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 /* only add flags here that do not change with subframes of an aMPDU */
175 struct ieee80211_rx_data
{
177 struct ieee80211_local
*local
;
178 struct ieee80211_sub_if_data
*sdata
;
179 struct sta_info
*sta
;
180 struct ieee80211_key
*key
;
190 int head_len
, tail_len
;
194 struct ieee80211_if_ap
{
195 struct beacon_data
*beacon
;
197 struct list_head vlans
;
199 /* yes, this looks ugly, but guarantees that we can later use
201 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
202 u8 tim
[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID
+ 1)];
203 struct sk_buff_head ps_bc_buf
;
204 atomic_t num_sta_ps
; /* number of stations in PS mode */
208 struct ieee80211_if_wds
{
209 struct sta_info
*sta
;
210 u8 remote_addr
[ETH_ALEN
];
213 struct ieee80211_if_vlan
{
214 struct list_head list
;
216 /* used for all tx if the VLAN is configured to 4-addr mode */
217 struct sta_info
*sta
;
221 __u32 fwded_mcast
; /* Mesh forwarded multicast frames */
222 __u32 fwded_unicast
; /* Mesh forwarded unicast frames */
223 __u32 fwded_frames
; /* Mesh total forwarded frames */
224 __u32 dropped_frames_ttl
; /* Not transmitted since mesh_ttl == 0*/
225 __u32 dropped_frames_no_route
; /* Not transmitted, no route found */
226 atomic_t estab_plinks
;
229 #define PREQ_Q_F_START 0x1
230 #define PREQ_Q_F_REFRESH 0x2
231 struct mesh_preq_queue
{
232 struct list_head list
;
237 enum ieee80211_work_type
{
238 IEEE80211_WORK_ABORT
,
239 IEEE80211_WORK_DIRECT_PROBE
,
241 IEEE80211_WORK_ASSOC
,
242 IEEE80211_WORK_REMAIN_ON_CHANNEL
,
246 * enum work_done_result - indicates what to do after work was done
248 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
249 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
250 * should be requeued.
252 enum work_done_result
{
257 struct ieee80211_work
{
258 struct list_head list
;
260 struct rcu_head rcu_head
;
262 struct ieee80211_sub_if_data
*sdata
;
264 enum work_done_result (*done
)(struct ieee80211_work
*wk
,
265 struct sk_buff
*skb
);
267 struct ieee80211_channel
*chan
;
268 enum nl80211_channel_type chan_type
;
270 unsigned long timeout
;
271 enum ieee80211_work_type type
;
273 u8 filter_ta
[ETH_ALEN
];
280 u16 algorithm
, transaction
;
281 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
283 u8 key
[WLAN_KEY_LEN_WEP104
];
288 struct cfg80211_bss
*bss
;
289 const u8
*supp_rates
;
290 const u8
*ht_information_ie
;
291 enum ieee80211_smps_mode smps
;
294 u8 prev_bssid
[ETH_ALEN
];
295 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
298 bool wmm_used
, use_11n
, uapsd_used
;
310 /* flags used in struct ieee80211_if_managed.flags */
311 enum ieee80211_sta_flags
{
312 IEEE80211_STA_BEACON_POLL
= BIT(0),
313 IEEE80211_STA_CONNECTION_POLL
= BIT(1),
314 IEEE80211_STA_CONTROL_PORT
= BIT(2),
315 IEEE80211_STA_DISABLE_11N
= BIT(4),
316 IEEE80211_STA_CSA_RECEIVED
= BIT(5),
317 IEEE80211_STA_MFP_ENABLED
= BIT(6),
318 IEEE80211_STA_UAPSD_ENABLED
= BIT(7),
319 IEEE80211_STA_NULLFUNC_ACKED
= BIT(8),
320 IEEE80211_STA_RESET_SIGNAL_AVE
= BIT(9),
323 struct ieee80211_if_managed
{
324 struct timer_list timer
;
325 struct timer_list conn_mon_timer
;
326 struct timer_list bcn_mon_timer
;
327 struct timer_list chswitch_timer
;
328 struct work_struct monitor_work
;
329 struct work_struct chswitch_work
;
330 struct work_struct beacon_connection_loss_work
;
332 unsigned long probe_timeout
;
333 int probe_send_count
;
336 struct cfg80211_bss
*associated
;
342 unsigned long timers_running
; /* used for quiesce/restart */
343 bool powersave
; /* powersave requested for this iface */
344 enum ieee80211_smps_mode req_smps
, /* requested smps mode */
345 ap_smps
; /* smps mode AP thinks we're in */
352 IEEE80211_MFP_DISABLED
,
353 IEEE80211_MFP_OPTIONAL
,
354 IEEE80211_MFP_REQUIRED
355 } mfp
; /* management frame protection */
357 int wmm_last_param_set
;
361 /* Signal strength from the last Beacon frame in the current BSS. */
362 int last_beacon_signal
;
365 * Weighted average of the signal strength from Beacon frames in the
366 * current BSS. This is in units of 1/16 of the signal unit to maintain
367 * accuracy and to speed up calculations, i.e., the value need to be
368 * divided by 16 to get the actual value.
