2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
5 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2013-2015 Intel Mobile Communications GmbH
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
16 #include <linux/kernel.h>
17 #include <linux/device.h>
18 #include <linux/if_ether.h>
19 #include <linux/interrupt.h>
20 #include <linux/list.h>
21 #include <linux/netdevice.h>
22 #include <linux/skbuff.h>
23 #include <linux/workqueue.h>
24 #include <linux/types.h>
25 #include <linux/spinlock.h>
26 #include <linux/etherdevice.h>
27 #include <linux/leds.h>
28 #include <linux/idr.h>
29 #include <linux/rhashtable.h>
30 #include <net/ieee80211_radiotap.h>
31 #include <net/cfg80211.h>
32 #include <net/mac80211.h>
38 extern const struct cfg80211_ops mac80211_config_ops;
40 struct ieee80211_local;
42 /* Maximum number of broadcast/multicast frames to buffer when some of the
43 * associated stations are using power saving. */
44 #define AP_MAX_BC_BUFFER 128
46 /* Maximum number of frames buffered to all STAs, including multicast frames.
47 * Note: increasing this limit increases the potential memory requirement. Each
48 * frame can be up to about 2 kB long. */
49 #define TOTAL_MAX_TX_BUFFER 512
51 /* Required encryption head and tailroom */
52 #define IEEE80211_ENCRYPT_HEADROOM 8
53 #define IEEE80211_ENCRYPT_TAILROOM 18
55 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
56 * reception of at least three fragmented frames. This limit can be increased
57 * by changing this define, at the cost of slower frame reassembly and
58 * increased memory use (about 2 kB of RAM per entry). */
59 #define IEEE80211_FRAGMENT_MAX 4
61 /* power level hasn't been configured (or set to automatic) */
62 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
65 * Some APs experience problems when working with U-APSD. Decreasing the
66 * probability of that happening by using legacy mode for all ACs but VO isn't
69 * Cisco 4410N originally forced us to enable VO by default only because it
70 * treated non-VO ACs as legacy.
72 * However some APs (notably Netgear R7000) silently reclassify packets to
73 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
74 * clients would never see some frames (e.g. ARP responses) or would fetch them
75 * accidentally after a long time.
77 * It makes little sense to enable u-APSD queues by default because it needs
78 * userspace applications to be aware of it to actually take advantage of the
79 * possible additional powersavings. Implicitly depending on driver autotrigger
80 * frame support doesn't make much sense.
82 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0
84 #define IEEE80211_DEFAULT_MAX_SP_LEN \
85 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
87 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS];
89 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
91 #define IEEE80211_MAX_NAN_INSTANCE_ID 255
93 struct ieee80211_fragment_entry {
94 struct sk_buff_head skb_list;
95 unsigned long first_frag_time;
100 bool check_sequential_pn; /* needed for CCMP/GCMP */
101 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
105 struct ieee80211_bss {
106 u32 device_ts_beacon, device_ts_presp;
109 bool uapsd_supported;
111 #define IEEE80211_MAX_SUPP_RATES 32
112 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
113 size_t supp_rates_len;
114 struct ieee80211_rate *beacon_rate;
117 * During association, we save an ERP value from a probe response so
118 * that we can feed ERP info to the driver when handling the
119 * association completes. these fields probably won't be up-to-date
120 * otherwise, you probably don't want to use them.
125 /* Keep track of the corruption of the last beacon/probe response. */
128 /* Keep track of what bits of information we have valid info for. */
133 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
134 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
135 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
137 * These are bss flags that are attached to a bss in the
138 * @corrupt_data field of &struct ieee80211_bss.
140 enum ieee80211_bss_corrupt_data_flags {
141 IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
142 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
146 * enum ieee80211_valid_data_flags - BSS valid data flags
147 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
148 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
149 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
151 * These are bss flags that are attached to a bss in the
152 * @valid_data field of &struct ieee80211_bss. They show which parts
153 * of the data structure were received as a result of an un-corrupted
154 * beacon/probe response.
156 enum ieee80211_bss_valid_data_flags {
157 IEEE80211_BSS_VALID_WMM = BIT(1),
158 IEEE80211_BSS_VALID_RATES = BIT(2),
159 IEEE80211_BSS_VALID_ERP = BIT(3)
162 typedef unsigned __bitwise ieee80211_tx_result;
163 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
164 #define TX_DROP ((__force ieee80211_tx_result) 1u)
165 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
167 #define IEEE80211_TX_UNICAST BIT(1)
168 #define IEEE80211_TX_PS_BUFFERED BIT(2)
170 struct ieee80211_tx_data {
172 struct sk_buff_head skbs;
173 struct ieee80211_local *local;
174 struct ieee80211_sub_if_data *sdata;
175 struct sta_info *sta;
176 struct ieee80211_key *key;
177 struct ieee80211_tx_rate rate;
183 typedef unsigned __bitwise ieee80211_rx_result;
184 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
185 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
186 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
187 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
190 * enum ieee80211_packet_rx_flags - packet RX flags
191 * @IEEE80211_RX_AMSDU: a-MSDU packet
192 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
193 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
195 * These are per-frame flags that are attached to a frame in the
196 * @rx_flags field of &struct ieee80211_rx_status.
198 enum ieee80211_packet_rx_flags {
199 IEEE80211_RX_AMSDU = BIT(3),
200 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
201 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
205 * enum ieee80211_rx_flags - RX data flags
207 * @IEEE80211_RX_CMNTR: received on cooked monitor already
208 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
209 * to cfg80211_report_obss_beacon().
211 * These flags are used across handling multiple interfaces
212 * for a single frame.
214 enum ieee80211_rx_flags {
215 IEEE80211_RX_CMNTR = BIT(0),
216 IEEE80211_RX_BEACON_REPORTED = BIT(1),
219 struct ieee80211_rx_data {
220 struct napi_struct *napi;
222 struct ieee80211_local *local;
223 struct ieee80211_sub_if_data *sdata;
224 struct sta_info *sta;
225 struct ieee80211_key *key;
230 * Index into sequence numbers array, 0..16
231 * since the last (16) is used for non-QoS,
232 * will be 16 on non-QoS frames.
237 * Index into the security IV/PN arrays, 0..16
238 * since the last (16) is used for CCMP-encrypted
239 * management frames, will be set to 16 on mgmt
240 * frames and 0 on non-QoS frames.
