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 ieee80211_link_data *link;
215 struct sta_info *sta;
216 struct ieee80211_key *key;
221 * Index into sequence numbers array, 0..16
222 * since the last (16) is used for non-QoS,
223 * will be 16 on non-QoS frames.
228 * Index into the security IV/PN arrays, 0..16
229 * since the last (16) is used for CCMP-encrypted
230 * management frames, will be set to 16 on mgmt
231 * frames and 0 on non-QoS frames.
243 u8 pn[IEEE80211_CCMP_PN_LEN];
248 struct ieee80211_csa_settings {
249 const u16 *counter_offsets_beacon;
250 const u16 *counter_offsets_presp;
252 int n_counter_offsets_beacon;
253 int n_counter_offsets_presp;
258 struct ieee80211_color_change_settings {
259 u16 counter_offset_beacon;
260 u16 counter_offset_presp;
266 int head_len, tail_len;
267 struct ieee80211_meshconf_ie *meshconf;
268 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
269 u8 cntdwn_current_counter;
270 struct cfg80211_mbssid_elems *mbssid_ies;
271 struct rcu_head rcu_head;
275 struct rcu_head rcu_head;
277 u16 cntdwn_counter_offsets[IEEE80211_MAX_CNTDWN_COUNTERS_NUM];
281 struct fils_discovery_data {
282 struct rcu_head rcu_head;
287 struct unsol_bcast_probe_resp_data {
288 struct rcu_head rcu_head;
294 /* yes, this looks ugly, but guarantees that we can later use
296 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
297 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
298 __aligned(__alignof__(unsigned long));
299 struct sk_buff_head bc_buf;
300 atomic_t num_sta_ps; /* number of stations in PS mode */
305 struct ieee80211_if_ap {
306 struct list_head vlans; /* write-protected with RTNL and local->mtx */
309 atomic_t num_mcast_sta; /* number of stations receiving multicast */
311 bool multicast_to_unicast;
315 struct ieee80211_if_vlan {
316 struct list_head list; /* write-protected with RTNL and local->mtx */
318 /* used for all tx if the VLAN is configured to 4-addr mode */
319 struct sta_info __rcu *sta;
320 atomic_t num_mcast_sta; /* number of stations receiving multicast */
324 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
325 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
326 __u32 fwded_frames; /* Mesh total forwarded frames */
327 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
328 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
329 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
332 #define PREQ_Q_F_START 0x1
333 #define PREQ_Q_F_REFRESH 0x2
334 struct mesh_preq_queue {
335 struct list_head list;
340 struct ieee80211_roc_work {
341 struct list_head list;
343 struct ieee80211_sub_if_data *sdata;
345 struct ieee80211_channel *chan;
347 bool started, abort, hw_begun, notified;
350 unsigned long start_time;
352 u32 duration, req_duration;
353 struct sk_buff *frame;
354 u64 cookie, mgmt_tx_cookie;
355 enum ieee80211_roc_type type;
358 /* flags used in struct ieee80211_if_managed.flags */
359 enum ieee80211_sta_flags {
360 IEEE80211_STA_CONNECTION_POLL = BIT(1),
361 IEEE80211_STA_CONTROL_PORT = BIT(2),
362 IEEE80211_STA_MFP_ENABLED = BIT(6),
363 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
364 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
365 IEEE80211_STA_ENABLE_RRM = BIT(15),
368 typedef u32 __bitwise ieee80211_conn_flags_t;
370 enum ieee80211_conn_flags {
371 IEEE80211_CONN_DISABLE_HT = (__force ieee80211_conn_flags_t)BIT(0),
372 IEEE80211_CONN_DISABLE_40MHZ = (__force ieee80211_conn_flags_t)BIT(1),
373 IEEE80211_CONN_DISABLE_VHT = (__force ieee80211_conn_flags_t)BIT(2),
374 IEEE80211_CONN_DISABLE_80P80MHZ = (__force ieee80211_conn_flags_t)BIT(3),
375 IEEE80211_CONN_DISABLE_160MHZ = (__force ieee80211_conn_flags_t)BIT(4),
376 IEEE80211_CONN_DISABLE_HE = (__force ieee80211_conn_flags_t)BIT(5),
377 IEEE80211_CONN_DISABLE_EHT = (__force ieee80211_conn_flags_t)BIT(6),
378 IEEE80211_CONN_DISABLE_320MHZ = (__force ieee80211_conn_flags_t)BIT(7),
381 struct ieee80211_mgd_auth_data {
382 struct cfg80211_bss *bss;
383 unsigned long timeout;
385 u16 algorithm, expected_transaction;
387 u8 key[WLAN_KEY_LEN_WEP104];
391 bool timeout_started;
393 u8 ap_addr[ETH_ALEN] __aligned(2);
395 u16 sae_trans, sae_status;
400 struct ieee80211_mgd_assoc_data {
402 struct cfg80211_bss *bss;
404 u8 addr[ETH_ALEN] __aligned(2);
408 struct ieee80211_vht_cap ap_vht_cap;
411 u8 *elems; /* pointing to inside ie[] below */
413 ieee80211_conn_flags_t conn_flags;
414 } link[IEEE80211_MLD_MAX_NUM_LINKS];
416 u8 ap_addr[ETH_ALEN] __aligned(2);
418 /* this is for a workaround, so we use it only for non-MLO */
419 const u8 *supp_rates;
422 unsigned long timeout;
425 u8 prev_ap_addr[ETH_ALEN];
426 u8 ssid[IEEE80211_MAX_SSID_LEN];
431 bool timeout_started;
434 unsigned int assoc_link_id;
436 u8 fils_nonces[2 * FILS_NONCE_LEN];
437 u8 fils_kek[FILS_MAX_KEK_LEN];
441 u8 *ie_pos; /* used to fill ie[] with link[].elems */
445 struct ieee80211_sta_tx_tspec {
446 /* timestamp of the first packet in the time slice */
447 unsigned long time_slice_start;
449 u32 admitted_time; /* in usecs, unlike over the air */
451 s8 up; /* signed to be able to invalidate with -1 during teardown */
453 /* consumed TX time in microseconds in the time slice */
454 u32 consumed_tx_time;
456 TX_TSPEC_ACTION_NONE = 0,
457 TX_TSPEC_ACTION_DOWNGRADE,
458 TX_TSPEC_ACTION_STOP_DOWNGRADE,
463 DECLARE_EWMA(beacon_signal, 4, 4)
465 struct ieee80211_if_managed {
466 struct timer_list timer;
467 struct timer_list conn_mon_timer;
468 struct timer_list bcn_mon_timer;
469 struct work_struct monitor_work;
470 struct work_struct beacon_connection_loss_work;
471 struct work_struct csa_connection_drop_work;
473 unsigned long beacon_timeout;
474 unsigned long probe_timeout;
475 int probe_send_count;
476 bool nullfunc_failed;
477 u8 connection_loss:1,
482 struct ieee80211_mgd_auth_data *auth_data;
483 struct ieee80211_mgd_assoc_data *assoc_data;
485 bool powersave; /* powersave requested for this iface */
486 bool broken_ap; /* AP is broken -- turn off powersave */
491 bool status_received;
495 IEEE80211_MFP_DISABLED,
496 IEEE80211_MFP_OPTIONAL,
497 IEEE80211_MFP_REQUIRED
498 } mfp; /* management frame protection */
501 * Bitmask of enabled u-apsd queues,
502 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
505 unsigned int uapsd_queues;
508 * Maximum number of buffered frames AP can deliver during a
509 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
510 * Needs a new association to take effect.
512 unsigned int uapsd_max_sp_len;
517 * State variables for keeping track of RSSI of the AP currently
518 * connected to and informing driver when RSSI has gone
519 * below/above a certain threshold.