370 int ave_beacon_signal
;
373 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
374 * that triggered a cqm event. 0 indicates that no event has been
375 * generated for the current association.
377 int last_cqm_event_signal
;
380 enum ieee80211_ibss_request
{
381 IEEE80211_IBSS_REQ_RUN
= 0,
384 struct ieee80211_if_ibss
{
385 struct timer_list timer
;
387 unsigned long request
;
388 unsigned long last_scan_completed
;
397 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
400 struct ieee80211_channel
*channel
;
402 unsigned long ibss_join_req
;
403 /* probe response/beacon for IBSS */
404 struct sk_buff
*presp
, *skb
;
407 IEEE80211_IBSS_MLME_SEARCH
,
408 IEEE80211_IBSS_MLME_JOINED
,
412 struct ieee80211_if_mesh
{
413 struct timer_list housekeeping_timer
;
414 struct timer_list mesh_path_timer
;
415 struct timer_list mesh_path_root_timer
;
417 unsigned long timers_running
;
419 unsigned long wrkq_flags
;
421 u8 mesh_id
[IEEE80211_MAX_MESH_ID_LEN
];
423 /* Active Path Selection Protocol Identifier */
425 /* Active Path Selection Metric Identifier */
427 /* Congestion Control Mode Identifier */
429 /* Synchronization Protocol Identifier */
431 /* Authentication Protocol Identifier */
433 /* Local mesh Sequence Number */
435 /* Last used PREQ ID */
438 /* Timestamp of last SN update */
439 unsigned long last_sn_update
;
440 /* Timestamp of last SN sent */
441 unsigned long last_preq
;
442 struct mesh_rmc
*rmc
;
443 spinlock_t mesh_preq_queue_lock
;
444 struct mesh_preq_queue preq_queue
;
446 struct mesh_stats mshstats
;
447 struct mesh_config mshcfg
;
449 bool accepting_plinks
;
452 #ifdef CONFIG_MAC80211_MESH
453 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
454 do { (msh)->mshstats.name++; } while (0)
456 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
461 * enum ieee80211_sub_if_data_flags - virtual interface flags
463 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
464 * @IEEE80211_SDATA_PROMISC: interface is promisc
465 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
466 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
467 * associated stations and deliver multicast frames both
468 * back to wireless media and to the local net stack.
470 enum ieee80211_sub_if_data_flags
{
471 IEEE80211_SDATA_ALLMULTI
= BIT(0),
472 IEEE80211_SDATA_PROMISC
= BIT(1),
473 IEEE80211_SDATA_OPERATING_GMODE
= BIT(2),
474 IEEE80211_SDATA_DONT_BRIDGE_PACKETS
= BIT(3),
477 struct ieee80211_sub_if_data
{
478 struct list_head list
;
480 struct wireless_dev wdev
;
483 struct list_head key_list
;
485 struct net_device
*dev
;
486 struct ieee80211_local
*local
;
490 int drop_unencrypted
;
495 * keep track of whether the HT opmode (stored in
496 * vif.bss_info.ht_operation_mode) is valid.
