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
54 * Time after which we ignore scan results and no longer report/use
57 #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
59 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
61 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
62 (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \
63 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \
64 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \
65 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
67 #define IEEE80211_DEFAULT_MAX_SP_LEN \
68 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
70 struct ieee80211_fragment_entry
{
71 unsigned long first_frag_time
;
73 unsigned int rx_queue
;
74 unsigned int last_frag
;
75 unsigned int extra_len
;
76 struct sk_buff_head skb_list
;
77 int ccmp
; /* Whether fragments were encrypted with CCMP */
78 u8 last_pn
[6]; /* PN of the last fragment if CCMP was used */
82 struct ieee80211_bss
{
83 /* don't want to look up all the time */
85 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
92 unsigned long last_probe_resp
;
94 #ifdef CONFIG_MAC80211_MESH
100 #define IEEE80211_MAX_SUPP_RATES 32
101 u8 supp_rates
[IEEE80211_MAX_SUPP_RATES
];
102 size_t supp_rates_len
;
105 * During assocation, we save an ERP value from a probe response so
106 * that we can feed ERP info to the driver when handling the
107 * association completes. these fields probably won't be up-to-date
108 * otherwise, you probably don't want to use them.
114 static inline u8
*bss_mesh_cfg(struct ieee80211_bss
*bss
)
116 #ifdef CONFIG_MAC80211_MESH
117 return bss
->mesh_cfg
;
122 static inline u8
*bss_mesh_id(struct ieee80211_bss
*bss
)
124 #ifdef CONFIG_MAC80211_MESH
130 static inline u8
bss_mesh_id_len(struct ieee80211_bss
*bss
)
132 #ifdef CONFIG_MAC80211_MESH
133 return bss
->mesh_id_len
;
139 typedef unsigned __bitwise__ ieee80211_tx_result
;
140 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
141 #define TX_DROP ((__force ieee80211_tx_result) 1u)
142 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
144 #define IEEE80211_TX_FRAGMENTED BIT(0)
145 #define IEEE80211_TX_UNICAST BIT(1)
146 #define IEEE80211_TX_PS_BUFFERED BIT(2)
148 struct ieee80211_tx_data
{
150 struct ieee80211_local
*local
;
151 struct ieee80211_sub_if_data
*sdata
;
152 struct sta_info
*sta
;
153 struct ieee80211_key
*key
;
155 struct ieee80211_channel
*channel
;
162 typedef unsigned __bitwise__ ieee80211_rx_result
;
163 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
164 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
165 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
166 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
168 #define IEEE80211_RX_IN_SCAN BIT(0)
169 /* frame is destined to interface currently processed (incl. multicast frames) */
170 #define IEEE80211_RX_RA_MATCH BIT(1)
171 #define IEEE80211_RX_AMSDU BIT(2)
172 #define IEEE80211_RX_FRAGMENTED BIT(3)
173 #define IEEE80211_MALFORMED_ACTION_FRM BIT(4)
174 /* only add flags here that do not change with subframes of an aMPDU */
176 struct ieee80211_rx_data
{
178 struct ieee80211_local
*local
;
179 struct ieee80211_sub_if_data
*sdata
;
180 struct sta_info
*sta
;
181 struct ieee80211_key
*key
;
191 int head_len
, tail_len
;
195 struct ieee80211_if_ap
{
196 struct beacon_data
*beacon
;
198 struct list_head vlans
;
200 /* yes, this looks ugly, but guarantees that we can later use
202 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
203 u8 tim
[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID
+ 1)];
204 struct sk_buff_head ps_bc_buf
;
205 atomic_t num_sta_ps
; /* number of stations in PS mode */
209 struct ieee80211_if_wds
{
210 struct sta_info
*sta
;
211 u8 remote_addr
[ETH_ALEN
];
214 struct ieee80211_if_vlan
{
215 struct list_head list
;
217 /* used for all tx if the VLAN is configured to 4-addr mode */
218 struct sta_info
*sta
;
222 __u32 fwded_mcast
; /* Mesh forwarded multicast frames */
223 __u32 fwded_unicast
; /* Mesh forwarded unicast frames */
224 __u32 fwded_frames
; /* Mesh total forwarded frames */
225 __u32 dropped_frames_ttl
; /* Not transmitted since mesh_ttl == 0*/
226 __u32 dropped_frames_no_route
; /* Not transmitted, no route found */
227 atomic_t estab_plinks
;
230 #define PREQ_Q_F_START 0x1
231 #define PREQ_Q_F_REFRESH 0x2
232 struct mesh_preq_queue
{
233 struct list_head list
;
238 enum ieee80211_work_type
{
239 IEEE80211_WORK_ABORT
,
240 IEEE80211_WORK_DIRECT_PROBE
,
242 IEEE80211_WORK_ASSOC_BEACON_WAIT
,
243 IEEE80211_WORK_ASSOC
,
244 IEEE80211_WORK_REMAIN_ON_CHANNEL
,
248 * enum work_done_result - indicates what to do after work was done
250 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
251 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
252 * should be requeued.
