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 <net/ieee80211_radiotap.h>
27 #include <net/cfg80211.h>
28 #include <net/mac80211.h>
32 struct ieee80211_local
;
34 /* Maximum number of broadcast/multicast frames to buffer when some of the
35 * associated stations are using power saving. */
36 #define AP_MAX_BC_BUFFER 128
38 /* Maximum number of frames buffered to all STAs, including multicast frames.
39 * Note: increasing this limit increases the potential memory requirement. Each
40 * frame can be up to about 2 kB long. */
41 #define TOTAL_MAX_TX_BUFFER 512
43 /* Required encryption head and tailroom */
44 #define IEEE80211_ENCRYPT_HEADROOM 8
45 #define IEEE80211_ENCRYPT_TAILROOM 18
47 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
48 * reception of at least three fragmented frames. This limit can be increased
49 * by changing this define, at the cost of slower frame reassembly and
50 * increased memory use (about 2 kB of RAM per entry). */
51 #define IEEE80211_FRAGMENT_MAX 4
53 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
55 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
56 (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \
57 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \
58 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \
59 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
61 #define IEEE80211_DEFAULT_MAX_SP_LEN \
62 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
64 struct ieee80211_fragment_entry
{
65 unsigned long first_frag_time
;
67 unsigned int rx_queue
;
68 unsigned int last_frag
;
69 unsigned int extra_len
;
70 struct sk_buff_head skb_list
;
71 int ccmp
; /* Whether fragments were encrypted with CCMP */
72 u8 last_pn
[6]; /* PN of the last fragment if CCMP was used */
76 struct ieee80211_bss
{
77 /* don't want to look up all the time */
79 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
86 unsigned long last_probe_resp
;
88 #ifdef CONFIG_MAC80211_MESH
94 #define IEEE80211_MAX_SUPP_RATES 32
95 u8 supp_rates
[IEEE80211_MAX_SUPP_RATES
];
96 size_t supp_rates_len
;
99 * During assocation, we save an ERP value from a probe response so
100 * that we can feed ERP info to the driver when handling the
101 * association completes. these fields probably won't be up-to-date
102 * otherwise, you probably don't want to use them.
108 static inline u8
*bss_mesh_cfg(struct ieee80211_bss
*bss
)
110 #ifdef CONFIG_MAC80211_MESH
111 return bss
->mesh_cfg
;
116 static inline u8
*bss_mesh_id(struct ieee80211_bss
*bss
)
118 #ifdef CONFIG_MAC80211_MESH
124 static inline u8
bss_mesh_id_len(struct ieee80211_bss
*bss
)
126 #ifdef CONFIG_MAC80211_MESH
127 return bss
->mesh_id_len
;
133 typedef unsigned __bitwise__ ieee80211_tx_result
;
134 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
135 #define TX_DROP ((__force ieee80211_tx_result) 1u)
136 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
138 #define IEEE80211_TX_FRAGMENTED BIT(0)
139 #define IEEE80211_TX_UNICAST BIT(1)
140 #define IEEE80211_TX_PS_BUFFERED BIT(2)
142 struct ieee80211_tx_data
{
144 struct ieee80211_local
*local
;
145 struct ieee80211_sub_if_data
*sdata
;
146 struct sta_info
*sta
;
147 struct ieee80211_key
*key
;
149 struct ieee80211_channel
*channel
;
156 typedef unsigned __bitwise__ ieee80211_rx_result
;
157 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
158 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
159 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
160 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
163 * enum ieee80211_packet_rx_flags - packet RX flags
164 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
165 * (incl. multicast frames)
166 * @IEEE80211_RX_IN_SCAN: received while scanning
167 * @IEEE80211_RX_FRAGMENTED: fragmented frame
168 * @IEEE80211_RX_AMSDU: a-MSDU packet
169 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
170 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
172 * These are per-frame flags that are attached to a frame in the
173 * @rx_flags field of &struct ieee80211_rx_status.
175 enum ieee80211_packet_rx_flags
{
176 IEEE80211_RX_IN_SCAN
= BIT(0),
177 IEEE80211_RX_RA_MATCH
= BIT(1),
178 IEEE80211_RX_FRAGMENTED
= BIT(2),
179 IEEE80211_RX_AMSDU
= BIT(3),
180 IEEE80211_RX_MALFORMED_ACTION_FRM
= BIT(4),
181 IEEE80211_RX_DEFERRED_RELEASE
= BIT(5),
185 * enum ieee80211_rx_flags - RX data flags
187 * @IEEE80211_RX_CMNTR: received on cooked monitor already
189 * These flags are used across handling multiple interfaces
190 * for a single frame.