521 int rssi_min_thold, rssi_max_thold;
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 */
527 struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
528 struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
531 u8 tdls_peer[ETH_ALEN] __aligned(2);
532 struct delayed_work tdls_peer_del_work;
533 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
534 struct sk_buff *teardown_skb; /* A copy to send through the AP */
535 spinlock_t teardown_lock; /* To lock changing teardown_skb */
536 bool tdls_wider_bw_prohibited;
538 /* WMM-AC TSPEC support */
539 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
540 /* Use a separate work struct so that we can do something here
541 * while the sdata->work is flushing the queues, for example.
542 * otherwise, in scenarios where we hardly get any traffic out
543 * on the BE queue, but there's a lot of VO traffic, we might
544 * get stuck in a downgraded situation and flush takes forever.
546 struct delayed_work tx_tspec_wk;
548 /* Information elements from the last transmitted (Re)Association
552 size_t assoc_req_ies_len;
555 struct ieee80211_if_ibss {
556 struct timer_list timer;
557 struct work_struct csa_connection_drop_work;
559 unsigned long last_scan_completed;
568 bool userspace_handles_dfs;
570 u8 bssid[ETH_ALEN] __aligned(2);
571 u8 ssid[IEEE80211_MAX_SSID_LEN];
574 struct cfg80211_chan_def chandef;
576 unsigned long ibss_join_req;
577 /* probe response/beacon for IBSS */
578 struct beacon_data __rcu *presp;
580 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
581 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
583 spinlock_t incomplete_lock;
584 struct list_head incomplete_stations;
587 IEEE80211_IBSS_MLME_SEARCH,
588 IEEE80211_IBSS_MLME_JOINED,
593 * struct ieee80211_if_ocb - OCB mode state
595 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
596 * @wrkq_flags: OCB deferred task action
597 * @incomplete_lock: delayed STA insertion lock
598 * @incomplete_stations: list of STAs waiting for delayed insertion
599 * @joined: indication if the interface is connected to an OCB network
601 struct ieee80211_if_ocb {
602 struct timer_list housekeeping_timer;
603 unsigned long wrkq_flags;
605 spinlock_t incomplete_lock;
606 struct list_head incomplete_stations;
612 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
614 * these declarations define the interface, which enables
615 * vendor-specific mesh synchronization
618 struct ieee802_11_elems;
619 struct ieee80211_mesh_sync_ops {
620 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, u16 stype,
621 struct ieee80211_mgmt *mgmt, unsigned int len,
622 const struct ieee80211_meshconf_ie *mesh_cfg,
623 struct ieee80211_rx_status *rx_status);
625 /* should be called with beacon_data under RCU read lock */
626 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
627 struct beacon_data *beacon);
628 /* add other framework functions here */
631 struct mesh_csa_settings {
632 struct rcu_head rcu_head;
633 struct cfg80211_csa_settings settings;
639 * @known_gates: list of known mesh gates and their mpaths by the station. The
640 * gate's mpath may or may not be resolved and active.
641 * @gates_lock: protects updates to known_gates
642 * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
643 * @walk_head: linked list containing all mesh_path objects
644 * @walk_lock: lock protecting walk_head
645 * @entries: number of entries in the table
648 struct hlist_head known_gates;
649 spinlock_t gates_lock;
650 struct rhashtable rhead;
651 struct hlist_head walk_head;
652 spinlock_t walk_lock;
653 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
656 struct ieee80211_if_mesh {
657 struct timer_list housekeeping_timer;
658 struct timer_list mesh_path_timer;
659 struct timer_list mesh_path_root_timer;
661 unsigned long wrkq_flags;
662 unsigned long mbss_changed;
664 bool userspace_handles_dfs;
666 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
668 /* Active Path Selection Protocol Identifier */
670 /* Active Path Selection Metric Identifier */
672 /* Congestion Control Mode Identifier */
674 /* Synchronization Protocol Identifier */
676 /* Authentication Protocol Identifier */
678 /* Local mesh Sequence Number */
680 /* Last used PREQ ID */
683 /* Timestamp of last SN update */
684 unsigned long last_sn_update;
685 /* Time when it's ok to send next PERR */
686 unsigned long next_perr;
687 /* Timestamp of last PREQ sent */
688 unsigned long last_preq;
689 struct mesh_rmc *rmc;
690 spinlock_t mesh_preq_queue_lock;
691 struct mesh_preq_queue preq_queue;
693 struct mesh_stats mshstats;
694 struct mesh_config mshcfg;
695 atomic_t estab_plinks;
697 bool accepting_plinks;
699 struct beacon_data __rcu *beacon;
703 IEEE80211_MESH_SEC_NONE = 0x0,
704 IEEE80211_MESH_SEC_AUTHED = 0x1,
705 IEEE80211_MESH_SEC_SECURED = 0x2,
708 /* Extensible Synchronization Framework */
709 const struct ieee80211_mesh_sync_ops *sync_ops;
710 s64 sync_offset_clockdrift_max;
711 spinlock_t sync_offset_lock;
712 /* mesh power save */
713 enum nl80211_mesh_power_mode nonpeer_pm;
714 int ps_peers_light_sleep;
715 int ps_peers_deep_sleep;
717 /* Channel Switching Support */
718 struct mesh_csa_settings __rcu *csa;
720 IEEE80211_MESH_CSA_ROLE_NONE,
721 IEEE80211_MESH_CSA_ROLE_INIT,
722 IEEE80211_MESH_CSA_ROLE_REPEATER,
727 /* offset from skb->data while building IE */
730 struct mesh_table mesh_paths;
731 struct mesh_table mpp_paths; /* Store paths for MPP&MAP */
732 int mesh_paths_generation;
733 int mpp_paths_generation;
736 #ifdef CONFIG_MAC80211_MESH
737 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
738 do { (msh)->mshstats.name++; } while (0)
740 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
745 * enum ieee80211_sub_if_data_flags - virtual interface flags
747 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
748 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
749 * associated stations and deliver multicast frames both
750 * back to wireless media and to the local net stack.
751 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
752 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
753 * @IEEE80211_SDATA_DISCONNECT_HW_RESTART: Disconnect after hardware restart
756 enum ieee80211_sub_if_data_flags {
757 IEEE80211_SDATA_ALLMULTI = BIT(0),
758 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
759 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
760 IEEE80211_SDATA_IN_DRIVER = BIT(5),
761 IEEE80211_SDATA_DISCONNECT_HW_RESTART = BIT(6),
765 * enum ieee80211_sdata_state_bits - virtual interface state bits
766 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
767 * mirrors netif_running() but is separate for interface type
768 * change handling while the interface is up
769 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
770 * mode, so queues are stopped
771 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
772 * to offchannel, reset when offchannel returns
774 enum ieee80211_sdata_state_bits {
776 SDATA_STATE_OFFCHANNEL,
777 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
781 * enum ieee80211_chanctx_mode - channel context configuration mode
783 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
784 * multiple interfaces
785 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
786 * only by a single interface. This can be used for example for
787 * non-fixed channel IBSS.
789 enum ieee80211_chanctx_mode {
790 IEEE80211_CHANCTX_SHARED,
791 IEEE80211_CHANCTX_EXCLUSIVE
795 * enum ieee80211_chanctx_replace_state - channel context replacement state
797 * This is used for channel context in-place reservations that require channel
798 * context switch/swap.
800 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
801 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
802 * by a (not yet registered) channel context pointed by %replace_ctx.
803 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
804 * replaces an existing channel context pointed to by %replace_ctx.