254 enum work_done_result
{
259 struct ieee80211_work
{
260 struct list_head list
;
262 struct rcu_head rcu_head
;
264 struct ieee80211_sub_if_data
*sdata
;
266 enum work_done_result (*done
)(struct ieee80211_work
*wk
,
267 struct sk_buff
*skb
);
269 struct ieee80211_channel
*chan
;
270 enum nl80211_channel_type chan_type
;
272 unsigned long timeout
;
273 enum ieee80211_work_type type
;
275 u8 filter_ta
[ETH_ALEN
];
282 u16 algorithm
, transaction
;
283 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
285 u8 key
[WLAN_KEY_LEN_WEP104
];
290 struct cfg80211_bss
*bss
;
291 const u8
*supp_rates
;
292 const u8
*ht_information_ie
;
293 enum ieee80211_smps_mode smps
;
296 u8 prev_bssid
[ETH_ALEN
];
297 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
300 bool wmm_used
, use_11n
, uapsd_used
;
312 /* flags used in struct ieee80211_if_managed.flags */
313 enum ieee80211_sta_flags
{
314 IEEE80211_STA_BEACON_POLL
= BIT(0),
315 IEEE80211_STA_CONNECTION_POLL
= BIT(1),
316 IEEE80211_STA_CONTROL_PORT
= BIT(2),
317 IEEE80211_STA_DISABLE_11N
= BIT(4),
318 IEEE80211_STA_CSA_RECEIVED
= BIT(5),
319 IEEE80211_STA_MFP_ENABLED
= BIT(6),
320 IEEE80211_STA_UAPSD_ENABLED
= BIT(7),
321 IEEE80211_STA_NULLFUNC_ACKED
= BIT(8),
322 IEEE80211_STA_RESET_SIGNAL_AVE
= BIT(9),
325 struct ieee80211_if_managed
{
326 struct timer_list timer
;
327 struct timer_list conn_mon_timer
;
328 struct timer_list bcn_mon_timer
;
329 struct timer_list chswitch_timer
;
330 struct work_struct monitor_work
;
331 struct work_struct chswitch_work
;
332 struct work_struct beacon_connection_loss_work
;
334 unsigned long probe_timeout
;
335 int probe_send_count
;
338 struct cfg80211_bss
*associated
;
344 unsigned long timers_running
; /* used for quiesce/restart */
345 bool powersave
; /* powersave requested for this iface */
346 enum ieee80211_smps_mode req_smps
, /* requested smps mode */
347 ap_smps
, /* smps mode AP thinks we're in */
348 driver_smps_mode
; /* smps mode request */
350 struct work_struct request_smps_work
;
357 IEEE80211_MFP_DISABLED
,
358 IEEE80211_MFP_OPTIONAL
,
359 IEEE80211_MFP_REQUIRED
360 } mfp
; /* management frame protection */
362 int wmm_last_param_set
;
366 /* Signal strength from the last Beacon frame in the current BSS. */
367 int last_beacon_signal
;
370 * Weighted average of the signal strength from Beacon frames in the
371 * current BSS. This is in units of 1/16 of the signal unit to maintain
372 * accuracy and to speed up calculations, i.e., the value need to be
373 * divided by 16 to get the actual value.
375 int ave_beacon_signal
;
378 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
379 * that triggered a cqm event. 0 indicates that no event has been
380 * generated for the current association.
382 int last_cqm_event_signal
;
385 struct ieee80211_if_ibss
{
386 struct timer_list timer
;
390 unsigned long last_scan_completed
;
401 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
404 struct ieee80211_channel
*channel
;
406 unsigned long ibss_join_req
;
407 /* probe response/beacon for IBSS */
408 struct sk_buff
*presp
, *skb
;
411 IEEE80211_IBSS_MLME_SEARCH
,
412 IEEE80211_IBSS_MLME_JOINED
,
416 struct ieee80211_if_mesh
{
417 struct timer_list housekeeping_timer
;
418 struct timer_list mesh_path_timer
;
419 struct timer_list mesh_path_root_timer
;
421 unsigned long timers_running
;
423 unsigned long wrkq_flags
;
425 u8 mesh_id
[IEEE80211_MAX_MESH_ID_LEN
];
427 /* Active Path Selection Protocol Identifier */
429 /* Active Path Selection Metric Identifier */
431 /* Congestion Control Mode Identifier */
433 /* Synchronization Protocol Identifier */
435 /* Authentication Protocol Identifier */
437 /* Local mesh Sequence Number */
439 /* Last used PREQ ID */
442 /* Timestamp of last SN update */
443 unsigned long last_sn_update
;
444 /* Timestamp of last SN sent */
445 unsigned long last_preq
;
446 struct mesh_rmc
*rmc
;
447 spinlock_t mesh_preq_queue_lock
;
448 struct mesh_preq_queue preq_queue
;
450 struct mesh_stats mshstats
;
451 struct mesh_config mshcfg
;
453 bool accepting_plinks
;
456 #ifdef CONFIG_MAC80211_MESH
457 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
458 do { (msh)->mshstats.name++; } while (0)
460 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
465 * enum ieee80211_sub_if_data_flags - virtual interface flags
467 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
468 * @IEEE80211_SDATA_PROMISC: interface is promisc
469 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
470 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
471 * associated stations and deliver multicast frames both
472 * back to wireless media and to the local net stack.