192 enum ieee80211_rx_flags
{
193 IEEE80211_RX_CMNTR
= BIT(0),
196 struct ieee80211_rx_data
{
198 struct ieee80211_local
*local
;
199 struct ieee80211_sub_if_data
*sdata
;
200 struct sta_info
*sta
;
201 struct ieee80211_key
*key
;
211 int head_len
, tail_len
;
215 struct ieee80211_if_ap
{
216 struct beacon_data
*beacon
;
218 struct list_head vlans
;
220 /* yes, this looks ugly, but guarantees that we can later use
222 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
223 u8 tim
[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID
+ 1)];
224 struct sk_buff_head ps_bc_buf
;
225 atomic_t num_sta_ps
; /* number of stations in PS mode */
229 struct ieee80211_if_wds
{
230 struct sta_info
*sta
;
231 u8 remote_addr
[ETH_ALEN
];
234 struct ieee80211_if_vlan
{
235 struct list_head list
;
237 /* used for all tx if the VLAN is configured to 4-addr mode */
238 struct sta_info
*sta
;
242 __u32 fwded_mcast
; /* Mesh forwarded multicast frames */
243 __u32 fwded_unicast
; /* Mesh forwarded unicast frames */
244 __u32 fwded_frames
; /* Mesh total forwarded frames */
245 __u32 dropped_frames_ttl
; /* Not transmitted since mesh_ttl == 0*/
246 __u32 dropped_frames_no_route
; /* Not transmitted, no route found */
247 atomic_t estab_plinks
;
250 #define PREQ_Q_F_START 0x1
251 #define PREQ_Q_F_REFRESH 0x2
252 struct mesh_preq_queue
{
253 struct list_head list
;
258 enum ieee80211_work_type
{
259 IEEE80211_WORK_ABORT
,
260 IEEE80211_WORK_DIRECT_PROBE
,
262 IEEE80211_WORK_ASSOC_BEACON_WAIT
,
263 IEEE80211_WORK_ASSOC
,
264 IEEE80211_WORK_REMAIN_ON_CHANNEL
,
265 IEEE80211_WORK_OFFCHANNEL_TX
,
269 * enum work_done_result - indicates what to do after work was done
271 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
272 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
273 * should be requeued.
275 enum work_done_result
{
280 struct ieee80211_work
{
281 struct list_head list
;
283 struct rcu_head rcu_head
;
285 struct ieee80211_sub_if_data
*sdata
;
287 enum work_done_result (*done
)(struct ieee80211_work
*wk
,
288 struct sk_buff
*skb
);
290 struct ieee80211_channel
*chan
;
291 enum nl80211_channel_type chan_type
;
293 unsigned long timeout
;
294 enum ieee80211_work_type type
;
296 u8 filter_ta
[ETH_ALEN
];
303 u16 algorithm
, transaction
;
304 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
306 u8 key
[WLAN_KEY_LEN_WEP104
];
311 struct cfg80211_bss
*bss
;
312 const u8
*supp_rates
;
313 const u8
*ht_information_ie
;
314 enum ieee80211_smps_mode smps
;
317 u8 prev_bssid
[ETH_ALEN
];
318 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
321 bool wmm_used
, use_11n
, uapsd_used
;
327 struct sk_buff
*frame
;
337 /* flags used in struct ieee80211_if_managed.flags */
338 enum ieee80211_sta_flags
{
339 IEEE80211_STA_BEACON_POLL
= BIT(0),
340 IEEE80211_STA_CONNECTION_POLL
= BIT(1),
341 IEEE80211_STA_CONTROL_PORT
= BIT(2),
342 IEEE80211_STA_DISABLE_11N
= BIT(4),
343 IEEE80211_STA_CSA_RECEIVED
= BIT(5),
344 IEEE80211_STA_MFP_ENABLED
= BIT(6),
345 IEEE80211_STA_UAPSD_ENABLED
= BIT(7),
346 IEEE80211_STA_NULLFUNC_ACKED
= BIT(8),
347 IEEE80211_STA_RESET_SIGNAL_AVE
= BIT(9),
350 struct ieee80211_if_managed
{
351 struct timer_list timer
;
352 struct timer_list conn_mon_timer
;
353 struct timer_list bcn_mon_timer
;
354 struct timer_list chswitch_timer
;
355 struct work_struct monitor_work
;
356 struct work_struct chswitch_work
;
357 struct work_struct beacon_connection_loss_work
;
359 unsigned long beacon_timeout
;
360 unsigned long probe_timeout
;
361 int probe_send_count
;
362 bool nullfunc_failed
;
365 struct cfg80211_bss
*associated
;
371 unsigned long timers_running
; /* used for quiesce/restart */
372 bool powersave
; /* powersave requested for this iface */
373 enum ieee80211_smps_mode req_smps
, /* requested smps mode */
374 ap_smps
, /* smps mode AP thinks we're in */
375 driver_smps_mode
; /* smps mode request */
377 struct work_struct request_smps_work
;
381 bool beacon_crc_valid
;
385 IEEE80211_MFP_DISABLED
,
386 IEEE80211_MFP_OPTIONAL
,
387 IEEE80211_MFP_REQUIRED
388 } mfp
; /* management frame protection */
390 int wmm_last_param_set
;
394 /* Signal strength from the last Beacon frame in the current BSS. */
395 int last_beacon_signal
;
398 * Weighted average of the signal strength from Beacon frames in the
399 * current BSS. This is in units of 1/16 of the signal unit to maintain
400 * accuracy and to speed up calculations, i.e., the value need to be
401 * divided by 16 to get the actual value.
403 int ave_beacon_signal
;
406 * Number of Beacon frames used in ave_beacon_signal. This can be used
407 * to avoid generating less reliable cqm events that would be based
408 * only on couple of received frames.
410 unsigned int count_beacon_signal
;
413 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
414 * that triggered a cqm event. 0 indicates that no event has been
415 * generated for the current association.