806 enum ieee80211_chanctx_replace_state {
807 IEEE80211_CHANCTX_REPLACE_NONE,
808 IEEE80211_CHANCTX_WILL_BE_REPLACED,
809 IEEE80211_CHANCTX_REPLACES_OTHER,
812 struct ieee80211_chanctx {
813 struct list_head list;
814 struct rcu_head rcu_head;
816 struct list_head assigned_links;
817 struct list_head reserved_links;
819 enum ieee80211_chanctx_replace_state replace_state;
820 struct ieee80211_chanctx *replace_ctx;
822 enum ieee80211_chanctx_mode mode;
825 struct ieee80211_chanctx_conf conf;
828 struct mac80211_qos_map {
829 struct cfg80211_qos_map qos_map;
830 struct rcu_head rcu_head;
833 enum txq_info_flags {
836 IEEE80211_TXQ_NO_AMSDU,
837 IEEE80211_TXQ_STOP_NETIF_TX,
841 * struct txq_info - per tid queue
843 * @tin: contains packets split into multiple flows
844 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
845 * a fq_flow which is already owned by a different tin
846 * @def_cvars: codel vars for @def_flow
847 * @frags: used to keep fragments created after dequeue
848 * @schedule_order: used with ieee80211_local->active_txqs
849 * @schedule_round: counter to prevent infinite loops on TXQ scheduling
853 struct codel_vars def_cvars;
854 struct codel_stats cstats;
857 struct list_head schedule_order;
859 struct sk_buff_head frags;
864 struct ieee80211_txq txq;
867 struct ieee80211_if_mntr {
869 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
871 struct list_head list;
875 * struct ieee80211_if_nan - NAN state
877 * @conf: current NAN configuration
878 * @func_ids: a bitmap of available instance_id's
880 struct ieee80211_if_nan {
881 struct cfg80211_nan_conf conf;
883 /* protects function_inst_ids */
884 spinlock_t func_lock;
885 struct idr function_inst_ids;
888 struct ieee80211_link_data_managed {
889 u8 bssid[ETH_ALEN] __aligned(2);
892 enum ieee80211_smps_mode req_smps, /* requested smps mode */
893 driver_smps_mode; /* smps mode request */
895 ieee80211_conn_flags_t conn_flags;
899 bool tdls_chan_switch_prohibited;
902 bool tracking_signal_avg;
903 bool disable_wmm_tracking;
904 bool operating_11g_mode;
906 bool csa_waiting_bcn;
907 bool csa_ignored_same_chan;
908 struct timer_list chswitch_timer;
909 struct work_struct chswitch_work;
911 struct work_struct request_smps_work;
912 bool beacon_crc_valid;
914 struct ewma_beacon_signal ave_beacon_signal;
915 int last_ave_beacon_signal;
918 * Number of Beacon frames used in ave_beacon_signal. This can be used
919 * to avoid generating less reliable cqm events that would be based
920 * only on couple of received frames.
922 unsigned int count_beacon_signal;
924 /* Number of times beacon loss was invoked. */
925 unsigned int beacon_loss_count;
928 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
929 * that triggered a cqm event. 0 indicates that no event has been
930 * generated for the current association.
932 int last_cqm_event_signal;
934 int wmm_last_param_set;
935 int mu_edca_last_param_set;
937 struct cfg80211_bss *bss;
940 struct ieee80211_link_data_ap {
941 struct beacon_data __rcu *beacon;
942 struct probe_resp __rcu *probe_resp;
943 struct fils_discovery_data __rcu *fils_discovery;
944 struct unsol_bcast_probe_resp_data __rcu *unsol_bcast_probe_resp;
946 /* to be used after channel switch. */
947 struct cfg80211_beacon_data *next_beacon;
950 struct ieee80211_link_data {
951 struct ieee80211_sub_if_data *sdata;
952 unsigned int link_id;
954 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
955 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
957 /* multicast keys only */
958 struct ieee80211_key __rcu *gtk[NUM_DEFAULT_KEYS +
959 NUM_DEFAULT_MGMT_KEYS +
960 NUM_DEFAULT_BEACON_KEYS];
961 struct ieee80211_key __rcu *default_multicast_key;
962 struct ieee80211_key __rcu *default_mgmt_key;
963 struct ieee80211_key __rcu *default_beacon_key;
965 struct work_struct csa_finalize_work;
966 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
968 bool operating_11g_mode;
970 struct cfg80211_chan_def csa_chandef;
972 struct work_struct color_change_finalize_work;
974 /* context reservation -- protected with chanctx_mtx */
975 struct ieee80211_chanctx *reserved_chanctx;
976 struct cfg80211_chan_def reserved_chandef;
977 bool reserved_radar_required;
981 enum ieee80211_smps_mode smps_mode;
983 int user_power_level; /* in dBm */
984 int ap_power_level; /* in dBm */
987 struct delayed_work dfs_cac_timer_work;
990 struct ieee80211_link_data_managed mgd;
991 struct ieee80211_link_data_ap ap;
994 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
996 struct ieee80211_bss_conf *conf;
999 struct ieee80211_sub_if_data {
1000 struct list_head list;
1002 struct wireless_dev wdev;
1005 struct list_head key_list;
1007 /* count for keys needing tailroom space allocation */
1008 int crypto_tx_tailroom_needed_cnt;
1009 int crypto_tx_tailroom_pending_dec;
1010 struct delayed_work dec_tailroom_needed_wk;
1012 struct net_device *dev;
1013 struct ieee80211_local *local;
1017 unsigned long state;
1019 char name[IFNAMSIZ];
1021 struct ieee80211_fragment_cache frags;
1023 /* TID bitmap for NoAck policy */
1026 /* bit field of ACM bits (BIT(802.1D tag)) */
1029 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS];
1030 struct ieee80211_key __rcu *default_unicast_key;
1032 u16 sequence_number;
1034 __be16 control_port_protocol;
1035 bool control_port_no_encrypt;
1036 bool control_port_no_preauth;
1037 bool control_port_over_nl80211;
1039 atomic_t num_tx_queued;
1040 struct mac80211_qos_map __rcu *qos_map;
1042 /* used to reconfigure hardware SM PS */
1043 struct work_struct recalc_smps;
1045 struct work_struct work;
1046 struct sk_buff_head skb_queue;
1047 struct sk_buff_head status_queue;
1050 * AP this belongs to: self in AP mode and
1051 * corresponding AP in VLAN mode, NULL for
1052 * all others (might be needed later in IBSS)
1054 struct ieee80211_if_ap *bss;
1056 /* bitmap of allowed (non-MCS) rate indexes for rate control */
1057 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
1059 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
1060 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
1062 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
1063 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
1065 /* Beacon frame (non-MCS) rate (as a bitmap) */
1066 u32 beacon_rateidx_mask[NUM_NL80211_BANDS];
1067 bool beacon_rate_set;
1070 struct ieee80211_if_ap ap;
1071 struct ieee80211_if_vlan vlan;
1072 struct ieee80211_if_managed mgd;
1073 struct ieee80211_if_ibss ibss;
1074 struct ieee80211_if_mesh mesh;
1075 struct ieee80211_if_ocb ocb;
1076 struct ieee80211_if_mntr mntr;
1077 struct ieee80211_if_nan nan;
1080 struct ieee80211_link_data deflink;
1081 struct ieee80211_link_data __rcu *link[IEEE80211_MLD_MAX_NUM_LINKS];
1083 #ifdef CONFIG_MAC80211_DEBUGFS
1085 struct dentry *subdir_stations;
1086 struct dentry *default_unicast_key;
1087 struct dentry *default_multicast_key;
1088 struct dentry *default_mgmt_key;
1089 struct dentry *default_beacon_key;
1093 /* must be last, dynamically sized area in this! */
1094 struct ieee80211_vif vif;
1098 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
1100 return container_of(p, struct ieee80211_sub_if_data, vif);
1103 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
1104 __acquires(&sdata->wdev.mtx)
1106 mutex_lock(&sdata->wdev.mtx);
1107 __acquire(&sdata->wdev.mtx);
1110 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
1111 __releases(&sdata->wdev.mtx)
1113 mutex_unlock(&sdata->wdev.mtx);
1114 __release(&sdata->wdev.mtx);
1117 #define sdata_dereference(p, sdata) \
1118 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1121 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1123 lockdep_assert_held(&sdata->wdev.mtx);
1127 ieee80211_chanwidth_get_shift(enum nl80211_chan_width width)
1130 case NL80211_CHAN_WIDTH_5:
1132 case NL80211_CHAN_WIDTH_10:
1140 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1142 return ieee80211_chanwidth_get_shift(chandef->width);
1146 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1148 struct ieee80211_chanctx_conf *chanctx_conf;
1152 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
1154 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1161 ieee80211_get_mbssid_beacon_len(struct cfg80211_mbssid_elems *elems)
1168 for (i = 0; i < elems->cnt; i++)
1169 len += elems->elem[i].len;
1175 IEEE80211_RX_MSG = 1,
1176 IEEE80211_TX_STATUS_MSG = 2,
1179 enum queue_stop_reason {
1180 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1181 IEEE80211_QUEUE_STOP_REASON_PS,
1182 IEEE80211_QUEUE_STOP_REASON_CSA,
1183 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1184 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1185 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1186 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1187 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1188 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1189 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1190 IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
1192 IEEE80211_QUEUE_STOP_REASONS,
1195 #ifdef CONFIG_MAC80211_LEDS
1196 struct tpt_led_trigger {
1198 const struct ieee80211_tpt_blink *blink_table;
1199 unsigned int blink_table_len;
1200 struct timer_list timer;
1201 struct ieee80211_local *local;
1202 unsigned long prev_traffic;
1203 unsigned long tx_bytes, rx_bytes;
1204 unsigned int active, want;
1210 * mac80211 scan flags - currently active scan mode
1212 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1213 * well be on the operating channel
1214 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1215 * determine if we are on the operating channel or not
1216 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1217 * channel. This should not interrupt normal traffic.