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;
260 int head_len, tail_len;
261 struct ieee80211_meshconf_ie *meshconf;
262 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
263 u8 csa_current_counter;
264 struct rcu_head rcu_head;
268 struct rcu_head rcu_head;
270 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
275 /* yes, this looks ugly, but guarantees that we can later use
277 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
278 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
279 __aligned(__alignof__(unsigned long));
280 struct sk_buff_head bc_buf;
281 atomic_t num_sta_ps; /* number of stations in PS mode */
286 struct ieee80211_if_ap {
287 struct beacon_data __rcu *beacon;
288 struct probe_resp __rcu *probe_resp;
290 /* to be used after channel switch. */
291 struct cfg80211_beacon_data *next_beacon;
292 struct list_head vlans; /* write-protected with RTNL and local->mtx */
295 atomic_t num_mcast_sta; /* number of stations receiving multicast */
296 enum ieee80211_smps_mode req_smps, /* requested smps mode */
297 driver_smps_mode; /* smps mode request */
299 struct work_struct request_smps_work;
300 bool multicast_to_unicast;
303 struct ieee80211_if_wds {
304 struct sta_info *sta;
305 u8 remote_addr[ETH_ALEN];
308 struct ieee80211_if_vlan {
309 struct list_head list; /* write-protected with RTNL and local->mtx */
311 /* used for all tx if the VLAN is configured to 4-addr mode */
312 struct sta_info __rcu *sta;
313 atomic_t num_mcast_sta; /* number of stations receiving multicast */
317 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
318 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
319 __u32 fwded_frames; /* Mesh total forwarded frames */
320 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
321 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
322 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
325 #define PREQ_Q_F_START 0x1
326 #define PREQ_Q_F_REFRESH 0x2
327 struct mesh_preq_queue {
328 struct list_head list;
333 struct ieee80211_roc_work {
334 struct list_head list;
336 struct ieee80211_sub_if_data *sdata;
338 struct ieee80211_channel *chan;
340 bool started, abort, hw_begun, notified;
343 unsigned long start_time;
345 u32 duration, req_duration;
346 struct sk_buff *frame;
347 u64 cookie, mgmt_tx_cookie;
348 enum ieee80211_roc_type type;
351 /* flags used in struct ieee80211_if_managed.flags */
352 enum ieee80211_sta_flags {
353 IEEE80211_STA_CONNECTION_POLL = BIT(1),
354 IEEE80211_STA_CONTROL_PORT = BIT(2),
355 IEEE80211_STA_DISABLE_HT = BIT(4),
356 IEEE80211_STA_MFP_ENABLED = BIT(6),
357 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
358 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
359 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
360 IEEE80211_STA_DISABLE_40MHZ = BIT(10),
361 IEEE80211_STA_DISABLE_VHT = BIT(11),
362 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
363 IEEE80211_STA_DISABLE_160MHZ = BIT(13),
364 IEEE80211_STA_DISABLE_WMM = BIT(14),
365 IEEE80211_STA_ENABLE_RRM = BIT(15),
368 struct ieee80211_mgd_auth_data {
369 struct cfg80211_bss *bss;
370 unsigned long timeout;
372 u16 algorithm, expected_transaction;
374 u8 key[WLAN_KEY_LEN_WEP104];
377 bool timeout_started;
379 u16 sae_trans, sae_status;
384 struct ieee80211_mgd_assoc_data {
385 struct cfg80211_bss *bss;
386 const u8 *supp_rates;
388 unsigned long timeout;
392 u8 prev_bssid[ETH_ALEN];
393 u8 ssid[IEEE80211_MAX_SSID_LEN];
399 bool timeout_started;
403 struct ieee80211_vht_cap ap_vht_cap;
405 u8 fils_nonces[2 * FILS_NONCE_LEN];
406 u8 fils_kek[FILS_MAX_KEK_LEN];
413 struct ieee80211_sta_tx_tspec {
414 /* timestamp of the first packet in the time slice */
415 unsigned long time_slice_start;
417 u32 admitted_time; /* in usecs, unlike over the air */
419 s8 up; /* signed to be able to invalidate with -1 during teardown */
421 /* consumed TX time in microseconds in the time slice */
422 u32 consumed_tx_time;
424 TX_TSPEC_ACTION_NONE = 0,
425 TX_TSPEC_ACTION_DOWNGRADE,
426 TX_TSPEC_ACTION_STOP_DOWNGRADE,
431 DECLARE_EWMA(beacon_signal, 4, 4)
433 struct ieee80211_if_managed {
434 struct timer_list timer;
435 struct timer_list conn_mon_timer;
436 struct timer_list bcn_mon_timer;
437 struct timer_list chswitch_timer;
438 struct work_struct monitor_work;
439 struct work_struct chswitch_work;
440 struct work_struct beacon_connection_loss_work;
441 struct work_struct csa_connection_drop_work;
443 unsigned long beacon_timeout;
444 unsigned long probe_timeout;
445 int probe_send_count;
446 bool nullfunc_failed;
447 bool connection_loss;
449 struct cfg80211_bss *associated;
450 struct ieee80211_mgd_auth_data *auth_data;
451 struct ieee80211_mgd_assoc_data *assoc_data;
453 u8 bssid[ETH_ALEN] __aligned(2);
457 bool powersave; /* powersave requested for this iface */
458 bool broken_ap; /* AP is broken -- turn off powersave */
461 enum ieee80211_smps_mode req_smps, /* requested smps mode */
462 driver_smps_mode; /* smps mode request */
464 struct work_struct request_smps_work;
468 bool csa_waiting_bcn;
469 bool csa_ignored_same_chan;
471 bool beacon_crc_valid;
475 bool status_received;
479 IEEE80211_MFP_DISABLED,
480 IEEE80211_MFP_OPTIONAL,
481 IEEE80211_MFP_REQUIRED
482 } mfp; /* management frame protection */
485 * Bitmask of enabled u-apsd queues,
486 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
489 unsigned int uapsd_queues;
492 * Maximum number of buffered frames AP can deliver during a
493 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
494 * Needs a new association to take effect.
496 unsigned int uapsd_max_sp_len;
498 int wmm_last_param_set;
504 struct ewma_beacon_signal ave_beacon_signal;
507 * Number of Beacon frames used in ave_beacon_signal. This can be used
508 * to avoid generating less reliable cqm events that would be based
509 * only on couple of received frames.
511 unsigned int count_beacon_signal;
513 /* Number of times beacon loss was invoked. */
514 unsigned int beacon_loss_count;
517 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
518 * that triggered a cqm event. 0 indicates that no event has been
519 * generated for the current association.
521 int last_cqm_event_signal;
524 * State variables for keeping track of RSSI of the AP currently
525 * connected to and informing driver when RSSI has gone
526 * below/above a certain threshold.
528 int rssi_min_thold, rssi_max_thold;
529 int last_ave_beacon_signal;
531 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
532 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
533 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
534 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
537 u8 tdls_peer[ETH_ALEN] __aligned(2);
538 struct delayed_work tdls_peer_del_work;
539 struct sk_buff *orig_teardown_skb; /* The original teardown skb */
540 struct sk_buff *teardown_skb; /* A copy to send through the AP */
541 spinlock_t teardown_lock; /* To lock changing teardown_skb */
542 bool tdls_chan_switch_prohibited;
543 bool tdls_wider_bw_prohibited;
545 /* WMM-AC TSPEC support */
546 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
547 /* Use a separate work struct so that we can do something here
548 * while the sdata->work is flushing the queues, for example.
549 * otherwise, in scenarios where we hardly get any traffic out
550 * on the BE queue, but there's a lot of VO traffic, we might
551 * get stuck in a downgraded situation and flush takes forever.
