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>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
15 #include <linux/kernel.h>
16 #include <linux/device.h>
17 #include <linux/if_ether.h>
18 #include <linux/interrupt.h>
19 #include <linux/list.h>
20 #include <linux/netdevice.h>
21 #include <linux/skbuff.h>
22 #include <linux/workqueue.h>
23 #include <linux/types.h>
24 #include <linux/spinlock.h>
25 #include <linux/etherdevice.h>
26 #include <linux/leds.h>
27 #include <linux/idr.h>
28 #include <net/ieee80211_radiotap.h>
29 #include <net/cfg80211.h>
30 #include <net/mac80211.h>
34 struct ieee80211_local;
36 /* Maximum number of broadcast/multicast frames to buffer when some of the
37 * associated stations are using power saving. */
38 #define AP_MAX_BC_BUFFER 128
40 /* Maximum number of frames buffered to all STAs, including multicast frames.
41 * Note: increasing this limit increases the potential memory requirement. Each
42 * frame can be up to about 2 kB long. */
43 #define TOTAL_MAX_TX_BUFFER 512
45 /* Required encryption head and tailroom */
46 #define IEEE80211_ENCRYPT_HEADROOM 8
47 #define IEEE80211_ENCRYPT_TAILROOM 18
49 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
50 * reception of at least three fragmented frames. This limit can be increased
51 * by changing this define, at the cost of slower frame reassembly and
52 * increased memory use (about 2 kB of RAM per entry). */
53 #define IEEE80211_FRAGMENT_MAX 4
55 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
57 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
58 (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \
59 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \
60 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \
61 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
63 #define IEEE80211_DEFAULT_MAX_SP_LEN \
64 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
66 struct ieee80211_fragment_entry {
67 unsigned long first_frag_time;
69 unsigned int rx_queue;
70 unsigned int last_frag;
71 unsigned int extra_len;
72 struct sk_buff_head skb_list;
73 int ccmp; /* Whether fragments were encrypted with CCMP */
74 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
78 struct ieee80211_bss {
79 /* don't want to look up all the time */
81 u8 ssid[IEEE80211_MAX_SSID_LEN];
88 unsigned long last_probe_resp;
90 #ifdef CONFIG_MAC80211_MESH
96 #define IEEE80211_MAX_SUPP_RATES 32
97 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
98 size_t supp_rates_len;
101 * During association, we save an ERP value from a probe response so
102 * that we can feed ERP info to the driver when handling the
103 * association completes. these fields probably won't be up-to-date
104 * otherwise, you probably don't want to use them.
110 static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
112 #ifdef CONFIG_MAC80211_MESH
113 return bss->mesh_cfg;
118 static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
120 #ifdef CONFIG_MAC80211_MESH
126 static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
128 #ifdef CONFIG_MAC80211_MESH
129 return bss->mesh_id_len;
135 typedef unsigned __bitwise__ ieee80211_tx_result;
136 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
137 #define TX_DROP ((__force ieee80211_tx_result) 1u)
138 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
140 #define IEEE80211_TX_UNICAST BIT(1)
141 #define IEEE80211_TX_PS_BUFFERED BIT(2)
143 struct ieee80211_tx_data {
145 struct sk_buff_head skbs;
146 struct ieee80211_local *local;
147 struct ieee80211_sub_if_data *sdata;
148 struct sta_info *sta;
149 struct ieee80211_key *key;
151 struct ieee80211_channel *channel;
157 typedef unsigned __bitwise__ ieee80211_rx_result;
158 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
159 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
160 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
161 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
164 * enum ieee80211_packet_rx_flags - packet RX flags
165 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
166 * (incl. multicast frames)
167 * @IEEE80211_RX_IN_SCAN: received while scanning
168 * @IEEE80211_RX_FRAGMENTED: fragmented frame
169 * @IEEE80211_RX_AMSDU: a-MSDU packet
170 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
171 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
173 * These are per-frame flags that are attached to a frame in the
174 * @rx_flags field of &struct ieee80211_rx_status.
176 enum ieee80211_packet_rx_flags {
177 IEEE80211_RX_IN_SCAN = BIT(0),
178 IEEE80211_RX_RA_MATCH = BIT(1),
179 IEEE80211_RX_FRAGMENTED = BIT(2),
180 IEEE80211_RX_AMSDU = BIT(3),
181 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
182 IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
186 * enum ieee80211_rx_flags - RX data flags
188 * @IEEE80211_RX_CMNTR: received on cooked monitor already
189 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
190 * to cfg80211_report_obss_beacon().
192 * These flags are used across handling multiple interfaces
193 * for a single frame.