1218 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1219 * that the scan completed.
1220 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1221 * a scan complete for an aborted scan.
1222 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1224 * @SCAN_BEACON_WAIT: Set whenever we're passive scanning because of radar/no-IR
1225 * and could send a probe request after receiving a beacon.
1226 * @SCAN_BEACON_DONE: Beacon received, we can now send a probe request
1231 SCAN_ONCHANNEL_SCANNING,
1240 * enum mac80211_scan_state - scan state machine states
1242 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1243 * determines if we should keep on scanning or switch back to the
1245 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1246 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1247 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1249 * @SCAN_RESUME: Resume the scan and scan the next channel
1250 * @SCAN_ABORT: Abort the scan and go back to operating channel
1252 enum mac80211_scan_state {
1261 DECLARE_STATIC_KEY_FALSE(aql_disable);
1263 struct ieee80211_local {
1264 /* embed the driver visible part.
1265 * don't cast (use the static inlines below), but we keep
1266 * it first anyway so they become a no-op */
1267 struct ieee80211_hw hw;
1270 struct codel_vars *cvars;
1271 struct codel_params cparams;
1273 /* protects active_txqs and txqi->schedule_order */
1274 spinlock_t active_txq_lock[IEEE80211_NUM_ACS];
1275 struct list_head active_txqs[IEEE80211_NUM_ACS];
1276 u16 schedule_round[IEEE80211_NUM_ACS];
1279 u32 aql_txq_limit_low[IEEE80211_NUM_ACS];
1280 u32 aql_txq_limit_high[IEEE80211_NUM_ACS];
1282 atomic_t aql_total_pending_airtime;
1283 atomic_t aql_ac_pending_airtime[IEEE80211_NUM_ACS];
1285 const struct ieee80211_ops *ops;
1288 * private workqueue to mac80211. mac80211 makes this accessible
1289 * via ieee80211_queue_work()
1291 struct workqueue_struct *workqueue;
1293 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1294 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1295 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1296 spinlock_t queue_stop_reason_lock;
1299 int monitors, cooked_mntrs;
1300 /* number of interfaces with corresponding FIF_ flags */
1301 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1304 bool rx_mcast_action_reg;
1305 unsigned int filter_flags; /* FIF_* */
1307 bool wiphy_ciphers_allocated;
1311 /* protects the aggregated multicast list and filter calls */
1312 spinlock_t filter_lock;
1314 /* used for uploading changed mc list */
1315 struct work_struct reconfig_filter;
1317 /* aggregated multicast list */
1318 struct netdev_hw_addr_list mc_list;
1320 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1323 * suspended is true if we finished all the suspend _and_ we have
1324 * not yet come up from resume. This is to be used by mac80211
1325 * to ensure driver sanity during suspend and mac80211's own
1326 * sanity. It can eventually be used for WoW as well.
1330 /* suspending is true during the whole suspend process */
1334 * Resuming is true while suspended, but when we're reprogramming the
1335 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1336 * again even though some other parts of the stack are still suspended
1337 * and we still drop received frames to avoid waking the stack.
1342 * quiescing is true during the suspend process _only_ to
1343 * ease timer cancelling etc.
1347 /* device is started */
1350 /* device is during a HW reconfig */
1353 /* wowlan is enabled -- don't reconfig on resume */
1356 struct work_struct radar_detected_work;
1358 /* number of RX chains the hardware has */
1361 /* bitmap of which sbands were copied */
1364 int tx_headroom; /* required headroom for hardware/radiotap */
1366 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1367 * added to skb_queue will be processed, but frames in
1368 * skb_queue_unreliable may be dropped if the total length of these
1369 * queues increases over the limit. */
1370 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1371 struct tasklet_struct tasklet;
1372 struct sk_buff_head skb_queue;
1373 struct sk_buff_head skb_queue_unreliable;
1375 spinlock_t rx_path_lock;
1379 * The mutex only protects the list, hash table and
1380 * counter, reads are done with RCU.
1382 struct mutex sta_mtx;
1383 spinlock_t tim_lock;
1384 unsigned long num_sta;
1385 struct list_head sta_list;
1386 struct rhltable sta_hash;
1387 struct rhltable link_sta_hash;
1388 struct timer_list sta_cleanup;
1391 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1392 struct tasklet_struct tx_pending_tasklet;
1393 struct tasklet_struct wake_txqs_tasklet;
1395 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1397 /* number of interfaces with allmulti RX */
1398 atomic_t iff_allmultis;
1400 struct rate_control_ref *rate_ctrl;
1402 struct arc4_ctx wep_tx_ctx;
1403 struct arc4_ctx wep_rx_ctx;
1407 struct list_head interfaces;
1408 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1409 struct mutex iflist_mtx;
1412 * Key mutex, protects sdata's key_list and sta_info's
1413 * key pointers and ptk_idx (write access, they're RCU.)