553 struct delayed_work tx_tspec_wk;
556 struct ieee80211_if_ibss {
557 struct timer_list timer;
558 struct work_struct csa_connection_drop_work;
560 unsigned long last_scan_completed;
569 bool userspace_handles_dfs;
571 u8 bssid[ETH_ALEN] __aligned(2);
572 u8 ssid[IEEE80211_MAX_SSID_LEN];
575 struct cfg80211_chan_def chandef;
577 unsigned long ibss_join_req;
578 /* probe response/beacon for IBSS */
579 struct beacon_data __rcu *presp;
581 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
582 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
584 spinlock_t incomplete_lock;
585 struct list_head incomplete_stations;
588 IEEE80211_IBSS_MLME_SEARCH,
589 IEEE80211_IBSS_MLME_JOINED,
594 * struct ieee80211_if_ocb - OCB mode state
596 * @housekeeping_timer: timer for periodic invocation of a housekeeping task
597 * @wrkq_flags: OCB deferred task action
598 * @incomplete_lock: delayed STA insertion lock
599 * @incomplete_stations: list of STAs waiting for delayed insertion
600 * @joined: indication if the interface is connected to an OCB network
602 struct ieee80211_if_ocb {
603 struct timer_list housekeeping_timer;
604 unsigned long wrkq_flags;
606 spinlock_t incomplete_lock;
607 struct list_head incomplete_stations;
613 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
615 * these declarations define the interface, which enables
616 * vendor-specific mesh synchronization
619 struct ieee802_11_elems;
620 struct ieee80211_mesh_sync_ops {
621 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
623 struct ieee80211_mgmt *mgmt,
624 struct ieee802_11_elems *elems,
625 struct ieee80211_rx_status *rx_status);
627 /* should be called with beacon_data under RCU read lock */
628 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata,
629 struct beacon_data *beacon);
630 /* add other framework functions here */
633 struct mesh_csa_settings {
634 struct rcu_head rcu_head;
635 struct cfg80211_csa_settings settings;
638 struct ieee80211_if_mesh {
639 struct timer_list housekeeping_timer;
640 struct timer_list mesh_path_timer;
641 struct timer_list mesh_path_root_timer;
643 unsigned long wrkq_flags;
644 unsigned long mbss_changed;
646 bool userspace_handles_dfs;
648 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
650 /* Active Path Selection Protocol Identifier */
652 /* Active Path Selection Metric Identifier */
654 /* Congestion Control Mode Identifier */
656 /* Synchronization Protocol Identifier */
658 /* Authentication Protocol Identifier */
660 /* Local mesh Sequence Number */
662 /* Last used PREQ ID */
665 /* Timestamp of last SN update */
666 unsigned long last_sn_update;
667 /* Time when it's ok to send next PERR */
668 unsigned long next_perr;
669 /* Timestamp of last PREQ sent */
670 unsigned long last_preq;
671 struct mesh_rmc *rmc;
672 spinlock_t mesh_preq_queue_lock;
673 struct mesh_preq_queue preq_queue;
675 struct mesh_stats mshstats;
676 struct mesh_config mshcfg;
677 atomic_t estab_plinks;
679 bool accepting_plinks;
681 struct beacon_data __rcu *beacon;
685 IEEE80211_MESH_SEC_NONE = 0x0,
686 IEEE80211_MESH_SEC_AUTHED = 0x1,
687 IEEE80211_MESH_SEC_SECURED = 0x2,
690 /* Extensible Synchronization Framework */
691 const struct ieee80211_mesh_sync_ops *sync_ops;
692 s64 sync_offset_clockdrift_max;
693 spinlock_t sync_offset_lock;
694 /* mesh power save */
695 enum nl80211_mesh_power_mode nonpeer_pm;
696 int ps_peers_light_sleep;
697 int ps_peers_deep_sleep;
699 /* Channel Switching Support */
700 struct mesh_csa_settings __rcu *csa;
702 IEEE80211_MESH_CSA_ROLE_NONE,
703 IEEE80211_MESH_CSA_ROLE_INIT,
704 IEEE80211_MESH_CSA_ROLE_REPEATER,
709 /* offset from skb->data while building IE */
712 struct mesh_table *mesh_paths;
713 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
714 int mesh_paths_generation;
715 int mpp_paths_generation;
718 #ifdef CONFIG_MAC80211_MESH
719 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
720 do { (msh)->mshstats.name++; } while (0)
722 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
727 * enum ieee80211_sub_if_data_flags - virtual interface flags
729 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
730 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
731 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
732 * associated stations and deliver multicast frames both
733 * back to wireless media and to the local net stack.
734 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
735 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
737 enum ieee80211_sub_if_data_flags {
738 IEEE80211_SDATA_ALLMULTI = BIT(0),
739 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
740 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
741 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
742 IEEE80211_SDATA_IN_DRIVER = BIT(5),
746 * enum ieee80211_sdata_state_bits - virtual interface state bits
747 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
748 * mirrors netif_running() but is separate for interface type
749 * change handling while the interface is up
750 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
751 * mode, so queues are stopped
752 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
753 * to offchannel, reset when offchannel returns
755 enum ieee80211_sdata_state_bits {
757 SDATA_STATE_OFFCHANNEL,
758 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
762 * enum ieee80211_chanctx_mode - channel context configuration mode
764 * @IEEE80211_CHANCTX_SHARED: channel context may be used by
765 * multiple interfaces
766 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
767 * only by a single interface. This can be used for example for
768 * non-fixed channel IBSS.
770 enum ieee80211_chanctx_mode {
771 IEEE80211_CHANCTX_SHARED,
772 IEEE80211_CHANCTX_EXCLUSIVE
776 * enum ieee80211_chanctx_replace_state - channel context replacement state
778 * This is used for channel context in-place reservations that require channel
779 * context switch/swap.
781 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
782 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
783 * by a (not yet registered) channel context pointed by %replace_ctx.
784 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
785 * replaces an existing channel context pointed to by %replace_ctx.