417 int last_cqm_event_signal
;
420 struct ieee80211_if_ibss
{
421 struct timer_list timer
;
425 unsigned long last_scan_completed
;
436 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
439 struct ieee80211_channel
*channel
;
441 unsigned long ibss_join_req
;
442 /* probe response/beacon for IBSS */
443 struct sk_buff
*presp
, *skb
;
446 IEEE80211_IBSS_MLME_SEARCH
,
447 IEEE80211_IBSS_MLME_JOINED
,
451 struct ieee80211_if_mesh
{
452 struct timer_list housekeeping_timer
;
453 struct timer_list mesh_path_timer
;
454 struct timer_list mesh_path_root_timer
;
456 unsigned long timers_running
;
458 unsigned long wrkq_flags
;
460 u8 mesh_id
[IEEE80211_MAX_MESH_ID_LEN
];
462 /* Active Path Selection Protocol Identifier */
464 /* Active Path Selection Metric Identifier */
466 /* Congestion Control Mode Identifier */
468 /* Synchronization Protocol Identifier */
470 /* Authentication Protocol Identifier */
472 /* Local mesh Sequence Number */
474 /* Last used PREQ ID */
477 /* Timestamp of last SN update */
478 unsigned long last_sn_update
;
479 /* Timestamp of last SN sent */
480 unsigned long last_preq
;
481 struct mesh_rmc
*rmc
;
482 spinlock_t mesh_preq_queue_lock
;
483 struct mesh_preq_queue preq_queue
;
485 struct mesh_stats mshstats
;
486 struct mesh_config mshcfg
;
488 bool accepting_plinks
;
493 #ifdef CONFIG_MAC80211_MESH
494 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
495 do { (msh)->mshstats.name++; } while (0)
497 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
502 * enum ieee80211_sub_if_data_flags - virtual interface flags
504 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
505 * @IEEE80211_SDATA_PROMISC: interface is promisc
506 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
507 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
508 * associated stations and deliver multicast frames both
509 * back to wireless media and to the local net stack.
511 enum ieee80211_sub_if_data_flags
{
512 IEEE80211_SDATA_ALLMULTI
= BIT(0),
513 IEEE80211_SDATA_PROMISC
= BIT(1),
514 IEEE80211_SDATA_OPERATING_GMODE
= BIT(2),
515 IEEE80211_SDATA_DONT_BRIDGE_PACKETS
= BIT(3),
519 * enum ieee80211_sdata_state_bits - virtual interface state bits
520 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
521 * mirrors netif_running() but is separate for interface type
522 * change handling while the interface is up
523 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
524 * mode, so queues are stopped
526 enum ieee80211_sdata_state_bits
{
528 SDATA_STATE_OFFCHANNEL
,
531 struct ieee80211_sub_if_data
{
532 struct list_head list
;
534 struct wireless_dev wdev
;
537 struct list_head key_list
;
539 struct net_device
*dev
;
540 struct ieee80211_local
*local
;
546 int drop_unencrypted
;
551 * keep track of whether the HT opmode (stored in
552 * vif.bss_info.ht_operation_mode) is valid.
554 bool ht_opmode_valid
;
556 /* to detect idle changes */
559 /* Fragment table for host-based reassembly */
560 struct ieee80211_fragment_entry fragments
[IEEE80211_FRAGMENT_MAX
];
561 unsigned int fragment_next
;
563 struct ieee80211_key
*keys
[NUM_DEFAULT_KEYS
+ NUM_DEFAULT_MGMT_KEYS
];
564 struct ieee80211_key
*default_unicast_key
, *default_multicast_key
;
565 struct ieee80211_key
*default_mgmt_key
;
568 __be16 control_port_protocol
;
569 bool control_port_no_encrypt
;
571 struct work_struct work
;
572 struct sk_buff_head skb_queue
;
574 bool arp_filter_state
;
577 * AP this belongs to: self in AP mode and
578 * corresponding AP in VLAN mode, NULL for
579 * all others (might be needed later in IBSS)
581 struct ieee80211_if_ap
*bss
;
583 /* bitmap of allowed (non-MCS) rate indexes for rate control */
584 u32 rc_rateidx_mask
[IEEE80211_NUM_BANDS
];
587 struct ieee80211_if_ap ap
;
588 struct ieee80211_if_wds wds
;
589 struct ieee80211_if_vlan vlan
;
590 struct ieee80211_if_managed mgd
;
591 struct ieee80211_if_ibss ibss
;
592 struct ieee80211_if_mesh mesh
;
596 #ifdef CONFIG_MAC80211_DEBUGFS
599 struct dentry
*subdir_stations
;
600 struct dentry
*default_unicast_key
;
601 struct dentry
*default_multicast_key
;
602 struct dentry
*default_mgmt_key
;
605 /* must be last, dynamically sized area in this! */
606 struct ieee80211_vif vif
;
610 struct ieee80211_sub_if_data
*vif_to_sdata(struct ieee80211_vif
*p
)
612 return container_of(p
, struct ieee80211_sub_if_data
, vif
);
615 enum sdata_queue_type
{
616 IEEE80211_SDATA_QUEUE_TYPE_FRAME
= 0,
617 IEEE80211_SDATA_QUEUE_AGG_START
= 1,
618 IEEE80211_SDATA_QUEUE_AGG_STOP
= 2,
622 IEEE80211_RX_MSG
= 1,
623 IEEE80211_TX_STATUS_MSG
= 2,
626 enum queue_stop_reason
{
627 IEEE80211_QUEUE_STOP_REASON_DRIVER
,
628 IEEE80211_QUEUE_STOP_REASON_PS
,
629 IEEE80211_QUEUE_STOP_REASON_CSA
,
630 IEEE80211_QUEUE_STOP_REASON_AGGREGATION
,
631 IEEE80211_QUEUE_STOP_REASON_SUSPEND
,
632 IEEE80211_QUEUE_STOP_REASON_SKB_ADD
,
636 * mac80211 scan flags - currently active scan mode
638 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
639 * well be on the operating channel
640 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
641 * determine if we are on the operating channel or not
642 * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
643 * gets only set in conjunction with SCAN_SW_SCANNING
644 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
645 * that the scan completed.