195 enum ieee80211_rx_flags {
196 IEEE80211_RX_CMNTR = BIT(0),
197 IEEE80211_RX_BEACON_REPORTED = BIT(1),
200 struct ieee80211_rx_data {
202 struct ieee80211_local *local;
203 struct ieee80211_sub_if_data *sdata;
204 struct sta_info *sta;
205 struct ieee80211_key *key;
210 * Index into sequence numbers array, 0..16
211 * since the last (16) is used for non-QoS,
212 * will be 16 on non-QoS frames.
217 * Index into the security IV/PN arrays, 0..16
218 * since the last (16) is used for CCMP-encrypted
219 * management frames, will be set to 16 on mgmt
220 * frames and 0 on non-QoS frames.
230 int head_len, tail_len;
231 struct rcu_head rcu_head;
234 struct ieee80211_if_ap {
235 struct beacon_data __rcu *beacon;
236 struct sk_buff __rcu *probe_resp;
238 struct list_head vlans;
240 /* yes, this looks ugly, but guarantees that we can later use
242 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
243 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
244 struct sk_buff_head ps_bc_buf;
245 atomic_t num_sta_ps; /* number of stations in PS mode */
246 atomic_t num_sta_authorized; /* number of authorized stations */
251 struct ieee80211_if_wds {
252 struct sta_info *sta;
253 u8 remote_addr[ETH_ALEN];
256 struct ieee80211_if_vlan {
257 struct list_head list;
259 /* used for all tx if the VLAN is configured to 4-addr mode */
260 struct sta_info __rcu *sta;
264 __u32 fwded_mcast; /* Mesh forwarded multicast frames */
265 __u32 fwded_unicast; /* Mesh forwarded unicast frames */
266 __u32 fwded_frames; /* Mesh total forwarded frames */
267 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
268 __u32 dropped_frames_no_route; /* Not transmitted, no route found */
269 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
270 atomic_t estab_plinks;
273 #define PREQ_Q_F_START 0x1
274 #define PREQ_Q_F_REFRESH 0x2
275 struct mesh_preq_queue {
276 struct list_head list;
281 enum ieee80211_work_type {
282 IEEE80211_WORK_ABORT,
283 IEEE80211_WORK_REMAIN_ON_CHANNEL,
284 IEEE80211_WORK_OFFCHANNEL_TX,
288 * enum work_done_result - indicates what to do after work was done
290 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
291 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
292 * should be requeued.
294 enum work_done_result {
299 struct ieee80211_work {
300 struct list_head list;
302 struct rcu_head rcu_head;
304 struct ieee80211_sub_if_data *sdata;
306 enum work_done_result (*done)(struct ieee80211_work *wk,
307 struct sk_buff *skb);
309 struct ieee80211_channel *chan;
310 enum nl80211_channel_type chan_type;
312 unsigned long timeout;
313 enum ieee80211_work_type type;
322 struct sk_buff *frame;
332 /* flags used in struct ieee80211_if_managed.flags */
333 enum ieee80211_sta_flags {
334 IEEE80211_STA_BEACON_POLL = BIT(0),
335 IEEE80211_STA_CONNECTION_POLL = BIT(1),
336 IEEE80211_STA_CONTROL_PORT = BIT(2),
337 IEEE80211_STA_DISABLE_11N = BIT(4),
338 IEEE80211_STA_CSA_RECEIVED = BIT(5),
339 IEEE80211_STA_MFP_ENABLED = BIT(6),
340 IEEE80211_STA_UAPSD_ENABLED = BIT(7),
341 IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
342 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
345 struct ieee80211_mgd_auth_data {
346 struct cfg80211_bss *bss;
347 unsigned long timeout;
349 u16 algorithm, expected_transaction;
351 u8 key[WLAN_KEY_LEN_WEP104];
360 struct ieee80211_mgd_assoc_data {
361 struct cfg80211_bss *bss;
362 const u8 *supp_rates;
363 const u8 *ht_information_ie;
365 unsigned long timeout;
369 u8 prev_bssid[ETH_ALEN];
370 u8 ssid[IEEE80211_MAX_SSID_LEN];
373 bool wmm_used, uapsd_used;
382 struct ieee80211_if_managed {
383 struct timer_list timer;
384 struct timer_list conn_mon_timer;
385 struct timer_list bcn_mon_timer;
386 struct timer_list chswitch_timer;
387 struct work_struct monitor_work;
388 struct work_struct chswitch_work;
389 struct work_struct beacon_connection_loss_work;
391 unsigned long beacon_timeout;
392 unsigned long probe_timeout;
393 int probe_send_count;
394 bool nullfunc_failed;
397 struct cfg80211_bss *associated;
398 struct ieee80211_mgd_auth_data *auth_data;
399 struct ieee80211_mgd_assoc_data *assoc_data;
405 unsigned long timers_running; /* used for quiesce/restart */
406 bool powersave; /* powersave requested for this iface */
407 bool broken_ap; /* AP is broken -- turn off powersave */
408 enum ieee80211_smps_mode req_smps, /* requested smps mode */
409 ap_smps, /* smps mode AP thinks we're in */
410 driver_smps_mode; /* smps mode request */
412 struct work_struct request_smps_work;
416 bool beacon_crc_valid;
420 IEEE80211_MFP_DISABLED,
421 IEEE80211_MFP_OPTIONAL,
422 IEEE80211_MFP_REQUIRED
423 } mfp; /* management frame protection */
425 int wmm_last_param_set;
429 /* Signal strength from the last Beacon frame in the current BSS. */
430 int last_beacon_signal;
433 * Weighted average of the signal strength from Beacon frames in the
434 * current BSS. This is in units of 1/16 of the signal unit to maintain
435 * accuracy and to speed up calculations, i.e., the value need to be
436 * divided by 16 to get the actual value.