787 enum ieee80211_chanctx_replace_state {
788 IEEE80211_CHANCTX_REPLACE_NONE,
789 IEEE80211_CHANCTX_WILL_BE_REPLACED,
790 IEEE80211_CHANCTX_REPLACES_OTHER,
793 struct ieee80211_chanctx {
794 struct list_head list;
795 struct rcu_head rcu_head;
797 struct list_head assigned_vifs;
798 struct list_head reserved_vifs;
800 enum ieee80211_chanctx_replace_state replace_state;
801 struct ieee80211_chanctx *replace_ctx;
803 enum ieee80211_chanctx_mode mode;
806 struct ieee80211_chanctx_conf conf;
809 struct mac80211_qos_map {
810 struct cfg80211_qos_map qos_map;
811 struct rcu_head rcu_head;
814 enum txq_info_flags {
817 IEEE80211_TXQ_NO_AMSDU,
821 * struct txq_info - per tid queue
823 * @tin: contains packets split into multiple flows
824 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
825 * a fq_flow which is already owned by a different tin
826 * @def_cvars: codel vars for @def_flow
827 * @frags: used to keep fragments created after dequeue
831 struct fq_flow def_flow;
832 struct codel_vars def_cvars;
833 struct codel_stats cstats;
834 struct sk_buff_head frags;
838 struct ieee80211_txq txq;
841 struct ieee80211_if_mntr {
843 u8 mu_follow_addr[ETH_ALEN] __aligned(2);
845 struct list_head list;
849 * struct ieee80211_if_nan - NAN state
851 * @conf: current NAN configuration
852 * @func_ids: a bitmap of available instance_id's
854 struct ieee80211_if_nan {
855 struct cfg80211_nan_conf conf;
857 /* protects function_inst_ids */
858 spinlock_t func_lock;
859 struct idr function_inst_ids;
862 struct ieee80211_sub_if_data {
863 struct list_head list;
865 struct wireless_dev wdev;
868 struct list_head key_list;
870 /* count for keys needing tailroom space allocation */
871 int crypto_tx_tailroom_needed_cnt;
872 int crypto_tx_tailroom_pending_dec;
873 struct delayed_work dec_tailroom_needed_wk;
875 struct net_device *dev;
876 struct ieee80211_local *local;
884 /* Fragment table for host-based reassembly */
885 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
886 unsigned int fragment_next;
888 /* TID bitmap for NoAck policy */
891 /* bit field of ACM bits (BIT(802.1D tag)) */
894 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
895 struct ieee80211_key __rcu *default_unicast_key;
896 struct ieee80211_key __rcu *default_multicast_key;
897 struct ieee80211_key __rcu *default_mgmt_key;
900 __be16 control_port_protocol;
901 bool control_port_no_encrypt;
902 int encrypt_headroom;
904 atomic_t num_tx_queued;
905 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
906 struct mac80211_qos_map __rcu *qos_map;
908 struct work_struct csa_finalize_work;
909 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
910 struct cfg80211_chan_def csa_chandef;
912 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
913 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
915 /* context reservation -- protected with chanctx_mtx */
916 struct ieee80211_chanctx *reserved_chanctx;
917 struct cfg80211_chan_def reserved_chandef;
918 bool reserved_radar_required;
921 /* used to reconfigure hardware SM PS */
922 struct work_struct recalc_smps;
924 struct work_struct work;
925 struct sk_buff_head skb_queue;
928 enum ieee80211_smps_mode smps_mode;
930 int user_power_level; /* in dBm */
931 int ap_power_level; /* in dBm */
934 struct delayed_work dfs_cac_timer_work;
937 * AP this belongs to: self in AP mode and
938 * corresponding AP in VLAN mode, NULL for
939 * all others (might be needed later in IBSS)
941 struct ieee80211_if_ap *bss;
943 /* bitmap of allowed (non-MCS) rate indexes for rate control */
944 u32 rc_rateidx_mask[NUM_NL80211_BANDS];
946 bool rc_has_mcs_mask[NUM_NL80211_BANDS];
947 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];
949 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
950 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];
953 struct ieee80211_if_ap ap;
954 struct ieee80211_if_wds wds;
955 struct ieee80211_if_vlan vlan;
956 struct ieee80211_if_managed mgd;
957 struct ieee80211_if_ibss ibss;
958 struct ieee80211_if_mesh mesh;
959 struct ieee80211_if_ocb ocb;
960 struct ieee80211_if_mntr mntr;
961 struct ieee80211_if_nan nan;
964 #ifdef CONFIG_MAC80211_DEBUGFS
966 struct dentry *subdir_stations;
967 struct dentry *default_unicast_key;
968 struct dentry *default_multicast_key;
969 struct dentry *default_mgmt_key;
973 /* must be last, dynamically sized area in this! */
974 struct ieee80211_vif vif;
978 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
980 return container_of(p, struct ieee80211_sub_if_data, vif);
983 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
984 __acquires(&sdata->wdev.mtx)
986 mutex_lock(&sdata->wdev.mtx);
987 __acquire(&sdata->wdev.mtx);
990 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
991 __releases(&sdata->wdev.mtx)
993 mutex_unlock(&sdata->wdev.mtx);
994 __release(&sdata->wdev.mtx);
997 #define sdata_dereference(p, sdata) \
998 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
1001 sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
1003 lockdep_assert_held(&sdata->wdev.mtx);
1007 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
1009 switch (chandef->width) {
1010 case NL80211_CHAN_WIDTH_5:
1012 case NL80211_CHAN_WIDTH_10:
1020 ieee80211_vif_get_shift(struct ieee80211_vif *vif)
1022 struct ieee80211_chanctx_conf *chanctx_conf;
1026 chanctx_conf = rcu_dereference(vif->chanctx_conf);
1028 shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
1034 struct ieee80211_rx_agg {
1039 enum sdata_queue_type {
1040 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
1041 IEEE80211_SDATA_QUEUE_RX_AGG_START = 3,
1042 IEEE80211_SDATA_QUEUE_RX_AGG_STOP = 4,
1046 IEEE80211_RX_MSG = 1,
1047 IEEE80211_TX_STATUS_MSG = 2,
1050 enum queue_stop_reason {
1051 IEEE80211_QUEUE_STOP_REASON_DRIVER,
1052 IEEE80211_QUEUE_STOP_REASON_PS,
1053 IEEE80211_QUEUE_STOP_REASON_CSA,
1054 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
1055 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
1056 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
1057 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
1058 IEEE80211_QUEUE_STOP_REASON_FLUSH,
1059 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
1060 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
1062 IEEE80211_QUEUE_STOP_REASONS,
1065 #ifdef CONFIG_MAC80211_LEDS
1066 struct tpt_led_trigger {
1068 const struct ieee80211_tpt_blink *blink_table;
1069 unsigned int blink_table_len;
1070 struct timer_list timer;
1071 unsigned long prev_traffic;
1072 unsigned long tx_bytes, rx_bytes;
1073 unsigned int active, want;
1079 * mac80211 scan flags - currently active scan mode
1081 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
1082 * well be on the operating channel
1083 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
1084 * determine if we are on the operating channel or not
1085 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
1086 * channel. This should not interrupt normal traffic.
1087 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
1088 * that the scan completed.
1089 * @SCAN_ABORTED: Set for our scan work function when the driver reported
1090 * a scan complete for an aborted scan.
1091 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
1097 SCAN_ONCHANNEL_SCANNING,
1104 * enum mac80211_scan_state - scan state machine states
1106 * @SCAN_DECISION: Main entry point to the scan state machine, this state
1107 * determines if we should keep on scanning or switch back to the
1109 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
1110 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
1111 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
1113 * @SCAN_RESUME: Resume the scan and scan the next channel
1114 * @SCAN_ABORT: Abort the scan and go back to operating channel
1116 enum mac80211_scan_state {
1125 struct ieee80211_local {
1126 /* embed the driver visible part.
1127 * don't cast (use the static inlines below), but we keep
1128 * it first anyway so they become a no-op */
1129 struct ieee80211_hw hw;
1132 struct codel_vars *cvars;
1133 struct codel_params cparams;
1135 const struct ieee80211_ops *ops;
1138 * private workqueue to mac80211. mac80211 makes this accessible
1139 * via ieee80211_queue_work()
1141 struct workqueue_struct *workqueue;
1143 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
1144 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
1145 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
1146 spinlock_t queue_stop_reason_lock;
1149 int monitors, cooked_mntrs;
1150 /* number of interfaces with corresponding FIF_ flags */
1151 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
1154 unsigned int filter_flags; /* FIF_* */
1156 bool wiphy_ciphers_allocated;
1160 /* protects the aggregated multicast list and filter calls */
1161 spinlock_t filter_lock;
1163 /* used for uploading changed mc list */
1164 struct work_struct reconfig_filter;
1166 /* aggregated multicast list */
1167 struct netdev_hw_addr_list mc_list;
1169 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
1172 * suspended is true if we finished all the suspend _and_ we have
1173 * not yet come up from resume. This is to be used by mac80211
1174 * to ensure driver sanity during suspend and mac80211's own
1175 * sanity. It can eventually be used for WoW as well.