646 * @SCAN_ABORTED: Set for our scan work function when the driver reported
647 * a scan complete for an aborted scan.
658 * enum mac80211_scan_state - scan state machine states
660 * @SCAN_DECISION: Main entry point to the scan state machine, this state
661 * determines if we should keep on scanning or switch back to the
663 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
664 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
665 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
666 * about us leaving the channel and stop all associated STA interfaces
667 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
668 * AP about us being back and restart all associated STA interfaces
670 enum mac80211_scan_state
{
674 SCAN_LEAVE_OPER_CHANNEL
,
675 SCAN_ENTER_OPER_CHANNEL
,
678 struct ieee80211_local
{
679 /* embed the driver visible part.
680 * don't cast (use the static inlines below), but we keep
681 * it first anyway so they become a no-op */
682 struct ieee80211_hw hw
;
684 const struct ieee80211_ops
*ops
;
687 * work stuff, potentially off-channel (in the future)
689 struct list_head work_list
;
690 struct timer_list work_timer
;
691 struct work_struct work_work
;
692 struct sk_buff_head work_skb_queue
;
695 * private workqueue to mac80211. mac80211 makes this accessible
696 * via ieee80211_queue_work()
698 struct workqueue_struct
*workqueue
;
700 unsigned long queue_stop_reasons
[IEEE80211_MAX_QUEUES
];
701 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
702 spinlock_t queue_stop_reason_lock
;
705 int monitors
, cooked_mntrs
;
706 /* number of interfaces with corresponding FIF_ flags */
707 int fif_fcsfail
, fif_plcpfail
, fif_control
, fif_other_bss
, fif_pspoll
,
710 unsigned int filter_flags
; /* FIF_* */
712 bool wiphy_ciphers_allocated
;
714 /* protects the aggregated multicast list and filter calls */
715 spinlock_t filter_lock
;
717 /* used for uploading changed mc list */
718 struct work_struct reconfig_filter
;
720 /* used to reconfigure hardware SM PS */
721 struct work_struct recalc_smps
;
723 /* aggregated multicast list */
724 struct netdev_hw_addr_list mc_list
;
726 bool tim_in_locked_section
; /* see ieee80211_beacon_get() */
729 * suspended is true if we finished all the suspend _and_ we have
730 * not yet come up from resume. This is to be used by mac80211
731 * to ensure driver sanity during suspend and mac80211's own
732 * sanity. It can eventually be used for WoW as well.
737 * Resuming is true while suspended, but when we're reprogramming the
738 * hardware -- at that time it's allowed to use ieee80211_queue_work()
739 * again even though some other parts of the stack are still suspended
740 * and we still drop received frames to avoid waking the stack.
745 * quiescing is true during the suspend process _only_ to
746 * ease timer cancelling etc.
750 /* device is started */
753 int tx_headroom
; /* required headroom for hardware/radiotap */
755 /* Tasklet and skb queue to process calls from IRQ mode. All frames
756 * added to skb_queue will be processed, but frames in
757 * skb_queue_unreliable may be dropped if the total length of these
758 * queues increases over the limit. */
759 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
760 struct tasklet_struct tasklet
;
761 struct sk_buff_head skb_queue
;
762 struct sk_buff_head skb_queue_unreliable
;
765 * Internal FIFO queue which is shared between multiple rx path
766 * stages. Its main task is to provide a serialization mechanism,
767 * so all rx handlers can enjoy having exclusive access to their
768 * private data structures.
770 struct sk_buff_head rx_skb_queue
;
771 bool running_rx_handler
; /* protected by rx_skb_queue.lock */
775 * The mutex only protects the list and counter,
776 * reads are done in RCU.
777 * Additionally, the lock protects the hash table,
778 * the pending list and each BSS's TIM bitmap.
780 struct mutex sta_mtx
;
782 unsigned long num_sta
;
783 struct list_head sta_list
, sta_pending_list
;
784 struct sta_info
*sta_hash
[STA_HASH_SIZE
];
785 struct timer_list sta_cleanup
;
786 struct work_struct sta_finish_work
;
789 struct sk_buff_head pending
[IEEE80211_MAX_QUEUES
];
790 struct tasklet_struct tx_pending_tasklet
;
792 atomic_t agg_queue_stop
[IEEE80211_MAX_QUEUES
];
794 /* number of interfaces with corresponding IFF_ flags */
795 atomic_t iff_allmultis
, iff_promiscs
;
797 struct rate_control_ref
*rate_ctrl
;
799 struct crypto_blkcipher
*wep_tx_tfm
;
800 struct crypto_blkcipher
*wep_rx_tfm
;
804 struct list_head interfaces
;
805 struct mutex iflist_mtx
;
808 * Key mutex, protects sdata's key_list and sta_info's
809 * key pointers (write access, they're RCU.)