1415 struct mutex key_mtx;
1417 /* mutex for scan and work locking */
1420 /* Scanning and BSS list */
1421 unsigned long scanning;
1422 struct cfg80211_ssid scan_ssid;
1423 struct cfg80211_scan_request *int_scan_req;
1424 struct cfg80211_scan_request __rcu *scan_req;
1425 struct ieee80211_scan_request *hw_scan_req;
1426 struct cfg80211_chan_def scan_chandef;
1427 enum nl80211_band hw_scan_band;
1428 int scan_channel_idx;
1430 int hw_scan_ies_bufsize;
1431 struct cfg80211_scan_info scan_info;
1433 struct work_struct sched_scan_stopped_work;
1434 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1435 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1436 u8 scan_addr[ETH_ALEN];
1438 unsigned long leave_oper_channel_time;
1439 enum mac80211_scan_state next_scan_state;
1440 struct delayed_work scan_work;
1441 struct ieee80211_sub_if_data __rcu *scan_sdata;
1442 /* For backward compatibility only -- do not use */
1443 struct cfg80211_chan_def _oper_chandef;
1445 /* Temporary remain-on-channel for off-channel operations */
1446 struct ieee80211_channel *tmp_channel;
1448 /* channel contexts */
1449 struct list_head chanctx_list;
1450 struct mutex chanctx_mtx;
1452 #ifdef CONFIG_MAC80211_LEDS
1453 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1454 struct led_trigger tpt_led;
1455 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1456 atomic_t radio_led_active, tpt_led_active;
1457 struct tpt_led_trigger *tpt_led_trigger;
1460 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1462 /* dot11CountersTable */
1463 u32 dot11TransmittedFragmentCount;
1464 u32 dot11MulticastTransmittedFrameCount;
1465 u32 dot11FailedCount;
1466 u32 dot11RetryCount;
1467 u32 dot11MultipleRetryCount;
1468 u32 dot11FrameDuplicateCount;
1469 u32 dot11ReceivedFragmentCount;
1470 u32 dot11MulticastReceivedFrameCount;
1471 u32 dot11TransmittedFrameCount;
1473 /* TX/RX handler statistics */
1474 unsigned int tx_handlers_drop;
1475 unsigned int tx_handlers_queued;
1476 unsigned int tx_handlers_drop_wep;
1477 unsigned int tx_handlers_drop_not_assoc;
1478 unsigned int tx_handlers_drop_unauth_port;
1479 unsigned int rx_handlers_drop;
1480 unsigned int rx_handlers_queued;
1481 unsigned int rx_handlers_drop_nullfunc;
1482 unsigned int rx_handlers_drop_defrag;
1483 unsigned int tx_expand_skb_head;
1484 unsigned int tx_expand_skb_head_cloned;
1485 unsigned int rx_expand_skb_head_defrag;
1486 unsigned int rx_handlers_fragments;
1487 unsigned int tx_status_drop;
1488 #define I802_DEBUG_INC(c) (c)++
1489 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1490 #define I802_DEBUG_INC(c) do { } while (0)
1491 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1494 int total_ps_buffered; /* total number of all buffered unicast and
1495 * multicast packets for power saving stations
1500 * PS can only be enabled when we have exactly one managed
1501 * interface (and monitors) in PS, this then points there.
1503 struct ieee80211_sub_if_data *ps_sdata;
1504 struct work_struct dynamic_ps_enable_work;
1505 struct work_struct dynamic_ps_disable_work;
1506 struct timer_list dynamic_ps_timer;
1507 struct notifier_block ifa_notifier;
1508 struct notifier_block ifa6_notifier;
1511 * The dynamic ps timeout configured from user space via WEXT -
1512 * this will override whatever chosen by mac80211 internally.
1514 int dynamic_ps_forced_timeout;
1516 int user_power_level; /* in dBm, for all interfaces */
1518 enum ieee80211_smps_mode smps_mode;
1520 struct work_struct restart_work;
1522 #ifdef CONFIG_MAC80211_DEBUGFS
1523 struct local_debugfsdentries {
1524 struct dentry *rcdir;
1525 struct dentry *keys;
1527 bool force_tx_status;
1531 * Remain-on-channel support
1533 struct delayed_work roc_work;
1534 struct list_head roc_list;
1535 struct work_struct hw_roc_start, hw_roc_done;
1536 unsigned long hw_roc_start_time;
1537 u64 roc_cookie_counter;
1539 struct idr ack_status_frames;
1540 spinlock_t ack_status_lock;
1542 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1544 /* virtual monitor interface */
1545 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1546 struct cfg80211_chan_def monitor_chandef;
1548 /* extended capabilities provided by mac80211 */
1552 static inline struct ieee80211_sub_if_data *
1553 IEEE80211_DEV_TO_SUB_IF(const struct net_device *dev)
1555 return netdev_priv(dev);
1558 static inline struct ieee80211_sub_if_data *
1559 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1561 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1564 static inline struct ieee80211_supported_band *
1565 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1567 struct ieee80211_local *local = sdata->local;
1568 struct ieee80211_chanctx_conf *chanctx_conf;
1569 enum nl80211_band band;
1571 WARN_ON(sdata->vif.valid_links);
1574 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
1576 if (!chanctx_conf) {
1581 band = chanctx_conf->def.chan->band;
1584 return local->hw.wiphy->bands[band];
1587 static inline struct ieee80211_supported_band *
1588 ieee80211_get_link_sband(struct ieee80211_link_data *link)
1590 struct ieee80211_local *local = link->sdata->local;
1591 struct ieee80211_chanctx_conf *chanctx_conf;
1592 enum nl80211_band band;
1595 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
1596 if (!chanctx_conf) {
1601 band = chanctx_conf->def.chan->band;
1604 return local->hw.wiphy->bands[band];
1607 /* this struct holds the value parsing from channel switch IE */
1608 struct ieee80211_csa_ie {
1609 struct cfg80211_chan_def chandef;
1615 u32 max_switch_time;
1618 /* Parsed Information Elements */
1619 struct ieee802_11_elems {
1624 /* pointers to IEs */
1625 const struct ieee80211_tdls_lnkie *lnk_id;
1626 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1627 const u8 *ext_capab;
1629 const u8 *supp_rates;
1630 const u8 *ds_params;
1631 const struct ieee80211_tim_ie *tim;
1635 const u8 *ext_supp_rates;
1637 const u8 *wmm_param;
1638 const struct ieee80211_ht_cap *ht_cap_elem;
1639 const struct ieee80211_ht_operation *ht_operation;
1640 const struct ieee80211_vht_cap *vht_cap_elem;
1641 const struct ieee80211_vht_operation *vht_operation;
1642 const struct ieee80211_meshconf_ie *mesh_config;
1644 const struct ieee80211_he_operation *he_operation;
1645 const struct ieee80211_he_spr *he_spr;
1646 const struct ieee80211_mu_edca_param_set *mu_edca_param_set;
1647 const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
1648 const struct ieee80211_tx_pwr_env *tx_pwr_env[IEEE80211_TPE_MAX_IE_COUNT];
1649 const u8 *uora_element;
1652 const __le16 *awake_window;
1656 const struct ieee80211_rann_ie *rann;
1657 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1658 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1659 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1660 const u8 *max_channel_switch_time;
1661 const u8 *country_elem;
1662 const u8 *pwr_constr_elem;
1663 const u8 *cisco_dtpc_elem;
1664 const struct ieee80211_timeout_interval_ie *timeout_int;
1665 const u8 *opmode_notif;
1666 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1667 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1668 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1669 const struct ieee80211_multiple_bssid_configuration *mbssid_config_ie;
1670 const struct ieee80211_bssid_index *bssid_index;
1671 u8 max_bssid_indicator;
1674 const struct ieee80211_addba_ext_ie *addba_ext_ie;
1675 const struct ieee80211_s1g_cap *s1g_capab;
1676 const struct ieee80211_s1g_oper_ie *s1g_oper;
1677 const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
1678 const struct ieee80211_aid_response_ie *aid_resp;
1679 const struct ieee80211_eht_cap_elem *eht_cap;
1680 const struct ieee80211_eht_operation *eht_operation;
1681 const struct ieee80211_multi_link_elem *multi_link;
1683 /* length of them, respectively */
1690 u8 ext_supp_rates_len;
1699 u8 country_elem_len;
1701 u8 tx_pwr_env_len[IEEE80211_TPE_MAX_IE_COUNT];
1705 /* whether a parse error occurred while retrieving these elements */
1709 static inline struct ieee80211_local *hw_to_local(
1710 struct ieee80211_hw *hw)
1712 return container_of(hw, struct ieee80211_local, hw);
1715 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1717 return container_of(txq, struct txq_info, txq);
1720 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1722 struct txq_info *txqi = to_txq_info(txq);
1724 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1728 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1730 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1731 status->flag & RX_FLAG_MACTIME_END);
1732 return !!(status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END |
1733 RX_FLAG_MACTIME_PLCP_START));
1736 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1737 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1739 /* This function returns the number of multicast stations connected to this
1740 * interface. It returns -1 if that number is not tracked, that is for netdevs
1741 * not in AP or AP_VLAN mode or when using 4addr.