438 int ave_beacon_signal;
441 * Number of Beacon frames used in ave_beacon_signal. This can be used
442 * to avoid generating less reliable cqm events that would be based
443 * only on couple of received frames.
445 unsigned int count_beacon_signal;
448 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
449 * that triggered a cqm event. 0 indicates that no event has been
450 * generated for the current association.
452 int last_cqm_event_signal;
455 * State variables for keeping track of RSSI of the AP currently
456 * connected to and informing driver when RSSI has gone
457 * below/above a certain threshold.
459 int rssi_min_thold, rssi_max_thold;
460 int last_ave_beacon_signal;
462 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
463 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
466 struct ieee80211_if_ibss {
467 struct timer_list timer;
471 unsigned long last_scan_completed;
484 u8 ssid[IEEE80211_MAX_SSID_LEN];
487 struct ieee80211_channel *channel;
488 enum nl80211_channel_type channel_type;
490 unsigned long ibss_join_req;
491 /* probe response/beacon for IBSS */
492 struct sk_buff __rcu *presp;
495 spinlock_t incomplete_lock;
496 struct list_head incomplete_stations;
499 IEEE80211_IBSS_MLME_SEARCH,
500 IEEE80211_IBSS_MLME_JOINED,
504 struct ieee80211_if_mesh {
505 struct timer_list housekeeping_timer;
506 struct timer_list mesh_path_timer;
507 struct timer_list mesh_path_root_timer;
509 unsigned long timers_running;
511 unsigned long wrkq_flags;
513 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
515 /* Active Path Selection Protocol Identifier */
517 /* Active Path Selection Metric Identifier */
519 /* Congestion Control Mode Identifier */
521 /* Synchronization Protocol Identifier */
523 /* Authentication Protocol Identifier */
525 /* Local mesh Sequence Number */
527 /* Last used PREQ ID */
530 /* Timestamp of last SN update */
531 unsigned long last_sn_update;
532 /* Time when it's ok to send next PERR */
533 unsigned long next_perr;
534 /* Timestamp of last PREQ sent */
535 unsigned long last_preq;
536 struct mesh_rmc *rmc;
537 spinlock_t mesh_preq_queue_lock;
538 struct mesh_preq_queue preq_queue;
540 struct mesh_stats mshstats;
541 struct mesh_config mshcfg;
543 bool accepting_plinks;
548 IEEE80211_MESH_SEC_NONE = 0x0,
549 IEEE80211_MESH_SEC_AUTHED = 0x1,
550 IEEE80211_MESH_SEC_SECURED = 0x2,
554 #ifdef CONFIG_MAC80211_MESH
555 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
556 do { (msh)->mshstats.name++; } while (0)
558 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
563 * enum ieee80211_sub_if_data_flags - virtual interface flags
565 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
566 * @IEEE80211_SDATA_PROMISC: interface is promisc
567 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
568 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
569 * associated stations and deliver multicast frames both
570 * back to wireless media and to the local net stack.
571 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
572 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
574 enum ieee80211_sub_if_data_flags {
575 IEEE80211_SDATA_ALLMULTI = BIT(0),
576 IEEE80211_SDATA_PROMISC = BIT(1),
577 IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
578 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
579 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
580 IEEE80211_SDATA_IN_DRIVER = BIT(5),
584 * enum ieee80211_sdata_state_bits - virtual interface state bits
585 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
586 * mirrors netif_running() but is separate for interface type
587 * change handling while the interface is up
588 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
589 * mode, so queues are stopped
591 enum ieee80211_sdata_state_bits {
593 SDATA_STATE_OFFCHANNEL,
596 struct ieee80211_sub_if_data {
597 struct list_head list;
599 struct wireless_dev wdev;
602 struct list_head key_list;
604 /* count for keys needing tailroom space allocation */
605 int crypto_tx_tailroom_needed_cnt;
607 struct net_device *dev;
608 struct ieee80211_local *local;
614 int drop_unencrypted;
619 * keep track of whether the HT opmode (stored in
620 * vif.bss_info.ht_operation_mode) is valid.