811 struct mutex key_mtx
;
813 /* mutex for scan and work locking */
816 /* Scanning and BSS list */
817 unsigned long scanning
;
818 struct cfg80211_ssid scan_ssid
;
819 struct cfg80211_scan_request
*int_scan_req
;
820 struct cfg80211_scan_request
*scan_req
, *hw_scan_req
;
821 struct ieee80211_channel
*scan_channel
;
822 enum ieee80211_band hw_scan_band
;
823 int scan_channel_idx
;
826 unsigned long leave_oper_channel_time
;
827 enum mac80211_scan_state next_scan_state
;
828 struct delayed_work scan_work
;
829 struct ieee80211_sub_if_data
*scan_sdata
;
830 enum nl80211_channel_type _oper_channel_type
;
831 struct ieee80211_channel
*oper_channel
, *csa_channel
;
833 /* Temporary remain-on-channel for off-channel operations */
834 struct ieee80211_channel
*tmp_channel
;
835 enum nl80211_channel_type tmp_channel_type
;
838 /* dot11CountersTable */
839 u32 dot11TransmittedFragmentCount
;
840 u32 dot11MulticastTransmittedFrameCount
;
841 u32 dot11FailedCount
;
843 u32 dot11MultipleRetryCount
;
844 u32 dot11FrameDuplicateCount
;
845 u32 dot11ReceivedFragmentCount
;
846 u32 dot11MulticastReceivedFrameCount
;
847 u32 dot11TransmittedFrameCount
;
849 #ifdef CONFIG_MAC80211_LEDS
850 int tx_led_counter
, rx_led_counter
;
851 struct led_trigger
*tx_led
, *rx_led
, *assoc_led
, *radio_led
;
852 char tx_led_name
[32], rx_led_name
[32],
853 assoc_led_name
[32], radio_led_name
[32];
856 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
857 /* TX/RX handler statistics */
858 unsigned int tx_handlers_drop
;
859 unsigned int tx_handlers_queued
;
860 unsigned int tx_handlers_drop_unencrypted
;
861 unsigned int tx_handlers_drop_fragment
;
862 unsigned int tx_handlers_drop_wep
;
863 unsigned int tx_handlers_drop_not_assoc
;
864 unsigned int tx_handlers_drop_unauth_port
;
865 unsigned int rx_handlers_drop
;
866 unsigned int rx_handlers_queued
;
867 unsigned int rx_handlers_drop_nullfunc
;
868 unsigned int rx_handlers_drop_defrag
;
869 unsigned int rx_handlers_drop_short
;
870 unsigned int rx_handlers_drop_passive_scan
;
871 unsigned int tx_expand_skb_head
;
872 unsigned int tx_expand_skb_head_cloned
;
873 unsigned int rx_expand_skb_head
;
874 unsigned int rx_expand_skb_head2
;
875 unsigned int rx_handlers_fragments
;
876 unsigned int tx_status_drop
;
877 #define I802_DEBUG_INC(c) (c)++
878 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
879 #define I802_DEBUG_INC(c) do { } while (0)
880 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
883 int total_ps_buffered
; /* total number of all buffered unicast and
884 * multicast packets for power saving stations
886 int wifi_wme_noack_test
;
887 unsigned int wmm_acm
; /* bit field of ACM bits (BIT(802.1D tag)) */
890 * Bitmask of enabled u-apsd queues,
891 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
894 unsigned int uapsd_queues
;
897 * Maximum number of buffered frames AP can deliver during a
898 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
899 * Needs a new association to take effect.
901 unsigned int uapsd_max_sp_len
;
904 bool offchannel_ps_enabled
;
906 * PS can only be enabled when we have exactly one managed
907 * interface (and monitors) in PS, this then points there.
909 struct ieee80211_sub_if_data
*ps_sdata
;
910 struct work_struct dynamic_ps_enable_work
;
911 struct work_struct dynamic_ps_disable_work
;
912 struct timer_list dynamic_ps_timer
;
913 struct notifier_block network_latency_notifier
;
914 struct notifier_block ifa_notifier
;
917 * The dynamic ps timeout configured from user space via WEXT -
918 * this will override whatever chosen by mac80211 internally.