474 enum ieee80211_sub_if_data_flags
{
475 IEEE80211_SDATA_ALLMULTI
= BIT(0),
476 IEEE80211_SDATA_PROMISC
= BIT(1),
477 IEEE80211_SDATA_OPERATING_GMODE
= BIT(2),
478 IEEE80211_SDATA_DONT_BRIDGE_PACKETS
= BIT(3),
481 struct ieee80211_sub_if_data
{
482 struct list_head list
;
484 struct wireless_dev wdev
;
487 struct list_head key_list
;
489 struct net_device
*dev
;
490 struct ieee80211_local
*local
;
494 int drop_unencrypted
;
499 * keep track of whether the HT opmode (stored in
500 * vif.bss_info.ht_operation_mode) is valid.
502 bool ht_opmode_valid
;
504 /* to detect idle changes */
507 /* Fragment table for host-based reassembly */
508 struct ieee80211_fragment_entry fragments
[IEEE80211_FRAGMENT_MAX
];
509 unsigned int fragment_next
;
511 #define NUM_DEFAULT_KEYS 4
512 #define NUM_DEFAULT_MGMT_KEYS 2
513 struct ieee80211_key
*keys
[NUM_DEFAULT_KEYS
+ NUM_DEFAULT_MGMT_KEYS
];
514 struct ieee80211_key
*default_key
;
515 struct ieee80211_key
*default_mgmt_key
;
519 struct work_struct work
;
520 struct sk_buff_head skb_queue
;
522 bool arp_filter_state
;
525 * AP this belongs to: self in AP mode and
526 * corresponding AP in VLAN mode, NULL for
527 * all others (might be needed later in IBSS)
529 struct ieee80211_if_ap
*bss
;
531 /* bitmap of allowed (non-MCS) rate indexes for rate control */
532 u32 rc_rateidx_mask
[IEEE80211_NUM_BANDS
];
535 struct ieee80211_if_ap ap
;
536 struct ieee80211_if_wds wds
;
537 struct ieee80211_if_vlan vlan
;
538 struct ieee80211_if_managed mgd
;
539 struct ieee80211_if_ibss ibss
;
540 #ifdef CONFIG_MAC80211_MESH
541 struct ieee80211_if_mesh mesh
;
546 #ifdef CONFIG_MAC80211_DEBUGFS
549 struct dentry
*default_key
;
550 struct dentry
*default_mgmt_key
;
553 /* must be last, dynamically sized area in this! */
554 struct ieee80211_vif vif
;
558 struct ieee80211_sub_if_data
*vif_to_sdata(struct ieee80211_vif
*p
)
560 return container_of(p
, struct ieee80211_sub_if_data
, vif
);
564 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data
*sdata
,
565 u8 mesh_id_len
, u8
*mesh_id
)
567 #ifdef CONFIG_MAC80211_MESH
568 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
569 ifmsh
->mesh_id_len
= mesh_id_len
;
570 memcpy(ifmsh
->mesh_id
, mesh_id
, mesh_id_len
);
576 enum sdata_queue_type
{
577 IEEE80211_SDATA_QUEUE_TYPE_FRAME
= 0,
578 IEEE80211_SDATA_QUEUE_AGG_START
= 1,
579 IEEE80211_SDATA_QUEUE_AGG_STOP
= 2,
583 IEEE80211_RX_MSG
= 1,
584 IEEE80211_TX_STATUS_MSG
= 2,
587 enum queue_stop_reason
{
588 IEEE80211_QUEUE_STOP_REASON_DRIVER
,
589 IEEE80211_QUEUE_STOP_REASON_PS
,
590 IEEE80211_QUEUE_STOP_REASON_CSA
,
591 IEEE80211_QUEUE_STOP_REASON_AGGREGATION
,
592 IEEE80211_QUEUE_STOP_REASON_SUSPEND
,
593 IEEE80211_QUEUE_STOP_REASON_SKB_ADD
,
597 * mac80211 scan flags - currently active scan mode
599 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
600 * well be on the operating channel
601 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
602 * determine if we are on the operating channel or not
603 * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
604 * gets only set in conjunction with SCAN_SW_SCANNING
613 * enum mac80211_scan_state - scan state machine states
615 * @SCAN_DECISION: Main entry point to the scan state machine, this state
616 * determines if we should keep on scanning or switch back to the
618 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
619 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
620 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
621 * about us leaving the channel and stop all associated STA interfaces
622 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
623 * AP about us being back and restart all associated STA interfaces
625 enum mac80211_scan_state
{
629 SCAN_LEAVE_OPER_CHANNEL
,
630 SCAN_ENTER_OPER_CHANNEL
,
633 struct ieee80211_local
{
634 /* embed the driver visible part.