498 bool ht_opmode_valid
;
500 /* Fragment table for host-based reassembly */
501 struct ieee80211_fragment_entry fragments
[IEEE80211_FRAGMENT_MAX
];
502 unsigned int fragment_next
;
504 #define NUM_DEFAULT_KEYS 4
505 #define NUM_DEFAULT_MGMT_KEYS 2
506 struct ieee80211_key
*keys
[NUM_DEFAULT_KEYS
+ NUM_DEFAULT_MGMT_KEYS
];
507 struct ieee80211_key
*default_key
;
508 struct ieee80211_key
*default_mgmt_key
;
512 struct work_struct work
;
513 struct sk_buff_head skb_queue
;
516 * AP this belongs to: self in AP mode and
517 * corresponding AP in VLAN mode, NULL for
518 * all others (might be needed later in IBSS)
520 struct ieee80211_if_ap
*bss
;
522 /* bitmap of allowed (non-MCS) rate indexes for rate control */
523 u32 rc_rateidx_mask
[IEEE80211_NUM_BANDS
];
526 struct ieee80211_if_ap ap
;
527 struct ieee80211_if_wds wds
;
528 struct ieee80211_if_vlan vlan
;
529 struct ieee80211_if_managed mgd
;
530 struct ieee80211_if_ibss ibss
;
531 #ifdef CONFIG_MAC80211_MESH
532 struct ieee80211_if_mesh mesh
;
537 #ifdef CONFIG_MAC80211_DEBUGFS
540 struct dentry
*default_key
;
541 struct dentry
*default_mgmt_key
;
544 /* must be last, dynamically sized area in this! */
545 struct ieee80211_vif vif
;
549 struct ieee80211_sub_if_data
*vif_to_sdata(struct ieee80211_vif
*p
)
551 return container_of(p
, struct ieee80211_sub_if_data
, vif
);
555 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data
*sdata
,
556 u8 mesh_id_len
, u8
*mesh_id
)
558 #ifdef CONFIG_MAC80211_MESH
559 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
560 ifmsh
->mesh_id_len
= mesh_id_len
;
561 memcpy(ifmsh
->mesh_id
, mesh_id
, mesh_id_len
);
568 IEEE80211_RX_MSG
= 1,
569 IEEE80211_TX_STATUS_MSG
= 2,
570 IEEE80211_DELBA_MSG
= 3,
571 IEEE80211_ADDBA_MSG
= 4,
574 enum queue_stop_reason
{
575 IEEE80211_QUEUE_STOP_REASON_DRIVER
,
576 IEEE80211_QUEUE_STOP_REASON_PS
,
577 IEEE80211_QUEUE_STOP_REASON_CSA
,
578 IEEE80211_QUEUE_STOP_REASON_AGGREGATION
,
579 IEEE80211_QUEUE_STOP_REASON_SUSPEND
,
580 IEEE80211_QUEUE_STOP_REASON_SKB_ADD
,
584 * mac80211 scan flags - currently active scan mode
586 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
587 * well be on the operating channel
588 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
589 * determine if we are on the operating channel or not
590 * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
591 * gets only set in conjunction with SCAN_SW_SCANNING
600 * enum mac80211_scan_state - scan state machine states
602 * @SCAN_DECISION: Main entry point to the scan state machine, this state
603 * determines if we should keep on scanning or switch back to the
605 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
606 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
607 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
608 * about us leaving the channel and stop all associated STA interfaces
609 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
610 * AP about us being back and restart all associated STA interfaces
612 enum mac80211_scan_state
{
616 SCAN_LEAVE_OPER_CHANNEL
,
617 SCAN_ENTER_OPER_CHANNEL
,
620 struct ieee80211_local
{
621 /* embed the driver visible part.
622 * don't cast (use the static inlines below), but we keep
623 * it first anyway so they become a no-op */
624 struct ieee80211_hw hw
;
626 const struct ieee80211_ops
*ops
;
629 * work stuff, potentially off-channel (in the future)
631 struct mutex work_mtx
;
632 struct list_head work_list
;
633 struct timer_list work_timer
;
634 struct work_struct work_work
;
635 struct sk_buff_head work_skb_queue
;
638 * private workqueue to mac80211. mac80211 makes this accessible
639 * via ieee80211_queue_work()
641 struct workqueue_struct
*workqueue
;
643 unsigned long queue_stop_reasons
[IEEE80211_MAX_QUEUES
];
644 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
645 spinlock_t queue_stop_reason_lock
;
648 int monitors
, cooked_mntrs
;
649 /* number of interfaces with corresponding FIF_ flags */
650 int fif_fcsfail
, fif_plcpfail
, fif_control
, fif_other_bss
, fif_pspoll
;
651 unsigned int filter_flags
; /* FIF_* */
653 /* protects the aggregated multicast list and filter calls */
654 spinlock_t filter_lock
;
656 /* used for uploading changed mc list */
657 struct work_struct reconfig_filter
;
659 /* used to reconfigure hardware SM PS */
660 struct work_struct recalc_smps
;
662 /* aggregated multicast list */
663 struct netdev_hw_addr_list mc_list
;
665 bool tim_in_locked_section
; /* see ieee80211_beacon_get() */
668 * suspended is true if we finished all the suspend _and_ we have
669 * not yet come up from resume. This is to be used by mac80211
670 * to ensure driver sanity during suspend and mac80211's own
671 * sanity. It can eventually be used for WoW as well.