1180 * Resuming is true while suspended, but when we're reprogramming the
1181 * hardware -- at that time it's allowed to use ieee80211_queue_work()
1182 * again even though some other parts of the stack are still suspended
1183 * and we still drop received frames to avoid waking the stack.
1188 * quiescing is true during the suspend process _only_ to
1189 * ease timer cancelling etc.
1193 /* device is started */
1196 /* device is during a HW reconfig */
1199 /* wowlan is enabled -- don't reconfig on resume */
1202 struct work_struct radar_detected_work;
1204 /* number of RX chains the hardware has */
1207 int tx_headroom; /* required headroom for hardware/radiotap */
1209 /* Tasklet and skb queue to process calls from IRQ mode. All frames
1210 * added to skb_queue will be processed, but frames in
1211 * skb_queue_unreliable may be dropped if the total length of these
1212 * queues increases over the limit. */
1213 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
1214 struct tasklet_struct tasklet;
1215 struct sk_buff_head skb_queue;
1216 struct sk_buff_head skb_queue_unreliable;
1218 spinlock_t rx_path_lock;
1222 * The mutex only protects the list, hash table and
1223 * counter, reads are done with RCU.
1225 struct mutex sta_mtx;
1226 spinlock_t tim_lock;
1227 unsigned long num_sta;
1228 struct list_head sta_list;
1229 struct rhltable sta_hash;
1230 struct timer_list sta_cleanup;
1233 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
1234 struct tasklet_struct tx_pending_tasklet;
1236 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
1238 /* number of interfaces with allmulti RX */
1239 atomic_t iff_allmultis;
1241 struct rate_control_ref *rate_ctrl;
1243 struct crypto_cipher *wep_tx_tfm;
1244 struct crypto_cipher *wep_rx_tfm;
1248 struct list_head interfaces;
1249 struct list_head mon_list; /* only that are IFF_UP && !cooked */
1250 struct mutex iflist_mtx;
1253 * Key mutex, protects sdata's key_list and sta_info's
1254 * key pointers (write access, they're RCU.)
1256 struct mutex key_mtx;
1258 /* mutex for scan and work locking */
1261 /* Scanning and BSS list */
1262 unsigned long scanning;
1263 struct cfg80211_ssid scan_ssid;
1264 struct cfg80211_scan_request *int_scan_req;
1265 struct cfg80211_scan_request __rcu *scan_req;
1266 struct ieee80211_scan_request *hw_scan_req;
1267 struct cfg80211_chan_def scan_chandef;
1268 enum nl80211_band hw_scan_band;
1269 int scan_channel_idx;
1271 int hw_scan_ies_bufsize;
1272 struct cfg80211_scan_info scan_info;
1274 struct work_struct sched_scan_stopped_work;
1275 struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
1276 struct cfg80211_sched_scan_request __rcu *sched_scan_req;
1277 u8 scan_addr[ETH_ALEN];
1279 unsigned long leave_oper_channel_time;
1280 enum mac80211_scan_state next_scan_state;
1281 struct delayed_work scan_work;
1282 struct ieee80211_sub_if_data __rcu *scan_sdata;
1283 /* For backward compatibility only -- do not use */
1284 struct cfg80211_chan_def _oper_chandef;
1286 /* Temporary remain-on-channel for off-channel operations */
1287 struct ieee80211_channel *tmp_channel;
1289 /* channel contexts */
1290 struct list_head chanctx_list;
1291 struct mutex chanctx_mtx;
1293 #ifdef CONFIG_MAC80211_LEDS
1294 struct led_trigger tx_led, rx_led, assoc_led, radio_led;
1295 struct led_trigger tpt_led;
1296 atomic_t tx_led_active, rx_led_active, assoc_led_active;
1297 atomic_t radio_led_active, tpt_led_active;
1298 struct tpt_led_trigger *tpt_led_trigger;
1301 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
1303 /* dot11CountersTable */
1304 u32 dot11TransmittedFragmentCount;
1305 u32 dot11MulticastTransmittedFrameCount;
1306 u32 dot11FailedCount;
1307 u32 dot11RetryCount;
1308 u32 dot11MultipleRetryCount;
1309 u32 dot11FrameDuplicateCount;
1310 u32 dot11ReceivedFragmentCount;
1311 u32 dot11MulticastReceivedFrameCount;
1312 u32 dot11TransmittedFrameCount;
1314 /* TX/RX handler statistics */
1315 unsigned int tx_handlers_drop;
1316 unsigned int tx_handlers_queued;
1317 unsigned int tx_handlers_drop_wep;
1318 unsigned int tx_handlers_drop_not_assoc;
1319 unsigned int tx_handlers_drop_unauth_port;
1320 unsigned int rx_handlers_drop;
1321 unsigned int rx_handlers_queued;
1322 unsigned int rx_handlers_drop_nullfunc;
1323 unsigned int rx_handlers_drop_defrag;
1324 unsigned int tx_expand_skb_head;
1325 unsigned int tx_expand_skb_head_cloned;
1326 unsigned int rx_expand_skb_head_defrag;
1327 unsigned int rx_handlers_fragments;
1328 unsigned int tx_status_drop;
1329 #define I802_DEBUG_INC(c) (c)++
1330 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1331 #define I802_DEBUG_INC(c) do { } while (0)
1332 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1335 int total_ps_buffered; /* total number of all buffered unicast and
1336 * multicast packets for power saving stations
1340 bool offchannel_ps_enabled;
1342 * PS can only be enabled when we have exactly one managed
1343 * interface (and monitors) in PS, this then points there.
1345 struct ieee80211_sub_if_data *ps_sdata;
1346 struct work_struct dynamic_ps_enable_work;
1347 struct work_struct dynamic_ps_disable_work;
1348 struct timer_list dynamic_ps_timer;
1349 struct notifier_block ifa_notifier;
1350 struct notifier_block ifa6_notifier;
1353 * The dynamic ps timeout configured from user space via WEXT -
1354 * this will override whatever chosen by mac80211 internally.