635 * don't cast (use the static inlines below), but we keep
636 * it first anyway so they become a no-op */
637 struct ieee80211_hw hw
;
639 const struct ieee80211_ops
*ops
;
642 * work stuff, potentially off-channel (in the future)
644 struct list_head work_list
;
645 struct timer_list work_timer
;
646 struct work_struct work_work
;
647 struct sk_buff_head work_skb_queue
;
650 * private workqueue to mac80211. mac80211 makes this accessible
651 * via ieee80211_queue_work()
653 struct workqueue_struct
*workqueue
;
655 unsigned long queue_stop_reasons
[IEEE80211_MAX_QUEUES
];
656 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
657 spinlock_t queue_stop_reason_lock
;
660 int monitors
, cooked_mntrs
;
661 /* number of interfaces with corresponding FIF_ flags */
662 int fif_fcsfail
, fif_plcpfail
, fif_control
, fif_other_bss
, fif_pspoll
;
663 unsigned int filter_flags
; /* FIF_* */
665 /* protects the aggregated multicast list and filter calls */
666 spinlock_t filter_lock
;
668 /* used for uploading changed mc list */
669 struct work_struct reconfig_filter
;
671 /* used to reconfigure hardware SM PS */
672 struct work_struct recalc_smps
;
674 /* aggregated multicast list */
675 struct netdev_hw_addr_list mc_list
;
677 bool tim_in_locked_section
; /* see ieee80211_beacon_get() */
680 * suspended is true if we finished all the suspend _and_ we have
681 * not yet come up from resume. This is to be used by mac80211
682 * to ensure driver sanity during suspend and mac80211's own
683 * sanity. It can eventually be used for WoW as well.
688 * Resuming is true while suspended, but when we're reprogramming the
689 * hardware -- at that time it's allowed to use ieee80211_queue_work()
690 * again even though some other parts of the stack are still suspended
691 * and we still drop received frames to avoid waking the stack.
696 * quiescing is true during the suspend process _only_ to
697 * ease timer cancelling etc.
701 /* device is started */
704 int tx_headroom
; /* required headroom for hardware/radiotap */
706 /* Tasklet and skb queue to process calls from IRQ mode. All frames
707 * added to skb_queue will be processed, but frames in
708 * skb_queue_unreliable may be dropped if the total length of these
709 * queues increases over the limit. */
710 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
711 struct tasklet_struct tasklet
;
712 struct sk_buff_head skb_queue
;
713 struct sk_buff_head skb_queue_unreliable
;
717 * The mutex only protects the list and counter,
718 * reads are done in RCU.
719 * Additionally, the lock protects the hash table,
720 * the pending list and each BSS's TIM bitmap.
722 struct mutex sta_mtx
;
724 unsigned long num_sta
;
725 struct list_head sta_list
, sta_pending_list
;
726 struct sta_info
*sta_hash
[STA_HASH_SIZE
];
727 struct timer_list sta_cleanup
;
728 struct work_struct sta_finish_work
;
731 struct sk_buff_head pending
[IEEE80211_MAX_QUEUES
];
732 struct tasklet_struct tx_pending_tasklet
;
734 atomic_t agg_queue_stop
[IEEE80211_MAX_QUEUES
];
736 /* number of interfaces with corresponding IFF_ flags */
737 atomic_t iff_allmultis
, iff_promiscs
;
739 struct rate_control_ref
*rate_ctrl
;
741 struct crypto_blkcipher
*wep_tx_tfm
;
742 struct crypto_blkcipher
*wep_rx_tfm
;
746 struct list_head interfaces
;
747 struct mutex iflist_mtx
;
750 * Key mutex, protects sdata's key_list and sta_info's
751 * key pointers (write access, they're RCU.)