676 * Resuming is true while suspended, but when we're reprogramming the
677 * hardware -- at that time it's allowed to use ieee80211_queue_work()
678 * again even though some other parts of the stack are still suspended
679 * and we still drop received frames to avoid waking the stack.
684 * quiescing is true during the suspend process _only_ to
685 * ease timer cancelling etc.
689 /* device is started */
692 int tx_headroom
; /* required headroom for hardware/radiotap */
694 /* Tasklet and skb queue to process calls from IRQ mode. All frames
695 * added to skb_queue will be processed, but frames in
696 * skb_queue_unreliable may be dropped if the total length of these
697 * queues increases over the limit. */
698 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
699 struct tasklet_struct tasklet
;
700 struct sk_buff_head skb_queue
;
701 struct sk_buff_head skb_queue_unreliable
;
705 * The mutex only protects the list and counter,
706 * reads are done in RCU.
707 * Additionally, the lock protects the hash table,
708 * the pending list and each BSS's TIM bitmap.
710 struct mutex sta_mtx
;
712 unsigned long num_sta
;
713 struct list_head sta_list
, sta_pending_list
;
714 struct sta_info
*sta_hash
[STA_HASH_SIZE
];
715 struct timer_list sta_cleanup
;
716 struct work_struct sta_finish_work
;
719 struct sk_buff_head pending
[IEEE80211_MAX_QUEUES
];
720 struct tasklet_struct tx_pending_tasklet
;
723 * This lock is used to prevent concurrent A-MPDU
724 * session start/stop processing, this thus also
725 * synchronises the ->ampdu_action() callback to
726 * drivers and limits it to one at a time.
728 spinlock_t ampdu_lock
;
730 /* number of interfaces with corresponding IFF_ flags */
731 atomic_t iff_allmultis
, iff_promiscs
;
733 struct rate_control_ref
*rate_ctrl
;
735 struct crypto_blkcipher
*wep_tx_tfm
;
736 struct crypto_blkcipher
*wep_rx_tfm
;
740 struct list_head interfaces
;
741 struct mutex iflist_mtx
;
744 * Key mutex, protects sdata's key_list and sta_info's
745 * key pointers (write access, they're RCU.)
747 struct mutex key_mtx
;
750 /* Scanning and BSS list */
751 struct mutex scan_mtx
;
752 unsigned long scanning
;
753 struct cfg80211_ssid scan_ssid
;
754 struct cfg80211_scan_request
*int_scan_req
;
755 struct cfg80211_scan_request
*scan_req
, *hw_scan_req
;
756 struct ieee80211_channel
*scan_channel
;
757 enum ieee80211_band hw_scan_band
;
758 int scan_channel_idx
;
761 unsigned long leave_oper_channel_time
;
762 enum mac80211_scan_state next_scan_state
;
763 struct delayed_work scan_work
;
764 struct ieee80211_sub_if_data
*scan_sdata
;
765 enum nl80211_channel_type _oper_channel_type
;
766 struct ieee80211_channel
*oper_channel
, *csa_channel
;
768 /* Temporary remain-on-channel for off-channel operations */
769 struct ieee80211_channel
*tmp_channel
;
770 enum nl80211_channel_type tmp_channel_type
;
773 /* dot11CountersTable */
774 u32 dot11TransmittedFragmentCount
;
775 u32 dot11MulticastTransmittedFrameCount
;
776 u32 dot11FailedCount
;
778 u32 dot11MultipleRetryCount
;
779 u32 dot11FrameDuplicateCount
;
780 u32 dot11ReceivedFragmentCount
;
781 u32 dot11MulticastReceivedFrameCount
;
782 u32 dot11TransmittedFrameCount
;
784 #ifdef CONFIG_MAC80211_LEDS
785 int tx_led_counter
, rx_led_counter
;
786 struct led_trigger
*tx_led
, *rx_led
, *assoc_led
, *radio_led
;
787 char tx_led_name
[32], rx_led_name
[32],
788 assoc_led_name
[32], radio_led_name
[32];
791 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
792 /* TX/RX handler statistics */
793 unsigned int tx_handlers_drop
;
794 unsigned int tx_handlers_queued
;
795 unsigned int tx_handlers_drop_unencrypted
;
796 unsigned int tx_handlers_drop_fragment
;