1356 int dynamic_ps_forced_timeout;
1358 int user_power_level; /* in dBm, for all interfaces */
1360 enum ieee80211_smps_mode smps_mode;
1362 struct work_struct restart_work;
1364 #ifdef CONFIG_MAC80211_DEBUGFS
1365 struct local_debugfsdentries {
1366 struct dentry *rcdir;
1367 struct dentry *keys;
1372 * Remain-on-channel support
1374 struct delayed_work roc_work;
1375 struct list_head roc_list;
1376 struct work_struct hw_roc_start, hw_roc_done;
1377 unsigned long hw_roc_start_time;
1378 u64 roc_cookie_counter;
1380 struct idr ack_status_frames;
1381 spinlock_t ack_status_lock;
1383 struct ieee80211_sub_if_data __rcu *p2p_sdata;
1385 /* virtual monitor interface */
1386 struct ieee80211_sub_if_data __rcu *monitor_sdata;
1387 struct cfg80211_chan_def monitor_chandef;
1389 /* extended capabilities provided by mac80211 */
1392 /* TDLS channel switch */
1393 struct work_struct tdls_chsw_work;
1394 struct sk_buff_head skb_queue_tdls_chsw;
1397 static inline struct ieee80211_sub_if_data *
1398 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1400 return netdev_priv(dev);
1403 static inline struct ieee80211_sub_if_data *
1404 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
1406 return container_of(wdev, struct ieee80211_sub_if_data, wdev);
1409 static inline struct ieee80211_supported_band *
1410 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata)
1412 struct ieee80211_local *local = sdata->local;
1413 struct ieee80211_chanctx_conf *chanctx_conf;
1414 enum nl80211_band band;
1417 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1419 if (WARN_ON(!chanctx_conf)) {
1424 band = chanctx_conf->def.chan->band;
1427 return local->hw.wiphy->bands[band];
1430 /* this struct holds the value parsing from channel switch IE */
1431 struct ieee80211_csa_ie {
1432 struct cfg80211_chan_def chandef;
1440 /* Parsed Information Elements */
1441 struct ieee802_11_elems {
1445 /* pointers to IEs */
1446 const struct ieee80211_tdls_lnkie *lnk_id;
1447 const struct ieee80211_ch_switch_timing *ch_sw_timing;
1448 const u8 *ext_capab;
1450 const u8 *supp_rates;
1451 const u8 *ds_params;
1452 const struct ieee80211_tim_ie *tim;
1453 const u8 *challenge;
1456 const u8 *ext_supp_rates;
1458 const u8 *wmm_param;
1459 const struct ieee80211_ht_cap *ht_cap_elem;
1460 const struct ieee80211_ht_operation *ht_operation;
1461 const struct ieee80211_vht_cap *vht_cap_elem;
1462 const struct ieee80211_vht_operation *vht_operation;
1463 const struct ieee80211_meshconf_ie *mesh_config;
1466 const __le16 *awake_window;
1470 const struct ieee80211_rann_ie *rann;
1471 const struct ieee80211_channel_sw_ie *ch_switch_ie;
1472 const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
1473 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
1474 const u8 *country_elem;
1475 const u8 *pwr_constr_elem;
1476 const u8 *cisco_dtpc_elem;
1477 const struct ieee80211_timeout_interval_ie *timeout_int;
1478 const u8 *opmode_notif;
1479 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1480 const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
1481 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie;
1483 /* length of them, respectively */
1490 u8 ext_supp_rates_len;
1498 u8 country_elem_len;
1500 /* whether a parse error occurred while retrieving these elements */
1504 static inline struct ieee80211_local *hw_to_local(
1505 struct ieee80211_hw *hw)
1507 return container_of(hw, struct ieee80211_local, hw);
1510 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
1512 return container_of(txq, struct txq_info, txq);
1515 static inline bool txq_has_queue(struct ieee80211_txq *txq)
1517 struct txq_info *txqi = to_txq_info(txq);
1519 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets);
1522 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1524 return ether_addr_equal(raddr, addr) ||
1525 is_broadcast_ether_addr(raddr);
1529 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
1531 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
1532 status->flag & RX_FLAG_MACTIME_END);
1533 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END))
1535 /* can't handle non-legacy preamble yet */
1536 if (status->flag & RX_FLAG_MACTIME_PLCP_START &&
1537 status->encoding != RX_ENC_LEGACY)
1542 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata);
1543 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata);
1545 /* This function returns the number of multicast stations connected to this
1546 * interface. It returns -1 if that number is not tracked, that is for netdevs
1547 * not in AP or AP_VLAN mode or when using 4addr.
1550 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata)
1552 if (sdata->vif.type == NL80211_IFTYPE_AP)
1553 return atomic_read(&sdata->u.ap.num_mcast_sta);
1554 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta)
1555 return atomic_read(&sdata->u.vlan.num_mcast_sta);
1559 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
1560 struct ieee80211_rx_status *status,
1561 unsigned int mpdu_len,
1562 unsigned int mpdu_offset);
1563 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1564 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1565 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1567 void ieee80211_configure_filter(struct ieee80211_local *local);
1568 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1570 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
1571 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
1572 u64 *cookie, gfp_t gfp);
1574 void ieee80211_check_fast_rx(struct sta_info *sta);
1575 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1576 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
1577 void ieee80211_clear_fast_rx(struct sta_info *sta);
1580 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1581 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1582 struct cfg80211_auth_request *req);
1583 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1584 struct cfg80211_assoc_request *req);
1585 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1586 struct cfg80211_deauth_request *req);
1587 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1588 struct cfg80211_disassoc_request *req);
1589 void ieee80211_send_pspoll(struct ieee80211_local *local,
1590 struct ieee80211_sub_if_data *sdata);
1591 void ieee80211_recalc_ps(struct ieee80211_local *local);
1592 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
1593 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1594 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1595 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1596 struct sk_buff *skb);
1597 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1598 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1599 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
1600 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
1601 __le16 fc, bool acked);
1602 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
1603 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1604 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
1607 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1608 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1609 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1610 const u8 *bssid, const u8 *addr, u32 supp_rates);
1611 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1612 struct cfg80211_ibss_params *params);
1613 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1614 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1615 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1616 struct sk_buff *skb);
1617 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
1618 struct cfg80211_csa_settings *csa_settings);
1619 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
1620 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
1623 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
1624 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1625 const u8 *bssid, const u8 *addr, u32 supp_rates);
1626 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
1627 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
1628 struct ocb_setup *setup);
1629 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
1632 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1633 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1634 struct sk_buff *skb);
1635 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
1636 struct cfg80211_csa_settings *csa_settings);
1637 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
1639 /* scan/BSS handling */
1640 void ieee80211_scan_work(struct work_struct *work);
1641 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
1642 const u8 *ssid, u8 ssid_len,
1643 struct ieee80211_channel **channels,
1644 unsigned int n_channels,
1645 enum nl80211_bss_scan_width scan_width);
1646 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1647 struct cfg80211_scan_request *req);
1648 void ieee80211_scan_cancel(struct ieee80211_local *local);
1649 void ieee80211_run_deferred_scan(struct ieee80211_local *local);
1650 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
1652 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1653 struct ieee80211_bss *
1654 ieee80211_bss_info_update(struct ieee80211_local *local,
1655 struct ieee80211_rx_status *rx_status,
1656 struct ieee80211_mgmt *mgmt,
1658 struct ieee802_11_elems *elems,
1659 struct ieee80211_channel *channel);
1660 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1661 struct ieee80211_bss *bss);
1663 /* scheduled scan handling */
1665 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1666 struct cfg80211_sched_scan_request *req);
1667 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1668 struct cfg80211_sched_scan_request *req);
1669 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local);
1670 void ieee80211_sched_scan_end(struct ieee80211_local *local);
1671 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1673 /* off-channel/mgmt-tx */
1674 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
1675 void ieee80211_offchannel_return(struct ieee80211_local *local);
1676 void ieee80211_roc_setup(struct ieee80211_local *local);
1677 void ieee80211_start_next_roc(struct ieee80211_local *local);
1678 void ieee80211_roc_purge(struct ieee80211_local *local,
1679 struct ieee80211_sub_if_data *sdata);
1680 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
1681 struct ieee80211_channel *chan,
1682 unsigned int duration, u64 *cookie);
1683 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1684 struct wireless_dev *wdev, u64 cookie);
1685 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
1686 struct cfg80211_mgmt_tx_params *params, u64 *cookie);
1687 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1688 struct wireless_dev *wdev, u64 cookie);
1690 /* channel switch handling */
1691 void ieee80211_csa_finalize_work(struct work_struct *work);
1692 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