753 struct mutex key_mtx
;
755 /* mutex for scan and work locking */
758 /* Scanning and BSS list */
759 unsigned long scanning
;
760 struct cfg80211_ssid scan_ssid
;
761 struct cfg80211_scan_request
*int_scan_req
;
762 struct cfg80211_scan_request
*scan_req
, *hw_scan_req
;
763 struct ieee80211_channel
*scan_channel
;
764 enum ieee80211_band hw_scan_band
;
765 int scan_channel_idx
;
768 unsigned long leave_oper_channel_time
;
769 enum mac80211_scan_state next_scan_state
;
770 struct delayed_work scan_work
;
771 struct ieee80211_sub_if_data
*scan_sdata
;
772 enum nl80211_channel_type _oper_channel_type
;
773 struct ieee80211_channel
*oper_channel
, *csa_channel
;
775 /* Temporary remain-on-channel for off-channel operations */
776 struct ieee80211_channel
*tmp_channel
;
777 enum nl80211_channel_type tmp_channel_type
;
780 /* dot11CountersTable */
781 u32 dot11TransmittedFragmentCount
;
782 u32 dot11MulticastTransmittedFrameCount
;
783 u32 dot11FailedCount
;
785 u32 dot11MultipleRetryCount
;
786 u32 dot11FrameDuplicateCount
;
787 u32 dot11ReceivedFragmentCount
;
788 u32 dot11MulticastReceivedFrameCount
;
789 u32 dot11TransmittedFrameCount
;
791 #ifdef CONFIG_MAC80211_LEDS
792 int tx_led_counter
, rx_led_counter
;
793 struct led_trigger
*tx_led
, *rx_led
, *assoc_led
, *radio_led
;
794 char tx_led_name
[32], rx_led_name
[32],
795 assoc_led_name
[32], radio_led_name
[32];
798 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
799 /* TX/RX handler statistics */
800 unsigned int tx_handlers_drop
;
801 unsigned int tx_handlers_queued
;
802 unsigned int tx_handlers_drop_unencrypted
;
803 unsigned int tx_handlers_drop_fragment
;
804 unsigned int tx_handlers_drop_wep
;
805 unsigned int tx_handlers_drop_not_assoc
;
806 unsigned int tx_handlers_drop_unauth_port
;
807 unsigned int rx_handlers_drop
;
808 unsigned int rx_handlers_queued
;
809 unsigned int rx_handlers_drop_nullfunc
;
810 unsigned int rx_handlers_drop_defrag
;
811 unsigned int rx_handlers_drop_short
;
812 unsigned int rx_handlers_drop_passive_scan
;
813 unsigned int tx_expand_skb_head
;
814 unsigned int tx_expand_skb_head_cloned
;
815 unsigned int rx_expand_skb_head
;
816 unsigned int rx_expand_skb_head2
;
817 unsigned int rx_handlers_fragments
;
818 unsigned int tx_status_drop
;
819 #define I802_DEBUG_INC(c) (c)++
820 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
821 #define I802_DEBUG_INC(c) do { } while (0)
822 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
825 int total_ps_buffered
; /* total number of all buffered unicast and
826 * multicast packets for power saving stations
828 int wifi_wme_noack_test
;
829 unsigned int wmm_acm
; /* bit field of ACM bits (BIT(802.1D tag)) */
832 * Bitmask of enabled u-apsd queues,
833 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
836 unsigned int uapsd_queues
;
839 * Maximum number of buffered frames AP can deliver during a
840 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
841 * Needs a new association to take effect.
843 unsigned int uapsd_max_sp_len
;
846 bool offchannel_ps_enabled
;
848 * PS can only be enabled when we have exactly one managed
849 * interface (and monitors) in PS, this then points there.
851 struct ieee80211_sub_if_data
*ps_sdata
;
852 struct work_struct dynamic_ps_enable_work
;
853 struct work_struct dynamic_ps_disable_work
;
854 struct timer_list dynamic_ps_timer
;
855 struct notifier_block network_latency_notifier
;
856 struct notifier_block ifa_notifier
;
859 * The dynamic ps timeout configured from user space via WEXT -
860 * this will override whatever chosen by mac80211 internally.
862 int dynamic_ps_forced_timeout
;
863 int dynamic_ps_user_timeout
;
864 bool disable_dynamic_ps
;
866 int user_power_level
; /* in dBm */
867 int power_constr_level
; /* in dBm */
869 enum ieee80211_smps_mode smps_mode
;
871 struct work_struct restart_work
;
873 #ifdef CONFIG_MAC80211_DEBUGFS
874 struct local_debugfsdentries
{
875 struct dentry
*rcdir
;
876 struct dentry
*stations
;
881 /* dummy netdev for use w/ NAPI */
882 struct net_device napi_dev
;
884 struct napi_struct napi
;
887 static inline struct ieee80211_sub_if_data
*
888 IEEE80211_DEV_TO_SUB_IF(struct net_device
*dev
)
890 return netdev_priv(dev
);
893 /* this struct represents 802.11n's RA/TID combination */
894 struct ieee80211_ra_tid
{
899 /* Parsed Information Elements */
900 struct ieee802_11_elems
{