797 unsigned int tx_handlers_drop_wep
;
798 unsigned int tx_handlers_drop_not_assoc
;
799 unsigned int tx_handlers_drop_unauth_port
;
800 unsigned int rx_handlers_drop
;
801 unsigned int rx_handlers_queued
;
802 unsigned int rx_handlers_drop_nullfunc
;
803 unsigned int rx_handlers_drop_defrag
;
804 unsigned int rx_handlers_drop_short
;
805 unsigned int rx_handlers_drop_passive_scan
;
806 unsigned int tx_expand_skb_head
;
807 unsigned int tx_expand_skb_head_cloned
;
808 unsigned int rx_expand_skb_head
;
809 unsigned int rx_expand_skb_head2
;
810 unsigned int rx_handlers_fragments
;
811 unsigned int tx_status_drop
;
812 #define I802_DEBUG_INC(c) (c)++
813 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
814 #define I802_DEBUG_INC(c) do { } while (0)
815 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
818 int total_ps_buffered
; /* total number of all buffered unicast and
819 * multicast packets for power saving stations
821 int wifi_wme_noack_test
;
822 unsigned int wmm_acm
; /* bit field of ACM bits (BIT(802.1D tag)) */
825 * Bitmask of enabled u-apsd queues,
826 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
829 unsigned int uapsd_queues
;
832 * Maximum number of buffered frames AP can deliver during a
833 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
834 * Needs a new association to take effect.
836 unsigned int uapsd_max_sp_len
;
839 bool offchannel_ps_enabled
;
841 * PS can only be enabled when we have exactly one managed
842 * interface (and monitors) in PS, this then points there.
844 struct ieee80211_sub_if_data
*ps_sdata
;
845 struct work_struct dynamic_ps_enable_work
;
846 struct work_struct dynamic_ps_disable_work
;
847 struct timer_list dynamic_ps_timer
;
848 struct notifier_block network_latency_notifier
;
849 struct notifier_block ifa_notifier
;
851 int user_power_level
; /* in dBm */
852 int power_constr_level
; /* in dBm */
854 enum ieee80211_smps_mode smps_mode
;
856 struct work_struct restart_work
;
858 #ifdef CONFIG_MAC80211_DEBUGFS
859 struct local_debugfsdentries
{
860 struct dentry
*rcdir
;
861 struct dentry
*stations
;
867 static inline struct ieee80211_sub_if_data
*
868 IEEE80211_DEV_TO_SUB_IF(struct net_device
*dev
)
870 return netdev_priv(dev
);
873 /* this struct represents 802.11n's RA/TID combination along with our vif */
874 struct ieee80211_ra_tid
{
875 struct ieee80211_vif
*vif
;
880 /* Parsed Information Elements */
881 struct ieee802_11_elems
{
885 /* pointers to IEs */
891 struct ieee80211_tim_ie
*tim
;
900 struct ieee80211_ht_cap
*ht_cap_elem
;
901 struct ieee80211_ht_info
*ht_info_elem
;
902 struct ieee80211_meshconf_ie
*mesh_config
;
908 struct ieee80211_rann_ie
*rann
;
912 u8
*quiet_elem
; /* first quite element */
915 /* length of them, respectively */
927 u8 ext_supp_rates_len
;
935 u8 ch_switch_elem_len
;
937 u8 pwr_constr_elem_len
;
939 u8 num_of_quiet_elem
; /* can be more the one */
943 static inline struct ieee80211_local
*hw_to_local(
944 struct ieee80211_hw
*hw
)
946 return container_of(hw
, struct ieee80211_local
, hw
);
949 static inline struct ieee80211_hw
*local_to_hw(
950 struct ieee80211_local
*local
)
956 static inline int ieee80211_bssid_match(const u8
*raddr
, const u8
*addr
)
958 return compare_ether_addr(raddr
, addr
) == 0 ||
959 is_broadcast_ether_addr(raddr
);
963 int ieee80211_hw_config(struct ieee80211_local
*local
, u32 changed
);
964 void ieee80211_tx_set_protected(struct ieee80211_tx_data
*tx
);
965 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data
*sdata
,
967 void ieee80211_configure_filter(struct ieee80211_local
*local
);
968 u32
ieee80211_reset_erp_info(struct ieee80211_sub_if_data
*sdata
);
970 extern bool ieee80211_disable_40mhz_24ghz