622 bool ht_opmode_valid;
624 /* to detect idle changes */
627 /* Fragment table for host-based reassembly */
628 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
629 unsigned int fragment_next;
631 /* TID bitmap for NoAck policy */
634 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
635 struct ieee80211_key __rcu *default_unicast_key;
636 struct ieee80211_key __rcu *default_multicast_key;
637 struct ieee80211_key __rcu *default_mgmt_key;
640 __be16 control_port_protocol;
641 bool control_port_no_encrypt;
643 struct ieee80211_tx_queue_params tx_conf[IEEE80211_MAX_QUEUES];
645 struct work_struct work;
646 struct sk_buff_head skb_queue;
648 bool arp_filter_state;
651 * AP this belongs to: self in AP mode and
652 * corresponding AP in VLAN mode, NULL for
653 * all others (might be needed later in IBSS)
655 struct ieee80211_if_ap *bss;
657 /* bitmap of allowed (non-MCS) rate indexes for rate control */
658 u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
659 u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
662 struct ieee80211_if_ap ap;
663 struct ieee80211_if_wds wds;
664 struct ieee80211_if_vlan vlan;
665 struct ieee80211_if_managed mgd;
666 struct ieee80211_if_ibss ibss;
667 struct ieee80211_if_mesh mesh;
671 #ifdef CONFIG_MAC80211_DEBUGFS
674 struct dentry *subdir_stations;
675 struct dentry *default_unicast_key;
676 struct dentry *default_multicast_key;
677 struct dentry *default_mgmt_key;
680 /* must be last, dynamically sized area in this! */
681 struct ieee80211_vif vif;
685 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
687 return container_of(p, struct ieee80211_sub_if_data, vif);
690 enum sdata_queue_type {
691 IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
692 IEEE80211_SDATA_QUEUE_AGG_START = 1,
693 IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
697 IEEE80211_RX_MSG = 1,
698 IEEE80211_TX_STATUS_MSG = 2,
699 IEEE80211_EOSP_MSG = 3,
702 struct skb_eosp_msg_data {
703 u8 sta[ETH_ALEN], iface[ETH_ALEN];
706 enum queue_stop_reason {
707 IEEE80211_QUEUE_STOP_REASON_DRIVER,
708 IEEE80211_QUEUE_STOP_REASON_PS,
709 IEEE80211_QUEUE_STOP_REASON_CSA,
710 IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
711 IEEE80211_QUEUE_STOP_REASON_SUSPEND,
712 IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
713 IEEE80211_QUEUE_STOP_REASON_CHTYPE_CHANGE,
716 #ifdef CONFIG_MAC80211_LEDS
717 struct tpt_led_trigger {
718 struct led_trigger trig;
720 const struct ieee80211_tpt_blink *blink_table;
721 unsigned int blink_table_len;
722 struct timer_list timer;
723 unsigned long prev_traffic;
724 unsigned long tx_bytes, rx_bytes;
725 unsigned int active, want;
731 * mac80211 scan flags - currently active scan mode
733 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
734 * well be on the operating channel
735 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
736 * determine if we are on the operating channel or not
737 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
738 * that the scan completed.
739 * @SCAN_ABORTED: Set for our scan work function when the driver reported
740 * a scan complete for an aborted scan.
750 * enum mac80211_scan_state - scan state machine states
752 * @SCAN_DECISION: Main entry point to the scan state machine, this state
753 * determines if we should keep on scanning or switch back to the
755 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
756 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
757 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
759 * @SCAN_RESUME: Resume the scan and scan the next channel
761 enum mac80211_scan_state {
769 struct ieee80211_local {
770 /* embed the driver visible part.
771 * don't cast (use the static inlines below), but we keep
772 * it first anyway so they become a no-op */
773 struct ieee80211_hw hw;
775 const struct ieee80211_ops *ops;
778 * work stuff, potentially off-channel (in the future)
780 struct list_head work_list;
781 struct timer_list work_timer;
782 struct work_struct work_work;
785 * private workqueue to mac80211. mac80211 makes this accessible
786 * via ieee80211_queue_work()
788 struct workqueue_struct *workqueue;
790 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
791 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
792 spinlock_t queue_stop_reason_lock;
795 int monitors, cooked_mntrs;
796 /* number of interfaces with corresponding FIF_ flags */
797 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
800 unsigned int filter_flags; /* FIF_* */
802 bool wiphy_ciphers_allocated;
804 /* protects the aggregated multicast list and filter calls */
805 spinlock_t filter_lock;
807 /* used for uploading changed mc list */
808 struct work_struct reconfig_filter;
810 /* used to reconfigure hardware SM PS */
811 struct work_struct recalc_smps;
813 /* aggregated multicast list */
814 struct netdev_hw_addr_list mc_list;
816 bool tim_in_locked_section; /* see ieee80211_beacon_get() */
819 * suspended is true if we finished all the suspend _and_ we have
820 * not yet come up from resume. This is to be used by mac80211
821 * to ensure driver sanity during suspend and mac80211's own
822 * sanity. It can eventually be used for WoW as well.
