
1974 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1975 u16 initiator, u16 reason, bool stop);
1976 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
1977 u8 dialog_token, u16 timeout,
1978 u16 start_seq_num, u16 ba_policy, u16 tid,
1979 u16 buf_size, bool tx, bool auto_seq,
1980 const struct ieee80211_addba_ext_ie *addbaext);
1981 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1982 enum ieee80211_agg_stop_reason reason);
1983 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1984 struct sta_info *sta,
1985 struct ieee80211_mgmt *mgmt, size_t len);
1986 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1987 struct sta_info *sta,
1988 struct ieee80211_mgmt *mgmt,
1990 void ieee80211_process_addba_request(struct ieee80211_local *local,
1991 struct sta_info *sta,
1992 struct ieee80211_mgmt *mgmt,
1995 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1996 enum ieee80211_agg_stop_reason reason);
1997 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1998 enum ieee80211_agg_stop_reason reason);
1999 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
2000 struct tid_ampdu_tx *tid_tx);
2001 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
2002 struct tid_ampdu_tx *tid_tx);
2003 void ieee80211_ba_session_work(struct work_struct *work);
2004 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
2005 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
2007 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
2008 enum nl80211_smps_mode
2009 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
2013 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
2014 struct ieee80211_supported_band *sband,
2015 const struct ieee80211_vht_cap *vht_cap_ie,
2016 struct link_sta_info *link_sta);
2017 enum ieee80211_sta_rx_bandwidth
2018 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta);
2019 enum ieee80211_sta_rx_bandwidth
2020 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta);
2021 void ieee80211_sta_set_rx_nss(struct link_sta_info *link_sta);
2022 enum ieee80211_sta_rx_bandwidth
2023 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
2024 enum nl80211_chan_width
2025 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta);
2026 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
2027 struct ieee80211_link_data *link,
2028 struct ieee80211_mgmt *mgmt);
2029 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2030 struct link_sta_info *sta,
2031 u8 opmode, enum nl80211_band band);
2032 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2033 struct link_sta_info *sta,
2034 u8 opmode, enum nl80211_band band);
2035 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
2036 struct ieee80211_sta_vht_cap *vht_cap);
2037 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
2038 u16 vht_mask[NL80211_VHT_NSS_MAX]);
2039 enum nl80211_chan_width
2040 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta);
2044 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
2045 struct ieee80211_supported_band *sband,
2046 const u8 *he_cap_ie, u8 he_cap_len,
2047 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
2048 struct link_sta_info *link_sta);
2050 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
2051 const struct ieee80211_he_spr *he_spr_ie_elem);
2054 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
2055 const struct ieee80211_he_operation *he_op_ie_elem);
2058 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
2059 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb);
2060 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
2061 struct sk_buff *skb);
2062 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
2063 struct sk_buff *skb);
2065 /* Spectrum management */
2066 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
2067 struct ieee80211_mgmt *mgmt,
2070 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
2071 * @sdata: the sdata of the interface which has received the frame
2072 * @elems: parsed 802.11 elements received with the frame
2073 * @current_band: indicates the current band
2074 * @vht_cap_info: VHT capabilities of the transmitter
2075 * @conn_flags: contains information about own capabilities and restrictions
2076 * to decide which channel switch announcements can be accepted, using
2077 * flags from &enum ieee80211_conn_flags.
2078 * @bssid: the currently connected bssid (for reporting)