;
973 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data
*sdata
);
974 int ieee80211_mgd_auth(struct ieee80211_sub_if_data
*sdata
,
975 struct cfg80211_auth_request
*req
);
976 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data
*sdata
,
977 struct cfg80211_assoc_request
*req
);
978 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data
*sdata
,
979 struct cfg80211_deauth_request
*req
,
981 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data
*sdata
,
982 struct cfg80211_disassoc_request
*req
,
984 ieee80211_rx_result
ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data
*sdata
,
985 struct sk_buff
*skb
);
986 void ieee80211_send_pspoll(struct ieee80211_local
*local
,
987 struct ieee80211_sub_if_data
*sdata
);
988 void ieee80211_recalc_ps(struct ieee80211_local
*local
, s32 latency
);
989 int ieee80211_max_network_latency(struct notifier_block
*nb
,
990 unsigned long data
, void *dummy
);
991 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data
*sdata
);
992 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data
*sdata
,
993 struct ieee80211_channel_sw_ie
*sw_elem
,
994 struct ieee80211_bss
*bss
,
996 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data
*sdata
);
997 void ieee80211_sta_restart(struct ieee80211_sub_if_data
*sdata
);
1000 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local
*local
);
1001 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data
*sdata
);
1003 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
);
1004 struct sta_info
*ieee80211_ibss_add_sta(struct ieee80211_sub_if_data
*sdata
,
1005 u8
*bssid
, u8
*addr
, u32 supp_rates
,
1007 int ieee80211_ibss_join(struct ieee80211_sub_if_data
*sdata
,
1008 struct cfg80211_ibss_params
*params
);
1009 int ieee80211_ibss_leave(struct ieee80211_sub_if_data
*sdata
);
1010 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data
*sdata
);
1011 void ieee80211_ibss_restart(struct ieee80211_sub_if_data
*sdata
);
1013 /* scan/BSS handling */
1014 void ieee80211_scan_work(struct work_struct
*work
);
1015 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data
*sdata
,
1016 const u8
*ssid
, u8 ssid_len
,
1017 struct ieee80211_channel
*chan
);
1018 int ieee80211_request_scan(struct ieee80211_sub_if_data
*sdata
,
1019 struct cfg80211_scan_request
*req
);
1020 void ieee80211_scan_cancel(struct ieee80211_local
*local
);
1022 ieee80211_scan_rx(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
);
1024 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local
*local
);
1025 struct ieee80211_bss
*
1026 ieee80211_bss_info_update(struct ieee80211_local
*local
,
1027 struct ieee80211_rx_status
*rx_status
,
1028 struct ieee80211_mgmt
*mgmt
,
1030 struct ieee802_11_elems
*elems
,
1031 struct ieee80211_channel
*channel
,
1033 struct ieee80211_bss
*
1034 ieee80211_rx_bss_get(struct ieee80211_local
*local
, u8
*bssid
, int freq
,
1035 u8
*ssid
, u8 ssid_len
);
1036 void ieee80211_rx_bss_put(struct ieee80211_local
*local
,
1037 struct ieee80211_bss
*bss
);
1039 /* off-channel helpers */
1040 void ieee80211_offchannel_stop_beaconing(struct ieee80211_local
*local
);
1041 void ieee80211_offchannel_stop_station(struct ieee80211_local
*local
);
1042 void ieee80211_offchannel_return(struct ieee80211_local
*local
,
1043 bool enable_beaconing
);
1045 /* interface handling */
1046 int ieee80211_iface_init(void);
1047 void ieee80211_iface_exit(void);
1048 int ieee80211_if_add(struct ieee80211_local
*local
, const char *name
,
1049 struct net_device
**new_dev
, enum nl80211_iftype type
,
1050 struct vif_params
*params
);
1051 int ieee80211_if_change_type(struct ieee80211_sub_if_data
*sdata
,
1052 enum nl80211_iftype type
);