827 * Resuming is true while suspended, but when we're reprogramming the
828 * hardware -- at that time it's allowed to use ieee80211_queue_work()
829 * again even though some other parts of the stack are still suspended
830 * and we still drop received frames to avoid waking the stack.
835 * quiescing is true during the suspend process _only_ to
836 * ease timer cancelling etc.
840 /* device is started */
843 /* wowlan is enabled -- don't reconfig on resume */
846 int tx_headroom; /* required headroom for hardware/radiotap */
848 /* Tasklet and skb queue to process calls from IRQ mode. All frames
849 * added to skb_queue will be processed, but frames in
850 * skb_queue_unreliable may be dropped if the total length of these
851 * queues increases over the limit. */
852 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
853 struct tasklet_struct tasklet;
854 struct sk_buff_head skb_queue;
855 struct sk_buff_head skb_queue_unreliable;
858 * Internal FIFO queue which is shared between multiple rx path
859 * stages. Its main task is to provide a serialization mechanism,
860 * so all rx handlers can enjoy having exclusive access to their
861 * private data structures.
863 struct sk_buff_head rx_skb_queue;
864 bool running_rx_handler; /* protected by rx_skb_queue.lock */
868 * The mutex only protects the list, hash table and
869 * counter, reads are done with RCU.
871 struct mutex sta_mtx;
873 unsigned long num_sta;
874 struct list_head sta_list;
875 struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
876 struct timer_list sta_cleanup;
879 struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
880 struct tasklet_struct tx_pending_tasklet;
882 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
884 /* number of interfaces with corresponding IFF_ flags */
885 atomic_t iff_allmultis, iff_promiscs;
887 struct rate_control_ref *rate_ctrl;
889 struct crypto_cipher *wep_tx_tfm;
890 struct crypto_cipher *wep_rx_tfm;
894 struct list_head interfaces;
895 struct mutex iflist_mtx;
898 * Key mutex, protects sdata's key_list and sta_info's
899 * key pointers (write access, they're RCU.)
901 struct mutex key_mtx;
903 /* mutex for scan and work locking */
906 /* Scanning and BSS list */
907 unsigned long scanning;
908 struct cfg80211_ssid scan_ssid;
909 struct cfg80211_scan_request *int_scan_req;
910 struct cfg80211_scan_request *scan_req, *hw_scan_req;
911 struct ieee80211_channel *scan_channel;
912 enum ieee80211_band hw_scan_band;
913 int scan_channel_idx;
917 struct ieee80211_sched_scan_ies sched_scan_ies;
918 struct work_struct sched_scan_stopped_work;
920 unsigned long leave_oper_channel_time;
921 enum mac80211_scan_state next_scan_state;
922 struct delayed_work scan_work;
923 struct ieee80211_sub_if_data *scan_sdata;
924 enum nl80211_channel_type _oper_channel_type;
925 struct ieee80211_channel *oper_channel, *csa_channel;
927 /* Temporary remain-on-channel for off-channel operations */
928 struct ieee80211_channel *tmp_channel;
929 enum nl80211_channel_type tmp_channel_type;
932 /* dot11CountersTable */
933 u32 dot11TransmittedFragmentCount;
934 u32 dot11MulticastTransmittedFrameCount;
935 u32 dot11FailedCount;
937 u32 dot11MultipleRetryCount;
938 u32 dot11FrameDuplicateCount;
939 u32 dot11ReceivedFragmentCount;
940 u32 dot11MulticastReceivedFrameCount;
941 u32 dot11TransmittedFrameCount;
943 #ifdef CONFIG_MAC80211_LEDS
944 int tx_led_counter, rx_led_counter;
945 struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
946 struct tpt_led_trigger *tpt_led_trigger;
947 char tx_led_name[32], rx_led_name[32],
948 assoc_led_name[32], radio_led_name[32];
951 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
952 /* TX/RX handler statistics */
953 unsigned int tx_handlers_drop;
954 unsigned int tx_handlers_queued;
955 unsigned int tx_handlers_drop_unencrypted;
956 unsigned int tx_handlers_drop_fragment;
957 unsigned int tx_handlers_drop_wep;
958 unsigned int tx_handlers_drop_not_assoc;
959 unsigned int tx_handlers_drop_unauth_port;
960 unsigned int rx_handlers_drop;
961 unsigned int rx_handlers_queued;
962 unsigned int rx_handlers_drop_nullfunc;
963 unsigned int rx_handlers_drop_defrag;
964 unsigned int rx_handlers_drop_short;
965 unsigned int rx_handlers_drop_passive_scan;
966 unsigned int tx_expand_skb_head;
967 unsigned int tx_expand_skb_head_cloned;
968 unsigned int rx_expand_skb_head;
969 unsigned int rx_expand_skb_head2;
970 unsigned int rx_handlers_fragments;
971 unsigned int tx_status_drop;
972 #define I802_DEBUG_INC(c) (c)++
973 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
974 #define I802_DEBUG_INC(c) do { } while (0)
975 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
978 int total_ps_buffered; /* total number of all buffered unicast and
979 * multicast packets for power saving stations
981 unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
984 * Bitmask of enabled u-apsd queues,
985 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
988 unsigned int uapsd_queues;
991 * Maximum number of buffered frames AP can deliver during a
992 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
993 * Needs a new association to take effect.