1693 struct cfg80211_csa_settings *params);
1695 /* interface handling */
1696 int ieee80211_iface_init(void);
1697 void ieee80211_iface_exit(void);
1698 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1699 unsigned char name_assign_type,
1700 struct wireless_dev **new_wdev, enum nl80211_iftype type,
1701 struct vif_params *params);
1702 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1703 enum nl80211_iftype type);
1704 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1705 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1706 u32 ieee80211_idle_off(struct ieee80211_local *local);
1707 void ieee80211_recalc_idle(struct ieee80211_local *local);
1708 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1710 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
1711 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
1712 int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
1713 void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
1715 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
1716 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
1719 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1721 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1725 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1726 void ieee80211_tx_pending(unsigned long data);
1727 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1728 struct net_device *dev);
1729 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1730 struct net_device *dev);
1731 void __ieee80211_subif_start_xmit(struct sk_buff *skb,
1732 struct net_device *dev,
1734 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1735 struct sk_buff_head *skbs);
1737 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
1738 struct sk_buff *skb, u32 info_flags);
1739 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
1740 struct ieee80211_supported_band *sband,
1741 int retry_count, int shift, bool send_to_cooked);
1743 void ieee80211_check_fast_xmit(struct sta_info *sta);
1744 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local);
1745 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata);
1746 void ieee80211_clear_fast_xmit(struct sta_info *sta);
1749 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1750 struct ieee80211_sta_ht_cap *ht_cap);
1751 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1752 struct ieee80211_supported_band *sband,
1753 const struct ieee80211_ht_cap *ht_cap_ie,
1754 struct sta_info *sta);
1755 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1756 const u8 *da, u16 tid,
1757 u16 initiator, u16 reason_code);
1758 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1759 enum ieee80211_smps_mode smps, const u8 *da,
1761 void ieee80211_request_smps_ap_work(struct work_struct *work);
1762 void ieee80211_request_smps_mgd_work(struct work_struct *work);
1763 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
1764 enum ieee80211_smps_mode smps_mode_new);
1766 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1767 u16 initiator, u16 reason, bool stop);
1768 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1769 u16 initiator, u16 reason, bool stop);
1770 void __ieee80211_start_rx_ba_session(struct sta_info *sta,
1771 u8 dialog_token, u16 timeout,
1772 u16 start_seq_num, u16 ba_policy, u16 tid,
1773 u16 buf_size, bool tx, bool auto_seq);
1774 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
1775 enum ieee80211_agg_stop_reason reason);
1776 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1777 struct sta_info *sta,
1778 struct ieee80211_mgmt *mgmt, size_t len);
1779 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1780 struct sta_info *sta,
1781 struct ieee80211_mgmt *mgmt,
1783 void ieee80211_process_addba_request(struct ieee80211_local *local,
1784 struct sta_info *sta,
1785 struct ieee80211_mgmt *mgmt,
1788 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1789 enum ieee80211_agg_stop_reason reason);
1790 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1791 enum ieee80211_agg_stop_reason reason);
1792 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid,
1793 struct tid_ampdu_tx *tid_tx);
1794 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid,
1795 struct tid_ampdu_tx *tid_tx);
1796 void ieee80211_ba_session_work(struct work_struct *work);
1797 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1798 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1800 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
1804 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
1805 struct ieee80211_supported_band *sband,
1806 const struct ieee80211_vht_cap *vht_cap_ie,
1807 struct sta_info *sta);
1808 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
1809 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
1810 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1811 enum ieee80211_sta_rx_bandwidth
1812 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width);
1813 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta);
1814 void ieee80211_sta_set_rx_nss(struct sta_info *sta);
1815 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata,
1816 struct ieee80211_mgmt *mgmt);
1817 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1818 struct sta_info *sta, u8 opmode,
1819 enum nl80211_band band);
1820 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
1821 struct sta_info *sta, u8 opmode,
1822 enum nl80211_band band);
1823 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
1824 struct ieee80211_sta_vht_cap *vht_cap);
1825 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap,
1826 u16 vht_mask[NL80211_VHT_NSS_MAX]);
1828 /* Spectrum management */
1829 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1830 struct ieee80211_mgmt *mgmt,
1833 * ieee80211_parse_ch_switch_ie - parses channel switch IEs
1834 * @sdata: the sdata of the interface which has received the frame
1835 * @elems: parsed 802.11 elements received with the frame
1836 * @current_band: indicates the current band
1837 * @sta_flags: contains information about own capabilities and restrictions
1838 * to decide which channel switch announcements can be accepted. Only the
1839 * following subset of &enum ieee80211_sta_flags are evaluated:
1840 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
1841 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
1842 * %IEEE80211_STA_DISABLE_160MHZ.
1843 * @bssid: the currently connected bssid (for reporting)
1844 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
1845 All of them will be filled with if success only.
1846 * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
1848 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
1849 struct ieee802_11_elems *elems,
1850 enum nl80211_band current_band,
1851 u32 sta_flags, u8 *bssid,
1852 struct ieee80211_csa_ie *csa_ie);
1854 /* Suspend/resume and hw reconfiguration */
1855 int ieee80211_reconfig(struct ieee80211_local *local);
1856 void ieee80211_stop_device(struct ieee80211_local *local);
1858 int __ieee80211_suspend(struct ieee80211_hw *hw,
1859 struct cfg80211_wowlan *wowlan);
1861 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1863 struct ieee80211_local *local = hw_to_local(hw);
1865 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
1866 !test_bit(SCAN_COMPLETED, &local->scanning),
1867 "%s: resume with hardware scan still in progress\n",
1868 wiphy_name(hw->wiphy));
1870 return ieee80211_reconfig(hw_to_local(hw));
1873 /* utility functions/constants */
1874 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
1875 int ieee80211_frame_duration(enum nl80211_band band, size_t len,
1876 int rate, int erp, int short_preamble,
1878 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
1879 bool bss_notify, bool enable_qos);
1880 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
1881 struct sta_info *sta, struct sk_buff *skb);
1883 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1884 struct sk_buff *skb, int tid,
1885 enum nl80211_band band);
1888 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
1889 struct sk_buff *skb, int tid,
1890 enum nl80211_band band)
1893 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
1897 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1898 struct sk_buff *skb, int tid)
1900 struct ieee80211_chanctx_conf *chanctx_conf;
1903 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1904 if (WARN_ON(!chanctx_conf)) {
1910 __ieee80211_tx_skb_tid_band(sdata, skb, tid,
1911 chanctx_conf->def.chan->band);
1915 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1916 struct sk_buff *skb)
1918 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1919 ieee80211_tx_skb_tid(sdata, skb, 7);
1922 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
1923 struct ieee802_11_elems *elems,
1924 u64 filter, u32 crc);
1925 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
1927 struct ieee802_11_elems *elems)
1929 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
1933 extern const int ieee802_1d_to_ac[8];
1935 static inline int ieee80211_ac_from_tid(int tid)
1937 return ieee802_1d_to_ac[tid & 7];
1940 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1941 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1942 void ieee80211_dynamic_ps_timer(unsigned long data);
1943 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1944 struct ieee80211_sub_if_data *sdata,
1946 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1947 struct ieee80211_hdr *hdr);
1948 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1949 struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
1951 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1952 unsigned long queues,
1953 enum queue_stop_reason reason,
1955 void ieee80211_stop_vif_queues(struct ieee80211_local *local,
1956 struct ieee80211_sub_if_data *sdata,
1957 enum queue_stop_reason reason);
1958 void ieee80211_wake_vif_queues(struct ieee80211_local *local,
1959 struct ieee80211_sub_if_data *sdata,
1960 enum queue_stop_reason reason);
1961 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1962 unsigned long queues,
1963 enum queue_stop_reason reason,
1965 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1966 enum queue_stop_reason reason,
1968 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1969 enum queue_stop_reason reason,
1971 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
1972 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1973 struct sk_buff *skb);
1974 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1975 struct sk_buff_head *skbs);
1976 void ieee80211_flush_queues(struct ieee80211_local *local,
1977 struct ieee80211_sub_if_data *sdata, bool drop);
1978 void __ieee80211_flush_queues(struct ieee80211_local *local,
1979 struct ieee80211_sub_if_data *sdata,
1980 unsigned int queues, bool drop);
1982 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
1985 * If quiescing is set, we are racing with __ieee80211_suspend.