1053 void ieee80211_if_remove(struct ieee80211_sub_if_data
*sdata
);
1054 void ieee80211_remove_interfaces(struct ieee80211_local
*local
);
1055 u32
__ieee80211_recalc_idle(struct ieee80211_local
*local
);
1056 void ieee80211_recalc_idle(struct ieee80211_local
*local
);
1058 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data
*sdata
)
1060 return netif_running(sdata
->dev
);
1064 void ieee80211_clear_tx_pending(struct ieee80211_local
*local
);
1065 void ieee80211_tx_pending(unsigned long data
);
1066 netdev_tx_t
ieee80211_monitor_start_xmit(struct sk_buff
*skb
,
1067 struct net_device
*dev
);
1068 netdev_tx_t
ieee80211_subif_start_xmit(struct sk_buff
*skb
,
1069 struct net_device
*dev
);
1072 * radiotap header for status frames
1074 struct ieee80211_tx_status_rtap_hdr
{
1075 struct ieee80211_radiotap_header hdr
;
1077 u8 padding_for_rate
;
1080 } __attribute__ ((packed
));
1084 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band
*sband
,
1085 struct ieee80211_ht_cap
*ht_cap_ie
,
1086 struct ieee80211_sta_ht_cap
*ht_cap
);
1087 void ieee80211_send_bar(struct ieee80211_sub_if_data
*sdata
, u8
*ra
, u16 tid
, u16 ssn
);
1088 void ieee80211_send_delba(struct ieee80211_sub_if_data
*sdata
,
1089 const u8
*da
, u16 tid
,
1090 u16 initiator
, u16 reason_code
);
1091 int ieee80211_send_smps_action(struct ieee80211_sub_if_data
*sdata
,
1092 enum ieee80211_smps_mode smps
, const u8
*da
,
1095 void __ieee80211_stop_rx_ba_session(struct sta_info
*sta
, u16 tid
,
1096 u16 initiator
, u16 reason
);
1097 void ieee80211_sta_tear_down_BA_sessions(struct sta_info
*sta
);
1098 void ieee80211_process_delba(struct ieee80211_sub_if_data
*sdata
,
1099 struct sta_info
*sta
,
1100 struct ieee80211_mgmt
*mgmt
, size_t len
);
1101 void ieee80211_process_addba_resp(struct ieee80211_local
*local
,
1102 struct sta_info
*sta
,
1103 struct ieee80211_mgmt
*mgmt
,
1105 void ieee80211_process_addba_request(struct ieee80211_local
*local
,
1106 struct sta_info
*sta
,
1107 struct ieee80211_mgmt
*mgmt
,
1110 int __ieee80211_stop_tx_ba_session(struct sta_info
*sta
, u16 tid
,
1111 enum ieee80211_back_parties initiator
);
1112 int ___ieee80211_stop_tx_ba_session(struct sta_info
*sta
, u16 tid
,
1113 enum ieee80211_back_parties initiator
);
1115 /* Spectrum management */
1116 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data
*sdata
,
1117 struct ieee80211_mgmt
*mgmt
,
1120 /* Suspend/resume and hw reconfiguration */
1121 int ieee80211_reconfig(struct ieee80211_local
*local
);
1122 void ieee80211_stop_device(struct ieee80211_local
*local
);
1125 int __ieee80211_suspend(struct ieee80211_hw
*hw
);
1127 static inline int __ieee80211_resume(struct ieee80211_hw
*hw
)
1129 return ieee80211_reconfig(hw_to_local(hw
));
1132 static inline int __ieee80211_suspend(struct ieee80211_hw
*hw
)
1137 static inline int __ieee80211_resume(struct ieee80211_hw
*hw
)
1143 /* utility functions/constants */
1144 extern void *mac80211_wiphy_privid
; /* for wiphy privid */
1145 u8
*ieee80211_get_bssid(struct ieee80211_hdr
*hdr
, size_t len
,
1146 enum nl80211_iftype type
);
1147 int ieee80211_frame_duration(struct ieee80211_local
*local
, size_t len
,
1148 int rate
, int erp
, int short_preamble
);
1149 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data
*sdata
, int keyidx
,
1150 struct ieee80211_hdr
*hdr
, const u8
*tsc
,
1152 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data
*sdata
);
1153 void ieee80211_tx_skb(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
);
1154 void ieee802_11_parse_elems(u8
*start
, size_t len
,
1155 struct ieee802_11_elems
*elems
);
1156 u32
ieee802_11_parse_elems_crc(u8
*start
, size_t len
,
1157 struct ieee802_11_elems
*elems