2079 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
2080 All of them will be filled with if success only.
2081 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
2083 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
2084 struct ieee802_11_elems *elems,
2085 enum nl80211_band current_band,
2087 ieee80211_conn_flags_t conn_flags, u8 *bssid,
2088 struct ieee80211_csa_ie *csa_ie);
2090 /* Suspend/resume and hw reconfiguration */
2091 int ieee80211_reconfig(struct ieee80211_local *local);
2092 void ieee80211_stop_device(struct ieee80211_local *local);
2094 int __ieee80211_suspend(struct ieee80211_hw *hw,
2095 struct cfg80211_wowlan *wowlan);
2097 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
2099 struct ieee80211_local *local = hw_to_local(hw);
2101 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
2102 !test_bit(SCAN_COMPLETED, &local->scanning),
2103 "%s: resume with hardware scan still in progress\n",
2104 wiphy_name(hw->wiphy));
2106 return ieee80211_reconfig(hw_to_local(hw));
2109 /* utility functions/constants */
2110 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
2111 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2112 int rate, int erp, int short_preamble,
2114 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
2115 struct ieee80211_tx_queue_params *qparam,
2117 void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
2118 bool bss_notify, bool enable_qos);
2119 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
2120 struct sta_info *sta, struct sk_buff *skb);
2122 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2123 struct sk_buff *skb, int tid,
2124 enum nl80211_band band);
2126 /* sta_out needs to be checked for ERR_PTR() before using */
2127 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2128 struct sk_buff *skb,
2129 struct sta_info **sta_out);
2132 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2133 struct sk_buff *skb, int tid,
2134 enum nl80211_band band)
2137 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
2141 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2142 struct sk_buff *skb, int tid);
2144 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2145 struct sk_buff *skb)
2147 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2148 ieee80211_tx_skb_tid(sdata, skb, 7);
2152 * struct ieee80211_elems_parse_params - element parsing parameters
2153 * @start: pointer to the elements
2154 * @len: length of the elements
2155 * @action: %true if the elements came from an action frame
2156 * @filter: bitmap of element IDs to filter out while calculating
2158 * @crc: CRC starting value
2159 * @bss: the BSS to parse this as, for multi-BSSID cases this can
2160 * represent a non-transmitting BSS in which case the data
2161 * for that non-transmitting BSS is returned
2163 struct ieee80211_elems_parse_params {
2169 struct cfg80211_bss *bss;
2172 struct ieee802_11_elems *
2173 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params);
2175 static inline struct ieee802_11_elems *
2176 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2177 u64 filter, u32 crc,
2178 struct cfg80211_bss *bss)
2180 struct ieee80211_elems_parse_params params = {
2189 return ieee802_11_parse_elems_full(¶ms);
2192 static inline struct ieee802_11_elems *
2193 ieee802_11_parse_elems(const u8 *start, size_t len, bool action,
2194 struct cfg80211_bss *bss)
2196 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss);
2199 void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos);
2201 extern const int ieee802_1d_to_ac[8];
2203 static inline int ieee80211_ac_from_tid(int tid)
2205 return ieee802_1d_to_ac[tid & 7];
2208 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2209 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2210 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2211 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2212 struct ieee80211_sub_if_data *sdata,
2214 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2215 struct ieee80211_sub_if_data *sdata);
2216 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2217 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2219 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2220 unsigned long queues,
2221 enum queue_stop_reason reason,
2223 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2224 struct ieee80211_sub_if_data *sdata,
2225 enum queue_stop_reason reason);
2226 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2227 struct ieee80211_sub_if_data *sdata,
2228 enum queue_stop_reason reason);
2229 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2230 unsigned long queues,
2231 enum queue_stop_reason reason,
2233 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2234 enum queue_stop_reason reason,
2236 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2237 enum queue_stop_reason reason,
2239 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2240 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2241 struct sk_buff *skb);
2242 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2243 struct sk_buff_head *skbs);
2244 void ieee80211_flush_queues(struct ieee80211_local *local,
2245 struct ieee80211_sub_if_data *sdata, bool drop);
2246 void __ieee80211_flush_queues(struct ieee80211_local *local,
2247 struct ieee80211_sub_if_data *sdata,
2248 unsigned int queues, bool drop);
2250 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2253 * It's unsafe to try to do any work during reconfigure flow.
2254 * When the flow ends the work will be requeued.
2256 if (local->in_reconfig)
2260 * If quiescing is set, we are racing with __ieee80211_suspend.
2261 * __ieee80211_suspend flushes the workers after setting quiescing,
2262 * and we check quiescing / suspended before enqueing new workers.
2263 * We should abort the worker to avoid the races below.
2265 if (local->quiescing)
2269 * We might already be suspended if the following scenario occurs:
2270 * __ieee80211_suspend Control path
2272 * if (local->quiescing)
2274 * local->quiescing = true;
2275 * flush_workqueue();
2277 * local->suspended = true;
2278 * local->quiescing = false;
2279 * worker starts running...