995 unsigned int uapsd_max_sp_len;
998 bool offchannel_ps_enabled;
1000 * PS can only be enabled when we have exactly one managed
1001 * interface (and monitors) in PS, this then points there.
1003 struct ieee80211_sub_if_data *ps_sdata;
1004 struct work_struct dynamic_ps_enable_work;
1005 struct work_struct dynamic_ps_disable_work;
1006 struct timer_list dynamic_ps_timer;
1007 struct notifier_block network_latency_notifier;
1008 struct notifier_block ifa_notifier;
1011 * The dynamic ps timeout configured from user space via WEXT -
1012 * this will override whatever chosen by mac80211 internally.
1014 int dynamic_ps_forced_timeout;
1015 int dynamic_ps_user_timeout;
1016 bool disable_dynamic_ps;
1018 int user_power_level; /* in dBm */
1019 int power_constr_level; /* in dBm */
1021 enum ieee80211_smps_mode smps_mode;
1023 struct work_struct restart_work;
1025 #ifdef CONFIG_MAC80211_DEBUGFS
1026 struct local_debugfsdentries {
1027 struct dentry *rcdir;
1028 struct dentry *keys;
1032 struct ieee80211_channel *hw_roc_channel;
1033 struct net_device *hw_roc_dev;
1034 struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status;
1035 struct work_struct hw_roc_start, hw_roc_done;
1036 enum nl80211_channel_type hw_roc_channel_type;
1037 unsigned int hw_roc_duration;
1041 struct idr ack_status_frames;
1042 spinlock_t ack_status_lock;
1044 /* dummy netdev for use w/ NAPI */
1045 struct net_device napi_dev;
1047 struct napi_struct napi;
1050 static inline struct ieee80211_sub_if_data *
1051 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
1053 return netdev_priv(dev);
1056 /* this struct represents 802.11n's RA/TID combination */
1057 struct ieee80211_ra_tid {
1062 /* Parsed Information Elements */
1063 struct ieee802_11_elems {
1067 /* pointers to IEs */
1073 struct ieee80211_tim_ie *tim;
1082 struct ieee80211_ht_cap *ht_cap_elem;
1083 struct ieee80211_ht_info *ht_info_elem;
1084 struct ieee80211_meshconf_ie *mesh_config;
1090 struct ieee80211_rann_ie *rann;
1093 u8 *pwr_constr_elem;
1094 u8 *quiet_elem; /* first quite element */
1097 /* length of them, respectively */
1109 u8 ext_supp_rates_len;
1117 u8 ch_switch_elem_len;
1118 u8 country_elem_len;
1119 u8 pwr_constr_elem_len;
1121 u8 num_of_quiet_elem; /* can be more the one */
1125 static inline struct ieee80211_local *hw_to_local(
1126 struct ieee80211_hw *hw)
1128 return container_of(hw, struct ieee80211_local, hw);
1131 static inline struct ieee80211_hw *local_to_hw(
1132 struct ieee80211_local *local)
1138 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
1140 return compare_ether_addr(raddr, addr) == 0 ||
1141 is_broadcast_ether_addr(raddr);
1145 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1146 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
1147 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
1149 void ieee80211_configure_filter(struct ieee80211_local *local);
1150 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1153 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1154 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
1155 struct cfg80211_auth_request *req);
1156 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
1157 struct cfg80211_assoc_request *req);
1158 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
1159 struct cfg80211_deauth_request *req,
1161 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
1162 struct cfg80211_disassoc_request *req,
1164 void ieee80211_send_pspoll(struct ieee80211_local *local,
1165 struct ieee80211_sub_if_data *sdata);
1166 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
1167 int ieee80211_max_network_latency(struct notifier_block *nb,
1168 unsigned long data, void *dummy);
1169 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1170 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
1171 struct ieee80211_channel_sw_ie *sw_elem,
1172 struct ieee80211_bss *bss,
1174 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
1175 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1176 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
1177 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1178 struct sk_buff *skb);
1179 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1180 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
1183 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
1184 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
1185 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
1186 const u8 *bssid, const u8 *addr, u32 supp_rates);
1187 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
1188 struct cfg80211_ibss_params *params);
1189 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
1190 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
1191 void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1192 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
1193 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1194 struct sk_buff *skb);
1197 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
1198 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1199 struct sk_buff *skb);
1201 /* scan/BSS handling */
1202 void ieee80211_scan_work(struct work_struct *work);