920 int dynamic_ps_forced_timeout
;
921 int dynamic_ps_user_timeout
;
922 bool disable_dynamic_ps
;
924 int user_power_level
; /* in dBm */
925 int power_constr_level
; /* in dBm */
927 enum ieee80211_smps_mode smps_mode
;
929 struct work_struct restart_work
;
931 #ifdef CONFIG_MAC80211_DEBUGFS
932 struct local_debugfsdentries
{
933 struct dentry
*rcdir
;
938 /* dummy netdev for use w/ NAPI */
939 struct net_device napi_dev
;
941 struct napi_struct napi
;
944 static inline struct ieee80211_sub_if_data
*
945 IEEE80211_DEV_TO_SUB_IF(struct net_device
*dev
)
947 return netdev_priv(dev
);
950 /* this struct represents 802.11n's RA/TID combination */
951 struct ieee80211_ra_tid
{
956 /* Parsed Information Elements */
957 struct ieee802_11_elems
{
961 /* pointers to IEs */
967 struct ieee80211_tim_ie
*tim
;
976 struct ieee80211_ht_cap
*ht_cap_elem
;
977 struct ieee80211_ht_info
*ht_info_elem
;
978 struct ieee80211_meshconf_ie
*mesh_config
;
984 struct ieee80211_rann_ie
*rann
;
988 u8
*quiet_elem
; /* first quite element */
991 /* length of them, respectively */
1003 u8 ext_supp_rates_len
;
1011 u8 ch_switch_elem_len
;
1012 u8 country_elem_len
;
1013 u8 pwr_constr_elem_len
;
1015 u8 num_of_quiet_elem
; /* can be more the one */
1019 static inline struct ieee80211_local
*hw_to_local(
1020 struct ieee80211_hw
*hw
)
1022 return container_of(hw
, struct ieee80211_local
, hw
);
1025 static inline struct ieee80211_hw
*local_to_hw(
1026 struct ieee80211_local
*local
)
1032 static inline int ieee80211_bssid_match(const u8
*raddr
, const u8
*addr
)
1034 return compare_ether_addr(raddr
, addr
) == 0 ||
1035 is_broadcast_ether_addr(raddr
);
1039 int ieee80211_hw_config(struct ieee80211_local
*local
, u32 changed
);
1040 void ieee80211_tx_set_protected(struct ieee80211_tx_data
*tx
);
1041 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data
*sdata
,
1043 void ieee80211_configure_filter(struct ieee80211_local
*local
);
1044 u32
ieee80211_reset_erp_info(struct ieee80211_sub_if_data
*sdata
);
1046 extern bool ieee80211_disable_40mhz_24ghz
;
1049 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data
*sdata
);
1050 int ieee80211_mgd_auth(struct ieee80211_sub_if_data
*sdata
,
1051 struct cfg80211_auth_request
*req
);
1052 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data
*sdata
,
1053 struct cfg80211_assoc_request
*req
);
1054 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data
*sdata
,
1055 struct cfg80211_deauth_request
*req
,
1057 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data
*sdata
,
1058 struct cfg80211_disassoc_request
*req
,
1060 void ieee80211_send_pspoll(struct ieee80211_local
*local
,
1061 struct ieee80211_sub_if_data
*sdata
);
1062 void ieee80211_recalc_ps(struct ieee80211_local
*local
, s32 latency
);
1063 int ieee80211_max_network_latency(struct notifier_block
*nb
,
1064 unsigned long data
, void *dummy
);
1065 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data
*sdata
);
1066 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data
*sdata
,
1067 struct ieee80211_channel_sw_ie
*sw_elem
,
1068 struct ieee80211_bss
*bss
,
1070 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data
*sdata
);
1071 void ieee80211_sta_restart(struct ieee80211_sub_if_data
*sdata
);
1072 void ieee80211_sta_work(struct ieee80211_sub_if_data
*sdata
);
1073 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1074 struct sk_buff
*skb
);
1075 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data
*sdata
);
1076 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data
*sdata
);
1079 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local
*local
);
1080 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data
*sdata
);
1081 struct sta_info
*ieee80211_ibss_add_sta(struct ieee80211_sub_if_data
*sdata
,
1082 u8
*bssid
, u8
*addr
, u32 supp_rates
,
1084 int ieee80211_ibss_join(struct ieee80211_sub_if_data
*sdata
,
1085 struct cfg80211_ibss_params
*params
);
1086 int ieee80211_ibss_leave(struct ieee80211_sub_if_data
*sdata
);
1087 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data
*sdata
);
1088 void ieee80211_ibss_restart(struct ieee80211_sub_if_data
*sdata
);
1089 void ieee80211_ibss_work(struct ieee80211_sub_if_data
*sdata
);
1090 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1091 struct sk_buff
*skb
);
1094 void ieee80211_mesh_work(struct ieee80211_sub_if_data
*sdata
);
1095 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1096 struct sk_buff
*skb
);
1098 /* scan/BSS handling */
1099 void ieee80211_scan_work(struct work_struct
*work
);
1100 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data
*sdata
,
1101 const u8
*ssid
, u8 ssid_len
,
1102 struct ieee80211_channel
*chan
);
1103 int ieee80211_request_scan(struct ieee80211_sub_if_data
*sdata
,
1104 struct cfg80211_scan_request
*req
);
1105 void ieee80211_scan_cancel(struct ieee80211_local
*local
);
1107 ieee80211_scan_rx(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