2281 if (local->suspended)
2287 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2288 void ieee80211_txq_set_params(struct ieee80211_local *local);
2289 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2290 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2291 struct sta_info *sta,
2292 struct txq_info *txq, int tid);
2293 void ieee80211_txq_purge(struct ieee80211_local *local,
2294 struct txq_info *txqi);
2295 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2296 struct ieee80211_sub_if_data *sdata);
2297 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2298 struct txq_info *txqi);
2299 void ieee80211_wake_txqs(struct tasklet_struct *t);
2300 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2301 u16 transaction, u16 auth_alg, u16 status,
2302 const u8 *extra, size_t extra_len, const u8 *bssid,
2303 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2305 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2306 const u8 *da, const u8 *bssid,
2307 u16 stype, u16 reason,
2308 bool send_frame, u8 *frame_buf);
2311 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2312 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2313 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2316 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2318 struct ieee80211_scan_ies *ie_desc,
2319 const u8 *ie, size_t ie_len,
2320 u8 bands_used, u32 *rate_masks,
2321 struct cfg80211_chan_def *chandef,
2323 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2324 const u8 *src, const u8 *dst,
2326 struct ieee80211_channel *chan,
2327 const u8 *ssid, size_t ssid_len,
2328 const u8 *ie, size_t ie_len,
2330 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2331 struct ieee802_11_elems *elems,
2332 enum nl80211_band band, u32 *basic_rates);
2333 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2334 struct ieee80211_link_data *link,
2335 enum ieee80211_smps_mode smps_mode);
2336 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
2337 struct ieee80211_link_data *link);
2338 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2340 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2341 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2343 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2344 const struct cfg80211_chan_def *chandef,
2345 u16 prot_mode, bool rifs_mode);
2346 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2347 const struct cfg80211_chan_def *chandef);
2348 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2350 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2351 const struct cfg80211_chan_def *chandef);
2352 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2353 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos,
2354 const struct ieee80211_sta_he_cap *he_cap,
2356 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2357 struct sk_buff *skb);
2358 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2359 int ieee80211_parse_bitrates(enum nl80211_chan_width width,
2360 const struct ieee80211_supported_band *sband,
2361 const u8 *srates, int srates_len, u32 *rates);
2362 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2363 struct sk_buff *skb, bool need_basic,
2364 enum nl80211_band band);
2365 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2366 struct sk_buff *skb, bool need_basic,
2367 enum nl80211_band band);
2368 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2369 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2370 struct ieee80211_sta_s1g_cap *caps,
2371 struct sk_buff *skb);
2372 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2373 struct sk_buff *skb);
2375 /* channel management */
2376 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2377 struct cfg80211_chan_def *chandef);
2378 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2379 const struct ieee80211_vht_operation *oper,
2380 const struct ieee80211_ht_operation *htop,
2381 struct cfg80211_chan_def *chandef);
2382 void ieee80211_chandef_eht_oper(struct ieee80211_sub_if_data *sdata,
2383 const struct ieee80211_eht_operation *eht_oper,
2384 bool support_160, bool support_320,
2385 struct cfg80211_chan_def *chandef);
2386 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2387 const struct ieee80211_he_operation *he_oper,
2388 const struct ieee80211_eht_operation *eht_oper,
2389 struct cfg80211_chan_def *chandef);
2390 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2391 struct cfg80211_chan_def *chandef);
2392 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2395 ieee80211_link_use_channel(struct ieee80211_link_data *link,
2396 const struct cfg80211_chan_def *chandef,
2397 enum ieee80211_chanctx_mode mode);
2399 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
2400 const struct cfg80211_chan_def *chandef,
2401 enum ieee80211_chanctx_mode mode,
2402 bool radar_required);
2404 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link);
2405 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link);
2408 ieee80211_link_change_bandwidth(struct ieee80211_link_data *link,
2409 const struct cfg80211_chan_def *chandef,
2411 void ieee80211_link_release_channel(struct ieee80211_link_data *link);
2412 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link);
2413 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link,
2415 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2416 struct ieee80211_chanctx *ctx);
2418 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2419 struct ieee80211_chanctx *chanctx);
2420 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2421 struct ieee80211_chanctx *ctx);
2422 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2424 void ieee80211_dfs_cac_timer(unsigned long data);
2425 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2426 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2427 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2428 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2429 struct cfg80211_csa_settings *csa_settings);
2431 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2432 struct ieee80211_sub_if_data *sdata);
2433 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2434 const struct cfg80211_chan_def *chandef,
2435 enum ieee80211_chanctx_mode chanmode,
2437 int ieee80211_max_num_channels(struct ieee80211_local *local);
2438 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2439 struct ieee80211_chanctx *ctx);
2442 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2443 const u8 *peer, u8 action_code, u8 dialog_token,
2444 u16 status_code, u32 peer_capability,
2445 bool initiator, const u8 *extra_ies,
2446 size_t extra_ies_len);
2447 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2448 const u8 *peer, enum nl80211_tdls_operation oper);
2449 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2450 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2451 const u8 *addr, u8 oper_class,
2452 struct cfg80211_chan_def *chandef);
2453 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2454 struct net_device *dev,
2456 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2457 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2458 const u8 *peer, u16 reason);
2460 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2461 struct sk_buff *skb);
2464 const char *ieee80211_get_reason_code_string(u16 reason_code);
2465 u16 ieee80211_encode_usf(int val);
2466 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2467 enum nl80211_iftype type);
2469 extern const struct ethtool_ops ieee80211_ethtool_ops;
2471 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2472 struct ieee80211_vif *vif,
2473 struct ieee80211_sta *pubsta,
2474 int len, bool ampdu);
2475 #ifdef CONFIG_MAC80211_NOINLINE
2476 #define debug_noinline noinline
2478 #define debug_noinline
2481 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2482 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2484 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2485 u8 *ieee80211_ie_build_eht_cap(u8 *pos,
2486 const struct ieee80211_sta_he_cap *he_cap,
2487 const struct ieee80211_sta_eht_cap *eht_cap,
2491 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata,
2492 struct ieee80211_supported_band *sband,
2493 const u8 *he_cap_ie, u8 he_cap_len,
2494 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem,
2496 struct link_sta_info *link_sta);
2497 #endif /* IEEE80211_I_H */