,
1158 u64 filter
, u32 crc
);
1159 u32
ieee80211_mandatory_rates(struct ieee80211_local
*local
,
1160 enum ieee80211_band band
);
1162 void ieee80211_dynamic_ps_enable_work(struct work_struct
*work
);
1163 void ieee80211_dynamic_ps_disable_work(struct work_struct
*work
);
1164 void ieee80211_dynamic_ps_timer(unsigned long data
);
1165 void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
1166 struct ieee80211_sub_if_data
*sdata
,
1168 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data
*sdata
,
1169 struct ieee80211_hdr
*hdr
);
1170 void ieee80211_beacon_connection_loss_work(struct work_struct
*work
);
1172 void ieee80211_wake_queues_by_reason(struct ieee80211_hw
*hw
,
1173 enum queue_stop_reason reason
);
1174 void ieee80211_stop_queues_by_reason(struct ieee80211_hw
*hw
,
1175 enum queue_stop_reason reason
);
1176 void ieee80211_wake_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
1177 enum queue_stop_reason reason
);
1178 void ieee80211_stop_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
1179 enum queue_stop_reason reason
);
1180 void ieee80211_add_pending_skb(struct ieee80211_local
*local
,
1181 struct sk_buff
*skb
);
1182 int ieee80211_add_pending_skbs(struct ieee80211_local
*local
,
1183 struct sk_buff_head
*skbs
);
1185 void ieee80211_send_auth(struct ieee80211_sub_if_data
*sdata
,
1186 u16 transaction
, u16 auth_alg
,
1187 u8
*extra
, size_t extra_len
, const u8
*bssid
,
1188 const u8
*key
, u8 key_len
, u8 key_idx
);
1189 int ieee80211_build_preq_ies(struct ieee80211_local
*local
, u8
*buffer
,
1190 const u8
*ie
, size_t ie_len
,
1191 enum ieee80211_band band
);
1192 void ieee80211_send_probe_req(struct ieee80211_sub_if_data
*sdata
, u8
*dst
,
1193 const u8
*ssid
, size_t ssid_len
,
1194 const u8
*ie
, size_t ie_len
);
1196 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data
*sdata
,
1197 const size_t supp_rates_len
,
1198 const u8
*supp_rates
);
1199 u32
ieee80211_sta_get_rates(struct ieee80211_local
*local
,
1200 struct ieee802_11_elems
*elems
,
1201 enum ieee80211_band band
);
1202 int __ieee80211_request_smps(struct ieee80211_sub_if_data
*sdata
,
1203 enum ieee80211_smps_mode smps_mode
);
1204 void ieee80211_recalc_smps(struct ieee80211_local
*local
,
1205 struct ieee80211_sub_if_data
*forsdata
);
1207 size_t ieee80211_ie_split(const u8
*ies
, size_t ielen
,
1208 const u8
*ids
, int n_ids
, size_t offset
);
1209 size_t ieee80211_ie_split_vendor(const u8
*ies
, size_t ielen
, size_t offset
);
1211 /* internal work items */
1212 void ieee80211_work_init(struct ieee80211_local
*local
);
1213 void ieee80211_add_work(struct ieee80211_work
*wk
);
1214 void free_work(struct ieee80211_work
*wk
);
1215 void ieee80211_work_purge(struct ieee80211_sub_if_data
*sdata
);
1216 ieee80211_rx_result
ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data
*sdata
,
1217 struct sk_buff
*skb
);
1218 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data
*sdata
,
1219 struct ieee80211_channel
*chan
,
1220 enum nl80211_channel_type channel_type
,
1221 unsigned int duration
, u64
*cookie
);
1222 int ieee80211_wk_cancel_remain_on_channel(
1223 struct ieee80211_sub_if_data
*sdata
, u64 cookie
);
1225 /* channel management */
1226 enum ieee80211_chan_mode
{
1227 CHAN_MODE_UNDEFINED
,
1232 enum ieee80211_chan_mode
1233 ieee80211_get_channel_mode(struct ieee80211_local
*local
,
1234 struct ieee80211_sub_if_data
*ignore
);
1235 bool ieee80211_set_channel_type(struct ieee80211_local
*local
,
1236 struct ieee80211_sub_if_data
*sdata
,
1237 enum nl80211_channel_type chantype
);
1239 #ifdef CONFIG_MAC80211_NOINLINE
1240 #define debug_noinline noinline
1242 #define debug_noinline
1245 #endif /* IEEE80211_I_H */