);
1109 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local
*local
);
1110 struct ieee80211_bss
*
1111 ieee80211_bss_info_update(struct ieee80211_local
*local
,
1112 struct ieee80211_rx_status
*rx_status
,
1113 struct ieee80211_mgmt
*mgmt
,
1115 struct ieee802_11_elems
*elems
,
1116 struct ieee80211_channel
*channel
,
1118 struct ieee80211_bss
*
1119 ieee80211_rx_bss_get(struct ieee80211_local
*local
, u8
*bssid
, int freq
,
1120 u8
*ssid
, u8 ssid_len
);
1121 void ieee80211_rx_bss_put(struct ieee80211_local
*local
,
1122 struct ieee80211_bss
*bss
);
1124 /* off-channel helpers */
1125 void ieee80211_offchannel_stop_beaconing(struct ieee80211_local
*local
);
1126 void ieee80211_offchannel_stop_station(struct ieee80211_local
*local
);
1127 void ieee80211_offchannel_return(struct ieee80211_local
*local
,
1128 bool enable_beaconing
);
1130 /* interface handling */
1131 int ieee80211_iface_init(void);
1132 void ieee80211_iface_exit(void);
1133 int ieee80211_if_add(struct ieee80211_local
*local
, const char *name
,
1134 struct net_device
**new_dev
, enum nl80211_iftype type
,
1135 struct vif_params
*params
);
1136 int ieee80211_if_change_type(struct ieee80211_sub_if_data
*sdata
,
1137 enum nl80211_iftype type
);
1138 void ieee80211_if_remove(struct ieee80211_sub_if_data
*sdata
);
1139 void ieee80211_remove_interfaces(struct ieee80211_local
*local
);
1140 u32
__ieee80211_recalc_idle(struct ieee80211_local
*local
);
1141 void ieee80211_recalc_idle(struct ieee80211_local
*local
);
1142 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data
*sdata
,
1145 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data
*sdata
)
1147 return test_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
1151 void ieee80211_clear_tx_pending(struct ieee80211_local
*local
);
1152 void ieee80211_tx_pending(unsigned long data
);
1153 netdev_tx_t
ieee80211_monitor_start_xmit(struct sk_buff
*skb
,
1154 struct net_device
*dev
);
1155 netdev_tx_t
ieee80211_subif_start_xmit(struct sk_buff
*skb
,
1156 struct net_device
*dev
);
1159 * radiotap header for status frames
1161 struct ieee80211_tx_status_rtap_hdr
{
1162 struct ieee80211_radiotap_header hdr
;
1164 u8 padding_for_rate
;
1171 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band
*sband
,
1172 struct ieee80211_ht_cap
*ht_cap_ie
,
1173 struct ieee80211_sta_ht_cap
*ht_cap
);
1174 void ieee80211_send_bar(struct ieee80211_sub_if_data
*sdata
, u8
*ra
, u16 tid
, u16 ssn
);
1175 void ieee80211_send_delba(struct ieee80211_sub_if_data
*sdata
,
1176 const u8
*da
, u16 tid
,
1177 u16 initiator
, u16 reason_code
);
1178 int ieee80211_send_smps_action(struct ieee80211_sub_if_data
*sdata
,
1179 enum ieee80211_smps_mode smps
, const u8
*da
,
1181 void ieee80211_request_smps_work(struct work_struct
*work
);
1183 void ___ieee80211_stop_rx_ba_session(struct sta_info
*sta
, u16 tid
,
1184 u16 initiator
, u16 reason
, bool stop
);
1185 void __ieee80211_stop_rx_ba_session(struct sta_info
*sta
, u16 tid
,
1186 u16 initiator
, u16 reason
, bool stop
);
1187 void ieee80211_sta_tear_down_BA_sessions(struct sta_info
*sta
, bool tx
);
1188 void ieee80211_process_delba(struct ieee80211_sub_if_data
*sdata
,
1189 struct sta_info
*sta
,
1190 struct ieee80211_mgmt
*mgmt
, size_t len
);
1191 void ieee80211_process_addba_resp(struct ieee80211_local
*local
,
1192 struct sta_info
*sta
,
1193 struct ieee80211_mgmt
*mgmt
,
1195 void ieee80211_process_addba_request(struct ieee80211_local
*local
,
1196 struct sta_info
*sta
,
1197 struct ieee80211_mgmt
*mgmt
,
1200 int __ieee80211_stop_tx_ba_session(struct sta_info
*sta
, u16 tid
,
1201 enum ieee80211_back_parties initiator
,
1203 int ___ieee80211_stop_tx_ba_session(struct sta_info
*sta
, u16 tid
,
1204 enum ieee80211_back_parties initiator
,
1206 void ieee80211_start_tx_ba_cb(struct ieee80211_vif
*vif
, u8
*ra
, u16 tid
);
1207 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif
*vif
, u8
*ra
, u8 tid
);
1208 void ieee80211_ba_session_work(struct work_struct
*work
);
1209 void ieee80211_tx_ba_session_handle_start(struct sta_info
*sta
, int tid
);
1210 void ieee80211_release_reorder_timeout(struct sta_info
*sta
, int tid
);
1212 /* Spectrum management */
1213 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data
*sdata
,
1214 struct ieee80211_mgmt
*mgmt
,
1217 /* Suspend/resume and hw reconfiguration */
1218 int ieee80211_reconfig(struct ieee80211_local
*local
);
1219 void ieee80211_stop_device(struct ieee80211_local
*local
);
1222 int __ieee80211_suspend(struct ieee80211_hw
*hw
);
1224 static inline int __ieee80211_resume(struct ieee80211_hw
*hw
)
1226 struct ieee80211_local
*local
= hw_to_local(hw
);
1228 WARN(test_bit(SCAN_HW_SCANNING
, &local
->scanning
),
1229 "%s: resume with hardware scan still in progress\n",
1230 wiphy_name(hw
->wiphy
));
1232 return ieee80211_reconfig(hw_to_local(hw
));
1235 static inline int __ieee80211_suspend(struct ieee80211_hw
*hw
)