1203 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
1204 const u8 *ssid, u8 ssid_len,
1205 struct ieee80211_channel *chan);
1206 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1207 struct cfg80211_scan_request *req);
1208 void ieee80211_scan_cancel(struct ieee80211_local *local);
1210 ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1212 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1213 struct ieee80211_bss *
1214 ieee80211_bss_info_update(struct ieee80211_local *local,
1215 struct ieee80211_rx_status *rx_status,
1216 struct ieee80211_mgmt *mgmt,
1218 struct ieee802_11_elems *elems,
1219 struct ieee80211_channel *channel,
1221 struct ieee80211_bss *
1222 ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
1223 u8 *ssid, u8 ssid_len);
1224 void ieee80211_rx_bss_put(struct ieee80211_local *local,
1225 struct ieee80211_bss *bss);
1227 /* scheduled scan handling */
1228 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
1229 struct cfg80211_sched_scan_request *req);
1230 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
1231 void ieee80211_sched_scan_stopped_work(struct work_struct *work);
1233 /* off-channel helpers */
1234 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
1235 bool offchannel_ps_enable);
1236 void ieee80211_offchannel_return(struct ieee80211_local *local,
1237 bool offchannel_ps_disable);
1238 void ieee80211_hw_roc_setup(struct ieee80211_local *local);
1240 /* interface handling */
1241 int ieee80211_iface_init(void);
1242 void ieee80211_iface_exit(void);
1243 int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1244 struct net_device **new_dev, enum nl80211_iftype type,
1245 struct vif_params *params);
1246 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1247 enum nl80211_iftype type);
1248 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1249 void ieee80211_remove_interfaces(struct ieee80211_local *local);
1250 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
1251 void ieee80211_recalc_idle(struct ieee80211_local *local);
1252 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
1255 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
1257 return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1261 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
1262 void ieee80211_tx_pending(unsigned long data);
1263 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
1264 struct net_device *dev);
1265 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
1266 struct net_device *dev);
1269 bool ieee80111_cfg_override_disables_ht40(struct ieee80211_sub_if_data *sdata);
1270 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
1271 struct ieee80211_sta_ht_cap *ht_cap);
1272 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
1273 struct ieee80211_supported_band *sband,
1274 struct ieee80211_ht_cap *ht_cap_ie,
1275 struct ieee80211_sta_ht_cap *ht_cap);
1276 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
1277 const u8 *da, u16 tid,
1278 u16 initiator, u16 reason_code);
1279 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
1280 enum ieee80211_smps_mode smps, const u8 *da,
1282 void ieee80211_request_smps_work(struct work_struct *work);
1284 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1285 u16 initiator, u16 reason, bool stop);
1286 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
1287 u16 initiator, u16 reason, bool stop);
1288 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
1289 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
1290 struct sta_info *sta,
1291 struct ieee80211_mgmt *mgmt, size_t len);
1292 void ieee80211_process_addba_resp(struct ieee80211_local *local,
1293 struct sta_info *sta,
1294 struct ieee80211_mgmt *mgmt,
1296 void ieee80211_process_addba_request(struct ieee80211_local *local,
1297 struct sta_info *sta,
1298 struct ieee80211_mgmt *mgmt,
1301 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1302 enum ieee80211_back_parties initiator,
1304 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
1305 enum ieee80211_back_parties initiator,
1307 void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
1308 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
1309 void ieee80211_ba_session_work(struct work_struct *work);
1310 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1311 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
1313 /* Spectrum management */
1314 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
1315 struct ieee80211_mgmt *mgmt,
1318 /* Suspend/resume and hw reconfiguration */
1319 int ieee80211_reconfig(struct ieee80211_local *local);
1320 void ieee80211_stop_device(struct ieee80211_local *local);
1323 int __ieee80211_suspend(struct ieee80211_hw *hw,
1324 struct cfg80211_wowlan *wowlan);
1326 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1328 struct ieee80211_local *local = hw_to_local(hw);
1330 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
1331 "%s: resume with hardware scan still in progress\n",
1332 wiphy_name(hw->wiphy));
1334 return ieee80211_reconfig(hw_to_local(hw));
1337 static inline int __ieee80211_suspend(struct ieee80211_hw *hw,
1338 struct cfg80211_wowlan *wowlan)