904 /* pointers to IEs */
910 struct ieee80211_tim_ie
*tim
;
919 struct ieee80211_ht_cap
*ht_cap_elem
;
920 struct ieee80211_ht_info
*ht_info_elem
;
921 struct ieee80211_meshconf_ie
*mesh_config
;
927 struct ieee80211_rann_ie
*rann
;
931 u8
*quiet_elem
; /* first quite element */
934 /* length of them, respectively */
946 u8 ext_supp_rates_len
;
954 u8 ch_switch_elem_len
;
956 u8 pwr_constr_elem_len
;
958 u8 num_of_quiet_elem
; /* can be more the one */
962 static inline struct ieee80211_local
*hw_to_local(
963 struct ieee80211_hw
*hw
)
965 return container_of(hw
, struct ieee80211_local
, hw
);
968 static inline struct ieee80211_hw
*local_to_hw(
969 struct ieee80211_local
*local
)
975 static inline int ieee80211_bssid_match(const u8
*raddr
, const u8
*addr
)
977 return compare_ether_addr(raddr
, addr
) == 0 ||
978 is_broadcast_ether_addr(raddr
);
982 int ieee80211_hw_config(struct ieee80211_local
*local
, u32 changed
);
983 void ieee80211_tx_set_protected(struct ieee80211_tx_data
*tx
);
984 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data
*sdata
,
986 void ieee80211_configure_filter(struct ieee80211_local
*local
);
987 u32
ieee80211_reset_erp_info(struct ieee80211_sub_if_data
*sdata
);
989 extern bool ieee80211_disable_40mhz_24ghz
;
992 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data
*sdata
);
993 int ieee80211_mgd_auth(struct ieee80211_sub_if_data
*sdata
,
994 struct cfg80211_auth_request
*req
);
995 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data
*sdata
,
996 struct cfg80211_assoc_request
*req
);
997 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data
*sdata
,
998 struct cfg80211_deauth_request
*req
,
1000 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data
*sdata
,
1001 struct cfg80211_disassoc_request
*req
,
1003 void ieee80211_send_pspoll(struct ieee80211_local
*local
,
1004 struct ieee80211_sub_if_data
*sdata
);
1005 void ieee80211_recalc_ps(struct ieee80211_local
*local
, s32 latency
);
1006 int ieee80211_max_network_latency(struct notifier_block
*nb
,
1007 unsigned long data
, void *dummy
);
1008 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data
*sdata
);
1009 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data
*sdata
,
1010 struct ieee80211_channel_sw_ie
*sw_elem
,
1011 struct ieee80211_bss
*bss
,
1013 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data
*sdata
);
1014 void ieee80211_sta_restart(struct ieee80211_sub_if_data
*sdata
);
1015 void ieee80211_sta_work(struct ieee80211_sub_if_data
*sdata
);
1016 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1017 struct sk_buff
*skb
);
1020 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local
*local
);
1021 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data
*sdata
);
1022 struct sta_info
*ieee80211_ibss_add_sta(struct ieee80211_sub_if_data
*sdata
,
1023 u8
*bssid
, u8
*addr
, u32 supp_rates
,
1025 int ieee80211_ibss_join(struct ieee80211_sub_if_data
*sdata
,
1026 struct cfg80211_ibss_params
*params
);
1027 int ieee80211_ibss_leave(struct ieee80211_sub_if_data
*sdata
);
1028 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data
*sdata
);
1029 void ieee80211_ibss_restart(struct ieee80211_sub_if_data
*sdata
);
1030 void ieee80211_ibss_work(struct ieee80211_sub_if_data
*sdata
);
1031 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1032 struct sk_buff
*skb
);
1035 void ieee80211_mesh_work(struct ieee80211_sub_if_data
*sdata
);
1036 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1037 struct sk_buff
*skb
);
1039 /* scan/BSS handling */
1040 void ieee80211_scan_work(struct work_struct
*work
);
1041 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data
*sdata
,
1042 const u8
*ssid
, u8 ssid_len
,
1043 struct ieee80211_channel
*chan
);
1044 int ieee80211_request_scan(struct ieee80211_sub_if_data
*sdata
,
1045 struct cfg80211_scan_request
*req
);
1046 void ieee80211_scan_cancel(struct ieee80211_local
*local
);
1048 ieee80211_scan_rx(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
);
1050 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local
*local
);
1051 struct ieee80211_bss
*
1052 ieee80211_bss_info_update(struct ieee80211_local
*local
,
1053 struct ieee80211_rx_status
*rx_status
,
1054 struct ieee80211_mgmt
*mgmt
,
1056 struct ieee802_11_elems
*elems
,
1057 struct ieee80211_channel
*channel
,
1059 struct ieee80211_bss
*
1060 ieee80211_rx_bss_get(struct ieee80211_local