1240 static inline int __ieee80211_resume(struct ieee80211_hw
*hw
)
1246 /* utility functions/constants */
1247 extern void *mac80211_wiphy_privid
; /* for wiphy privid */
1248 u8
*ieee80211_get_bssid(struct ieee80211_hdr
*hdr
, size_t len
,
1249 enum nl80211_iftype type
);
1250 int ieee80211_frame_duration(struct ieee80211_local
*local
, size_t len
,
1251 int rate
, int erp
, int short_preamble
);
1252 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data
*sdata
, int keyidx
,
1253 struct ieee80211_hdr
*hdr
, const u8
*tsc
,
1255 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data
*sdata
);
1256 void ieee80211_tx_skb(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
);
1257 void ieee802_11_parse_elems(u8
*start
, size_t len
,
1258 struct ieee802_11_elems
*elems
);
1259 u32
ieee802_11_parse_elems_crc(u8
*start
, size_t len
,
1260 struct ieee802_11_elems
*elems
,
1261 u64 filter
, u32 crc
);
1262 u32
ieee80211_mandatory_rates(struct ieee80211_local
*local
,
1263 enum ieee80211_band band
);
1265 void ieee80211_dynamic_ps_enable_work(struct work_struct
*work
);
1266 void ieee80211_dynamic_ps_disable_work(struct work_struct
*work
);
1267 void ieee80211_dynamic_ps_timer(unsigned long data
);
1268 void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
1269 struct ieee80211_sub_if_data
*sdata
,
1271 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data
*sdata
,
1272 struct ieee80211_hdr
*hdr
);
1273 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data
*sdata
,
1274 struct ieee80211_hdr
*hdr
, bool ack
);
1275 void ieee80211_beacon_connection_loss_work(struct work_struct
*work
);
1277 void ieee80211_wake_queues_by_reason(struct ieee80211_hw
*hw
,
1278 enum queue_stop_reason reason
);
1279 void ieee80211_stop_queues_by_reason(struct ieee80211_hw
*hw
,
1280 enum queue_stop_reason reason
);
1281 void ieee80211_wake_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
1282 enum queue_stop_reason reason
);
1283 void ieee80211_stop_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
1284 enum queue_stop_reason reason
);
1285 void ieee80211_add_pending_skb(struct ieee80211_local
*local
,
1286 struct sk_buff
*skb
);
1287 int ieee80211_add_pending_skbs(struct ieee80211_local
*local
,
1288 struct sk_buff_head
*skbs
);
1289 int ieee80211_add_pending_skbs_fn(struct ieee80211_local
*local
,
1290 struct sk_buff_head
*skbs
,
1291 void (*fn
)(void *data
), void *data
);
1293 void ieee80211_send_auth(struct ieee80211_sub_if_data
*sdata
,
1294 u16 transaction
, u16 auth_alg
,
1295 u8
*extra
, size_t extra_len
, const u8
*bssid
,
1296 const u8
*key
, u8 key_len
, u8 key_idx
);
1297 int ieee80211_build_preq_ies(struct ieee80211_local
*local
, u8
*buffer
,
1298 const u8
*ie
, size_t ie_len
,
1299 enum ieee80211_band band
, u32 rate_mask
,
1301 struct sk_buff
*ieee80211_build_probe_req(struct ieee80211_sub_if_data
*sdata
,
1303 const u8
*ssid
, size_t ssid_len
,
1304 const u8
*ie
, size_t ie_len
);
1305 void ieee80211_send_probe_req(struct ieee80211_sub_if_data
*sdata
, u8
*dst
,
1306 const u8
*ssid
, size_t ssid_len
,
1307 const u8
*ie
, size_t ie_len
);
1309 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data
*sdata
,
1310 const size_t supp_rates_len
,
1311 const u8
*supp_rates
);
1312 u32
ieee80211_sta_get_rates(struct ieee80211_local
*local
,
1313 struct ieee802_11_elems
*elems
,
1314 enum ieee80211_band band
);
1315 int __ieee80211_request_smps(struct ieee80211_sub_if_data
*sdata
,
1316 enum ieee80211_smps_mode smps_mode
);
1317 void ieee80211_recalc_smps(struct ieee80211_local
*local
);
1319 size_t ieee80211_ie_split(const u8
*ies
, size_t ielen
,
1320 const u8
*ids
, int n_ids
, size_t offset
);
1321 size_t ieee80211_ie_split_vendor(const u8
*ies
, size_t ielen
, size_t offset
);
1323 /* internal work items */
1324 void ieee80211_work_init(struct ieee80211_local
*local
);
1325 void ieee80211_add_work(struct ieee80211_work
*wk
);
1326 void free_work(struct ieee80211_work
*wk
);
1327 void ieee80211_work_purge(struct ieee80211_sub_if_data
*sdata
);
1328 ieee80211_rx_result
ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data
*sdata
,
1329 struct sk_buff
*skb
);
1330 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data
*sdata
,
1331 struct ieee80211_channel
*chan
,
1332 enum nl80211_channel_type channel_type
,
1333 unsigned int duration
, u64
*cookie
);
1334 int ieee80211_wk_cancel_remain_on_channel(
1335 struct ieee80211_sub_if_data
*sdata
, u64 cookie
);
1337 /* channel management */
1338 enum ieee80211_chan_mode
{
1339 CHAN_MODE_UNDEFINED
,
1344 enum ieee80211_chan_mode
1345 ieee80211_get_channel_mode(struct ieee80211_local
*local
,
1346 struct ieee80211_sub_if_data
*ignore
);
1347 bool ieee80211_set_channel_type(struct ieee80211_local
*local
,
1348 struct ieee80211_sub_if_data
*sdata
,
1349 enum nl80211_channel_type chantype
);
1351 #ifdef CONFIG_MAC80211_NOINLINE
1352 #define debug_noinline noinline
1354 #define debug_noinline
1357 #endif /* IEEE80211_I_H */