1744 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1746 if (sdata->vif.type == NL80211_IFTYPE_AP)
1747 return atomic_read(&sdata->u.ap.num_mcast_sta);
1748 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1749 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1753 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1754 struct ieee80211_rx_status *status,
1755 unsigned int mpdu_len,
1756 unsigned int mpdu_offset);
1757 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1758 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1759 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1761 void ieee80211_vif_cfg_change_notify(struct ieee80211_sub_if_data *sdata,
1763 void ieee80211_link_info_change_notify(struct ieee80211_sub_if_data *sdata,
1764 struct ieee80211_link_data *link,
1766 void ieee80211_configure_filter(struct ieee80211_local *local);
1767 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1769 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1770 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1771 u64 *cookie, gfp_t gfp);
1773 void ieee80211_check_fast_rx(struct sta_info *sta);
1774 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1775 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1776 void ieee80211_clear_fast_rx(struct sta_info *sta);
1778 bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata,
1779 const u8 *addr, int *out_link_id);
1782 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1783 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1784 struct cfg80211_auth_request *req);
1785 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1786 struct cfg80211_assoc_request *req);
1787 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1788 struct cfg80211_deauth_request *req);
1789 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1790 struct cfg80211_disassoc_request *req);
1791 void ieee80211_send_pspoll(struct ieee80211_local *local,
1792 struct ieee80211_sub_if_data *sdata);
1793 void ieee80211_recalc_ps(struct ieee80211_local *local);
1794 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1795 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1796 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1797 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1798 struct sk_buff *skb);
1799 void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
1800 struct sk_buff *skb);
1801 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1802 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1803 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1804 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1805 __le16 fc, bool acked);
1806 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1807 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1808 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1809 void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1810 u8 reason, bool tx);
1811 void ieee80211_mgd_setup_link(struct ieee80211_link_data *link);
1812 void ieee80211_mgd_stop_link(struct ieee80211_link_data *link);
1815 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1816 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1817 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1818 const u8 *bssid, const u8 *addr, u32 supp_rates);
1819 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1820 struct cfg80211_ibss_params *params);
1821 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1822 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1823 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1824 struct sk_buff *skb);
1825 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1826 struct cfg80211_csa_settings *csa_settings);
1827 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1828 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1831 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1832 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1833 const u8 *bssid, const u8 *addr, u32 supp_rates);
1834 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1835 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1836 struct ocb_setup *setup);
1837 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1840 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1841 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1842 struct sk_buff *skb);
1843 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1844 struct cfg80211_csa_settings *csa_settings);
1845 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1847 /* scan/BSS handling */
1848 void ieee80211_scan_work(struct work_struct *work);
1849 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1850 const u8 *ssid, u8 ssid_len,
1851 struct ieee80211_channel **channels,
1852 unsigned int n_channels,
1853 enum nl80211_bss_scan_width scan_width);
1854 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1855 struct cfg80211_scan_request *req);
1856 void ieee80211_scan_cancel(struct ieee80211_local *local);
1857 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1858 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1860 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1861 struct ieee80211_bss *
1862 ieee80211_bss_info_update(struct ieee80211_local *local,
1863 struct ieee80211_rx_status *rx_status,
1864 struct ieee80211_mgmt *mgmt,
1866 struct ieee80211_channel *channel);
1867 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1868 struct ieee80211_bss *bss);
1870 /* scheduled scan handling */
1872 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1873 struct cfg80211_sched_scan_request *req);
1874 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1875 struct cfg80211_sched_scan_request *req);
1876 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1877 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1878 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1880 /* off-channel/mgmt-tx */
1881 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1882 void ieee80211_offchannel_return(struct ieee80211_local *local);
1883 void ieee80211_roc_setup(struct ieee80211_local *local);
1884 void ieee80211_start_next_roc(struct ieee80211_local *local);
1885 void ieee80211_roc_purge(struct ieee80211_local *local,
1886 struct ieee80211_sub_if_data *sdata);
1887 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1888 struct ieee80211_channel *chan,
1889 unsigned int duration, u64 *cookie);
1890 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1891 struct wireless_dev *wdev, u64 cookie);
1892 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1893 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1894 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1895 struct wireless_dev *wdev, u64 cookie);
1897 /* channel switch handling */
1898 void ieee80211_csa_finalize_work(struct work_struct *work);
1899 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1900 struct cfg80211_csa_settings *params);
1902 /* color change handling */
1903 void ieee80211_color_change_finalize_work(struct work_struct *work);
1905 /* interface handling */
1906 #define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
1907 NETIF_F_HW_CSUM | NETIF_F_SG | \
1908 NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
1909 #define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
1910 #define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
1911 MAC80211_SUPPORTED_FEATURES_RX)
1913 int ieee80211_iface_init(void);
1914 void ieee80211_iface_exit(void);
1915 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1916 unsigned char name_assign_type,
1917 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1918 struct vif_params *params);
1919 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1920 enum nl80211_iftype type);
1921 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1922 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1923 u32 ieee80211_idle_off(struct ieee80211_local *local);
1924 void ieee80211_recalc_idle(struct ieee80211_local *local);
1925 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1927 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1928 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1929 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1930 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1932 int ieee80211_vif_set_links(struct ieee80211_sub_if_data *sdata,
1935 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1936 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1938 void ieee80211_recalc_offload(struct ieee80211_local *local);
1940 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1942 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1946 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1947 void ieee80211_tx_pending(struct tasklet_struct *t);
1948 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1949 struct net_device *dev);
1950 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1951 struct net_device *dev);
1952 netdev_tx_t ieee80211_subif_start_xmit_8023(struct sk_buff *skb,
1953 struct net_device *dev);
1954 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1955 struct net_device *dev,
1959 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1960 struct sk_buff_head *skbs);
1962 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1963 struct sk_buff *skb, u32 info_flags);
1964 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1965 int retry_count, int shift, bool send_to_cooked,
1966 struct ieee80211_tx_status *status);
1968 void ieee80211_check_fast_xmit(struct sta_info *sta);
1969 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1970 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1971 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1972 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev,
1973 const u8 *buf, size_t len,
1974 const u8 *dest, __be16 proto, bool unencrypted,
1975 int link_id, u64 *cookie);
1976 int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
1977 const u8 *buf, size_t len);
1980 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1981 struct ieee80211_sta_ht_cap *ht_cap);
1982 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1983 struct ieee80211_supported_band *sband,
1984 const struct ieee80211_ht_cap *ht_cap_ie,
1985 struct link_sta_info *link_sta);
1986 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1987 const u8 *da, u16 tid,
1988 u16 initiator, u16 reason_code);