1986 * __ieee80211_suspend flushes the workers after setting quiescing,
1987 * and we check quiescing / suspended before enqueing new workers.
1988 * We should abort the worker to avoid the races below.
1990 if (local->quiescing)
1994 * We might already be suspended if the following scenario occurs:
1995 * __ieee80211_suspend Control path
1997 * if (local->quiescing)
1999 * local->quiescing = true;
2000 * flush_workqueue();
2002 * local->suspended = true;
2003 * local->quiescing = false;
2004 * worker starts running...
2006 if (local->suspended)
2012 int ieee80211_txq_setup_flows(struct ieee80211_local *local);
2013 void ieee80211_txq_teardown_flows(struct ieee80211_local *local);
2014 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
2015 struct sta_info *sta,
2016 struct txq_info *txq, int tid);
2017 void ieee80211_txq_purge(struct ieee80211_local *local,
2018 struct txq_info *txqi);
2019 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
2020 u16 transaction, u16 auth_alg, u16 status,
2021 const u8 *extra, size_t extra_len, const u8 *bssid,
2022 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
2024 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
2025 const u8 *bssid, u16 stype, u16 reason,
2026 bool send_frame, u8 *frame_buf);
2027 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
2029 struct ieee80211_scan_ies *ie_desc,
2030 const u8 *ie, size_t ie_len,
2031 u8 bands_used, u32 *rate_masks,
2032 struct cfg80211_chan_def *chandef);
2033 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
2034 const u8 *src, const u8 *dst,
2036 struct ieee80211_channel *chan,
2037 const u8 *ssid, size_t ssid_len,
2038 const u8 *ie, size_t ie_len,
2040 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
2041 const u8 *src, const u8 *dst,
2042 const u8 *ssid, size_t ssid_len,
2043 const u8 *ie, size_t ie_len,
2044 u32 ratemask, bool directed, u32 tx_flags,
2045 struct ieee80211_channel *channel, bool scan);
2047 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
2048 struct ieee802_11_elems *elems,
2049 enum nl80211_band band, u32 *basic_rates);
2050 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2051 enum ieee80211_smps_mode smps_mode);
2052 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2053 enum ieee80211_smps_mode smps_mode);
2054 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
2055 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
2057 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
2058 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2060 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
2061 const struct cfg80211_chan_def *chandef,
2062 u16 prot_mode, bool rifs_mode);
2063 void ieee80211_ie_build_wide_bw_cs(u8 *pos,
2064 const struct cfg80211_chan_def *chandef);
2065 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2067 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
2068 const struct cfg80211_chan_def *chandef);
2069 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
2070 const struct ieee80211_supported_band *sband,
2071 const u8 *srates, int srates_len, u32 *rates);
2072 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
2073 struct sk_buff *skb, bool need_basic,
2074 enum nl80211_band band);
2075 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
2076 struct sk_buff *skb, bool need_basic,
2077 enum nl80211_band band);
2078 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
2080 /* channel management */
2081 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
2082 struct cfg80211_chan_def *chandef);
2083 bool ieee80211_chandef_vht_oper(const struct ieee80211_vht_operation *oper,
2084 struct cfg80211_chan_def *chandef);
2085 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
2088 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
2089 const struct cfg80211_chan_def *chandef,
2090 enum ieee80211_chanctx_mode mode);
2092 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
2093 const struct cfg80211_chan_def *chandef,
2094 enum ieee80211_chanctx_mode mode,
2095 bool radar_required);
2097 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
2098 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
2101 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
2102 const struct cfg80211_chan_def *chandef,
2104 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
2105 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
2106 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
2108 int ieee80211_chanctx_refcount(struct ieee80211_local *local,
2109 struct ieee80211_chanctx *ctx);
2111 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
2112 struct ieee80211_chanctx *chanctx);
2113 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
2114 struct ieee80211_chanctx *ctx);
2115 bool ieee80211_is_radar_required(struct ieee80211_local *local);
2117 void ieee80211_dfs_cac_timer(unsigned long data);
2118 void ieee80211_dfs_cac_timer_work(struct work_struct *work);
2119 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
2120 void ieee80211_dfs_radar_detected_work(struct work_struct *work);
2121 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
2122 struct cfg80211_csa_settings *csa_settings);
2124 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
2125 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
2126 const struct ieee80211_cipher_scheme *
2127 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
2128 enum nl80211_iftype iftype);
2129 int ieee80211_cs_headroom(struct ieee80211_local *local,
2130 struct cfg80211_crypto_settings *crypto,
2131 enum nl80211_iftype iftype);
2132 void ieee80211_recalc_dtim(struct ieee80211_local *local,
2133 struct ieee80211_sub_if_data *sdata);
2134 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
2135 const struct cfg80211_chan_def *chandef,
2136 enum ieee80211_chanctx_mode chanmode,
2138 int ieee80211_max_num_channels(struct ieee80211_local *local);
2139 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta);
2140 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local,
2141 struct ieee80211_chanctx *ctx);
2144 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2145 const u8 *peer, u8 action_code, u8 dialog_token,
2146 u16 status_code, u32 peer_capability,
2147 bool initiator, const u8 *extra_ies,
2148 size_t extra_ies_len);
2149 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2150 const u8 *peer, enum nl80211_tdls_operation oper);
2151 void ieee80211_tdls_peer_del_work(struct work_struct *wk);
2152 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2153 const u8 *addr, u8 oper_class,
2154 struct cfg80211_chan_def *chandef);
2155 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
2156 struct net_device *dev,
2158 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata);
2159 void ieee80211_tdls_chsw_work(struct work_struct *wk);
2161 extern const struct ethtool_ops ieee80211_ethtool_ops;
2163 #ifdef CONFIG_MAC80211_NOINLINE
2164 #define debug_noinline noinline
2166 #define debug_noinline
2169 #endif /* IEEE80211_I_H */