*local
, u8
*bssid
, int freq
,
1061 u8
*ssid
, u8 ssid_len
);
1062 void ieee80211_rx_bss_put(struct ieee80211_local
*local
,
1063 struct ieee80211_bss
*bss
);
1065 /* off-channel helpers */
1066 void ieee80211_offchannel_stop_beaconing(struct ieee80211_local
*local
);
1067 void ieee80211_offchannel_stop_station(struct ieee80211_local
*local
);
1068 void ieee80211_offchannel_return(struct ieee80211_local
*local
,
1069 bool enable_beaconing
);
1071 /* interface handling */
1072 int ieee80211_iface_init(void);
1073 void ieee80211_iface_exit(void);
1074 int ieee80211_if_add(struct ieee80211_local
*local
, const char *name
,
1075 struct net_device
**new_dev
, enum nl80211_iftype type
,
1076 struct vif_params
*params
);
1077 int ieee80211_if_change_type(struct ieee80211_sub_if_data
*sdata
,
1078 enum nl80211_iftype type
);
1079 void ieee80211_if_remove(struct ieee80211_sub_if_data
*sdata
);
1080 void ieee80211_remove_interfaces(struct ieee80211_local
*local
);
1081 u32
__ieee80211_recalc_idle(struct ieee80211_local
*local
);
1082 void ieee80211_recalc_idle(struct ieee80211_local
*local
);
1084 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data
*sdata
)
1086 return netif_running(sdata
->dev
);
1090 void ieee80211_clear_tx_pending(struct ieee80211_local
*local
);
1091 void ieee80211_tx_pending(unsigned long data
);
1092 netdev_tx_t
ieee80211_monitor_start_xmit(struct sk_buff
*skb
,
1093 struct net_device
*dev
);
1094 netdev_tx_t
ieee80211_subif_start_xmit(struct sk_buff
*skb
,
1095 struct net_device
*dev
);
1098 * radiotap header for status frames
1100 struct ieee80211_tx_status_rtap_hdr
{
1101 struct ieee80211_radiotap_header hdr
;
1103 u8 padding_for_rate
;
1110 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band
*sband
,
1111 struct ieee80211_ht_cap
*ht_cap_ie
,
1112 struct ieee80211_sta_ht_cap
*ht_cap
);
1113 void ieee80211_send_bar(struct ieee80211_sub_if_data
*sdata
, u8
*ra
, u16 tid
, u16 ssn
);
1114 void ieee80211_send_delba(struct ieee80211_sub_if_data
*sdata
,
1115 const u8
*da
, u16 tid
,
1116 u16 initiator
, u16 reason_code
);
1117 int ieee80211_send_smps_action(struct ieee80211_sub_if_data
*sdata
,
1118 enum ieee80211_smps_mode smps
, const u8
*da
,
1120 void ieee80211_request_smps_work(struct work_struct
*work
);
1122 void ___ieee80211_stop_rx_ba_session(struct sta_info
*sta
, u16 tid
,
1123 u16 initiator
, u16 reason
);
1124 void __ieee80211_stop_rx_ba_session(struct sta_info
*sta
, u16 tid
,
1125 u16 initiator
, u16 reason
);
1126 void ieee80211_sta_tear_down_BA_sessions(struct sta_info
*sta
);
1127 void ieee80211_process_delba(struct ieee80211_sub_if_data
*sdata
,
1128 struct sta_info
*sta
,
1129 struct ieee80211_mgmt
*mgmt
, size_t len
);
1130 void ieee80211_process_addba_resp(struct ieee80211_local
*local
,
1131 struct sta_info
*sta
,
1132 struct ieee80211_mgmt
*mgmt
,
1134 void ieee80211_process_addba_request(struct ieee80211_local
*local
,
1135 struct sta_info
*sta
,
1136 struct ieee80211_mgmt
*mgmt
,
1139 int __ieee80211_stop_tx_ba_session(struct sta_info
*sta
, u16 tid
,
1140 enum ieee80211_back_parties initiator
);
1141 int ___ieee80211_stop_tx_ba_session(struct sta_info
*sta
, u16 tid
,
1142 enum ieee80211_back_parties initiator
);
1143 void ieee80211_start_tx_ba_cb(struct ieee80211_vif
*vif
, u8
*ra
, u16 tid
);
1144 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif
*vif
, u8
*ra
, u8 tid
);
1145 void ieee80211_ba_session_work(struct work_struct
*work
);
1146 void ieee80211_tx_ba_session_handle_start(struct sta_info
*sta
, int tid
);
1147 void ieee80211_release_reorder_timeout(struct sta_info
*sta
, int tid
);
1149 /* Spectrum management */
1150 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data
*sdata
,
1151 struct ieee80211_mgmt
*mgmt
,
1154 /* Suspend/resume and hw reconfiguration */
1155 int ieee80211_reconfig(struct ieee80211_local
*local
);
1156 void ieee80211_stop_device(struct ieee80211_local
*local
);
1159 int __ieee80211_suspend(struct ieee80211_hw
*hw
);
1161 static inline int __ieee80211_resume(struct ieee80211_hw
*hw
)
1163 return ieee80211_reconfig(hw_to_local(hw
));
1166 static inline int __ieee80211_suspend(struct ieee80211_hw
*hw
)
1171 static inline int __ieee80211_resume(struct ieee80211_hw
*hw
)
1177 /* utility functions/constants */
1178 extern void *mac80211_wiphy_privid
; /* for wiphy privid */
1179 u8