1989 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1990 enum ieee80211_smps_mode smps, const u8 *da,
1992 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1993 enum ieee80211_smps_mode smps_mode_new);
1995 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1996 u16 initiator, u16 reason, bool stop);
1997 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1998 u16 initiator, u16 reason, bool stop);
1999 void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
2000 u8 dialog_token, u16 timeout,
2001 u16 start_seq_num, u16 ba_policy, u16 tid,
2002 u16 buf_size, bool tx, bool auto_seq,
2003 const struct ieee80211_addba_ext_ie *addbaext);
2004 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
2005 enum ieee80211_agg_stop_reason reason);
2006 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
2007 struct sta_info *sta,
2008 struct ieee80211_mgmt *mgmt, size_t len);
2009 void ieee80211_process_addba_resp(struct ieee80211_local *local,
2010 struct sta_info *sta,
2011 struct ieee80211_mgmt *mgmt,
2013 void ieee80211_process_addba_request(struct ieee80211_local *local,
2014 struct sta_info *sta,
2015 struct ieee80211_mgmt *mgmt,
2018 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2019 enum ieee80211_agg_stop_reason reason);
2020 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
2021 enum ieee80211_agg_stop_reason reason);
2022 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
2023 struct tid_ampdu_tx *tid_tx);
2024 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
2025 struct tid_ampdu_tx *tid_tx);
2026 void ieee80211_ba_session_work(struct work_struct *work);
2027 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
2028 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
2030 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
2031 enum nl80211_smps_mode
2032 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps);
2036 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
2037 struct ieee80211_supported_band *sband,
2038 const struct ieee80211_vht_cap *vht_cap_ie,
2039 struct link_sta_info *link_sta);
2040 enum ieee80211_sta_rx_bandwidth
2041 ieee80211_sta_cap_rx_bw(struct link_sta_info *link_sta);
2042 enum ieee80211_sta_rx_bandwidth
2043 ieee80211_sta_cur_vht_bw(struct link_sta_info *link_sta);
2044 void ieee80211_sta_set_rx_nss(struct link_sta_info *link_sta);
2045 enum ieee80211_sta_rx_bandwidth
2046 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
2047 enum nl80211_chan_width
2048 ieee80211_sta_cap_chan_bw(struct link_sta_info *link_sta);
2049 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
2050 struct ieee80211_link_data *link,
2051 struct ieee80211_mgmt *mgmt);
2052 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2053 struct link_sta_info *sta,
2054 u8 opmode, enum nl80211_band band);
2055 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
2056 struct link_sta_info *sta,
2057 u8 opmode, enum nl80211_band band);
2058 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
2059 struct ieee80211_sta_vht_cap *vht_cap);
2060 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
2061 u16 vht_mask[NL80211_VHT_NSS_MAX]);
2062 enum nl80211_chan_width
2063 ieee80211_sta_rx_bw_to_chan_width(struct link_sta_info *sta);
2067 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
2068 struct ieee80211_supported_band *sband,
2069 const u8 *he_cap_ie, u8 he_cap_len,
2070 const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
2071 struct link_sta_info *link_sta);
2073 ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
2074 const struct ieee80211_he_spr *he_spr_ie_elem);
2077 ieee80211_he_op_ie_to_bss_conf(struct ieee80211_vif *vif,
2078 const struct ieee80211_he_operation *he_op_ie_elem);
2081 void ieee80211_s1g_sta_rate_init(struct sta_info *sta);
2082 bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb);
2083 void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata,
2084 struct sk_buff *skb);
2085 void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata,
2086 struct sk_buff *skb);
2088 /* Spectrum management */
2089 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
2090 struct ieee80211_mgmt *mgmt,
2093 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
2094 * @sdata: the sdata of the interface which has received the frame
2095 * @elems: parsed 802.11 elements received with the frame
2096 * @current_band: indicates the current band
2097 * @vht_cap_info: VHT capabilities of the transmitter
2098 * @conn_flags: contains information about own capabilities and restrictions
2099 * to decide which channel switch announcements can be accepted, using
2100 * flags from &enum ieee80211_conn_flags.
2101 * @bssid: the currently connected bssid (for reporting)
2102 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
2103 All of them will be filled with if success only.
2104 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
2106 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
2107 struct ieee802_11_elems *elems,
2108 enum nl80211_band current_band,
2110 ieee80211_conn_flags_t conn_flags, u8 *bssid,
2111 struct ieee80211_csa_ie *csa_ie);
2113 /* Suspend/resume and hw reconfiguration */
2114 int ieee80211_reconfig(struct ieee80211_local *local);
2115 void ieee80211_stop_device(struct ieee80211_local *local);
2117 int __ieee80211_suspend(struct ieee80211_hw *hw,
2118 struct cfg80211_wowlan *wowlan);
2120 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
2122 struct ieee80211_local *local = hw_to_local(hw);
2124 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
2125 !test_bit(SCAN_COMPLETED, &local->scanning),
2126 "%s: resume with hardware scan still in progress\n",
2127 wiphy_name(hw->wiphy));
2129 return ieee80211_reconfig(hw_to_local(hw));
2132 /* utility functions/constants */
2133 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
2134 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
2135 int rate, int erp, int short_preamble,
2137 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,
2138 struct ieee80211_tx_queue_params *qparam,
2140 void ieee80211_set_wmm_default(struct ieee80211_link_data *link,
2141 bool bss_notify, bool enable_qos);
2142 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
2143 struct sta_info *sta, struct sk_buff *skb);
2145 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2146 struct sk_buff *skb, int tid, int link_id,
2147 enum nl80211_band band);
2149 /* sta_out needs to be checked for ERR_PTR() before using */
2150 int ieee80211_lookup_ra_sta(struct ieee80211_sub_if_data *sdata,
2151 struct sk_buff *skb,
2152 struct sta_info **sta_out);
2155 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
2156 struct sk_buff *skb, int tid,
2157 enum nl80211_band band)
2160 __ieee80211_tx_skb_tid_band(sdata, skb, tid, -1, band);
2164 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
2165 struct sk_buff *skb, int tid, int link_id);
2167 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
2168 struct sk_buff *skb)
2170 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
2171 ieee80211_tx_skb_tid(sdata, skb, 7, -1);
2175 * struct ieee80211_elems_parse_params - element parsing parameters
2176 * @start: pointer to the elements
2177 * @len: length of the elements
2178 * @action: %true if the elements came from an action frame
2179 * @filter: bitmap of element IDs to filter out while calculating
2181 * @crc: CRC starting value
2182 * @bss: the BSS to parse this as, for multi-BSSID cases this can
2183 * represent a non-transmitting BSS in which case the data
2184 * for that non-transmitting BSS is returned
2185 * @link_id: the link ID to parse elements for, if a STA profile
2186 * is present in the multi-link element, or -1 to ignore
2188 struct ieee80211_elems_parse_params {
2194 struct cfg80211_bss *bss;
2198 struct ieee802_11_elems *
2199 ieee802_11_parse_elems_full(struct ieee80211_elems_parse_params *params);
2201 static inline struct ieee802_11_elems *
2202 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
2203 u64 filter, u32 crc,
2204 struct cfg80211_bss *bss)
2206 struct ieee80211_elems_parse_params params = {
2216 return ieee802_11_parse_elems_full(¶ms);
2219 static inline struct ieee802_11_elems *
2220 ieee802_11_parse_elems(const u8 *start, size_t len, bool action,
2221 struct cfg80211_bss *bss)
2223 return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss);
2226 void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos);
2228 extern const int ieee802_1d_to_ac[8];
2230 static inline int ieee80211_ac_from_tid(int tid)
2232 return ieee802_1d_to_ac[tid & 7];
2235 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
2236 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
2237 void ieee80211_dynamic_ps_timer(struct timer_list *t);
2238 void ieee80211_send_nullfunc(struct ieee80211_local *local,
2239 struct ieee80211_sub_if_data *sdata,
2241 void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
2242 struct ieee80211_sub_if_data *sdata);
2243 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
2244 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
2246 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
2247 unsigned long queues,
2248 enum queue_stop_reason reason,
2250 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
2251 struct ieee80211_sub_if_data *sdata,
2252 enum queue_stop_reason reason);
2253 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
2254 struct ieee80211_sub_if_data *sdata,
2255 enum queue_stop_reason reason);
2256 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
2257 unsigned long queues,
2258 enum queue_stop_reason reason,
2260 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
2261 enum queue_stop_reason reason,
2263 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
2264 enum queue_stop_reason reason,
2266 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
2267 void ieee80211_add_pending_skb(struct ieee80211_local *local,
2268 struct sk_buff *skb);
2269 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
2270 struct sk_buff_head *skbs);
2271 void ieee80211_flush_queues(struct ieee80211_local *local,
2272 struct ieee80211_sub_if_data *sdata, bool drop);
2273 void __ieee80211_flush_queues(struct ieee80211_local *local,
2274 struct ieee80211_sub_if_data *sdata,
2275 unsigned int queues, bool drop);
2277 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
2280 * It's unsafe to try to do any work during reconfigure flow.