1343 static inline int __ieee80211_resume(struct ieee80211_hw *hw)
1349 /* utility functions/constants */
1350 extern void *mac80211_wiphy_privid; /* for wiphy privid */
1351 u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1352 enum nl80211_iftype type);
1353 int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
1354 int rate, int erp, int short_preamble);
1355 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1356 struct ieee80211_hdr *hdr, const u8 *tsc,
1358 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1359 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
1361 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
1362 struct sk_buff *skb, int tid);
1363 static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
1364 struct sk_buff *skb)
1366 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1367 ieee80211_tx_skb_tid(sdata, skb, 7);
1370 void ieee802_11_parse_elems(u8 *start, size_t len,
1371 struct ieee802_11_elems *elems);
1372 u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
1373 struct ieee802_11_elems *elems,
1374 u64 filter, u32 crc);
1375 u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1376 enum ieee80211_band band);
1378 void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
1379 void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
1380 void ieee80211_dynamic_ps_timer(unsigned long data);
1381 void ieee80211_send_nullfunc(struct ieee80211_local *local,
1382 struct ieee80211_sub_if_data *sdata,
1384 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1385 struct ieee80211_hdr *hdr);
1386 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1387 struct ieee80211_hdr *hdr, bool ack);
1388 void ieee80211_beacon_connection_loss_work(struct work_struct *work);
1390 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
1391 enum queue_stop_reason reason);
1392 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
1393 enum queue_stop_reason reason);
1394 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
1395 enum queue_stop_reason reason);
1396 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
1397 enum queue_stop_reason reason);
1398 void ieee80211_add_pending_skb(struct ieee80211_local *local,
1399 struct sk_buff *skb);
1400 void ieee80211_add_pending_skbs(struct ieee80211_local *local,
1401 struct sk_buff_head *skbs);
1402 void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
1403 struct sk_buff_head *skbs,
1404 void (*fn)(void *data), void *data);
1406 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
1407 u16 transaction, u16 auth_alg,
1408 u8 *extra, size_t extra_len, const u8 *bssid,
1409 const u8 *da, const u8 *key, u8 key_len, u8 key_idx);
1410 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1411 const u8 *ie, size_t ie_len,
1412 enum ieee80211_band band, u32 rate_mask,
1414 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
1415 u8 *dst, u32 ratemask,
1416 const u8 *ssid, size_t ssid_len,
1417 const u8 *ie, size_t ie_len,
1419 void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1420 const u8 *ssid, size_t ssid_len,
1421 const u8 *ie, size_t ie_len,
1422 u32 ratemask, bool directed, bool no_cck);
1424 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
1425 const size_t supp_rates_len,
1426 const u8 *supp_rates);
1427 u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
1428 struct ieee802_11_elems *elems,
1429 enum ieee80211_band band);
1430 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1431 enum ieee80211_smps_mode smps_mode);
1432 void ieee80211_recalc_smps(struct ieee80211_local *local);
1434 size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
1435 const u8 *ids, int n_ids, size_t offset);
1436 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
1437 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
1439 u8 *ieee80211_ie_build_ht_info(u8 *pos,
1440 struct ieee80211_sta_ht_cap *ht_cap,
1441 struct ieee80211_channel *channel,
1442 enum nl80211_channel_type channel_type);
1444 /* internal work items */
1445 void ieee80211_work_init(struct ieee80211_local *local);
1446 void ieee80211_add_work(struct ieee80211_work *wk);
1447 void free_work(struct ieee80211_work *wk);
1448 void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
1449 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
1450 struct ieee80211_channel *chan,
1451 enum nl80211_channel_type channel_type,
1452 unsigned int duration, u64 *cookie);
1453 int ieee80211_wk_cancel_remain_on_channel(
1454 struct ieee80211_sub_if_data *sdata, u64 cookie);
1456 /* channel management */
1457 enum ieee80211_chan_mode {
1458 CHAN_MODE_UNDEFINED,
1463 enum ieee80211_chan_mode
1464 ieee80211_get_channel_mode(struct ieee80211_local *local,
1465 struct ieee80211_sub_if_data *ignore);
1466 bool ieee80211_set_channel_type(struct ieee80211_local *local,
1467 struct ieee80211_sub_if_data *sdata,
1468 enum nl80211_channel_type chantype);
1469 enum nl80211_channel_type
1470 ieee80211_ht_info_to_channel_type(struct ieee80211_ht_info *ht_info);
1472 #ifdef CONFIG_MAC80211_NOINLINE
1473 #define debug_noinline noinline
1475 #define debug_noinline
1478 #endif /* IEEE80211_I_H */