*ieee80211_get_bssid(struct ieee80211_hdr
*hdr
, size_t len
,
1180 enum nl80211_iftype type
);
1181 int ieee80211_frame_duration(struct ieee80211_local
*local
, size_t len
,
1182 int rate
, int erp
, int short_preamble
);
1183 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data
*sdata
, int keyidx
,
1184 struct ieee80211_hdr
*hdr
, const u8
*tsc
,
1186 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data
*sdata
);
1187 void ieee80211_tx_skb(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
);
1188 void ieee802_11_parse_elems(u8
*start
, size_t len
,
1189 struct ieee802_11_elems
*elems
);
1190 u32
ieee802_11_parse_elems_crc(u8
*start
, size_t len
,
1191 struct ieee802_11_elems
*elems
,
1192 u64 filter
, u32 crc
);
1193 u32
ieee80211_mandatory_rates(struct ieee80211_local
*local
,
1194 enum ieee80211_band band
);
1196 void ieee80211_dynamic_ps_enable_work(struct work_struct
*work
);
1197 void ieee80211_dynamic_ps_disable_work(struct work_struct
*work
);
1198 void ieee80211_dynamic_ps_timer(unsigned long data
);
1199 void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
1200 struct ieee80211_sub_if_data
*sdata
,
1202 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data
*sdata
,
1203 struct ieee80211_hdr
*hdr
);
1204 void ieee80211_beacon_connection_loss_work(struct work_struct
*work
);
1206 void ieee80211_wake_queues_by_reason(struct ieee80211_hw
*hw
,
1207 enum queue_stop_reason reason
);
1208 void ieee80211_stop_queues_by_reason(struct ieee80211_hw
*hw
,
1209 enum queue_stop_reason reason
);
1210 void ieee80211_wake_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
1211 enum queue_stop_reason reason
);
1212 void ieee80211_stop_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
1213 enum queue_stop_reason reason
);
1214 void ieee80211_add_pending_skb(struct ieee80211_local
*local
,
1215 struct sk_buff
*skb
);
1216 int ieee80211_add_pending_skbs(struct ieee80211_local
*local
,
1217 struct sk_buff_head
*skbs
);
1219 void ieee80211_send_auth(struct ieee80211_sub_if_data
*sdata
,
1220 u16 transaction
, u16 auth_alg
,
1221 u8
*extra
, size_t extra_len
, const u8
*bssid
,
1222 const u8
*key
, u8 key_len
, u8 key_idx
);
1223 int ieee80211_build_preq_ies(struct ieee80211_local
*local
, u8
*buffer
,
1224 const u8
*ie
, size_t ie_len
,
1225 enum ieee80211_band band
);
1226 void ieee80211_send_probe_req(struct ieee80211_sub_if_data
*sdata
, u8
*dst
,
1227 const u8
*ssid
, size_t ssid_len
,
1228 const u8
*ie
, size_t ie_len
);
1230 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data
*sdata
,
1231 const size_t supp_rates_len
,
1232 const u8
*supp_rates
);
1233 u32
ieee80211_sta_get_rates(struct ieee80211_local
*local
,
1234 struct ieee802_11_elems
*elems
,
1235 enum ieee80211_band band
);
1236 int __ieee80211_request_smps(struct ieee80211_sub_if_data
*sdata
,
1237 enum ieee80211_smps_mode smps_mode
);
1238 void ieee80211_recalc_smps(struct ieee80211_local
*local
,
1239 struct ieee80211_sub_if_data
*forsdata
);
1241 size_t ieee80211_ie_split(const u8
*ies
, size_t ielen
,
1242 const u8
*ids
, int n_ids
, size_t offset
);
1243 size_t ieee80211_ie_split_vendor(const u8
*ies
, size_t ielen
, size_t offset
);
1245 /* internal work items */
1246 void ieee80211_work_init(struct ieee80211_local
*local
);
1247 void ieee80211_add_work(struct ieee80211_work
*wk
);
1248 void free_work(struct ieee80211_work
*wk
);
1249 void ieee80211_work_purge(struct ieee80211_sub_if_data
*sdata
);
1250 ieee80211_rx_result
ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data
*sdata
,
1251 struct sk_buff
*skb
);
1252 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data
*sdata
,
1253 struct ieee80211_channel
*chan
,
1254 enum nl80211_channel_type channel_type
,
1255 unsigned int duration
, u64
*cookie
);
1256 int ieee80211_wk_cancel_remain_on_channel(
1257 struct ieee80211_sub_if_data
*sdata
, u64 cookie
);
1259 /* channel management */
1260 enum ieee80211_chan_mode
{
1261 CHAN_MODE_UNDEFINED
,
1266 enum ieee80211_chan_mode
1267 ieee80211_get_channel_mode(struct ieee80211_local
*local
,
1268 struct ieee80211_sub_if_data
*ignore
);
1269 bool ieee80211_set_channel_type(struct ieee80211_local
*local
,
1270 struct ieee80211_sub_if_data
*sdata
,
1271 enum nl80211_channel_type chantype
);
1273 #ifdef CONFIG_MAC80211_NOINLINE
1274 #define debug_noinline noinline
1276 #define debug_noinline
1279 #endif /* IEEE80211_I_H */