2281 * When the flow ends the work will be requeued.
2283 if (local->in_reconfig)
2287 * If quiescing is set, we are racing with __ieee80211_suspend.
2288 * __ieee80211_suspend flushes the workers after setting quiescing,
2289 * and we check quiescing / suspended before enqueing new workers.
2290 * We should abort the worker to avoid the races below.
2292 if (local->quiescing)
2296 * We might already be suspended if the following scenario occurs:
2297 * __ieee80211_suspend Control path
2299 * if (local->quiescing)
2301 * local->quiescing = true;
2302 * flush_workqueue();
2304 * local->suspended = true;
2305 * local->quiescing = false;
2306 * worker starts running...
2308 if (local->suspended)
2314 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2315 void ieee80211_txq_set_params(struct ieee80211_local *local);
2316 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2317 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2318 struct sta_info *sta,
2319 struct txq_info *txq, int tid);
2320 void ieee80211_txq_purge(struct ieee80211_local *local,
2321 struct txq_info *txqi);
2322 void ieee80211_txq_remove_vlan(struct ieee80211_local *local,
2323 struct ieee80211_sub_if_data *sdata);
2324 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
2325 struct txq_info *txqi);
2326 void ieee80211_wake_txqs(struct tasklet_struct *t);
2327 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2328 u16 transaction, u16 auth_alg, u16 status,
2329 const u8 *extra, size_t extra_len, const u8 *bssid,
2330 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2332 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2333 const u8 *da, const u8 *bssid,
2334 u16 stype, u16 reason,
2335 bool send_frame, u8 *frame_buf);
2338 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0),
2339 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1),
2340 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2),
2343 int ieee80211_build_preq_ies(struct ieee80211_sub_if_data *sdata, u8 *buffer,
2345 struct ieee80211_scan_ies *ie_desc,
2346 const u8 *ie, size_t ie_len,
2347 u8 bands_used, u32 *rate_masks,
2348 struct cfg80211_chan_def *chandef,
2350 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2351 const u8 *src, const u8 *dst,
2353 struct ieee80211_channel *chan,
2354 const u8 *ssid, size_t ssid_len,
2355 const u8 *ie, size_t ie_len,
2357 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2358 struct ieee802_11_elems *elems,
2359 enum nl80211_band band, u32 *basic_rates);
2360 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2361 struct ieee80211_link_data *link,
2362 enum ieee80211_smps_mode smps_mode);
2363 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata,
2364 struct ieee80211_link_data *link);
2365 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata,
2368 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2369 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2371 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2372 const struct cfg80211_chan_def *chandef,
2373 u16 prot_mode, bool rifs_mode);
2374 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2375 const struct cfg80211_chan_def *chandef);
2376 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2378 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2379 const struct cfg80211_chan_def *chandef);
2380 u8 ieee80211_ie_len_he_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2381 u8 *ieee80211_ie_build_he_cap(ieee80211_conn_flags_t disable_flags, u8 *pos,
2382 const struct ieee80211_sta_he_cap *he_cap,
2384 void ieee80211_ie_build_he_6ghz_cap(struct ieee80211_sub_if_data *sdata,
2385 struct sk_buff *skb);
2386 u8 *ieee80211_ie_build_he_oper(u8 *pos, struct cfg80211_chan_def *chandef);
2387 int ieee80211_parse_bitrates(enum nl80211_chan_width width,
2388 const struct ieee80211_supported_band *sband,
2389 const u8 *srates, int srates_len, u32 *rates);
2390 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2391 struct sk_buff *skb, bool need_basic,
2392 enum nl80211_band band);
2393 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2394 struct sk_buff *skb, bool need_basic,
2395 enum nl80211_band band);
2396 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2397 void ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
2398 struct ieee80211_sta_s1g_cap *caps,
2399 struct sk_buff *skb);
2400 void ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata,
2401 struct sk_buff *skb);
2403 /* channel management */
2404 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2405 struct cfg80211_chan_def *chandef);
2406 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
2407 const struct ieee80211_vht_operation *oper,
2408 const struct ieee80211_ht_operation *htop,
2409 struct cfg80211_chan_def *chandef);
2410 void ieee80211_chandef_eht_oper(struct ieee80211_sub_if_data *sdata,
2411 const struct ieee80211_eht_operation *eht_oper,
2412 bool support_160, bool support_320,
2413 struct cfg80211_chan_def *chandef);
2414 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
2415 const struct ieee80211_he_operation *he_oper,
2416 const struct ieee80211_eht_operation *eht_oper,
2417 struct cfg80211_chan_def *chandef);
2418 bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
2419 struct cfg80211_chan_def *chandef);
2420 ieee80211_conn_flags_t ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2423 ieee80211_link_use_channel(struct ieee80211_link_data *link,
2424 const struct cfg80211_chan_def *chandef,
2425 enum ieee80211_chanctx_mode mode);
2427 ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link,
2428 const struct cfg80211_chan_def *chandef,
2429 enum ieee80211_chanctx_mode mode,
2430 bool radar_required);
2432 ieee80211_link_use_reserved_context(struct ieee80211_link_data *link);
2433 int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link);
2436 ieee80211_link_change_bandwidth(struct ieee80211_link_data *link,
2437 const struct cfg80211_chan_def *chandef,
2439 void ieee80211_link_release_channel(struct ieee80211_link_data *link);
2440 void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link);
2441 void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link,
2443 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2444 struct ieee80211_chanctx *ctx);
2446 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2447 struct ieee80211_chanctx *chanctx);
2448 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2449 struct ieee80211_chanctx *ctx);
2450 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2452 void ieee80211_dfs_cac_timer(unsigned long data);
2453 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2454 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2455 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2456 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2457 struct cfg80211_csa_settings *csa_settings);
2459 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2460 struct ieee80211_sub_if_data *sdata);
2461 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2462 const struct cfg80211_chan_def *chandef,
2463 enum ieee80211_chanctx_mode chanmode,
2465 int ieee80211_max_num_channels(struct ieee80211_local *local);
2466 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2467 struct ieee80211_chanctx *ctx);
2470 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2471 const u8 *peer, u8 action_code, u8 dialog_token,
2472 u16 status_code, u32 peer_capability,
2473 bool initiator, const u8 *extra_ies,
2474 size_t extra_ies_len);
2475 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2476 const u8 *peer, enum nl80211_tdls_operation oper);
2477 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2478 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2479 const u8 *addr, u8 oper_class,
2480 struct cfg80211_chan_def *chandef);
2481 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2482 struct net_device *dev,
2484 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2485 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
2486 const u8 *peer, u16 reason);
2488 ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
2489 struct sk_buff *skb);
2492 const char *ieee80211_get_reason_code_string(u16 reason_code);
2493 u16 ieee80211_encode_usf(int val);
2494 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
2495 enum nl80211_iftype type);
2497 extern const struct ethtool_ops ieee80211_ethtool_ops;
2499 u32 ieee80211_calc_expected_tx_airtime(struct ieee80211_hw *hw,
2500 struct ieee80211_vif *vif,
2501 struct ieee80211_sta *pubsta,
2502 int len, bool ampdu);
2503 #ifdef CONFIG_MAC80211_NOINLINE
2504 #define debug_noinline noinline
2506 #define debug_noinline
2509 void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache);
2510 void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache);
2512 u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata, u8 iftype);
2513 u8 *ieee80211_ie_build_eht_cap(u8 *pos,
2514 const struct ieee80211_sta_he_cap *he_cap,
2515 const struct ieee80211_sta_eht_cap *eht_cap,
2519 ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata,
2520 struct ieee80211_supported_band *sband,
2521 const u8 *he_cap_ie, u8 he_cap_len,
2522 const struct ieee80211_eht_cap_elem *eht_cap_ie_elem,
2524 struct link_sta_info *link_sta);
2525 #endif /* IEEE80211_I_H */